Matrix Display Panel Array Pattern Detection via Capacitive Coupling
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Solution Overview
Problem
In tiling displays, recognizing the array pattern of multiple image display panels is challenging, especially as the number of panels increases, leading to difficulties in transmitting accurate video signals and displaying a unified image.
Innovation Solution
A display device and control system that includes drive and detection electrode units in each image display panel, where an application voltage is applied to the drive electrode unit of a selected panel to generate a detection voltage in adjacent panels, allowing the control device to confirm the array pattern by detecting the generated voltage and synchronize image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the number of image display panels is increased to achieve large screen display, then the display area is improved, but the difficulty of recognizing array pattern increases
Solution Approach 1:
The system performs preliminary actions by applying test voltages to drive electrodes before normal image display, and detecting voltages generated in adjacent panels to pre-establish the array pattern map. This preliminary detection and mapping process enables the control device to recognize panel arrangements in advance, solving the recognition difficulty even as panel numbers increase for larger display areas.
2Area of stationary object
If the number of image display panels is increased to achieve large screen display, then the display area is improved, but the complexity of transmitting accurate video signals increases
Solution Approach 1:
The control device uses feedback from detected voltages in adjacent panels to automatically identify panel positions and adjust video signal routing. By continuously monitoring which panels generate detection voltages in response to drive electrode activations, the system builds a feedback map of the array pattern, enabling accurate video signal transmission to the correct panels regardless of system scale or complexity.
3Productivity
If voltage is applied to drive electrode units in all panels simultaneously, then image display is improved, but the ability to detect array pattern is reduced
Solution Approach 1:
The system segments the voltage application process by activating drive electrodes in one panel at a time rather than all panels simultaneously. This segmentation allows the detection electrode in each panel to clearly identify which specific adjacent panel generated the detection voltage, enabling precise array pattern mapping. After detection is complete, the system transitions to normal operation where multiple panels can display images simultaneously.
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
Enables easy recognition of the array pattern among image display panels, ensuring proper image transmission and display, even with a large number of panels, by using the detection voltage to determine the position and alignment of each panel, thus maintaining image integrity.
Implementation Method 1
a detection electrode unit at which a detection voltage is generated in accordance with the application voltage
Data Source
AI summary
A display apparatus includes a plurality of display panels arranged in a matrix, each of the image display panel includes a plurality of drive electrodes extending in a first direction and a plurality of detection electrodes extending in a second direction crossing the first direction, wherein an AC voltage is sequentially applied to the plurality of drive electrodes of a first display panel, and the plurality of detection electrodes of a second display panel adjacent to the first display panel detect a signal output from the plurality of drive electrodes of the first display panel.