Display Module Source Driver Memory Segmentation
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Solution Overview
Problem
Conventional display modules require continuous power consumption for video signal transmission from a timing controller to source drivers, leading to increased processing load and costs, especially with the need for high-resolution displays.
Innovation Solution
Incorporating memory sections within each source driver for local storage of video signals and synchronization control to manage video signal output, reducing the need for increased memory capacity in the timing controller and allowing for synchronized video signal transmission without a timing controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a timing controller with frame memory is used to supply video signals to multiple source drivers, then synchronized display across regions is achieved, but power consumption increases due to continuous signal transmission
Solution Approach 1:
The patent divides the display panel into multiple regions, each region having its own source driver and frame memory. This segmentation allows each source driver to independently control its region without requiring continuous signal transmission from a central timing controller, thereby reducing power consumption while maintaining display synchronization across all regions.
Solution Approach 2:
The frame memory in each source driver pre-stores the video signals required for its region before transmission is needed. This preliminary action eliminates the need for continuous real-time signal transmission from the timing controller, reducing power consumption while ensuring signals are ready for synchronized display.
2Manufacturing precision
If frame memory capacity is increased to support high-resolution displays, then display quality improves, but timing controller cost and processing load increase
Solution Approach 1:
Instead of concentrating all frame memory capacity in a single timing controller, the patent segments the memory capacity across multiple source drivers. Each source driver has its own frame memory sized appropriately for its region, which reduces the processing load and cost of individual controllers while collectively supporting high-resolution displays.
Solution Approach 2:
The patent distributes memory capacity from a single central controller across multiple distributed source drivers, effectively moving from a centralized memory architecture to a distributed one. This dimensional change in memory allocation reduces the complexity and cost of each individual controller while maintaining overall high-resolution display capability.
3Adaptability or versatility
If multiple source drivers are used for divided regions, then display flexibility and resolution improve, but synchronization control becomes more complex
Solution Approach 1:
The patent assigns each source driver its own frame memory and control logic, segmenting the synchronization control function from a central timing controller to distributed local controllers. This segmentation simplifies synchronization because each source driver independently manages its region without complex inter-controller coordination, while still achieving synchronized display across all regions.
Solution Approach 2:
Each source driver with its frame memory becomes self-sufficient, autonomously managing its video signal storage and transmission without requiring complex centralized control. This self-service approach reduces synchronization complexity while maintaining display flexibility and adaptability across multiple regions.
Data Source
AI summary
A display module includes a plurality of source drivers; a plurality of memory sections respectively provided for the plurality of source drivers, each of the plurality of memory sections being for storage of at least data of a video signal to be displayed on that one of a plurality of divided regions for which that one of the plurality of source drivers is provided, for which the memory section is provided; and a timing controller serving as a sync controller configured to synchronize the plurality of source drivers to synchronously output video signals that the plurality of source drivers output based on data respectively supplied from the plurality of memory sections, so that the synchronized video signals are supplied to corresponding ones of the plurality of divided regions.