High-Density Tiled Display

The High-Density Display (HDD) is a one-of-a-kind tiled display system which provides high-quality high-density display capabilities for the most visually demanding applications. Our current efforts are focused on improving tile-to-tile color uniformity and increasing pixel density. Some of the unique features of this display system include:

Unique Features
Single light source Provides a single even color tempurature of white light for all tiles (even as the lamp ages).

Shared dicroic filters Provides the same red, green, and blue color hue to each tile's optics module.

Randomized fiber distribution Delivers even light intensity to each tile's optics module.

High-density Special lenses enable each tile to produce a 21-inch diagonal image (same pixels per inch as a high-quality CRT). We've even tested down to 16-inch diagonal tiles.

High-resolution Each tile can produce a native 1280x1024 pixel image. We currently have a test system which has a 3x1 tile arrangement and is planned to expand to 3x3 (3840x3072 pixels).

Unique Features
Single light source	Provides a single even color tempurature of white light for all tiles (even as the lamp ages).
Shared dicroic filters	Provides the same red, green, and blue color hue to each tile's optics module.
Randomized fiber distribution	Delivers even light intensity to each tile's optics module.
High-density	Special lenses enable each tile to produce a 21-inch diagonal image (same pixels per inch as a high-quality CRT). We've even tested down to 16-inch diagonal tiles.
High-resolution	Each tile can produce a native 1280x1024 pixel image. We currently have a test system which has a 3x1 tile arrangement and is planned to expand to 3x3 (3840x3072 pixels).

Most tiled displays (often called "Power Walls" or "Video Walls") are constructed using a matrix of video projectors which are used to produce a single large output image. Unfortunately, due to variations in optics between projector units, the output of any one tile typically does not match the color and intensity of its neighboring tiles.

Additionally, most tiled displays often occupy a great deal of space. In order to see the entire display area, the viewer must either observe from a long distance from the display, or must step closer and walk from side to side to "pan" over the image tiles.

This project attempts to address these points primarily through the development of:

Uniform tile color by using a shared light source and fiber-optics for light distribution. The destraction of tile-to-tile color differences will be minimized. Scientifically meaningful color maps will make observations of visualizations more trustworthy.
Higher-density tiles by using more tightly packed optics packages. Users will be able to view the entire display within their primary field of view and yet can still focus on detailed areas of interest without changing their physical viewing location.

For additional information:

High-Density Display Home Page

Credits:

John Moreland, Bernard Pailthorpe, San Diego Supercomputer Center, University of California, San Diego

Steve Reinch, JVC, San Diego