Multi-Region Display Layout With Variable Frame Frequencies
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Solution Overview
Problem
As the number of display devices mounted on vehicles increases, so does power consumption, which is a concern for extending the cruising distance of hybrid and electric vehicles, where low power consumption is preferable.
Innovation Solution
A display device with multiple display regions is designed, where each region has its own scanning line and data line drive circuits, allowing for independent frame frequencies, reducing overall power consumption while maintaining high-quality display by ensuring seamless image integration across regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of display devices mounted on a vehicle is increased to provide more information and functionality, then the display capability and information provision are improved, but the power consumption increases
Solution Approach 1:
The display device is divided into multiple independent display regions (first display region, second display region, third display region), each with its own drive circuits. This segmentation allows each region to operate independently with different frame frequencies, enabling the system to provide diverse display capabilities while consuming less power by adjusting the refresh rate of each region according to its specific requirements.
2Use of energy by moving object
If different frame frequencies are applied to different divided regions, then power consumption is reduced, but image quality and seamless integration across regions may be compromised
Solution Approach 1:
Different frame frequencies are applied to different display regions based on their specific requirements. The first display region uses a first frame frequency, the second display region uses a second frame frequency, and the third display region uses a third frame frequency. This local quality approach allows each region to operate at the optimal frame frequency for its content, reducing overall power consumption while maintaining high image quality in each region.
Solution Approach 2:
Multiple display regions with different frame frequencies are merged into a single integrated display device. The scanning lines and data lines are configured to enable seamless image integration across regions with different refresh rates, combining the benefits of power-saving variable frame frequency operation with the appearance of a unified high-quality display.
Data Source
AI summary
A display device includes a substrate including a display region including three or more divided regions disposed in a first direction on a main surface, a scanning line extending in a first direction, a data line extending in a second direction, a plurality of pixels, and a scanning line connection wiring line extending in the second direction, which are disposed in each divided region, a plurality of data line drive circuits respectively connected to the data lines in each divided region, and a plurality of scanning line drive circuits corresponding to each divided region. The scanning line drive circuits and the data line drive circuits are respectively arrayed in the first direction outside the display region, each of the scanning line connection wiring lines electrically connects the scanning line drive circuit to the scanning line, and the scanning line drive circuit and the data line drive circuit display an image in at least one of the three or more divided regions at a frame frequency different from that in the other divided regions.