WO2018048107A1 - 도광판 패턴 설계 장치와 방법 - Google Patents
도광판 패턴 설계 장치와 방법 Download PDFInfo
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- WO2018048107A1 WO2018048107A1 PCT/KR2017/008638 KR2017008638W WO2018048107A1 WO 2018048107 A1 WO2018048107 A1 WO 2018048107A1 KR 2017008638 W KR2017008638 W KR 2017008638W WO 2018048107 A1 WO2018048107 A1 WO 2018048107A1
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- mura
- shape
- density
- image
- dot pattern
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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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0242—Testing optical properties by measuring geometrical properties or aberrations
- G01M11/0257—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested
- G01M11/0264—Testing optical properties by measuring geometrical properties or aberrations by analyzing the image formed by the object to be tested by using targets or reference patterns
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- 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
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- 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
- G02B6/0065—Manufacturing aspects; Material aspects
-
- 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
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
-
- 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
Definitions
- the present invention relates to a light guide plate pattern design apparatus and a method, and more particularly, based on the shape of a cell mura generation region measured by a liquid crystal display module (LCM), a dot of a light guide plate (LGP).
- LCM liquid crystal display module
- Dot relates to a light guide plate pattern design device and method that can improve the cell mura by designing the density.
- the performance of the backlight in the liquid crystal display module is mostly due to the difference in the performance of the light guide plate (LGP). Design is very important.
- the conventional light guide plate design is to be applied to a flat panel type display device, the cell mura does not occur when applied to the flat display device (see Fig. 1 (a)), but the curved surface ( Curved Panel Type) When applied to a display device as it is, there is a problem that Cell Mura (Cell Mura or Cell Dark Mura) occurs without uniform illumination (see FIG. 1B).
- Cell Mura Cell Mura or Cell Dark Mura
- FIG. 1 is an exemplary view illustrating a reason why a cell mura occurs when a flat panel display implements a device and a curved display device using a liquid crystal display module (LCM).
- LCD liquid crystal display module
- the conventional curved display device is implemented using an OLED panel.
- the curved display device is implemented using a liquid crystal display module (LCM: BLU, LCD Module)
- LCD liquid crystal display module
- a curvature area in which curvature is deepened is increased.
- Cell mura Cell Mura or Cell Dark Mura
- Cell Stress occurs (see FIG. 1B).
- the present invention was created to solve the above problems, and is based on the shape of the cell mura generation region measured by the liquid crystal display module (LCM). It is an object of the present invention to provide a light guide plate pattern design apparatus and method that can improve cell mura by designing density.
- LCD liquid crystal display module
- the camera unit for photographing the liquid crystal display module mounted on the curved display device;
- a mura position detector detecting a mura position based on image information and luminance information photographed by the camera unit;
- Mura shape detection unit for detecting the shape of Mura based on the image information and the luminance information photographed by the camera unit;
- a dot pattern density adjusting unit configured to adjust the density of the dot pattern of the light guide plate in a shape for removing the mura in response to the shape of the mura generated in the liquid crystal display module; And generating a dot pattern of the entire light guide plate to which the adjusted dot pattern density is applied when the dot pattern density is adjusted to a predetermined shape at a position where the mura generated in the liquid crystal display module can be removed when the curved display device is manufactured. It characterized in that it comprises a; dot pattern generation unit.
- the camera unit characterized in that it comprises a sensor for image capture and a sensor for brightness detection.
- Mura position compensation unit for compensating for the difference between the position of the mura on the photographed image and the actual mura occurs in the liquid crystal display module; characterized in that it further comprises.
- the Mura position compensation unit reflects the curvature information of the curved display device to the photographed image, and virtually generates a rectangular image formed only in a straight line without a curve on four sides, and generates the virtual rectangular image.
- the compensated Mura position in the virtual rectangular image is calculated by reflecting the compensation value applied to generate the Mura position value detected on the image.
- the Mura shape detection unit by applying a spline smoothing technique to the detected Mura shape to approximate the boundary line for irregularly appearing point areas near the Mura boundary to specify the overall shape of the Mura Characterized in that.
- the Mura shape compensation unit for compensating for the difference between the Mura shape on the photographed image and the actual Mura shape generated in the LCD module.
- the Mura shape compensation unit reflects the curvature information of the curved display device to the photographed image, and virtually generates a rectangular image formed only in a straight line without curves on four sides, and generates the virtual rectangular image.
- the compensated Mura shape in the virtual rectangular image is calculated by reflecting the compensation value applied to generate the Mura shape detected on the image.
- the dot pattern density adjusting unit is a shape that follows the shape of the mura, and increases the density of the dot pattern more than the average density around, or polygons or circles covering the entire shape of the mura or
- the elliptical shape is characterized in that to increase the density of the dot pattern more than the average density of the surroundings.
- the dot pattern density adjusting unit adjusts the density of the dot pattern with reference to a luminance, a light amount graph, or a lookup table according to a preset density.
- a light guide plate pattern design method including photographing a liquid crystal display module mounted on a curved display device of a camera unit; Detecting, by the controller, the position of the mura and the shape of the mura based on the image information and the luminance information photographed by the camera unit; Adjusting, by the controller, the density of the dot pattern of the light guide plate to a shape for removing the mura corresponding to the shape of the mura generated in the liquid crystal display module; And when the dot pattern density is adjusted to a predetermined shape at a position where the mura generated in the liquid crystal display module can be removed when the curved display device is manufactured, the controller controls the dot pattern of the entire light guide plate to which the adjusted dot pattern density is applied.
- Generating a characterized in that it comprises a.
- the control unit by reflecting the curvature information of the curved display device in the photographed image, and virtually generates a rectangular image formed of only a straight line without a curve on the four sides,
- the compensated mura position in the virtual rectangular image is calculated by reflecting the compensation value applied to generate the virtual rectangular image to the position value of the mura detected on the image.
- the controller in the step of detecting the shape of the mura, is configured to apply a spline smoothing technique to the detected mura shape to create a boundary line for irregularly appearing points near the boundary of the mura.
- a spline smoothing technique to the detected mura shape to create a boundary line for irregularly appearing points near the boundary of the mura.
- the control unit by reflecting the curvature information of the curved display device in the photographed image, and virtually generates a rectangular image formed only in a straight line without a curve on the four sides,
- the compensated Mura shape in the virtual rectangular image is calculated by reflecting the compensation value applied to generate the virtual rectangular image to the shape of the Mura detected on the image.
- the controller in the step of adjusting the density of the dot pattern of the light guide plate, is a shape that follows the shape of the mura to increase the density of the dot pattern more than the average density around, or the mura
- the polygonal or circular or elliptical shape covering the entire shape of the dot pattern is characterized in that to increase more than the average density of the surrounding.
- the present invention can improve the cell mura by designing the dot density of the light guide plate (LGP) based on the shape of the cell mura generation region measured by the liquid crystal display module (LCM) do.
- LGP light guide plate
- LCD liquid crystal display module
- FIG. 1 is an exemplary view illustrating a reason why a cell mura occurs when a flat panel display implements a device and a curved display device using a liquid crystal display module (LCM).
- LCD liquid crystal display module
- Figure 2 is an exemplary view showing a schematic configuration of a light guide plate pattern design apparatus according to an embodiment of the present invention.
- FIG 3 is an exemplary view for explaining a light guide plate pattern design method according to an embodiment of the present invention.
- FIG. 4 is an exemplary view showing that mura is generated by cell stress when a curved display device is manufactured using a liquid crystal display module (LCM) according to an embodiment of the present invention.
- LCD liquid crystal display module
- Figure 5 is an exemplary view showing the type of shape for adjusting the dot pattern density in accordance with an embodiment of the present invention.
- FIG. 6 is an exemplary view showing a luminance graph according to the density that can be referred to when adjusting the dot density of the light guide plate according to an embodiment of the present invention.
- FIG. 2 is an exemplary view showing a schematic configuration of a light guide plate pattern design apparatus according to an embodiment of the present invention.
- the light guide plate pattern design apparatus includes a camera unit 110, a Mura position detector 120, a Mura shape detector 130, a Mura position compensator 140, and a Mura shape compensation
- the unit 150 includes a dot pattern density adjusting unit 160 and an entire dot pattern generating unit 170.
- the camera unit 110 measures the degree of brightness output from the screen of the liquid crystal display module (LCM). That is, the camera unit 110 measures the brightness of the unit area in which the backlight light source output through the LGP is output through the LCD panel on the front surface.
- LCD liquid crystal display module
- the liquid crystal display module (LCM) for measuring the degree of brightness is for applying to a curved display device, which is a curved type, and the light guide plate is formed by bending a light guide plate in which dot patterns (or patterns) are regularly arranged.
- the camera unit 110 may not only include a camera, but may also include a luminance detector such as a spectral luminance meter or a color luminance meter. Accordingly, the camera unit 110 may be referred to as a luminance detector, and in some embodiments, a separate luminance meter may be mounted instead of the camera unit 110.
- a luminance detector such as a spectral luminance meter or a color luminance meter. Accordingly, the camera unit 110 may be referred to as a luminance detector, and in some embodiments, a separate luminance meter may be mounted instead of the camera unit 110.
- the mura position detection unit 120 detects the mura position based on the information (eg, image information, brightness information, etc.) photographed by the camera unit 110.
- the information eg, image information, brightness information, etc.
- the liquid crystal display module LCM is applied to a curved display device, the display device photographed from the front through the camera unit 110 is not a perfect rectangular image but a rectangular image including curvature on both sides of the left and right sides. (See FIG. 4A). Therefore, there is a difference between the position of Mura detected on the rectangular image including the curvature and the position where actual Mura occurs in the liquid crystal display module LCM.
- the Mura position compensator 140 virtually generates a complete rectangular image (that is, a rectangular image formed only in a straight line without curves on four sides) by reflecting curvature information of the curved display device in the photographed image.
- the Mura position in the virtual rectangular image is calculated and output by reflecting the compensation value applied to generate the virtual rectangular image to the position value of the mura detected on the image.
- the Mura shape detection unit 130 detects the shape of Mura based on information (eg, image information, brightness information, etc.) photographed by the camera unit 110 (see FIGS. 4A and 4B). .
- information eg, image information, brightness information, etc.
- the mura point regions are gathered to form an overall mura shape, it is not easy to specify the boundary of the mura shape.
- FIG. 4 is an exemplary view showing that mura occurs due to cell stress when a curved display device is manufactured using a liquid crystal display module (LCM) according to an embodiment of the present invention.
- Mura shape shown in the image taken from the front surface of the curved display device Figure 4 (b) shows the mura shape by the color luminance image
- Figure 4 (c) is the mura occurs in the side of the curved display device It is an exemplary cross section showing the position.
- the Mura shape detection unit 130 applies a spline smoothing technique to the detected Mura shape to approximate the boundary lines for irregularly appearing point regions near the Mura boundary, thereby forming the overall shape of the Mura shape. Specifies.
- the liquid crystal display module LCM is applied to the curved display device as described above, that is, the display device photographed from the front through the camera unit 110 is not a perfect square image but has curvatures on both sides of the left and right sides. Since the included rectangular image, the shape of the mura detected on the rectangular image including the curvature is different from the shape of the actual mura generated in the liquid crystal display module LCM.
- the Mura shape compensator 150 calculates the more accurate Mura shape.
- the Mura shape compensator 150 reflects the curvature information of the curved display device to the photographed image to form a complete quadrangle image (that is, a quadrangle image formed only in a straight line without curves on four sides). ) Is virtually generated, and the Mura shape in the virtual rectangular image is calculated and output by reflecting the compensation value applied to generate the virtual rectangular image to the shape of Mura detected on the image.
- the dot pattern density adjusting unit 160 adjusts the density of the dot pattern to a shape for removing the mura in response to the shape of the mura generated in the curved display device.
- the dot pattern is a reflective dot pattern that causes diffuse reflection to emit light incident into the light guide plate (e.g., light emitted from the backlight light source) to the outside of the light guide plate.
- light incident into the light guide plate e.g., light emitted from the backlight light source
- processing methods such as a method, a cutting method, and an injection method.
- the dot pattern density adjusting unit 160 may adjust the density of the dot pattern to a shape that follows the shape of the mura (see FIG. 5A) (see FIG. 5C) or the dot pattern.
- the density of can be adjusted to a polygonal shape (eg, triangular, square, pentagonal, hexagonal, etc.) or circular (or elliptical) covering the entire shape of the mura (see FIG. 5B).
- FIG 5 is an exemplary view showing a type of shape for adjusting the dot pattern density according to an embodiment of the present invention.
- the dot pattern density adjusting unit 160 follows the shape of the mura and increases the density of the dot pattern more than the average density of the surroundings (see FIG. 5C), or the entire shape of the mura.
- the density of the dot pattern to be adjusted is based on the density of the dot pattern used for the test.
- the density of the dot pattern adjusted by the dot pattern density adjusting unit 160 may be adjusted by referring to a luminance (or light quantity) graph or a lookup table according to a preset density (see FIG. 6).
- FIG. 6 is an exemplary view illustrating a luminance graph according to a density that may be referred to when adjusting the dot density of a light guide plate according to an embodiment of the present invention.
- a mura region exists at a specific position (distance)
- the dot density that is, the density per unit area
- the luminance of the portion which was the mura region can be restored similar to the luminance (or the amount of light) of the surroundings.
- the entire pattern shape generating unit 170 generates the entire dot pattern to which the adjusted pattern density is applied in correspondence with the compensated mura shape at the compensated mura position. That is, the entire dot pattern is a dot pattern in which dot density of a portion where Mura is generated by cell stress is compensated when the planar light guide plate is bent according to curvature when the curved display device is manufactured.
- the remaining components 120 to 170 except for the camera unit 110 among the components 110 to 170 described in the present embodiment may be a controller (not shown).
- the same function can be integrated so that the same function can be executed.
- FIG 3 is an exemplary view for explaining a light guide plate pattern design method according to an embodiment of the present invention.
- the camera unit 110 measures the brightness output from the screen of the liquid crystal display module LCM (S101).
- the camera unit 110 performs a function of a brightness detector as well as a function of photographing an image. Accordingly, the camera unit 110 may include a camera sensor and a brightness detection sensor.
- the controller (not shown) performs a function of the mura position detection unit 120 to detect the position of mura based on information (eg, image information, brightness information, etc.) photographed by the camera unit 110 ( S102).
- information eg, image information, brightness information, etc.
- the controller virtually generates a complete square image (that is, a rectangular image formed only in a straight line without curves on four sides) by reflecting curvature information of the curved display device on the photographed image, and the virtual image.
- the compensated Mura position in the virtual rectangular image is calculated by reflecting the compensation value applied to generate a rectangular image of the Mura to the Mura position value detected on the image.
- the controller (not shown) performs a function of the Mura shape detection unit 130 to detect the shape of the Mura based on information (eg, image information, brightness information, etc.) photographed by the camera unit 110. (S104) (see FIG. 4 (a), (b)).
- the controller (not shown) specifies the overall shape of the mura by approximating the boundary lines of irregularly appearing point regions by applying a spline smoothing technique to the detected mura shape.
- the liquid crystal display module LCM since the liquid crystal display module LCM has a curvature applied thereto, there is a difference between the shape of the mura on the photographed image and the shape of the actual mura generated on the liquid crystal display module LCM. Compensates the shape of the mura (S105).
- the controller virtually generates a complete square image (that is, a rectangular image formed only in a straight line without curves on four sides) by reflecting curvature information of the curved display device on the photographed image, and the virtual image.
- the Mura shape in the imaginary rectangular image is calculated by reflecting a compensation value applied to generate a rectangular image of the Mura to the shape of the Mura detected on the image.
- the controller (not shown) performs a function of the dot pattern density adjusting unit 160 to adjust the density of the dot pattern to a shape for removing the mura in response to the shape of the mura generated in the curved display device. (S106).
- the controller may follow the shape of the mura and increase the density of the dot pattern more than the average density of the surroundings (see FIG. 5C), or cover the entire shape of the mura.
- the controller may follow the shape of the mura and increase the density of the dot pattern more than the average density of the surroundings (see FIG. 5C), or cover the entire shape of the mura.
- the controller may follow the shape of the mura and increase the density of the dot pattern more than the average density of the surroundings (see FIG. 5C), or cover the entire shape of the mura.
- the controller may adjust the density of the dot pattern with reference to a luminance (or light quantity) graph or a lookup table according to a preset density (see FIG. 6).
- the controller when the dot pattern density capable of eliminating mura generated during fabrication of the curved display device is adjusted by following a predetermined shape (eg, polygon, circle, oval, mura shape, etc.), the controller (not shown) The entire dot pattern to which the dot pattern density adjusted to the preset shape is applied is generated (S107).
- a predetermined shape eg, polygon, circle, oval, mura shape, etc.
- the curved display device is manufactured using the liquid crystal display module (LCM) including the light guide plate processed into the dot pattern, the occurrence of mura can be prevented.
- LCD liquid crystal display module
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Abstract
Description
Claims (15)
- 곡면 디스플레이 장치에 장착된 액정표시장치모듈을 촬영하는 카메라부;상기 카메라부에서 촬영된 이미지 정보와 휘도 정보에 기초하여 무라의 위치를 검출하는 무라 위치 검출부;상기 카메라부에서 촬영된 이미지 정보와 휘도 정보에 기초하여 무라의 형상을 검출하는 무라 형상 검출부;상기 액정표시장치모듈에 생성된 무라의 형상에 대응하여 상기 무라를 제거하기 위한 형상으로 도광판의 도트 패턴의 밀도를 조정하는 도트 패턴 밀도 조정부; 및상기 곡면 디스플레이 장치의 제작 시 액정표시장치모듈에 발생하는 무라를 제거할 수 있는 위치에 도트 패턴 밀도가 미리 지정된 형상으로 조정되면, 상기 조정된 도트 패턴 밀도가 적용된 도광판 전체의 도트 패턴을 생성하는 전체 도트 패턴 생성부;를 포함하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 1항에 있어서, 상기 카메라부는,이미지 촬영을 위한 센서 및 휘도 검출을 위한 센서를 포함하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 1항에 있어서, 상기 촬영된 이미지 상의 무라의 위치와 상기 액정표시장치모듈에 발생한 실제 무라의 위치의 차이를 보상하는 무라 위치 보상부;를 더 포함하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 3항에 있어서, 상기 무라 위치 보상부는,상기 촬영된 이미지에 곡면 디스플레이 장치의 곡률 정보를 반영하여, 4변에 곡선이 없이 직선으로만 형성된 사각형 이미지를 가상으로 생성하고, 상기 가상의 사각형 이미지를 생성하기 위하여 적용된 보상 값을 상기 이미지 상에서 검출된 무라의 위치 값에 반영하여, 상기 가상의 사각형 이미지 내에서의 보상된 무라 위치를 산출하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 1항에 있어서, 상기 무라 형상 검출부는,상기 검출된 무라 형상에 스플라인 평활화(Spline Smoothing) 기법을 적용하여 무라의 경계 부근에서 불규칙하게 나타나는 점 영역들에 대한 경계선을 근사화 시킴으로써 무라의 전체적인 형상을 특정하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 1항에 있어서, 상기 촬영된 이미지 상의 무라 형상과 상기 액정표시장치모듈에 발생한 실제 무라 형상의 차이를 보상하는 무라 형상 보상부;를 더 포함하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 6항에 있어서, 상기 무라 형상 보상부는,상기 촬영된 이미지에 곡면 디스플레이 장치의 곡률 정보를 반영하여, 4변에 곡선이 없이 직선으로만 형성된 사각형 이미지를 가상으로 생성하고, 상기 가상의 사각형 이미지를 생성하기 위하여 적용된 보상 값을 상기 이미지 상에서 검출된 무라의 형상에 반영하여, 상기 가상의 사각형 이미지 내에서의 보상된 무라 형상을 산출하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 1항에 있어서, 상기 도트 패턴 밀도 조정부는,상기 무라의 형상을 추종하는 형상으로 상기 도트 패턴의 밀도를 주변의 평균 밀도보다 더 증가시키거나, 또는상기 무라의 형상 전체를 커버하는 다각형이나 원형 또는 타원형 형상으로 상기 도트 패턴의 밀도를 주변의 평균 밀도보다 더 증가시키는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 제 8항에 있어서, 상기 도트 패턴 밀도 조정부는,미리 설정된 밀도에 따른 휘도나 광량 그래프, 또는 룩업 테이블을 참조하여 도트 패턴의 밀도를 조정하는 것을 특징으로 하는 도광판 패턴 설계 장치.
- 카메라부가 곡면 디스플레이 장치에 장착된 액정표시장치모듈을 촬영하는 단계;제어부가 상기 카메라부에서 촬영된 이미지 정보와 휘도 정보에 기초하여 무라의 위치와 무라의 형상을 검출하는 단계;상기 제어부가 상기 액정표시장치모듈에 생성된 무라의 형상에 대응하여 무라를 제거하기 위한 형상으로 도광판의 도트 패턴의 밀도를 조정하는 단계; 및상기 곡면 디스플레이 장치의 제작 시 액정표시장치모듈에 발생하는 무라를 제거할 수 있는 위치에 도트 패턴 밀도가 미리 지정된 형상으로 조정되면, 상기 제어부가 상기 조정된 도트 패턴 밀도가 적용된 도광판 전체의 도트 패턴을 생성하는 단계;를 포함하는 것을 특징으로 하는 도광판 패턴 설계 방법.
- 제 10항에 있어서,상기 무라의 위치와 무라의 형상을 검출하는 단계 이후,상기 제어부가 상기 촬영된 이미지 상의 무라의 위치와 상기 액정표시장치모듈에 발생한 실제 무라의 위치의 차이를 보상하는 무라 위치 보상 단계; 및상기 제어부가 상기 촬영된 이미지 상의 무라 형상과 상기 액정표시장치모듈에 발생한 실제 무라 형상의 차이를 보상하는 무라 형상 보상 단계;를 더 포함하는 것을 특징으로 하는 도광판 패턴 설계 방법.
- 제 11항에 있어서, 상기 무라 위치 보상 단계에서,상기 제어부는,상기 촬영된 이미지에 곡면 디스플레이 장치의 곡률 정보를 반영하여, 4변에 곡선이 없이 직선으로만 형성된 사각형 이미지를 가상으로 생성하고, 상기 가상의 사각형 이미지를 생성하기 위하여 적용된 보상 값을 상기 이미지 상에서 검출된 무라의 위치 값에 반영하여, 상기 가상의 사각형 이미지 내에서의 보상된 무라 위치를 산출하는 것을 특징으로 하는 도광판 패턴 설계 방법.
- 제 11항에 있어서, 상기 무라의 형상을 검출하는 단계에서,상기 제어부는,상기 검출된 무라 형상에 스플라인 평활화(Spline Smoothing) 기법을 적용하여 무라의 경계 부근에서 불규칙하게 나타나는 점 영역들에 대한 경계선을 근사화 시킴으로써 무라의 전체적인 형상을 특정하는 것을 특징으로 하는 도광판 패턴 설계 방법.
- 제 11항에 있어서, 상기 무라 형상 보상 단계에서,상기 제어부는,상기 촬영된 이미지에 곡면 디스플레이 장치의 곡률 정보를 반영하여, 4변에 곡선이 없이 직선으로만 형성된 사각형 이미지를 가상으로 생성하고, 상기 가상의 사각형 이미지를 생성하기 위하여 적용된 보상 값을 상기 이미지 상에서 검출된 무라의 형상에 반영하여, 상기 가상의 사각형 이미지 내에서의 보상된 무라 형상을 산출하는 것을 특징으로 하는 도광판 패턴 설계 방법.
- 제 10항에 있어서, 상기 도광판의 도트 패턴의 밀도를 조정하는 단계에서,상기 제어부는,상기 무라의 형상을 추종하는 형상으로 상기 도트 패턴의 밀도를 주변의 평균 밀도보다 더 증가시키거나, 또는 상기 무라의 형상 전체를 커버하는 다각형이나 원형 또는 타원형 형상으로 상기 도트 패턴의 밀도를 주변의 평균 밀도보다 더 증가시키는 것을 특징으로 하는 도광판 패턴 설계 방법.
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CN110398801A (zh) * | 2019-07-31 | 2019-11-01 | 江南大学 | 一种基于散射效率的导光板散射网点设计方法 |
CN110581943A (zh) * | 2018-06-11 | 2019-12-17 | 宏碁股份有限公司 | 针对非平面屏幕的色不均瑕疵补偿系统 |
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TWI743646B (zh) * | 2020-01-07 | 2021-10-21 | 和碩聯合科技股份有限公司 | 一種導光柱影像的處理方法與裝置 |
TWI762411B (zh) * | 2021-08-23 | 2022-04-21 | 大陸商集創北方(珠海)科技有限公司 | 螢幕雲紋消除方法及系統 |
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