Display panel and method of manufacturing same, and display device

1 . A display panel, comprising:

a display panel body and a backplane arranged on a backlight side of the display panel body, wherein the display panel body comprises a display area, a bending area, and a bonding area, and the bending area is located between the display area and the bonding area; and

a heat-sensitive adhesive layer disposed between the backplane and the display panel body; wherein a state of the heat-sensitive adhesive layer varies with temperature, the heat-sensitive adhesive layer is configured to, in a first state, have a first viscosity to the display panel body, and in a second state, have a second viscosity to the display panel body; and the second viscosity is greater than the first viscosity;

wherein the heat-sensitive adhesive layer comprises an adhesive layer and temperature-responsive polymers, wherein in the first state, the temperature-responsive polymers are aggregated on a surface of the adhesive layer close to the display panel body, and in the second state, the temperature-responsive polymers are dispersed in the adhesive layer;

wherein the display panel body comprises a base substrate, and the backplane is attached to the base substrate through the heat-sensitive adhesive layer, wherein each of the temperature-responsive polymers and the base substrate is hydrophilic; and

wherein a material of the temperature-responsive polymers is (PEO-b-PNIPAM)-g-PBAMO, and the base substrate is made of polyimide.

2 . The display panel of claim 1 , wherein a length of the bending area is less than or equal to 0.7 millimeters (mm).

3 . The display panel of claim 2 , wherein the backplane comprises a notch located in the bending area, and the notch is formed by a laser process.

4 . The display panel of claim 3 , wherein the laser process is a femtosecond laser process.

5 . A method of manufacturing a display panel, comprising:

providing a display panel body, wherein the display panel body comprises a display area, a bending area, and a bonding area, and the bending area is located between the display area and the bonding area;

providing a backplane, forming a heat-sensitive adhesive layer on a side of the backplane at a first temperature, and attaching the backplane to a backlight side of the display panel body through the heat-sensitive adhesive layer, wherein the backplane is arranged in the display area, the bending area, and the bonding area, wherein a state of the heat-sensitive adhesive layer varies with temperature, in a first state, the heat-sensitive adhesive layer has a first viscosity to the display panel body;

forming, by performing a laser process on the backplane in the bending area to remove the backplane in the bending area, a first backplane in the display area, a second backplane in the bonding area, and a notch in the bending area; and

performing defoaming treatment on the first backplane in the display area and the second backplane in the bonding area, and maintaining a second temperature for a preset time, so that the heat-sensitive adhesive layer changes from the first state to a second state, wherein in the second state, the heat-sensitive adhesive layer has a second viscosity to the display panel body, and the second viscosity is greater than the first viscosity;

wherein the heat-sensitive adhesive layer comprises an adhesive layer and temperature-responsive polymers, wherein in the first state, the temperature-responsive polymers are aggregated on a surface of the adhesive layer close to the display panel body, and in the second state, the temperature-responsive polymers are dispersed in the adhesive layer;

wherein the display panel body comprises a base substrate, and the backplane is attached to the base substrate through the heat-sensitive adhesive layer, wherein each of the temperature-responsive polymers and the base substrate is hydrophilic; and

wherein a material of the temperature-responsive polymers is (PEO-b-PNIPAM)-g-PBAMO, and the base substrate is made of polyimide.

6 . The method of manufacturing the display panel of claim 5 , wherein the first temperature ranges from 20° C. to 30° C., the first viscosity is 50-100 gram-force/inch (gf/inch), and the laser process is a femtosecond laser process, wherein the second temperature is greater than or equal to 50° C., the second viscosity is greater than or equal to 500 gf/inch, and the preset time is greater than or equal to 15 minutes.

7 . The method of manufacturing the display panel of claim 5 , wherein a length of the bending area is less than or equal to 0.7 millimeters (mm).

8 . The method of manufacturing the display panel of claim 7 , wherein the backplane comprises a notch located in the bending area, and the notch is formed by a laser process.

9 . The method of manufacturing the display panel of claim 8 , wherein the laser process is a femtosecond laser process.

10 . A display device, comprising:

a casing and a display panel, the casing defining an accommodating space, and the display panel being disposed in the accommodating space, wherein the display panel comprises a display panel body and a backplane arranged on a backlight side of the display panel body, wherein the display panel body comprises a display area, a bending area, and a bonding area, and the bending area is located between the display area and the bonding area;

wherein the display panel further comprises a heat-sensitive adhesive layer disposed between the backplane and the display panel body; wherein a state of the heat-sensitive adhesive layer varies with temperature, the heat-sensitive adhesive layer is configured to, in a first state, have a first viscosity to the display panel body, and in a second state, have a second viscosity to the display panel body; and the second viscosity is greater than the first viscosity;

wherein the heat-sensitive adhesive layer comprises an adhesive layer and temperature-responsive polymers, wherein in the first state, the temperature-responsive polymers are aggregated on a surface of the adhesive layer close to the display panel body, and in the second state, the temperature-responsive polymers are dispersed in the adhesive layer;

wherein the display panel body comprises a base substrate, and the backplane is attached to the base substrate through the heat-sensitive adhesive layer, wherein each of the temperature-responsive polymers and the base substrate is hydrophilic; and

wherein a material of the temperature-responsive polymers is (PEO-b-PNIPAM)-g-PBAMO, and the base substrate is made of polyimide.

11 . The display device of claim 10 , wherein a length of the bending area is less than or equal to 0.7 millimeters (mm).

12 . The display device of claim 11 , wherein the backplane comprises a notch located in the bending area, and the notch is formed by a laser process.

13 . The display device of claim 12 , wherein the laser process is a femtosecond laser process.