CN203260022U - Capacitive touchpad and display device - Google Patents
Capacitive touchpad and display device Download PDFInfo
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- CN203260022U CN203260022U CN 201320217383 CN201320217383U CN203260022U CN 203260022 U CN203260022 U CN 203260022U CN 201320217383 CN201320217383 CN 201320217383 CN 201320217383 U CN201320217383 U CN 201320217383U CN 203260022 U CN203260022 U CN 203260022U
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- transparent conductive
- capacitive touch
- touch pad
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Abstract
The utility model discloses a capacitive touchpad. The capacitive touchpad comprises a substrate. The substrate comprises a plurality of transparent conductive patterns which are not provided with overlapping regions and have the transmission function of touch signals. Each transparent conductive pattern is an integrally formed pattern which is made of the same layer of materials. The utility model further provides a display device comprising the capacitive touchpad. By means of the capacitive touchpad and the display device, a mask can be removed, manufacturing cost is low, production efficiency is high, and the percent of pass is high.
Description
Technical Field
The utility model relates to a touch-sensitive screen technique especially indicates a capacitanc touch pad and display device.
Background
Touch panels (Touch panels) are inductive liquid crystal display devices capable of receiving input signals such as contacts, and when a user touches a graphic button on a screen, a tactile feedback system on the screen can drive various connection devices according to a pre-programmed program and display various information through a liquid crystal display screen.
Currently, touch screens are roughly classified into four types: resistive touch screens, capacitive-inductive touch screens, surface acoustic wave touch screens, and infrared touch screens.
The capacitive touch screen has the characteristics of low manufacturing cost, easiness in realizing multi-point touch control and the like, and is widely applied. Fig. 1 is a schematic structural diagram of a touch panel in a conventional capacitive touch screen. The bridging structure first forms an Indium Tin Oxide (ITO) or a metal conduction bridging structure 1 through a first mask (mask), and then forms an insulating layer (not shown) through pecvd (plasma Enhanced Chemical Vapor deposition); forming via holes 2 at two ends of the bridging structure 1 through the mask for the second time, and arranging a conductive metal strip below the via holes 2; and then a third mask is used to form a conductive ITO pattern 3. In the structure shown in fig. 1, multiple ITO patterns in a row can be made conductive through the bridging structure 1 and the via 2. In the bridged structure shown in FIG. 1, the ITO patterns in a row have the same shape and area. When a human hand or other conductors contact the surface of the touch screen, electric signals are generated due to mutual capacitance and self-capacitance effects and are fed back to the transverse and longitudinal sensing lines (for example, transverse sensing lines 4 are led out from the left and right in fig. 1, and longitudinal sensing lines 5 are led out from the lower part), the sensing lines provide the electric signals to the controller, and the coordinates X and Y of a touch point are located through recognition of the controller, so that touch operation is realized. Because this kind of structure often needs the mask three times, so manufacturing cost is high, and production efficiency is low and the yields is low.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a capacitive touch panel and a display device to solve the problems of high manufacturing cost, low production efficiency and low yield of the existing capacitive touch screen.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
the utility model provides a capacitanc touch pad, include: the touch screen comprises a substrate base plate, wherein the substrate base plate comprises a plurality of transparent conductive patterns which have no overlapped area and have a touch signal transmission function, and each transparent conductive pattern is an integrally molded pattern formed by materials of the same layer.
Preferably, each of the transparent conductive patterns is an integrally formed pattern formed by a single mask patterning process from the same layer of material.
Preferably, adjacent edge lines of at least one pair of adjacent transparent conductive patterns among the plurality of transparent conductive patterns are parallel.
Preferably, the plurality of transparent conductive patterns are arranged in parallel in a first direction on the capacitive touch panel.
Preferably, edges of adjacent two transparent conductive patterns are in the form of gear engagement.
Preferably, the shapes of the respective transparent conductive patterns are the same.
Preferably, the plurality of transparent conductive patterns transmit the touch signal through sensing lines respectively arranged at two side edge regions of the capacitive touch pad.
Preferably, each of the transparent conductive patterns includes a plurality of connected sub-patterns having edge line shapes including one or more of a polygon, a zigzag, an arc, a wave and an irregular line.
Preferably, the area sizes of the respective sub-patterns in each of the transparent conductive patterns are not equal to each other.
The utility model also provides a display device, including foretell capacitanc touch pad.
Preferably, the display device further comprises a display panel, the capacitive touch pad is in signal connection with the display panel, and the capacitive touch pad transmits the acquired touch signal to the display panel.
Preferably, the display device further comprises a thin film transistor array substrate, and the display device is formed after the capacitive touch panel and the thin film transistor array substrate are aligned.
The embodiment of the utility model provides an among touch-sensitive plate board and display device, the transparent conducting pattern on the capacitive touch pad is integrated into one piece, just can prepare the completion through mask composition technology (mask) once, compares with current bridge type capacitive touch pad, has and saves the mask, need not equipment transformation (for example do not increase sensing line figure and IC pin figure), low in manufacturing cost, production efficiency is high, advantages such as yields height.
Drawings
Fig. 1 is a schematic structural diagram of a touch panel in a conventional capacitive touch screen;
fig. 2 is a first schematic structural diagram of a capacitive touch pad according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a capacitive touch panel according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further elaborated with reference to the accompanying drawings and specific embodiments.
The embodiment of the utility model provides a capacitive touch pad includes a substrate base plate, includes a plurality of transparent conductive pattern that have touch signal transfer function that do not have the overlap region on the substrate base plate, and wherein every transparent conductive pattern is by the integrated into one piece pattern that forms with the layer material.
The above capacitive touch pad structure is described below by way of specific embodiments,
fig. 2 is a schematic structural diagram of a preferred capacitive touch panel according to an embodiment of the present invention, wherein each transparent conductive pattern is an integrally formed pattern formed by a same layer material through a one-step mask patterning process, and each transparent conductive pattern preferably includes a plurality of connected sub-patterns. Compare with the mode that electrically conducts among the prior art regional through via hole connection, the utility model discloses a pattern integrated into one piece's mode need not to pass through via hole connection between each sub-pattern of transparent conductive pattern, but integrative.
Optionally, the edge line shape of the sub-pattern comprises one or more of a polygon, a zigzag, an arc, a wave, and an irregular line; preferably, the area sizes of the sub-patterns in each transparent conductive pattern are different (further, the area sizes of the patterns on the touch panel can be also different); the shapes of the respective sub-patterns in each transparent conductive pattern may be the same or different (further, the shapes of the respective patterns on the touch panel may also be made the same or different). As shown, the sub-patterns 61, 62, 63, 64 are connected to form a transparent conductive pattern 6; the sub-patterns 71, 72, 73, 74 are connected to each other, and constitute a transparent conductive pattern 7. In this embodiment, the sub-patterns in each transparent conductive pattern have two shapes: triangles (e.g., sub-patterns 62, 63) and trapezoids (e.g., sub-patterns 61, 64); in this embodiment, the area sizes of the sub-patterns in each transparent conductive pattern are not equal, for example, the area sizes of the sub-patterns 61, 62, 63, 64 are not equal, and the area sizes of the sub-patterns 71, 72, 73, 74 are not equal.
It should be noted that, in the embodiment of the present invention, the transparent conductive patterns are formed by using a transparent conductive material, and then each transparent conductive pattern can preferably transmit a touch signal through the sensing lines respectively arranged in the edge areas of both sides of the capacitive touch pad, and each transparent conductive pattern can correspond to one sensing line. As in fig. 2, the transparent conductive pattern 6 transfers a touch signal out through the sensing line 8. Because the area size of each sub-pattern in every transparent conductive pattern is inequal, then different sub-pattern regions can produce different capacitance effect (mutual capacitance and self-capacitance effect), correspondingly, the signal of telecommunication that produces is also different, when the controller receives the signal of telecommunication of sensing line conveying, just can fix a position the corresponding region according to the sensing line of transmission signal and carry out the analysis to the signal of telecommunication to can pinpoint the touch position (if, the area size of each pattern on the touch pad is inequality, then just can fix a position the corresponding region to the signal of telecommunication is analyzed).
It should be further noted that the case where the area size of each sub-pattern is different in the above embodiments is only a preferred example, and this embodiment also covers the case where the area size of each sub-pattern is the same, or the case where the shape and the area size are the same, and at this time, the position where the touch signal is generated can still be recognized by identifying the difference of the sensor lines connected to each sub-pattern, and although the accuracy is slightly lower than the case of "the area size of each sub-pattern is different", the function of touch control by the transmission of the touch signal by the transparent conductive pattern and the sensor lines can still be realized, and the technical problem that can be solved by the "integrally formed transparent conductive pattern" can also be solved, thereby achieving the effects of reducing the production cost without forming the transparent touch conductive pattern multiple times.
In this embodiment, optionally, the shape of each transparent conductive pattern is the same; the plurality of transparent conductive patterns are arranged in parallel in a first direction on the capacitive touch panel, where the first direction is a lateral direction or a longitudinal direction. In the structure shown in fig. 2, a plurality of transparent conductive patterns are arranged in a longitudinal direction, and each of the transparent conductive patterns includes sub-patterns arranged in a lateral direction. Further, in the structure shown in fig. 2, adjacent edge lines of at least one pair of adjacent transparent conductive patterns are parallel, for example, adjacent edge lines of the transparent conductive patterns 6 and 7 are parallel; the transparent conductive patterns 6 and 7 are adjacent two transparent conductive patterns, and edges of the adjacent two transparent conductive patterns 6 and 7 are in the form of gear engagement. It should be noted that the gear engagement described herein is not limited to a regular gear, but also encompasses various arrangements of teeth that are engaged, or meshed with each other.
Fig. 3 is a schematic structural diagram of another preferred capacitive touch panel according to an embodiment of the present invention, which is substantially the same as the structure shown in fig. 2, except that the shape of each sub-pattern in each transparent conductive pattern is the same and is a rectangle.
The utility model provides a capacitive touch pad is on the substrate base plate through a mask composition technology, once mask forms a plurality of transparent conducting pattern promptly. The one-time mask patterning process includes, but is not limited to, the following steps: photoresist coating, exposure, development, etching and stripping.
The utility model also provides a display device, including above capacitanc touch pad.
Preferably, the display device further comprises a display panel, the capacitive touch pad is in signal connection with the display panel, and the capacitive touch pad transmits the acquired touch signal to the display panel. The display panel may be any type of display panel, for example, liquid crystal, electroluminescence, electrophoresis, or the like. The substrate in the capacitive touch panel, which constitutes the display device together with the display panel, may be a single glass substrate. Or,
preferably, the display device further comprises a Thin Film Transistor (TFT) array substrate, and the capacitive touch panel and the TFT array substrate are aligned to form the display device. The substrate in the capacitive touch panel, which forms the display device together with the thin film transistor array substrate, is an opposite substrate of the thin film transistor array substrate, and the opposite substrate may be a Color Film (CF) substrate or a separate glass substrate (in this case, a color film layer is formed on the thin film transistor array substrate). In this case, the display device may be of any type, for example, when the display device is a liquid crystal display device, the liquid crystal layer is further included between the capacitive touch panel and the tft array substrate; when the display device is an electroluminescent display device, an electroluminescent layer is also arranged between the thin film transistor array substrate and the capacitive touch panel; of course, the display device may be other types of display devices, and is not limited to the above two types.
The utility model provides a transparent conductive pattern among capacitive touch pad is integrated into one piece, just can prepare the completion through a mask composition technology (mask), compares with current bridge type capacitive touch pad, has and saves the mask, need not the equipment transformation (for example do not increase sensing line figure and IC pin figure), low in manufacturing cost, production efficiency is high, advantages such as yields height.
In this embodiment, the meaning of the "composition process" covers all process forms capable of forming a desired pattern, including not only the mask technology in the conventional composition process of the display substrate, such as the processes of photoresist coating, developing, etching, stripping, etc., but also other types of processes such as the printing technology, and in this embodiment, the process capable of forming a desired transparent conductive pattern is included in the protection scope of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (12)
1. A capacitive touch pad, comprising: the touch screen comprises a substrate base plate, wherein the substrate base plate comprises a plurality of transparent conductive patterns which have no overlapped area and have a touch signal transmission function, and each transparent conductive pattern is an integrally molded pattern formed by materials of the same layer.
2. The capacitive touch pad of claim 1, wherein each transparent conductive pattern is an integrally formed pattern formed from the same layer of material by a single mask patterning process.
3. The capacitive touch pad of claim 1, wherein adjacent edge lines of at least one pair of adjacent transparent conductive patterns in the plurality of transparent conductive patterns are parallel.
4. The capacitive touch pad of claim 1, wherein the plurality of transparent conductive patterns are arranged in parallel in a first direction on the capacitive touch pad.
5. The capacitive touch pad of claim 1, wherein edges of two adjacent transparent conductive patterns are in the form of gear engagement.
6. The capacitive touch pad of claim 1, wherein the transparent conductive patterns are identical in shape.
7. The capacitive touch pad of claim 1, wherein the plurality of transparent conductive patterns transmit the touch signal through sensor lines respectively arranged at two side edge regions of the capacitive touch pad.
8. The capacitive touch pad of any one of claims 1 to 7, wherein each transparent conductive pattern comprises a plurality of interconnected sub-patterns, the edge line shape of the sub-patterns comprising one or more of a polygon, a zigzag, an arc, a wave and an irregular line.
9. The capacitive touch pad of claim 8, wherein the area size of each sub-pattern in each transparent conductive pattern is not equal.
10. A display device characterized by comprising the capacitive touch panel according to any one of claims 1 to 9.
11. The display device according to claim 10, further comprising a display panel, wherein the capacitive touch pad is in signal connection with the display panel, and the capacitive touch pad transmits the acquired touch signal to the display panel.
12. The display device according to claim 10, further comprising a thin film transistor array substrate, wherein the capacitive touch panel and the thin film transistor array substrate are paired to form the display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320217383 CN203260022U (en) | 2013-04-25 | 2013-04-25 | Capacitive touchpad and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320217383 CN203260022U (en) | 2013-04-25 | 2013-04-25 | Capacitive touchpad and display device |
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| Publication Number | Publication Date |
|---|---|
| CN203260022U true CN203260022U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320217383 Expired - Fee Related CN203260022U (en) | 2013-04-25 | 2013-04-25 | Capacitive touchpad and display device |
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| Country | Link |
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| CN (1) | CN203260022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015188475A1 (en) * | 2014-06-11 | 2015-12-17 | 京东方科技集团股份有限公司 | Tactile feedback system, tactile feedback method, and touch display device |
-
2013
- 2013-04-25 CN CN 201320217383 patent/CN203260022U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015188475A1 (en) * | 2014-06-11 | 2015-12-17 | 京东方科技集团股份有限公司 | Tactile feedback system, tactile feedback method, and touch display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150629 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150629 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150629 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20210425 |