Micro Driving Device Touch Signal Decoupling
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Solution Overview
Problem
Conventional touch display devices have high power consumption due to the main driving chip needing to provide both display and touch driving signals, which is not efficient for touch display panels.
Innovation Solution
The implementation of an array substrate with micro light emitting devices, micro driving devices, and touch driving electrodes, where the touch driving electrodes receive signals from or are outputted by the micro driving devices, eliminating the need for the main driving chip to generate touch driving signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the main driving chip provides both display signals and touch driving signals, then the touch display function is realized, but the power consumption of the main driving chip increases
Solution Approach 1:
The patent divides the driving functions into separate units: the main driving chip is responsible only for display signals, while independent micro driving devices (integrated with micro light emitting devices) handle touch driving signals for their respective regions. This segmentation eliminates the need for the main driving chip to generate touch driving signals, directly reducing its power consumption while maintaining full touch display functionality.
Solution Approach 2:
The touch driving signal generation function is extracted from the main driving chip and relocated to distributed micro driving devices. Each micro driving device generates touch driving signals locally for its corresponding region, removing this energy-consuming function from the main chip and reducing overall system power consumption.
2Adaptability or versatility
If the main driving chip provides both display signals and touch driving signals, then the touch display function is realized, but the device complexity increases
Solution Approach 1:
The patent segments the signal generation responsibilities: the main driving chip focuses exclusively on display signals, while multiple simple micro driving devices handle touch driving signals in their respective regions. This division simplifies the main chip's design and reduces signal generation complexity, as each component has a dedicated, simplified function rather than handling multiple signal types.
Data Source
AI summary
The disclosure provides a touch display device, a touch display panel, a touch display panel and a driving method. The touch display panel includes a first substrate, multiple micro light emitting devices, multiple micro driving devices and multiple touch driving electrodes. Each micro driving device corresponds to the multiple micro light emitting devices to drive the multiple micro light emitting devices to emit light. At least one touch driving electrode corresponds to at least one micro driving device. The touch driving electrode receives a signal transmitted to a corresponding micro driving device as a touch driving signal, or, the touch driving electrode receives a signal outputted by the corresponding micro driving device as the touch driving signal. Therefore, there is no need for a main driver chip to provide the touch driving signal to the touch driving electrode. Thus, the power consumption of the main driver chip is greatly reduced.