CN107368228A - Capacitance type touch-control panel - Google Patents

Capacitance type touch-control panel Download PDF

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Publication number
CN107368228A
CN107368228A CN201710551359.1A CN201710551359A CN107368228A CN 107368228 A CN107368228 A CN 107368228A CN 201710551359 A CN201710551359 A CN 201710551359A CN 107368228 A CN107368228 A CN 107368228A
Authority
CN
China
Prior art keywords
sensing electrode
electrode layer
layer
control panel
capacitance type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710551359.1A
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Chinese (zh)
Inventor
陈柏林
李璟林
李炫运
叶佳锜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Interface Optoelectronics Shenzhen Co Ltd
Cheng Cheng Technology Chengdu Co Ltd
General Interface Solution Ltd
Original Assignee
Interface Optoelectronics Shenzhen Co Ltd
Cheng Cheng Technology Chengdu Co Ltd
General Interface Solution Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Interface Optoelectronics Shenzhen Co Ltd, Cheng Cheng Technology Chengdu Co Ltd, General Interface Solution Ltd filed Critical Interface Optoelectronics Shenzhen Co Ltd
Priority to CN201710551359.1A priority Critical patent/CN107368228A/en
Priority to TW106132451A priority patent/TW201907281A/en
Publication of CN107368228A publication Critical patent/CN107368228A/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

A kind of capacitance type touch-control panel, it is between the first sensing electrode layer and the second sensing electrode layer, it is provided with the first plastic substrate, the first optical cement layer and the second plastic substrate, to utilize the principle of electric capacity series connection, to reduce the larger caused influence of change in dielectric constant at different temperatures of optics glue material, cause the mutual capacitance value between the first sensing electrode layer and the second sensing electrode layer and its degree of variation significantly to be reduced, and thereby lift the touch-control sensitivity and accuracy of capacitance type touch-control panel.

Description

Capacitance type touch-control panel
Technical field
The present invention is a kind of relevant capacitance type touch-control panel, particularly relates to a kind of mutual electricity that can be prevented caused by temperature change Hold the excessive capacitance type touch-control panel that makes a variation.
Background technology
The trend of portable electronic devices causes in consumer's operation more to provide the touch control operation of larger screen in recent years Add convenient flexible.In general, touch screen can be divided into electric resistance touch-control screen and capacitance touching control screen, electric resistance touch-control Screen be by the position of user's touch-control because apply pressure between glass and electrode caused short circuit phenomenon and be subject to Sensing；Capacitance touching control screen is then that the capacitance for causing its electrode because of touching by the position of user's touch-control produces Change and sensed.And as consumer is increasingly strict for the specification of electronic product, for touch screen, it will usually uncommon Touch-control sensitivity at different temperatures is hoped all to keep the same, therefore, driving chip is right in order to more accurately judge touching signals Mutual capacitance (C under different temperaturesM, Mutual Capacitance) change requirement also will be more harsh.
In the design of current capacitance type touch-control panel, Fig. 1, a kind of GFF of main flow (Glass-Film-Film) knot refer to Structure, it has two layers of tin indium oxide (ITO) film, i.e., one layer sends (Tx) sensing electrode layer 30 and one layer of reception (Rx) sensing electricity Pole layer 40, Tx sensing electrodes layer 30 and Rx sensing electrodes layer 40 are produced in polyethylene terephthalate (PET) material On first substrate 10 and second substrate 20, outer layer sticks a piece of protective glass 60 by optical cement (OCA) layer 70 again, and Tx is sensed Between electrode layer 30 and Rx sensing electrodes layer 40, except be about with thickness 50 microns (μm) PET materials second substrate 20, Also one layer of OCA layer 50 is included, its thickness is about 100 microns；Because OCA layers 50 are essentially fluid, at different temperature can There is larger change in dielectric constant, can cause to have between Tx sensing electrodes layer 30 and Rx sensing electrodes layer 40 under different temperatures larger CMValue changes.As shown in Table 1, it is the dielectric constant of different materials at different temperatures, further according to capacitance equation C= ε * A/d, and CM=1/ (1/CPET+1/COCA), it can draw between Tx sensing electrodes layer 30 and Rx sensing electrodes layer 40 in not equality of temperature C under degreeMValue, as shown in Table 2；Wherein, ε is dielectric constant, and A is area, and d is distance, CMRepresent the He of Tx sensing electrodes layer 30 Mutual capacitance between Rx sensing electrodes layer 40, CPET represent the electric capacity of pet substrate 20, and COCA represents the electric capacity of OCA layers 50.
Table one
Table two
Temperature (DEG C) CM
40 26.36*10-3A
25 24.36*10-3A
0 22.11*10-3A
It would therefore be highly desirable to propose C caused by a kind of effectively solution temperature changeMThe problem of variation, and can fully improve existing Structure, while the method for the demand of and can lifting touch-control quality.
The content of the invention
In view of this, in view of the existing deficiencies of the prior art, its main purpose is to provide a kind of capacitance touching control to the present invention Panel, the optics glue material larger caused C of change in dielectric constant at different temperatures can be reducedMMake a variation excessive influence, from And the touch-control sensitivity of capacitance type touch-control panel and accuracy are lifted.
To achieve the above object, the present invention provides a kind of capacitance type touch-control panel, includes the first sensing electrode layer, first Plastic substrate, the first optical cement layer, the second plastic substrate and the second sensing electrode layer.For laminated layer sequence, the first modeling Matrix plate is arranged on the first sensing electrode layer, and the first optical cement layer is arranged on the first plastic substrate, and the second plastic substrate is set It is placed in the first optical cement layer, and the second sensing electrode layer is arranged in the first optical cement layer.
Specifically, capacitance type touch-control panel also includes a protective glass, and protective glass is arranged at the second sensing electrode Layer top.Preferably, capacitance type touch-control panel also includes the second optical cement layer, and the second optical cement layer is arranged at the second sensing electricity Between pole layer and protective glass.
Specifically, the first plastic substrate, the second plastic substrate and the first optical cement layer have same thickness.
Specifically, the dielectric constant of the first plastic substrate and the second plastic substrate is normal less than the dielectric of the first optical cement layer Number.
Specifically, the material of the first plastic substrate is polyethylene terephthalate (PET), makrolon (PC) base Plate, polymethyl methacrylate (PMMA) or polycyclic alkene macromolecule (COP, Cycloolefin Polymer).
Specifically, the material of the second plastic substrate is polyethylene terephthalate (PET), makrolon (PC) base Plate, polymethyl methacrylate (PMMA) or polycyclic alkene macromolecule (COP, Cycloolefin Polymer).
Specifically, the material of the first sensing electrode layer is transparent conductive material.
Specifically, the material of the second sensing electrode layer is transparent conductive material.
Specifically, capacitance type touch-control panel also includes protective layer, and protective layer is arranged under the first sensing electrode layer.
Compared to prior art, the present invention is to include first between the first sensing electrode layer and the second sensing electrode layer Plastic substrate, the first optical cement layer and the second plastic substrate, with the principle connected using electric capacity, by the C caused by temperature changeM Make a variation significant reduction, uses lifting touch-control efficiency and sensing precision.
It is beneath by specific embodiment elaborate, when the purpose of the Geng Rong Yi Liao solution present invention, technology contents, feature and its The effect of reached.
Brief description of the drawings
The sectional structure chart for the capacitance type touch-control panel that Fig. 1 is provided by prior art.
The sectional structure chart for the contact panel that Fig. 2 is provided by embodiments of the present invention.
Description of reference numerals in Fig. 1：
10 first substrates
20 second substrates
30 send sensing electrode layer
40 receive sensing electrode layer
50 optical cement layers
60 protective glass
70 optical cement layers
Description of reference numerals in Fig. 2
100 capacitance type touch-control panels
110 first plastic substrates
120 second plastic substrates
130 first sensing electrode layers
140 second sensing electrode layers
150 first optical cement layers
160 protective glass
170 second optical cement layers
180 protective layers
Embodiment
The invention discloses a kind of capacitance type touch-control panel, capacitance type touch-control panel is applied to for example display device, flat board electricity Brain, Smartphone, notebook computer, desktop computer, TV, satellite navigation, display on car, aviation display or can The various electronic installations such as formula DVD projectors are taken, and the present invention focuses principally on diaphragm type contact panel, more particularly bilayer film The structure of formula (Glass-Flim-Flim, GFF) contact panel.
Fig. 2 is refer to, illustrates the sectional structure chart for the capacitance type touch-control panel 100 that embodiments of the present invention are provided.
Capacitance type touch-control panel 100 has the first plastic substrate 110 and the second plastic substrate 120, and the first sensing electrode Layer 130 is formed under the first plastic substrate 110, and the second sensing electrode layer 140 is formed on the second plastic substrate 120. Wherein, for the first sensing electrode layer 130 to send (Tx) sensing electrode layer, the second sensing electrode layer 140 senses electricity to receive (Rx) Pole layer；Or first sensing electrode layer 130 for receive (Rx) sensing electrode layer, then the second sensing electrode layer 140 for send (Tx) Sensing electrode layer.Meanwhile first between plastic substrate 110 and the second plastic substrate 120 is given by the first optical cement layer 150 To stick together fixation, and the dielectric constant of the first plastic substrate 110 and the second plastic substrate 120 is less than the first optical cement layer 150 Dielectric constant.In addition, protective glass 160 is to stick together by the second optical cement layer 170 and be fixed on the second sensing electrode layer 140 Top；And protective layer 180 is formed at the lower section of the first sensing electrode layer 130, and protective layer 180 for example can be a rupture pressure disc (ASF).
In above-described embodiment, the material of the first plastic substrate 110 and the second plastic substrate 120 for example can be polyethylene to benzene Dicarboxylic acid esters (PET), makrolon (PC), polymethyl methacrylate (PMMA) or polycyclic alkene macromolecule (COP, CycloolefinPolymer)。
And the first sensing electrode layer 130 and the second sensing electrode layer 140 are mainly made up of transparent conductive material, example Such as, tin indium oxide (indium tin oxide, ITO), indium zinc oxide (indium zinc oxide, IZO), cadmium tin (cadmiumtin oxide, CTO), aluminum zinc oxide (aluminum zinc oxide, AZO), indium oxide zinc-tin (indium Tin zinc oxide, ITZO), tin oxide (tin oxide), zinc oxide (zinc oxide), cadmium oxide (cadmium Oxide), hafnium oxide (hafniumoxide, HfO), indium gallium zinc (indium gallium zinc oxide, InGaZnO), indium gallium zinc-magnesium (indiumgallium zinc magnesium oxide, InGaZnMgO), indium gallium Magnesium (indium gallium magnesium oxide, InGaMgO), indium gallium aluminium (indium gallium aluminum Oxide, InGaAlO), CNT (Carbon NanoTube, CNT), silver nanoparticle carbon pipe or copper CNT etc., or its His electrically conducting transparent material and metal or nonmetallic synthetic.
First optical cement layer 150 and the second optical cement layer 170 can be liquid optical cement or solid state optics glue, and it can be by purple Outer light sticks together effect to be solidified generation, at the same light transmittance it is high (>99%), therefore suitable for this type product then.With Upper material more can be different according to actual demand, is not limited herein by the present invention.
The present invention is using the principle of electric capacity series connection, and when multiple electric capacity are connected, electric capacity is more gone here and there can be smaller, and can allow the first sense Mutual capacitance (the C surveyed between the sensing electrode layer 140 of electrode layer 130 and secondM) value diminishes, and mutual capacitance at different temperatures it Variation value (Δ CM) also diminish.
The capacitance type touch-control panel 100 provided according to above-described embodiment, its first plastic substrate 110, the second plastic cement base The optical cement layer 150 of plate 120 and first has same thickness, such as 50 microns, and is directed to the first plastic substrate 110 and the second plastic cement The material of substrate 120, by present on the market exemplified by most commonly used PET film kenel, to estimate the first sensing electrode layer 130 And the second mutual capacitance (C between sensing electrode layer 140M) value and variation value (Δ CM).It refer to foregoing table one, and further basis Capacitance equation C=ε * A/d, and the C in the present embodimentM=1/ (1/CPET+1/COCA+1/CPET), the first sensing electrode can be drawn Mutual capacitance (C between the sensing electrode layer 140 of layer 130 and second at different temperaturesM) value, as shown in Table 3, its variation value (Δ CM) Less than 8.50%, compared with prior art and (refer to foregoing table two), both (CMAnd Δ CM) all there is significant reduction；Wherein, ε It is dielectric constant, A is area, and d is distance, CMRepresent the mutual electricity between the first sensing electrode layer 130 and the second sensing electrode layer 140 Hold, CPET represents the electric capacity of the first plastic substrate 110 and the second plastic substrate 120, and COCA represents the electricity of the first optical cement layer 150 Hold.
Table three
Temperature (DEG C) CM
40 22.74*10-3A
25 21.96*10-3A
0 21*10-3A
In summary, it is by the first sensing electrode layer and according to capacitance type touch-control panel provided by the present invention Between two sensing electrode layers, the first plastic substrate, the first optical cement layer and the second plastic substrate are provided with, to be connected using electric capacity It can more go here and there smaller principle, be influenceed at different temperatures caused by change in dielectric constant to reduce optical cement, and be able to the Mutual capacitance value between one sensing electrode layer and the second sensing electrode layer reduces, and the variation value caused by temperature change is also big Width reduces, and the touch-control sensitivity that can be allowed under different temperatures keeps the same；Thereby, the present invention can effectively lift capacitance type touch-control panel Touch-control sensitivity and accuracy, to obtain preferable touch-control performance, be favorably improved industrial competitiveness.
Only as described above, only the preferred embodiments of the invention, is not used for limiting the scope of implementation of the invention. Therefore i.e. all features according to described in the present patent application scope and spiritual equivalent change or modification for it, it all should be included in the present invention's In claim.

Claims (10)

1. a kind of capacitance type touch-control panel, it is characterised in that include：
One first sensing electrode layer；
One first plastic substrate, it is arranged on the first sensing electrode layer；
One first optical cement layer, it is arranged on first plastic substrate；
One second plastic substrate, it is arranged in first optical cement layer；And
One second sensing electrode layer, it is arranged in first optical cement layer.
2. capacitance type touch-control panel as claimed in claim 1, it is characterised in that also comprising protective glass, the protective glass It is arranged above the second sensing electrode layer.
3. capacitance type touch-control panel as claimed in claim 2, it is characterised in that also comprising the second optical cement layer, described second Optical cement layer is arranged between the second sensing electrode layer and the protective glass.
4. capacitance type touch-control panel as claimed in claim 1, it is characterised in that wherein described first plastic substrate, described the Two plastic substrates and first optical cement layer have same thickness.
5. capacitance type touch-control panel as claimed in claim 1, it is characterised in that wherein described first plastic substrate and described the The dielectric constant of two plastic substrates is less than the dielectric constant of first optical cement layer.
6. capacitance type touch-control panel as claimed in claim 1, it is characterised in that the material of wherein described first plastic substrate is Polyethylene terephthalate, makrolon, polymethyl methacrylate or polycyclic alkene macromolecule.
7. capacitance type touch-control panel as claimed in claim 1, it is characterised in that the material of wherein described second plastic substrate is Polyethylene terephthalate, makrolon, polymethyl methacrylate or polycyclic alkene macromolecule.
8. capacitance type touch-control panel as claimed in claim 1, it is characterised in that the material of wherein described first sensing electrode layer For transparent conductive material.
9. capacitance type touch-control panel as claimed in claim 1, it is characterised in that the material of wherein described second sensing electrode layer For transparent conductive material.
10. capacitance type touch-control panel as claimed in claim 1, it is characterised in that also set comprising protective layer, the protective layer Under the first sensing electrode layer.
CN201710551359.1A 2017-07-07 2017-07-07 Capacitance type touch-control panel Pending CN107368228A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201710551359.1A CN107368228A (en) 2017-07-07 2017-07-07 Capacitance type touch-control panel
TW106132451A TW201907281A (en) 2017-07-07 2017-09-21 Capacitive touch panel

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Application Number Priority Date Filing Date Title
CN201710551359.1A CN107368228A (en) 2017-07-07 2017-07-07 Capacitance type touch-control panel

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CN107368228A true CN107368228A (en) 2017-11-21

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108132734A (en) * 2018-01-30 2018-06-08 业成科技（成都）有限公司 Touch panel and touch device
CN111399699A (en) * 2020-05-07 2020-07-10 业成科技（成都）有限公司 Touch panel and touch device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI765531B (en) * 2021-01-14 2022-05-21 大陸商宸美（廈門）光電有限公司 Touch module

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102129335A (en) * 2010-01-18 2011-07-20 介面光电股份有限公司 Capacitive touch device structure
CN104412208A (en) * 2012-07-06 2015-03-11 富士胶片株式会社 Conductive film for touch panels, and touch panel
CN206193714U (en) * 2014-06-18 2017-05-24 松下知识产权经营株式会社 Capacitive touch panel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102129335A (en) * 2010-01-18 2011-07-20 介面光电股份有限公司 Capacitive touch device structure
CN104412208A (en) * 2012-07-06 2015-03-11 富士胶片株式会社 Conductive film for touch panels, and touch panel
CN206193714U (en) * 2014-06-18 2017-05-24 松下知识产权经营株式会社 Capacitive touch panel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108132734A (en) * 2018-01-30 2018-06-08 业成科技（成都）有限公司 Touch panel and touch device
CN108132734B (en) * 2018-01-30 2021-05-04 业成科技（成都）有限公司 Touch panel and touch device
CN111399699A (en) * 2020-05-07 2020-07-10 业成科技（成都）有限公司 Touch panel and touch device

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Publication number Publication date
TW201907281A (en) 2019-02-16

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Application publication date: 20171121