Wide angle diffuser having a plurality of microlenses and a plurality of prisms having a truncated pyramid shape and LCD employing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJee-hong Min, Moon-gyu Lee
Life of this patent
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Abstract
Provided is a wide angle diffuser including a plate-shaped body, a plurality of microlenses, and a plurality of prisms. The plate-shaped body has an incident surface on which light is incident and an exit surface through which light is emitted form the plate-shaped body. The microlenses and the prisms are respectively disposed on one of the incident surface and the exit surface. Also provided is a liquid crystal display including a liquid crystal panel, a backlight unit, provided on a rear surface of the liquid crystal panel, which emits collimated light to the liquid crystal panel, and the wide angle diffuser diffusing light passing through the liquid crystal panel.
Claims16
A wide angle diffuser comprising:
- a plate-shaped body comprising an incident surface on which light is incident and an exit surface through which light is emitted from the plate-shaped body, wherein the plate-shaped body has a uniform thickness;
- a plurality of microlenses disposed on one of the incident surface and the exit surface, wherein the plurality of microlenses comprise microlenses of two or more different sizes;
- and
- a plurality of prisms which diffuse light, disposed on the one of the incident surface and the exit surface on which the plurality of microlenses is not disposed, wherein the plurality of prisms comprise two or more prisms having a truncated pyramid shape different from each other and at least one prism having a pyramid shape.
A liquid crystal display comprising:
- a liquid crystal panel;
- a backlight unit, disposed on a rear surface of the liquid crystal panel, which emits collimated light to the liquid crystal panel;
- and
- a wide angle diffuser which diffuses light incident thereon from the liquid crystal panel,
- wherein the wide angle diffuser comprises:
- a plate-shaped body comprising an incident surface on which light is incident and an exit surface through which light is emitted from the plate-shaped body, wherein the plate-shaped body has a uniform thickness,
- a plurality of microlenses disposed on one of the incident surface and the exit surface, wherein the plurality of microlenses comprise microlenses of two or more different sizes, and
- a plurality of prisms, which diffuse light passing therethrough, disposed on the one of the incident surface and the exit surface on which the plurality of microlenses is not disposed, wherein the plurality of prisms comprise two or more prisms having a truncated pyramid shape different from each other and at least one prism having a pyramid shape.
Dependencies are inferred from the claim text.