Display device and electronic device

Abstract

The invention discloses a display device and an electronic device. The display device may include: a display area including a first pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel; a first light emitting element included in the first sub-pixel; a second light emitting element included in the second sub-pixel; and a third light emitting element included in the third sub-pixel. The first light-emitting element may include a (1-1)-th electrode, the second light-emitting element may include a (1-2)-th electrode, and the third light-emitting element may include a (1-3)-th electrode. The 1-1 electrode may be spaced apart from the 1-2 electrode by a 2-1 distance, and the 1-2 electrode may be spaced apart from the 1-3 electrode by a 2-2 distance equal to the 2-1 distance.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2024-0093662, filed on July 16, 2024, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the disclosure relate generally to a display device and an electronic device. BACKGROUND

[0003] As information technology develops, the importance of a display device, which is a medium for connecting a user and information, increases. Accordingly, research and development of display devices have been continuously conducted.

[0004] Generally, a display device includes a plurality of pixels that display an image. Each of the pixels can include an image display element (e.g., a light emitting element) disposed in a pixel area, and the image display element can generate a set light or a predetermined light, thereby displaying an image.

[0005] Recently, a display device including a light conversion layer has been developed to improve color purity. The light conversion layer can be above a light emitting element, and at least some of the light conversion layer converts light generated by the light emitting element into light having another wavelength. At least some of the light conversion layer includes a quantum dot to convert the wavelength of light. SUMMARY

[0006] Embodiments of the disclosure provide a display device capable of simplifying a manufacturing process of the display device and securing an edge area for forming a light conversion layer including a quantum dot.

[0007] According to an aspect of an embodiment of the disclosure, there is provided a display device including a display area including a first pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel; a first light emitting element included in the first sub-pixel; a second light emitting element included in the second sub-pixel; and a third light emitting element included in the third sub-pixel, wherein the first light emitting element includes a 1-1 electrode, the second light emitting element includes a 1-2 electrode, and the third light emitting element includes a 1-3 electrode, and wherein the 1-1 electrode is separated from the 1-2 electrode by a 2-1 distance, and the 1-2 electrode is separated from the 1-3 electrode by a 2-2 distance equal to the 2-1 distance.

[0008] Each of the 1-1 electrode, the 1-2 electrode, and the 1-3 electrode can be an anode electrode. The 1-1 electrode, the 1-2 electrode, and the 1-3 electrode can each have the same shape.

[0009] The 1-1 electrode, the 1-2 electrode, and the 1-3 electrode can each have the same area in a plan view.

[0010] The display apparatus can further include a light conversion layer including: a first color conversion layer over the first light emitting element; a second color conversion layer over the second light emitting element; and a transmission layer over the third light emitting element. The first color conversion layer and the second color conversion layer can each have a shape that is point-symmetrical to each other.

[0011] The first color conversion layer can include: a 1-1 portion extending in the first direction and the second direction; a 1-2 portion extending from the 1-1 portion in the second direction; and a 1-3 portion extending from the 1-2 portion in the second direction. The 1-2 portion can have a width that widens in the second direction. Each of the first color conversion layer and the second color conversion layer can each have a shape that is line-symmetrical in a plan view with respect to a line extending in the second direction.

[0012] The first color conversion layer can include: a 1-1 portion extending in the first direction and the second direction; and a 1-2 portion extending from the 1-1 portion in the second direction. The 1-2 portion can have a width that is wider than and constant with a width of the 1-1 portion, or have a width that widens in the second direction. Each of the first color conversion layer and the second color conversion layer can have a shape that is line-symmetrical in a plan view with respect to a line extending in the second direction.

[0013] The display apparatus can further include: a pixel circuit layer including a pixel circuit; a first contact hole electrically connecting the first light emitting element and the pixel circuit layer to each other; a second contact hole electrically connecting the second light emitting element and the pixel circuit layer to each other; and a third contact hole electrically connecting the third light emitting element and the pixel circuit layer to each other. The first contact hole and the second contact hole can be separated from each other by a 1-1 distance, and the second contact hole and the third contact hole can be separated from each other by a 1-2 distance equal to the 1-1 distance.

[0014] The display apparatus can further include a spacer under the light conversion layer. The spacer can be between the second color conversion layer and the transmission layer in a plan view.

[0015] The display apparatus can further include: a second pixel disposed together with the first pixel in the first direction, the second pixel including a first adjacent sub-pixel, a second adjacent sub-pixel, and a third adjacent sub-pixel; and a spacer under the light conversion layer. The second pixel can include a first adjacent color conversion layer having the same structure as the first color conversion layer. The spacer can be between the transmission layer and the first adjacent color conversion layer in a plan view.

[0016] The display device can further include a light blocking layer on the light conversion layer. The light blocking layer can include: a first filter opening defining a first emission area; a second filter opening defining a second emission area; and a third filter opening defining a third emission area. The first emission area, the second emission area, and the third emission area can have respective areas different from each other in a plan view.

[0017] According to an embodiment of the present disclosure, there is provided a display device including: a display area including a first pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel; a first light emitting element included in the first sub-pixel; a second light emitting element included in the second sub-pixel; a third light emitting element included in the third sub-pixel; and a light conversion layer over the first light emitting element to the third light emitting element, wherein the light conversion layer includes a first color conversion layer, a second color conversion layer, and a transmission layer, wherein the first color conversion layer and the second color conversion layer each have a shape point-symmetric to each other in a plan view, and wherein each of the first color conversion layer and the second color conversion layer has a shape symmetric with respect to a line extending in one direction in the plan view.

[0018] The first light emitting element can include a 1-1 electrode, the second light emitting element can include a 1-2 electrode, and the third light emitting element can include a 1-3 electrode. The 1-1 electrode can be separated from the 1-2 electrode by a 2-1 distance, and the 1-2 electrode can be separated from the 1-3 electrode by a 2-2 distance equal to the 2-1 distance. Each of the 1-1 electrode, the 1-2 electrode, and the 1-3 electrode can be an anode electrode.

[0019] The display device can further include: a pixel circuit layer including a pixel circuit; a first contact hole electrically connecting the first light emitting element and the pixel circuit layer to each other; a second contact hole electrically connecting the second light emitting element and the pixel circuit layer to each other; and a third contact hole electrically connecting the third light emitting element and the pixel circuit layer to each other. The first contact hole and the second contact hole can be separated from each other by a 1-1 distance, and the second contact hole and the third contact hole can be separated from each other by a 1-2 distance equal to the 1-1 distance.

[0020] The first color conversion layer can include: a 1-1 portion having a short side in a direction perpendicular (e.g., substantially perpendicular) to the one direction and a long side in the one direction; a 1-2 portion having a trapezoidal shape with a width widened in the one direction; and a 1-3 portion extending from the 1-2 portion in the one direction.

[0021] The first color conversion layer can include a 1-1 portion having a short side in a direction perpendicular (e.g., substantially perpendicular) to the one direction and a long side in the one direction, and a 1-2 portion extending from the 1-1 portion in the one direction. The 1-2 portion can have a width wider than and constant from the 1-1 portion, or have a width widening in the one direction.

[0022] The display apparatus can further include a light blocking layer on the light conversion layer. The light blocking layer can include a first filter opening defining a first emission area, a second filter opening defining a second emission area, and a third filter opening defining a third emission area. At least a portion of the 1-2 portion and at least a portion of the 1-3 portion can not overlap the first emission area in a plan view.

[0023] The first filter opening, the second filter opening, and the third filter opening can have respective areas different from each other in a plan view.

[0024] At least a portion of the 1-2 portion and at least a portion of the 1-3 portion can be disposed at both sides of the first emission area in a plan view.

[0025] The display apparatus can further include a spacer under the light conversion layer. The spacer can be between the second color conversion layer and the transmissive layer in a plan view.

[0026] The display apparatus can further include a second pixel disposed together with the first pixel in a direction perpendicular (e.g., substantially perpendicular) to the one direction, the second pixel including a first adjacent sub-pixel, a second adjacent sub-pixel, and a third adjacent sub-pixel, and a spacer under the light conversion layer. The second pixel can include a first adjacent color conversion layer having the same structure as the first color conversion layer. The spacer can be between the transmissive layer and the first adjacent color conversion layer in a plan view.

[0027] An electronic apparatus includes a processor to provide input image data, and a display apparatus to display an image based on the input image data. The display apparatus includes a display area including a first pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel, a first light emitting element included in the first sub-pixel, a second light emitting element included in the second sub-pixel, and a third light emitting element included in the third sub-pixel, wherein the first light emitting element includes a 1-1 electrode, the second light emitting element includes a 1-2 electrode, and the third light emitting element includes a 1-3 electrode, and wherein the 1-1 electrode is separated from the 1-2 electrode by a 2-1 distance, and the 1-2 electrode is separated from the 1-3 electrode by a 2-2 distance equal to the 2-1 distance. BRIEF DESCRIPTION OF DRAWINGS

[0028] Example embodiments of the present disclosure will now be described more fully hereinafter with reference to the accompanying drawings; however, the subject matter of the present disclosure can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the example embodiments to those skilled in the art.

[0029] In the drawings, the size of some of the elements can be exaggerated relative to others for clarity. It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or an intervening element can also be present. Like reference numerals refer to like elements throughout.

[0030] Figure 1 is a schematic plan view showing a display device according to an embodiment of the present disclosure.

[0031] Figure 2 is a schematic plan view showing an arrangement of pixels according to an embodiment of the present disclosure.

[0032] Figure 3 is a sectional view showing a display device according to an embodiment of the present disclosure.

[0033] Figure 4 is an enlarged view showing a light conversion layer according to an embodiment of the present disclosure.

[0034] Figure 5 is a sectional view schematically showing a display device according to an embodiment of the present disclosure.

[0035] Figure 6 is a schematic plan view of a pixel according to a first embodiment of the present disclosure.

[0036] Figure 7 is a schematic plan view of a pixel according to a second embodiment of the present disclosure.

[0037] Figure 8 is a schematic plan view of a pixel according to a third embodiment of the present disclosure.

[0038] Figure 9 is a plan view schematically showing an arrangement of spacers according to an embodiment of the present disclosure.

[0039] Figure 10 is a plan view schematically showing an arrangement of spacers according to another embodiment of the present disclosure.

[0040] Figure 11 is a block diagram of an electronic device according to an embodiment.

[0041] Figure 12 schematic diagrams showing various embodiments of an electronic device. Detailed Implementation

[0042] The subject matter of this disclosure can be adapted to various suitable changes and different shapes; therefore, embodiments of this disclosure are shown in more detail with respect to specific examples. However, the examples are not limited to specific shapes and can be adapted to all suitable changes and equivalent materials and substitutions. The included drawings are shown in a manner that allows for a better understanding of the subject matter of this disclosure.

[0043] It will be understood that while the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. Therefore, the “first” element discussed below may also be referred to as the “second” element without departing from the spirit and scope of this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise.

[0044] It will also be understood that when the term "comprising" and / or variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, elements, and / or components, but does not preclude the presence and / or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Furthermore, expressions such as "on" or "above" another element, referring to the placement of an element such as a layer, region, substrate, or plate, indicate not only that the element is placed "directly" on or "straight above" the other element, but also that another element is placed between the two elements. Similarly, expressions such as "below" or "under" another element, referring not only that the element is placed "directly" below or "straight below" the other element, but also that another element is placed between the two elements.

[0045] This disclosure generally relates to a display device. Hereinafter, a display device according to embodiments of this disclosure will be described with reference to the accompanying drawings.

[0046] Figure 1 This is a schematic plan view illustrating a display device according to an embodiment of the present disclosure. Figure 2 This is a schematic plan view illustrating the arrangement of pixels according to an embodiment of the present disclosure.

[0047] Reference Figure 1 and Figure 2 A display panel (DP) (or display device (DD)) can display images. The display panel (DP) may include a light-emitting element (LD) (see...). Figure 5). A self-luminous display panel such as an organic light-emitting display panel (OLED panel) using an organic light-emitting diode as a light-emitting element, a micro-LED and / or nano-LED display panel using a micro-LED and / or nano-LED as a light-emitting element, and a quantum dot organic light-emitting display panel (QD OLED panel) using a quantum dot and an organic light-emitting diode can be used as the display panel DP. In an embodiment, a non-luminous display panel such as a liquid crystal display panel (LCD panel), an electrophoretic display panel (EPD panel), and / or an electro-wetting display panel (EWD panel) can be used as the display panel DP. When a non-luminous display panel is used as the display panel DP, the display device DD can include a backlight unit that supplies light to the display panel DP. However, the present disclosure is not limited to the specific examples. Hereinafter, in the present disclosure, an embodiment in which a quantum dot organic light-emitting display panel (QD OLED panel) is used as the display panel DP will be described, but the present disclosure is not limited thereto.

[0048] The display panel DP can include a substrate SUB and a pixel P on the substrate SUB.

[0049] The substrate SUB can include a transparent insulating material (e.g., a transparent electrically insulating material) to enable transmission of light therethrough. The substrate SUB can be a rigid substrate or a flexible substrate. The rigid substrate can be, for example, one selected from among a glass substrate, a quartz substrate, a glass-ceramic substrate, and a crystallized glass substrate.

[0050] The flexible substrate can be one selected from among a film substrate including a polymeric organic material and a plastic substrate. For example, the flexible substrate can include at least one selected from among polystyrene, polyvinyl alcohol, polymethyl methacrylate, polyether sulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, cellulose triacetate, and cellulose acetate propionate.

[0051] The display device DD (or the display panel DP) can have various suitable shapes. In an example, the display device DD can be provided in a rectangular shape, but the present disclosure is not limited thereto. For example, the display device DD can have a circular shape or an elliptical shape (e.g., a substantially circular shape or a substantially elliptical shape). Also, the display device DD can include an angular corner and / or a curved corner. For convenience, in Figure 1 hereinafter, the display device DD is shown to have a rectangular plate shape. Also, in Figure 1In the middle, the extending direction of the short side (e.g., the lateral direction) of the display device DD (or the horizontal direction as the "row" direction of the pixel P) is indicated as a first direction DR1, and the extending direction of the long side (e.g., the longitudinal direction) of the display device DD (or the "column" direction of the pixel P) is indicated as a second direction DR2. In an embodiment, the display direction of the display device DD or the normal line of the plane on which the substrate SUB is disposed is indicated as a third direction DR3.

[0052] The substrate SUB (or the display device DD) can include a display area DA for displaying an image and a peripheral area PA (or a non-display area) surrounding the display area DA (or in addition to the display area DA). The substrate SUB can include the display area DA including a pixel area in which respective pixels P are disposed, and the peripheral area PA disposed at a periphery of the display area DA (or adjacent to the display area DA).

[0053] The peripheral area PA can be adjacent to the display area DA. The peripheral area PA can be disposed at at least one side of the display area DA. In an example, the peripheral area PA can surround the periphery (e.g., the circumference or the edge) of the display area DA. In an example, the peripheral area PA can be a bezel area of the display device DD.

[0054] The pixel P can be disposed on the substrate SUB in the display area DA. The peripheral area PA can be disposed at the periphery of the display area DA. A structure for protecting components included in the pixel P disposed in the display area DA can be disposed in the peripheral area PA, but the present disclosure is not limited thereto. For example, a wire unit connected to the pixel P and a driving unit connected to the wire unit to drive the pixel P can be disposed in the peripheral area PA.

[0055] The pixel P can include a first pixel P1, a second pixel P2, a third pixel P3, and a fourth pixel P4. The first pixel P1, the second pixel P2, the third pixel P3, and the fourth pixel P4 can be disposed in the display area DA. The display area DA can include a first pixel area in which the first pixel P1 is disposed, a second pixel area in which the second pixel P2 is disposed, a third pixel area in which the third pixel P3 is disposed, and a fourth pixel area in which the fourth pixel P4 is disposed.

[0056] The second pixel P2 can be adjacent to the first pixel P1. For example, the second pixel P2 can be disposed together with the first pixel P1 in the first direction DR1. The third pixel P3 can be adjacent to the second pixel P2. For example, the third pixel P3 can be disposed together with the second pixel P2 in the second direction DR2. The fourth pixel P4 can be adjacent to the third pixel P3. For example, the fourth pixel P4 can be disposed together with the third pixel P3 in the first direction DR1. The first pixel P1, the second pixel P2, the third pixel P3, and the fourth pixel P4 can be disposed clockwise. In the disclosure, each of the first pixel P1, the second pixel P2, the third pixel P3, and the fourth pixel P4 can be disposed according to a stripe arrangement.

[0057] Each of the first pixel P1, the second pixel P2, the third pixel P3, and the fourth pixel P4 can include a plurality of sub-pixels SPX1, SPX2, and SPX3. The display area DA can include a first sub-pixel area in which the first sub-pixel SPX1 is disposed, a second sub-pixel area in which the second sub-pixel SPX2 is disposed, and a third sub-pixel area in which the third sub-pixel SPX3 is disposed. In an example, the first pixel P1 can include the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3. The first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 can be sequentially disposed in the first direction DR1. However, the disclosure is not limited thereto, and the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3 can be sequentially disposed in a second direction DR2 that crosses (e.g., intersects) the first direction DR1.

[0058] The first sub-pixel to the third sub-pixel SPX1, SPX2, and SPX3 can emit light of different colors. In an example, the first sub-pixel SPX1 can emit first light, the second sub-pixel SPX2 can emit second light, and the third sub-pixel SPX3 can emit third light. The first light can be light in a red color band, the second light can be light in a green color band, and the third light can be light in a blue color band. The red color band can be a band of about 600 nm to about 750 nm, the green color band can be a band of about 480 nm to about 560 nm, and the blue color band can be a band of about 370 nm to about 460 nm. However, embodiments of the disclosure are not limited thereto. The colors, kinds, and / or numbers of sub-pixels constituting a pixel P are not particularly limited. In an example, the colors of light emitted from each of the first sub-pixel to the third sub-pixel SPX1, SPX2, and SPX3 can be changed differently and as appropriate. Hereinafter, when the first sub-pixel to the third sub-pixel SPX1, SPX2, and SPX3 are inclusively designated, the first sub-pixel to the third sub-pixel SPX1, SPX2, and SPX3 can be designated as a pixel P.

[0059] Figure 3 is a cross-sectional view illustrating a display apparatus according to an embodiment of the disclosure. Figure 4 is an enlarged view illustrating a light conversion layer according to an embodiment of the disclosure. Figure 4 is an enlarged view illustrating a light conversion layer 120 (color conversion layers 120R and 120G and a transmissive layer 120B).

[0060] Referring to Figure 3 , a display apparatus DD can include a display unit DU and a color filter unit CU disposed while facing the display unit DU. The display unit DU can include first, second, and third sub-pixels SPX1, SPX2, and SPX3 on a substrate SUB. The first, second, and third sub-pixels SPX1, SPX2, and SPX3 can be pixels that emit different colors of light on the substrate SUB. For example, the first sub-pixel SPX1 can emit red light Lr, the second sub-pixel SPX2 can emit green light Lg, and the third sub-pixel SPX3 can emit blue light Lb.

[0061] The first, second, and third sub-pixels SPX1, SPX2, and SPX3 can include first, second, and third light emitting elements LD1, LD2, and LD3, respectively. In an embodiment, each of the first, second, and third light emitting elements LD1, LD2, and LD3 can emit blue light. In another embodiment, the first, second, and third light emitting elements LD1, LD2, and LD3 can emit red, green, and blue light, respectively.

[0062] The color filter unit CU can include filter portions 300R, 300G, and 300B. Light emitted from the first, second, and third light emitting elements LD1, LD2, and LD3 can be emitted as red, green, and blue light Lr, Lg, and Lb, respectively, while passing through the filter portions 300R, 300G, and 300B.

[0063] The filter portions 300R, 300G, and 300B can be disposed directly on / under the upper substrate 160. For example, the filter portions 300R, 300G, and 300B can be disposed under the upper substrate 160. The filter portions 300R, 300G, and 300B can include first color conversion layers 120R and a first filter layer 110R (see Figure 5 ), second color conversion layers 120G and a second filter layer 110G (see Figure 5 ), and a transmissive layer 120B and a third filter layer 110B (see Figure 5 ), respectively.

[0064] The term "directly disposed on / under the upper substrate 160" can mean that the color filter unit CU is manufactured by forming the first to third filter layers 110R, 110G and 110B on the upper substrate 160. Thereafter, the display unit DU and the color filter unit CU can be joined to each other by allowing the first to third filter layers 110R, 110G and 110B to respectively face the first, second and third sub-pixels SPX1, SPX2 and SPX3. In Figure 3 In the middle, the display unit DU and the color filter unit CU are shown as being joined to each other by an adhesive layer ADH. The adhesive layer ADH can be, for example, an optical clear adhesive (OCA), but the present disclosure is not necessarily limited thereto. In another embodiment, the adhesive layer ADH can be omitted.

[0065] Referring to Figure 4 , the display apparatus DD can include a light conversion layer 120. The light conversion layer 120 can include a first color conversion layer 120R and a second color conversion layer 120G, and a transmissive layer 120B. The first color conversion layer 120R and the second color conversion layer 120G can include a quantum dot material (e.g., a quantum dot). The core of the quantum dot can be selected from a group of II-VI compounds, III-V compounds, IV-VI compounds, IV elements, IV compounds, and any combination thereof.

[0066] The II-VI compound can be selected from the group consisting of: binary compounds selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, and any suitable mixture thereof; ternary compounds selected from the group consisting of AgInS, CuInS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe, MgZnSe, MgZnS, and any suitable mixture thereof; and quaternary compounds selected from the group consisting of CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and any suitable mixture thereof.

[0067] The III-V compound can be selected from the group consisting of binary compounds selected from the group consisting of GaN, GaP, GaAs, GaSb, AIN, AIP, AlAs, AlSb, InN, InP, InAs, InSb, and any suitable mixture thereof; ternary compounds selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, INGaP, InNP, InNAs, InNSb, InPAs, InPSb, and any suitable mixture thereof; and quaternary compounds selected from the group consisting of GaAlNP, GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and any suitable mixture thereof.

[0068] The IV-VI compound can be selected from the group consisting of binary compounds selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and any suitable mixture thereof; ternary compounds selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and any suitable mixture thereof; and quaternary compounds selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and any suitable mixture thereof.

[0069] The Group IV element can be selected from the group consisting of Si, Ge, and any suitable mixture thereof. The Group IV compound can be a binary compound selected from the group consisting of SiC, SiGe, and any suitable mixture thereof.

[0070] The binary, ternary, or quaternary compound can be present in the particle in a uniform (e.g., substantially uniform) concentration profile, or in a partially different concentration profile in the same particle. In embodiments, the quantum dots can have a core-shell structure in which one quantum dot surrounds another quantum dot. The interface between the core and the shell can have a concentration gradient in which the concentration of the element present in the shell decreases along a direction toward the center thereof.

[0071] In some embodiments, the quantum dots can have the above-described core-shell structure including a core having a nanocrystal and a shell surrounding the core. The shell of the quantum dot can serve as a protective layer to prevent or reduce chemical deformation of the core to maintain the semiconductor property, and / or as a charged layer for imparting or improving the electrophoretic property of the quantum dot. The shell can be a single layer or multiple layers. The interface between the core and the shell can have a concentration gradient in which the concentration of the element present in the shell is lowered along a direction toward the center thereof. Examples of the shell of the quantum dot can include a metal oxide and / or a non-metal oxide, a semiconductor compound, or any combination thereof.

[0072] For example, the metal oxide and / or non-metal oxide can be a binary compound such as SiO2, Al2O3, TiO2, ZnO, MnO, Mn2O3, Mn3O4, CoO, Co3O4, and / or NiO, and / or a ternary compound such as MgAl2O4, CoFe2O4, NiFe2O4, and / or CoMn2O4, but the present disclosure is not limited thereto.

[0073] In addition, the semiconductor compound can be, for example, CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnSeS, ZnTeS, GaAs, GaP, GaSb, HgS, HgSe, HgTe, InAs, InP, InGaP, InSb, AlAs, AlP, and / or AlSb, etc., but the present disclosure is not limited thereto.

[0074] The quantum dot can have a full width at half maximum (FWHM) of a light emission wavelength spectrum of about 45 nm or less (e.g., about 40 nm or less or about 30 nm or less). Color purity and / or color reproducibility can be improved within the above-described range. In an embodiment, because light emitted by such quantum dots is emitted in all (e.g., substantially all) directions, wide viewing angles can be improved.

[0075] While the form of the quantum dot is not particularly limited, and can be any suitable form available in the art. In an embodiment, quantum dots in the form of nanoparticles, nanotubes, nanowires, nanofibers, and / or nanosheets, etc. in a spherical, pyramidal, and / or multi-arm shape, and / or a cube can be used as the quantum dots.

[0076] The quantum dots can control the color of the emitted light according to the size thereof. Accordingly, the quantum dots can have various suitable light emission colors such as blue, red, and green.

[0077] The first color conversion layer 120R can convert blue incident light Lib (e.g., light emitted from the first light emitting element LD1) into light of a first color. The light of the first color can be red light Lr. The first color conversion layer 120R can include first quantum dots 121R and a first photosensitive polymer 123R in which first scattering particles 122R (e.g., first light scattering particles 122R) are dispersed.

[0078] The first quantum dots 121R can be excited by the blue incident light Lib to isotropically emit light of the first color having a wavelength longer than that of the blue light. The first photosensitive polymer 123R can be an organic material having a light transmittance. The first scattering particles 122R can scatter the blue incident light Lib that is not absorbed into the first quantum dots 121R, thereby allowing more of the first quantum dots 121R to be excited, so that a color conversion rate of the first color conversion layer 120R can increase. The first scattering particles 122R can be, for example, titanium oxide (TiO2) and / or metal particles, etc.

[0079] The second color conversion layer 120G can convert blue incident light Lib (e.g., light emitted from the second light emitting element LD2) into light of a second color. The light of the second color can be green light Lg. The second color conversion layer 120G can include second quantum dots 121G and a second photosensitive polymer 123G in which second scattering particles 122G (e.g., second light scattering particles 122G) are dispersed.

[0080] The second quantum dots 121G can be excited by the blue incident light Lib to isotropically emit light of the second color having a wavelength longer than that of the blue light. The second photosensitive polymer 123G can be an organic material having a light transmittance, and be the same material as the first photosensitive polymer 123R. The second scattering particles 122G can scatter the blue incident light Lib that is not absorbed into the second quantum dots 121G, thereby allowing more of the second quantum dots 121G to be excited, so that a color conversion rate of the second color conversion layer 120G can increase. The second scattering particles 122G can be, for example, titanium oxide (TiO2) and / or metal particles, etc., and be the same material as or a different material from the first scattering particles 122R.

[0081] The transmission layer 120B can allow the blue incident light Lib (e.g., light emitted from the third light emitting element LD3) to transmit therethrough, thereby emitting the blue incident light Lib (i.e., blue light Lb) toward the upper substrate 160. The transmission layer 120B can include a third photosensitive polymer 123B in which third scattering particles 122B (e.g., third light scattering particles 122B) are dispersed. The third photosensitive polymer 123B can be, for example, an organic material (such as silicone and / or epoxy) having light transmittance, and be the same material or a different material from the first and second photosensitive polymers 123R and 123G. The third scattering particles 122B can scatter the blue incident light Lib, thereby emitting the blue incident light Lib, and be the same material or a different material from the first and second scattering particles 122R and 122G.

[0082] Figure 5 is a cross-sectional view schematically illustrating a display device according to an embodiment of the disclosure. Compared to the cross-sectional view shown in Figure 3 , a display device DD is shown in more detail. Figure 5

[0083] Referring to Figure 5 , according to an embodiment of the disclosure, at least one driving transistor T1 and a display element (e.g., a light emitting element LD) can be in a display area DA of the display device DD.

[0084] In this embodiment, the display area DA can include a plurality of sub-pixels SPX1, SPX2, and SPX3, and each of the sub-pixels SPX1, SPX2, and SPX3 can include an emission area EA. For example, the first sub-pixel SPX1 can include a first emission area EA1, the second sub-pixel SPX2 can include a second emission area EA2, and the third sub-pixel SPX3 can include a third emission area EA3. The emission area EA can be an area in which light is generated to output (e.g., emit) light to the outside of the display device DD. A non-emission area NEA can be disposed between the emission areas EA, such that the emission areas EA of the sub-pixels SPX1, SPX2, and SPX3 can be divided by the non-emission area NEA.

[0085] In the display area DA shown in Figure 5 , the driving transistor T1 and the storage capacitor Cst in the pixel circuit of each pixel P are shown. The display unit DU can include a pixel circuit layer PCL including the pixel circuit including the driving transistor T1 and the storage capacitor Cst, and a display element layer DPL including the light emitting element LD and on the pixel circuit layer PCL.

[0086] ​The first buffer layer 111 can be on the substrate SUB. A barrier layer can also be included between the substrate SUB and the first buffer layer 111. The barrier layer can function to prevent, minimize, or reduce impurities from permeating into the semiconductor layer Al of the drive transistor Tl from the substrate SUB, etc. The barrier layer can include inorganic materials such as oxides and / or nitrides, organic materials, and / or organic / inorganic compounds, and be disposed in a single layer or a multi-layer structure of inorganic materials and organic materials.

[0087] The bias electrode BSM can be on the first buffer layer 111 to correspond to the drive transistor Tl. A voltage can be applied to the bias electrode BSM. In an embodiment, the bias electrode BSM can function to prevent or reduce external light from being incident on the semiconductor layer Al. Accordingly, the characteristics of the drive transistor Tl can be stabilized. In some embodiments, the bias electrode BSM can be omitted. The second buffer layer 112 can be on the bias electrode BSM.

[0088] The semiconductor layer Al can be on the second buffer layer 112. The semiconductor layer Al can include amorphous silicon and / or include polycrystalline silicon. In another embodiment, the semiconductor layer Al can include an oxide of at least one material selected from the group consisting of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), aluminum (Al), cesium (Cs), cerium (Ce), and zinc (Zn). In some embodiments, the semiconductor layer Al can be formed of Zn oxide, In-Zn oxide, and / or Ga-In-Zn oxide, etc., which are Zn oxide-based materials. In yet another embodiment, the semiconductor layer Al can be an In-Ga-Zn-O (IGZO), In-Sn-Zn-O (ITZO), and / or In-Ga-Sn-Zn-O (IGTZO) semiconductor in which a metal such as In, Ga, and / or Sn is contained in ZnO. The semiconductor layer Al can include a channel region and source and drain regions disposed at both sides of the channel region. The semiconductor layer Al can be configured as a single layer or a multi-layer.

[0089] The gate electrode G1 can be on the semiconductor layer Al with the gate insulating layer 113 between the gate electrode G1 and the semiconductor layer Al to at least partially overlap the semiconductor layer Al. The gate electrode G1 can include molybdenum (Mo), aluminum (Al), copper (Cu), and / or titanium (Ti), etc., and be disposed as a single layer or a multi-layer. In an example, the gate electrode G1 can be a single layer of Mo. A first capacitor electrode CE1 of the storage capacitor Cst can be disposed in the same layer as the gate electrode G1. The first capacitor electrode CE1 can be formed of the same material as the gate electrode G1.

[0090] The interlayer insulating layer 115 (e.g., an interlayer electrically insulating layer 115) can be provided to cover the gate electrode G1 and the first capacitor electrode CE1 of the storage capacitor Cst. The interlayer insulating layer 115 can include silicon oxide (Si x O y ), silicon nitride (Si x N y ), silicon oxynitride (Si x O y N z ), aluminum oxide (Al x O y ), titanium oxide (Ti x O y ), tantalum oxide (Ta x O y ), hafnium oxide (Hf x O y ), and / or zinc oxide (Zn x O y ), etc.

[0091] The second capacitor electrode CE2 of the storage capacitor Cst, the source electrode S1, and the drain electrode D1 can be on the interlayer insulating layer 115.

[0092] The second capacitor electrode CE2 of the storage capacitor Cst, the source electrode S1, and the drain electrode D1 can include a conductive material (e.g., an electrically conductive material) including molybdenum (Mo), aluminum (Al), copper (Cu), and / or titanium (Ti), etc., and be formed as a single layer or a plurality of layers including the above-described materials. In an example, the second capacitor electrode CE2, the source electrode S1, and the drain electrode D1 can be provided in a multi-layer structure of Ti / Al / Ti. The source electrode S1 and the drain electrode D1 can be connected to the source region and the drain region of the semiconductor layer A1, respectively, through contact holes.

[0093] The second capacitor electrode CE2 of the storage capacitor Cst can be stacked with the first capacitor electrode CE1 with the interlayer insulating layer 115 between the second capacitor electrode CE2 and the first capacitor electrode CE1 of the storage capacitor Cst, thereby forming a capacitor. The interlayer insulating layer 115 can function as a dielectric layer of the storage capacitor Cst.

[0094] The second capacitor electrode CE2 of the storage capacitor Cst, the source electrode S1, and the drain electrode D1 can be covered with an inorganic protective layer PVX.

[0095] The inorganic protective layer PVX can be a single layer or a plurality of layers of silicon nitride (Si x N y ) and / or silicon oxide (Si x O y ). The inorganic protective layer PVX can be introduced to cover and protect some lines on the interlayer insulating layer 115.

[0096] The planarization layer 118 can be on the inorganic protective layer PVX. The planarization layer 118 can be formed as a single layer or multiple layers made of an organic material, and provide a flat top surface. The planarization layer 118 can include a general-purpose polymer such as benzocyclobutene (BCB), polyimide, hexamethyldisiloxane (HMDSO), polymethyl methacrylate (PMMA), and / or polystyrene (PS), a polymer derivative having a phenol group, an acryl-based polymer, an imide-based polymer, an aryl ether-based polymer, an amide-based polymer, a fluorine-based polymer, a p-xylene-based polymer, a vinyl alcohol-based polymer, and / or any suitable blend thereof, etc.

[0097] The first contact hole CH1, the second contact hole CH2, and the third contact hole CH3 that penetrate the planarization layer 118 can be disposed in the planarization layer 118. Each of the first contact hole CH1, the second contact hole CH2, and the third contact hole CH3 can electrically connect the light emitting element LD and the pixel circuit layer PCL on the planarization layer 118 to each other. The first contact hole CH1, the second contact hole CH2, and the third contact hole CH3 can include an electrically conductive material (e.g., an electrically conductive material).

[0098] The first contact hole CH1 and the second contact hole CH2 can be separated from each other by a 1-1 distance D1_1. The second contact hole CH2 and the third contact hole CH3 can be separated from each other by a 1-2 distance D1_2. The 1-1 distance D1_1 and the 1-2 distance D1_2 can be the same. For example, the distance by which the first contact hole CH1 and the second contact hole CH2 are separated from each other can be the same as the distance by which the second contact hole CH2 and the third contact hole CH3 are separated from each other.

[0099] In the display area DA of the substrate SUB, the light emitting element LD can be on the planarization layer 118. The light emitting element LD can include a first light emitting element LD1 included in the first sub-pixel SPX1, a second light emitting element LD2 included in the second sub-pixel SPX2, and a third light emitting element LD3 included in the third sub-pixel SPX3. The first light emitting element LD1 can be electrically connected to the pixel circuit layer PCL through the first contact hole CH1, the second light emitting element LD2 can be electrically connected to the pixel circuit layer PCL through the second contact hole CH2, and the third light emitting element LD3 can be electrically connected to the pixel circuit layer PCL through the third contact hole CH3. The light emitting element LD (each of the first to third light emitting elements LD1, LD2, and LD3) can include the first electrode 310, the intermediate layer 320 including a light emitting layer, and the second electrode 330.

[0100] The first electrode 310 can be a (semi-)transmissive electrode or a reflective electrode. In some embodiments, the first electrode 310 can include a reflective layer formed of Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, and / or any suitable compound thereof, etc., and a transparent or semi-transparent electrode layer on the reflective layer. The transparent or semi-transparent electrode layer can include at least one selected from the group consisting of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO), and aluminum zinc oxide (AZO). In some embodiments, the first electrode 310 can be disposed in a multi-layer structure of ITO / Ag / ITO. The first electrode 310 can be an anode electrode.

[0101] Hereinafter, the first electrode 310 included in the first light emitting element LD1 can be defined as a 1-1 electrode 310_1, the first electrode 310 included in the second light emitting element LD2 can be defined as a 1-2 electrode 310_2, and the first electrode 310 included in the third light emitting element LD3 can be defined as a 1-3 electrode 310_3. Each of the 1-1 electrode 310_1, the 1-2 electrode 310_2, and the 1-3 electrode 310_3 can be an anode electrode.

[0102] The 1-1 electrode 310_1 and the 1-2 electrode 310_2 can be spaced apart from each other by a 2-1 distance D2_1. The 1-2 electrode 310_2 and the 1-3 electrode 310_3 can be spaced apart from each other by a 2-2 distance D2_2. The 2-1 distance D2_1 and the 2-2 distance D2_2 can be the same. For example, the distance by which the 1-2 electrode 310_2 and the 1-3 electrode 310_3 are spaced apart from each other can be the same as the distance by which the 1-2 electrode 310_2 and the 1-3 electrode 310_3 are spaced apart from each other.

[0103] The pixel defining layer 119 can be on the planarization layer 118. The pixel defining layer 119 can function to increase the distance between the edge of the first electrode 310 and the second electrode 330 above the first electrode 310, thereby preventing or reducing the possibility of an arc or the like occurring at the edge of the first electrode 310. The pixel defining layer 119 can include an organic material and / or an inorganic material.

[0104] The intermediate layer 320 of the light emitting element LD can include an organic light emitting layer. The organic light emitting layer can include an organic material including a fluorescent and / or phosphorescent material that emits red, green, blue, or white light. The organic light emitting layer can be made of a low molecular weight organic material or a high molecular weight organic material, and functional layers such as a hole transport layer (HTL), a hole injection layer (HIL), an electron transport layer (ETL), and an electron injection layer (EIL) can be further selectively under / on the organic light emitting layer.

[0105] In the drawing, it is shown that the intermediate layer 320 is provided individually for each of the sub-pixels SPX1, SPX2, and SPX3. However, the present disclosure is not limited thereto. The intermediate layer 320 can be integrally formed in each of the sub-pixels SPX1, SPX2, and SPX3.

[0106] In this embodiment, the light emitting elements LD included in the sub-pixels SPX1, SPX2, and SPX3 can all include an organic light emitting layer that emits light of the same color. For example, the light emitting elements LD included in the sub-pixels SPX1, SPX2, and SPX3 can all emit blue light.

[0107] The second electrode 330 can be a transmissive electrode or a reflective electrode. In some embodiments, the second electrode 330 can be a transparent or semi-transparent electrode, and is formed of a thin film of metal having a low work function, including Li, Ca, LiF, Al, Ag, Mg, any suitable compound thereof, and / or a material having a multi-layer structure such as LiF / Ca or LiF / Al. In embodiments, a transparent conductive oxide (TCO) layer such as ITO, IZO, ZnO, and / or In2O3 can be further on the thin film of metal. The second electrode 330 can be provided throughout the display area DA and the peripheral area PA, and on the intermediate layer 320 and the pixel defining layer 119. The second electrode 330 can be integrally formed in the plurality of light emitting elements LD to correspond to the plurality of first electrodes 310. The second electrode 330 can be a cathode electrode.

[0108] The thin film encapsulation layer 400 can cover the light emitting elements LD to protect the light emitting elements LD from external moisture and / or oxygen, etc. The thin film encapsulation layer 400 can be provided throughout the display area DA, and extends outside of the display area DA. The thin film encapsulation layer 400 can include at least one organic encapsulation layer and at least one inorganic encapsulation layer. For example, the thin film encapsulation layer 400 can include a first inorganic encapsulation layer 410, an organic encapsulation layer 420, and a second inorganic encapsulation layer 430.

[0109] The first inorganic encapsulation layer 410 can cover the second electrode 330 and include an inorganic material such as silicon oxide, silicon nitride, and / or silicon oxynitride. In some embodiments, other layers such as a cover layer can be between the first inorganic encapsulation layer 410 and the second electrode 330 if needed or desired. Because the first inorganic encapsulation layer 410 is disposed along an underlying structure thereof, a top surface of the first inorganic encapsulation layer 410 can not be substantially flat. The organic encapsulation layer 420 can cover the first inorganic encapsulation layer 410, and unlike the first inorganic encapsulation layer 410, a top surface of the organic encapsulation layer 420 can be substantially flat. In some embodiments, the top surface of the organic encapsulation layer 420 can be substantially flat at a portion corresponding to the display area DA. The organic encapsulation layer 420 can include an organic material including at least one material selected from a group consisting of polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polysulfone, polyformaldehyde, polyarylate, and hexamethylsiloxane. The second inorganic encapsulation layer 430 can cover the organic encapsulation layer 420 and include an inorganic material such as silicon oxide, silicon nitride, and / or silicon oxynitride.

[0110] The color filter unit CU can include the upper substrate 160, the first insulating layer 150 (e.g., the first electrically insulating layer 150), the second insulating layer 140 (e.g., the second electrically insulating layer 140), the light blocking layer 130, the first to third filter layers 110R, 110G, and 110B, and the light conversion layer 120.

[0111] The upper substrate 160 can include a glass material, a ceramic material, a metallic material, and / or a material having a flexible and / or bendable characteristic. If (e.g., when) the upper substrate 160 has a flexible and / or bendable characteristic, the upper substrate 160 can include a polymeric resin such as polyether sulfone, polyacrylate, polyetherimide, polyethylene naphthalate, polyethylene terephthalate, polyphenylene sulfide, polyarylate, polyimide, polycarbonate, and / or cellulose acetate propionate. The upper substrate 160 can have a single layer or a multi-layer structure of the above-described materials. When the upper substrate 160 has a multi-layer structure, the upper substrate 160 can further include an inorganic layer. In some embodiments, the upper substrate 160 can have an organic material / inorganic material / organic material structure.

[0112] The light blocking layer 130 and the first to third filter layers 110R, 110G, and 110B can be on one surface of the upper substrate 160. The light blocking layer 130 and the first to third filter layers 110R, 110G, and 110B can be on the light conversion layer 120.

[0113] The light blocking layer 130 can be between the first to third filter layers 110R, 110G, and 110B to correspond to the non-emission area NEA. The light blocking layer 130 can include a first filter opening 130_H1, a second filter opening 130_H2, and a third filter opening 130_H3, and the first to third filter layers 110R, 110G, and 110B can be disposed in the first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3, respectively.

[0114] The first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3 can define an area (e.g., an emission area EA) in which light emitted (e.g., output) from the light emitting element LD is output to the outside of the display device DD. In some embodiments, the first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3 can have the same area in a plan view. For example, the first emission area EA1, the second emission area EA2, and the third emission area EA3 can have the same area in a plan view. However, the present disclosure is not limited thereto. In some embodiments, the first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3 can have different areas in a plan view. For example, the first emission area EA1, the second emission area EA2, and the third emission area EA3 can have different areas in a plan view. In some embodiments, two of the first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3 can have the same area and the other of the first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3 can have an area different from the areas of the two of the first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3 in a plan view. As such, the areas of the first filter opening 130_H1, the second filter opening 130_H2, and the third filter opening 130_H3 in a plan view can vary, and thus, the color coordinates of the display device DD can be adjusted.

[0115] The light blocking layer 130 is a black matrix and can be a layer for improving color purity and contrast. The light blocking layer 130 can include at least one selected from among a black pigment, a black dye, and a black particle. In some embodiments, the light blocking layer 130 can include Cr, CrO X , Cr / CrO X , Cr / CrO X / CrN Ya material of a resin (e.g., carbon pigments and RGB mixed pigments), graphite, and / or a non-Cr-based material.

[0116] The first to third filter layers 110R, 110G, and 110B can be (e.g., provide) red, green, and blue color filters, respectively. Light passing through the first to third filter layers 110R, 110G, and 110B has improved color reproducibility of red, green, and blue colors, respectively.

[0117] The second insulating layer 140 can have first to third openings 141R, 141G, and 141B that respectively expose the first to third filter layers 110R, 110G, and 110B. The second insulating layer 140 can include, for example, an organic material. However, the present disclosure is not limited thereto, and the second insulating layer 140 can include an inorganic material. In some cases, the second insulating layer 140 can include a light-blocking material to function as a light-blocking layer. The light-blocking material can include, for example, at least one selected from among black pigments, black dyes, black particles, and metal particles.

[0118] The first and second color conversion layers 120R and 120G and the transmissive layer 120B can be disposed in the first to third openings 141R, 141G, and 141B, respectively. The first color conversion layer 120R can be over the first light emitting element LD1. The first color conversion layer 120R can overlap at least a portion of the first light emitting element LD1 in a plan view. The second color conversion layer 120G can be over the second light emitting element LD2. The second color conversion layer 120G can overlap at least a portion of the second light emitting element LD2 in a plan view. The transmissive layer 120B can be over the third light emitting element LD3. The transmissive layer 120B can overlap at least a portion of the third light emitting element LD3.

[0119] The first insulating layer 150 can be under the light conversion layer 120. The first insulating layer 150 can include, for example, an organic material. However, the present disclosure is not limited thereto. In some embodiments, the first insulating layer 150 can include an inorganic material.

[0120] In some embodiments, the spacer CS can be further under the first insulating layer 150. In some embodiments, the spacer CS can be under the light conversion layer 120 (the first color conversion layer 120R, the second color conversion layer 120G, and the transmissive layer 120B). However, the present disclosure is not limited thereto. In some embodiments, the spacer CS can be on the light conversion layer 120.

[0121] The spacer CS can be provided so that the substrate SUB and the upper substrate 160 are kept at a set distance or a certain distance. The spacer CS can be between the substrate SUB and the upper substrate 160. The spacer CS can not overlap the light conversion layer 120 in a plan view. This will be described with reference to Figure 9 An example arrangement of the spacer CS is further described.

[0122] In some embodiments, the filler 500 can be further between the substrate SUB and the upper substrate 160. For example, the filler 500 can be under the first insulating layer 150 and on the thin film encapsulation layer 400. The filler 500 can perform a buffering action on external pressure and the like. The filler 500 can be made of an organic material such as methyl silicone, phenyl silicone, and / or polyimide. However, the present disclosure is not limited thereto, and the filler 500 can be made of urethane-based resin, epoxy-based resin, and / or acryl-based resin as an organic sealant, and / or silicon and the like as an inorganic sealant.

[0123] Hereinafter, the light conversion layer 120 and the first electrode 310 will be described in more detail. Figure 6 The light conversion layer 120 and the first electrode 310 will be described in more detail. Figure 6 is a schematic plan view of a pixel according to a first embodiment of the present disclosure. Figure 6 A plan view of the first electrode 310 and the light conversion layer 120 is shown. In Figure 6 In, components other than the first electrode 310 and the light conversion layer 120 are omitted.

[0124] Referring to Figure 6 The 1-1 electrode 310_1, the 1-2 electrode 310_2, and the 1-3 electrode 310_3 can have the same shape. The 1-1 electrode 310_1, the 1-2 electrode 310_2, and the 1-3 electrode 310_3 can have the same area in a plan view.

[0125] Each of the 1-1 electrode 310_1, the 1-2 electrode 310_2, and the 1-3 electrode 310_3 can include a first electrode portion 310_a and a second electrode portion 310_b. The first electrode portion 310_a can have a plate-like structure extending in the first direction DR1 and the second direction DR2. For example, the first electrode portion 310_a can have a rectangular planar shape having a short side extending in the first direction DR1 and a long side extending in the second direction DR2. However, the present disclosure is not limited thereto, and the first electrode portion 310_a can have various suitable shapes such as other quadrilateral shapes.

[0126] The second electrode portion 310_b can further extend in the opposite direction of the second direction DR2 from one of the two sides (e.g., both sides) of the first electrode portion 310_a opposite to each other. The two sides of the first electrode portion 310_a opposite to each other can correspond to one end portion and another end portion of the first electrode portion 310_a in the first direction DR1. For example, the second electrode portion 310_b can further extend in the opposite direction of the second direction DR2 from an end portion disposed at the left side selected from the two sides of the first electrode portion 310_a opposite to each other. A width of the first electrode portion 310_a in the first direction DR1 can be greater than a width of the second electrode portion 310_b in the first direction DR1.

[0127] The first electrode portion 310_a of the first sub-pixel SPX1 and the first electrode portion 310_a of the second sub-pixel SPX2 can be separated from each other by a second-1 distance D2_1. The first electrode portion 310_a of the second sub-pixel SPX2 and the first electrode portion 310_a of the third sub-pixel SPX3 can be separated from each other by a second-2 distance D2_2. The second-1 distance D2_1 and the second-2 distance D2_2 can be the same.

[0128] The contact holes CH1, CH2, and CH3 can overlap the second electrode portions 310_b of the sub-pixels SPX1, SPX2, and SPX3. The first contact hole CH1 can overlap the second electrode portion 310_b of the first sub-pixel SPX1 in a plan view. The second contact hole CH2 can overlap the second electrode portion 310_b of the second sub-pixel SPX2 in a plan view. The third contact hole CH3 can overlap the second electrode portion 310_b of the third sub-pixel SPX3 in a plan view.

[0129] The first contact hole CH1, the second contact hole CH2, and the third contact hole CH3 can have the same shape. For example, the first contact hole CH1, the second contact hole CH2, and the third contact hole CH3 can have the same shape in a plan view. The first contact hole CH1, the second contact hole CH2, and the third contact hole CH3 can have the same area in a plan view.

[0130] The first contact hole CH1 and the second contact hole CH2 can be separated from each other by a first-1 distance D1_1. The second contact hole CH2 and the third contact hole CH3 can be separated from each other by a first-2 distance D1_2. The first-1 distance D1_1 and the first-2 distance D1_2 can be the same.

[0131] In the display device DD according to the embodiment of the present disclosure, the first electrodes 310_1, 310_2, and 310_3 of the sub-pixels SPX1, SPX2, and SPX3 can have the same shape, the contact holes CH1, CH2, and CH3 of the sub-pixels SPX1, SPX2, and SPX3 can have the same shape, the adjacent first electrodes 310_1, 310_2, and 310_3 can be spaced apart from each other by the same distance, and the adjacent contact holes CH1, CH2, and CH3 can be spaced apart from each other by the same distance. Therefore, the process of manufacturing the first electrodes 310 is simplified, so that the manufacturing process of the display device DD can be simplified and the manufacturing cost can be reduced.

[0132] The first color conversion layer 120R can include a 1-1 portion 120R_1, a 1-2 portion 120R_2, and a 1-3 portion 120R_3. The first color conversion layer 120R can have a shape symmetrical with respect to the second direction DR2. Hereinafter, the term "symmetrical in one direction" and variations thereof mean symmetrical with respect to a line extending in the one direction.

[0133] The 1-1 portion 120R_1 can have a rectangular planar shape having a short side extending in the first direction DR1 and a long side extending in the second direction DR2. The 1-1 portion 120R_1 can have a shape symmetrical with respect to the second direction DR2. However, the present disclosure is not limited thereto, and the 1-1 portion 120R_1 can have other quadrilateral shapes or another polygonal shape symmetrical with respect to the second direction DR2 in addition to the rectangular shape.

[0134] The 1-2 portion 120R_2 can extend from the 1-1 portion 120R_1 in the same direction as the direction in which the 1-1 portion 120R_1 extends (e.g., the second direction DR2), and a width of the 1-2 portion 120R_2 in a direction perpendicular to (e.g., substantially perpendicular to) the second direction DR2 (e.g., the first direction DR1) can widen. The 1-2 portion 120R_2 can have a width that gradually widens in the second direction DR2. For example, the 1-2 portion 120R_2 can extend to have a width that widens from the 1-1 portion 120R_1 in the second direction DR2. For example, the width of the 1-2 portion 120R_2 in at least one region can be different from the width of the 1-1 portion 120R_1.

[0135] The 1-2 portion 120R_2 can have a shape symmetrical with respect to the second direction DR2. For example, the 1-2 portion 120R_2 can have a trapezoidal shape symmetrical with respect to the second direction DR2.

[0136] At least a portion of the 1-2 portion 120R_2 can not overlap the 1-1 electrode 310_1 in a plan view. At least a portion of the 1-2 portion 120R_2 can not overlap the first emission area EA1 in a plan view. The portion of the 1-2 portion 120R_2 which does not overlap the first emission area EA1 can be disposed at both sides (e.g., left and right sides) of the first emission area EA1 in a plan view. The portions of the 1-2 portion 120R_2 which do not overlap the first emission area EA1 can be symmetrical to each other with respect to the second direction DR2.

[0137] The 1-3 portion 120R_3 can extend from the 1-2 portion 120R_2 in the same direction (e.g., the second direction DR2) as a direction in which the 1-2 portion 120R_2 extends, and have a constant width. For example, the 1-3 portion 120R_3 can have the same width as a widest width among widths of the 1-2 portion 120R_2 in the first direction DR1.

[0138] The 1-3 portion 120R_3 can have a shape symmetrical with respect to the second direction DR2. For example, the 1-3 portion 120R_3 can have a quadrangular shape symmetrical with respect to the second direction DR2.

[0139] At least a portion of the 1-3 portion 120R_3 can not overlap the 1-1 electrode 310_1 in a plan view. At least a portion of the 1-3 portion 120R_3 can not overlap the first emission area EA1 in a plan view. The portion of the 1-3 portion 120R_3 which does not overlap the first emission area EA1 can be disposed at both sides (e.g., left and right sides) of the first emission area EA1 in a plan view. The portions of the 1-3 portion 120R_3 which do not overlap the first emission area EA1 can be symmetrical to each other with respect to the second direction DR2.

[0140] The first color conversion layer 120R according to an embodiment of the disclosure includes at least a portion which does not overlap the first emission area EA1, so that an edge area for disposing the first color conversion layer 120R can be secured or provided. The first color conversion layer 120R can be formed when ink is discharged through an inkjet printing apparatus. The first color conversion layer 120R includes at least a portion which does not overlap the first emission area EA1, so that an edge area to which ink can be discharged can be secured or provided. If (for example, when) the edge area to which ink can be discharged is not secured or provided, the first color conversion layer 120R can be difficult to be formed in an area corresponding to the first emission area EA1. In the display device DD according to an embodiment of the disclosure, the edge area can be secured or provided in an inkjet process of forming the first color conversion layer 120R, and the first color conversion layer 120R can be formed in an area corresponding to the first emission area EA1.

[0141] The second color conversion layer 120G can include a 2-1 portion 120G_1, a 2-2 portion 120G_2, and a 2-3 portion 120G_3. The second color conversion layer 120G can have a shape symmetrical with respect to the second direction DR2. The second color conversion layer 120G can have a shape point-symmetrical with the shape of the first color conversion layer 120R. For example, the second color conversion layer 120G and the first color conversion layer 120R can be point-symmetrical to each other with respect to a reference point located at the center of the first color conversion layer 120R and the second color conversion layer 120G. Hereinafter, that a first pattern is "point-symmetrical to a second pattern" means that the first pattern is in a point-symmetrical relationship with the second pattern with respect to a reference point located at the center of the two patterns.

[0142] The 2-1 portion 120G_1 can have a rectangular planar shape having a short side extending in the first direction DR1 and a long side extending in the second direction DR2. The 2-1 portion 120G_1 can have a shape symmetrical with respect to the second direction DR2. However, the disclosure is not limited thereto, and the 2-1 portion 120G_1 can have other quadrilateral shapes or another polygonal shape symmetrical with respect to the second direction DR2 in addition to or instead of the rectangular shape. The 2-1 portion 120G_1 can have the same shape and area as the 1-1 portion 120R_1 in a plan view. The 2-1 portion 120G_1 can be point-symmetrical to the 1-1 portion 120R_1.

[0143] The 2-2 portion 120G_2 can extend in the same direction as the direction in which the 2-1 portion 120G_1 extends (e.g., the opposite direction of the second direction DR2), and a width of the 2-2 portion 120G_2 in a direction perpendicular (e.g., substantially perpendicular) to the second direction DR2 (e.g., the first direction DR1) can widen. For example, the 2-2 portion 120G_2 can extend to have a width widened from the 2-1 portion 120G_1 in the opposite direction of the second direction DR2. For example, the width of the 2-2 portion 120G_2 in at least one region can be different from the width of the 2-1 portion 120G_1.

[0144] The 2-2 portion 120G_2 can have a shape symmetrical with respect to the second direction DR2. For example, the 2-2 portion 120G_2 can have a trapezoidal shape symmetrical with respect to the second direction DR2.

[0145] At least a portion of the 2-2 portion 120G_2 can not overlap the 1-2 electrode 310_2 in a plan view. At least a portion of the 2-2 portion 120G_2 can not overlap the second emission area EA2 in a plan view. The portion of the 2-2 portion 120G_2 that does not overlap the second emission area EA2 can be disposed at both sides (e.g., left and right sides) of the second emission area EA2 in a plan view. The portions of the 2-2 portion 120G_2 that do not overlap the second emission area EA2 can be symmetrical to each other with respect to the second direction DR2. The 2-2 portion 120G_2 can have a shape that is point-symmetrical to the shape of the 1-2 portion 120R_2 and have the same area as the 1-2 portion 120R_2 when viewed in a plan view.

[0146] The 2-3 portion 120G_3 can extend in the same direction as the direction in which the 2-2 portion 120G_2 extends (e.g., the opposite direction of the second direction DR2) and have a constant width. For example, the 2-3 portion 120G_3 can have the same width as the widest width among the widths of the 2-2 portion 120G_2 in the first direction DR1. The 2-3 portion 120G_3 can have a shape symmetrical with respect to the second direction DR2. The 2-3 portion 120G_3 can have the same shape and area as the 1-3 portion 120R_3 in a plan view. The 2-3 portion 120G_3 can be point-symmetrical to the 1-3 portion 120R_3.

[0147] At least a portion of the 2-3 portion 120G_3 can not overlap the 1-2 electrode 310_2 in a plan view. At least a portion of the 2-3 portion 120G_3 can not overlap the second emission area EA2 in a plan view. The portion of the 2-3 portion 120G_3 that does not overlap the second emission area EA2 can be disposed at both sides (e.g., left and right sides) of the second emission area EA2 in a plan view. The portions of the 2-3 portion 120G_3 that do not overlap the second emission area EA2 can be symmetrical to each other with respect to the second direction DR2.

[0148] The display device DD according to an embodiment of the disclosure has a pixel P structure in which the first color conversion layer 120R includes a portion that does not overlap the first emission area EA1, the second color conversion layer 120G includes a portion that does not overlap the second emission area EA2, and the portion of the first color conversion layer 120R that does not overlap the first emission area EA1 and the portion of the second color conversion layer 120G that does not overlap the second emission area EA2 have shapes that are point-symmetrical to each other.

[0149] The second color conversion layer 120G according to the embodiment of the present disclosure includes at least a portion that does not overlap with the second emission area EA2, so that an edge area for forming the second color conversion layer 120G can be ensured or provided. The second color conversion layer 120G can be formed when ink is discharged by an inkjet printing apparatus. The second color conversion layer 120G includes at least a portion that does not overlap with the second emission area EA2, so that an edge area to which ink can be discharged can be ensured or provided.

[0150] The transmission layer 120B can have a rectangular planar shape having a short side extending in the first direction DR1 and a long side extending in the second direction DR2. The transmission layer 120B can have a shape symmetrical with respect to each of the second direction DR2 and the first direction DR1. However, the present disclosure is not limited thereto, and the transmission layer 120B can have other quadrangular shapes or another polygonal shape symmetrical with respect to each of the second direction DR2 and the first direction DR1, in addition to or instead of the rectangular shape.

[0151] Hereinafter, a display apparatus according to a second embodiment of the present disclosure will be described. Figure 7 is a schematic plan view of a pixel according to the second embodiment of the present disclosure. Figure 7 A plan view of the first electrode 310 and the light conversion layer 120' is shown. Repetitive description of components described hereinabove, in addition to the first electrode 310 and the light conversion layer 120', will not be made with respect to Figure 7 Repetition.

[0152] The second embodiment has a structure of the light conversion layer 120' different from the light conversion layer 120 according to the first embodiment of the present disclosure. Hereinafter, description of a portion that is repetitive of the above-described portion will not be repeated.

[0153] The first color conversion layer 120R' can include a 1-1 portion 120R_1' and a 1-2 portion 120R_2'. The first color conversion layer 120R' can have a shape symmetrical with respect to the second direction DR2.

[0154] The 1-1 portion 120R_1' can have a rectangular planar shape having a short side extending in the first direction DR1 and a long side extending in the second direction DR2. The 1-1 portion 120R_1' can have a shape symmetrical with respect to the second direction DR2. However, the present disclosure is not limited thereto, and the 1-1 portion 120R_1' can have other quadrangular shapes or another polygonal shape symmetrical with respect to the second direction DR2, in addition to or instead of the rectangular shape.

[0155] The 1-2 portion 120R_2' can extend in the same direction (e.g., the second direction DR2) as the direction in which the 1-1 portion 120R_1' extends. The 1-2 portion 120R_2' can have a width that is wider than the width of the 1-1 portion 120R_1' in the first direction DR1. Each of the 1-2 portion 120R_2' and the 1-1 portion 120R_1' can have a constant width. The 1-2 portion 120R_2' can have a shape that is symmetrical with respect to the second direction DR2.

[0156] At least a portion of the 1-2 portion 120R_2' can not overlap the 1-1 electrode 310_1 in a plan view. At least a portion of the 1-2 portion 120R_2' can not overlap the first emission area EA1 in a plan view. The portion of the 1-2 portion 120R_2' that does not overlap the first emission area EA1 can be disposed at both sides (e.g., left and right sides) of the first emission area EA1 in a plan view. The portions of the 1-2 portion 120R_2' that do not overlap the first emission area EA1 can be symmetrical to each other with respect to the second direction DR2.

[0157] The second color conversion layer 120G' can include a 2-1 portion 120G_1' and a 2-2 portion 120G_2'. The second color conversion layer 120G' can have a shape that is symmetrical with respect to the second direction DR2. The second color conversion layer 120G' can have a shape that is point-symmetrical to the shape of the first color conversion layer 120R'. The second color conversion layer 120G' and the first color conversion layer 120R' can be point-symmetrical to each other.

[0158] The 2-1 portion 120G_1' can have a rectangular planar shape having a short side extending in the first direction DR1 and a long side extending in the second direction DR2. The 2-1 portion 120G_1' can have a shape that is symmetrical with respect to the second direction DR2. However, the disclosure is not limited thereto, and the 2-1 portion 120G_1' can have other quadrilateral shapes or another polygonal shape that is symmetrical with respect to the second direction DR2, in addition to or instead of the rectangular shape. The 2-1 portion 120G_1' can have the same shape and area as the 1-1 portion 120R_1' in a plan view. The 2-1 portion 120G_1' can be point-symmetrical to the 1-1 portion 120R_1'.

[0159] The 2-2 portion 120G_2' can extend in the same direction as the direction in which the 2-1 portion 120G_1' extends (e.g., the opposite direction of the second direction DR2). The 2-2 portion 120G_2' can have a width that is wider than the width of the 2-1 portion 120G_1' in the first direction DR1. Each of the 2-2 portion 120G_2' and the 2-1 portion 120G_1' can have a constant width.

[0160] The 2-2 portion 120G_2' can have a shape that is symmetrical with respect to the second direction DR2. The 2-2 portion 120G_2' can have the same shape and area as the 1-2 portion 120R_2' in a plan view. The 2-2 portion 120G_2' and the 1-2 portion 120R_2' can be point-symmetrical to each other.

[0161] At least a portion of the 2-2 portion 120G_2' can not overlap the 1-2 electrode 310_2 in a plan view. At least a portion of the 2-2 portion 120G_2' can not overlap the second emission area EA2 in a plan view. The portion of the 2-2 portion 120G_2' that does not overlap the second emission area EA2 can be disposed at both sides (e.g., left and right sides) of the second emission area EA2 in a plan view. The portions of the 2-2 portion 120G_2' that do not overlap the second emission area EA2 can be symmetrical to each other with respect to the second direction DR2.

[0162] In the display device DD according to the second embodiment of the disclosure, the first color conversion layer 120R' includes a portion that does not overlap the first emission area EA1, and the second color conversion layer 120G' includes a portion that does not overlap the second emission area EA2, so that an edge area to which ink can be discharged can be secured or provided.

[0163] Hereinafter, a display device according to a third embodiment of the disclosure will be described. Figure 8 is a schematic plan view of a pixel according to the third embodiment of the disclosure. Figure 8 A plan view of the first electrode 310 and the light conversion layer 120'' is shown. Repetitive descriptions of components described hereinabove will not be repeated with respect to Figure 8 Repetition.

[0164] The third embodiment has a structure of the light conversion layer 120'' that is different from the light conversion layer 120 according to the first embodiment of the disclosure. Hereinafter, descriptions of portions that are repetitive of the above-described portions will not be repeated.

[0165] The first color conversion layer 120R'' can include a 1-1 portion 120R_1'' and a 1-2 portion 120R_2''. The first color conversion layer 120R'' can have a shape symmetrical with respect to the second direction DR2.

[0166] The 1-1 portion 120R_1'' can correspond to the above-described 1-1 portion 120R_1' of the second embodiment.

[0167] The 1-2 portion 120R_2'' can extend in the same direction as a direction in which the 1-1 portion 120R_1'' extends (e.g., the second direction DR2). The 1-2 portion 120R_2'' can have a width in the first direction DR1 that widens along the second direction DR2. For example, the 1-2 portion 120R_2'' can have a width in the first direction DR1 that widens as it becomes farther away from the 1-1 portion 120R_1''. The 1-2 portion 120R_2'' can have a trapezoidal shape symmetrical with respect to the second direction DR2.

[0168] At least a portion of the 1-2 portion 120R_2'' can not overlap the 1-1 electrode 310_1 in a plan view. At least a portion of the 1-2 portion 120R_2'' can not overlap the first emission area EA1 in a plan view. The portion of the 1-2 portion 120R_2'' that does not overlap the first emission area EA1 can be disposed at both sides (e.g., left and right sides) of the first emission area EA1 in a plan view. The portions of the 1-2 portion 120R_2'' that do not overlap the first emission area EA1 can be symmetrical with respect to each other with respect to the second direction DR2.

[0169] The second color conversion layer 120G'' can include a 2-1 portion 120G_1'' and a 2-2 portion 120G_2''. The second color conversion layer 120G'' can have a shape symmetrical with respect to the second direction DR2. The second color conversion layer 120G'' can have a shape point-symmetrical with the shape of the first color conversion layer 120R''. The second color conversion layer 120G'' can be point-symmetrical with the first color conversion layer 120R''.

[0170] The 2-1 portion 120G_1'' can correspond to the above-described 2-1 portion 120G_1' of the second embodiment.

[0171] The 2-2 portion 120G_2'' can extend in the same direction as the direction in which the 2-1 portion 120G_1'' extends (e.g., the opposite direction of the second direction DR2). The 2-2 portion 120G_2'' can have a width in the first direction DR1 that widens along the second direction DR2. For example, the 2-2 portion 120G_2'' can have a width in the first direction DR1 that widens as it gets farther away from the 2-1 portion 120G_1''. The 2-2 portion 120G_2'' can have a trapezoidal shape that is symmetrical with respect to the second direction DR2. The 2-2 portion 120G_2'' can have a shape in a plan view that is point-symmetrical to the shape of the 1-2 portion 120R_2'' and have the same area as the 1-2 portion 120R_2''. The 2-2 portion 120G_2'' can be point-symmetrical to the 1-2 portion 120R_2''.

[0172] At least a portion of the 2-2 portion 120G_2'' can not overlap the 1-2 electrode 310_2 in a plan view. At least a portion of the 2-2 portion 120G_2'' can not overlap the second emission area EA2 in a plan view. The portion of the 2-2 portion 120G_2'' that does not overlap the second emission area EA2 can be disposed at both sides (e.g., left and right sides) of the second emission area EA2 in a plan view. The portions of the 2-2 portion 120G_2'' that do not overlap the second emission area EA2 can be symmetrical to each other with respect to the second direction DR2.

[0173] In the display device DD according to the third embodiment of the present disclosure, the first color conversion layer 120R'' includes a portion that does not overlap the first emission area EA1, and the second color conversion layer 120G'' includes a portion that does not overlap the second emission area EA2, so that an edge area to which ink can be discharged can be secured or provided.

[0174] In the display device DD according to the embodiments of the present disclosure, in a plan view, the portion of the first color conversion layer 120R, 120R', and / or 120R'' that does not overlap the first emission area EA1 is disposed at both sides of the first emission area EA1, and the portion of the second color conversion layer 120G, 120G', and / or 120G'' that does not overlap the second emission area EA2 is disposed at both sides of the second emission area EA2, so that the first electrodes 310_1, 310_2, and 310_3 can have the same shape and area and be spaced apart from each other by the same distance.

[0175] Hereinafter, the arrangement of the spacer CS will be described with reference to Figure 9 The arrangement of the spacer CS will be described. Figure 9 is a plan view schematically showing the arrangement of the spacer according to the embodiments of the present disclosure.

[0176] Referring to Figure 9 The spacer CS can be between the second color conversion layer 120G and the transmissive layer 120B in a plan view. For example, the spacer CS can be between the 2-1 portion 120G_1 of the second color conversion layer 120G and the transmissive layer 120B in a plan view.

[0177] In the display device DD according to an embodiment of the disclosure, the 2-1 portion 120G_1 of the second color conversion layer 120G can have a width narrower than a width of the 2-3 portion 120G_3 of the second color conversion layer 120G in the first direction DR1, and a space in which the spacer CS is disposed can be between the 2-1 portion 120G_1 and the transmissive layer 120B. Accordingly, the spacer CS can be between the 2-1 portion 120G_1 and the transmissive layer 120B, so that a distance between the substrate SUB and the upper substrate 160 can be maintained.

[0178] Hereinafter, the arrangement of the spacer CS will be described with reference to Figure 10 . Figure 10 is a plan view schematically showing an arrangement of a spacer according to another embodiment of the disclosure.

[0179] Hereinafter, in Figure 10 , for convenience of description, the first to third sub-pixels SPX1, SPX2 and SPX3 of the second pixel P2 can be defined as a first adjacent sub-pixel SPX1_a, a second adjacent sub-pixel SPX2_a and a third adjacent sub-pixel SPX3_a, respectively. In some embodiments, the first color conversion layer 120R, the second color conversion layer 120G and the transmissive layer 120B of the second pixel P2 can be defined as a first adjacent color conversion layer 120R_a, a second adjacent color conversion layer 120G_a and an adjacent transmissive layer 120B_a, respectively.

[0180] In some embodiments, the 1-1 electrode 310_1, the 1-2 electrode 310_2 and the 1-3 electrode 310_3 of the second pixel P2 can be defined as a 1-1 adjacent electrode 310_1', a 1-2 adjacent electrode 310_2' and a 1-3 adjacent electrode 310_3', respectively, and the first to third contact holes CH1, CH2 and CH3 of the second pixel P2 can be defined as a first adjacent contact hole to a third adjacent contact hole CH1', CH2' and CH3', respectively.

[0181] The second pixel P2 can include a first adjacent sub-pixel SPX1_a, a second adjacent sub-pixel SPX2_a, and a third adjacent sub-pixel SPX3_a, and the first to third adjacent sub-pixels SPX1_a, SPX2_a, and SPX3_a can have the same structure as the first to third sub-pixels SPX1, SPX2, and SPX3 described above, respectively. The first adjacent color conversion layer 120R_a, the second adjacent color conversion layer 120G_a, and the adjacent transmissive layer 120B_a can have the same structure as the first color conversion layer 120R, the second color conversion layer 120G, and the transmissive layer 120B described above, respectively. The first-1 adjacent electrode 310_1', the first-2 adjacent electrode 310_2', and the first-3 adjacent electrode 310_3' can have the same structure as the first-1 electrode 310_1, the first-2 electrode 310_2, and the first-3 electrode 310_3. The first to third adjacent contact holes CH1', CH2', and CH3' can have the same structure as the first to third contact holes CH1, CH2, and CH3.

[0182] The first-1 adjacent electrode 310_1', the first-2 adjacent electrode 310_2', and the first-3 adjacent electrode 310_3' can be spaced apart from each other by the same distance. The first-1 adjacent electrode 310_1', the first-2 adjacent electrode 310_2', and the first-3 adjacent electrode 310_3' can be disposed to be spaced apart from each other by the distance by which the first-1 electrode 310_1, the first-2 electrode 310_2, and the first-3 electrode 310_3 are spaced apart from each other. The first-1 adjacent electrode 310_1' and the first-2 adjacent electrode 310_2' can be spaced apart from each other by the second-1 distance D2_1 or the second-2 distance D2_2. The first-2 adjacent electrode 310_2' and the first-3 adjacent electrode 310_3' can be spaced apart from each other by the second-1 distance D2_1 or the second-2 distance D2_2.

[0183] The adjacent sub-pixels between the first pixel P1 and the second pixel P2 can be spaced apart from each other by the same distance. For example, the first-1 adjacent electrode 310_1' and the first-3 electrode 310_3 can be spaced apart from each other by the same distance.

[0184] The first, second, and third adjacent contact holes CH1', CH2', and CH3' can be spaced apart from each other by the same distance. The first, second, and third adjacent contact holes CH1', CH2', and CH3' can be spaced apart from each other by the distance at which the first, second, and third contact holes CH1, CH2, and CH3 are spaced apart from each other. The first and second adjacent contact holes CH1' and CH2' can be spaced apart from each other by the 1-1 distance D1_1 or the 1-2 distance D1_2. The second and third adjacent contact holes CH2' and CH3' can be spaced apart from each other by the 1-1 distance D1_1 or the 1-2 distance D1_2.

[0185] Referring to Figure 10 The spacer CS can be between the transmissive layer 120B and the first adjacent color conversion layer 120R_a in a plan view. For example, the spacer CS can be between the 1-1 portion 120R_1 of the first adjacent color conversion layer 120R_a and the transmissive layer 120B in a plan view.

[0186] In the display device DD according to the embodiment of the disclosure, the 1-1 portion 120R_1 of the first adjacent color conversion layer 120R_a can have a width narrower than the 1-3 portion 120R_3 of the first adjacent color conversion layer 120R_a in the first direction DR1, and a space in which the spacer CS is disposed can be between the 1-1 portion 120R_1 of the first adjacent color conversion layer 120R_a and the transmissive layer 120B. The spacer CS can be between the 1-1 portion 120R_1 of the first adjacent color conversion layer 120R_a and the transmissive layer 120B, so that a distance between the substrate SUB and the upper substrate 160 can be maintained.

[0187] The display device according to the embodiment is applicable to various types of electronic devices. In the embodiment, the electronic device includes the above-described display device, and in addition to the display device, other modules or devices having additional functions can be included.

[0188] Figure 11 is a block diagram of an electronic device according to an embodiment. Referring to Figure 11 The electronic device 10 can include a display module 11, a processor 12, a memory 13, and a power module 14.

[0189] The processor 12 can include at least one of a central processing unit (CPU), an application processor (AP), a graphics processing unit (GPU), a communication processor (CP), an image signal processor (ISP), and a controller.

[0190] The memory 13 can store data and / or information for operating the processor 12 or the display module 11. When the processor 12 executes an application stored in the memory 13, an image data signal and / or an input control signal can be transmitted to the display module 11. The display module 11 can process the provided signal and output image information on a display screen.

[0191] The power module 14 can include a power supply module such as a power adapter or a battery device, and a power conversion module. The power conversion module converts power supplied by the power supply module and generates power to operate the electronic device 10.

[0192] At least one of the above-described components of the electronic device 10 can be included in a display device according to an embodiment as described above. In addition, some of the modules included in the electronic device 10 can be included in the display device in terms of functions, and others can be separately disposed from the display device. For example, the display module 11 is included in the display device, while the processor 12, the memory 13, and the power module 14 are not included in the display device but are separately disposed in the electronic device 10.

[0193] Figure 12 Schematic diagrams showing various embodiments of an electronic device are illustrated.

[0194] Referring to Figure 12 Various types of electronic devices to which embodiments of a display device are applied can include an electronic device for displaying an image such as a smart phone 10_1a, a tablet PC 10_1b, a laptop computer 10_1c, a television (TV) 10_1d, and a desktop monitor 10_1e, a wearable electronic device including a display module such as smart glasses 10_2a, a head-mounted display (HMD) 10_2b, and a smart watch 10_2c, and a car electronic device 10_3 including a display module such as a central information display (CID) and an interior mirror display disposed at an instrument cluster, a center console, and a dashboard of a vehicle.

[0195] According to an embodiment of the disclosure, a display device can be provided that is capable of simplifying a manufacturing process of the display device and securing or providing an edge area for forming a light conversion layer including quantum dots.

[0196] Example embodiments have been disclosed and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, unless otherwise specifically stated. In some instances, certain terminology can have been used for the sake of readability only. Except where otherwise specifically noted, any feature, characteristic, or element described in relation to a particular embodiment can be used alone or in combination with any and every other feature, characteristic or element described herein, unless otherwise specifically indicated. Accordingly, the skilled artisan will appreciate that various adaptations and modifications of the embodiments described can be accomplished without departing from the spirit and scope of the disclosure as set forth in the claims and equivalents thereof.

Claims

1. A display device comprising: a display region including a first pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel; a first light-emitting element included in the first sub-pixel; a second light-emitting element included in the second sub-pixel; and a third light-emitting element included in the third sub-pixel, wherein the first light-emitting element includes a 1-1 electrode, the second light-emitting element includes a 1-2 electrode, and the third light-emitting element includes a 1-3 electrode, and wherein the 1-1 electrode and the 1-2 electrode are separated apart by a 2-1 distance, and the 1-2 electrode and the 1-3 electrode are separated apart by a 2-2 distance equal to the 2-1 distance. each of the 1-1 electrode, the 1-2 electrode, and the 1-3 electrode is an anode electrode, and 2. The display device according to claim 1, wherein wherein the 1-1 electrode, the 1-2 electrode, and the 1-3 electrode have the same shape and the same area in a plan view.

3. The display device according to claim 1, further comprising a light conversion layer including: a first color conversion layer over the first light-emitting element; a second color conversion layer over the second light-emitting element; and a transmissive layer over the third light-emitting element, wherein the first color conversion layer and the second color conversion layer have respective shapes that are point-symmetrical to each other. the first color conversion layer includes: a 1-1 portion extending in a first direction and a second direction; 4. The display device according to claim 3, wherein a 1-2 portion extending from the 1-1 portion in the second direction; and a 1-3 portion extending from the 1-2 portion in the second direction, wherein the 1-2 portion has a width that widens in the second direction, and wherein each of the first color conversion layer and the second color conversion layer has a shape that is line-symmetrical with respect to a line extending in the second direction in a plan view. the first color conversion layer includes: a 1-1 portion extending in a first direction and a second direction; and 5. The display device according to claim 3, wherein a 1-2 portion extending from the 1-1 portion in the second direction, wherein the 1-2 portion has a width that is wider than a width of the 1-1 portion and is constant, or has a width that widens in the second direction, and wherein each of the first color conversion layer and the second color conversion layer has a shape that is line-symmetrical with respect to a line extending in the second direction in a plan view.

6. The display device according to claim 1, further comprising: a pixel circuit layer including a pixel circuit; a first contact hole electrically connecting the first light-emitting element and the pixel circuit layer to each other; a second contact hole electrically connecting the second light-emitting element and the pixel circuit layer to each other; and a third contact hole electrically connecting the third light-emitting element and the pixel circuit layer to each other, wherein the first contact hole and the second contact hole are separated apart from each other by a 1-1 distance, and ​ ​ ​ The second contact hole and the third contact hole are separated from each other by a first-2 distance equal to the first-1 distance.

7. The display device of claim 3, further comprising: a spacer under the light conversion layer; and a light blocking layer over the light conversion layer, wherein the spacer is between the second color conversion layer and the transmissive layer in plan view, wherein the light blocking layer includes a first filter opening defining a first emission area, a second filter opening defining a second emission area, and a third filter opening defining a third emission area, and wherein the first emission area, the second emission area, and the third emission area have different respective areas in plan view.

8. The display device of claim 3, further comprising: a second pixel arranged with the first pixel in a first direction, the second pixel including a first adjacent sub-pixel, a second adjacent sub-pixel, and a third adjacent sub-pixel; and a spacer under the light conversion layer, wherein the second pixel includes a first adjacent color conversion layer having the same structure as the first color conversion layer, and wherein the spacer is between the transmissive layer and the first adjacent color conversion layer in plan view.

9. A display device, comprising: a display area including a first pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel; a first light emitting element included in the first sub-pixel; a second light emitting element included in the second sub-pixel; a third light emitting element included in the third sub-pixel; and a light conversion layer over the first light emitting element to the third light emitting element, wherein the light conversion layer includes a first color conversion layer, a second color conversion layer, and a transmissive layer, wherein the first color conversion layer and the second color conversion layer have shapes that are point-symmetric to each other in plan view, and wherein each of the first color conversion layer and the second color conversion layer has a shape that is line-symmetric with respect to a line extending in one direction in plan view.

10. An electronic device, comprising: a processor to provide input image data; and a display device to display an image based on the input image data, wherein the display device includes a display area including a first pixel including a first sub-pixel, a second sub-pixel, and a third sub-pixel, a first light emitting element included in the first sub-pixel, a second light emitting element included in the second sub-pixel, and a third light emitting element included in the third sub-pixel, wherein the first light emitting element includes a first-1 electrode, the second light emitting element includes a first-2 electrode, and the third light emitting element includes a first-3 electrode, and wherein the first-1 electrode and the first-2 electrode are separated by a second-1 distance, and the first-2 electrode and the first-3 electrode are separated by a second-2 distance equal to the second-1 distance. ​ ​

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