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Detailed lcd liquid crystal display detection method

August 9, 2022

LCD liquid crystal display is a common display screen, and it is also one of the most widely used display screens in the display industry. It is characterized by good display effect, simple structure, low energy consumption, high brightness, and wide temperature. Many industrial terminal products use lcd liquid crystal displays as display terminals, so do we know how lcd liquid crystal displays are detected? Today, Chenghao Optoelectronic will come to tell you about how to test the LCD display?

 

一、Detection method

When lcd liquid crystal display manufacturers test the lcd liquid crystal display, they are inspected under the lighting conditions of 20-40W fluorescent lamp, and the sample is about 30cm away from the inspector's eyes. The inspection direction is a vertical line, 45° front and rear, left and right (3 o'clock, 6 o'clock, 9 o'clock, 12 o'clock on the clock), and the visual acuity requirements of the people who test the LCD screen should reach the standard visual acuity of 1.0 or more.

 

二、Visual estimation

The person who inspects the LCD screen needs to wear an electrostatic wristband and eight finger cots on both hands. On the one hand, it can reduce contamination, and it can also effectively prevent static electricity from harming the LCD display. When foreign objects or dotted lcd liquid crystal displays are detected externally, film should be used to compare the size.

 

三、Electrical measurement

The lcd liquid crystal display electrical test means to test the lcd liquid crystal display through the point, mainly to test the function of the lcd liquid crystal display, electrical testing uses electrical testing racks, motherboards, power cords and single-chip microcomputers. If it is detected in the electrical measurement that the standard does not conform to the specification, the special inspection specifications and engineering changes issued by the product shall prevail. Please refer to the sample for luminance and chromaticity testing.

 

四、 Inspection environment

The lcd liquid crystal display testing environment also has certain requirements. Generally, the electrical measurement station: the illuminance is below 200LUX, the appearance station: the illuminance is 600LUX-1000LUX, and the inspection time: 1 second to 3 seconds.

Introduced the detection method of lcd liquid crystal display from visual inspection, electrical measurement and inspection environment. Chenghao Optoelectronic believes that good products are not necessarily detected, but must start from the source, good raw materials, and good production methods. To ensure the quality of the LCD screen, the final inspection is only for confirmation.

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