11 TITLE OF THE INVENTION:

3D Viewing experience through true colour LED displays with simultaneous 3D / 2D viewing option

2) OWNER OF PRODUCT AND ADDRESS:

Owner:
MIC Electronics Limited A Public Limited Company

Address:
A - 4/11, Electronic Complex, Kushaiguda, Hyderabad - 500 062 INDIA.

Email: info@mic.co.in
Tel: +91 40 27122222 Fax:+91 40 27133333

Field of research:
True colour LED 3D displays

3) OBJECTS OF THE INVENTION:
The objective of this invention is to develop True colour LED 3D Displays employing a proprietary 4-in-1 chip LED - a surface mount device (SMD) package - for the pixel. In the conventional 3-in-1 chip LED pixel, used in the 2D displays, the colour information is contained in the R-G-B sub pixels and the depth dimension is created through perception. With the addition of a fourth sub pixel - Yellow - containing the depth data, to the R-G-B colour sub pixels, the display acquires capability to present 3D content in both colour and depth enabling viewers to experience 3D in an effective manner by means of adopting filter glasses, for RGB on one eye and for Y on the other. Simultaneous viewing option - for viewing either 2D or 3D - is also possible with such display; 3D by wearing glasses and 2D without glasses, both with the same degree of eye comfort. Outdoor applications are addressed by means of the optional IP65 grade package.

4) PRIOR ART:
True colour LED displays are in wide use for 2D applications as DigiPoster, OOH LED TV, Information display at Railway stations and Airports, Event coverage etc. These displays employ 3-in-1 (RGB) chip LEDs for pixel creation (alternately discrete leaded RGB LEDs are used); the pixel primarily carries the colour information -virtually 68 trillion colour combinations are realised with a 12 bit color processing technology.

Also by an innovative method of deploying these 2D boards, virtual 3D effects have been simulated and realised.

3D capabilities have also been implemented by the inventor on the same True colour Displays with suitable external arrangements :

- passive polarised filters are used both at the display and on the eye wear

- active shutters both at the display and on the eye wear working in sync with content

- autostereoscopic method without the need for glasses

In conjunction with a 3D content, this arrangement enables a 3D viewing experience by the viewer with / without the help of glasses.

The following co-pending patent applications by the inventor describe the processes in detail for the typical applications of the true colour LED Displays mentioned above

- LED DigiPoster, OOH LED TV, LED screens to function as back drops for Theatre applications simulating 3D effects and various 3D implementations etc:

Intelligent LED 'Poster' System - 2621/CHE/2008
LED Digi Poster 28.10.2008

LED TV 2141/CHE/2009
04.09.2009

A 3D display / video backdrop comprising of 2523/CHE/2010A
LED display for theatre stage or TV/FILM 30.08.2010
Production studio

3D Viewing experience through true colour LED 3782/CHE/2010
displays using passive polarised glasses 10.12.2010

3D Viewing experience through true colour LED 3783/CHE/2010
displays using active shutter glasses 10.12.2010

3D Viewing experience through autostereoscopic 0442/CHE/2011
True Colour LED Display without using glasses 15.02.2011

5) SHORTCOMINGS:
Realising 3D in the 2D display boards necessitates external add -on facilities like the following:

- passive polarised filters (colour/ circular polarisation) on the display and polarised glasses for the viewer with the same type of polarisation are needed for passive polarisation method;

- motorised control of the eye wear in synchronisation with the changes in the content is required in respect of active shutters; and

- fixing of a filtering screen in front of the LED display board is needed for the autostereoscopic 3D.

The present invention addresses the manufacture of 3D displays dispensing off with these steps. Change of the LED type is incorporated in the basic manufacturing process. The eye wear is however still needed, but with filters for RGB on one eye and for Yellow on the other eye. In addition, the displays offer a simultaneous 3D or 2D viewing option with or without glasses respectively.

6) SUMMARY OF THE INVENTION:

This invention is aimed at developing a methodology for use in the manufacture of True colour LED pixel 3D Displays. This is achieved by using a proprietary (of the Inventor), Everlight Taiwan make, 4-in-1 chip LED, in place of the conventional 3-in-1 chip LED containing only the colour information in the R-G-B sub pixels. The addition of a fourth sub pixel (Yellow) enables storing the depth information along with and enhances the picture quality (both colour and depth) while viewing the 3D content on the display. Simultaneous 3D or 2D viewing is possible on the same screen, which means that with glasses on, the images appear as 3D and with glasses taken out, the images appear as 2D with same eye comfort. Optional IP65 environmental protection feature of the proprietary LED package further enables its use in Outdoor applications.

7) BRIEF DESCRIPTION
To view 3D content on 2D LED displays, techniques have been developed and designs are underway. These typically include the use of passive polarised glasses; or active shutter glasses; or an autostereoscopic method of viewing 3D without glasses. These techniques present two separate images of the same still / video frame for the two eyes, which are mixed in the human brain and visualised as a 3D image, adding the third dimension of depth as a perception.

In this invention, a proprietary method to realise True colour 3D LED Displays in the basic module manufacturing process is disclosed. A new 4-in-1 chip LED with the four colours - Red, Green, Blue and Yellow - packaged in a single chip is developed by Everlight Electronics Taiwan, for the Inventor, and used in place of the conventional 3-in-1 chip LED. The colour information of the image is contained in the RGB sub pixels while the depth data is contemplated by means of the additional Yellow sub-pixel. The eye wear, however, is also needed, but with filters for RGB on one eye and for Yellow on the other eye.

This LED Display facilitates simultaneous 2D or 3D viewing option. When the 3D content is displayed, 3D images can be viewed comfortably with the help of glasses. Without the glasses, images on the screen can be viewed in 2D with the same eye comfort. This option is a useful feature, because with other 3D viewing methods, a screen showing 3D content can be visualised as 3D only on wearing glasses; and without glasses, the display does not make any meaningful image.

8) TARGETED SPECIFICATIONS - A Typical Configuration
Panel

Pixel LED R-G-B-Y 4-in-1 Chip LED (6 pin SMD)
LED Everlight part No. 63-B245 (proprietary of the inventor)
Pixel Pitch 9.525 mm (usually referred as 9mm)
Panel size 12" X 9"
Pixel Resolution 32 X 24
No of Pixels i.e. LEDs 768

Display
Overall Size 110" Diagonal in LED TV configuration
Dimensions 8' X 4.5'
Panel matrix 8X6
No of Panels 48
Pixel Resolution 256 X 144
Total No. of Pixels i.e. LEDs 36864
Aspect Ratio HD(16:9)
Video Input Composite video, S-Video
(TV / Cable / DTH / Live or Stored content)
Audio

Standard Commercial Dolby sound system
Power 230V AC / Generator back up
Mounting Schemes / options Uni-pole, Bi-pole, Structure, Trolley or Vehicle
mounted

Targeted Applications
This methodology is adopted for use in manufacture of True colour LED 3D Displays for use in several applications:

Indoors
Functions & Events Movie theatres Clubs and resorts

OOH LED TVs in Corporate / Government offices
Training and Simulation in medical and aerospace applications
Video malls etc.

Outdoor applications
Billboards
Drive-in-theatres
Sports (Live-casts inside or outside the stadia)
Mass communication applications for infotainment etc.

9) CLAIMS:
I/We Claim:

1. A methodology for viewing 3D content on the True colour LED Displays employing a proprietary 4-in-1 chip LED, a surface mount device (SMD) package for the pixel.

2. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein this is achieved by using a proprietary (of the inventor) 4-in-1 RGBY chip LED, Everlight Taiwan make, in place of the conventional 3-in-1 chip LED containing the colour information in the R-G-B sub pixels.

3. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein the colour information of the image is contained in the RGB sub pixels while the depth data is contemplated by means of the additional Yellow sub-pixel.

4. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein the addition of a fourth sub pixel (yellow) with depth data enables visualization of full colour and depth while viewing the 3D content on the display.

5. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein the eye wear is needed, with filters for RGB on one eye and for Yellow on the other eye.

6. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein simultaneous viewing option for 2D or 3D is also possible with such display - 3D by wearing glasses and 2D without glasses, both with the same degree of eye comfort.

7. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein, the chip LED package is also designed with option for IP65 environmental protection enabling its use for outdoor applications also.

8. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein this methodology is adopted manufacture of True colour LED 3D Displays for use in several applications like Movie theatres, Clubs / resorts and Training / Simulation in medical / aerospace applications etc in indoors and Drive-in-theatres and Billboards for outdoors.

9. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein a Pixel Pitch of 9mm and resolution of 256 X 144 pixels are realisable on a typical 110" Diagonal (8' X 4.5') - LED TV configuration with an Aspect Ratio suitable for HD (16:9).

10. The methodology for viewing 3D content on the True colour LED Displays of claim 1 wherein the present invention eliminates the need for additional work on the display screen like fixing filter or shutter glasses etc to realise 3D viewing.