1, the small white dot of Huawei's mobile phone appears on the screen with its own touch screen, which actually turns on the touch operation of the display screen.
2. Just turn off the touch operation of the display screen and turn on the setting icon of Huawei mobile phone to enter.
3. In the settings list, click the system option at the bottom to enter.
4. After clicking Enter, you can see the options of the developer options, and click Enter.
5. After entering, you can see that the switch behind the touch operation option is turned on.
6. Click the switch behind this option to turn it off, and turn off the small circle when touching it.
classify
According to the material of the screen, the mainstream screens of smart phones can be divided into two categories. One is LCD (short for liquid crystal display), that is, liquid crystal displays, such as TFT and SLLCD screens.
The other is organic light-emitting diode (short for organic light-emitting diode), that is, organic light-emitting diode, such as AMOLED series screen. The most fundamental difference between LCD and organic light-emitting diode is that organic light-emitting diode is self-luminous, while LCD needs backlight illumination to display.
According to the driving mode of screen display technology, it can be divided into passive matrix and active matrix. The difference between passive matrix and active matrix lies in the driving mode of current.
When an external current passes, the arrangement of liquid crystals will change. After the current stops, if the liquid crystal arrangement does not return to its original position (memory), it is called active matrix. Once the current disappears, it will return to its original position and must be recharged before it can be arranged. This is the so-called passive matrix.