CN203422734U

CN203422734U - Capacitive touch screen

Info

Publication number: CN203422734U
Application number: CN201320551143.2U
Authority: CN
Inventors: 洪嘉乐
Original assignee: BERN OPTISK (SHENZHEN) CO Ltd
Current assignee: Biel Crystal Manufactory Huizhou Ltd
Priority date: 2013-09-05
Filing date: 2013-09-05
Publication date: 2014-02-05
Anticipated expiration: 2023-09-05

Abstract

The utility model provides a capacitive touch screen, which belongs to the technical field of touch screens, and comprises a base material, a plurality of first electrodes and a plurality of second electrodes, the first electrodes are arranged on the base material in the vertical direction, the second electrodes are arranged on the base material in the transverse direction, the first electrodes and the second electrodes are crossed with each other to form a touch sensitive matrix, single first electrodes are formed integrally, each second electrode is divided into a plurality of electrode segments by the first electrodes, two adjacent electrode segments are electrically connected by sprayed bridging lines in a bridging mode, insulation layers are further sprayed below the bridging lines, and the bridging lines and the first electrodes are insulated through the insulation layers. The capacitive touch screen solves the problem that an existing touch screen is complex in structure and making process. The capacitive touch screen is simple in structure, uses nano-gold, nano-silver or nano-copper conductive printing ink as wires, is excellent in conductive performance, and resists moisture and corrosion. Furthermore, the capacitive touch screen is simple in making process, high in efficiency and low in cost, protects environment, and saves energy.

Description

A kind of capacitance touch screen

Technical field

The utility model relates to touch screen technology field, is specifically related to a kind of capacitance touch screen.

Background technology

Capacitance touch screen obtains a wide range of applications in many electronic products, such as mobile phone, PDA, multimedia, public information inquiry system etc.Capacitance touch screen comprises surface capacitance type touch screen and projected capacitive touch screen, and projected capacitive touch screen is divided into again self-capacitance formula touch-screen and mutual capacitance type touch screen, and self-capacitance formula touch-screen is widely used because having the feature that performance is good, yield is high.Self-capacitance formula touch-screen is to be made into laterally and longitudinal electrode array with a kind of transparent conductive material tin indium oxide at substrate surface, these laterally with electrode longitudinally respectively with ground formation electric capacity, i.e. self-capacitance.Current, the manufacturing process of self-capacitance formula touch-screen often needs through steps such as etching, upper photoresistance, exposure, development and platings, and complex manufacturing technology, efficiency is low, cost is high, pollution is heavy, and the moisture-proof gas of the plain conductor plating, corrosion resistance are poor.

Utility model content

In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of capacitance touch screen, its wire have conduct electricity very well, moisture-proof gas, corrosion resistant feature, and its manufacture craft is simple.

For addressing the above problem, the technical scheme that the utility model adopts is as follows:

, comprise base material, be arranged on a plurality of the first electrodes longitudinally and a plurality of the second horizontal electrode on base material; A plurality of the first electrodes mutually intersect and form touch sensible matrix with a plurality of the second electrodes: single the first electrode is one-body molded, each second electrode is become a plurality of electrode sections by a plurality of the first electrode separation, between adjacent two electrode sections, be to be electrically connected to by the mode of putting up a bridge by the bridging line spraying, below bridging line, be also coated with insulation course, this insulation course is by bridging line and the first electrode isolation.

Preferably, insulation course is connected between two electrode sections that the second electrode is adjacent in the mode of putting up a bridge.

Preferably, insulation course equates with the width of bridging line.

Preferably, insulation course is than bridge joint live width.

Preferably, the two ends of bridging line are connected with two adjacent electrode sections of the second electrode respectively, and its stage casing covers the centre of insulation course upper surface.

Preferably, bridging line is nm of gold electrically conductive ink, nano-silver conductive ink or Nanometer Copper electrically conductive ink.

Preferably, insulation course is UV dielectric ink or heat curing dielectric ink.

Preferably, bridging line is the thin dumbbell shape in wide centre, two ends.

Preferably, the link of two adjacent electrode sections of the second electrode is for removing cutting-edge structure.

Preferably, two adjacent electrode sections of the second electrode goes to most advanced and sophisticated limit parallel with the limit of the connecting portion of the first electrode.

Compared to existing technology, the beneficial effects of the utility model are:

The utility model is electrically connected to the second electrode by spraying electrically conductive ink, the wire that nm of gold, Nano Silver or Nanometer Copper electrically conductive ink are made conducts electricity very well, structure is intensive and surface-brightening, also has stronger moisture-proof gas and corrosion resistance simultaneously and can make hyperfine circuit; And in this electrically conductive ink, the less sintering heating-up temperature of the particle diameter of metallic particles is just lower, more easily realizes on the base material of non-refractory and printing.In addition, manufacture craft of the present utility model has been simplified the manufacture craft of traditional self-capacitance touch screen, has improved efficiency, has reduced cost and has reduced pollution.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of touch sensible matrix in a kind of capacitance touch screen of the present utility model;

Fig. 2 be in Fig. 1 a-quadrant at the structural representation of embodiment mono-;

Fig. 3 is the structural representation of embodiment bis-;

Fig. 4 is the structural representation of embodiment tri-;

Wherein: 1, the first electrode; 2, the second electrode; 3, insulation course; 4, bridging line.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Embodiment mono-

As depicted in figs. 1 and 2, a kind of capacitance touch screen, comprises base material, is arranged on a plurality of the first electrodes 1 longitudinally and a plurality of the second horizontal electrode 2 on base material; A plurality of the first electrodes 1 mutually intersect and form touch sensible matrix with a plurality of the second electrodes 2.Single the first electrode 1 is one-body molded, each second electrode 2 is separated into a plurality of electrode sections by a plurality of the first electrodes 1, between adjacent two electrode sections, be to be electrically connected to by the mode of putting up a bridge by the bridging line 4 spraying, below bridging line 4, be also coated with insulation course 3, this insulation course 3 is by bridging line 4 and the first electrode 1 isolation.The first electrode 1 and the general nesa coatings such as tin indium oxide that adopt of the second electrode 2 are made.

Insulation course 3 equates with the width of bridging line 4, and as a kind of preferred embodiment, insulation course 3 is wider than bridging line 4, and the two ends of bridging line 4 are connected with two adjacent electrode sections of the second electrode 2 respectively, and its stage casing covers the centre of insulation course 3 upper surfaces.

Bridging line 4 is nm of gold electrically conductive ink, nano-silver conductive ink or Nanometer Copper electrically conductive ink.As preferred embodiment, the utility model selects nano-silver conductive ink as bridging line 4, its have conduct electricity very well, surface-brightening and moisture-proof gas, corrosion resistant advantage.

Insulation course 3 is dielectric ink, is preferably UV dielectric ink or heat curing dielectric ink.

The link of two adjacent electrode sections of the second electrode 2, for removing cutting-edge structure, is assembled current collection lotus because of tip, and this structure prevents point discharge or electric leakage.Two adjacent electrode sections of the second electrode 2 of embodiment of the present utility model go to most advanced and sophisticated limit parallel with the limit of the first electrode connecting portion.

Embodiment bis-

The difference of the present embodiment and embodiment mono-is only, as shown in Figure 3, insulation course 3 is connected between two electrode sections that the second electrode 2 is adjacent in the mode of putting up a bridge.

Embodiment tri-

The difference of the present embodiment and embodiment mono-is only, as shown in Figure 4, bridging line 4 is the thin dumbbell shape in wide centre, two ends.

Bridging line 4 be the mode by spraying, sintering fixing to the electrically conductive ink on the second electrode 2 and insulation course 3, adopt and fix in this way wire, can be so that the structure between wire and electrode be tightr.

Manufacture craft of the present utility model is as follows:

After the touch screen base material that completes tin indium oxide circuit and insulation course layout is cleaned up, on its surface, carry out Butut, and do surface treatment, then by the cabling of institute's cloth figure, electrically conductive ink is sprayed on base material, through low-temperature sintering curing molding, form the metal line of touch-screen.

This technique is brief, manufacture is quick, can print out at short notice conducting wire sinter molding, and wire and figure can directly print, without mask, can form the functional assemblies such as high-precision conducting wire, conductive pattern, thereby greatly improve production efficiency.

Above-mentioned embodiment is only preferred implementation of the present utility model; can not limit with this scope of the utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.

Claims

1. a capacitance touch screen, comprises base material, is arranged on a plurality of the first electrodes longitudinally (1) and a plurality of horizontal the second electrode (2) on base material; A plurality of the first electrodes (1) mutually intersect and form touch sensible matrix with a plurality of the second electrodes (2), it is characterized in that: single the first electrode (1) is one-body molded, each second electrode (2) is separated into a plurality of electrode sections by a plurality of the first electrodes (1), between adjacent two electrode sections, be to be electrically connected to by the mode of putting up a bridge by the bridging line spraying (4), in the below of bridging line (4), be also coated with insulation course (3), this insulation course (3) is by bridging line (4) and the first electrode (1) isolation.

2. a kind of capacitance touch screen as claimed in claim 1, is characterized in that: described insulation course (3) is connected between two adjacent electrode sections of the second electrode (2) in the mode of putting up a bridge.

3. a kind of capacitance touch screen as claimed in claim 1, is characterized in that: described insulation course (3) equates with the width of bridging line (4).

4. a kind of capacitance touch screen as claimed in claim 1, is characterized in that: described insulation course (3) is wider than bridging line (4).

5. a kind of capacitance touch screen as claimed in claim 4, is characterized in that: the two ends of described bridging line (4) are connected with two adjacent electrode sections of the second electrode (2) respectively, and its stage casing covers the centre of insulation course (3) upper surface.

6. a kind of capacitance touch screen as claimed in claim 1, is characterized in that: described bridging line (4) is nm of gold electrically conductive ink, nano-silver conductive ink or Nanometer Copper electrically conductive ink.

7. a kind of capacitance touch screen as claimed in claim 1, is characterized in that: described insulation course (3) is UV dielectric ink or heat curing dielectric ink.

8. a kind of capacitance touch screen as claimed in claim 1, is characterized in that: described bridging line (4) is the thin dumbbell shape in wide centre, two ends.

9. a kind of capacitance touch screen as claimed in claim 1, is characterized in that: the link of two adjacent electrode sections of described the second electrode (2) is for removing cutting-edge structure.

10. a kind of capacitance touch screen as claimed in claim 9, is characterized in that: two adjacent electrode sections of described the second electrode (2) go to most advanced and sophisticated limit parallel with the limit of the connecting portion of the first electrode (1).