CN102193225B - Touch panel and touch display device - Google Patents
Touch panel and touch display device Download PDFInfo
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- CN102193225B CN102193225B CN201010135576.0A CN201010135576A CN102193225B CN 102193225 B CN102193225 B CN 102193225B CN 201010135576 A CN201010135576 A CN 201010135576A CN 102193225 B CN102193225 B CN 102193225B
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Abstract
The invention discloses a touch panel and a touch display device. The touch panel comprises a thin film transistor substrate, a color filter substrate, at least one first touch sensing electrode and at least one first conductive convex block, wherein the color filter substrate and the thin film transistor substrate are opposite to each other; the first touch sensing electrode is arranged on one side, close to the thin film transistor substrate, of the color filter substrate; and the first conductive convex block is arranged between the color filter substrate and the thin film transistor substrate, and electrically connected with the first touch sensing electrode and the thin film transistor substrate respectively. According to the touch panel and the touch display device, the volume can be reduced and the production process can be simplified.
Description
Technical field
The present invention relates to a kind of touch panel and touch control display device.
Background technology
Along with science and technology constantly progress, various information equipment is constantly weeded out the old and bring forth the new.Wherein, with data input device, except generally with except keyboard or mouse input data, utilize touch technology to input the selection that data are also another kind of input modes.Because people is except having vision and the sense of hearing, still there is sense of touch, and along with sensor technology constantly more new breakthrough, another making thoughts and feelings formula sensor become people and information equipment to link up is selected.
On the other hand, for the person that is unfamiliar with computer, operationally there is certain degree of difficulty, and cause one of obstacle of computer universalness in traditional computer inputting interface (such as keyboard or mouse).In order to more intuitive operating equipment can be provided, recent dealer and positive development touch panel (touch panel).Touch panel has the inputting interface characteristic of hommization, makes the user of any age level directly with finger or pointer input data, or can choose the function choosing-item on touch panel.
Generally speaking, touch panel arranges a Trackpad in addition on a display surface of a display panel (such as display panels).But the extra Trackpad arranged is except increasing the integral thickness of touch panel, and the increase that material cost also can be relative.Recently, there is dealer to be integrated in display panel by Trackpad, thus, to save material cost and to reduce the thickness of touch panel.
Please refer to shown in Fig. 1, known touch panel 1 comprises common voltage electrode 105, insulation course 106, touch sensing electrode 107, the active component device 108 of thin film transistor base plate 101, colored optical filtering substrates 102, touch sensing control module 103, driver element 104, one and a sealing 109.
Thin film transistor base plate 101 is relative with colored optical filtering substrates 102 and establish, driver element 104 and active component device 108 are arranged at the side of thin film transistor base plate 101, wherein active component device 108 can comprise many thin film transistor (TFT)s and many pixel electrodes, and driver element 104 exports a drive singal to drive thin film transistor (TFT).Touch sensing control module 103 and common voltage electrode 105 are arranged at the side of colored optical filtering substrates 102.
In the framework of known touch panel 1, distance between thin film transistor base plate 101 and colored optical filtering substrates 102 is less than the height summation of touch sensing control module 103 and driver element 104, and touch sensing control module 103 and driver element 104 must be crisscross arranged.But information equipment is now with light, thin, short, little for designer trends, and therefore, the touch sensing control module 103 arranged in an interleaved manner and driver element 104 increase making the volume of touch panel 1.
In addition, if touch sensing control module 103 and driver element 104 are separately positioned on thin film transistor base plate 101 with on colored optical filtering substrates 102, then touch sensing control module 103 and driver element 104 certainly will respectively thin film transistor base plate 101 with colored optical filtering substrates 102 carries out engage (bonding) technique, this not only makes processing step increase, improve difficulty in process degree, and circuit can not be interconnected.But, if touch sensing control module 103 and driver element 104 carry out joint technology on the same substrate, then can Simplified flowsheet complexity.
Therefore, how to provide a kind of can reduced volume and simplify the touch panel of production technology and touch control display device, real is one of important topic now.
Summary of the invention
Because above-mentioned problem, object of the present invention for provide a kind of can reduced volume and simplify touch panel and the touch control display device of production technology.
For reaching above-mentioned purpose, the invention provides a kind of touch panel, it comprises a thin film transistor base plate, a colored optical filtering substrates, at least one first touch sensing electrode and at least one first conductive projection.Colored optical filtering substrates is relative with thin film transistor base plate and establish.First touch sensing electrode is arranged at the side of colored optical filtering substrates near thin film transistor base plate.First conductive projection is arranged between colored optical filtering substrates and thin film transistor base plate, and is electrically connected with the first touch sensing electrode and thin film transistor base plate respectively.
In one embodiment of this invention, touch panel also comprises a driver element, and it is arranged at thin film transistor base plate, and produces a drive singal driving pixel electrode.
In one embodiment of this invention, touch panel also comprises a touch sensing control module, and it is arranged at thin film transistor base plate, and is electrically connected via the first touch sensing electrode of the first conductive projection and colored optical filtering substrates.
For reaching above-mentioned purpose, the invention provides a kind of touch control display device, it comprises a backlight module and a touch panel.Touch panel and this backlight module are oppositely arranged.This touch panel has a thin film transistor base plate, a colored optical filtering substrates, at least one first touch sensing electrode and at least one first conductive projection.Colored optical filtering substrates is relative with thin film transistor base plate and establish.First touch sensing electrode is arranged at the side of colored optical filtering substrates near thin film transistor base plate.First conductive projection is arranged between colored optical filtering substrates and thin film transistor base plate, and is electrically connected with the first touch sensing electrode and thin film transistor base plate respectively.
From the above, according to touch panel of the present invention and touch control display device, a sensing signal of the first touch sensing electrode is sent to thin film transistor base plate by the first conductive projection by it.Therefore, drive a driver element of the many thin film transistor (TFT)s on thin film transistor base plate, and the touch sensing control module receiving sensing signal can be arranged on identical substrate respectively, and be arranged at again on same substrate after more driver element and touch sensing control module can being integrated.Compared to known technology, touch sensing control module and driver element can be integrated into thin film transistor base plate by touch panel of the present invention and touch control display device, save space thus and reduce the volume of touch panel and touch control display device, and the joint technology of driver element and touch sensing control module can be simplified.
Accompanying drawing explanation
Fig. 1 is known touch control display device one schematic diagram of display;
Fig. 2 A to Fig. 2 G is a schematic diagram of the touch panel of the display preferred embodiment of the present invention; And
Fig. 3 is a schematic diagram of the touch control display device of the display preferred embodiment of the present invention.
Description of reference numerals
1: touch panel 101: thin film transistor base plate
102: colored optical filtering substrates 103: touch sensing control module
104: driver element 105: common voltage electrode
106: insulation course 107: touch sensing electrode
108: pixel electrode 109: sealing
2: touch panel 201: thin film transistor base plate
202: colored optical filtering substrates 203: the first touch sensing electrode
204: the first conductive projections 205: common voltage electrode
206: photoresist layer 207: liquid crystal layer
208: pixel electrode 209: sealing
210: black matrix" 211: polaroid
212: the second conductive projections 213: driver element
214: touch sensing control module 215: the second touch sensing electrode
216: insulation course 217: geometric scheme
3: touch control display device 31: touch panel
32: backlight module 321: light source
322: diffuser plate 323: optical diaphragm group
A: region L1: light
Embodiment
Touch technology can be divided into resistance-type (Resistive), condenser type (Capacitive), acoustic wave (Surface Acoustic Wave) and optical profile type (Optics) etc. four kinds according to principle of induction.Be described for the wider capacitive technologies principle of public use aspect application at this.Hereinafter with reference to relevant indicators, the touch panel according to the preferred embodiment of the present invention and touch control display device are described.
Please refer to shown in Fig. 2 A and Fig. 2 B, wherein, Fig. 2 A is the vertical view of the touch panel 2 of the preferred embodiment of the present invention, and Fig. 2 B is the sectional view of A-A line in Fig. 2 A.Touch panel 2 of the present invention comprises thin film transistor base plate 201, colored optical filtering substrates 202, at least one first touch sensing electrode 203, at least one first conductive projection 204 and common voltage electrode 205.
Thin film transistor base plate 201 is relative with colored optical filtering substrates 202 and establish, in the present embodiment, thin film transistor base plate 201 can have different materials in response to actual demand, such as thin film transistor base plate 21 and colored optical filtering substrates 202 can be respectively a glass substrate or a plastic base.
First touch sensing electrode 203 is arranged at the side of colored optical filtering substrates 202 near thin film transistor base plate 201 respectively with common voltage electrode 205.First conductive projection 204 is arranged between colored optical filtering substrates 202 and thin film transistor base plate 201, and is electrically connected with the first touch sensing electrode 203 and thin film transistor base plate 201 respectively.In the present embodiment, the material of the first conductive projection 204 comprise gold, tin, copper and alloy thereof at least one of them, certainly, the first conductive projection 204 also can comprise other conductive material, usually utilizes in glue material, be mixed into conductive gold spacer as the first conductive projection 204 at this.
Shown in Fig. 2 B, the touch panel 2 of the present embodiment also comprises photoresist layer 206, liquid crystal layer 207, pixel electrode 208, sealing 209, black matrix" 210 and a polaroid 211.
Photoresist layer 206 is arranged between the first touch sensing electrode 203 and common voltage electrode 205.Pixel electrode 208 is arranged at the side of thin film transistor base plate 201 near colored optical filtering substrates 202, and liquid crystal layer 207 is arranged between common voltage electrode 205 and pixel electrode 208.In the present embodiment, photoresist layer 206 can hinder for red light, green photoresistance, blue light resistance or planarization photoresistance one or its combine arbitrarily.
Sealing 209 is arranged between thin film transistor base plate 201 and colored optical filtering substrates 202, leaks to prevent liquid crystal layer 207.Black matrix" 210 is arranged between colored optical filtering substrates 202 and the first touch sensing electrode 203, to cover the part beyond display pixel.Polarizer 211 is arranged at the side of colored optical filtering substrates 202 away from thin film transistor base plate 201.Wherein, black matrix" 210 also can be integrated in photoresist layer 206, is not limited its aspect at this.
Please refer to shown in Fig. 2 C, Fig. 2 C is the sectional view of B-B line in Fig. 2 A.The touch panel 2 of the present embodiment also comprises at least one second conductive projection 212, and it is arranged between thin film transistor base plate 201 and colored optical filtering substrates 202.On the implementation, the second conductive projection 212 is electrically connected with common voltage electrode 205 and pixel electrode 208 respectively.In the present embodiment, second conductive projection 212 comprise gold, tin, copper and alloy thereof at least one of them, certainly, the second conductive projection 212 also can comprise other conductive material, usually utilizes in glue material, be mixed into conductive gold spacer as the second conductive projection 212 at this.In the present embodiment, pixel electrode 208 is also extensible and be electrically connected with conductive pattern (signal wire on such as circuit board).
In addition, the touch panel 2 of the present embodiment also comprises driver element 213 and a touch sensing control module 214, and it is electrically connected with conductive pattern respectively, to make intracellular signaling.When there being people's contact surface plate 2, the signal produced at the first touch sensing electrode 203 can conduct to thin film transistor base plate 201 by the first conductive projection 204 and the second conductive projection 212, then by the design of suitable conductive pattern, signal can be delivered to touch sensing control module 214.
Driver element 213 and touch sensing control module 214 are arranged at the side of thin film transistor base plate 201 respectively, and driver element 213 produces at least one thin film transistor (TFT) that a drive singal drives thin film transistor base plate 201.In the present embodiment, driver element 213 or touch sensing control module 214 comprise a chip or an integrated circuit.In addition, driver element 213 and touch sensing control module 214 also can be integrated in same integrated circuit.
Because human body is an electrified body, therefore, when people does not contact with touch panel 2, various electrode is idiostatic, and touch panel 2 does not have electric current to pass through.When contacting with touch panel 2, the electrostatic inflow surface in human body and produce weak current and pass through.Now, touch sensing control module 214 receives the electric charge knots modification on the first touch sensing electrode 203 by the first conductive projection 204 and thin film transistor base plate 201, and judges touch position according to electric charge knots modification.
Shown in Fig. 2 C and Fig. 2 D, wherein Fig. 2 D is the sectional view of C-C line in Fig. 2 A.Can find out that photoresist layer 206 is arranged between the first touch sensing electrode 203 and common voltage electrode 205 by Fig. 2 C and Fig. 2 D.
The touch panel 2 (as mentioned above) except the touch sensing electrode being designed to full slice system of the present embodiment, also can be designed to the touch sensing electrode of alternating expression.Please refer to shown in Fig. 2 E, it is the simple schematic top plan view of the touch panel 2 of the present embodiment.Wherein the first touch sensing electrode 203 and the interlaced arrangement of the second touch sensing electrode 215.
Fig. 2 F is the sectional view of A-A line in Fig. 2 E.Please refer to shown in Fig. 2 F, the touch panel 2 of the present embodiment also comprises at least one second touch sensing electrode 215 and insulation course 216.Wherein, the second touch sensing electrode 215 and the first touch sensing electrode 203 are oppositely arranged, and insulation course 216 is arranged between the first touch sensing electrode 203 and the second touch sensing electrode 215.Fig. 2 G be in the region B of Fig. 2 E the first touch sensing electrode 203 and the second touch sensing electrode 215 overlook enlarged drawing.In fig 2g, the first touch sensing electrode 203 of part and the second touch sensing electrode 215 of part have the overlapping as shown in the B of region in a projecting direction.Outside overlapping, first touch sensing electrode 203 and/or the second touch sensing electrode 215 have a geometric scheme 217, and in the present embodiment, geometric scheme 217 can be a quadrilateral, triangle, circle or polygon, at this, geometric scheme 217 illustrates for quadrilateral.
Shown in Fig. 2 F and Fig. 2 G, the first touch sensing electrode 203 and the second touch sensing electrode 215 form a capacity effect in overlapping.When overlapping area is larger, a larger equivalent capacity can be formed, contrary, when overlapping area is less, less equivalent capacity can be formed.
In the aspect of alternating expression touch sensing electrode, make the distance between the first touch sensing electrode 203 and the second touch sensing electrode 215 change by pressing, and by Resistance-Capacitance delay (R-Cdelay) phenomenon by touch sensing control module 214 sense be what point be pressed.
It should be noted that the first touch sensing electrode 203 and/or the electrode width of the second touch sensing electrode 215 in the C of region of the present embodiment are narrower.First touch sensing electrode 203 and/or the second touch sensing electrode 215 wider away from the electrode width of one end of region C at geometric scheme 217, reduce the overlapping area of the first touch sensing electrode 203 and the second touch sensing electrode 215 thus.Therefore, the touch panel 2 of the present embodiment can reduce capacity effect, and increases the sensing region of the first touch sensing electrode 203 and the second touch sensing electrode 215.
Shown in Fig. 3, the touch control display device 3 of the preferred embodiment of the present invention comprises touch panel 31 and a backlight module 32.Wherein, backlight module 32 and touch panel 31 are oppositely arranged.
Generally speaking, backlight module 32 is different according to light source position, and divides into straight-down negative and side-light type, and in the present embodiment, backlight module 32 illustrates for straight-down negative.Backlight module 32 comprises light source 321, diffuser plate 322, at least one optical diaphragm group 323 and a framework 324.
When light source 321 produces a light L1, it is sequentially by diffuser plate 322 and optical diaphragm group 323, to provide a uniform light L1 to touch panel 31.
In the present embodiment, touch panel 31 is the touch panel 2 described in preceding embodiment, its function, circuit and mode of operation in preceding embodiment describe, do not repeat them here.
In sum, by the first conductive projection, at least one sensing signal that the first touch sensing electrode senses is sent on thin film transistor base plate according to touch panel of the present invention and touch control display device, then sensing signal is sent to touch sensing control module.Compared to known technology, touch sensing control module and driver element can be integrated into thin film transistor base plate by touch panel of the present invention and touch control display device, maybe touch sensing control module and driver element same integrated circuit be can be integrated in, space, Simplified flowsheet reduce the volume of touch panel and touch control display device saved thus.
The foregoing is only illustrative, but not be restricted person.Anyly do not depart from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be contained in appended claim.
Claims (20)
1. a touch panel, comprises:
One thin film transistor base plate,
One colored optical filtering substrates is relative with this thin film transistor base plate and establish;
One pixel electrode, is arranged at the side of this thin film transistor base plate near this colored optical filtering substrates;
At least one first touch sensing electrode, is arranged at the side of this colored optical filtering substrates near this thin film transistor base plate; And
At least one first conductive projection, is arranged between this colored optical filtering substrates and this thin film transistor base plate, and is electrically connected with this pixel electrode on this first touch sensing electrode and this thin film transistor base plate respectively.
2. touch panel as claimed in claim 1, also comprises:
One common voltage electrode, is arranged at the side of this colored optical filtering substrates near this thin film transistor base plate; And
One photoresist layer, is arranged between this common voltage electrode and this colored optical filtering substrates.
3. touch panel as claimed in claim 2, also comprises:
At least one second touch sensing electrode, is oppositely arranged with this first touch sensing electrode; And
One insulation course, is arranged between this first touch sensing electrode and this second touch sensing electrode,
Wherein this first touch sensing electrode and this second touch sensing electrode are all arranged between this common voltage electrode and this colored optical filtering substrates.
4. touch panel as claimed in claim 3, this first touch sensing electrode some of and this second touch sensing electrode are partly overlapping at a projecting direction.
5. touch panel as claimed in claim 2, also comprise at least one second conductive projection, be arranged between this colored optical filtering substrates and this thin film transistor base plate, and be electrically connected with this pixel electrode on this common voltage electrode and this thin film transistor base plate respectively.
6. touch panel as claimed in claim 5, wherein the material of this first conductive projection and this second conductive projection comprise gold, tin, copper and alloy thereof at least one of them.
7. touch panel as claimed in claim 1, also comprises:
One liquid crystal layer, is arranged between this common voltage electrode and this pixel electrode.
8. touch panel as claimed in claim 7, also comprise a driver element, be arranged at this thin film transistor base plate, this driver element produces a drive singal to drive this pixel electrode.
9. touch panel as claimed in claim 1, also comprises a touch sensing control module, is arranged at this thin film transistor base plate, and be electrically connected via this first touch sensing electrode of this first conductive projection and this colored optical filtering substrates.
10. touch panel as claimed in claim 1, also comprises a black matrix", is arranged between this colored optical filtering substrates and this first touch sensing electrode.
11. 1 kinds of touch control display devices, comprise:
One backlight module; And
One touch panel, be oppositely arranged with this backlight module, this touch panel has a thin film transistor base plate, a colored optical filtering substrates, a pixel electrode, at least one first touch sensing electrode and at least one first conductive projection, this colored optical filtering substrates is relative with this thin film transistor base plate and establish, this pixel electrode is arranged at the side of this thin film transistor base plate near this colored optical filtering substrates, and this first touch sensing electrode is arranged at the side of this colored optical filtering substrates near this thin film transistor base plate; This first conductive projection is arranged between this colored optical filtering substrates and this thin film transistor base plate, and is electrically connected with this pixel electrode on this first touch sensing electrode and this thin film transistor base plate respectively.
12. touch control display devices as claimed in claim 11, wherein this touch panel also comprises a sealing, is arranged between this thin film transistor base plate and this colored optical filtering substrates.
13. touch control display devices as claimed in claim 11, wherein this touch panel also comprises:
One common voltage electrode, is arranged at the side of this colored optical filtering substrates near this thin film transistor base plate; And
One photoresist layer, is arranged between this common voltage electrode and this colored optical filtering substrates.
14. touch control display devices as claimed in claim 13, wherein this touch panel also comprises:
At least one second touch sensing electrode, is oppositely arranged with this first touch sensing electrode; And
One insulation course, is arranged between this first touch sensing electrode and this second touch sensing electrode,
Wherein this first touch sensing electrode and this second touch sensing electrode are all arranged between this common voltage electrode and this colored optical filtering substrates.
15. touch control display devices as claimed in claim 13, wherein this touch panel also comprises at least one second conductive projection, be arranged between this colored optical filtering substrates and this thin film transistor base plate, and be electrically connected with this pixel electrode on this common voltage electrode and this thin film transistor base plate respectively.
16. touch control display devices as claimed in claim 13, wherein this touch panel also comprises:
One liquid crystal layer, is arranged between this common voltage electrode and this pixel electrode.
17. touch control display devices as claimed in claim 16, wherein this touch panel also comprises a driver element, is arranged at this thin film transistor base plate, and this driver element produces a drive singal to drive this pixel electrode.
18. touch control display devices as claimed in claim 11, wherein this touch panel also comprises a touch sensing control module, be arranged at this thin film transistor base plate, and be electrically connected via this first touch sensing electrode of this first conductive projection and this colored optical filtering substrates.
19. touch control display devices as claimed in claim 11, wherein this touch panel also comprises a Polarizer, is arranged at the side of this colored optical filtering substrates away from this thin film transistor base plate.
20. touch control display devices as claimed in claim 11, wherein this touch panel also comprises a black matrix", is arranged between this colored optical filtering substrates and this first touch sensing electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010135576.0A CN102193225B (en) | 2010-03-10 | 2010-03-10 | Touch panel and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010135576.0A CN102193225B (en) | 2010-03-10 | 2010-03-10 | Touch panel and touch display device |
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| CN102193225A CN102193225A (en) | 2011-09-21 |
| CN102193225B true CN102193225B (en) | 2015-07-01 |
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| CN201010135576.0A Active CN102193225B (en) | 2010-03-10 | 2010-03-10 | Touch panel and touch display device |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI451315B (en) * | 2011-09-28 | 2014-09-01 | Hannstar Display Corp | In-cell touch panel |
| CN105117073B (en) * | 2015-09-29 | 2019-02-26 | 京东方科技集团股份有限公司 | A kind of touch-control display panel and touch control display apparatus |
| CN106557212A (en) * | 2015-09-30 | 2017-04-05 | 南昌欧菲光科技有限公司 | Touch display unit |
| CN106855764B (en) * | 2015-12-09 | 2023-05-02 | 安徽精卓光显技术有限责任公司 | Touch display device |
| CN105808001B (en) * | 2016-03-10 | 2018-07-17 | 京东方科技集团股份有限公司 | A kind of pressure sensitivity touch screen and display device |
| CN108920006B (en) * | 2018-07-13 | 2021-07-09 | 京东方科技集团股份有限公司 | Color film substrate, display device and preparation method thereof |
| CN109491550B (en) * | 2019-01-03 | 2022-05-10 | 京东方科技集团股份有限公司 | Touch substrate, detection method thereof and display device |
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| CN101266348A (en) * | 2007-03-13 | 2008-09-17 | 精工爱普生株式会社 | Liquid crystal device, electronic apparatus and position identification method |
| CN101339314A (en) * | 2008-08-13 | 2009-01-07 | 友达光电股份有限公司 | Touch control type display panel, photovoltaic device and process for production thereof |
| CN101424817A (en) * | 2008-12-17 | 2009-05-06 | 友达光电股份有限公司 | Method for making colourful filtering touch control substrate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI245252B (en) * | 2002-07-18 | 2005-12-11 | Gigno Technology Co Ltd | LCD and the touch-control method thereof |
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| CN101266348A (en) * | 2007-03-13 | 2008-09-17 | 精工爱普生株式会社 | Liquid crystal device, electronic apparatus and position identification method |
| CN101339314A (en) * | 2008-08-13 | 2009-01-07 | 友达光电股份有限公司 | Touch control type display panel, photovoltaic device and process for production thereof |
| CN101424817A (en) * | 2008-12-17 | 2009-05-06 | 友达光电股份有限公司 | Method for making colourful filtering touch control substrate |
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