Light-emitting display device

Abstract

Disclosed is a light emitting display device including: a substrate including a red sub-pixel, a green sub-pixel, and a blue sub-pixel each having a light emitting portion and a non-light emitting portion; a bank at non-emission portions of the red sub-pixel, the green sub-pixel, and the blue sub-pixel; a light emitting element at each of the red sub-pixel, the green sub-pixel, and the blue sub-pixel; an encapsulation layer covering the light emitting element; a color filter on the encapsulation layer and overlapping the light emitting portion; and a reflective layer between the bank and the color filter and overlapping at least the bank.

Description

Technical Field

[0001] This disclosure relates to display devices, and more specifically, for example, but not limited to, a light-emitting display device that has an improved balance between initial image quality and lifetime relative to changes over time in a structure employing an anti-reflective structure including a light-shielding layer and a color filter instead of a polarizer. Background Technology

[0002] With the development of the information society, the demand for display devices used to display images is increasing in various forms.

[0003] Light-emitting display devices with pixels that include light-emitting elements do not require a separate light source unit, thus offering advantages in terms of thinness or flexibility, and good color purity.

[0004] For example, a light-emitting element includes two different electrodes and a light-emitting layer between the electrodes. When electrons generated from one electrode and holes generated from the other electrode are injected into the light-emitting layer, the injected electrons and holes recombine to generate excitons. When the generated excitons fall from the excited state to the ground state, light is emitted.

[0005] The descriptions provided in this Background section should not be assumed to be prior art simply because they are mentioned in or associated with this section. The Background section may include information describing one or more aspects of the subject matter art. Summary of the Invention

[0006] Therefore, this disclosure aims to provide a light-emitting display device that substantially avoids one or more problems caused by the limitations and disadvantages of related technologies.

[0007] One aspect of this disclosure is to provide a light-emitting display device that prevents external light reflection without using a polarizer that reduces light transmittance, while simultaneously improving the initial image quality.

[0008] Another aspect of this disclosure is to provide a light-emitting display device in which the lifetime characteristics of red sub-pixels, green sub-pixels and blue sub-pixels are similar or uniform.

[0009] Another aspect of this disclosure is to provide a light-emitting display device that prevents the visibility of a specific color from being prominent not only at the initial stage of operation but also after a certain period of operation.

[0010] Additional advantages, aspects, and features of this disclosure will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon reviewing the following, or may be learned from practice of this disclosure. Various aspects and other advantages of this disclosure may be realized and obtained by means of the structures particularly pointed out in the written description and claims, and in the accompanying drawings.

[0011] To achieve these and other objectives and in accordance with the purposes of this disclosure, as implemented and broadly described herein, a light-emitting display device may include: a substrate comprising red subpixels, green subpixels, and blue subpixels, each having a light-emitting portion and a non-light-emitting portion; a dam at the non-light-emitting portion of the red subpixels, green subpixels, and blue subpixels; a light-emitting element at each of the red subpixels, green subpixels, and blue subpixels; an encapsulation layer covering the light-emitting element; a color filter located on the encapsulation layer and overlapping the light-emitting portion; and a reflective layer located between the dam and the color filter and at least overlapping the dam.

[0012] In another aspect of this disclosure, a light-emitting display device may include: a substrate including a first sub-pixel, a second sub-pixel, and a third sub-pixel, each having a light-emitting portion and a non-light-emitting portion; a dam disposed at the non-light-emitting portion of the first to third sub-pixels; a light-emitting element disposed at each of the first to third sub-pixels; an encapsulation layer covering the light-emitting element; a color filter located on the encapsulation layer and overlapping with the light-emitting portion; and a reflective layer located between the dam and the color filter and reflecting external light passing through the color filter toward the color filter.

[0013] In another aspect of this disclosure, a light-emitting display device may include: a substrate including a first sub-pixel, a second sub-pixel, and a third sub-pixel, each having a light-emitting portion and a non-light-emitting portion; a light-emitting element disposed at each of the first to third sub-pixels; a color filter located above the light-emitting element and configured to overlap with the light-emitting portions of the first to third sub-pixels; and a reflective layer disposed within the non-light-emitting portions of the first to third sub-pixels and having an opening exposing the light-emitting portions of the first to third sub-pixels.

[0014] According to an exemplary embodiment of this disclosure, the light-emitting display device can prevent external light reflection without using a polarizer that reduces light transmittance, while simultaneously improving the initial image quality.

[0015] According to an exemplary embodiment of this disclosure, the light-emitting display device can make the lifetime characteristics of the red sub-pixels, green sub-pixels and blue sub-pixels uniform.

[0016] According to an exemplary embodiment of this disclosure, the light-emitting display device is able to prevent the visibility of a particular color from being prominent not only at the initial stage of operation but also after a certain period of operation.

[0017] It should be understood that both the foregoing general description and the following detailed description are exemplary and explanatory, and are intended to provide further explanation of the claimed disclosure. Attached Figure Description

[0018] The accompanying drawings are included to provide a further understanding of this disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the disclosure and, together with the description, serve to explain the various principles of the disclosure. In the drawings:

[0019] Figure 1 This is a schematic plan view of a light-emitting display device according to one embodiment of the present disclosure;

[0020] Figure 2 This is a plan view showing the arrangement of sub-pixels of a light-emitting display device according to an exemplary embodiment of the present disclosure;

[0021] Figure 3 This is a plan view showing the arrangement of sub-pixels of a light-emitting display device according to another exemplary embodiment of the present disclosure;

[0022] Figures 4 to 6 The light-emitting display device according to various exemplary embodiments of the present disclosure is along Figure 2 A cross-sectional view taken from line I-I';

[0023] Figure 7 This is a coordinate system that illustrates the external light reflection visibility of a light-emitting display device according to an exemplary embodiment of the present disclosure and a light-emitting display device according to a comparative example;

[0024] Figure 8 This is a diagram illustrating a light-emitting display device according to another exemplary embodiment of the present disclosure; and

[0025] Figure 9 This is a diagram illustrating a light-emitting display device according to yet another embodiment of the present disclosure.

[0026] Throughout the accompanying drawings and detailed description, unless otherwise described, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustrative purposes, the relative dimensions and illustrations of these elements may be exaggerated. Detailed Implementation

[0027] In the following description, exemplary embodiments of the present disclosure will be illustrated with reference to the accompanying drawings. Exemplary embodiments of the present disclosure will now be described in detail, examples of which are shown in the drawings. Wherever possible, unless otherwise specified, the same reference numerals will be used throughout the drawings to refer to the same or similar parts. The described progression of processing steps and / or operations is exemplary; however, the order of steps and / or operations is not limited to the order set forth herein and can be varied as is known in the art, except for steps and / or operations that need to occur in a particular order. Similar reference numerals refer to similar elements throughout. The names of corresponding elements used in the following description may be chosen solely for ease of writing and therefore may differ from the names used in actual products.

[0028] The advantages and features of this disclosure, as well as the methods for achieving these advantages and features, will be apparent from the accompanying document and appendix. Figure 1 The exemplary embodiments described in detail below will become apparent. This disclosure should not be construed as limited to the exemplary embodiments disclosed below, and may be implemented in various different forms. Therefore, these exemplary embodiments are only set forth to make this disclosure sufficiently complete and to help those skilled in the art to fully understand the scope of this disclosure. The scope of protection of this disclosure is defined by the claims and their equivalents.

[0029] In the following description of this disclosure, detailed descriptions of relevant known steps, components, functions, techniques, and configurations may be omitted where such descriptions might unnecessarily obscure the essential points of this disclosure. Furthermore, the component names used in the following description have been chosen for clarity of description and may differ from component names in actual products. Additionally, numerous specific details are set forth in the following detailed description of this disclosure to provide a sufficiently thorough understanding of the disclosure. However, it will be understood that this disclosure can be practiced without these specific details. In other instances, known methods, processes, components, and circuits have not been described in detail to avoid unnecessarily obscuring aspects of this disclosure.

[0030] The shapes, dimensions, ratios, angles, quantities, etc., shown in the accompanying drawings to describe various exemplary embodiments of this disclosure are given by way of example only. This disclosure is not limited to the illustrations in the drawings. Any implementation described herein as "exemplary" is not necessarily to be construed as more preferred or advantageous than other implementations.

[0031] In this specification, when terms such as “including,” “having,” “comprising,” etc., are used, one or more components may be added unless a more restrictive term such as “only” is used. As used herein, the term “and / or” includes a single related listed item as well as any and all combinations of two or more related listed items.

[0032] When an expression such as "at least one" precedes a list of elements, it may modify the entire list of elements, rather than individual elements within the list. The term "at least one" should be understood to include any and all combinations of one or more related listed items. For example, "at least one of the first, second, and third elements" means a combination of all three listed elements, a combination of any two of the three elements, and each individual element, the first, second, and third elements.

[0033] The terminology used herein is for describing specific aspects and is not intended to limit this disclosure. As used herein, the terms "a" and "an" used to describe elements in the singular are intended to include multiple elements. Unless the context clearly indicates otherwise, elements described in the singular are intended to include multiple elements, and vice versa.

[0034] When interpreting components or values, even if no explicit description of such error or tolerance range is provided, the component or value should be interpreted as including the error or tolerance range.

[0035] In describing the various exemplary embodiments of this disclosure, when using terms such as “on,” “above,” “below,” and “adjacent to” to describe the positional relationship between two elements, at least one intermediate element may exist between the two elements unless more restrictive terms such as “immediately,” “directly,” or “closely” are used. It will be understood that when an element or layer is referred to as being “connected to” or “attached to” another element or layer, it may be directly connected to or attached to the other element or layer, or one or more intermediate elements or layers may exist. Furthermore, the terms “left,” “right,” “top,” “bottom,” “down,” “up,” “upper,” “lower,” etc., refer to any frame of reference.

[0036] In describing various exemplary embodiments of this disclosure, when using terms such as “after,” “next,” “next,” and “before” to describe the temporal relationship between two events, another event may occur in between, unless more restrictive terms such as “only,” “immediately,” or “directly” are used.

[0037] In describing the various exemplary embodiments of this disclosure, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used to describe various components. These terms are intended to distinguish identical or similar components from one another, without limiting the nature, order, sequence, or number of the components. Therefore, throughout the specification, unless otherwise specifically mentioned, a "first" component may be the same as a "second" component within the technical concept of this disclosure.

[0038] Features of the various embodiments of this disclosure may be partially or wholly linked or combined with each other, and may interoperate with each other and be technically driven in various ways, as will be fully understood by those skilled in the art. Embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent manner.

[0039] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which the exemplary embodiments pertain. It will also be understood that terms such as those defined in common dictionaries shall be interpreted as having a meaning consistent with, for example, their meaning in the context of the relevant field, and shall not be interpreted as having an overly idealized or overly formal meaning, unless expressly defined herein. For example, the terms “component” or “unit” may be applied, for example, to a single circuit or structure, an integrated circuit, a computational block of a circuit arrangement, or any structure configured to perform the described functions, as would be understood by one of ordinary skill in the art.

[0040] As used herein, the term "doped" layer refers to a layer comprising a first material and a second material having physical properties different from the first material (e.g., n-type and p-type materials, or organic and inorganic substances). Besides differences in properties, the first and second materials may also differ in their amounts within the doped layer. For example, the host material may be the dominant component, while the dopant material may be a minor component. The first material constitutes the majority of the weight of the doped layer. The second material may be added in an amount less than 30% by weight based on the total weight of the first material in the doped layer. A "doped" layer can be a layer in which the host material and dopant material of a given layer are distinguished by weight ratios. For example, if all the materials constituting a layer are organic, and at least one of the materials constituting the layer is n-type and another is p-type, the layer is considered a "doped" layer if the amount of the n-type material is less than 30% by weight, or if the amount of the p-type material is less than 30% by weight.

[0041] Furthermore, the term "undoped" refers to a layer that has not been "doped." For example, a layer can be considered "undoped" when it contains a single material or a mixture of materials that have the same properties as each other. For example, a layer is considered "undoped" if at least one of the materials constituting it is p-type and no n-type material is present. Similarly, a layer is considered "undoped" if at least one of the materials constituting it is organic and no inorganic material is present.

[0042] In this disclosure, an electroluminescence (EL) spectrum can be calculated by multiplying (a) a photoluminescence (PL) spectrum by (b) an external coupling or emission spectrum, where (a) the photoluminescence (PL) spectrum applies the inherent properties of the light-emitting material, such as a dopant material or a host material, included in the organic light-emitting layer, and (b) the external coupling or emission spectrum is determined by the structure and optical properties of the organic light-emitting element, including the thickness of an organic layer, such as an electron transport layer.

[0043] In the following, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. When adding reference numerals to elements in each drawing, the same reference numerals may refer to the same elements even if the same elements are shown in other drawings. Furthermore, for ease of description, the scale of each element shown in the drawings differs from the actual scale; therefore, the elements shown are not limited to their specific scale shown in the figures.

[0044] Figure 1 This is a block diagram schematically illustrating an example embodiment of a light-emitting display device according to the present disclosure.

[0045] like Figure 1 As shown, a light-emitting display device 1000 according to one embodiment of the present disclosure may include a display panel 11 and one or more of an image processor 12, a timing controller 13, a data driver 14, a scan driver 15, and a power supply 16.

[0046] Display panel 11 can display images in response to data signals DATA provided from data driver 14, scan signals provided from scan driver 15, and power provided from power supply 16.

[0047] The display panel 11 may include sub-pixels SP disposed at each intersection of multiple gate lines GL and multiple data lines DL. The structure of the sub-pixels SP may vary depending on the type of the light-emitting display device 1000.

[0048] For example, subpixels (SPs) can be structurally configured as top-emitting, bottom-emitting, or double-sided emitting. A subpixel (SP) refers to a unit that can emit a specific color with or without a color filter. For example, a subpixel (SP) may include red, green, and blue subpixels. Alternatively, a subpixel (SP) may include, for example, red, blue, white, and green subpixels. A subpixel (SP) can have one or more different emitting regions depending on its emitting characteristics. For example, subpixels emitting different colors may have different emitting regions.

[0049] One or more subpixels SP can constitute a unit pixel. For example, a unit pixel may include red subpixels, green subpixels, and blue subpixels, and the red, green, and blue subpixels may be arranged repeatedly. Alternatively, a unit pixel may include red, green, blue, and white subpixels, and the red, green, blue, and white subpixels may be arranged in a repeating manner, or the red, green, blue, and white subpixels may be arranged in a quaternary type. In one embodiment of this disclosure, the color type, arrangement type, arrangement order, etc., of the subpixel SP can be configured in various forms according to light-emitting characteristics, element lifetime, device specifications, etc., and are not limited thereto.

[0050] The display panel 11 can be divided into a display area AA (the area within the dashed lines) in which subpixels SP are arranged to display images, and a non-display area NA adjacent to (e.g., surrounding) the display area AA. A scan driver 15 can be installed in the non-display area NA of the display panel 11. Furthermore, the non-display area NA may include a pad portion PAD containing pad electrodes PD.

[0051] Here, the display area AA can be referred to as the active area AA, and the non-display area NA can be referred to as the inactive area NA.

[0052] In addition to the data signal DATA provided from the outside, the image processor 12 can also output a data enable signal DE, etc. Besides the data enable signal DE, the image processor 12 can output one or more of a vertical synchronization signal, a horizontal synchronization signal, and a clock signal, but for the sake of illustration, these drive signals are omitted.

[0053] In addition to receiving drive signals from the image processor 12, the timing controller 13 can also receive data signals DATA from the image processor 12. Drive signals may include a data enable signal DE. Alternatively, drive signals may include a vertical synchronization signal, a horizontal synchronization signal, and a clock signal. The timing controller 13 can output a data timing control signal DDC for controlling the operating timing of the data driver 14 and a gating timing control signal GDC for controlling the operating timing of the scan driver 15, based on the drive signals.

[0054] The data driver 14 can sample and latch the data signal DATA provided by the timing controller 13 in response to the data timing control signal DDC provided by the timing controller 13, convert the sampled and latched data signal into a gamma reference voltage, and output the gamma reference voltage.

[0055] The data driver 14 can output a data signal DATA via the data line DL. The data driver 14 can be implemented as an integrated circuit (IC). For example, the data driver 14 can be electrically connected via a flexible circuit layer (not shown) to a pad electrode PD disposed in the non-display area NA of the display panel 11.

[0056] The scan driver 15 can output a scan signal in response to a gating timing control signal GDC provided from the timing controller 13. The scan driver 15 can output the scan signal via a gating line GL. The scan driver 15 can be implemented as an integrated circuit (IC) or as a gating in panel (GIP) in the display panel 11, but this disclosure is not limited thereto.

[0057] Power supply 16 can output high-potential voltage and low-potential voltage for driving display panel 11. Power supply 16 can provide high-potential voltage to display panel 11 through first power line EVDD (drive power line or pixel power line) and can provide low-potential voltage to display panel 11 through second power line EVSS (auxiliary power line or common power line).

[0058] The display panel 11 can be divided into a display area AA and a non-display area NA, and can include a plurality of sub-pixels SP defined by gating lines GL and data lines DL that intersect each other in a matrix within the display area AA.

[0059] Subpixels SP may include subpixels that emit light of at least two or more colors selected from red, green, blue, yellow, magenta, and cyan. Furthermore, multiple subpixels SP may have specific types of color filters formed on them, or may emit specific colors of light without color filters. However, this disclosure is not limited to this, and the color type, arrangement type, arrangement order, etc., of the subpixel SPs can be configured in various forms according to light-emitting characteristics, element lifetime, device specifications, etc.

[0060] Each subpixel SP may include a light-emitting portion and a non-light-emitting portion surrounding the light-emitting portion.

[0061] In the following description, by way of example only, with reference to the accompanying drawings, an embodiment of a light-emitting display device according to the present disclosure is described, which includes light-emitting elements emitting light-emitting layers of corresponding colors applied to each of red sub-pixels, green sub-pixels, and blue sub-pixels, and the present disclosure is not limited thereto.

[0062] Figure 2 This is a plan view showing the arrangement of sub-pixels of a light-emitting display device according to an exemplary embodiment (which may be a first embodiment) of the present disclosure. Figure 3This is a plan view showing the arrangement of sub-pixels of a light-emitting display device according to another exemplary embodiment (which may be a second embodiment) of the present disclosure. Figures 4 to 6 The light-emitting display device according to various embodiments of the present disclosure is along Figure 2 The cross-sectional view taken from line I-I'. Figure 7 This is a coordinate system that illustrates the external light reflection visibility of a light-emitting display device according to one embodiment of the present disclosure and a light-emitting display device according to a comparative example.

[0063] Figure 2 and Figure 3 The arrangement of the reflective layer 160 and color filters 152: 152a, 152b and 152c according to an embodiment of the present disclosure is shown, and Figures 4 to 6 Cross-sectional configurations of light-emitting display devices according to various embodiments of the present disclosure are shown.

[0064] First, refer to Figure 2 and Figure 4 The present disclosure will describe a light-emitting display device according to one embodiment.

[0065] like Figure 2 and Figure 4 As shown, the light-emitting display device 1000 according to the first embodiment of the present disclosure includes: a substrate 100, which includes a red sub-pixel RSP, a green sub-pixel GSP, and a blue sub-pixel BSP, each having a light-emitting portion REM, GEM, or BEM and a non-light-emitting portion NEM; a dam 128 disposed in the non-light-emitting portion NEM of the red sub-pixel RSP, the green sub-pixel GSP, and the blue sub-pixel BSP; a light-emitting element ED disposed in each of the red sub-pixel RSP, the green sub-pixel GSP, and the blue sub-pixel BSP; an encapsulation layer 140 covering the light-emitting element ED; an anti-reflective structure RPL located on the encapsulation layer 140; and a reflective layer 160 located between the upper surface of the dam 128 and the anti-reflective structure RPL and configured to overlap with the dam 128.

[0066] The anti-reflective structure RPL is used to prevent external light entering from the outside of the anti-reflective structure RPL from entering the light-emitting element ED and being reflected by the electrodes of the light-emitting element ED and thus detected.

[0067] The anti-reflective structure RPL is located on the side of the encapsulation layer 140 closest to the side where external light is incident. The anti-reflective structure RPL includes a light-shielding layer 151 overlapping with the non-light-emitting portion NEM, and color filters 152: 152a, 152b and 152c located on the encapsulation layer 140 and overlapping with the light-emitting portions REM, GEM and BEM.

[0068] Furthermore, the anti-reflective structure RPL can further include a dummy red filter RD, thereby increasing the reflection efficiency of external light with red wavelengths not only in the non-emitting portions of the red sub-pixels but also in the non-emitting portions of other sub-pixels, and increasing the amount of red light passing through these portions. For example, as Figure 4 As shown, the dummy red filter RD can be disposed in the non-emitting portion (NEM) of the red sub-pixel RSP, the green sub-pixel GSP, and the blue sub-pixel BSP, and therefore can overlap with the embankment 128 or the reflective layer 160. In the red sub-pixel RSP, the dummy red filter RD and the red filter 152a can be integrated with each other.

[0069] The anti-reflective structure RPL can utilize the absorption characteristics of the light-shielding layer 151 across the entire visible spectrum.

[0070] Color filters 152: 152a, 152b, and 152c, as well as the dummy red color filter RD, utilize selective transmittance of light at specific wavelengths. Color filters 152: 152a, 152b, and 152c, which correspond at least to the light-emitting portions REM, GEM, and BEM, can absorb light in a wavelength range other than the selected wavelength, and also enable the emission of light of the selected wavelength from the light-emitting element ED disposed in each sub-pixel.

[0071] Specifically, the light-shielding layer 151 is located in the non-light-emitting portion (NEM) and can function to absorb light in the direction of light travel. The light-shielding layer 151 may include black particles in the binder and / or solvent and is configured to correspond to the non-light-emitting portion (NEM). The black particles may include organic black materials, metal oxides, etc. Organic black materials may include, for example, carbon black, lactam black, or perylene black. Metal oxides may include, for example, TiNxOy or CuMnFeOx. The thickness of the light-shielding layer 151 can be adjusted according to the size of the black particles included in the light-shielding layer 151. The light-shielding layer 151 may be disposed at the boundary between the red filter 152a, green filter 152b, and blue filter 152c corresponding to the respective sub-pixels.

[0072] according to Figure 2 The light-emitting display device 1000 of the embodiment shows an example in which red filter 152a, green filter 152b and blue filter 152c are arranged in a strip shape, but this disclosure is not limited thereto.

[0073] Red filter 152a and dummy red filter RD can transmit light with wavelengths from 600 nm to 650 nm, green filter 152b can transmit light with wavelengths from 510 nm to 590 nm, and blue filter 152c can transmit light with wavelengths from 430 nm to 495 nm, but this disclosure is not limited thereto.

[0074] Here, the red filter 152a can extend laterally to have a width longer than the entire width of the red sub-pixel RSP. In this case, the red filter 152a can contact the blue filter 152c and the green filter 152b on both sides. The red filter 152a can overlap the entire area of ​​the non-light-emitting portion NEM disposed in the display area AA of the light-emitting display device 1000 with a width greater than that of the green filter 152b and the blue filter 152c.

[0075] The dummy red filter RD can be formed of the same material as the red filter 152a and can have the same red light transmittance. Furthermore, as... Figure 2 As shown, the dummy red filter RD can be set to be spaced apart from the red filter 152a.

[0076] The reflective layer 160 is positioned to overlap with the dummy red filter RD and the red filter 152a located in the non-luminescent portion NEM.

[0077] The reflective layer 160 includes a reflective electrode. The reflective layer 160 can be formed as a multilayer structure, such as a stack of aluminum (Al) and titanium (Ti) (Ti / Al / Ti), a stack of aluminum (Al) and ITO (ITO / Al / ITO), an APC alloy (Ag / Pd / Cu), a stack of APC alloy and ITO (ITO / APC / ITO), or a stack of silver (Ag) and molybdenum / titanium alloy (Ag / MoTi). Alternatively, it may include a single-layer structure formed from one of the following materials: silver (Ag), aluminum (Al), molybdenum (Mo), gold (Au), magnesium (Mg), calcium (Ca), and barium (Ba), or an alloy of two or more of these materials. Due to its own structure (and independent of the electrical operation of the light-emitting element ED), the reflective layer 160 has the function of improving the visibility of reflected red external light by overlapping with the red filter 152a or the dummy red filter RD. The reflective layer 160 is electrically isolated from the first electrode 122 and the second electrode 126 of the light-emitting element ED, and is not affected by the electrical operation of the light-emitting element ED.

[0078] Specifically, in a light-emitting display device 1000 according to one embodiment of the present disclosure, such as Figure 2As shown, a red filter 152a is integrally disposed in the light-emitting portion REM and the non-light-emitting portion NEM of the red sub-pixel RSP. In the green sub-pixel GSP and the blue sub-pixel BSP, green filters 152b and blue filters 152c can be disposed at least in the light-emitting portions GEM and BEM, respectively, and extend partially from at least the light-emitting portions GEM and BEM to the non-light-emitting portion NEM. Here, green filters 152b and blue filters 152c can be spaced apart from each other, and a dummy red filter RD can be placed in the region between green filters 152b and blue filters 152c. Furthermore, blue filters 152c can be spaced apart from adjacent sub-pixels, and red filters 152a or dummy red filters RD can be disposed in the region where blue filters 152c are spaced apart from adjacent sub-pixels.

[0079] In addition, such as Figure 2 As shown, the reflective layer 160 may include a shape surrounding the red emitting portion REM and a shape parallel to at least one side of each of the green emitting portion GEM and the blue emitting portion BEM.

[0080] In the presence of external light, red light passing through the red filter 152a and the dummy red filter RD in the non-light-emitting part NEM is reflected upward from the reflective layer 160, which overlaps with the red filter 152a and the dummy red filter RD, thereby adjusting the initial visibility of the light-emitting display device 1000.

[0081] Even if the light-emitting display device 1000 exhibits a cyan-biased color in a configuration, for example, below the anti-reflective structure RPL, the light-emitting display device 1000 according to one embodiment of the present disclosure also employs a cyan complementary color reflectivity structure through the extension of the red filter 152a of the anti-reflective structure RPL and the overlap between the dummy red filter RD and the reflective layer 160. Therefore, when light is finally emitted after passing through the anti-reflective structure RPL, a decrease in the visibility of the observed specific color is prevented. For example, an initial black state can be achieved as a clear black, and when driving a color including white, the corresponding color can be achieved without bias towards a specific color. Therefore, the light-emitting display device 1000 can achieve high contrast.

[0082] According to one embodiment of the present disclosure, the light-emitting display device 1000 achieves color deficiency not by controlling the area of ​​the light-emitting portion, but by additionally controlling the extension of the red filter, the dummy red filter, and the reflective layer of the external light anti-reflection structure. If the initial color defect is solved by increasing the area of ​​the light-emitting portion of a specific color sub-pixel, the lifetime of the sub-pixel with the increased color light-emitting portion increases, thereby losing the lifetime balance of the red, green, and blue sub-pixels. By extending the red filter above the external light reflective layer and adding the dummy red filter and the reflective layer overlapping the red filter and the dummy red filter, the external light reflection efficiency is increased without adjusting the area of ​​the light-emitting portion. Therefore, according to one embodiment of the present disclosure, the light-emitting display device 1000 compensates for the initial color deficiency. Thus, according to one embodiment of the present disclosure, the light-emitting display device 1000 can maintain a balance of red, green, and blue, and can uniformly maintain color temperature characteristics even over time.

[0083] Light-emitting display devices have been developed while considering both ease of use and light transmittance. Since these devices include metal electrodes in their light-emitting elements, methods such as attaching polarizers have been considered to prevent external light reflection caused by the metal electrodes. However, polarizers significantly limit the amount of light emitted; therefore, research is underway to find methods that omit polarizers. Furthermore, to achieve thinner and more flexible devices, and to facilitate their application in displays, light-emitting display devices are being developed that incorporate color filter arrays for color reproduction into the encapsulation layer without the use of additional encapsulation substrates or opposing substrates.

[0084] Light-emitting display devices employing polarizers exhibit good performance in preventing external light reflection between regions, even in environments with strong external light, due to the inherent light absorption characteristics of the polarizers themselves. However, they also have relatively low luminous efficiency. Furthermore, since the polarizer, as an optical layer, needs to be attached to the outside of the light-emitting display device, the increased thickness makes it difficult to achieve a thinner and lighter device, and the attachment of the polarizer also increases the number of processes involved.

[0085] The light-emitting display device of this disclosure is a polarizer-free structure and has an anti-reflective structure for preventing the reflection of external light. The anti-reflective structure includes a light-shielding layer and a color filter for performing color display, and is used for performing color reproduction and preventing external light from being detected.

[0086] exist Figure 2 or Figure 3 For simplicity, the light-shielding layer 151 overlapping with the color filter 152 is not shown. Figure 4As shown, the light-shielding layer 151 of the anti-reflective structure RPL can be configured to overlap with the boundary between sub-pixels. In some cases, the light-shielding layer 151 can be omitted. Referring to the configuration of the light-emitting element ED located below the anti-reflective structure RPL, as shown... Figure 4 As shown, the dam 128 opens to the light-emitting portions REM, GEM, and BEM, and is disposed within the non-light-emitting portion NEM. If the dam 128 comprises a black material, a light-blocking effect can be obtained through the dam 128. Furthermore, when light is emitted from the light-emitting element ED, even if some light is emitted diagonally, the dam 128 can absorb the light and prevent color mixing between adjacent sub-pixels.

[0087] For example, such as Figure 4 As shown, in a light-emitting display device 1000B according to one embodiment of the present disclosure, the light-shielding layer 151 may overlap with at least one color filter 152: 152a, 152b or 152c.

[0088] The light-shielding layer 151 not only blocks external light, but also absorbs light that propagates diagonally rather than in a straight line from the light emitted from the light-emitting portions REM, GEM and BEM in the emission direction, thereby preventing light propagating diagonally from the light-emitting element ED from passing through the non-light-emitting portions REM, GEM and BEM and entering adjacent sub-pixels.

[0089] The color filter 152 may include a red color filter 152a that overlaps with the light-emitting portion REM of the red sub-pixel and the non-light-emitting portion NEM of the red sub-pixel, a green color filter 152b that overlaps with the light-emitting portion GEM of the green sub-pixel GSP, and a blue color filter 152c that overlaps with the light-emitting portion BEM of the blue sub-pixel BSP.

[0090] Furthermore, the color filters 152: 152a, 152b, and 152c included in the anti-reflective structure RPL are located in the corresponding sub-pixels RSP, GSP, and BSP. The color filters 152: 152a, 152b, and 152c can absorb wavelengths of incident light from the outside that are not selectively transmitted by the respective color filters 152a, 152b, and 152c. For example, the red color filter 152a can transmit red light in the optical path and absorb green and blue light, which are other wavelengths of light. The green color filter 152b can transmit green light in the optical path and absorb red and blue light, which are other wavelengths of light. The blue color filter 152c can transmit blue light in the optical path and absorb red and green light, which are other wavelengths of light.

[0091] Each of color filters 152: 152a, 152b, and 152c may include a colored pigment with its own wavelength selectivity. The colored pigment may be mixed with a solvent and applied to a corresponding one of the red sub-pixel RSP, green sub-pixel GSP, and blue sub-pixel BSP. The solvent may evaporate to leave the corresponding color filter 152: 152a, 152b, or 152c with the colored pigment component. The color filters 152: 152a, 152b, and 152c may then be patterned for each sub-pixel RSP, GSP, or BSP.

[0092] Color filters 152: 152a, 152b, and 152c can selectively transmit light wavelengths not only in the direction of external light incidence but also in the direction of light emission from the light-emitting element ED. For example, color filters 152: 152a, 152b, or 152c transmit the emitted light containing the color to be expressed in the corresponding sub-pixel but absorb wavelengths of other colors. For example, in the red sub-pixel RSP, the red color filter 152a transmits red light emitted from the light-emitting element ED and emits the red light outwards, while absorbing wavelengths of green and blue light. Similarly, in the green sub-pixel GSP, the green color filter 152b transmits green light from the light-emitting element ED and emits the green light outwards, while absorbing wavelengths of red and blue light. Furthermore, in the blue sub-pixel BSP, the blue color filter 152c transmits blue light from the light-emitting element ED and emits the blue light outwards, while absorbing wavelengths of green and red light.

[0093] Here, color filter 152 includes a red filter 152a, a green filter 152b, and a blue filter 152c corresponding to the red sub-pixel RSP, the green sub-pixel GSP, and the blue sub-pixel BSP, respectively. The red filter 152a, green filter 152b, and blue filter 152c can overlap with the embankment 128 located in the non-light-emitting portion NEM, and among the filters 152a, 152b, and 152c, the area of ​​overlap between the red filter 152a and the embankment 128 can be the largest. This is because, as... Figure 2 and Figure 6 As shown, the red filter 152a extends outward from the red emitting portion REM and is configured to extend further outward than the boundary between the red sub-pixel RSP and the green sub-pixel GSP or the blue sub-pixel BSP. For example, the red filter 152a is configured to cross the boundary with adjacent sub-pixels. Therefore, according to... Figure 2 and Figure 4The light-emitting display device of the embodiment can increase the transmittance of red light from the top external light by extending the red color filter 152a outside the red light-emitting portion REM, and the red external light entering the red color filter 152a can be reflected and re-emitted by the surface of the reflective layer 160, thereby improving the visibility of red reflection.

[0094] The light-emitting display device of the present disclosure can improve light transmittance by using color filters 152: 152a, 152b and 152c involved in color display and a light-shielding layer 151 as an anti-reflection structure RPL without a polarizer that reduces light transmittance.

[0095] Figure 4 It shows having Figure 2 An example of a planar light-emitting display device 1000B, wherein the reflective layer 160 is formed to directly contact the lower surface of the extension of the red filter 152a located in the non-light-emitting portion NEM or the lower surface of the dummy red filter RD.

[0096] Furthermore, the arrangement in which the reflective layer 160 overlaps with the extension of the red filter 152a is not limited to... Figure 4 Examples. In another implementation, such as Figure 5 In this configuration, the reflective layer 260 may be located in direct contact with the encapsulation layer 140. Alternatively, in another embodiment, such as... Figure 6 In this case, the reflective layer 360 can be located in direct contact with the upper surface of the embankment 128.

[0097] For example, such as Figure 2 as well as Figures 4 to 6 As shown, the light-emitting display device according to one embodiment of the present disclosure may have a reflective layer 160, 260 or 360 between the upper surface of the embankment 128 and the color filters 152: 152a, 152b and 152c, and the red color filter 152a extends to overlap with the reflective layer 160, 260 or 360, thereby increasing the reflection efficiency of some wavelengths of light in the external light in the area where the red color filter 152a overlaps with the reflective layer 160, 260 or 360.

[0098] The embodiments according to this disclosure will be described. Figures 4 to 6 The common configuration of light-emitting display devices in the system.

[0099] The substrate 100 on which the corresponding sub-pixels RSP, GSP and BSP are formed can be formed as a single layer or multiple layers.

[0100] The substrate 100 may include at least one of a glass substrate, a plastic layer, or a metal plate having a constant supporting force. The substrate 100 may be formed of a flexible material. For example, when the substrate 100 is formed as a multilayer, it may have a stacked structure of a first organic layer, an inorganic insulating layer, and a second organic layer. The outermost first organic layer can prevent the introduction of external impurities and has a protective function. The second organic layer can planarize the surface on which the internal array structure is formed and can prevent charge transfer or impurity transfer from the outside to the inside of the substrate 100. The inorganic insulating layer between the first and second organic layers can prevent moisture diffusion between the first and second organic layers and prevent conductive impurities from transferring to the second organic layer.

[0101] A first insulating layer 101 may be disposed on a substrate 100. The first insulating layer 101 may serve as a buffer layer or an active buffer layer. Buffer layers and active buffer layers may be used to prevent impurities from being transferred upwards from the underlying wiring to the active layer 112 included in the internal array, and to support and protect the components on the first insulating layer 101. The first insulating layer 101 may include multiple layers.

[0102] A thin-film transistor (TFT) and a storage capacitor can be provided for each of the sub-pixels RSP, GSP, and BSP on the first insulating layer 101.

[0103] The light-blocking layer 111 can be disposed on the first insulating layer 101 to prevent light from being transmitted from below to the active layer 112 of the thin-film transistor TFT.

[0104] The second insulating layer 102 for insulation can be disposed between the light-blocking layer 111 and the active layer 112.

[0105] The thin-film transistor (TFT) can be disposed on each of a plurality of sub-pixels on the second insulating layer 102. For example, the TFT may include an active layer 112, a gate electrode 113 overlapping the active layer 112 by a third insulating layer 103 interposed therebetween, and a first source / drain electrode 114 and a second source / drain electrode 115 connected to both sides of the active layer 112.

[0106] As an example, the storage capacitor may include a first storage electrode and a second storage electrode that overlap each other. At least one of the first storage electrode or the second storage electrode may include the same material as the active layer 112, and the other may include the same material as at least one of the gate electrode 113, the first source / drain electrode 114 and the second source / drain electrode 115 or the light-blocking layer 111.

[0107] The third insulating layer 103 between the active layer 112 and the gate electrode 113 can be used as a gate insulating layer.

[0108] The active layer 112 may include, for example, a silicon-based semiconductor or an oxide semiconductor. The silicon-based semiconductor may include crystalline silicon and / or amorphous silicon. The oxide semiconductor may include at least one of gallium oxide, tin oxide, zinc oxide, indium oxide, iron oxide, or indium gallium zinc oxide. In some cases, the oxide semiconductor layer may be formed as multiple layers with different materials or different material composition ratios. Each sub-pixel may include multiple thin-film transistors, and the thin-film transistors may be located on different layers. For example, each sub-pixel of the substrate 100 may include multiple thin-film transistors with different active layers. For example, a first thin-film transistor may have a silicon-based active layer (e.g., a low-temperature polycrystalline silicon active layer) and be disposed closer to the substrate 100, and a second thin-film transistor may have an oxide semiconductor-based active layer and be disposed on a layer above the first thin-film transistor.

[0109] The active layer 112 may include a channel region overlapping with the gate electrode 113 and source / drain regions respectively connected to the first source / drain electrode 114 and the second source / drain electrode 115.

[0110] The third insulating layer 103 can be selectively configured to correspond to the channel region of the active layer 112, or it can be disposed on the entire surface of the substrate 100 except for the regions penetrated by the first source / drain electrode 114 and the second source / drain electrode 115. The third insulating layer 103 can perform the function of insulating between the active layer 112 and the gate electrode 113. The third insulating layer 103 can be formed of an inorganic insulating material and can include, for example, a silicon oxide (SiOx) layer, a silicon nitride (SiNx) layer, a silicon oxynitride (SiOxNy) layer, or a multilayer structure thereof.

[0111] The gate electrode 113 may be formed on the third insulating layer 103. The gate electrode 113 may be configured to face the active layer 112 and with the third insulating layer 103 interposed therebetween.

[0112] A fourth insulating layer 104 may be formed on the gate electrode 113 to cover and protect the gate electrode 113. Furthermore, the fourth insulating layer 104 may function to protect at least one electrode of the thin-film transistor TFT (e.g., the gate electrode 113 and the active layer 112). The fourth insulating layer 104 may be formed of an inorganic insulating material. For example, the fourth insulating layer 104 may include, for example, a silicon oxide (SiOx) layer, a silicon nitride (SiNx) layer, a silicon oxynitride (SiOxNy) layer, or a multilayer structure thereof.

[0113] The first source / drain electrode 114 and the second source / drain electrode 115 can be disposed on the fourth insulating layer 104. The fourth insulating layer 104 and the third insulating layer 103 are provided with contact holes by removing corresponding areas, so that the first source / drain electrode 114 and the second source / drain electrode 115 are in contact with the two ends of the active layer 112, respectively.

[0114] Each of the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed as a single layer or multiple layers.

[0115] When the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 are formed as a single layer, they can be formed from a material selected from the group consisting of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys. Furthermore, when the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 are formed as a multilayer, they can be formed as a bilayer structure of molybdenum / aluminum-neodymium, molybdenum / aluminum, titanium / aluminum, or copper / molybdenum-titanium. Alternatively, the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed as a trilayer structure of molybdenum / aluminum-neodymium / molybdenum, molybdenum / aluminum / molybdenum, titanium / aluminum / titanium, or molybdenum-titanium / copper / molybdenum-titanium.

[0116] However, the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 are not limited thereto, and the gate electrode 113, the first source / drain electrode 114, and the second source / drain electrode 115 can be formed as a multilayer structure made of a material selected from the group consisting of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and alloys thereof.

[0117] Each of the first to fourth insulating layers 101, 102, 103, and 104 may be formed of an inorganic insulating layer. The inorganic insulating layer may be at least one of, for example, a silicon oxide layer, a silicon nitride layer, or a silicon oxynitride layer.

[0118] A first planarization layer 105 and a second planarization layer 106 may be disposed on the first to fourth insulating layers 101, 102, 103, and 104. The first planarization layer 105 may have contact holes, and a connection electrode 116 connected to the second source / drain electrode 115 may be disposed within the contact holes. The second planarization layer 106 is configured to cover the connection electrode 116 and the first planarization layer 105. Each of the first planarization layer 105 and the second planarization layer 106 may each comprise an organic material. The organic material may include one or more of the following: acrylic resin, phenolic resin, polyimide resin, unsaturated polyester resin, polyamide resin, benzocyclobutene, polystyrene resin, and polyphenylene sulfide resin.

[0119] The connecting electrode 116 can be formed as a multilayer, for example, from a material selected from the group consisting of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), and their alloys. However, embodiments of this disclosure are not limited thereto. In some cases, the connecting electrode 116 can be omitted. If the connecting electrode 116 is omitted, one of the first source / drain electrode 114 and the second source / drain electrode 115 can be directly connected to the first electrode 122 of the light-emitting element ED.

[0120] A light-emitting element ED is formed by stacking a first electrode 122, an intermediate layer EL, and a second electrode 126.

[0121] The first electrode 122 can be used as an anode. The first electrode 122 can pass through the second planarization layer 106 and the first planarization layer 105 and be connected to the transistor TFT. The example shown illustrates a case where a connecting electrode 116 is also provided between the first electrode 122 and the transistor TFT, the transistor TFT is connected to the connecting electrode 116, and the connecting electrode 116 is connected to the first electrode 122. However, the second source / drain electrode 115 of the transistor TFT and the first electrode 122 of the light-emitting element ED can be directly connected without the connecting electrode 116.

[0122] The first electrode 122 may comprise a metallic material with high reflectivity. For example, the first electrode 122 may be formed as a multilayer structure, such as a stacked structure of aluminum (Al) and titanium (Ti) (Ti / Al / Ti), a stacked structure of aluminum (Al) and ITO (ITO / Al / ITO), an Ag / Pd / Cu (APC) alloy, a stacked structure of APC alloy and ITO (ITO / APC / ITO), or a stacked structure of silver (Ag) and molybdenum / titanium alloy (Ag / MoTi). Alternatively, it may comprise a single-layer structure formed from one material selected from silver (Ag), aluminum (Al), molybdenum (Mo), gold (Au), magnesium (Mg), calcium (Ca), and barium (Ba), or an alloy of two or more materials selected therefrom. The first electrode 122 may be referred to as a reflective electrode.

[0123] An intermediate layer EL is disposed on the first electrode 122. The intermediate layer EL may include a first common layer CML1 associated with holes (such as a hole injection layer or a hole transport layer), an organic light-emitting layer EML, and a second common layer CML2 associated with electrons (such as an electron transport layer or an electron injection layer). Figures 4 to 6 As shown, the organic light-emitting layer (EML) can include a red light-emitting layer (REML) in the red sub-pixel (RSP), a green light-emitting layer (GEML) in the green sub-pixel (GSP), and a blue light-emitting layer (BEML) in the blue sub-pixel (BSP). For example, as... Figures 4 to 6As shown, the red emitting layer REML can be patterned in the red sub-pixel RSP, the green emitting layer GEML can be patterned in the green sub-pixel GSP, and the blue emitting layer BEML can be patterned in the blue sub-pixel BSP. However, this arrangement is only an example. An intermediate layer EL, provided as a red stack REL, a green stack GEL, or a blue stack BEL, can be disposed in one of the corresponding sub-pixels RSP, GSP, and BSP. The emitting element ED of each sub-pixel RSP, GSP, or BSP can have multiple stacks formed as intermediate layers EL by stacking a first common layer CML1, the corresponding colored emitting layers REML, GEML, or BEML, and a second common layer CML2 between the first electrode 122 and the second electrode 126, and a charge generation layer can be included between adjacent stacks. In some cases, the intermediate layer EL can be disposed in the corresponding sub-pixels RSP, GSP, and BSP in the same series structure including multiple stacks. The series structure includes a charge generation layer between the multiple stacks, and each stack can include one or more emitting layers. When the intermediate layer EL has the same structure for the corresponding sub-pixels RSP, GSP and BSP, the light-emitting element ED can emit white light, and each of the red filter 152a, green filter 152b and blue filter 152c of the anti-reflective structure RPL can selectively emit light of the color corresponding to each sub-pixel.

[0124] The edge of the first electrode 122 of each sub-pixel RSP, GSP, or BSP may overlap with the embankment 128. The area of ​​the first electrode 122 exposed from the embankment 128 may define a light-emitting portion REM, GEM, or BEM. The embankment 128 provides an opening for the light-emitting portion REM, GEM, or BEM of each sub-pixel RSP, GSP, or BSP. The embankment 128 may comprise an organic or inorganic insulating material.

[0125] When a voltage is applied to the first electrode 122 and the second electrode 126, holes and electrons move to the organic light-emitting layer through the hole injection layer and the hole transport layer, and the electron injection layer and the electron transport layer, respectively. Holes and electrons recombine with each other in the organic light-emitting layer to form excitons, and the excitons fall from the excited state to the ground state, thereby emitting light.

[0126] Multiple layers or at least one layer included in the intermediate layer EL (REL, GEL or BEL) can be set together in the entire display area AA.

[0127] The second electrode 126 can be a common layer that is shared and applies the same voltage to the sub-pixels SP. Therefore, the second electrode 126 can be configured as a portion extending from the display area AA to the non-display area NA.

[0128] The second electrode 126 can be a transmission electrode. The second electrode 126 may include a transparent metallic material (e.g., a transparent conductive material (TCO)) (such as indium tin oxide (ITO) or indium zinc oxide (IZO) that is transparent to light), or a semi-transparent metallic material (e.g., a semi-transparent conductive material) (such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag)). When the second electrode 126 includes a semi-transparent conductive material, the luminous efficiency can be increased by the microcavity. When the second electrode 126 includes a semi-transparent conductive material, the thickness of the second electrode 126 can be thin enough to allow light transmission.

[0129] The first electrode 122 may include a reflective electrode to prevent light generated in the intermediate layer EL from being transmitted to a light-shielding component below the first electrode 122. Light generated from the intermediate layer EL resonates between the second electrode 126 and the first electrode 122, and can ultimately be emitted upward through the second electrode 126. Because the first electrode 122 includes a reflective component, even if the first electrode 122 overlaps with wiring and transistor TFTs, light emitted from the light-emitting element ED can be identified in the REM, GEM, and BEM of the light-emitting portion, regardless of the arrangement between the first electrode 122 and the wiring and transistor TFTs.

[0130] The light-emitting display device of the present disclosure is implemented as a top-emitting type that emits light upwards. In this case, the first electrode 122 includes a reflective electrode, and the light generated from the intermediate layer EL resonates through reflection and re-reflection between the first electrode 122 and the second electrode 126, and is ultimately emitted toward the second electrode 126.

[0131] An encapsulation layer 140 protecting the light-emitting element ED may be further disposed on the second electrode 126. The encapsulation layer 140 may be a single layer or multiple layers. If the encapsulation layer 140 is formed as a multiple layer, it may be formed by stacking at least one inorganic encapsulation layer and at least one organic encapsulation layer. The inorganic encapsulation layer prevents moisture penetration, and the organic encapsulation layer may cover particles and perform the function of planarizing the surface. In a planar plane, the organic encapsulation layer may be located inside the inorganic encapsulation layer. In this case, the inorganic encapsulation layer prevents moisture penetration through the sides.

[0132] A protective layer 146 may be disposed on the encapsulation layer 140. The protective layer 146 may perform the function of planarizing the surface on which the anti-reflective structure RPL is formed. The protective layer 146 may be a transparent organic layer.

[0133] In some cases, the protective layer 146 can be omitted, and the light-shielding layer 151, color filters 152: 152a, 152b and 152c, and the dummy red color filter RD can be directly disposed on the encapsulation layer 140.

[0134] In addition, a touch sensor can be provided instead of the protective layer 146. The touch sensor may include a touch buffer layer, a bridging layer, a touch insulating layer, a touch sensor layer, and a touch protective layer, and the light-shielding layer 151 and color filters 152: 152a, 152b, and 152c and a dummy red color filter RD can be disposed on the uppermost touch protective layer of the touch sensor. When the touch sensor is disposed between the encapsulation layer 140 and the light-shielding layer 151 and the color filters 152, at least one of the electrodes within the touch sensor (e.g., the bridging layer and the touch sensor layer) can be used as a reference for... Figure 5 The reflective layer 260 of the implementation method.

[0135] according to Figure 2 The light-emitting display device 1000 according to the first embodiment of this disclosure has a structure in which a red filter 152a and a dummy red filter RD are separated. Furthermore, a reflective layer 160 is provided to overlap with the separated red filter 152a and the dummy red filter RD. The red filter 152a and the reflective layer 160 overlap in the non-light-emitting portion NEM outside the light-emitting portion REM of the red sub-pixel RSP. Red light in the incident external light passes through the red filter 152a and is reflected by the reflective layer 160, thereby increasing the reflectivity of red external light. Similarly, the overlapping structure of the dummy red filter RD and the reflective layer 160 can increase the reflectivity of red external light reflected around the green filter 152b and the blue filter 152c.

[0136] A cover layer 170 is disposed on an anti-reflective structure RPL including a light-shielding layer 151, a color filter 152, and a dummy red color filter RD to protect the components disposed beneath the cover layer 170 from external moisture or physical irritants. It should be noted that... Figures 4 to 6 The cross-sectional structure of the display device shown is provided by way of example only, and the display device may have various other structures. Therefore, one or more layers or components of the display device, as well as the relative arrangement of the components or layers, can be changed in various ways as needed.

[0137] Furthermore, although the light-emitting display device is shown by way of example as an organic light-emitting display device, this disclosure is not limited thereto, and other types of light-emitting display devices such as micro-light-emitting diode (Micro-LED) display devices or quantum dot light-emitting display devices are also possible.

[0138] Figure 7 Comparative example EX1 indicates a structure in which red, green, and blue color filters are arranged to have similar areas without a reflective layer and without a dummy red color filter. Figure 7 Experimental example EX2 indicates a structure in which, with Figure 2 Similarly, the red filter extends to the adjacent non-emitting portion and is provided with a dummy red filter RD and a reflective layer 160.

[0139] Therefore, in the light-emitting display device of Comparative Example EX1, where the red, green, and blue filters are arranged in a structure with similar areas in the non-light-emitting portion (NEM) to display an initial black with a cyan tint, the light-emitting display device according to an embodiment of the present disclosure EX2 can achieve an initial black without a specific color bias by increasing the reflection efficiency of light in the red direction, which is optically complementary to cyan. Furthermore, in the light-emitting display device where the red, green, and blue filters are arranged in a structure with similar areas in the non-light-emitting portion to display a white with a cyan tint, the light-emitting display device according to an embodiment of the present disclosure can increase the purity of white when driven to achieve white by increasing the reflection efficiency of red, which is optically complementary to cyan. Therefore, the light-emitting display device according to an embodiment of the present disclosure can improve the color temperature of white during driving. Furthermore, according to one embodiment of the present disclosure, the light-emitting display device can improve the initial hue or achieve the hue when white without changing the area of ​​the light-emitting portion by overlapping the red filter 152a or the dummy red filter RD in the non-light-emitting portion with the reflective layer 160. This prevents the degradation of the lifetime balance among the red, green, and blue sub-pixels due to changes in the area of ​​the light-emitting portion. Although the light-emitting display device of Comparative Example EX1 describes an initial black that displays a cyan (blue-tinged) hue, the present disclosure is not limited to this. Therefore, the light-emitting display device of the present disclosure can adaptively adjust to compensate for color shifts or deviations by increasing the reflectivity of any one of the red, green, and blue components.

[0140] according to Figure 3In the second embodiment of this disclosure shown, the light-emitting display device 1000A has a structure in which a red filter 152a extends to the non-light-emitting portion NEM of the green sub-pixel GSP and the blue sub-pixel BSP, and is connected to a dummy red filter RD. Furthermore, a reflective layer 160 is continuously formed in the sub-pixels RSP, GSP, and BSP according to the connection shape of the red filter 152a and the dummy red filter RD. In the sub-pixels RSP, GSP, and BSP, the reflective layer 160 has a shape surrounding each light-emitting portion REM, GEM, or BEM, and can be continuously formed in adjacent sub-pixels. For example, in this case, the reflective layer 160 can be integrally disposed on the substrate 100 and has an opening shape for the corresponding light-emitting portion REM, GEM, and BEM. Here, the size of the opening of the reflective layer 160 corresponding to the red light-emitting portion REM can be smaller than the size of the opening corresponding to the green light-emitting portion GEM and the blue light-emitting portion BEM. The reason for this is to prevent the reflective layer 160 from overlapping with the green filter 152b and blue filter 152c located in the non-emitting portion NEM, because the green filter 152b and blue filter 152c are disposed in the green emitting portion GEM and the blue emitting portion BEM, and also extend from the outer line of the respective emitting portion to a part of the respective non-emitting portion NEM, so as to achieve sufficient color reproduction in the respective emitting portion. Here, each of the green filter 152b disposed in the green sub-pixel GSP and the blue filter 152c disposed in the blue sub-pixel BSP can be island-shaped. A dummy red filter RD is disposed between the green filter 152b and the blue filter 152c spaced apart from each other.

[0141] The red filter 152a and the dummy red filter RD can be formed from the same material.

[0142] and Figure 2 Compared to the structure, Figure 3 The light-emitting display device 1000A according to the second embodiment shown has an increased overlap area between the reflective layer 160 and the red filter 152a and the dummy red filter RD, thereby further increasing the red reflection efficiency against external light and more effectively preventing the appearance of a bluish shift in the initial black or white state.

[0143] Figure 3 The light-emitting display device 1000A according to the second embodiment shown above is the same as the one described above. Figure 2 The difference in the illustrated embodiment of the light-emitting display device 1000 is that the red filter 152a disposed in the non-light-emitting portion NEM of the red sub-pixel RSP and the dummy red filter RD disposed in the non-light-emitting portion NEM of the green sub-pixel GSP and the blue sub-pixel BSP extend and are connected to each other.

[0144] In this case, the reflective layer 160 of the light-emitting display device 1000A according to the second embodiment can have a shape that is continuously formed throughout the entire display area AA. Furthermore, the openings in the reflective layer 160 expose at least the light-emitting portions REM, GEM, and BEM. The light-emitting display device 1000A according to the second embodiment can be configured such that most of the non-light-emitting portion NEM is used as an area to improve external light reflection efficiency, thereby achieving a more superior effect in increasing red reflection efficiency than in the first embodiment.

[0145] Figures 4 to 6 The light-emitting display devices illustrating various embodiments of the present disclosure have vertical position differences in the reflective layer.

[0146] also, Figures 4 to 6 The light-emitting display devices 1000B, 1000C, and 1000D shown according to the embodiments can follow... Figure 2 or Figure 3 The red filter 152a, green filter 152b, and blue filter 152c are used, and the planar positional relationship between the red filter RD and the reflective layer 160 is assumed.

[0147] When the light-emitting element ED disposed in each sub-pixel has a stacked configuration of a first electrode 122, an intermediate layer EL, and a second electrode 126, the intermediate layer EL may be located on a dam 128 on which a reflective layer 160 is formed.

[0148] like Figure 4 As shown, the light-emitting display device 1000B according to one embodiment of the present disclosure may have a reflective layer 160 disposed below the red filter 152a and the dummy red filter RD. In this case, the reflective layer 160 may be configured to contact the lower surfaces of the red filter 152a and the dummy red filter RD.

[0149] like Figure 5 As shown, a light-emitting display device 1000C according to one embodiment of the present disclosure may have a reflective layer 260 disposed on the encapsulation layer 140. In this case, the reflective layer 260 may be located on the uppermost surface of the encapsulation layer 140. However, the light-emitting display device 1000C according to one embodiment of the present disclosure is not limited thereto. For example, when the encapsulation layer 140 is formed as multiple layers, the reflective layer 260 may be located on any one of the multiple layers.

[0150] In addition, such as Figure 6 As shown, a light-emitting display device 1000D according to one embodiment of the present disclosure may have a reflective layer 360 disposed on the uppermost surface of the embankment 128. In this case, the uppermost surface of the embankment 128 and the lower surface of the reflective layer 360 can be in direct contact. Figure 6In one embodiment, the reflective layer 360 can be formed immediately after the formation of the embankment 128.

[0151] When the light-emitting element ED disposed in each sub-pixel has a stacked configuration of a first electrode 122, an intermediate layer EL, and a second electrode 126, the intermediate layer EL may be located on the upper part of the embankment 128 on which the reflective layer 160 is formed.

[0152] In an anti-reflective structure that includes a color filter and a light-shielding layer, similar to a light-emitting display device using a polarizer, a structure with a light-emitting portion of the corresponding sub-pixel and a color filter that overlaps with the non-light-emitting portion of the corresponding sub-pixel with the same width has good transmittance, but when representing white, a hue shift towards cyan may be observed.

[0153] The light-emitting display device according to the embodiments of the present disclosure aims to ensure transmittance compared with a light-emitting display device employing a polarizer, while obtaining an initial stable black visibility effect that can be obtained by a light-emitting display device employing a polarizer, and to obtain a lifetime balance among red sub-pixels, green sub-pixels and blue sub-pixels even over time.

[0154] To improve the red hue, one approach is to increase the size of the luminous portion of the red subpixel. However, in this case, there is a lifetime difference between the luminous portion of the increased subpixel and the luminous portion of the normal-sized subpixel, and the balance of white expression deteriorates over time, thus the color temperature tends to decrease.

[0155] The light-emitting display device disclosed herein does not add a light-emitting portion to the red sub-pixel. Instead, it adds an extension of the red filter 152a or a dummy red filter RD to the area on the substrate that is used as a non-light-emitting portion, and provides a reflective layer 160 that overlaps with the extension of the red filter 152a or the dummy red filter RD, so that the red light in the external light is reflected again, thereby increasing the hue of the red external light in the initial state or when white is achieved, and shifting the hue that changes towards cyan back to the initial black state or the white state when driven.

[0156] exist Figure 2 or Figure 3 In the light-emitting display device, the corresponding light-emitting portions of the red, green, and blue sub-pixels are illustrated as having the same size. However, the light-emitting display device according to embodiments of the present disclosure is not limited thereto. The size of the corresponding light-emitting portions of the red, green, and blue sub-pixels can be adjusted by considering the efficiency of the light-emitting element disposed in each sub-pixel and its ratio to white.

[0157] As an example of different sizes of the light-emitting portions of red, green, and blue subpixels, if the efficiency of the light-emitting element in producing blue light is lower than that in producing red and green light, the light-emitting portion of the blue subpixel can be set to be larger than the light-emitting portions of the red and green subpixels. Furthermore, if green contributes more to light emission when representing white light, the area of ​​the light-emitting portion of the green subpixel can be set to be larger than the area of ​​the light-emitting portion of the red subpixel. Here, in the light-emitting display device according to the embodiments of this disclosure, even if the area of ​​the light-emitting portion REM of the red subpixel RSP is set to be larger than the areas of the light-emitting portions GEM and BEM of the green subpixel GSP and blue subpixel BSP, the overlap area of ​​the red filter 152a with the reflective layer 160 in the non-light-emitting portion NEM can be larger than the overlap area of ​​the green filter 152b and blue filter 152c with the reflective layer 160, and red light from external light entering from the outside is allowed to be incident and reflected upwards by the reflective layer 160, thereby increasing the amount of red reflection.

[0158] The reflective layer 160 may be located at least below the red filter 152a, such that external light incident from the outside passes through the red filter 152a and then strikes the reflective layer 160. The reflective layer 160 may include, for example, a reflective metal. When external light passes through the red filter 152a and enters the reflective layer 160, the red light passing through the red filter 152a is reflected from the upper surface of the reflective layer 160 and emitted again to the outside.

[0159] In the light-emitting display device according to the embodiments of the present disclosure, the overlap area of ​​the reflective layer 160 with the red filter 152a that overlaps with the non-light-emitting portion NEM can be greater than the overlap area with the green filter 152b and the blue filter 152c, so that external light with a red wavelength transmitted from above the outside of the light-emitting display device through the red filter 152a can be reflected upward by the reflective layer 160.

[0160] In addition, such as Figures 2 to 6 As shown, the light-emitting display device according to embodiments of the present disclosure may further include a dummy red filter RD in at least one of the non-light-emitting portion NEM of the green sub-pixel GSP or the blue sub-pixel BSP, in addition to the red filter 152a extending to the non-light-emitting portion NEM of the red sub-pixel RSP. Furthermore, the dummy red filter RD overlaps with the reflective layer 160, such that external light with a red wavelength transmitted from above through the dummy red filter RD can be reflected upwards by the reflective layer 160.

[0161] Furthermore, the above embodiments are designed to address the shift towards cyan in structures where red, green, and blue color filters overlap adjacent non-light-emitting portions with similar areas, either in an initial black state or when driven to achieve white. However, the light-emitting display device of the present disclosure is not limited to this. When light from a configuration below the anti-reflective structure is biased towards a specific color in the initial state, a dummy color filter complementary to that color can be configured to overlap with the reflective layer. When the reflective layer has a vertical position between the color filter and the upper surface of the embankment, the reflective visibility of the wavelength of light transmitted by the dummy color filter can be improved due to the reflection of external light by the reflective layer.

[0162] Figures 2 to 6 An example of a light-emitting display device in which sub-pixels are arranged in the form of RGB stripes has been described.

[0163] In another embodiment, an example of describing the subpixels arranged in the form of RGBG will be given.

[0164] Figure 8 This is a diagram illustrating a light-emitting display device according to another embodiment (e.g., a third embodiment) of the present disclosure.

[0165] like Figure 8 As shown, the light-emitting display device according to the third embodiment of this disclosure has a red light-emitting portion REM and a green light-emitting portion GEM arranged in a first row, and a green light-emitting portion GEM and a blue light-emitting portion BEM arranged in a second row in a unit pixel PU. Such a unit pixel has a display area AA (see...) Figure 1 Repeated arrangement in ).

[0166] An example is shown in which the green luminescent portion (GEM) that contributes significantly to brightness when representing white is arranged with a relatively large area.

[0167] An example of a light-emitting display device according to a third embodiment of the present disclosure shows a reflective layer 460 arranged in the form of surrounding a red light-emitting portion REM.

[0168] In this configuration, the red filter 152a is arranged to extend to overlap not only with the red emitting portion REM, but also with the entire area in which the reflective layer 460 is formed. In this configuration, the red filter 152a may overlap with the embankment 128. Figure 8 It shows the relationship with Figure 6 The example described above illustrates an embodiment where the reflective layer 460 is located on the upper surface of the embankment 128, but the embodiments disclosed herein are not limited thereto. For example, the reflective layer 460 may be as follows: Figure 5 It can be disposed on the encapsulation layer 140, or on the lower surface of the red color filter 152a.

[0169] like Figure 8 As shown, light LI incident from the outside through the red filter 152a is reflected from the upper surface of the reflective layer 460, thus the reflected light LR, which is red light, is emitted. Furthermore, of the light LI incident through the red filter 152a, light heading towards the upper surface of the first electrode 122 is reflected by the reflective layer 460, thus the reflected light LR, which is red light, is emitted through the red filter 152a. Here, when light LI incident from the outside passes through the red filter 152a, the red filter 152a absorbs light of colors other than red light and transmits only red light. Therefore, referring to… Figure 8 It can be confirmed that the light-emitting display device according to the third embodiment of this disclosure improves the reflection efficiency of red light in external light.

[0170] Figure 9 This is a diagram illustrating a light-emitting display device according to yet another embodiment (e.g., a fourth embodiment) of the present disclosure.

[0171] Figure 9 The arrangement of the light-emitting portions REM, GEM, and BEM of the light-emitting display device according to the fourth embodiment of this disclosure is the same as that of the third embodiment described above.

[0172] Unlike the third embodiment, in the fourth embodiment, the reflective layer 560 is continuously formed in the non-light-emitting portion other than the light-emitting portions REM, GEM and BEM. Figure 9 The cross-sectional view shown illustrates an example where the reflective layer 560 is located on the upper surface of the embankment 128, but embodiments of this disclosure are not limited thereto. Figure 4 Similarly, the reflective layer 560 can be located anywhere in the vertical space between the upper surface of the embankment 128 and the red filter 152a or the dummy red filter RD.

[0173] The dam 128 can be configured such that the side surface between the upper and lower surfaces of the dam 128 is inclined at an acute angle to the lower surface of the dam 128. In this case, the width or diameter of the upper surface of the dam 128 can be smaller than the width or diameter of the lower surface of the dam 128. Therefore, when the reflective layer 560 is configured to contact the upper surface of the dam 128, the area in which the reflective layer 560 is formed may be relatively small. However, the reflective layer 560 can be located in the encapsulation layer 140 (see...). Figure 4 ) or protective layer 146 (see Figure 5 This is done on top of the reflective layer 560 so that the width or diameter of the reflective layer 560 can be increased.

[0174] Furthermore, in the fourth embodiment, the red filter 152a located in the non-light-emitting portion NEM outside the red light-emitting portion REM can be connected to the dummy red filter RD located in the non-light-emitting portion NEM outside the green light-emitting portion GEM and the blue light-emitting portion BEM.

[0175] like Figure 9 As shown, light LI incident from the outside through the red filter 152a is reflected from the upper surface of the reflective layer 560, thus emitting reflected light LR, which is red light. Furthermore, of the light LI incident through the red filter 152a, light heading towards the upper surface of the first electrode 122 is reflected by the reflective layer 560, thus emitting reflected light LR, which is red light, through the red filter 152a. Here, when light LI incident from the outside passes through the red filter 152a, the red filter 152a absorbs light of colors other than red light and transmits only red light. Therefore, referring to… Figure 9 It can be confirmed that the light-emitting display device according to the fourth embodiment of this disclosure improves the reflection efficiency of red light in external light.

[0176] It is evident from the above description that the light-emitting display device disclosed herein has the following effects.

[0177] According to one embodiment of the present disclosure, the light-emitting display device may have an anti-reflective structure including a color filter that participates in color display and a light-shielding layer, thereby enabling improved light transmittance without using a polarizer.

[0178] According to one embodiment of the present disclosure, a light-emitting display device may provide a reflective layer between the upper surface of the embankment and a color filter, and extend the color filter to overlap with the reflective layer, thereby increasing the reflection efficiency of light with a specific wavelength range in the area where the color filter and the reflective layer overlap.

[0179] According to one embodiment of the present disclosure, a light-emitting display device can achieve a clear color even when the light emitted below the anti-reflective structure is biased towards a specific color. This is achieved by using a complementary color reflectivity structure through the overlapping of the reflective layer and the color filter, thereby enabling clear colors during final emission without any decrease in visibility that would otherwise be perceived as a specific color. For example, an initial black state can be achieved as a clear black, and when the light-emitting display device is driven to display colors including white, the corresponding colors can be achieved without bias towards a specific color. Therefore, high contrast can be obtained.

[0180] According to one embodiment of the present disclosure, the light-emitting display device can control visibility adjustment by controlling the color filter and reflective layer of the anti-reflective structure without adjusting the area of ​​the light-emitting portion. This prevents the decline in the lifetime balance of red, green, and blue sub-pixels when the area of ​​the light-emitting portion of a specific color is increased, and maintains the color temperature characteristics.

[0181] A light-emitting display device according to one embodiment of the present disclosure may include: a substrate including a red sub-pixel, a green sub-pixel, and a blue sub-pixel, each having a light-emitting portion and a non-light-emitting portion; a dam at the non-light-emitting portion of the red sub-pixel, the green sub-pixel, and the blue sub-pixel; a light-emitting element at each of the red sub-pixel, the green sub-pixel, and the blue sub-pixel; an encapsulation layer covering the light-emitting element; a color filter located on the encapsulation layer and overlapping the light-emitting portions of the red sub-pixel, the green sub-pixel, and the blue sub-pixel; and a reflective layer located between the dam and the color filter and at least overlapping the dam.

[0182] In a light-emitting display device according to one embodiment of the present disclosure, the color filter may include a red color filter overlapping with the light-emitting portion of a red sub-pixel, a green color filter overlapping with the light-emitting portion of a green sub-pixel, and a blue color filter overlapping with the light-emitting portion of a blue sub-pixel. The red color filter may have an extension of a non-light-emitting portion extending beyond the light-emitting portion of the red sub-pixel, and the extension of the red color filter is configured to cross the boundary between the red sub-pixel and the adjacent green or blue sub-pixel.

[0183] In a light-emitting display device according to one embodiment of the present disclosure, the color filter may include a red color filter, a green color filter, and a blue color filter corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel. Among the overlap areas of the red color filter, the green color filter, and the blue color filter with the embankment, the overlap area of ​​the red color filter with the embankment may be the largest.

[0184] According to one embodiment of the present disclosure, the light-emitting display device may further include a dummy red filter that overlaps with at least one of the non-light-emitting portions of the green sub-pixels or the non-light-emitting portions of the blue sub-pixels.

[0185] In a light-emitting display device according to one embodiment of the present disclosure, a red filter may include a first region overlapping a light-emitting portion of a red sub-pixel and a second region overlapping a non-light-emitting portion of the red sub-pixel, the first and second regions being connected to each other, and the second region having a shape surrounding the first region. The second region may be connected to a dummy red filter.

[0186] In a light-emitting display device according to one embodiment of the present disclosure, the reflective layer may overlap with the dummy red filter and the red filter at the non-light-emitting portion of the red sub-pixel, respectively.

[0187] In a light-emitting display device according to one embodiment of the present disclosure, the reflective layer may contact the upper surface of the embankment.

[0188] In a light-emitting display device according to one embodiment of the present disclosure, the reflective layer may contact the upper surface of the encapsulation layer.

[0189] In one embodiment of the light-emitting display device according to the present disclosure, the reflective layer may be positioned to contact the lower surface of the color filter.

[0190] In one embodiment of the light-emitting display device according to the present disclosure, it may further include a light-shielding layer located on the encapsulation layer and overlapping with the non-light-emitting portion, and the light-shielding layer may overlap with at least a portion of the embankment.

[0191] In a light-emitting display device according to one embodiment of the present disclosure, the reflective layer may include a reflective metal.

[0192] In a light-emitting display device according to one embodiment of the present disclosure, the light-emitting element may include a first electrode and a second electrode facing each other, and an intermediate layer between the first electrode and the second electrode. The reflective layer may be electrically isolated from each of the first electrode and the second electrode.

[0193] In a light-emitting display device according to one embodiment of the present disclosure, the intermediate layer may include a light-emitting layer, a first common layer below the light-emitting layer, and a second common layer above the light-emitting layer. The reflective layer may contact or overlap with the first common layer or the second common layer.

[0194] In one embodiment of the light-emitting display device according to the present disclosure, the embankment may include a black material.

[0195] In a light-emitting display device according to one embodiment of the present disclosure, the edge of the first electrode located at the non-light-emitting portion may be covered by a dam.

[0196] A light-emitting display device according to one embodiment of the present disclosure may include: a substrate including a first sub-pixel, a second sub-pixel, and a third sub-pixel, each having a light-emitting portion and a non-light-emitting portion; a dam disposed at the non-light-emitting portion of the first to third sub-pixels; a light-emitting element disposed at each of the first to third sub-pixels; an encapsulation layer covering the light-emitting element; a color filter located on the encapsulation layer and overlapping the light-emitting portion; and a reflective layer located between the dam and the color filter and reflecting external light passing through the color filter toward the color filter.

[0197] In one embodiment of the light-emitting display device according to the present disclosure, the color filter may include a first color filter, a second color filter, and a third color filter, which are respectively corresponding to the first sub-pixel to the third sub-pixel.

[0198] According to one embodiment of the present disclosure, the light-emitting display device may further include a dummy color filter that transmits light of the same color as the first color filter in the area where the non-light-emitting portion overlaps with the reflective layer.

[0199] In a light-emitting display device according to one embodiment of the present disclosure, a dummy color filter may be located on the same layer as the first to third color filters.

[0200] In a light-emitting display device according to one embodiment of the present disclosure, the first color filter may have a larger overlap area with the non-light-emitting portion than each of the second and third color filters.

[0201] In a light-emitting display device according to one embodiment of the present disclosure, the wavelength of light guided from below the color filter toward the color filter in the initial state can be optically complementary to the wavelength of light configured to pass through the first color filter.

[0202] In a light-emitting display device according to one embodiment of the present disclosure, a first color filter and a dummy color filter can transmit light with a wavelength of 600 nm to 650 nm. A second color filter can transmit light with a wavelength of 510 nm to 590 nm. A third color filter can transmit light with a wavelength of 430 nm to 495 nm.

[0203] A light-emitting display device according to one embodiment of the present disclosure may include: a substrate including a first sub-pixel, a second sub-pixel, and a third sub-pixel, each having a light-emitting portion and a non-light-emitting portion; a light-emitting element disposed at each of the first to third sub-pixels; a color filter located above the light-emitting element and configured to overlap with the light-emitting portions of the first to third sub-pixels; and a reflective layer disposed within the non-light-emitting portions of the first to third sub-pixels and having an opening that exposes the light-emitting portions of the first to third sub-pixels.

[0204] According to one embodiment of the present disclosure, the light-emitting display device may have an anti-reflective structure including a color filter that participates in color display and a light-shielding layer, thereby enabling improved light transmittance without using a polarizer.

[0205] According to one embodiment of the present disclosure, a light-emitting display device may provide a reflective layer between the upper surface of the embankment and a color filter, and extend the color filter to overlap with the reflective layer, thereby increasing the reflection efficiency of light with a specific wavelength range in the area where the color filter and the reflective layer overlap.

[0206] According to one embodiment of the present disclosure, a light-emitting display device can achieve a clear color even when the light emitted below the anti-reflective structure is biased towards a specific color. This is achieved by using a complementary color reflectivity structure through the overlapping of the reflective layer and the color filter, thereby enabling clear colors during final emission without any decrease in visibility that would otherwise be perceived as a specific color. For example, an initial black state can be achieved as a clear black, and when the light-emitting display device is driven to display colors including white, the corresponding colors can be achieved without bias towards a specific color. Therefore, high contrast can be obtained.

[0207] According to one embodiment of the present disclosure, the light-emitting display device can control visibility adjustment by controlling the color filter and reflective layer of the anti-reflective structure without adjusting the area of ​​the light-emitting portion. This prevents the decline in the lifetime balance of red, green, and blue sub-pixels when the area of ​​the light-emitting portion of a specific color is increased, and maintains the color temperature characteristics.

[0208] By adjusting the color filter and adding a reflective layer, the light-emitting device according to one embodiment of the present disclosure can prevent the visual recognition of a specific color in the initial state or after a period of driving, achieving high efficiency and minimizing the increase in material costs, thereby demonstrating environmental, social and governance (ESG) effects.

[0209] From the above description, those skilled in the art should understand that various changes and modifications can be made without departing from the technical spirit of this disclosure. Therefore, the technical scope of this disclosure should not be limited to the above detailed description, but should be defined by the scope of the claims.

[0210] This application claims the benefit and priority of Korean Patent Application No. 10-2024-0158417, filed on November 8, 2024, the entire contents of which are incorporated herein by reference for all purposes, as if fully set forth herein.

Claims

1. A light-emitting display device, the light-emitting display device comprising: A substrate, the substrate comprising red sub-pixels, green sub-pixels and blue sub-pixels, each sub-pixel having a light-emitting portion and a non-light-emitting portion; A dam, the dam being located at the non-light-emitting portions of the red sub-pixel, the green sub-pixel, and the blue sub-pixel; A light-emitting element, wherein the light-emitting element is located at each of the red sub-pixel, the green sub-pixel, and the blue sub-pixel; An encapsulation layer that covers the light-emitting element; A color filter, which is located on the encapsulation layer and overlaps with the light-emitting portion; as well as A reflective layer is located between the embankment and the color filter and at least overlaps with the embankment.

2. The light-emitting display device according to claim 1, wherein, The color filter includes a red filter overlapping the light-emitting portion of the red sub-pixel, a green filter overlapping the light-emitting portion of the green sub-pixel, and a blue filter overlapping the light-emitting portion of the blue sub-pixel. The red filter has an extension extending beyond the non-light-emitting portion of the red sub-pixel, and the extension of the red filter is configured to cross the boundary between the red sub-pixel and the adjacent green or blue sub-pixel.

3. The light-emitting display device according to claim 1, wherein, The color filters include red filters, green filters, and blue filters corresponding to the red sub-pixel, the green sub-pixel, and the blue sub-pixel, and Among the overlapping areas of the red filter, the green filter, and the blue filter with the embankment, the overlapping area of ​​the red filter with the embankment is the largest.

4. The light-emitting display device according to claim 2, wherein the light-emitting display device further comprises a dummy red filter overlapping with at least one of the non-light-emitting portion of the green sub-pixel or the non-light-emitting portion of the blue sub-pixel.

5. The light-emitting display device according to claim 4, wherein, The red filter includes a first region overlapping the luminous portion of the red sub-pixel and a second region overlapping the non-luminous portion of the red sub-pixel, the first region and the second region being connected to each other, and the second region having a shape surrounding the first region. The second region is connected to the dummy red filter.

6. The light-emitting display device according to claim 4, wherein, The reflective layer overlaps with the dummy red filter and the red filter at the non-light-emitting portion of the red sub-pixel, respectively.

7. The light-emitting display device according to claim 1, wherein, The reflective layer is in contact with the upper surface of the embankment.

8. The light-emitting display device according to claim 1, wherein, The reflective layer is in contact with the upper surface of the encapsulation layer.

9. The light-emitting display device according to claim 1, wherein, The reflective layer is positioned to contact the lower surface of the color filter.

10. The light-emitting display device according to claim 1, further comprising a light-shielding layer located on the encapsulation layer and overlapping the non-light-emitting portion. in, The light-shielding layer overlaps with at least a portion of the embankment.

11. The light-emitting display device according to claim 1, wherein, The reflective layer comprises a reflective metal.

12. The light-emitting display device according to claim 1, wherein, The light-emitting element includes a first electrode and a second electrode facing each other, and an intermediate layer between the first electrode and the second electrode. The reflective layer is electrically isolated from each of the first electrode and the second electrode.

13. The light-emitting display device according to claim 12, wherein, The intermediate layer includes a light-emitting layer, a first common layer below the light-emitting layer, and a second common layer above the light-emitting layer. The reflective layer is in contact with or overlaps with the first common layer or the second common layer.

14. The light-emitting display device according to claim 1, wherein, The embankment is made of black material.

15. The light-emitting display device according to claim 12, wherein, The edge of the first electrode located at the non-light-emitting portion is covered by the embankment.

16. A light-emitting display device, the light-emitting display device comprising: A substrate, the substrate comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, each sub-pixel having a light-emitting portion and a non-light-emitting portion; A dam portion is disposed at the non-light-emitting portion from the first sub-pixel to the third sub-pixel; A light-emitting element, wherein the light-emitting element is disposed at each of the first sub-pixel to the third sub-pixel; An encapsulation layer that covers the light-emitting element; A color filter, which is located on the encapsulation layer and overlaps with the light-emitting portion; as well as A reflective layer is located between the embankment and the color filter and reflects external light that has passed through the color filter toward the color filter.

17. The light-emitting display device according to claim 16, wherein, The color filter includes a first color filter, a second color filter, and a third color filter, which are respectively corresponding to the first sub-pixel to the third sub-pixel. The light-emitting display device further includes a dummy color filter, which transmits light of the same color as the first color filter in the area where the non-light-emitting portion overlaps with the reflective layer.

18. The light-emitting display device according to claim 17, wherein, The dummy color filter is located on the same layer as the first to the third color filters.

19. The light-emitting display device according to claim 17, wherein, The overlap area between the first color filter and the non-luminous portion is greater than the overlap area between each of the second and third color filters and the non-luminous portion.

20. The light-emitting display device according to claim 17, wherein, In the initial state, the wavelength of light guided from below the color filter toward the color filter is optically complementary to the wavelength of light configured to pass through the first color filter.

21. The light-emitting display device according to claim 17, wherein, The first color filter and the dummy color filter transmit light with a wavelength of 600nm to 650nm. The second color filter transmits light with wavelengths from 510 nm to 590 nm, and The third color filter transmits light with wavelengths from 430 nm to 495 nm.

22. A light-emitting display device, the light-emitting display device comprising: A substrate, the substrate comprising a first sub-pixel, a second sub-pixel and a third sub-pixel, each sub-pixel having a light-emitting portion and a non-light-emitting portion; A light-emitting element, wherein the light-emitting element is disposed at each of the first sub-pixel to the third sub-pixel; A color filter, the color filter being located above the light-emitting element and configured to overlap with the light-emitting portions of the first sub-pixel to the third sub-pixel; A light-shielding layer, which is positioned above the light-emitting element and overlaps with the non-light-emitting portion; as well as A reflective layer is disposed within the non-light-emitting portion of the first sub-pixel to the third sub-pixel and has an opening that exposes the light-emitting portion of the first sub-pixel to the third sub-pixel.

Images