Digitizer Module Layer Structure for Rigid Lightweight Displays
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Solution Overview
Problem
Flexible display devices face challenges in achieving a balance between rigidity and surface quality due to the use of metal support layers, which increase weight and compromise digitizer module performance.
Innovation Solution
A display device design incorporating a digitizer module with a prepreg layer comprising glass or carbon fibers, a shield layer, and a metal sheet, strategically positioned to provide excellent rigidity and surface quality while minimizing weight, using a layered structure that includes adhesive layers and cover layers to support the digitizer coils and maintain the folded state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal support layer is used to secure the rigidity of the digitizer module, then the rigidity is improved, but the surface quality is lowered and the weight increases
Solution Approach 1:
The patent employs a composite structure combining a flexible substrate with a rigid support plate to achieve the desired rigidity without using a metal support layer within the digitizer module itself. This composite approach allows the digitizer module to maintain flexibility while the support plate provides structural rigidity, thereby avoiding the weight and surface quality issues associated with metal support layers.
2Strength
If a metal support layer is used to secure the rigidity of the digitizer module, then the rigidity is improved, but the surface quality is lowered
Solution Approach 1:
The patent uses a composite structure with a flexible substrate and support plate, eliminating the need for a metal support layer within the digitizer module. This approach maintains surface quality by avoiding metal layer deposition processes that can cause surface defects, while still achieving the required rigidity through the support plate structure.
3Stability of the object's composition
If additional lamination steps are performed to assemble the digitizer module, then the structural integrity is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent combines multiple functional layers into an integrated structure where the flexible substrate, digitizer coils, and support plate are assembled in a simplified manner. The support plate with pre-formed openings eliminates the need for additional lamination steps to create openings, thereby reducing manufacturing complexity while maintaining structural integrity through the unified design.
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 enhances the rigidity and surface integrity of the display device, reduces weight, and simplifies manufacturing processes by eliminating the need for additional lamination steps, thereby improving user convenience and cost-effectiveness.
Implementation Method 1
a shield layer disposed below the digitizer layer, and comprising a magnetic metal powder
Implementation Method 2
a prepreg layer disposed, below the digitizer layer, over or below the shield layer
Data Source
AI summary
Provided is a display device including a display module, a support plate disposed below the display module, and a digitizer module, the digitizer module includes a digitizer layer including a base layer, a first coil disposed on a top surface of the base layer, and a second coil disposed on a bottom surface of the base layer, a shield layer disposed below the digitizer layer, and including a magnetic metal powder, and a prepreg layer disposed below the digitizer layer and over or below the shield layer.