Industrial Technology Research Institute

United Microelectronics Corp.

Chun-Han Chen

Chung-Ping Chiang

Kun-Ju Li

Chau-Chung Hou

Hsin-Jung Liu

Ang Chan

Yung-Jen Cheng

Yun-Jui Chung

Jiing-Fu Chen

Jhih-Yuan Chen

Ying-Che Weng

Chun-Hsiang Yang

Fu-Shou Tsai

Chung-Che Liu

Wei-Xin Gao

Yu-Lung Shih

I-Ming Lai

Ji-Min Lin

Cheng-Chung Yen

Yung-Lo Chow

Hung-Cheng Yen

Teng-Yuan Wu

Ming-Fa Tsai

Ching-Fu Chen

Fu-Chun Hsiao

Yen-Chieh Wang

Zong-Sian Wu

A method for manufacturing a semiconductor device includes: providing a wafer-bonding stack structure having a sidewall layer and an exposed first component layer; forming a photoresist layer on the first component layer; performing an edge trimming process to at least remove the sidewall layer; and removing the photoresist layer. In this way, contaminant particles generated from the blade during the edge trimming process may fall on the photoresist layer but not fall on the first component layer, so as to protect the first component layer from being contaminated.

Method for manufacturing semiconductor device

An alignment mark structure includes a dielectric layer. A trench is embedded in the dielectric layer. An alignment mark fills up the trench, wherein the alignment mark includes a metal layer covering the trench. A first material layer covers and contacts the metal layer. A second material layer covers and contacts the first material layer. A third material layer covers and contacts the second material layer. The first material layer, the second material layer, and the third material layer independently includes silicon nitride, silicon oxide, tantalum-containing material, aluminum-containing material, titanium-containing material, or a low-k dielectric having a dielectric constant smaller than 2.7, and a reflectance of the first material layer is larger than a reflectance of the second material layer, the reflectance of the second material layer is larger than a reflectance of the third material layer.

Alignment mark structure and method of fabricating the same

The present disclosure relates to a heat dispersion apparatus for motors, which comprises: a cooling fan, and a guide cover. The cooling fan has a plurality of fan blades disposed radially on a back plate, the outside portion of the fan blades axially extend beyond the periphery of the back plate, and the back plate is a cone structure. The guide cover has air inlet, a plurality of holes opened on the surface of the air inlet with slots, the slots arranged in accordance with the rotation direction of the cooling fan, and each slot set up a chamfer for leading into more air to reduce temperature. With this device, airflow supercharging and peripheral axial flow are improved, and the slot structure and the cooling fan blades can introduce a large scale of air; thereby the present invention provides a significant improvement to motors.

Heat dissipation apparatus for motors

A measuring system, during a measurement process thereof, uses a phase-locked loop mechanism of a stator phase voltage and a stator phase current of a three-phase AC motor to effectively remove harmonics and to sense and obtain the amplitude effective values of the phase voltage and the phase current of the three-phase AC motor and the phase difference between the phase voltage and phase current. Therefore, the measuring apparatus is capable of quickly and accurately calculating the input power of the motor without having to measure the parameters of the motor.

Measuring apparatus including phase locked loop and measuring method thereof

The present disclosure relates to a multiple-capacity centrifugal compressor, which includes a plurality of capacity-control mechanisms. Each of the capacity-control mechanisms includes an inlet guide vane and an outlet diffuser, so that the multiple-capacity centrifugal compressor provides a flexible control strategy. In addition, the present disclosure further provides a method for controlling the multiple-capacity centrifugal compressor that effectively adjusts and controls the capacity-control mechanisms by coarsely adjusting the inlet guide vanes and combined with subsequently adjusting the outlet diffusers.

Multiple-capacity centrifugal compressor and control method thereof

A system and method for monitoring and controlling oil return to a compressor, characterized by monitoring and controlling oil level, oil temperature, and compressor outlet pressure, so as to determine whether the oil level is lower than a predetermined level threshold, whether the temperature in the lubricating oil box is lower than a predetermined temperature threshold, and whether the compressor outlet pressure exceeds a predetermined pressure threshold, so as to control the flow of lubricating oil returned to the oil box by controlling the valve opening of the oil return valve according to a non-segmentation principle or a segmentation principle, ensure sufficient lubricating oil in the oil box, and enhance efficiency of the system.

System and method for monitoring and controlling oil return to compressor

A method for predicting surge in a compressor is provided, which is applicable to a cooling apparatus equipped with a centrifugal compressor. A set of highest outlet pressure values is obtained by a performance test performed on the centrifugal compressor. A coolant flow rate value and an opening percentage value of inlet guide vanes of the centrifugal compressor are measured. An outlet pressure value of the centrifugal compressor is calculated with an equation using the measured coolant flow rate value and the measured opening percentage value. The outlet pressure value is compared with one of the highest outlet pressure values corresponding to the measured opening percentage value, and if the outlet pressure value is larger than or equal to the highest corresponding outlet pressure value, it confirms imminent surge in the centrifugal compressor, so as to provide a basis of preparation for surge elimination.

Method for predicting surge in compressor

A rotor mechanism of a centrifugal compressor connectable to a power output device and configured to block leakage of lubricants and to recycle lubricants to an oil sump is provided, which includes a rotary shaft with a rolling bearing and a screw nut, a bearing housing for receiving the rolling bearing, and a bearing plate connected to the bearing housing. The screw nut has a surface provided with an oil throw seal, and the bearing housing. As the bearing plate is provided with an oil channel in contact with the oil-returning hole and either one of the bearing housing and the bearing plate is provided with a first labyrinth seal in contact with the screw nut, lubricants leaking out of the rolling bearing is allowed to go to the oil sump via the oil channel and oil-returning hole. The oil slinger thus blocks the lubricants from leaking out of the first labyrinth seal.

Rotor mechanism of centrifugal compressor

Growing community of inventors

Hsinchu, Taiwan

Chun-Han Chen