KR102287465B1 - Touch screen-integrated display device and mathod for manufacturing the same - Google Patents

Abstract

A touch screen-integrated display device according to an embodiment of the present invention is provided. A touch screen-integrated display device includes a display panel including a touch sensing element and a display element, a first flexible connection substrate, and a second flexible connection substrate. The first flexible connection substrate is connected to the display panel to transmit a signal to the display device, and includes a first pad. The second flexible connection substrate is connected to the display panel to transmit a signal from the touch sensing element, and includes a second pad. The first flexible connection substrate and the second flexible connection substrate are electrically connected by the first pad and the second pad directly contacting each other.

Description

TOUCH SCREEN-INTEGRATED DISPLAY DEVICE AND MATHOD FOR MANUFACTURING THE SAME

The present invention relates to a touch screen-integrated display device and a method of manufacturing the same, and more particularly, to a touch screen-integrated display device having improved durability due to increased adhesion between flexible connection substrates, and a manufacturing method thereof.

A touch screen panel is a device that senses a user's touch input, such as a screen touch or gesture, on a display device. It is widely used in display devices.

In a general display device, a touch screen is implemented by attaching a touch screen panel on an upper substrate. In such a display device, since the touch screen panel is separately manufactured and attached to the outer surface of the display device, the overall thickness of the display device is increased, and there is a possibility that the visibility of an image may be deteriorated due to the increased thickness.

Recently, in order to solve the above problems, an in-cell type touch screen integrated display device that is manufactured by integrating a touch screen panel and a display panel has been developed.

The in-cell type touch screen-integrated display device includes two different flexible printed circuit boards for connecting a pad extending from a touch sensing element and a pad extending from the display element, respectively. As the in-cell type touch screen-integrated display device includes two flexible printed circuit boards, the circuit unit also requires two connectors. Accordingly, in order to reduce the size of the touch screen integrated display device, an attempt has been made to minimize the number of connectors of the flexible printed circuit board connected to the circuit unit.

Meanwhile, since the touch integrated circuit is connected to the touch sensing unit disposed in the circuit unit through the flexible printed circuit board, there is a problem in that the touch sensitivity is reduced due to signal interference in the wiring of the flexible printed circuit board.

[Related technical literature]

1. FLEXIBLE CIRCUIT COUTING (US Patent Application No. 14/204427)

The inventors of the present invention connect the flexible printed circuit board connected to the display element and the flexible printed circuit board connected to the touch sensing element to each other, thereby connecting the circuit unit and the flexible printed circuit board with one connector to reduce the size of the touch screen integrated display device. realized that it could be done. In addition, the inventors of the present invention have recognized that by placing the touch integrated circuit on a flexible printed circuit board, signal interference can be reduced and touch sensitivity can be improved.

The two flexible printed circuit boards are connected through conductive pads disposed on each of the flexible printed circuit boards, and may be connected to each other in a conventional manner of connecting the display panel and the flexible printed circuit board. For example, a conductive adhesive material such as ACF (Anisotropic Conductive Film), ACA (Anisotropic Conductive Adhesive) and ACP (Anisotropic Conductive Paste) including conductive balls is disposed on one flexible printed circuit board, and the other flexible printed circuit board Two flexible printed circuit boards can be connected by applying heat and pressure to the However, in this way, since both substrates are made of a flexible material, even when both substrates are sufficiently pressed with pressure, the conductive pad may be lifted due to recoil due to the ductility.

Accordingly, the problem to be solved by the present invention is to improve the reliability of the touch screen integrated display device by improving the contact force between the two flexible printed circuit boards in a touch screen integrated display device in which two flexible printed circuit boards are connected to each other. will be.

The problems 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.

In order to solve the above problems, a touch screen-integrated display device according to an embodiment of the present invention is provided. A touch screen-integrated display device includes a display panel including a touch sensing element and a display element, a first flexible connection substrate, and a second flexible connection substrate. The first flexible connection substrate is connected to the display panel to transmit a signal to the display device, and includes a first pad. The second flexible connection substrate is connected to the display panel to transmit and receive signals to and from the touch sensing element, and includes a second pad. The first flexible connection substrate and the second flexible connection substrate are electrically connected by the first pad and the second pad directly contacting each other.

According to another feature of the present invention, the touch screen integrated display device is disposed adjacent to a region where the first pad and the second pad are connected, and further includes an adhesive for bonding the first flexible connection substrate and the second flexible connection substrate. characterized in that

According to another feature of the present invention, the adhesive part is characterized in that it is made of a UV (ultraviolet) curable adhesive material.

According to another feature of the present invention, the surface of the first pad or the second pad is characterized in that the hydrophilic or hydrophobic surface treatment according to the adhesive material of the bonding portion.

According to another feature of the present invention, the adhesive portion surrounds the first pad or the second pad.

According to another feature of the present invention, the surface of the first pad or the second pad is characterized in that it consists of a plurality of irregularities.

According to another feature of the present invention, the surfaces of the first pad and the second pad in direct contact with each other are formed of a plurality of irregularities, and the plurality of irregularities of the first pad and the plurality of irregularities of the second pad are configured to engage with each other. characterized in that

According to another aspect of the present invention, the display panel includes a substrate having an exposed area including a display pad area and a touch pad area, and a device area, the display pad area being disposed on the display pad area, and the display pad and the touch pad area connected to the display element. and a touch pad connected to the touch sensing element, wherein the first flexible connection substrate is connected to the display panel through the display pad, and the second flexible connection substrate is connected to the display panel and the touch pad through the display panel. .

According to another feature of the present invention, the touch screen integrated display device further includes a touch integrated circuit disposed on the first flexible connection substrate, and the touch integrated circuit is electrically connected to the first pad.

According to another aspect of the present invention, the touch screen integrated display device further includes a circuit unit for controlling the display element and the touch sensing element, and the first flexible connection board and the second flexible connection board are connected to the circuit unit through a single connector. connected, and one connector is electrically connected to the touch integrated circuit on the first flexible connection board.

In order to solve the above problems, a method for manufacturing a touch screen-integrated display device according to an embodiment of the present invention is provided. A method of manufacturing a touch screen-integrated display device includes: connecting a first flexible connection substrate including a first pad to a display panel including a touch sensing element and a display element to transmit a signal to the display element; connecting the second flexible connection substrate to the display panel to transmit and receive signals to and from the touch sensing element; and pressing the first pad and the second pad together to electrically connect the first flexible connection substrate and the second flexible connection substrate It is characterized in that it comprises the step of making.

According to another aspect of the present invention, a method of manufacturing a touch screen-integrated display device includes applying a UV curable material to the first pad or the second pad before the step of pressing the first pad and the second pad with each other, and the first pad; After the step of pressing the second pad to each other, it characterized in that it further comprises the step of irradiating UV light to the UV curable material.

According to another feature of the present invention, the surfaces of the first pad and the second pad in direct contact with each other are formed of a plurality of irregularities, and the step of pressing the first pad and the second pad to each other includes the plurality of irregularities of the first pad. and the plurality of irregularities of the second pad are compressed to engage with each other.

The details of other embodiments are included in the detailed description and drawings.

The present invention has the effect of providing a touch screen-integrated display device having improved reliability due to increased adhesion when the flexible connection substrate is connected through a pad, and a method for manufacturing the same.

The present invention has the effect of stably connecting two flexible connection substrates to each other without using a film including a conductive ball.

The effect according to the present invention is not limited by the contents exemplified above, and more various effects are included in the present specification.

1A and 1B are schematic perspective views illustrating a touch screen integrated display device according to an exemplary embodiment.
1C is a schematic cross-sectional view illustrating a touch screen integrated display device according to Ic-Ic' of FIG. 1B.
FIG. 1D is a schematic cross-sectional view illustrating a touch screen integrated display device according to Id-Id′ of FIG. 1B .
2A is a schematic plan view illustrating a touch screen integrated display device according to another exemplary embodiment.
FIG. 2B is a schematic cross-sectional view illustrating a touch screen integrated display device according to IIb-IIb′ of FIG. 2A .
3 is a schematic cross-sectional view for explaining a touch screen-integrated display device according to another embodiment of the present invention.
4 is a flowchart illustrating a method of manufacturing a touch screen integrated 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 exemplary, and thus 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 subject matter 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.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between the two parts unless 'directly' is used.

Reference to a device or layer “on” another device or layer includes any intervening layer or other device directly on or in the middle of another device.

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

Like reference numerals refer to like elements throughout.

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.

1A and 1B are schematic perspective views illustrating a touch screen integrated display device according to an exemplary embodiment. 1C is a schematic cross-sectional view illustrating a touch screen integrated display device according to Ic-Ic' of FIG. 1B. FIG. 1D is a schematic cross-sectional view illustrating a touch screen integrated display device according to Id-Id′ of FIG. 1B .

For convenience of explanation, FIG. 1A shows a state in which the first flexible connection substrate 170 and the second flexible connection substrate 190 are not connected to each other, and FIG. 1B shows the first flexible connection substrate 170 and the second flexible connection substrate 170 . It shows a state in which the flexible connection substrates 190 are connected to each other.

1A to 1C , a touch screen-integrated display device 100 according to an embodiment of the present invention includes a substrate 110 , a display device 130 , a touch pad 112 , a display pad 111 , and a second 1 The flexible connection board 170 , the first pad 172 , the connector 175 , the second flexible connection board 190 , the second pad 192 , the driving integrated circuit 160 , and the touch integrated circuit 180 are connected to each other. include

The substrate 110 supports various components of the touch screen integrated display device 100 and is formed of an insulating material. The substrate 110 may be made of a material having flexibility, for example, plastic such as polyimide. As the substrate 110 is formed of a material having flexibility, a back plate for supporting the substrate 110 may be used.

1A and 1B , the substrate 110 includes a device area DA and an exposed area EA. The element area DA is an area in which an image is displayed in the touch screen integrated display device 100 , and is an area in which the display element 130 and the touch sensing element are disposed. The display element 130 is an element for displaying a screen, and the touch sensing element serves to recognize a touch from a user, and may include a plurality of touch driving electrodes and a plurality of touch sensing electrodes. The display element 130 and the touch sensing element are not limited and may be selected. For example, the display device 130 may be a display device including a liquid crystal layer, and may be a display device including an anode, an organic light emitting layer, and an organic light emitting device. When the display element 130 is formed of a liquid crystal layer, the touch sensing element may include a sensing electrode formed by patterning a common electrode. In this case, the touch sensing element is driven through the display element 130 and time division driving. When the display device 130 is formed of an organic light emitting layer, the touch sensing device may be disposed on an upper substrate facing the substrate 110 .

The exposed area EA is an area extending from one side of the device area DA, and is an area exposed without being covered by the upper substrate in a state in which the substrate 110 and a separate upper substrate are bonded to each other. The driving integrated circuit 160 is disposed in the exposed area EA of the substrate 110 . The driving integrated circuit 160 serves to transmit a signal for displaying an image to the display device 130 . Specifically, the driving integrated circuit 160 generates and displays driving signals such as a gate signal and a data signal using a plurality of control signals and RGB signals transmitted from a circuit unit disposed on a printed circuit board (PCB). It serves to transmit to the device 130 . When the driving integrated circuit 160 is disposed directly on the substrate 110 , the driving integrated circuit 160 may have a finer pitch, and the thickness of the touch screen integrated display device 100 may be reduced. .

1A and 1C , the exposed area EA includes a display pad area DPA in which the display pad 111 is disposed, and a touch pad area TPA in which the touch pad 112 is disposed. In one touch screen integrated display device 100 , there may be one pad area DPA, and there may be two touch pad areas TPA. 1A and 1B , in a state in which the two touch pad areas TPA are disposed at corners of the substrate 110 , the display pad area DPA is disposed between the two touch pad areas TPA. can be

Referring to FIG. 1C , the display pad 111 is disposed in the display pad area DPA of the substrate 110 . The display pad 111 is electrically connected to the display element 130 through wiring, and is also electrically connected to the pads of the first flexible connection substrate 170 .

A touch pad 112 is disposed in the touch pad area TPA of the substrate 110 . The touch pad 112 is electrically connected to the touch sensing element through wiring. 1A and 1B , when two touch pad areas TPA are disposed in the exposed area EA of the substrate 110, one touch pad area ( A driving signal (Tx signal) for driving the touch sensing element is transmitted to the touch pad 112 disposed in the TPA), and a sensing signal from the touch sensing element is transmitted to the touch pad 112 disposed in the remaining touch pad area TPA. (Rx signal) may be transmitted. The touch pad 112 may also be made of a material having excellent conductivity, and may be made of the same material as the display pad 111 .

Referring to FIG. 1A , the display pad 111 is connected to the pad of the first flexible connection substrate 170 using a conductive adhesive material such as ACF. The first flexible connection substrate 170 may be a flexible printed circuit board (FPCB) or a chip on film (COF). A wiring is disposed on the lower surface of the first flexible connection board 170 , and the wiring is connected to the connector 175 . The first flexible connection substrate 170 is made of a material having flexibility, and may be made of, for example, plastic such as polyimide.

The connector 175 is disposed at one end of the first flexible connection board 170 , and serves to connect the circuit unit and the first flexible connection board 170 . As shown in FIG. 1A , one connector 175 may be disposed on the first flexible connection board 170 .

Since a plurality of flexible printed circuit boards exist in a conventional touch screen display device, a plurality of connectors connected to circuits for controlling the display element and the touch sensing element also exist. Accordingly, in order to connect the circuit unit to the flexible printed circuit board, it is inconvenient to individually connect a plurality of connectors to the circuit unit.

However, in the touch screen integrated display device 100 according to an embodiment of the present invention, in order to connect the circuit part to the board 110 , only one connector 175 disposed on the flexible printed circuit board 110 is the circuit part. Since it is connected, the fastening process of the connector 175 can be performed more simply, and a smaller display device can be realized.

In addition, the first flexible connection substrate 170 includes a first pad 172 and a touch integrated circuit 180 for electrical connection with the second pad 192 of the second flexible connection substrate 190 . The touch integrated circuit 180 transmits a driving signal to the touch sensing element and determines whether a touch is made or a touch position by using the sensing signal from the touch sensing element.

Meanwhile, the touch pad 112 is connected to the pad of the second flexible connection substrate 190 . The second flexible connection substrate 190 may be made of the same material as the first flexible connection substrate 170 . A wiring is also disposed on the lower surface of the second flexible connection substrate 190 , and the second flexible connection substrate 190 is connected to the wiring and has a second pad 192 to be connected to the first pad 172 . The touch integrated circuit 180 is connected to the first pad 172 and is connected to the connector 175 . The signal from the touch sensing element is transmitted to the touch integrated circuit 180 through the first pad 172 of the first flexible connection substrate 170 through the second flexible connection substrate 190 , and the touch integrated circuit 180 . is, for example, converted into a digital signal, and then transmitted to the circuit unit through the wiring and the connector 175 of the first flexible connection board 170 .

Since the touch integrated circuit 180 is disposed on the first flexible connection substrate 170 instead of on the circuit unit, interference with a signal from the touch sensing element is reduced, and thus, accuracy of touch sensing may be improved.

Hereinafter, a connection relationship between the first flexible connection substrate 170 and the second flexible connection substrate 190 will be described with reference to FIG. 1B . Referring to FIG. 1B , a state in which the first flexible connection substrate 170 and the second flexible connection substrate 190 are bonded is shown.

The first flexible connection substrate 170 is connected to the display pad of the substrate 110 and extends from the display pad area DPA. The wiring of the first flexible connection board 170 , the first pad 172 , the touch integrated circuit 180 , and the connector 175 are disposed on the lower surface of FIG. 1B . At least a portion of the first flexible connection substrate 170 may be bent.

The second flexible connection substrate 190 is connected to the touch pad of the substrate 110 and extends from the touch pad area TPA. A portion of the second flexible connection substrate 190 extends and bends in the direction of the display device 130 . Accordingly, the wiring of the second flexible connection substrate 190 and the second pad 192 are disposed to face the first pad 172 of the first flexible connection substrate 170 and are connected to each other.

In the touch screen integrated display device 100 according to an embodiment of the present invention, the first pad 172 and the second pad 192 are connected without a film including a conductive ball. Referring to FIG. 1D , the first pad 172 of the first flexible connection substrate 170 and the second pad 192 of the second flexible connection substrate 190 directly contact each other and are electrically connected to each other. For example, the first pad 172 and the second pad 192 may be electrically connected to each other in direct contact with each other by thermocompression bonding.

Since both the first flexible connection substrate 170 and the second flexible connection substrate 190 are made of a flexible material, the first pad 172 and the second pad 192 are electrically connected to each other using a film including a conductive ball. In case of connecting with , it may not be completely adhered due to the ductility of the substrate and may be peeled off. However, in the touch screen-integrated display device 100 according to an embodiment of the present invention, both the substrate 110 to be connected are both in direct contact with the first pad 172 and the second pad 192 by thermal pressure. Even if it is made of a soft material, it can be attached with high adhesive force and have low resistance.

2A is a schematic plan view illustrating a touch screen integrated display device according to another exemplary embodiment. FIG. 2B is a schematic cross-sectional view illustrating a touch screen integrated display device according to IIb-IIb′ of FIG. 2A . In FIGS. 2A and 2B , other configurations are substantially the same as in FIG. 1B , except that the adhesive part 215 is disposed between the plurality of first pads 172 or between the plurality of second pads 192 . is omitted.

The first pad 172 of the first flexible connection substrate 170 and the second pad 192 of the second flexible connection substrate 190 are electrically connected by direct contact with each other, but the contact force between the two pads 172 and 192 is In order to further improve the , an adhesive portion 215 may be employed.

The adhesive part 215 bonds the first flexible connection substrate 170 and the second flexible connection substrate 190 to each other. The adhesive part 215 may be made of a UV (ultraviolet) curable material. Referring to FIG. 2A , the adhesive part 215 is disposed adjacent to a region where the first pad 172 and the second pad 192 are connected, for example, the first pad 172 and the second pad 192 . ) to surround Referring to FIG. 2B , it is disposed in a space defined by the first pad 172 , the second pad 192 , the first flexible connection substrate 170 , and the second flexible connection substrate 190 , and the first pad ( It is not disposed between the 172 and the second pad 192 . Accordingly, the adhesive part 215 does not increase the resistance between the first pad 172 and the second pad 192 , and the first flexible connection substrate 170 and the second flexible connection substrate 190 do not. can only increase the adhesion of Furthermore, the surface of the first pad 172 or the second pad 192 is not interposed between the first pad 172 and the second pad 192 , so that the adhesive part 215 has properties of the adhesive material of the adhesive part 215 . It can be hydrophilic or hydrophobic surface treatment.

3 is a schematic cross-sectional view for explaining a touch screen-integrated display device according to another embodiment of the present invention. In FIG. 3, only the portion where the first pad 372 and the second pad 392 are connected is different, and other configurations are substantially the same as in FIG. 1B, so the first flexible connection substrate 170, the first pad ( 372), the second flexible connection substrate 190, and only the second pad 392 are illustrated.

In FIG. 3 , the surface of each of the first pad 372 and the second pad 392 includes a plurality of irregularities 372a and 392a. In addition, the plurality of irregularities 372a of the first pad 372 and the irregularities 392a of the second pad 392 are configured to engage with each other. Accordingly, when the first pad 372 and the second pad 392 are thermocompression-bonded, the contact area between the first pad 372 and the second pad 392 increases, and the first pad 372 and Adhesiveness of the second pad 392 may be improved.

In addition, when the first pad 372 and the second pad 392 are made of different materials having different hardness or viscosity, only one surface of the first pad 372 or the second pad 392 has a plurality of irregularities. (372a, 392a) may be formed.

When the plurality of irregularities 372a and 392a are formed on the surfaces of the first pad 372 and/or the second pad 392 , the first pad 372 and the second pad 392 may be more stably connected. Accordingly, the reliability of the touch screen integrated display device may be improved. In addition, a structure in which a plurality of concavities and convexities 372a and 392a are formed on the surface of the first pad 372 or the second pad 392 may be employed even in the configuration including the adhesive part 215 as shown in FIG. 2B , In this case, the electrical connection between the first pad 372 and the second pad 392 may be more stably maintained.

4 is a flowchart illustrating a method of manufacturing a touch screen integrated display device according to an embodiment of the present invention.

First, a first flexible connection substrate and a second flexible connection substrate are provided. The first flexible connection substrate and the second flexible connection substrate are connected to each other, and each of the first flexible connection substrate and the second flexible connection substrate is connected to the display panel. However, the connection order may vary. For example, after the first flexible connection substrate is connected to the display panel, the second flexible connection substrate is connected to the display panel, and then the second flexible connection substrate and the second flexible connection substrate are connected to each other. Alternatively, the first flexible connection substrate and the second flexible connection substrate may be connected to each other first, and then the first flexible connection substrate and the second flexible connection substrate connected to each other may be connected to the display panel.

In FIG. 4 , the first flexible connection substrate including the first pad is first connected to transmit a signal to the display device on the display panel ( S410 ). Next, the second flexible connection substrate including the second pad is connected to the display panel to transmit and receive signals to and from the touch sensing element ( S420 ). The first flexible connection substrate and the second flexible connection substrate may be connected to the display panel through a film including conductive balls.

Next, in order to electrically connect the first flexible connection substrate and the second flexible connection substrate, the first pad and the second pad are pressed together ( S430 ). The first pad and the second pad may be thermocompression-bonded, and the first pad and the second pad are directly connected to each other.

In addition, various methods may be employed to improve the adhesion between the first pad and the second pad. In an exemplary embodiment, prior to thermocompression bonding of the first pad and the second pad, the UV curable material may be applied between the first pads or between the second pads. The UV curable material may be applied by an inkjet method or the like, and may be applied in various ways so as not to be positioned on the first pad or the second pad. In addition, the first pad or the second pad may be surface-treated to be hydrophilic or hydrophobic depending on the physical properties of the UV curable material. Next, after the first pad and the second pad are pressed together, UV light is irradiated to the UV curable material to cure the UV curable material to form an adhesive part.

In another embodiment for improving the adhesive force between the first pad and the second pad, before thermocompression bonding between the first pad and the second pad, the surfaces of the first pad and the second pad in direct contact with each other may have a plurality of irregularities. can be formed Next, the plurality of irregularities of the plurality of first pads and the plurality of irregularities of the plurality of second pads are compressed to be engaged with each other. According to the method of manufacturing a touch screen-integrated display device according to various embodiments of the present disclosure, adhesiveness between the first flexible connection substrate and the second flexible connection substrate is improved, and the electrical connection between the pads connecting them is more stable. It can be maintained so that reliability and durability of the manufactured touch screen integrated display device can be improved.

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. . Therefore, 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. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: touch screen integrated display device
110: substrate
111: display pad
112: touch pad
130: display element
160: driving integrated circuit
170: first flexible connection substrate
172, 372: first pad
175: connector
180: touch integrated circuit
190: second flexible connection substrate
192, 392: second pad
215: adhesive part
372a, 392a: irregularities

Claims (13)

a display panel including a touch sensing element and a display element;
a display pad electrically connected to the display element;
a touch pad electrically connected to the touch sensing element;
a first flexible connection substrate connected to the display pad of the display panel to transmit a signal to the display element and including a first pad; and
and a second flexible connection substrate connected to the touch pad of the display panel to transmit and receive a signal to and from the touch sensing element and including a second pad;
the first flexible connection substrate is disposed on the display pad;
the second flexible connection substrate is disposed on the display pad and the first flexible connection substrate to cover the first flexible connection substrate;
The first flexible connection substrate and the second flexible connection substrate are electrically connected to each other by directly contacting the first pad and the second pad with each other. According to claim 1,
The touch screen integrated display device of claim 1, further comprising an adhesive portion disposed adjacent to an area where the first pad and the second pad are connected, and bonding the first flexible connection substrate and the second flexible connection substrate. . 3. The method of claim 2,
The adhesive part is made of a UV (ultraviolet) curable adhesive material. 3. The method of claim 2,
A surface of the first pad or the second pad is treated with a hydrophilic or hydrophobic surface according to an adhesive material of the adhesive part. 3. The method of claim 2,
The adhesive part surrounds the first pad or the second pad. According to claim 1,
A surface of the first pad or the second pad is formed of a plurality of irregularities. According to claim 1,
Surfaces of the first pad and the second pad in direct contact with each other are made of a plurality of irregularities,
The plurality of irregularities of the first pad and the plurality of irregularities of the second pad are configured to engage with each other. According to claim 1,
The display panel is
a substrate having an exposed area including a display pad area and a touch pad area, and a device area;
a display pad disposed in the display pad area and connected to the display element;
a touch pad disposed in the touch pad area and connected to the touch sensing element;
the first flexible connection substrate is connected to the display panel through the display pad;
The second flexible connection substrate is connected to the display panel through the touch pad. According to claim 1,
and a touch integrated circuit disposed on the first flexible connection substrate, wherein the touch integrated circuit is electrically connected to the first pad. 10. The method of claim 9,
Further comprising a circuit unit for controlling the display element and the touch sensing element,
The first flexible connection board and the second flexible connection board are connected to the circuit unit through one connector,
wherein the one connector is electrically connected to the touch integrated circuit on the first flexible connection board. connecting a first flexible connection substrate including a first pad to a display panel including a touch sensing element and a display element to transmit a signal to the display element;
connecting a second flexible connection substrate including a second pad to the display panel to transmit and receive a signal to and from the touch sensing element; and
compressing the first pad and the second pad to each other to electrically connect the first flexible connection substrate and the second flexible connection substrate;
the first flexible connection substrate is connected to a display pad of the display panel;
the second flexible connection substrate is connected to a touch pad of the display panel;
the first flexible connection substrate is disposed on the display pad;
The method of claim 1, wherein the second flexible connection substrate is disposed on the display pad and the first flexible connection substrate to cover the first flexible connection substrate. 12. The method of claim 11,
applying a UV curable material to the first pad or the second pad before the step of pressing the first pad and the second pad to each other; and
The method of claim 1, further comprising: irradiating UV light to the UV curable material after the step of pressing the first pad and the second pad to each other. 12. The method of claim 11,
Surfaces of the first pad and the second pad in direct contact with each other are made of a plurality of irregularities,
The step of compressing the plurality of first pads and the plurality of second pads to each other is characterized in that the step of compressing the plurality of irregularities of the first pad and the plurality of irregularities of the second pad to be engaged with each other, touch A method for manufacturing an integrated screen display device.

Images