CN201247461Y

CN201247461Y - Improved capacitive touch control plate structure

Info

Publication number: CN201247461Y
Application number: CNU2008201317292U
Authority: CN
Inventors: 林德铮
Original assignee: Young Fast Optoelectronics Co Ltd
Current assignee: Young Fast Optoelectronics Co Ltd
Priority date: 2008-07-21
Filing date: 2008-07-21
Publication date: 2009-05-27
Anticipated expiration: 2018-07-21

Abstract

An improved capacitive touch pad structure, comprising a substrate layer, an induction layer, an insulation layer and a surface layer, wherein: the substrate layer is an insulating thin layer with high light transmittance; the induction layer is a transparent film with good conductive property, and comprises a plurality of X-axis traces which are arranged in an X-axis equidistant manner and are arranged in parallel and a plurality of Y-axis traces which are arranged in a Y-axis equidistant manner and are arranged in parallel, and the X-axis traces and the Y-axis traces are arranged on the same plane; the insulating layer is a light-transmitting insulating thin layer and is provided with a plurality of pairs of through holes, and the positions of the through holes in pairs just correspond to the positions of the two adjacent induction units in the Y-axis trace respectively; the surface layer is an insulating plate with light transmission.

Description

Modified capacitance touching control plate structure

Technical field

The utility model relates to a kind of touch pad structure, specifically, is that a kind of X-axis and Y-axis induction stitching (Trace) is provided with capacitive touch control plate at grade.

Background technology

Known capacitance formula touch pad structure comprises an X-axis inductive layer and a Y-axis inductive layer, be arranged in the touch-control plate body with making X, the insulation of Y-axis inductive layer, and with X, Y-axis inductive layer ground connection and be connected to a control circuit respectively, during running, the moment that finger or conductor by the user touches produces capacity effect, thereby is determined the position of finger or conductor by capacitance variation.Because capacitive touch control plate can be imported with finger, convenience with input operation, and its input operation need be through not pressing, can not allow panel have to bear alternate stress, distortion to cause the shortcoming of damaging, and the composition of this Trackpad is simple in structure, assembly is few, product fine rate height, and be fit to produce to reduce cost in a large number.But, because known capacitance formula Trackpad is respectively X, Y-axis induction stitching to be located on two different planes, therefore in the procedure for producing of Trackpad, when being arranged on two X, Y-axis induction stitchings on the Different Plane and repeatedly connecing combination, regular meeting has the inaccurate phenomenon of contraposition to take place, and causes the susceptibility of capacitive sensing signal of Trackpad and the problem that degree of accuracy reduces; In addition, because the decorative pattern of stitching portion that forms on different separately planes and non-stitching portion (being hollow-out parts) has different transmittances, its result can cause the light refraction inequality that penetrates panel, will cause screen deformation of image, fuzzy distortion.

Therefore known capacitance touching control plate structure exists above-mentioned all inconvenience and problem.

Summary of the invention

The purpose of this utility model, be to propose a kind of with X axis and Y-axis to induction stitching (Trace) at grade modified capacitance touching control plate structure is set.

For achieving the above object, technical solution of the present utility model is:

A kind of modified capacitance touching control plate structure comprises a basalis, an inductive layer, and an insulation course and a superficial layer is characterized in that:

Described basalis is the insulativity thin layer of high transmission rate;

Described inductive layer, for having the transparent membrane of good conductive characteristic, contain plural X axis equidistant placement and the X-axis stitching that is arranged in parallel with each other and plural Y-axis to equidistant placement and the Y-axis stitching that is arranged in parallel with each other, and described X-axis stitching and Y-axis stitching are set up at grade, and being matrix form is crisscross arranged, wherein, each sensing unit that is arranged on indivedual X-axis stitchings is to be connected to each other, each sensing unit that is arranged on indivedual Y-axis stitchings then is disconnected spaced each other, and the front end of described each X-axis stitching and Y-axis stitching is respectively equipped with contact;

Described insulation course, insulativity thin layer for light transmission, and be provided with the paired through hole of plural number, the position of described each paired through hole corresponds respectively to described on each two adjacent sensing unit of Y-axis stitching just, and respectively described each surface above between the through hole striden establish an electrical lead, described electrical lead two ends are open among described through hole and form electricity and meet portion;

Described superficial layer is the insulativity sheet material of tool light transmission;

Wherein, when combination, described insulation course is covered in described inductive layer top, cover the X-axis stitching and the Y-axis stitching of described inductive layer with insulation, and the two end electricity that make each electrical lead on the described insulation course connect portion by described through hole respectively the electricity be connected on each two adjacent sensing unit of the Y-axis stitching on the described inductive layer, electricity is logical in succession each other to make described each sensing unit on indivedual Y-axis stitchings, and described each layer in regular turn each other the gummed change into a transparent plate body after, the front edge contact that makes each X-axis stitching on the described inductive layer and Y-axis stitching electricity respectively is connected to the silver-colored guide passage that is arranged on face plate edge, and connect to signal output winding displacement, make the induced signal of described capacitive touch control plate be sent to follow-up signal processing circuit via described signal output winding displacement.

Modified capacitance touching control plate structure of the present utility model can also be further achieved by the following technical measures.

Aforesaid modified capacitance touching control plate structure, wherein said insulation course adopt dielectric coefficient to be about 2～4 high transmission rate insulativity layer material.

Aforesaid modified capacitance touching control plate structure, wherein said high transmission rate insulativity layer material is printing ink or mylar.

Aforesaid modified capacitance touching control plate structure, wherein said electrical lead is transparent organic conductive material.

Aforesaid modified capacitance touching control plate structure, wherein said electrical lead is the transparent conductive film of tin indium oxide material.

After adopting technique scheme, modified capacitance touching control plate structure of the present utility model has the following advantages:

1. the laying style of stitching is neatly regular.

2. promote the susceptibility and the degree of accuracy of Trackpad induction usefulness.

3. can significantly reduce the ratio of the non-stitching portion (being hollow-out parts) on the described inductive layer.

4. improve video picture quality at the display screen of described Trackpad bottom.

Description of drawings

Fig. 1 is that member of the present utility model separates stereographic map;

Fig. 2 is the part front view (FV) of insulation course of the present utility model and inductive layer combination;

Fig. 3 is along the side cut-away view of E-E transversal among Fig. 2.

Embodiment

Below in conjunction with embodiment and accompanying drawing thereof the utility model is illustrated further.

Now see also Fig. 1～Fig. 3, Fig. 1 is that member of the present utility model separates stereographic map, and Fig. 2 be the part front view (FV) that insulation course of the present utility model and inductive layer make up, and Fig. 3 is along the side cut-away view of E-E transversal among Fig. 2.As shown in the figure, embodiment of the present utility model is the capacitive touch control plate of the transparent plate body of a tool, is mainly gluedd joint to coincide each other in regular turn by a subbase 1, an inductive layer 2, an insulation course 3 and a superficial layer 4 to form; Wherein, described subbase 1 and superficial layer 4 are the insulativity thin layer sheet material of a high transmission rate, for example be glass, polycarbonate (Polycarbonate, PC), polyester (Polythylene terephthalate, PET), polymethylmethacrylate (polymethylmethacrylate, PMMA) or the membraneous material of cycloolefin co-polymer (Cyclic OlefinCopolymer); Described inductive layer 2 then can be selected transparent conductive film for use, for example be tin indium oxide (Indium Tin Oxide), or transparent organic conductive material film, it for example is poly-enedioxy thiophene (PEDOT), the transparent X-axis stitching (Trace) 21 that described inductive layer 2 contains most X axis equidistant placement and is arranged in parallel with each other, and most Y-axis are to equidistant placement and the transparent Y-axis stitching 22 that is arranged in parallel with each other, and X-axis stitching 21 is matrix form with Y-axis stitching 22 and is crisscross arranged, wherein, each sensing unit (induction-spot) 21a that is arranged on described indivedual X-axis stitching is connected with each other logical, each sensing unit 22a that is arranged on described indivedual Y-axis stitching 22 then is disconnected spaced each other, preferred described

stitching

21,22 width are about 0.05～5mm usually, line end at X-axis stitching 21 has stitching contact 24, line end at Y-axis stitching 22 has stitching contact 25, described

stitching contact

24,25 can be respectively electricity be connected to the silver-colored guide passage 7a of face plate edge, 7b, and be connected to described signal output winding displacement (not being shown in drawing), make the induced signal of X-axis stitching 21 and Y-axis stitching 22 on the described inductive layer 2 be sent to a follow-up signal treatment circuit (not being shown in drawing) in view of the above via described signal output winding displacement; Described insulation course 3 adopts dielectric coefficients (permittivity) to be about 2～4 and the insulativity layer material of tool high transmission rate, the for example printing ink or the mylar of high transmission rate, and described insulation course is provided with the paired through hole 31 of plural number, it is described on each two adjacent sensing unit 22a of Y-axis stitching that each position to through hole 31 just can be corresponded respectively to, and respectively at each surface, the insulation course between through hole top is striden and to establish an electrical lead 32, described electrical lead 32 2 ends are open in described through hole 31 and form electricity and meet the 32a of portion, wherein, described electrical lead 32 can be selected transparent organic conductive material for use, for example is poly-enedioxy thiophene; During combination, described inductive layer 2 tops are located in described insulation course 3 linings, cover with 22 insulation of Y-axis stitching with X-axis stitching 21 described inductive layer, and the two end electricity that make each electrical lead on the described insulation course 3 connect the 32a of portion by described through hole 31 respectively the electricity be connected on each two adjacent sensing unit 22a of the Y-axis stitching on the described inductive layer 2, electricity is logical in succession each other to make each sensing unit 22a on indivedual Y-axis stitchings 22 thus, thereby X-axis stitching 21 and Y-axis stitching 22 are set on the plane of same inductive layer.

Setting as said structure, between X-axis stitching 21 and silver-colored guide passage 7a, form an equivalent capacity, between Y-axis stitching 22 and silver-colored guide passage 7b, also there is an equivalent capacity, therefore when finger or conductor touches or gently slip over Trackpad when surperficial, signal processing circuit can be judged the touch location of conductor or finger by changes in capacitance.Before transparent touch plate of the present utility model in view of the above can be configured in the display screen of electronic product, the user can be touched in the panel desired location with finger by the indication on the screen-picture, can facility carry out input operation.And the capacitive touch control plate of the utility model embodiment with X axis and Y-axis to the induction stitching be arranged on the same plane, can make the installation position of respectively responding to stitching accurate, promote the susceptibility and the degree of accuracy of capacitive sensing usefulness; In addition, the two is tessellated square crossing mutually and arranges to stitching 22 for the X axis stitching 21 of the utility model embodiment and Y-axis, and be formed on the plane of same inductive layer, not only the laying style of stitching is neatly regular, and significantly reduce the ratio of the non-stitching portion (being hollow-out parts) on the described inductive layer, therefore can bring up the comparatively transmittance of homogeneous, improve video picture quality at the display screen of described Trackpad bottom.

Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique under the situation that does not break away from spirit and scope of the present utility model, can also be made various conversion or variation.Therefore, all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.

Claims

1. An improved capacitive touch panel structure, comprising a base layer, an induction layer, an insulating layer and a surface layer, characterized in that:

The base layer is an insulating thin layer with high light transmittance;

The sensing layer is a transparent film with good electrical conductivity, comprising a plurality of X-axis traces arranged equidistantly in the X-axis and parallel to each other, and a plurality of Y-axis traces arranged equidistantly in the Y-axis and arranged parallel to each other, and the The X-axis traces and the Y-axis traces are arranged on the same plane, and are arranged in a matrix interlaced manner, wherein the induction units arranged on individual X-axis traces are connected to each other, and each induction unit arranged on individual Y-axis traces The units are not connected to each other and are arranged at intervals, and the front ends of the X-axis traces and the Y-axis traces are respectively provided with contacts;

The insulating layer is a light-transmitting insulating thin layer, and is provided with a plurality of pairs of through-holes, and the positions of the pairs of through-holes are exactly corresponding to the two adjacent ones on the Y-axis trace. on the induction unit, and respectively straddle an electric wire on the upper surface between the pairs of through-holes, and the two ends of the electric wire are exposed in the through-holes to form an electrical connection;

The surface layer is a light-transmitting insulating board;

Wherein, when combined, the insulating layer is covered above the sensing layer to insulate and cover the X-axis trace and the Y-axis trace of the sensing layer, and make the two ends of each electric wire on the insulating layer electrically The connecting parts are respectively electrically connected to two adjacent sensing units of the Y-axis trace on the sensing layer through the through holes, so that the respective sensing units on the individual Y-axis traces are electrically connected to each other, and After the layers are glued to each other in order to form a transparent board, the front-end contacts of the X-axis traces and Y-axis traces on the sensing layer are respectively electrically connected to the silver guides arranged on the edge of the panel, and then connected to the A signal output cable enables the sensing signal of the capacitive touch panel to be transmitted to a subsequent signal processing circuit through the signal output cable.

2. The improved capacitive touch panel structure according to claim 1, characterized in that the insulating layer is made of a high light transmittance insulating thin layer material with a dielectric coefficient of about 2-4.

3. The improved capacitive touch panel structure according to claim 2, characterized in that the insulating thin layer material with high light transmittance is ink or polyester film.

4. The improved capacitive touch panel structure according to claim 1, characterized in that the electrical wire is a transparent organic conductive material.

5 . The improved capacitive touch panel structure according to claim 1 , wherein the electrical wire is a transparent conductive film made of indium tin oxide.