Lens Module Voice Coil Motor Rigid-Flex Circuit Board Connection
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Solution Overview
Problem
The existing zoom lens modules face issues with unreliable electrical connections between the voice coil motor and the circuit board due to the increased distance caused by the bracket, leading to inefficiencies and potential failures in auto-focusing mechanisms.
Innovation Solution
The implementation of a rigid-flex circuit board with a conductive supporting block and pins on the voice coil motor, which are electrically connected through solder blocks, ensures a stable and reliable electrical connection despite the increased distance between the circuit board and the voice coil motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a bracket is used to increase the distance between the voice coil motor and the circuit board, then the structural stability is improved, but the electrical connection reliability deteriorates
Solution Approach 1:
A rigid-flex circuit board is introduced as an intermediary component between the voice coil motor and the circuit board. This rigid-flex circuit board serves dual functions: it provides mechanical support and structural stability while simultaneously establishing reliable electrical connections through its conductive properties, thus resolving the contradiction between structural stability and electrical connection reliability
Solution Approach 2:
The patent changes the physical state and properties of the circuit board by using a rigid-flex configuration. The rigid-flex circuit board combines the mechanical strength of rigid boards with the flexibility and electrical conductivity of flexible circuits, allowing it to maintain both structural integrity and electrical reliability over increased distances
2Length of stationary object
If the distance between the voice coil motor and the circuit board is increased, then the structural stability is improved, but the electrical connection reliability deteriorates
Solution Approach 1:
The rigid-flex circuit board acts as a mediator that spans the increased distance between the voice coil motor and the circuit board. Its flexible nature allows it to accommodate the longer distance while maintaining electrical conductivity, thus preserving electrical connection reliability despite the increased separation
Solution Approach 2:
By changing to a rigid-flex circuit board configuration, the patent enables the electrical connection to maintain reliability over increased distances. The flexible portion can extend further while maintaining electrical integrity, effectively decoupling the electrical connection reliability from the distance constraint
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 solution enhances the reliability of electrical connections, improves the efficiency of the lens module's auto-focusing capabilities, and reduces production costs by maintaining the original design of the voice coil motor.
Implementation Method 1
a voice coil motor, and a lens, and the voice coil motor pushes and pulls the lens to achieve auto-focusing
Implementation Method 2
The rigid-flex circuit board with a conductive supporting block and pins on the voice coil motor, which are electrically connected through solder blocks, ensures a stable and reliable electrical connection
Data Source
AI summary
A lens module includes a lens assembly, a voice coil motor, a bracket, a circuit board, and a solder block. The voice coil motor includes a pin. The lens assembly is received in the voice coil motor. The bracket is disposed on the voice coil motor. The pin is extending into the recessed area. The bracket is sandwiched between the voice coil motor and the circuit board. The circuit board includes conductive supporting blocks facing the voice coil motor. The conductive supporting blocks are disposed in the recessed area. And one pin and one conductive supporting block are electrically connected by the solder block. The present disclosure also provides an electronic device including the lens module.