BACKLIGHT UNIT AND DISPLAY DEVICE INCLUDING THE SAME

• Main Authors: Kim, JunSik, Lee, JooHong, Min, WoongKi
• Format: Patent
• Language: English; French; German
• Published: 05.07.2017
• Subjects: 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 LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

The present invention relates to a backlight unit of a display device. The backlight unit is structured to have no light guide plate, and includes a reflecting plate (210), which is arranged on the inner surface of a cover bottom (310), and which has a sloping surface, and a light-collecting lens (129), which collects light from an edge light source portion (128). A light-absorbing pattern (410, 420, 430) is arranged on at least one of an optical sheet (250), a diffuser plate (240), and the reflecting plate (210) using such a configuration that the density of arrangement of the light-absorbing pattern (420, 430) is largest on a light-input portion and decreases towards an anti-light-input portion, or using such a configuration that the light-absorbing pattern (410) is formed only on a flat surface of the reflecting plate (210), near the light-input portion, thereby providing uniform light throughout the entire display panel.