Patent ID: 11877492
Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. An organic light emitting diode (OLED) display device, comprising:
a substrate;
a pixel defining layer disposed on the substrate and provided with a plurality of first openings;
a black bank layer disposed on a surface of the pixel defining layer away from the substrate and provided with a plurality of second openings corresponding the first openings, wherein a width of the second openings is greater than a width of the first openings, so that each of parts of the pixel defining layer adjacent to the first openings and each of corresponding parts of the black bank layer adjacent to the second openings form a stepped structure;
a first thin film encapsulation sublayer covering the black bank layer, the pixel defining layer, and parts of the substrate in the first openings, wherein parts of the first thin film encapsulation sublayer corresponding to the stepped structures have a stepped shape;
a plurality of color resist layers disposed on parts of the first thin film encapsulation sublayer in the first openings;
a second thin film encapsulation sublayer covering the first thin film encapsulation sublayer and the color resist layers;
a third thin film encapsulation sublayer covering the second thin film encapsulation sublayer; and
a plurality of touch sensors disposed on the third thin film encapsulation sublayer,
wherein each of the touch sensors comprises a first metal layer, a first low light reflection film, a passivation layer, a second metal layer, and a second low light reflection film stacked in sequence.