WO2015168967A1 - 侧边式曲面模组亮度均匀性改善方法 - Google Patents

侧边式曲面模组亮度均匀性改善方法 Download PDF

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Publication number
WO2015168967A1
WO2015168967A1 PCT/CN2014/078669 CN2014078669W WO2015168967A1 WO 2015168967 A1 WO2015168967 A1 WO 2015168967A1 CN 2014078669 W CN2014078669 W CN 2014078669W WO 2015168967 A1 WO2015168967 A1 WO 2015168967A1
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Prior art keywords
panel
grid
light guide
guide plate
curved
Prior art date
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Ceased
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PCT/CN2014/078669
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English (en)
French (fr)
Inventor
王将峰
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/378,385 priority Critical patent/US9684118B2/en
Publication of WO2015168967A1 publication Critical patent/WO2015168967A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • 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
    • G02F1/1336—Illuminating devices
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133611—Direct backlight including means for improving the brightness uniformity

Definitions

  • the invention relates to liquid crystal display technology, in particular to a method for improving brightness uniformity of a side curved module. Background technique
  • FIG. 1A is a schematic diagram of a prior art curved surface module, showing a dark zone: which exists at both ends of a curved module due to poor brightness uniformity
  • FIG. 1B is a prior art.
  • the surface module brightness distribution virtual map displays the brightness distribution of the surface module in the form of a luminance color map.
  • the curved module has dark ends and a bright center. Poor brightness uniformity reduces the taste of the module, causing the product to exceed the out spec.
  • FIG. 2 it is a schematic diagram of the principle of decreasing the uniformity of brightness of the prior art curved surface module.
  • the upper and lower glass substrates are partially misaligned, so that the black matrix (BM) on the upper glass substrate and the data line on the lower glass substrate are no longer facing each other, and the data lines are offset.
  • BM black matrix
  • Data lines offset from the black matrix will block some of the pixels, resulting in reduced panel transmittance and module brightness.
  • the degree of this offset is different at different parts of the panel, usually with a sharp offset at both ends and a slight center shift. In this way, the two ends of the module will be darker and the center will be brighter, resulting in a decrease in brightness uniformity.
  • a common method for solving this problem in the prior art is to start from the panel, such as increasing the BM width, total pitch compensation, and the like. But these methods require changing the mask, which requires more money. At the same time, the overall transmittance of the panel is lowered, resulting in a decrease in the overall brightness of the module. In order to increase the brightness of the module, it is also necessary to design a backlight (Backlight) at a higher cost.
  • Backlight backlight
  • the curved module generally uses a side-lit backlight module to provide a display light source to the liquid crystal panel, so that the liquid crystal panel displays an image.
  • the side backlight module mainly includes a light guide plate and a light source.
  • the function of the light guide plate is to guide the scattering direction of the light, to improve the brightness of the panel, and to ensure the uniformity of the brightness of the panel, and the excellent quality of the light guide plate has a great influence on the backlight board.
  • the light guide plate generally has a very smooth surface so that most of the internal light will be totally totally reflected on its flat surface and will not be emitted outside the light guide.
  • the bottom surface of the light guide plate is generally provided with a dot structure arranged in a mesh shape.
  • the dot structure may be a microlens, and the shape of the microlens may be a spherical shape, a conical shape, an ellipsoidal shape or a tetrahedral pyramidal prism shape.
  • a dot structure printed on the bottom surface of the light guide plate by printing which is a white ink dot having a high diffuse reflectance.
  • the object of the present invention is to provide a method for improving brightness uniformity of a side-surface curved module, which improves the brightness uniformity of the curved module and improves the taste of the mold without increasing the design cost of the product.
  • the present invention provides a method for improving luminance uniformity of a side-surface curved module, which includes:
  • Step 1 Divide the surface panel display into multiple panel grids, and mark the multiple grid sequences as panel grids according to the serial number 1 ⁇ ! ! , n is a natural number;
  • Step 2 dividing the light guide plate directly under the display area of the curved panel into a corresponding plurality of light guide plate grids, and the dot density of each light guide plate grid is represented as Pn;
  • Step 3 measuring the transmittance of each panel grid, the penetration rate of each panel grid is expressed as tn;
  • Step 4 Taking the transmittance tc of the panel grid c adjacent to the center of the curved panel display area as a reference, c is a natural number smaller than n, and the dot density of the light guide plate grid c corresponding to the panel grid c For Pc, the dot density ⁇ of the light guide grid ⁇ is set between Pcx0.25xtc/tn ⁇ Pcx4xtc/tn.
  • step 4 the dot density Pn of the light guide grid n is set between Pcx0.6xtc/tn ⁇ Pcxl .5xtc/tn.
  • step 3 the sampling points of the respective panel grids are measured for the penetration rate, and the penetration rate of each sampling point represents the transmittance of the panel grid of the sampling point.
  • step 1 the curved panel display is divided into 81 panel grids according to the 9x9 array; in step 4, the adjacent central panel grid c is the 41th panel grid.
  • the length of the straight line of the curved panel display area is represented by W
  • the straight line width of the curved panel display area is represented by H
  • the length of the panel mesh of the four corners of the 9x9 array panel grid is 3W/20 and the width is 3H/20
  • the remaining The panel grid has a length of W/10 and a width of H/10.
  • sampling points have a length direction spacing of W/10 and a width direction spacing of H/10.
  • step 1 the curved panel display is divided into 100 panel grids according to a 10 ⁇ 10 array.
  • step 1 the curved panel display is divided into 121 panel grids according to the 11 x 11 array.
  • the invention also provides a method for improving brightness uniformity of a side-surface curved module, comprising: Step 1. Dividing a curved panel display into a plurality of panel grids, and marking the plurality of grid sequences as panel grids according to serial numbers 1 ⁇ ! ! , n is a natural number;
  • Step 2 dividing the light guide plate directly under the display area of the curved panel into a corresponding plurality of light guide plate grids, and the dot density of each light guide plate grid is represented as Pn;
  • Step 3 measuring the transmittance of each panel grid, the penetration rate of each panel grid is expressed as tn;
  • Step 4 taking the transmittance tc of the panel grid c adjacent to the center of the curved panel display area as a reference, c is a natural number smaller than n, and the dot density of the light guide plate grid c corresponding to the panel grid c is Pc, then Setting the dot density Pn of the light guide grid n between Pcx0.25xtc/tn ⁇ Pcx4xtc/tn;
  • step 4 the dot density Pn of the light guide grid n is set between Pcx0.6xtc/tn ⁇ Pcx l.5xtc/tn.
  • step 3 the sampling points of the respective panel grids are measured for the penetration rate, and the penetration rate of each sampling point represents the transmittance of the panel grid of the sampling point.
  • step 1 the curved panel display is divided into 81 panel grids according to the 9x9 array; in step 4, the adjacent central panel grid c is the 41th panel grid.
  • the length of the straight line of the curved panel display area is represented by W
  • the straight line width of the curved panel display area is represented by H.
  • the length of the panel mesh of the corner of the 9x9 array panel grid is 3W/20
  • the width is 3H/20
  • the length of the grid is W/10 and the width is H/10.
  • sampling points have a lengthwise spacing of W/10 and a widthwise spacing of H/10.
  • the dark group of the curved module can be effectively eliminated, the brightness uniformity can be improved, the product quality and the customer acceptability can be improved without increasing the product design cost.
  • FIG. 1A is a schematic view of a prior art curved surface module
  • 1B is a virtual diagram of brightness distribution of a prior art curved surface module
  • FIG. 2 is a schematic diagram showing the principle of lowering the uniformity of brightness of the curved surface module of the prior art
  • FIG. 3 is a flow chart of a method for improving brightness uniformity of a side-surface curved module according to the present invention
  • FIG. 4A is a schematic view showing a specification of a curved surface panel according to a preferred embodiment of the present invention
  • 4B is a schematic diagram of a grid division of a curved panel according to a preferred embodiment of the present invention
  • 4C is a schematic diagram of dividing a grid of a light guide plate according to a preferred embodiment of the present invention
  • FIG. 5A is a schematic diagram showing a distribution of transmittance of a panel grid according to a preferred embodiment of the present invention
  • FIG. 5B is a schematic diagram showing a distribution of dot density of a grid of a light guide plate according to a preferred embodiment of the present invention
  • FIG. 7 is a schematic diagram of a design of a light guide plate dot according to a preferred embodiment of the present invention
  • FIG. 8 is a virtual diagram of brightness distribution of a curved surface module improved by applying the method of the present invention according to a preferred embodiment of the present invention. detailed description
  • FIG. 3 it is a flow chart of a method for improving brightness uniformity of a side-surface curved module of the present invention.
  • the method mainly includes:
  • Step 1 Divide the surface panel display into multiple panel grids, and mark the multiple grid sequences as panel grids according to the serial number 1 ⁇ ! ! , n is a natural number;
  • Step 2 dividing the light guide plate directly under the display area of the curved panel into a corresponding plurality of light guide plate grids, and the dot density of each light guide plate grid is represented as Pn;
  • Step 3 Measure the penetration rate of each panel grid, and the penetration rate of each panel grid is respectively represented as tn; the penetration rate of the sampling point may be used to represent the transmittance of the panel grid of the sampling point, You can take one point for each panel grid, or you can take multiple points for averaging;
  • Step 4 taking the transmittance tc of the panel grid c adjacent to the center of the curved panel display area as a reference, c is a natural number smaller than n, and the dot density of the light guide plate grid c corresponding to the panel grid c is Pc, then The dot density Pn of the light guide grid n is set between Pcx0.25xtc/tn ⁇ Pcx4xtc/tn.
  • step 1 to divide the display of the surface panel into 81 points and 81 grids, one for each grid.
  • FIG. 4A it is a specification of a curved panel in a preferred embodiment of the present invention, where W is the linear length of the curved panel display area, and H is the linear width of the curved panel display area.
  • FIG. 4B it is a schematic diagram of a grid division of a curved panel in a preferred embodiment of the present invention.
  • the panel mesh of the four corners has a length of 3W/20 and a width of 3H/20
  • the remaining panel grid has a length of W/10 and a width of H/10.
  • the distance between the sampling points in the longitudinal direction is W/10
  • the pitch in the width direction is H/10.
  • FIG. 4C it is a schematic diagram of dividing a grid of a light guide plate according to a preferred embodiment of the present invention.
  • the light guide plate (LGP) area directly below the curved panel display area is also divided into 81 grids in the same way.
  • LGP grid corresponding to it (corresponding to the same serial number).
  • the point penetration rate (Tr.) distribution of the curved surface panel 81 is measured, and the penetration rate of each point can approximate the transmittance of the grid where the point is located.
  • FIG. 5A is a schematic diagram showing a transmittance distribution of a panel grid according to a preferred embodiment of the present invention, showing an 81-point penetration rate distribution
  • FIG. 6 is a panel network according to a preferred embodiment of the present invention.
  • a schematic diagram of the measurement results of the penetration rate of the grid shows the specific penetration rate measured at each point.
  • FIG. 5B it is a schematic diagram of dot density distribution of a light guide plate grid according to a preferred embodiment of the present invention.
  • the penetration point of the center point of the panel 81 point (point 41 filled with diagonal lines in Fig. 4B) is the reference. If the penetration rate at the center point 41 is t41, the density of the dots in the LGP grid directly below (unit The number of dots in the area is P41.
  • the penetration rate at another point in the 81-point is tn
  • the dot density in the LGP grid just below the point can be set between P41 x 0.6xt41/tn ⁇ P41 l.5xt41/tn
  • the specific value is related to the dot size, the grid position, and the like, as shown in FIG. 5B.
  • FIG. 7 which is a schematic diagram of a design of a light guide plate dot in a preferred embodiment of the present invention, a dot density design drawing obtained in step 4 in the preferred embodiment is illustrated.
  • the LGP dot is not specially designed as in the prior art, WA usually has a thinner dot on the light entrance side, the dot density is about 0.25-0.8 times of the center, and the high beam side dot is dense, and the dot density is usually Between 1.25 and 4 times the center, the dot density at other locations is between the two (0.25-0.8 ⁇ 1.25-4).
  • special design is made at the LGP network. Before, it is assumed that the brightness of the backlight is the same, and all are lOOOOnits. After the curved panel is used as a module, the brightness of the module will be very uneven due to the different penetration rates of the different positions of the panel. Generally, the center penetration of the panel is larger than the edge.
  • LGP edge dot encryption is required.
  • the transmittance of a certain area (mesh) of the panel is tn
  • the transmittance of the central area is t41
  • the density of the dot density of the area is t41/tn times
  • the density of the original dot is central. 0.25-4 times (different positions, most areas will be between 0.6-1.5 times in the center)
  • the dot density of this area is 0.25xt41/tn-4xt41/tn in the center, preferably 0.6> ⁇ t41/tn - 1.5xt41/tn.
  • FIG. 8 which is a modified surface of the present invention, which is improved by the method of the present invention.
  • the module brightness distribution virtual map shows the brightness distribution of the surface module in the form of a luminance color map. Compared with FIG. 1B, it can be seen that the brightness uniformity of the improved back surface module is improved.
  • the panel display area and the corresponding LGP area are divided into 81 areas.
  • the selection of the central panel grid as a reference can also be determined as needed, either as a center or as a surrounding grid.
  • the present invention is directed to a side-surface curved module, which adopts a special design of the LGP mesh to improve the brightness uniformity of the curved module and improve the taste.
  • the LGP mesh is specially designed according to the panel transmittance distribution.
  • the LGP dot is denser, and the LGP dot is thinner in the part with higher penetration rate.
  • the invention can effectively eliminate the dark group of the curved module, improve the brightness uniformity, improve the product taste and the customer acceptability.

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Abstract

一种侧边式曲面模组亮度均匀性改善方法，包括：步骤1、将曲面面板显示区分成多个面板网格，按照序号将多个网格顺序标记为面板网格1～n，n为自然数；步骤2、将该曲面面板显示区正下方的导光板分成对应的多个导光板网格，各个导光板网格的网点密度分别表示为Pn；步骤3、量测各个面板网格的穿透率，各个面板网格的穿透率分别表示为tn；步骤4、以该曲面面板显示区邻近中央的面板网格c的穿透率tc为基准，c为小于n的自然数，该面板网格c对应的导光板网格c的网点密度为Pc，则将导光板网格n的网点密度Pn设置于Pc×0.25×tc/tn～Pc×4×tc/tn之间，从而在不提高产品设计成本的情况下，可以有效消除曲面模组的暗团，改善亮度均匀性。

Description

侧边式曲面模组亮度均匀性改善方法 技术领域
本发明涉及液晶显示技术，尤其涉及一种侧边式曲面模组亮度均匀性 改善方法。 背景技术
近来，曲面模组（ module )因其与众不同的外观而成为一个热门的话 题。 曲面模组主要由曲面面板和相应的背光模组组装而成。 然而，曲面模 组在设计中会遇到一些特殊问题，其中一个是亮度均匀性（ luminance uniformity )不佳。 如图 1A及 1B所示，图 1A为现有技术曲面模组的示意 图，显示了由于亮度均匀性不佳曲面模组两端所存在的暗团（ dark zone：) ,图 IB为现有技术曲面模组亮度分布虚拟图，以辉度色彩图形式 显示了曲面模组的亮度分布，曲面模组两端较暗，中央较亮。 亮度均匀性 不佳会降低模组品味，导致产品超出标准规格 ( out spec )。
参见图 2 ,其为现有技术曲面模组亮度均齐度下降的原理示意图。 面 板（ panel )弯曲时，上下玻璃基板会局部错位，导致上玻璃基板上的黑色 矩阵（ BM )与下玻璃基板上的数据线（ Data line )不再正对，数据线偏移 出黑色矩阵。 偏移出黑色矩阵的数据线会遮住部分像素（ pixel ) ,导致面 板穿透率 ( transmittance )和模组亮度下降。 在面板不同部位，这种偏移的 程度不一样，通常在两端偏移严重，中央偏移轻微。 这样模组两端会较 暗，中央会较亮，导致亮度均齐度下降。
现有技术中解决这一问题常见的方法是从面板着手，如加大 BM宽 度、 总节距（ total pitch )补偿等。 但这些方法需要更改光罩，这就需要投 入更多的资金。 同时会使面板整体穿透率下降，导致模组整体亮度降低。 为提高模组亮度，也需要花费更多的成本设计背光 ( Backlight )。
曲面模组一般采用侧边式背光模组提供显示光源给液晶面板，以使液 晶面板显示图像。 侧边式背光模组主要包括导光板及光源。 导光板的作用 在于引导光的散射方向，用来提高面板的亮度，并确保面板亮度的均匀 性，导光板的优良与否对背光板影响很大。 导光板一般表面非常光滑平 整，以致于大部分内部光线会在其平整表面上规则的全反射，而不会射出 到导光板外部。 导光板的底面一般设有排列成网状的网点（ dot )结构，在 导光板设有网点的位置上，光线不再规则的全反射而是会向导光板上方射 出。 控制每个位置网点的密度就可以控制导光板在这个位置射出光线的多 少。 精密设计的导光板网点可以让两侧入射的光线均匀的铺散在整个平面 上。 网点结构可以是微透镜，微透镜的形状可以是圆球形，圆锥形，椭球 形或者是四面体角锥棱镜形状等。 还存在通过印刷方式印制在导光板底面 上的网点结构，这种网点是具有很高漫反射率的白色油墨点。 发明内容
因此，本发明的目的在于提供一种侧边式曲面模组亮度均匀性改善方 法，在不提高产品设计成本的情况下，提高曲面模组亮度均匀性，改善模 组品味。
为实现上述目的，本发明提供了一种侧边式曲面模组亮度均匀性改善 方法，其包括：
步骤 1、 将曲面面板显示区分成多个面板网格，按照序号将所述多个 网格顺序标记为面板网格 1〜！！， n为自然数；
步骤 2、 将该曲面面板显示区正下方的导光板分成对应的多个导光板 网格，各个导光板网格的网点密度分别表示为 Pn；
步骤 3、 量测所述各个面板网格的穿透率，各个面板网格的穿透率分 别表示为 tn；
步骤 4、 以该曲面面板显示区邻近中央的面板网格 c的穿透率 tc为基 准， c为小于 n的自然数，该面板网格 c对应的导光板网格 c的网点密度 为 Pc ,则将导光板网格 η的网点密度 Ρη设置于 Pcx0.25xtc/tn~ Pcx4xtc/tn 之间。
其中，步骤 4中，导光板网格 n的网点密度 Pn设置于 Pcx0.6xtc/tn〜 Pcxl .5xtc/tn之间。
其中，步骤 3 中，对所述各个面板网格的取样点量测穿透率，以各取 样点的穿透率代表该取样点所在面板网格的穿透率。
其中，步骤 1中，按照 9x9阵列将该曲面面板显示区分成 81个面板 网格；步骤 4中，所述邻近中央的面板网格 c为第 41个面板网格。
其中，以 W表示该曲面面板显示区直线长度，以 H表示该曲面面板 显示区直线宽度，则该 9x9 阵列面板网格四角的面板网格的长度为 3W/20、 宽度为 3H/20,剩余面板网格的长度为 W/10、 宽度为 H/10。
其中，所述各取样点的长度方向间距为 W/10 ,宽度方向间距为 H/10。
其中，步骤 1中，按照 10x 10阵列将该曲面面板显示区分成 100个面 板网格。
其中，步骤 1中，按照 11 x 11阵列将该曲面面板显示区分成 121个面 板网格。 本发明还提供一种侧边式曲面模组亮度均匀性改善方法，包括： 步骤 1、 将曲面面板显示区分成多个面板网格，按照序号将所述多个 网格顺序标记为面板网格 1〜！！， n为自然数；
步骤 2、 将该曲面面板显示区正下方的导光板分成对应的多个导光板 网格，各个导光板网格的网点密度分别表示为 Pn；
步骤 3、 量测所述各个面板网格的穿透率，各个面板网格的穿透率分 别表示为 tn；
步骤 4、 以该曲面面板显示区邻近中央的面板网格 c的穿透率 tc为基 准， c为小于 n的自然数，该面板网格 c对应的导光板网格 c的网点密度 为 Pc ,则将导光板网格 n的网点密度 Pn设置于 Pcx0.25xtc/tn~Pcx4xtc/tn 之间；
其中 ， 步骤 4 中 ， 导光板网格 n 的网点密度 Pn 设置于 Pcx0.6xtc/tn〜Pcx l.5xtc/tn之间。
步骤 3 中，对所述各个面板网格的取样点量测穿透率，以各取样点的 穿透率代表该取样点所在面板网格的穿透率。
步骤 1中，按照 9x9阵列将该曲面面板显示区分成 81个面板网格； 步骤 4中，所述邻近中央的面板网格 c为第 41个面板网格。 以 W表示该曲面面板显示区直线长度，以 H表示该曲面面板显示区 直线宽度，则该 9x9阵列面板网格四角的面板网格的长度为 3W/20、 宽度 为 3H/20,剩余面板网格的长度为 W/10、 宽度为 H/10。
所述各取样点的长度方向间距为 W/10 ,宽度方向间距为 H/10。
通过本发明侧边式曲面模组亮度均匀性改善方法，在不提高产品设计 成本的情况下，可以有效消除曲面模组的暗团，改善亮度均匀性，提高产 品品位和客户可接受度。 附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明 的技术方案及其他有益效果显而易见。
附图中，
图 1A为现有技术曲面模组的示意图；
图 1B为现有技术曲面模组亮度分布虚拟图；
图 2为现有技术曲面模组亮度均齐度下降的原理示意图；
图 3为本发明侧边式曲面模组亮度均匀性改善方法的流程图； 图 4A为本发明一较佳实施例中曲面面板的规格示意图；
图 4B为本发明一较佳实施例中曲面面板的面板网格划分示意图； 图 4C为本发明一较佳实施例中导光板网格的划分示意图；
图 5A为本发明一较佳实施例中面板网格的穿透率分布示意图； 图 5B为本发明一较佳实施例中导光板网格的网点密度分布示意图； 图 6为本发明一较佳实施例中面板网格的穿透率量测结果示意图； 图 7为本发明一较佳实施例中导光板网点设计示意图；
图 8为本发明一较佳实施例中应用本发明方法改善后的曲面模组亮度 分布虚拟图。 具体实施方式
参见图 3 ,其为本发明侧边式曲面模组亮度均匀性改善方法的流程 图。 该方法主要包括：
步骤 1、 将曲面面板显示区分成多个面板网格，按照序号将所述多个 网格顺序标记为面板网格 1〜！！， n为自然数；
步骤 2、 将该曲面面板显示区正下方的导光板分成对应的多个导光板 网格，各个导光板网格的网点密度分别表示为 Pn；
步骤 3、 量测所述各个面板网格的穿透率，各个面板网格的穿透率分 别表示为 tn；可以用取样点的穿透率代表该取样点所在面板网格的穿透 率，对每个面板网格可以取一个点，也可以取多个点进行平均； 步骤 4、 以该曲面面板显示区邻近中央的面板网格 c的穿透率 tc为基 准， c为小于 n的自然数，该面板网格 c对应的导光板网格 c的网点密度 为 Pc ,则将导光板网格 n的网点密度 Pn设置于 Pcx0.25xtc/tn~ Pcx4xtc/tn 之间。 Pn优选设置于 Pcx0.6xtc/tn〜Pcx l.5xtc/tn之间，例如 Pn=Pcxtc/tn。
下面结合图 4A至图 8对本发明侧边式曲面模组亮度均匀性改善方法 加以具体说明。
按照步骤 1 ,把曲面面板的显示区分成 81点和 81个网格，每点对应 一个网格。 如图 4A所示，其为本发明一较佳实施例中曲面面板的规格示 意图，其中 W为曲面面板显示区直线长度， H为曲面面板显示区直线宽 度。 如图 4B所示，其为本发明一较佳实施例中曲面面板的面板网格划分 示意图。 其中，四角的面板网格的长度为 3W/20、 宽度为 3H/20 ,剩余面 板网格的长度为 W/10、 宽度为 H/10。 各取样点的长度方向间距为 W/10 , 宽度方向间距为 H/10。
如图 4C所示，其为本发明一较佳实施例中导光板网格的划分示意 图。 按照步骤 2 ,在曲面面板显示区正下方的导光板（ LGP )区域，也按 同样的方式划分成 81 个网格。 这样，每一个面板网格正下方，就有一个 LGP网格与之对应 (序号相同的相对应 )。 按照步骤 3 ,量测曲面面板 81点穿透率 (Tr.)分布，每点的穿透率可近 似代表该点所在网格的穿透率。 参见图 5A及图 6 ,图 5A为本发明一较佳 实施例中面板网格的穿透率分布示意图，显示了 81 点穿透率分布，图 6 为本发明一较佳实施例中面板网格的穿透率量测结果示意图，显示了各点 测得的具体穿透率。
如图 5B所示，其为本发明一较佳实施例中导光板网格的网点密度分 布示意图。 按照步骤 4 ,以面板 81 点的中央点（图 4B 中斜线填充的点 41 )穿透率为基准，若中央点 41处穿透率为 t41,其正下方 LGP网格内网 点密度 (单位面积内的网点数)为 P41。 panel 81点中另外某一点 (假定第 n 个点）处穿透率是 tn,那么该点正下方 LGP 网格内网点密度可设置在 P41 x0.6xt41/tn~ P41 l.5xt41/tn之间，具体值与网点大小、 网格位置等相 关，如图 5B所示。 参见图 7 ,其为本发明一较佳实施例中导光板网点设 计示意图，绘示了该较佳实施例中经过步骤 4得出的网点密度设计图。
进一步解释如下：若 LGP网点像现有技术一样没有做特殊设计， WA 通常入光侧网点较稀，网点密度大概为中央的 0.25-0.8倍之间，远光侧网 点较密，网点密度通常为中央的 1.25-4倍之间，其他位置的网点密度则介 于两者之间（ 0.25-0.8 ~ 1.25-4 )。 为了方便说明，在 LGP网点做特殊设计 前，假定背光不同点亮度都是一样的，都为 lOOOOnits (尼特)。 加上曲面面 板组成模组后，因面板不同位置穿透率不一样，模组亮度会很不均匀。 通 常面板中央穿透率大于边缘，如图 5A, t41 会比 tl 大，假定 t41=4.2%, tl=3.6%,那么模组中央区域 (图 5A中 t41所在处，也即图 4C网格 41)亮度 =10000xt41=420nitso 而模组边缘区域（图 5A中 tl所在处，也即图 4C网 格 1 )亮度 =10000xtl=360nits ,这样边缘就比中央暗了约 15%。
为了减小亮度差异，需要对 LGP边缘网点加密。 在边缘 tl 所在区 域，网点密度需要变为原先的 t41/tl=4.2%/3.6%=1.167倍，即为中央网点 密度的 (0.25-0.8)xt41/tl=(0.25-0.8)xl.l67倍，那么理想情况下，该区域的 模组亮度也提高为原来的 1.167倍，即 360x1.167=420nits ,这就与中央亮 度一样。
综上所述，若面板某区域 (网格)的穿透率为 tn, 中央区域穿透率为 t41 , S么该区域网点密度应变为原来的 t41/tn倍，而原来网点密度为中央 的 0.25-4倍 (不同位置不一样，大部分区域会在中央的 0.6-1.5倍之间），所 以该区域的网点密度为中央的 0.25xt41/tn-4xt41/tn, 优选 0.6><t41/tn- 1.5xt41/tn。
参见图 8 ,其为本发明一较佳实施例中应用本发明方法改善后的曲面 模组亮度分布虚拟图，以辉度色彩图形式显示了曲面模组的亮度分布，与 图 1B相比较可得知改善后曲面模组亮度均匀性得到提高。
上述技术方案中，面板显示区和对应 LGP区域分为 81区。 本领域技 术人员可以理解，根据精确度需要，也可分为其他数量的区域，如 10x10=100 区， 11 x 11=121 区等。 作为基准的中央的面板网格的选取也可 根据需要确定，可以是正中心也可以是周围的网格。
综上所述，本发明针对侧边式曲面模组，采用 LGP网点特殊设计来改 善曲面模组亮度均匀性，改善品味。 通过量测曲面面板的穿透率分布，根 据面板穿透率分布，对 LGP 网点进行特殊设计。 在穿透率较低的部位， LGP网点较密，在穿透率较高的部位， LGP网点较稀。 通过本发明可以有 效消除曲面模组的暗团，改善亮度均匀性，提高产品品位和客户可接受 度。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术 方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形 都应属于本发明后附的权利要求的保护范围。

Claims

杈 利 要 求
1、 一种侧边式曲面模组亮度均匀性改善方法，包括：
步骤 1、 将曲面面板显示区分成多个面板网格，按照序号将所述多个 网格顺序标记为面板网格 1〜！！， n为自然数；
步骤 2、 将该曲面面板显示区正下方的导光板分成对应的多个导光板 网格，各个导光板网格的网点密度分别表示为 Pn；
步骤 3、 量测所述各个面板网格的穿透率，各个面板网格的穿透率分 别表示为 tn；
步骤 4、 以该曲面面板显示区邻近中央的面板网格 c的穿透率 tc为基 准， c为小于 n的自然数，该面板网格 c对应的导光板网格 c的网点密度 为 Pc ,则将导光板网格 n的网点密度 Pn设置于 Pcx0.25xtc/tn~Pcx4xtc/tn 之间。
2、 如权利要求 1 所述的侧边式曲面模组亮度均匀性改善方法，其 中 ， 步骤 4 中 ， 导光板网格 n 的网点密度 Pn 设置于 Pcx0.6xtc/tn〜Pcx l.5xtc/tn之间。
3、 如权利要求 1 所述的侧边式曲面模组亮度均匀性改善方法，其 中，步骤 3 中，对所述各个面板网格的取样点量测穿透率，以各取样点的 穿透率代表该取样点所在面板网格的穿透率。
4、 如权利要求 3 所述的侧边式曲面模组亮度均匀性改善方法，其 中，步骤 1中，按照 9x9阵列将该曲面面板显示区分成 81个面板网格； 步骤 4中，所述邻近中央的面板网格 c为第 41个面板网格。
5、 如权利要求 4所述的侧边式曲面模组亮度均匀性改善方法，其 中，以 W表示该曲面面板显示区直线长度，以 H表示该曲面面板显示区 直线宽度，则该 9x9阵列面板网格四角的面板网格的长度为 3W/20、 宽度 为 3H/20,剩余面板网格的长度为 W/10、 宽度为 H/10。
6、 如权利要求 5 所述的侧边式曲面模组亮度均匀性改善方法，其 中，所述各取样点的长度方向间距为 W/10 ,宽度方向间距为 H/10。
7、 如权利要求 1 所述的侧边式曲面模组亮度均匀性改善方法，其 中，步骤 1 中，按照 10x 10阵列将该曲面面板显示区分成 100个面板网 格。
8、 如权利要求 1 所述的侧边式曲面模组亮度均匀性改善方法，其 中，步骤 1 中，按照 11 x 11 阵列将该曲面面板显示区分成 121 个面板网 格。
9、 一种侧边式曲面模组亮度均匀性改善方法，包括： 步骤 1、 将曲面面板显示区分成多个面板网格，按照序号将所述多个 网格顺序标记为面板网格 1〜！！， n为自然数；
步骤 2、 将该曲面面板显示区正下方的导光板分成对应的多个导光板 网格，各个导光板网格的网点密度分别表示为 Pn；
步骤 3、 量测所述各个面板网格的穿透率，各个面板网格的穿透率分 别表示为 tn；
步骤 4、 以该曲面面板显示区邻近中央的面板网格 c的穿透率 tc为基 准， c为小于 n的自然数，该面板网格 c对应的导光板网格 c的网点密度 为 Pc ,则将导光板网格 n的网点密度 Pn设置于 Pcx0.25xtc/tn~Pcx4xtc/tn 之间；
其中 ， 步骤 4 中 ， 导光板网格 n 的网点密度 Pn 设置于 Pcx0.6xtc/tn〜Pcx l.5xtc/tn之间。
10、 如权利要求 9所述的侧边式曲面模组亮度均匀性改善方法，其 中，步骤 3 中，对所述各个面板网格的取样点量测穿透率，以各取样点的 穿透率代表该取样点所在面板网格的穿透率。
11、 如权利要求 10所述的侧边式曲面模组亮度均匀性改善方法，其 中，步骤 1中，按照 9x9阵列将该曲面面板显示区分成 81个面板网格； 步骤 4中，所述邻近中央的面板网格 c为第 41个面板网格。
12、 如权利要求 11 所述的侧边式曲面模组亮度均匀性改善方法，其 中，以 W表示该曲面面板显示区直线长度，以 Η表示该曲面面板显示区 直线宽度，则该 9x9阵列面板网格四角的面板网格的长度为 3W/20、 宽度 为 3H/20,剩余面板网格的长度为 W/10、 宽度为 H/10。
13、 如权利要求 12所述的侧边式曲面模组亮度均匀性改善方法，其 中，所述各取样点的长度方向间距为 W/10 ,宽度方向间距为 H/10。
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CN106125394B (zh) * 2016-09-07 2022-08-09 京东方科技集团股份有限公司 一种虚拟曲面显示面板、显示装置及显示方法
KR101796497B1 (ko) * 2016-09-12 2017-11-14 (주)코텍 도광판 패턴 설계 장치와 방법
CN111596763B (zh) 2020-05-15 2023-12-26 京东方科技集团股份有限公司 虚拟现实设备的控制方法及装置
CN113820885B (zh) 2020-06-18 2022-11-04 京东方科技集团股份有限公司 一种曲面背光模组及显示装置

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