公开(公告)号：DE69838476D1

公开(公告)日：2007-11-08

申请号：DE69838476

申请日：1998-12-08

Applicant: IBM

Inventor： BEETESON JOHN STUART ,  KNOX ANDREW RAMSAY ,  LOWE ANTHONY CYRIL

IPC: H01J9/12 ,  H01J31/12 ,  H01J1/34 ,  H01J1/46 ,  H01J9/02 ,  H01J29/04 ,  H04N5/68

Abstract: A photo-cathode electron source suitable for use in flat panel displays has an extractor grid means (104) maintained, in use, at a positive potential with respect to the photo-cathode surface. The extractor grid may be used as a carrier for unfired photoemissive material which forms the emission surface of the photo-cathode. The material is deposited on the surface (103) of the photo-cathode means (102) by means of evaporation from the extractor grid (104).

公开(公告)号：GB2334111A

公开(公告)日：1999-08-11

申请号：GB9802287

申请日：1998-02-04

Applicant: IBM

Inventor： LOWE ANTHONY CYRIL

IPC: G02F1/1347

Abstract: A multi layer liquid crystal display cell 100 comprises compartments 114 and 116 separated by a thin transparent dielectric membrane 106 which is supported between substrates 102 and 104 by spacers 108 and 110. Guest-host type liquid crystal mixtures having dielectric anisotropy are contained in compartments 114 and 116. An electric field may be applied across the two compartments by way of conducting electrodes 118 and 120. The electro-optic characteristics of the mixture in compartment 114 differ from those of the mixture in compartment 116 in such a way that the liquid crystal molecules in the former compartment will switch orientation at a first value of the applied electric field and those of the latter compartment will switch at a second (different) value of the applied electric field (fig. 5). A third compartment may be added to the cell.

公开(公告)号：GB2333642A

公开(公告)日：1999-07-28

申请号：GB9801242

申请日：1998-01-21

Applicant: IBM

Inventor： BEETESON JOHN STUART ,  KNOX ANDREW RAMSAY ,  LOWE ANTHONY CYRIL

IPC: H01J9/12 ,  H01J1/34 ,  H01J1/46 ,  H01J29/04 ,  H01J31/12 ,  H04N5/68

Abstract: A photo-cathode electron source suitable for use in flat panel displays has an extractor grid means (104) maintained, in use, at a positive potential with respect to the photo-cathode surface. The extractor grid may be used as a carrier for unfired photoemissive material which forms the emission surface of the photo-cathode. The material is deposited on the surface (103) of the photo-cathode means (102) by means of evaporation from the extractor grid (104).

公开(公告)号：DE69317017T2

公开(公告)日：1998-09-24

申请号：DE69317017

申请日：1993-06-21

Applicant: IBM

Inventor： LOWE ANTHONY CYRIL ,  PIETRZAK CHRISTOPHER C

IPC: G02B26/10 ,  G06F3/033 ,  G06F3/041 ,  G06F3/042 ,  H04N1/04 ,  G06K11/08

Abstract: An input device for a visual display comprises a light source (210) and a scanner (260) for angularly scanning a light beam from the light source (210) across a plane (40). A photodetector (230) detects interruption of the beam by an article positioned in the plane. The scanner (260) comprises a shutter having a linear array of addressable, electrically actuable shutter elements. Each element is operable to transmit or block light from the light source (210) under the control of a corresponding electrical signal. Because the light beam is scanned by a shutter rather than a mechanical scanner, the device is advantageously more reliable than conventional electromechanical optical input devices.

公开(公告)号：DE69937170D1

公开(公告)日：2007-11-08

申请号：DE69937170

申请日：1999-07-01

Applicant: IBM

Inventor： BEETESON JOHN STUART ,  KNICKERBOCKER JOHN ULRICH ,  KNOX ANDREW RAMSAY ,  LOWE ANTHONY CYRIL

IPC: H01J1/46 ,  H01J29/46 ,  H01J3/02 ,  H01J29/02 ,  H01J29/68 ,  H01J31/12

Abstract: An electron source comprises a cathode means, and an extractor grid used to extract electrons from the cathode. The extractor grid is formed by etching a plurality of apertures in the material. A plurality of spacing members for spacing the extractor grid at a constant, predetermined spacing from the cathode are used. Each of the spacing members is formed by etching around a substantial portion of the periphery of the aperture and folding a remaining portion of the periphery of the aperture at substantially a right angle to the planar material.

公开(公告)号：DE19846094A1

公开(公告)日：1999-08-12

申请号：DE19846094

申请日：1998-10-07

Applicant: IBM

Inventor： LOWE ANTHONY CYRIL

IPC: G02F1/1347

Abstract: The cell (100) includes two or more compartments (114,116) separated by thin transparent membranes (106). The electro-optical characteristics of liquid crystal mixtures in the compartments is such that each mixture switches in a different, non-overlapping range of applied electric fields.

公开(公告)号：DE69317017D1

公开(公告)日：1998-03-26

申请号：DE69317017

申请日：1993-06-21

Applicant: IBM

Inventor： LOWE ANTHONY CYRIL ,  PIETRZAK CHRISTOPHER C

IPC: G02B26/10 ,  G06F3/033 ,  G06F3/041 ,  G06F3/042 ,  H04N1/04 ,  G06K11/08

Abstract: An input device for a visual display comprises a light source (210) and a scanner (260) for angularly scanning a light beam from the light source (210) across a plane (40). A photodetector (230) detects interruption of the beam by an article positioned in the plane. The scanner (260) comprises a shutter having a linear array of addressable, electrically actuable shutter elements. Each element is operable to transmit or block light from the light source (210) under the control of a corresponding electrical signal. Because the light beam is scanned by a shutter rather than a mechanical scanner, the device is advantageously more reliable than conventional electromechanical optical input devices.

公开(公告)号：GB2268263A

公开(公告)日：1994-01-05

申请号：GB9213913

申请日：1992-06-30

Applicant: IBM

Inventor： LOWE ANTHONY CYRIL ,  PIETRZAK CHRISTOPHER C

IPC: G02B26/10 ,  G06F3/033 ,  G06F3/041 ,  G06F3/042 ,  H04N1/04 ,  G06K11/08

Abstract: An input device for a visual display comprises a light source (210) and a scanner (260) for angularly scanning a light beam from the light source (210) across a plane (40). A photodetector (230) detects interruption of the beam by an article positioned in the plane. The scanner (260) comprises a shutter having a linear array of addressable, electrically actuable shutter elements. Each element is operable to transmit or block light from the light source (210) under the control of a corresponding electrical signal. Because the light beam is scanned by a shutter rather than a mechanical scanner, the device is advantageously more reliable than conventional electromechanical optical input devices.

公开(公告)号：DE3276267D1

公开(公告)日：1987-06-11

申请号：DE3276267

申请日：1982-12-30

Applicant: IBM

Inventor： LOWE ANTHONY CYRIL ,  DOWDEN BARRY FREDERICK

IPC: G09F9/00 ,  G02F1/01 ,  G02F1/15 ,  G02F1/153 ,  G02F1/161 ,  G02F1/17 ,  G09F9/30

公开(公告)号：DE2815307A1

公开(公告)日：1978-10-26

申请号：DE2815307

申请日：1978-04-08

Applicant: IBM

Inventor： BARCLEY DONALD JOHN ,  BIRD COLIN LEONARD ,  LOWE ANTHONY CYRIL

IPC: G02F1/15 ,  G02F1/153 ,  G02F1/155 ,  G02F1/163 ,  G02F1/17 ,  G09F9/30 ,  G09F9/00

Abstract: An electrochromic display device has an improved counter electrode arrangement. The device has a plurality of display elctrodes and a counter electrode in contact with a first electrolyte of a primary redox system. The counter electrode is charged to a predetermined potential. A secondary redox system is associated with the primary redox system. A secondary electrode in the secondary redox system is electrically connected to the counter electrode to maintain the charge on the counter electrode at a predetermined potential.