Light source module, display apparatus and method for driving light source module

摘要

A light source module adapted to provide a first illumination beam to a display apparatus is provided. The display apparatus includes a display panel for displaying a 2D/3D image. The light source module includes a first wedge-shaped light guide plate, a first light emitting device, a second light emitting device, and a light source driving module. The first wedge-shaped light guide plate has a first and second light incident surfaces and an optical grating pattern. The first light emitting device and the second light emitting device are respectively disposed beside the first light incident surface and the second light incident surface. In a 2D/3D image display mode, the light source driving module controls to turn on the first/second light emitting device for providing the first illumination beam to the first wedge-shaped light guide plate. A method for driving the display apparatus is also provided.

主权项

1. A light source module, adapted to provide a first illumination beam to a display apparatus, wherein the display apparatus comprises a display panel configured to display a two-dimensional image or a three-dimensional image, and the light source module comprising:
a first wedge-shaped light guide plate, having a first light incident surface and a second light incident surface opposite to the first light incident surface, wherein the first wedge-shaped light guide plate further comprises an optical grating pattern, the optical grating pattern is formed on a surface of the first wedge-shaped light guide plate and functions as a parallax bather, and the surface is connected to the first light incident surface and the second light incident surface; a first light emitting device, disposed beside the first light incident surface of the first wedge-shaped light guide plate; a second light emitting device, disposed beside the second light incident surface of the first wedge-shaped light guide plate; and a light source driving module, adapted to turn on the first light emitting device for providing the first illumination beam to the first wedge-shaped light guide plate in a two-dimensional image display mode, and to turn on only the second light emitting device for providing the first illumination beam to the first wedge-shaped light guide plate in a three-dimensional image display mode, wherein widths of the first light incident surface and the second light incident surface of the first wedge-shaped light guide plate along a specific direction are respectively SL1 and SS1, wherein the width SL1 is greater than the width SS1.