CN2751359Y - Touch control panel with pliable base plate - Google Patents

Abstract

The utility model relates to a touch control panel with a pliable base plate, which comprises a pliable transparent film, an upper part conducting film, a lower part conducting film and a pliable base plate, wherein all the constructional elements are spliced and combined with each other orderly; moreover, a plurality of partition balls are arranged between the upper part conducting film and the lower part conducting film so as to form gaps between the upper part conducting film and the lower part conducting film which are configured oppositely; an insulating bonding layer is arranged around a configuring zone of two layers of conducting film so as to bond and assemble the upper part conducting film and the lower part conducting film mutually into a plate body. Signals on the conducting film are transferred to a signal output bus and a signal processing circuit after penetrating through a silver conducting path which forms an electric connection with the edge at the lateral face of the conducting film, wherein the pliable base plate is made of olefin copolymer; moreover, a layer of metal film and an electromagnetic shielding layer are arranged on the base plate; the metal film forms an electric connection with the silver conducting path and the signal output bus by a plurality of electric connecting points arranged on the plate body of the base plate in a penetrative mode.

Description

The contact panel of tool flexible base plate

Technical field

The utility model is the improvement of relevant a kind of contact panel structure, refers to a kind of plate body tool bendability characteristics especially and has the contact panel structure of electromagnet shield effect concurrently.

Background technology

The structure of contact panel (Touch Panel) mainly comprises the subtend configuration to separate certain interval of two planar conducting films, usually conducting film up is a surface that is arranged at a flexual transparent membrane (FLIM), below conducting film then be arranged at a surface with transparent glass substrate (GIASS) of hard material, between two of subtend configuration, have most convex dot shape spacing bodies, and in the setting area of conducting film, reserve at interval, and, according to this two sealing is bonded together at the ring periphery in this zone coating viscose glue.On the production technology of contact panel, generally be on sheet material, to plate the very thin tin indium oxide of one deck (indium tin oxide is called for short ITO), so that directly on this glass substrate and FLIM, form conducting film.

Usually contact panel is to be widely used in being configured on the patterns such as LCD (LCD) or cathode ray tube (CRT) using, allow the user can be according to the indication on the screen-picture of being had an X-rayed, push from above with finger or nib etc., to detect the position of pushing, carry out the position input whereby.Owing to contact panel is that use the front that is configured in the screen pattern, light must penetrate this glass substrate, go up lower conductive film and FLIM, enter the video that just can see screen in the human eye, therefore the necessary energy of all material of contact panel printing opacity just can use clear glass as substrate so have contact panel.

Yet this employing glass is as the contact panel of substrate, because plate body can't flexural deformation, so installation bad adaptability, for example can't entirely be installed on the CRT screen of cambered surface: in addition, the quality of glass material is hard poor impact resistance, be easy to cracked shortcoming, and the intensity for possessing plate body, so glass substrate also must have suitable thickness, thereby cause the puzzlement that the contact panel finished product thickness can't reduce, weight can't alleviate and cost can't reduce.

For overcoming the problem that aforementioned glass substrate is derived, once there was advanced person of the same trade or business to have and planned to utilize polycarbonate (Polycarbonate, hereinafter to be referred as PC) replace glass substrate, though this PC sheet material has flexible, excellent impact strength, dimensional stability, advantages such as light transmission is good, but relatively poor chemical resistance is arranged, shortcomings such as low fatigue durability, and it with ITO between to combine adaptability not good, cause ITO coating to separate easily, and the ITO thin layer is not if use under the fixed support of PC, be easy to cause during use the damage of breaking of ITO thin layer, cause summoning and badly even may not use; Because the restriction of this shortcoming, be difficult to ITO is set directly on the PC sheet material with present technology, so general actual way is ITO to be plated respectively to be located on two FLlM earlier, and will fit in by optical cement on the PC plate after the two FLIM butt joint combination, the contact panel of forming the F-F-PC configuration, getting rid of existing glass substrate in view of the above can't be crooked, easy shortcoming such as cracked and quality heaviness.

It is to be solved that but the contact panel of aforementioned this F-F-PC configuration also has many problems to have, for example: the combination among the F-F-PC must be fitted by applied optics glue, yet general optical cement (for example epoxy adhesive) glueds joint after a period of time, catabiosis will take place with the PC plate, cause yellowing, binding face to peel off, cause not only that outward appearance is not good, transmittance reduces that (TP normally is arranged on and monitors screen the place ahead, so transmittance is very important characteristic), and can make the joint reliability between member reduce, produce misoperation.In addition, the manufacturing of the contact panel of the existing glass substrate of this combination configuration has increased many operations and processing cost.

The utility model content

The utility model provides a kind of contact panel of tool flexible base plate, by using cycloolefin co-polymer material as substrate, make contact panel tool bendability characteristics, promote to install adaptability, increase the resistance to impact of panel simultaneously, simplify to form member and job sequence, and significantly promote the excellent specific property aspect optics, electric and processing of contact panel.

This contact panel structure is by a flexual transparent membrane (FLIM), one top conducting film, an one below conducting film and a flexible base plate are formed jointly, wherein, this top conducting film is set on the surface of this transparent membrane, and this below conducting film is formed on the surface of this flexible base plate in the mode (for example ITO metal evaporation) of direct setting, in the middle of the two with separating ball (DotSpacer) will be separated from each other certain interval and subtend configuration, and be provided with the insulation cementing layer and will glue together winding each other and become a plate body in the periphery of two conducting film configuring areas, and the signal on these conducting films is to see through the silver-colored guide passage (Silver-containingconductive electrode) that electricity is connected on lateral edge to be sent to a signal output bus (Tail) and a signal processing circuit.

According to the utility model, this flexible base plate is to adopt cycloolefin co-polymer (CyclicOlefin Copolymer, hereinafter to be referred as COC), it is that a kind of utilization aromatic ring alkene metal derivative (metallocene) is a catalyst, with ethene (Ethylene), cyclodienes (cyilo-diene) and field ice alkene (Norbornene, NB) high molecular polymer that forms of copolymerization.And this COC material has more possessed the required correlation properties of substrate of contact panel except having tough flexible characteristic: for example, the good metal property followed and can anti-manufacture craft in high temperature: be fit to directly ITO thin layer evaporation is located on the COC substrate.Excellent optical property: colourless and transparent, reach more than 90% at the scope transmittance of visible light and black light, and two index of refraction is very low.Excellent electronic component material characteristic: as low-k (Dielectric, Dk) circuit be can reduce and signal transmission usefulness, high glass transition temperature (glass transition temperature) and high heat distortion temperature (heat distortion temperature) disturbed, promote.Chemical-resistant: water vapor, acid, alkali and polar solvent are had excellent tolerance.Moisture-proof gas is good, hydroscopicity is very low: can avoid changing because of hygroscopic effect causes qualitative change and size, and block the erosion to internals of water, gas.Have the excellent size stability, and its mould shrinkage factor is low, linear expansion coefficient is also low, can make the high precision part.Obdurability and resistance to impact are good: can be made into light, thin sheet material, durability is good, be difficult for breaking or being out of shape.Good environmental protection characteristic: reclaiming once more that processing can't make the material character deterioration, and can not produce toxic gas when incinerating, is quite favourable to environmental protection.Especially, the material behaviors such as the yield that contracts of COC and two kinds of materials of FILM are approaching, so the two is used in combination, are subjected to the factor of extraneous thermal effect low, and are not yielding after the combination, stable high, can promote the quality of contact panel finished product.To sum up characteristic COC extremely be fit to use as the ito substrate in the touch surface, to replace the general at present ito glass substrate that uses, again with existing F-F-PC configuration

Contact panel is compared, and the utility model can be save multiple working procedure, saves production cost, and gets rid of the disadvantages that FLIM and PC plate are derived with the optical cement applying; Particularly, with respect to existing various contact panel structures, the utility model is effectively reduced the thickness of contact panel finished product, so that be applied even more extensively on the various electronic products.

Again according to the utility model, this contact panel also comprises an electro-magnetic screen layer, the apparent surface who is the surface of conducting film below this COC substrate is provided with is laid with the layer of metal film, it for example is metal evaporation ITO conductive film, and this COC substrate is provided with the electric contact that runs through more than one or between these plate body two surfaces, borrow these electric contacts that this metallic film electricity is received aforementioned silver-colored guide passage and bus, interference or the destruction that prevents EMI (Electro Magnetic Interference, electromagnetic interference (EMI)) and static is set in view of the above.(existing contact panel since glass-based sheet material base crisp firmly, be difficult to be drilled with electricity and connect the hole, so normally with conducting resinl or silver-colored guide passage pile warp substrate periphery is electric again receives on the bus that is located at the substrate another side.)

Description of drawings

Fig. 1 is chorista figure of the present utility model;

Fig. 2 is the side cut-away view of component composition of the present utility model;

Fig. 3 is the side cut-away view of another embodiment of the utility model.

Embodiment

Relevant other features of the present utility model and function; after cooperating following graphic being further described; your auditor hope can make more detailed understanding is arranged; only the following stated person only is in order to explain preferred embodiment of the present utility model; be not that attempt is done any pro forma restriction to the utility model according to this; so, all have in that identical utility model spirit is following do relevant any modification of the present utility model or change, all must be included in the scope of the utility model rights protection.

To shown in Figure 2, the contact panel of the utility model embodiment is to comprise a flexual transparent membrane 1, a top conducting film 2, a below conducting film 3 and a flexible base plate 4 as accompanying drawing 1; This top conducting film 2 is set on the basal surface of flexible transparent film l, and this below conducting film 3 also is arranged on the upper surface of this flexible base plate 4 by the mode with metal evaporation ITO, last, below conducting film 2,3 in the middle of the two with most separating balls 42 will be separated from each other certain interval and subtend configuration, and in this two conducting film 2, the periphery of 3 configuring areas is provided with insulation cementing layer 43 and will glues together winding each other and become a plate body, and the signal on these conducting films is to see through the silver-colored guide passage 44 that electricity is connected on lateral edge to be sent to a soft bus 45 and signal processing circuit (not being shown in drawing).

In the utility model embodiment, this flexible base plate is to adopt the made slim plate body of cycloolefin co-polymer material, and except that surperficial thereon plating is provided with the aforementioned below conducting film 3, also establish the layer of metal film as electro-magnetic screen layer 5 in the lower surface plating of this substrate, and be drilled with some installation pore chambers (industry is commonly referred to a glue hole) that run through the electric contact 47 of plate body on this substrate, and in these pore chambers, insert conductive materials, borrow these electric contacts 47 that this metallic film electricity is received aforementioned silver-colored guide passage 44 and bus 45, prevent the purpose of electromagnetism or electrostatic interference.

In other extension is used, the utility model can by this COC substrate the excellent machining property of special tool, and set in advance a separation layer 61 and an anti-reflecting layer 62 at the surface of this substrate 4 branch, and then plate and establish these below conducting film 3 and electro-magnetic screen layers 5 (as shown in Figure 3), promote the optics rerum natura of contact panel in view of the above.

Claims (1)

1, a kind of contact panel of tool flexible base plate, comprise a flexual transparent membrane, one top conducting film, an one below conducting film and a flexible base plate, this top conducting film is set on the surface of this transparent membrane, and this below conducting film also is set directly on the surface of this flexible base plate, in the middle of two conducting films with most separating balls will be separated from each other certain interval and subtend configuration, and be provided with the insulation cementing layer and will glue together winding each other and become a plate body in the periphery of two conducting film configuring areas, and the signal on these conducting films is to see through the electric silver-colored guide passage that is connected on lateral edge to be sent to a signal output bus and a signal processing circuit, it is characterized in that: this flexible base plate is made with cycloolefin co-polymer material, the apparent surface on the surface of conducting film lays the layer of metal film below this substrate is provided with, and this substrate is provided with the electric contact that runs through more than one or between these plate body two surfaces, by this electric contact this metallic film electricity received described silver-colored guide passage and signal output bus.

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