Abstract:
Some embodiments include methods of recessing multiple materials to a common depth utilizing etchant comprising C4F6 and C4F3. The recessed materials may be within isolation regions, and the recessing may be utilized to form trenches for receiving gatelines. Some embodiments include structures having an island of semiconductor material laterally surrounded by electrically insulative material. Two gatelines extend across the insulative material and across the island of semiconductor material. One of the gatelines is recessed deeper into the electrically insulative material than the other.
Abstract translation:一些实施方案包括使用包含C 4 F 6和C 4 F 3的蚀刻剂将多种材料凹入共同深度的方法。 凹陷的材料可以在隔离区域内,并且凹陷可以用于形成用于接收基准线的沟槽。 一些实施例包括具有由电绝缘材料横向包围的半导体材料岛的结构。 两种栅极延伸穿过绝缘材料和半导体材料岛。 电绝缘材料中的一种比另一种更凹陷。
Abstract:
Fin-FET (fin field effect transistor) devices and methods of fabrication are disclosed. The Fin-FET devices include dual fin structures that may form a channel region between a source region and a drain region. In some embodiments, the dual fin structures are formed by forming shallow trench isolation structures, using a pair of shallow trench isolation (STI) structures as a mask to define a recess in a portion of the substrate between the pair of STI structures, and recessing the STI structures so that the resulting dual fin structure protrudes from an active surface of the substrate. The dual fin structure may be used to form single-gate, double-gate or triple-gate fin-FET devices. Electronic systems including such fin-FET devices are also disclosed.
Abstract:
A method of forming emitter tips for use in a field emission array is disclosed. The tips are formed by utilizing a polymer residue that forms during the dry etch sharpening step to hold the mask caps in place on the emitter tips. The residue polymer continues to support the mask caps as the tips are over-etched, enabling the tips to be etched past sharp without losing their shape and sharpness. The dry etch utilizes an etchant comprised of fluorine and chlorine gases. The mask caps and residue polymer are easily removed after etching by washing the wafers in a wash of deionized water, or Buffered Oxide Etch.
Abstract:
A method of forming a pattern in a layer of material on a substrate, comprising providing a plurality of spheres, covering the layer on the substrate with the plurality of spheres to form a mask, reducing the diameter of at least one sphere of the plurality of spheres, etching the layer on the substrate using at least one sphere having a reduced diameter as a mask, and etching the substrate.
Abstract:
A method of forming emitter tips for use in a field emission array is disclosed. The tips are formed by utilizing a polymer residue that forms during the dry etch sharpening step to hold the mask caps in place on the emitter tips. The residue polymer continues to support the mask caps as the tips are over-etched, enabling the tips to be etched past sharp without losing their shape and sharpness. The dry etch utilizes an etchant comprised of fluorine and chlorine gases. The mask caps and residue polymer are easily removed after etching by washing the wafers in a wash of deionized water, or Buffered Oxide Etch.
Abstract:
A carbon containing masking layer is patterned to include a plurality of container openings therein having minimum feature dimensions of less than or equal to 0.20 micron. The container openings respectively have at least three peripheral corner areas which are each rounded. The container forming layer is plasma etched through the masking layer openings. In one implementation, such plasma etching uses conditions effective to both a) etch the masking layer to modify shape of the masking layer openings by at least reducing degree of roundness of the at least three corners in the masking layer, and b) form container openings in the container forming layer of the modified shapes. Capacitors comprising container shapes are formed using the container openings in the container forming layer. Other implementations and aspects are disclosed.
Abstract:
Fin-FET (fin field-effect transistor) devices and methods of fabrication are disclosed. The fin-FET devices include dual fin structures that may form a channel region between a source region and a drain region. In some embodiments, the dual fin structures are formed by forming shallow trench isolation structures, using a pair of shallow trench isolation (STI) structures as a mask to define a recess in a portion of a substrate between the pair of STI structures, and recessing the pair of STI structures so that the resulting dual fin structures protrude from an active surface of the substrate. The dual fin structures may be used to form single-gate, double-gate, or triple-gate fin-FET devices. Electronic systems including such fin-FET devices are also disclosed.
Abstract:
Apparatus, systems and methods for plasma etching substrates are provided that achieve dissipation of charge build-up on a substrate being plasma etched to avoid notching or twisting in high aspect ratio contents and similar features. Charge build-up on a substrate being etched by plasma etching can be dissipated by a method for etching a substrate, the method comprising: providing a plasma processing chamber comprising a chamber enclosure and a substrate support adapted to support a substrate within the chamber enclosure; supporting a substrate on the substrate support; forming a plasma within the chamber enclosure such that a surface of the substrate is in contact with the plasma; etching the substrate by generating a negative bias on the substrate surface relative to the plasma; and intermittently changing the bias on the substrate surface to positive relative to the plasma. The present method can be integrated into known plasma processing systems.
Abstract:
Fin-FET (fin field effect transistor) devices and methods of fabrication are disclosed. The Fin-FET devices include dual fin structures that may form a channel region between a source region and a drain region. In some embodiments, the dual fin structures are formed by forming shallow trench isolation structures, using a pair of shallow trench isolation (STI) structures as a mask to define a recess in a portion of the substrate between the pair of STI structures, and recessing the pair of STI structures so that the resulting dual fin structure protrudes from an active surface of the substrate. The dual fin structure may be used to form single-gate, double-gate, or triple-gate fin-FET devices. Electronic systems including such fin-FET devices are also disclosed.
Abstract:
Some embodiments include methods of recessing multiple materials to a common depth utilizing etchant comprising C4F6 and C4F3. The recessed materials may be within isolation regions, and the recessing may be utilized to form trenches for receiving gatelines. Some embodiments include structures having an island of semiconductor material laterally surrounded by electrically insulative material. Two gatelines extend across the insulative material and across the island of semiconductor material. One of the gatelines is recessed deeper into the electrically insulative material than the other.