Organic light emitting display device

Abstract

An organic light emitting display device is disclosed. The organic light emitting display device includes a substrate, a circuit element layer disposed on the substrate, a plurality of pixel definition films disposed on the circuit element layer, a plurality of light emitting elements disposed between the plurality of pixel definition films and having a first electrode and a light emitting layer and a second electrode, an encapsulation layer disposed on the second electrode of the plurality of light emitting elements, a black matrix disposed on the encapsulation layer and overlapping the pixel definition films, and a plurality of color filter layers disposed between the black matrix. The plurality of pixel definition films includes a plurality of light absorbing portions.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2024-0192336, filed on December 20, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to organic light-emitting display devices. Background Technology

[0004] Based on the material of the light-emitting layer, electroluminescent display devices can be classified into inorganic light-emitting display devices and organic light-emitting display devices.

[0005] Active-matrix organic light-emitting diode (OLED) displays include self-emissive organic light-emitting diodes (hereinafter referred to as "OLEDs") and offer advantages such as fast response time, high luminous efficiency, high brightness, and wide viewing angle. In an OLED display, the OLED is formed in each pixel. OLED displays not only possess fast response time and excellent luminous efficiency, brightness, and viewing angle, but also excellent contrast ratio and color reproduction rate because they can represent black as a perfect black. Summary of the Invention

[0006] The problem to be solved by the embodiments of this disclosure is to provide an organic light-emitting display device that can block reflections by applying a light-absorbing color material as a pixel-defining film for pixel separation, so that light introduced from the outside and transmitted through the color filter layer is absorbed by the light-absorbing portion.

[0007] The problems to be solved by the embodiments of this disclosure are not limited to those mentioned above, and those skilled in the art will clearly understand other problems not mentioned based on the following description.

[0008] An organic light-emitting display device according to an embodiment of the present disclosure includes: a substrate; a circuit element layer disposed on the substrate; a plurality of pixel defining films disposed on the circuit element layer; a plurality of light-emitting elements disposed between the plurality of pixel defining films and having a first electrode, a light-emitting layer, and a second electrode; an encapsulation layer disposed on the second electrode of the plurality of light-emitting elements; a black matrix disposed on the encapsulation layer and overlapping the pixel defining films; and a plurality of color filter layers disposed between the black matrices, wherein the plurality of pixel defining films may include a plurality of light-absorbing portions.

[0009] An organic light-emitting display device according to another embodiment of the present disclosure includes: a substrate having a plurality of sub-pixel regions; a plurality of light-emitting elements disposed on the substrate and located in the plurality of sub-pixel regions; and a plurality of pixel-defining films that separate the plurality of light-emitting elements from each other, wherein the plurality of pixel-defining films may include a plurality of light-absorbing portions.

[0010] In addition to the means for solving the problem mentioned above, specific details of various examples based on this disclosure are also included in the following description and figures.

[0011] According to this disclosure, by applying a selective light absorption portion as a pixel-limiting film to each sub-pixel, light transmitted through the color filter layer of the CoE structure is absorbed by the pixel-limiting film, thereby blocking light reflection and enabling the realization of Deep Black technology.

[0012] The effects of this disclosure are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art to which the technical concept of this disclosure pertains based on the following description. Attached Figure Description

[0013] The above and other objects, features, and advantages of this disclosure will become more apparent to those skilled in the art from the exemplary embodiments described in detail with reference to the accompanying drawings, in which:

[0014] Figure 1 This is a schematic plan view of a plurality of sub-pixels of an organic light-emitting display device according to an embodiment of the present disclosure;

[0015] Figure 2 This is a plan view showing the first light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to an embodiment of the present disclosure;

[0016] Figure 3 This is a plan view showing the first light-absorbing portion and the second light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to an embodiment of the present disclosure;

[0017] Figure 4 This is a plan view showing the first light-absorbing portion, the second light-absorbing portion, and the third light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to an embodiment of the present disclosure;

[0018] Figure 5 It is along Figure 1 The cross-sectional view taken by line I-I' shows a cross-section of an organic light-emitting display device according to an embodiment of the present disclosure;

[0019] Figure 6It is a graph showing the transmittance of the R, G, B color layers in an organic light-emitting display device according to an embodiment of the present disclosure as a function of wavelength.

[0020] Figure 7 This is a cross-sectional view of the red sub-pixel region in an organic light-emitting display device according to another embodiment of the present disclosure;

[0021] Figure 8 This is a graph showing the transmittance as a function of wavelength in a pixel-defining film (cyan portion) composed of a green light-absorbing portion and a blue light-absorbing portion disposed on the red sub-pixel region side of an organic light-emitting display device according to another embodiment of the present disclosure.

[0022] Figure 9 This is a cross-sectional view of a green sub-pixel region in an organic light-emitting display device according to another embodiment of the present disclosure;

[0023] Figure 10 This is a graph showing the transmittance as a function of wavelength in a pixel-defining film (magenta portion) composed of a red light-absorbing portion and a blue light-absorbing portion disposed on the green sub-pixel region side of an organic light-emitting display device according to another embodiment of the present disclosure.

[0024] Figure 11 This is a cross-sectional view of the blue sub-pixel region in an organic light-emitting display device according to another embodiment of the present disclosure;

[0025] Figure 12 This is a graph showing the transmittance of a pixel-defining film (yellow portion) composed of a red light-absorbing portion and a green light-absorbing portion in an organic light-emitting display device according to another embodiment of the present disclosure as a function of wavelength.

[0026] Figure 13 This is a schematic plan view of a plurality of sub-pixels of an organic light-emitting display device according to another embodiment of the present disclosure;

[0027] Figure 14 This is a plan view showing the first light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to another embodiment of the present disclosure;

[0028] Figure 15 This is a plan view showing the first light-absorbing portion and the second light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to another embodiment of the present disclosure;

[0029] Figure 16 This is a plan view showing the first light-absorbing portion, the second light-absorbing portion, and the third light-absorbing portion of a pixel-defining film in an organic light-emitting display device according to another embodiment of the present disclosure; and

[0030] Figure 17 It is along Figure 13 The cross-sectional view taken by line II-II' shows a cross-section of an organic electroluminescent display device according to another embodiment of the present disclosure. Detailed Implementation

[0031] The advantages and features of this disclosure, as well as methods for implementing them, will become apparent from the embodiments described in detail below with reference to the accompanying drawings. However, this disclosure is not limited to the embodiments disclosed herein, but can be implemented in various different forms; rather, these embodiments are provided to complete the disclosure and enable those skilled in the art to fully understand its scope.

[0032] The shapes, dimensions, scales, angles, numbers, etc., of the elements shown in the accompanying drawings to illustrate embodiments of this disclosure are illustrative only and are not intended to be limiting. Throughout the specification, the same reference numerals may designate the same parts. Furthermore, in describing this disclosure, detailed descriptions of related known technologies may be omitted so as not to obscure the nature of this disclosure. Terms such as “comprising,” “having,” and “consisting of” as used herein are generally intended to allow for the addition of additional parts, unless these terms are used in conjunction with the term “only.” Unless otherwise specified, references to singular nouns of parts include the plural of that noun.

[0033] When interpreting components, they are interpreted as including tolerance margins, even if not explicitly stated otherwise.

[0034] When describing positional relationships, phrases such as "above," "over," "below," "next to," or "adjacent to" describe the positional relationship between two components. One or more other components may be located between these two components unless "immediately adjacent," "directly," or "right next to" is used.

[0035] When describing temporal relationships, "after," "following," "next," or "before" describes a preceding or succeeding relationship in time, which may not be continuous unless "immediately" or "directly" is used.

[0036] The terms "first," "second," etc., are used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another. Therefore, within the technical scope of this disclosure, the "first component" mentioned below can be the "second component."

[0037] Terms such as first, second, A, B, (a), or (b) may be used to describe elements of embodiments of this disclosure. Such terms are intended only to distinguish one component from another and not to define the nature, sequence, order, or number of such components.

[0038] When a component is described as “connected,” “coupled,” “accessed,” or “attached” to another component, it should be understood that the component may be directly connected, coupled, accessed, or attached to another component, but may also be indirectly connected, coupled, accessed, or attached to components with other components inserted between them, unless otherwise specifically stated.

[0039] When a component is described as "in contact" or "overlapping" with another component, it should be understood that the component may be in direct contact or overlap with the other component, but other components may also be "inserted" between these components, resulting in indirect contact or overlap, unless otherwise specifically stated.

[0040] It should be understood that the term "at least one" includes all possible combinations of one or more related components. For example, the meaning of "at least one of the first component, the second component, and the third component" can be understood to include not only the first component, the second component, or the third component, but also any combination of two or more of the first component, the second component, and the third component.

[0041] The terms “first direction,” “second direction,” “third direction,” “X-axis direction,” “Y-axis direction,” and “Z-axis direction” should not be interpreted merely as a geometric relationship of perpendicularity to each other, but can refer to a broader range of orientations in which the configuration of this disclosure can function.

[0042] As used herein, the apparatus may include a display device, such as a liquid crystal module (LCM) or an organic light-emitting display (OLED) module including a display panel and a driver for driving the display panel. It may also include assemblies of electronic equipment or assemblies, such as laptops, televisions, computer monitors, vehicle or automotive equipment, or equipment for another form of vehicle, and mobile electronic devices such as smartphones or tablets, which are complete products or finished goods including LCMs, OLED modules, etc.

[0043] Therefore, the apparatus in this disclosure may include the display device itself, such as an LCM module, an OLED module, etc., as well as complete sets of equipment, which are application products or end consumer devices including LCM, OLED modules, etc.

[0044] Furthermore, in some embodiments, LCM modules and OLED modules, which consist of display panels and drivers, can be referred to as display devices, while electronic devices that are finished products including LCM and OLED modules (or panels) can be distinguished and referred to as assemblies.

[0045] For example, a display device may include a liquid crystal display (LCD) panel or an organic light-emitting diode (OLED) display panel, and a source printed circuit board (PCB) as a control component for driving the display panel. The assembly may also include an assembly of PCBs, which are control components electrically connected to the source PCB to drive the entire assembly.

[0046] The display panel used in the embodiments of this disclosure can be any type of display panel, such as a liquid crystal display panel, an organic light-emitting diode (OLED) display panel, and an electroluminescent display panel, but the embodiments are not limited thereto. For example, according to the embodiments of this disclosure, the display panel can be a display panel capable of generating sound by vibration via a vibration device. The display panel applied to the display device according to the embodiments of this disclosure is not limited to the form or size of the display panel.

[0047] Each feature in the various embodiments of this disclosure may be coupled or combined with each other, either wholly or in part, and may be technically interlocked and operated in various ways, and each of the embodiments may be performed independently or in combination with each other.

[0048] In the following, various embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. For ease of explanation, the proportions of the components shown in the drawings differ from the actual proportions and are not limited to the proportions shown in the drawings.

[0049] Various display devices, such as organic electroluminescent display devices, electrophoretic display devices, micro light-emitting diode (LED) display devices, and micro LED display devices, can be applied to the display devices of this disclosure, but for ease of explanation, organic electroluminescent display devices will be used as examples in the following description.

[0050] Figure 1 This is a schematic plan view of a plurality of sub-pixels of an organic light-emitting display device according to an embodiment of the present disclosure. Figure 2 This is a plan view showing the first light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to an embodiment of the present disclosure. Figure 3 This is a plan view showing the first light-absorbing portion and the second light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to an embodiment of the present disclosure. Figure 4This is a plan view showing the first light-absorbing portion, the second light-absorbing portion, and the third light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to an embodiment of the present disclosure.

[0051] Reference Figures 1 to 4 An organic light-emitting display device according to an embodiment of the present disclosure may include a plurality of sub-pixels SP1, SP2 and SP3, and a first pixel defining film to a third pixel defining film 132-1, 132-2 and 132-3 disposed in the boundary region between the plurality of sub-pixels SP1, SP2 and SP3.

[0052] Multiple sub-pixels SP1, SP2 and SP3 may include a first sub-pixel SP1 arranged in a first direction (e.g., the X-axis direction), a second sub-pixel SP2 arranged adjacent to the first sub-pixel SP1 in a second direction (e.g., the Y-axis direction), and a third sub-pixel SP3 arranged adjacent to the first sub-pixel SP1 and the second sub-pixel SP2 in the first direction (e.g., the X-axis direction).

[0053] Multiple sub-pixels SP1, SP2, and SP3 form a unit pixel and can be arranged repeatedly in a first direction and a second direction. However, the arrangement structure of the multiple sub-pixels SP1, SP2, and SP3 can be changed to various forms known in the art.

[0054] In the first sub-pixel SP1, light of a first color, such as red, can be emitted; in the second sub-pixel SP2, light of a second color, such as green, can be emitted; and in the third sub-pixel SP3, light of a third color, such as blue, can be emitted.

[0055] Reference Figures 1 to 5 The first pixel defining film 132-1 may be located between the red light-emitting element 130R and the green light-emitting element 130G. The first pixel defining film 132-1 may include a third light-absorbing portion 132b and a first light-absorbing portion 132r and a second light-absorbing portion 132g disposed between the third light-absorbing portion 132b and the planarization layer 129. The first light-absorbing portion 132r may refer to the red light-absorbing portion, the second light-absorbing portion 132g may refer to the green light-absorbing portion, and the third light-absorbing portion 132b may refer to the blue light-absorbing portion.

[0056] Reference Figures 1 to 5 The second pixel defining film 132-2 may be located between the green light-emitting element 130G and the blue light-emitting element 130B. The second pixel defining film 132-2 may include a first light-absorbing portion 132r, and a second light-absorbing portion 132g and a third light-absorbing portion 132b stacked on the first light-absorbing portion 132r.

[0057] Reference Figures 1 to 5 The third pixel defining film 132-3 may be located between the blue light-emitting element 130B and the red light-emitting element 130R. The third pixel defining film 132-3 may include a first light-absorbing portion 132r and a third light-absorbing portion 132b, and a second light-absorbing portion 132g stacked on the first light-absorbing portion 132r and the third light-absorbing portion 132b.

[0058] Here, each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 may include three light absorbing portions 132r, 132g and 132b. However, in this disclosure, each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 is not limited thereto.

[0059] The first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 are disposed in the boundary region between multiple sub-pixels SP1, SP2 and SP3 to define individual sub-pixel SP1, SP2 and SP3 regions.

[0060] Figure 5 It is along Figure 1 The cross-sectional view taken by line I-I' shows a cross-section of an organic light-emitting display device according to an embodiment of the present disclosure.

[0061] Reference Figure 5 An organic light-emitting display device 100 according to an embodiment of the present disclosure may include a substrate 110, a circuit element layer 200, a plurality of light-emitting elements 130, a pixel defining film 132, an encapsulation layer 140, a black matrix 150, a color filter 160, and a cover glass 170.

[0062] The substrate 110 can be made of glass or transparent plastic, but is not limited to these, and can also be made of semiconductor materials such as silicon wafers.

[0063] When the organic light-emitting display device according to the embodiments of the present disclosure is configured as a top-emitting method, not only transparent materials but also opaque materials can be used as the material of the substrate 110. However, when the organic light-emitting display device according to the embodiments of the present disclosure is configured as a bottom-emitting method, a transparent material can be used as the material of the substrate 110.

[0064] The circuit element layer 200 may be formed on the substrate 110. The circuit element layer 200 may include driving thin-film transistors.

[0065] The driving thin-film transistor may include an active layer 120 disposed on a substrate 110, a gate insulating film 121 disposed on the active layer 120, and a gate electrode 123 disposed on the gate insulating film 121. The active layer 120 may include a channel region 120a, a source region 120b, and a drain region 120c.

[0066] Although the driving thin-film transistor is shown as having a top gate structure with an interlayer insulating film 125 disposed on the gate electrode 123 and disposed on the interlayer insulating film 125 and disposed above the active layer 120 through holes disposed in the interlayer insulating film 125 and the gate insulating film 121, the present disclosure may include a driving thin-film transistor having a bottom gate structure with the gate electrode 123 disposed below the active layer 120.

[0067] The circuit element layer 200 may further include a passivation layer 128 and a planarization layer 129 disposed on the driving thin-film transistor. The passivation layer 128 is disposed on the source electrode 126 and the drain electrode 127, and the planarization layer 129 may be disposed on the passivation layer 128.

[0068] The passivation layer 128 and the planarization layer 129 have contact holes, and the first electrode 131 can be connected to the drain electrode 127 through the contact holes. In some cases, the first electrode 131 can be connected to the source electrode 126 through the contact holes.

[0069] The first electrode 131 may be disposed on the planarization layer 129. The first electrode 131 may be configured to correspond to each of a plurality of sub-pixels SP1, SP2, and SP3. The first electrode 131 is a component for supplying holes to the light-emitting layer 133 and may be formed of a conductive material having a high work function. The first electrode 131 may be a transparent conductive layer formed of a transparent conductive oxide (TCO). For example, the first electrode 131 may be formed of one or more transparent conductive oxides selected from, but not limited to, indium tin oxide (ITO), indium zinc oxide (IZO), indium tin zinc oxide (ITZO), tin oxide (SnO2), zinc oxide (ZnO), indium copper oxide (ICO), and aluminum-doped zinc oxide (Al-doped ZnO, AZO).

[0070] In addition to driving thin-film transistors, the circuit element layer 200 may also include various signal lines (including gate lines, data lines, power lines and reference lines), various thin-film transistors (including switching thin-film transistors and sensing thin-film transistors), and capacitors.

[0071] The switching thin-film transistor can be switched according to the gate signal supplied to the gate line to supply the data voltage supplied from the data line to the driving thin-film transistor.

[0072] The driving thin-film transistor can be switched according to the data voltage supplied from the switching thin-film transistor to generate a data current from the power supplied through the power line and supply the data current to the first electrode 131.

[0073] The sensing thin-film transistor is used to sense the threshold voltage deviation that causes image quality degradation in the driving thin-film transistor, and can supply current to the reference line to drive the thin-film transistor in response to a sensing control signal supplied from the gate line or a separate sensing line.

[0074] A capacitor is used to maintain the data voltage supplied to the driving thin-film transistor during a frame and can be connected to the gate terminal and source terminal of the driving thin-film transistor.

[0075] Each of the switching thin-film transistor, the driving thin-film transistor, and the sensing thin-film transistor can be modified to various structures known in the art, such as bottom-gate or top-gate structures.

[0076] The circuit element layer 200 may also include a passivation layer and a planarization layer disposed on the passivation layer to protect the switching thin-film transistor, the driving thin-film transistor and the sensing thin-film transistor.

[0077] Reference Figure 5 Multiple light-emitting elements 130 may be surrounded by first pixel defining films to third pixel defining films 132-1, 132-2, and 132-3. For example, the multiple light-emitting elements 130 may be surrounded by light-absorbing portions 132r, 132g, and 132b of the pixel defining films, and any one of the light-emitting elements 130 and the light-absorbing portions surrounding the light-emitting elements 130 may include different colors. Therefore, the edge of the first electrode 131 patterned on each of the multiple sub-pixels SP1, SP2, and SP3 may be surrounded by first pixel defining films to third pixel defining films 132-1, 132-2, and 132-3. For example, the first electrode 131 may be used as the anode of an electroluminescent display device.

[0078] The first pixel defining film to the third pixel defining film 132-1, 132-2 and 132--3 are disposed in the boundary region between multiple sub-pixels SP1, SP2 and SP3 to define individual sub-pixel SP1, SP2 and SP3 regions.

[0079] A first electrode 131 can be formed on the circuit element layer 200 for each sub-pixel SP1, SP2 and SP3. The first electrode 131 can be used as the anode of the organic light-emitting display device.

[0080] When the organic light-emitting display device according to this disclosure is a bottom-emitting type, such a first electrode 131 may include a transparent electrode. When the organic light-emitting display device according to this disclosure is a top-emitting type, it may include a reflective electrode.

[0081] The pixel defining film 132 is formed at both ends of the first electrode 131 covering the circuit element layer 200, and can be formed at the boundary between multiple sub-pixels SP1, SP2 and SP3.

[0082] The pixel defining film 132 may include first pixel defining films to third pixel defining films 132-1, 132-2, and 132-3. Here, the first pixel defining films to third pixel defining films 132-1, 132-2, and 132-3 may be formed by applying red, green, and blue color absorbing materials. However, this disclosure is not limited thereto.

[0083] The first pixel defining film 132-1 may be located between the red light-emitting element 130R and the green light-emitting element 130G. The first pixel defining film 132-1 may include a third light-absorbing portion 132b and a first light-absorbing portion 132r and a second light-absorbing portion 132g disposed between the third light-absorbing portion 132b and the planarization layer 129.

[0084] The first light-absorbing portion 132r can refer to the red light-absorbing portion, the second light-absorbing portion 132g can refer to the green light-absorbing portion, and the third light-absorbing portion 132b can refer to the blue light-absorbing portion. Here, the first light-absorbing portion 132r can be formed using a red-colored absorbing material. The second light-absorbing portion 132g can be formed using a green-colored absorbing material. The third light-absorbing portion 132b can be formed using a blue-colored absorbing material.

[0085] The second pixel defining film 132-2 may be located between the green light-emitting element 130G and the blue light-emitting element 130B. The second pixel defining film 132-2 may include a first light-absorbing portion 132r, and a second light-absorbing portion 132g and a third light-absorbing portion 132b stacked on the first light-absorbing portion 132r.

[0086] The third pixel defining film 132-3 may be located between the blue light-emitting element 130B and the red light-emitting element 130R. The third pixel defining film 132-3 may include a first light-absorbing portion 132r and a third light-absorbing portion 132b, and a second light-absorbing portion 132g stacked on the first light-absorbing portion 132r and the third light-absorbing portion 132b.

[0087] Here, each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 may include three light absorbing portions 132r, 132g and 132b. However, in this disclosure, each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 is not limited thereto.

[0088] A red light-emitting element 130R may be spaced apart from a first light-absorbing portion (i.e., a red light-absorbing portion) 132r, with at least one of a second light-absorbing portion 132g and a third light-absorbing portion 132b (i.e., a green light-absorbing portion 132g and a blue light-absorbing portion 132b) located between them. A green light-emitting element 130G may be spaced apart from a green light-absorbing portion 132g, with at least one of a red light-absorbing portion 132r and a blue light-absorbing portion 132b located between them. A blue light-emitting element 130B may be spaced apart from a blue light-absorbing portion 132b, with at least one of a red light-absorbing portion 132r and a green light-absorbing portion 132g located between them.

[0089] The first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 are disposed in the boundary region between multiple sub-pixels SP1, SP2 and SP3 to define individual sub-pixel SP1, SP2 and SP3 regions.

[0090] A light-emitting layer 133 can be formed on the first electrode 131 located in multiple sub-pixels SP1, SP2 and SP3. The light-emitting layer 133 may include a red light-emitting layer 133r located in the first sub-pixel SP1, a green light-emitting layer 133g located in the second sub-pixel SP2 and a blue light-emitting layer 133b located in the third sub-pixel SP3.

[0091] Here, the first sub-pixel SP1 is a red sub-pixel, the second sub-pixel SP2 is a green sub-pixel, and the third sub-pixel SP3 can be a blue sub-pixel.

[0092] For each of the first to third sub-pixels SP1, SP2 and SP3, the light-emitting layer 133 can be disconnected from each other through the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3.

[0093] The light-emitting layer 133 may include a hole injection layer (HIL), a hole transport layer (HTL), an emission material layer (EML), an electron transport layer (ETL), and an electron injection layer (EIL).

[0094] The light-emitting layer 133 may include a red light-emitting layer 133r, a green light-emitting layer 133g, and a blue light-emitting layer 133b. The red light-emitting layer 133r is located in the red sub-pixel SP1 region, the green light-emitting layer 133g is located in the green sub-pixel SP2 region, and the blue light-emitting layer 133b may be located in the blue sub-pixel SP3 region.

[0095] The red luminescent layer 133r can refer to an organic material luminescent layer that emits red light. The green luminescent layer 133g can refer to an organic material luminescent layer that emits green light. The blue luminescent layer 133b can refer to an organic material luminescent layer that emits blue light.

[0096] A second electrode 135 can be formed on the pixel defining film 132 and the light-emitting layer 133. The second electrode 135 can be formed continuously without interruption throughout the entire internal and boundary regions of the plurality of sub-pixels SP1, SP2 and SP3.

[0097] The second electrode 135 may be formed of a metallic material with a low work function to smoothly supply electrons to the light-emitting layer 133. For example, the second electrode 135 may be formed of a metallic material selected from calcium (Ca), barium (Ba), aluminum (Al), silver (Ag), and alloys containing one or more of these materials, but is not limited thereto.

[0098] The second electrode 135 can be formed as a layer on the first electrode 131. That is, the second electrode 135 can be formed as a single layer in the sub-pixels SP1, SP2 and SP3. When the organic light-emitting display device 100 is driven by a top-emitting method, the second electrode 135 can be formed with a very thin thickness to become substantially transparent.

[0099] The second electrode 135 can be used as the cathode of an electroluminescent display device. When the organic light-emitting display device according to this disclosure is a top-emitting type, such a second electrode 135 can be composed of a transparent electrode or a translucent electrode. When the organic light-emitting display device according to this disclosure is a bottom-emitting type, it can be composed of a reflective electrode.

[0100] An encapsulation layer 140 can be formed on the second electrode 135. The encapsulation layer 140 can be used to prevent external moisture or oxygen from penetrating into the organic light-emitting element 130.

[0101] The encapsulation layer 140 may include a first passivation layer 141, a first organic insulating layer 142, a second passivation layer 143, a lower buffer layer 144, an insulating material layer 145, and a second organic insulating layer 146. However, this disclosure is not limited thereto.

[0102] In this configuration, the first passivation layer 141 and the second passivation layer 143 may each be independently formed from one or more of silicon nitride (SiNx), silicon oxide (SiOx), aluminum oxide (AlOx) and silicon nitride oxide (SiON), but are not limited thereto.

[0103] The first organic insulating layer 142 and the second organic insulating layer 146 may be formed from one or more of acrylic resin, epoxy resin, polyimide, polyethylene and silicon carbide (SiOC), but are not limited thereto.

[0104] The first buffer layer 144 may be formed from one or more inorganic insulating materials, such as silicon nitride (SiNx), silicon oxide (SiOx), aluminum oxide (AlOx), and silicon nitride oxide (SiON), but is not limited thereto.

[0105] A touch electrode 147 can be formed on the second organic insulating layer 146. The touch electrode 147 can be formed at a position overlapping with the pixel defining film 132.

[0106] A second buffer layer 148 covering the touch electrode 147 can be formed on the second organic insulating layer 146. The second buffer layer 148 can be formed of one or more inorganic insulating materials, such as silicon nitride (SiNx), silicon oxide (SiOx), aluminum oxide (AlOx), and silicon nitride oxide (SiON), but is not limited thereto.

[0107] A black matrix 150 can be formed on the second buffer layer 148 in the region other than the sub-pixel regions SP1, SP2, and SP3. The black matrix 150 can be formed in the region between each of the red, green, and blue color filter layers, for example, in the boundary region between multiple sub-pixels SP1, SP2, and SP3.

[0108] The black matrix 150 can be used as an anti-reflective layer to maintain the high brightness of the light emitted from the organic light-emitting element 130 while absorbing external light, so as to minimize the degradation of the visibility and contrast of the organic light-emitting display device 100 due to external light.

[0109] The black matrix 150 can absorb external light. Therefore, the degradation of visibility and contrast of the organic light-emitting display device 100 due to external light can be minimized. The black matrix 150 may include a base resin and a black material. The base resin may be one or more selected from cardoyl resins, epoxy resins, acrylate resins, siloxane resins, and polyimides, but is not limited thereto. The black material may be a black pigment selected from carbon-based pigments, metal oxide-based pigments, and organic pigments. For example, carbon-based pigments may be carbon black. For example, metal oxide-based pigments include titanium black (TiNxOy), Cu-Mn-Fe based black pigments, etc., but are not limited thereto. For example, organic pigments may be selected from lactam black, perylene black, and aniline black, but are not limited thereto. Furthermore, RGB black pigments, including red, blue, and green pigments, may be used as the black material, but are not limited thereto.

[0110] A color filter layer 160 can be formed between the black matrices 150, for example on a second buffer layer 148 located in a region of multiple sub-pixels.

[0111] The color filter layer 160 may include a transparent base resin and a color-developing material. For example, the transparent base resin may be selected from, but is not limited to, polyacrylate, polymethyl methacrylate, polyimide, polyvinyl alcohol, polyethylene, polypropylene, polystyrene, polyethylene terephthalate, etc. The color-developing material absorbs light in a specific wavelength band and transmits light in other wavelength bands. For example, a red color filter may include a red color-developing material that transmits light in the red wavelength band and absorbs light in the green and blue wavelength bands.

[0112] The color filter layer 160 may include a red color filter layer 161R disposed in the first sub-pixel SP1, a green color filter layer 163G disposed in the second sub-pixel SP2, and a blue color filter layer 165B disposed in the second sub-pixel SP3.

[0113] An outer coating 166 covering the color filter layer 160 can be formed on the black matrix 150. The outer coating 166 can be used to protect internal components from external impacts.

[0114] The outer coating 166 can planarize the upper part of the multiple color filter layers 161R, 163G and 165B and the black matrix 150. For example, the outer coating 166 can be formed of a transparent resin such as acrylic resin, silicone resin, polyester resin, epoxy resin, etc., but is not limited thereto.

[0115] A cover glass 170 can be installed on the outer coating 166.

[0116] Figure 6 This is a graph showing the transmittance of the R, G, and B color layers in an organic light-emitting display device according to an embodiment of the present disclosure as a function of wavelength.

[0117] Reference Figure 6 In the case of “A”, when a conventional black pixel limiting film is applied, light incident on the interior through the color filter layer 160 is reflected to the adjacent sub-pixel area instead of passing through the black pixel limiting film, thereby reducing the color reproduction rate of the adjacent sub-pixels.

[0118] Reference Figure 6In this disclosure, light incident through the color filter layer 160 is transmitted and absorbed at the ends of the red light absorbing portion 132r, green light absorbing portion 132g, and blue light absorbing portion 132b of the stacked structure that constitutes the transparent pixel limiting film 132, thereby reducing reflectivity. In other words, since the pixel limiting film 132 is composed of the red light absorbing portion 132r, green light absorbing portion 132g, and blue light absorbing portion 132b, when external light contacts the red light absorbing portion 132r, green light absorbing portion 132g, and blue light absorbing portion 132b constituting the pixel limiting film 132, the external light is transmitted and absorbed, thereby reducing the proportion of externally reflected light.

[0119] For example, refer to Figure 6 As can be seen, in the red color filter layer 161R in the wavelength range of 580 nm to 650 nm, the transmittance increases to about 95% or higher, while at the side of the pixel defining film 132 located in the boundary region of the red color filter layer 161R, the reflectance decreases to about 10% or lower.

[0120] Reference Figure 6 As can be seen, in the green filter layer 163G in the wavelength range of 500 nm to 580 nm, the transmittance increases to about 90% or higher, while at the side of the pixel defining film 132 located in the boundary region of the green filter layer 163G, the reflectance decreases to about 8% or lower.

[0121] Reference Figure 6 As can be seen, in the blue filter layer 163B in the wavelength range of 380 nm to 480 nm, the transmittance increases to about 80% or higher, while at the side of the pixel defining film 132 located in the boundary region of the blue filter layer 163B, the reflectance decreases to about 5% or lower.

[0122] Therefore, in this disclosure, some of the light incident from the outside is transmitted and absorbed into the pixel defining film 132, and is not reflected to the adjacent sub-pixel regions through the side edges of the red light absorbing portion 132r, green light absorbing portion 132g and blue light absorbing portion 132b of the pixel defining film 132 located in the boundary regions of sub-pixels SP1, SP2 and SP3, thereby improving the color reproduction rate in the sub-pixel regions SP1, SP2 and SP3.

[0123] Figure 7 This is a cross-sectional view of the red sub-pixel region in an organic light-emitting display device according to another embodiment of the present disclosure. Figure 8This is a graph showing the transmittance as a function of wavelength in a pixel-defining film composed of a green light-absorbing portion and a blue light-absorbing portion disposed on the red sub-pixel region side of an organic light-emitting display device according to another embodiment of the present disclosure.

[0124] Reference Figure 7 The first pixel limiting film 132-1 and the third pixel limiting film 132-3 can contact both sides of the red light emitting layer 133r located below the red color filter layer 161R in the first sub-pixel SP1.

[0125] In this respect, the portions of the first pixel defining film 132-1 and the third pixel defining film 132-3 that contact the two ends of the red light-emitting layer 133r may include a green light-absorbing portion 132g and a blue light-absorbing portion 132b. The green light-absorbing portion 132g and the blue light-absorbing portion 132b may be configured in a vertically stacked structure. For example, the blue light-absorbing portion 132b may be disposed on the green light-absorbing portion 132g.

[0126] Reference Figure 7 and Figure 8 Light incident through the red color filter layer 161R travels to the region of the red light-emitting element 130R and can be transmitted to the first pixel defining film 132-1 and the third pixel defining film 132-3 located at the side edges of the red light-emitting layer 133r. In this case, some of the light transmitted through the red color filter layer 161R contacts the blue light absorption portion 132b and is not reflected from it, but is transmitted and absorbed into the blue light absorption portion 132b and the green light absorption portion 132g.

[0127] Reference Figure 8 The reduced reflected light was confirmed because no peak wavelength of transmittance was observed in the red wavelength range of 580 nm to 680 nm.

[0128] Figure 9 This is a cross-sectional view of a green sub-pixel region in an organic light-emitting display device according to another embodiment of the present disclosure. Figure 10 This is a graph showing the transmittance as a function of wavelength in a pixel-defining film (magenta portion) composed of a red light-absorbing portion and a blue light-absorbing portion disposed on the green sub-pixel region side of an organic light-emitting display device according to another embodiment of the present disclosure.

[0129] Reference Figure 9 The first pixel limiting film 132-1 and the second pixel limiting film 132-2 can contact both sides of the green light emitting layer 133g located below the green color filter layer 163G in the second sub-pixel SP2.

[0130] In this respect, the portions of the first pixel defining film 132-1 and the second pixel defining film 132-2 that contact the ends of the green light-emitting layer 133g may include a red light-absorbing portion 132r and a blue light-absorbing portion 132b. The red light-absorbing portion 132r and the blue light-absorbing portion 132b may be configured in a vertically stacked structure. That is, the blue light-absorbing portion 132b may be disposed on the red light-absorbing portion 132r.

[0131] Reference Figure 9 and Figure 10 Light incident through the green filter layer 163G travels to the region of the green light-emitting element 130G and can be transmitted to the first pixel defining film 132-1 and the second pixel defining film 132-2 located at the side edges of the green light-emitting layer 133G. In this case, some of the light incident through the green filter layer 163G contacts the blue light absorption portion 132b and is not reflected from it, but is transmitted and absorbed into the blue light absorption portion 132b and the red light absorption portion 132r.

[0132] Reference Figure 10 The reduced reflected light was confirmed because no peak wavelength of transmittance was observed in the green wavelength range of 480 nm to 580 nm.

[0133] Figure 11 This is a cross-sectional view of the blue sub-pixel region in an organic light-emitting display device according to another embodiment of the present disclosure. Figure 12 This is a graph showing the transmittance of a pixel-defining film (yellow portion) composed of a red light-absorbing portion and a green light-absorbing portion in an organic light-emitting display device according to another embodiment of the present disclosure as a function of wavelength.

[0134] Reference Figure 11 The third pixel limiting film 132-3 and the second pixel limiting film 132-2 can contact both sides of the blue light emitting layer 133b located below the blue color filter layer 165B in the third sub-pixel SP3.

[0135] In this respect, the portions of the third pixel defining film 132-3 and the second pixel defining film 132-2 that contact the ends of the blue light-emitting layer 133b may include a green light-absorbing portion 132g and a red light-absorbing portion 132r. The green light-absorbing portion 132g and the red light-absorbing portion 132r may be configured in a vertically stacked structure. For example, the green light-absorbing portion 132g may be disposed on the red light-absorbing portion 132r.

[0136] Reference Figure 11 and Figure 12Light incident through the blue filter layer 165B travels to the blue light-emitting element 130B region and can be transmitted to the third pixel defining film 132-3 and the second pixel defining film 132-2 located at the side edge of the blue light-emitting layer 133b. In this case, the light incident through the blue filter layer 165B contacts the green light-absorbing portion 132g and is not reflected from it, but is transmitted and absorbed into the green light-absorbing portion 132g and the red light-absorbing portion 132r.

[0137] Reference Figure 12 The reduced reflected light was confirmed because no peak wavelength of transmittance was observed in the blue wavelength range of 380 nm to 530 nm.

[0138] Figure 13 This is a schematic plan view of a plurality of sub-pixels of an organic light-emitting display device according to another embodiment of the present disclosure. Figure 14 This is a plan view showing the first light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to another embodiment of the present disclosure. Figure 15 This is a plan view showing the first light-absorbing portion and the second light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to another embodiment of the present disclosure. Figure 16 This is a plan view showing the first light-absorbing portion, the second light-absorbing portion, and the third light-absorbing portion of the pixel-defining film in an organic light-emitting display device according to another embodiment of the present disclosure.

[0139] Reference Figures 13 to 16 An organic light-emitting display device according to another embodiment of the present disclosure may include a plurality of sub-pixels SP1, SP2 and SP3, and a first pixel defining film to a third pixel defining film 132-1, 132-2 and 132-3 disposed in the boundary region between the plurality of sub-pixels SP1, SP2 and SP3.

[0140] Multiple sub-pixels SP1, SP2 and SP3 may include a first sub-pixel SP1 arranged in a first direction (e.g., the X-axis direction), a second sub-pixel SP2 arranged adjacent to the first sub-pixel SP1 in a second direction (e.g., the Y-axis direction), and a third sub-pixel SP3 arranged adjacent to the first sub-pixel SP1 and the second sub-pixel SP2 in the first direction (e.g., the X-axis direction).

[0141] Multiple sub-pixels SP1, SP2, and SP3 form a unit pixel and can be arranged repeatedly in a first direction and a second direction. However, the arrangement structure of the multiple sub-pixels SP1, SP2, and SP3 can be changed to various forms known in the art.

[0142] In the first sub-pixel SP1, light of a first color, such as red, can be emitted; in the second sub-pixel SP2, light of a second color, such as green, can be emitted; and in the third sub-pixel SP3, light of a third color, such as blue, can be emitted.

[0143] Reference Figures 13 to 17 The first pixel defining film 132-1 may be located between the red light-emitting element 130R and the green light-emitting element 130G. The first pixel defining film 132-1 may include a second light-absorbing portion 132c and a third light-absorbing portion 132m.

[0144] The second light-absorbing part 132c is a cyan light-absorbing part, and the third light-absorbing part 132m can be a magenta light-absorbing part.

[0145] Reference Figures 13 to 17 The second pixel defining film 132-2 can be located between the green light-emitting element 130G and the blue light-emitting element 130B. The second pixel defining film 132-2 can include a first light-absorbing portion 132y and a third light-absorbing portion 132m. The first light-absorbing portion 132y can be a yellow light-absorbing portion.

[0146] Reference Figures 13 to 17 The third pixel defining film 132-3 may be located between the blue light-emitting element 130B and the red light-emitting element 130R. The third pixel defining film 132-3 may include a first light-absorbing portion 132y and a second light-absorbing portion 132c.

[0147] Each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 may include at least two light absorbing portions among the first light absorbing portion to the third light absorbing portion 132y, 132c and 132m. However, in this disclosure, each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 is not limited thereto.

[0148] The first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 are disposed in the boundary region between multiple sub-pixels SP1, SP2 and SP3 to define individual sub-pixel SP1, SP2 and SP3 regions.

[0149] Figure 17 It is along Figure 13 The cross-sectional view taken by line II-II' shows a cross-section of an organic electroluminescent display device according to another embodiment of the present disclosure.

[0150] According to another embodiment of this disclosure, the organic light-emitting display device may have the same characteristics as... Figure 5The organic light-emitting display device shown in the embodiment according to this disclosure has the same components as the one shown, except for the configuration of the pixel defining film 132.

[0151] Specifically, refer to Figure 17 An organic light-emitting display device 100 according to another embodiment of the present disclosure may include a substrate 110, a circuit element layer 200, a plurality of light-emitting elements 130, a pixel defining film 132, an encapsulation layer 140, a black matrix 150, a color filter 160, and a cover glass 170.

[0152] The circuit element layer 200 may include a passivation layer 128 and a planarization layer 129 disposed on the driving thin-film transistor. The passivation layer 128 is disposed on the source electrode 126 and the drain electrode 127, and the planarization layer 129 may be disposed on the passivation layer 128.

[0153] The passivation layer 128 and the planarization layer 129 have contact holes, and the first electrode 131 can be connected to the drain electrode 127 through the contact holes. In some cases, the first electrode 131 can be connected to the source electrode 126 through the contact holes.

[0154] In addition to driving thin-film transistors, the circuit element layer 200 may also include various signal lines (including gate lines, data lines, power lines and reference lines), various thin-film transistors (including switching thin-film transistors and sensing thin-film transistors), and capacitors.

[0155] The circuit element layer 200 may also include a passivation layer and a planarization layer disposed on the passivation layer to protect the switching thin-film transistor, the driving thin-film transistor and the sensing thin-film transistor.

[0156] Reference Figure 17 The first electrode 131 can be used as the anode of the electroluminescent display device and can be patterned on each of the plurality of sub-pixels SP1, SP2 and SP3, and can be surrounded by the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3.

[0157] The first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 are disposed in the boundary region between multiple sub-pixels SP1, SP2 and SP3 to define individual sub-pixel SP1, SP2 and SP3 regions.

[0158] A first electrode 131 can be formed on the circuit element layer 200 for each sub-pixel SP1, SP2 and SP3. The first electrode 131 can be used as the anode of the organic light-emitting display device.

[0159] When the organic light-emitting display device according to this disclosure is a bottom-emitting type, such a first electrode 131 may include a transparent electrode. When the organic light-emitting display device according to this disclosure is a top-emitting type, it may include a reflective electrode.

[0160] The pixel defining film 132 is formed at both ends of the first electrode 131 covering the circuit element layer 200, and can be formed at the boundary between multiple sub-pixels SP1, SP2 and SP3.

[0161] The pixel defining film 132 may include first pixel defining films to third pixel defining films 132-1, 132-2, and 132-3. Here, the first pixel defining films to third pixel defining films 132-1, 132-2, and 132-3 may be formed by applying yellow, cyan, and magenta color absorbing materials. However, this is not the only possibility.

[0162] The first pixel defining film 132-1 may be located between the red light-emitting element 130R and the green light-emitting element 130G. The first pixel defining film 132-1 may include a second light-absorbing portion 132c and a third light-absorbing portion 132m. The second light-absorbing portion 132c may include a cyan light-absorbing portion. The third light-absorbing portion 132m may include a magenta light-absorbing portion.

[0163] The second pixel defining film 132-2 may be located between the green light-emitting element 130G and the blue light-emitting element 130B. The second pixel defining film 132-2 may include a third light-absorbing portion 132m and a first light-absorbing portion 132y. The first light-absorbing portion 132y may include a yellow light-absorbing portion.

[0164] The third pixel defining film 132-3 may be located between the blue light-emitting element 130B and the red light-emitting element 130R. The third pixel defining film 132-3 may include a first light-absorbing portion 132y and a second light-absorbing portion 132c.

[0165] Here, each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 may include at least two of the first light absorbing portion to the third light absorbing portion 132y, 132c and 132m. However, in this disclosure, each of the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 is not limited thereto.

[0166] The first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3 are disposed in the boundary region between multiple sub-pixels SP1, SP2 and SP3 to define individual sub-pixel SP1, SP2 and SP3 regions.

[0167] A light-emitting layer 133 can be formed on the first electrode 131 located in multiple sub-pixels SP1, SP2 and SP3. The light-emitting layer 133 may include a red light-emitting layer 133r located in the first sub-pixel SP1, a green light-emitting layer 133g located in the second sub-pixel SP2, and a blue light-emitting layer 133b located in the third sub-pixel SP3.

[0168] Here, the first sub-pixel SP1 is a red sub-pixel, the second sub-pixel SP2 is a green sub-pixel, and the third sub-pixel SP3 can be a blue sub-pixel.

[0169] For each of the first to third sub-pixels SP1, SP2 and SP3, the light-emitting layer 133 is disconnected from each other through the first pixel defining film to the third pixel defining film 132-1, 132-2 and 132-3.

[0170] The light-emitting layer 133 may include a hole injection layer (HIL), a hole transport layer (HTL), a light-emitting material layer (EML), an electron transport layer (ETL), and an electron injection layer (EIL).

[0171] The light-emitting layer 133 may include a red light-emitting layer 133r, a green light-emitting layer 133g, and a blue light-emitting layer 133b. The red light-emitting layer 133r is located in the red sub-pixel SP1 region, the green light-emitting layer 133g is located in the green sub-pixel SP2 region, and the blue light-emitting layer 133b may be located in the blue sub-pixel SP3 region.

[0172] The red luminescent layer 133r can refer to the luminescent layer of an organic material that emits red light. The green luminescent layer 133g can refer to the luminescent layer of an organic material that emits green light. The blue luminescent layer 133b can refer to the luminescent layer of an organic material that emits blue light.

[0173] A second electrode 135 can be formed on the light-emitting layer 133. The second electrode 135 can be formed continuously without interruption throughout the entire internal and boundary regions of the plurality of sub-pixels SP1, SP2 and SP3.

[0174] The second electrode 135 can be used as the cathode of the electroluminescent display device. When the electroluminescent display device according to this disclosure is a top-emitting type, such a second electrode 135 can be composed of a transparent electrode or a translucent electrode. When the electroluminescent display device according to this disclosure is a bottom-emitting type, it can be composed of a reflective electrode.

[0175] An encapsulation layer 140 can be formed on the second electrode 135. The encapsulation layer 140 can be used to prevent external moisture or oxygen from penetrating into the organic light-emitting element 130.

[0176] The encapsulation layer 140 may include a first passivation layer 141, a first organic insulating layer 142, a second passivation layer 143, a lower buffer layer 144, an insulating material layer 145, and a second organic insulating layer 146. However, this application is not limited thereto.

[0177] A touch electrode 147 can be formed on the second organic insulating layer 146. The touch electrode 147 can be formed at a position overlapping with the pixel defining film 132.

[0178] A second buffer layer 148 covering the touch electrode 147 can be formed on the second organic insulating layer 146.

[0179] A black matrix 150 can be formed on the second buffer layer 148 in the region other than the sub-pixel regions SP1, SP2, and SP3. The black matrix 150 can be formed in the region between the red filter layer, the green filter layer, and the blue filter, for example, in the boundary region between multiple sub-pixels SP1, SP2, and SP3.

[0180] A color filter layer 160 can be formed between the black matrices 150, for example, on a second buffer layer 148 located in a region of multiple subpixels.

[0181] The color filter layer 160 may include a red color filter layer 161R disposed in the first sub-pixel SP1, a green color filter layer 163G disposed in the second sub-pixel SP2, and a blue color filter layer 165B disposed in the third sub-pixel SP3.

[0182] An outer coating 166 covering the color filter layer 160 can be formed on the black matrix 150. The outer coating 166 can be used to protect internal components from external impacts.

[0183] A cover glass 170 can be installed on the outer coating 166.

[0184] Therefore, in this disclosure, some of the light incident from the outside is transmitted and absorbed into the pixel defining film 132, and is not reflected to adjacent sub-pixel areas through the side edges of the yellow light absorbing portion 132y, cyan light absorbing portion 132c and magenta light absorbing portion 132m of the pixel defining film 132 located in the boundary regions of sub-pixels SP1, SP2 and SP3, thereby improving the color reproduction rate of sub-pixel areas SP1, SP2 and SP3.

[0185] Embodiments of the invention have been described in more detail with reference to the accompanying drawings, but the invention is not necessarily limited to these embodiments, and various modifications can be made within this scope without departing from the technical concept of the invention.

[0186] Therefore, the embodiments disclosed in this invention are not intended to limit the technical concept of the invention, but are merely illustrative, and the scope of the technical concept of the invention is not limited by these embodiments.

[0187] Therefore, the above embodiments should be understood as illustrative rather than restrictive in all respects.

[0188] The scope of protection of this invention shall be interpreted by the claims, and all technical concepts within the equivalent scope shall be interpreted as being included within the scope of the claims of this invention.

Claims

1. An organic light-emitting display device, comprising: substrate; A circuit element layer disposed on the substrate; Multiple pixel-defining films are disposed on the circuit element layer; Multiple light-emitting elements are disposed between the multiple pixel defining films and have a first electrode, a light-emitting layer and a second electrode; An encapsulation layer is disposed on the second electrode of the plurality of light-emitting elements; A black matrix, disposed on the encapsulation layer and overlapping the pixel defining film; and Multiple color filter layers are arranged between the black matrix. The plurality of pixel-defining films include a plurality of light-absorbing portions.

2. The organic light-emitting display device according to claim 1, wherein, The plurality of light-absorbing portions includes at least two light-absorbing portions of different colors.

3. The organic light-emitting display device according to claim 2, wherein, Each of the plurality of pixel-defining films includes a first light-absorbing portion, a second light-absorbing portion, and a third light-absorbing portion of different colors.

4. The organic light-emitting display device according to claim 3, wherein, Each of the first to the third light absorption portions includes one of a red light absorption portion, a green light absorption portion, and a blue light absorption portion.

5. The organic light-emitting display device according to claim 1, wherein, Each of the plurality of pixel-defining films includes a first light-absorbing portion and a second light-absorbing portion of different colors, and The first light absorption portion and the second light absorption portion each include one of a yellow light absorption portion, a cyan light absorption portion, and a magenta light absorption portion.

6. The organic light-emitting display device according to claim 2, wherein, One of the plurality of pixel-defining films includes a first light-absorbing portion, and a second light-absorbing portion and a third light-absorbing portion stacked on the first light-absorbing portion.

7. The organic light-emitting display device according to claim 6, wherein, The first light-absorbing portion includes a red light-absorbing portion, and the second light-absorbing portion and the third light-absorbing portion each include one of a green light-absorbing portion and a blue light-absorbing portion.

8. The organic light-emitting display device according to claim 1, wherein, One of the plurality of pixel-defining films includes a first light-absorbing portion, a second light-absorbing portion, and a third light-absorbing portion disposed on the first light-absorbing portion and the second light-absorbing portion.

9. The organic light-emitting display device according to claim 8, wherein, The first light-absorbing portion is a light-absorbing portion of a first color, the second light-absorbing portion is a light-absorbing portion of a second color, and the third light-absorbing portion is a light-absorbing portion of a third color.

10. The organic light-emitting display device according to claim 9, wherein, The first color and the second color are one of red and green, respectively, and the third color is blue.

11. The organic light-emitting display device according to any one of claims 1 to 10, wherein, The encapsulation layer includes multiple passivation layers, planarization layers, multiple insulating layers, and multiple buffer layers.

12. The organic light-emitting display device according to any one of claims 1 to 10, further comprising: An outer coating and a cover glass are disposed on the color filter layer.

13. The organic light-emitting display device according to claim 1, wherein, The plurality of pixel-defining films are formed to cover both ends of the first electrode and are formed at the boundaries between the plurality of sub-pixels included in the organic light-emitting display device.

14. The organic light-emitting display device according to claim 7 or 10, wherein, The plurality of light-emitting elements includes red light-emitting elements, green light-emitting elements, and blue light-emitting elements. In this configuration, the red light-emitting element is spaced apart from the red light-absorbing portion, and at least one of the green and blue light-absorbing portions is located between them. In this configuration, the green light-emitting element is spaced apart from the green light-absorbing portion, and at least one of the red and blue light-absorbing portions is located between them. The blue light-emitting element is spaced apart from the blue light-absorbing portion, and at least one of the red light-absorbing portion and the green light-absorbing portion is located between them.

15. The organic light-emitting display device according to claim 5, wherein, The plurality of light-emitting elements include a red light-emitting element, a green light-emitting element, and a blue light-emitting element. The red light-emitting element is adjacent to the cyan light-absorbing portion, the green light-emitting element is adjacent to the magenta light-absorbing portion, and the blue light-emitting element is adjacent to the yellow light-absorbing portion.

16. An organic light-emitting display device, comprising: A substrate having multiple sub-pixel regions; Multiple light-emitting elements are disposed on the substrate and respectively located in the multiple sub-pixel regions; as well as A plurality of pixel-defining films configured such that the plurality of light-emitting elements are separated from each other. The plurality of pixel-defining films include multiple light-absorbing portions of different colors.

17. The organic light-emitting display device according to claim 16, wherein, Each of the plurality of pixel-defining films includes a first light-absorbing portion, a second light-absorbing portion, and a third light-absorbing portion.

18. The organic light-emitting display device according to claim 17, wherein, Each of the first to the third light absorption portions includes one of a red light absorption portion, a green light absorption portion, and a blue light absorption portion.

19. The organic light-emitting display device according to claim 16, wherein, Each of the plurality of pixel-defining films includes a first light-absorbing portion and a second light-absorbing portion of different colors, and The first light absorption portion and the second light absorption portion each include one of the yellow light absorption portion, the cyan light absorption portion, and the magenta light absorption portion.

20. The organic light-emitting display device according to claim 16, wherein, One of the plurality of pixel-defining films includes a first light-absorbing portion, and a second light-absorbing portion and a third light-absorbing portion stacked on the first light-absorbing portion.

21. The organic light-emitting display device according to claim 20, wherein, The first light-absorbing portion includes a red light-absorbing portion, and The second light absorption portion and the third light absorption portion each include one of a green light absorption portion and a blue light absorption portion.

22. The organic light-emitting display device according to claim 16, wherein, One of the plurality of pixel-defining films includes a first light-absorbing portion, a second light-absorbing portion, and a third light-absorbing portion disposed on the first light-absorbing portion and the second light-absorbing portion.

23. The organic light-emitting display device according to claim 22, wherein, The first light-absorbing portion is a light-absorbing portion of a first color, the second light-absorbing portion is a light-absorbing portion of a second color, and the third light-absorbing portion is a light-absorbing portion of a third color.

24. The organic light-emitting display device according to claim 23, wherein, The first color and the second color are one of red and green, respectively, and the third color is blue.

Images