What is the mobile phone backlight?
Jul 24, 2021
The backlight is the source of light behind the glass of the mobile phone.
But not only refers to LED, because the current stage of the backlight is generally composed of plastic frame, reflective film, light guide plate, diffusion, lower brightness, upper brightness, light-shielding glue and LED strips. Sometimes, other parts are added according to customer requirements.
Take a look at the picture:
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The screen materials of current mobile phones are mainly divided into TFT, LED, and LCD. The screens of TFT and LCD need to have a screen backlight, because their liquid crystal material itself cannot emit light, so the screen is relatively thick and under the sun The effect is not very good, and it consumes more electricity, but the technology price is lower. The LED itself has a self-luminous liquid crystal, so the screen is relatively thin, the effect is better under the sun, and it saves electricity, but there are fewer manufacturers and higher cost~
I think the little thing you are talking about is not the backlight of the mobile phone, but the light sensor. The backlight of the mobile phone is integrated under the LCD screen. Unless you pry it open, you will not be able to see it.
The backlight of a mobile phone is the light that illuminates the screen of the mobile phone.
Mobile phone backlight refers to the light-emitting principle of mobile phone LCD screens: LCD screens are also called liquid crystal displays. LCD uses two polarized materials with liquid crystal particles in between. When current flows, the liquid crystal particles will be arranged regularly, thus The image is displayed. The liquid crystal particles in the LCD screen cannot self-illuminate and need a backlight to display.
The OLED screen that does not require a backlight is self-luminous, and the thickness can be very thin, and it can also realize a variety of screen forms such as folding screens and curved screens. Before the screen application on the mobile phone, performance testing is indispensable. The application of the shrapnel micro-needle module can play a stable connection. When transmitting large current, it can pass 1-50A current, the connection is stable, the conductivity is strong, and it is adaptable The pitch value is between 0.15mm-0.4mm, no pin stuck, constant needle, stable and reliable performance.
The backlit screen is as big as the screen, at the bottom of the screen.
