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TWI841371B - Uniformity correction method for a display device - Google Patents

Uniformity correction method for a display device Download PDF

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TWI841371B
TWI841371B TW112116622A TW112116622A TWI841371B TW I841371 B TWI841371 B TW I841371B TW 112116622 A TW112116622 A TW 112116622A TW 112116622 A TW112116622 A TW 112116622A TW I841371 B TWI841371 B TW I841371B
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regions
display device
brightness
adjustment factor
uniformity
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TW202443526A (en
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張建文
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大陸商業成光電（深圳）有限公司
大陸商業成科技（成都）有限公司
英特盛科技股份有限公司
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)

Abstract

A uniformity correction method for a display device includes obtaining a color uniformity data of a display panel of the display device and a luminance uniformity data of a light source module of the display device when the display panel shows a solid color pattern and the brightness of the light source module is fully bright. Then, according to the color uniformity data and the luminance uniformity data, the display device is corrected for the first time and a color difference value is obtained. If the color difference value is less than a preset value, the correction parameters of the display device are determined according to the display device after the first correction. If the color difference value is greater than or equal to the preset value, a regulatory factor is obtained according to the corrected display panel to make a second correction of the display device, and the correction parameters of the display device are determined according to the display device after the second correction.

Description

顯示裝置的均勻度校正方法Uniformity correction method for display device

本發明是有關一種顯示裝置，特別是關於一種顯示裝置的均勻度校正方法。The present invention relates to a display device, and more particularly to a uniformity correction method for a display device.

顯示裝置已成為生活中不可或缺的裝置，例如LCD顯示器及抬頭顯示器(Head-up Display; HUD)。顯示裝置通常包括一顯示面板及一光源模組，其中顯示面板可以是LCD面板，而光源模組可以是直下式或側光式。圖1顯示傳統的顯示裝置10的剖面圖，其中顯示裝置10包括一顯示面板12及一光源模組14。圖2顯示圖1中顯示面板12及光源模組14的上視圖。顯示面板12是用以決定要顯示的影像。光源模組14為直下式背光板，設置在顯示面板12的背面或下方。光源模組14發出光線至顯示面板12，以決定所顯示的影像的亮度。光源模組14可劃分為多個區域142(如圖2所示)，每一個區域142包括多個發光二極體(LED)。光源模組14可以控制每一個區域142的多個LED的工作週期(duty cycle)及/或電流，來決定每一個區域142的亮度。多個區域142的亮度可以各別地調整，因此多個區域142所提供的亮度可以不同。Display devices have become indispensable devices in our lives, such as LCD displays and head-up displays (HUDs). Display devices generally include a display panel and a light source module, wherein the display panel may be an LCD panel, and the light source module may be a direct-lit type or a side-lit type. FIG. 1 shows a cross-sectional view of a conventional display device 10, wherein the display device 10 includes a display panel 12 and a light source module 14. FIG. 2 shows a top view of the display panel 12 and the light source module 14 in FIG. 1 . The display panel 12 is used to determine the image to be displayed. The light source module 14 is a direct-lit backlight panel, which is disposed on the back or below the display panel 12. The light source module 14 emits light to the display panel 12 to determine the brightness of the displayed image. The light source module 14 can be divided into a plurality of regions 142 (as shown in FIG. 2 ), and each region 142 includes a plurality of light emitting diodes (LEDs). The light source module 14 can control the duty cycle and/or current of the plurality of LEDs in each region 142 to determine the brightness of each region 142. The brightness of the plurality of regions 142 can be adjusted individually, so the brightness provided by the plurality of regions 142 can be different.

然而，顯示面板12及光源模組14各自包含了多個元件，而這些元件的參數基本上無法完全一致，這導致了顯示裝置出現色度及/或亮度不均勻的現象。舉例來說，在顯示面板12顯示純色圖案(如全紅、全藍或全綠圖像)的情況下，部分區域122及124的色度可能出現偏差，如圖2所示，導致顯示面板12所顯示的圖像的色度不均勻。同樣的，在光源模組14要將所有區域142的亮度調整為一致時，部分區域1422及1424的亮度可能高於或低於其他區域。However, the display panel 12 and the light source module 14 each include a plurality of components, and the parameters of these components are basically not completely consistent, which causes the display device to have uneven chromaticity and/or brightness. For example, when the display panel 12 displays a pure color pattern (such as a full red, full blue or full green image), the chromaticity of the partial regions 122 and 124 may deviate, as shown in FIG. 2 , resulting in uneven chromaticity of the image displayed by the display panel 12. Similarly, when the light source module 14 adjusts the brightness of all regions 142 to be consistent, the brightness of the partial regions 1422 and 1424 may be higher or lower than that of other regions.

目前改善不均勻現象的方法是使用組配方式。組配方式是先對多個顯示面板12及多個光源模組14進行量測，再依據量測結果挑選合適的顯示面板12及光源模組14來組成顯示裝置10。組配完成後，需要使用最小可覺差(Just-noticeable difference; JND)濾片來檢測顯示裝置10的均勻度是否符合規定。然而，這樣的組配方式，難以有效改善不均勻現象，而且組配完成後的顯示裝置10若不符合均勻度的要求，則顯示裝置10將被捨棄，導致整體的製造成本上升。The current method to improve the unevenness is to use an assembly method. The assembly method is to first measure multiple display panels 12 and multiple light source modules 14, and then select appropriate display panels 12 and light source modules 14 to assemble the display device 10 based on the measurement results. After the assembly is completed, a minimum noticeable difference (Just-noticeable difference; JND) filter is required to detect whether the uniformity of the display device 10 meets the requirements. However, such an assembly method is difficult to effectively improve the unevenness phenomenon, and if the display device 10 after assembly does not meet the uniformity requirements, the display device 10 will be discarded, resulting in an increase in the overall manufacturing cost.

本發明的目的在於，提出一種顯示裝置的均勻度校正方法。The purpose of the present invention is to provide a uniformity correction method for a display device.

本發明的顯示裝置的均勻度校正方法包括：在該顯示裝置的顯示面板顯示一純色圖案且該顯示裝置的光源模組的亮度為全亮的狀態下，取得該顯示面板的色度均勻度資料以及該光源模組的亮度均勻度資料；根據該色度均勻度資料產生一第一調節因子，其中該第一調節因子是用以校正該顯示面板的伽瑪參數；根據該亮度均勻度資料產生一第二調節因子，其中該第二調節因子是用以校正該光源模組的亮度；根據該第一調節因子及該第二調節因子對該顯示裝置進行第一次校正，並取得該顯示裝置經該第一次校正後的一色差值；若該色差值小於一預設值，根據經該第一次校正後的該顯示裝置決定該顯示裝置的校正參數；以及若該色差值大於或等於該預設值，依據經該第一調節因子校正後的該顯示面板取得一第三調節因子對該顯示裝置進行第二次校正，並根據經該第二次校正後的該顯示裝置決定該顯示裝置的校正參數，其中該第三調節因子是用以校正該顯示面板的畫素資料的參數。The uniformity correction method of the display device of the present invention comprises: when the display panel of the display device displays a pure color pattern and the brightness of the light source module of the display device is in a full brightness state, obtaining the chromaticity uniformity data of the display panel and the brightness uniformity data of the light source module; generating a first adjustment factor according to the chromaticity uniformity data, wherein the first adjustment factor is used to correct the gamma parameter of the display panel; generating a second adjustment factor according to the brightness uniformity data, wherein the second adjustment factor is used to correct the brightness of the light source module; adjusting the brightness of the light source module according to the first adjustment factor and the second adjustment factor; The display device is calibrated for the first time by a control unit, and a color difference value of the display device after the first calibration is obtained; if the color difference value is less than a preset value, a correction parameter of the display device is determined according to the display device after the first calibration; and if the color difference value is greater than or equal to the preset value, a third adjustment factor is obtained according to the display panel after the first calibration to perform a second calibration on the display device, and the correction parameter of the display device is determined according to the display device after the second calibration, wherein the third adjustment factor is a parameter used to calibrate pixel data of the display panel.

在一實施例中，取得該色度均勻度資料的步驟包括：取得該顯示面板整體的色度分佈資訊；以及利用一第一演算法根據該色度分佈資訊計算出該色度均勻度資料。取得該第三調節因子的步驟包括：將該顯示面板劃分為多個區域；利用一第二演算法依據每一個該區域中所有子像素的像素值，計算出該多個區域的多個校正值，其中每一個該區域對應一個校正值；以及依據該多個校正值，決定該第三調節因子。In one embodiment, the step of obtaining the chromaticity uniformity data includes: obtaining the chromaticity distribution information of the entire display panel; and using a first algorithm to calculate the chromaticity uniformity data according to the chromaticity distribution information. The step of obtaining the third adjustment factor includes: dividing the display panel into a plurality of regions; using a second algorithm to calculate a plurality of correction values of the plurality of regions according to the pixel values of all sub-pixels in each of the regions, wherein each of the regions corresponds to a correction value; and determining the third adjustment factor according to the plurality of correction values.

在一實施例中，取得該亮度均勻度資料的步驟包括：取得該光源模組整體的亮度分佈資訊；以及利用一演算法根據該亮度分佈資訊計算出該亮度均勻度資料。In one embodiment, the step of obtaining the brightness uniformity data includes: obtaining the brightness distribution information of the entire light source module; and using an algorithm to calculate the brightness uniformity data according to the brightness distribution information.

在一實施例中，取得該亮度均勻度資料的步驟包括：將該光源模組劃分為多個區域；取得該多個區域的多個亮度分佈資訊，其中每一個該區域對應一個該亮度分佈資訊；以及利用一演算法根據該多個亮度分佈資訊計算出該亮度均勻度資料。該多個區域的亮度可以各別控制。In one embodiment, the step of obtaining the brightness uniformity data includes: dividing the light source module into a plurality of regions; obtaining a plurality of brightness distribution information of the plurality of regions, wherein each of the regions corresponds to a piece of the brightness distribution information; and calculating the brightness uniformity data according to the plurality of brightness distribution information using an algorithm. The brightness of the plurality of regions can be controlled separately.

在一實施例中，取得該色度均勻度資料的步驟包括：將該顯示面板劃分為多個第一區域；取得該多個第一區域的多個色度分佈資訊，其中每一個該第一區域對應一個該色度分佈資訊；以及利用一第一演算法根據該多個色度分佈資訊計算出該色度均勻度資料。取得該亮度均勻度資料的步驟包括：將該光源模組劃分為多個第二區域；取得該多個第二區域的多個亮度分佈資訊，其中每一個該第二區域對應一個該亮度分佈資訊；以及利用一第二演算法根據該多個亮度分佈資訊計算出該亮度均勻度資料。每一個該第一區域的面積等於每一個該第二區域的面積。In one embodiment, the step of obtaining the chromaticity uniformity data includes: dividing the display panel into a plurality of first regions; obtaining a plurality of chromaticity distribution information of the plurality of first regions, wherein each of the first regions corresponds to a piece of the chromaticity distribution information; and using a first algorithm to calculate the chromaticity uniformity data according to the plurality of chromaticity distribution information. The step of obtaining the brightness uniformity data includes: dividing the light source module into a plurality of second regions; obtaining a plurality of brightness distribution information of the plurality of second regions, wherein each of the second regions corresponds to a piece of the brightness distribution information; and using a second algorithm to calculate the brightness uniformity data according to the plurality of brightness distribution information. The area of each of the first regions is equal to the area of each of the second regions.

在一實施例中，取得該色度均勻度資料的步驟包括：將該顯示面板劃分為多個第一區域；取得該多個第一區域的多個色度分佈資訊，其中每一個該第一區域對應一個該色度分佈資訊；以及利用一第一演算法根據該多個色度分佈資訊計算出該色度均勻度資料。取得該第三調節因子的步驟包括：將該顯示面板劃分為多個第二區域，其中每一個該第二區域的面積小於每一個該第一區域的面積；利用一第二演算法依據每一個該第二區域中所有子像素的像素值，計算出該多個第二區域的多個校正值，其中每一個該第二區域對應一個該校正值；以及依據該多個校正值，決定該第三調節因子。In one embodiment, the step of obtaining the chromaticity uniformity data includes: dividing the display panel into a plurality of first regions; obtaining a plurality of chromaticity distribution information of the plurality of first regions, wherein each of the first regions corresponds to one of the chromaticity distribution information; and using a first algorithm to calculate the chromaticity uniformity data according to the plurality of chromaticity distribution information. The step of obtaining the third adjustment factor includes: dividing the display panel into a plurality of second regions, wherein the area of each of the second regions is smaller than the area of each of the first regions; using a second algorithm to calculate a plurality of correction values of the plurality of second regions according to the pixel values of all sub-pixels in each of the second regions, wherein each of the second regions corresponds to one of the correction values; and determining the third adjustment factor according to the plurality of correction values.

本發明的顯示裝置的均勻度校正方法可以有效改善顯示裝置的不均勻現象，而且本發明的均勻度校正方法可以對組配後的顯示裝置的均勻度進行校正，使其符合規範，因而可以降低整體的製造成本。The uniformity correction method of the display device of the present invention can effectively improve the non-uniformity phenomenon of the display device, and the uniformity correction method of the present invention can correct the uniformity of the assembled display device to make it meet the specifications, thereby reducing the overall manufacturing cost.

圖3顯示本發明顯示裝置的均勻度校正方法的實施例。如圖1所示，顯示裝置10包括一顯示面板12及一光源模組14，本發明的顯示裝置10可以是但不限於LCD顯示器或抬頭顯示器，顯示面板可以是但不限於LCD面板，光源模組14可以是直下式或側光式。在圖3的步驟S10中，顯示裝置10控制顯示面板12顯示一純色圖案並且控制光源模組14的亮度為全亮，在此狀態下，一檢測裝置(圖中未示)取得顯示面板12的色度均勻度資料以及光源模組14的亮度均勻度資料。所述的純色圖案可以是但不限於全紅、全藍或全綠的圖像。在一實施例中，該檢測裝置包括一攝影機(圖中未示)用以取得該顯示裝置10所顯示的影像，檢測裝置再依據該影像得到或計算出顯示面板12的色度均勻度資料及光源模組的亮度均勻度資料。FIG3 shows an embodiment of the uniformity correction method of the display device of the present invention. As shown in FIG1 , the display device 10 includes a display panel 12 and a light source module 14. The display device 10 of the present invention may be, but is not limited to, an LCD display or a head-up display, the display panel may be, but is not limited to, an LCD panel, and the light source module 14 may be a direct-lit type or a side-lit type. In step S10 of FIG3 , the display device 10 controls the display panel 12 to display a pure color pattern and controls the brightness of the light source module 14 to be fully lit. In this state, a detection device (not shown in the figure) obtains the chromaticity uniformity data of the display panel 12 and the brightness uniformity data of the light source module 14. The pure color pattern may be, but is not limited to, an image of full red, full blue or full green. In one embodiment, the detection device includes a camera (not shown) for acquiring the image displayed by the display device 10, and the detection device then obtains or calculates the color uniformity data of the display panel 12 and the brightness uniformity data of the light source module based on the image.

在取得色度均勻度資料及光源模組的亮度均勻度資料後，進行步驟S12。在步驟S12中，檢測裝置根據色度均勻度資料產生一第一調節因子X1。在取得第一調節因子X1後，進行步驟S14。在步驟S14中，檢測裝置根據亮度均勻度資料產生一第二調節因子Y1。在圖3的實施例中，本發明的均勻度校正方法是先進行步驟S12取得第一調節因子X1後，再進行步驟S14取得第二調節因子Y1，但本發明不限於此，本發明的均勻度校正方法也可以先進行步驟S14取得第二調節因子Y1後，再進行步驟S12取得第一調節因子X1，或者是同時進行步驟S12及S14取得第一調節因子X1及第二調節因子Y1。After obtaining the chromaticity uniformity data and the brightness uniformity data of the light source module, step S12 is performed. In step S12, the detection device generates a first adjustment factor X1 according to the chromaticity uniformity data. After obtaining the first adjustment factor X1, step S14 is performed. In step S14, the detection device generates a second adjustment factor Y1 according to the brightness uniformity data. In the embodiment of FIG. 3 , the uniformity correction method of the present invention first performs step S12 to obtain the first adjustment factor X1, and then performs step S14 to obtain the second adjustment factor Y1, but the present invention is not limited thereto. The uniformity correction method of the present invention may also first perform step S14 to obtain the second adjustment factor Y1, and then perform step S12 to obtain the first adjustment factor X1, or perform steps S12 and S14 simultaneously to obtain the first adjustment factor X1 and the second adjustment factor Y1.

在取得第一調節因子X1及第二調節因子Y1後，進行步驟S16。在步驟S16中，顯示裝置10依據第一調節因子X1及第二調節因子Y1進行第一次校正。具體來說，顯示裝置10依據第一調節因子X1校正顯示面板12的伽瑪參數，並且依據第二調節因子Y1是用以校正光源模組14的亮度。在顯示裝置10完成第一次校正後，檢測裝置再次檢測顯示裝置10，以得到顯示裝置10經第一次校正後的一色差值ΔE。After obtaining the first adjustment factor X1 and the second adjustment factor Y1, step S16 is performed. In step S16, the display device 10 performs a first calibration according to the first adjustment factor X1 and the second adjustment factor Y1. Specifically, the display device 10 calibrates the gamma parameter of the display panel 12 according to the first adjustment factor X1, and calibrates the brightness of the light source module 14 according to the second adjustment factor Y1. After the display device 10 completes the first calibration, the detection device detects the display device 10 again to obtain a color difference value ΔE of the display device 10 after the first calibration.

取得色差值ΔE後，進行步驟S18。在步驟S18中，檢測裝置判斷色差值ΔE是否小於一預設值。當檢測裝置判定色差值ΔE小於預設值時，代表顯示裝置經第一次校正後的均勻度符合要求，因此進行步驟S20。在步驟S20中，根據經第一次校正後的顯示裝置10決定顯示裝置10的校正參數，並將該校正參數儲存在顯示裝置10中。具體來說，步驟S20是依據經第一次校正後的顯示面板12的色度分佈及光源模組14的亮度分佈決定校正參數。在一實施例中，該校正參數可以是一查找表(look-up table)，根據所要顯示的圖像數據，顯示裝置10依據該查找表選取合適的調節因子。在一實施例中，可以使用演算法依據第一調節因子X1及第二調節因子Y1計算出該校正參數。在一實施例中，可以使用第一調節因子X1及第二調節因子Y1作為該校正參數。After obtaining the color difference value ΔE, proceed to step S18. In step S18, the detection device determines whether the color difference value ΔE is less than a preset value. When the detection device determines that the color difference value ΔE is less than the preset value, it means that the uniformity of the display device after the first calibration meets the requirements, so step S20 is performed. In step S20, the correction parameters of the display device 10 are determined based on the display device 10 after the first calibration, and the correction parameters are stored in the display device 10. Specifically, step S20 determines the correction parameters based on the chromaticity distribution of the display panel 12 and the brightness distribution of the light source module 14 after the first calibration. In one embodiment, the correction parameter may be a look-up table. According to the image data to be displayed, the display device 10 selects an appropriate adjustment factor according to the look-up table. In one embodiment, the correction parameter may be calculated using an algorithm according to the first adjustment factor X1 and the second adjustment factor Y1. In one embodiment, the first adjustment factor X1 and the second adjustment factor Y1 may be used as the correction parameter.

在步驟S18中，當檢測裝置判定色差值ΔE大於或等於預設值時，代表顯示裝置經第一次校正後的均勻度不符合要求，因此進行步驟S22。在步驟S22中，檢測裝置依據經第一調節因子校正後的顯示面板12取得一第三調節因子Z1對顯示裝置10進行第二次校正，其中第三調節因子Z1是用以校正顯示面板12的畫素資料的參數。在一實施例中，檢測裝置可以使用一演算法依據顯示面板12所顯示的影像來取得第三調節因子Z1。In step S18, when the detection device determines that the color difference value ΔE is greater than or equal to the preset value, it means that the uniformity of the display device after the first calibration does not meet the requirements, so step S22 is performed. In step S22, the detection device obtains a third adjustment factor Z1 based on the display panel 12 after the first adjustment factor calibration to perform a second calibration on the display device 10, wherein the third adjustment factor Z1 is a parameter for calibrating the pixel data of the display panel 12. In one embodiment, the detection device can use an algorithm to obtain the third adjustment factor Z1 based on the image displayed by the display panel 12.

在顯示裝置10進行第二次校正後，進行步驟S24。在步驟S24中，檢測裝置根據經第二次校正後的顯示裝置10決定顯示裝置10的校正參數，並將該校正參數儲存在顯示裝置10中。具體來說，步驟S24是依據經第二次校正後的顯示面板12的色度分佈及光源模組14的亮度分佈決定校正參數。在一實施例中，該校正參數可以是一查找表(look-up table)，根據所要顯示的圖像數據，顯示裝置10依據該查找表選取合適的調節因子。在一實施例中，可以使用演算法依據第一調節因子X1、第二調節因子Y1及第三調節因子Z1計算出該校正參數。在一實施例中，可以使用第一調節因子X1、第二調節因子Y1及第三調節因子Z1作為該校正參數。After the display device 10 performs the second calibration, step S24 is performed. In step S24, the detection device determines the calibration parameters of the display device 10 according to the display device 10 after the second calibration, and stores the calibration parameters in the display device 10. Specifically, step S24 determines the calibration parameters according to the chromaticity distribution of the display panel 12 and the brightness distribution of the light source module 14 after the second calibration. In one embodiment, the calibration parameters can be a look-up table, and the display device 10 selects a suitable adjustment factor according to the look-up table according to the image data to be displayed. In one embodiment, the calibration parameters can be calculated using an algorithm according to the first adjustment factor X1, the second adjustment factor Y1 and the third adjustment factor Z1. In one embodiment, a first adjustment factor X1, a second adjustment factor Y1, and a third adjustment factor Z1 may be used as the calibration parameters.

圖4是用以說明圖3中步驟S10及S22的第一實施例。圖3的步驟S10包括取得顯示面板12整體的色度分佈資訊以及光源模組14整體的亮度分佈資訊，接著透過一第一演算法及一第二演算法分別根據該色度分佈資訊及該亮度分佈資訊分別計算出色度均勻度資料及亮度均勻度資料。在圖3的步驟S22中，檢測裝置包括利用一第三演算法依據顯示面板12中所有子像素(圖中未示)的像素值，計算出第三調節因子Z1。顯示面板12包含多個像素(圖中未示)，而每一個像素具有多個不同色光的子像素，例如發出紅光的子像素、發出綠光的子像素以及發出藍光的子像素。本發明所使用的第一演算法、第二演算法及第三演算法為常見的演算法，故不再具體說明其計算過程。FIG4 is a first embodiment for explaining steps S10 and S22 in FIG3. Step S10 in FIG3 includes obtaining the chromaticity distribution information of the entire display panel 12 and the brightness distribution information of the entire light source module 14, and then calculating the chromaticity uniformity data and the brightness uniformity data respectively according to the chromaticity distribution information and the brightness distribution information by a first algorithm and a second algorithm. In step S22 in FIG3, the detection device includes calculating the third adjustment factor Z1 according to the pixel values of all sub-pixels (not shown) in the display panel 12 by using a third algorithm. The display panel 12 includes a plurality of pixels (not shown), and each pixel has a plurality of sub-pixels of different colors, such as a sub-pixel emitting red light, a sub-pixel emitting green light, and a sub-pixel emitting blue light. The first algorithm, the second algorithm and the third algorithm used in the present invention are common algorithms, so their calculation processes are not described in detail.

圖5是用以說明圖3中步驟S10及S22的第二實施例。在圖5中，光源模組14被劃分為多個區域142，且多個區域142的亮度可以各別控制。圖3的步驟S10包括取得顯示面板12整體的色度分佈資訊以及光源模組14的多個區域142的多個亮度分佈資訊，其中每一個區域142對應一個亮度分佈資訊，接著透過一第一演算法及一第二演算法分別根據該色度分佈資訊及該多個亮度分佈資訊分別計算出色度均勻度資料及亮度均勻度資料。在圖3的步驟S22中，檢測裝置包括利用一第三演算法依據顯示面板12中所有子像素的像素值，計算出第三調節因子Z1。本發明所使用的第一演算法、第二演算法及第三演算法為常見的演算法，故不再具體說明其計算過程。FIG. 5 is a second embodiment for explaining steps S10 and S22 in FIG. 3 . In FIG. 5 , the light source module 14 is divided into a plurality of regions 142, and the brightness of the plurality of regions 142 can be controlled separately. Step S10 in FIG. 3 includes obtaining the chromaticity distribution information of the entire display panel 12 and the plurality of brightness distribution information of the plurality of regions 142 of the light source module 14, wherein each region 142 corresponds to a brightness distribution information, and then calculating the chromaticity uniformity data and the brightness uniformity data respectively according to the chromaticity distribution information and the plurality of brightness distribution information respectively through a first algorithm and a second algorithm. In step S22 in FIG. 3 , the detection device includes calculating the third adjustment factor Z1 according to the pixel values of all sub-pixels in the display panel 12 using a third algorithm. The first algorithm, the second algorithm and the third algorithm used in the present invention are common algorithms, so their calculation processes are not described in detail.

圖6是用以說明圖3中步驟S10及S22的第三實施例。在圖6中，顯示面板12被劃分為多個區域126，光源模組14被劃分為多個區域142，多個區域142的亮度可以各別控制。圖3的步驟S10包括取得多個區域126的多個色度分佈資訊以及多個區域142的多個亮度分佈資訊，其中每一個區域126對應一個色度分佈資訊，每一個區域142對應一個亮度分佈資訊，接著透過一第一演算法及一第二演算法分別根據該多個色度分佈資訊及該多個亮度分佈資訊分別計算出色度均勻度資料及亮度均勻度資料。在圖3的步驟S22中，檢測裝置包括利用一第三演算法依據每一個區域126中所有子像素的像素值，計算出多個區域126的多個校正值，其中每一個區域126對應一個校正值，接著依據該多個校正值，決定第三調節因子Z1。本發明所使用的第一演算法、第二演算法及第三演算法為常見的演算法，故不再具體說明其計算過程。在圖6的實施例中，區域126的面積等於區域142的面積，但本發明不限於此，區域126的面積也可以小於或大於區域142的面積。FIG6 is a third embodiment for explaining steps S10 and S22 in FIG3. In FIG6, the display panel 12 is divided into a plurality of regions 126, and the light source module 14 is divided into a plurality of regions 142, and the brightness of the plurality of regions 142 can be controlled separately. Step S10 in FIG3 includes obtaining a plurality of chromaticity distribution information of the plurality of regions 126 and a plurality of brightness distribution information of the plurality of regions 142, wherein each region 126 corresponds to a chromaticity distribution information, and each region 142 corresponds to a brightness distribution information, and then respectively calculating chromaticity uniformity data and brightness uniformity data according to the plurality of chromaticity distribution information and the plurality of brightness distribution information by using a first algorithm and a second algorithm. In step S22 of FIG. 3 , the detection device includes using a third algorithm to calculate multiple correction values of multiple regions 126 according to the pixel values of all sub-pixels in each region 126, wherein each region 126 corresponds to a correction value, and then determining a third adjustment factor Z1 according to the multiple correction values. The first algorithm, the second algorithm, and the third algorithm used in the present invention are common algorithms, so their calculation processes are not described in detail. In the embodiment of FIG. 6 , the area of region 126 is equal to the area of region 142, but the present invention is not limited thereto, and the area of region 126 may also be smaller than or larger than the area of region 142.

圖7是用以說明圖3中步驟S10及S22的第四實施例。在圖7中，顯示面板12在步驟S10時被劃分為多個區域126，在步驟S22時被劃分為多個區域128，光源模組14被劃分為多個區域142，多個區域142的亮度可以各別控制，其中區域126的面積大於區域128的面積。圖3的步驟S10包括取得多個區域126的多個色度分佈資訊以及多個區域142的多個亮度分佈資訊，其中每一個區域126對應一個色度分佈資訊，每一個區域142對應一個亮度分佈資訊，接著透過一第一演算法及一第二演算法分別根據該多個色度分佈資訊及該多個亮度分佈資訊分別計算出色度均勻度資料及亮度均勻度資料。在圖3的步驟S22中，檢測裝置包括利用一第三演算法依據每一個區域128中所有子像素的像素值，計算出多個區域128的多個校正值，其中每一個區域128對應一個校正值，接著依據該多個校正值，決定第三調節因子Z1。本發明所使用的第一演算法、第二演算法及第三演算法為常見的演算法，故不再具體說明其計算過程。在圖7的實施例中，區域126的面積等於區域142的面積，但本發明不限於此，區域126的面積也可以小於或大於區域142的面積。Fig. 7 is a fourth embodiment for explaining steps S10 and S22 in Fig. 3. In Fig. 7, the display panel 12 is divided into a plurality of regions 126 in step S10 and a plurality of regions 128 in step S22, and the light source module 14 is divided into a plurality of regions 142, the brightness of the plurality of regions 142 can be controlled separately, wherein the area of the region 126 is larger than the area of the region 128. Step S10 of FIG3 includes obtaining a plurality of chromaticity distribution information of a plurality of regions 126 and a plurality of luminance distribution information of a plurality of regions 142, wherein each region 126 corresponds to a chromaticity distribution information, and each region 142 corresponds to a luminance distribution information, and then respectively calculating chromaticity uniformity data and luminance uniformity data according to the plurality of chromaticity distribution information and the plurality of luminance distribution information by using a first algorithm and a second algorithm. In step S22 of FIG3, the detection device includes calculating a plurality of correction values of the plurality of regions 128 according to the pixel values of all sub-pixels in each region 128 by using a third algorithm, wherein each region 128 corresponds to a correction value, and then determining a third adjustment factor Z1 according to the plurality of correction values. The first algorithm, the second algorithm and the third algorithm used in the present invention are common algorithms, so their calculation processes are not described in detail. In the embodiment of FIG. 7 , the area of the region 126 is equal to the area of the region 142 , but the present invention is not limited thereto, and the area of the region 126 may also be smaller than or larger than the area of the region 142 .

在圖3的均勻度校正方法中，步驟S22結束後便完成校正，但本發明不限於此。在一實施例中，在步驟S22結束後，可以取得顯示裝置10經第二次校正後的色差值，當該色差值依然大於或等於該預設值時，可以進一步細化顯示面板12的區域來進一步校正。以圖7為例，在步驟S22結束後，如果該色差值依然大於或等於該預設值，則將顯示面板12劃分為多個小區域，每一個小區域的面積小於區域128的面積，並依據每一個小區域中所有子像素的像素值，計算出多個小區域的多個校正值，進而決定第三調節因子Z2。若經第三調節因子Z2校正後的色差值仍大於或等於預設值，可以再進一步細化顯示面板12的區域來進行校正，直至色差值小於預設值時結束校正操作。In the uniformity correction method of FIG. 3 , the correction is completed after step S22 is completed, but the present invention is not limited thereto. In one embodiment, after step S22 is completed, the color difference value of the display device 10 after the second correction can be obtained. When the color difference value is still greater than or equal to the preset value, the area of the display panel 12 can be further refined for further correction. Taking FIG. 7 as an example, after step S22 is completed, if the color difference value is still greater than or equal to the preset value, the display panel 12 is divided into a plurality of small areas, the area of each small area is smaller than the area of the area 128, and based on the pixel values of all sub-pixels in each small area, a plurality of correction values of the plurality of small areas are calculated, and then the third adjustment factor Z2 is determined. If the color difference value after correction by the third adjustment factor Z2 is still greater than or equal to the preset value, the area of the display panel 12 can be further refined for correction until the color difference value is less than the preset value.

以上所述僅是本發明的實施例而已，並非對本發明做任何形式上的限制，雖然本發明已以實施例揭露如上，然而並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明技術方案的範圍內，當可利用上述揭示的技術內容作出些許更動或修飾為等同變化的等效實施例，但凡是未脫離本發明技術方案的內容，依據本發明的技術實質對以上實施例所作的任何簡單修改、等同變化與修飾，均仍屬於本發明技術方案的範圍內。The above is only an embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above by the embodiments, it is not intended to limit the present invention. Any person with ordinary knowledge in the relevant technical field can make some changes or modifications to the technical contents disclosed above into equivalent embodiments within the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

10:顯示裝置 12:顯示面板 122:區域 124:區域 126:區域 128:區域 14:光源模組 142:區域 1422:區域 144:區域 10: Display device 12: Display panel 122: Area 124: Area 126: Area 128: Area 14: Light source module 142: Area 1422: Area 144: Area

圖1顯示傳統的顯示裝置的剖面圖。 圖2顯示圖1中顯示面板及光源模組的上視圖。 圖3顯示本發明顯示裝置的均勻度校正方法的實施例。 圖4是用以說明圖3中步驟S10及S22的第一實施例。 圖5是用以說明圖3中步驟S10及S22的第二實施例。 圖6是用以說明圖3中步驟S10及S22的第三實施例。 圖7是用以說明圖3中步驟S10及S22的第四實施例。 FIG. 1 shows a cross-sectional view of a conventional display device. FIG. 2 shows a top view of the display panel and the light source module in FIG. 1. FIG. 3 shows an embodiment of the uniformity correction method of the display device of the present invention. FIG. 4 is used to illustrate the first embodiment of steps S10 and S22 in FIG. 3. FIG. 5 is used to illustrate the second embodiment of steps S10 and S22 in FIG. 3. FIG. 6 is used to illustrate the third embodiment of steps S10 and S22 in FIG. 3. FIG. 7 is used to illustrate the fourth embodiment of steps S10 and S22 in FIG. 3.

Claims (10)

一種顯示裝置的均勻度校正方法，包括下列步驟： 在該顯示裝置的顯示面板顯示一純色圖案且該顯示裝置的光源模組的亮度為全亮的狀態下，取得該顯示面板的色度均勻度資料以及該光源模組的亮度均勻度資料； 根據該色度均勻度資料產生一第一調節因子，其中該第一調節因子是用以校正該顯示面板的伽瑪參數； 根據該亮度均勻度資料產生一第二調節因子，其中該第二調節因子是用以校正該光源模組的亮度； 根據該第一調節因子及該第二調節因子對該顯示裝置進行第一次校正，並取得該顯示裝置經該第一次校正後的一色差值，其中該第一調節因子及該第二調節因子分別用以對該顯示面板及該光源模組進 行校正； 若該色差值小於一預設值，根據經該第一次校正後的該顯示裝置決定該顯示裝置的校正參數；以及 若該色差值大於或等於該預設值，根據經該第一調節因子校正後的該顯示面板取得一第三調節因子對該顯示裝置進行第二次校正，並根據經該第二次校正後的該顯示裝置決定該顯示裝置的校正參數，其中該第三調節因子是用以校正該顯示面板的畫素資料的參數。 A uniformity correction method for a display device includes the following steps: When the display panel of the display device displays a pure color pattern and the brightness of the light source module of the display device is fully bright, the chromaticity uniformity data of the display panel and the brightness uniformity data of the light source module are obtained; A first adjustment factor is generated according to the chromaticity uniformity data, wherein the first adjustment factor is used to correct the gamma parameter of the display panel; A second adjustment factor is generated according to the brightness uniformity data, wherein the second adjustment factor is used to correct the brightness of the light source module; The display device is first calibrated according to the first adjustment factor and the second adjustment factor, and a color difference value of the display device after the first calibration is obtained, wherein the first adjustment factor and the second adjustment factor are used to calibrate the display panel and the light source module respectively; If the color difference value is less than a preset value, the correction parameter of the display device is determined according to the display device after the first calibration; and If the color difference value is greater than or equal to the preset value, a third adjustment factor is obtained according to the display panel after the first adjustment factor to perform a second calibration on the display device, and the correction parameter of the display device is determined according to the display device after the second calibration, wherein the third adjustment factor is a parameter used to calibrate the pixel data of the display panel. 如請求項1的均勻度校正方法，其中取得該色度均勻度資料的步驟包括： 取得該顯示面板整體的色度分佈資訊；以及 利用一第一演算法根據該色度分佈資訊計算出該色度均勻度資料。 As in the uniformity correction method of claim 1, the step of obtaining the chromaticity uniformity data includes: Obtaining the chromaticity distribution information of the entire display panel; and Using a first algorithm to calculate the chromaticity uniformity data according to the chromaticity distribution information. 如請求項2的均勻度校正方法，其中取得該第三調節因子的步驟包括： 將該顯示面板劃分為多個區域； 利用一第二演算法依據每一個該區域中所有子像素的像素值，計算出該多個區域的多個校正值，其中每一個該區域對應一個校正值；以及 依據該多個校正值，決定該第三調節因子。 In the uniformity correction method of claim 2, the step of obtaining the third adjustment factor includes: Dividing the display panel into multiple regions; Using a second algorithm to calculate multiple correction values of the multiple regions according to the pixel values of all sub-pixels in each of the regions, wherein each of the regions corresponds to a correction value; and Determining the third adjustment factor according to the multiple correction values. 如請求項1的均勻度校正方法，其中取得該亮度均勻度資料的步驟包括： 取得該光源模組整體的亮度分佈資訊；以及 利用一演算法根據該亮度分佈資訊計算出該亮度均勻度資料。 In the uniformity correction method of claim 1, the step of obtaining the brightness uniformity data includes: Obtaining the overall brightness distribution information of the light source module; and Using an algorithm to calculate the brightness uniformity data based on the brightness distribution information. 如請求項1的均勻度校正方法，其中取得該亮度均勻度資料的步驟包括： 將該光源模組劃分為多個區域； 取得該多個區域的多個亮度分佈資訊，其中每一個該區域對應一個該亮度分佈資訊；以及 利用一演算法根據該多個亮度分佈資訊計算出該亮度均勻度資料。 In the uniformity correction method of claim 1, the step of obtaining the brightness uniformity data includes: Dividing the light source module into multiple regions; Obtaining multiple brightness distribution information of the multiple regions, wherein each region corresponds to one brightness distribution information; and Using an algorithm to calculate the brightness uniformity data according to the multiple brightness distribution information. 如請求項5的均勻度校正方法，其中該多個區域的亮度可以各別控制。As in the uniformity correction method of claim 5, the brightness of the multiple areas can be controlled individually. 如請求項1的均勻度校正方法，其中取得該色度均勻度資料的步驟包括： 將該顯示面板劃分為多個第一區域； 取得該多個第一區域的多個色度分佈資訊，其中每一個該第一區域對應一個該色度分佈資訊；以及 利用一第一演算法根據該多個色度分佈資訊計算出該色度均勻度資料。 As in the uniformity correction method of claim 1, the step of obtaining the chromaticity uniformity data includes: Dividing the display panel into a plurality of first regions; Obtaining a plurality of chromaticity distribution information of the plurality of first regions, wherein each of the first regions corresponds to a piece of the chromaticity distribution information; and Using a first algorithm to calculate the chromaticity uniformity data according to the plurality of chromaticity distribution information. 如請求項7的均勻度校正方法，其中取得該亮度均勻度資料的步驟包括： 將該光源模組劃分為多個第二區域； 取得該多個第二區域的多個亮度分佈資訊，其中每一個該第二區域對應一個該亮度分佈資訊；以及 利用一第二演算法根據該多個亮度分佈資訊計算出該亮度均勻度資料。 As in the uniformity correction method of claim 7, the step of obtaining the brightness uniformity data includes: Dividing the light source module into a plurality of second regions; Obtaining a plurality of brightness distribution information of the plurality of second regions, wherein each of the second regions corresponds to a piece of the brightness distribution information; and Using a second algorithm to calculate the brightness uniformity data according to the plurality of brightness distribution information. 如請求項8的均勻度校正方法，其中每一個該第一區域的面積等於每一個該第二區域的面積。A uniformity correction method as claimed in claim 8, wherein the area of each of the first regions is equal to the area of each of the second regions. 如請求項7的均勻度校正方法，其中取得該第三調節因子的步驟包括： 將該顯示面板劃分為多個第二區域，其中每一個該第二區域的面積小於每一個該第一區域的面積； 利用一第二演算法依據每一個該第二區域中所有子像素的像素值，計算出該多個第二區域的多個校正值，其中每一個該第二區域對應一個該校正值；以及 依據該多個校正值，決定該第三調節因子。 As in claim 7, the uniformity correction method, wherein the step of obtaining the third adjustment factor includes: Dividing the display panel into a plurality of second regions, wherein the area of each of the second regions is smaller than the area of each of the first regions; Using a second algorithm to calculate a plurality of correction values of the plurality of second regions according to the pixel values of all sub-pixels in each of the second regions, wherein each of the second regions corresponds to one correction value; and Determining the third adjustment factor according to the plurality of correction values.
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