CN111427474A - Touch display device and manufacturing method thereof - Google Patents
Touch display device and manufacturing method thereof Download PDFInfo
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- CN111427474A CN111427474A CN202010203668.1A CN202010203668A CN111427474A CN 111427474 A CN111427474 A CN 111427474A CN 202010203668 A CN202010203668 A CN 202010203668A CN 111427474 A CN111427474 A CN 111427474A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
Abstract
The application provides a touch display device and a manufacturing method of the touch display device, wherein the touch display device comprises a display panel, a first touch electrode and a second touch electrode, wherein the first touch electrode and the second touch electrode are arranged on a light-emitting surface of the display panel; the first touch electrode and the second touch electrode are crossed with each other and arranged in an insulating mode; the touch display device further reduces the thickness of the touch display device and improves the integration level of the touch display device while realizing the touch function of the touch display device. According to the manufacturing method of the touch display device, the two layers of touch electrodes with the touch function are directly manufactured on the light emitting surface of the display panel, compared with the prior art, the manufacturing process of the touch display device is simplified, and the manufactured display device is lighter and thinner and has higher integration level.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a touch display device and a method for manufacturing the touch display device.
Background
With the development of display device manufacturing technology, it has become mainstream to fabricate functional components on the surface of the display screen to realize various auxiliary display and control functions of the display device, and the touch display technology is the same.
In the existing touch display device, a component with a touch function is attached to a light emitting surface of a display screen, and a touch chip is used for realizing touch operation of the display device. In the manufacturing process of such a display device, the display panel and the touch component need to be separately manufactured, and then the display panel and the touch component are attached and bound together. The manufacturing of the touch control assembly needs to be completed on a supporting substrate, and when the touch control assembly is finally attached and bound with the display panel, the supporting substrate can be simultaneously transferred onto the display panel, so that the thickness of the display device is too large, the integration level is low, and the display device is not in line with the development direction of the lightness and thinness of the current display device.
Content of application
Based on the defects in the prior art, the application provides a touch display device and a manufacturing method of the touch display device, and the two layers of touch electrodes with the touch function are directly manufactured on the surface of the display panel, so that the thickness of the display device is reduced and the integration level is improved while the manufacturing process of the touch display device is simplified.
The application provides a touch display device, which comprises a display panel, a first touch electrode and a second touch electrode, wherein the first touch electrode and the second touch electrode are arranged on a light-emitting surface of the display panel;
the first touch electrode and the second touch electrode are crossed and insulated from each other.
According to an embodiment of the present disclosure, the first touch electrode is directly disposed on the light emitting surface of the display panel, the first dielectric layer covers the first touch electrode, the second touch electrode is disposed on the first dielectric layer, and the second dielectric layer covers the second touch electrode.
According to an embodiment of the present disclosure, the first touch electrode and the second touch electrode are disposed perpendicular to each other.
According to an embodiment of the present application, the first touch electrode includes a plurality of first diamond-shaped electrodes and a first linear electrode connected to adjacent first diamond-shaped electrodes;
the second touch electrode comprises a plurality of second diamond-shaped electrodes and second linear electrodes connected with the adjacent second diamond-shaped electrodes.
According to an embodiment of the present application, the first touch electrode and the second touch electrode intersect with each other and respectively correspond to the first linear electrode of the first touch electrode and the second linear electrode of the second touch electrode.
According to an embodiment of the present application, the first touch electrode and the second touch electrode are indium tin oxide electrodes, indium zinc oxide electrodes, or silver nanowire electrodes.
According to an embodiment of the present application, the display panel includes:
a substrate base plate;
the thin film transistor layer is arranged on the substrate and comprises a plurality of thin film transistors arranged in an array;
the light-emitting layer is arranged on the thin film transistor layer and comprises a plurality of light-emitting diodes, and the light-emitting diodes are electrically connected with the thin film transistors;
the packaging layer is arranged on the light emitting layer and completely covers the light emitting surface of the display panel;
in the display panel, the surface where the packaging layer is located forms the light emitting surface of the display panel.
The application also provides a manufacturing method of the touch display device, which comprises the following steps:
manufacturing a display panel, wherein the display panel is provided with a light-emitting surface;
manufacturing a first touch electrode on the light-emitting surface of the display panel;
manufacturing a first dielectric layer covering the first touch electrode;
manufacturing second touch control electrodes which are arranged in a crossed mode with the first touch control electrodes on the first dielectric layer;
and manufacturing a second dielectric layer covering the second touch electrode.
According to an embodiment of the present application, a method for manufacturing the first touch electrode includes the following steps:
forming a first conductive layer on the light-emitting surface of the display panel by adopting an evaporation or sputtering method;
patterning the first conductive layer by adopting an etching process to form the first touch electrode;
the method for manufacturing the second touch electrode comprises the following steps:
forming a second conductive layer on the first dielectric layer by using an evaporation or sputtering method;
and patterning the second conductive layer by adopting an etching process to form the second touch electrode.
According to an embodiment of the application, the manufactured first touch electrode comprises a plurality of first diamond-shaped electrodes and first linear electrodes connected with the adjacent first diamond-shaped electrodes;
the second touch electrode formed by manufacturing comprises a plurality of second diamond-shaped electrodes and second linear electrodes connected with the adjacent second diamond-shaped electrodes.
The beneficial effect of this application is: according to the touch display device, the two layers of touch electrodes with the touch function are directly integrated on the surface of the touch display device, so that the purposes of reducing the thickness and improving the integration level of the display device are achieved while the touch display device is in a touch manner; according to the manufacturing method of the touch display device, the two layers of touch electrodes with the touch function are directly manufactured on the light emitting surface of the display panel, compared with the prior art, the manufacturing process of the touch display device is simplified, and the manufactured display device is lighter and thinner and has higher integration level.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic plan structure diagram of a touch display device according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a layered structure of an embodiment of a touch display device provided in an embodiment of the present application;
fig. 3 is a schematic view of a layered structure of another embodiment of a touch display device provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a first touch electrode in a touch display device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a second touch electrode in the touch display device according to the embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a combination of a first touch electrode and a second touch electrode in a touch display device provided in an embodiment of the present application;
fig. 7 is a flowchart of a method for manufacturing a touch display device according to an embodiment of the present disclosure.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
The embodiment of the application provides a touch display device and a manufacturing method of the touch display device, wherein two layers of touch electrodes with touch functions are directly integrated on the surface of the touch display device, so that the thickness of the touch display device is reduced and the integration level of the touch display device is improved while the touch display device is enabled to be in touch; according to the manufacturing method of the touch display device, the two layers of touch electrodes with the touch function are directly manufactured on the light emitting surface of the display panel, compared with the prior art, the manufacturing process of the touch display device is simplified, and the manufactured display device is lighter and thinner and has higher integration level.
As shown in fig. 1 and fig. 2, fig. 1 is a schematic plan structure diagram of a touch display device provided in an embodiment of the present application, and fig. 2 is a schematic layer structure diagram of an implementation manner of the touch display device provided in the embodiment of the present application. The touch display device 01 provided in the embodiment of the present application includes a display panel 10, and a first touch electrode 20 and a second touch electrode 40 disposed on a light-emitting surface of the display panel 10. It should be noted that fig. 1 only shows the first touch electrode 20 and the second touch electrode 40 on the touch display device 01, and other structures in the touch display device 01 are omitted to show the relative position relationship between the first touch electrode 20 and the second touch electrode 40; the light emitting surface of the display panel 10 refers to a surface on which a picture is displayed when the display panel performs a display function, and in this embodiment, refers to a surface on which the film encapsulation layer 154 of the display panel 10 is disposed.
It should be noted that the display panel 10 may be a liquid crystal display panel or an organic light emitting diode display panel, in this embodiment, the display panel 10 is defined as an organic light emitting diode display panel for description, and those skilled in the art can obtain an embodiment applied to a liquid crystal display panel according to the disclosure of the present application without creative work.
The first touch electrode 20 and the second touch electrode 40 are crossed and insulated from each other. It should be noted that the first touch electrodes 20 and the second touch electrodes 40 respectively include a plurality of first touch electrodes 20, the first touch electrodes 20 may be disposed in parallel, and the second touch electrodes 40 may be disposed in parallel, so as to form a mesh arrangement on the light emitting surface of the display panel 10. It should be understood that the mesh structure formed by the first touch electrode 20 and the second touch electrode 40 can ensure that the touch display device 01 can accurately lock a manipulation point.
Optionally, the first touch electrode 20 is directly disposed on the light emitting surface of the display panel 10, a first dielectric layer 30 is disposed between the first touch electrode 20 and the second touch electrode 40, and the first dielectric layer 30 completely covers the first touch electrode 20. Optionally, the first dielectric layer 30 may cover the entire light emitting surface of the display panel 10, or may cover only a portion of the light emitting surface of the display panel 10 along the first touch electrode 20. The first dielectric layer 30 serves to insulate and separate the first touch electrode 20 from the second touch electrode 40. Alternatively, the first dielectric layer 30 may be made of a transparent insulating material such as silicon oxide, silicon nitride, aluminum oxide, hafnium oxide, or organic substance.
Optionally, the second touch electrode 40 is disposed on the first dielectric layer 30, and it should be noted that the first dielectric layer 30 is used to insulate and separate the first touch electrode 20 from the second touch electrode 40, so that the second touch electrode 40 is disposed on the first dielectric layer 30 at least at the intersection with the first touch electrode 20. The surface of the second touch electrode 40 is covered with a second dielectric layer 50 to ensure the electrical insulation between the second touch electrode 40 and the outside. Optionally, the second dielectric layer 50 may cover the entire light emitting surface of the display panel 10, or may cover only a part of the light emitting surface of the display panel 10 along the second touch electrode 40; the second dielectric layer 50 may be made of a transparent insulating material such as silicon oxide, silicon nitride, aluminum oxide, hafnium oxide, or organic substance.
It should be noted that the first touch electrode 20 and the second touch electrode 40 are respectively electrically connected to a touch chip of the touch display device 01, and the touch chip is configured to process touch information detected by the first touch electrode 20 and the second touch electrode 40, so as to implement a precise touch function of the touch display device. It should be understood that, in the embodiment, the two layers of touch electrodes are directly disposed on the light emitting surface of the display panel, so that compared with the prior art, the thickness of the entire touch display device is reduced, and the integration level of the display device is improved.
Optionally, the first touch electrode 20 and the second touch electrode 40 are disposed perpendicular to each other, so as to form a rectangular touch sensing network on the display surface of the display panel 10, further optimizing the touch sensing accuracy of the touch display device 01.
Optionally, the first touch electrode 20 and the second touch electrode 40 are made of a transparent conductive material, for example, the material of the first touch electrode may be indium tin oxide, zinc tin oxide, or a nano silver wire. It should be understood that the transparent conductive material reduces the influence of the transparent conductive material on the aperture ratio and the light transmittance of the touch display device 01 while ensuring the first touch electrode 20 and the second touch electrode 40 to be conductive.
Optionally, as shown in fig. 4 to 6, the first touch electrode 20 includes a plurality of first diamond-shaped electrodes 201 and a first linear electrode 202 connecting adjacent first diamond-shaped electrodes 201; the second touch electrode 40 includes a plurality of second diamond-shaped electrodes 401 and second linear electrodes 402 connected to adjacent second diamond-shaped electrodes 401. The intersections a of the first touch electrodes 20 and the second touch electrodes 40 respectively correspond to the first linear electrodes 202 in the first touch electrodes 20 and the second linear electrodes 402 in the second touch electrodes 40. It should be understood that the above-mentioned structural features and relative position relationship features of the first touch electrode 20 and the second touch electrode 40 are beneficial to maximize the coverage area of the first touch electrode 20 and the second touch electrode 40 on the light emitting surface of the display panel 10, and further optimize the touch accuracy of the touch display device 01.
With continued reference to fig. 1 and 2, the display panel 10 includes a substrate 11, a thin-film-transistor layer 13, a light-emitting layer 15, and an encapsulation layer 16. The substrate 11 may be a hard substrate such as a glass substrate or a flexible substrate such as a polyimide substrate. Optionally, a buffer layer 12 is disposed on the substrate 11, the thin-film transistor layer 13 is disposed on the buffer layer 12, and the buffer layer 12 is made of a transparent organic material, such as polyimide.
The thin film transistor layer 13 includes an active layer 131 disposed on the buffer layer 12, a gate insulating layer 132 disposed on the active layer 131, a gate electrode layer 133 disposed on the gate insulating layer 132, a passivation layer 134 disposed on the buffer layer 12 and covering the active layer 131, the gate insulating layer 132, and the gate electrode layer 133, and a source electrode 135 and a drain electrode 136 disposed on the passivation layer 134 and electrically communicating with the active layer 131. Further, the thin-film transistor layer 13 further includes a scan line and a data line, wherein the scan line is electrically connected to the gate layer 133 for providing a scan signal to the gate layer 133, and the data line is electrically connected to the source electrode 135 for providing a data signal to the source electrode 135. It should be understood that the thin-film transistor layer 13 is used for transmitting a data line signal provided by the data line to the drain electrode 136 under the control of a scan signal provided by the scan line.
Optionally, a flat layer 14 is disposed on the thin-film transistor layer 13 to form a flat surface above the thin-film transistor layer 13, so as to facilitate the arrangement of other elements. The planarization layer 14 may be made of a transparent organic material.
Optionally, the light emitting layer 15 is disposed on the flat layer 14, the light emitting layer 15 includes a pixel electrode layer 151 and a light emitting diode 152 electrically connected to the pixel electrode layer 151, the pixel electrode layer 151 and the light emitting diode 152 are disposed in a package adhesive layer 153, and the package adhesive layer 153 is made of a transparent material.
The pixel electrode layer 151 is electrically connected to the drain 136 through a via hole on the planarization layer 14, and the pixel electrode layer 151 is used for controlling a light emitting function of the light emitting diode 152. Alternatively, the light emitting diodes 152 have a plurality, and include a red light emitting diode that can emit red light, a green light emitting diode that can emit green light, and a blue light emitting diode that can emit blue light. It should be understood that the display function of the touch display device 01 is realized by the light emitting function of the light emitting diodes 152.
The thin film encapsulation layer 16 is disposed on the light emitting layer 15, and is used for keeping the light emitting layer 15 in a closed state and preventing the corrosion of the outside air and moisture. Alternatively, the thin film encapsulation layer 16 is a stacked structure of an organic layer, an inorganic layer and an organic layer, wherein the inorganic layer may be made of a transparent inorganic material such as silicon oxide, silicon nitride, aluminum oxide, hafnium oxide, etc., and the organic layer may be made of a transparent organic material such as polytetrafluoroethylene, etc.
The first touch electrode 20 is disposed on the thin film encapsulation layer 16, and it should be understood that, in the display panel 10, a surface of the encapsulation layer 16 constitutes the light exit surface of the display panel 10.
It should be noted that, in the above embodiment, the thin-film transistor layer 13 of the display panel 10 has a top-gate thin-film transistor structure, and in another embodiment of the present application, the display panel 10 may also have a bottom-gate thin-film transistor structure, which is specifically as follows:
as shown in fig. 3, it should be noted that the difference between the touch display device shown in fig. 3 and the touch display device described in fig. 2 only exists in the structure of the thin-film transistor layer 13.
In the touch display device shown in fig. 3, the gate layer 133 is disposed on the buffer layer 12, the gate insulating layer 132 is disposed on the buffer layer 12 and covers the gate layer 133, the active layer 131 is disposed on the gate insulating layer 132, the source electrode 135 and the drain electrode 136 are respectively electrically connected to the active layer 131, and the passivation layer 134 covers the active layer 131, the source electrode 135 and the drain electrode 136. Optionally, the thin-film transistor layer 13 further includes a scan line and a data line, wherein the scan line is electrically connected to the gate layer 133 for providing a scan signal to the gate layer 133, and the data line is electrically connected to the source electrode 135 for providing a data signal to the source electrode 135. It should be understood that the thin-film transistor layer 13 is used for transmitting a data line signal provided by the data line to the drain electrode 136 under the control of a scan signal provided by the scan line.
To sum up, the touch display device provided by the embodiment of the application comprises the first touch electrode and the second touch electrode which are arranged on the light emitting surface of the display panel, and the touch electrodes are directly integrated on the surface of the display panel, so that the integration level of the touch display device is improved and the whole thickness of the touch display device is reduced while the touch of the display device is realized.
An embodiment of the present application further provides a manufacturing method of a touch display device, as shown in fig. 7, the manufacturing method of the touch display device includes the following steps (shown in fig. 2):
step S101, a display panel 10 is manufactured, wherein the display panel 10 has a light emitting surface.
Specifically, the display panel 10 includes a substrate 11, a thin-film transistor layer 13, a light-emitting layer 15, and an encapsulation layer 16. The substrate 11 may be a hard substrate such as a glass substrate or a flexible substrate such as a polyimide substrate. Optionally, a buffer layer 12 is formed on the substrate 11, the thin-film transistor layer 13 is formed on the buffer layer 12, and the buffer layer 12 is made of a transparent organic material, such as polyimide.
The thin film transistor layer 13 includes an active layer 131 disposed on the buffer layer 12, a gate insulating layer 132 disposed on the active layer 131, a gate electrode layer 133 disposed on the gate insulating layer 132, a passivation layer 134 disposed on the buffer layer 12 and covering the active layer 131, the gate insulating layer 132, and the gate electrode layer 133, and a source electrode 135 and a drain electrode 136 disposed on the passivation layer 134 and electrically communicating with the active layer 131. Further, the thin-film transistor layer 13 further includes a scan line and a data line, wherein the scan line is electrically connected to the gate layer 133 for providing a scan signal to the gate layer 133, and the data line is electrically connected to the source electrode 135 for providing a data signal to the source electrode 135. It should be understood that the thin-film transistor layer 13 is used for transmitting a data line signal provided by the data line to the drain electrode 136 under the control of a scan signal provided by the scan line.
Optionally, a planarization layer 14 is formed on the thin-film transistor layer 13 to form a flat surface above the thin-film transistor layer 13, so as to facilitate the arrangement of other elements. The planarization layer 14 may be made of a transparent organic material.
Optionally, the light emitting layer 15 is fabricated on the flat layer 14, the light emitting layer 15 includes a pixel electrode layer 151 and a light emitting diode 152 electrically connected to the pixel electrode layer 151, the pixel electrode layer 151 and the light emitting diode 152 are commonly disposed in a packaging adhesive layer 153, and the packaging adhesive layer 153 is fabricated from a transparent material.
The pixel electrode layer 151 is electrically connected to the drain 136 through a via hole on the planarization layer 14, and the pixel electrode layer 151 is used for controlling a light emitting function of the light emitting diode 152. Alternatively, the light emitting diodes 152 have a plurality, and include a red light emitting diode that can emit red light, a green light emitting diode that can emit green light, and a blue light emitting diode that can emit blue light. It should be understood that the display function of the touch display device 01 is realized by the light emitting function of the light emitting diodes 152.
The thin film encapsulation layer 16 is disposed on the light emitting layer 15, and is used for keeping the light emitting layer 15 in a closed state and preventing the corrosion of the outside air and moisture. Alternatively, the thin film encapsulation layer 16 is a stacked structure of an organic layer, an inorganic layer and an organic layer, wherein the inorganic layer may be made of a transparent inorganic material such as silicon oxide, silicon nitride, aluminum oxide, hafnium oxide, etc., and the organic layer may be made of a transparent organic material such as polytetrafluoroethylene, etc.
It should be understood that, in the display panel 10, the surface on which the encapsulation layer 16 is located constitutes the light exit surface of the display panel 10.
Step S102, a first touch electrode 20 is fabricated on the light emitting surface of the display panel 10.
Specifically, the method for manufacturing the first touch electrode 20 includes the following steps:
first, a first conductive layer is formed on the light emitting surface of the display panel 10 by evaporation or sputtering, and the material of the first conductive layer may be indium tin oxide, zinc tin oxide, or metallic silver.
Then, patterning the first conductive layer by using an etching process to form the first touch electrode 20, where the etching process may be a dry etching process or a wet etching process or a combination thereof.
Optionally, referring to fig. 4, the manufactured first touch electrode 20 includes a plurality of first diamond-shaped electrodes 201 and first linear electrodes 202 connected to adjacent first diamond-shaped electrodes 201.
Step S103, fabricating a first dielectric layer 30 covering the first touch electrode 20.
Specifically, the method for manufacturing the first dielectric layer 30 may be evaporation or chemical vapor deposition, and the first dielectric layer 30 may cover the entire light emitting surface of the display panel 10, or may cover only a portion of the light emitting surface of the display panel 10 along the first touch electrode 20. Alternatively, the first dielectric layer 30 may be made of a transparent insulating material such as silicon oxide, silicon nitride, aluminum oxide, hafnium oxide, or organic substance.
Step S104, fabricating second touch electrodes 40 on the first dielectric layer 30 and crossing the first touch electrodes 20.
Specifically, the method for manufacturing the second touch electrode 40 includes the following steps:
first, a second conductive layer is formed on the first dielectric layer 30 by evaporation or sputtering, and the material of the second conductive layer can be indium tin oxide, zinc tin oxide, or metallic silver, etc
Then, patterning the second conductive layer by using an etching process to form the second touch electrode 40, where the etching process may be a dry etching process or a wet etching process or a combination thereof.
Optionally, referring to fig. 5, the manufactured second touch electrode 40 includes a plurality of second diamond-shaped electrodes 401 and second linear electrodes 402 connecting adjacent second diamond-shaped electrodes 401.
Further, referring to fig. 6, the intersections a of the first touch electrodes 20 and the second touch electrodes 40 correspond to the first linear electrodes 202 in the first touch electrodes 20 and the second linear electrodes 402 in the second touch electrodes 40, respectively.
Step S105, a second dielectric layer 50 covering the second touch electrode 40 is manufactured.
Specifically, the method for manufacturing the second dielectric layer 50 may be an evaporation method or a chemical vapor deposition method, and the second dielectric layer 50 may cover the entire light emitting surface of the display panel 10, or may cover only a portion of the light emitting surface of the display panel 10 along the second touch electrode 40. Alternatively, the second dielectric layer 50 may be made of a transparent insulating material such as silicon oxide, silicon nitride, aluminum oxide, hafnium oxide, or organic substance.
In summary, the method for manufacturing the touch display device provided in the embodiment of the present application directly manufactures two layers of touch electrodes on the light emitting surface of the display panel, which simplifies the manufacturing process of the touch display device compared with the prior art, and the manufactured display device is thinner and lighter and has higher integration level.
It should be noted that, although the present application has been described with reference to specific examples, the above-mentioned examples are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be limited by the appended claims.
Claims (10)
1. A touch display device is characterized by comprising a display panel, a first touch electrode and a second touch electrode, wherein the first touch electrode and the second touch electrode are arranged on a light-emitting surface of the display panel;
the first touch electrode and the second touch electrode are crossed and insulated from each other.
2. The touch display device of claim 1, wherein the first touch electrode is directly disposed on the light emitting surface of the display panel, the first dielectric layer covers the first touch electrode, the second touch electrode is disposed on the first dielectric layer, and the second dielectric layer covers the second touch electrode.
3. The touch display device of claim 1, wherein the first touch electrode and the second touch electrode are disposed perpendicular to each other.
4. The touch display device of claim 1, wherein the first touch electrode comprises a plurality of first diamond-shaped electrodes and a first linear electrode connecting adjacent first diamond-shaped electrodes;
the second touch electrode comprises a plurality of second diamond-shaped electrodes and second linear electrodes connected with the adjacent second diamond-shaped electrodes.
5. The touch display device according to claim 4, wherein the first touch electrodes and the second touch electrodes cross each other and correspond to the first linear electrodes of the first touch electrodes and the second linear electrodes of the second touch electrodes, respectively.
6. The touch display device according to claim 1, wherein the first touch electrode and the second touch electrode are indium tin oxide electrodes, indium zinc oxide electrodes, or nano silver wire electrodes.
7. The touch display device of claim 1, wherein the display panel comprises:
a substrate base plate;
the thin film transistor layer is arranged on the substrate and comprises a plurality of thin film transistors arranged in an array;
the light-emitting layer is arranged on the thin film transistor layer and comprises a plurality of light-emitting diodes, and the light-emitting diodes are electrically connected with the thin film transistors;
the packaging layer is arranged on the light emitting layer and completely covers the light emitting surface of the display panel;
in the display panel, the surface where the packaging layer is located forms the light emitting surface of the display panel.
8. A manufacturing method of a touch display device is characterized by comprising the following steps:
manufacturing a display panel, wherein the display panel is provided with a light-emitting surface;
manufacturing a first touch electrode on the light-emitting surface of the display panel;
manufacturing a first dielectric layer covering the first touch electrode;
manufacturing second touch control electrodes which are arranged in a crossed mode with the first touch control electrodes on the first dielectric layer;
and manufacturing a second dielectric layer covering the second touch electrode.
9. The method for manufacturing the touch display device according to claim 8, wherein the method for manufacturing the first touch electrode comprises the following steps:
forming a first conductive layer on the light-emitting surface of the display panel by adopting an evaporation or sputtering method;
patterning the first conductive layer by adopting an etching process to form the first touch electrode;
the method for manufacturing the second touch electrode comprises the following steps:
forming a second conductive layer on the first dielectric layer by using an evaporation or sputtering method;
and patterning the second conductive layer by adopting an etching process to form the second touch electrode.
10. The method according to claim 8, wherein the first touch electrodes are formed by a plurality of first diamond-shaped electrodes and first linear electrodes connecting adjacent first diamond-shaped electrodes;
the second touch electrode formed by manufacturing comprises a plurality of second diamond-shaped electrodes and second linear electrodes connected with the adjacent second diamond-shaped electrodes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010203668.1A CN111427474A (en) | 2020-03-20 | 2020-03-20 | Touch display device and manufacturing method thereof |
| PCT/CN2020/083203 WO2021184435A1 (en) | 2020-03-20 | 2020-04-03 | Touch display device and method for manufacturing touch display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010203668.1A CN111427474A (en) | 2020-03-20 | 2020-03-20 | Touch display device and manufacturing method thereof |
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| CN111427474A true CN111427474A (en) | 2020-07-17 |
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- 2020-03-20 CN CN202010203668.1A patent/CN111427474A/en active Pending
- 2020-04-03 WO PCT/CN2020/083203 patent/WO2021184435A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750284A (en) * | 2013-12-27 | 2015-07-01 | 昆山工研院新型平板显示技术中心有限公司 | Touch display device and preparation method thereof |
| CN109542273A (en) * | 2018-12-04 | 2019-03-29 | 上海天马微电子有限公司 | A kind of display panel and display device |
| CN110703941A (en) * | 2019-09-26 | 2020-01-17 | 京东方科技集团股份有限公司 | Touch structure, manufacturing method thereof, touch substrate and touch display device |
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