Invention Grant
- Patent Title: Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
-
Application No.: US17078152Application Date: 2020-10-23
-
Publication No.: US11244615B2Publication Date: 2022-02-08
- Inventor: Gholamreza Chaji
- Applicant: Ignis Innovation Inc.
- Applicant Address: CA Waterloo
- Assignee: Ignis Innovation Inc.
- Current Assignee: Ignis Innovation Inc.
- Current Assignee Address: CA Waterloo
- Agency: Stratford Group Ltd.
- Main IPC: G09G3/30
- IPC: G09G3/30 ; G09G3/32 ; G09G3/3233 ; G09G3/3283 ; G09G3/3208 ; G09G3/3258 ; G09G3/325 ; G09G3/3291

Abstract:
A display with a pixel circuit for driving a current-driven emissive element includes a feedback capacitor in series between the emissive element and a programming node of the pixel circuit. During driving, variations in the operating voltage of the emissive element due to variations in the current conveyed through the emissive element by a driving transistor are accounted for. The feedback capacitor generates voltage adjustments at the programming node that correspond to the variations at the emissive element, and thus reduces variations in light emission. A reset capacitor connected to a select line is selectively connected to the gate terminal of the driving transistor and resets the driving transistor prior to programming. The select line adjusts the voltage on the gate terminal to reset the driving transistor by the capacitive coupling of the select line to the gate terminal created by the reset capacitor.
Public/Granted literature
- US20210043142A1 PIXEL CIRCUITS INCLUDING FEEDBACK CAPACITORS AND RESET CAPACITORS, AND DISPLAY SYSTEMS THEREFORE Public/Granted day:2021-02-11
Information query
IPC分类: