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Based on the dimming theory of OLED screen and Liquid crystal display screen, both displays might be distinguished
In order for the consumer in order to exhibit the material of your mobile phone under diverse lighting situations, the display screen should alter the brightness appropriately,phone lcd ， and this method needs "dimming"
The Digital display adopts the DC dimming strategy, the key is fairly easy, and the lighting from the display is modified by shifting the existing or voltage
The OLED monitor modifications the brightness of the display by PWM dimming, and adjustments the lumination of the display screen by changing on and off. The PWM dimming display screen fails to glow continuously like DC dimming, but turns on and off alternately. When the consistency is fast ample, about 250 occasions per next, the human eye alone cannot explain to, and the telephone is definitely on.
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How to differentiate between OLED display screen and Liquid crystal display?
Why can't you turn off the lamps and play with your telephone?
Daily maintenance method of cell phone display
1. Patch
Namely surface mounting technology, which is a more traditional installation method. The advantage is high reliability, but the disadvantage is large size and high cost, which limits the miniaturization of LCM.lcd module，
Two, COB
That is, the chip is attached to the PCB, because the IC manufacturer is in LCD control and related.
Three, TAB
Packaging (Tape Carrier Package) IC is fixed on LCD and PCB with anisotropic conductive adhesive. This installation method can reduce the weight, volume, installation convenience and reliability of the LCM!
Four, COG Chip On Glass
The chip is directly bonded to the glass. This installation method can greatly reduce the volume of the entire LCD module, and is easy to mass produce, and is suitable for LCDs used in consumer electronic products.
Five, COF
The chip is directly mounted on the flexible PCB. This connection method is highly integrated, and peripheral components can be mounted on the flexible PCB together with the IC. This is an emerging technology entering the trial production stage.
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What are the classification and applications of LCD modules
1. Minimize the possibility of direct exposure of the screen to strong light to prevent the screen from being irradiated by strong light, resulting in excessively high temperature and accelerated aging;
2. The LCD screen is one of the most vulnerable parts.3.5 inch lcd display， It is best not to point to the screen with sharp objects such as pens and keys;
3. Keep the voltage and power supply normal;
4. When using, be sure to avoid long-time booting and work, let alone display the same screen for a long time, so that it is easier to accelerate the aging of the LCD screen and promote the formation of dead pixels.
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What is the working principle of liquid crystal display
