Foldable Digitizer Plate with Pattern Area Openings
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Solution Overview
Problem
In foldable electronic devices, designing the wires of a digitizer is challenging, particularly at the connection portion of the two housings, leading to increased thickness and complexity due to the need for connectors and separate FPCBs.
Innovation Solution
The electronic device incorporates a digitizer plate with a pattern area between the first and second plate areas, featuring a plurality of openings and additional wires connected to the digitizer wires, which reduces the thickness and improves touch detection performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connectors and separate FPCBs are used to connect digitizer wires in the connection portion of two housings, then the digitizer can be connected, but the thickness of the electronic device increases and the structure becomes more complex
Solution Approach 1:
The patent merges the digitizer wires directly into the flexible display panel, eliminating the need for separate connectors and FPCBs. The wire extending portion is integrated into the display panel structure, allowing direct connection between the two housings without additional components, thus reducing structural complexity while maintaining connection reliability.
Solution Approach 2:
The patent extends a wire in the vertical dimension (thickness direction) from the display panel to the connection portion, allowing the wire to bypass the horizontal space constraints. This dimensional change enables direct connection without requiring separate connectors or FPCBs, reducing both thickness and structural complexity.
2Reliability
If connectors and separate FPCBs are used to connect digitizer wires in the connection portion of two housings, then the digitizer can be connected, but the thickness of the electronic device increases
Solution Approach 1:
The patent merges the digitizer wires directly into the flexible display panel, eliminating the need for separate connectors and FPCBs that would add thickness. The integrated wire extending portion maintains connection reliability while minimizing the thickness increase to only what is necessary for the wire extension itself.
Solution Approach 2:
The patent extends a wire in the vertical dimension (thickness direction) from the display panel to the connection portion, allowing the wire to bypass the horizontal space constraints. This dimensional change enables direct connection without requiring separate connectors or FPCBs, reducing both thickness and structural complexity.
3Length of stationary object
If wires are avoided in the connection portion, then thickness is reduced, but additional wires and layers are needed to maintain touch detection performance
Solution Approach 1:
The patent extends a wire in the vertical dimension (thickness direction) from the display panel to the connection portion, allowing the wire to bypass the horizontal space constraints. This dimensional change enables direct connection without requiring separate connectors or FPCBs, reducing both thickness and structural complexity.
Solution Approach 2:
The digitizer plate is segmented into multiple layers, with the wire extending portion located in a specific layer (e.g., the fourth layer) that is positioned away from the connection portion. This segmentation allows the wire to be routed through the thickness direction without interfering with the connection portion structure, maintaining thinness while preserving touch detection functionality.
Data Source
AI summary
An electronic device is provided. The electronic device includes a first housing, a second housing rotatably connected to the first housing, a display panel disposed across the first housing and the second housing, and a digitizer plate disposed below the display panel and including wires of a digitizer, wherein the digitizer plate includes a first plate area disposed in the first housing, a second plate area disposed in the second housing, and a pattern area provided between the first plate area and the second plate area and including a plurality of openings, wherein the first plate area and the second plate area of the digitizer plate includes a plurality of layers including a first layer and a second layer where the wires of the digitizer are provided, and at least one additional layer, and wherein the at least one additional layer in the first plate area and/or the second plate area is provided with an additional wire electrically connected to the wires of the digitizer provided on the first layer and/or the second layer.