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WO2012038856A1 - Dispositif d'affichage de vues multiples - Google Patents

Dispositif d'affichage de vues multiples Download PDF

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Publication number
WO2012038856A1
WO2012038856A1 PCT/IB2011/053994 IB2011053994W WO2012038856A1 WO 2012038856 A1 WO2012038856 A1 WO 2012038856A1 IB 2011053994 W IB2011053994 W IB 2011053994W WO 2012038856 A1 WO2012038856 A1 WO 2012038856A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight
display
view
illumination
light
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.)
Ceased
Application number
PCT/IB2011/053994
Other languages
English (en)
Inventor
Marcellinus Petrus Carolus Michael Krijn
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2012038856A1 publication Critical patent/WO2012038856A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • 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
    • H04N13/356—Image reproducers having separate monoscopic and stereoscopic modes
    • H04N13/359—Switching between monoscopic and stereoscopic modes
    • 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
    • G02B30/26—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 autostereoscopic type
    • G02B30/27—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 autostereoscopic type involving lenticular arrays

Definitions

  • This invention relates to a multi-view display device of the type that comprises a display panel having an array of display pixels for producing a display and an imaging arrangement for directing different views to different spatial positions.
  • Multi-view display devices can be for providing different views to different locations (for example a driver and his front seat passenger) or for generating an
  • a first example of an imaging arrangement for use in this type of display is a parallax barrier, for example with slits that are sized and positioned in relation to the underlying pixels of the display.
  • a parallax barrier for example with slits that are sized and positioned in relation to the underlying pixels of the display.
  • the barrier is positioned in front of the display panel and is designed so that light from the odd and even pixel columns is directed towards the left and right eye of the viewer. Hence, the viewer perceives different views of an image the left and right eye, creating the 3D experience.
  • the barrier is such that the views are separated to such an extent that they end up at positions allowing different viewers to see one of the views to create a dual-view 2D display.
  • a drawback of this type of two-view 3D display design is that the viewer has to be at a fixed position, and can only move approximately 3 cm to the left or right.
  • the parallax barrier arrangement is simple to produce but is not light efficient.
  • a preferred alternative is therefore to use a lens arrangement as the imaging arrangement.
  • an array of elongate lenticular elements can be provided extending parallel to one another and overlying the display pixel array, and the display pixels are observed through these lenticular elements.
  • the lenticular elements are provided as a sheet of elements, each of which comprises an elongate semi-cylindrical lens element.
  • the lenticular elements extend in the column direction of the display panel, with each lenticular element overlying a respective group of two or more adjacent columns of display pixels.
  • each lenticule is associated with two columns of display pixels
  • the display pixels in each column provide a vertical slice of a respective two dimensional sub-image.
  • the lenticular sheet directs these two slices and corresponding slices from the display pixel columns associated with the other lenticules, to the left and right eyes of a user positioned in front of the sheet, so that the user observes a single stereoscopic image.
  • the sheet of lenticular elements thus provides a light output directing function.
  • each lenticule is associated with a group of four or more adjacent display pixels in the row direction. Corresponding columns of display pixels in each group are arranged appropriately to provide a vertical slice from a respective two dimensional sub-image. As a user's head is moved from left to right, a series of successive, different, stereoscopic views are perceived creating, for example, a look-around impression.
  • the above described device provides an effective three dimensional display.
  • One way to implement this is to provide an electrically switchable lenticular array.
  • the lenticular elements of the switchable device operate in a "pass through" mode, i.e. they act in the same way as would a planar sheet of optically transparent material.
  • the resulting display has a high resolution, equal to the native resolution of the display panel, which is suitable for the display of small text characters from short viewing distances.
  • the two-dimensional display mode cannot, of course, provide a stereoscopic image.
  • a major dilemma is caused by the fact that on the one hand a large number of views per angle is needed for a good 3D impression and on the other hand a small number of views is needed for a sufficiently high resolution (i.e. number of pixels) per view.
  • a high number of views means the image resolution per view is reduced because the total number of available pixels of the display panel has to be distributed among the views.
  • the perceived resolution of each view along the horizontal direction will be reduced by a factor of n relative to the 2D case.
  • the resolution will remain the same.
  • the use of a barrier or lenticular that is slanted can reduce this disparity between resolution in the horizontal and vertical direction. In that case, the resolution loss can be distributed evenly between the horizontal and vertical directions.
  • the material parameters of the LC layer and replica have to be chosen very carefully in order not to get a residual lens action in the 2D mode. There still may be a residual lens action when viewing the display at an angle. In other words, the 2D mode is compromised.
  • the shape of the replica has to be very accurate and an LC-based switchable lenticular is relatively expensive.
  • the device of the invention has a backlight arrangement which has a first backlight device for generating illumination in the form of a set of spaced lines. This is used to illuminate the display panel to project different images to different spatial locations and thereby provide multi-view output.
  • a second backlight device is provided for generating illumination in the form of a continuous area of illumination covering the backlight output area. This is for a single-view mode.
  • This approach locates the measures to provide single- view-multi- view switching behind the display panel as part of the backlight design instead of in front of the display panel.
  • both backlight devices are illuminated whereas in a multi-view mode only the first backlight device is illuminated.
  • Each backlight device can comprise an edge lit illumination panel. This means a mature technology can be used for the two backlight arrangements.
  • the set of spaced lines of the first backlight arrangement can be defined by painted areas on a surface of the panel or by surface contours on a surface of the panel.
  • the invention can be used for an autostereoscopic display device or for a multi-view display.
  • the invention also provides a method of operating a display device as claimed in claim 10.
  • Fig. 1 is a schematic perspective view of a known autostereoscopic display device
  • Fig. 2 shows how a lenticular array provides different views to different spatial locations
  • Fig. 3 shows a display device of the invention
  • Fig. 4 is used to show more clearly the mult i- view generation.
  • the known device 1 of Fig. 1 comprises a liquid crystal display panel 3 of the active matrix type that acts as a spatial light modulator to produce the display.
  • the display panel may also be of the passive type e.g. in case of smaller area displays.
  • the display panel 3 has an orthogonal array of display pixels 5 arranged in rows and columns. For the sake of clarity, only a small number of display pixels 5 are shown in the Figure. In practice, the display panel 3 might comprise about one thousand rows and several thousand columns of display pixels 5.
  • the structure of the liquid crystal display panel 3 is entirely conventional.
  • the panel 3 comprises a pair of spaced transparent glass substrates, between which an aligned twisted nematic or other liquid crystal material is provided.
  • the substrates carry patterns of transparent indium tin oxide (ITO) electrodes on their facing surfaces.
  • Polarizing layers are also provided on the outer surfaces of the substrates.
  • Each display pixel 5 comprises opposing electrodes on the substrates, with the intervening liquid crystal material therebetween.
  • the shape and layout of the display pixels 5 are determined by the shape and layout of the electrodes.
  • the display pixels 5 are regularly spaced from one another by gaps.
  • Each display pixel 5 is associated with a switching element, such as a thin film transistor (TFT) or thin film diode (TFD).
  • TFT thin film transistor
  • TFD thin film diode
  • the display pixels are operated to produce the display by providing addressing signals to the switching elements, and suitable addressing schemes will be known to those skilled in the art.
  • the display panel 3 is illuminated by a light source 7 comprising, in this case, a planar backlight extending over the area of the display pixel array. Light from the light source 7 is directed through the display panel 3, with the individual display pixels 5 being driven to modulate the light and produce the display.
  • a light source 7 comprising, in this case, a planar backlight extending over the area of the display pixel array. Light from the light source 7 is directed through the display panel 3, with the individual display pixels 5 being driven to modulate the light and produce the display.
  • the display device 1 also comprises a lenticular sheet 9, arranged over the display side of the display panel 3, which performs a view forming function.
  • the lenticular sheet 9 comprises a row of lenticular elements 11 extending parallel to one another, of which only one is shown with exaggerated dimensions for the sake of clarity.
  • the lenticular elements 11 are in the form of convex cylindrical lenses, and they act as a light output directing means to provide different images, or views, from the display panel 3 to the eyes of a user positioned in front of the display device 1.
  • Fig. 1 also shows schematically a controller 13 for driving the display device.
  • the autostereoscopic display device 1 shown in Fig. 1 is capable of providing several different perspective views in different directions.
  • each lenticular element 11 overlies a small group of display pixels 5 in each row.
  • the lenticular element 11 projects each display pixel 5 of a group in a different direction, so as to form the several different views.
  • the user's head moves from left to right, his/her eyes will receive different ones of the several views, in turn.
  • a light polarizing means must be used in conjunction with the above described array, since the liquid crystal material is birefringent, with the refractive index switching only applying to light of a particular polarization.
  • the light polarizing means may be provided as part of the display panel or the imaging arrangement of the device.
  • Fig. 2 shows the principle of operation of a lenticular type imaging arrangement as described above and shows the backlight 20, display device 24 such as an LCD and the lenticular array 28.
  • Fig. 2 shows how the lenticular arrangement 28 directs different pixel outputs to different spatial locations.
  • the invention is based on the use of a striped backlight to illuminate different pixels in different directions, in order to generate multiple spatially separated views.
  • a second backlight is provided.
  • Fig. 3 shows an example of a display of the invention.
  • a 2D-3D switchable display is shown based on a regular LCD panel 30 such as e.g. that described for the known device of Fig. 1 in combination with two backlights 32, 34.
  • Both backlights are based on a light-guide.
  • Light of several LEDs 36 is coupled into each light guide from one or more edges. Light travels within this light-guide by total-internal-reflection (TIR) which is virtually loss-less.
  • TIR total-internal-reflection
  • Light is coupled out of the light guide by means of an out-coupling structure.
  • the out-coupling structure can consist of dots or lines of paint. Alternatively, it can consist of surface indentations having a certain shape or roughness.
  • the out-coupling structure consists of a pattern of thin parallel lines 33 spaced apart at some distance (pu ne in Fig. 3).
  • the result will be a pattern of line sources.
  • These line sources in combination with the pixels of the LCD panel enable rendering 3D: the location of each pixel relative to the location of an underlying line source determines a view direction.
  • Each pixel corresponds to several similar views (equivalent to the repeated view phenomenon arising in lenticular arrangements).
  • There are cones of views with unique views within each cone. The angular size of each cone of views is (by approximation): Q r n ⁇ - c d
  • n is the effective index of refraction of the material in between the pixels and the line sources whereas d is the physical distance between pixels and line sources.
  • Fig. 4 shows more clearly how the multiple views are formed, for 3 views, VI , V2, V3.
  • the pitch between the light lines is an integer multiple of the (sub-) pixel pitch, so that each light line generates the same set of angles to the pixels above. In this way, the same set of illumination directions is generated from each light line.
  • the dotted lines show the view repetitions which arise in the next viewing cone.
  • the pitch does not necessarily have to be an integer times the (sub-) pixel pitch; a non- integer number is also allowed. This is similar to the case where there is a lenticular in front of a display panel having a pitch that is a non- integer times the sub-pixel pitch. This helps to reduce the moire effect caused by the periodic nature of the pixel array with black matrix and the lenticular array.
  • the overall width of the field of view will be limited by the total internal reflection within the light guide - in that beyond a given angle, the light from the line light source will not escape from the light guide, and will continue a total internal reflection path within the light guide, until it is again scattered by the light source.
  • the rays that leave the light-guide will leave it up to angles of 90 degrees. When travelling through the display panel these rays are refracted towards a direction normal to the panel and do not fulfill the condition for TIR. Thus, all rays that leave the light guide will be able to travel through the panel.
  • the width of the line sources should be small (wnallow e in Fig. 3). In practice, it should not exceed the sub-pixel pitch p pixe i. If the line source width is too large, the individual 3D views will become broadened to a level that is unacceptable.
  • the second edge-lit light-guide 34 enables a 2D mode, and resembles the first light-guide 32, the difference being that it provides a uniform illumination of the LCD panel.
  • the out-coupling structure on this light-guide is such that a uniform illumination is obtained.
  • the first light-guide 32 is substantially transparent for the light produced by the second light- guide.
  • the line sources For the first light-guide 32, light emitted by the line sources should be emitted towards the LCD panel only: light that is emitted into the wrong direction can scatter from the out-coupling pattern of the second light-guide and result into a loss of contrast in each 3D view.
  • white paint for the out-coupling structure that is thick enough not to let light through or is coated with an absorbing or reflective layer.
  • the width of the light-emitting lines may vary across the light-guide in order to ensure that each line produces the same amount of light. In case the width of all lines is equal, lines furthest away from the LEDs will produce less light than others since at that location there is less light left inside the light-guide.
  • the out-coupling structure does not necessarily have to consist of straight lines.
  • the lines may be staggered.
  • the structure may also be a two-dimensional pattern of line segments.
  • a diffuser may be located in between the two light-guides 32,34 to provide a more uniform illumination in the 2D mode.
  • the LEDs of the first light guide 32 used for the 3D mode should be driven such that the intensity produced by the light-emitting lines of the first light- guide 32 equals that of the light emitted by the second (2D mode) light-guide 34. This ensures that the light-emitting lines of the first light guide 32 remain invisible in the 2D mode.
  • the second light-guide 34 can be any common backlight technology delivering a uniform illumination, including technologies that do not require a light-guide.
  • the invention thus provides a switchable multi-view display having a regular backlight for a single-view (e.g. 2D) mode and between this backlight and an LCD panel there is an array of closely spaced narrow line sources.
  • the array of line sources is produced by an edge-lit light-guide having line-shaped out-coupling structures. These produce light directed towards the LCD panel and not in the opposite direction, towards the regular backlight.
  • the backlight responsible for the 2D mode is switched off, whereas in the 2D mode, the line sources responsible for the 3D mode are switched such as to emit a light level that masks their presence.
  • the switching between modes can be implemented by the controller (13 in Fig. 1) and under the control of a computer program.
  • the mode switching can be manually performed by the user, or it can be implemented automatically based on detection of the format of the image content being displayed.
  • ⁇ is the wavelength of the light and c is some constant of order unity.
  • ⁇ is the wavelength of the light and c is some constant of order unity.
  • n is the effective index of refraction of the material in between the pixels and line sources and d is the physical distance between the pixels and line sources (see Fig. 3).
  • the example above uses a liquid crystal display.
  • the advantages of the invention can be obtained when other illuminated display technologies are employed.
  • the invention applies to any display arrangement which uses an illumination source and a shutter- type pixellated display.
  • the invention has been described in connection with autostereoscopic displays.
  • the invention can also be applied to multi-view displays in which different images are provided to different spatial locations; but these generally are different monoscopic (2D) images for different viewers at different positions although they may also be different stereoscopic images for the different viewers or a combination.
  • Such displays are often referred to as dual view displays or split screen displays.
  • the light out-coupling structure can be a surface coating such as paint or else a surface patterning or shaping, such as triangular grooves (to change the reflection angle and thereby permit escape from the light guide) or surface roughening for example by sandblasting.
  • a surface patterning or shaping such as triangular grooves (to change the reflection angle and thereby permit escape from the light guide) or surface roughening for example by sandblasting.
  • stripes of light emitting material may be used, such as phosphor (yellow) or organic luminescent material.
  • blue light could be coupled into the light guide, and white light could be generated and released from the light guide.
  • the preferred implementation has both light guides on for the single- view (2D) mode. However, this is not essential, particularly if the line sources of the first backlight are small enough that the shadow they create of the second backlight is not perceptible by the viewer. If the shadow is perceptible, the first backlight is turned on to regenerate a uniform illumination field.
  • a computer program may be stored/distributed on a suitable medium, such as an optical storage medium or a solid-state medium supplied together with or as part of other hardware, but may also be distributed in other forms, such as via the Internet or other wired or wireless telecommunication systems. Any reference signs in the claims should not be construed as limiting the scope.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention se rapporte à un dispositif d'affichage qui comprend un système de rétroéclairage qui comprend un premier dispositif de rétroéclairage permettant de produire un éclairage sous la forme d'un ensemble de lignes espacées. Ceci est utilisé pour éclairer le panneau d'affichage afin de projeter différentes images sur différents emplacements spatiaux et, de ce fait, produire une sortie à vues multiples. Un second dispositif de rétroéclairage est conçu pour produire un éclairage sous la forme d'une zone d'éclairage continue qui recouvre la zone de rétroéclairage. Ceci est destiné à un mode à une seule vue.
PCT/IB2011/053994 2010-09-21 2011-09-13 Dispositif d'affichage de vues multiples Ceased WO2012038856A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10177825 2010-09-21
EP10177825.6 2010-09-21

Publications (1)

Publication Number Publication Date
WO2012038856A1 true WO2012038856A1 (fr) 2012-03-29

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PCT/IB2011/053994 Ceased WO2012038856A1 (fr) 2010-09-21 2011-09-13 Dispositif d'affichage de vues multiples

Country Status (2)

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TW (1) TW201218179A (fr)
WO (1) WO2012038856A1 (fr)

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JP2015069210A (ja) * 2013-09-27 2015-04-13 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． 多視点映像を提供するディスプレイ装置及び方法
WO2017131807A1 (fr) 2016-01-30 2017-08-03 Leia Inc. Rétroéclairage faisant intervenir un élément à faisceaux multiples et affichage faisant appel à celui-ci
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US12189168B2 (en) 2019-08-25 2025-01-07 Leai Inc. Backlight scattering element, multiview display, and method having high-index light guide layer
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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102508368B1 (ko) 2015-12-29 2023-03-08 엘지디스플레이 주식회사 백라이트 유닛과 그를 포함하는 무안경 3d 표시장치
KR20170079443A (ko) * 2015-12-30 2017-07-10 엘지디스플레이 주식회사 백라이트 유닛과 그를 포함하는 무안경 3d 표시장치
TWI632540B (zh) * 2018-01-15 2018-08-11 友達光電股份有限公司 顯示裝置及其切換顯示視角的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5897184A (en) * 1996-07-02 1999-04-27 Dimension Technologies, Inc. Reduced-thickness backlighter for autostereoscopic display and display using the backlighter
US20070058127A1 (en) * 2005-09-12 2007-03-15 Sharp Kabushiki Kaisha Multiple-view directional display

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5897184A (en) * 1996-07-02 1999-04-27 Dimension Technologies, Inc. Reduced-thickness backlighter for autostereoscopic display and display using the backlighter
US20070058127A1 (en) * 2005-09-12 2007-03-15 Sharp Kabushiki Kaisha Multiple-view directional display

Cited By (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015069210A (ja) * 2013-09-27 2015-04-13 三星電子株式会社Ｓａｍｓｕｎｇ Ｅｌｅｃｔｒｏｎｉｃｓ Ｃｏ．，Ｌｔｄ． 多視点映像を提供するディスプレイ装置及び方法
US10551546B2 (en) 2015-09-05 2020-02-04 Leia Inc. Multibeam diffraction grating-based display with head tracking
US10798371B2 (en) 2015-09-05 2020-10-06 Leia Inc. Multiview display with head tracking
US10901212B2 (en) 2016-01-16 2021-01-26 Leia Inc. Multibeam diffraction grating-based head-up display
CN108604019A (zh) * 2016-01-30 2018-09-28 镭亚股份有限公司 基于多波束元件的背光和使用该背光的显示器
US10649128B2 (en) 2016-01-30 2020-05-12 Leia Inc. Multibeam element-based backlight and display using same
US10884175B2 (en) 2016-01-30 2021-01-05 Leia Inc. Multibeam element-based backlighting having converging views
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US11231539B2 (en) 2016-01-30 2022-01-25 Leia Inc. Multibeam element-based backlighting having converging views
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US10838134B2 (en) 2016-01-30 2020-11-17 Leia Inc. Multibeam element-based backlight and display using same
US10928677B2 (en) 2016-05-23 2021-02-23 Leia Inc. Diffractive multibeam element-based backlighting
US10705281B2 (en) 2016-10-05 2020-07-07 Leia Inc. Mode-selectable backlight, method, and display employing directional scattering features
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US11314099B2 (en) 2016-10-05 2022-04-26 Leia Inc. Transparent display and method
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