Motorola Corporation

Ji-Hai Xu

Hsing-Chung Lee

Franky So

Jenn-Hwa Huang

Song Q Shi

John Michael Parsey, Jr

Xi-Qing Sun

Thomas B Harvey, Iii

Rong-Ting Huang

Samuel L Coffman

Vi-en Choong

A series of switchable and tunable filters is provided. The filters are manufactured using coplanar waveguide fabrication techniques and micro-electro-mechanical (MEM) system switches. By making a MEM switch conductive to connect two portions of a filter element, a filter inductor is implemented. By making the MEM switch non-conductive, a filter capacitor is implemented. This results in smaller filters that can be either switched between a band pass filter and a low pass filter or switched between operating ranges.

Switchable and tunable coplanar waveguide filters

A micro electro-mechanical systems device having variable capacitance is controllable over the full dynamic range and not subject to the &ldquo;snap effect&rdquo; common in the prior art. The device features an electrostatic driver ( ) having a driver capacitor of fixed capacitance ( ) in series with a second driver capacitor of variable capacitance ( ). A MEMS variable capacitor ( ) is controlled by applying an actuation voltage potential to the electrostatic driver ( ). The electrostatic driver ( ) and MEMS variable capacitor ( ) are integrated in a single, monolithic device.

MEMS variable capacitor with stabilized electrostatic drive and method therefor

A Micro-Electromechanical Systems (MEMS) device ( ) having conductively filled vias ( ). A MEMS component ( ) is formed on a substrate ( ). The substrate has conductively filled vias ( ) extending therethrough. The MEMS component ( ) is electrically coupled to the conductively filled vias ( ). The MEMS component ( ) is covered by a protective cap ( ). An electrical interconnect ( ) is formed on a bottom surface of the substrate ( ) for transmission of electrical signals to the MEMS component ( ), rather than using wirebonds.

Micro-electromechanical system device

Method for fabricating MEMS variable capacitor with stabilized electrostatic drive

Organic electroluminescent apparatus including an organic electroluminescent device for emitting blue-green light. A microcavity structure receives the blue-green light and is tuned to a resonance such that the blue-green light is enhanced to blue and green light. A color converting medium receives and absorbs the blue-green light and emits red light in response thereto.

Organic electroluminescent apparatus

A method of purifying a primary color including providing an organic light emitting diode having a diode light output with a broad spectrum that includes a fraction of the primary color. A microcavity structure is formed in cooperation with the organic light emitting diode to define an optical length of the microcavity structure, and the optical length of the microcavity structure being such that light emitted from the microcavity structure is the primary color, purified.

Method of purifying a primary color generated by an OED

A Micro-Electromechanical System (MEMS) switch (,) having a single, center hinge (,) which supports a membrane-type electrode (,) on a substrate (,). The single, center hinge (,) has a control electrode (,) coupled to the substrate (,) by an anchor (,), a hinge collar (,), a set of hinge arms (,). The control electrode (,) has a shorting bar (,) coupled thereto and is electrically isolated from another control electrode (,), which is formed on the substrate (,). A travel stop (,) is positioned between the substrate and the control electrode (,). Another aspect of the present invention is a Single Pole, Double Throw (SPDT) switch (,) into which is incorporated the single, center hinge (,) and the travel stop (,).

Micro-electromechanical switch

Organic electroluminescent apparatus including an organic electroluminescent device (11) for emitting blue to blue-green light. A microcavity structure (12) receives the blue to blue-green light and has an optical length such that the blue to blue-green light is enhanced to blue light. A color converting medium (23) receives and absorbs the blue light and emits red light in response thereto.

Organic electroluminescent apparatus with mircrocavity

A white light generating organic electroluminescent device including an organic light emitting diode emitting a broad spectrum light including a component of each primary color. A multi-mode microcavity structure is positioned to cooperate with the diode defining an optical length of the microcavity structure to enhance the broad spectrum light and obtain multiple resonant peaks, one at each primary color. A plurality of filters are positioned to receive and adjust the multiple resonant peaks to provide substantially balanced multiple resonant peaks.

White light generating organic electroluminescent device and method of

Light emitting apparatus comprising a thin film transistor having a current carrying terminal, an organic electroluminescent device for emitting light having a broad spectrum and having a first terminal connected to current carrying terminal, a color converting medium for absorbing light coupled thereto and emitting light in response to absorbed light, and a microcavity coupling emitted light from the organic electroluminescent device to the color converting medium.

Light emitting apparatus and method of fabrication

Light emitting apparatus is disclosed including a thin film transistor, a capacitor and an organic electroluminescent device. The thin film transistor includes a semiconductive layer having spaced apart first and second doped regions defining first and second current carrying terminals with a channel therebetween, an insulating layer overlying the channel and a control terminal formed on the insulating layer. A portion of the control terminal overlies a portion of the first doped region to form the capacitor. The organic electroluminescent device includes a first terminal connected to the second current carrying terminal.

Light-emitting apparatus and method of fabrication

An organic electroluminescent display device includes a plurality of pixels formed on a substrate, each pixel including a plurality of different light influencing elements disposed on the substrate. Deposited atop each light influencing element is an organic electroluminescent display element which is adapted to emit light of a preselected wavelength. A layer of an insulating, planarizing material is disposed between the light influencing elements and the OED. Each of the light influencing elements is adapted to generate a different effect in response to light of a preselected wavelength incident thereon. In this way, it is possible to achieve a red, green, blue organic electroluminescent display assembly using a single organic electroluminescent display device.

Multicolored organic electroluminescent display

An organic electroluminescent device with enhanced performance includes anode and cathode electrodes with organic material, single or multiple layers, positioned therebetween and in juxtaposition to each of the electrodes. The organic material is doped with an AMC dopant with a concentration in a range of approximately 0.1 Wt % to 15 Wt % in a region of the organic material adjacent to the cathode electrode. This doped region has a thickness in a range of approximately 20 .ANG. to 600 .ANG.. The dopant includes either a low work function alkaline metal compound, such as LiF, LiCl, KBr, MgF.sub.2, LiO.sub.2, MgO.sub.x, CaO.sub.x, and CsO.sub.x or a low work function alkaline metal alloy, such as Li--Al, Li--In, Sr--Al, Cs--Al.

Organic electroluminescent device with enhanced performance

An OED with a first microcavity including a first transparent spacer positioned adjacent the diode light output and a first mirror stack positioned on the first spacer to reflect light back into the OED and to define an optical length of the first microcavity. The optical length of the first microcavity being such that light emitted from the first microcavity has a first spectrum. A second microcavity including a second transparent spacer positioned adjacent the first microcavity and a second mirror stack positioned on the second spacer to reflect light toward the first microcavity and to define an optical length of the second microcavity. The optical length of the second microcavity being such that light emitted from the second microcavity has a second spectrum. Additional microcavities can be placed in the structure to further enhance and alter the light spectrum.

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Gilbert, AZ, United States of America

Ji-Hai Xu