US-12620342-B2 - Display apparatus for reducing an effect of cross-talk and method for controlling same

US12620342B2US 12620342 B2US12620342 B2US 12620342B2US-12620342-B2

Abstract

A display apparatus includes a display including a plurality of pixels; a memory storing a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of a target pixel; and at least one processor configured to: obtain a gradation value of each pixel included in at least one line of pixels among the plurality of pixels, obtain histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels, identify an amount of cross-talk corresponding to a target pixel based on the histogram information and the cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of the target pixel, and obtain a gradation correction value of the target pixel based on the identified amount of cross-talk.

Inventors

Seungryong HAN
Tetsuya Shigeta
Gangmo KOO
Hwaseok SEONG

Assignees

SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20240403
Priority Date: 20211220

Claims (20)

1 . A display apparatus comprising: a display comprising a plurality of pixels; a memory storing a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of a target pixel included in a pixel line among the plurality of pixels; and at least one processor configured to: obtain a gradation value of each pixel included in at least one line of pixels among the plurality of pixels, obtain histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels, identify an amount of cross-talk to which the target pixel is influenced by adjacent pixels based on the number of pixels corresponding to each gradation section according to the histogram information and the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel, obtain a gradation correction value of the target pixel based on the identified amount of cross-talk, and obtain a corrected gradation value of the target pixel based on the obtained gradation correction value, and wherein the at least one processor is further configured to identify the amount of crosstalk by integrating values obtained by multiplying the number of pixels corresponding to each gradation section in the histogram information, to which the target pixel included in the pixel line among the plurality of pixels is mapped, with a cross-talk weight corresponding to each gradation section.
2 . The display apparatus of claim 1 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises: a cross-talk weight for each gradation of an adjacent pixel corresponding to a first gradation value of the target pixel and a cross-talk weight for each gradation of an adjacent pixel corresponding to a second gradation value of the target pixel.
3 . The display apparatus of claim 2 , wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the first gradation value of the target pixel comprises: based on the target pixel having the first gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to a distance between the target pixel and the adjacent pixel, and wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the second gradation value of the target pixel comprises: based on the target pixel having the second gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to the distance between the target pixel and the adjacent pixel.
4 . The display apparatus of claim 1 , wherein the at least one processor is further configured to: divide a gradation range into a plurality of gradation sections, and identify the number of pixels corresponding to each of the plurality of gradation sections based on the obtained gradation value for each pixel to obtain the histogram information.
5 . The display apparatus of claim 4 , wherein the at least one processor is further configured to: divide a first gradation range that is smaller than a threshold value in the gradation range into a plurality of gradation sections having a first length, and divide a second gradation range that is greater than or equal to the threshold value in the gradation range into a plurality of gradation sections having a second length that is longer than the first length to obtain the histogram information.
6 . The display apparatus of claim 1 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises: a cross-talk weight for each gradation of at least one of an R sub-pixel, a G sub-pixel, or a B sub-pixel of an adjacent pixel corresponding to each gradation value of an R sub-pixel of the target pixel; a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of the adjacent pixel corresponding to each gradation value of a G sub-pixel of the target pixel; and a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of the adjacent pixel corresponding to each gradation value of a B sub-pixel of the target pixel.
7 . The display apparatus of claim 1 , wherein the at least one processor is further configured to: obtain a corrected gradation value of a first target pixel included in a first line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the first line, and obtain a corrected gradation value of a second target pixel included in a second line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the second line.
8 . The display apparatus of claim 1 , wherein each of the plurality of pixels comprises at least one light emitting diode (LED).
9 . A method for controlling a display apparatus including a plurality of pixels, the method comprising: obtaining a gradation value of each pixel included in at least one line of pixels among the plurality of pixels; obtaining histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels; identifying an amount of cross-talk to which a target pixel is influenced by adjacent pixels based on the number of pixels corresponding to each gradation section according to the histogram information and a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of the target pixel, wherein the target pixel is included in a pixel line among the plurality of pixels; obtaining a gradation correction value of the target pixel based on the identified amount of cross-talk; and obtaining a corrected gradation value of the target pixel based on the obtained gradation correction value, and wherein the identifying comprises identifying the amount of cross-talk by integrating values obtained by multiplying the number of pixels corresponding to each gradation section in the histogram information, to which the target pixel included in the pixel line among the plurality of pixels is mapped, with a cross-talk weight corresponding to each gradation section.
10 . The method of claim 9 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises: a cross-talk weight for each gradation of an adjacent pixel corresponding to a first gradation value of the target pixel and a cross-talk weight for each gradation of an adjacent pixel corresponding to a second gradation value of the target pixel.
11 . The method of claim 10 , wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the first gradation value of the target pixel comprises: based on the target pixel having the first gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to a distance between the target pixel and the adjacent pixel, and wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the second gradation value of the target pixel comprises: based on the target pixel having the second gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to the distance between the target pixel and the adjacent pixel.
12 . The method of claim 9 , wherein the obtaining the histogram information comprises: dividing a gradation range into a plurality of gradation sections, and identifying the number of pixels corresponding to each of the plurality of gradation sections based on the obtained gradation value for each pixel.
13 . The method of claim 12 , wherein the dividing the gradation range into a plurality of sections comprises: dividing a first gradation range that is smaller than a threshold value in the gradation range into a plurality of gradation sections having a first length, and dividing a second gradation range that is greater than or equal to the threshold value in the gradation range into a plurality of gradation sections having a second length that is longer than the first length.
14 . The method of claim 9 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises: a cross-talk weight for each gradation of at least one of an R sub-pixel, a G sub-pixel, or a B sub-pixel of an adjacent pixel corresponding to each gradation value of an R sub-pixel of the target pixel; a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of an adjacent pixel corresponding to each gradation value of a G sub-pixel of the target pixel; and a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of an adjacent pixel corresponding to each gradation value of a B sub-pixel of the target pixel.
15 . The method of claim 9 , further comprising: obtaining a corrected gradation value of a first target pixel included in a first line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the first line; and obtaining a corrected gradation value of a second target pixel included in a second line of pixels among the plurality of pixels, based on a gradation value of each pixel included in the second line.
16 . A non-transitory computer-readable medium configured to store computer instructions for a display apparatus including a plurality of pixels to perform an operation when executed by a processor of the display apparatus, the operation comprising: obtaining a gradation value of each pixel included in at least one line of pixels among the plurality of pixels; obtaining histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels; identifying an amount of cross-talk to which a target pixel is influenced by adjacent pixels based on the number of pixels corresponding to each gradation section according to the histogram information and a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of the target pixel, wherein the target pixel is included in a pixel line among the plurality of pixels; obtaining a gradation correction value of the target pixel based on the identified amount of cross-talk; and obtaining a corrected gradation value of the target pixel based on the obtained gradation correction value, and wherein the identifying comprises identifying the amount of cross-talk by integrating values obtained by multiplying the number of pixels corresponding to each gradation section in the histogram information, to which the target pixel included in the pixel line among the plurality of pixels is mapped, with a cross-talk weight corresponding to each gradation section.
17 . The non-transitory computer-readable medium of claim 16 , wherein the cross-talk weight for each gradation of adjacent pixels corresponding to the gradation value of the target pixel comprises: a cross-talk weight for each gradation of an adjacent pixel corresponding to a first gradation value of the target pixel and a cross-talk weight for each gradation of an adjacent pixel corresponding to a second gradation value of the target pixel.
18 . The non-transitory computer-readable medium of claim 17 , wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the first gradation value of the target pixel comprises: based on the target pixel having the first gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to a distance between the target pixel and the adjacent pixel, and wherein the cross-talk weight for each gradation of the adjacent pixel corresponding to the second gradation value of the target pixel comprises: based on the target pixel having the second gradation value, a cross-talk weight for each gradation of the adjacent pixel is according to the distance between the target pixel and the adjacent pixel.
19 . The non-transitory computer-readable medium of claim 16 , wherein the obtaining the histogram information comprises: dividing a gradation range into a plurality of gradation sections, and identifying the number of pixels corresponding to each of the plurality of gradation sections based on the obtained gradation value for each pixel.
20 . The non-transitory computer-readable medium of claim 19 , wherein the dividing the gradation range into a plurality of sections comprises: dividing a first gradation range that is smaller than a threshold value in the gradation range into a plurality of gradation sections having a first length, and dividing a second gradation range that is greater than or equal to the threshold value in the gradation range into a plurality of gradation sections having a second length that is longer than the first length.

Description

CROSS REFERENCE TO RELATED APPLICATION(S) This application is a continuation of International Application No. PCT/KR2022/016464, filed on Oct. 26, 2022, in the Korean Intellectual Property Receiving Office, which is based on and claims priority to Korean Patent Application No. 10-2021-0182813, filed on Dec. 20, 2021, in the Korean Intellectual Property Office, the disclosures of which are incorporated by reference herein in their entireties. BACKGROUND 1. Field The disclosure relates to a display apparatus and a method for controlling the same, and more particularly, to a display apparatus equipped with a function of reducing cross-talk, and a method for controlling the same. 2. Description of Related Art Recently, display apparatuses displaying images through a display panel are generally being distributed and used. A display apparatus may include a plurality of thin film transistors (TFTs) on a display panel, and electromagnetic coupling that was not intended may be generated in the designing process of the display apparatus among the plurality of TFTs. In other words, due to electromagnetic coupling that was generated among the plurality of TFTs, influence is exerted among adjacent pixels on the display panel, and due to this, pixels operating in higher luminance or lower luminance than the luminance to be output by the display apparatus may be generated, and this is referred to as cross-talk (X-talk). In case cross-talk is generated, degradation may be generated in an image provided through the display panel, and the satisfaction of a user who is provided with the image may be reduced. Accordingly, there has been a continuous demand for a method for reducing cross-talk generated in a display panel. SUMMARY One or more aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. According to an aspect of an embodiment, a display apparatus may include a display including a plurality of pixels; a memory storing a cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of a target pixel; and at least one processor configured to: obtain a gradation value of each pixel included in at least one line of pixels among the plurality of pixels, obtain histogram information indicating a number of pixels corresponding to each gradation section based on the obtained gradation value of each pixel in the at least one line of pixels, identify an amount of cross-talk corresponding to a target pixel based on the histogram information and the cross-talk weight for each gradation of adjacent pixels corresponding to a gradation value of the target pixel, obtain a gradation correction value of the target pixel based on the identified amount of cross-talk, and obtain a corrected gradation value of the target pixel based on the obtained gradation correction value. The cross-talk weight may include a cross-talk weight for each gradation of an adjacent pixel corresponding to a first gradation value of the target pixel and a cross-talk weight for each gradation of an adjacent pixel corresponding to a second gradation value of the target pixel. The cross-talk weight for each gradation of the adjacent pixel corresponding to the first gradation value of the target pixel may include: based on the target pixel having the first gradation value, a cross-talk weight for each gradation according to a distance between the target pixel and the adjacent pixel, and the cross-talk weight for each gradation of the adjacent pixel corresponding to the second gradation value of the target pixel may include: based on the target pixel having the second gradation value, a cross-talk weight for each gradation according to the distance between the target pixel and the adjacent pixel. The at least one processor may be further configured to divide a gradation range into a plurality of gradation sections, and identify a number of pixels corresponding to each of the plurality of gradation sections based on the obtained gradation value for each pixel to obtain the histogram information. The at least one processor may be further configured to divide a first gradation range that is smaller than a threshold value in the gradation range into a plurality of gradation sections having a first length, and divide a second gradation range that is greater than or equal to the threshold value in the gradation range into a plurality of gradation sections having a second length that is longer than the first length to obtain the histogram information. The cross-talk weight may include: a cross-talk weight for each gradation of at least one of an R sub-pixel, a G sub-pixel, or a B sub-pixel of an adjacent pixel corresponding to each gradation value of an R sub-pixel of the target pixel; a cross-talk weight for each gradation of at least one of the R sub-pixel, the G sub-pixel, or the B sub-pixel of the adjacent pixel corres