CN204242156U - Monolithic capacitive touch screen - Google Patents
Monolithic capacitive touch screen Download PDFInfo
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- CN204242156U CN204242156U CN201420754468.5U CN201420754468U CN204242156U CN 204242156 U CN204242156 U CN 204242156U CN 201420754468 U CN201420754468 U CN 201420754468U CN 204242156 U CN204242156 U CN 204242156U
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Abstract
A kind of monolithic capacitive touch screen, comprise transparency carrier and shielding layer, the inside surface of described shielding layer is connected with described transparency carrier, the lid bottom that optical density is greater than described shielding layer optical density is formed at the outside surface of described shielding layer, spacing is there is in the outer ledge of described shielding layer apart from surrounding's side of described transparency carrier, enhancement layer is covered what be provided with near the position, inside edge of described shielding layer that optical density is greater than shielding layer optical density, the described enhancement layer that covers is arranged around the inner peripheral of described shielding layer, and described in cover a part for enhancement layer between shielding layer and described transparency carrier, and another part stretches out from the inside edge of described shielding layer.Side of the present utility model can not produce side etching phenomenon, and the good shading effect of shielding layer of the present utility model, can avoid, at inside edge place, light leakage phenomena occurs.
Description
Technical field
The present invention relates to a kind of touch technology, especially a kind of monolithic capacitive touch screen.
Background technology
Along with the fast development of the information industry such as infotech, wireless communication technique, the demand of people to electronic product grows with each passing day, in order to make the more convenient people's operation of product and use, many electronic products have started to adopt touch-screen as input media, touch-screen is as a kind of brand-new man-machine communication's mode, because of it, there is lively operation-interface intuitively and meet the use habit of human body, in people's live and work, applying more and more extensive.
Traditional capacitance touch screen generally includes cover sheet and touch-control sensing module, and it is bonding that described cover sheet and touch-control sensing module pass through OCA glue, and the capacitance touch screen thickness of this kind of version is thicker and light transmission is poor; And one chip capacitive touch screen is by being directly coated with electrically conducting transparent line layer on the transparent substrate; realize the integrated of cover sheet and touch-control sensing module; eliminate at least one sheet glass or film; decrease laminating number of times; its thickness is thinner; transmittance is higher, progressively becomes one of capacitance touch screen Developing mainstream.
See Fig. 1, traditional monolithic capacitive touch screen generally includes transparency carrier 1 ', the periphery of described transparency carrier is provided with shielding layer 11 ', this shielding layer 11 ' is mainly in order to hide the line layer being positioned at transparency carrier periphery, have an X-rayed in outward to avoid the line layer of transparency carrier periphery by transparency carrier, and then affect one chip touch-screen look sight effect, in Fig. 1, described shielding layer 11 ' inboard portion is the visible area 12 ' of touch-screen, and it is in order to provide operation interface to export-oriented user and display respective image; When processing and fabricating monolithic capacitive touch screen, because the optical density of black or grey material ratio white or other colored materials is higher, in processing and manufacturing process, the technique of the material that optical density is relatively high more easily controls, so the shielding layer 11 ' of common monolithic capacitive touch screen is set to black or grey usually.
Along with end user is to the diversified demand of touch-screen outward appearance, in recent years, the shielding layer of capacitance touch screen engenders other color, as the capacitance touch screen of white, the color such as golden or red; Due to the photoresistance of white, the color such as golden or red or the optical density of ink material lower, when adopting the photoresistance or printing ink to manufacture shielding layer that these optical density are lower, in order to reach good shaded effect, it is thicker that the thickness of shielding layer is processed usually, there is following problem in the shielding layer that this thickness is thicker: when (1) makes line layer on the shielding layer of this kind of version, because shielding layer thickness is thicker, line layer is very easily caused to occur broken string phenomenon; (2) optical density due to shielding layer is lower, and as technology controlling and process is bad, the touch-screen completed is after fitting with LCM, and the light that LCM sends, is easy to occur light leakage phenomena at shielding layer; Especially at the inside edge place of shielding layer, because of technological reason, its thickness is relatively thin, is easy to light light leakage phenomena occurs; In addition, when described shielding layer outside surface makes optical density relatively large lid bottom, the respective material produced because making described lid bottom is residual to be easy to outside transparency carrier edge is revealed in, and then affects the appearance of whole touch-screen product; (3) when carrying out secondary hardening to described transparent base, because the difference in height existed between shielding layer and transparency carrier is larger, when attaching antiacid film on the transparent substrate, what cause antiacid film and transparency carrier to attach is not very tight, and then in transparency carrier strengthening process, hydrofluoric acid permeate causes side etching phenomenon to transparency carrier side to transparency carrier; Based on the problem existing for above touch-screen, be necessary to make improvement further to the monolithic capacitive touch screen of this kind of structure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of monolithic capacitive touch screen, and the side of this monolithic capacitive touch screen can not produce side etching phenomenon, and the good shading effect of shielding layer of the present invention, light leakage phenomena can not be there is at inside edge place.
For solving the problems of the technologies described above, the present invention adopts following technical proposals: this monolithic capacitive touch screen, the shielding layer comprising transparency carrier and arrange around described transparency carrier periphery, the inside surface of described shielding layer is connected with described transparency carrier, the lid bottom that optical density is greater than described shielding layer optical density is formed at the outside surface of described shielding layer, spacing is there is in the outer ledge of described shielding layer apart from surrounding's side of described transparency carrier, enhancement layer is covered what be provided with near the position, inside edge of described shielding layer that optical density is greater than shielding layer optical density, the described enhancement layer that covers is arranged around the inner peripheral of described shielding layer, and described in cover a part for enhancement layer between shielding layer and described transparency carrier, and another part stretches out from the inside edge of described shielding layer.
According to design concept of the present invention, the present invention is provided with the packed layer of optical density lower than described lid bottom at the outer ledge of described shielding layer and the spacing place of transparency carrier, and the thickness of described packed layer is more than or equal to described shielding layer and is less than or equal to the thickness sum of shielding layer and lid bottom.
According to design concept of the present invention, the outer ledge of described lid bottom forms spacing to indentation inside described shielding layer outside surface in the edge of shielding layer, and described packed layer covers this spacing; Inside the outside surface covering enhancement layer described in the inside edge of described lid bottom is positioned at and the inside edge of described lid bottom and described inside edge of covering enhancement layer also exist spacing.
According to design concept of the present invention, shielding layer of the present invention is sandwich construction, and the inside edge of each layer of described shielding layer successively reduces to the distance of the periphery of described transparency carrier, described in cover enhancement layer be positioned at described shielding layer orlop and described in cover enhancement layer inner side edge stretch out from the undermost inside edge of described shielding layer.
According to design concept of the present invention, the outer ledge of each layer of shielding layer of the present invention is equal to the distance of the periphery of described transparency carrier.
According to design concept of the present invention, the thickness that enhancement layer is covered in the present invention is 1-3 μm, and width is 300-500 μm; And the width covering enhancement layer between described shielding layer and described transparency carrier is 90-200 μm.
According to design concept of the present invention, the width that enhancement layer is covered in the present invention is 350-450 μm, and the width covering enhancement layer being positioned at described shielding layer and described transparency carrier is 110-180 μm.
According to design concept of the present invention, the spacing of the outer ledge of shielding layer of the present invention and surrounding's side of described transparency carrier is 350-450 μm, and the spacing of the outer ledge of described lid bottom and the outer ledge of described shielding layer is 150-300 μm.
Compared with prior art, the present invention has following beneficial effect: (1) exists spacing apart from surrounding's side of described transparency carrier due to the outer ledge of shielding layer of the present invention, when attaching antiacid film on the transparent substrate carrying out secondary hardening to touch-screen, it is compact that antiacid film attaches at this spacing place, and then avoid hydrofluoric acid permeate and cause side etching phenomenon to transparency carrier side to transparency carrier, (2) again because the present invention is formed with lid bottom at the outside surface of shielding layer, and be provided with at the inside edge place of shielding layer and cover enhancement layer, this lid bottom is higher with the optical density of covering enhancement layer, shaded effect is better, after touch-screen and LCM fit, block because the outside surface of shielding layer and inside edge place have the relatively large lid bottom of optical density and cover enhancement layer, the light that LCM sends, light leakage phenomena can not produced at the inside edge place of shielding layer and shielding layer, (3) owing to being provided with spacing between the outer ledge of shielding layer of the present invention and the side of described transparency carrier, and the outer ledge of lid bottom is to indentation one determining deviation inside shielding layer outside surface, like this, when making lid bottom, if the material making lid bottom exists residual, due to the existence of spacing, the corresponding material that can ensure to make lid bottom remains and is positioned at this arduousness to greatest extent, because the material in this spacing is residual, there is shielding layer to block, and then can prevent the corresponding material produced because making lid bottom from remaining, touch-screen edge is caused to tarnish and form the outside bad phenomenon such as black surround or grey limit, (4) the present invention arranges packed layer at the spacing place of the outer ledge of described shielding layer and the side of described lid bottom outer ledge and described transparency carrier, this packed layer can after product secondary hardening, the surplus place that the light preventing LCM from sending is reserved through touch-screen edge sends, and improves the light leakage performance of touch-screen, (5) because the distance of the inside edge of each layer of invention shielding layer and the periphery of described transparency carrier is successively reduced, when the shielding layer of this kind of version arranges line layer, owing to rising comparatively gently between each layer, therefore, broken string can not be produced when the touch control line being positioned at transparency carrier visible area arranges circuit on lid bottom or shielding layer, thus improve product quality.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of conventional one-piece formula capacitance touch screen;
Fig. 2 is plan structure schematic diagram of the present invention,
Fig. 3 be in Fig. 2 of the present invention A-A to sectional structure schematic diagram, the just symbolistic structure showing shielding layer in figure, in this structure the single or multiple lift structure of shielding layer all integrally structure illustrate.
Fig. 4 is the partial enlargement structural representation in Tu3Zhong B district of the present invention;
Fig. 5 be in Fig. 2 of the present invention A-A to the sectional structure schematic diagram of another kind of version, the symbolistic structure shown when shielding layer is three layers in figure.
Fig. 6 is the partial enlargement structural representation in Tu5Zhong C district of the present invention.
Embodiment
First, need to be described, the transparent base 1 alleged by the present invention is transparent material, and this transparent material can be alkali-free glass or transparent flexible resin plate, can certainly be have alkali glass; Transparent flexible resin plate can be poly terephthalic acid second two fat (PET), polymethylmethacrylate (PMMA) or polycarbonate.Shielding layer alleged by the present invention, lid bottom, cover enhancement layer and packed layer both can adopt ink material to make, also can adopt made by photoresist, the material that optical density is larger can select black or gray ink or photoresistance, the material that optical density is less, can select ink or the photoresistance of white, redness or the color such as golden.
See Fig. 2, Fig. 3 and Fig. 4, monolithic capacitive touch screen of the present invention, comprises transparent base 1, and the peripheral position near described transparent base 1 is provided with shielding layer 11, and shielding layer 11 is arranged around the periphery of transparency carrier 1.The inner side of described shielding layer 11 is the visible area 12 of touch-screen, is provided with induced electricity polar region, the periphery of induced electricity polar region is provided with line layer in this visible area 12, and described line layer and described induced electricity polar region are electrically connected.And the Main Function of shielding layer 11 is exactly to hide the line layer being positioned at transparency carrier periphery, have an X-rayed in outer and affect the visual effect of monolithic capacitive touch screen to avoid line layer.
The shielding layer 11 of the present invention material that optical density is lower as adopted makes, when such as adopting white, gold or the photoresistance such as red or ink material to make, because the optical density of such material is lower, for reaching good screening effect to light, it is thicker that shielding layer 11 is processed usually, and then when shielding layer 11 periphery arranges line layer, line layer is easy to produce broken string phenomenon; For avoid shielding layer 11 thickness blocked up and cause line layer produce broken string phenomenon, and improve the screening performance of shielding layer 11 pairs of light, the present invention is also formed with lid bottom 13 at the outside surface of shielding layer 11, the optical density of the material of this lid bottom 13 is greater than the optical density of shielding layer 11 material, such as lid bottom 13 can adopt the higher black of optical density or grey photoresistance or ink and make, and shielding layer 11 can adopt the relatively little photoresistance of the relatively little white of optical density, gold or the optical density such as red or ink material and make.
Because the outside surface of shielding layer 11 of the present invention is provided with lid bottom 13, and the optical density of this lid bottom 13 is larger, therefore, it is thinner that the thickness of the shielding layer 11 of this kind of version can do relatively, and be layer hierarchic structure between each layer of shielding layer 11 of the present invention, when the shielding layer of this kind of version arranges line layer, owing to rising comparatively gently between each layer, therefore, broken string can not be produced when the touch control line being positioned at transparency carrier visible area arranges circuit on lid bottom or shielding layer, and then product yield is got a promotion.
Simultaneously, for avoiding described in processing and fabricating during lid bottom 13, the material making described lid bottom 13 produces residual in the edge of transparency carrier 11, and affect the effect that presents of touch-screen product edge, such as: the material produced because making described lid bottom 13 remains, in the edge of transparency carrier 1 outside transparency carrier 1 is revealed in; The edge of lid bottom 13 of the present invention is positioned at inside the outside surface of described shielding layer 11, that is, the edge of lid bottom 13 of the present invention is to indentation certain distance inside the outside surface of shielding layer 11, namely there is spacing in the outer ledge of described shielding layer 11 and the outer ledge of described covering layer 11, and this spacing is preferably 150-300 μm.Due to the existence of this spacing, when making described lid bottom 13, even if produce the residual of respective material, this spacing is positioned at because this material is residual, because the scope of this spacing is covered by described shielding layer 11, therefore, outside can ensureing that the material remained can not be revealed in from transparency carrier 1, and then the product yield of one chip touch-screen is promoted further.
Same, residual and outside shielding layer 11 inside edge place is revealed in order to avoid making respective material that lid bottom 13 produces, the inside edge of lid bottom 13 of the present invention is also positioned at the outside surface inner side of described shielding layer 11, and namely the inside edge of lid bottom 13 forms spacing to indentation inside described shielding layer 11 outside surface in the edge of shielding layer 11; When making lid bottom 13, inside edge due to lid bottom 13 is positioned at the outside surface inner side of shielding layer 11, and there is spacing with the inside edge of shielding layer 11 in lid bottom 13, therefore, even if the corresponding material of the generation of lid bottom 13 remains, this material remains the inner side that also can be positioned at shielding layer 11, and outside can not being revealed in by transparency carrier 1, and then guarantee product quality.
In addition, because the edge thickness at shielding layer 11 inside edge place is thinner, when material as adopted optical density lower makes shielding layer 11, the screening performance at shielding layer 11 inside edge place is poor, be easy to light leakage phenomena occurs, for avoiding this bad phenomenon, the present invention is arranged at the inside edge place of described shielding layer 11 covers enhancement layer 14, and this optical density of covering the material of enhancement layer 14 is greater than the optical density of shielding layer 11 material; The described enhancement layer 14 that covers is arranged around the inner peripheral of described shielding layer 11, and a part of covering enhancement layer 14 is between shielding layer 11 and described transparency carrier 1, and another part stretches out from the inside edge of described shielding layer 11; For avoiding making lid bottom 13 and the respective material that produces remains and outside shielding layer 11 inside edge place is revealed in, cover the outside surface inner side of enhancement layer 14 described in the inside edge of described lid bottom 13 is positioned at, and also there is spacing in the inside edge of described lid bottom 13 and described inside edge of covering enhancement layer 14.
As can be seen from above structure, outside surface due to shielding layer 11 of the present invention is coated with the relatively large lid bottom 13 of optical density, the inside edge place of shielding layer 11 be provided with optical density relatively large cover enhancement layer 14, at this lid bottom 13 with under the effect of covering enhancement layer 14, the inside edge place of shielding layer 11 and shielding layer 11 all can not produce light leakage phenomena; In addition, cover the outside surface inner side of enhancement layer 14 described in the inside edge of lid bottom 13 is positioned at, this structure also can be avoided when making this lid bottom 13, and the material produced because of lid bottom 13 remains the phenomenon that the visible area 12 of touch-screen is suffered erosion.
As embodiments of the invention, the thickness covering enhancement layer 14 of the present invention is 1-3 μm, and width is 300-500 μm; And make the width covering enhancement layer 14 between described shielding layer 11 and described transparency carrier 1 be 90-200 μm.For making effect of the present invention reach optimum, as preferred version of the present invention, described in cover enhancement layer 14 width be preferably 350-450 μm, and be positioned at described shielding layer 11 and be preferably 110-180 μm with the width covering enhancement layer 14 of described transparency carrier 1.
In addition, for preventing when secondary hardening, hydrofluoric acid permeate to transparency carrier 1 side and side etching phenomenon is caused to transparency carrier 1 of the present invention, shielding layer 11 of the present invention is arranged on the inside of transparency carrier 1, that is, the outer ledge of the outer ledge relative transparent substrate 1 of shielding layer 11 is to the inside indentation certain distance of transparency carrier 1, and make the outer ledge of described shielding layer 11 and surrounding's side of described transparency carrier 1 there is spacing, this spacing is preferably 350-450 μm; Due to the existence of this spacing, when attaching antiacid film carrying out secondary hardening to touch-screen on transparency carrier 1, it is compact that antiacid film attaches at this spacing place and described transparency carrier 1, and then can prevent hydrofluoric acid permeate from causing side etching phenomenon to the side of transparency carrier 1 to transparency carrier 1.
Simultaneously, after secondary hardening is carried out to touch-screen, spill from the side spacing of transparency carrier for preventing light, the present invention is provided with packed layer 15 at the outer ledge of shielding layer 11 and the spacing place of outer ledge and transparency carrier, simultaneously, the spacing place formed to the inner indentation of shielding layer 11 relative to the outer ledge of shielding layer 11 at the outer ledge of lid bottom 13 also covers this packed layer 15, this packed layer 15 optical density is less than the optical density of the material of described lid bottom 13, the thickness of packed layer 15 is preferably greater than or equal to the thickness of shielding layer 11, and be less than or equal to the thickness sum of shielding layer 11 and lid bottom 13.
See Fig. 5 and Fig. 6, as the further refinement to the shielding layer 11 in the above embodiment of the present invention, exemplarily, shielding layer 11 shown in Fig. 5 and Fig. 6 is three-decker, and the inside edge of each layer of described shielding layer 11 to the distance of periphery of described transparency carrier 1 is successively reduced, and then make to form layer hierarchic structure from top to bottom between each layer of described shielding layer 11.In addition, in order to ensure shielding layer 11 screening effect, the outer ledge of each layer of shielding layer 11 of the present invention is preferably equidistant setting to the distance of the periphery of described transparency carrier 1.Cover enhancement layer 14 be positioned at described shielding layer 11 orlop position and described in cover enhancement layer 14 inner side edge stretch out from the described undermost inside edge of shielding layer 11.
Adopt the shielding layer 11 that this layer of hierarchic structure is arranged, because the distance of the inside edge of each layer of shielding layer 11 and the periphery of described transparency carrier 1 is successively reduced, when the shielding layer 11 of this kind of version arranges line layer, because the gentle gradient between each layer rises, produce broken string phenomenon when can avoid arranging circuit on shielding layer 11 or on lid bottom 13, and then product yield is improved.In addition, cover the orlop position that enhancement layer 14 is positioned at described shielding layer 11, also can guarantee can not produce light leakage phenomena at the inside edge place of shielding layer 11.
It is evident that, shielding layer 11 in the present invention also can be set to the sandwich construction of other number, same, shielding layer 11 under sandwich construction form, the inside edge of its each layer also successively reduces to the distance of the periphery of described transparency carrier 1, also between each layer of described shielding layer 11, layer hierarchic structure is formed from top to bottom, simultaneously, cover the orlop position that enhancement layer 14 is positioned at described shielding layer 11 described in guaranteeing, and the inner side edge covering enhancement layer 14 described in making stretches out from the described undermost inside edge of shielding layer 11.The shielding layer 11 of this kind of version and cover enhancement layer 14 structure, when can prevent from connecting up on shielding layer 11, line layer produces broken string phenomenon; Meanwhile, cover enhancement layer 14 structure can guarantee can not produce light leakage phenomena at the inside edge place of shielding layer 11.
Claims (8)
1. a monolithic capacitive touch screen, the shielding layer comprising transparency carrier and arrange around described transparency carrier periphery, the inside surface of described shielding layer is connected with described transparency carrier, it is characterized in that, the lid bottom that optical density is greater than described shielding layer optical density is formed at the outside surface of described shielding layer, spacing is there is in the outer ledge of described shielding layer apart from surrounding's side of described transparency carrier, enhancement layer is covered what be provided with near the position, inside edge of described shielding layer that optical density is greater than shielding layer optical density, the described enhancement layer that covers is arranged around the inner peripheral of described shielding layer, and described in cover a part for enhancement layer between shielding layer and described transparency carrier, and another part stretches out from the inside edge of described shielding layer.
2. monolithic capacitive touch screen as claimed in claim 1, it is characterized in that, the outer ledge of described shielding layer and the spacing place of transparency carrier are provided with the packed layer of optical density lower than described lid bottom, and the thickness of described packed layer is more than or equal to described shielding layer and is less than or equal to the thickness sum of shielding layer and lid bottom.
3. monolithic capacitive touch screen as claimed in claim 2, is characterized in that, the outer ledge of described lid bottom forms spacing to indentation inside described shielding layer outside surface in the edge of shielding layer, and described packed layer covers this spacing; Inside the outside surface covering enhancement layer described in the inside edge of described lid bottom is positioned at and the inside edge of described lid bottom and described inside edge of covering enhancement layer also exist spacing.
4. monolithic capacitive touch screen as claimed in claim 3, it is characterized in that, described shielding layer is sandwich construction, and the inside edge of each layer of described shielding layer successively reduces to the distance of the periphery of described transparency carrier, described in cover enhancement layer be positioned at described shielding layer orlop and described in cover enhancement layer inner side edge stretch out from the undermost inside edge of described shielding layer.
5. monolithic capacitive touch screen as claimed in claim 4, is characterized in that, the outer ledge of each layer of described shielding layer is equal to the distance of the periphery of described transparency carrier.
6. the monolithic capacitive touch screen as described in any one of claim 1 to 5, is characterized in that, described in cover enhancement layer thickness be 1-3 μm, width is 300-500 μm; And the width covering enhancement layer between described shielding layer and described transparency carrier is 90-200 μm.
7. monolithic capacitive touch screen as claimed in claim 6, is characterized in that, described in cover enhancement layer width be 350-450 μm, and the width covering enhancement layer being positioned at described shielding layer and described transparency carrier is 110-180 μm.
8. monolithic capacitive touch screen as claimed in claim 7, it is characterized in that, the spacing of the outer ledge of described shielding layer and surrounding's side of described transparency carrier is 350-450 μm, and the spacing of the outer ledge of described lid bottom and the outer ledge of described shielding layer is 150-300 μm.
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| CN201420754468.5U CN204242156U (en) | 2014-12-03 | 2014-12-03 | Monolithic capacitive touch screen |
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| CN201420754468.5U CN204242156U (en) | 2014-12-03 | 2014-12-03 | Monolithic capacitive touch screen |
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| CN204242156U true CN204242156U (en) | 2015-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104461199A (en) * | 2014-12-03 | 2015-03-25 | 伯恩光学(惠州)有限公司 | Single-chip type capacitive touch screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104461199A (en) * | 2014-12-03 | 2015-03-25 | 伯恩光学(惠州)有限公司 | Single-chip type capacitive touch screen |
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