Display device

Abstract

A display device includes a base substrate, an outer bank on the base substrate and including an opening defining an emission region, a light-emitting element in the emission region and including at least an active layer and extending in a first direction, an anti-mixing member on the outer bank and having an opening defining a transmission region, and a color control layer in the opening defined by the anti-mixing member, wherein, when viewed from the top, the transmission region includes a first side edge at one side in the first direction and a second side edge at an opposite side in the first direction, and wherein a first distance between a first reference line and the first side edge of the transmission region is equal to a second distance between the second side edge of the transmission region and the first reference line.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0152506, filed with the Korean Intellectual Property Office on November 16, 2020, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] This disclosure relates to display devices. Background Technology

[0004] With the development of multimedia technology, display devices have become increasingly important. Therefore, various display devices such as Organic Light Emitting Diode (OLED) displays and Liquid Crystal Display (LCD) displays are currently in use.

[0005] Display devices are used to display images and include display panels such as light-emitting display panels or liquid crystal display panels. In these display panels, light-emitting display panels may include light-emitting elements. For example, light-emitting elements may include organic light-emitting elements that use organic materials as light-emitting materials and inorganic light-emitting elements that use inorganic materials as light-emitting materials. Summary of the Invention

[0006] The embodiments of this disclosure provide a display device with improved light emission efficiency.

[0007] It should be noted that the aspects and features of the embodiments of this disclosure are not limited to those described above, and other aspects and features of the embodiments of this disclosure will be apparent to those skilled in the art from the following description.

[0008] According to one aspect of the embodiments of the present disclosure, a display device is provided, the display device comprising: a base substrate; an outer embankment on the base substrate and having an opening defining an emission region; a light-emitting element including at least an active layer in the emission region and extending in a first direction; an anti-color mixing member on the outer embankment and having an opening defining a transmission region; and a color control layer in the opening defined by the anti-color mixing member, wherein, when viewed from above, the transmission region includes a first side edge at one side in the first direction and a second side edge at an opposite side in the first direction, and wherein a first distance between a first reference line passing through the center of the active layer of the light-emitting element in a second direction perpendicular to the first direction and the first side edge of the transmission region is equal to a second distance between the second side edge of the transmission region and the first reference line.

[0009] In one embodiment, when viewed from above, the emission region includes a first side on one side in a first direction and a second side on the opposite side in the first direction, wherein the distance between the first side of the emission region and the first side of the transmission region is equal to the distance between the second side of the emission region and the second side of the transmission region.

[0010] In this implementation, the distance between the first side of the launch area and the first reference line is equal to the distance between the second side of the launch area and the first reference line.

[0011] In one embodiment, the active layer is positioned closer to one side in the first direction than the center of the light-emitting element, and wherein the distance between the first side of the emitting region and the light-emitting element is different from the distance between the second side of the emitting region and the light-emitting element.

[0012] In one embodiment, when viewed from above, the emitting region includes a first side on one side in a first direction and a second side on the opposite side in the first direction, wherein the distance between the first side of the emitting region and the light-emitting element is equal to the distance between the second side of the emitting region and the light-emitting element.

[0013] In one embodiment, the active layer is positioned closer to one side in the first direction than the center of the light-emitting element, and wherein the distance between the first side of the emitting region and the first side of the transmissive region is different from the distance between the second side of the emitting region and the second side of the transmissive region.

[0014] In one embodiment, the first reference line overlaps with the second reference line that equally divides the transmission area in the first direction.

[0015] According to one aspect of this disclosure, a display device is provided, comprising: a base substrate; an outer embankment on the base substrate having an opening defining an emission region; a first light-emitting element and a second light-emitting element, each extending in a first direction within the emission region and including at least an active layer; an anti-color-mixing member on the outer embankment having an opening defining a transmission region; and a color control layer in the opening separated (defined) by the anti-color-mixing member, wherein, when viewed from above, the transmission region includes a first side edge at one side in the first direction and a second side edge at an opposite side in the first direction, wherein the first light-emitting element is adjacent to the first side edge of the transmission region, and the second light-emitting element is adjacent to the second side edge of the transmission region, wherein the first light-emitting element and the second light-emitting element are spaced apart from each other, wherein a first reference line of the first light-emitting element passes through the center of the active layer of the first light-emitting element in a second direction perpendicular to the first direction, wherein a first reference line of the second light-emitting element passes through the center of the active layer of the second light-emitting element in the second direction, and wherein a first distance between the first reference line of the first light-emitting element and the first side edge of the transmission region is equal to a second distance between the first reference line of the second light-emitting element and the second side edge of the transmission region.

[0016] In one embodiment, the first light-emitting element and the second light-emitting element are spaced apart from each other in a first direction.

[0017] In one embodiment, when viewed from above, the emission region includes a first side on one side in a first direction and a second side on the opposite side in the first direction, wherein the distance between the first side of the emission region and the first side of the transmission region is equal to the distance between the second side of the emission region and the second side of the transmission region.

[0018] In this embodiment, the distance between the first side of the emitting region and the first reference line of the first light-emitting element is equal to the distance between the second side of the emitting region and the first reference line of the second light-emitting element.

[0019] In one embodiment, the active layer of the first light-emitting element is positioned closer to one side in a first direction than the center of the first light-emitting element, wherein the first reference line of the second light-emitting element passes through the center of the active layer of the second light-emitting element in a second direction, and wherein the first distance between the first reference line of the first light-emitting element and the first side of the transmission region is equal to the second distance between the first reference line of the second light-emitting element and the second side of the transmission region.

[0020] In one embodiment, when viewed from above, the emitting region includes a first side on one side in a first direction and a second side on the opposite side in the first direction, wherein the distance between the first side of the emitting region and the first light-emitting element is equal to the distance between the second side of the emitting region and the second light-emitting element.

[0021] In one embodiment, the active layer of the first light-emitting element is positioned closer to one side in a first direction than the center of the first light-emitting element, and the active layer of the second light-emitting element is positioned closer to one side in a first direction than the center of the second light-emitting element. The active layers of the first and second light-emitting elements face the same direction, and the distance between the first side of the emitting region and the first side of the transmission region is different from the distance between the second side of the emitting region and the second side of the transmission region.

[0022] In one embodiment, the first light-emitting element and the second light-emitting element are spaced apart from each other in a second direction perpendicular to the first direction.

[0023] In one embodiment, each of the first reference line of the first light-emitting element and the first reference line of the second light-emitting element overlaps with the second reference line that equally divides the transmission area in the first direction.

[0024] According to one aspect of this disclosure, a display device is provided, comprising: a base substrate; an outer embankment on the base substrate having an opening defining an emission region; a light-emitting element extending in the emission region in a first direction and including an active layer; an anti-color mixing member on the outer embankment having an opening defining a transmission region; and a color control layer in the opening separated (defined) by the anti-color mixing member, wherein a first reference line passing through the center of the active layer in a second direction perpendicular to the first direction overlaps with a second reference line that equally divides the transmission region in the first direction.

[0025] In one embodiment, the distance between the first end of the light-emitting element and the first reference line is different from the distance between the second end of the light-emitting element and the first reference line.

[0026] In one implementation, the third reference line, which divides the emission area equally in the first direction, overlaps with the second reference line.

[0027] In one embodiment, when viewed from above, the emitting region includes a first side on one side in a first direction and a second side on the opposite side in the first direction, wherein a first end of the light-emitting element is spaced apart from and faces the first side of the emitting region, wherein a second end of the light-emitting element is spaced apart from and faces the second side of the emitting region, and wherein the distance between the first side of the emitting region and the first end of the light-emitting element is different from the distance between the second side of the emitting region and the second end of the light-emitting element.

[0028] In one embodiment, when viewed from above, the emitting region includes a first side on one side in a first direction and a second side on the opposite side in the first direction, wherein a first end of the light-emitting element is spaced apart from and faces the first side of the emitting region, wherein a second end of the light-emitting element is spaced apart from and faces the second side of the emitting region, and wherein the distance between the first side of the emitting region and the first end of the light-emitting element is equal to the distance between the second side of the emitting region and the second end of the light-emitting element.

[0029] In one embodiment, when viewed from above, the transmission region includes a first side on one side in a first direction and a second side on the opposite side in the first direction, wherein the distance between the first side of the emission region and the first side of the transmission region is different from the distance between the second side of the emission region and the second side of the transmission region.

[0030] Details of one or more embodiments of the subject matter described in this specification are set forth in the accompanying drawings and the following description.

[0031] According to embodiments of this disclosure, the light emission efficiency of a display device can be improved by effectively adjusting the alignment between the light-emitting element of the first display substrate and the color control layer of the second display substrate.

[0032] It should be noted that the aspects and features of the embodiments of this disclosure are not limited to those described above, and other aspects and features of the embodiments of this disclosure will be apparent to those skilled in the art from the following description. Attached Figure Description

[0033] The above and other aspects and features of the embodiments of this disclosure will become more apparent from the detailed description of the embodiments with reference to the accompanying drawings.

[0034] Figure 1 This is a plan view of a display device according to an embodiment of the present disclosure.

[0035] Figure 2 It is along Figure 1 A cross-sectional view of an example display device taken by line I-I'.

[0036] Figure 3 This is a schematic view showing the arrangement of pixels in a first display substrate according to an embodiment.

[0037] Figure 4 This is a schematic view showing the arrangement of pixels in a second display substrate according to an embodiment.

[0038] Figure 5This is a plan view showing the relative arrangement of the emitting region and the transmissive region included in a pixel of a display device according to an embodiment.

[0039] Figure 6 It is along Figure 5 The line II-II' intercepted Figure 5 A cross-sectional view of the display device.

[0040] Figure 7 yes Figure 6 The first plan view of the display substrate.

[0041] Figure 8 It is along Figure 7 The lines IIIa-IIIa', IIIb-IIIb', and IIIc-IIIc' intercepted Figure 6 The first display substrate is a cross-sectional view.

[0042] Figure 9 This is a perspective cross-sectional view showing a light-emitting element according to an embodiment of the present disclosure.

[0043] Figure 10 It is shown Figure 8 An enlarged cross-sectional view of an example of region B.

[0044] Figure 11 It is an enlarged cross-sectional view showing the path of light generated from the light-emitting element.

[0045] Figure 12 It is shown Figure 8 An enlarged cross-sectional view of another example of region B.

[0046] Figure 13 This is a conceptual schematic diagram showing the relative cross-sectional arrangement between the color control layer and the active layer of the light-emitting element according to an embodiment.

[0047] Figure 14 This is a plan view showing the relative arrangement of the transmission region, the emission region, and the plurality of light-emitting elements according to an embodiment of the present disclosure.

[0048] Figure 15 This is a plan view showing the layout of the light-emitting element layer according to an embodiment of the present disclosure.

[0049] Figure 16 It is based on Figure 14 and Figure 15 A cross-sectional view of the first sub-pixel of the display device according to the embodiment.

[0050] Figure 17 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure.

[0051] Figure 18This is a conceptual schematic diagram showing the relative cross-sectional arrangement between the color control layer and the active layer of multiple light-emitting elements according to an embodiment.

[0052] Figure 19 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure.

[0053] Figure 20 It is based on Figure 19 A cross-sectional view of the display device according to an embodiment.

[0054] Figure 21 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure.

[0055] Figure 22 It is based on Figure 21 A cross-sectional view of the display device according to an embodiment.

[0056] Figure 23 This is a conceptual schematic diagram illustrating the relative cross-sectional arrangement between a color control layer and an active layer of multiple light-emitting elements according to another embodiment.

[0057] Figure 24 It is based on Figure 23 A cross-sectional view of the display device according to an embodiment.

[0058] Figure 25 This is a plan view showing the relative arrangement of an emission region and a transmission region included in a pixel of a display device according to another embodiment.

[0059] Figure 26 It is along Figure 25 A cross-sectional view of the display device taken by line IV-IV'.

[0060] Figure 27 It shows the basis Figure 25 A plan view of the relative arrangement of the transmission region, the emission region, and the multiple light-emitting elements in the embodiment.

[0061] Figure 28 It is based on Figure 25 A cross-sectional view of the first sub-pixel of the display device according to the embodiment.

[0062] Figure 29 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure.

[0063] Figure 30 It is based on Figure 29 A cross-sectional view of the display device according to an embodiment.

[0064] Figure 31 It is along Figure 1A cross-sectional view of another example of a display device, taken by line I-I'.

[0065] Figure 32 It is based on Figure 31 A cross-sectional view of the display device according to an embodiment.

[0066] Figure 33 This is a conceptual schematic diagram illustrating the relative cross-sectional arrangement between a color control layer and an active layer of multiple light-emitting elements according to another embodiment. Detailed Implementation

[0067] This disclosure will now be described more fully below with reference to the accompanying drawings, in which exemplary embodiments of the disclosure are illustrated. However, this disclosure may be implemented in various 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 this disclosure to those skilled in the art.

[0068] It will also be understood that when a layer is referred to as being "on" another layer or substrate, it can be directly on that other layer or substrate, or there may be an intervening layer. Throughout the specification, the same reference numerals indicate the same components.

[0069] It will be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the teachings of this disclosure, the first element discussed below may be referred to as the second element. Similarly, the second element may also be referred to as the first element.

[0070] In the following description, embodiments of the present disclosure will be illustrated with reference to the accompanying drawings. As used in this disclosure, a "reference line" refers to an imaginary line that does not form any part of the design or structure according to embodiments of the present disclosure.

[0071] For ease of description, spatial relative terms such as “below,” “under,” “lower,” “below,” “above,” and “upper” are used herein to describe the relationship between one element or feature and another element(s) as shown in the figures. It will be understood that, in addition to the orientations depicted in the figures, these spatial relative terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “below,” “below,” or “below” other elements or features will then be oriented “above” other elements or features. Thus, the exemplary terms “below” and “below” can encompass both above and below orientations. The device may be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used herein should be interpreted accordingly. Furthermore, it will be understood that when a layer is referred to as being “between” two layers, it can be the only layer between the two layers, or there may be one or more intervening layers.

[0072] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the terms “substantially,” “about,” and similar terms are used as approximate terms rather than as terms of degree and are intended to describe the inherent biases of measured or calculated values ​​that will be recognized by one of ordinary skill in the art.

[0073] As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “an” are intended to include the plural forms as well. It will also be further understood that, when used in this specification, the terms “comprises” and / or “comprising” specify the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of…” preceding a list of elements modify the entire list of elements, not individual elements in the list. Furthermore, when describing embodiments of this disclosure, the use of “may” indicates “one or more embodiments of this disclosure.” Additionally, the term “exemplary” is intended to refer to an example or illustration. As used herein, the terms “use,” “using,” and “used” may be considered synonymous with the terms “utilize,” “utilizing,” and “utilized,” respectively.

[0074] It will be understood that when an element or layer is referred to as being "on," "connected to," "linked to," or "adjacent to" another element or layer, it can be directly on, directly connected to, directly linked to, or directly adjacent to the other element or layer, or there can be one or more intervening elements or layers. Conversely, when an element or layer is referred to as being "directly" on, directly connected to, directly linked to, or "directly adjacent to" another element or layer, there are no intervening elements or layers.

[0075] Any numerical range described herein is intended to include all subranges containing the same numerical precision within the described range. For example, the range “1.0 to 10.0” is intended to include all subranges between the described minimum value of 1.0 and the described maximum value of 10.0 (inclusive), that is, a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit described herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit described in this specification is intended to include all higher numerical limits contained therein.

[0076] Figure 1 This is a perspective view of a display device according to an embodiment of the present disclosure.

[0077] refer to Figure 1 Display device 1 displays moving or still images. Display device 1 can refer to any electronic device that provides a display screen. For example, display device 1 may include a television, laptop computer, monitor, electronic billboard, Internet of Things (IoT) device, mobile phone, smartphone, tablet PC, electronic watch, smartwatch, watch phone, head-mounted display device, mobile communication terminal, electronic notebook, e-book reader, portable multimedia player (PMP), navigation device, game console, digital camera, portable video camera, etc.

[0078] Display device 1 includes a display panel for providing a display screen. Examples of display panels may include inorganic light-emitting display panels, organic light-emitting display panels, quantum dot light-emitting display panels, plasma display panels, field emission display panels, etc. In the following description, an inorganic light-emitting display panel is used as an example of display panel 10, but this disclosure is not limited thereto. Any other display panel may be used, as long as the technical concept of this disclosure can be equivalently applied.

[0079] In the accompanying drawings, a first direction DR1, a second direction DR2, and a third direction DR3 are defined. In a plane, the first direction DR1 may be perpendicular to the second direction DR2. The third direction DR3 may be perpendicular to the plane containing the first direction DR1 and the second direction DR2. The third direction DR3 may be perpendicular to each of the first direction DR1 and the second direction DR2. In the following description of the display device 1 according to an embodiment of the present disclosure, the third direction DR3 refers to the thickness direction of the display device 1.

[0080] When viewed from above, the display device 1 may have a rectangular shape comprising a longer side in the first direction DR1 and a shorter side in the second direction DR2. While the angle where the longer and shorter sides of the display device 1 meet may form a right angle, this is merely illustrative. The display device 1 may have rounded corners. The shape of the display device 1 is not limited to the shape shown, but can be modified in various ways. For example, the display device 1 may have other shapes, such as a square, a rectangle with rounded corners (vertices), other polygons, and a circle.

[0081] The display surface of the display device 1 may be located on one side of the display device 1 in the third direction DR3 (i.e., the thickness direction). In the following description, unless otherwise specifically stated, the upper portion of the display device 1 refers to one side of the displayed image in the third direction DR3, and the upper surface of the display device 1 refers to the surface facing the third direction DR3. Furthermore, the lower portion of the display device 1 refers to the opposite side in the third direction DR3, and similarly, the lower surface of the display device 1 refers to the surface in the third direction DR3 opposite to the upper surface of the display device 1. As used herein, the terms "left," "right," "upper," and "lower" side refer to the relative positions when the display device 1 is viewed from above. For example, the right side refers to one side in the first direction DR1, the left side refers to the opposite side in the first direction DR1, the upper side refers to one side in the second direction DR2, and the lower side refers to the opposite side in the second direction DR2.

[0082] Display device 1 may include a display area DA and a non-display area NDA surrounding the display area DA along its edge or periphery. An image may be displayed in the display area DA. No image is displayed in the non-display area NDA. The display area DA may be referred to as the active area, and the non-display area NDA may be referred to as the inactive area.

[0083] The shape of the display area DA can follow the shape of the display device 1. For example, when viewed from above, the shape of the display area DA can be a rectangle that is substantially similar to the shape of the display device 1. The display area DA can substantially occupy the center (or central area) of the display device 1.

[0084] The display area DA may include multiple pixels PX. The multiple pixels PX may be arranged in a matrix. When viewed from above, each of the pixels PX may have a rectangular or square shape. However, it should be understood that this disclosure is not limited thereto. Each of the pixels PX may have a rhomboid shape with sides tilted relative to one direction. The pixels PX in the display area DA may be arranged in stripes or... The arrangement of the structure is described, but this disclosure is not limited thereto. The arrangement structure can be referred to as an RGBG matrix structure (e.g., Matrix structure or RGBG structure (e.g., structure)). It is a registered trademark of Samsung Display Co., Ltd. of South Korea. However, the arrangement structure of the pixels PX is not limited to this, and the pixels PX can be arranged in the display area DA in various suitable structures and / or methods.

[0085] A non-display area NDA can be disposed around the display area DA. The non-display area NDA can completely or partially surround the display area DA. According to embodiments of this disclosure, the display area DA can have a rectangular shape, and the non-display area NDA can be disposed adjacent to the four sides of the display area DA. The non-display area NDA can form the frame of the display device 1. Pad areas for lines, circuit drivers, or external devices mounted on them, included in the display device 1, can be disposed in the non-display area NDA.

[0086] Figure 2 It is along Figure 1 A cross-sectional view of an example display device taken by line I-I'.

[0087] refer to Figure 1 and Figure 2 The display device 1 may include a first display substrate 10 and a second display substrate 20 facing the first display substrate 10. The display device 1 may also include a sealing member 70 connecting the first display substrate 10 and the second display substrate 20, and a filler layer 50 for filling the space between the first display substrate 10 and the second display substrate 20. In other words, the first display substrate 10 and the second display substrate 20 are located on opposite sides of the filler layer 50.

[0088] The first display substrate 10 can output light (e.g., light with a set or predetermined peak wavelength) from multiple emission regions in the display area DA. The first display substrate 10 may include elements and circuitry for displaying images. For example, the first display substrate 10 may include pixel circuitry such as switching elements and self-emissive elements disposed in the display area DA.

[0089] For example, a self-emissive element may include at least one of organic light-emitting elements, quantum dot light-emitting elements, inorganic-based micron light-emitting elements (e.g., quantum dot microLEDs), and inorganic-based nano light-emitting elements (e.g., quantum dot nanoLEDs). In the following description, as an example, the self-emissive element is a light-emitting element based on inorganic materials.

[0090] A sealing member 70 may be disposed in the non-display area NDA. The sealing member 70 may be disposed between the first display substrate 10 and the second display substrate 20 in the non-display area NDA. When viewed from above, the sealing member 70 may be disposed along the edges of the first display substrate 10 and the second display substrate 20 in the non-display area NDA to surround the display area DA. The first display substrate 10 and the second display substrate 20 may be connected to each other via the sealing member 70. In some embodiments, the sealing member 70 may comprise an organic material. For example, the sealing member 70 may be made of epoxy resin, but is not limited thereto.

[0091] A filler layer 50 may be disposed in the space between the first display substrate 10 and the second display substrate 20, surrounded by a sealing member 70. The space between the first display substrate 10 and the second display substrate 20 may be filled with the filler layer 50. The filler layer 50 may be made of a light-transmitting material. In some embodiments, the filler layer 50 may contain an organic material. For example, the filler layer 50 may be made of a silicon-based organic material, an epoxy-based organic material, etc., but is not limited thereto.

[0092] Although Figure 2 In the example shown, the display device 1 includes a first display substrate 10, a second display substrate 20 facing (or opposite) the first display substrate 10, a filler layer 50 disposed between the first display substrate 10 and the second display substrate 20, and a sealing member 70; however, this disclosure is not limited thereto. In some other embodiments, the second display substrate 20 may be stacked on top of the first display substrate 10 in the display device 1, and the filler layer 50 and the sealing member 70 may not be used. A more detailed description will follow with reference to other accompanying drawings.

[0093] Figure 3 This is a schematic view showing the arrangement of pixels in a first display substrate according to an embodiment. Figure 4 This is a schematic view showing the arrangement of pixels in a second display substrate according to an embodiment.

[0094] refer to Figure 3 and Figure 4The display area DA of the display device 1 includes a plurality of pixels PX arranged in rows and columns. Each pixel PX represents the smallest repeating unit for displaying an image. To display full color, each pixel PX may include a plurality of sub-pixels SPX that emit light of different colors. The sub-pixels SPX may be arranged sequentially and repeatedly in the first direction DR1 in the order of first sub-pixel SPX1, second sub-pixel SPX2, and third sub-pixel SPX3. According to embodiments of the present disclosure, each pixel PX may include a first sub-pixel SPX1 responsible for emitting light of a first color, a second sub-pixel SPX2 responsible for emitting light of a second color, and a third sub-pixel SPX3 responsible for emitting light of a third color. For example, the first color may be red, the second color may be green, and the third color may be blue.

[0095] refer to Figure 3 Each of the sub-pixels SPX of the first display substrate 10 may include an emission region EMA and a non-emission region NEM surrounding the emission region EMA.

[0096] In the emitting region EMA, light generated in the first display substrate 10 is emitted to the outside of the first display substrate 10. In the non-emitting region NEM, light generated in the first display substrate 10 is not emitted to the outside of the first display substrate 10.

[0097] The non-emissive region NEM of a sub-pixel SPX meets the non-emissive region NEM of an adjacent sub-pixel SPX (regardless of whether the adjacent sub-pixels SPX are in the same pixel PX). The non-emissive region NEMs of adjacent sub-pixels SPX can be connected to each other as one, and further, the non-emissive region NEMs of all sub-pixels SPX can be connected to each other as one. However, it should be understood that this disclosure is not limited thereto. The emissive region EMA of adjacent sub-pixels SPX can be divided by the non-emissive region NEM. The emissive region EMA and non-emissive region NEM of each sub-pixel SPX can be defined by an outer embankment OBK (see below) set in the non-emissive region NEM, as described later. Figure 6 The opening is used to define the boundary.

[0098] The emission region EMA may include a first emission region EMA1, a second emission region EMA2, and a third emission region EMA3. The first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 may be the emission region EMAs of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3, respectively. For example, the first emission region EMA1 may be the emission region EMA of the first sub-pixel SPX1, the second emission region EMA2 may be the emission region EMA of the second sub-pixel SPX2, and the third emission region EMA3 may be the emission region EMA of the third sub-pixel SPX3.

[0099] Light emitted from the first emitting region EMA1, the second emitting region EMA2, and the third emitting region EMA3 to the outside of the first display substrate 10 can have a suitable peak wavelength (e.g., a set or predetermined peak wavelength). For example, the first emitting region EMA1, the second emitting region EMA2, and the third emitting region EMA3 can emit blue light. The light emitted from the first emitting region EMA1, the second emitting region EMA2, and the third emitting region EMA3 can have a peak wavelength in the range of 440 nm to 480 nm. However, it should be understood that this disclosure is not limited thereto. The light emitted from the first emitting region EMA1, the second emitting region EMA2, and the third emitting region EMA3 to the outside can be different from each other. For example, the first emitting region EMA1, the second emitting region EMA2, and the third emitting region EMA3 can emit red light, green light, and blue light, respectively.

[0100] The first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 can be arranged sequentially and repeatedly along the first direction DR1 in the display region DA of the first display substrate 10. The shape of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 can be a rectangle with a width in the second direction DR2 greater than its width in the first direction DR1, but is not limited thereto.

[0101] According to embodiments of this disclosure, the widths of the first transmitting region EMA1, the second transmitting region EMA2, and the third transmitting region EMA3 in the first direction DR1 can be substantially all equal. It should be noted that the relationship between the widths of the first transmitting region EMA1, the second transmitting region EMA2, and the third transmitting region EMA3 in the first direction DR1 is not limited to... Figure 3 The implementation shown is illustrated in the example. For instance, the widths of the first transmission region EMA1, the second transmission region EMA2, and the third transmission region EMA3 in the first direction DR1 can be different from each other.

[0102] refer to Figure 4 Each of the sub-pixels SPX in the second display substrate 20 may include a transmissive region TA and a blocking region BA surrounding the transmissive region TA.

[0103] In the transmission region TA, light generated in the first display substrate 10 can pass through the second display substrate 20 and exit to the outside of the display device 1. In the blocking region BA, light emitted from the first display substrate 10 is blocked (e.g., the light does not transmit to the outside).

[0104] The blocking region BA of a sub-pixel SPX meets the blocking region BA of an adjacent sub-pixel SPX (regardless of whether the adjacent sub-pixels SPX are in the same pixel PX). The blocking regions BA of adjacent sub-pixels SPX can be connected to each other as one, and further, the blocking regions BA of all sub-pixels SPX can be connected to each other as one. However, it should be understood that this disclosure is not limited thereto. The transmission regions TA of adjacent sub-pixels SPX can be distinguished by the blocking regions BA. The transmission region TA and the blocking region BA of each sub-pixel SPX can be separated by a light-absorbing member UAB disposed in the blocking region BA (see below) as described later. Figure 6 The opening is used to define the boundary.

[0105] The transmission region TA may include a first transmission region TA1, a second transmission region TA2, and a third transmission region TA3. The first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 may be the transmission regions TA of a first sub-pixel SPX1, a second sub-pixel SPX2, and a third sub-pixel SPX3, respectively. For example, the first transmission region TA1 may be the transmission region TA of the first sub-pixel SPX1, the second transmission region TA2 may be the transmission region TA of the second sub-pixel SPX2, and the third transmission region TA3 may be the transmission region TA of the third sub-pixel SPX3.

[0106] Light emitted from the first display substrate 10 can pass through the first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 of the second display substrate 20 to exit to the outside. According to embodiments of this disclosure, the light emitted from the first display substrate 10 can be a third color, the first transmission region TA1 can output a first color, the second transmission region TA2 can output a second color, and the third transmission region TA3 can output a third color. For example, the first color can be red, the second color can be green, and the third color can be blue.

[0107] The first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 can be arranged sequentially and repeatedly along the first direction DR1 in the display region DA of the second display substrate 20. The shapes of the first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 can be rectangles with a width in the second direction DR2 greater than their width in the first direction DR1, but are not limited thereto.

[0108] According to embodiments of this disclosure, the widths of the first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 in the first direction DR1 can be substantially all equal. It should be noted that the relationship between the widths of the first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 in the first direction DR1 is not limited to... Figure 4 The embodiment shown is illustrated. For example, the widths of the first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 in the first direction DR1 can be different from each other.

[0109] Although Figure 3 and Figure 4 In the example shown, the multiple sub-pixels SPX included in each pixel PX are arranged in a stripe pattern, but the arrangement of the multiple sub-pixels SPX is not limited to this. For example, the multiple sub-pixels SPX included in pixel PX may include first sub-pixels to fourth sub-pixels that emit light of a first color to a fourth color respectively, and as shown... Like a matrix, the first and second sub-pixels can be arranged in the first column, while the third and fourth sub-pixels can be arranged in the second column. The first color can be red, the second color can be blue, and the third and fourth colors can be green (RGBG matrix). Furthermore, the multiple sub-pixels SPX included in pixel PX can include first to eighth sub-pixels that emit light of colors one through eight, respectively. Like a matrix, the first and second sub-pixels can be arranged in the first column, the third and fourth sub-pixels in the second column, the fifth and sixth sub-pixels in the third column, and the seventh and eighth sub-pixels in the fourth column. The first and sixth colors can be red, the second and fifth colors can be blue, and the third, fourth, seventh, and eighth colors can be green (RGBG / BGRG arrangement).

[0110] Figure 5 This is a plan view showing the relative arrangement of the emitting region and the transmissive region included in a pixel of a display device according to an embodiment.

[0111] refer to Figures 3 to 5Each of the sub-pixels SPX has a transmission region TA that can correspond to its emission region EMA. For example, a first transmission region TA1 can correspond to a first emission region EMA1, a second transmission region TA2 can correspond to a second emission region EMA2, and a third transmission region TA3 can correspond to a third emission region EMA3. When viewed from above, the first transmission region TA1 can overlap with the first emission region EMA1 on the third-direction DR3 and can have a larger area than the first emission region EMA1. Similarly, when viewed from above, the second transmission region TA2 can overlap with the second emission region EMA2 on the third-direction DR3 and can have a larger area than the second emission region EMA2. Furthermore, when viewed from above, the third transmission region TA3 can overlap with the third emission region EMA3 on the third-direction DR3 and can have a larger area than the third emission region EMA3. However, it should be understood that this disclosure is not limited thereto. When viewed from above, the areas of the first transmission region TA1, the second transmission region TA2, and the third transmission region TA3 can be equal to the areas of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3, respectively.

[0112] According to embodiments of this disclosure, the emitting region EMA of the first display substrate 10 can be disposed at the center (or central region) of the transmissive region TA of the second display substrate 20. In other words, when the emitting region EMA is smaller than the transmissive region TA, the width between the side of the emitting region EMA and the corresponding side of the transmissive region TA is substantially uniform along the boundary when the emitting region EMA and the transmissive region TA overlap. For example, the width W1 between the left side of the emitting region EMA and the left side of the transmissive region TA can be equal to the width W2 between the right side of the emitting region EMA and the right side of the transmissive region TA.

[0113] Figure 6 It is along Figure 5 The cross-sectional view of the display device taken by line II-II'.

[0114] refer to Figure 5 and Figure 6 The first display substrate 10 may include a first base substrate 110, a circuit layer CCL disposed on the first base substrate 110, and a plurality of light-emitting elements ED, an outer embankment OBK, and an electrode layer 300 disposed on the circuit layer CCL.

[0115] The cross-sectional structure of the first display substrate 10 will be described in the accompanying drawings from bottom to top (i.e., on the third-direction DR3). The first base substrate 110 may be an insulating substrate. The first base substrate 110 may include a transparent material. For example, the first base substrate 110 may include transparent insulating materials such as glass and quartz. The first base substrate 110 may be a rigid substrate. The first base substrate 110 is not limited to those listed above. The first base substrate 110 may include a plastic such as polyimide (PI) and may have flexible properties such that it can be buckled, bent, folded, or rolled.

[0116] A circuit layer CCL for driving pixels PX (or sub-pixels SPX) can be disposed on the surface of the first base substrate 110. The circuit layer CCL can also be disposed between the plurality of light-emitting elements ED, which will be described later, and the first base substrate 110. Reference will be made later. Figure 8 A more detailed description of the circuit layer CCL.

[0117] The outer embankment OBK can be disposed on the surface of the circuit layer CCL along the boundary of each of the sub-pixels SPX. The outer embankment OBK may include openings that expose the inner embankment IBK and multiple light-emitting elements ED. As used herein, the expression "element A is exposed by element B" means that element A is disposed at a location where element B has been removed, and does not exclude the possibility that element A may be covered by another element in the actual implementation. Therefore, the expression "the outer embankment OBK includes openings that expose the inner embankment IBK and multiple light-emitting elements ED" means that the inner embankment IBK and multiple light-emitting elements ED are disposed at a location where the outer embankment OBK has been removed.

[0118] The emitting area EMA and the non-emitting area NEM can be distinguished by the outer embankment OBK and its opening. In other words, the outer embankment OBK can be set along the boundary of each of the sub-pixels SPX to define the emitting area EMA and the non-emitting area NEM of the first display substrate 10.

[0119] In cross-section, the outer embankment OBK may have a shape protruding in the third direction DR3. The outer embankment OBK may have sloping side surfaces. The emitting region EMA and the non-emitting region NEM of the first display substrate 10 may be defined by openings separated by the sloping side surfaces of the outer embankment OBK. The emitting region EMA and the non-emitting region NEM may be defined in cross-section based on the upper side edge of the outer embankment OBK, but this disclosure is not limited thereto.

[0120] The outer embankment OBK can be set along the boundary of each of the sub-pixels SPX to prevent ink in which multiple light-emitting elements ED are dispersed from overflowing into adjacent sub-pixels SPX during inkjet printing processes using that ink.

[0121] The inner embankment IBK, electrode layer 300, and multiple light-emitting elements ED can be disposed in the opening separated by the outer embankment OBK.

[0122] The inner embankment IBK can be disposed on the circuit layer CCL exposed by the outer embankment OBK. The inner embankment IBK can be disposed in each of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 of the emission regions EMA of the first sub-pixel SPX1, the second sub-pixel SPX2, and the third sub-pixel SPX3, respectively. The inner embankment IBK can be disposed in the opening defined by the outer embankment OBK and can be spaced apart from the outer embankment OBK.

[0123] According to embodiments of this disclosure, the inner embankment portion IBK may include a first inner embankment portion IBK1 and a second inner embankment portion IBK2. The first inner embankment portion IBK1 and the second inner embankment portion IBK2 may be arranged such that the first inner embankment portion IBK1 and the second inner embankment portion IBK2 are spaced apart from each other along a first direction DR1. Although the inner embankment portion IBK included in a sub-pixel SPX in the figures includes two inner embankment portions IBK1 and IBK2 spaced apart from each other, the inner embankment portion IBK may include three or more inner embankment portions IBK.

[0124] The electrode layer 300 may be disposed on the inner embankment portion IBK. The electrode layer 300 may include a first electrode 310 and a second electrode 320.

[0125] The first electrode 310 may be disposed on the first inner embankment portion IBK1 to cover the first inner embankment portion IBK1. The second electrode 320 may be disposed on the second inner embankment portion IBK2 to cover the second inner embankment portion IBK2. The first electrode 310 and the second electrode 320 may be electrically insulated from each other.

[0126] The light-emitting element ED can be disposed between the first inner dam portion IBK1 and the second inner dam portion IBK2. The light-emitting element ED can be disposed between the first inner dam portion IBK1 and the second inner dam portion IBK2, such that the ends of the light-emitting element ED are respectively disposed on the first electrode 310 and the second electrode 320. Multiple light-emitting elements ED can be disposed in the emission region EMA of each of the sub-pixels SPX.

[0127] A first end of the light-emitting element ED may be electrically connected to a first electrode 310, and a second end of the light-emitting element ED may be electrically connected to a second electrode 320. Each of the plurality of light-emitting elements ED may include an active layer 36 (see [link to relevant documentation]). Figure 9 It can emit light when an electrical signal is applied through the first electrode 310 and the second electrode 320.

[0128] According to embodiments of this disclosure, the light-emitting element ED disposed in each of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 may include an active layer 36 having the same material to emit light of the same color. In this case, the light emitted from each of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 may have the same color. For example, the plurality of light-emitting elements ED may emit light of a third color or blue light having a peak wavelength in the range of 440 nm to 480 nm. Each of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 may emit light of a third color or blue light.

[0129] According to some other embodiments, the light-emitting element ED disposed in each of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 may include an active layer 36 of different materials to emit light of different colors. In this case, the light emitted from each of the first emission region EMA1, the second emission region EMA2, and the third emission region EMA3 may be of different colors.

[0130] The second display substrate 20 may be disposed above the first display substrate 10 and facing the first display substrate 10 (e.g., it may be opposite the first display substrate 10 relative to the fill layer 50). The second display substrate 20 may include a second base substrate 210, a color filter layer CF disposed on the surface of the second base substrate 210 facing the first base substrate 110, and color control layers WCL and TPL.

[0131] The cross-sectional structure of the second display substrate 20 will be described in the accompanying drawings from top to bottom (i.e., in the direction opposite to the third direction DR3). The second base substrate 210 may be a transparent substrate. The second base substrate 210 may include a transparent insulating material such as glass and quartz. The second base substrate 210 may be a rigid substrate. However, the second base substrate 210 is not limited to those listed above. The second base substrate 210 may include a plastic such as polyimide (PI) and may have flexible properties such that it can be buckled, bent, folded, or rolled.

[0132] The second base substrate 210 can be of the same type as the first base substrate 110, or it can have different materials, thicknesses, transmittances, etc. For example, the second base substrate 210 can have a higher transmittance than the first base substrate 110. The second base substrate 210 can be thicker or thinner than the first base substrate 110.

[0133] The light-absorbing member UAB can be disposed along the boundary of each of the sub-pixels SPX on the surface of the second base substrate 210 facing the first base substrate 110. The light-absorbing member UAB can overlap with the outer embankment OBK of the first display substrate 10 on the third direction DR3, and can be disposed in the blocking region BA.

[0134] The light-absorbing member UAB may include an opening through which the surface of the second base substrate 210 overlaps with the emitting region EMA (or the transmissive region TA). The transmissive region TA and the blocking region BA may be distinguished by the light-absorbing member UAB and its opening. That is, the light-absorbing member UAB may be disposed along the boundary of the sub-pixel SPX to define the transmissive region TA and the blocking region BA of the second display substrate 20.

[0135] The light-absorbing member UAB can be formed with an inclined side surface on the surface of the second base substrate 210. The transmission region TA and the blocking region BA of the second display substrate 20 can be defined by an opening defined by the inclined side surface of the light-absorbing member UAB. In cross-section, the transmission region TA and the blocking region BA can be defined based on the upper side edge of the light-absorbing member UAB, but this disclosure is not limited thereto.

[0136] The light-absorbing component UAB can not only block the emission of light from the display device 1, but also suppress the reflection of external light. The light-absorbing component UAB may include organic materials.

[0137] According to embodiments of this disclosure, the light-absorbing component UAB may include a light-absorbing material that absorbs light in the visible light wavelength range. For example, the light-absorbing component UAB may be a light-blocking component.

[0138] According to another embodiment, the light-absorbing member UAB can absorb light from a specific wavelength range within the visible light wavelength range and can transmit light from other wavelength ranges. For example, the light-absorbing member UAB may comprise the same material as the color filter layer CF, which will be described later. For example, the light-absorbing member UAB may be made of the same material as the third color filter CF3 (see...). Figure 6 They are made of the same material. In some embodiments, the light-absorbing component UAB can be integrally formed with the third color filter CF3.

[0139] A color filter layer CF can be disposed on the surface of the second base substrate 210 on which a light-absorbing member UAB is disposed. The color filter layer CF can block light of colors other than the desired color of each of the sub-pixels SPX from being emitted to the outside of the display device 1.

[0140] The color filter layer CF can be disposed on the surface of the second base substrate 210 exposed through the opening of the light-absorbing member UAB. Furthermore, the color filter layer CF can be partially disposed on the adjacent light-absorbing member UAB.

[0141] The color filter layer CF may include a first color filter CF1, a second color filter CF2, and a third color filter CF3.

[0142] The first color filter CF1 can be set in the first transmission area TA1 of the first sub-pixel SPX1, the second color filter CF2 can be set in the second transmission area TA2 of the second sub-pixel SPX2, and the third color filter CF3 can be set in the third transmission area TA3 of the third sub-pixel SPX3.

[0143] The first color filter CF1, the second color filter CF2, and the third color filter CF3 may include colorants such as dyes and pigments that absorb wavelengths other than a given color wavelength. The first color filter CF1 may selectively transmit light of a first color (e.g., red light) and may block and absorb light of a second color (e.g., green light) and a third color (e.g., blue light). The second color filter CF2 may selectively transmit light of a second color (e.g., green light) and may block and absorb light of the first color (e.g., red light) and the third color (e.g., blue light). The third color filter CF3 may selectively transmit light of a third color (e.g., blue light) and may block and absorb light of the first color (e.g., red light) and the second color (e.g., green light). For example, the first color filter CF1 may be a red color filter, the second color filter CF2 may be a green color filter, and the third color filter CF3 may be a blue color filter.

[0144] Although Figure 6 In the example shown, adjacent color filters are spaced apart from each other on the light-absorbing member UAB, but this disclosure is not limited thereto. Adjacent color filters may partially overlap each other on the light-absorbing member UAB.

[0145] A first capping layer CPL1 may be provided on the color filter layer CF. The first capping layer CPL1 can cover the color filter layer CF. The first capping layer CPL1 can prevent the color filter layer CF from being damaged or contaminated by impurities such as moisture and air from the outside. In addition, the first capping layer CPL1 can prevent the colorant of the color filter layer CF from diffusing into other components.

[0146] The first capping layer CPL1 may include an inorganic material. For example, the first capping layer CPL1 may include at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, and silicon nitride.

[0147] An anti-color mixing member MBM may be disposed on the first capping layer CPL1 within the blocking region BA. The anti-color mixing member MBM may be disposed on the first capping layer CPL1 along the boundary of the sub-pixel SPX. The anti-color mixing member MBM may overlap with the outer embankment OBK of the first display substrate 10 and the light-absorbing member UAB of the second display substrate 20. The anti-color mixing member MBM may define the transmission region TA and the blocking region BA together with the light-absorbing member UAB. In cross-section, the transmission region TA and the blocking region BA may be defined based on the upper side edge of the anti-color mixing member MBM, but this disclosure is not limited thereto.

[0148] The anti-color mixing component MBM can be made of a material that can block light transmission and prevent color mixing that may occur when light enters (or leaks) into adjacent sub-pixels SPX.

[0149] The anti-mixing component MBM may include openings exposing a first color filter CF1, a second color filter CF2, and a third color filter CF3 respectively disposed in a first transmission region TA1, a second transmission region TA2, and a third transmission region TA3. The color control layers WCL and TPL, which will be described later, may be disposed in the space exposed by the openings of the anti-mixing component MBM.

[0150] According to embodiments of this disclosure, color control layers WCL and TPL can be formed via an inkjet printing process using an anti-bleeding component MBM as a separator. The anti-bleeding component MBM can guide the ink composition for stably forming the color control layers WCL and TPL at desired locations. The anti-bleeding component MBM may include, but is not limited to, photosensitive organic materials.

[0151] Color control layers WCL and TPL can be disposed within a space surrounded by anti-mixing members MBM. The color control layers WCL and TPL may include a wavelength conversion layer WCL and a transparent pattern TPL. The wavelength conversion layer WCL converts the wavelength of light incident on the color control layers WCL and TPL, while the transparent pattern TPL transmits light incident on the color control layers WCL and TPL without changing the wavelength of the light. The wavelength conversion layer WCL or the transparent pattern TPL can be separately disposed in each of the sub-pixels SPX. The wavelength conversion layer WCL or the transparent pattern TPL can overlap with the emission region EMA and the transmission region TA in the thickness direction. Wavelength conversion layers WCL and / or transparent pattern TPL disposed adjacent to each other can be spaced apart by anti-mixing members MBM disposed in the blocking region BA.

[0152] The wavelength conversion layer (WCL) and the transparent pattern (TPL) can be disposed on the first capping layer (CPL1). In some embodiments, as described above, the wavelength conversion layer (WCL) and the transparent pattern (TPL) can be formed by inkjet printing. However, it should be understood that this disclosure is not limited thereto. The wavelength conversion layer (WCL) and the transparent pattern (TPL) can be formed by coating a photosensitive material, exposing it to light, and developing and patterning it. In the following description, it is assumed that the wavelength conversion layer (WCL) and the transparent pattern (TPL) are formed by inkjet printing.

[0153] A wavelength conversion layer (WCL) can be disposed in sub-pixels SPX having a color different from the color of light incident from the first display substrate 10, in order to change the wavelength. A transparent pattern (TPL) can be disposed in sub-pixels SPX having a color corresponding to the color of light incident from the first display substrate 10. According to some embodiments, light of a third color is incident from each of the sub-pixels SPX of the first display substrate 10, and the wavelength conversion layer WCL is disposed in the first sub-pixel SPX1 and the second sub-pixel SPX2, while the transparent pattern TPL is disposed in the third sub-pixel SPX3. As another example, when light of a color different from the color of the sub-pixel SPX is incident from the sub-pixels SPX of the first display substrate 10, only the wavelength conversion layer WCL can be disposed without the transparent pattern TPL. As another example, when light of a color corresponding to the color of the sub-pixel SPX is incident from the sub-pixels SPX of the first display substrate 10 respectively, only the transparent pattern TPL can be disposed without the wavelength conversion layer WCL.

[0154] According to embodiments of the present disclosure, the wavelength conversion layer WCL may include a first wavelength conversion pattern WCL1 disposed in a first sub-pixel SPX1 and a second wavelength conversion pattern WCL2 disposed in a second sub-pixel SPX2.

[0155] A first wavelength conversion pattern WCL1 can be disposed in the first sub-pixel SPX1 within a first transmissive region TA1 separated by an anti-mixing member MBM. The first wavelength conversion pattern WCL1 can overlap with a first color filter CF1 disposed in the first transmissive region TA1. The first wavelength conversion pattern WCL1 can convert light incident from the first display substrate 10 with a wavelength having a third color into light with a wavelength having a first color different from the third color, and then output it. For example, the first wavelength conversion pattern WCL1 can convert blue light incident from the first display substrate 10 into red light, and then output it.

[0156] The first wavelength conversion pattern WCL1 may include a first base resin BRS1 and first wavelength conversion particles WCP1 dispersed in the first base resin BRS1. The first wavelength conversion pattern WCL1 may also include first scattering particles SCP1 dispersed in the first base resin BRS1.

[0157] The second wavelength conversion pattern WCL2 can be disposed in the second sub-pixel SPX2 within the second transmission region TA2 separated by the anti-mixing member MBM. The second wavelength conversion pattern WCL2 can overlap with the second color filter CF2 disposed in the second transmission region TA2. The second wavelength conversion pattern WCL2 can convert light incident from the first display substrate 10 with a wavelength of a third color into light with a wavelength of a second color different from the third color, and then output it. For example, the second wavelength conversion pattern WCL2 can convert blue light incident from the first display substrate 10 into green light, and then output it.

[0158] The second wavelength conversion pattern WCL2 may include a second base resin BRS2 and second wavelength conversion particles WCP2 dispersed in the second base resin BRS2. The second wavelength conversion pattern WCL2 may also include second scattering particles SCP2 dispersed in the second base resin BRS2.

[0159] A transparent pattern TPL can be disposed within the third sub-pixel SPX3 in the third transmission region TA3 defined by the anti-mixing member MBM. The transparent pattern TPL can overlap with the third color filter CF3 disposed in the third transmission region TA3. The transparent pattern TPL can output light of a third color incident from the first display substrate 10 without altering the wavelength of the light. For example, the transparent pattern TPL transmits blue light incident from the first display substrate 10 while maintaining the wavelength.

[0160] The transparent pattern TPL may include a third base resin BRS3. The transparent pattern TPL may also include third scattering particles SCP3 dispersed in the third base resin BRS3.

[0161] The first base resin BRS1, the second base resin BRS2, ​​and the third base resin BRS3 may comprise transparent organic materials. For example, the first base resin BRS1, the second base resin BRS2, ​​and the third base resin BRS3 may comprise epoxy resin, acrylic resin, calorie resin, imide resin, etc. The first base resin BRS1, the second base resin BRS2, ​​and the third base resin BRS3 may be made from the same material, but are not limited thereto.

[0162] The first scattering particle SCP1, the second scattering particle SCP2, and the third scattering particle SCP3 may have a refractive index different from that of the first base resin BRS1, the second base resin BRS2, ​​and the third base resin BRS3. The first scattering particle SCP1, the second scattering particle SCP2, and the third scattering particle SCP3 may comprise metal oxide particles or organic particles. Examples of metal oxides may include titanium dioxide (TiO2), zirconium dioxide (ZrO2), and aluminum oxide (Al). xO y Materials used for organic particles include indium oxide (In₂O₃), zinc oxide (ZnO), and tin oxide (SnO₂). Examples of materials for organic particles may include acrylic resins, polyurethane resins, etc. The first scattering particle SCP1, the second scattering particle SCP2, and the third scattering particle SCP3 may be made of the same material, but are not limited to this.

[0163] The first wavelength conversion particle WCP1 can convert light of a third color into light of a first color, and the second wavelength conversion particle WCP2 can convert light of a third color into light of a second color. For example, the first wavelength conversion particle WCP1 can be a material that converts blue light into red light, and the second wavelength conversion particle WCP2 can be a material that converts blue light into green light. The first wavelength conversion particle WCP1 and the second wavelength conversion particle WCP2 can be quantum dots, quantum rods, phosphors, etc. Quantum dots can include group IV nanocrystals, group II-VI compound nanocrystals, group III-V compound nanocrystals, group IV-VI compound nanocrystals, or combinations thereof.

[0164] A second capping layer CPL2 is disposed on the color control layers WCL and TPL. The second capping layer CPL2 may be made of an inorganic material. The second capping layer CPL2 may include a material selected from the materials listed above as the materials of the first capping layer CPL1. The second capping layer CPL2 and the first capping layer CPL1 may be made of the same material, but are not limited thereto.

[0165] The second capping layer CPL2 can cover the wavelength conversion patterns WCL1 and WCL2 and the transparent pattern TPL. The second capping layer CPL2 can cover one surface and their side surfaces of each of the wavelength conversion patterns WCL1 and WCL2 and the transparent pattern TPL. The second capping layer CPL2 can contact the anti-mixing component MBM in the space between adjacent color control layers WCL and TPL. The second capping layer CPL2 can have a shape consistent with the surface height difference formed by the color control layers WCL and TPL.

[0166] A filler layer 50 can be inserted between the first display substrate 10 and the second display substrate 20. The space between the first display substrate 10 and the second display substrate 20 can be filled with the filler layer 50, and the first display substrate 10 and the second display substrate 20 can be connected to each other through the filler layer 50. The filler layer 50 can be disposed between the outer rim portion OBK of the first display substrate 10 and the second capping layer CPL2 of the second display substrate 20. The filler layer 50 can be made of Si-based organic materials, epoxy-based organic materials, etc., but is not limited thereto.

[0167] Although Figure 6In the example shown, the display device 1 includes a first display substrate 10, a second display substrate 20 facing (or opposite) the first display substrate 10, and a filler layer 50 disposed between the first display substrate 10 and the second display substrate 20; however, this disclosure is not limited thereto. In some other embodiments, the second display substrate 20 may be stacked on top of the first display substrate 10 in the display device 1, and the filler layer 50 and sealing member 70 may be eliminated. In this case, multiple layers included in the second display substrate 20 (e.g., a second capping layer CPL2, an anti-color mixing member MBM, color control layers WCL and TPL, and a light-absorbing member UAB) may be stacked on the first display substrate 10. Reference will be made below. Figure 31 and Figure 32 Provide a detailed description.

[0168] Figure 7 yes Figure 6 The first plan view of the display substrate.

[0169] refer to Figure 7 As described above, the emission region EMA refers to the area where light generated in the first display substrate 10 is emitted to the outside of the first display substrate 10, and may include the area where a plurality of light-emitting elements ED are arranged, and its peripheral area or periphery. For example, the emission region EMA may also include the area where light emitted from the light-emitting elements ED is reflected or refracted by other elements to be emitted to the outside of the first display substrate 10.

[0170] Each of the sub-pixels SPX may also include a cut region CBA disposed in the non-emitting region NEM. In each of the sub-pixels SPX, the cut region CBA may be disposed on one side of the emitting region EMA in the second direction DR2.

[0171] A portion of each of the first electrode 310 and the second electrode 320 disposed in each of the sub-pixels SPX may be disposed in the cut region CBA. The first electrode 310 and the second electrode 320 disposed in sub-pixels SPX adjacent to each other in the second direction DR2 may be separated at the cut region CBA. However, it should be understood that this disclosure is not limited thereto. In some other embodiments, the first electrode 310 and the second electrode 320 may not be separated at the cut region CBA of each of the sub-pixels SPX, but may extend beyond the adjacent sub-pixels SPX in the second direction DR2. In still some other embodiments, only one of the first electrode 310 and the second electrode 320 may be separated at the cut region CBA of each of the sub-pixels SPX.

[0172] Figure 8 It is along Figure 7A cross-sectional view of the first display substrate taken by lines IIIa-IIIa', IIIb-IIIb', and IIIc-IIIc'.

[0173] In the following text, reference will be made to Figure 7 and Figure 8 The structure of the first display substrate 10 is described in detail.

[0174] refer to Figure 8 The first display substrate 10 may include a first base substrate 110, a circuit layer CCL disposed on the first base substrate 110, and a light-emitting element layer disposed on the circuit layer CCL.

[0175] The circuit layer CCL may include multiple transistors (TRs), multiple conductive layers, multiple insulating layers, and semiconductor layers.

[0176] A transistor TR can be disposed on the first base substrate 110 and can form a corresponding pixel circuit. For example, the transistor TR can be a driving transistor or a switching transistor for the pixel circuit. Figure 8 In the diagram, only the driving transistor is shown as transistor TR.

[0177] The transistor TR may include an active material layer ACT, a gate electrode GE, a first source / drain electrode SD1, and a second source / drain electrode SD2.

[0178] A bottom metal layer (BML) may be disposed on the first base substrate 110. The bottom metal layer BML may be disposed below the channel region of the active material layer ACT of the transistor TR of the first display substrate 10, so as to at least cover or overlap the channel region of the active material layer ACT on the third-direction DR3. The bottom metal layer BML may be a light-blocking layer that protects the active material layer ACT of the semiconductor layer from external light. In some embodiments, the bottom metal layer BML may be eliminated.

[0179] A buffer layer 120 may be disposed above the bottom metal layer BML. The buffer layer 120 may be configured to cover the entire surface of the first base substrate 110 on which the bottom metal layer BML is disposed. The buffer layer 120 can protect the transistor TR from moisture that permeates through the first base substrate 110 (which is susceptible to moisture penetration). The buffer layer 120 may comprise a plurality of inorganic layers alternately stacked on top of each other. For example, the buffer layer 120 may be composed of silicon oxide (SiO2). x ), silicon nitride (SiN) x ) and silicon nitride oxide (SiO) x N y It consists of multiple layers of inorganic layers, at least one of which are stacked alternately on top of each other.

[0180] A semiconductor layer is disposed on the buffer layer 120. The semiconductor layer may include the active material layer ACT of the transistor TR. The active material layer ACT may be configured to overlap with the bottom metal layer BML on the third-direction DR3.

[0181] The semiconductor layer may include polycrystalline silicon, oxide semiconductors, etc. According to embodiments of this disclosure, when the semiconductor layer includes polycrystalline silicon, the semiconductor layer can be formed by crystallizing amorphous silicon. In another embodiment, the semiconductor layer may include an oxide semiconductor. For example, the oxide semiconductor may be indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium oxide (IGO), indium zinc tin oxide (IZTO), indium gallium zinc oxide (IGZO), indium gallium tin oxide (IGTO), indium gallium zinc tin oxide (IGZTO), etc., but is not limited thereto.

[0182] A gate insulator 130 may be disposed on the active material layer ACT. The gate insulator 130 may be disposed on a buffer layer 120 on which the active material layer ACT is disposed. The gate insulator 130 may serve as the gate insulating layer of a transistor TR. The gate insulator 130 may be made of materials such as silicon oxide (SiO2). x ), silicon nitride (SiN) x ) and silicon nitride oxide (SiO) x N y It can be composed of inorganic layers of inorganic materials, or it can be formed as a stack of these materials.

[0183] A gate conductive layer 140 may be disposed on the gate insulator 130. The gate conductive layer 140 may include the gate electrode GE of the transistor TR and the first capacitor electrode CSE of the storage capacitor.

[0184] The gate electrode GE can be configured such that it overlaps with the channel region of the active material layer ACT in the thickness direction of the first display substrate 10. The first capacitor electrode CSE can be configured such that it overlaps with the second source / drain electrode SD2 of the transistor TR, which will be described later, in the thickness direction of the first display substrate 10. The first capacitor electrode CSE can be configured such that it overlaps with the second source / drain electrode SD2 on the third direction DR3, and a storage capacitor can be formed between the first capacitor electrode CSE and the second source / drain electrode SD2. According to some embodiments of this disclosure, the first capacitor electrode CSE and the gate electrode GE can be formed as a monolayer. A portion of the monolayer may include the gate electrode GE, and another portion may include the first capacitor electrode CSE.

[0185] An interlayer dielectric layer 150 is disposed on the gate conductive layer 140. The interlayer dielectric layer 150 may be disposed on the gate insulator 130 on which the gate conductive layer 140 is formed. The interlayer dielectric layer 150 may include, for example, silicon oxide (SiO2).x ), silicon nitride (SiN) x ) and silicon nitride oxide (SiO) x N y Inorganic insulating materials.

[0186] A first data conductive layer 160 is disposed on the interlayer dielectric layer 150. The first data conductive layer 160 may include a data line DTL and a first source / drain electrode SD1 and a second source / drain electrode SD2 of a transistor TR.

[0187] The first source / drain electrode SD1 and the second source / drain electrode SD2 can be electrically connected to the two end regions (e.g., doped regions of the active material layer ACT) of the transistor TR through corresponding contact holes penetrating the interlayer dielectric layer 150 and the gate insulator 130, respectively. Furthermore, the second source / drain electrode SD2 of the transistor TR can be electrically connected to the bottom metal layer BML through contact holes penetrating the interlayer dielectric layer 150, the gate insulator 130, and the buffer layer 120.

[0188] The data line DTL can apply a data signal to another transistor included in the first display substrate 10. Although not shown in the figures, the data line DTL can be connected to the source / drain electrode of the other transistor.

[0189] A passivation layer 170 is disposed on the first data conductive layer 160. The passivation layer 170 covers and protects the first data conductive layer 160. The passivation layer 170 may include materials such as silicon oxide (SiO2). x ), silicon nitride (SiN) x ) and silicon nitride oxide (SiO) x N y Inorganic insulating materials.

[0190] A second data conductive layer 180 is disposed on the passivation layer 170. The second data conductive layer 180 may include a first voltage line VL1, a second voltage line VL2, and a first conductive pattern CDP.

[0191] A high-level voltage (or a first power supply voltage) can be applied to a first voltage line VL1, and a low-level voltage (or a second power supply voltage) lower than the high-level voltage (first power supply voltage) of the first voltage line VL1 can be applied to a second voltage line VL2. The first voltage line VL1 can be connected to the first source / drain electrode SD1 of the transistor TR through a contact hole passing through the passivation layer 170. The second voltage line VL2 can be electrically connected to the second electrode 320 through the second contact hole CT2 to apply a low-level voltage (e.g., the second power supply voltage) to the second electrode 320.

[0192] The first conductive pattern CDP can be electrically connected to the second source / drain electrode SD2 of the transistor TR through a contact hole passing through the passivation layer 170. The first conductive pattern CDP can be electrically connected to the first electrode 310 through a contact hole CT1 to transfer the first power supply voltage applied from the first voltage line VL1 to the first electrode 310.

[0193] A via layer 190 is disposed above the second data conductive layer 180. The via layer 190 may be disposed on the passivation layer 170 on which the second data conductive layer 180 is disposed. The via layer 190 may provide a flat surface. The via layer 190 may include an organic insulating material, such as an organic material such as polyimide (PI).

[0194] The light-emitting element layer can be disposed on the through-hole layer 190, and may include an outer embankment OBK, a first inner embankment IBK1 and a second inner embankment IBK2, a plurality of light-emitting elements ED, a first electrode 310 and a second electrode 320, a contact electrode 400, and a plurality of insulating layers 510, 520, 530 and 540.

[0195] refer to Figure 7 and Figure 8 The first inner embankment IBK1 and the second inner embankment IBK2 can be set in the emission region EMA of each of the sub-pixels SPX.

[0196] When viewed from above, the first inner dam portion IBK1 may be positioned on the upper left side of the emission region EMA. The first inner dam portion IBK1 may be spaced apart from the outer dam portion OBK that defines the emission region EMA. When viewed from above, the shape of the first inner dam portion IBK1 may extend in the second direction DR2 and its two ends may be spaced apart from the outer dam portion OBK, such that the first inner dam portion IBK1 does not extend in the second direction DR2 to the other sub-pixel SPX adjacent to it.

[0197] When viewed from above, the second inner beam IBK2 may be positioned on the upper right side of the emission region EMA. The second inner beam IBK2 may be spaced apart from the outer beam OBK that defines the emission region EMA. When viewed from above, the shape of the second inner beam IBK2 may extend in the second direction DR2 and its two ends may be spaced apart from the outer beam OBK, such that the second inner beam IBK2 does not extend in the second direction DR2 to the other sub-pixel SPX adjacent to it.

[0198] The first inner embankment portion IBK1 and the second inner embankment portion IBK2 may be spaced apart from each other and face each other in the first direction DR1. Multiple light-emitting elements (EDs) may be disposed in the space between the first inner embankment portion IBK1 and the second inner embankment portion IBK2. As described later, the arrangement of the multiple light-emitting elements (EDs) disposed in the emission region EMA can be adjusted by adjusting the size, shape, and / or arrangement of the first inner embankment portion IBK1 and the second inner embankment portion IBK2.

[0199] The inner embankment portion IBK can be directly disposed on the via layer 190. The inner embankment portion IBK can have a structure that at least partially protrudes from the upper surface of the via layer 190. Each protruding portion of the inner embankment portion IBK can have an inclined side surface. Because the inner embankment portion IBK includes inclined side surfaces, light emitted from the light-emitting element ED and traveling toward the side surface of the inner embankment portion IBK can be guided upwards (e.g., to the display side). As described above, the inner embankment portion IBK can provide space for the light-emitting element ED and can also serve as a reflective partition wall to change the direction of travel of light emitted from the light-emitting element ED toward the display side.

[0200] Although the side surface of the inner embankment IBK has an inclined linear shape in the accompanying drawings, this disclosure is not limited thereto. For example, the side surface (or outer surface) of the inner embankment IBK may have a curved semi-circular or semi-elliptical shape.

[0201] The inner embankment IBK may include, but is not limited to, organic insulating materials such as polyimide (PI).

[0202] Although two inner embankment portions IBK are depicted in the attached diagram within a single sub-pixel SPX, the number of inner embankment portions IBK included in a single sub-pixel SPX is not limited to two. The number of inner embankment portions IBK included in a single sub-pixel SPX can vary depending on the number of electrodes included in the sub-pixel SPX.

[0203] The first electrode 310 can be disposed on the first inner embankment portion IBK1. The first electrode 310 can overlap with the first inner embankment portion IBK1 on the third direction DR3.

[0204] When viewed from above, the first electrode 310 may extend in the second direction DR2, and the width of the first electrode 310 in the first direction DR1 may be greater than the width of the first inner embankment IBK1 in the first direction DR1, so as to completely cover the first inner embankment IBK1. The first electrode 310 may overlap with the first inner embankment IBK1, and may extend in the second direction DR2 to overlap with a portion of the outer embankment OBK.

[0205] The second electrode 320 can be disposed on the second inner embankment portion IBK2. The second electrode 320 can overlap with the second inner embankment portion IBK2 in the third direction DR3. The second electrode 320 can be spaced apart from the first electrode 310 in the first direction DR1.

[0206] When viewed from above, the second electrode 320 may extend in the second direction DR2, and the width of the second electrode 320 in the first direction DR1 may be greater than the width of the second inner embankment IBK2 in the first direction DR1, so as to completely cover the second inner embankment IBK2. The second electrode 320 may overlap with the second inner embankment IBK2, and may extend in the second direction DR2 to overlap with a portion of the outer embankment OBK.

[0207] The first electrode 310 and the second electrode 320 may extend in each of the sub-pixels SPX along the second direction DR2, and they may be separated from the other electrodes 310 and 320 of adjacent sub-pixels SPX along the second direction DR2 at the cut region CBA of each of the sub-pixels SPX. The first electrode 310 and the second electrode 320 may be formed during the process of manufacturing the first display substrate 10, after the process of setting the light-emitting element ED, via a process of disconnecting the electrodes 310 and 320 at the cut region CBA.

[0208] Each of the first electrode 310 and the second electrode 320 may be electrically connected to the light-emitting element ED. A suitable voltage (e.g., a set or predetermined voltage) may be applied between the first electrode 310 and the second electrode 320, causing the light-emitting element ED to emit light. For example, multiple electrodes 310 and 320 may be electrically connected to the light-emitting element ED via a contact electrode 400, which will be described later, and electrical signals applied to the first electrode 310 and the second electrode 320 may be transmitted to the light-emitting element ED via the contact electrode 400.

[0209] The first electrode 310 and the second electrode 320 can be used to form an electric field in the sub-pixel SPX to align the light-emitting element ED. The light-emitting element ED can be disposed between the first inner embankment portion IBK1 and the second inner embankment portion IBK2, such that their ends are respectively disposed on the first electrode 310 and the second electrode 320 by the electric field formed between the first electrode 310 and the second electrode 320.

[0210] Electrode layer 300 (e.g., including first electrode 310 and second electrode 320) may include a transparent conductive material. For example, electrode layer 300 may include materials such as indium tin oxide (ITO), indium zinc oxide (IZO), and indium tin zinc oxide (ITZO), but is not limited thereto. In some embodiments, electrode layer 300 may include a conductive material with high reflectivity. For example, electrode layer 300 may include metals such as silver (Ag), copper (Cu), and / or aluminum (Al) as a material with high reflectivity. In this case, electrode layer 300 may reflect light emitted from the light-emitting element ED and traveling toward the side surface of each of the inner embankments IBK1 and IBK2 in each of the sub-pixels SPX toward the display side. However, it should be understood that this disclosure is not limited thereto. Electrode layer 300 may have a structure in which one or more layers of transparent conductive material and highly reflective metal layers are stacked, or it may be composed of a single layer including them. In an embodiment, the electrode layer 300 may have a stacked structure of ITO / silver (Ag) / ITO, ITO / Ag / IZO or ITO / Ag / ITZO / IZO, or it may be an alloy including aluminum (Al), nickel (Ni), lanthanum (La) and the like.

[0211] A first insulating layer 510 may be disposed on the electrode layer 300. The first insulating layer 510 is disposed on the first electrode 310 and the second electrode 320 such that at least a portion of each of the first electrode 310 and the second electrode 320 is exposed. The first insulating layer 510 may be completely formed on the via layer 190 and the region between the first electrode 310 and the second electrode 320 such that at least the portions of the first electrode 310 and the second electrode 320 that overlap with the first inner embankment portion IBK1 and the second inner embankment portion IBK2, respectively, are exposed.

[0212] The first insulating layer 510 protects the first electrode 310 and the second electrode 320 and insulates the first electrode 310 and the second electrode 320 from each other. In addition, the first insulating layer 510 prevents the light-emitting element ED disposed on the first insulating layer 510 from contacting other elements and / or being damaged.

[0213] An outer diaphragm portion OBK may be disposed on the first insulating layer 510. The height of the outer diaphragm portion OBK may be greater than the height of the inner diaphragm portion IBK. Because the height of the outer diaphragm portion OBK is greater than the height of the inner diaphragm portion IBK, ink spillage to adjacent sub-pixels SPX can be prevented during the inkjet printing process of the manufacturing process of the first display substrate 10, as described above. The outer diaphragm portion OBK may include, but is not limited to, polyimide (PI).

[0214] Multiple light-emitting elements (EDs) can be disposed in the space between the first inner embankment (IBK1) and the second inner embankment (IBK2) within the emission region (EMA). The alignment of the multiple EDs within the emission region (EMA) can be adjusted using the shape and arrangement of the first inner embankment (IBK1) and the second inner embankment (IBK2) to increase the amount of light emitted from the EDs and incident on the color control layers (WCL) and (TPL) and / or the color filter layer (CF). This will be described in more detail below with reference to other accompanying drawings.

[0215] The light-emitting elements (EDs) can have a shape extending in one direction (e.g., a first direction DR1). When viewed from above, the EDs can be spaced apart from each other along a second direction DR2 extending from the first electrode 310 and the second electrode 320, and can be aligned substantially parallel to each other. The distance between multiple EDs is not particularly limited.

[0216] The light-emitting element ED disposed between the first electrode 310 and the second electrode 320 extends in a direction substantially perpendicular to the extension directions of the first electrode 310 and the second electrode 320, or the extension directions of the first inner embankment portion IBK1 and the second inner embankment portion IBK2. For example, the first electrode 310 and the second electrode 320 may extend in a second direction DR2, while the light-emitting element ED disposed between the first electrode 310 and the second electrode 320 may extend in a first direction DR1. However, it should be understood that this disclosure is not limited thereto. The light-emitting element ED may be oriented obliquely relative to the extension directions of the first electrode 310 and the second electrode 320.

[0217] The second insulating layer 520 may be partially disposed on the light-emitting element ED disposed between the first electrode 310 and the second electrode 320. The second insulating layer 520 may be configured to partially surround the outer surface of the light-emitting element ED. The second insulating layer 520 is disposed on the light-emitting element ED and may expose one end and the opposite end of each of the light-emitting elements ED. The second insulating layer 520 may protect and fix the light-emitting element ED during the process of manufacturing the first display substrate 10, so that the light-emitting element ED is not lost.

[0218] The contact electrode 400 may include a first contact electrode 410 and a second contact electrode 420. The first contact electrode 410 and the second contact electrode 420 may be spaced apart from each other and face each other in a first direction DR1. The first contact electrode 410 and the second contact electrode 420 may be electrically insulated from each other.

[0219] A first contact electrode 410 may be disposed on the first electrode 310 and may contact the portion of the first electrode 310 exposed by the first insulating layer 510. The first contact electrode 410 may contact the first end of the light-emitting element ED exposed by the second insulating layer 520. When viewed from above, the first contact electrode 410 may extend in the second direction DR2. The first contact electrode 410 may contact the first end of the light-emitting element ED and the first electrode 310 exposed by the first insulating layer 510 to connect the first electrode 310 to the first end of the light-emitting element ED.

[0220] A third insulating layer 530 is disposed on the first contact electrode 410. The third insulating layer 530 may be configured to completely cover the first contact electrode 410 and may be configured to expose the second end of the light-emitting element ED, such that the light-emitting element ED contacts the second contact electrode 420. The third insulating layer 530 can electrically insulate the first contact electrode 410 from the second contact electrode 420.

[0221] The second contact electrode 420 may be disposed on the second electrode 320 and may contact the portion of the second electrode 320 exposed by the first insulating layer 510. The second contact electrode 420 may contact the second end of the light-emitting element ED exposed by the second insulating layer 520 and the third insulating layer 530. When viewed from above, the second contact electrode 420 may extend in the second direction DR2. The second contact electrode 420 may contact the second end of the light-emitting element ED and the second electrode 320 exposed by the first insulating layer 510 to connect the second electrode 320 to the second end of the light-emitting element ED.

[0222] The first contact electrode 410 and the second contact electrode 420 may comprise conductive materials. For example, the first contact electrode 410 and the second contact electrode 420 may comprise at least one of ITO, IZO, ITZO, and aluminum (Al). For example, the first contact electrode 410 and the second contact electrode 420 may comprise transparent conductive materials, but are not limited thereto.

[0223] The fourth insulating layer 540 can be completely disposed on the first base substrate 110. The fourth insulating layer 540 can protect the components disposed on the first base substrate 110 from the influence of the external environment.

[0224] Figure 9 This is a perspective cross-sectional view showing a light-emitting element according to an embodiment of the present disclosure.

[0225] refer to Figure 9The light-emitting element (ED) is a particulate element and may have a rod-shaped or cylindrical shape with a desired aspect ratio (e.g., a set or predetermined aspect ratio). The ED may have a shape extending in the X direction, and the length h4 of the ED may be greater than the diameter of the ED. The aspect ratio may be in the range of 1.2:1 to 100:1, but is not limited thereto.

[0226] The light-emitting element (ED) can have dimensions ranging from nanometer-scale (from 1 nm to 1 μm) to micrometer-scale (from 1 μm to 1 mm). According to embodiments of this disclosure, both the diameter and length of the ED can be on the nanometer or micrometer scale. In some other embodiments, the diameter of the ED can be on the nanometer scale, while the length can be on the micrometer scale. In some embodiments, the diameter and / or length of some of the ED's light-emitting elements can be on the nanometer scale, while the diameter and / or length of other light-emitting elements can be on the micrometer scale.

[0227] The light-emitting element (ED) can be an inorganic light-emitting element. An inorganic light-emitting element may include multiple semiconductor layers. For example, an inorganic light-emitting element may include a first conductivity type (e.g., n-type) semiconductor layer, a second conductivity type (e.g., p-type) semiconductor layer, and an active semiconductor layer interposed therebetween. The active semiconductor layer may receive electrons and holes from the first conductivity type semiconductor layer and the second conductivity type semiconductor layer, respectively, and the holes and electrons arriving at the active semiconductor layer may combine to emit light.

[0228] According to embodiments of this disclosure, the semiconductor layers can be stacked sequentially along one direction X, which serves as the longitudinal direction of the light-emitting element ED. For example... Figure 9 As shown, the light-emitting element ED may include a first semiconductor layer 31, an active layer 36, and a second semiconductor layer 32 stacked sequentially in the direction X. The first semiconductor layer 31, the active layer 36, and the second semiconductor layer 32 may be the first conductive semiconductor layer, the active semiconductor layer, and the second conductive semiconductor layer described above, respectively.

[0229] The first semiconductor layer 31 may be doped with a dopant of a first conductivity type. The first conductivity type dopant may be Si, Ge, Sn, Se, etc. According to embodiments of this disclosure, the first semiconductor layer 31 may be n-GaN doped with n-type Si. The first semiconductor layer 31 may occupy most of the volume of the light-emitting element ED.

[0230] The second semiconductor layer 32 may be spaced apart from the first semiconductor layer 31, and the active layer 36 is located between the first semiconductor layer 31 and the second semiconductor layer 32. The second semiconductor layer 32 may be doped with a second conductivity type dopant such as Mg, Zn, Ca, and Ba. According to embodiments of the present disclosure, the second semiconductor layer 32 may be p-GaN doped with p-type Mg.

[0231] The active layer 36 may comprise a material having a single quantum well structure or a multiple quantum well structure. As described above, the active layer 36 may emit light in response to an electrical signal applied through the first semiconductor layer 31 and the second semiconductor layer 32 when electron-hole pairs recombine therein. According to embodiments of this disclosure, the active layer 36 comprises AlGaInN as a quantum layer and AlInN as a well layer, and as described above, the active layer 36 may emit blue light having a center wavelength range of 450 nm to 495 nm.

[0232] In some embodiments, the active layer 36 may have a structure in which semiconductor materials with large bandgap energy and semiconductor materials with small bandgap energy are stacked alternately on top of each other, and may include other Group III to Group V semiconductor materials depending on the wavelength range of the emitted light.

[0233] Light emitted from the active layer 36 can exit not only through the outer surface (e.g., the peripheral surface) of the light-emitting element ED in the longitudinal direction, but also through both side surfaces. That is, the direction of light propagation emitted from the active layer 36 is not limited to one direction.

[0234] The light-emitting element (ED) may further include an element electrode layer 37 disposed on the second semiconductor layer 32. The element electrode layer 37 may be in contact with the second semiconductor layer 32. The element electrode layer 37 may be an ohmic contact electrode, but is not limited thereto. The element electrode layer 37 may be a Schottky contact electrode.

[0235] When the two ends of the light-emitting element ED are electrically connected to contact electrodes 410 and 420 to apply an electrical signal to the first semiconductor layer 31 and the second semiconductor layer 32, the element electrode layer 37 can be disposed between the second semiconductor layer 32 and the contact electrodes 410 and / or 420 to reduce the resistance between them. The element electrode layer 37 may include at least one of aluminum (Al), titanium (Ti), indium (In), gold (Au), silver (Ag), indium tin oxide (ITO), indium zinc oxide (IZO), and indium tin zinc oxide (ITZO). The element electrode layer 37 may include a semiconductor material doped with n-type or p-type impurities.

[0236] The light-emitting element (ED) may further include an insulating film 38 surrounding the outer surfaces (e.g., peripheral surfaces) of the first semiconductor layer 31, the second semiconductor layer 32, the active layer 36, and / or the element electrode layer 37. The insulating film 38 may be configured to at least surround the outer surface (e.g., peripheral surface) of the active layer 36 and may extend in the direction X in which the light-emitting element ED extends. The insulating film 38 can protect the aforementioned elements (e.g., the first semiconductor layer 31, the second semiconductor layer 32, the active layer 36, and / or the element electrode layer 37 of the light-emitting element ED). The insulating film 38 may be made of a material with insulating properties and can prevent electrical short circuits that may occur when the active layer 36 comes into contact with the electrodes through which electrical signals are transmitted to the light-emitting element ED. Furthermore, because the insulating film 38 covers the peripheral surface of the active layer 36 and also covers and protects the peripheral surfaces of the first semiconductor layer 31 and the second semiconductor layer 32, a reduction in light emission efficiency can be prevented or reduced.

[0237] According to embodiments of this disclosure, the active layer 36 of the light-emitting element ED can be offset from the central region of the light-emitting element ED in the direction X in which the light-emitting element ED extends, such that the active layer 36 is positioned closer to the side in the direction X. As described above, the first semiconductor layer 31 can be formed to occupy most of the light-emitting element ED. For example, the length h1 of the first semiconductor layer 31 in the direction X can be greater than the length h2 of the second semiconductor layer 32 in the direction X and the length h3 of the element electrode layer 37 in the direction X. Furthermore, the length h1 of the first semiconductor layer 31 in the direction X can be greater than the sum of the length h2 of the second semiconductor layer 32 in the direction X and the length h3 of the element electrode layer 37 in the direction X. Furthermore, the length h1 of the first semiconductor layer 31 in the direction X can be greater than half of the length h4 of the light-emitting element ED in the direction X. Therefore, the active layer 36 disposed between the first semiconductor layer 31 and the second semiconductor layer 32 can be offset from the center (or central region) of the light-emitting element ED in the X direction, such that the active layer 36 is positioned closer to one side in the X direction (e.g., the side on which the second semiconductor layer 32 is disposed). Because the active layer 36 is positioned closer to this side in the longitudinal direction of the light-emitting element ED, the intensity of light emitted from the active layer 36 through its two ends can be greater at the end closer to the active layer 36 than at the opposite ends. In other words, because the light-emitting active layer 36 is positioned closer to one side (e.g., the side adjacent to the second semiconductor layer 32 in the X direction), the intensity of light emitted from the light-emitting element ED can be asymmetrical when viewed from the top.

[0238] Figure 10 It is shown Figure 8 An enlarged cross-sectional view of an example of region B.

[0239] refer to Figure 10The light-emitting element ED can be disposed between the first inner embankment portion IBK1 and the second inner embankment portion IBK2, such that the first end of the light-emitting element ED is disposed on the first electrode 310 and the second end of the light-emitting element ED is disposed on the second electrode 320. The first end of the light-emitting element ED can refer to the end where the element electrode layer 37 and / or the second semiconductor layer 32 are located, and the second end of the light-emitting element ED can refer to the end where the first semiconductor layer 31 is located. The direction X in which the light-emitting element ED extends and the direction in which the semiconductor layers included in the light-emitting element ED are stacked can be parallel to the surface of the first base substrate 110.

[0240] The first contact electrode 410 can contact the element electrode layer 37 located at the first end of the light-emitting element ED to electrically connect to the second semiconductor layer 32. The second contact electrode 420 can contact the first semiconductor layer 31 located at the second end of the light-emitting element ED to electrically connect to the first semiconductor layer 31. That is, the first contact electrode 410 can electrically connect the first electrode 310 to the second semiconductor layer 32 of the light-emitting element ED, and the second contact electrode 420 can electrically connect the second electrode 320 to the first semiconductor layer 31 of the light-emitting element ED to apply an electrical signal to the light-emitting element ED.

[0241] Figure 11 It is an enlarged cross-sectional view showing the path of light generated from the light-emitting element.

[0242] refer to Figure 11 The light L emitted from the active layer 36 of the light-emitting element ED is not limited to one direction. It can be emitted not only through the two end surfaces of the light-emitting element ED, but also through the side surface.

[0243] For example, light L emitted from the active layer 36 of the light-emitting element ED can exit the light-emitting element ED through the end surface where the element electrode layer 37 of the light-emitting element ED is located. Light L emitted through one end surface of the light-emitting element ED and traveling towards the first inner dam IBK1, the first electrode 310, or the first contact electrode 410 can be reflected by multiple elements, allowing light L to travel towards the display side. Furthermore, light L emitted through the opposite end surface of the light-emitting element ED and traveling towards the second inner dam IBK2, the second electrode 320, or the second contact electrode 420 can be reflected by multiple elements, allowing light L to travel towards the display side. Additionally, light emitted through the side surface of the light-emitting element ED can pass through multiple elements disposed above the light-emitting element ED to travel towards the display side.

[0244] As described above, the active layer 36 of the light-generating element ED can be offset from the central region of the light-emitting element ED in the direction X in which the light-emitting element ED extends, such that the active layer 36 is positioned closer to the side where the second semiconductor layer 32 is disposed. Since the active layer 36 is positioned closer to one of the two ends of the light-emitting element ED, when viewed from the top of the light-emitting element ED, the intensity of the light L emitted from the light-emitting element ED and traveling towards the display side for each azimuth angle can be greater at one end where the second semiconductor layer 32 is disposed than at the opposite end where the first semiconductor layer 31 is disposed. Therefore, by adjusting the arrangement of the light-emitting element ED in the emission region EMA, the amount of light emitted from the active layer 36 and incident on the color control layers WCL and TPL disposed above the light-emitting element ED can be effectively increased, thereby improving the light output coupling efficiency.

[0245] Figure 12 It is shown Figure 8 An enlarged cross-sectional view of another example of region B.

[0246] Figure 12 The implementation methods shown are the same as Figure 10 The difference in the embodiment shown is that the third insulating layer 530 is eliminated.

[0247] For example, the first contact electrode 410 and the second contact electrode 420 can be directly disposed on the second insulating layer 520. The first contact electrode 410 and the second contact electrode 420 can be spaced apart from each other on the second insulating layer 520 to expose a portion of the second insulating layer 520. The exposed portion of the second insulating layer 520 between the first contact electrode 410 and the second contact electrode 420 can contact the fourth insulating layer 540.

[0248] According to this embodiment, although the third insulating layer 530 is removed from the first display substrate 10, the second insulating layer 520 may include an insulating material to fix the light-emitting element ED. The first contact electrode 410 and the second contact electrode 420 can be patterned and formed together via a single mask process. Therefore, no additional mask process is required to form the first contact electrode 410 and the second contact electrode 420, and thus the efficiency of the manufacturing process of the display device 1 can be improved. Apart from the removal of the third insulating layer 530, this embodiment is similar to... Figure 10 and Figure 11 The implementation method is the same; therefore, redundant descriptions will be omitted.

[0249] Figure 13 This is a conceptual schematic diagram illustrating the relative cross-sectional arrangement between the color control layer and the active layer of the light-emitting element according to an embodiment.

[0250] refer to Figure 6 , Figure 11 and Figure 13 Light emitted from the active layer 36 of the light-emitting element ED can travel to the color control layer WCL or TPL disposed above it. As described above, the color control layers WCL and TPL can be formed via inkjet printing in openings separated by anti-mixing members MBM disposed along the boundaries of each sub-pixel SPX. That is, the openings separated by the anti-mixing members MBM can be filled with the color control layers WCL and / or TPL. The openings separated by the anti-mixing members MBM can define the transmissive region TA of each sub-pixel SPX.

[0251] As described above, light emitted from the active layer 36 of the light-emitting element ED may not travel in a single specific direction. Light LT emitted from the active layer 36 of the light-emitting element ED and incident on the color control layer WCL or TPL is reflected and / or refracted by the elements of the light-emitting element layer of the first display substrate 10 to travel toward the color control layer WCL or TPL above it. For example, light emitted from the active layer 36 of the light-emitting element ED may be reflected and / or refracted by the first electrode 310 and the second electrode 320, the first contact electrode 410 and the second contact electrode 420, the inner embankment IBK, and the plurality of insulating layers 520, 530 and 540 disposed above the light-emitting element ED to travel toward the color control layers WCL and TPL above them. As described above, since the active layer 36 of the light-emitting element ED is positioned closer to one side in the direction in which the light-emitting element ED extends, when viewed from above, the intensity of light LT emitted from the active layer 36 and reflected and / or refracted by multiple elements and incident on the color control layer WCL or TPL for each azimuth angle can be asymmetrically formed relative to the center of the light-emitting element ED. For the light-emitting element ED, when viewed from above, the intensity of light for each azimuth angle can be shifted towards the side on which the active layer 36 is disposed. Therefore, by adjusting the relative arrangement of the elements in each of the first display substrate 10 and the second display substrate 20 so that the light LT emitted from the active layer 36 of the light-emitting element ED and incident on the color control layer WCL or TPL above it is incident at the central region of the color control layer WCL or TPL, the light emission efficiency of the display device 1 can be improved.

[0252] For ease of explanation, Figure 13A first reference line RLa and a second reference line RLb are defined. The first reference line RLa can be defined as an imaginary line extending in a direction perpendicular to the first direction DR1 extending from the light-emitting element ED and passing through the center of the active layer 36 of the light-emitting element ED. The second reference line RLb can be defined as an imaginary line extending in a direction perpendicular to the first direction DR1 extending from the light-emitting element ED and passing through the center of the transmission region TA corresponding to the light-emitting element ED, wherein the transmission region TA can be defined by an opening included in the anti-color mixing member MBM. Because the color control layer WCL or TPL is disposed in each opening defining the transmission region TA of the anti-color mixing member MBM, the second reference line RLb can also be defined as a reference line that equally divides the color control layer WCL or TPL in a direction parallel to the light-emitting element ED (i.e., the first direction DR1).

[0253] Figure 13 Figure (a) and Figure 13 Each of the examples in Figure (b) shows an example of the light-emitting elements (EDs) arranged in a single row in the emission region (EMA). Figure 13 Figure (a) shows an example where the first reference line RLa of the light-emitting element ED overlaps or coincides with the second reference line RLb of the transmission region TA on the third direction DR3. Figure 13 Figure (b) shows an example where the first reference line RLa of the light-emitting element ED does not overlap or coincide with the second reference line RLb of the transmission region TA on the third direction DR3.

[0254] refer to Figure 13 As shown in Figure (a), when the light-emitting element ED and the color control layer WCL or TPL are aligned such that the first reference line RLa and the second reference line RLb overlap or coincide, the light LT emitted from the light-emitting element ED and incident on the color control layer WCL or TPL above it can be incident substantially on the central region of the color control layer WCL or TPL. Therefore, by adjusting the alignment of the light-emitting element ED and the color control layer WCL or TPL so that the first reference line RLa coincides with the second reference line RLb, the amount of light LT emitted from the emitting region EMA and incident on the central region of the transmission region TA can be increased. As a result, the emission efficiency of the light LO emitted through the second display substrate 20 to the outside of the display device 1 can be improved. The alignment of the light-emitting element ED and the transmission region TA can be adjusted by the anti-color mixing member MBM that defines the transmission region TA.

[0255] In this case, the edge of the transmission region TA on one side (left side in the attached figure) in the first direction DR1 ( Figure 14 The first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa can be equal to the edge of the transmission region TA on the opposite side (right side in the figure) in the first direction DR1. Figure 14 The second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa. That is, by adjusting the alignment of the light-emitting element ED with the color control layer WCL or TPL so that the distances d1 and d2 from the two edges of the transmission region TA in a direction parallel to the direction in which the light-emitting element ED extends to the first reference line RLa are equal to each other, the leakage of light LT emitted from the light-emitting element ED and traveling upward can be reduced.

[0256] On the other hand, reference Figure 13 As shown in Figure (b), when the light-emitting element ED is aligned with the color control layer WCL or TPL such that the first reference line RLa does not overlap with the second reference line RLb, the light LT emitted from the light-emitting element ED and incident on the color control layer WCL or TPL above it can be shifted to one side of the color control layer WCL or TPL in the first direction DR1. For example, if the light-emitting element ED is aligned such that an imaginary line extending through the center of the light-emitting element ED and in a direction perpendicular to the first direction DR1 extending from the light-emitting element ED coincides with the second reference line RLb (i.e., the two edges of the transmission region TA are symmetrical with respect to the center of the light-emitting element ED), then the first reference line RLa can be shifted to the left from the second reference line RLb. Therefore, the light LT emitted from the light-emitting element ED and incident on the color control layer WCL or TPL above it can be shifted to the side where the active layer 36 is located, and can even be incident on the blocking region BA. Therefore, if as Figure 13 If the first reference line RLa does not overlap with the second reference line RLb as shown in Figure (b), some of the light emitted from the light-emitting element ED and incident on the color control layer WCL or TPL may be incident on the peripheral area of ​​the color control layer WCL or TPL. As a result, the emission efficiency of the display device 1 may be reduced.

[0257] Therefore, when multiple light-emitting elements (EDs) are arranged in a single row within the emission region (EMA) defined by the opening separated by the outer embankment (OBK), such as Figure 13 As shown in Figure (a), by aligning the first display substrate 10 and the second display substrate 20 such that the first reference line RLa of the light-emitting element ED coincides with the second reference line RLb (or the second reference line of the color control layer WCL or TPL) of the transmission region TA, light emitted from the first display substrate 10 can be substantially or essentially incident on the central region of the color control layer WCL or TPL of the second display substrate 20. Furthermore, in this case, the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa can be equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa. Therefore, the light emission efficiency of the display device 1 can be improved by adjusting the positional relationship between the transmission region TA and the light-emitting element ED.

[0258] Figure 14 This is a plan view showing the relative arrangement of the transmission region, the emission region, and the plurality of light-emitting elements according to an embodiment of the present disclosure. Figure 15 This is a plan view showing the layout of the light-emitting element layer according to an embodiment of the present disclosure. Figure 16 It is based on Figure 14 and Figure 15 A cross-sectional view of the first sub-pixel of the display device according to the embodiment.

[0259] As referenced above Figure 13 As described, when multiple light-emitting elements ED are arranged in a single row in the emission area EMA, the elements of the display device 1 can be aligned such that the first reference line RLa and the second reference line RLb overlap each other, in order to increase the amount of light emitted from the light-emitting elements ED and incident on the central area of ​​the color control layers WCL and TPL disposed above them.

[0260] According to embodiments of this disclosure, in order to align the first display substrate 10 and the second display substrate 20 such that the first reference line RLa and the second reference line RLb overlap each other, the first display substrate 10 and the second display substrate 20 can be aligned such that the arrangement of the transmissive region TA and the emissive region EMA of each of the sub-pixels SPX is as follows: Figure 14 As shown, it is symmetrical, and when viewed from above, the light-emitting element ED is offset to one side of the emission region EMA in the first direction DR1.

[0261] According to some other embodiments, in order to align the first display substrate 10 and the second display substrate 20 such that the first reference line RLa and the second reference line RLb overlap each other, the first display substrate 10 and the second display substrate 20 can be aligned such that the arrangement of the light-emitting elements ED is symmetrical in the emission region EMA, while when viewed from above, the transmission region TA and the emission region EMA of each of the sub-pixels SPX are offset to one side in the first direction DR1. (The reference...) Figures 25 to 28 To describe it in more detail.

[0262] refer to Figures 14 to 16 The emitting region EMA of the first display substrate 10 can be located at the center (or central region) of the transmissive region TA of the second display substrate 20. Therefore, the width W1 between the left side of the transmissive region TA and the left side of the emitting region EMA can be equal to the width W2 between the right side of the transmissive region TA and the right side of the emitting region EMA.

[0263] When the light-emitting elements (EDs) are arranged in a single row in the emitting region EMA, as described above, a first reference line RLa passing through the center of the active layer 36 of each of the EDs can overlap with a second reference line RLb that equally divides the transmission region TA in a first direction DR1 parallel to the direction in which the EDs extend. When the first reference line RLa overlaps with the second reference line RLb, a first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa can be equal to a second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa.

[0264] Since the color control layer WCL or TPL is located in the transmissive area TA defined by the opening separated by the anti-mixing component MBM, when viewed from the top, the first horizontal distance d1 between the left side of the color control layer WCL or TPL located in each of the sub-pixels SPX and the first reference line RLa can be equal to the second horizontal distance d2 between the right side of the color control layer WCL or TPL and the first reference line RLa.

[0265] Incidentally, in this embodiment where the emitting region EMA is located at the center of the transmissive region TA, the first reference line RLa is configured to overlap with the second reference line RLb, and therefore the light-emitting element ED in the emitting region EMA can be configured such that the first reference line RLa overlaps with the third reference line RLe, which equally divides the emitting region EMA in a first direction DR1 parallel to the direction in which the light-emitting element ED extends. Since the active layer 36 of each of the light-emitting elements ED is positioned closer to one side in the direction in which the light-emitting element ED extends, the light-emitting element ED can be aligned such that the light-emitting element ED is offset to one side in the first direction DR1 within the emitting region EMA. For example, the distance dE1 between the left side of the emitting region EMA and the first end of the light-emitting element ED can be different from the distance dE2 between the right side of the emitting region EMA and the second end of the light-emitting element ED.

[0266] Because the light-emitting element ED is disposed within the emission region EMA defined by the opening separated by the outer diaphragm portion OBK, the outer diaphragm portion OBK disposed around each sub-pixel SPX and forming the left side of the emission region EMA can face the first end of the light-emitting element ED. The distance dE1 between the outer diaphragm portion OBK forming the left side of the emission region EMA and the first end of the light-emitting element ED can refer to the same distance. Similarly, the distance dE2 between the outer diaphragm portion OBK forming the right side of the emission region EMA and the second end of the light-emitting element ED can refer to the same distance. Therefore, the distance dE1 between the outer diaphragm portion OBK forming the left side of the emission region EMA and the first end of the light-emitting element ED can be different from the distance dE2 between the outer diaphragm portion OBK forming the right side of the emission region EMA and the second end of the light-emitting element ED.

[0267] In an embodiment where the emitting region EMA is respectively located at the center (or central region) of the transmission region TA, the light-emitting element ED is aligned in the emitting region EMA such that a first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa is equal to a second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa, and therefore the light-emitting element ED can be offset such that the light-emitting element ED is closer to the side in the first direction DR1 in the emitting region EMA. It should be noted that the first reference line RLa and the second reference line RLb overlap each other, and the light-emitting element ED is aligned with the color control layers WCL and TPL such that the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa, and therefore the light emitted from the light-emitting element ED can be symmetrically incident on the transmission region TA above it. Therefore, the light emitted from the emitting region EMA is substantially incident on the center (or central region) of the transmission region TA, and thus, when viewed from above, the area with the maximum light intensity can be aligned with the center of the transmission region TA, thereby reducing light leakage. As a result, the emission efficiency of display device 1 can be improved.

[0268] refer to Figure 15 and Figure 16 By adjusting the arrangement of the inner embankment IBK set in the emission region EMA, the first reference line RLa of the light-emitting element ED overlaps with the third reference line RLe that equally divides the emission region EMA in the first direction DR1.

[0269] When viewed from the top, the shape of the first inner embankment IBK1 can be the same as the shape of the second inner embankment IBK2. For example, the width W3 of the first inner embankment IBK1 in the first direction DR1 can be equal to the width W4 of the second inner embankment IBK2 in the first direction DR1.

[0270] When the width W3 of the first inner embankment IBK1 in the first direction DR1 is equal to the width W4 of the second inner embankment IBK2 in the first direction DR1, in order to configure the light-emitting element ED such that the first reference line RLa overlaps with the third reference line RLe, the distance dI1 between the left side of the emitting region EMA and the side of the first inner embankment IBK1 facing the left side of the emitting region EMA can be different from the distance dI2 between the right side of the emitting region EMA and the side of the second inner embankment IBK2 facing the right side of the emitting region EMA. Alternatively, the distance dI1 between the outer embankment OBK and the first inner embankment IBK1 extending in the second direction DR2 on the left side of the emitting region EMA can be different from the distance dI2 between the outer embankment OBK and the second inner embankment IBK2 extending in the second direction DR2 on the right side of the emitting region EMA. In an embodiment, the distance dI1 between the left side of the emitting region EMA and the first inner embankment IBK1 can be greater than the distance dI2 between the right side of the emitting region EMA and the second inner embankment IBK2.

[0271] Figure 17 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure.

[0272] refer to Figure 17 By adjusting the shape of the inner embankment IBK_1 set in the emission region EMA, the first reference line RLa of the light-emitting element ED overlaps with the third reference line RLe that equally divides the emission region EMA in the first direction DR1.

[0273] For example, when viewed from the top, the shape of the first inner embankment IBK1_1 may differ from the shape of the second inner embankment IBK2. In other words, the width W3 of the first inner embankment IBK1_1 in the first direction DR1 may differ from the width W4 of the second inner embankment IBK2 in the first direction DR1. For example, the width W3 of the first inner embankment IBK1_1 in the first direction DR1 may be greater than the width W4 of the second inner embankment IBK2 in the first direction DR1.

[0274] To configure the light-emitting element ED such that the first reference line RLa overlaps with the third reference line RLe, the distance dI1 between the left side of the emitting region EMA and the side of the first inner embankment IBK1_1 facing the left side of the emitting region EMA can be equal to the distance dI2 between the right side of the emitting region EMA and the side of the second inner embankment IBK2 facing the right side of the emitting region EMA. The width W3 of the first inner embankment IBK1_1 in the first direction DR1 can be greater than the width W4 of the second inner embankment IBK2 in the first direction DR1. The distance dI1 between the outer embankment OBK extending in the second direction DR2 on the left side of the emitting region EMA to separate the emitting region EMA and the first inner embankment IBK1_1 can be equal to the distance dI2 between the outer embankment OBK extending in the second direction DR2 on the right side of the emitting region EMA to separate the emitting region EMA and the second inner embankment IBK2. In the implementation, the width W3 of the first inner embankment IBK1_1 can be greater than the width W4 of the second inner embankment IBK2, and the inner embankment IBK_1 can be arranged such that the distance dI1 between the left side of the transmission region EMA and the first inner embankment IBK1_1 is equal to the distance dI2 between the right side of the transmission region EMA and the second inner embankment IBK2 located on the right side of the transmission region EMA, such that the first reference line RLa and the third reference line RLe overlap each other.

[0275] Other embodiments of this disclosure will be described below. In the following description, the same or similar elements will be denoted by the same or similar reference numerals, and redundant descriptions will be omitted or briefly described. The focus will be on the differences from the embodiments described above.

[0276] Figure 18 This is a conceptual schematic diagram showing the relative cross-sectional arrangement between the color control layer and the active layer of multiple light-emitting elements according to an embodiment.

[0277] Figure 18 The schematic diagram shown is consistent with Figure 13 The difference in the schematic diagram is that the light-emitting elements ED are arranged in multiple columns in each of the sub-pixels SPX.

[0278] According to this embodiment, the light-emitting element ED disposed in each of the sub-pixels SPX may include a first light-emitting element ED1 and a second light-emitting element ED2. The first light-emitting element ED1 and the second light-emitting element ED2 may be spaced apart from each other in a first direction DR1. As shown in the figures, the active layer 36 of the first light-emitting element ED1 and the active layer 36 of the second light-emitting element ED2 may be offset to the same side in the direction in which the first light-emitting element ED1 and the second light-emitting element ED2 extend.

[0279] According to this embodiment, the center line between the first reference line RLa1 of the first light-emitting element ED1 and the first reference line RLa2 of the second light-emitting element ED2 is defined as the fourth reference line RLc. When the first light-emitting element ED1 and the second light-emitting element ED2 are aligned with the color control layer WCL or TPL such that the fourth reference line RLc overlaps or coincides with the second reference line RLb, the light LT emitted from the first light-emitting element ED1 and the second light-emitting element ED2 and incident on the color control layer WCL or TPL can be substantially incident on the central region of the color control layer WCL or TPL.

[0280] When the first light-emitting element ED1 and the second light-emitting element ED2 are aligned with the color control layer WCL or TPL such that the fourth reference line RLc overlaps or coincides with the second reference line RLb, the edge of the transmission region TA on one side of the first direction DR1 (left side in the attached figure) ( Figure 18 The first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 can be equal to the edge of the opposite side (right side in the figure) of the transmission region TA in the first direction DR1. Figure 18 The second horizontal distance d2 is the distance between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2. That is, by adjusting the alignment of the first light-emitting element ED1 and the second light-emitting element ED2 with the color control layer WCL or TPL so that the distances d1 and d2 from the two edges of the transmission region TA to the first reference lines RLa and RLa2 in a direction parallel to the direction in which the first light-emitting element ED1 and the second light-emitting element ED2 extend can be equal to each other, thereby reducing the leakage of light LT emitted from the first light-emitting element ED1 and the second light-emitting element ED2 and traveling upward.

[0281] Figure 19 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure. Figure 20 It is based on Figure 19 A cross-sectional view of the display device according to an embodiment.

[0282] As referenced above Figure 18 As described, when multiple light-emitting elements ED are arranged in multiple columns in the emission area EMA, the elements of the display device 1 can be aligned such that the fourth reference line RLc (which is the center line between the first reference lines RLa1 and RLa2 of the first light-emitting element ED1 and the second light-emitting element ED2) overlaps with the second reference line RLb, so as to increase the amount of light emitted from the light-emitting elements ED and incident on the central area of ​​the color control layers WCL and TPL disposed above them.

[0283] refer to Figures 19 to 20According to this embodiment, the emitting region EMA of the first display substrate 10 can be respectively disposed at the center of the transmissive region TA of the second display substrate 20. Therefore, the width W1 between the left side of the transmissive region TA and the left side of the emitting region EMA can be equal to the width W2 between the right side of the transmissive region TA and the right side of the emitting region EMA.

[0284] The light-emitting element ED may include a first light-emitting element ED1 and a second light-emitting element ED2. When viewed from above, the first light-emitting element ED1 may be disposed on the upper left side of the emission region EMA, and when viewed from above, the second light-emitting element ED2 may be spaced apart from the first light-emitting element ED1 in the first direction DR1 and disposed on the upper right side of the emission region EMA. The first light-emitting element ED1 and the second light-emitting element ED2 may be spaced apart from the outer embankment portion OBK in the first direction DR1.

[0285] When the first light-emitting element ED1 and the second light-emitting element ED2 are arranged in two columns in the emission region EMA, as described above, the fourth reference line RLc (which is the center line between the first reference line RLa1 passing through the center of the active layer 36 of the first light-emitting element ED1 and the first reference line RLa2 passing through the center of the active layer 36 of the second light-emitting element ED2) can overlap with the second reference line RLb (which equally divides the transmission region TA in the first direction DR1 parallel to the direction in which the light-emitting element ED extends). Since the fourth reference line RLc overlaps with the second reference line RLb, the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 (which is arranged adjacent to the left side of the transmission region TA) can be equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2 (which is arranged adjacent to the right side of the transmission region TA).

[0286] Since the color control layer WCL or TPL is disposed in the transmissive area TA defined by the opening separated by the anti-mixing component MBM, when viewed from the top, the first horizontal distance d1 between the left side of the color control layer WCL or TPL disposed in each of the sub-pixels SPX and the first reference line RLa1 of the first light-emitting element ED1 can be equal to the second horizontal distance d2 between the right side of the color control layer WCL or TPL and the first reference line RLa2 of the second light-emitting element ED2.

[0287] In this embodiment, where the emitting region EMA is located at the center of the transmitting region TA, the first light-emitting element ED1 and the second light-emitting element ED2 are aligned with the transmitting region TA such that a first horizontal distance d1 between the first reference line RLa1 of the first light-emitting element ED1 and the left side of the transmitting region TA is equal to a second horizontal distance d2 between the first reference line RLa2 of the second light-emitting element ED2 and the right side of the transmitting region TA. Therefore, the active layer 36 of the first light-emitting element ED1 and the second light-emitting element ED2 is positioned closer to one side in the direction in which the first light-emitting element ED1 and the second light-emitting element ED2 extend, such that the first light-emitting element ED1 and the second light-emitting element ED2 can be asymmetrically aligned in the emitting region EMA in the first direction DR1. For example, the distance dE1 between the first end of the first light-emitting element ED1 facing the left side of the emitting region EMA and the left side of the emitting region EMA can be different from the distance dE2 between the second end of the second light-emitting element ED2 facing the right side of the emitting region EMA and the right side of the emitting region EMA.

[0288] Because light-emitting elements ED1 and ED2 are disposed within the emission region EMA defined by the opening separated by the outer diaphragm portion OBK, the outer diaphragm portion OBK, which is disposed at the boundary of each sub-pixel SPX and forms the left side of the emission region EMA, can be spaced apart from and face the first end of the first light-emitting element ED1 (which is disposed adjacent to the outer diaphragm portion OBK forming the left side of the emission region EMA). The distance dE1 between the outer diaphragm portion OBK forming the left side of the emission region EMA and the first end of the first light-emitting element ED1, and the distance dE1 between the left side of the emission region EMA and the first end of the first light-emitting element ED1 facing the left side of the emission region EMA, can refer to the same distance. Similarly, the outer diaphragm portion OBK forming the right side of the emission region EMA can be spaced apart from and face the second end of the second light-emitting element ED2 (which is disposed adjacent to the outer diaphragm portion OBK forming the right side of the emission region EMA). The distance dE2 between the outer embankment OBK forming the right side of the emission region EMA and the second end of the second light-emitting element ED2, and the distance dE2 between the right side of the emission region EMA and the second end of the second light-emitting element ED2 facing the right side of the emission region EMA, can refer to the same distance. Therefore, the distance dE1 between the outer embankment OBK forming the left side of the emission region EMA and the first end of the first light-emitting element ED1 can be different from the distance dE2 between the outer embankment OBK forming the right side of the emission region EMA and the second end of the second light-emitting element ED2.

[0289] In an embodiment where the emission region EMA is located at the center (or central region) of the transmission region TA, the first light-emitting element ED1 and the second light-emitting element ED2 are aligned in the emission region EMA such that a first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 is equal to a second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2. Therefore, the first light-emitting elements ED1 and ED2 can be offset such that they are closer to one side of the first direction DR1 in the emission region EMA. It should be noted that the fourth reference line RLc overlaps with the second reference line RLb, and the first light-emitting elements ED1 and ED2, along with the color control layers WCL and TPL, are aligned such that the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2. Therefore, light emitted from the light-emitting elements ED1 and ED2 can be symmetrically incident on the transmission region TA above them. Therefore, the light emitted from the emitting region EMA is generally incident on the center (or central region) of the transmissive region TA, and thus, when viewed from above, the area with the maximum light intensity can be aligned with the center of the transmissive region TA, thereby reducing light leakage. As a result, the emission efficiency of the display device 1 can be improved.

[0290] The alignment of the first light-emitting element ED1 and the second light-emitting element ED2 in the emission area EMA can be achieved by, for example... Figure 20 The arrangement of the inner embankment IBK shown is adjusted accordingly.

[0291] For example, the inner embankment portion IBK may include a first inner embankment portion IBK1, a second inner embankment portion IBK2, and a third inner embankment portion IBK3. The first inner embankment portion IBK1, the second inner embankment portion IBK2, and the third inner embankment portion IBK3 may have the same width in the first direction DR1. The first inner embankment portion IBK1 may be positioned adjacent to the outer embankment portion OBK on the left side of the emitting region EMA, and the second inner embankment portion IBK2 may be positioned adjacent to the outer embankment portion OBK on the right side of the emitting region EMA. The third inner embankment portion IBK3 may be positioned between the first inner embankment portion IBK1 and the second inner embankment portion IBK2, and may be spaced apart from each of the first inner embankment portion IBK1 and the second inner embankment portion IBK2. A first light-emitting element ED1 may be positioned in the space between the first inner embankment portion IBK1 and the third inner embankment portion IBK3, and a second light-emitting element ED2 may be positioned in the space between the second inner embankment portion IBK2 and the third inner embankment portion IBK3.

[0292] In order to align the first light-emitting element ED1 and the second light-emitting element ED2 in the emission region EMA such that the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2, the distance between the first inner embankment IBK1 and the outer embankment OBK adjacent to the first inner embankment IBK1 may be different from the distance between the second inner embankment IBK2 and the outer embankment OBK adjacent to the second inner embankment IBK2.

[0293] Figure 21 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure. Figure 22 It is based on Figure 21 A cross-sectional view of the display device according to an embodiment.

[0294] according to Figure 21 and Figure 22 The display device 1 of the embodiment and Figure 19 and Figure 20 The difference in the implementation method is that the multiple light-emitting elements ED disposed in the emission region EMA of each sub-pixel SPX include a first light-emitting element ED1, a second light-emitting element ED2 and a third light-emitting element ED3 disposed in the first to third columns respectively.

[0295] Even when the first light-emitting element ED1, the second light-emitting element ED2, and the third light-emitting element ED3 are respectively arranged in the first to third columns of the emission area EMA, in order to increase the amount of light emitted from the light-emitting element ED and incident on the central area of ​​the color control layer WCL or TPL, the elements of the display device 1 can be aligned such that the fourth reference line RLc (which is the center line between the first reference lines RLa1 and RLa2 of the first light-emitting element ED1 and the second light-emitting element ED2 located at the outermost position) overlaps with the second reference line RLb.

[0296] For example, according to this embodiment, the light-emitting element ED may include a first light-emitting element ED1 to a third light-emitting element ED3. When viewed from above, the first light-emitting element ED1 may be disposed on the upper left side of the emission region EMA. When viewed from above, the second light-emitting element ED2 may be spaced apart from the first light-emitting element ED1 in the first direction DR1 and disposed on the upper right side of the emission region EMA. When viewed from above, the third light-emitting element ED3 may be disposed between the first light-emitting element ED1 and the second light-emitting element ED2 in the emission region EMA and spaced apart from each of the first light-emitting element ED1 and the second light-emitting element ED2 in the first direction DR1. The first light-emitting element ED1 and the second light-emitting element ED2 may be spaced apart from the outer embankment OBK in the first direction DR1 and may be located at the outermost position in the emission region EMA.

[0297] According to this embodiment, the first light-emitting element ED1, the second light-emitting element ED2, and the third light-emitting element ED3 can be disposed between multiple inner embankment portions IBK. For example, with Figure 20 Compared to the previous implementation, the inner embankment IBK may further include a fourth inner embankment IBK4. The fourth inner embankment IBK4 may be disposed between the second inner embankment IBK2 and the third inner embankment IBK3. The third light-emitting element ED3 may be disposed between the third inner embankment IBK3 and the fourth inner embankment IBK4.

[0298] Regardless of which side the active layer 36 of each of the third light-emitting elements ED3 is offset in the first direction DR1, when the first light-emitting element ED1, the second light-emitting element ED2, and the color control layer WCL or TPL are aligned such that the fourth reference line RLc (which is the center line between the first reference lines RLa1 and RLa2 of the first light-emitting element ED1 and the second light-emitting element ED2 located at the outermost position in the emission region EMA) overlaps with the second reference line RLb, light emitted from the first light-emitting element ED1, the second light-emitting element ED2, and the third light-emitting element ED3 and incident on the color control layer WCL or TPL above them can be substantially incident on the central region of the color control layer WCL or TPL.

[0299] Figure 23 This is a conceptual schematic diagram illustrating the relative cross-sectional arrangement between a color control layer and an active layer of multiple light-emitting elements according to another embodiment. Figure 24 It is based on Figure 23 A cross-sectional view of the display device according to an embodiment.

[0300] according to Figure 23 and Figure 24 The display device 1 according to the embodiment and the method of implementation Figure 18 and Figure 20The difference in the implementation of the display device 1 is that the active layer 36 of the first light-emitting element ED1 and the second light-emitting element ED2 disposed in the emission region EMA faces opposite directions.

[0301] For example, as shown in the attached figures, the active layer 36 of the first light-emitting element ED1 and the active layer 36 of the second light-emitting element ED2 may be offset to opposite sides in the direction in which the first light-emitting element ED1 and the second light-emitting element ED2 extend.

[0302] According to this embodiment, the center line between the first reference line RLa1 of the first light-emitting element ED1 and the first reference line RLa2 of the second light-emitting element ED2 is defined as the fourth reference line RLc. When the first light-emitting element ED1 and the second light-emitting element ED2 are aligned with the color control layer WCL or TPL such that the fourth reference line RLc overlaps or coincides with the second reference line RLb, the light LT emitted from the first light-emitting element ED1 and the second light-emitting element ED2 and incident on the color control layer WCL or TPL can be substantially incident on the central region of the color control layer WCL or TPL.

[0303] When the first light-emitting element ED1 and the second light-emitting element ED2 are aligned with the color control layer WCL or TPL such that the fourth reference line RLc overlaps or coincides with the second reference line RLb, the edge of the transmission region TA on one side of the first direction DR1 (left side in the attached figure) ( Figure 24 The first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 can be equal to the edge of the transmission region TA on the opposite side (right side in the figure) in the first direction DR1. Figure 24 The second horizontal distance d2 between the right side of the transmission region TA in the middle and the first reference line RLa2 of the second light-emitting element ED2.

[0304] According to this embodiment, although the active layers 36 of the first light-emitting element ED1 and the second light-emitting element ED2 face opposite directions, the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2. Therefore, the light LT emitted from the first light-emitting element ED1 and the second light-emitting element ED2 and traveling in parallel to the upper side can be incident symmetrically with respect to the transmission region TA.

[0305] Figure 25 This is a plan view showing the relative arrangement of an emission region and a transmission region included in a pixel of a display device according to another embodiment. Figure 26 It is along Figure 25A cross-sectional view of the display device taken by line IV-IV'. Figure 27 It shows the basis Figure 25 A plan view of the relative arrangement of the transmission region, the emission region, and the multiple light-emitting elements in the embodiment. Figure 28 It is based on Figure 25 A cross-sectional view of the first sub-pixel of the display device according to the embodiment.

[0306] As referenced above Figure 13 As depicted in Figure (a), when multiple light-emitting elements ED are arranged in a single row in the emission region EMA, the elements of the display device 1 can be aligned such that the first reference line RLa and the second reference line RLb overlap each other, in order to increase the amount of light emitted from the light-emitting elements ED and incident on the central region of the color control layers WCL and TPL disposed above them.

[0307] As described above, in order to align the first display substrate 10_1 and the second display substrate 20 such that the first reference line RLa and the second reference line RLb overlap each other, when viewed from the top, the first display substrate 10_1 and the second display substrate 20 can be aligned such that the arrangement of the light-emitting elements ED is symmetrical in the emission region EMA, while the transmission region TA and the emission region EMA of each of the sub-pixels SPX are offset to one side in the first direction DR1.

[0308] In the following text, reference will be made to Figures 25 to 28 The embodiment is described in which, when viewed from above, the light-emitting elements ED are symmetrically arranged in the emission regions EMA by aligning the transmission region TA with the emission region EMA of each of the sub-pixels SPX that is offset to one side in the first direction DR1, and the first reference line RLa and the second reference line RLb overlap each other.

[0309] according to Figure 25 and Figure 26 The display device 1_1 according to the embodiment and the method of implementation Figure 5 and Figure 6 The difference in the implementation of the display device 1 is that the emission region EMA of the first display substrate 10_1 in the pixel PX is offset from the center of the transmission region TA of the second display substrate 20 to one side in the first direction DR1.

[0310] For example, the emitting region EMA of the first display substrate 10_1 can overlap with the transmissive region TA of the second display substrate 20 on a third direction DR3, and can be offset such that the emitting region EMA of the first display substrate 10_1 is positioned closer to one side. The first direction DR1 in which the emitting region EMA is offset in the transmissive region TA can be parallel to the direction in which the light-emitting element ED disposed in the first display substrate 10 extends. When the emitting region EMA is smaller than the transmissive region TA, the distance between the side of the emitting region EMA and the corresponding side of the transmissive region TA can be non-uniform along the boundary when the emitting region EMA and the transmissive region TA overlap. The width W1 between the left side of the emitting region EMA and the left side of the transmissive region TA can be different from the width W2 between the right side of the emitting region EMA and the right side of the transmissive region TA. For example, the width W1 between the left side of the emitting region EMA and the left side of the transmissive region TA can be greater than the width W2 between the right side of the emitting region EMA and the right side of the transmissive region TA.

[0311] according to Figures 26 to 28 In this embodiment, the light-emitting elements ED are arranged in a single row in the emission region EMA so that they are symmetrical. The emission region EMA of each of the sub-pixels SPX can be aligned with the corresponding transmission region TA so that the emission region EMA is offset to one side in the first direction DR1, so that the first reference line RLa and the second reference line RLb overlap each other.

[0312] According to this embodiment, the light-emitting element ED can be arranged in the emitting region EMA such that the light-emitting element ED is symmetrical in the first direction DR1, such that the distance dE1 between the left side of the emitting region EMA and the first end of the light-emitting element ED facing the left side of the emitting region EMA can be equal to the distance dE2 between the right side of the emitting region EMA and the second end of the light-emitting element ED facing the right side of the emitting region EMA.

[0313] Because the light-emitting element ED is disposed within the emission region EMA defined by the opening separated by the outer dike portion OBK, the outer dike portion OBK disposed around each sub-pixel SPX and forming the left side of the emission region EMA can face the first end of the light-emitting element ED. The distance dE1 between the outer dike portion OBK forming the left side of the emission region EMA and the first end of the light-emitting element ED can refer to the same distance. Similarly, the distance dE2 between the outer dike portion OBK forming the right side of the emission region EMA and the second end of the light-emitting element ED can refer to the same distance. Therefore, the distance dE1 between the outer dike portion OBK forming the left side of the emission region EMA and the first end of the light-emitting element ED can be equal to the distance dE2 between the outer dike portion OBK forming the right side of the emission region EMA and the second end of the light-emitting element ED.

[0314] Since the light-emitting elements ED are symmetrically arranged in the emission region EMA along the first direction DR1, the first reference line RLa of the light-emitting elements ED can be offset to one side (e.g., the end where the active layer 36 of the light-emitting elements ED is located) from the center line that equally divides the emission region EMA along the first direction DR1. Therefore, in order to set the first display substrate 10_1 and the second display substrate 20 such that the first horizontal distance d1 between the first reference line RLa and the left side of the transmission region TA is equal to the second horizontal distance d2 between the first reference line RLa and the right side of the transmission region TA, and thus the first reference line RLa overlaps with the second reference line RLb, the emission region EMA can be aligned such that the emission region EMA is offset from the transmission region TA along the first direction DR1.

[0315] In the described embodiment where the light-emitting element ED is symmetrically arranged in the emission region EMA along the first direction DR1, by adjusting the alignment of the emission region EMA of the first display substrate 10_1 with the transmission region TA of the second display substrate 20 such that the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa, the emission region EMA can be shifted to one side in the transmission region TA. It should be noted that the first reference line RLa and the second reference line RLb overlap each other, and the light-emitting element ED is aligned with the color control layers WCL and TPL such that the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa. Therefore, light emitted from the light-emitting element ED can be symmetrically incident on the transmission region TA above it. Thus, light emitted from the emission region EMA is substantially incident on the center of the transmission region TA, and therefore, when viewed from above, the area with the maximum light intensity can be aligned with the center of the transmission region TA, thereby reducing light leakage. As a result, the emission efficiency of display device 1_1 can be improved.

[0316] Figure 29 This is a plan view showing the layout of the light-emitting element layer according to another embodiment of the present disclosure. Figure 30 It is based on Figure 29 A cross-sectional view of the display device according to an embodiment.

[0317] As referenced above Figure 18 As described, when multiple light-emitting elements ED are arranged in multiple columns in the emission area EMA, the elements of the display device 1 can be aligned such that the fourth reference line RLc (which is the center line between the first reference lines RLa1 and RLa2 of the first light-emitting element ED1 and the second light-emitting element ED2) overlaps with the second reference line RLb, so as to increase the amount of light emitted from the light-emitting elements ED and incident on the central area of ​​the color control layers WCL and TPL disposed above them.

[0318] refer to Figure 29 and Figure 30When viewed from above, the first light-emitting element ED1 can be disposed on the upper left side of the emission region EMA, and the second light-emitting element ED2 can be spaced apart from the first light-emitting element ED1 in the first direction DR1 and disposed on the upper right side of the emission region EMA. According to this embodiment, the first light-emitting element ED1 and the second light-emitting element ED2 can be arranged symmetrically in the emission region EMA in the first direction DR1. For example, the distance dE1 between the first end of the first light-emitting element ED1 facing the left side of the emission region EMA and the left side of the emission region EMA can be equal to the distance dE2 between the second end of the second light-emitting element ED2 facing the right side of the emission region EMA and the right side of the emission region EMA.

[0319] Because light-emitting elements ED1 and ED2 are disposed within the emission region EMA defined by the opening separated by the outer diaphragm OBK, the outer diaphragm OBK, which is disposed at the boundary of each of the sub-pixels SPX and forms the left side of the emission region EMA, can be spaced apart from and face the first end of the first light-emitting element ED1 (which is disposed adjacent to the outer diaphragm OBK forming the left side of the emission region EMA). As described above, the distance dE1 between the outer diaphragm OBK forming the left side of the emission region EMA and the first end of the first light-emitting element ED1, and the distance dE1 between the left side of the emission region EMA and the first end of the first light-emitting element ED1 facing the left side of the emission region EMA, can refer to the same distance. Similarly, the outer diaphragm OBK forming the right side of the emission region EMA can be spaced apart from and face the second end of the second light-emitting element ED2 (which is disposed adjacent to the outer diaphragm OBK forming the right side of the emission region EMA). As described above, the distance dE2 between the outer embankment OBK forming the right side of the emission region EMA and the second end of the second light-emitting element ED2, and the distance dE2 between the right side of the emission region EMA and the second end of the second light-emitting element ED2 facing the right side of the emission region EMA, can refer to the same distance. Therefore, the distance dE1 between the outer embankment OBK forming the left side of the emission region EMA and the first end of the first light-emitting element ED1 can be equal to the distance dE2 between the outer embankment OBK forming the right side of the emission region EMA and the second end of the second light-emitting element ED2.

[0320] In an embodiment where the first light-emitting element ED1 and the second light-emitting element ED2 are symmetrically arranged in the emission region EMA, by adjusting the alignment of the transmission region TA and the emission region EMA such that the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2, the emission region EMA can be shifted to one side in the transmission region TA. Therefore, the first display substrate 10_1 and the second display substrate 20 can be shifted and aligned such that the distance W1 between the left side of the emission region EMA and the left side of the transmission region TA is different from the distance W2 between the right side of the emission region EMA and the right side of the transmission region TA.

[0321] According to this embodiment, although the first light-emitting element ED1 and the second light-emitting element ED2 are symmetrically arranged in the emission region EMA along the first direction DR1, the emission region EMA is aligned with the transmission region TA such that the first light-emitting element ED1 and the second light-emitting element ED2 are offset relative to each other in the first direction DR1, and the fourth reference line RLc overlaps with the second reference line RLb, such that the first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 is equal to the second horizontal distance d2 between the right side of the transmission region TA and the first reference line RLa2 of the second light-emitting element ED2, and the first light-emitting element ED1 and the second light-emitting element ED2 are aligned with the color control layers WCL and TPL. Therefore, light emitted from the plurality of light-emitting elements ED1 and ED2 can be symmetrically incident on the transmission region TA above them. Therefore, light emitted from the emission region EMA is incident substantially on the center of the transmission region TA, and thus, when viewed from above, the area with the maximum light intensity can be aligned with the center of the transmission region TA, thereby reducing light leakage. As a result, the emission efficiency of the display device 1 can be improved.

[0322] Figure 31 It is along Figure 1 A cross-sectional view of another example of a display device, taken by line I-I'. Figure 32 It is based on Figure 31 A cross-sectional view of the display device according to an embodiment.

[0323] according to Figure 31 and Figure 32 The display device 1_2 of the embodiment and Figure 6 The difference in the implementation is that the second display substrate 20_1 is stacked (e.g., stacked sequentially) on top of the first display substrate 10, and as... Figure 2 and Figure 6The filler layer 50 and sealing member 70 shown between the first display substrate 10 and the second display substrate 20 are eliminated, and the display device 1_2 also includes an encapsulation layer EMC disposed on the second display substrate 20_1. Furthermore, according to this embodiment, the second base substrate 210 can be eliminated from the second display substrate 20_1.

[0324] For example, a first planarization layer OC1 may be disposed on the first display substrate 10. The first planarization layer OC1 may be disposed on the first display substrate 10 and may provide a flat surface above the surface height difference of the first display substrate 10 formed by the elements of the first display substrate 10. The upper surface of the first planarization layer OC1 may be flat. The first planarization layer OC1 may comprise an organic material. For example, the first planarization layer OC1 may be at least one selected from acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0325] The second capping layer CPL2 can be disposed on the first planarization layer OC1. The second capping layer CPL2 can seal the lower surface of the wavelength conversion layer WCL and the lower surface of the transparent pattern TPL.

[0326] The anti-color mixing component MBM can be disposed on the second capping layer CPL2. The color control layers WCL and TPL (i.e., the first wavelength conversion pattern WCL1, the second wavelength conversion pattern WCL2, and the transparent pattern TPL) can be disposed in the area separated by the anti-color mixing component MBM. The first capping layer CPL1 can be disposed on the color control layers WCL and TPL and the anti-color mixing component MBM. The first capping layer CPL1 can be disposed above the color control layers WCL and TPL and the anti-color mixing component MBM to cover them.

[0327] The second planarization layer OC2 may be disposed on the first capping layer CPL1. The second planarization layer OC2 may be disposed above the first capping layer CPL1 and may provide a flat surface over the surface height difference generated by the first wavelength conversion pattern WCL1 and the second wavelength conversion pattern WCL2, the transparent pattern TPL, and the anti-color mixing member MBM. The second planarization layer OC2 may include an organic material. For example, the second planarization layer OC2 may be at least one selected from acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0328] The light-absorbing component UAB can be disposed on the second planarization layer OC2. The light-absorbing component UAB can overlap with the anti-color mixing component MBM and the outer embankment OBK on the third direction DR3. The color filter layer CF can be disposed on the second planarization layer OC2. The color filter layer CF can be disposed on a surface of the second planarization layer OC2 on which the light-absorbing component UAB is disposed (e.g., the upper surface).

[0329] The third capping layer CPL3 can cover the color filter layer CF. The third capping layer CPL3 can be disposed on the color filter layer CF and the light-absorbing component UAB to protect the color filter layer CF and the light-absorbing component UAB.

[0330] An encapsulation layer EMC can be disposed on the second display substrate 20_1. The encapsulation layer EMC can be disposed in the display area DA and the non-display area NDA. For example, the encapsulation layer EMC can be disposed on the third capping layer CPL3 of the second display substrate 20_1. For example, the encapsulation layer EMC may include at least one inorganic film to prevent the penetration of oxygen or moisture. Furthermore, the encapsulation layer EMC may include at least one organic film to protect the display device 1_2 from particles such as dust.

[0331] Figure 33 This is a conceptual schematic diagram illustrating the relative cross-sectional arrangement between a color control layer and an active layer of multiple light-emitting elements according to another embodiment.

[0332] Figure 33 Implementation methods and Figure 18 The difference in the implementation is that the light-emitting element ED in each of the sub-pixels SPX may include a first light-emitting element ED1 and a second light-emitting element ED2, and the first reference line RLa1 of the first light-emitting element ED1, the first reference line RLa2 of the second light-emitting element ED2 and the second reference line RLb divide the color control layer WCL or TPL equally into four parts in a direction parallel to the light-emitting element ED (i.e., the first direction DR1).

[0333] For example, the edge of the transmission region TA on one side (left side in the attached figure) in the first direction DR1 ( Figure 33 The first horizontal distance d1 between the left side of the transmission region TA and the first reference line RLa1 of the first light-emitting element ED1 can be equal to the edge of the transmission region TA on the opposite side (right side in the figure) in the first direction DR1. Figure 33The second horizontal distance d2 is between the right side of the transmission region TA in the attached diagram and the first reference line RLa2 of the second light-emitting element ED2. Furthermore, the third horizontal distance d3 between the first reference line RLa1 of the first light-emitting element ED1 and the second reference line RLb (or the fourth reference line RLc) can be equal to the fourth horizontal distance d4 between the first reference line RLa2 and the second reference line RLb of the second light-emitting element ED2. Moreover, the first horizontal distance d1, the second horizontal distance d2, the third horizontal distance d3, and the fourth horizontal distance d4 can all be equal. Therefore, as described above, the first reference line RLa1 of the first light-emitting element ED1, the second reference line RLb, and the first reference line RLa2 of the second light-emitting element ED2 can equally divide the color control layer WCL or TPL on the first direction DR1.

[0334] In the display device 1 according to this embodiment, the alignment of the first light-emitting element ED1 and the second light-emitting element ED2 with the color control layer WCL or TPL can be adjusted such that the distances d1 and d2 from the respective edges of the transmission region TA to the first reference lines RLa1 and RLa2, respectively, in directions parallel to the extending directions of the first light-emitting element ED1 and the second light-emitting element ED2, are equal to the distances d3 and d4 from the second reference line RLb to the first reference lines RLa1 and RLa2 of the first light-emitting element ED1 and the second light-emitting element ED2, respectively. By doing so, the light LT emitted from the first light-emitting element ED1 and the second light-emitting element ED2 and traveling upward toward the color control layer WCL or TPL can be uniformly incident on the color control layer WCL or TPL, thereby improving the display quality of the display device 1.

[0335] In concluding this detailed description, those skilled in the art will appreciate that many variations and modifications can be made to the embodiments without substantially departing from the principles of this disclosure. Therefore, the embodiments of this disclosure are used in a general and descriptive sense only and not for limiting purposes.

Claims

1. A display device, comprising: Basic substrate; The outer embankment is on the base substrate and has an opening defining at least one emission region; A light-emitting element, comprising at least an active layer in the emitting region and extending in a first direction; An anti-color mixing component is provided on the outer embankment and has an opening that defines a transmission area; as well as The color control layer, within the opening defined by the anti-color mixing member, When viewed from above, the transmission area includes a first side edge on one side in the first direction and a second side edge on the opposite side in the first direction, and Wherein, the first distance between the first reference line passing through the center of the active layer of the light-emitting element in a second direction perpendicular to the first direction and the first side of the transmission region is equal to the second distance between the second side of the transmission region and the first reference line.

2. The display device according to claim 1, wherein, When viewed from the top, the emission region includes a first side at one side in the first direction and a second side at the opposite side in the first direction, and Wherein, the distance between the first side of the emitting region and the first side of the transmitting region is equal to the distance between the second side of the emitting region and the second side of the transmitting region.

3. The display device according to claim 2, wherein, The distance between the first side of the launch area and the first reference line is equal to the distance between the second side of the launch area and the first reference line.

4. The display device according to claim 2, wherein, The active layer is positioned closer to one side of the light-emitting element in the first direction from the center, and The distance between the first side of the emitting region and the light-emitting element is different from the distance between the second side of the emitting region and the light-emitting element.

5. The display device according to claim 1, wherein, When viewed from the top, the emission region includes a first side at one side in the first direction and a second side at the opposite side in the first direction, and Wherein, the distance between the first side of the emitting region and the light-emitting element is equal to the distance between the second side of the emitting region and the light-emitting element.

6. The display device according to claim 5, wherein, The active layer is positioned closer to one side of the light-emitting element in the first direction from the center, and The distance between the first side of the emission region and the first side of the transmission region is different from the distance between the second side of the emission region and the second side of the transmission region.

7. The display device according to claim 1, wherein, The first reference line overlaps with a second reference line that equally divides the transmission region in the first direction.

8. A display device, comprising: Basic substrate; The outer embankment is on the base substrate and has an opening that defines the emission region; The first light-emitting element and the second light-emitting element each extend in the emission region in a first direction and include at least an active layer; An anti-color mixing component is provided on the outer embankment and has an opening that defines a transmission area; as well as The color control layer, within the opening defined by the anti-color mixing member, When viewed from above, the transmission region includes a first side edge on one side in the first direction and a second side edge on the opposite side in the first direction. Wherein, the first light-emitting element is adjacent to the first side of the transmission region, and the second light-emitting element is adjacent to the second side of the transmission region. The first light-emitting element and the second light-emitting element are spaced apart from each other. Wherein, the first reference line of the first light-emitting element passes through the center of the active layer of the first light-emitting element in a second direction perpendicular to the first direction. Wherein, the first reference line of the second light-emitting element passes through the center of the active layer of the second light-emitting element in the second direction, and Wherein, the first distance between the first reference line of the first light-emitting element and the first side of the transmission region is equal to the second distance between the first reference line of the second light-emitting element and the second side of the transmission region.

9. The display device according to claim 8, wherein, The first light-emitting element and the second light-emitting element are spaced apart from each other in the first direction.

10. The display device according to claim 9, wherein, When viewed from the top, the emission region includes a first side at one side in the first direction and a second side at the opposite side in the first direction, and Wherein, the distance between the first side of the emitting region and the first side of the transmitting region is equal to the distance between the second side of the emitting region and the second side of the transmitting region.

11. The display device according to claim 10, wherein, The distance between the first side of the emission region and the first reference line of the first light-emitting element is equal to the distance between the second side of the emission region and the first reference line of the second light-emitting element.

12. The display device according to claim 10, wherein, The active layer of the first light-emitting element is positioned closer to one side in the first direction than the center of the first light-emitting element. Wherein, the active layer of the second light-emitting element is positioned closer to one side in the first direction than the center of the second light-emitting element. Wherein, the active layer of the first light-emitting element and the active layer of the second light-emitting element face the same direction, and The distance between the first side of the emission region and the first light-emitting element is different from the distance between the second side of the emission region and the second light-emitting element.

13. The display device according to claim 9, wherein, When viewed from the top, the emission region includes a first side at one side in the first direction and a second side at the opposite side in the first direction, and Wherein, the distance between the first side of the emission region and the first light-emitting element is equal to the distance between the second side of the emission region and the second light-emitting element.

14. The display device according to claim 13, wherein, The active layer of the first light-emitting element is positioned closer to one side in the first direction than the center of the first light-emitting element. Wherein, the active layer of the second light-emitting element is positioned closer to one side in the first direction than the center of the second light-emitting element. Wherein, the active layer of the first light-emitting element and the active layer of the second light-emitting element face the same direction, and The distance between the first side of the emission region and the first side of the transmission region is different from the distance between the second side of the emission region and the second side of the transmission region.

15. The display device according to claim 8, wherein, The first light-emitting element and the second light-emitting element are spaced apart from each other in a second direction perpendicular to the first direction.

16. The display device according to claim 15, wherein, Each of the first reference line of the first light-emitting element and the first reference line of the second light-emitting element overlaps with a second reference line that equally divides the transmission region in the first direction.

17. A display device, comprising: Basic substrate; The outer embankment is on the base substrate and has an opening that defines the emission region; A light-emitting element extends in a first direction within the emitting region and includes an active layer; An anti-color mixing component is provided on the outer embankment and has an opening that defines a transmission area; as well as The color control layer, within the opening defined by the anti-color mixing member, Wherein, a first reference line passing through the center of the active layer in a second direction perpendicular to the first direction overlaps with a second reference line that equally divides the transmission region in the first direction.

18. The display device according to claim 17, wherein, The distance between the first end of the light-emitting element and the first reference line is different from the distance between the second end of the light-emitting element and the first reference line.

19. The display device according to claim 18, wherein, The third reference line, which equally divides the emission area in the first direction, overlaps with the second reference line.

20. The display device according to claim 19, wherein, When viewed from above, the emission area includes a first side edge on one side in the first direction and a second side edge on the opposite side in the first direction. Wherein, the first end of the light-emitting element is spaced apart from the first side of the emitting region and faces the first side of the emitting region. Wherein, the second end of the light-emitting element is spaced apart from the second side of the emitting region and faces the second side of the emitting region, and The distance between the first side of the emitting region and the first end of the light-emitting element is different from the distance between the second side of the emitting region and the second end of the light-emitting element.

21. The display device according to claim 18, wherein, When viewed from above, the emission area includes a first side edge on one side in the first direction and a second side edge on the opposite side in the first direction. Wherein, the first end of the light-emitting element is spaced apart from the first side of the emitting region and faces the first side of the emitting region. Wherein, the second end of the light-emitting element is spaced apart from the second side of the emitting region and faces the second side of the emitting region, and Wherein, the distance between the first side of the emitting region and the first end of the light-emitting element is equal to the distance between the second side of the emitting region and the second end of the light-emitting element.

22. The display device according to claim 21, wherein, When viewed from the top, the transmission area includes a first side edge at one side in the first direction and a second side edge at the opposite side in the first direction, and The distance between the first side of the emission region and the first side of the transmission region is different from the distance between the second side of the emission region and the second side of the transmission region.

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