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Class Information
Number: 257/E21.023
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Processes or apparatus adapted for manufacture or treatment of semiconductor or solid-state devices or of parts thereof (epo) > Manufacture or treatment of semiconductor device (epo) > Making mask on semicond uctor body for further photolithographic processing (epo)
Description: This subclass is indented under subclass E21.002. This subclass is substantially the same in scope as ECLA classification H01L21/027.

Sub-classes under this class:

Class Number Class Name Patents
257/E21.033 Comprising inorganic layer (epo) 500
257/E21.024 Comprising organic layer (epo) 196

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8709909 Method for manufacturing a substrate for a display device Apr. 29, 2014
8658440 Nitride semiconductor crystal with surface texture Feb. 25, 2014
8652886 Thin film transistor array substrate for a display panel and a method for manufacturing a thin film transistor array substrate for a display panel Feb. 18, 2014
8642428 Semiconductor device including line-type active region and method for manufacturing the same Feb. 4, 2014
8637363 Methods of manufacturing a semiconductor device having a node array Jan. 28, 2014
8618547 Mask assembly and organic light emitting diode display manufactured using the same Dec. 31, 2013
8609489 Methods of forming memory; and methods of forming vertical structures Dec. 17, 2013
8609526 Preventing UBM oxidation in bump formation processes Dec. 17, 2013
8598044 Method of fabricating a semiconductor device Dec. 3, 2013
8592946 Lithography for printing constant line width features Nov. 26, 2013
8580623 Thin film transistor substrate and display device including the same, and method for manufacturing thin film transistor substrate Nov. 12, 2013
8575034 Fabricating method of semiconductor element Nov. 5, 2013
8569185 Method of fabricating gate electrode using a treated hard mask Oct. 29, 2013
8563371 Method of forming semiconductor device Oct. 22, 2013
8563433 Process to form via hole in semiconductor wafer Oct. 22, 2013
8557704 Single spacer process for multiplying pitch by a factor greater than two and related intermediate IC structures Oct. 15, 2013
8513132 Method for fabricating metal pattern in semiconductor device Aug. 20, 2013
8507341 Integrated circuit fabrication Aug. 13, 2013
8497190 Process for treating a semiconductor-on-insulator structure Jul. 30, 2013
8492186 Method for producing group III nitride semiconductor layer, group III nitride semiconductor light-emitting device, and lamp Jul. 23, 2013
8481426 Method of forming pattern structure and method of fabricating semiconductor device using the same Jul. 9, 2013
8481381 Superior integrity of high-k metal gate stacks by preserving a resist material above end caps of gate electrode structures Jul. 9, 2013
8420499 Concave-convex pattern forming method and magnetic tunnel junction element forming method Apr. 16, 2013
8420520 Non-cyanide gold electroplating for fine-line gold traces and gold pads Apr. 16, 2013
8415805 Etched wafers and methods of forming the same Apr. 9, 2013
8395191 Semiconductor device and structure Mar. 12, 2013
8372719 Hard mask removal for semiconductor devices Feb. 12, 2013
8336000 Method for determining position of auxiliary pattern, method for manufacturing photomask, and method for manufacturing semiconductor device Dec. 18, 2012
8329512 Patterning method for high density pillar structures Dec. 11, 2012
8324036 Device having and method for forming fins with multiple widths for an integrated circuit Dec. 4, 2012
8324106 Methods for fabricating a photolithographic mask and for fabricating a semiconductor integrated circuit using such a mask Dec. 4, 2012
8309460 Methods of manufacturing semiconductor devices Nov. 13, 2012
8298953 Method for defining a separating structure within a semiconductor device Oct. 30, 2012
8293615 Self-aligned dual depth isolation and method of fabrication Oct. 23, 2012
8288289 Method of fabricating semiconductor device Oct. 16, 2012
8283256 Methods of forming microdevice substrates using double-sided alignment techniques Oct. 9, 2012
8268730 Methods of masking semiconductor device structures Sep. 18, 2012
8269232 TFT LCD array substrate and manufacturing method thereof Sep. 18, 2012
8242021 Method for manufacturing semiconductor device Aug. 14, 2012
8241969 Patterning method for high density pillar structures Aug. 14, 2012
8236689 Method for applying a structure to a semiconductor element Aug. 7, 2012
8237274 Integrated circuit package with redundant micro-bumps Aug. 7, 2012
8198158 Method for thin film memory Jun. 12, 2012
8193018 Patterning method for light-emitting devices Jun. 5, 2012
8159039 Superjunction device having a dielectric termination and methods for manufacturing the device Apr. 17, 2012
8153499 Method for fabrication of a semiconductor device and structure Apr. 10, 2012
8143170 Manufacturing method of semiconductor device Mar. 27, 2012
8120122 Self-aligned masks using multi-temperature phase-change materials Feb. 21, 2012
8110413 Mask pattern verification apparatus, mask pattern verification method and method of fabricating a semiconductor device Feb. 7, 2012
8105866 Method of making PIN-type photo detecting element with a controlled thickness of window semiconductor layer Jan. 31, 2012

1 2 3 4

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