Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
  • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
  • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F13/00—Illuminated signs; Luminous advertising
  • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
  • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F19/00—Advertising or display means not otherwise provided for
  • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
  • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
  • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
  • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals

Definitions

• the present invention relates to devices that alternatively display multiple images especially for point-of-
• the principle on which the electronic displays are based is the ability of the
• the pixel can be made to have a virtually
• pre-created computer program a pre-recorded video tape, or hve from a
• video camera is provided to control the intensity of each sub-pixel in the
• the most common electronic display is based on the use of a cathode ray
• CRT tube
• a color TV employs
• each sub-pixel is controlled by varying the energy of the electrons in the
• the phosphors are relatively cheap but very bulky and limited in size.
• the light emitted by the phosphors is not extremely bright, with the result that it is
• each cell is coated with either a red, green, or blue phosphor.
• the cells contain a gas that is excited by an electric current to form a plasma.
• a current of variable intensity can be made to flow through it varying the
• Liquid crystal Another type of electronic display uses liquid crystals.
• LCDs LCDs are limited in size by manufacturing difficulties.
• the sub-pixels are red, green, and blue light emitting diodes
• LEDs are arranged in pixel modules containing from three to
• the modules are arranged in a rectangular array resulting in screens ranging in size from approximately 3m x 2m to
• Each sub-pixel is individually addressed and, by varying the
• Lenticular display systems comprise two main elements: a sheet or panel,
• lenticular displays are capable of showing only a limited number of images
• lenticular displays are relatively inexpensive when
• part of the original information is deleted.
• a third type of display system based on parallax barrier methods, is
• the grid consists of
• the multiple images are viewed either by causing relative
• Another type of multi- image display is a purely mechanical one constructed
• An image to be displayed is attached in strips to one face of
• each of the prisms a second image to a second face, etc. such that when the
• the present invention is a multi-image display system that is essentially
• the interlaced images are produced by any of the methods known in the art.
• images are printed in the form of a two-dimensional matrix of pixels.
• the electronic grating for use with the indicia carrier on which the printing
• the strips comprise a number of superimposed layers and are the equivalent of the bars on a physical
• Each of the strips of the grating has a width substantially equal to
• a layered structure comprising a pair of transparent electrodes separated by a layer or layers of active material.
• control circuit that is capable, on command, of
• the active material in each strip has the
• Preferred embodiments of the invention utilize active material suitable for
• electrochromism thermochromism
• electroluminescence electroluminescence
• liquid crystals and suspended particles.
• the multi-image display of the invention operates in the following manner:
• electrodes is connected in parallel to form a set of strips that will be
• the display can be illuminated by means of reflected ambient or artificial
• the display case built into the display case and in one embodiment by the electroluminescent active material in the strips of the grating.
• the electrodes are dispersed on the surfaces of the substrate in a
• FIG. 1 to 4 schematically illustrate a method of creating an interlaced image
• Fig. 5 shows the interlaced image created according to the method
• Fig. 6 shows a grating for use in creating a multi-image display
• Figs. 7 and 8 show the two images comprising the interlaced image of
• FIG. 5 displayed separately with the aid of the grating of Fig. 6;
• FIG. 9 and 10 illustrate schematically a preferred embodiment of the
• Fig. 11A shows schematically a display unit according to the invention
• Fig. 11B is a cross-sectional view showing the internal parts of the
• Fig. 11C is an enlarged view of an area of Fig. 11B showing details of
• Fig. 12A schematically illustrates a pixel according to another method
• Fig. 12B schematically illustrates a preferred embodiment of the
• Figs. 1 to 8 For the sake of simplicity, the basic idea of the invention is demonstrated in Figs. 1 to 8 for a display system having two separate images.
• multi-image means two or more images.
• n 20 and the strips of images 1 and 2 are labeled
• Fig. 5 illustrates the interlacing procedure. Strips A1-A20 and B1-B20 are
• Image 3 has the same size as each of the original images, i.e.
• Fig. 6 shows a grating 4 having a size that is the same or larger than that of
• Grating 4 is composed of alternating opaque bars 5 and transparent windows 6. All of the bars and windows have equal widths, substantially equal to w/2. Placing grating 4 on top of the interlaced image 3 and aligning them such
• the human eye will make up for the missing strips, thus
• the number of strips required depends on the distance from which the image is to be viewed.
• Viewing of the individual images is accomplished by supplying an electronic grating comprised of a substrate on which are created an array of identical parallel strips. Each of these strips is
• control circuit that is capable, on command, of creating a
• the active material has
• a front view of an electronic grating 7 according to the invention is
• Grating 7 is comprised of a multitude of
• FIG. 9 shows a grating designed to be used with an interlaced image
• the strips are printed or deposited on the surface of a transparent
• a representative strip 8 can be made up of, for example, three layers: a
• One of the electrodes on all of the strips is electrically connected to a
• the other electrode is connected to one of two contacts 9
• Fig. 10 is schematically shown the case in which contacts 10 and 11 are
• Fig. HA shows a display device 20 according to the present invention.
• display comprises a hollow box 21 on whose front face is disposed the indicia
• a door or opening allowing access to the interior of the box. This arrangement allows for easy
• dispersed lights to be used for back-lighting of the images, and their electric lighting circuit, symbolically indicated by plug 23, as well as the electronic
• control system for the grating The control circuit for the electronic grating
• Fig. 1 IB is a cross-sectional view showing the interior of the display of Fig.
• Fig. 11C is an enlarged view of area C in Fig. 11B.
• Numeral 22 represents
• the front cover of the display which is made ' of a sheet of transparent
• the cover is optional but
• the first layer is a transparent substrate 31
• the two electrodes composed of a suitable material such as glass or plastic.
• 32 and 34 are made of a transparent electrically conducting material, such as
• Layer 33 is the layer (or in some cases
• the active material can be any material which has the
• a stimulus e.g. electric field or locahzed heating, or that its luminescence can be activated by applying a stimulus, whereby to cause
• thermochromism thermochromism
• electrodes is a phosphor that "glows" when an electric field is created in the
• the indicia carrier is placed between the electrodes.
• control circuit the electroluminescent material in the strips that are
• stimulated begin to emit light. Since the stimulated strips are positioned
• interlaced image are not illuminated and therefore are not visible.
• one of the electrodes which is at a constant potential for all of the
• the layer containing the active material is
• the electronic grating can be located in front of the
• the electronic grating of the invention is preferably created by using
• a reflecting surface 24 positioned behind the lights 23 in order to increase the intensity of the backlighting.
• reflection from the grating back into the box indicates the reflection from the back surface of layer 33 in those areas where the active material is in its opaque state
• the interlaced image is
• each pixel is comprised of a number of subpixels corresponding
• Fig. 12A is shown a typical pixel for an interlaced image comprised of four distinct images.
• unit cells of the grating is comprised of four separate subcells corresponding
• Fig. 12B shows a portion of one
• Fig. 12B Also schematically shown in Fig. 12B are the electrical

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Theoretical Computer Science (AREA)
• Business, Economics & Management (AREA)
• Accounting & Taxation (AREA)
• Marketing (AREA)
• Chemical & Material Sciences (AREA)
• Crystallography & Structural Chemistry (AREA)
• Control Of Indicators Other Than Cathode Ray Tubes (AREA)
• Television Systems (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=30011891

Family Applications (1)

Country Status (4)

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Family Cites Families (5)

• 2002
  • 2002-11-07 IL IL15271302A patent/IL152713A0/xx unknown
• 2003
  • 2003-10-30 EP EP03810568A patent/EP1561201A2/de not_active Withdrawn
  • 2003-10-30 AU AU2003276654A patent/AU2003276654A1/en not_active Abandoned
  • 2003-10-30 WO PCT/IL2003/000896 patent/WO2004042684A2/en not_active Ceased

Non-Patent Citations (1)

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