Dual-Mode Electronic Panel Driving for Lower Impedance
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Solution Overview
Problem
The presence of switching elements in electronic devices increases impedance, affecting the performance of displaying and touch sensing functions, necessitating an improvement in circuit design to enhance functionality.
Innovation Solution
An electronic panel with a first and second mode of operation, featuring a substrate, driving circuit, electrodes, signal lines, and switching components that couple or disconnect common signal sources to electrodes based on mode, reducing the number of output terminals and minimizing impedance effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If switching elements are used to connect electronic components to the output terminal, then the number of output terminals required by the driving circuit is reduced, but the impedance of the relevant circuit increases
Solution Approach 1:
The patent divides the circuit into two distinct modes: a first mode where switching elements are used to reduce the number of output terminals, and a second mode where the switching elements are bypassed to reduce impedance. This segmentation allows the system to optimize for different parameters at different times, resolving the contradiction between reducing output terminal count and minimizing impedance.
Solution Approach 2:
The patent implements dynamic switching between two operational modes. A mode switching circuit dynamically selects between the first mode (with switching elements for reduced complexity) and the second mode (without switching elements for reduced impedance) based on operational requirements. This dynamic approach allows the system to adapt its configuration to minimize the harmful effect of impedance when high-performance operation is needed.
2Device complexity
If switching elements are used to provide the same signal to different electronic components, then the number of output terminals is reduced, but the functional performance of the electronic device is reduced
Solution Approach 1:
The patent employs dynamic mode switching to adapt the circuit configuration based on performance requirements. In the first mode, switching elements are utilized to reduce output terminal count. In the second mode, the switching elements are bypassed to provide direct connections, ensuring optimal functional performance when needed. This dynamic adjustment resolves the contradiction between device complexity and reliability.
Solution Approach 2:
The patent extracts the switching elements from the signal path in the second mode by providing a bypass route directly from the output terminal to the electronic components. This extraction eliminates the impedance-introducing elements when high performance is required, while still allowing their use in the first mode for complexity reduction, thus resolving the contradiction between reducing output terminals and maintaining functional performance.
Data Source
AI summary
An electronic panel includes a driving circuit disposed in a peripheral region and having a first output terminal; a first electrode and a second electrode disposed in an active region and respectively electrically connected to a first signal line and a second signal line; a first switching component disposed in the peripheral region and electrically connected to the first output terminal, the first signal line and the second signal line; a second switching component disposed in the peripheral region and electrically connected to a common signal source, the first signal line and the second signal line. When the electronic panel operates in a first mode, the second switching component couples the common signal source to the first electrode and the second electrode. When the electronic panel operates in a second mode, the second switching component disconnects the common signal source from the first electrode and the second electrode.