Patents by Inventor Ion Bita
Ion Bita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140002345Abstract: This disclosure provides systems and methods for illumination systems with one or more reflective structures over a light guide. In one aspect, each reflective structure can have an absorber structure with a width greater than a width of the reflective structure. The absorber structure can have overhanging portions that are in parallel with and laterally protrude past one or more edges of the reflective structure, or the absorber structure can have enclosing portions that substantially enclose the reflective structure. The reflective structures can include light-turning features, such as facets, and/or conductive wires, such as touch sensor wires.Type: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Jyotindra Raj Shakya, Russel Allyn Martin, Ion Bita, Donald John Elloway, Rashmi Raghavendra Rao
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Publication number: 20130328943Abstract: Systems, methods, and apparatuses for improving brightness, contrast, and/or viewable angle of a reflective display. A display includes a diffuser including particles and a binder over a substrate. At least some of the particles protrude from a planar or substantially planar upper surface of the binder, which provides a topographical pattern for the diffuser. The display includes a planarization layer on the diffuser. The planarization layer provides a planar or substantially planar surface for the formation of display elements over the planarization layer.Type: ApplicationFiled: June 12, 2012Publication date: December 12, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, Evgeni Yuriy Poliakov, Sapna Patel
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Publication number: 20130328838Abstract: This disclosure provides systems, methods and apparatus for improving brightness, contrast, and viewable angle of a reflective display. In one aspect, a display includes a diffuser including a topographical pattern that is different in different areas of the display and a planarization layer over the diffuser. The diffuser is configured to scatter incident light to a different range of angles for different areas of the display.Type: ApplicationFiled: June 12, 2012Publication date: December 12, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, Evgeni Yuriy Poliakov, Sapna Patel
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Publication number: 20130321433Abstract: This disclosure provides systems, methods, and apparatus related to a the design of arrays of electrodes in a device which includes a light-guiding layer in optical contact with the electrodes. In one aspect, a device includes an array of electrodes, the electrodes include at least one edge having a non-linear shape. Specific design constraints may be placed on the shape of the non-linear edge of the electrodes.Type: ApplicationFiled: September 6, 2012Publication date: December 5, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, Russel A. Martin, Marek Mienko, Jyotindra R. Shakya
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Publication number: 20130194653Abstract: This disclosure provides systems, methods and apparatus related to an electromechanical display device. In one aspect, an analog interferometric modulator (AIMOD) includes a reflective display pixel having a movable reflective layer and a stationary absorber layer, the reflective layer and absorber layer defining a cavity therebetween. A color notch filter may be employed to produce an improved white state. In some implementations, the color notch filter is positioned on a side of the substrate opposite the absorber layer. In some other implementations, the color notch filter is positioned between the substrate and the movable reflective layer.Type: ApplicationFiled: January 26, 2012Publication date: August 1, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Jian J. Ma, Tallis Y. Chang, John H. Hong, Ion Bita
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Publication number: 20130176317Abstract: This disclosure provides systems, methods and apparatus related to an illumination system for a display device. In one aspect, the illumination system includes a light guide having a view region, which directly overlies display elements of a display, and a ledge region between the view region and a light source that injects light into the light guide. The ledge region is coated with an at least partially non-transmissive layer. The layer can be at least partially absorptive and/or at least partially reflective. In some implementations, the layer can include microstructures configured to turn steep-angle light such that it is redirected across the light guide at a shallower angle. In some implementations, the boundary between the ledge region and the view region of the light guide can have a nonlinear shape.Type: ApplicationFiled: January 6, 2012Publication date: July 11, 2013Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Kebin Li, Ion Bita
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Publication number: 20130135318Abstract: This disclosure provides systems, methods and apparatus for display assemblies. In one aspect, a display assembly may include a first panel, a second panel, and a third panel. The second panel may be spaced apart from the first panel, and the third panel may be spaced apart from the second panel. A first perimeter frame may join the first panel and the second panel, with the first perimeter frame defining a first cavity in between the first panel and the second panel. The first cavity may be substantially filled with a first liquid. A second perimeter frame may join the second panel and the third panel, with the second perimeter frame defining a second cavity in between the second panel and the third panel. The second cavity may be substantially filled with a second liquid.Type: ApplicationFiled: November 29, 2011Publication date: May 30, 2013Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Kollengode Subramanian NARAYANAN, Ion BITA, Suryaprakash GANTI, Brian William ARBUCKLE
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Publication number: 20130127922Abstract: This disclosure provides systems, methods and apparatus for improving brightness, contrast, and viewable angle of a reflective display. In one aspect, a display includes a structure having a steering layer including steering features. The steering features are configured to direct light away from inactive regions of a display and towards active regions of the display. The structure may also include a diffuser for scattering light incident on the display and reflected by the display.Type: ApplicationFiled: November 18, 2011Publication date: May 23, 2013Applicant: QUALCOMM MEMS Technologies, IncInventors: Evgeni Poliakov, Ion Bita, Kollengode S. Narayanan
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Publication number: 20130106918Abstract: This disclosure provides systems, methods, and apparatus for providing illumination using a light-turning stack having diffractive light-turning features to eject light out of the light-turning stack. In one aspect, light ejected from the light-turning stack may be applied to illuminate a display. The light-turning stack includes a light-guiding layer having a surface on which the diffractive light-turning features are disposed. A planarization layer having a refractive index different than a refractive index of the light-guiding layer directly contacts the diffractive light-turning features and has a planar surface opposite the light-turning features. The light-guiding layer can also have a planar surface opposite the light-turning features. Both these planar surfaces, on opposite sides of the light turning stack, facilitate the integration of the light-guiding layer with other layers of material, including functional layers.Type: ApplicationFiled: November 2, 2011Publication date: May 2, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, Gang Xu, Marek Mienko, Russell Wayne Gruhlke
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Publication number: 20130049844Abstract: This disclosure provides systems, methods, and apparatus related to a capacitive touch sensor with light shielding structures. In one aspect, a device includes an array formed by a plurality of row electrodes and a plurality of non-transparent column electrodes, wherein at least a first portion of the row electrodes is non-transparent and coplanar with the column electrodes and at least a second portion of the row electrodes is non-coplanar with the column electrodes. The device further includes light shielding structures that are non-transparent and coplanar with the column electrodes, wherein the light shielding structures substantially overlap the second portion.Type: ApplicationFiled: August 23, 2011Publication date: February 28, 2013Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, Leonard Eugene Fennell, William J. Cummings
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Patent number: 8379392Abstract: Systems and methods for manufacturing and packaging electronic devices with light absorptive thin film stacks are provided. In one embodiment, a light is applied to a light absorptive thin film stack disposed between a substrate and a backplate to seal the substrate to the backplate. In another embodiment, the light absorptive thin film stack includes a plurality of thin film layers. In yet another embodiment, the light absorptive thin film stack includes a spacer layer over a reflective layer and an absorber layer over the spacer layer. In still another embodiment, the light absorptive thin film stack is less than 200 nanometers thick. In yet a further embodiment, a light absorptive thin film stack is used to seal a substrate having glass, plastic, metal, or silicon to a backplate having glass, plastic, metal, or silicon. Thus, the light absorptive thin film stack is used to seal similar or dissimilar materials through a bonding process.Type: GrantFiled: October 23, 2009Date of Patent: February 19, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, John H. Hong, Khurshid S. Alam
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Patent number: 8373821Abstract: 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 located behind the front light guide while allowing for the option of illumination from ambient lighting transmitted through the light guide panel. The surface embedded surface relief features create air pockets within the light guide panel. Light incident on the side surface of the light guide propagates though the light guide until it strikes an air/light material guide interface at one on the air pockets. The light is then turned by total internal reflection through a large angle such that it exits an output face disposed in front of the array of display elements.Type: GrantFiled: June 7, 2010Date of Patent: February 12, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Jeffrey B. Sampsell, Russell W. Gruhlke, Mark Mienko, Gang Xu, Ion Bita
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Patent number: 8368981Abstract: 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 guide onto the array of light modulators. In some embodiments, the holographic element has multiple holographic functions. For example, the holographic element may additionally collimate ambient light or diffuse light reflected form the light modulators.Type: GrantFiled: April 6, 2009Date of Patent: February 5, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Russell Wayne Gruhlke, Ion Bita, Marek Mienko, Gang Xu
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Patent number: 8358266Abstract: 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 light guide body is attached to a light source. The light source emits light that is injected into the light guide body and the slits redirect the light out of the light guide body and towards a desired target. In some embodiments, the target is a display and a first plurality of slits directs light from the light source across the light guide body and over the face of the display. A second plurality of slits then directs light out of the light guide body and towards the display.Type: GrantFiled: September 1, 2009Date of Patent: January 22, 2013Assignee: Qualcomm Mems Technologies, Inc.Inventors: Kasra Khazeni, Manish Kothari, Gang Xu, Ion Bita, Kollengode S. Narayanan
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Patent number: 8346048Abstract: 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 incident on the first side and to direct the light out a second opposite side of the light guide, wherein the turning microstructure comprises a plurality of indentations. A cover is physically coupled to the light guide and disposed over the turning microstructure. An interlayer is between the cover and the light guide, wherein the interlayer physically couples the cover to the light guide. A plurality of open regions is between the interlayer and the plurality of indentations. Various embodiments include methods of coupling the cover to the light guide while preserving open regions between the cover and plurality of indentations.Type: GrantFiled: May 28, 2009Date of Patent: January 1, 2013Assignee: Qualcomm Mems Technologies, Inc.Inventors: Ion Bita, Gang Xu, Kollengode S. Narayanan, Russell W. Gruhlke, Marek Mienko, Lai Wang
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Patent number: 8323516Abstract: The efficiency of an etching process may be increased in various ways, and the cost of an etching process may be decreased. Unused etchant may be isolated and recirculated during the etching process. Etching byproducts may be collected and removed from the etching system during the etching process. Components of the etchant may be isolated and used to general additional etchant. Either or both of the etchant or the layers being etched may also be optimized for a particular etching process.Type: GrantFiled: September 12, 2008Date of Patent: December 4, 2012Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Ion Bita, Evgeni Gousev, Ana Londergan, Xiaoming Yan
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Patent number: 8310758Abstract: 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 layers are formed in the cavities. In other embodiments, the substrate includes a substantially planar, stepped, or continuously transitioning surface, and the solidified liquid layers are formed on the surface. Optical fillers or spacers are provided for defining interferometric gaps between absorbers and reflectors in the display device, based at least partially on an image that the display device is designed to display.Type: GrantFiled: August 11, 2011Date of Patent: November 13, 2012Assignee: Qualcomm Mems Technologies, Inc.Inventors: Mark W. Miles, Brian W. Arbuckle, Ion Bita, Manish Kothari, Patrick F. Brinkley, Gang Xu, Nassim Khonsari, Jonathan C. Griffiths
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Publication number: 20120274602Abstract: This disclosure provides systems, methods and apparatus for a projected capacitive touch (PCT) sensor that may include thin sensor electrodes coated with additional layers to form an optical cavity that reinforces a wavelength range or color of incident light. The sensor electrodes and a cover glass border and/or decorations may be fabricated simultaneously. In some implementations, the thickness of the optical cavity will be selected such that the “color” of reflected light is black. The sensor electrodes may not be noticeable to a human observer. However, in some other implementations, the thickness of the optical cavity may be selected such that the sensor electrodes and/or the decorative portions will have another color. Routing wires of the touch sensor may be shielded by a grounded conductive layer in the border.Type: ApplicationFiled: November 4, 2011Publication date: November 1, 2012Applicant: QUALCOMM MEMS TECHNOLOGIES, INC.Inventors: Ion Bita, Rashmi Raghavendra Rao, Kebin Li
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Patent number: 8300304Abstract: 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 diffuser may be spatially non-uniform and switchable between two or more levels.Type: GrantFiled: February 11, 2009Date of Patent: October 30, 2012Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Brian J. Gally, Gang Xu, Ion Bita, Marek Mienko, Russell Gruhlke
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Publication number: 20120236390Abstract: This disclosure provides systems, methods and apparatus for providing illumination by using a light guide to distribute light and for determining spacing between light turning features in the light guide. In one aspect, a light intensity profile along a first axis is determined and the pitch of light turning features along that first axis is varied based upon this profile, while the pitch along a second crossing axis (for example, an orthogonal axis) and the sizes of the light turning features remain unchanged. In some implementations, an apparatus includes a light guide having an array of light turning features configured to turn light from at least one light emitter. The light turning features can be non-uniformly spaced apart along a first axis such that pitches vary non-monotonically and, along a second axis that crosses the first axis, the light turning features are spaced apart with substantially the same progression.Type: ApplicationFiled: November 16, 2011Publication date: September 20, 2012Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Lai Wang, Marek Mienko, Ion Bita