CN201047941Y

CN201047941Y - Glass-to-glass resistor type touch panel

Info

Publication number: CN201047941Y
Application number: CNU2007200344813U
Authority: CN
Inventors: 房大勇
Original assignee: 房大勇
Current assignee: Nanjing Wally Electronics Technology Co., Ltd.
Priority date: 2007-02-13
Filing date: 2007-02-13
Publication date: 2008-04-16
Anticipated expiration: 2017-02-13

Abstract

The utility model discloses a double-glass-layer resistance type touch screen, which comprises two layers of conductive glasses, namely one upper layer and one lower layer. Insulating points are printed between the upper and the lower layers of the conductive glasses to separate the two and keep the two to be insulated; to reduce the problem of surface light reflection to the minimum, a layer of polarizer films are pasted on the surface of the upper layer of the conductive glass. The utility model adopts the conductive glass to replace conductive film and therefore, in the premise of satisfying application requirements, improves the thermal stability of the whole touch screen so that the touch screen can be directly attached to the surface of a display working under environments with different temperatures, thereby not only widening the application scope of the touch screen, but also improving the reliability and the safety of the touch screen under conditions with harsh environment temperature.

Description

Glass is to glass resistor formula touch-screen

One, technical field

The utility model relates to the touch-screen in a kind of display control device field that can use under hot environment, a kind of specifically glass is to the resistive touch screen of glass.

Two, background technology

Along with growing with each passing day and the update of man-machine inputting equipment of multimedia information inquiry business, touch-screen is just accepted by increasing people as a kind of input equipment simple to operate, easy to use, it has given the most natural a kind of man-machine interaction mode in the message exchange field, is attractive brand-new multimedia interactive equipment.

Touch-screen is formed by touching detection part and touch screen controller two parts; Touch detection part and be installed in the indicator screen front, the user is by touching input signal, this signal enters touch screen controller immediately, the main effect of touch screen controller is to receive touch information from touch point detection device, and convert it to contact coordinate, give CPU again, its can receive simultaneously the order that CPU sends and be carried out.

Different according to the principle of work of touch-screen and transmission medium, touch-screen is divided into four types, is respectively resistance-type, capacitor induction type, infrared-type and surface acoustic wave type, and wherein resistive touch screen is most widely used.The screen body of existing resistive touch screen is divided into double-layer structure, wherein the many employings of basic unit is glass material, its surface scribbles the conductive layer of layer of transparent, constitute electro-conductive glass (ITO GLASS), adopted more on the upper strata is soft conductive film (ITO FILM), in the electro-conductive glass side relative with conductive film, both separate insulation from naming a person for a particular job to be printed with the septum pellucidum of many tiny (diameter is less than 50 microns).Because the conductive film that adopt on the upper strata of general resistive touch screen is a kind of thermoplastic resin, its heat resistanceheat resistant poor-performing, the thermal expansivity of its thermal expansivity and glass is also inequality, and therefore performance degradation just appears in touch-screen easily that make with conductive film and electro-conductive glass under hot environment.Such as, the GPS navigation system of on automobile, installing, if used the touch-screen of film to glass, when entering summer, when automobile is parked outside, run into shining of the sun and shine, vehicle interior temperature can rise to more than 60 ℃, at this moment the film of touch screen surface will relax, and will produce wrong signal during touch, navigational system even can mislead to the driver.Particularly in military use, when navigation or control system when being installed on the military equipments such as tank, aircraft, naval vessels, under the bigger environment of temperature variation, keep the stability of its touching signals transmission system just even more important, therefore there is above-mentioned tangible deficiency in existing film to the resistive touch screen of glass.

Three, summary of the invention

1, goal of the invention: the purpose of this utility model provides a kind of big in difference variation, touch-screen that still can steady operation under the operating ambient temperature condition with higher.

2, technical scheme: a kind of glass described in the utility model is to glass resistor formula touch-screen, it is characterized in that: it comprises two-layer electro-conductive glass, wherein one deck is the upper strata electro-conductive glass, another layer is the bottom electro-conductive glass, in the side of bottom electro-conductive glass, be printed on the isolating points that both is separated and keep insulation with respect to the upper strata electro-conductive glass.

The upper strata electro-conductive glass has adopted thickness only at 150-200 μ m reinforced conductive glass as thin as a wafer, has stronger toughness.

Adjusted the printing geometric parameter of isolating points in process, it highly has only film to about half of touch-type glass screen isolating points, between 5-10 μ m; The diameter of isolating points is at 10-30 μ m, than film to more than the little 20 μ m of touch-type glass screen isolating points diameter.

Glass is to touch-type glass screen up and down during two-layer applying, and is different to the double sticky tape that touch-type glass screen adopted with film, adopted special seal gum.

After upper strata glass and lower floor's glass gluing are finished, stick special-purpose polaroid again, both carried out non-glare treated, reduce the interference problem of surface light reflection to greatest extent, what produce in the time of can preventing the tempered glass fragmentation again splashes.

Because glass has pliability unlike film, also different to the reflection of light effect, and upper strata glass is the workplace of signal input, how to select upper strata glass and change the key link that processing technology etc. has just become the technical program.The upper strata glass that this programme is selected is a kind of through strengthening, and as thin as a wafer, electro-conductive glass (ITO GLASS) that toughness is very strong again, isolating points is printed parameter and also done suitable adjustment.Overcome the difficult problem of signal input that causes because upper strata glass is really up to the mark.Simultaneously, different with film to the touch-screen of glass, when this glass is being used on the LCD (LCD) to the touch-screen of glass, because glass is to the reflection of light effect, can influence the picture quality of LCD, so also need stick the special-purpose polaroid of one deck on its surface, to guarantee the image display function of LCD.

During work, when the upper strata of touch screen electro-conductive glass is pointed or during the pressure of input pen, at the upper strata of position, touch point glass, just produce the bending of trace, just had with bottom glass and to have contacted, resistance changes, and produces signal on X-axis and Y-axis both direction, delivers to touch screen controller then.Controller detects this contact and calculates the position of X-axis, Y-axis, and the mode according to analog mouse operates again.Because the upper strata and the bottom of touch-screen have all adopted electro-conductive glass, under or the environment that difference variation is bigger higher in temperature, the levels of touch-screen can not produce distortion or dislocation, has guaranteed the stability of touch control device.

3, beneficial effect: the relative prior art of the utility model has the following advantages: layer of conductive film of the prior art adds one deck electro-conductive glass because touch-screen has adopted two-layer electro-conductive glass, it is different with two kinds of different materials expansion coefficient thoroughly to have solved conductive film material heat resistanceheat resistant poor performance, cause touch-screen under rugged surrounding temperature, the problem of performance degradation.It is satisfying under the prerequisite of request for utilization, and the stability that makes whole touch screen work under the different temperatures environment is improved greatly, can satisfy such as the requirement to the high-performance touch control device of vehicle-mounted, airborne, high temperature industry, military field.

Four, description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the front view of Fig. 1.

Among the figure: 1, upper strata electro-conductive glass, 2, lower floor's electro-conductive glass, 3, isolating points, 4, lead-in wire,

5, polaroid, 6, the transparency conducting layer that has on the upper and lower layer electro-conductive glass, 7, fluid sealant.

Five, embodiment

Below in conjunction with accompanying drawing the utility model is specifically described:

As depicted in figs. 1 and 2, a kind of glass described in the utility model is to glass resistor formula touch-screen, it comprises two-layer electro-conductive glass, wherein one deck is a upper strata electro-conductive glass 1, another layer is a bottom electro-conductive glass 2, electro-conductive glass 1,2 one side in opposite directions itself all have transparency conducting layer 6, between upper strata electro-conductive glass 1 and bottom electro-conductive glass 2, be printed on the isolating points 3 that both is separated and keep insulation, between two-layer conductive film, be pressed into lead-in wire 4, when this glass is used to LCD supporting to touch-type glass screen, in order to prevent catoptrical interference, also need to add in the above the special-purpose polaroid 5 of one deck.

Main points of the present utility model are: at first selecting to substitute the material of conductive film as upper strata electro-conductive glass 1, secondly is the printing parameter of readjusting isolating points 3, is exactly the polaroid 5 that will paste one deck antireflection to this product in addition.

Its processing step mainly is:

Make upper strata electro-conductive glass 1 according to the manufacturing process of setting.

Make bottom electro-conductive glass 2 according to the manufacturing process of setting, and stamp isolating points 3.

Two-layer electro-conductive glass is bonding with fluid sealant (Seal) 7, compress lead-in wire 4.

On the electro-conductive glass of upper strata, paste the polaroid 5 of one deck antireflection again.

At last product is carried out outward appearance and electric performance test.

The utility model is because the material that does not use this resistive touch screen tradition of conductive film to adopt, the substitute is the high conducting glass material of deformation temperature, it is poor that this has just fundamentally solved present touch-screen high temperature resistant property, the problem of incompatibility temperature rugged surroundings, thereby expanded its use field, not only can handwriting input, and can substitute the PC button that present touch-control instrument, equipment generally use, for more space of thinking has been created in the use field and the design of touch-control instrument, equipment, created condition under varying environment, realizing man-machine conversation.

Claims

1. a glass is to the resistive touch screen of glass, it is characterized in that: it comprises two-layer electro-conductive glass, wherein one deck is upper strata electro-conductive glass (1), another layer is bottom electro-conductive glass (2), is printed on the isolating points (3) that both is separated and keep insulation on bottom electro-conductive glass (2) side relative with upper strata electro-conductive glass (1).

2. glass according to claim 1 is characterized in that glass resistor formula touch-screen: upper strata electro-conductive glass (1) adopts have the reinforced conductive glass than obdurability of thickness at 150-200 μ m.

3. glass according to claim 1 and 2 is characterized in that glass resistor formula touch-screen: the height of isolating points is at 5-10 μ m; The diameter of isolating points is at 10-30 μ m.

4. glass according to claim 1 and 2 is characterized in that glass resistor formula touch-screen: adopt fluid sealant (7) to fit between upper strata electro-conductive glass (1) and the bottom electro-conductive glass (2).

5. glass according to claim 1 and 2 is characterized in that glass resistor formula touch-screen: post polaroid on upper strata electro-conductive glass (1).