CN102967972B - Capacitive touch array substrate and manufacturing method thereof and liquid crystal panel - Google Patents
Capacitive touch array substrate and manufacturing method thereof and liquid crystal panel Download PDFInfo
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- CN102967972B CN102967972B CN201210439377.8A CN201210439377A CN102967972B CN 102967972 B CN102967972 B CN 102967972B CN 201210439377 A CN201210439377 A CN 201210439377A CN 102967972 B CN102967972 B CN 102967972B
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Abstract
The invention discloses a capacitive touch array substrate and a manufacturing method thereof and a liquid crystal panel., The capacitive touch array substrate iswhich are used for realizing In-cell touch screens and is used for improving touch screen structures and simplifying process flows. The capacitive touch array substrate comprises a support body, a first sensor and a second sensor, wherein the support body is used for supporting a color film substrate; the bottom end and the top end of the support body are respectively provided with an electrode to form capacitance; one end of the support body, which is near the color-film substrate, is the top end; the other end of the support body is the bottom end; the first sensor is electrically connected with the electrode at the top end of the support body; and the second sensor is electrically connected with the electrode at the bottom end of the support body.
Description
Technical field
The present invention relates to electronic technology and field of liquid crystal display, particularly relate to capacitive touch array substrate and method for making.
Background technology
Relative to touch panel being arranged on original method that liquid crystal panel uses, by research increasing prevalence integrated with liquid crystal panel for touch panel function.The integration of touch panel and liquid crystal panel comprises " In-cell(touch-control structure is in liquid crystal cell) " and " On-cell(touch-control structure is on liquid crystal cell) " isotype.In-cell refers to the method be embedded into by touch panel function in liquid crystal pixel.On-cell refers to the method be embedded into by touch panel function between colored filter substrate and Polarizer.
The liquid crystal panel of On-cell type above and touch panel can reflecting extraneous light line etc. below, cause the visuality reduction under the bright environment such as outdoor.The LCDs of In-cell type does not have this problem.
A kind of In-cell type makes liquid crystal layer generation deformation when pressing touch-screen, changes liquid crystal orientation, thus change capacitance size, with trigger sensor.The program requires higher to liquid crystal layer.In addition, for the ease of changing liquid crystal layer direction, then salient point is increased at liquid crystal layer near the inner side of color film.But the technical requirement increasing salient point is higher, technique is difficult to realize.
Summary of the invention
The embodiment of the present invention provides a kind of capacitive touch array substrate and method for making, for realizing IN-CELL touch-screen, and improves touch screen structure, simplification of flowsheet.
A kind of capacitive touch array substrate, comprising: for supporting the supporter of color membrane substrates, first sensor and the second sensor;
Respectively there is an electrode on the bottom of supporter and top, form electric capacity; Wherein, be top near one end of color membrane substrates, the other end is bottom;
First sensor is electrically connected with the electrode on supporter top;
Second sensor is electrically connected with the electrode of supporter bottom.
Preferably, described supporter is cylindrical spacer.
Preferably, first sensor and the second sensor vertical and non-intersect.
Further, often a linear first sensor or linear second sensor is had between adjacent two sub-pixs.
Further, also comprise: data line and grid line; Linear first sensor is parallel with data line and at same layer, and linear second sensor is parallel with grid line and at same layer.
Preferably, the material of the electrode of bottom and the electrode on top is tin indium oxide ITO.
A kind of capacitance touch liquid crystal panel, comprises above-mentioned capacitive touch array substrate.
Make a method for capacitive touch array substrate, comprise the following steps:
Substrate makes data line and the second sensor, described second sensor reserves the position of supporter;
Above described data line and the second sensor, forming insulation course, this insulation course being reserved with the via hole for connecting described second sensor and supporter;
First sensor is made while making grid line;
Second sensor makes the first electrode;
Deposition one deck resin material, and form supporter by patterning processes;
Supporter makes the second electrode;
On the second electrode and on first sensor, deposit one deck conductive layer, in order to connect the second electrode and first sensor.
The embodiment of the present invention increases by two electrodes on supporter, forms electric capacity, is connected, realizes touch sensible with sensor.This structure need adopt single exposure to etch to supporter when producing, and existing IN cell technology is generally CELL box for a bulky capacitor body, liquid crystal is the medium of the inside, and when cell box thick quilt presses, cell gap and liquid crystal can deflect, liquid crystal deflection, its specific inductive capacity also will send out any change, so cell gap and change in dielectric constant, and what change electric capacity will send out, just can judge touch point, but very complicated circuit and sensor will be had to judge.Therefore, compared with IN-CELL type in prior art, technique is obviously simple, and does not have particular/special requirement to liquid crystal.
Accompanying drawing explanation
Fig. 1 is the sectional side view of capacitive touch array substrate in the embodiment of the present invention;
Fig. 2 is the vertical view of capacitive touch array substrate in the embodiment of the present invention;
Fig. 3 is the sectional side view of supporter in the embodiment of the present invention;
Fig. 4 is method flow diagram in the embodiment of the present invention.
Embodiment
The embodiment of the present invention increases by two electrodes on supporter, forms electric capacity, is connected, realizes touch sensible with sensor.This structure need adopt single exposure to etch to supporter when producing, and compared with IN-CELL type in prior art, technique is obviously simple, and does not have particular/special requirement to liquid crystal.
See Fig. 1 and Fig. 2, in the present embodiment, capacitive touch array substrate comprises: for supporting the supporter 101 of color membrane substrates, first sensor 102 and the second sensor 103.
Respectively there is an electrode on the bottom of supporter 101 and top, form electric capacity, shown in Figure 3; Wherein, be top near one end of color membrane substrates, the other end is bottom.First sensor 102 is electrically connected with the electrode 302 on supporter 101 top.Second sensor 103 is electrically connected with the electrode 301 of supporter 101 bottom.
Preferably, supporter 101 is cylindrical spacer (Post Spacer, PS), it can plate the stronger macromolecular material of pressure-resisting ratio.In the present embodiment, supporter 101 is trapezoidal, between four adjacent sub-pixs.The structure of supporter 101 is shown in Figure 3.After powering on, first sensor 102 responds to the electricity of the second electrode 302, and the electricity of the first electrode 301 responded to by the second sensor 103.The change of capacitance is determined in the change of the electricity sensed by first sensor 102 and the second sensor 103, and then determines to touch.
In the present embodiment, first sensor 102 is vertical and non-intersect with the second sensor 103.In order to determine touch point more accurately, often between adjacent two sub-pixs, there are a linear first sensor 102 or linear second sensor 103.
In the present embodiment, capacitive touch array substrate also comprises: grid line 104 and data line 105.Realize for the ease of technique, linear first sensor 102 is parallel with grid line 104 and at same layer, and linear second sensor 103 is parallel with data line 105 and at same layer.
Preferably, the material of the electrode 301 of bottom and the electrode 302 on top is tin indium oxide (Indium TinOxide, ITO).Ito thin film is a kind of n-type semiconductor, has high conductance, high visible light transmissivity, high mechanical hardness and good chemical stability.Other conductive material is also applicable to the present embodiment.
Capacitive touch array substrate in the present embodiment can be applicable in capacitance touch liquid crystal panel, and then is applied in the electronic product of band touch-screen.
The structure of the present embodiment to capacitive touch array substrate is improved, and provides a kind of process making this capacitive touch array substrate below.
See Fig. 4, the method flow making capacitive touch array substrate in the present embodiment is as follows:
Step 401: make data line 105 on substrate, and make the second sensor 103 with data line 105 parallel arrangement simultaneously; Second sensor 103 reserves the position of supporter 101.
That is, when cloth data line 105, cloth second sensor 103, second sensor 103 is parallel with data line 105, and between adjacent two sub-pixs.By a MASK(mask) operate formation second sensor 103 and data line 105, the position of supporter 101 is reserved when carrying out MASK operation.Preferably, the width of the second sensor 103 is about 5um, and thickness is between 1800-3500 dust.
Step 402: form insulation course 106 above data line 105 and the second sensor 103.Described insulation course 106 is reserved with the via hole for connecting described second sensor 103 and supporter 101.
Step 403: make first sensor 102 while making grid line 104.That is, the cloth first sensor 102 when cloth grid line 104, first sensor 102 is parallel with grid line 104, and between adjacent two sub-pixs.By a MASK(mask) operate formation first sensor 102 and grid line 104.Preferably, the width of first sensor 102 is about 5um, and thickness is between 1800-3500 dust.
In the present embodiment, the bottom of supporter 101 is circular, and longitudinal profile is trapezoidal, therefore reserved via hole on making first sensor 102, this via hole and the via hole position consistency on insulation course 106, so that the follow-up position at this via hole making supporter 101.Add the first electrode 301 in the present embodiment, therefore preferably, the thickness of insulation course 106 is large compared to the thickness of insulation course 106 in the array base palte of prior art, and in the present embodiment, the thickness of insulation course 106 is between 1800-3500 dust.
Step 404: make the first electrode 301 on the second sensor 103.
Step 405: deposition one deck resin material, and form supporter 101 by patterning processes, this supporter 101 is positioned at described via hole position, and directly connects with described first electrode 301.
Step 406: make the second electrode 302 on supporter 101.
Step 407: on the second electrode 302 of supporter 101 and deposit the conductive layer (Mo/Al) of one deck several thousand dust again on first sensor 102, in order to connect the second electrode 302 and first sensor 102.
The embodiment of the present invention increases by two electrodes on supporter, forms electric capacity, is connected, realizes touch sensible with sensor.This structure need adopt single exposure to etch to supporter when producing, and compared with IN-CELL type in prior art, technique is obviously simple, and does not have particular/special requirement to liquid crystal.
In the above-described embodiments, the only manufacture craft of specifically described touch-control part, can know the manufacturing process relating to TFT, no longer describe in detail herein from existing known technology.And above-described embodiment is for top-gate type structure, namely on substrate, first make source-drain electrode layer (comprising data line), then make grid metal level; In actual fabrication process, those skilled in the art also can carry out equivalent expansion to such scheme as required, obtain the scheme being applicable to bottom-gate type configuration.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. a capacitive touch array substrate, is characterized in that, comprising: for supporting the supporter of color membrane substrates, first sensor, the second sensor, data line and grid line;
Respectively there is an electrode on the bottom of supporter and top, form electric capacity; Wherein, be top near one end of color membrane substrates, the other end is bottom;
First sensor is electrically connected with the electrode on supporter top;
Second sensor is electrically connected with the electrode of supporter bottom;
Wherein, described first sensor is parallel with grid line and at same layer, and described second sensor is parallel with data line and at same layer.
2. capacitive touch array substrate as claimed in claim 1, it is characterized in that, described supporter is cylindrical spacer.
3. capacitive touch array substrate as claimed in claim 1, is characterized in that, first sensor and the second sensor vertical and non-intersect.
4. capacitive touch array substrate as claimed in claim 3, is characterized in that often having a linear first sensor or linear second sensor between adjacent two sub-pixs.
5. capacitive touch array substrate as claimed in claim 1, it is characterized in that, the material of the electrode of bottom and the electrode on top is tin indium oxide ITO.
6. a capacitance touch liquid crystal panel, is characterized in that, comprising: the capacitive touch array substrate according to any one of claim 1 to 5.
7. make a method for capacitive touch array substrate, it is characterized in that, comprise the following steps:
Substrate makes data line and the second sensor, described second sensor reserves the position of supporter, wherein, described second sensor is parallel with data line;
Above described data line and the second sensor, forming insulation course, this insulation course being reserved with the via hole for connecting described second sensor and supporter;
While making grid line, make first sensor, wherein, described first sensor is parallel with grid line;
Second sensor makes the first electrode;
Deposition one deck resin material, and form supporter by patterning processes;
Supporter makes the second electrode;
On the second electrode and on first sensor, deposit one deck conductive layer, in order to connect the second electrode and first sensor.
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| CN201210439377.8A CN102967972B (en) | 2012-11-06 | 2012-11-06 | Capacitive touch array substrate and manufacturing method thereof and liquid crystal panel |
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| CN102967972B true CN102967972B (en) | 2015-03-25 |
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| CN104570444A (en) * | 2015-01-12 | 2015-04-29 | 深圳同兴达科技股份有限公司 | Liquid crystal touch display panel |
| CN104880865B (en) * | 2015-06-19 | 2019-03-19 | 武汉华星光电技术有限公司 | Array substrate and preparation method thereof, liquid crystal display panel |
| CN105866995B (en) * | 2016-05-27 | 2019-07-19 | 厦门天马微电子有限公司 | A kind of pressure touch display panel, display device and preparation method |
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| CN101251666A (en) * | 2008-03-27 | 2008-08-27 | 友达光电股份有限公司 | Display apparatus with integration touch panel |
| TW201116889A (en) * | 2009-11-03 | 2011-05-16 | Wintek Corp | Liquid crystal display panel |
| JP2011128208A (en) * | 2009-12-15 | 2011-06-30 | Toppan Printing Co Ltd | Color filter substrate and method for manufacturing the same |
| CN102654681A (en) * | 2012-02-23 | 2012-09-05 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method and display device thereof |
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| KR101347291B1 (en) * | 2006-11-17 | 2014-01-03 | 삼성디스플레이 주식회사 | Flat panel display with a built-in touch sensor, method for driving the same and flat panel display device having the same |
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Patent Citations (4)
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| CN101251666A (en) * | 2008-03-27 | 2008-08-27 | 友达光电股份有限公司 | Display apparatus with integration touch panel |
| TW201116889A (en) * | 2009-11-03 | 2011-05-16 | Wintek Corp | Liquid crystal display panel |
| JP2011128208A (en) * | 2009-12-15 | 2011-06-30 | Toppan Printing Co Ltd | Color filter substrate and method for manufacturing the same |
| CN102654681A (en) * | 2012-02-23 | 2012-09-05 | 京东方科技集团股份有限公司 | Liquid crystal display panel and manufacturing method and display device thereof |
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