Invention Grant
- Patent Title: Light-emitting diode displays
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Application No.: US17513643Application Date: 2021-10-28
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Publication No.: US11895883B2Publication Date: 2024-02-06
- Inventor: Cheng-Ho Yu , Chin-Wei Lin , Shyuan Yang , Ting-Kuo Chang , Tsung-Ting Tsai , Warren S. Rieutort-Louis , Shih-Chang Chang , Yu Cheng Chen , John Z. Zhong
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Treyz Law Group, P.C.
- Agent Joseph F. Guihan
- Main IPC: H10K59/131
- IPC: H10K59/131 ; G09G3/3233 ; G09G3/3266 ; H10K59/40 ; H10K59/88 ; H10K59/10 ; G06F3/044

Abstract:
A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.
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