CN204028871U - touch module - Google Patents

Abstract

The utility model relates to a touch module contains: a substrate, a shielding layer is arranged on the substrate, and the position of the substrate on the shielding layer is defined as a non-touch area, and the non-shielding position is defined as a touch area; printing a plurality of touch electrodes on the touch area and the non-touch area of the substrate through a printing process; arranging an insulating layer on the touch electrode in the non-touch area, wherein the insulating layer is provided with a plurality of electric connection holes on the touch electrode; a conducting wire layer with a plurality of metal conducting wires is arranged on the insulating layer and is electrically connected with the touch electrodes through the electric connecting holes; and arranging a protective layer on the touch electrode and the lead layer, thereby greatly reducing the whole manufacturing working hours and reducing the manufacturing cost due to reducing the use of a photomask.

Description

touch module

technical field

The invention relates to a touch module, in particular to a touch module which can greatly reduce manufacturing cost and increase structural strength.

Background technique

With the development of the industry, digital tools such as mobile phones, personal digital assistants, notebook computers (Notebook) and tablet computers (PlanetComputer) are all developing in a more convenient, multi-functional and beautiful direction.

However, the display screens in mobile phones, personal digital assistants, notebook computers, and tablet computers are indispensable human-machine communication interfaces. The display screens of the above products will bring more convenience to the user's operations. For convenience, most of the display screens are liquid crystal display devices.

In recent years, with the rapid development and application of information technology, wireless mobile communication and information home appliances, in order to achieve more convenience, smaller volume and more humanization, many information products have been replaced by traditional input devices such as keyboard or mouse, Change to using a touch panel (Touch Panel) as an input device, among which the capacitive touch liquid crystal display device is the most popular product today.

Herein, the above-mentioned touch-sensitive liquid crystal display device is referred to as a touch panel for short. The touch panel is a layered structure including a glass substrate, a touch electrode layer, a shielding layer, an electrode wiring layer, an insulating layer, And protective layer and other structures, the above-mentioned layers are layered structures stacked on each other, the glass substrate has a touch area and a non-touch area, and the touch electrode layer is mainly coated with the aforementioned touch electrode layer by sputtering. After covering the touch area of the glass substrate, these touch electrodes are shaped by yellow light development and etching, and then a masking layer is printed on the non-touch area of the substrate by printing ink, and then sputtered The above-mentioned electrode wiring layer is covered on the shielding layer by means of yellow light development and etching to form these electrode wirings, and by printing ink, the touch electrode extension and the touch electrode in the shielding area For the non-corresponding electrode traces, print insulating ink to avoid the short circuit between the extended ends of the touch electrodes and the non-corresponding electrode traces, and then coat the aforementioned glass substrate, touch electrode layer, shielding layer, and electrode traces by coating The protective layer is covered on the layer and the insulating layer. The existing touch panel manufacturing method forms the touch electrode and electrode wiring through the process of sputtering and yellow light development and etching, which consumes the manufacturing cost of the photomask, and sputtering Therefore, the existing touch panel manufacturing process consumes a lot of cost and manufacturing time.

Contents of the invention

Therefore, in order to effectively solve the above problems, the main purpose of the present invention is to provide a touch module that can reduce manufacturing costs.

To achieve the above purpose, the present invention provides a touch module, comprising:

A substrate, on which a shielding layer is arranged, and the substrate is defined as a non-touch area at the position of the shielding layer, and the unshielded area is defined as a touch area;

A plurality of touch electrodes are printed on the touch area and the non-touch area of the substrate through a printing process;

An insulating layer is disposed on the touch electrodes in the non-touch area, and the insulating layer is formed with at least one electrical connection hole on the touch electrodes;

a wire layer with a plurality of metal wires, disposed on the insulating layer, and electrically connected to the touch electrode through the electrical connection hole; and

A protection layer is arranged on the touch electrode and the wire layer.

Preferably, the touch electrodes are set by any one of screen printing and lithography, and the touch electrodes are indium tin oxide (Indium Tin Oxide, ITO) and nano-silver and indium zinc oxide And the group consisting of indium tin zinc oxide and hafnium oxide and zinc oxide and aluminum oxide and aluminum tin oxide and aluminum zinc oxide and cadmium tin oxide and cadmium zinc oxide.

Preferably, the masking layer is formed by coating ink.

Preferably, the conductive layer is formed by either silver paste printing or sputtering.

Preferably, the insulating layer is formed by any one of screen printing and lithographic printing.

Preferably, the protective layer is any one of inorganic material or organic material, and its inorganic material is a group consisting of silicon oxide, silicon nitride, silicon oxynitride, silicon carbide, hafnium oxide, and aluminum oxide. Organic materials are photoresist, benzocyclobutane (enzocyclobutane, BCB), cycloalkenes, polyesters, polyalcohols, polyethylene oxides, polyphenylenes, resins, polyethers, and polyketones Groups of classes.

Preferably, the insulating layer is any one of inorganic material or organic material, and its inorganic material is a group consisting of silicon oxide, silicon nitride, silicon oxynitride, silicon carbide, hafnium oxide, and aluminum oxide. Organic materials are photoresist, benzocyclobutane (enzocyclobutane, BCB), cycloalkenes, polyesters, polyalcohols, polyethylene oxides, polyphenylenes, resins, polyethers, and polyketones Groups of classes.

Preferably, after the step of arranging a shielding layer on the substrate, there is a step of forming an optical compensation layer on the touch area and the non-touch area.

Preferably, the touch electrodes in the touch area can be divided into a plurality of first series electrodes and a plurality of second series electrodes, and the first series electrodes and the second series electrodes are formed through a printing process.

Preferably, at least one insulating section is printed between the first series electrode and the second series electrode.

Through the manufacturing method of the touch panel provided by the present invention, the overall manufacturing man-hours can be greatly reduced, and the manufacturing cost can be reduced by reducing the use of photomasks.

Description of drawings

FIG. 1 is a flow chart of the steps of the first embodiment of the touch module of the present invention;

FIG. 2 is a schematic structural diagram of the first embodiment of the touch module of the present invention;

3 is a schematic flow chart of the first embodiment of the touch module of the present invention;

FIG. 4 is a second structural schematic diagram of the first embodiment of the touch module of the present invention;

5 is a flow chart of the steps of the second embodiment of the touch module of the present invention;

FIG. 6 is a schematic structural diagram of a second embodiment of the touch module of the present invention.

Symbol Description

Substrate 1

masking layer 11

Non-touch area 12

Touch Area 13

Touch electrode 14

First series electrode 141

Second series electrode 142

insulation layer 15

Electrical connection hole 151

Wire layer 16

Metal wire 161

protective layer 17

Optical compensation layer 18

Insulation section 19

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

The above-mentioned purpose of the present invention and its structural and functional characteristics will be described according to the preferred embodiments of the accompanying drawings.

Please refer to Figures 1, 2, and 3, which are the flow chart of the steps and the schematic structure of the first embodiment of the manufacturing method of the touch panel of the present invention and the schematic diagram of the manufacturing process. As shown in the figure, the touch panel includes the following:

S1: Provide a substrate, set a shielding layer on the substrate 1, define the substrate at the position of the shielding layer as a non-touch area, and define the unshielded area as a touch area;

Provide a substrate 1, the material of the substrate 1 can be a transparent plate made of glass or polymer material, and form a shielding layer 11 on the substrate 1 by coating ink, and place the substrate 1 on the shielding layer 11 The position is defined as a non-touch area 12, and the unshielded area is defined as a touch area 13. The substrate 1 used in this case is a substrate 1 made of transparent glass. The pre-production operation is the same as that of the prior art, so here Will not repeat them.

S2: printing a plurality of touch electrodes on the touch area and the non-touch area of the substrate through a printing process;

A plurality of touch electrodes 14 are formed on the touch area 13 and the non-touch area 12 of the substrate 1 through a printing process, and the touch electrodes 14 are indium tin oxide (Indium Tin Oxide, ITO) or A group consisting of nanometer silver, indium zinc oxide, indium tin zinc oxide, hafnium oxide, zinc oxide, aluminum oxide, aluminum tin oxide, aluminum zinc oxide, cadmium tin oxide, and cadmium zinc oxide.

S3: disposing an insulating layer on the touch electrodes in the non-touch area, and forming at least one electrical connection hole on the touch electrodes in the insulating layer;

An insulating layer 15 is coated on the touch electrodes 14 and the shielding layers 11 in the non-touch area 12, and the insulating layer 15 is formed on the touch electrodes 14 by either screen printing or lithography and on the shielding layer 11, and at least one electrical connection hole 151 is formed on the insulating layer 15 corresponding to the touch electrodes 14. The material of the insulating layer 1516 is a material with a dielectric number of 2-4, which can be used Light-transmitting insulating materials, such as ink, or non-light-transmitting insulating materials can also be any of inorganic materials and organic materials, and the inorganic materials are silicon oxide, silicon nitride, silicon oxynitride, and silicon carbide And the group consisting of hafnium oxide and aluminum oxide, the organic material is photoresist and benzocyclobutane (enzocycl lobutane, BCB) and cycloalkenes and polyesters and polyalcohols and polyethylene oxide Classes and polyphenylenes and resins and polyethers and polyketones.

S4: disposing a wire layer with a plurality of metal wires on the insulating layer, and electrically connecting the touch electrodes through the electrical connection holes;

By any method of silver paste printing and sputtering, metal wires 161 are arranged on the insulating layer 15 and in the reserved electrical connection holes 151, so that the touch electrodes 14 to be electrically connected with these wire layers 16 is electrically connected.

S5: disposing a protective layer on the touch electrode and the wire layer.

A protection layer 17 is formed on the touch electrode 14 and the wire layer 16 by plating to protect the touch electrode 14 and the wire layer 16 .

Please also refer to FIG. 4, which is a schematic diagram of the second structure of the touch module of the present invention. As shown in the figure, the touch electrode 14 is further divided into a plurality of first series electrodes 141 and a plurality of electrodes in the touch area 13. The second series electrode 142, the first series electrode 141 and the second series electrode 142 are formed by printing process and connected to the touch electrode 14 of the non-touch area 12, and the first series electrode 141 and the second series electrode At least one insulating segment 19 is printed at the alternate position between 142 to insulate the first series electrodes 141 and the second series electrodes 142 from each other.

Please refer to Figures 5 and 6, which are the flow chart and structural diagram of the second embodiment of the touch module of the present invention. As shown in the figure, the touch module includes the following steps:

S1: Provide a substrate, set a shielding layer on the substrate, define the substrate at the position of the shielding layer as a non-touch area, and define the unshielded area as a touch area;

S2: printing a plurality of touch electrodes on the touch area and the non-touch area of the substrate through a printing process;

S3: disposing an insulating layer on the touch electrodes in the non-touch area, and forming at least one electrical connection hole on the touch electrodes in the insulating layer;

S4: disposing a wire layer with a plurality of metal wires on the insulating layer, and electrically connecting the touch electrodes through the electrical connection holes;

S5: disposing a protective layer on the touch electrode and the wire layer.

This embodiment is partly the same as the above-mentioned first embodiment, so it will not be repeated here. The difference between this embodiment and the above-mentioned first embodiment is step S1: provide a substrate, and set a shield on the substrate layer, and the substrate is defined as a non-touch area at the position of the shielding layer, and the unshielded area is defined as a touch area; and step S2: printing on the touch area and the non-touch area of the substrate through a printing process There is a step S1-1 between the plurality of touch electrodes: forming an optical compensation layer in the touch area and the non-touch area; and disposing the optical compensation layer 18 on the substrate 1 by sputtering.

The touch panel of the present invention can greatly reduce the manufacturing man-hours and reduce the use of photomasks, thereby reducing the overall manufacturing cost.

As described above, the present invention has the following advantages compared to the prior art:

1. Reduce manufacturing costs;

2. Reduce the use of photomasks.

Although the present invention is disclosed above in terms of implementation, it is not intended to limit the present invention. Any person familiar with the art may make various modifications and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of protection of the invention should be determined by the claims.

Claims (8)

1. a touch-control module, is characterized in that, comprises:

One substrate, arranges a shielding layer on this substrate, and this substrate is defined as non-touch-control district in shielding layer position, and non-shelter is defined as Touch Zone;

Multiple touch control electrode, in the Touch Zone being printed in this substrate by printing process and this non-touch-control district;

One insulation course, is arranged in the touch control electrode in this non-touch-control district, and this insulation course is formed with at least one Electrical Connector Hole in described touch control electrode;

One conductor layer with multiple plain conductor, is arranged on this insulation course, and is electrically connected this touch control electrode by described Electrical Connector Hole; And

One protective seam, is arranged on this touch control electrode and this conductor layer.

2. touch-control module as claimed in claim 1, is characterized in that, described touch control electrode is by set by screen painting and the wherein arbitrary mode of offset printing.

3. touch-control module as claimed in claim 1, is characterized in that, described shielding layer is that the mode by being coated with ink formed.

4. touch-control module as claimed in claim 1, is characterized in that, described conductor layer selects by the printing of silver slurry or sputter that wherein either type is shaping.

5. touch-control module as claimed in claim 1, is characterized in that, described insulation course is that wherein either type is shaping by screen painting and offset printing.

6. touch-control module as claimed in claim 1, is characterized in that, have more a step and form an optical compensating layer in this Touch Zone and this non-touch-control district after described substrate being arranged this step of a shielding layer.

7. touch-control module as claimed in claim 1, is characterized in that, the touch control electrode of described Touch Zone can distinguish multiple first series connection electrode and multiple second series connection electrode, and its first series connection electrode electrode of connecting with second is shaping via printing process mode.

8. touch-control module as claimed in claim 7, is characterized in that, described first series connection electrode and the second series electrical interpolar are printed with at least one insulated section.