CN108021288B - Touch panel, manufacturing method thereof and display device - Google Patents
Touch panel, manufacturing method thereof and display device Download PDFInfo
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- CN108021288B CN108021288B CN201711489863.XA CN201711489863A CN108021288B CN 108021288 B CN108021288 B CN 108021288B CN 201711489863 A CN201711489863 A CN 201711489863A CN 108021288 B CN108021288 B CN 108021288B
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
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Abstract
The application relates to the technical field of touch control, in particular to a touch panel, a manufacturing method thereof and a display device, and aims to solve the limitation of fingerprint identification in the prior art. The scheme comprises the following steps: the fretwork region department at every electrode unit of whole touch-control rete, all be provided with the fingerprint identification pattern, thereby, make the whole surface on touch-control rete all distribute the fingerprint identification pattern, the fingerprint identification pattern wherein passes through the electric capacity realization to the fingerprint that the cross position of fingerprint drive electrode and fingerprint induction electrode formed, therefore, the electric capacity interference problem between touch-control rete and the fingerprint identification rete has been avoided, fingerprint identification can all be realized in each region on this touch-control panel, the fingerprint identification limitation that leads to has been avoided only setting up fingerprint identification module in the non-display area particular position of panel among the prior art, and, this scheme is favorable to realizing the comprehensive screen of panel, promote touch-control panel's touch-control and fingerprint identification quality.
Description
Technical Field
The present disclosure relates to the field of touch technologies, and in particular, to a touch panel, a manufacturing method thereof, and a display device.
Background
At present, in a display panel with a fingerprint identification function, a fingerprint identification module of the display panel is generally arranged in a non-display area of the display panel, and is mostly arranged at a position corresponding to an exposed Home key.
However, the fingerprint recognition module is disposed in the non-display area, which inevitably limits the overall screen design of the display panel, and is not favorable for realizing the overall screen of the display panel.
Therefore, it is highly desirable to find a comprehensive screen scheme that can realize fingerprint identification.
Disclosure of Invention
The embodiment of the application provides a touch panel, a manufacturing method thereof and a display device, which are used for solving the technical problems in the prior art.
In order to solve the technical problem, the embodiment of the application adopts the following technical scheme:
a touch panel, comprising: a touch control film layer and a fingerprint identification film layer; the orthographic projection of the fingerprint identification film layer on the touch panel is located in at least one preset hollow area of the touch film layer.
Optionally, the touch film layer includes a plurality of first electrode patterns extending along a first direction, and a plurality of second electrode patterns extending along a second direction and arranged to cross the first electrode patterns in an insulated manner; fingerprint identification rete contains a plurality of fingerprint identification patterns, the orthographic projection of fingerprint identification pattern on touch panel is located the fretwork region of the electrode pattern of touch control rete, every fingerprint identification pattern contains many fingerprint drive electrodes that extend along the third direction to and many fingerprint response electrodes that extend along the fourth direction, fingerprint drive electrode with fingerprint response electrode insulation cross arrangement.
Optionally, in the fingerprint identification film layer: the lead of each fingerprint drive electrode is correspondingly connected with different first pins, and the lead of each fingerprint induction electrode is correspondingly connected with different second pins.
Optionally, in any of the fingerprint identification patterns: the lead of each fingerprint driving electrode is correspondingly connected with different first pins, and the lead of each fingerprint sensing electrode is correspondingly connected with different second pins;
each fingerprint identification pattern is provided with a fingerprint driving electrode which is connected to the same first pin together, and is provided with a fingerprint sensing electrode which is connected to the same second pin together.
Optionally, in the fingerprint identification pattern, a lead of a fingerprint driving electrode and a lead of a fingerprint sensing electrode are led out from any side of the electrode unit; alternatively, the first and second electrodes may be,
and the lead of the fingerprint driving electrode and the lead of the fingerprint sensing electrode are respectively led out from two side surfaces of the electrode unit.
Optionally, the method further comprises: the display film layer comprises a plurality of luminous sub-pixels which are arranged in an array manner;
in the fingerprint identification pattern, the orthographic projection of each fingerprint driving electrode and/or each fingerprint sensing electrode on the touch panel is not overlapped with the orthographic projection of the luminous sub-pixel in the display film layer on the touch panel.
Optionally, the fingerprint identification pattern is made of a transparent conductive material or a metal material.
Optionally, in the touch control film layer, the central distance between adjacent electrode units is 3-7 mm;
in the fingerprint identification film layer, the central distance range of adjacent fingerprint identification patterns is 3-7 mm.
A touch display device comprises the touch panel.
A method for manufacturing a touch panel comprises the following steps:
forming a touch control film layer with at least one preset hollow area;
and forming a fingerprint identification film layer, wherein the orthographic projection of the fingerprint identification film layer on the touch panel is positioned in at least one preset hollow area of the touch film layer.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
through the technical scheme, at the fretwork regional department of every electrode unit of whole touch-control rete, all be provided with the fingerprint identification pattern, thereby, make the whole surface on touch-control rete all distribute the fingerprint identification pattern, the electric capacity that the fingerprint identification pattern wherein formed through fingerprint drive electrode and fingerprint induction electrode's crossover position realizes the discernment to the fingerprint, therefore, the electric capacity interference problem between touch-control rete and the fingerprint identification rete opposite face has been avoided, fingerprint identification can all be realized in each region on this touch panel, the fingerprint identification limitation that leads to has been avoided only setting up the fingerprint identification module in the non-display area particular position of panel among the prior art, and, this scheme is favorable to realizing the comprehensive screen of panel, promote touch-control panel's touch-control and fingerprint identification quality.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a touch panel according to an embodiment of the present disclosure;
fig. 2(a) is a schematic partial structure diagram of a touch panel provided in the present application;
fig. 2(b) is a second schematic partial structure diagram of a touch panel provided in the present application;
fig. 2(c) is a third schematic partial structure diagram of a touch panel provided in the present application;
fig. 3 is a second schematic structural diagram of a touch panel provided in the present application;
fig. 4 is a schematic cross-sectional structure diagram of a touch panel provided in the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to solve the limitation problem in the prior art, a fingerprint identification film layer may be disposed on the entire touch panel, and in consideration of the light shielding problem, a fingerprint identification module may be disposed at a gap between a touch driving electrode and a touch sensing electrode of the touch panel, but this is only for the case that the gap formed by crossing the touch driving electrode and the touch sensing electrode is large enough, however, when the touch driving electrode and the touch sensing electrode are designed as a single-layer crossing electrode having a bridging structure, the gap between the touch driving electrode and the touch sensing electrode is small, and the center distance between adjacent gaps is large, and the fingerprint identification film layer cannot be effectively designed, therefore, the present application designs a structure in which a fingerprint identification pattern is embedded in a hollow area of an electrode unit of the touch driving electrode and the touch sensing electrode in an insulating manner for the single-layer touch film layer having the bridging structure, therefore, similar design can be carried out on the electrode unit of the whole touch panel, and capacitive fingerprint identification of the whole touch panel can be realized on the single-layer touch film layer.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of a touch panel provided in the embodiment of the present application is shown, where the touch panel mainly includes: a touch control film layer 11 and a fingerprint identification film layer 12; the orthographic projection of the fingerprint identification film layer 12 on the touch panel is located in at least one preset hollow area of the touch film layer 11.
Wherein, fingerprint identification rete 12 can set up on touch-control rete 11, can set up in the arbitrary one side that 11 was rubbed in the touch-control, also can set up on other retes, and this application does not prescribe a limit to the rete position relation of fingerprint identification rete 12.
Optionally, in the present application, still referring to fig. 1, the touch film 11 includes a plurality of first electrode patterns 111 extending along a first direction, and a plurality of second electrode patterns 112 extending along a second direction and disposed to cross the first electrode patterns 111 in an insulating manner; the first electrode pattern 111 includes a plurality of electrode units S and a connection unit (reference numeral not shown) connecting adjacent electrode units S, and the second electrode pattern 112 includes a plurality of electrode units S and a bridge unit (reference numeral not shown) connecting adjacent electrode units S; the fingerprint identification film 12 includes a plurality of fingerprint identification patterns 121, the fingerprint identification patterns 121 are embedded in a hollow area (a frame area indicated by a solid line in fig. 1) of each electrode unit S in an insulating manner, each fingerprint identification pattern 121 includes a plurality of fingerprint driving electrodes 1211 extending along a third direction and a plurality of fingerprint sensing electrodes 1212 extending along a fourth direction, and the fingerprint driving electrodes 1211 and the fingerprint sensing electrodes 1212 are arranged in an insulating manner in a crossing manner.
It should be noted that, in the present application, the touch film layer may also be arranged as crossed strip electrodes, and the positions corresponding to the hollow areas of the strip electrodes are provided with fingerprint identification patterns.
In fact, in the present application, the electrode units of the first electrode pattern and the second electrode pattern of the touch film layer may be in a grid pattern, and the electrode units of the first electrode pattern and the electrode units of the second electrode pattern form a planar capacitor in the horizontal panel of the touch panel; the crossover locations are connected by a bridging structure. And the capacitance that fingerprint identification pattern embedded in the electrode unit formed does not cause the interference to touch panel, like this, is convenient for touch-control and fingerprint identification structure's integration.
The wiring of the fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212 is relatively tight, the density of the hollow patterns formed by the fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212, such as cross grids, is relatively high, and the line widths of the fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212 are both smaller than 5 μm, so that the fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212 can be matched with the ridge rib (i.e., the concave-convex lines of the fingerprint) of the finger of the user, and more accurate fingerprint information can be acquired. The fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212 may be disposed at crossing positions with a transparent insulating material, and the fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212 may be disposed on the same layer or different layers, which is not limited in this application.
Through the technical scheme, at the fretwork regional department of every electrode unit of whole touch-control rete, all be provided with the fingerprint identification pattern, thereby, make the whole surface on touch-control rete all distribute the fingerprint identification pattern, the electric capacity that the fingerprint identification pattern wherein formed through the intersection position of fingerprint drive electrode and fingerprint response electrode realizes the discernment to the fingerprint, therefore, electric capacity interference problem between touch-control rete and the fingerprint identification rete has been avoided, fingerprint identification can all be realized in each region on this touch panel, the fingerprint identification limitation that leads to has been avoided only setting up the fingerprint identification module in the non-display area specific position of panel among the prior art, and, this scheme is favorable to realizing the comprehensive screen of panel, promote touch-control panel's touch-control and fingerprint identification quality.
Optionally, in the present application, the first electrode pattern is a touch driving electrode, and the second electrode pattern is a touch sensing electrode; or, the first electrode pattern is a touch sensing electrode, and the second electrode pattern is a touch driving electrode.
Optionally, in the present application, the leads of the first electrode pattern and the second electrode pattern are generally led out from one side or two sides respectively and connected to different leads. The connection structure of the lead wire of the fingerprint driving electrode and the lead wire of the fingerprint sensing electrode can be designed according to the screen body of an actual touch panel. It should be noted that, in order to solve the problem that the fingerprint identification film layer is not directly contacted with the touch control film layer, the lead-out manner of the fingerprint identification film layer may be designed according to actual requirements, such as direct lead-out or punching lead-out.
Optionally, in the present application, in the fingerprint identification film layer: the lead of each fingerprint drive electrode is correspondingly connected with different first pins, and the lead of each fingerprint induction electrode is correspondingly connected with different second pins.
Specifically, referring to fig. 2(a), a schematic diagram of a partial structure of a touch panel provided in the present application is shown, in which only: touch driving electrodes TX1-TX2, wherein each touch driving electrode extends along the transverse direction and is respectively arranged in two rows; each of the touch sensing electrodes RX1-RX2 extends along the longitudinal direction and is arranged in two rows. In the touch panel, the electrode sizes of the touch driving electrodes and the touch sensing electrodes are transparent blocks, preferably diamond blocks, so as to avoid shielding and ensure the display quality.
The touch driving electrode TX1, the touch driving electrode TX2, the touch sensing electrode RX1 and the touch sensing electrode RX2 are mutually crossed, wherein the touch driving electrode TX1 and the touch driving electrode TX2 are respectively electrode patterns formed by connecting three electrode units S, and the touch sensing electrode RX1 and the touch sensing electrode RX2 are respectively electrode patterns formed by connecting two electrode units S. Taking the electrode unit S1 as an example, the hollow area is embedded with the fingerprint identification pattern 1, and the fingerprint identification pattern 1 is arranged with: three fingerprint driving electrodes tx1-tx3 extending along one boundary of the hollowed-out area, and two fingerprint sensing electrodes rx1-rx2 extending along the adjacent boundary of the hollowed-out area; similarly, the hollow area of the electrode unit S2 is embedded with the fingerprint identification pattern 2, and the fingerprint identification pattern 2 is arranged with: three fingerprint driving electrodes tx1-tx3 extending along one boundary of the hollowed-out area, and two fingerprint sensing electrodes rx3-rx4 extending along the adjacent boundary of the hollowed-out area; the hollow area of the electrode unit S3 is embedded with a fingerprint identification pattern 3, and the fingerprint identification pattern 3 is arranged with: three fingerprint driving electrodes tx4-tx6 extending along one boundary of the hollowed-out area, and two fingerprint sensing electrodes rx5-rx6 extending along the adjacent boundary of the hollowed-out area; similarly, other electrode units are connected to the lead wires in a similar manner. The fingerprint driving electrodes tx1-tx6 are connected to the same type of pins, such as first pins, and the different numbers of the first pins represent the different connections; fingerprint driving electrodes rx1-rx4 are shown connected to the same type of pins, such as a second pin, whose different numbers represent different connections to different second pins.
From this, make the lead wire of each extending direction's fingerprint drive electrode all correspond and connect different first pins, the lead wire of each extending direction's fingerprint response electrode all corresponds and connects different second pins, like this, can guarantee to mutually support between the fingerprint identification pattern and use, when the centre-to-centre spacing of adjacent fretwork region is less, can use a fingerprint of a plurality of fingerprint identification pattern cooperations collection jointly simultaneously to make up into corresponding finger print information. The structural design of the touch panel can be suitable for the condition that fingerprint identification patterns are dense, and the fingerprint identification sensitivity of the structural design is higher.
Optionally, in the present application, in any one of the fingerprint identification patterns: the lead of each fingerprint driving electrode is correspondingly connected with different first pins, and the lead of each fingerprint sensing electrode is correspondingly connected with different second pins; each fingerprint identification pattern is provided with a fingerprint driving electrode which is connected to the same first pin together, and is provided with a fingerprint sensing electrode which is connected to the same second pin together.
Specifically, fig. 2(b) is a schematic diagram of a partial structure of a touch panel provided in the present application, and the structure of the touch panel is similar to that of fig. 2(a), and is not repeated here.
The touch driving electrode TX1, the touch driving electrode TX2, the touch sensing electrode RX1 and the touch sensing electrode RX2 are mutually crossed, wherein the touch driving electrode TX1 and the touch driving electrode TX2 are respectively electrode patterns formed by connecting three electrode units S, and the touch sensing electrode RX1 and the touch sensing electrode RX2 are respectively electrode patterns formed by connecting two electrode units S. Taking the electrode unit S1 as an example, the hollow area is embedded with the fingerprint identification pattern 1, and the fingerprint identification pattern 1 is arranged with: three fingerprint driving electrodes tx1-tx3 extending along one boundary of the hollowed-out area, and two fingerprint sensing electrodes rx1-rx2 extending along the adjacent boundary of the hollowed-out area; similarly, the hollow area of the electrode unit S2 is embedded with the fingerprint identification pattern 2, and the fingerprint identification pattern 2 is arranged with: three fingerprint driving electrodes tx1-tx3 extending along one boundary of the hollowed-out area, and two fingerprint sensing electrodes rx1-rx2 extending along the adjacent boundary of the hollowed-out area; the hollow area of the electrode unit S3 is embedded with a fingerprint identification pattern 3, and the fingerprint identification pattern 3 is arranged with: three fingerprint driving electrodes tx1-tx3 extending along one boundary of the hollowed-out area, and two fingerprint sensing electrodes rx1-rx2 extending along the adjacent boundary of the hollowed-out area; similarly, other electrode units are connected to the lead wires in a similar manner. The fingerprint driving electrodes tx1-tx3 are connected to the same type of pins, such as first pins, and the different numbers of the first pins represent the different connections; fingerprint driving electrodes rx1-rx2 are shown connected to the same type of pins, such as a second pin, whose different numbers represent different connections to different second pins.
Therefore, each fingerprint identification pattern can be regarded as the same, and among the plurality of fingerprint driving electrodes, the fingerprint driving electrodes with the same labels are correspondingly connected with the same first pins; among many fingerprint induction electrodes, the fingerprint induction electrode that has the same label number corresponds the same second pin of connection. Therefore, the number of pins can be reduced, and the design structure is simplified. Moreover, each fingerprint identification pattern can be used as an independent fingerprint identification area to carry out fingerprint identification, and the flexibility of the design of the touch control structure is improved. In fact, the fingerprint identification pattern may be different from each other.
In fact, in this application, the line width of the fingerprint drive electrode and the fingerprint response electrode that every fretwork region set up is thinner, and the lead wire that corresponds respectively is also thinner correspondingly, or can understand as the line width the same with fingerprint drive electrode, fingerprint response electrode. Referring to fig. 2(c), taking the touch panel structure in fig. 2(a) as an example, the fingerprint driving electrode tx1 in the hollow area S1 is connected to the fingerprint driving electrode tx1 in the hollow area S2, and is connected to the corresponding first pin through the lead of the fingerprint driving electrode tx1 located at any edge side. In a similar way, other fingerprint driving electrodes or fingerprint sensing electrodes with the same label are connected together in a similar way and are connected to corresponding first pins through a lead, so that the problems that wiring space is large due to the fact that too many leads are led out, wiring is large, wiring complexity is increased due to the fact that more leads are arranged are solved, and the structure of the touch panel is simplified.
Optionally, in the fingerprint identification pattern, the leads of the fingerprint driving electrodes and the leads of the fingerprint sensing electrodes are led out from any surface of the electrode unit; or the lead of the fingerprint driving electrode and the lead of the fingerprint sensing electrode are respectively led out from the two surfaces of the electrode unit.
Optionally, in the present application, the electrode unit has a first hollow pattern; the fingerprint driving electrode and the fingerprint sensing electrode are crossed to form a second hollow pattern which is the same as the first hollow pattern.
Specifically, referring to fig. 3, the electrode unit S is taken as an example of a metal grid electrode, and in fact, the first hollow pattern may be other patterns, and is not limited to a grid. Then, the second hollow pattern formed by the intersection of the corresponding fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212 may also be a grid pattern, and the size of the metal grid in the touch driving electrode 111 and the touch sensing electrode 112 may be the same as the size of the grid formed by the intersection of the fingerprint driving electrode 1211 and the fingerprint sensing electrode 1212. Therefore, grid patterns can be uniformly distributed in the touch panel, and the touch accuracy is improved while the fingerprint identification accuracy is ensured.
Optionally, in this application, the touch panel further includes: the display film layer comprises a plurality of luminous sub-pixels which are arranged in an array manner; in the fingerprint identification pattern, the orthographic projection of each fingerprint driving electrode and/or each fingerprint sensing electrode on the touch panel is not overlapped with the orthographic projection of the luminous sub-pixel in the display film layer on the touch panel.
Specifically, referring to fig. 4, a schematic cross-sectional structure of the touch panel in fig. 3 is shown, taking the example that the display film layer 13 is located below the touch film layer 11 and the fingerprint identification film layer 12 is located above the touch film layer 11, the display film layer 13 includes the light-emitting sub-pixel 131, and in the fingerprint identification pattern, an orthogonal projection of the fingerprint sensing electrode 1212 on the touch panel is not overlapped with an orthogonal projection of the light-emitting sub-pixel 131 in the display film layer 13 on the touch panel. Therefore, the fingerprint identification pattern can reasonably avoid the light-emitting sub-pixels, the light-emitting sub-pixels are prevented from being shielded, and the better light-emitting rate and the display quality are ensured. Wherein, still be provided with the insulating layer between touch-control rete and display rete to and also be provided with the insulating layer between fingerprint identification rete and touch-control rete, all show with the blank.
Optionally, in this application, the fingerprint identification pattern is made of a transparent conductive material or a metal material. Because the line width of fingerprint identification pattern is thinner, consequently, the luminous subpixel is dodged to the equal certain degree of two kinds of materials that this application relates, avoids sheltering from.
Optionally, in the touch control film layer, the central distance between adjacent electrode units is 3-7 mm; in the fingerprint identification film layer, the central distance range of adjacent fingerprint identification patterns is 3-7 mm.
In fact, in this application, above-mentioned size range is not only limited, and the size of the fingerprint identification pattern in the fingerprint identification rete is relevant with touch panel's module structure, apron thickness and screen resolution ratio.
The fingerprint identification method of the fingerprint identification pattern related to the application is capacitive fingerprint identification, and a fingerprint image is obtained by identification depending on the influence of the ridge rib of the fingerprint on the capacitance between the fingerprint driving electrode and the fingerprint sensing electrode.
Simultaneously, this application still provides a touch-control display device, includes: the touch panel according to any one of the above claims. In addition, the touch display device can be any product or component with a display function, such as a mobile phone, a tablet personal computer, a television, a display, a notebook computer, a digital photo frame, a navigator, an intelligent wearable device and the like. Other essential components of the display device are understood by those skilled in the art, and are not described herein or should not be construed as limiting the present application.
In addition, the present application also provides a method for manufacturing a touch panel, including:
forming a plurality of first electrode patterns extending along a first direction, a plurality of electrode units arranged along a second direction and a first fingerprint electrode embedded in a hollow area of each electrode unit in an insulating manner;
forming a first insulating layer, and respectively forming first via holes at two sides of each electrode unit correspondingly arranged along the second direction;
and forming second fingerprint electrodes which are in insulation intersection with the first fingerprint electrodes, and forming a bridging unit at the first via holes of the adjacent electrode units.
In fact, when formed, the method can be specifically manufactured according to the following process sequence:
the method comprises the following steps of firstly, manufacturing a first electrode pattern, a second electrode pattern and a first fingerprint electrode embedded in a hollow-out area of an electrode unit of the first electrode pattern and the second electrode pattern, wherein the first fingerprint electrode can be a fingerprint driving electrode or a fingerprint sensing electrode.
And secondly, manufacturing an insulating layer, forming via holes on two sides of the electrode unit of the second electrode pattern, and forming via holes on one side of the first fingerprint electrode.
And thirdly, manufacturing a bridging unit which is connected with the adjacent electrode units of the second electrode pattern, wherein the bridging unit penetrates through the hole, and simultaneously manufacturing a second fingerprint electrode, a lead of the first fingerprint electrode and a lead of the second fingerprint electrode.
Among the above-mentioned scheme, with the lead wire preparation of fingerprint identification pattern in same one side, in fact, can also make the lead wire of fingerprint identification pattern in both sides respectively, specific manufacture craft includes:
the method comprises the following steps of firstly, manufacturing a first electrode pattern, a second electrode pattern, a first fingerprint electrode embedded in a hollow-out area of an electrode unit of the first electrode pattern and the second electrode pattern, and a lead of the first fingerprint electrode, wherein the first fingerprint electrode can be a fingerprint driving electrode or a fingerprint sensing electrode.
And secondly, manufacturing an insulating layer, forming via holes on two sides of the electrode unit of the second electrode pattern, and forming via holes on one side of the first fingerprint electrode.
And thirdly, manufacturing a bridging unit which is connected with the adjacent electrode units of the second electrode pattern, wherein the bridging unit penetrates through the hole, and simultaneously manufacturing a second fingerprint electrode and a lead of the second fingerprint electrode.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (7)
1. A touch panel, comprising: a touch control film layer and a fingerprint identification film layer; the touch control film layer comprises a plurality of electrode patterns, at least one electrode pattern is provided with a preset hollow area, and the orthographic projection of the fingerprint identification film layer on the touch control panel is located in at least one preset hollow area; the electrode patterns comprise a plurality of first electrode patterns extending along a first direction and a plurality of second electrode patterns extending along a second direction and arranged in an insulated and crossed mode with the first electrode patterns; the fingerprint identification film layer comprises a plurality of fingerprint identification patterns, the orthographic projection of the fingerprint identification patterns on the touch panel is located in a hollow-out area of an electrode pattern of the touch film layer, each fingerprint identification pattern comprises a plurality of fingerprint driving electrodes extending along a third direction and a plurality of fingerprint sensing electrodes extending along a fourth direction, and the fingerprint driving electrodes and the fingerprint sensing electrodes are arranged in an insulating and crossed mode;
wherein the first electrode pattern and the second electrode pattern comprise electrode units;
in the fingerprint identification pattern, a lead of a fingerprint driving electrode and a lead of a fingerprint sensing electrode are led out from any side of the electrode unit; alternatively, the first and second electrodes may be,
the lead of the fingerprint driving electrode and the lead of the fingerprint sensing electrode are respectively led out from two side surfaces of the electrode unit;
the touch panel further includes: the display film layer comprises a plurality of luminous sub-pixels which are arranged in an array manner;
in the fingerprint identification pattern, the orthographic projection of each fingerprint driving electrode and/or each fingerprint sensing electrode on the touch panel is not overlapped with the orthographic projection of the luminous sub-pixel in the display film layer on the touch panel.
2. The touch panel of claim 1, wherein the fingerprint identification film layer comprises: the lead of each fingerprint drive electrode is correspondingly connected with different first pins, and the lead of each fingerprint induction electrode is correspondingly connected with different second pins.
3. The touch panel of claim 1, wherein in any one of the fingerprint identification patterns: the lead of each fingerprint driving electrode is correspondingly connected with different first pins, and the lead of each fingerprint sensing electrode is correspondingly connected with different second pins;
each fingerprint identification pattern is provided with a fingerprint driving electrode which is connected to the same first pin together, and is provided with a fingerprint sensing electrode which is connected to the same second pin together.
4. The touch panel of claim 1, wherein the fingerprint identification pattern is made of a transparent conductive material or a metal material.
5. Touch panel according to one of claims 1 to 4,
in the touch control film layer, the central distance range of adjacent electrode units is 3-7 mm;
in the fingerprint identification film layer, the central distance range of adjacent fingerprint identification patterns is 3-7 mm.
6. A touch display device comprising the touch panel according to any one of claims 1 to 5.
7. A method for manufacturing a touch panel according to any one of claims 1 to 5, comprising:
forming a touch control film layer with at least one preset hollow area;
forming a fingerprint identification film layer, wherein the orthographic projection of the fingerprint identification film layer on a touch panel is positioned in at least one preset hollow area of the touch film layer;
the orthographic projection of the fingerprint identification film layer on the touch panel is located in at least one preset hollow area; the fingerprint identification film layer is arranged on any one side of the touch control film layer or on other film layers except the touch control film layer.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489863.XA CN108021288B (en) | 2017-12-29 | 2017-12-29 | Touch panel, manufacturing method thereof and display device |
| PCT/CN2018/103500 WO2019128288A1 (en) | 2017-12-29 | 2018-08-31 | Touch-control panel and manufacturing method therefor, and display apparatus |
| TW107131196A TWI678652B (en) | 2017-12-29 | 2018-09-05 | Touch panel, manufacturing method thereof and display device |
| US16/424,957 US11182581B2 (en) | 2017-12-29 | 2019-05-29 | Touch panel, manufacturing method thereof and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711489863.XA CN108021288B (en) | 2017-12-29 | 2017-12-29 | Touch panel, manufacturing method thereof and display device |
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| CN108021288A CN108021288A (en) | 2018-05-11 |
| CN108021288B true CN108021288B (en) | 2020-07-31 |
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| CN108196735A (en) * | 2017-12-29 | 2018-06-22 | 昆山国显光电有限公司 | A kind of touch panel and touch control display apparatus |
| WO2019128288A1 (en) * | 2017-12-29 | 2019-07-04 | 昆山国显光电有限公司 | Touch-control panel and manufacturing method therefor, and display apparatus |
| CN109062429B (en) * | 2018-07-06 | 2022-12-13 | 广州国显科技有限公司 | Touch module and display screen |
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