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KR-102961766-B1 - DISPLAY DEVICE

KR102961766B1KR 102961766 B1KR102961766 B1KR 102961766B1KR-102961766-B1

Abstract

A display device according to one embodiment comprises a substrate, a plurality of transistors located on the substrate, an initialization voltage line located on the substrate and connected to at least one of the plurality of transistors and including a first initialization voltage line extended along a first direction and a second initialization voltage line extended along a second direction, and a driving voltage line located on the substrate, connected to at least one of the plurality of transistors and extended along the second direction, wherein the second initialization voltage line and the driving voltage line overlap each other.

Inventors

  • 김미나
  • 이슬비
  • 정광철
  • 조용준

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260507
Application Date
20200902

Claims (20)

  1. substrate, A plurality of transistors located on the above substrate, A scan line located on the substrate, connected to at least one of the plurality of transistors, and extending along a first direction, An initialization voltage line positioned on the substrate and connected to at least one of the plurality of transistors, comprising a first initialization voltage line extended along the first direction and a second initialization voltage line extended along a second direction perpendicular to the first direction, and It includes a driving voltage line located on the substrate, connected to at least one of the plurality of transistors, and extending along the second direction, A display device in which at least a portion of the second initialization voltage line and the driving voltage line overlap each other.
  2. In paragraph 1, The first initialization voltage line and the second initialization voltage line are a display device located on different layers.
  3. In paragraph 2, A display device stacked in the order of the first initialization voltage line, the driving voltage line, and the second initialization voltage line.
  4. In paragraph 1, A display device in which the second initialization voltage line is positioned for every n pixels arranged in the first direction: The above n is a natural number greater than or equal to 1.
  5. In Paragraph 1, The above second initialization voltage line is a display device located at each of the two pixels arranged in the above first direction.
  6. In paragraph 1, The above display device includes a connecting member located on the same layer as the driving voltage line, and The above connecting member is a display device that electrically connects the second initialization voltage line and the first initialization voltage line.
  7. In paragraph 6, The second initialization voltage line includes an extension protruding in the first direction, and The above extension is a display device that overlaps with the above connecting member.
  8. In paragraph 6, The above display device is, A display device comprising a first conductive layer, a second conductive layer, a third conductive layer, and a fourth conductive layer sequentially stacked on the substrate.
  9. In paragraph 8, A display device in which the first initialization voltage line, the second initialization voltage line, and the driving voltage line are located on different conductive layers.
  10. In Paragraph 9, The first initialization voltage line is located in the second conductive layer, and The above driving voltage line and the above connecting member are located in the third conductive layer, and The above second initialization voltage line is a display device located on the above fourth conductive layer.
  11. substrate, A plurality of transistors located on the above substrate, A scan line located on the substrate, connected to at least one of the plurality of transistors, and extending along a first direction, and An initialization voltage line located on the substrate, connected to at least one of the plurality of transistors, and extending along a second direction perpendicular to the first direction, and It is located on the substrate and is connected to at least one of the plurality of transistors, and includes a driving voltage line extending along the second direction. A display device in which the initial voltage line and the driving voltage line extend along the same direction, and at least a portion of the initial voltage line and the driving voltage line overlap each other.
  12. In Paragraph 11, The above initialization voltage line includes a first initialization voltage line and a second initialization voltage line, and The second initialization voltage line extends in the same direction as the driving voltage line, and A display device in which the first initialization voltage line and the second initialization voltage line are located on different layers and are electrically connected.
  13. In Paragraph 12, A display device stacked in the order of the first initialization voltage line, the driving voltage line, and the second initialization voltage line.
  14. In Paragraph 12, The first initialization voltage line extends along the first direction, and the second initialization voltage line extends along the second direction, and A display device in which the second initialization voltage line is positioned for every n pixels arranged in the first direction: The above n is a natural number greater than or equal to 1.
  15. In Paragraph 12, The above display device includes a connecting member located on the same layer as the driving voltage line, and The above connecting member is a display device that electrically connects the second initialization voltage line and the first initialization voltage line.
  16. In Paragraph 15, The second initialization voltage line includes an extension protruding in the first direction, and The above connecting member overlaps with the above extension, and A display device in which the above-mentioned connecting member and the above-mentioned extension are electrically connected.
  17. In Paragraph 16, The above display device is, A display device comprising a first conductive layer, a second conductive layer, a third conductive layer, and a fourth conductive layer sequentially stacked on the substrate.
  18. In Paragraph 17, The first initialization voltage line is located in the second conductive layer, and The above driving voltage line and the above connecting member are located in the third conductive layer, and The above second initialization voltage line is a display device located on the above fourth conductive layer.
  19. In Paragraph 16, The first initialization voltage line extends along the first direction, and the second initialization voltage line extends along the second direction, and The second initialization voltage line is located at least once for every two pixels arranged in the first direction, and A display device comprising a first pixel including the second initialization voltage line and a second pixel not including the second initialization voltage line.
  20. In Paragraph 19, The connecting member overlapping with the first pixel includes a connecting extension that overlaps with the extension. A display device in which the connecting member overlapping with the second pixel above does not include a connecting extension portion.

Description

Display Device The present disclosure relates to a display device, and more specifically, to a display device with an improved aperture ratio. A display device is a device that displays an image, and includes Liquid Crystal Displays (LCDs) and Organic Light Emitting Diodes (OLEDs). These display devices are used in a wide variety of electronic devices, such as mobile phones, navigation systems, digital cameras, e-books, portable game consoles, and various terminals. The display device may include a plurality of pixels arranged in row and column directions. Within each pixel, various components such as transistors and capacitors, and various wirings capable of supplying signals to these components may be located. FIG. 1 is a schematic plan view of a portion of a display device according to one embodiment. FIG. 2 is a circuit diagram of a pixel according to one embodiment. Figure 3 is a plan view of two adjacent pixels. Figure 4 is a cross-sectional view taken along the lines IV-IV' and IV''-IV''' of Figure 3. Figure 5 is a cross-sectional view taken along the V-V' line and V''-V''' line of Figure 3. Figures 6, 7, 8, 9, and 10 are each plan views showing only some components in two adjacent pixels. FIGS. 11, FIGS. 12, and FIGS. 13 are each schematic plan views of a portion of a display device according to one embodiment. Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be embodied in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification. Furthermore, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and thus the present invention is not necessarily limited to what is illustrated. Thicknesses have been enlarged in the drawings to clearly represent various layers and regions. Additionally, for convenience of explanation, the thickness of some layers and regions has been exaggerated in the drawings. Furthermore, when it is said that a part, such as a layer, membrane, region, or plate, is "on" or "on" another part, this includes not only the case where it is "directly above" the other part, but also the case where there is another part in between. Conversely, when it is said that a part is "directly above" another part, it means that there is no other part in between. Also, saying that a part is "on" or "on" a reference part means that it is located above or below the reference part, and does not necessarily mean that it is located "on" or "on" in the direction opposite to gravity. Furthermore, throughout the specification, when a part is described as "including" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. Additionally, throughout the specification, "planar" means when the subject part is viewed from above, and "cross-sectional" means when the cross-section obtained by vertically cutting the subject part is viewed from the side. Hereinafter, a display device according to one embodiment will be described with reference to FIG. 1. FIG. 1 is a schematic plan view of a part of a display device according to one embodiment. FIG. 1 is a simplified illustration of a display device according to one embodiment of the present invention, consisting only of a first initialization voltage line (127), a second initialization voltage line (128), a driving voltage line (172), and a pixel electrode (191). Referring to FIG. 1, the pixel electrode (191) includes a first pixel electrode (191a), a second pixel electrode (191b), and a third pixel electrode (191c). The area overlapping with the first pixel electrode (191a) emits light representing a first color, the area overlapping with the second pixel electrode (191b) emits light representing a second color, and the area overlapping with the third pixel electrode (191c) emits light representing a third color, but is not limited thereto. A pixel (PX) is illustrated in FIG. 1, and a single pixel (PX) includes a plurality of transistors (T1, T2, T3, T4, T5, T6, T7), a holding capacitor (Cst), and a light-emitting diode (LED) connected to multiple signal lines as described in FIG. 2. In the present specification, the area corresponding to a single pixel (PX) refers to the area shown by the dotted line in FIG. 2. Referring to FIG. 1, a single pixel electrode (191) may be connected to a single pixel (PX). Referring to FIG. 1, the first initialization voltage line (127) may be extended along a first direction (DR1), and the second initialization voltage line (128) may be extended along a second direction (DR2) that