DIRECT-TYPE BACK LIGHT MODULE, CAPABLE OF OBTAINING UNIFORM LIGHT FROM AN UPPER SURFACE OF A DIFFUSER PLATE BY DIFFUSING THE LIGHT INCIDENT ON THE DIFFUSER PLATE AFTER APPLYING INK LAYERS TO THE UPPER SURFACE AND A LOWER SURFACE OF THE DIFFUSER PLATE

摘要

PURPOSE: A direct-type back light module is provided to diffuse a light by including plural diffusive granules within ink layers, and to make a light incident on a diffuser plate have a high uniformity by the diffusion of the ink layers, thereby improving visual quality of an LCD device by outputting the light having excellent uniformity. CONSTITUTION: A direct-type back light module(50) comprises as follows. A diffuser plate(51) includes an upper surface and a lower surface. Ink layers(56a,56b) are formed on the upper surface and the lower surface of the diffuser plate(51). The ink layers(56a,56b) consist of plural diffusive granules and floodlight resins. Plural lamps(52) are distributed on the lower surface of the diffuser plate(51), and provide light sources. A reflective part(53) is located under the lamps(52), while a frame(54) covers lower surfaces of the reflective part(53), the lamps(52), and the diffuser plate(51) to protect inner parts of the back light module(50).