Driving Chip Segmentation for Display Signal Interference
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Solution Overview
Problem
Existing display devices face interference between data signals and scan signals, leading to increased dead space due to separate data driving chips and scan driving chips, which affects the efficiency and compactness of the display device design.
Innovation Solution
A driving chip is designed with a data channel block and a scan channel block arranged in a specific configuration to reduce interference, where data channels and scan channels are disposed in a manner that allows for efficient signal transmission with reduced dead space, incorporating data pads and scan pads to receive signals from the channels and transmit them to the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If data driver and scan driver are implemented as separate driving chips, then interference between data signal and scan signal is reduced, but dead space increases and device compactness deteriorates
Solution Approach 1:
The driving chip is segmented into distinct data channel blocks and scan channel blocks with separate pad blocks. Data channels and scan channels are physically separated and extended in different directions from the central global circuit, minimizing signal interference while maintaining compact integration.
Solution Approach 2:
The patent uses a two-dimensional layout strategy where data channels extend in a first direction (e.g., horizontal) and scan channels extend in a second direction (e.g., vertical) from the global circuit. This orthogonal arrangement in different dimensions effectively separates data and scan signals spatially, reducing interference while conserving chip area.
2Area of stationary object
If data driver and scan driver are integrated into a single driving chip, then dead space is reduced and device compactness is improved, but interference between data signal and scan signal increases
Solution Approach 1:
The integrated driving chip is divided into functionally independent data channel blocks and scan channel blocks, each with dedicated pads and channels. This segmentation allows close integration for compactness while maintaining physical separation to prevent signal interference.
Solution Approach 2:
Data channels and scan channels are arranged in orthogonal directions (first direction and second direction respectively) from the global circuit, utilizing two-dimensional spatial separation. This dimensional arrangement enables high integration density while effectively isolating data and scan signals to minimize interference.
3Area of stationary object
If data channels and scan channels are closely arranged, then chip area is reduced, but signal interference increases
Solution Approach 1:
The patent employs orthogonal channel arrangements where data channels extend in a first direction and scan channels extend in a second direction perpendicular to the first. This two-dimensional orthogonal layout maximizes spatial efficiency and minimizes chip area while maintaining sufficient separation to reduce signal interference through directional isolation.
Data Source
AI summary
A driving chip includes a data channel block including a plurality of data channels, a scan channel block disposed in a first direction from the data channel block and including a plurality of scan channels, a data pad block disposed outside the data channel block and the scan channel block in the first direction and including a plurality of data pads which respectively receive a data signal from the plurality of data channels, and a scan pad block disposed outside the data channel block and the scan channel block in the first direction, disposed outside the data pad block in a second direction crossing the first direction and including a plurality of scan pads which respectively receive a scan signal from the scan channels.