Display device
AssigneeJapan Display Inc.
InventorsYudai Numata, Kentaro Okuyama
Life of this patent
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Abstract
According to one embodiment, a display device includes a display panel, a light emitting element, a light guide layer and a first optical layer. The display panel includes a first substrate, a second substrate opposed to the first substrate, and a polymer dispersed liquid crystal layer which is held between the first substrate and the second substrate and contains a polymer and a liquid crystal molecule. The light guide layer has a first surface opposed to the display panel, and an edge opposed to the light emitting element. The first optical layer is located between the display panel and the light guide layer. A refractive index of the first optical layer is lower than a refractive index of the light guide layer.
Claims6
A display device comprising:
- a display panel including a first substrate, a second substrate which is opposed to the first substrate, polymers and liquid crystal molecules which are between the first substrate and the second substrate;
- a light emitting element;
- a light guide layer having a first surface which is opposed to the display panel, and a first side which is at a side of the light emitting element and a second side which is at the other side of the light emitting element;
- a first optical layer located between the first surface and the light guide layer and extending from the first side to the second side;
- and
- an adhesive layer located between the display panel and the light guide layer,
- wherein
- a refractive index of the first optical layer is lower than a refractive index of the light guide layer,
- the first substrate is located between the second substrate and the light guide layer,
- the adhesive layer contacts the first substrate and the light guide layer,
- the adhesive layer is located between the first substrate and the first optical layer,
- a refractive index of the adhesive layer is higher than the refractive index of the first optical layer, and is equal to a refractive index of the first substrate and the refractive index of the light guide layer, and
- an area of the first optical layer decreases as a distance from the light emitting element increases.
A display device comprising:
- a display panel including a first substrate, a second substrate which is opposed to the first substrate, polymers and liquid crystal molecules which are between the first substrate and the second substrate;
- a light emitting element;
- a light guide layer having a first surface which is opposed to the display panel, and a first side which is at a side of the light emitting element and a second side which is at the other side of the light emitting element;
- a first optical layer located between the first surface and the light guide layer and extending from the first side to the second side;
- and
- an adhesive layer located between the display panel and the light guide layer,
- wherein
- a refractive index of the first optical layer is lower than a refractive index of the light guide layer,
- the first substrate is located between the second substrate and the light guide layer,
- the adhesive layer contacts the first substrate and the light guide layer,
- the adhesive layer is located between the first substrate and the first optical layer,
- a refractive index of the adhesive layer is higher than the refractive index of the first optical layer, and is equal to a refractive index of the first substrate and the refractive index of the light guide layer,
- the first optical layer includes a first side opening part and a second side opening part, and
- the first side opening part is smaller than the second side opening part.
Dependencies are inferred from the claim text.