BACKLIGHT STRUCTURE FOR LIQUID CRYSTAL DISPLAY DEVICE

• Main Author: SONG YOUNG KI
• Format: Patent
• Language: English
• Published: 15.02.2007
• 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; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; 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

PROBLEM TO BE SOLVED: To provide a backlight structure for liquid crystal display device capable of improving the quality of a screen by reflecting light emitted from respective LED light sources at least through one reflection structure and making the light of line light source form incident on a light guide plate. SOLUTION: The backlight structure for liquid crystal display device comprises: a large number of LED light sources; and the light guide plate which is disposed on one side of the large number of LED light sources and uniformly guides the light emitted from the large number of LED light sources, wherein a reflection structure having at least one reflection surface which is inclined at a specified angle so as to face the respective LED light sources is disposed, the light emitted from the respective LED light sources is reflected by the reflective surface, the light of line light source form is made incident on the light guide plate and, thereby obtaining such an effect as to prevent occurrence of the hot spot which brings about the quality damage of screen and the unevenness of screen brightness distribution. COPYRIGHT: (C)2007,JPO&INPIT