KR101615528B1 - Transparency Flexible Electrode with Complex Structure - Google Patents

Abstract

The present invention relates to a touch panel and a touch panel which require a high transmittance, flexibility, and stretchability by applying various composite structures such as a mesh, a honeycomb, and an atypical to a transparent flexible electrode. To a transparent flexible electrode having a complex structure capable of maximizing the performance of a panel.
The present invention relates to a transparent flexible electrode having a complex structure of a touch panel or a display device, which comprises a glass and a film 110 for optical and a glass and a glass And a cover glass film 120 formed on the touch panel or the display device and having a transmitting electrode 130 and a receiving electrode 140 formed in a light emitting region of the touch panel or the display device, And a bezel electrode 150 formed on the same layer as the receiving electrode 140 and formed in the bezel region on both sides of the emitting region, wherein the transmitting electrode 130 and the receiving electrode 140 And the bezel electrode 150 are formed of transparent flexible electrodes.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transparent flexible electrode having a complex structure,

The present invention relates to a transparent flexible electrode, and more particularly, to a transparent flexible electrode which is applied to a transparent flexible electrode in a variety of complex structures such as a mesh, a honeycomb, and an atypical to obtain a transparent flexible electrode having a high transmittance, And more particularly to a transparent flexible electrode having a complex structure capable of maximizing the performance of a touch panel or a display panel that requires stress.

With the development of computers using digital technology, auxiliary devices of computers are being developed together. Personal computers, portable transmission devices, and other personal information processing devices use various input devices such as a keyboard and a mouse And performs text and graphics processing.

However, as the use of computers is gradually increasing due to the rapid progress of the information society, there is a problem that it is difficult to efficiently operate a product by using only a keyboard and a mouse which are currently playing an input device. Therefore, there is an increasing need for a device that is simple and less error-prone, and that allows anyone to easily input information.

In addition, the technology related to the input device is shifting beyond the level that satisfies the general functions, such as high reliability, durability, innovation, design and processing related technology, etc. In order to achieve this purpose, As a possible input device, a touch screen has been developed.

The touch panel is provided on the display surface of a flat display device such as an electronic notebook, a liquid crystal display device (LCD), a plasma display panel (PDP), or an el (electroluminescence) and an image display device such as a CRT (Cathode Ray Tube) And is a tool used to allow the user to select desired information while viewing the image display device.

Types of touch panels include resistive type, capacitive type, electro-magnetic type, SAW (Surface Acoustic Wave Type) and Infrared type. .

These various types of touch panels are employed in electronic products in consideration of problems of signal amplification, differences in resolution, difficulty in design and processing technology, optical characteristics, electrical characteristics, mechanical characteristics, environmental characteristics, input characteristics, durability and economical efficiency Currently, the most widely used methods are resistive touch panels and capacitive touch panels.

As an example of such a touch panel, research for reducing the visibility of an electrode pattern of a transparent conductor as described in the patent literature has been continued.

However, in order to realize a low resistance in the conventional touch panel, it is necessary to improve the visibility of the metal electrode pattern by forming an electrode pattern formed of a transparent conductor with an opaque metal material.

The shape of the conventional bezel electrode and the auxiliary electrode was in the order of 40 ~ 60 pitch (Line / Space = 20 / 20um, 30um / 30um) due to limitations of resistance and fine pattern.

This narrows the active area of the touch and display screen, and has a disadvantage in that it causes a large number of defect rates in the formation of fine pitch.

Technological efforts have been made to improve this, such as no-bezel (bezel) and narrow bezel (narrow bezel).

Hereinafter, an electrode of a touch panel or a display device according to the related art will be described with reference to the accompanying drawings.

FIG. 1 is a view for explaining electrodes of a touch panel or a display device according to the related art, and FIG. 2 is a picture for explaining electrodes of a touch panel or a display device according to the related art.

1 and 2, an electrode of a touch panel or a display device according to the related art has an optical glass and a film layer (Glass & Film) 10 formed at a lower portion thereof, Cover glass & film) 20, and the transmitting electrode 30 and the receiving electrode 40 are formed in different layers therebetween. At this time, the transmitting electrode 30 and the receiving electrode 40 use a transparent electrode, and an ITO electrode is used. However, since the ITO electrode has a high resistance, it is difficult to apply a narrow (fine) circuit design. At this time, a center portion where the transmitting electrode 30 and the receiving electrode 40 are formed is a touch panel and a display light emitting region, and both sides of the center portion are an auxiliary electrode region. A bezel electrode 50 is formed in the auxiliary electrode region.

However, as described above, the ITO electrode, which is a transparent electrode, is used as the transmitting electrode and the receiving electrode, and the ITO electrode is also used as the auxiliary electrode. Since the ITO electrode has a high resistance, a narrow (fine) It is difficult to apply it to a product which is light and simple.

Accordingly, the present invention has been made to solve the above problems and disadvantages of the prior art, and it is an object of the present invention to provide a transparent flexible electrode having various composite structure shapes such as a mesh, a honeycomb, and an atypical The present invention provides a transparent flexible electrode having a complex structure capable of maximizing the performance of a touch panel and a display panel that require high transmittance, flexibility, and stretchability.

In order to accomplish the above object, a transparent flexible electrode having a complex structure according to the present invention is a transparent flexible electrode having a complex structure of a touch panel or a display device. The transparent flexible electrode includes a glass & And a cover glass film 120 formed with a predetermined gap from the optical glass film layer 110. The transmission electrode formed in the light emitting area of the touch panel or the display device And a bezel electrode 150 formed on the same layer as the receiving electrode 140 and the transmitting electrode 130 and the receiving electrode 140 and formed in the bezel region on both sides of the emitting region The transmitting electrode 130, the receiving electrode 140, and the bezel electrode 150 are transparent flexible electrodes.

Here, the transparent flexible electrode is preferably used as an auxiliary electrode.

The transparent flexible electrode includes a substrate 210 and an optical design layer 220 formed on the substrate 210 to reduce the reflectance of the metal electrode 240, A buffer layer 230 formed on the optical design layer 220 and including a base metal for enhancing adhesion between the base layer 210 and the metal electrode 240, A special alloy layer 250 formed on the metal electrode layer 240 and formed of a metal alloy for adjusting the chemical resistance and electrical characteristics of the metal electrode layer 240, And an inorganic or organic hybrid nano thin film structure including a barrier layer 260 for preventing moisture and corrosion.

Meanwhile, the transparent flexible electrode is preferably formed in a mesh structure or a honeycomb structure having a network structure.

In order to ensure visibility, the transparent flexible electrode, which is a hybrid organic / inorganic hybrid structure, has a shape at an angle of 15 degrees to 75 degrees. The space between the line and the line width is 1: 100 to 500 Or less.

The metal electrode layer 240 is formed of one of silver (Ag), copper (Cu), chromium (Cr) and aluminum (Al), and the special alloy layer 250 is formed of Ag, (Cr), and aluminum (Al).

Meanwhile, the substrate layer 210 is preferably formed of a flexible polymer film of one of PET, PI, PC, PMMA, and PES.

The transparent flexible electrode is preferably formed in a fabric structure.

The present invention has the following effects.

First, in transparent and flexible touch panels and display panels, transparent flexible electrodes can ensure reliability of visibility and flexible circuits.

Secondly, when a transparent flexible electrode having various multi-wirings as compared with the conventional electrode pattern made of one single wire is implemented in a narrow bezel shape to be gradually and finely realized, a particularly stable yield can be secured. In other words, in the form of a composite structure, even if one fine wiring is broken, the remaining connected circuits can be connected to compensate for the breakage of the fine pattern.

Third, the complex structure such as mesh and honeycomb structure can be used to improve the flow and permeability of chemicals used in fine patterns such as etching solution and exfoliation solution, thereby enabling more precise wiring patterns. .

1 is a view for explaining an electrode of a touch panel or a display device according to the related art,
2 is a photograph illustrating electrodes of a touch panel or a display device according to the related art.
3 is a conceptual illustration of a transparent flexible electrode having a complex structure of a touch panel or a display device according to the present invention.
4 is a view for explaining a transparent flexible electrode having a complex structure of a touch panel or a display device according to the first embodiment of the present invention.
5 is a view for explaining a transparent flexible electrode having a complex structure of a touch panel or a display device according to a second embodiment of the present invention.
FIG. 6 is a view for explaining a design mode of a transparent flexible electrode having a complex structure of a touch panel or a display device according to a second embodiment of the present invention shown in FIG.
7 is a photograph for explaining a transparent flexible electrode having a complex structure of a touch panel or a display device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In addition, although the term used in the present invention is selected as a general term that is widely used at present, there are some terms selected arbitrarily by the applicant in a specific case. In this case, since the meaning is described in detail in the description of the relevant invention, It is to be understood that the present invention should be grasped as a meaning of a term that is not a name of the present invention. Further, in describing the embodiments, descriptions of technical contents which are well known in the technical field to which the present invention belongs and which are not directly related to the present invention will be omitted. This is for the sake of clarity of the present invention without omitting the unnecessary explanation.

3 is a conceptual illustration of a transparent flexible electrode having a complex structure of a touch panel or a display device according to the present invention.

As shown in FIG. 3, the transparent flexible electrode having a complex structure of the touch panel or the display device according to the present invention has an optical glass film layer (Glass & Film) 110 formed at the lower part thereof, And a touch panel and a display region between the optical glass film layer 110 and the cover glass and film 120 are formed with a transmitting electrode 130 The reception electrodes 140 are formed at the same interval as the transmission electrodes 130 and the reception electrodes 140 are formed at the same interval as the transmission electrodes 130 and the reception electrodes 140, An auxiliary electrode or bezel electrode 150 is formed on the same layer. In this case, the transmission electrode 130, the reception electrode 140, and the auxiliary electrode or bezel electrode 150 use an organic or inorganic hybrid structure. In this organic / inorganic composite structure, It is resistive and is advantageous for narrow (fine) circuit design.

4 is a view for explaining a transparent flexible electrode having a complex structure of a touch panel or a display device according to the first embodiment of the present invention.

As shown in FIG. 4, the transparent flexible electrode having the composite structure of the touch panel or the display device according to the first embodiment of the present invention includes PET, PI, PC, PMMA An optical design layer 220 for reducing the reflectivity of the metal electrode layer 240 is formed on the base layer 210 and an optical design layer 220 is formed on the base layer 210. In addition, A buffer layer 230 including a base metal for enhancing adhesion between the base layer 210 and the metal electrode layer 240 is formed on the design layer 220. A metal electrode layer 240 is formed on the buffer layer 230. On the metal electrode layer 240, a special alloy layer 250 made of a metal alloy (alloy) for adjusting the chemical resistance and electric characteristics of the pure metal electrode is formed. On the special alloy layer 250, And a barrier layer 260 for preventing corrosion is formed to have a shape of an organic or inorganic hybrid nano thin film structure. At this time, it is preferable that the transparent flexible electrode according to the first embodiment of the present invention is formed in a mesh shape of a network structure. That is, the optical design layer 220, the buffer layer 230, the metal electrode layer 240, the special alloy layer 250, and the barrier layer 260 are formed into a mesh shape.

5 is a view for explaining a transparent flexible electrode having a complex structure of a touch panel or a display device according to a second embodiment of the present invention.

As shown in FIG. 5, the transparent flexible electrode having the complex structure of the touch panel or the display device according to the second embodiment of the present invention includes PET, PI, PC, PMMA An optical design layer 220 for reducing the reflectivity of the metal electrode layer 240 is formed on the base layer 210 and an optical design layer 220 is formed on the base layer 210. In addition, A buffer layer 230 including a base metal for enhancing adhesion between the base layer 210 and the metal electrode layer 240 is formed on the design layer 220. A metal electrode layer 240 is formed on the buffer layer 230. On the metal electrode layer 240, a special alloy layer 250 made of a metal alloy (alloy) for adjusting the chemical resistance and electric characteristics of the pure metal electrode is formed. On the special alloy layer 250, And a barrier layer 260 for preventing corrosion is formed to have a shape of an organic or inorganic hybrid nano thin film structure. The transparent flexible electrode according to the second embodiment of the present invention is preferably formed in a honeycomb structure. That is, the optical design layer 220, the buffer layer 230, the metal electrode layer 240, the special alloy layer 250, and the barrier layer 260 are formed in a honeycomb structure.

The metal electrode layer 240 of the transparent flexible electrode according to the first and second embodiments of the present invention is formed of one of silver (Ag), copper (Cu), chromium (Cr) and aluminum (Al) 250 is made of an alloy of silver (Ag), copper (Cu), chrome (Cr), and aluminum (Al) and is formed of a composite layer of an oxide organic material or the like.

FIG. 6 is a view for explaining a design mode of a transparent flexible electrode having a complex structure of a touch panel or a display device according to a second embodiment of the present invention shown in FIG.

The design of the transparent flexible electrode having the complex structure of the touch panel or the display device according to the second embodiment of the present invention shown in FIG. 5 is as shown in FIG. 6. The transparent flexible electrode according to the present invention, which is a hybrid organic structure, The electrode has a shape of 15 to 75 degrees except 0 degree and 90 degree in order to ensure visibility, and the space between line and line width can be adjusted within 1: 100 ~ 500 ratio Have a design structure. For example, it has a morphology that has a mesh shape or a honeycombed shape. One of the most important morphological features is that a line is connected to adjacent lines with a certain space in various radial shapes except horizontal and vertical angles. Such a transparent flexible electrode can design the number of a plurality of adjacent lines by one line according to circuit resistance and process factors.

In such a case, since it can be designed in a complex structure, it can be designed and optimized for a desired resistance, so that it can be formed with a relatively low resistance as compared with the conventional electrode.

In other words, the organic / inorganic composite structure of the multilayer structure can be locally patterned / coated on the electrode formation portion to form a shape similar to a three-dimensional structure, that is, a fabric structure. Accordingly, It is a structure favorable for touch panels and display panels that require flexibility and stretch when applied to electronic devices and stretchable electronic devices.

7 is a photograph for explaining a transparent flexible electrode having a complex structure of a touch panel or a display device according to the present invention.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it should be understood that various changes and modifications will be apparent to those skilled in the art. It is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which fall within the scope of equivalence by alteration, substitution, substitution, Range. In addition, it should be clarified that some configurations of the drawings are intended to explain the configuration more clearly and are provided in an exaggerated or reduced size than the actual configuration.

110: optical glass film layer 120: cover glass film layer
130: transmitting electrode 140: receiving electrode
150: Bezel electrode
210: base layer 220: optical design layer
230: buffer layer 240: metal electrode layer
250: special alloy layer 260: barrier layer

Claims (8)

In the transparent flexible electrode,
An optical glass film layer 110 formed on the bottom;
A cover glass film layer 120 formed at a predetermined interval from the optical glass film layer 110; And
And a transmitting electrode 130 and a receiving electrode 140 formed between the optical glass film layer 110 and the cover glass film layer 120 and provided in a light emitting region of a touch panel or a display device, ;
The transmitting electrode 130 and the receiving electrode 140 are connected to each other,
A base layer (Film) 210;
An optical design layer 220 formed on the base layer 210 to reduce the reflectance of the metal electrode layer 240;
A buffer layer 230 formed on the optical design layer 220 and including a base metal for enhancing adhesion between the base layer 210 and the metal electrode layer 240;
The metal electrode layer 240 formed on the buffer layer 230;
A special alloy layer 250 formed on the metal electrode layer 240 and made of a metal alloy for adjusting the chemical resistance and electrical characteristics of the metal electrode layer 240; And
And a barrier layer (260) for preventing upper moisture and corrosion.
The method according to claim 1,
Further comprising a bezel electrode formed in a bezel region provided on both sides of the light emitting region of the touch panel or the display device,
Wherein the bezel electrode is configured the same as the transmission electrode and the reception electrode.
The method according to claim 1,
Wherein the transmitting electrode and the receiving electrode are formed on the same layer.
The method according to claim 1,
Wherein the transmission electrode and the reception electrode are formed in a meshed shape, a honeycomb structure, or a woven structure of a mesh structure.
The method according to claim 1,
The transmission electrode and the reception electrode have a shape of 15 degrees to 75 degrees in order to ensure visibility and a space between a line and a line width can be adjusted within a range of 1: Transparent flexible electrode.
The method according to claim 1,
The metal electrode layer 240 is formed of one of silver (Ag), copper (Cu), chromium (Cr), and aluminum (Al)
Wherein the special alloy layer 250 is formed of an alloy of silver (Ag), copper (Cu), chromium (Cr), and aluminum (Al).
The method according to claim 1,
Wherein the substrate layer 210 is formed of a flexible polymer film selected from the group consisting of PET, PI, PC, PMMA, and PES.
3. The method of claim 2,
Wherein the bezel electrode is used as an auxiliary electrode.

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