1. A method of simultaneously forming different sized gate conductors on the same substrate, said method comprising:
forming a conductive layer on a substrate;
patterning sacrificial structures above said conductive layer;
forming sidewall spacers adjacent said sacrificial structures using a spacer material capable of undergoing dimensional change;
removing said sacrificial structures in processing that leaves said sidewall spacers in place;
protecting selected ones of said sidewall spacers using a sacrificial mask and leaving others of said sidewall spacers unprotected;
exposing unprotected sidewall spacers to processing that changes the size of said unprotected sidewall spacers, after which said unprotected sidewall spacers have a different size than protected sidewall spacers;
removing said sacrificial mask; and
patterning said conductive layer using said sidewall spacers as a gate conductor mask to simultaneously create differently sized gate conductors on said substrate.
2. The method in claim 1, wherein said process of exposing said sidewall spacers to said processing that changes said size of said unprotected sidewall spacers comprises exposure to light or electron beams, etching, or chemical processing.
3. The method in claim 1, wherein said process of exposing said sidewall spacers to said processing that changes said size of said unprotected sidewall spacers can increase or decrease said size of said unprotected sidewall spacers.
4. The method in claim 1, wherein the size of said gate conductors is controlled by the size of said sidewall spacers, such that gate conductors below said unprotected sidewall spacers will have a different size than gate conductors below said protected sidewall spacers after said process of patterning said conductive layer.
5. The method in claim 1, wherein said process of forming said sidewall spacers comprises:
depositing said spacer material over said sacrificial structures; and
directionally etching said spacer material in processing that removes material from horizontal surfaces faster than from vertical surfaces until said spacer material remains only on the sidewalls of said sacrificial structures.
6. The method in claim 1, wherein said spacer material comprises one of a photosensitive material and a radiation sensitive material.
7. The method in claim 1, wherein said spacer material comprises one of a polysilane material and an organic polymer.
8. A method of simultaneously forming different types of field effect transistors on the same substrate, said method comprising:
forming a conductive layer on a substrate;
patterning sacrificial structures above said conductive layer;
forming sidewall spacers adjacent said sacrificial structures using a spacer material capable of undergoing dimensional change;
removing said sacrificial structures in processing that leaves said sidewall spacers in place;
protecting selected ones of said sidewall spacers using a sacrificial mask and leaving others of said sidewall spacers unprotected;
exposing unprotected sidewall spacers to processing that changes the size of said unprotected sidewall spacers, after which said unprotected sidewall spacers have a different size than protected sidewall spacers;
removing said sacrificial mask;
patterning said conductive layer using said sidewall spacers as a gate conductor mask to simultaneously create differently sized gate conductors on said substrate;
removing said sidewall spacers; and
forming source, drain, and channel regions adjacent said gate conductors.
9. The method in claim 8, wherein said process of exposing said sidewall spacers to said processing that changes said size of said unprotected sidewall spacers comprises exposure to light or electron beams, etching, or chemical processing.
10. The method in claim 8, wherein said process of exposing said sidewall spacers to said processing that changes said size of said unprotected sidewall spacers can increase or decrease said size of said unprotected sidewall spacers.
11. The method in claim 8, wherein the size of said gate conductors is controlled by the size of said sidewall spacers, such that gate conductors below said unprotected sidewall spacers will have a different size than gate conductors below said protected sidewall spacers after said process of patterning said conductive layer.
12. The method in claim 8, wherein said processing of forming said sidewall spacers comprises:
depositing said spacer material over said sacrificial structures; and
directionally etching said spacer material in process that removes material from horizontal surfaces faster than from vertical surfaces until said spacer material remains only on the sidewalls of said sacrificial structures.
13. The method in claim 8, wherein said spacer material comprises one of a photosensitive material and a radiation sensitive material.
14. The method in claim 8, wherein said spacer material comprises one of a polysilane material and an organic polymer.
15. A method of simultaneously forming N-type and P-type field effect transistors (FETs) on the same substrate, said method comprising:
forming a conductive layer on a substrate;
patterning sacrificial structures above said conductive layer;
forming sidewall spacers adjacent said sacrificial structures using a spacer material capable of undergoing dimensional change;
removing said sacrificial structures in processing that leaves said sidewall spacers in place;
protecting selected ones of said sidewall spacers using a sacrificial mask and leaving others of said sidewall spacers unprotected;
exposing unprotected sidewall spacers to processing that changes the size of said unprotected sidewall spacers, after which said unprotected sidewall spacers have a different size than protected sidewall spacers;
removing said sacrificial mask;
patterning said conductive layer using said sidewall spacers as a gate conductor mask to simultaneously create differently sized gate conductors for said N-type FETs when compared to said P-type FETs on said substrate;
removing said sidewall spacers; and
forming source, drain, and channel regions adjacent said gate conductors.
16. The method in claim 15, wherein said process of exposing said sidewall spacers to said processing that changes said size of said unprotected sidewall spacers comprises exposure to light or electron beams, etching, or chemical processing.
17. The method in claim 15, wherein said process of exposing said sidewall spacers to said processing that changes said size of said unprotected sidewall spacers can increase or decrease said size of said unprotected sidewall spacers.
18. The method in claim 15, wherein the size of said gate conductors is controlled by the size of said sidewall spacers, such that gate conductors below said unprotected sidewall spacers will have a different size than gate conductors below said protected sidewall spacers after said process of patterning said conductive layer.
19. The method in claim 15, wherein said spacer material comprises one of a photosensitive material and a radiation sensitive material.
20. The method in claim 15, wherein said spacer material comprises one of a polysilane material and an organic polymer.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A noise suppressing backrest for hunters comprising,
a supple layer of sound-suppressing material in sheet form adapted to be placed against a tree or other backing and rolled or folded into a bundle for storage, said layer having a top and bottom and a pair of laterally spaced apart side edges,
a plurality of vertically spaced apart laterally extending backrest supporting straps secured to the layer of material for attaching the sheet material to the tree or other backing to provide a silencing backrest for the hunter such that contact by the hunter against the layer of material or contact between the backrest and the backing will be less likely to alert game to the presence of the hunter,
one of the straps has a connector secured thereto for being fastened to a safety harness that is worn by the hunter such that the hunter is prevented from falling by the presence of an attachment between the backrest and the backing.
2. The noise suppressing backrest of claim 1 wherein the straps are connected to a back surface of the layer of material such that the hunter does not contact the strap material where the hunter rests against said layer of material.
3. The noise suppressing backrest of claim 1 wherein the layer of material has an opening aligned with a strap such that a strap extends proximate the opening and the connector is secured to the portion of said strap proximate the opening so as to be positioned at least partially on a front side of the layer of material opposite the backing to enable the connector and a strap to be secured to the harness worn by the hunter.
4. The backrest of claim 1 wherein the layer of material has a pocket with a free laterally extending edge defining a pocket opening and one half of a complete zipper is secured to the free edge of the pocket so as to extend laterally of the layer of material,
a second half of said zipper is provided on an opposite surface and the backrest such that the backrest can be folded or rolled into a compact bundle,
the pocket opening faces the bundle which when rolled toward the opening can be inserted into the pocket for storage and
the halves of the zipper are then aligned confronting one another for allowing the zipper to be zipped shut with the bundle enclosed in the pocket.
5. The backrest of claim 4 wherein one of the straps is secured adjacent to the zipper in a location adapted to extend from the pocket when the zipper is zipped shut.
6. The backrest of claim 4 including a waist strap for being placed around the waist of the hunter, said waist strap being positioned adjacent to the pocket in a location adapted to project laterally from the backrest when the zipper is zipped shut such that the backrest can be carried on the waist of the hunter as a fanny pack by said waist strap.
7. The backrest of claim 1 wherein a pocket is provided as a part of the backrest with a pocket opening therein positioned such that the backrest can be rolled or folded into a compact bundle and the bundle then inserted into the pocket through the pocket opening.
8. The backrest of claim 7 wherein the pocket opening has a closure for holding the bundled backrest therein.
9. The combination of claim 1 and at least one hook member connected thereto for supporting a hunting accessory that is to be used by the hunter.
10. The backrest of claim 9 wherein the hook is connected to one of the straps.
11. A noise suppressing backrest for hunters comprising,
a layer of soft, flexible sound-suppressing material in sheet form,
at least one strap or cord attached to the layer of material for securing the backrest to a tree or other backing to provide back support for the hunter such that contact between the hunter and the layer of material will be unlikely to alert game to the presence of the hunter and,
the layer of material has a pocket therein with a free edge,
one half of a complete closure is secured to the free edge of the pocket so as to extend across the layer of material and
a second half of said closure is provided on the backrest in a position that enables the backrest when folded or rolled into a bundle to be inserted into the pocket and the halves of the closure then connected to one another while the bundle is enclosed within the pocket.
12. The backrest of claim 11 wherein the pocket is formed from sound-suppressing material and a waist strap is connected to the backrest in a position to project from the backrest for fastening the backrest to the waist of the hunter when the backrest is enclosed in the pocket.
13. The backrest of claim 11 wherein the layer of material is formed from a fleece fabric.
14. The backrest of claim 11 wherein the pocket and the layer of material are both formed from the same piece of fleece fabric and the pocket comprises a portion of the layer of material at one end thereof, said position being folded adjacent thereto and secured to the material along laterally spaced apart side edges thereof to define said pocket.
15. The backrest of claim 11 wherein the sheet material is selected from the group consisting of fleece, leather, foamed plastic sheet material, non-woven fabric, felt and a laminate composed of at least two layers.
16. The backrest of claim 11 wherein the pocket extends substantially across the entire backrest and has a pocket opening that faces an end of the backrest opposite said pocket.
17. A hunter’s backrest that can be carried on the waist as a fanny pack comprising,
a layer of soft, flexible sheet material that has a first and a second end and a pair of spaced edges extending therebetween,
a pocket located proximate the first end thereof,
the pocket has a lip defining a pocket opening that extends between said edges and the pocket opening faces the second end of the sheet material such that the sheet material can be rolled up and continued rolling up of the material will cause the material to enter the pocket through the pocket opening,
means to attach the sheet material to a tree or other backing and, at least one elongated flexible connecting member attached to the material as a waist strap in a position proximate the pocket to extend around the waist of the hunter for supporting the backrest when held as a compact bundle within the pocket while the backrest is not in use.
18. The backrest of claim 17 wherein the elongated connecting member is a strap that provides a dual function by being positioned to extend from the backrest around the backing to support the backrest during use or around the waist when not in use.
19. The backrest of claim 17 wherein the elongated connecting member passes through the pocket so as to be partially enclosed therein when the backrest is contained in the pocket.
20. The backrest of claim 19 wherein the pocket opening has a closure including cooperating closure members attached to opposite sides of the sheet material in positions to confront one another when the sheet material is placed in the pocket.
21. The backrest of claim 1 wherein the backrest includes a passage for said one strap which comprises a hunter’s safety strap and the hunter’s safety strap is placed to extend through the passage for connecting the hunter’s strap to the backrest.