CN201638198U

CN201638198U - Resistive touch screen

Info

Publication number: CN201638198U
Application number: CN2010201500717U
Authority: CN
Inventors: 李加良
Original assignee: BYD Co Ltd
Current assignee: Shenzhen Holitech Optoelectronics Co Ltd
Priority date: 2010-03-30
Filing date: 2010-03-30
Publication date: 2010-11-17
Anticipated expiration: 2020-03-30

Abstract

The utility model provides a resistive touch screen which comprises an upper line conducting layer, an upper line elargol layer, insulating layers, a viscose layer, an FPC (Flexible Printed Circuit), a lower line elargol layer and a lower line conducting layer, wherein the upper line elargol layer is arranged on the upper line conducting layer; the lower line elargol layer is arranged on the lower line conducting layer; the insulating layers respectively cover the upper line elargol layer and the lower line elargol layer; the upper line conducting layer and the lower line conducting layer are adhered by the viscose layer and connected to the FPC respectively by the upper line elargol layer and the lower line elargol layer and respectively comprise two elargol lines; the two elargol lines of the upper line elargol layer and the lower line elargol layer are bent in a clearance shape to form a Z shape. The utility model solves the problems of general unevenness, air holding and leakage, and the like on the surface of the traditional resistive touch screen and has good air tightness and the surface smoothness.

Description

A kind of resistive touch screen

Technical field

The utility model relates to a kind of resistive touch screen.

Background technology

In recent years the market demand of touch-screen continues to rise, and main its principle of resistive touch screen and structure are all fairly simple, and adaptability is strong, and is not high to software requirement, and versatility is good, has obtained being widely used in each field.

As shown in Figure 1, in the manufacture craft of touch-screen, existing structure comprises surface decoration layer, optical lens gelatin, the conductive layer 1 of reaching the standard grade, the elargol layer 2 of reaching the standard grade, flexible printed circuit board 3 (Flexible PrintedCircuit is called for short FPC), insulation course 4, mucigel, the elargol layer 5 that rolls off the production line, the conductive layer 6 that rolls off the production line, optical lens gelatin, back up pad.Wherein, reach the standard grade elargol layer 2 silk-screen on the conductive layer 1 of reaching the standard grade, roll off the production line conductive layer 5 silk-screens on the conductive layer 6 that rolls off the production line, insulation course 4 silk-screen and covering is respectively reached the standard grade on the conductive layer 1 and the conductive layer 5 that rolls off the production line, upper and lower line conductive layer is fitted through mucigel, by transparent isolating points two conductive layers is separated again.When touching, the contact of two conductive layers produces electric signal.The electric signal utilization elargol layer of reaching the standard grade is connected on the FPC pin with the elargol layer that rolls off the production line.See also Fig. 2, Fig. 3, be the upper and lower line elargol of prior art touch-screen line synoptic diagram, have around the conductive layer 14 of this touch-screen elargol line 13 around, form the ring-like of a sealing.As shown in Figure 2, two bullion tree laces form two gaps, be respectively reach the standard grade the elargol line gap 11 and the gap, FPC pad place 12 of reaching the standard grade, the groove in these two places is straight lines, two bullion tree laces separately, when combination pressing touch-screen, because having bending, the direction of gas flow do not stop that the gas at this two place externally has certain gas leakage when pressing, make the face out-of-flatness easily, the surface is recessed, produces Newton ring.Simultaneously have difference in height herein, profile pattern also is affected, and indenture can occur.When cutting, straight trough advances cigarette easily when conducting film cuts herein, causes the adverse consequencess such as interior dirt of touch-screen after the touch screen combination.As shown in Figure 3, the groove at roll off the production line the

elargol line gap

21 and 22 places, gap, FPC pad place of rolling off the production line is a skewed slot, and the cigarette that produces when this design can prevent cutting when cutting is introduced in the touch-screen.But this design is still perfect inadequately to the impermeability aspect, and the slit at roll off the production line during combination the

elargol line gap

21 and 22 places, gap, FPC pad place of rolling off the production line is big, and the gas in the screen is squeezed out easily, causes the depression of touch-screen, produces Newton ring, influences outward appearance.Out-of-flatness also appears in this place, two places easily when pressing, cause the bad order of touch-screen.

The utility model content

The utility model easily produces the technical matters that the Newton ring phenomenon reduces display effect and bad order for solving existing touch-screen, and a kind of resistive touch screen structure is provided.

The utility model provides a kind of resistive touch screen, comprise the conductive layer of reaching the standard grade, the elargol layer of reaching the standard grade, insulation course, mucigel, FPC, the elargol layer and the conductive layer that rolls off the production line roll off the production line, the described elargol layer of reaching the standard grade is located on the conductive layer of reaching the standard grade, the elargol layer that rolls off the production line is located on the inserting and conducting layer, described insulation course covers reach the standard grade the elargol layer and the elargol layer that rolls off the production line respectively, on described, the conductive layer that rolls off the production line is fitted through mucigel, the described conductive layer of reaching the standard grade, roll off the production line conductive layer respectively by the elargol layer of reaching the standard grade, the elargol layer that rolls off the production line is connected to FPC, wherein, on described, the elargol layer that rolls off the production line is made up of two bullion tree laces respectively, two bullion tree lace gap shape bendings of described reach the standard grade the elargol layer and the elargol layer that rolls off the production line are " Z " shape.

Further, the described elargol layer of reaching the standard grade is less than or equal to 0.5mm with the elargol lamellar spacing line-spacing that rolls off the production line.

Further, the elargol live width of described reach the standard grade the elargol layer and the elargol layer that rolls off the production line is more than or equal to 0.8mm.

Further, the described elargol layer of reaching the standard grade is connected to FPC by first lead-in wire, second lead-in wire respectively, and described first lead-in wire is parallel with second lead-in wire; The described elargol layer that rolls off the production line is connected to FPC by the 3rd lead-in wire, the 4th lead-in wire respectively, and described the 3rd lead-in wire is parallel with the 4th lead-in wire.

Further, the line-spacing between first lead-in wire and second lead-in wire equates that with line-spacing between the 3rd lead-in wire and the 4th goes between described line-spacing all is less than or equal to 0.5mm.

The utility model is by the bending design of reach the standard grade the elargol layer and place, the elargol lamellar spacing shape that rolls off the production line, and reach the standard grade the elargol layer and the parallel design of elargol layer of rolling off the production line with PFC junction lead-in wire, existing resistive touch screen surfaces common uneven, phenomenon such as screen gas leakage etc. have been solved, can guarantee the impermeability and the surface smoothness of touch-screen well, thereby effectively reduce the common bad problems such as Newton ring of resistive touch screen, have very high use value.

Description of drawings

Fig. 1 is a prior art touch-screen layering synoptic diagram.

Fig. 2 is the touch-screen of the prior art elargol layer synoptic diagram of reaching the standard grade.

Fig. 3 is the touch-screen of the prior art elargol layer synoptic diagram that roll off the production line.

The elargol layer synoptic diagram of reaching the standard grade of Fig. 4 the utility model embodiment.

The elargol layer synoptic diagram that roll off the production line of Fig. 5 the utility model embodiment.

Embodiment

Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

With reference to figure 4 and Fig. 5, be respectively the synoptic diagram of the upper and lower line elargol of the touch-screen layer of the utility model embodiment.The utility model embodiment touch-screen comprises the conductive layer of reaching the standard grade, the elargol layer 31 of reaching the standard grade, insulation course, mucigel, flexible printed circuit board (FPC), the elargol layer 41 and the conductive layer etc. that rolls off the production line roll off the production line.Figure 4 shows that elargol layer 31 synoptic diagram of reaching the standard grade, it is the Y-axis direction of routing; Figure 5 shows that elargol layer 41 synoptic diagram that roll off the production line, it is the X-axis direction of routing.Wherein, upper and lower line elargol layer outward flange is 0.65mm to the touch-screen Edge Distance, and upper and lower line elargol layer inward flange is 0.9mm apart from the viewfinder area minor increment, and the elargol line width minimum of upper and lower line elargol layer is 0.8mm.

As shown in Figure 4, the elargol layer 31 of reaching the standard grade is around distributing around the conductive layer of reaching the standard grade, and nonfunctional area is also filled the elargol line, to reach the effect of surfacing.The elargol layer 31 of reaching the standard grade of Y direction cabling, elargol line following on it is effective connecting line, and the gap 32 of the elargol layer 31 of reaching the standard grade is on the limit, the left and right sides of the conductive layer of reaching the standard grade, and 32 shapes bending in gap is " Z " font, and the gap location line-spacing is for being less than or equal to 0.5mm; FPC pad place 33 elargol layer 31 cabling of reaching the standard grade are designed to: the elargol layer 31 of reaching the standard grade is connected to FPC by first lead-in wire, 34, second lead-in wire 35 respectively, first lead-in wire 34 is parallel with second lead-in wire 35, first lead-in wire 34 connects the lower end of the conductive layer of reaching the standard grade, second lead-in wire 35 is walked around the lower end of the conductive layer of reaching the standard grade, be connected to the upper end of the conductive layer of reaching the standard grade, two bullion tree laces are apart from being 0.5mm to the maximum, and the elargol line is also filled at the vacancy position at FPC pad place 33.This kind design can reach good air-tightness and the good planarization of FPC place elargol line, can prevent, reduce the generation of Newton ring.

As shown in Figure 5, the elargol layer 41 that rolls off the production line is around distributing around the conductive layer that rolls off the production line, and nonfunctional area is also filled the elargol line, to reach the effect of surfacing.The elargol layer 41 that rolls off the production line of X-direction cabling, the elargol line on its limit, left and right sides is effective connecting line, and elargol layer 41 gap 42 of rolling off the production line are in the upper end of the conductive layer that rolls off the production line, and 42 shapes bending in gap is " Z " font, and the gap location line-spacing is for being less than or equal to 0.5mm; FPC pad place 43 elargol layer 41 cabling that roll off the production line are designed to: the elargol layer 41 that rolls off the production line is connected to FPC by the 3rd lead-in wire the 44, the 4th lead-in wire 45 respectively, the 3rd lead-in wire 44 is parallel with the 4th lead-in wire 45, the 3rd lead-in wire 44 connects the left end of the conductive layer that rolls off the production line, the 4th lead-in wire 45 is walked around the lower end of the conductive layer that rolls off the production line, be connected to the right-hand member of the conductive layer that rolls off the production line, two bullion tree laces are apart from being 0.5mm to the maximum, and the elargol line is also filled at the vacancy position at FPC pad place 33.Can guarantee the impermeability and the surface smoothness of touch-screen well by this design, the scale of construction of can stopping well after the touch screen combination to hold one's breath is subjected to the influence of environmental change.

Elargol line width, the fracture line-spacing of the elargol layer and the elargol layer that rolls off the production line are all identical owing to reach the standard grade, outer rim can overlap with rim during applying, the conductive layer of reaching the standard grade after mucigel is fitted is tightr with the conductive layer that rolls off the production line, gas in the screen is not easy to leak when pressing, the conductive layer of reaching the standard grade is not easy the distortion depression of bending, and can prevent the generation of Newton ring effectively and causes the problems such as bad order of touch-screen.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. resistive touch screen, comprise the conductive layer of reaching the standard grade, the elargol layer of reaching the standard grade, insulation course, mucigel, FPC, the elargol layer and the conductive layer that rolls off the production line roll off the production line, the described elargol layer of reaching the standard grade is located on the conductive layer of reaching the standard grade, the elargol layer that rolls off the production line is located on the inserting and conducting layer, described insulation course covers reach the standard grade the elargol layer and the elargol layer that rolls off the production line respectively, on described, the conductive layer that rolls off the production line is fitted through mucigel, the described conductive layer of reaching the standard grade, roll off the production line conductive layer respectively by the elargol layer of reaching the standard grade, the elargol layer that rolls off the production line is connected to FPC, it is characterized in that, on described, the elargol layer that rolls off the production line is made up of two bullion tree laces respectively, two bullion tree lace gap shape bendings of described reach the standard grade the elargol layer and the elargol layer that rolls off the production line are " Z " shape.

2. a kind of resistive touch screen as claimed in claim 1 is characterized in that, the described elargol layer of reaching the standard grade is less than or equal to 0.5mm with the elargol lamellar spacing line-spacing that rolls off the production line.

3. a kind of resistive touch screen as claimed in claim 1 is characterized in that, the elargol live width of described reach the standard grade the elargol layer and the elargol layer that rolls off the production line is more than or equal to 0.8mm.

4. a kind of resistive touch screen as claimed in claim 1 is characterized in that, the described elargol layer of reaching the standard grade is connected to FPC by first lead-in wire, second lead-in wire respectively, and described first lead-in wire is parallel with second lead-in wire; The described elargol layer that rolls off the production line is connected to FPC by the 3rd lead-in wire, the 4th lead-in wire respectively, and described the 3rd lead-in wire is parallel with the 4th lead-in wire.

5. a kind of resistive touch screen as claimed in claim 4 is characterized in that, the line-spacing between first lead-in wire and second lead-in wire equates that with line-spacing between the 3rd lead-in wire and the 4th goes between described line-spacing all is less than or equal to 0.5mm.