Backlight unit
AssigneeSeoul Semiconductor Co., Ltd.
InventorChung Hoon Lee
Life of this patent
Estimating the term…
Abstract
The present invention relates to a backlight unit for use in a display device. The backlight unit includes a circuit board, at least one light-emitting diode chip mounted on the circuit board, a plurality of reflection members arranged on the upper part of the light-emitting diode chip, and a light diffusing member. The light diffusing member has an incident surface on which light enters and an emitting surface from which light is emitted. The light diffusing member is arranged on the upper part of the circuit board. The plurality of reflection members are stacked on each other and reflect a part of light emitted from the upper surface of the light-emitting diode chip.
Claims20
A light emitting module, comprising:
- a circuit board;
- a light emitter disposed on the circuit board and configured to emit a primary light;
- a reflector disposed on the circuit board;
- a light guide disposed on the circuit board and configured to cover a surface of the light emitter, the light guide including a region having a curved surface that is different from a spherical shape;
- and
- a sealing layer disposed between the light emitter and the light guide and including a light transmitting material, the sealing layer being in contact with the reflector and the light emitter and configured to cover upper surfaces of the reflector and the light emitter,
- wherein the light emitter comprises:
- a substrate;
- a light emitting layer disposed on the substrate and configured to emit the primary light;
- a first electrode pad electrically connected to a first conductivity type semiconductor layer of the light emitting layer;
- and
- a second electrode pad electrically connected to a second conductivity type semiconductor layer of the light emitting layer,
- wherein the sealing layer is disposed on a sidewall of the substrate and a sidewall of the light emitting layer.
A backlight unit comprising:
- a circuit board;
- a light emitter disposed on the circuit board and configured to emit a primary light;
- a reflector disposed on the circuit board;
- a wavelength converter disposed on the circuit board and configured to convert the primary light;
- a light guide disposed on the circuit board and configured to cover the reflector, the light guide including a region having a curved surface;
- and
- a sealing layer disposed between the light emitter and the light guide and covering upper surfaces of the reflector and the light emitter,
- wherein the light emitter comprises:
- a substrate;
- a light emitting layer disposed on the substrate and configured to emit the primary light;
- a first electrode pad electrically connected to a first conductivity type semiconductor layer of the light emitting layer;
- and
- a second electrode pad electrically connected to a second conductivity type semiconductor layer of the light emitting layer,
- wherein the sealing layer is disposed on a sidewall of the substrate and a sidewall of the light emitting layer.
A light emitting module, comprising:
- a circuit board;
- a light emitter disposed on the circuit board and configured to emit a primary light;
- a reflector disposed on the circuit board;
- a light guide disposed on the circuit board and configured to cover a side of the light emitter, the light guide including a region having an inclined surface;
- and
- a sealing layer disposed on the light emitter,
- wherein the light emitter comprises:
- a substrate;
- a light emitting layer disposed on the substrate;
- a first electrode pad electrically connected to a first conductivity type semiconductor layer of the light emitting layer;
- and
- a second electrode pad electrically connected to a second conductivity type semiconductor layer of the light emitting layer;
- wherein the sealing layer is disposed between the light emitter and the light guide, and
- wherein the sealing layer is disposed on a sidewall of the substrate and a sidewall of the light emitting layer.
Dependencies are inferred from the claim text.