Segmented Electrode Blocks for Thin Touch Display Integration
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Solution Overview
Problem
Conventional electronic devices with displays face challenges in integrating supplemental features like touch sensing, touch pressure sensing, and tactile feedback without compromising display quality, often resulting in increased thickness and weight due to separate components, and issues like parasitic capacitance that cause visual defects.
Innovation Solution
A display panel configuration with segmented electrode blocks over the display area, where transparent electrode blocks communicate with a touch driver via common signal lines, forming a planar surface with a lower planarization layer to minimize thickness and weight, and integrate touch sensing functionality without disrupting display operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate touch panel components are overlaid on the display panel, then touch sensing functionality is provided, but the thickness and weight of the display panel increase
Solution Approach 1:
The patent merges the touch sensing functionality directly into the display panel by integrating transparent electrode blocks into the display panel's layer structure. These electrode blocks are formed as part of the display panel itself rather than as a separate overlay, combining the display and touch sensing functions into a single integrated structure, thereby reducing overall weight while maintaining touch capability.
Solution Approach 2:
The transparent electrode blocks serve multiple functions: they are part of the display panel structure and simultaneously provide touch sensing functionality. This multi-functional design eliminates the need for separate dedicated touch panel components, reducing weight while achieving versatility in both display and touch interaction.
2Adaptability or versatility
If separate touch panel components are overlaid on the display panel, then touch sensing functionality is provided, but the thickness of the display panel increases
Solution Approach 1:
The touch sensing components are merged into the display panel's existing layer structure. The transparent electrode blocks are formed within the panel's thickness rather than adding external layers, combining display and touch functions in the same spatial envelope and avoiding thickness increase.
Solution Approach 2:
The transparent electrode blocks are nested within the display panel's layer structure, similar to how one object is placed inside another. The electrode blocks are positioned within the panel's internal layers rather than as external additions, allowing touch functionality to be contained within the existing thickness profile.
3Adaptability or versatility
If conductive lines are added for touch sensing, then touch functionality is integrated, but parasitic capacitance generates visual defects
Solution Approach 1:
The harmful parasitic capacitance effects are extracted or minimized by carefully designing the conductive line configuration. The patent uses specific routing patterns and positioning for the signal lines that reduce unwanted capacitance with other components, separating the useful touch sensing function from the harmful parasitic effects through strategic line placement and shielding considerations.
Solution Approach 2:
The patent introduces planarization layers as intermediary structures between the conductive signal lines and other display components. These intermediate layers act as buffers that reduce direct capacitive coupling between adjacent conductive elements, thereby minimizing parasitic capacitance effects while still allowing the touch sensing function to operate effectively.
4Adaptability or versatility
If multiple separate components are integrated within the display panel stacks, then supplemental features are added, but the operation becomes complicated and display qualities may be compromised
Solution Approach 1:
Multiple supplemental features (touch sensing, tactile feedback, pressure sensing) are merged into a single integrated structure using the transparent electrode blocks. Rather than adding separate independent components for each feature, the patent combines them into one unified system that operates through coordinated control, reducing operational complexity while maintaining versatility.
Solution Approach 2:
The transparent electrode blocks serve as a universal platform that can perform multiple supplemental functions depending on how they are configured and controlled. The same basic structure can provide touch sensing, pressure sensing, and tactile feedback by varying the control signals and readout methods, reducing the need for multiple separate component systems and simplifying overall operation.
Data Source
AI summary
A display of an electric device includes a plurality of separated transparent electrode blocks, which are configured to provide one or more of supplemental features such as touch recognition. Signal paths between the transparent electrode blocks and the driver for the supplemental feature are implemented with a plurality of conductive lines placed under positioned under one or more planarization layers. The conductive lines implementing the signal paths are routed across the display area, directly toward a non-display area where drive-integrated circuits are located.