Andy Stark

1
Design Analysis of a Multi-planar Emissive Flat
Panel Display
Andy Stark
ajs038000_at_utdallas.edu
Department of Electrical Engineering Erik Jonsson
School of Engineering Computer
Science University of Texas at Dallas Richardson,
Texas 75083-0688, U.S.A.
Project Results
Project Goals

• Provide design support for Stellar Micro Devices
  and their 3D Volumetric Display concept
• Gain knowledge about engineering in the workplace
  by interacting and working with professional
  engineers on an SBIR project

Analytical Model
Length of light blocked by next layer
Fraction of Light Blocked fbl
Length of light emitted at bottom layer
Transmitted Light Through N Layers
Analytical model creation. Incorporates
simplifications of overall design to allow for
ease in analysis Cell walls are green, phosphors
in orange. Light shown as rays. See report for
full mathematics.
Project Overview
TracePro Model

• Computer monitors can only display 2D projections
  of a 3D scene
• The ability to represent 3D objects is of
  critical importance for many applications
  warfighter HUDs, military command and control
  units, scientific research, medical practice, and
  desktop computers
• With a 3D volumetric display, a 3D scene could be
  rendered and displayed in all three dimensions,
  not as a mere projection.

Phosphors and Cathodes
Detecting Surfaces
Glass Substrates
Emitting Pixel
Table of modeling specifications. See graphs
below for results from each case.
Generalized TracePro model.
TracePro model of early design concept. Orange
blocks are emitting phosphors, gray lines are
cathodes. Each rectangular grouping of three
phosphors and three cathodes is one pixel (RGB).

• Core of SMDs design revolves around shrinking
  the avenues of beam combination of previous flat
  panels to the pixel level, then stacking multiple
  display layers to create a 3D image
• I supported SMDs display design process in two
  stages. In the first stage I analyzed the display
  with the intention of constructing a closed-form
  analytical expression for light transmission. In
  the second stage of modeling I took the design
  parameters and constraints identified by the
  prior analysis to effectively and efficiently
  gain meaningful data from the simulations in
  TracePro.

Project Conclusions/Outcomes

• The results of the simulations analytical
  mathematics and TracePro simulations indicate two
  important factors for consideration as SMD moves
  to the next stage of creating the 3D display
•  
• The 10 µm phosphor-width cases (1, 2, 5, 6),
  while emitting one-quarter of the total power as
  the 40 µm cases (3, 4, 7, 8), measured just as
  much total power at the top detectors. Thus
  future designs should utilize the 10 µm
  phosphor-width as much as possible.
• In the 10 µm cases, the models with 2 mm layer
  spacing showed a factor of two decrease in the
  percentage of light passed through to the top
  detectors. Accordingly, future designs should
  utilize 1 mm spacing as possible.
•  
• Given the current design geometry and set of
  specifications, including (1) and (2) from above
  will result in a 3D display with greatest light
  transmission through three layers of the display.