Flexible Circuit Grounding for Slim Mobile Display Rigidity
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Solution Overview
Problem
Slim mobile terminals are vulnerable to static electricity and mechanical rigidity issues, particularly affecting LCDs, which are prone to image distortion and physical deformation due to limited ground area and reduced mechanical rigidity.
Innovation Solution
A display module and mobile terminal design incorporating a main circuitry supporting substrate with a ground, a flexible circuitry supporting substrate module having recessed conductive portions, and a conductive member using conductive tape and paste to ground the flexible circuitry supporting substrate and display module, enhancing mechanical rigidity and grounding area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the mobile terminal is made slim, then the terminal becomes more portable and convenient, but the ground area for LCD becomes insufficient and mechanical rigidity deteriorates
Solution Approach 1:
The invention transitions from a planar ground structure to a three-dimensional stepped structure with multiple levels. The first ground portion is positioned at a first level while the second ground portion is positioned at a second level different from the first level, creating vertical dimensionality that increases ground area without increasing the horizontal footprint or terminal thickness.
Solution Approach 2:
The invention nests multiple ground portions within the limited space of the mobile terminal. The first ground portion and second ground portion are arranged in a nested configuration where one is positioned above or beside the other in the vertical dimension, maximizing the use of available space within the slim terminal structure.
2Length of moving object
If the mobile terminal is made slim, then the terminal becomes more portable and convenient, but mechanical rigidity becomes vulnerable
Solution Approach 1:
The invention uses a composite structure combining conductive adhesive material with different ground portions positioned at different levels. The conductive adhesive material provides both electrical connection and mechanical bonding, while the multi-level ground structure adds structural rigidity. This composite approach simultaneously addresses electrical grounding and mechanical strength requirements in a slim terminal design.
3Area of stationary object
If the ground area of LCD is maximized, then static electricity influence is minimized, but the internal space of the terminal becomes more constrained
Solution Approach 1:
The invention resolves the space constraint by utilizing the vertical dimension within the terminal's internal volume. By positioning ground portions at different levels (first level and second level), the design increases effective ground area without proportionally increasing the horizontal footprint or overall terminal volume, thereby maximizing ground area within constrained internal space.
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 solution effectively minimizes static electricity influence and reinforces mechanical rigidity, protecting internal components like LCDs from distortion and external forces, ensuring a reliable user experience by maximizing the ground area and structural integrity within the limited space of mobile terminals.
Implementation Method 1
a conductive member connected to the flexible circuitry supporting substrate module to ground the flexible circuitry supporting substrate module and the display module
Data Source
AI summary
A display assembly having a display module to receive a display signal containing prescribed information, a main circuitry supporting substrate including a ground, a flexible circuitry supporting substrate module connected to the circuitry supporting substrate to process or transfer data for prescribed information from the circuit board to the display module, the flexible circuitry supporting substrate module having recessed conductive portions, and a conductive member connected to the flexible circuitry supporting substrate module to ground the flexible circuitry supporting substrate and the display module, the conductive member including conductive tape applied to the flexible circuitry supporting substrate module and conductive paste to connect recessed conductive portions of the flexible circuitry supporting substrate module to the conductive tape. The display assembly may be formed in a mobile terminal.