OLED voltage driver with current-voltage compensation
DE602018093515T2Active Publication Date: 2026-09-02APPLE INC
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Patent Information
- Application Number
- DE602018093515
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2017-09-21
- Filing Date
- 2018-09-14
- Publication Date
- 2026-09-02
- Estimated Expiration
- 2038-09-14
AI Technical Summary
Technical Problem
Voltage degradation in pixels of electronic displays due to aging, temperature, and other factors leads to non-uniformity and visible image artifacts, which existing technologies have not adequately addressed.
Method used
A reference array is used to determine a current-voltage relationship, capturing gamma tap points and compensating for voltage degradation by adjusting pixel voltages based on this relationship, using processing circuitry and digital-to-analog converters to improve display uniformity.
Benefits of technology
The solution effectively reduces visible image artifacts by compensating for operational variations in pixel behavior, enhancing display quality and uniformity across different devices and usage conditions.
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