CN102915147A - Touch sensing element, touch panel and manufacturing method of touch panel - Google Patents
Touch sensing element, touch panel and manufacturing method of touch panel Download PDFInfo
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- CN102915147A CN102915147A CN2012103458883A CN201210345888A CN102915147A CN 102915147 A CN102915147 A CN 102915147A CN 2012103458883 A CN2012103458883 A CN 2012103458883A CN 201210345888 A CN201210345888 A CN 201210345888A CN 102915147 A CN102915147 A CN 102915147A
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- insulation course
- conducting
- electrode blocks
- touch sensible
- sensible element
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
Abstract
The invention relates to the technical field of a touch screen, and particularly relates to a touch sensing element, a touch panel and a manufacturing method of the touch panel for improving the quality of the touch sensing element. The invention discloses the touch sensing element. The touch sensing element comprises a plurality of electrode blocks arranged in an array way, wherein two adjacent electrode blocks are connected through a conductive film in a direction of a row direction and a column direction of the array; two adjacent electrode blocks are connected through at least two conductive bridges in the other direction, and the conductive film and the conductive bridges are separated by an insulating layer. Therefore, the probability that the two adjacent electrode blocks cannot be conducted due to electrostatic discharge can be reduced because at least two conductive bridges are connected with the two adjacent electrode blocks, thus, the quality of the touch sensing element is improved. In addition, the invention also discloses the touch panel with the touch sensing element, and the manufacturing method of the touch panel.
Description
Technical field
The present invention relates to the touch screen technology field, particularly the manufacture method of a kind of touch sensible element, touch panel and touch panel.
Background technology
At present, in the touch panel manufacture process, production, test, carrying all inevitably can produce static, although also adopted the measure of some protection generation of static electricity, but have the static of generation of static electricity or generation in time not discharge, and cause constantly accumulation of electrostatic charge, until being released or reach enough intensity, static can puncture ambient substance, this phenomenon is called ESD(Electro-Static discharge, and static discharges) phenomenon.
And the touch sensible element is the critical component of touch panel, and its quality directly affects the performance of contact panel.As shown in Figure 1a, existing touch sensible element comprises a plurality of ITO(Indium TinOxide that are in array-like arrangement, tin indium oxide) electrode block, wherein, on the line direction of array, be connected by an ITO conductive film 130 between the A direction among Fig. 1 a namely, adjacent ITO electrode block 100 and ITO electrode block 101; On the column direction of array, the B direction among Fig. 1 a namely is connected by an ITO conducting bridge 120 between adjacent ITO electrode block 110 and the ITO electrode block 111; Separate by an insulation course 140 between the conductive film 130 that the position is relative and the conducting bridge 120.
In making touch sensible element process, the static that produce, test, carrying all inevitably produces, and the idioelectric glass substrate of the general employing of the carrier of touch sensible element, be unfavorable for that static discharges, the electrostatic charge that produces can constantly increase, when the electrostatic charge of accumulation reaches can puncture ambient substance the time, on the touch sensible element, the static release phenomenon will occur, and the position that static discharges is generally at wedge angle or contact point place.Shown in Fig. 1 b, draw the position that poor part represents that static discharges among the figure, the static of release can puncture the end at ITO bridge 120, makes adjacent ITO electrode block 110 and the ITO electrode block 111 can not conducting, thereby affects the quality of touch sensible element.
Summary of the invention
The object of the present invention is to provide a kind of touch sensible element, be used for improving the quality of touch sensible element.
To achieve these goals, the invention provides following technical scheme:
A kind of touch sensible element comprises a plurality of electrode blocks that are in array-like arrangement, in the line direction and column direction of array, wherein on the direction, two adjacent electrode blocks connect by a conductive film, on another direction, two adjacent electrode blocks connect by at least two conducting bridges, and separate by an insulation course between described conductive film and the described conducting bridge.
Preferably, the set-up mode of described at least two conducting bridges is for be arrangeding in parallel, and/or, arranged in a crossed manner.
Preferably, at least two conducting bridges of adjacent two electrode blocks of described connection, the middle part of each conducting bridge is electrically connected.
Preferably, at least two conducting bridges of adjacent two electrode blocks of described connection are the conducting bridge of two intermediate interdigitated and electric connection.
Preferably, described electrode block be shaped as square or rhombus, preferably, described electrode block be shaped as square; And be positioned at the diagonal line of each electrode block of delegation or same row point-blank, connect at least two conducting bridges and the conductive film of two adjacent electrode blocks, be connected across on two relative angles of two adjacent electrode pieces.
The present invention also provides a kind of touch panel simultaneously, comprising: protective seam substrate, frame, the first insulation course, the 3rd insulation course, and the touch sensible element with above-mentioned technical characterictic; Wherein,
Described frame, described the first insulation course are successively set on the described protective seam substrate;
Described touch sensible element is arranged on the first insulation course;
Described the 3rd insulation course is arranged on the described touch sensible element.
In addition, the present invention also provides a kind of touch panel manufacture method simultaneously, comprising:
Step 1 applies one deck black material in the protective seam substrate periphery and forms dark border;
A plurality of ITO conducting bridge modules that array-like is arranged are exposed, formed after the etching to step 4 to metal level and tin indium oxide ITO layer;
Step 8 applies the layer of transparent resin bed at the second insulation course and ITO electrode block array, forms the 3rd insulation course.
From technique scheme as can be known, in touch sensible element of the present invention, on the line direction or column direction of array, adopt two or more conducting bridge to connect two adjacent electrode blocks, being connected two adjacent electrode blocks with conducting bridge of existing employing compares, can significantly reduce because static discharges and cause the probability that two adjacent electrode blocks can not conducting, thereby improve the quality of touch sensible element.
Description of drawings
Fig. 1 a is the structural representation of touch sensible element in the prior art;
Fig. 1 b is the partial enlarged drawing of touch sensible element in the prior art;
Fig. 2 a is the structural representation of touch sensible element in the embodiment of the invention one;
Fig. 2 b is the partial enlarged drawing of touch sensible element in the embodiment of the invention one;
Fig. 3 a is the structural representation of touch sensible element in the embodiment of the invention two;
Fig. 3 b is the partial enlarged drawing of touch sensible element in the embodiment of the invention two;
Fig. 4 is the structural representation of touch panel in the embodiment of the invention;
Fig. 5 is the making process flow diagram of touch panel in the embodiment of the invention.
Embodiment
Existing touch sensible element comprises a plurality of ITO electrode blocks that are in array-like arrangement, and wherein, on the line direction of array, two adjacent ITO electrode blocks connect by an ITO conductive film; On the column direction of array, two adjacent ITO electrode blocks connect by an ITO conducting bridge; Separate by collets between each conductive film that the position is relative and each conducting bridge.In making touch sensible element process, the static that produce, test, carrying all inevitably produces, and the idioelectric glass substrate of the general employing of the carrier of touch sensible element, be unfavorable for that static discharges, the electrostatic charge that produces can constantly increase, and when the electrostatic charge of accumulation reaches can puncture ambient substance the time, the static of release can puncture an end of ITO bridge, cause two adjacent electrode blocks can not conducting, thereby affect the quality of touch sensible element.
In view of this, the invention provides a kind of touch sensible element, comprise: a plurality of electrode blocks that are in array-like arrangement, in the line direction and column direction of array, wherein on the direction, two adjacent electrode blocks connect by a conductive film, on another direction, two adjacent electrode blocks connect by at least two conducting bridges, and between the relative conductive film in position and at least two conducting bridges by a collets insulation.Connect two adjacent electrode blocks by at least two conducting bridges.Can reduce like this because static discharges and cause the probability that two adjacent electrode blocks can not conducting, thereby improve the quality of touch sensible element.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description the embodiment of the invention is described in detail.
Embodiment one, shown in Fig. 2 a, this touch sensible element comprises a plurality of electrode blocks that are in array-like arrangement, on the line direction of array, two adjacent electrode blocks connect by a conductive film, on the column direction of array, two adjacent electrode blocks connect by at least two conducting bridges, and separate by an insulation course between described conductive film and the described conducting bridge.In other words, the touch sensible element comprises the electrode block array; Wherein, on the line direction of array, namely on the A direction shown in Fig. 2 a, two adjacent electrode blocks connect by a conductive film; On the column direction of array, namely on the B direction shown in Fig. 2 a, two adjacent electrode blocks connect by two parallel conducting bridges; Insulation course is between conductive film and conducting bridge.Above-mentioned conducting bridge is ITO bridge or metal bridge,
Particularly, on the line direction on adjacent two electrode blocks and the column direction adjacent two electrode blocks as example, shown in Fig. 2 a, on the line direction of array, electrode block 200 and electrode block 201 are foursquare electrode block, and the diagonal line of two electrode blocks point-blank; Connect by a conductive film 230 between the electrode block 200 that the position is adjacent and the electrode block 201, that is to say that a conductive film 230 of connecting electrode piece 200 and electrode block 201 is connected across on two relative angles of these two electrode blocks.On the column direction of array, electrode block 210 and electrode block 211 are foursquare electrode block, and the diagonal line of two electrode blocks point-blank; Are connected connection with conducting bridge by two conducting bridges that be arranged in parallel 220 between the electrode block 210 that the position is adjacent and the electrode block 211, that is to say, two conducting bridges 220 of connecting electrode piece 210 and electrode block 211 and conducting bridge 221 are connected across on two relative angles of these two electrode blocks; Preferably, the middle part of conducting bridge 220 and conducting bridge 221 is electrically connected.
When having the static release phenomenon to produce on the touch sensible element, because the static release phenomenon generally appears at the wedge angle position of a conductor or the contact position of two conductors, so on the touch sensible element, generally appear at the contact position of conducting bridge and electrode block, namely bring out existing static release phenomenon at one of conducting bridge 220 or conducting bridge 221.Shown in Fig. 2 b, when the static release phenomenon appears at an end of conducting bridge 220, the end that the electrostatic breakdown conducting bridge 220 of release is connected with electrode block 210, or an other end of conducting bridge 220, the i.e. end that is connected with electrode block 211 of conducting bridge 220.That is to say, can not pass through conducting bridge 220 conductings between the electrode block 210 that the position is adjacent and the electrode block 211, but can pass through conducting bridge 221 conductings.
From embodiment one as can be known, on the column direction of array, adopt two parallel conducting bridges to connect two adjacent electrode blocks, being connected two adjacent electrode blocks with conducting bridge of available technology adopting compares, because discharging, static cause the probability that two adjacent electrode blocks can not conducting obviously to reduce, that is to say, both made when wherein a conducting bridge disconnects with electrode block because of static release, also have two electrode blocks that the conducting bridge conducting is adjacent, thereby improved the quality of touch sensible element.In addition, when the touch sensible element does not have static or electrostatic charge to be not enough to the tie point of disruptive conduction bridge and electrode block, in this case, because adopting two conducting bridges to connect two adjacent electrode blocks, only have a conducting bridge to be connected two adjacent electrode blocks to compare with existing, can reduce the resistance at conducting bridge place, thereby improve the performance of touch sensible element.
Embodiment two, in above-described embodiment one, on the column direction of array, adopt two parallel conducting bridges to connect two adjacent electrode blocks, but when an end of every conducting bridge all disconnects with the electrode block that is connected because of static release, to cause two adjacent electrode blocks can not conducting, thereby affect the quality of touch sensible element.Therefore, in embodiment two, adopt the conducting bridge of two intersections to connect two adjacent electrode blocks.
Particularly, shown in Fig. 3 a, this touch sensible element comprises a plurality of electrode blocks that are in array-like arrangement, on the line direction of array, two adjacent electrode blocks connect by a conductive film, on the column direction of array, two adjacent electrode blocks connect by at least two conducting bridges, and separate by an insulation course between described conductive film and the described conducting bridge.In other words, the touch sensible element comprises the electrode block array; Wherein, on the line direction of array, namely on the A direction shown in Fig. 3 a, two adjacent electrode blocks connect by a conductive film; On the column direction of array, namely on the B direction shown in Fig. 3 a, two adjacent electrode blocks connect by two parallel conducting bridges; Insulation course is between conductive film and conducting bridge.It is worth mentioning that described conducting bridge is ITO bridge or metal bridge.
The below on the line direction on adjacent two electrode blocks and the column direction adjacent two electrode blocks, shown in Fig. 3 a, at the row of array upwards, connect by conductive film 330 between the electrode block 300 that the position is adjacent and the electrode block 301 as example; On the column direction of array, are connected connections with conducting bridge by two conducting bridges arranged in a crossed manner 320 between the electrode block 310 that the position is adjacent and the electrode block 311, in other words, conducting bridge 320 and the setting of conducting bridge 321 " X " shape; Separate by 340 insulation of an insulation course between conductive film 330 and conducting bridge 320 and the conducting bridge 321, that is to say that insulation course 340 is between conductive film 330 and conducting bridge 320 and conducting bridge 321.
When having the static release phenomenon to produce on the touch sensible element, shown in Fig. 3 b, when an end of conducting bridge 320 causes with the electrode block 310 that is connected or electrode block 311 disconnection because of the static release phenomenon, electrode block 310 and electrode block 311 can pass through conducting bridge 321 conductings, can not affect the use of touch sensible element; In like manner, when an end of conducting bridge 321 caused with the electrode block 310 that is connected or electrode block 311 disconnection because of the static release phenomenon, electrode block 310 and electrode block 311 can pass through conducting bridge 320 conductings, can not affect the use of touch sensible element; And when conducting bridge 320, conducting bridge 321 not when the end of the same side disconnects with the electrode block 310 that is connected or electrode block 311 simultaneously because the static release phenomenon causes, what electrode block 310 and electrode block 311 also can be by conducting bridges 320 does not disconnect the part conducting that side part and conducting bridge 321 do not disconnect side part and conducting bridge 320 and conducting bridge 321 intersections.
Therefore, present embodiment adopts the conducting bridge of two intersections to connect two adjacent electrode blocks, being connected two adjacent electrode blocks with conducting bridge of available technology adopting compares, cause the probability that two adjacent electrode blocks can not conducting obviously to reduce because static discharges, thereby to have improved the quality of touch sensible element.In addition, when the touch sensible element does not have static or electrostatic charge to be not enough to puncture the tie point of bridge and electrode block, in this case, because adopting two bridgings to connect adjacent electrode block, only have the logical adjacent electrode block of a bridging to compare with existing, can reduce the resistance at bridge place, thereby improve the performance of touch sensible element.
In above-mentioned two embodiment, be to connect two adjacent electrode blocks as example take two conducting bridges, but be not limited to therewith, also can adopt the conducting bridge more than two to connect two adjacent electrode blocks, the set-up mode of described at least two conducting bridges is for be arrangeding in parallel, and/or, arranged in a crossed manner; Preferably, at least two conducting bridges of adjacent two electrode blocks of described connection, the middle part of each conducting bridge is electrically connected; Further, at least two conducting bridges of adjacent two electrode blocks of described connection are the conducting bridge of two intermediate interdigitated and electric connection.For example, adopt three conducting bridges to connect two adjacent electrode blocks, article three, the set-up mode of conducting bridge comprises: three be arranged in parallel, article three, conducting bridge is arranged in a crossed manner, wherein two conducting bridges be arranged in parallel, a remaining conducting bridge intersects with described two conducting bridges that be arranged in parallel, or wherein arranged in a crossed manner, the remaining conducting bridge of two conducting bridges is neither crossing or parallel with two conducting bridges arranged in a crossed manner; Further, the middle part of each conducting bridge is electrically connected, and in other words, two adjacent electrode blocks connect by at least two conducting bridges, and wherein, the set-up mode of at least two conducting bridges is for be arrangeding in parallel, and/or, arranged in a crossed manner.Can further reduce like this because the static release phenomenon causes the probability that two adjacent electrode blocks can not conducting, improve the quality of touch sensible element; Because adopting many conducting bridges, can also reduce the resistance at conducting bridge place simultaneously, thereby improve the performance of touch sensible element.
In sum, touch sensible element of the present invention adopts two or more conducting bridge to connect two adjacent electrode blocks, being connected two adjacent electrode blocks with conducting bridge of available technology adopting compares, can obviously reduce because static discharges and cause the probability that two adjacent electrode blocks can not conducting, thereby improve the quality of touch sensible element.In addition, also can connect two adjacent electrode blocks because adopting at least two conducting bridges, can reduce the resistance at conducting bridge place, thereby improve the performance of touch sensible element.
The present invention also provides a kind of touch panel simultaneously, and as shown in Figure 4, this touch panel comprises: protective seam substrate 10, frame 20, the first insulation course 30, the 3rd insulation course 50, and the touch sensible element 40 with above-mentioned technical characterictic.Wherein, frame 20, the first insulation course 30 are successively set on the protective seam substrate 10; Touch sensible element 40 is arranged on the first insulation course 20; The 3rd insulation course 50 is arranged on the touch sensible element 40.
Preferably, the material of the first insulation course 30 and the 3rd insulation course 50 is OC(OverCoating, protective finish) resin material.
It is worth mentioning that this touch panel is compared with existing touch panel, reduced one deck and be positioned at transparency carrier on the 3rd insulation course 50, thus attenuate the thickness of this touch panel.As this touch panel and TFT-LCD(Thin Film Transistor-Liquid Crystal Display) when being installed together, the 3rd insulation course 50 fits together with TFT-LCD, and protective seam substrate 10 is in outermost layer.
As shown in Figure 5, the present invention also provides a kind of manufacture method of touch panel simultaneously, comprising:
Step 1 applies one deck black material in the protective seam substrate periphery and forms dark border; Be used for blocking arranging of marginal ray and metal wire.
A plurality of ITO conducting bridge modules that array-like is arranged are exposed, formed after the etching to step 4 to metal level and tin indium oxide ITO layer;
Step 8 applies the layer of transparent resin bed at the second insulation course and ITO electrode block array, forms the 3rd insulation course 50.
The process of above-mentioned steps 3 ~ step 7 is for making the process of touch sensible element 40, touch sensible element 40 comprises a plurality of ITO electrode blocks that are in array-like arrangement, wherein, go up in the row direction, two adjacent ITO electrode blocks connect by ito thin film, and with contact panel in corresponding sweep trace (Sensor line) connect; On column direction, two adjacent ITO electrode blocks connect by two ITO conducting bridges, and with contact panel in corresponding sweep trace (Sensor line) connection.The place that ITO electrode block on both direction intersects, the ITO electrode block of going up in the row direction produces mutual capacitance with adjacent between the ITO electrode block on the column direction, and when touching this touch panel, mutual capacitance meeting minimizing just can be judged the coordinate of touch point.
From foregoing description as can be known, touch sensible element in this touch panel, because the conducting bridge that adopts two or more connects two adjacent electrode blocks, can obviously reduce because static discharges and cause the probability that two adjacent electrode blocks can not conducting, simultaneously also reduce the resistance at conducting bridge place, thereby improved the performance of touch panel.In addition, this touch panel has also reduced one deck glass substrate, can reduce the thickness of touch panel.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. touch sensible element, comprise a plurality of electrode blocks that are in array-like arrangement, it is characterized in that, in the line direction and column direction of array, wherein on the direction, two adjacent electrode blocks connect by a conductive film, on another direction, two adjacent electrode blocks connect by at least two conducting bridges, and separate by an insulation course between described conductive film and the described conducting bridge.
2. touch sensible element as claimed in claim 1 is characterized in that, the set-up mode of at least two conducting bridges of adjacent two electrode blocks of described connection is for be arrangeding in parallel, and/or, arranged in a crossed manner.
3. touch sensible element as claimed in claim 2 is characterized in that, at least two conducting bridges of adjacent two electrode blocks of described connection, the middle part of each conducting bridge is electrically connected.
4. touch sensible element as claimed in claim 3 is characterized in that, at least two conducting bridges of adjacent two electrode blocks of described connection are the conducting bridge of two intermediate interdigitated and electric connection.
5. such as the arbitrary described touch sensible element of claim 1-4, it is characterized in that, described electrode block be shaped as square or rhombus, and be positioned at the diagonal line of each electrode block of delegation or same row point-blank, at least two conducting bridges and the conductive film that connect two adjacent electrode blocks are connected across on two relative angles of two adjacent electrode pieces.
6. touch sensible element as claimed in claim 5 is characterized in that, described conducting bridge is tin indium oxide ITO bridge.
7. a touch panel is characterized in that, comprising: the protective seam substrate, and frame, the first insulation course, the 3rd insulation course, and such as the arbitrary described touch sensible element of claim 1-6; Wherein,
Described frame, described the first insulation course are successively set on the described protective seam substrate;
Described touch sensible element is arranged on the first insulation course;
Described the 3rd insulation course is arranged on the described touch sensible element.
8. a touch panel manufacture method is characterized in that, comprising:
Step 1 applies one deck black material in the protective seam substrate periphery and forms dark border;
Step 2 forms the first insulation course at protective seam substrate and dark border coating layer of transparent resin material;
Step 3, successively depositing metal layers and tin indium oxide ITO layer on the first insulation course;
A plurality of ITO conducting bridge modules that array-like is arranged are exposed, formed after the etching to step 4 to metal level and tin indium oxide ITO layer;
Step 5 forms the second insulation course at the first insulation course and a plurality of ITO conducting bridge module coating layer of transparent resin material;
Step 6 is exposed, behind the borehole, is formed a plurality of respectively via holes corresponding with the ITO conducting bridge the second insulation course;
Step 7 at the second insulation course deposition ITO layer, forms ITO electrode block array after overexposure, etching;
Step 8 applies the layer of transparent resin bed at the second insulation course and ITO electrode block array, forms the 3rd insulation course.
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| CN2012103458883A CN102915147A (en) | 2012-09-17 | 2012-09-17 | Touch sensing element, touch panel and manufacturing method of touch panel |
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