Tiled display apparatus

Abstract

A tiled display apparatus is provided. The tiled display apparatus includes a plurality of display apparatuses adjacent to each other, each of the display apparatuses including a plurality of first pixels and a plurality of second pixels, and a boundary area in which at least one side of each of the display apparatuses is adjacent to a side of another display apparatus and a main area other than the boundary area, wherein the first pixels are in the main area and the second pixels are in the boundary area, each of the first pixels and the second pixels includes a plurality of sub-pixels, and each of the sub-pixels of the second pixels includes a plurality of partial pixels.

Description

Technical Field

[0001] This disclosure relates to a splicing display device. Background Technology

[0002] With the development of the information society, the demand for display devices for displaying images is increasing in various forms. For example, display devices are used in various electronic devices such as smartphones, digital cameras, laptops, navigation devices, and smart TVs. Display devices can be flat panel displays such as liquid crystal displays, field emission displays, and organic light-emitting diode (OLED) displays. In flat panel displays, the light-emitting element includes a light-emitting element that enables each pixel of the display panel to emit its own light. Therefore, a light-emitting display device can display images without a backlight unit that provides light to the display panel.

[0003] When display devices are manufactured to large sizes, the defect rate of the light-emitting elements increases due to the increased number of pixels, and productivity or reliability decreases. To address these issues, splicing display devices can be implemented to provide a large screen by connecting multiple relatively small display devices. A splicing display device, achieved by aligning multiple adjacent display devices, can be considered as a large display device. Summary of the Invention

[0004] Embodiments of this disclosure provide a splicing display device that can improve the visibility of the boundary portions of display devices even when multiple display devices are misaligned.

[0005] According to the disclosed embodiments, the splicing display device includes: a plurality of display devices adjacent to each other, and each of the display devices includes a plurality of first pixels and a plurality of second pixels; and a boundary region and a main region other than the boundary region, wherein in the boundary region, at least one edge of each of the display devices is adjacent to an edge of another display device, wherein the first pixels are in the main region, the second pixels are in the boundary region, each of the first pixels and the second pixels includes a plurality of sub-pixels, and each of the sub-pixels of the second pixel includes a plurality of partial pixels.

[0006] In an embodiment, each of the first pixel and the second pixel comprises a first sub-pixel, a second sub-pixel, and a third sub-pixel that emit light of different colors and are adjacent to each other.

[0007] In an embodiment, each of the first, second, and third sub-pixels of the second pixel includes a portion pixel that emits light of the same color and is adjacent to each other. The portion pixel includes a first portion pixel and a second portion pixel that are adjacent in the short axis direction of the first sub-pixel. It also includes a third portion pixel and a fourth portion pixel, wherein the third portion pixel is located on one side of the first portion pixel in the long axis direction of the first sub-pixel, and the fourth portion pixel is located on the other side of the first portion pixel in the long axis direction of the first sub-pixel.

[0008] In this embodiment, the length of each long side of each of the first and second part pixels is equal to the length of each long side of each sub-pixel of the first pixel.

[0009] In an embodiment, the distance from the first side of the first portion of pixels to the second side of the second portion of pixels along the minor axis of the first sub-pixel is equal to the length of each minor side of each sub-pixel of each first pixel.

[0010] In this embodiment, the third and fourth pixel portions are spaced apart from each other, and the first and second pixel portions are positioned between the third and fourth pixel portions.

[0011] In an embodiment, the direction along which the long side of each of the third and fourth part pixels extends is parallel to the direction along which the short side of the first part pixel extends.

[0012] In the embodiment, the lengths of the long sides of the third and fourth part pixels are equal to each other and equal to the length of the short side of each sub-pixel of each first pixel.

[0013] In an embodiment, the length of each long side of each of the third and fourth part pixels is equal to the distance from the first side of the first part pixel to the second side of the second part pixel in the direction of the minor axis of the first sub-pixel.

[0014] In an embodiment, the first and second part pixels have the same size, and the third and fourth part pixels have the same size, with each of the first and second part pixels being larger than each of the third and fourth part pixels.

[0015] However, aspects of the embodiments of this disclosure are not limited to those set forth herein. These and other aspects of the embodiments of this disclosure will become more apparent to those skilled in the art from the following detailed description of the disclosure. Attached Figure Description

[0016] These and / or other aspects of the embodiments of this disclosure will become apparent and more readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 This is a plan view of the splicing display device according to an embodiment;

[0018] Figure 2 This is a plan view of the display device according to an embodiment;

[0019] Figure 3 It is along Figure 2 A sectional view taken by line I-I';

[0020] Figure 4 This is a plan view of the pixels of the display device according to an embodiment;

[0021] Figure 5 It is along Figure 4 A sectional view taken from line II-II';

[0022] Figure 6 A perspective cross-sectional view of a light-emitting element according to an embodiment is shown;

[0023] Figure 7 This is a plan view showing the combined structure of the splicing display device according to an embodiment;

[0024] Figure 8 It is based on Figure 7 A plan view of the first pixel of the splicing display device in an embodiment;

[0025] Figure 9 It is based on Figure 7 A plan view of the second pixel of the splicing display device according to an embodiment;

[0026] Figure 10 yes Figure 7 A schematic enlarged view of region A;

[0027] Figure 11 yes Figure 7 A schematic enlarged view of an example of region A;

[0028] Figure 12 yes Figure 7 A schematic enlarged view of another example of region A;

[0029] Figure 13 yes Figure 7 A schematic enlarged view of region B;

[0030] Figure 14 yes Figure 7 A schematic enlarged view of an example of region B;

[0031] Figure 15 yes Figure 7 A schematic enlarged view of another example of region B;

[0032] Figure 16 yes Figure 7 A schematic plan view of another embodiment of region A;

[0033] Figure 17 yes Figure 7 A schematic plan view of another embodiment of region B;

[0034] Figure 18 This is a schematic plan view illustrating the situation where each pixel of the splicing display device according to the comparative example emits white light; and

[0035] Figure 19 This is a schematic plan view illustrating the case where each pixel of the splicing display device according to an embodiment emits white light. Detailed Implementation

[0036] This disclosure will now be described more fully below with reference to the accompanying drawings, in which 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 the disclosure to those skilled in the art.

[0037] It will also be understood that when a layer is referred to as "on" another layer or substrate, the layer may be directly on said other layer or substrate, or there may be intermediate layers. Throughout the specification, the same reference numerals indicate the same components. It will also be understood that when an element or layer is referred to as "connected to," "bonded to," or "adjacent to" another element or layer, the element may be directly connected to, directly bonded to, or directly adjacent to said other element or layer, or there may be one or more intermediate elements or intermediate layers. Conversely, when an element or layer is referred to as "directly on," "directly connected to," "directly bonded to," or "immediately adjacent to" another element or layer, no intermediate element or intermediate layer exists.

[0038] 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.

[0039] For ease of description, spatial relative terms such as “below,” “under,” “below,” “below,” “above,” and “above” are used herein to describe the relationship between one element or feature and another (other) element or feature as shown in the figure. It will be understood that such spatial relative terms are intended to cover different orientations of the device in use or operation, in addition to those depicted in the figure. For example, if the device in the figure is flipped, an element described as “below,” “below,” or “below” another element or feature would subsequently be positioned “above” said other element or feature. Thus, the example terms “below” and “below” can cover both above and below orientations. The device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), and the spatial relative descriptive terms used herein should be interpreted accordingly. Additionally, it will be understood that when a layer is referred to as “between” two layers, the layer may be the only layer between the two layers, or there may be one or more intermediate layers.

[0040] 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 explain the inherent biases of measurements or calculations that will be recognized by one of ordinary skill in the art.

[0041] As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “an (kind)” are also intended to include the plural forms. It will also be understood that when the terms “comprising” and / or variations thereof are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not preclude 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 (kind) of…” modify the entire list of elements when following a list of elements, without modifying any individual elements in that list. Furthermore, in describing embodiments of this disclosure, the use of “may” refers to “one or more embodiments of this disclosure.” Additionally, the term “exemplary” is intended to indicate or illustrate. As used herein, the terms “use” and variations thereof may be considered synonymous with the terms “utilize” and variations thereof, respectively.

[0042] 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 1.0 and the described maximum value 10.0 (and including both the described minimum value 1.0 and the described maximum value 10.0) (i.e., 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.

[0043] Each of the features in the various embodiments of this disclosure can be combined in part or in whole with each other, and various interlocks and drives are technically possible. Each embodiment can be implemented independently of each other or can be implemented together in association.

[0044] In the following description, embodiments will be illustrated with reference to the accompanying drawings.

[0045] Figure 1 This is a plan view of the tiled display device TD according to an embodiment.

[0046] Reference Figure 1 The splicing display device TD may include multiple display devices 10. The display devices 10 may be arranged in a grid pattern, but this disclosure is not limited thereto. The display devices 10 may be connected to each other in a first direction (X-axis direction) or a second direction (Y-axis direction), and the splicing display device TD may have a specific shape. For example, the display devices 10 may have the same size, but this disclosure is not limited thereto. As another example, the display devices 10 may have different sizes.

[0047] Each of the display devices 10 can be shaped as a rectangle including a long side and a short side. The long side or short side of the display device 10 can be connected to each other. Some of the display devices 10 can be located at the edges of the splicing display device TD to form the edges of the splicing display device TD. Some other display devices 10 can be located at the corners of the splicing display device TD and can form two adjacent edges of the splicing display device TD. Some other display devices 10 can be located inside the splicing display device TD (e.g., located in the central area of ​​the splicing display device TD) and surrounded by other display devices 10.

[0048] Each of the display devices 10 may include a display area DA and a non-display area NDA. The display area DA may include multiple pixels to display an image. The non-display area NDA may be disposed around the display area DA to surround the display area DA and may not display an image. For example, the non-display area NDA may be disposed around the display area DA to surround the display area DA along its edge or periphery.

[0049] The overall shape of the video wall display device TD can be planar, but this disclosure is not limited thereto. The video wall display device TD can also have a three-dimensional (3D) shape to provide a 3D effect to the user. For example, when the video wall display device TD has a 3D shape, at least some of the display devices 10 can have a curved shape. As another example, all of the display devices 10 can have a planar shape, but can be connected to each other at an angle (e.g., a set or predetermined angle) so that the video wall display device TD can have a 3D shape.

[0050] A spliced ​​display device TD can be formed by connecting the non-display areas NDA of adjacent display devices 10. The display devices 10 can be connected to each other via bonding or adhesive members. Therefore, the non-display areas NDA between display devices 10 can be surrounded by adjacent display areas DA. The distance between the individual display areas DA in the display devices 10 can be small enough that the non-display areas NDA between adjacent display devices 10 or the boundary portions between adjacent display devices 10 are substantially indistinguishable to the user. In some embodiments, the external light reflectivity of each display area DA in the display devices 10 and the external light reflectivity of the non-display areas NDA between adjacent display devices 10 can be substantially equal. Therefore, the spliced ​​display device TD can substantially eliminate the sense of separation between display devices 10 and improve image immersion by preventing the non-display areas NDA or boundary portions between display devices 10 from being identified.

[0051] Figure 2 This is a plan view of the display device 10 according to an embodiment.

[0052] Reference Figure 2 The display device 10 may include a plurality of pixels arranged along a plurality of rows and columns in a display area DA. Each of the pixels may include a light-emitting area LA defined by a pixel defining layer, and may emit light having a peak wavelength (e.g., a set or predetermined peak wavelength) through the light-emitting area LA. For example, the display area DA of the display device 10 may include a first light-emitting area LA1, a second light-emitting area LA2, and a third light-emitting area LA3. Each of the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 may be an area where light generated by the light-emitting element of the display device 10 is emitted to the outside of the display device 10.

[0053] Each of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 can emit light with a peak wavelength (e.g., a set or predetermined peak wavelength) to the outside of the display device 10. The first light-emitting region LA1 can emit light of a first color, the second light-emitting region LA2 can emit light of a second color, and the third light-emitting region LA3 can emit light of a third color. For example, the first color light can be red light with a peak wavelength of 610 nm to 650 nm, the second color light can be green light with a peak wavelength of 510 nm to 550 nm, and the third color light can be blue light with a peak wavelength of 440 nm to 480 nm. However, this disclosure is not limited thereto.

[0054] The first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 can be arranged sequentially and repeatedly along the first direction (X-axis direction) of the display region DA. For example, the width of the first light-emitting region LA1 in the first direction (X-axis direction) can be larger than the width of the second light-emitting region LA2 in the first direction (X-axis direction), and the width of the second light-emitting region LA2 in the first direction (X-axis direction) can be larger than the width of the third light-emitting region LA3 in the first direction (X-axis direction). In another example, the widths of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 in the first direction (X-axis direction) can be substantially equal.

[0055] For example, the area of ​​the first luminescent region LA1 can be larger than the area of ​​the second luminescent region LA2, and the area of ​​the second luminescent region LA2 can be larger than the area of ​​the third luminescent region LA3. In another example, the areas of the first luminescent region LA1, the second luminescent region LA2, and the third luminescent region LA3 can be substantially equal.

[0056] The display area DA of the display device 10 may include multiple light-blocking areas surrounding the light-emitting area LA. For example, the display area DA may include a first light-blocking area BA1, a second light-blocking area BA2, and a third light-blocking area BA3. The first light-blocking area BA1, the second light-blocking area BA2, and the third light-blocking area BA3 may be respectively disposed on each side of the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3, and may prevent the color mixing of the light emitted from the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3.

[0057] Figure 3 It is along Figure 2 A sectional view taken by line I-I'.

[0058] Reference Figure 3 The display area DA of the display device 10 may include a first light-emitting area LA1, a second light-emitting area LA2, and a third light-emitting area LA3. Each of the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 may be an area where light generated by the light-emitting diode ED of the display device 10 is emitted to the outside of the display device 10.

[0059] The display device 10 may include a substrate SUB, a buffer layer BF, a thin film transistor layer TFTL, a light-emitting element layer EML, a wavelength conversion layer WLCL, a color filter layer CFL, and an encapsulation layer TFE.

[0060] The substrate SUB can be a matrix substrate or a matrix component, and can be made of an insulating material such as a polymer resin. For example, the substrate SUB can be a flexible substrate that can be bent, folded, rolled, etc. The substrate SUB can include, but is not limited to, polyimide (PI).

[0061] A buffer layer (BF) can be disposed on the substrate (SUB). The buffer layer (BF) can be an inorganic layer that can prevent (or reduce) the penetration of air or moisture. For example, the buffer layer (BF) may comprise multiple inorganic layers stacked alternately.

[0062] The thin-film transistor layer (TFTL) may include a thin-film transistor (TFT), a gate insulating layer (GI), an interlayer insulating layer (ILD), a connection electrode (CNE), a first passivation layer (PAS1), and a first planarization layer (OC1).

[0063] Thin-film transistors (TFTs) can be disposed on a buffer layer (BF) and can form individual pixel circuits for multiple pixels. For example, a TFT can be a driving transistor or a switching transistor for a pixel circuit. Each TFT may include a semiconductor region (ACT), a gate electrode (GE), a source electrode (SE), and a drain electrode (DE).

[0064] The semiconductor region ACT, source electrode SE, and drain electrode DE can be disposed on the buffer layer BF. The semiconductor region ACT can be stacked with the gate electrode GE in the thickness direction of the substrate SUB (the Z-axis direction perpendicular to the X-axis and Y-axis directions) and insulated from the gate electrode GE by the gate insulating layer GI. The source electrode SE and drain electrode DE can be formed by making the material of the semiconductor region ACT conductive.

[0065] The gate electrode GE can be disposed on the gate insulating layer GI. The gate electrode GE can be stacked with the semiconductor region ACT, and the gate insulating layer GI is disposed between the gate electrode GE and the semiconductor region ACT.

[0066] The gate insulating layer GI can be disposed on the semiconductor region ACT, the source electrode SE, and the drain electrode DE. For example, the gate insulating layer GI can cover the semiconductor region ACT, the source electrode SE, the drain electrode DE, and the buffer layer BF, and insulate the semiconductor region ACT from the gate electrode GE. The gate insulating layer GI may include a contact hole through which the connection electrode CNE passes.

[0067] An interlayer insulating layer (ILD) can be disposed on the gate electrode GE. For example, the ILD may include a contact hole through which the connecting electrode CNE passes. Here, the contact hole of the ILD can be connected to the contact hole of the gate insulating layer GI.

[0068] Connection electrodes CNEs can be disposed on the interlayer insulating layer (ILD). Some of the connection electrodes CNEs can connect the drain electrode DE of the thin-film transistor (TFT) and the first electrode AE ​​of the light-emitting element (EL). These connection electrodes CNEs can contact the drain electrode DE through contact holes disposed in the gate insulating layer (GI) and the interlayer insulating layer (ILD). Some of the connection electrodes CNEs can contact the source electrode SE through contact holes disposed in the gate insulating layer (GI) and the interlayer insulating layer (ILD).

[0069] The first passivation layer PAS1 can be disposed on the connection electrode CNE to protect the thin-film transistor TFT. For example, the first passivation layer PAS1 may include a contact hole through which the first electrode AE ​​of the light-emitting element EL passes.

[0070] A first planarization layer OC1 may be disposed on a first passivation layer PAS1 to planarize the top of the thin-film transistor layer TFTL. For example, the first planarization layer OC1 may include a contact hole through which the first electrode AE ​​of the light-emitting element EL passes. Here, the contact hole of the first planarization layer OC1 may be connected to the contact hole of the first passivation layer PAS1.

[0071] The light-emitting element layer EML may include a light-emitting element EL, a first insulating layer IL1, a first barrier BNK1, a second barrier BNK2, a second passivation layer PAS2, and a second planarization layer OC2.

[0072] The light-emitting element (EL) can be disposed on the thin-film transistor layer (TFTL). Each of the light-emitting elements (EL) may include a first electrode (AE), a second electrode (CE), and a light-emitting diode (ED).

[0073] The first electrode AE ​​can be disposed on the first planarization layer OC1. For example, the first electrode AE ​​can be disposed on a first dam BNK1 disposed on the first planarization layer OC1 to cover the first dam BNK1. The first electrode AE ​​can be stacked with one of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 defined by the second dam BNK2. In some embodiments, the first electrode AE ​​can be connected to the drain electrode DE of each thin-film transistor TFT. The first electrode AE ​​can be, but is not limited to, the anode of each light-emitting element EL.

[0074] The second electrode CE can be disposed on the first planarization layer OC1 and spaced apart from the first electrode AE. For example, the second electrode CE can be disposed on the first embankment BNK1 disposed on the first planarization layer OC1 to cover the first embankment BNK1. The second electrode CE can be superimposed on one of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 defined by the second embankment BNK2. For example, the second electrode CE can receive the common voltage supplied to all pixels. The second electrode CE can be, but is not limited to, the cathode of each light-emitting element EL.

[0075] The first insulating layer IL1 can cover a portion of the first electrode AE ​​and a portion of the second electrode CE that are adjacent to each other, and can insulate the first electrode AE ​​and the second electrode CE from each other.

[0076] A light-emitting diode (LED) can be disposed above a first planarization layer OC1 between a first electrode AE ​​and a second electrode CE. The LED can be disposed on a first insulating layer IL1. One end of the LED can be connected to the first electrode AE, and the other end can be connected to the second electrode CE. For example, multiple LEDs can include an active layer of the same material to emit light of the same wavelength or color. Light emitted from the first emitting region LA1, the second emitting region LA2, and the third emitting region LA3 can have the same color. For example, the LED can emit light of a third color or blue light with a peak wavelength of 440 nm to 480 nm. Therefore, the light-emitting element layer EML can emit light of a third color or blue light.

[0077] The second dam BNK2 can be disposed on the first planarization layer OC1 to define the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3. For example, the second dam BNK2 can surround each of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3, but this disclosure is not limited thereto. The second dam BNK2 can separate and insulate the first electrode AE ​​of the light-emitting element EL from the second electrode CE of the adjacent light-emitting element EL. The second dam BNK2 can be disposed in the first light-blocking region BA1 to the third light-blocking region BA3.

[0078] The second passivation layer PAS2 can be disposed on the light-emitting element EL and the second barrier BNK2. The second passivation layer PAS2 can cover and protect the light-emitting element EL. The second passivation layer PAS2 can prevent damage to the light-emitting element EL by preventing the penetration of impurities from the outside (such as moisture or air).

[0079] The second planarization layer OC2 may be disposed on the second passivation layer PAS2 to planarize the top of the light-emitting element layer EML. The second planarization layer OC2 may include an organic material. For example, the second planarization layer OC2 may include at least one of acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0080] The wavelength conversion layer (WLCL) may include a first capping layer (CAP1), a first light-blocking component (BK1), a first wavelength conversion section (WLC1), a second wavelength conversion section (WLC2), a light-transmitting section (LTU), a second capping layer (CAP2), and a third planarization layer (OC3).

[0081] The first capping layer CAP1 can be disposed on the second planarization layer OC2 of the light-emitting element layer EML. The first capping layer CAP1 can seal the lower surface of the first wavelength conversion section WLC1, the lower surface of the second wavelength conversion section WLC2, and the lower surface of the light-transmitting section LTU. The first capping layer CAP1 can include inorganic materials. For example, the first capping layer CAP1 can 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, cerium oxide, and silicon oxynitride.

[0082] A first light-blocking member BK1 can be disposed on the first capping layer CAP1 within the first light-blocking region BA1, the second light-blocking region BA2, and the third light-blocking region BA3. The first light-blocking member BK1 can be stacked with the second embankment BNK2 in the thickness direction (Z-axis direction) of the substrate SUB. The first light-blocking member BK1 can block light transmission. The first light-blocking member BK1 can prevent color mixing by preventing light intrusion between the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3, thereby improving the color gamut. The first light-blocking member BK1 can be arranged in a grid shape around the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3 in a planar view.

[0083] The first light-blocking component BK1 may include an organic light-blocking material and a liquid-repellent component. Here, the liquid-repellent component may be made of a fluorinated monomer or a fluorinated polymer, specifically, it may include a fluorinated aliphatic polycarbonate. For example, the first light-blocking component BK1 may be made of a black organic material including the liquid-repellent component. The first light-blocking component BK1 can be formed by coating and exposing the organic light-blocking material including the liquid-repellent component.

[0084] The first light-blocking member BK1, including a liquid-repellent component, can separate the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU into corresponding light-emitting regions LA. For example, when the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU are formed using an inkjet method, the ink composition can flow on the upper surface of the first light-blocking member BK1. In this case, the first light-blocking member BK1, including the liquid-repellent component, can guide the ink composition into each of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3. Therefore, the first light-blocking member BK1 can prevent the ink composition from mixing.

[0085] The first wavelength conversion unit WLC1 can be disposed on the first capping layer CAP1 in the first light-emitting region LA1. The first wavelength conversion unit WLC1 can be surrounded by the first light-blocking member BK1. The first wavelength conversion unit WLC1 may include the first matrix resin BS1, the first scatterer SCT1, and the first wavelength converter WLS1.

[0086] The first matrix resin BS1 may include a material having relatively high light transmittance. The first matrix resin BS1 may be made of a transparent organic material. For example, the first matrix resin BS1 may include at least one of organic materials such as epoxy resin, acrylic resin, calorie resin, and imide resin.

[0087] The first scatterer SCT1 may have a refractive index different from that of the first matrix resin BS1 and may form an optical interface with the first matrix resin BS1. For example, the first scatterer SCT1 may include a light-scattering material or light-scattering particles that scatter at least a portion of the transmitted light. For example, the first scatterer SCT1 may include metal oxides (such as titanium oxide (TiO2), zirconium oxide (ZrO2), aluminum oxide (Al2O3), indium oxide (In2O3), zinc oxide (ZnO), or tin oxide (SnO2)), or may include organic particles (such as acrylic resin or polyurethane resin). The first scatterer SCT1 can scatter the incident light in random directions, independent of the incident direction of the incident light, without substantially changing the peak wavelength of the incident light.

[0088] The first wavelength converter WLS1 can convert or transform the peak wavelength of the incident light to a first peak wavelength. For example, the first wavelength converter WLS1 can convert blue light provided by the display device 10 into red light with a single peak wavelength of 610 nm to 650 nm and emit red light. The first wavelength converter WLS1 can be a quantum dot, a quantum rod, or a phosphor. A quantum dot can be a particulate material that emits light of a specific color when an electron transitions from the conduction band to the valence band.

[0089] For example, quantum dots can be semiconductor nanocrystal materials. Quantum dots can have specific band gaps depending on their composition and size. Therefore, quantum dots can absorb light and then emit light with a unique wavelength. Examples of semiconductor nanocrystals containing quantum dots include group IV nanocrystals, group II-VI compound nanocrystals, group III-V compound nanocrystals, group IV-VI compound nanocrystals, and combinations thereof.

[0090] For example, quantum dots can have a core-shell structure comprising a core containing the aforementioned nanocrystals and a shell surrounding the core. The shell of each quantum dot can serve as a protective layer to maintain semiconductor properties by preventing chemical denaturation of the core and / or as a charged layer to impart electrophoretic properties to the quantum dot. The shell can be single-layered or multi-layered. The interface between the core and shell can have a concentration gradient in which the concentration of elements present in the shell decreases towards the center. The shell of each quantum dot can be, for example, a metal oxide (or non-metal oxide), a semiconductor compound, or a combination thereof.

[0091] The light emitted from the first wavelength converter WLS1 can have a full width at half maximum (FWHM) of an emission wavelength spectrum of 45 nm or less, 40 nm or less, or 30 nm or less. Therefore, the color purity and color reproducibility of the display device 10 can also be improved. In some embodiments, the light emitted from the first wavelength converter WLS1 can radiate in all directions, regardless of the incident direction of the incident light. Therefore, the lateral visibility of red displayed in the first emitting region LA1 can be improved.

[0092] A portion of the blue light provided by the light-emitting element layer EML can pass through the first wavelength conversion unit WLC1 without being converted into red light by the first wavelength converter WLS1. Of the blue light provided by the light-emitting element layer EML, the light incident on the first color filter CF1 that has not been converted by the first wavelength conversion unit WLC1 can be blocked by the first color filter CF1. In some embodiments, the blue light provided by the light-emitting element layer EML, which has been converted into red light by the first wavelength conversion unit WLC1, can be emitted to the outside through the first color filter CF1. Therefore, the first light-emitting region LA1 can emit red light.

[0093] The second wavelength conversion unit WLC2 can be disposed on the first capping layer CAP1 in the second light-emitting region LA2. The second wavelength conversion unit WLC2 can be surrounded by the first light-blocking member BK1. The second wavelength conversion unit WLC2 may include a second matrix resin BS2, a second scatterer SCT2, and a second wavelength converter WLS2.

[0094] The second matrix resin BS2 may include a material having relatively high light transmittance. The second matrix resin BS2 may be made of a transparent organic material. For example, the second matrix resin BS2 may be made of the same material as the first matrix resin BS1, or may be made of any of the materials exemplified in the description of the first matrix resin BS1.

[0095] The second scatterer SCT2 may have a refractive index different from that of the second matrix resin BS2, and may form an optical interface with the second matrix resin BS2. For example, the second scatterer SCT2 may include a light-scattering material or light-scattering particles that scatter at least a portion of the transmitted light. For example, the second scatterer SCT2 may be made of the same material as the first scatterer SCT1, or may be made of any of the materials exemplified in the description of the first scatterer SCT1. The second scatterer SCT2 may scatter the incident light in random directions, independent of the incident direction, without substantially changing the peak wavelength of the incident light.

[0096] The second wavelength converter WLS2 can convert or transform the peak wavelength of the incident light to a second peak wavelength different from the first peak wavelength of the first wavelength converter WLS1. For example, the second wavelength converter WLS2 can convert blue light provided by the display device 10 into green light with a single peak wavelength of 510 nm to 550 nm and emit green light. The second wavelength converter WLS2 can be a quantum dot, a quantum rod, or a phosphor. The second wavelength converter WLS2 can include materials that serve the same purpose as those exemplified in the description of the first wavelength converter WLS1. The second wavelength converter WLS2 can be made of quantum dots, quantum rods, or phosphors such that their wavelength conversion range differs from that of the first wavelength converter WLS1.

[0097] The light-transmitting portion LTU can be disposed on the first capping layer CAP1 within the third light-emitting region LA3. The light-transmitting portion LTU can be surrounded by the first light-blocking member BK1. The light-transmitting portion LTU can transmit incident light while maintaining the peak wavelength of the incident light. The light-transmitting portion LTU may include a third matrix resin BS3 and a third scatterer SCT3.

[0098] The third matrix resin BS3 may include a material having relatively high light transmittance. The third matrix resin BS3 may be made of a transparent organic material. For example, the third matrix resin BS3 may be made of the same material as the first matrix resin BS1 or the second matrix resin BS2, or may be made of any of the materials exemplified in the description of the first matrix resin BS1 or the second matrix resin BS2.

[0099] The third scatterer SCT3 may have a refractive index different from that of the third matrix resin BS3 and may form an optical interface with the third matrix resin BS3. For example, the third scatterer SCT3 may include a light-scattering material or light-scattering particles that scatter at least a portion of the transmitted light. For example, the third scatterer SCT3 may be made of the same material as the first scatterer SCT1 or the second scatterer SCT2, or may be made of any of the materials exemplified in the description of the first scatterer SCT1 or the second scatterer SCT2. The third scatterer SCT3 can scatter incident light in random directions, independent of the incident direction, without substantially changing the peak wavelength of the incident light.

[0100] Because the wavelength conversion layer WLCL is directly disposed on the second planarization layer OC2 of the light-emitting element layer EML, the display device 10 does not require separate substrates for the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU. Therefore, the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU can be easily aligned in the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3, respectively, and the thickness of the display device 10 can be relatively reduced.

[0101] The second capping layer CAP2 may cover the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, the light-transmitting section LTU, and the first light-blocking member BK1. For example, the second capping layer CAP2 can prevent damage or contamination to the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU by sealing them. The second capping layer CAP2 may be made of the same material as the first capping layer CAP1, or it may be made of any of the materials exemplified in the description of the first capping layer CAP1.

[0102] The third planarization layer OC3 may be disposed on the second capping layer CAP2 to planarize the top of the first wavelength conversion section WLC1, the second wavelength conversion section WLC2, and the light-transmitting section LTU. The third planarization layer OC3 may include an organic material. For example, the third planarization layer OC3 may include at least one of acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0103] The color filter layer CFL may include a second light-blocking member BK2, a first color filter CF1, a second color filter CF2, a third color filter CF3, and a third passivation layer PAS3.

[0104] The second light-blocking component BK2 can be disposed on the third planarization layer OC3 of the wavelength conversion layer WLCL within the first light-blocking region BA1, the second light-blocking region BA2, and the third light-blocking region BA3. The second light-blocking component BK2 can be stacked with the first light-blocking component BK1 or the second light-blocking component BK2 in the thickness direction (Z-axis direction) of the substrate SUB. The second light-blocking component BK2 can block light transmission.

[0105] The second light-blocking component BK2 can prevent color mixing by preventing light intrusion between the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3, thereby improving the color gamut. The second light-blocking component BK2 can be arranged in a grid shape around the first light-emitting area LA1, the second light-emitting area LA2, and the third light-emitting area LA3 in a planar view.

[0106] A first color filter CF1 can be disposed on a third planarization layer OC3 within a first light-emitting region LA1. The first color filter CF1 can be surrounded by a second light-blocking member BK2. The first color filter CF1 can be superimposed on a first wavelength conversion section WLC1 in the thickness direction (Z-axis direction) of the substrate SUB. The first color filter CF1 can selectively transmit light of a first color (e.g., red light) and block or absorb light of a second color (e.g., green light) and a third color (e.g., blue light). For example, the first color filter CF1 can be a red color filter and can include a red colorant. The red colorant can be made of red dye or red pigment.

[0107] A second color filter CF2 can be disposed on a third planarization layer OC3 within a second light-emitting region LA2. The second color filter CF2 can be surrounded by a second light-blocking member BK2. The second color filter CF2 can be superimposed on a second wavelength conversion section WLC2 in the thickness direction (Z-axis direction) of the substrate SUB. The second color filter CF2 can selectively transmit light of a second color (e.g., green light) and block or absorb light of a first color (e.g., red light) and a third color (e.g., blue light). For example, the second color filter CF2 can be a green color filter and can include a green colorant. The green colorant can be made of green dye or green pigment.

[0108] A third color filter CF3 can be disposed on a third planarization layer OC3 within a third light-emitting region LA3. The third color filter CF3 can be surrounded by a second light-blocking member BK2. The third color filter CF3 can be superimposed on a light-transmitting portion LTU in the thickness direction (Z-axis direction) of the substrate SUB. The third color filter CF3 can selectively transmit light of a third color (e.g., blue light) and block or absorb light of a first color (e.g., red light) and a second color (e.g., green light). For example, the third color filter CF3 can be a blue color filter and can include a blue colorant. The blue colorant can be made of blue dye or blue pigment.

[0109] The first color filter CF1, the second color filter CF2, and the third color filter CF3 can absorb a portion of the light from outside the display device 10, thereby reducing reflected light caused by external light. Therefore, the first color filter CF1, the second color filter CF2, and the third color filter CF3 can prevent color distortion caused by the reflection of external light.

[0110] Because the first color filter CF1, the second color filter CF2, and the third color filter CF3 are directly disposed on the third planarization layer OC3 of the wavelength conversion layer WLCL, the display device 10 does not require separate substrates for the first color filter CF1, the second color filter CF2, and the third color filter CF3. Therefore, the thickness of the display device 10 can be relatively reduced.

[0111] The third passivation layer PAS3 can cover the first color filter CF1, the second color filter CF2, and the third color filter CF3. The third passivation layer PAS3 can protect the first color filter CF1, the second color filter CF2, and the third color filter CF3.

[0112] The encapsulation layer TFE can be disposed on the third passivation layer PAS3 of the color filter layer CFL. The encapsulation layer TFE can cover the top and side surfaces of the display layer. For example, the encapsulation layer TFE may include at least one inorganic layer to prevent the penetration of oxygen or moisture. In some embodiments, the encapsulation layer TFE may include at least one organic layer to protect the display device 10 from foreign matter such as dust.

[0113] Figure 4 This is a plan view of the pixels PX of the display device 10 according to an embodiment.

[0114] Reference Figure 4 Each of the multiple pixels PX may include a first sub-pixel SP1, a second sub-pixel SP2, and a third sub-pixel SP3. The first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may correspond to a first light-emitting region LA1, a second light-emitting region LA2, and a third light-emitting region LA3, respectively. The light-emitting diodes ED of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may emit light that passes through the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3, respectively.

[0115] The first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can emit light of the same color. For example, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can all include the same type of light-emitting diode (LED) and emit light of a third color or blue light. In another example, the first sub-pixel SP1 can emit light of a first color or red light, the second sub-pixel SP2 can emit light of a second color or green light, and the third sub-pixel SP3 can emit light of a third color or blue light.

[0116] Each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may include a first electrode AE ​​and a second electrode CE, a light-emitting diode ED, multiple contact electrodes CTE, and multiple second electrodes BNK2.

[0117] The first electrode AE ​​and the second electrode CE can be electrically connected to the light-emitting diode ED to receive voltage (e.g., set or predetermined voltage), and the light-emitting diode ED can emit light of a specific wavelength. At least a portion of each of the first electrode AE ​​and the second electrode CE can form an electric field in the pixel PX, and the light-emitting diode ED can be aligned by the electric field.

[0118] For example, the first electrode AE ​​can be a separate pixel electrode for each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3, and the second electrode CE can be a common electrode for the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 that are commonly connected. Either the first electrode AE ​​or the second electrode CE can be the anode of each light-emitting diode ED, and the other can be the cathode of each light-emitting diode ED.

[0119] The first electrode AE ​​may include a first electrode main body AE1 extending in a first direction (X-axis direction) and one or more first electrode branches AE2 branching from the first electrode main body AE1 to extend in a direction opposite to the second direction (Y-axis direction).

[0120] The first electrode main stem AE1 of each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can be spaced apart from the first electrode main stem AE1 of the adjacent sub-pixel, and can be set on an imaginary extension line of the first electrode main stem AE1 of the adjacent sub-pixel along the first direction (X-axis direction). Each first electrode main stem AE1 of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can receive different signals and can be driven independently.

[0121] The first electrode branch AE2 can branch from the first electrode main body AE1 to extend in a direction opposite to the second direction (Y-axis direction). One end of each first electrode branch AE2 can be connected to the first electrode main body AE1, and the other end of each first electrode branch AE2 can be spaced apart from the second electrode main body CE1 facing the first electrode main body AE1.

[0122] The second electrode CE may include a main second electrode CE1 extending in a first direction (X-axis direction) and a branch second electrode CE2 branching from the main second electrode CE1 to extend in a second direction (Y-axis direction). The main second electrode CE1 of each of the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may be connected to the main second electrode CE1 of the adjacent sub-pixel. The main second electrode CE1 may extend across multiple pixels PX (and across each pixel PX's first sub-pixel SP1, second sub-pixel SP2, and third sub-pixel SP3) in the first direction (X-axis direction). The main second electrode CE1 may be connected to the periphery of the display area DA or to a portion extending in one direction within the non-display area NDA.

[0123] The second electrode branch CE2 can be spaced apart from the first electrode branch AE2 so as to face them. One end of the second electrode branch CE2 can be connected to the second electrode main body CE1, and the other end of the second electrode branch CE2 can be spaced apart from the first electrode main body AE1.

[0124] The first electrode AE ​​can be electrically connected to the thin-film transistor layer TFTL of the display device 10 through the first contact hole CNT1, and the second electrode CE can be electrically connected to the thin-film transistor layer TFTL of the display device 10 through the second contact hole CNT2. For example, the first contact hole CNT1 can be provided in each first electrode main body AE1, and the second contact hole CNT2 can be provided in the second electrode main body CE1, but this disclosure is not limited thereto.

[0125] The second dike BNK2 can be disposed at the boundary between multiple pixels PX (and disposed across the first sub-pixel SP1, second sub-pixel SP2, and third sub-pixel SP3 of each pixel PX and between the first sub-pixel SP1, second sub-pixel SP2, and third sub-pixel SP3 of each pixel PX). Multiple first electrode main bodies AE1 can be spaced apart from each other by the second dike BNK2. The second dike BNK2 can extend in a second direction (Y-axis direction) and can be disposed at the boundary of sub-pixels SP arranged along a first direction (X-axis direction). Additionally, the second dike BNK2 can be disposed at the boundary of sub-pixels SP arranged along the second direction (Y-axis direction). The second dike BNK2 can define the boundary of a pixel PX or the boundary of each of the sub-pixels SP.

[0126] When ink in which light-emitting diodes (LEDs) are dispersed is sprayed during the manufacturing of the display device 10, the second barrier BNK2 prevents the ink from crossing the boundaries of adjacent pixels (PX). The second barrier BNK2 can separate ink in which different LEDs are dispersed, so that the ink does not mix with each other.

[0127] A light-emitting diode (LED) can be disposed between a first electrode AE ​​and a second electrode CE. A first terminal of the LED can be connected to the first electrode AE, and a second terminal of the LED can be connected to the second electrode CE. For example, the LED can be connected to the first electrode AE ​​via a first contact electrode CTE1, and to the second electrode CE via a second contact electrode CTE2.

[0128] Light-emitting diodes (LEDs) can be spaced apart from each other and aligned substantially parallel to each other. The gap between LEDs is not particularly limited. Some LEDs can be arranged adjacent to each other, while others can be spaced apart (e.g., spaced apart by a predetermined distance), and still others can be arranged at a non-uniform density but aligned in a specific direction. For example, each LED can be arranged in a direction perpendicular to the direction along which each first electrode branch AE2 or second electrode branch CE2 extends. As another example, each LED can be arranged in a direction inclined relative to the direction along which each first electrode branch AE2 or second electrode branch CE2 extends.

[0129] A light-emitting diode (ED) may include an active layer of the same material to emit light of the same wavelength or the same color. The first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may emit light of the same color. For example, the ED may emit light of a third color or blue light with a peak wavelength of 440 nm to 480 nm. Therefore, the light-emitting element layer (EML) of the display device 10 may emit light of a third color or blue light. In another example, the first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 may include EDs with different active layers to emit light of different colors.

[0130] The contact electrode CTE may include a first contact electrode CTE1 and a second contact electrode CTE2. The first contact electrode CTE1 may cover a portion of the first electrode branch AE2 and each light-emitting diode ED, and may electrically connect the first electrode branch AE2 and the light-emitting diode ED to each other. The second contact electrode CTE2 may cover another portion of the second electrode branch CE2 and each light-emitting diode ED, and may electrically connect the second electrode branch CE2 and the light-emitting diode ED.

[0131] The first contact electrode CTE1 can be disposed on the first electrode branch AE2 and extend in the second direction (Y-axis direction). The first contact electrode CTE1 can contact the first end of the light-emitting diode ED. The light-emitting diode ED can be electrically connected to the first electrode AE ​​through the first contact electrode CTE1.

[0132] The second contact electrode CTE2 can be disposed on the second electrode branch CE2 and extend in the second direction (Y-axis direction). The second contact electrode CTE2 can be spaced apart from the first contact electrode CTE1 in the first direction (X-axis direction). The second contact electrode CTE2 can contact the second terminal of the light-emitting diode ED. The light-emitting diode ED can be electrically connected to the second electrode CE through the second contact electrode CTE2.

[0133] For example, the widths of the first contact electrode CTE1 and the second contact electrode CTE2 may be larger than the widths of the first electrode branch AE2 and the second electrode branch CE2. In another example, the first contact electrode CTE1 and the second contact electrode CTE2 may respectively cover the respective sides of the first electrode branch AE2 and the second electrode branch CE2.

[0134] Figure 5 It is along Figure 4 The sectional view taken from line II-II'.

[0135] Reference Figure 5 The light-emitting element layer EML of the display device 10 can be disposed on the thin film transistor layer TFTL, and can include a first insulating layer IL1, a second insulating layer IL2 and a third insulating layer IL3.

[0136] Multiple first dams BNK1 can be disposed in each of the first light-emitting region LA1, the second light-emitting region LA2, and the third light-emitting region LA3. Each of the first dams BNK1 can correspond to a first electrode AE ​​or a second electrode CE. Each of the first electrode AE ​​and the second electrode CE can be disposed on the corresponding first dam BNK1. For example, each of the first electrode branch AE2 and the second electrode branch CE2 can be disposed on the corresponding first dam BNK1. The first dams BNK1 can include, but are not limited to, polyimide (PI).

[0137] The first dam BNK1 may be disposed on the first planarization layer OC1, and the side surface of each of the first dam BNK1 may be inclined relative to the first planarization layer OC1. For example, each of the first electrode AE ​​and the second electrode CE may include a material with high reflectivity and may be disposed on the inclined surface of the first dam BNK1 to reflect light incident from the light-emitting diode ED onto the display device 10.

[0138] Combination Figure 4 Reference Figure 5 The first electrode main body AE1 may include a first contact hole CNT1 penetrating the first planarization layer OC1. The first electrode main body AE1 can be electrically connected to the thin-film transistor TFT through the first contact hole CNT1. Therefore, the first electrode AE ​​can receive electrical signals (e.g., setting or pre-setting electrical signals) from the thin-film transistor TFT.

[0139] The second electrode main body CE1 can extend in the first direction (X-axis direction) and can also be disposed in a non-light-emitting area where no light-emitting diode ED is disposed. The second electrode main body CE1 can include a second contact hole CNT2 penetrating the first planarization layer OC1. The second electrode main body CE1 can be electrically connected to the power supply electrode through the second contact hole CNT2. The second electrode CE can receive electrical signals (e.g., setting or pre-setting electrical signals) from the power supply electrode.

[0140] The first electrode AE ​​and the second electrode CE may comprise a transparent conductive material. For example, each of the first electrode AE ​​and the second electrode CE may comprise, but is not limited to, at least one of indium tin oxide (ITO), indium zinc oxide (IZO), and indium tin zinc oxide (ITZO).

[0141] The first electrode AE ​​and the second electrode CE may comprise conductive materials with high reflectivity. For example, the first electrode AE ​​and the second electrode CE may comprise metals with high reflectivity, such as silver (Ag), copper (Cu), or aluminum (Al). The first electrode AE ​​and the second electrode CE can reflect light incident from the light-emitting diode ED onto the display device 10.

[0142] Each of the first electrode AE ​​and the second electrode CE may have a structure in which the transparent conductive material and the highly reflective metal are stacked in one or more layers or may be formed as a single layer comprising them. For example, each of the first electrode AE ​​and the second electrode CE may have a stacked structure of ITO / Ag / ITO / IZO, or may be an alloy including aluminum (Al), nickel (Ni) or lanthanum (La), but this disclosure is not limited thereto.

[0143] A first insulating layer IL1 may be disposed on the first planarization layer OC1, the first electrode AE, and the second electrode CE. The first insulating layer IL1 may cover a portion of each of the first electrode AE ​​and the second electrode CE. For example, the first insulating layer IL1 may expose the portions of the first electrode AE ​​and the second electrode CE corresponding to the upper surface of the first dam BNK1, and may cover the portions of the first electrode AE ​​and the second electrode CE that do not correspond to the upper surface of the first dam BNK1. Therefore, the first insulating layer IL1 may include openings that expose the portions of the first electrode AE ​​and the second electrode CE corresponding to the upper surface of the first dam BNK1.

[0144] For example, the first insulating layer IL1 may include an inorganic insulating material and include a recessed step between the first electrode AE ​​and the second electrode CE. The second insulating layer IL2 may fill the recessed step of the first insulating layer IL1. Therefore, the second insulating layer IL2 may planarize the upper surface of the first insulating layer IL1, and the light-emitting diode ED may be disposed on the first insulating layer IL1 and the second insulating layer IL2.

[0145] The first insulating layer IL1 protects the first electrode AE ​​and the second electrode CE, and insulates the first electrode AE ​​and the second electrode CE from each other. The first insulating layer IL1 prevents the light-emitting diode ED from directly contacting other components and thus prevents the light-emitting diode ED from being damaged.

[0146] A light-emitting diode (LED) can be disposed between a first electrode AE ​​and a second electrode CE on a first insulating layer IL1 and a second insulating layer IL2. A first terminal of the LED can be connected to the first electrode AE, and a second terminal of the LED can be connected to the second electrode CE. For example, the LED can be connected to the first electrode AE ​​via a first contact electrode CTE1, and to the second electrode CE via a second contact electrode CTE2.

[0147] The third insulating layer IL3 can be disposed on a portion of the light-emitting diode ED located between the first electrode AE ​​and the second electrode CE. The third insulating layer IL3 can partially cover the outer surface of the light-emitting diode ED. The third insulating layer IL3 can protect the light-emitting diode ED.

[0148] The contact electrode CTE may include a first contact electrode CTE1 and a second contact electrode CTE2. The first contact electrode CTE1 may cover a portion of the light-emitting diode ED and the first electrode branch AE2, and may electrically connect the first electrode branch AE2 and the light-emitting diode ED. The second contact electrode CTE2 may cover another portion of the light-emitting diode ED and the second electrode branch CE2, and may electrically connect the second electrode branch CE2 and the light-emitting diode ED.

[0149] The contact electrode CTE may include a conductive material. For example, the first contact electrode CTE1 and the second contact electrode CTE2 may include, but are not limited to, ITO, IZO, ITZO, or aluminum (Al).

[0150] Figure 6 A perspective cross-sectional view of a light-emitting diode (ED) according to an embodiment is shown.

[0151] Reference Figure 6Light-emitting diodes (EDs) can be provided. For example, an ED can be an inorganic ED with nanometer or micrometer dimensions and made of inorganic materials. An inorganic ED can be aligned between two electrodes that are polarized when an electric field is formed in a specific direction between two electrodes facing each other (or opposite each other). An ED can be aligned between two electrodes by the electric field formed between them.

[0152] The light-emitting diode (ED) according to the embodiment can extend in one direction. The ED can be shaped as a cylinder, rod, wire, or tube, etc. However, the shape of the ED is not limited to this; the ED can also have various shapes including polygonal prisms (such as cubes, cuboids, and hexagonal prisms) and shapes extending in one direction with a partially inclined outer surface. Multiple semiconductor layers included in the ED can be sequentially arranged or stacked along one direction (e.g., the direction of extension of the ED).

[0153] A light-emitting diode (ED) can comprise a semiconductor layer doped with impurities of any conductivity type (e.g., p-type or n-type). The semiconductor layer can receive electrical signals from an external power source and emit light of a specific wavelength.

[0154] A light-emitting diode (ED) may include a first semiconductor layer 111, a second semiconductor layer 113, an active layer 115, an electrode layer 117, and an insulating film 118.

[0155] The first semiconductor layer 111 can be an n-type semiconductor. For example, when the light-emitting diode (ED) emits blue light, the first semiconductor layer 111 can include a semiconductor with the chemical formula Al. x Ga y In 1-x-y The first semiconductor layer 111 may comprise at least one semiconductor material selected from n-type doped AlGaInN, GaN, AlGaN, InGaN, AlN, and InN. The first semiconductor layer 111 may be doped with an n-type dopant (such as Si, Ge, Se, or Sn). The first semiconductor layer 111 may be n-GaN doped with n-type Si. The length of the first semiconductor layer 111 may be, but is not limited to, 1.5 μm to 5 μm.

[0156] The second semiconductor layer 113 may be disposed on the active layer 115. For example, when the light-emitting diode (ED) emits blue or green light, the second semiconductor layer 113 may include materials with the chemical formula Al. x Ga y In 1-x-yA semiconductor material of type N (0≤x≤1, 0≤y≤1, 0≤x+y≤1). For example, the second semiconductor layer 113 may comprise at least one semiconductor material selected from p-type doped AlGaInN, GaN, AlGaN, InGaN, AlN, and InN. The second semiconductor layer 113 may be doped with a p-type dopant (such as Mg, Zn, Ca, or Ba). The second semiconductor layer 113 may be p-GaN doped with p-type Mg. The length of the second semiconductor layer 113 may be, but is not limited to, in the range of 0.05 μm to 0.10 μm.

[0157] Each of the first semiconductor layer 111 and the second semiconductor layer 113 may be formed as a single layer, but this disclosure is not limited thereto. For example, each of the first semiconductor layer 111 and the second semiconductor layer 113 may have multiple layers including a cladding layer or a tensile strain barrier reduction (TSBR) layer.

[0158] An active layer 115 may be disposed between a first semiconductor layer 111 and a second semiconductor layer 113. The active layer 115 may comprise a material having a single quantum well structure or a multiple quantum well structure. When the active layer 115 comprises a material having a multiple quantum well structure, it may have a structure in which multiple quantum layers and multiple well layers are alternately stacked. The active layer 115 emits light according to an electrical signal received through the first semiconductor layer 111 and the second semiconductor layer 113 via the recombination of electron-hole pairs. For example, when the active layer 115 emits blue light, it may comprise a material such as AlGaN or AlGaInN. When the active layer 115 has a multiple quantum well structure in which quantum layers and well layers are alternately stacked, the quantum layers may comprise a material such as AlGaN or AlGaInN, and the well layers may comprise a material such as GaN or AlInN. The active layer 115 may comprise AlGaInN as a quantum layer and AlInN as a well layer to emit blue light.

[0159] In another example, the active layer 115 may have a structure in which semiconductor materials with large bandgap energies and semiconductor materials with small bandgap energies are alternately stacked, depending on the wavelength of the light emitted, or may include different group III to group V semiconductor materials. The light emitted from the active layer 115 is not limited to blue light. In some cases, the active layer 115 may emit red or green light. The length of the active layer 115 may be, but is not limited to, in the range of 0.05 μm to 0.10 μm.

[0160] The light emitted from the active layer 115 can radiate not only in the longitudinal direction of the light-emitting diode (ED), but also towards both side surfaces of the ED. In other words, the direction of the light emitted from the active layer 115 is unrestricted.

[0161] Electrode layer 117 may be an ohmic contact electrode. Optionally, electrode layer 117 may be a Schottky contact electrode. A light-emitting diode (ED) may include at least one electrode layer 117. When the ED is electrically connected to an electrode or contact electrode CTE, electrode layer 117 may reduce the resistance between the ED and the electrode or contact electrode CTE. Electrode layer 117 may contain a conductive metal. For example, electrode layer 117 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). Electrode layer 117 may include an n-type or p-type doped semiconductor material.

[0162] The insulating film 118 may surround the outer surface (e.g., the outer peripheral surface) of the semiconductor layer and the electrode layer. The insulating film 118 may surround the outer surface of the active layer 115 and extend in the direction along which the light-emitting diode ED extends. The insulating film 118 may protect the light-emitting diode ED. For example, the insulating film 118 may surround the side surface of the light-emitting diode ED and expose both ends of the light-emitting diode ED in the longitudinal direction.

[0163] The insulating film 118 may include, for example, silicon oxide (SiO2). x ), silicon nitride (SiN) x ), silicon oxynitride (SiO) x N y The insulating film 118 is made of insulating materials such as aluminum nitride (AlN) or aluminum oxide (Al2O3). Therefore, the insulating film 118 can prevent electrical short circuits that may occur when the active layer 115 directly contacts the electrodes through which electrical signals are transmitted to the light-emitting diode (ED). In some embodiments, the insulating film 118 can prevent a decrease in luminous efficiency by protecting the outer surface of the light-emitting diode (ED).

[0164] Figure 7 This is a plan view showing the combined structure of the splicing display device TD according to an embodiment. Figure 8 It is based on Figure 7 A plan view of the first pixel PX1 of the splicing display device TD in an embodiment. Figure 9 It is based on Figure 7 A plan view of the second pixel PX2 of the splicing display device TD in an embodiment.

[0165] Reference Figure 7 According to an embodiment, the splicing display device TD may include multiple display devices PA1, PA2, PA3, and PA4. For example, the splicing display device TD may include a first display device PA1, a second display device PA2, a third display device PA3, and a fourth display device PA4. However, the number of display devices is not limited to this. Figure 7The number of display devices can be adjusted according to the size of the splicing display device TD. For example, two or more display devices can be arranged adjacent to each other in one direction.

[0166] Each of the display devices PA1, PA2, PA3, and PA4 can be shaped like a rectangle including a long side and a short side. Each long side of each of the display devices PA1, PA2, PA3, and PA4 can extend in a first direction (X-axis direction), and each short side of each of the display devices PA1, PA2, PA3, and PA4 can extend in a second direction (Y-axis direction). The long and short sides of the display devices PA1, PA2, PA3, and PA4 can be arranged adjacent to each other or can contact each other. For example, the first short side SS1 of the first display device PA1 can contact the second short side SS2 of the adjacent second display device PA2, and the first long side LS1 of the first display device PA1 can contact the third long side LS3 of the adjacent third display device PA3. The second long side LS2 of the second display device PA2 can contact the fourth long side LS4 of the adjacent fourth display device PA4, and the third short side SS3 of the third display device PA3 can contact the fourth short side SS4 of the adjacent fourth display device PA4.

[0167] In an embodiment, the splicing display device TD may include a boundary region BA and a main region MA. In the boundary region BA, at least one edge of each of the display devices PA1, PA2, PA3 and PA4 is adjacent to an edge of another display device. The main region MA is the region other than the boundary region BA.

[0168] The boundary region BA can be the area where the long sides of display devices PA1, PA2, PA3, and PA4 are adjacent to each other, and the area where the short sides of display devices PA1, PA2, PA3, and PA4 are adjacent to each other. For example, the boundary region BA can include the area where the first long side LS1 of the first display device PA1 and the third long side LS3 of the third display device PA3 are adjacent to each other, the area where the second long side LS2 of the second display device PA2 and the fourth long side LS4 of the fourth display device PA4 are adjacent to each other, the area where the first short side SS1 of the first display device PA1 and the second short side SS2 of the second display device PA2 are adjacent to each other, and the area where the third short side SS3 of the third display device PA3 and the fourth short side SS4 of the fourth display device PA4 are adjacent to each other.

[0169] The boundary region BA can extend in a first direction (X-axis direction) between the first display device PA1 and the third display device PA3, and between the second display device PA2 and the fourth display device PA4. Furthermore, the boundary region BA can extend in a second direction (Y-axis direction) between the first display device PA1 and the second display device PA2, and between the third display device PA3 and the fourth display device PA4.

[0170] The main region MA can be the region excluding the boundary regions BA from display devices PA1, PA2, PA3, and PA4. The main region MA is the region in display devices PA1, PA2, PA3, and PA4 that contains most of the pixels PX and can occupy a large portion of the area of ​​the splicing display device TD. The main region MA can include multiple main regions, and may include a first main region MA1 in the first display device PA1, a second main region MA2 in the second display device PA2, a third main region MA3 in the third display device PA3, and a fourth main region MA4 in the fourth display device PA4. The main regions MA can be spaced apart from each other, with the boundary regions BA located between them. For example, the first main region MA1 of the first display device PA1 can be spaced apart from the second main region MA2 of the second display device PA2 in a first direction (X-axis direction), with the boundary regions BA located between them. The first main region MA1 of the first display device PA1 can be spaced apart from the third main region MA3 of the third display device PA3 in a second direction (Y-axis direction), with the boundary regions BA located between them. The third main region MA3 of the third display device PA3 can be spaced apart from the fourth main region MA4 of the fourth display device PA4 in the first direction (X-axis direction), and the boundary region BA is placed between them.

[0171] Each of the display devices PA1, PA2, PA3, and PA4 can display an image by comprising multiple pixels PX, each pixel PX comprising multiple subpixels SP. For the display devices PA1, PA2, PA3, and PA4 to display a seamlessly integrated image, the pixels PX need to be aligned in a first direction (X-axis direction) and a second direction (Y-axis direction). When the display devices PA1, PA2, PA3, and PA4 are not aligned in the first direction (X-axis direction) or the second direction (Y-axis direction), the arrangement of the pixels PX may be distorted in the boundary region BA, resulting in visible boundaries.

[0172] In one embodiment, the sub-pixel structure can differ in the main region MA and the boundary region BA to improve the visibility of the boundaries of the splicing display device TD.

[0173] Combination Figure 7 Reference Figure 8The main region MA may include a plurality of first pixels PX1. The first pixels PX1 may be arranged in a matrix shape consisting of multiple rows and columns. Each of the first pixels PX1 may include a plurality of subpixels SP that emit light of different colors and are arranged adjacent to each other. Subpixels SP may include a first subpixel SP1, a second subpixel SP2, and a third subpixel SP3. Subpixels SP may have the same size. However, this disclosure is not limited thereto, and subpixels SP may also have different sizes.

[0174] Combination Figure 7 Reference Figure 9 The boundary region BA may include a plurality of second pixels PX2. The second pixels PX2 may be arranged in two rows or two columns. The second pixels PX2 may be arranged in two rows in the region where the long sides of display devices PA1, PA2, PA3, and PA4 are adjacent to each other, and may be arranged in two columns in the region where the short sides of display devices PA1, PA2, PA3, and PA4 are adjacent to each other. For example, the second pixels PX2 may be arranged in a total of two rows including one row formed by a plurality of second pixels PX2 of the first display device PA1 and one row formed by a plurality of second pixels PX2 of the third display device PA3. Furthermore, the second pixels PX2 may be arranged in a total of two rows including one row formed by a plurality of second pixels PX2 of the second display device PA2 and one row formed by a plurality of second pixels PX2 of the fourth display device PA4. However, this disclosure is not limited thereto, and the second pixels PX2 may also be arranged in three or more rows.

[0175] In some embodiments, the second pixel PX2 may be configured to include a total of two columns, comprising one column formed by a plurality of second pixels PX2 of the first display device PA1 and another column formed by a plurality of second pixels PX2 of the second display device PA2. The second pixel PX2 may also be configured to include a total of two columns, comprising one column formed by a plurality of second pixels PX2 of the third display device PA3 and another column formed by a plurality of second pixels PX2 of the fourth display device PA4. However, this disclosure is not limited thereto, and the second pixel PX2 may also be configured to include three or more columns.

[0176] Similar to the first pixel PX1 described above, each of the second pixels PX2 may include a plurality of subpixels SP that emit light of different colors and are arranged adjacent to each other. Subpixels SP may include a first subpixel SP1, a second subpixel SP2, and a third subpixel SP3. Subpixels SP may have the same size and / or shape. However, this disclosure is not limited thereto, and subpixels SP may also have different sizes and / or shapes.

[0177] Unlike the subpixels SP in each first pixel PX1, each subpixel SP in each second pixel PX2 can be divided into multiple partial pixels PSP. Partial pixels PSP can emit light of the same color. For example, partial pixels PSP of the first subpixel SP1 can emit all light of the first color, partial pixels PSP of the second subpixel SP2 can emit all light of the second color, and partial pixels PSP of the third subpixel SP3 can emit all light of the third color.

[0178] The first sub-pixel SP1, the second sub-pixel SP2, and the third sub-pixel SP3 can have the same shape. The first sub-pixel SP1 will be described in detail below as an example.

[0179] The first sub-pixel SP1 may include a first portion pixel PSP1, a second portion pixel PSP2, a third portion pixel PSP3, and a fourth portion pixel PSP4 arranged adjacent to each other. The first portion pixel PSP1 and the second portion pixel PSP2 may be arranged adjacent to each other in the minor axis direction (i.e., the first direction (X-axis direction) of the first sub-pixel SP1), but may be spaced apart. The first portion pixel PSP1 and the second portion pixel PSP2 may have substantially the same size and shape. The length L1 of each long side of each of the first portion pixel PSP1 and the second portion pixel PSP2 may be equal to the length L2 of each long side of the first sub-pixel SP1 of each of the first pixels PX1 described above (see...). Figure 8 The distance L3 from the first side (e.g., the first long side) of the first pixel PSP1 to the second side (e.g., the second long side) of the second pixel PSP2 can be equal to the length L4 of each short side of the first sub-pixel SP1 of each first pixel PX1 (see above). Figure 8 In other words, the first part of the first sub-pixel SP1 and the second part of the second pixel PX2 can have the size of the first sub-pixel SP1 of each first pixel PX1.

[0180] The third pixel PSP3 can be positioned on one side of the first pixel PSP1 or the second pixel PSP2 along the long axis (i.e., the second direction (Y-axis direction) of the first sub-pixel SP1). The fourth pixel PSP4 can be positioned on the other side of the first pixel PSP1 or the second pixel PSP2 in the direction opposite to the long axis (i.e., the second direction (Y-axis direction) of the first sub-pixel SP1). In other words, the third pixel PSP3 and the fourth pixel PSP4 can be spaced apart from each other, with the first pixel PSP1 and the second pixel PSP2 positioned between them. The direction along which the long side of each of the third pixel PSP3 and the fourth pixel PSP4 extends can be parallel to the direction along which the short side of the first pixel PSP1 or the second pixel PSP2 extends. That is, the direction along which the long side of each of the third pixel PSP3 and the fourth pixel PSP4 extends can be a first direction (X-axis direction).

[0181] The third pixel PSP3 and the fourth pixel PSP4 can have substantially the same size and shape. The length L5 of each long side of each of the third pixel PSP3 and the fourth pixel PSP4 can be equal to the length L4 of each short side of the first sub-pixel SP1 of each of the first pixels PX1 (see above). Figure 8 The length L5 of each long side of each of the third and fourth pixel PSP3 and PSP4 can be equal to the distance L3 from the first side of the first pixel PSP1 to the second side of the second pixel PSP2. The length L6 of each short side of each of the third and fourth pixel PSP4 can be less than the length L1 of each long side of the first pixel PSP1. The length L6 of each short side of each of the third and fourth pixel PSP4 can be related to the alignment tolerance of each of the display devices PA1, PA2, PA3, and PA4 and the distance of misalignment visible to the user. For example, the length L6 of each short side of each of the third and fourth pixel PSP4 can be a value obtained by subtracting the distance of misalignment visible to the user from the alignment tolerance distance of each of the display devices PA1, PA2, PA3, and PA4.

[0182] Based on the aforementioned sub-pixel SP, the sub-pixel SP of each second pixel PX2 can be larger in size than the sub-pixel SP of each first pixel PX1. Furthermore, each of the first part pixels PSP1 and the second part pixels PSP2 can be larger in size than each of the third part pixels PSP3 and the fourth part pixels PSP4.

[0183] Each sub-pixel SP of each second pixel PX2 can be divided into smaller, individually luminous sizes. Because the sub-pixel SP of each second pixel PX2 is larger in size than the sub-pixel SP of each first pixel PX1, the driving circuitry for driving each sub-pixel SP of each first pixel PX1 is relatively complex. The partial pixel PSPs included in each sub-pixel SP of each second pixel PX2 can be driven individually because their driving circuitry is simpler. For example, each partial pixel PSP can be driven solely by a driving transistor, without the need for a switching transistor and / or a sensing transistor. The driving transistor can emit light in response to an on / off signal transmitted through the scan line to the gate electrode of the driving transistor and a driving current supplied through the power line to the light-emitting diode.

[0184] The operation of the splicing display device TD according to the embodiment when the display device is normally aligned, and the operation for compensating for misalignment when the display device is misaligned will now be described.

[0185] Figure 10 yes Figure 7 A schematic enlarged view of region A. Figure 10 The diagram shows the first display device PA1 and the third display device PA3 properly aligned in the first direction (X-axis direction). Furthermore, in the following embodiments, the case where pixel PX emits white light will be described as an example.

[0186] Reference Figure 10 The first display device PA1 and the third display device PA3 can be aligned in the first direction (X-axis direction). The first display device PA1 and the third display device PA3 can be properly aligned. Here, "properly aligned" means that the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the third display device PA3 are not misaligned in the first direction (X-axis direction) within the boundary region BA. For example, the edge of each second pixel PX2 of the first display device PA1 and the edge of each second pixel PX2 of the third display device PA3 can coincide with any imaginary line PL extending in the second direction (Y-axis direction).

[0187] When the first display device PA1 and the third display device PA3 are aligned in the first direction (X-axis direction), at least a portion of each of the second pixels PX2 of the first display device PA1 and the third display device PA3 can emit light.

[0188] For example, as described above, the second pixel PX2 of the first display device PA1 and the third display device PA3 can have an area larger than that of the first pixel PX1. When all the sub-pixels PSP of each sub-pixel SP in the second pixel PX2 of the first display device PA1 and the third display device PA3 and the first pixel PX1 emit light, a brightness difference will occur between them because the emission area of ​​each second pixel PX2 is larger than that of the first pixel PX1.

[0189] In an embodiment, in each of the sub-pixels SP of the second pixel PX2 of the first display device PA1 and the third display device PA3, the first portion of the pixel PSP1 and the second portion of the pixel PSP2 can emit light, while the third portion of the pixel PSP3 and the fourth portion of the pixel PSP4 can not emit light. In the accompanying drawings, the non-emitting pixels are marked as "OFF".

[0190] The area of ​​each of the first portion pixels PSP1 and the second portion pixels PSP2 of the first sub-pixel SP1 of each second pixel PX2 can be smaller than the area of ​​the first sub-pixel SP1 of each first pixel PX1. Due to the gap between the first portion pixels PSP1 and the second portion pixels PSP2 of each second pixel PX2, the sum of the areas of the first portion pixels PSP1 and the second portion pixels PSP2 of each second pixel PX2 will be smaller than the area of ​​the first sub-pixel SP1 of each first pixel PX1. However, the sum of the areas of the first portion pixels PSP1 and the second portion pixels PSP2 of each second pixel PX2 can be close to the area of ​​the first sub-pixel SP1 of each first pixel PX1. Therefore, the emission area of ​​the first sub-pixel SP1 of each first pixel PX1 can be close to the total emission area of ​​the first portion pixels PSP1 and the second portion pixels PSP2 of the first sub-pixel SP1 of each second pixel PX2. Therefore, this can significantly reduce the brightness difference between the first pixel PX1 and the second pixel PX2 in the boundary region BA between the first display device PA1 and the third display device PA3, thus enabling the splicing display device TD to be recognized by the user as a single complete splicing display device TD.

[0191] Figure 11 yes Figure 7 A schematic enlarged view of an example of region A. Figure 12 yes Figure 7 A schematic enlarged view of another example of region A. Figure 11 This illustrates a situation where the first display device PA1 and the third display device PA3 are not aligned (e.g., misaligned) in the first direction (X-axis direction). Figure 12This illustrates a situation where the first display device PA1 and the third display device PA3 are misaligned (e.g., offset from each other) in a direction opposite to the first direction (X-axis direction). In other words, pixels PX of the first display device PA1 and pixels PX of the third display device PA3 are not aligned with each other along the Y-axis direction.

[0192] Reference Figure 11 The first display device PA1 and the third display device PA3 may be misaligned in the first direction (X-axis direction). Here, "misalignment" means that the second pixel PX2 of the third display device PA3 moves relative to the second pixel PX2 of the first display device PA1 in the first direction (X-axis direction) or in a direction opposite to the first direction (X-axis direction) within the boundary region BA. For example, the edges of each second pixel PX2 of the first display device PA1 and each second pixel PX2 of the third display device PA3 may be misaligned, or may not coincide with any imaginary line PL extending in the second direction (Y-axis direction).

[0193] When the first display device PA1 and the third display device PA3 are not aligned in the first direction (X-axis direction), at least a portion of each of the second pixels PX2 of the first display device PA1 and the third display device PA3 can emit light.

[0194] In an embodiment, the second portion pixel PSP2 of the first sub-pixel SP1 of each second pixel PX2 of the first display device PA1 can emit light, while the first portion pixel PSP1, the third portion pixel PSP3, and the fourth portion pixel PSP4 can remain non-emitting light. Furthermore, in each of the second sub-pixels SP2 and third sub-pixels SP3 of each second pixel PX2 of the first display device PA1, the first portion pixel PSP1 and the second portion pixel PSP2 can emit light, while the third portion pixel PSP3 and the fourth portion pixel PSP4 can remain non-emitting light.

[0195] Because the third display device PA3 is not aligned with the first display device PA1 in the first direction (X-axis direction), the first pixel PX1 and the second pixel PX2 of the third display device PA3 will also be misaligned with the first pixel PX1 and the second pixel PX2 of the first display device PA1 in the first direction (X-axis direction). In this case, the user will perceive the boundary region BA between the first display device PA1 and the third display device PA3 as curved.

[0196] In an embodiment, in the first sub-pixel SP1 of each second pixel PX2 in the first display device PA1, the second portion pixel PSP2 can emit light, while the first portion pixel PSP1, the third portion pixel PSP3, and the fourth portion pixel PSP4 can remain non-emitting. In this case, the emitting area of ​​each second pixel PX2 can be smaller than the emitting area of ​​each first pixel PX1 due to the first portion pixel PSP1, thus allowing the emitting area of ​​each second pixel PX2 to move along the first direction (X-axis direction) relative to the first portion pixel PSP1. That is, when the first pixel PX1 and the second pixel PX2 emit light in the first display device PA1, the emitting area of ​​each second pixel PX2 can move slightly along the first direction (X-axis direction).

[0197] Furthermore, in each of the first sub-pixels SP1 and SP2 of each second pixel PX2 in the third display device PA3, the first sub-pixel PSP1 and the second sub-pixel PSP2 can emit light, while the third sub-pixel PSP3 and the fourth sub-pixel PSP4 can remain non-emitting light. In the third sub-pixel SP3 of each second pixel PX2 in the third display device PA3, the first sub-pixel PSP1 can emit light, while the second sub-pixel PSP2, the third sub-pixel PSP3, and the fourth sub-pixel PSP4 can remain non-emitting light.

[0198] In this embodiment, in the third sub-pixel SP3 of each second pixel PX2 in the third display device PA3, the first sub-pixel PSP1 can emit light, while the second sub-pixels PSP2, PSP3, and PSP4 can remain non-emitting. In this case, the emitting area of ​​each second pixel PX2 can be smaller than the emitting area of ​​each first pixel PX1 due to the second sub-pixel PSP2, thus allowing the emitting area of ​​each second pixel PX2 to move in a direction opposite to the first direction (X-axis direction). That is, when the first pixel PX1 and the second pixel PX2 emit light in the third display device PA3, the emitting area of ​​each second pixel PX2 can move slightly in a direction opposite to the first direction (X-axis direction).

[0199] Therefore, in the boundary region BA, the emission area of ​​each second pixel PX2 of the first display device PA1 can be slightly moved in the first direction (X-axis direction), and the emission area of ​​each second pixel PX2 of the third display device PA3 can be slightly moved in the opposite direction to the first direction (X-axis direction). Thus, when the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the third display device PA3 emit white light, the problem of misalignment in the boundary region BA being recognized by the user can be improved.

[0200] Reference Figure 12 In another example, the first display device PA1 and the third display device PA3 may be misaligned in a direction opposite to the first direction (X-axis direction). When the first display device PA1 and the third display device PA3 are misaligned in a direction opposite to the first direction (X-axis direction), at least a portion of each of the second pixels PX2 of the first display device PA1 and the third display device PA3 may emit light.

[0201] In an embodiment, the first portion of the third sub-pixel SP3 of each second pixel PX2 of the first display device PA1 can emit light, while the second portion of the pixel PSP2, the third portion of the pixel PSP3, and the fourth portion of the pixel PSP4 can remain non-emitting light. Furthermore, in each of the first sub-pixels SP1 and the second sub-pixels SP2 of each second pixel PX2 of the first display device PA1, the first portion of the pixel PSP1 and the second portion of the pixel PSP2 can emit light, while the third portion of the pixel PSP3 and the fourth portion of the pixel PSP4 can remain non-emitting light.

[0202] Because the third display device PA3 is misaligned with the first display device PA1 in the direction opposite to the first direction (X-axis direction), the first pixel PX1 and the second pixel PX2 of the third display device PA3 will also be misaligned with the first pixel PX1 and the second pixel PX2 of the first display device PA1 in the direction opposite to the first direction (X-axis direction). In this case, the user will perceive the boundary region BA between the first display device PA1 and the third display device PA3 as curved.

[0203] In an embodiment, in the third sub-pixel SP3 of each second pixel PX2 of the first display device PA1, the first portion of the pixel PSP1 can emit light, while the second portion of the pixel PSP2, the third portion of the pixel PSP3, and the fourth portion of the pixel PSP4 can not emit light. In this case, the emitting area of ​​each second pixel PX2 can be smaller than the emitting area of ​​each first pixel PX1 of the first display device PA1 due to the second portion of the pixel PSP2. Therefore, the emitting area of ​​each second pixel PX2 can be moved in a direction opposite to the first direction (X-axis direction). That is, when the first pixel PX1 and the second pixel PX2 in the first display device PA1 emit light, the emitting area of ​​each second pixel PX2 can be slightly moved in a direction opposite to the first direction (X-axis direction).

[0204] Furthermore, in each of the second pixels PX2 of the third display device PA3, the second sub-pixel PSP2 can emit light, while the first sub-pixel PSP1, the third sub-pixel PSP3, and the fourth sub-pixel PSP4 can remain non-emitting light. In each of the second sub-pixel SP2 and the third sub-pixel SP3, the first sub-pixel PSP1 and the second sub-pixel PSP2 can emit light, while the third sub-pixel PSP3 and the fourth sub-pixel PSP4 can remain non-emitting light.

[0205] In this embodiment, in the first sub-pixel SP1 of each second pixel PX2 of the third display device PA3, the second portion pixel PSP2 can emit light, while the first portion pixel PSP1, the third portion pixel PSP3, and the fourth portion pixel PSP4 can remain non-emitting. In this case, the emitting area of ​​each second pixel PX2 can be smaller than the emitting area of ​​each first pixel PX1 of the third display device PA3 due to the first portion pixel PSP1. Therefore, the emitting area of ​​each second pixel PX2 can move the first portion pixel PSP1 in the first direction (X-axis direction). That is, when the first pixel PX1 and the second pixel PX2 emit light in the third display device PA3, the emitting area of ​​each second pixel PX2 can move slightly in the first direction (X-axis direction).

[0206] Therefore, in the boundary region BA, the emission area of ​​each second pixel PX2 of the first display device PA1 can be slightly moved in the direction opposite to the first direction (X-axis direction), and the emission area of ​​each second pixel PX2 of the third display device PA3 can be slightly moved in the first direction (X-axis direction). Thus, when the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the third display device PA3 emit white light, the problem of misalignment in the boundary region BA being recognized by the user can be improved.

[0207] Figure 13 yes Figure 7 A schematic enlarged view of region B. Figure 13 This shows the case where the first display device PA1 and the second display device PA2 are properly aligned in the second direction (Y-axis direction).

[0208] Reference Figure 13The first display device PA1 and the second display device PA2 can be aligned in a second direction (Y-axis direction). In the boundary region BA between the first display device PA1 and the second display device PA2, the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the second display device PA2 can be aligned in the second direction (Y-axis direction) without distortion. For example, the edge of each second pixel PX2 of the first display device PA1 and the edge of each second pixel PX2 of the second display device PA2 can coincide with any imaginary line PL extending in the first direction (X-axis direction).

[0209] When the first display device PA1 and the second display device PA2 are aligned in the second direction (Y-axis direction), at least a portion of each of the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the second display device PA2 can emit light.

[0210] For example, as described above, the second pixel PX2 of the first display device PA1 and the second display device PA2 can have an area larger than that of the first pixel PX1. When all the sub-pixels PSP of each sub-pixel SP in the second pixel PX2 of the first display device PA1 and the second display device PA2 and the first pixel PX1 emit light, a brightness difference will occur between them because the emitting area of ​​each second pixel PX2 is larger than the emitting area of ​​each of the first pixels PX1.

[0211] In an embodiment, in each of the sub-pixels SP of the second pixel PX2 of the first display device PA1 and the second display device PA2, the first part pixel PSP1 and the second part pixel PSP2 can emit light, and the third part pixel PSP3 and the fourth part pixel PSP4 can not emit light.

[0212] The area of ​​each of the first portion pixels PSP1 and the second portion pixels PSP2 of the first sub-pixel SP1 of each second pixel PX2 can be smaller than the area of ​​the first sub-pixel SP1 of each first pixel PX1. Due to the gap between the first portion pixels PSP1 and the second portion pixels PSP2 of each second pixel PX2, the sum of the areas of the first portion pixels PSP1 and the second portion pixels PSP2 of each second pixel PX2 will be smaller than the area of ​​the first sub-pixel SP1 of each first pixel PX1. However, the sum of the areas of the first portion pixels PSP1 and the second portion pixels PSP2 of each second pixel PX2 can be close to the area of ​​the first sub-pixel SP1 of each first pixel PX1. Therefore, the emission area of ​​the first sub-pixel SP1 of each first pixel PX1 can be close to the total emission area of ​​the first portion pixels PSP1 and the second portion pixels PSP2 of the first sub-pixel SP1 of each second pixel PX2. Therefore, this can reduce the brightness difference between the first pixel PX1 and the second pixel PX2 in the boundary region BA between the first display device PA1 and the second display device PA2, thus enabling the splicing display device TD to be recognized by the user as a single complete splicing display device TD.

[0213] Figure 14 yes Figure 7 A schematic enlarged view of an example of region B. Figure 15 yes Figure 7 A schematic enlarged view of another example of region B. Figure 14 This illustrates a situation where the second display device PA2 is misaligned (e.g., misaligned) with the first display device PA1 in a direction opposite to the second direction (Y-axis direction). Figure 15 This illustrates a situation where the second display device PA2 is not aligned with the first display device PA1 in the second direction (Y-axis direction). In other words, the pixels PX of the first display device PA1 and the pixels PX of the second display device PA2 are not aligned with each other along the X-axis direction.

[0214] Reference Figure 14 The second display device PA2 may be misaligned with the first display device PA1 in a direction opposite to the second direction (Y-axis direction). Here, "misalignment" means that the second pixel PX2 of the second display device PA2 moves relative to the second pixel PX2 of the first display device PA1 in the second direction (Y-axis direction) or in a direction opposite to the second direction (Y-axis direction) within the boundary region BA. For example, the edge of each second pixel PX2 of the first display device PA1 and the edge of each second pixel PX2 of the second display device PA2 may not coincide with any imaginary line PL extending in the first direction (X-axis direction).

[0215] When the second display device PA2 is not aligned with the first display device PA1 in a direction opposite to the second direction (Y-axis direction), at least a portion of each of the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the second display device PA2 can emit light.

[0216] In an embodiment, the first part pixel PSP1, the second part pixel PSP2, and the fourth part pixel PSP4 of each of the first sub-pixels SP1, SP2, and SP3 of each second pixel PX2 of the first display device PA1 can emit light, and the third part pixel PSP3 can not emit light.

[0217] Because the second display device PA2 is misaligned with the first display device PA1 in the direction opposite to the second direction (Y-axis direction), the first pixel PX1 and the second pixel PX2 of the second display device PA2 will also be misaligned with the first pixel PX1 and the second pixel PX2 of the first display device PA1 in the direction opposite to the second direction (Y-axis direction). In this case, the user will perceive the boundary region BA between the first display device PA1 and the second display device PA2 as curved.

[0218] In an embodiment, in each second pixel PX2 of the first display device PA1, in the first sub-pixels SP1, SP2, and SP3, the first portion pixel PSP1, the second portion pixel PSP2, and the fourth portion pixel PSP4 can emit light, while the third portion pixel PSP3 can remain non-emitting. In this case, in the first display device PA1, the emitting area of ​​each second pixel PX2 can be larger than the emitting area of ​​each first pixel PX1 due to the fourth portion pixel PSP4. Therefore, the emitting area of ​​each second pixel PX2 can move the fourth portion pixel PSP4 in a direction opposite to the second direction (Y-axis direction). That is, when the first pixel PX1 and the second pixel PX2 emit light in the first display device PA1, the emitting area of ​​each second pixel PX2 can move slightly in a direction opposite to the second direction (Y-axis direction).

[0219] Furthermore, in each of the first sub-pixels SP1, SP2, and SP3 of each second pixel PX2 in the second display device PA2, the first sub-pixel PSP1, the second sub-pixel PSP2, and the third sub-pixel PSP3 can emit light, and the fourth sub-pixel PSP4 can not emit light.

[0220] In an embodiment, in each of the first sub-pixels SP1, SP2, and SP3 of each second pixel PX2 in the second display device PA2, the first portion pixel PSP1, the second portion pixel PSP2, and the third portion pixel PSP3 can emit light, while the fourth portion pixel PSP4 can remain non-emitting. In this case, the emitting area of ​​each second pixel PX2 in the second display device PA2 can be larger than the emitting area of ​​each first pixel PX1 due to the third portion pixel PSP3. Therefore, the emitting area of ​​each second pixel PX2 can be moved in the second direction (Y-axis direction) by the third portion pixel PSP3. That is, when the first pixel PX1 and the second pixel PX2 emit light in the second display device PA2, the emitting area of ​​each second pixel PX2 can be slightly moved in the second direction (Y-axis direction).

[0221] Therefore, in the boundary region BA, the emission area of ​​each second pixel PX2 of the first display device PA1 can be slightly moved in the direction opposite to the second direction (Y-axis direction), and the emission area of ​​each second pixel PX2 of the second display device PA2 can be slightly moved in the second direction (Y-axis direction). Therefore, when the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the second display device PA2 emit white light, the problem of misalignment in the boundary region BA being recognized by the user can be improved.

[0222] Reference Figure 15 In another example, the second display device PA2 may be misaligned with the first display device PA1 in the second direction (Y-axis direction). When the second display device PA2 is misaligned with the first display device PA1 in the second direction (Y-axis direction), at least a portion of each of the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the second display device PA2 can emit light.

[0223] In an embodiment, the first part pixel PSP1, the second part pixel PSP2, and the third part pixel PSP3 of each of the first sub-pixels SP1, SP2, and SP3 of each second pixel PX2 of the first display device PA1 can emit light, and the fourth part pixel PSP4 can not emit light.

[0224] Because the second display device PA2 is not aligned with the first display device PA1 in the second direction (Y-axis direction), the first pixel PX1 and the second pixel PX2 of the second display device PA2 will also be misaligned with the first pixel PX1 and the second pixel PX2 of the first display device PA1 in the second direction (Y-axis direction). In this case, the user will perceive the boundary region BA between the first display device PA1 and the second display device PA2 as curved.

[0225] In an embodiment, in each of the first sub-pixels SP1, SP2, and SP3 of each second pixel PX2 in the first display device PA1, the first portion pixel PSP1, the second portion pixel PSP2, and the third portion pixel PSP3 can emit light, while the fourth portion pixel PSP4 can remain non-emitting. In this case, the emitting area of ​​each second pixel PX2 in the first display device PA1 can be larger than the emitting area of ​​each first pixel PX1 due to the third portion pixel PSP3. Therefore, the emitting area of ​​each second pixel PX2 can be moved in the second direction (Y-axis direction) by the third portion pixel PSP3. That is, when the first pixel PX1 and the second pixel PX2 in the first display device PA1 emit light, the emitting area of ​​each second pixel PX2 can be slightly moved in the second direction (Y-axis direction).

[0226] Furthermore, in each of the first sub-pixels SP1, SP2, and SP3 of each second pixel PX2 in the second display device PA2, the first sub-pixel PSP1, the second sub-pixel PSP2, and the fourth sub-pixel PSP4 can emit light, while the third sub-pixel PSP3 can not emit light.

[0227] In an embodiment, in each of the first sub-pixels SP1, SP2, and SP3 of each second pixel PX2 in the second display device PA2, the first portion pixel PSP1, the second portion pixel PSP2, and the fourth portion pixel PSP4 can emit light, while the third portion pixel PSP3 can remain non-emitting. In this case, the emitting area of ​​each second pixel PX2 in the second display device PA2 can be larger than the emitting area of ​​each first pixel PX1 due to the fourth portion pixel PSP4. Therefore, the emitting area of ​​each second pixel PX2 can move the fourth portion pixel PSP4 in a direction opposite to the second direction (Y-axis direction). That is, when the first pixel PX1 and the second pixel PX2 emit light in the second display device PA2, the emitting area of ​​each second pixel PX2 can move slightly in a direction opposite to the second direction (Y-axis direction).

[0228] Therefore, in the boundary region BA, the emission area of ​​each second pixel PX2 of the first display device PA1 can be slightly moved in the second direction (Y-axis direction), and the emission area of ​​each second pixel PX2 of the second display device PA2 can be slightly moved in the opposite direction to the second direction (Y-axis direction). Thus, when the second pixels PX2 of the first display device PA1 and the second pixels PX2 of the second display device PA2 emit white light, the problem of misalignment in the boundary region BA being recognized by the user can be improved.

[0229] Figure 16 yes Figure 7 A schematic plan view of another embodiment of region A. Figure 17 yes Figure 7 A schematic plan view of another embodiment of region B. Figure 16 and Figure 17 This diagram illustrates a method for preventing misalignment of the display device from being seen when a single sub-pixel SP emits light in a monochrome manner.

[0230] Reference Figure 16 Unlike the previous embodiment in which the aforementioned pixel PX emits white light, the operation of the sub-pixel SP in each pixel PX emitting monochromatic light emitting green light will be described below as an example.

[0231] Reference Figure 16 The first display device PA1 and the third display device PA3 may be misaligned (e.g., misaligned) in a first direction (X-axis direction). In other words, pixels PX of the first display device PA1 and pixels PX of the third display device PA3 are misaligned along the Y-axis direction. When the first display device PA1 and the third display device PA3 are misaligned in the first direction (X-axis direction), at least a portion of each of the second pixels PX2 of the first display device PA1 and the third display device PA3 can emit light. The following example describes the case where the second sub-pixel SP2 of each pixel PX emits green light, the first sub-pixel SP1 emits red light, and the third sub-pixel SP3 emits blue light.

[0232] In this embodiment, the second sub-pixel SP2 of each of the first pixels PX1 of the first display device PA1 and the third display device PA3 can emit light, while the other first sub-pixels SP1 and third sub-pixels SP3 can remain non-emitting light, thereby achieving a green color. Furthermore, in the boundary region BA, all portions of the first sub-pixels SP1 and third sub-pixels SP3 of each second pixel PX2 of the first display device PA1 can remain non-emitting light, while the second portion of the second sub-pixel SP2, PSP2, emits light, and the first portion of the second sub-pixel SP2, the third portion of the second sub-pixel SP2, and the fourth portion of the second sub-pixel SP2, PSP1, PSP3, and PSP4, do not emit light.

[0233] Because the third display device PA3 is not aligned with the first display device PA1 in the first direction (X-axis direction), the first pixel PX1 and the second pixel PX2 of the third display device PA3 will also be misaligned with the first pixel PX1 and the second pixel PX2 of the first display device PA1 in the first direction (X-axis direction). In this case, the user will perceive the boundary region BA between the first display device PA1 and the third display device PA3 as curved.

[0234] In an embodiment, in each second sub-pixel SP2 of a second pixel PX2 in the first display device PA1, the second portion of the pixel PSP2 can emit light, while the first portion of the pixel PSP1, the third portion of the pixel PSP3, and the fourth portion of the pixel PSP4 can remain non-emitting light. In this case, in the first display device PA1, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can be smaller than the emitting area of ​​the second sub-pixel SP2 of each first pixel PX1 due to the first portion of the pixel PSP1. Therefore, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can move the first portion of the pixel PSP1 in the first direction (X-axis direction). That is, when the second sub-pixel SP2 of each first pixel PX1 and the second sub-pixel SP2 of each second pixel PX2 emit green light in the first display device PA1, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can move slightly in the first direction (X-axis direction).

[0235] Furthermore, in the third display device PA3, all parts of the first sub-pixel SP1 and the third sub-pixel SP3 of each second pixel PX2 may not emit light, while the first part of the second sub-pixel SP2, PSP1 emits light, and the second part of the second sub-pixel SP2, the third part of the second sub-pixel SP3 and the fourth part of the second sub-pixel SP2 do not emit light.

[0236] In this embodiment, in the second sub-pixel SP2 of each second pixel PX2 in the third display device PA3, the first sub-pixel PSP1 can emit light, while the second sub-pixels PSP2, the third sub-pixels PSP3, and the fourth sub-pixels PSP4 can remain non-emitting light. In this case, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 in the third display device PA3 can be smaller than the emitting area of ​​the second sub-pixel SP2 of each first pixel PX1 due to the second sub-pixel PSP2. Therefore, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can move in a direction opposite to the first direction (X-axis direction). That is, when the second sub-pixel SP2 of each first pixel PX1 and the second sub-pixel SP2 of each second pixel PX2 emit green light in the third display device PA3, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can move slightly in a direction opposite to the first direction (X-axis direction).

[0237] Therefore, in the boundary region BA, the emission area of ​​the second sub-pixel SP2 of each second pixel PX2 of the first display device PA1 can be slightly moved in the first direction (X-axis direction), and the emission area of ​​the second sub-pixel SP2 of each second pixel PX2 of the third display device PA3 can be slightly moved in the opposite direction to the first direction (X-axis direction). Therefore, when the second sub-pixel SP2 of each second pixel PX2 of the first display device PA1 and the second sub-pixel SP2 of each second pixel PX2 of the third display device PA3 emits green light, the problem of misalignment in the boundary region BA being recognized by the user can be improved.

[0238] Reference Figure 17 In another example, the first display device PA1 and the second display device PA2 may be misaligned in the second direction (Y-axis direction). In other words, pixels PX of the first display device PA1 and pixels PX of the second display device PA2 are not aligned with each other along the X-axis direction. When the first display device PA1 and the second display device PA2 are misaligned in the second direction (Y-axis direction), at least a portion of each of the second sub-pixels SP2 of each second pixel PX2 of the first display device PA1 and the second sub-pixels SP2 of each second pixel PX2 of the second display device PA2 can emit light.

[0239] In this embodiment, the second sub-pixel SP2 of each first pixel PX1 of the first display device PA1 can emit green light, and the first sub-pixel SP1 and the third sub-pixel SP3 can remain non-emitting light. Furthermore, the first sub-pixel SP1 and the third sub-pixel SP3 of each second pixel PX2 of the first display device PA1 can remain non-emitting light, while the first portion of the second sub-pixel SP2 (PSP1), the second portion of the second sub-pixel SP2 (PSP2), and the fourth portion of the second sub-pixel SP2 (PSP4) emit light, and the third portion of the second sub-pixel SP3 does not emit light.

[0240] Because the second display device PA2 is misaligned with the first display device PA1 in a direction opposite to the second direction (Y-axis direction), the second sub-pixel SP2 of each first pixel PX1 and the second sub-pixel SP2 of each second pixel PX2 of the second display device PA2 will also be misaligned with the second sub-pixel SP2 of each first pixel PX1 and the second sub-pixel SP2 of each second pixel PX2 of the first display device PA1 in a direction opposite to the second direction (Y-axis direction). In this case, the user will perceive the boundary region BA between the first display device PA1 and the second display device PA2 as curved.

[0241] In this embodiment, within the boundary region BA, all portions of the first sub-pixels SP1 and SP3 of each second pixel PX2 in the first display device PA1 may not emit light, while the first portions of the first sub-pixels SP1, SP2, and SP4 of the second sub-pixel SP2 emit light, and the third portion of the second sub-pixel SP3 does not emit light. In this case, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 in the first display device PA1 may be larger than the emitting area of ​​the second sub-pixel SP2 of each first pixel PX1 due to the fourth portion of the pixel PSP4. Therefore, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can move the fourth portion of the pixel PSP4 in a direction opposite to the second direction (Y-axis direction). That is, when the second sub-pixels SP2 of each first pixel PX1 and SP2 of each second pixel PX2 emit light in the first display device PA1, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can move slightly in a direction opposite to the second direction (Y-axis direction).

[0242] Furthermore, all parts of the first sub-pixel SP1 and the third sub-pixel SP3 of each second pixel PX2 of the second display device PA2 may not emit light, while the first part of the second sub-pixel SP2, the second part of the second sub-pixel SP2, the third part of the second sub-pixel SP2 emit light, and the fourth part of the second sub-pixel SP2, the PSP4, does not emit light.

[0243] In an embodiment, in the second sub-pixel SP2 of each second pixel PX2 in the second display device PA2, the first portion of pixels PSP1, the second portion of pixels PSP2, and the third portion of pixels PSP3 can emit light, while the fourth portion of pixels PSP4 can remain non-emitting. In this case, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 in the second display device PA2 can be larger than the emitting area of ​​the second sub-pixel SP2 of each first pixel PX1 due to the third portion of pixels PSP3. Therefore, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can be moved in the second direction (Y-axis direction) by the third portion of pixels PSP3. That is, when the second sub-pixel SP2 of each first pixel PX1 and the second sub-pixel SP2 of each second pixel PX2 in the second display device PA2 emit light, the emitting area of ​​the second sub-pixel SP2 of each second pixel PX2 can be slightly moved in the second direction (Y-axis direction).

[0244] Therefore, in the boundary region BA, the emission area of ​​the second sub-pixel SP2 of each second pixel PX2 of the first display device PA1 can be slightly moved in the direction opposite to the second direction (Y-axis direction), and the emission area of ​​the second sub-pixel SP2 of each second pixel PX2 of the second display device PA2 can be slightly moved in the second direction (Y-axis direction). Therefore, when the second sub-pixel SP2 of each second pixel PX2 of the first display device PA1 and the second sub-pixel SP2 of each second pixel PX2 of the second display device PA2 emits green light, the problem of misalignment in the boundary region BA being recognized by the user can be improved.

[0245] Despite Figure 16 and Figure 17 The embodiment describes the operation of the second sub-pixel SP2 that emits green light, but the operation of the first sub-pixel SP1 that emits red light and the operation of the third sub-pixel SP3 that emits blue light can also be the same as the operation of the second sub-pixel SP2. Furthermore, when the first display device PA1 is correctly aligned with the third display device PA3 and the second display device PA2, the third portion pixel PSP3 and the fourth portion pixel PSP4 of each sub-pixel SP may not emit light, while the first portion pixel PSP1 and the second portion pixel PSP2 may emit light.

[0246] Figure 18 This is a schematic plan view illustrating the situation where each pixel of the splicing display device according to the comparative example emits white light. Figure 19 This is a schematic plan view illustrating the case where each pixel of the splicing display device according to an embodiment emits white light.

[0247] Reference Figure 18 and Figure 19 In each of the splicing display devices according to the comparative example and embodiment, the third display device PA3 moves in a first direction (X-axis direction) compared to the first display device PA1, and therefore is not aligned with the first display device PA1 in a second direction (Y-axis direction). In other words, the pixels PX of the first display device PA1 and the pixels PX of the third display device PA3 are not aligned with each other along the Y-axis direction. In the comparative example, each second pixel PX2 set in the boundary region BA is not divided into multiple sub-pixels. In the embodiment, it is shown that when the above... Figure 11 The emission region when white light is emitted in the structure.

[0248] like Figure 18 As shown, the pixel PX of each of the first display device PA1 and the third display device PA3 can be seen to be curved at the boundary between the first display device PA1 and the third display device PA3. On the other hand, referring to... Figure 19In the boundary region BA, a portion of the second pixel PX2 of the PSP can compensate for the curvature of the emission region, thereby reducing the degree to which the curvature of the emission region is visible.

[0249] As described above, in the splicing display device according to the embodiment, each sub-pixel of each second pixel disposed in the boundary region adjacent to multiple display devices is divided into multiple partial pixels, and emits light differently depending on whether the display devices are aligned. Therefore, the problem of the boundary region being visible can be improved, thereby enabling a splicing display device with excellent seamlessness.

[0250] In the splicing display device according to the embodiment, in the boundary area between multiple adjacent display devices, the sub-pixels of each pixel are divided into multiple partial pixels, and the emission varies depending on whether the display devices are aligned. Therefore, the problem of the boundary area being visible can be improved, thereby enabling a splicing display device with excellent seamlessness.

[0251] In summarizing the detailed description, those skilled in the art will understand that many variations and modifications can be made to the described 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. The scope of this disclosure may be defined by the claims and their equivalents.

Claims

1. A splicing display device, the splicing display device comprising: Multiple display devices are arranged adjacent to each other, each of the multiple display devices including multiple first pixels and multiple second pixels; as well as The boundary region and the main region excluding the boundary region, wherein in the boundary region, at least one edge of each of the plurality of display devices is adjacent to an edge of another display device. Wherein, the plurality of first pixels are in the main region, the plurality of second pixels are in the boundary region, each of the plurality of first pixels and the plurality of second pixels includes a plurality of sub-pixels containing a first sub-pixel, and each of the plurality of sub-pixels of the plurality of second pixels includes a plurality of partial pixels that emit light of the same color and are adjacent to each other. The plurality of partial pixels include a first partial pixel and a second partial pixel that are adjacent in the short axis direction of the first sub-pixel, and also include a third partial pixel and a fourth partial pixel, wherein the third partial pixel is located on one side of the first partial pixel in the long axis direction of the first sub-pixel, and the fourth partial pixel is located on the other side of the first partial pixel in the long axis direction of the first sub-pixel.

2. The splicing display device according to claim 1, wherein, The plurality of sub-pixels in each of the plurality of first pixels and the plurality of second pixels include first sub-pixels, second sub-pixels, and third sub-pixels that emit light of different colors and are adjacent to each other.

3. The splicing display device according to claim 1, wherein, The length of each long side of each of the first and second part pixels is equal to the length of each long side of each sub-pixel of the first pixel.

4. The splicing display device according to claim 1, wherein, The distance from the first side of the first portion of pixels to the second side of the second portion of pixels along the minor axis of the first sub-pixel is equal to the length of each minor side of each sub-pixel of the first pixel.

5. The splicing display device according to claim 1, wherein, The third and fourth pixel portions are spaced apart from each other, and the first and second pixel portions are positioned between the third and fourth pixel portions.

6. The splicing display device according to claim 1, wherein, The direction along which the long side of each of the third and fourth pixel portions extends is parallel to the direction along which the short side of the first pixel portion extends.

7. The splicing display device according to claim 1, wherein, The lengths of the long sides of the third and fourth part pixels are equal to each other and equal to the length of the short side of each sub-pixel of each first pixel.

8. The splicing display device according to claim 1, wherein, The length of each long side of each of the third and fourth sub-pixels is equal to the distance from the first side of the first sub-pixel to the second side of the second sub-pixel along the minor axis of the first sub-pixel.

9. The splicing display device according to claim 1, wherein, The first and second pixel portions have the same size, and the third and fourth pixel portions have the same size. The size of each of the first and second part pixels is larger than the size of each of the third and fourth part pixels.

Images