Input Detection Device Electrode Group Timing Segmentation
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Solution Overview
Problem
General input detection devices for display panels suffer from lower resolution and positional deviation due to detecting input positions for each electrode block, leading to degraded position detection accuracy.
Innovation Solution
An input detection device that inputs drive signals to electrode groups at different timings, using both adjacent electrodes to improve detection sensitivity and accuracy by averaging detection signals over multiple electrode groups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If input position is detected for each electrode block, then detection coverage is improved, but resolution and position detection accuracy are degraded
Solution Approach 1:
The patent segments the detection process into multiple time slots, where each time slot corresponds to a specific electrode group. By sequentially activating different electrode groups (segments) at different timings, the system achieves both comprehensive coverage and precise localization. The segmentation of time resources allows individual electrode signals to be processed with high resolution while maintaining overall detection coverage across all electrodes.
Solution Approach 2:
The patent introduces a time dimension to the detection process. Instead of simultaneously detecting all electrodes (spatial dimension only), the system adds temporal sequencing, where electrodes are detected at different time points. This time-dimensional approach resolves the contradiction by allowing each electrode to be detected with individual precision while collectively covering the entire detection area.
2Reliability
If drive signal is input to multiple electrode groups at different timings, then detection sensitivity is improved, but detection process complexity increases
Solution Approach 1:
The patent employs periodic action by sequentially activating electrode groups in repeating time cycles. Each electrode group is driven at specific periodic time slots, allowing detection signals to be accumulated and averaged over multiple periods. This periodic sequencing improves detection sensitivity through signal reinforcement while managing complexity through regular, predictable timing patterns that can be efficiently controlled.
Solution Approach 2:
The system maintains continuous detection coverage by ensuring that electrode groups are activated in overlapping or sequential time slots without gaps. This continuity allows the detection process to proceed without interruption, improving sensitivity through continuous signal accumulation while the systematic timing pattern keeps the control complexity manageable.
Data Source
AI summary
An input detection device includes an input processor inputting a drive signal to an electrode group including a number of electrodes that are arranged adjacent to each other among a plurality of electrodes, and a detection processor detecting an input position based on a detection signal corresponding to the drive signal input to the electrode group. The input processor inputs a first drive signal to a first electrode group including electrodes at a first timing and inputs, at a second timing following the first timing, a second drive signal to a second electrode group including a number of the electrodes included in the first electrode group and at least one electrode positioned adjacent to the first electrode group. The detection processor detects the input position based on a first detection signal corresponding to the first drive signal and a second detection signal corresponding to the second drive signal.