US 12,068,214 B2
Display panel with grooves and manufacturing method thereof
Peng Hu, Hubei (CN); Yanqiang Duan, Hubei (CN); and Congcong Jiang, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
Appl. No. 17/419,353
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Hubei (CN)
PCT Filed Apr. 26, 2021, PCT No. PCT/CN2021/089974
§ 371(c)(1), (2) Date Jun. 29, 2021,
PCT Pub. No. WO2022/222164, PCT Pub. Date Oct. 27, 2022.
Claims priority of application No. 202110415845.7 (CN), filed on Apr. 19, 2021.
Prior Publication US 2022/0359330 A1, Nov. 10, 2022
Int. Cl. H01L 23/31 (2006.01); H01L 27/12 (2006.01)
CPC H01L 23/3142 (2013.01) [H01L 27/1218 (2013.01); H01L 27/1262 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display panel, comprising a display area and a frame area surrounding the display area, wherein the frame area is provided with a corner-cutting area, and the display panel comprises:
a flexible substrate, wherein a first groove is defined in the flexible substrate, the first groove is located at an edge of the corner-cutting area away from the display area, and a side wall of the first groove is a semi-closed structure;
a buffer layer disposed on the flexible substrate;
an inorganic encapsulation layer disposed on an upper surface and a lateral surface of the buffer layer and disposed in the first groove; and
a sacrificial layer disposed on the inorganic encapsulation layer in the first groove and filling the first groove;
wherein a length of a part of the buffer layer located in the corner cutting area is less than a length of a part of the flexible substrate located in the corner-cutting area.