The present invention provides a slim bezel liquid crystal display device, which includes a rear enclosure, a front enclosure mating the rear enclosure, and a liquid crystal display module arranged inside the rear enclosure. The rear enclosure forms a retention plate. The retention plate functions to retain a lower end of the liquid crystal display module so as to fix the liquid crystal display module in the rear enclosure. The slim bezel liquid crystal display device uses an inverted L-shaped retention plate mounted at a lower end portion of a rear enclosure to retain a liquid crystal display module in position so as to fix the liquid crystal display module in the rear enclosure. The structure is simple and assembling is easy so as to effectively achieve bezel slimming and device thinning of a liquid crystal display device.