Liquid Crystal Display Driving with Super-Resolution and Local Dimming
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Solution Overview
Problem
Existing liquid crystal display devices face challenges in improving image quality, reducing power consumption, minimizing noise, and optimizing component count, size, and cost, while maintaining high processing speed and frame frequency.
Innovation Solution
A method for driving liquid crystal display devices that includes sequential steps of super-resolution processing, local dimming processing, and overdrive processing, utilizing various switches such as transistors or diodes to control current flow and optimize image processing, with specific preferences for CMOS switches to reduce power consumption and improve accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If super-resolution processing is performed to improve image quality, then image quality is improved, but processing time increases and frame frequency decreases
Solution Approach 1:
The patent applies preliminary action by performing super-resolution processing on selected regions of interest before the main display processing. By identifying and processing only critical areas that require high resolution while leaving other areas at lower resolution, the system improves image quality where needed without proportionally increasing overall processing time, thus maintaining higher frame frequency.
2Measurement precision
If multiple processing steps (super-resolution, local dimming, overdrive) are performed sequentially to improve image quality, then image quality is improved, but processing time increases and power consumption increases
Solution Approach 1:
The patent applies local quality by implementing local dimming processing that adjusts backlight luminance independently in different regions of the display. Instead of uniformly adjusting the entire backlight, the system selectively dims regions where high luminance is not required, thereby reducing overall power consumption while maintaining high image quality in critical areas where full luminance is applied.
3Measurement precision
If multiple processing steps are performed sequentially to improve image quality, then image quality is improved, but device complexity increases
Solution Approach 1:
The patent applies merging by integrating multiple image processing functions (super-resolution, local dimming, overdrive) into a unified processing pipeline that operates concurrently where possible. By combining these processing steps into a coordinated system rather than separate independent processes, the patent reduces overall device complexity while maintaining the image quality improvements from each individual processing step.
Data Source
AI summary
A low-resolution image is displayed at high resolution and power consumption is reduced. Resolution is made higher by super-resolution processing. Then, display is performed with the luminance of a backlight controlled by local dimming after the super-resolution processing. By controlling the luminance of the backlight, power consumption can be reduced. Further, by performing the local dimming after the super-resolution processing, accurate display can be performed.