CN217156996U

CN217156996U - Display panel and display device

Info

Publication number: CN217156996U
Application number: CN202123143863.9U
Authority: CN
Inventors: 张振宇; 张新霞
Original assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Hefei Xinsheng Optoelectronics Technology Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-08-09
Anticipated expiration: 2031-12-14

Abstract

An embodiment of the utility model provides a display panel and display device. The display panel includes: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer positioned between the first substrate and the second substrate, wherein a plurality of signal lines are arranged on the first substrate; the first substrate comprises a body part and a bent part positioned on one side of the body part, the body part is arranged opposite to the liquid crystal layer, a plurality of bonding pads are arranged on the bent part, each bonding pad is connected with one signal wire, and different bonding pads are connected with different signal wires; at least one part of the bending part is bent to one side of the body part, which is far away from the liquid crystal layer.

Description

Display panel and display device

Technical Field

The utility model relates to a show technical field, concretely relates to display panel and display device.

Background

As liquid crystal display devices become popular, users have increasingly demanded not only the types of functions and performances of the display devices but also the external appearances of the display devices, and conditions such as thinning and narrowing of the display devices have increasingly become factors for selecting the display devices.

Disclosure of Invention

An embodiment of the utility model provides a display panel and display device.

In a first aspect, the present invention provides a display panel, including: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer positioned between the first substrate and the second substrate, wherein a plurality of signal lines are arranged on the first substrate;

the first substrate comprises a body part and a bent part positioned on one side of the body part, the body part is arranged opposite to the liquid crystal layer, a plurality of bonding pads are arranged on the bent part, each bonding pad is connected with one signal wire, and different bonding pads are connected with different signal wires;

at least one part of the bending part is bent to one side of the body part, which is far away from the liquid crystal layer.

In some embodiments, the body portion includes a first body and a second body, the second body is located on a side of the first body away from the liquid crystal layer, and the hardness of the second body is greater than that of the first body;

the first body and the bending part are of an integral structure.

In some embodiments, the body portion and the bending portion are an integral structure.

In some embodiments, the display panel further comprises a frame sealing adhesive,

the frame sealing glue is positioned between the body part and the second substrate and surrounds the liquid crystal layer.

In some embodiments, the bend is made of a flexible material.

In a second aspect, the present invention provides a display device, including the above-mentioned display panel and backlight module, the body portion of the first substrate and the second substrate are both located on the light emitting side of the backlight module, and the body portion of the first substrate is located between the second substrate and the backlight module;

at least one part of the bending part is bent to one side of the backlight module, which is far away from the liquid crystal layer.

In some embodiments, the display device further includes a connector, and the connector fixedly connects the display panel and the backlight module.

In some embodiments, the connector includes a light shielding tape, and the light shielding tape bonds the edge of the display panel with the backlight module.

In some embodiments, the display panel is divided into a display area and a bezel area surrounding the display area,

at least one part of the shading adhesive tape is positioned on one side of the display panel far away from the backlight module, and the orthographic projection on the display panel is positioned in the frame area.

In some embodiments, the display device further includes a driving part electrically connected to the pad for supplying a driving signal to the pad.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a display panel provided in an example;

fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are some, not all embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used in the embodiments of the present invention should have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Fig. 1 is a schematic structural diagram of a display panel according to an example, and as shown in fig. 1, the display panel includes a first substrate 1, a second substrate 2, a liquid crystal layer 3, and a frame sealing adhesive 4. The display panel comprises a display area and a non-display area surrounding the display area, the non-display area comprises a binding area located on one side of the display area, the display area is an area surrounded by the frame sealing glue, the display area comprises a plurality of grid lines and data lines, and the grid lines and the data lines are crossed to limit a plurality of pixels. The first substrate 1 is provided with a thin film transistor, a pixel electrode and other structures corresponding to each pixel, the second substrate 2 is provided with a common electrode corresponding to the display region, and when an electric field is formed between the pixel electrode and the common electrode, the electric field can drive liquid crystals in the pixels to deflect, so that the pixels display corresponding gray scales, and display is realized. A plurality of bonding pads are arranged on the first substrate corresponding to the binding regions, each bonding pad can be connected with one data line, and different bonding pads are connected with different data lines. A driving module (e.g., a driving IC or a driving circuit board) is electrically connected to the pad, thereby supplying a data signal to the data line through the pad. When the thin film transistor connected with the data line is turned on, the data signal on the data line is transmitted to the corresponding pixel electrode through the thin film transistor, so that the pixel is driven to display.

Since the bonding pad needs to be disposed in the bonding region, the width of the bonding region is always wide, i.e., the region a in fig. 1 is wide. However, since the design concept of four sides having the same width is adopted in the product design of the display device at present, when one side of the non-display area of the display panel is wider, in order to realize the four sides having the same width, the width of the other three sides is enlarged to adapt to the whole non-display area, and further, the frame of the display panel is too large, which is not beneficial to narrowing the frame of the display device.

In order to solve the above problem, an embodiment of the present invention provides a display panel, and fig. 2 is the embodiment of the present invention provides a structural schematic diagram of a display panel. As shown in fig. 2, the display panel includes a first substrate 1, a second substrate 2, and a liquid crystal layer 3. The liquid crystal layer 3 is disposed between the first substrate 1 and the second substrate 2, and a plurality of signal lines (not shown) are disposed on the first substrate 1.

The first substrate 1 includes a main body 11 and a bending portion 12 located at one side of the main body, the main body 11 is disposed opposite to the liquid crystal layer 3, the bending portion 12 is disposed with a plurality of pads (not shown in the figure), each pad is connected to a signal line, and different pads are connected to different signal lines; at least a part of the bending part 12 is bent to a side of the body part 11 departing from the liquid crystal layer 3. The signal line may refer to a data line, and the pad may refer to a pad for supplying a data signal to the data line. In addition, as described above, a plurality of gate lines may be disposed on the first substrate 1, and the plurality of gate lines and the plurality of data lines may cross to define a plurality of pixels.

The embodiment of the utility model provides an among the display panel, the pad sets up on the kink 12 of first base plate 1, and at least a part of kink 12 is buckled to one side that this somatic part 11 deviates from liquid crystal layer 3, can reduce its area occupied like this to reduce display panel's frame width, and then realize display panel's narrow limit.

In some embodiments, the bend 12 is made of a flexible material to facilitate bending of the bend 12. The flexible material is for example Polyimide (PI).

In some embodiments, as shown in fig. 2, the body portion 11 includes the first body 111, and the first body 111 and the bending portion 12 are an integral structure, that is, the first body 111 is also made of a flexible material, so as to facilitate a manufacturing process of the display panel. In order to enable the body part 11 to stably support the liquid crystal layer 3 in consideration of the fluidity of the liquid crystal layer 3, as shown in fig. 2, the body part 11 further includes a second body 112, the second body 112 is located on the side of the first body 111 away from the liquid crystal layer 3, and the hardness of the second body 112 is greater than that of the first body 111. In some embodiments, the second body 112 provided by the present invention may include a glass substrate, and the material of the bent portion 12 and the first body 111 may include polyimide, which is convenient for forming a pad or other conductive structure because the light transmittance of the polyimide material is high and high temperature and corrosion resistant. Of course, the first body 111, the second body 112, and the bent portion 12 may be made of other materials, which is not intended by the present invention.

When manufacturing the first substrate 1 in the display panel shown in fig. 2, a film layer with lower hardness may be formed on a bearing plate with higher hardness, where the film layer is the second body 112 and the bending portion 12 that are connected as a whole; then, cutting the part of the bearing plate corresponding to the bending part 12, and peeling off the part from the bending part 12, wherein the rest part of the bearing plate is the first body 111; finally, the bending portion 12 is bent to a side of the first body 111 far away from the second body 112, so as to obtain the first substrate 1 in the display panel shown in fig. 2.

In some embodiments, the second substrate 2 is a color filter substrate, which may include: the color filter comprises a substrate base plate, a color film layer and a black matrix, wherein the color film layer and the black matrix are arranged on the substrate base plate. The color film layer may include a plurality of color filters, and each pixel corresponds to one color filter, thereby implementing a color display.

In some embodiments, as shown in fig. 2, the display panel further includes a frame sealing adhesive 4, and the frame sealing adhesive 4 is located between the body portion 11 and the second substrate 2 and surrounds the liquid crystal layer 3. The frame sealing glue 4 can bond the first substrate 1 and the second substrate 2 to prevent the liquid crystal layer 3 from overflowing, and ensure the display performance of the display panel.

In addition, the display panel may further include: a first polarizer and a second polarizer (not shown), in one example, the first polarizer is disposed on the side of the body portion 11 away from the second substrate 2, and the second polarizer is disposed on the side of the second substrate 2 away from the body portion 11. The polarization directions of the first polarizer and the second polarizer may be crossed, e.g., perpendicular.

Fig. 3 is a schematic structural diagram of another display panel according to an embodiment of the present invention. The display panel shown in fig. 3 is similar to that shown in fig. 2, except that the first substrate 1 is different, and only the difference between fig. 3 and fig. 2 will be described below.

As shown in fig. 3, the main body 11 and the bent portion 12 are of an integral structure, that is, the main body 11 and the bent portion 12 are made of flexible materials.

Since the liquid crystal has fluidity, when the body portion 11 and the bent portion 12 of the first substrate 1 are integrated in the display panel, the liquid crystal layer 3 needs to be supported by a substrate with high hardness. In addition, in the display panel, a backlight module is needed to provide a light source during the display process, so the first substrate 11 can be disposed on the backlight module 6.

Specifically, in the manufacturing process of the display panel shown in fig. 3, an unbent first substrate is first disposed on a third substrate (not shown) with a relatively high hardness, and the third substrate is bonded to the unbent first substrate. Then, a plurality of signal lines, pads respectively connected to the plurality of signal lines, and other structures for display are formed on the first substrate 1. Then, the third substrate is separated from the unbent first substrate 1, and the portion (i.e. the main body portion) of the unbent first substrate 1 not provided with the bonding pad is fixed on the backlight module 6, and the portion of the first substrate 1 provided with the bonding pad is bent to the side of the backlight module 6 away from the main body portion 11. The third substrate and the first substrate 1 which is not bent can be bonded through the adhesive, and the adhesive has the following properties: it has viscosity when not exposed to UV light, and loses viscosity and decomposes when exposed to UV light. In this case, when the third substrate is separated from the unbent first substrate 1, the third substrate may be separated from the unbent first substrate 1 by UV light irradiation.

Fig. 4 is a schematic structural diagram of a display device according to an embodiment of the present invention, and fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention.

As shown in fig. 4 and 5, the display device includes the display panel and the backlight module 6, the main body 11 of the first substrate 1 and the second substrate 2 are both located on the light emitting side of the backlight module 6, the main body 11 of the first substrate 1 is located between the second substrate 2 and the backlight module 6, and the first polarizer may be disposed between the main body 11 of the first substrate 1 and the backlight module 6. The backlight module 6 is used for providing light to the display panel.

In some embodiments, as shown in fig. 4, the display panel is the display panel shown in fig. 2, and at least a portion of the bending portion 12 is bent to a side of the backlight module 6 away from the liquid crystal layer 3.

In other embodiments, as shown in fig. 5, the display panel shown in fig. 3 is adopted as the display panel, and at least a portion of the bending portion 12 is bent to a side of the backlight module 6 away from the liquid crystal layer 3.

When the display panel adopts the display panel shown in fig. 3, the backlight module 6 can provide light to the display panel, and can also play a supporting role for the liquid crystal layer 3 in the display panel to ensure the structural stability of the display device.

In some embodiments, the display device shown in fig. 4 and 5 may further include a connector 7, which fixedly connects the display panel and the backlight module 6.

In some embodiments, the connector 7 includes a light shielding tape 71, and the light shielding tape 71 bonds the edge of the display panel with the backlight module 6. The light shielding tape 71 can bond the backlight module 6 and the display panel, and can prevent light leakage from the edge of the display panel. The periphery of the display panel can be bonded with the light-shielding adhesive tape 71 to prevent light leakage at each position of the edge of the display panel.

In some embodiments, the display panel is divided into a display area and a frame area surrounding the display area, and the display area is an area surrounded by the frame sealing glue 4. At least a part of the light-shielding tape 71 is located on a side of the display panel away from the backlight module, and an orthographic projection on the display panel is located in the frame area.

Specifically, as shown in fig. 4 or fig. 5, the light shielding tape 71 includes a first portion 711, a second portion 722, and a third portion 713 connecting the first portion and the second portion, wherein the first portion 711 is located on a side of the second substrate 2 away from the backlight module 6, and the orthographic projection on the display panel is located in the frame region, so as to prevent the light shielding tape 71 from affecting the display of the display panel. The second portion 712 is located on a side of the backlight module 6 away from the second substrate 2.

In some embodiments, as shown in fig. 4 or fig. 5, the display device further includes a driving part 8, and the driving part 8 is electrically connected to the pads for supplying driving signals to the pads, so as to supply the driving signals to the signal lines on the first substrate 1 through the pads. The driving portion 8 may include a driving circuit board electrically connected to the pad through a flexible printed circuit board.

Compared with fig. 4, the first substrate 1 in the display device shown in fig. 5 has an integrated structure, thereby making the structure of the display device simpler.

The embodiment of the utility model provides an in the display device that provides can be: any product or component with a display function, such as electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like, is not limited by the present invention.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. A display panel, comprising: the liquid crystal display panel comprises a first substrate, a second substrate and a liquid crystal layer positioned between the first substrate and the second substrate, wherein a plurality of signal lines are arranged on the first substrate;

at least one part of the bending part is bent to one side of the main body part, which is far away from the liquid crystal layer.

2. The display panel according to claim 1,

the body part comprises a first body and a second body, the second body is positioned on one side of the first body, which is far away from the liquid crystal layer, and the hardness of the second body is greater than that of the first body;

the first body and the bending part are of an integral structure.

3. The display panel according to claim 1, wherein the main body and the bending portion are an integral structure.

4. The display panel according to any one of claims 1 to 3, wherein the display panel further comprises a frame sealing adhesive,

5. The display panel according to any one of claims 1 to 3, wherein the bending portion is made of a flexible material.

6. A display device, comprising the display panel and the backlight module as claimed in any one of claims 1 to 5, wherein the body portion of the first substrate and the second substrate are both located on the light emitting side of the backlight module, and the body portion of the first substrate is located between the second substrate and the backlight module;

7. The display device according to claim 6, further comprising a connector, wherein the connector fixedly connects the display panel with the backlight module.

8. The display device according to claim 7, wherein the connector comprises a light shielding tape, and the light shielding tape bonds an edge of the display panel with the backlight module.

9. The display device according to claim 8, wherein the display panel is divided into a display area and a bezel area surrounding the display area,

10. A display device as claimed in claim 6, further comprising a driver section electrically connected to the pads for providing driving signals to the pads.