Electro-Optical Device Subframe Scanning for High Frame Rate
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Solution Overview
Problem
Existing electro-optical devices face challenges in reducing delay times between receiving video data and displaying images, with techniques like JP 2020-21083 A complicating wiring and requiring a trade-off between frame rate and resolution, making it difficult to achieve high frame rates while maintaining resolution.
Innovation Solution
The electro-optical device employs a configuration with first and second scanning lines and pixel circuits, where data signals for alternating rows are output during different subframe periods within a frame period, allowing for efficient data transfer and reduced wiring complexity, enabling high frame rates with maintained resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If two scanning lines per row are used to reduce delay time, then the delay time is reduced, but the wiring complexity increases
Solution Approach 1:
The frame period is segmented into multiple subframe periods, with each subframe period dedicated to selecting specific scanning lines (odd or even rows). This segmentation allows data to be written to pixel circuits in two stages, reducing the delay time while avoiding the need for two simultaneous scanning lines per row, thus simplifying wiring complexity.
Solution Approach 2:
The patent dynamically switches between selecting odd-row scanning lines and even-row scanning lines across different subframe periods. This dynamic selection strategy enables efficient data transfer to all pixel circuits without requiring permanent dual scanning line infrastructure, resolving the contradiction between reducing delay and simplifying wiring.
2Productivity
If frame rate is increased to reduce delay, then the responsiveness is improved, but the resolution must be reduced
Solution Approach 1:
By segmenting the frame period into subframe periods and using alternating scanning line selection (odd rows in one subframe, even rows in the next), the patent achieves effective high frame rate operation without compromising resolution. Each pixel circuit receives its data in a dedicated time window, maintaining full resolution while improving responsiveness.
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 video data transfer time, simplifies wiring, and allows for high frame rates while maintaining resolution, improving display efficiency and performance.
Implementation Method 1
configured to be brought into an optical state in accordance with a voltage of the first data line when the first scanning line is selected
Data Source
AI summary
In an electro-optical device, pixel circuits are provided corresponding to an intersection between a scanning line in an i-th row and a data line in a k-th column in a display region, and an intersection between a scanning line and data line. The pixel circuit is brought into an optical state in accordance with a voltage of a data line when a scanning line is selected. In an odd frame period, in the i-th row selection period and the (i+1)-th row, a data signal of a voltage corresponding to the i-th row and k-th column of data of the top image is output, and in an even frame period, in the i-th row selection period and the (i+1)-th row, a data signal of a voltage corresponding to the (i+1)-th row and the k-th column of data of the bottom image is output.