US PATENT SUBCLASS 257 / 79
INCOHERENT LIGHT EMITTER STRUCTURE

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


257 /   HD   ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES)

79INCOHERENT LIGHT EMITTER STRUCTURE {10}
80  DF  .~> In combination with or also constituting light responsive device {3}
86  DF  .~> Active layer of indirect band gap semiconductor {1}
88  DF  .~> Plural light emitting devices (e.g., matrix, 7-segment array) {4}
94  DF  .~> With heterojunction {2}
98  DF  .~> With reflector, opaque mask, or optical element (e.g., lens, optical fiber, index of refraction matching layer, luminescent material layer, filter) integral with device or device enclosure or package
99  DF  .~> With housing or contact structure
100  DF  .~> Encapsulated
101  DF  .~> With particular dopant concentration or concentration profile (e.g., graded junction)
102  DF  .~> With particular dopant material (e.g., Zinc as dopant in GaAs)
103  DF  .~> With particular semiconductor material

DEFINITION

Classification: 257/79

INCOHERENT LIGHT EMITTER STRUCTURE:

(under the class definition) Subject matter wherein the active solid-state device generates incoherent light when subjected to an appropriate input signal.

(1) Note. Lasers (coherent light generators) are classified in Class 372, and patents directed to lasers are not to be cross-referenced in this or indented subclasses unless such patent contains disclosure of a light emitting semiconductor device which is NOT a laser or coherent light generator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13, for incoherent thin physical layer light emitter devices with operating principles as specified therein.

SEE OR SEARCH CLASS

250, Radiant Energy,

552+, for solid-state light source circuits.

313, Electric Lamp and Discharge Devices,

498+, for electric lamp and discharge devices having solid-state luminescent materials, including nominally recited luminescent semiconductor type materials; and subclass 504 for solid-state organic phosphor material luminescent devices.

340, Communications: Electrical,

760+, and 766+ for solid-state light emitting arrays and array elements.

362, Illumination,

84, for light source or light source support and luminescent material and subclass 800 (cross-reference art collection) for light emitting diode light sources.

438, Semiconductor Device Manufacturing: Process, particularly

22+, for methods of forming a semiconductor device which may be emissive of either coherent or incoherent radiation.