公开(公告)号：US20220406265A1

公开(公告)日：2022-12-22

申请号：US17255009

申请日：2020-12-18

Applicant: TCL China Star Optoelectronics Technology Co., Ltd.

Inventor： Jinfeng LIU ,  Xuebing ZHOU

IPC: G09G3/34

Abstract: A liquid crystal display backlight module controlling method and a controlling device thereof disclosed in the present invention includes a programmable logic gate array board extracting backlight information from an image signal. Calculation of local dimming is performed by the programmable logic gate array board, a calculation buffer for local dimming calculation is sufficient, which can increase liquid crystal display backlight divisions. Furthermore, the present invention employs a row signal and a column signal to control and switch on light emitting diodes in the backlight light board, which can achieve the cost lowering effect.

公开(公告)号：US20240274096A1

公开(公告)日：2024-08-15

申请号：US17600435

申请日：2021-08-10

Applicant: TCL China Star Optoelectronics Technology Co., Ltd.

Inventor： Guangxing XIAO ,  Yu WU ,  Tao HE ,  Xuebing ZHOU ,  Xinghai ZHAO

IPC: G09G3/34 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3426 ,  G09G3/2092 ,  G09G3/36 ,  G09G2320/0233 ,  G09G2320/0257

Abstract: An LCD device includes: a display panel, one display frame of the display panel corresponds to multiple scan cycles of a backlight source, a light-emitting diode array of an arbitrary one of backlight partitions has a first brightness and a second brightness under controlling of a timer control register in the scan cycles, wherein the first brightness is lower than the second brightness, and the timer control register controls the light-emitting diode array of at least one of the backlight partitions to have the first brightness in each of the scan cycles.