Light guide unit having shielding portion, backlight module using the same and manufacturing method of light guide unit

• Main Authors: Jang, Ha Young, Kim, Byeong Cheol, Min, Jee Hong, Kim, Young Il, Yim, Ju Hyuk, Hong, Ji Yeon, Oh, Se Jin
• Format: Patent
• Language: English
• Published: 05.04.2022
• 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 provides a backlight module comprising a light emitting unit including a light source and a light guide plate transmitting light from the light source; a light guide unit accumulatively placed on the top of the light emitting unit and transmitting the light to the upper part of the light guide unit; a mold frame containing the light emitting unit and the light guide unit and having a space between the side of the light guide unit and the mold frame; and a shielding portion formed at the side of the light guide unit to prevent light leakage transmitting from the side of the light guide unit to the outside of the light guide unit.