1
Frans Leenhouts, Hans Kruger: Low-reflection liquid-crystal display. Siemens Aktiengesellschaft, Herbert L Lerner, Laurence A Greenberg, June 4, 1985: US04521079 (137 worldwide citation)

A liquid crystal display enclosing between two parallel plates a liquid crystal layer which can be switched between two optically different states. The plate surfaces facing each other each carry a matching layer on top of which are the electrodes. On top of the electrode is a first layer system wit ...


2
Dirk J Broer, Johannes A M M Van Haaren, Grietje N Mol, Frans Leenhouts: Illumination system using cholesteric polarizer, linear polarizer for such illumination system and display device comprising such as illumination system. U S Philips Corporation, John C Fox, Dwight H Renfrew, October 20, 1998: US05825444 (27 worldwide citation)

The Application relates to an illumination system comprising a fluorescent lamp and a broadband, cholesteric polarizer. Such a polarizer contains a layer of a polymeric material having a cholesteric order, which material is ordered in such a way that the axis of the molecular helix extends at right ...


3
Frans Leenhouts: Liquid crystal display cell. Hoffman La Roche, George M Gould, Bernard S Leon, A Kate Huffman, January 30, 1990: US04896947 (26 worldwide citation)

A liquid crystal display (LCD) cell comprising a twist nematic liquid crystal disposed between two electrode plates and polarizers and having a positive dielectric anisotropy. The optical path difference .DELTA.n.d is 0.2 to 0.7 .mu.m. The absolute value of the twist angle .phi. can be between 10.de ...


4
Dirk J Broer, Grietje N Mol, Frans Leenhouts: Color filter layer of cholesterically ordered material, and reflective LCD provided with such a color filter layer. U S Philips Corporation, John C Fox, January 23, 2001: US06177216 (17 worldwide citation)

The invention relates to a color filter layer of a cholesterically ordered material, in which the axis of the molecular helix is directed perpendicularly to said layer. According to the invention, the color filter layer comprises at least one dye which is able to absorb undesired colors caused by co ...


5
Frans Leenhouts, Maarten de Zwart: Liquid crystal display with twist angle less than 80 degrees. U S Philips Corporation, Paul R Miller, September 2, 1986: US04609255 (15 worldwide citation)

A liquid crystal display wherein in order to obtain an improved contrast without diminishing the brightness of the display, the angle of twist is reduced in the case of a liquid crystal display according to the rotating cell principle, polarizers with greater extinction power are used and up to 3% b ...


6
Hans Kruger, Frans Leenhouts: Liquid-crystal display with reduced reflection. Siemens Aktiengesellschaft, Herbert L Lerner, Laurence A Greenberg, July 16, 1985: US04529272 (14 worldwide citation)

A liquid crystal display with a liquid crystal layer enclosed by two parallel plates which carry electrodes and on top thereof a first layer system of several dielectric electrodes having refractive indices smaller than 2.2 and a thickness of the layers above the base layer, under 200 nm. The liquid ...


7
Johannes A M M Van Haaren, Dirk J Broer, Frans Leenhouts: Liquid crystal display device having a cholesteric order with a pitch of helix less than 0.25 microns and a retardation foil. U S Philips Corporation, Norman N Spain, August 25, 1998: US05798808 (14 worldwide citation)

In a liquid crystal display device the number of grey levels is increased by means of a compensation foil comprising a layer having a cholesteric ordering with a helix pattern, in which the pitch of the helix is smaller than (0.26-0.31..DELTA.n) .mu.m, in which .DELTA.n is the optical anisotropy of ...


8
Frans Leenhouts, Glenn J Adler: Touch sensor display. Koninklijke Philips Electronics, Aaron Waxler, July 23, 2002: US06424403 (12 worldwide citation)

Manufacture of a display device for a touch panel display, for example, an LCD (


9
Frans Leenhouts, Nicolaas A J M Van Aerle: Multi-domain LCD with subpixels having twist angles with opposite twist sense of within 60 and small/greater 90 degrees. Flat Panel Display Co, John C Fox, March 2, 1999: US05877831 (10 worldwide citation)

Nematic liquid crystal display device, in which the isocontrast curve has obtained a more symmetrical shape by combining two and four sub-pixels with twist angles which are smaller than 90 degrees, at which the sub-pixels are obtained by providing different orientation directions (11) in an orientin ...


10
Frans Leenhouts, Martin Schadt: Liquid crystal display. Hoffmann La Roche, George M Gould, Bernard S Leon, George W Johnston, April 2, 1991: US05004324 (9 worldwide citation)

A liquid crystal display (LCD) cell comprising a highly twisted nematic liquid crystal disposed between two electrode plates and polarizers and having a positive dielectric anisotropy. The optical path difference .DELTA.n.d is 0.2 to 0.7 .mu.m and the ratio d/p of thickness to pitch is 0.2 to 0.6. T ...