公开(公告)号：US12283254B2

公开(公告)日：2025-04-22

申请号：US18373062

申请日：2023-09-26

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sugyeung Kang ,  Sungmok Lee ,  Changyeon Cho ,  Kang Joo Kim ,  Sunkwon Kim

IPC: G09G3/34

Abstract: A backlight module includes a pixel driver integrated circuit (PDIC) configured to generate a switch control signal and a pulse control signal, the pulse control signal including timing information and dimming data, a pixel integrated circuit (PIC) configured to generate a pulse modulation signal based on the pulse control signal, a switch group configured to transfer a driving voltage based on the switch control signal, and a backlight unit (BLU) including a first end connected to the switch group and a second end connected to the PIC, the BLU configured to emit light on a panel based on the driving voltage and the pulse modulation signal, where the PDIC is configured to generate the switch control signal and the pulse control signal such that a light emitting diode emits light at a time point at which a pixel of the panel operates.

公开(公告)号：US12092923B2

公开(公告)日：2024-09-17

申请号：US17940619

申请日：2022-09-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Sugyeung Kang ,  Kangjoo Kim ,  Taehyeon Kwon ,  Sunkwon Kim ,  Sewoong Ahn ,  Sungmok Lee ,  Yilho Lee ,  Jongsung Lee ,  Changyeon Cho

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133603 ,  G02F1/133612

Abstract: A backlight system includes a plurality of pixel ICs respectively including a plurality of channels connected to a plurality of LEDs and that control the LEDs to be turned on and off through the channels, and a driver IC connected to the pixel ICs and that supplies a data signal to each of the pixel ICs. The pixel ICs include a first pixel IC connected to first LEDs and a second pixel IC connected to second LEDs. The first pixel IC turns the first LEDs on or off in a first order based on first control data included in the data signal, and the second pixel IC turns the second LEDs on or off in a second order different from the first order based on second control data included in the data signal.