Touch Display Panel Double-Side Drive Circuit Signal Transmission
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Solution Overview
Problem
Touch display panels face issues with normal operation due to voltage drops and signal delays caused by single-sided signal supply, leading to incomplete scanning and display problems, especially in double-side scanning modes where failure of one scanning circuit affects the entire panel.
Innovation Solution
A touch display panel design with a first and second drive circuit unit connected by a metal connecting line, allowing for single-side scanning and double-side signal transmission, reducing signal delay and voltage drop while minimizing the risk of shift register unit damage by arranging them on one side.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-side scanning manner is used, then device complexity is reduced, but voltage drop occurs at the distal end of the drive electrode
Solution Approach 1:
The patent transitions from single-side signal supply to double-side signal supply by adding drive circuit units on both sides of the display panel. This dimensional change in signal transmission architecture enables signals to reach the distal end of drive electrodes through multiple paths, reducing voltage drop while maintaining single-side scanning simplicity.
Solution Approach 2:
The scanning function is segmented between a first drive circuit unit and a second drive circuit unit positioned on opposite sides of the display panel. Each drive circuit unit independently drives scan electrodes, allowing the system to maintain single-side scanning complexity while achieving double-side signal transmission for improved reliability.
2Reliability
If double-side scanning manner is used, then signal transmission reliability is improved, but device complexity increases due to identical scanning circuits required on both sides
Solution Approach 1:
The patent implements dynamic scanning control where the first and second drive circuit units can operate independently or cooperatively. The system dynamically selects scanning modes (single-side or double-side) based on operational requirements, providing flexibility to balance reliability needs against complexity constraints without requiring permanently identical circuits on both sides.
Solution Approach 2:
The drive circuit units are designed with universal functionality to perform multiple roles: they can individually conduct single-side scanning to minimize complexity, or work together in double-side scanning mode to maximize reliability. This multi-functionality allows the same circuit architecture to adapt to different operational requirements.
3Device complexity
If single-side signal supply is used, then device complexity is reduced, but signal delay and voltage drop occur leading to incomplete scanning
Solution Approach 1:
The patent adds a spatial dimension to signal transmission by positioning drive circuit units on both sides of the display panel. This enables signals to propagate through multiple spatial paths simultaneously, reducing signal delay and voltage drop without complicating the fundamental single-side scanning architecture.
Solution Approach 2:
The patent introduces connecting electrodes and connecting lines as intermediary elements that facilitate efficient signal transmission between the first and second drive circuit units. These intermediaries enable double-side signal supply while maintaining a relatively simple overall architecture by providing direct conductive paths rather than requiring complex routing.
Data Source
AI summary
A touch display panel, including a touch display unit and drive circuit units disposed at the periphery of the touch display unit. The touch display unit includes touch drive electrodes, the drive circuit unit includes a first drive circuit unit and a second drive circuit unit which are electrically connected with two ends of each of the touch drive electrodes, respectively, and the first drive circuit unit is electrically connected with the second drive circuit unit through a first connecting line.