CN113311964A - Touch panel and display device - Google Patents
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- CN113311964A CN113311964A CN202110648594.7A CN202110648594A CN113311964A CN 113311964 A CN113311964 A CN 113311964A CN 202110648594 A CN202110648594 A CN 202110648594A CN 113311964 A CN113311964 A CN 113311964A
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- 229910004205 SiNX Inorganic materials 0.000 description 2
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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
-
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
- G06F3/04184—Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The embodiment of the application provides a touch panel and a display device. The peripheral area comprises a substrate, a first metal routing layer and a second metal routing layer. The first metal wiring layer is positioned on one side of the substrate, and a protection line, a grounding wire and a first NFC wire which are sequentially arranged along the direction far away from the operable area are arranged on the first metal wiring layer; the second metal routing layer is located on one side, far away from the substrate base plate, of the first metal routing layer, a second NFC routing is arranged on the second metal routing layer, and the orthographic projection of the second NFC routing on the first metal routing layer is located on one side, far away from the operable area, of the protection line.
Description
Technical Field
The present disclosure relates to display technologies, and particularly to a touch panel and a display device.
Background
Near Field Communication (NFC) is a short-distance high-frequency wireless Communication technology, and the Communication technology combines a non-contact sensing technology and a wireless connection technology, can realize data transmission and exchange in a short distance, and has the advantages of high transmission safety, rapid response and the like. NFC is being gradually applied to mobile payment, identity recognition, anti-counterfeiting, access control, and the like. With the development of technology, NFC is being mounted on display devices such as mobile phones and electronic bracelets.
In the related art, the NFC coil is attached to the back of the display module or the inner side of the middle frame of the display device, which increases the frame width of the display device and the overall thickness of the display device, so how to reduce the thickness and the frame size of the display device is a technical problem to be solved urgently.
Disclosure of Invention
An object of the present invention is to provide a touch panel and a display device, so as to reduce the thickness and the frame size of the display device. The specific technical scheme is as follows:
a first aspect of an embodiment of the present application provides a touch panel, where the touch panel includes an operable area and a peripheral area surrounding the operable area, and the peripheral area of the touch panel includes:
a substrate base plate;
the first metal wiring layer is positioned on one side of the substrate base plate, and a protection line, a grounding line and a first NFC line which are sequentially arranged along the direction far away from the operable area are arranged on the first metal wiring layer;
the second metal routing layer is located on one side, far away from the substrate base plate, of the first metal routing layer, a second NFC routing is arranged on the second metal routing layer, and the orthographic projection of the second NFC routing on the first metal routing layer is located on one side, far away from the operable area, of the protection line.
In some embodiments, an orthographic projection of the second NFC trace on the substrate overlays an orthographic projection of the ground trace on the substrate.
In some embodiments, a via structure is disposed on the second metal routing layer, a portion of the second NFC routing is connected to the first metal routing layer through the via structure, and a gap is formed between the portion of the second NFC routing and the ground routing and between the portion of the second NFC routing and the first NFC routing.
In some embodiments, the first NFC trace is a transparent metal oxide trace and the second NFC trace is a metal trace; or
The first NFC wire is a metal wire, and the second NFC wire is a transparent metal oxide wire.
In some embodiments, the operable region includes the substrate base plate, and a touch pattern layer, a first insulating layer, a bridge layer and a second insulating layer which are located on one side of the substrate base plate and are sequentially arranged along a direction away from the substrate base plate, the touch pattern layer is arranged on the same layer as the first metal routing layer, and the bridge layer is arranged on the same layer as the second metal routing layer.
A second aspect of embodiments of the present application provides a touch panel including an operable area and a peripheral area surrounding the operable area, the peripheral area including:
a substrate base plate;
the metal routing layer is located on one side of the substrate base plate, the NFC routing is arranged on the metal routing layer and comprises a first NFC routing and a second NFC routing, and a protection line, a grounding routing and an NFC routing which are sequentially arranged along the direction away from the operable area are arranged on the metal routing layer.
In some embodiments, the NFC trace includes a first NFC trace and a second NFC trace, the first NFC trace is located on one side of the ground trace away from the protection line, the second NFC trace is located on one side of the first NFC trace away from the ground trace, and a gap is formed between the first NFC trace and the second NFC trace.
In some embodiments, the operable region includes the substrate base plate, and a touch pattern layer, a first insulating layer, a bridging layer, and a second insulating layer disposed on one side of the substrate base plate and sequentially disposed along a direction away from the substrate base plate, and the metal routing layer is disposed on the same layer as the touch pattern layer.
A third aspect of the embodiments of the present application provides a display device, including any one of the touch panels described above.
A fourth aspect of the embodiments of the present application provides a display device, including any one of the touch panels described above.
The embodiment of the application has the following beneficial effects:
the touch panel comprises an operable area and a peripheral area surrounding the operable area, wherein the peripheral area of the touch panel comprises a substrate, a first metal routing layer and a second metal routing layer. The protection line, the grounding line and the first NFC line are arranged on the first metal wiring layer and are sequentially distributed along the direction away from the operable area, namely the first NFC line is located on the outer side of the protection line. The second NFC wiring is arranged on the second metal wiring layer, and the orthographic projection of the second NFC wiring on the first metal wiring layer is also located on the outer side of the protection line, so that the voltage and the magnetic field generated by the first NFC wiring and the second NFC wiring are prevented from influencing the operable area of the touch panel, and the touch performance of the touch panel is influenced. In the touch panel provided by the embodiment of the application, the first NFC wire and the second NFC wire are arranged in the peripheral area of the touch panel, and NFC coils do not need to be attached to the back of the touch panel or the display panel and the inner side of the middle frame, so that the size and the thickness of a frame of the display device are reduced. In addition, the first NFC wiring and the second NFC wiring are respectively located on the upper metal wiring layer and the lower metal wiring layer, the occupied area width of the first NFC wiring and the occupied area width of the second NFC wiring are reduced, and the frame width of the display device is further reduced.
Of course, not all advantages described above need to be achieved at the same time in the practice of any one product or method of the present application.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also obvious for a person skilled in the art to obtain other embodiments according to the drawings.
Fig. 1 is a schematic structural diagram of a touch panel according to some embodiments of the present disclosure;
FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1;
FIG. 3 is another cross-sectional view taken along the line A-A in FIG. 1;
fig. 4 is a further sectional view taken along the line a-a in fig. 1.
Reference numerals: 100-an operable zone; 110-a peripheral zone; 10-a substrate base plate; 20-a first metal routing layer; 201-protection line; 2011-first protection line; 2012-a second protection line; 202-a ground trace; 203-a first NFC trace; 30-a second metal routing layer; 301-a second NFC trace; 40-a touch pattern layer; 50-a first insulating layer; 60-a bridge layer; 70-a second insulating layer; 200-a metal routing layer; 210-NFC trace.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
In order to reduce the thickness and the frame size of the display device, embodiments of the present application provide a touch panel and a display device, which will be described in detail below with reference to the accompanying drawings. The display device may be an electroluminescent display device or a photoluminescent display device. In the case where the display device is an electroluminescent display device, the electroluminescent display device may be an OLED (Organic Light-Emitting Diode) or a QLED (Quantum Dot Light-Emitting Diode). In the case where the display device is a photoluminescent display device, the photoluminescent display device may be a quantum dot photoluminescent display device.
As shown in fig. 1 and fig. 2, the touch panel provided by the embodiment of the present invention includes an operable area 100 and a peripheral area 110 surrounding the operable area 100, and the peripheral area 110 of the touch panel includes a substrate 10, a first metal routing layer 20 and a second metal routing layer 30. The first metal wiring layer 20 is located on one side of the substrate 10, and the first metal wiring layer 20 has a protection line 201, a ground line 202, and a first NFC (Near Field Communication) line 203 sequentially disposed along a direction away from the operable area 100. The second metal routing layer 30 is located on one side of the first metal routing layer 20 far away from the substrate 10, a second NFC trace 301 is disposed on the second metal routing layer 30, and an orthographic projection of the second NFC trace 301 on the first metal routing layer 20 is located on one side of the protection line 201 far away from the operable area 100.
In the touch panel provided in the embodiment of the application, the protection line 201, the grounding line 202, and the first NFC line 203 are disposed on the first metal wiring layer 20, and the protection line 201, the grounding line 202, and the first NFC line 203 are sequentially distributed along a direction away from the operable area 100, that is, the first NFC line 203 is located outside the protection line 201. The second NFC trace 301 is disposed on the second metal routing layer 30, and an orthographic projection of the second NFC trace 301 on the first metal routing layer 20 is also located outside the protection line 201, so as to prevent the voltage and the magnetic field generated by the first NFC trace 203 and the second NFC trace 301 from affecting the operable area 100 of the touch panel, thereby affecting the touch performance of the touch panel. In the touch panel provided in the embodiment of the application, the first NFC trace 203 and the second NFC trace 301 are disposed in the peripheral region 110 of the touch panel, and an NFC coil does not need to be attached to the back of the touch panel or the display panel and the inner side of the middle frame, thereby reducing the size and thickness of the frame of the display device. In addition, the first NFC trace 203 and the second NFC trace 301 are located on the upper and lower metal routing layers respectively, so that the area width occupied by the first NFC trace 203 and the second NFC trace 301 is reduced, and the frame width of the display device is further reduced.
As shown in fig. 1, the first NFC trace 203 and the second NFC trace 301 are disposed around the periphery of the operable area 100 of the touch panel, and then the outgoing lines are connected to the flexible circuit board on the touch panel. As shown in fig. 2, the protection line 201 may include a first protection line 2011 and a second protection line 2012 to further protect the operable area 100 of the touch panel. The first protection line 2011 may be referred to as a Trace line, and the second protection line 2012 may be referred to as a Guard line.
In some embodiments, as shown in fig. 2, the operable area 100 includes a substrate 10, and a touch pattern layer 40, a first insulating layer 50, a bridging layer 60, and a second insulating layer 70 disposed on one side of the substrate 10 and sequentially disposed along a direction away from the substrate 10, wherein the touch pattern layer 40 is disposed on the same layer as the first metal routing layer 20, and the bridging layer 60 is disposed on the same layer as the second metal routing layer 30.
In the embodiment, as shown in fig. 2, the first insulating layer 50 may extend to the peripheral region 110, and the first insulating layer 50 is located between the first metal routing layer 20 and the second metal routing layer 30. The second insulating layer 70 may also extend to the peripheral region 110, and the second insulating layer 70 may cover the second metal routing layer 30. The substrate 10 may be any one or more of SiOx (silicon oxide), SiNx (silicon nitride), and SiON (silicon oxynitride), and the substrate 10 may have a single-layer, multi-layer, or composite-layer structure. The first insulating layer 50 may be made of SiOx, SiNx, SiON, or the like. The second insulating layer 70 may employ an organic material.
In the embodiment of the present application, the bridging layer 60 is connected to the touch pattern layer 40 through a via hole, and a plurality of touch electrodes are disposed on the touch pattern layer 40. The touch pattern layer 40 and the bridge layer 60 are conductive layers. The touch pattern layer 40 and the bridge layer 60 may be made of a metal material, such as one or more of silver, copper, aluminum, titanium, and molybdenum, or an alloy material of the above metals. The touch pattern layer 40 and the bridge layer 60 may also be made of a transparent metal oxide material, such as ITO (Indium Tin Oxides), IZO (Indium zinc Oxides), and the like.
In some embodiments, the orthographic projection of the second NFC trace 301 on the substrate base 10 covers the orthographic projection of the ground trace 202 on the substrate base 10. Specifically, as shown in fig. 2, one side of the second NFC trace 301 close to the operable area 100 may extend toward the operable area 100, such that one side of the second NFC trace 301 close to the operable area 100 overlaps and is above the ground trace 202, so as to increase the width of the second NFC trace 301, thereby increasing the wire area of the second NFC trace 301, thereby reducing the coil resistance of the second NFC trace 301 and reducing the winding impedance. In one example, the impedance of the first NFC trace 203 and the second NFC trace 301 is less than 8.5 ohms.
In addition, a side of the second NFC trace 301 away from the operable region 100 may also extend in a direction away from the operable region 100, so that a projection of the second NFC trace 301 on the substrate base plate 10 partially or completely covers a projection of the first NFC trace 203 on the substrate base plate 10. Based on this, the area of the second NFC trace 301 can be further increased, thereby further reducing the impedance of the second NFC trace 301. The area of the second NFC trace 301 covering the first NFC trace 203 may be adjusted according to the size of the space on the first NFC trace 203, which is not specifically limited in this embodiment of the present application. When the space above the first NFC trace 203 is insufficient, the projection of the second NFC trace 301 on the substrate 10 may be located inside the projection of the first NFC trace 203 on the substrate 10.
In some embodiments, as shown in fig. 3, a via structure is disposed on the second metal routing layer 30, a portion of the second NFC trace 301 is connected to the first metal routing layer 20 through the via structure, and a gap is formed between the portion of the second NFC trace 301 and the ground trace 202 and the first NFC trace 203. As shown in fig. 3, a portion of the structure of the second NFC trace 301 may extend toward the first metal routing layer 20, and is connected to a side surface of the first metal routing layer 20 close to the second metal routing layer 30, and the portion of the structure of the second NFC trace 301 is not in contact with the ground trace 202 and the first NFC trace 203 to avoid short circuit. Part of the structure of the second NFC wiring 301 extends downwards to be connected with the first metal wiring layer 20, so that the wire area of the second NFC wiring 301 is increased, the coil resistance of the second NFC wiring 301 is reduced, and the winding impedance is reduced.
In this embodiment, in order to further reduce the impedance of the second NFC trace 301, the longitudinal dimension of the second NFC trace 301 may be adjusted, that is, the thickness w of the second NFC trace 301 may be increased. Specifically, the thickness w of the second NFC trace 301 may be adjusted according to actual requirements, which is not specifically limited in this embodiment of the application. It is noted that when adjusting the thickness w of the second NFC trace 301, the thickness of the second insulating layer 70 needs to be adjusted synchronously.
In some embodiments, the first NFC trace 203 is a transparent metal oxide trace and the second NFC trace 301 is a metal trace; or the first NFC trace 203 is a metal trace and the second NFC trace 301 is a transparent metal oxide trace.
In this embodiment of the application, since the first NFC trace 203 and the second NFC trace 301 are located on different metal trace layers, under process limitation, a material used for the first NFC trace 203 is different from a material used for the second NFC trace 301. The first NFC trace 203 and the second NFC trace 301 may be made of a metal material, such as one or more of silver, copper, aluminum, titanium, and molybdenum, or an alloy material of the above metals. The first NFC trace 203 and the second NFC trace 301 may also be made of a transparent metal oxide material, such as ITO, IZO, and the like, which is not specifically limited in this embodiment, and it is only necessary to ensure that the materials of the first NFC trace 203 and the second NFC trace 301 are different.
The embodiment of the present application further provides a touch panel, which includes an operable area 100 and a peripheral area 110 surrounding the operable area 100. The peripheral region 110 of the touch panel includes a substrate 10 and a metal routing layer 200. The metal wiring layer 200 is located on one side of the substrate 10, and the metal wiring layer 200 has a protection line 201, a ground line 202, and an NFC line 210 sequentially arranged along a direction away from the operable region 100.
In the touch panel provided in the embodiment of the application, the metal routing layer 200 is provided with the protection line 201, the ground routing 202 and the NFC routing 210, and the protection line 201, the ground routing 202 and the NFC routing 210 are sequentially distributed along a direction away from the operable area 100, that is, the NFC routing 210 is located outside the protection line 201, so as to prevent a voltage and a magnetic field generated by the NFC routing 210 from affecting the operable area 100 of the touch panel, thereby affecting the touch performance of the touch panel. In the touch panel provided in the embodiment of the application, the NFC trace 210 is disposed in the peripheral region 110 of the touch panel, and an NFC coil does not need to be attached to the back of the touch panel or the display panel and the inner side of the middle frame, thereby reducing the size and thickness of the frame of the display device.
In some embodiments, as shown in fig. 4, the NFC trace 210 includes a first NFC trace 203 and a second NFC trace 301, the first NFC trace 203 is located on a side of the ground trace 202 away from the protection line 201, the second NFC trace 301 is located on a side of the first NFC trace 203 away from the ground trace 202, and a gap is formed between the first NFC trace 203 and the second NFC trace 301.
In the embodiment of the present application, the NFC trace 210 includes a first NFC trace 203 and a second NFC trace 301, and both the first NFC trace 203 and the second NFC trace 301 are disposed along the operable area 100 of the touch panel. The number of NFC traces 210 is increased to increase the inductance and induced voltage of the NFC traces 210. The number of the NFC traces 210 may also be adjusted according to actual requirements, which is not specifically limited in this embodiment of the application.
In some embodiments, as shown in fig. 4, the operable area 100 includes a substrate 10, and a touch pattern layer 40, a first insulating layer 50, a bridging layer 60 and a second insulating layer 70 sequentially disposed on one side of the substrate 10 along a direction away from the substrate 10, wherein the metal routing layer 200 and the touch pattern layer 40 are disposed on the same layer.
The embodiment of the application also provides a display device, which comprises the touch panel. The display device provided by the embodiment of the application includes, but is not limited to, a mobile phone, an electronic bracelet, an electronic watch, a tablet computer, electronic paper, and the like.
According to the display device of the embodiment of the application, in the touch panel, the NFC trace 210 is arranged in the peripheral region 110 of the touch panel, so that an NFC coil does not need to be attached to the back of the touch panel or the display panel and the inner side of the middle frame, and the size and thickness of the frame of the display device are reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. A touch panel comprising an operable area and a peripheral area surrounding the operable area, the peripheral area comprising:
a substrate base plate;
the first metal wiring layer is positioned on one side of the substrate base plate, and a protection line, a grounding line and a first NFC line which are sequentially arranged along the direction far away from the operable area are arranged on the first metal wiring layer;
the second metal routing layer is located on one side, far away from the substrate base plate, of the first metal routing layer, a second NFC routing is arranged on the second metal routing layer, and the orthographic projection of the second NFC routing on the first metal routing layer is located on one side, far away from the operable area, of the protection line.
2. The touch panel of claim 1, wherein an orthographic projection of the second NFC trace on the substrate covers an orthographic projection of the ground trace on the substrate.
3. The touch panel of claim 1, wherein a via structure is disposed on the second metal routing layer, a portion of the second NFC routing is connected to the first metal routing layer through the via structure, and a gap is formed between the portion of the second NFC routing and the ground routing and the first NFC routing.
4. The touch panel of claim 1, wherein the first NFC trace is a transparent metal oxide trace and the second NFC trace is a metal trace; or
The first NFC wire is a metal wire, and the second NFC wire is a transparent metal oxide wire.
5. The touch panel of claim 1, wherein the operable area comprises the substrate base plate, and a touch pattern layer, a first insulating layer, a bridge layer and a second insulating layer, which are sequentially disposed on one side of the substrate base plate and along a direction away from the substrate base plate, wherein the touch pattern layer is disposed on the same layer as the first metal routing layer, and the bridge layer is disposed on the same layer as the second metal routing layer.
6. A touch panel comprising an operable area and a peripheral area surrounding the operable area, the peripheral area comprising:
a substrate base plate;
the metal wiring layer is positioned on one side of the substrate base plate, and the metal wiring layer is provided with a protection line, a grounding line and an NFC line which are sequentially arranged along the direction far away from the operable area.
7. The touch panel of claim 6, wherein the NFC trace comprises a first NFC trace and a second NFC trace, the first NFC trace is located on one side of the ground trace away from the protection line, the second NFC trace is located on one side of the first NFC trace away from the ground trace, and a gap is formed between the first NFC trace and the second NFC trace.
8. The touch panel of claim 6, wherein the operable area comprises the substrate, and a touch pattern layer, a first insulating layer, a bridge layer and a second insulating layer sequentially disposed on one side of the substrate and along a direction away from the substrate, and the metal routing layer and the touch pattern layer are disposed on the same layer.
9. A display device, characterized in that the display device comprises the touch panel of any one of claims 1 to 5.
10. A display device, characterized in that the display device comprises the touch panel of any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648594.7A CN113311964B (en) | 2021-06-10 | 2021-06-10 | Touch panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110648594.7A CN113311964B (en) | 2021-06-10 | 2021-06-10 | Touch panel and display device |
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| CN113311964A true CN113311964A (en) | 2021-08-27 |
| CN113311964B CN113311964B (en) | 2024-03-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023173481A1 (en) * | 2022-03-16 | 2023-09-21 | 惠州华星光电显示有限公司 | Display panel |
| WO2024087180A1 (en) * | 2022-10-28 | 2024-05-02 | 京东方科技集团股份有限公司 | Display panel and display apparatus |
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| CN113311964B (en) | 2024-03-15 |
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