Modular Display Scan Groups With Daisy-Chained Progressive Scanning
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Solution Overview
Problem
Large-scale display systems with high-resolution display modules require numerous driver ICs and pins, leading to increased material and power consumption, necessitating a method to control multiple scan groups without a high-performance controller.
Innovation Solution
A modular display apparatus comprising a plurality of display modules with scan groups connected in a daisy chain method, utilizing a controller to transmit image signals and scan signals using a progressive scan method, reducing the need for high-performance controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixels in a display are driven in a passive matrix method with increased number of pixels, then display resolution is improved, but number of driver ICs increases leading to increased material cost and power consumption
Solution Approach 1:
The display panel is divided into multiple scan groups, where each scan group can be controlled by a single driver IC. This segmentation allows one driver IC to manage multiple scan lines through sequential scanning, thereby reducing the total number of driver ICs needed while maintaining high display resolution
Solution Approach 2:
The driver IC uses periodic scanning to sequentially activate different scan groups within a frame period. By dividing the frame into multiple sub-frames and scanning through different groups in each sub-frame, a single driver IC can control multiple scan groups over time, reducing hardware requirements while achieving high resolution
2Area of stationary object
If display apparatus becomes large-scaled with increased number of scan groups, then display area is improved, but number of pins required at controller increases leading to increased material cost and power consumption
Solution Approach 1:
The display is divided into multiple scan groups that can be independently controlled. Each scan group shares common data lines, and the controller only needs to transmit control signals for scanning sequences rather than individual signals for each scan line, significantly reducing the pin count required at the controller
Solution Approach 2:
The same data lines are reused across multiple scan groups, and the controller uses universal control signals that can address any scan group through sequential selection. This multi-functional approach allows a limited number of pins to control a large number of scan groups, enabling large-scale displays without proportionally increasing controller pin requirements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces material and power consumption by minimizing the number of required pins and driver ICs, enabling efficient control of large-scale display systems with lower-cost and less power-hungry components.
Implementation Method 1
light emitting diodes (LEDs) generated at a cross area of the scan lines and the data lines
Data Source
AI summary
A modular display apparatus is disclosed. The modular display apparatus includes a plurality of display modules, and a controller configured to control the plurality of display modules, and the plurality of display modules include a plurality of scan groups, respectively, the controller is configured to transmit an image signal corresponding to the respective display modules based on an image frame, and the respective scan groups included in a first display module from among the plurality of display modules includes a plurality of scan lines arranged in one direction, a plurality of data lines arranged in a direction perpendicular to the plurality of scan lines, light emitting diodes generated at a cross area of the scan lines and the data lines, and at least one driver integrated circuit.