CN113703212A

CN113703212A - Display panel and display device

Info

Publication number: CN113703212A
Application number: CN202111010720.2A
Authority: CN
Inventors: 俞云
Original assignee: TCL Huaxing Photoelectric Technology Co Ltd
Current assignee: TCL Huaxing Photoelectric Technology Co Ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-11-26
Anticipated expiration: 2041-08-31
Also published as: CN113703212B

Abstract

The invention provides a display panel and a display device. The display panel comprises a liquid crystal layer, a first substrate, a second substrate, a sealing layer and a protective column. The sealing layer is disposed between the first substrate and the second substrate and surrounds the liquid crystal layer. The protective column is arranged on the surface, facing the sealing layer, of the first substrate and is positioned on one side, far away from the liquid crystal layer, of the sealing layer. And isolating the liquid medicine for removing the touch induction protective layer at the outer side of the protective column through the protective column to protect the sealing layer and the protective layer.

Description

Display panel and display device

Technical Field

The invention relates to the field of photoelectric display equipment, in particular to a display panel and a display device.

Background

In Touch On-cell technology, a Touch Sensor (Touch Sensor) layer is fabricated between a Color Filter (CF) and a polarizer. In the Touch On-cell process, a Touch sensing layer is generally required to be manufactured On a glass substrate of the existing color filter, and then the preparation of other film layers of the color filter is completed by turning over. Therefore, in the color filter manufacturing process and the subsequent box manufacturing process, the surface of the touch sensing layer directly contacts with the table top of the machine, the transmission roller and the like, and in order to prevent the surface of the touch sensing layer from being scratched, crushed and the like, a protective layer (PFA) needs to be manufactured On the surface of the touch sensing layer. After the color filter manufacturing process and the subsequent box forming manufacturing process are completed, the PFA layer on the surface of the touch sensing layer needs to be removed, so that the PFA layer is prevented from influencing the optical transmittance and the product quality, such as indentation and scratch on the surface.

In a large-sized and ultra-large-sized display panel, a PFA layer is generally required as a planarization layer on a TFT (Thin Film Transistor) side thereof. The PFA film layer at the edge area of the TFT substrate is also removed together when the PFA layer on the touch sensing layer is removed, so that part of the PFA layer below the sealing frame and on the Transfer Pad position is hollowed, and the reliability problem of the product is caused.

Disclosure of Invention

The invention aims to provide a display panel and a display device, which are used for solving the problem of product reliability caused by the fact that a protective layer below a sealing layer is damaged by liquid medicines for removing other film layers in the prior art.

In order to achieve the above object, the present invention provides a display panel including a liquid crystal layer, a first substrate, a second substrate, a sealing layer, and a protective column. The first substrate and the second substrate are oppositely arranged. The liquid crystal layer is arranged between the first substrate and the second substrate. The sealing layer is disposed between the first substrate and the second substrate and surrounds the liquid crystal layer. The protective column is arranged on the surface, facing the sealing layer, of the first substrate and is positioned on one side, far away from the liquid crystal layer, of the sealing layer.

Further, the protective column includes a first layer and a second layer. The first layer is arranged on the first substrate and is arranged on the same layer with the color resistance layer in the first substrate. The second layer is disposed on the first layer.

Further, an orthographic projection of the sealing layer on the first substrate coincides with an orthographic projection of the first layer on the first substrate.

Further, the first layer has a catch groove thereon, the catch groove faces the sealing layer, and the sealing layer fills the catch groove.

Further, the display panel has a display area, a first binding area and a second binding area. The first binding area is arranged on one side of the display area. The second binding region is arranged on one side of the first binding region far away from the first binding region.

The first substrate covers the display area, the first binding area, and the second binding area. The second substrate covers the display area and the first binding area. The sealing layer is positioned on one side of the first binding region close to the second binding region. A portion of the protective column is located within the first binding region and a remaining portion thereof is located within the second binding region.

Further, the width of the protective columns in the first binding region is greater than 80 microns and less than the total width of the protective columns.

Further, the first substrate includes a protective layer covering a surface of the first substrate facing the liquid crystal layer and extending from the display region to the first bonding region.

Further, the material of the first layer is the same as that of the color resistance layer in the first substrate; the second layer comprises an inorganic material therein.

Further, the sealing layer comprises conductive particles and colloid wrapping the conductive particles.

Furthermore, the display panel further comprises a touch sensing layer, and the touch sensing layer is arranged on one surface of the second substrate far away from the liquid crystal layer.

The invention also provides a display device which comprises the display panel.

The invention has the advantages that: according to the display panel and the display device provided by the invention, the protective columns are arranged on the outer sides of the sealing layer and the protective layer to protect the sealing layer and the protective layer, and the liquid medicine for removing the touch sensing protective layer is isolated on the outer sides of the protective columns on the premise of not increasing the manufacturing process, so that the sealing layer and the protective layer are prevented from being corroded by the liquid medicine and damaged, the sealing property and the stability of the sealing layer and the protective layer are improved, and the service life of the display panel is further prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a layered structure of a display panel in embodiment 1 of the present invention;

FIG. 2 is a schematic view of a layered structure of a first substrate in example 1 of the present invention;

FIG. 3 is a schematic view of a layered structure of a second substrate in embodiment 1 or 2 of the present invention;

fig. 4 is a schematic view of a layered structure of a touch sensing layer in embodiment 1 or 2 of the present invention;

fig. 5 is a schematic view of a layered structure of the display panel before the touch sensing protective layer is peeled off in embodiment 1 of the present invention;

FIG. 6 is a schematic view of a layered structure of a display panel in embodiment 2 of the present invention;

FIG. 7 is a schematic view of a layered structure of a first substrate in example 2 of the present invention;

fig. 8 is a schematic view of a layer structure of the display panel before the touch sensing protective layer is peeled off in embodiment 2 of the present invention.

The components in the figures are represented as follows:

a display panel 1; a display area 1A;

a first binding region 1B; a second binding region 1C;

a first substrate 10; a first base layer 11;

a first metal layer 12; a gate insulating layer 13;

a second metal layer 14; a passivation layer 15;

a color resist layer 16; a protective layer 17;

a temporary protective layer 17A; a via 18;

an electrode connection layer 19; a second substrate 20;

a second base layer 21; a black matrix 22;

an opening 23; a pixel electrode layer 24;

a sealing layer 30; the conductive particles 31;

a colloid 32; a liquid crystal layer 40;

a touch sensing layer 50; a first conductive layer 51;

a first insulating layer 52; the second conductive layer 53;

a second insulating layer 54; a first connection hole 55;

second connection hole 56; a touch electrode layer 57;

a touch sensing protective layer 58; a protective post 60;

a first layer 61; a second layer 62;

and a card slot 63.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are included to demonstrate that the invention can be practiced, and to provide those skilled in the art with a complete description of the invention so that the technical content thereof will be more clear and readily understood. The present invention may be embodied in many different forms of embodiments and should not be construed as limited to the embodiments set forth herein.

In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.

Furthermore, the following description of the various embodiments of the invention refers to the accompanying drawings that illustrate specific embodiments of the invention, by which the invention may be practiced. Directional phrases used in this disclosure, such as, for example, "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "side," and the like, refer only to the orientation of the appended drawings and are, therefore, used herein for better and clearer illustration and understanding of the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

When certain components are described as being "on" another component, the components can be directly on the other component; there may also be an intermediate member disposed on the intermediate member and the intermediate member disposed on the other member. When an element is referred to as being "mounted to" or "connected to" another element, they may be directly "mounted to" or "connected to" the other element or indirectly "mounted to" or "connected to" the other element through an intermediate element.

Example 1

The embodiment of the invention provides a display device, which comprises a display panel 1, wherein the display panel 1 provides a display picture for the display device. The display device can be any electronic product or component with a display function, such as a mobile phone, a notebook computer, a tablet computer, a television, and the like.

As shown in fig. 1, the display panel 1 has a display area 1A, a first bonding area 1B and a second bonding area 1C. The first binding region 1B is connected with one side of the display region 1A, and the second binding region 1C is arranged on one side, far away from the display region 1A, of the first binding region 1B.

The display panel 1 includes a first substrate 10, a second substrate 20, a liquid crystal layer 40, a sealing layer 30 and a touch sensing layer 50. The first substrate 10 and the second substrate 20 are stacked, the liquid crystal layer 40 and the sealing layer 30 are disposed between the first substrate 10 and the second substrate 20, and the touch sensing layer 50 is disposed on a surface of the second substrate 20 away from the liquid crystal layer 40.

As shown in fig. 1 and 2, the first substrate 10 includes a first base layer 11, a first metal layer 12, a gate insulating layer 13, a second metal layer 14, a passivation layer 15, a color resist layer 16, and a protective layer 17.

The first base layer 11 is a glass layer or a quartz layer, and covers the display region 1A, the first binding region 1B, and the second binding region 1C. The first metal layer 12 is disposed on one surface of the first base layer 11. A plurality of first traces are disposed in the first metal layer 12, and the first traces may be used as Gate (Gate) signal traces or common (Com) signal traces, etc. The gate insulating layer 13 is disposed on the first base layer 11 and covers the first metal layer 12. The second metal layer 14 is disposed on a surface of the gate insulating layer 13 away from the first metal layer 12. A plurality of second traces are disposed in the second metal layer 14, and the second traces can be used as data (Date) signal traces. The passivation layer 15 is disposed on the gate insulating layer 13 and covers the second metal layer 14. The gate insulating layer 13 and the passivation layer 15 may be made of inorganic materials such as silicon oxide or silicon nitride, and are used for insulating and protecting signal traces and preventing short circuit between the signal traces.

The color resistance layer 16 is disposed on a surface of the passivation layer 15 away from the second metal layer 14, the color resistance layer 16 includes a red color resistor, a green color resistor, and a blue color resistor, and the red color resistor, the green color resistor, and the blue color resistor are sequentially arranged in the display area 1A. The color resist layer 16 is used to pass light waves of corresponding color wavelength bands, thereby enabling the display panel 1 to realize color display.

The protective layer 17 is disposed On the color resist layer 16 of the display area 1A and the passivation layer 15 of the first binding area 1B, and the protective layer 17 is an organic protective layer (PFA).

As shown in fig. 1 and fig. 3, the second substrate 20 includes a second base layer 21, a black matrix 22 and a pixel electrode layer 24.

The second base layer 21 is also a glass layer or a quartz layer, and the second substrate 20 extends from the display region 1A to the first binding region 1B. The black matrix 22 is disposed on a surface of the second base layer 21 facing the first substrate 10, and has a plurality of openings 23, and each opening 23 corresponds to a color resistor. The black matrix 22 is made of opaque black resin, and is used to prevent light mixing between adjacent pixels and improve the color saturation of the display panel 1. The pixel electrode layer 24 is disposed on a surface of the black matrix 22 away from the second base layer 21, and is made of Indium Tin Oxide (ITO). When the pixel electrode layer 24 is powered on, an electric field is generated, and the electric field can drive liquid crystal molecules in the liquid crystal layer 40 to deflect, so that light passes through the liquid crystal layer 40, and the display panel 1 displays images.

As shown in fig. 1, the sealing layer 30 is located in the first bonding region 1B and is disposed at an edge of the second substrate 20. The sealing layer 30 is supported between the first substrate 10 and the second substrate 20, and encloses a sealed space with the first substrate 10 and the second substrate 20, and the sealed space is filled with a plurality of liquid crystal molecules, so as to form a liquid crystal layer 40 surrounded by the sealing layer 30.

As shown in fig. 1 and 4, the touch sensing layer 50 includes a first conductive layer 51, a first insulating layer 52, a second conductive layer 53, a second insulating layer 54, and a touch electrode layer 57.

The first conductive layer 51 is disposed on a surface of the second base layer 21 away from the black matrix 22. A plurality of third traces are arranged in the first conductive layer 51, and the third traces can be used as touch drive (TX) signal traces. The first insulating layer 52 is disposed on the second base layer 21 and covers the first conductive layer 51. The second conductive layer 53 is disposed on a surface of the first insulating layer 52 away from the first conductive layer 51. A plurality of second traces are disposed in the second conductive layer 53, and the second traces can be used as touch sensing (RX) signal traces. The second insulating layer 54 is disposed on the first insulating layer 52 and covers the second conductive layer 53. The first insulating layer 52 and the second insulating layer 54 may also be made of inorganic materials such as silicon oxide or silicon nitride, and are used for insulating and protecting signal traces and preventing short circuit between signal traces.

In the first bonding region 1B, the touch sensing layer 50 has a first connection hole 55 and a second connection hole 56, the first connection hole 55 sequentially penetrates through the second insulating layer 54 and the first insulating layer 52 to the surface of the first conductive layer 51, and the second connection hole 56 penetrates through the second insulating layer 54 to the surface of the second conductive layer 53. The touch electrode layer 57 is disposed on a surface of the second insulating layer 54 away from the second conductive layer 53, covers the first connection hole 55 and the second connection hole 56, and is electrically connected to the first conductive layer 51 and the second conductive layer 53.

As shown in fig. 1, the display panel 1 further includes a protective column 60. The protection pillar 60 is disposed on a surface of the first substrate 10 facing the sealing layer 30, and is located on a side of the sealing layer 30 away from the liquid crystal layer 40. The thickness of the protective post 60 is greater than the thickness of the protective layer 17. As shown in fig. 5, in the manufacturing process of the display panel 1, a touch sensing protection layer 58 is formed on the surface of the touch sensing layer 50 and a surface plate away from the second substrate 20 to protect the surface. After the preparation of other film layers of the display panel 1 is completed, the touch sensing protection layer 58 is stripped off, and the temporary protection layer 17A in the second binding region 1C is also removed. The protection pillars 60 are used to protect the sealing layer 30 and the protection layer 17 in the first substrate 10, prevent the sealing layer 30 and the protection layer 17 from being damaged by erosion of the liquid medicine for removing the touch sensing protection layer 58 and the temporary protection layer 17A, and improve the sealing property and stability of the sealing layer 30 and the protection layer 17.

As shown in fig. 1 and 2, the protective column 60 includes a first layer 61 and a second layer 62.

The first layer 61 is disposed on a surface of the passivation layer 15 facing the second substrate 20, and an end of the first layer 61 near the protective layer 17 is connected to the protective layer 17. The first layer 61 and the color resist layer 16 are prepared by the same process, and the material thereof can be the same as that of any one of the red color resist, the green color resist or the blue color resist. Preferably, in the embodiment of the present invention, the material of the first layer 61 is the same as the material of the blue color resist.

The second layer 62 is disposed on a surface of the first layer 61 remote from the passivation layer 15, and an end of the second layer 62 adjacent to the sealing layer 30 is connected to the sealing layer 30. The second layer 62 and the spacer (PS) in the display panel 1 are manufactured by the same process, and the material of the second layer is the same as that of the spacer, and may be an inorganic material.

The first layer 61 has a locking groove 63 therein, the locking groove 63 is located on a side of the first layer 61 close to the sealant 30 and faces the sealant 30, and the sealant 30 fills the locking groove 63. The bottom surface of the card slot 63 is flush with the top surface of the protective layer 17, i.e. the thickness of the first layer 61 below the card slot 63 is the same as the thickness of the protective layer 17. The side walls of the locking groove 63 are flush with the side walls of the second layer 62, i.e. the width of the second layer 62 is smaller than the thickness of the first layer 61. The clamping groove 63 reduces the thickness of the first layer 61 below the sealing layer 30, so that the problem of uneven pressing of the sealing layer 30 due to the structure protruding out of the protective layer 17 is solved, and the combination degree between the sealing layer 30 and the protective column 60 is improved. The card slot 63 may be manufactured by a Half Tone Mask (HTM) process or a Gray Tone Mask (GTM) process. Since the cost of the gray-scale photomask process is low, the gray-scale photomask process is preferably adopted.

A part of the protective post 60 is located in the first binding region 1B, another part thereof is located in the second binding region 1C, and the card slot 63 is also located in the first binding region 1B. In the first bonding region 1B, since the sealing layer 30 fills the card slot 63 in the first layer 61, an orthographic projection of the sealing layer 30 on the first substrate 10 coincides with an orthographic projection of the first layer 61 on the first substrate 10, and a width of the coinciding portion is greater than 80 μm and smaller than a total width of the protective column 60. The arrangement of overlapping the protective column 60 and the sealing layer 30 can effectively prevent the protective layer 17 below the sealing layer 30 from being exposed due to the position deviation of the sealing layer 30 in the preparation process.

In the display panel provided by the embodiment of the invention, the protective columns are arranged on the outer sides of the sealing layer and the protective layer to protect the sealing layer and the protective layer, and the liquid medicine for removing the touch sensing protective layer is isolated on the outer sides of the protective columns on the premise of not increasing the manufacturing process, so that the liquid medicine is prevented from corroding the sealing layer and the protective layer, the reliability and the stability of the sealing layer and the protective layer are improved, and the service life of the display panel is further prolonged.

Example 2

As shown in fig. 6, the display panel 1 has a display area 1A, a first bonding area 1B and a second bonding area 1C. The first binding region 1B is connected with one side of the display region 1A, and the second binding region 1C is arranged on one side, far away from the display region 1A, of the first binding region 1B.

As shown in fig. 6 and 7, the first substrate 10 includes a first base layer 11, a first metal layer 12, a gate insulating layer 13, a second metal layer 14, a passivation layer 15, a color resist layer 16, a protective layer 17 and an electrode connecting layer 19.

The first substrate 10 further includes a via 18, and the via 18 sequentially penetrates through the protection layer 17, the passivation layer 15 and the gate insulating layer 13 to the surface of the first metal layer 12. The via 18 is located in the first bonding region 1B and corresponds to the sealing layer 30. The electrode connecting layer 19 is disposed on the protective layer 17 in the first bonding region 1B, and covers the via hole 18 to be electrically connected to the first metal layer 12.

As shown in fig. 6 and fig. 3, the second substrate 20 includes a second base layer 21, a black matrix 22 and a pixel electrode layer 24.

As shown in fig. 6, the sealing layer 30 is located in the first bonding region 1B and is disposed at the edge of the second substrate 20. The sealing layer 30 is supported between the first substrate 10 and the second substrate 20, and encloses a sealed space with the first substrate 10 and the second substrate 20, and the sealed space is filled with a plurality of liquid crystal molecules, so as to form a liquid crystal layer 40 surrounded by the sealing layer 30. The sealing layer 30 includes a plurality of conductive particles 31 and a colloid 32 wrapping the conductive particles 31. The conductive particles 31 may be metal having excellent conductivity, such as gold, silver, or copper, and preferably, the conductive particles 31 are gold. After the sealing frame is pressed tightly, the conductive particles 31 are electrically connected to the electrode connection layer 19 in the first substrate 10 and the pixel electrode layer 24 in the second substrate 20, so that the pixel electrode layer 24 is electrically connected to the signal traces in the first metal layer 12.

As shown in fig. 6 and 4, the touch sensing layer 50 includes a first conductive layer 51, a first insulating layer 52, a second conductive layer 53, a second insulating layer 54, and a touch electrode layer 57.

As shown in fig. 6, the display panel 1 further includes a protective column 60. The protection pillar 60 is disposed on a surface of the first substrate 10 facing the sealing layer 30, and is located on a side of the sealing layer 30 away from the liquid crystal layer 40. The thickness of the protective post 60 is greater than the thickness of the protective layer 17. As shown in fig. 8, in the manufacturing process of the display panel 1, a touch sensing protection layer 58 is formed on the surface of the touch sensing layer 50 and a surface plate away from the second substrate 20 to protect the surface. After the preparation of other film layers of the display panel 1 is completed, the touch sensing protection layer 58 is stripped off, and the temporary protection layer 17A in the second binding region 1C is also removed. The protection pillars 60 are used to protect the sealing layer 30 and the protection layer 17 in the first substrate 10, prevent the sealing layer 30 and the protection layer 17 from being damaged by erosion of the liquid medicine for removing the touch sensing protection layer 58 and the temporary protection layer 17A, and improve the sealing property and stability of the sealing layer 30 and the protection layer 17.

As shown in fig. 6 and 7, the protective column 60 includes a first layer 61 and a second layer 62.

The first layer 61 is disposed on a surface of the passivation layer 15 facing the second substrate 20, and an end of the first layer 61 near the protection layer 17 is connected to the protection layer 17 or to a via 18. The first layer 61 and the color resist layer 16 are prepared by the same process, and the material thereof can be the same as that of any one of the red color resist, the green color resist or the blue color resist. Preferably, in the embodiment of the present invention, the material of the first layer 61 is the same as the material of the blue color resist. The second layer 62 is disposed on a surface of the first layer 61 remote from the passivation layer 15, and an end of the second layer 62 adjacent to the sealing layer 30 is connected to the sealing layer 30. The second layer 62 and the spacer (PS) in the display panel 1 are manufactured by the same process, and the material of the second layer is the same as that of the spacer, and may be an inorganic material.

The first layer 61 has a locking groove 63 therein, the locking groove 63 is located on a side of the first layer 61 close to the sealant 30 and faces the sealant 30, and the sealant 30 fills the locking groove 63. The bottom surface of the card slot 63 is flush with the top surface of the protective layer 17, i.e. the thickness of the first layer 61 below the card slot 63 is the same as the thickness of the protective layer 17. The side walls of the locking groove 63 are flush with the side walls of the second layer 62, i.e. the width of the second layer 62 is smaller than the thickness of the first layer 61. When one end of the first layer 61 close to the protection layer 17 is connected to a via 18, a side surface of the first layer 61 close to the via 18 is a sidewall of the via 18, and the electrode connection layer 19 may extend from the sidewall of the via 18 to a bottom surface of the card slot 63. The clamping groove 63 reduces the thickness of the first layer 61 below the sealing layer 30, so that the problem of uneven pressing of the sealing layer 30 due to the structure protruding out of the protective layer 17 is solved, and the combination degree between the sealing layer 30 and the protective column 60 is improved. The card slot 63 may be manufactured by a Half Tone Mask (HTM) process or a Gray Tone Mask (GTM) process. Since the cost of the gray-scale photomask process is low, the gray-scale photomask process is preferably adopted.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. A display panel, comprising:

a first substrate;

a second substrate disposed opposite to the first substrate;

the liquid crystal layer is arranged between the first substrate and the second substrate;

a sealing layer disposed between the first substrate and the second substrate and surrounding the liquid crystal layer;

and the protective column is arranged on the surface, facing the sealing layer, of the first substrate and is positioned on one side, far away from the liquid crystal layer, of the sealing layer.

2. The display panel of claim 1, wherein the protective column comprises:

the first layer is arranged on the first substrate and is arranged in the same layer with the color resistance layer in the first substrate;

a second layer disposed on the first layer.

3. The display panel of claim 2, wherein an orthographic projection of the sealing layer on the first substrate coincides with an orthographic projection of the first layer on the first substrate.

4. The display panel of claim 3, wherein the first layer has a card slot thereon, the card slot facing the sealing layer, and the sealing layer fills the card slot.

5. The display panel according to claim 1, characterized by having:

a display area;

the first binding area is arranged on one side of the display area;

the second binding area is arranged on one side of the first binding area far away from the first binding area;

the first substrate covers the display area, the first binding area and the second binding area;

the second substrate covers the display area and the first binding area;

the sealing layer is positioned on one side of the first binding region close to the second binding region;

a portion of the protective column is located within the first binding region and a remaining portion thereof is located within the second binding region.

6. The display panel of claim 5, wherein the guard post width in the first bonding region is greater than 80 microns and less than the total width of the guard post.

7. The display panel of claim 5, wherein the first substrate includes a protective layer covering a surface of the first substrate facing the liquid crystal layer and extending from the display region to the first bonding region.

8. The display panel according to claim 2, wherein a material of the first layer is the same as a material of a color resist layer in the first substrate; the second layer comprises an inorganic material therein.

9. The display panel of claim 1, further comprising a touch sensing layer disposed on a surface of the second substrate away from the liquid crystal layer; the sealing layer comprises conductive particles and colloid wrapping the conductive particles.

10. A display device characterized by comprising the display panel according to any one of claims 1 to 9.