CN109885200B - Touch display panel and touch display - Google Patents
Touch display panel and touch display Download PDFInfo
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- CN109885200B CN109885200B CN201910087487.4A CN201910087487A CN109885200B CN 109885200 B CN109885200 B CN 109885200B CN 201910087487 A CN201910087487 A CN 201910087487A CN 109885200 B CN109885200 B CN 109885200B
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Abstract
The application discloses a touch display panel and a touch display. This application has a plurality of connecting portions through setting up the touch-control line of walking that borders on special-shaped district to reduce the resistance value of special-shaped touch-control electrode, be favorable to ensureing touch-control display panel's touch sensitivity. The material of a plurality of connecting portions is ITO, can further reduce the resistance value of dysmorphism touch electrode. In addition, a shielding piece is arranged between the touch-control wires of the horizontal touch-control electrode and the touch-control wires of the vertical touch-control electrode so as to avoid interference between the touch-control wires.
Description
Technical Field
The application relates to the technical field of display, in particular to a touch display panel and a touch display.
Background
From a traditional button-type mobile phone to a touch-type smart phone nowadays, the mobile phone is developed towards a high screen ratio, and a full-screen technology is the mainstream in the industry. Comprehensive screen technique not only can increase the area of visibility of cell-phone, has promoted the color value of cell-phone moreover, makes the cell-phone look more has the science and technology to feel, and the positive area of same fuselage can hold bigger screen in addition, has showing promotion to visual experience. In order to meet diversified demands of people, a touch display panel adopting a full-screen technology generally needs to cut edges, and notch portions capable of being embedded with functional modules such as a receiver, a camera and a facial recognition sensor are dug in the touch display panel.
A conventional touch display panel generally includes two types of touch electrodes arranged in a crossed manner, as shown in fig. 1, wherein a plurality of touch electrodes 11 of one type are sequentially arranged along a horizontal direction and form a horizontal touch channel, which is referred to as a first touch electrode 11 herein, and a plurality of touch electrodes 12 of another type are sequentially arranged along a vertical direction and form a vertical touch channel, which is referred to as a second touch electrode 12 herein. In the following description, the first touch electrode 11 is taken as a touch driving electrode and the second touch electrode 12 is taken as a touch sensing electrode, but it should be understood that the first touch electrode 11 may also be a touch sensing electrode and the second touch electrode 12 may also be a touch driving electrode. Mutual capacitance is formed at the crossing position of the first touch driving electrode 11 and the second touch sensing electrode 12, and the mutual capacitance is changed by external capacitance formed by the contact of a finger or the like, so that the specific position of the touch point can be detected.
When the notch portion 13 for inserting a functional module such as an earpiece or a camera is dug out in the touch display panel, a part of the electrodes at the first touch electrode 11 and/or the second touch electrode 12 is usually missing, for example, as shown in fig. 1, a part of the electrodes of the first touch electrode 11 sequentially arranged in the horizontal direction is missing, that is, a part of the electrodes of the horizontal touch electrode is missing, so that the touch channel in the horizontal direction is disconnected, and at this time, the resistance value of the first touch electrode 11 is undoubtedly increased. The increase of the resistance of the first touch electrode 11 may weaken the touch signal of the first touch electrode 11, thereby affecting the touch sensitivity of the touch display panel.
In order to solve the technical problem, in the prior art, a touch trace is usually disposed adjacent to the gap portion 13 to ensure the conductivity of the touch channel in the horizontal direction, as shown in fig. 1, the gap portion 13 is provided with a first touch trace 14, and the first touch trace 14 is located in the non-display area of the touch display panel and connected to the first touch electrode 11. However, in order to meet the narrow frame and frameless requirements of the full-screen technology, the frame of the touch display panel at the notch portion 13 is narrow, that is, the trace space reserved in the non-display area is small, which undoubtedly results in the first touch trace 14 being thin and still having a large resistance value, and thus still results in the touch signal of the first touch electrode 11 being weakened, thereby affecting the touch sensitivity of the touch display panel.
Disclosure of Invention
In view of the above, the present application provides a touch display panel and a touch display.
The touch-control display panel of this application embodiment, its display area is formed with special-shaped district, touch-control display panel walks the line including special-shaped touch-control electrode, insulating layer and the first touch-control that the layering set up in proper order, special-shaped touch-control electrode borders on special-shaped district, a plurality of trompils that the interval set up are seted up to the insulating layer, special-shaped touch-control electrode exposes its surface in trompil department, first touch-control is walked the line and is walked a plurality of connecting portions that line and interval set up including switching on, and connecting portion are arranged in the trompil that corresponds and contact with special-shaped touch-control electrode, switch on the connecting portion that the line connection borders on special-shaped district.
The touch display of an embodiment of the application includes a driving circuit and the touch display panel, where the driving circuit is connected to a first touch trace and a second touch trace of the touch display panel.
The application provides a touch-control display panel and touch-control display has a plurality of connecting portions through setting up the touch-control line that borders on special-shaped district, has increased the area of contact of touch-control line and special-shaped touch-control electrode in other words to can reduce the resistance value of special-shaped touch-control electrode, be favorable to strengthening this special-shaped touch-control electrode's touch-control signal, and then ensure touch-control display panel's touch-control sensitivity.
Drawings
Fig. 1 is a schematic partial structure diagram of a touch display panel according to an embodiment of the prior art;
fig. 2 is a schematic partial structure diagram of a touch display panel according to an embodiment of the present application;
FIG. 3 isbase:Sub>A cross-sectional view of the touch display panel shown in FIG. 2 taken along the A-A direction;
FIG. 4 is a cross-sectional view of the touch display panel shown in FIG. 2 taken along the direction B-B;
fig. 5 is a schematic structural diagram of the conductive traces of the touch display panel shown in fig. 2.
Detailed Description
The primary objectives of the present application are: the touch wiring for conducting the touch channel adjacent to the special-shaped area is designed to be provided with the connecting parts, so that the resistance value of the special-shaped touch electrode adjacent to the special-shaped area is reduced, the touch signal of the special-shaped touch electrode is enhanced, and the touch sensitivity of the touch display panel is ensured.
Based on the above purpose, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. The embodiments described below and the technical features thereof may be combined with each other without conflict. It should be further noted that, for the convenience of description, only some of the structures relevant to the present application are shown in the drawings, not all of the structures. 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.
Fig. 2 is a schematic partial structure diagram of a touch display panel according to an embodiment of the present application. As shown in fig. 2, the touch display panel includes a display Area (Active Area) 21 and a non-display Area 22 located at the periphery of the display Area 21, the display Area 21 is formed with a shaped Area 23, the shaped Area 23 includes, but is not limited to, a notch 23, which is equivalent to the notch 23 formed by recessing the edge of the display Area 21 inwards, and the notch 23 can be used for embedding a functional module such as an earphone, a camera, a face recognition sensor, etc. For convenience of description of the difference from the prior art, the irregular area 23 will be described as an example of the notch 23. In addition, it should be understood that, in fig. 2, only the notch portion 23 is provided at the upper edge of the touch display panel as an example, and other embodiments of the present application may also be provided with the notch portion 23 at one or more other edges of the touch display panel.
The display area 21 is provided with a plurality of first touch electrodes, and the first touch electrodes may be sequentially arranged along a first direction D1, as shown in fig. 2, where the first direction D1 is a horizontal direction, and herein, each of the first touch electrodes is sequentially arranged along the horizontal direction to form a horizontal touch channel. The first touch electrodes can be divided into at least one shaped touch electrode 211 and at least two complete touch electrodes 212. The irregular touch electrode 211 is adjacent to the cut-out 23, which is a cut-out of the touch display panel, and a partial electrode missing exists at a position near the middle of the irregular touch electrode 211 (i.e., due to the cut-out 23) compared with the complete touch electrode 212. Therefore, the area of the shaped touch electrode 211 is smaller than the area of the complete touch electrode 212. Each of the complete touch electrodes 212 may be a diamond-shaped electrode block shown in fig. 2, or may be an electrode strip extending along a predetermined direction (e.g., along a horizontal direction).
Referring to fig. 2 and 5, the touch display panel further includes a first touch trace 213, the first touch trace 213 includes a plurality of connecting portions 214 and a conducting trace 215, the connecting portions 214 are disposed at intervals and connected to the irregular touch electrode 211, and the conducting trace 215 is connected to the connecting portions 214 on two sides of the notch portion 23, so as to ensure the conductivity of the horizontal touch channel. Specifically, as shown in fig. 3, the touch display panel further includes an insulating layer 30, the special-shaped touch electrode 211, the insulating layer 30 and the conducting trace 215 are sequentially layered from bottom to top, the insulating layer 30 is provided with a plurality of openings 31 arranged at intervals, the surface of the special-shaped touch electrode 211 is exposed at the openings 31, and the connection portion 214 is located in the corresponding opening 31 and contacts with the special-shaped touch electrode 211, so as to connect the first touch trace 213 and the special-shaped touch electrode 211.
The touch display panel further includes a plurality of second touch electrodes 221 and a second touch trace 222 located in the notch portion 23, wherein the second touch trace 222 is connected to the second touch electrodes 221, the plurality of second touch electrodes 221 are sequentially arranged along a second direction D2, the second direction D2 intersects the first direction D1, as shown in fig. 2, the first direction D1 is a horizontal direction, the second direction D2 is a vertical direction, and the two directions are perpendicular to each other. Here, the plurality of second touch electrodes 221 are sequentially arranged along the vertical direction and form a vertical touch channel. The first touch trace 213 and the second touch trace 222 are disposed on upper and lower layers, and specifically, as shown in fig. 4, the second touch trace 222 is located below the conducting trace 215 of the first touch trace 213.
Compared with the touch display panel in the prior art shown in fig. 1, the first touch trace 213 designed to connect the horizontal touch channel in the embodiment has a plurality of connecting portions 214, which is equivalent to increase the contact area between the first touch trace 213 and the special-shaped touch electrode 211, so that the resistance of the horizontal touch channel as a whole can be reduced, which is equivalent to reduce the resistance of the special-shaped touch electrode 211, and thus the touch signal of the special-shaped touch electrode 211 can be enhanced, and the touch sensitivity of the touch display panel can be ensured.
The plurality of connection portions 214 may be made of metal or alloy such as copper, molybdenum, and titanium, but may be made of other material with a low impedance coefficient in order to further reduce the resistance value of the irregular touch electrode 211 as a whole, for example, the material of the plurality of connection portions 214 may preferably be Indium Tin Oxide (ITO).
Since the touch electrode is usually made of ito, that is, the material of the irregular touch electrode 211 and the complete touch electrode 212 may be ito, and thus, the plurality of connecting portions 214 and the irregular touch electrode 211 may be located on the same layer. For example, the notch 23 may be dug out and a part of the electrodes at the notch 23, which are originally complete touch electrodes, may be removed at the same time, so as to form the irregular touch electrode 211 and the connection portions 214 at the same time. For another example, the irregular touch electrode 211 may be formed by a photo mask process, and the manufacturing principle and process of the plurality of connection portions 214 and the irregular touch electrode 211 are as follows: coating a whole photoresist on the whole touch electrode, then carrying out exposure and development treatment on the whole photoresist by using a photomask, ashing the exposed photoresist during development, remaining the unexposed photoresist on the whole touch electrode after development, etching to remove the part of the whole touch electrode which is not covered by the photoresist, and finally removing the remaining photoresist to obtain the touch electrode with a preset pattern, namely the special-shaped touch electrode 211 and the connecting parts 214.
Similarly, the material of the conductive trace 215 may also be ito. Since the conductive trace 215 is located in the non-display region 22 of the touch display panel, the conductive trace 215 and the plurality of connecting portions 214 may be located at different layers, that is, the two layers are different layer structures.
Further, in order to meet the design requirements of the narrow frame and the frameless frame of the full-screen technology, the frame of the touch display panel at the notch portion 23 is narrow, that is, the wiring space reserved in the non-display area 22 of the touch display panel is small, and for this reason, the application can design the conducting wiring 215 to be a metal wiring with good ductility and good conductivity. At this moment, this application is equivalent to adopting indium tin oxide and metal stack to walk the line structure, compares in prior art's the design that only adopts the metal to walk the line, and this application can reduce the resistance value of walking the line.
In the present application, the conductive traces 215 may be traces formed by different processes. Specifically, as shown in fig. 5, the conducting traces 215 may include a first trace 216 and a second trace 217, where the first trace 216 is connected to the plurality of connecting portions 214, and the second trace 217 is connected to the first trace 216 located at two sides of the notch portion 23. The first wire 216 and the plurality of connecting portions 214 may be made of the same material, and are both ito, and the second wire 217 is made of metal, so that the first wire 216 and the plurality of connecting portions 214 can be formed in the same process, and the second wire 217 can be formed through another process.
Of course, for an application scenario where the frame of the touch display panel at the notch portion 23 is narrow, the conducting trace 215 may be a trace formed by using the same process. At this time, the materials of the first trace 216 and the second trace 217 may be the same and are both metals.
Referring to fig. 1, in the conventional touch display panel, the second touch electrodes 12 forming the vertical touch channel are further connected with second touch traces 15, and each of the second touch traces 15 needs to intersect with the first touch trace 14 (the area indicated by the dotted line in the figure) in the non-display area, which undoubtedly results in a larger intersection area between the touch trace 14 of the horizontal touch electrode 11 and the touch trace 15 of the vertical touch electrode 12, and interference or erroneous touch action is easily generated therein.
To solve the technical problem, please continue to refer to fig. 2 and fig. 4, a shielding element 24 is disposed between the first touch trace 213 and the second touch trace 222, and the shielding element 24 shields the signal interference between the first touch trace 213 and the second touch trace 22 to avoid generating a false touch action.
In a preferred embodiment of the present application, the material of the shielding element 24 may be a material capable of shielding electromagnetic signals, such as metal, and for different materials, the shielding element 24 may be formed by a suitable process, which is not described herein again.
For example, if the orthographic projection area S1 of the first touch trace 213 on the touch display panel is smaller than the orthographic projection area S2 of the second touch trace 222 on the touch display panel, that is, S1 is smaller than S2, the smallest orthographic projection area S3 of the shielding member 24 on the touch display panel is larger than or equal to the orthographic projection area S1 of the first touch trace 213 on the touch display panel, that is, S3 is greater than or equal to S1. For another example, if the orthographic projection area S1 of the first touch trace 213 on the touch display panel is larger than the orthographic projection area S2 of the second touch trace 222 on the touch display panel, i.e. S1> S2, the minimum orthographic projection area S3 of the shielding element 24 on the touch display panel should be larger than or equal to the orthographic projection area S2 of the second touch trace 222 on the touch display panel, i.e. S3 ≧ S2. In order to shield the interference between the first touch trace 213 and the second touch trace 222 to the maximum, the front projection area of the shielding element 24 on the touch display panel may be designed to be equal to the area of the non-display area 22.
It should be understood that the first touch electrode (including the shaped touch electrode 211) and the second touch electrode 221 may be disposed on the same Substrate of the touch display panel, for example, taking the touch display panel as a liquid crystal display panel with a touch function as an example, the liquid crystal display panel includes a Color Filter Substrate (CF Substrate) and an array Substrate (TFT Substrate) which are disposed at an interval, and liquid crystal molecules filled between the two substrates, the liquid crystal molecules are located in a liquid crystal cell formed by the Color Filter Substrate and the array Substrate, the shaped touch electrode 211 and the second touch electrode 221 may be disposed on the array Substrate of the touch display panel, and correspondingly, the first touch trace 213 and the second touch trace 222 are also disposed on the array Substrate. Of course, the special-shaped touch electrode 211 and the second touch electrode 221 may also be disposed on the color film substrate of the touch display panel. Or, the touch display panel adopts an on-cell technology, and at this time, the special-shaped touch electrode 211 and the second touch electrode 221 are both arranged on a substrate covering the liquid crystal display panel.
Further, in an application scenario where the touch display panel is formed by two substrates arranged opposite to each other in a box, the shaped touch electrode 211 may be disposed on one of the substrates, and the second touch electrode 221 is disposed on the other substrate. For example, still taking the touch display panel as a liquid crystal display panel with a touch function as an example, the specially-shaped touch electrode 211 may be disposed on an array substrate of the touch display panel, and correspondingly, the second touch electrode 221 is disposed on a color film substrate of the touch display panel. At this time, the first touch trace 213 may be disposed on the array substrate of the touch display panel, and the second touch trace 222 is disposed on the color film substrate of the touch display panel.
It should be understood that the touch display panel of the foregoing embodiments of the present application further includes other structures, for example, the touch display panel further includes a gate driving area, a power routing area and a packaging area, wherein the power routing area is disposed between the gate driving area and the packaging area and is used for providing power signals to the pixel units in the display area 21, and the packaging area is attached to the power routing area and is used for protecting the touch display panel. Specifically, the encapsulation area is usually arranged on the outermost side of the non-display area and used for isolating water vapor and oxygen, so that adverse effects of the water vapor and the oxygen on a driving circuit and a wiring structure in the touch display panel are avoided, and normal work of the touch display panel is ensured.
The touch display panel is not limited to the type of the touch display panel, and for example, the touch display panel may be an OLED (Organic Light-Emitting Diode) display panel, a liquid crystal display panel based on LTPS (Low Temperature polysilicon), PSVA (Polymer-stabilized Vertical Alignment), or MVA (Multi-domain Vertical Alignment) technology, or may also be a flexible touch display panel. In addition, compared with a resistive touch display panel, the capacitive touch display panel has the advantages of long service life, high light transmittance, capability of supporting multi-point touch and the like, and the touch display panel can be a capacitive touch display panel.
The application further provides a touch display, which includes a driving circuit and a touch display panel, wherein the driving circuit is electrically coupled to the first touch traces and the second touch traces of the touch display panel. The touch display panel can have the same structural design as the touch display panel of any of the embodiments, and therefore has the same beneficial effects.
The touch display includes, but is not limited to, a mobile terminal such as a smart phone, a PDA (Personal Digital Assistant) or a tablet computer, and a wearable device worn on a limb or embedded in clothes, jewelry, or accessories.
It should be understood that the terms "first" and "second" in the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the embodiment of the present application, all the directional indicators (such as upper, lower, left, right, front, and rear … …) are used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
It should be noted that the above-mentioned embodiments are only examples of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent flow transformations made by the contents of the specification and the drawings, such as the combination of technical features between the embodiments, or the direct or indirect application to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A touch display panel is characterized in that the touch display panel comprises a special-shaped touch electrode, an insulating layer and a first touch wiring, wherein the special-shaped touch electrode, the insulating layer and the first touch wiring are sequentially arranged in a layered mode; the plurality of connecting parts and the special-shaped touch electrode are located on the same layer.
2. The touch display panel according to claim 1, wherein the material of the connecting portions is indium tin oxide.
3. The touch display panel according to claim 1, wherein the conducting traces include a first trace and a second trace, the first trace is connected to the plurality of connecting portions, and the second trace is connected to the first trace adjacent to the irregular area.
4. The touch display panel according to claim 3, wherein the connecting portions and the first traces are made of indium tin oxide, and the second traces are made of metal; or the connecting parts are made of indium tin oxide, and the first wire and the second wire are made of metal.
5. The touch display panel according to claim 1, wherein the irregular area is preferably a notch portion, and the conducting traces are connected to the connecting portions at two sides of the notch portion.
6. The touch display panel according to claim 1, wherein the touch display panel further includes a complete touch electrode, the irregular touch electrode and the complete touch electrode are arranged along a first direction, the touch display panel further includes touch electrodes sequentially arranged along a second direction and a second touch trace adjacent to the irregular area, the first direction and the second direction are crossed, the second touch trace is connected to the touch electrodes, the first touch trace and the second touch trace are arranged up and down, and a shielding member is arranged between the first touch trace and the second touch trace.
7. The touch display panel according to claim 6, wherein the shaped touch electrode and the touch electrode are disposed on a same substrate of the touch display panel.
8. The touch display panel according to claim 6, wherein the touch display panel comprises two substrates arranged oppositely and in a box, the irregular touch electrodes are disposed on one of the substrates, and the touch electrodes are disposed on the other substrate.
9. The touch display panel according to claim 1, wherein the touch display panel is a flexible touch display panel.
10. A touch display, comprising a driving circuit and the touch display panel of any one of claims 1 to 9, wherein the driving circuit is connected to the first touch traces and the second touch traces.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087487.4A CN109885200B (en) | 2019-01-29 | 2019-01-29 | Touch display panel and touch display |
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| CN201910087487.4A CN109885200B (en) | 2019-01-29 | 2019-01-29 | Touch display panel and touch display |
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| CN109885200A CN109885200A (en) | 2019-06-14 |
| CN109885200B true CN109885200B (en) | 2022-12-23 |
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| CN110187070B (en) * | 2019-06-19 | 2021-09-14 | 山东瑞谱检测技术有限公司 | Cereal moisture tester for plant quarantine |
| CN115461702A (en) * | 2019-10-29 | 2022-12-09 | 京东方科技集团股份有限公司 | Touch substrate and touch display device |
| EP4053680A4 (en) * | 2019-10-29 | 2022-11-09 | BOE Technology Group Co., Ltd. | Touch substrate and touch display device |
| CN113518966B (en) * | 2020-02-12 | 2024-03-19 | 京东方科技集团股份有限公司 | Touch display substrate and touch display device |
| EP4123429A4 (en) | 2020-03-19 | 2023-04-12 | BOE Technology Group Co., Ltd. | Touch sensor and display device |
| WO2021184294A1 (en) | 2020-03-19 | 2021-09-23 | 京东方科技集团股份有限公司 | Touch sensor and display device |
| US11874987B2 (en) | 2020-03-19 | 2024-01-16 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Touch sensor and display apparatus |
| WO2021184292A1 (en) | 2020-03-19 | 2021-09-23 | 京东方科技集团股份有限公司 | Touch sensor and display device |
| CN113874821B (en) | 2020-03-19 | 2023-08-15 | 京东方科技集团股份有限公司 | Touch sensor and display device |
| CN111949158B (en) * | 2020-08-11 | 2022-03-01 | 昆山国显光电有限公司 | Touch display panel and touch display device |
| CN112905048B (en) * | 2021-02-07 | 2024-04-23 | 京东方科技集团股份有限公司 | Touch display screen and display device |
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| TW201523400A (en) * | 2013-12-09 | 2015-06-16 | Wintek Corp | Touch panel |
| CN107179636B (en) * | 2017-05-26 | 2020-09-04 | 厦门天马微电子有限公司 | Display panel and display device |
| CN107291303B (en) * | 2017-08-02 | 2020-09-25 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
| CN108388368B (en) * | 2018-01-31 | 2021-07-30 | 上海天马微电子有限公司 | Touch display panel and touch display device |
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Application publication date: 20190614 Assignee: YUNGU (GU'AN) TECHNOLOGY Co.,Ltd.|BAZHOU YUNGU ELECTRONIC TECHNOLOGY Co.,Ltd.|KUNSHAN NEW FLAT PANEL DISPLAY TECHNOLOGY CENTER Co.,Ltd. Assignor: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. Contract record no.: X2019990000156 Denomination of invention: A touch display panel and a touch display License type: Common License Record date: 20191030 |
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Effective date of registration: 20191205 Address after: No. 2 Xiangshan Avenue, Yongning Street, Zengcheng District, Guangzhou, Guangdong province (the core of Zengcheng economic and Technological Development Zone) Applicant after: Guangzhou Guoxian Technology Co.,Ltd. Address before: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou, 4 Applicant before: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS Co.,Ltd. |
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