CN203950290U

CN203950290U - A kind of OGS capacitive touch screen

Info

Publication number: CN203950290U
Application number: CN201420318816.4U
Authority: CN
Inventors: 潘兴修; 陶春霞; 刘晶晶
Original assignee: NANJING DIANMIAN PHOTOELECTRICITY CO Ltd
Current assignee: NANJING DOTS INTELLIGENT TECHNOLOGY CO., LTD.
Priority date: 2014-06-16
Filing date: 2014-06-16
Publication date: 2014-11-19
Anticipated expiration: 2024-06-16

Abstract

The utility model discloses a kind of OGS capacitive touch screen, comprise glass substrate and flexible circuit board, described glass substrate is provided with tin indium oxide conductive film, described tin indium oxide conductive film is divided into visible area, edge electrodes position and frame position, described edge electrodes position is between described visible area and frame position, described frame position is with insulation course, described edge electrodes position is provided with conductive hole, peripheral silver slurry lead-in wire one end is overlapped on described conductive hole, and the peripheral silver slurry lead-in wire other end is connected with described flexible circuit board.OGS capacitive touch screen of the present utility model has high visibility, can be good at meeting the appearance requirement of OGS capacitive touch screen, and its touch-control is quick on the draw, and service quality is high, finally can also avoid problem in existing OGS capacitive touch screen, the problem includes: form edge ITO fracture and light leak problem.

Description

A kind of OGS capacitive touch screen

Technical field

The utility model relates to a kind of OGS capacitive touch screen.

Background technology

OGS refers to a kind of technology that directly forms ITO conducting film and sensor on cover glass.A glass plays the double action of cover glass and touch tactility apparatus simultaneously.From technological layer, OGS technology possesses following advantage than the G/G touch technology of main flow: simple in structure, gently, thin, light transmission good, owing to saving one deck glass substrate and bonding process, reduced production cost and improved product percent of pass, be after the inevitable choice of capacitive touch screen High Tier Brand.

The key problem in technology point of preparation OGS capacitive touch screen is the presentation quality that how can guarantee capacitive touch screen, can guarantee its service quality again.At present, the common method of preparation OGS capacitive touch screen is: first choose after the cutting that glass baseplate carries out CNC, grind, perforate and strengthening; Silk-screen background color high-temperature insulation ink, then glass one side at ink for screen printing plates layer of transparent electrically conductive ink; By etching demoulding, make the sensor of capacitive touch screen; The peripheral leads printing electrode, binds, thereby completes the capacitive touch screen making of OGS scheme.

Adopt the weak point of said method to be: if the background color dielectric ink of silk-screen is blocked up, to be easy to cause the fault-layer-phenomenon of the ITO of form edge; If the dielectric ink of silk-screen is not thick, be easy to again form light leakage phenomena, need to print additional again one deck ink; The method is complex process simultaneously, and the yield of product is not high, and equipment investment is large, production cost is very high.Therefore the exploitation simple, the OGS capacitive touch screen preparation method that can effectively reduce touch-screen production cost of a kind of method technique is necessary.

Utility model content

Utility model object: technical problem to be solved in the utility model is to provide a kind of OGS capacitive touch screen, this OGS capacitive touch screen not only has high visibility, and touch-control is quick on the draw, and service quality is high.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:

A kind of OGS capacitive touch screen, comprise glass substrate and flexible circuit board, described glass substrate is provided with tin indium oxide conductive film, described tin indium oxide conductive film is divided into visible area, edge electrodes position and frame position, described edge electrodes position is between described visible area and frame position, described frame position is with insulation course, described edge electrodes position is provided with conductive hole, peripheral silver slurry lead-in wire one end is overlapped on described conductive hole, and the peripheral silver slurry lead-in wire other end is connected with described flexible circuit board.

Further preferably, described glass substrate is reinforced glass substrate.

The preparation method of above-mentioned OGS capacitive touch screen, comprises the steps:

Step 1, carries out intensive treatment to glass plate, the glass pane surface sputter indium oxide layer tin conductive film after strengthening;

Step 2, adopts etching demoulding or ITO laser film-engraving technique etched circuit on tin indium oxide conductive film, makes the sensor of touch-screen;

Step 3, dielectric ink on the frame position silk-screen outside tin indium oxide conductive film edge electrodes is sentenced, and curing dielectric ink, form insulation course at tin indium oxide conductive film frame position;

Step 4, in the place's perforate of tin indium oxide conductive film edge electrodes, at tapping silk-screen electrically conductive ink, and curing conductive ink, make edge electrodes place form conductive layer;

Step 5, at the peripheral silver slurry of tapping silk-screen lead-in wire, and solidifies silver slurry, silver slurry lead-in wire is overlapped on the conducting film at edge electrodes place, adopts carbon slurry to fill with logical, thereby peripheral electrode lead-in wire is coupled together with sensor, wire jumper goes between out, obtains the inductive layer of touch-screen;

Step 6, is bonded in flexible PCB in the silver slurry bindings bit of step 5 glass plate, obtains OGS capacitive touch screen.

Beneficial effect: than prior art, OGS capacitive touch screen of the present utility model has high visibility, can be good at meeting the appearance requirement of OGS capacitive touch screen, and its touch-control is quick on the draw, service quality is high, finally can also avoid problem in existing OGS capacitive touch screen, the problem includes: form edge ITO fracture and light leak problem.

Accompanying drawing explanation

Fig. 1 is distributed with the structural representation of individual layer cabling conductive film layer on conducting glass substrate in the utility model embodiment;

Fig. 2 is for the structural representation of the silk-screen half tone of silk-screen dielectric ink in the utility model embodiment;

Fig. 3 is for the structural representation of the silk-screen half tone of silk-screen electrically conductive ink in the utility model embodiment;

Fig. 4 starches the structural representation of the silk-screen half tone of lead-in wire for the peripheral silver of silk-screen in the utility model embodiment;

Fig. 5 is the structural representation of the utility model (embodiment makes) OGS capacitive touch screen;

Wherein: conducting glass substrate 1, sensor patterns 2, edge electrodes position 3, frame position 4, visible area 5, screen frame 6, peripheral silver slurry lead-in wire 7, FPC bindings bit 8(FPC is flexible PCB); Tin indium oxide conductive film 9; Insulation course 10; Conductive hole 11.

Embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.

As shown in Fig. 1 ~ 5, OGS capacitive touch screen of the present utility model, comprise conducting glass substrate 1 and flexible circuit board 8, glass substrate is provided with tin indium oxide conductive film 9, tin indium oxide conductive film 9 is divided into visible area 5, edge electrodes position 3 and frame position 4, edge electrodes position 3 is between visible area 5 and frame position 4, frame position 4 is with insulation course 10, edge electrodes position 3 is provided with conductive hole 11, peripheral silver slurry lead-in wire 7 one end are overlapped on conductive hole 11, and peripheral silver slurry lead-in wire 7 other ends are connected with flexible circuit board 8.

Prepare above-mentioned OGS capacitive touch screen (touch-screens of 67 inches), its concrete method for making is as follows:

Step 1, gets one of the reinforced glass substrate of specification 406mm*380mm*0.7mm, first intensive treatment is carried out in its surface, and then the wherein one side at this tempered glass plates tin indium oxide conductive film;

Step 2, by harsh demoulding technique, makes to be distributed with on conducting glass substrate the conductive film layer pattern of individual layer cabling, referring to Fig. 1, completes the making (obtaining being distributed with the electro-conductive glass base material of capacitive touch screen sensor) of capacitive touch screen sensor;

Step 3, make two pull springs corresponding with capacitive touch screen frame and edge electrodes position and coupling each other and print half tone, referring to Fig. 2 and Fig. 3, be respectively in the utility model embodiment the silk printing screen plate structure schematic diagram for silk-screen dielectric ink and silk-screen electrically conductive ink; The electro-conductive glass substrate that step 2 is obtained is installed to exactitude position under the half tone of a screen printer, frame position silk-screen dielectric ink at tin indium oxide conductive film except edge electrode area, and cured printing ink, at tin indium oxide conductive film frame position, form black insulating film layer;

Step 4, in the place's perforate of tin indium oxide conductive film edge electrodes, the electro-conductive glass substrate of step 3 after perforate is installed to again to exactitude position under the half tone of another screen printer, half tone with silk-screen electrically conductive ink, at the edge electrodes position of tin indium oxide conductive film silk-screen electrically conductive ink, and cured printing ink, at edge electrodes position, form black conductive rete; Electrically conductive ink be take carbon black and graphite and is prepared from as primary raw material, and the sheet resistance value of electrically conductive ink is≤100 ohm;

Step 5, the electro-conductive glass substrate of step 4 is installed to again to exactitude position under the half tone of another screen printer, half tone with the peripheral silver slurry of silk-screen lead-in wire, referring to Fig. 4, the peripheral silver slurry of tapping (conduction aperture place) silk-screen lead-in wire (peripheral silver slurry lead-in wire is by the silver of silk-screen on black conductive ink slurry with being connected of sensor), and curing silver slurry, silver slurry lead-in wire is overlapped on the conducting film at edge electrodes place, thereby peripheral electrode lead-in wire is coupled together with sensor, adopt carbon slurry to fill with logical, wire jumper goes between out, thereby completes the making of capacitive touch screen inductive layer;

Step 6, the electro-conductive glass substrate that step 5 is obtained adopts CNC cutting, cuts into the small pieces electro-conductive glass substrate that 6 specifications are 193.9mm*114.7mm*0.7mm, and every small pieces electro-conductive glass substrate is carried out to the molding procedure such as edging, polishing and process; Flexible PCB is bundled in the electro-conductive glass substrate silver slurry bindings bit after forming processes, obtains OGS capacitive touch screen, as shown in Figure 5.

OGS capacitive touch screen of the present utility model is by first making the sensor of capacitive touch screen; The frame position silk-screen dielectric ink except edge electrode area at conductive film again; Again in the place's perforate of conductive film edge electrodes, silk-screen electrically conductive ink and silk-screen peripheral electrode silver slurry lead-in wire successively on conduction aperture, peripheral silver slurry lead-in wire is to starch by the silver of silk-screen on black conductive ink with being connected of sensor, by contact conductor by carbon starch grout, wire jumper goes between out; Then electro-conductive glass substrate is carried out to CNC cutting, again flexible PCB is bundled in the silver slurry bindings bit of electro-conductive glass substrate to (silver slurry bindings bit refers to a FPC binding contraposition position on every conducting glass substrate, at this position, first carrying out silver slurry applies, and then FPC is bundled on this position, it is to starch lead-in wire one-step print with the silver of silk-screen periphery to complete that the silver slurry of silver slurry bindings bit applies), obtain OGS capacitive touch screen.OGS capacitive touch screen preparation method of the present utility model not only can meet presentation quality and the functional requirement of OGS capacitive touch screen, but also greatly simplified the production process of OGS capacitive touch screen, improved and made the yield of product and reduced production cost.

Preparing the dielectric ink that OGS capacitive touch screen of the present utility model adopts is ito glass UV touch-screen dielectric ink common on market.

Above-mentioned embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not limited by the examples; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.

Claims

1. an OGS capacitive touch screen, it is characterized in that: comprise glass substrate and flexible circuit board, described glass substrate is provided with tin indium oxide conductive film, described tin indium oxide conductive film is divided into visible area, edge electrodes position and frame position, described edge electrodes position is between described visible area and frame position, described frame position is with insulation course, described edge electrodes position is provided with conductive hole, peripheral silver slurry lead-in wire one end is overlapped on described conductive hole, and the peripheral silver slurry lead-in wire other end is connected with described flexible circuit board.

2. OGS capacitive touch screen according to claim 1, is characterized in that: described glass substrate is reinforced glass substrate.