Display apparatus and method of driving the display apparatus

Patent metadata

Field	Value
Publication number	US-12451072-B2
Application number	US-202418903981-A
Country	US
Kind code	B2
Filing date	Oct 1, 2024
Priority date	Oct 5, 2023
Publication date	Oct 21, 2025
Grant date	Oct 21, 2025

Abstract

A display apparatus includes: a display panel including a plurality of pixels and a panel driver for applying a data voltage to pixels by the same pixel-column and performing a sensing operation, which senses the pixels receiving the data voltage. The plurality of pixels include first pixels having a first color and second pixels having a second color different from the first color. After the sensing operation is performed on a first odd-numbered group of the first pixels, the sensing operation is performed on a first even-numbered group of the first pixels. After the sensing operation is performed on the first even-numbered group of the first pixels, the sensing operation is performed on a second odd-numbered group of the second pixels. After the sensing operation is performed on the second odd-numbered group, the sensing operation is performed on a second even-numbered group of the second pixels.

First claim

What is claimed is:

1. A display apparatus comprising:
a display panel including a plurality of pixels; and
a panel driver configured to apply a data voltage to pixels in a same pixel-column of the plurality of pixels and to perform a sensing operation, which senses the pixels receiving the data voltage,
wherein the plurality of pixels include first pixels having a first color and second pixels having a second color different from the first color,
wherein after the sensing operation is performed on a first odd-numbered group of the first pixels, the sensing operation is performed on a first even-numbered group of the first pixels,
wherein after the sensing operation is performed on the first even-numbered group, the sensing operation is performed on a second odd-numbered group of the second pixels, and
wherein after the sensing operation is performed on the second odd-numbered group, the sensing operation is performed on a second even-numbered group of the second pixels, and
wherein the panel driver generates a data signal based on the sensing operation.

2. The display apparatus of claim 1 , wherein the plurality of pixels further includes third pixels having a third color different from the first color and the second color,
wherein after the sensing operation is performed on the second even-numbered group, the sensing operation is performed on a third odd-numbered group of the third pixels, and
wherein after the sensing operation is performed on the third odd-numbered group, the sensing operation is performed on a third even-numbered group of the third pixels.

3. The display apparatus of claim 2 , wherein the first color is red, the second color is green and the third color is blue.

4. The display apparatus of claim 2 , wherein the first color is blue, the second color is red and the third color is green.

5. The display apparatus of claim 2 , wherein the display panel includes first to sixth data lines configured to output the data voltage,
wherein the data voltage includes first to sixth data voltages,
wherein the first odd-numbered group is connected to the first data line,
wherein the second odd-numbered group is connected to the second data line,
wherein the third odd-numbered group is connected to the third data line,
wherein the first even-numbered group is connected to the fourth data line,
wherein the second even-numbered group is connected to the fifth data line,
wherein the third even-numbered group is connected to the sixth data line,
wherein the panel driver is configured to output the fourth data voltage to the fourth data line after outputting the first data voltage to the first data line,
wherein the panel driver is configured to output the second data voltage to the second data line after outputting the fourth data voltage to the fourth data line,
wherein the panel driver is configured to output the fifth data voltage to the fifth data line after outputting the second data voltage to the second data line,
wherein the panel driver is configured to output the third data voltage to the third data line after outputting the fifth data voltage to the fifth data line, and
wherein the panel driver is configured to output the sixth data voltage to the sixth data line after outputting the third data voltage to the third data line.

6. The display apparatus of claim 2 , wherein the display panel includes first to sixth data lines configured to output the data voltage,
wherein the data voltage includes first to sixth data voltages,
wherein the first odd-numbered group is connected to the first data line,
wherein the second odd-numbered group is connected to the second data line,
wherein the third odd-numbered group is connected to the third data line,
wherein the first even-numbered group is connected to the fourth data line,
wherein the second even-numbered group is connected to the fifth data line,
wherein the third even-numbered group is connected to the sixth data line,
wherein the panel driver is configured to output the sixth data voltage to the sixth data line after outputting the third data voltage to the third data line,
wherein the panel driver is configured to output the first data voltage to the first data line after outputting the sixth data voltage to the sixth data line,
wherein the panel driver is configured to output the fourth data voltage to the fourth data line after outputting the first data voltage to the first data line,
wherein the panel driver is configured to output the second data voltage to the second data line after outputting the fourth data voltage to the fourth data line, and
wherein the panel driver is configured to output the fifth data voltage to the fifth data line after outputting the second data voltage to the second data line.

7. The display apparatus of claim 1 , wherein one of the plurality of pixels includes,
a first transistor including a control electrode connected to a first node, a first electrode configured to receive a first power voltage and a second electrode connected to a second node;
a second transistor including a control electrode configured to receive a scan signal, a first electrode connected to a data line and a second electrode connected to the first node;
a third transistor including a control electrode configured to receive a sensing gate signal, a first electrode connected to a sensing line and a second electrode connected to the second node;
a storage capacitor including a first electrode connected to the first node and a second electrode connected to the second node; and
a light emitting element including a first electrode connected to the second node and a second electrode configured to receive a second power voltage.

8. The display apparatus of claim 1 , wherein the sensing operation is performed in response to a power-off signal applied to the panel driver.

9. A display apparatus comprising:
a display panel including a plurality of pixels; and
a panel driver configured to apply a data voltage to pixels in a same pixel-column of the plurality of pixels and to perform a sensing operation, which senses the pixels receiving the data voltage,
wherein the plurality of pixels include first pixels having a first color, second pixels having a second color different from the first color, and third pixels having a third color different from the first color and the second color,
wherein after the sensing operation is performed on a first 3P−2-numbered group of the first pixels, the sensing operation is performed on a first 3P−1-numbered group of the first pixels, wherein P is a positive integer,
wherein after the sensing operation is performed on the first 3P−1-numbered group, the sensing operation is performed on a first 3P-numbered group of the first pixels,
wherein after the sensing operation is performed on the first 3P-numbered group, the sensing operation is performed on a second 3P−2-numbered group of the second pixels,
wherein after the sensing operation is performed on the second 3P−2-numbered group, the sensing operation is performed on a second 3P−1-numbered group of the second pixels,
wherein after the sensing operation is performed on the second 3P−1-numbered group, the sensing operation is performed on a second 3P-numbered group of the second pixels,
wherein after the sensing operation is performed on the second 3P-numbered group, the sensing operation is performed on a third 3P−2-numbered group of the third pixels,
wherein after the sensing operation is performed on the third 3P−2-numbered group, the sensing operation is performed on a third 3P−1-numbered group of the third pixels, and
wherein after the sensing operation is performed on the third 3P−1-numbered group, the sensing operation is perfor

Assignees

• Samsung Display Co Ltd

Inventors

• Seo Wonjin
• Shin Seung-Woon
• Sung Hwaan
• Lee Jeongah
• Hwang Daeho

Classifications

• G09G2320/0233

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

• G09G2320/0247

  Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes · CPC title

• G09G3/2007

  Display of intermediate tones · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2330/027

  Arrangements or methods related to powering off a display · CPC title