WO2015089875A1 - 一种液晶面板及其图像残留的检测方法 - Google Patents

一种液晶面板及其图像残留的检测方法 Download PDF

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Publication number
WO2015089875A1
WO2015089875A1 PCT/CN2013/090607 CN2013090607W WO2015089875A1 WO 2015089875 A1 WO2015089875 A1 WO 2015089875A1 CN 2013090607 W CN2013090607 W CN 2013090607W WO 2015089875 A1 WO2015089875 A1 WO 2015089875A1
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Prior art keywords
test block
liquid crystal
crystal panel
test
rgb
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PCT/CN2013/090607
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English (en)
French (fr)
Inventor
张岳妍
杨一峰
李建邦
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/440,103 priority Critical patent/US9888236B2/en
Publication of WO2015089875A1 publication Critical patent/WO2015089875A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/02—Diagnosis, testing or measuring for television systems or their details for colour television signals
    • 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
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/69—Arrangements or methods for testing or calibrating a device

Definitions

  • the invention relates to a liquid crystal panel and a detecting method, in particular to a liquid crystal panel and a method for detecting image residual. Background technique
  • Image Sticking (IS, Image Sticking) is a major detection item of the LCD panel process. There are many factors that cause image sticking: The TFT driver part has poor capacitance design, metal residues in the process, and the liquid crystal material has insufficient resistance specifications. At present, the way to judge the image residue is mainly to test the liquid crystal screen after 168 hours of high temperature and high humidity storage test, and then test the liquid crystal screen. It takes 7 days and the test time is long. The product status cannot be monitored in time. The other is to determine whether the liquid crystal material or the metal of the process material does not meet the specifications by detecting the resistance of the object to be tested, thereby causing parasitic capacitance and affecting the rotation of the liquid crystal.
  • the image residue detection is performed, and the time required is long. Once the image residual problem occurs, the liquid crystal panel is disassembled or analyzed to analyze and trace the final cause of the image residue. Waste of production capacity and materials.
  • the invention provides a liquid crystal panel comprising a finished area and a test area, wherein an RGB test block and a blank test block are arranged in the test area, and the RGB test block is superimposed by three colors of red, green and blue photoresist
  • the RGB test block and the liquid crystal panel of the finished area have the same resistance and metal ion concentration, and the RGB test block is subjected to resistance and metal ion concentration detection to determine whether the relevant index of the liquid crystal panel in the finished area is up to standard.
  • the test area is disposed on either side of the finished area, and the test area may further comprise three color test blocks of a red test block, a green test block and a blue test block.
  • the RGB test block, the blank test block, the red test block, the green test block, and the blue test block are arranged in a line.
  • Each test block has a length greater than 5 mm and a width greater than 3 mm.
  • the invention also provides a method for detecting image residue of a liquid crystal panel, which comprises the following steps:
  • Step 1) setting a test area on the liquid crystal panel, and setting an RGB test block and a blank test block on the test area;
  • Step 2) detecting the target parameters of the RGB test block, if the measured target parameter is within the set standard range, Then, it is determined that the image of the liquid crystal panel does not exceed the standard; if the target parameter exceeds the set standard range, it is determined that the image of the liquid crystal panel remains excessive, and the process proceeds to step 3);
  • Step 3 The target parameter of the blank detection block is detected. If the target parameter exceeds the set standard range, it is determined that the liquid crystal substrate material exceeds the standard.
  • the target parameter to be measured is a resistance and a metal ion concentration of the RGB test block and/or the blank test block.
  • three color test blocks of a red test block, a green test block and a blue test block may be added, and a single color detection is used to distinguish which color of the photoresist is confirmed to make the image residue exceed the standard.
  • the target parameters of the red test block, the green test block and the blue test block are detected in turn. If the target parameter of any test block exceeds the set standard range, it is determined that the liquid crystal panel image is excessive, and the display is output in the detection result. Test block detected.
  • the method further comprises the step of: 4) storing the resistance and the metal ion concentration measured by each test block to track the factors affecting the influence of the residual and the quality condition of the liquid crystal panel to be inspected.
  • the resistance of the liquid crystal panel and the metal ion concentration are detected in advance by the sample test block to determine whether the image residual on the liquid crystal panel in the finished area exceeds the standard.
  • the test time of the image residual of the liquid crystal panel is greatly shortened, and the detection result of the image residual on the liquid crystal panel is obtained 7 days earlier, the detection efficiency of the liquid crystal panel is obviously improved, the defective product caused by the image residual problem is reduced, and the liquid crystal panel is improved.
  • the yield rate optimizes the quality of the product and presents a better display.
  • the influencing factors of image residual exceeding the standard can be determined more quickly, and the productivity and material waste caused by the layer of the design experiment can be reduced. It can quickly confirm the parameters and quality status of the LCD panel corresponding to the products on the same glass. For products that cause abnormalities in the detection items, the products can be quickly framed and the shipment of abnormal products is prohibited.
  • FIG. 1 is a schematic structural view of a first embodiment of a liquid crystal panel according to the present invention.
  • FIG. 2 is a schematic structural view of a second embodiment of a liquid crystal panel according to the present invention.
  • the present invention provides an improved liquid crystal panel structure for quickly detecting image sticking (IS, Image Sticking) on the liquid crystal panel, and providing an image residue detection of the liquid crystal panel
  • the method is to perform multiple detection on the liquid crystal panel by taking a sample detection method after the liquid crystal panel is formed (open cell), on the one hand, the detection time can be greatly shortened, the detection efficiency is effectively improved, and the image is not found when the factory sampling is detected.
  • the residual phenomenon affects the quality of the finished product of the LCD screen.
  • the invention provides a liquid crystal panel.
  • the finished product area 1 and the test area 2 are formed.
  • the test area 2 is synchronously formed on either side of the finished product area 1.
  • the test area 2 is provided with a plurality of test blocks. Separate testing of the test block to determine if the liquid crystal panel in the finished area is qualified.
  • the structure of the liquid crystal panel and the image sticking detection method will be described in detail below by means of two embodiments.
  • the test area 2 of the liquid crystal panel is provided with an RGB test block 21a and a blank test block 22a, and the RGB test block 21a is made of red (R), green (G), and blue.
  • the RGB test block 21a is the same as the resistance, metal ion concentration and pixel of the liquid crystal panel of the finished area 1, and the resistance of the liquid crystal panel of the finished area 1 is determined by performing resistance and metal ion concentration detection on the RGB test block 21a. Whether the residue is up to standard.
  • the test zone 2 is located on the right side of the finished zone 1, which is detachable from the finished zone 1 for separate inspection.
  • the GB test block 21a and the blank test block 22a have a length greater than 5 mm and a width greater than 3 mm.
  • a method of performing image sticking detection on the liquid crystal panel of the present embodiment will be specifically described below.
  • a method for detecting image residue of a liquid crystal panel comprising the steps of:
  • Step 1) setting a test area on the liquid crystal panel, and setting an RGB test block 21a and a blank test block 22a on the test area; Step 2) detecting target parameters of the RGB test block, if the measured target parameter is within a set standard range Inside, it is determined that the image panel does not appear to exceed the standard in the liquid crystal panel; if the target parameter exceeds the set standard range, it is determined that the liquid crystal panel image remains excessive, and the process proceeds to step 3);
  • Step 3 The target parameter of the blank detection block is detected. If the target parameter exceeds the set standard range, it is determined that the liquid crystal substrate material exceeds the standard.
  • the test area on the liquid crystal panel is disposed on either side of the finished product area, and can be cut and separated.
  • the test area is provided with a blank test block 22a and an RGB test block 21a formed synchronously with the liquid crystal panel of the finished area.
  • the blank test block 22a is not coated with any photoresist, and exhibits the characteristics of the liquid crystal substrate itself.
  • the RGB test block 21a is made of photoresists of different colors: red (R) photoresist, green (G) photoresist, and blue (B).
  • the photoresist is superposed by coating, which is formed synchronously with the liquid crystal panel of the finished area, and the characteristics of the two are completely the same.
  • the target parameter to be determined is the resistance and metal ion concentration of the RGB test block and/or the blank test block.
  • the test area is separated from the finished area by the resistance and the metal ion concentration of the RGB test block 21a. If the resistance or metal ion concentration of the RGB test block 21a exceeds the set standard range, it is determined that the liquid crystal panel image is excessively exceeded, and In the detection result, the output shows the detected test block, as indicated in the detection result: if the resistance or the metal ion concentration in the RGB test block exceeds the standard, the image residual on the RGB test block exceeds the standard, and the feedback is on the liquid crystal panel of the finished product area. The image remains excessive.
  • the resistance of the blank detection block and the metal ion concentration are also detected. If it exceeds the set standard range, it indicates that the metal ion concentration of the liquid crystal substrate material itself exceeds the standard.
  • the sample test block By setting the sample test block to detect whether the image residual of the liquid crystal panel exceeds the standard, the resistance of the liquid crystal panel and the metal ion concentration can be detected before the liquid crystal panel is finished, to determine that the liquid crystal panel is completed after the liquid crystal panel (open cell) process is completed. Whether the image residual indicator on the standard is up to standard. It is also possible to analyze whether the concentration of metal ions in the liquid crystal substrate material used exceeds the standard by separately testing the blank test block. Therefore, not only can the image residual index of the liquid crystal panel in the finished product area be judged to be up to standard quickly, the detection time is greatly shortened, the defective product is discharged as early as possible, and the yield is improved; and factors affecting image residual exceeding the standard can be analyzed.
  • Embodiment 2 Embodiment 2
  • the test area 2 of the liquid crystal panel is provided with an RGB test block 21b, a blank test block 22b, a red test block (R test block) 23b, and a green test block (G test block) 24b.
  • blue test block (B test block) 25b three monochrome test blocks, the test area 2 is disposed on either side of the finished area 1, the RGB test block 21b, the blank test block 22b, the red test block 23b, The green test block 24b and the blue test block 25b are arranged in a line.
  • Red test block (R test block) 23b is a test block coated with red photoresist
  • green test block (G test block) 24b is a test block coated with green photoresist
  • blue test block (B test block) 25b It is a test block coated with a green photoresist.
  • the test zone 2 is located on the right side of the finished zone 1, and can be cut and separated from the finished zone 1 for separate inspection. Each test block has a length greater than 5 mm and a width greater than 3 mm.
  • a method of performing image sticking detection on the liquid crystal panel of the present embodiment will be specifically described below.
  • a method for detecting image residue of a liquid crystal panel comprising the steps of:
  • Step 1) A test area is set on the liquid crystal panel, and an RGB test block 21b, a blank test block 22b, a red test block (R test block) 23b, a green test block (G test block) 24b, and a blue test are disposed on the test area.
  • Block (B test block) 25b three monochrome test blocks;
  • Step 2) sequentially detecting the target parameters of each test block. If the measured target parameter is within the set standard range, it is determined that no residual image of the liquid crystal panel appears; if the target parameter exceeds the set standard range, the liquid crystal panel image is determined. Excess residue, go to step 3);
  • Step 3 The target parameter of the blank detection block is detected. If the target parameter exceeds the set standard range, it is determined that the liquid crystal substrate material exceeds the standard.
  • the test area on the liquid crystal panel is disposed on either side of the finished product area, and can be cut and separated.
  • the test area is provided with a blank test block 22a and an RGB test block 21a formed synchronously with the liquid crystal panel of the finished area.
  • the blank test block 22a is not coated with any photoresist, and exhibits the characteristics of the liquid crystal substrate itself.
  • the RGB test block 21a is made of photoresists of different colors: red (R) photoresist, green (G) photoresist, and blue (B). Photoresist superimposed coating is formed, which is formed synchronously with the liquid crystal panel of the finished area, and the characteristics of the two are exactly the same.
  • the three monochromatic test blocks respectively exert the influence on the image residual index when the red, green and blue photoresists are separately coated.
  • step 2) the target parameters of the red test block, the green test block, and the blue test block are sequentially detected. If the target parameter of any test block exceeds the set standard range, it is determined that the liquid crystal panel image is excessively exceeded, and The output of the test results shows the detected test block.
  • step 2) the target parameter to be determined is the resistance and metal ion concentration of the RGB test block and/or the blank test block. Further includes the following steps:
  • Step 21 First, the test area is cut and separated from the finished area, and the resistance and metal separation are performed on the RGB test block 21a. If the resistance or metal ion concentration of the RGB test block 21a exceeds the set standard range, it is determined that the liquid crystal panel image is excessive, and the detected test block is outputted in the detection result, as indicated in the detection result. : If the resistance or metal ion concentration in the RGB test block exceeds the standard, the image residue on the RGB test block exceeds the standard, and the image residual on the liquid crystal panel of the feedback finished area exceeds the standard;
  • Step 22 Next, if the image of the RGB test block in the above detection result is excessive, the three test blocks (R test block), green test block (G test block), and blue test block (B test block) are three.
  • the color test block performs resistance and metal ion concentration detection respectively.
  • the monochrome test block affecting the image residual is indicated in the detection result, so that the tester knows Specific factors affecting the image residue, such as the concentration of metal ions in the red test block exceeds the standard, and the metal ion concentration of the red photoresist is correspondingly reduced according to the excess value in the detection result, by performing test blocks for each monochromatic photoresist Separate detection, can clearly measure and define which type of color photoresist affects the image residual exceeding the standard, and adjust the amount of corresponding photoresist according to the excess value to more accurately adjust the photoresist amount of the liquid crystal panel , quickly eliminate influencing factors and optimize product quality.
  • the method further includes the step of: 4) storing the resistance and the metal ion concentration measured by each test block, and storing the test block ID of the liquid crystal panel, so as to pass the test block.
  • the sample is tracked and confirmed to track the factors affecting the residual effect and the quality of the liquid crystal panel to be tested.
  • the resistance of the liquid crystal panel and the metal ion concentration are detected in advance by the sample test block to determine whether the image residual on the liquid crystal panel in the finished area exceeds the standard, and the image of the liquid crystal panel is greatly shortened.
  • the residual test time significantly improves the detection efficiency of the liquid crystal panel, improves the yield of the liquid crystal panel, optimizes the product quality, and presents a higher quality display effect.

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Abstract

提供了一种液晶面板，包括成品区（1）和测试区（2），测试区（2）设置RGB测试块（21b）和空白测试块（22b），RGB测试块（21b）由红色、绿色和蓝色三种颜色的光阻叠加而成，RGB测试块（21b）与成品区（1）的液晶面板的电阻和金属离子浓度相同，通过对RGB测试块（21b）进行电阻和金属离子浓度检测，以判定成品区（1）的液晶面板的相关指标是否达标。还提供了对液晶面板进行图像残留检测的方法。通过小样测试块提前对液晶面板的电阻和金属离子浓度进行检测，以判定成品区（1）的液晶面板上图像残留是否超标，大大缩短了液晶面板的图像残留的测试时间，明显地提高液晶面板的检测效率，提高了液晶面板的良品率，优化了产品质量，呈现优质的显示效果。

Description

说 明 书
一种液晶面板及其图像残留的检测方法 技术领域
本发明涉及一种液晶面板及检测方法，尤其是指一种液晶面板及其图像残留的检测方法。 背景技术
图像残留 （IS， Image Sticking) 是液晶面板制程 （Open cell) 的一个主要检测项目， 引 起图像残留的因素有很多： TFT驱动部分电容设计不良， 制程中金属残留， 液晶材料电阻规 格不够。 目前判断图像残留的方式主要是将液晶屏高温高湿存储测试 168小时后， 再测试液 晶屏的画面效果， 耗时 7天， 测试时间长， 不能及时监测产品状况。 另一种是通过检测待测 物阻值， 确定液晶材料或制程材料金属是否不符合规格而造成寄生电容， 影响液晶的旋转。
液晶面板完成可靠性测试后再进行图像残留检测， 需要的时间较长， 一旦出现图像残留 问题， 一般通过液晶面板拆片解析或设计实验进行层别来分析和追踪图像残留产生的最终原 因， 造成的产能和材料的浪费。
发明内容
基于现有技术的不足， 本发明的主要目的在于提供一种可对图像残留进行快速检测的液 晶面板及其检测方法。
本发明提供了一种液晶面板， 其包括成品区和测试区， 其中， 在测试区设置 RGB测试块 和空白测试块， 所述 RGB测试块由红色、 绿色和蓝色三种颜色的光阻叠加而成， 所述 RGB 测试块与成品区的液晶面板的电阻和金属离子浓度相同，通过对 RGB测试块进行电阻和金属 离子浓度检测， 以判定成品区的液晶面板的相关指标是否达标。
优选地， 所述测试区设置于成品区的任一侧， 所述测试区还可进一步包括红色测试块、 绿色测试块和蓝色测试块三个单色测试块。 所述 RGB测试块、 空白测试块、 红色测试块、 绿 色测试块和蓝色测试块排列成一直线。 各测试块的长度大于 5mm， 宽度大于 3mm。
本发明还提供了一种液晶面板的图像残留检测方法， 其包括以下步骤：
步骤 1 ) 在液晶面板上设置测试区， 在测试区上设置有 RGB测试块和空白测试块； 步骤 2)对 RGB测试块的目标参数进行检测， 若测定的目标参数在设定标准范围内， 则 判定液晶面板未出现图像残留超标； 若目标参数超出设定标准范围， 则判定液晶面板图像残 留超标， 转步骤 3 );
步骤 3 ) 对空白检测块的目标参数进行检测， 若目标参数超出设定标准范围， 则判定液 晶基板材料超标。 其中， 所述待测定的目标参数为 RGB测试块和 /或空白测试块的电阻和金属离子浓度。 优选地， 可增设红色测试块、 绿色测试块和蓝色测试块三个单色测试块， 通过单色检测， 以分辨确认出哪一种颜色的光阻使得图像残留超标。 依次对红色测试块、 绿色测试块和蓝色 测试块的目标参数进行检测， 若任一测试块的目标参数超出设定标准范围， 则判定液晶面板 图像残留超标， 并在检测结果中输出显示所检测的测试块。
优选地， 还可进一步包括步骤 4) 保存各测试块所测定的电阻和金属离子浓度， 以追踪 对影响残留造成影响的因素和待检测液晶面板的质量状况。
与现有技术相比， 通过本发明的液晶面板和影响残留的检测方法， 通过小样测试块提前 对液晶面板的电阻和金属离子浓度进行检测， 以判定成品区的液晶面板上图像残留是否超 标， 大大缩短了液晶面板的图像残留的测试时间， 提前了 7天获得液晶面板上图像残留的检 测结果， 明显地提高液晶面板的检测效率， 减少因图像残留问题造成的不良品， 提高了液晶 面板的良品率， 优化了产品质量， 呈现更为优质的显示效果。 通过单色光阻的检测， 可更快 地判定图像残留超标的影响因素， 减少设计实验进行层别造成的产能和材料的浪费。 可快速 确认同一片玻璃上的产品对应的液晶面板参数和质量状况， 对于检测项目超标而造成异常的 产品， 可迅速框货， 禁止异常品出货。
附图说明
图 1为本发明一种液晶面板的实施例一的结构示意图；
图 2为本发明一种液晶面板的实施例二的结构示意图。
具体实施方式
为了提高液晶面板的检测效率， 本发明提供了一种改进的液晶面板结构， 以便于快速检 测液晶面板上的图像残留 (IS， Image Sticking),并提供了一种对液晶面板的图像残留进行检测 的方法， 以在液晶面板成型 (open cell)后，通过取小样检测的方式，对液晶面板进行多重检测， 一方面可大大缩短检测时间， 有效地提高检测效率， 避免造成出厂抽检时才发现图像残留的 现象， 影响液晶屏出厂成品的质量。
本发明提供了一种液晶面板， 在生产时， 制成成品区 1和测试区 2， 测试区 2同步成型于 成品区 1的任一侧， 测试区 2上设置有若干个测试块， 借助对测试块的单独检测以判定成品 区的液晶面板是否合格达标。 以下通过两个实施例分别详细说明液晶面板的结构和图像残留 检测方法。
实施例一
参照图 1所示， 在本实施例一中， 液晶面板的测试区 2设置有 RGB测试块 21a和空白测 试块 22a， 所述 RGB测试块 21a由红色 （R)、 绿色 （G) 和蓝色 （B) 三种颜色的光阻叠加 而成， 所述 RGB测试块 21a与成品区 1的液晶面板的电阻、 金属离子浓度和像素相同， 通过 对 RGB测试块 21a进行电阻和金属离子浓度检测，以判定成品区 1的液晶面板的图像残留是 否达标。测试区 2设于成品区 1的右侧，其可切割与成品区 1相分离， 以单独进行检测。 GB 测试块 21a和空白测试块 22a的长度大于 5mm， 宽度大于 3mm。
以下具体说明采用对本实施例的液晶面板进行图像残留检测的方法。
一种液晶面板的图像残留检测方法， 其包括以下步骤：
步骤 1 )在液晶面板上设置测试区，在测试区上设置有 RGB测试块 21a和空白测试块 22a; 步骤 2) 对 RGB测试块的目标参数进行检测， 若测定的目标参数在设定标准范围内， 则 判定液晶面板未出现图像残留超标； 若目标参数超出设定标准范围， 则判定液晶面板图像残 留超标， 转步骤 3 );
步骤 3 )对空白检测块的目标参数进行检测， 若目标参数超出设定标准范围， 则判定液晶 基板材料超标。
其中， 在步骤 1 ) 中， 液晶面板上的测试区设置于成品区的任一侧， 可切割分离， 测试区 上设有空白测试块 22a以及与成品区的液晶面板同步成型的 RGB测试块 21a，空白测试块 22a 中未涂布任何光阻，呈现液晶基板本身的特性， RGB测试块 21a由不同颜色的光阻：红色（R) 光阻、 绿色 （G)光阻和蓝色 （B)光阻叠加涂布形成， 其与成品区的液晶面板同步成型， 两 者特性完全相同。
在步骤 2) 中， 所述待测定的目标参数为 RGB测试块和 /或空白测试块的电阻和金属离子 浓度。将测试区与成品区切割分离，通过对 RGB测试块 21a进行电阻和金属离子浓度的测定， 若 RGB测试块 21a的电阻或金属离子浓度超出设定标准范围，则判定液晶面板图像残留超标， 并在检测结果中输出显示所检测的测试块， 如在检测结果中标示出： RGB测试块中的电阻或 金属离子浓度超标， 则该 RGB测试块上的图像残留超标， 反馈成品区的液晶面板上的图像残 留超标。
接下来， 也对空白检测块的电阻和金属离子浓度进行检测， 若超出设定标准范围， 则表 明液晶基板材料本身的金属离子浓度超出标准。
通过设置小样测试块对液晶面板的图像残留是否超标进行检测， 可在液晶面板成品成型 前， 对其进行电阻和金属离子浓度的检测， 以判定在完成液晶面板（open cell)工序后， 液晶 面板上的图像残留指标是否达标。 还可通过对空白测试块进行单独检测， 分析所采用的液晶 基板材料中的金属离子浓度是否超标。 由此， 不仅可快速地判断出成品区的液晶面板的图像 残留指标是否达标， 大大缩短了检测的时间， 尽早地排出不良品， 提高成品率； 并且， 可分 析出影响图像残留超标的因素。 实施例二
参照图 2所示， 在本实施例二中， 液晶面板的测试区 2设置有 RGB测试块 21b、 空白测 试块 22b、 红色测试块 （R测试块） 23b、 绿色测试块 （G测试块） 24b和蓝色测试块 （B测 试块） 25b三个单色测试块， 所述测试区 2设置于成品区 1的任一侧， 所述 RGB测试块 21b、 空白测试块 22b、 红色测试块 23b、 绿色测试块 24b和蓝色测试块 25b排列成一直线。 红色测 试块 （R测试块） 23b为涂布有红色光阻的测试块， 绿色测试块 （G测试块） 24b为涂布有绿 色光阻的测试块， 蓝色测试块 （B测试块） 25b为涂布有绿色光阻的测试块。 测试区 2设于 成品区 1的右侧，其可切割与成品区 1相分离， 以单独进行检测。各测试块的长度大于 5mm， 宽度大于 3mm。
以下具体说明采用对本实施例的液晶面板进行图像残留检测的方法。
一种液晶面板的图像残留检测方法， 其包括以下步骤：
步骤 1 )在液晶面板上设置测试区，在测试区上设置有 RGB测试块 21b、空白测试块 22b、 红色测试块 （R测试块） 23b、 绿色测试块 （G测试块） 24b和蓝色测试块 （B测试块） 25b 三个单色测试块；
步骤 2)依次对各测试块的目标参数进行检测， 若测定的目标参数在设定标准范围内， 则 判定液晶面板未出现图像残留超标； 若目标参数超出设定标准范围， 则判定液晶面板图像残 留超标， 转步骤 3 );
步骤 3 )对空白检测块的目标参数进行检测， 若目标参数超出设定标准范围， 则判定液晶 基板材料超标。
其中， 在步骤 1 ) 中， 液晶面板上的测试区设置于成品区的任一侧， 可切割分离， 测试区 上设有空白测试块 22a以及与成品区的液晶面板同步成型的 RGB测试块 21a，空白测试块 22a 中未涂布任何光阻，呈现液晶基板本身的特性， RGB测试块 21a由不同颜色的光阻：红色（R) 光阻、 绿色 （G)光阻和蓝色 （B)光阻叠加涂布形成， 其与成品区的液晶面板同步成型， 两 者特性完全相同， 三个单色测试块则分别呈现单独涂布红色、 绿色和蓝色光阻时对图像残留 指标的影响。
在步骤 2) 中， 依次对红色测试块、 绿色测试块和蓝色测试块的目标参数进行检测， 若任 一测试块的目标参数超出设定标准范围， 则判定液晶面板图像残留超标， 并在检测结果中输 出显示所检测的测试块。
在步骤 2) 中， 所述待测定的目标参数为 RGB测试块和 /或空白测试块的电阻和金属离子 浓度。 进一步包括以下步骤：
步骤 21 )首先， 将测试区与成品区切割分离， 通过对 RGB测试块 21a进行电阻和金属离 子浓度的测定， 若 RGB测试块 21a的电阻或金属离子浓度超出设定标准范围， 则判定液晶面 板图像残留超标， 并在检测结果中输出显示所检测的测试块， 如在检测结果中标示出： RGB 测试块中的电阻或金属离子浓度超标， 则该 RGB测试块上的图像残留超标， 反馈成品区的液 晶面板上的图像残留超标；
步骤 22)接着， 若上述检测结果中 RGB测试块的图像残留超标， 则对红色测试块（R测 试块）、 绿色测试块 （G测试块）和蓝色测试块（B测试块）三个单色测试块分别进行电阻和 金属离子浓度检测， 若任一单色测试块中的电阻或金属离子浓度超标， 则在检测结果中标示 出， 影响图像残留的单色测试块， 以使检测者获知对图像残留产生影响的具体因素， 如红色 测试块中的金属离子浓度超标， 根据检测结果中的超量值对应地降低红色光阻的金属离子浓 度， 通过对各个单色光阻的测试块进行分别检测， 可清晰量测并界定究竟是哪一种颜色光阻 的用量影响图像残留超标， 并根据超量值对应地调整相应光阻的用量， 以更为精确地调整液 晶面板的光阻用量， 快速排除影响因素， 优化产品质量。
在本发明的又一个优选实施例中， 还可进一步包括步骤 4)保存各测试块所测定的电阻和 金属离子浓度，通过对液晶面板的测试块 ID进行建档存储， 以便于通过对测试块小样进行追 踪确认， 以追踪对影响残留造成影响的因素和待检测液晶面板的质量状况。
通过本发明的液晶面板和影响残留的检测方法， 通过小样测试块提前对液晶面板的电阻 和金属离子浓度进行检测， 以判定成品区的液晶面板上图像残留是否超标， 大大缩短了液晶 面板的图像残留的测试时间， 明显地提高液晶面板的检测效率， 提高了液晶面板的良品率， 优化了产品质量， 呈现更为优质的显示效果。

Claims

权 利 要 求 书
、 一种液晶面板， 其包括成品区和测试区， 其中： 在测试区设置 RGB测试块、 空白测试块和 三个单色测试块： 红色测试块、 绿色测试块和蓝色测试块， 所述 RGB测试块由红色、 绿色 和蓝色三种颜色的光阻叠加而成， 所述 RGB测试块与成品区的液晶面板的电阻和金属离子 浓度相同， 通过对 RGB测试块进行电阻和金属离子浓度检测， 以判定成品区的液晶面板的 相关指标是否达标。
、 根据权利要求 1所述的液晶面板， 其中： 所述 RGB测试块、 空白测试块、 红色测试块、 绿 色测试块和蓝色测试块的长度大于 5mm， 宽度大于 3mm。
、 根据权利要求 1所述的液晶面板， 其中： 所述测试区设置于成品区的任一侧； 所述 RGB测 试块、 空白测试块、 红色测试块、 绿色测试块和蓝色测试块排列成一直线。
、 一种液晶面板的图像残留检测方法， 其中包括以下步骤：
步骤 1 )在液晶面板上设置测试区， 在测试区上设置有 RGB测试块、空白测试块和三个单色 测试块： 红色测试块、 绿色测试块和蓝色测试块；
步骤 2)对 RGB测试块、空白测试块和三个单色测试块的电阻和金属离子浓度的目标参数进 行检测， 若测定的目标参数在设定标准范围内， 则判定液晶面板未出现图像残留超标； 若目 标参数超出设定标准范围， 则判定液晶面板图像残留超标， 转步骤 3 );
步骤 3 ) 对空白检测块的目标参数进行检测， 若目标参数超出设定标准范围， 则判定液晶基 板材料超标。
、 根据权利要求 4所述的液晶面板的图像残留检测方法， 其中： 在步骤 2) 中， 依次对红色测 试块、 绿色测试块和蓝色测试块的目标参数进行检测， 若任一测试块的目标参数超出设定标 准范围， 则判定液晶面板图像残留超标， 并在检测结果中输出显示所检测的测试块。
、 根据权利要求 5所述的液晶面板的图像残留检测方法， 其中： 进一步包括步骤 4) 保 存 各测试块所测定的电阻和金属离子浓度，以追踪对影响残留造成影响的因素和待检测液晶面 板的质量状况。
、 一种液晶面板， 其包括成品区和测试区， 其中： 在测试区设置 RGB测试块和空白测试块， 所述 RGB测试块由红色、 绿色和蓝色三种颜色的光阻叠加而成， 所述 RGB测试块与成品 区的液晶面板的电阻和金属离子浓度相同， 通过对 RGB测试块进行电阻和金属离子浓度检 测， 以判定成品区的液晶面板的相关指标是否达标。
、 根据权利要求 7所述的液晶面板， 其中： 所述测试区进一步包括红色测试块、 绿色测试块 和蓝色测试块三个单色测试块。
、 根据权利要求 7所述的液晶面板， 其中： 所述 RGB测试块、 空白测试块、 红色测试块、 绿 色测试块和蓝色测试块的长度大于 5mm， 宽度大于 3mm。
、 根据权利要求 7所述的液晶面板， 其中： 所述测试区设置于成品区的任一侧； 所述 RGB测 试块、 空白测试块、 红色测试块、 绿色测试块和蓝色测试块排列成一直线。
、 一种液晶面板的图像残留检测方法， 其中包括以下步骤：
步骤 1 ) 在液晶面板上设置测试区， 在测试区上设置有 RGB测试块和空白测试块； 步骤 2)对 RGB测试块的目标参数进行检测， 若测定的目标参数在设定标准范围内， 则判定 液晶面板未出现图像残留超标； 若目标参数超出设定标准范围， 则判定液晶面板图像残留超 标， 转步骤 3);
步骤 3 ) 对空白检测块的目标参数进行检测， 若目标参数超出设定标准范围， 则判定液晶基 板材料超标。
、 根据权利要求 11所述的液晶面板的图像残留检测方法， 其中： 所述待测定的目标参 数为 RGB测试块和 /或空白测试块的电阻和金属离子浓度。
、 根据权利要求 11所述的液晶面板的图像残留检测方法， 其中： 在步骤 1 ) 中， 增设 红色测试块、 绿色测试块和蓝色测试块三个单色测试块。
、 根据权利要求 12所述的液晶面板的图像残留检测方法， 其中： 在步骤 2) 中， 依次 对红色测试块、 绿色测试块和蓝色测试块的目标参数进行检测， 若任一测试块的目标参数 超出设定标准范围， 则判定液晶面板图像残留超标， 并在检测结果中输出显示所检测的测 试块。
、 根据权利要求 12所述的液晶面板的图像残留检测方法， 其中： 进一步包括步骤 4) 保存各 测试块所测定的电阻和金属离子浓度， 以追踪对影响残留造成影响的因素和待检测液晶面 板的质量状况。
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