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公开(公告)号：DE19536454B4
公开(公告)日：2006-03-09
申请号：DE19536454
申请日：1995-09-29
Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
Inventor： ARNDT KARLHEINZ , BRUNNER HERBERT , SCHELLHORN FRANZ , WAITL GUENTHER
IPC: H01L31/0203 , H01L31/0232 , H01L31/024 , H01L31/109 , H01L33/48 , H01L33/60 , H01L33/62 , H01L33/64
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公开(公告)号：DE59913882D1
公开(公告)日：2006-11-09
申请号：DE59913882
申请日：1999-12-29
Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
Inventor： BACHL BERNHARD , SCHELLHORN FRANZ , KIRCHBERGER GUENTER , WAITL GUENTER , BRUNNER HERBERT
IPC: F21V8/00 , F21Y101/02 , G02B1/04 , G02B6/00 , G02B6/42 , G02F1/13357 , G09F9/00 , G09F9/35
Abstract: A light source element is employed back-lighting of liquid crystal displays and that comprises an obliquely placed light exit face and/or light entry face. At its surfaces, the light waveguide is surrounded by reflectors into which suitable aperture regions are potentially formed. A plurality of light sources and/or a more direct view is provided and, thus, a corresponding increase of the luminance results. A method is also provided for the manufacture of a light source element with an integrated reflector.
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公开(公告)号：DE102005020908A1
公开(公告)日：2006-08-31
申请号：DE102005020908
申请日：2005-05-04
Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
Inventor： WANNINGER MARIO , BLUEMEL SIMON , SCHELLHORN FRANZ , WAITL GUENTER
Abstract: The device has a semiconductor chip and an optical unit (2) comprising a radiation emission surface (4) for attaching at an optoelectronic component. The emission surface has a concave curved partial region (7) and a convex curved partial region which partially surrounds the concave curved partial region in a distance to the optical axis. The optical axis proceeds through the concave curved partial region.
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公开(公告)号：DE50013044D1
公开(公告)日：2006-08-03
申请号：DE50013044
申请日：2000-04-01
Inventor： BIEBL ALOIS , SCHELLHORN FRANZ , HIRSCHMANN GUENTHER
Abstract: The drive circuit is suitable for an LED array, comprising a number of clusters of LEDs, with one cluster comprising a number of LEDs which are arranged in series and are connected to a supply voltage (UBatt). A semiconductor switch (transistor T) is arranged in series between the LED and the supply voltage and allows the LED current to be supplied in a pulsed manner. A measurement resistor (Rshunt) for measuring the LED current is arranged in series between the LED and ground, with a control loop controlling the semiconductor switch such that a constant mean value of the LED current is achieved.
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公开(公告)号：DE19549818B4
公开(公告)日：2010-03-18
申请号：DE19549818
申请日：1995-09-29
Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
Inventor： ARNDT KARLHEINZ , BRUNNER HERBERT , SCHELLHORN FRANZ , WAITL GUENTHER
IPC: H01L33/54 , H01L31/02 , H01L31/0203 , H01L31/0232 , H01L31/024 , H01L33/48 , H01L33/60 , H01L33/64
Abstract: The semiconductor element includes a light transmitting and/or receiving semiconductor chip (1), a lead frame (2), and a sheathing (3). The chip is supported by the chip carrier surface of a lead frame. The chip carrier surface is recessed (4) in the region supporting the semiconductor chip, with the inside surfaces of the recess coated so that they act as a reflector for the transmitted and/or received light. Pref. part of the chip carrier surface is enclosed by the sheathing, with the terminals (11,12) for the semiconductor component extending from the sheathing on opposite sides. A connection part (10) to the terminals is provided at a distance from the chip carrier. The sheathing may be formed entirely from a transparent material, or from an opaque material with a window of a transparent material aligned with the part of the chip carrier surface supporting the semiconductor chip.
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Patent Agency Ranking
公开(公告)号：CA2341657A1
公开(公告)日：2001-01-11
申请号：CA2341657
申请日：2000-04-01
Inventor： BIEBL ALOIS , HIRSCHMANN GUNTHER , SCHELLHORN FRANZ
Abstract: The invention relates to a control circuit for an LED array, comprising several LED lines, whereby a line consists of several LEDs mounted in series and connected to a supply current (UBatt). A semiconductor switch (Transisto r T) is connected in series between the LED and the supply current and makes i t possible to supply the LED current in a clocked manner. A measuring shunt (RShunt) for measuring the LED current is connected in series between the LE D and the ground, whereby a feedback control circuit regulates the semiconduct or switch in such a way that a constant mean value of the LED current is obtain ed.
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公开(公告)号：DE102005042523A1
公开(公告)日：2006-12-07
申请号：DE102005042523
申请日：2005-09-07
Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
Inventor： SCHELLHORN FRANZ , KLICK GUNNAR , OTT HUBERT , BOGNER GEORG , WANNINGER MARIO
IPC: F21V8/00 , G02B6/00 , G02B6/42 , G02F1/13357
Abstract: An illumination device is specified which has a light source (1) suitable for coupling divergent electromagnetic radiation (6) into an optical waveguide (2), the electromagnetic radiation (6) being guided in the optical waveguide (2) on the basis of total reflection, the optical waveguide (2) being suitable for changing a main radiating direction (17) of the electromagnetic radiation (6), and the optical waveguide (2) being formed in one piece. Light-emitting diodes are preferably used as the light source (1). The illumination device is particularly well suited to the backlighting of displays.
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公开(公告)号：AT340967T
公开(公告)日：2006-10-15
申请号：AT99966896
申请日：1999-12-29
Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
Inventor： BACHL BERNHARD , SCHELLHORN FRANZ , KIRCHBERGER GUENTER , WAITL GUENTER , BRUNNER HERBERT
IPC: F21V8/00 , F21Y101/02 , G02B1/04 , G02B6/00 , G02B6/42 , G02F1/13357 , G09F9/00 , G09F9/35
Abstract: A light source element is employed back-lighting of liquid crystal displays and that comprises an obliquely placed light exit face and/or light entry face. At its surfaces, the light waveguide is surrounded by reflectors into which suitable aperture regions are potentially formed. A plurality of light sources and/or a more direct view is provided and, thus, a corresponding increase of the luminance results. A method is also provided for the manufacture of a light source element with an integrated reflector.
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公开(公告)号：AT331422T
公开(公告)日：2006-07-15
申请号：AT00926699
申请日：2000-04-01
Inventor： BIEBL ALOIS , SCHELLHORN FRANZ , HIRSCHMANN GUENTHER
Abstract: The drive circuit is suitable for an LED array, comprising a number of clusters of LEDs, with one cluster comprising a number of LEDs which are arranged in series and are connected to a supply voltage (UBatt). A semiconductor switch (transistor T) is arranged in series between the LED and the supply voltage and allows the LED current to be supplied in a pulsed manner. A measurement resistor (Rshunt) for measuring the LED current is arranged in series between the LED and ground, with a control loop controlling the semiconductor switch such that a constant mean value of the LED current is achieved.
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公开(公告)号：DE10229064A1
公开(公告)日：2004-01-22
申请号：DE10229064
申请日：2002-06-28
Applicant: OSRAM OPTO SEMICONDUCTORS GMBH
Inventor： KIRCHBERGER GUENTER , SCHELLHORN FRANZ
IPC: F21V8/00 , G02B6/00 , F21S2/00 , G02F1/13357 , G09F13/18
Abstract: The device has at least one glass plate (3) with a light outlet surface (6) and several three-dimensional structures (5) in the form of hollow shapes in the glass plate. At least one light source (4) is arranged on at least one lateral surface of the glass plate. A reflective or diffusing film is provided on the surface (9) of the glass plate opposite the light outlet surface and at least partly on the sides only near the light source(s).
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