CN112164308B

CN112164308B - Display panel and display device

Info

Publication number: CN112164308B
Application number: CN202010880982.3A
Authority: CN
Inventors: 赵文炎
Original assignee: Kunshan Govisionox Optoelectronics Co Ltd
Current assignee: Kunshan Govisionox Optoelectronics Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2022-09-06
Anticipated expiration: 2040-08-27
Also published as: CN112164308A

Abstract

The application provides a display panel and a display device, wherein the display panel comprises a polaroid arranged on one side of a light-emitting surface of the display panel, and the polaroid comprises a first surface and a second surface which are oppositely arranged in the thickness direction of the polaroid and a side surface which is connected with the first surface and the second surface; and the orthographic projection of at least part of side face of the polaroid on the light-emitting face is a plane. The influence of the polaroid at the inclined plane position on the inorganic film layer below can be reduced in the mode.

Description

Display panel and display device

Technical Field

The application belongs to the technical field of display, and particularly relates to a display panel and a display device.

Background

The falling ball impact resistance is an important reference index for the display panel, and has important significance for normal display of the display panel. When the falling ball impact resistance of the display panel is not strong, if objects such as small balls fall on the surface of the display panel, bad phenomena such as bright lines and abnormal display can be caused, and the use experience of customers is influenced.

Research shows that when the display panel is impacted by falling balls, the edge of the polaroid has stress concentration, and the inorganic film layer below the edge of the polaroid is easy to break.

Disclosure of Invention

The application provides a display panel and display device can set up the at least one side of polaroid into the inclined plane to reduce the influence of this inclined plane position department polaroid to the inorganic rete in below.

In order to solve the technical problem, the application adopts a technical scheme that: provided is a display panel including: the polaroid comprises a first surface and a second surface which are oppositely arranged in the thickness direction of the polaroid and a side surface which is connected with the first surface and the second surface; and the orthographic projection of at least part of the side surface of the polaroid on the light-emitting surface is a plane.

Wherein the at least part of the side surface comprises a bevel.

Wherein the included angle formed by the inclined surface and one of the first surface and the second surface is less than or equal to 45 degrees.

Wherein the at least part of the side surface further comprises a plane perpendicular to the first surface.

The display panel comprises a display area and a non-display area, and the projection of at least part of the side surface of the polarizer, which is positioned in the non-display area, on the light-emitting surface is a plane.

Wherein the part of the polarizer in the non-display area comprises a first area and a second area which are connected with each other, and the first area is close to the display area relative to the second area; the first region is filled with thermal barrier particles.

And the second region is filled with heat conducting particles.

Wherein, at least one side of the polaroid is an inclined plane; preferably, the surface of the inclined surface faces the light-emitting side direction.

The non-display area of the display panel is also provided with an IC chip, and the orthographic projection of the side face, close to the IC chip, of the polaroid on the light-emitting face is a plane.

In order to solve the technical problem, the other technical scheme adopted by the application is as follows: there is provided a display device comprising the display panel described in any of the above embodiments.

Being different from the prior art situation, the beneficial effect of this application is: the projection of at least part of the side face of the polarizer arranged on one side of the light-emitting face on the light-emitting face in the display panel is a plane. That is, the thickness of the polarizer corresponding to the partial side surface is smaller than that of the polarizer at the non-side surface. When the display panel is impacted by falling balls, the tensile stress of the polaroid at the part of the side surface to the inorganic film layer below the polaroid is reduced, so that the probability of breakage of the inorganic film layer is reduced, and the falling ball impact resistance of the display panel is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of another embodiment of a display panel according to the present application;

FIG. 3 is a schematic structural diagram of another embodiment of a display panel of the present application;

FIG. 4 is a schematic top view of one embodiment of the display panel of FIG. 1;

FIG. 5 is a schematic structural diagram of another embodiment of a display panel according to the present application;

FIG. 6 is a schematic structural diagram of an embodiment of a laser cutting apparatus;

FIG. 7 is a schematic structural diagram of another embodiment of a display panel according to the present application;

FIG. 8 is a schematic structural diagram of another embodiment of a display panel of the present application;

FIG. 9 is a schematic structural diagram of another embodiment of a display panel according to the present application;

fig. 10 is a schematic structural diagram of an embodiment of a display device according to the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure. The display panel 10 may be an OLED display panel or the like, and includes a polarizer 100 disposed on a light emitting surface side of the display panel 10, where the polarizer 100 specifically includes a first surface 1000 and a second surface 1002 disposed opposite to each other in a thickness direction (i.e., a direction indicated by an arrow in fig. 1) of the polarizer, and a side surface 1004 connecting the first surface 1000 and the second surface 1002; the first surface 1000 and the second surface 1002 may be parallel or approximately parallel to each other, and an orthogonal projection of at least a portion of the side 1004 of the polarizer 100 on the light exit surface is a plane. That is, the portion of side 1004 corresponds to a polarizer 100 having a thickness that is less than the thickness of the polarizer 100 at the non-side. When the display panel 10 is impacted by a ball drop, the tensile stress of the polarizer 100 on the portion of the side 1004 to the inorganic film layer thereunder is reduced, so as to reduce the probability of breaking the inorganic film layer, thereby improving the anti-ball drop impact capability of the display panel.

Preferably, at least a portion of the side 1004 of the polarizer 100 includes the bevel 10040. The definition of the bevel 10040 refers to the surface being at an angle to the first surface 1000 and the second surface 1002, and the angle being different from 0 ° and 90 °. The surface of the inclined plane 1004 may be a flat surface or an uneven surface. When the display panel 10 is impacted by falling ball, the tensile stress of the polarizer 100 at the position of the inclined plane 10040 to the inorganic film layer therebelow is reduced, so as to reduce the probability of breaking the inorganic film layer, thereby improving the falling ball impact resistance of the display panel 10. Of course, in other embodiments, at least a portion of the side 1004 of the polarizer 100 may also include a curved surface.

In this embodiment, the polarizer 100 may be formed by laminating a plurality of films in the thickness direction thereof. For example, the polarizer 100 may be formed by sequentially stacking an adhesive layer PSA, 1/4 glass slide, an adhesive layer PSA, a linear polarizer (e.g., PVA), and a hardening layer. Of course, in other embodiments, the polarizer 100 may also be formed by stacking other layers in sequence, which is not limited in this application.

Preferably, as shown in FIG. 1, at least one side 1004 of the polarizer 100 is a whole inclined plane 10040. This design can make the polarizer 100 at the position of the inclined plane 10040 have lower tensile stress to the inorganic film layer therebelow. In addition, when the surface of the inclined plane 10040 faces the light emitting side, the tensile stress generated by the polarizer 100 on the inorganic film layer therebelow can be reduced when the display panel is impacted by an external force, so as to reduce the probability of breaking the inorganic film layer, thereby improving the anti-falling ball impact capability of the display panel 10.

Of course, in other embodiments, the design of the side 1004 of the polarizer 100 may be other; for example, as shown in fig. 2, fig. 2 is a schematic structural diagram of another embodiment of the display panel of the present application. At least one side 1004a of the polarizer 100a comprises a partial bevel 10040a and a partial vertical plane 10042a, wherein the partial vertical plane 10042a can be perpendicular to the first surface 1000a and the second surface 1002 a.

For another example, as shown in fig. 3, fig. 3 is a schematic structural diagram of another embodiment of the display panel of the present application. At least one side 1004b of polarizer 100b is formed by a plurality of inclined planes 10040b being connected to each other. The included angles between the plurality of inclined surfaces 10040b and the first surface 1000b may sequentially increase. Alternatively, the plurality of inclined surfaces 10040b can vary in inclination direction, for example, the plurality of inclined surfaces 10040b comprises two inclined surfaces, a first inclined surface inclined in a right-down direction along the first surface 1000b, and a second inclined surface inclined in a left-down direction. Preferably, in the present embodiment, an angle formed between the inclined surface 10040 disposed on the polarizer 100 and one of the first surface 1000 and the second surface 1002 is less than or equal to 45 °, for example, may be 40 ° or 30 °, and the angle of the included angle may be adjusted appropriately according to the process capability. Further, when the included angle is smaller, the tensile stress of the polarizer 100 on the inorganic film layer thereunder is smaller, so that the probability of breaking the inorganic film layer at the position of the inclined plane 10040 can be further reduced.

In one embodiment, referring to fig. 1 and fig. 4 together, fig. 4 is a schematic top view of an embodiment of the display panel shown in fig. 1. The display panel 10 further includes a first functional layer 102 located on a side of the polarizer 100 close to the light-emitting surface. In this embodiment, the first functional layer 102 may be a stacked structure including an array substrate, a light emitting layer, and an encapsulation layer, the encapsulation layer may be in contact with the polarizer 100, and the size of the array substrate is larger than the light emitting layer, the encapsulation layer, and the polarizer 100 thereon. Of course, in other embodiments, the first functional layer 102 may have other structures, for example, the first functional layer 102 may be a stacked structure including an array substrate, a light emitting layer, an encapsulation layer, and a touch layer, the touch layer may be in contact with the polarizer 100, and the size of the array substrate is larger than that of the light emitting layer, the encapsulation layer, the touch layer, and the polarizer 100 thereon.

In general, as shown in fig. 1, the display panel 10 includes a display area AA and a non-display area CC, and an orthogonal projection of at least a portion of a side 1004 of the polarizer 100 on the light-emitting surface is a plane. The influence of at least part of the side 1004 on the display effect can be reduced by this design.

For example, as shown in fig. 4, the first functional layer 102 includes four side regions located in the non-display region CC, the four side regions being an IC side, an IC opposite side, and two GOA sides (Gate Driver on Array), respectively; wherein, IC side and IC contralateral phase are relative to be set up, and two GOA sides are relative to be set up. The data signal line, the power signal line, and the like in the first functional layer 102 may be located on the IC side; the display panel 10 may further include an IC chip (not shown) disposed on the IC side. Because a spacing region formed only by an inorganic film layer exists between the data signal line on the IC side and the wiring of the power signal line, the spacing region formed by the inorganic film layer is easy to be brittle when being impacted by falling balls, and then the surrounding data signal line is influenced, and the conditions of bright lines and the like are further generated.

In order to solve this problem, the orthographic projection of the side 1004 of the polarizer 100 on the same side as the IC side of the first functional layer 102 on the light-emitting surface is a plane, that is, the orthographic projection of the side of the polarizer 100 close to the IC chip on the light-emitting surface is a plane. For example, the side 1004 of the polarizer 100 on the same side as the IC side of the first functional layer 102 is provided with an inclined plane 10040. In addition, the side of the polarizer 100 on the same side as the IC opposite side and the GOA side may be designed as the inclined surface 10040, or may be designed as a side perpendicular to the first surface 1000 and the second surface 1002, which is not limited in this application. Through the design mode, the tensile stress of the polarizer 100 on the inorganic film layer at the position of the IC side can be reduced, so that the probability of breakage of the inorganic film layer is reduced, and the display effect is improved.

In yet another embodiment, as shown in fig. 5, fig. 5 is a schematic structural diagram of another embodiment of the display panel of the present application. In this embodiment, in a direction away from the first functional layer 102a, the orthographic projection area of each film layer in the polarizer 100a on the surface of the first functional layer 102a gradually increases, so that a space is formed between the polarizer 100a at the position of the inclined plane 10040a and the first functional layer 100 a. The design method can ensure that at least one side edge of the polarizer 100a is not in contact with the first functional layer 102a, and at least one side edge of the polarizer 100a does not generate tensile stress on the first functional layer 102a when the polarizer is impacted by falling balls, so that the probability of breakage of the inorganic film layer in the first functional layer 102a is reduced.

Of course, in other embodiments, the design shown in FIG. 1 may be adopted, that is, the orthographic projection area of each film layer in the polarizer 100 on the surface of the first functional layer 102 is gradually reduced in the direction away from the first functional layer 102. This design may reduce the thickness of at least one side edge of the polarizer 100 to reduce the tensile stress on the first functional layer 102 from the edge of the polarizer 100.

In general, the polarizer 100 of FIG. 1 can be cut from an original polarizer, for example, the bevel 10040 of the polarizer 100 of FIG. 1 can be cut from a laser, which can be CO ₂ A laser, etc. The above-mentioned method for forming the inclined surface 10040 of the polarizer 100 is simple and the process is mature.

Based on this, as shown in fig. 1, the polarizer 100 includes a heat-affected zone 1008 located in the non-display region CC, and an orthographic projection of at least a part of a side surface of the heat-affected zone 1008 on the light-emitting surface is a plane. Here, the heat affected zone 1008 refers to a region that is interconnected with the bulk region 1006 of the polarizer 100, but where at least a portion of the substrate within the bulk region 1006 is not textured or otherwise behaves as a result of heat. Due to the arrangement of the heat affected zone, the thermal stress at the position of the heat affected zone 1008 can be reduced, and when the display panel 10 is impacted by falling balls, the thermal stress of the inorganic film layer superposed on the edge of the display panel 10 is smaller, so that the probability of brittle fracture of the inorganic film layer is reduced.

Fig. 6 is a schematic structural diagram of an embodiment of a laser cutting apparatus. As shown in fig. 6, the process of laser cutting to form the polarizer 100 of fig. 1 may be: A. placing the original polarizer 20 on the cutting platform 22, and fixing the position of the original polarizer 20 by using a positioning mechanism (not shown) to ensure that the position of the original polarizer 20 does not move; B. setting the angle of the laser 24 so that the laser beam P and the cutting platform have a cutting included angle alpha which is more than 0 degrees and less than 90 degrees; C. at least one side of the original polarizer 20 is cut using a laser 24 to form the polarizer 100 of FIG. 1.

The width D of the heat affected zone 1008 in a direction parallel to the first surface of the polarizer 100 is related to the process conditions of laser cutting, and the width of the heat affected zone 1008 can be controlled to be within 100 μm. For example, when the heat-affected zone 1008 with the inclined surface 10040 in fig. 1 has a trapezoidal vertical cross section, the orthographic length d1 of the portion of the heat-affected zone 1008 on the second surface 1002 where the inclined surface 10040 is located is less than or equal to 50 micrometers, and the orthographic length d2 of the remaining portion of the heat-affected zone 1008 on the second surface 1002 is less than or equal to 50 micrometers.

Further, in a direction parallel to the first surface 1000 of the polarizer 100, the heat-affected zone 1008 includes a first region 10080 and a second region 10082 that are connected to each other, and the first region 10080 is adjacent to the display area AA relative to the second region 10082; wherein, the first region 10080 is filled with thermal barrier particles. In this embodiment, the boundary line between the specific first area 10080 and the specific second area 10082 can be set according to the actual process requirement. For example, the lengths can be directly distinguished by the projected lengths, and the forward projected lengths of the first areas 10080 on the second surface 1002 are equal to or less than the forward projected lengths of the second areas 10082 on the second surface 1002. For another example, the heat-affected zone 1008 corresponding to the position of the inclined plane 10040 may be defined as a second region 10082 by dividing the region according to the position of the inclined plane 10040, and the heat-affected zones 1008 at other positions may be defined as a first region 10080. In addition, the thermal barrier particles filled in the first region 10080 may be inorganic nanoparticles with a small thermal conductivity, such as titanium dioxide and silicon dioxide, and the shape of the inorganic nanoparticles may be spherical or plate-like. Have certain clearance between the above-mentioned thermal barrier granule, thermal stress's transmission when can blocking laser cutting, and because its coefficient of thermal conductivity is lower, heat-conduction is difficult, heat radiation when can blocking laser cutting to can reduce the width in heat affected zone to a certain extent.

Preferably, in the present embodiment, as shown in fig. 7, fig. 7 is a schematic structural diagram of another embodiment of the display panel of the present application. The first area 10080c may be provided therein with a receiving groove 40, and the thermal barrier particles may be stacked and filled in the receiving groove 40.

Of course, in other embodiments, the heat blocking particles may also be disposed outside the heat-affected zone 1008d, for example, as shown in fig. 8, fig. 8 is a schematic structural diagram of another embodiment of the display panel of the present application. A blocking wall 42 containing heat blocking particles may be disposed between the body region 1006d and the heat-affected zone 1008d of the polarizer 100 d.

In addition, referring to fig. 1 again, the second region 10082 can be filled with heat conductive particles, which can be graphene, carbon nanotubes, silver, copper, etc., and can be shaped as spheres, rods, etc. Through the setting of this heat conduction granule, heat when can be with laser cutting is conducted out fast to reduce the width of heat affected zone 1008 to a certain extent, and then reduce the scope that thermal stress exists, in order to reduce the influence of thermal stress to the inorganic rete of its below. Preferably, the heat conductive particles may be one-way heat conductive materials, and the heat conductive direction is to transfer heat from the inside to the outside of the polarizer 100.

Further, as shown in fig. 9, fig. 9 is a schematic structural diagram of another embodiment of the display panel of the present application. The heat conducting particles in the second region 10082e may be arranged in a certain direction to form a plurality of heat conducting channels 44, one end of each heat conducting channel 44 is communicated with the inclined surface 10040e, and the other end thereof is communicated with the surface of the polarizer 100e on the side close to the first functional layer 102 e. The shape of the heat conducting channel 44 may be linear, broken, curved, etc.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a display device according to the present application. The display device 30 includes the display panel 32 of any of the embodiments described above. Of course, in other embodiments, the display device 30 may further include a cover plate 34, and the cover plate 34 may be located on one side of the polarizer 36.

Further, the first functional layer 38 and the cover plate 34 in the display panel 32 are respectively located at two sides of the polarizer 36 in the thickness direction, and a gap is formed between the inclined plane 360 and the first functional layer 38 and the cover plate 34 around the inclined plane; the display device 30 further comprises an optical glue 31, which optical glue 31 may fill the gaps. With the above design, the structural stability of the display device 30 can be made stronger.

The above description is only an example of the present application, and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes performed by the present application and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A display panel, comprising:

the polaroid comprises a first surface and a second surface which are oppositely arranged in the thickness direction of the polaroid and a side surface which is connected with the first surface and the second surface; the display panel comprises a display area and a non-display area, and the projection of at least part of the side surface of the polaroid positioned in the non-display area on the light-emitting surface is a plane; the non-display area includes an IC side, and only an inorganic film layer is present between wiring of a data signal line and a power signal line of the IC side;

the at least part of the side surface comprises a bevel; the inclined surface forms an included angle with one of the first surface and the second surface of less than or equal to 40 °.

2. The display panel of claim 1, wherein the at least some sides further comprise a plane perpendicular to the first surface.

3. The display panel according to claim 1,

the part of the polaroid, which is positioned in the non-display area, comprises a first area and a second area which are mutually connected, and the first area is close to the display area relative to the second area;

wherein the first region is filled with thermal barrier particles.

4. The display panel according to claim 3,

and the second region is filled with heat conducting particles.

5. The display panel according to claim 1,

at least one side surface of the polaroid is an inclined plane;

the surface of the inclined plane faces the light emitting side direction.

6. The display panel according to claim 1, wherein the non-display area of the display panel is further provided with an IC chip, and an orthographic projection of a side of the polarizer close to the IC chip on the light emitting surface is a plane.

7. A display device characterized by comprising the display panel according to any one of claims 1 to 6 and the display panel according to claim 1.