CN101639737B

Movatterモバイル変換

Info

Publication number: CN101639737B
Application number: CN2008101425770A
Authority: CN
Inventors: 廉健; 张磊; 梁爱军
Original assignee: Shenzhen Dpt Touch Co ltd
Current assignee: GANZHOU DPT TECHNOLOGY Co Ltd
Priority date: 2008-07-28
Filing date: 2008-07-28
Publication date: 2012-05-09
Anticipated expiration: 2028-07-28
Also published as: CN101639737A

Abstract

The invention discloses a method for manufacturing a touch screen, which comprises a silk-screen step; the combination step is as follows: after one side of the non-substrate optical adhesive tape is covered on the supporting plate, the supporting plate is attached to the non-substrate optical adhesive tape by using an automatic film covering machine; cutting a lead bending notch on the support plate adhered with the optical adhesive tape corresponding to the pressing position of the inserted lead by using a laser machine; aligning a positioning hole on one side of the lower-line ITO film with a positioning hole on the corresponding side of the supporting plate, and then attaching the lower surface of the lower-line ITO film to the supporting plate by using a laminator; the upper line ITO film and the lower line ITO film are attached through the respective positioning holes of the upper line ITO film and the lower line ITO film, and hot-press forming is carried out; cutting and inserting a lead. The touch screen manufactured by the embodiment of the invention is thin, extrusion-resistant and high in lead bending degree.

Description

The touch-screen manufacturing approach

Technical field

The present invention relates to touch screen technology, relate in particular to a kind of touch-screen manufacturing approach.

Background technology

Touch-screen is the input equipment that under institute's visual interface touches, can accomplish corresponding operating.It can make simple to operate, visual to system.Can omit and install button separately additional, thereby usable range is more and more wider.And main flow use now is the touch-screen that glass and film are combined.Because the glass that traditional touch screen is used, it will produce the problem of thickness, is dropping, and inevitably can occur in the time of extruding breaking, broken screen; Because the bending degree of glass is limited, so it has strict requirement to use location and environment.

Summary of the invention

Technical matters to be solved by this invention is: a kind of touch-screen manufacturing approach is provided, and this method can produce thin, anti-extruding, the lead-in wire bending degree is high, light transmission is good, the touch-screen of surfacing.

For solving the problems of the technologies described above, the present invention adopts following technical scheme:

A kind of touch-screen manufacturing approach, said method comprises:

The silk-screen step;

Combination step: one side will not have base material optics adhesive tape overlay on the back up pad after, utilize the automatic film covering machine with back up pad and the applying of no base material optics adhesive tape;

Pressing position with laser machine corresponding inserting lead on the back up pad of pasting the optics adhesive tape cuts out a lead-in wire bending breach;

After the pilot hole of corresponding sides on the pilot hole on one side of the ITO film that rolls off the production line and the back up pad alignd, utilize will the roll off the production line lower surface and the back up pad of ITO film of laminator to fit;

Fit with the ITO film that rolls off the production line through the ITO film of reaching the standard grade, the ITO film pilot hole separately that the rolls off the production line ITO film of will reaching the standard grade, and hot forming;

Cutting step;

The inserting lead step: will go between and insert the half-finished pressing position cut, and from the pressing that goes between of the lead-in wire bending indentation, there of back up pad.

The invention has the beneficial effects as follows:

The touch-screen integral body of embodiment of the invention manufacturing does not re-use glass; Paste out-of-flatness through having adopted first subsides to utilize the applying method of laminator to eliminate in the applying process, more on one side; The shortcoming that great amount of bubbles is arranged; Avoided conventional touch screen to use glass structure and cause thick, frangible, be prone to split, the problem of bending property difference, not only approach, crush resistance is good, can also under the state of high bending degree, use.

Below in conjunction with accompanying drawing the present invention is made further detailed description.

Description of drawings

Fig. 1 is the composition structural drawing of an embodiment of touch-screen provided by the invention.

Fig. 2 is the cross-sectional structure figure behind the casing of packing into of an embodiment of touch-screen provided by the invention.

Fig. 3 is the structure figure of an embodiment of touch-screen provided by the invention.

Embodiment

With reference to figure 1-3, they are respectively the composition structural drawing of an embodiment of touch-screen provided by the invention, cross-sectional structure figure, the structure figure behind thecasing 9 of packing into; As shown in the figure, present embodiment mainly includes following components:

Circuit layer 1 and the lead-in wire 4 (with reference to figure 3) of drawing from said circuit layer 1;

Be fitted in the ITOfilm 2 of reaching the standard grade of said circuit layer 1 upper surface;

Be fitted in the minute surface 4 of the said ITO of reaching thestandard grade film 2 upper surfaces (nonconductive surface) with no base material optics adhesive tape 3;

Be fitted in the ITOfilm 5 that rolls off the production line of said circuit layer 1 lower surface;

Be fitted in the back uppad 6 of the said ITO of rolling off theproduction line film 5 lower surfaces (nonconductive surface) with no base material optics adhesive tape 3.

During concrete the realization, said circuit layer 1 specifically includes:

The P.e.c. 11 of reaching the standard grade;

P.e.c. 12 rolls off the production line;

Be arranged on the said ITO of reaching thestandard grade film 2 and theseparation layer 13 between the ITOfilm 5 of rolling off the production line.

Wherein, said back uppad 6 is any in acrylic plate, PC plate or the PC acryl mixed plate; Said minute surface 4 is formed by the printing of polyethylene terephthalate (PET) film, and wherein, the chemical name of said acryl (Acrylic) is polymethylmethacrylate (PMMA), and the main chemical compositions of said PC plate is to gather charcoal acid fat.

Present embodiment is different from the glass structure that adopts in the conventional touch screen, and changes the structure that adopts two-layer ITO film, two-layer no base material optics adhesive tape, one deck back up pad, one deck minute surface into, has eliminated use glass to cause easy to be broken, frangible, shortcomings such as pliability difference.

In addition, the state of 180 ° of bendings uses down because present embodiment great majority need go between, and bending for ease considers, the position of crossing lead-in wire at 60 places, pressing position also is provided with a lead-inwire bending mouthfuls 600, and feasible like this lead-in wire is more prone to bend and not damaged.

Describe the method flow of an embodiment of touch-screen manufacturing process provided by the invention below in detail.

In the present embodiment, the method flow of making a touch-screen is following:

Identical with the conventional touch screen manufacturing process, present embodiment mainly includes silk-screen, make up, cut and several key steps such as inserting lead, and when specifically realizing, each key step specifically describes as follows:

Silk screen printing process:

The silk screen printing process of its ITO film of reaching the standard grade is:

After upper surface (nonconductive surface) silk-screen of the said ITO film of reaching the standard grade protection glue, oven dry, print acidproof, soda acid etching, printed silver slurry line, printing insulating matter (printing ink), printing glue successively at its lower surface (conducting surface);

The silk screen printing process of its ITO film that rolls off the production line is:

Behind lower surface (nonconductive surface) silk-screen of the said ITO of rolling off the production line film protection glue, acidproof, soda acid etching is printed on surface (conducting surface) successively above that, site (being the separation layer of lattice point structure), seal protection glue, seal silver slurry line, seal insulating matter (printing ink), seal glue are isolated in printing.

All the silk-screen process with conventional touch screen is identical for basic, its technology identical with the conventional touch screen silk screen printing process of silk screen printing process in the above-mentioned touch-screen manufacture process and parameter.

Combination step:

After overlaying on one side of said no base material optics adhesive tape on the said back up pad, utilize the automatic film covering machine that back up pad and no base material optics adhesive tape are fitted, it should be noted that and to avoid not directly and the back up pad applying through the part of automatic film covering machine effect;

Pressing position with laser machine corresponding inserting lead on the back up pad of said subsides optics adhesive tape cuts out a lead-in wire bending breach;

After the pilot hole of corresponding sides on the pilot hole on one side of the said ITO of rolling off the production line film and the back up pad alignd, utilize laminator that the lower surface and the said back up pad of the said ITO of rolling off the production line film are fitted;

Fit with the ITO film that rolls off the production line through the ITO film of reaching the standard grade, the ITO film pilot hole separately that the rolls off the production line ITO film of will reaching the standard grade, and hot forming, when specifically realizing, its hot compression parameters is under the situation of not opening the vacuum air draught, 70 ℃ of temperature, air pressure 0.12Mpa, 50 seconds time.

Cutting step: use the laser machine that the touch-screen that combines is carried out cutting of profile.

The inserting lead step: will go between and insert the half-finished pressing position cut, and from the pressing that goes between of the lead-in wire bending indentation, there of back up pad; During concrete the realization, the parameter of its pressing is: deadweight air pressure 0.05Mpa, main air pressure 0.1Mpa, 130 ℃ of initial temperatures, 160 ℃ of pressing-in temps, 135 ℃ of separation temperatures, pressing 11 seconds.

In addition, after said inserting lead step, also include:

Paste the minute surface step: the upper surface (being nonconductive surface) of the half-finished ITO of the reaching the standard grade film behind the said insertion lead-in wire is fitted through no base material optics adhesive tape and minute surface; During concrete the realization, its applying method is consistent with above-mentioned back up pad applying method.

Because in pasting the minute surface process, be easy to generate bubble, present embodiment also includes the deaeration step: the bubble that produces when removing the subsides minute surface with the deaeration machine, when specifically realizing, its deaeration parameter is air pressure 4.00Mpa, 55 ℃ of temperature, 10 minutes time.

In the present embodiment, the finished product touch-screen mainly includes five major parts: minute surface, the ITO film of reaching the standard grade, the ITO film that rolls off the production line, back up pad and lead-in wire.Wherein, the minute surface group technology of the group technology of minute surface and prior art is basic identical in the present embodiment, has just increased the step of pasting no base material optics adhesive tape at its back side; And silk screen printing process is identical with silk screen printing process of the prior art; And back up pad is generally PMMA, PC plate or PC and PMMA mixed plate, and the pilot hole on the back up pad adopts acidproof printing.

This kind touch-screen integral body does not re-use glass, pastes out-of-flatness owing to adopted first subsides to utilize the applying method of laminator to eliminate in the applying process, more on one side, and the shortcoming of great amount of bubbles is arranged; And replace the glue on one side in the traditional handicraft to bind with no base material optics adhesive tape, and also can increase surface smoothness, can not reduce the transmittance of touch-screen simultaneously; In addition; Owing to generally after lead-in wire and touch-screen carry out pressing, can stay tangible impression in the place of pressing position, present embodiment cuts out the sky of lead-in wire pressing position in advance in back up pad; To go between from the back side and to carry out pressing with main structure and be shaped, and make the touch-screen front face surface smooth more attractive in appearance.

In addition; Because great majority the need go between state of 180 ° of bendings descends use during this kind touch-screen; Bending for ease considers, the present embodiment also position of locate lead-in wire in the pressing position, the back side has also cut out a lead-in wire bending mouthful, and feasible like this lead-in wire is more prone to bend and not damaged.

Touch-screen provided by the invention can be applied to mobile phone, GPS, digital camera, PDA, MP3, MP4 etc., and all need the electronic equipment of touch input and are prone to the broken former thereby place that can not use because conventional touch screen is frangible; And changed assembly model that conventional touch screen must be stuck in interior, be directly installed on the casing surface and get final product.

The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.

Claims

1. a touch-screen manufacturing approach is characterized in that, comprising:

The silk-screen step;

Cutting step;

2. touch-screen manufacturing approach as claimed in claim 1 is characterized in that, the parameter of hot pressing is under the situation of not opening the vacuum air draught, 70 ℃ of temperature, air pressure 0.12Mpa, 50 seconds time.

3. touch-screen manufacturing approach as claimed in claim 1 is characterized in that, the parameter of lead-in wire pressing is: deadweight air pressure 0.05Mpa, main air pressure 0.1Mpa, 130 ℃ of initial temperatures, 160 ℃ of pressing-in temps, 135 ℃ of separation temperatures, 11 seconds time.

4. touch-screen manufacturing approach as claimed in claim 1 is characterized in that, after the inserting lead step, also includes:

Paste the minute surface step: the upper surface of the half-finished ITO of the reaching the standard grade film behind the inserting lead is fitted through no base material optics adhesive tape and minute surface;

Deaeration step: the bubble that produces when removing the subsides minute surface with the deaeration machine.