Transparent Display Pixel Layout for Light Transmission and Detection
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Solution Overview
Problem
Transparent display and detector chips used in conjunction with image intensifier tubes face a trade-off between tube performance and display/detector performance due to the addition of detector elements, which occupy space and reduce light transmission, necessitating a configuration where two pixels are needed for each pixel of display resolution, one for display and one for detection.
Innovation Solution
The implementation of detector functionality as a subpixel of a display pixel, interdigitating detector elements with subpixels, and creating transparent regions between pixels to maximize light transmission while maintaining high display/detector capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If detector elements are added to the chip to enable light detection functionality, then detection capability is improved, but light transmission through the chip deteriorates due to increased opaque areas
Solution Approach 1:
The patent combines display and detector elements into shared pixel structures where detector elements are integrated within the same pixel area used for display. This merging allows both functions to coexist in overlapping spatial regions, reducing the total opaque area compared to separate dedicated detector pixels.
Solution Approach 2:
The pixel structure is designed to serve multiple functions simultaneously - acting as both a display element and a detector element. The same pixel area that emits light for display also detects light for sensing, eliminating the need for separate dedicated detector pixels and improving overall light transmission.
2Measurement precision
If separate detector pixels are implemented for each display pixel, then detection resolution is improved, but device complexity increases due to additional control circuits and opaque areas
Solution Approach 1:
The patent merges the control circuits for display and detection functions into shared circuitry within each pixel. The same transistor and control logic that drive the display element also control the detector element, eliminating the need for separate control circuits and reducing overall device complexity.
Solution Approach 2:
The pixel control circuit is designed to be universal, handling both display activation and detector activation functions. This multi-functional control approach reduces the total number of control circuits needed while maintaining full detection resolution capability.
3Measurement precision
If more opaque elements are added to the chip for high-resolution display and detection, then display resolution is improved, but light transmission deteriorates
Solution Approach 1:
The patent merges display and detector elements into the same pixel locations, allowing high-resolution display and detection capabilities while minimizing the total opaque area. By sharing pixel real estate, the system achieves high resolution without proportionally increasing light blocking.
Solution Approach 2:
The patent implements local quality by making specific regions of the pixel structure transparent where needed for light transmission while maintaining opaque regions only where absolutely necessary for element functionality. This selective transparency optimization allows high resolution with minimized light blocking.
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 increases light transmission through the chip by minimizing the space occupied by display and detector elements, allowing for higher resolution displays and detectors without reducing light transmission, thereby enhancing overall performance.
Implementation Method 1
one or more detectors configured to detect light
Implementation Method 2
light from the intensifier tubes passes through the digital display chips
Data Source
Figure 1
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Figure 4
AI summary
One embodiment illustrated herein includes an optical device. The optical device includes a stacked device, formed in a single semiconductor chip ,configured to be coupled in an overlapping fashion to an underlying device. The stacked device includes a plurality of optical output pixels. Each of the output pixels includes a plurality of subpixels. Each subpixel is configured to output a color of light. Each pixel is configured to output a plurality of colors of light. The optical device further includes one or more detectors, configured to detect light, interleaved with the subpixels of the pixels. The stacked device comprises a plurality of transparent regions formed in the stacked device between the pixels. The plurality of transparent regions are transparent, according to a first transmission efficiency, to light in a first spectrum. The underlying device emits light in the first spectrum.