LCM Back Chassis with Segmented Walls for Cost Reduction
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Solution Overview
Problem
The high cost associated with manufacturing a wide variety of liquid crystal display modules in small quantities due to the need for frequent redesign and production of chassis components, which increases the cost of producing different-sized modules with varying optical distances between the light source and the liquid crystal panel.
Innovation Solution
A liquid crystal display module design that uses a back chassis with four independent wall members and a frame to support the liquid crystal panel, along with a bezel and optical film laminate, allowing for the reuse of the same extrusion die for different sizes, reducing the need for new dies and lowering production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If chassis components are newly designed and produced for each liquid crystal panel size or optical distance variation, then the liquid crystal display module can be customized to different specifications, but the manufacturing cost increases significantly due to frequent die production requirements
Solution Approach 1:
The chassis is divided into multiple standardized modules that can be reconfigured for different panel sizes. Instead of designing a completely new chassis for each application, the system uses segmented, pre-fabricated components that can be assembled in various configurations, eliminating the need for frequent die production while maintaining customization capability.
Solution Approach 2:
A universal chassis platform is created that can accommodate multiple liquid crystal panel sizes and optical distance requirements through standardized mounting interfaces and adjustable support structures. This single versatile design replaces the need for multiple specialized chassis designs, significantly reducing die production costs while maintaining adaptability to different specifications.
2Ease of manufacture
If a standardized chassis design is used across different liquid crystal display module sizes, then manufacturing cost decreases due to reduced die production requirements, but the ability to accommodate different optical distances and panel sizes is limited
Solution Approach 1:
The standardized chassis incorporates dynamic adjustment mechanisms such as adjustable support legs, movable mounting brackets, and reconfigurable structural elements. These features allow the fixed-cost chassis design to adapt to varying optical distances and panel sizes through mechanical adjustment rather than requiring new die production, thus maintaining both cost efficiency and versatility.
Data Source
AI summary
A liquid crystal display module includes: a liquid crystal panel; a back chassis having a bottom that supports a substrate, the substrate having a plurality of light sources; a frame having four independent wall members respectively extending in parallel to four sides of the liquid crystal panel, the frame supporting the liquid crystal panel; a bezel having four independent plate-like members disposed so as to surround the four sides of the liquid crystal panel and the four independent wall members; an optical film laminate disposed between the liquid crystal panel and the frame; a first reflective sheet opposed to the four independent wall members, and having a bottom face that has a plurality of apertures through which the plurality of light sources are respectively exposed; and four independent second reflective sheets disposed between the liquid crystal panel and the respective four independent wall members.