US 12,217,710 B2
LED-display-screen drive chip and LED display screen
Yongsheng Tang, Chengdu (CN); Shilin Shen, Chengdu (CN); Aqiang Liu, Chengdu (CN); and Shixiong Lu, Chengdu (CN)
Assigned to Chengdu Lippxin Microelectronics Co., LTD, Chengdu (CN)
Filed by Chengdu Lippxin Microelectronics Co., LTD, Chengdu (CN)
Filed on Oct. 30, 2023, as Appl. No. 18/497,006.
Claims priority of application No. 202211419690.5 (CN), filed on Nov. 14, 2022.
Prior Publication US 2024/0169939 A1, May 23, 2024
Int. Cl. G09G 3/34 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/3426 (2013.01) [G09G 3/32 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0271 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An LED-display-screen drive chip, wherein the drive chip is configured such that:
when a grayscale value R of a grayscale data is less than or equal to Q, the grayscale data is allocated to one display group in M display groups; and
when a grayscale value R of a grayscale data is larger than Q, a grayscale value of one display group of the M display groups is configured as P, wherein P>=Q, and a total grayscale value of remaining M−1 display groups is R−P,
wherein, among the remaining M−1 display groups, the number of display groups, whose grayscale values are each less than L but not 0, is not more than 1, wherein L≥1, Q>L, and Q is a centralized display threshold.