LCD Memory Block Allocation for High-Speed Driving
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Solution Overview
Problem
Time-sequential LCD devices require large frame memory capacity for high-speed operation, leading to increased production costs and power consumption due to the need for separate memory units for odd and even frames.
Innovation Solution
The LCD device employs a memory unit that records image data of one frame on multiple blocks with a first frequency and the succeeding frame on additional blocks, allowing for sequential reading and application of data with a higher frequency, minimizing the need for large frame memory capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If separate frame memory units are used for odd and even frames to enable high-speed operation, then the driving speed is improved, but the memory recording capacity and production cost increase
Solution Approach 1:
The patent merges the previously separate odd-frame memory and even-frame memory into a single frame memory unit. By using one memory unit to store both odd and even frames sequentially, the invention reduces the total memory capacity requirement while maintaining high-speed driving capability through optimized read/write timing control.
Solution Approach 2:
The invention implements dynamic memory block allocation where the frame memory is divided into multiple blocks that can be flexibly assigned for odd frames, even frames, or buffer operations. This dynamic allocation allows the system to adapt memory usage to actual driving needs, reducing wasted capacity while supporting high-speed operation.
2Speed
If separate frame memory units are used for odd and even frames, then high-speed operation is achieved, but production cost increases
Solution Approach 1:
By combining multiple separate memory units into a single frame memory unit, the invention reduces the number of components that need to be manufactured and assembled. This merging approach directly lowers production costs while maintaining the high-speed driving performance through efficient memory management techniques.
3Speed
If large frame memory capacity is used for high-speed operation, then driving speed is improved, but power consumption increases
Solution Approach 1:
The invention employs dynamic memory block allocation where memory blocks are actively assigned and reassigned based on current operational needs (odd frames, even frames, or buffer operations). This dynamic approach ensures that only the necessary memory capacity is actively used at any given time, reducing overall power consumption while maintaining high-speed driving capability.
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 the memory recording capacity by up to 33.3% and 16.6% in different configurations, enabling high-speed operation while lowering production costs and power consumption.
Implementation Method 1
Driving the LCD device uses the optical anisotropy and polarization properties of liquid crystal
Implementation Method 2
Driving the LCD device uses the optical anisotropy and polarization properties of liquid crystal
Implementation Method 3
The molecular arrangement direction can be controlled by applying an electric field to a group of the liquid crystal molecules
Data Source
AI summary
The present invention discloses an LCD device and a method for driving the same that record one frame of an image on first blocks of a memory unit consisting of a plurality of first blocks and one or more second blocks with a first frequency, record a succeeding frame of the image on one or more second blocks and some of the first blocks with the first frequency, and read the frames of the image sequentially recorded on the first blocks and one or more second blocks with a second frequency in a multiple number, so that the LCD device can be time-sequentially driven. As a result, the required recording capacity of the memory unit for driving the time-sequential LCD device at a high speed may be minimized.