Data-to-scan coupling induced error compensation

Patent metadata

Field	Value
Publication number	US-2025069541-A1
Application number	US-202418780367-A
Country	US
Kind code	A1
Filing date	Jul 22, 2024
Priority date	Aug 23, 2023
Publication date	Feb 27, 2025
Grant date	—

Abstract

An electronic display device designed to a method and device that corrects for distorted luminance and colors due to data-to-scan coupling in a flat-panel display.

First claim

What is claimed is:

1 . An electronic apparatus comprising:
a display panel; a display driver integrated circuit configured to receive an input signal frame comprising lines of pixels, calculate data voltage transition between the lines of pixels by a line subtractor resulting in a spatial interpolated voltage transition calculation, average a voltage across each column within the lines of pixels resulting in a group average voltage, calculate an aggressor value for a scan phase using the spatial interpolated voltage transition calculation and the group average voltage, compensate per the scan phase by correcting using the aggressor value and an input sub-pixel value by aligning with a corresponding first-in first-out (FIFO) buffer to result in compensation correction voltage values, sum the compensation correction voltage values with the input signal frame to result in a compensated output image frame; and, the display panel further configured to display the compensated output image frame.

2 . The electronic apparatus of claim 1 , wherein the display panel is a light-emitting diode (LED) or liquid crystal display (LCD) display.

3 . The electronic apparatus of claim 1 , wherein the display panel is an organic light-emitting diode (OLED) display.

4 . The electronic apparatus of claim 1 , wherein the display panel is a computer.

5 . The electronic apparatus of claim 1 , wherein the display panel is a tablet computer.

6 . The electronic apparatus of claim 1 , wherein the display panel is a mobile phone.

7 . The electronic apparatus of claim 1 , wherein the display panel is a digital watch or augmented reality headset.

8 . A method of operating an electronic apparatus comprising:
receiving an input signal frame comprising lines of pixels; calculating data voltage transition between the lines of pixels by a line subtractor resulting in a spatial interpolated voltage transition calculation; averaging a voltage across each column within the lines of pixels resulting in a group average voltage; calculating an aggressor value for a scan phase using the spatial interpolated voltage transition calculation and the group average voltage; compensating per the scan phase by correcting using the aggressor value and an input sub-pixel value by aligning with a corresponding first-in first-out (FIFO) buffer to result in compensation correction voltage values; summing the compensation correction voltage values with the input signal frame to result in a compensated output image frame; and, displaying the compensated output image frame on a display panel.

9 . The method of claim 8 , wherein the display panel is a light-emitting diode (LED) or liquid crystal display (LCD) display.

10 . The method of claim 8 , wherein the display panel is an organic light-emitting diode (OLED) display.

11 . The method of claim 8 , wherein the display panel is a computer.

12 . The method of claim 8 , wherein the display panel is a tablet computer.

13 . The method of claim 8 , wherein the display panel is a mobile phone.

14 . The method of claim 8 , wherein the display panel is a digital watch or augmented reality headset.

15 . A non-transitory computer readable medium encoded with data and instructions, when executed by electronic apparatus the instructions causing the electronic apparatus to:
receive an input signal frame comprising lines of pixels; calculate data voltage transition between the lines of pixels by a line subtractor resulting in a spatial interpolated voltage transition calculation; average a voltage across each column within the lines of pixels resulting in a group average voltage; calculate an aggressor value for a scan phase using the spatial interpolated voltage transition calculation and the group average voltage; compensate per the scan phase by correcting using the aggressor value and an input sub-pixel value by aligning with a corresponding first-in first-out (FIFO) buffer to result in compensation correction voltage values; sum the compensation correction voltage values with the input signal frame to result in a compensated output image frame; and, display the compensated output image frame on a display panel.

16 . The method of claim 15 , wherein the display panel is a light-emitting diode (LED) or liquid crystal display (LCD) display.

17 . The method of claim 15 , wherein the display panel is an organic light-emitting diode (OLED) display.

18 . The method of claim 15 , wherein the display panel is a computer or tablet computer.

19 . The method of claim 15 , wherein the display panel is a mobile phone.

20 . The method of claim 15 , wherein the display panel is a digital watch or augmented reality headset.

Assignees

• Apple Inc

Inventors

• Lim Jongyup
• Ryu Jie Won
• Le Dortz Nicolas
• Nho Hyunwoo
• Chang Sun-Il
• Cruce Patrick R

Classifications

• G09G3/3225

  using an active matrix · CPC title

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• G09G3/32

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title

• G09G3/36

  using liquid crystals · CPC title