Organic light emitting display device

Abstract

Disclosed is an organic light emitting display device including: a substrate; a first light emitting region disposed on the substrate and emitting light of a first color, and a second light emitting region disposed on the substrate and emitting light of a second color different from the first color; a first color filter disposed on the first light emitting region; a second color filter disposed on the second light emitting region; and a black matrix disposed in contact with at least one of an upper surface of the first color filter and an upper surface of the second color filter, where the black matrix includes scattering particles.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Korean Patent Application No. 10-2024-0018259, filed on February 6, 2024, which is hereby incorporated by reference as if fully set forth herein. Technical Field

[0003] The present disclosure relates to an organic light emitting display device. Background Art

[0004] As the information society develops, the demand for display devices for displaying images in various forms is increasing. Therefore, various display devices such as liquid crystal displays (LCDs), plasma display panels (PDPs), and organic light emitting displays (OLEDs) have recently been used.

[0005] Among these display devices, organic light-emitting displays (OLEDs) are self-luminous and offer superior viewing angles and contrast compared to liquid crystal displays (LCDs). Furthermore, since a separate backlight is not required, lightweight and thin designs are possible, and power consumption is favorable. Furthermore, OLEDs offer the advantages of being able to operate with low DC voltage, fast response speeds, and, in particular, low manufacturing costs.

[0006] An organic light-emitting display device has a structure in which an organic light-emitting element including a light-emitting layer is disposed between a cathode for injecting electrons and an anode for injecting holes. An organic light-emitting display device utilizes the following principle: when electrons generated from the cathode and holes generated from the anode are injected into the light-emitting layer, the injected electrons and holes combine to generate excitons. The generated excitons then drop from an excited state to a ground state, emitting light.

[0007] Light introduced from outside the display device is reflected by electrodes and wiring disposed within the display device, forming reflected light. When this reflected light is emitted through the display device's light-emitting surface, it may be visually perceived as an uneven pattern, such as rainbow-like or ring-like unevenness. In this case, the uneven pattern formed by external light reflected from the electrodes and wiring disposed within the display device can make it difficult to achieve true black, or can cause eye fatigue in the user. Summary of the Invention

[0008] The present disclosure is completed in view of the above problems, and the purpose of the present disclosure is to provide an organic light-emitting display device, in which a portion of the black matrix that divides the color filter covers a portion of the upper surface of the color filter, and includes (light) scattering particles inside the black matrix so that an uneven pattern is not formed by external light reflected by electrodes and wiring arranged inside the display device.

[0009] According to one aspect of the present disclosure, the above and other purposes can be achieved by providing an organic light-emitting display device, which includes: a substrate; a first light-emitting area and a second light-emitting area, the first light-emitting area being arranged on the substrate and emitting light of a first color, the second light-emitting area being arranged on the substrate and emitting light of a second color different from the first color; a first color filter, the first color filter being arranged on the first light-emitting area; a second color filter, the second color filter being arranged on the second light-emitting area; and a black matrix, the black matrix being arranged to contact at least one of the upper surface of the first color filter and the upper surface of the second color filter, wherein the black matrix includes scattering particles.

[0010] In addition, the above and other purposes can be achieved by providing an organic light-emitting display device, which includes: a substrate, which includes a first light-emitting area and a second light-emitting area; a first color filter, which is arranged on the first light-emitting area; a second color filter, which is arranged on the second light-emitting area; and a black matrix, which is arranged on the first color filter and the second color filter, wherein the black matrix includes a first opening corresponding to the first light-emitting area and a second opening corresponding to the second light-emitting area, and the black matrix includes scattering particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0012] Figure 1 is a perspective view of an organic light emitting display device according to an embodiment of the present disclosure.

[0013] Figure 2 is a schematic plan view of an organic light emitting display device according to an embodiment of the present disclosure.

[0014] Figure 3 is a plan view illustrating an example of a pixel included in an organic light emitting display device according to an embodiment of the present disclosure.

[0015] Figure 4 is a cross-sectional view of a pixel included in an organic light-emitting display device according to an embodiment of the present disclosure, and corresponds to Figure 3 Section I-I'.

[0016] Figure 5 is an enlarged view of a first pixel included in an organic light emitting display device according to an embodiment of the present disclosure, and corresponds to Figure 4 area a.

[0017] Figure 6 is a cross-sectional view of a pixel included in an organic light-emitting display device according to another embodiment of the present disclosure, and corresponds to Figure 3 Section I-I'.

[0018] Figure 7 is an enlarged view of a first pixel included in an organic light emitting display device according to another embodiment of the present disclosure, and Figure 7 Corresponding to Figure 6 area b.

[0019] Figure 8 is a plan view illustrating an example of a pixel included in an organic light emitting display device according to another embodiment of the present disclosure.

[0020] Figure 9 is a cross-sectional view of a pixel included in an organic light-emitting display device according to another embodiment of the present disclosure, and corresponds to Figure 8 Section II-II'.

[0021] Figure 10 is a cross-sectional view of a pixel included in an organic light-emitting display device according to another embodiment of the present disclosure, and corresponds to Figure 8 Section II-II'. DETAILED DESCRIPTION

[0022] The advantages and features of the present disclosure and their implementation methods will be illustrated by the following embodiments described with reference to the accompanying drawings. However, the present disclosure can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is limited only by the scope of the claims.

[0023] The shapes, sizes, ratios, angles, and numbers disclosed in the drawings used to describe embodiments of the present disclosure are merely examples, and the present disclosure is therefore not limited to the details shown. Like reference numerals refer to like elements throughout. In the following description, when it is determined that a detailed description of related known functions or configurations unnecessarily obscures the key points of the present disclosure, the detailed description will be omitted.

[0024] In the case where “including,” “having,” and “comprising” are used in this specification, other parts may also be present unless “only” is used. Terms in the singular form may include plural forms unless otherwise specified.

[0025] When explaining an element, the element is interpreted as including an error area although there is no explicit description thereof.

[0026] When describing a positional relationship, for example, when the positional order is described as "on," "above," "below," "under," and "immediately adjacent to," the case where there is no contact between them may be included unless "exactly" or "directly" is used.

[0027] When a first element is referred to as being "on" a second element, this does not necessarily mean that the first element is substantially above the second element in the drawings. The upper and lower portions of the objects referred to may vary depending on the orientation of the objects. Therefore, a first element being "on" a second element includes both cases where the first element is "below" the second element in the drawings or in actual configuration, as well as cases where the first element is "above" the second element.

[0028] When describing a time relationship, for example, when a time sequence is described as "after," "subsequently," "next," and "before," discontinuous cases may be included unless "just" or "exactly" is used.

[0029] It will be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0030] It should be understood that the term "at least one" includes all combinations related to any one item. For example, "at least one of a first element, a second element, and a third element" may include all combinations of two or more elements selected from the first element, the second element, and the third element, as well as each element of the first element, the second element, and the third element.

[0031] The features of the various embodiments of the present disclosure may be coupled or combined with each other in part or in whole, and may interoperate and technically drive each other in various ways. The embodiments of the present disclosure may be performed independently of each other, or may be performed together in a mutually dependent relationship.

[0032] In the drawings, the same or similar elements are denoted by the same reference numerals although they are depicted in different drawings.

[0033] In the embodiments of the present disclosure, for ease of description, the source electrode and the drain electrode are distinguished from each other. However, the source electrode and the drain electrode are used interchangeably. Therefore, the source electrode may be a drain electrode, and the drain electrode may be a source electrode. In addition, the source electrode in any embodiment of the present disclosure may be a drain electrode in another embodiment of the present disclosure, and the drain electrode in any embodiment of the present disclosure may be a source electrode in another embodiment of the present disclosure.

[0034] In one or more embodiments of the present disclosure, for ease of description, the source region is separated from the source electrode, and the drain region is separated from the drain electrode. However, the embodiments of the present disclosure are not limited to this structure. For example, the source region can be the source electrode, and the drain region can be the drain electrode. In addition, the source region can be the drain electrode, and the drain region can be the source electrode.

[0035] Figure 1 is a perspective view illustrating a display device according to an embodiment of the present disclosure. Figure 2 It shows Figure 1 A plan view of a first substrate, a gate driver, a source driver integrated circuit, a flexible film, a circuit board and a timing controller. Figure 1 and Figure 2 In the various figures, directions are schematically shown using an XYZ coordinate system consisting of an X-axis, a Y-axis, and a Z-axis. Hereinafter, the display device according to the embodiments of the present disclosure is described as an organic light-emitting display, but the present disclosure is not limited thereto. That is, the display device according to the embodiments of the present disclosure can be implemented as one of a liquid crystal display, a field emission display, an electrophoretic display, and an organic light-emitting display.

[0036] Reference Figure 1 and Figure 2 , a display device 100 according to an embodiment of the present disclosure includes a display panel 110 , a gate driver 320 , a source driver integrated circuit (hereinafter referred to as “IC”) 330 , a flexible film 340 , a circuit board 350 , and a timing controller 360 .

[0037] The display panel 110 includes a first substrate 111 and a second substrate 112. The second substrate 112 may be an encapsulation substrate. The first substrate 111 may be a plastic film or a glass substrate. The second substrate 112 may be a plastic film, a glass substrate, or an encapsulation film.

[0038] Gate lines, data lines, and pixels are formed on one surface of the first substrate 111 facing the second substrate 112. The pixels are disposed in regions defined by intersection structures of the gate lines and the data lines.

[0039] Each pixel may include a thin-film transistor and an organic light-emitting element (OLED), which includes a first electrode, an organic light-emitting layer, and a second electrode. When a gate signal is input from a gate line using the thin-film transistor, each pixel supplies a predetermined current to the OLED based on the data voltage of the data line. Consequently, the OLED in each pixel can emit light with a predetermined brightness based on the predetermined current.

[0040] The display panel 110 (including the first substrate 111 and the second substrate 112 therein) can be divided into a display area DA in which pixels are formed to display an image and a non-display area NDA in which no image is displayed. Gate lines, data lines, and pixels can be formed in the display area DA. The gate driver 320 and pads can be formed in the non-display area NDA.

[0041] The gate driver 320 supplies gate signals to the gate lines according to the gate control signals input from the timing controller 360. The gate driver 320 may be formed in a gate-in-panel (GIP) manner in a non-display area NDA provided outside one or both sides of the display area DA of the display panel 110. Alternatively, the gate driver 320 may be manufactured as a driver chip, mounted on a flexible film, and attached to the non-display area NDA outside one or both sides of the display area DA of the display panel 110 using a tape automated bonding (TAB) method.

[0042] The source driver IC 330 receives digital video data and source control signals from the timing controller 360. The source driver IC 330 converts the digital video data into analog data voltages based on the source control signals and supplies the converted analog data voltages to the data lines. When the source driver IC 330 is manufactured as a driver chip, it can be mounted on the flexible film 340 in a chip-on-film (COF) or chip-on-plastic (COP) manner.

[0043] Pads such as data pads may be formed in the non-display area NDA of the display panel 110. Wiring connecting the pads to the source driver IC 330 and wiring connecting the pads to the circuit board 350 may be formed in the flexible film 340. The flexible film 340 is attached to the pads using an anisotropic conductive film, and thus the pads and wiring of the flexible film 340 may be connected to each other.

[0044] The circuit board 350 may be attached to the flexible film 340. A plurality of circuits implemented with a driver chip may be mounted on the circuit board 350. For example, a timing controller 360 may be mounted on the circuit board 350. The circuit board 350 may be a printed circuit board or a flexible printed circuit board.

[0045] The timing controller 360 receives digital video data and timing signals from an external system board via a cable of the circuit board 350. Based on the timing signals, the timing controller 360 generates a gate control signal for controlling the operation timing of the gate driver 320 and a source control signal for controlling the source driver IC 330. The timing controller 360 supplies the gate control signal to the gate driver 320 and the source control signal to the source driver IC 330.

[0046] Figure 3 is a plan view illustrating an example of a pixel included in an organic light emitting display device according to an embodiment of the present disclosure.

[0047] like Figure 3 As shown, the organic light emitting display device according to an embodiment of the present disclosure includes a plurality of pixels P, a color filter 260 , and a black matrix BM having an opening OP.

[0048] Any one of the plurality of pixels P includes a plurality of light emitting regions E1 , E2 , E3 , and E4 .

[0049] The plurality of light-emitting regions E1, E2, E3, and E4 may include a first light-emitting region E1, a second light-emitting region E2, a third light-emitting region E3, and a fourth light-emitting region E4, and each of the plurality of light-emitting regions E1, E2, E3, and E4 may emit any one of red (R), green (G), and blue (B) light. The first light-emitting region E1 may, for example, emit red (R) light, the second light-emitting region E2 and the fourth light-emitting region E4 may, for example, emit green (G) light, and the third light-emitting region E3 may, for example, emit blue (B) light. Meanwhile, the color of light emitted by each of the light-emitting regions E1, E2, E3, and E4 is not limited thereto, and in some cases, white (W) light may be emitted, and light of various colors may be emitted according to the level of those skilled in the art.

[0050] The plurality of light-emitting regions E1, E2, E3, and E4 may be formed to have different sizes. For example, the third light-emitting region E3 may be larger than the first, second, and fourth light-emitting regions E1, E2, and E4, the first light-emitting region E1 may be larger than the second and fourth light-emitting regions E2 and E4, and the second and fourth light-emitting regions E2 and E4 may be formed to have the same size. However, the present disclosure is not limited thereto, and the first to fourth light-emitting regions E1 to E4 may be formed in various sizes and in various arrangements depending on the level of technology.

[0051] Color filters 260 a , 260 b , 260 c , and 260 d and a black matrix BM may be formed on the plurality of pixels P, and a plurality of openings OP1 , OP2 , OP3 , and OP4 may be formed in the black matrix BM.

[0052] The color filters 260a, 260b, 260c, and 260d include a first color filter 260a, a second color filter 260b, a third color filter 260c, and a fourth color filter 260d. The color filters 260a, 260b, 260c, and 260d can transmit light of the same wavelength band as the color of the light emitted from the light-emitting regions E1, E2, E3, and E4, respectively. For example, the first color filter 260a is arranged to correspond to the first light-emitting region E1 and can transmit red (R) light, the second color filter 260b and the fourth color filter 260d are arranged to correspond to the second light-emitting region E2 and the fourth light-emitting region E4, respectively, and can transmit green (G) light, and the third color filter 260c is arranged to correspond to the third light-emitting region E3 and can transmit blue (B) light.

[0053] The color filters 260 a , 260 b , 260 c , and 260 d may be formed in the same shape as the light emitting regions E1 , E2 , E3 , and E4 , and the color filters 260 a , 260 b , 260 c , and 260 d are formed to be spaced apart from each other.

[0054] The plurality of light-emitting regions E1, E2, E3, and E4, the color filters 260a, 260b, 260c, and 260d, and the plurality of openings OP1, OP2, OP3, and OP4 of the black matrix BM may correspond to each other. For example, the first light-emitting region E1 may correspond to the first color filter 260a and the first opening OP1 of the black matrix BM, the second light-emitting region E2 may correspond to the second color filter 260b and the second opening OP2 of the black matrix BM, the third light-emitting region E3 may correspond to the third color filter 260c and the third opening OP3 of the black matrix BM, and the fourth light-emitting region E4 may correspond to the fourth color filter 260d and the fourth opening OP4 of the black matrix BM.

[0055] According to an embodiment of the present disclosure, each of the light emitting regions E1, E2, E3, and E4 may be configured as any one of an n-gon (n is an integer greater than or equal to 6), a circle, and an ellipse. Figure 3 As shown, each of the light-emitting regions E1, E2, E3, and E4 can be configured as an octagon. In addition, the color filters 260a, 260b, 260c, and 260d corresponding to each of the light-emitting regions E1, E2, E3, and E4 and the openings OP1, OP2, OP3, and OP4 of the black matrix BM can be configured as any one of n-gons (n is an integer greater than or equal to 6), circles, and ellipses. For example, the first light-emitting region E1 can be configured as an octagon, and the first color filter 260a corresponding to the first light-emitting region E1 and the first opening OP1 of the black matrix BM can be configured as an octagon.

[0056] When the first light-emitting region E1, the first color filter 260a, and the first opening OP1 of the black matrix BM are formed in an octagon, for example, the first light-emitting region E1, the first color filter 260a, and the first opening OP1 of the black matrix BM may be formed in an octagon including a first side and a second side, respectively. In this case, the first side of the first light-emitting region E1 may be formed to face the first side of the first color filter 260a and the first side of the first opening OP1 of the black matrix BM, and the second side of the first light-emitting region E1 may be formed to face the second side of the first color filter 260a and the second side of the first opening OP1 of the black matrix BM.

[0057] The first side and the second side of the first light-emitting region E1 may be spaced apart from the first side and the second side of the first opening OP1 of the black matrix BM by the same length, respectively. More specifically, the shortest distance between the first side of the first light-emitting region E1 and the first side of the first opening OP1 of the black matrix BM may be set to be the same as the shortest distance between the second side of the first light-emitting region E1 and the second side of the first opening OP1 of the black matrix BM.

[0058] According to an embodiment of the present disclosure, the first light-emitting region E1, the first color filter 260a, and the first opening OP1 of the black matrix BM are formed in any one of an n-gon (n is an integer of 6 or greater), a circle, and an ellipse, and the first light-emitting region E1 and the first opening OP1 of the black matrix BM are formed so that each side is separated by a predetermined distance. Therefore, even if external light is irradiated to the organic light-emitting display device according to an embodiment of the present disclosure and is reflected by the internal electrodes and wires, uneven patterns such as rainbow unevenness or ring unevenness are prevented from being formed, thereby improving user visibility.

[0059] At the same time, for the convenience of description, Figure 3 The first light-emitting region E1, the first color filter 260a and the first opening OP1 have been mainly described in the specification, and the second light-emitting region E2 to the fourth light-emitting region E4, the second color filter 260b to the fourth color filter 260d and the second opening OP2 to the fourth opening OP4 of the black matrix may have the same contents as the first color filter 260a corresponding to the first light-emitting region E1 and the first opening OP1 of the black matrix BM described above.

[0060] Figure 4 is a cross-sectional view of a pixel included in an organic light-emitting display device according to an embodiment of the present disclosure, and corresponds to Figure 3 Section I-I'.

[0061] like Figure 4As shown, the organic light-emitting display device according to an embodiment of the present disclosure includes a first substrate 111, a buffer layer 120, an active layer 130, a gate insulating layer 140, a gate electrode 150, an interlayer insulating layer 160, a source electrode 171, a drain electrode 172, a planarization layer 180, first electrodes 190a, 190b and 190c, a dam 200, organic light-emitting layers 210a, 210b and 210c, second electrodes 220a, 220b and 220c, an encapsulation layer 230, a touch electrode 240, a touch insulating layer 250, color filters 260a, 260b and 260c, a black matrix 270, an outer coating layer 280 and a second substrate 112.

[0062] The first substrate 111 may be made of glass or plastic. In particular, the first substrate 111 may be made of a transparent plastic having flexible properties, such as polyimide. When polyimide is used as the first substrate 111, a heat-resistant polyimide that can withstand high temperatures may be used, considering that a high-temperature deposition process is performed on the first substrate 111.

[0063] A buffer layer 120 may be formed on the first substrate 111. The buffer layer 120 may protect the active layer 130 by blocking air and moisture. The buffer layer 120 may be made of an inorganic insulating material such as silicon oxide, silicon nitride, or metal oxide, but is not limited thereto and may be made of an organic insulating material.

[0064] A thin film transistor TR may be formed on the buffer layer 120. The thin film transistor TR may include an active layer 130, a gate electrode 150, a source electrode 171, and a drain electrode 172. In this case, the thin film transistor TR may be a driving thin film transistor, but is not limited thereto.

[0065] The thin film transistor TR may be provided to correspond to each of the light emitting regions E1, E2, and E3 provided in each pixel, and at the same time, Figure 4 It is described that only one thin film transistor TR is formed in each of the light emitting regions E1 , E2 , and E3 , but the present disclosure is not limited thereto, and various numbers of thin film transistors may be provided to correspond to the light emitting regions according to the technical level of those skilled in the art.

[0066] The active layer 130 may be formed on the buffer layer 120. The active layer 130 may include a semiconductor material such as any one of amorphous silicon, polysilicon, and an oxide semiconductor material.

[0067] Although not specifically shown, the active layer 130 includes a channel portion, a first connection portion provided on one side (e.g., the left side) of the channel portion, and a second connection portion provided on the other side (e.g., the right side) of the channel portion. The channel portion overlaps with the gate electrode 150. By forming in this manner, during the conductive treatment for making a portion of the active layer 130 a conductor, the channel portion is protected by the gate electrode 150, so that the semiconductor properties can be maintained without becoming a conductor. The first connection portion and the second connection portion can have conductive properties by performing a conductive treatment such as plasma treatment on the semiconductor material using the gate electrode 150 as a mask. The first connection portion and the second connection portion that have undergone the conductive treatment have excellent conductive properties and can be used as electrodes or wiring.

[0068] A gate insulating layer 140 may be formed on the active layer 130. The gate insulating layer 140 may be formed on the entire surface of the first substrate 111, but the present disclosure is not limited thereto, and a partial region of the gate insulating layer 140 may be patterned such that one end and the other end of the gate insulating layer 140 correspond to one end and the other end of the gate electrode 150, respectively.

[0069] The gate insulating layer 140 may include a silicon nitride film (SiNx) or a silicon oxide film (SiOx), but is not limited thereto. The gate insulating layer 140 may be formed of a single layer or multiple layers including an inorganic insulating material and / or an organic insulating material.

[0070] A gate electrode 150 may be formed on the gate insulating layer 140 .

[0071] The gate electrode 150 may include at least one of the following: an aluminum-based metal (e.g., aluminum (Al) or an aluminum alloy), a silver-based metal (e.g., silver (Ag) or a silver alloy), a copper-based metal (e.g., copper (Cu) or a copper alloy), a molybdenum-based metal (e.g., molybdenum (Mo) or a molybdenum alloy), chromium (Cr), tantalum (Ta), neodymium (Nd), and titanium (Ti). The gate electrode 150 may have a structure including one metal layer or a multilayer structure including at least two metal layers each having different physical properties.

[0072] An interlayer insulating layer 160 may be formed on the gate electrode 150. The interlayer insulating layer 160 insulates the gate electrode 150 from the source electrode 171 and also insulates the gate electrode 150 from the drain electrode 172. The interlayer insulating layer 160 may be formed of a single layer or multiple layers including an inorganic insulating material and / or an organic insulating material.

[0073] Contact holes may be formed in the interlayer insulating layer 160. Therefore, a portion of the upper surface of the first connection portion of the active layer 130 may be exposed through one contact hole, and further, a portion of the upper surface of the second connection portion of the active layer 130 may be exposed through another contact hole.

[0074] A source electrode 171 and a drain electrode 172 may be disposed on the interlayer insulating layer 160 .

[0075] The source electrode 171 may be electrically connected to the first connection portion of the active layer 130 through the contact hole, and the drain electrode 172 may be electrically connected to the second connection portion of the active layer 130 through the contact hole.

[0076] The source electrode 171 and the drain electrode 172 may be formed of the same material as the gate electrode 150 , but are not limited thereto and may be formed of a material according to knowledge in the art.

[0077] A planarization layer 180 may be formed on the interlayer insulating layer 160, the source electrode 171, and the drain electrode 172. The planarization layer 180 may be formed on the source electrode 171 and the drain electrode 172 to planarize an upper surface thereof.

[0078] A contact hole is provided in the planarization layer 180 , and a portion of the upper surface of the drain electrode 172 may be exposed through the contact hole. However, in some cases, a portion of the upper surface of the source electrode 171 may be exposed through the contact hole.

[0079] The planarization layer 180 may be formed of an organic insulating material, such as, for example, acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin.

[0080] First, second, and third organic light emitting elements EL1, EL2, and EL3 may be formed on the planarization layer 180. The first to third organic light emitting elements EL1 to EL3 may define first, second, and third light emitting regions E1, E2, and E3, respectively.

[0081] The first organic light emitting element EL1, the second organic light emitting element EL2 and the third organic light emitting element EL3 may respectively include first electrodes 190a, 190b and 190c, light emitting layers 210a, 210b and 210c and second electrodes 220a, 220b and 220c, and the light emitting layers 210a, 210b and 210c respectively arranged in each of the organic light emitting elements EL1, EL2 and EL3 may be separated by the embankment 200.

[0082] First electrodes 190a, 190b, and 190c may be formed on the planarization layer 180 and may be electrically connected to the drain electrode 172 (or the source electrode 171) through contact holes provided in the planarization layer 180. The first electrodes 190a, 190b, and 190c may function as anodes.

[0083] A bank 200 may be formed on the first electrodes 190a, 190b, and 190c. In this case, the exposed portions of the upper surfaces of the first electrodes 190a, 190b, and 190c that are not covered by the bank 200 become light-emitting regions. Therefore, in the first light-emitting element EL1, the exposed portions of the upper surface of the first electrode 190a that are not covered by the bank 200 become the first light-emitting region E1, and in the second light-emitting element EL2, the exposed portions of the upper surface of the first electrode 190b that are not covered by the bank 200 become the second light-emitting region E2. In the third light-emitting element EL3, the exposed portions of the upper surface of the first electrode 190c that are not covered by the bank 200 may become the third light-emitting region E3.

[0084] The bank 200 may be formed of an organic layer such as acrylic resin, epoxy resin, phenol resin, polyamide resin, polyimide resin, or the like.

[0085] Organic light-emitting layers 210a, 210b, and 210c may be formed on the first electrodes 190a, 190b, and 190c. The organic light-emitting layers 210a, 210b, and 210c may include any one of a red light-emitting layer, a green light-emitting layer, and a blue light-emitting layer patterned for each pixel, or may include a white light-emitting layer connected to all pixels. For example, when the organic light-emitting layers 210a, 210b, and 210c include a white light-emitting layer, the organic light-emitting layers 210a, 210b, and 210c may include a first stack including a blue light-emitting layer, a second stack including a yellow-green light-emitting layer, and a charge generation layer disposed between the first and second stacks, but are not limited thereto.

[0086] A second electrode 220 may be formed on the organic light emitting layers 210a, 210b, and 210c. The second electrode 220 may function as a cathode.

[0087] For example, the second electrode 220 may be formed on the entire surface of the bank 200 and the organic light emitting layers 210 a , 210 b , and 210 c .

[0088] The encapsulation layer 230 may include, for example, a first encapsulation layer 230a, a second encapsulation layer 230b, and a third encapsulation layer 230c. The first to third encapsulation layers 230a to 230c may be sequentially stacked on the second electrode 220. The first and third encapsulation layers 230a and 230c may be formed of inorganic film layers containing inorganic materials, and the second encapsulation layer 230b may be formed of an organic film layer containing organic materials.

[0089] The first encapsulation layer 230a is formed at the lowermost end of the encapsulation layer 230 to contact the upper surface of the second electrode 220. The first encapsulation layer 230a may be formed of a material such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), aluminum oxide (Al2O3), etc.

[0090] The second encapsulation layer 230b may be formed on the first encapsulation layer 230a. The second encapsulation layer 230b may be formed of a material such as acrylic resin, epoxy resin, polyimide, polyethylene (PE), or silicon oxycarbon (SiOC).

[0091] The third encapsulation layer 230c may be formed on the second encapsulation layer 230b. The third encapsulation layer 230c may be formed of the same material as the first encapsulation layer 230a.

[0092] Touch electrodes 240 may be formed on encapsulation layer 230. More specifically, touch electrodes 240 may be formed on third encapsulation layer 230c. Meanwhile, although not shown in detail, a separate insulating layer may be additionally provided between encapsulation layer 230 and touch electrodes 240. Touch electrodes 240 may sense touch input information using a self-capacitance method or a mutual capacitance method, but the present disclosure is not limited thereto.

[0093] The touch insulating layer 250 is formed on the touch electrode 240. The touch insulating layer 250 is formed on the touch electrode 240 to prevent moisture or oxygen from flowing into the touch electrode 240 from the outside.

[0094] Meanwhile, in some cases, the touch electrode 240 and the touch insulation layer 250 may be omitted.

[0095] Color filters 260a, 260b, and 260c and a black matrix 270 may be formed on the touch insulating layer 250. Meanwhile, when the touch electrodes 240 and the touch insulating layer 250 are omitted, color filters 260a, 260b, and 260c and a black matrix 270 may be formed on the encapsulation layer 230.

[0096] The color filters 260a, 260b, and 260c may include a first color filter 260a, a second color filter 260b, and a third color filter 260c. The color filters 260a, 260b, and 260c may correspond to the light-emitting areas E1, E2, and E3, respectively. For example, when overlapping with the first light-emitting element EL1, the first color filter 260a may transmit light emitted from the first light-emitting area E1 of the first light-emitting element EL1, such as red (R) light. When overlapping with the second light-emitting element EL2, the second color filter 260b may transmit light emitted from the second light-emitting area E2 of the second light-emitting element EL2, such as green (G) light. In addition, when overlapping with the third light-emitting element EL3, the third color filter 260c may transmit light emitted from the third light-emitting area E3 of the third light-emitting element EL3, such as blue (B) light.

[0097] A black matrix 270 may be formed between the color filters 260a, 260b, and 260c. The black matrix 270 is disposed to cover a portion of the upper surfaces of the color filters 260a, 260b, and 260c and to cover the side surfaces of the color filters 260a, 260b, and 260c.

[0098] Black matrix 270 may include a first portion 271 contacting side surfaces of color filters 260a, 260b, and 260c and a second portion 272 disposed on first portion 271 and contacting a portion of upper surfaces of color filters 260a, 260b, and 260c.

[0099] The second portion 272 is provided to protrude compared to the first portion 271, and the thickness of the second portion 272 is formed to be thinner than the thickness of the first portion 271. By forming in this manner, part of the light can pass through the second portion 272, while the other part of the light cannot pass through the first portion 271.

[0100] In addition, although not specifically shown, the first portion 271 and the second portion 272 of the black matrix 270 include a plurality of scattering particles for scattering light (see FIG. Figure 5 273 in). By forming in this manner, the black matrix 270 can prevent the light emitted from the first light emitting region E1 and the second light emitting region E2 from mixing when passing through the first color filter 260a and the second color filter 260b. In addition, it can prevent the formation of uneven patterns when external light is introduced into the organic light emitting display device according to the embodiment of the present disclosure and reflected by the electrodes and wiring. At the same time, reference will be made to Figure 5 Describing this in more detail, the Figure 5 It is an enlarged view of area a to be described below.

[0101] An overcoat layer 280 may be formed on the color filters 260 a , 260 b , and 260 c and the black matrix 270 .

[0102] Meanwhile, an optically transparent adhesive member (OCA) may be formed on the color filters 260 a , 260 b , and 260 c and the black matrix 270 and under the overcoat layer 280 .

[0103] The second substrate 112 may be formed on the overcoat layer 280. The second substrate 112 may face the first substrate 111 and be combined.

[0104] The second substrate 112 may be made of glass or plastic. In particular, the second substrate 112 may be made of a transparent plastic having flexible properties, such as polyimide.

[0105] Figure 5 is an enlarged view of a first pixel included in an organic light emitting display device according to an embodiment of the present disclosure, and corresponds to Figure 4 In this case, in the area a Figure 5 In, with Figure 4 The same elements as those shown are given the same reference numerals, and repeated descriptions will be omitted below.

[0106] like Figure 5 As shown, the black matrix 270 includes a first portion 271 disposed in contact with a side surface of the first color filter 260a, a second portion 272 disposed on the first portion 271 and covering a portion of the upper surface of the first color filter 260a, and scattering particles 273 disposed in the first portion 271 and the second portion 272.

[0107] The first portion 271 may be thicker than the second portion 272 to prevent light emitted from the first light emitting element EL1 from passing through the side surface of the first color filter 260a. By forming in this manner, it is possible to prevent light from being emitted from adjacent light emitting elements such as Figure 4 The lights of different colors emitted by the first light emitting element EL1 and the second light emitting element EL2 are mixed with each other. Figure 5 The scattering particles 273 provided in the first portion 271 are illustrated, but the present disclosure is not limited thereto, and the scattering particles 273 may not be formed in the first portion 271 .

[0108] The first portion 271 may be in contact with a side surface of the first color filter 260a. Although not shown in detail, the first portion 271 may be disposed in contact with at least one side surface of each of the color filters 260a, 260b, 260c, and 260d.

[0109] The second portion 272 may be provided on the first portion 271 to be in contact with the first portion 271 .

[0110] The second portion 272 may be formed to have a thinner thickness than the first portion 271. The second portion 272 may have a first thickness h1 in the third direction Z, and the first thickness h1 may be in the range of 0.7 μm to 2 μm, and preferably, the first thickness h1 may be in the range of 0.7 μm to 1 μm. In this case, when the first thickness h1 of the second portion 272 is less than 0.7 μm, the shielding function may be reduced due to the reduction in the thickness of the black matrix 270, and accordingly, color mixing may occur due to the light emitted from the adjacent light-emitting regions. When the first thickness h1 of the second portion 272 exceeds 2 μm, reflected external light may not be introduced into the second portion 272 and may not be scattered by the scattering particles 273.

[0111] One end of the second portion 272 may protrude from one end of the first portion 271 by a first length d1. In this case, the first length d1 by which the second portion 272 protrudes (also referred to as the first length d1 of the second portion 272) may be in the range of 1 μm to 4 μm, preferably in the range of 1 μm to 2 μm. When the first length d1 of the second portion 272 is less than 1 μm, process control may be difficult, and when the first length d1 exceeds 4 μm, the viewing angle characteristics of the light emitted from the first light-emitting region E1 may deteriorate. One end of the second portion 272 is formed to protrude from one end of the first portion 271 by the first length d1, so that the second portion 272 can contact the upper surface of the first color filter 260a. Although not specifically shown, the second portion 272 of the black matrix 270 can be arranged to contact the upper surface of at least one of the color filters 260a, 260b, 260c, and 260d, respectively.

[0112] Since the scattering particles 273 are formed in the second portion 272 and the first thickness h1 of the second portion 272 is formed to have a thickness sufficient to transmit light, the path of the light passing through the second portion 272 among the external light introduced into the organic light-emitting display device according to the embodiment of the present disclosure and reflected can be partially changed. The scattering particles 273 may include at least one of TiO2, BaTiO3, ZrO2, SiO4, ZnO, SiO2, SiO, TiO2, ZrO2, and AlO4, and the average diameter of the scattering particles 273 may be less than 1 μm, but the material and size of the scattering particles 273 are not limited thereto.

[0113] For example, when first light L1 and second light L2 enter the organic light emitting display device according to an embodiment of the present disclosure in parallel from the outside, the first light L1 passes through the first color filter 260a and is reflected back to the outside, while the second light L2 is reflected by the first electrode 190a and passes through the second portion 272 covering a portion of the upper surface of the first color filter 260a. In this case, when the second light L2 is scattered by the scattering particles 273 provided in the second portion 272, the second light L2 has a different movement path from the first light L1.

[0114] According to an embodiment of the present disclosure, by changing the path of some light among the light introduced from the outside by the second portion 272 of the black matrix 270, uneven patterns such as rainbow unevenness caused by enhanced interference of the first light L1 and the second light L2 can be prevented from being formed.

[0115] Furthermore, light that passes through second portion 272 of the external light entering the organic light-emitting display device according to an embodiment of the present disclosure is scattered by scattering particles 273 provided in second portion 272, and the movement path of the light that passes through second portion 272 is different from the movement path of the light that does not pass through second portion 272. In this case, similarly, the movement paths of the light that passes through second portion 272 and the light that does not pass through second portion 272 are different, so that the formation of uneven patterns caused by enhanced interference can be prevented. Therefore, since the uneven patterns formed by reflecting external light are eliminated, the user's visibility can be improved.

[0116] Figure 6 is a cross-sectional view of a pixel included in an organic light-emitting display device according to another embodiment of the present disclosure. In this case, Figure 6 Corresponding to Figure 3 Section I-I'. In this case, due to Figure 6 The embodiment of the present invention is similar to the embodiment of the present invention except for the configuration of the dike. Figure 4 The implementation methods are the same, so the following will mainly describe different configurations.

[0117] like Figure 6 As shown, an organic light-emitting display device according to another embodiment of the present disclosure includes a first substrate 111, a buffer layer 120, an active layer 130, a gate insulating layer 140, a gate electrode 150, an interlayer insulating layer 160, a source electrode 171, a drain electrode 172, a planarization layer 180, first electrodes 190a, 190b and 190c, a dam 200, organic light-emitting layers 210a, 210b and 210c, a second electrode 220, an encapsulation layer 230, a touch electrode 240, a touch insulating layer 250, color filters 260a, 260b and 260c, a black matrix 270, an outer coating layer 280 and a second substrate 112.

[0118] The bank 200 includes a first portion 201 configured to divide the first, second, and third light emitting elements EL1, EL2, and EL3 and a second portion 202 provided on and protruding from the first portion 201. In this case, the thickness of the second portion 202 is formed to be smaller than that of the first portion 201.

[0119] According to another embodiment of the present disclosure, the bank 200 may include the same material as the black matrix 270. By being formed in this manner, a portion of light may pass through the second portion 202, and a portion of light may not pass through the first portion 201.

[0120] In addition, although not specifically shown, the first portion 201 and the second portion 202 of the bank 200 include scattering particles that scatter light (see FIG. Figure 7 203 in). By forming in this way, external light can be introduced into the organic light emitting display device according to another embodiment of the present disclosure, and it is possible to prevent uneven patterns from being formed when reflected by electrodes and wirings. Figure 7 Described in more detail, the Figure 7 It is an enlarged view of a region b to be described later.

[0121] Figure 7 is an enlarged view of a first pixel included in an organic light emitting display device according to another embodiment of the present disclosure, and corresponds to Figure 6 In this case, in the area b. Figure 7 In, with Figure 6 The same elements as those shown are given the same reference numerals, and repeated descriptions will be omitted below.

[0122] like Figure 7 As shown, the bank 200 includes a first portion 201 in contact with the organic light emitting layer 210a, a second portion 202 disposed on the first portion 201 and covering a portion of the upper surface of the organic light emitting layer 210a, and scattering particles 203 disposed in the first portion 201 and the second portion 202.

[0123] The first portion 201 is formed to cover a portion of the first electrode 190a, thereby defining a first light emitting region E1. Specifically, a portion of the upper surface of the first electrode 190a that is not covered by the first portion 201 and is exposed can be defined as the first light emitting region E1. Figure 7 Only a state in which the scattering particles 203 are formed in the first portion 201 is shown, but the present disclosure is not limited thereto, and the scattering particles 203 may not be formed in the first portion 201 .

[0124] The second portion 202 may be formed to have a thickness thinner than the first portion 201. The second portion 202 may have a second thickness h2 in the third direction Z, and the second thickness h2 may be in the range of 0.5 μm to 2 μm, preferably in the range of 0.5 μm to 0.7 μm. When the second thickness h2 is less than 0.5 μm, process control may be difficult to form the second portion 202, and when the second thickness h2 exceeds 2 μm, the viewing angle characteristics of the light emitted from the first light emitting region E1 may deteriorate.

[0125] One end of the second portion 202 may protrude from one end of the first portion 201 by a second length d2. In this case, the second length d2 by which the second portion 202 protrudes (also referred to as the second length d2 of the second portion 202) may be in the range of 1 μm to 4 μm, preferably in the range of 1 μm to 2 μm. When the second length d2 of the second portion 202 is less than 1 μm, process control becomes difficult, and thus an uneven pattern may be visually recognized. Moreover, when the second length d2 exceeds 4 μm, the brightness characteristics and viewing angle characteristics of the light emitted from the first light-emitting region E1 may deteriorate.

[0126] Since the scattering particles 203 are formed in the second portion 202 and the first thickness h1 of the second portion 202 is formed to have a thickness sufficient to transmit light, the path of the light passing through the second portion 202 among the external light introduced into the organic light-emitting display device according to the embodiment of the present disclosure and reflected can be partially changed. The scattering particles 203 may include at least one of TiO2, BaTiO3, ZrO2, SiO4, ZnO, SiO2, SiO, TiO2, ZrO2, and AlO4, and the average diameter of the scattering particles 203 may be less than 1 μm, but the material and size of the scattering particles 203 are not limited thereto.

[0127] For example, when third light L3 and fourth light L4 are introduced into the organic light emitting display device according to another embodiment of the present disclosure in parallel from the outside, the third light L3 is reflected by the first electrode 190 a to escape to the outside again, while the fourth light L4 is reflected by the first electrode 190 a and passes through the second portion 202. In this case, when the fourth light L4 is scattered by the scattering particles 203 provided in the second portion 202, the fourth light L4 has a moving path different from that of the third light L3.

[0128] According to another embodiment of the present disclosure, by changing the path of some light among the light introduced from the outside by the second portion 202 of the dam 200 , the formation of uneven patterns such as rainbow unevenness caused by enhanced interference of the third light L3 and the fourth light L4 can be prevented.

[0129] Furthermore, among the external light entering the organic light-emitting display device according to an embodiment of the present disclosure, the light that passes through the second portion 202 is scattered by the scattering particles 203 provided in the second portion 202, and the movement path of the light that passes through the second portion 202 is different from the movement path of the light that does not pass through the second portion 202. In this case, similarly, the movement paths of the light that passes through the second portion 202 and the light that does not pass through the second portion 202 are different, so that the formation of uneven patterns caused by enhanced interference can be prevented. Therefore, since the uneven patterns formed by the reflection of external light are eliminated, the user's visibility can be improved.

[0130] Figure 8 is a plan view showing an example of a pixel included in an organic light emitting display device according to another embodiment of the present disclosure. Figure 8 The embodiment of the invention is similar to the embodiment of the invention except the color filter. Figure 3 The implementation methods are the same, so the following will mainly describe different configurations.

[0131] like Figure 8 As shown, an organic light emitting display device according to another embodiment of the present disclosure includes a plurality of pixels P, a color filter 260 , and a black matrix BM having an opening OP.

[0132] The color filters 260a, 260b, 260c, and 260d include a first color filter 260a, a second color filter 260b, a third color filter 260c, and a fourth color filter 260d. The color filters 260a, 260b, 260c, and 260d can transmit light of the same wavelength band as the color of the light emitted from the light-emitting regions E1, E2, E3, and E4, respectively. For example, the first color filter 260a is arranged to correspond to the first light-emitting region E1 and can transmit red (R) light, the second color filter 260b and the fourth color filter 260d are arranged to correspond to the second light-emitting region E2 and the fourth light-emitting region E4, respectively, and can transmit green (G) light, and the third color filter 260c is arranged to correspond to the third light-emitting region E3 and can transmit blue (B) light.

[0133] and Figure 3 Depending on the embodiment, the color filters 260a, 260b, 260c, and 260d may be formed in a shape different from that of the light-emitting regions E1, E2, E3, and E4. For example, the light-emitting regions E1, E2, E3, and E4 are arranged in an octagonal shape, while the color filters 260a, 260b, 260c, and 260d may be divided into quadrilateral shapes. However, the present disclosure is not limited thereto.

[0134] In addition, each of the color filters 260 a , 260 b , 260 c , and 260 d may be continuously formed without being spaced apart from each other.

[0135] At the same time, Figure 8 In the embodiment, color filters 260a, 260b, 260c, and 260d are formed only on the light emitting regions E1, E2, E3, and E4 provided in the pixel P, and Figure 8 Color filters 260a, 260b, 260c, and 260d that are the same as the color filters 260a, 260b, 260c, and 260d provided in the pixel P are formed in the other light emitting regions shown in FIG.

[0136] Figure 9 is a cross-sectional view of a pixel included in an organic light-emitting display device according to another embodiment of the present disclosure, and Figure 9 Corresponding to Figure 8 Section II-II'. At the same time, Figure 9 The embodiment is similar to the embodiment of FIG. 1 except for the configuration of the color filter and the black matrix. Figure 4 The implementation modes are the same, and therefore different configurations will be mainly described below.

[0137] like Figure 9 As shown, an organic light-emitting display device according to another embodiment of the present disclosure includes a first substrate 111, a buffer layer 120, an active layer 130, a gate insulating layer 140, a gate electrode 150, an interlayer insulating layer 160, a source electrode 171, a drain electrode 172, a planarization layer 180, first electrodes 190a, 190b and 190c, a dam 200, organic light-emitting layers 210a, 210b and 210c, second electrodes 220a, 220b and 220c, an encapsulation layer 230, a touch electrode 240, a touch insulating layer 250, color filters 260a, 260b and 260c, a black matrix 270, an outer coating layer 280 and a second substrate 112.

[0138] According to another embodiment of the present disclosure, color filters 260a, 260b, and 260c may be formed on the touch insulation layer 250. Meanwhile, when the touch electrodes 240 and the touch insulation layer 250 are omitted, the color filters 260a, 260b, and 260c may be formed on the encapsulation layer 230.

[0139] The color filters 260a, 260b, and 260c include a first color filter 260a, a second color filter 260b, and a third color filter 260c. The color filters 260a, 260b, and 260c may correspond to the light-emitting areas E1, E2, and E3, respectively. For example, when overlapping with the first light-emitting element EL1, the first color filter 260a may transmit light emitted from the first light-emitting area E1 of the first light-emitting element EL1, such as red (R) light. When overlapping with the second light-emitting element EL2, the second color filter 260b may transmit light emitted from the second light-emitting area E2 of the second light-emitting element EL2, such as green (G) light. In addition, when overlapping with the third light-emitting element EL3, the third color filter 260c may transmit light emitted from the third light-emitting area E3 of the third light-emitting element EL3, such as blue (B) light.

[0140] The color filters 260a, 260b, and 260c may be arranged to contact each other. For example, the first color filter 260a and the second color filter 260b may contact each other in the region forming the embankment 200 that divides the first light-emitting region E1 and the second light-emitting region E2. Thus, one side (e.g., the right side) of the first color filter 260a may contact one side (e.g., the left side) of the second color filter 260b, and the second color filter 260b and the third color filter 260c may contact each other in the region forming the embankment 200 that divides the second light-emitting region E2 and the third light-emitting region E3.

[0141] A black matrix 270 may be formed on the color filters 260a, 260b, and 260c. Specifically, the black matrix 270 may be disposed so as to contact a portion of the upper surfaces of the color filters 260a, 260b, and 260c. For example, the black matrix 270 may be disposed between the first light-emitting region E1 and the second light-emitting region E2 to cover a portion of the upper surface of the first color filter 260a and a portion of the upper surface of the second color filter 260b, and the black matrix 270 may be disposed between the second light-emitting region E2 and the third light-emitting region E3 to cover a portion of the upper surface of the second color filter 260b and a portion of the upper surface of the third color filter 260c.

[0142] Meanwhile, although not specifically shown, the black matrix 270 includes scattering particles configured to scatter light (see Figure 5 273). By forming in this manner, the black matrix 270 can prevent external light from being introduced into the organic light-emitting display device according to another embodiment of the present disclosure and being reflected by the electrodes and wiring. Therefore, the formation of uneven patterns can be prevented. Figure 5 The principle of preventing the formation of the uneven pattern is described in detail, and thus a detailed description thereof will be omitted.

[0143] Figure 10is a cross-sectional view of a pixel included in an organic light-emitting display device according to another embodiment of the present disclosure. In this case, Figure 10 Corresponding to Figure 8 Section II-II'. At the same time, Figure 10 The embodiment of the invention is similar to the embodiment of the invention except the configuration of the black matrix. Figure 9 The implementation modes are the same, and therefore different configurations will be mainly described below.

[0144] like Figure 10 As shown, an organic light-emitting display device according to another embodiment of the present disclosure includes a first substrate 111, a buffer layer 120, an active layer 130, a gate insulating layer 140, a gate electrode 150, an interlayer insulating layer 160, a source electrode 171, a drain electrode 172, a planarization layer 180, first electrodes 190a, 190b and 190c, a dam 200, organic light-emitting layers 210a, 210b and 210c, second electrodes 220a, 220b and 220c, an encapsulation layer 230, a touch electrode 240, a touch insulating layer 250, color filters 260a, 260b and 260c, a black matrix 270, an outer coating layer 280 and a second substrate 112.

[0145] The black matrix 270 according to another embodiment of the present disclosure includes a first portion 271 and a second portion 272. Figure 4 Different from the embodiment, the first portion 271 and the second portion 272 may be spaced apart from each other without contacting each other.

[0146] In this case, the first portion 271 is disposed between the color filters 260a, 260b, and 260c to separate the color filters 260a, 260b, and 260c, and the second portion 272 is disposed on the color filters 260a, 260b, and 260c to prevent uneven patterns from being formed when external light is introduced and reflected.

[0147] Each of the color filters 260a, 260b, 260c, and 260d may be disposed in contact with each other without being spaced apart from each other, and furthermore, each of the color filters 260a, 260b, 260c, and 260d may be in contact with each other in a region overlapping with the black matrix 270. For example, a side surface of the first color filter 260a and a side surface of the second color filter 260b may be in contact with each other between the first portion 271 and the second portion 272.

[0148] The first portion 271 of the black matrix 270 may be provided at the boundaries between the color filters 260a, 260b, and 260c. For example, the first portion 271 may be provided at the region where the first color filter 260a and the second color filter 260b contact each other, and the first portion 271 may be provided at the region where the second color filter 260b and the third color filter 260c contact each other. Since the first portion 271 is formed in this manner, it is possible to prevent light passing through adjacent color filters 260a, 260b, and 260c from mixing with each other.

[0149] Meanwhile, although not specifically shown, the first portion 271 may include scattering particles for scattering light (see Figure 5 273).

[0150] The second portion 272 of the black matrix 270 is formed on the color filters 260a, 260b, and 260c. Specifically, the second portion 272 can be arranged to contact a portion of the upper surface of the color filters 260a, 260b, and 260c. For example, the second portion 272 can be arranged between the first light-emitting region E1 and the second light-emitting region E2 to cover a portion of the upper surface of the first color filter 260a and a portion of the upper surface of the second color filter 260b, and the second portion 272 can be arranged between the second light-emitting region E2 and the third light-emitting region E3 to cover a portion of the upper surface of the second color filter 260b and a portion of the upper surface of the third color filter 260c.

[0151] Meanwhile, although not specifically shown, the second portion 272 of the black matrix 270 includes scattering particles configured to scatter light (see Figure 5 273). By forming in this manner, the second portion 272 of the black matrix 270 can prevent external light from being introduced into the organic light-emitting display device according to another embodiment of the present disclosure and being reflected by the electrodes and wiring. Therefore, the formation of uneven patterns can be prevented. Figure 5 The principle of preventing the formation of the uneven pattern is described in detail, and thus a detailed description thereof will be omitted.

[0152] Therefore, the present disclosure may have the following advantages:

[0153] According to an embodiment of the present disclosure, a black matrix includes a first portion and a second portion, the first portion having a thickness that does not transmit light, the second portion being formed on the first portion, wherein the second portion has a thickness that allows light to be transmitted therethrough and includes scattering particles that scatter light, thereby preventing light transmitted through a color filter from mixing and preventing the formation of an uneven pattern when external light introduced into an organic light-emitting display device is reflected by electrodes and wiring.

[0154] According to an embodiment of the present disclosure, by forming a plurality of light-emitting areas and black matrix openings arranged to correspond to n-gons (n is an integer of 6 or greater), circles, or ellipses in the light-emitting areas, and maintaining a constant distance from one side of the light-emitting area to either side of the black matrix opening, it is possible to prevent an uneven pattern from being formed by external light introduced into the organic light-emitting display device and reflected by the electrodes and wiring.

[0155] According to the embodiments of the present disclosure, since the formation of an uneven pattern by external light introduced into the organic light emitting display device and reflected by electrodes and wirings is prevented or minimized, user visibility may be improved.

[0156] It will be apparent to those skilled in the art that various substitutions, modifications and variations may be made within the scope of the present disclosure without departing from the spirit and scope of the present disclosure. Therefore, the scope of the present disclosure is indicated by the appended claims, and all changes or modifications derived from the meaning, scope and equivalent concepts of the claims should be interpreted as included within the scope of the present disclosure.

Claims

1. An organic light-emitting display device, comprising: substrate; a first light-emitting region and a second light-emitting region, wherein the first light-emitting region is disposed on the substrate and emits light of a first color, and the second light-emitting region is disposed on the substrate and emits light of a second color different from the first color; a first color filter, the first color filter being disposed on the first light-emitting area; a second color filter, the second color filter being disposed on the second light emitting area; as well as a black matrix disposed in contact with at least one of an upper surface of the first color filter and an upper surface of the second color filter, Wherein, the black matrix includes scattering particles.

2. The organic light emitting display device according to claim 1, in, The black matrix includes a first portion disposed between the first color filter and the second color filter and a second portion disposed on the first portion. One end of the second portion is configured to protrude from one end of the first portion by a first length.

3. The organic light emitting display device according to claim 2, in, The thickness of the first portion is greater than the thickness of the second portion.

4. The organic light emitting display device according to claim 3, in, the first portion does not allow light emitted from either the first light emitting area or the second light emitting area to pass therethrough, And the second portion passes light emitted from either one of the first light emitting area and the second light emitting area.

5. The organic light emitting display device according to claim 2, in, The first portion and the second portion are in contact with each other.

6. The organic light emitting display device according to claim 2, in, The second portion contacts at least one of an upper surface of the first color filter and an upper surface of the second color filter.

7. The organic light emitting display device according to claim 2, in, The first portion contacts at least one of a side surface of the first color filter and a side surface of the second color filter.

8. The organic light emitting display device according to claim 2, in, The second portion has a thickness greater than or equal to 0.7 μm and less than or equal to 2 μm.

9. The organic light emitting display device according to claim 2, in, A first protruding length of the second portion is greater than or equal to 1 μm and less than or equal to 4 μm.

10. The organic light emitting display device according to claim 2, in, the first portion and the second portion are not in contact with each other, And a side surface of the first color filter and a side surface of the second color filter are in contact between the first portion and the second portion of the black matrix.

11. The organic light emitting display device according to claim 1, in, a side surface of the first color filter and a side surface of the second color filter are in contact with each other, And side surfaces of the first color filter and the second color filter, which are in contact with each other, overlap the black matrix.

12. The organic light emitting display device according to any one of claims 1 to 11, further comprising: a dam, the dam being used to separate the first light emitting area and the second light emitting area, Wherein, the dam includes scattering particles.

13. The organic light emitting display device according to claim 12, in, The dam includes a first portion disposed between the first light emitting region and the second light emitting region and a second portion disposed on the first portion. And one end of the second portion of the embankment is configured to protrude from one end of the first portion of the embankment by a second length.

14. The organic light emitting display device according to claim 13, in, The thickness of the second portion of the bank is greater than or equal to 0.7 μm and less than or equal to 2 μm.

15. The organic light emitting display device according to claim 13, in, A second length by which the second portion of the bank protrudes is greater than or equal to 1 μm and less than or equal to 4 μm.

16. The organic light emitting display device according to claim 1, in, The first color filter and the first light emitting region have different shapes, and / or the first color filter and the second color filter are continuously formed without being spaced apart from each other.

17. An organic light-emitting display device, comprising: a substrate comprising a first light-emitting region and a second light-emitting region; a first color filter, the first color filter being disposed on the first light-emitting area; a second color filter, the second color filter being disposed on the second light emitting area; as well as a black matrix, the black matrix being disposed on the first color filter and the second color filter, The black matrix includes a first opening corresponding to the first light-emitting area and a second opening corresponding to the second light-emitting area. And the black matrix includes scattering particles.

18. The organic light emitting display device according to claim 17, in, The first color filter and the second color filter are disposed to be spaced apart from each other by the black matrix.

19. The organic light emitting display device according to claim 17, in, The first color filter and the second color filter are in contact with each other.

20. The organic light emitting display device according to claim 17, in, An upper surface of any one of the first color filter and the second color filter is covered by the black matrix.

21. The organic light emitting display device according to claim 17, in, The first light emitting area and the second light emitting area are arranged as an n-gon, And the first opening and the second opening are arranged as an n-gon, where n is an integer of 6 or greater.

22. The organic light emitting display device according to claim 21, in, The first color filter and the second color filter are arranged in an n-gon.

23. The organic light emitting display device according to claim 20, in, The first light emitting area has a first side and a second side, The first opening has a third side facing the first side and a fourth side facing the second side, The distance between the first side and the third side is the same as the distance between the second side and the fourth side.

24. The organic light emitting display device according to claim 17, in, The first color filter and the first light emitting region have different shapes, and / or the first color filter and the second color filter are continuously formed without being spaced apart from each other.

25. The organic light emitting display device according to claim 17, further comprising: a dam, the dam being used to separate the first light emitting area and the second light emitting area, Wherein, the dam includes scattering particles.

Images