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WO2010071350A2 - Liquid crystal display device - Google Patents

Liquid crystal display device Download PDF

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Publication number
WO2010071350A2
WO2010071350A2 PCT/KR2009/007512 KR2009007512W WO2010071350A2 WO 2010071350 A2 WO2010071350 A2 WO 2010071350A2 KR 2009007512 W KR2009007512 W KR 2009007512W WO 2010071350 A2 WO2010071350 A2 WO 2010071350A2
Authority
WO
WIPO (PCT)
Prior art keywords
liquid crystal
transparent window
crystal panel
light
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2009/007512
Other languages
French (fr)
Korean (ko)
Other versions
WO2010071350A3 (en
Inventor
김종혁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Innotek Co Ltd
Original Assignee
LG Innotek Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020080126972A external-priority patent/KR101543021B1/en
Priority claimed from KR1020080126971A external-priority patent/KR101637565B1/en
Priority claimed from KR1020080126973A external-priority patent/KR20100068572A/en
Application filed by LG Innotek Co Ltd filed Critical LG Innotek Co Ltd
Publication of WO2010071350A2 publication Critical patent/WO2010071350A2/en
Publication of WO2010071350A3 publication Critical patent/WO2010071350A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133502—Antiglare, refractive index matching layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix

Definitions

  • the present invention relates to a liquid crystal display device.
  • various electronic devices such as mobile communication terminals, digital cameras, notebook computers, monitors, TVs, and the like include image display devices for displaying images.
  • image display apparatuses may be used, but a flat panel display apparatus having a flat plate shape is mainly used, and a liquid crystal display (LCD) is particularly widely used among flat panel display apparatuses.
  • LCD liquid crystal display
  • a liquid crystal display device which can improve an external design of a liquid crystal display device having a light shielding pattern and simplify the manufacturing process by easily forming a light shielding pattern.
  • a liquid crystal display device includes a liquid crystal panel; A transparent window positioned above the liquid crystal panel; A light blocking pattern formed on an outer region of the transparent window; And a light conversion layer formed in an inner region of the transparent window where the light shielding pattern is not formed, and changing a characteristic of external light incident from an upper side.
  • the embodiment it is possible to improve the appearance design of the liquid crystal display device in which the light shielding pattern is formed, and to provide a liquid crystal display device which can simplify the manufacturing process by easily forming the light shielding pattern.
  • FIG. 1 is a cross-sectional view of a liquid crystal display device according to a first embodiment.
  • FIG. 2 is a cross-sectional view of a liquid crystal display according to a second embodiment.
  • FIG. 5 is a cross-sectional view of a liquid crystal display according to a third embodiment.
  • FIG. 6 is a plan view of a liquid crystal display according to an exemplary embodiment.
  • FIG. 7 is a cross-sectional view of a liquid crystal display according to a fourth embodiment.
  • FIG. 8 is a cross-sectional view of a liquid crystal display according to a fifth embodiment.
  • FIG. 1 is a cross-sectional view of a liquid crystal display device according to a first embodiment.
  • the liquid crystal display may include a liquid crystal panel 120 and a transparent window 150.
  • the mold frame 100 accommodates the liquid crystal panel 120 and a backlight unit (not shown).
  • the liquid crystal panel 120 may include a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween. Since the liquid crystal panel 120 does not have self-luminous power, the liquid crystal panel 120 may include a backlight unit (not shown) positioned under the liquid crystal panel 120 to provide light.
  • An upper polarizer 130 and a lower polarizer 110 may be formed on an upper surface and a lower surface of the liquid crystal panel 120, more specifically, on an upper surface of the color filter substrate and a lower surface of the TFT substrate.
  • the transparent window 150 is disposed above the liquid crystal panel 120 at regular intervals to protect the liquid crystal panel 120 from external impact.
  • the transparent window 150 transmits light emitted from the liquid crystal panel 120 so that an image displayed on the liquid crystal panel 120 is viewed from the outside.
  • the transparent window 150 may be made of a plastic or glass material such as acrylic having impact resistance and light transmittance.
  • An adhesive layer 160 may be formed in the space between the liquid crystal panel 120 and the transparent window 150.
  • the adhesive layer 160 may bond the liquid crystal panel 120 and the transparent window 150 to improve external visibility of the display image and may protect the liquid crystal panel 120 from external impact.
  • the adhesive layer 160 may be made of a UV resin, and more specifically, may be formed by applying a resin such as acrylic and then curing by irradiating UV light. have.
  • the light blocking pattern 140 may be formed in an outer region of the transparent window 150.
  • the outer area of the transparent window 150 may be a non display area in which an image is not displayed in the transparent window 150.
  • the light blocking pattern 140 may block light from being emitted to the outside through the outer region of the transparent window 150. Accordingly, when viewed from the outside, the outer area surrounding the inner area in which the image is displayed in the transparent window 150 may be blocked by light by the light shielding pattern 140 to have a black color.
  • the light blocking pattern 140 may be formed by printing a black pattern on a lower surface of the transparent window 150.
  • the reflective thin film layer 170 which is a light conversion layer, may be formed between the liquid crystal panel 120 and the transparent window 150, and more particularly, between the transparent window 150 and the upper polarizer 130.
  • the reflective thin film layer 170 may be formed on the lower surface of the inner region in which the light shielding pattern 140 is not formed in the transparent window 150.
  • the reflective thin film layer 170 may reflect external light incident from the upper side to increase brightness of an inner region of the transparent window 150 that is viewed from the outside. Therefore, it is possible to reduce the difference between the brightness of the outer region and the inner region of the transparent window 150.
  • the reflective thin film layer 170 may reflect some of the external light incident from the upper side and transmit the rest in the downward direction. In addition, the reflective thin film layer 170 may transmit the panel light emitted upward from the liquid crystal panel 120 (some may be reflected), so that the display image may be displayed to the outside through the transparent window 150.
  • the reflective thin film layer 170 may be formed of a thin metal thin film.
  • the reflective thin film layer 170 may be formed by forming a thin metal film by depositing a thin metal material on the lower surface of the transparent window 150.
  • the reflective thin film layer 170 formed as described above may reflect some of the incident external light and transmit the panel light emitted from the liquid crystal panel 120.
  • the reflective thin film layer 170 may be formed only in a partial region on the lower surface of the transparent window 150 in the form of a lattice. In this case, outside light is reflected in a region where the reflective thin film layer 170 is formed among the lower surfaces of the transparent window 150, and panel light emitted from the liquid crystal panel 120 is upward in a region where the reflective thin film layer 170 is not formed. Can be permeable.
  • the reflectance of the reflective thin film layer 170 may be determined by the amount of light reflected or scattered in the outer region of the transparent window 150. That is, the amount of light reflected from the inner region of the transparent window 150 to the outside by the reflective thin film layer 170 is the same as or similar to the amount of light reflected or scattered from the outer region of the transparent window 150 such that the inner region and the outer region
  • the reflectance of the reflective thin film layer 170 may be determined so that the difference in brightness of?
  • the liquid crystal display according to the first exemplary embodiment may reflect the light incident from the outside by forming the reflective layer 170 in an inner region of the transparent window 150 where the light shielding pattern 140 is not formed. have. Accordingly, the difference in brightness between the inner region and the outer region of the transparent window 150 may be reduced when viewed from the outside, thereby improving appearance design.
  • FIG. 2 is a cross-sectional view of a liquid crystal display according to a second embodiment.
  • the liquid crystal panel 220 may be accommodated in the mold frame 200.
  • the liquid crystal panel 220 may include a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween. Since the liquid crystal panel 220 does not have self-luminous power, the liquid crystal panel 220 may include a backlight unit (not shown) positioned under the liquid crystal panel 220.
  • An upper polarizer 230 and a lower polarizer 210 may be formed on an upper surface and a lower surface of the liquid crystal panel 220, more specifically, on an upper surface of the color filter substrate and a lower surface of the TFT substrate.
  • the transparent window 250 is disposed on the upper side of the liquid crystal panel 220 at regular intervals to protect the liquid crystal panel 220 from external shocks, and transmits the light emitted from the liquid crystal panel 220 to transmit the liquid crystal panel 220.
  • the image displayed at is displayed from the outside.
  • the transparent window 250 may be made of a plastic or glass material such as acrylic having impact resistance and light transmittance.
  • An adhesive layer 260 may be formed in the space between the liquid crystal panel 220 and the transparent window 250.
  • the adhesive layer 260 may bond the liquid crystal panel 220 and the transparent window 250 to improve external visibility of the display image and may protect the liquid crystal panel 220 from external impact.
  • the adhesive layer 260 may be made of a UV resin, and more specifically, may be formed by applying a resin such as acrylic and then curing by irradiating UV light. have.
  • the light blocking pattern 240 may be formed in an outer region of the transparent window 250.
  • the outer region of the transparent window 250 may be a non display area in which an image is not displayed among the transparent windows 250, and the light shielding pattern 240 may light through the outer region of the transparent window 250. It can be blocked from being released to the outside. Accordingly, when viewed from the outside, the outer region surrounding the inner region in which the image is displayed among the transparent windows 250 may be blocked by light by the light blocking pattern 240, thereby making it black.
  • the light blocking pattern 240 may be formed by printing a black pattern on a lower surface of the transparent window 250.
  • the scattering layer 270 which is a light conversion layer, may be formed between the liquid crystal panel 220 and the transparent window 250, and more specifically, on the lower surface of the inner region where the light shielding pattern 240 is not formed among the transparent windows 250. Can be.
  • the scattering layer 270 may scatter external light incident from the upper side to increase the brightness of the inner region of the transparent window 250 that is viewed from the outside. Thus, the difference in brightness between the outer area of the transparent window 250 and the inner area can be reduced.
  • the scattering layer 270 may scatter some of the external light incident from the upper side and transmit the remaining external light in the downward direction.
  • the display image may be transmitted through the transparent window 250 by transmitting the panel light emitted from the liquid crystal panel 220. It can be shown externally.
  • the scattering degree of the scattering layer 270 representing the degree of scattering of the external light incident by the scattering layer 270 may be determined by the amount of light reflected or scattered in the outer region of the transparent window 250.
  • the amount of light scattered in the inner region of the transparent window 250 by the scattering layer 270 is the same as or similar to the amount of light reflected or scattered in the outer region of the transparent window 250 so that the brightness of the inner region and the outer region is different.
  • the scattering degree of the scattering layer 270 may be determined so that the difference is not identified externally.
  • external light incident from the outside may be reflected or scattered at the interface portion between the transparent window 250 and the light shielding pattern 240.
  • the external light is formed by the transparent window 250 and the light blocking pattern ( It may be reflected or scattered at the interface portion of 240. Due to the reflection or scattering of external light, the outer region of the transparent window 250 in which the light shielding pattern 240 is formed may be seen to be slightly brighter than the actual color of the light shielding pattern 240, for example, black. have.
  • the scattering layer 240 may be formed in an inner region of the transparent window 250 where the light shielding pattern 240 is not formed to scatter light incident from the outside.
  • the difference in brightness between the inner and outer regions of the transparent window 250 may be reduced when viewed from the outside.
  • 3 and 4 illustrate embodiments of a method of forming the scattering layer 270, and the scattering layer 270 uses an adhesive layer 260 formed between the liquid crystal panel 220 and the transparent window 250. Can be formed.
  • a scattering layer 270 may be formed by dispersing and applying a plurality of scattering particles 271 scattering light onto a lower surface of the transparent window 250. Accordingly, external light incident from the outside may be scattered by the scattering particles 271 included in the scattering layer 270.
  • the bottom surface of the transparent window 250 may be processed to form a plurality of uneven parts 272 to form the scattering layer 270. Accordingly, external light incident from the outside may be scattered by the uneven parts 272 included in the scattering layer 270.
  • sand particles such as gold steel, etc.
  • the scattering layer 270 is formed in an inner region of the transparent window 250 where the light shielding pattern 240 is not formed to scatter light incident from the outside. Can be. Accordingly, the difference in brightness between the inner region and the outer region of the transparent window 150 may be reduced when viewed from the outside, thereby improving appearance design.
  • FIG. 5 is a cross-sectional view of the liquid crystal display according to the third embodiment
  • FIG. 6 is a plan view of the liquid crystal display according to the third embodiment.
  • the liquid crystal display may include a liquid crystal panel 320 and a transparent window 350.
  • the liquid crystal panel 320 may include a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween. Since the liquid crystal panel 320 does not have self-luminous power, the liquid crystal panel 320 may include a backlight unit (not shown) positioned below the liquid crystal panel 320.
  • the transparent window 350 is disposed above the liquid crystal panel 320 at regular intervals to protect the liquid crystal panel 320 from external impact.
  • the transparent window 350 transmits light emitted from the liquid crystal panel 320 so that an image displayed on the liquid crystal panel 320 is viewed from the outside.
  • the transparent window 350 may be made of a plastic or glass material such as acrylic having impact resistance and light transmittance.
  • An upper polarizer 340 and a first lower polarizer 330 may be positioned between the liquid crystal panel 320 and the transparent window 350.
  • the upper polarizer 340 and the first lower polarizer 330 may have an absorption axis (stretch axis) that is a direction in which the upper polarizer 340 and the first lower polarizer 330 are stretched, and a transmission axis (polarization axis) orthogonal to the absorption axis. Accordingly, the upper polarizer 340 and the first lower polarizer 330 divide the incident light into two polarization components orthogonal to each other, so that the light incident in parallel with the absorption axis is absorbed or dispersed and parallel with the transmission axis. The incident light can be transmitted.
  • the upper polarizer 340 is disposed on the upper side of the liquid crystal panel 320, and more specifically, on the lower side of the transparent window 350 to polarize light in a direction parallel to its transmission axis among the light emitted from the liquid crystal panel 320. Can transmit light having a state.
  • the first lower polarizer 330 may be disposed below the transparent window 350, more specifically, between the upper polarizer 340 and the liquid crystal panel 330, and may be formed in an outer region of the transparent window 350.
  • the upper polarizer 340 and the first lower polarizer 330 may be formed in a direction in which transmission axes are perpendicular to each other.
  • the transparent window in which the upper polarizer 340 and the first lower polarizer 330 overlap each other In the outer region of 350, light may be blocked to act as a light shielding pattern, and the inner region may serve as a light conversion layer. That is, the first lower polarizer 330 transmits only light having a polarization state in a direction parallel to its transmission axis among the light incident from the liquid crystal panel 320, and is transmitted by the first lower polarizer 330. Since the light has a polarization state in a direction orthogonal to the transmission axis of the upper polarizer 340, the light may be blocked by the upper polarizer 340.
  • a second lower polarizer 310 may be disposed below the liquid crystal panel 320, and more specifically, below the TFT substrate.
  • the second lower polarizer 310 may transmit light having a polarization state in a direction parallel to its transmission axis among the light emitted from the backlight unit (not shown).
  • the transmission axis of the second lower polarizer 310 may be formed in a direction orthogonal to the transmission axis of the upper polarizer 340. Accordingly, in the inner region in which the first lower polarizer 330 is not formed among the transparent windows 350, the light passing through the liquid crystal panel 320 after the upper polarizer 340 passes through the second lower polarizer 310. Can transmit light having a polarization state in a direction parallel to its transmission axis.
  • the first lower polarizer 330 is formed at an outer region of the transparent window 350
  • the second lower polarizer 310 is formed at a position corresponding to the inner region of the transparent window 350.
  • the first and second lower polarizers 330 and 310 may not overlap each other.
  • FIG. 6 illustrates an embodiment of a shape of an outer region and an inner region of the transparent window 350.
  • the upper polarizing plate 330 and the first lower polarizing plate 330 whose transmission axes are perpendicular to each other overlap each other, and are emitted from the liquid crystal panel 320 or the like.
  • the light may be blocked without being emitted to the outside through the transparent window 350. Accordingly, the outer region 354 of the transparent window 350 may become black when viewed from the outside.
  • the inner region 352 of the transparent window 350 serves as a light conversion layer, such that the upper polarizer 330 and the second lower polarizer 310 overlap with the liquid crystal panel 320 interposed therebetween, and thus, the second lower part.
  • the light passing through the liquid crystal panel 320 may be polarized in a direction parallel to the transmission axis of the upper polarizing plate 340 and then emitted to the outside through the transparent window 350. Accordingly, an image displayed on the liquid crystal panel 320 may be displayed to the outside through the inner region 352 of the transparent window 350.
  • the transmission axes of the upper polarizer 330 and the first lower polarizer 330 are orthogonal to each other, but the transmission axes of the upper polarizer 330 and the first lower polarizer 330 are perpendicular to each other. It can be twisted slightly. That is, as the transmission axis of the upper polarizer 330 is shifted about the direction orthogonal to the transmission axis of the first lower polarizer 330, the brightness of the outer region 354 of the transparent window 350 may increase. .
  • the transmission axes of the upper polarizer 330 and the first lower polarizer 330 may be adjusted such that the brightness of the outer region 354 of the transparent window 350 has a value similar to the brightness of the inner region 350.
  • FIG. 7 is a cross-sectional view of a liquid crystal display according to a fourth embodiment.
  • a first adhesive layer 345 may be formed between the transparent window 350 and the upper polarizer 340.
  • the upper polarizing plate 340 is positioned, and the resin is cured using ultraviolet (UV) light to form the first adhesive layer 345.
  • the upper polarizing plate 340 may be formed on the lower surface of the transparent window 350 by the first adhesive layer 345 formed as described above.
  • a second adhesive layer may be formed in the space between the transparent window 350 and the liquid crystal panel 320, more specifically, in the space between the upper polarizing plate 340 and the liquid crystal panel 320 formed on the lower surface of the transparent window 350. 335 may be formed.
  • panel light emitted upward from the liquid crystal panel 320 may be scattered in the air layer.
  • the panel light may be refracted by a difference in refractive index between the liquid crystal panel 320 and the air layer or a difference in refractive index between the light transmitting layer 350 and the air layer. Due to the scattering or refraction of the panel light as described above, the inner region of the transparent window 350 may be seen to be brighter than the outer region when viewed from the outside, and the image quality of the image may be degraded, such as the outdoor visibility of the display image is reduced. .
  • a resin such as acrylic
  • FIG. 8 is a cross-sectional view illustrating another embodiment of the configuration of the liquid crystal display according to the fifth embodiment, and descriptions of the same elements as those described with reference to FIGS. 5 to 7 will be omitted.
  • the transparent window positioned above the liquid crystal panel 320 may be formed of a polarizing glass 360, and a first lower polarizing plate 330 may be formed in an outer region of the polarizing glass 360. have.
  • the polarizing glass 360 and the first lower polarizing plate 330 may be formed in a direction in which transmission axes are perpendicular to each other. Accordingly, an outer region of the polarizing glass 360 overlapping the first lower polarizing plate 330 may emit light. It may become black when viewed from the outside by blocking it.
  • the transmission axis of the polarizing glass 360 may be perpendicular to the transmission axis of the second lower polarizing plate 310 formed below the liquid crystal panel 320. Accordingly, in the inner region of the polarizing glass 360 where the polarizing glass 360 and the second lower polarizing plate 310 overlap with the liquid crystal panel 320 interposed therebetween, the liquid crystal is transmitted through the second lower polarizing plate 310. Light passing through the panel 320 is polarized in a direction parallel to the transmission axis of the polarizing glass 360 to be transmitted to the outside, so that an image displayed on the liquid crystal panel 320 may be displayed to the outside.
  • an adhesive layer 500 may be formed in a space between the liquid crystal panel 320 and the polarizing glass 360.
  • the adhesive layer 500 may be formed of a resin such as transparent acrylic, and adheres the liquid crystal panel 320 and the polarizing glass 360 and at the same time generates light in the inner region of the polarizing glass 360. Scattering or refraction may be reduced to reduce the difference in brightness between the inner and outer regions of the polarizing glass 360 as seen from the outside.
  • the light shielding pattern is formed in the outer region 354 of the transparent window 350 using two polarizing plates.
  • the brightness of the outer region 354 and the inner region 350 may be adjusted to reduce the difference in brightness between the two regions 350 and 354, thereby improving the appearance design.
  • the embodiment can be applied to a liquid crystal display device.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The liquid crystal display device according to one embodiment of the present invention comprises: a liquid crystal panel; a transparent window disposed over the liquid crystal panel; a light shielding pattern formed in the peripheral region of the transparent window; and an optical converting layer formed in the internal area of the transparent window, where the light shielding pattern is not formed, to change the characteristics of light from an external source incident from above.

Description

액정 표시 장치Liquid crystal display

본 발명은 액정 표시 장치에 관한 것이다. The present invention relates to a liquid crystal display device.

일반적으로, 이동통신 단말기, 디지털 카메라, 노트북, 모니터, TV 등 여러 가지 전자기기는 영상을 표시하기 위한 영상표시장치를 포함한다. 영상표시장치로는 다양한 종류가 사용될 수 있으나, 평판 형상을 갖는 평판표시장치가 주로 사용되며, 평판표시장치 중에서도 특히 액정표시장치(Liquid Crystal Display: LCD)가 널리 사용되고 있다.Generally, various electronic devices such as mobile communication terminals, digital cameras, notebook computers, monitors, TVs, and the like include image display devices for displaying images. Various kinds of image display apparatuses may be used, but a flat panel display apparatus having a flat plate shape is mainly used, and a liquid crystal display (LCD) is particularly widely used among flat panel display apparatuses.

차광 패턴이 형성된 액정 표시 장치의 외관 디자인을 개선할 수 있으며, 차광 패턴을 용이하게 형성하여 제조 공정을 단순화할 수 있는 액정 표시 장치를 제공한다.Provided is a liquid crystal display device which can improve an external design of a liquid crystal display device having a light shielding pattern and simplify the manufacturing process by easily forming a light shielding pattern.

실시예에 따른 액정 표시 장치는, 액정 패널; 상기 액정 패널의 상측에 위치하는 투명 윈도우; 상기 투명 윈도우의 외곽 영역에 형성된 차광 패턴; 및 상기 투명 윈도우 중 상기 차광 패턴이 형성되지 않은 내부 영역에 형성되어, 상측으로부터 입사되는 외부 광의 특성을 변화시키는 광 변환층을 포함한다.A liquid crystal display device according to an embodiment includes a liquid crystal panel; A transparent window positioned above the liquid crystal panel; A light blocking pattern formed on an outer region of the transparent window; And a light conversion layer formed in an inner region of the transparent window where the light shielding pattern is not formed, and changing a characteristic of external light incident from an upper side.

실시예에 따르면, 차광 패턴이 형성된 액정 표시 장치의 외관 디자인을 개선할 수 있으며, 차광 패턴을 용이하게 형성하여 제조 공정을 단순화할 수 있는 액정 표시 장치를 제공할 수 있다.According to the embodiment, it is possible to improve the appearance design of the liquid crystal display device in which the light shielding pattern is formed, and to provide a liquid crystal display device which can simplify the manufacturing process by easily forming the light shielding pattern.

도 1은 제1실시예에 따른 액정 표시 장치의 단면도이다.1 is a cross-sectional view of a liquid crystal display device according to a first embodiment.

도 2는 제2실시예에 따른 액정 표시 장치의 단면도이다.2 is a cross-sectional view of a liquid crystal display according to a second embodiment.

도 3 및 도 4는 제2실시예에 따른 액정 표시 장치의 요부 확대도이다.3 and 4 are enlarged views of main parts of the liquid crystal display according to the second embodiment.

도 5는 제3실시예에 따른 액정 표시 장치의 단면도이다.5 is a cross-sectional view of a liquid crystal display according to a third embodiment.

도 6은 실시예에 따른 액정 표시 장치의 평면도이다.6 is a plan view of a liquid crystal display according to an exemplary embodiment.

도 7은 제4실시예에 따른 액정 표시 장치의 단면도이다.7 is a cross-sectional view of a liquid crystal display according to a fourth embodiment.

도 8은 제5실시예에 따른 액정 표시 장치의 단면도이다.8 is a cross-sectional view of a liquid crystal display according to a fifth embodiment.

이하에서는 첨부한 도면을 참조하여 실시예에 따른 액정 표시 장치에 대해서 상세하게 설명한다. Hereinafter, a liquid crystal display according to an exemplary embodiment will be described in detail with reference to the accompanying drawings.

도 1은 제1실시예에 따른 액정 표시 장치의 단면도이다. 1 is a cross-sectional view of a liquid crystal display device according to a first embodiment.

도 1에 도시 된 바와 같이 액정 표시 장치는 액정 패널(120) 및 투명 윈도우(150)를 포함할 수 있다.As illustrated in FIG. 1, the liquid crystal display may include a liquid crystal panel 120 and a transparent window 150.

몰드 프레임(100)은 액정 패널(120) 및 백라이트 유닛(미도시)을 수납한다.The mold frame 100 accommodates the liquid crystal panel 120 and a backlight unit (not shown).

액정 패널(120)은 액정층 및 상기 액정층을 사이에 두고 서로 대향하는 TFT 기판 및 컬러 필터 기판을 포함할 수 있다. 액정 패널(120)은 자체 발광력이 없으므로, 액정 패널(120)의 하측에 위치하여 광을 제공하는 백라이트 유닛(미도시)을 포함할 수 있다. The liquid crystal panel 120 may include a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween. Since the liquid crystal panel 120 does not have self-luminous power, the liquid crystal panel 120 may include a backlight unit (not shown) positioned under the liquid crystal panel 120 to provide light.

액정 패널(120)의 상측 면과 하측 면, 좀더 구체적으로는 상기 컬러필터기판의 상측 면과 상기 TFT기판의 하측 면에 각각 상부 편광판(130)과 하부 편광판(110)이 형성될 수 있다.An upper polarizer 130 and a lower polarizer 110 may be formed on an upper surface and a lower surface of the liquid crystal panel 120, more specifically, on an upper surface of the color filter substrate and a lower surface of the TFT substrate.

투명 윈도우(150)는 일정한 간격을 두고 액정 패널(120)의 상측에 배치되어, 외부 충격으로부터 액정 패널(120)을 보호한다. 투명 윈도우(150)는 액정 패널(120)로부터 방출되는 광을 투과 시켜 액정 패널(120)에서 표시되는 영상이 외부에서 보여지도록 한다. 예를 들어, 투명 윈도우(150)는 내충격성 및 광투과성을 가지는 아크릴(acrylic) 등의 플라스틱(plastic) 재질 또는 글래스(glass) 재질로 구성될 수 있다.The transparent window 150 is disposed above the liquid crystal panel 120 at regular intervals to protect the liquid crystal panel 120 from external impact. The transparent window 150 transmits light emitted from the liquid crystal panel 120 so that an image displayed on the liquid crystal panel 120 is viewed from the outside. For example, the transparent window 150 may be made of a plastic or glass material such as acrylic having impact resistance and light transmittance.

액정 패널(120)과 투명 윈도우(150) 사이의 공간에는 접착층(160)이 형성될 수 있다. 접착층(160)은 액정 패널(120)과 투명 윈도우(150)를 접착시키는 동시에 디스플레이 영상의 외부 시인성을 향상시킬 수 있으며 액정 패널(120)을 외부 충격으로부터 보호할 수 있다. 예를 들어, 접착층(160)은 UV 레진(resin)으로 구성될 수 있으며, 좀 더 구체적으로는 아크릴(acrylic)과 같은 레진(resin)을 도포한 후 자외선(UV)을 조사해 경화시켜 형성될 수 있다.An adhesive layer 160 may be formed in the space between the liquid crystal panel 120 and the transparent window 150. The adhesive layer 160 may bond the liquid crystal panel 120 and the transparent window 150 to improve external visibility of the display image and may protect the liquid crystal panel 120 from external impact. For example, the adhesive layer 160 may be made of a UV resin, and more specifically, may be formed by applying a resin such as acrylic and then curing by irradiating UV light. have.

투명 윈도우(150)의 외곽 영역에는 차광 패턴(140)이 형성되어 있을 수 있다. 투명 윈도우(150)의 외곽 영역은 투명 윈도우(150) 중 영상이 디스플레이되지 않는 비표시 영역(non display area)일 수 있다. 차광 패턴(140)은 투명 윈도우(150)의 외곽 영역을 통해 광이 외부로 방출되지 않도록 차단할 수 있다. 그에 따라, 외부에서 볼 때, 투명 윈도우(150) 중 영상이 디스플레이되는 내부 영역을 둘러싸는 외곽 영역은 차광 패턴(140)에 의해 광이 차단되어, 검은색을 띄게 될 수 있다. 예를 들어, 차광 패턴(140)은 투명 윈도우(150)의 하측 면에 블랙 패턴(black pattern)으로 인쇄되어 형성될 수 있다.The light blocking pattern 140 may be formed in an outer region of the transparent window 150. The outer area of the transparent window 150 may be a non display area in which an image is not displayed in the transparent window 150. The light blocking pattern 140 may block light from being emitted to the outside through the outer region of the transparent window 150. Accordingly, when viewed from the outside, the outer area surrounding the inner area in which the image is displayed in the transparent window 150 may be blocked by light by the light shielding pattern 140 to have a black color. For example, the light blocking pattern 140 may be formed by printing a black pattern on a lower surface of the transparent window 150.

액정 패널(120)과 투명 윈도우(150) 사이, 보다 상세하게는 투명 윈도우(150)와 상부 편광판(130) 사이에는 광 변환층인 반사 박막층(170)이 형성될 수 있다. 예를 들어, 반사 박막층(170)은 투명 윈도우(150) 중 차광 패턴(140)이 형성되지 않은 내부 영역의 하측 면에 형성될 수 있다.The reflective thin film layer 170, which is a light conversion layer, may be formed between the liquid crystal panel 120 and the transparent window 150, and more particularly, between the transparent window 150 and the upper polarizer 130. For example, the reflective thin film layer 170 may be formed on the lower surface of the inner region in which the light shielding pattern 140 is not formed in the transparent window 150.

반사 박막층(170)은 상측으로부터 입사되는 외광을 반사하여, 외부에서 보여지는 투명 윈도우(150) 내부 영역의 밝기를 증가시킬 수 있다. 따라서, 투명 윈도우(150) 외곽 영역과 내부 영역의 밝기의 차이를 감소시킬 수 있다.The reflective thin film layer 170 may reflect external light incident from the upper side to increase brightness of an inner region of the transparent window 150 that is viewed from the outside. Therefore, it is possible to reduce the difference between the brightness of the outer region and the inner region of the transparent window 150.

또한, 반사 박막층(170)은 상측으로부터 입사되는 외광 중 일부는 반사시키고 나머지는 하측 방향으로 투과 시킬 수 있다. 또한, 반사 박막층(170)은 액정 패널(120)로부터 상측으로 방출되는 패널 광을 투과 시켜(일부는 반사될 수도 있음), 투명 윈도우(150)를 통해 디스플레이 영상이 외부에 보여지도록 할 수 있다.In addition, the reflective thin film layer 170 may reflect some of the external light incident from the upper side and transmit the rest in the downward direction. In addition, the reflective thin film layer 170 may transmit the panel light emitted upward from the liquid crystal panel 120 (some may be reflected), so that the display image may be displayed to the outside through the transparent window 150.

상기한 바와 같이 광 반사성과 투과성을 동시에 가지도록 하기 위해, 반사 박막층(170)은 얇은 금속 박막으로 구성될 수 있다. 예를 들어, 투명 윈도우(150)의 하측 면에 금속 물질을 얇게 증착하여 금속 박막을 형성함으로써 반사 박막층(170)을 형성할 수 있다. 이와 같이 형성된 반사 박막층(170)은 입사되는 외광 중 일부를 반사하는 동시에 액정 패널(120)로부터 방출되는 패널 광을 투과 시킬 수 있다.As described above, in order to simultaneously have light reflectivity and transmittance, the reflective thin film layer 170 may be formed of a thin metal thin film. For example, the reflective thin film layer 170 may be formed by forming a thin metal film by depositing a thin metal material on the lower surface of the transparent window 150. The reflective thin film layer 170 formed as described above may reflect some of the incident external light and transmit the panel light emitted from the liquid crystal panel 120.

한편, 반사 박막층(170)은 격자 형태로 투명 윈도우(150)의 하측 면 상의 일부 영역에만 형성될 수 있다. 이 경우, 투명 윈도우(150)의 하측 면 중 반사 박막층(170)이 형성된 영역에서는 외광이 반사되며, 반사 박막층(170)이 형성되지 않은 영역에서는 액정 패널(120)로부터 방출되는 패널 광이 상측으로 투과될 수 있다.The reflective thin film layer 170 may be formed only in a partial region on the lower surface of the transparent window 150 in the form of a lattice. In this case, outside light is reflected in a region where the reflective thin film layer 170 is formed among the lower surfaces of the transparent window 150, and panel light emitted from the liquid crystal panel 120 is upward in a region where the reflective thin film layer 170 is not formed. Can be permeable.

반사 박막층(170)의 반사율은 투명 윈도우(150)의 외곽 영역에서 반사 또는 산란되는 광의 양에 의해 결정될 수 있다. 즉, 반사 박막층(170)에 의해 투명 윈도우(150)의 내부 영역에서 외부로 반사되는 광의 양이 투명 윈도우(150)의 외곽 영역에서 반사 또는 산란되는 광의 양과 동일 또는 유사하여 상기 내부 영역과 외곽 영역의 밝기 차이가 외부에서 식별되지 않도록, 반사 박막층(170)의 반사율이 결정될 수 있다.The reflectance of the reflective thin film layer 170 may be determined by the amount of light reflected or scattered in the outer region of the transparent window 150. That is, the amount of light reflected from the inner region of the transparent window 150 to the outside by the reflective thin film layer 170 is the same as or similar to the amount of light reflected or scattered from the outer region of the transparent window 150 such that the inner region and the outer region The reflectance of the reflective thin film layer 170 may be determined so that the difference in brightness of?

이상 설명한 바와 같이, 제1실시예에 따른 액정 표시 장치는, 투명 윈도우(150) 중 차광 패턴(140)이 형성되지 않은 내부 영역에 반사층(170)을 형성하여 외부로부터 입사되는 광을 반사시킬 수 있다. 이에 따라, 외부에서 볼 때 투명 윈도우(150)의 내부 영역과 외곽 영역의 밝기 차이가 감소되어 외관 디자인을 개선할 수 있다.As described above, the liquid crystal display according to the first exemplary embodiment may reflect the light incident from the outside by forming the reflective layer 170 in an inner region of the transparent window 150 where the light shielding pattern 140 is not formed. have. Accordingly, the difference in brightness between the inner region and the outer region of the transparent window 150 may be reduced when viewed from the outside, thereby improving appearance design.

도 2는 제2실시예에 따른 액정 표시 장치의 단면도이다.2 is a cross-sectional view of a liquid crystal display according to a second embodiment.

도 2를 참조하면, 액정 패널(220)은 몰드 프레임(200)에 수납될 수 있다.Referring to FIG. 2, the liquid crystal panel 220 may be accommodated in the mold frame 200.

액정 패널(220)은 액정층 및 상기 액정층을 사이에 두고 서로 대향하는 TFT 기판 및 컬러 필터 기판을 포함할 수 있다. 액정 패널(220)은 자체 발광력이 없으므로, 액정 패널(220)의 하측에 위치하는 백라이트 유닛(미도시)을 포함할 수 있다.The liquid crystal panel 220 may include a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween. Since the liquid crystal panel 220 does not have self-luminous power, the liquid crystal panel 220 may include a backlight unit (not shown) positioned under the liquid crystal panel 220.

액정 패널(220)의 상측 면과 하측 면, 좀더 구체적으로는 상기 컬러필터기판의 상측 면과 상기 TFT기판의 하측 면에 각각 상부 편광판(230)과 하부 편광판(210)이 형성될 수 있다.An upper polarizer 230 and a lower polarizer 210 may be formed on an upper surface and a lower surface of the liquid crystal panel 220, more specifically, on an upper surface of the color filter substrate and a lower surface of the TFT substrate.

투명 윈도우(250)는 일정한 간격을 두고 액정 패널(220)의 상측에 배치되어, 외부 충격으로부터 액정 패널(220)을 보호하며, 액정 패널(220)로부터 방출되는 광을 투과 시켜 액정 패널(220)에서 표시되는 영상이 외부에서 보여지도록 한다. 예를 들어, 투명 윈도우(250)는 내충격성 및 광투과성을 가지는 아크릴(acrylic) 등의 플라스틱(plastic) 재질 또는 글래스(glass) 재질로 구성될 수 있다. The transparent window 250 is disposed on the upper side of the liquid crystal panel 220 at regular intervals to protect the liquid crystal panel 220 from external shocks, and transmits the light emitted from the liquid crystal panel 220 to transmit the liquid crystal panel 220. The image displayed at is displayed from the outside. For example, the transparent window 250 may be made of a plastic or glass material such as acrylic having impact resistance and light transmittance.

액정 패널(220)과 투명 윈도우(250) 사이의 공간에는 접착층(260)이 형성될 수 있다. 접착층(260)은 액정 패널(220)과 투명 윈도우(250)를 접착시키는 동시에 디스플레이 영상의 외부 시인성을 향상시킬 수 있으며 액정 패널(220)을 외부 충격으로부터 보호할 수 있다. 예를 들어, 접착층(260)은 UV 레진(resin)으로 구성될 수 있으며, 좀 더 구체적으로는 아크릴(acrylic)과 같은 레진(resin)을 도포한 후 자외선(UV)을 조사해 경화시켜 형성될 수 있다.An adhesive layer 260 may be formed in the space between the liquid crystal panel 220 and the transparent window 250. The adhesive layer 260 may bond the liquid crystal panel 220 and the transparent window 250 to improve external visibility of the display image and may protect the liquid crystal panel 220 from external impact. For example, the adhesive layer 260 may be made of a UV resin, and more specifically, may be formed by applying a resin such as acrylic and then curing by irradiating UV light. have.

투명 윈도우(250)의 외곽 영역에는 차광 패턴(240)이 형성될 수 있다. 투명 윈도우(250)의 외곽 영역은 투명 윈도우(250) 중 영상이 디스플레이되지 않는 비표시 영역(non display area)일 수 있으며, 차광 패턴(240)은 투명 윈도우(250)의 상기 외곽 영역을 통해 광이 외부로 방출되지 않도록 차단할 수 있다. 그에 따라, 외부에서 볼 때, 투명 윈도우(250) 중 영상이 디스플레이되는 내부 영역을 둘러싸는 외곽 영역은 차광 패턴(240)에 의해 광이 차단되어, 검은색을 띄게 될 수 있다. 예를 들어, 차광 패턴(240)은 투명 윈도우(250)의 하측 면에 블랙 패턴(black pattern)으로 인쇄되어 형성될 수 있다.The light blocking pattern 240 may be formed in an outer region of the transparent window 250. The outer region of the transparent window 250 may be a non display area in which an image is not displayed among the transparent windows 250, and the light shielding pattern 240 may light through the outer region of the transparent window 250. It can be blocked from being released to the outside. Accordingly, when viewed from the outside, the outer region surrounding the inner region in which the image is displayed among the transparent windows 250 may be blocked by light by the light blocking pattern 240, thereby making it black. For example, the light blocking pattern 240 may be formed by printing a black pattern on a lower surface of the transparent window 250.

광 변환층인 산란층(270)은 액정 패널(220)과 투명 윈도우(250) 사이, 보다 상세하게는 투명 윈도우(250) 중 차광 패턴(240)이 형성되지 않은 내부 영역의 하측 면에 형성될 수 있다. 산란층(270)은 상측으로부터 입사되는 외광을 산란시켜, 외부에서 보여지는 투명 윈도우(250) 내부 영역의 밝기를 증가시킬 수 있다. 따라서, 투명 윈도우(250) 외곽 영역과 내부 영역의 밝기 차를 감소시킬 수 있다. The scattering layer 270, which is a light conversion layer, may be formed between the liquid crystal panel 220 and the transparent window 250, and more specifically, on the lower surface of the inner region where the light shielding pattern 240 is not formed among the transparent windows 250. Can be. The scattering layer 270 may scatter external light incident from the upper side to increase the brightness of the inner region of the transparent window 250 that is viewed from the outside. Thus, the difference in brightness between the outer area of the transparent window 250 and the inner area can be reduced.

산란층(270)은 상측으로부터 입사되는 외광 중 일부는 산란시키고 나머지 외광은 하측 방향으로 투과 시킬 수 있으며, 액정 패널(220)로부터 방출되는 패널 광을 투과 시켜 투명 윈도우(250)를 통해 디스플레이 영상이 외부에 보여지도록 할 수 있다. 산란층(270)이 입사되는 외광을 산란시키는 정도를 나타내는 산란층(270)의 산란도는 투명 윈도우(250)의 외곽 영역에서 반사 또는 산란되는 광의 양에 의해 결정될 수 있다.The scattering layer 270 may scatter some of the external light incident from the upper side and transmit the remaining external light in the downward direction. The display image may be transmitted through the transparent window 250 by transmitting the panel light emitted from the liquid crystal panel 220. It can be shown externally. The scattering degree of the scattering layer 270 representing the degree of scattering of the external light incident by the scattering layer 270 may be determined by the amount of light reflected or scattered in the outer region of the transparent window 250.

즉, 산란층(270)에 의해 투명 윈도우(250)의 내부 영역에서 산란되는 광의 양이 투명 윈도우(250)의 외곽 영역에서 반사 또는 산란되는 광의 양과 동일 또는 유사하여 상기 내부 영역과 외곽 영역의 밝기 차이가 외부에서 식별되지 않도록, 산란층(270)의 산란도가 결정될 수 있다.That is, the amount of light scattered in the inner region of the transparent window 250 by the scattering layer 270 is the same as or similar to the amount of light reflected or scattered in the outer region of the transparent window 250 so that the brightness of the inner region and the outer region is different. The scattering degree of the scattering layer 270 may be determined so that the difference is not identified externally.

도 2에 도시 된 바와 같이, 외부로부터 입사되는 외광은 투명 윈도우(250)와 차광 패턴(240)의 경계면 부분에서 반사 또는 산란될 수 있다. 예를 들어, 투명 윈도우(250)와 차광 패턴(240) 사이의 계면 차이, 굴절률 차이 또는 그 사이에 미세하게 형성된 에어 갭(air gap)에 의해, 상기 외광이 투명 윈도우(250)와 차광 패턴(240)의 경계면 부분에서 반사되거나 산란될 수 있다. 이러한 외광의 반사 또는 산란에 의해, 외부에서 볼 때 차광 패턴(240)이 형성된 투명 윈도우(250)의 외곽 영역은 차광 패턴(240)의 실제 색, 예를 들어 검은색 보다 조금 더 밝게 보여 질 수 있다.As illustrated in FIG. 2, external light incident from the outside may be reflected or scattered at the interface portion between the transparent window 250 and the light shielding pattern 240. For example, due to an interface difference between the transparent window 250 and the light shielding pattern 240, a difference in refractive index, or an air gap minutely formed therebetween, the external light is formed by the transparent window 250 and the light blocking pattern ( It may be reflected or scattered at the interface portion of 240. Due to the reflection or scattering of external light, the outer region of the transparent window 250 in which the light shielding pattern 240 is formed may be seen to be slightly brighter than the actual color of the light shielding pattern 240, for example, black. have.

한편, 산란층(240)은 투명 윈도우(250) 중 차광 패턴(240)이 형성되지 않은 내부 영역에 형성되어 외부로부터 입사되는 광을 산란시킬 수 있다.The scattering layer 240 may be formed in an inner region of the transparent window 250 where the light shielding pattern 240 is not formed to scatter light incident from the outside.

이에 따라, 외부에서 볼 때 투명 윈도우(250)의 내부 영역과 외곽 영역의 밝기 차이가 감소되도록 할 수 있다.Accordingly, the difference in brightness between the inner and outer regions of the transparent window 250 may be reduced when viewed from the outside.

도 3 및 도 4는 산란층(270)을 형성하는 방법에 대한 실시예들을 도시한 것으로, 산란층(270)은 액정 패널(220)과 투명 윈도우(250) 사이에 형성된 접착층(260)을 이용하여 형성될 수 있다.3 and 4 illustrate embodiments of a method of forming the scattering layer 270, and the scattering layer 270 uses an adhesive layer 260 formed between the liquid crystal panel 220 and the transparent window 250. Can be formed.

도 3을 참조하면, 투명 윈도우(250)의 하측 면에 광을 산란시키는 복수의 산란 입자들(271)을 분산해 도포하여 산란층(270)을 형성할 수 있다. 그에 따라, 외부로부터 입사되는 외광은 산란층(270)에 포함된 산란 입자들(271)에 의해 산란될 수 있다.Referring to FIG. 3, a scattering layer 270 may be formed by dispersing and applying a plurality of scattering particles 271 scattering light onto a lower surface of the transparent window 250. Accordingly, external light incident from the outside may be scattered by the scattering particles 271 included in the scattering layer 270.

또는, 도 4에 도시 된 바와 같이 투명 윈도우(250)의 하측 면을 가공하여 복수의 요철부(272)를 형성하여 산란층(270)을 형성할 수 있다. 그에 따라, 외부로부터 입사되는 외광은 산란층(270)에 포함된 요철부들(272)에 의해 산란될 수 있다.Alternatively, as shown in FIG. 4, the bottom surface of the transparent window 250 may be processed to form a plurality of uneven parts 272 to form the scattering layer 270. Accordingly, external light incident from the outside may be scattered by the uneven parts 272 included in the scattering layer 270.

예를 들어, 투명 윈도우(250)의 하측 표면에 금강사 등과 같은 모래 입자들을 고압 분사하여, 산란층(270)을 구성하는 복수의 요철부들(272)을 형성할 수 있다.For example, sand particles, such as gold steel, etc., may be injected under a high pressure on the lower surface of the transparent window 250 to form a plurality of uneven parts 272 constituting the scattering layer 270.

이상 설명한 바와 같이, 제2실시예에 따른 액정 표시 장치는, 투명 윈도우(250) 중 차광 패턴(240)이 형성되지 않은 내부 영역에 산란층(270)을 형성하여 외부로부터 입사되는 광을 산란시킬 수 있다. 이에 따라, 외부에서 볼 때 투명 윈도우(150)의 내부 영역과 외곽 영역의 밝기 차이가 감소되어 외관 디자인을 개선할 수 있다.As described above, in the liquid crystal display according to the second exemplary embodiment, the scattering layer 270 is formed in an inner region of the transparent window 250 where the light shielding pattern 240 is not formed to scatter light incident from the outside. Can be. Accordingly, the difference in brightness between the inner region and the outer region of the transparent window 150 may be reduced when viewed from the outside, thereby improving appearance design.

도 5는 제3실시예에 따른 액정 표시 장치의 단면도이고, 도 6은 제3실시예에 따른 액정 표시 장치의 평면도이다.5 is a cross-sectional view of the liquid crystal display according to the third embodiment, and FIG. 6 is a plan view of the liquid crystal display according to the third embodiment.

도 5를 참조하면, 액정 표시 장치는 액정 패널(320) 및 투명 윈도우(350)를 포함할 수 있다.Referring to FIG. 5, the liquid crystal display may include a liquid crystal panel 320 and a transparent window 350.

액정 패널(320)은 액정층 및 상기 액정층을 사이에 두고 서로 대향하는 TFT 기판 및 컬러 필터 기판을 포함할 수 있다. 액정 패널(320)은 자체 발광력이 없으므로, 액정 패널(320)의 하측에 위치하는 백라이트 유닛(미도시)을 포함할 수 있다.The liquid crystal panel 320 may include a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween. Since the liquid crystal panel 320 does not have self-luminous power, the liquid crystal panel 320 may include a backlight unit (not shown) positioned below the liquid crystal panel 320.

투명 윈도우(350)는 일정한 간격을 두고 액정 패널(320)의 상측에 배치되어, 외부 충격으로부터 액정 패널(320)을 보호한다. 투명 윈도우(350)는 액정 패널(320)로부터 방출되는 광을 투과 시켜 액정 패널(320)에서 표시되는 영상이 외부에서 보여지도록 한다. 예를 들어, 투명 윈도우(350)는 내충격성 및 광투과성을 가지는 아크릴(acrylic) 등의 플라스틱(plastic) 재질 또는 글래스(glass) 재질로 구성될 수 있다.The transparent window 350 is disposed above the liquid crystal panel 320 at regular intervals to protect the liquid crystal panel 320 from external impact. The transparent window 350 transmits light emitted from the liquid crystal panel 320 so that an image displayed on the liquid crystal panel 320 is viewed from the outside. For example, the transparent window 350 may be made of a plastic or glass material such as acrylic having impact resistance and light transmittance.

액정 패널(320)과 투명 윈도우(350) 사이에는 상부 편광판(340)과 제1 하부 편광판(330)이 위치할 수 있다.An upper polarizer 340 and a first lower polarizer 330 may be positioned between the liquid crystal panel 320 and the transparent window 350.

상부 편광판(340) 및 제1 하부 편광판(330)은 자신을 연신한 방향인 흡수축(연신축) 및 상기 흡수축과 직교하는 투과축(편광축)을 가질 수 있다. 이에 따라, 상부 편광판(340) 및 제1 하부 편광판(330)은 입사되는 광을 서로 직교하는 두 가지 편광 성분으로 나누어, 상기 흡수축과 평행하게 입사된 광은 흡수 또는 분산시키고 상기 투과축과 평행하게 입사된 광은 투과 시킬 수 있다.The upper polarizer 340 and the first lower polarizer 330 may have an absorption axis (stretch axis) that is a direction in which the upper polarizer 340 and the first lower polarizer 330 are stretched, and a transmission axis (polarization axis) orthogonal to the absorption axis. Accordingly, the upper polarizer 340 and the first lower polarizer 330 divide the incident light into two polarization components orthogonal to each other, so that the light incident in parallel with the absorption axis is absorbed or dispersed and parallel with the transmission axis. The incident light can be transmitted.

상부 편광판(340)은 액정 패널(320)의 상측, 보다 상세하게는 투명 윈도우(350)의 하측 면에 배치되어, 액정 패널(320)로부터 방출되는 광 중에서 자신의 투과축과 평행한 방향의 편광 상태를 갖는 광을 투과 시킬 수 있다.The upper polarizer 340 is disposed on the upper side of the liquid crystal panel 320, and more specifically, on the lower side of the transparent window 350 to polarize light in a direction parallel to its transmission axis among the light emitted from the liquid crystal panel 320. Can transmit light having a state.

제1 하부 편광판(330)은 투명 윈도우(350)의 하측, 보다 상세하게는 상부 편광판(340)과 액정 패널(330) 사이에 배치되며, 투명 윈도우(350)의 외곽 영역에 형성될 수 있다.The first lower polarizer 330 may be disposed below the transparent window 350, more specifically, between the upper polarizer 340 and the liquid crystal panel 330, and may be formed in an outer region of the transparent window 350.

또한, 상부 편광판(340)과 제1 하부 편광판(330)은 투과축이 서로 직교하는 방향으로 형성될 수 있으며, 이 경우 상부 편광판(340)과 제1 하부 편광판(330)이 서로 중첩되는 투명 윈도우(350)의 외곽 영역에서는 광이 차단되어 차광패턴으로 작용할 수 있고, 내부 영역은 광 변환층으로 작용할 수 있다. 즉, 제1 하부 편광판(330)은 액정 패널(320) 등으로부터 입사되는 광 중 자신의 투과축과 평행한 방향의 편광 상태를 갖는 광만을 투과시키며, 상기 제1 하부 편광판(330)에서 투과된 광은 상부 편광판(340)의 투과축과 직교하는 방향의 편광 상태를 가지므로 상부 편광판(340)에서 차단될 수 있다.In addition, the upper polarizer 340 and the first lower polarizer 330 may be formed in a direction in which transmission axes are perpendicular to each other. In this case, the transparent window in which the upper polarizer 340 and the first lower polarizer 330 overlap each other In the outer region of 350, light may be blocked to act as a light shielding pattern, and the inner region may serve as a light conversion layer. That is, the first lower polarizer 330 transmits only light having a polarization state in a direction parallel to its transmission axis among the light incident from the liquid crystal panel 320, and is transmitted by the first lower polarizer 330. Since the light has a polarization state in a direction orthogonal to the transmission axis of the upper polarizer 340, the light may be blocked by the upper polarizer 340.

한편, 액정 패널(320)의 하측, 보다 상세하게는 상기 TFT 기판의 하측에는 제2 하부 편광판(310)이 배치될 수 있다. 제2 하부 편광판(310)은 백라이트 유닛(미도시)으로부터 방출되는 광 중에서 자신의 투과축에 평행한 방향의 편광 상태를 갖는 광을 투과 시킬 수 있다.Meanwhile, a second lower polarizer 310 may be disposed below the liquid crystal panel 320, and more specifically, below the TFT substrate. The second lower polarizer 310 may transmit light having a polarization state in a direction parallel to its transmission axis among the light emitted from the backlight unit (not shown).

제2 하부 편광판(310)의 투과축은 상부 편광판(340)의 투과축과 직교하는 방향으로 형성될 수 있다. 그에 따라, 투명 윈도우(350) 중 제1 하부 편광판(330)이 형성되지 않은 내부 영역에서는, 상부 편광판(340)이 제2 하부 편광판(310)을 투과한 후 액정 패널(320)을 통과한 광 중에서 자신의 투과축과 평행한 방향의 편광 상태를 갖는 광을 투과 시킬 수 있다.The transmission axis of the second lower polarizer 310 may be formed in a direction orthogonal to the transmission axis of the upper polarizer 340. Accordingly, in the inner region in which the first lower polarizer 330 is not formed among the transparent windows 350, the light passing through the liquid crystal panel 320 after the upper polarizer 340 passes through the second lower polarizer 310. Can transmit light having a polarization state in a direction parallel to its transmission axis.

도 5에 도시 된 바와 같이, 제1 하부 편광판(330)은 투명 윈도우(350)의 외곽 영역에 형성되며 제2 하부 편광판(310)은 투명 윈도우(350)의 내부 영역에 대응되는 위치에 형성되어, 제1, 2 하부 편광판(330, 310)은 서로 중첩되지 않을 수 있다.As shown in FIG. 5, the first lower polarizer 330 is formed at an outer region of the transparent window 350, and the second lower polarizer 310 is formed at a position corresponding to the inner region of the transparent window 350. The first and second lower polarizers 330 and 310 may not overlap each other.

도 6은 투명 윈도우(350)의 외곽 영역과 내부 영역의 형상에 대한 실시예를 나타내는 도시한 것이다.FIG. 6 illustrates an embodiment of a shape of an outer region and an inner region of the transparent window 350.

도 6을 참조하면, 투명 윈도우(350) 중 외곽 영역(354)에서는, 투과축이 서로 직교하는 상부 편광판(330)과 제1 하부 편광판(330)이 중첩되어, 액정 패널(320) 등으로부터 방출되는 광이 투명 윈도우(350)를 통해 외부로 방출되지 않고 차단될 수 있다. 그에 따라, 투명 윈도우(350)의 외곽 영역(354)은 외부에서 볼 때 검은색을 띄게 될 수 있다.Referring to FIG. 6, in the outer region 354 of the transparent window 350, the upper polarizing plate 330 and the first lower polarizing plate 330 whose transmission axes are perpendicular to each other overlap each other, and are emitted from the liquid crystal panel 320 or the like. The light may be blocked without being emitted to the outside through the transparent window 350. Accordingly, the outer region 354 of the transparent window 350 may become black when viewed from the outside.

또한, 투명 윈도우(350) 중 내부 영역(352)은 광 변환층으로 작용하여, 상부 편광판(330)과 제2 하부 편광판(310)이 액정 패널(320)을 사이에 두고 중첩되어, 제2 하부 편광판(310)을 투과한 후 액정 패널(320)을 통과한 광이 상부 편광판(340)의 투과축과 평행한 방향으로 편광된 후 투명 윈도우(350)를 통해 외부로 방출될 수 있다. 그에 따라, 투명 윈도우(350)의 내부 영역(352)을 통해, 액정 패널(320)에서 표시되는 영상이 외부에 보여지게 될 수 있다.In addition, the inner region 352 of the transparent window 350 serves as a light conversion layer, such that the upper polarizer 330 and the second lower polarizer 310 overlap with the liquid crystal panel 320 interposed therebetween, and thus, the second lower part. After passing through the polarizing plate 310, the light passing through the liquid crystal panel 320 may be polarized in a direction parallel to the transmission axis of the upper polarizing plate 340 and then emitted to the outside through the transparent window 350. Accordingly, an image displayed on the liquid crystal panel 320 may be displayed to the outside through the inner region 352 of the transparent window 350.

상술한 설명에서는 상부 편광판(330)과 제1 하부 편광판(330)의 투과축이 서로 직교하는 경우를 예시하였으나, 상부 편광판(330)과 제1 하부 편광판(330)의 투과축은 서로 직교하는 방향에서 약간씩 틀어질 수 있다. 즉, 상부 편광판(330)의 투과축이 제1 하부 편광판(330)의 투과축과 직교하는 방향을 중심으로 틀어질 수록, 투명 윈도우(350) 중 외곽 영역(354)의 밝기가 증가할 수 있다. In the above description, the transmission axes of the upper polarizer 330 and the first lower polarizer 330 are orthogonal to each other, but the transmission axes of the upper polarizer 330 and the first lower polarizer 330 are perpendicular to each other. It can be twisted slightly. That is, as the transmission axis of the upper polarizer 330 is shifted about the direction orthogonal to the transmission axis of the first lower polarizer 330, the brightness of the outer region 354 of the transparent window 350 may increase. .

따라서 투명 윈도우(350) 중 외곽 영역(354)의 밝기가 내부 영역(350)의 밝기와 유사한 값을 가지도록, 상부 편광판(330)과 제1 하부 편광판(330)의 투과축을 조정할 수 있다.Accordingly, the transmission axes of the upper polarizer 330 and the first lower polarizer 330 may be adjusted such that the brightness of the outer region 354 of the transparent window 350 has a value similar to the brightness of the inner region 350.

도 7은 제4실시예에 따른 액정 표시 장치의 단면도이다.7 is a cross-sectional view of a liquid crystal display according to a fourth embodiment.

도 7을 참조하면, 투명 윈도우(350)와 상부 편광판(340) 사이에 제1 접착층(345)이 형성되어 있을 수 있다. 예를 들어, 투명 윈도우(350)의 하측 면에 레진(resin)을 도포한 후 상부 편광판(340)을 위치시키고, 자외선(UV) 등을 이용해 상기 레진을 경화시켜 제1 접착층(345)을 형성할 수 있으며, 상기와 같이 형성된 제1 접착층(345)에 의해 투명 윈도우(350)의 하측 면에 상부 편광판(340)을 형성할 수 있다.Referring to FIG. 7, a first adhesive layer 345 may be formed between the transparent window 350 and the upper polarizer 340. For example, after the resin is applied to the lower surface of the transparent window 350, the upper polarizing plate 340 is positioned, and the resin is cured using ultraviolet (UV) light to form the first adhesive layer 345. The upper polarizing plate 340 may be formed on the lower surface of the transparent window 350 by the first adhesive layer 345 formed as described above.

또한, 투명 윈도우(350)와 액정 패널(320) 사이의 공간, 보다 상세하게는 투명 윈도우(350)의 하측 면에 형성된 상부 편광판(340)과 액정 패널(320) 사이의 공간에 제2 접착층(335)이 형성될 수 있다.In addition, a second adhesive layer may be formed in the space between the transparent window 350 and the liquid crystal panel 320, more specifically, in the space between the upper polarizing plate 340 and the liquid crystal panel 320 formed on the lower surface of the transparent window 350. 335 may be formed.

투명 윈도우(350)와 액정 패널(320) 사이의 공간에 공기 층(air gap)이 존재하는 경우, 액정 패널(320)로부터 상측으로 방출되는 패널 광이 상기 공기 층에서 산란될 수 있다. 또한, 액정 패널(320)과 상기 공기 층 간의 굴절률 차이 또는 광투과층(350)과 상기 공기 층 간의 굴절률 차이에 의해 상기 패널 광이 굴절될 수 있다. 상기와 같은 패널 광의 산란 또는 굴절 등에 의해, 외부에서 볼 때 투명 윈도우(350)의 내부 영역이 외부 영역보다 밝게 보여질 수 있으며, 디스플레이 영상의 야외 시인성이 감소되는 등 영상의 화질이 저하될 수 있다.When an air gap exists in the space between the transparent window 350 and the liquid crystal panel 320, panel light emitted upward from the liquid crystal panel 320 may be scattered in the air layer. In addition, the panel light may be refracted by a difference in refractive index between the liquid crystal panel 320 and the air layer or a difference in refractive index between the light transmitting layer 350 and the air layer. Due to the scattering or refraction of the panel light as described above, the inner region of the transparent window 350 may be seen to be brighter than the outer region when viewed from the outside, and the image quality of the image may be degraded, such as the outdoor visibility of the display image is reduced. .

따라서 상부 편광판(340)과 액정 패널(320) 사이의 공간에 투명한 아크릴(acrylic)과 같은 레진(resin)으로 이루어진 제2 접착층(335)을 형성하여, 투명 윈도우(350)와 액정 패널(320)을 접착시킬 수 있으며, 그와 동시에 투명 윈도우(350)의 내부 영역에서 발생할 수 있는 광의 산란 또는 굴절을 감소시켜 외부에서 보여지는 투명 윈도우(350)의 내부 영역과 외부 영역 사이의 밝기 차이가 감소되도록 할 수 있다.Accordingly, a second adhesive layer 335 made of a resin, such as acrylic, is formed in a space between the upper polarizer 340 and the liquid crystal panel 320 to form a transparent window 350 and the liquid crystal panel 320. At the same time to reduce scattering or refraction of light that may occur in the inner region of the transparent window 350 so that the difference in brightness between the inner and outer regions of the transparent window 350 seen from the outside is reduced. can do.

도 8은 제5실시예에 따른 액정 표시 장치의 구성에 또 다른 실시예를 단면도로 도시한 것으로, 도 5 내지 도 7을 참조하여 설명한 것과 동일한 것에 대한 설명은 생략하기로 한다.8 is a cross-sectional view illustrating another embodiment of the configuration of the liquid crystal display according to the fifth embodiment, and descriptions of the same elements as those described with reference to FIGS. 5 to 7 will be omitted.

도 8을 참조하면, 액정 패널(320)의 상측에 위치하는 투명 윈도우는 편광 글라스(360)로 구성될 수 있으며, 편광 글라스(360)의 외곽 영역에는 제1 하부 편광판(330)이 형성될 수 있다.Referring to FIG. 8, the transparent window positioned above the liquid crystal panel 320 may be formed of a polarizing glass 360, and a first lower polarizing plate 330 may be formed in an outer region of the polarizing glass 360. have.

편광 글라스(360)와 제1 하부 편광판(330)은 투과축이 서로 직교하는 방향으로 형성될 수 있으며, 그에 따라 제1 하부 편광판(330)과 중첩되는 편광 글라스(360)의 외곽 영역은 광을 차단하여 외부에서 볼 때 검은색을 띄게 될 수 있다.The polarizing glass 360 and the first lower polarizing plate 330 may be formed in a direction in which transmission axes are perpendicular to each other. Accordingly, an outer region of the polarizing glass 360 overlapping the first lower polarizing plate 330 may emit light. It may become black when viewed from the outside by blocking it.

또한, 편광 글라스(360)의 투과축은 액정 패널(320)의 하측에 형성된 제2 하부 편광판(310)의 투과축과 서로 직교할 수 있다. 그에 따라, 액정 패널(320)을 사이에 두고 편광 글라스(360)와 제2 하부 편광판(310)이 중첩되는 편광 글라스(360)의 내부 영역에서는, 제2 하부 편광판(310)을 투과한 후 액정 패널(320)을 통과한 광이 편광 글라스(360)의 투과축과 평행한 방향으로 편광되어 외부로 투과되어, 액정 패널(320)에서 표시되는 영상이 외부에 보여지게 될 수 있다.In addition, the transmission axis of the polarizing glass 360 may be perpendicular to the transmission axis of the second lower polarizing plate 310 formed below the liquid crystal panel 320. Accordingly, in the inner region of the polarizing glass 360 where the polarizing glass 360 and the second lower polarizing plate 310 overlap with the liquid crystal panel 320 interposed therebetween, the liquid crystal is transmitted through the second lower polarizing plate 310. Light passing through the panel 320 is polarized in a direction parallel to the transmission axis of the polarizing glass 360 to be transmitted to the outside, so that an image displayed on the liquid crystal panel 320 may be displayed to the outside.

도 8에 도시 된 바와 같이, 액정 패널(320)과 편광 글라스(360) 사이의 공간에는 접착층(500)이 형성되어 있을 수 있다.As illustrated in FIG. 8, an adhesive layer 500 may be formed in a space between the liquid crystal panel 320 and the polarizing glass 360.

접착층(500)은 투명한 아크릴(acrylic)과 같은 레진(resin)으로 이루어질 수 있으며, 액정 패널(320)과 편광 글라스(360)를 접착시킴과 동시에 편광 글라스(360)의 내부 영역에서 발생할 수 있는 광의 산란 또는 굴절을 감소시켜 외부에서 보여지는 편광 글라스(360)의 내부 영역과 외부 영역 사이의 밝기 차이가 감소되도록 할 수 있다.The adhesive layer 500 may be formed of a resin such as transparent acrylic, and adheres the liquid crystal panel 320 and the polarizing glass 360 and at the same time generates light in the inner region of the polarizing glass 360. Scattering or refraction may be reduced to reduce the difference in brightness between the inner and outer regions of the polarizing glass 360 as seen from the outside.

이상 설명한 바와 같이, 제3 내지 제5실시예에 따른 액정 표시 장치는, 두 개의 편광판을 이용하여 투명 윈도우(350)의 외곽 영역(354)에 차광 패턴이 형성되도록 하고 있다. 또한, 각 편광판의 투과축을 조정함으로써 외곽 영역(354)과 내부 영역(350)의 밝기를 조절하여 양 측 영역(350, 354)의 밝기 차이를 감소시킴으로써 외관 디자인을 개선할 수 있다.As described above, in the liquid crystal display according to the third to fifth embodiments, the light shielding pattern is formed in the outer region 354 of the transparent window 350 using two polarizing plates. In addition, by adjusting the transmission axis of each polarizer, the brightness of the outer region 354 and the inner region 350 may be adjusted to reduce the difference in brightness between the two regions 350 and 354, thereby improving the appearance design.

실시예는 액정 표시 장치에 적용할 수 있다.The embodiment can be applied to a liquid crystal display device.

Claims (15)

액정 패널;Liquid crystal panels; 상기 액정 패널의 상측에 위치하는 투명 윈도우;A transparent window positioned above the liquid crystal panel; 상기 투명 윈도우의 외곽 영역에 형성된 차광 패턴; 및A light blocking pattern formed on an outer region of the transparent window; And 상기 투명 윈도우 중 상기 차광 패턴이 형성되지 않은 내부 영역에 형성되어, 상측으로부터 입사되는 외부 광의 특성을 변화시키는 광 변환층을 포함하는 액정 표시장치.And a light conversion layer formed in an inner region of the transparent window in which the light shielding pattern is not formed to change characteristics of external light incident from an upper side. 제1항에 있어서,The method of claim 1, 상기 광 변환층은,The light conversion layer, 상기 상측으로부터 입사되는 외부 광을 반사시키는 반사 박막층을 포함하는 액정 표시 장치.And a reflective thin film layer reflecting external light incident from the upper side. 제2항에 있어서,The method of claim 2, 상기 반사 박막층은 상기 투명 윈도우의 하측 면에 증착되어 형성된 금속 박막인 액정 표시 장치.The reflective thin film layer is a liquid crystal display device formed by depositing a metal thin film on the lower surface of the transparent window. 제2항에 있어서,The method of claim 2, 상기 액정 패널의 상측에 위치하는 상부 편광판을 더 포함하고,Further comprising an upper polarizing plate positioned on the upper side of the liquid crystal panel, 상기 반사 박막층은 상기 상부 편광판과 상기 투명 윈도우 사이에 위치하며;The reflective thin film layer is positioned between the upper polarizer and the transparent window; 상기 반사 박막층과 상기 상부 편광판 사이에 형성된 접착층을 포함하는 액정 표시 장치.And an adhesive layer formed between the reflective thin film layer and the upper polarizer. 제1항에 있어서,The method of claim 1, 상기 광 변환층은,The light conversion layer, 상기 상측으로부터 입사되는 외부 광을 산란시키는 산란층을 포함하는 액정 표시 장치.And a scattering layer for scattering external light incident from the upper side. 제5항에 있어서,The method of claim 5, 상기 액정 패널과 상기 투명 윈도우 사이의 공간에 형성되는 접착층을 더 포함하고,Further comprising an adhesive layer formed in the space between the liquid crystal panel and the transparent window, 상기 산란층은 상기 접착층과 상기 투명 윈도우 사이에 형성되는 액정 표시 장치.The scattering layer is formed between the adhesive layer and the transparent window. 제6항에 있어서,The method of claim 6, 상기 산란층은 상기 투명 윈도우의 일면에 분산된 복수의 산란 입자들로 구성되는 액정 표시 장치.The scattering layer is composed of a plurality of scattering particles dispersed in one surface of the transparent window. 제6항에 있어서,The method of claim 6, 상기 산란층은 상기 투명 윈도우의 일면에 형성된 복수의 요철부들로 구성되는 액정 표시 장치.The scattering layer is formed of a plurality of irregularities formed on one surface of the transparent window. 제1항에 있어서,The method of claim 1, 상기 광 변환층은, 상기 투명 윈도우와 상기 액정 패널 사이에 개재되는 상부 편광판을 포함하고,The light conversion layer includes an upper polarizing plate interposed between the transparent window and the liquid crystal panel, 상기 차광 패턴은, 상기 투명 윈도우의 외곽 영역에서 상기 상부 편광판과 중첩되는 제1 하부 편광판으로 형성되는 액정 표시 장치.And wherein the light blocking pattern is formed of a first lower polarizer overlapping the upper polarizer in an outer region of the transparent window. 제9항에 있어서,The method of claim 9, 상기 상부 편광판은 상기 투명 윈도우의 하측 면에 위치하고,The upper polarizer is located on the lower side of the transparent window, 상기 상부 편광판과 상기 투명 윈도우 사이에 형성된 제1 접착층을 포함하는 액정 표시 장치.And a first adhesive layer formed between the upper polarizer and the transparent window. 제9항에 있어서,The method of claim 9, 상기 제1 하부 편광판은 상기 상부 편광판과 상기 액정 패널 사이에 형성되는 액정 표시 장치.The first lower polarizer is formed between the upper polarizer and the liquid crystal panel. 제9항에 있어서,The method of claim 9, 상기 상부 편광판의 투과축과 상기 제1 하부 편광판의 투과축은 서로 직교하는 액정 표시 장치.The transmission axis of the upper polarizing plate and the transmission axis of the first lower polarizing plate are perpendicular to each other. 제9항에 있어서,The method of claim 9, 상기 액정 패널의 하측에 위치하는 제2 하부 편광판을 포함하는 액정 표시 장치.And a second lower polarizer disposed under the liquid crystal panel. 제13항에 있어서,The method of claim 13, 상기 상부 편광판의 투과축과 상기 제2 하부 편광판의 투과축은 서로 직교하는 액정 표시 장치.The transmission axis of the upper polarizing plate and the transmission axis of the second lower polarizing plate are perpendicular to each other. 제13항에 있어서,The method of claim 13, 상기 제1, 2 하부 편광판은 서로 중첩되지 않는 위치에 형성되는 액정 표시 장치.The first and second lower polarizers are formed at positions not overlapping with each other.
PCT/KR2009/007512 2008-12-15 2009-12-15 Liquid crystal display device Ceased WO2010071350A2 (en)

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KR1020080126971A KR101637565B1 (en) 2008-12-15 2008-12-15 Liquid crystal display device
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