KR20170088474A - Flexible display device - Google Patents

Abstract

The present invention is to provide a flexible display with improved touch sensitivity. A flexible display according to the present invention includes a display panel providing a base surface and a touch screen disposed on the base surface. The touch screen includes a noise shielding conductive layer disposed on the base surface and overlapping with a non-emission region, a first insulating layer covering the noise shielding conductive layer, first conductive patterns overlapping with a part of the noise shielding conductive layer, a second insulating layer disposed on the first insulating layer, second conductive patterns disposed on the second insulating layer and overlapping with a part of the noise shielding conductive layer, and a third insulating layer disposed on the second insulating layer.

Description

[0001] FLEXIBLE DISPLAY DEVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible display device, and more particularly, to a touch screen integrated flexible display device.

Electronic devices such as smart phones, digital cameras, notebook computers, navigation systems, and smart TVs are being developed. Such electronic devices have a display device for providing information.

As electronic devices have changed in various forms, they have been correspondingly changed in the form of display devices. Conventional electronic devices have flat panel display devices. Recently developed electronic devices require flexible display devices such as curved, bendable, and rolling.

Others require slimmer electronic devices. To realize this, various functional members are integrated into a display device.

Accordingly, it is an object of the present invention to provide a flexible display device having a touch screen with improved touch sensitivity.

A flexible display device according to an embodiment of the present invention includes a display panel that provides a base surface and includes a plurality of light emitting regions and a non-emitting region adjacent to the plurality of light emitting regions, and a touch panel .

The touch screen includes a noise shielding conductive layer disposed on the base surface and overlapping the non-emission region, a first insulating layer disposed on the base surface and covering the noise shielding conductive layer, And a second insulating layer disposed on the first insulating layer, the second insulating layer being disposed on the second insulating layer and being disposed on a portion of the noise-shielding conductive layer, And a third insulating layer disposed on the second insulating layer.

The first insulating layer may include a first overcoat layer providing a first flat surface on which the first conductive patterns are disposed.

The second insulating layer may include a plurality of color filters each overlapping a corresponding one of the plurality of light emitting regions.

The edges of each of the plurality of color filters may overlap the non-emission region.

The second insulating layer may further include a second overcoat layer covering the plurality of color filters and providing a second flat surface on which the second conductive patterns are disposed.

The second insulating layer may further include a black matrix disposed on the first flat surface and covering the first conductive patterns and defining openings corresponding to the plurality of light emitting regions.

The third insulating layer covers the second conductive patterns and openings corresponding to the plurality of light emitting regions may be defined.

The first insulating layer may include a plurality of color filters each of which overlaps a corresponding one of the plurality of light emitting regions.

The second insulating layer may include an overcoat layer providing a flat surface on which the second conductive patterns are disposed.

The second insulating layer may further include a black matrix disposed on the plurality of color filters and covering the first conductive patterns and defining openings corresponding to the plurality of light emitting regions. The overcoat layer may cover the black matrix.

At least one of the first insulating layer, the second insulating layer, and the third insulating layer may include a hard coating layer.

The noise shielding conductive layer may include first mesh lines defining first openings corresponding to the plurality of light emitting regions. The first conductive patterns may include second mesh lines defining second openings corresponding to the plurality of light emitting regions. And the line width of the first mesh lines is larger than the line width of the second mesh lines.

A window member disposed on the touch screen, and a transparent optical adhesive member coupling the window member and the touch screen. The window member may include a base member and a hard coating layer disposed on the base member.

The noise shielding conductive layer may receive a ground voltage.

The display panel may include a base substrate, a circuit layer disposed on the base substrate, an organic light emitting element layer disposed on the circuit layer, and a thin film encapsulation layer sealing the organic light emitting element layer. The thin film encapsulation layer may provide the base surface.

A flexible display device according to an exemplary embodiment of the present invention is provided with a base surface and is defined as a plurality of light emitting regions and a non-light emitting region adjacent to the plurality of light emitting regions, and is disposed over the non- A display panel including a noise shielding conductive layer formed on the base substrate and a transparent optical bonding member for bonding the base substrate and the touch screen, and a touch screen disposed on the noise shielding conductive layer.

The touch screen includes a base member, first conductive patterns disposed on the base member and overlapping a noise shielding conductive layer of a part of the noise shielding conductive layer, and a second conductive pattern disposed on the base member, A second insulating layer disposed on the second insulating layer and covering the noise shielding conductive layer of the noise shielding conductive layer; and a second insulating layer disposed on the first insulating layer, Layer.

One of the first insulating layer and the second insulating layer may include a plurality of color filters overlapping a corresponding one of the plurality of light emitting regions.

At least one of the first insulating layer and the second insulating layer may include a black matrix in which openings corresponding to the plurality of light emitting regions are defined.

Each of the noise shielding conductive layer, the first conductive patterns, and the second conductive patterns may have a mesh shape in which openings corresponding to the plurality of light emitting regions are defined.

According to the above description, since the noise shielding conductive layer is superimposed on the first conductive patterns and the second conductive patterns, the noise generated from the display panel can be prevented from interfering with the first conductive patterns and the second conductive patterns.

Since the touch electrodes have a mesh shape, tensile stress / compression stress applied to the touch electrodes is reduced, and as a result, cracks of the touch electrodes can be prevented.

The color filters reduce the external and reflectance by filtering the external light. The display device is made slimmer because the insulating layer of the touch screen includes color filters.

1A is a perspective view illustrating a first operation of a flexible display device according to an embodiment of the present invention.
1B is a perspective view illustrating a second operation of the flexible display device according to an embodiment of the present invention.
2A is a cross-sectional view of a flexible display device according to a first embodiment of the present invention.
FIG. 2B is a cross-sectional view illustrating a second operation of the flexible display device according to the embodiment of the present invention.
2C to 2E are cross-sectional views illustrating a first operation of the flexible display device according to an embodiment of the present invention.
3 is a perspective view of a flexible display panel according to an embodiment of the present invention.
4 is an equivalent circuit diagram of a pixel according to an embodiment of the present invention.
5 is a partial plan view of an organic light emitting display panel according to an embodiment of the present invention.
6A and 6B are partial cross-sectional views of an OLED display panel according to an exemplary embodiment of the present invention.
7A through 7C are cross-sectional views of a thin film encapsulation layer according to an embodiment of the present invention.
8A and 8D are cross-sectional views of a display device according to an embodiment of the present invention.
9A and 9B are plan views of conductive layers of a touch screen according to an embodiment of the present invention.
9C and 9D are top views of a noise shielding conductive layer of a touch screen according to an embodiment of the present invention.
FIG. 10A is a partially enlarged view of the area AA in FIG. 9A. FIG.
10B through 10J are partial cross-sectional views of FIG. 10A according to an embodiment of the present invention.
11A is a partial enlarged view of the BB area of FIG. 9B.
11B is a partial cross-sectional view of FIG. 11A according to an embodiment of the present invention.
12A is a partial enlarged view of the CC region in Figs. 9A and 9B.
12B is a partial cross-sectional view of Fig. 12A.
13A and 13B are top views of conductive layers of a touch screen according to an embodiment of the present invention.
13C is a partially enlarged view of the CC region in Figs. 13A and 13B.
13D is a partial cross-sectional view of Fig.
14A and 14B are plan views of conductive layers of a touch screen according to an embodiment of the present invention.
15A is a partially enlarged view of the DD area in Figs. 14A and 14B. Fig.
15B is a partially enlarged view of Fig. 15A.
15C and 15D are partial cross-sectional views of Fig. 15A.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification, when it is mentioned that any element (or region, layer, portion, etc.) is "on", "connected", or "coupled" to another element, Connected / coupled, or a third component may be disposed therebetween.

Like reference numerals refer to like elements. Also, in the drawings, thickness, ratio, and dimensions of components are exaggerated for an effective description of the technical content. &Quot; and / or " include all combinations of one or more of which the associated configurations can define.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The singular expressions include plural expressions unless the context clearly dictates otherwise.

Also, terms such as " below ", " below ", " above ", " above ", and the like are used to describe the relationship of the configurations shown in the drawings. The terms are described relative to the direction shown in the figure in a relative concept.

It will be understood that terms such as "comprise" or "comprise ", when used in this specification, specify the presence of stated features, integers, , &Quot; an ", " an ", " an "

1A is a perspective view of a first operation of a flexible display device DD according to an embodiment of the present invention. 1B is a perspective view illustrating a second operation of the flexible display device DD according to an exemplary embodiment of the present invention. 2A is a cross-sectional view of a flexible display device DD according to a first embodiment of the present invention. FIG. 2B is a cross-sectional view of a flexible display device DD according to a second embodiment of the present invention. FIGS. 2C to 2E are cross-sectional views of the flexible display devices DD-1 to DD-3 according to the first embodiment of the present invention.

The display surface IS on which the image IM is displayed is parallel to the plane defined by the first directional axis DR1 and the second directional axis DR2. The third direction axis DR3 indicates the normal direction of the display surface IS, that is, the thickness direction of the flexible display device DD. The front and back surfaces of the members are separated by a third directional axis DR3. However, the directions indicated by the first to third direction axes DR1, DR3, DR3 can be converted into different directions as relative concepts. Hereinafter, the first to third directions refer to the same reference numerals in the directions indicated by the first to third direction axes DR1, DR3, and DR3, respectively.

1A and 2B show a folder display device as an example of the flexible display device DD. However, the present invention is not limited to this, and the flexible display device DD may be a curved flexible display device having a predetermined curvature or a rolled flexible display device. Although not shown separately, the flexible display device DD of the present invention can be used for a large-sized electronic device such as a television, a monitor, etc., and a small-sized electronic device such as a mobile phone, a tablet, a car navigation system, a game machine,

As shown in FIG. 1A, the display surface IS of the flexible display device DD may be divided into a plurality of areas. The flexible display device DD includes a display area DD-DA where an image IM is displayed, and a non-display area DD-NDA adjacent to the display area DD-DA. The non-display area (DD-NDA) is an area where no image is displayed. In Fig. 1A, a vase is shown as an example of the image IM. As an example, the display area DD-DA may be rectangular. The non-display area DD-NDA can surround the display area DD-DA. However, the shape of the display area DD-DA and the shape of the non-display area DD-NDA can be relatively designed, without being limited thereto.

1A and 1B, the display device DD includes a bending area BA bending on the basis of a bending axis BX, a first unbending bending area NBA1, , And a second non-bending area (NBA2). Bending can be performed so that the display surface IS of the first non-bending region NBA1 faces the display surface IS of the second non-bending region NBA2. The display device DD may be outer-bending such that the display surface IS is exposed to the outside according to a user's operation.

In an embodiment of the present invention, the display device DD may include a plurality of bending areas BA. In addition, a bending area BA may be defined corresponding to the manner in which the user operates the display device DD. For example, unlike FIG. 1B, the bending area BA may be defined parallel to the first directional axis DR1 and may be defined diagonally. The area of the bending area BA is not fixed but can be determined according to the bending radius BR (see Fig. 2B).

As shown in Figs. 2A and 2B, the display device DD may include a display panel DP, a touch screen TS, and a window member WM. Each of the display panel DP, the touch screen TS, and the window member WM may have a flexible property. Although not separately shown, the display device DD may further include a protective member coupled with the window member WM to protect the display panel DP and the touch screen TS.

The display panel DP generates an image IM (see Fig. 1A) corresponding to the input image data. The display panel DP may be an organic light emitting display panel, an electrophoretic display panel, an electrowetting display panel or the like, and the kind thereof is not limited. An organic light emitting display panel is exemplarily described in the present invention. A detailed description of the organic light emitting display panel will be described later.

The touch screen (TS) acquires the coordinate information of the external input. The touch screen TS is disposed on the base surface provided by the display panel DP. In this embodiment, the touch screen (TS) can be manufactured by a continuous process with the display panel.

The touch screen (TS) may be a capacitive touch screen. However, the present invention is not limited thereto, and can be replaced with another type of touch screen including two types of touch electrodes, such as an electromagnetic induction method.

In this embodiment, the touch screen TS reduces external light reflection. As described below, the touch screen TS includes color filters. The color filters of the touch screen (TS) can replace optical films such as polarizing films and? / 4 wavelength films that prevent reflection of external light.

The window member WM may be coupled with the touch screen TS by means of an optically clear adhesive (OCA). The window member WM includes a base member WM-BS and a bezel layer WM-BZ. The base member (WM-BS) may include a plastic film or the like. The bezel layer (WM-BZ) partially overlaps the base member (WM-BS). The bezel layer WM-BZ may be disposed on the back surface of the base member WM-BS to define a bezel area of the display device DD, that is, a non-display area NDA (see FIG. 1A).

The bezel layer (WM-BZ) can be formed as a colored organic layer, for example, by a coating method. Although not shown separately, the window member WM may further include a functional coating layer disposed on the front surface of the base member WM-BS. The functional coating layer may include a hard coating layer, an anti-fingerprint layer, an anti-reflection layer, and the like.

FIGS. 2C to 2E show the flexible display devices DD-1 to DD-3 according to another embodiment and the flexible display devices shown in FIGS. 2A and 2B.

As shown in Fig. 2C, the window member WM may be omitted. The window member WM may be integrated into the touch screen TS. At this time, the touch screen (TS) includes at least a hard coat layer to increase the surface strength.

As shown in Figs. 2D and 2E, the touch screen TS can be combined with the display panel DP by a transparent optical adhesive member (OCA).

3 is a perspective view of a flexible display panel DP according to an embodiment of the present invention. 4 is an equivalent circuit diagram of a pixel PX according to an embodiment of the present invention. Hereinafter, the flexible display panel DP is described as an organic light emitting display panel DP. The organic light emitting display panel DP includes a display area DA and a non-display area NDA on a plane. The display area DA and the non-display area NDA of the organic light emitting display panel DP are divided into the display area DD-DA and the non-display area DD of the display device DD defined by the bezel layer WM- DD-NDA), and may be changed according to the structure / design of the organic light emitting display panel DP.

As shown in FIG. 3, the organic light emitting display panel DP includes a plurality of pixels PX arranged in the display area DA. A plurality of pixels PX arranged in a matrix form are shown, but are not limited thereto. The plurality of pixels PX may be arranged in a non-matrix form, for example, a penta form.

In FIG. 4, an equivalent circuit of one pixel PXij connected to the i-th scan line SLi and the j-th source line DLj is illustratively shown. Although not shown separately, the plurality of pixels PX may have the same equivalent circuit.

The pixel PXij includes at least one transistor TR1 and TR2, at least one capacitor Cap, and an organic light emitting diode OLED. Although the pixel driving circuit including two transistors TR1 and TR2 and one capacitor Cap is exemplarily illustrated in this embodiment, the configuration of the pixel driving circuit is not limited thereto.

The anode of the organic light emitting diode OLED receives the first power supply voltage ELVDD applied to the power supply line PL through the second transistor TR2. The cathode of the organic light emitting diode OLED receives the second power supply voltage ELVSS. The first transistor TR1 outputs a data signal applied to the jth source line DLj in response to a scan signal applied to the ith scan line SLi. The capacitor Cap charges the voltage corresponding to the data signal received from the first transistor TR1. The second transistor TR2 controls the driving current flowing in the organic light emitting element OLED in response to the voltage stored in the capacitor Cap.

5 is a partial plan view of an organic light emitting display panel DP according to an embodiment of the present invention. 6A and 6B are partial cross-sectional views of an organic light emitting display panel DP according to an embodiment of the present invention. Fig. 5 shows a part of the display area DA (see Fig. 3). 6A shows a cross section of a portion corresponding to the first transistor TR1 and the capacitor Cap of the equivalent circuit shown in FIG. 4, FIG. 6B shows a cross section of the second transistor TR2 of the equivalent circuit shown in FIG. Sectional view of a portion corresponding to the organic light emitting device OLED.

5, the organic light emitting display panel DP includes a plurality of light emitting regions PXA-R, PXA-G, and PXA-G on a plane defined by a first direction axis DR1 and a second direction axis DR2, PXA-B) and a non-emission region (NPXA). FIG. 5 exemplarily shows three types of light emitting regions (PXA-R, PXA-G and PXA-B) arranged in a matrix form. The organic light emitting elements emitting three different colors may be disposed in each of the three types of light emitting regions PXA-R, PXA-G, and PXA-B.

In one embodiment of the present invention, organic light emitting devices emitting white colors may be disposed on the three types of light emitting regions PXA-R, PXA-G, and PXA-B, respectively. At this time, three types of color filters of different colors can be superimposed on the three types of light emitting regions PXA-R, PXA-G and PXA-B, respectively.

The non-emission area NPXA includes a first non-emission area NPXA-1 and a first non-emission area NPXA-1 surrounding the emission areas PXA-R, PXA-G and PXA- And a second non-emission area NPXA-2 defining a boundary. (For example, transistors TR1 and TR2, see FIG. 4) or a capacitor Cap (see FIG. 4) of the sub pixels corresponding to the first non-light emitting regions NPXA-1. (See FIG. 4), a source line DLj (see FIG. 4), and a power source line PL (see FIG. 4) may be disposed in the second non-emission region NPXA- . However, the present invention is not limited thereto, and the first non-light emitting regions NPXA-1 and the second non-light emitting region NPXA-2 may not be distinguished from each other.

According to an embodiment of the present invention, each of the light emitting regions PXA-R, PXA-G, and PXA-B may have a rhombic shape. According to an embodiment of the present invention, organic light emitting elements emitting four different colors may be arranged in each of the four types of light emitting regions arranged repeatedly.

The term "emitting light of a predetermined color in the light emitting region" in this specification means not only emitting light generated in the corresponding light emitting element as it is, but also converting and emitting the color of light generated in the corresponding light emitting element .

6A and 6B, the organic light emitting display panel DP includes a base substrate SUB, a circuit layer DP-CL, an organic light emitting element layer DP-OLED, and a thin film encapsulation layer (TFE) . The circuit layer DP-CL may include a plurality of conductive layers and a plurality of insulating layers, and the organic light emitting device layer DP-OLED may include a plurality of conductive layers and a plurality of functional organic layers. The thin film encapsulation layer (TFE) may comprise a plurality of organic layers and / or a plurality of inorganic layers.

The base substrate SUB is a flexible substrate, and may include a plastic substrate such as polyimide, a glass substrate, a metal substrate, or the like. The semiconductor pattern AL1 (hereinafter referred to as a first semiconductor pattern) of the first transistor TR1 and the semiconductor pattern AL2 (hereinafter referred to as a second semiconductor pattern) of the second transistor TR2 are disposed on the base substrate SUB. The first semiconductor pattern AL1 and the second semiconductor pattern AL2 may include amorphous silicon formed at a low temperature. In addition, the first semiconductor pattern AL1 and the second semiconductor pattern AL2 may include a metal oxide semiconductor. Although not separately shown, the functional layers may be further disposed on one surface of the base substrate SUB. The functional layers comprise at least one of a barrier layer or a buffer layer. The first semiconductor pattern AL1 and the second semiconductor pattern AL2 may be disposed on the barrier layer or the buffer layer.

The first insulating layer 12 covering the first semiconductor pattern AL1 and the second semiconductor pattern AL2 is disposed on the base substrate SUB. The first insulating layer 12 includes an organic layer and / or an inorganic layer. In particular, the first insulating layer 12 may include a plurality of inorganic thin films. The plurality of inorganic thin films may include a silicon nitride layer and a silicon oxide layer.

A control electrode GE1 (hereinafter referred to as a first control electrode) and a control electrode GE2 (hereinafter referred to as a second control electrode) of the second transistor TR2 are disposed on the first insulating layer 12 do. A first electrode E1 of a capacitor Cap is disposed on the first insulating layer 12. [ The first control electrode GE1, the second control electrode GE2 and the first electrode E1 can be manufactured according to the same photolithography process as the scan line SLi (see FIG. 4). In other words, the first electrode E1 may be formed of the same material as the scan line.

The first insulating layer 12 is provided with a first insulating layer 14 covering the first control electrode GE1 and the second control electrode GE2 and the first electrode E1. The second insulating layer 14 includes an organic layer and / or an inorganic layer. In particular, the second insulating layer 14 may include a plurality of inorganic thin films. The plurality of inorganic thin films may include a silicon nitride layer and a silicon oxide layer.

The source line DLj (see FIG. 4) and the power supply line PL (see FIG. 4) may be disposed on the second insulating layer 14. [ An input electrode SE1 (hereinafter referred to as a first input electrode) and an output electrode DE1 (hereinafter referred to as a first output electrode) of the first transistor TR1 are disposed on the second insulating layer 14. [ An input electrode SE2 (hereinafter referred to as a second input electrode) and an output electrode DE2 (hereinafter referred to as a second output electrode) of the second transistor TR2 are disposed on the second insulating layer 14. [ The first input electrode SE1 is branched from the source line DLj. The second input electrode SE2 branches from the power supply line PL.

A second electrode E2 of the capacitor Cap is disposed on the second insulating layer 14. [ The second electrode E2 may be manufactured by the same photolithography process as the source line DLj and the power source line PL, and may be composed of the same material.

The first input electrode SE1 and the first output electrode DE1 are electrically connected to the first through hole CH1 and the second through hole CH2 through the first insulating layer 12 and the second insulating layer 14, Respectively, to the first semiconductor pattern AL1. The first output electrode DE1 may be electrically connected to the first electrode E1. For example, the first output electrode DE1 may be connected to the first electrode E1 through a through hole (not shown) through the second insulating layer 14. [ The second input electrode SE2 and the second output electrode DE2 are electrically connected to the third through hole CH3 and the fourth through hole CH4 through the first insulating layer 12 and the second insulating layer 14, Respectively, to the second semiconductor pattern AL2. Meanwhile, in another embodiment of the present invention, the first transistor TR1 and the second transistor TR2 may be modified into a bottom gate structure.

A third insulating layer 16 (not shown) covering the first input electrode SE1, the first output electrode DE1, the second input electrode SE2, and the second output electrode DE2 is formed on the second insulating layer 14, . The third insulating layer 16 includes an organic layer and / or an inorganic layer. In particular, the third insulating layer 16 may comprise an organic material to provide a planar surface.

A pixel defining layer (PXL) and an organic light emitting diode (OLED) are disposed on the third insulating layer (16). An opening OP is defined in the pixel defining film PXL. The pixel defining layer (PXL) is the same as another insulating layer. The opening OP of FIG. 6B may correspond to the openings OP-R, OP-G, and OP-B of FIG.

The anode AE is connected to the second output electrode DE2 through the fifth through hole CH5 passing through the third insulating layer 16. [ The opening OP of the pixel defining layer PXL exposes at least a part of the anode AE. The hole control layer HCL may be formed in common to the light emitting regions PXA-R, PXA-G and PXA-B, see FIG. 5, and the non-light emitting region NPXA, see FIG. An organic light emitting layer (EML) and an electron control layer (ECL) are sequentially formed on the hole control layer (HCL). The hole control layer (HCL) includes at least a hole transporting layer, and the electron control layer (ECL) includes at least an electron transporting layer. Thereafter, the cathode CE can be commonly formed in the light emitting regions PXA-R, PXA-G, and PXA-B and the non-light emitting region NPXA. And may be formed by a deposition or sputtering method depending on the layer structure of the cathode CE.

The light emitting region PXA may be defined as a region where light is generated. The light emitting region PXA may be defined corresponding to the anode AE or the light emitting layer EML of the organic light emitting diode OLED.

A thin film encapsulation layer (TFE) for encapsulating the organic light emitting element layer (DP-OLED) is disposed on the cathode (CE). The thin film encapsulation layer (TFE) protects the OLED from moisture and foreign matter.

7A to 7C are cross-sectional views of thin film encapsulation layers (TFE1, TFE2, TFE3) according to an embodiment of the present invention. The thin film encapsulation layers (TFE1, TFE2, TFE3) according to one embodiment of the present invention will be described with reference to Figs. 7A to 7C.

The thin film sealing layer includes at least two inorganic thin films and an organic thin film disposed therebetween. The inorganic thin films protect the organic light emitting device OLED from moisture and the organic thin film protects the organic light emitting device OLED from foreign substances such as dust particles.

7A, the thin film sealing layer TFE1 may include n inorganic thin films IOL1 to IOLn including the first inorganic thin film IOL1 contacting the cathode CE (see Fig. 6B) . The first inorganic thin film IOL1 is defined as a lower inorganic thin film, and inorganic thin films other than the first inorganic thin film IOL1 among the n inorganic thin films IOL1 to IOLn can be defined as upper inorganic thin films.

The thin film encapsulation layer TFE1 includes n organic thin films OL1 to OLn and the n organic thin films OL1 to OLn may be arranged alternately with the n inorganic thin films IOL1 to IOLn. The layer disposed on the uppermost layer may be an organic layer or an inorganic layer. the n organic thin films OL1 to OLn may have an average thickness larger than the n inorganic thin films IOL1 to IOLn.

Each of the n inorganic thin films IOL1 to IOLn may be a single layer containing one material, or may have a multi-layer each containing another material. Each of the n organic thin films OL1 to OLn may be formed by depositing organic monomers. The organic monomers may comprise acrylic monomers.

7B and 7C, the inorganic thin films included in each of the thin film encapsulation layers TFE2 and TFE3 may have the same or different inorganic materials and may have the same or different thicknesses. The organic thin films included in each of the thin film encapsulation layers (TFE2 and TFE3) may have the same or different organic materials and may have the same or different thicknesses.

7B, the thin film encapsulation layer TFE2 includes a first inorganic thin film IOL1, a first organic thin film OL1, a second inorganic thin film IOL2, a second organic thin film OL2, , And a third inorganic thin film (IOL3).

The first inorganic thin film IOL1 may have a two-layer structure. The first sub-layer S1 may be a lithium fluoride layer and the second sub-layer S2 may be an aluminum oxide layer. The first organic thin film OL1 is a first organic monomer layer, the second inorganic thin film IOL2 is a first silicon nitride layer, the second organic thin film OL2 is a second organic monomer layer, (IOL3) may be a second silicon nitride layer.

As shown in FIG. 7C, the thin film encapsulation layer TFE3 may include a first inorganic thin film IOL10, a first organic thin film OL1, and a second inorganic thin film IOL20 which are sequentially stacked. The first inorganic thin film IOL10 may have a two-layer structure. The first sub-layer S10 may be a lithium fluoride layer and the second sub-layer S20 may be a silicon oxide layer. The first organic thin film OL1 may be an organic monomer layer and the second inorganic thin film IOL20 may have a two-layer structure. The second inorganic thin film IOL20 may include a first sub-layer S100 and a second sub-layer S200 deposited in different deposition environments. The first sub-layer S100 may be deposited under low power conditions and the second sub-layer S200 may be deposited under high power conditions. Each of the first sub-layer S100 and the second sub-layer S200 may be a silicon nitride layer.

8A to 8D are cross-sectional views of display devices according to an embodiment of the present invention. The display panels DP, DP1 and DP2 are shown briefly. 8A to 8D, a description will be given of the similarities and differences of the display devices.

As shown in FIGS. 8A and 8B, the touch screen TS includes a first conductive layer TS-CL1, a first insulating layer TS-IL1, a second conductive layer TS-CL2, An insulating layer TS-IL2, a third conductive layer TS-CL3, and a third insulating layer TS-IL3. The touch screen TS is directly disposed on the display panels DP and DP1. The first conductive layer TS-CL1, the second conductive layer TS-CL2, and the third conductive layer TS-CL3 Layer structure or may have a multilayer structure stacked along the third directional axis DR3. The conductive layer of the multilayer structure may include a transparent conductive layer and at least one metal layer. The transparent conductive layer may include ITO (indium tin oxide), IZO (indium zinc oxide), ZnO (zinc oxide), ITZO (indium tin zinc oxide), PEDOT, metal nanowire, and graphene. The metal layer may comprise molybdenum, silver, titanium, copper, aluminum, and alloys thereof.

Each of the first conductive layer TS-CL1, the second conductive layer TS-CL2, and the third conductive layer TS-CL3 includes a plurality of patterns. The second conductive layer TS-CL2 includes second conductive patterns and the third conductive layer TS-CL3 includes third conductive layers TS-CL1 and TS- Are described as including conductive patterns. The first conductive patterns are conductive layers (hereinafter referred to as noise shielding conductive layers) for shielding noise generated in the display panel DP. The noise shielding conductive layer may be a floating electrode layer or may receive a ground voltage. The second conductive patterns and the third conductive patterns may include touch electrodes and touch signal lines to sense an external input.

In this embodiment, any one of the first insulating layer TS-IL1 and the second insulating layer TS-IL2 includes at least a color filter layer. The color filter layer includes a plurality of color filters. The color filters may be organic patterns including dyes or pigments. The color filters may include a plurality of groups of color filters. For example, the color filters may include red color filters, green color filters, and blue color filters.

In one embodiment of the present invention, any one of the first insulating layer TS-IL1 and the second insulating layer TS-IL2 may further include a black matrix. The black matrix may include an organic material as a base material. The black matrix may comprise a black pigment or a black dye. The material constituting the black matrix is not particularly limited.

In one embodiment of the present invention, the first insulating layer TS-IL1 and the second insulating layer TS-IL2 may further include at least one of an inorganic layer and an organic layer. The inorganic layer or organic layer may be a planarizing layer providing a planar surface. The inorganic layer may comprise silicon oxide or silicon nitride. The organic material layer may include at least one of an acrylic resin, a methacrylic resin, a polyisoprene, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin and a perylene resin.

In one embodiment of the present invention, the third insulating layer (TS-IL3) may include a black matrix. The black matrix may include an organic material having a high light absorption rate as a base material. The black matrix may comprise a black pigment or a black dye.

In one embodiment of the present invention, the third insulating layer (TS-IL3) may further include at least one of an inorganic layer and an organic layer. In particular, it may further comprise an organic layer to provide a flat surface. The inorganic material may include silicon oxide or silicon nitride. The organic material may include at least one of an acrylic resin, a methacrylic resin, a polyisoprene, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin and a perylene resin. In an embodiment of the present invention, At least one of the insulating layer TS-IL1, the second insulating layer TS-IL2, and the third insulating layer TS-IL3 may further include a hard coating layer. Accordingly, the touch screen (TS) can replace the window member. In this embodiment, the hard coating layer may comprise a silicone-based polymer. The material of the hard coat layer is not particularly limited and may include known hard coat materials.

As shown in Fig. 8A, the first conductive layer TS-CL1 may be disposed on the thin-film encapsulation layer (TFE). In other words, a thin film sealing layer (TFE) provides the base surface BS on which the touch screen TS is disposed.

The display panel DP1 shown in Fig. 8B may further include a buffer layer BFL disposed on the thin film encapsulation layer (TFE) relative to the display panel DP shown in Fig. 8A. A buffer layer (BFL) provides a base surface (BS). The buffer layer (BFL) is an organic layer, and may include other materials depending on its purpose. The buffer layer BFL may be an organic layer / inorganic layer for refractive index matching.

As shown in Fig. 8C, the touch screen TS1 can be coupled to the display panel DP by a transparent optical adhesive member OCA. The touch screen TS1 may further include a base member TS-BS on which the first conductive layer TS-CL1 and the first insulating layer TS-IL1 are disposed.

As shown in FIG. 8D, the touch screen TS2 includes a second conductive layer TS-CL2 and a third conductive layer TS-CL3 each including touch electrodes and touch signal lines. A first conductive layer TS-CL1 for shielding noise is omitted from the touch panel TS2 and the display panel DP2 further includes a noise shielding conductive layer DP-NSPL. The noise-shielding conductive layer (DP-NSPL) may be disposed on the thin-film encapsulation layer (TFE).

9A and 9B are plan views of the conductive layers TS-CL1 and TS-CL2 of the touch screen TS according to an embodiment of the present invention. 9C and 9D are plan views of a noise shielding conductive layer of a touch screen according to an embodiment of the present invention. In this embodiment, a two-layer capacitive touch screen is exemplarily shown. A two-layer capacitive touch screen can acquire coordinate information of a touched point by a self-capacitance method or a mutual capacitance method. The driving method of the touch screen for obtaining the coordinate information is not particularly limited.

As shown in FIG. 9A, the first conductive patterns may include first touch electrodes TE1-1 to TE1-3 and first touch signal lines SL1-1 to SL1-3. In FIG. 9A, three first touch electrodes TE1-1 to TE1-3 and first touch signal lines SL1-1 to SL1-3 connected thereto are illustrated.

The first touch electrodes TE1-1 to TE1-3 extend in the first direction DR1 and are arranged in the second direction DR2. Each of the first touch electrodes TE1-1 to TE1-3 is a mesh shape in which a plurality of touch openings are defined. The touch openings may correspond to a plurality of light emitting regions (PXA-R, PXA-G, PXA-B, see FIG. 5). The mesh shape will be described later in detail.

Each of the first touch electrodes TE1-1 to TE1-3 includes a plurality of first sensor units SP1 and a plurality of first connection units CP1. The first sensor units SP1 are arranged in a first direction DR1. Each of the first connection parts CP1 connects the first sensor parts SP1 to the first two sensor parts SP1.

The first touch signal lines SL1-1 to SL1-3 may also have a mesh shape. The first touch signal lines SL1-1 to SL1-3 may have the same layer structure as the first touch electrodes TE1-1 to TE1-3.

As shown in FIG. 9B, the second conductive patterns may include the second touch electrodes TE2-1 through TE2-3 and the second touch signal lines SL2-1 through SL2-3. FIG. 9B exemplarily shows three second touch electrodes TE2-1 through TE2-3 and second touch signal lines SL2-1 through SL2-3 connected thereto.

The second touch electrodes TE2-1 to TE2-3 are insulated from the first touch electrodes TE1-1 to TE1-3. Each of the second touch electrodes TE2-1 to TE2-3 has a mesh shape in which a plurality of touch openings are defined.

Each of the second touch electrodes TE2-1 to TE2-3 includes a plurality of second sensor units SP2 and a plurality of second connection units CP2. And the second sensor units SP2 are arranged in the second direction DR2. Each of the second connection parts CP2 connects the two second sensor parts SP2 among the second sensor parts SP2.

The second touch signal lines SL2-1 to SL2-3 may also have a mesh shape. The second touch signal lines SL2-1 through SL2-3 may have the same layer structure as the second touch electrodes TE2-1 through TE2-3.

The first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 are electrostatically coupled. Capacitors are formed between the first sensor units SP1 and the second sensor units SP2 as the touch sensing signals are applied to the first touch electrodes TE1-1 to TE1-3.

The shapes of the first touch electrodes TE1-1 through TE1-3 and the second touch electrodes TE2-1 through TE2-3 including the sensor unit and the connection unit are only examples, It does not. The connecting portion may be defined as a portion where the first touch electrodes TE1-1 to TE1-3 intersect with the second touch electrodes TE2-1 to TE2-3, and the sensor unit may be connected to the first touch electrodes TE1 -1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 are defined as non-overlapping portions. For example, each of the first touch electrodes TE1-1 through TE1-3 and the second touch electrodes TE2-1 through TE2-3 may have a bar shape having a constant width.

As shown in Fig. 9C, the noise shielding conductive layer NSPL overlaps the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3. For example, the noise shielding conductive layer NSPL may include first shielding portions NSP1 overlapping the first sensor portions SP1, second shielding portions NSP2 overlapping the second sensor portions SP2, And third shielding portions NCP overlapping the first connection portions CP1 and the second connection portions CP2. The noise shielding conductive layer (NSPL) has a mesh shape in which a plurality of shielding openings are defined. The plurality of shielding openings may correspond to a plurality of light emitting regions (PXA-R, PXA-G, PXA-B, see FIG. 5). Each of the first shielding portions NSP1, the second shielding portions NSP2, and the third shielding portions NCP may be defined as a mesh line. The line width of the mesh line may be several micros.

As shown in Fig. 9D, the noise shielding conductive layer NSPL-1 has the shape of the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3, It can have an irrelevant shape. The noise shielding conductive layer NSPL-1 may have a square shape corresponding to the display area DA, and a plurality of shielding openings may be defined.

FIG. 10A is a partially enlarged view of the area AA in FIG. 9A. FIG. 10B through 10J are partial cross-sectional views of FIG. 10A according to an embodiment of the present invention. 11A is a partial enlarged view of the BB area of FIG. 9B. 11B is a partial sectional view of Fig. 12A is a partial enlarged view of the CC region in Figs. 9A and 9B. 12B is a partial cross-sectional view of Fig. 12A. Each of Figs. 10B to 10J, 11B and 12B shows a cross section of the entire display device except for the window member WM (see Figs. 2A and 2B), and the circuit layer DP-CL is schematically shown.

As shown in Fig. 10A, the first sensor unit SP1 overlaps the non-emission area NPXA adjacent to the light emission areas PXA. The first sensor unit SP1 includes a plurality of first longitudinal portions SP1-C extending in the first direction DR1 and a plurality of first lateral portions SP1-L extending in the second direction DR2. . The plurality of first longitudinal portions SP1-C and the plurality of first lateral portions SP1-L may be defined as mesh lines. The line width of the mesh line may be several micros.

The plurality of first longitudinal portions SP1-C and the plurality of first lateral portions SP1-L are connected to each other to form a plurality of touch openings TS-OP. In other words, the first sensor unit SP1 has a mesh shape having a plurality of touch openings TS-OP. The touch openings TS-OP correspond to one-to-one correspondence to the light emitting regions PXA, but are not limited thereto. One touch opening TS-OP may correspond to two or more light emitting regions PXA. That is, two or more light emitting regions PXA may be disposed inside one touch opening TS-OP.

As shown in FIG. 10B, a thin film encapsulation layer (TFE) provides a base surface BS. The first shielding portion NSP1 is disposed on the base surface BS so as to overlap the non-emission region NPXA. The first shielding part NSP1 has a mesh shape in which the shielding opening NSP-OP is defined.

A first overcoat layer TS-OC may be disposed on the base surface BS to cover the first shield NSP1 and provide a first planar surface FS1. The first overcoat layer TS-OC1 may be an organic layer as the first insulating layer TS-IL1 described with reference to FIGS. 8A to 8C.

A first sensor portion SP1 which overlaps the first shielding portion NSP1 is disposed on the first overcoat layer TS-OC1. Color filters CF covering the first sensor portion SP1 are disposed on the first overcoat layer TS-OC1. The color filters CF are disposed corresponding to the light emitting regions PXA, respectively. The color filters CF may be an organic layer included in the second insulating layer TS-IL2 described with reference to Figs. 8A to 8C.

Each of the color filters CF may include a center portion CF-C and an edge portion CF-E. The central portion CF-C overlaps the corresponding one of the plurality of light emitting regions PXA. The edge portion CF-E extends from the center portion CF-C and overlaps the non-light-emitting region NPXA and covers the first lateral portion SP1-L of the first sensor portion SP1. Although not separately shown, each of the color filters CF may surround the center portion CF-C, as viewed in plan, the edge portion CF-E.

The left color filter among the color filters CF shown in this embodiment is a red color filter, and the right color filter may be a green color filter. The edge portion CF-E of each of the adjacent color filters CF may contact the first lateral portion SP1-L and cover the first lateral portion SP1-L. The edge portions CF-E of the adjacent color filters CF can contact each other. The edge portions CF-E of the adjacent color filters CF partially cover the first lateral portion SP1-L, and completely cover the first conductive pattern complementarily.

The black matrix TS-BM is disposed on the color filters CF so as to overlap the non-emission area NPXA. The black matrix (TS-BM) may be an organic layer included in the third insulating layer (TS-IL3) described with reference to Figs. 8A to 8C. As shown in FIG. 10B, the black matrix (TS-BM) may be disposed directly on the color filters CF. In the black matrix (TS-BM), a plurality of transmission openings BM-OP corresponding to the light emitting regions PXA are defined.

The planar shapes of the plurality of light emitting regions PXA and the plurality of transmissive opening portions BM-OP may be the same. In other words, the black matrix TS-BM has substantially the same shape as the non-emission area NPXA (for example, the black matrix TS-BM corresponds to the non-emission area NPXA, the first direction DR1, DR2) having the same width). However, the present invention is not limited to this, and the plurality of light emitting regions PXA and the plurality of transmission opening portions BM-OP may have different shapes. The first shielding portion NSP1 and the first lateral portion SP1-L are disposed inside the black matrix TS-BM.

The color filters CF not only transmit the light generated from the organic light emitting elements OLED but also reduce the reflectance of external light. Also, as the external light passes through the color filters CF, the amount of light is reduced to about 1/3. The light passing through the color filters CF partially disappears and is partially reflected from the organic light emitting element layer DP-OLED, the thin film encapsulation layer (TFE) and the like. The reflected light is incident on the color filters CF. The amount of light is reduced to about 1/3 while the reflected light passes through the color filters CF. As a result, only a part of the external light is reflected from the display device.

FIGS. 10C and 10D show the non-emission area NPAX shown in FIG. The configuration of the base surface BS and the following is omitted. As shown in Fig. 10C, the edge portion CF-E of the left color filter can completely cover the first lateral portion SP1-L. The edge portion CF-E of the right color filter can be disposed on the edge portion CF-E of the left color filter. The shape of the boundary portion of the color filters disposed in the non-emission area NPAX may be deformed according to the order in which the left color filter and the right color filter are formed. The first transverse portion SP1-L has a first line width W1 and the first shielding portion NSP1 can have a second line width W2 greater than the first line width W1. The first lateral portion SP1-L is disposed inside the first shielding portion NSP1.

The first black matrix TS-BM1 overlapping the first lateral portion SP1-L is disposed on the first flat surface FS1, as shown in Fig. 10D. The color filter is disposed on the first flat surface FS1. The edge portion CF-E of the right color filter and the edge portion CF-E of the left color filter partially expose the first black matrix TS-BM1. In one embodiment of the invention, the edge portions CF-E of the color filters may be omitted. That is, the color filters may be disposed only inside the transmission openings BM-OP of the black matrix (TS-BM).

A second overcoat layer (TS-OC2) may be disposed on the left color filter and the right color filter. The second overcoat layer (TS-OC2) may provide a second flat surface (FS2). The second overcoat layer (TS-OC2) may be an organic material layer included in the second insulating layer (TS-IL2) described with reference to Figs. 8A to 8C. The first shielding portion NSP1 may be disposed on the base surface BS in a non-luminous manner, as shown in FIG. 10E, and the second black matrix TS-BM2 may be disposed directly on the second flat surface FS2. Area NPXA. Color filters CF that cover the first shield NSP1 are disposed on the base surface BS. A first lateral portion SP1-L is disposed on the color filters CF. An overcoat layer (TS-OC) is disposed on the color filters (CF). A black matrix (TS-BM) is disposed on the flat surface (FS) of the overcoat layer (TS-OC). In an embodiment of the present invention, another overcoat layer may be further disposed on the color filters CF.

As shown in Fig. 10F, a first black matrix TS-BM1 covering the first lateral portion SP1-L is arranged on the color filters CF. The first black matrix TS-BM1 may define first through apertures BM-OP1. An overcoat layer (TS-OC) covering the first black matrix (TS-BM1) is arranged on the color filters (CF). The second black matrix TS-BM2 is disposed on the flat surface FS of the overcoat layer TS-OC. The second black matrix TS-BM2 may define second through apertures BM-OP2.

As shown in FIGS. 10G and 10H, the touch screen TS may further include at least one hard coating layer (TS-HC, TS-HC1, TS-HC2, TS-HC3). The touch screen TS shown in Fig. 10G is a hard coating layer TS-HC disposed on the second overcoat layer TS-OC2 and the second flat surface FS2 with respect to the touch screen TS shown in Fig. 10B, .

By arranging the hard coating layer (TS-HC), the hardness is increased, and the window member (WM, Figs. 2A and 2B) can be omitted. The display device can be made slim by integrating the window member WM with the touch screen TS.

The touch screen TS shown in FIG. 10H further includes first to third hard coating layers TS-HC1, TS-HC2 and TS-HC3. The first hard coating layer TS-HC1 is disposed between the color filter layer including the first overcoat layer TS-OC1 and the color filters CF and the second hard coating layer TS-HC2 is disposed between the color filter layer and the black (TS-BM), and the third hard coating layer (TS-HC3) may be disposed on the uppermost layer of the touch screen TS. The touch screen TS shown in FIGS. 10G and 10H exemplarily shows an embodiment in which a hard coating layer is added to the touch screen TS of FIG. 10B, but the present invention is not limited thereto.

The first shielding portion NSP1, that is, the noise shielding conductive layer (NSPL, NSPL-1, see Figs. 9C and 9D) is arranged on the buffer layer BFL of the display panel DP- . 10I illustrates the touch screen TS of FIG. 10B by way of example, but the configuration of the touch screen TS is not limited thereto.

Although not shown separately, the touch screen shown in Figs. 10B to 10I may further include a base member. The display device shown in Fig. 8C can be implemented by combining the base member and the display panel with a transparent optical adhesive member.

Fig. 10J is the same as that shown specifically in the display device shown in Fig. 8D. As shown in FIG. 10J, the display panel may include a noise shielding conductive layer (NSPL, NSPL-1, see FIGS. 9C and 9D). 10J, the first shielding portion NSP1 is shown as a part of the noise shielding conductive layer. The first shield NSP1 is disposed on the base surface BS. A transparent optical adhesive member OCA is disposed on the base surface BS and a base member TS-BS is disposed on the transparent optical adhesive member OCA.

Fig. 10J exemplarily shows a touch screen (TS) having the same layer structure as the touch screen (TS) shown in Fig. 10B. The configuration of the touch screen (TS) is not limited thereto.

As shown in Figs. 11A and 11B, the second sensor section SP2 overlaps the non-emission area NPXA. The second sensor unit SP2 includes a plurality of second vertical units SP2-C extending in the first direction DR1 and a plurality of second horizontal units SP2-L extending in the first direction DR1. .

The plurality of second longitudinal portions SP2-C and the plurality of second lateral portions SP2-L are connected to each other to form a plurality of touch openings TS-OP. In other words, the second sensor unit SP2 has a mesh shape.

As shown in Fig. 11B, the color filters CF are disposed on the first flat surface FS1. The edges CF-E of the adjacent color filters CF are in contact with each other. And second longitudinal portions SP2-C are arranged on the color filters CF. The black matrix TS-BM disposed on the color filters CF covers the second conductive patterns, i.e., the second vertical portions SP2-C.

Fig. 11B shows a partial cross section of the BB region corresponding to Fig. 10B. In another embodiment of the present invention, the partial cross-section of the BB region may have the structure shown in Figures 10C-10J. However, as shown in FIGS. 12A and 12B, the first connecting portions CP1 and the second connecting portions CP2-C are disposed on the partial cross-section of the BB region, (CP1-C1, CP1-C2) disposed on the first overcoat layer (TS-OC1) and third transverse portions CP1 -L). ≪ / RTI > Two third vertical portions CP1-C1 and CP1-C2 are shown but are not limited thereto.

The second connection part CP2 is connected to the fourth transverse parts CP2-L1 and CP2-L2 disposed on the color filter layer TS-CF and the fourth transverse parts CP2- And vertical portions CP2-C. The first connection portion CP1 may have a mesh shape and the second connection portion CP2 may have a mesh shape.

Although not shown in FIG. 12A, the third shielding portion NCP is disposed on the base surface BS, as shown in FIG. 12B. The third shielding portion NCP overlaps the first connection portion CP1 and the second connection portion CP2. The first overcoat layer (TS-OC1) covers the third shielding portion (NCP).

12A and 12B show the layer structure corresponding to FIGS. 10B and 11B, but are not limited thereto. The cross-sectional structure corresponding to the connection portions CP1 and CP2 of the touch screen TS can be modified as shown in Figs. 10C to 10J.

10A to 12B, the first touch electrodes TE1-1 to TE1-3, the second touch electrodes TE2-1 to TE2-3, and the first shield portions NSP1, The second shielding portions NSP2, and the third shielding portions NCP have a mesh shape, the flexibility of the flexible display device DD is improved. When the flexible display device DD is bent as shown in FIGS. 1B and 2B, the voltage applied to the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 Tensile stress / compressive stresses can be reduced to prevent their cracking.

Since the insulating layers of the touch screen TS include the color filter CF, the display device becomes slimmer. The first shielding portions NSP1, the second shielding portions NSP2 and the third shielding portions NCP are disposed so that the first touch electrodes TE1-1 through TE1-1 and the second touch electrodes TE2- 1 to TE2-3 can block the noise generated from the circuit layer DP-CL and the organic light emitting diode layer DP-OLED even if they are adjacent to each other. Therefore, the touch sensitivity can be improved.

13A and 13B are plan views of conductive layers of a touch screen TS-1 according to an embodiment of the present invention. 13C is a partially enlarged view of the CC region in Figs. 13A and 13B. 13D is a partial cross-sectional view of Fig. Hereinafter, detailed description of the same components as those described with reference to Figs. 1 to 12B will be omitted.

In this embodiment, a one-layer capacitive touch screen is exemplarily shown. A self capacitance method, and a driving method of a touch screen for obtaining coordinate information is not particularly limited.

As shown in FIG. 13A, the first conductive patterns include first touch electrodes TE1-1 to TE1-3, first touch signal lines SL1-1 to SL1-3, second touch electrodes Second sensor units SP2 of TE2-1 to TE2-3, and second touch signal lines SL2-1 to SL2-3. Each of the first touch electrodes TE1-1 to TE1-3 includes a plurality of first sensor units SP1 and a plurality of first connection units CP1.

In other words, the plurality of first sensor units SP1, the plurality of first connection units CP1, and the second sensor units SP2 are disposed on the same layer. Although not separately shown, each of the AA region and the BB region may have the structure of Figs. 10B to 10J on a cross section.

As shown in FIG. 13B, the second conductive patterns include a plurality of second connection portions CP2 of the second touch electrodes TE2-1 to TE2-3. The second connection portions CP2 have a bridge function.

13C and 13D, the second connection CP2 is connected to the color filter layer TS-CH1 through the first through hole TS-CH1 passing through the color filter layer TS-CF and the second through hole TS- And electrically connects the two second sensor units SP2 of the two sensor units SP2 in the second direction DR2.

Although not shown in FIG. 13C, the third shielding portion NCP is disposed on the base surface BS, as shown in FIG. 13D. The third shielding portion NCP overlaps the first connection portion CP1 and the second connection portion CP2. The first overcoat layer (TS-OC1) covers the third shielding portion (NCP).

Figs. 13C and 13D show the layer structure corresponding to Figs. 10B and 11B, but are not limited thereto. Sectional structure corresponding to the connection portions CP1 and CP2 of the touch screen TS may be modified as shown in Figs. 10C to 10J. Figs. 14A and 14B are cross-sectional views of a touch screen according to an embodiment of the present invention. Lt; RTI ID = 0.0 > (TS-2). ≪ / RTI > 15A is a partially enlarged view of the DD area in Figs. 14A and 14B. Fig. 15B is a partially enlarged view of Fig. 15A. 15C and 15D are partial cross-sectional views of Fig. 15A. Hereinafter, detailed description of the same configuration as that described with reference to Figs. 1 to 13D will be omitted.

14A and 14B, the first conductive patterns may include first touch electrodes TE1-1 through TE1-3 and first auxiliary electrodes SE1. Each of the first touch electrodes TE1-1 to TE1-3 includes a plurality of first sensor units SP1 and a plurality of first connection units CP1. The second conductive patterns may include the second touch electrodes TE2-1 through TE2-3 and the second auxiliary electrodes SE1. Each of the second touch electrodes TE2-1 to TE2-3 includes a plurality of second sensor units SP2 and a plurality of second connection units CP2.

Each of the first auxiliary electrodes SE1 overlaps the corresponding second sensor unit of the plurality of second sensor units SP2 and each of the second auxiliary electrodes SE2 overlaps the corresponding one of the plurality of first sensor units SP1 And can be superimposed on the corresponding first sensor unit. The first auxiliary electrodes SE1 and the second auxiliary electrodes SE2 may have a mesh shape. Each of the first auxiliary electrodes SE1 is electrically connected to the corresponding second sensor unit, and each of the second auxiliary electrodes SE2 is electrically connected to the corresponding first sensor unit. Accordingly, the resistances of the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 are lowered and the touch sensitivity is improved.

A combination of the first sensor units SP1, the plurality of first connection units CP1, and the second auxiliary electrodes SE2 may be defined as a first touch electrode. The first sensor units SP1 correspond to the lower sensor unit of the first touch electrode, the plurality of first connection units CP1 correspond to the lower connection units, and the second auxiliary electrodes SE2 correspond to the upper sensor unit . Similarly, a combination of the second sensor units SP2, the plurality of second connection units CP2, and the first auxiliary electrodes SE1 may be defined as a second touch electrode.

15A and 15B specifically show the connection relationship between the second auxiliary electrode SE2 and the first sensor unit SP1. The first sensor unit SP1 is shown by a dotted line and the second auxiliary electrode SE2 is shown by a solid line. The line width of the second auxiliary electrode SE2 is shown larger than the line width of the first sensor unit SP1, but is not limited thereto. The line widths of the second auxiliary electrode SE2 and the first sensor unit SP1 may be equal to each other. The second auxiliary electrode SE2 may overlap the first sensor portion SP1 and may not overlap the first connection portion CP1.

As shown in FIGS. 15C and 15D, the second auxiliary electrode SE2 and the first sensor unit SP1 may be connected through a plurality of auxiliary through holes SCH. Although not shown in Figs. 15A and 15B, as shown in Figs. 15C and 15D, a third shielding portion NCP is disposed on the base surface BS. The third shielding portion NCP overlaps the first sensor portion SP1 and the second auxiliary electrode SE2. The first overcoat layer (TS-OC1) covers the third shielding portion (NCP). The first sensor unit SP1 is disposed on the first overcoat layer TS-OC1.

Figs. 15C and 15D show the layer structure corresponding to Figs. 10B and 11B, but are not limited thereto. The cross-sectional structure corresponding to the DD area of the touch screen TS may be modified as shown in Figs. 10C to 10J.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and changes may be made thereto without departing from the scope of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

WM: window member WM-BS: base member
WM-BM: Bezel layer TS: Touch screen
DP: Display panel

Claims (20)

A display panel providing a base surface and including a plurality of light emitting regions and a non-emitting region adjacent to the plurality of light emitting regions; And
And a touch screen disposed on the base surface,
The touch screen,
A noise shielding conductive layer disposed on the base surface and overlapping the non-emission region;
A first insulating layer disposed on the base surface, the first insulating layer covering the noise shielding conductive layer;
First conductive patterns disposed on the first insulating layer, the first conductive patterns overlapping a portion of the noise shielding conductive layer;
A second insulating layer disposed on the first insulating layer;
Second conductive patterns disposed on the second insulating layer, the second conductive patterns overlapping a portion of the noise shielding conductive layer; And
And a third insulating layer disposed on the second insulating layer. The method according to claim 1,
Wherein the first insulating layer comprises a first overcoat layer providing a first flat surface on which the first conductive patterns are disposed. 3. The method of claim 2,
Wherein the second insulating layer includes a plurality of color filters each of which overlaps a corresponding one of the plurality of light emitting regions. The method of claim 3,
And the edges of each of the plurality of color filters overlaps the non-emission region. 5. The method of claim 4,
Wherein the second insulating layer covers the plurality of color filters and further comprises a second overcoat layer providing a second flat surface on which the second conductive patterns are disposed. 5. The method of claim 4,
Wherein the second insulating layer further includes a black matrix disposed on the first flat surface and covering the first conductive patterns and defining openings corresponding to the plurality of light emitting regions. The method according to claim 1,
Wherein the third insulating layer covers the second conductive patterns and includes black matrices defining openings corresponding to the plurality of light emitting regions. The method according to claim 1,
Wherein the first insulating layer includes a plurality of color filters each overlapping a corresponding one of the plurality of light emitting regions. 9. The method of claim 8,
Wherein the second insulating layer comprises an overcoat layer providing a flat surface on which the second conductive patterns are disposed. 10. The method of claim 9,
Wherein the second insulating layer further comprises a black matrix disposed on the plurality of color filters and covering the first conductive patterns and defining openings corresponding to the plurality of light emitting regions,
Wherein the overcoat layer covers the black matrix. The method according to claim 1,
Wherein at least one of the first insulating layer, the second insulating layer, and the third insulating layer includes a hard coat layer. The method according to claim 1,
Wherein the noise shielding conductive layer includes first mesh lines defining first openings corresponding to the plurality of light emitting regions,
Wherein the first conductive patterns include second mesh lines defining second openings corresponding to the plurality of light emitting regions,
Wherein the line width of the first mesh lines is larger than the line width of the second mesh lines. The method according to claim 1,
Further comprising: a window member disposed on the touch screen; and a transparent optical adhesive member coupling the window member and the touch screen,
Wherein the window member comprises a base member and a hard coating layer disposed on the base member. The method according to claim 1,
Wherein the noise shielding conductive layer receives a ground voltage. The method according to claim 1,
In the display panel,
A base substrate;
A circuit layer disposed on the base substrate;
An organic light emitting element layer disposed on the circuit layer; And
And a thin film encapsulating layer for encapsulating the organic light emitting element layer. 16. The method of claim 15,
Wherein the thin film encapsulation layer provides the base surface. And a noise shielding conductive layer disposed on the base surface to overlap the non-emission region, the noise shielding conductive layer being defined as a non-emission region adjacent to the plurality of emission regions and the plurality of emission regions, ; And
A touch screen disposed on the noise shielding conductive layer; And
And a transparent optical bonding member for bonding the base surface and the touch screen,
The touch screen,
A base member;
First conductive patterns disposed on the base member, the first conductive patterns overlapping a portion of the noise shielding conductive layer;
A first insulating layer disposed on the base member and covering the first conductive patterns;
Second conductive patterns disposed on the first insulating layer and overlapping a portion of the noise shielding conductive layer; And
And a second insulating layer disposed on the first insulating layer. 18. The method of claim 17,
Wherein one of the first insulating layer and the second insulating layer includes a plurality of color filters overlapping a corresponding one of the plurality of light emitting regions. 19. The method of claim 18,
Wherein at least one of the first insulating layer and the second insulating layer includes a black matrix in which openings corresponding to the plurality of light emitting regions are defined. 20. The method of claim 19,
Wherein each of the noise shielding conductive layer, the first conductive patterns, and the second conductive patterns has a mesh shape in which openings corresponding to the plurality of light emitting regions are defined.

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