KR102467016B1 - Flexible display device including touch detecting sensor - Google Patents

Abstract

The present invention relates to a flexible display device including a touch sensor. A display device according to an exemplary embodiment of the present invention includes a flexible substrate, a light emitting member positioned on the flexible substrate, an sealing layer positioned on the light emitting member and including a plurality of encapsulation thin films, and a touch sensor included in the sealing layer. The plurality of encapsulation thin films include at least one inorganic layer and at least one organic layer that are alternately stacked, and the touch sensing layer is positioned between the inorganic layer and the organic layer adjacent to each other. do.

Description

Flexible display device including a touch sensor {FLEXIBLE DISPLAY DEVICE INCLUDING TOUCH DETECTING SENSOR}

The present invention relates to a flexible display device including a touch sensor.

Display devices such as a liquid crystal display (LCD), an organic light emitting diode display (OLED display), and an electrophoretic display include an electric field generating electrode and an electro-optical active layer (electro-optical display). active layer). For example, an organic light emitting display device includes an organic light emitting layer as an electro-optical active layer. The electric field generating electrode may be connected to a switching element such as a thin film transistor to receive a data signal, and the electro-optical active layer converts the data signal into an optical signal to display an image.

When the display panel of such a display device uses a heavy and fragile glass substrate, its portability and large-screen display are limited. Therefore, in recent years, a flexible display device using a plastic substrate that is light in weight, strong against impact, and flexible as a substrate of a display panel has been actively developed.

Recently, such a display device may include a touch sensing function capable of interacting with a user in addition to a function of displaying an image. The touch detection function detects changes in pressure, charge, light, etc. applied to the screen by the display device when the user writes or draws by approaching or touching the screen with a finger or touch pen, so that an object appears on the screen. It is to find out contact information, such as whether someone approached or contacted him and the location of the contact. The display device may receive an image signal and display an image based on the contact information.

This touch sensing function may be implemented through a touch sensor. The touch sensor may be classified according to various types such as a resistive type, a capacitive type, an electromagnetic type (EM), and an optical type.

For example, in the case of a resistive touch sensor, two spaced apart electrodes facing each other may come into contact with each other due to pressure from an external object. When the two electrodes are in contact with each other, the contact position and the like can be found by recognizing a voltage change according to a resistance change at that position.

The capacitive touch detection sensor includes a sensing capacitor composed of a plurality of sensing electrodes capable of transmitting a sensing signal, and the charge capacitance of the sensing capacitor generated when a conductor such as a finger approaches the touch sensing sensor is measured. It is possible to detect contact and location of contact by detecting change or charge amount change. The capacitive touch detection sensor includes a plurality of touch electrodes disposed in the touch detection area and signal transfer wires connected to the touch electrodes. The signal transfer line may transfer a sensing input signal to the touch electrode or transfer a sensing output signal of the touch electrode generated according to a touch to the sensing signal controller.

In the case of a flexible display device, a touch sensor is formed in a separate touch panel and attached to the flexible display device (add-on cell type).

When attaching the touch panel on the flexible display device, a process of manufacturing the touch panel and attaching the touch panel on the display device is added, resulting in a decrease in yield and an increase in cost. In addition, in order to attach and fix the touch panel on the flexible display device, an adhesive layer is positioned between the touch panel and the display device or on the upper portion of the touch panel, thereby increasing the thickness of the display device. In addition, transmittance may decrease, reflectance may increase, and haze may increase due to the attached touch panel. In addition, a wire may be disconnected due to corrosion of a metal electrode constituting a touch sensor of a touch panel attached to the outside of the display device. In addition, due to these various reasons, when bending the flexible display device to which the touch panel is attached, durability may be deteriorated and defects may occur.

An object to be solved by the present invention is to solve the above problems, and to simplify a manufacturing process and reduce cost of a flexible display device including a touch sensor. In addition, the thickness of the flexible display device including the touch sensor is reduced, the optical characteristics are improved, and impurities such as moisture are prevented from penetrating into the touch sensor, thereby reducing the defect of the touch sensor and increasing durability when bending the flexible display device. will be.

A display device according to an exemplary embodiment of the present invention includes a flexible substrate, a light emitting member positioned on the flexible substrate, an sealing layer positioned on the light emitting member and including a plurality of encapsulation thin films, and a touch sensor included in the sealing layer. The plurality of encapsulation thin films include at least one inorganic layer and at least one organic layer that are alternately stacked, and the touch sensing layer is positioned between the inorganic layer and the organic layer adjacent to each other. do.

A display device according to an embodiment of the present invention includes a flexible substrate including a first film, a light emitting member positioned on the flexible substrate, a sealing layer positioned on the light emitting member, and formed on an upper or lower surface of the first film. and a touch sensing layer including a touch sensing sensor.

At least one first encapsulation thin film positioned on the touch sensing layer among the plurality of encapsulating thin films may expose a pad portion of the touch sensing layer.

The touch sensor may include a plurality of touch electrodes positioned on the same layer.

A touch wire connected to the touch electrode may be further included, and an end portion of the touch wire may form the pad part.

The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are separated from each other and are alternately disposed without overlapping each other, and are arranged in a first direction. may be connected to each other by a plurality of first connection parts, and the plurality of second touch electrodes arranged in a second direction different from the first direction may be connected to each other by a plurality of second connection parts.

An insulating film positioned between the first connection part and the second connection part and insulating the first connection part and the second connection part may be further included.

The first connection part may be positioned on the same layer as the first touch electrode and integrated with the first touch electrode, and the second connection part may be positioned on a different layer from the second touch electrode.

The second connection part may be located on the insulating layer.

The touch electrode may include at least one of a dummy pattern for protection from static electricity, a protrusion pattern, and a static electricity induction pattern.

At least one inorganic layer and at least one organic layer alternately stacked among the plurality of encapsulation thin films may be positioned on the touch sensing layer.

*

* The second connection part may include a low-resistance opaque conductive material.

A second film positioned between the first film and the light emitting member may be further included, and the second film may include polyimide (PI).

According to an embodiment of the present invention, a manufacturing process of a flexible display device including a touch sensor can be simplified and cost can be reduced.

A thickness of a flexible display device including a touch sensor may be reduced and optical characteristics may be improved.

Impurities such as moisture may be prevented from penetrating the touch sensor, thereby reducing defects of the touch sensor and increasing durability of the flexible display device during bending.

1 is a block diagram of a flexible display device according to an exemplary embodiment of the present invention;
2 is a plan view illustrating a touch sensor of a flexible display device according to an exemplary embodiment of the present invention;
3 is an enlarged view of a part of the touch detection sensor shown in FIG. 2;
4 is a cross-sectional view of the touch detection sensor shown in FIG. 3 cut along line IV-IV;
5 is a cross-sectional view of one pixel of a flexible display device according to an exemplary embodiment of the present invention;
6 is a cross-sectional view of an encapsulation layer of a flexible display device according to an exemplary embodiment of the present invention;
7 is a cross-sectional view of a base film and a touch sensing layer of a flexible display device according to an exemplary embodiment of the present invention;
8 to 12B are diagrams sequentially illustrating a manufacturing process of forming a touch sensor on or under a base film of a flexible display device according to an embodiment of the present invention;
13 is a plan view of a touch sensor included in a flexible display device according to an embodiment of the present invention;
14 is a cross-sectional view of the touch detection sensor shown in FIG. 13 cut along line XIV-XIV;
15 is a cross-sectional view of the touch detection sensor shown in FIG. 13 cut along line XV-XV;
16 and 17 are plan views of a touch sensor included in a flexible display device according to an embodiment of the present invention, respectively.
18 is a plan view illustrating a touch detection sensor and a ground wire of a flexible display device according to an embodiment of the present invention;
FIG. 19 is an enlarged view of a portion of the flexible display device shown in FIG. 18 .

Then, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In the drawings, the thickness is shown enlarged to clearly express the various layers and regions. Like reference numerals have been assigned to like parts throughout the specification. When a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where it is "directly on" the other part, but also the case where there is another part in between. Conversely, when a part is said to be "directly on" another part, it means that there is no other part in between.

Now, a display device and a driving method thereof according to an exemplary embodiment of the present invention will be described in detail with reference to drawings.

First, a flexible display device including a touch sensor according to an exemplary embodiment of the present invention will be described with reference to FIGS. 1 to 4 .

1 is a block diagram of a flexible display device according to an exemplary embodiment of the present invention, FIG. 2 is a plan view illustrating a touch sensor of the flexible display device according to an exemplary embodiment of the present invention, and FIG. An enlarged view of a part of one touch sensor, and FIG. 4 is a cross-sectional view of the touch sensor shown in FIG. 3 cut along line IV-IV.

Referring to FIG. 1 , a flexible display device according to an embodiment of the present invention includes a display panel 300, a display controller connected to the display panel 300, and a touch controller 700. include

The display panel 300 can display an image and sense a touch. When viewed in a planar structure, the display panel 300 includes a display area DA displaying an image and a peripheral area PA around the display area DA.

A part or the entire area of the display panel 300 may be a touch active area (TA) capable of detecting a touch. The touch active area TA is an area where a touch can be sensed when an object actually approaches or contacts the display panel 300 . Here, the contact includes not only a case in which an external object such as a user's hand directly touches the display panel 300 but also a case in which an external object approaches the display panel 300 or moves while approaching the display panel 300 (hovering).

FIG. 2 shows an example in which approximately the entirety of the display area DA is the touch active area TA, but is not limited thereto. A portion of the peripheral area PA may also be used as the touch active area TA, or only a portion of the display area DA may form the touch active area TA.

Referring to FIG. 1 , a plurality of pixels PX and a plurality of display signal lines (not shown) that are connected to the pixels PX and transmit driving signals are positioned in the display area DA.

The display signal lines include a plurality of scan signal lines (not shown) that transmit scan signals and a plurality of data lines (not shown) that transmit data signals. The scan signal line and the data line may extend while crossing each other. The display signal line may extend to the peripheral area PA to form a pad portion (not shown).

The plurality of pixels PX may be arranged in an approximate matrix form, but is not limited thereto. Each pixel PX may include a switching element (not shown) connected to the gate line and the data line, and a pixel electrode (not shown) connected thereto. The switching element may be a three-terminal element such as a thin film transistor integrated in the display panel 300 . The switching element may be turned on or off according to the gate signal transmitted by the gate line to selectively transfer the data signal transmitted by the data line to the pixel electrode. The pixel PX may further include a counter electrode (not shown) facing the pixel electrode. In the case of an organic light emitting display device, a light emitting layer may be positioned between a pixel electrode and a counter electrode to form a light emitting element. The opposite electrode may transmit a common voltage.

In order to implement color display, each pixel PX can display one of the primary colors, and a desired color is recognized as the sum of these primary colors. Examples of the primary colors include three primary colors such as red, green, and blue, or quaternary colors. Each pixel PX may further include a color filter positioned at a position corresponding to each pixel electrode and representing one of the basic colors, and a light emitting layer included in a light emitting element may emit colored light.

A touch detection sensor is positioned in the touch active area TA. A touch detection sensor may detect a touch in a variety of ways. For example, touch detection sensors can be classified into various types such as resistive type, capacitive type, electro-magnetic type (EM), and optical type. have.

In this embodiment, a capacitive touch sensor will be described as an example.

Referring to FIG. 2 , the touch detection sensor according to an embodiment of the present invention includes a plurality of touch electrodes, and the plurality of touch electrodes include a plurality of first touch electrodes 410 and a plurality of second touch electrodes 420. can include The first touch electrode 410 and the second touch electrode 420 are separated from each other.

Referring to FIG. 2 , the plurality of first touch electrodes 410 and the plurality of second touch electrodes 420 may be alternately distributed and disposed so as not to overlap each other in the touch active area TA. A plurality of first touch electrodes 410 may be disposed along the column and row directions, respectively, and a plurality of second touch electrodes 420 may also be disposed along the column and row directions, respectively.

The first touch electrode 410 and the second touch electrode 420 may be positioned on the same layer.

Each of the first touch electrode 410 and the second touch electrode 420 may have a rectangular shape, but is not limited thereto and may have various shapes, such as having a protrusion to improve the sensitivity of the touch sensor.

The plurality of first touch electrodes 410 arranged in the same row or column may be connected to each other or separated from each other inside or outside the touch active area TA. Similarly, at least some of the plurality of second touch electrodes 420 arranged in the same column or row may be connected to each other or separated from each other inside or outside the touch active area TA. For example, as shown in FIG. 2 , when the plurality of first touch electrodes 410 disposed in the same row are connected to each other inside the touch active area TA, the plurality of second touch electrodes 420 disposed in the same column ) may be connected to each other within the touch active area TA.

More specifically, the plurality of first touch electrodes 410 positioned in each row are connected to each other through the first connection part 412, and the plurality of second touch electrodes 420 positioned in each column are connected to each other through the second connection part ( 422) may be connected to each other.

Referring to FIGS. 3 and 4 , a first connection portion 412 connecting adjacent first touch electrodes 410 is located on the same layer as the first touch electrodes 410 and can be made of the same material. That is, the first touch electrode 410 and the first connection portion 412 may be integral with each other and may be patterned at the same time.

The second connection portion 422 connecting adjacent second touch electrodes 420 may be positioned on a layer different from that of the second touch electrode 420 . That is, the second touch electrode 420 and the first connection portion 412 may be separated from each other and may be separately patterned. The second touch electrode 420 and the second connection portion 422 may be connected to each other through direct contact.

An insulating film 430 is positioned between the first connection part 412 and the second connection part 422 to insulate the first connection part 412 and the second connection part 422 from each other. As shown in FIGS. 3 and 4 , the insulating film 430 may be a plurality of independent island-shaped insulators disposed at each intersection of the first connection part 412 and the second connection part 422 . The insulating layer 430 may expose at least a portion of the second touch electrode 420 so that the second connection portion 422 can be connected to the second touch electrode 420 .

The insulating layer 430 may have a shape with rounded edges or a polygonal shape.

According to another embodiment of the present invention, the insulating film 430 is formed over the entire surface and is positioned on a part of the second touch electrode 420 for connection of the second touch electrodes 420 adjacent in the column direction. may have been removed.

3 and 4, the second connection portion 422 connecting adjacent second touch electrodes 420 is located on the same layer as the first touch electrode 410, and the first touch electrode ( 410) and connecting the first touch electrodes 410 adjacent to each other, the first connection portion 412 may be located on a different layer from the first touch electrode 410.

Referring to FIG. 2 , the first touch electrodes 410 connected to each other in each row are connected to the touch controller 700 through the first touch wire 411, and the second touch electrodes 420 connected to each other in each column are connected to the touch controller 700 through the first touch wire 411. It may be connected to the touch controller 700 through the 2 touch wires 421 . As shown in FIG. 2 , the first touch wire 411 and the second touch wire 421 may be located in the peripheral area PA of the display panel 300, but may be located in the touch active area TA. may be

The ends of the first touch wire 411 and the second touch wire 421 form the pad part 450 in the peripheral area PA of the display panel 300 .

The first touch electrode 410 and the second touch electrode 420 may have transmittance greater than or equal to a predetermined level so that light may be transmitted from the display panel 300 . For example, the first touch electrode 410 and the second touch electrode 420 may include a thin metal layer such as indium tin oxide (ITO), indium zinc oxide (IZO), silver nanowire (AgNw), or a metal mesh. , It may be made of a transparent conductive material such as carbon nanotube (CNT), but is not limited thereto.

The first touch wire 411 and the second touch wire 421 are made of a transparent conductive material included in the first touch electrode 410 and the second touch electrode 420, or molybdenum (Mo), silver (Ag), titanium ( Ti), copper (Cu), aluminum (Ti), molybdenum / aluminum / molybdenum (Mo / Al / Mo) may include a low resistance material.

The first touch electrode 410 and the second touch electrode 420 adjacent to each other form a mutual sensing capacitor that functions as a touch sensor. The mutual sensing capacitor may receive a sensing input signal through one of the first touch electrode 410 and the second touch electrode 420 and output a change in the amount of charge due to the contact of an external object as a sensing output signal through the other touch electrode. have.

2 to 4, the plurality of first touch electrodes 410 and the plurality of second touch electrodes 420 may be separated from each other and connected to the touch controller 700 through touch wires (not shown). may be In this case, each touch electrode may form a self sensing capacitance as a touch sensing sensor. The self-sensing capacitor may be charged with a predetermined amount of charge by receiving a sensing input signal, and when there is a contact with an external object such as a finger, the amount of charged charge may change and output a sensing output signal different from the input sensing input signal.

Referring back to FIG. 1 , the display controller 600 controls an image display operation of the display panel 300 .

More specifically, the signal controller 600 receives an input image signal containing luminance information of each pixel PX and an input control signal for controlling its display from the outside. The signal controller 600 processes the input video signal based on the input video signal and the input control signal, converts it into an output video signal, and generates control signals such as a gate control signal and a data control signal. The signal controller 600 sends a gate control signal to a gate driver (not shown) and sends a data control signal and an output image signal to a data driver (not shown).

Although not shown, the data driver receives an output image signal for one row of pixels PX according to a data control signal, selects a grayscale voltage corresponding to each output image signal, and converts the output image signal into a data voltage. , is applied to the corresponding data line. The gate driver turns on a switching element connected to the gate line by applying a gate-on voltage to the gate line according to the gate control signal. Then, the data voltage applied to the data line is applied to the corresponding pixel PX through the turned-on switching element. When the data voltage is applied to the pixel PX, the pixel PX may display luminance corresponding to the data voltage through various optical conversion elements such as light emitting elements.

The touch controller 700 is connected to a touch sensor located in the touch active area and controls the operation of the touch sensor. The touch controller 700 may transmit a detection input signal to the touch sensor or receive and process a detection output signal. The touch controller 700 may process the detection output signal to generate touch information such as whether or not a touch has been touched and a touch location.

Driving devices such as the data driver, gate driver, and display controller 600 may be directly mounted on the display panel 300 in the form of at least one integrated circuit chip or a flexible printed circuit film (not shown). It may be mounted on top and attached to the display panel 300 in the form of a TCP (tape carrier package) or mounted on a separate printed circuit board (not shown). Unlike this, the driving device may be integrated into the display panel 300 together with display signal lines and switching elements.

The touch controller 700 is also directly mounted on the display panel 300 in the form of at least one integrated circuit chip, mounted on a flexible printed circuit film and attached to the display panel 300 in the form of a TCP, or on a separate printed circuit board. may also be fitted. The touch controller 700 may be connected to the first touch wire 411 and the second touch wire 421 through the pad part 450 of the display panel 300 .

Next, the structure of the flexible display device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 5 and 6 along with FIGS. 1 to 4 described above.

5 is a cross-sectional view of one pixel of the flexible display device according to an exemplary embodiment, and FIG. 6 is a cross-sectional view of an encapsulation layer of the flexible display device according to an exemplary embodiment.

Referring to FIG. 5 , the flexible display device according to an exemplary embodiment includes a flexible substrate, and the flexible substrate may include various plastics, metal thin films, or ultra-thin glass. The flexible substrate according to the present embodiment may include at least one plastic film. The plastic film is, for example, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), polyarylate (PAR), polyetherimide (PEI), polyethersulfone (PES) or polyimide ( PI) and the like.

5 shows an example in which the flexible substrate includes a first film 112 and a second film 113 . For example, the first film 112 may include polyimide (PI) having strong moisture resistance, and the second film 113 may include polyethylene terephthalate (PET) as a base film. . The first film 112 is positioned over the second film 113 . The second film 113 may be omitted.

A barrier layer 111 is positioned on the first film 112 . The barrier film 111 may prevent impurities from the outside from penetrating the flexible substrate and may have a flat surface. The barrier layer 111 may include at least one of an inorganic layer and an organic layer. For example, the barrier layer 111 may include silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiOxNy), or the like. The barrier film 111 may be omitted.

A display element including a plurality of thin films is positioned on the barrier film 111 . The display element includes several signal lines and wirings described above, and a plurality of pixels PX. The signal lines may include a plurality of scan signal lines for transmitting scan signals and a plurality of data lines for transmitting data signals.

Referring to FIG. 5 , an example of a structure of a display device according to an exemplary embodiment of the present invention will be described. A plurality of semiconductors 154b are positioned on the barrier layer 111 . The semiconductor 154b may include a channel region 152b and a source region 153b and a drain region 155b positioned on both sides of the channel region 152b and formed by being doped. The semiconductor 154b may include amorphous silicon, polycrystalline silicon, or an oxide semiconductor.

A gate insulating layer 140 made of silicon nitride (SiNx) or silicon oxide (SiOx) is positioned on the semiconductor 154b.

A plurality of gate conductors including a plurality of scan signal lines (not shown) and a control electrode 124b are positioned on the gate insulating layer 140 . The control electrode 124b may overlap a portion of the semiconductor 154b, particularly the channel region 152b.

A first passivation layer 180a is positioned on the gate insulating layer 140 and the gate conductor. The first passivation layer 180a and the gate insulating layer 140 may include a contact hole 183b exposing the source region 153b of the semiconductor 154b and a contact hole 185b exposing the drain region 155b.

A plurality of data conductors including a plurality of data lines 171 , a plurality of input electrodes 173b and a plurality of output electrodes 175b are positioned on the first passivation layer 180a. The data line 171 transmits a data signal and may cross the scan signal line. The input electrode 173b is connected to the data line 171 . The output electrode 175b may have an island shape and is separated from the data line 171 . The input electrode 173b and the output electrode 175b face each other on the semiconductor 154b.

The input electrode 173b and the output electrode 175b may be connected to the source region 153b and the drain region 155b of the semiconductor 154b through contact holes 183b and 185b, respectively.

The control electrode 124b, the input electrode 173b, and the output electrode 175b form a driving thin film transistor Qd together with the semiconductor 154b. However, the structure of the driving thin film transistor Qd is not limited thereto and may be variously changed.

A second passivation layer 180b made of an inorganic insulator such as silicon nitride or silicon oxide may be positioned on the data conductor. The second passivation layer 180b may have a flat surface without steps in order to increase the light emitting efficiency of the light emitting member to be formed thereon. The second passivation layer 180b may have a contact hole 185c exposing the output electrode 175b.

A plurality of pixel electrodes 191 are positioned on the second passivation layer 180b.

The pixel electrode 191 of each pixel PX is physically and electrically connected to the output electrode 175b through the contact hole 185c of the second passivation layer 180b. The pixel electrode 191 may include a semi-transmissive conductive material or a reflective conductive material.

A pixel defining layer (also referred to as a barrier rib) 360 having a plurality of openings exposing the pixel electrode 191 may be positioned on the second passivation layer 180b. An opening of the pixel defining layer 360 exposing the pixel electrode 191 may define each pixel area. The pixel defining layer 360 may be omitted.

A light emitting member 370 is positioned on the pixel defining layer 360 and the pixel electrode 191 . The light emitting member 370 may include a first organic common layer 371 , a plurality of light emitting layers 373 , and a second organic common layer 375 sequentially stacked.

The first organic common layer 371 may include, for example, at least one of a hole injecting layer and a hole transport layer sequentially stacked. The first organic common layer 371 may be formed over the entire display area where the pixel PX is disposed or may be formed only in each pixel PX area.

The light emitting layer 373 may be positioned on the pixel electrode 191 of each corresponding pixel PX. The light emitting layer 373 may be made of an organic material that uniquely emits light in basic colors such as red, green, and blue, or may have a structure in which a plurality of organic material layers emitting light of different colors are stacked.

The second organic common layer 375 may include, for example, at least one of an electron transport layer and an electron injection layer sequentially stacked. The second organic common layer 375 may be formed over the entire display area where the pixel PX is disposed or may be formed only in each pixel PX area.

The first and second organic common layers 371 and 375 are for improving luminous efficiency of the light emitting layer 373, and either one of the first and second organic common layers 371 and 375 may be omitted.

A counter electrode 270 transmitting a common voltage is positioned on the light emitting member 370 . The counter electrode 270 may include a transparent conductive material. For example, the counter electrode 270 is made of a transparent conductive material or formed by thinly stacking a metal such as calcium (Ca), barium (Ba), magnesium (Mg), aluminum (Al), or silver (Ag), thereby providing light transmittance. can be made to have

The pixel electrode 191, the light emitting member 370, and the counter electrode 270 of each pixel PX form a light emitting element, and one of the pixel electrode 191 and the counter electrode 270 serves as a cathode and the other one serves as a cathode. One becomes the anode.

The flexible display device according to an exemplary embodiment of the present invention may be a top emission type displaying an image by emitting internal light from the light emitting member 370 upward.

An encapsulation layer 280 may be positioned on the counter electrode 270 . The sealing layer 280 may encapsulate the light emitting member 370 and the counter electrode 270 to prevent penetration of moisture and/or oxygen from the outside.

The sealing layer 280 may include a plurality of encapsulating thin films.

Referring to FIG. 6 , the plurality of encapsulation thin films of the encapsulation layer 280 may include at least one inorganic layer 280_1 and at least one organic layer 280_2 that are alternately stacked. The inorganic layer 280_1 may include an inorganic material such as aluminum oxide (AlOx), silicon oxide (SiOx), or silicon nitride (SiNx). 6 illustrates an example in which the inorganic film 280_1 is positioned at the bottom or top of the sealing layer 280, but is not limited thereto, and the organic film 280_2 is placed at the bottom or top of the sealing layer 280. may be located.

Inside the sealing layer 280 according to an embodiment of the present invention, a touch sensing layer 400 including a touch sensing sensor and touch wires 411 and 412 connected thereto is positioned. That is, the touch sensing layer 400 may be positioned between the plurality of encapsulation thin films of the encapsulation layer 280 . More specifically, the touch sensing layer 400 may be positioned between the organic layer 280_2 and the inorganic layer 280_1 of the sealing layer 280 adjacent to each other.

FIG. 6 shows an example in which the touch sensing layer 400 is positioned right on the inorganic film 280_1 located on the upper side of the plurality of encapsulation thin films of the sealing layer 280, but is not limited thereto, and the organic film 280_2 ), the touch-sensing layer 400 may be positioned directly on top of the other inorganic layer 280_1.

When the touch-sensing layer 400 is located between the encapsulation thin films generally located on the lower side of the plurality of encapsulation thin films of the sealing layer 280, interference due to parasitic capacitance between the touch-sensing layer 400 and the lower display element may occur. can Therefore, in this case, it is preferable to lower the permittivity of the plurality of encapsulation thin films of the encapsulation layer 280, particularly the encapsulation thin films positioned below the touch sensing layer 400.

As described above, since at least one encapsulation thin film is positioned on the top and bottom of the touch sensing layer 400 included in the sealing layer 280 according to an embodiment of the present invention, moisture and moisture from the outside / or it can prevent the penetration of oxygen.

To protect the touch sensing layer 400 , at least one inorganic layer 280_1 and at least one organic layer 280_2 may be alternately stacked above the touch sensing layer 400 .

A part of the encapsulation thin film located on the upper part of the pad part 450 of the touch wiring included in the touch sensing layer 400 is removed to expose the pad part 450, and the touch controller 700 can be connected to the pad part 450. have.

The touch sensing layer 400 is formed by sequentially stacking an encapsulating thin film thereon, then stacking a touch electrode and a conductive material for a touch wire thereon by a method such as sputtering, and then patterning or printing to form a plurality of touch electrodes and a plurality of touch wires. can be formed and formed. Next, after stacking the remaining encapsulation thin film on the touch sensing layer 400 , the encapsulation thin film on the touch sensing layer 400 may be patterned to form a region from which the encapsulation thin film on the pad part 450 is removed. Alternatively, when the rest of the encapsulation thin film is stacked on the touch sensing layer 400, the encapsulation thin film may be stacked only on areas other than the pad portion 450 by using a mask.

Since the specific structure of the touch sensor included in the touch sensing layer 400 is the same as described above, a detailed description thereof will be omitted.

As described above, according to one embodiment of the present invention, since the touch sensing layer 400 including the touch sensing sensor is formed together in the process of forming the sealing layer 280, there is no need to separately manufacture and attach a touch panel and touch sensing. A manufacturing process of a flexible display device including a sensor may be simplified and manufacturing cost may be reduced. In addition, since a separate touch panel does not need to be attached to the display panel on which an image is displayed, the thickness of the flexible display device including the touch sensor can be reduced and light characteristics such as transmittance can be improved.

Since the contact detection sensor is included in the sealing layer 280, it is possible to prevent moisture or/and oxygen from penetrating into the contact detection sensor, thereby improving moisture resistance and reducing defects of the contact detection sensor due to metal corrosion. and can increase the bending durability of the flexible display device.

Since the touch electrodes included in the touch sensors are located on the same layer, deformation of the touch sensors when bending the display panel 300 can be reduced, defects can be prevented, and the thickness of the touch sensing layer 400 can be reduced. and can reduce the bending radius.

An antireflection layer 390 to reduce reflection of external light may be further positioned on the sealing layer 280 .

Now, a flexible display device according to an exemplary embodiment of the present invention will be described with reference to FIG. 7 along with FIGS. 1 to 6 described above.

7 is a cross-sectional view of a base film and a touch sensing layer of a flexible display device according to an exemplary embodiment.

Referring to FIG. 7 , the flexible display device according to an exemplary embodiment of the present invention is substantially the same as the flexible display device illustrated in FIGS. 1 to 6 described above, but the position of the touch sensing layer 400 may be different. The touch sensing layer 400 according to the present embodiment may be located on the upper surface of the second film 113, which is a flexible substrate, as shown in FIG. 7 (a) or located on the lower surface of the second film 113 as shown in FIG. 7 (b) can That is, the plurality of touch electrodes 410 and 420 constituting the touch sensor and the touch wires 411 and 421 connected thereto may be formed above or below the second film 113 .

The flexible display device according to an exemplary embodiment of the present invention may be a bottom emission type displaying an image by emitting internal light from the light emitting member 370 downward. In this case, the first film 112 and the barrier film 111 may have high transparency.

Effects according to this embodiment are the same as those of the previously described embodiment.

Then, a method of manufacturing the touch sensing layer 400 of the flexible display device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 8 to 12B together with the drawings described above.

8 to 12B are diagrams sequentially illustrating a manufacturing process of forming a touch sensor on or under a base film of a flexible display device according to an embodiment of the present invention. In particular, FIG. 9B is an intermediate product shown in FIG. 9A. is a cross-sectional view taken along line IX-IX, FIG. 10B is a cross-sectional view of the intermediate product shown in FIG. 10A taken along line X-X, and FIG. 11B is a cross-sectional view of the intermediate product shown in FIG. FIG. 12B is a cross-sectional view of the intermediate product shown in FIG. 12A taken along line XII-XII.

First, referring to FIG. 8 , a conductive layer is formed by laminating a conductive material on a second film 113 such as PET by a method such as sputtering. The conductive layer may include a first conductive layer 401 and a second conductive layer 403 sequentially stacked. The first conductive layer 401 may include a transparent conductive material such as ITO or IZO, and the second conductive layer 403 may include a metal material such as aluminum (Al).

9A and 9B, the first intermediate pattern 410P, the second intermediate pattern 420P, and the second connection pattern 422P are formed by patterning the first conductive layer 401 and the second conductive layer 403. ), and a first touch wire 411 and a second touch wire 421 connected to the first intermediate pattern 410P and the second intermediate pattern 420P. The shapes of the first intermediate pattern 410P and the second intermediate pattern 420P may be the same as those of the first touch electrode 410 and the second touch electrode 420 described above, respectively.

The second intermediate patterns 420P positioned in the same column may be positioned on the same layer as the second intermediate patterns 420P and may be connected to each other through a second connection pattern 422P patterned together. Unlike this, the first middle patterns 410P located in the same row may be connected to each other through a separate first connection pattern (not shown).

Referring to FIGS. 10A and 10B, the second conductive layer 402, which is an upper layer of the first intermediate pattern 410P, the second intermediate pattern 420P, and the second connection pattern 422P, is etched or the like. By removing them, a plurality of transparent first touch electrodes 410 , a plurality of second touch electrodes 420 , and a plurality of second connection parts 422 are formed. In contrast, when the first touch electrodes 410 arranged in the same column are connected by the first connection part 412 located on the same layer, the first connection part 412 may be formed instead of the second connection part 422 in this step.

The first touch wire 411 and the second touch wire 421 may still include both the first conductive layer 401 and the second conductive layer 403 to form a low-resistance wire.

Referring to FIGS. 11A and 11B , an insulating material is laminated and patterned on the first touch electrode 410 , the second touch electrode 420 , the second connection portion 422 , and the touch wire, and then formed on the second connection portion 422 . An insulating film 430 positioned and covering the second connection portion 422 and an insulating film 432 positioned on the touch wiring and covering the touch wiring are formed.

Referring to FIGS. 11A and 11B , a conductive material is laminated and patterned on an insulating film 430 to insulate and intersect the second connection portion 422 and connect adjacent first touch electrodes 410 in one row. 1 connection part 412 is formed.

Thus, the touch sensing layer 400 including the touch sensing sensor according to an embodiment of the present invention may be completed. In the manufacturing method of the touch sensing layer 400 according to the present embodiment, the touch sensing sensors are formed above and below the second film 113 as in the embodiments shown in FIGS. 1 to 5 and 7 described above. example can be applied.

The manufacturing method of the touch-sensing layer 400 according to this embodiment is equally applicable to the embodiment in which the touch-sensing layer 400 is located in the sealing layer 280 as in the embodiments shown in FIGS. 1 to 6 described above. can In this case, the second film 113 shown in FIGS. 8 to 12B may be replaced with any one inorganic film 280_1 of the sealing layer 280 .

Now, various structures of a touch sensor included in a flexible display device according to an exemplary embodiment will be described with reference to FIGS. 13 to 17 .

13 is a plan view of a touch sensor included in a flexible display device according to an exemplary embodiment, and FIG. 14 is a cross-sectional view of the touch sensor shown in FIG. 13 taken along line XIV-XIV. FIG. is a cross-sectional view of the touch sensor shown in FIG. 13 taken along the line XV-XV, and FIGS. 16 and 17 are plan views of the touch sensor included in the flexible display device according to one embodiment of the present invention.

Referring to FIG. 13 , the touch detection sensor according to this embodiment is mostly the same as the previous embodiment, but may further include a structure for protection from static electricity. The description will focus on differences from the embodiments shown in FIGS. 2 to 4 described above.

Adjacent first touch electrodes 410 positioned on the same row may be connected to each other by a first connector 412 that may be positioned on the same layer as the first touch electrode 410 . The first connection part 412 may be integrated with the first touch electrode 410 .

Referring first to FIGS. 13 and 14 , adjacent second touch electrodes 420 positioned in the same column may be connected to each other by a second connection portion 422 that may be positioned on a different layer from the second touch electrode 420 . have. The second touch electrode 420 and the second connection portion 422 may be connected to each other through direct contact. A plurality of second connectors 422 connecting the pair of second touch electrodes 420 connected to each other may be provided in plural numbers that are separated from each other. 13 illustrates an example in which a pair of second connection parts 422 connect adjacent second touch electrodes 420 .

An insulating film 430 is positioned between the first connection portion 412 and the second connection portion 422 to insulate the first connection portion 412 and the second connection portion 422 from each other. As shown in FIG. 13 , the insulating film 430 may be a plurality of independent island-shaped insulators disposed at each intersection of the first connection part 412 and the second connection part 422 . Alternatively, the insulating film 430 may be formed over the entire surface and may be removed to expose a portion of the second touch electrode 420 so that the second connection portion 422 is connected to the pair of connected second touch electrodes 420 . have.

The second connection portion 422 may be made of a transparent or low-resistance opaque conductive material such as metal. When the second connection portion 422 is made of a low-resistance, opaque metal material, it may be formed of the same layer in the same manufacturing process as the touch wires 411 and 421 of the peripheral area PA. In order to prevent the second connection portion 422 made of an opaque metal material of low resistance from being visible, its width may be limited or may be designed to be slanted in an oblique direction with respect to the horizontal direction. In this way, when the second connection portion 422 is designed to be narrow in consideration of visibility, defects may occur in the second connection portion 422 due to static electricity concentrated in an intersection area between the first connection portion 412 and the second connection portion 422 . have.

In order to prevent defects due to such static electricity, the touch electrode 410, which is island-shaped and belongs to a partial area of at least one of the first touch electrode 410 and the second touch electrode 420 according to an embodiment of the present invention, 420) and electrically insulated from each other, and disposed adjacent to an intersection area between the first touch electrode 410 and the second touch electrode 420, dummy patterns 418, 419, 428, and 429 may be formed. For example, as shown in FIG. 13 , a first dummy pattern 418 spaced apart from an edge and a second dummy pattern 419 in contact with the edge may be formed in a partial area of the first touch electrode 410, A first dummy pattern 428 spaced apart from an edge and a second dummy pattern 429 contacting the edge may be formed in a partial area of the second touch electrode 420 .

The dummy patterns 418, 419, 428, and 429 reduce the width of the electrical movement path by forming a blocking region (insulation region) on the electrical movement path of each of the first touch electrode 410 or the second touch electrode 420. By increasing the length of the path, electrical resistance on the movement path can be increased to prevent sudden inflow of static electricity into the high-resistance area that is the intersection area of the first and second touch electrodes 410 and 420 .

Referring to FIG. 13 , the dummy patterns 418 and 428 may be spaced apart from the edges of the touch electrodes 410 and 420 to which they belong. The dummy patterns 419 and 429 may contact edges of the touch electrodes 410 and 420 to which they belong. When positively charged static electricity flows into the dummy patterns 418 and 428 , negative charges are charged on the surface of the dummy patterns 418 and 428 to attract the positive charges of static electricity and alleviate the shock caused by static electricity flowing into the second connector 422 . can make it The dummy patterns 419 and 429 serve to extend and detour the electrical movement path so that the introduced static electricity does not rapidly flow into the intersection area of the first and second touch electrodes 410 and 420 .

The dummy patterns 418, 419, 428, and 429 may be positioned on the same layer as the first and second touch electrodes 410 and 420 and may be made of the same material.

The dummy patterns 418 , 419 , 428 , and 429 may be disposed with the same size in areas symmetrical to each other around the intersection area of the first and second touch electrodes 410 and 420 . For example, the first and second dummy patterns 418 and 419 of the first touch electrode 410 are disposed in areas symmetrical to each other with the first connection part 412 as the center and have the same size, and the second touch electrode ( The first and second dummy patterns 428 and 429 of 420 may be disposed in the same size in areas symmetrical to each other around the second connection part 422 .

The dummy patterns 418 , 419 , 428 , and 429 may have a bent shape to form an electrical movement path within the touch electrodes 410 and 420 . For example, in the second touch electrode 420, the second dummy pattern 429 is positioned at the edges of both sides, and the first dummy pattern 428 is bent in an L shape between the second dummy patterns 429. can be located.

The shapes and positions of the dummy patterns 418, 419, 428, and 429 are not limited to those shown and may be variously changed.

The second touch electrode 420 may have a protrusion pattern 427 that protrudes toward the adjacent first touch electrode 410 and is connected to the second connection portion 422 . The protruding pattern 427 prevents abrupt inflow of static electricity into the relatively narrow second connection portion 422 and electrically moves the touch electrodes 410 and 420 together with the dummy patterns 418, 419, 428 and 429. path can be modified. A plurality of protruding patterns 427 may be provided on one second touch electrode 420, and are parallel to each other in opposite directions from the second touch electrodes 420 to which they are connected between adjacent second touch electrodes 420. can be extended appropriately.

13 shows an example in which the protruding patterns 427 protrude from the second touch electrodes 420 separated from each other and are connected to the second connection portion 422, but unlike the first touch electrodes 410 adjacent to each other, The first touch electrodes 410 may be connected to each other through the first connection part 412 located on a different layer. In this case, the first touch electrode 410 may be connected to the first connection part 412 through a protrusion pattern (shown). do not) may have.

Referring to FIGS. 13 and 15 , the touch detection sensor according to an embodiment of the present invention may further include a plurality of static electricity induction patterns 490 . The static electricity induction pattern 490 is electrically connected to any one of the first and second touch electrodes 410 and 420, and each of the touch electrodes 410 and 420 to which they are connected and the touch electrodes 410 and 420 adjacent thereto are connected. The touch electrodes 410 and 420 are extended in a direction so that a partial area overlaps with the adjacent touch electrodes 410 and 420 . The static electricity induction pattern 490 may be connected to one of the touch electrodes 410 and 420 through direct contact. In contrast, the static electricity induction pattern 490 is located on the upper or lower layer of the touch electrodes 410 and 420 to which it connects and penetrates the touch electrodes 410 and 420 through contact holes (not shown) formed in the insulating film 434. ) and electrically connected.

Here, an insulating film 434 may be interposed between the touch electrodes 410 and 420 overlapping without being electrically connected to the static electricity induction pattern 490 to secure insulation.

The static electricity induction pattern 490 may be formed of the same material as the second connector 422 and on the same layer to simplify the process. The static electricity induction pattern 490 may be formed of a low-resistance opaque metal material like the touch wires 411 and 421 .

When static electricity is induced toward the static electricity induction pattern 490, the stability of the first and second connectors 412 and 422 can be secured, and even if damage such as disconnection is applied to the static electricity induction pattern 490, this is the damage of the touch sensor. Doesn't affect drive.

Referring next to FIG. 16, the touch sensor according to this embodiment does not have the second dummy patterns 419 and 429 and the static electricity induction pattern 490 of the touch sensor shown in FIGS. 13 to 15 described above, and the first dummy pattern 490. It may include only the patterns 418 and 428 and the protruding pattern 427 .

The first touch electrode 410 may include a plurality of first dummy patterns 418 , and the second touch electrode 420 may include a plurality of first dummy patterns 428 and a protrusion pattern 427 . The first dummy pattern 428 and the protruding pattern 427 may have a shape bent in an L shape.

The bent protrusion pattern 427 may increase the length of an electrical movement path between the second touch electrodes 420 .

Referring to FIG. 17, the touch sensor according to the present embodiment has first dummy patterns 418 and 428 without the protruding pattern 427 and the static electricity induction pattern 490 of the touch sensor shown in FIGS. 13 to 15 described above. ) and the second dummy patterns 419 and 429.

The first touch electrode 410 includes a plurality of first dummy patterns 418, the second touch electrode 420 is electrically connected by a single second connection portion 422 without a protruding pattern, and the first dummy pattern The pattern 428 and the second dummy pattern 429 may be included one by one. The first connection part 412 and the second connection part 422 may be designed to be slanted in an oblique direction.

The number, shape, and location of these various dummy patterns, protruding patterns, and static electricity induction patterns can be variously combined and modified in various ways as needed.

Next, a flexible display device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 18 and 19 .

FIG. 18 is a plan view illustrating a touch sensor and a ground wire of the flexible display device according to an exemplary embodiment, and FIG. 19 is an enlarged view of a portion of the flexible display device illustrated in FIG. 18 .

The flexible display device according to this embodiment is the same as the above-described embodiment, but may further include a ground wire 60 positioned in the peripheral area PA.

The ground wire 60 may be positioned outside the touch wires 411 and 421 . The ground wire 60 may be formed along the edge of the display panel 300 to surround the touch wires 411 and 421 . For example, the ground wire 60 may have a substantially rectangular shape.

The ground wire 60 may be electrically connected to a ground power source to remove static electricity introduced from the outside. To this end, the ground wire 60 may be electrically connected to the ground power source through a pad included in the pad unit 450 .

Referring to FIG. 19 , the ground wire 60 includes at least one static electricity induction part 70 . The static electricity induction part 70 may be more densely formed in a corner region of the ground wire 60 than in a non-corner region.

The static electricity induction unit 70 may include a plurality of static electricity induction patterns 71 , 72 , 73 , 74 , and 75 . The static electricity induction patterns 71, 72, 73, 74, and 75 may protrude from the ground wire 60 and extend outward from the ground wire 60 to induce static electricity flowing from the outside. can

The static electricity induction patterns 71, 72, 73, 74, and 75 may have a lightning rod shape to induce external static electricity. Also, in order to improve the electrostatic induction effect, at least one of the electrostatic induction patterns 71 , 72 , 73 , 74 , and 75 may have a concave-convex portion 77 formed thereon. For example, concavo-convex portions 77 may be formed on the static electricity induction patterns 71 and 75. The number of static electricity induction patterns 71, 72, 73, 74, and 75 shown in FIG. 19 may vary. In addition, the lengths of the static electricity induction patterns 71, 72, 73, 74, and 75 may be different or the same.

The static electricity induction patterns 71 , 72 , 73 , 74 , and 75 may be integrally formed with the ground wire 60 .

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concept of the present invention defined in the following claims are also made according to the present invention. falls within the scope of the rights of

111: barrier film 112: first film
113: second film 124b: control electrode
140: gate insulating film 154b: semiconductor
171: data line 180a, 180b: protective film
191: pixel electrode 270: counter electrode
280: sealing layer 300: display plate
360: pixel defining layer 370: light emitting member
371, 375 organic common layer 373 light emitting layer
390: antireflection layer 400: contact sensing layer
410, 420: touch electrode 411, 421: touch wiring
412, 422: connection part 418, 419, 428, 429: dummy pattern
427: protrusion pattern 430, 432, 434: insulating film
450: pad part 490: static electricity induction pattern
600: display control unit 700: touch control unit

Claims (42)

flexible substrate,
A light emitting layer positioned on the flexible substrate, and
A plurality of layers positioned on the light emitting layer and a touch sensor for sensing a touch input
including,
The first layer located at the bottom of the plurality of layers has a first lower surface located on the light emitting layer and a second lower surface connected to the first lower surface,
a first distance between the first lower surface and the upper surface of the flexible substrate is different from a second distance between the second lower surface and the upper surface of the flexible substrate;
The plurality of layers include at least one inorganic layer and at least one organic layer,
The touch sensing unit is located between one of the at least one inorganic layer and one of the at least one organic layer adjacent to each other among the plurality of layers.
flexible display device. In paragraph 1,
The flexible display device of claim 1 , wherein the touch sensing unit includes a pad, and at least one of the plurality of layers positioned on the touch sensing unit exposes the pad. In paragraph 2,
The flexible display device of claim 1 , wherein the touch sensing unit includes a plurality of touch electrodes positioned on the same layer. In paragraph 3,
Further comprising a plurality of touch wires electrically connected to the plurality of touch electrodes,
The pad portion includes an end portion of the touch wire
flexible display device. In paragraph 4,
The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes spaced apart from each other and alternately arranged without overlapping,
The plurality of first touch electrodes are arranged in a first direction and connected to each other through a plurality of first connection parts;
The plurality of second touch electrodes are arranged in a second direction crossing the first direction and connected to each other through a plurality of second connection parts.
flexible display device. In paragraph 5,
The flexible display device further includes an insulating layer positioned between the first connection part and the second connection part. In paragraph 6,
The first connection part is located on the same layer as the first touch electrode and is integrated with the first touch electrode;
The second connection part is located on a different layer from the second touch electrode.
flexible display device. In paragraph 7,
The second connection part is positioned on the insulating layer. In paragraph 8,
Each of the touch electrodes includes at least one of a dummy pattern, a protrusion pattern, and an electrostatic induction pattern. In paragraph 3,
At least one of the at least one inorganic layer and at least one of the at least one organic layer are positioned on the touch sensing unit. In paragraph 10,
The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes spaced apart from each other and alternately arranged without overlapping,
The plurality of first touch electrodes are arranged in a first direction and connected to each other through a plurality of first connection parts;
The plurality of second touch electrodes are arranged in a second direction crossing the first direction and connected to each other through a plurality of second connection parts.
flexible display device. In paragraph 1,
Further comprising a counter electrode positioned on the light emitting layer,
The plurality of layers are located directly on the opposite electrode
flexible display device. first film,
a thin film transistor on the first film;
a light emitting layer on the thin film transistor;
a plurality of layers over the light emitting layer, and
A touch sensing unit located directly on the upper or lower surface of the first film.
including,
The light emitting layer is located between the touch sensing unit and the plurality of layers, the light emitting layer emits light toward the first film, and the thin film transistor is located between the light emitting layer and the touch sensing unit.
flexible display device. In paragraph 13,
The flexible display device of claim 1 , wherein the touch sensing unit includes a plurality of touch electrodes positioned on the same layer. In paragraph 14,
The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes spaced apart from each other and alternately arranged without overlapping,
The plurality of first touch electrodes are arranged in a first direction and connected to each other through a plurality of first connection parts;
The second touch electrodes are arranged in a second direction crossing the first direction and connected to each other through a plurality of second connection parts.
flexible display device. In paragraph 15,
The flexible display device further includes an insulating layer positioned between the first connection part and the second connection part. In clause 16,
The first connection part is located on the same layer as the first touch electrode and is integrated with the first touch electrode;
The second connection part is located on a different layer from the second touch electrode.
flexible display device. In paragraph 17,
The second connection part is positioned on the insulating layer. In paragraph 18,
The second connection part is at least partially formed of a low-resistance, opaque conductive material. In paragraph 17,
The plurality of touch electrodes include at least one of a dummy pattern, a protrusion pattern, and an electrostatic induction pattern. In paragraph 13,
Further comprising a second film positioned between the first film and the light emitting layer,
The second film is at least partially formed of polyimide (PI)
flexible display device. flexible substrate,
A plurality of pixels on the flexible substrate;
A plurality of layers located on the plurality of pixels and including a plurality of organic layers and inorganic layers alternately arranged; and
Touch sensor detecting touch input
including,
At least one of the plurality of organic layers and inorganic layers is located between the touch sensing unit and the plurality of pixels;
The plurality of organic layers and inorganic layers include at least one layer positioned on the touch sensing unit,
The touch sensing part includes a pad part that does not overlap with at least one layer.
flexible display device. In paragraph 22,
The touch sensing unit includes a plurality of first touch electrodes and a plurality of second touch electrodes spaced apart from each other,
The plurality of first touch electrodes are arranged in a first direction and electrically connected to each other through a plurality of first connection portions;
The plurality of second touch electrodes are arranged in a second direction crossing the first direction and electrically connected to each other through a plurality of second connectors.
flexible display device. In paragraph 23,
The touch sensing unit further includes a plurality of static electricity induction patterns positioned between first and second touch electrodes adjacent to each other among the plurality of first touch electrodes and the plurality of second touch electrodes;
Each of the static electricity induction patterns is electrically connected to one of the neighboring first and second touch electrodes and electrically insulated from the others.
flexible display device. flexible substrate,
A light emitting member positioned on the flexible substrate;
A plurality of layers located on the light emitting member, and
Touch detection unit including a touch detection sensor
including,
The plurality of layers include at least one inorganic layer and at least one organic layer,
The touch sensing unit is located between the inorganic layer and the organic layer adjacent to each other,
The plurality of layers include a first portion corresponding to the light emitting member and a second portion not corresponding to the light emitting member,
The distance between the bottom surface of the lowermost layer of the at least one inorganic layer and the at least one organic layer included in the plurality of layers and the flexible substrate in the first portion is the distance of the lowermost layer smaller than the distance between the bottom surface in the second portion and the flexible substrate;
Among the plurality of layers, a first layer positioned directly on the touch sensing unit has an opening exposing the pad of the touch sensing unit without covering it.
display device. In paragraph 25,
The touch sensor includes a plurality of touch electrodes positioned on the same layer. In paragraph 26,
Further comprising a touch wire connected to the touch electrode,
An end of the touch wire forms the pad portion exposed by the opening. In paragraph 27,
The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are separated from each other and are alternately disposed without overlapping each other;
The plurality of first touch electrodes arranged in a first direction are connected to each other by a plurality of first connection parts;
The plurality of second touch electrodes arranged in a second direction different from the first direction are connected to each other by a plurality of second connectors. In paragraph 28,
and an insulating layer positioned between the first connection part and the second connection part and insulating the first connection part from the second connection part. In paragraph 29,
The first connection part is located on the same layer as the first touch electrode and is integrated with the first touch electrode;
The second connection part is located on a different layer from the second touch electrode. In paragraph 30,
The second connection part is positioned on the insulating layer. In paragraph 31,
The touch electrode includes at least one of a dummy pattern for protection from static electricity, a protrusion pattern, and an static electricity induction pattern. In paragraph 26,
At least one inorganic layer and at least one organic layer alternately stacked among the plurality of layers are positioned on the touch sensing unit. In paragraph 33,
The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are separated from each other and are alternately disposed without overlapping each other;
The plurality of first touch electrodes arranged in a first direction are connected to each other by a plurality of first connection parts;
The plurality of second touch electrodes arranged in a second direction different from the first direction are connected to each other by a plurality of second connectors. A first film comprising polyimide,
A light emitting member positioned on the first film,
one or more layers positioned over the light emitting member;
A second film formed on the lower surface of the first film and containing polyethylene terephthalate (PET), and
A touch sensing unit formed directly on the lower surface of the second film,
The light emitting member emits light toward the second film. In paragraph 35,
The touch sensor includes a plurality of touch electrodes positioned on the same layer. In paragraph 36,
The plurality of touch electrodes include a plurality of first touch electrodes and a plurality of second touch electrodes that are separated from each other and are alternately disposed without overlapping each other;
The plurality of first touch electrodes arranged in a first direction are connected to each other by a plurality of first connection parts;
The plurality of second touch electrodes arranged in a second direction different from the first direction are connected to each other by a plurality of second connectors. In paragraph 37,
and an insulating layer positioned between the first connection part and the second connection part and insulating the first connection part from the second connection part. In paragraph 38,
The first connection part is located on the same layer as the first touch electrode and is integrated with the first touch electrode;
The second connection part is located on a different layer from the second touch electrode. In paragraph 39,
The second connection part is positioned on the insulating layer. In paragraph 40,
The second connection part includes a low-resistance, opaque conductive material. In paragraph 39,
The touch electrode includes at least one of a dummy pattern for protection from static electricity, a protrusion pattern, and an static electricity induction pattern.

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