Light Guide Plate Protecting Frame Narrowing LCD Bezel Width
Solution Overview
Problem
Conventional liquid crystal display modules have a frame that cannot be further reduced due to the combined frame of the liquid crystal display panel and the backlight module, limiting the achievement of a narrow frame in liquid crystal display products.
Innovation Solution
A light guide plate with a protecting frame comprising a vertical and horizontal wall is introduced, where the horizontal wall is attached to the light-exiting surface and the vertical wall to the side surfaces of the light-guide-plate body, allowing for a fixed and protected position for the liquid crystal display panel, and enabling the narrowing of the backlight module frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a conventional backlight module structure with separate frame components is used, then the structural stability is maintained, but the frame width cannot be reduced further
Solution Approach 1:
The patent combines the backlight module frame and the light guide plate into a single integrated structure. The light guide plate serves dual functions: as an optical component for light distribution and as a structural frame component. This merging eliminates the need for separate frame components, thereby reducing the overall frame width while maintaining structural stability.
Solution Approach 2:
The light guide plate is designed to perform multiple functions simultaneously: it guides and distributes light from the LED source across the display area, provides structural support as a frame component, and maintains the spatial relationship between optical elements. This multi-functionality allows the frame width to be reduced without compromising structural integrity.
2Volume of moving object
If the frame is narrowed by integrating the light guide plate and backlight module, then the compactness is improved, but the positioning stability of the liquid crystal display panel must be maintained
Solution Approach 1:
The integration of the light guide plate and backlight module into a compact unified structure reduces the overall volume while the light guide plate itself serves as the positioning reference for the liquid crystal display panel, maintaining positioning stability within the reduced space.
Solution Approach 2:
The light guide plate acts as an intermediary component that provides positioning features (such as the first positioning groove and positioning protrusions) for the liquid crystal display panel. This intermediary structure enables stable panel positioning within the compact integrated backlight module without requiring separate frame components.
Data Source
AI summary
A light guide plate, a backlight module, a liquid crystal display module and a liquid crystal display device are disclosed. The light guide plate comprises a light-guide-plate body and a protecting frame. The light-guide-plate body comprises a light-exiting surface and a light-transmitting surface that are opposite to each other, and a plurality of side surfaces connecting the light-exiting surface with the light-transmitting surface. The protecting frame comprises a vertical wall and a horizontal wall extending from the vertical wall to an inner side of the protecting frame. The horizontal wall comprises a first contact surface which is attached to an edge of the light-exiting surface. The vertical wall comprises a second contact surface which is connected with the first contact surface, and the second contact surface is attached to side surfaces of the light-guide-plate body.