Patent for Sale:

Liquid Crystal Projection Display    

A number of LCD projector display system patents.

Overview

The patented inventions include enhancements in the area of:

- field sequential color projection
- two plate LCD projector
- a dichroic mirror and a polarization-rotating device
- a single panel LCLV
- field sequential dichroic light valve
- color separation beam splitter
- ferro-electric liquid crystal light valves
- time-sequential color separator

Benefits of these inventions include, excellent image quality, high brightness, high accuracy, increased pixel resolution, increased color purity of the light, fast response time, fast memory function, lighter in weight, compact, energy efficient, and reduced manufacturing costs.

The seller may consider selling these patents individually.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 349: Liquid Crystal Cells, Elements And Systems

Cells, elements, and systems which include molecules of a material having both liquid and crystalline properties. Included in this class are those which have a significant liquid crystal cell detail or liquid crystal response or properties, and in which the liquid crystal controls or changes the optical properties of electromagnetic radiation such as direction, phase, amplitude, frequency, or polarization state. This class also provides for nominal manufacturing methods for producing significant liquid crystal cell structure.

Subclass 100: For ferroelectric liquid crystal
Subclass 117: Compensator or retarder (i.e., not using liquid crystal cell)
Subclass 119: Multiple compensators
Subclass 5: Projector including liquid crystal cell (s)
Subclass 74: Interconnection of plural cells in series
Subclass 8: Plural light path projectors
Subclass 80: With color formed by different color polarizer or color filter associated with each cell
Subclass 9: Having light separated into S and P polarization
Subclass 96: Polarizer
Subclass 97: Color

Class 348: Television

Generating, processing, transmitting or transiently displaying a sequence of images, either locally or remotely, in which the local light variations composing the images may change with time.

Subclass 336: Color separating optics
Subclass 337: Prism arrangement
Subclass 339: Exclusively dichroic elements
Subclass 742: Color sequential
Subclass E9.027: Using light modulating optical valves (EPO)
Subclass E5.141: The modulator being an array of liquid crystal cells (EPO)

Class 353: Optics: Image Projectors

Projectors for particular types of objects to be projected; such as maps and aerial photographs, targets, transparent plates, information data, microscopic objects, scales and indicators, and stencils or perforated plates. Various other species and types of projectors are also included here such as kaleidoscopic, heliostats, stereoscopic and relief, pointers, gun type, moving images on screens, episcopes and cabinets including screens. Various plural and composite types of projectors are included such as projectors involving plural projected images including multicolor, projectors for images combined with real objects, projectors with manual delineation, and plural projection with a single light source. Projectors selective at the operators choice are also included as where the selection is between a slide and a film strip, between a cabinet and a distant screen, and between opaque and transparency projection.

Subclass 20: POLARIZER OR INTERFERENCE FILTER
Subclass 31: Multicolor picture
Subclass 33: Prism
Subclass 34: Plural projection paths with single light source
Subclass 37: Reflector between lamp and screen
Subclass 84: COLOR FILTER

Class 359: Optical: Systems And Elements

Optical elements included in this class are: Lenses; Polarizers; Diffraction gratings; Prisms; Reflectors; Filters; Projection screens; Optical Modulators; Optical Demodulators. Among the optical systems included in this class are: Compound lens systems; Light reflecting signalling systems (e.g., retroreflectors); stereoscopic systems; Binocular devices; Systems of lenticular elements; Systems involving light interference; Glare reducing systems; Light dividing and combining systems; Light control systems (e.g., light valves); building illumination with natural light; Systems for protecting or shielding elements; Optical systems whose operation depends upon polarizing, diffracting, dispersing, reflecting, or refracting light; kaleidoscopes. Further included are certain apertures, closures, and viewing devices of a specialized nature which involve no intentional reflection, refraction, or filtering of light rays. This class also includes optical elements combined with another type of structure(s) to constitute an optical element combined with a nonoptical structure or a perfection or improvement in the optical element.

Subclass 831: PRISM (INCLUDING MOUNT)
Subclass 833: With reflecting surface