CN203573289U - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN203573289U CN203573289U CN201320480835.2U CN201320480835U CN203573289U CN 203573289 U CN203573289 U CN 203573289U CN 201320480835 U CN201320480835 U CN 201320480835U CN 203573289 U CN203573289 U CN 203573289U
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- layer
- electrically conducting
- transparency carrier
- touch screen
- conducting transparent
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Abstract
The utility model is applied to the field of a touch screen and provides a capacitive touch screen which comprises a first transparent substrate. One surface of the first transparent substrate is provided with a transparent conductive pattern layer prepared from organic conductive polymeric material. A second transparent substrate is adhered to the transparent conductive pattern layer. Since the transparent conductive pattern layer prepared from organic conductive polymeric material is arranged on the first transparent substrate and the second transparent substrate is adhered to the transparent conductive pattern layer, exposure of the transparent conductive pattern layer is minimized, a problem of instability of resistance of the transparent conductive pattern layer is effectively solved, and thus the transparent conductive pattern layer has good conductivity and is low in resistance fluctuation. Meanwhile, organic conductive polymeric material is utilized to prepare the transparent conductive pattern layer, so the cost is reduced and the production efficiency is improved.
Description
Technical field
The utility model belongs to touch-screen field, relates in particular to a kind of capacitive touch screen.
Background technology
Touch-screen is often attached to the outside surface that shows module (such as liquid crystal display module or organic light emitting display module), makes touch display unit.Therefore, touch-screen needs the feature of the high grade of transparency and minimal thickness.
Organic conductive polymeric material also starts for touch-screen field.Along with the development of conducting polymer technology, occurred adopting organic conductive polymkeric substance to replace traditional tin indium oxide (ITO) as the resistive touch screen of electrically conducting transparent figure layer at present.Compare with ITO, organic conductive polymkeric substance has a series of advantage, for example, more soft than ITO film, is not easy to produce minute crack, has longer serviceable life; Can directly be coated on base material, in air and there is film forming characteristics under the temperature conditions lower than ITO, there is higher volume production ability.In addition, in conjunction with touch screen base material, can prepare flexible touch screen, realize flexural deformation etc., in more areas, apply.Therefore, conducting polymer replaces ITO as touch-screen conductive material, will cause touch-screen change formula and develop.
But organic conductive polymkeric substance is promoted the use of still and had difficulties on a large scale on capacitive touch screen, this is relevant with touch-screen production technology with the characteristic of organic conductive polymkeric substance itself.Current capacitive touch screen is generally on substrate, to produce electrically conducting transparent figure layer, then directly deposits in order to postorder and uses.When making of organic conductive polymkeric substance (as materials such as polythiophenes) after the electrically conducting transparent figure layer of capacitive touch screen, directly expose while depositing, electrically conducting transparent figure layer electric conductivity be variation gradually.Also have organic conductive polymkeric substance very sensitive to alkaline environment, when the pH value of environment is 8 to 9, its resistance value generally can rise and surpass 30%, at this moment the fluctuation of resistance has surpassed the scope that product allows, therefore can to production, bring hidden danger greatly, cause product defects, even cannot use.
Utility model content
The purpose of this utility model is to provide a kind of capacitive touch screen, while being intended to solve current use organic conductive polymkeric substance making capacitive touch screen, and poor electric conductivity, the fluctuation of resistance has surpassed the problem of the scope of product permission.
The utility model is to realize like this, a kind of capacitive touch screen, comprise the first transparency carrier, a surface of described the first transparency carrier is provided with the electrically conducting transparent figure layer of being prepared by organic conductive polymeric material, on described electrically conducting transparent figure layer, is fitted with the second transparency carrier.
Further, described the second transparency carrier is Polarizer.
Further, also comprise described the second transparency carrier is pasted on to the optics glue-line on described electrically conducting transparent figure layer.
Particularly, described optical cement layer thickness is 60～80 microns.
Particularly, described optics glue-line is UV glue-line or OCA optics glue-line.
Particularly, described the first transparency carrier is PET plate, PC plate, PMMA plate or glass plate.
The electrically conducting transparent figure layer that the utility model is made by organic conducting polymer materials is set on the first transparency carrier, and second transparency carrier of fitting on electrically conducting transparent figure layer, thereby can reduce as far as possible or reduce electrically conducting transparent figure layer directly comes out, thereby prevent its electric conductivity variation when placing, also prevent that it is affected by alkaline environment simultaneously, effectively solve the unsettled problem of electrically conducting transparent figure layer resistance value, it is conducted electricity very well, resistance fluctuation is little.Meanwhile, use organic conductive polymkeric substance to make electrically conducting transparent figure layer, reduced cost, improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of capacitive touch screen of providing of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, a kind of capacitive touch screen that the utility model embodiment provides, comprises the first transparency carrier 11, is located at the lip-deep electrically conducting transparent figure of the first transparency carrier 11 1 layer 12 and fits in the transparency carrier on electrically conducting transparent figure layer 12.Electrically conducting transparent figure layer 12 is prepared from by organic conductive polymeric material.
The electrically conducting transparent figure layer 12 of making by organic conducting polymer materials is set on the first transparency carrier 11, and second transparency carrier 14 of fitting on electrically conducting transparent figure layer 12, thereby can reduce as far as possible or reduce electrically conducting transparent figure layer 12 comes out, prevent its electric conductivity variation when placing, also prevent the impact of alkaline environment on electrically conducting transparent figure layer 12 simultaneously, thereby effectively solve the unsettled problem of electrically conducting transparent figure layer 12 resistance value, guarantee the electric conductivity that it is good, resistance fluctuation is little.In addition owing to using organic conductive polymkeric substance to make electrically conducting transparent figure layer 12, and organic conductive polymkeric substance is more soft than ITO film, is not easy to produce minute crack, has longer serviceable life; Can directly be coated on base material, in air and there is film forming characteristics under the temperature conditions lower than ITO, thereby can improve the production efficiency of this capacitive touch screen, reduce costs.In addition, in conjunction with the first transparency carrier 11 and the second transparency carrier 14, can prepare flexible touch screen, realize flexural deformation etc., range of application and field can be wider.
Further, the second transparency carrier 14 is Polarizer.Because touch-screen is often attached to the outside surface that shows module (such as liquid crystal display module or organic light emitting display module), make touch display unit, and be the display effect that improves touch display unit, generally on demonstration module, Polarizer be set, to reduce reflection.And using Polarizer directly as the second transparency carrier 14, can after this capacitive touch screen is attached to shows on module outside surface, need not install again Polarizer additional, can reduce the thickness of display device, improve its display effect.Reduce the cost of display device simultaneously.
Further, also comprise optics glue-line 13, use optics glue-line 13 conveniently the second transparency carrier 14 to be pasted on electrically conducting transparent figure layer 12.When manufacturing this capacitive touch screen, can on the first transparency carrier 11, prepare electrically conducting transparent figure layer 12; On the second transparency carrier 14, be coated with optical cement, to form optics glue-line 13, then fit on electrically conducting transparent figure layer 12.Conveniently the second transparency carrier 14 is fitted on electrically conducting transparent figure layer 12.
Optics glue-line 13 thickness are generally made as 60～80 microns.Optics glue-line 13 can be UV(Ultraviolet Rays) glue-line, with UV glue, be coated with and impose on second substrate, then be affixed on electrically conducting transparent figure layer 12.Also can use OCA(Optically Clear Adhesive) optics glue-line 13, with OCA glue, be coated with and impose on second substrate, then be affixed on electrically conducting transparent figure layer 12.
Particularly, can use PET(polyethylene terephthalate) plate is as the first transparency carrier 11.Also can, with PC plate (transparent plastic sheet) as the first transparency carrier 11, can also use PMMA(polymethylmethacrylate) plate or glass plate be as the first transparency carrier 11.
The effect of capacitive touch screen of the present utility model is described below by several contrast experiments.
Experiment 1:
The first transparency carrier 11 is selected PET plate, and with organic conductive polymkeric substance, prepares electrically conducting transparent figure layer 12 on a surface of the first transparency carrier 11.
On Polarizer, use evenly applying glue of Japanese triple bond TD-1555D glue (a kind of UV glue), applying glue thickness is 60 microns.
Then use the one side on the first transparency carrier 11 with electrically conducting transparent figure layer 12 is fitted with the applying glue face of Polarizer (being about to Polarizer fits on electrically conducting transparent figure layer 12).
Experiment 2:
The first transparency carrier 11 is selected glass plate, and with organic conductive polymkeric substance, prepares electrically conducting transparent figure layer 12 on the first transparency carrier 11 1 surfaces.
Using Japanese triple bond TD-1555D glue on Polarizer, to carry out thickness is 60 microns of even applying glues.
Then use the one side on the first transparency carrier 11 with electrically conducting transparent figure layer 12 is fitted with the applying glue face of Polarizer.
Experiment 3:
The first transparency carrier 11 is selected PMMA plate, and with organic conductive polymkeric substance, has prepared electrically conducting transparent figure layer 12 on a surface of the first transparency carrier 11.
Using OCA optical cement on Polarizer, to carry out thickness is 80 microns of even applying glues.
Then use the one side on the first transparency carrier 11 with electrically conducting transparent figure layer 12 is fitted with the applying glue face of Polarizer.
Experiment 4:
The first transparency carrier 11 is selected PC plate, and with organic conductive polymkeric substance, has prepared electrically conducting transparent figure layer 12 on a surface of the first transparency carrier 11.
Using OCA optical cement on Polarizer, to carry out thickness is 80 microns of even applying glues.
Then use the one side on the first transparency carrier 11 with electrically conducting transparent figure layer 12 is fitted with the applying glue face of Polarizer.
Contrast experiment 1:
The first transparency carrier 11 is selected PET plate, and with organic conductive polymkeric substance, has prepared electrically conducting transparent figure layer 12 on a surface of the first transparency carrier 11, thereby directly forms touch-screen.
Contrast experiment 2:
The first transparency carrier 11 is selected glass plate, and with organic conductive polymkeric substance, has prepared electrically conducting transparent figure layer 12 on a surface of the first transparency carrier 11, thereby directly forms touch-screen.
Performance test:
Above-mentioned experiment 1～4 is prepared electrically conducting transparent figure layer 12 with organic conductive polymkeric substance for of the present utility model on the first transparency carrier 11, then the capacitive touch screen made of second transparency carrier 14 of fitting on electrically conducting transparent figure layer 12.
Above-mentioned contrast experiment 1～2, for to prepare after electrically conducting transparent figure layer 12 with organic conductive polymkeric substance on the first transparency carrier 11, directly makes capacitive touch screen.
Above-mentioned experiment 1～4 and contrast experiment 1～2 use material as follows:
Table 1
| ? | The first transparency carrier | Optics glue-line | The second transparency carrier |
| Experiment 1 | PET | TD-1555D glue | Polarizer |
| Experiment 2 | Glass | TD-1555D glue | Polarizer |
| Experiment 3 | PMMA | OCA | Polarizer |
| Experiment 4 | PC | OCA | Polarizer |
| Contrast experiment 1 | PET | ? | Nothing |
| Contrast experiment 2 | Glass | ? | Nothing |
Capacitive touch screen prepared by above-mentioned experiment carries out correlated performance test.Method of testing is as follows:
(1) square resistance stability test: the square resistance of measuring group screen front and back electrically conducting transparent figure layer 12 with RTS-8 type four point probe resistance meter, the square resistance of electrically conducting transparent figure layer 12 after measuring the square resistance of the above-mentioned electrically conducting transparent figure layer 12 of preparing with organic conductive polymkeric substance before making capacitive touch screen and making capacitive touch screen, and by the rate of change of the square resistance of multiple spots before and after more transparent conductive pattern layer 12 group screen, evaluate the characteristic of the resistance to environment of this electrically conducting transparent figure layer 12, evaluation criterion is as follows:
1. when the rate of change of square resistance is less than 8%: electrically conducting transparent figure layer 12 square resistance have good stability;
2. when the rate of change of square resistance is between 8% to 15%: electrically conducting transparent figure layer 12 square resistance stability are general;
3. when the rate of change of square resistance is greater than 15%: electrically conducting transparent figure layer 12 square resistance poor stability.
(2) environmental simulation: according under 25 degrees Celsius of environment, the solid space of 10 cubic metres, contains 0.5% NH3H2O(mono-hydration ammonia in air), to simulate alkaline environment.
(3) conduction stablizing effect: be 60 ℃ by the capacitive touch screen preparing being put into temperature, humidity is to place electrically conducting transparent figure layer 12 resistance value of taking out testing capacitor formula touch-screen after 240 hours in 90% climatic chamber, resistance value R1 before resistance value R2 after placement and placement contrasts (R2/R1), and evaluation criterion is as follows:
1. when ratio is less than 1.3: the conductive stability of electrically conducting transparent figure layer 12 is good;
2. when ratio is within the scope of 1.3-0.4: the conductive stability of electrically conducting transparent figure layer 12 is general;
3. when ratio is greater than 1.5: the conductive stability of electrically conducting transparent figure layer 12 is poor.
Through above-mentioned test, each test result as described in Table 2.
Table 2
| ? | Square resistance stability | Conductive stability |
| Experiment 1 | Well | Well |
| Experiment 2 | Well | Well |
| Experiment 3 | Well | Well |
| Experiment 4 | Well | Well |
| Contrast experiment 1 | Poor | Generally |
| Contrast experiment 2 | Poor | Generally |
By above performance test, can find out, with organic conductive polymkeric substance, on the first transparency carrier 11, preparing after electrically conducting transparent figure layer 12, second transparency carrier 14 of fitting on electrically conducting transparent figure layer 12 again, the resistance value stability of electrically conducting transparent figure layer 12 is significantly improved.Thereby can improve greatly the yields in capacitive touch screen process of manufacture.Polarizer directly can be integrated in this capacitive touch screen to the cost of the display device that can significantly be made by this capacitive touch screen.Preparation method's technique of this capacitive touch screen is simple, and condition is easily controlled, with low cost, low for equipment requirements, is suitable for suitability for industrialized production.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a capacitive touch screen, comprise the first transparency carrier, it is characterized in that: a surface of described the first transparency carrier is provided with the electrically conducting transparent figure layer of being prepared by organic conductive polymeric material, on described electrically conducting transparent figure layer, be fitted with the second transparency carrier, described the second transparency carrier is Polarizer, described capacitive touch screen also comprises described the second transparency carrier is pasted on to the optics glue-line on described electrically conducting transparent figure layer, and the rate of change of the square resistance of the described electrically conducting transparent figure layer of this capacitive touch screen is less than 8%.
2. capacitive touch screen as claimed in claim 1, is characterized in that: described optical cement layer thickness is 60～80 microns.
3. capacitive touch screen as claimed in claim 2, is characterized in that: described optics glue-line is UV glue-line or OCA optics glue-line.
4. capacitive touch screen as claimed in claim 1, is characterized in that: described the first transparency carrier is PET plate, PC plate, PMMA plate or glass plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480835.2U CN203573289U (en) | 2013-08-07 | 2013-08-07 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480835.2U CN203573289U (en) | 2013-08-07 | 2013-08-07 | Capacitive touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203573289U true CN203573289U (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320480835.2U Expired - Fee Related CN203573289U (en) | 2013-08-07 | 2013-08-07 | Capacitive touch screen |
Country Status (1)
| Country | Link |
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| CN (1) | CN203573289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258463A (en) * | 2020-01-10 | 2020-06-09 | 广西中沛光电科技有限公司 | Put out integrative black capacitive touch screen of screen |
-
2013
- 2013-08-07 CN CN201320480835.2U patent/CN203573289U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111258463A (en) * | 2020-01-10 | 2020-06-09 | 广西中沛光电科技有限公司 | Put out integrative black capacitive touch screen of screen |
| CN111258463B (en) * | 2020-01-10 | 2024-03-19 | 广西中沛光电科技有限公司 | Integrative black capacitive touch-sensitive screen of putting out screen |
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| 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: 20140430 Termination date: 20210807 |