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Electronic display with hybrid in-pixel and external compensation

A display and pixel technology, applied in static indicators, electric solid state devices, instruments, etc., can solve problems such as mismatching light quantity

Active Publication Date: 2021-01-08
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Variations in transistor threshold voltages can cause display pixels to produce an amount of light that does not match the intended image

Method used

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  • Electronic display with hybrid in-pixel and external compensation
  • Electronic display with hybrid in-pixel and external compensation
  • Electronic display with hybrid in-pixel and external compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] figure 1 An exemplary electronic device of the type that may be equipped with an organic light emitting diode (OLED) display is shown in . like figure 1As shown, the electronic device 10 may have a control circuit 16 . Control circuitry 16 may include storage and processing circuitry to support the operation of device 10 . Storage and processing circuitry may include storage devices such as hard drive storage, non-volatile memory (e.g., flash memory or other electrically programmable read-only memory configured to form a solid-state drive), volatile memory (e.g., static or dynamic random access memory), etc. Processing circuitry in control circuitry 16 may be used to control the operation of device 10 . The processing circuitry may be based on one or more microprocessors, microcontrollers, digital signal processors, baseband processors, power management units, audio codec chips, application specific integrated circuits, programmable integrated circuits, and the li...

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PUM

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Abstract

The invention relates to an electronic display with a hybrid in-pixel and external compensation. A display pixel is provided that is operable to support hybrid compensation scheme having both in-pixelthreshold voltage canceling and external threshold voltage compensation. The display may include multiple p-type silicon transistors with at least one n-type semiconducting-oxide transistor and one storage capacitor. An on-bias stress phase may be performed prior to a threshold voltage sampling and data programming phase to mitigate hysteresis and improve first frame response. In low refresh ratedisplays, a first additional on-bias stress operation can be performed separate from the threshold voltage sampling and data programming phase during a refresh frame and a second additional on-bias stress operation can be performed during a vertical blanking frame. The display pixel may be configured to receive an initialization voltage and an anode reset voltage, either of which can be dynamically tuned to match the stress of the first and second additional on-bias stress operations to minimize flicker.

Description

[0001] Divisional statement [0002] This application is a divisional application of the Chinese invention patent application with the application date of January 10, 2020, the title of the invention is "Electronic Display with Mixed Pixel Inner and Outer Compensation", and the application number is: 202010026648.1. [0003] priority claim [0004] This patent application claims priority to U.S. Patent Application 16 / 716,911, filed December 17, 2019, and U.S. Provisional Patent Application 62 / 791,522, filed January 11, 2019, which are hereby incorporated by reference in their entirety . technical field [0005] The present disclosure relates generally to electronic devices having displays, and more particularly to display driver circuits for displays such as organic light emitting diode displays. Background technique [0006] Electronic devices often include displays. For example, cellular telephones and portable computers include displays for presenting information to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3233
CPCG09G3/3233G09G3/32G09G2300/0819G09G2300/0842G09G2300/0861G09G2320/0295G09G2320/043G09G2300/0809G09G2310/0245G09G2310/06G09G2320/0693G09G3/3258G09G2320/0233H01L29/7869H10K59/1213
Inventor 林敬伟小野晋也Z·李王云F·贵
Owner APPLE INC
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