Backlight System Back Frame Segmentation and Adhesive Support
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Solution Overview
Problem
Conventional backlight systems for liquid crystal display devices have high material and mold costs due to complex back frame structures, and the reflector plate often collapses during assembly, affecting optic quality.
Innovation Solution
A backlight system with a back frame composed of multiple primary assembling pieces forming a main frame structure, using UV adhesive spots between the reflector plate and light guide plate to provide a lifting effect and prevent collapse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a unitary back frame is used, then the structure is simple, but the material cost and mold cost are high
Solution Approach 1:
The back frame is divided into multiple assembly pieces instead of using a single unitary structure. This segmentation allows each piece to be manufactured separately with smaller, less complex molds, reducing both material usage per mold and overall mold costs while maintaining the complete frame structure through assembly.
2Strength
If the back frame is stamped to form bumps or reinforcing ribs, then the structural strength is improved, but the surface becomes non-flat causing reflector plate collapse
Solution Approach 1:
Instead of stamping the entire back frame surface with bumps or ribs, the invention applies local reinforcement only at specific positions where structural strength is needed. The reflector plate is supported at discrete locations rather than requiring a completely non-flat surface, thus maintaining optical quality while providing necessary structural support.
3Device complexity
If the reflector plate is positioned in suspended condition, then the back frame structure is simplified, but the reflector plate collapses during assembly
Solution Approach 1:
The back frame includes pre-formed support structures such as bumps or reinforcing ribs that are created during the manufacturing process. These support features are built into the frame before assembly, providing immediate structural support for the reflector plate and preventing collapse during the assembly process without requiring complex additional support mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design reduces material and mold costs while enhancing the structural integrity of the backlight system, improving optic quality by preventing reflector plate collapse and ensuring stable bonding between components.
Implementation Method 1
the adhesive spots are UV adhesive spots
Data Source
AI summary
The present invention provides a backlight system, which includes a reflector plate, a light guide plate, and a back frame. The reflector plate and the light guide plate are stacked on the back frame and the back frame carries the light guide plate and the reflector plate. The back frame includes at least two primary assembling pieces, the at least two primary assembling pieces being joined to form a main frame structure of the back frame; and lifting adhesive spots are formed between the reflector plate and the light guide plate. The backlight system of the present invention has a back frame having a simple structure, saves material for the back frame, and reduces the cost of the back frame so as to lower down the cost of flat panel display device. Further, the present invention arranges lifting adhesive spots between the reflector plate and the light guide plate so as to provide a lifting effect on the reflector plate and bond the reflector plate to the light guide plate, thereby alleviating the problem that easy collapse of the reflector plate occurring after assembling leads to poor quality of reflection and causes poor backlighting.