CN109036132B

CN109036132B - Display panel and display mother board

Info

Publication number: CN109036132B
Application number: CN201810818996.5A
Authority: CN
Inventors: 王燕锋; 崔永鑫; 刘成; 黄华
Original assignee: Guangzhou Guoxian Technology Co Ltd
Current assignee: Guangzhou Guoxian Technology Co Ltd
Priority date: 2018-07-24
Filing date: 2018-07-24
Publication date: 2021-03-26
Anticipated expiration: 2038-07-24
Also published as: CN109036132A

Abstract

The invention relates to the technical field of displays, in particular to a display panel and a display mother board. The invention provides a display panel. The display panel comprises a substrate and a buffer layer group. The buffer layer group is contacted with the back surface of the substrate. The buffer layer group is integrated with the substrate. Because the buffer layer group is arranged on the back surface of the substrate, when the display panel is impacted from the light-emitting side, the impact force borne by the display panel is transmitted to the buffer layer group through the substrate, so that the impact force is absorbed by the buffer layer group, the damage of the impact force to pixels and/or anodes and/or cathodes or other devices is relieved or even avoided, and the display panel can normally emit light.

Description

Display panel and display mother board

Technical Field

The invention relates to the technical field of displays, in particular to a display panel and a display mother board.

Background

With the development of information technology, display terminals such as mobile phones, tablet computers, notebook computers and the like have become indispensable tools in people's lives. The display panel is an important component of the display terminal, and gradually develops in the directions of flexibility, bendability and the like, so that the flexible screen becomes the future development direction of the display panel.

Disclosure of Invention

Based on this, provide an improved display panel and display motherboard.

A display panel, comprising:

a substrate; and

a buffer layer group in contact with a back surface of the substrate, the buffer layer group being integral with the substrate.

Because the buffer layer group is arranged on the back surface of the substrate, when the display panel is impacted from the light-emitting side, the impact force borne by the display panel is transmitted to the buffer layer group through the substrate, so that the impact force is absorbed by the buffer layer group, the damage of the impact force to pixels and/or anodes and/or cathodes or other devices is relieved or even avoided, and the display panel can normally emit light.

In one embodiment, the buffer layer group includes a first buffer layer including a plurality of buffer members arranged at intervals in an extending direction of the substrate.

In one embodiment, any one of the cushioning components has a first end and a second end opposite the first end, the first end having an area greater than an area of the second end,

wherein the first end forms a first buffer member toward a buffer member of the substrate,

the second end forms a second cushioning component toward the cushioning component of the substrate.

In one embodiment, any two second cushioning components are not adjacent.

In one embodiment, two or more first buffer parts are arranged between any two second buffer parts; or the like, or, alternatively,

the first buffer member and the second buffer member are alternately arranged.

In one embodiment, in the arrangement direction of the buffer parts, the distance between two adjacent buffer parts is 40-60% of the width of the buffer parts.

In one embodiment, the first cushioning layer further comprises a third cushioning component disposed between adjacent ones of the cushioning components;

preferably, the hardness of the material used for the third cushioning component is less than the hardness of the material used for the first cushioning component and the second cushioning component.

In one embodiment, the buffer layer group further includes a second buffer layer bonded to a back-facing surface of the substrate, and a third buffer layer covering the first buffer layer, wherein the first buffer layer is between the second buffer layer and the third buffer layer.

In one embodiment, the hardness of the material used for the buffer component is greater than that of the material used for the second buffer layer and greater than that of the material used for the third buffer layer.

A display mother board comprises the display panel of any one of the above technical schemes.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment.

Fig. 2 is a schematic structural diagram of the display panel in fig. 1 when a first supporting member is disposed thereon.

Fig. 3 is a schematic top view illustrating a positional relationship among the buffer member, the first support member, and the second support member of the display panel in fig. 1.

Fig. 4 is a schematic perspective view of a buffer member of the display panel in fig. 1.

Fig. 5 is a schematic structural diagram of a first buffer layer, a second buffer layer, and a third buffer layer of a display panel according to another embodiment.

Fig. 6 is a schematic plan view illustrating a positional relationship among the buffer member, the first support member, and the second support member in fig. 5.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, an embodiment of the invention provides a display panel 100. The display panel 100 is for mounting on a display terminal. The display terminal can be a mobile phone, a tablet computer, a notebook computer and the like.

The display panel 100 includes a substrate 110 and a buffer layer group 101. The display panel 100 may include an encapsulation layer 120, a light emitting functional layer 130 between a front surface of the substrate 110 and the encapsulation layer 120. The buffer layer group 101 is in contact with the back surface of the substrate 110. The buffer layer group 101 is formed integrally with the substrate 110.

The back surface of the substrate 110 refers to a surface of the substrate 110 opposite to the light emitting function layer 130. The buffer layer group 101 may be adhered to the back surface of the substrate 110 by a glue layer, or may be formed on the back surface of the substrate 110 by a process of sputtering and then etching. Since the buffer layer group 101 is disposed on the opposite surface of the substrate 110, the light emission of the light emitting function layer 130 is not affected, and thus the display panel 100 can achieve a good light emitting effect.

Due to the buffer layer group 101 disposed on the opposite surface of the substrate 110, when the display panel 100 is impacted from the light emitting side (see fig. 1), the impact force F applied to the display panel 100 is dispersed by the buffer layer group 101, so as to reduce or even avoid the damage of the impact force to the pixels and/or the anodes and/or the cathodes, or other devices, and enable the display panel 100 to emit light normally. For example, in a ball drop test of the flexible panel, the inventors found that when the display panel 100 is hit by a ball drop from the light emitting side after the buffer layer group 101 is provided on the reverse surface of the substrate 110 of the display panel 100, the display abnormality problems such as black spots, bright spots, and color spots are improved.

Further, referring to fig. 1 in conjunction with fig. 2 to 3, the buffer layer group 101 includes a first buffer layer 140, and the first buffer layer 140 includes a plurality of buffer members 141 arranged at intervals along the extending direction of the substrate 110. When the substrate 110 is subjected to an impact force, the impact force is rapidly dispersed by the buffer members 141, rather than being concentrated on a small area of the display panel 100, so that pixels and/or anodes and/or cathodes of the display panel 100, or other devices, are not easily damaged. Specifically, referring to fig. 1, 2 and 4, each cushioning member 141 has a first end 1411 and a second end 1412 opposite the first end 1411. The first end 1411 has an area greater than that of the second end 1412. The buffer member 141 may be classified into two types, i.e., a first buffer member 141a and a second buffer member 141b, according to the arrangement of the buffer members. The first end 1411 of the first buffer member 141 faces the substrate 110, and the second end 1412 of the second buffer member 141b faces the substrate 110. Thus, when the display panel 100 receives an impact from the light emitting side, most of the impact force received by the substrate 110 is received by the first end 1411 of the first buffer member 141a and is rapidly dispersed by the first buffer member 141 a. The second cushioning component 141b is oriented toward the base plate 110 at the second end 1412, which is a steady state arrangement. The second buffer member 141b can still stably exist and stably support the substrate 110 when the display panel 100 receives an impact from a light emitting side. It can be seen that, under the combined action of the first buffer member 141a and the second buffer member 141b, not only the impact force applied to the display panel 100 can be rapidly dispersed, but also the substrate 110 can be stably supported, so that the damage to the pixels and/or the anode and/or the cathode of the display panel 100, or other devices, can be reduced or avoided, and the display panel 100 can emit light normally.

Referring to fig. 4, in one embodiment, cushioning component 141 has a first surface, a second surface 1413, a third surface 1414, a fourth surface 1415, and a fifth surface 1416. The first surface forms a first end 1411 of cushioning component 141. The second surface 1413, the third surface 1414, the fourth surface 1415, and the fifth surface 1416 are sequentially connected end to end such that the intersection of the second surface 1413, the third surface 1414, the fourth surface 1415, and the fifth surface 1416 meets at a vertex that forms the second end 1412 such that the area of the second end 1412 is approximately 0. The cushioning member 141 is a rectangular pyramid in overall view, and has a triangular longitudinal section. In other embodiments, the shape of the cushioning member 141 may also be triangular pyramid, truncated pyramid, prism, or other irregular shapes. The cushion member 141 may have a trapezoidal shape in longitudinal section.

Referring to fig. 1, in one embodiment, any two second buffer parts 141b are not adjacent, i.e., at least one first buffer part 141a is disposed between any two second buffer parts 141 b. For example, referring to fig. 5 and 6, there may be at least two or three first buffer members 141a between two second buffer members 141b, i.e., the number of first buffer members 141a is greater than the number of second buffer members 141 b. The inventors found that, in this way, when the display panel 100 is impacted by the impact force F as shown in fig. 1, the impact force F is dispersed by the first buffer member 141a more quickly, and the supporting ability of the second buffer member 141b is not weakened, so that the pixels and/or the anode and/or the cathode of the display panel 100 are further protected from being damaged, and the display panel 100 can normally emit light.

Further, referring to fig. 1, in conjunction with fig. 2 and 3, a distance L1 between adjacent cushioning members 141 in the arrangement direction of the cushioning members 141 is 40% to 60% of a width L2 of the cushioning members 141.

As shown in fig. 3, in the present embodiment, the arrangement direction of the plurality of buffer members 141 includes a lateral arrangement direction and a vertical arrangement direction. The width of the cushioning members 141 in the lateral arrangement direction of the cushioning members 141 is L2. The distance between the adjacent cushioning members 141 in the lateral arrangement direction of the cushioning members 141 is L1, and as shown in fig. 1, the distance L1 between two adjacent cushioning members 141 means the shortest distance between the two cushioning members 141. The distance L1 between the adjacent buffer members 141 is set so that the adjacent buffer members 141 can maintain a certain distance, so that when the substrate 110 receives an impact force, the impact force is quickly dispersed by the first buffer member 141a, and the buffer members 141 are not too dispersed, so that the buffer members 141 can buffer the display panel 100 well.

In one embodiment, referring to fig. 1 and 2, the buffer layer group 101 further includes a second buffer layer 150 bonded to the back surface of the substrate 110 and a third buffer layer 160 covering the first buffer layer 140. The first buffer layer 140 is positioned between the second buffer layer 150 and the third buffer layer 160.

When the display panel 100 receives an impact from the light emitting side, the impact on the display panel 100 is first transmitted to the second buffer layer 150 through the substrate 110, then transmitted to the first buffer layer 140, and finally transmitted to the third buffer layer 160. Thus, under the dispersing action of the second buffer layer 150, the third buffer layer 160 and the first buffer layer 140 on the impact force F, stress concentration on devices inside the display panel 100 is small, so that the devices inside the display panel 100 are not easily damaged, and the display panel 100 is not easily subjected to display failure.

Referring to fig. 2 and 3, in one embodiment, first buffer layer 140 further includes a third buffer member 170 disposed between adjacent buffer members 141.

Preferably, the hardness of the material used for the third buffer member 170 is less than the hardness of the materials used for the first and

second buffer members

141a and 141b, so that when the display panel 100 receives an impact from the light emitting side, the first buffer member 141a easily transmits and releases stress to the non-light emitting side, the second buffer member 141b can perform a good supporting function, and the third buffer member 170 can perform further supporting and buffering functions.

The material of the third buffer layer 170 may be the same as the material of the second buffer layer 150 and the third buffer layer 160, such as PI material, rubber, etc., which is beneficial for the third buffer layer 170 to have a good buffering effect. Of course, the third buffer layer 170 may be made of different materials from those of the second buffer layer 150 and the third buffer layer 160.

In a preferred embodiment, the third buffer member 170 is disposed between any adjacent first buffer member 141a and second buffer member 141b, and between any adjacent two first buffer members 141 a. In this way, the third buffer member 170 fills the gap between any adjacent first buffer member 141a and second buffer member 141b and between any adjacent two first buffer members 141a, thereby further supporting the display panel 100.

As shown in fig. 2 and 3, the third buffer member 170 may include a first support member 171, and the first support member 171 fills gaps between any adjacent first buffer member 141a and second buffer member 141b and between any adjacent two first buffer members 141a, thereby providing a good supporting effect to the display panel 100 as a whole and preventing the buffer members 141 from being displaced.

As shown in fig. 3, the third buffer member 170 may further include a second support member 172, the second support member 172 having a hardness greater than that of the first support member 172, and the second support member 172 being located at a central region of the display panel 100. The area of the upper surface and the area of the lower surface of the second supporting member 172 are equal, so that the second supporting member 172 can support the central area of the display panel 100 well, and the display failure problem of the display panel 100 is improved. For example, the second support member 172 may be in the shape of a cylinder, a prism, or the like. The number of the second support parts 172 may be one or more.

The upper surface of the second support member 172 may contact the second buffer layer 150, and the lower surface of the second support member 172 may contact the third buffer layer 160, so that the contact area of the second support member 172 with the second buffer layer 150 is equal to the contact area of the second support member 172 with the third buffer layer 160, so that the second support member 172 may well support the central region of the display panel 100.

Referring to fig. 3, in a preferred embodiment, the number of the second supporting parts 172 is plural. The closer to the center point of the display panel 100, the more densely the second supporting members 172 are arranged, and the farther from the center point of the display panel 100, the more sparsely the second supporting members 172 are arranged, so that not only can the impact force applied to the display panel 100 be rapidly dispersed, but also the second supporting members 172 can well support the center area of the display panel 100.

As shown in fig. 3, the second support members 172 may be arranged in a plurality of rings, and the plurality of rings collectively surround a center point of the display panel 100.

The third buffer member 170 may include only one of the first support member 171 or the second support member 172. The third buffer member 170 may further include both the first support member 171 and the second support member 172.

In one embodiment, the hardness of the material used for the buffer member 141 is greater than the hardness of the material used for the second buffer layer 150 and the hardness of the material used for the third buffer layer 160. In one embodiment, the material used for the buffering member 141 may be polyethylene terephthalate or polyimide resin, or may be a metal material.

In another embodiment, the material of the second buffer layer 150 and the material of the third buffer layer 160 may be non-metal materials with better elasticity, such as PI (polyimide) or rubber. The second buffer layer 150 and the third buffer layer 160 have low hardness, and can provide a good buffer effect on the display panel 100. The buffer member 141 has a greater hardness than the second and third buffer layers 150 and 160, thereby being capable of performing a good supporting function and a force dispersing function with respect to the display panel 100.

The display panel 100 may be a flexible display panel or a hard screen (e.g., an LCD screen). The first buffer layer 140 of the present embodiment may be applied to a flexible display panel or a hard screen. The second buffer layer 150 and the third buffer layer 160 may be applied to a flexible display panel or a hard screen.

Another embodiment of the present invention further provides a display mother board (not shown). A plurality of display panels 100 as in any of the above embodiments are formed on the display mother substrate. By performing processing such as cutting on the display mother board, the display panels 100 are separated from each other, and the display panels 100 can be used independently.

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.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A display panel, comprising:

a substrate; and

a buffer layer group in contact with a back surface of the substrate, the buffer layer group being integral with the substrate; the buffer layer group comprises a first buffer layer, the first buffer layer comprises a plurality of buffer components, the plurality of buffer components are arranged at intervals along the extending direction of the substrate, any buffer component is provided with a first end and a second end opposite to the first end, the area of the first end is larger than that of the second end, the first end faces the buffer component of the substrate to form a first buffer component, the second end faces the buffer component of the substrate to form a second buffer component, and two or more first buffer components are arranged between any two second buffer components; the first buffer part is used for transferring and releasing stress, the second buffer part is used for supporting the substrate, and the supporting capacity of the second buffer part is not weakened;

the first buffer layer also comprises a third buffer component arranged between the adjacent buffer components, the hardness of the material adopted by the third buffer component is less than that of the material adopted by the first buffer component and that of the material adopted by the second buffer component, and the third buffer component is used for supporting and buffering; wherein the third buffer member includes:

a first support member that fills a gap between any adjacent first cushioning members and second cushioning members; and

a plurality of second supporting members having a hardness greater than that of the first supporting members, the second supporting members being arranged in a manner that the second supporting members are less dense in a direction from the center of the display panel toward the center of the display panel; the plurality of second supporting members are arranged in a plurality of rings, and the plurality of rings collectively surround a center point of the display panel.

2. The display panel according to claim 1, wherein a distance between adjacent two of the buffer portions is 40% to 60% of a width of the buffer portions in an arrangement direction of the buffer portions.

3. The display panel according to claim 1 or 2, wherein a hardness of a material used for the third cushioning member is smaller than a hardness of a material used for the first cushioning member and the second cushioning member.

4. The display panel of claim 1, wherein the set of buffer layers further comprises a second buffer layer bonded to a back-facing surface of the substrate and a third buffer layer overlying the first buffer layer, wherein the first buffer layer is between the second buffer layer and the third buffer layer.

5. The display panel according to claim 4, wherein a hardness of a material used for the buffer member is greater than a hardness of a material used for the second buffer layer and greater than a hardness of a material used for the third buffer layer.

6. The display panel according to claim 1, comprising: the packaging structure comprises a packaging layer and a light-emitting functional layer positioned between the forward surface of the substrate and the packaging layer.

7. The display panel according to claim 6, wherein the surface of the substrate facing away from the substrate is a surface of the substrate opposite to the light-emitting functional layer.

8. The display panel according to claim 1, wherein three first buffer members are provided between any two second buffer members.

9. A display mother board comprising a plurality of display panels as claimed in any one of claims 1 to 8 thereon.