CN101441545A - Capacitance type touch control screen and manufacturing method thereof - Google Patents
Capacitance type touch control screen and manufacturing method thereof Download PDFInfo
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- CN101441545A CN101441545A CNA2008102182719A CN200810218271A CN101441545A CN 101441545 A CN101441545 A CN 101441545A CN A2008102182719 A CNA2008102182719 A CN A2008102182719A CN 200810218271 A CN200810218271 A CN 200810218271A CN 101441545 A CN101441545 A CN 101441545A
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Abstract
The invention relates to a capacitive touch screen, which comprises a substrate and an ITO layer, an insulating layer, a circuit layer and a protective layer which are arranged on the same side with the substrate, wherein the ITO layer consists of various mutually parallel first axial traces and various mutually parallel second axial traces which are intersected; the first axial traces and the second axial traces are perpendicular to each other; each first axial trace is separated into various units by various second axial traces which are intersected with the first axial trace; two adjacent units in the same first axial trace are electrically connected through metal bridges; and insulating pieces for insulating the metal bridges and the second axial traces are arranged between the metal bridges and the second axial traces. Because the ITO layer which simultaneously comprises the first axial traces and the second axial traces is arranged on the same side with the substrate, the thickness of the whole film layer is thinned; the structure of the whole touch screen is simplified; the manufacturing cost is reduced; and the transmittance of the touch screen is improved. The invention also discloses a processing method for manufacturing the capacitive touch screen.
Description
[technical field]
The present invention relates to capacitance type touch control screen, more particularly, relate to the manufacture method of a kind of capacitance type touch control screen and this capacitance type touch control screen.
[background technology]
Touch screen has been widely used on the various electronic products.The user can discern and selection operation the shown literal of the display device that is arranged in the touch screen back, symbol, menu etc. by the variation of pointing or the special pens touch screen produces electric signal, realizes the input operation to equipment.
It is several that touch screen is divided into resistance-type, electromagnetic type and condenser type etc. usually, and the principle of work of capacitance type touch control screen is to utilize the induction by current of human body to carry out work.Traditional capacitance type touch control screen is a framework with four layers printed circuit board (PCB), is respectively ground plane, X-axis stitching, Y-axis stitching and circuit layer.It is higher that this capacitance type touch control screen is made cost.
In order to reduce cost of manufacture, capacitance type touch control screen is designed to a two-layer compound glass screen.As shown in Figure 1, 2, 3, both side surface at glass substrate 10 ' respectively is coated with one deck ITO (Indium Tin Oxide, tin indium oxide) 20a ', 20b ', be respectively equipped with X-axis stitching 21 ' and Y-axis stitching 22 ' in this two-layer ITO layer 20a ', 20b ', X-axis stitching 21 ' and Y-axis stitching 22 ' are set to complementary cucurbit shape usually, shown in Fig. 2,3.Insulation course 30a ', 30b ' are set on the ITO layer again, and insulation course 30a ', 30b ' can adopt SiO2.The upside of glass substrate 10 ' is a face, and downside is an air surface.On the insulation course 30a ' of air surface, circuit layer 40 ' is set again, is electrically connected with X-axis stitching 21 ' and Y-axis stitching 22 ' respectively.Protective seam 50 ' is set on circuit layer 40 ' again, and protective seam 50 ' can adopt silicon soil flass.Two stitchings 21 ', 22 ' infall are by glass substrate 10 insulation, and two stitchings 21 ', 22 ' are connected with IC by the electrical wiring around being arranged in the circuit layer.When finger touch was on touch screen, people's bulk electric field, user and touch screen surface formed a coupling capacitance, and for high-frequency current, electric capacity is direct conductor, so finger siphons away a very little electric current from contact point.This electric current flows out the electrode from four jiaos of touch screens respectively, and the electric current of these four electrodes of flowing through is directly proportional with the distance of pointing four jiaos, and controller draws touch point position information by the accurate Calculation to these four current ratios.
Because this capacitance type touch control screen is provided with ITO layer 20a ', 20b ' in glass substrate 10 both sides, make the thickness of whole touch screen increase.Adding man-hour; need to carry out the processing of ITO layer and insulation course in a side of glass substrate earlier; and add man-hour at the opposite side of glass substrate; the rete that need process first side of glass substrate is protected; processing is got up very inconvenient; and be easy to destroy the rete that has processed, cause defect rate higher.
[summary of the invention]
The technical problem to be solved in the present invention is, need bring the problem of processing inconvenience at the both sides of substrate processing rete at existing in the capacitance type touch control screen in the prior art, and a kind of the capacitance type touch control screen that rete is set in substrate one side is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of capacitance type touch control screen, comprise substrate, be arranged on ITO layer, insulation course, circuit layer and the protective seam of substrate homonymy, described ITO layer is made up of second axis traces intersection that many first axle marks that are parallel to each other and Duo Gen are parallel to each other, the vertical setting mutually of the described first axle mark and second axis traces; Each described first axle mark is cut off into a plurality of unit with its many second axis traces that intersect, and Unit two adjacent in the same first axle mark are electrically connected by metal bridge, are provided with the collets that both insulation are opened between the metal bridge and second axis traces.
In capacitance type touch control screen of the present invention, described metal bridge is positioned among the circuit layer.
In capacitance type touch control screen of the present invention, described collets are positioned among the insulation course.
In capacitance type touch control screen of the present invention, the profile that the profile of the described metal bridge and the second axis traces overlapping is insulated piece contains.
Another technical matters that the present invention will solve is, at the structure of above-mentioned capacitance type touch control screen, provides a kind of rete to be arranged on the job operation of the capacitance type touch control screen of substrate one side.
The present invention solves the technical scheme that another technical matters adopts: a kind of job operation of capacitance type touch control screen as mentioned above is provided, may further comprise the steps:
S10, prepared substrate, sputter ITO layer on the processing side of substrate, and process second axis traces and cut off by second axis traces according to the operation of predetermined pattern by applying glue, development, exposure, etching and stripping glue and be the first axle mark of a plurality of unit;
S30, be positioned at the collets that process predetermined pattern on second axis traces in the intersection of the first axle mark and second axis traces;
S50, process circuit layer, and in same first axle mark, process metal bridge between adjacent Unit two according to predetermined pattern;
S70, armor coated.
In the job operation of capacitance type touch control screen of the present invention, cover by the mask plate that is provided with predetermined pattern among the described step S30 and carry out sputter on the ITO layer, make insulating material form described collets in the intersection of the first axle mark and second axis traces.
In the job operation of capacitance type touch control screen of the present invention, on the ITO layer, apply the sensitization insulating material among the described step S30 earlier, after exposing, develop, the figure cover plate forms described collets by being provided with getting of predetermined pattern again.
In the job operation of capacitance type touch control screen of the present invention, described step S50 comprises first sputter circuit layer, processes described metal bridge according to the operation of predetermined pattern by applying glue, exposure, development, etching and stripping glue again.
In the job operation of capacitance type touch control screen of the present invention, cover the enterprising row metal sputter of substrate by the mask plate that is provided with predetermined pattern among the described step S50 and form described metal bridge.
The present invention solves second kind of technical scheme that another technical matters adopts: a kind of job operation of capacitance type touch control screen as mentioned above is provided, may further comprise the steps:
S20, prepared substrate process circuit layer according to predetermined pattern on the processing side of substrate, and process metal bridge in advance between adjacent Unit two in same first axle mark;
S40, be positioned at the collets that process predetermined pattern on the metal bridge in the intersection of the first axle mark and second axis traces;
S60, sputter ITO layer, and process second axis traces and cut off by second axis traces according to the operation of predetermined pattern by applying glue, exposure, development, etching and stripping glue and be the first axle mark of a plurality of unit; The adjacent cells of first axle mark is electrically connected by the metal bridge that processes in advance;
S80, armor coated.
Implement capacitance type touch control screen of the present invention; has following beneficial effect: by the ITO layer that contains the first axle mark and second axis traces simultaneously is set at the substrate homonymy; need ITO layer and both sides be set in the substrate both sides in the prior art relatively and all protective seam need be set; omitted layer protective layer; make the thickness attenuation of whole rete, thereby simplified the structure of whole touch screen greatly and reduced cost of manufacture.And owing to have only one deck ITO layer to make whole touch screen become more transparent, transmittance improves.This means that the brightness and contrast who is positioned at touch screen behind backlight can be improved, required backlight level is lower, corresponding power consumption also can reduce greatly---and make portable type electronic product (as mobile phone, palm PC, bank POS terminating machine etc.) can obtain the longer working time, and save use cost.Implement the job operation of capacitance type touch control screen of the present invention simultaneously; avoided in the prior art when the face of processing second side trouble that need protect face that first side has processed; processing is got up more convenient; simultaneously; owing to omitted one deck ITO layer and protective seam; make operation more simple, consumptive material is lower.
The invention will be further described below in conjunction with drawings and Examples.
[description of drawings]
Fig. 1 is the layer structural representation of capacitance type touch control screen in the prior art;
Fig. 2 is the distribution schematic diagram of X-axis stitching and Y-axis stitching in the ITO layer of capacitance type touch control screen in the prior art;
Fig. 3 is the structural representation of X-axis stitching and Y-axis stitching intersection among Fig. 2;
Fig. 4 is the layer structural representation of capacitance type touch control screen of the present invention;
Fig. 5 is the distribution schematic diagram of first axle mark and second axis traces in the capacitance type touch control screen of the present invention;
Fig. 6 is the structure enlarged drawing of first axle mark and the second axis traces intersection among first embodiment of capacitance type touch control screen of the present invention;
Fig. 7 is the A-A cut-open view of Fig. 6;
Fig. 8 is the schematic flow sheet of first embodiment of the job operation of capacitance type touch control screen of the present invention;
Fig. 9 is the schematic flow sheet of second embodiment of the job operation of capacitance type touch control screen of the present invention;
Figure 10 makes the structural representation of ITO layer in the first axle mark and the second axis traces intersection among first embodiment of job operation of capacitance type touch control screen of the present invention;
The mask plate that Figure 11 is adopted when being ITO layer shown in making Figure 10 is at the pattern of the first axle mark and the second axis traces intersection;
Figure 12 is the structural representation of first axle mark and the second axis traces intersection when making collets among first embodiment of job operation of capacitance type touch control screen of the present invention;
The mask plate that Figure 13 is adopted when being collets shown in making Figure 12 is at the pattern of the first axle mark and the second axis traces intersection;
Figure 14 is the structural representation of first axle mark and the second axis traces intersection when making metal bridge among first embodiment of job operation of capacitance type touch control screen of the present invention;
The mask plate that Figure 15 is adopted when being metal bridge shown in making Figure 14 is at the pattern of the first axle mark and the second axis traces intersection;
Shown in Figure 16 is to adopt capacitance type touch control screen that first embodiment of the job operation of capacitance type touch control screen of the present invention the processed structural representation in the first axle mark and the second axis traces intersection;
Figure 17 is the B-B cut-open view of Figure 16;
Figure 18 is the structure enlarged drawing of first axle mark and the second axis traces intersection among second embodiment of capacitance type touch control screen of the present invention;
Figure 19 is the C-C cut-open view of Figure 18;
Figure 20 is the schematic flow sheet of the 3rd embodiment of the job operation of capacitance type touch control screen of the present invention;
Figure 21 is the schematic flow sheet of the 4th embodiment of the job operation of capacitance type touch control screen of the present invention;
Figure 22 is the structural representation that is positioned at the first axle mark and the second axis traces intersection when making metal bridge among the 3rd embodiment of job operation of capacitance type touch control screen of the present invention;
Figure 23 is the mask plate that adopted when the making metal bridge shown in Figure 22 pattern in the first axle mark and the second axis traces intersection;
Figure 24 is the structural representation that is positioned at the first axle mark and the second axis traces intersection when making collets among the 3rd embodiment of job operation of capacitance type touch control screen of the present invention;
Figure 25 is the mask plate that adopted when the making collets shown in Figure 24 pattern in the first axle mark and the second axis traces intersection;
Figure 26 is the structural representation that is positioned at the first axle mark and the second axis traces intersection when making the ITO layer among the 3rd embodiment of job operation of capacitance type touch control screen of the present invention;
Figure 27 is the mask plate that adopted when the making ITO layer as shown in figure 26 pattern in the first axle mark and the second axis traces intersection;
Figure 28 adopts capacitance type touch control screen that the 3rd embodiment of the job operation of capacitance type touch control screen of the present invention the processed structural representation in the first axle mark and the second axis traces intersection;
Figure 29 is the D-D cut-open view of Figure 28.
[embodiment]
As shown in Figure 4, in first embodiment of capacitance type touch control screen of the present invention, comprise substrate 10, ITO (Indium Tin Oxide, tin indium oxide) layer 20, insulation course 30, circuit layer 40 and protective seam 50.Wherein substrate more than 10 adopts tempered glass etc., and ITO layer 20 is formed by the many first axle marks 21 and second axis traces 22, and insulation course 30 is arranged on the ITO layer 20, and circuit layer 40 is arranged on the insulation course 30.As shown in Figure 5, many first axle marks 21 are arranged in parallel, many second axis traces 22 are arranged in parallel, and first axle mark 21 intersects with second axis traces 22, thereby form ITO layer 20.Shown in Fig. 6,7, at infall, it is a plurality of unit P that first axle mark 21 is cut off by second axis traces 22, two unit P1, P2 adjacent in the same first axle mark 21 are electrically connected by metal bridge 41, metal bridge 41 is preferably disposed in the circuit layer 40, is etched in simultaneously on the insulation course 30 with circuit layer 40.And being provided with collets 31 between the metal bridge 41 and second axis traces 22, these collets 31 are arranged in insulation course 30, second axis traces 22 and metal bridge 41 insulation can be opened.The profile that the profile that metal bridge 41 and second axis traces, 22 laps preferably are set is insulated piece 31 contains, and makes second axis traces 22 be insulated fully with metal bridge 41.Collets 31 can be set be rectangle, the length B of collets 31 is greater than the width d of second axis traces 22 in the intersection, and the width A of collets 31 is greater than the width T of metal bridge.
The first axle mark 21 and second axis traces 22 are electrically connected with circuit layer 40 by the electric connection line 23 of tail end.Like this; the first axle mark 21 and second axis traces 22 are arranged in the same ITO layer 20; ITO layer 20 need be set in the substrate both sides in the prior art relatively also all protective seam 50 need be set in both sides; omitted layer protective layer 50; make the thickness attenuation of whole rete, thereby simplified the structure of whole touch screen greatly and reduced cost of manufacture.And owing to have only one deck ITO layer 20 to make whole touch screen become more transparent, transmittance improves.This means that the brightness and contrast who is positioned at touch screen behind backlight can be improved, required backlight level is lower, corresponding power consumption also can reduce greatly---and make portable type electronic product (as mobile phone, palm PC, bank POS terminating machine etc.) can obtain the longer working time, and save use cost.
Shown in Figure 18,19, in second embodiment of capacitance type touch control screen of the present invention, comprise substrate 10, ITO (Indium Tin Oxide, tin indium oxide) layer 20, insulation course 30, circuit layer 40 and protective seam 50 equally.Different is with first embodiment: the metal bridge 41 in the circuit layer 40 is between insulation course 30 and substrate 10, and ITO layer 20 is between insulation course 30 and protective seam 50.
Shown in Figure 8, in first embodiment of the job operation of capacitance type touch control screen of the present invention, may further comprise the steps: step S10 as shown in Figure 8, elder generation's prepared substrate, be specially the substrate of preparing required specification, be generally tempered glass etc., with the process side face of substrate towards same direction setting; Clean up with the processing side with substrate such as clean-out system, and dry.Again on substrate processing side according to the specification sputter ITO layer of touch screen; On the ITO layer, evenly apply one deck positive photoresist again; The figure cover plate (MASK plate, chromium plate) of getting that utilization is provided with predetermined pattern covers on the ITO layer photoresist is exposed, and in the present embodiment, described predetermined pattern of getting figure reticle plate 24 in the structure of the first axle mark and the second axis traces intersection as shown in figure 11; Utilize developer solution to develop again, the photoresist of exposed portion is shown to fall, stay the glued membrane of not sensitization part, form the glue-line pattern of required ITO part; Utilize etching liquid that the ITO that is not subjected to the photoresist protection on the substrate is removed, form second axis traces that many first axle marks that are parallel to each other and Duo Gen are parallel to each other, and first axle mark and second axis traces are intersected and the first axle mark is cut off with its second axis traces that intersects and is a plurality of unit P, the width that cuts off the district between adjacent two unit P1, the P2 is D, the width of second axis traces in the intersection is d, as shown in figure 10; Carry out the demoulding operation again, remaining photoresist rete is removed, finish the making of ITO layer.
Step S30 makes collets 31 again on the ITO layer that processes as shown in Figure 8.In the present embodiment, the mask plate 34 that meets predetermined pattern by setting covers on the ITO layer, carry out the insulating material sputter again, process collets 31 in the intersection of the first axle mark and second axis traces, this insulating material can be the insulating material of high transmission rates such as SiO2 or A12O3.At this moment, also can process insulation film in other other places that insulation need be set between ITO layer and circuit layer, form insulation course, promptly collets 31 are arranged in insulation course.As shown in figure 13, in the present embodiment, the pattern of the mask plate 34 during the sputter insulating material in the first axle mark and the second axis traces intersection is the rectangle hole.As shown in figure 12, behind the sputter insulating material, on the ITO layer, form the collets 31 identical with predetermined pattern, the length of collets 31 is B, the width of collets 31 is A, wherein, the length B that collets 31 can be set makes these collets 31 just in time cover the intersection of the first axle mark and second axis traces greater than the width b of second axis traces in the intersection.
Step S50 makes metal bridge 41 in the intersection of first axle mark and second line, 22 marks as shown in Figure 8.In the present embodiment, the mask plate 44 that meets predetermined pattern by setting covers on the substrate, carries out metal sputtering again, processes metal bridge 41 in the intersection of the first axle mark and second axis traces.This metal bridge 41 is electrically connected adjacent two unit P1, P2 in the same first axle mark, and is insulated piece 31 insulation between the metal bridge 41 and second axis traces.At this moment, also can process in the circuit layer other and be electrically connected, as first axle mark and the second axis traces tail end with control electric connection line 23 between the IC etc.As shown in figure 14, in the present embodiment, the pattern of the mask plate 44 when carrying out metal sputtering in the first axle mark and the second axis traces intersection is the rectangle hole.As shown in figure 13, after metal sputtering is finished, form the metal bridge 41 that meets predetermined pattern, the length of this metal bridge 41 is S, and width is T.The length S that metal bridge 41 is set is greater than the partition sector width D between first axle mark adjacent two unit P1, the P2, thereby adjacent two unit P1, P2 are electrically connected; The width A of the width T of metal bridge 41 less than collets 31 is set, makes metal bridge 41 can not conduct, thereby metal bridge 41 and the insulation of second axis traces are provided with second axis traces.
Step S70 is armor coated outside the rete of substrate more as shown in Figure 8, finishes the processing of whole capacitor formula touch screen.The structure of the capacitance type touch control screen that forms by this job operation is shown in Figure 16,17, and wherein, the width of the metal bridge 41 and the second axis traces lap is the width T of metal bridge 41, and length is second axis traces width d herein; And the width of collets 31 is A, and length is B, wherein A〉T, B〉d, make the profile of lap be insulated the profile containing of piece 31, thereby realize the reliable insulation between second axis traces and the metal bridge 41.
Fig. 9 shows second embodiment of the job operation of capacitance type touch control screen of the present invention, and different is that to process the method for collets 31 and metal bridge 41 different with first embodiment.Step S30 ' as shown in Figure 9, when making the collets 31 of the first axle mark and the second axis traces intersection, can on the ITO layer of making, apply the sensitization insulating material earlier, this sensitization insulating material has electrical isolation and can carry out the sensitization development and have high transmission rate, as sensitization OC (OC, Over Coat, propylene resin) material such as, its good insulation preformance, transmittance〉98%, be can sensitization negative photoresist; Cover the surface by the figure reticle plate of getting that is provided with predetermined pattern again, the part that needs is provided with collets 31 is exposed, and develops again; At this moment, the glue-line of unexposed portion is removed, and is left and be exposed collets 31 partly, finishes the making of insulation course.Equally, can in other places insulation be set as required, as lap between ITO layer and the circuit layer.
Be among the embodiment of the job operation of above-mentioned capacitance type touch control screen and produce the ITO layer earlier, make collets 31 again, make metal bridge 41 again.Also can make earlier metal bridge 41, again make collets 31, make the ITO layer again.As shown in figure 20, in the 3rd embodiment of the job operation of capacitance type touch control screen of the present invention, may further comprise the steps: step S20 as shown in Figure 20, first prepared substrate cleans up with the processing side with substrate such as clean-out system, and vacuum drying.The mask plate that meets predetermined pattern by setting covers on the substrate, carries out metal sputtering again, processes metal bridge 41.At this moment, also can process other electric connection lines (being the edge cabling) in the circuit layer, as the electric connection line 23 between first axle mark and the second axis traces tail end and the control IC etc.As shown in figure 23, in the present embodiment, the pattern of the mask plate when carrying out metal sputtering in the first axle mark and the second axis traces intersection is the rectangle hole.As shown in figure 22, after metal sputtering is finished, form the metal bridge 41 that meets predetermined pattern.
Step S40 makes collets 31 again on the substrate that processes metal bridge 41 as shown in figure 20.In the present embodiment, the mask plate that meets predetermined pattern by setting covers on the substrate, carries out the insulating material sputter again, and 41 places process collets 31 in metal bridge, and insulating material can be the insulating material of high transmission rates such as SiO2 or Al2O3.At this moment, also can process insulation film in other other places that insulation need be set between ITO layer and circuit layer, form insulation course, promptly collets 31 are arranged in insulation course.As shown in figure 25, in the present embodiment, the pattern of the mask plate during the sputter insulating material at metal bridge 41 places is the rectangle hole.As shown in figure 24, behind the sputter insulating material, on the ITO layer, form the collets 31 identical with predetermined pattern.
Step S60 processes sputter ITO layer on the side at substrate more as shown in figure 20; On the ITO layer, evenly apply one deck positive photoresist; The mask plate that utilization is provided with predetermined pattern covers on the ITO layer photoresist is exposed, and in the present embodiment, the predetermined pattern of described mask plate in the structure at metal bridge 41 places as shown in figure 27; Utilize developer solution to develop again; utilize the ITO etching liquid that the ITO that is not subjected to the photoresist protection on the substrate is removed; utilize stripper that the glue on the shielded ITO is peeled off again; form second axis traces that many first axle marks that are parallel to each other and Duo Gen are parallel to each other; and first axle mark and second axis traces are intersected and the first axle mark is cut off with its second axis traces that intersects and is a plurality of unit P, as shown in figure 26.Be electrically connected by the metal bridge of having made 41 between adjacent two unit P1, the P2, and pass through collets 31 mutually insulateds between the metal bridge 41 and second axis traces, finish the making of ITO layer.
Step S80 is armor coated outside the rete of substrate more as shown in figure 20, finishes the processing of whole capacitor formula touch screen.The structure of the capacitance type touch control screen that forms by this job operation is shown in Figure 28,29, wherein, metal bridge 41 is arranged on the substrate and with the first axle mark of ITO layer and is electrically connected, the width of the metal bridge 41 and the second axis traces lap is the width T of metal bridge 41, and length is second axis traces width d herein; And the width of collets 31 is A, and length is B, wherein A〉T, B〉d, make the profile of lap be insulated the profile containing of piece 31, thereby realize the reliable insulation between second axis traces and the metal bridge 41.
Figure 21 shows the 4th embodiment of the job operation of capacitance type touch control screen of the present invention, and different is that to process the method for collets 31 and metal bridge 41 different with the 3rd embodiment.Step S40 ' as shown in figure 21, when making the collets 31 of the first axle mark and the second axis traces intersection, can as among second embodiment, sensitization insulating material (as sensitization OC material etc.) be coated on the substrate of carrying out metal bridge 41 equally, again by exposure, development, exposed portion is remained, form collets 31, finish the making of insulation course.Equally, can in other places insulation be set as required, as lap between ITO layer and the circuit layer.
Step 60 as shown in figure 21 ', when making metal bridge 41, can adopt the mode that is adopted among second embodiment equally: sputter layer of metal on substrate evenly applies one deck positive photoresist again on metal level, expose again, development, etching, stripping glue, form metal bridge 41.
For easy to process, on a substrate, carry out the processing of polylith capacitance type touch control screen usually, and, specifically adding man-hour, can also make simultaneously the polylith substrate.Being that example is set forth with capacitance type touch control screen of processing on the substrate only in the foregoing description of the job operation of capacitance type touch control screen described in the present invention, is not the restriction to this job operation.Carry out in the process of polylith touch screen at the polylith substrate, the job operation of the capacitance type touch control screen that discloses among the present invention can be implemented equally.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1, a kind of capacitance type touch control screen, comprise substrate, it is characterized in that, also comprise the ITO layer, insulation course, circuit layer and the protective seam that are arranged on the substrate homonymy, described ITO layer is made up of second axis traces intersection that many first axle marks that are parallel to each other and Duo Gen are parallel to each other, the vertical setting mutually of the described first axle mark and second axis traces; Each described first axle mark is cut off into a plurality of unit with its many second axis traces that intersect, and Unit two adjacent in the same first axle mark are electrically connected by metal bridge, are provided with the collets that both insulation are opened between the metal bridge and second axis traces.
2, capacitance type touch control screen according to claim 1 is characterized in that, described metal bridge is positioned among the circuit layer.
3, capacitance type touch control screen according to claim 1 is characterized in that, described collets are positioned among the insulation course.
4, capacitance type touch control screen according to claim 1 is characterized in that, the profile that the profile of the described metal bridge and the second axis traces overlapping is insulated piece contains.
5, a kind of job operation of capacitance type touch control screen according to claim 1 is characterized in that, may further comprise the steps:
S10, prepared substrate, sputter ITO layer on the processing side of substrate, and process second axis traces and cut off by second axis traces according to the operation of predetermined pattern by applying glue, development, exposure, etching and stripping glue and be the first axle mark of a plurality of unit;
S30, be positioned at the collets that process predetermined pattern on second axis traces in the intersection of the first axle mark and second axis traces;
S50, process circuit layer, and in same first axle mark, process metal bridge between adjacent Unit two according to predetermined pattern;
S70, armor coated.
6, according to the job operation of the described capacitance type touch control screen of claim 5, it is characterized in that, cover by the mask plate that is provided with predetermined pattern among the described step S30 and carry out sputter on the ITO layer, make insulating material form described collets in the intersection of the first axle mark and second axis traces.
7, according to the job operation of the described capacitance type touch control screen of claim 5, it is characterized in that, on the ITO layer, apply the sensitization insulating material among the described step S30 earlier, form described collets by being provided with getting of predetermined pattern after the figure cover plate exposes, develops again.
According to the job operation of the described capacitance type touch control screen of claim 5, it is characterized in that 8, described step S50 comprises first sputter circuit layer, process described metal bridge according to the operation of predetermined pattern by applying glue, exposure, development, etching and stripping glue again.
9, according to the job operation of the described capacitance type touch control screen of claim 5, it is characterized in that, cover the enterprising row metal sputter of substrate by the mask plate that is provided with predetermined pattern among the described step S50 and form described metal bridge.
10, a kind of job operation of capacitance type touch control screen according to claim 1 is characterized in that, may further comprise the steps:
S20, prepared substrate process circuit layer according to predetermined pattern on the processing side of substrate, and process metal bridge in advance between adjacent Unit two in same first axle mark;
S40, be positioned at the collets that process predetermined pattern on the metal bridge in the intersection of the first axle mark and second axis traces;
S60, sputter ITO layer, and process second axis traces and cut off by second axis traces according to the operation of predetermined pattern by applying glue, exposure, development, etching and stripping glue and be the first axle mark of a plurality of unit; The adjacent cells of first axle mark is electrically connected by the metal bridge that processes in advance;
S80, armor coated.
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| CNA2008102182719A CN101441545A (en) | 2008-12-08 | 2008-12-08 | Capacitance type touch control screen and manufacturing method thereof |
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| CN101727251A (en) * | 2010-01-22 | 2010-06-09 | 牧东光电（苏州）有限公司 | Bridging type capacitance touch-control device and manufacture method thereof |
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