KR101745550B1

KR101745550B1 - Touch panel and display apparatus using the same

Info

Publication number: KR101745550B1
Application number: KR1020150152618A
Authority: KR
Inventors: 양희석; 유재형; 조윤일
Original assignee: 엘지디스플레이 주식회사
Priority date: 2015-10-30
Filing date: 2015-10-30
Publication date: 2017-06-09
Also published as: KR20170050728A

Abstract

Disclosure of Invention Technical Problem [8] The present invention provides a touch panel configured to display touch lines connected to touch electrodes using black interference, and a display using the touch panel. To this end, the touch panel according to the present invention includes a base substrate, a touch electrode unit, and a touch line unit. The touch electrode unit includes a first touch electrode and a second touch electrode which are disposed in a display region of the base substrate and are insulated from each other. The touch line unit may include a first touch line disposed in a non-display area of the base substrate and connected to the first touch electrode and a second touch line connected to the second touch electrode. The touch line unit may include a metal film formed on the upper surface of the base substrate and connected to the touch electrode unit and made of opaque metal, a transparent film formed on the upper surface of the metal film and made of a transparent material, And a semitransparent film formed on the top surface and made of a semitransparent material.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch panel,

The present invention relates to a touch panel.

A touch panel capable of inputting information directly to a screen by using a finger or a pen in place of a keypad that has been applied to a conventional mouse, keyboard, or portable electronic device as an input device of a flat panel display Is widely used. The touch panel has been widely applied because it has the advantage of being easily operated by anyone.

The touch panel may be a portable terminal such as a mobile phone, an MP3, a PDA, a PMP, a PSP, a portable game machine, a DMB receiver, a tablet PC, and a refrigerator, such as a navigation, industrial terminal, a notebook computer, , A microwave oven, a washing machine, and the like.

The manufacturing method of the touch panel is classified into an in-cell touch type, an on-cell touch type, an add-on type, and an add-on type according to a structure in which a display panel on which an image is displayed and a touch panel are combined. And a hybrid type.

FIG. 1 shows an example of a conventional display device, and particularly shows a display device manufactured using an add-on method.

In the add-on method, a touch panel 20 manufactured independently of the display panel 10 is attached to the upper surface of the display panel 10. In this case, the cover glass 30 is attached to the upper surface of the touch panel 20.

1, the touch panel 20 includes a base substrate 21, a second touch electrode 22 disposed in the display region C and supplied with a touch signal, a second touch electrode 22 A first touch electrode 24 connected to the display region A and disposed in the non-display region A, a first touch electrode 24 disposed in the display region C and insulated from the second touch electrode 22, And a first touch line (25) connected to the first touch electrode (24) and disposed in the non-display area (A).

The second touch electrode 22 and the first touch electrode 24 are generally formed of a transparent electrode such as indium tin oxide (ITO).

The second touch line 23 and the first touch line 25 are formed of a metal having a conductivity higher than that of the transparent electrode.

The second touch line 23 and the first touch line 25 are connected to the first touch line 23 and the second touch line 25 in order to prevent reflection of light by the second touch line 23 and the first touch line 25 formed of opaque metal. And is disposed in the non-display area (A) of the apparatus.

In order to prevent reflection of light by the second touch line 23 and the first touch line 25, a black matrix 32 is provided on the cover substrate 31 constituting the cover glass 30 do.

In this case, the second touch line 23 and the first touch line 25 should not cover the display area C but must be covered by the black matrix 32.

In addition, the black matrix 32 does not cover the display area C or expose the non-display area A. Therefore, a constant interval B is formed between the black matrix 32 and the display area C, taking into account errors that may occur in the display device manufacturing process.

Therefore, the size of the non-display area A constituting the outer periphery of the display device is increased.

An object of the present invention is to provide a touch panel and a display device using the touch panel, wherein the touch lines connected to the touch electrodes are displayed in black using light interference.

According to an aspect of the present invention, there is provided a touch panel including a base substrate, a touch electrode unit, and a touch line unit. The touch electrode unit includes a first touch electrode and a second touch electrode which are disposed in a display region of the base substrate and are insulated from each other. The touch line unit may include a first touch line disposed in a non-display area of the base substrate and connected to the first touch electrode and a second touch line connected to the second touch electrode. The touch line unit may include a metal film formed on the upper surface of the base substrate and connected to the touch electrode unit and made of opaque metal, a transparent film formed on the upper surface of the metal film and made of a transparent material, And a semitransparent film formed on the top surface and made of a semitransparent material.

According to an aspect of the present invention, there is provided a display device including a display panel, a touch panel, and a cover glass. In the display panel, an image is output. The touch panel is attached to the upper surface of the display panel and senses a touch. The cover glass is attached to the upper surface of the touch panel to protect the touch panel. The touch panel includes a base substrate, a touch electrode unit disposed on a display region of the base substrate, the touch electrode unit including a first touch electrode and a second touch electrode insulated from each other, And a touch line unit including a first touch line connected to the first touch electrode and a second touch line connected to the second touch electrode. The touch line unit may include a metal film formed on the upper surface of the base substrate and connected to the touch electrode unit and made of opaque metal, a transparent film formed on the upper surface of the metal film and made of a transparent material, And a semitransparent film formed on the top surface and made of a semitransparent material. The cover glass is provided in the non-display area and includes a black matrix covering the touch line part.

According to the present invention, since the touch lines connected to the touch electrodes can be seen as black due to the interference of light, the touch lines can be disposed close to the display region. Thus, the width of the non-display area of the display device can be reduced.

1 is an exemplary view showing a conventional display device.
2 is an exemplary view showing a display device according to the present invention;
3 is a plan view showing a configuration of a display device according to the present invention.
4 is an exemplary view for explaining a function of a touch line unit applied to a display device according to the present invention;
FIG. 5 is an exemplary view comparing the size of the non-display area of the display device according to the present invention with the size of the non-display area of the conventional display device. FIG.
6A to 6G are various exemplary views of a touch panel according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. To fully disclose the scope of the invention to a person skilled in the art, and the invention is only defined by the scope of the claims.

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

The shapes, sizes, ratios, angles, numbers, and the like disclosed in the drawings for describing the embodiments of the present invention are illustrative, and thus the present invention is not limited thereto. Like reference numerals refer to like elements throughout the specification. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In the case where the word 'includes', 'having', 'done', etc. are used in this specification, other parts can be added unless '~ only' is used. Unless the context clearly dictates otherwise, including the plural unless the context clearly dictates otherwise.

In interpreting the constituent elements, it is construed to include the error range even if there is no separate description.

In the case of a description of the positional relationship, for example, if the positional relationship between two parts is described as 'on', 'on top', 'under', and 'next to' Or " direct " is not used, one or more other portions may be located between the two portions.

In the case of a description of a temporal relationship, for example, if the temporal relationship is described by 'after', 'after', 'after', 'before', etc., May not be continuous unless they are not used.

The term " at least one " should be understood to include all possible combinations from one or more related items. For example, the meaning of 'at least one of the first item, the second item and the third item' means not only the first item, the second item or the third item, but also the second item, the second item and the third item, Means any combination of items that can be presented from more than one.

The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical spirit of the present invention.

It is to be understood that each of the features of the various embodiments of the present invention may be combined or combined with each other, partially or wholly, technically various interlocking and driving, and that the embodiments may be practiced independently of each other, It is possible.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a view showing an example of a display device according to the present invention, in particular, a display device manufactured using an add-on method. 3 is a plan view showing a configuration of a display device according to the present invention.

2 and 3, the display apparatus according to the present invention includes a display panel 100 to which an image is output, a touch panel 200 (see FIG. 1) attached to the upper surface of the display panel 100, And a cover glass 300 attached to the upper surface of the touch panel 200 and protecting the touch panel 200.

The display panel 100 may be a liquid crystal display panel including liquid crystal, an organic light emitting display panel having organic light emitting diodes, or various other types of display panels.

In the display panel 100, gate lines, data lines, and pixels are provided. The display panel 100 includes a gate driver for supplying a gate pulse to the gate lines, a data driver for supplying a data voltage to the data lines, and a control driver for controlling the gate driver and the data driver .

The display panel 100 outputs an image and the image output from the display panel 100 is output to the outside through the touch panel 200 and the cover glass 300.

The touch panel 200 receives a touch signal and generates a sensing signal.

The touch panel 200 may be configured to use a capacitance. For example, the touch panel 200 includes driving electrodes to which a touch signal is supplied and receiving electrodes for supplying a touch signal to the touch driver. Hereinafter, any one of the driving electrode and the receiving electrode is referred to as a first touch electrode 240, and the other is referred to as a second touch electrode 220.

2 and 3, the touch panel 200 includes a base substrate 210, is disposed in a display region C of the base substrate 210, And a touch electrode unit 280 including a first touch electrode 240 and a second touch electrode 220. The touch electrode unit 280 is disposed in a non-display area A 'of the base substrate 210, And a touch line unit 290 including a first touch line 250 connected to the electrode 240 and a second touch line 230 connected to the second touch electrode 220.

The base substrate 210 may be formed of a film using synthetic resin such as polyimide (PI), or may be formed of glass.

The first touch electrode 240 and the second touch electrode 220 are formed of transparent electrodes such as indium tin oxide (ITO) and are spaced apart from each other with an insulating material therebetween.

The display area C refers to an area through which the image output from the display panel 100 passes and the non-display area A 'refers to the entire area surrounding the display area C.

The touch line unit 290 is disposed in the non-display area A 'as shown in FIGS. 2 and 3. The end 270 of the touch line unit 290 is connected to the touch driver . 2 and 3, the touch driver is not shown.

The cover glass 300 includes a black matrix 320 provided in the non-display area A 'and covering the touch line part 290.

The display device according to the present invention is constructed using an add-on method. In the add-on method, the touch panel 200 manufactured independently of the display panel 100 is attached to the upper surface of the display panel 100. In this case, the cover glass 300 is attached to the upper surface of the touch panel 200.

4 is an exemplary view for explaining a function of a touch line unit applied to a display device according to the present invention.

4, the touch line unit 290 is provided on the upper surface of the base substrate 210, and is connected to the touch electrode unit 280. The touch line unit 290 includes a metal film 291 made of opaque metal A transparent film 292 formed on the upper surface of the metal film 291 and made of a transparent material and a translucent film 293 formed on the upper surface of the transparent film 292 and made of a translucent material.

The upper surface of the base substrate 210 refers to a surface of the base substrate 210 opposite to the cover glass 300 and the lower surface of the base substrate 210 is a surface Means a surface facing the panel 100.

The opaque metal constituting the metal film 291 may be a metal such as gold, silver, copper or the like, and may be various kinds of metals having excellent conductivity.

The transparent material constituting the transparent film 292 may be a transparent electrode such as ITO, or may be a transparent inorganic film or a transparent organic film. Accordingly, the transparent material may be a transparent electrode having conductivity, or may be a transparent insulating film.

The translucent film 293 can be formed by thinly applying various kinds of metals.

The touch line unit 290 disposed in the non-display area A 'may be connected to the touch driver 240 to connect the first touch electrode 240 and the second touch electrode 220 with the touch driver. So that it is not visible to the user's eyes. To this end, interference of light is used in the present invention.

For example, a part M of the light irradiated to the translucent film 293 outside the touch line part 290 is reflected by the translucent film 293 as shown in FIG. The remaining portion N of the light passes through the semi-transparent film 293 and the transparent film 292, and is then reflected by the metal film 291.

In this case, by adjusting the thickness of the translucent film 293 and the thickness of the transparent film 292, the reflectance of light reflected from the touch line portion 290 can be adjusted. As the reflectance is lowered, The color of the visible touch line portion 290 is shown in black.

Theoretically, if the light M reflected from the translucent film 293 and the light N reflected from the metal film 291 are canceled and canceled by interference with each other, There is no visible light. Accordingly, the touch line unit 290 can be seen in black on the user's eyes.

As a result of the simulation, the thickness of the semi-transparent film 293 and the thickness of the transparent film 292 are adjusted so that the light reflected from the touch line portion 290 It was confirmed that the reflectance can be adjusted.

In Table 1, Ti (titanium) and Mo (molybdenum) refer to the translucent film 293, ITO (indium tin oxide) and IZO (indium zinc oxide) refer to the transparent film 292, The metal means the metal film 291.

rescue reflectivity(%) Structure 1 Ti (4-8 nm) / ITO (70 nm) / metal (200 nm) 6 to 8 Structure 2 Mo (4 to 7 nm) / ITO (60 nm) / metal 4.5 ~ 9.8 Structure 3 Ti (6 to 9 nm) / IZO (70 nm) / metal 8.8 to 9.0 Structure 4 Ti (15 nm) / ITO (80 nm) / metal 7.3 Structure 5 Mo (7 nm) / ITO (60 nm) / metal 4.2 Structure 6 Ti (17 nm) / IZO (80 nm) / metal 9.6

The transparent film 292 may be formed of a transparent conductive material, a transparent non-conductive material, or a transparent conductive material and a transparent non-conductive material.

The semitransparent film 293 may be formed of a metal, a dye, a pigment, or the like having a small thickness that reflects a part of light and transmits a part of light. That is, the translucent film 293 is not necessarily formed of a metal.

The transparent film 292, the translucent film 293, and the black matrix 320 may be formed by vapor deposition, coating, printing, or the like.

FIG. 5 is an exemplary view comparing the size of the non-display area of the display device according to the present invention with the size of the non-display area of the conventional display device. (a) is an exemplary view showing a conventional display device shown in Fig. 1, and (b) is an exemplary view showing a display device according to the present invention shown in Fig.

In the display device according to the present invention, as described above, the light M reflected by the semi-transparent film 293 and the light N reflected from the metal film 291 are canceled by the interference with each other, The touch line unit 290 may be seen black in the user's eyes.

Accordingly, the touch line unit 290 may be provided in an area adjacent to the display area A '.

In addition, since the touch line unit 290 is displayed in black, the touch line unit 290 may not be completely covered by the black matrix 320, as shown in (b). In this case, the interval B 'between the black matrix 320 and the display area C is larger than the interval between the touch line part 290 and the display area C. 5, there is no gap between the touch line unit 290 and the display area C, but the touch line unit 290 and the display area C may be spaced apart from each other by a predetermined distance.

Therefore, the interval B 'between the black matrix 320 and the display area C is set to be shorter than the interval B' between the touch line part and the display area C in the conventional display device shown in (a) ).

To be more specific, in the conventional display device shown in (a), the first touch line 25 and the second touch line 23 reflect light. In this case, in order to prevent the first touch line 25 and the second touch line 23 from being disposed in the display area C due to an error in the manufacturing process of the display device, The touch line 25 and the second touch line 23 should be separated from the display area C by a predetermined distance. In addition, the black matrix 32 must completely cover the first touch line 25 and the second touch line 23. Therefore, in the conventional display device shown in Fig. 6A, the non-display area A must be large.

However, in the present invention, the first touch line 250 and the second touch line 230 do not reflect light. Therefore, the first touch line 250 and the second touch line 230 may be formed in close contact with the display region C. Accordingly, the width of the non-display area A 'in the display device according to the present invention can be reduced from the width of the non-display area A in the conventional display device.

Hereinafter, various embodiments of the touch panel according to the present invention will be described with reference to Figs. 6A to 6G.

6A to 6G are various examples of the touch panel according to the present invention.

The display device according to the present invention includes a display panel 100 on which an image is output, a touch panel 200 attached to the upper surface of the display panel 100 for sensing a touch, And a cover glass 300 attached to the upper surface of the panel 200 and protecting the touch panel 200.

In this case, the touch panel 200 includes a base substrate 210, a first touch electrode 240 and a second touch electrode 240 disposed in the display region C of the base substrate 210, The first touch electrode 240 is disposed in a non-display area A 'of the base substrate 210 and includes a touch electrode unit 280 including a touch electrode 220. The first touch electrode 240 is connected to the first touch electrode 240, And a touch line unit 290 including a line 250 and a second touch line 230 connected to the second touch electrode 220.

6A, the first touch electrode 240 may be disposed on the upper surface of the base substrate 210 and the second touch electrode 220 may be disposed on the lower surface of the base substrate 210. [ As shown in FIG.

In this case, the metal film 291 is connected to the first touch electrode 240 and is connected to the first metal part 251 made of opaque metal and the second touch electrode 220, and is made of opaque metal And a second metal portion 231 made of a metal.

As described above, the opaque metal means a metal which is excellent in conductivity and opaque.

The transparent film 292 is provided on a top surface of the first metal part 251 and includes a first transparent metal part 252a made of a transparent metal and a second transparent metal part 252b formed on the upper surface of the second metal part 231, And a second transparent metal part 232a made of metal.

The first transparent metal part 252a and the second transparent metal part 232a may be made of the same material as the material constituting the first touch electrode 240, for example, ITO.

The translucent film 293 is provided on the upper surface of the first transparent metal part 252a and includes a first translucent metal part 253 made of translucent metal and a second translucent metal part 253 formed on the upper surface of the second transparent metal part 232a And a second translucent metal part 233 made of a translucent metal.

The first semi-transparent metal part 253 and the second semi-transparent metal part 233 can be formed by thinly applying an opaque metal as described above.

Even if the first touch electrode 240 and the second touch electrode 220 are disposed between the base substrate 210 and the first touch line 250 and the second touch line 230 The first touch line 250 and the second touch line 230 can be connected to one touch driver at the same time as they are disposed on the same surface of the base substrate 210. In the following description, a touch panel in which the first touch line 250 and the second touch line 230 are provided on the upper surface of the base substrate 210 will be described as an example of the present invention.

The first touch line 250 and the second touch line 230 constitute the touch line unit 290.

In this case, as described above, the second touch electrode 220 is provided on the bottom surface of the base substrate 210.

A second metal 238 made of opaque metal may be disposed on the non-display area of the lower surface, and a second transparent metal 237 made of a transparent metal may be disposed on the second metal 238 .

The second transparent metal layer 237 may be made of the same material as the second touch electrode 220, for example, ITO.

The second metal 238 or the second transparent metal 237 is electrically connected to the second metal part 237 constituting the second touch line 230 through the contact part 239 penetrating the base substrate 210. [ (231), the second transparent metal part (232a) and the second translucent metal part (233). Therefore, the second touch electrode 220 is electrically connected to the second touch line 230.

When the contact portion 239 is provided in the through hole formed in the base substrate 210, the contact portion 239 may be formed of a metal having excellent electrical conductivity. Also, considering the electrical conductivity, the second touch electrode 220 may be connected to the second metal part 231 through the contact part 239.

6B, the first touch electrode 240 may be disposed on the upper surface of the base substrate 210 and the second touch electrode 220 may be disposed on the lower surface of the base substrate 210. [ As shown in FIG.

In this case, the metal film 291 is connected to the first touch electrode 240 and is connected to the first metal part 251 made of opaque metal and the second touch electrode 220 and made of opaque metal And a second metal portion 231.

The first touch electrode 240 may be disposed on a top surface of the base substrate 210 and the second touch electrode 220 may be disposed on a bottom surface of the base substrate 210.

Further, a second translucent metal 236 made of translucent metal may be disposed in the non-display area of the lower surface, and a second metal 238 made of opaque metal may be disposed in the second translucent metal 236. [ And a second transparent metal 237 made of a transparent metal may be disposed on the second metal 238.

The second translucent metal 236, the second metal 238 or the second transparent metal 237 are electrically connected to the second touch line 230 (not shown) through a contact portion 239 penetrating the base substrate 210. [ , The second transparent metal part (232a), and the second translucent metal part (233) constituting the first metal part (231). Therefore, the second touch electrode 220 is electrically connected to the second touch line 230. The second touch electrode 220 may be connected to the second metal part 231 through the contact part 239 in consideration of electrical conductivity and the like.

6B, the first touch electrodes 240 are provided on the upper surface of the base substrate 210, and the second touch electrodes 220 are formed on the upper surface of the base substrate 210. In addition, And the second metal part 231 is connected to the second touch electrode 220 through a contact part 239 passing through the base substrate 210. [

6C, the first touch electrode 240 may be disposed on the upper surface of the base substrate 210, the second touch electrode 220 may be disposed on the lower surface of the base substrate 210, As shown in FIG.

The transparent film 292 is provided on the upper surface of the first metal part 251 and includes a first transparent insulating part 252b made of a transparent insulating material and an upper surface of the second metal part 231 And a second transparent insulating portion 232b made of a transparent insulating material.

The transparent insulating material may be composed of various kinds of transparent organic or inorganic materials. In the display panel shown in Fig. 6B, the transparent film 292 is made of a transparent metal, but in the display panel shown in Fig. 6C, the transparent film 292 is made of a transparent insulating material.

The translucent film 293 is provided on the upper surface of the first transparent insulation part 252b and includes a first translucent metal part 253 made of translucent metal and a second translucent metal part 253 formed on the upper surface of the second transparent insulation part 232b And a second translucent metal part 233 made of a translucent metal.

In this case, a second metal 238 made of opaque metal may be disposed in the non-display area of the lower surface, and the second metal 238 may be disposed on the non- Is connected to at least one of the second metal part (231), the second transparent insulating part (232b) and the second translucent metal part (233) constituting the second touch line (230) do. Therefore, the second touch electrode 220 is electrically connected to the second touch line 230. The second touch electrode 220 may be connected to the second metal part 231 through the contact part 239 in consideration of electrical conductivity and the like.

6C, the first touch electrodes 240 are formed on the upper surface of the base substrate 210, and the second touch electrodes 220 are formed on the upper surface of the base substrate 210. In addition, And the second metal part 231 is connected to the second touch electrode 220 through a contact part 239 passing through the base substrate 210. [

Referring to FIG. 6D, the first touch electrode 240 and the second touch electrode 220 are disposed on the upper surface of the base substrate 210.

The first transparent metal part 252a and the second transparent metal part 232a may be formed of the same material as the material constituting the first touch electrode 240 and the second touch electrode 220, ITO. &Lt; / RTI >

In this case, the second touch electrode 220 is provided on the upper surface of the base substrate 210, the upper surface of the second touch electrode 220 is provided with an insulating layer 260, The first touch electrode 240 is provided on the top surface of the first touch electrode 240.

The insulating layer 260 may be formed of an organic material or an inorganic material.

Referring to FIG. 6E, the first touch electrode 240 and the second touch electrode 220 are disposed on the upper surface of the base substrate 210.

However, the transparent film 292 is provided on the upper surface of the first metal part 251 and includes a first transparent insulating part made of a transparent insulating material and a transparent transparent part provided on the upper surface of the second metal part 231, And a second transparent insulating portion composed of an insulating material. In this case, the transparent insulating material may be composed of various transparent organic materials or inorganic materials.

In this case, the first touch electrode 240 is provided on the upper surface of the base substrate 210, the upper surface of the first touch electrode 240 is provided with an insulating layer 260, The second touch electrode 220 is provided on the upper surface of the second touch electrode 220. [ In the display panel shown in FIG. 6D, the second touch electrode 220 is provided on the upper surface of the base substrate 210, the insulating layer 260 is provided on the upper surface of the second touch electrode 220, The first touch electrode 240 is disposed on the upper surface of the insulating layer 260. 6E, the first touch electrode 240 is provided on the upper surface of the base substrate 210, and the insulating layer 260 is provided on the upper surface of the first touch electrode 240 And the second touch electrode 220 is provided on the upper surface of the insulating layer 260.

Referring to FIG. 6F, the first touch electrode 240 and the second touch electrode 220 are disposed on the upper surface of the base substrate 210.

The transparent film 292 is formed on the upper surface of the first metal part 251 and includes a first transparent insulating part 252b made of a transparent insulating material and a second transparent insulating part 252b formed on the upper surface of the first transparent insulating part 252b A second transparent insulating portion 232b formed on the upper surface of the second metal portion 231 and made of a transparent insulating material and a second transparent insulating portion 232b formed on the upper surface of the second metal portion 231, And a second transparent metal part 232a made of a transparent metal.

The transparent insulating material may be composed of various kinds of transparent organic or inorganic materials. The transparent metal may be made of the same material as the first touch electrode 240 and the second touch electrode 220, for example, ITO.

In more detail, in the display panel shown in FIG. 6F, the transparent film 292 is composed of two different materials. For example, the transparent film 292 may comprise a transparent insulating material and a transparent metal. In this case, as shown in FIG. 6F, the transparent metal may be provided on the upper surface of the transparent insulating material, and the transparent insulating material may be provided on the upper surface of the transparent metal.

Also, the transparent film 292 may be composed of at least three or more different transparent materials.

In this case, the first touch electrode 240 and the second touch electrode 220 are provided on the upper surface of the base substrate with an insulating film 260 interposed therebetween.

The insulating layer 260 and the second touch electrode 220 may be formed on the upper surface of the first touch electrode 240 or the insulating layer 260 may be formed on the upper surface of the second touch electrode 220, The first touch electrode 240 may be provided.

6G, the first touch electrode 240 and the second touch electrode 220 are disposed on the upper surface of the base substrate 210. Referring to FIG.

In this case, the metal film 291 includes a second metal part 231 connected to the second touch electrode 220 and made of opaque metal.

The transparent film 292 is provided on the upper surface of the second metal part 231 and includes a first transparent insulating part 252b made of a transparent insulating material and a second transparent insulating part 252b formed on the upper surface of the first transparent insulating part 252b And a first transparent metal part 252a connected to the first touch electrode 240 and made of a transparent metal.

The semi-transparent film 293 includes a first semi-transparent metal part 253 formed on the upper surface of the first transparent metal part 252a and made of a translucent metal.

A second transparent metal part 232a made of a transparent metal is provided between the base substrate 210 and the second metal part 231.

The first touch electrode 240 and the second touch electrode 220 are provided on the upper surface of the base substrate with an insulating layer 260 interposed therebetween.

6G, the second metal part 231 connected to the second touch electrode 220 performs the function of the metal film 291, and the first touch The first transparent metal part 252a connected to the electrode 240 performs the function of the transparent film 292 and the first translucent metal part 253 disposed on the upper surface of the first transparent metal part 252a ) Function as the translucent film 293.

In this case, the first metal part 251 connected to the first touch electrode 240 performs the function of the metal film 291, and the second transparent metal part 251, which is connected to the second touch electrode 220, The second translucent metal part 233 disposed on the upper surface of the second transparent metal part 232a functions as the transparent film 292 and the second translucent metal part 233 functions as the translucent film 293. [ .

The present invention described above is summarized as follows.

The present invention relates to a display device of an add-on type, which is advantageous for a narrow bezel.

In the display device according to the present invention using the add-on method, since the touch line portion (metal routing wiring region) 280 does not reflect external light and is seen in black, the touch line portion 280 is arranged in the display region of the display panel Can be placed closer together. Therefore, a panel having a small non-display area, that is, a narrow bezel panel can be manufactured.

In general, in the display device using the add-on method, the touch panel is disposed on the upper surface of the display panel, and the metal routing wiring (touch line portion) of the touch panel is covered by the black matrix of the cover glass. That is, the metal routing wiring (touch line portion) should not cover the display area of the display panel and should be covered by the black matrix of the cover glass. Therefore, the non-display area (bezel) of the conventional display device is inevitably large.

In order to solve this problem, in the present invention, the metal routing wiring (touch line portion) is configured not to reflect external light by using interference of light, in particular, extinction interference of light. Accordingly, the metal routing wiring (touch line portion) can be seen in black. Therefore, the metal routing wiring (touch line portion) can be disposed close to the non-display region of the display panel, whereby a narrow bezel can be realized.

In the embodiments described above, the black matrix 320 may be omitted.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: display panel 200: touch panel
300: cover glass

Claims

A base substrate;
A touch electrode unit arranged in a display region of the base substrate and composed of a first touch electrode and a second touch electrode insulated from each other; And
And a touch line unit disposed in a non-display area of the base substrate, the touch line unit including a first touch line connected to the first touch electrode and a second touch line connected to the second touch electrode,
The touch-
A metal film formed on the upper surface of the base substrate and connected to the touch electrode unit and made of opaque metal;
A transparent film formed on a top surface of the metal film and made of a transparent material; And
And a semi-transparent film formed on the upper surface of the transparent film and made of a translucent material,
Wherein the light reflected from the metal film and the light reflected from the translucent film cancel each other out.

The method according to claim 1,
Wherein the metal film includes a first metal portion connected to the first touch electrode and made of opaque metal and a second metal portion connected to the second touch electrode and made of opaque metal,
Wherein the transparent film includes a first transparent metal part formed on a top surface of the first metal part and made of a transparent metal and a second transparent metal part provided on a top surface of the second metal part and made of a transparent metal,
Wherein the translucent film comprises a first translucent metal portion formed on the upper surface of the first transparent metal portion and made of translucent metal and a second translucent metal portion provided on the upper surface of the second transparent metal portion, panel.

3. The method of claim 2,
The first touch electrodes are provided on the upper surface of the base substrate,
The second touch electrodes are provided on a lower surface of the base substrate,
And the second metal portion is connected to the second touch electrode through a contact portion penetrating the base substrate.

The method according to claim 1,
Wherein the metal film includes a first metal portion connected to the first touch electrode and made of opaque metal and a second metal portion connected to the second touch electrode and made of opaque metal,
Wherein the transparent film includes a first transparent insulating portion formed on a top surface of the first metal portion and made of a transparent insulating material and a second transparent insulating portion formed on a top surface of the second metal portion and made of a transparent insulating material,
Wherein the translucent film includes a first translucent metal portion formed on a top surface of the first transparent insulation portion and made of translucent metal and a second translucent metal portion provided on an upper surface of the second transparent insulation portion, panel.

The method according to claim 1,
Wherein the metal film includes a first metal portion connected to the first touch electrode and made of opaque metal and a second metal portion connected to the second touch electrode and made of opaque metal,
Wherein the transparent film includes a first transparent metal part formed on a top surface of the first metal part and made of a transparent metal and a second transparent metal part provided on a top surface of the second metal part and made of a transparent metal,
Wherein the translucent film includes a first translucent metal portion formed on a top surface of the first transparent metal portion and made of a translucent metal and a second translucent metal portion provided on an upper surface of the second transparent metal portion and made of a translucent metal,
The second touch electrode is provided on the upper surface of the base substrate,
An insulating film is provided on the upper surface of the second touch electrode,
And the first touch electrode is provided on an upper surface of the insulating film.

The method according to claim 1,
Wherein the metal film includes a first metal portion connected to the first touch electrode and made of opaque metal and a second metal portion connected to the second touch electrode and made of opaque metal,
Wherein the transparent film includes a first transparent metal part formed on a top surface of the first metal part and made of a transparent metal and a second transparent metal part provided on a top surface of the second metal part and made of a transparent metal,
Wherein the translucent film includes a first translucent metal portion formed on a top surface of the first transparent metal portion and made of a translucent metal and a second translucent metal portion provided on an upper surface of the second transparent metal portion and made of a translucent metal,
The first touch electrode is provided on the upper surface of the base substrate,
Wherein an insulating film is provided on an upper end surface of the first touch electrode,
And the second touch electrode is provided on an upper surface of the insulating film.

The method according to claim 1,
Wherein the metal film includes a first metal portion connected to the first touch electrode and made of opaque metal and a second metal portion connected to the second touch electrode and made of opaque metal,
Wherein the transparent film comprises a first transparent insulating portion formed on a top surface of the first metal portion and made of a transparent insulating material, a first transparent metal portion formed on a top surface of the first transparent insulating portion and made of a transparent metal, And a second transparent metal part provided on the upper surface of the second transparent insulating part and composed of a transparent metal,
Wherein the translucent film includes a first translucent metal portion formed on a top surface of the first transparent metal portion and made of a translucent metal and a second translucent metal portion provided on an upper surface of the second transparent metal portion and made of translucent metal,
Wherein the first touch electrode and the second touch electrode are provided on an upper surface of the base substrate with an insulating film interposed therebetween.

The method according to claim 1,
Wherein the metal film includes a second metal portion connected to the second touch electrode and made of opaque metal,
The transparent film may include a first transparent insulating portion formed on a top surface of the second metal portion and made of a transparent insulating material and a second transparent insulating portion provided on an upper surface of the first transparent insulating portion, A first transparent metal portion,
Wherein the translucent film includes a first translucent metal portion formed on a top surface of the first transparent metal portion and composed of a translucent metal,
A second transparent metal part made of a transparent metal is provided between the base substrate and the second metal part,
Wherein the first touch electrode and the second touch electrode are provided on an upper surface of the base substrate with an insulating film interposed therebetween.

A display panel for outputting an image;
A touch panel attached to an upper surface of the display panel and sensing a touch; And
And a cover glass attached to an upper surface of the touch panel to protect the touch panel,
The touch panel includes:
A base substrate;
A touch electrode unit arranged in a display region of the base substrate and composed of a first touch electrode and a second touch electrode insulated from each other; And
And a touch line unit disposed in a non-display area of the base substrate, the touch line unit including a first touch line connected to the first touch electrode and a second touch line connected to the second touch electrode,
The touch-
A metal film formed on the upper surface of the base substrate and connected to the touch electrode unit and made of opaque metal;
A transparent film formed on a top surface of the metal film and made of a transparent material; And
And a semi-transparent film formed on the upper surface of the transparent film and made of a translucent material,
The light reflected from the metal film and the light reflected from the translucent film cancel each other out,
Wherein the cover glass includes a black matrix provided in the non-display area and covering the touch line part.

10. The method of claim 9,
Wherein an interval between the black matrix and the display region is larger than an interval between the touch line portion and the display region.

A display panel for outputting an image;
A touch panel attached to an upper surface of the display panel and sensing a touch; And
And a cover glass attached to an upper surface of the touch panel to protect the touch panel,
The touch panel includes:
A base substrate;
A touch electrode unit arranged in a display region of the base substrate and composed of a first touch electrode and a second touch electrode insulated from each other; And
And a touch line unit disposed in a non-display area of the base substrate, the touch line unit including a first touch line connected to the first touch electrode and a second touch line connected to the second touch electrode,
The touch-
A metal film formed on the upper surface of the base substrate and connected to the touch electrode unit and made of opaque metal;
A transparent film formed on a top surface of the metal film and made of a transparent material; And
And a semi-transparent film formed on the upper surface of the transparent film and made of a translucent material,
Wherein the light reflected from the metal film and the light reflected from the semitransparent film cancel each other out.