LCD liquid crystal display is a common display, and it is also one of the more widely used displays in the display industry. Its characteristics are good display effect, simple structure, low energy consumption, high brightness, wide temperature, etc.
One, detection method
LCD liquid crystal display manufacturers inspect the LCD liquid crystal display under the lighting conditions of 20-40W fluorescent lamp, and the sample is about 30cm away from the examiner's eyes for inspection. The inspection direction is a vertical line, front, back, left, and right 45° (with clock 3 o'clock, 6 o'clock, 9 o'clock, 12 o'clock), and the vision of the person who inspects the LCD screen must meet the standard vision of 1.0 or more.
Second, visual inspection
The person who inspects the LCD screen needs to wear an electrostatic wristband, two hands and eight finger cots. On the one hand, it can reduce contamination, and it can also effectively prevent static electricity from causing harm to the LCD liquid crystal display. When the appearance of foreign matter or dotted LCD LCD screen is detected, it is necessary to use film to compare the size.
Three, electrical measurement
LCD LCD electrical test means to test the LCD LCD display through the point, mainly to test the function of the LCD LCD display, the electrical test uses the electrical test frame, the motherboard, the power cord and the single-chip microcomputer. If it is detected that the standard does not match the specification in the electrical test, please refer to the sample for the special inspection specification and engineering change of the product specification.
Four, inspection environment
LCD liquid crystal display detection environment also has certain requirements, general electrical measurement station: illuminance is below 200LUX, appearance station: illuminance is 600LUX-1000LUX, inspection time: 1 second-3 seconds.
