Patent application number | Description | Published |
20110242847 | LAMINATED DOUBLE-SIDED LIGHT GUIDE PLATE - The present invention provides a light guide plate having an input surface for receiving light from a light source, a micro-patterned output surface for emitting light, and a micro-patterned bottom surface opposing to the output surface, made in steps comprising: extruding a first resin into the nip between a first pressure roller and a first patterned roller to form a first layer. Extruding a second resin into the nip between a second pressure roller and a second patterned roller to form a second layer. Laminating the first layer and the second layer at their unpatterned surfaces to form an optical sheet comprising a plurality of light guide plate patterns, and cutting and finishing the optical sheet into a plurality of double-sided light guide plates having the specified length and width dimensions. | 10-06-2011 |
20110242848 | PRINTED DOUBLE-SIDED LIGHT GUIDE PLATE - The present invention provides a light guide plate having an input surface for receiving light from a light source, a micro-patterned output surface for emitting light, and a micro-patterned bottom surface opposing to the output surface, made in steps comprising: extruding a resin into the nip between a pressure roller and a patterned roller to form a layer at a patterned roller surface temperature T1 and a nip pressure P1, the layer having an un-patterned surface and a patterned surface, the patterned surface having a pattern transferred from the patterned roller. Printing a discrete pattern on the un-patterned surface of the layer to form an optical sheet comprising a plurality of light guide plate patterns, and cutting and finishing the said optical sheet into a plurality of double-sided light guide plates having the specified length and width dimensions. | 10-06-2011 |
20120161344 | METHOD OF MANUFACTURING A DIFFUSELY-REFLECTING POLARIZER HAVING A NEARLY ISOTROPIC CONTINUOUS PHASE - The present invention provides a method for manufacturing a diffusely reflecting polarizer, comprising the steps of: coextruding first and second polymers through a chaotic mixer and a sheeting die to produce a cast sheet with a desired blend morphology and stretching said cast sheet to produce a composite film containing a first polymer having a birefringence of less than 0.02, with said first polymer being an amorphous material and a continuous phase, and a second polymer which forms a dispersed phase, and having an index of refraction that differs from said continuous phase by greater than about 0.05 along a first axis and by less than about 0.05 along a second axis orthogonal to said first axis, wherein said first and second polymers taken together along a first axis for one polarization state of electromagnetic radiation exhibit a diffuse reflectivity R | 06-28-2012 |
20120161345 | METHOD OF MANUFACTURING A DIFFUSELY-REFLECTING POLARIZER HAVING A SUBSTANTIALLY AMORPHOUS NANO-COMPOSITE CONTINUOUS PHASE - The present invention provides a method for manufacturing a diffusely reflecting polarizer, comprising the steps of: coextruding first and second polymers through a chaotic mixer and a sheeting die to produce a cast sheet with a desired blend morphology and stretching said cast sheet to produce a composite film containing a first polymer having a birefringence of less than 0.02, with said first polymer being a substantially amorphous nano-composite material, and a second polymer, the first polymer being a major phase, and the second polymer being a dispersed minor phase, wherein said first and second polymers taken together along a first axis for one polarization state of electromagnetic radiation exhibit a diffuse reflectivity R | 06-28-2012 |
20130148377 | LIGHT GUIDE FILMS HAVING REDUCED BANDING LEVELS - The present invention provides a light guide plate comprising an input surface for receiving light from a light source, an output surface for emitting light, and a bottom surface opposing to the output surface, wherein at least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern comprising a plurality of micro-lenses. The light guide plate further comprises micro-lens having a width w, a length l, a depth d, an orientation angle, a first base angle α | 06-13-2013 |
20130148378 | LIGHT GUIDE PLATES HAVING A TWO-DIMENSIONAL PATTERN COMPRISING SUBSTANTIALLY IDENTICAL MICRO-LENSES - The present invention provides a light guide plate comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, and a bottom surface opposing to the output surface, wherein at least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern consisting of a plurality of substantially identical micro-lenses, each micro-lens having a width, a length, and an orientation angle. The light guide plate further provides an area density D(x, y) of the micro-lenses varies in a first direction y-axis that is parallel to the length direction and in a second direction x-axis that is parallel to the width direction for y between starting line y | 06-13-2013 |
20130155693 | LIGHT GUIDE PLATE HAVING A PSEUDO TWO-DIMENSIONAL PATTERN - The present invention provides a light guide plate comprising a light guide plate comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, and a bottom surface opposing to the output surface. At least one of the output surface and the bottom surface has a micro-pattern, the micro-pattern comprising micro-lenses distributed in a first direction y-axis that is parallel to the length direction and in a second direction x-axis that is parallel to the width direction. | 06-20-2013 |
20130329452 | METHOD FOR REDUCING HOT SPOTS IN LIGHT GUIDE PLATES - The present invention provides a method of reducing hot spots in a light guide plate, the light guide plate comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, a bottom surface opposing to the output surface, and an end surface opposing to the input surface. The method further provides distributing a set of lenses in the core zone and a set of micro-lenses in the mixing zone, wherein the density of the set of micro-lenses stays constant in the X-axis, and a size and density of the micro-lenses is selected to redirect the light from the discrete light sources toward the Y-axis and provide a ratio L | 12-12-2013 |
20130329453 | LIGHT GUIDE PLATE HAVING A REVERSED MICRO-PATTERN IN ITS MIXING ZONE - The present invention provides a light guide plate having reduced hot spots comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, a bottom surface opposing to the output surface, and an end surface opposing to the input surface. | 12-12-2013 |
20130329454 | LIGHT GUIDE PLATE HAVING A ONE-DIMENSIONAL MICRO-PATTERN IN ITS MIXING ZONE - The present invention provides a light guide plate having reduced hot spots comprising an input surface for receiving light from a plurality of discrete light sources, an output surface for emitting light, a bottom surface opposing to the output surface, and an end surface opposing to the input surface. The invention further provides a set of lenses distributed in the core zone and a set of micro-lenses distributed in the mixing zone, wherein the density of the set of micro-lenses stays the same in the X-axis, and the selected size and the density of the micro-lenses redirect the light from the discrete light sources toward the Y-axis and a ratio L | 12-12-2013 |
20130329455 | METHOD FOR REDUCING HOT SPOTS IN A LIGHT GUIDE PLATE UTILIZING A REVERSED MICRO-PATTERN IN ITS MIXING ZONE - The present invention provides a method of reducing hot spots in a light guide plate. The method comprises distributing a set of lenses in the core zone and a set of micro-lenses in the mixing zone between Y=Y | 12-12-2013 |
20140327948 | DISPLAY ELEMENTS INCORPORATING ASYMMETRIC APERTURES - This, disclosure provides systems, methods and apparatus for improving the angular light distribution of a display apparatus. Smaller shutter-based display apparatus that modulate light passing through at least two apertures in an aperture or light blocking layer can provide similar viewing angle characteristics as larger shutter-based modulators by disproportionately reducing the width of a subset of the at least two apertures in relation to the remainder of the apertures. As the width of such apertures is one of the primary determinants of viewing angle, allowing a greater percentage of the light throughput of a shutter assembly to pass through wider apertures helps maintain a wider viewing angle for the display. | 11-06-2014 |
20140362092 | LIGHT EMITTING DIODE (LED) BACKLIGHT WITH REDUCED HOTSPOT FORMATION - This disclosure provides systems, methods and apparatus for reducing hotspots in backlit displays. Hotspot artifacts in multi-color backlit displays can be reduced by incorporating optical structures along the edges of light guides incorporated into the backlights. The optical structures are positioned adjacent to light emitting modules that emit light into the light guide. Light emitted from the light emitting modules passes through the optical structures before entering the light guide. Hotspot size can be reduced by appropriately configuring the shapes and sizes of these optical structures. In some implementations, the optical structures may include serrations along the side of the light guide adjacent to the light sources. In some other implementations, the optical structures may include dimples. Size of hotspots may also be reduced by reducing the distance between adjacent light sources of the same color. | 12-11-2014 |
20140375538 | DISPLAY APPARATUS INCORPORATING CONSTRAINED LIGHT ABSORBING LAYERS - This disclosure provides systems, methods and apparatus for modulating light for a display. The system includes a light blocking layer including a reflective layer and a light absorbing layer. The light blocking layer is configured such that any conductive components therein underlie or cover less than a majority of the circuitry controlling the display elements incorporated into the display. | 12-25-2014 |