Display Backlight Supporter for Direct PCB-to-Chassis Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices face challenges with complex manufacturing processes and reduced reliability due to the need for detouring printed circuit wiring to the edge of the board, which complicates electrical connections and makes them vulnerable to vibrations.
Innovation Solution
A display device design that includes a supporter extending between the board and the rear chassis, which is electrically conductive, allowing direct electrical connection of the printed circuit wiring without the need for a detour, thereby simplifying the process and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If printed circuit wiring is detoured to the edge of the board for electrical connection, then electrical connectivity is achieved, but manufacturing process complexity increases and reliability against vibrations decreases
Solution Approach 1:
The patent introduces a conductive adhesive tape as an intermediary component between the light source module and the rear chassis. This tape provides both electrical connectivity and mechanical support, eliminating the need for complex detoured wiring while improving vibration resistance. The adhesive tape acts as a mediator that simultaneously addresses electrical and mechanical requirements.
Solution Approach 2:
The patent combines the electrical connection function and the mechanical support function into a single integrated structure. The conductive adhesive tape merges the roles of electrical conductor and structural support element, simplifying the overall design and reducing manufacturing complexity while improving reliability.
2Ease of manufacture
If printed circuit wiring is detoured to the edge of the board, then electrical connection is established, but the manufacturing process becomes more complex with additional steps
Solution Approach 1:
The conductive adhesive tape serves as an intermediary that simplifies manufacturing by providing a pre-fabricated electrical connection solution. This eliminates the need for complex wiring routing and additional assembly steps, making the manufacturing process easier while maintaining connection reliability.
Solution Approach 2:
The conductive adhesive tape is applied in a self-aligning manner to the light source module, eliminating the need for precise manual wiring routing. The tape's adhesive properties enable self-positioning, reducing manufacturing complexity and improving connection reliability simultaneously.
3Reliability
If chip on film bonded with anisotropic conductive film is used for electrical connection, then electrical connectivity is achieved, but reliability against vibrations deteriorates
Solution Approach 1:
The patent replaces the COF-ACF bonded structure with a conductive adhesive tape intermediary. This tape provides a more robust mechanical bond that better resists vibrations while maintaining electrical connectivity. The adhesive tape's flexible yet strong bonding characteristics overcome the vibration sensitivity of the COF-ACF interface.
Solution Approach 2:
The patent changes the physical and mechanical parameters of the connection structure by using adhesive bonding instead of film bonding. This parameter change increases the connection's resistance to vibrations while maintaining electrical conductivity, thereby improving reliability without significantly increasing complexity.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Disclosed is a display device comprising: a display panel; a light source module provided at the back of the display panel and comprising a substrate and a light source provided on the rear side of the substrate; a rear chassis provided to cover the rear side of the light source module; and a supporter extending between the substrate and the rear chassis and being electrically conductive.