Patent ID: 7585099
Filing Date: 2009-09-08
Classification: G02B,G02F

Abstract:
1. A backlight unit for a liquid crystal display device, comprising: a lamp; a light guide plate adjacent to the lamp; a reflector under the light guide plate; a lamp housing covering the lamp and including first and second portions, the lamp housing being combined with edges of the light guide plate and the reflector, the first portion of the lamp housing being disposed under the lamp, the second portion of the lamp housing being disposed under the light guide plate; a bottom case covering the lamp housing and the reflector and including first and second portion, the first portion of the bottom case is closer to the reflector than the second portion of the bottom case such that the bottom case has a step difference of a first height; and a housing pad under the lamp housing, the housing pad overlapping the second portion of the lamp housing, wherein the housing pad contacts and pushes up the second portion of the lamp housing such that the second portion of the lamp housing has a greater height from a reference line than the first portion of the lamp housing, wherein the housing pad is disposed between the second portion of the lamp housing and the bottom case such that the second portion of the lamp housing has a greater height from a surface of the bottom case than the first portion of the lamp housing, wherein the first portion of the bottom case contacts the reflector, and the housing pad is disposed at the second portion of the bottom case.