Shared Driving Circuit for Display Resolution and Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display systems face increased power consumption and fabrication challenges as resolution increases, requiring numerous driving circuits that are difficult to integrate on a single chip and result in higher production costs due to complex printed circuit boards.
Innovation Solution
A display system utilizing a shared driving circuit architecture, where a limited number of shared driving circuits drive multiple light emitting arrays, reducing the number of required circuits and simplifying the printed circuit board layout, thereby minimizing power consumption and fabrication complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of driving circuits is increased to support higher resolution displays, then the display resolution is improved, but the power consumption increases significantly
Solution Approach 1:
A single driving circuit is designed to drive multiple LED arrays by generating scan signals and channel signals that can be selectively applied to different arrays. The circuit incorporates multiplexing capabilities where scan drivers and channel drivers can serve multiple arrays through selective enabling and disabling, allowing one circuit to perform the function of what would traditionally require multiple separate circuits.
2Measurement precision
If the number of driving circuits is increased to support higher resolution displays, then the display resolution is improved, but the fabrication difficulty increases
Solution Approach 1:
Multiple driving circuits are merged into a single integrated circuit that can drive multiple LED arrays. The scan drivers, channel drivers, and control logic are combined into one chip, reducing the total number of separate components from eight or more to just one, thereby simplifying the fabrication process and enabling integration on a single chip.
3Measurement precision
If the number of driving circuits is increased to support higher resolution displays, then the display resolution is improved, but the printed circuit board complexity increases
Solution Approach 1:
The driving circuit functionality is extracted from multiple separate components and consolidated into a single integrated circuit. This extraction reduces the number of connection traces required on the printed circuit board, as all necessary scan signals, channel signals, and control signals are now provided through a single circuit package rather than requiring numerous separate connections.
4Measurement precision
If the number of driving circuits is increased to support higher resolution displays, then the display resolution is improved, but the total cost increases
Solution Approach 1:
A single universal driving circuit is designed to replace multiple specialized driving circuits, reducing component count and associated costs. The circuit can adapt to drive multiple LED arrays through selective signal enabling, eliminating the need for eight or more separate circuit packages and reducing overall system cost despite maintaining high display resolution.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display system includes a number (M) of scan line units (41-43), a number (N) of channel line units (51-53), a number (R) of light emitting arrays (31,1-33,3) connected to the scan line units (41-43) and the channel line units (51-53), and a number (L) of shared driving circuits (21-23), where M≥1, N≥1, R≥1, and L is equal to a maximum of M and N when M#N, and is equal to M otherwise. Each shared driving circuit (21-23) is operable to generate or not to generate a scan driving output, and is operable to generate or not to generate a channel driving output. Each of a number (M) of the shared driving circuits (21-23) is for providing the scan driving output to a respective scan line unit (41-43). Each of a number (N) of the shared driving circuits (21-23) is for providing the channel driving output to a respective channel line unit (51-53).