CN114035703A

CN114035703A - Display module and display device

Info

Publication number: CN114035703A
Application number: CN202111300855.2A
Authority: CN
Inventors: 高涛; 贵炳强
Original assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Chengdu BOE Optoelectronics Technology Co Ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-02-11
Anticipated expiration: 2041-11-04
Also published as: CN114035703B

Abstract

The embodiment of the application provides a display module assembly and display device, wherein, display module assembly includes: a display panel; the touch control functional layer is arranged on the light emitting side of the display panel and is of a metal grid structure comprising at least one grid line, and at least one hollow part is arranged on the grid line. The technical scheme of this application embodiment can reduce the reflectivity of gridlines to help eliminating gridline shadow, promote the whole impression of seeing of display module assembly.

Description

Display module and display device

Technical Field

The application relates to the technical field of display, especially, relate to a display module assembly and display device.

Background

With the development of display technology, a display module with an FMLOC (Flexible Multi-Layer On Cell, touch display integrated) structure is more and more popular, and compared with an external touch panel, the display module can reduce cost, has higher integration level, is lighter and thinner, and is easier to fold. However, after the grid lines of the metal grid structure of the existing FMLOC are irradiated by external natural light, ambient light can be reflected, so that a certain degree of shadow patterns appear, and the overall appearance of the display module is influenced.

Disclosure of Invention

The embodiment of the application provides a display module and a display device, which are used for solving or relieving one or more technical problems in the prior art.

As an aspect of the embodiments of the present application, an embodiment of the present application provides a display module, including: a display panel; the touch control functional layer is arranged on the light emitting side of the display panel and is of a metal grid structure comprising at least one grid line, and the grid line comprises at least one hollow.

In one embodiment, the grid line comprises a metal wire frame and at least one metal wire connected in the metal wire frame to form the hollow.

In one embodiment, the wire frame is a closed wire frame, and both ends of the wire are connected to the wire frame.

In one embodiment, the metal lines are a plurality of metal lines, and the metal lines are arranged in parallel at intervals.

In one embodiment, the plurality of metal lines are arranged in a direction perpendicular to a length direction of the grid lines.

In one embodiment, the plurality of metal lines are arranged in a direction parallel to a length direction of the grid lines.

In one embodiment, the plurality of metal lines are arranged at an angle α with respect to the length direction of the grid lines, wherein 0 ° < α <90 °.

In one embodiment, the touch functional layer includes a first touch functional layer and a second touch functional layer, and the grid lines of the first touch functional layer and the grid lines of the second touch functional layer have the same hollow shape.

In one embodiment, the grid lines are redundant traces that are not powered.

As another aspect of the embodiments of the present application, an embodiment of the present application provides a display device including the display module according to any one of the above embodiments of the present application.

The embodiment of the application adopts the technical scheme, so that the reflectivity of grid lines can be reduced, the grid line shadow is eliminated, and the overall impression of the display module is improved.

The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present application will be readily apparent by reference to the drawings and following detailed description.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are therefore not to be considered limiting of its scope.

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

fig. 1B is a schematic diagram illustrating an overall structure of a touch functional layer according to an embodiment of the present application;

fig. 1C is a schematic partial cross-sectional structure diagram of a touch functional layer according to an embodiment of the present disclosure;

fig. 1D shows a schematic partial structure diagram of a touch functional layer according to an embodiment of the present application;

FIG. 1E is an enlarged view of section F circled in FIG. 1D;

FIG. 2 is a schematic diagram illustrating a grid line structure of a display module according to a first embodiment of the present application;

FIG. 3 is a schematic diagram illustrating a grid line structure of a display module according to a second embodiment of the present application;

FIG. 4 is a schematic diagram illustrating a grid line structure of a display module according to a third embodiment of the present disclosure;

FIG. 5 is a schematic diagram illustrating a grid line structure of a display module according to a fourth embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of grid lines of a display module according to a fifth embodiment of the present application.

Description of reference numerals:

100: a display module;

110: a display panel; 111: a substrate; 112: a drive functional layer;

113: a display functional layer; 114: a packaging layer;

120: a touch functional layer; 121: grid lines; 1211: a metal wire frame;

1212: a metal wire; 122. 122a, 122b, 122c, 122 d: hollowing out;

123: a first touch functional layer; 124: a second touch functional layer;

125. 125a, 125 b: an electrode; 126: a bridge portion;

130: an insulating layer; 140: and a protective layer.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present application. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

The display module 100 according to the embodiment of the present application is described below with reference to fig. 1A to 6.

Fig. 1A is a schematic diagram illustrating a display module 100 according to an embodiment of the disclosure. As shown in fig. 1, the display module 100 includes: a display panel 110 and a touch functional layer 120. The touch function layer 120 can implement a touch function of the display module 100.

Alternatively, the display panel 110 may include a substrate 111, a driving functional layer 112, a display functional layer 113, and an encapsulation layer 114.

The substrate 111 is a substrate. When the display panel 110 is a rigid panel, the substrate is a rigid substrate such as glass, transparent resin, or the like; when the display panel 110 is a flexible panel, the substrate is a flexible substrate, such as polyimide, polycarbonate, polyethersulfone, polyethylene terephthalate, polyethylene naphthalate, polyarylate, or glass fiber reinforced plastic, and is formed on a glass substrate by coating, and after the preparation of the display panel 110 is completed, the glass substrate is peeled off, and the peeling method can be laser peeling.

The driving function layer 112 is disposed on one side of the substrate. The driving function layer 112 may include a metal layer and a dielectric layer for implementing a driving function of the entire display panel 110. Alternatively, the driving function layer 112 and the substrate 111 may together constitute a back plane of the display panel 110.

The display functional layer 113 is disposed on a side of the drive functional layer 112 remote from the substrate 111. The display function layer 113 may include an EL (Electro luminescence) layer, and the display function layer 113 may be divided into a display region and a non-display region, wherein the display region includes a plurality of pixels for implementing a display function of the entire display panel 110.

The encapsulating layer 114 is disposed on a side of the display functional layer 113 remote from the drive functional layer 112. The Encapsulation layer 114 may be a TFE (Thin Film Encapsulation) layer. When the display panel 110 is a flexible panel, the TFE layer can facilitate the entire display panel 110 to be more flexible and less prone to be broken while achieving the encapsulation effect.

With reference to fig. 1A-2, the touch functional layer 120 is disposed on the light emitting side of the display panel 110, the touch functional layer 120 is a metal grid structure including at least one grid line 121, and the grid line 121 includes at least one hollow 122. Alternatively, the material of the grid lines 121 may be titanium or aluminum, etc., but is not limited thereto.

Exemplarily, in conjunction with fig. 1B, the touch function layer 120 may be disposed on a side of the encapsulation layer 114 away from the display function layer 113. The touch functional layer 120 may include a plurality of electrodes 125, each electrode 125 includes a plurality of metal grids, each metal grid includes a plurality of grid lines 121, the grid lines 121 are staggered to define meshes of the metal grid, and an orthogonal projection of each mesh on a plane where the display panel 110 is located covers at least one pixel of the display functional region 113. The plurality of electrodes 125 may include touch electrodes and redundant electrodes. The touch electrode is electrically connected to an electrical signal to realize the touch function of the display panel 110. No energizing signal may be required in the redundant electrodes, which serve to make the arrangement of the plurality of electrodes 125 more uniform.

Here, the term "open-out" is understood to mean an opening that penetrates the grid lines 121 in the thickness direction and has a closed outer periphery. For example, the hollow 122 may be formed in a structure similar to a window, and the shape of the window may be circular, elliptical, polygonal, or the like. It is understood that the specific shape of the window can be specifically determined according to actual requirements to better meet the actual application.

From this, through setting up above-mentioned fretwork 122 on gridlines 121, when external natural light shines on gridlines 121, the light that is on a parallel with the extending direction of above-mentioned fretwork 122 can see through from fretwork 122, gets into display panel 110 to by absorption or scattering, compare with the present gridlines that are the solid line, has reduced total reflection light intensity, can reduce gridlines 121's reflectivity, thereby help eliminating gridlines 121 shadow, promote the whole impression that shows module 100.

In one embodiment, referring to fig. 3-6, the grid lines 121 include a metal wire frame 1211 and at least one metal wire 1212 connected to the metal wire frame 1211 to form one or more openings 122. In the description of the present application, "a plurality" means two or more.

For example, in the examples of fig. 3 to 6, hollows may be formed between two adjacent metal lines 1212 and between the outermost metal line 1212 and the metal wire frame 1211. For another example, in the example of fig. 3, a metal wire 1212 may be included in the metal wire frame 1211, and both ends of the metal wire 1212 are connected to the metal wire frame 1211 to form the hollow 122 a. Of course, one end of the metal wire 1212 may be connected to the metal wire frame 1211, and the other end of the metal wire 1212 may not be connected to the metal wire frame 1211. That is, the connection manner between the metal wire frame 1211 and the metal wires 1212 therein and the number of the metal wires 1212 are not limited in this embodiment, as long as the metal wire frame 1211 can be hollowed out.

Therefore, through the arrangement of the metal wire frame and the metal wires, on one hand, hollowing can be formed, so that the reflectivity of the whole grid wire to ambient light is reduced; on the other hand, the metal wire frame can be used for connecting metal wires, when the grid wires are electrified, electric signal transmission among the metal wires can be achieved, and when the grid wires are multiple, electric signal transmission among the grid wires can be achieved.

In an alternative embodiment, in conjunction with fig. 4-6, the wire frame 1211 is a closed wire frame, and both ends of the wire 1212 are connected to the wire frame 1211.

Illustratively, the wire frame 1211 may be a closed rectangular wire frame. Wherein, two ends of the metal wire 1212 can be connected to two opposite sides of the metal wire frame 1211 respectively; alternatively, the two ends of the wire 1212 may be connected to two adjacent sides of the wire frame 1211, respectively. Of course, the wire frame 1211 may be a closed circular wire frame, an elliptical wire frame, a polygonal wire frame, or the like, which is not limited in the present application.

Therefore, with the above arrangement, when the grid lines 121 are energized with signals, the electrical signal transmission between the metal wire frames 1211 and the metal wires 1212 is more reliable, and the structure is simple, which is beneficial to improving the production efficiency and the production yield of the grid lines 121.

In an example, the outer circumference of the entire grid line 121 may be the closed wire frame, and in this case, the entire grid line 121 is provided with the hollow 122. So set up, the area of fretwork 122 is great relatively, and when external environment light shined on gridlines 121, fretwork 122 on the whole gridlines 121 can effectively reduce the reflectivity of light, further promoted display module assembly 100's whole impression.

Of course, the present application is not limited thereto, and in another example, the outer periphery of one portion of the grid lines 121 may form a closed wire frame, and another portion of the grid lines 121 may be a common solid line. Thus, the hollow parts 122 are disposed on the one portion of the grid lines 121, and when external ambient light irradiates the grid lines 121, the hollow parts 122 on the one portion of the grid lines 121 can reduce total reflected light intensity to a certain extent, thereby reducing reflectivity. Moreover, the other portion of the grid lines 121 has higher structural strength, so that the damage of the grid lines 121 can be avoided, and the service life of the whole display module 100 is prolonged.

In an alternative embodiment, in conjunction with fig. 4-6, the metal line 1212 is a plurality of lines, and the plurality of lines 1212 may be arranged in parallel and spaced apart. For example, in the example of fig. 4-6, the plurality of grid lines 121 are parallel to each other, and two adjacent metal lines 1212 may be evenly spaced.

Like this, many gridlines 121 can form into periodic grating pattern, and when the interval between two adjacent metal lines 1212 is far less than incident light wavelength, can realize the effect of reflection-type polaroid, when external environment light shines on gridlines 121, make the light that is on a parallel with many metal lines 1212 direction of arranging reflect, and the light that is perpendicular to many metal lines 1212 direction of arranging is absorbed to can furthest reduce the reflectivity of light, promote user experience.

It should be noted that "parallel" is to be understood in the present application in a broad sense, and means that the plurality of metal lines 1212 are disposed substantially in parallel, for example, an included angle between any two of the plurality of metal lines 1212 may be 0 ° to 5 ° (inclusive), that is, the plurality of metal lines 1212 may be completely parallel or have a certain included angle.

In one embodiment, as shown in fig. 4, the arrangement direction of the plurality of metal lines 1212 may be perpendicular to the length direction of the grid lines 121. For example, in the example of fig. 4, a closed wire frame and three metal wires 1212 are shown, the three metal wires 1212 are arranged at intervals along the width direction of the grid line 121, each metal wire 1212 extends along the length direction of the grid line 121, two ends of each metal wire 1212 are respectively connected to two short sides of the closed wire frame, and at this time, hollow portions 122b are formed between two adjacent metal wires 1212 and between the metal wires 1212 and the long sides of the closed wire frame.

With such an arrangement, when external ambient light irradiates on the grid lines 121, light parallel to the length direction of the grid lines 121 can penetrate through the hollow 122 between two adjacent metal lines 1212 and between the metal lines 1212 and the metal wire frame 1211, and only light perpendicular to the length direction of the grid lines 121 can be reflected, so that a semi-transparent and semi-reflective effect can be achieved, and compared with the existing grid lines with a light reflectivity close to 100%, the reflectivity of the ambient light can be reduced by about 50%, so that the shadow of the grid lines 121 can be effectively eliminated.

Three metal lines 1212 are shown in fig. 4 for illustrative purposes, but it is obvious to those skilled in the art after reading the technical solution of the present application that the solution can be applied to other metal lines 1212, which also falls within the protection scope of the present application.

In another embodiment, referring to fig. 5, the arrangement direction of the plurality of metal lines 1212 may be parallel to the length direction of the grid lines 121. For example, in the example of fig. 5, a closed wire frame and nine metal wires 1212 are shown, the nine metal wires 1212 are arranged at intervals along the length direction of the grid wires 121, each metal wire 1212 extends along the width direction of the grid wires 121, two ends of each metal wire 1212 are respectively connected to two long sides of the closed wire frame, and at this time, the hollow 122c is formed between two adjacent metal wires 1212 and between the metal wires 1212 and the short sides of the closed wire frame.

Thus, when external ambient light irradiates on the grid lines 121, light perpendicular to the length direction of the grid lines 121 can pass through the hollow 122 between two adjacent metal lines 1212 and between the metal lines 1212 and the metal wire frame 1211, and only light parallel to the length direction of the grid lines 121 can be reflected, so that the effect of "half-transmitting and half-reflecting" can be achieved, the reflectivity of the ambient light is reduced by about 50%, and the shadow of the grid lines 121 is eliminated.

In yet another embodiment, with reference to fig. 6, the arrangement direction of the plurality of metal lines 1212 forms an angle α with the length direction of the grid lines 121, wherein 0 ° < α <90 °. Here, α may be an acute angle between the arrangement direction of the plurality of metal lines 1212 and the length direction of the metal lines 1212.

For example, in the example of fig. 6, the arrangement direction of the plurality of metal lines 1212 is obliquely arranged with respect to the length direction of the grid lines 121. Two ends of one part of the metal wires 1212 are respectively connected to two long sides of the metal wire frame 1211, and two ends of the other part of the metal wires 1212 are respectively connected to two adjacent sides of the metal wire frame 1211, so that the hollow portions 122d are formed between the two adjacent metal wires 1212 and between the metal wires 1212 and the closed wire frame.

Therefore, when external ambient light irradiates on the grid lines 121, light perpendicular to the arrangement direction of the plurality of metal lines 1212 can penetrate through the hollow portions 122 between two adjacent metal lines 1212 and between the metal lines 1212 and the metal wire frame 1211, and only light parallel to the arrangement direction of the grid lines 121 can be reflected, so that the effect of semi-transmission and semi-reflection can be achieved, the reflectivity of the ambient light is reduced by about 50%, and the shadow of the grid lines 121 is eliminated.

In one embodiment, as shown in fig. 1A and 1C, the touch functional layer 120 includes a first touch functional layer 123 and a second touch functional layer 124, and the grid lines 121 of the first touch functional layer 123 and the hollow-outs 122 of the grid lines 121 of the second touch functional layer 124 have the same shape.

Illustratively, the touch function layer 120 may further include an insulating layer 130 and a protective layer 140. The first touch functional layer 123, the insulating layer 130, the second touch functional layer 124, and the protective layer 140 may be sequentially disposed along the thickness direction of the display panel 110. The first touch function layer 123 and the second touch function layer 124 may be connected through a via hole passing through the interlayer insulating layer 130. The protective layer 140 may protect the entire touch function layer 120 and achieve planarization.

When the electrodes 125 connected to each other are required to be spaced apart, the electrodes 125 may be interconnected by means of a bridge. For example, in the example of fig. 1C, the electrode 125a and the electrode 125b may be bridged by a bridging portion 126 to achieve electrical connection between the electrode 125a and the electrode 125 b.

After the incident light passes through the second touch functional layer 124, the light parallel to the extending direction of the hollow 122 is transmitted, and the light perpendicular to the extending direction of the hollow 122 is reflected, because the shapes of the hollow 122 of the grid lines 121 of the first touch functional layer 123 and the second touch functional layer 124 are the same, the light transmitted through the second touch functional layer 124 can also transmit the first touch functional layer 123, and finally enter the display panel 110 to be absorbed or scattered.

Therefore, by making the shapes of the grid lines 121 of the first touch functional layer 123 and the hollows 122 of the grid lines 121 of the second touch functional layer 124 the same, it is ensured that light can simultaneously penetrate from the hollows 122 of the grid lines 121 of the first touch functional layer 123 and the hollows 122 of the grid lines 121 of the second touch functional layer 124, and thus the reflectivity of the grid lines 121 can be effectively reduced.

In an alternative embodiment, the grid lines 121 may be redundant traces that are not powered. The redundant trace refers to the grid line of the redundant electrode as described above.

Therefore, compared with the existing grid lines, the hollow-out 122 arranged on the grid lines 121 can reduce the cross-sectional area of the grid lines 121 to a certain extent, so that the resistivity of the grid lines 121 can be increased, and through the grid lines 121 being redundant routing, no power-on signal is required in the grid lines 121, thereby avoiding the influence on the current transmission of the touch functional layer 120.

Other configurations of the display module 100 of the above embodiments can be adopted by those skilled in the art, which are now known and will be described in detail herein.

The display device according to the second aspect of the present application includes the display module 100 according to the first aspect of the present application.

According to the display device of the embodiment of the application, by adopting the display module 100, the total reflected light intensity can be reduced, and the reflectivity of the grid lines 121 is reduced, so that the shadow of the grid lines 121 is eliminated, and the overall appearance of the display device is improved.

In the description of the present specification, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. 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 above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the application. The components and arrangements of specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

While the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A display module, comprising:

a display panel;

the touch control functional layer is arranged on the light emitting side of the display panel and is of a metal grid structure comprising at least one grid line, and the grid line comprises at least one hollow part.

2. The display module according to claim 1, wherein the grid line comprises a metal wire frame and at least one metal wire connected in the metal wire frame to form the hollow.

3. The display module according to claim 2, wherein the metal wire frame is a closed wire frame, and both ends of the metal wire are connected to the metal wire frame.

4. The display module according to claim 2, wherein the metal lines are a plurality of metal lines, and the plurality of metal lines are arranged in parallel at intervals.

5. The display module according to claim 4, wherein the arrangement direction of the plurality of metal lines is perpendicular to the length direction of the grid lines.

6. The display module according to claim 4, wherein the arrangement direction of the plurality of metal lines is parallel to the length direction of the grid lines.

7. The display module according to claim 4, wherein an angle α is formed between the arrangement direction of the plurality of metal lines and the length direction of the grid lines, wherein 0 ° < α <90 °.

8. The display module according to any one of claims 1 to 7, wherein the touch functional layer comprises a first touch functional layer and the second touch functional layer, and the grid lines of the first touch functional layer and the grid lines of the second touch functional layer have the same hollow shape.

9. The display module of any one of claims 1-7, wherein the grid lines are unpowered redundant traces.

10. A display device, comprising the display module according to any one of claims 1 to 9.