Hewlett-packard Development Company, L.p.

Jeffrey Todd Mabeck

Gregg Combs

Jong-Souk Yeo

Zhang-Lin Zhou

Pavel Kornilovich

Tim R Koch

Albert Teishev

Yaron Grinwald

Neel Banerjee

Stella Stolin Roditi

Yigal Berson

Peter Mardilovich

Richard H Henze

Kevin E Swier

Brad Benson

Niranjan Thirukkovalur

Peter S Nyholm

Anton Nicholas Clarkson

Donald Milton Hill

Gregg Alan Combs

Technology is described for extending battery life for a rechargeable battery. The method can include estimating a desired energy storage for the rechargeable battery in an electronic device during an operating time period. Expected active periods for the rechargeable battery can be determined. A defined charge voltage can be computed based on the desired energy storage and expected active periods of the rechargeable battery in the electronic device. In addition, the rechargeable battery can be charged to the defined charge voltage.

Extending battery life for a rechargeable battery

An electronic ink containing charged particles includes a combination of resin particles, a pigment, and a charge director. The resin particles exhibit an average particle size less than 1.0 micron and contain a resin that exhibits a molecular weight of 500 to 20,000. The pigment is loaded on the resin particles. The charge director can physically associate with the resin particles. The charged particles may be negative or positive.

Electronic inks and displays and image displaying methods

Electronic inks are disclosed herein. The electronic ink includes a non-polar carrier fluid, a plurality of positively charged colorant particles dispersed in the non-polar carrier fluid, and a plurality of reverse co-micelles including a basic charge director and an acidic charge controlling agent. The basic charge director has a molecular weight that is within 5000 of a molecular weight of the acidic charge controlling agent.

Electronic inks

A display includes a plurality of display elements. Each display element includes two opposed electrodes, a first dielectric layer, a fluid including a plurality of colorants, and a second dielectric layer. The first dielectric layer is disposed between the electrodes and has at least one reservoir defined therein. The second dielectric layer exhibits non-linear resistance, and is disposed on at least one of the electrodes and adjacent to the fluid. The fluid is disposed in a space defined between the electrodes, and the plurality of colorants is configured to move in response to an applied electric field.

Display

Battery pack

In one embodiment, a display element includes a first electrode, a second electrode, and a dielectric layer on the second electrode. The dielectric layer has recess regions therein. The display element includes an opaque layer on the second electrode within each recess region and a fluid with colorant particles between the first electrode and the second electrode.

Display element

An electro-optical display includes colorant particles that are suspended in a carrier fluid. The colorant particles are controlled by three different types of electrodes. An exposed electrode acts on the colorant particles in an electrokinetic manner by compacting the colorant particles. A passivated electrode acts on the colorant particles in an electrostatic manner by holding the colorant particles once compacted. A reference electrode attracts the colorant particles to compaction areas.

Electro-optical display

Electro-optical display systems are disclosed. An electro-optical display system may include a display volume containing a fluid having a plurality of colorant particles; a dielectric layer adjacent the display volume, the dielectric layer including recessed regions configured to contain the plurality of colorant particles; a plurality of electrodes configured to selectively move the plurality of colorant particles between a compacted position in which all or nearly all of the plurality of colorant particles are in the recessed regions, and a spread position in which all or nearly all of the plurality of colorant particles are spread across the display volume; and at least one color filter configured to absorb at least one wavelength of light.

Electro-optical display systems

A display system encompasses electrodes that induce a convective flow of a carrier fluid that transports a colorant species that is suspended in the carrier fluid. At least one of the convection flow, speed, and direction of the colorant species is controlled by operation of the electrodes.

Growing community of inventors

Corvallis, OR, United States of America

Jeffrey Todd Mabeck