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EP-4739058-A2 - DISPLAY DEVICE

EP4739058A2EP 4739058 A2EP4739058 A2EP 4739058A2EP-4739058-A2

Abstract

A display device comprises a substrate, a data link line (DL), a power link line (VL), and a dummy pattern (DM). The substrate includes a display area in which pixels are arranged and a non-display area outside the display area. The data link line (DL) is positioned in the non-display area to deliver a predetermined signal to the pixels. The power link line (VL) is spaced apart from the data link line (DL) at a predetermined distance in the non-display area and delivers a predetermined power to the pixels. The dummy pattern (DM) is positioned between the data link line (DL) and the power link line (VL) in the non-display area.

Inventors

  • KIM, SANGHO
  • JO, Boeun
  • KIM, TAEKYOUNG

Assignees

  • LG Display Co., Ltd.

Dates

Publication Date
20260506
Application Date
20190925

Claims (15)

  1. A display device comprising: a substrate (SUB) including a display area (DA) in which a plurality of pixels are arranged and a non-display area (NDA) outside the display area (DA), the non-display area (NDA) including a pad area PA including a plurality of pads, a link area (LA), and a bending area (BA) disposed between the display area (DA) and the pad area (PA); a data link line (DL) disposed in the link area (LA) to deliver a predetermined signal to the pixel (P); a data routing line (DRL) connected to the data link line (DL); a power link line (VL) spaced apart from the data link line (DL) at a predetermined distance in the link area (LA) to deliver a predetermined power to the pixel (P); a power routing line (VRL) branched from the power link line (VL) and extending to the bending area (BA); and a dummy pattern (DM) disposed between the data link line (DL) and the power link line (VL) in the link area (LA), no signal being applied to the dummy pattern (DM), wherein at least one of the power routing line (VRL) and the data routing line (DRL) has a shape branched into a plurality of patterns in the bending area (BA).
  2. The display apparatus of claim 1, wherein the display area (DA) further includes a plurality of gate lines and data lines, and wherein the dummy pattern (DM) is floated.
  3. The display apparatus of claim 1 or 2, wherein the data link line (DL) and the data routing line (DRL) are connected to each other through a data contact hole (DCH) penetrating at least one insulating layer (INT) interposed therebetween.
  4. The display apparatus of any one of claims 1 to 3, wherein the dummy pattern (DM) includes a first dummy pattern (DM1) made of a same material as the data link line (DL) in a layer corresponding to the data link line (DL) and a second dummy pattern (DM2) made of a same material as the data routing line (DRL) in the layer corresponding to the data routing line (DRL).
  5. The display apparatus of claim 3 or of claim 3 and 4, wherein the first dummy pattern (DM1) and the second dummy pattern (DM2) are connected to each other through a dummy contact hole (DH) penetrating the at least one insulating layer (INT).
  6. The display apparatus of any one of claims 1 to 5, wherein at least one of the power routing line (VRL) and the data routing line (DRL) has a shape for distributing stress.
  7. The display apparatus of claim 6, wherein at least one of the power routing line (VRL) and the data routing line (DRL) has a plane shape of a zigzag in the bending area BA.
  8. The display apparatus of claim 6 or 7, wherein at least one of the power routing line (VRL) and the data routing line (DRL) is extended in a diagonal direction tilted at a preset angle from a direction in which stress is applied
  9. The display apparatus of any one of claims 1 to 8, wherein the substrate (SUB) is bent toward a backplane of the display device in the bending area (BA)
  10. The display device of any one of claims 1 to 9, further comprising an open hole (OH) penetrating at least one of insulating layers (INT, GI) interposed between the data routing line (DRL) or the power routing line (VRL) and the substrate (SUB), wherein the open hole (OH) is disposed in the bending area (BA).
  11. The display device of any one of claims 1 to 10, further comprising a connection member (30) bonded to the pads.
  12. The display device of claim 11, wherein the connection member (30) includes at least one of COF(Chip On Film) and COP(Chip On Panel).
  13. The display device of any one of claims 1 to 12, wherein the dummy pattern (DM) is disposed between the data link line (DL) and the power link line (VL) in the bending area (BA).
  14. The display device of claim 10 or of claim 10 and any one of claims 11 to 13, wherein at least one of insulating layers (INT, GI) is removed in the bending area (BA).
  15. The display device of any one of claims 1 to 14, wherein the power routing line (VRL) and the data routing line (DRL) have a shape branched into a plurality of patterns in the bending area (BA).

Description

BACKGROUND OF THE INVENTION Field of the invention The present invention relates to a display device having a bending area. Related Art As the information technology is developed, the market of a display device, that is, a connection medium between a user and information, grows larger. Accordingly, the use of display devices, such as an organic light-emitting diode (OLED) display device, a liquid crystal display (LCD) and a plasma display panel (PDP), increases. From among them, the OLED display device has low power consumption and can be fabricated thinner compared to the LCD that requires a backlight because the OLED display device is a self-emissive device. Furthermore, the OLED display device has advantages of a wide viewing angle and fast response speed. The process technology of the OLED display device has been developed up to a large screen mass production technology level, and thus the market of the OLED display device is expanded while competing with the LCD. A pixel of the OLED display device includes an OLED, that is, a self-emissive device. The OLED display device may be divided in various ways depending on the type of emission material, an emission method, an emission structure, a driving method, etc. The OLED display device may be divided into fluorescent emission and phosphorescent emission depending on its emission method, and may be divided into a top emission structure and a bottom emission structure depending on its emission structure. Furthermore, the OLED display device may be divided into a passive matrix OLED (PMOLED) and an active matrix OLED (AMOLED) depending on its driving method. Efforts to reduce the bezel area of a display device are recently made. The bezel area is a non-display area in which an input image is not implemented (displayed). An increase in the area of the bezel area is problematic because it deteriorates the aesthetic sense and visibility. SUMMARY OF THE INVENTION The present invention provides a display device having an improved film lifting phenomenon. In an aspect, a display device includes a substrate, a data link line, a power link line, and a dummy pattern. The substrate includes a display area in which pixels are arranged and a non-display area outside the display area. The data link line is positioned in the non-display area to deliver a predetermined signal to the pixels. The power link line is spaced apart from the data link line at a predetermined distance in the non-display area and delivers a predetermined power to the pixels. The dummy pattern is positioned between the data link line and the power link line in the non-display area. According to the present disclosure, there is provided a display device defined in claim 1. Further exemplary embodiments are defined in the dependent claims. Various embodiments provide a display device, comprising: a substrate comprising a display area in which pixels are arranged and a non-display area outside the display area; a data link line positioned in the non-display area to deliver a predetermined signal to the pixels; a power link line spaced apart from the data link line at a predetermined distance in the non-display area to deliver a predetermined power to the pixels; and a dummy pattern positioned between the data link line and the power link line in the non-display area. According to various embodiments, the dummy pattern comprises a metal material. According to various embodiments, the dummy pattern is floated. According to various embodiments, the display device further comprises: a pad disposed in the non-display area; and a data routing line connecting the data link line and the corresponding pad in the non-display area, wherein the data link line and the data routing line are connected through a data contact hole penetrating at least one insulating layer interposed therebetween. According to various embodiments, the dummy pattern comprises a same material as the data link line on a layer corresponding to the data link line. According to various embodiments, the dummy pattern comprises a same material as the data routing line on a layer corresponding to the data routing line. According to various embodiments, the dummy pattern comprises: a first dummy pattern comprising a same material as the data link line on a layer corresponding to the data link line; and a second dummy pattern comprising a same material as the data routing line on a layer corresponding to the data routing line, wherein the first dummy pattern and the second dummy pattern are connected through a dummy contact hole penetrating the insulating layer. According to various embodiments, the display device further comprises: an auxiliary dummy pattern overlapping the power link line on a layer corresponding to the data link line and the dummy pattern, and the auxiliary dummy pattern comprising a same material as the data link line and the dummy pattern, wherein the auxiliary dummy pattern is electrically connected to the power link line th