Backlight unit and display device having the same

A backlight unit and a display device having the same includes a light source (402) installed at a position, separated from the central region of a light diffuser (13) diffusing light by a predetermined distance, to radiate light to the light diffuser, and a lens unit (404) installed between the lig...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Ahn, Young Man, Lee, Young Chol, Jang, Nae Won, Cho, Byoung Jin, Choi, Hyeong Sik, Ahn, Joon Seok
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MECHANICAL ENGINEERING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	A backlight unit and a display device having the same includes a light source (402) installed at a position, separated from the central region of a light diffuser (13) diffusing light by a predetermined distance, to radiate light to the light diffuser, and a lens unit (404) installed between the light diffuser (13) and the light source (402) and having a surface facing the light source, the surface of the lens unit facing the light source including reflective areas (406) which are coated with a reflective material and reflect a part of light radiated from the light source, and a transmissive area (410) transmitting the other part of light radiated from the light source. The display device may eliminate generation of a dark region on a display panel due to the shadow of the backlight unit through improvement of the structure of the lens unit.