Hyundai Motor Company

Kia Corporation

Kia Motors Corporation

Yonsei University

Il Seon Yoo

Dong Gu Kim

Dae Sung Kwon

Hyun Soo Kim

Jang Hyeon Lee

Woo Young Lee

Soo Min Lee

Sang Hyeok Yang

Soon Myung Kwon

Se Young Park

Hyun Sook Lee

Tae Ho Jeong

Jin Kyo Jeong

Hi Won Lee

Hae Won Yoon

A tactile ultrasonic device and a method of processing a user input by using the same. The tactile ultrasonic device may include a plurality of ultrasonic elements including a first ultrasonic element and a second ultrasonic element, which are placed such that beam axes are not parallel to each other. The tactile ultrasonic device may also include a processor that controls vibrations of the ultrasonic elements. A first focus of the first ultrasonic element and a second focus of the second ultrasonic element may be formed within a specific range of a tactile sensing area.

Tactile ultrasonic device and method for processing a user input using the same

An apparatus for providing haptic stimulation includes an ultrasonic actuator configured to provide haptic stimulation to a part of a body located at a target location by generating an ultrasonic signal, and forming sound pressure at the target location via the generated ultrasonic signal; an object sensor provided around the ultrasonic actuator and configured to detect an object within a region between the ultrasonic actuator and the target location; and a control module configured to stop operation of the ultrasonic actuator based on detecting the object within the region is sensed.

Apparatus and method of providing haptic stimulation

A hydrogen sensor includes a substrate, an insulating part formed on the substrate and provided with a plurality of holes, a first catalyst part formed on an upper end of the insulating part to accelerate the reaction between hydrogen and oxygen, a second catalyst part formed on a surface of the holes to accelerate the reaction between hydrogen and oxygen, and a heater part disposed inside the insulating part to heat the first catalyst part and the second catalyst part, and having an temperature increased by reaction heat generated by the reaction between hydrogen and oxygen.

Hydrogen sensor and method for manufacturing the same

An embodiment contact combustion type hydrogen sensor includes a substrate including silicon, lamination layers disposed over a top surface of the substrate and including a first thin oxide layer and a first thin nitride layer, a heater over the lamination layers, the heater including a connecting part electrically connected to a predetermined part and a heating part configured to be heated in response to power being applied, insulating layers covering a top surface of the heater and configured to perform an insulating operation, the insulating layers including a second thin oxide layer and a second thin nitride layer, a platinum catalyst over the insulating layers and configured to be heated by the heater to perform a hydrogen reaction, and a slit outside the heating part and passing through the substrate and the lamination layers.

Contact combustion type hydrogen sensor and method for manufacturing same

An energy harvester includes an electrode part including a plurality of partition walls spaced apart from one another in a horizontal direction, and spaces defined between the plurality of partition walls, and a cantilever part including a cantilever member having at least a partial region provided in the space defined in the electrode part, the cantilever member includes a plurality of cantilever members, each of the plurality of cantilever members having a first end and a second end, wherein the first end is positioned in the space defined in the electrode part, and wherein the second end is fixedly coupled to a housing, and in which a natural frequency of at least one of the plurality of cantilever members is different from a natural frequency of each of the remaining cantilever members.

Energy harvester

Disclosed herein is a method for manufacturing a hydrogen sensor, the method comprising the steps of: disposing a thin film made of a transition metal or an alloy thereof on a surface of elastic substrate; applying a tensile force in a repetitive manner to the elastic substrate to form a nanocrack on the thin film disposed on the surface of the elastic substrate; and injecting hydrogen gas into the formed nanocrack and then removing the hydrogen gas to form a nanogap, wherein the tensile force in the step of forming a nanocrack is applied to an extent that the elastic substrate has a tensile strain of 25% to 100%.

Hydrogen sensor and hydrogen sensor manufacturing method

A convertible seat for a vehicle includes a base frame having a predetermined dimension of storage space, a plurality of individual blocks disposed to be ascendable and descendable in the storage space of the base frame and configured to serve as a seatback and a seat cushion, and a raising and lowering drive device installed in each of the individual blocks and configured to raise or lower a corresponding one of the individual blocks so that a seat position can be changed into various forms.

Convertible seat for vehicle

A MEMS microphone and a manufacturing method thereof are provided. The MEMS microphone includes: a substrate configured to have a through portion formed in a central portion thereof; a vibration membrane configured to have an uneven structure formed on the through portion of the substrate; and a fixed membrane provided on an upper position spaced apart from the vibration membrane by a predetermined distance.

MEMS microphone and method of manufacturing the same

A microphone includes a substrate having a first sound hole formed therein, a sound-sensing module mounted on the substrate so as to be aligned with the first sound hole, a signal-processing chip mounted on the substrate so as to be electrically connected to the sound-sensing module, a cover mounted on the substrate so as to accommodate the sound-sensing module therein and including a filter accommodation portion having a second sound hole formed therein, and a sound delay filter elastically accommodated in the filter accommodation portion so as to be aligned with the second sound hole. The microphone has a simplified structure, and can be manufactured to as to improve the stability and reliability thereof.

Microphone and manufacturing method thereof

An energy harvester is provided. The energy harvester includes a housing, a permanent magnet that is disposed within the housing, and a mass body that has a relative position to the permanent magnet changed by a translational motion within the housing by vibration energy from the exterior and that is formed of a magnetic substance. Further, a piezoelectric body generates electricity while elastically supporting vibration with respect to the housing of the permanent magnet by the translational motion of the mass body and an induction coil is disposed within the housing to generate induction electricity based on the vibration of the permanent magnet.

A MEMS sensor and a manufacturing method thereof is provided: forming a lower electrode layer wherein a metal is deposited on a portion of a lower glass substrate; forming a structural layer by etching according to a pattern which is formed on an upper surface of a silicon wafer and then further etching to the same thickness as the metal which is formed on a portion of the lower electrode layer; anodic bonding the structural layer to an upper portion of the lower electrode layer formed; forming a sensing part in the structural layer by etching according to a pattern which is formed on an opposite surface of the structural layer which is not etched; and forming an upper electrode layer by depositing a metal on an upper wafer and eutectic bonding the upper electrode layer to the structural layer on which the sensing part is formed.

Growing community of inventors

Seoul, South Korea

Il Seon Yoo