公开(公告)号：US20250131877A1

公开(公告)日：2025-04-24

申请号：US18908330

申请日：2024-10-07

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taeksu KWON ,  Insuk Kim ,  Jeeyeon Eom

IPC: G09G3/3225

Abstract: A display driving circuit includes an operational amplifier configured to, in a first phase of a test period, charge a source line of a display panel based on a first voltage received through a first input terminal, and in a second phase of the test period, output a comparison result signal by comparing a second voltage received through the first input terminal with a source line voltage received through a second input terminal; a discharge circuit configured to discharge the source line in the second phase; switches configured to, in the first phase, connect an output terminal of the operational amplifier to the source line, and in the second phase, connect the discharge circuit to the source line and the second input terminal of the operational amplifier; and a control logic configured to control a bias current of the operational amplifier based on the comparison result signal.

公开(公告)号：US20220366842A1

公开(公告)日：2022-11-17

申请号：US17591001

申请日：2022-02-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Taeksu KWON ,  Jihoon KIM

IPC: G09G3/3208

Abstract: A display device including: a display panel including first and second data lines, a first and second pixels connected to first and second data lines in first pixel row, third and fourth pixels connected to the second data line in a second pixel row; and a display driver configured to receive image data including first, second, third and fourth pixel data for the first, second, third and fourth pixels, and provide first, second, third and fourth data voltages corresponding to the first, second, third and fourth pixel data to the first, second, third and fourth pixels through the first and second data lines, the display driver further configured to: calculate average data of the first and second pixel data; and selectively perform a charge sharing operation between the first and second data lines according to whether a first increase/decrease condition and a second increase/decrease condition are satisfied.