Invention Grant
- Patent Title: Image retention mitigation via voltage biasing for organic lighting-emitting diode displays
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Application No.: US17662972Application Date: 2022-05-11
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Publication No.: US11557253B2Publication Date: 2023-01-17
- Inventor: Sangmoo Choi , Chang Ju Kang
- Applicant: Google LLC
- Applicant Address: US CA Mountain View
- Assignee: Google LLC
- Current Assignee: Google LLC
- Current Assignee Address: US CA Mountain View
- Agency: Colby Nipper PLLC
- Main IPC: G09G3/3258
- IPC: G09G3/3258

Abstract:
This document describes systems and techniques for image retention mitigation via voltage biasing for organic light-emitting diode (OLED) displays. In aspects, a pixel array is described having pixel circuits including a first transistor configured to receive a biasing signal from one or more drivers and, based on the biasing signal, enable or disable an application of a bias voltage at a terminal of a second transistor. In so doing, the bias voltage reduces a hysteresis effect experienced by the second transistor for each of the multiple pixel circuits of the pixel array, thereby mitigating an image retention.
Public/Granted literature
- US20220270550A1 Image Retention Mitigation via Voltage Biasing for Organic Lighting-Emitting Diode Displays Public/Granted day:2022-08-25
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