US 2023/0057744 A1Published application

Illumination device

AssigneeJapan Display Inc.

InventorYosuke NAKAMORI

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Abstract

According to one embodiment, an illumination device includes a first light emitting element, a second light emitting element, an overcoat layer covering the first and second light emitting elements, a first transparent block disposed on the overcoat layer and overlapping the first light emitting element, a second transparent block disposed on the overcoat layer and overlapping the second light emitting element, and an optical sheet group disposed on the first transparent block and the second transparent block. A first side surface of the first transparent block and a second side surface of the second transparent block face each other. An air layer is interposed between the first side surface and the second side surface.

Claims10

Dependent claims

An illumination device comprising:

a circuit board;
light emitting elements including a first light emitting element and a second light emitting element mounted on the circuit board;
an overcoat layer being transparent and covering the circuit board and the light emitting elements;
a first transparent block disposed on the overcoat layer and overlapping the first light emitting element;
a second transparent block disposed on the overcoat layer, adjacent to the first transparent block, and overlapping the second light emitting element;
and
an optical sheet group disposed on the first transparent block and the second transparent block,
wherein a first side surface of the first transparent block and a second side surface of the second transparent block face each other, and
an air layer is interposed between the first side surface and the second side surface.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/888,544Filed 16 Aug 2022
Priority: JP 2021-13402419 Aug 2021
Published: 23 Feb 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02F 1/133603
Direct backlight: with LEDs
G02B 6/0078
Arrangements of multiple light guides: side-by-side arrangements, e.g. for large area displays
G02F 1/133601
Illuminating devices: for spatial active dimming
G02F 1/133606
Direct backlight: including a specially adapted diffusing, scattering or light controlling members

Family

US 11,796,860 B2Related patent
US 2023/0057744 A1This patent

From the US filing history. Foreign family members aren’t listed.

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