CN102279688A - Conducting circuits for resistance type touch screen with multi-point touch control - Google Patents

Abstract

The invention discloses conducting circuits for a resistance type touch screen with a multi-point touch control function. The conducting circuits for the touch screen are attached to four sides of an upper conducting layer (1) and a lower conducting layer (2) of the touch screen, the conducting circuits of the upper conducting layer (1) and the lower conducting layer (2) of the touch screen are respectively designed to be two layers, and the conducting circuits in two layers are independently and respectively connected with transparent conducting thin film strips, and an insulating point layer (3) is provided between the two layers of conducting circuits. The conducting circuits in the invention can solve difficulty of preparing a plurality of conducting circuits in a limited space in a non-window region of the touch screen, enlarge the window width of the touch screen, and improve the production yield rate of the touch screen.

Description

Multi-touch resistance-type touch-screen conducting wire

Technical field

The present invention relates to prepare resistive touch screen with multi-point touch function with screen printing technique.

Background technology

Touch-screen is a kind of remarkable input equipment that improves man machine operation interface, have intuitively, simply, advantage efficiently.Along with development of electronic technology, the use of touch screen is more and more general.In the past, various types of touch-screens constantly occur, and comprise resistance-type, condenser type, infrared and surface acoustic wave type touch-screen.Wherein, resistive touch screen becomes the market mainstream because of it is with low cost.In the recent period, the capacitive touch screen technology develops to some extent, can discern its surperficial multiple point touching simultaneously, is convenient to the user by the light multiple complicated operations that realizes file, recreation of simple action, has the multi-point touch function, and is more and more very popular.But the real user of capacitive touch screen is less, and main cause is that it costs an arm and a leg and present touch-screen manufacturer can not adopt prior art to hatch the technology of preparing of this class touch-screen.Although the cost of resistive touch screen is lower, resistive touch screen can only be discerned its surperficial single-point touches, even there is multiple point touching, also can only provide a touch point coordinate to main frame, has certain limitation, can not satisfy the demands of consumers.If resistive touch screen is handled by it being made subregion, in conjunction with specific signal scanning and data processing, can discern its surperficial multiple point touching, various touch functions and effect with capacitive touch screen, and existing touch-screen manufacturer do not need to drop into any new production equipment can this class touch-screen of volume production, then have the great significance for popularization.

It is to realize by following process that subregion with resistive touch screen of multi-point touch function is handled: the transparent conductive film of the last conductive layer of touch-screen is etched into is parallel to each other and film tape insulated from each other, the transparent conductive film of lower conductiving layer is etched into is parallel to each other and film tape insulated from each other, the film tape of last conductive layer is vertical mutually with the film tape of lower conductiving layer, and all film tapes in the upper and lower conductive layer all are independently to be connected with touch screen controller by the conducting wire with all interior film tape two ends of lower conductiving layer.In order to improve the ability of touch-screen identification multiple spot, need reduce the width of film tape, avoid two touch points to be positioned at a film tape, increased the film tape quantity in the upper and lower conductive layer like this, therefore, the conducting wire quantity of this class touch-screen is bigger.The technology of preparing of general resistive touch screen is serigraphy, its printing precision is generally 0.1mm, more conducting wire can increase the width of the non-window area of touch-screen, dwindles the width of window area, and this does not meet the trend of the touch-screen of the narrow frame of development, and, in the preparation of this class touch-screen, many bad problems that opens circuit can appear in the conducting wire of serigraphy 0.1mm width, and the width of conducting wire is too narrow, its resistance is big more, can influence the linearity of touch-screen.Therefore in the production of reality, the width of conducting wire can be greater than 0.1mm, and this will further dwindle the width of window area.Therefore, adopt screen printing technique to prepare the resistive touch screen with multi-point touch function, and do not influence the form width of touch-screen, the yield of guarantee touch-screen is one problem to be solved.

Summary of the invention

In view of adopting the screen printing technique preparation, the resistive touch screen with multi-point touch function has the problems referred to above, the invention provides a kind of conducting wire method for designing with resistive touch screen of multi-point touch function, make the preparation of such touch-screen can adopt the screen printing technique manufacturing, production cost is low.

For realizing above-mentioned target, conducting wire of the present invention method for designing all is designed to two-layerly for the conducting wire in the upper and lower conductive layer of resistive touch screen that will have the multi-point touch function, middlely separates with insulation course, avoids short circuit.

A kind of conducting wire with resistive touch screen of multi-point touch function, it is characterized in that, resistive touch screen has the multi-point touch function, all be to be parallel to each other and transparent conductive film bar insulated from each other in its upper and lower conductive layer, but the transparent conductive film bar of last conductive layer is vertical mutually with the transparent conductive film bar of lower conductiving layer, its edges at two ends is connected with the conducting wire, and wherein the conducting wire is designed to two-layerly respectively, has a layer insulating between two-layer.

Wherein, described conducting wire with resistive touch screen of multi-point touch function is characterized in that, described conducting wire is positioned at the non-window area of touch-screen.

Wherein, described conducting wire with resistive touch screen of multi-point touch function is characterized in that, the technology of preparing of described conducting wire and insulation course is serigraphy.

Wherein, described conducting wire with resistive touch screen of multi-point touch function, it is characterized in that described conducting wire is for only being designed to two-layer conducting wire or only being designed to two-layer conducting wire in lower conductiving layer or upper and lower conductive layer is designed to two-layer conducting wire simultaneously in last conductive layer.

Resistive touch screen of the present invention conducting wire method for designing has following advantage:

Solved the interior design of the finite space multiply conducting wire problem of the non-window area of resistive touch screen of multi-point touch function, the preparation of this class touch-screen can be prepared by screen printing technique, avoid adopting the high precision manufacturing equipment, and, can suitably reduce the precision of the width of conducting wire, ensure the production yield and the linear characteristic of touch-screen.

Description of drawings

Fig. 1 is the core texture of multi-touch resistance-type touch-screen;

Fig. 2 is multi-touch resistance-type touch screen transparent conductive film bar and conducting wire;

Fig. 3 is a multi-touch resistance-type touch-screen upper and lower conductive layers constitutional diagram;

Fig. 4 is along A-A ' cross section enlarged drawing among Fig. 3;

Fig. 5 is the structural drawing of embodiment one;

Fig. 6 is the structural drawing of embodiment two.

Embodiment

In order to describe content of the present invention in detail, the present invention will be further described below in conjunction with specification drawings and specific embodiments, but the scope that the present invention protected is not limited thereto.Clear for the ease of the present invention is narrated, size among the figure and part-structure have carried out processing and amplifying.

The present invention relates to prepare resistive touch screen with multi-point touch function with screen printing technique.Fig. 1 is the core texture of multi-touch resistance-type touch-screen, comprises conductive layer (1), lower conductiving layer (2), insulating point layer (3), conducting wire plate (4) and touch screen controller (5).Fig. 2, the upper surface of the lower surface of conductive layer on it (1) and lower conductiving layer (2) are that etched many of forming are parallel to each other and transparent conductive film bar (6) transparent conductive film bar (7) and conducting wire, the conducting wire that is connected them (8) (9) insulated from each other.The transparent conductive film bar (7) of wherein going up the transparent conductive film bar (6) of conductive layer and lower conductiving layer is vertical mutually, and their direction can be exchanged.Conducting wire, conducting wire (8) (9) is positioned at non-window area, touch-screen edge.Because the quantity of conducting wire is more, and the precision of serigraphy is limited and produce the yield problem, and the non-window area area that needs to increase touch-screen is to hold the multiply conducting wire, and this mode has been sacrificed the touch screen window region area.Fig. 3 is the upper and lower conductive layer combination figure with multi-touch resistance-type touch-screen.Fig. 4 be among Fig. 3 along A-A ' cross section enlarged drawing, there are three conducting wires (8) in last conductive layer surface, there are 7 conducting wires (9) in the lower conductiving layer surface.After the upper and lower conductive layers combination of touch-screen, the short circuit of conducting wire, all there is a layer insulating (10) insulation course (11) in the surface of conducting wire, and for fixing upper and lower conductive layers, there is one deck tack coat (12) tack coat (13) in the surface element of insulation course.In order not increase the area of non-window area, the conducting wire that the present invention will go up in conductive layer, the lower conductiving layer is designed to two-layer, reduce the quantity of conducting wire in every layer of conducting wire layer, ensure and do not increase the area of non-window area, can increase simultaneously the width of every conducting wire in the conductive layer, can ensure the yield of production, reduce the resistance of conducting wire and have better linearity.

Embodiment one

As shown in Figure 5, three conducting wires of last conductive layer shown in Figure 4 being designed to two-layer, comprising two conducting wires (81) and a conducting wire (82) respectively in two-layer, is a layer insulating (101) between the two-layer conducting wire; 7 conducting wires of lower conductiving layer being designed to two-layer, comprising 4 conducting wires (91) and 3 conducting wires (92) respectively in two-layer, is an insulation course (111) between the two-layer conducting wire.(82) and conducting wire (92) short circuit for fear of the conducting wire, all there is an insulation course (102) insulation course (112) in its surface; For fixing upper and lower conductive layer, there is one deck tack coat (12) tack coat (13) in insulation course (102) insulation course (112) surface.From figure, can demonstrate, the width of conducting wire, conducting wire, conducting wire, the conducting wire of last conductive layer and lower conductiving layer (81) (82) (91) (92) all increases, can guarantee to adopt serigraphy like this, the electric conductivity of circuit is good, and can avoid a lot of production bad, improve the yield of product.After double-layer structure is adopted in the conducting wire, can dwindle the width of non-window area, increase the width of window area, meet the development trend of narrow frame touch-screen.

Embodiment two

As shown in Figure 6, only 7 conducting wires (9) of lower conductiving layer shown in Figure 4 being designed to two-layerly, comprising 4 conducting wires (91) and 3 conducting wires (92) respectively in two-layer, is an insulation course (111) between the conducting wire, conducting wire (91) (92); And 3 conducting wires (8) of going up conductive layer are still designed in one deck, because enough 3 conducting wires of width design are arranged.

Claims (4)

1. conducting wire with resistive touch screen of multi-point touch function, it is characterized in that, resistive touch screen has the multi-point touch function, all be to be parallel to each other and transparent conductive film bar insulated from each other in its upper and lower conductive layer, but the transparent conductive film bar of last conductive layer is vertical mutually with the transparent conductive film bar of lower conductiving layer, its edges at two ends is connected with the conducting wire, and wherein the conducting wire is designed to two-layerly respectively, has a layer insulating between two-layer.

2. the conducting wire with resistive touch screen of multi-point touch function as claimed in claim 1 is characterized in that, described conducting wire is positioned at the non-window area of touch-screen.

3. the conducting wire with resistive touch screen of multi-point touch function as claimed in claim 1 is characterized in that, the technology of preparing of described conducting wire and insulation course is serigraphy.

4. the conducting wire with resistive touch screen of multi-point touch function as claimed in claim 1, it is characterized in that described conducting wire is for only being designed to two-layer conducting wire or only being designed to two-layer conducting wire in lower conductiving layer or upper and lower conductive layer is designed to two-layer conducting wire simultaneously in last conductive layer.

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