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1. WO2000025169 - BISTABLE PAPER WHITE DIRECT VIEW DISPLAY

Publication Number WO/2000/025169
Publication Date 04.05.2000
International Application No. PCT/US1999/021456
International Filing Date 14.10.1999
Chapter 2 Demand Filed 24.05.2000
IPC
G02B 26/02 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
02for controlling the intensity of light
G02B 26/08 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
G09F 9/37 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
9Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
30in which the desired character or characters are formed by combining individual elements
37being movable elements
G09G 3/34 2006.01
GPHYSICS
09EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix
34by control of light from an independent source
CPC
G02B 26/02
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
02for controlling the intensity of light
G02B 26/0841
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
0816by means of one or more reflecting elements
0833the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
0841the reflecting element being moved or deformed by electrostatic means
G09G 3/3433
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
3Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
20for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix ; no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
34by control of light from an independent source
3433using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
Applicants
  • MEMSOLUTIONS, INC. [US]/[US]
Inventors
  • LITTLE, Michael, J.
  • ROBINSON, William, P.
  • GIFFORD, Eric, A.
Agents
  • FLESHNER, Mark, L.
Priority Data
09/179,75028.10.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BISTABLE PAPER WHITE DIRECT VIEW DISPLAY
(FR) DISPOSITIF D'AFFICHAGE POUR VISION DIRECTE, BLANC PAPIER, BISTABLE
Abstract
(EN)
A thin, lowpower, paperwhite, direct-view display includes an array of bistable micromirrors (12) that are deflected between two stable states, a dark state in which the mirror (12) covers a portion of the background (14) and a white state in which the mirror (12) uncovers the background (14). The drive electronics (22, 24, 26) are similar to those used in multiplexed LCDs but are modified in order to drive the micromirrors (12) to one of their two stable states. The micromirrors (12) in the enabled row are attracted up or down with sufficient force to exceed the micromirrors' bistable threshold and deflect the micromirrors to their dark and white states, respectively. The attractive forces on the micromirrors in the remaining non-enabled rows are insufficient to exceed the micromirrors' bistable threshold so that the micromirrors remain in their current stable state.
(FR)
Dispositif d'affichage mince, pour vision directe, blanc papier, de faible puissance, comprenant un ensemble de micro-miroirs bistables (12) qui sont déviés entre deux états stables, à savoir, un état obscur, dans lequel le miroir (12) recouvre une portion du fond (14), et un état blanc, dans lequel le miroir (12) découvre le fond (22, 24, 26). L'électronique de commande (14) est similaire à celle utilisée dans les LCD multiplexés, mais est modifiée en vue de déplacer les micro-miroirs (12) vers l'un de leurs deux états stables. Les micro-miroirs (12) dans la rangée autorisée, sont attirés vers le haut ou vers le bas avec une force suffisante pour dépasser le seuil bistable des micro-miroirs et dévier les micro-miroirs vers leurs états, respectivement, obscur et blanc. Les forces d'attraction exercées sur les micro-miroirs dans les rangées restantes non autorisées sont insuffisantes pour dépasser le seuil bistable des micro-miroirs, de sorte que les micro-miroirs demeurent dans leur état de stabilité habituel.
Latest bibliographic data on file with the International Bureau