CN109885215A - A kind of capacitive touch screen with shield effectiveness - Google Patents
A kind of capacitive touch screen with shield effectiveness Download PDFInfo
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- CN109885215A CN109885215A CN201910270986.7A CN201910270986A CN109885215A CN 109885215 A CN109885215 A CN 109885215A CN 201910270986 A CN201910270986 A CN 201910270986A CN 109885215 A CN109885215 A CN 109885215A
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- touch screen
- capacitive touch
- shield effectiveness
- capacitor
- shielding
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- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 230000004888 barrier function Effects 0.000 claims abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The present invention discloses a kind of capacitive touch screen with shield effectiveness comprising liquid crystal display, barrier film layer, connector and wiring board；The first shielding chip, secondary shielding chip, processor and the first RC module being connected to the processor and the 2nd RC module are provided on the wiring board；The first shielding chip is equipped with multiple first shielding stitch, and the secondary shielding chip is equipped with multiple secondary shielding stitch；The first RC module includes multiple the first RC components being laterally arranged, and each first RC component includes first capacitor and first resistor interconnected；The 2nd RC module includes multiple the 2nd longitudinally disposed RC components, and each 2nd RC component includes the second capacitor interconnected and second resistance.The present invention increases RC component to every circuit of touch screen, and the resistance of every access filters out external interference electromagnetic wave, so that it is noiseless to meet capacitive touch screen, and meets electromagnetic compatibility.
Description
Technical field
The present invention relates to field of electronic device more particularly to a kind of capacitive touch screens with shield effectiveness.
Background technique
Existing capacitive touch screen itself can have shield effectiveness, traditional technique is to electromagnetic waveforms at shielding
Directly directly stick on a piece of screened film either shield glass in capacitive touch screen reverse side, screened film or shielding can only be met
Glass inwardly plays shielding action, and shield effectiveness is poor；And in military project or aviation field, to the performance requirement of shielding interference signal
It is very high.
Summary of the invention
In order to solve the problems in the existing technology, the present invention provides a kind of capacitance touch with shield effectiveness
Screen, the technical solution is as follows:
The present invention provides a kind of capacitive touch screen with shield effectiveness comprising liquid crystal display is arranged in the liquid crystal display
On barrier film layer, the connector being connect with the barrier film layer and the wiring board being connect with the connector；The route
The first shielding chip, secondary shielding chip, processor and the first RC module being connected to the processor are provided on plate
With the 2nd RC module；The first shielding chip is equipped with multiple first shielding stitch, and the secondary shielding chip is equipped with more
A secondary shielding stitch；The first RC module includes multiple the first RC components being laterally arranged, and each first RC component includes
First capacitor and first resistor interconnected, first power supply of the first resistor one end and processor far from first capacitor
Pin connection, the other end the first shielding pin connection corresponding with the first shielding chip；The first capacitor is far from first resistor
One end ground connection；The 2nd RC module includes multiple the 2nd longitudinally disposed RC components, and each 2nd RC component includes mutual
The second capacitor and second resistance of connection, second energization pins of the second resistance one end and processor far from the second capacitor
Connection, other end secondary shielding pin connection corresponding with secondary shielding chip；Second capacitor far from second resistance one
End ground connection.
Further, the number of the first RC component is set greater than 30 less than or equal to 60.
Further, the number of the 2nd RC component is set smaller than equal to 30.
Further, the multiple first RC component and multiple 2nd RC components are in matrix arrangement.
Further, the first RC module is vertically arranged with the 2nd RC module.
Further, the connector being connected to the processor, capacitor and multiple are additionally provided on the wiring board
Diode and triode.
Further, the barrier film layer includes the first glass substrate being arranged on liquid crystal display and is arranged in the first glass
The second glass substrate on substrate is provided with wire mesh between first glass substrate and the second glass substrate.
Technical solution bring provided by the invention has the beneficial effect that:
The present invention is transformed the circuit of touch screen, and increases RC component to every circuit of touch screen, to touch
The circuit of screen is transformed, and when external electromagnetic wave interference, the resistance of every access will filter out electromagnetic wave, to meet
Capacitive touch screen is noiseless, and meets electromagnetic compatibility.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the integrated circuit figure of the capacitive touch screen provided in an embodiment of the present invention with shield effectiveness；
Fig. 2 is the structural representation of the first RC component of the capacitive touch screen provided in an embodiment of the present invention with shield effectiveness
Figure；
Fig. 3 is the structural representation of the 2nd RC component of the capacitive touch screen provided in an embodiment of the present invention with shield effectiveness
Figure；
Fig. 4 is that the structure of the first shielding chip of the capacitive touch screen provided in an embodiment of the present invention with shield effectiveness is shown
It is intended to；
Fig. 5 is that the structure of the secondary shielding chip of the capacitive touch screen provided in an embodiment of the present invention with shield effectiveness is shown
It is intended to；
Fig. 6 is the test result figure of the shield effectiveness of conventional condenser touch screen provided in an embodiment of the present invention；
Fig. 7 is the test result of the shield effectiveness of the capacitive touch screen provided in an embodiment of the present invention with shield effectiveness
Figure.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Covering non-exclusive includes to be not necessarily limited to for example, containing the process, method of a series of steps or units, device, product or equipment
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
In one embodiment of the invention, a kind of capacitive touch screen with shield effectiveness, specific structure ginseng are provided
See Fig. 1 to Fig. 5 comprising liquid crystal display, the barrier film layer being arranged on the liquid crystal display, the connection connecting with the barrier film layer
Part and the wiring board being connect with the connector；Connector is preferably golden finger, refers to the outlet contacts with wiring board, even
Fitting is made of metal material, and to improve the electric conductivity of contact surface, metal material can be copper alloy or gold alloy, with great
Improve electric conductivity；The barrier film layer includes the first glass substrate being arranged on liquid crystal display and is arranged in the first glass substrate
On the second glass substrate, wire mesh, wire network optimization are provided between first glass substrate and the second glass substrate
It is selected as the copper mesh of hollow structure.The first shielding chip, secondary shielding chip, processor, Yi Jijun are provided on the wiring board
The first RC module being connected to the processor and the 2nd RC module keep one between the first RC module and the 2nd RC module
Fixed distance, it is preferable that the first RC module is vertically arranged with the 2nd RC module；The first shielding chip is equipped with multiple
First shielding stitch, referring to fig. 4, the secondary shielding chip is equipped with multiple secondary shielding stitch to the first shielding needle core piece, the
Two shielding needle core pieces are referring to Fig. 5.
The first RC module includes multiple the first RC components being laterally arranged, and the specific structure of the first RC component is referring to figure
2, each first RC component includes first capacitor and first resistor interconnected, the first resistor far from first capacitor one
End is connect with the first energization pins of processor, the other end the first shielding pin connection corresponding with the first shielding chip；It is described
First capacitor is grounded far from one end of first resistor；Multiple first RC components are arranged in matrix, and multiple first resistors are set in a row,
Multiple first capacitors are set in a row, and the multiple first resistors set in a row and the multiple first capacitors set in a row are alternately arranged
Column, i.e. first row are multiple first resistors, and second row is multiple first capacitors, and third row is multiple first resistors, and the 4th row is
Multiple first capacitors, are so alternately arranged；The first shielding stitch and the first RC component are one-to-one simultaneously.Pass through setting the
One RC component forms transverse line, can shield to Horizonal Disturbing signal.
According to the quantity of client's needs and the settable first RC component of size of chip, the number of the first RC component
It is set greater than 30 and is less than or equal to 60, in one embodiment of invention, the number of the first RC component is 43.
The 2nd RC module includes multiple the 2nd longitudinally disposed RC components, and the concrete outcome of the 2nd RC component is referring to figure
3, each 2nd RC component includes the second capacitor interconnected and second resistance, and the first capacitor and first resistor are in same
On one horizontal line, second energization pins of the second resistance one end and processor far from the second capacitor are connected, the other end with
The corresponding secondary shielding pin connection of secondary shielding chip；Second capacitor is grounded far from one end of second resistance；Multiple
Two RC components are arranged in matrix, and multiple second resistances are arranged in rows, arranged in rows and arranged in rows multiple of multiple second capacitors
Second resistance and multiple second capacitors arranged in rows are alternately arranged, i.e., first is classified as multiple second resistances, second be classified as it is multiple
Second capacitor, third are classified as multiple second resistances, and the 4th is classified as multiple second capacitors, are so alternately arranged.Secondary shielding simultaneously
Stitch and the 2nd RC component are correspondingly, to form vertical line by the 2nd RC component of setting, can be to Vertical Disturbing signal
It is shielded.
According to client need and chip the settable 2nd RC component of size number, the 2nd RC component
Number is set smaller than equal to 30, and in one embodiment of invention, the number of the 2nd RC component is 27.
The connector being connected to the processor, capacitor and multiple diodes and three are additionally provided on the wiring board
Pole pipe.
Barrier film layer is pasted on the capacitive touch screen that the present invention designs, and RC component is increased to every circuit of touch screen,
It is transformed with the circuit to touch screen, when external electromagnetic wave interference, the resistance of every access will filter out electromagnetic wave,
It is noiseless to meet capacitive touch screen, and meet electromagnetic compatibility.
The shield effectiveness for the capacitive touch screen that the present invention designs is tested, test result is shown in Fig. 7, and electric with tradition
The test result (see Fig. 6) of appearance formula touch screen shield effectiveness compares, and in figure 6 and figure 7, starting test frequency range is 40dB μ
The overstriking straight line of V/m be normal line, and an other wave be actual test line, from Fig. 6 it can be seen that, when test frequency increase
Added-time, the screening frequencies value on corresponding actual test line fluctuate bigger up and down compared with standard value, and conventional condenser touches
The shielding properties of screen is poor；From Fig. 7 it can be seen that, the screening frequencies value when test frequency increases, on corresponding actual test line
All in the controllability of standard value, screen effect leakage is all within critical field, therefore, the capacitive touch screen that the present invention designs
Shield effectiveness is more stable, and effect is more preferable.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of capacitive touch screen with shield effectiveness, which is characterized in that including liquid crystal display, be arranged on the liquid crystal display
Barrier film layer, the connector being connect with the barrier film layer and the wiring board being connect with the connector；On the wiring board
It is provided with the first shielding chip, secondary shielding chip, processor and the first RC module being connected to the processor and
Two RC modules；The first shielding chip is equipped with multiple first shieldings stitch, and the secondary shielding chip is equipped with multiple the
Two shielding stitch；
The first RC module includes multiple the first RC components being laterally arranged, and each first RC component includes interconnected
One capacitor and first resistor, the first energization pins connection of the first resistor one end and processor far from first capacitor, separately
One end the first shielding pin connection corresponding with the first shielding chip；The first capacitor is grounded far from one end of first resistor；
The 2nd RC module includes multiple the 2nd longitudinally disposed RC components, and each 2nd RC component includes interconnected
Two capacitors and second resistance, the second energization pins connection of the second resistance one end and processor far from the second capacitor, separately
One end secondary shielding pin connection corresponding with secondary shielding chip；Second capacitor is grounded far from one end of second resistance.
2. the capacitive touch screen according to claim 1 with shield effectiveness, which is characterized in that the first RC component
Number is set greater than 30 and is less than or equal to 60.
3. the capacitive touch screen according to claim 1 with shield effectiveness, which is characterized in that the 2nd RC component
Number is set smaller than equal to 30.
4. the capacitive touch screen according to claim 1 with shield effectiveness, which is characterized in that the multiple first RC group
Part and multiple 2nd RC components are in matrix arrangement.
5. the capacitive touch screen according to claim 1 with shield effectiveness, which is characterized in that the first RC module with
2nd RC module is vertically arranged.
6. the capacitive touch screen according to claim 1 with shield effectiveness, which is characterized in that also set on the wiring board
It is equipped with the connector being connected to the processor, capacitor and multiple diodes and triode.
7. the capacitive touch screen according to claim 1 with shield effectiveness, which is characterized in that the barrier film layer includes
The first glass substrate being arranged on liquid crystal display and the second glass substrate being arranged on the first glass substrate, first glass
Wire mesh is provided between substrate and the second glass substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270986.7A CN109885215A (en) | 2019-04-04 | 2019-04-04 | A kind of capacitive touch screen with shield effectiveness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270986.7A CN109885215A (en) | 2019-04-04 | 2019-04-04 | A kind of capacitive touch screen with shield effectiveness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109885215A true CN109885215A (en) | 2019-06-14 |
Family
ID=66936157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910270986.7A Pending CN109885215A (en) | 2019-04-04 | 2019-04-04 | A kind of capacitive touch screen with shield effectiveness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109885215A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090189875A1 (en) * | 2008-01-29 | 2009-07-30 | Research In Motion Limited | Electronic device and touch screen display |
| CN104135817A (en) * | 2014-06-17 | 2014-11-05 | 京东方科技集团股份有限公司 | Flexible printed circuit, preparation method of flexible printed circuit, and capacitive touch display device |
| CN104485983A (en) * | 2014-12-09 | 2015-04-01 | 深圳市汇顶科技股份有限公司 | Touch screen and terminal integrated with NFC (Near Filed Communication) antenna and near filed communication method thereof |
| CN204331685U (en) * | 2014-12-17 | 2015-05-13 | 深圳市帝晶光电股份有限公司 | A kind of anti-interference capacitor formula touch-screen |
| CN206411647U (en) * | 2017-01-09 | 2017-08-15 | 江西亿科光电有限公司 | A kind of capacitive touch screen of anti-electromagnetic wave interference |
| CN107466368A (en) * | 2016-03-29 | 2017-12-12 | 深圳市汇顶科技股份有限公司 | Portable electric appts, capacitance touch screen and capacitive detection circuit |
| CN208522835U (en) * | 2018-08-03 | 2019-02-19 | 惠州市米琦通信设备有限公司 | A kind of electricity saving of mobile terminal circuit |
| CN208548140U (en) * | 2018-08-08 | 2019-02-26 | 中山市悦辰电子实业有限公司 | A kind of circuit solving LED display interference tones |
| CN209417711U (en) * | 2019-04-04 | 2019-09-20 | 苏州智博信息科技有限公司 | A kind of capacitive touch screen with shield effectiveness |
-
2019
- 2019-04-04 CN CN201910270986.7A patent/CN109885215A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090189875A1 (en) * | 2008-01-29 | 2009-07-30 | Research In Motion Limited | Electronic device and touch screen display |
| CN104135817A (en) * | 2014-06-17 | 2014-11-05 | 京东方科技集团股份有限公司 | Flexible printed circuit, preparation method of flexible printed circuit, and capacitive touch display device |
| CN104485983A (en) * | 2014-12-09 | 2015-04-01 | 深圳市汇顶科技股份有限公司 | Touch screen and terminal integrated with NFC (Near Filed Communication) antenna and near filed communication method thereof |
| CN204331685U (en) * | 2014-12-17 | 2015-05-13 | 深圳市帝晶光电股份有限公司 | A kind of anti-interference capacitor formula touch-screen |
| CN107466368A (en) * | 2016-03-29 | 2017-12-12 | 深圳市汇顶科技股份有限公司 | Portable electric appts, capacitance touch screen and capacitive detection circuit |
| CN206411647U (en) * | 2017-01-09 | 2017-08-15 | 江西亿科光电有限公司 | A kind of capacitive touch screen of anti-electromagnetic wave interference |
| CN208522835U (en) * | 2018-08-03 | 2019-02-19 | 惠州市米琦通信设备有限公司 | A kind of electricity saving of mobile terminal circuit |
| CN208548140U (en) * | 2018-08-08 | 2019-02-26 | 中山市悦辰电子实业有限公司 | A kind of circuit solving LED display interference tones |
| CN209417711U (en) * | 2019-04-04 | 2019-09-20 | 苏州智博信息科技有限公司 | A kind of capacitive touch screen with shield effectiveness |
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Address after: 215000 101, building 27, No. 568, Zhongshan South Road, Taihu new town, Wujiang District, Suzhou City, Jiangsu Province Applicant after: Suzhou Zhi Bo Mdt InfoTech Ltd Address before: 215000 No. 18 Chengpu Road, Shengpu Town, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant before: Suzhou Zhi Bo Mdt InfoTech Ltd |
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