Silicone Rubber Socket Composite for Antistatic Fine-Pitch Testing
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Solution Overview
Problem
Conventional silicone rubber sockets used for semiconductor testing are prone to static electricity and deformation, leading to potential malfunction and defects in semiconductor devices due to reduced terminal pitch.
Innovation Solution
A composite material for silicone rubber sockets is produced by mixing liquid silicone with a heterogeneous powder composed of metal and polymer or ceramic powders, optionally with additives, to enhance mechanical and antistatic properties, and includes conductive pores filled with metals like Au or Ag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional silicone rubber sockets are used, then the socket structure is simple and easy to manufacture, but the socket generates static electricity and deforms due to repeated use
Solution Approach 1:
The patent applies composite materials by combining silicone rubber base material with heterogeneous powder particles (metal powder, polymer powder, or ceramic powder) to create a composite material that maintains the flexibility and moldability of silicone rubber while adding mechanical strength and antistatic properties through the powder components
Solution Approach 2:
The patent changes the material parameters by controlling the particle size distribution, composition ratios, and surface treatment of the powder particles to optimize both the mechanical properties and antistatic performance of the composite material without compromising manufacturability
2Manufacturing precision
If the terminal pitch of semiconductor devices is reduced, then the testing capability is improved, but the socket becomes more susceptible to static electricity and deformation
Solution Approach 1:
The heterogeneous composite powder provides enhanced mechanical strength to support finer terminal pitches while the metal powder component dissipates static electricity, enabling reliable testing of high-precision semiconductor devices with reduced terminal pitch
Solution Approach 2:
The patent applies local quality by creating regions with different powder concentrations and types within the composite material to provide localized mechanical support and antistatic properties where needed for high-precision terminal contacts
3Reliability
If gold-coated metal particles are used in silicone rubber socket, then the electrical conductivity is improved, but the powder particles deform and sag due to repeated use
Solution Approach 1:
The patent combines metal powder for conductivity with polymer or ceramic powder for structural stability, creating a composite where the powder mixture maintains its shape and position during repeated use while still providing the necessary electrical conductivity through the metal component
Solution Approach 2:
The patent optimizes particle size parameters and surface treatment parameters of the powder components to prevent particle deformation and sagging while maintaining electrical conductivity, using controlled particle morphology and surface properties
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
The composite material improves mechanical properties and thermal conductivity, reducing static electricity-induced defects and enhancing durability, thereby increasing reliability and reducing costs in semiconductor testing.
Implementation Method 1
The composite material improves mechanical properties and thermal conductivity
Implementation Method 2
the mixture may further include a compound represented by the following Formula 1 to improve the antistatic performance of the molded body
Data Source
AI summary
Proposed is a method for producing an insulating composite material for a silicone rubber socket, in which the method includes a step of producing a molded body of a mixture of liquid silicone and a heterogeneous composite powder composited from (i) metal powder and (ii) polymer or ceramic powder. An insulating composite material for a silicone rubber socket, produced by the method, is also proposed. Further proposed is a silicone rubber socket manufacturing method including the steps of producing a sheet-shaped molded body from a mixture including liquid silicone and a heterogeneous composite powder composited from (i) a metal powder and (ii) a polymer or ceramic powder and (b) forming a plurality of pores extending through the sheet-shaped molded body in a thickness direction and filling the pores with a conductive material. In addition, a silicone rubber socket manufactured by the method is also proposed.