DISPLAY PANEL AND DISPLAY DEVICE

• US 20200133038A1
• Filed: 11/28/2018
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Active Grant

• Current Assignee: HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Original Assignee: HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Inventors: Yang, Chunhui
• Granted Patent: US 10,739,629 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/133345 Insulating layers G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13394 spacers regularly patterned on the cell subtrate, e.g. walls, pillars G02F1/133377 takes precedence
• CPC Class Codes: G02F 1/13396 Spacers having different sizes

Abstract

A display panel and a display device, including a first substrate and a second substrate arranged opposite each other and spaced apart from each other, and a main spacer and a sub-spacer arranged between the first substrate and the second substrate, with bottom ends of both the main spacer and the sub-spacer arranged at the first substrate. In this display panel, by providing a part of a surface of the second substrate with a transparent conductive layer, the main spacer is able to directly press against the transparent conductive layer. By defining a groove in the second substrate with an opening thereof opposite the sub-spacer, a free end of the sub-spacer can be inserted into the groove when being applied with a supporting force. Thus, a step difference between the two spacers can increase by a thickness of the transparent conductive layer and a depth of the groove.

Claims

1. A display panel, comprising:

a first substrate;

a second substrate, arranged opposite to and spaced apart from the first substrate;

main spacers, arranged between the first substrate and the second substrate, with each main spacer having a bottom end arranged at the first substrate and a top end abutting against the second substrate; and

sub-spacers, arranged between the first substrate and the second substrate, with each sub-spacer having a bottom end arranged at the first substrate and a top end being a free end;

wherein

a part of a surface of one side of the second substrate adjacent to the first substrate is provided with a transparent conductive layer, and the second substrate defines therein a groove;

the transparent conductive layer is in abutting connection with the top end of the respective main spacer; and

an opening of the groove is arranged opposite the respective sub-spacer, and configured to allow the free end of the respective sub-spacer to be inserted therein.

2. The display panel according to claim 1, wherein a width of the groove gradually increase in a direction from the opening of the groove to a bottom of the groove.

3. The display panel according to claim 1, wherein a shape of a longitudinal section of the groove is identical with a shape of a longitudinal section of the free end of the sub-spacer, and the groove fits with the free end of the sub-spacer.

4. The display panel according to claim 1, wherein an absolute height of the respective sub-spacer is smaller or equal to an absolute height of the respective main spacer.

5. The display panel according to claim 4, wherein a top surface of the respective main spacer in contact with the transparent conductive layer is a curved surface.

6. The display panel according to claim 5, wherein the top surface of the respective main spacer is a semispherical, wavy, or serrated curved surface.

7. The display panel according to claim 4, wherein the first substrate is a color filter substrate, and the second substrate is an array substrate.

8. The display panel according to claim 7, wherein

the color filter substrate comprises a first substrate layer, a black matrix, a color resist layer, and an electrode layer arranged in sequence;

the color resist layer comprises a first color resist, a second color resist, and a third color resist of different colors arranged in a matrix;

the respective main spacer and the respective sub-spacer are arranged at the electrode layer and respectively correspond to any two of the first color resist, the second color resist, and the third color resist;

the array substrate comprises;

a second substrate layer, an insulating protective layer, and a passivation layer sequentially arranged in a direction facing the color filter substrate;

a part of a surface of the passivation layer is provided with the transparent conductive layer; and

the groove is defined in the passivation layer, or

the groove is defined in both the passivation layer and the insulating protective layer with the second substrate layer exposed.

9. The display panel according to claim 1, wherein a width of the groove gradually increase in a direction from the opening of the groove to a bottom of the groove;

and an absolute height of the respective sub-spacer is smaller or equal to an absolute height of the respective main spacer.

10. The display panel according to claim 9, wherein a top surface of the respective main spacer in contact with the transparent conductive layer is a curved surface.

11. The display panel according to claim 10, wherein the top surface of the respective main spacer is a semispherical, wavy, or serrated curved surface.

12. The display panel according to claim 9, wherein the first substrate is a color filter substrate, and the second substrate is an array substrate.

13. The display panel according to claim 12, wherein

the color filter substrate comprises a first substrate layer, a black matrix, a color resist layer, and an electrode layer arranged in sequence;

the color resist layer comprises a first color resist, a second color resist, and a third color resist of different colors arranged in a matrix;

the respective main spacer and the respective sub-spacer are arranged at the electrode layer and respectively correspond to any two of the first color resist, the second color resist, and the third color resist;

the array substrate comprises;

a second substrate layer, an insulating protective layer, and a passivation layer sequentially arranged in a direction facing the color filter substrate;

a part of a surface of the passivation layer is provided with the transparent conductive layer; and

the groove is defined in the passivation layer, or

the groove is defined in both the passivation layer and the insulating protective layer with the second substrate layer exposed.

14. The display panel according to claim 1, wherein a shape of a longitudinal section of the groove is identical with a shape of a longitudinal section of the free end of the sub-spacer, and the groove fits with the free end of the sub-spacer;

and an absolute height of the respective sub-spacer is smaller or equal to an absolute height of the respective main spacer.

15. The display panel according to claim 14, wherein a top surface of the respective main spacer in contact with the transparent conductive layer is a curved surface.

16. The display panel according to claim 15, wherein the top surface of the respective main spacer is a semispherical, wavy, or serrated curved surface.

17. The display panel according to claim 14, wherein the first substrate is a color filter substrate, and the second substrate is an array substrate.

18. The display panel according to claim 17, wherein

the color filter substrate comprises a first substrate layer, a black matrix, a color resist layer, and an electrode layer arranged in sequence;

the color resist layer comprises a first color resist, a second color resist, and a third color resist of different colors arranged in a matrix;

the respective main spacer and the respective sub-spacer are arranged at the electrode layer and respectively correspond to any two of the first color resist, the second color resist, and the third color resist;

the array substrate comprises;

a second substrate layer, an insulating protective layer, and a passivation layer sequentially arranged in a direction facing the color filter substrate;

a part of a surface of the passivation layer is provided with the transparent conductive layer; and

the groove is defined in the passivation layer, or

the groove is defined in both the passivation layer and the insulating protective layer with the second substrate layer exposed.

19. A display panel, comprising:

a color filter substrate;

an array substrate, arranged opposite to and spaced apart from the color filter substrate;

main spacers, arranged between the color filter substrate and the array substrate, with each main spacer having a bottom end arranged at the color filter substrate and a top end abutting against the array substrate; and

sub-spacers, arranged between the color filter substrate and the array substrate, with each sub-spacer having a bottom end arranged at the color filter substrate and a top end being a free end;

the array substrate comprising;

an array substrate layer, arranged opposite to and spaced apart from the color filter substrate; and

a dielectric layer, arranged at one side of the array substrate layer adjacent to the color filter substrate;

wherein

a part of a surface of one side of the dielectric layer adjacent to the color filter substrate is provided with a transparent conductive layer, and the dielectric layer defines therein a groove;

the transparent conductive layer is in abutting connection with a top end of the respective main spacer to increase a step difference between the respective main spacer and the respective sub-spacer;

an opening of the groove is arranged opposite the respective sub-spacer, and configured to allow the free end of the respective sub-spacer to be inserted therein; and

a depth of the groove is smaller or equal to a height of the dielectric layer.

20. A display device, comprising a display panel, and wherein the display panel comprises:

a first substrate;

a second substrate, arranged opposite to and spaced apart from the first substrate;

main spacers, arranged between the first substrate and the second substrate, with each main spacer having a bottom end arranged at the first substrate and a top end abutting against the second substrate; and

sub-spacers, arranged between the first substrate and the second substrate, with each sub-spacer having a bottom end arranged at the first substrate and a top end being a free end;

wherein

a part of a surface of one side of the second substrate adjacent to the first substrate is provided with a transparent conductive layer, and the second substrate defines therein a groove;

the transparent conductive layer is in abutting connection with the top end of the respective main spacer; and

an opening of the groove is arranged opposite the respective sub-spacer, and configured to allow the free end of the respective sub-spacer to be inserted therein.