US PATENT SUBCLASS 438 / FOR 100
.~ Etching of semiconductor precursor, substrates, and devices used in an electrical function (156/625.1)


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438 /   HD   SEMICONDUCTOR DEVICE MANUFACTURING: PROCESS

983  DF  ZENER DIODES {1}
FOR 100.~ Etching of semiconductor precursor, substrates, and devices used in an electrical function (156/625.1) {17}
FOR 101  DF  .~.~> Measuring, testing, or inspecting (156/626.1) {1}
FOR 103  DF  .~.~> Altering the etchability of a substrate by alloying, diffusing, or chemical reacting (156/628.1)
FOR 104  DF  .~.~> With uniting of preforms (e.g., laminating, etc.) (156/629.1) {2}
FOR 110  DF  .~.~> With in situ activation or combining of etching components on surface (156/635.1)
FOR 111  DF  .~.~> With thin film of etchant between relatively moving substrate and conforming surface (e.g., chemical lapping, etc.) (156/636.1)
FOR 112  DF  .~.~> With relative movement between the substrate and a confined pool of etchant (156/637.1) {2}
FOR 115  DF  .~.~> Projection of etchant against a moving substrate or controlling the angle or pattern of projected etchant (156/640.1)
FOR 116  DF  .~.~> Recycling or regenerating etchant (156/642.1)
FOR 117  DF  .~.~> With treatment by high energy radiation or plasma (e.g., ion beam, etc.) (156/643.1)
FOR 118  DF  .~.~> Forming or increasing the size of an aperture (156/644.1)
FOR 119  DF  .~.~> With mechanical deformation, severing, or abrading of a substrate (156/ 645.1)
FOR 120  DF  .~.~> Etchant is a gas (156/646.1)
FOR 121  DF  .~.~> Etching according to crystalline planes (156/647.1)
FOR 122  DF  .~.~> Etching isolates or modifies a junction in a barrier layer (156/648.1) {1}
FOR 124  DF  .~.~> Sequential application of etchant material (156/650.1) {1}
FOR 128  DF  .~.~> Differential etching of a substrate (156/654.1) {2}
FOR 134  DF  .~.~> Silicon, germanium, or gallium containing substrate (156/662.1)


DEFINITION

Classification: 438/FOR.100

Etching of semiconductor precursor, substrates, and devices used in an electrical function:

Foreign art collection for processes directed to contacting a solid semiconductive precursor, substrate, or device used in

an electrical function, with a chemical reagent to remove only a portion or constituent part of the solid semiconductive precursor, substrate, or device.