CN204009816U

CN204009816U - Contact panel

Info

Publication number: CN204009816U
Application number: CN201420390362.1U
Authority: CN
Inventors: 江耀诚; 吴德发; 严建斌
Original assignee: TPK Touch Solutions Xiamen Inc
Current assignee: TPK Touch Solutions Xiamen Inc
Priority date: 2014-07-15
Filing date: 2014-07-15
Publication date: 2014-12-10
Anticipated expiration: 2024-07-15
Also published as: TWM500925U

Abstract

The utility model provides a kind of contact panel, comprises a shielding layer; And a plurality of circuits, be positioned on this shielding layer, and one end converges to a bonding land for engaging with a circuit board; Wherein, this shielding layer has a hollow out figure and is at least positioned at one of this bonding land side, the contraposition target engaging with this circuit board as those circuits.This practical contact panel providing, on shielding layer, form the contraposition target of hollow out figure to engage with circuit board as contact panel, without making in addition metal contraposition target processed, simplify the structure, accurate contraposition when being conducive to contact panel and engaging with circuit board, improves yield.

Description

Contact panel

Technical field

The utility model relates to a kind of contact panel, and espespecially one can reduce costs and effectively carry out the contact panel of contraposition.

Background technology

Along with the universalness of portable apparatus, be to grow with each passing day as the contact panel demand of man-computer interface in recent years.In general,, no matter be the contact panel of capacitance type touch-control panel, electric resistance touch-control panel or other kenels, all can utilize joint sheet and flexible circuit board to be electrically connected.

Referring to Fig. 1, is a kind of upward view of known contact panel, and this contact panel comprises protective substrate 20, one shielding layers 21 contact panel is distinguished to 10He Fei visible area, visible area 11, a joint sheet 12 and a contraposition target 13.This contact panel makes joint sheet 12 and flexible circuit board (not shown) signal pin corresponding joint one by one by this contraposition target 13, by this, the touching signals of contact panel generation can be passed to flexible circuit board by joint sheet 12, then is connected to controller to carry out touch location calculation by flexible circuit board.

Generally speaking, this contraposition target 13 forms with opaque metal material, for the image detecting device detecting of calibrating position, to carry out flexible circuit board and joint sheet 12 carries out contraposition.But in the time that contact panel comprises material that joint sheet 12 adopts all-transparent for example tin indium oxide forms, because of without metal contraposition target, the image detecting device of calibrating position also cannot be detected the accurate contraposition of transparent joint pad position realization.

Utility model content

Because the problem of above-mentioned prior art, the object of the utility model is providing a kind of contact panel exactly, accurate contraposition can realize contact panel and engage with circuit board time.

The conception of one of the utility model is to propose a kind of contact panel, comprises a shielding layer; And a plurality of circuits, be positioned on this shielding layer, and one end converges to a bonding land for engaging with a circuit board; Wherein, this shielding layer has a hollow out figure and is at least positioned at one of this bonding land side, the contraposition target engaging with this circuit board as those circuits.

Further, more comprise a protective substrate, have light transmission, this shielding layer is positioned at one of this protective substrate surface, and also between those circuits and this protective substrate.

Further, this hollow out graph line of this shielding layer is less than or equal to 30 microns apart from width.

Further, respectively this end of this circuit comprises a joint sheet, and those link testers are crossed those joint sheets and engaged with this circuit board.

Further, more comprise an anisotropy conductive layer between corresponding those joint sheets and this circuit board.

Further, this anisotropy conductive layer more extends and covers this hollow out figure of this shielding layer.

Further, the color of this anisotropy conductive layer is identical or close with the color of this shielding layer.

Further, this anisotropy conductive layer is opaque or black material.

Further, this circuit board is a flexible circuit board.

Further; more comprise a touch electrode structure, this protective substrate is distinguished a non-visible area and a visible area by this shielding layer, and this shielding layer is positioned at this non-visible area; this touch electrode structure is positioned at this protective substrate one side of this visible area, and is electrically connected with those circuits.

Further, this touch electrode structure is single-layer and transparent conductive structure.

Further, the transparent conducting structures that this touch electrode structure comprises multilayer and is mutually electrically insulated.

Further, the material of those circuits and those joint sheets is transparent conductive material.

Further, those circuits all adopt identical transparent conductive material to form with this transparent conducting structures.

This practical contact panel providing, on shielding layer, form the contraposition target of hollow out figure to engage with circuit board as contact panel, without making in addition metal contraposition target processed, simplify the structure, accurate contraposition when being conducive to contact panel particularly all-transparent contact panel engaging with circuit board, improves yield.

Brief description of the drawings

Fig. 1 is the upward view of known contact panel.

Fig. 2 is the contact panel upward view of the utility model.

Fig. 3 is Fig. 2 contact panel profile of the utility model.

Fig. 4 is one of the utility model touch electrode structure schematic diagram.

Embodiment

For profit is understood technical characterictic, content and the advantage of the utility model and the effect that can reach thereof, hereby the utility model is coordinated to accompanying drawing, and be described in detail as follows with the expression-form of embodiment, and wherein used graphic, its purport is only the use of signal and aid illustration book, may not be the true ratio and precisely configuration after the utility model is implemented, thus should not understand, limit to the interest field of the utility model in reality enforcement with regard to appended graphic ratio and configuration relation, close first chat bright.

Below coordinate the embodiment of graphic explanation the utility model; So need be appreciated that, these graphic middle elements that indicate are the clear use of explanation, and it does not represent actual size and ratio, and for asking drawing to be succinctly beneficial to understand, the drafting of also having omitted known element during part is graphic.

Fig. 2 is the contact panel upward view of the utility model, and Fig. 3 is the profile in Fig. 2 cross section 36.Please refer to Fig. 2 and Fig. 3, the utility model system provides a kind of contact panel, this contact panel to comprise a protective substrate 40, a shielding layer 41 and a plurality of circuits 32.

One surface of protective substrate 40 can provide user to touch surface of contact, and another relative surface can arrange touch electrode structure.Protective substrate 40 has good light transmission, can be strengthening substrate or a flexible base plate, also can be the substrate of 2 dimensions, 2.5 dimensions or 3 dimensions.Protective substrate 40 can adopt the transparent insulation materials such as glass, polyimide (PI), polypropylene (PP), polystyrene (PS), acrylonitrile-butadiene-styrene (ABS) (ABS), polyethylene terephthalate (PET), Polyvinylchloride (PVC), polycarbonate (PC), tygon (PE), polymethylmethacrylate (PMMA), teflon (PTFE).

Shielding layer 41 is positioned at one of protective substrate 40 surface; in the present embodiment; shielding layer 41 is to be positioned at surface under protective substrate 40; contact panel is distinguished to a visible area 30 and a non-visible area 31; non-visible area 31 is usually located at least one side of visible area 30; or the element that can need to cover according to it is adjusted its size and position, the present embodiment is that be positioned under visible area 30 side taking non-visible area 31 be example explanation, but not as limit.Shielding layer 41 forms with opaque insulating material conventionally, for example laminated structure material of opaque ink, photoresistance or ink and photoresistance.Shielding layer 41 such as, for covering non-visible area 31 some opaque element, circuit board, circuits etc.

A plurality of circuits 32 are positioned on shielding layer 41, and one end converges to a bonding land 34, and this end that each circuit 32 is positioned at bonding land 34 comprises a joint sheet 35, and circuit 32 engages with a circuit board 44 by joint sheet 35.It should be noted that, the other end of circuit 32 is electrically connected to touch electrode structure, and (figure does not show, be usually located at visible area), by this, the touching signals that touch electrode structure produces can be passed to circuit board 44 by circuit 32, connects controller to carry out touch location calculation by circuit board 44.Circuit 32 can adopt transparent or opaque conductive material to form with joint sheet 35, such as tin indium oxide, silver, copper, molybdenum, aluminium etc.For saving processing procedure or reaching the effect of narrow frame, can adopt the transparent conductive material identical with touch electrode structure in visible area 30 to form in processing procedure.

In addition, shielding layer 41 is also between circuit 32 and protective substrate 40, and shielding layer 41 has a hollow out figure 33, and hollow out figure 33 is at least positioned at one of bonding land 34 side, using the contraposition target engaging with circuit board 44 as circuit 32.In the present embodiment, hollow out figure 33 is taking two and lays respectively at 34 left and right sides, bonding land as example explanation, but not as limit, hollow out figure 33 quantity can be one or more.Hollow out figure 33 is for forming a special pattern by hollow out part shielding layer, for example " L " shape, " mouth " font or " ten " font, and these hollow out figure 33 shapes are identical or complementary with the contraposition target 46 on circuit board 44 conventionally.

When circuit board 44 engages with joint sheet 35, hollow out figure 33 can be used as contraposition target for the image detecting device detecting of calibrating position and carries out contraposition with the contraposition target 46 on circuit board 44, and signal pin 45 corresponding on circuit board 44 can correctly be engaged with joint sheet 35.Particularly, in the time that joint sheet 35 and wire 32 are transparent conductive material and form, without forming separately more opaque metal contraposition target processed, the profile that image detecting device can directly obtain hollow out figure 33 with circuit board 44 on contraposition target 46 carry out contraposition, thereby guarantee that circuit board 44 correctly engages with joint sheet 35.Hollow out figure 33 is preferably line-spacing width and is less than or equal to 30 microns, is beneficial to not be identified by the human eye, and avoids affecting the outward appearance of contact panel.

Please continue to refer to Fig. 3, the contact panel of the utility model further comprises an anisotropy conductive layer 43, between joint sheet 35 and circuit board 44, for being electrically connected joint sheet 35 and circuit board 44.Contact panel receives after a touching signals, by anisotropy conductive layer 43, this touching signals is passed to circuit board 44 by the joint sheet 35 of a plurality of circuits.In one embodiment, anisotropy conductive layer 43 is identical or close with shielding layer 41 colors, be preferably opaque or black, anisotropy conductive layer 43 can only cover bonding land, or further extend and be covered on hollow out figure 33, with the particularly color effects of hollow out figure 33 correspondence positions of compensation shielding layer 41, make hollow out figure 33 field color close or identical with shielding layer 41 other field color, user is visually difficult for finding out that this shielding layer 41 has the pattern of hollow out figure 33, maintains apparent aesthetic feeling.

Referring again to Fig. 2, the contact panel of the utility model more comprises a touch electrode structure 50, and in the present embodiment, touch electrode structure 50 is positioned on the protective substrate 40 of visible area 30, and is positioned at the same side of protective substrate 40 with shielding layer 41.Touch electrode structure 50 specifically can be the transparent conducting structures of single or multiple lift, example as shown in Figure 2, the transparent conducting structures that touch electrode structure 50 is individual layer, comprise a plurality of touch-control electrodes 51, touch-control electrode 51 is spaced in the same direction, and each touch-control electrode 51 is electrically connected with joint sheet 35 by the circuit 32 of correspondence respectively.Touch-control electrode 51 explanation as an example of strip example in the present embodiment, it can also be wave band shape, triangle, comb shape etc.

In addition, touch electrode structure 50 also can be the single-layer and transparent conductive structure shown in Fig. 4, comprise the first electrode 52 and the second electrode 53 that extend in the same direction substantially, the first electrode 52 and the second electrode 53 are the aspect of complementary phase embedding, and the two is electrically insulated mutually, the first electrode 52 and the second electrode 53 are electrically connected to respectively corresponding circuit 54, are electrically connected by circuit 54 and circuit board.Concrete, the first electrode 52 can be set for drive electrode, by coupled circuit 54 input drive signals, and the second electrode 53 is induction electrode, exports induced signal by coupled circuit 54.

It should be noted that, the touch electrode structure 50 of the utility model is not limited to the transparent conducting structures of aforementioned individual layer, also can be the structure of bilayer or multilayer, for example comprise X axis electrode and Y-axis electrode interlaced and insulation, it is other that X axis electrode and Y-axis electrode lay respectively at different layers, adopts substrate or insulation course to separate between the two.

Aforementioned touch-control electrode 51, the first electrode 52, the second electrode 53 and wire 54 all can adopt identical transparent conductive material to form, for example indium tin oxide (indium tin oxide, ITO), indium-zinc oxide (indiumzinc oxide, IZO), fluorine doped tin oxide (fluorine doped tin oxide, FTO), Al-Doped ZnO (aluminium doped zinc oxide, or gallium-doped zinc oxide (gallium doped zinc oxide, GZO) AZO).

In sum, the contact panel that the utility model proposed, on shielding layer, form the contraposition target of hollow out figure to engage with circuit board as contact panel, without making in addition metal contraposition target processed, simplify the structure, accurate contraposition when being conducive to contact panel particularly all-transparent contact panel engaging with circuit board, improves yield.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of making, be equal to replacement, improvement etc., within all should being included in the scope of the utility model protection.

Claims

1. a contact panel, is characterized in that, comprises:

One shielding layer, and

A plurality of circuits, are positioned on this shielding layer, and one end converges to a bonding land for engaging with a circuit board;

Wherein, this shielding layer has a hollow out figure and is at least positioned at one of this bonding land side, the contraposition target engaging with this circuit board as those circuits.

2. contact panel as claimed in claim 1, is characterized in that, more comprises a protective substrate, has light transmission, and this shielding layer is positioned at one of this protective substrate surface, and also between those circuits and this protective substrate.

3. contact panel as claimed in claim 2, is characterized in that, this hollow out graph line of this shielding layer is less than or equal to 30 microns apart from width.

4. contact panel as claimed in claim 2, is characterized in that, respectively this end of this circuit comprises a joint sheet, and those link testers are crossed those joint sheets and engaged with this circuit board.

5. contact panel as claimed in claim 4, is characterized in that, more comprises an anisotropy conductive layer between corresponding those joint sheets and this circuit board.

6. contact panel as claimed in claim 5, is characterized in that, this anisotropy conductive layer more extends and cover this hollow out figure of this shielding layer.

7. contact panel as claimed in claim 6, is characterized in that, the color of this anisotropy conductive layer is identical or close with the color of this shielding layer.

8. contact panel as claimed in claim 7, is characterized in that, this anisotropy conductive layer is opaque or black material.

9. contact panel as claimed in claim 1, is characterized in that, this circuit board is a flexible circuit board.

10. contact panel as claimed in claim 2; it is characterized in that; more comprise a touch electrode structure; this protective substrate is distinguished a non-visible area and a visible area by this shielding layer; this shielding layer is positioned at this non-visible area; this touch electrode structure is positioned at this protective substrate one side of this visible area, and is electrically connected with those circuits.

11. contact panels as claimed in claim 10, is characterized in that, the transparent conducting structures that this touch electrode structure is individual layer.

12. contact panels as claimed in claim 10, is characterized in that, the transparent conducting structures that this touch electrode structure comprises multilayer and is mutually electrically insulated.

13. contact panels as claimed in claim 4, is characterized in that, the material of those circuits and those joint sheets is transparent conductive material.

14. contact panels as described in claim 11 or 12, is characterized in that, those circuits all adopt identical transparent conductive material to form with this transparent conducting structures.