KR102311976B1 - Touch display apparatus - Google Patents

Abstract

A touch-sensitive display device having a color filter and a black matrix according to an embodiment of the present invention is provided. A touch electrode is divided into segments on the color filter, and the touch electrode is connected to a metal electrode formed on the black matrix. In addition, a touch-sensitive display device is provided by including an insulating film and a connection electrode on the metal electrode. Flexible stress can be distributed using the segmented touch electrode according to an embodiment of the present invention, and power consumption related to touch sensing can be reduced by using the metal electrode.

Description

Touch-sensitive display device {TOUCH DISPLAY APPARATUS}

The present invention relates to a touch-sensitive display device, and more particularly, to provide a touch-sensitive device capable of minimizing cracks in touch electrodes that may occur in a flexible display and reducing the amount of power consumed by a touch function.

A touch-sensitive display device is a device that detects one or more touches on a user's display screen and user's touch-related motions related thereto. It is widely used in large display devices.

A touch-sensitive display device may be classified into a resistive type, a capacitive type, an infrared type (IR) type according to an operation method, and the like, and the capacitive type is generally used in recent years.

The capacitive touch-sensitive display device basically uses a transparent conductive material such as ITO (Indium Tin Oxide) and IZO (Indium Zinc Oxice) to have a first electrode extending in a first direction and a first electrode extending in a second direction. It includes a second electrode, wherein the capacitance of the first electrode and the second electrode is changed due to physical contact with the user's display device, and the touch position of the user is detected through the change in capacitance of the first electrode and the second electrode. will do However, a transparent conductive material such as ITO used as a touch electrode has a relatively high surface resistance compared to a general metal material, and thus the inter-electrode resistance increases during the manufacture of a touch-sensitive display device having precise performance and a large area, so that the detection of the touch position There is a problem that the sensitivity is lowered. In addition, a transparent conductive material such as ITO has a problem in implementing a flexible display because it is vulnerable to a bending characteristic.

[Related technical literature]

1. Color filter array substrate, liquid crystal display including same, and manufacturing method thereof (Patent Application No. 10-2010-0028349)

ITO, which is one of transparent conductive materials used as a touch electrode on the front surface of a touch screen device, has a higher resistance and lower flexibility than a metal material. Therefore, when a touch screen device using ITO as a material of a touch electrode is applied to a flexible display device, cracks may occur in ITO, which may cause defects. Also, the display device is enlarged due to high resistance compared to metal materials. The more power consumption increases, the lower the sensitivity to touch, the slower the response speed.

Accordingly, an object of the present invention is to provide a touch-sensitive display device applicable to a large-sized touch-sensitive display device by reducing power consumption by touch sensing.

In addition, another problem to be solved by the present invention is that a conductive material such as ITO used as a touch electrode easily cracks due to bending, which can cause a defect in the touch sensing device, so a structure to reduce cracks in the touch electrode to provide a touch-sensitive display device of

The problems to be solved according to an embodiment of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A flexible display including a plurality of pixels defined by a color filter and a black matrix according to an embodiment of the present invention is provided. A color filter is formed on the substrate, and a black matrix in the form of a mesh is formed on the color filter. A transparent touch electrode is formed on the color filter. Since the transparent touch electrode is divided into a plurality of segments, stress caused by the flexible is dispersed, and cracks in the transparent touch electrode due to the flexible stress can be minimized.

A flexible display including a plurality of pixels defined by a color filter and a black matrix according to another embodiment of the present invention is provided. A color filter is formed on the substrate, and a black matrix in the form of a mesh is formed on the color filter. A first metal electrode is formed on the black matrix in a first direction, and a second metal electrode is formed on the black matrix so as not to be electrically connected to the first metal electrode at an intersection point in the second direction. The touch electrode is divided into a plurality of segments on the color filter and the size thereof is formed to correspond to a size proportional to an integer multiple of the pixel size. The first metal electrode and the second metal electrode and the touch electrode segment divided into a plurality of segments are respectively connected. The second metal electrode is formed separately from the first metal electrode at the intersection point, and in order to connect the second metal electrode, an insulating film having a plurality of contact holes on the second metal electrode and the second metal electrode are connected through a plurality of contact holes on the insulating film. A connection electrode is formed. The first metal electrode and the second metal electrode extend to the pad part, and the first metal electrode and the second metal electrode formed on the pad part can reduce oxidation due to external exposure by the touch electrode.

A flexible display including a plurality of pixels defined by a color filter and a black matrix according to another embodiment of the present invention is provided. A color filter is formed on the substrate, and a black matrix in the form of a mesh is formed on the color filter. A first metal electrode is formed on the black matrix in a first direction, and a second metal electrode is formed on the black matrix so as not to be connected at an intersection with the first metal electrode in the second direction. An insulating layer having a plurality of contact holes is formed on the first metal electrode and the second metal electrode. A touch electrode is formed on the insulating layer by dividing the size corresponding to an integer multiple of a pixel size, and the touch electrode is connected to the first metal electrode or the second metal electrode through a contact hole of the insulating layer. One of the segments of the touch electrode extends from the intersection of the first metal electrode and the second metal electrode and is connected to the second metal electrode. Therefore, the second metal electrode is connected at the intersection with the first metal electrode by the touch electrode. The first metal electrode and the second metal electrode extend to the pad part, and the first metal electrode and the second metal electrode formed on the pad part have an insulating film that reduces oxidation due to external exposure. connected to the electrode.

According to an embodiment of the present invention, stress can be distributed by patterning the touch electrode into segments.

In addition, by using the metal electrode, it is possible to realize high touch sensitivity even at a low voltage, thereby reducing power consumption.

In addition, oxidation of the metal electrode of the pad part is minimized by the insulating film or the touch electrode.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

Since the content of the invention described in the problems to be solved above, the means for solving the problems, and the effects do not specify the essential characteristics of the claims, the scope of the claims is not limited by the matters described in the content of the invention.

1 is a schematic exploded perspective view of a touch-sensitive display device in which stress is distributed by dividing a touch electrode into segments according to an embodiment of the present invention.
FIG. 2 is a schematic plan view of the touch-sensitive display device shown in FIG. 1 .
3 is a schematic cross-sectional view of a touch-sensitive display device in which a second touch electrode is connected using a connection electrode according to an embodiment of the present invention.
4A to 4C are schematic cross-sectional views illustrating a connection relationship between the first and second touch electrodes and the first and second metal electrodes according to an embodiment of the present invention.
5 is a schematic plan view of a touch-sensitive display device in which a touch electrode is connected using a metal electrode according to an embodiment of the present invention.
6A to 6B are schematic cross-sectional views illustrating a connection relationship between the first and second metal electrodes and the first and second touch electrodes according to an embodiment of the present invention.
7A to 7G are cross-sectional views illustrating a method of manufacturing a touch-sensitive display device according to an embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and technically various interlocking and driving are possible, as will be fully understood by those skilled in the art, and each embodiment may be independently implemented with respect to each other, It may be possible to implement together in a related relationship.

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

1 is a schematic exploded perspective view illustrating a touch-sensitive display device in which a touch electrode is divided into a plurality of segments according to an embodiment of the present invention, and FIG. 2 is a touch-sensitive display in which the touch electrodes are connected using a metal electrode. A schematic plan view of the device.

As shown, the touch-sensitive display apparatus 100 includes a substrate 110 , a color filter 120 , a black matrix 130 , a metal electrode 140 , a touch electrode 150 , an insulating film 160 , and a connection electrode 170 . ) is included. In FIG. 1 , for convenience of explanation, the thickness and width of the black matrix 130 , the first touch electrode 151 , the second touch electrode 152 , and the connection electrode 170 may be variously changed according to the design change of the designer. can (It has been omitted and shown.)

1 and 2 , a color filter 120 is formed on a substrate 110 , a black matrix 130 is formed on the color filter 120 in a mesh pattern, and a black matrix 130 is formed on the black matrix 130 . The first metal electrode 141 and the second metal electrode 142 are formed on the same plane.

In addition, the second metal electrode 142 is disconnected at the intersection of the first metal electrode 141 and the second metal electrode 142 .

In addition, the first touch electrode 151 and the second touch electrode are formed on the same plane on the color filter 120 . The sizes of the first touch electrode 151 and the second touch electrode 152 correspond to a sub-pixel or an integer multiple of a pixel pitch. An insulating film 160 having a plurality of openings 161 is formed on the first touch electrode 141 and the second touch electrode 152 , and a connection electrode 170 is formed on the insulating film 160 to form the insulating film 160 . The second metal electrode 142 is connected to the second metal electrode 142 through the plurality of openings 161 of the .

Although not shown in FIG. 2 , the first metal electrode 141 , the second metal electrode 142 , and the connection electrode 170 are formed to overlap the black matrix 130 so as not to affect the visibility from the user's point of view and It is formed so that the aperture ratio may not be affected.

3 is a schematic cross-sectional view of a touch-sensitive display device in which a second touch electrode is connected using a connection electrode according to an embodiment of the present invention. Referring to FIG. 3 , the touch sensitive display device 100 includes a substrate 110 , a barrier layer 111 , a color filter 120 , a black matrix 130 , a first metal electrode 141 , and a second metal electrode 142 . ), a first touch electrode 151 , a second touch electrode 152 , an insulating film 160 , and a connection electrode 170 . The connection electrode 170 is connected to the second touch electrode 152 through the contact hole 161 of the insulating film 160 , and the second metal electrode 142 is electrically connected to the first metal electrode 141 at the intersection. make it possible

The first metal electrode 141 and the second metal electrode 142 extend to the pad part 112 and are formed to transmit a touch sensing signal to the circuit part.

(1) The metal electrode 140 extended to the pad part 112 and exposed to the outside may be covered by the touch electrode 150 to reduce oxidation.

(2) And, since the touch electrode 150 covers the metal electrode 140 extended to the pad part 112 and exposed to the outside, oxidation of the metal electrode 140 can be reduced.

4A to 4C are schematic cross-sectional views illustrating a connection relationship between the first and second touch electrodes and the first and second metal electrodes according to an embodiment of the present invention.

Referring to FIG. 4A , the first metal electrode 141 and the second metal electrode 142 are formed on the black matrix 130 , and the first touch electrode 151 and the second touch electrode 152 are formed of a first metal. The electrode 141 and the second metal electrode 142 are respectively overlapped and connected to each other.

Referring to FIG. 4B , the first touch electrode 151 and the second touch electrode 152 are formed to partially overlap the black matrix 130 , and the first metal electrode 141 and the second metal electrode 142 are It overlaps the black matrix 130 and is formed on the first touch electrode 151 and the second touch electrode 152 .

4C shows a cross section of another connection relationship between the touch electrode 150 and the metal electrode 140 in an embodiment of the present invention. The metal electrode 140 is formed on the black matrix 130 , and the touch electrode 150 and the metal electrode 140 are formed on one side of the touch electrode 150 and one side of the metal electrode 140 on the black matrix 130 . sides are connected.

5 is a schematic plan view of a touch-sensitive display device in which a touch electrode is connected using a metal electrode according to an embodiment of the present invention.

As illustrated, the touch-sensitive display apparatus 200 includes a touch electrode 250 , a metal electrode 240 , and a connection electrode 270 for touch sensing. In FIG. 5 , for convenience of explanation, a first gold electrode 241 , a second metal electrode 242 , a first touch electrode 251 , a second touch electrode 252 , a black matrix 230 , and a color filter 220 . ) thickness and width can be variously changed according to the design change of the designer.

Referring to FIG. 5 , the second metal electrode 242 is short-circuited at an intersection with the first metal electrode 241 , and the short-circuited second metal electrode 242 is connected to each other by a connection electrode 270 .

The first metal electrode 241 and the second metal electrode 242 are formed in a mesh type. The connection electrode 270 is formed by the extension of the second touch electrode 252 and is formed of the same material as the first touch electrode 251 and the second touch electrode 252 , thereby enabling touch sensing.

6A to 6B are schematic cross-sectional views illustrating a connection relationship between a first metal electrode and a second metal electrode and a touch electrode according to an embodiment of the present invention.

Referring to FIG. 6A , a black matrix 230 is formed on the color filter 220 , and a first metal electrode 241 and a second metal electrode 242 are formed on the black matrix 230 . An insulating layer 260 having a plurality of contact holes 261 formed on the color filter 230 , the first metal electrode 241 , and the second metal electrode 242 is formed.

In addition, a first touch electrode 251 and a second touch electrode 252 are formed on the insulating layer 260 , and the first and second metal electrodes 241 and 242 are formed through a contact hole 261 . The first touch electrode 251 and the second touch electrode 252 are respectively connected.

Referring to FIG. 6B , in order to connect the disconnected second metal electrode 242 at the intersection with the first metal electrode 241 , the connection electrode 270 is formed to extend from the second touch electrode 252 , and the disconnection The second metal electrodes 242 are connected to each other.

The connection electrode 270 is formed of the same material as the second touch electrode 252 , and thus has the effect of performing touch sensing. 7A to 7G are flowcharts for explaining a method of manufacturing a touch-sensitive display device according to an embodiment of the present invention.

First, a barrier layer 111 is formed on the substrate 110 .

Next, the color filter 120 is formed, and the black matrix 120 is formed. A first metal electrode 141 and a second metal electrode 142 are formed on the black matrix 120 .

At this time, the black matrix 120, the first metal electrode 141, and the second metal electrode 142 are formed to extend to the pad part.

Next, the first touch electrode 151 and the second touch electrode 152 are formed on the color filter 120 to be connected to the first metal electrode 141 and the second metal electrode 142 . The connection relationship between the first and second touch electrodes 151 and 152 and the first and second metal electrodes 141 and 142 is formed in the structure shown in FIGS. 4B to 4C according to the deposition order. can be Preferably, the first metal electrode 141 and the second metal electrode 142 are formed with reference to FIG. 4A , and the first touch electrode 151 and the second touch electrode 152 are formed to form the first electrode extending to the pad part. The metal electrode 141 and the second metal electrode 142 are covered with the first touch electrode 151 and the second touch electrode 152 to prevent oxidation of the first metal electrode 141 and the second metal electrode 142 . formed to be minimized.

Next, the insulating layer 160 is formed on the first touch electrode 151 and the second touch electrode 152 , and a plurality of contact holes 161 are formed.

Next, the connection electrode 170 is formed on the insulating film 160 . At this time, the connection electrode 170 is connected to the second touch electrode 151 through the plurality of contact holes 161 .

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100, 200, 300 display devices
110, 210, 310 substrate
111, 211, 311 barrier layer
112, 212 pad part
120, 220, 320 color filter
130, 230, 330 Black Matrix
140, 240, 340 metal electrode
141, 241, 341 first metal electrode
142, 242, 242 second metal electrode
150, 250, 350 touch electrode
151, 251, 351 first touch electrode
152, 252, 352 second touch electrode
160, 260, 360 insulating film
161, 261, 361 contact holes
170, 270, 370 connecting electrode

Claims (20)

a flexible substrate including a plurality of pixels defined by a color filter and a black matrix;
a transparent touch electrode formed on the flexible substrate, the touch electrode comprising: the touch electrode divided by an integer multiple of a size of the pixel in order to dissipate a stress applied to the touch electrode;
a metal electrode formed on the black matrix to connect the divided touch electrodes; and
an insulating film disposed on the metal electrode;
The metal electrode extends to the pad part,
The metal electrode formed on the pad portion to reduce oxidation of the metal electrode formed on the pad portion is covered by the touch electrode, a touch-sensitive display device. delete delete delete A touch-sensitive display device comprising a color filter and a black matrix formed on a substrate, the touch-sensitive display device comprising:
a first metal electrode formed on the black matrix in a first direction;
a plurality of first touch electrodes formed in segments on the color filter and connected to the first metal electrode;
a second metal electrode formed on the black matrix in a second direction and separated at an intersection with the first metal electrode;
a plurality of second touch electrodes formed in segments on the color filter and connected to the second metal electrode;
an insulating film having a plurality of contact holes on the second metal electrode; and
and a connection electrode formed to electrically connect the separated second metal electrode through the contact hole. 6. The method of claim 5,
The connection electrode is characterized in that connected to at least one of the second metal electrode and the second touch electrode, a touch-sensitive display device. 6. The method of claim 5,
The substrate comprises a barrier layer in which organic layers and inorganic layers are alternately stacked, the touch-sensitive display device. 6. The method of claim 5,
A size of the first touch electrode and the size of the second touch electrode corresponds to an integer multiple of a size of a sub-pixel. 6. The method of claim 5,
The first metal electrode, the second metal electrode, and the insulating film, characterized in that extending to the pad portion, a touch-sensitive display device. 10. The method of claim 9,
The touch-sensitive display device, characterized in that it further comprises an anti-oxidation film formed on the first metal electrode and the second metal electrode extending to the pad portion. A touch-sensitive display device comprising a color filter and a black matrix formed on a substrate, the touch-sensitive display device comprising:
a plurality of first metal electrodes formed on the black matrix in a first direction;
a plurality of second metal electrodes formed on the black matrix in a second direction;
an insulating layer having a plurality of contact holes on the first metal electrode and the second metal electrode;
a plurality of first touch electrodes formed in segments on the insulating layer and connected to the first metal electrode through the contact hole;
a plurality of second touch electrodes formed by being divided into segments on the insulating layer and connected to the second metal electrode through the contact hole;
and a connection electrode connecting at least two second touch electrodes among the plurality of second touch electrodes on the insulating layer. 12. The method of claim 11,
The connection electrode is a touch-sensitive display device, characterized in that the second touch electrode is formed to extend. 13. The method of claim 12,
A portion of the connection electrode is characterized in that overlapping a portion of the first metal electrode, a touch-sensitive display device. 12. The method of claim 11,
The substrate is a touch-sensitive display device including a barrier layer in which an organic layer and an inorganic layer are alternately stacked. 12. The method of claim 11,
The first touch electrode and the second touch electrode are smaller than an integer multiple of a size of a sub-pixel. 12. The method of any one of claims 5 or 11,
and the first touch electrode and the second touch electrode overlap a part of the black matrix. 17. The method of claim 16,
The first touch electrode is a touch-sensitive display device, characterized in that it comprises a portion overlapped with a portion of the first metal electrode. 17. The method of claim 16,
The second touch electrode is a touch-sensitive display device, characterized in that it comprises a portion overlapping with a portion of the second metal electrode. 12. The method of any one of claims 5 or 11,
and the contact hole is formed on the black matrix. 12. The method of claim 11,
The first metal electrode, the second metal electrode, and the insulating film, characterized in that it comprises extending to the pad portion, a touch-sensitive display device.

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