3D movies, 3D photography, 3D graphics, 3D VRML, 3D games on each LCD

Why such simple and cheap technology is not used to add 3D for all LCD displays? What is wrong?

Top of standard LCD screen must be covered not with "continuous" but with "chess" polarizer sheet.

Polarizer sheet "continuous" (standard)
polarizer sheet on top of LCD screen		 "chess"
polarizer sheet on top of LCD screen

View with 3D polarized glasses.

L - Pixels for Left eye (from image's left frame).
R - Pixels for Right eye (from image's right frame).

 ("Left-Right" image format)
LCD screen with "chess" polarizer show merged image pixels:    
WITHOUT glasses

   LEFT eye see

 RIGHT eye see

  

PROBLEMS AND SOLUTIONS

• Backlight | • Liquid crystals(R+G+B) | • Polarizer sheet

"Continuous" (standard) polarizer sheet on LCD screen and standard Liquid crystals positions.
Backlight transmittance is good: Left 100% / Right 100%

"Chess" polarizer sheet on LCD screen and standard Liquid crystals positions.
With standard liquid crystals position (control) backlight transmittance is bad: Left 100% / Right 0%

To fix backlight problem, every second liquid crystal group (Pixel-RGB) must be rotated in direct [inverse] ratio than before... so the backlight could pass through "chess" polarizer sheet as before. This could be done by software or hardware.

"Chess" polarizer on LCD screen and rotated 90o Liquid crystals(R+G+B).
Backlight transmittance is good again (Left 100% / Right 100%).

Standard New settings
0o 90o
45o 45o
90o 0o

How 3D "chess" polarizer transmittance problem could be fixed by software or hardware. There are two ways:

(A) "Send" to LCD screen unchanged signal and inverse liquid crystals where is horizontal polarization
(B) "Send" to LCD inversed signal where is horizontal polarization (liquid crystals work as usual).

(B) "Send" to LCD inversed signal(2F) where is horizontal polarization - liquid crystals work as usual.

FF - vertical position (90o) of liquid crystals.
88 - medium position (45o) of liquid crystals.
00 - horizontal position (0o) of liquid crystals.

To get the same results on first(1) and second(2) pixels, signal for second pixel must be inverted(FFFF00 > 0000FF). Because polarization(B) of second(2) pixel is opposing to first(1) pixel (horizontal-vertical).

Let's say, that both pixels at the end (E) must show yellow color.

1 – First pixel (standard-vertical polarization).
2 – Second pixel (new-horizontal polarization).
2F – Fixed (inverted signal) for second pixel.

A – Signal (Pixels color / original color is yellow - FFFF00).
B – Pixel's polarization.
C – Liquid crystal's position (vertical ... horizontal).
D – LCD screen show.
E – User see.

Left and Right frames in one image

Software or Hardware invert Right frame

Software or Hardware cut Pixels of Right frame in "chess" order

Right frame placed on top of Left frame

Image for LCD screen LCD screen with "chess" polarizer shows User with polarized glasses see 3D image

Point of this method:
1. No need high refresh rate (Hz).

2. Cheep upgrade from 2D to 3D for each LCD.
3. Quality depends just on resolution. Bigger resolution - less "grain" (on 1600x1200 "grain" is not visible).

4. Brightness for 3D mode can be raised.
5. Without polarized glasses LCD looks the same as before.
6. LCD has more potentiality than CRT.

New LCD must have software or hardware which converts picture, movie, game, etc. (send to monitor) from available 3D stereo standard to "chess" mode

>
Left-Right Top-bottom Top-bottom 5% Interlaced
Horizontal		 Interlaced
Vertical		   Chess

Vaidotas Jocys
vaidotas@jocys.com
www.jocys.com

www.jocys.com/lcd/
www.jocys.com/hardware/lcd/

Created and published: (2003.06.17)

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