CN202584061U

CN202584061U - Touch panel

Info

Publication number: CN202584061U
Application number: CN 201220028385
Authority: CN
Inventors: 谢燕俊; 余思璐; 石恩实; 江耀诚
Original assignee: TPK Touch Solutions Xiamen Inc
Current assignee: TPK Touch Solutions Xiamen Inc
Priority date: 2012-01-06
Filing date: 2012-01-06
Publication date: 2012-12-05
Anticipated expiration: 2022-01-06

Abstract

The utility model relates to a touch panel which comprises an inductive electrode layer and a patterned protective layer covering the inductive electrode layer. A forming pattern of the patterned protective layer is identical to that of the inductive electrode layer. The utility model further provides a touch panel manufacturing method. Since the patterned protective layer covers the inductive electrode layer of the touch panel, the inductive electrode layer is isolated from contacting with oxygen by means of the patterned protective layer during baking, influences of oxygen on square resistance change of conductive materials under high-temperature baking can be overcome, and accuracy in identification of touch positions of the touch panel is improved.

Description

Contact panel

Technical field

The utility model is relevant for touch technology, particularly about a kind of contact panel and manufacturing approach.

Background technology

Common contact panel is a plurality of transparency electrodes that intersection insulated from each other is set on the surface of substrate, and these transparency electrodes are connected with controller by perimeter circuit.When touch object near or during the touching contact panel, can cause the variation of the interelectrode capacitance of touch position, those capacitance variations signals are sent to controller to carry out computing by perimeter circuit, can confirm the coordinate of touch position by this.

But be to adopt optical lithography to make the above-mentioned transparency electrode (like the conductive unit and the axial conductive unit of Y of X axis), then need carry out the program of high-temperature baking afterwards again.In the process of baking; The employed transparent conductive film material of transparency electrode toasts under the environment of aerobic; Can cause the rising of its square resistance; Make the actual value of the line resistance of transparency electrode be far longer than theoretical value, X axle and Y shaft position that the system that so can influence correctly identifies on contact panel to be touched.

The utility model content

The utility model provides a kind of contact panel and manufacturing approach; Cover on the induction electrode layer by the patterning protective seam; In the process of baking; The isolated induction electrode layer of patterning protective seam contacts with oxygen, overcomes oxygen to the influence of conductive material in high-temperature baking condition lower block resistance variations, and improves the precision of contact panel identification touch position.

The utility model system provides a kind of contact panel, comprising: an induction electrode layer; And a patterning protective seam, cover this this induction electrode layer; Wherein, the formation pattern of this patterning protective seam is identical with the formation pattern of this induction electrode layer.

Contact panel according to the utility model further comprises: a substrate, this substrate have a touch area and center on a neighboring area of this touch area, and this induction electrode layer is laid in this touch area.A plurality of overlap joint end points are distributed in the edge of this touch area, electrically connect this induction electrode layer.Perimeter circuit is distributed in the neighboring area of this substrate, and electrically connecting should overlap joint end points.

According to the contact panel of the utility model, wherein, this patterning protective seam further covers this perimeter circuit and identical with the formation pattern of these perimeter circuits.

The utility model system provides a kind of manufacturing approach of contact panel; Comprise and toast the step that an induction electrode layer and covers the patterning protective seam of said induction electrode layer simultaneously, and the formation pattern of this patterning protective seam is identical with the formation pattern of this induction electrode layer.

According to the manufacturing approach of the contact panel of the utility model, wherein, toast the step of this induction electrode layer and this patterning protective seam simultaneously, be with this induction electrode layer of high-temperature baking and this patterning protective seam.

According to the manufacturing approach of the contact panel of the utility model, toast at the same time before the step of this induction electrode layer and this patterning protective seam, more comprise: be coated with the touch area of an inductive layer in a substrate; Be coated with a protective seam on this inductive layer; This protective seam of patterning is to form this patterning protective seam; And this inductive layer of patterning is to form this induction electrode layer.

Description of drawings

Fig. 1 is the floor map of the contact panel of the utility model;

Fig. 2 is the floor map of the contact panel of Fig. 1 unprotect layer;

Fig. 3 is that the contact panel of Fig. 1 is in the diagrammatic cross-section of profile line III-III;

Fig. 4 is the synoptic diagram of first processing procedure of the contact panel of the utility model;

Fig. 5 is the synoptic diagram of second processing procedure of the contact panel of the utility model;

Fig. 6 is the synoptic diagram of the 3rd processing procedure of the contact panel of the utility model;

Fig. 7 is the synoptic diagram of the 4th processing procedure of the contact panel of the utility model; And

Fig. 8 is the synoptic diagram of the 5th processing procedure of the contact panel of the utility model.

[main element symbol description]

40 substrates

50 contact panels

51 second leads

53 second conductive units

54 first conductive units

55 induction electrode layers

The 55A inductive layer

56 collets

58 first leads

60 perimeter circuits

64 overlap joint end points

70 patterning protective seams

The 70A protective seam

80 neighboring areas

90 touch areas

Embodiment

Have the knack of under the utility model as one of technical field art and can further understand the utility model for making; The hereinafter spy enumerates several preferred embodiments of the utility model; And cooperating appended graphicly, the effect reached is desired by constitution content and the institute that specifies the utility model.

Fig. 1 is the floor map of the contact panel of the utility model, and Fig. 2 is the floor map of the contact panel of Fig. 1 unprotect layer, and Fig. 3 is that the contact panel of Fig. 1 is in the diagrammatic cross-section of profile line III-III.

Contact panel 50 comprises induction electrode layer 55 and patterning protective seam 70, and wherein patterning protective seam 70 is covered on the induction electrode layer 55, and the formation pattern of patterning protective seam 70 is identical with the formation pattern of induction electrode layer 55.

Above-mentioned induction electrode layer 55 comprises a plurality of first conductive units 54 of edge first axial distribution and connects a plurality of first leads 58 of first conductive unit 54, and a plurality of second conductive units 53 and a plurality of second lead, 51 (see figure 3)s that are connected second conductive unit 53 of edge second axial distribution.Contact panel 50 also is provided with a plurality of collets 56, and each collets 56 between first lead 58 and second lead 51 of correspondence, uses to make between first conductive unit 54 and second conductive unit 53 being electrically insulated each other respectively.Wherein, collets 56 are to be processed by transparent insulation material.

Patterning protective seam 70 further is to cover on first conductive unit 54, second conductive unit 53 and second lead 51; The formation pattern of patterning protective seam 70 is identical with the formation pattern of first conductive unit 54, second conductive unit 53 and second lead 51; Certainly; Patterning protective seam 70 also can cover and be exposed on outer first lead 58 and collets 56, protects those elements not receive the baking of follow-up high temperature process by this.

Contact panel 50 more comprises a substrate 40; Substrate 40 has a touch area 90 and centers on a neighboring area 80 of touch area 90; Wherein above-mentioned induction electrode layer 55 is laid in the touch area 90 of substrate 40, is used to respond in user's touch action and produces sensor signal.Wherein, Substrate 40 can be transparent glass substrate or plastic substrate; The material of plastic substrate specifically comprise but be not limited to polyethylene terephthalate (Polyethylene Terephthalate, PET), polycarbonate (Poly Carbonate, PC), tygon (Polyethylene; PE), polymethylmethacrylate (Polymethylmethacrylate, PMMA).

This contact panel 50 also comprises a plurality of overlap joint end points 64 and a plurality of perimeter circuits 60.Wherein, Overlap joint end points 64 is distributed in the edge of touch area 90 and electrically connects induction electrode layer 55; Perimeter circuit 60 is distributed in the neighboring area 80 of substrate 40 and electrically connects overlap joint end points 64; Perimeter circuit 60 electrically connects with induction electrode layer 55 via overlap joint end points 64, is used for the sensor signal of induction electrode layer 55 is sent to controller (not shown) to carry out computing via overlap joint end points 64, confirms the coordinate of touch position on contact panel 50 by this.

Patterning protective seam 70 can further cover perimeter circuit 60 and identical with the formation pattern of perimeter circuit 60.Wherein, perimeter circuit 60 and overlap joint end points 64 are to be processed by metal or transparent conductive material, and patterning protective seam 70 is to be processed by transparent insulation material.

Perimeter circuit 60 via be configured in disalignment to overlap joint end points 64 and be electrically connected at first conductive unit 54 and second conductive unit 53 respectively; So can confirm the coordinate of touch position on contact panel 50 by this by perimeter circuit 60 with being sent to controller (not shown) to carry out computing because of touching the capacitance variation that produces on first conductive unit 54 and second conductive unit 53.

In the structure of above-mentioned contact panel 50, first conductive unit 54, second conductive unit 53 and second lead 51 are to be processed by transparent conductive material, and first lead 58 is to be processed by metal or transparent conductive material.

The method for making of above-mentioned contact panel 50 is after covering induction electrode layer 55 with patterning protective seam 70; Comprise the step of toasting this induction electrode layer 55 and patterning protective seam 70 simultaneously, and the step of baking is with high-temperature baking induction electrode layer 55 and patterning protective seam 70.The step of concrete grammar is explained as follows:

Fig. 4 is the synoptic diagram of first processing procedure of the contact panel of the utility model.This processing procedure is to form one first lead 58 in the touch area 90 of substrate 40; Form the edge of a plurality of overlap joint end points 64, wherein overlap end points 64 and electrically connect with above-mentioned mentioned induction electrode layer 55 in the touch area 90 of substrate 40.In this processing procedure, first lead 58 can be made respectively or synchronously according to different the considering of design with overlap joint end points 64.

Fig. 5 is the synoptic diagram of second processing procedure of the contact panel of the utility model.Neighboring area 80 at substrate 40 forms perimeter circuit 60, makes perimeter circuit 60 be electrically connected at overlap joint end points 64.

Wherein, above-mentioned first lead 58, overlap joint end points 64 and perimeter circuit 60 can metal or transparent conductive material process, and first processing procedure is with second processing procedure can be distinguished or making synchronously.

Fig. 6 is the synoptic diagram of the 3rd processing procedure of the contact panel of the utility model.On first lead 58, form collets 56 with transparent insulation material.

Fig. 7 is the synoptic diagram of the 4th processing procedure of the contact panel of the utility model.Be coated with the touch area 90 of an inductive layer 55A in substrate 40, can be coated with a kind of transparent conductive material on first lead 58 and collets 56 to form inductive layer 55A.

Fig. 8 is the synoptic diagram of the 5th processing procedure of the contact panel of the utility model.Be coated with a protective seam 70A on inductive layer 55A, can be coated with a kind of transparent insulation material and go up to form protective seam 70A in inductive layer 55A.

After above-mentioned the 5th processing procedure; Be this inductive layer of patternable 55A with this protective seam 70A to form induction electrode layer 55 and patterning protective seam 70 (structure as shown in Figure 1 is accomplished figure) respectively, the formation pattern of this patterning protective seam 70 is identical with the formation pattern of induction electrode layer 55.Wherein patterning protective seam 70A and patterning inductive layer 55A can carry out or carry out respectively simultaneously.

The step that forms induction electrode layer 55 at patterning this inductive layer 55A comprises: axially form first conductive unit 54 along first, wherein first conductive unit 54 is electrically connected to first lead 58 of first processing procedure in twos; Axially form second conductive unit 53 and second lead 51 that is connected second conductive unit 53 along second.Wherein, be electrically insulated each other between first conductive unit 54 and second conductive unit 53, as by collets 56 being set between first lead 58 and second lead 51, so that be electrically insulated each other between first conductive unit 54 and second conductive unit 53.After this step is accomplished, the structure in the touch area 90 promptly as shown in Figure 2.

In addition, in five processing procedure of coating protective seam 70A on inductive layer 55A, can be coated with protective seam 70A simultaneously on perimeter circuit 60.And in the step of patterning protective seam 70A, on perimeter circuit 60, form corresponding patterning protective seam 70 simultaneously, wherein, this patterning protective seam 70 covers perimeter circuit 60 and identical with the formation pattern of perimeter circuit 60.

Patterning protective seam 70 has the formation pattern identical with first conductive unit 54, second conductive unit 53, second lead 51 and perimeter circuit 60.Certainly, patterning protective seam 70 also can cover and be exposed on outer first lead 58, collets 56 and the overlap joint end points 64, protects those elements not receive the baking of follow-up high temperature process by this.

After the program of accomplishing patterning, then carry out the program of high-temperature baking; Because patterning protective seam 70 is covered on first conductive unit 54, second conductive unit 53 and second lead 51; Therefore first conductive unit 54, second conductive unit 53 and second lead 51 of high-temperature baking can't contact with oxygen, so first conductive unit 54, second conductive unit 53 and second lead 51 have preferable square resistance under the high-temperature baking condition.

A kind of contact panel and manufacturing approach that the utility model system provides; Cover on the induction electrode layer by protective seam; Make follow-up in the process of baking; The isolated induction electrode layer of protective seam contacts with oxygen, overcomes oxygen to the influence of induction electrode layer in high-temperature baking condition lower block resistance variations, and improves the precision of product yield and contact panel identification touch position.

Though the utility model is narrated as above with reference to preferred embodiment and illustrative accompanying drawing, is restricted person precisely because should not be regarded as.Be familiar with this art and make various modifications, omission and variation, all do not leave institute's opinion scope of the claim of the utility model holding within its form and the concrete example.

Claims

1. a contact panel is characterized in that, comprising:

One induction electrode layer; And

One patterning protective seam covers this induction electrode layer;

Wherein, the formation pattern of this patterning protective seam is identical with the formation pattern of this induction electrode layer.

2. contact panel as claimed in claim 1 is characterized in that, further comprises: a substrate, this substrate have a touch area and center on a neighboring area of this touch area, and this induction electrode layer is laid in this touch area.

3. contact panel as claimed in claim 2 is characterized in that, further comprises:

A plurality of overlap joint end points are distributed in the edge of this touch area, electrically connect this induction electrode layer.

4. contact panel as claimed in claim 3 is characterized in that, further comprises:

A plurality of perimeter circuits are distributed in the neighboring area of this substrate, electrically connect these overlap joint end points.

5. contact panel as claimed in claim 4 is characterized in that, this patterning protective seam further covers these perimeter circuits and identical with the formation pattern of these perimeter circuits.

6. contact panel as claimed in claim 4, wherein, these perimeter circuits are made by metal or transparent conductive material.

7. contact panel as claimed in claim 1 is characterized in that, this induction electrode layer comprises:

A plurality of first conductive units of edge first axial distribution, wherein first lead of the correspondence of first conductive unit electric connection in twos;

Axially form a plurality of second conductive units and a plurality of second leads that are connected these second conductive units along second;

Wherein, be electrically insulated each other between this first conductive unit and this second conductive unit.

8. contact panel as claimed in claim 7 is characterized in that, more comprises a plurality of collets, is arranged at respectively between this first lead and this second lead.

9. contact panel as claimed in claim 8 is characterized in that, this collets system is processed by transparent insulation material.

10. contact panel as claimed in claim 7, wherein, these first conductive units, these second conductive units and these second leads are processed by transparent conductive material, and these first lead systems are made of metal.

11. contact panel as claimed in claim 7 is characterized in that, these first conductive units, these second conductive units, these first leads, these second lead systems are processed by transparent conductive material.

12., it is characterized in that these patterning protection series of strata are processed by transparent insulation material like claim the 1 described contact panel.