CN102520831A - Shielding structure and capacitive touch panel adopting same - Google Patents
Shielding structure and capacitive touch panel adopting same Download PDFInfo
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- CN102520831A CN102520831A CN201110364116XA CN201110364116A CN102520831A CN 102520831 A CN102520831 A CN 102520831A CN 201110364116X A CN201110364116X A CN 201110364116XA CN 201110364116 A CN201110364116 A CN 201110364116A CN 102520831 A CN102520831 A CN 102520831A
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Abstract
The invention relates to the technical field of touch display, in particular to a shielding structure. The shielding structure at least comprises a first shielding layer, a second shielding layer and a first step, the first shielding layer and the second shielding layer are superposed to form the first step, and at least one of the first shielding layer and the second shielding layer is made of non-transparent insulating material. In addition, the invention also provides a capacitive touch panel adopting the shielding structure.
Description
Technical field
The present invention relates to touch-control display technique field, relate in particular to a kind of barrier structure and use the capacitance type touch-control panel of this barrier structure.
Background technology
Contact panel is divided into electric resistance touch-control panel, capacitance type touch-control panel, infrared type contact panel and sound wave type contact panel according to the difference of its touch-control principle.
Resistance-type, infrared type, sound wave type contact panel are because the defective that its principle of work causes is not suitable for the operation interface as hand-held mobile terminal.Capacitance type touch-control panel is widely used in hand-held mobile terminal because its touch-control sensitivity is good, long service life, difficult by advantages such as outer signals interference.
Capacitance type touch-control panel further is divided into surface capacitance type contact panel and projected capacitive touch panel again.The surface capacitance type contact panel is owing to only can realize single-point touch, and therefore, its range of application is not extensive yet.And projected capacitive touch panel is because it can realize that multi-point touch is widely used.
Projected capacitive touch panel comprises substrate, and this substrate is divided into functional areas and perimeter circuit district.On the substrate at this place, functional areas, be provided with X axle sensing electrode layer, Y axle sensing electrode layer.X axle sensing electrode layer and Y axle sensing electrode layer are formed at two opposing surfaces of substrate respectively.X axle sensing electrode layer comprises that many are parallel to each other and X axle induction electrode tandem spaced apart; Y axle sensing electrode layer comprises that many are parallel to each other and Y axle induction electrode tandem spaced apart, and X axle induction electrode tandem and Y axle induction electrode tandem are perpendicular in the projection that is parallel on the plane of substrate.On the substrate at this place, perimeter circuit district, be provided with the many lead-in wires that connect said X axle sensing electrode tandem and Y axle sensing electrode tandem.
The capacitance type touch control screen that industry is used generally includes above-mentioned capacitance type touch-control panel and cover plate.The position in corresponding said perimeter circuit district is provided with barrier bed on this cover plate.This barrier bed is coated on said lid surface by black resin usually and forms, and prevents the outward appearance of the lead effect capacitance type touch control screen of said capacitance type touch-control panel.Cover plate that is provided with barrier bed and the capacitance type touch-control panel that is provided with X axle sensing electrode layer and Y axle sensing electrode layer are fitted, form said capacitance type touch control screen.Yet; Because said barrier bed only is provided with the position on the cover board corresponding said capacitance type touch-control panel perimeter circuit district; Therefore, has one section difference between this this barrier bed and the said lid surface, the time with said cover plate and capacitance type touch-control panel applying; The place is easy to generate bubble in this section difference, influences the outward appearance of said capacitance type touch control screen.In addition; Because said barrier bed is applied by black resin and forms; Easily cause the lid surface locational regional area corresponding by the black resin covering, cause light leak with said perimeter circuit district because of technology or operation reason, or the lead effect outward appearance of said capacitance type touch-control panel.
Summary of the invention
In view of this, be necessary to provide a kind of and prevent light leak, prevent bubble and help promoting the barrier structure of appearance.
In addition, also be necessary to provide a kind of capacitance type touch-control panel that uses above-mentioned barrier structure.
A kind of barrier structure comprises that at least first barrier bed, second barrier bed reach the first step that is overlapped by first barrier bed and second barrier bed, has at least one to be to be processed by material light tight and insulation in this first barrier bed and second barrier bed.
In the said barrier structure provided by the invention, said barrier structure also comprises the 3rd barrier bed, and the 3rd barrier bed is arranged on second barrier bed, and overlaps a second step with said second barrier bed.
In the said barrier structure provided by the invention, said first barrier bed and second barrier bed are processed by material light tight and insulation.
A kind of capacitance type touch-control panel comprises substrate, and this substrate has first surface, and this first surface is divided into first area and second area; This first area and second area are adjacent; And this second area is provided with electrode layer around this first area on this first area, on this second area, be provided with barrier structure and a plurality of leads; Said barrier structure is arranged on the first surface of said substrate, and said a plurality of leads is arranged on the said barrier structure; Said barrier structure comprises first barrier bed, second barrier bed and the first step that is overlapped by first barrier bed and second barrier bed at least.
In the said capacitance type touch-control panel provided by the invention; Said first barrier bed is arranged on the second area of said substrate; Said second barrier bed is arranged on said first barrier bed; And this second barrier bed is covered by the projection on the first surface of said first barrier bed at this substrate in the projection on the first surface of said substrate, and said first, second barrier bed is overlapped, and forms said first step in the side near said first area.
In the said capacitance type touch-control panel provided by the invention, the span of said second barrier bed on the direction of said first area to second area of edge is less than the span of first barrier bed on this direction.
In the said capacitance type touch-control panel provided by the invention, have at least one to process in said first barrier bed and second barrier bed, and said first barrier bed and second barrier bed are identical perpendicular to the thickness on the direction of this substrate by material light tight and insulation.
In the said capacitance type touch-control panel provided by the invention; Said electrode layer comprises many first tandems, many second tandems and a plurality of collets; Said a plurality of leads is connected with second tandem with many first tandems respectively, is parallel to each other between said many first tandems, is parallel to each other between said many second tandems; And these many first tandems and many second tandems intersect to form a plurality of point of crossing each other; At place, this point of crossing, be provided with and be used for collets that first tandem and the insulation of second tandem are opened, said first barrier bed, second barrier bed and said collets are processed in same processing procedure in the lump.
In the said capacitance type touch-control panel provided by the invention, said barrier structure and collets are processed through gray level mask exposure, development, and perhaps, said barrier structure and collets are processed through serigraphy in the lump; Said gray level mask comprises transmission region, semi-transparent zone, light tight zone; The position at second barrier bed place in the position at collets place and the corresponding second area in the corresponding said first area, this light tight zone; The position, both sides of the edge of this corresponding second area in semi-transparent zone, all the other are transmission region.
A kind of capacitance type touch-control panel comprises substrate, cover plate and combines the tack coat of this substrate and cover plate; Said substrate has second surface; This second surface is divided into the 3rd zone and the 4th zone, and the 3rd zone is adjacent with the 4th zone, and the 4th zone is around the 3rd zone; On the 3rd zone, be provided with electrode layer, the 4th zone is provided with a plurality of leads, and the 4th regional correspondence position surface of said cover plate and said substrate is provided with barrier structure, and this barrier structure comprises the 3rd barrier bed, the 4th barrier bed and the 3rd step.
Barrier structure provided by the invention and using in the capacitance type touch-control panel of this barrier structure; Through adopting first barrier bed and this double-layer structure of second barrier bed; And first barrier bed and second barrier bed all adopt material light tight and insulation to process, can effectively avoid light leakage phenomena.In addition,, can effectively prevent capacitance type touch-control panel in the applying process, produce bubble, help promoting the outward appearance of capacitance type touch-control panel in this barrier structure edge through the first step that overlaps by first barrier bed and second barrier bed.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the synoptic diagram of the capacitance type touch-control panel of a preferred embodiments provided by the invention.
Fig. 2 is the schematic cross-section along the A-A direction of capacitance type touch-control panel shown in Figure 1
Fig. 3 is the synoptic diagram of the barrier structure shown in Fig. 2.
Fig. 4 is the method for making schematic flow sheet of a preferred embodiments of the barrier structure shown in Fig. 2.
Fig. 5 is another preferred embodiments capacitance type touch-control panel schematic partial cross-sectional view provided by the invention.
Embodiment
For barrier structure provided by the invention being described and being used the capacitance type touch-control panel of this barrier structure, set forth in detail below in conjunction with Figure of description.
Please consult Fig. 1 and Fig. 2 simultaneously, its be a preferred embodiments provided by the invention capacitance type touch-control panel synoptic diagram and along the schematic cross-section of A-A direction.This capacitance type touch-control panel 100 comprises substrate 110, and this substrate 110 has the first surface (not shown), and this first surface is divided into first area 111 and second area 113, and this second area 113 is adjacent with this first area 111, and around this first area 111.Be formed with electrode layer 120 on this first area 111, this electrode layer 120 comprises that many have a plurality of first modules 121 and are connected 123 first tandem, many with a plurality of first and have a plurality of many second unit 131 and be connected 133 second tandem, a plurality of collets 150 and protective seam (not shown) with a plurality of second.Be formed with barrier structure 170 and a plurality of leads (not shown) on this second area 113.Said barrier structure 170 is formed on the first surface of said substrate 110, and said a plurality of leads is arranged on the said barrier structure 170.Said a plurality of leads is connected with many second tandems with said many first tandems respectively, and not overlapping between a plurality of leads.
In the said electrode layer 120; The a plurality of first modules 121 that are positioned at same row connect 123 connections through being positioned at a plurality of first of these row; Form one first tandem, adjacent two first modules 121 connect 123 through one first and connect, and are parallel to each other between said many first tandems; A plurality of second unit 131 that are positioned at delegation connect 133 connections through being positioned at a plurality of second of this row, form said second tandem, and adjacent two second unit 131 connect 133 through one second and connect, and are parallel to each other between said many second tandems.In this embodiment; The shape of the said first module 121 and second unit 131 is all identical with size; Spacing between any two the adjacent first modules 121 and second unit 131 is identical, and the spacing between any two first tandems is consistent, and the spacing between any two second tandems is consistent; Therefore; Its induced signal intensity that not only can guarantee to produce between each ranks of said capacitance type touch-control panel is consistent, and can effectively reduce capacitance type touch-control panel because of size between the first module 121 and second unit 131 with shape is inconsistent and the inconsistent aberration that causes of spacing each other, acquisition good surface appearance effect.In other embodiments, the size of the said first module 121 and second unit 131 can be different with shape, but have identical size and shape between all first modules 121, have identical size and shape between all second unit 131; Spacing between any two the adjacent first modules 121 and second unit 131 also can be inequality.A plurality of said first module 121 in a plurality of said first tandems is connected 123 with a plurality of first, a plurality of second unit 131 in a plurality of second tandem are processed in same processing procedure by transparent conductive material; In a plurality of said second tandems a plurality of second connect 133 and are also processed by transparent conductive material or metallic conduction material; Therefore; Can make said capacitance type touch-control panel have better appearance, and can increase the versatility of the equipment of making said first tandem and second tandem, in making said first tandem and technology that Unit second, second is connected; Can use same film deposition equipment, save production cost.
Intersect each other between many said first tandems and many said second tandems; Form a plurality of point of crossing 140; And at 140 places, said point of crossing; Many said second tandems are cut apart by many said first tandems and are cut off into a plurality of second unit 131, and two second adjacent unit 131 connect 133 through second and connect in same said second tandem.Said a plurality of collets 150 are corresponding one by one with a plurality of said point of crossing 140, and lay respectively at 140 places, said a plurality of point of crossing, and said collets 150 are arranged at said second connection 133 times, said first and connect on 123.
In this embodiment, said barrier structure 170 sees also Fig. 3, and this barrier structure 170 comprises first barrier bed 171, second barrier bed 172 and the first step 173 that is overlapped by first barrier bed 171 and second barrier bed 172 at least.Have at least one to be to be formed by material light tight and that have insulating property in said first barrier bed 171 and second barrier bed 172, be made by black resin such as first barrier bed 171, perhaps second barrier bed 172 is made by black resin.This first barrier bed 171 is arranged in the above second area 113 of first surface of said substrate 110, and it partially or completely occupies this second area 113.Said second barrier bed 172 is arranged on said first barrier bed 171; And said second barrier bed 172 is covered by said first projection of barrier bed 171 on the first surface of said substrate 110 in the projection on the first surface of said substrate 110; Said first, second barrier bed 171,172 is overlapped; And form said first step 173 in a side at least near said first area; Comparative optimization ground is; Said second barrier bed 172 along the span on the direction of first area 111 to second area 113 less than the span of first barrier bed 171 on this direction; And along on the direction of first area 111 to second area 113, the central point of said first barrier bed 171 overlaps with the central point of said second barrier bed 172, thereby all is formed with first step 173 at said barrier structure 170 near a side of said first area 111 with away from a side of said first area 111.This first step 173 effectively reduces the section difference between the first surface of edge and this substrate 110 of this barrier structure 170, and then can prevent effectively that the edge at this barrier structure 170 produces bubble in the applying process.More preferably, the thickness of this first barrier bed 171 is identical with the thickness of second barrier bed 172, and promptly on the direction perpendicular to said substrate, the thickness of first barrier bed 171 equals the thickness of second barrier bed 172.In other embodiments; This barrier structure 170 can also comprise the 3rd barrier bed (not shown); The 3rd barrier bed is arranged on this second barrier bed 172; Its this second barrier bed 172 is covered by said the 3rd barrier bed 173 near a side of said second area 113, forms the second step (not shown).
In this embodiment; First barrier bed 171 of said barrier structure 170 adopts material coating light tight and that have insulating property to form; This second barrier bed 172 also adopts material coating light tight and that have insulating property to form; Comparative optimization ground is; This barrier structure 170 is processed in the process of making said a plurality of collets 150 in the lump; And said first barrier bed 171 and second barrier bed 172 perpendicular to the thickness on the direction of substrate first surface all less than the thickness of said collets on this direction, and first barrier bed 171 and second barrier bed 172 are equaling the thickness of said collets on this direction perpendicular to the thickness sum on the substrate first surface direction.A kind of preferable method for making of this barrier structure 170 sees also Fig. 4, and it comprises the steps:
Step S201: on the first area of this substrate 110 111 and second area 113, adopt material light tight and that have insulating property to be coated with a ground floor film, and solidify this ground floor film.
Step S203: on this ground floor film, adopt material light tight and that have insulating property to be coated with a second layer film, this second layer film covers this ground floor film fully, and solidifies this second layer film.
Step S205: coating one photoresist layer on this second layer film, this photoresist layer covers this second layer film fully.
Step S207: adopt a gray level mask that the substrate 110 that this is coated with ground floor film, second layer film, photoresist layer is made public.The position that second barrier bed 172 belongs in the position at collets 150 places and the corresponding said second area 113 in the corresponding said first area 111 of this gray level mask is light tight zone; The position at first steps 173 places is semi-transparent zone in its corresponding second area 113, its be that full impregnated light is regional; That is: on the said gray level mask; The position, both sides of the edge of corresponding second area 113 is semi-transparent zone; And other positions are light tight zone on the corresponding second area 113; And this gray level mask to should the first area be light tight zone near first tandem and 140 places, point of crossing between second tandem in 111, and be transmission region to other positions on should first area 111.
Step S209: developing obtains said barrier structure 170 and said a plurality of collets.
In above-mentioned method for making process, successively be coated with ground floor film and second layer film, it can effectively solve and apply the light leak defective that thin film causes.
In other embodiments, also can only be coated with the ground floor film, and adopt said gray level mask to this ground floor film make public, development treatment, obtain said barrier bed structure 170.Even can also be through accurately controlling the span of ground floor film and second layer film; Make the span of the span of second layer film less than the ground floor film; And the ground floor film is not covered by second layer film near the part of said first area 113 1 sides, promptly the ground floor film comes out near the part of said first area 113 1 sides.The method (like serigraphy) of the span through accurate control ground floor film and second layer film; And then do not need this ground floor film and second layer film are carried out exposure-processed; Simplify technology; Perhaps need not use gray level mask that this ground floor film and second layer film are carried out the GTG exposure, save cost of manufacture.
As shown in Figure 5, it is the schematic partial cross-sectional view of the capacitance type touch-control panel of another preferred embodiments provided by the invention.Said capacitance type touch-control panel 300 comprises substrate 310, cover plate 330 and the tack coat 380 that this substrate 310 and cover plate 330 are combined.This substrate 310 has the second surface (not shown), and it is adjacent with the 4th zone 313 that this second surface is divided into 313, the three zones 311, the 311 and the 4th zone, the 3rd zone, and the 4th zone 313 is around the 3rd zone 311.On the 3rd zone 311, be provided with the electrode layer (not shown), on the 4th zone 313, be provided with a plurality of leads 320.This cover plate 330 is provided with barrier structure 370 with the 4th regional correspondence position surface of said substrate 310.This barrier structure 370 comprises the 3rd barrier bed and the 4th barrier bed, and the 3rd barrier bed and the 4th barrier bed overlap one the 3rd step, and this barrier structure 370 is similar with the barrier structure 170 shown in Fig. 2, Fig. 3, at this, and no longer tired stating.
More than be barrier structure provided by the invention and the preferred embodiments of using the capacitance type touch-control panel of this barrier structure; Can not be interpreted as restriction to rights protection scope of the present invention; Those skilled in the art should know, and under the prerequisite that does not break away from the present invention's design, also can do multiple improvement or replacement; These all improvement or replacement all should be in rights protection scopes of the present invention, and rights protection scope promptly of the present invention should be as the criterion with claim.
Claims (10)
1. a barrier structure comprises that at least first barrier bed, second barrier bed reach the first step that is overlapped by first barrier bed and second barrier bed, has at least one to be to be processed by material light tight and insulation in this first barrier bed and second barrier bed.
2. barrier structure as claimed in claim 1 is characterized in that: said barrier structure also comprises the 3rd barrier bed, and the 3rd barrier bed is arranged on second barrier bed, and overlaps a second step with said second barrier bed.
3. barrier structure as claimed in claim 1 is characterized in that: said first barrier bed and second barrier bed are processed by material light tight and insulation.
4. a capacitance type touch-control panel comprises substrate, and this substrate has first surface; This first surface is divided into first area and second area, and this first area and second area are adjacent, and this second area is around this first area; On this first area, be provided with electrode layer; On this second area, be provided with barrier structure and a plurality of leads, said barrier structure is arranged on the first surface of said substrate, and said a plurality of leads is arranged on the said barrier structure; Said barrier structure comprises first barrier bed, second barrier bed and the first step that is overlapped by first barrier bed and second barrier bed at least.
5. capacitance type touch-control panel as claimed in claim 4; It is characterized in that: said first barrier bed is arranged on the second area of said substrate; Said second barrier bed is arranged on said first barrier bed; And this second barrier bed is covered by the projection on the first surface of said first barrier bed at this substrate in the projection on the first surface of said substrate, and said first, second barrier bed is overlapped, and forms said first step in the side near said first area at least.
6. capacitance type touch-control panel as claimed in claim 5 is characterized in that: said second barrier bed along the span on the direction of first area to second area less than the span of first barrier bed on this direction.
7. capacitance type touch-control panel as claimed in claim 5; It is characterized in that: have at least one to process in said first barrier bed and second barrier bed, and said first barrier bed and second barrier bed are identical perpendicular to the thickness on the direction of this substrate by material light tight and insulation.
8. capacitance type touch-control panel as claimed in claim 7; It is characterized in that: said electrode layer comprises many first tandems, many second tandems and a plurality of collets; Said a plurality of leads is connected with second tandem with many first tandems respectively, is parallel to each other between said many first tandems, is parallel to each other between said many second tandems; And these many first tandems and many second tandems intersect to form a plurality of point of crossing each other; At place, this point of crossing, be provided with and be used for collets that first tandem and the insulation of second tandem are opened, said first barrier bed, second barrier bed and said collets are processed in same processing procedure in the lump.
9. capacitance type touch-control panel as claimed in claim 8 is characterized in that: said barrier structure and collets are processed through gray level mask exposure, development, and perhaps, said barrier structure and collets are processed through serigraphy in the lump; Said gray level mask comprises transmission region, semi-transparent zone, light tight zone; The position at second barrier bed place in the position at collets place and the corresponding second area in the corresponding said first area, this light tight zone; The position, both sides of the edge of this corresponding second area in semi-transparent zone, all the other are transmission region; Said first barrier bed and second barrier bed perpendicular to the thickness on the direction of the first surface of said substrate all less than the thickness of said collets, and said first barrier bed and second barrier bed are equaling the thickness of said collets on this direction perpendicular to the thickness sum on the direction of the first surface of substrate.
10. capacitance type touch-control panel; Comprise substrate, cover plate and combine the tack coat of this substrate and cover plate, said substrate has second surface, and this second surface is divided into the 3rd zone and the 4th zone; The 3rd zone is adjacent with the 4th zone, and the 4th zone is around the 3rd zone; On the 3rd zone, be provided with electrode layer, the 4th zone is provided with a plurality of leads, and the 4th regional correspondence position surface of said cover plate and said substrate is provided with barrier structure, and this barrier structure comprises the 3rd barrier bed, the 4th barrier bed and the 3rd step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110364116.XA CN102520831B (en) | 2011-11-16 | 2011-11-16 | Barrier structure and use the capacitance type touch-control panel of this barrier structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110364116.XA CN102520831B (en) | 2011-11-16 | 2011-11-16 | Barrier structure and use the capacitance type touch-control panel of this barrier structure |
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| CN102520831A true CN102520831A (en) | 2012-06-27 |
| CN102520831B CN102520831B (en) | 2016-01-20 |
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Also Published As
| Publication number | Publication date |
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| CN102520831B (en) | 2016-01-20 |
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