Display device
AssigneeSharp Kabushiki Kaisha
InventorsTAKASHI OCHI, TOHRU SONODA
Life of this patent
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Abstract
A separation wall is provided in a frame shape along a circumferential edge of a through-hole in a non-display region inside a display region. Both side surfaces of the separation wall are inclined in a reverse tapered shape in which a width between both side surfaces gradually decreases toward a base substrate side. An internal dam wall is provided in a frame shape to overlap a circumferential end portion of an organic insulating film of a sealing film on a display region side of the separation wall in the non-display region. A frame-like slit is provided in a common function layer configuring each of the light-emitting elements to surround the separation wall on the display region side of the separation wall and to pass through the common function layer.
Claims15
A display device comprising:
- a base substrate;
- a thin film transistor layer disposed on the base substrate and including a first inorganic insulating film;
- a light-emitting element layer disposed on the thin film transistor layer and in which a plurality of light-emitting elements are arranged in correspondence with a plurality of subpixels configuring a display region;
- and
- a sealing film disposed on the light-emitting element layer to cover the light-emitting elements and in which a second inorganic insulating film, an organic insulating film, and a third inorganic insulating film are sequentially stacked,
- wherein a frame region is provided around the display region,
- a non-display region is provided in an island shape inside the display region,
- an external dam wall is provided in a frame shape in the frame region to surround the display region and overlap a circumferential end portion of the organic insulating film,
- a first electrode, a function layer, and a second electrode are sequentially stacked in each of the light-emitting elements,
- a through-hole extending through the base substrate in a thickness direction of the base substrate is formed in the non-display region,
- a separation wall is provided in a frame shape along a circumferential edge of the through-hole in the non-display region,
- both side surfaces of the separation wall are inclined in a reverse tapered shape in which a width between the both side surfaces gradually decreases toward the base substrate side,
- an internal dam wall is provided in a frame shape to overlap the circumferential end portion of the organic insulating film on the display region side of the separation wall in the non-display region,
- the function layer includes a common function layer provided to be common to the subpixels,
- a frame-like slit is provided in the common function layer to surround the separation wall on the display region side of the separation wall and to pass through the common function layer, and
- the first inorganic insulating film and the second inorganic insulating film are in contact with each other in the frame-like slit.
Dependencies are inferred from the claim text.