CN102621728A - Touch device with shielding layer - Google Patents
Touch device with shielding layer Download PDFInfo
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- CN102621728A CN102621728A CN201110030694XA CN201110030694A CN102621728A CN 102621728 A CN102621728 A CN 102621728A CN 201110030694X A CN201110030694X A CN 201110030694XA CN 201110030694 A CN201110030694 A CN 201110030694A CN 102621728 A CN102621728 A CN 102621728A
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- screen layer
- touch
- control device
- contactor control
- thin film
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Abstract
The invention discloses a touch device with a shielding layer. The touch device comprises a touch module and a display module, wherein the display module comprises a thin film transistor substrate, a color filter substrate, a liquid-crystal layer, a first polaroid, a second polaroid and the shielding layer. The shielding layer can be arranged between the color filter substrate and the second polaroid or on the second polaroid. The touch module comprises an upper cover substrate, a plurality of sensing pads and a protective layer, wherein the plurality of sensing pads are formed on the lower side of the upper cover substrate. The grounding voltage of the plurality of sensing pads is electrically connected with the shielding layer so as to isolate noises produced by the display module on the touch module.
Description
Technical field
The present invention relates to a kind of contactor control device, especially relate to a kind of contactor control device, to improve display module noise that touch-control module was produced with screen layer.
Background technology
Touch-control principle in the contact panel mainly is divided into: resistance-type, condenser type, acoustic wave and infrared-type, wherein again with resistance-type and condenser type comparatively on the industry member utilized.Electric resistance touch-control panel is made up of two conducting strips; Intermediate section at two conducting strips is furnished with some spacers (spacer); When not pressed, this two conducting strip is the state of not conducting each other; When the top has that flexible conducting strip is pressed and when squeezing out spacer below the pressure spot and forming conducting strip conducting up and down, just can obtain the coordinate of pressure spot through resistance and the relation that applies bias voltage in this conducting loop of measuring.Compared to the resistor type touch control plate that needs bias voltage; Extended capacitance variations when the operating principle of capacitance type touch-control panel comes from finger or conductor touching Trackpad; When conductor or finger contact insulation layer surface; Below distributed capacitance sensor pad just can measure the difference of finger/conductor electric capacity that produces when contacting according to this, calculates the coordinate of contact point with this.
Please refer to Fig. 1, Fig. 1 is the synoptic diagram of the capacitive touch device of background technology.Contactor control device 100 comprises touch-control module 110 and display module 120.Display module 120 comprises first polaroid 121, thin film transistor base plate 122, liquid crystal layer 123, colored filter substrate 124 and second polaroid 125.Liquid crystal layer 123 is arranged between thin film transistor base plate 122 and the colored filter substrate 124, and first polaroid 121 is attached on the thin film transistor base plate 122, and second polaroid 125 is attached on the colored filter substrate 124.Touch-control module 110 is attached on the display module 120 through cementing layer 131.Touch-control module 110 comprises loam cake substrate 111, a plurality of sensor pad (sensor pattern) 112, protective seam 113, sensing substrate (sensor glass) 114 and screen layer 115.Sensing substrate 114 is a glass material; Can utilize tin indium oxide (Indium Tin Oxide; ITO) sputter (sputtering) in the below of sensing substrate 114 to form screen layer 115; Because the thickness of sensing substrate 114 is about 1mm, does not influence touch-control sensing so can not produce excessive coupling capacitance between screen layer 115 and the sensor pad 112.A plurality of sensor pads 112 are used for the position of sensing touch-control, when producing inductance capacitance because of touch-control between the sensor pad 112, just can judge the position of touch-control through the variation of capacitance.A plurality of sensor pads 112 are formed on the sensing substrate 114; Has protective seam 113 on a plurality of sensor pads 112; Loam cake substrate 111 is arranged at protective seam 113 tops, and the user carries out touch control operation in the upside of loam cake substrate 111, so loam cake substrate 111 is wear-resisting and scratch resistant material.Screen layer 115 is arranged at the downside of sensing substrate 114, and the ground voltage of a plurality of sensor pads 112 is electrically connected on screen layer 115, and screen layer 115 can intercept the noise that 120 pairs of touch-control modules 110 of display module are produced.
Above-mentioned touch-control module 110 is the structure of double layer substrate, and just touch-control module 110 comprises loam cake substrate 111 and sensing substrate 114, and a plurality of sensor pads 112 are formed on the sensing substrate 114.Yet in order to reduce the thickness of contactor control device, a lot of contactor control devices use the touch-control module of single layer substrate structure, and just a plurality of sensor pads directly are formed at the downside of loam cake substrate, protective mulch on the sensor pad.Because the thickness of protective seam is approximately several microns (10
-6M), if screen layer is arranged on the protective seam, meeting produces excessive coupling capacitance and influences touch-control sensing between screen layer and the sensor pad.Yet if screen layer is not set, the noise that display module produced will have a strong impact on the sensing of touch-control module.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of contactor control device, to solve the above problems with screen layer.
The present invention provides a kind of contactor control device, comprises a display module and a touch-control module.This display module comprises a thin film transistor base plate, a colored filter substrate, a liquid crystal layer, one first polaroid, a screen layer and one second polaroid.This liquid crystal layer is arranged between this thin film transistor base plate and this colored filter substrate.This first polaroid is attached at this thin film transistor base plate.This screen layer is arranged on this colored filter substrate.This second polaroid is attached on this screen layer.This touch-control module comprises a loam cake substrate, a plurality of sensor pad and a protective seam.These a plurality of sensor pads are formed at the downside of this loam cake substrate, and these a plurality of sensor pads are electrically connected on this screen layer.This protective seam is formed on these a plurality of sensor pads, and the thickness of this protective seam is about several microns (10
-6M), the downside of this protective seam is attached on this display module through a cementing layer.
The present invention provides a kind of contactor control device in addition, comprises a display module and a touch-control module.This display module comprises a thin film transistor base plate, a colored filter substrate, a liquid crystal layer, one first polaroid, one second polaroid and a screen layer.This liquid crystal layer is arranged between this thin film transistor base plate and this colored filter substrate.This first polaroid is attached at this thin film transistor base plate.This second polaroid is attached at this colored filter substrate.This screen layer is arranged on this second polaroid.This touch-control module comprises a loam cake substrate, a plurality of sensor pad and a protective seam.These a plurality of sensor pads are formed at the downside of this loam cake substrate, and these a plurality of sensor pads are electrically connected on this screen layer.This protective seam is formed on these a plurality of sensor pads, and the thickness of this protective seam is about several microns (10
-6M), the downside of this protective seam is attached on this display module through a cementing layer.
Description of drawings
Fig. 1 is the synoptic diagram of the capacitive touch device of background technology;
Fig. 2 is the synoptic diagram of first embodiment of contactor control device of the present invention;
Fig. 3 is the synoptic diagram of the ground voltage of contactor control device of the present invention;
Fig. 4 is the synoptic diagram of the Touch Zone and the viewing area of contactor control device of the present invention;
Fig. 5 is the synoptic diagram of second embodiment of contactor control device of the present invention.
The main element symbol description
100,200,500 contactor control devices
110,210,510 touch-control modules
111,211,511 loam cake substrates
112,212, more than 512 sensor pad
113,213,513 protective seams
114 sensing substrates
120,220,520 display modules
121,221,521 first polaroids
122,222,522 thin film transistor base plates
123,223,523 liquid crystal layers
124,224,524 colored filter substrates
125,225,525 second polaroids
115,226,526 screen layers
131,231,531 cementing layers
217 Touch Zones
227 viewing areas
310 flexible circuit boards
311 ground voltage districts
321,322,323 ground voltages
Embodiment
Please refer to Fig. 2, Fig. 2 is the synoptic diagram of first embodiment of contactor control device of the present invention.Contactor control device 200 comprises touch-control module 210 and display module 220.Display module 220 comprises first polaroid 221, thin film transistor base plate 222, liquid crystal layer 223, colored filter substrate 224, second polaroid 225 and screen layer 226.Liquid crystal layer 223 is arranged between thin film transistor base plate 222 and the colored filter substrate 224; First polaroid 221 is attached on the thin film transistor base plate 222; Screen layer 226 is arranged on the colored filter substrate 224, and second polaroid 225 is attached on the screen layer 226.Touch-control module 210 comprises loam cake substrate 211, a plurality of sensor pad 212 and protective seam 213.The downside of loam cake substrate 211 is attached on the display module 220 through cementing layer 231, and a plurality of sensor pads 212 are formed at the downside of loam cake substrate 211, has protective seam 213 on a plurality of sensor pads 212.Touch-control module 210 is the structure of single layer substrate, and just a plurality of sensor pads 212 directly are formed at the downside of loam cake substrate 211.Because the thickness of protective seam 213 is approximately several microns (10
-6M), so on the protective seam 213 screen layer can't be set again.Therefore, contactor control device 200 of the present invention is arranged at screen layer 226 in the display module 220, and the ground voltage of touch-control module 210 is electrically connected on screen layer 226, to intercept the noise that 220 pairs of touch-control modules 210 of display module are produced.In the present embodiment; Screen layer 226 comprises two kinds of embodiments; First kind of mode is to utilize polyethylene terephthalate (the Polyethylene terephthalate that is coated with conductive layer; PET) film forms screen layer 226 and is attached on the colored filter substrate 224, and the second way is to utilize tin indium oxide (Indium Tin Oxide, manufacture craft ITO) forms screen layer 226 and is deposited on the colored filter substrate 224.
Please refer to Fig. 3, Fig. 3 is the synoptic diagram of the ground voltage of contactor control device of the present invention.Contactor control device 200 comprises flexible circuit board 310 in addition, has ground voltage district 311 on the flexible circuit board 310.Touch-control module 210 and display module 220 have ground voltage 321,322 respectively; The ground voltage 321 of a plurality of sensor pads 212 of touch-control module 210 is electrically connected on the ground voltage district 311 of flexible circuit board 310; The ground voltage 323 of screen layer 226 is electrically connected on the ground voltage district 311 of flexible circuit board 310, so the ground voltage 321 of a plurality of sensor pad 212 is electrically connected on screen layer 226 through flexible circuit board 310.For contactor control device 200; Touch-control module 210 and display module 220 have identical ground voltage; So the ground voltage 322 of display module 220 is electrically connected on the ground voltage district 311 of flexible circuit board 310; Just thin film transistor base plate 222 is grounded to ground voltage district 311 via flexible circuit board 310, makes screen layer 226 consistent with the earthing potential of thin film transistor base plate 222.So, the ground voltage 321,322 of touch-control module 210 and display module 220 can be electrically connected through the ground voltage district 311 of flexible circuit board 310.Contactor control device 200 of the present invention is owing to use the touch-control module 210 of single layer structure; On the touch-control module 210 screen layer can't be set; Yet has screen layer 226 on the display module 220; Through flexible circuit board 310 ground voltage 321 of a plurality of sensor pads 212 is electrically connected on screen layer 226 again, so contactor control device 200 can intercept the noise that 220 pairs of touch-control modules 210 of display modules are produced through screen layer 226.
Please refer to Fig. 4, Fig. 4 is the synoptic diagram of the Touch Zone and the viewing area of contactor control device of the present invention.Contactor control device 200 of the present invention comprises the touch-control module 210 and the display module 220 of single layer structure; Touch-control module 210 is attached on the display module 220 through cementing layer 231, and has screen layer 226 on the display module 220 and can intercept the noise that 220 pairs of touch-control modules 210 of display module are produced.The zone of touch control operation can be carried out for the user in the Touch Zone 217 of touch-control module 210, and the viewing area 227 of display module 220 is user's viewing area.Be integrated in the contactor control device of display module compared to sensor pad, the Touch Zone 217 of contactor control device 200 of the present invention is greater than viewing area 227, so can provide user sensitiveer touch control operation, particularly user edge of display area carry out touch control operation the time.Because the sensor pad at the edge of Touch Zone 217 is also imperfect; So respond to more insensitive; If but Touch Zone 217 is during greater than viewing area 227,217 touch control operations that carry out all are to be responded to by complete sensor pad to the user in the Touch Zone, do not have the insensitive problem of induction and take place.
Please refer to Fig. 5, Fig. 5 is the synoptic diagram of second embodiment of contactor control device of the present invention.Contactor control device 500 comprises touch-control module 510 and display module 520.Display module 520 comprises first polaroid 521, thin film transistor base plate 522, liquid crystal layer 523, colored filter substrate 524, second polaroid 525 and screen layer 526.Touch-control module 510 comprises loam cake substrate 511, a plurality of sensor pad 512 and protective seam 513.The downside of loam cake substrate 511 is attached on the display module 520 through cementing layer 531, and a plurality of sensor pads 512 are formed at the downside of loam cake substrate 511, has protective seam 513 on a plurality of sensor pads 512.Touch-control module 510 is the structure of single layer substrate, and just a plurality of sensor pads 512 directly are formed at the downside of loam cake substrate 511.Because the thickness of protective seam 513 is approximately several microns (10
-6M), so on the protective seam 513 screen layer can't be set again.Therefore, contactor control device 500 of the present invention is arranged at screen layer 526 in the display module 520, and the ground voltage of touch-control module 510 is electrically connected on screen layer 526, to intercept the noise that 520 pairs of touch-control modules 510 of display module are produced.In the present embodiment, second polaroid 525 is attached on the colored filter substrate 524, and screen layer 526 is arranged on second polaroid 525.Because the manufacture craft that second polaroid can't bear tin indium oxide (ITO) so screen layer 526 is to utilize the film of the polyethylene terephthalate (PET) that is coated with conductive layer to form, is attached on second polaroid 525 again.
In sum, contactor control device of the present invention comprises the touch-control module and the display module of single layer structure, and touch-control module is attached on the display module through cementing layer.Display module comprises thin film transistor base plate, colored filter substrate, liquid crystal layer, first polaroid, second polaroid and screen layer, and touch-control module comprises loam cake substrate, a plurality of sensor pad and protective seam.Screen layer can be arranged between the colored filter substrate and second polaroid or be arranged on second polaroid.A plurality of sensor pads are formed at the downside of loam cake substrate, and the ground voltage of a plurality of sensor pads is electrically connected on screen layer through flexible circuit board, so screen layer can intercept display module to noise that touch-control module produced.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (14)
1. contactor control device comprises:
Display module comprises:
Thin film transistor base plate;
Colored filter substrate;
Liquid crystal layer is arranged between this thin film transistor base plate and this colored filter substrate;
First polaroid is attached at this thin film transistor base plate;
Screen layer is arranged on this colored filter substrate; And
Second polaroid is attached on this screen layer; And
Touch-control module comprises:
The loam cake substrate;
A plurality of sensor pads are formed at the downside of this loam cake substrate, and these a plurality of sensor pads are electrically connected on this screen layer; And
Protective seam is formed on these a plurality of sensor pads, and the thickness of this protective seam is about several microns (10
-6M), the downside of this protective seam is attached on this display module through a cementing layer.
2. contactor control device as claimed in claim 1, wherein this screen layer is polyethylene terephthalate (Polyethylene terephthalate, PET) film that is coated with a conductive layer.
3. contactor control device as claimed in claim 1, wherein this screen layer is by tin indium oxide (Indium Tin Oxide, ITO) formed screen layer.
4. contactor control device as claimed in claim 3, wherein the formed screen layer sputter of this tin indium oxide (ITO) (sputtering) is on this colored filter substrate.
5. contactor control device as claimed in claim 1, wherein this display module comprises a viewing area, and this touch-control module comprises the Touch Zone, and this Touch Zone is greater than this viewing area.
6. contactor control device as claimed in claim 1, wherein this touch-control module comprises flexible circuit board, and these a plurality of sensor pads are electrically connected on this screen layer through this flexible circuit board.
7. contactor control device as claimed in claim 6, wherein this flexible circuit board comprises the ground voltage district, and the ground voltage of these a plurality of sensor pads and this screen layer are electrically connected this ground voltage district.
8. contactor control device as claimed in claim 7, wherein this thin film transistor base plate is grounded to this ground voltage district via this flexible circuit board, so that this screen layer is consistent with the earthing potential of this thin film transistor base plate.
9. contactor control device comprises:
Display module comprises:
Thin film transistor base plate;
Colored filter substrate;
Liquid crystal layer is arranged between this thin film transistor base plate and this colored filter substrate;
First polaroid is attached at this thin film transistor base plate;
Second polaroid is attached at this colored filter substrate; And
Screen layer is arranged on this second polaroid; And
Touch-control module comprises:
The loam cake substrate;
A plurality of sensor pads are formed at the downside of this loam cake substrate, and these a plurality of sensor pads are electrically connected on this screen layer; And
Protective seam is formed on these a plurality of sensor pads, and the thickness of this protective seam is about several microns (10
-6M), the downside of this protective seam is attached on this display module through a cementing layer.
10. contactor control device as claimed in claim 9, wherein this screen layer is polyethylene terephthalate (Polyethylene terephthalate, film PET) that is coated with a conductive layer.
11. contactor control device as claimed in claim 9, wherein this display module comprises the viewing area, and this touch-control module comprises the Touch Zone, and this Touch Zone is greater than this viewing area.
12. contactor control device as claimed in claim 9, wherein this touch-control module comprises flexible circuit board, and these a plurality of sensor pads are electrically connected on this screen layer through this flexible circuit board.
13. contactor control device as claimed in claim 12, wherein this flexible circuit board comprises the ground voltage district, and the ground voltage of these a plurality of sensor pads and this screen layer are electrically connected this ground voltage district.
14. contactor control device as claimed in claim 13, wherein this thin film transistor base plate is grounded to this ground voltage district via this flexible circuit board, so that this screen layer is consistent with the earthing potential of this thin film transistor base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110030694.XA CN102621728B (en) | 2011-01-28 | 2011-01-28 | Touch device with shielding layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110030694.XA CN102621728B (en) | 2011-01-28 | 2011-01-28 | Touch device with shielding layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102621728A true CN102621728A (en) | 2012-08-01 |
| CN102621728B CN102621728B (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110030694.XA Active CN102621728B (en) | 2011-01-28 | 2011-01-28 | Touch device with shielding layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102621728B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235357A (en) * | 2013-04-27 | 2013-08-07 | 北京安通立祥科技发展有限公司 | Polarizing sheet, liquid crystal display panel using same, and manufacturing method of liquid crystal display panel |
| CN104615292A (en) * | 2013-11-05 | 2015-05-13 | 群创光电股份有限公司 | Touch control display device |
| CN104951152A (en) * | 2014-03-27 | 2015-09-30 | 原相科技股份有限公司 | Capacitive touch display device with noise offset function |
| WO2015143735A1 (en) * | 2014-03-24 | 2015-10-01 | 深圳市华星光电技术有限公司 | Liquid crystal display panel |
| CN106155389A (en) * | 2015-04-13 | 2016-11-23 | 南昌欧菲光科技有限公司 | Display device and touch-control display module thereof |
| CN106873818A (en) * | 2015-12-11 | 2017-06-20 | G2触控股份有限公司 | Display device with embedded touch-screen and the method for detecting touch |
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| EP0448225A2 (en) * | 1990-02-22 | 1991-09-25 | Sony Corporation | Input information processing apparatus using pointing means |
| TW200837679A (en) * | 2006-11-06 | 2008-09-16 | Epson Imaging Devices Corp | Electro-optical device, method of manufacturing electro-optical device, and electronic apparatus |
| CN101305338A (en) * | 2006-03-08 | 2008-11-12 | 夏普株式会社 | Display device |
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| EP0448225A2 (en) * | 1990-02-22 | 1991-09-25 | Sony Corporation | Input information processing apparatus using pointing means |
| CN101305338A (en) * | 2006-03-08 | 2008-11-12 | 夏普株式会社 | Display device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235357A (en) * | 2013-04-27 | 2013-08-07 | 北京安通立祥科技发展有限公司 | Polarizing sheet, liquid crystal display panel using same, and manufacturing method of liquid crystal display panel |
| CN104615292A (en) * | 2013-11-05 | 2015-05-13 | 群创光电股份有限公司 | Touch control display device |
| WO2015143735A1 (en) * | 2014-03-24 | 2015-10-01 | 深圳市华星光电技术有限公司 | Liquid crystal display panel |
| CN104951152A (en) * | 2014-03-27 | 2015-09-30 | 原相科技股份有限公司 | Capacitive touch display device with noise offset function |
| CN104951152B (en) * | 2014-03-27 | 2017-11-28 | 原相科技股份有限公司 | Has the capacitive touch control display device of noise payment function |
| CN106155389A (en) * | 2015-04-13 | 2016-11-23 | 南昌欧菲光科技有限公司 | Display device and touch-control display module thereof |
| CN106873818A (en) * | 2015-12-11 | 2017-06-20 | G2触控股份有限公司 | Display device with embedded touch-screen and the method for detecting touch |
| CN106873818B (en) * | 2015-12-11 | 2020-03-31 | G2触控股份有限公司 | Display device with embedded touch screen and method for detecting touch |
Also Published As
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|---|---|
| CN102621728B (en) | 2014-12-24 |
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