Patent ID: 8958022
Filing Date: 2015-02-17
Classification: G02B

Abstract:
1. A liquid crystal display device, comprising: a main frame having a rectangular ring shape; a reflecting plate on the main frame; a light guide plate on the reflecting plate; a light emitting diode (LED) assembly along at least one side of the main frame, the LED assembly having a plurality of LEDs and an LED printed circuit board (PCB), the LED PCB including a first portion having the plurality of LEDs thereon and a second portion perpendicular to the first portion; an LED housing contacting the LED PCB; a plurality of optical sheets on the light guide plate; a liquid crystal panel on the plurality of optical sheets; a bottom frame under the reflecting plate, the bottom frame including a horizontal plate contacting the reflecting plate and a sidewall perpendicular to the horizontal plate, wherein the LED housing directly contacts the sidewall for transmitting a heat from the LED PCB to the sidewall; and a top frame covering a front edge portion of the liquid crystal panel, the top frame, the main frame and the bottom frame coupled to each other, wherein the LED housing includes only a single vertical portion and a horizontal portion perpendicular to and extending from the vertical portion, wherein the single vertical portion of the LED housing directly contacts the first portion of the LED PCB and the sidewall of the bottom frame, wherein the horizontal portion of the LED housing directly contacts the second portion of the LED PCB and the horizontal plate of the bottom frame, wherein the first portion of the LED PCB includes a base layer directly contacting the LED housing, an insulating layer directly on the base layer, and a conductive layer on the insulating layer, and the second portion of the LED PCB includes only the base layer, and wherein a contact area between the second portion of the LED PCB and the horizontal portion of the LED housing is greater than a contact area between the first portion of the LED PCB and the vertical portion of the LED housing.