CN203376708U - Touch panel - Google Patents
Touch panel Download PDFInfo
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- CN203376708U CN203376708U CN201320444383.2U CN201320444383U CN203376708U CN 203376708 U CN203376708 U CN 203376708U CN 201320444383 U CN201320444383 U CN 201320444383U CN 203376708 U CN203376708 U CN 203376708U
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- China
- Prior art keywords
- screen layer
- contact panel
- conductive
- conductive foil
- panel according
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Abstract
The utility model discloses a touch panel. The touch panel comprises a touch sensor, a shielding layer and a plurality of conductive foils. The shielding layer is arranged on the touch sensor in an insulation mode, the conductive foils are arranged on one surface, far away from the touch sensor, of the shielding layer at intervals through anisotropic conductive adhesive, and any two of the conductive foils, the anisotropic conductive adhesive and the shielding layer are connected in series to form a signal path. The touch panel has the stable anti-jamming capability.
Description
Technical field
The utility model relates to a kind of touch technology, especially in regard to a kind of contact panel.
Background technology
Now widely used personal digital assistant, game machine, smart mobile phone, flat computer isoelectronic series turnkey are drawn together touch screen and display.Wherein because touch screen is to fit in display top, so the touch-control sensing layer in touch screen easily is subject to reducing from the electromagnetic interference (EMI) of display end the degree of accuracy of induction.
In order to strengthen the jamproof ability of touch screen, usually can cover a screen layer at the whole face of a side of the close display of touch-control sensing layer in touch screen, use and prevent that the touch-control sensing layer is subject to the electromagnetic interference (EMI) from the display end.Wherein, screen layer is connected to the earth terminal of system end by flexible circuit board (Flexible Printed Circuit, FPC), to form the path of leading off of screen layer.This electrical specification quality of leading path off will directly have influence on the shield effectiveness of screen layer, therefore when the function of test touch screen, also can test in the lump the path of leading off of screen layer at present.
The method of leading path off of existing test screen layer be provide certain frequency by test side signal to screen layer, be used for measuring the capacitance of formed coupling capacitance between screen layer and touch-control sensing layer.If measured capacitance differs from default value, judge that the electrical specification of leading path off is bad, for example: because the loose contact between flexible circuit board and screen layer causes.
Yet, because the mode of testing coupling capacitance is to belong to the AC characteristic of testing screen layer, exist blind spot while therefore testing, for example, when the abnormal change of resistance of screen layer surpasses working range greatly, existing test mode just can't be effectively and is accurately judged bad, allow screen layer may therefore can't bring into play due shield effectiveness originally, and then reduce the antijamming capability of touch screen.
The utility model content
In view of this, the utility model provides a kind of contact panel.
The utility model has disclosed a kind of contact panel, comprises a touch sensing, a screen layer and plural conductive paillon foil.Be arranged on described touch sensing to this screen layer insulation, this plural conductive paillon foil is arranged at intervals at the surface of described screen layer away from described touch sensing by an anisotropic conductive; Wherein, any two described conductive foil, described anisotropic conductive and described screen layer are concatenated into a signal path.
In embodiment, the spacing distance scope between two adjacent described conductive foil is 10-15 μ m therein.
In embodiment, the size of described conductive foil is identical therein.
In embodiment, described screen layer is made by transparent conductive material, transparent conductive material and metal or nonmetallic complex therein.
In embodiment, described conductive foil is made by metal or metal composite therein.
In embodiment, described screen layer is fenestral fabric therein.
In embodiment, described touch sensing comprises a substrate, and a sensing electrode layer therein, is formed at a surface of the contiguous described screen layer of described substrate.
In embodiment, further comprise an insulation course therein, be arranged between described sensing electrode layer and described screen layer.
In embodiment, described insulation course is colloid therein.
By this, the utility model is by the framework improvement design of contact panel, when the shielding properties of test contact panel, pick-up unit is the DC characteristic of with screen layer formation closed-loop path, directly being tested screen layer, use and effectively filter out the bad contact panel of shielding properties, allow the contact panel of producing there is stable antijamming capability.
The accompanying drawing explanation
Figure 1A is sectional view and the test mode schematic diagram thereof of a kind of contact panel in the utility model embodiment.
Figure 1B is the vertical view that shows contact panel in Figure 1A.
Fig. 2 is sectional view and the test mode schematic diagram thereof of another kind of contact panel in the utility model embodiment.
Description of reference numerals
10,20～contact panel;
12,22a, 22b, 22c～pick-up unit;
100,200～touch sensing;
1001,2001～substrate;
1001a, 1001b, 2001a, 2001b～surface;
1002,2002～sensing electrode layer;
101,201～insulation course;
102,202～screen layer;
102a, 202a～surface;
103～signal path;
104,204～anisotropic conductive;
106a, 106b, 206a, 206b, 206c～conductive foil;
11a, 11b, 21a, 21b, 21c～connecting line;
120a, 120b, 220a, 220b, 220c～pin position;
D～spacing distance.
Embodiment
The configuration of each assembly in embodiment is clear in order to explain, not in order to limit the utility model.And in embodiment, the part of reference numerals repeats, and is for the purpose of simplifying the description, not means the relevance between different embodiment.
Figure 1A is sectional view and the test mode schematic diagram thereof that shows a kind of contact panel in the utility model embodiment.Contact panel 10 can be used on the system and devices such as intelligent mobile phone, flat computer, laptop computer, is used as the user interface of system and device.The contact panel 10 of the present embodiment comprises touch sensing 100, screen layer 102 and a plurality of conductive foil 106a and 106b, and the present embodiment is with two conductive foil 106a and 106a, to describe for example.Wherein, be arranged on touch sensing 100 to screen layer 102 insulation, for shielding the interference of outer signals for touch sensing 100, for example: when contact panel 10 is applied to the said system device, screen layer 102 is shielded from the electromagnetic signal of the display of system and device or mainboard and is disturbed. Conductive foil 106a and 106b are arranged at intervals on the surperficial 102a of screen layer 102 away from touch sensing 100 by anisotropic conductive 104.Thus, conductive foil 106a, 106b, anisotropic conductive 104 and screen layer 102 are concatenated into a signal path 103, and this signal path 103 can provide the shield effectiveness of the screen layer 102 of test the present embodiment contact panel 10.
More particularly bright, touch sensing 100 further comprises substrate 1001 and sensing electrode layer 1002.The substrate 1001 of the present embodiment comprises two corresponding surperficial 1001a and 1001b, and wherein surperficial 1001a is a side of watching near the user, and sensing electrode layer 1002 is to be formed on the surperficial 1001b of substrate 1001 contiguous screen layers 102.In addition, because sensing electrode layer 1002 and screen layer 102 are all to belong to conductive material layer, therefore the contact panel 10 of the present embodiment further comprises an insulation course 101 be arranged between sensing electrode layer 1002 and screen layer 102, and sensing electrode layer 1002 and screen layer 102 are used for being electrically insulated.On processing procedure, the insulation course 101 of the present embodiment and screen layer 102 are for example directly with photolithographic processes (Photo-Lithography Process), on sensing electrode layer 1002, sequentially to form.In other embodiments, insulation course 101 can be for example colloid, and screen layer 102 is fitted by insulation course 101 and sensing electrode layer 1002.
Two conductive foil 106a of the present embodiment and the size of 106b are for example to be designed to identically, and the spacing distance d scope between two conductive foil 106a and 106b is preferably 10 μ m to 15 μ m.Certainly, the dimensions of conductive foil 106a and 106b and spacing distance d, not as limit, can adjust according to the actual design demand.
From the above, when the contact panel 10 of the present embodiment is wanted to carry out the test of shielding properties, after one pick-up unit 12 (as ohmer) is electrically connected respectively to the conductive foil 106a and 106b of contact panel 10 by connecting line 11a and 11b, pick-up unit 12 can for example first transmit a test signal (as voltage) to conductive foil 106a by connecting line 11a, and allow test signal be passed to conductive foil 106b by signal path 103, and then pass back to pick-up unit 12 by connecting line 11b again.Thus, pick-up unit 12 can calculate the electrical specification (as resistance value) that test signal produces through signal path 103, to record the DC characteristic of signal path 103.By this, be electrically connected in design the shielding properties that a judgment means (not shown) of pick-up unit 12 or electrical specification that the testing staff can calculate according to pick-up unit 12 judge screen layer 102, if wherein electrical specification is bad, can judge that the shielding properties of screen layer 102 is just relatively bad.
Supplementary notes, the described connecting line 11a of the present embodiment, 11b can be for example the wires in a flexible printed wiring board of contact panel 10.When contact panel 10 at detection-phase, conductive foil 106a and 106b are electrically connected pick-up unit 12 by connecting line 11a and 11b respectively, allow and form closed-loop path between pick-up unit 12, connecting line 11a, 11b and signal path 103, in other words, pick-up unit 12 is the electrical specifications (as loop resistance value) that detect in the lump on whole connecting line 11a, signal path 103 and this loop of connecting line 11b.When contact panel 10 is applied to system and device, the definition of pin position that connecting line 11a and 11b are corresponding (Pin Assignment) is earth terminal, and screen layer 102 is able to lead by signal path 103, connecting line 11a, 11b and earth terminal are formed the function that path provides shielding off by this.
Next, the ohmer of usining for example is described further as pick-up unit 12, supposes that between the bipod position 120a of pick- up unit 12 and 120b, detected loop resistance value is R
aB, can use formula (1) to mean:
R
aB=R
a (11a)+ R
a (11a → 106a)+ R
(106a)+ R
a(106a → 104)+ R
(104)+ R
(104 → 102)+ R
gAP (102)+ R
b (11b)+ R
b (11b → 106b)+ R
(106b)+ R
b(106b → 104)+ R
(104)+ R
(104 → 102)formula (1)
Wherein, R
a (11a)line resistance for connecting line 11a;
R
b (11b)line resistance for connecting line 11b;
R
a (11a → 106a)interface resistance for connecting line 11a electrical contact conductive foil 106a;
R
b (11b → 106b)interface resistance for connecting line 11b electrical contact conductive foil 106b;
R
(106a)face resistance for conductive foil 106a;
R
(106b)face resistance for conductive foil 106b;
R
a (106a → 104)interface resistance for conductive foil 106a electrical contact anisotropic conductive 104;
R
b (106b → 104)interface resistance for conductive foil 106b electrical contact anisotropic conductive 104;
R
(104)face resistance for anisotropic conductive 104;
R
(104 → 102)interface resistance for anisotropic conductive 104 electrical contact screen layers 102; And
R
gAP (102)for the face resistance of screen layer 102 between two conductive foil 106a and 106b.
From above-mentioned formula (1), loop resistance value (R
aB) and line resistance (R
a (11a), R
b (11b)), face resistance (R
(106a), R
(106b), R
(104), R
gAP (102)) and interface resistance (R
a (11a → 106a), R
a (106a → 104), R
(104 → 102), R
b (11b → 106b), R
b (106b → 104)) in arbitrary resistance between be that to be forward relevant.In other words, measured loop resistance value can reflect each laminated face resistance of screen layer 102, anisotropic conductive 104 and conductive foil 106a, 106b of contact panel 10 or each laminated between the formed interface resistance of contact because producing abnormal that the factor such as bad occurs.In addition, due to the normally comparatively fixing wiring of line resistance (as the wire of flexible printed wiring board), be not easy variable and resistance is less, if therefore ignore, the measured loop resistance value of pick-up unit 12 is the electrical specification in representation signal path 103.
As the content of above stated specification, the measured loop resistance value of pick-up unit 12 can carry out further automatic decision by judgment means (not icon).In one embodiment, judgment means can be for example that acquiescence has a standard resistance, when loop resistance value is less than or equal to the standard resistance, judgment means can judge that the shielding properties of the screen layer 102 of contact panel 10 meets standard, can bring into play the function of shielded signal and allow contact panel 10 have antijamming capability.Otherwise, when loop resistance value is greater than the standard resistance, can judge that the screen layer 102 of contact panel 10 may can lose the function of shielding undesired signal at any time, its reason caused can be for example contact panel 10 screen layer 102, anisotropic conductive 104 and conductive foil 106a, 106b each certain electrical contact is arranged between laminated, but loose contact, or may be also that above-mentioned each laminatedly has conductive impurity and cause loop resistance value to become large.Moreover, when loop resistance value further is an infinitely large quantity, judgment means can judge that the screen layer 102 of contact panel 10 loses the function of shielding undesired signal fully, and its reason caused can be for example that each of contact panel 10 may open circuit without any electrical contact because producing bad the appearance between laminated.
Fig. 2 is sectional view and the test mode schematic diagram thereof that shows another kind of contact panel in the utility model embodiment.In contact panel 20 in the present embodiment and the 1st figure, the framework discrepancy of the contact panel of embodiment is that the contact panel 20 of the present embodiment is to be designed with three conductive foil 206a, 206b and 206c.Three conductive foil 206a, the 206b of the present embodiment and the size of 206c are for example to be designed to identically, and the spacing distance d scope between any adjacent two conductive foil is preferably 10 μ m to 15 μ m.Certainly, the dimensions of conductive foil 206a, 206b and 206c and spacing distance d, not as limit, can adjust according to the actual design demand.In the present embodiment, screen layer 202 is arranged on touch sensing 200 by insulation course 201 with insulating, for shielding the interference of outer signals for touch sensing 200, conductive foil 206a, 206b and 206c are arranged at intervals on the surperficial 202a of screen layer 202 away from touch sensing 200 by anisotropic conductive 204.The present embodiment for convenience of description for the purpose of, the signal path that three pick- up unit 22a, 22b and 22c come respectively corresponding test three conductive foil 206a, 206b and 206c to be concatenated into anisotropic conductive 204 and screen layer 202 between any two is set simultaneously, thus, conductive foil 206a, 206b, anisotropic conductive 204 and screen layer 202 are concatenated into a signal path, and this signal path is detected by pick-up unit 22a; Conductive foil 206b, 206c, anisotropic conductive 204 and screen layer 202 are concatenated into a signal path, and this signal path is detected by pick-up unit 22b; Conductive foil 206a, 206c, anisotropic conductive 204 and screen layer 202 are concatenated into a signal path, and this signal path is detected by pick-up unit 22c.And this arbitrary signal path can provide the shield effectiveness of the screen layer 102 of test the present embodiment contact panel 10.Yet, in practical application, also can be as shown in embodiment in the 1st figure only with a pick-up unit, come timesharing to test different signal paths, at this, not by the utility model, limited.
Under the framework of the present embodiment, judgment means can be used for designing different criterions for pick- up unit 22a, 22b and three groups of measured loop resistance values of 22c.In one embodiment, must be when three groups of loop resistance values all be less than or equal to the standard class value, judgment means just can judge that the shielding properties of the screen layer 202 of contact panel 20 meets standard.In other words, when having arbitrary group of loop resistance value to be greater than the standard resistance, judgment means can judge that the screen layer 202 of contact panel 20 may can lose the function of shielding undesired signal at any time, among this, if while having arbitrary group of loop resistance value to be an infinitely large quantity, judgment means judges that the screen layer 202 of contact panel 20 loses the function that shielded signal disturbs fully.
In another embodiment, judgment means can design for judging in three groups of loop resistance values, in the situation that infinitely large quantity do not occur, as long as there are two groups of loop resistance values to be less than or equal to the standard resistance, judgment means can judge that the shielding properties of the screen layer 202 of contact panel 20 meets standard, otherwise, in the situation that other, judgment means all can judge that the shielding properties of screen layer 202 does not meet standard.
Subsidiary one carry be, in the aforementioned embodiment, screen layer 102 (202) can be for example made by transparent conductive material, the optional autoxidation indium of material tin (indium tin oxide, ITO), indium zinc oxide (indium zinc oxide, IZO), cadmium tin (cadmium tin oxide, CTO), aluminum zinc oxide (aluminum zinc oxide, AZO), indium oxide zinc-tin (indium tin zinc oxide, ITZO), tin oxide (tin oxide), zinc paste (zinc oxide), cadmium oxide (cadmium oxide), hafnia (hafnium oxide, HfO), indium oxide gallium aluminium (indium gallium aluminum oxide, InGaAlO), CNT (Carbon Nano Tube, CNT), Nano Silver (Nano Silver) etc. and above-mentioned electrically conducting transparent material and metal or nonmetallic complex group.In addition, the structure of screen layer 102 (202) can be designed to according to application demand flatness layer structure or fenestral fabric.And conductive foil 106a (206a), 106b (206b) and 206c can be for example by conductive metallic material or metal composite is made, make, material can be selected from the group of copper, silver, molybdenum aluminium molybdenum etc. and metal composite.
In sum, the utility model is by the framework improvement design of contact panel, when the shielding properties of test contact panel, pick-up unit is the DC characteristic of with screen layer formation closed-loop path, directly being tested screen layer, use and effectively filter out the bad contact panel of shielding properties, allow the contact panel of producing there is stable antijamming capability.In addition, due to contact panel of the present utility model, on framework, screen layer still can form coupling capacitance with the sensing electrode layer, so the signal that pick-up unit still can provide certain frequency by arbitrary conductive foil is to screen layer, with the AC characteristic of test screen layer.
Although the utility model discloses as above with preferred embodiment; so it is not in order to limit the utility model; any those who are familiar with this art; within not breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model when with the claim scope the person of being defined be as the criterion.
Claims (9)
1. a contact panel comprises:
One touch sensing;
One screen layer, be arranged on described touch sensing to insulation; And
The plural conductive paillon foil, be arranged at intervals at the surface of described screen layer away from described touch sensing by an anisotropic conductive;
Wherein, any two described conductive foil, described anisotropic conductive and described screen layer are concatenated into a signal path.
2. contact panel according to claim 1, is characterized in that, the spacing distance scope between two adjacent described conductive foil is 10-15 μ m.
3. contact panel according to claim 1, is characterized in that, the size of described conductive foil is identical.
4. contact panel according to claim 1, is characterized in that, described screen layer is made by transparent conductive material, transparent conductive material and metal or nonmetallic complex.
5. contact panel according to claim 1, is characterized in that, described conductive foil is made by metal or metal composite.
6. contact panel according to claim 1, is characterized in that, described screen layer is fenestral fabric.
7. contact panel according to claim 1, is characterized in that, described touch sensing comprises:
One substrate; And
One sensing electrode layer, be formed at the surface that described substrate is close to described screen layer.
8. contact panel according to claim 7, is characterized in that, further comprises an insulation course, is arranged between described sensing electrode layer and described screen layer.
9. contact panel according to claim 8, is characterized in that, described insulation course is colloid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444383.2U CN203376708U (en) | 2013-07-24 | 2013-07-24 | Touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444383.2U CN203376708U (en) | 2013-07-24 | 2013-07-24 | Touch panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376708U true CN203376708U (en) | 2014-01-01 |
Family
ID=49839229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320444383.2U Expired - Fee Related CN203376708U (en) | 2013-07-24 | 2013-07-24 | Touch panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203376708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345926A (en) * | 2013-07-24 | 2015-02-11 | 宸鸿科技(厦门)有限公司 | Touch panel and testing method thereof |
-
2013
- 2013-07-24 CN CN201320444383.2U patent/CN203376708U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345926A (en) * | 2013-07-24 | 2015-02-11 | 宸鸿科技(厦门)有限公司 | Touch panel and testing method thereof |
| CN104345926B (en) * | 2013-07-24 | 2018-08-07 | 宸鸿科技(厦门)有限公司 | Touch panel and its test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140101 Termination date: 20210724 |