公开(公告)号：US11631376B1

公开(公告)日：2023-04-18

申请号：US17574803

申请日：2022-01-13

Applicant: STMicroelectronics S.r.l.

Inventor： Gaetano L'Episcopo ,  Giovanni Conti ,  Carmelo Occhipinti ,  Mario Antonio Aleo

IPC: G09G3/34 ,  G09G3/36

Abstract: A non-emissive display includes a backlight controller sending a pulse during each sub-frame of a plurality of frames to row and column drivers that drive backlight zones. The row drivers count each pulse to keep a pulse count total, and reset the pulse count total when it is equal to a first number indicating how many row drivers are present. Each row driver activates its channels and waits for a next pulse if the pulse count total is not equal to the first number and if the pulse count total is equal to a second number indicating in which sub-frame that first driver is to be activated. Each row driver waits for a next pulse if the pulse count total is not equal to the first number and the second number. Each column driver activates its channel in response to receipt of each pulse.

公开(公告)号：US11978411B2

公开(公告)日：2024-05-07

申请号：US18120312

申请日：2023-03-10

Applicant: STMicroelectronics S.r.l.

Inventor： Gaetano L'Episcopo ,  Giovanni Conti ,  Carmelo Occhipinti ,  Mario Antonio Aleo

IPC: G09G3/34 ,  G09G3/36

CPC classification number: G09G3/3426 ,  G09G3/3611 ,  G09G2310/08 ,  G09G2330/021

Abstract: A non-emissive display includes a backlight controller sending a pulse during each sub-frame of a plurality of frames to row and column drivers that drive backlight zones. The row drivers count each pulse to keep a pulse count total, and reset the pulse count total when it is equal to a first number indicating how many row drivers are present. Each row driver activates its channels and waits for a next pulse if the pulse count total is not equal to the first number and if the pulse count total is equal to a second number indicating in which sub-frame that first driver is to be activated. Each row driver waits for a next pulse if the pulse count total is not equal to the first number and the second number. Each column driver activates its channel in response to receipt of each pulse.