Dual Controller Drive Apparatus for Touch Display Voltage Control
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Solution Overview
Problem
Existing display apparatuses face challenges in efficiently controlling the display and touch functions, particularly in managing the loading of data voltage onto data lines and selecting appropriate drive modes, which affects the display and touch performance.
Innovation Solution
A drive apparatus comprising a first controller that generates a data control synchronization signal to control the loading of data voltage onto a touch display panel and a second controller that outputs set level signals to select the display drive mode, allowing for efficient control of data voltage loading and drive signal output based on the synchronization signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single controller is used to control both display and touch functions, then device complexity is reduced, but control precision and functional independence deteriorate
Solution Approach 1:
The controller is divided into two independent controllers: a first controller dedicated to display function control and a second controller dedicated to touch function control. This segmentation allows each controller to independently optimize its control algorithms and timing, improving control precision for both display and touch operations while maintaining functional independence.
2Reliability
If data voltage is continuously loaded onto data lines, then display performance is maintained, but power consumption increases
Solution Approach 1:
The first controller generates a data control synchronization signal that periodically controls the loading of data voltage onto data lines. By using periodic pulsing rather than continuous voltage application, the system maintains display performance during active periods while significantly reducing power consumption during inactive periods when data voltage is not loaded.
3Adaptability or versatility
If multiple drive modes are supported, then adaptability is improved, but device complexity increases
Solution Approach 1:
The second controller outputs set level signals before being fully energized to pre-select the display drive mode. This preliminary action allows the system to configure the appropriate drive mode (such as RGB, RGB565, or other color formats) before main operation begins, enabling adaptability to different display requirements without adding complex real-time switching logic during operation.
4Measurement precision
If timing synchronization is strictly enforced, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The data control synchronization signal generated by the first controller serves as an intermediary that coordinates between the display control and touch control operations. This synchronization signal ensures precise timing alignment between data voltage loading and touch signal processing without requiring complex direct coordination between the two controllers, simplifying the overall signal coordination architecture.
Data Source
AI summary
Embodiments of the present disclosure provide a drive apparatus and a display apparatus. The drive apparatus includes: a first controller configured to generate and output a data control synchronization signal after being energized, the data control synchronization signal is configured to control whether to load a data voltage onto a data line in a touch display panel to be connected; and a second controller connected with the first controller, and configured to directly output a first set level signal and a second set level signal before being energized; where the first set level signal is configured to control the selection of a display drive mode from a plurality of drive modes supported by the touch display panel to be connected; and the second set level signal is configured to control the output of a drive signal corresponding to the display drive mode to the touch display panel to be connected.