Display substrate, display device, and display control method of display device

1. A display substrate, comprising a black matrix region, wherein a plurality of photosensitive circuits for realizing an optical remote control in a non-touch manner are in the black matrix region at a light exit side of the display substrate, the photosensitive circuits are directly disposed on a surface of the black matrix region close to the light exit side of the display substrate so that external light can illuminate the photosensitive circuit,

wherein the plurality of photosensitive circuits comprise a first group of photosensitive circuits and a second group of photosensitive circuits, the first group of photosensitive circuits intersecting with the second group of photosensitive circuits,

wherein a via hole is in the black matrix region, and one photosensitive circuit is electrically connected to an exterior of the display substrate via the via hole.

2. The display substrate according to claim 1 , wherein the plurality of photosensitive circuits are arranged in a matrix.

3. A display device, comprising a color filter substrate and an array substrate opposite to the color filter substrate,

wherein the color filter substrate comprises a black matrix region, wherein a plurality of photosensitive circuits for realizing an optical remote control in a non-touch manner are in the black matrix region at a light exit side of the color filter substrate, the photosensitive circuits are directly disposed on a surface of the black matrix region close to the light exit side of the color filter substrate so that external light can illuminate the photosensitive circuits,

wherein the plurality of photosensitive circuits comprise a first group of photosensitive circuits and a second group of photosensitive circuits, the first group of photosensitive circuits intersecting with the second group of photosensitive circuits,

wherein a via hole is in the black matrix region, and one photosensitive circuit is electrically connected to an exterior of the color filter substrate via the via hole,

wherein the plurality of photosensitive circuits are located at a side of the black matrix region away from the array substrate, and the plurality of photosensitive circuits are in direct contact with the black matrix region.

4. The display device according to claim 3 , wherein the color filter substrate comprises a protective layer covering the black matrix region, an opening is in the protective layer, a metal contact pad is at the opening, and the metal contact pad is electrically connected to one photosensitive circuit via a via hole in the black matrix region.

5. The display device according to claim 4 , wherein a common electrode layer is on the array substrate; and

wherein a photo spacer is between the color filter substrate and the array substrate, and wherein one end of the photo spacer is electrically connected to the metal contact pad, and the other end of the photo spacer is electrically connected to the common electrode layer.

6. The display device according to claim 5 , wherein the photo spacer comprises anisotropic conductive micro-particles.

7. The display device according to claim 5 , wherein the display device is a touch display device.

8. The display device according to claim 3 , wherein a plurality of pixels are on the color filter substrate, each of the pixels comprising a plurality of sub-pixels, and portions constituting the black matrix region are between adjacent sub-pixels.

9. The display device according to claim 3 , wherein each photosensitive circuit comprises a photoresistor string.

10. The display device according to claim 3 , further comprising a passivation layer and/or a gate insulation layer.

11. A display control method of the display device according to claim 3 , the method comprising:

detecting whether a current of one photosensitive circuit in the black matrix region of the display device changes in real time;

in response to change of the detected current, determining a position of an illumination point in the display device according to a position of the black matrix region where the current changes;

implementing a remote non-touch display control to the display device according to the position of the illumination point.

12. The display control method according to claim 11 , wherein the display device further has a touch function, and a remote non-touch function and the touch function are achieved in a time-sharing control manner.

13. The display control method according to claim 12 , wherein, before detecting whether the current of the photosensitive circuit in the black matrix region of the display device changes or not in real time, the method further comprises:

triggering the remote non-touch function of the display device.

14. The display control method according to claim 12 , wherein,

in response to the display device achieving the touch function, a common electrode layer receives a touch control signal; and

in response to the display device achieving the remote non-touch function, the common electrode layer receives a remote non-touch control signal.