Organic light emitting display device

Abstract

According to one aspect of the present disclosure, an organic light-emitting display device includes: an organic light-emitting display panel including a plurality of sub-pixels; a pattern buffer layer disposed on the organic light-emitting display panel and patterned to overlap at least one of the plurality of sub-pixels; a color filter layer disposed on the pattern buffer layer and including a plurality of color filters corresponding to the plurality of sub-pixels; and a black matrix disposed on the same plane as the pattern buffer layer and dividing the plurality of color filters. Therefore, the generation and spread of cracks when the display device is folded can be effectively suppressed. Therefore, the drivability of the display panel and the reliability of the organic light-emitting display device can be improved.

Description

Technical Field

[0001] The present disclosure relates to an organic light emitting display device, and more particularly, to an organic light emitting display device having improved folding characteristics and reliability by suppressing generation and spread of cracks due to folding. Background Art

[0002] Unlike a liquid crystal display device (LCD) including a backlight, an organic light emitting display device (OLED) does not require a separate light source. Therefore, the organic light emitting display device can be manufactured to be light and thin and has process advantages and low power consumption due to low voltage driving. First, the organic light emitting display device includes a self-luminous element and includes a layer formed of an organic thin film, so that its flexibility and elasticity are superior to other display devices, so it is advantageous to be implemented as a flexible display device.

[0003] Generally, in order to suppress the degradation of visibility and contrast caused by light incident from the outside into the display device, a polarizing plate is provided below the cover member in an organic light-emitting display device. However, recently, as interest in flexible and slim display devices has increased, a display device has been proposed that applies a coated polarizing film having a relatively small thickness instead of a thick polarizing plate. However, there is a problem that the thickness of the coated polarizing film is still large, and if the thickness is reduced, the function and display quality of the polarizing film deteriorate. Therefore, it is difficult to realize a polarizing film for a display device that is pressurized and foldable. Summary of the invention

[0004] In order to reduce the folding stress, a display device has been proposed, which applies an anti-reflection layer in which a color filter layer and a black matrix are integrated instead of a coated polarizing film. The thickness of the anti-reflection layer is less than the thickness of the polarizing plate or the coated polarizing film of the related art, thereby realizing a thinner display device. When the anti-reflection layer is applied, the inorganic film buffer layer is completely deposited under the anti-reflection layer to attach to the components below it while protecting the components of the display device. However, the inorganic film buffer layer has excellent blocking properties, but low flexibility, making the inorganic film buffer layer susceptible to stress. Therefore, when the display device is bent or folded, there is a problem that cracks are easily generated on the inorganic film buffer layer and the cracks spread. In addition, moisture or oxygen penetrates into the crack portion from the outside to degrade the component, and the cracks spread to cause problems in the drive of the display panel, thereby significantly deteriorating the reliability.

[0005] Accordingly, embodiments of the present disclosure are directed to an organic light emitting display device that substantially obviates one or more problems due to limitations and disadvantages of the related art.

[0006] Therefore, one object of the present disclosure is to suppress the generation and spread of cracks due to folding in an organic light-emitting display device in which an anti-reflection layer is applied instead of a polarizing plate or a polarizing film by reducing the stress of an inorganic film buffer layer provided under the anti-reflection layer. Another object to be achieved by the present disclosure is to provide an organic light-emitting display device with a reduced thickness, wherein driving failure and low reliability are improved by suppressing the generation and spread of cracks. In addition, another object to be achieved by the present disclosure is to provide an organic light-emitting display device that reduces folding stress to minimize creases generated in a folded portion and is folded in various forms and folded multiple times.

[0007] Additional features and aspects will be presented in the following description, and in part will be apparent from the specification, or may be learned by the practice of the inventive concept provided herein. Other features and aspects of the inventive concept may be realized and obtained by the structure specifically pointed out in the written description or the structure derivable therefrom, and the claims and drawings thereof.

[0008] To achieve these and other aspects of the inventive concept, as implemented and broadly described, an organic light-emitting display device includes: an organic light-emitting display panel including a plurality of sub-pixels, a pattern buffer layer disposed on the organic light-emitting display panel and patterned to overlap with at least one of the plurality of sub-pixels, a color filter layer disposed on the pattern buffer layer and including a plurality of color filters corresponding to the plurality of sub-pixels, and a black matrix disposed on the same plane as the pattern buffer layer and dividing the plurality of color filters. That is, according to the organic light-emitting display device according to the exemplary embodiment of the present disclosure, the buffer layer disposed under the color filter layer is patterned to have a predetermined shape, thereby reducing the stress of the buffer layer when folded. Therefore, the generation and spread of cracks when the display device is folded can be effectively suppressed.

[0009] In another aspect, an organic light-emitting display device including a plurality of sub-pixels includes: a substrate, a thin film transistor disposed on the substrate, an organic light-emitting element disposed on the thin film transistor, an encapsulation layer disposed on the organic light-emitting element, and an anti-reflection layer disposed on the encapsulation layer. The anti-reflection layer includes: a pattern buffer layer patterned to overlap with at least one of the plurality of sub-pixels and including at least one opening area, a color filter layer disposed on the pattern buffer layer, and a black matrix disposed in the opening area. According to an organic light-emitting display device according to another exemplary embodiment of the present disclosure, the reflectivity of external light is reduced by the anti-reflection layer, so that the degradation of visibility and contrast due to external light can be minimized. In addition, the polarizing plate and the bonding layer are omitted, so that the thickness of the display device can be reduced. In addition, the buffer layer disposed on the encapsulation layer is patterned to have a predetermined shape to effectively relieve folding stress. When the organic light-emitting display device is folded, the generation and spread of cracks on the buffer layer susceptible to stress can be suppressed.

[0010] Additional details of exemplary embodiments are included in the detailed description and the accompanying drawings.

[0011] According to the present disclosure, instead of the polarizing plate or polarizing film of the related art, an anti-reflection layer including a patterned buffer layer, a color filter layer and a black matrix is ​​applied to an organic light-emitting display device, so that the thickness of the display device can be reduced while effectively reducing the external light reflectivity. In addition, the buffer layer disposed under the color filter layer has a patterned structure, thereby reducing the stress applied to the buffer layer. Therefore, the generation and spread of cracks when the display device is folded can be effectively suppressed. By doing so, the driving failure caused by the generation and spread of cracks is solved, and the reliability of the organic light-emitting display device can be improved.

[0012] According to the present disclosure, the stress of the buffer layer, which is relatively susceptible to stress, is effectively reduced to minimize the crease generated in the folded portion. In addition, an organic light-emitting display device that can be folded in various forms and folded multiple times while maintaining high display quality can be easily realized.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the inventive concepts as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated and constitute a part of this application. The accompanying drawings illustrate embodiments of the present disclosure and together with the description serve to explain various principles. In the drawings:

[0015] Figure 1A is a plan view of an organic light emitting display device according to an exemplary embodiment of the present disclosure;

[0016] Figure 1B yes Figure 1A An enlarged plan view of area A;

[0017] Figure 1C It is along Figure 1B A cross-sectional view taken along line II';

[0018] Figure 1D yes Figure 1A an enlarged plan view of area B;

[0019] Figure 1E It is along Figure 1D A cross-sectional view taken along line II-II';

[0020] Figure 2 is an enlarged view of a partial area of ​​an organic light emitting display device according to another exemplary embodiment of the present disclosure;

[0021] Figure 3 is an enlarged view of a partial region of an organic light emitting display device according to yet another exemplary embodiment of the present disclosure;

[0022] Figure 4A is an enlarged view of a partial region of an organic light emitting display device according to yet another exemplary embodiment of the present disclosure;

[0023] Figure 4B It is along Figure 4A A cross-sectional view taken along line III-III';

[0024] Figure 5A is an enlarged view of a partial region of an organic light emitting display device according to yet another exemplary embodiment of the present disclosure; and

[0025] Figure 5B It is along Figure 5A A cross-sectional view taken along line IV-IV'. DETAILED DESCRIPTION

[0026] By referring to the exemplary embodiments described in detail below and the accompanying drawings, the advantages and features of the present disclosure and the methods for achieving the advantages and features will be clear. However, the present disclosure is not limited to the exemplary embodiments disclosed herein, but will be implemented in various forms. Exemplary embodiments are provided only by way of example so that those skilled in the art can fully understand the disclosure of the present disclosure and the scope of the present disclosure. Therefore, the present disclosure will only be limited by the scope of the appended claims.

[0027] The shapes, sizes, ratios, angles, quantities, etc. illustrated in the accompanying drawings for describing the exemplary embodiments of the present disclosure are merely examples, and the present disclosure is not limited thereto. Throughout the specification, similar reference numerals generally represent similar elements. In addition, in the following description of the present disclosure, the detailed description of known related technologies may be omitted to avoid unnecessarily obscuring the subject matter of the present disclosure. Terms such as "including", "having" and "consisting of..." used herein are generally intended to allow the addition of other components unless the term is used together with the term "only". Unless otherwise expressly stated, any reference to the singular may include the plural.

[0028] Even if not explicitly stated, components are interpreted as including ordinary margins of error.

[0029] When terms such as “on,” “over,” “below,” and “next to” are used to describe the positional relationship between two components, unless the terms are used with the terms “immediately” or “directly,” one or more components may be disposed between the two components.

[0030] When an element or layer is referred to as being “on” another element or layer, the other layer or element can be directly on or between the other element.

[0031] Although the terms "first", "second", etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from other components. Therefore, in the technical concept of the present disclosure, the first component to be mentioned below may be the second component.

[0032] Like reference numerals generally refer to like elements throughout the specification.

[0033] For convenience of description, the size and thickness of each component shown in the drawings are exemplified, and the present disclosure is not limited to the size and thickness of the components shown.

[0034] The features of the various embodiments of the present disclosure may be partially or completely adhered to or combined with each other, and may be technically interlocked and operated in various ways, and the embodiments may be performed independently or in association with each other.

[0035] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0036] Figures 1A to 1E is a diagram for explaining a display device according to an exemplary embodiment of the present disclosure. Figure 1A is a plan view of an organic light emitting display device according to an exemplary embodiment of the present disclosure. Figure 1B yes Figure 1A An enlarged plan view of area A. Figure 1C It is along Figure 1B A cross-sectional view taken along line II'. Figure 1D yes Figure 1A An enlarged plan view of area B. Figure 1E It is along Figure 1D A cross-sectional view taken along line II-II'.

[0037] Reference Figure 1A , Figure 1B and Figure 1C The organic light emitting display device 100 according to an exemplary embodiment of the present disclosure includes an organic light emitting display panel, a touch sensor 150 and an anti-reflection layer AR. The anti-reflection layer AR includes a pattern buffer layer 160, a color filter layer 170 and a black matrix 180.

[0038] The organic light emitting display panel displays an image. The organic light emitting display panel includes a display area DA and a non-display area NDA. The display area DA is an area where a plurality of pixels PX are provided to substantially display an image. In the display area DA, pixels PX including a light emitting area for displaying an image and a driving circuit for driving the pixels PX may be provided. The non-display area NDA surrounds the display area DA. The non-display area NDA is an area where an image is not substantially displayed, and various wirings, driver ICs, and printed circuit boards for driving the pixels PX and the driving circuits provided in the display area DA are provided. For example, in the non-display area NDA, various ICs such as a gate driver IC and a data driver IC may be provided. Meanwhile, as described above, in the non-display area NDA, a driver IC and a printed circuit board may be provided, and a predetermined area is required to provide the driver IC and the printed circuit board.

[0039] A plurality of pixels PX are arranged in a matrix, and each of the plurality of pixels PX includes a plurality of sub-pixels. A sub-pixel is an element that displays one color and includes a light-emitting region in which light is emitted and a non-light-emitting region in which light is not emitted, but in the specification, only the light-emitting region in which light is emitted is defined as a sub-pixel. Figure 1B , one pixel PX includes a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4. For example, the first sub-pixel SP1 and the second sub-pixel SP2 are arranged in the first direction (x-axis direction), and the third sub-pixel SP3 and the fourth sub-pixel SP4 may be arranged along the first direction to be spaced apart from the first sub-pixel SP1 and the second sub-pixel SP2 in the second direction (y-axis direction), but is not limited thereto. The first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4 may display different colors, and if necessary, some sub-pixels may display the same color.

[0040] Each of the first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4 may be any one of a red sub-pixel, a green sub-pixel, and a blue sub-pixel. For example, the sub-pixels may be arranged to have a pentile structure in which the first sub-pixel SP1 and the second sub-pixel SP2 are respectively red sub-pixels and blue sub-pixels, and the third sub-pixel SP3 and the fourth sub-pixel SP4 are both green sub-pixels. When a plurality of sub-pixels SP1, SP2, SP3, and SP4 are arranged in a pentile structure, the number of the first sub-pixel SP1 and the second sub-pixel SP2 arranged in the display area DA may be reduced compared to the sub-pixels arranged to have a stripe structure. As the number of sub-pixels is reduced, the aperture ratio may be increased while maintaining the same level of cognitive resolution compared to the stripe structure. In addition, the number of sub-pixels is reduced, thereby simplifying the manufacturing process of the organic light-emitting display panel, and is advantageous in terms of power consumption. In the pentile structure, the third sub-pixel SP3 and the fourth sub-pixel SP4 of green may have a smaller area than the first sub-pixel SP1 of red and the second sub-pixel SP2 of blue in consideration of brightness and color temperature. Hereinafter, the organic light emitting display device 100 according to the exemplary embodiment of the present disclosure will be described under the assumption that the first sub-pixel SP1 is a red sub-pixel, the second sub-pixel SP2 is a blue sub-pixel, and the third sub-pixel SP3 and the fourth sub-pixel SP4 are green sub-pixels. However, for ease of description, the colors of the sub-pixels are described as an example, and the present disclosure is not limited thereto.

[0041] exist Figure 1B In the embodiment, a plurality of sub-pixels SP1, SP2, SP3 and SP4 are formed into a pentile structure, but the present invention is not limited thereto. The color and arrangement of the sub-pixels may be varied in various forms as required. Figure 1B , it is illustrated that the plurality of sub-pixels SP1, SP2, SP3, and SP4 have an octagonal shape, but it is not limited thereto, and the shape of the sub-pixels may be changed in various shapes. For example, each sub-pixel may have a circular, elliptical, or polygonal shape other than an octagon.

[0042] The organic light emitting display panel includes a substrate 110 , a thin film transistor TFT, an organic light emitting element 130 , and an encapsulation layer 140 , and the organic light emitting element 130 may include an anode 131 , an organic light emitting layer 132 , and a cathode 133 .

[0043] The substrate 110 is a basic member that supports various elements of the organic light-emitting display panel and is formed of an insulating material. For example, the substrate 110 may be a glass substrate or a plastic substrate. For example, the plastic substrate may be selected from polyimide, polyethersulfone, polyethylene terephthalate, and polycarbonate, but is not limited thereto. In order to achieve flexible properties and foldable properties, when a flexible plastic substrate is used, a supporting member such as a backplane may be provided below the substrate 110. The flexible plastic substrate is thinner and has weaker rigidity than a glass substrate, so that the plastic substrate may sag when various elements are provided. The backplane supports the substrate 110 formed of a plastic material so that it does not sag and protects the organic light-emitting display panel from moisture, heat, and impact. For example, the backplane may be a metal material such as stainless steel (SUS) or a plastic material such as polymethyl methacrylate, polycarbonate, polyvinyl alcohol, acrylonitrile-butadiene-styrene, or polyethylene terephthalate.

[0044] When the back plate is disposed under the substrate 110, an adhesive layer may be disposed between the substrate 110 and the back plate to attach them. The adhesive layer may be an optically transparent adhesive or a pressure-sensitive adhesive, but is not limited thereto.

[0045] The substrate buffer layer 121 may be disposed on the substrate 110 to suppress the penetration of oxygen or moisture. The substrate buffer layer 121 may be formed as a single layer, and may also be formed as a multi-layer structure if necessary.

[0046] On the substrate buffer layer 121, a thin film transistor TFT including a gate G, an active layer ACT, a source S, and a drain D is disposed. The thin film transistor TFT is disposed in each region of the first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4. Figure 1C In the embodiment, for the convenience of description, only the driving thin film transistor TFT among various thin film transistors TFT that may be included in the organic light emitting display device 100 is illustrated. Figure 1C In the description, the thin film transistor TFT having a coplanar structure is taken as an example. However, the present disclosure is not limited thereto, and a thin film transistor TFT having an inverse staggered structure may also be used.

[0047] For example, an active layer ACT is disposed on the substrate buffer layer 121, and a gate insulating layer 123 is disposed on the active layer ACT to insulate the active layer ACT and the gate G from each other. In addition, an interlayer insulating layer 122 is disposed on the substrate buffer layer 121 to insulate the gate G from the source S and the drain D. The source S and the drain D contacting the active layer ACT are formed on the interlayer insulating layer 122. A planarization layer 124 may be disposed on the thin film transistor TFT. The planarization layer 124 planarizes the upper portion of the thin film transistor TFT. The planarization layer 124 may include a contact hole electrically connecting the thin film transistor TFT and the anode 131 of the organic light emitting element 130.

[0048] The organic light emitting element 130 is disposed on the planarization layer 124. The organic light emitting element 130 includes a first organic light emitting element 130a disposed in the first sub-pixel SP1, a second organic light emitting element 130b disposed in the second sub-pixel SP2, and a third organic light emitting element 130c disposed in the third sub-pixel SP3. Each of the organic light emitting elements 130a, 130b, 130c includes an anode 131, a cathode 133, and an organic light emitting layer 132.

[0049] The anode 131 is disposed on the planarization layer 124. The anode 131 is formed of a conductive material having a high work function to provide holes to the organic light emitting layer 132. The anode 131 may be a transparent conductive layer formed of a transparent conductive oxide TCO. For example, the anode 131 may be formed of one or more selected from transparent conductive oxides such as indium tin oxide ITO, indium zinc oxide IZO, indium tin zinc oxide ITZO, tin dioxide SnO2, zinc oxide ZnO, indium copper oxide ICO, and aluminum-doped zinc oxide AZO, but is not limited thereto.

[0050] The anode 131 may be separately formed for each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3. The bank 125 is disposed on the anode 131 and the planarization layer 124. The bank 125 divides adjacent sub-pixel regions. In addition, the bank 125 may also divide a pixel region composed of a plurality of sub-pixels. The bank 125 may be formed of an insulating material that insulates the anodes 131 of the adjacent sub-pixels SP1, SP2, and SP3 from each other. In addition, the bank 125 may be formed of a black bank having a high light absorption rate to suppress color mixing between the adjacent sub-pixels SP1, SP2, and SP3.

[0051] The cathode 133 is disposed on the anode 131. The cathode 133 may be formed of a metal material having a low work function to smoothly supply electrons to the organic light emitting layer 132. For example, the cathode 133 may be formed of a metal material selected from calcium (Ca), barium (Ba), aluminum (Al), silver (Ag), and an alloy including one or more thereof, but is not limited thereto.

[0052] The cathode 133 is formed as a layer on the anode 131 without patterning. That is, the cathode 133 is formed as a single layer in the first subpixel SP1, the second subpixel SP2, and the third subpixel SP3. When the organic light emitting display device 100 is driven as a top emission type, the cathode 133 is formed to have a very small thickness to be substantially transparent.

[0053] The organic light emitting layer 132 is disposed between the anode 131 and the cathode 133. The organic light emitting layer 132 is a layer in which electrons and holes are coupled to emit light. The organic light emitting layer 132 of the first organic light emitting element 130a may be a red organic light emitting layer, the organic light emitting layer 132 of the second organic light emitting element 130b may be a blue organic light emitting layer, and the organic light emitting layer 132 of the third organic light emitting element 130c may be a green organic light emitting layer. For example, in the blue organic light emitting layer, electrons and holes are coupled to emit blue light.

[0054] In order to improve the luminous efficiency of the organic light-emitting display panel, a hole injection layer, a hole transport layer, an electron transport layer and an electron injection layer may be further included. For example, the hole injection layer and the hole transport layer may be disposed between the anode 131 and the organic light-emitting layer 132, and the electron transport layer and the electron injection layer may be disposed between the organic light-emitting layer 132 and the cathode 133.

[0055] The encapsulation layer 140 is disposed on the cathode 133 to minimize degradation of the organic light-emitting display panel due to moisture and oxygen. The encapsulation layer 140 flattens the upper surface of the organic light-emitting display panel and fills the space between the cathode 133 and the touch sensor 150. The encapsulation layer 140 may be formed with a multilayer structure in which an inorganic layer formed of an inorganic insulating material and an organic layer formed of an organic material are laminated. For example, the encapsulation layer 140 may be composed of at least one organic layer and at least two inorganic layers, and have a multilayer structure in which the inorganic layer and the organic layer are alternately laminated, but is not limited thereto. For example, the encapsulation layer 140 may have a three-layer structure including a first inorganic layer 141, an organic layer 142, and a second inorganic layer 143. For example, the first inorganic layer 141 and the second inorganic layer 143 may be independently composed of a material selected from silicon nitride SiN x 、Silicon oxide SiO x , silicon oxynitride SiON, and aluminum oxide Al2O3, but is not limited thereto. For example, the organic layer 142 may be formed of one or more selected from epoxy resin, polyimide, polyethylene, and silicon oxycarbide (SiOC), but is not limited thereto.

[0056] The touch sensor 150 is disposed on the encapsulation layer 140 to give a touch sensing function to the organic light-emitting display device 100. The touch sensor 150 may be directly formed on the encapsulation layer 140 without using a bonding member. Since the touch sensor 150 is directly formed on the encapsulation layer 140, a bonding member for attaching the touch sensor 150 and the organic light-emitting display panel is omitted, so that the thickness of the organic light-emitting display device 100 may be reduced.

[0057] The touch sensor 150 includes a touch layer 151 and a touch protection layer 152. The touch layer 151 can be formed directly on the encapsulation layer 140 without using a bonding member. The touch layer 151 includes a touch electrode for sensing a touch input. The touch electrode can be formed directly on the encapsulation layer 140. In this case, the distance between the organic light-emitting display panel and the touch electrode is too close, so that a parasitic capacitance is generated between the organic light-emitting display panel and the touch electrode. Therefore, the touch sensitivity may be reduced. Therefore, it is necessary to appropriately adjust the thickness of the encapsulation layer 140 to minimize the parasitic capacitance. The touch electrode can be composed of a sensing electrode and a driving electrode, and the touch coordinates can be detected by sensing a change in the capacitance between the sensing electrode and the driving electrode. For example, the driving electrode is arranged on the encapsulation layer 140, and the sensing electrode is arranged on the same plane as the driving electrode. As another example, the touch insulating layer is arranged on the driving electrode, and the sensing electrode is arranged on the touch insulating layer. The arrangement of the touch electrode is not limited thereto and can be changed as needed.

[0058] In the process of directly forming the touch layer 151 on the encapsulation layer 140 , a touch buffer layer may be disposed between the encapsulation layer 140 and the touch layer 151 to suppress damage to the encapsulation layer 140 and the organic light emitting element 130 .

[0059] The touch protection layer 152 is disposed on the touch layer 151. The touch protection layer 152 suppresses short circuit or damage of the touch electrode and flattens the upper surface of the touch layer 151. The touch protection layer 152 may be formed of a transparent insulating resin such as an acrylic resin, a polyester resin, or a silicone resin. In addition, although the organic light-emitting display device 100 according to an embodiment of the present disclosure is illustrated as including the touch sensor 150, the present disclosure is not limited thereto, and the touch sensor 150 may be omitted from the organic light-emitting display device if necessary.

[0060] The anti-reflection layer AR is disposed on the touch protection layer 152. The anti-reflection layer AR includes a pattern buffer layer 160, a color filter layer 170, and a black matrix 180. The anti-reflection layer AR absorbs external light to minimize degradation of visibility and contrast of the organic light emitting display device 100 due to the external light.

[0061] The pattern buffer layer 160 is disposed above the touch sensor 150 to protect components thereunder, such as the touch sensor 150 or an organic light-emitting display panel. The pattern buffer layer 160 is formed of an inorganic material. The inorganic material has excellent barrier properties to minimize the penetration of moisture. In addition, the pattern buffer layer 160 can compensate for the deterioration of adhesion between the color filter layer 170 and the black matrix 180 formed of an organic material and the touch protection layer 152. That is, the pattern buffer layer 160 is disposed on the touch protection layer 152 to attach the color filter layer 170 and the black matrix 180 to the touch protection layer 152. For example, the pattern buffer layer 160 can be selected from silicon nitride SiN x 、Silicon oxide SiO x , silicon oxynitride SiON and aluminum oxide Al2O3.

[0062] Since the flexibility of inorganic materials is lower than that of organic materials, when a buffer layer is formed on the entire touch encapsulation layer 140 with an inorganic material, if the organic light-emitting display device 100 is bent or folded, cracks may be easily generated and spread to cause a driving failure. Therefore, the pattern buffer layer 160 is patterned to have a plurality of pattern blocks and at least one first opening area OA1. That is, the plurality of pattern blocks are arranged to be spaced apart from each other, and the first opening area OA1 is formed between the plurality of pattern blocks. The first opening area OA1 relieves the stress generated when the organic light-emitting display device 100 is bent or folded, and suppresses the generation and spread of cracks. The configuration of the pattern buffer layer 160 is not limited thereto, and may be varied to suppress the generation and spread of cracks.

[0063] In the following, reference will be made to Figure 1B and Figure 1C The pattern buffer layer 160 is described in detail. The pattern buffer layer 160 may be composed of a plurality of independent pattern blocks 161, 162, 163, and 164, and have a first opening area OA1 formed between the plurality of pattern blocks 161, 162, 163, and 164. The first opening area OA1 effectively relieves stress of the pattern buffer layer 160 to suppress generation and spread of cracks when the organic light emitting display device 100 is bent or folded.

[0064] Each of the plurality of pattern blocks 161, 162, 163, and 164 is disposed on the touch protection layer 152 in a manner overlapping the plurality of sub-pixels SP1, SP2, SP3, and SP4. For example, the pattern buffer layer 160 includes a first pattern block 161 overlapping the first sub-pixel SP1, a second pattern block 162 overlapping the second sub-pixel SP2, a third pattern block 163 overlapping the third sub-pixel SP3, and a fourth pattern block 164 overlapping the fourth sub-pixel SP4.

[0065] The first pattern block 161, the second pattern block 162, the third pattern block 163, and the fourth pattern block 164 are independently arranged so that the pattern buffer layer 160 has an island shape. For example, the first pattern block 161 and the second pattern block 162 are arranged in a first direction. The third pattern block 163 and the fourth pattern block 164 are arranged along the first direction to be spaced apart from the first pattern block 161 and the second pattern block 162 in a second direction different from the first direction. When the pattern buffer layer 160 has an island shape, stress during folding is relieved, and the generation and spread of cracks can be suppressed.

[0066] like Figure 1B As shown, the plurality of pattern blocks may be formed to have an octagonal shape, but is not limited thereto. The plurality of pattern blocks may be formed to have a circular, elliptical, or polygonal shape other than an octagon. The width of each of the plurality of pattern blocks 161, 162, 163, and 164 may be greater than the width of the light emitting area of ​​the overlapping sub-pixels SP1, SP2, SP3, and SP4, but is not limited thereto. When the width of each of the plurality of pattern blocks 161, 162, 163, and 164 is greater than the width of the light emitting area, a wider viewing angle may be provided.

[0067] The color filter layer 170 is disposed on the encapsulation layer 140. In addition, the color filter layer 170 is disposed in direct contact with the pattern buffer layer 160 and is disposed to cover a partial area of ​​the black matrix 180. The color filter layer 170 absorbs external light to minimize the degradation of visibility and contrast due to external light and improve color reproduction properties. The color filter layer 170 is disposed on the encapsulation layer 140 to improve luminous efficiency and omit a polarizing plate or a polarizing film.

[0068] The color filter layer 170 is arranged to correspond to the sub-pixel arranged thereunder. The color filter layer 170 may include a plurality of color filters. In this case, each color filter may correspond to the color of each corresponding sub-pixel. That is, the color filter layer 170 includes a first color filter 171 corresponding to the first sub-pixel SP1, a second color filter 172 corresponding to the second sub-pixel SP2, a third color filter 173 corresponding to the third sub-pixel SP3, and a fourth color filter 174 corresponding to the fourth sub-pixel SP4. When the first sub-pixel SP1 is a red sub-pixel, the first color filter 171 is a red color filter, and when the second sub-pixel SP2 is a blue sub-pixel, the second color filter 172 is a blue color filter. When the third sub-pixel SP3 and the fourth sub-pixel SP4 are green sub-pixels, the third color filter 173 and the fourth color filter 174 are green color filters.

[0069] The first color filter 171 is disposed in direct contact with the upper portion of the first pattern block 161, and the second color filter 172 is disposed in direct contact with the upper portion of the second pattern block 162. The third color filter 173 is disposed in direct contact with the upper portion of the third pattern block 163, and the fourth color filter 174 is disposed in direct contact with the upper portion of the fourth pattern block 164. The width of each of the pattern blocks 161, 162, 163, 164 may be greater than the width of the corresponding color filter 171, 172, 173, 174. As described above, the pattern buffer layer 160 attaches the color filter layer 170 and the touch protection layer 152 to each other. When the width of the pattern blocks 161, 162, 163, 164 is greater than the width of the color filters 171, 172, 173, 174, the adhesion is more excellent and the generation and spread of cracks are suppressed to improve the folding characteristics. Furthermore, in order to provide a wide viewing angle, the width of each of the color filters 171 , 172 , 173 , and 174 may be greater than the width of the light emitting regions of the overlapped sub-pixels SP1 , SP2 , SP3 , and SP4 .

[0070] Each color filter 171, 172, 173, 174 includes a transparent base resin and a color developing material. For example, the transparent base resin may be one selected from polyacrylate, polymethyl methacrylate, polyimide, polyvinyl alcohol, polyethylene, polypropylene, polystyrene, polyethylene terephthalate, etc., but is not limited thereto.

[0071] The color developing material absorbs light in a specific wavelength band and transmits light in other wavelength bands. For example, a red color filter includes a red developing material that transmits light in a red wavelength band and absorbs light in green and blue wavelength bands. For example, the red developing material may be a compound based on polyparaxylene or a compound based on diketopyrrolopyrrole. For example, the green developing material may be a phthalocyanine-based compound. For example, the blue developing material may be a copper phthalocyanine-based compound or an anthraquinone-based compound. However, the color developing material is not limited thereto, and any material that transmits light in red, blue, and green wavelength bands may be used without limitation.

[0072] Since each color filter 171, 172, 173, 174 is set to correspond to the color of each corresponding sub-pixel SP1, SP2, SP3, SP4, the internal light emitted from each of the first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4 passes through the color filter. For example, the red light emitted from the first sub-pixel SP1 passes through the first color filter 171. In contrast, when external light is incident, the external light corresponding to the absorption wavelength of the color developing material included in each color filter 171, 172, 173, 174 is absorbed by each color filter 171, 172, 173, 174. The external light not absorbed by the color filters 171, 172, 173, and 174 is reflected by the cathode 133 to pass through the color filters 171, 172, 173, and 174 again. Reflected light corresponding to the absorption wavelength of the color developing material included in each color filter 171, 172, 173, 174 is absorbed by each color filter 171, 172, 173, 174. Therefore, degradation of display quality due to external light can be minimized.

[0073] exist Figure 1B and Figure 1C , it is illustrated that color filters 171, 172, 173 and 174 are independently arranged to correspond to a plurality of sub-pixels SP1, SP2, SP3 and SP4, respectively, but it is not limited thereto. The color filter layer 170 may be formed as a single layer. For example, the color filter layer 170 may be arranged as a single layer to cover the upper portion of the pattern buffer layer 160 and the black matrix 180. In this case, the color filter layer 170 may include a base resin, a red developing material, a green developing material and a blue developing material, but it is not limited thereto. If necessary, in addition to the red developing material, the green developing material and the blue developing material, some developing materials may be omitted, and other developing materials may be further included.

[0074] The black matrix 180 is disposed on the touch protection layer 152 and the pattern blocks 161, 162, 163, and 164. The black matrix 180 may be disposed to correspond to the bank 125. Therefore, color mixing between the sub-pixels SP1, SP2, SP3, and SP4 may be minimized. In addition, the black matrix 180 absorbs external light. Therefore, degradation of visibility and contrast of the organic light-emitting display device 100 due to external light may be minimized.

[0075] The black matrix 180 may be formed of an organic material. The black matrix 180 includes a base resin and a black material. The base resin may be selected from one or more of the following: cardo-based resin, epoxy-based resin, acrylate-based resin, siloxane-based resin, and polyimide, but is not limited thereto. The black material may be a black pigment selected from a carbon-based pigment, a metal oxide-based pigment, and an organic-based pigment. For example, the carbon-based pigment may be carbon black. For example, the metal oxide-based pigment may be titanium black TiN.x O y Or Cu-Mn-Fe based black pigment, but not limited thereto. For example, organic based pigment can be selected from lactam black, perylene black and aniline black, but not limited thereto. In addition, as the black material, RGB black pigment including red pigment, blue pigment and green pigment can be used.

[0076] The black matrix 180 is disposed in the first opening area OA1 between the pattern blocks 161, 162, 163, and 164 on the same plane as the pattern buffer layer 160 to divide adjacent pattern blocks. That is, the black matrix 180 formed of an organic material that is relatively flexible compared to an inorganic material is disposed in the first opening area OA1 between the pattern blocks 161, 162, 163, and 164. Therefore, the stress caused when the organic light-emitting display device 100 is bent or folded can be reduced. In addition, cracks generated when the display device is bent or folded can be minimized. Generally, cracks are easily generated and spread in a layer formed of an inorganic material. However, in the pattern buffer layer 160 of the present disclosure, the black matrix 180 formed of an organic material is disposed in the first opening area OA1 between the pattern blocks 161, 162, 163, and 164, so that the spread of the cracks can be suppressed.

[0077] exist Figure 1C , an anti-reflection layer AR including a pattern buffer layer 160, a color filter layer 170, and a black matrix 180 is illustrated as being disposed above the touch protection layer 152, but is not limited thereto. For example, the anti-reflection layer AR may be disposed above the encapsulation layer 140 of the organic light-emitting display panel, or the touch sensor 150 may be disposed above the anti-reflection layer AR. When the touch sensor 150 is disposed above the anti-reflection layer AR, an overcoat may be provided to cover the steps of the anti-reflection layer AR and to flatten the upper surface, and the touch sensor 150 is disposed on the overcoat. In this case, the distance between the touch electrode and the organic light-emitting display panel is increased, thereby reducing the parasitic capacitance formed therebetween, and the distance from the outermost surface to which the touch is input to the touch electrode is reduced, so that the touch sensitivity can be improved.

[0078] In addition, when the anti-reflection layer AR is disposed on the encapsulation layer 140 , the second inorganic layer 143 may function as a pattern buffer layer. That is, the second inorganic layer 143 is patterned to form a pattern buffer layer without separately forming a pattern buffer layer on the second inorganic layer 143 .

[0079] The organic light emitting display device 100 according to the exemplary embodiment of the present disclosure may further include an auxiliary pattern buffer layer 190 formed in the non-display area NDA. Figure 1D and Figure 1E The auxiliary pattern buffer layer 190 is described in detail.

[0080] Reference Figure 1D and Figure 1E , wherein the fourth organic light emitting element 130d disposed in the fourth sub-pixel SP4 is further illustrated, the auxiliary pattern buffer layer 190 may be disposed on the touch protection layer 152 in the same plane as the pattern buffer layer 160. The auxiliary pattern buffer layer 190 is formed along at least one edge of the non-display area NDA. For example, the auxiliary pattern buffer layer 190 may be formed along an edge extending in a first direction along the non-display area NDA or along an edge extending in a second direction. In addition, the auxiliary pattern buffer layer 190 may be formed along an edge extending in a first direction and an edge extending in a second direction. That is, the auxiliary pattern buffer layer 190 has a frame shape. As described above, when an auxiliary pattern buffer layer is included that is formed along at least one edge of the non-display area NDA, the folding characteristics may be further improved, and the generation and diffusion of cracks at the edge of the organic light emitting display device 100 may be suppressed. In addition, it is more advantageously applied to an organic light emitting display device 100 having a large folding stress, such as an organic light emitting display device 100 having a large thickness or a multi-layer folded organic light emitting display device 100.

[0081] The auxiliary pattern buffer layer 190 includes a plurality of auxiliary pattern buffers. For example, the auxiliary pattern buffer layer 190 includes a first auxiliary pattern buffer 191, a second auxiliary pattern buffer 192, and a third auxiliary pattern buffer 193, and includes a second opening area OA2 therebetween. The first auxiliary pattern buffer 191, the second auxiliary pattern buffer 192, and the third auxiliary pattern buffer 193 are disposed to be spaced apart from each other so that the second opening area OA2 is formed between the plurality of auxiliary pattern buffers. The second opening area OA2 can relieve folding stress so that the generation and spread of cracks can be minimized when the organic light-emitting display device 100 is bent or folded.

[0082] Figure 2 FIG. 1 is an enlarged view of a local area of ​​an organic light emitting display device according to another exemplary embodiment of the present disclosure. Figure 2 In an organic light-emitting display device 200 according to another exemplary embodiment of the present disclosure, a pattern buffer layer 260 includes a plurality of pattern blocks 261, 262, 263, and 264 and connection blocks CP1 and CP2. In addition to further providing connection blocks between the plurality of pattern blocks of the pattern buffer layer, Figure 2 The organic light emitting display device 200 and Figures 1A to 1E The organic light emitting display device 100 shown in FIG. 1 is substantially the same as that in FIG. 1 . Therefore, description of duplicate configurations will be omitted.

[0083] Reference Figure 2, the connection blocks disposed between the pattern blocks 261, 262, 263 and 264 include a first connection block CP1 and a second connection block CP2. The first connection block CP1 is disposed between the first pattern block 261 and the second pattern block 262 to connect the first pattern block 161 and the second pattern block 262. The second connection block CP2 is disposed between the third pattern block 263 and the fourth pattern block 264 to connect the third pattern block 263 and the fourth pattern block 264. The width of each of the first pattern block 261 and the second pattern block 262 is greater than the width of the first connection block CP1, and the width of each of the third pattern block 263 and the fourth pattern block 264 is greater than the width of the second connection block CP2.

[0084] The first pattern block 261, the second pattern block 262 and the first connection block CP1 constitute a first block unit BU1, and the third pattern block 263, the fourth pattern block 264 and the second connection block CP2 constitute a second block unit BU2. That is, each of the first block unit BU1 and the second block unit BU2 overlaps with two sub-pixels. For example, the first block unit BU1 overlaps with the first sub-pixel SP1 and the second sub-pixel SP2, and the second block unit BU2 overlaps with the third sub-pixel SP3 and the fourth sub-pixel SP4.

[0085] The first block unit BU1 and the second block unit BU2 are spaced apart from each other without overlapping to be arranged in a zigzag pattern in the second direction (y-axis direction). When the first block unit BU1 and the second block unit BU2 are arranged in a zigzag pattern, the aperture ratio of the pixel can be improved and the folding stress can be more effectively relieved.

[0086] At least one of the first connection block CP1 and the second connection block CP2 may be patterned to have at least one open area. For example, at least one of the first connection block CP1 and the second connection block CP2 may be patterned to have a strip shape. In this case, the folding stress may be further reduced, and the generation and spread of cracks may be more effectively suppressed.

[0087] Figure 3 is an enlarged view of a local area of ​​an organic light emitting display device according to another exemplary embodiment of the present disclosure. Figure 3 , except that the adjacent first block unit BU1 is extended by the first extension block EP1 without being disconnected and the adjacent second block unit BU2 is extended by the second extension block EP2 without being disconnected, the organic light emitting display device 300 according to another exemplary embodiment is similar to Figure 2 The organic light emitting display device 200 shown is substantially the same. Therefore, description of duplicate configurations will be omitted.

[0088] Reference Figure 3In an organic light-emitting display device 300 according to another exemplary embodiment of the present disclosure, a pattern buffer layer 360 includes a first block unit BU1 and a second block unit BU2. The first block unit BU includes a first pattern block 361, a second pattern block 362, and a first connection block CP1, and the second block unit BU2 is composed of a third pattern block 363, a fourth pattern block 364, and a second connection block CP2.

[0089] The first block units BU1 composed of the first pattern blocks 361 , the second pattern blocks 362 and the first connection blocks CP1 disposed therebetween are repeatedly disposed in the first direction (x-axis direction), and the first extension blocks EP1 connect the first block units BU1 repeatedly disposed along the first direction.

[0090] That is, the second pattern block 362 of the first pixel PX1 and the first pattern block 361 of the second pixel PX2 are connected to each other through the first extension block EP1. Therefore, the first block unit BU1 and the first extension block EP1 are alternately and repeatedly arranged, and the first block unit BU1 is extended by the first extension block EP1 without being disconnected to form the first line pattern LP1.

[0091] The second block unit BU2 composed of the third pattern block 363, the fourth pattern block 364 and the second connection block CP2 disposed therebetween is spaced apart from the first block unit BU1 in the second direction. The second extension block EP2 connects the second block units BU2 repeatedly disposed along the first direction.

[0092] That is, the fourth pattern block 364 of the first pixel PX1 and the third pattern block 363 of the second pixel PX2 are connected to each other through the second extension block EP2. Therefore, the second block unit BU2 and the second extension block EP2 are alternately and repeatedly arranged, and the second block unit BU2 is extended by the second extension block EP2 without being disconnected to form the second line pattern LP2.

[0093] The second line pattern LP2 is disposed to be spaced apart from the first line pattern LP1 in the second direction.

[0094] The first line pattern LP1 and the second line pattern LP2 may extend in the first direction without an open area. Therefore, when a crack is generated, the crack may spread along the extension direction of the line pattern. Therefore, in order to minimize the generation and spread of the crack, at least one of the plurality of first connection blocks CP1 and / or at least one of the first extension blocks EP1 may be patterned to have an open area. In addition, at least one of the plurality of second connection blocks CP2 and / or at least one of the plurality of second extension blocks EP2 may be patterned to have an open area. For example, at least one of the plurality of first connection blocks CP1 and at least one of the plurality of second connection blocks CP2 may be patterned to have a strip shape. In addition, at least one of the plurality of first extension blocks EP1 and at least one of the plurality of second extension blocks EP2 may be patterned to have a strip shape. In this case, the crack may be further suppressed, and even if a crack is generated, the spread of the crack along the extension direction of the line pattern may be minimized.

[0095] Figure 4A is an enlarged view of a partial region of an organic light emitting display device according to still another exemplary embodiment of the present disclosure. Figure 4B It is along Figure 4A A cross-sectional view taken along line III-III'. Figure 4A and Figure 4B , except for the shapes and widths of the first and second line patterns LP1′ and LP2′ and the shape of the black matrix 480, the organic light emitting display device 400 according to another exemplary embodiment of the present disclosure is different from Figure 3 The organic light emitting display device 300 shown is substantially the same. Therefore, description of duplicate configurations will be omitted.

[0096] Reference Figure 4A and Figure 4B In an organic light-emitting display device 400 according to another exemplary embodiment of the present disclosure, a pattern buffer layer 460 includes a first block unit BU1' and a second block unit BU2'. The first block unit BU1' is composed of a first pattern block 461, a second pattern block 462, and a first connection block CP1', and the second block unit BU2' is composed of a third pattern block 463, a fourth pattern block 464, and a second connection block CP2'.

[0097] The first block units BU1' consisting of the first pattern blocks 461, the second pattern blocks 462 and the first connection blocks CP1' disposed therebetween are repeatedly disposed in the first direction (x-axis direction), and the first extension blocks EP1' connect the first block units BU1' repeatedly disposed along the first direction.

[0098] That is, the second pattern block 462 of the first pixel PX1 and the first pattern block 461 of the second pixel PX2 are connected to each other through the first extension block EP1'. Therefore, the first block unit BU1' and the first extension block EP1' are alternately and repeatedly arranged, and the first block unit BU1' is extended by the first extension block EP1' without being disconnected to form the first line pattern LP1'.

[0099] The second block unit BU2' consisting of the third pattern block 463, the fourth pattern block 464 and the second connection block CP2' arranged therebetween is spaced apart from the first block unit BU1' in the second direction and is repeatedly arranged along the first direction. The second extension block EP2' connects the second block units BU2' repeatedly arranged along the first direction.

[0100] That is, the fourth pattern block 464 of the first pixel PX1 and the third pattern block 463 of the second pixel PX2 are connected to each other through the second extension block EP2'. Therefore, the second block unit BU2' and the second extension block EP2' are alternately and repeatedly arranged, and the second block unit BU2' is extended by the second extension block EP2' without being disconnected to form the second line pattern LP2'.

[0101] The first pattern block 461, the second pattern block 462 and the first connection block CP1' constituting the first block unit BU1' have the same width. In addition, the first block unit BU1' and the first extension block EP1' constituting the first line pattern LP1' have the same width. Therefore, the first line pattern LP1' has a linear shape with a constant width.

[0102] The third pattern block 463, the fourth pattern block 464 and the second connection block CP2' constituting the second block unit BU2' have the same width. In addition, the second block unit BU2' and the second extension block EP2' constituting the second line pattern LP2' have the same width. Therefore, the second line pattern LP2' has a linear shape with a constant width.

[0103] The second line pattern LP2' is disposed to be spaced apart from the first line pattern LP1' in the second direction. Therefore, the pattern buffer layer 460 has a stripe shape in which the first line pattern LP1' and the second line pattern LP2' having a linear shape with a constant width are repeatedly disposed to be spaced apart from each other in the second direction. Figure 3 Compared to the patterned buffer layer 360 shown, Figure 4A The buffer layer 460 having the stripe-shaped pattern shown has an advantage in that it is easy to control the widths of the first and second line patterns LP1 ′ and LP2 ′ and the interval between the first and second line patterns LP1 ′ and LP2 ′.

[0104] The first line pattern LP1' and the second line pattern LP2' may extend along the first direction without an open area. In this case, when a crack is generated, the crack may spread along the extension direction. Therefore, in order to minimize the generation and spread of cracks, at least one of the plurality of first connection blocks CP1' and / or at least one of the plurality of first extension blocks EP1' may be patterned to have an open area. In addition, at least one of the plurality of second connection blocks CP2' and / or at least one of the plurality of second extension blocks EP2' may be patterned to have an open area. For example, at least one of the plurality of first connection blocks CP1' and at least one of the plurality of first extension blocks EP1' may be patterned to have a strip shape. In addition, at least one of the plurality of second connection blocks CP2' and at least one of the plurality of second extension blocks EP2' may be patterned to have a strip shape. In this case, the first line pattern LP1' and the second line pattern LP2', which are spaced apart from each other to extend along the first direction, are patterned to have an open area, thereby alleviating the folding stress and minimizing the generation and spread of cracks.

[0105] The widths of the first line pattern LP1' and the second line pattern LP2' may be formed to be smaller than the widths of the color filters 171, 172, 173, and 174 respectively disposed, but are not limited thereto. Figure 4B As shown, the widths of the first pattern block 461 , the second pattern block 462 , the third pattern block 463 , and the fourth pattern block 464 may be formed to be smaller than the widths of the light emitting regions of the overlapped sub-pixels SP1 , SP2 , SP3 , and SP4 .

[0106] Figure 5A is an enlarged view of a partial region of an organic light emitting display device according to still another exemplary embodiment of the present disclosure. Figure 5B It is along Figure 5A A cross-sectional view taken along line IV-IV'. Figure 5A and Figure 5B According to another exemplary embodiment of the present disclosure, an organic light-emitting display device 500 includes an organic light-emitting display panel, a touch sensor 150, and an anti-reflection layer AR. In addition, the anti-reflection layer AR includes a pattern buffer layer 560, a color filter layer 170, and a black matrix 580. The pattern buffer layer 560 includes a plurality of pattern blocks 561, 562, 563, and 564, and auxiliary pattern blocks AP1, AP2, AP3, and AP4 disposed between the plurality of pattern blocks 561, 562, 563, and 564. In addition to the pattern buffer layer 560 also including auxiliary pattern blocks between the plurality of pattern blocks, the organic light-emitting display device 500 according to another exemplary embodiment of the present disclosure and Figure 4A and Figure 4B The organic light emitting display devices 400 shown are substantially the same. Therefore, repeated components will not be described again.

[0107] Reference Figure 5A and Figure 5B , the pattern buffer layer 560 includes auxiliary pattern blocks between the plurality of pattern blocks 561, 562, 563, and 564. When the auxiliary pattern blocks are included, the folding stress of the pattern buffer layer 560 can be further reduced, and the generation and spread of cracks can be effectively suppressed.

[0108] The auxiliary pattern blocks may be formed to have a band shape to surround at least one of the first pattern block 561, the second pattern block 562, the third pattern block 563, and the fourth pattern block 564. For example, the auxiliary pattern blocks include a first auxiliary pattern block AP1 surrounding the first pattern block 561, a second auxiliary pattern block AP2 surrounding the second pattern block 562, a third auxiliary pattern block AP3 surrounding the third pattern block 563, and a fourth auxiliary pattern block AP4 surrounding the fourth pattern block 564. Figure 5A and Figure 5B , the auxiliary pattern blocks AP1, AP2, AP3, and AP4 are illustrated as being arranged to surround the first pattern block 561, the second pattern block 562, the third pattern block 563, and the fourth pattern block 564 in a band shape, but are not limited thereto. The auxiliary pattern blocks may be arranged between a plurality of pattern blocks having various shapes to relieve folding stress and inhibit the generation and spread of cracks.

[0109] In the pattern buffer layer 560, since the auxiliary pattern blocks AP1, AP2, AP3, and AP4 are disposed between the plurality of pattern blocks 561, 562, 563, and 564, a third opening area OA3 is formed between the pattern blocks 561, 562, 563, and 564 and the auxiliary pattern blocks AP1, AP2, AP3, and AP4. In addition, a fourth opening area OA4 is disposed between the auxiliary pattern blocks AP1, AP2, AP3, and AP4. In this case, the folding stress of the pattern buffer layer 560 is further alleviated, and the generation and spread of cracks can be minimized.

[0110] The black matrix 580 is disposed between the plurality of pattern blocks 561, 562, 563, and 564 on the same plane as the pattern buffer layer 560. Therefore, the black matrix 580 contacts the upper and side surfaces of the auxiliary pattern blocks AP1, AP2, AP3, and AP4 disposed to surround the pattern blocks 561, 562, 563, and 564. In addition, the black matrix 580 covers the third opening area OA3 and the fourth opening area OA4. In the third opening area OA3 and the fourth opening area OA4, the black matrix 580 formed of a relatively flexible organic material is disposed compared to the pattern buffer layer 560 formed of an inorganic material. Therefore, the folding stress is significantly reduced, and the generation and diffusion of cracks due to folding can be further effectively suppressed.

[0111] Exemplary embodiments of the present disclosure may also be described as follows:

[0112] According to one aspect of the present disclosure, an organic light-emitting display device is provided. The organic light-emitting display device includes: an organic light-emitting display panel including a plurality of sub-pixels, a pattern buffer layer disposed on the organic light-emitting display panel and patterned to overlap at least one of the plurality of sub-pixels, a color filter layer disposed on the pattern buffer layer and including a plurality of color filters corresponding to the plurality of sub-pixels, and a black matrix disposed on the same plane as the pattern buffer layer and dividing each of the plurality of color filters.

[0113] The pattern buffer layer may include a plurality of independent pattern blocks, and each of the plurality of pattern blocks may be disposed to overlap with a plurality of sub-pixels to have an island shape.

[0114] The pattern buffer layer may further include at least one connection block disposed between the plurality of pattern blocks to connect two adjacent pattern blocks.

[0115] The connection block may be patterned to have at least one open area.

[0116] The plurality of sub-pixels may include a first sub-pixel and a second sub-pixel arranged along a first direction, and a third sub-pixel and a fourth sub-pixel spaced apart from the first sub-pixel and the second sub-pixel in the second direction and arranged along the first direction, the plurality of pattern blocks may include a first pattern block overlapping the first sub-pixel, a second pattern block overlapping the second sub-pixel, a third pattern block overlapping the third sub-pixel, and a fourth pattern block overlapping the fourth sub-pixel, and the connecting block may include a first connecting block connecting the first pattern block and the second pattern block, and a second connecting block connecting the third pattern block and the fourth pattern block.

[0117] The first pattern block, the second pattern block, and the first connecting block may constitute a first block unit, and the third pattern block, the fourth pattern block, and the second connecting block may constitute a second block unit, and the first block unit and the second block unit may be arranged in a zigzag pattern in the second direction.

[0118] The pattern buffer layer may also include a first extending block connecting two adjacent first block units, and a second extending block connecting two adjacent second block units, the first block units are linearly extended along the first direction through the first extending block to form a first line pattern, the second block units are linearly extended along the first direction through the second extending block to form a second line pattern, and the second line pattern may be spaced apart from the first line pattern in the second direction.

[0119] A plurality of color filters may be disposed on the pattern buffer layer to respectively correspond to the plurality of pattern blocks, and a width of each of the plurality of pattern blocks may be greater than a width of each of the plurality of color filters.

[0120] The first block unit and the first extending block may have the same width so that the first line pattern extends with a constant width, and the second block unit and the second extending block may have the same width so that the second line pattern extends with a constant width.

[0121] Respective widths of the first and second line patterns may be smaller than widths of the plurality of color filters.

[0122] The pattern buffer layer may further include an auxiliary pattern block disposed between the plurality of pattern blocks.

[0123] The auxiliary pattern block may be disposed to surround at least one pattern block among the plurality of pattern blocks.

[0124] The black matrix may be disposed to be in direct contact with the top and side surfaces of the auxiliary pattern block.

[0125] The organic light emitting display panel may include a display area in which a plurality of sub-pixels are disposed and a non-display area surrounding the display area. The organic light emitting display panel may further include an auxiliary pattern buffer layer disposed on the organic light emitting display panel along at least one edge of the non-display area.

[0126] The auxiliary pattern buffer layer may include a plurality of auxiliary pattern buffers, and may have an open area between the plurality of auxiliary pattern buffers.

[0127] Each of the plurality of auxiliary pattern buffers may be disposed along an edge of the non-display area to have a frame shape.

[0128] According to another aspect of the present disclosure, an organic light-emitting display device having a plurality of sub-pixels is provided. The organic light-emitting display device having a plurality of sub-pixels includes: a substrate, a thin film transistor disposed on the substrate, an organic light-emitting element disposed on the thin film transistor, an encapsulation layer disposed on the organic light-emitting element, and an anti-reflection layer disposed on the encapsulation layer. In addition, the anti-reflection layer may include: a pattern buffer layer patterned to overlap with at least one of the plurality of sub-pixels and including at least one opening area, a color filter layer disposed on the pattern buffer layer, and a black matrix disposed in the opening area.

[0129] The organic light emitting display device may further include a touch layer disposed between the encapsulation layer and the anti-reflection layer.

[0130] The pattern buffer layer may include a plurality of pattern blocks disposed to be spaced apart from each other, and each of the plurality of pattern blocks is disposed to overlap each of the plurality of sub-pixels to have an island shape.

[0131] The pattern buffer layer may further include a connection block disposed between the plurality of pattern blocks to connect two adjacent pattern blocks.

[0132] It will be apparent to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the technical concept or scope of the present disclosure. Therefore, the present disclosure is intended to cover these modifications and variations of the present disclosure as long as they fall within the scope of the appended claims and their equivalents.

[0133] CROSS-REFERENCE TO RELATED APPLICATIONS

[0134] This application claims the priority of Korean Patent Application No. 10-2019-0177430 filed in the Korean Intellectual Property Office on December 30, 2019, the disclosure of which is incorporated herein by reference.

Claims

1. An organic light-emitting display device, comprising: An organic light emitting display panel, the organic light emitting display panel comprising a plurality of sub-pixels and an encapsulation layer disposed on the plurality of sub-pixels; a pattern buffer layer disposed on the encapsulation layer and patterned to overlap at least one sub-pixel of the plurality of sub-pixels; a color filter layer disposed on the pattern buffer layer and including a plurality of color filters corresponding to the plurality of sub-pixels; as well as a black matrix, the black matrix being disposed on the same layer as the pattern buffer layer and the black matrix dividing each of the plurality of color filters, Wherein, the pattern buffer layer is formed of inorganic material.

2. The organic light emitting display device according to claim 1, wherein: The pattern buffer layer includes a plurality of pattern blocks spaced apart from each other, and each of the plurality of pattern blocks is disposed to overlap the plurality of sub-pixels to have an island shape.

3. The organic light emitting display device according to claim 2, wherein: The pattern buffer layer further includes at least one connection block disposed between the plurality of pattern blocks to connect two adjacent pattern blocks.

4. The organic light emitting display device according to claim 3, wherein: The connection block is patterned to have at least one open area.

5. The organic light emitting display device according to claim 3, wherein: The plurality of sub-pixels include a first sub-pixel and a second sub-pixel disposed along a first direction, and a third sub-pixel and a fourth sub-pixel spaced apart from the first sub-pixel and the second sub-pixel in a second direction and disposed along the first direction, The plurality of pattern blocks include a first pattern block overlapping the first sub-pixel, a second pattern block overlapping the second sub-pixel, a third pattern block overlapping the third sub-pixel, and a fourth pattern block overlapping the fourth sub-pixel, and The connection block includes a first connection block connecting the first pattern block and the second pattern block and a second connection block connecting the third pattern block and the fourth pattern block.

6. The organic light emitting display device according to claim 5, wherein: The first pattern block, the second pattern block and the first connecting block constitute a first block unit, and the third pattern block, the fourth pattern block and the second connecting block constitute a second block unit, and The first block units and the second block units are arranged in a zigzag pattern in the second direction.

7. The organic light emitting display device according to claim 6, wherein: The pattern buffer layer further includes a first extending block connecting two adjacent first block units and a second extending block connecting two adjacent second block units. The first block unit is linearly extended along the first direction by the first extending block to form a first line pattern, the second block unit is linearly extended along the first direction by the second extending block to form a second line pattern, and The second line pattern is spaced apart from the first line pattern in the second direction.

8. The organic light emitting display device according to claim 7, wherein: The first block unit and / or the first extension block is patterned to have an open area, and The second block unit and / or the second extension block are patterned to have an opening area.

9. The organic light emitting display device according to claim 2, wherein: The plurality of color filters are disposed on the pattern buffer layer to correspond to the plurality of pattern blocks respectively, and A width of each of the plurality of pattern blocks is greater than a width of each of the plurality of color filters.

10. The organic light emitting display device according to claim 7, wherein: The first block unit and the first extending block have the same width so that the first line pattern extends with a constant width, and The second block unit and the second extending block have the same width so that the second line pattern extends with a constant width.

11. The organic light emitting display device according to claim 10, wherein: Respective widths of the first line pattern and the second line pattern are smaller than widths of the plurality of color filters.

12. The organic light emitting display device according to claim 2, wherein: The pattern buffer layer further includes an auxiliary pattern block disposed between the plurality of pattern blocks.

13. The organic light emitting display device according to claim 12, wherein: An open area is formed between the auxiliary pattern block and the plurality of pattern blocks.

14. The organic light emitting display device according to claim 12, wherein: The auxiliary pattern block is disposed to surround at least one pattern block among the plurality of pattern blocks.

15. The organic light emitting display device according to claim 12, wherein: The black matrix is ​​disposed to directly contact the top and side surfaces of the auxiliary pattern block.

16. The organic light emitting display device according to claim 1, wherein: The organic light emitting display panel includes a display area provided with the plurality of sub-pixels and a non-display area surrounding the display area, and further includes an auxiliary pattern buffer layer provided on the organic light emitting display panel along at least one edge of the non-display area.

17. The organic light emitting display device according to claim 16, wherein: The auxiliary pattern buffer layer includes a plurality of auxiliary pattern buffers and has an open area between the plurality of auxiliary pattern buffers.

18. The organic light emitting display device according to claim 17, wherein: Each of the plurality of auxiliary pattern buffers is disposed along the edge of the non-display area to have a frame shape.

19. An organic light emitting display device comprising a plurality of sub-pixels, the organic light emitting display device comprising: substrate; a thin film transistor, wherein the thin film transistor is disposed on the substrate; an organic light emitting element, wherein the organic light emitting element is disposed on the thin film transistor; An encapsulation layer, the encapsulation layer being disposed on the organic light emitting element; as well as an anti-reflection layer, the anti-reflection layer being disposed on the encapsulation layer, Wherein, the anti-reflection layer comprises: a pattern buffer layer, the pattern buffer layer being patterned to overlap at least one sub-pixel of the plurality of sub-pixels and including at least one opening area; a color filter layer disposed on the pattern buffer layer; and A black matrix is ​​disposed in the opening region, wherein the black matrix and the pattern buffer layer are disposed on the same layer.

20. The organic light emitting display device according to claim 19, further comprising: A touch sensor is disposed between the encapsulation layer and the anti-reflection layer.

21. The organic light emitting display device according to claim 19, further comprising: A touch sensor is disposed on the anti-reflection layer.

22. The organic light emitting display device according to claim 19, wherein: The pattern buffer layer includes a plurality of pattern blocks arranged to be spaced apart from each other, and Each of the plurality of pattern blocks is disposed to overlap each of the plurality of sub-pixels to have an island shape.

23. The organic light emitting display device according to claim 22, wherein: The pattern buffer layer further includes a connection block disposed between the plurality of pattern blocks to connect two adjacent pattern blocks.

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