Abstract: A method of making a glass article, for example a glass light guide plate comprising at least one structured surface including a plurality of channels and peaks. The glass article may be suitable for enabling one dimensional dimming when used in a backlight unit for use as an illuminator for liquid crystal display devices.

Abstract: This disclosure provides systems, methods, and apparatus for improving angular distribution of light and total light throughput in a display device. A display device can include first and second substrates and an array of display elements positioned between the first and second substrates. A first light blocking layer can be positioned on the first substrate and can define a first plurality of apertures. A second light blocking layer can be positioned on the second substrate and can define a first second of apertures. A plurality of reflective sidewalls can be positioned adjacent to at least one edge of a respective aperture of the first plurality of apertures. The reflective sidewalls can help to improve angular distribution of light and total light throughput of the display device.

Abstract: This disclosure provides systems, methods and apparatus for providing stacks of optical films that may be used to provide increased on-axis display brightness. In one aspect, an apparatus or system may be provided that includes a light source, a first optical film having triangular cross-section, prismatic light-turning structures, and a second optical film having trapezoidal cross-section, prismatic light-turning structures. The first optical film may be interposed between the light source and the second optical film. In further aspects, a third optical film, similar to the first optical film, may be interposed between the light source and the first optical film. In yet further aspects, one or more additional optical films, similar to the second optical film, may be positioned in the stack such that the second optical film is between the first optical film and the additional optical film(s).

Abstract: This disclosure provides devices, apparatuses and methods of providing an optical filter with quantum dot films for converting a first wavelength of light to a second wavelength of light. The optical filter includes a plurality of high refractive index layers and a plurality of low refractive index layers alternatingly disposed between the high refractive index layers. Quantum dots are dispersed in either the high refractive index layers or the low refractive index layers. In some implementations, the quantum dots are capable of absorbing blue light and emitting green light. Thus, the optical filter can be part of a red-green-blue lighting device that includes a first blue LED optically coupled with the optical filter to produce green light, a red LED and a second blue LED.

Abstract: In one innovative aspect of the disclosure, a method includes patterning a first region and a first portion of a second region of a substrate using a first reticle. The method also includes patterning the second region and a first portion of the first region using a second reticle. The method additionally includes forming a first array of first patterned elements based on the patterning by the first reticle, and forming a second array of second patterned elements based on the patterning by the second reticle. In some implementations, each of the first and the second arrays are incomplete in each of the first portions. However, the first patterned elements in the first portion of the second region are complementary to the second patterned elements in the first portion of the second region. Similarly, the first patterned elements in the first portion of the first region are complementary to the second patterned elements in the first portion of the first region.

Abstract: Systems, methods and methods of manufacture for, among other things, a MEMS display that has a substrate with a first and a second array of apertures. The first and second arrays are, typically, formed on the substrate so that the arrays are adjacent and define a field boundary line that may extend between the two arrays and along a width of the substrate. In at least one array, the apertures that are proximate the field boundary line are placed at locations on the substrate to reduce differences in luminance between one portion of the display and another portion of the display.

Abstract: This disclosure provides systems, methods and apparatus for a MEMS display apparatus incorporating a tiered backplane slot structure. The backplane can include two or more light-blocking layers defining optical windows and positioned at different heights. Light can pass through the optical windows of the display apparatus at an angle. In some implementations, the angle can be based on the index of refraction of a transparent material inside the display apparatus. The transmission of off-axis and on-axis light can be improved by varying the widths of the optical windows in each layer of the backplane. In some implementations, the difference in the widths of optical windows of adjacent layers can be substantially equal to the separation distance between the layers.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 ?1, a second base angle ?2, a first entry angle ?1, and a second entry angle ?2 such that when depth change ?d is 0.1 ?m, area change ratio, defined as ( l + ? ? ? l ) · ( w + ? ? ? w ) - l · w l · w , is less than or equal to 0.95% and the beginning number density of the micro-lenses is greater than or equal to 8 per mm2, ?w being width change and ?l being length change corresponding to depth change ?d.

Abstract: 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.

Abstract: 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 L1/L0 that is between 0.9 and 1.1 for any Y?Y1.

Abstract: 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.

Abstract: 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 L1/L0 is between 0.9 and 1.1 for any Y?Y1.

Abstract: 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=Y0 and Y=Y1, wherein the density of the set of micro-lenses varies in the X-axis, having a maximum value at a first location that has a same X value as the center of one of the discrete light sources, and having a minimum value at a second location that has a same X value as the center of two adjacent discrete light sources, 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 L1/L0 that is between 0.9 and 1.1 for any Y?Y1.

Abstract: 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.

Abstract: 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 y0 and ending line, the area density D(x, y=y0) at the starting line y0 varying between a minimal value Dmin and a maximum value Dmax such that Dmin?1% and 100?Dmax/Dmin?2, and wherein the area density D(x,y) repeats in pitch P in the x-axis such that D(x,y)=D(x+P,y).

Abstract: 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.

Abstract: 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 y0 and ending line, the area density D(x, y=y0) at the starting line y0 varying between a minimal value Dmin and a maximum value Dmax such that Dmin?1% and 100?Dmax/Dmin?2, and wherein the area density D(x,y) repeats in pitch P in the x-axis such that D(x,y)=D(x+P,y).