Hybrid Pixel Driver Architecture for Zero Border Displays
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Solution Overview
Problem
Existing display systems face limitations in scalability and border reduction for large area and high-resolution displays due to the need for extensive row driver chips and silicon area usage in passive matrix displays.
Innovation Solution
The implementation of a hybrid architecture in display panels with backbone hybrid pixel driver chips that combine row function and pixel driving functions, reducing the need for separate row driver chips and allowing for tile-based configurations with reduced borders and increased flexibility in size and shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If passive matrix display architecture is used, then scalability to large area displays is improved, but silicon area usage increases significantly
Solution Approach 1:
The display is divided into multiple tiles, each with its own local pixel driver chips. This segmentation allows large area displays to be constructed from manageable units, reducing the silicon area required for control circuitry in each tile while maintaining overall scalability.
Solution Approach 2:
The patent introduces a vertical backbone architecture where row driver functions are distributed along the vertical dimension rather than requiring extensive horizontal silicon area. Global signal lines extend vertically through the display, enabling row control without occupying significant planar silicon space.
2Area of stationary object
If extensive row driver chips are used, then control of large area displays is improved, but panel peak current increases
Solution Approach 1:
Row driver functions are segmented and distributed across multiple backbone hybrid pixel driver chips rather than using a single extensive row driver. This distribution reduces the peak current demand on any single chip while maintaining control capability across the entire display area.
Solution Approach 2:
Backbone hybrid pixel driver chips serve as intermediaries between global signal lines and local pixel driver chips. These intermediaries manage signal distribution and current flow, reducing peak current requirements by spreading the driving load across multiple devices.
3Ease of operation
If separate row driver chips are used, then row control functionality is improved, but device complexity increases
Solution Approach 1:
The backbone hybrid pixel driver chips combine both row driver and pixel driver functions in a single integrated device. This merging eliminates the need for separate row driver chips, reducing overall device complexity while maintaining full row control functionality through the hybrid architecture.
Solution Approach 2:
Backbone hybrid pixel driver chips are designed to perform multiple functions: they receive global signals, generate row control signals, and drive pixel columns. This multi-functionality reduces the total number of specialized chips needed while preserving comprehensive control capabilities.
Data Source
AI summary
Hybrid architectures and method methods of operating a display panel are described. In an embodiment, row driver and pixel driver functions are combined in a group of backbone hybrid pixel driver chips, wherein global signal lines are distributed to the backbone hybrid pixel driver chips, where the global signals are manipulated and distributed to a row of pixel driver chips.