专利检索 ap:("ANAX TECHNOLOGY CORP.") AND inv:"Shih-Yu Hsieh" 第 1 页

1.

发明授权
Backlight dimming method and control circuit for variable refresh rate display, and display apparatus using same 有权

公开(公告)号：US11443704B1

公开(公告)日：2022-09-13

申请号：US17487591

申请日：2021-09-28

申请人： ANAX TECHNOLOGY CORP.

发明人： Sung-Wei Chiang , Shih-Yu Hsieh , Hung-Cheng Chang

IPC分类号： G09G3/34 , G09G5/10

摘要： A backlight dimming method for backlighting an LCD panel having a variable refresh rate with an LED module, the variable refresh rate having a maximum refresh rate, the LED module having at least one LED sub-zone, the LED sub-zone including a plurality of LEDs, and the method including: using a controller to generate a secondary synchronizing signal having a frequency higher than the maximum refresh rate; and using the controller to update dimming values for the at least one LED sub-zone at one or more pulses of the secondary synchronizing signal with current dimming data after the controller has received the current dimming data from a scaler.