Subsurface Display Brightness via Rectilinear Rendering
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Solution Overview
Problem
Traditional graphical displays integrated into everyday environments often suffer from reduced brightness when covered with transmissive materials, limiting their visibility and expressiveness.
Innovation Solution
The use of rectilinear rendering techniques, where graphics are decomposed into axis-aligned rectangles and lines, allowing for parallelization of display frames, thereby increasing apparent brightness and reducing the number of frames needed to display a graphic, especially when used with passive OLED displays under transmissive materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a display is covered with transmissive material to blend into the environment, then the display can disappear when turned off, but the display brightness is greatly limited when turned on
Solution Approach 1:
The system uses temporal multiplexing to periodically activate different rows of pixels in sequence, creating the perception of a complete image while actually displaying only portions of it at any given moment. This periodic row-by-row activation allows the display to achieve high brightness during active display periods while maintaining the ability to blend into the environment when turned off or in standby mode
2Illumination intensity
If traditional rendering methods are used with transmissive materials, then the display can show graphics, but the quantity of frames required increases and apparent brightness decreases
Solution Approach 1:
The display image is segmented into multiple rows that can be independently controlled and displayed in sequence. Each row is treated as a separate segment that can be activated independently, allowing the system to display the complete image using fewer frames by showing multiple rows simultaneously within each frame rather than displaying one row per frame
Solution Approach 2:
Multiple row segments are merged and displayed simultaneously within a single frame period. By combining the display of multiple rows in one frame through temporal multiplexing, the system reduces the total number of frames needed to display a complete image, thereby increasing the apparent brightness and improving display efficiency
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 significantly enhances display brightness, enabling graphical displays to appear on demand while maintaining zero visibility when not in use, offering a cost-effective solution for ubiquitous and ambient computing applications.
Implementation Method 1
a passive organic light emitting diode (OLED) display
Data Source
AI summary
Subsurface display interfaces and associated systems and methods are provided. In some embodiments, an example method can include: dividing a graphic to be displayed into a plurality of sets of primitives, each primitive of the sets of primitives comprising a rectangle or a line; assigning the plurality of sets of primitives to display frames of a plurality of display frames; and outputting, at a display positioned under a surface and in series, the plurality of display frames.