`SVV Technology Innovations, Inc.
`
`CONFIDENTIAL
`Claim Chart
`
`Patent Date
`Patent #
`US8290318 Oct 16, 2012
`
`Title
`Light trapping optical cover
`
`Priority date
`Apr 21, 2009
`
`Manufacturer: Samsung Electronics, 85 Challenger Road, Ridgefield Park, NJ 07660.
`Website: www.samsung.com/us
`
`Analyzed Product: 27‐inch Curved QLED Gaming Monitor, Model CFG73 (MFD. March 2018)
`
`Any separation of claim elements in these charts is not intended to modify the claim language itself, nor
`does it suggest that the claims should be construed in any particular manner. These charts do not
`suggest how any claim term should be construed. These charts are preliminary, and are subject to
`change. These charts are not intended to represent the entire scope of use, or all possible theories of
`use. No waiver of work product or attorney‐client privilege is intended by any disclosure in these charts.
`
`Claim 1
`An optical cover for light harvesting
`devices, comprising:
`
`Product Feature
`The CFG73 Monitor uses an optical cover, specifically, a backlight
`including various light‐management optical sheets (including, for
`example, a light guiding plate (LGP)) covering light harvesting devices
`(plastic sheets incorporating quantum dot materials) within a
`backlighting/LCD panel assembly. The quantum dot materials are used to
`absorb blue light emitted from the backlight and re‐emit the absorbed
`energy in other spectral bands of light (e.g., red and/or green colors)1.
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` Retail box of monitor
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`1 Samsung Display, Quantum Dots: Solution for a Wider Color Gamut (White Paper, retrieved Jan 17, 2019):
`https://pid.samsungdisplay.com/en/learning‐center/white‐papers/quantum‐dot‐technology
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`CONFIDENTIAL
`Claim 1
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`Product Feature
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`Front view of monitor
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`Rear view
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`SN label
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`CONFIDENTIAL
`Claim 1
`
`Product Feature
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`Back view with cover removed
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`Backlight unit under LCD panel
`The LCD/backlighting panel assembly incorporates a liquid crystal display
`(LCD), optical films, a Quantum Dot Enhancement Film (QDEF), an LGP,
`and a back reflector (a plastic sheet with diffuse, highly reflective
`coating). The LCD/backlighting panel assembly is illuminated using
`multiple light‐emitting diodes (LEDs) which provide a lighting source.
`The LEDs are placed along an edge of the visible area of the display and
`emit light in the blue spectrum.
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`CONFIDENTIAL
`Claim 1
`
`Product Feature
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`Internal structure of LCD/backlighting panel assembly
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`
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`a layer of optically transparent material
`including a broad‐area light input
`surface and an opposing broad‐area
`light output surface extending
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`Backlight in illuminated state (blue LEDs are turned on)
`The LCD/backlighting panel assembly includes a layer of optically
`transparent material (LGP). The LGP is formed by a plastic sheet made
`from a highly transparent material (such as optical‐grade acrylic). The
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`CONFIDENTIAL
`Claim 1
`generally parallel to said light input
`surface and configured for a
`substantially unimpeded transversal
`light passage;
`
`Product Feature
`LGP includes two opposing broad‐area surfaces extending parallel to
`each other.
`In operation, the LGP receives light from LEDs on one of its edges and
`outputs that light from the broadarea surfaces. Accordingly, both of the
`surfaces are light output surfaces. Furthermore, a significant portion of
`the light leaving the LGP is further trapped (confined) within the
`backlighting/LCD panel assembly such that the light travels back and
`forth through the layer of optically transparent material (LGP) and the
`light harvesting device (e.g., the QDEF). In the process, the light is
`received on and output from both broad‐area surfaces of the LGP. Thus,
`both of the broad‐area surfaces are also light input surfaces. The LGP
`transmits light incident onto its broad‐area surfaces in either direction
`and without appreciable attenuation. Thus, the LGP is configured for a
`substantially unimpeded transversal light passage.
`
`
`said layer further including a plurality
`of light deflecting elements distributed
`along the prevailing plane of said layer
`and having a cumulative aperture
`substantially smaller than the area of
`each of said surfaces;
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`
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`Close-up view of the LGP
`The LGP (layer of optically transparent material) contains a large number
`of light deflecting elements (microstructures) that, as shown below, can
`be seen under a microscope. These light deflecting elements are formed
`in the back surface2 of the LGP and distributed along the prevailing plane
`of the LGP (the LGP is planar and defines a plane in space). The individual
`light deflecting elements (microstructures) are relatively small and also
`spaced apart from each other such that their cumulative aperture (a
`space through which light passes when entering the microstructures) is
`substantially smaller than the area of each of the broad‐area surfaces
`(front and back surfaces) defining the LGP.
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`2 The terms “front” and “back” are used to describe various elements within the analyzed device assembly when
`the device assembly is oriented with its viewable side facing the viewer.
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`CONFIDENTIAL
`Claim 1
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`Product Feature
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`said light input surface being
`characterized by a stepped drop in
`refractive index outwardly from said
`layer and by a critical angle of a Total
`Internal Reflection;
`wherein each of said light deflecting
`elements is configured to receive light
`propagating between said light input
`surface and said light output surface
`and communicate said light a greater
`propagation angle with respect to a
`normal to said light input surface, said
`propagation angle being greater than
`said critical angle of a Total Internal
`Reflection.
`
`
`Light deflecting elements (microstructures) formed in the back surface of the LGP
`(layer of optically transparent material)
`Both the front and back surfaces of the LGP receive light and therefore
`are input surfaces. Furthermore, both of the surfaces are characterized
`by a stepped drop in refractive index outwardly from the respective layer
`(LGP) and by a critical angle of a Total Internal Reflection (the LGP guides
`light emitted by the LEDs using Total Intenal Reflection).
`Each of the light deflecting elements (microstructures) receive light that
`propagate between the opposing front and back surfaces (e.g., the light
`that is recycled within the LCD/backlighting panel assembly and passed
`through the LGP. At least some of that light is redirected at greater
`propagation angles (compared to the incidence direction) with respect to
`a normal to the light input surface (e.g., the front surface) by reflecting
`and refracting from the walls of the light deflecting elements
`(microstructures), such that the propagation angles of the redirected
`light become greater than the critical angle of a Total Internal Reflection
`characterizing the LGP.
`
`
`Magnified three-dimensional image of a portion of the back surface of the LGP
`(obtained using an imaging 3D microscope), showing a representative individual
`light deflecting element (microstructure) having steep walls that redirect light.
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`CONFIDENTIAL
`Claim 2
`An optical cover as recited in claim 1,
`wherein said light deflecting elements
`comprise surface relief features.
`
`Product Feature
`The light deflecting elements (microstructures) incorporate surface
`relief features.
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`
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`Claim 3
`An optical cover as recited in claim 1,
`wherein said light deflecting elements
`comprise microscopic surface cavities.
`
`Three-dimensional image (obtained using an imaging 3D microscope) of
`representative surface relief feature.
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`
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`Product Feature
`The light deflecting elements (microstructures) include microscopic
`surface cavities. For example, each microstructure includes an
`elongated cavity which is about 300 micrometers long and 100
`micrometers wide.
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`Magnified three-dimensional image of a portion of the back surface of the LGP
`(obtained using an imaging 3D microscope), showing a representative cavity.
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`Measurement of individual cavity
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`Claim 4
`An optical cover as recited in claim 1,
`wherein said light deflecting elements
`comprise surface microscopic cavities and
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`Product Feature
`As can be seen from a cross‐sectional profile of representative cavity
`below, the light deflecting elements include surface microscopic
`cavities which have a V‐shape in a cross‐section.
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`CONFIDENTIAL
`Claim 4
`said cavities have a V‐shape in a cross‐
`section.
`
`Product Feature
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`
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`Claim 5
`An optical cover as recited in claim 1,
`wherein said light deflecting elements
`comprise surface relief features selected
`from the group of elements consisting of
`prismatic grooves, blind holes, through
`holes, undercuts, notches, surface
`discontinuities, discontinuities in said
`layer, surface texture, and surface
`corrugations.
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`Product Feature
`The light deflecting elements include surface relief features selected
`from the group of elements consisting of prismatic grooves, blind
`holes, through holes, undercuts, notches, surface discontinuities,
`discontinuities in said layer, surface texture, and surface corrugations.
`For example, as shown below, a representative light deflecting
`element (microstructure) incorporates a surface relief feature which
`can be regarded at least as a blind hole, notch, or surface
`discontinuity.
`
`
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`Claim 6
`An optical cover as recited in claim 1,
`wherein each of said light deflecting
`elements comprises a surface inclined at
`an angle with respect to said input surface
`and configures to deflect light by means
`of refraction or a total internal reflection.
`
`Three-dimensional image (obtained using an imaging 3D microscope) of
`representative surface relief feature.
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`
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`Product Feature
`Each of the light deflecting elements (microstructures) includes a
`surface that is inclined at an angle with respect to the input surface
`(e.g., the front surface) and is configured to deflect light by means of
`refraction or a total internal reflection.
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`CONFIDENTIAL
`Claim 6
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`Product Feature
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`2d/3D views and cross-sectional profile of representative light deflecting
`element (microstructure), obtained using an imaging 3D microscope.
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`
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`Product Feature
`No evidence of use is currently proffered for this claim.
`
`Product Feature
`Each of the light deflecting elements (microstructures) includes a
`surface that is inclined at an angle with respect to the input surface
`(e.g., the front surface), is configured to deflect light by means of
`refraction or a total internal reflection, and has a curved shape (see
`below).
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`
`
`Claim 7
`An optical cover as recited in claim 1,
`wherein each of said light deflecting
`elements comprises a surface inclined at
`an angle with respect to said input surface
`and configures to deflect light by means
`of refraction or a total internal reflection
`and wherein said surface has a planar
`shape.
`
`
`Claim 8
`An optical cover as recited in claim 1,
`wherein each of said light deflecting
`elements comprises a surface inclined at
`an angle with respect to said input surface
`and configures to deflect light by means
`of refraction or a total internal reflection
`and wherein said surface has a curved
`shape.
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`CONFIDENTIAL
`Claim 8
`
`Product Feature
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`2d/3D views and cross-sectional profile of representative light deflecting
`element (microstructure), obtained using an imaging 3D microscope.
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`
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`Product Feature
`No evidence of use is currently proffered for this claim.
`
`Product Feature
`No evidence of use is currently proffered for this claim.
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`
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`Claim 9
`An optical cover as recited in claim 1,
`further comprising a plurality of light
`collectors distributed along the prevailing
`plane of said layer according to the same
`pattern as said plurality of light deflecting
`elements, wherein said light collectors
`and said light deflecting elements form
`individual opticules pairwise, each said
`individual opticule having said light
`deflecting element disposed on the optical
`axis of the respective said light collector
`and in the immediate proximity to the
`focal area of said light collector.
`
`
`Claim 10
`An optical cover as recited in claim 1,
`further comprising a lens array, wherein
`said lens array comprises a plurality of
`surface relief features disposed in the
`focal plane of said lens array.
`
`
`Claim 11
`An optical cover as recited in claim
`1, further comprising a lens array
`wherein each lens in said array has a
`shape in a longitudinal section
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`
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`Product Feature
`The LGP includes a lens array formed in its front surface (multiple lenses
`formed in a one‐dimensional array on the supporting substrate provided by
`the LGP). Each lens in the lens array has an elongated cylindrical shape.
`Accordingly, each lens in the lens array has an elongated shape in a
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`CONFIDENTIAL
`Claim 11
`selected from the group of elements
`consisting of elongated, cylindrical,
`square, rectangular and hexagonal.
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`Product Feature
`longitudinal section. Furthermore, each lens in the lens array has a
`rectangular shape in a longitudinal section.
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`Close-up view of the LGP revealing a lens array formed in front surface of LGP
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`Front view of the lens array formed in the front surface of the LGP.
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`CONFIDENTIAL
`Claim 11
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`Product Feature
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`
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`Claim 12
`An optical cover as recited in claim 1,
`further comprising one or more optical
`cladding layers.
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`Claim 13
`An optical cover as recited in claim 1,
`further comprising one or more light
`harvesting device disposed along
`said light output surface.
`
`A magnified three-dimensional image and cross-sectional profile of representative
`cylindrical lens (obtained using an imaging 3D microscope).
`
`Product Feature
`No evidence of use is currently proffered for this claim.
`
`Product Feature
`The LCD/backlighting panel assembly incorporates a Quantum Dot
`Enhancement Film (QDEF) disposed along the front surface of the LGP. The
`front surface is a light output surface as a portion of light is output from
`the LGP through this surface.
`The QDEF incorporates quantum dot materials. The quantum dots absorb
`blue light emitted by the LEDs and redistributed by the LGP and re‐emit the
`absorbed energy in other spectral bands of light (such as red and/or green
`colors). Accordingly, the QDEF is a light harvesting device disposed along
`the light output surface (front surface).
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`CONFIDENTIAL
`Claim 13
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`Product Feature
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`Internal structure of LCD/backlighting panel assembly showing
`the location of QDEF and back reflector.
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`QDEF in illuminated state (LEDs are turned on).
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`CONFIDENTIAL
`Claim 13
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`Product Feature
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`Cross-section of QDEF.
`In addition, the LCD/backlighting panel assembly incorporates a back
`reflector which includes a pattern of phosphor materials. Accordingly, the
`back reflector represents a second light harvesting device disposed along
`the light output surface.
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`
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`Close-up view of back reflector revealing a pattern of light
`converting phosphor material (second light harvesting device)
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`
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`Claim 14
`An optical cover as recited in claim 1,
`further comprising a light harvesting
`device, wherein said light harvesting
`device is selected from the group of
`elements consisting of one or more
`
`
`
`Product Feature
`The LCD/backlighting panel assembly incorporates a light harvesting device
`selected from the group of elements consisting of one or more
`photovoltaic cells, radiation detectors, light absorbers, photo‐chemical
`reactors and photo‐bioreactors.
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`CONFIDENTIAL
`Claim 14
`photovoltaic cells, radiation
`detectors, light absorbers, photo‐
`chemical reactors and photo‐
`bioreactors.
`
`Product Feature
`For example, both the QDEF and the phosphor material on the back
`reflector are light harvesting devices (as explained above). QDEF includes
`quantum dots which are light absorbers (the quantum dots absorb blue
`light emitted by the LEDs and convert it to other colors). Similarly, the
`phosphor material is a light absorber (the phosphors absorb blue light
`emitted by the LEDs and convert it to other colors).
`
`Internal structure of LCD/backlighting panel assembly showing
`the location of QDEF and back reflector.
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`
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`QDEF in illuminated state (LEDs are turned on).
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`CONFIDENTIAL
`Claim 14
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`Product Feature
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`Cross-section of QDEF.
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`Close-up view of back reflector revealing a pattern of light converting phosphor
`material (second light harvesting device)
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`Claim 15
`An optical cover as recited in claim 1
`having a form of a flexible sheet or film.
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`Product Feature
`The optical cover has a form of a flexible sheet or film. For example, it
`flexes with a relative ease without breaking and is also retained in a
`bent configuration (the monitor has a curved shape).
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`CONFIDENTIAL
`Claim 15
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`Product Feature
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`Internal structure of LCD/backlighting panel assembly revealing flexible sheet
`forms.
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`Top view of LCD/backlighting panel assembly revealing its curved shape.
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