CN102707647A

CN102707647A - Circuit for sputtering conductive material at fixed point of capacitive touch panel carrier glass

Info

Publication number: CN102707647A
Application number: CN2012101279003A
Authority: CN
Inventors: 矣红; 钟刚
Original assignee: JIANGSU ZHAOYANG PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: JIANGSU ZHAOYANG PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2012-04-27
Filing date: 2012-04-27
Publication date: 2012-10-03

Abstract

The invention provides a circuit used for sputtering a conductive material at fixed point of a capacitive touch panel carrier glass. The circuit comprises an on-off control circuit and a switch circuit, wherein the on-off control circuit includes a singlechip, a gate circuit chip, and a crystal oscillating circuit; the switch circuit includes a MOS (metal oxide semiconductor) transistor Q1, and a light emitting diode (LED) Q2; the negative pole of the LED Q2 is connected with the source S of the MOS transistor Q1; the positive pole of the LED Q2 is connected with a power supply VDD; the output signal of the singlechip is transmitted to the gate circuit chip; the output signal of the gate circuit chip is transmitted to the gate G of the MOS transistor Q1; the drain D of the MOS transistor Q1 is grounded; the crystal oscillating circuit is connected with the singlechip; and the source S of the MOS transistor Q1 is connected with an electrode output end OUT. The circuit provided by the invention can realize quick movement and accurate location of the output electrode end of an electrode by controlling on-off of the MOS transistor without mechanically moving the electrode, thereby improving the efficiency of sputtering operation.

Description

The circuit that is used for capacitance type touch-control panel carrier glass fixed point sputter conductive material

Technical field

The present invention relates to a kind of control circuit field of the sputter conductive material of fixing a point, particularly a kind of circuit that is used for condenser type control panel carrier glass fixed point sputter conductive material.

Background technology

Along with high-speed development of science and technology, snafu variation has taken place in electronic product, along with the appearance of recent touch electronic product; The increasing people of receiving of touch-control product pursue; Not only it can save the space, be convenient for carrying, but and the user through finger or pointer etc. direct control just; Use comfortable, very convenient.For example, the common personal digital assistant (PDA) of existing market, touch-control class mobile phone, portable notebook computer or the like have all strengthened the input to touch technology, use so touch-control device must have more widely in every field in the future.

The structure of capacitance type touch-control panel is to constitute by containing carrier substrate, cover-plate glass and the FPC soft arranging wire that conductive material is tin indium oxide (ITO).Wherein the carrier substrate of conductive material is that carrier glass is tin indium oxide (ITO) base material again, and its manufacturing process is very complicated, and the cost proportion that occupies capacitance plate is higher.

At present, sputtering process method commonly used is to adopt the bombardment target, and target is made up of conductive material; Make the conductive material of atom size such as tiny flakes drop on carrier glass, the technology title is commonly referred to as magnetic control sputtering plating sputtering method; Belong to the high-speed low temperature sputtering method; This technological requirement vacuum tightness is about 1 * 10-3Torr, and promptly the vacuum state of 1.3 * 10-3Pa charges into inert gas argon gas (Ar), and between carrier glass (anode) and metal targets (negative electrode), adds high-voltage dc voltage; Because the electron excitation inert gas that glow discharge (glow discharge) produces; Produce plasma, plasma is driven the conductive material of the atom size of metal targets out of, is deposited on carrier glass.Use the Mask illumination web plate of appointment to cover on tin indium oxide (ITO) base material then; Use the chemical liquid etching; Perhaps the mode of laser-induced thermal etching is carried out the circuit etching to the conductive material of carrier glass, and this kind mode all has strict requirement for the air purity of equipment, operating personnel, operating environment.Its advantage is to produce in enormous quantities quick, and shortcoming is small serial production, and is with high costs, for the short run of current trend appearance screen customized, the problem that existence can't reduce cost.

In order to overcome above-mentioned shortcoming and problem, though industry has also proposed some solutions targetedly at present, such as mode through the soft membrane material printing conductive material of use; But the material speciality of soft membrane material makes its high temperature reliability; Transmittance all can significantly decrease, and the life-span can be short more a lot of than carrier glass, though short run has superiority; But transfer to when producing in enormous quantities, how many costs do not reduce.Perhaps also have at the back side of carrier glass and increase a removable electrode; The method that moves travelling electrode through driven by motor realizes the fixed point sputter; There are mechanical traveling electrode parts in the method, when traveling electrode, should not accurately locate, and after long-time the use mechanical position deviation can take place; And the translational speed of driven by motor electrode is rapid inadequately and quick, the sputter inefficiency.Therefore the above-mentioned two kinds of method and apparatus that adopt all can not get client's approval.

Therefore press for and provide a kind of easier, technology solves above problem cheaply.

Summary of the invention

The purpose of this invention is to provide a kind of circuit, solve when carrier glass is fixed a point sputter because of mechanical electrode move for a long time use be prone to take place mechanical positioning inaccurate with electrode translational speed problem rapidly not.

To achieve these goals; The present invention provides a kind of circuit that is used for capacitance type touch-control panel carrier glass fixed point sputter conductive material, comprises ON-OFF control circuit and on-off circuit, and said ON-OFF control circuit comprises single-chip microcomputer, gate circuit chip and crystal oscillating circuit; Said on-off circuit comprises metal-oxide-semiconductor Q1 and light emitting diode Q2; The negative pole of light emitting diode Q2 is connected with the source S of metal-oxide-semiconductor Q1, and the positive pole of light emitting diode Q2 is connected with power vd D, and the output signal of single-chip microcomputer is delivered to the gate circuit chip; The output signal of gate circuit chip is delivered to the grid G of metal-oxide-semiconductor Q1; The drain D ground connection of metal-oxide-semiconductor Q1, crystal oscillating circuit is connected with single-chip microcomputer, and the source S of metal-oxide-semiconductor Q1 is connected with electrode output OUT.

Crystal oscillating circuit comprises capacitor C 1, C2 and inductance L, and an end of capacitor C 1 and capacitor C 2 is connected an end and the single-chip microcomputer input end of clock of inductance L respectively, the other end common ground of capacitor C 1 and capacitor C 2.

Single-chip microcomputer, gate circuit chip and on-off circuit are provided with one or at least more than one.

Principle of work of the present invention is the combination through ON-OFF control circuit and on-off circuit; Size and need of work according to the carrier glass of treating sputter; One or more single-chip microcomputer, on-off circuit and gate circuit chip are set respectively; Break-make through metal-oxide-semiconductor produces electrode potential at the electrode output OUT of on-off circuit, when a plurality of on-off circuit, with the on-off circuit arranged on printed-wiring board (PWB); The size coupling of the size of printed-wiring board (PWB) and carrier glass; Through controlling the single or a plurality of on-off circuits on the different coordinate points, make the electrode output OUT polarization current potential of metal-oxide-semiconductor, be implemented in the pinpoint sputter that carrier glass needs the position rapidly.

The invention has the beneficial effects as follows and cancelled mechanical traveling electrode, the break-make that makes electrode pass through metal-oxide-semiconductor realizes, the output electrode end of the metal-oxide-semiconductor at the back side can move rapidly, accurately locate and improves the sputter work efficiency when realizing carrier glass fixed point sputter.

Description of drawings

Fig. 1 is the schematic block circuit diagram of the embodiment of the invention.

Fig. 2 is the ON-OFF control circuit schematic diagram of the embodiment of the invention.

Fig. 3 is the single switch circuit theory diagrams of the embodiment of the invention.

Embodiment

Specify the preferred embodiments of the present invention below in conjunction with accompanying drawing.

Embodiment such as Fig. 1, Fig. 2 and shown in Figure 3; Present embodiment provides a kind of circuit that is used for capacitance type touch-control panel carrier glass fixed point sputter conductive material, comprises ON-OFF control circuit and 32 on-off circuits, and said ON-OFF control circuit comprises AT89C51 single-chip microcomputer, 4 74serial gate circuit chips and crystal oscillating circuit; Said single switch circuit comprises metal-oxide-semiconductor Q1 and light emitting diode Q2; The negative pole of light emitting diode Q2 is connected with the source S of metal-oxide-semiconductor Q1, and the positive pole of light emitting diode Q2 is connected with power vd D, and the output signal of single-chip microcomputer is delivered to the gate circuit chip; The output signal of gate circuit chip is delivered to the grid G of metal-oxide-semiconductor Q1; The drain D ground connection of metal-oxide-semiconductor Q1, crystal oscillating circuit is connected with single-chip microcomputer, and the source S of metal-oxide-semiconductor Q1 is connected with electrode output OUT.

Crystal oscillating circuit comprises capacitor C 1, C2 and inductance L, and an end of capacitor C 1 and capacitor C 2 is connected an end and the single-chip microcomputer clock input X1 and the X2 end of inductance L, the other end common ground of capacitor C 1 and capacitor C 2 respectively.

32 single switch circuit are arranged.

Combination through ON-OFF control circuit and on-off circuit; Size and need of work according to the carrier glass of treating sputter; With the on-off circuit arranged on printed-wiring board (PWB); The back side of carrier glass is mated and be arranged on to the size of the size of printed-wiring board (PWB) and carrier glass, and promptly non-sputter face is through the single or a plurality of on-off circuits on the different coordinate points on the control printed-wiring board (PWB); Make the electrode output OUT polarization on the on-off circuit, realize rapidly that relative position moves to make conductive material pinpoint sputter in carrier glass.

The beneficial effect of present embodiment is to have eliminated mechanical part, and the on-off circuit electrode output OUT at the back side can move rapidly, fix a point accurate and the sputter work efficiency significantly improves when realizing carrier glass fixed point sputter.

Claims

1. the circuit that is used for capacitance type touch-control panel carrier glass fixed point sputter conductive material; Comprise ON-OFF control circuit and on-off circuit; It is characterized in that: said ON-OFF control circuit comprises single-chip microcomputer, gate circuit chip and crystal oscillating circuit, and said on-off circuit comprises metal-oxide-semiconductor (Q1) and light emitting diode (Q2), and the source electrode (S) of the negative pole of light emitting diode (Q2) and metal-oxide-semiconductor (Q1) is connected; The positive pole of light emitting diode (Q2) is connected with power supply (VDD); The output signal of single-chip microcomputer is delivered to the gate circuit chip, and the output signal of gate circuit chip is delivered to the grid (G) of metal-oxide-semiconductor (Q1), drain electrode (D) ground connection of metal-oxide-semiconductor (Q1); Crystal oscillating circuit is connected with single-chip microcomputer, and the source electrode (S) of metal-oxide-semiconductor (Q1) is connected with electrode output (OUT).

2. the circuit that is used for capacitance type touch-control panel carrier glass fixed point sputter conductive material according to claim 1; It is characterized in that: crystal oscillating circuit comprises electric capacity (C1, C2) and inductance (L); One end of electric capacity (C1) and electric capacity (C2) is connected an end and the single-chip microcomputer input end of clock of inductance (L) respectively, the other end common ground of electric capacity (C1) and electric capacity (C2).

3. the circuit that is used for capacitance type touch-control panel carrier glass fixed point sputter conductive material according to claim 1 and 2 is characterized in that: single-chip microcomputer, gate circuit chip and on-off circuit are provided with one or at least more than one.