CN202394196U - Touch control sensing device and electronic device - Google Patents
Touch control sensing device and electronic device Download PDFInfo
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- CN202394196U CN202394196U CN2011203651487U CN201120365148U CN202394196U CN 202394196 U CN202394196 U CN 202394196U CN 2011203651487 U CN2011203651487 U CN 2011203651487U CN 201120365148 U CN201120365148 U CN 201120365148U CN 202394196 U CN202394196 U CN 202394196U
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- touch control
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Abstract
The utility model provides a touch control sensing device. The touch control sensing device comprises a touch control sensing circuit layer arranged on the lower surface of a substrate, and a shielding structure arranged below the touch control sensing circuit layer, wherein the shielding structure comprises a conducting layer and a plate carrying layer. The utility model further discloses an electronic device with the touch control sensing device. The touch control sensing device provided by the utility model can prevent from inadequate generation of background capacitance when a shielding function is provided, so that the touch control sensitivity of the touch control sensing device can be prevented from being reduced or invalid.
Description
Technical field
The utility model relates to a kind of input media, particularly a kind of touch sensing device and the electronic installation of using said touch sensing device.
Background technology
The function of touch sensing device is that the user can the completion data transmission through the function of finger or pointer (stylus) execution input.Generally speaking, touch sensing device can be divided into resistance-type, condenser type, sound wave (acoustic wave) formula according to method for sensing, reach the optical touch control sensing apparatus.
Fig. 1 shows the diagrammatic cross-section that convention has the touch sensing device 10 of single glass.Touch sensing device 10 comprises: a substrate 100 has a upper surface 100a and a lower surface 100b.One touch control sensing circuit layer 102 is arranged at the upper surface 100a of substrate 100.Therefore the interference of (for example, display device or other equipment of periphery) noise is gone up in the lower surface 100b of substrate 100 and is covered a conductive layer 104, to carry out the noise protection because touch sensing device 10 can be come from the outside.
Yet; Touch control sensing circuit layer 102 and conductive layer 104 all adopt paint-on techniques such as thin film deposition, little shadow, etching, sputter or printing directly to be made in the upper surface 100a and the lower surface 100b of substrate 100 usually; Therefore in touch sensing device 10; Conductive layer 104 can cause touch sensing device 10 touch-control sensitivitys to reduce or inefficacy because of forming very big background capacitance (background capacitance) apart from the too near between of touch control sensing circuit layer 102.
Therefore, be necessary to seek a kind of new touch sensing device structure, make it can improve or avoid above-mentioned problem.
The utility model content
In order to solve the above problems, the utility model has adopted a kind of shielding construction to be used to avoid the generation of background capacitance.According to above-mentioned purpose, the utility model one embodiment provide a kind of touch sensing device, comprising: a touch control sensing circuit layer is arranged on the lower surface of a substrate; And a shielding construction, being arranged at said touch control sensing circuit layer below, wherein said shielding construction comprises a conductive layer and a carrier plate layer.
The utility model another embodiment provide a kind of touch sensing device, comprising: a touch control sensing circuit layer; And a shielding construction, comprising a conductive layer and a carrier plate layer, wherein said carrier plate layer has the thickness of an anti-background capacitance to form a personal distance between said touch control sensing circuit layer and said conductive layer.
The utility model another embodiment provide a kind of electronic installation, comprising: a display device; And a touch sensing device, be arranged on the display device, and with its electric property coupling.Touch sensing device comprises: a touch control sensing circuit layer is arranged on the lower surface of a substrate; And a shielding construction, being arranged at said touch control sensing circuit layer below and being arranged at the homonymy of said substrate with said touch control sensing circuit layer, wherein said shielding construction comprises a conductive layer and a carrier plate layer.
The touch sensing device of the utility model when function of shielding is provided, can prevent the generation of unsuitable background capacitance owing to have above-mentioned shielding construction, and then prevents that the touch-control sensitivity of touch sensing device from reducing or inefficacy.
Description of drawings
Below in conjunction with embodiment and accompanying drawing, the utility model is done further explain.
Fig. 1 is for being used for convention touch sensing device diagrammatic cross-section.
Fig. 2 is the touch sensing device diagrammatic cross-section according to the utility model one embodiment.
Fig. 3 is the touch sensing device diagrammatic cross-section according to another embodiment of the utility model.
Fig. 4 is the touch sensing device diagrammatic cross-section according to another embodiment of the utility model.
Fig. 5 is the electronic installation block schematic diagram with touch sensing device according to the utility model one embodiment.
Embodiment
Have the knack of under the utility model as one of technical field art and can further understand the utility model for making; The hereinafter spy enumerates several preferred embodiments of the utility model; And cooperating appended graphicly, the effect reached is desired by constitution content and the institute that specifies the utility model.
Please with reference to Fig. 2, it shows the touch sensing device diagrammatic cross-section according to the utility model one embodiment.Touch sensing device 20 comprises a substrate 200, a touch control sensing circuit layer 207 and a shielding construction 215.In the present embodiment, substrate 200 is as a loam cake fender.Substrate 200 has a upper surface 200a and with respect to a lower surface 200b of upper surface 200a, wherein upper surface 200a is as a touch face, in order to provide the user with directly touching such as finger, pointer or stylus.Touch control sensing circuit layer 207 is arranged on the lower surface 200b of substrate 200, and shielding construction 215 is arranged on the touch control sensing circuit layer 207, and is arranged at the homonymy of substrate 200 with touch control sensing circuit layer 207.Shielding construction 215 also comprises a carrier plate layer 212 and a conductive layer 214.In one embodiment, substrate 200 can comprise transparent material, for example: glass, quartz or other elasticity or non-resilient macromolecule transparent material.In other embodiments, substrate 200 also can comprise non-transparent material.
Touch control sensing circuit layer 207 is arranged on the lower surface 200b of substrate 200.In different embodiment, touch control sensing circuit layer 207 can be designed to the touch control sensing circuit of different sensing modes, for example resistance-type, condenser type, sound wave type and optical profile type etc.In the present embodiment, be example with the capacitance touching control sensing circuit, touch control sensing circuit layer 207 can be by processing procedures such as thin film deposition, little shadow and etchings and is formed on the lower surface 200b of substrate 200.Touch control sensing circuit layer 207 can comprise: a conductive layer 202, a capacitance dielectric layer 204 and a sensing electrode layer 206.Conductive layer 202 can be made up of conductive layer, metal level or other conductive materials of haveing the knack of of a patterning, and it can separate with substrate 200 via an insulation course (not illustrating), and here for simplicity of illustration, conductive layer 202 is only represented it with a levelling blanket.
Capacitance dielectric layer 204 is arranged on the conductive layer 202.In one embodiment, capacitance dielectric layer 204 can be an individual layer, for example, and one silica layer, a silicon nitride layer or other transparent insulation macromolecule layers.In other embodiments, capacitance dielectric layer 204 can be sandwich construction, for example, and the silicon oxide layer that stacks, silicon nitride layer or other transparent insulation macromolecule layer or its combination.
Sensing electrode layer 206 is arranged on the capacitance dielectric layer 204, and capacitance dielectric layer 204 is located between conductive layer 202 and the sensing electrode layer 206.When finger or pointer contact touch face, finger on sensing electrode layer 206 and the touch face or pointer constitute two capacitance electrodes of a sense capacitance.Sensing electrode layer 206 can comprise a plurality of sensing electrodes.Sensing electrode is arranged along two different directions respectively, and the sensing electrode of one of them direction sees through conductive layer 202 connections.Sensing electrode can see through little shadow and etch process and come the same transparency conducting layer of patterning (for example, tin indium oxide (ITO) or indium zinc oxide (indium zinc oxide, IZO) layer) or opaque conductive layer (for example, metal level) and form.For simplicity of illustration, sensing electrode layer 206 is equally only represented it with a levelling blanket here.
In other embodiments, touch control sensing circuit layer 207 can comprise one first sensing electrode layer, a capacitance dielectric layer and one second sensing electrode layer.The first sensing electrode layer comprises a plurality of first sensing electrodes that distribute along first direction, and the second sensing electrode layer comprises a plurality of second sensing electrodes that distribute along second direction, and capacitance dielectric layer is located between the first sensing electrode layer and the second sensing electrode layer.
In the foregoing description, the shape of sensing electrode can be the combination of random geometry or shape.
The touch sensing device 20 that the utility model provides also comprises a glue-line 210, is located between touch control sensing circuit layer 207 and this shielding construction 215.Wherein, glue-line 210 is that (optically clear adhesives OCA), can comprise acrylic acid (acrylic) resin to an optical cement.The thickness of glue-line 210 is 0.03 millimeter to 1.0 millimeters scope.
In one embodiment, as shown in Figure 2, carrier plate layer 212 is located between glue-line 210 and the conductive layer 214, and carrier plate layer 212 combines with glue-line 210, and the thickness that forms an anti-background capacitance jointly is 0.03 millimeter to 3.0 millimeters scope.In another embodiment, as shown in Figure 3, conductive layer 214 is located between glue-line 210 and the carrier plate layer 212.
In the present embodiment; Specifically see through the thickness of adjustment carrier plate layer 212 and/or the thickness of glue-line 210; Can avoid or eliminate forming unsuitable background capacitance between conductive layer 214 and the touch control sensing circuit layer 207 in the shielding construction 215, and then prevent that touch sensing device 20 touch-control sensitivitys from reducing or lost efficacy.
According to the foregoing description; Because touch sensing device 20 adopts single substrates 200 touch face to be provided simultaneously and the surface of touch control sensing circuit layer 207 is set; Therefore compared to the convention touch sensing device that cover glass just can be operated on need be provided again; Can omit cover glass, with effective reduction device thickness and reduction manufacturing cost.Moreover; The noise that is used for that adopts shielding construction 215 to replace the lower surface 100b that directly is covered in substrate 100 in convention touch sensing device 10 (as shown in Figure 1) protects conductive layer 104; When can further simplifying processing procedure, also can prevent the generation of unsuitable background capacitance, the touch sensing device that therefore has single glass compared to convention; The touch-control sensitivity that can prevent touch sensing device reduces or inefficacy, and then improves the quality of touch sensing device.In addition; Because shielding construction 215 directly is not covered in substrate 200 or touch control sensing circuit layer 207; Be attached on the touch control sensing circuit layer 207 but see through glue-line 210; If glue-line 210 is to select for repeated adhesion optical cement for use, then can adjust the thickness of carrier plate layer 212 in glue-line 210 and/or the shielding construction 215, so that in time eliminate or weaken the background capacitance that has produced; And then touch control sensing circuit layer and conductive layer directly are made in the upper and lower surface of substrate in the solution prior art, and are not easy to adjust the problem of the thickness of substrate.
Please with reference to Fig. 4, it shows the touch sensing device diagrammatic cross-section according to another embodiment of the utility model.Touch sensing device 30 comprises a touch control sensing circuit layer 307 and a shielding construction 315.Shielding construction 315 also comprises a carrier plate layer 312 and a conductive layer 314.Carrier plate layer 312 has the thickness of an anti-background capacitance to form a personal distance between touch control sensing circuit layer 307 and this conductive layer 314, so that can not produce background capacitance between touch control sensing circuit layer 307 and the conductive layer 314.Simultaneously, in order to optimize the thickness of touch sensing device 30, personal distance can not be too big.Generally speaking, when producing minimum admissible background capacitance between touch control sensing circuit layer 307 and the conductive layer 314, corresponding personal distance is minimum safety interval; When can not produce background capacitance fully between touch control sensing circuit layer 307 and the conductive layer 314, corresponding personal distance is maximum personal distance.Usually, personal distance can be set in 0.03 millimeter to 3.0 millimeters scope.
In the present embodiment, touch sensing device 30 also comprises a substrate 300.Surperficial 300b under wherein touch control sensing circuit layer 307 can be arranged on the substrate 300, and shielding construction 315 is arranged at substrate 300 homonymies with touch control sensing circuit layer 307; Touch control sensing circuit layer 307 and shielding construction 315 also can be arranged at the both sides of substrate 300 respectively.
The structure and material of touch control sensing circuit layer 307 is with the structure and material of touch control sensing circuit layer 207 in embodiment illustrated in fig. 2.In addition, touch sensing device 30 comprises that also one has the flexible circuit board 320 of a ground mat 321, and the structure of flexible circuit board 320 and connected mode are all with the structure and the connected mode of flexible circuit board 220 in embodiment illustrated in fig. 2.
Fig. 5 shows the electronic installation block schematic diagram with touch sensing device according to another embodiment of the utility model.In the present embodiment, electronic installation 40 may be implemented in a mobile phone, a digital still camera, a notebook computer, a personal digital assistant, a desktop computer or a televisor.Electronic installation 40 comprises a touch sensing device 20 (as shown in Figure 2) and a display device 50, and wherein touch sensing device 20 is arranged on the display device 50, and with display device 50 electric property couplings.In the present embodiment, the substrate 200 in the touch sensing device 20, touch control sensing circuit layer 207, conductive layer 214 can be made up of transparent material.Moreover; Display device 50 can comprise a LCD (liquid crystal display; LCD) or an active display (light-emitting display; LED), for example plane torsion formula (in-plane switching) LCD or OLED (organic light-emitting display, OLED).In addition, in the electronic installation 40 touch sensing device 20 also replaceable be touch sensing device 30 shown in Figure 4.
The above; Be merely the utility model preferred embodiment; So can not limit the scope of the utility model with this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (23)
1. touch sensing device comprises:
One touch control sensing circuit layer is arranged on the lower surface of a substrate; And
One shielding construction is arranged at said touch control sensing circuit layer below, and wherein said shielding construction comprises a conductive layer and a carrier plate layer.
2. touch sensing device according to claim 1 is characterized in that, carrier plate layer has the thickness of an anti-background capacitance to form a personal distance between said touch control sensing circuit layer and said conductive layer.
3. touch sensing device according to claim 2 is characterized in that, said personal distance is 0.03 millimeter to 3.0 millimeters scope.
4. touch sensing device according to claim 1 is characterized in that, also comprises a glue-line, is located between said touch control sensing circuit layer and the said shielding construction.
5. touch sensing device according to claim 4 is characterized in that, said carrier plate layer is located between said glue-line and the said conductive layer.
6. touch sensing device according to claim 4 is characterized in that, said conductive layer is located between said glue-line and the said carrier plate layer.
7. touch sensing device according to claim 4 is characterized in that, said glue-line is an optics glue-line.
8. touch sensing device according to claim 1 is characterized in that, said touch control sensing circuit layer comprises:
One conductive layer;
One sensing electrode layer; And
One capacitance dielectric layer is located between said conductive layer and the said sensing electrode layer.
9. touch sensing device according to claim 8; It is characterized in that; Said sensing electrode layer comprises a plurality of sensing electrodes, and said sensing electrode is arranged along two different directions respectively, and the said sensing electrode of one of them direction sees through said conductive layer connection.
10. touch sensing device according to claim 1 is characterized in that, said touch control sensing circuit layer comprises:
One first sensing electrode layer;
One second sensing electrode layer; And
One capacitance dielectric layer is located between said first sensing electrode layer and the said second sensing electrode layer.
11. touch sensing device according to claim 10; It is characterized in that; The said first sensing electrode layer comprises a plurality of first sensing electrodes that distribute along first direction, and the said second sensing electrode layer comprises a plurality of second sensing electrodes that distribute along second direction.
12. touch sensing device according to claim 1 is characterized in that, also comprises a flexible circuit board, is electrically connected to said conductive layer.
13. touch sensing device according to claim 12 is characterized in that, said conductive layer is electrically connected to a ground mat of said flexible circuit board via an articulamentum.
14. touch sensing device according to claim 1 is characterized in that, said carrier plate layer comprises polyethylene terephthalate or polymethylmethacrylate.
15. touch sensing device according to claim 1 is characterized in that, said carrier plate layer comprises glass.
16. touch sensing device according to claim 1 is characterized in that, the thickness of said carrier plate layer is 0.05 millimeter to 2.0 millimeters scope.
17. touch sensing device according to claim 1 is characterized in that, the thickness of said conductive layer is 0.05 millimeter to 0.3 millimeter scope.
18. touch sensing device according to claim 4 is characterized in that, the thickness of said glue-line is 0.03 millimeter to 1.0 millimeters scope.
19. an electronic installation comprises:
One display device; And
One touch sensing device is arranged on the said display device, and with said display device electric property coupling, comprising:
One touch control sensing circuit layer is arranged on the lower surface of a substrate; And
One shielding construction is arranged at said touch control sensing circuit layer below, and wherein said shielding construction comprises a conductive layer and a carrier plate layer.
20. electronic installation according to claim 19 is characterized in that, said substrate, said sensing electrode layer, said conductive layer can be made up of transparent material.
21. electronic installation according to claim 19 is characterized in that, said display device comprises a LCD or an active display.
22. a touch sensing device comprises:
One touch control sensing circuit layer; And
One shielding construction comprises a conductive layer and a carrier plate layer, and wherein said carrier plate layer has the thickness of an anti-background capacitance to form a personal distance between said touch control sensing circuit layer and said conductive layer.
23. touch sensing device according to claim 22 is characterized in that, said carrier plate layer further combines a glue-line and forms the thickness with said anti-background capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203651487U CN202394196U (en) | 2011-09-16 | 2011-09-16 | Touch control sensing device and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203651487U CN202394196U (en) | 2011-09-16 | 2011-09-16 | Touch control sensing device and electronic device |
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| Publication Number | Publication Date |
|---|---|
| CN202394196U true CN202394196U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203651487U Expired - Lifetime CN202394196U (en) | 2011-09-16 | 2011-09-16 | Touch control sensing device and electronic device |
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| Country | Link |
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| CN (1) | CN202394196U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999199A (en) * | 2011-09-16 | 2013-03-27 | 宸鸿科技(厦门)有限公司 | Touch sensing device and electronic device |
| CN106445226A (en) * | 2016-08-29 | 2017-02-22 | 业成科技（成都）有限公司 | Low-cost pressure sensor fabrication method and low-cost pressure sensor structure |
| TWI581162B (en) * | 2012-09-24 | 2017-05-01 | Toppan Printing Co Ltd | Transparent conductive film, transparent conductive film manufacturing method and touch panel |
-
2011
- 2011-09-16 CN CN2011203651487U patent/CN202394196U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999199A (en) * | 2011-09-16 | 2013-03-27 | 宸鸿科技(厦门)有限公司 | Touch sensing device and electronic device |
| TWI581162B (en) * | 2012-09-24 | 2017-05-01 | Toppan Printing Co Ltd | Transparent conductive film, transparent conductive film manufacturing method and touch panel |
| CN106445226A (en) * | 2016-08-29 | 2017-02-22 | 业成科技（成都）有限公司 | Low-cost pressure sensor fabrication method and low-cost pressure sensor structure |
| CN106445226B (en) * | 2016-08-29 | 2019-09-10 | 业成科技（成都）有限公司 | Inexpensive pressure sensor production method and its structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120822 Effective date of abandoning: 20160810 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |