CN102950826B - touch window - Google Patents

Abstract

The invention provides a kind of structure touching window, this touch window comprises: transparency window; Binding material layer is utilized to bond to touch panel (TSP) on a surface of described transparency window; And, be configured such that at least two or more printed patterns is layered in the upper and printed patterns of end forming station stage structure at described stacked printed patterns of described transparency window or described touch panel (TSP).According to the present invention, advantageously, by forming printed patterns with ledge structure, the bond strength cohering insulating barrier can be strengthened, this printed patterns is printed in a part for the bonding surface on the touch panel that is arranged in the bottom of transparency window, and has sandwich construction.

Description

touch window

Cross References to Related Applications

This application claims priority from Korean Patent Application No. 10-2011-0080618 filed with the Korean Intellectual Property Office on Aug. 12, 2011, the entire contents of which are hereby incorporated by reference.

technical field

The present invention relates to a structure for forming a printed pattern of a touch window.

Background technique

A touch panel is a device that is mounted on devices such as cathode ray tubes (CRTs), liquid crystal display (LCD) devices, field emission display (FED) devices, plasma display panels (PDP), and electroluminescence devices (ELD) on the display surface of the image display device, so that the user inputs predetermined information into the computer by applying pressure to the touch panel while viewing the image display device.

1 and 2 illustrate the main components of a capacitive touch panel. FIG. 1 is a plan view illustrating an adhesive structure of a multilayer structure. Fig. 2 is a cross-sectional view cut along line X in Fig. 1 . Referring to the illustrated diagram, the touch panel generally has a stacked structure, which includes an upper OCA 50 located under the transparent window 10; an upper electrode layer (ITO) 40 located under the upper OCA 50; The lower OCA 30; the lower electrode layer 20 located under the lower OCA 30, and a liquid crystal panel (LCD) 60 are bonded to the lower portion of the lower electrode layer 20. The touch screen panel (TSP) formed by bonding these different layers has a bonding area C to which the connection pad P is exposed by cutting the upper OCA 50, the upper electrode layer (ITO) 40, and the lower OCA 30, thereby Bonded to the FPCB module.

In the touch panel, a printed pattern realizing a color depending on the design of the terminal device or covering internal wiring is realized. The printed pattern is printed in a structure directly printed on the lower surface of the transparent window. However, the thickness of the printed pattern poses a problem that the bonding strength on the upper OCA 50 in the lower portion of the transparent window 10 deteriorates, which causes defects.

Contents of the invention

An aspect of the present invention provides a touch window having a printed pattern in a manner of forming a printed pattern printed on a part of an adhesive surface on a touch screen panel disposed in a lower portion of a transparent window and having a multilayer structure using a stepped structure. , to improve the bond strength on the bonded insulation.

According to an aspect of the present invention, there is provided a touch window, including: a transparent window; a touch screen panel (TSP) bonded to one surface of the transparent window with an adhesive material layer; and a printed pattern configured to In order that at least two or more printed patterns are laminated on the transparent window or the touch screen panel (TSP), and a stepped structure is formed at the end of the laminated patterns.

In addition, the printed patterns may be stacked in a structure in which the width of the pattern gradually becomes narrower toward the printed pattern of the uppermost layer that is based on the transparent window or the touch screen panel (TSP ) is the layer whose printed pattern is the farthest from the lowermost layer of the nearest layer.

In addition, the printing pattern may include: a first printing pattern, which is the nearest pattern based on the transparent window or the touch screen panel (TSP); and a second printing pattern, the second printing pattern The width of the pattern is wider or narrower than the first printed pattern.

In addition, the printed patterns may include: a first printed pattern that is the closest pattern based on the transparent window; a second printed pattern that is wider than the first printed pattern. a narrow pattern; and a third printed pattern narrower in width than the second printed pattern.

In addition, the printed pattern may be formed on the transparent window, or on a contact surface between the touch screen panel and the adhesive material layer.

In addition, the printed pattern may be disposed in an inactive area of the touch screen panel or an area of the transparent window corresponding to the inactive area.

Furthermore, the laminated structure of the printed pattern may be configured such that roughness may be formed on one or more layers of the laminated printed pattern.

In addition, the touch screen panel in the structure of the above-mentioned touch window may include: a substrate bonded to one surface of the transparent window by using the adhesive material layer, and patterned on the one surface of the substrate and combined with the The first and second sensing electrode patterns on the opposite surface of one surface.

In addition, the touch screen panel may include: a first sensing electrode pattern layer bonded to the transparent window using a first adhesive material layer and having a layer formed on the first sensing electrode. a sensing electrode on one surface of the pattern layer; and a second sensing electrode pattern layer bonded to the other surface of the first bonding material layer using a second bonding material layer And has a sensing electrode formed on one surface of the second sensing electrode pattern layer.

Also, the touch screen panel may include first and second sensing electrode patterns formed directly on the transparent window and patterned to be insulated from each other.

In addition, the touch screen panel may include a substrate bonded to one surface of the transparent window using the adhesive material layer; and first and second substrates directly formed on one surface of the substrate and patterned to be insulated from each other. The second sensing electrode pattern.

According to an exemplary embodiment of the present invention, by forming a printed pattern printed on a part of the bonding surface on the touch screen panel disposed in the lower portion of the transparent window and having a multi-layer structure in a stepped structure, the bonding on the insulating layer is effectively improved. of bond strength.

Description of drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate example embodiments of the invention and, together with the detailed description, serve to explain principles of the invention. In the attached picture:

FIG. 1 and FIG. 2 are schematic diagrams about the structure of a conventional touch window;

3 and 4 are schematic diagrams illustrating structures for forming printed patterns according to the present invention;

5 to 7 are various exemplary embodiments illustrating the structure of a touch screen panel according to the present invention.

Detailed ways

Exemplary embodiments according to the present invention will be described more fully hereinafter with reference to the accompanying drawings. In the description with reference to the drawings, the same numerals denote the same elements throughout the specification regardless of the reference numerals in the drawings, and repeated explanations of the same elements are omitted. Terms such as first and second may be used to explain various constituent elements, but the constituent elements should not be limited to these terms. These terms are only used to distinguish one constituent element from other constituent elements.

3 and 4 are schematic diagrams illustrating forming a printing pattern P in a touch screen panel (P) and a transparent window 100 for explaining the spirit of the present invention.

Referring to the structures illustrated in FIGS. 3 and 4 , a touch window according to an example embodiment of the present invention may include: a transparent window 100; and a printed pattern P formed on the transparent window or the touch screen panel (TSP). That is, the touch window may include: a transparent window 100 for receiving contact with the outside; and a visible area V/A and a dead zone disposed in a lower portion of the transparent window and using a sensing electrode pattern layer. Touch Screen Panel (TSP) for Zone D/A.

Specifically, referring to FIG. 3 , in the above structure, (a) the printed pattern printed on the transparent window 100 is implemented in a structure in which at least two or more layers are stacked. This may be generally arranged in an ineffective area for realizing a function of covering a wiring pattern of a touch screen panel so as not to be visible from the outside and a design effect of a product. In addition, as for the printing pattern, in this case, in order to realize the function of the printing pattern, the printing pattern may be generally formed in a structure in which the printing pattern is repeatedly printed as a plurality of layers. In the case where the printed pattern is realized in a multi-layer structure, similar to that illustrated in FIG. (thickness), an air layer A is formed between the adhesive material layer and the printed pattern P, and this space causes adhesive defects.

In order to prevent this, in the present invention, the printing pattern P is formed in a laminated structure. In addition, similar to the structure illustrated in FIG. 4, in addition to the laminated structure of the multi-layer printed pattern, the printed pattern P can also be laminated in the structure illustrated in (a), so that the end portion of the printed pattern can continuously form a stepped structure. . That is, by forming the length of the printed pattern 101' bonded to the lowermost portion of the transparent window 100 to be longer than the length of the printed pattern 102' laminated on its upper portion, a gradient step structure is realized. Similar to the structure exemplified in (b), in the case of bonding the touch screen panel (TSP) to the transparent window with an adhesive material layer, the stepped structure can minimize the air area A1, A2. Accordingly, the printed pattern can be implemented in a structure capable of improving the bonding strength of the laminated structure causing bonding defects.

Furthermore, in the present invention, in order to improve the bonding strength between the multi-layer printed pattern and the adhesive material layer, the printed pattern may be realized in a structure that realizes a rough portion on the surface of the printed pattern. That is, in the case of stacking printed patterns in a multi-layer structure, regularly stacked printed patterns may be formed in a step structure. In addition, a rough portion may be formed on the surface of each printed pattern, or may be provided on the uppermost layer, so that the adhesive strength on the adhesive material layer P may be improved.

As described above, the printed pattern in the touch window according to the exemplary embodiment of the present invention may be formed on the transparent window as illustrated in FIGS. district.

Hereinafter, a configuration of a touch screen panel to which a structure of a printing pattern according to another exemplary embodiment of the present invention is applied will be briefly explained. In the above structure, a touch screen panel (TSP) formed in a lower portion of the transparent window 100 may be formed in the structure illustrated in FIG. 5 .

That is, a touch screen panel (TSP) may be formed in a structure including a substrate 130, 110, and sensing electrode patterns 132, 112 patterned on one surface of the substrate or on the other surface opposite to the one surface. That is, the touch screen panel (TSP) may be configured to include a first sensing electrode pattern layer bonded to the transparent window 100 using the first adhesive material layer 140 and having a pattern formed on the first sensing electrode pattern layer 140 . sensing electrode pattern 132 on one surface of the sensing electrode pattern layer; and a second sensing electrode pattern layer bonded to the first sensing electrode layer using a second adhesive material layer and has a sensing electrode pattern 112 formed on one surface of the second sensing electrode pattern layer. Specifically, in this case, each of the first sensing electrode pattern 132 and the second sensing electrode pattern 112 may be implemented in a structure in which they are respectively formed on different substrates 130 , 110 from each other and thereby spaced apart from each other. In addition, wiring patterns 131, 111 connected to the sensing electrode patterns 132, 112 may be formed. In addition, the printing pattern having the above-described multi-layer structure may be implemented on one surface of the transparent window 100 corresponding to the region where the wiring pattern is formed. Specifically, in this case, as previously described, the printed pattern has a stepped structure, so that the bonding strength can be enhanced.

In this case, the bonding material layer may be an OCA film, and the first and second sensing electrode pattern layers may be configured such that the electrode pattern layers are made of ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide) on the substrate. material) and ZnO (Zinc Oxide).

In other words, unlike the structure in FIG. 5 , but as illustrated in FIG. 6 , the touch screen panel bonded to the lower portion of the transparent window 200 using the adhesive material layer to the substrate 230 on one surface of the transparent window 200; and the first and second sensing electrode patterns 232 patterned on one surface of the substrate 230 and the other surface opposite to the one surface. In addition, the touch screen panel may be configured to further include a protective film 210 for sensing electrode patterns including a lower surface of the substrate 230 . Of course, in this case, on the above-mentioned transparent window 200, the printing pattern P mentioned in FIGS. 3 and 4 may be formed in a multi-layer stacked structure having a stepped structure.

In other words, as shown in FIG. 7 , the transparent window 300 may be formed, the sensing electrode pattern 312 may be patterned on the cross-section of the substrate 310, and the wiring portion 311 may be simultaneously formed with the sensing electrode pattern. However, the first and second sensing electrode patterns may be implemented on the same plane as each other. In addition, the first sensing electrode layer for determining the first axis (for example, X-axis) component of the contact can be patterned on one surface, and the second sensing electrode layer can be combined with the first sensing electrode layer by realizing A disposition of the layer insulation, patterning the second sense electrode layer for defining a second axis (eg, Y axis) component of the contacts. In this case, as previously described, the printing pattern P having the stepped structure of FIG. 4 may be formed on one surface of the transparent window 300 .

Of course, as an example, FIG. 7 shows that the sensing electrode patterns are formed in the same plane of the separation substrate 310 . However, without the substrate 310 , the sensing electrode pattern layer may be directly formed on one surface of the transparent window 300 using a deposition process and a coating process for the sensing electrode pattern.

A touch window according to another example embodiment of the present invention may be attached to various display devices. That is, these display devices may be organic light emitting devices, plasma displays, and liquid crystal display devices. At this time, in order to prevent malfunction of the touch sensing panel due to noise elements generated by driving the display device being transmitted to the touch screen panel (TSP), a shielding layer may be selectively disposed between the touch sensing panel and the display device.

As mentioned above, in the detailed description of the present invention, the detailed exemplary embodiments of the present invention have been described, but it will be apparent to those skilled in the art that modifications and improvements can be made without departing from the spirit and scope of the present invention. transform. It is therefore to be understood that the foregoing is illustrative of the invention and is not to be construed as limited to the particular embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included in the appended claims and other embodiments. within the range of equivalents.

Claims (11)

1. A touch window, comprising: transparent window; a touch screen panel bonded to one surface of the transparent window with a layer of adhesive material; and a first printed pattern on said transparent window or said touch screen panel, and a second printed pattern on said first printed pattern, Wherein, the length of the first printing pattern is longer than the length of the second printing pattern. 2. The touch window according to claim 1, further comprising a first air area formed between the adhesive material layer and the first printed pattern, and a first air area formed between the adhesive material layer and the first printing pattern. a second air area between the two printed patterns, Wherein, the first air area and the second air area are separated and do not contact each other. 3. The touch window of claim 1, wherein the second printed pattern is separated from the transparent window by the first printed pattern. 4. The touch window of claim 1, wherein the adhesive material layer is buried in a space between the first and second printed patterns and the touch screen panel. 5. The touch window according to claim 1, wherein the transparent window comprises a visible area and a dead area, A first thickness of the adhesive material layer corresponding to the visible area and a second thickness of the adhesive material layer corresponding to the dead area are different from each other. 6. The touch window of claim 1, wherein the second printed pattern comprises a rough surface. 7. The touch window of claim 1, further comprising a third printing pattern on the second printing pattern. 8. The touch window according to claim 7, wherein a length of the third printed pattern is shorter than a length of the second printed pattern. 9. The touch window of claim 1, wherein the touch screen panel comprises: a first substrate; a first sensing electrode on the first substrate; a second substrate; and The second sensing electrode, wherein the first sensing electrode is set to face the bonding material layer. 10. The touch window according to claim 1, wherein the touch screen panel comprises: a substrate; a first sensing electrode on one surface of the substrate; and a second sensing electrode on the other surface of the substrate. Sensing electrodes, wherein the first sensing electrodes are arranged to face the bonding material layer. 11. The touch window according to claim 1, wherein the touch screen panel comprises: a substrate; and a first sensing electrode and a second sensing electrode, the first sensing electrode and the second sensing electrode are patterned on the same surface of the substrate and are insulated from each other.