First of all, the inspection standards of liquid crystal have not yet involved the national standard parameters, and they are all based on the standards of the liquid crystal industry to meet the basic requirements of customers. There are more A plus aerospace and military{{0}}grade products, which have relatively high quality requirements and higher costs. A-industrial-grade products are more numerous, such as power systems, automotive instruments, electronic instruments, and medical equipment. B. There are many civilian products, such as air conditioner remote control, POS machine, washing machine, electric car, and higher requirements for cost control. According to the quality requirements of different customers, the inspection standards will be different accordingly. Environmental requirements: 2 40W fluorescent lamps should be used for the inspection of LCD finished products, and the inspectors should be 1 meter away from the lamps. The ambient temperature is controlled at 10-32 degree , and the humidity is controlled at 60±15 percent RH. Inspection method: 1. When testing, the naked eye should be 30cm away from the LCD product. The product should be carried out under its correct display mode and driving conditions; 2. 2. Full-transparent LCD screen products need to be backlit to check the appearance under normal conditions; 3. 3. The appearance of LCM light guide plate products must be inspected once in the lighted state; 4. All COG products must be checked for telecommunications after patching. The test frequency is 80HZ, and the voltage needs to be adjusted within 0.6V on the basis of Vop after pressing 5 on the tester; 5. TN products are inspected under scanning status: Leak, high current, and other telecommunication items are inspected in full display status; inspection level: A, B, and C appearing in the standard are the inspection levels of the product, A is the most stringent, and B is the second , C-level is looser. Please refer to the "Product Inspection Specifications" of the Technical Department for the applicable product inspection levels for different products. Common appearance defects are: black spots, white spots, dirt, scratches, internal scratches, pinholes, poor patch, external scratches, breakage, glass residue, poor size, poor sealing, poor positioning, and inside the box Air bubbles, poor frame glue, rainbow (but within the area), poor background color, poor protective layer, poor PIN installation, poor screen printing, poor FPC, poor TCP, poor soldering, dislocation of resistors and capacitors, etc. Common functional defects include: Leak, Short, excessive current, poor response, viewing angle defects, multiple displays, incomplete display, fat and thin characters, uneven display color, black dots, white dots (within the visible area) , Backlight is not bright, dead light, etc. The following is a simple list of standards for stains:
Sve sirovine LCD modula imaju rok trajanja, zbog čega se javlja pojava neujednačenih cijena LCD ekrana na tržištu. Na primjer, životni vijek čipa LCD modula je 80,000 sati, ali morate obratiti pažnju na ovo 8 Deset hiljada sati znači da nakon što IC napusti tvornicu, mora biti u roku od godinu dana od proizvodnje datum kako bi se osiguralo da dostigne svoj životni vijek. Ako nije za njegov životni vijek, to će biti pogođeno.
Gore navedeni su osnovni standardi inspekcije naše LCD industrije. U svakodnevnim diskusijama, moramo dobro komunicirati između dvije strane, što će donijeti neugodnosti za naš daljnji-rad! !
LCD ima kompletan sistem kvaliteta. Svaki LCD ekran će proći rigorozno starenje od 72 sata pre nego što izađe iz fabrike. Kompanija je opremljena udarnom kutijom na visokim i niskim temperaturama, elektrostatičkim testerom, ispitnom kutijom za slani sprej, testerom pada, stolom za visokofrekventne vibracije i uređajem za udar napona. Sačekajte seriju alata za testiranje, budite sigurni da ćete ih koristiti!
