KR102428711B1 - Flexible display device - Google Patents

Abstract

The flexible display device includes a display panel providing a base surface and a touch screen disposed on the base surface. The display panel includes a plurality of light-emitting areas and a non-emission area adjacent to the plurality of light-emitting areas. The touch screen includes touch electrodes, insulating layers, and color filters. The insulating layers have a mesh shape in which openings corresponding to the plurality of light emitting regions are defined. The color filters are respectively disposed inside the openings. Accordingly, the display device becomes slim and external light reflectance is reduced.

Description

Flexible display device {FLEXIBLE DISPLAY DEVICE}

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 televisions are being developed. These electronic devices are provided with a display device to provide information.

As electronic devices change into various shapes, the shapes of display devices are correspondingly changed. Existing electronic devices have a flat panel display device. Recently developed electronic devices require flexible display devices such as curved, bending, and rolling types.

In addition, consumers demand slimmer electronic devices. To implement this, various functional members are being integrated into the display device.

Accordingly, it is an object of the present invention to provide a slim flexible display device.

A flexible display device according to an embodiment of the present invention provides a base surface, a display panel including a plurality of light emitting areas and a non-emission area adjacent to the plurality of light emitting areas, and a touch screen disposed on the base surface. includes

The touch screen may include first conductive patterns disposed on the base surface, overlapping the non-emission area, disposed on the base surface, covering the first conductive patterns, and in the plurality of light emission areas. A first insulating layer having a plurality of corresponding first openings defined thereon is disposed on the first insulating layer, and second conductive patterns overlapping the non-emission region are disposed on the first insulating layer, and the first insulating layer is disposed on the first insulating layer. a second insulating layer covering the second conductive patterns and a plurality of color filters, each of which is disposed inside a corresponding first opening of the plurality of first openings.

A plurality of second openings corresponding to the plurality of light emitting regions may be defined in the second insulating layer.

Each of the plurality of color filters may extend inside a corresponding second opening of the plurality of second openings.

Each of the first insulating layer and the second insulating layer may be a black matrix. The second insulating layer may overlap the plurality of color filters.

The second insulating layer may further include a black matrix layer in which a plurality of transmission openings corresponding to the plurality of light emitting regions are defined.

Each of the first conductive patterns and the second conductive patterns may have a mesh shape in which a plurality of openings are defined.

The first conductive patterns may include first touch electrodes extending in a first direction and arranged in a second direction crossing the first direction, and each of the first touch electrodes may have a plurality of touch openings defined therein.

The second conductive patterns may include second touch electrodes extending in the second direction and arranged in the first direction, and each of the second touch electrodes may have a plurality of touch openings defined therein.

Each of the first touch electrodes includes first sensor units arranged in the first direction and first connection units each connecting two adjacent first sensor units among the first sensor units, and the first conductive pattern The sensor units may further include second sensor units disposed adjacent to the first sensor units.

Each of the second conductive patterns may include second connection parts connecting two second sensor parts adjacent in the second direction among the second sensor parts through through holes penetrating the first insulating layer.

The display panel may include a base substrate, a circuit layer disposed on the base substrate, an organic light emitting device layer disposed on the circuit layer, and a thin film encapsulation layer encapsulating the organic light emitting device layer.

The thin film encapsulation layer may provide the base surface. The thin film encapsulation layer may include a lower inorganic thin film in contact with the organic light emitting device layer, organic thin films disposed on the base surface, and upper inorganic thin films alternately stacked with the organic thin films.

Third openings or grooves corresponding to the plurality of first openings may be defined in the thin film disposed on the uppermost of the alternately stacked upper organic thin films and the upper inorganic thin films. Each of the plurality of color filters may extend inside a corresponding third opening among the third openings or into a corresponding groove among the grooves.

The display panel may further include a buffer layer providing the base surface.

The buffer layer may have third openings or grooves corresponding to the plurality of first openings.

Each of the plurality of color filters may extend inside a corresponding third opening among the third openings or into a corresponding groove among the grooves.

As described above, since the color filters are respectively disposed inside the openings of the insulating layer of the touch screen, the display device becomes slim. Color filters reduce external and reflectance by filtering out external light. Since the touch electrodes have a mesh shape, tensile stress/compressive stress applied to the touch electrodes is reduced, and as a result, cracks of the touch electrodes can be prevented.

1A is a perspective view illustrating a first operation of a flexible display device according to an exemplary embodiment of the present invention.
1B is a perspective view illustrating a second operation of the flexible display device according to an exemplary embodiment of the present invention.
2A is a cross-sectional view illustrating a first operation of a flexible display device according to an exemplary embodiment of the present invention.
2B is a cross-sectional view illustrating a second operation of the flexible display device according to the exemplary 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 exemplary embodiment.
6A and 6B are partial cross-sectional views of an organic light emitting display panel according to an exemplary embodiment.
7A to 7C are cross-sectional views of a thin film encapsulation layer according to an embodiment of the present invention.
8A and 8B are cross-sectional views of a display device according to an exemplary embodiment.
9A and 9B are plan views of conductive layers of a touch screen according to an embodiment of the present invention.
FIG. 10A is a partially enlarged view of area AA of FIG. 9A .
10B-10F are each a partial cross-sectional view of FIG. 10A in accordance with an embodiment of the present invention.
11A is a partially enlarged view of a region BB of FIG. 9B .
11B is a partial cross-sectional view of FIG. 11A .
12A is a partially enlarged view of a CC region of FIGS. 9A and 9B .
Fig. 12B is a partial cross-sectional view of Fig. 12A;
13A and 13B are partial cross-sectional views of a display device according to an exemplary embodiment.
14A and 14B are plan views of conductive layers of a touch screen according to an embodiment of the present invention.
14C is a partially enlarged view of a CC region of FIGS. 14A and 14B .
14D is a partial cross-sectional view of FIG. 14C.
15A and 15B are plan views of conductive layers of a touch screen according to an embodiment of the present invention.
FIG. 16A is a partially enlarged view of a region DD of FIGS. 15A and 15B .
16B is a partially enlarged view of FIG. 16A .
16C and 16D are partial cross-sectional views of FIG. 16A .

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the scales of some components are exaggerated or reduced in order to clearly express various layers and regions. Like reference numerals refer to like elements throughout.

In the drawings, the scales of some components are exaggerated or reduced in order to clearly express various layers and regions. Like reference numerals refer to like elements throughout. And, that a layer is formed (disposed) 'on' another layer includes not only the case where the two layers are in contact with each other, but also the case where the other layer exists between the two layers. In addition, although one surface of a certain layer is shown to be flat in the drawings, it is not necessarily required to be flat, and a step may occur on the surface of the upper layer due to the surface shape of the lower layer in the lamination process.

1A is a perspective view illustrating a first operation of a flexible display device DD according to an exemplary embodiment. 1B is a perspective view illustrating a second operation of the flexible display device DD according to an exemplary embodiment. 2A is a cross-sectional view of the flexible display device DD according to an exemplary embodiment in a first operation. 2B is a cross-sectional view illustrating a second operation of the flexible display device DD according to an exemplary embodiment.

The display surface IS on which the image IM is displayed is parallel to a surface defined by the first direction axis DR1 and the second direction 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. A front surface and a rear surface of each member are divided by a third direction axis DR3 . However, the directions indicated by the first to third direction axes DR1 , DR3 , and DR3 may be converted into other directions as a relative concept. Hereinafter, the first to third directions refer to the same reference numerals as directions indicated by the first to third direction axes DR1 , DR3 , and DR3 , respectively.

1A to 2B illustrate a foldable display device as an example of the flexible display device DD. However, the present invention is not limited thereto, and the flexible display device DD may be a curved flexible display device having a predetermined curvature or a rollable flexible display device that is rolled up. Although not shown separately, the flexible display device DD of the present invention may be used in large electronic devices such as televisions and monitors, as well as small and medium-sized electronic devices such as mobile phones, tablets, car navigation systems, game machines, and smart watches.

As illustrated in FIG. 1A , the display surface IS of the flexible display device DD may be divided into a plurality of regions. The flexible display device DD includes a display area DA in which an image IM is displayed and a non-display area NDA adjacent to the display area DA. The non-display area NDA is an area in which an image is not displayed. 1A shows a vase as an example of the image IM. As an example, the display area DA may have a rectangular shape. The non-display area NDA may surround the display area DA. However, the present invention is not limited thereto, and the shape of the display area DA and the shape of the non-display area NDA may be relatively designed.

1A and 1B , the display device DD has a bending area BA that is bent along a bending axis BX, a first non-bending area NBA1 and a second non-bending area that are not bent along the bending axis BX. (NBA2) can be defined. The inner-bending may be performed so that the display surface IS of the first non-bending area NBA1 and the display surface IS of the second non-bending area NBA2 face each other. The display device DD may be outer-bending according to a user's manipulation.

In an embodiment of the present invention, the display device DD may include a plurality of bending areas BA. In addition, the bending area BA may be defined to correspond to a shape in which the user manipulates the display device DD. For example, unlike FIG. 1B , the bending area BA may be defined in parallel to the first direction axis DR1 or may be defined in a diagonal direction. The area of the bending area BA is not fixed and may be determined according to the bending radius BR (refer to FIG. 2B ).

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 shown separately, the display device DD may further include a protection member coupled to the window member WM to protect the display panel DP and the touch screen TS. In an embodiment of the present invention, the window member WM may be omitted or may be integrated into the touch screen TS.

The display panel DP generates an image IM (refer to 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 type thereof is not limited. In the present invention, an organic light emitting display panel is exemplarily described. A detailed description of the organic light emitting display panel will be described later.

The touch screen TS acquires coordinate information of an external input. The touch screen TS is disposed on a base surface provided by the display panel DP. In this embodiment, the touch screen TS is manufactured by a continuous process with the display panel. Accordingly, a separate adhesive member disposed between the touch screen TS and the display panel DP may be omitted.

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

In this embodiment, the touch screen TS reduces external light reflection. This is because the touch screen TS includes color filters as will be described later. The color filters of the touch screen TS may replace optical films such as polarizing films and λ/4 wavelength films that prevent reflection of external light.

The window member WM may be coupled to the touch screen TS by 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 rear surface of the base member WM-BS to define a bezel area of the display device DD, that is, a non-display area NDA (refer to FIG. 1A ).

The bezel layer WM-BZ is a colored organic layer and may be formed by, for example, 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 an anti-fingerprint layer, an anti-reflection layer, and a hard coating layer.

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 will be 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 in a plan view. The display area DA and the non-display area NDA of the organic light emitting display panel DP are the display area DA and the non-display area NDA of the display device DD defined by the bezel layer WM-BZ. is not necessarily the same as , and may be changed according to the structure/design of the organic light emitting display panel DP.

As illustrated in FIG. 3 , the organic light emitting display panel DP includes a plurality of pixels PX disposed in the display area DA. Although the plurality of pixels PX arranged in a matrix is illustrated, the present invention is not limited thereto. The plurality of pixels PX may be disposed in a non-matrix shape, for example, a pentile shape.

4 exemplarily shows an equivalent circuit of one pixel PXij connected to the i-th scan line SLi and the j-th source line DLj. 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 the present 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 voltage ELVDD applied to the power 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 j-th source line DLj in response to the scan signal applied to the i-th scan line SLi. The capacitor Cap is charged with a voltage corresponding to the data signal received from the first transistor TR1 . The second transistor TR2 controls the driving current flowing through the organic light emitting diode 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 exemplary embodiment. FIG. 5 illustrates a portion of the display area DA (refer to FIG. 3 ). 6A is a cross-sectional view of a portion corresponding to the first transistor TR1 and the capacitor Cap of the equivalent circuit shown in FIG. 4 , and FIG. 6B is the second transistor TR2 and the equivalent circuit shown in FIG. 4 . A cross-section of a portion corresponding to an organic light emitting diode (OLED) is shown.

As shown in FIG. 5 , the organic light emitting display panel DP includes a plurality of light emitting regions PXA-R, PXA-G, PXA-B) and the non-emission area (NPXA). FIG. 5 exemplarily illustrates three types of light emitting regions PXA-R, PXA-G, and PXA-B arranged in a matrix form. Organic light emitting devices emitting three different colors may be respectively disposed in the three types of light emitting areas PXA-R, PXA-G, and PXA-B.

In an embodiment of the present invention, organic light emitting devices emitting white colors may be respectively disposed in the three types of light emitting areas PXA-R, PXA-G, and PXA-B. In this case, three types of color filters of different colors may overlap each of the three types of emission areas PXA-R, PXA-G, and PXA-B.

The non-emission area NPXA includes the first non-emission areas NPXA-1 and the first non-emission areas NPXA-1 surrounding the light-emitting areas PXA-R, PXA-G, and PXA-B. It may be divided into a second non-emission area NPXA-2 defining a boundary. A driving circuit of the sub-pixel corresponding to each of the first non-emission areas NPXA-1, for example, transistors TR1 and TR2 (refer to FIG. 4 ) or a capacitor Cap (refer to FIG. 4 ) may be disposed. Signal lines, for example, a scan line SLi (refer to FIG. 4 ), a source line DLj (refer to FIG. 4 ), and a power line PL (refer to FIG. 4 ) may be disposed in the second non-emission area NPXA-2 . . However, the present invention is not limited thereto, and the first non-emission areas NPXA-1 and the second non-emission areas NPXA-2 may not be distinguished from each other.

Although not shown separately, according to an embodiment of the present invention, each of the emission regions PXA-R, PXA-G, and PXA-B may have a shape similar to a rhombus. According to an embodiment of the present invention, organic light emitting devices emitting four different colors may be respectively disposed in the four types of light emitting regions that are repeatedly arranged.

In the present specification, "emitting light of a predetermined color from the light emitting region" means not only emitting the light generated from the corresponding light emitting device as it is, but also converting the color of the light generated from the corresponding light emitting device and emitting it. include

6A and 6B , the organic light emitting display panel DP includes a base substrate SUB, a circuit layer DP-CL, an organic light emitting device layer DP-OLED, and a thin film encapsulation layer TFE. includes The circuit layer DP-CL may include a plurality of conductive layers and a plurality of insulating layers, and the organic light emitting diode layer DP-OLED may include a plurality of conductive layers and a plurality of functional organic layers. The thin film encapsulation layer TFE may include 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. A semiconductor pattern AL1 (hereinafter, referred to as a first semiconductor pattern) of the first transistor TR1 and a semiconductor pattern AL2 (hereinafter, 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 shown separately, functional layers may be further disposed on one surface of the base substrate SUB. The functional layers include at least one of a barrier layer and a buffer layer. The first semiconductor pattern AL1 and the second semiconductor pattern AL2 may be disposed on a barrier layer or a buffer layer.

A 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) of the first transistor TR1 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. The first electrode E1 of the 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 may be manufactured according to the same photolithography process as the scan line SLi (refer to FIG. 4 ). In other words, the first electrode E1 may be made of the same material as the scan line.

A second insulating layer 14 is disposed on the first insulating layer 12 to cover the first control electrode GE1 , 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.

A source line DLj (refer to FIG. 4 ) and a power line PL (refer to 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 is branched from the power line PL.

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

The first input electrode SE1 and the first output electrode DE1 form a first through hole CH1 and a second through hole CH2 passing through the first insulating layer 12 and the second insulating layer 14 . are respectively connected to the first semiconductor pattern AL1 through the 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) penetrating the second insulating layer 14 . The second input electrode SE2 and the second output electrode DE2 form a third through hole CH3 and a fourth through hole CH4 passing through the first insulating layer 12 and the second insulating layer 14 . through the second semiconductor pattern AL2. Meanwhile, in another embodiment of the present invention, the first transistor TR1 and the second transistor TR2 may be implemented by being modified into a bottom gate structure.

The third insulating layer 16 covering the first input electrode SE1 , the first output electrode DE1 , the second input electrode SE2 , and the second output electrode DE2 on the second insulating layer 14 . ) is placed. The third insulating layer 16 includes an organic layer and/or an inorganic layer. In particular, the third insulating layer 16 may include an organic material to provide a flat 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 layer PXL. The pixel defining layer PXL is like another insulating layer. The opening OP of FIG. 6B may correspond to the openings OP-R, OP-G, and OP-B of FIG. 5 .

The anode AE is connected to the second output electrode DE2 through the fifth through hole CH5 penetrating the third insulating layer 16 . The opening OP of the pixel defining layer PXL exposes at least a portion of the anode AE. The hole control layer HCL may be formed in common in the emission regions PXA-R, PXA-G, PXA-B (refer to FIG. 5 ) and the non-emission region NPXA (refer to FIG. 5 ). An organic emission 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 transport layer, and the electron control layer ECL includes at least an electron transport layer. Thereafter, the cathode CE may be formed in common in the light emitting areas PXA-R, PXA-G, and PXA-B and the non-emission area NPXA. Depending on the layer structure of the cathode CE, it may be formed by deposition or sputtering.

The emission area PXA may be defined as an area in which light is generated. The emission area PXA may be defined to correspond to the anode AE or the emission layer EML of the organic light emitting diode OLED.

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

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

The thin film encapsulation layer includes at least two inorganic thin films and an organic thin film disposed therebetween. The inorganic thin film protects the organic light emitting diode (OLED) from moisture, and the organic thin film protects the organic light emitting element (OLED) from foreign substances such as dust particles.

As shown in FIG. 7A , the thin film encapsulation layer TFE1 may include n inorganic thin films IOL1 to IOLn including the first inorganic thin film IOL1 in contact with the cathode CE (refer to FIG. 6B ). . The first inorganic thin film IOL1 may be 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 may be defined as upper inorganic thin films.

The thin film encapsulation layer TFE1 may include n organic thin films OL1 to OLn, and the n organic thin films OL1 to OLn may be alternately disposed 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 a thickness greater than that of the n inorganic thin films IOL1 to IOLn on average.

Each of the n inorganic thin films IOL1 to IOLn may be a single layer including one material or may have a multilayer each including a different material. Each of the n organic thin films OL1 to OLn may be formed by depositing organic monomers. The organic monomers may include 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.

As shown in FIG. 7B , the thin film encapsulation layer TFE2 is a sequentially stacked first inorganic thin film IOL1 , a first organic thin film OL1 , a second inorganic thin film IOL2 , and 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, and a third inorganic thin film (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 that 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 a low-power condition, and the second sub-layer S200 may be deposited under a high-power condition. Each of the first sub-layer S100 and the second sub-layer S200 may be a silicon nitride layer.

8A and 8B are cross-sectional views of a display device according to an exemplary embodiment. The display panels DP and DP-1 are briefly illustrated. 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 , and a second and an insulating layer TS-IL2. Although not shown, the touch screen TS further includes a plurality of color filters.

Each of the first conductive layer TS-CL1 and the second conductive layer TS-CL2 may have a single-layer structure or a multi-layer structure stacked along the third direction axis DR3 . The multi-layered conductive layer may include a transparent conductive layer and at least one metal layer. The transparent conductive layer may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO), PEDOT, metal nanowires, or graphene. The metal layer may include molybdenum, silver, titanium, copper, aluminum, and alloys thereof.

Each of the first conductive layer TS-CL1 and the second conductive layer TS-CL2 includes a plurality of patterns. Hereinafter, it will be described that the first conductive layer TS-CL1 includes first conductive patterns and the second conductive layer TS-CL2 includes second conductive patterns. The first conductive patterns and the second conductive patterns may include touch electrodes and touch signal lines.

Each of the first insulating layer TS-IL1 and the second insulating layer TS-IL2 may include an inorganic material or an organic material. 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-based resin, an epoxy-based resin, a urethane-based resin, a cellulose-based resin, and a perylene-based resin.

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

The display panel DP-1 illustrated in FIG. 8B may further include a buffer layer BFL disposed on the thin film encapsulation layer TFE compared to the display panel DP illustrated in FIG. 8A . The buffer layer BFL provides the 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. FIGS. 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. admit. FIG. 10A is a partially enlarged view of area AA of FIG. 9A . 10B-10F are each a partial cross-sectional view of FIG. 10A in accordance with an embodiment of the present invention. 11A is a partially enlarged view of a region BB of FIG. 9B . 11B is a partial cross-sectional view of FIG. 11A . 12A is a partially enlarged view of a CC region of FIGS. 9A and 9B . Fig. 12B is a partial cross-sectional view of Fig. 12A; 10B, 11B, and 12B show the organic light emitting device layer (DP-OLED) briefly. The partial cross-section shown in FIG. 11B corresponds to the partial cross-section shown in FIG. 10B . In an embodiment of the present invention, the partial cross-section corresponding to II-II′ of FIG. 11A may be transformed into the form shown in FIGS. 10C to 10F .

In this embodiment, a two-layer capacitive touch screen is illustrated as an example. A two-layer capacitive touch screen may acquire coordinate information of a touched point by a self-capacitance method or a mutual capacitance method. A method of driving the touch screen for obtaining coordinate information is not particularly limited.

As illustrated 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. 9A exemplarily shows three first touch electrodes TE1-1 to TE1-3 and first touch signal lines SL1-1 to SL1-3 connected thereto.

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 has a mesh shape in which a plurality of touch openings are defined. A detailed description of the mesh shape will be described later.

Each of the first touch electrodes TE1-1 to TE1-3 includes a plurality of first sensor parts SP1 and a plurality of first connection parts CP1. The first sensor units SP1 are arranged in the first direction DR1 . Each of the first connection parts CP1 connects two adjacent first sensor parts SP1 among the first 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 illustrated in FIG. 9B , the second conductive patterns may include second touch electrodes TE2-1 to TE2-3 and second touch signal lines SL2-1 to SL2-3. 9B exemplarily shows three second touch electrodes TE2-1 to TE2-3 and second touch signal lines SL2-1 to SL2-3 connected thereto.

The second touch electrodes TE2-1 to TE2-3 insulate and cross 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 parts SP2 and a plurality of second connection parts CP2. The second sensor units SP2 are arranged in the second direction DR2 . Each of the second connection parts CP2 connects two adjacent 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 to SL2-3 may have the same layer structure as the second touch electrodes TE2-1 to TE2-3.

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

In the present invention, the shapes of the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 including the sensor unit and the connection unit are merely exemplary and are limited thereto. doesn't happen It is sufficient if the connection part is defined as a portion where the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 intersect, and the sensor part is 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 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 may have a bar shape having a constant width.

As illustrated 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 vertical parts SP1-C extending in the first direction DR1 and a plurality of first horizontal parts SP1-L extending in the second direction DR2. include The plurality of first vertical parts SP1-C and the plurality of first horizontal parts SP1-L may be defined as mesh lines. The line width of the mesh line may be several micrometers.

The plurality of first vertical parts SP1-C and the plurality of first horizontal parts 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 including a plurality of touch openings TS-OP. Although it is illustrated that the touch openings TS-OP correspond to the emission areas PXA one-to-one, the present invention is not limited thereto. One touch opening TS-OP may correspond to two or more emission areas PXA.

As shown in FIG. 10B , the first insulating layer TS-IL1 is disposed on the base surface BS to cover the first sensor unit SP1 , that is, the first horizontal part SP1 -L. Although not shown separately, the first insulating layer TS-IL1 also covers the first connection part CP1 and the first touch signal lines SL1-1 to SL1-3. In this embodiment, the base surface BS is provided by a thin film encapsulation layer TFE. The first insulating layer TS-IL1 overlaps the non-emission area NPXA. A plurality of first insulating openings IL1 -OP corresponding to the plurality of light emitting areas PXA are defined in the first insulating layer TS-IL1 . The plurality of light emitting areas PXA and the plurality of first insulating openings IL1 -OP may have the same planar shape. In other words, the first insulating layer TS-IL1 has substantially the same shape as the non-emission region NPXA (eg, the first insulating layer TS-IL1 has the non-emission region NPXA in the first direction DR1 and have the same widths in the second direction DR2). However, the present invention is not limited thereto, and the plurality of light emitting areas PXA and the plurality of first insulating openings IL1 -OP may have different shapes.

The color filters CF may be respectively disposed inside the plurality of first insulating openings IL1 -OP. The color filters CF may be organic patterns including dyes or pigments. The color filters CF may include a plurality of groups of color filters. For example, the color filters CF may include red color filters, green color filters, and blue color filters.

Colors of the color filters CF may be differently selected for each of the first insulating openings IL1 -OP in consideration of colors of light generated from the organic light emitting diodes OLED. For example, the red color filters are disposed to overlap the organic light emitting diodes (OLED) generating red light, the green color filters are disposed to overlap the organic light emitting devices (OLED) generating the green light, and the blue color filters are It is disposed to overlap the organic light emitting diodes (OLEDs) generating blue light.

The color filters CF not only transmit light generated from the organic light emitting diodes OLED, but also reduce reflectance of external light. In addition, as the external light passes through the color filters CF, the amount of light is reduced to about 1/3. Light passing through the color filters CF is partially extinguished and partially reflected from the organic light emitting diode layer (DP-OLED), the thin film encapsulation layer (TFE), and the like. The reflected light is incident on the color filters CF. As the reflected light passes through the color filters CF, the luminance is decreased. As a result, only a portion of the external light is reflected from the display device.

The second insulating layer TS-IL2 is disposed on the first insulating layer TS-IL1 . A plurality of second insulating openings IL2-OP corresponding to the plurality of first insulating openings IL1 -OP are defined in the second insulating layer TS-IL2 . The first insulating layer TS-IL1 in which the plurality of first insulating openings IL1-OP is defined and the second insulating layer TS-IL2 in which the plurality of second insulating openings IL2-OP are defined are may have the same shape. After sequentially stacking the first insulating layer TS-IL1 and the second insulating layer TS-IL2, the corresponding first insulating opening IL1-OP and the second insulating opening IL2-OP are processed through a single process. ) can be formed simultaneously. After the first insulating opening IL1-OP and the second insulating opening IL2-OP are formed, the color filters CF may be formed. The color filters CF may be formed by a printing method such as inkjet printing or a photolithography method.

As shown in FIG. 10C , the second insulating layer TS-IL2 is disposed on the first insulating layer TS-IL1 . Unlike in FIG. 10B , the plurality of second insulating openings IL2-OP is not defined. The second insulating layer TS-IL2 may overlap the color filters CF.

As shown in FIG. 10D , as the first insulating opening IL1-OP and the second insulating opening IL2-OP are simultaneously formed, the first insulating opening IL1-OP and the second insulating opening IL2-OP are formed at the same time. ) can be aligned with each other. The color filter CF is simultaneously disposed inside the first insulating opening IL1-OP and the second insulating opening IL2-OP. The color filter CF has a shape extending from the inside of the first insulating opening IL1-OP to the inside of the second insulating opening IL2-OP. The thickness of the color filter CF may be substantially equal to the sum of the thicknesses of the first insulating layer TS-IL1 and the second insulating layer TS-IL2 .

As illustrated in FIG. 10E , each of the first insulating layer TS-BM1 and the second insulating layer TS-BM2 may be a black matrix. The black matrix BM may include an organic material having a high light absorption rate. The black matrix BM may include a black pigment or a black dye. Although not shown separately, the first insulating layer TS-IL1 of FIG. 10C may also be a black matrix BM, and each of the first insulating layer TS-IL1 and the second insulating layer TS-IL2 of FIG. 10D . may be a black matrix (BM).

As illustrated in FIG. 10F , a black matrix layer BM disposed on the second insulating layer TS-IL2 may be further included. The black matrix layer BM may include an organic material having a high light absorption rate. A plurality of transmission openings BM-OP corresponding to the emission areas PXA are defined in the black matrix layer BM. In an embodiment of the present invention, the plurality of transmission openings BM-OP may further cover inner walls of each of the first insulating opening IL1-OP and the second insulating opening IL2-OP. 11A and 11B , the second sensor unit SP2 overlaps the non-emission area NPXA. The second sensor unit SP2 includes a plurality of second vertical parts SP2-C extending in the first direction DR1 and a plurality of second horizontal parts SP2-L extending in the first direction DR1 . include

The plurality of second vertical portions SP2-C and the plurality of second horizontal 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. The second insulating layer TS-IL2 is disposed on the first insulating layer TS-IL1 to cover the second sensor unit SP2 .

12A illustrates a state in which FIGS. 9A and 9B overlap. 12A and 12B , the first connection part CP1 includes the third vertical parts CP1-C1 and CP1-C2 and the third vertical parts CP1-C1 disposed on the thin film encapsulation layer TFE. , CP1-C2 may include third horizontal parts CP1-L connecting them. Although the two third vertical parts CP1-C1 and CP1-C2 are illustrated, the present invention is not limited thereto.

The second connection part CP2 connects the fourth horizontal parts CP2-L1 and CP2-L2 and the fourth horizontal parts CP2-L1 and CP2-L2 disposed on the first insulating layer TS-IL1. It may include fourth vertical parts CP2-C. The first connection part CP1 may have a mesh shape, and the second connection part CP2 may also have a mesh shape.

As described above, the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 have a mesh shape, and the first and second insulating layers TS The flexibility of the flexible display device DD is improved by defining the plurality of first and second insulating openings IL1-OP and IL2-OP in -IL1 and TS-IL2. 1B and 2B , when the flexible display device DD is bent, applied to the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 are applied. As the tensile stress/compressive stress is reduced, their cracking can be prevented. The first and second insulating openings IL1-OP and IL2-OP are defined to form the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3. The applied tensile stress/compressive stress can be further reduced.

13A and 13B are partial cross-sectional views of a display device according to an exemplary embodiment. 13A and 13B show cross-sections corresponding to FIG. 10B. In FIG. 13A , the configuration below the thin film encapsulation layer TFE1-1 is not shown. Hereinafter, a detailed description of the same configuration as that described with reference to FIGS. 1 to 12B will be omitted.

13A , the thin film encapsulation layer TFE1-1 may include n inorganic thin films IOL1 to IOLn including the first inorganic thin film IOL1 . The thin film encapsulation layer TFE1 includes n inorganic thin films IOL1 to IOLn and n organic thin films OL1 to OLn alternately disposed.

At least the uppermost thin film may have encapsulation openings TFE-OP or encapsulation grooves TFE-G corresponding to the plurality of first insulating openings IL1 -OP. In this embodiment, the thin film disposed on the uppermost side may be the nth organic thin film OLn. The encapsulation grooves TFE-G are indicated by dotted lines in FIG. 13A , and are formed by removing a portion of the uppermost thin film in the third direction DR3 .

The color filter CF is disposed inside the encapsulation openings TFE-OP or inside the encapsulation grooves TFE-G. The color filter CF is simultaneously disposed inside the first insulating opening IL1 -OP and inside the encapsulation openings TFE-OP or inside the encapsulation grooves TFE-G. The color filter CF has a shape extending from the inside of the first insulating opening IL1 -OP to the inside of the encapsulation openings TFE-OP or the inside of the encapsulation grooves TFE-G.

As shown in FIG. 13B , buffer openings BFL-OP or buffer grooves BFL-G corresponding to the plurality of first insulating openings IL1-OP are defined in the buffer layer BFL-1. can The buffer grooves BFL-G are indicated by dotted lines in FIG. 13B , and are formed by removing a portion of the buffer layer BFL-1 in the third direction DR3 .

The color filter CF is disposed inside the buffer openings BFL-OP or inside the buffer grooves BFL-G. The color filter CF is simultaneously disposed inside the first insulating opening IL1-OP and inside the buffer openings BFL-OP or inside the buffer grooves BFL-G. The color filter CF has a shape extending from the inside of the first insulating opening IL1-OP to the inside of the buffer openings BFL-OP or the inside of the buffer grooves BFL-G.

Although not shown separately, the second insulating layer TS-IL2 and the color filter CF shown in FIGS. 13A and 13B may be deformed as shown in FIGS. 10C to 10F .

The above-described encapsulation openings TFE-OP, encapsulation grooves TFE-G, buffer openings BFL-OP, and buffer grooves BFL-G further improve flexibility of the flexible display device.

14A and 14B are plan views of conductive layers of the touch screen TS-1 according to an embodiment of the present invention. 14C is a partially enlarged view of a CC region of FIGS. 14A and 14B . 14D is a partial cross-sectional view of FIG. 14C. Hereinafter, a detailed description of the same configuration as that described with reference to FIGS. 1 to 13B will be omitted.

In this embodiment, a one-layer capacitive touch screen is illustrated as an example. It may be driven in a self-capacitance method, and a driving method of the touch screen for obtaining coordinate information is not particularly limited.

14A , the first conductive patterns include first touch electrodes TE1-1 to TE1-3, first touch signal lines SL1-1 to SL1-3, and second touch electrodes TE1-1 to TE1-3. It may include 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 parts SP1 and a plurality of first connection parts 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 shown separately, each of the regions AA and BB may have the structure of FIGS. 10B to 10F in cross-section.

14B , the second conductive patterns include a plurality of second connection parts CP2 of the second touch electrodes TE2-1 to TE2-3. The second connection parts CP2 have a bridge function.

14C and 14D , the second connection part CP2 has a first through hole TS-CH1 and a second through hole TS-CH2 passing through the first insulating layer TS-IL1. Through the second sensor units SP2, two adjacent second sensor units SP2 are electrically connected in the second direction DR2.

15A and 15B are plan views of conductive layers of the touch screen TS-2 according to an embodiment of the present invention. FIG. 16A is a partially enlarged view of a region DD of FIGS. 15A and 15B . 16B is a partially enlarged view of FIG. 16A . 16C and 16D are partial cross-sectional views of FIG. 16A . Hereinafter, detailed descriptions of the same components as those described with reference to FIGS. 1 to 14C will be omitted.

15A and 15B , the first conductive patterns may include first touch electrodes TE1-1 to TE1-3 and first auxiliary electrodes SPE1. Each of the first touch electrodes TE1-1 to TE1-3 includes a plurality of first sensor parts SP1 and a plurality of first connection parts CP1. The second conductive patterns may include second touch electrodes TE2-1 to TE2-3 and second auxiliary electrodes SE1. Each of the second touch electrodes TE2-1 to TE2-3 includes a plurality of second sensor parts SP2 and a plurality of second connection parts CP2.

Each of the first auxiliary electrodes SPE1 overlaps a corresponding second sensor unit among the plurality of second sensor units SP2 , and each of the second auxiliary electrodes SPE2 is one of the plurality of first sensor units SP1 . It may overlap the corresponding first sensor unit. The first auxiliary electrodes SPE1 and the second auxiliary electrodes SPE2 may have a mesh shape. Each of the first auxiliary electrodes SPE1 is electrically connected to a corresponding second sensor unit, and each of the second auxiliary electrodes SPE2 is electrically connected to a corresponding first sensor unit. Accordingly, the resistance of the first touch electrodes TE1-1 to TE1-3 and the second touch electrodes TE2-1 to TE2-3 is 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 SPE2 may be defined as the first touch electrode. The first sensor parts SP1 correspond to the lower sensor part of the first touch electrode, the plurality of first connection parts CP1 correspond to the lower connection parts, and the second auxiliary electrodes SPE2 correspond to the upper sensor part. may be applicable. Similarly, a combination of the second sensor units SP2 , the plurality of second connection units CP2 , and the first auxiliary electrodes SPE1 may be defined as the second touch electrode.

16A and 16B show a connection relationship between the second auxiliary electrode SPE2 and the first sensor unit SP1 in detail. The first sensor unit SP1 is illustrated by a dotted line, and the second auxiliary electrode SPE2 is illustrated by a solid line. Although it is illustrated that the line width of the second auxiliary electrode SPE2 is greater than the line width of the first sensor unit SP1, the present invention is not limited thereto. The line widths of the second auxiliary electrode SPE2 and the first sensor unit SP1 may be the same. The second auxiliary electrode SPE2 may overlap the first sensor unit SP1 and may not overlap the first connection unit CP1 .

16C and 16D , the second auxiliary electrode SPE2 and the first sensor unit SP1 may be connected through a plurality of auxiliary through-holes SCH. Although it is illustrated that the thin film encapsulation layer TFE provides the flat base surface BS in the present exemplary embodiment, the present invention is not limited thereto. Another layer, such as a buffer layer, may provide the base surface BS. Although not shown separately, the second insulating layer TS-IL2 and the color filter CF shown in FIGS. 16C and 16D may be deformed as shown in FIGS. 10C to 10F .

Although the above has been described with reference to the preferred embodiment of the present invention, those skilled in the art or those having ordinary knowledge in the technical field will not depart from the spirit and technical scope of the present invention described in the claims to be described later. It will be understood that various modifications and variations of the present invention can be made without departing from the scope of the present invention.

Accordingly, 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: No window TS: Touch screen
DP: display panel

Claims (20)

a display panel providing a base surface and including a plurality of light emitting areas and a non-emission area adjacent to the plurality of light emitting areas;
It includes a touch screen disposed on the base surface,
The touch screen is
first conductive patterns disposed on the base surface and overlapping the non-emission area;
a first insulating layer disposed on the base surface, covering the first conductive patterns, and defining a plurality of first openings corresponding to the plurality of light emitting regions;
second conductive patterns disposed on the first insulating layer and overlapping the non-emission region;
a second insulating layer disposed on the first insulating layer, covering the second conductive patterns, and defining a plurality of second openings corresponding to the plurality of light emitting regions;
a black matrix layer disposed on the second insulating layer and having a plurality of transmission openings corresponding to the plurality of light emitting regions defined; and
and a plurality of color filters, each of which is disposed inside at least one of the plurality of first openings and the plurality of second openings and is not disposed inside the plurality of transmission openings. The method of claim 1,
A plurality of second openings corresponding to the plurality of light emitting regions are defined in the second insulating layer. 3. The method of claim 2,
Each of the plurality of color filters extends inside a corresponding second opening of the plurality of second openings. 3. The method of claim 2,
Each of the first insulating layer and the second insulating layer is a black matrix. The method of claim 1,
The second insulating layer overlaps the plurality of color filters. delete The method of claim 1,
Each of the first conductive patterns and the second conductive patterns has a mesh shape in which a plurality of openings are defined. The method of claim 1,
The first conductive patterns include first touch electrodes extending in a first direction and arranged in a second direction crossing the first direction,
A flexible display device, wherein each of the first touch electrodes has a plurality of touch openings defined therein. 9. The method of claim 8,
The second conductive patterns include second touch electrodes extending in the second direction and arranged in the first direction,
Each of the second touch electrodes has a plurality of touch openings defined therein. 9. The method of claim 8,
Each of the first touch electrodes includes first sensor units arranged in the first direction, and first connection units each connecting two adjacent first sensor units among the first sensor units,
The first conductive patterns may further include second sensor units disposed adjacent to the first sensor units. 11. The method of claim 10,
Each of the second conductive patterns includes second connection portions connecting two second sensor portions adjacent in the second direction among the second sensor portions through through holes penetrating the first insulating layer. . The method of claim 1,
The display panel is
base substrate;
a circuit layer disposed on the base substrate;
an organic light emitting device layer disposed on the circuit layer; and
and a thin film encapsulation layer encapsulating the organic light emitting device layer. 13. The method of claim 12,
The thin film encapsulation layer provides the base surface. 14. The method of claim 13,
The thin film encapsulation layer,
a lower inorganic thin film contacting the organic light emitting device layer;
organic thin films disposed on the base surface;
A flexible display device comprising upper inorganic thin films alternately stacked with the organic thin films. 15. The method of claim 14,
Third openings or grooves corresponding to the plurality of first openings are defined in the alternately stacked organic thin film and the thin film disposed on the uppermost side of the upper inorganic thin film,
Each of the plurality of color filters extends inside a corresponding third of the third openings or into a corresponding one of the grooves. 14. The method of claim 13,
and the display panel further includes a buffer layer providing the base surface. 17. The method of claim 16,
In the buffer layer, third openings or grooves corresponding to the plurality of first openings are defined;
Each of the plurality of color filters extends inside a corresponding third of the third openings or into a corresponding one of the grooves. The method of claim 1,
The first conductive patterns are
first touch electrodes in which a plurality of touch openings corresponding to the plurality of first openings are defined; and
and first auxiliary electrodes spaced apart from the first touch electrodes,
The second conductive patterns are
A plurality of touch openings intersecting the first touch electrodes and corresponding to the plurality of first openings are defined, each second electrically connected to the corresponding first auxiliary electrodes among the first auxiliary electrodes. touch electrodes; and
and second auxiliary electrodes, each of which is electrically connected to a corresponding first one of the first touch electrodes. 19. The method of claim 18,
Each of the first touch electrodes includes first sensor units overlapping corresponding second auxiliary electrodes among the second auxiliary electrodes, and each of the first sensor units connecting two adjacent first sensor units among the first sensor units. comprising first connections;
Each of the second touch electrodes is configured to connect second sensor units overlapping corresponding first auxiliary electrodes of the first auxiliary electrodes and two adjacent second sensor units among the second sensor units, respectively. A flexible display device including second connection parts. 20. The method of claim 19,
The corresponding second auxiliary electrodes and the first sensor units are electrically connected to each other through auxiliary through-holes passing through the first insulating layer.

Images