Patent ID: 11887400
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A display substrate, comprising:
a base substrate;
a plurality of light emitters over the base substrate, configured to emit lights towards a pattern to be detected;
a plurality of light sensors over the base substrate, configured to sense lights reflected by the pattern to be detected; and
a top substrate being provided over the plurality of light emitters and the plurality of light sensors;
wherein:
each of at least one of the plurality of light emitters comprises a first electrode, a light-emitting layer, and a second electrode, sequentially over the base substrate;
each of at least one of the plurality of light sensors comprises a third electrode, a photosensitive layer composed of a solar thin film, and a fourth electrode, sequentially over the base substrate;
the first electrode and the third electrode are integral or the second electrode and the fourth electrode are integral;
an upper surface of the photosensitive layer has a larger distance H1 to a lower surface of the top substrate than a distance H2 from an upper surface of the light-emitting layer to the lower surface of the top substrate, to thereby facilitate reliability of the first electrode and the third electrode; wherein the photosensitive layer does not overlap with the light-emitting layer; wherein a lower surface of the photosensitive layer and a lower surface of the light-emitting layer are at a same plane;
the first electrode and the third electrode are integrated as a common cathode; and
a light shielding member is arranged over the photosensitive layer and configured to shield ambient light from interfering with light from the light-emitting layer reflected by towards the photosensitive layer to thereby generate electrical signals, thereby improving sensitivity of detecting the pattern.