CN201607714U - Capacitor-type touch module - Google Patents

Abstract

The utility model relates to a capacitor-type touch module comprising a first conducting layer, a hard protecting layer and a conducting film; the hard protecting layer is arranged above the first conducting layer; the conducting film is arranged at the upper surface of the hard protecting layer, when a conductor object is contacted with the conducting film, and the conducting film and the first conducting layer generate capacitor coupling phenomenon; and as the area covered by the conducting film can guide current, the capacitor-type touch module can still keep good touch sensitivity when the thickness of the hard protecting layer is increased.

Description

Capacitive touch-control module

Technical field

The utility model relates to a kind of touch-control module, relates in particular to a kind of capacitive touch-control module.

Background technology

Along with scientific-technical progress, it is also more and more universal that PDA(Personal Digital Assistant), mobile phone, dull and stereotyped mobile computer etc. have the electronic installation of touch module, moreover, also have increasing electrical home appliances adopted touch by key technology, touch module on the market can be divided into a plurality of big classes according to its design concept, and wherein the most representative touch-control module is electric resistance touch-control module and capacitive touch-control module.

The electric resistance touch-control module be utilize finger or arbitrarily object push panel surface, make the conductive layer of panel inside produce voltage, and then detect the position that panel surface is pressed; Another is a capacitive touch-control module then, is to utilize finger or conductive body contact surface plate surface arbitrarily, and produces capacitive coupling with the formed electric field of panel conductive layer, absorbing the Weak current of panel surface, and then detects the position that panel surface is touched.

And when the design touch-control module, manufacturer always wishes to design the touch-control module that touch-control is highly sensitive and durability is high, but usually can't achieve one's goal, and for example, sees also Fig. 1, and Fig. 1 is the structural representation for the prior art capacitive touch-control module.Capacitive touch-control module 100 is to comprise glass substrate 11, conductive layer 12, hard protective seam 13 and control module 14; Wherein, conductive layer 12 is that plating invests the upper surface of glass substrate 11, and comprises at least one conductive pattern 121; Hard protective seam 13 is to be arranged on the conductive layer 12; 14 of control modules are electrically connected at conductive pattern 121 by lead 141.

When the user touches hard protective seam 13 in contact area A1 with finger; then finger can produce capacitive coupling with the electric field on conductive pattern 121 surfaces; and control module 14 is promptly detected the position of being touched, yet, because of the computing formula of the inductance capacitance that capacitive coupling produced is $C=\mathrm{\ϵ}\frac{A}{d},$ Wherein C is the inductance capacitance value; ε is the specific inductive capacity of hard protective seam 13; A is the area of contact area A1; d then is the thickness of hard protective seam 13; can know and know; when the material of hard protective seam 13 was fixed and made DIELECTRIC CONSTANT fixedly, the size of inductance capacitance C was to be directly proportional with the area A of contact area A1, and was inversely proportional to the thickness d of hard protective seam 13.

But; usually change little because user's finger touches the contact area A1 of hard protective seam 13; when capacitor-type touch module 100 desires are used the thickness d that needs increase hard protective seam 13 in more abominable service condition; therefore inductance capacitance C promptly can diminish, and makes the touch-control sensitivity of capacitor-type touch module 100 reduce.

Comprehensive the above be inversely proportional to because the size of inductance capacitance C is a thickness d with hard protective seam 13, so the thickness d that increases hard protective seam 13 during with other assembly of protection capacitor-type touch module 100, touch-control sensitivity is therefore reduction then.

Therefore, fundamental purpose of the present utility model is to provide a kind of capacitive touch-control module, to improve the problems referred to above.

The utility model content

Technical matters and purpose that the utility model institute desire solves:

Edge this; fundamental purpose of the present utility model is to provide a kind of capacitive touch-control module; this capacitive touch-control module has the upper surface that at least one conducting film is arranged at this hard protective seam, and the area that can produce coupling capacitance when making capacitive touch-control module be subjected to touching increases.

The technological means that the utility model is dealt with problems:

A kind of capacitive touch-control module comprises:

One first conductive layer, this first conductive layer comprises at least one conductive pattern;

One hard protective seam is arranged at the top of this first conductive layer; And

At least one conducting film is arranged at the upper surface of this hard protective seam;

Wherein, when a conductor object contacted this conducting film, this conducting film promptly produced a capacitive coupling phenomenon with this first conductive layer.

Above-mentioned capacitive touch-control module wherein, also comprises a control module, and this control module utilizes at least one lead to be electrically connected at this conductive pattern.

Above-mentioned capacitive touch-control module, wherein, the area of this conducting film is less than the area of this conductive pattern.

Above-mentioned capacitive touch-control module wherein, also comprises a base material, and this base material is laid in the below of this first conductive layer.

Above-mentioned capacitive touch-control module, wherein, this first conductive layer plating invests the upper surface of this base material.

Above-mentioned capacitive touch-control module, wherein, this base material is a transparent base.

Above-mentioned capacitive touch-control module wherein, also comprises a liquid crystal display layer, and this liquid crystal display layer is arranged at the below of this base material.

Above-mentioned capacitive touch-control module wherein, also comprises one second conductive layer, and this second conductive layer is arranged between this base material and this liquid crystal display layer.

The utility model effect against existing technologies:

Compared to existing capacitive touch-control module; the utility model is provided with the upper surface of conducting film in the hard protective seam; can increase with the area that first conductive layer produces coupling capacitance when making capacitive touch-control module be subjected to touching; and then the increase inductance capacitance, also therefore promote the touch-control sensitivity of capacitive touch-control module and the Thickness Design space of hard protective seam.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.

Description of drawings

Fig. 1 is the structural representation of prior art capacitive touch-control module;

Fig. 2 is the structural representation of the utility model capacitive touch-control module;

Fig. 3 is the structural representation with capacitive touch-control module of liquid crystal display layer; And

Fig. 4 is the structural representation with capacitive touch-control module of a plurality of conducting films.

Wherein, Reference numeral

Capacitive touch-control module 100

Glass substrate 11

Conductive layer 12

Conductive pattern 121

Hard protective seam 13

Control module 14

Lead 141

Contact area A1

Thickness d

Capacitive touch-control module 200,200 '

First conductive layer 21

Conductive pattern 211

Hard protective seam 22

Conducting film 23

Control module 24

Lead 241

Base material 25

Liquid crystal display layer 26

Second conductive layer 27

Contact area A2

Equivalence contact area A2 '

Capacitive touch-control module 300

First conductive layer 31

Conductive pattern 311a, 311b, 311c

Hard protective seam 32

Conducting film 33a, 33b, 33c

Control module 34

Lead 341a, 341b, 341c

Embodiment

The utility model is about a kind of touch-control module, refers to a kind of capacitive touch-control module especially.Below enumerate a preferred embodiment now with explanation the utility model, right those skilled in the art know that all this only is one for example, and are not in order to limit utility model itself.The detailed description of relevant this preferred embodiment is as follows.

See also Fig. 2, Fig. 2 is the structural representation for the utility model capacitive touch-control module.Capacitive touch-control module 200 comprises first conductive layer 21, hard protective seam 22 and conducting film 23; Wherein, first conductive layer 21 comprises at least one conductive pattern 211; Hard protective seam 22 is the tops that are arranged at first conductive layer 21, and the preferably in present embodiment, and first conductive layer 21 can be the lower surface that plating invests hard protective seam 22; Conducting film 23 is the upper surfaces that are arranged at hard protective seam 22, and the preferably in present embodiment, and conducting film 23 is upper surfaces that plating invests hard protective seam 22.

Further, capacitive touch-control module 200 can also comprise control module 24, control module 24 is to utilize at least one lead 241 to be electrically connected at conductive pattern 211, so as to detecting the Weak current that is produced when capacitive touch-control module 200 is subjected to conductor object (figure does not show) touching.

For example, when the conductor object contacts conducting film 23 in contact area A2, the conductor object then can produce the capacitive coupling phenomenons by the equivalent contact area A2 ' of whole conducting film 23 and the conductive pattern 211 of first conductive layer 21, wherein equivalent contact area A2 ' is the zone at conducting film 23 places, and the area of the preferably's conducting film 23 in present embodiment is the areas that are less than or equal to conductive pattern 211.

By above-mentioned can know for example know; capacitive touch-control module 100 compared to prior art; if the user touches capacitive touch-control module 200 with finger; then contact area A1 is identical with the area of contact area A2; yet because the zone at conducting film 23 places all can conduct charges; therefore user's finger is to produce the capacitive coupling phenomenon by equivalent contact area A2 ' with conductive pattern 211; and the area of equivalent contact area A2 ' is the area greater than contact area A2; therefore; when the hard protective seam in hard protective seam in the capacitive touch-control module 100 of prior art 13 and the capacitive touch-control module 200 22 adopts identical material and same thickness, by the computing formula of inductance capacitance $C=\mathrm{\ϵ}\frac{A}{d}$ Can know that capacitive touch-control module 200 is touched the inductance capacitance that is produced and touched the inductance capacitance that is produced greater than the capacitive touch-control module 100 of prior art.

Comprehensive the above; because when the user touches capacitive touch-control module 200 with finger; user's finger is to produce the capacitive coupling phenomenon by equivalent contact area A2 ' with conductive pattern 211; therefore can produce bigger inductance capacitance; change to say it; can have preferable touch-control sensitivity, and, then can adopt thicker hard protective seam 22 if will obtain touch-control sensitivity same as the prior art.

Please continue to consult Fig. 3, Fig. 3 is the structural representation for the capacitive touch-control module with liquid crystal display layer.Different with last embodiment is that the capacitive touch-control module 200 ' of present embodiment can also have base material 25, liquid crystal display layer 26 and second conductive layer 27; Wherein, base material 25 is the belows that are laid in first conductive layer 21, and the preferably in present embodiment, and first conductive layer 21 is upper surfaces that plating invests base material 25, and further, base material 25 can be the transparent base of glass material; Liquid crystal display layer 26 is the belows that are arranged at base material 25, and second conductive layer 27 then is arranged between base material 25 and the liquid crystal display layer 26, so as to preventing disturbance of electronic signal.

Please continue to consult Fig. 4, Fig. 4 is the structural representation for the capacitive touch-control module with a plurality of conducting films.Capacitive touch-control module 300 has first conductive layer 31, hard protective seam 32, a plurality of conducting film 33 and control module 34; Wherein first conductive layer 31 can have a plurality of conductive pattern 311a, 311b and 311c, and conducting film 33a, 33b are corresponding with conductive pattern 311a, 311b and 311c respectively with the position of 33c; In addition, 34 of control modules pass through lead 341a, 341b and 341c and conductive pattern 311a, 311b and 311c electrically connect.

Can know by above-mentioned three embodiment and to know that capacitive touch-control module of the present utility model has preferable touch-control sensitivity and bigger hard protective layer thickness design space compared to the capacitive touch-control module of prior art.In addition, capacitive touch-control module of the present utility model also can be applicable to the capacitance touching control fields such as touch-control module of capacitance touch control screen and multipoint mode except being applied to the field of capacitance type touch control keys.

Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.

Claims (8)

1. a capacitive touch-control module is characterized in that, comprises:

One first conductive layer, this first conductive layer comprises at least one conductive pattern;

One hard protective seam is arranged at the top of this first conductive layer; And

At least one conducting film is arranged at the upper surface of this hard protective seam;

Wherein, when a conductor object contacted this conducting film, this conducting film promptly produced a capacitive coupling phenomenon with this first conductive layer.

2. capacitive touch-control module according to claim 1 is characterized in that, also comprises a control module, and this control module utilizes at least one lead to be electrically connected at this conductive pattern.

3. capacitive touch-control module according to claim 1 is characterized in that the area of this conducting film is less than the area of this conductive pattern.

4. capacitive touch-control module according to claim 1 is characterized in that, also comprises a base material, and this base material is laid in the below of this first conductive layer.

5. capacitive touch-control module according to claim 4 is characterized in that, this first conductive layer plating invests the upper surface of this base material.

6. capacitive touch-control module according to claim 4 is characterized in that, this base material is a transparent base.

7. capacitive touch-control module according to claim 6 is characterized in that, also comprises a liquid crystal display layer, and this liquid crystal display layer is arranged at the below of this base material.

8. capacitive touch-control module according to claim 7 is characterized in that, also comprises one second conductive layer, and this second conductive layer is arranged between this base material and this liquid crystal display layer.

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