Invention Grant
- Patent Title: Pixel circuit and display device
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Application No.: US17006023Application Date: 2020-08-28
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Publication No.: US11270639B2Publication Date: 2022-03-08
- Inventor: Tetsuro Yamamoto
- Applicant: JOLED INC.
- Applicant Address: JP Tokyo
- Assignee: JOLED INC.
- Current Assignee: JOLED INC.
- Current Assignee Address: JP Tokyo
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JPJP2019-194927 20191028
- Main IPC: G09G3/3233
- IPC: G09G3/3233

Abstract:
A pixel circuit configured to emit light based on an image signal includes: a light emitting element (organic EL element); a driver transistor configured to adjust current supplied to the light emitting element; and a write transistor connected between a signal line to which the image signal is applied and the driver transistor. The driver transistor includes: a gate electrode; a counter electrode disposed opposite the gate electrode; and a channel disposed between the gate electrode and the counter electrode. A potential applied to the counter electrode in a write period in which the write transistor conducts current in a state in which the image signal is applied to the signal line reduces a resistance value of the driver transistor to lower value than a potential applied to the counter electrode in an emission period of the light emitting element does.
Public/Granted literature
- US20210125556A1 PIXEL CIRCUIT AND DISPLAY DEVICE Public/Granted day:2021-04-29
Information query
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