阅读说明：本技术 快速检测液晶显示屏液晶泄漏缺陷的方法 (Method for rapidly detecting liquid crystal leakage defect of liquid crystal display screen ) 是由 钟伟 于 2020-12-07 设计创作，主要内容包括：本发明公开一种快速检测液晶显示屏液晶泄漏缺陷的方法,包括以下步骤：步骤一、选择数台画面品质合格的液晶显示屏作为测试样机；步骤二、将所述测试样机置于恒温箱中,各测试样机之间间隔放置,并使各测试样机均处于工作状态；步骤三、设置不同的环境参数,对所述测试样机进行多次且连续的冲击测试,各次所述的冲击测试均为在三组环境参数下进行多次反复测试,步骤四、将上述经连续冲击测试的测试样机取出,在常温下静置后再进行画面品质检测,并根据检测结果记录测试样机中出现的液晶泄露异常。利用本方法能够有效的检测出液晶泄漏等缺陷,检测更方便。(The invention discloses a method for rapidly detecting liquid crystal leakage defects of a liquid crystal display screen, which comprises the following steps: selecting a plurality of liquid crystal display screens with qualified picture quality as a test prototype; placing the test prototypes in a constant temperature box, and placing the test prototypes at intervals to enable the test prototypes to be in a working state; step three, setting different environmental parameters, carrying out multiple and continuous impact tests on the test prototype, wherein each time of the impact tests are carried out multiple repeated tests under three groups of environmental parameters, and step four, taking out the test prototype subjected to the continuous impact tests, carrying out picture quality detection after standing at normal temperature, and recording the abnormal liquid crystal leakage in the test prototype according to the detection result. The method can effectively detect the defects of liquid crystal leakage and the like, and the detection is more convenient.)

1. A method for rapidly detecting liquid crystal leakage defects of a liquid crystal display screen is characterized by comprising the following steps: the method comprises the following steps:

selecting a plurality of liquid crystal display screens with qualified picture quality as a test prototype;

placing the test prototypes in a constant temperature box, and placing the test prototypes at intervals to enable the test prototypes to be in a working state;

setting different environmental parameters, and carrying out multiple and continuous impact tests on the test prototype, wherein each time of the impact tests is carried out repeatedly under three groups of environmental parameters, and the environmental parameters comprise temperature, relative humidity and time;

taking out the test sample machine subjected to the continuous impact test, standing at normal temperature, then carrying out picture quality detection, and recording liquid crystal leakage abnormity appearing in the test sample machine according to a detection result;

and fifthly, carrying out design change on the test prototype with abnormal record, and repeating the test steps after the change until no abnormal condition appears.

2. The method of claim 1, wherein the test prototype has an ambient illumination of 180 ± 10Lux when performing the image quality inspection.

3. The method for rapidly detecting a liquid crystal leakage defect of a liquid crystal display panel according to claim 1, wherein the interval between the test prototypes is more than 30 cm.

4. The method for rapidly detecting a liquid crystal leakage defect of a liquid crystal display panel according to claim 1, wherein the repetition of the test is at least three times.

5. The method for rapidly detecting the liquid crystal leakage defect of the liquid crystal display screen according to claim 1 or 4, wherein the impact test is performed three times, wherein the values of the temperature, the relative humidity and the time range in the three groups of environmental parameters during the first impact test are respectively as follows: 45-50 ℃, 90-95% RH, 2-3 h; 15-20 ℃, 90-95% RH, 2-3 h; 30-40 ℃, 90-95% RH and 2-3 h.

6. The method according to claim 5, wherein the temperature, relative humidity and time range values of the two sets of environmental parameters during the second impact test are respectively: 40-45 ℃, 20-25% RH and 2-3 h; the temperature is minus 5 ℃ to 0 ℃, 90 percent RH to 95 percent RH and the time is 2h to 3 h; the temperature is minus 10 ℃ to minus 5 ℃, 50 percent RH to 75 percent RH and the time is 2 to 3 hours.

7. The method according to claim 6, wherein the temperature, relative humidity and time range values of the two sets of environmental parameters during the third impact test are respectively: 50-55 ℃, 80-85% RH, 2-3 h; 10 ℃ below zero to 5 ℃, 80 percent RH to 85 percent RH, 2h to 3 h; 0-20 ℃, 80-85% RH and 2-3 h.

8. The method of claim 1, wherein the test specimen after the continuous impact test has a room temperature standing time of at least 3 hours before the inspection of the picture quality.

Technical Field

The invention belongs to the technical field of liquid crystal display screens, and particularly relates to a method for rapidly detecting liquid crystal leakage defects of a liquid crystal display screen.

Background

With the development of the technology, the production efficiency of products is continuously improved, and the quality requirement is higher and higher. However, for some industries, the human eyes are required to be used for observation and determination, so that the bodies of workers are easily injured, if the machine vision can be used for replacing the human eyes for detection, the detection is safe, the precision is high, the speed is high, and the collected pictures can be repeatedly observed. Liquid crystal is a high molecular material, consisting of long rod-like molecules. In the natural state, the axes of these rod-like molecules are approximately parallel. The basic principle of liquid crystal applied to display technology is that liquid crystal material is filled between two parallel plates, and the arrangement state of internal molecules of liquid crystal material is changed by means of voltage so as to attain the goal of shading light and transmitting light, and can display image with different depth and uniform arrangement. And the color image can be displayed only by adding a filter layer with three-component color between the two flat plates. However, the conventional method for detecting liquid crystal leakage of the liquid crystal display screen is performed under the conditions of constant temperature and constant humidity, and cannot provide the working environment where the liquid crystal display screen is located in practical use, so that whether the liquid crystal display screen has the potential possibility of liquid crystal leakage cannot be quickly detected.

Disclosure of Invention

The invention aims to provide a method for rapidly detecting liquid crystal leakage defects of a liquid crystal display screen, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a method for rapidly detecting liquid crystal leakage defects of a liquid crystal display screen comprises the following steps:

selecting a plurality of liquid crystal display screens with qualified picture quality as a test prototype;

placing the test prototypes in a constant temperature box, and placing the test prototypes at intervals to enable the test prototypes to be in a working state;

setting different environmental parameters, and carrying out multiple and continuous impact tests on the test prototype, wherein each time of the impact tests is carried out repeatedly under three groups of environmental parameters, and the environmental parameters comprise temperature, relative humidity and time;

taking out the test sample machine subjected to the continuous impact test, standing at normal temperature, then carrying out picture quality detection, and recording liquid crystal leakage abnormity appearing in the test sample machine according to a detection result;

and fifthly, carrying out design change on the test prototype with abnormal record, and repeating the test steps after the change until no abnormal condition appears.

Preferably, the environment illumination of the test prototype is 180 +/-10 Lux when the test prototype is used for picture quality detection.

Preferably, the spacing between the test prototypes is greater than 30 cm.

Preferably, the repeated tests are at least three times.

Preferably, the impact test is performed three times, wherein the temperature, the relative humidity and the time range value in the three groups of environmental parameters during the first impact test are respectively as follows: 45-50 ℃, 90-95% RH, 2-3 h; 15-20 ℃, 90-95% RH, 2-3 h; 30-40 ℃, 90-95% RH, 2-3 h

Preferably, the temperature, the relative humidity and the time range value in the two groups of environmental parameters during the second impact test are respectively as follows: 40-45 ℃, 20-25% RH and 2-3 h; the temperature is minus 5 ℃ to 0 ℃, 90 percent RH to 95 percent RH and the time is 2h to 3 h; the temperature is between 10 ℃ below zero and 5 ℃ below zero, the RH is 50 percent to 75 percent, and the time is 2 to 3 hours

Preferably, the temperature, relative humidity and time range values in the two sets of environmental parameters during the third impact test are respectively as follows: 50-55 ℃, 80-85% RH, 2-3 h; 10 ℃ below zero to 5 ℃, 80 percent RH to 85 percent RH, 2h to 3 h; 0-20 ℃, 80-85% RH, 2-3 h

Preferably, the test prototype after the continuous impact test is kept still for at least 3h at normal temperature before the picture quality detection.

The invention has the beneficial effects that:

the method can effectively detect the defects of liquid crystal leakage and the like, and the detection is more convenient.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a method for rapidly detecting liquid crystal leakage defects of a liquid crystal display screen, which comprises the following steps: selecting a plurality of liquid crystal display screens with qualified picture quality as a test prototype; placing the test prototypes in a constant temperature box, and placing the test prototypes at intervals to enable the test prototypes to be in a working state; setting different environmental parameters, and carrying out multiple and continuous impact tests on the test prototype, wherein each time of the impact tests is carried out repeatedly under three groups of environmental parameters, and the environmental parameters comprise temperature, relative humidity and time; taking out the test sample machine subjected to the continuous impact test, standing at normal temperature, then carrying out picture quality detection, and recording liquid crystal leakage abnormity appearing in the test sample machine according to a detection result; and fifthly, carrying out design change on the test prototype with abnormal record, and repeating the test steps after the change until no abnormal condition appears.

Preferably, the environment illumination of the test prototype is 180 +/-10 Lux when the test prototype is used for picture quality detection.

Preferably, the spacing between the test prototypes is greater than 30 cm.

Preferably, the repeated tests are at least three times.

Preferably, the temperature, the relative humidity and the time range value in the three groups of environmental parameters during the first impact test are respectively as follows: 45-50 ℃, 90-95% RH, 2-3 h; 15-20 ℃, 90-95% RH, 2-3 h; 30-40 ℃, 90-95% RH, 2-3 h

Preferably, the temperature, the relative humidity and the time range value in the three groups of environmental parameters during the second impact test are respectively as follows: 40-45 ℃, 20-25% RH and 2-3 h; the temperature is minus 5 ℃ to 0 ℃, 90 percent RH to 95 percent RH and the time is 2h to 3 h; the temperature is between 10 ℃ below zero and 5 ℃ below zero, the RH is 50 percent to 75 percent, and the time is 2 to 3 hours

Preferably, the temperature, the relative humidity and the time range value in the three groups of environmental parameters during the third impact test are respectively as follows: 50-55 ℃, 80-85% RH, 2-3 h; 10 ℃ below zero to 5 ℃, 80 percent RH to 85 percent RH, 2h to 3 h; 0-20 ℃, 80-85% RH, 2-3 h

Preferably, the test prototype after the continuous impact test is kept still for at least 3h at normal temperature before the picture quality detection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.