Detailed detection method of LCD liquid crystal display
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 and wide temperature. Many industry terminal products use LCD LCD screens as display terminals. Do we know how LCD LCD screens are tested? Today, the editor will talk to you about how to detect LCD screens?
1. Detection method
When the LCD LCD display manufacturer is testing the LCD LCD display, it is inspected under the lighting condition of 20-40W fluorescent lamp, and the sample is about 30cm away from the examiner's eyes. The inspection direction is a vertical line, front and rear, left and right 45° (with clock at 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.
2. Visual inspection
The person who inspects the LCD screen should 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 screen. When the appearance of foreign matter or dotted LCD screen is detected, it is necessary to use film to compare the size.
Three, electrical test
The electrical test of lcd liquid crystal display means to test the lcd liquid crystal display through the point, mainly to test the function of the lcd liquid crystal 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 is not in conformity with the specification in the electrical test, please refer to the sample for the special inspection specifications and engineering changes issued by the product specification.
Four, inspection environment
LCD LCD screen testing environment also has certain requirements. General electrical testing station: illuminance below 200LUX, appearance station: illuminance 600LUX-1000LUX, inspection time: 1 second-3 seconds.