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EP-4138536-B1 - TILED DISPLAY DEVICE

EP4138536B1EP 4138536 B1EP4138536 B1EP 4138536B1EP-4138536-B1

Inventors

  • HUH, JONG MOO
  • JEONG, JIN WOOK
  • PARK, SUN
  • EOM, KI CHANG
  • LEE, GWANG GEUN

Dates

Publication Date
20260506
Application Date
20220817

Claims (16)

  1. A tiled display device (TDD) comprising: a first panel (PNL1) including a first display element layer (DPL1); a second panel (PNL2) including a second display element layer (DPL2); a shared layer (100) including a color conversion part (CCL); wherein the shared layer (100) includes a first portion and a second portion; wherein the first portion overlaps with the first panel (PNL1) in a plan view, wherein the second portion overlaps with the second panel (PNL2) in a plan view, and wherein the color conversion part (CCL) is configured to change a wavelength of light provided from the first panel (PNL1) and the second panel (PNL2), wherein the color conversion part (CCL) comprises: a first color part (1200) providing light of a first color; a second color part (1400) providing light of a second color; and a third color part (1600) providing light of a third color, and the first color part (1200), the second color part (1400), and the third color part (1600) overlap the first panel (PNL1) and the second panel (PNL2) in a plan view; a first sub-pixel area (SPXA1) emitting the light of the first color and overlapping the first color part (1200) in a plan view; a second sub-pixel area (SPXA2) emitting the light of the second color and overlapping the second color part (1400) in a plan view; and a third sub-pixel area (SPXA3) emitting the light of the third color and overlapping the third color part (1600) in a plan view, wherein the first display element layer (DPL1) includes a first light emitting element, and the second display element layer (DPL2) includes a second light emitting element, wherein the tiled display device (TDD) further comprises: an emission area (EMA) in which the first light emitting element and the second light emitting element are disposed, wherein the emission area (EMA) is defined by components included in the first display element layer (DPL1) and the second display element layer (DPL2), optionally wherein each of the first display element layer (DPL1) and the second display element layer (DPL2) include a bank (BNK) protruding in a display direction of the tiled display device (TDD), and the bank (BNNK) has a shape enclosing the emission area (EMA), wherein the emission area (EMA) comprises: a first emission area (EMA1) overlapping the first sub-pixel area (SPXA1) in a plan view; a second emission area (EMA2) overlapping the second sub-pixel area (SPXA2) in a plan view; and a third emission area (EMA3) overlapping third sub-pixel area (SPXA3) in a plan view, and characterized in that the first color part (1200) is disposed to be misaligned from the first emission area (EMA1) in a plan view, the second color part (1400) is disposed to be misaligned from the second emission area (EMA2) in a plan view, and the third color part (1600) is disposed to be misaligned from the third emission area (EMA3) in a plan view.
  2. The tiled display device (TDD) according to claim 1, wherein the first panel (PNL1) and the second panel (PNL2) form a lower panel of the tiled display device (TDD), and the shared layer (100) forms an upper panel of the tiled display device (TDD).
  3. The tiled display device (TDD) according to claim 1 or 2, wherein the first panel (PNL1) and the second panel (PNL2) are disposed on a same layer, the first panel (PNL1) and the second panel (PNL2) are spaced apart from each other, and a bonding area (BA) is disposed between the first panel (PNL1) and the second panel (PNL2).
  4. The tiled display device (TDD) according to claim 3, wherein the bonding area (BA) overlaps the shared layer (100) in a plan view.
  5. The tiled display device (TDD) according to any preceding claim, wherein the shared layer (100) further comprises: a first color filter (CF1) overlapping the first sub-pixel area (SPXA1) in a plan view; a second color filter (CF2) overlapping the second sub-pixel area (SPXA2) in a plan view; and a third color filter (CF3) overlapping the third sub-pixel area (SPXA3) in a plan view.
  6. The tiled display device according to claim 5, each of the first display element layer (DPL1) and the second display element layer (DPL2) include a bank (BNK) protruding in a display direction of the tiled display device (TDD), and the bank (BNK) has a shape enclosing the emission area (EMA).
  7. The tiled display device (TDD) according to any preceding claim, wherein at least part of the first color part (1200) overlaps the first emission area (EMA1) in a plan view, and other part of the first color part (1200) does not overlap the first emission area (EMA1) in a plan view.
  8. The tiled display device (TDD) according to any preceding claim, wherein the first panel (PNL1) and the first portion of the shared layer (100) form a first display device (DD1), the second panel (PNL1) and the second portion of the shared layer (100) form a second display device (DD2), in the first display device (DD1) and the second display device (DD2), the first sub-pixel area (SPXA1), the second sub-pixel area (SPXA2), and the third sub-pixel area (SPXA3) are adjacent to each other and are spaced apart from each other by a first separation distance (220), a first adjacent sub-pixel area (2200) of the first display device (DD1) and a second adjacent sub-pixel area (2400) of the second display device (DD2) are spaced apart from each other by a second separation distance (240), the first adjacent sub-pixel area (2200) is an area closest to the second display device (DD2), among the first sub-pixel area (SPXA1), the second sub-pixel area (SPXA2), and the third sub-pixel area (SPXA3) disposed in the first display device (DD1), the second adjacent sub-pixel area (2400) is an area closest to the first display device (DD1), among the first sub-pixel area (SPXA1), the second sub-pixel area (SPXA2), and the third sub-pixel area (SPXA3) disposed in the second display device (DD2), and the first separation distance (220) is equal to the second separation distance (240). optionally a color provided by the first adjacent sub-pixel area (2200) and a color provided by the second adjacent sub-pixel area (2400) are different from each other.
  9. The tiled display device according to claim 8, wherein in the first display device (DD1) and the second display device (DD2), the first emission area (EMA1), the second emission area (EMA2), and the third emission area (EMA3) are adjacent to each other and are spaced apart from each other by a first emission separation distance (320), a first adjacent emission area (3200) of the first display device (DD1) and a second adjacent emission area (3400) of the second display device (DD2) are spaced apart from each other by a second emission separation distance (340), the first adjacent emission area (3200) is an area closest to the second display device (DD2), among the first emission area (EMA1), the second emission area (EMA2), and the third emission area (EMA3) disposed in the first display device (DD1), the second adjacent emission area (3400) is an area closest to the first display device (DD1), among the first emission area (EMA1), the second emission area (EMA2), and the third emission area (EMA3) disposed in the second display device (DD2), and the first emission separation distance (320) is different from the second emission separation distance (340), optionally the second emission separation distance (340) is greater than the second separation distance (240).
  10. The tiled display device according to claim 9, wherein, when viewed from an outside, the light of the first color is observed in the first sub-pixel area (SPXA1), the light of the second color is observed in the second sub-pixel area (SPXA2), and the light of the third color is observed in the third sub-pixel area (SPXA3).
  11. The tiled display device according to claim 9 or 10, wherein the first panel (PNL1) and the second panel (PNL2) are disposed on a same layer, the first panel (PNL1) and the second panel (PNL2) are spaced apart from each other, a bonding area (BA) is disposed between the first panel (PNL1) and the second panel (PNL2), and a thickness of the bonding area (BA) is smaller than the second separation distance (240).
  12. The tiled display device according to any preceding claim, wherein the first color part (1200) comprises a first quantum dot converting the light of the third color into the light of the first color, and the second color part (1400) comprises a second quantum dot converting the light of the third color into the light of the second color.
  13. The tiled display device according to claim 12, wherein the first display element layer (DPL1) includes a first light emitting element, and the second display element layer (DPL2) includes a second light emitting element, and wherein each of the first light emitting element and second light emitting element emit the light of the third color.
  14. The tiled display device (TDD) according to any one preceding claim, wherein the first display element layer (DPL1) includes a first light emitting element, and the second display element layer (DPL2) includes a second light emitting element, and wherein the first light emitting element and the second light emitting element are an organic light emitting diode or a light emitting diode having a size in a range of a nanoscale to a microscale.
  15. A tiled display device (TDD) comprising: a first panel (PNL1) including a first display element layer (DPL1); a second panel (PNL2) including a second display element layer (DPL2); a shared layer (100) including a color conversion part (CCL); wherein the shared layer (100) includes a first portion and a second portion; wherein the first portion overlaps with the first panel (PNL1) in a plan view, wherein the second portion overlaps with the second panel (PNL2) in a plan view, and wherein the color conversion part (CCL) is configured to change a wavelength of light provided from the first panel (PNL1) and the second panel (PNL2), wherein the color conversion part (CCL) comprises: a first color part (1200) providing light of a first color; a second color part (1400) providing light of a second color; and a third color part (1600) providing light of a third color, and the first color part (1200), the second color part (1400), and the third color part (1600) overlap the first panel (PNL1) and the second panel (PNL2) in a plan view, a first sub-pixel area (SPXA1) emitting the light of the first color and overlapping the first color part (1200) in a plan view; a second sub-pixel area (SPXA2) emitting the light of the second color and overlapping the second color part (1400) in a plan view; and a third sub-pixel area (SPXA3) emitting the light of the third color and overlapping the third color part (1600) in a plan view, wherein the first display element layer (DPL) includes a first light emitting element, and the second display element layer (DPL2) includes a second light emitting element, wherein the tiled display device (TDD) further comprises: an emission area (EMA) in which the first light emitting element and the second light emitting element are disposed, wherein the emission area (EMA) is defined by components included in the first display element layer (DPL1) and the second display element layer (DPL2), optionally wherein each of the first display element layer (DPL1) and the second display element layer (DPL2) include a bank (BNK) protruding in a display direction of the tiled display device (TDD), and the bank (BHK) has a shape enclosing the emission area (EMA), wherein the emission area (EMA) comprises: a first emission area (EMA1) overlapping the first sub-pixel area (SPXA1) in a plan view; a second emission area (EMA2) overlapping the second sub-pixel area (SPXA2) in a plan view; and a third emission area (EMA3) overlapping third sub-pixel area (SPXA3) in a plan view, wherein the first panel (PNL1) and the first portion of the shared layer (100) form a first display device (DD1), the second panel (PNL2) and the second portion of the shared layer (100) form a second display device (DD2), in the first display device (DD1) and the second display device (DD2), the first sub-pixel area (SPXA1), the second sub-pixel area (SPXA2), and the third sub-pixel area (SPXA3) are adjacent to each other and are spaced apart from each other by a first separation distance (220), a first adjacent sub-pixel area (2200) of the first display device (DD1) and a second adjacent sub-pixel area (2400) of the second display device (DD2) are spaced apart from each other by a second separation distance (240), the first adjacent sub-pixel area (2200) is an area closest to the second display device (DD2), among the first sub-pixel area (SPXA1), the second sub-pixel area (SPXA2), and the third sub-pixel area (SPXA3) disposed in the first display device (DD1), the second adjacent sub-pixel area (2400) is an area closest to the first display device (DD1), among the first sub-pixel area (SPXA1), the second sub-pixel area (SPXA2), and the third sub-pixel area (SPXA3) disposed in the second display device (DD2), and the first separation distance (220) is equal to the second separation distance (240). optionally a color provided by the first adjacent sub-pixel area (2200) and a color provided by the second adjacent sub-pixel area (2400) are different from each other, and wherein, in the first display device (DD1) and the second display device (DD2), the first emission area (EMA1), the second emission area (EMA2), and the third emission area (EMA3) are adjacent to each other and are spaced apart from each other by a first emission separation distance (320), a first adjacent emission area (320) of the first display device (DD1) and a second adjacent emission area (3400) of the second display device (DD2) are spaced apart from each other by a second emission separation distance (340), the first adjacent emission area (3200) is an area closest to the second display device (DD2), among the first emission area (EMA1), the second emission area (EMA2), and the third emission area (EMA3) disposed in the first display device (DD1), the second adjacent emission area (3400) is an area closest to the first display device (DD1), among the first emission area (EMA1), the second emission area (EMA2), and the third emission area (EMA3) disposed in the second display device (DD2), and the first emission separation distance (320) is different from the second emission separation distance (340).
  16. The tiled display device according to claim 15, wherein the second emission separation distance (340) is greater than the second separation distance (240).

Description

1. Technical Field Various embodiments of the disclosure relate to a tiled display device. 2. Description of the Related Art Recently, as interest in information display is increasing, research and development of display devices are continuously made. EP 3 786 693 A1 discloses a display device characterized by comprising: a first unit, the first unit comprises: a first substrate; and a light blocking structure having a plurality of first openings and disposed on the first substrate; and a plurality of second units, each comprises: a second substrate; and a plurality of light emitting diodes disposed on the second substrate and corresponding to a portion of the plurality of first openings. EP 1 244 146 A2 discloses a method of making a tiled emissive display having at least two aligned tiles, comprising the steps of: a) finishing at least one edge of each tile and aligning the finished edges of such tiles; b) forming a monolithic structure including aligned tiles, each such aligned tile having a substrate, TFT circuits, drive circuits and bottom pixel electrodes for providing electrical signals to pixels in the corresponding tile; c) coating the aligned tiles with material that produces light when activated by an electric field; and d) forming at least one top pixel electrode over the coated material so that the coated material produces light when activated by an electric field from the electrode. SUMMARY According to an aspect, there is provided a tiled display device according to independent claims 1 and 15. Details of embodiments are provided in the dependent claims. Various embodiments of the disclosure are directed to a tiled display device, in which external visibility is improved and process productivity is improved. The disclosure is not limited to the above-described objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description. An embodiment of the disclosure may provide a tiled display device including a first panel including a first display element layer; a second panel including a second display element layer; and a shared layer including a color conversion part. The shared layer includes a first portion and a second portion. The first portion overlaps with the first panel in a plan view. The second portion overlaps with the second panel in a plan view. The color conversion part changes a wavelength of light provided from the first panel and the second panel. In an embodiment, the first panel and the second panel may form a lower panel of the tiled display device, and the shared layer may form an upper panel of the tiled display device. In an embodiment, the first panel and the second panel may be disposed on a same layer, and the first panel and the second panel may be spaced apart from each other, and a bonding area is disposed between the first panel and the second panel. In an embodiment, the bonding area may overlap the shared layer in a plan view. In an embodiment, the color conversion part may include a first color part providing light of a first color, a second color part providing light of a second color, and a third color part providing light of a third color. The first color part, the second color part, and the third color part may overlap the first panel and the second panel in a plan view. In an embodiment, the tiled display device may further include a first sub-pixel area emitting the light of the first color and overlapping the first color part in a plan view; a second sub-pixel area emitting the light of the second color and overlapping the second color part in a plan view; and a third sub-pixel area emitting the light of the third color and overlapping the third color part in a plan view. In an embodiment, the shared layer may further include a first color filter overlapping the first sub-pixel area in a plan view, a second color filter overlapping the second sub-pixel area in a plan view, and a third color filter overlapping third sub-pixel area in a plan view. In an embodiment, wherein the first display element layer includes a first light emitting element, and the second display element layer includes a second light emitting element. The tiled display device may further include an emission area in which the first light emitting element and the second light emitting element are disposed, and the emission area may be defined by components included in the first display element layer and the second display element layer. In an embodiment, each of the first display element layer and the second display element layer may include a bank protruding in a display direction of the tiled display device, and the bank may have a shape enclosing the emission area. In an embodiment, the emission area may include a first emission area overlapping the first sub-pixel area in a plan view, a second emission area overlapping the second sub-pixel area in a plan view, and a third emission area overlapping third sub-pixel area