Optical detection apparatus for detecting display panel and method for detecting display panel

Patent metadata

Field	Value
Publication number	US-12461018-B2
Application number	US-202217588305-A
Country	US
Kind code	B2
Filing date	Jan 30, 2022
Priority date	Mar 31, 2021
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

An optical detection apparatus and method for detecting a display panel is provided. The apparatus includes photosensitive units arranged in an array. A minimum distance between adjacent photosensitive units is less than a sub-pixel size of the display panel; the photosensitive units in adjacent rows have a position offset in a first direction; and an offset distance corresponding to the position offset is less than the sub-pixel size of the display panel.

First claim

What is claimed is:

1 . An optical detection apparatus for detecting a display panel, comprising photosensitive units arranged in an array, wherein a minimum distance between adjacent photosensitive units is less than a sub-pixel size of the display panel, and the photosensitive units in adjacent rows have a position offset in a first direction, an offset distance corresponding to the position offset being less than the sub-pixel size of the display panel;
wherein a pitch between adjacent photosensitive units is N times the minimum distance between the adjacent photosensitive units, N being an integer greater than or equal to 2; and the pitch between adjacent photosensitive units is an integral multiple of the offset distance, wherein the pitch between the adjacent photosensitive units is a distance between center points of the adjacent photosensitive units.

2 . The apparatus according to claim 1 , wherein the minimum distance between the adjacent photosensitive units is equal to the offset distance.

3 . The apparatus according to claim 2 , wherein each of the photosensitive units is square, and any two of the photosensitive units are of a same side length.

4 . The apparatus according to claim 1 , wherein n adjacent rows of photosensitive units are divided into a group, and the photosensitive units in each group are arranged side by side along a second direction, n being an integer greater than or equal to 2, and the second direction being perpendicular to the first direction; wherein in one group of photosensitive units, the photosensitive units in adjacent rows have the position offset in the first direction, and the photosensitive units in adjacent groups have no relative position offset on the whole.

5 . The apparatus according to claim 4 , wherein the photosensitive units in corresponding rows in the groups of photosensitive units are at a same position in the first direction.

6 . The apparatus according to claim 1 , wherein the adjacent photosensitive units comprise at least one of: the photosensitive units adjacent in the first direction, or the photosensitive units adjacent in a second direction.

7 . The apparatus according to claim 4 , wherein the first direction is a row direction of the photosensitive units arranged in an array, and the second direction is a column direction of the photosensitive units arranged in an array.

8 . The apparatus according to claim 1 , wherein a length of one row of photosensitive units is greater than a length of at least one side of the display panel.

9 . The apparatus according to claim 8 , wherein the length of one row of photosensitive units is greater than a sum of the length of at least one side of the display panel and the pitch between adjacent photosensitive units.

10 . The apparatus according to claim 1 , wherein the photosensitive unit is one of: a photo diode optical sensor, a charge coupled device image sensor, and a complementary metal oxide semiconductor image sensor.

11 . A method for detecting a display panel by using an optical detection apparatus, the optical detection apparatus comprising photosensitive units arranged in an array, wherein a minimum distance between adjacent photosensitive units is less than a sub-pixel size of the display panel, and the photosensitive units in adjacent rows have a position offset in a first direction, an offset distance corresponding to the position offset being less than the sub-pixel size of the display panel; wherein a pitch between adjacent photosensitive units is N times the minimum distance between the adjacent photosensitive units, N being an integer greater than or equal to 2; and the pitch between adjacent photosensitive units is an integral multiple of the offset distance, wherein the pitch between the adjacent photosensitive units is a distance between center points of the adjacent photosensitive units; the method comprising:
determining a movement route of the display panel based on a size relationship between the optical detection apparatus and the display panel; controlling the optical detection apparatus to acquire screen information of the display panel at a first position; controlling the display panel to move along the movement route, and controlling the optical detection apparatus to acquire screen information of the display panel again every time the display panel moves a first distance, until the respective acquired screen information collectively embodies a complete screen of the display panel; and performing optical detection on the display panel based on each of the acquired screen information.

12 . The method according to claim 11 , wherein determining the movement route of the display panel based on the size relationship between the optical detection apparatus and the display panel comprises:
if a length of one row of photosensitive units in the optical detection apparatus is not less than a length of a first side of the display panel, determining a route of a linear movement along an extension direction of a second side of the display panel as the movement route, wherein the first side and the second side are perpendicular to each other.

13 . The method according to claim 12 , wherein determining the movement route of the display panel based on the size relationship between the optical detection apparatus and the display panel further comprises:
if the length of one row of photosensitive units in the optical detection apparatus is less than a length of any side of the display panel, determining an S-shaped route as the movement route, wherein a starting point of the S-shaped route is a position of the display panel when a first corner of the display panel is covered by the optical detection apparatus, and an ending point of the S-shaped route is a position of the display panel when a second corner of the display panel is covered by the optical detection apparatus, the first corner and the second corner being two different corners of the display panel.

14 . The method according to claim 11 , wherein performing the optical detection on the display panel based on each of the acquired screen information comprises:
determining a corresponding relationship between each of the screen information and the display panel based on each of the acquired screen information; calculating optical data at a corresponding position of the display panel in combination with each of the screen information based on the corresponding relationship between each of the screen information and the display panel; and completing the optical detection on the display panel based on the optical data at the corresponding position of the display panel.

15 . The method according to claim 14 , wherein calculating the optical data at the corresponding position of the display panel in combination with each of the screen information based on the corresponding relationship between each of the screen information and the display panel comprises:
determining a number of subdivided regions corresponding to the photosensitive units based on a relationship between the first distance and a size of the photosensitive unit; and calculating the optical data at the corresponding position of the display panel in combination with each of the screen information based on the number of the subdivided regions.

16 . The method according to claim 11 , wherein the first distance is less than the sub-pixel size of the display panel.

17 . A computer device, comprising a processor and a memory, wherein
the memory is configured to store a software program; and the processor runs or execut

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Zhang Chenyang
• Li Fuqiang
• Wang Meili
• Wang Lei
• Feng Xuan
• Liang Xuan
• Wang Fei
• Zhao Xinxin

Classifications

• H10F39/18 Primary

  Complementary metal-oxide-semiconductor [CMOS] image sensors; Photodiode array image sensors · CPC title

• H10F39/15

  Charge-coupled device [CCD] image sensors · CPC title

• G01N2021/1772

  Array detector · CPC title

• G09F9/33

  being semiconductor devices, e.g. diodes · CPC title

• G01N21/17 Primary

  Systems in which incident light is modified in accordance with the properties of the material investigated (where the material investigated is optically excited causing a change in wavelength of the incident light G01N21/63) · CPC title