Doc. # 1-0003018
Date Updated 10-22-2007 Date Created 07-27-2000
Document Type Knowledge Base Related OS
Related Product
What kind ENABKL of function is it?
Solution:
There are more information about the LCD control signal, for your reference. SHFCLK----shift clock or data clock. pixel clock for flat panel data.The signal name on TFT LCD panel side could be NCLK,CLK,CK,CX, or DCLK. FLM----first line mark or vertical sync. Flat panel equivalent of VSYNC. The signal name on TFT LCD panel side is Vsync. LP----latch pulse or horizontal sync. Flat panel equivalent of HSYNC. The signal name on TFT LCD panel sideis Hsync. M----M signal as display enable or display timing. The signal name on TFT LCD panel side could be ENAB,DE or DTMG. ENABKL----Enable backlight. Backlight is the light source of LCD panel and usually integrated in LCD.An LCD backlight inverter is required to drive backlight. Most inverter need +12V as power supply. An example of TFT LCD inverter input connector is as follows: Pin numberFunction pin1:Vin pin2:GND pin3:On/Off control pin4:VR pin5:GND Note: Vin is connected +12V power supply. On/Off control needs to be connected to ENABKL to control backlight ON/OFF. VR is the brightness control input. User can connect a potentiometer between VR and GND to control brightness of backlight, or short VR to GND for maximum brightness. The value of potentiometer can be selected according to the control sensitivity that user needs. The recommended value is from 1 ~ 5 kohm. The output signal of inverter is high voltage AC source.