| Patent application number | Description | Published |
|---|
| 20090115970 | HIGH EFFICIENCY COMPACT OLED MICRODISPLAY PROJECTION ENGINE - A compact micro-display engine having improved efficiency for, e.g., projection displays or personal displays. It includes an emissive micro-display without the need for external illumination, a collimation optic plate on top of micro-display and a low F/# projection optics after the collimation optic plate. The collimation optical plate may be a micro-structure lenses array or a collimation prism film, and is used to collimate wide divergent light from the emissive micro-display device into a small cone angle light which will be efficiently collected by the projection optics. A reflective mirror is deposited on the top of substrate and underneath the light emitting layer for recycling the reflected back light from the collimation optic plate. The compact micro-display projection engine controls the divergence angle of the emitted light, and provides the controlled light to the objective plane of a projection optics subsystem. | 05-07-2009 |
| 20090316077 | LIGHT GUIDE BLADE WITH COLOR BALANCING STRUCTURES AND BLUE ABSORPTION COMPENSATION FOR LARGE SCREEN LED BACKLIGHT UNIT - One or more embodiments of the present invention provide apparatuses, methods and systems to form a thin LED backlight unit for a large-screen flat-panel display. The backlight unit is able to achieve improved color mixing within a shorter mixing distance than the conventional art, while maintaining desired brightness uniformity, thereby allowing for a shorter bezel of a display device. One or more embodiments of the present invention include one or more light guides, which, by operating together, provide thin backlight units. High system efficiency is provided by introducing a recycling enhancement component, and uniform color distribution is achieved by incorporating color shift compensation. Multiple light guides are arranged adjacent to one another can offer a progressive scan illumination feature. | 12-24-2009 |
| 20100014027 | LED BACKLIGHT HAVING EDGE ILLUMINATOR FOR FLAT PANEL LCD DISPLAYS - One or more embodiments of the present invention provide apparatuses and systems to form edge-illuminated LED backlight units for flat-panel LCD displays. The backlight unit is able to achieve uniform color and brightness distribution with very small dimensions of depth and bezels. One or more embodiments of the present invention include a light guide coupled to a light guide plate, which, by operating together, provide simple, efficient, few LEDs and low cost backlight units. Effective coupling structures provide high system efficiency. | 01-21-2010 |
| 20100149814 | Semiconductor Lighting Device With Wavelength Conversion on Back-Transferred Light Path - A semiconductor lighting device includes a semiconductor light emitter packaged on a reflective substrate to emit a first light and a remote wavelength conversion layer on a back-transferred light path to convert the back-transferred first light into a forward second light. A filter is disposed on a light emitting forward path with a space to the semiconductor light emitter to reflect back at least a portion of the first light. A diffusive member may be positioned outside of the filter to diffuse the forward passing light before it exits from the semiconductor lighting device. As a second aspect of this invention, a solid state lighting device includes a short wavelength semiconductor emitter; a long wavelength semiconductor emitter with wavelength in reddish orange range; a filter on a light emitting forward path to reflect back a portion of short wavelength first light; and a wavelength conversion component on a back-transferred light path. The device produces a mixture of warm white light in a correlated color temperature from 2700˜3500 K and color rendering index at least 85 for any indoor lighting application. | 06-17-2010 |
| 20100295069 | High Luminous Flux Warm White Solid State Lighting Device - A high luminous flux warm white solid state lighting device with a high color rendering is disclosed. The device comprising two groups of semiconductor light emitting components to emit and excite four narrow-band spectrums of lights at high luminous efficacy, wherein the semiconductor light emitting components are directly mounted on a thermal effective dissipation member; a mixing cavity for blending the multi-spectrum of lights; a back-transferred light recycling member deposited on top of an LED driver and around the semiconductor light emitters; and a diffusive member to diffuse the mixture of output light from the solid state lighting device. The solid state lighting device produces a warm white light with luminous efficacy at least 80 lumens per watt and a color rendering index at least 85 for any lighting application. | 11-25-2010 |
