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CN-122028609-A - Mother substrate for display device

CN122028609ACN 122028609 ACN122028609 ACN 122028609ACN-122028609-A

Abstract

A mother substrate for a display device according to an embodiment includes a display region for displaying an image, a margin region outside a dicing line for cutting the display region, a display element disposed in the display region, a1 st partition wall disposed in the margin region and including a plurality of 1 st sections and a plurality of 2 nd sections, and a1 st sealing layer formed of an inorganic insulating material and disposed above the display element and the 1 st sections and not disposed above the 2 nd sections. The 2 nd section has a different planar shape than the 1 st section.

Inventors

  • IWASAKI NAOYA
  • LIU ZECHANG
  • ISHIKAWA TOMOKAZU

Assignees

  • 株式会社迈格诺皓特

Dates

Publication Date
20260512
Application Date
20251107
Priority Date
20241112

Claims (20)

  1. 1. A mother substrate for a display device is characterized by comprising: a display area for displaying an image; a blank area outside the cutting line for cutting out the display area; A display element disposed in the display region; a1 st partition wall disposed in the margin region and including a plurality of 1 st sections and a plurality of 2 nd sections, and A1 st sealing layer formed of an inorganic insulating material, disposed above the display element and the 1 st section, and not disposed above the 2 nd section, The 2 nd section has a different planar shape than the 1 st section.
  2. 2. The mother substrate for a display device according to claim 1, wherein, The 1 st sections each have the same planar shape, The 2 nd sections have the same planar shape, respectively.
  3. 3. The mother substrate for a display device according to claim 2, wherein, The 1 st section has a1 st closed area in a top view, The 2 nd section has a2 nd closed region having a different planar shape from the 1 st closed region in a plan view.
  4. 4. The mother substrate for a display device according to claim 3, wherein, The 2 nd section has more of the 2 nd closed region than the 1 st closed region of the 1 st section in plan view.
  5. 5. The mother substrate for a display device according to claim 4, wherein, The 1 st section has one of the 1 st closed areas in a top view, The 2 nd section has a plurality of the 2 nd closed regions in a plan view.
  6. 6. The mother substrate for a display device according to claim 3, wherein, The area of the 1 st closed region is larger than the area of the 2 nd closed region.
  7. 7. The mother substrate for a display device according to claim 3, wherein, The 1 st section has a1 st wall portion forming the 1 st closed region, The 2 nd section has a 2 nd wall forming the 2 nd closed region, The area of the 2 nd wall portion is larger than the area of the 1 st wall portion.
  8. 8. The mother substrate for a display device according to any one of claims 1 to 7, The Yu Baiou domain has: Zone 1 configured with the zone 1, and A2 nd region of the 2 nd section is configured.
  9. 9. The mother substrate for a display device according to claim 8, wherein, The Yu Baiou th domain has a plurality of the 1 st regions, The 2 nd region surrounds the 1 st region.
  10. 10. A mother substrate for a display device is characterized by comprising: a display area for displaying an image; a blank area outside the cutting line for cutting out the display area; An inorganic insulating layer disposed in the display region and the margin region; A display element disposed in the display region; A1 st partition wall including a plurality of 1 st sections and a plurality of 2 nd sections, the 1 st partition wall being disposed above the inorganic insulating layer in the margin region; A1 st sealing layer formed of an inorganic insulating material and disposed above the display element and the 1 st section and not disposed above the 2 nd section, and And a resin layer disposed on the 1 st sealing layer in the margin region.
  11. 11. The mother substrate for a display device according to claim 10, wherein, The end of the resin layer is located above the 1 st sealing layer.
  12. 12. The mother substrate for a display device according to claim 11, wherein, The end of the resin layer overlaps the end of the 1 st sealing layer.
  13. 13. The mother substrate for a display device according to claim 11, wherein, The resin layer is not disposed above the 2 nd section.
  14. 14. The mother substrate for a display device according to claim 11, wherein, The 1 st section and the 2 nd section each have: A 1 st lower portion disposed above the inorganic insulating layer, and A1 st upper portion disposed above the 1 st lower portion and protruding from a side surface of the 1 st lower portion.
  15. 15. The mother substrate for a display device according to claim 14, wherein, The display device further comprises a 2 nd barrier rib which is arranged in the display region and surrounds the display element, The 2 nd partition wall has: A2 nd lower portion disposed above the inorganic insulating layer, and A2 nd upper portion disposed above the 2 nd lower portion and protruding from a side surface of the 2 nd lower portion.
  16. 16. The mother substrate for a display device according to claim 11, wherein, Further provided with a laminated film including an organic layer and an upper electrode included in the display element, The laminated film is disposed between the 1 st segment and the 1 st sealing layer.
  17. 17. The mother substrate for a display device according to claim 16, wherein, The laminated film is disposed in a closed region of the 1 st section.
  18. 18. The mother substrate for a display device according to claim 17, wherein, The laminated film is disposed between adjacent 1 st sections.
  19. 19. The mother substrate for a display device according to claim 18, wherein, The laminated film further includes a cap layer disposed over the upper electrode, The cover layer is configured in the blank area.
  20. 20. The mother substrate for a display device according to any one of claims 10 to 19, The resin layer is provided with a2 nd sealing layer, wherein the 2 nd sealing layer is formed by inorganic insulating materials and covers the resin layer and the 2 nd section.

Description

Mother substrate for display device The present application claims priority based on japanese patent application No. 2024-197539 filed 11/12/2024 and japanese patent application No. 2025-115665 filed 7/9/2025, the contents of which are incorporated herein by reference in their entirety. Technical Field Embodiments of the present invention relate to a mother substrate for a display device. Background In recent years, display devices using Organic Light Emitting Diodes (OLEDs) as display elements have been put into practical use. In such a display device, a technique for improving the yield is required. Disclosure of Invention In general, according to an embodiment, a mother substrate for a display device includes a display region for displaying an image, a margin region outside a dicing line for cutting the display region, a display element disposed in the display region, a 1 st partition wall disposed in the margin region and including a plurality of 1 st sections and a plurality of 2 nd sections, and a 1 st sealing layer formed of an inorganic insulating material and disposed above the display element and the 1 st sections and not disposed above the 2 nd sections. The 2 nd section has a different planar shape than the 1 st section. According to another embodiment, a mother substrate for a display device includes a display region for displaying an image, a margin region outside a dicing line for cutting the display region, an inorganic insulating layer disposed in the display region and the margin region, a display element disposed in the display region, a 1 st partition wall including a plurality of 1 st sections and a plurality of 2 nd sections disposed above the inorganic insulating layer in the margin region, a 1 st sealing layer formed of an inorganic insulating material and disposed above the display element and the 1 st sections and not disposed above the 2 nd sections, and a resin layer disposed above the 1 st sealing layer in the margin region. With this configuration, a mother substrate for a display device can be provided, which can improve the yield. Drawings Fig. 1 is a diagram showing a configuration example of a display device according to embodiment 1. Fig. 2 is a schematic plan view showing an example of the layout of the subpixels. Fig. 3 is a schematic cross-sectional view of the display panel along line III-III in fig. 2. Fig. 4 is a schematic plan view of the mother substrate of embodiment 1. Fig. 5 is a schematic plan view of a part of the mother substrate. Fig. 6 is a schematic plan view showing the island and its vicinity. Fig. 7 is a schematic enlarged view showing a VII part in fig. 6. Fig. 8 is a schematic cross-sectional view taken along line VIII-VIII in fig. 7. Fig. 9 is a flowchart showing an example of a method for manufacturing a display device. Fig. 10A is a schematic cross-sectional view showing a manufacturing process of the display device. Fig. 10B is a schematic cross-sectional view showing the step subsequent to fig. 10A. Fig. 10C is a schematic cross-sectional view showing the step subsequent to fig. 10B. Fig. 10D is a schematic cross-sectional view showing the step subsequent to fig. 10C. Fig. 10E is a schematic cross-sectional view showing the step subsequent to fig. 10D. Fig. 10F is a schematic cross-sectional view showing the step subsequent to fig. 10E. Fig. 10G is a schematic cross-sectional view showing a step subsequent to fig. 10F. Fig. 10H is a schematic cross-sectional view showing the step subsequent to fig. 10G. Fig. 10I is a schematic cross-sectional view showing a step subsequent to fig. 10H. Fig. 10J is a schematic cross-sectional view showing a step subsequent to fig. 10I. Fig. 11A is a schematic cross-sectional view showing a structure of a margin region in a manufacturing process of a display device. Fig. 11B is a schematic cross-sectional view showing a process subsequent to fig. 11A. Fig. 11C is a schematic cross-sectional view showing the step subsequent to fig. 11B. Fig. 11D is a schematic cross-sectional view showing the step subsequent to fig. 11C. Fig. 12 is a schematic enlarged view showing a display device according to embodiment 2. Fig. 13 is a schematic cross-sectional view taken along line XIII-XIII in fig. 12. Fig. 14 is a schematic enlarged view showing a display device according to embodiment 3. Fig. 15 is a schematic cross-sectional view taken along the line XV-XV in fig. 14. Detailed Description Hereinafter, embodiments will be described with reference to the drawings. The disclosure is merely an example, and any suitable modifications which would be apparent to one skilled in the art while maintaining the gist of the present invention are certainly within the scope of the present invention. In addition, in order to make the description more clear, the width, thickness, shape, and the like of each portion may be schematically shown as compared with the actual embodiment, but this is merely an example, and does not limit the explanat