CN211956077U - Electrode connecting assembly and display screen - Google Patents
Electrode connecting assembly and display screen Download PDFInfo
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- CN211956077U CN211956077U CN202020517308.4U CN202020517308U CN211956077U CN 211956077 U CN211956077 U CN 211956077U CN 202020517308 U CN202020517308 U CN 202020517308U CN 211956077 U CN211956077 U CN 211956077U
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Abstract
The utility model discloses an electrode coupling assembling and display screen, electrode coupling assembling includes: the piezoelectric ceramic electronic component comprises a first electrode layer, a piezoelectric material layer, a second electrode layer, a first conductive material layer, a second conductive material layer and a circuit board, wherein the piezoelectric material layer is arranged on the surface of the first electrode layer, the piezoelectric material layer is provided with a through hole, the second electrode layer is arranged on the surface, deviating from the first electrode layer, of the piezoelectric material layer and is provided with an avoiding area for avoiding the through hole, the circuit board is provided with a first connecting end and a second connecting end, the first connecting end is connected with the first conductive material layer, and the second connecting end is connected with the second. Through arranging the through hole on the piezoelectric material layer and arranging the avoidance area on the second electrode layer, when the first connecting end is connected with the first conductive material layer and the second connecting end is connected with the second conductive material layer, the first connecting end and the second connecting end can be on the same plane, so that the packaging process can be reduced during packaging, and mass production can be realized.
Description
Technical Field
The utility model belongs to the technical field of the electrode connection technique and specifically relates to an electrode connecting assembly and display screen are related to.
Background
In the display screen, the ultrasonic sensor is made into a thin film and attached between the thin film transistor and the lower polarizer and backlight of the display screen, so that full-screen fingerprint identification of the display screen is realized.
In the related art, the first electrode layer and the second electrode layer can be respectively connected, so that circuit connection with a circuit board can be realized, but the process is complex, the cost is high, and the method is not suitable for mass production.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an electrode connecting component, through reserve the through-hole at the piezoelectric material layer, when coating the first conductive material layer, cover the through-hole top region to leave the first conductive material layer and dodge the district, through the encapsulation, can exert certain frequency voltage at the electrode both ends.
According to the utility model discloses electrode connecting subassembly of first aspect embodiment includes: the piezoelectric element comprises a first electrode layer, a piezoelectric material layer, a second electrode layer, a first conductive material layer, a second conductive material layer and a circuit board, wherein the piezoelectric material layer is arranged on the surface of the first electrode layer, a through hole is formed in the piezoelectric material layer, the second electrode layer is arranged on the surface, deviating from the first electrode layer, of the piezoelectric material layer and is provided with an avoiding area for avoiding the through hole, the first conductive material layer is arranged at the through hole and is connected with the first electrode layer, the second conductive material layer is arranged on the surface, deviating from the piezoelectric material layer, of the second electrode layer, the circuit board is provided with a first connecting end and a second connecting end, the first connecting end is connected with the first conductive material layer, and the second connecting end is connected with the second conductive material layer.
According to the utility model discloses electrode connecting assembly through set up the through-hole on the piezoelectric material layer, sets up on the second electrode layer and dodges the district, is connected with first conducting material layer when first link to and when the second link is connected with second conducting material layer, first link and second link can be on the coplanar, thereby can reduce the technology of encapsulation when the encapsulation, and then can realize mass production.
According to some embodiments of the invention, the first connection end faces the surface of the layer of piezoelectric material and the second connection end faces the surface of the second electrode layer in parallel. The first connecting end and the second connecting end are arranged on the same plane, so that the display screen can be pressed through a bonding process, and the production cost and the production difficulty of the display screen can be reduced.
According to some embodiments of the invention, the avoidance area is in a projected area on the surface of the piezoelectric material layer is larger than the cross-sectional area of the through hole. The projection area of the avoiding area is larger than the cross-sectional area of the through hole, so that the first connecting end can be conveniently connected with the first conductive material layer, and the second connecting end can be conveniently connected with the second conductive material layer.
According to some embodiments of the invention, the projection of the avoidance area on the surface of the piezoelectric material layer is rectangular. The projection of the avoidance area on the piezoelectric material layer is set to be rectangular, so that the avoidance area can be formed conveniently, and the production difficulty can be reduced.
According to some embodiments of the invention, the cross-section of the through-hole is circular, oval or polygonal. By arranging the cross section of the through hole to be circular, elliptical or polygonal, glue can be facilitated to flow onto the second electrode layer through the through hole.
According to some embodiments of the invention, the first electrode layer and the second electrode layer are transparent graphene electrode layers. The graphene electrode layer has good conductivity, the graphene electrode is high in quality, the electric connection assembly can be lighter, and therefore the light-weight design of the display screen can be achieved.
According to some embodiments of the invention, the first conductive material layer and the second conductive material layer are conductive glue layers. The conductive glue is a special adhesive which has both adhesiveness and conductivity, so that the conductive glue can play a role in adhesion and conductivity.
According to some embodiments of the present invention, the conductive glue layer is an anisotropic conductive glue layer. The anisotropic conductive adhesive can be used as conductive adhesive for packaging electronic components, has the function of one-way (vertical conduction and parallel non-conduction) conduction, can transmit current among the first electrode layer, the piezoelectric material layer and the second electrode layer,
according to the utility model discloses a some embodiments, the circuit board is flexible circuit board and includes two golden fingers, two the golden finger does respectively first link with the second link. The circuit board is arranged to be the flexible circuit board, so that the circuit board has high flexibility, a plurality of leads can be integrated on the flexible circuit board, and the space of the electrode connecting assembly can be reasonably utilized.
According to the utility model discloses display screen of second aspect embodiment, include: the electrode connecting component.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a display screen according to an embodiment of the present invention;
fig. 2 is a top view of an electrode connection assembly according to an embodiment of the present invention.
Reference numerals:
a display screen S;
an electrode connecting assembly 100;
a first electrode layer 10;
a piezoelectric material layer 20; a through hole 21;
a second electrode layer 30; an avoidance zone 31;
a circuit board 40; a first connection end 41; a second connection end 42;
a first conductive material layer 50;
a second layer of conductive material 60.
Detailed Description
Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.
The electrode connecting assembly 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 2, and the present invention also provides a display screen S having the electrode connecting assembly 100.
As shown in fig. 1 and 2, the electrode connecting assembly 100 includes: the piezoelectric element comprises a first electrode layer 10, a piezoelectric material layer 20, a second electrode layer 30, a first conductive material layer 50, a second conductive material layer 60 and a circuit board 40, wherein the piezoelectric material layer 20 is arranged on the surface of the first electrode layer 10, and the piezoelectric material layer 20 is provided with a through hole 21. The second electrode layer 30 is disposed on a surface of the piezoelectric material layer 20 facing away from the first electrode layer 10, and has a relief region 31 that relieves the through-hole 21. By providing the through holes 21 in the piezoelectric material layer 20 and providing the relief regions 31 for relieving the through holes 21 in the second electrode layer 30, there is no separation between the first electrode layer 10 and the second electrode layer 30.
The first conductive material layer 50 is disposed at the through hole 21 and connected to the first electrode layer 10, and the second conductive material layer 60 is disposed on a surface of the second electrode layer 30 facing away from the piezoelectric material layer 20. The circuit board 40 has a first connection terminal 41 and a second connection terminal 42, the first connection terminal 41 is connected to the first conductive material layer 50, and the second connection terminal 42 is connected to the second conductive material layer 60. By providing the first conductive material member and the second conductive material member, the first electrode layer 10 and the second electrode layer 30 can be electrically connected to each other, and a voltage having a certain frequency can be applied to both ends of the electrodes.
Therefore, by arranging the through holes 21 on the piezoelectric material layer 20 and the avoiding region 31 on the second electrode layer 30, when the first connection end 41 is connected with the first conductive material layer 50 and the second connection end 42 is connected with the second conductive material layer 60, the first connection end 41 and the second connection end 42 can be on the same plane, so that the packaging process can be reduced during packaging, and mass production can be realized.
Specifically, the surface of the first connection terminal 41 facing the piezoelectric material layer 20 and the surface of the second connection terminal 42 facing the second electrode layer 30 are parallel. The first connecting end 41 and the second connecting end 42 are arranged on the same plane, so that the display screen S can be pressed through a bonding process, and the production cost and the production difficulty of the display screen S can be reduced. And when bonding is used, the first connection terminal 41 may be connected to the first conductive material layer 50, and the second connection terminal 42 may be connected to the second conductive material layer 60, so that a voltage of a certain frequency may be applied across the electrodes.
As shown in fig. 2, the projected area of the escape region 31 on the surface of the piezoelectric material layer 20 is larger than the cross-sectional area of the through-hole 21. By making the projected area of the escape area 31 larger than the cross-sectional area of the through hole 21, it is possible to facilitate the connection of the first connection terminal 41 with the first conductive material layer 50 and the connection of the second connection terminal 42 with the second conductive material layer 60. Also, interference between the first connection terminal 41 and the piezoelectric material layer 20 can be avoided.
Specifically, as shown in fig. 2, the projection of the avoidance region 31 on the surface of the piezoelectric material layer 20 is rectangular. The projection of the avoidance area 31 on the piezoelectric material layer 20 is set to be rectangular, so that the avoidance area 31 can be conveniently formed, and the production difficulty can be reduced.
As shown in fig. 2, the cross-section of the through-hole 21 may be circular, elliptical, or polygonal. By providing the cross-section of the through-hole 21 with a circular, elliptical or polygonal shape, the flow of glue through the through-hole 21 onto the second electrode layer 30 may be facilitated.
Specifically, the first electrode layer 10 and the second electrode layer 30 are both transparent graphene electrode layers. The graphene electrode layer has good conductivity, the graphene electrode is high in quality, the electric connection assembly can be lighter, and therefore the light-weight design of the display screen S can be achieved.
Both the first conductive material layer 50 and the second conductive material layer 60 may be conductive glue layers. The conductive glue is a special adhesive which has both adhesiveness and conductivity, so that the conductive glue can play a role in adhesion and conductivity. And the line resolution of the conductive glue layer is high, and the conductive glue layer is suitable for finer lead spacing and high-density assembly.
Specifically, the conductive glue layer may be an anisotropic conductive glue layer. The anisotropic conductive adhesive can be used as conductive adhesive for packaging electronic components, and has the function of one-way (vertical conduction and parallel non-conduction) conduction, so that current can be transmitted among the first electrode layer 10, the piezoelectric material layer 20 and the second electrode layer 30, and current loss in the horizontal direction is avoided. And the anisotropic conductive glue can play a role in bonding and fixing.
Specifically, the circuit board 40 may be a flexible circuit board and includes two gold fingers, which are a first connection end 41 and a second connection end 42, respectively. The circuit board 40 may have high flexibility by providing the circuit board 40 as a flexible circuit board, and a plurality of wires may be integrated on the flexible circuit board, so that the space of the electrode connection assembly 100 may be reasonably used.
According to the utility model discloses display screen S of second aspect embodiment, include: the electrode connecting assembly 100 and the display screen S further include a thin film transistor, a backlight module and a liquid crystal display.
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", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and 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.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An electrode connection assembly, comprising:
a first electrode layer;
the piezoelectric material layer is arranged on the surface of the first electrode layer and is provided with a through hole;
the second electrode layer is arranged on the surface, away from the first electrode layer, of the piezoelectric material layer and is provided with an avoidance area avoiding the through hole;
the first conductive material layer is arranged at the through hole and is connected with the first electrode layer;
the second conductive material layer is arranged on the surface, away from the piezoelectric material layer, of the second electrode layer;
the circuit board is provided with a first connecting end and a second connecting end, the first connecting end is connected with the first conductive material layer, and the second connecting end is connected with the second conductive material layer.
2. The electrode connection assembly of claim 1, wherein a surface of the first connection end facing the layer of piezoelectric material and a surface of the second connection end facing the second electrode layer are parallel.
3. The electrode connection assembly according to claim 1, wherein a projected area of the avoidance region on the surface of the piezoelectric material layer is larger than a cross-sectional area of the through hole.
4. The electrode connection assembly of claim 3, wherein a projection of the relief area on the surface of the layer of piezoelectric material is rectangular.
5. The electrode connection assembly of claim 1, wherein the through-hole is circular, elliptical, or polygonal in cross-section.
6. The electrode-connection assembly of any one of claims 1-5, wherein the first electrode layer and the second electrode layer are both transparent graphene electrode layers.
7. The electrode connection assembly of any one of claims 1-5, wherein the first and second layers of conductive material are both layers of conductive glue.
8. The electrode connection assembly of claim 7, wherein the conductive glue layer is an anisotropic conductive glue layer.
9. The electrode-connection assembly of any one of claims 1-5, wherein the circuit board is a flexible circuit board and includes two gold fingers, the two gold fingers being the first connection end and the second connection end, respectively.
10. A display screen, comprising: the electrode connection assembly of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517308.4U CN211956077U (en) | 2020-04-08 | 2020-04-08 | Electrode connecting assembly and display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020517308.4U CN211956077U (en) | 2020-04-08 | 2020-04-08 | Electrode connecting assembly and display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211956077U true CN211956077U (en) | 2020-11-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020517308.4U Active CN211956077U (en) | 2020-04-08 | 2020-04-08 | Electrode connecting assembly and display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211956077U (en) |
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2020
- 2020-04-08 CN CN202020517308.4U patent/CN211956077U/en active Active
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Address after: 330013 No.699 Tianxiang North Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi OMS Microelectronics Co.,Ltd. Address before: 330013 east of Xueyuan 6th Road, south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee before: OFilm Microelectronics Technology Co.,Ltd. Address after: 330013 east of Xueyuan 6th Road, south of Tianxiang Avenue, Nanchang hi tech Industrial Development Zone, Nanchang City, Jiangxi Province Patentee after: OFilm Microelectronics Technology Co.,Ltd. Address before: 330000, No. 1189, Jingdong Avenue, high tech Zone, Nanchang City, Jiangxi Province Patentee before: NANCHANG OFILM BIO-IDENTIFICATION TECHNOLOGY Co.,Ltd. |