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EP-4739046-A1 - DISPLAY DEVICE AND ELECTRONIC DEVICE

EP4739046A1EP 4739046 A1EP4739046 A1EP 4739046A1EP-4739046-A1

Abstract

A display device includes: a substrate; and a first light emitting diode unit, a second light emitting diode unit, and a third light emitting diode unit that are disposed above the substrate, and the first light emitting diode unit includes at least one first light emitting diode emitting a first color light, the second light emitting diode unit includes at least one second light emitting diode emitting a second color light different from the first color light, the third light emitting diode unit includes at least one third light emitting diode emitting a third color light different from the first color light and the second color light, and a planar size of the at least one third light emitting diode is greater than a planar size of the at least one first light emitting diode and a planar size of the at least one second light emitting diode.

Inventors

  • LEE, JONGWON
  • KANG, JAE WOONG
  • JANG, JIN HYUK

Assignees

  • Samsung Display Co., Ltd.

Dates

Publication Date
20260506
Application Date
20251031

Claims (15)

  1. A display device comprising: a substrate (SUB); and a first light emitting diode unit (100Ur), a second light emitting diode unit (100Ug), and a third light emitting diode unit (100Ub) that are disposed above the substrate (SUB), wherein the first light emitting diode unit (100Ur) includes at least one first light emitting diode (101r, 102r, 103r, 104r) emitting a first color light, the second light emitting diode unit (100Ug) includes at least one second light emitting diode (101g, 102g, 103g, 104g) emitting a second color light different from the first color light, the third light emitting diode unit (100Ub) includes at least one third light emitting diode (101b, 102b, 103b, 104b) emitting a third color light different from the first color light and the second color light, and a planar size of the at least one third light emitting diode (101b, 102b, 103b, 104b) is greater than a planar size of the at least one first light emitting diode (101r, 102r, 103r, 104r) and a planar size of the at least one second light emitting diode (101g, 102g, 103g, 104g).
  2. The display device of claim 1, wherein a shortest width (Wb) of the at least one third light emitting diode (101b, 102b, 103b, 104b) in a plan view is greater than a shortest width (Wr) of the at least one first light emitting diode (101r, 102r, 103r, 104r) in the plan view and a shortest width (Wg) of the at least one second light emitting diode (101g, 102g, 103g, 104g) in the plan view.
  3. The display device of claim 2, wherein the shortest width (Wb) of the at least one third light emitting diode (101b, 102b, 103b, 104b) is greater than or equal to a reference size, and at least one of the shortest width (Wr) of the at least one first light emitting diode (101r, 102r, 103r, 104r) and the shortest width (Wg) of the at least one second light emitting diode (101g, 102g, 103g, 104g) is less than the reference size.
  4. The display device of claim 3, wherein the reference size is within a range of 3 micrometers to 5 micrometers.
  5. The display device of any one of the preceding claims 1 to 4, wherein the shortest width (Wg) of the at least one third light emitting diode (101b, 102b, 103b, 104b) is less than 10 micrometers.
  6. The display device of any one of the preceding claims 1 to 5, wherein at least one of the number of the at least one first light emitting diode (101r, 102r, 103r, 104r) included in the first light emitting diode unit (100Ur) and the number of the at least one second light emitting diode (101g, 102g, 103g, 104g) included in the second light emitting diode unit (100Ug) is greater than the number of the at least one third light emitting diode (101b, 102b, 103b, 104b) included in the third light emitting diode unit (100Ub).
  7. The display device of any one of the preceding claims 1 to 6, wherein the first light emitting diode unit (100Ur) includes at least one red-light emitting diode (101r, 102r, 103r, 104r), the second light emitting diode unit (100Ug) includes at least one green-light emitting diode (101g, 102g, 103g, 104g), and the third light emitting diode unit (100Ub) includes at least one blue-light emitting diode (101b, 102b, 103b, 104b).
  8. The display device of any one of the preceding claims 1 to 7, further comprising: a driving circuit portion (700) that is disposed between each of the first light emitting diode unit (100Ur), the second light emitting diode unit (100Ug), the third light emitting diode unit (100Ub), and the substrate (SUB).
  9. The display device of claim 8, further comprising: a pixel circuit portion (PXC) electrically connected to at least one first electrode (170) of the at least one first light emitting diode (101r, 102r, 103r, 104r), the at least one second light emitting diode (101g, 102g, 103g, 104g), and the at least one third light emitting diode (101b, 102b, 103b, 104b), wherein the pixel circuit portion (PXC) includes a plurality of transistors.
  10. The display device of claim 9, wherein the driving circuit portion (700) includes the pixel circuit portion (PXC).
  11. The display device of claim 9, wherein the pixel circuit portion (PXC) is disposed between the substrate (SUB) and the driving circuit portion (700).
  12. The display device of any one of the preceding claims 1 to 11, wherein a planar shape of at least one of the at least one first light emitting diode (101r, 102r, 103r, 104r), the at least one second light emitting diode (101g, 102g, 103g, 104g), and the at least one third light emitting diode (101b, 102b, 103b, 104b) is a circle or a rectangle.
  13. The display device of any one of the preceding claims 1 to 12, wherein the second light emitting diode unit (100Ug) includes at least one green-light emitting diode (101g, 102g, 103g, 104g), the third light emitting diode unit (100Ub) includes at least one blue-light emitting diode (101b, 102b, 103b, 104b), the shortest width (Wb) of the at least one blue-light emitting diode (101b, 102b, 103b, 104b) in a plan view is 3 micrometers or more, and the shortest width (Wg) of the at least one green-light emitting diode (101g, 102g, 103g, 104g) in the plan view is less than 3 micrometers.
  14. The display device of claim 13, wherein the shortest width (Wg) of the at least one green-light emitting diode (101g, 102g, 103g, 104g) is less than 10 micrometers.
  15. An electronic device, comprising a display device according to any one of the preceding claims 1 to 14.

Description

BACKGROUND 1. Technical Field Embodiments relate to a display device and an electronic device. The electronic device may include the display device. 2. Description of the Related Art A display device includes pixels that are units for displaying an image. Each pixel may include a pixel circuit portion and a light emitting portion connected to the pixel circuit portion. The light emitting portion may be implemented in various forms, and for example, it may include a light emitting diode that is a light emitting element. The light emitting diode may have various sizes, and an ultra-small light emitting diode of the micro scale or nano scale using a Group II-VI compound semiconductor material or a Group III-V compound semiconductor material has recently been developed. The light emitting diode may be directly formed on a substrate included in the display device, or may be installed on the substrate in a form of a chip. The light emitting diode may emit light of one of several basic colors. The pixel circuit portion for driving the light emitting diode may be integrated on the substrate, or may be included in a light emitting diode chip. The pixel circuit portion may include a plurality of transistors and at least one capacitor. The pixel circuit portion may control an amount of a driving current transferred to the light emitting diode so that each pixel emits light of a desired luminance. SUMMARY Embodiments are intended to provide a display device and an electronic device capable of improving both luminance efficiency and reliability of light emitting diodes. However, embodiments are not limited to those set forth herein. The above and other embodiments will become more apparent to one of ordinary skill in the art to which the disclosure pertains by referencing the detailed description of the disclosure given below. A display device according to an embodiment includes: a substrate; and a first light emitting diode unit, a second light emitting diode unit, and a third light emitting diode unit that are disposed above the substrate, and the first light emitting diode unit includes at least one first light emitting diode emitting a first color light, the second light emitting diode unit includes at least one second light emitting diode emitting a second color light different from the first color light, the third light emitting diode unit includes at least one third light emitting diode emitting a third color light different from the first color light and the second color light, and a planar size of the at least one third light emitting diode is greater than a planar size of the at least one first light emitting diode and a planar size of the at least one second light emitting diode. A shortest width of the at least one third light emitting diode in a plan view may be greater than a shortest width of the at least one first light emitting diode in the plan view and a shortest width of the at least one second light emitting diode in the plan view. A shortest width of the at least one third light emitting diode may be greater than or equal to a reference size, and at least one of a shortest width of the at least one first light emitting diode and a shortest width of the at least one second light emitting diode may be less than the reference size. The reference size may be within a range of about 3 micrometers to about 5 micrometers. The shortest width of the at least one third light emitting diode may be less than about 10 micrometers. At least one of the number of the at least one first light emitting diode included in the first light emitting diode unit and the number of the at least one second light emitting diode included in the second light emitting diode unit may be greater than the number of the at least one third light emitting diode included in the third light emitting diode unit. The display device may further include a driving circuit portion that is disposed between each of the first light emitting diode unit, the second light emitting diode unit, and the third light emitting diode unit and the substrate. The display device may further include a pixel circuit portion that is electrically connected to at least one first electrode of the at least one first light emitting diode, the at least one second light emitting diode, and the at least one third light emitting diode, and the pixel circuit portion may include a plurality of transistors. The driving circuit portion may include the pixel circuit portion. The pixel circuit portion may be disposed between the substrate and the driving circuit portion. A planar shape of at least one of the at least one first light emitting diode, the at least one second light emitting diode, and the at least one third light emitting diode may be a circle or a rectangle. A display device according to another embodiment includes: a substrate; and a first light emitting diode unit and a second light emitting diode unit that are disposed above the substrate, and the first light