July 2001 3D – LCDYossi Appelbaum

3D – LCD

Post Pc Computing - 2001

July 2001 3D – LCDYossi Appelbaum

Basic Structure

• Stacked clear LCD’s

• Image is accepted in 3Dby ‘slicing’ the original picture

July 2001 3D – LCDYossi Appelbaum

Main Applications• Medical use - Ultrasound imaging , etc.

• Geographical usage – GPS map displays• Games

July 2001 3D – LCDYossi Appelbaum

Other 3D technologies (I)

• Stereoscopic systems - such as 3D cinema(special glasses are needed)

July 2001 3D – LCDYossi Appelbaum

Other 3D technologies (II)

• Micro lens array over an LCD (Philips)

3D-LCD cross section

3D-LCD pixel projection

July 2001 3D – LCDYossi Appelbaum

Stacked LCD advantages

• More than one person at a given moment

• Almost unlimited viewing angles

• Ease of use (no glasses needed)

• No limited distance of viewing

July 2001 3D – LCDYossi Appelbaum

Potential Disadvantages

• Low horizontal resolution caused by the structure of multiple layers

• Back light necessary

July 2001 3D – LCDYossi Appelbaum

Technology Status

• Clear LCD’s

• Processing unit capable of handling multiple screens

• Back light

• 3D picture computation methods and tools

July 2001 3D – LCDYossi Appelbaum

Predicted Difficulties in Development (I)

• LCD alignment in stack:1. Polarizing filter alignment

July 2001 3D – LCDYossi Appelbaum

• LCD alignment in stack:2. Color filters alignment (for color displays)

Predicted Difficulties in Development (II)

July 2001 3D – LCDYossi Appelbaum

Predicted Difficulties in Development (III)

• Heat distribution – at least 50% of the light is absorbed in the display

July 2001 3D – LCDYossi Appelbaum

Size * Power Consumption –

for a single LCD

2’’ – 3.9’’ 55mW – 92mW

6.5’’ – 10’’ 0.8W – 1.52W

Power Consumption

• Option - Save power by refreshing the screen only when needed.

* SHARP – off the shelf LCD’s

July 2001 3D – LCDYossi Appelbaum

Price Estimate – Market Demand

July 2001 3D – LCDYossi Appelbaum

Price Estimate (II)

15’’ LCD monitor:

• August 1999 – under $1100

• By December 2001 – under $500

Suppose a 10 layer 3D-LCD = approx. $5000

July 2001 3D – LCDYossi Appelbaum

Next Steps

• Build a simple B&W prototype, and study it

• Study the needs of a human eye for 3D vision:1. Depth resolution2. Moving objects – refresh rate in 3D3. Layer structure (overlapping images)

• Proceed with a color prototype

July 2001 3D – LCDYossi Appelbaum

There is only one problem…

The 3D-LCD is physically impossible!!!

LCD Layer