CN103425376A - Capacitive touch screen - Google Patents
Capacitive touch screen Download PDFInfo
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- CN103425376A CN103425376A CN2013103837314A CN201310383731A CN103425376A CN 103425376 A CN103425376 A CN 103425376A CN 2013103837314 A CN2013103837314 A CN 2013103837314A CN 201310383731 A CN201310383731 A CN 201310383731A CN 103425376 A CN103425376 A CN 103425376A
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Abstract
The embodiment of the invention discloses a capacitive touch screen, which comprises a display screen positioned on a lowermost layer and used for displaying images, and a Cover Lens positioned on an uppermost layer and used for protecting a nano-indium tin metal oxide (ITO) sensor, wherein the ITO sensor is positioned between the display screen and the Cover Lens, and is used for sensing a touch point; the Cover Lens is bonded with the ITO sensor through optical clear adhesive (OCA); a hole for accommodating a button icon is formed on the OCA. According to the capacitive touch screen, the technical problem of influence of bubbles produced easily by the attachment of the conventional button icon to the surface of a substrate on the appearance and service life of the touch screen is solved.
Description
Technical field
The present invention relates to the capacitive touch screen field, relate in particular to a kind of capacitive touch screen, a kind of capacitive touch screen that can prevent bubble.
Background technology
Touch screen is for the compound touch-screen on the electronic products such as mobile phone, e-book, digital camera, and wherein capacitance type touch control screen is the most frequently used a kind of in touch screen.
Capacitance type touch control screen is to utilize the electric current induction of human body to carry out work.Capacitance type touch control screen is four layers of compound glass screen normally, when user's finger touch is on capacitance type touch control screen, due to people's bulk electric field, user and capacitance touching control screen surfaces form with a coupling capacitance (for high-frequency current, electric capacity can be considered as conductor), so finger siphons away a very little electric current from the touch point of capacitance touching control screen surfaces, this electric current divides in the electrode four jiaos from capacitance type touch control screen and flows out.The electric current of these four electrodes of flowing through is directly proportional to the distance of finger to four jiaos, and controller, by the accurate Calculation of these four current ratios, draws the position of touch point.
Existing capacitance type touch control screen is to utilize the base material of glass as the ITO figure, in the treatment button icon, is that button icon directly is bonded in above base material, and simultaneously because glass baseplate cutting yield is lower, starting material, processing cost is higher and frangible.
Existing button icon is directly to be bonded in above base material mostly, after pressing or of long duration can produce bubble, has a strong impact on the outward appearance of product; The young man is more and more fastidious now, and after generation bubble product is not attractive in appearance, most of can the selection be changed a new touch screen or new mobile phone, and then affects the serviceable life of product.
Chinese invention patent CN102681741A discloses a kind of individual layer film Film structure capacitive touch screen, comprising: be positioned at the bottom, for showing the display screen of image; Be positioned at the superiors, for the protection of the cover plate Cover Lens of nano indium tin metal oxide ITO sensor; The ITO sensor is between described display screen and Cover Lens, for the sensing touch point; Described ITO sensor comprises two-layer, and an ITO layer is by printing etch process, the Film of the ITO with specific ITO figure that the Film that is coated with whole ITO is processed into; The 2nd ITO layer is the specific ITO graph layer plated towards a side of described display screen at Cover Lens.Described capacitive touch screen, carrying out the face button icon while arranging, need to directly be bonded in button icon on ITO Film, after pressing or of long duration can produce bubble, has a strong impact on the outward appearance of product, further affects serviceable life.
Chinese utility model patent CN202904543U discloses the button character of using on a kind of capacitive touch screen, and described button character is provided with the layer of transparent ink layer, and described transparent ink layer is that the mode by serigraphy realizes.Button character need to directly be bonded in above base material, of long duration can produce bubble, affects outward appearance and the serviceable life of product.
Chinese invention patent CN102629165A discloses a kind of display module, the touch screen and the liquid crystal display module that through the adhesive linkage laminating, arrange, and touch screen is provided with marking keys; Light guide member, be arranged between described touch screen and liquid crystal display module corresponding to the marking keys place arranged on touch screen; Luminous component, be arranged on a side of described light guide member, and the luminous end of luminous component is towards described light guide member.Marking keys on touch screen is arranged on the binding face of transparent protection screen and touch-control sensor, because difference of height is arranged, can produce bubble, affects outward appearance and the serviceable life of product.
Summary of the invention
Be fitted in the surface of touch-control sensor in order to solve existing button icon, easily produce bubble and then affect the touch screen technical matters in serviceable life, the embodiment of the present invention provides a kind of capacitive touch screen.
Embodiment of the present invention provides a kind of capacitive touch screen, comprising: be positioned at the bottom, for showing the display screen of image; Be positioned at the superiors, for the protection of the cover plate Cover Lens of nano indium tin metal oxide ITO sensor; The ITO sensor is between described display screen and Cover Lens, for the sensing touch point; Described Cover Lens and ITO sensor are bonded together by optics double faced adhesive tape OCA; Dig the position, hole of placing button icon on described OCA.
Wherein preferably, the size of position, described hole is than the actual size peripheral expansion 200-500 micron of button icon.
More preferably, the size of position, described hole is than the actual size peripheral expansion 40-50 micron of button icon.
As a kind of optimal way, described Kong Weiwei through hole.
As a kind of optimal way, described Cover Lens is made by tempered glass.
As a kind of optimal way, described ITO sensor consists of one deck ITO Film.
As a kind of optimal way, described ITO sensor consists of two-layer ITO Film; Wherein, the ITO Film towards described Cover Lens mono-side is bonded together by OCA and Cover Lens; Between the two-layer ITO Film of described ITO sensor, by the 2nd OCA, be bonded together, described the 2nd OCA thickness is the 50-100 micron.
Wherein, described capacitive touch screen also comprises: with described ITO sensor, be connected, for calculating touch point the return flexible PCB to processor.
Capacitive touch screen provided by the invention is borehole on OCA, and button icon is positioned over to the embedding that mode in OCA has realized button icon, and this mode has greatly reduced the possibility of Bubble formation when pasting with pressing; But most importantly the size of reasonable control punch position, pass through test of many times, when the size of position, hole is controlled at than the actual size peripheral expansion 200-500 micron of button icon, the fraction defective that product produces bubble is 0.1% left and right; When the size of position, hole is controlled at than the actual size peripheral expansion 40-50 micron of button icon, can be 0.0% so that the gas product bubble produces fraction defective; Because the present invention can not produce bubble, not only product is specious, and the life-span is guaranteed.The present invention has broken capacitive touch screen button icon directly has been bonded in to the tradition above base material; the problem of new better placement button icon is provided; product of the present invention is due to specious simultaneously; use long afterwards without Bubble formation; do not need repairing and the reason such as replacing; make extremely fiery that the electronic products such as mobile phone that use product of the present invention sell, for manufacturer with sell producer and all brought objective interests.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present invention;
The decomposing schematic representation of Cover Lens, OCA and ITO sensor in capacitive touch screen when Fig. 2 is ITO sensor one deck ITO Film formation;
Fig. 3 is the decomposing schematic representation of Cover Lens, OCA and ITO sensor in the capacitive touch screen of ITO sensor while consisting of two-layer ITO Film.
Embodiment
The capacitive touch screen that the embodiment of the present invention provides, can reduce starting material, processing cost, improves toughness of products and production capacity, alleviates thickness and the weight of product simultaneously.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belong to the scope of protection of the invention.
Referring to Fig. 1 and Fig. 2, a kind of capacitive touch screen comprises: be positioned at the bottom, for the display screen 2 that shows image; Be positioned at the superiors, for the protection of the cover plate Cover Lens1 of nano indium tin metal oxide ITO sensor 3, described Cover Lens1 is made by tempered glass; ITO sensor 3 is between described display screen 2 and Cover Lens1, and described ITO sensor 3 consists of one deck ITO Film31; Described Cover Lens1 and ITO sensor 3 are bonded together by optics double faced adhesive tape OCA4; Dig the position, hole 5 of placing button icon on described OCA4, the size of position, described hole 5 is than 200 microns of the actual size peripheral expansion of button icon (not shown), and position, described hole 5 is through hole.
Wherein, described capacitive touch screen also comprises flexible PCB 6, and described flexible PCB 6 is connected with described ITO sensor 3, for calculating touch point return to processor.
The capacitive touch screen that the present embodiment provides adopts the size of position, hole 5 than 200 microns of the actual size peripheral expansion of button icon, button icon is positioned over to the embedding that mode in OCA4 has realized button icon, greatly reduced the possibility of Bubble formation when pasting with pressing, make button icon tightly be fixed in capacitive touch screen, and the fraction defective of product generation bubble is controlled in 0.1%.
Referring to Fig. 1 and Fig. 2, a kind of capacitive touch screen comprises: be positioned at the bottom, for the display screen 2 that shows image; Be positioned at the superiors, for the protection of the cover plate Cover Lens1 of nano indium tin metal oxide ITO sensor 3, described Cover Lens1 is made by tempered glass; ITO sensor 3 is between described display screen 2 and Cover Lens1, and described ITO sensor 3 consists of one deck ITO Film31; Described Cover Lens1 and ITO sensor 3 are bonded together by optics double faced adhesive tape OCA4; Dig the position, hole 5 of placing button icon on described OCA4, the size of position, described hole 5 is than 40 microns of the actual size peripheral expansion of button icon (not shown), and position, described hole 5 is through hole.
Wherein, described capacitive touch screen also comprises flexible PCB 6, and described flexible PCB 6 is connected with described ITO sensor 3, for calculating touch point return to processor.
The capacitive touch screen that the present embodiment provides adopts the size of position, hole 5 than 40 microns of the actual size peripheral expansion of button icon, button icon is positioned over to the embedding that mode in OCA4 has realized button icon, greatly reduced the possibility of Bubble formation when pasting with pressing, make button icon tightly be fixed in capacitive touch screen, and the fraction defective of product bubble is 0.0%.
With reference to figure 1 and Fig. 3, a kind of capacitive touch screen comprises: be positioned at the bottom, for the display screen 2 that shows image; Be positioned at the superiors, for the protection of the cover plate Cover Lens1 of nano indium tin metal oxide ITO sensor 3, described Cover Lens1 is made by tempered glass; ITO sensor 3 is between described display screen 2 and Cover Lens1, for the sensing touch point; Described ITO sensor 3 is by two-layer ITO Film(32,34) form; Wherein, the ITO Film32 towards described Cover Lens1 mono-side is bonded together by optics double faced adhesive tape OCA4 and Cover Lens1; The two-layer ITO Film(32 of described ITO sensor 3,34) between, by the 2nd OCA33, be bonded together, described the 2nd OCA33 thickness is 70 microns; Dig the position, hole 5 of placing button icon on described OCA4, the size of position, described hole 5 is than 500 microns of the actual size peripheral expansion of button icon, position, described hole 5 is through hole, described capacitive touch screen also comprises flexible PCB 6, described flexible PCB 6 is connected with described ITO sensor 3, for calculating touch point return to processor.
The capacitive touch screen that the present embodiment provides adopts the size of position, hole 5 than 500 microns of the actual size peripheral expansion of button icon, button icon is positioned over to the embedding that mode in OCA4 has realized button icon, greatly reduced the possibility of Bubble formation when pasting with pressing, make button icon tightly be fixed in capacitive touch screen, and the fraction defective of product generation bubble is controlled in 0.1%.
With reference to figure 1 and Fig. 3, a kind of capacitive touch screen comprises: be positioned at the bottom, for the display screen 2 that shows image; Be positioned at the superiors, for the protection of the cover plate Cover Lens1 of nano indium tin metal oxide ITO sensor 3, described Cover Lens1 is made by tempered glass; ITO sensor 3 is between described display screen 2 and Cover Lens1, for the sensing touch point; Described ITO sensor 3 is by two-layer ITO Film(32,34) form; Wherein, the ITO Film32 towards described Cover Lens1 mono-side is bonded together by optics double faced adhesive tape OCA4 and Cover Lens1; The two-layer ITO Film(32 of described ITO sensor 3,34) between, by the 2nd OCA33, be bonded together, described the 2nd OCA33 thickness is 50 microns; Dig the position, hole 5 of placing button icon on described OCA4, the size of position, described hole 5 is than 50 microns of the actual size peripheral expansion of button icon, and position, described hole 5 is through hole.
Wherein, described capacitive touch screen also comprises flexible PCB 6, and described flexible PCB 6 is connected with described ITO sensor 3, for calculating touch point return to processor.
The capacitive touch screen that the present embodiment provides adopts the size of position, hole 5 than 50 microns of the actual size peripheral expansion of button icon, button icon is positioned over to the embedding that mode in OCA4 has realized button icon, greatly reduced the possibility of Bubble formation when pasting with pressing, make button icon tightly be fixed in capacitive touch screen, and the fraction defective of product bubble is 0.0%.
It should be noted that; what the present invention described is a kind of product form of capacitive touch screen; other meets the product of structure of the present invention, even material, device name, outward appearance, device are put order etc., not affect the factor of product performance not identical, still belongs to the scope of protection of the invention.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a capacitive touch screen, comprising: be positioned at the bottom, for showing the display screen of image; Be positioned at the superiors, for the protection of the cover plate Cover Lens of nano indium tin metal oxide (being called for short ITO) sensor; The ITO sensor is between described display screen and Cover Lens, for the sensing touch point; Described Cover Lens and ITO sensor are bonded together by optics double faced adhesive tape OCA; It is characterized in that, dig the position, hole of placing button icon on described OCA.
2. capacitive touch screen as claimed in claim 1, is characterized in that, the size of position, described hole is than the actual size peripheral expansion 200-500 micron of button icon.
3. capacitive touch screen as claimed in claim 1, is characterized in that, the size of position, described hole is than the actual size peripheral expansion 40-50 micron of button icon.
4. capacitive touch screen as claimed in claim 1, is characterized in that, described Kong Weiwei through hole.
5. capacitive touch screen as claimed in claim 1, is characterized in that, described ITO sensor consists of one deck ITO Film.
6. capacitive touch screen as claimed in claim 1, is characterized in that, described ITO sensor consists of two-layer ITO Film; ITO Film towards described Cover Lens mono-side is bonded together by OCA and Cover Lens.
7. capacitive touch screen as claimed in claim 6, is characterized in that, between the two-layer ITO Film of described ITO sensor, by the 2nd OCA, is bonded together.
8. capacitive touch screen as described as claim 5 or 6, is characterized in that, described capacitive touch screen also comprises: with described ITO sensor, be connected, for calculating touch point the return flexible PCB to processor.
9. capacitive touch screen as claimed in claim 7, is characterized in that, described the 2nd OCA thickness is the 50-100 micron.
10. capacitive touch screen as claimed in claim 1, is characterized in that, described Cover Lens is made by tempered glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103837314A CN103425376A (en) | 2013-08-29 | 2013-08-29 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103837314A CN103425376A (en) | 2013-08-29 | 2013-08-29 | Capacitive touch screen |
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| CN103425376A true CN103425376A (en) | 2013-12-04 |
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| CN2013103837314A Pending CN103425376A (en) | 2013-08-29 | 2013-08-29 | Capacitive touch screen |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793773A (en) * | 2014-01-17 | 2015-07-22 | 湖北华尚光电有限公司 | Touch liquid crystal display, touch screen cover plate and manufacturing method thereof |
| CN106095176A (en) * | 2016-06-08 | 2016-11-09 | 广东南海启明光大科技有限公司 | A kind of copper facing nano-silver thread touch screen and manufacture method thereof |
| WO2019149208A1 (en) * | 2018-02-02 | 2019-08-08 | Oppo广东移动通信有限公司 | Image display method, storage medium, and mobile terminal |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104793773A (en) * | 2014-01-17 | 2015-07-22 | 湖北华尚光电有限公司 | Touch liquid crystal display, touch screen cover plate and manufacturing method thereof |
| CN104793773B (en) * | 2014-01-17 | 2018-10-23 | 道县华顺通科技有限公司 | Touch LCD screen, touch screen cover board and its manufacturing method |
| CN106095176A (en) * | 2016-06-08 | 2016-11-09 | 广东南海启明光大科技有限公司 | A kind of copper facing nano-silver thread touch screen and manufacture method thereof |
| CN106095176B (en) * | 2016-06-08 | 2020-04-10 | 广东南海启明光大科技有限公司 | Copper-plated nano silver wire touch screen and manufacturing method thereof |
| WO2019149208A1 (en) * | 2018-02-02 | 2019-08-08 | Oppo广东移动通信有限公司 | Image display method, storage medium, and mobile terminal |
| US11226718B2 (en) | 2018-02-02 | 2022-01-18 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and mobile terminal for utilizing area near openings in display screen to display application icon |
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Address after: 516025 Huizhou City, Guangdong Province, the three digital Industrial Park Applicant after: Guangdong Green precision parts Limited by Share Ltd Address before: Three Huicheng Guangdong District, Huizhou City, the number of Digital Industrial Park Applicant before: Green Precision Components (Huizhou) Co. Ltd. |
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Application publication date: 20131204 |
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