Liquid Crystal Polyester Resin Composition for Camera Module Reliability
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Solution Overview
Problem
Liquid crystal polyester resin compositions are prone to weak weld lines, fibrillization, and dust generation, which compromise the mechanical integrity and optical performance of electronic components, especially in camera modules.
Innovation Solution
A liquid crystal polyester resin composition incorporating a liquid crystal polyester resin, a polyphenylene sulfide resin, carbon-based fillers, and inorganic fillers such as glass powder, which enhances mechanical properties, dimensional stability, and resistance to dust generation and fibril formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If liquid crystal polyester resin composition is injection molded into complex shape, then moldability is improved, but weld lines are formed at interface where resin flows meet
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating polyphenylene sulfide resin (1-15 wt%) and specific fillers (carbon-based 1-5 wt%, inorganic 5-30 wt%) into the liquid crystal polyester resin system. This compositional modification alters the rheological and mechanical properties of the resin, enabling it to maintain adequate flow characteristics for complex molding while significantly improving weld line impact strength to exceed 20 J/m.
2Strength
If liquid crystal polyester resin composition is used for electronic components, then mechanical strength is improved, but fibrillization occurs during ultrasonic cleaning or friction
Solution Approach 1:
The patent creates a composite material system combining liquid crystal polyester resin with polyphenylene sulfide resin and a specific mixture of carbon-based and inorganic fillers. This composite structure synergistically enhances mechanical strength while the filler network and interfacial bonding suppress fibrillization during ultrasonic cleaning and friction, preventing dust generation from peeled surface fibrils.
3Shape
If resin flows meet during molding process, then complex shape is achieved, but weak weld lines are formed at interface
Solution Approach 1:
The patent modifies the resin composition parameters by adding polyphenylene sulfide resin (1-15 wt%) and optimized filler content (carbon-based 1-5 wt%, inorganic 5-30 wt%), which changes the flow and bonding characteristics during molding. This enables the formation of complex shapes while ensuring weld line impact strength exceeds 20 J/m through improved interfacial adhesion and reduced flow resistance.
Data Source
AI summary
A liquid crystal polyester resin composition, a molded article, and an electronic component material including the same are disclosed. The liquid crystal polyester resin composition has good mechanical properties, good weld line impact strength, high dimensional stability, and resistance to dust generation.