US 11,990,105 B2
Method and system of measuring display panel, and display device
Zhenli Song, Shenzhen (CN)
Assigned to HKC CORPORATION LIMITED, Shenzhen (CN)
Appl. No. 17/262,124
Filed by HKC CORPORATION LIMITED, Guangdong (CN)
PCT Filed Dec. 26, 2018, PCT No. PCT/CN2018/123973
§ 371(c)(1), (2) Date Jan. 21, 2021,
PCT Pub. No. WO2020/103283, PCT Pub. Date May 28, 2020.
Claims priority of application No. 201811386245.7 (CN), filed on Nov. 20, 2018.
Prior Publication US 2021/0264878 A1, Aug. 26, 2021
Int. Cl. G09G 5/10 (2006.01); G01M 11/08 (2006.01); G01N 21/59 (2006.01); G02F 1/13 (2006.01); G09G 3/36 (2006.01); G01N 21/95 (2006.01)
CPC G09G 5/10 (2013.01) [G01M 11/08 (2013.01); G01N 21/59 (2013.01); G02F 1/1309 (2013.01); G09G 3/3607 (2013.01); G01N 2021/9513 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/141 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of measuring a display panel, comprising:
determining a target position on the display panel that meets a preset condition by determining a first target position and a second target position on the display panel, wherein a connecting line of the first target position and the second target position is parallel to a row of sub-pixels, and wherein a distance between the first target position and the second target position is within a preset distance range;
measuring a brightness information at the target position under a constant applied voltage by:
measuring a first backlight brightness and a first display panel brightness at a first target position, wherein the first backlight brightness is a backlight brightness corresponding to the first target position when a liquid crystal panel is removed, and wherein the first display panel brightness is a brightness at the first target position of the display panel when the display panel retains an upper polarizer and a lower polarizer;
measuring a second backlight brightness and a second display panel brightness at a second target position, wherein the second backlight brightness is a backlight brightness corresponding to the second target position when a liquid crystal panel is removed, and wherein the second display panel brightness is a brightness at the second target position of the display panel when the display panel retains an upper polarizer and a lower polarizer;
measuring a third display panel brightness at the first target position, wherein the third display panel brightness is measured when the display panel removes an upper polarizer at the first target position;
measuring a fourth display panel brightness at the first target position, wherein the fourth display panel brightness is measured when the display panel removes a lower polarizer at the second target position;
measuring a fifth display panel brightness at the first target position, wherein the fifth display panel brightness is measured when the display panel removes an upper polarizer and a lower polarizer at the first target position; and
measuring a sixth display panel brightness at the first target position, wherein the sixth display panel brightness is measured when the display panel removes an upper polarizer and a lower polarizer at the second target position; and
calculating a display efficiency of the display panel according to the brightness information.