摘要:
The invention provides a method of fabricating an extremely short-length dual-gate FET, using conventional semi-conductor processing techniques, with extremely small and reproducible fins with a pitch and a width that are both smaller than can be obtained with photolithographic techniques. On a protrusion (2) on a substrate (1), a first layer (3) and a second layer (4) are formed, after which the top surface of the protrusion (2) is exposed. A portion of the first layer (3) is selectively removed relative to the protrusion (2) and the second layer (4), thereby creating a fin (6) and a trench (5). Also a method is presented to form a plurality of fins (6) and trenches (5). The dual-gate FET is created by forming a gate electrode (7) in the trench(es) (5) and a source and drain region. Further a method is presented to fabricate an extremely short-length asymmetric dual-gate FET with two gate electrodes that can be biased separately.
摘要:
The invention provides a method of fabricating an extremely short-length dual-gate FET, using conventional semi-conductor processing techniques, with extremely small and reproducible fins with a pitch and a width that are both smaller than can be obtained with photolithographic techniques. On a protrusion (2) on a substrate (1), a first layer (3) and a second layer (4) are formed, after which the top surface of the protrusion (2) is exposed. A portion of the first layer (3) is selectively removed relative to the protrusion (2) and the second layer (4), thereby creating a fin (6) and a trench (5). Also a method is presented to form a plurality of fins (6) and trenches (5). The dual-gate FET is created by forming a gate electrode (7) in the trench(es) (5) and a source and drain region. Further a method is presented to fabricate an extremely short-length asymmetric dual-gate FET with two gate electrodes that can be biased separately.
摘要:
A method of providing a dielectric material (18) having regions (18′, 18″) with a varying thickness in an IC manufacturing process is disclosed. The method comprises forming a plurality of patterns in respective regions (20′, 20″) of the dielectric material (18), each pattern increasing the susceptibility of the dielectric material (18) to a dielectric material removal step by a predefined amount and exposing the dielectric material (18) to the dielectric material removal step. In an embodiment, the IC comprises a plurality of pixilated elements (12) and a plurality of light interference elements (24), each comprising a first mirror element (16) and a second mirror element (22), a region of the dielectric material (18) separating the first mirror element (16) and the second element (22), and each being arranged over one of said pixilated elements (12), the method further comprising forming the respective first mirror elements (16) in a dielectric layer (14) over a substrate (10) comprising the plurality of pixilated elements; depositing the dielectric material over the dielectric layer; and forming the respective second mirror elements such that each second mirror element is separated from a respective first mirror element by a region of the exposed dielectric material. Hence, an IC having a layer of a dielectric material (18) comprising regions of different thicknesses can be obtained requiring only a few process steps.
摘要:
A method is disclosed of controlling a LED, comprising driving the LED with a DC current for a first time, interrupting the DC current for a second time such that the first time and the second time sum to a period, determining at least one characteristic of the LED while the DC current is interrupted, and controlling the DC current during a subsequent period in dependence on the at least one characteristic. The invention thus benefits from the simplicity of DC operation. By operating at the LED in a DC mode, rather than say in a PWM mode, the requirement to be able to adjust the duty cycle is avoided. By including interruptions to the DC current, it is possible to utilize the LED itself to act as a sensor in order to determine a characteristic of the LED. The need for additional sensors is thereby avoided.
摘要:
A method of manufacturing an I-MOS device includes forming a semiconductor layer (2) on a buried insulating layer (4). A gate structure (23) including a gate stack (14) is formed on the semiconductor layer, and used to (5) self align the formation of a source region (28) by implantation. Then, an etch step is used to selectively etch the gate structure (23) and this is followed by forming a drain region (36) by implantation. The method can precisely control the i-region length (38) between source region (28) and gate stack (14).
摘要:
The present invention relates to a FinFET with separate gates and to a method for fabricating the same. A dielectric gate-separation layer between first and second gate electrodes has an extension in a direction pointing from a first to a second gate layer that is smaller than a lateral extension of the fin between its opposite lateral faces. This structure corresponds with a processing method that starts from a covered basic FinFET structure with a continuous first gate layer, and proceeds to remove parts of the first gate layer and of a first gate-isolation layer through a contact opening to the gate layer. Subsequently, a replacement gate-isolation layer that at the same time forms the gate separation layer fabricated, followed by filling the tunnel with a replacement gate layer and a metal filling.
摘要:
A transistor device is formed of a continuous linear nanostructure having a source region, a drain region and a channel region between the source and drain regions. The source (20) and drain (26) regions are formed of nanowire ania the channel region (24) is in the form of a nanotube. An insulated gate (32) is provided adjacent to the channel region (24) for controlling conduction i ni the channel region between the source and drain regions.
摘要:
A double-gate FinFET and methods for its manufacture are provided. The FinFET includes first and second gates (72, 74) adjacent respective sides of the fin (20), with at least a portion of the first gate facing the fin being formed of polycrystalline silicon, and at least a portion of the second gate facing the fin being formed of a metal suicide compound. The different compositions of the two gates provide different respective work functions to reduce short channel effects.
摘要:
The present invention relates to a manufacturing method of an integrated circuit (IC) comprising a substrate (10) comprising a pixelated element (12) and a light path (38) to the pixelated element (12). The IC comprises a first dielectric layer (14) covering the substrate (10) but not the pixilated element (12), a first metal layer (16) covering a part of the first dielectric layer (14), a second dielectric layer (18) covering a further part of first dielectric layer (14), a second metal layer (20) covering a part of the second dielectric layer (18) and extending over the pixelated element (12) and a part of the first metal layer (16), the first metal layer (16) and the second metal layer (20) forming an air-filled light path (38) to the pixelated element (12). The air-filled light path (38) is formed by creation of holes in the first dielectric layer (14) and the second dielectric layer (18), filling the holes with sacrificial materials, and removal of the sacrificial materials after deposition and patterning of the second metal layer (20). This yields an IC having a low-loss light path to the pixelated element (12). The light path may act as a color filter, e.g. a Fabry-Perot color filter.
摘要:
An active thermal management device and method, in which a phase change material unit, comprising at least one phase change material arranged in series or parallel, is connectable to a source of thermal energy, such as LEDs at a first operating condition. Thermal energy from the source of thermal energy is stored in the phase change material unit. The phase change material unit is connectable to a sink of thermal energy, such as second LEDs at a second operating condition. The thermal energy stored in the phase change material unit may be re-used. The first operating condition can include a 15V supply voltage, and the second operating condition can include either no supply voltage, or a lower 9V supply voltage of 9V, such that heat from the first LEDs, which may be over-temperature, can pre-heat the second LEDs, improving thermal and optical matching.