Optical diaphragm, light guide plate, combination method thereof and backlight module

• Main Authors: ZHANG LIANG, XU YIZHEN, WU XINGJI
• Format: Patent
• Language: Chinese; English
• Published: 21.11.2012
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

The invention discloses an optical diaphragm, a light guide plate, a combination method of the optical diaphragm and the light guide plate, and a backlight module provided with the optical diaphragm and the light guide plate, and relates to the field of display, aiming at solving the displacement or the wrinkle of the diaphragm caused by the overlarge size of the diaphragm, the bad assembly, the heating deformation and the vibration, effectively reducing the probability of the bad screen display quality, and improving the display effect. Some parts or all parts of at least one of surfaces of the optical diaphragm are provided with magnetic diaphragm layers; and the magnetic diaphragm layers have the magnetism, and are made from transparent magnetic materials. The surface of the light guide plate is further provided with the magnetic diaphragm layer. The combination method of the optical diaphragm and the light guide plate in the backlight module comprises the following steps of: respectively arranging the mag