Positioning Device for Light Guide Plate and Backlight Module

摘要

The present invention provides a positioning device for light guide plate and the backlight module. The positioning device for light guide plate includes a backboard and a spring member which can be deformed when exerted with external force, and resumes to its original position when the external force is relieved. The spring member is arranged adjacent to the incident surface of the light guide plate, and includes a connector attached to the backboard, and a positioning hand having a fixing end and a free end. The fixing end is secured to the connector, and the free end abuts against to the sidewall of the light guide plate so as to hold up the light guide plate. The spring member is set to have a certain elastic modulus. When the light guide plate expands under heat or other reasons, the spring member will provide a buffer zone for the light guide plate and deform in accordance with the light guide plate which is therefore prevented from being warped. Once the light guide plate resumes to its original position, then the spring member resumes also back to its original position. As a result, the light guide plate is constantly kept in position by the positioning device made in accordance with the present invention. Accordingly, the coupling distance between the light guide plate and the light source can be ensured. This will increase the light quality of the backlight module. In addition, the positioning device can ensure reliable and durable positioning to the light guide plate.

主权项

1. A positioning device for light guide plate which includes an incident surface, an light exiting surface adjoining the incident surface, and a sidewall opposite to the incident surface, wherein the positioning device of the light guide plate is configured by a backboard and a spring member mounted onto the backboard, wherein the light guide plate is securely positioned onto the backboard by the spring member which is disposed adjacent to the sidewall of the light guide plate, including
a connector secured to the backboard; and a positioning hand having a fixing end interconnected to the connector, and a free end adapted to abut against the sidewall of the light guide plate so as to create an interaction therebetween.