Display panel support and display device

1. A display panel support, comprising a first support, a second support, a third support, and a control circuit, wherein the third support has one end rotatably connected to the first support and another end rotatably connected to the second support;

wherein the first support and the second support have a same structure, and a first support plate is provided above both the first support and the second support;

wherein the third support has a slide rail perpendicular to the first support plate, a second support plate is disposed at an upper end of the slide rail, and the second support plate is parallel to a bottom of the third support and capable of moving up and down along the slide rail;

wherein a first magnet is disposed on a lower surface of the second support plate; and a second magnet is provided at a bottom of the third support, an N pole of the first magnet corresponds to an N pole of the second magnet, and an S pole of the first magnet corresponds to an S pole of the second magnet;

wherein the first magnet comprises a bar magnet, a U-shaped magnet, or an electromagnet; and/or the second magnet comprises a bar magnet, a U-shaped magnet, or an electromagnet;

wherein the control circuit is connected to opposite ends of the second magnet; and

wherein the control circuit is a series circuit and further comprises: a power supply, a switch, a resistor, and a sliding rheostat connected in series in the control circuit.

2. The display panel support according to claim 1 , wherein

a spring is disposed between the second support plate and the third support.

3. The display panel support according to claim 1 , further comprising a control system and an angle sensor, wherein the control system is configured to control the control circuit to turn on or off, and the angle sensor is configured to obtain an angle between the first support and the second support.

4. The display panel support according to claim 1 , wherein

the control system comprises a processor and a database, and the database is configured to store the angle obtained by the angle sensor;

when the angle is greater than 0°, the processor outputs an instruction to turn on the switch, the control system controls the control circuit to turn on the switch and move the sliding rheostat, and the second magnet starts to work; and

when the angle is 180°, the sliding rheostat has a maximum resistance value.

5. A display device, comprising a display panel support and a display panel disposed on the display panel support, wherein

the display panel support comprises a first support, a second support, a third support, and a control circuit, wherein the third support has one end rotatably connected to the first support and another end rotatably connected to the second support;

wherein the first support and the second support have a same structure, and a first support plate is provided above both the first support and the second support;

wherein the third support has a slide rail perpendicular to the first support plate, a second support plate is disposed at an upper end of the slide rail, and the second support plate is parallel to a bottom of the third support and capable of moving up and down along the slide rail;

wherein a first magnet is disposed on a lower surface of the second support plate; and a second magnet is provided at a bottom of the third support, an N pole of the first magnet corresponds to an N pole of the second magnet, and an S pole of the first magnet corresponds to an S pole of the second magnet;

wherein the first magnet comprises a bar magnet, a U-shaped magnet, or an electromagnet; and/or the second magnet comprises a bar magnet, a U-shaped magnet, or an electromagnet;

wherein the control circuit is connected to opposite ends of the second magnet; and

wherein the control circuit is a series circuit and further comprises: a power supply, a switch, a resistor, and a sliding rheostat, which are connected in series in the control circuit.

6. The display device according to claim 5 , wherein:

a spring is disposed between the second support plate and the third support.

7. The display device according to claim 5 , further comprising a control system and an angle sensor, wherein the control system is configured to control on and off of the control circuit, and the angle sensor is configured to obtain an angle between the first support and the second support.

8. The display device according to claim 5 , wherein:

the control system comprises a processor and a database, and the database is configured to store the angle obtained by the angle sensor;

when the angle is greater than 0°, the processor outputs an instruction to turn on the switch, the control system controls the control circuit to turn on the switch and move the sliding rheostat, and the second magnet starts to work; and

when the angle is 180°, the sliding rheostat has a maximum resistance value.

9. The display device according to claim 5 , wherein:

the display panel has a bending portion corresponding to the third support.