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US 9,519,164 B2Granted
Systems and methods for mura calibration preparation
AssigneeApple Inc.
InventorsAhmad Al-Dahle, David A. Stronks, Hopil Bae
Life of this patent
Estimating the term…
Abstract
Systems and methods for calibrating an electronic display to reduce or eliminate artifacts are provided. One method for reducing or eliminating artifacts may involve baking the operational—but not yet fully calibrated—electronic display to reduce stray charge on the electronic display. After baking the display, the electronic display may be calibrated to reduce or eliminate flicker and/or mura artifacts
Claims18
A method for manufacturing an electronic display comprising:
- baking the electronic display to reduce stray charge on the electronic display comprising a liquid crystal display, wherein:
- reducing the stray charge reduces bias voltages accumulated in the liquid crystal display, wherein reducing the bias voltages reduces a mura artifact or a flicker of the liquid crystal display;
- the liquid crystal display comprises a plurality of distinct common voltage layers (VCOMs), wherein each VCOM provides a common electrode for a plurality of pixels, wherein each pixel comprises a respective pixel electrode, wherein each pixel is configured to be activated by at least one of a plurality of gate lines;
- and
- the electronic display is configured to be sufficiently operational so as to be capable of being calibrated to reduce the mura artifact or the flicker of the liquid crystal display;
- and
- calibrating the electronic display to reduce the mura artifact or the flicker of the liquid crystal display after baking the display.
4 more elements
A method for manufacturing an electronic display, comprising:
- providing a liquid crystal display, wherein the liquid crystal display comprises a plurality of distinct common voltage layers (VCOMs) configured to cause a mura artifact to appear on the liquid crystal display when the liquid crystal display is operated, wherein each VCOM provides a common electrode for a plurality of pixels, wherein each pixel comprises a respective pixel electrode, wherein each pixel is configured to be activated by at least one of a plurality of gate lines;
- baking the liquid crystal display to reduce stray charge, wherein reducing the stray charge reduces bias voltages accumulated in the liquid crystal display, wherein reducing the bias voltages reduces the mura artifact or a flicker of the liquid crystal display;
- and
- calibrating an operating parameter of the liquid crystal display to reduce or eliminate the mura artifact after the stray charge has been reduced due to baking.
1 more element
A method for manufacturing an electronic device, comprising:
- installing an electronic display into the electronic device, wherein stray charge accumulates on components of the electronic display during installation, wherein the electronic display comprises a liquid crystal display, wherein the liquid crystal display comprises a plurality of distinct common voltage layers (VCOMs), wherein each VCOM provides a common electrode for a plurality of pixels, wherein each pixel comprises a respective pixel electrode, wherein each pixel is configured to be activated by at least one of a plurality of gate lines;
- baking the electronic device to cause the stray charge to dissipate from the components of the electronic display, wherein causing the stray charge dissipate from the components of the electronic display reduces bias voltages accumulated in the liquid crystal display, wherein reducing the bias voltages reduces a mura artifact or a flicker of the liquid crystal display;
- and
- calibrating the electronic display while the stray charge is dissipated.
1 more element
Dependencies are inferred from the claim text.