Patents by Inventor Jeroen J. M. Vleggaar
Jeroen J. M. Vleggaar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6689626Abstract: The invention relates to a substrate comprising a glass sheet (1) having a thickness which is smaller than or equal to 0.1 mm, the glass sheet (1) being provided with a layer of a synthetic resin material (2) having a thickness which is smaller than or equal to that of the glass sheet (1). This substrate proves to be flexible. In addition, the substrate cracks less easily, so that it can be processed more readily. The substrate may be used, for example, in light-emitting devices, such as a poly-LED or PALC.Type: GrantFiled: July 10, 2001Date of Patent: February 10, 2004Assignee: Koninklijke Philips Electronics N.V.Inventors: Marcellinus P. C. M. Krijn, Marinus J. J. Dona, Johannes M. M. Swinkels, Jeroen J. M. Vleggaar
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Patent number: 6503644Abstract: An organic electroluminescent device whose electroluminescence efficiency is independent of the work function of the cathode material, and whose service life under ambient conditions is excellent without the necessity of taking additional protective measures. These properties are obtained as a result of the fact that an organic layer of the device comprises mobile ions which are compensated by immobile ions in such a manner that the polarity of all mobile ions is the same.Type: GrantFiled: October 9, 2001Date of Patent: January 7, 2003Assignee: Koninklijke Philips Electronics N.V.Inventors: Hermannus F. M. Schoo, Robert J. C. E. Demandt, Jeroen J. M. Vleggaar, Coen T. H. F. Liedenbaum
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Publication number: 20020037431Abstract: The invention provides an organic electroluminescent device whose electroluminescence efficiency is independent of the work function of the cathode material, and whose service life under ambient conditions is excellent without the necessity of taking additional protective measures. These properties are obtained as a result of the fact that an organic layer of the device comprises mobile ions which are compensated by immobile ions in such a manner that the polarity of all mobile ions is the same.Type: ApplicationFiled: October 9, 2001Publication date: March 28, 2002Applicant: PHILIPS CORPORATIONInventors: Hermannus F.M. Schoo, Robert J.C.E. Demandt, Jeroen J.M. Vleggaar, Coen T.H.F. Liedenbaum
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Publication number: 20010050372Abstract: The invention relates to a substrate comprising a glass sheet (1) having a thickness which is smaller than or equal to 0.1 mm, the glass sheet (1) being provided with a layer of a synthetic resin material (2) having a thickness which is smaller than or equal to that of the glass sheet (1). This substrate proves to be flexible. In addition, the substrate cracks less easily, so that it can be processed more readily. The substrate may be used, for example, in light-emitting devices, such as a poly-LED or PALC.Type: ApplicationFiled: July 10, 2001Publication date: December 13, 2001Applicant: U.S. Philips CorporationInventors: Marcellinus P.C.M. Krijn, Marinus J.J. Dona, Johannes M.M. Swinkels, Jeroen J.M. Vleggaar
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Patent number: 6326091Abstract: An organic electroluminescent device whose electroluminescence efficiency is independent of the work function of the cathode material, and whose service life under ambient conditions is excellent without the necessity of taking additional protective measures. These properties are obtained as a result of the fact that an organic layer of the device comprises mobile ions which are compensated by immobile ions in such a manner than the polarity of all mobile ions is the same.Type: GrantFiled: April 24, 1997Date of Patent: December 4, 2001Assignee: U. S. Philips CorporationInventors: Hermannus F. M. Schoo, Robert J. C. E. Demandt, Jeroen J. M. Vleggaar, Coen T. H. F. Liedenbaum
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Patent number: 6281525Abstract: The invention relates to a substrate comprising a glass sheet (1) having a thickness which is smaller than or equal to 0.1 mm, the glass sheet (1) being provided with a layer of a synthetic resin material (2) having a thickness which is smaller than or equal to that of the glass sheet (1). This substrate proves to be flexible. In addition, the substrate cracks less easily, so that it can be processed more readily. The substrate may be used, for example, in light-emitting devices, such as a poly-LED or PALC.Type: GrantFiled: July 13, 1999Date of Patent: August 28, 2001Assignee: U.S. Philips CorporationInventors: Marcellinus P. C. M. Krijn, Marinus J. J. Dona, Johannes M. M. Swinkels, Jeroen J. M. Vleggaar
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Patent number: 6160346Abstract: An organic electroluminescent device includes an electroluminescent element, which is enclosed in a housing. The deterioration in uniformity of the luminous surface, which occurs when an electroluminescent device is stored or operated under ambient conditions, and which deterioration manifests itself, for example, in the form of "dark spots", can be overcome to a substantial degree in accordance with the invention by using an airtight and waterproof housing which is sealed by a low-melting metal, such as a BiSn alloy.Type: GrantFiled: May 27, 1997Date of Patent: December 12, 2000Assignee: U.S. Philips CorporationInventors: Jeroen J. M. Vleggaar, Yang Yang, Marcus G. Van Munster, Petrus J. M. Peters
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Patent number: 5955837Abstract: The illumination system (1) has a substrate (2) and an active layer (3) comprising an electroluminescent material, in which the active layer (3) is present between a first, optically transparent electrode layer (5) and a second electrode layer (7). The illumination system (1) is characterized in that a light-scattering layer (28) comprising a medium having light-scattering properties is present in a forward direction (29) with respect to the active layer (3), in which the non-scattered fraction of a (collimated) light beam, when passed through the light-scattering layer (8) in the forward direction (29), is in the range between 0.05 and 0.8, preferably in the range between 0.1 and 0.5. The light-scattering properties of the medium are preferably stronger as the light is more obliquely incident, as is achieved by using birefringent particles and/or media. A very suitable light-scattering layer (28) is a (half) monolayer of TiO.sub.Type: GrantFiled: October 10, 1997Date of Patent: September 21, 1999Assignee: U.S. Philips CorporationInventors: Jeroen J. L. Horikx, Coen T. H. F. Liedenbaum, Martinus B. van der Mark, Adrianus J. M. Berntsen, Jeroen J. M. Vleggaar, Henri M. J. Boots
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Patent number: 5902689Abstract: A description is given of a method of providing an electroluminescent device (20) comprising an active layer (5) of conjugated 2,5-alkyl- or alkoxy-substituted poly(p-phenylene vinylene) with inactive regions (51) and emissive regions (52) by means of patterned irradiation with UV light. Both regions (51) and (52) of the active layer (5) show a clear difference in electroluminescence, electrical resistance and solubility. By means of the above-described effects, displays can be manufactured without making use of structured electrode layers (3) and (11).Type: GrantFiled: August 1, 1996Date of Patent: May 11, 1999Assignee: U.S. Philips CorporationInventors: Jeroen J. M. Vleggaar, Adrianus J. M. Berntsen, Aemilianus G. J. Staring, Robert J. C. E. Demandt, Hermanus F. M. Schoo, Coen T. H. F. Liedenbaum