CN201374049Y

CN201374049Y - Touch panel structure

Info

Publication number: CN201374049Y
Application number: CN200820180537U
Authority: CN
Inventors: 柯建信
Original assignee: KE HANYU
Current assignee: KE HANYU
Priority date: 2008-12-03
Filing date: 2008-12-03
Publication date: 2009-12-30
Anticipated expiration: 2018-12-03

Abstract

The utility model relates to a touch panel structure. On the whole, a plurality of isolating balls are arranged between a first transparent electroconductive board and a second transparent electroconductive board to isolate the first transparent electroconductive board from the second transparent electroconductive board; wherein the first transparent electroconductive board adopts a PET substrate as a main body on which a transparent electroconductive film is arranged; and the second transparent electroconductive board adopts a transparent plastic substrate as a main body on which a transparent electroconductive film is arranged. After plastic is injected in a forming mould with extremely low roughness, the space of a mould cavity is compressed, as a result, the formed transparent plastic substrate becomes thin, the surface density becomes uniform, the surface has extremely low roughness, thereby the transparent electroconductive film can be directly arranged on the surface of the transparent plastic substrate, and consequently, the transparent plastic substrate can directly replace the conventional glass substrate, so that the structuralsafety and light transmittance of the touch panel are improved.

Description

Touch panel structure provided

Technical field

The relevant a kind of contact panel of the utility model aims to provide and a kind ofly can effectively promote safety of structure, and can reduce the touch panel structure provided of thickness, structure level number and weight or raising transmittance.

Background technology

Press, contact panel (or claiming touch panel) mainly is to be attached to the display outside, for cooperating the picture that display presented to use interface easily as a kind of intuition and operation; The development of the kind of contact panel so far, along with manufacturer makes the difference of principle and application and difference to some extent.

According to structure and sensing form different, present more common contact panel roughly can be divided into: electric resistance touch-control panel, capacitance type touch-control panel, infrared-type (optical profile type) contact panel, sound wave type contact panel, and electromagnetic touch-control panel; In addition, with regard to the use aspect, lay particular stress on part that individual use aspect uses based on electric resistance touch-control panel, in the higher application of public use aspect then based on condenser type, acoustic wave, infrared-type touch panel.

In recent years because Portable personal multi-media device flourish, therefore the output of electric resistance touch-control panel also soar, shown in a kind of basic structure cut-open view of commonly using electric resistance touch-control panel of Fig. 1, the basic structure of this contact panel is by two transparent conductive panels 1, and somely is located at constituting every ball 2 between these two transparent conductive panels; Wherein, be positioned at outer field transparent conductive panel 1 mainly has transparent conductive film 3 based on a construction PET base material 4 relatively, this is positioned at 1 glass baseplate 5 that transparent conductive film 3 is arranged based on a construction of transparent conductive panel of internal layer relatively.

When with finger, pen or other medium pressure is touched outer field transparent conductive panel 1 make form depression after, can make two transparent conductive panels, 1 contact of inside and outside layer cause short circuit, and then the variation that produces voltage, transferring digital signal to via the A/D controller again does calculation process by computing machine and obtains (X, Y) shaft position, and then reach the order ground of location.

During general enforcement, this transparent conductive film 3 can be indium tin oxide (Indium Tin Oxide, ITO), and the combination that can utilize pressure-sensing glue 6 to constitute between two transparent conductive panels 1, and be positioned at outer field transparent conductive panel 1 top layer construction one hardening coat 7 relatively, make the anti-scraping ability that increases contact panel.

Yet the transparent conductive panel of commonly using the contact panel internal layer 1 shown in Figure 1 is based on glass baseplate 6, easily the danger of hurting because of glass fragmentation faced; Therefore, promptly there be as shown in Figure 2 second kind to commonly use contact panel and ask the city, this is shown in Figure 2 commonly uses contact panel and mainly has additional a cementing layer 8 relatively between the glass baseplate 5 of the transparent conductive panel 1 of internal layer and transparent conductive film 3 at it, the glass fragment that breaks in order to restriction peels off arbitrarily, with the danger of reduction generation incised wound, but the surface of this cementing layer 8 is not suitable for the construction transparent conductive film.

Therefore must be in addition after the skin of cementing layer 8 be pasted a PET base material 4, again in PET base material 4 surperficial construction transparent conductive films 3, so will make the structure of whole contact panel be tending towards complicated, and can increase the thickness of contact panel relatively, and the transmittance that reduces contact panel.

Moreover, as shown in Figure 3 the third commonly used contact panel and then replaced original glass baseplate by a transparent plastic sheet 9, but because general transparent plastic sheet 9 is with the mode moulding of plastics with roll-forming, its transparent plastic sheet 9 surfaces can produce concavo-convex ripple (as shown in Figure 4) because of the lattice skewness when polymerization, planarization is poor, therefore equally must be in addition after the skin of transparent plastic sheet 9 be pasted a PET base material 4, again in PET base material 4 surperficial construction transparent conductive films 3, still make the structure of whole contact panel be tending towards complicated, increase the thickness of contact panel, and the transmittance that reduces contact panel.

The utility model content

In view of this, the technical matters that the utility model solved is to provide a kind of can effectively promote safety of structure, and reduces structure level number, reduction integral thickness and weight, and improves the touch panel structure provided of transmittance.

Take off purpose on reaching, of the present utility model touch panel structure provided between one first transparent conductive panel and one second transparent conductive panel, be provided with basically some every ball in order to first, second transparent conductive panel is separated; Wherein, by a construction PET base material of transparent conductive film to be arranged be main body to first transparent conductive panel; This second transparent conductive panel then has the transparent plastic substrate of transparent conductive film based on a construction.

The beneficial effects of the utility model are: this transparent plastic substrate penetrates behind the mould of glass material in the plastics injected plastic, utilize the mode of relocatable module relative displacement to compress the die cavity space, prevent that the plastics polymerization from producing concavo-convex ripple, make transparent plastic substrate slimming after the typing, superficial density evenly and have a surface of utmost point low roughness, and be able to directly at this transparent plastic substrate surface construction transparent conductive film, and can directly replace the traditional glass base material, and then promote the safety of structure and the light transmission of contact panel by this plastic basis material.

Because, this transparent plastic substrate does not need to paste in addition the PET base material as the main body that depends on for transparent conductive film, therefore except can directly replacing glass, be unlikely the danger that the glass breakage incised wound takes place, structure level number and the thickness and the weight of whole contact panel have been reduced, the relative transmittance that also improves whole contact panel.

Description of drawings

Fig. 1 is first kind of structure cut-open view of commonly using contact panel;

Fig. 2 is second kind of structure cut-open view of commonly using contact panel;

Fig. 3 commonly uses the structure cut-open view of contact panel for the third;

Fig. 4 commonly uses the central transparent plastic sheet amplification view of contact panel for the third;

Fig. 5 is a touch panel structure provided cut-open view of the present utility model;

Fig. 6 is the amplification view of transparent plastic substrate in the utility model;

Fig. 7 is in order to the ejection shaping die cut-open view of moulding transparent plastic substrate in the utility model;

Fig. 8 is in order to the ejection shaping die of moulding transparent plastic substrate action synoptic diagram in the utility model.

[figure number explanation]

1--transparent conductive panel 2--is every ball

3--transparent conductive film 4--PET base material

5--glass baseplate 6--pressure-sensing glue

7--hardening coat 8--cementing layer

9--transparent plastic sheet 10--first transparent conductive panel

11--PET base material 20--transparent conductive film

The 30--second transparent conductive panel 31--transparent plastic substrate

40--is every ball 50--pressure-sensing glue

60--hardening coat 70--ejection shaping die

71--die cavity 72--relocatable module

Embodiment

Characteristics of the present utility model can be consulted the detailed description of the graphic and embodiment of this case and obtained to be well understood to.

As shown in Figure 5, of the present utility model touch panel structure providedly include at least: one first transparent conductive panel 10, one second transparent conductive panel 30, and some separating balls 40; Wherein:

This first transparent conductive panel 10 has PET (Polyethylene terephthalate) base material 11 of transparent conductive film 20 to be main body by a construction; This second transparent conductive panel 30, there is the transparent plastic substrate 31 of transparent conductive film 20 to be main body by a construction, this transparent plastic substrate 31 is in the process of ejection formation, utilize the mode (i.e. so-called " Outshooting compression shaping ") in compression die cavity space, make that transparent plastic substrate 31 superficial densities after the typing are even, internal stress is little, surfaceness is extremely low and the transparency unanimity, having can be for the utmost point low roughness surface (as shown in Figure 6) of direct construction transparent conductive film 20.As for, these are some is located between this first, second transparent conductive panel 10,30 every ball 40, in order to first, second transparent conductive panel 10,30 is separated.

When implementing, the transparent conductive film 20 of this first, second nesa coating 10,30 is with coating gel, plating, evaporation or sputter indium tin oxide (Indium Tin Oxide, ITO) mode institute construction forms, whole contact panel then is provided with the relative mode of plate face of transparent conductive film 20 with this first, second nesa coating 10,30, utilize pressure-sensing glue 50 to be sticked together combination mutually, and under the effect that separates of ball 40, make transparent conductive film 20 normalities of this first, second nesa coating 10,30 keep a specific interval at each.

The whole touch panel structure provided voltage that can supply further between the transparent conductive film 20 of first, second nesa coating 10,30, to feed 5V, be positioned at outer field first transparent conductive panel, 10 formation depressions relatively by finger or pointer touching, the variation that contacts with second transparent conductive panel 30 of internal layer then and produce voltage, transferring digital signal to via the A/D controller again does calculation process by computing machine and obtains (X, Y) shaft position, and then reach the order ground of location; Certainly, also can make the anti-scraping ability that increases contact panel at lamina rara externa face construction one hardening coat 60 of first transparent conductive panel 10.

Especially, plastic basis material 31 in the middle of the utility model can be made moulding by ejection shaping die as shown in Figure 7, this ejection shaping die 70 is a glass material, except having die cavity 71 in order to moulding plastics base material 31 external forms, its die cavity 71 inwalls further polish the aspect that becomes minimum roughness, are provided with and can closing the relocatable module 72 that continues displacement under the membrane stage at the periphery of die cavity 71; After ejection shaping die 70 matched moulds, and plastics are injected after the die cavity 71, as shown in Figure 8, can utilize the relative displacement of relocatable module 72 further to compress die cavity 71 spaces (being so-called Outshooting compression shaping), prevent that the plastics polymerization from producing concavo-convex ripple, and because of die cavity 71 inwalls be the aspect of minimum roughness, make the transparent plastic substrate slimming after the typing and have the surface of utmost point low roughness, and be able to directly at this transparent plastic substrate surface construction transparent conductive film, replace the traditional glass base material by this plastic basis material, and then promote the safety of structure of contact panel.

Design by said structure, transparent plastic substrate in the middle of the utility model does not need to paste in addition the PET base material as the main body that depends on for transparent conductive film, therefore except direct instead of glass, be unlikely the danger that the glass breakage incised wound takes place, and reduce structure level number and the thickness and the weight of whole contact panel, the relative transmittance that also improves whole contact panel, in addition, impedance when sputter is carried out on utmost point low roughness surface is comparatively stable, and optical index is reduced, improve penetrability.

In sum, it is one preferable feasible touch panel structure provided that the utility model provides, and the application of novel patent is offered in the whence in accordance with the law; Technology contents of the present utility model and technical characterstic the sixth of the twelve Earthly Branches disclose as above, yet the personage who is familiar with this technology still may do various replacement and the modifications that do not deviate from this case utility model spirit based on announcement of the present utility model.Therefore, protection domain of the present utility model should be not limited to those disclosed embodiments, and should comprise various do not deviate from replacement of the present utility model and modifications, and is contained by following claim.

Claims

1, a kind of touch panel structure provided, it is characterized in that, include:

One first transparent conductive panel, by a construction PET base material of transparent conductive film being arranged is main body;

One second transparent conductive panel, by a construction transparent plastic substrate of transparent conductive film being arranged is main body, this transparent plastic substrate is in the process of ejection formation, utilize the mode in compression die cavity space, transparent plastic substrate after the typing is had can be for the utmost point low roughness surface of direct construction transparent conductive film;

Some in order to first, second transparent conductive panel is separated every ball, be located between this first, second transparent conductive panel.

2, as claimed in claim 1 touch panel structure provided, it is characterized in that this first transparent conductive panel is pasted mutually with pressure-sensing glue with this second transparent conductive panel and combined.

3, as claimed in claim 1 touch panel structure provided, it is characterized in that lamina rara externa face construction one hardening coat of this first transparent conductive panel.