Display device and wearable display device that are capable of quickly determining gaze positions and method for determining gaze positions

A wearable display device, comprising:

• a display device, a lens disposed on a display side of the display device, and a plurality of light-emitting elements disposed on an edge of the lens;
• wherein
• the display panel comprises:
• a display region and a peripheral region surrounding the display region;
• a plurality of photoelectric sensor assemblies, disposed in the peripheral region, wherein each of the photoelectric sensor assemblies is configured to receive an optical signal reflected via eyes of a user and convert the optical signal into an electric signal;
• and
• a processing circuit, connected to each of the photoelectric sensor assemblies, wherein the processing circuit is configured determine a gaze position of the eyes of the user on the display panel based on a signal value of the electric signal transmitted by each of the photoelectric sensor assemblies and a position of at least one of the photoelectric sensor assemblies;
• wherein the display panel comprises a plurality of subpixels disposed in the display region, each of the subpixels comprising at least one pixel transistor;
• each of the photoelectric sensor assemblies comprises:
• a switch transistor and a photodiode;
• wherein
• the photodiode comprises:
• a base, and a pixel electrode, a P-type material layer, a photosensitive layer, an N-type material layer and a common electrode that are disposed on a side of the base and successively stacked along a direction away from the base;
• the photodiode further comprises a drive chip disposed on the side of the base and a connection trace disposed on a same layer with the pixel electrode;
• wherein one end of the connection trace is connected to the drive chip, and another end of the connection trace is connected to the common electrode;
• and the drive chip is configured to supply a signal to the common electrode by the connection trace;
• and
• a first electrode of the switch transistor is electrically connected to the pixel electrode, and a second electrode of the switch transistor is electrically connected to the processing circuit;
• the switch transistor and the pixel transistor are prepared by a same preparation process, and the switch transistor is integrated into the display panel;
• and
• each of the photoelectric sensor assemblies comprise a first bonding pattern and a second bonding pattern that are electrically connected, wherein the first bonding pattern is electrically connected to the first electrode of the switch transistor, and the second bonding pattern is electrically connected to the pixel electrode of the photodiode;
• wherein an anisotropic conductive film is disposed between the first bonding pattern and the second bonding pattern, the first bonding pattern is bonded and connected to the second bonding pattern by the anisotropic conductive film, the second bonding pattern is disposed in a same layer with the pixel electrode of the photodiode, a gap is formed between the second bonding pattern and the pixel electrode, and an orthographic projection of the first bonding pattern on the display panel is overlapped with an orthographic projection of the second bonding pattern on the display panel;
• and
• light-exiting directions of the plurality of light-emitting elements face away from the display device.

A method for determining gaze positions, applicable to a display device, wherein the display device comprises:

• a display panel, comprising a display region and a peripheral region surrounding the display region;
• a plurality of photoelectric sensor assemblies, disposed in the peripheral region, wherein each of the photoelectric sensor assemblies is configured to receive an optical signal reflected via eyes of a user and convert the optical signal into an electric signal;
• and
• a processing circuit, connected to each of the photoelectric sensor assemblies, wherein the processing circuit is configured determine a gaze position of the eyes of the user on the display panel based on a signal value of the electric signal transmitted by each of the photoelectric sensor assemblies and a position of at least one of the photoelectric sensor assemblies;
• wherein the display panel comprises a plurality of subpixels disposed in the display region, each of the subpixels comprising at least one pixel transistor;
• each of the photoelectric sensor assemblies comprises:
• a switch transistor and a photodiode;
• wherein
• the photodiode comprises:
• a base, and a pixel electrode, a P-type material layer, a photosensitive layer, an N-type material layer and a common electrode that are disposed on a side of the base and successively stacked along a direction away from the base;
• the photodiode further comprises a drive chip disposed on the side of the base and a connection trace disposed on a same layer with the pixel electrode;
• wherein one end of the connection trace is connected to the drive chip, and another end of the connection trace is connected to the common electrode;
• and the drive chip is configured to supply a signal to the common electrode by the connection trace;
• and
• a first electrode of the switch transistor is electrically connected to the pixel electrode, and a second electrode of the switch transistor is electrically connected to the processing circuit;
• the switch transistor and the pixel transistor are prepared by a same preparation process, and the switch transistor is integrated into the display panel;
• and
• each of the photoelectric sensor assemblies comprise a first bonding pattern and a second bonding pattern that are electrically connected, wherein the first bonding pattern is electrically connected to the first electrode of the switch transistor, and the second bonding pattern is electrically connected to the pixel electrode of the photodiode;
• wherein an anisotropic conductive film is disposed between the first bonding pattern and the second bonding pattern, the first bonding pattern is bonded and connected to the second bonding pattern by the anisotropic conductive film, the second bonding pattern is disposed in a same layer with the pixel electrode of the photodiode, a gap is formed between the second bonding pattern and the pixel electrode, and an orthographic projection of the first bonding pattern on the display panel is overlapped with an orthographic projection of the second bonding pattern on the display panel;
• the method comprising:
• receiving an optical signal reflected via eyes of a user;
• converting the optical signal into an electric signal;
• and
• determining a gaze position of the eyes of the user on a display panel based on a signal value of the electric signal and a position of at least one photoelectric sensor assembly.