CN113608640A - Mutual capacitance type touch screen - Google Patents
Mutual capacitance type touch screen Download PDFInfo
- Publication number
- CN113608640A CN113608640A CN202111167916.2A CN202111167916A CN113608640A CN 113608640 A CN113608640 A CN 113608640A CN 202111167916 A CN202111167916 A CN 202111167916A CN 113608640 A CN113608640 A CN 113608640A
- Authority
- CN
- China
- Prior art keywords
- layer
- touch screen
- glass layer
- mutual capacitance
- bottom driving
- 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
Links
Images
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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
Abstract
The invention provides a mutual-capacitive touch screen, which is different from the structure of a traditional glass cover plate attaching sensor, and mainly comprises the following components in structure: the touch screen comprises a top sensing glass layer, a laminating layer and a bottom driving glass layer, wherein the top sensing glass layer and the bottom driving glass layer are fixedly bonded into a whole through the laminating layer to form a mutual-capacitance touch screen structure. The mutual capacitance touch screen provided by the invention can greatly enhance the ESD resistance, so that the product can meet the ESD requirement of 25-30 kv. Compared with the prior art, the invention has the beneficial effects that: through the design change of the scheme, the original single-layer bridging scheme is changed into the scheme of wiring the upper layer and the lower layer respectively, and weak links of the bridging are avoided, so that the ESD resistance is improved, and the high-ESD requirements of vehicle-mounted industrial control are met; meanwhile, the scheme of separately processing the two layers has the advantages of optimized working procedure, simple process, greatly improved yield and greatly reduced product cost.
Description
Technical Field
The invention relates to the field of touch screen manufacturing, in particular to a mutual capacitance type touch screen.
Background
With the development of touch technology, the application range of touch screens is wider and wider, and the touch screens are gradually pushed to large and high-requirement products such as vehicle-mounted industrial control products from common civil consumer products similar to small touch devices of mobile phones.
As a conventional mobile phone and consumer product, the replacement period is short, and the requirements on details such as some ESD (Electro-static discharge) protection are not high, but for vehicle-mounted and industrial control products with a longer replacement period, the requirements on reliability are further improved due to the particularity of the use occasion and the use time of the vehicle-mounted and industrial control products, wherein the requirements on ESD protection are obviously improved compared with the requirements on mobile phones.
The ESD requirements of the conventional mobile phones generally meet the air discharge of 15KV, namely the basic use requirements can be met; the requirements of vehicle-mounted products are more severe, individual requirements reach 25-30 KV, and the performance requirements of the products cannot be obviously met according to the design scheme of mobile phone consumer products.
On the present high-end on-vehicle project, for realizing certain visual effect, the glass structure has been adopted to the great part, and glass apron cooperation whole car design requirement, certain visual effect is realized to printing ink, and glass Sensor is the core part of Touch-control function, and both are in the same place through the laminating of optical cement, form a simple Touch Panel.
The conventionally designed vehicle-mounted Glass Sensor is generally a bridging process, and is used as a driving layer TX and a sensing layer RX of a mutual capacitance scheme, and the driving layer TX and the sensing layer RX are independent and can not be conducted. In order to realize two layers of routing on a single layer and realize mutual compatibility of a better scheme, a product design graph is generally designed into a diamond shape, RX and TX are designed to be perpendicular to each other, a middle cross-connecting part is arranged, an RX layer is conducted, a TX layer is disconnected, the disconnected part is used for conducting, insulating ink is printed firstly, then a layer of conductive material is printed on the insulating ink and conducted up and down, so that the whole channel is conducted, and a bridge and a conductive ink part are designed to have certain regularity, so that a regular dot matrix graph can be seen after an array is designed and the appearance of the product is influenced, therefore, the size of the bridge part is designed to be smaller, and if the size is larger, the whole visual effect is influenced, but the small-size design has the problem that the bridge part is broken down by high voltage to cause functional failure under the condition of high ESD (electro-static discharge) easily occurs, meanwhile, the design and processing have more processes and high difficulty, so that the yield is low and the cost of the product is relatively high.
Disclosure of Invention
In order to solve the above problems, the present invention provides a mutual capacitance type capacitive touch screen with a completely new structure, which is different from the structure of the traditional glass cover plate attaching sensor, and the structure mainly comprises: the touch screen comprises a top sensing glass layer, a laminating layer and a bottom driving glass layer, wherein the top sensing glass layer and the bottom driving glass layer are fixedly bonded into a whole through the laminating layer to form a mutual-capacitance touch screen structure.
The top induction glass layer (5) is a point touch panel of the touch screen, is a contact surface touched by a user, and is also internally provided with an upper circuit part of the touch screen, and the circuit is generally combined with wiring by silver paste printing or yellow light process matching ITO etching.
The bottom driving glass layer is a conductive circuit board of the touch screen and used for wiring a circuit, a lower circuit part of the touch screen is arranged in the bottom driving glass layer, and the circuit is generally wired by silver paste printing or yellow light technology matched with ITO etching.
The touch screen is characterized in that a conduction induction layer RX is designed on a non-contact surface (namely, a surface in contact with the bonding layer) of the top induction glass layer, a conduction driving layer TX is designed on an upper surface (namely, a surface in contact with the bonding layer) of the bottom driving glass layer, an upper circuit part in the top induction glass layer and a lower circuit part in the bottom driving glass layer are matched and mutually compatible, and the scheme of the touch screen is realized.
In general, in order to meet certain strength requirements, the material of the top induction glass layer (5) can be one of soda-lime glass and aluminosilicate glass, and the thickness of the top induction glass layer is generally not less than 0.7 mm. The non-contact surface (namely the surface in contact with the bonding layer) of the top sensing glass layer (5) can form a certain window area and a certain BM area through silk-screen printing ink according to design appearance requirements.
In order to meet certain viscosity, optical requirements and reliability requirements, the attaching material of the attaching layer is selected from one of OCA or water gel.
The material of the bottom driving glass layer can be selected from one of ITO FILM or ITO glass, and the thickness of the bottom driving glass layer is smaller than that of the top sensing glass layer.
In general, the shape of the conduction sensing layer RX is an arbitrary figure, and the design thereof is not limited. Preferably, the conductive sensing layer RX is diamond-shaped or strip-shaped. Also, the shape of the on driving layer TX is an arbitrary figure, and the design scheme thereof is not limited. Preferably, the conductive driving layer TX has a diamond shape or a strip shape. And, the conductive sensing layer RX and the conductive driving layer TX are matched with each other and correspond to each other one by one.
According to the mutual capacitance touch screen provided by the invention, the bridging process is ingeniously avoided through the laminated relation on two layers of media, the top sensing glass layer and the bottom driving glass layer are independent respectively, after the bridging process is removed, the scheme design is flexible, the designed part with the thinnest pattern can reach multiple times of the design of a bridge point at the minimum, so that the ESD resistance is greatly enhanced, and the product can meet the ESD requirement of 25-30 kv. Compared with the prior art, the invention has the beneficial effects that: through the design change of the scheme, the original single-layer bridging scheme is changed into the scheme of wiring the upper layer and the lower layer respectively, and weak links of the bridging are avoided, so that the ESD resistance is improved, and the high-ESD requirements of vehicle-mounted industrial control are met; meanwhile, the scheme of separately processing the two layers has the advantages of optimized working procedure, simple process, greatly improved yield and greatly reduced product cost.
Drawings
Fig. 1 is a schematic structural diagram of a mutual-capacitive touch screen provided by the present invention;
fig. 2 is a schematic structural diagram of a corresponding relationship between a top sensing glass layer and a bottom driving glass layer provided by the present invention after a conductive sensing layer RX and a conductive driving layer TX are respectively laid thereon;
FIG. 3 is a schematic structural diagram of a mutual capacitance touch screen manufactured by a bridging process according to the prior art;
in the figure: 1-top induction glass layer, 2-laminating layer, 3-bottom driving glass layer, 4-conduction induction layer RX, 5-conduction driving layer TX, 6-induction layer RX, 7-driving layer TX, 8-insulating ink layer and 9-conductive material.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment provides a mutual capacitance type capacitive touch screen with a brand new structure, which mainly comprises: the touch screen comprises a top sensing glass layer 1, a laminating layer 2 and a bottom driving glass layer 3, wherein the top sensing glass layer 1 and the bottom driving glass layer 3 are fixedly bonded into a whole through the laminating layer 2 to form a mutual-capacitance touch screen structure.
The top induction glass layer (5) is a point touch panel of the touch screen, is a contact surface touched by a user, and is also internally provided with an upper circuit part of the touch screen, and the circuit is generally combined with wiring by silver paste printing or yellow light process matching ITO etching.
The bottom driving glass layer 3 is a conductive circuit board of the touch screen and is used for wiring a circuit, a lower circuit part of the touch screen is arranged in the bottom driving glass layer, and the circuit is generally wired by silver paste printing or yellow light technology matched with ITO etching.
The touch screen comprises a top sensing glass layer 1 and a bottom sensing glass layer 3, wherein a non-contact surface (namely a surface in contact with a laminating layer 2) of the top sensing glass layer 1 is provided with a conduction sensing layer RX4, an upper surface (namely a surface in contact with the laminating layer 2) of the bottom sensing glass layer 3 is provided with a conduction driving layer TX5, an upper circuit part in the top sensing glass layer 1 and a lower circuit part in the bottom sensing glass layer 3 are matched and mutually compatible, and the scheme of the touch screen is realized.
In order to meet certain strength requirements, the material of the top induction glass layer (5) can be one of soda-lime glass and aluminosilicate glass, and the thickness of the top induction glass layer is generally not less than 0.7 mm. The non-contact surface (namely the surface in contact with the laminating layer 2) of the top sensing glass layer (5) can form a certain window area and a certain BM area through silk-screen printing ink according to design appearance requirements.
In order to meet certain viscosity, optical requirements and reliability requirements, the bonding material of the bonding layer 2 is selected from one of OCA or water gel.
The material of the bottom driving glass layer 3 can be selected from one of ITO FILM or ITO glass, and the thickness of the bottom driving glass layer is smaller than that of the top sensing glass layer 1.
In general, the shape of the conduction sensing layer RX4 is any pattern, and the design thereof is not limited. Preferably, the conductive sensing layer RX4 is in the shape of a diamond or a strip. Also, the shape of the on driving layer TX5 is any pattern, and the design thereof is not limited. Preferably, the shape of the on driving layer TX5 is a diamond or a bar. And, the conductive sensing layer RX4 and the conductive driving layer TX5 are matched with each other and correspond to each other one by one.
The product provided by the invention can enhance the ESD resistance, and the design scheme is a main influence factor;
a conventional bridging scheme is shown in fig. 3, and is implemented on a layer of glass, in order to implement a better visual effect, the insulating ink 8 and the conductive material (9) need to be made as small as possible on the premise of meeting the process requirements, and the width is generally not greater than 0.1mm, which leads to the increase of cost and yield; at the same time, the smaller conductive material (9), which is the very weak point under ESD, is easily broken down by high ESD, resulting in product failure.
The design scheme provided by the invention is as shown in fig. 1-2, the bridging process is ingeniously avoided on two layers through the lamination relationship, the upper layer pattern is designed on the top sensing glass layer 1, the lower layer pattern is designed on the bottom driving glass layer 3, the two layers are independent, after the bridging process is removed, the scheme design is flexible, the designed pattern is the finest part, and the smallest part can reach several times of the design of a bridge point, so that the ESD resistance is greatly enhanced, and the product can meet the ESD requirement of 25-30 kv.
Therefore, compared with the prior art, the invention has the following beneficial effects: through the design change of the scheme, the original single-layer bridging scheme is changed into the scheme of wiring the upper layer and the lower layer respectively, and weak links of the bridging are avoided, so that the ESD resistance is improved, and the high-ESD requirements of vehicle-mounted industrial control are met; meanwhile, the scheme of separately processing the two layers has the advantages of optimized working procedure, simple process, greatly improved yield and greatly reduced product cost.
The above-mentioned embodiments are described in more detail, but the invention is not to be construed as being limited to the scope of the invention. It should be noted that, for those skilled in the relevant art, various changes and modifications can be made without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (11)
1. A mutual capacitance touch screen is characterized in that the touch screen comprises a top sensing glass layer (1), a laminating layer (2) and a bottom driving glass layer (3), wherein the top induction glass layer (1) is a point touch panel of the touch screen, an upper circuit part of the touch screen is arranged in the point touch panel, the bottom driving glass layer (3) is a conductive circuit board of the touch screen, the lower circuit part of the touch screen is arranged in the touch screen, the laminating layer (2) is used for bonding the top sensing glass layer (1) and the bottom driving glass layer (3), a conduction induction layer RX (4) is designed on the non-contact surface of the top induction glass layer (1), the upper surface of the bottom driving glass layer (3) is provided with a conduction driving layer TX (5), the upper circuit part in the top sensing glass layer (1) and the lower circuit part in the bottom driving glass layer (3) are matched and compatible with each other.
2. The mutual capacitance touch screen according to claim 1, wherein the material of the top sensing glass layer (1) is selected from one of soda lime glass or aluminosilicate glass.
3. The mutual capacitance touch screen according to claim 1, wherein the top sensing glass layer (1) is provided with a window area and a BM area.
4. A mutually capacitive touch screen according to claim 1, wherein the thickness of the top sensing glass layer (1) is not less than 0.7 mm.
5. The mutual-capacitive touch screen according to claim 1, wherein the adhesive material of the adhesive layer (2) is selected from one of OCA and water gel.
6. The mutual capacitance touch screen according to claim 1, wherein the material of the bottom driving glass layer (3) is selected from one of ITO FILM or ITO glass.
7. The mutual capacitance touch screen according to claim 1, wherein the thickness of the bottom driving glass layer (3) is smaller than the thickness of the top sensing glass layer (1).
8. The mutual capacitance touch screen according to claim 1, wherein the wiring process of the upper circuit in the top sensing glass layer (1) and the lower circuit in the bottom driving glass layer (3) is silver paste printing or yellow light process combined with ITO etching.
9. The mutual capacitance touch screen according to claim 1, wherein the conductive sensing layer RX (4) is in an arbitrary shape.
10. The mutual capacitance touch screen according to claim 1, wherein the conductive driving layer TX (5) is in any shape.
11. The mutual capacitance touch screen according to claim 1, wherein the conductive sensing layer RX (4) and the conductive driving layer TX (5) are matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111167916.2A CN113608640A (en) | 2021-10-08 | 2021-10-08 | Mutual capacitance type touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111167916.2A CN113608640A (en) | 2021-10-08 | 2021-10-08 | Mutual capacitance type touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113608640A true CN113608640A (en) | 2021-11-05 |
Family
ID=78310701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111167916.2A Pending CN113608640A (en) | 2021-10-08 | 2021-10-08 | Mutual capacitance type touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113608640A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173142A (en) * | 2011-12-20 | 2013-06-26 | 日东电工株式会社 | Optical pressure-sensitive adhesive sheet |
| US20150199057A1 (en) * | 2010-09-28 | 2015-07-16 | Japan Display Inc. | Display device with touch detection function and electronic unit |
| CN106227394A (en) * | 2016-07-26 | 2016-12-14 | 精电(河源)显示技术有限公司 | A kind of recessive cover plate touch screen and production method thereof |
| CN106775169A (en) * | 2017-01-18 | 2017-05-31 | 刘肖俊 | A kind of high sensitivity multiple spot capacitive cell phone touch-screen |
| CN110174976A (en) * | 2019-04-26 | 2019-08-27 | 康惠（惠州）半导体有限公司 | High reliability capacitance touch screen |
| US20200218383A1 (en) * | 2012-11-30 | 2020-07-09 | Japan Display Inc. | Display device with touch detection device |
| CN112433639A (en) * | 2020-12-24 | 2021-03-02 | 烟台正海科技股份有限公司 | Capacitive touch screen, manufacturing method and application thereof |
| CN213634448U (en) * | 2020-11-26 | 2021-07-06 | 牧东光电科技有限公司 | Ultra-thin ultra-narrow multifunctional touch screen |
-
2021
- 2021-10-08 CN CN202111167916.2A patent/CN113608640A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150199057A1 (en) * | 2010-09-28 | 2015-07-16 | Japan Display Inc. | Display device with touch detection function and electronic unit |
| CN103173142A (en) * | 2011-12-20 | 2013-06-26 | 日东电工株式会社 | Optical pressure-sensitive adhesive sheet |
| US20200218383A1 (en) * | 2012-11-30 | 2020-07-09 | Japan Display Inc. | Display device with touch detection device |
| CN106227394A (en) * | 2016-07-26 | 2016-12-14 | 精电(河源)显示技术有限公司 | A kind of recessive cover plate touch screen and production method thereof |
| CN106775169A (en) * | 2017-01-18 | 2017-05-31 | 刘肖俊 | A kind of high sensitivity multiple spot capacitive cell phone touch-screen |
| CN110174976A (en) * | 2019-04-26 | 2019-08-27 | 康惠（惠州）半导体有限公司 | High reliability capacitance touch screen |
| CN213634448U (en) * | 2020-11-26 | 2021-07-06 | 牧东光电科技有限公司 | Ultra-thin ultra-narrow multifunctional touch screen |
| CN112433639A (en) * | 2020-12-24 | 2021-03-02 | 烟台正海科技股份有限公司 | Capacitive touch screen, manufacturing method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207766295U (en) | Smart mobile phone | |
| CN203260017U (en) | Touch panel | |
| CN103218073A (en) | Touch panel, manufacturing method thereof, display device, and electronic apparatus | |
| CN201352342Y (en) | Improved capacitive touch sensing structure | |
| CN104571682B (en) | Touch panel | |
| CN201867784U (en) | Capacitance touch induction device | |
| CN102622145A (en) | Projection type capacitive touch sensor structure and manufacturing method thereof | |
| CN105426008A (en) | Pressure sensing touch display screen and portable electronic product | |
| CN101320309A (en) | Single layer touch control sensing structure and touch control display panel using the same | |
| CN201765580U (en) | Monolithic capacitive touch sensing device | |
| CN101458410B (en) | Touch control type lcd device touch control liquid crystal display | |
| CN103970312A (en) | Touch display device | |
| CN101493594A (en) | Display device with touch screen function | |
| CN201293893Y (en) | Display device with touch screen function | |
| CN109656428A (en) | Touch panel | |
| CN106201040A (en) | The manufacture method of touch screen, display device and touch screen | |
| CN103218092B (en) | Touch panel, display device, and electronic apparatus | |
| CN104123050B (en) | Touch panel | |
| CN106354310A (en) | Touch panel, touch panel manufacturing method and touch display screen | |
| CN201594251U (en) | Projection capacitor-type touch panel | |
| CN113608640A (en) | Mutual capacitance type touch screen | |
| CN208547933U (en) | A kind of touch panel and the touch control display apparatus with the touch panel | |
| CN204303629U (en) | A kind of inductive type thin film switch | |
| CN205353979U (en) | Forced induction touch -control display screen and portable electronic products | |
| CN105425996B (en) | The manufacture method of contact panel and its frame circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211105 |
|
| RJ01 | Rejection of invention patent application after publication |