US 9,812,068 B2
Method, device and system of detecting uniformity of thickness of a display screen
Jinye Zhu, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 14/443,527
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Oct. 11, 2014, PCT No. PCT/CN2014/088387
§ 371(c)(1), (2) Date May 18, 2015,
PCT Pub. No. WO2015/180367, PCT Pub. Date Dec. 3, 2015.
Claims priority of application No. 2014 1 0234495 (CN), filed on May 29, 2014.
Prior Publication US 2016/0049120 A1, Feb. 18, 2016
Int. Cl. G09G 3/34 (2006.01); G09G 3/20 (2006.01); G09G 3/36 (2006.01); G09G 3/00 (2006.01)
CPC G09G 3/3406 (2013.01) [G09G 3/006 (2013.01); G09G 3/2003 (2013.01); G09G 3/36 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/145 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A detecting method for detecting a uniformity of a thickness of a display screen, comprising:
extracting a preset brightness curve for each of moire stripes when the display screen displays a monocolour picture;
calculating an average position coordinate in a preset direction for each of the preset brightness curves;
calculating a deviation value of a position coordinate in the preset direction of a discrete point on each of the preset brightness curves with respect to the average position coordinate; and
for each of the preset brightness curves, when the deviation value exceeds a preset allowable deviation range, determining a thickness abnormal position of the display screen according to the position coordinate of the discrete points corresponding to the deviation value.