GB2442035A - Flat Screen 3D LCD Display - Google Patents

Flat Screen 3D LCD Display Download PDF

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Publication number
GB2442035A
GB2442035A GB0618395A GB0618395A GB2442035A GB 2442035 A GB2442035 A GB 2442035A GB 0618395 A GB0618395 A GB 0618395A GB 0618395 A GB0618395 A GB 0618395A GB 2442035 A GB2442035 A GB 2442035A
Authority
GB
United Kingdom
Prior art keywords
display
lcd
display according
attached
polarised
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0618395A
Other versions
GB0618395D0 (en
Inventor
Paul Bird
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0618395A priority Critical patent/GB2442035A/en
Publication of GB0618395D0 publication Critical patent/GB0618395D0/en
Publication of GB2442035A publication Critical patent/GB2442035A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • H04N13/04—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/337—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using polarisation multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Liquid Crystal (AREA)

Abstract

A 3D or stereoscopic display comprises an upper LCD display 1 without polarisers (or stripped of polarisers) for altering the polarisation of an image from a lower, second LCD display 2 of similar resolution which displays an image or movie. The bottom display LCD 2 may have polarisers that are either intact or attached, and a light source 3 is underneath both LCDs. The upper display can omit colour filters. Upper LCD display 1 may show a black and white striped or checked pattern, for example to cause polarization rotation; these patterns may be either generated by a control board 4, attached for feeding and changing patterns to the top display, or be permanently displayed on upper LCD 1. The display is used with common lightweight polarised glasses to view 3D 'field sequential' or other formats of 3D media. Media devices can be attached temporarily or permanently to the display via a connection 5.

Description

Flat Screen 3D Display This invention relates to a flat panel 3D LCD
display which is simple to manufacture.
3D movies have been shown in cinemas from some time now have lately been increasing in popularity due to the combination of digital 3D movies and digital projectors. The modern versions consist of images from the left-eye and right-eye perspectives projected onto a screen. The two projections are first passed through orthogonal polarised filters. When polarised glasses are worn each eye sees the correct perspective.
The trouble with most attempts at making a 3D display for home use for watching 3D films, for example, is that they are often expensive, bulky and difficult to make and sometimes require bulky headware. Hence this invention is a simple way of putting together a flat 3D LCD display from readily available components in a novel way. This invention can be easily made from the components of a two identical LCD screens.
A normal LCD display consists of an electronic liquid crystal array' sandwiched between two orthogonal polarisers. Because of the polarisers the light passing through the display is polarised in one direction. As in the 3D cinema, a 3D display needs two perspectives in orthogonal polarisations. In order to achieve this, a second identical liquid crystal array is placed on top, this time without, or stripped of, the two polarisers. When an image of black and white stripes, say, is fed to the second liquid crystal array display, this has the effect of rotating the polarised light going through what would have been the white stripes. The amount of rotation can be controlled precisely by varying the brightness of the white stripes.
To display a 3D image you take two perspective images and interlace them together e.g. a line from one followed by a line from the other and so on, and display this on the bottom LCD display. Some 3D movies such as field sequential' movies are already in this format. The second display on top then separates out the images by rotating the light only from the lines of one of the images. Cheap lightweight 3D polarised glasses can then be worn to view the 3D image. Without the glasses one can view normal 2D images on the display since the top display is transparent. 3D polarised glasses are the same as used in cinemas and comprise of two orthogonal polarised filters attached to a frame so that one filter is placed over each eye.
One advantage of this technique, apart from being very simple to manufacture is that different 3D image formats can be displayed. For example, images interlaced both horizontally, vertically or in a checked pattern can be displayed by changing the pattern of the second display. The top display can be connected to a simple circuit board which outputs either horizontal or vertical stripes for example.
Types of 3D movies that can be displayed using this invention include field sequential' 3D movies which were originally designed for use with LCD shutter glasses and CRT monitors.
This technique can be used for any size display such as LCD Televisions, LCD monitors and LCD displays on cameras although it works best on LCDS with a large number of lines such as high definition displays. Because this invention uses the same standard parts as an LCD display it means that any product which uses a LCD display can, with not much effort, be made in a 3D display version.
To improve the quality of the 3D display, quarter-wave retarder film' or an equivalent filter can be placed over the display which turns linear polarised light into circular polarised light. Circularly polarised 3D glasses can then be worn which allows the user to tilt their head to a greater degree without disrupting the 3D effect.
The display can also be used as a component of a projector by adding a stronger backlight and a lens to focus the image onto
a suitable surface.
The invention will now be described by way of example and with reference to accompanying drawings in which: Figure 1 shows the layers of the 3D display from a side.
Figure 2 shows the 3D display from the front.
An LCD display 2 is placed above a light source 3. Another LCD display of identical horizontal or vertical pixel resolution without, or stripped of, the polarisers is attached on top of this as close as possible and lined up precisely (which can done easily if both displays are turned on and fed a pattern).
An electronic control board 4 can optionally be attached to the top display for a user to select a desired pattern such as horizontal black and white stripes. The input of the bottom display 5 can be connected to a media output device or devices or via a circuit board. The media output device can optionally also be connected to the input of the top display or control board to control both displays. The inputs of either display can optionally be connected to wireless receivers.
The layers of the display can be bound together, for example with a metal encasing, which leaves the display area clear.
The display can optionally be attached to a stand.

Claims (9)

  1. Claims 1. A 3D display comprising an LCD display with another similar
    LCD display attached on top this time without any, or stripped of, polarisers and which may not have the colour filters in it and a light source behind the display which can be used with standard polarised glasses for viewing 3D media.
  2. 2. A 3D display according to claim 1 attached to an electronic circuit for displaying a pattern or various patterns on the top LCD for filtering the output of the lower LCD.
    3. A 3D display according to claim 1 with an input for each LCD, one for feeding in media and one for feeding in the pattern where the inputs can be connected to media devices.
  3. 3. A 3D display according to claim 2 with buttons or other inputs for selecting different patterns on the top display.
  4. 4. A 3D display according to claim 1 embedded in an electronic device such as a DVD player, television signal receiver, hard disk or media reader for displaying media content which controls both displays.
  5. 5. A 3D display according the claim 1 where the liquid crystals in the upper display have been fixed in a pattern and no longer require an electrical input.
  6. 6. A 3D display according the claim 1 with quarter-wave retarder film or equivalent filter placed on the display to turn to linear polarised light into circular polarised light and allow greater head movement to be viewed with circularly polarised 3D glasses.
  7. 7. A 3D display according to claim 1 in which the position of the top display can be adjusted.
  8. 8. A 3D projector which uses the 3D display according to claim 1 with a stronger backlight and an added lens or lenses in front of the display to focus to image onto a suitable surface.
  9. 9. A 3D display according to claim 1 in which the 3D polarised glasses are attached to the display or a similar viewer with orthogonal polarised filters is attached, at a distance, to the front of the display which the viewer has to look through.
GB0618395A 2006-09-19 2006-09-19 Flat Screen 3D LCD Display Withdrawn GB2442035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0618395A GB2442035A (en) 2006-09-19 2006-09-19 Flat Screen 3D LCD Display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0618395A GB2442035A (en) 2006-09-19 2006-09-19 Flat Screen 3D LCD Display

Publications (2)

Publication Number Publication Date
GB0618395D0 GB0618395D0 (en) 2006-11-01
GB2442035A true GB2442035A (en) 2008-03-26

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ID=37421213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0618395A Withdrawn GB2442035A (en) 2006-09-19 2006-09-19 Flat Screen 3D LCD Display

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102971660A (en) * 2010-07-08 2013-03-13 夏普株式会社 Active shutter glasses and three-dimensional image recognition unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477882A2 (en) * 1990-09-28 1992-04-01 Honeywell Inc. Full color three-dimensional flat panel display
JPH04156419A (en) * 1990-10-19 1992-05-28 Natl Aerospace Lab Two-image simultaneous display panel
GB2317524A (en) * 1996-09-19 1998-03-25 Sharp Kk Three dimensional stereoscopic projection display

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0477882A2 (en) * 1990-09-28 1992-04-01 Honeywell Inc. Full color three-dimensional flat panel display
JPH04156419A (en) * 1990-10-19 1992-05-28 Natl Aerospace Lab Two-image simultaneous display panel
GB2317524A (en) * 1996-09-19 1998-03-25 Sharp Kk Three dimensional stereoscopic projection display

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102971660A (en) * 2010-07-08 2013-03-13 夏普株式会社 Active shutter glasses and three-dimensional image recognition unit
EP2592464A1 (en) * 2010-07-08 2013-05-15 Sharp Kabushiki Kaisha Active shutter glasses and three-dimensional image recognition unit
EP2592464A4 (en) * 2010-07-08 2014-08-13 Sharp Kk Active shutter glasses and three-dimensional image recognition unit
US8922724B2 (en) 2010-07-08 2014-12-30 Sharp Kabushiki Kaisha Active shutter glasses and three-dimensional image recognition unit
CN102971660B (en) * 2010-07-08 2015-11-25 夏普株式会社 Active shutter glasses and three-dimensional image recognition unit

Also Published As

Publication number Publication date
GB0618395D0 (en) 2006-11-01

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