CN213694255U

CN213694255U - Support film of display panel, display panel and display device

Info

Publication number: CN213694255U
Application number: CN202022826287.7U
Authority: CN
Inventors: 王伟婷
Original assignee: Yungu Guan Technology Co Ltd
Current assignee: Yungu Guan Technology Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-13
Anticipated expiration: 2030-11-30

Abstract

The utility model provides a display panel's support membrane, display panel and display device, should support the membrane and include: the supporting film comprises a supporting film body, wherein a conductive layer is arranged in the supporting film body; the conductive part is connected with the conductive layer and at least part of the conductive part is exposed out of the support film body, so that the accumulation of static electricity in the display panel can be effectively reduced, the influence of the static electricity on the electrical performance of the transistor on the array substrate in the display panel is avoided, and the influence on the display effect of the display panel is avoided.

Description

Support film of display panel, display panel and display device

Technical Field

The utility model relates to a show the field, especially relate to a display panel's support membrane, display panel and display device.

Background

With the popularization of electronic devices, various electronic devices equipped with display screens are becoming common, such as mobile phone screens, displays, electronic billboards, and the like. In order to obtain better visual experience, the requirements of people on the performance, quality and display effect of display screens are higher and higher.

Currently, a commonly used Display Panel includes a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), an Organic Light-emitting diode (OLED) Panel, and the like, and in order to ensure the quality of the Display Panel, an electrostatic injection reliability experiment is performed before the Display Panel leaves a factory, which may easily cause a problem of poor Display of the Display Panel.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, embodiments of the present invention provide a support film, a display panel and a display device of a display panel, which can effectively reduce the influence of static electricity on the display panel.

In a first aspect, an embodiment of the present invention provides a support membrane, the support membrane includes: the supporting film comprises a supporting film body, wherein a conductive layer is arranged in the supporting film body; the conductive part is connected with the conductive layer and at least part of the conductive part is exposed out of the support film body.

According to an aspect of the embodiments of the present invention, the conductive layer is a mesh structure.

According to an aspect of the embodiments of the present invention, the conductive portion includes a plurality of meshes, and the area of the meshes gradually increases in a direction near the center of the support film.

According to an aspect of the embodiments of the present invention, the conductive portion is a portion of the conductive layer extending from the side of the support film body.

According to an aspect of the embodiment of the present invention, the support film body surface has a groove exposing the conductive layer, and the conductive portion is located in the groove.

According to an aspect of the embodiments of the present invention, the conductive layer includes a plurality of sub-conductive layers insulated from each other, each of the sub-conductive layers is connected to one of the conductive portions, respectively.

In a second aspect, the present invention further provides a display panel, including the support film in the first aspect, the display panel includes a screen body, and the support film is located the side is shaded from the screen body.

According to an aspect of the embodiment of the utility model, the screen body still includes flexible printed circuit board includes the earthing terminal, the conductive part is connected the earthing terminal.

According to the utility model discloses an aspect of the embodiment, the conducting layer distance the distance of the screen body is greater than the conducting layer distance the supporting film is kept away from the distance of screen body one side.

In a third aspect, the present invention further provides a display device, including the display panel in the second aspect.

The utility model discloses an at the inside conducting layer that sets up of support membrane body to set up the conductive part of connecting the conducting layer in the support membrane outside, the display panel including this support membrane can collect the static in the display panel through the conducting layer in the support membrane, and derive the static that the conducting layer was collected through the conducting part, can be effectual the accumulation of static in the reduction display panel, thereby avoid static to cause the influence to the electrical property of the transistor on the array substrate among the display panel, thereby avoid influencing display panel's display effect.

Drawings

Other features, objects and advantages of the invention will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.

Fig. 1 shows a schematic top view of a support membrane provided according to an embodiment of the present invention;

FIG. 2 illustrates a cross-sectional view taken along line A- -A of FIG. 1 in accordance with the present invention;

fig. 3 shows a schematic top view of a support membrane provided according to another embodiment of the present invention;

figure 4 shows a cross-sectional view in the direction B-B of figure 3, in accordance with the present invention;

fig. 5 shows a schematic top view of a support membrane provided according to an embodiment of the present invention;

fig. 6 illustrates a display panel provided according to an embodiment of the present invention;

fig. 7 illustrates a display device provided according to an embodiment of the present invention.

Detailed Description

The features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.

The inventor finds that, when the electrostatic injection reliability experiment is performed on the display panel, due to the complicated and various film layer structures of the display panel, part of electrostatic charges can enter the display panel along the edges of the film layers, and the electrical performance of the thin film transistor in the display panel structure is influenced through the back channel effect, so that the circuit performance of a driving circuit, a pixel circuit and the like is influenced, and finally, the display abnormality and other adverse problems are caused.

In order to solve the above problem, embodiments of the present invention provide a support film, and the embodiments will be described below with reference to the accompanying drawings.

Fig. 1 shows a schematic top view of a support membrane provided according to an embodiment of the present invention; fig. 2 shows a cross-sectional view along a-a of fig. 1 according to the present invention.

Fig. 1 shows a schematic structural diagram of a support membrane according to an embodiment of the present invention. As shown in fig. 1, an embodiment of the present invention provides a supporting film 10, where the supporting film 10 includes a supporting film body 13, a conductive layer 11 located in the supporting film body 13, and a conductive portion 12 at least partially exposed outside the supporting film body 13, and the conductive layer 11 and the conductive portion 12 are electrically connected. In the present embodiment, the material of the supporting film body 13 is a polymer insulating material, which has good insulating performance, for example, the supporting film body 13 can be made of polyethylene terephthalate (PET) or Polyimide (PI). The conducting layer 11 is located inside the conducting film body 13, when the supporting film 10 is applied to the display panel, the supporting film 10 can increase the way of leading out static electricity of the display panel while supporting the display panel, so that static accumulation is effectively reduced, the influence on the electrical performance of a transistor in the display panel structure is further avoided, and finally, the display effect of the display panel can be effectively improved.

In some specific embodiments, the conductive layer 11 may be covered by the supporting film body 13, that is, the conductive layer 11 is located inside the supporting film body 13, which can enhance the strength of the supporting film 10 and prevent the supporting film 10 from curling due to peeling between the supporting film body 13 and the conductive layer 11. In other embodiments, the support film 10 is divided into three layers, which are a conductive layer 11 and support film bodies 13 distributed on two sides of the conductive layer 11, and the edge of the conductive layer 11 connected to the conductive portion 12 is exposed on the side surface of the support film 10, so that the conductive layer 11 can collect static electricity accumulated at the edge of the display panel film and lead out the collected static electricity through the conductive portion 12.

Further, when the side surface of the support film 10 exposes the conductive layer 11, the area of the conductive layer 11 exposed on the side surface of the support film 10 is greater than or equal to 1/3 of the area of the side surface of the support film 10, and is less than or equal to 2/3 of the area of the side surface of the support film 10, so that static electricity in the side edge region of the display panel can be better collected by the conductive layer 11 through the side surface of the support film 10, meanwhile, the strength of the side surface of the support film 10 can be enhanced, cracks on the side surface of the support film 10 are reduced, the cracks are prevented from further diffusing into the support film 10, the support effect of the support film 10 is improved, and the capability of preventing water and oxygen from.

In some embodiments, the multiple conductive layers 11 are disposed inside the support film body 13, and the multiple conductive layers 11 may be insulated from each other or electrically connected to each other, so as to improve the electrostatic collecting capability of the support film 10 by disposing the multiple conductive layers 11. In other embodiments, when the conductive layers 11 are insulated from each other, a plurality of conductive portions 12 may be disposed, and each conductive portion 12 is connected to a corresponding one of the conductive layers 11 to guide out the static electricity collected by the conductive layer 11; when the multilayer conductive films 11 are electrically connected to each other, only one conductive portion 12 may be provided to lead out static electricity collected by the conductive layers 11.

Optionally, the conductive layer 11 is made of metal, graphene, carbon nanotubes or conductive polymer, so that the conductive layer 11 has good conductivity to guide out static electricity better, and meanwhile, the conductive layer 11 has high strength to play a better supporting role;

specifically, when the material of the conductive layer 11 is metal, the material of the conductive layer 11 may be at least one of copper, silver, nickel, and aluminum.

Further, as shown in fig. 5 (the conductive layer is represented by a dotted line in fig. 5 because the conductive layer is not visible), the conductive layer 11 is a mesh structure, so that the support film body 13 located at both sides of the conductive layer 11 can form a whole through the mesh of the mesh structure, and cannot be divided into two parts which are not connected with each other by the conductive layer 11, thereby enhancing the strength of the support film 10, avoiding the occurrence of peeling between the support film body 13 and the conductive layer 11 due to the addition of the conductive layer 11, and meanwhile, the conductive layer 11 of the mesh structure does not increase the thickness of the support film 10, thereby being capable of reducing the thickness of the display panel.

Furthermore, the conductive layer 11 of the mesh structure includes a plurality of meshes, in the direction close to the center of the support film, the area of the mesh structure is gradually increased, the edge of the display panel usually receives more stress, which easily causes the problem that the film layer of the display panel warps and peels at the edge, the area of the mesh at the edge area of the conductive layer 11 in the support film 10 is set to be smaller, so that the density of the mesh at the edge area is higher, the contact area between the support film body 13 and the conductive layer 11 is increased, the adhesive force between the support film body 13 and the conductive layer 11 is improved, the strength at the edge area of the support film 10 is also increased, thereby preventing the conductive layer 11 and the support film body 13 from peeling, also preventing the edge area of the support film 10 from being stressed to generate cracks, and the area of the mesh in the conductive layer 11 close to the center of the support film 10 is larger, the weight of the support film can be reduced, thereby reducing the weight of the display panel.

In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the conductive portion 12 is a portion of the conductive layer 11 extending from a side of the support film 10, generally, the support film 10 includes a surface for attaching to the screen body, a back surface opposite to the surface, and a side surface connecting the surface and the back surface, the conductive layer 11 is parallel to the surface and extends to one side surface of the support film 10 to form the conductive portion 12, the conductive portion 12 is used for connecting with a ground terminal in the screen body to lead out static electricity, and the conductive portion 12 and the conductive layer 11 are integrally formed to simplify a manufacturing process of the support film 10.

In another embodiment of the present invention, as shown in fig. 3 and 4, the surface of the supporting film body 13 has a groove, the groove exposes the conductive layer 11, the conductive portion 12 is located in the groove and connected to the conductive layer 11, the conductive portion 12 is also disposed in the supporting film 10, on one hand, the flatness of the supporting film 10 can be improved, and on the other hand, the conductive portion 12 can be prevented from being exposed and broken, so that static electricity cannot be led out.

In another embodiment of the present invention, a plurality of conductive portions 12 are disposed on the supporting film 10, one of the conductive portions 12 is used to connect the grounding terminal in the panel body, and the other conductive portions 12 are used to connect other film layers or other electrostatic protection structures in the panel body, for example, copper foil in the composite tape can be connected to increase the static electricity leading-out path of the panel body.

In the utility model discloses a further embodiment, conducting layer 11 includes a plurality of sub-conducting layers of mutual insulation, a conducting part 12 is connected respectively to each sub-conducting layer, each sub-conducting layer is connected to the earthing terminal of the screen body through corresponding conducting part 12, set up a plurality of sub-conducting layers, can increase the derivation route of static, reduce the influence of static to the screen body, mutual insulation again between each sub-conducting layer, make the static that the sub-conducting layer was collected can not conduct to other sub-conducting layers, avoid the problem of electrostatic crosstalk, display panel's electrostatic protection ability has further been improved.

The embodiment of the utility model provides a display panel is still provided, as shown in fig. 6, display panel is including the support membrane 10 and the screen body that stack gradually the setting, and support membrane 10 is located the side of being shaded of the screen body, and the screen body includes base plate 15, device layer 16 and Flexible Printed Circuit board 17, and the screen body is connected to Flexible Printed Circuit board 17 one end, and the other end is connected to and supports membrane 10 and keeps away from a screen body side surface is provided with earthing terminal (not shown) on Flexible Printed Circuit board (FCP) 17, and the earthing terminal of conductive part 12 in Flexible Printed Circuit board 17 on the support membrane 10 is connected. It should be noted that the flexible printed circuit board 17 is made of a flexible insulating base material, and can be freely bent, wound, and folded, and is arbitrarily arranged according to the space layout requirement, so as to achieve integration of component assembly and wire connection.

Specifically, when the conductive portion 12 in the support film 10 is the structure in fig. 1 and 2, the conductive portion 12 is connected to the ground terminal in the flexible printed circuit board 17 by bending; when the conductive part 12 in the support film 10 has the structure shown in fig. 3 and 4, the flexible printed circuit board 17 is folded and the ground terminal is directly electrically connected to the conductive part 12, as shown in fig. 6.

Further, the display panel further includes a composite tape 14, a through hole is disposed at a position of the composite tape 14 corresponding to the conductive portion 12, and the through hole is filled with a conductive material 18, so that a ground terminal on the flexible printed circuit board 17 can be connected to the conductive portion 12 through the conductive material 18.

In the utility model discloses a further embodiment, the distance between the conducting layer 11 in the supporting film 10 and the screen body is greater than conducting layer 11 and supporting film 10 and keeps away from the distance between the screen body one side, through set up conducting layer 11 in the one side that the screen body was kept away from to supporting film 10 for the static that conducting layer 11 was collected is difficult to conduct to the screen body, has further reduced the influence of static to the screen body.

Specifically, the distance between the conductive layer 11 in the support film 10 and the surface of the support film 10 on the side close to the screen is greater than 2/3 of the thickness of the support film 10 and less than 4/5 of the thickness of the support film 10, so that static electricity is prevented from being conducted to the screen, and the phenomenon that the surface of the support film 10 is stressed to generate cracks due to the fact that the conductive layer 11 is too close to the surface of the support film 10 can be avoided.

Based on the same concept, the embodiment of the present invention further provides a display device, as shown in fig. 7, which may include: the embodiment of the utility model provides an above-mentioned display panel.

Specifically, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should be taken as limitations of the present invention.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

In accordance with the embodiments of the present invention as set forth above, these embodiments do not set forth all of the details nor limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A support film for a display panel, the support film comprising:

the supporting film comprises a supporting film body, wherein a conductive layer is arranged in the supporting film body;

the conductive part is connected with the conductive layer and at least part of the conductive part is exposed out of the support film body.

2. The support film of claim 1, wherein the conductive layer is a mesh structure.

3. The support membrane of claim 2, wherein the conductive layer comprises a plurality of mesh openings, the mesh openings increasing in area in a direction toward the center of the support membrane.

4. The support film of claim 1, wherein the conductive portion is a portion of the conductive layer extending from a side edge of the support film body.

5. The support film of claim 1, wherein the surface of the support film body is provided with a groove for exposing the conductive layer, and the conductive part is positioned in the groove.

6. The support film of any one of claims 1-5, wherein the conductive layer comprises a plurality of sub-conductive layers insulated from each other, and each sub-conductive layer is connected to one of the conductive portions.

7. A display panel comprising a panel and the support film of any one of claims 1-6, the support film being on a backlight side of the panel.

8. The display panel of claim 7, wherein the screen body further comprises a flexible printed circuit board, the flexible printed circuit board comprising a ground terminal, the conductive portion being connected to the ground terminal.

9. The display panel according to claim 7, wherein the distance from the conductive layer to the panel body is greater than the distance from the support film to a side of the support film away from the panel body.

10. A display device characterized by comprising the display panel according to any one of claims 7 to 9.