LED Light guide plate and backlight unit using micro LED local dimming

摘要

The present invention relates to a light guide plate and a backlight unit using micro LED local dimming, wherein the backlight unit using micro LED local dimming includes: a board on which micro LEDs are flatly arranged at predetermined intervals so that a light source can spread upward; A reflective sheet positioned on the upper surface of the board and formed such that a hole is perforated in a section corresponding to the micro LED to allow a light source to pass through, and a light source is blocked in the rest of the section except for a section corresponding to the micro LED; A light guide plate positioned above the reflective sheet and processing a first type of irregularities in a portion adjacent to the hole to refract the light source, and processing the second type of irregularities on the opposite surface to further diffuse the refracted light source Includes. In the present invention, heat is generated as the brightness of the light source is brighter, and the reverse use of this is reversely used to reduce the size of the light source, and to minimize the area of the light source to apply the side light source as the entire light source of the bottom plate, but reduce the area of the light source while losing brightness. While minimizing, the difference in shade can be maximized to some areas.