Invention Grant
- Patent Title: Display device having configuration for constant current setting to improve contrast and driving method therefor
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Application No.: US17278440Application Date: 2019-10-02
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Publication No.: US11545074B2Publication Date: 2023-01-03
- Inventor: Junichi Yamashita , Daisuke Kawae , Shinji Yamashita
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-si
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2018-189108 20181004,JPJP2018-189109 20181004
- International Application: PCT/KR2019/012981 WO 20191002
- International Announcement: WO2020/071826 WO 20200409
- Main IPC: G09G3/32
- IPC: G09G3/32 ; G09G3/3291 ; G09G3/20 ; G09G3/3233

Abstract:
A display device includes a plurality of pixel circuits each including: a light-emitting element; a pulse width modulation (PWM) controller configured to control whether to supply current to the light-emitting element; and a constant current controller configured to supply the current to the light-emitting element, wherein the constant current controller, the PWM controller, and the light-emitting element are connected in series between a first power line and a second power line to supply the current to the light-emitting element; and a transistor configured to turn off the light-emitting element during a constant current setting period is provided between the first power line and the constant current controller.
Public/Granted literature
- US20210358394A1 DISPLAY DEVICE HAVING CONFIGURATION FOR CONSTANT CURRENT SETTING AND DRIVING METHOD THEREFOR Public/Granted day:2021-11-18
Information query
IPC分类: