US 12,112,712 B2
Backlight driving board, backlight module, display apparatus and method for adjusting brightness and color temperature thereof
Lijin Zhao, Beijing (CN); Yu Zhang, Beijing (CN); Shixin Geng, Beijing (CN); Guangyun Tong, Beijing (CN); Zhuolong Li, Beijing (CN); Miao Liu, Beijing (CN); Huiyan Li, Beijing (CN); and Fan Yang, Beijing (CN)
Assigned to BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/638,780
Filed by BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Apr. 8, 2021, PCT No. PCT/CN2021/086026
§ 371(c)(1), (2) Date Feb. 25, 2022,
PCT Pub. No. WO2021/223564, PCT Pub. Date Nov. 11, 2021.
Claims priority of application No. 202010383454.7 (CN), filed on May 8, 2020.
Prior Publication US 2022/0277698 A1, Sep. 1, 2022
Int. Cl. G09G 3/34 (2006.01); G09G 3/36 (2006.01); H05K 1/14 (2006.01)
CPC G09G 3/3413 (2013.01) [G09G 3/3426 (2013.01); G09G 3/3648 (2013.01); H05K 1/141 (2013.01); G09G 2310/08 (2013.01); G09G 2320/064 (2013.01); G09G 2320/0666 (2013.01); G09G 2360/16 (2013.01); H05K 2201/10136 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A backlight driving board, comprising:
a main circuit board;
a photosensitive device disposed on the main circuit board, the photosensitive device being configured to sense a brightness and a color temperature of a light source, and output brightness data and color temperature data;
a backlight controller disposed on the main circuit board, the backlight controller being coupled to the photosensitive device, and configured to receive the brightness data and adjust a light-emitting brightness of the light source according to the brightness data;
a first port disposed on the main circuit board, the first port being coupled to the photosensitive device, and configured to be coupled to a system board, receive the color temperature data, and transmit the color temperature data to the system board, such that the system board adjusts a color temperature of a picture displayed by a display panel according to the color temperature data; and
an auxiliary circuit board, the auxiliary circuit board and the main circuit board being capable of transmitting data to each other, and the photosensitive device being disposed on the main circuit board through the auxiliary circuit board.