Inventor: Gang Xu

Address: Cupertino, CA
No. of patents: 30
Last patent issue date: 02/05/2013

Number	Title	Issue Date
8368981	Display device with diffractive optics Light modulator displays may be illuminated using a light guide comprising diffractive optics that directs light onto the light modulators. The light guide may comprise, for example, a holographic light turning element that turns light propagating within the light g...	02/05/2013
8358266	Light turning device with prismatic light turning features A light guide device includes a light guide body and two or more pluralities of spaced-apart slits. The slits are formed by undercuts in the light guide body. Sidewalls of the slits form facets that redirect light impinging on the facets. In some embodiments, the li...	01/22/2013
8346048	Front light devices and methods of fabrication thereof A illumination device comprises a light guide having a first end for receiving light and configured to support propagation of light along the length of the light guide. A turning microstructure is disposed on a first side of the light guide configured to turn light ...	01/01/2013
8310758	Printable static interferometric images A static interferometric image device including a plurality of solidified liquid layers is formed over a substrate by an inkjet process such that the layers are lateral to one another. In some embodiments, the substrate includes pre-defined cavities, and the liquid ...	11/13/2012
8300304	Integrated front light diffuser for reflective displays A reflective electronic display includes a front light assembly with a diffuser for enlarging the viewing cone of the display. The front light may include a substrate, a plurality of optical turning features, and a diffuser formed therebetween. The haze of the diffu...	10/30/2012
8118468	Illumination apparatus and methods Disclosed are apparatus and methods for illuminating a display. In certain embodiments, the illumination apparatus includes a light guide that receives light from a light generator along an edge of the light guide and directs the received light via light extractor f...	02/21/2012
8107155	System and method for reducing visual artifacts in displays Embodiments include systems and methods for reducing visible artifacts such as Moiré, or interference, patterns, in displays. One embodiment includes a display device comprising a plurality of light modulators and a plurality of illumination elements configured to ...	01/31/2012
8077379	Interferometric optical display system with broadband characteristics Broad band white color can be achieved in MEMS display devices by incorporating a material having an extinction coefficient (k) below a threshold value for wavelength of light within an operative optical range of the interferometric modulator. One embodiment provide...	12/13/2011
8072402	Interferometric optical modulator with broadband reflection characteristics An optical device suitable for forming a pixel in a video display. The optical device includes a first layer having a first refractive index; a second layer over the first layer, the second layer having a second refractive index less than the first refractive index;...	12/06/2011
8068710	Decoupled holographic film and diffuser In various embodiments described herein, a display device includes a front illumination device that comprises a light guide disposed forward of an array of display elements, such as an array of interferometric modulators, to distribute light across the array of disp...	11/29/2011
8061882	Illumination device with built-in light coupler The invention comprises devices and methods for coupling a light source to a display illumination device. In one embodiment, an illumination device includes a light guide comprising a front surface, a back surface, a light coupling section configured to receive opti...	11/22/2011
8058549	Photovoltaic devices with integrated color interferometric film stacks Color photovoltaic (PV) devices formed using interferometric stacks tuned to reflect color covering the front side or back side of a PV cell, device, panel, or array are disclosed. Interferometric stacks covering PV devices include interferometric modulators (IMODs)...	11/15/2011
8054527	Adjustably transmissive MEMS-based devices Modulator devices are selectably adjustable between at least two states, wherein the transmission and/or reflection of particular wavelengths of light are modified. Certain modulator devices are substantially uniformly adjustable over a wide range of wavelengths, in...	11/08/2011
8040589	Devices and methods for enhancing brightness of displays using angle conversion layers Various embodiments of the present invention relate to enhancing the brightness of displays that employ illumination systems. In some embodiments, the illumination systems include light guides, diffractive microstructure, and light-turning features. The diffractive ...	10/18/2011
8023191	Printable static interferometric images Methods of fabricating a static interferometric image device and static interferometric image device formed by the same are disclosed. In one embodiment, a method includes providing a substrate. A plurality of liquid layers are formed over the substrate by an inkjet...	09/20/2011
7969641	Device having power generating black mask and method of fabricating the same A power generating black mask comprising an anti-reflection layer deposited over a substrate, a first electrode layer deposited over the anti-reflection layer, a semi-conductor layer deposited over the first electrode layer and a second electrode layer deposited ove...	06/28/2011
7969638	Device having thin black mask and method of fabricating the same A thin black mask is created using a single mask process. A dielectric layer is deposited over a substrate. An absorber layer is deposited over the dielectric layer and a reflector layer is deposited over the absorber layer. The absorber layer and the reflector laye...	06/28/2011
7949213	Light illumination of displays with front light guide and coupling elements In various embodiments described herein, a display device includes a front illumination apparatus that comprises a first light guide disposed forward of an array of display elements, such as an array of interferometric modulators, to distribute light across the arra...	05/24/2011
7898723	Microelectromechanical systems display element with photovoltaic structure A microelectromechanical systems (MEMS) display element may include a photovoltaic structure configured to generate electric energy from incident light. In one embodiment, the display element includes a first layer that is at least partially transmissive of light, a...	03/01/2011
7855827	Internal optical isolation structure for integrated front or back lighting An optical isolation structure is incorporated into a display between the display elements and the transparent substrate for the display elements. The optical isolation structure reflects light rays within the substrate that impact the structure at high angles relat...	12/21/2010
7777954	Systems and methods of providing a light guiding layer Various embodiments of the invention include an interferometric optical modulator comprising a substrate layer and a light direction layer. Such an interferometric modulator may be integrated with a diffuser layer in a display device in a way that physically integra...	08/17/2010
7733439	Dual film light guide for illuminating displays A front light guide panel including a plurality of embedded surface features is provided. The front light panel is configured to deliver uniform illumination from an artificial light source disposed at one side of the font light panel to an array of display elements...	06/08/2010
7688494	Electrode and interconnect materials for MEMS devices A microelectromechanical (MEMS) device is presented which comprises a metallized semiconductor. The metallized semiconductor can be used for conductor applications because of its low resistivity, and for transistor applications because of its semiconductor propertie...	03/30/2010
7684107	Internal optical isolation structure for integrated front or back lighting An optical isolation structure is incorporated into a display between the display elements and the transparent substrate for the display elements. The optical isolation structure reflects light rays within the substrate that impact the structure at high angles relat...	03/23/2010
7643203	Interferometric optical display system with broadband characteristics Broad band white color can be achieved in MEMS display devices by incorporating a material having an extinction coefficient (k) below a threshold value for wavelength of light within an operative optical range of the interferometric modulator. One embodiment provide...	01/05/2010
7619822	Systems and methods of providing a light guiding layer Various embodiments of the invention include an interferometric optical modulator comprising a substrate layer and a light direction layer. Such an interferometric modulator may be integrated with a diffuser layer in a display device in a way that physically integra...	11/17/2009
7403180	Hybrid color synthesis for multistate reflective modulator displays A display device including a plurality of optical modulators and a plurality of filter elements on a reflective side of the plurality of optical modulators is provided. The plurality of optical modulators includes a first set of optical modulators and a second set o...	07/22/2008
7369292	Electrode and interconnect materials for MEMS devices A microelectromechanical (MEMS) device is presented which comprises a metallized semiconductor. The metallized semiconductor can be used for conductor applications because of its low resistivity, and for transistor applications because of its semiconductor propertie...	05/06/2008
6801213	System and method for superframe dithering in a liquid crystal display A system and method are provided for driving a digital display adapted to depict a first number of bits per color field during each frame. In use, a second number of bits is displayed which is greater than the first number of bits. This is accomplished by alternatin...	10/05/2004
6567143	NW twisted nematic LCD with negative and tilted retarders on each side of liquid crystal cell to improve vertical contrast ratios A normally white twisted nematic (TN) liquid crystal display (LCD) outputs improved viewing characteristics which are defined by high contrast ratios and/or reduced inversion. The display includes a pair of negative tilted retarders located on opposite si...	05/20/2003

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Inventor: Gang Xu