Method of performing a multi-time programmable (mtp) operation and organic light-emitting diode (oled) display employing the same

Patent metadata

Field	Value
Publication number	US-2016155376-A1
Application number	US-201514699297-A
Country	US
Kind code	A1
Filing date	Apr 29, 2015
Priority date	Nov 28, 2014
Publication date	Jun 2, 2016
Grant date	—

Abstract

A method of performing a multi-time programmable (MTP) operation and an organic light-emitting diode (OLED) display employing the same are disclosed. In one aspect, the method includes performing a white color MTP operation for displaying a first target color coordinate corresponding to a white color test grayscale on a display device so as to generate MTP adjustment data. The method also includes performing a blue color MTP operation for displaying a second target color coordinate corresponding to a blue color test grayscale on the display device. The blue color MTP operation includes adjusting the MTP adjustment data such that the display device displays blue color data using a blue color sub-pixel, a green color sub-pixel adjacent to the blue color sub-pixel, and a red color sub-pixel adjacent to the blue color sub-pixel.

First claim

What is claimed is:

1 . A method of performing a multi-time programmable (MTP) operation, the method comprising:
performing a white color MTP operation for displaying a first target color coordinate corresponding to a white color test grayscale on a display device so as to generate MTP adjustment data; and performing a blue color MTP operation for displaying a second target color coordinate corresponding to a blue color test grayscale on the display device, wherein the blue color MTP operation comprises adjusting the MTP adjustment data such that the display device displays blue color data using a blue color sub-pixel, a green color sub-pixel adjacent to the blue color sub-pixel, and a red color sub-pixel adjacent to the blue color sub-pixel.

2 . The method of claim 1 , wherein the blue, green, and red color sub-pixels are included in the same pixel.

3 . The method of claim 1 , wherein the performing of the white color MTP operation includes:
determining the first target color coordinate corresponding to the white color test grayscale; measuring a first color coordinate for a first image corresponding to the white color test grayscale when the first image is displayed on the display device; comparing the first target color coordinate to the first measured color coordinate; and generating the MTP adjustment data such that the first measured color coordinate substantially matches the first target color coordinate.

4 . The method of claim 1 , wherein performing the blue color MTP operation includes:
determining the second target color coordinate corresponding to the blue color test grayscale; measuring a second color coordinate for a second image corresponding to the blue color test grayscale when the second image is displayed on the display device; comparing the second target color coordinate to the second measured color coordinate; and adjusting the MTP adjustment data such that the second measured color coordinate substantially matches the second target color coordinate.

5 . The method of claim 4 , wherein the MTP adjustment data includes MTP offset data that are calculated based on a reference gamma curve.

6 . The method of claim 5 , wherein the MTP offset data include red color offset data corresponding to the red color sub-pixel, green color offset data corresponding to the green color sub-pixel, and blue color offset data corresponding to the blue color sub-pixel.

7 . The method of claim 6 , wherein the display device comprises a driving integrated circuit (IC) including a memory and wherein the MTP adjustment data are stored in the memory.

8 . An organic light-emitting diode (OLED) display, comprising:
a display panel including a plurality of pixels, wherein the pixels include a red color sub-pixel, a green color sub-pixel, and a blue color sub-pixel that are adjacent to each other; a scan driver configured to apply scan signals to the pixels; a multi-time programmable (MTP) processor configured to adjust image data using MTP adjustment data, wherein the display panel is configured to display blue color data using the blue color sub-pixel, the green color sub-pixel, and the red color sub-pixel; a data driver configured to: i) generate data signals based on the adjusted image data and ii) apply the data signals to the pixels; a power supply configured to provide a high power voltage and a low power voltage to the pixels; and a timing controller configured to control the scan driver, the MTP processor, the data driver, and the power supply.

9 . The display of claim 8 , wherein the MTP processor is further configured to adjust the MTP adjustment data via:
performing a white color MTP operation for displaying a first target color coordinate corresponding to a white color test grayscale on the display panel; and performing a blue color MTP operation for displaying a second target color coordinate corresponding to a blue color test grayscale on the display panel.

10 . The display of claim 9 , wherein the MTP processor includes:
a memory configured to store the MTP adjustment data, wherein the MTP processor is further configured to adjust the MTP adjustment data based on the white color MTP operation and the blue color MTP operation; and an image data adjustment unit configured to adjust the image data based on the MTP adjustment data.

11 . The display of claim 10 , wherein the MTP processor is included in the data driver or the timing controller.

12 . The display of claim 8 , wherein the MTP adjustment data includes MTP offset data that are calculated based on a reference gamma curve.

13 . The display of claim 12 , wherein the MTP offset data include red color offset data corresponding to the red color sub-pixel, green color offset data corresponding to the green color sub-pixel, and blue color offset data corresponding to the blue color sub-pixel.

14 . The display of claim 8 , wherein the pixels are arranged in a stripe shape.

15 . The display of claim 14 , wherein the MTP processor is further configured to adjust the image data such that the display panel displays the blue color data using a first red color sub-pixel, a first green color sub-pixel, and a first blue color sub-pixel that are included in a first pixel.

16 . The display of claim 8 , wherein the pixels are arranged in a pentile shape.

17 . The display of claim 16 , wherein the MTP processor is further configured to adjust the image data such that the display panel display the blue color data using a second pixel and a third pixel,
wherein the second pixel includes a second blue color sub-pixel and a second green color sub-pixel, and wherein the third pixel includes a third red color sub-pixel and a third green color sub-pixel.

18 . The display of claim 8 , wherein the red, green, and blue color sub-pixels respectively comprise red, green, and blue organic light-emitting diodes (OLEDs) and wherein each of the red, green, and blue OLEDs has a different thickness.

19 . The display of claim 18 , wherein the blue color OLED comprises:
a first electrode; a second electrode opposing the first electrode; a blue color organic emission layer interposed between the first electrode and the second electrode; and a resonance layer interposed between the first electrode and the second electrode.

20 . The display of claim 19 , wherein the resonance layer has a thickness selected such that the blue color light emitted by the blue color organic emission layer constructively interferes.

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Dae-Yup
• Shim Ji-Hye

Classifications

• H10K59/876

  comprising a resonant cavity structure, e.g. Bragg reflector pair · CPC title

• G09G3/3208 Primary

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

• G09G2320/0233

  Improving the luminance or brightness uniformity across the screen · CPC title

• G09G2320/0666

  for control of colour parameters, e.g. colour temperature · CPC title

• G09G2320/0285

  using tables for spatial correction of display data · CPC title