Light emitting display device

Abstract

A light-emitting display device may include: a substrate including a plurality of sub-pixels arranged along a first direction, each sub-pixel including a light-emitting area and a non-light-emitting area; at least one thin-film transistor disposed in the non-light-emitting area on the substrate; at least one protective layer disposed on the at least one thin-film transistor; and at least one color filter disposed on at least one of the protective layers of at least some of the plurality of sub-pixels, wherein each of the plurality of sub-pixels may include a pixel electrode, a light-emitting layer, a common electrode, and a dam for defining an opening area of ​​the pixel electrode, wherein at least one of the plurality of sub-pixels is configured such that at least a portion of the color filter of at least one other sub-pixel adjacent to the at least one sub-pixel extends in the first direction and overlaps with the opening area of ​​the pixel electrode of the at least one sub-pixel.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit and priority of Korean Patent Application No. 10-2024-0197724, filed on December 26, 2024, which is incorporated herein by reference in its entirety for all purposes. Technical Field

[0003] This invention relates to a light-emitting display device. Background Technology

[0004] With the advancement of the information age, the demand for display devices for displaying images has increased in various forms. As a result, various types of display devices have recently been used, such as liquid crystal displays (LCDs), organic light-emitting diode (OLEDs), inorganic light-emitting diode (OLEDs), LEDs, and quantum dot (QD) displays.

[0005] Among display devices, organic light-emitting displays, quantum dot displays, inorganic light-emitting displays, and micro-LED displays are self-emissive display devices. These devices offer superior viewing angles and contrast compared to conventional LCD displays, and do not require a separate backlight, thus enabling lightweight and thin designs while providing improved power efficiency.

[0006] This type of light-emitting display device primarily uses polarizers on the display surface of the display panel to reduce external light reflection. However, when a light-emitting display device uses polarizers, the transmittance decreases, thereby reducing the efficiency of the display panel and increasing power consumption. Summary of the Invention

[0007] Therefore, the present invention aims to provide a light-emitting display device that substantially eliminates one or more problems caused by the limitations and disadvantages of related technologies.

[0008] One or more embodiments of the present invention may provide a light-emitting display device that can reduce reflectivity, increase light efficiency, and enhance reflected color and visual perception without using a polarizer.

[0009] One or more embodiments of the present invention may provide a light-emitting display device that can reduce reflectivity, improve light efficiency, and enhance reflected color and visual perception while minimizing or reducing additional masking processes.

[0010] Additional advantages and features of the invention will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon studying the following, or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures specifically pointed out in the written description, its claims, and the accompanying drawings.

[0011] A light-emitting display device according to one or more embodiments of the present invention may include: a substrate including a plurality of sub-pixels arranged along a first direction, each of the plurality of sub-pixels including a light-emitting region and a non-light-emitting region; at least one thin-film transistor disposed in the non-light-emitting region on the substrate; at least one protective layer disposed on the at least one thin-film transistor; and at least one color filter disposed on at least one of the protective layers of at least some of the plurality of sub-pixels, wherein each of the plurality of sub-pixels may include a pixel electrode, a light-emitting layer, a common electrode and a dam for defining an opening region of the pixel electrode, and at least one of the plurality of sub-pixels may be configured such that at least a portion of the color filter of at least one other sub-pixel adjacent to the at least one sub-pixel extends in the first direction and overlaps with the opening region of the pixel electrode of the at least one sub-pixel.

[0012] According to one or more embodiments of the present invention, a light-emitting display device can be provided that can reduce reflectivity, improve light efficiency, and enhance reflected color and visual perception without using a polarizer.

[0013] According to one or more embodiments of the present invention, a light-emitting display device can be provided that can reduce reflectivity, improve light efficiency, and enhance reflected color and visual perception while minimizing or reducing additional masking processes.

[0014] The light-emitting display device according to one or more embodiments of the present invention can simplify the manufacturing process by eliminating the need for polarizers while minimizing or reducing additional masking processes. As a result, greenhouse gas emissions generated during manufacturing can be reduced, and environmental, social, and governance (ESG) benefits can be realized.

[0015] The effects of the present invention are not limited to the foregoing description, but rather, those skilled in the art will clearly understand from the following description other effects not described herein.

[0016] The details of the invention described in the technical problems, technical solutions and beneficial effects do not specify the essential features of the claims; therefore, the scope of the claims is not limited by the details described in the specific description of the invention. Attached Figure Description

[0017] The accompanying drawings, which provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate various aspects and exemplary embodiments of the invention, and together with the description, serve to explain the various principles and examples of the invention.

[0018] Figure 1 An exemplary embodiment of a light-emitting display device according to the present invention is shown.

[0019] Figure 2 This is a circuit diagram illustrating a sub-pixel of a light-emitting display device according to an exemplary embodiment of the present invention.

[0020] Figure 3 The pixel structure of a light-emitting display device according to an exemplary embodiment of the present invention is shown.

[0021] Figure 4 The diagram illustrates the embankment and color filter of a pixel according to an exemplary embodiment of the present invention.

[0022] Figure 5 According to an exemplary embodiment of the present invention... Figure 4 The cross-sectional view taken from line I-I' in the diagram.

[0023] Figure 6 The diagram illustrates the embankment and color filter of a pixel according to an exemplary embodiment of the present invention.

[0024] Figure 7 According to an exemplary embodiment of the present invention... Figure 6 The cross-sectional view taken from line II-II' in the diagram.

[0025] Figure 8 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention.

[0026] Figure 9 This is another exemplary embodiment of the present invention. Figure 8 The cross-sectional view taken from line III-III' in the diagram.

[0027] Figure 10 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention.

[0028] Figure 11 This is another exemplary embodiment of the present invention. Figure 10 The cross-sectional view taken from line IV-IV' in the diagram.

[0029] Figure 12 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention.

[0030] Figure 13This is another exemplary embodiment of the present invention. Figure 12 The cross-sectional view taken from line V-V' in the diagram.

[0031] Figure 14 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention.

[0032] Figure 15 This is another exemplary embodiment of the present invention. Figure 14 The cross-sectional view taken from line VI-VI' in the diagram.

[0033] Figure 16 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention.

[0034] Figure 17 This is another exemplary embodiment of the present invention. Figure 16 The cross-sectional view taken from line VII-VII' in the diagram.

[0035] Figure 18 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention.

[0036] Figure 19 This is another exemplary embodiment of the present invention. Figure 18 The cross-sectional view taken from line VIII-VIII' in the diagram.

[0037] Figure 20 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention.

[0038] Figure 21 According to another embodiment of the present invention, along Figure 20 The cross-sectional view taken from line IX-IX' in the diagram.

[0039] Throughout the accompanying drawings and detailed description, unless otherwise stated, the same reference numerals shall be understood to refer to the same elements, features, and structures. For clarity, illustrative, and / or convenience purposes, the dimensions, lengths, and thicknesses of layers, regions, and elements, and their depictions, may be exaggerated. Detailed Implementation

[0040] The advantages and features of this invention, as well as its implementation methods, will be illustrated by various exemplary embodiments described with reference to the accompanying drawings. However, this invention may be implemented in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are examples provided to make the disclosure of this invention thorough and complete, to assist those skilled in the art in understanding the inventive concept, and not to limit the scope of protection of this invention.

[0041] The shapes (e.g., size, length, width, height, thickness, position, radius, diameter, and area), dimensions, ratios, angles, quantities, etc., disclosed herein (including those shown in the accompanying drawings) are merely examples. Therefore, the invention is not limited to the details shown. Any embodiment described herein as "examples" should not be construed as being more preferred or advantageous than other embodiments. However, it should be noted that the relative sizes of the components shown in the accompanying drawings are part of the invention.

[0042] Where terms such as “comprising,” “having,” “including,” “containing,” “constituting,” etc., are used to describe one or more elements, one or more other elements may be added unless more restrictive terms, such as “only,” are used. The terminology used in this invention is for describing exemplary embodiments only and is not intended to limit the scope of the invention. Singular terms may include plural forms, and vice versa, unless the context clearly indicates otherwise.

[0043] When interpreting elements, they are interpreted as including error zones, even though they are not explicitly described.

[0044] When describing positional relationships, for example, when the positional order is described as "on top of", "above", "below", "below", and "next", situations in which there is no contact between them may be included, unless more restrictive terms such as "exactly" or "directly" are used.

[0045] If it is mentioned that the first element is positioned "on" the second element, it does not necessarily mean that the first element is positioned above the second element in the drawing. The upper and lower parts of the related objects can change depending on the orientation of the objects. Therefore, the case of the first element being positioned "on" the second element in the drawing or in the actual configuration includes both the case of the first element being positioned "below" the second element and the case of the first element being positioned "above" the second element.

[0046] When describing temporal relationships, such as when the time sequence is described as “after,” “following,” “next,” and “before,” discontinuous situations may be included unless more restrictive terms such as “exactly” or “directly” are used.

[0047] It should be understood that although the terms “first,” “second,” etc., may be used in this document to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0048] In describing the elements of the present invention, terms such as “first,” “second,” “A,” “B,” “(a),” “(b),” etc., may be used. These terms are intended to identify the corresponding element from other elements and are not used to limit the nature, basis, order, or number of elements.

[0049] For any expression describing a component as “connecting,” “joining,” “attaching,” “adhering,” etc., to another component, the component may not only be directly connected, joined, attached, adhered, etc., to the other component, but may also be indirectly connected, joined, attached, adhered, etc., to the other component through one or more intermediate components disposed or inserted between the components, unless otherwise specified.

[0050] Unless otherwise stated, the description of one element "overlapping" with another element means that the element may not only be in direct contact with or overlap with another element, but may also overlap indirectly with another element if one or more intermediate elements are provided or inserted between the elements.

[0051] The term “at least one” should be understood to include any and all combinations of one or more of the related listed items. For example, “at least one of the first element, the second element, and the third element” can include all combinations of two or more elements selected from the first element, the second element, and the third element, as well as each of the first element, the second element, and the third element.

[0052] Features of various embodiments of the present invention may be partially or completely combined or integrated with each other, may be technically related to each other, and may interoperate, link, or drive each other in various ways. Embodiments of the present invention may be implemented or performed independently of each other, or may be implemented or performed together in a mutually dependent or related relationship. In one or more aspects, components of each device according to various embodiments of the present invention are operatively engaged and configured.

[0053] In the following description, various exemplary embodiments of the invention are described in detail with reference to the accompanying drawings. Regarding the reference numerals for elements in each drawing, the same elements may be shown in other drawings, and similar reference numerals may refer to similar elements, unless otherwise stated. The same or similar elements may be represented by the same reference numerals, even if they are drawn in different drawings. Furthermore, for ease of description, the scale, size, dimensions, and thickness of each element shown in the drawings may differ from the actual scale, size, dimensions, and thickness. Therefore, embodiments of the invention are not limited to the scale, size, dimensions, and thickness shown in the drawings.

[0054] Figure 1 An exemplary embodiment of a light-emitting display device according to the present invention is shown.

[0055] In the following text, the X-axis represents the direction parallel to the scan line (or gate line), the Y-axis represents the direction parallel to the data line, and the Z-axis represents the thickness direction of the light-emitting display device.

[0056] The light-emitting display device according to an exemplary embodiment of the present invention is implemented as an organic light-emitting display device, but it can also be implemented as a liquid crystal display device, a quantum dot light-emitting diode display device, or an electrophoretic display device.

[0057] like Figure 1 As shown, an exemplary embodiment of the present invention may include a display panel 110, a scan driver 120 (or gate driver) built into the display panel 110, a data driver 130 connected to the display panel 110, a timing controller 160 for controlling the scan driver 120 and the data driver 130, and a power supply circuit 170.

[0058] Display panel 110 includes a display area DA and a non-display area NDA surrounding the display area DA. Display panel 110 includes pixels P disposed in the display area DA to display images. Each pixel P may include multiple subpixels SP. The structure of the subpixels SP can vary depending on the type of light-emitting display device. For example, subpixels SP can be formed as top-emitting, bottom-emitting, or double-sided-emitting types, depending on their structure. Subpixels SP represent units capable of forming a specific type of color filter or capable of emitting light of their own color without forming a color filter. Subpixels SP may have one or more other light-emitting areas depending on their light-emitting characteristics. For example, multiple subpixels SP can be arranged in a strip or quadrilateral pattern, but embodiments of the present invention are not limited thereto. The color type, arrangement type, arrangement order, etc., of the subpixels SP can be configured in various forms depending on the light-emitting characteristics, device lifespan, device specifications, etc.

[0059] Display panel 110 may include data lines DL and scan lines SL (or gate lines) connected to sub-pixels SP. Data lines DL may be arranged to intersect scan lines SL. Each sub-pixel SP of display panel 110 may be connected to any one of the data lines DL and any one of the scan lines SL. Data lines DL may supply data voltage from data driver 130 to each sub-pixel SP. Scan lines SL may supply scan signals from scan driver 120 to each sub-pixel SP.

[0060] Each sub-pixel SP is turned on by a scan signal. When the data voltage of the data line DL is supplied to the gate of the driving transistor, the light-emitting element can emit light according to the drain-source current of the driving transistor. The scan driver 120 can receive a scan control signal GCS from the timing controller 160. The scan driver 120 can provide a scan signal or a light emission control signal to the scan line SL by using the scan control signal GCS.

[0061] The scan driver 120 can be configured as an in-panel gate driver (GIP) in a non-display area NDA located on one or both sides of the display area DA. Alternatively, the scan driver 120 can be manufactured as a driver chip, mounted on a flexible film, and attached to the non-display area NDA located on one or both sides of the display area DA via a tape auto-bonding (TAB) method.

[0062] Data driver 130 receives digital video data DATA and data control signal DCS from timing controller 160. Data driver 130 converts digital video data DATA into analog positive / negative data voltages using data control signal DCS and supplies the analog positive / negative data voltages to data line DL.

[0063] The timing controller 160 receives digital video data DATA and timing signals from the host system. The timing signals may include a vertical sync signal, a horizontal sync signal, a data enable signal, and a dot clock. The vertical sync signal defines one frame period. The horizontal sync signal defines a horizontal time period for supplying data voltage to the pixels of a horizontal row of the display panel 110. The data enable signal defines the input period for valid data. The dot clock is a signal that repeats with a predetermined short period.

[0064] The timing controller 160 can generate a data control signal (DCS) for controlling the operating timing of the data driver 130 and a scan control signal (GCS) for controlling the operating timing of the scan driver 120 based on the timing signals. The timing controller 160 can output the scan control signal (GCS) to the scan driver 120 to control the scan driver 120, and output digital video data (DATA) and the data control signal (DCS) to the data driver 130 to control the data driver 130.

[0065] The power supply circuit 170 can generate and provide multiple drive voltages for the operation of all circuit configurations of the light-emitting display device by using an input voltage. The power supply circuit 170 can generate a first power supply voltage EVDD (or pixel power supply voltage), a second power supply voltage EVSS (or common power supply voltage), and an initialization voltage Vref (or reference voltage, see...). Figure 2 The generated voltage is supplied to the display panel 110. The power supply circuit 170 can generate and provide various drive voltages for the operation of the scan driver 120, the data driver 130, and the timing controller 160.

[0066] Figure 2 This is a circuit diagram illustrating a sub-pixel of a light-emitting display device according to an exemplary embodiment of the present invention.

[0067] like Figure 2As shown, each pixel P includes multiple sub-pixels SP constituting a unit pixel. In each of the multiple sub-pixels SP, there is a pixel circuit comprising: 3T (transistors) 1C (capacitors), including a driving transistor DR, a first switching transistor TR1, a second switching transistor TR2, and a storage capacitor Cst; and a light-emitting device ED, but not limited thereto. Each sub-pixel SP may also include a compensation circuit. In this case, the sub-pixel SP can have various structures, such as 3T2C, 4T1C, 4T2C, 5T1C, 5T2C, 6T1C, 6T2C, 7T1C, and 7T2C.

[0068] At least one thin-film transistor DR, TR1, and TR2 in each sub-pixel SP may include a gate, a source, and a drain. Since the source and drain can change rather than be fixed depending on the voltage and current direction applied to the gate, either the source or the drain may be represented as a first electrode, and the other as a second electrode. At least one transistor DR, TR1, and TR2 may be made of at least one of polycrystalline silicon semiconductor, amorphous silicon semiconductor, and oxide semiconductor. Transistors DR, TR1, and TR2 may be P-type or N-type, or P-type and N-type may be used interchangeably.

[0069] The driving transistor DR corresponds to a transistor used to drive a light-emitting device ED, and the driving transistor DR includes: a first node N1 to which a data voltage Vdata is applied; a second node N2 connected to the pixel electrode (first electrode or anode) of the light-emitting device ED; and a third node N3 connected to a first power line VDDL (or pixel power line) and supplied with a first power supply voltage EVDD (or pixel power voltage). For example, the driving transistor DR can generate a data current according to the first power supply voltage EVDD supplied from the first power line VDDL, and can supply the data current to the first electrode of the light-emitting device ED.

[0070] The first switching transistor TR1 can be used to supply the data voltage Vdata from the data line DL to the first node N1 of the driving transistor DR. The second switching transistor TR2 can be used to supply the reference voltage Vref from the reference line REFL to the second node N2 of the driving transistor DR, or can output the voltage of the second node N2 of the driving transistor DR. A storage capacitor Cst can be connected between the first node N1 and the second node N2 of the driving transistor DR. The storage capacitor Cst can be used to hold the data voltage Vdata supplied to the driving transistor DR within a frame, but embodiments of the present invention are not limited thereto.

[0071] The light-emitting device (ED) may include: a pixel electrode (first electrode or anode) connected to a second node N2 of a driving transistor DR; and a common electrode (second electrode or cathode) connected to a second power line VSSL. The ED emits light through a light-emitting layer (or organic light-emitting layer) between the first and second electrodes in response to a driving current generated by the driving transistor DR. The pixel electrode of the ED may be an independent electrode for each light-emitting device, and the common electrode and light-emitting layer of the ED may be a common layer shared by the entire light-emitting device; however, embodiments of the present invention are not limited thereto.

[0072] Figure 3 The pixel structure of a light-emitting display device according to an exemplary embodiment of the present invention is shown. Figure 4 The diagram illustrates the embankment and color filter of a pixel according to an exemplary embodiment of the present invention. Figure 5 According to an exemplary embodiment of the present invention... Figure 4 The cross-sectional view taken from line I-I' in the diagram.

[0073] like Figures 3 to 5 As shown, the light-emitting display device according to an embodiment of the present invention may include: a pixel P; a data line DL; a scan line SL (or a gate line); a first power line VDDL; pixel circuits CA1, CA2, CA3 and CA4; at least one color filter CF1, CF3 and CF4; and a dam BA.

[0074] Pixel P may include multiple sub-pixels SP1, SP2, SP3, and SP4. These sub-pixels SP1, SP2, SP3, and SP4 may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4. The first sub-pixel SP1, second sub-pixel SP2, third sub-pixel SP3, and fourth sub-pixel SP4 may be arranged in a first direction (or the X-axis direction) or a second direction (or the Y-axis direction). For example, the first sub-pixel SP1, second sub-pixel SP2, third sub-pixel SP3, and fourth sub-pixel SP4 may be arranged adjacent to each other in the first direction (or the X-axis direction). The first sub-pixel SP1, second sub-pixel SP2, third sub-pixel SP3, and fourth sub-pixel SP4 may include light-emitting areas EA1, EA2, EA3, and EA4, and a non-light-emitting area NEA.

[0075] The light-emitting regions EA1, EA2, EA3, and EA4 may correspond to the areas in pixel P that emit light. The light-emitting regions EA1, EA2, EA3, and EA4 may include first to fourth light-emitting regions EA1, EA2, EA3, and EA4 that emit different colors of light. For example, the first to fourth light-emitting regions EA1, EA2, EA3, and EA4 may overlap with the opening region OA of the pixel electrode AE ​​(first electrode or anode) defined by the embankment BA.

[0076] The first to fourth light-emitting regions EA1, EA2, EA3, and EA4 may overlap with at least one color filter CF1, CF3, and CF4 corresponding to the first to fourth sub-pixels SP1, SP2, SP3, and SP4. For example, the first to fourth light-emitting regions EA1, EA2, EA3, and EA4 may overlap with the opening region OA of the pixel electrode AE ​​and at least one color filter CF1, CF3, and CF4.

[0077] The first to fourth light-emitting areas EA1, EA2, EA3, and EA4 can emit light of different colors through at least one color filter CF1, CF3, and CF4. For example, at least one color filter CF1, CF3, and CF4 can emit light of different colors. For example, at least one color filter CF1, CF3, and CF4 can be formed of organic materials that transmit different colors of light. At least one color filter CF1, CF3, and CF4 may include a first color filter CF1 that transmits red light, a third color filter CF3 that transmits blue light, and a fourth color filter CF4 that transmits green light. For example, the first light-emitting area EA1 of the first sub-pixel SP1 can emit red light through the first color filter CF1, the second light-emitting area EA2 of the second sub-pixel SP2 may not have a color filter and can emit white light, the third light-emitting area EA3 of the third sub-pixel SP3 can emit blue light through the third color filter CF3, and the fourth light-emitting area EA4 of the fourth sub-pixel SP4 can emit green light through the fourth color filter CF4, but the embodiments of the present invention are not limited to this.

[0078] The non-light-emitting area (NEA) may include: data lines DL; scan lines SL (or gate lines); first power lines VDDL; and pixel circuits CA1, CA2, CA3, and CA4. The NEA may overlap with the embankment BA. For example, the NEA may be the area other than the first to fourth light-emitting areas EA1, EA2, EA3, and EA4 of the first to fourth sub-pixels SP1, SP2, SP3, and SP4.

[0079] A scan line SL extending in a first direction (or the X-axis direction) may be disposed in a non-emitting region NEA, and a data line DL and a first power line VDDL extending in a second direction (or the Y-axis direction) intersecting the first direction may be disposed in the non-emitting region NEA. Furthermore, a second power line VSSL extending in the second direction may be disposed in the non-emitting region NEA, but embodiments of the present invention are not limited thereto.

[0080] Pixel circuits CA1, CA2, CA3, and CA4 corresponding to each of sub-pixels SP1, SP2, SP3, and SP4 can be located in the non-light-emitting area NEA. For example, as Figure 2As shown, each of the pixel circuits CA1, CA2, CA3, and CA4 may include at least one thin-film transistor DR, TR1, and TR2, and a storage capacitor Cst. At least one thin-film transistor DR, TR1, and TR2 may include a driving transistor DR, a first switching transistor TR1, and a second switching transistor TR2, but embodiments of the present invention are not limited thereto.

[0081] like Figure 5 As shown, a light-emitting display device according to an exemplary embodiment of the present invention may include: a substrate 111; a data line DL; a first power line VDDL; a buffer layer BF; a passivation layer PAS; at least one color filter CF1, CF3 and CF4; a planarization layer OC; a pixel electrode AE; an organic light-emitting layer EL; a common electrode CE; and a dam BA.

[0082] At least some of the signal lines can be provided on the substrate 111. For example, a data line DL and a first power line VDDL can be provided on the substrate 111. Furthermore, a reference line REFL and a second power line VSSL can be provided on the substrate 111, but embodiments of the present invention are not limited thereto. For example, at least one signal line provided at the bottom of the substrate 111 can be formed of the same material in the same layer as the light-shielding layers provided in the pixel circuits CA1, CA2, CA3, and CA4. For example, the light-shielding layers can be used to block external light incident on the active layer of the thin-film transistor. The light-shielding layers can be formed of one or more single layers or multiple layers of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu) and their alloys.

[0083] A buffer layer BF may be disposed on the substrate 111. The buffer layer BF may be configured to cover at least one signal line and a light-shielding layer disposed on the substrate 111. At least one protective layer and at least one thin-film transistor may be disposed on the buffer layer BF, and the at least one protective layer may be disposed on the at least one thin-film transistor. For example, the at least one protective layer may include a passivation layer PAS. The passivation layer PAS may be a single layer or multiple layers comprising inorganic insulating materials such as silicon oxide (SiOX), silicon nitride (SiNX), or aluminum oxide (Al2O3).

[0084] At least one color filter CF1, CF3, and CF4 may be disposed on the passivation layer PAS. At least one color filter CF1, CF3, and CF4 may be configured to correspond to the first sub-pixel SP1, the third sub-pixel SP2, and the fourth sub-pixel SP4 among the first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4. A color filter may not be disposed in the second sub-pixel SP2 among the first sub-pixel SP1, the second sub-pixel SP2, the third sub-pixel SP3, and the fourth sub-pixel SP4. For example, a first color filter CF1, which converts white light emitted from the organic light-emitting layer EL into red light, may be disposed in the first emitting area EA1 of the first sub-pixel SP1. The second emitting area EA2 of the second sub-pixel SP2 may emit white light as is without a color filter. A third color filter CF3, which converts white light emitted from the organic light-emitting layer EL into blue light, may be disposed in the third emitting area EA3 of the third sub-pixel SP3. A fourth color filter CF4, which converts white light emitted from the organic light-emitting layer EL into green light, may be disposed in the fourth emitting area EA4 of the fourth sub-pixel SP4.

[0085] A planarization layer OC (or outer coating) may be disposed on the passivation layer PAS and at least one color filter CF1, CF3, and CF4. The planarization layer OC can planarize the step differences caused by at least one signal line, at least one thin-film transistor, and at least one color filter CF1, CF3, and CF4 disposed on the substrate 111, and may be formed of an organic insulating material. For example, the planarization layer OC may be formed of organic materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin, but embodiments of the present invention are not limited thereto.

[0086] The pixel electrode AE ​​(first electrode or anode), organic light-emitting layer EL, common electrode CE (second electrode or cathode), and embankment BA constituting the light-emitting device ED can be disposed on the planarization layer OC.

[0087] Pixel electrodes AE can be disposed on the planarization layer OC. Pixel electrodes AE can be patterned and disposed on the planarization layer OC for each sub-pixel SP1, SP2, SP3, and SP4. Pixel electrodes AE can be formed of transparent or semi-transparent metallic materials. For example, pixel electrodes AE can be formed of a transparent conductive material TCO that transmits light, such as indium tin oxide (ITO) or indium zinc oxide (IZO). Pixel electrodes AE can be formed of semi-transparent conductive materials such as magnesium (Mg), silver (Ag), or alloys of magnesium (Mg) and silver (Ag). For example, pixel electrodes AE formed of semi-transparent metallic materials can improve light extraction efficiency through microcavities. Pixel electrodes AE can be the anode of a light-emitting device (ED). According to embodiments of the present invention, pixel electrodes AE may also include a low-reflectivity metallic layer. For example, the low-reflectivity metallic layer may include metal oxides or alloy oxides. For example, the low-reflectivity metallic layer may include copper oxide (CuOx), nickel oxide (NiOx), molybdenum oxide (MoOx), or tungsten oxide (WOx), but embodiments of the present invention are not limited thereto.

[0088] A dam BA can be disposed on the pixel electrode AE ​​and the planarization layer OC. The dam BA can be disposed on the planarization layer OC to cover a portion of the edge of the pixel electrode AE. The dam BA can be configured to define an opening region OA of the pixel electrode AE. The opening region OA of the pixel electrode AE ​​can correspond to the light-emitting regions EA1, EA2, EA3, and EA4 of each sub-pixel SP1, SP2, SP3, and SP4. For example, the opening region OA of the pixel electrode AE ​​exposed by the dam BA can be configured to directly contact the light-emitting layer EL and emit light from the light-emitting regions EA1, EA2, EA3, and EA4.

[0089] A dam BA may be disposed within the non-light-emitting area NEA of each sub-pixel SP1, SP2, SP3, and SP4. The dam BA may overlap with pixel circuits CA1, CA2, CA3, and CA4, and at least one signal line. For example, the dam BA may be formed of an organic layer such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin. According to embodiments of the invention, the dam BA may be a black dam comprising at least one of a light-absorbing material and a black material. For example, the dam BA may comprise an insulating light-absorbing material such as black resin or graphite.

[0090] An organic light-emitting layer (EL) can be disposed on the pixel electrode AE ​​and the embankment BA. The EL may include a hole transport layer, a light-emitting material layer, and an electron transport layer. For example, when a voltage is applied to the pixel electrode AE ​​and the common electrode CE, holes and electrons can move to the EL through the hole transport layer and the electron transport layer, respectively, and can combine with each other in the EL to emit light. The EL may be a common layer formed together on multiple sub-pixels SP1, SP2, SP3, and SP4. For example, the EL may be a white light-emitting layer that emits white light.

[0091] A common electrode CE can be disposed on the organic light-emitting layer EL. The common electrode CE can be a common layer formed together on multiple sub-pixels SP1, SP2, SP3, and SP4. The common electrode CE can be disposed on the pixel electrodes AE and the organic light-emitting layer EL that are in contact with each other to constitute a light-emitting device ED. For example, the common electrode CE can be formed from a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an Ag alloy, a stacked structure of Ag alloy and ITO (ITO / Ag alloy / ITO), a MoTi alloy, and a stacked structure of MoTi alloy and ITO (ITO / MoTi alloy / ITO). The Ag alloy can be an alloy of silver (Ag), palladium (Pd), copper (Cu), etc. The MoTi alloy can be an alloy of molybdenum (Mo) and titanium (Ti). The common electrode CE can be the cathode of the light-emitting device ED. According to embodiments of the present invention, the common electrode CE may also include a low-reflectivity metal layer. For example, the low-reflectivity metal layer may include a metal oxide or an alloy oxide. For example, the low-reflectivity metal layer may include copper oxide (CuOx), nickel oxide (NiOx), molybdenum oxide (MoOx), or tungsten oxide (WOx), but the embodiments of the present invention are not limited thereto.

[0092] According to embodiments of the present invention, a transmittance control film may be further included on the rear surface of the substrate 111. For example, the transmittance control film may include at least one of a transparent film and a light-absorbing film, but embodiments of the present invention are not limited thereto.

[0093] Figure 6 The diagram illustrates the embankment and color filter of a pixel according to an exemplary embodiment of the present invention. Figure 7 According to an exemplary embodiment of the present invention... Figure 6 The cross-sectional view taken from line II-II' in the diagram. Figure 6 and Figure 7 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 5 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 6 and Figure 7In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0094] like Figure 6 and Figure 7 As shown, a light-emitting display device according to one embodiment of the present invention can be configured such that a bank portion BA disposed between a plurality of sub-pixels SP1, SP2, SP3, and SP4 extends toward the center portion of a pixel electrode AE ​​in a first direction (or the X-axis direction) to define a non-opening bank portion (NOA) of the pixel electrode AE. For example, the bank portion BA adjacent to the second sub-pixel SP2 in the first direction may include a non-opening bank portion (NBA) disposed in the non-opening bank portion (NOA) of the pixel electrode AE ​​of the second sub-pixel SP2. For example, the non-opening bank portion NBA may be configured to extend in the first direction from the left and right edge ends of the pixel electrode AE ​​of the second sub-pixel SP2 toward the center portion of the pixel electrode AE.

[0095] The non-aperture dam portion NBA of the second sub-pixel SP2 can extend from the dam portion BA between the first sub-pixel SP1 and the second sub-pixel SP2 toward the center portion of the pixel electrode AE ​​of the second sub-pixel SP2, and can also extend from the dam portion BA between the second sub-pixel SP2 and the third sub-pixel SP3 toward the center portion of the pixel electrode AE ​​of the second sub-pixel SP2, thereby defining the non-aperture region NOA of the pixel electrode AE. Therefore, the light-emitting region EA2 of the second sub-pixel SP2 can be configured to have a smaller area than each of the light-emitting regions EA1, EA3, and EA4 of the first sub-pixel SP1, the third sub-pixel SP3, and the fourth sub-pixel SP4. For example, the non-aperture dam portion NBA of the second sub-pixel SP2 can overlap with the pixel electrode AE ​​of the second sub-pixel SP2. For example, the non-aperture dam portion NBA can cover a portion of the pixel electrode AE, thereby reducing the aperture ratio of the light-emitting portion. Furthermore, the non-aperture dam portion NBA can reduce the cell reflectance of the light-emitting region by absorbing a portion of the internal light that passes through the pixel electrode AE ​​and is reflected again by the common electrode CE.

[0096] According to one embodiment of the present invention, the non-aperture dam portion NBA can be configured to extend from the dam portion BA of the non-light-emitting region NEA at the left and right edges of the second sub-pixel SP2 toward the center portion of the pixel electrode AE ​​of the second sub-pixel SP2, thereby defining the non-aperture region NOA of the pixel electrode AE, thereby optimizing the aperture ratio of the light-emitting region EA2 of the second sub-pixel SP2 while minimizing or reducing additional masking processes. Therefore, the light-emitting display device according to one embodiment of the present invention can reduce the increase in reflectivity due to the absence of a polarizer and improve light efficiency.

[0097] Figure 8 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention. Figure 9 According to another embodiment of the present invention, along Figure 8 The cross-sectional view taken from line III-III' in the diagram. Figure 8 and Figure 9 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 7 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 8 and Figure 9 In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0098] like Figure 8 and Figure 9 As shown, a light-emitting display device according to another embodiment of the present invention can be configured such that a dam BA disposed between a plurality of sub-pixels SP1, SP2, SP3 and SP4 extends toward the center portion of the pixel electrode AE ​​in a second direction (or Y-axis direction) intersecting a first direction (or X-axis direction) to define a non-aperture region NOA of the pixel electrode AE. For example, the dam BA adjacent to the second sub-pixel SP2 in the first direction may include a non-aperture dam NBA disposed in the non-aperture region NOA of the pixel electrode AE ​​of the second sub-pixel SP2.

[0099] The non-aperture dam portion NBA of the second sub-pixel SP2 can extend from the dam portion BA between the first sub-pixel SP1 and the second sub-pixel SP2 toward the center portion of the pixel electrode AE ​​of the second sub-pixel SP2, and can also extend from the dam portion BA between the second sub-pixel SP2 and the third sub-pixel SP3 toward the center portion of the pixel electrode AE ​​of the second sub-pixel SP2, thereby defining the non-aperture region NOA of the pixel electrode AE. Therefore, the light-emitting region EA2 of the second sub-pixel SP2 can be configured to have a smaller area than each of the light-emitting regions EA1, EA3, and EA4 of the first sub-pixel SP1, the third sub-pixel SP3, and the fourth sub-pixel SP4. For example, the non-aperture dam portion NBA of the second sub-pixel SP2 can overlap with the pixel electrode AE ​​of the second sub-pixel SP2. For example, the non-aperture dam portion NBA can cover a portion of the pixel electrode AE, thereby reducing the aperture ratio of the light-emitting portion. Furthermore, the non-aperture dam portion NBA can reduce the unit reflectivity of the light-emitting region by absorbing a portion of the internal light that passes through the pixel electrode AE ​​and is reflected again by the common electrode CE.

[0100] According to another embodiment of the present invention, at least one sub-pixel SP2 may be configured such that at least a portion of the color filters CF1, CF3 of at least one other sub-pixel SP1, SP3 adjacent to at least one sub-pixel SP2 extends in a first direction and overlaps with the opening region OA of the pixel electrode AE ​​of at least one sub-pixel SP2. For example, at least a portion of the first color filter CF1 of the first sub-pixel SP1 may include a color filter extension (or extension portion) CFE extending in the first direction. The color filter extension CFE of the first sub-pixel SP1 may be configured to overlap with the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2. For example, the color filter extension CFE of the first sub-pixel SP1 may overlap with the pixel electrode AE ​​of the second sub-pixel SP2, and may also overlap with the light-emitting region EA2 of the second sub-pixel SP2. For example, the color filter extension CFE overlapping with the light-emitting region EA2 may absorb a portion of the externally incident light before the light reaches the pixel electrode AE, thereby further reducing the unit reflectivity of the emitting portion.

[0101] The color filter extension CFE of the first sub-pixel SP1 can be configured to overlap with the central portion of the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2 in a second direction (or the Y-axis direction) intersecting the first direction. For example, the color filter extension CFE can be configured such that the second sub-pixel SP2 has a reflectance equal to or lower than the reflectance of each of the other sub-pixels SP1, SP3, and SP4. For example, the color filter extension CFE can be configured to reduce the reflectance non-uniformity ratio of the second sub-pixel SP2. The reflectance non-uniformity ratio refers to the range of variation in the reflectance of a sub-pixel due to process deviations occurring during the manufacturing process of the light-emitting display device. For example, reducing the reflectance non-uniformity ratio can mean narrowing the range of variation between lower and higher reflectances caused by process deviations, based on the average reflectance measured from multiple sub-pixels. According to another embodiment of the invention, a color filter extension CFE having a lower reflectance than the second sub-pixel SP2 can be disposed at the central portion of the light-emitting region EA2 of the second sub-pixel SP2. As a result, the impact of process deviations can be minimized, the average reflectivity of the second sub-pixel SP2 can be optimized, and correspondingly, the reflectivity non-uniformity caused by process deviations can be improved.

[0102] According to another embodiment of the present invention, the non-aperture dam portion NBA can be configured to extend from the dam portion BA of the non-emitting area NEA at the left and right edges of the second sub-pixel SP2 toward the center portion of the pixel electrode AE ​​of the second sub-pixel SP2, thereby defining the non-aperture area NOA of the pixel electrode AE; the first sub-pixel SP1, the third sub-pixel SP3, and the fourth sub-pixel SP4 can be configured not to include the non-aperture dam portion NBA; and the color filter extension CFE of the first sub-pixel SP1 can be configured to overlap with the emitting area EA2 of the second sub-pixel SP2, thereby optimizing the aperture ratio and reflected color of the emitting areas EA1, EA2, EA3, and EA4 while minimizing or reducing additional masking processes. Therefore, the light-emitting display device according to another embodiment of the present invention can improve the reflectivity non-uniformity that fluctuates due to the absence of a polarizer, improve light efficiency, and improve reflected color and visual perception.

[0103] Figure 10 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention. Figure 11 According to another embodiment of the present invention, along Figure 10 The cross-sectional view taken from line IV-IV' in the diagram. Figure 10 and Figure 11 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 9 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 10 and Figure 11 In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0104] like Figure 10 and Figure 11 As shown, a light-emitting display device according to another embodiment of the present invention may further include a non-aperture dam NBA, which is configured such that at least a portion of the dam BA of each of the plurality of sub-pixels SP1, SP2, SP3 and SP4 extends in a first direction (or the X-axis direction) to define a non-aperture region NOA of the pixel electrode AE. For example, the non-aperture dam NBA may be disposed between the pixel electrode AE ​​and the organic light-emitting layer EL.

[0105] The non-aperture dam portion NBA can be disposed parallel to multiple sub-pixels SP1, SP2, SP3, and SP4 in a first direction (or X-axis direction). That is, the non-aperture dam portion NBA can be disposed parallel to the multiple sub-pixels SP1, SP2, SP3, and SP4 in the first direction (or X-axis direction). For example, the non-aperture dam portion NBA can be configured to overlap with the central portion of the pixel electrode AE ​​in a second direction (or Y-axis direction) intersecting the first direction. For example, the non-aperture dam portion NBA can cover a portion of the pixel electrode AE, thereby reducing the aperture ratio of the light-emitting portion. Furthermore, the non-aperture dam portion NBA can reduce the unit reflectivity of the light-emitting area by absorbing a portion of the internal light that passes through the pixel electrode AE ​​and is reflected again by the common electrode CE. Additionally, the non-aperture dam portion NBA can be disposed in the central portion of the light-emitting areas EA1, EA2, EA3, and EA4. As a result, the influence of process deviations can be minimized, the average reflectivity of each of the sub-pixels SP1, SP2, SP3, and SP4 can be optimized, and correspondingly, the reflectivity non-uniformity caused by process deviations can be improved.

[0106] According to another embodiment of the invention, the non-aperture embankment NBA of a plurality of sub-pixels SP1, SP2, SP3, and SP4 can extend across the light-emitting regions EA1, EA2, EA3, and EA4 of the sub-pixels SP1, SP2, SP3, and SP4, and is configured to define the non-aperture region NOA of the corresponding pixel electrode AE. As a result, the aperture ratio of the light-emitting regions EA1, EA2, EA3, and EA4 can be optimized while minimizing or reducing additional masking processes. Therefore, the light-emitting display device according to an embodiment of the invention can reduce the increased reflectivity due to the absence of a polarizer and improve light efficiency.

[0107] Figure 12 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention. Figure 13 According to another embodiment of the present invention, along Figure 12 The cross-sectional view taken from line V-V' in the diagram. Figure 12 and Figure 13 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 11 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 12 and Figure 13 In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0108] like Figure 12 and Figure 13As shown, a light-emitting display device according to another embodiment of the present invention may further include a non-aperture dam NBA, which is configured such that at least a portion of the dam BA of each of the plurality of sub-pixels SP1, SP2, SP3 and SP4 extends in a first direction (or the X-axis direction) to define a non-aperture region NOA of the pixel electrode AE. For example, the non-aperture dam NBA may be disposed between the pixel electrode AE ​​and the organic light-emitting layer EL.

[0109] The second sub-pixel SP2 among the plurality of sub-pixels SP1, SP2, SP3 and SP4 can be a white sub-pixel in which no color filter is provided, and the non-opening embankment NBA of the second sub-pixel SP2 can be configured to overlap with at least a portion of the color filter extension CFE extending from the color filters CF1 and CF3 of at least the adjacent sub-pixels SP1 and SP3.

[0110] The non-aperture embankment NBA of the second sub-pixel SP2 may include a first non-aperture embankment NBAa and a second non-aperture embankment NBAb spaced apart from each other in a second direction, with a color filter extension CFE between them. For example, the first non-aperture embankment NBAa may be configured to overlap one side of the color filter extension CFE in the second direction, and the second non-aperture embankment NBAb may be configured to overlap the other side of the color filter extension CFE in the second direction. For example, the color filter extension CFE may be formed by extending from the color filter CF1 of the first sub-pixel SP1, and may be configured to overlap the central portion of the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2 in the second direction (or the Y-axis direction). For example, the color filter extension CFE may be configured such that the second sub-pixel SP2 has a reflectivity equal to or lower than that of each of the other sub-pixels SP1, SP3, and SP4. For example, with respect to the second direction (or the Y-axis direction), the first non-aperture embankment NBAa and the second non-aperture embankment NBAb may be configured to have a linewidth equal to or lower than that of the color filter extension CFE. Furthermore, the first non-opening sub-dike portion NBAa and the second non-opening sub-dike portion NBAb can be configured to cover the edge portion of the color filter extension CFE, thereby minimizing the reflectivity variation caused by the thickness difference between the center and edge portions of the color filter extension CFE. According to another embodiment of the invention, the color filter extension CFE, having a lower reflectivity than the second sub-pixel SP2, can be disposed at the center portion of the light-emitting area EA2 of the second sub-pixel SP2, and the first non-opening sub-dike portion NBAa and the second non-opening sub-dike portion NBAb can be configured to overlap with one side and the other side of the color filter extension CFE. As a result, the effects of linewidth variation and process deviations in the color filter extension CFE can be minimized, thereby optimizing the average reflectivity of the second sub-pixel SP2 and correspondingly improving the reflectivity non-uniformity caused by process deviations.

[0111] According to another embodiment of the present invention, the non-aperture embankment NBA of a plurality of sub-pixels SP1, SP2, SP3 and SP4 may extend across the light-emitting areas EA1, EA2, EA3 and EA4 of the sub-pixels SP1, SP2, SP3 and SP4, and define the non-aperture area NOA of the corresponding pixel electrode AE. A color filter extension CFE having a lower reflectivity than that of the second sub-pixel SP2 may be disposed in the light-emitting area EA2 of the second sub-pixel SP2, and the first non-aperture embankment NBAa and the second non-aperture embankment NBAb may be configured to overlap with one side and the other side of the color filter extension CFE. For example, the first non-aperture embankment NBAa and the second non-aperture embankment NBAb may be configured to have a linewidth smaller than that of the color filter extension CFE in a second direction, and may reduce the reflectivity variation caused by the thickness difference between the central portion and the edge portion of the color filter extension CFE. As a result, the aperture ratios of the light-emitting regions EA1, EA2, EA3, and EA4 can be optimized while minimizing the addition of mask processes, the average reflectivity of the second sub-pixel SP2 can be optimized, and correspondingly, the reflectivity non-uniformity caused by process deviations can be improved. Therefore, the light-emitting display device according to another embodiment of the present invention can reduce the increase in reflectivity due to the absence of a polarizer, improve reflectivity non-uniformity, increase light efficiency, and improve reflected color and visual perception.

[0112] Figure 14 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention. Figure 15 This is another exemplary embodiment of the present invention. Figure 14 The cross-sectional view taken from line VI-VI' in the diagram. Figure 14 and Figure 15 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 13 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 14 and Figure 15 In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0113] like Figure 14 and Figure 15 As shown, the light-emitting display device according to another embodiment of the present invention may further include a non-aperture dam NBA, which is configured such that at least a portion of the dam BA of each of the plurality of sub-pixels SP1, SP2, SP3 and SP4 extends in a first direction (or the X-axis direction) to define a non-aperture region NOA of the pixel electrode AE. For example, the non-aperture dam NBA may be disposed between the pixel electrode AE ​​and the organic light-emitting layer EL.

[0114] Each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 may include a non-aperture dam NBA that is spaced apart from each other in a second direction, with a central portion of a pixel electrode AE ​​between them. For example, the first non-aperture dam NBAa and the second non-aperture dam NBAb may be arranged parallel to each other in a first direction. For example, the first non-aperture dam NBAa and the second non-aperture dam NBAb may be disposed on the pixel electrode AE ​​of the plurality of sub-pixels SP1, SP2, SP3, and SP4, and may overlap with at least one of the color filters CF1, CF3, and CF4. For example, as Figure 15 As shown, the first non-opening sub-dike portion NBAa and the second non-opening sub-dike portion NBAb can be disposed on the pixel electrode AE ​​of the first sub-pixel SP1 and can overlap with the color filter CF1 of the first sub-pixel SP1.

[0115] The second sub-pixel SP2 among the plurality of sub-pixels SP1, SP2, SP3, and SP4 can be a white sub-pixel in which no color filter is provided, and at least a portion of the first color filter CF1 of the first sub-pixel SP1 can extend in a first direction and be configured to overlap with the second sub-pixel SP2. A color filter extension CFE extending from the first color filter CF1 of the first sub-pixel SP1 can be disposed between the first non-opening sub-dike portion NBAa and the second non-opening sub-dike portion NBAb. For example, the color filter extension CFE can be formed by extending from the color filter CF1 of the first sub-pixel SP1 and can be configured to overlap with the central portion of the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2 in a second direction (or the Y-axis direction). For example, the color filter extension CFE can be configured such that the second sub-pixel SP2 has a reflectance equal to or lower than that of each of the other sub-pixels SP1, SP3, and SP4. For example, the first non-opening sub-dike portion NBAa and the second non-opening sub-dike portion NBAb can be configured to have a linewidth equal to or less than the linewidth of the color filter extension CFE in the second direction (or the Y-axis direction). Furthermore, the first non-opening sub-dike portion NBAa and the second non-opening sub-dike portion NBAb can be configured to cover the edge portion of the color filter extension CFE, thereby minimizing the reflectivity variation caused by the thickness difference between the center and edge portions of the color filter extension CFE. According to another embodiment of the invention, a color filter extension CFE having a reflectivity lower than that of the second sub-pixel SP2 can be disposed at the light-emitting area EA2 of the second sub-pixel SP2, and the first non-opening sub-dike portion NBAa and the second non-opening sub-dike portion NBAb can be configured to overlap with one side and the other side of the color filter extension CFE. As a result, the effects of linewidth variation and process deviation of the color filter extension CFE can be minimized, and the reflectivity variation caused by the thickness difference between the center and edge portions of the color filter extension CFE can also be minimized, thereby optimizing the average reflectivity of the second sub-pixel SP2 and correspondingly improving the reflectivity non-uniformity caused by process deviation.

[0116] According to another embodiment of the present invention, a first non-aperture sub-dike portion NBAa and a second non-aperture sub-dike portion NBAb in a plurality of sub-pixels SP1, SP2, SP3, and SP4 may extend across the light-emitting regions EA1, EA2, EA3, and EA4 of the sub-pixels SP1, SP2, SP3, and SP4, and define a plurality of non-aperture regions NOA on the corresponding pixel electrode AE. The plurality of non-aperture regions NOA are spaced apart from each other in a second direction and arranged parallel to each other in a first direction. A color filter extension CFE having a lower reflectance than that of the second sub-pixel SP2 may be disposed in the light-emitting region EA2 of the second sub-pixel SP2, and the first non-aperture sub-dike portion NBAa and the second non-aperture sub-dike portion NBAb may be configured to overlap with one side and the other side of the color filter extension CFE. As a result, the aperture ratio of the light-emitting regions EA1, EA2, EA3, and EA4 can be optimized while minimizing the addition of mask processes, the average reflectance of the second sub-pixel SP2 can be optimized, and correspondingly, the reflectance non-uniformity caused by process deviations can be improved. Therefore, the light-emitting display device according to another embodiment of the present invention can reduce the increase in reflectivity due to the absence of a polarizer, improve reflectivity non-uniformity, increase light efficiency, and improve reflected color and visual perception.

[0117] Figure 16 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention. Figure 17 This is another exemplary embodiment of the present invention. Figure 16 The cross-sectional view taken from line VII-VII' in the diagram. Figure 16 and Figure 17 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 15 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 16 and Figure 17 In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0118] like Figure 16 and Figure 17 As shown, the light-emitting display device according to another embodiment of the present invention may further include a non-aperture dam NBA, wherein at least a portion of the dam BA of the second sub-pixel SP2 extends in a first direction to define a non-aperture region NOA of the pixel electrode AE.

[0119] The non-opening embankment portion NBA can be located in the second sub-pixel SP2, instead of in the first sub-pixel SP1, the third sub-pixel SP3, and the fourth sub-pixel SP4. Therefore, the light-emitting area EA2 of the second sub-pixel SP2 can be configured to have a smaller area than each of the light-emitting areas EA1, EA3, and EA4 of the other sub-pixels SP1, SP3, and SP4.

[0120] At least a portion of the first color filter CF1 of the first sub-pixel SP1 may extend in a first direction and be configured to overlap with the central portion of the pixel electrode AE ​​of the second sub-pixel SP2. A color filter extension CFE extending from the first color filter CF1 may be configured to overlap with a non-aperture dam NBA disposed in the second sub-pixel SP2. For example, the non-aperture dam NBA of the second sub-pixel SP2 may be configured to overlap with the central portion of the color filter extension CFE of the first color filter CF1 in a second direction. For example, the color filter extension CFE may be formed by extending from the color filter CF1 of the first sub-pixel SP1 and may be configured to overlap with the central portion of the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2 in a second direction (or the Y-axis direction), and have a width greater than the width of the non-aperture dam NBA of the second sub-pixel SP2. For example, the color filter extension CFE may be configured such that the second sub-pixel SP2 has a reflectance equal to or lower than that of each of the other sub-pixels SP1, SP3, and SP4. According to another embodiment of the invention, a color filter extension CFE having a lower reflectance than the second sub-pixel SP2 can be disposed in the light-emitting area EA2 of the second sub-pixel SP2, and a non-opening embankment NBA can be disposed to overlap with the central portion of the color filter extension CFE. As a result, the effects of linewidth variation and process deviation of the color filter extension CFE can be minimized, thereby optimizing the average reflectance of the second sub-pixel SP2 and correspondingly improving the reflectance non-uniformity caused by process deviation.

[0121] According to another embodiment of the present invention, the non-aperture dam portion NBA of the second sub-pixel SP2 may extend across the light-emitting region EA2 of the second sub-pixel SP2, and defines a non-aperture region NOA at the center portion of the pixel electrode AE ​​of the second sub-pixel SP2. A color filter extension CFE having a lower reflectance than the second sub-pixel SP2 may be disposed in the light-emitting region EA2 of the second sub-pixel SP2, and the non-aperture dam portion NBA may be configured to overlap with the center portion of the color filter extension CFE. As a result, the aperture ratio of the light-emitting regions EA1, EA2, EA3, and EA4 can be optimized while minimizing the addition of mask processes, the average reflectance of the second sub-pixel SP2 can be optimized, and correspondingly, the reflectance non-uniformity caused by process deviations can be improved. Therefore, the light-emitting display device according to another embodiment of the present invention can reduce the increase in reflectance due to the absence of a polarizer, improve the reflectance non-uniformity, improve light efficiency, and improve reflected color and visual perception.

[0122] Figure 18 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention. Figure 19 This is another exemplary embodiment of the present invention. Figure 18The cross-sectional view taken from line VIII-VIII' in the diagram. Figure 18 and Figure 19 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 17 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 18 and Figure 19 In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0123] like Figure 18 and Figure 19 As shown, in another embodiment of the light-emitting display device according to the present invention, at least one sub-pixel SP2 can be configured such that the color filters CF1, CF3 of at least one other sub-pixel SP1, SP3 adjacent to at least one sub-pixel SP2 extend in a first direction and overlap with the opening region OA of the pixel electrode AE. For example, the third color filter CF3 of the third sub-pixel SP3 can extend in the first direction and be configured to overlap with the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2. The color filter extension CFE extending from the third color filter CF3 can be configured to overlap with both the non-opening region NOA and the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2. For example, the color filter extension CFE can be formed by extending from the color filter CF3 of the third sub-pixel SP3 and can be configured to overlap with the right edge of the pixel electrode AE ​​of the second sub-pixel SP2. For example, the color filter extension CFE can be configured such that the second sub-pixel SP2 has a reflectance equal to or lower than that of each of the other sub-pixels SP1, SP3 and SP4. According to another embodiment of the present invention, a color filter extension CFE having a lower reflectance than the second sub-pixel SP2 can be disposed in the light-emitting area EA2 of the second sub-pixel SP2. As a result, the influence of linewidth variation and process deviation of the color filter extension CFE can be minimized, thereby optimizing the average reflectance of the second sub-pixel SP2 and correspondingly improving the reflectance non-uniformity caused by process deviation.

[0124] According to another embodiment of the present invention, a color filter extension CFE having a lower reflectance than that of the second sub-pixel SP2 can be disposed in the light-emitting region EA2 of the second sub-pixel SP2, and the color filter extension CFE can be configured to overlap with the right edge of the pixel electrode AE ​​of the second sub-pixel SP2. As a result, the aperture ratio of the light-emitting regions EA1, EA2, EA3, and EA4 can be optimized while minimizing the addition of mask processing, the average reflectance of the second sub-pixel SP2 can be optimized, and correspondingly, the reflectance non-uniformity caused by process deviations can be improved. Therefore, the light-emitting display device according to another embodiment of the present invention can reduce the increase in reflectance due to the absence of a polarizer, improve the reflectance non-uniformity, improve light efficiency, and improve reflected color and visual perception.

[0125] Figure 20 The diagram illustrates a dam and a color filter for a pixel according to another exemplary embodiment of the present invention. Figure 21 This is another exemplary embodiment of the present invention. Figure 20 The cross-sectional view taken from line IX to IX' in the diagram. Figure 20 and Figure 21 Embodiments of the present invention are shown, wherein, with reference to Figures 1 to 19 The configuration of the embankment and color filter is modified in the described light-emitting display device. See the following reference... Figure 20 and Figure 21 In the description, except for the modified configuration, the same reference numerals will be used for the same components, and their redundant descriptions will be omitted or given briefly.

[0126] like Figure 20 and Figure 21 As shown, the second sub-pixel SP2 of the light-emitting display device according to another embodiment of the present invention may further include a non-opening sub-dike portion NBA, which is spaced apart from the adjacent dike portion BA in a first direction and extends in a second direction.

[0127] The non-aperture sub-dam portion NBA can be located in the second sub-pixel SP2, but not in the first sub-pixel SP1, third sub-pixel SP3, and fourth sub-pixel SP4. For example, the non-aperture sub-dam portion NBA can be located on the pixel electrode AE ​​of the second sub-pixel SP2, and can define a non-aperture region NOA of the pixel electrode AE ​​of the second sub-pixel SP2. The non-aperture region NOA is spaced apart from the dam portion BA between the second sub-pixel SP2 and the third sub-pixel SP3 in the second direction (or the Y-axis direction) and extends in the second direction. As a result, the light-emitting region EA2 of the second sub-pixel SP2 can have a smaller area than each of the light-emitting regions EA1, EA3, and EA4 of the first sub-pixel SP1, third sub-pixel SP3, and fourth sub-pixel SP4.

[0128] The third color filter CF3 of the third sub-pixel SP3, adjacent to the second sub-pixel SP2, may extend in the first direction and is configured to overlap with the opening region OA of the pixel electrode AE ​​of the second sub-pixel SP2. The non-opening sub-dike portion NBA of the second sub-pixel SP2 may be configured to overlap with the color filter extension CFE extending from the third color filter CF3. For example, the color filter extension CFE may be formed by extending from the color filter CF3 of the third sub-pixel SP3 and may be configured to overlap with the right edge of the non-opening sub-dike portion NBA and the pixel electrode AE ​​of the second sub-pixel SP2. For example, the color filter extension CFE may be configured such that the second sub-pixel SP2 has a reflectance equal to or lower than that of each of the other sub-pixels SP1, SP3, and SP4. According to another embodiment of the invention, a color filter extension CFE having a reflectance lower than that of the second sub-pixel SP2 may be provided at the light-emitting region EA2 of the second sub-pixel SP2. As a result, the effects of linewidth variation and process deviation in the color filter extension CFE can be minimized, thereby optimizing the average reflectance of the second sub-pixel SP2 and correspondingly improving the reflectance non-uniformity caused by process deviation.

[0129] According to another embodiment of the present invention, the non-aperture sub-dam portion NBA of the second sub-pixel SP2 may be defined within the light-emitting area EA2 of the second sub-pixel SP2, extending along a second direction (or the Y-axis direction) into the non-aperture area NOA of the pixel electrode AE ​​of the second sub-pixel SP2. A color filter extension CFE having a lower reflectance than that of the second sub-pixel SP2 may be disposed in the light-emitting area EA2 of the second sub-pixel SP2, and the color filter extension CFE may be configured to overlap with the right edge of the non-aperture sub-dam portion NBA and the pixel electrode AE ​​of the second sub-pixel SP2. As a result, while minimizing the additional mask process, the aperture ratio of the light-emitting areas EA1, EA2, EA3, and EA4 can be optimized, the average reflectance of the second sub-pixel SP2 can be optimized, and correspondingly, the reflectance variation rate caused by process deviations can be improved. Therefore, the light-emitting display device according to another embodiment of the present invention can reduce the increase in reflectance due to the absence of a polarizer, improve the reflectance variation rate, improve light efficiency, and improve reflected color and visual perception.

[0130] The following describes a light-emitting display device according to one or more exemplary embodiments of the present invention.

[0131] A light-emitting display device according to one or more embodiments of the present invention may include: a substrate including a plurality of sub-pixels arranged along a first direction, each of the plurality of sub-pixels including a light-emitting region and a non-light-emitting region; at least one thin-film transistor disposed in the non-light-emitting region on the substrate; at least one protective layer disposed on the at least one thin-film transistor; and at least one color filter disposed on at least one of the protective layers of at least some of the plurality of sub-pixels, wherein each of the plurality of sub-pixels may include a pixel electrode, a light-emitting layer, a common electrode and a dam for defining an opening region of the pixel electrode, and at least one of the plurality of sub-pixels may be configured such that at least a portion of the color filter of at least one other sub-pixel adjacent to the at least one sub-pixel extends in the first direction and overlaps with the opening region of the pixel electrode of the at least one sub-pixel.

[0132] According to one or more embodiments of the present invention, the embankment may include at least one of a light-absorbing material and a black material.

[0133] According to one or more embodiments of the present invention, the at least one sub-pixel may be a white sub-pixel in which the at least one color filter is not provided, and the extension of the color filter of the at least one other sub-pixel may be configured to overlap with the opening area of ​​the pixel electrode of the at least one sub-pixel.

[0134] According to one or more embodiments of the present invention, the extension may be configured to overlap with the central portion of the opening region of the pixel electrode in a second direction intersecting the first direction.

[0135] According to one or more embodiments of the present invention, the extension may be configured such that the at least one sub-pixel has a reflectivity equal to or lower than that of the at least one other sub-pixel.

[0136] According to one or more embodiments of the present invention, the extension may be configured to reduce the reflectivity non-uniformity of the at least one sub-pixel.

[0137] According to one or more embodiments of the present invention, the at least one other sub-pixel may include at least one of a red sub-pixel and a blue sub-pixel.

[0138] According to one or more embodiments of the present invention, each of the plurality of sub-pixels may further include a non-opening dam portion, the non-opening dam portion being configured such that at least a portion of the dam portion extends in the first direction to define a non-opening region of the pixel electrode.

[0139] According to one or more embodiments of the present invention, the non-opening embankment may be disposed between the pixel electrode and the light-emitting layer.

[0140] According to one or more embodiments of the present invention, the non-opening embankment may be arranged parallel to the plurality of sub-pixels in the first direction.

[0141] According to one or more embodiments of the present invention, the non-opening embankment may be configured to overlap with the central portion of the pixel electrode in a second direction intersecting the first direction.

[0142] According to one or more embodiments of the present invention, the at least one sub-pixel may be a white sub-pixel in which the at least one color filter is not provided, and the non-opening embankment of the at least one sub-pixel may be configured to overlap with at least a portion of the extension of the color filter of the at least one other sub-pixel.

[0143] According to one or more embodiments of the present invention, the non-opening embankment of the at least one sub-pixel may include a first non-opening sub-embankment and a second non-opening sub-embankment spaced apart from each other in a second direction intersecting the first direction, with the extension between the first non-opening sub-embankment and the second non-opening sub-embankment.

[0144] According to one or more embodiments of the present invention, the first non-opening sub-dike portion may be configured to overlap with one side of the extension in the second direction, and the second non-opening sub-dike portion may be configured to overlap with the other side of the extension in the second direction.

[0145] According to one or more embodiments of the present invention, the non-opening dam portion of each of the plurality of sub-pixels may include a first non-opening sub-dam portion and a second non-opening sub-dam portion spaced apart from each other in a second direction intersecting the first direction, with a central portion of the pixel electrode between the first non-opening sub-dam portion and the second non-opening sub-dam portion.

[0146] According to one or more embodiments of the present invention, the first non-opening sub-dike portion and the second non-opening sub-dike portion may be arranged parallel to each other in the first direction.

[0147] According to one or more embodiments of the present invention, the extension of the color filter of the at least one other sub-pixel may be disposed between the first non-opening sub-dike portion and the second non-opening sub-dike portion.

[0148] According to one or more embodiments of the present invention, the non-opening embankment of the at least one sub-pixel may be configured to overlap with the central portion of the extension in a second direction intersecting the first direction.

[0149] According to one or more embodiments of the present invention, the dam disposed between the plurality of sub-pixels may extend toward the central portion of the pixel electrode in the first direction and may be configured to define a non-opening region of the pixel electrode.

[0150] According to one or more embodiments of the present invention, the at least one sub-pixel may be a white sub-pixel in which the at least one color filter is not provided, and the extension of the color filter of the at least one other sub-pixel may be configured to overlap with both the non-opening region and the opening region of the pixel electrode of the at least one sub-pixel.

[0151] According to one or more embodiments of the present invention, the at least one sub-pixel may further include a non-opening sub-dike portion extending in a second direction intersecting the first direction, the non-opening sub-dike portion being spaced apart from adjacent dike portions in the first direction.

[0152] According to one or more embodiments of the present invention, the non-opening sub-dike portion may be configured to overlap with the extension portion.

[0153] According to one or more embodiments of the present invention, the light-emitting display device may further include a transmittance control film disposed on the rear surface of the substrate.

[0154] According to one or more embodiments of the present invention, the transmittance control film may include at least one of a transparent film and a photoadsorption film.

[0155] The features, structures, and effects described above in the present invention are included in at least one embodiment of the invention, but are not limited to only one embodiment. Furthermore, the features, structures, and effects described in at least one embodiment of the present invention can be implemented by those skilled in the art through combination or modification of other embodiments. Therefore, anything associated with combination and modification should be interpreted as being within the scope of the present invention.

[0156] It will be apparent to those skilled in the art that various modifications and variations can be made to this invention without departing from its spirit or scope. Therefore, this invention is intended to cover modifications and variations that fall within the scope of the appended claims and their equivalents.

Claims

1. A light-emitting display device, comprising: A substrate, the substrate comprising a plurality of sub-pixels arranged along a first direction, each of the plurality of sub-pixels comprising a light-emitting area and a non-light-emitting area; At least one thin-film transistor, the at least one thin-film transistor being disposed in a non-light-emitting region on the substrate; At least one protective layer is disposed on the at least one thin-film transistor; as well as At least one color filter, said at least one color filter being disposed on at least one protective layer of at least some of the plurality of sub-pixels. Each of the plurality of sub-pixels includes a pixel electrode, a light-emitting layer, a common electrode, and a dam for defining an opening region of the pixel electrode. At least one of the plurality of sub-pixels is configured such that at least a portion of the color filter of at least one other sub-pixel adjacent to the at least one sub-pixel extends in the first direction and overlaps with the opening region of the pixel electrode of the at least one sub-pixel.

2. The light-emitting display device according to claim 1, wherein the embankment comprises at least one of a light-absorbing material and a black material.

3. The light-emitting display device according to claim 1, wherein the at least one sub-pixel is a white sub-pixel in which the at least one color filter is not disposed. The extension of the color filter of the at least one other sub-pixel is configured to overlap with the opening region of the pixel electrode of the at least one sub-pixel.

4. The light-emitting display device according to claim 3, wherein the extension is configured to overlap with the central portion of the opening region of the pixel electrode in a second direction intersecting the first direction.

5. The light-emitting display device according to claim 3, wherein the extension is configured such that the at least one sub-pixel has a reflectivity equal to or lower than that of the at least one other sub-pixel.

6. The light-emitting display device according to claim 3, wherein the extension is configured to reduce the reflectivity non-uniformity of the at least one sub-pixel.

7. The light-emitting display device according to claim 3, wherein the at least one other sub-pixel includes at least one of a red sub-pixel and a blue sub-pixel.

8. The light-emitting display device of claim 1, wherein each of the plurality of sub-pixels further comprises a non-opening dam portion, the non-opening dam portion being configured such that at least a portion of the dam portion extends in the first direction to define a non-opening region of the pixel electrode.

9. The light-emitting display device according to claim 8, wherein the non-opening embankment is disposed between the pixel electrode and the light-emitting layer.

10. The light-emitting display device according to claim 8, wherein the non-opening embankment is disposed parallel to the plurality of sub-pixels in the first direction.

11. The light-emitting display device of claim 10, wherein the non-opening embankment is configured to overlap with the central portion of the pixel electrode in a second direction intersecting the first direction.

12. The light-emitting display device according to claim 8, wherein the at least one sub-pixel is a white sub-pixel in which the at least one color filter is not disposed. The non-opening embankment of the at least one sub-pixel is configured to overlap with at least a portion of the extension of the color filter of the at least one other sub-pixel.

13. The light-emitting display device according to claim 12, wherein the non-aperture portion of the at least one sub-pixel includes a first non-aperture sub-aperture and a second non-aperture sub-aperture spaced apart from each other in a second direction intersecting the first direction, and the extension is provided between the first non-aperture sub-aperture and the second non-aperture sub-aperture.

14. The light-emitting display device according to claim 13, wherein the first non-opening sub-embankment is configured to overlap one side of the extension in the second direction. The second non-opening sub-dike portion is configured to overlap with the other side of the extension in the second direction.

15. The light-emitting display device of claim 8, wherein each of the plurality of sub-pixels includes a first non-opening sub-dike and a second non-opening sub-dike spaced apart from each other in a second direction intersecting the first direction, and a central portion of the pixel electrode is located between the first non-opening sub-dike and the second non-opening sub-dike.

16. The light-emitting display device according to claim 15, wherein the first non-opening sub-dike portion and the second non-opening sub-dike portion are arranged parallel to each other in the first direction.

17. The light-emitting display device according to claim 16, wherein the extension of the color filter of the at least one other sub-pixel is disposed between the first non-opening sub-dike portion and the second non-opening sub-dike portion.

18. The light-emitting display device according to claim 12, wherein the non-opening embankment of the at least one sub-pixel is configured to overlap with the central portion of the extension in a second direction intersecting the first direction.

19. The light-emitting display device of claim 1, wherein the embankment disposed between the plurality of sub-pixels extends toward the central portion of the pixel electrode in the first direction and is configured to define a non-opening region of the pixel electrode.

20. The light-emitting display device according to claim 19, wherein the at least one sub-pixel is a white sub-pixel in which the at least one color filter is not disposed. The extension of the color filter of the at least one other sub-pixel is configured to overlap with both the non-aperture and aperture regions of the pixel electrode of the at least one sub-pixel.

21. The light-emitting display device of claim 20, wherein the at least one sub-pixel further includes a non-opening sub-dike extending in a second direction intersecting the first direction, the non-opening sub-dike being spaced apart from adjacent dikes in the first direction.

22. The light-emitting display device according to claim 21, wherein the non-opening sub-embankment is configured to overlap with the extension.

23. The light-emitting display device according to claim 1 further includes a transmittance control film disposed on the rear surface of the substrate.

24. The light-emitting display device according to claim 23, wherein the transmittance control film comprises at least one of a transparent film and a light-absorbing film.

Images