CN202677329U - Touch pad - Google Patents

Abstract

Provided is a touch pad. A color frame is mainly arranged on the outer side of the surface of the bottom of a transparent substrate so as to define a viewable area and a shielding area. A transparent touch control sensor is arranged in the viewable area, and a signal guide wire is arranged in the shielding area. The signal guide wire is electrically connected between the touch control sensor and a connection joint of a signal flat cable. A ring concave area is arranged on the edges of the outer side of the periphery of the substrate, and a plane antenna is arranged on a base wall in the ring concave area. Two ends of the plane antenna are electrically connected with the connection joint of the signal flat cable. The touch pad can maintain smoothness and elegance of the appearance of the touch pad, effectively saves occupation area of the antenna, prevents receiving and sending efficacy of wireless signals of the antenna from being shielded or interfered, and avoids generating optical interference phenomenon.

Description

A kind of touch pad

Technical field

The utility model is relevant a kind of touch pad with antenna, espespecially a kind of flat plane antenna and contact panel is combined as a whole, and makes touch pad have touch-control sensing input and wireless signal transmission-receiving function concurrently.

Background technology

The at present application of wireless communication technology is very extensive, and expands on the various electronic installation, and particularly portable electronic installation possesses the condition that radio communication function has been the product indispensability; And product design trend now, the portable wireless electronic installations such as this class mobile phone, laptop computer and flat computer, except electronic package is equipped with day by day various, day by day variation of function, all tool lightly is convenient to the characteristic carried, and pay attention to the aesthetic property of product shape, so it is unlike the setting of the antenna of radio communication being done outstanding casing in the past, and mostly adopts concealed design;

The portable wireless electronic installations such as present mobile phone, laptop computer and flat computer, lightness and the aesthetic property of exquisite especially product, so its antenna adopts concealed design mostly; Yet because the compact factor of product function variation and external form, so that inside can utilize the space to reduce, cause the design of concealed antenna and the difficulty of assembling aspect, in addition, because the signal receiving/transmission performance of antenna is easy to be subject to metal faced shielding and interference, therefore adopted the electronic product of conceal antenna design in the past, its casing all is to use plastic material or other nonmetallic materials to make, but the common physics or the chemical characteristic that possess of this class material, hardness for example, resistance to impact, corrosion resistance characteristic etc., all incomparable with metal material, and for example color and luster and the surperficial texture of the special tool of metal material, also non-other materials can be simulated, because can not use metal material, causes wireless electron device to be used in the design of casing and suffers many restrictions.

In response to aforesaid drawbacks, the present common practice: for example, the side periphery that carries over electronic product casing arranges a becket frame and uses antenna as, but often can cause serious interference when hand grips or touches this becket frame, causes the wireless signal transmission-receiving function unstable; Again for example, although the shell of some electronic product is the compound substance that adopts metal material or containing metal material, but must change especially the use nonmetallic materials makes at the housing position that conceal antenna is installed, in order to avoid the signal receiving/transmission usefulness of antenna is shielded and is disturbed, but the greatest differences of color and luster and surperficial texture can be caused in the housing position of unlike material, the aesthetic property of the product that seriously detracts; Again for example; the substrate bottom surface that Chinese patent application number 201120398627.9 " Multifunctional touching plate " this case discloses a kind of touch pad arranges touch control induction circuit; and the structure that flat plane antenna is set in outer side edges; but because of this flat plane antenna mutually far short of what is expected with the thickness of the thin layer of touch control induction circuit; so can form one irregular in substrate bottom surface; this result not only causes the processing puzzlement of this touch pad in successive process; for example amplexiform the combination processing of protective seam in the bottom surface; even cause the bent twisting strain of touch pad; in addition; before being installed in display screen, use; if laying out-of-flatness; then can produce the optical interference phenomenons such as Newton ring, cause the show image distortion; the puzzlements such as fuzzy distortion and color distortion.

Summary of the invention

The utility model mainly provides a kind of touch pad, it is hidden flat plane antenna and is arranged at the touch pad bottom surface, make this touch pad except carrying out the touch input by display screen, have simultaneously the effect of radio number transmission concurrently, reduce the space of the shared internal body of antenna, the restriction of avoiding signal to disturb and get rid of the casing material selection; This flat plane antenna is arranged in the depressed area of substrate in addition, makes the touch pad external form smooth, therefore can effectively protect flat plane antenna, and be convenient to installing and using of touch pad.

According to the utility model, touch pad provided by the utility model system comprises a transparent substrate, a color frame, transparent touch sensing and a flat plane antenna; Wherein, outer ledge has the annular recess district around this substrate, and particularly, the cup depth in this annular recess district is 0.02mm to 0.5mm; This color frame is the opaque thin layer that a non-conductive material forms, and its basal surface that is arranged on substrate can be looked forward or upwards district and shielded area to define in the outer ledge position all around; This transparent touch sensing is arranged in looked forward or upwards to the district of this substrate, and in the shielded area of this substrate, be provided with Communication signal wire, this Communication signal wire is electrically connected between aforementioned touch sensing and the signal flat cable contact, the sensor signal that touch sensing is produced can be sent to a signal processing circuit by this Communication signal wire, and this signal processing circuit can be determined touch location by the variation of sensor signal, reaches the function of carrying out the signal input; This flat plane antenna is insulated on the end wall in the annular recess district that is arranged on aforesaid base plate, and makes these flat plane antenna two ends be electrically connected to aforementioned signal flat cable contact, can be in order to transmit or to receive radio signals; Particularly, have at least above interval of 1mm between this flat plane antenna and the aforementioned Communication signal wire, be subject to electromagnetic interference (EMI) to avoid flat plane antenna; The thickness of this flat plane antenna is 0.02mm to 0.5mm, and its material is selected from the alloy of copper, nickel, titanium or previous materials etc., but practical range is not limited with previous materials, and the good material of all kinds of electric conductivity is all applicable.

Because this flat plane antenna is arranged on color frame bottom surface snugly, so can keep planarization and the aesthetic property of touch pad external form, and effectively save the shared space of antenna, and because this color frame is to use non-conductive material, so can avoid the wireless signal transmitting-receiving usefulness of this antenna to be shielded or disturb; And this flat plane antenna is arranged in the depressed area of substrate, make this antenna and touch sensing, Communication signal wire have same height, therefore can form smooth touch pad bottom surface, prevent that the convex plane antenna from easily being scraped damage, and use before making touch pad can smoothly be arranged on display screen, avoid producing the optical interference phenomenon.

This will further illustrate other functions of the present utility model and technical characterictic below, has the knack of and can realize according to this utility model after present technique person pores over explanation in the literary composition.

Description of drawings

Fig. 1 is the planimetric map on the substrate base surface of the utility model embodiment;

Fig. 2 is the side cutaway view of the C--C transversal of Fig. 1; And

Fig. 3 is the side cutaway view of another embodiment of the utility model.

Among the figure:

1, substrate;

12, can look forward or upwards the district;

13, the shielded area;

16, the depressed area;

2, the color frame;

3, touch sensing;

31, X-axis induction stitching;

32, Y-axis induction stitching;

33, Communication signal wire;

4, flat plane antenna;

5, the signal flat cable;

51, signal flat cable contact;

Embodiment:

In Fig. 1, Fig. 2, show a transparent touch pad embodiment, be provided with depressed area 16 and color frame 2 at the basal surface of a substrate 1 along the edge in the outside; Wherein, this substrate 1 is a transparent thin board, and its material can adopt various glass, polycarbonate or polyester etc.; The chemical process means such as the machine cut manufacturing process such as this depressed area 16 can use mill, mill or etching form, and the degree of depth of this depressed area 16 is about 0.02mm to 0.5mm, and better, the degree of depth of this depressed area is about 0.2mm; This color frame 2 is the opaque thin layers that formed by non-conductive material, aforementioned non-conductive material can be selected the materials such as printing ink or photoresistance (photoresist), but enforceable material ranges is not as limit, with previous materials by technological means such as printing, coatings, form the approximately thin layer of 15 μ m of thickness in the basal surface peripheral part of this substrate, define in looked forward or upwards to the district 12 of central part and the shielded area 13 that forms the frame type in the peripheral part at substrate accordingly.

One transparent touch sensing 3 is arranged in looked forward or upwards to the district 12 of this substrate 1 basal surface, in the present embodiment, this touch sensing 3 has the upper of a pair of setting insulated from each other, below capacitive sensing layer, the capacitive sensing layer is provided with a plurality of X-axis induction stitchings (X-Trace) 31 up, and below the capacitive sensing layer establish a plurality of Y-axis induction stitchings (Y-Trace) 32, usually this capacitive sensing layer adopts the transparent membrane of tin indium oxide (ITO) material, utilizes etching or laser processing procedure to remove part not to mark off each X, Y- axis induction stitching 31,32; Be provided with Communication signal wire 33 in these touch sensing 3 outer peripheral edges in addition, and this Communication signal wire is formed in the scope of aforesaid base plate shielded area 13, usually this Communication signal wire is the metal coating that uses the materials such as silver, copper or electric conductivity alloy, forms desired Communication signal wire pattern through the gold-tinted processing procedure in the shielded area at aforesaid base plate; Aforementioned each X-axis and Y-axis induction stitching 31, an ora terminalis of 32 are electrically connected at respectively and are located at this Communication signal wire 33, and these Communication signal wire 33 ends are electrically connected at a signal flat cable contact 51, make accordingly the sensor signal that triggers on this touch sensing 3 via this Communication signal wire 33 and signal flat cable contact 51, be sent to follow-up signal processing circuit (not being shown in drawing) by signal flat cable 5 again; And be that structure with a capacitance touching control device illustrates as example in the above-described embodiments, but its practical range is not limited to this, for example uses electric resistance touch-control device or electromagnetic touch-control device also applicable.

One flat plane antenna 4 is insulated near the outboard peripheries that is arranged at aforementioned Communication signal wire 33 and is positioned on the end wall in aforementioned annular recess district 16; Best, this flat plane antenna 4 is more than 1mm with the setting space of aforementioned Communication signal wire 33, to avoid generate electromagnetic waves each other interference (EMI) or electric wire wave interference (RFI); This flat plane antenna can adopt Copper Foil or aldary thin layer, and its thickness is 0.02mm to 0.5mm, and preferably, the thickness of this flat plane antenna is about 0.2mm; Can use the hot pressing means Copper Foil to be covered on the end wall of this depressed area 16 to form a flat plane antenna; In addition, these flat plane antenna 4 two ends are electrically connected on aforementioned signal flat cable contact 51, in order to be connected to signal feed-in wire and ground wire (not being shown in drawing) by signal flat cable 5.

Comply with the touch pad that above-mentioned explanation forms, its color frame 2 can cover Communication signal wire 33 and the flat plane antenna 4 of this touch sensing fully, and the depressed area 16 of this substrate just can hold the thickness of this flat plane antenna 4, therefore can guarantee planarization and the aesthetic property of touch pad appearance, can avoid these flat plane antenna 4 protuberates during use and be scraped damage, and the display screen that prevents from arranging in pairs or groups produces the optical interference phenomenon when using; This color frame 2 is to use non-conductive material, so can avoid the wireless signal transmitting-receiving effectiveness of this flat plane antenna 4 to be shielded or disturb.

Touch pad of the present utility model is configurable to be used in LCD MODULE, allows the user press the panel desired location, the function of inputting thus to touch by the indication on the LCD MODULE picture; And the setting of this flat plane antenna 4 makes this touch pad except can carrying out touch-control input, but also transmitting/receiving wireless electric wave; In addition, because flat plane antenna 4 is that the occupying volume external space can further not dwindled volume and the thickness of electronic equipment for wireless communication, effectively reaches miniaturization and light-weighted purpose in the hidden depressed area of being located at this substrate base outer side surface edge.

The utility model is not limited to the above form, clearly with reference to after the above-mentioned explanation, improvement and the variation of more technology isotropisms can be arranged, for example: in Fig. 3, show another possible embodiments be with depressed area 16 be located at this substrate 1 the edge than inside line, this can be avoided the shortcoming of the easy embrittlement of this substrate edges; So, all have identical utility model spirit is lower do relevant any modification of the present utility model or change, all must be included in the category of the utility model intention protection.

Claims (5)

1. touch pad, its basal surface outside left at a transparency carrier is provided with the color frame, can look forward or upwards district and a shielded area to define one, can look forward or upwards at this and to establish a transparent touch sensor in district, in this shielded area, be provided with Communication signal wire, Communication signal wire is electrically connected between aforementioned touch sensing and the signal flat cable contact; Its feature exists: outer ledge has the annular recess district around this substrate, and is provided with a flat plane antenna at the end in this annular recess district wall, and makes these flat plane antenna two ends be electrically connected to aforementioned signal flat cable contact.

2. touch pad as claimed in claim 1 is characterized in that, wherein, the material of described flat plane antenna is selected from a kind of in copper, nickel, the titanium.

3. touch pad as claimed in claim 1 is characterized in that, wherein, has at least above interval of 1mm between described flat plane antenna and the aforementioned Communication signal wire.

4. touch pad as claimed in claim 1 is characterized in that, wherein, the cup depth in described annular recess district is 0.02mm to 0.5mm.

5. touch pad as claimed in claim 4 is characterized in that, wherein, the thickness of described flat plane antenna is 0.02mm to 0.5mm.

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