Stereoscopic display device, fabrication method and stereoscopic display method

1. A stereoscopic display device, comprising: a control device, a display screen and a substrate,

wherein the control device is provided between the display screen and the substrate, and the control device is configured to adjust a distance between the display screen and the substrate,

wherein the control device includes:

at least one telescopic member, provided between the substrate and the display screen, and including:

an extending member, including one end close to the substrate and the other end away from the substrate;

a fixed portion, with an end connected with the substrate,

wherein a distance between the other end of an extension member and an end of the fixed portion away from the substrate is changeable,

wherein the display screen is formed by a plurality of spliced display units, each of the plurality of spliced display units corresponds to a plurality of telescopic members, each of the spliced display units comprises a plurality of pixels, each of the plurality of telescopic members corresponds to one or more of the plurality of pixels,

wherein at least two of the plurality of telescopic members corresponding to one of the plurality of spliced display units are adjusted, to adjust distances between pixels corresponding to the at least two telescopic members and the substrate, so that the spliced display unit is capable of having a protrusion portion and a recession portion at the same time,

wherein a number of the fixed portions of the control device is smaller than a number of pixels of the display screen,

wherein a ratio of the number of the fixed portions of the control device to the number of the pixels of the display screen is 1:100 to 1:1000.

2. The stereoscopic display device according to claim 1 , wherein the fixed portion is a hollow base that sleeves the extending member, a bottom portion of the hollow base is connected with the substrate, and the extending member is movable with respect to the hollow base, to change a distance between a portion of the display screen corresponding to the extending member and the substrate.

3. The stereoscopic display device according to claim 2 , wherein the extending member extends from a top portion of the hollow base, so that a portion of the display screen corresponding to the extending member moves away from the substrate under an action of a pushing force of the extending member, when the extending member extends from the top portion of the hollow base, and a portion of the display screen corresponding to the extending member moves close to the substrate when the extending member retracts to the hollow base.

4. The stereoscopic display device according to claim 2 , wherein the hollow base is an electromagnetic coil, and the extending member is a magnet body; when the electromagnetic coil is energized, a magnetic field is generated; and the magnet body extends from or retracts to the electromagnetic coil under an action of the magnetic field.

5. The stereoscopic display device according to claim 4 , wherein the magnet body is a cylindrical structure whose outer surface is provided with a first thread, and an inner surface of the electromagnetic coil is provided with a second thread matching the first thread.

6. The stereoscopic display device according to claim 1 , wherein a protective layer is provided on a surface of the extending member opposite to the display screen.

7. The stereoscopic display device according to claim 1 , wherein the display units which are adjacent to each other are connected with each other through mutually engaged grooves or through mutually embedded concave-and-convex slide rails.

8. The stereoscopic display device according to claim 1 , wherein the control device receives an electrical signal sent by the substrate, so that the control device adjusts the distance between the substrate and the display screen according to the electrical signal, and the electrical signal matches a stereoscopic display feature displayed by the display screen.

9. The stereoscopic display device according to claim 1 , wherein the display screen is a flexible screen.

10. The stereoscopic display device according to claim 1 , wherein the substrate is a TFT substrate.

11. The stereoscopic display device according to claim 1 , wherein the substrate includes a plurality of seamlessly spliced TFT substrates.

12. A stereoscopic display method, which is used in the stereoscopic display device according to claim 1 , the method comprising:

acquiring an image to be displayed on a display screen;

extracting a stereoscopic display feature in the image; and

obtaining a driving signal of a control device according to the stereoscopic display feature, so that the control device adjusts a distance between a substrate and the display screen according to the driving signal.

13. The stereoscopic display method according to claim 12 , wherein the obtaining a driving signal of a control device according to the stereoscopic display feature, so that the control device adjusts a distance between a substrate and the display screen according to the driving signal, includes:

generating a stereoscopic display signal according to the stereoscopic display feature; and

converting the stereoscopic display signal into the driving signal of the control device.

14. The stereoscopic display method according to claim 13 , wherein the control device includes:

at least one telescopic member,

the converting the stereoscopic display signal into the driving signal of the control device, so that the control device adjusts the distance between the substrate and the display screen according to the driving signal, includes:

converting the stereoscopic display signal into a driving signal in one-to-one correspondence with the at least one telescopic member.

15. A fabrication method of the stereoscopic display device according to claim 1 , comprising:

fabricating a substrate and a control device by using a semiconductor fabrication process;

providing a display screen; and

cell-assembling the display screen with the substrate on which the control device is provided.

16. The fabrication method according to claim 15 , wherein the display screen is formed by a plurality of spliced display unit,

the providing the display screen includes:

providing a plurality of the display units; and

splicing the plurality of display units into the display screen.