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WO2013189054A1 - 立体影像显示器的显示面板 - Google Patents

立体影像显示器的显示面板 Download PDF

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Publication number
WO2013189054A1
WO2013189054A1 PCT/CN2012/077288 CN2012077288W WO2013189054A1 WO 2013189054 A1 WO2013189054 A1 WO 2013189054A1 CN 2012077288 W CN2012077288 W CN 2012077288W WO 2013189054 A1 WO2013189054 A1 WO 2013189054A1
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WO
WIPO (PCT)
Prior art keywords
pixel region
sub
pixel
red
blue
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/CN2012/077288
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English (en)
French (fr)
Inventor
廖巧生
萧嘉强
陈峙彣
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.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology 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.)
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Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US13/574,527 priority Critical patent/US20130335646A1/en
Publication of WO2013189054A1 publication Critical patent/WO2013189054A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/52—RGB geometrical arrangements

Definitions

  • the present invention relates to a stereoscopic image display technology, and more particularly to a display panel of a stereoscopic image display.
  • stereoscopic displays capable of rendering stereoscopic images (3D) Display
  • 3D display device can present the far-near relationship of the object and conform to the human visual form, it is expected to become the development direction of the next generation display.
  • FIG. 1 shows a schematic diagram of the operation of a conventional stereoscopic display.
  • the existing stereoscopic display mainly adopts phase delay (pattern Retarder technology, with polarized glasses, to present stereoscopic images.
  • a linear polarizing plate 12 is disposed on the side of the thin film transistor array substrate (not shown) of the display, and a ⁇ /4 array wave plate 14 is disposed on the side of the color filter substrate (not shown).
  • Light emitted from a backlight module (not shown) of the display passes through the linear polarizing film 12 and is polarized to form linearly polarized light.
  • the optical axis of the linearly polarizing plate 12 is at an angle of 90° to the horizontal direction H, so that only the light having the polarization direction of the vertical direction can pass through the linear polarizing plate 12, that is, the light passing through the linear polarizing plate 12 is vertically polarized light.
  • the optical axis direction of the ⁇ /4 array wave plate 14 is two, one is that the optical axis direction is at an angle of 45° with respect to the horizontal direction, and the other optical axis direction is at an angle of 135° with the horizontal direction.
  • the optical axes are alternately arranged in the vertical direction as shown in FIG. Therefore, the vertically polarized light from the linear polarizing plate 12 passes through the ⁇ /4 array wave plate 14 to simultaneously form right-handed circularly polarized light and left-handed circularly polarized light.
  • the polarized glasses 16 matched with the stereoscopic display are composed of ⁇ /4 wave plates 161 and 162 and vertical polarizing plates 163 and 164, and the ⁇ /4 wave plates 161 and 162 can be attached to the vertical polarizing plates 163 and 164, respectively.
  • the optical axis directions of 164 are perpendicular to the horizontal direction H.
  • the left-handed circularly polarized light from the ⁇ /4 array wave plate 14 can enter the right eye of the viewer through the right lens, and the left-handed circularly polarized light is absorbed by the left lens and does not enter the viewer's left eye.
  • the right-handed circularly polarized light from the ⁇ /4 array wave plate 14 can enter the right eye of the viewer through the left lens, and the right-handed circularly polarized light is absorbed by the right lens and does not enter the viewer's right eye. .
  • the image for viewing by the viewer's right eye and the image for viewing by the viewer's left eye are appropriately arranged corresponding to the optical axis directions of the ⁇ /4 array wave plate 14 by 45° and 135°, so that the right eye image is ⁇ .
  • the /4 array wave plate 14 is formed, left-hand circularly polarized light is formed, and the left-eye image is formed by the ⁇ /4 array wave plate 14 to form right-handed circularly polarized light, and vice versa, when the viewer views through the polarized glasses 16, the image can be reached.
  • the left eye only sees the left eye image, while the right eye only sees the right eye image, so that the left and right eyes of the person receive different images and can feel the stereoscopic effect of the image.
  • FIG. 2 shows a schematic diagram of a pixel arrangement of a conventional display panel
  • FIG. 3 shows a schematic diagram of a pixel arrangement of another conventional display panel.
  • the display panel includes a plurality of pixel regions, and each of the pixel regions includes at least a red (R) sub-pixel region, a blue (B) sub-pixel region, and a green (G) sub-pixel region.
  • the sub-pixel regions 17 of the display panel are defined by mutually interlaced scan lines 11 and data lines 13.
  • Each of the sub-pixel regions 17 is provided with a transistor 15 for controlling data signals. Write.
  • the RGB sub-pixel regions in one pixel region are arranged in parallel along the horizontal direction; and in the display panel of FIG.
  • the RGB sub-pixel regions in one pixel region are arranged in parallel along the vertical direction.
  • the pixel structure in FIG. 3 is a three-gate (tri-gate) pixel structure.
  • the advantage of this pixel structure is that the RGB sub-pixel regions share one data line, so that the number of data lines can be reduced as a whole.
  • the number of source drive wafers can also be reduced accordingly.
  • the pixel structure in FIG. 3 increases the number of required scan lines and the number of gate drive wafers, the cost of the source drive wafer is relatively high, so the use of a three-gate pixel structure can reduce the source drive. The number of wafers saves costs.
  • FIG. 4 shows a schematic diagram of a three-gate pixel structure and a phase retardation film in a conventional stereoscopic display panel.
  • a film-type patterned film Retarder, FPR FPR
  • the phase retardation film 19 in FIG. 4 functions as the ⁇ /4 array wave plate 14 in FIG.
  • the so-called image crosstalk is a signal that one eye sees the other eye. For example, the right eye sees the image originally providing the left eye, and the left eye sees the image originally intended to be supplied to the right eye, so that the interference signal will be the same as the original image signal. Overlapping, causing ghosting (ghost Image) The more severe the ghosting situation, the smaller the viewing angle.
  • FIG. 5 shows a schematic diagram of a prior art 3D display system implemented with a 1/4 lambda phase retardation diaphragm.
  • the display panel in response to the display of the stereoscopic image, the display panel may be divided into a left pixel area 181 displaying a left eye image and a right pixel area 182 displaying a right eye image, and a black matrix (black) is disposed between each sub-pixel area.
  • Matrix, BM) 183 to prevent dark state light leakage.
  • Fig. 6 shows a conventional schematic diagram for reducing the viewing angle by increasing the width of the black matrix.
  • the width of the black matrix in FIG. 6 is much larger than that in the black matrix in FIG. 5.
  • the increase in the width of the black matrix causes a large amount of light emission at a large angle to be reduced, so that the viewer can only see the unclear if viewed from the side.
  • the image which also protects the information displayed on the image, can achieve a certain degree of benefit. However, this manner will lower the brightness of the entire display panel, which has an adverse effect on contrast and image quality.
  • An object of the present invention is to provide a display panel of a stereoscopic image display to further reduce the viewing angle of the display panel of the stereoscopic image display, thereby improving the confidentiality of the displayed image information and preventing information leakage.
  • the present invention provides a display panel for a stereoscopic image display, comprising: a backlight for providing backlight; a thin film transistor array substrate including a plurality of pixel regions, each pixel region including at least a red sub-pixel region, blue a color sub-pixel region and a green sub-pixel region, wherein the thin film transistor array substrate is provided with a plurality of scan lines and a plurality of data lines, each sub-pixel region being defined by an area formed by interlacing the scan lines and the data lines; a color filter substrate, wherein the red, blue, and green sub-pixel regions on the thin film transistor array substrate are respectively provided with red, blue, and green filters; and a first polarizing plate and a second polarizing film are respectively disposed behind the display panel On the side and the front side, the light emitted by the backlight plate has two different polarization directions after passing through the first polarizing plate and the second polarizing plate; wherein the pixel structure on the thin film transistor array substrate is a three-gate pixel
  • the blue sub-pixel region in each pixel region of the thin film transistor array substrate is located at an intermediate position, the red sub-pixel region is located at an upper side, and the green sub-pixel region is located at a lower side.
  • the blue sub-pixel region in each pixel region of the thin film transistor array substrate is located at an intermediate position, the green sub-pixel region is located at an upper side, and the red sub-pixel region is located at a lower side.
  • the first polarizer is a vertical polarizer whose optical axis is perpendicular to the horizontal direction; and the second polarizer is a phase retardation film which is composed of 1/4 ⁇ and -1/4 ⁇
  • the phase delay block is arranged to form, and the light emitted by the backlight plate sequentially passes through the vertical polarizing plate and the phase retardation film to form left-handed circularly polarized light and right-handed circularly polarized light.
  • a display panel of a stereoscopic image display comprising: a backlight for providing backlight; a thin film transistor array substrate including a plurality of pixel regions, each pixel region including at least a red sub-pixel a region, a blue sub-pixel region, and a green sub-pixel region.
  • the thin film transistor array substrate is provided with a plurality of scan lines and a plurality of data lines, and each of the sub-pixel regions is an area formed by interlacing the scan lines and the data lines.
  • the color filter substrate is provided with red, blue and green filter segments respectively corresponding to the red, blue and green sub-pixel regions on the thin film transistor array substrate; and a vertical polarizing plate is disposed on one side of the thin film transistor array substrate The axis is perpendicular to the horizontal direction; and a phase retardation film is disposed on one side of the color filter substrate, and is composed of 1/4 ⁇ and -1/4 ⁇ phase retardation block arrangements, and the light emitted by the backlight plate sequentially passes through the
  • the vertical polarizing plate and the phase retardation film form left-handed circularly polarized light and right-handed circularly polarized light; wherein the red, blue, and green sub-pixel regions in each pixel region are along a vertical direction Arranged in parallel, wherein each pixel region and a blue sub-pixel regions in an intermediate position, while the red sub-pixel region and the green sub-pixel region located on upper and lower sides.
  • the blue sub-pixel region in each pixel region of the thin film transistor array substrate is located at an intermediate position, the red sub-pixel region is located at an upper side, and the green sub-pixel region is located at a lower side.
  • the blue sub-pixel region in each pixel region of the thin film transistor array substrate is located at an intermediate position, the green sub-pixel region is located at an upper side, and the red sub-pixel region is located at a lower side.
  • Another aspect of the present invention provides a display panel of a stereoscopic image display.
  • the rear side and the front side of the display panel are respectively provided with a first polarizing plate and a second polarizing plate, and the backlight of the display panel sequentially passes through the first polarization.
  • the sheet and the second polarizer have two different polarization directions
  • the display panel of the stereoscopic image display comprises: a plurality of scan lines and a plurality of data lines; and a plurality of pixel areas, each of the pixel areas at least containing red a sub-pixel region, a blue sub-pixel region and a green sub-pixel region, each sub-pixel region being defined by an area in which the scan lines and the data lines are interlaced with each other, each pixel region corresponding to at least three scan lines and one data line
  • the three scan lines respectively provide scan signals to the red, blue and green sub-pixel regions, and the red, blue and green sub-pixel regions receive pixel data through the same data line; wherein the red, blue and green sub-pixel regions in each pixel region are along The vertical direction is arranged in parallel, and the blue sub-pixel area in each pixel area is located at the middle position, and the red sub-pixel area and the green sub-pixel area are located on the upper and lower sides.
  • the blue sub-pixel region in each pixel region is at an intermediate position, the red sub-pixel region is on the upper side, and the green sub-pixel region is on the lower side.
  • the blue sub-pixel region in each pixel region is at an intermediate position
  • the green sub-pixel region is on the upper side
  • the red sub-pixel region is on the lower side
  • the red, blue and green sub-pixel regions in each pixel region are arranged in parallel along the vertical direction, the blue sub-pixel region in each pixel region is located at the middle position, and the red sub-pixel region and the green sub-pixel region are located. Upper and lower sides. Such an arrangement can further reduce the viewing angle of the display panel of the stereoscopic image display, thereby improving the confidentiality of the displayed image information and preventing information leakage.
  • Figure 1 shows a schematic diagram of the operation of a conventional stereoscopic display.
  • FIG. 2 shows a schematic diagram of a pixel arrangement of a conventional display panel.
  • FIG. 3 shows a schematic diagram of a pixel arrangement of another conventional display panel.
  • FIG. 4 shows a schematic diagram of a three-gate pixel structure and a phase retardation film in a conventional stereoscopic display panel.
  • Figure 5 shows a schematic diagram of a prior art 3D display system implemented with a 1/4 lambda phase retardation diaphragm.
  • Figure 6 shows a conventional schematic diagram for reducing the viewing angle by increasing the width of the black matrix.
  • Fig. 7 is a view showing a display panel of the stereoscopic image display of the present invention.
  • Figure 8 is a schematic view showing polarized glasses used in conjunction with the stereoscopic image display of the present invention.
  • Fig. 9 is a view showing a pixel structure and a phase retardation film formed on the thin film transistor array and the color filter substrate of Fig. 7.
  • Fig. 10 is a view showing another example of the pixel structure formed on the thin film transistor array and the color filter substrate of Fig. 7 and the phase retardation film.
  • FIG. 7 is a schematic view showing a display panel of a stereoscopic image display of the present invention
  • FIG. 8 is a schematic view showing polarized glasses used in conjunction with the stereoscopic image display of the present invention.
  • the display panel of the stereoscopic image display of the present invention comprises a backlight 21, a polarizing plate 22, a thin film transistor array substrate 23, a liquid crystal layer 24, and a color filter substrate 25.
  • the liquid crystal layer 24 is disposed between the thin film transistor array substrate 23 and the color filter substrate 25, and the color filter substrate 25 may include a filter in which red (R), blue (B), and green (G) color patches are disposed.
  • Array 252, polarizer 254, and glass carrier 256 As shown in Fig. 8, the polarized glasses 30 are composed of left and right polarizing lenses 33, 34 and polarizing films 31, 32 attached thereto.
  • the backlight panel 21 is used to provide a backlight source such as a cold cathode tube and a light emitting diode (LED) light source.
  • the polarizing plate 22 is disposed on the rear side of the display panel, and the polarizing plate 254 is disposed on the front side of the display panel.
  • the polarizing plate 22 and the polarizing plate 254 are used to polarize light, and the light provided by the backlight plate 21 is passed through the polarizing plate 22.
  • the thin film transistor disposed on the thin film transistor array substrate 52 can control the deflection of the liquid crystal molecules in the liquid crystal layer 54 to change the angle of the light polarization, and the light having different polarization directions passes through the color filter substrate 56.
  • the light passes through the polarizer 254 and has two different polarization directions.
  • the image to be accessed to the viewer's left eye has a first polarization direction
  • the image to enter the viewer's right eye has a second polarization direction
  • the polarized glasses 30 are designed as left lenses only.
  • the left eye image with the first polarization direction is allowed to pass, and the right lens allows only the right eye image with the second polarization direction to pass.
  • the left eye only sees the image provided by the display to the left eye
  • the right eye only sees the image provided by the display to the right eye, using the parallax principle to view
  • the person can perceive a three-dimensional stereo image.
  • the polarizing plate 22 is a linear polarizing plate whose optical axis is at an angle of 90° to the horizontal direction, so that only the light having the polarizing direction in the vertical direction can pass through the vertical polarizing plate 22, and the light passing through the vertical polarizing plate 22 is vertical. polarized light.
  • the polarizing plate 254 is a phase retardation film (film-type) Patterned retarder, FPR), which is composed of a 1/4 ⁇ film and a -1/4 ⁇ film array, which are alternately arranged in the vertical direction, that is, one row is a 1/4 ⁇ phase retardation film, and the next row is -1/4 ⁇ phase The retardation film is again a 1/4 ⁇ phase retardation film, and so on (see Figure 9).
  • FPR phase retardation film
  • the polarized light from the vertical polarizing film 22 passes through the phase retardation film 254 to simultaneously form right-handed circularly polarized light and left-handed circularly polarized light.
  • the ⁇ /4 diaphragm 31 corresponding to the left spectacle lens has an optical axis direction of 45°
  • the optical axis direction of the ⁇ /4 diaphragm 32 corresponding to the right spectacle lens is 135°
  • the optical axis directions of the left and right polarizing lenses 33 and 34 are both perpendicular to the horizontal direction.
  • the left-handed circularly polarized light from the phase retardation film 254 can enter the right eye of the viewer through the right lens, and the left-handed circularly polarized light is absorbed by the left lens and does not enter the viewer's left eye, but comes from
  • the right-handed circularly polarized light of the phase retardation film 254 can enter the right eye of the viewer through the left lens, and the right-handed circularly polarized light is absorbed by the right lens and does not enter the viewer's right eye.
  • the phase retardation film 254 can be attached to the glass carrier 256 of the color filter substrate 25, followed by the formation of the filter array 252, as shown in FIG.
  • the filter array 252 may also be formed on the glass carrier 256, and a phase retardation film 254 may be formed thereon.
  • Fig. 9 is a view showing a pixel structure and a phase retardation film formed on the thin film transistor array and the color filter substrate of Fig. 7.
  • a plurality of scan lines 231 and a plurality of data lines 233 are disposed on the thin film transistor array substrate 23.
  • the scan lines 231 are used to provide scan signals, and the data lines 233 provide pixel data, scan lines 231 and data lines.
  • a transistor 235 is provided at the interleaving of 233 for controlling the writing of pixel data.
  • the thin film transistor array substrate 23 includes a plurality of pixel regions, and each of the pixel regions 237 includes at least a red sub-pixel region, a blue sub-pixel region, and a green sub-pixel region, and each of the sub-pixel regions 237 is composed of the scan lines 231 and the like.
  • the areas where the data lines 233 are interleaved are defined.
  • the red, blue and green sub-pixel regions corresponding to the thin film transistor array substrate 23 on the color filter substrate 25 are respectively provided with red, blue and green filters, and the filter arrays of red, blue and green blocks as shown in FIG. 252.
  • the pixel structure shown in FIG. 9 is a three-gate pixel structure in which red, green, and green sub-pixel regions in each pixel region are arranged in parallel along a vertical direction, and each pixel region corresponds to at least three scans.
  • Line 231 and a data line 233 which respectively provide scan signals to the red, blue and green sub-pixel regions, and the red, blue and green sub-pixel regions receive pixel data through the same data line 233.
  • the advantage of such a pixel structure is that the number of data lines 233 can be reduced as a whole, and the number of source-driven wafers can therefore be reduced, thereby saving costs.
  • the pixel structure in FIG. 9 increases the number of required scan lines 231 and the number of gate drive wafers, the cost of the source drive wafer is relatively high, so the use of a three-gate pixel structure can reduce the source. Drive the number of wafers and save costs.
  • the red, blue and green sub-pixel regions in each pixel region are arranged in parallel along the vertical direction, the blue sub-pixel region in each pixel region is located at the middle position, and the red sub-pixel region and the green sub-pixel region are located. Upper and lower sides.
  • the blue sub-pixel region in each pixel region is at an intermediate position, the red sub-pixel region is on the upper side, and the green sub-pixel region is on the lower side, as shown in FIG.
  • the blue sub-pixel region in each pixel region is at an intermediate position, the green sub-pixel region is on the upper side, and the red sub-pixel region is on the lower side, as shown in FIG.
  • Such an arrangement can further reduce the viewing angle of the display panel of the stereoscopic image display, thereby improving the confidentiality of the displayed image information and preventing information leakage.
  • the green has the largest stimulus value to the human eye, that is, the human eye is most sensitive to the perception of green, and the red is the second, and the blue is the smallest. Therefore, the present invention will be the red sub-pixel region and the green sub-pixel region in each pixel region. It is set on the upper and lower sides, which makes the crosstalk more intense when displaying stereoscopic images, thus reducing the viewing angle and further protecting privacy.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Description

立体影像显示器的显示面板 技术领域
本发明涉及一种立体影像显示技术，尤指一种立体影像显示器的显示面板。
 背景技术
随着液晶显示器的蓬勃发展，能够呈现立体影像的立体显示器（3D display）已逐渐进入市场。由于3D显示装置能够呈现物体的远近关系，与人类的视觉形态相符，故其可望成为下一世代显示器的发展方向。
图1显示一种现有的立体显示器工作原理的示意图。现有的立体显示器主要是采用相位延迟（pattern retarder）技术，配合偏光眼镜，来呈现出立体影像。如图1所示，在显示器的薄膜晶体管阵列基板（未图示）一侧设置有一线偏振片12，而在彩色滤光片基板（未图示）一侧设置有一λ/4阵列波片14。从显示器之背光模组（未图示）发出的光线，经过线偏振片12后会被极化形成线偏振光。线偏振片12的光轴与水平方向H成90°夹角，故只有偏振方向为垂直方向的光线能够通过线偏振片12，也就是说，通过线偏振片12后的光线为垂直偏振光。再者，λ/4阵列波片14的光轴方向有两种，一种为光轴方向与水平方向成45°夹角，另一种光轴方向与水平方向成135°夹角，这两种光轴沿着垂直方向呈交替排列，如图1所示。因此，来自线偏振片12的垂直偏振光经过λ/4阵列波片14后会同时形成右旋圆偏振光和左旋圆偏振光。
与立体显示器搭配的偏光眼镜16是由λ/4波片161、162和垂直偏振片163、164所组成，λ/4波片161、162可分别贴附在垂直偏振片163、164上而构成偏光眼镜16的镜片，其中对应左眼镜片的λ/4波片161其光轴方向为45°，对应右眼镜片的λ/4波片162其光轴方向为135°，而垂直偏振片163、164的光轴方向皆与水平方向H垂直。因此，来自λ/4阵列波片14的左旋圆偏振光可以通过右眼镜片而进到观赏者的右眼，左旋圆偏振光因会被左眼镜片吸收而不会进到观赏者左眼，而来自λ/4阵列波片14的右旋圆偏振光可以通过左眼镜片而进到观赏者的右眼，右旋圆偏振光因会被右眼镜片吸收而不会进到观赏者右眼。
因此，只要将供观赏者右眼观看的影像和供观赏者左眼观看的影像分别对应λ/4阵列波片14的光轴方向45°、135°作适当的编排，使右眼影像出λ/4阵列波片14后形成左旋圆偏振光，左眼影像出λ/4阵列波片14后形成右旋圆偏振光，反之亦可，则观赏者通过偏光眼镜16来观看时，即可达到左眼只看到左眼影像，而右眼只看到右眼影像，如此人的左右眼接收到不同画面而能感受到影像立体效果。
图2显示一种现有的显示面板的像素排列的示意图，图3显示另一种现有的显示面板的像素排列的示意图。显示面板上包含多个像素区，每个像素区至少包含有红色（R）子像素区（sub-pixel）、蓝色（B）子像素区和绿色（G）子像素区。如图2和图3所示，显示面板的子像素区17都是由互相交错的扫描线11和资料线13定义出的，每个子像素区17内设置有一晶体管15，用来控制资料信号的写入。图2的显示面板中，一个像素区内的RGB子像素区是沿着水平方向并行排列的；而图3的显示面板中，一个像素区内的RGB子像素区是沿着垂直方向并行排列的。图3中的像素结构是一种三闸极式（tri-gate）的像素结构，这种像素结构的优点在于，RGB子像素区共用一条资料线，因此整体来说可以减少资料线的数目，源极驱动晶片的数目也可以因此降低。虽然图3中的像素结构会使得所需的扫描线数目增加、闸极驱动晶片的数目增多，但是源极驱动晶片的成本相对较高，因此采用三闸极式的像素结构可以减少源极驱动晶片的数量，节省成本。
图4显示一种现有的立体显示面板中结合三闸极式像素结构和相位延迟膜的示意图。如图4所示，相位延迟膜（film-type patterned retarder, FPR）19是由1/4λ膜和-1/4λ膜排列组成的，即一行（row）是1/4λ相位延迟膜，下一行是-1/4λ相位延迟膜，再下一行又是1/4λ相位延迟膜，以此类推。图4中的相位延迟膜19的作用相当于图1中的λ/4阵列波片14，能够将线偏振光转变形成左旋圆偏振光和右旋圆偏振光，也就是说，线偏振光经过1/4λ膜和-1/4λ膜时，会分别形成左旋圆偏振光和右旋圆偏振光，再经过偏光眼镜的1/4λ膜片和垂直偏振片时，会分别进入左右眼，左右眼接受到稍有差异的图像，在大脑中合成3D图像。
再者，使用者在使用显示装置时，常常不想让其他人观看到其显示内容，例如各种文件，因此在3D显示器方面，开发一种对显示的影响资讯保密、防止信息泄露的技术，也是一个重要的发展方向。
3D显示器因本身有影像串扰（crosstalk）的问题，其可视角度原本就不高，因此在防止信息泄露方面即具有一定的能力，但仍有待改善的空间。所谓的影像串扰是一只眼睛看到另一只眼睛的信号，例如右眼看到原本要提供左眼的影像，而左眼看到原本要提供给右眼的影像，如此干扰信号会与原本图像信号重叠，而造成鬼影（ghost image），鬼影的情形越严重，则可视角度越小。
图5显示一种现有的采用1/4λ相位延迟膜片实现的3D显示系统的示意图。如图5所示，因应立体影像的显示，显示面板上可划分成显示左眼影像的左像素区181和显示右眼影像的右像素区182，各个子像素区之间设置有黑色矩阵（black matrix, BM）183，以防止暗态漏光。影像信号从左像素区181边界之黑色矩阵发射出的光以大于θ角传播时，其光线会进入右眼的相位延迟膜片直至右眼镜片而被右眼看到，从而造成影像串扰。
另一方面，图6显示一种现有的利用增加黑色矩阵的宽度来降低可视角度的示意图。图6中黑色矩阵的宽度相较于图5中的黑色矩阵增加了许多，黑色矩阵宽度的增加会使得大角度的出光量减少许多，因此观赏者若从侧边观看只能看到不清楚的影像，此亦对显示影像之资讯保密可以达到一定程度的助益。然而，此种方式将使得显示面板整体的亮度降低，对于对比度和影像品质上有不利的影响。
以上，如何进一步提升3D显示器的保密能力，为目前产业界重要的课题之一。
 技术问题
本发明之一目的在于提供一种立体影像显示器的显示面板，以进一步缩小立体影像显示器之显示面板的可视角度，从而提升显示之影像资讯的保密能力，防止信息泄露。
 技术解决方案
本发明提供一种立体影像显示器的显示面板，包含：一背光板，用于提供背光；一薄膜晶体管阵列基板，其上包含多个像素区，每个像素区至少包含有红色子像素区、蓝色子像素区和绿色子像素区，该薄膜晶体管阵列基板上设置有多条扫描线和多条资料线，每个子像素区都是由这些扫描线和这些资料线互相交错形成的区域所定义；一彩色滤光片基板，对应该薄膜晶体管阵列基板上的红蓝绿子像素区分别设置有红蓝绿滤波片；以及一第一偏振片和一第二偏振片，分别设置在该显示面板后侧及前侧，该背光板发出的光线经过该第一偏振片和该第二偏振片后具有两个不同的偏振方向；其中该薄膜晶体管阵列基板上的像素结构为一种三闸极式像素结构，每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，且其中每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。
在本发明之一实施例中，该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，红色子像素区位于上侧，而绿色子像素区位于下侧。
在本发明之一实施例中，该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，绿色子像素区位于上侧，而红色子像素区位于下侧。
在本发明之一实施例中，该第一偏振片为一垂直偏振片，其光轴与水平方向垂直；以及该第二偏振片为一相位延迟膜，其由1/4λ和-1/4λ相位延迟区块排列组成，该背光板发出的光线依序经过该垂直偏振片和该相位延迟膜后会形成左旋圆偏振光和右旋圆偏振光。
本发明另一方面提供一种立体影像显示器的显示面板，包含：一背光板，用于提供背光；一薄膜晶体管阵列基板，其上包含多个像素区，每个像素区至少包含有红色子像素区、蓝色子像素区和绿色子像素区，该薄膜晶体管阵列基板上设置有多条扫描线和多条资料线，每个子像素区都是由这些扫描线和这些资料线互相交错形成的区域所定义；一彩色滤光片基板，对应该薄膜晶体管阵列基板上的红蓝绿子像素区分别设置有红蓝绿滤波片；一垂直偏振片，设置于该薄膜晶体管阵列基板一侧，其光轴与水平方向垂直；以及一相位延迟膜，设置于该彩色滤光片基板一侧，其由1/4λ和-1/4λ相位延迟区块排列组成，该背光板发出的光线依序经过该垂直偏振片和该相位延迟膜后会形成左旋圆偏振光和右旋圆偏振光；其中每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，且其中每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。
在本发明之一实施例中，该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，红色子像素区位于上侧，而绿色子像素区位于下侧。
在本发明之一实施例中，该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，绿色子像素区位于上侧，而红色子像素区位于下侧。
本发明另一方面提供一种立体影像显示器的显示面板，该显示面板的后侧和前侧分别设置有一第一偏振片和一第二偏振片，该显示面板的背光依序经过该第一偏振片和该第二偏振片后具有两个不同的偏振方向，所述立体影像显示器的显示面板包含：多条扫描线和多条资料线；以及多个像素区，每个像素区至少包含有红色子像素区、蓝色子像素区和绿色子像素区，每个子像素区都是由这些扫描线和这些资料线互相交错形成的区域所定义，每个像素区对应至少三条扫描线和一条资料线，这三条扫描线分别提供扫描信号给红蓝绿子像素区，而红蓝绿子像素区通过同一条资料线来接收像素资料；其中每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，而且每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。
在本发明之一实施例中，每个像素区内蓝色子像素区位于中间位置，红色子像素区位于上侧，而绿色子像素区位于下侧。
在本发明之一实施例中，每个像素区内蓝色子像素区位于中间位置，绿色子像素区位于上侧，而红色子像素区位于下侧。
 有益效果
在本发明中，每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。这样的排列方式可以进一步缩小立体影像显示器之显示面板的可视角度，从而提升显示之影像资讯的保密能力，防止信息泄露。
 附图说明
图1显示一种现有的立体显示器工作原理的示意图。
图2显示一种现有的显示面板的像素排列的示意图。
图3显示另一种现有的显示面板的像素排列的示意图。
图4显示一种现有的立体显示面板中结合三闸极式像素结构和相位延迟膜的示意图。
图5显示一种现有的采用1/4λ相位延迟膜片实现的3D显示系统的示意图。
图6显示一种现有的利用增加黑色矩阵的宽度来降低可视角度的示意图。
图7显示本发明的立体影像显示器的显示面板的示意图。
图8显示本发明中与该立体影像显示器配合使用的偏光眼镜的示意图。
图9显示图7中薄膜晶体管阵列和彩色滤光片基板上形成的像素结构以及相位延迟膜的示意图。
图10显示图7中薄膜晶体管阵列和彩色滤光片基板上形成的像素结构以及相位延迟膜的另一个例子的示意图。
 本发明的最佳实施方式
以下各实施例的说明是参考附加的图式，用以例示本发明可用以实施之特定实施例。本发明所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「顶」、「底」、「水平」、「垂直」等，仅是参考附加图式的方向。因此，使用的方向用语是用以说明及理解本发明，而非用以限制本发明。
图7显示本发明的立体影像显示器的显示面板的示意图，图8显示本发明中与该立体影像显示器配合使用的偏光眼镜的示意图。如图7所示，本发明之立体影像显示的显示面板包含一背光板21、一偏振片22、一薄膜晶体管阵列基板23、一液晶层24和一彩色滤光片基板25。液晶层24设置在薄膜晶体管阵列基板23和彩色滤光片基板25之间，彩色滤光片基板25可包含布建有红（R）、蓝（B）、绿（G）色块的滤波片阵列252、偏振片254以及玻璃载板256。如图8所示，偏光眼镜30是由左右偏振镜片33、34以及其上贴附的偏振膜片31、32所组成。
背光板21用于提供背光光源，如冷阴极管及发光二极体（LED）光源。偏振片22设置在显示面板后侧，而偏振片254设置在显示面板前侧，偏振片22和偏振片254用于将光线偏极化，当背光板21提供的光线经过偏振片22时会被偏极化，薄膜电晶体阵列基板52上设置的薄膜电晶体可控制液晶层54内之液晶分子的偏转进而改变光线偏极化的角度，而具有不同偏振方向的光线经过彩色滤光片基板56上的红蓝绿滤波片阵列252后进到偏光片254时，光线经过偏振片254后具有两个不同的偏振方向。在此可经由适当设计，使得要进入到观赏者左眼的影像具有一第一偏振方向，而要进入到观赏者右眼的影像具有一第二偏振方向，而且偏光眼镜30设计成左镜片只允许具第一偏振方向的左眼影像通过，右镜片只允许具第二偏振方向的右眼影像通过。依此方式，当观赏者戴上偏光眼镜30时，左眼只会看到显示器提供给左眼的影像，右眼只会看到显示器提供给右眼的影像，利用视差（parallax）原理，观赏者即能感知到三维的立体影像。
举例来说，偏振片22为一线偏振片，其光轴与水平方向成90°夹角，故只有偏振方向为垂直方向的光线能够通过垂直偏振片22，通过垂直偏振片22后的光线为垂直偏振光。而偏振片254为一相位延迟膜（film-type patterned retarder, FPR），其是由1/4λ膜和-1/4λ膜排列组成的，其沿着垂直方向呈交替排列，即一行（row）是1/4λ相位延迟膜，下一行是-1/4λ相位延迟膜，再下一行又是1/4λ相位延迟膜，以此类推（参见图9）。因此，来自垂直偏振片22的偏振光经过相位延迟膜254后会同时形成右旋圆偏振光和左旋圆偏振光。另一方面，与立体影像显示器搭配的偏光眼镜30中，对应左眼镜片的λ/4膜片31其光轴方向为45°，对应右眼镜片的λ/4膜片32其光轴方向为135°，而左右偏振镜片33、34的光轴方向皆与水平方向垂直。藉此，来自相位延迟膜254的左旋圆偏振光可以通过右眼镜片而进到观赏者的右眼，左旋圆偏振光因会被左眼镜片吸收而不会进到观赏者左眼，而来自相位延迟膜254的右旋圆偏振光可以通过左眼镜片而进到观赏者的右眼，右旋圆偏振光因会被右眼镜片吸收而不会进到观赏者右眼。
在一实施例中，相位延迟膜254可贴附在彩色滤光片基板25的玻璃载板256上，在接着形成滤波片阵列252，如图7所示。在另一实施例中，也可先在玻璃载板256上形成滤波片阵列252，再于其上形成相位延迟膜254。
图9显示图7中薄膜晶体管阵列和彩色滤光片基板上形成的像素结构以及相位延迟膜的示意图。如图9所示，薄膜晶体管阵列基板23上设置有多条扫描线231和多条资料线233，扫描线231用以提供扫描信号，而资料线233提供像素资料，扫面线231和资料线233的交错处设置有一晶体管235，用来控制像素资料的写入。薄膜晶体管阵列基板23上包含多个像素区，每个像素区237至少包含有红色子像素区、蓝色子像素区和绿色子像素区，每个子像素区237都是由这些扫描线231和这些资料线233互相交错形成的区域所定义。另一方面，在彩色滤光片基板25上对应薄膜晶体管阵列基板23的红蓝绿子像素区分别设置有红蓝绿滤波片，如图7所示的红、蓝、绿色块的滤波片阵列252。
图9所示的像素结构是一种三闸极式像素结构，在此结构中，每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，每个像素区对应至少三条扫描线231和一条资料线233，这三条扫描线分别提供扫描信号给红蓝绿子像素区，而红蓝绿子像素区通过同一条资料线233来接收像素资料。这种像素结构的优点在于整体来说可以减少资料线233的数目，源极驱动晶片的数目因此可以降低，从而节省成本。图9中的像素结构虽然会使得所需的扫描线231数目增加、闸极驱动晶片的数目增多，但是源极驱动晶片的成本相对较高，因此采用三闸极式的像素结构可以减少源极驱动晶片的数量，节省成本。
在本发明中，每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。在一实施例中，每个像素区内蓝色子像素区位于中间位置，红色子像素区位于上侧，而绿色子像素区位于下侧，如图9所示。在另一实施例中，每个像素区内蓝色子像素区位于中间位置，绿色子像素区位于上侧，而红色子像素区位于下侧，如图10所示。这样的排列方式可以进一步缩小立体影像显示器之显示面板的可视角度，从而提升显示之影像资讯的保密能力，防止信息泄露。这是因为绿色对人眼的刺激值最大，即人眼对绿色的感知最敏感，而红色次之，蓝色最小，因此本发明将每个像素区内的红色子像素区和绿色子像素区设置在上下两侧，这样可使得显示立体影像时，影像串扰（crosstalk）给人的感觉更加强烈，因而缩小了可视角度，从而进一步保护隐私。
综上所述，虽然本发明已以较佳实施例揭露如上，但该较佳实施例并非用以限制本发明，该领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。
 本发明的实施方式
工业实用性
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Claims (10)

  1. 一种立体影像显示器的显示面板，包含：
    一背光板，用于提供背光；
    一薄膜晶体管阵列基板，其上包含多个像素区，每个像素区至少包含有红色子像素区、蓝色子像素区和绿色子像素区，该薄膜晶体管阵列基板上设置有多条扫描线和多条资料线，每个子像素区都是由这些扫描线和这些资料线互相交错形成的区域所定义；
    一彩色滤光片基板，对应该薄膜晶体管阵列基板上的红蓝绿子像素区分别设置有红蓝绿滤波片；
    一垂直偏振片，设置于该薄膜晶体管阵列基板一侧，其光轴与水平方向垂直；以及
    一相位延迟膜，设置于该彩色滤光片基板一侧，其由1/4λ和-1/4λ相位延迟区块排列组成，该背光板发出的光线依序经过该垂直偏振片和该相位延迟膜后会形成左旋圆偏振光和右旋圆偏振光；
    其中每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，且其中每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。
  2. 根据权利要求1所述的立体影像显示器的显示面板，其中该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，红色子像素区位于上侧，而绿色子像素区位于下侧。
  3. 根据权利要求1所述的立体影像显示器的显示面板，其中该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，绿色子像素区位于上侧，而红色子像素区位于下侧。
  4. 一种立体影像显示器的显示面板，包含：
    一背光板，用于提供背光；
    一薄膜晶体管阵列基板，其上包含多个像素区，每个像素区至少包含有红色子像素区、蓝色子像素区和绿色子像素区，该薄膜晶体管阵列基板上设置有多条扫描线和多条资料线，每个子像素区都是由这些扫描线和这些资料线互相交错形成的区域所定义；
    一彩色滤光片基板，对应该薄膜晶体管阵列基板上的红蓝绿子像素区分别设置有红蓝绿滤波片；以及
    一第一偏振片和一第二偏振片，分别设置在该显示面板后侧及前侧，该背光板发出的光线经过该第一偏振片和该第二偏振片后具有两个不同的偏振方向；
    其中每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，且其中每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。
  5. 根据权利要求4所述的立体影像显示器的显示面板，其中该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，红色子像素区位于上侧，而绿色子像素区位于下侧。
  6. 根据权利要求4所述的立体影像显示器的显示面板，其中该薄膜晶体管阵列基板上每个像素区内蓝色子像素区位于中间位置，绿色子像素区位于上侧，而红色子像素区位于下侧。
  7. 根据权利要求4所述的立体影像显示器的显示面板，其中
    该第一偏振片为一垂直偏振片，其光轴与水平方向垂直；以及
    该第二偏振片为一相位延迟膜，其由1/4λ和-1/4λ相位延迟区块排列组成，该背光板发出的光线依序经过该垂直偏振片和该相位延迟膜后会形成左旋圆偏振光和右旋圆偏振光。
  8. 一种立体影像显示器的显示面板，该显示面板的后侧和前侧分别设置有一第一偏振片和一第二偏振片，该显示面板的背光依序经过该第一偏振片和该第二偏振片后具有两个不同的偏振方向，所述立体影像显示器的显示面板包含：
    多条扫描线和多条资料线；以及
    多个像素区，每个像素区至少包含有红色子像素区、蓝色子像素区和绿色子像素区，每个子像素区都是由这些扫描线和这些资料线互相交错形成的区域所定义，每个像素区对应至少三条扫描线和一条资料线，这三条扫描线分别提供扫描信号给红蓝绿子像素区，而红蓝绿子像素区通过同一条资料线来接收像素资料；
    其中每个像素区内的红蓝绿子像素区是沿着垂直方向并行排列，而且每个像素区内蓝色子像素区位于中间位置，而红色子像素区及绿色子像素区位于上下两侧。
  9. 根据权利要求8所述的立体影像显示器的显示面板，其中每个像素区内蓝色子像素区位于中间位置，红色子像素区位于上侧，而绿色子像素区位于下侧。
  10. 根据权利要求8所述的立体影像显示器的显示面板，其中每个像素区内蓝色子像素区位于中间位置，绿色子像素区位于上侧，而红色子像素区位于下侧。
PCT/CN2012/077288 2012-06-19 2012-06-21 立体影像显示器的显示面板 Ceased WO2013189054A1 (zh)

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