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High resolution display

a high-resolution, display technology, applied in the field of electronic document distribution, can solve the problems of poor quality of computer-display documents relative to hard-copy printing, poor portability of crt displays, eye and body discomfort, etc., and achieve the effect of reducing costs

Inactive Publication Date: 2003-04-17
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

0095] For compactness of device and user convenience it may be advantageous to have a retractable screen.
0096] As illustrated by FIG. 7AA, wireless transceiver communication over the Internet (represented by cloud symbol 701) to, and document retrieval from, document content service provider(s) 703 is facilitated and greatly enhanced by the incorporation of the display technology in accordance with the present invention. The commercial appe...

Problems solved by technology

Further, the user quite often reads such hard copy only once and then discards it or stores it for future reference.
However, currently working against the clear advantages of electronic document distribution, computer displayed documents are of significantly poor quality relative to hard copy print and, at the least, less comfortably read.
Moreover, CRT displays are not portable and require the user to read documents at essentially fixed focal length and fixed body position for long periods of time, leading to eye and body discomfort.
Flat panel, matrix LCD devices are lighter weight and more portable for easier focal distance and body repositioning, but are of poorer contrast and limited available viewing angle, leading to further reading discomfort and annoyance.
Viewability of such displays also is affected by the ambient lighting in which the apparatus is being used; the higher the ambient light conditions, the worse the viewability of the displayed image or information.
Note importantly that the resolution of the screen is limited by the technology related to interconnect wiring--namely, between the gate and data lines and the microprocessor or memory sending data--and driver size for each pixel.
Moreover, such a device requires power to maintain each pixel in its current state and continually to backlight the crystal screen.
It can be noted that, in commercial practice, displays made from these colorants have relatively poor contrast and color.
Thus, these technologies do not provide a promising extendability and scalability to high resolution color displays because the devices switch only between two opaque colors, disallowing passage of light from different layers for a given pixel.
Still further, as is these technologies produce a visually poor display resolution relative to hard copy print due to the relatively large size of the microcapsule spheres.
Moreover, the spheres are bichromal, limiting application to two-color rather than true full color display.
Further still, the need for overlapping spheres in multiple layers to achieve adequate color density limits pixel resolution.
Yet another limitation is that these technologies suffer from poor pixel switching times in comparison to standard CRT and LCD technology.
Such switching voltages add high cost to the pixel drive electronics, similar to that of the high-end matrix LCD apparatus.

Method used

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Examples

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Embodiment Construction

[0041] Reference is made now in detail to a specific embodiment of the present invention which illustrates the best mode presently contemplated by the inventors for practicing the invention. Alternative embodiments are also briefly described as applicable.

DEFINITIONS

[0042] The following terms and ideas are applicable to both the present discussion and the Appendix hereto.

[0043] The term "self-assembled" as used herein refers to a system that naturally adopts some geometric pattern because of the identity of the components of the system; the system achieves at least a local minimum in its energy by adopting this configuration.

[0044] The term "singly configurable" means that a switch can change its state only once via an irreversible process such as an oxidation or reduction reaction; such a switch can be the basis of a programmable read-only memory (PROM), for example.

[0045] The term "reconfigurable" means that a switch can change its state multiple times via a reversible process suc...

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PUM

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Abstract

Method and apparatus for document content publishing, distribution, and display, including a method of doing business. An electronic display includes at least one reusable imaging stratum forming a pixel array of a bi-modal molecular colorant. Preferably, the molecules have bistable orientations. The imaging stratum having a viewing surface and a back surface. Adjacent said back surface is a background stratum. An addressing device is mounted for selectively switching colorant molecules of the imaging stratum between a transparent orientation and a color-exhibiting orientation. The present invention is adaptable to reflective light, back lit, and projection implementations.

Description

(2) CROSS-REFERENCE TO RELATED APPLICATIONS[0001] None.(3) STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002] None.(4) REFERENCE TO AN APPENDIX[0003] The present application includes a hard copy appendix comprising pertinent specification pages and drawings of co-inventors' U.S. patent application Ser. No. 09 / 844,862, by ZHANG et al. for MOLECULAR MECHANICAL DEVICES WITH A BAND GAP CHANGE ACTIVATED BY AN ELECTRIC FIELD FOR OPTICAL SWITCHING APPLICATION (Hewlett-Packard Company, assignee) as relates to subject matter claimed in accordance with the present invention.(5) BACKGROUND OF THE INVENTION[0004] 1. Field of the Invention[0005] The present invention relates generally to electronic document distribution and more particularly to a reusable, high resolution, display providing visual characteristics comparable to hard copy print.[0006] 2. Description of Related Art[0007] There is growing interest in electronic document distribution in place of hard copy. The adve...

Claims

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Application Information

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IPC IPC(8): G02F1/17
CPCB82Y20/00G02F1/15B82Y30/00G02F1/17
Inventor VINCENT, KENT D.WILLIAMS, R. STANLEYZHANG, XIAO-AN
Owner HEWLETT PACKARD DEV CO LP
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