Shenzhen Anycubic Technology Co., Ltd.

Shenzhen Skyworth-rgb Electronic Co., Ltd.

Shenzhen Chuangwei-rgb Electronic Co., Ltd.

Yawei Li

Xiangfeng Hu

Deqiang Huang

Qiaofu Pan

Jianhua Zhou

Xin Ouyang

Xiaojie Bao

Lu Ouyang

Wenxiang Yang

Disclosed are a local dimming drive circuit, a local dimming drive method, a local dimming drive system and an electronic equipment. The local dimming drive circuit includes: a dimming control circuit and a constant current drive circuit; the input end of the dimming control circuit is connected to the mainboard, and the output end of the dimming control circuit is connected to the input end of the constant current drive circuit, and the output end of the constant current drive circuit is connected to the backlight panel; the mainboard is configured to provide the first backlight brightness data and the first vertical synchronization signal; the dimming control circuit is configured to obtain the second backlight brightness data according to the first backlight brightness data, and output the second backlight brightness data at the refresh rate of the first vertical synchronization signal.

Local dimming drive circuit, method, system and electronic equipment

3D printer frame

Air purifier

3D printer

Disclosed are a power supply control circuit and a display device. An output terminal of the power factor correction circuit is connected to the resonance circuit; a first output terminal of the resonance circuit is connected to the backlight module through the first rectification filter circuit, and a second output terminal of the resonance circuit is connected to the control circuit board and the communication circuit through the second rectification filter circuit; a third output terminal of the resonance circuit is connected to the control system and the communication circuit; the control circuit board is connected to the control system through the communication circuit; a first signal output terminal of the control system is connected to the power factor correction circuit; and a second signal output terminal of the control system is connected to the resonance circuit.

Power supply control circuit and display device

Backlight constant current driver board comprises boost circuit, constant current control circuit, switchover switch circuit, and light strip socket, connects to backlight light strip via light strip socket. Boost circuit boosts input voltage before outputting output voltage and transmits via light strip socket as power supply to backlight light strip. Switchover switch circuit controls, according to PWM signal and power supply voltage, connection or disconnection of current loop between backlight light strip and ground. Constant current control circuit monitors and keeps constant current magnitude of backlight light strip in switchover switch circuit. By switchover switch circuit, during system standby, formation of current loop between backlight light strip and ground is prevented so backlight light strip does not emit light, thus solving problems of screen emitting dim lights when existing LCD television standby or constant current drive control chip not working.

Backlight constant current driver board and liquid crystal display television

Washing and curing machine

Growing community of inventors

Shenzhen, China

Yawei Li