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US 11,456,437 B2Granted
Electroluminescence display device having a through-hole in display area
AssigneeLG Display Co., Ltd.
InventorJunggi Kim
Life of this patent
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Abstract
An electroluminescence display device having a through-hole in a display area is discussed. The electroluminescence display device can include a substrate, a through-hole, an inner dam, and a hole-trench. The substrate includes a display area where a plurality of pixels for displaying images are arranged, and a non-display area surrounding the display area. The through-hole is arranged inside the display area. The inner dam surrounds the through-hole. The hole-trench surrounds the inner dam, and is formed as the substrate is partially recessed as much as a certain thickness.
Claims17
An electroluminescence display device comprising:
- a substrate having a display area and a non-display area surrounding the display area, the display area having a plurality of pixels for displaying images;
- a pixel array layer disposed on the substrate, the pixel array layer including a thin film transistor layer formed on the substrate, and a light emitting diode electrically connected with a thin film transistor arranged in the thin film transistor layer;
- an encapsulation layer disposed on the pixel array layer, the encapsulation layer including a first inorganic layer, an organic layer on the first inorganic layer and a second inorganic layer on the organic layer;
- a through-hole arranged inside the display area, the through-hole penetrating the substrate, the pixel array layer and the encapsulation layer;
- a first inner dam surrounding the through-hole;
- and
- a hole-trench surrounding the first inner dam,
- wherein the hole-trench includes:
- a bottom surface defined at a position recessed at a certain depth from an upper surface of the substrate;
- an upper surface defined at a bottom surface of the first inner dam;
- and
- a sidewall for connecting the bottom surface of the hole-trench with the upper surface of the hole-trench,
- wherein the first inorganic layer is configured to be deposited on the upper surface, the sidewall and the bottom surface of the hole-trench, and to cover the inner dam,
- wherein a light emitting layer of the light emitting diode is arranged on the bottom surface of the hole-trench and the upper surface of the hole-trench, except for the sidewall of the hole-trench, so that the hole-trench includes a remaining interior portion that excludes the light emitting layer and the first inorganic layer,
- wherein the organic layer is disposed in the hole-trench to fill-in the remaining interior portion of the hole-trench, and to be in contact with a portion of an inner wall of the inner dam, and
- wherein the second inorganic layer is configured to be deposited on the organic layer, and to be in contact with the first inorganic layer on an upper surface and an outer sidewall of the inner dam.
13 more elements
An electroluminescence display device comprising:
- a substrate having a display area and a non-display area surrounding the display area, the display area having a plurality of pixels for displaying images;
- an encapsulation layer on the substrate, the encapsulation layer including a first inorganic layer, an organic layer on the first inorganic layer and a second inorganic layer on the organic layer;
- a pixel array layer disposed on the substrate, and having a light emitting layer;
- a through-hole arranged inside the display area and encircled by the plurality of pixels, the through-hole penetrating the substrate and the pixel array layer including the light emitting layer;
- an inner dam surrounding the through-hole;
- and
- a hole-trench surrounding the inner dam,
- wherein the hole-trench includes:
- a bottom surface defined at a position recessed at a certain depth from an upper surface of the substrate;
- an upper surface defined at a bottom surface of the inner dam;
- and
- a sidewall for connecting the bottom surface of the hole-trench with the upper surface of the hole-trench,
- wherein the first inorganic layer is configured to be deposited on the upper surface, the sidewall and the bottom surface, and to cover the inner dam,
- wherein the light emitting layer is arranged on the bottom surface of the hole-trench and the upper surface of the hole-trench, except for the sidewall of the hole-trench, so that the hole-trench includes a remaining interior portion that excludes the light emitting layer and the first inorganic layer,
- wherein the organic layer is disposed in the hole-trench to fill-in the remaining interior portion of the hole-trench, and to be in contact with a portion of an inner wall of the inner dam, and
- wherein the second inorganic layer is configured to be deposited on the organic layer, and to be in contact with the first inorganic layer on an upper surface and an outer sidewall of the inner dam.
13 more elements
Dependencies are inferred from the claim text.