Abstract:
A critical dimension compensating method of a deep trench etching process includes: obtaining an etching critical dimension difference; compensating an masking layer layout for wafer etching according to a distance between an etching position and the center position of the wafer, and the etching critical dimension difference; and performing a deep trench etching to the wafer according to the compensated masking layer layout. The dimension of the etching patterns of the masking layer layout is compensated by using half of the critical dimension difference as the compensation value, such that the etch rate difference and the etching dimension difference caused by uneven distribution of the critical dimension at different wafer locations during the deep trench etching process are improved, thus greatly improving the uniformity of the critical dimension of the deep trench etching structure.
Abstract:
A pressure sensor (10) comprising: a detection film (200) which is arranged on a silicon substrate (100) and is used for detecting a pressure which is applied to the surface of the detection film and generating a bulge deformation which adapts to the size of the pressure; an optical transmitter (300) and an optical detector (400) which are arranged on the silicon substrate (100), are located on a plane which is parallel to a plane where the detection film (200) is located, and are oppositely arranged at two sides of the detection film (200); and a pressure calculation module which is connected to the optical detector (400) and is used for acquiring detected light intensity data, and calculating a pressure value according to the light intensity data.
Abstract:
A method for manufacturing a film support beam includes: providing a substrate having opposed first and second surfaces; coating a sacrificial layer on the first surface of the substrate, and patterning the sacrificial layer; depositing a dielectric film on the sacrificial layer to form a dielectric film layer, and depositing a metal film on the dielectric film layer to form a metal film layer; patterning the metal film layer, and dividing a patterned area of the metal film layer into a metal film pattern of a support beam portion and a metal film pattern of a non-support beam portion, wherein a width of the metal film pattern of the support beam portion is greater than a width of a final support beam pattern, and a width of the metal film pattern of the non-support beam portion is equal to a width of a width of a final non-support beam pattern at the moment; photoetching and etching on the metal film layer and the dielectric film layer to obtain the final support beam pattern, the final non-support beam pattern and a final dielectric film layer, wherein the final dielectric film layer serves as a support film of the final support beam pattern and the final non-support beam pattern; and removing the sacrificial layer.
Abstract:
A lateral double diffused metal oxide semiconductor field-effect transistor, comprising: semiconductor substrates (400, 500), body regions (401, 501) positioned in the semiconductor substrates, drift regions (404, 504) positioned in the semiconductor substrates (400, 500), source regions (405, 505) and a body leading-out region (402) which are positioned in the body regions (401, 501) and spaced from the drift regions (404, 504), a field region (508) and drain regions (406, 506) which are positioned in the drift regions (404, 504), and gates (407, 507) positioned on the surfaces of the semiconductor substrates (400, 500) to partially cover the body regions (401, 501), the drift regions (404, 504) and the field region (508), wherein the field region (508) is of a finger-like structure and comprises a plurality of strip field regions which extend from the source regions (405, 505) to the drain regions (406, 506) and are isolated by the active regions; and the strip field regions provided with strip gate extending regions extending from the gates (407, 507). The lateral double diffused metal oxide semiconductor field-effect transistor, with the strip gates on the strip field regions to deplete the whole drift regions (404, 504), can realize relatively high off-state breakdown voltage; and the impurity concentration of the whole drift regions (404, 504) is improved in the presence of a plurality of active regions, so that the turn-on resistance is reduced.
Abstract:
A sensor control circuit comprises a sensor (201), a filtering circuit (202), a buffering circuit (203), and an amplifying circuit (204). An output end of the sensor (201) is connected to an input end of the filtering circuit (202), an output end of the filtering circuit (202) is connected to an input end of the buffering circuit (203), and an output end of the buffering circuit (203) is connected to an input end of the amplifying circuit (204). Because the buffering circuit (203) is disposed between the filtering circuit (202) and the amplifying circuit (204), the sensor circuit has an advantage of full sampling. Further provided is an electronic apparatus using the sensor control circuit.