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KR-20260065592-A - DISPLAY DEVICE AND ELECTRONIC DEVICE

KR20260065592AKR 20260065592 AKR20260065592 AKR 20260065592AKR-20260065592-A

Abstract

A display device includes a pixel. The pixel comprises a first light-emitting element, a second light-emitting element, and a third light-emitting element arranged at equal intervals along a first direction; first pixel electrodes arranged along the first direction and in contact with the first to third light-emitting elements; and second pixel electrodes paired with the first pixel electrodes and arranged along the first direction and in contact with the first to third light-emitting elements. Each of the first to third light-emitting elements comprises a first semiconductor layer, an active layer, and a second semiconductor layer stacked together, wherein one of the first and second semiconductor layers is partially exposed by the other. The mesa region of the first light-emitting element is in contact with one of the first pixel electrodes, and the mesa region of the second light-emitting element is in contact with one of the second pixel electrodes. The arrangement order of the first and second pixel electrodes in contact with the first light-emitting element is the opposite of the arrangement order of the first and second pixel electrodes in contact with the second light-emitting element.

Inventors

  • 이계욱
  • 전상진
  • 김현준

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260508
Application Date
20260403

Claims (12)

  1. It includes a pixel, and the pixel is, First light-emitting element and second light-emitting element; First pixel electrodes electrically connected to the first and second light-emitting elements; A first pixel circuit and a second pixel circuit that respectively provide a driving current to the first and second light-emitting elements through the first pixel electrodes; and It includes second pixel electrodes that are paired with the first pixel electrodes, are electrically connected to the first and second light-emitting elements, and to which a power supply voltage is applied. The first pixel electrodes and the second pixel electrodes are disposed on the same layer, and A display device in which the arrangement order along the first direction of the first and second pixel electrodes electrically connected to the first light-emitting element is opposite to the arrangement order along the first direction of the first and second pixel electrodes electrically connected to the second light-emitting element.
  2. A display device according to claim 1, wherein the spacing in the first direction between the first pixel electrodes in contact with the first and second light-emitting elements is different from the spacing in the first direction between the second pixel electrodes in contact with the first and second light-emitting elements.
  3. A display device according to claim 1, wherein the first light-emitting element emits red light and the second light-emitting element emits green or blue light.
  4. A display device according to claim 1, wherein each of the first and second light-emitting elements comprises a mutually stacked first semiconductor layer, an active layer, and a second semiconductor layer, and includes a mesa region in which one of the first and second semiconductor layers is partially exposed by the other.
  5. In claim 4, the mesa region of the first light-emitting element overlaps with one of the first pixel electrodes, and A display device in which the mesa region of the second light-emitting element overlaps with one of the second pixel electrodes.
  6. In claim 5, each of the first and second light-emitting elements includes an inclined surface formed along the edge of the mesa region, and A display device in which the inclined surfaces of each of the first and second light-emitting elements face the same direction.
  7. In Paragraph 4, The mesa region of the first light-emitting element is formed in the first semiconductor layer, and A display device in which the mesa region of the second light-emitting element is formed on the second semiconductor layer.
  8. In claim 1, each of the first and second pixel circuits further includes a bridge pattern in contact with the first pixel electrodes, and A display device in which the shape of the bridge pattern of the first pixel circuit is different from the shape of the bridge pattern of the second pixel circuit.
  9. A display device according to claim 8, wherein the bridge pattern of the first pixel circuit overlaps with the second pixel electrodes in a plane, and the bridge pattern of the second pixel circuit does not overlap with the second pixel electrodes in a plane.
  10. A display device according to claim 1, wherein each of the first to third light-emitting elements is a flip-chip type micro light-emitting diode element.
  11. Light-emitting elements; First pixel electrodes electrically connected to the light-emitting elements; Pixel circuits that each provide a driving current to the light-emitting elements through the first pixel electrodes; and It includes second pixel electrodes that are paired with the first pixel electrodes, are electrically connected to the light-emitting elements, and to which a power supply voltage is applied. The first pixel electrodes and the second pixel electrodes are disposed on the same layer, and A display device in which the arrangement order along the first direction of the first and second pixel electrodes electrically connected to any one of the light-emitting elements is opposite to the arrangement order along the first direction of the first and second pixel electrodes electrically connected to an adjacent light-emitting element adjacent to any one of the light-emitting elements in the first direction.
  12. An electronic device including a display device, The above display device includes pixels, and The above pixel is, First light-emitting element and second light-emitting element; First pixel electrodes electrically connected to the first and second light-emitting elements; A first pixel circuit and a second pixel circuit that respectively provide a driving current to the first and second light-emitting elements through the first pixel electrodes; and It includes second pixel electrodes that are paired with the first pixel electrodes, are electrically connected to the first and second light-emitting elements, and to which a power supply voltage is applied. The first pixel electrodes and the second pixel electrodes are disposed on the same layer, and An electronic device in which the arrangement order along the first direction of the first and second pixel electrodes electrically connected to the first light-emitting element is opposite to the arrangement order along the first direction of the first and second pixel electrodes electrically connected to the second light-emitting element.

Description

Display Device and Electronic Device The present invention relates to a display device and an electronic device. As interest in information displays intensifies and the demand for portable information media rises, the demand for and commercialization of display devices are becoming a major focus. FIG. 1 is a plan view showing a display device according to one embodiment. Figure 2 is a drawing showing an example of a pixel of Figure 1. Figure 3 is a drawing showing another example of a pixel of Figure 1. FIG. 4 is a plan view showing one embodiment of the display device of FIG. 1. Figure 5 is a diagram showing the connection relationship between the pixel circuit and the stage included in the display device of Figure 4. Figure 6 is a plan view showing an example of the light-emitting region of Figure 4. FIG. 7 is a cross-sectional view schematically showing an example of a display device cut along line X-X' of FIG. 6. FIG. 8 is a cross-sectional view schematically illustrating an example of a display device according to a comparative embodiment. Figures 9 and 10 are plan views showing other examples of the light-emitting region of Figure 4. FIG. 11 is a circuit diagram showing an example of a subpixel of FIG. 2 to FIG. 4. Figure 12 is a layout diagram showing an example of a subpixel of Figure 4. Figure 13 is an enlarged view of area A1 of Figure 12. Figure 14 is an enlarged view of area A2 of Figure 12. Figure 15 is an enlarged view of area A3 of Figure 12. Figure 16 is a cross-sectional view taken along line A-A' of Figure 12. Figure 17 is a cross-sectional view taken along line B-B' of Figure 12. Figure 18 is a cross-sectional view taken along line C-C' of Figure 12. Figure 19 is a cross-sectional view taken along line D-D' of Figure 12. Figure 20 is a cross-sectional view taken along line E-E' of Figure 12. Figure 21 is a cross-sectional view taken along line F-F' of Figure 12. Figure 22 is a cross-sectional view taken along line G-G' of Figure 12. Figure 23 is a cross-sectional view taken along line H-H' of Figure 12. FIG. 24 is a cross-sectional view taken along line I-I' of FIG. 12. FIG. 25 is a layout diagram showing an example of a subpixel of FIG. 4. FIG. 26 is a perspective view showing a tile-type display device including a plurality of display devices according to one embodiment. FIG. 27 is an enlarged layout diagram showing the AA area of FIG. 26 in detail. FIG. 28 is a cross-sectional view showing an example of a tile-type display device cut along line J-J' of FIG. 27. FIG. 29 is an enlarged layout diagram showing the BB area of FIG. 26 in detail. FIG. 30 is a cross-sectional view showing an example of a tile-type display device cut along line N-N' of FIG. 29. FIG. 31 is a block diagram showing a tile-type display device according to one embodiment. The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. When elements or layers are referred to as being "on" another element or layer, this includes cases where another layer or element is interposed directly on or in the middle of another element. Throughout the specification, the same reference numerals refer to the same components. Shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings for describing embodiments are exemplary and therefore the invention is not limited to the depicted details. The term “connection” between two components may mean that it encompasses both electrical and physical connections, but is not necessarily limited thereto. For example, “connection” used in relation to circuit diagrams may mean electrical connections, while “connection” used in relation to cross-sectional and plan views may mean physical connections. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical scope of the present invention. The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship. Specific embodiments will be described below wit