Invention Grant
- Patent Title: Systems and methods for temperature-based parasitic capacitance variation compensation
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Application No.: US16897206Application Date: 2020-06-09
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Publication No.: US11282458B2Publication Date: 2022-03-22
- Inventor: Hyunsoo Kim , Injae Hwang , Jesun Kim , Jesse A. Richmond , Junhua Tan , Jie Won Ryu , Hyunwoo Nho , Kingsuk Brahma , Chaohao Wang , Shiping Shen , Myungjoon Choi , Myung-Je Cho , Rebecca Park , Sun-Il Chang
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fletcher Yoder, P.C.
- Main IPC: G09G3/32
- IPC: G09G3/32 ; G09G3/3258 ; G09G3/36 ; G06F3/044
Abstract:
Systems and methods are presently disclosed that compensate for temperature-based parasitic capacitance variation of a pixel of a display by causing a driver transistor of the pixel to enter an ohmic or linear region. A lookup table is generated based on temperatures at the pixel, diode voltages, and target diode currents or luminances at a diode of the pixel. A correction voltage is determined based on a target diode current or luminance, a temperature at the pixel, and the lookup table. A data voltage is applied corresponding to the target diode current or luminance and the correction voltage to the driver transistor.
Information query
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