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WO2017197595A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2017197595A1
WO2017197595A1 PCT/CN2016/082465 CN2016082465W WO2017197595A1 WO 2017197595 A1 WO2017197595 A1 WO 2017197595A1 CN 2016082465 W CN2016082465 W CN 2016082465W WO 2017197595 A1 WO2017197595 A1 WO 2017197595A1
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WO
WIPO (PCT)
Prior art keywords
layer
display device
reflective
light
axis direction
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/CN2016/082465
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English (en)
Chinese (zh)
Inventor
王振伟
谢鹏飞
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.)
Huawei Technologies Co Ltd
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Huawei Technologies 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
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2016/082465 priority Critical patent/WO2017197595A1/fr
Publication of WO2017197595A1 publication Critical patent/WO2017197595A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • 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

Definitions

  • the present invention relates to the field of optics, and in particular to a display device.
  • the solution to the reduction in contrast is to use a transflective structure to achieve contrast enhancement using ambient light.
  • the transflective technology of the display screen changes the ratio of transmission and reflection through the coating.
  • the coating can increase the transmittance, increase the light intensity, increase the reflectivity, and reduce the light intensity.
  • the meaning of transflection is that the transmittance and reflectivity of the film are 50% each, that is, after the light passes through the film, the transmitted light intensity and the reflected light intensity each account for 50%.
  • the transflective is not necessarily a ratio of 50% each, which may be determined according to the actual situation.
  • the existing transflective display device has certain defects.
  • the light in the reflective area is not much, and the brightness of the display device is basically realized by the light in the transmissive area, so the brightness of the display screen is lowered.
  • the brightness of the display screen is lowered.
  • you achieve higher brightness in a dark environment it will increase the corresponding power consumption.
  • Embodiments of the present invention provide a display device for improving brightness of a display device in a dark environment.
  • a first aspect of the embodiments of the present invention provides a display device, including:
  • the upper polarizer, the upper 1/4 wave plate polarizing layer, the color film substrate, the liquid crystal layer, the reflective transmission layer, the array substrate, the lower quarter wave plate polarizing layer and The lower polarizer is sequentially arranged from top to bottom;
  • the backlight is transmitted over the entire area of the reflective transmission layer, and ambient light is totally reflected at the reflective transmission layer.
  • a structure of a display device is provided.
  • the brightness of the display device is determined by the light transmitted from the upper polarizer.
  • the transmissive layer is reflected, the light can be reflected or transmitted. Transmission occurs over the entire area of the layer, so that the brightness of the display device is not low either in an outdoor bright environment or in an indoor dark ring, and the power consumption of the display device can be reduced.
  • the reflective and transmissive layer includes an incident layer, a refractive layer and a reflective layer;
  • the incident layer, the refractive layer, and the reflective layer are sequentially arranged, wherein ambient light is incident from the incident layer, and light refracted at the refractive layer is totally reflected in the reflective layer.
  • a structure of a reflective transmission layer is provided.
  • the reflective transmission layer includes an incident layer, a refractive layer and a reflective layer.
  • ambient light is incident from the incident layer and is refracted in the refractive layer. The light rays need to be totally reflected in the reflective layer, which provides a feasible solution for the embodiment of the present invention.
  • the refracting layer is formed into a prismatic structure, and the inclined surface of the prismatic structure An angle formed with the reflective layer is A; the ambient light is incident from the incident layer, and light refracted at the refractive layer is totally reflected in the reflective layer, satisfying the following relationship: (n 2 / n 1 ) 2 >2(1+cosA)/sin 2 A, wherein the incident layer and the reflective layer have the same refractive index, n 1 , and n 2 is a refractive index of the refractive layer, the refraction The refractive index n 2 of the layer is greater than the refractive index n 1 of the reflective layer.
  • the angle A satisfies: A>2arcsin(n 1 /n 2 ).
  • the angle formed by the inclined surface of the refractive layer and the reflective layer is further required, so that the technical solution of the present invention is more feasible.
  • the backlight is incident from the reflective layer, and the incident Floor Shoot out.
  • the transmission axis direction of the upper polarizer is perpendicular to the transmission axis direction of the lower polarizer, and the transmission axis direction of the upper polarizer is at an angle of 45 degrees to the optical axis direction of the upper quarter-wave plate polarizing layer.
  • the transmission axis direction of the lower polarizer is at an angle of 45 degrees with respect to the optical axis direction of the lower quarter-wave plate polarizing layer, and the optical axis direction of the upper quarter-wave plate polarizing layer and the liquid crystal layer are transparent.
  • the through-axis direction, and parallel to the optical axis direction of the lower quarter-wave plate polarizing layer, is used to control light entering the display device for controlling light entering the display device to adjust the brightness of the display device.
  • the transmission directions of the upper polarizer, the lower polarizer, the upper quarter-wave polarizer layer, and the lower quarter-wave polarizer layer are all required to implement the technical solution of the present invention. Implemented.
  • the material of the incident layer Including: resin material or silicon nitride.
  • the material of the incident layer Including: resin material or silicon nitride.
  • the material of the refractive layer Including: metal oxides.
  • the liquid crystal layer is used The brightness of the liquid crystal layer is adjusted to control the brightness of the display device.
  • the display device adds a 1/4 wave plate polarizing layer to the upper and lower sides, and further adds a reflective transmission layer, and the reflective transmission layer further includes an incident layer, a refractive layer and a reflective layer. Ambient light is totally reflected in the reflective transmission layer, and the backlight is transmitted over the entire area of the reflective transmission layer, so that the loss of light is reduced, and the brightness of the display screen is increased, thereby reducing power consumption.
  • FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing the transmission axis direction of the upper polarizer and the transmission axis direction of the lower polarizer being perpendicular to the embodiment of the present invention
  • FIG. 3 is a schematic diagram of the transmission axis direction of the upper polarizer and the optical axis direction of the upper quarter-wave plate polarizing layer at an angle of 45 degrees according to an embodiment of the present invention
  • 4a is a schematic view showing the optical axis direction of the upper quarter-wave plate polarizing layer and the transmission axis direction of the liquid crystal layer and the optical axis direction of the lower quarter-wave plate polarizing layer, which is provided in the embodiment of the present invention. ;
  • 4b is a view showing the optical axis direction of the upper quarter-wave plate polarizing layer and the transmission axis direction of the liquid crystal layer, and the other parallel to the optical axis direction of the lower quarter-wave plate polarizing layer, according to an embodiment of the present invention.
  • 4c is a view showing an optical axis direction of the upper quarter-wave plate polarizing layer and a transmission axis direction of the liquid crystal layer, and another parallel to the optical axis direction of the lower quarter-wave plate polarizing layer, according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a reflective transmission layer provided in an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of ambient light reflection according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an optical path of ambient light when the brightness of the display device is the brightest in the embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an optical path of a backlight when the brightness of the display device is the brightest in the embodiment of the present invention.
  • FIG. 9 is a schematic diagram of an optical path of ambient light when the brightness of the display device is the darkest in the embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an optical path of a backlight when the brightness of the display device is the darkest in the embodiment of the present invention.
  • the transflective technology of the display device can improve the contrast of the display screen under sunlight, the details of the display screen are not lost, that is, the screen of the display device does not turn black under sunlight.
  • the brightness of the display device is reflected by the light of the reflective area and the light of the transmissive area, but when the display device is in an indoor dark environment, since the light reflected in the reflective area of the display device is reduced, the back light is substantially The light determines the brightness of the display device, so the brightness of the display will drop a lot. If you want to achieve higher brightness in the dark, it will increase the power consumption.
  • the display device is also generally referred to as a display screen.
  • a display layer is mainly provided with a 1/4 wave plate polarizing layer on the upper and lower sides of the liquid crystal layer, and a reflective transmission layer is further added. .
  • FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention.
  • the display device comprises: an upper polarizer 101, an upper quarter-wave polarizing layer 102, a color filter substrate 103, a liquid crystal layer 104, a reflective transmission layer 105, an array substrate 106, a lower quarter-wave plate polarizing layer 107 and a lower polarized light.
  • an upper polarizer 101 an upper quarter-wave polarizing layer 102, a color filter substrate 103, a liquid crystal layer 104, a reflective transmission layer 105, an array substrate 106, a lower quarter-wave plate polarizing layer 107 and a lower polarized light.
  • the upper polarizer 101, the upper quarter-wave polarizing layer 102, the color filter substrate 103, the liquid crystal layer 104, the reflective transmission layer 105, the array substrate 106, the lower quarter-wave polarizing layer 107 and the lower polarizer 108 are sequentially Arranged from top to bottom; the backlight is transmitted over the entire area of the reflective transmission layer 105, and ambient light is totally reflected in the reflective transmission layer.
  • the transmission axis direction of the upper polarizer 101 is perpendicular to the transmission axis direction of the lower polarizer 108, and is understood as shown in FIG. 2;
  • the transmission axis direction of the upper polarizer 101 and the optical axis direction of the upper quarter-wave plate polarizing layer 102 are at an angle of 45 degrees. Please refer to FIG. 3 for understanding. Here, it should be noted that the upper polarizer 101 is used here. There are three possibilities for a 45 degree angle through the axis, (1) a 45 degree angle to the left, and (2) a 45 degree angle to the right, (3) where both cases exist simultaneously;
  • the transmission axis direction of the lower polarizer 108 is at an angle of 45 degrees with the optical axis direction of the lower quarter-wave plate polarizing layer 107.
  • the transmission axis direction of the lower polarizer 108 and the optical axis direction of the lower quarter-wave plate polarizing layer 107 are 45 degrees.
  • the possibility of the angle is also determined, or, when the transmission axis direction of the lower polarizer 108 and the optical axis direction of the lower quarter-wave plate polarizing layer 107 are determined at an angle of 45 degrees from among three possibilities, then the upper polarized light.
  • the possibility that the transmission axis direction of the sheet 101 and the optical axis direction of the upper quarter-wave plate polarizing layer 102 are at an angle of 45 degrees is also determined;
  • the optical axis direction of the upper quarter-wave plate polarizing layer 102 and the transmission axis direction of the liquid crystal layer 104, and the lower The optical axis direction of the 1/4 wave plate polarizing layer 107 is parallel. Since it can be divided into three cases according to FIG. 3, it is understood by referring to FIG. 4a, FIG. 4b, and FIG. 4c, respectively; The light of the display device is displayed to adjust the brightness of the display device.
  • the backlight is a form of illumination, which is often used in liquid crystal display (LCD) displays.
  • LCD liquid crystal display
  • the difference between backlight and ambient light is that the backlight is light that is illuminated from the side or the back, and ambient light, also called front light, is the light that is illuminated from the front. They are used to increase the illumination in low-light environments and the brightness of computer monitors and LCD screens.
  • the liquid crystal layer 104 can also be regarded as a polarizing plate, but the polarization effect of the liquid crystal layer 104 on the light can be controlled by adjusting the magnitude of the voltage, so that the polarization effect of the liquid crystal layer 104 on the light reaches the strongest or weakest, or is the strongest. Between the weakest. When the influence of the polarization of the liquid crystal layer 104 on the light is weakest, the polarization of the light of the liquid crystal layer 104 can be neglected; when the polarization of the liquid crystal layer 104 reaches the strongest, the linearly polarized light passes through the liquid crystal layer 104.
  • a Thin Film Transistor Liquid Crystal Display includes an array substrate 103, a liquid crystal layer 104, and a color filter substrate 106.
  • the array substrate 103 is formed with gate lines and data lines defining pixel regions, and pixel electrodes and thin film transistors are formed in various pixel regions.
  • the color filter substrate 106 may also be referred to as a color filter (Color). Filter), a black matrix and a color filter layer can be formed.
  • the liquid crystal layer 104 between the array substrate 106 and the color filter substrate 103 generates different rotations under different voltages to achieve the brightness of the display, and the color filter layer of the color filter substrate can achieve the display effect of the color image.
  • a reflective transmission layer 105 is added between the liquid crystal layer and the array substrate.
  • the upper quarter-wave plate polarizing layer and the lower quarter-wave plate polarizing layer referred to herein are quarter-wave plates.
  • the phase difference between the ordinary light (o light) and the extraordinary light (e light) is equal to ⁇ /2 or an odd multiple thereof, and such a wafer is called a quarter wave plate or 1 /4 wave plate.
  • the display device in the prior art is generally a transflective structure, that is, The partial area of the display unit is used for the ambient light to be reflected, and the other part of the area is used for the backlight to be transmitted.
  • the area where the reflective transmission layer can be totally reflected is not limited, and the backlight is transmitted.
  • the area is the area of the entire reflective transmission layer, that is, the backlight can be transmitted through the entire reflective transmission layer. Then, compared with the prior art, more light is transmitted, and the brightness of the display device is correspondingly increased.
  • FIG. 5 is a schematic structural diagram of a reflective transmission layer 105 provided in an embodiment of the present invention.
  • the reflective transmission layer 105 further includes an incident layer 1051, a refractive layer 1052, and a reflective layer 1053.
  • the incident layer 1051 is located above the refractive layer 1052, and the refractive layer 1052 is located above the reflective layer 1053, wherein ambient light is incident from the incident layer 1051, and light refracted at the refractive layer 1052 is totally reflected at the reflective layer 1053.
  • a schematic structural view of a reflective transmission layer of a display device showing the principle of total reflection of light.
  • the refractive layer 1052 is formed into a prismatic structure, and the inclined surface of the prismatic structure forms an angle with the reflective layer 1053.
  • ambient light is incident from the incident layer 1051 and occurs in the refractive layer 1052.
  • the refracted light is totally reflected at the reflective layer 1053 and satisfies the following relationship:
  • n 2 /n 1 ) 2 >2(1+cosA)/sin 2 A, wherein the incident layer 1051 and the reflective layer 1053 have the same refractive index, n 1 , and n 2 is the refractive index of the refractive layer 1052.
  • the refractive index n 2 of the refractive layer is greater than the refractive index n 1 of the reflective layer.
  • a relationship is provided that satisfies the total reflection of ambient light in the reflective transmission layer, providing an implementable solution.
  • the refractive index n 2 of the refractive layer 1052 is greater than the refractive index n 1 of the reflective layer 1053.
  • one of the conditions for total reflection of light is provided, that is, the light needs to be from the optically dense medium to the light-diffusing medium.
  • the ratio of n 2 /n 1 is greater than the first threshold; the angle A is greater than the second threshold.
  • n 2 /n 1 a material having a larger value of n 2 /n 1 is preferable, and an angle A is preferably a larger angle, and when the value of n 2 /n 1 is larger, the angle A is The range of values is relatively flexible.
  • n 1 ⁇ n 3 A>arcsin(n 1 /n 2 )+arcsin(n 3 /n 2 ), where n 1 is the refractive index of the incident layer, and n 2 is the refractive layer.
  • the refractive index, n 3 is the refractive index of the reflective layer.
  • the range of angle A is In practical applications, the value of the angle A is generally greater than 60 degrees.
  • the backlight is incident from the reflective layer 1053, and is emitted from the incident layer 1051 through the refractive layer 1052.
  • the material of the incident layer 1051 includes: a resin material or silicon nitride.
  • the resin material or silicon nitride has a low refractive index and a high transmittance.
  • the material of the refractive layer 1052 includes: a metal oxide having a high refractive index and a high transmittance, and a high refractive index of the refractive layer makes the ambient light more susceptible to total reflection.
  • the material of the reflective layer 1053 is generally the same as the material of the incident layer, and is also a resin material having low refractive index and high transmittance or silicon nitride.
  • the liquid crystal layer 104 is configured to adjust a voltage of the liquid crystal layer to control brightness of the display device.
  • the display device displays the brightest brightness.
  • the ambient light path is shown in Figure 7:
  • ambient light also known as sunlight
  • the incoming light is the same direction as the transmission axis direction of the upper polarizer 101, which is linearly polarized light a;
  • the transmission axis direction of the upper polarizer 101 set before the display device is Since the optical axis direction of the upper quarter-wave plate polarizing layer 102 is at an angle of 45 degrees, the linearly polarized light a passes through the upper quarter-wave plate polarizing layer 102 and becomes circularly polarized light b. After the circularly polarized light b passes through the color filter substrate 103, it does not affect the polarization direction of the light, or is circularly polarized light b, so the color filter substrate 103 is not shown in FIG. 7;
  • the circularly polarized light b passes through the liquid crystal layer 104 and becomes linearly polarized light c. It should be noted that the circularly polarized light passes through the polarizing plate and becomes linearly polarized without the requirement of angle, that is, the direction of the circularly polarized light and the liquid crystal. The direction of the transmission axis of the layer is not required, the circularly polarized light passes through the liquid crystal layer 104 and becomes linearly polarized light c;
  • the linearly polarized light d becomes circularly polarized light e through the liquid crystal layer 104 because the transmission axis direction of the previously set liquid crystal layer 104 is parallel to the transmission axis direction of the upper quarter-wave plate polarizing layer 107, and Since the direction of the linearly polarized light d does not change, the direction of the linearly polarized light d is 45 degrees with respect to the transmission axis direction of the liquid crystal layer 104. Therefore, the linearly polarized light d passes through the liquid crystal layer 104 and becomes circularly polarized light e.
  • the liquid crystal layer 104 has the greatest influence on the linearly polarized light d, and becomes circularly polarized light.
  • the influence of the liquid crystal layer on the linearly polarized light can be controlled by adjusting the voltage of the liquid crystal layer.
  • the influence When the influence is maximum, it becomes circularly polarized light, which has the most influence. Hours, ideally, can be considered to have no effect on the polarization of the light, negligible, affecting between the maximum and minimum, the linearly polarized light passing through the liquid crystal layer becomes elliptically polarized light.
  • the circularly polarized light e passes through the color filter substrate 103, the color filter substrate does not affect the polarization of the light;
  • backlight that is, the light emitted by the backlight passes through the lower polarizer 108 as linearly polarized light m, and the linearly polarized light m is the same light direction as the transmission axis direction of the lower polarizer 108;
  • the linearly polarized light m becomes circularly polarized light n through the lower quarter-wave plate polarizing layer 107. It should be noted that this is a physical principle when the incident direction of the light and the lower quarter-wave plate polarizing layer 107 When the optical axis direction is at an angle of 45 degrees, the light transmitted through the lower quarter-wave plate polarizing layer 107 becomes circularly polarized light.
  • the transmission axis direction of the lower polarizer 108 set before the display device is lower and the lower one. Since the optical axis direction of the /4 wave plate polarizing layer 107 is at an angle of 45 degrees, the linearly polarized light m passes through the lower quarter-wave plate polarizing layer 107 and becomes circularly polarized light n.
  • the circularly polarized light n passes through the array substrate 106, and the array substrate does not affect the polarization of the light. Therefore, the array substrate 106 is omitted in FIG. 8 and is not shown;
  • the circularly polarized light n is sequentially passed through the reflective transmission layer 105, directly transmitted, or circularly polarized light n, so the reflective transmission layer 105 is not shown in FIG. 8;
  • the color filter substrate When the linearly polarized light o passes through the color filter substrate 103, the color filter substrate does not affect the polarization of the light, and therefore, the color filter substrate is not shown in FIG. 8;
  • the linearly polarized light o is circularly polarized light p after passing through the upper quarter-wave plate polarizing layer 102.
  • the optical axis direction of the upper quarter-wave plate polarizing layer and the liquid crystal layer are transmitted.
  • the axial direction is parallel to the optical axis direction of the lower quarter-wave plate polarizing layer. Therefore, the direction of the linearly polarized light o is at an angle of 45 degrees to the optical axis direction of the upper quarter-wave plate polarizing layer 102.
  • the 4 wave plate polarizing layer 102 becomes circularly polarized light p;
  • the circularly polarized light p is transmitted through the upper polarizer 101 because the circularly polarized light passes through the polarizing plate to become linearly polarized light, which is not limited.
  • the brightness of the display device is determined together with the reflection of the ambient light and the transmission of the backlight.
  • the display device The brightness is the brightest.
  • the liquid crystal layer has the greatest influence on the polarization of light, and can be realized by adjusting the voltage of the liquid crystal layer, which has been described in the foregoing.
  • the display device displays the darkest brightness.
  • the ambient light path is shown in Figure 9:
  • ambient light also known as ambient light, that is, sunlight
  • the incoming light is the same direction as the transmission axis direction of the upper polarizer 101, which is linearly polarized light a;
  • the liquid crystal layer 104 has no influence on the polarization direction of the light by adjusting the voltage of the liquid crystal layer 104, so, in FIG. Also does not show the liquid crystal layer 104;
  • the circularly polarized light c passes through the upper quarter-wave plate polarizing layer 102 and becomes linearly polarized light d. Since the circularly polarized light passes through the polarizing plate to become linearly polarized light, there is no angle requirement. At this time, the linearly polarized light The polarization direction of d is opposite to the transmission direction of the upper polarizer 101, and the linearly polarized light d cannot be transmitted.
  • the backlight path is shown in Figure 10:
  • backlight that is, light emitted from the backlight passes through the lower polarizer 108 to become linearly polarized light m, and the linearly polarized light m is the same light direction as the transmission axis direction of the lower polarizer 108;
  • the linearly polarized light m is further changed to circularly polarized light n through the lower quarter-wave plate polarizing layer 107, and the circularly polarized light n is a light beam at an angle of 45 degrees with respect to the optical axis direction of the lower quarter-wave plate polarizing layer 107.
  • the circularly polarized light n passes through the array substrate 106, it has no influence on the polarization direction of the light. Therefore, the array substrate 106 is not shown in FIG. 10, and the circularly polarized light n is directly transmitted through the reflective transmission layer 105.
  • the liquid crystal layer can be regarded as a polarizing plate.
  • the liquid crystal layer is adjusted by adjusting the voltage of the liquid crystal layer 104. 104 has no influence on the polarization direction of the light. Therefore, the reflection transmission layer 105 and the liquid crystal layer 104 are not shown in FIG. 10. Similarly, the color filter substrate 103 has no influence on the polarization direction of the light, and therefore, FIG. 10 also The color film substrate 103 is not shown;
  • the polarization direction of the linearly polarized light o is perpendicular to the transmission direction of the upper polarizing plate 101, and the linearly polarized light o cannot be transmitted.
  • the display device since the brightness of the display device is determined by the reflection of the reflected light and the transmission of the backlight, when neither the linearly polarized light d nor the linearly polarized light o can be seen from the upper polarizing plate 101, the display device The brightness is the darkest.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Polarising Elements (AREA)

Abstract

La présente invention concerne un dispositif d'affichage pour réguler la luminosité d'un écran d'affichage, comprenant : un élément polarisant supérieur (101), une couche polarisée de lame 1/4 d'onde supérieure (102), un substrat de film coloré (103), une couche de cristaux liquides (104), une couche de réflexion-transmission (105), un substrat de matrice (106), une couche polarisée de lame 1/4 d'onde inférieure (107) et un élément polarisant inférieur (108). L'élément polarisant supérieur (101), la couche polarisée de lame 1/4 d'onde supérieure (102), le substrat de film coloré (103), la couche de cristaux liquides (104), la couche de réflexion-transmission (105), le substrat de réseau (106), la couche polarisée de lame 1/4 d'onde inférieure (107) et l'élément polarisant inférieur (108) sont agencés de haut en bas en séquence. La transmission de rétroéclairage se produit sur la surface totale de la couche de réflexion-transmission (105), et une réflexion totale de la lumière ambiante se produit sur la couche de réflexion-transmission (105).
PCT/CN2016/082465 2016-05-18 2016-05-18 Dispositif d'affichage Ceased WO2017197595A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109359627A (zh) * 2018-11-23 2019-02-19 上海思立微电子科技有限公司 组件及电子设备
CN113176685A (zh) * 2021-05-28 2021-07-27 福州京东方光电科技有限公司 显示面板和显示装置
CN114442385A (zh) * 2020-10-30 2022-05-06 京东方科技集团股份有限公司 一种显示模组、显示装置和显示装置的控制方法
CN115543130A (zh) * 2021-08-28 2022-12-30 华为技术有限公司 显示装置以及电子设备

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