Patent ID: 11942491
Assignee: ENKRIS SEMICONDUCTOR, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 3:
4. A display apparatus, comprising:
a GaN-based image sensor comprising:
a substrate, wherein the substrate comprises a light sensing processing circuit;
a metal interconnection layer, located on a surface of the substrate and internally provided with a metal interconnection structure; and
a plurality of light sensing units located on the metal interconnection layer, wherein for each of the plurality of light sensing units, the light sensing unit comprises: a red light sensing sub-unit, a green light sensing sub-unit and a blue light sensing sub-unit; materials of a red light sensing layer of the red light sensing sub-unit, a green light sensing layer of the green light sensing sub-unit, and a blue light sensing layer of the blue light sensing sub-unit are all gallium nitride(GaN)-based materials containing indium(In); the materials of the red light sensing layer, the green light sensing layer and the blue light sensing layer contain different contents of In, enabling the red light sensing sub-unit, the green light sensing sub-unit and the blue light sensing sub-unit to generate or not generate light sensing electrical signals in response to different wave lengths of received light; and the red light sensing sub-unit, the green light sensing sub-unit and the blue light sensing sub-unit are electrically connected to the light sensing processing circuit through the metal interconnection structure to obtain a blue light incidence signal, a green light incidence signal and a red light incidence signal;

a display drive circuit, wherein an input end of the display drive circuit receives the red light incidence signal, the green light incidence signal and the blue light incidence signal of the light sensing unit in a first region from the light sensing processing circuit, and correspondingly generates a red display drive signal, a green display drive signal and a blue display drive signal; and
an output end of the display drive circuit is connected with the metal interconnection structure, and the red display drive signal, the green display drive signal and the blue display drive signal are transmitted to a red light-emitting sub-unit, a green light-emitting sub-unit and a blue light-emitting sub-unit in a second region through the metal interconnection structure; wherein, the red light-emitting sub-unit is the red light sensing sub-unit, the green light-emitting sub-unit is the green light sensing sub-unit and the blue light-emitting sub-unit is the blue light sensing sub-unit.