Lg Electronics Inc.

Lg Innotek Co., Ltd.

Young Joo Yee

Jong Uk Bu

Jun Ho Jang

Cheol Soo Park

Hyouk Chon Kwon

In Kyu Kim

Ki Chang Song

Chang Hyeon Ji

Chi Hwan Jeong

Heon Min Lee

Seong Hyok Kim

Jeong Hoon Choi

Jung Hoon Choi

Byeong Hwa Chung

The apparatus for transmitting and receiving sound is disclosed, wherein a directional microphone for detecting sound for transmission is applied and a sound output unit for outputting the received sound is arranged at a side of the directional microphone where sensitivity is low, thereby preventing sound coupling for received sound and sound for transmission without recourse to complicated signal processing to attenuate the echo and howling.

Apparatus for transmitting and receiving sound

A backlight unit including a substrate disposed thereon with conductive lines, a plurality of light emitting diodes each bonded to an upper surface of the substrate and spaced a predetermined distance apart from the substrate, and electrically connected to the conductive lines of the substrate; a transparent resin encompassing the plurality of light emitting diodes and formed on the upper surface of the substrate, and an optical transmission arrangement disposed on an upper surface of the transparent resin. Further, the arrangement includes a first layer for preventing light emitted from the light emitting diodes from being totally reflected by allowing an incident angle of the light to be less than a threshold angle, and a second layer for diffusing and emitting the light.

Backlight unit having light emitting diodes and method for manufacturing the same

A micro-actuator, its manufacturing method, an optical pickup head of an optical recording/reproducing apparatus having the micro-actuator, and its manufacturing method are disclosed. A low voltage and low power bi-directional driving is accomplished so that a size and a weight of a system can be considerably reduced and a response speed can be improved. A uniformity and a production efficiency are heightened by reducing a alignment tolerance. In addition, a configuration tolerance caused due to an uneven thickness of a protection layer of the record layer on the disk and an uneven smoothness of the disk is corrected, so that a focal point of an objective lens can be optimally made on a record layer of the disk.

Micro-actuator, manufacturing method thereof, optical pickup head of optical recording/reproducing apparatus with micro-actuator and manufacturing method thereof

Disclosed are an optical recording reproducing apparatus which can effectively remove contamination material attached thereto and an optical recording medium used in the optical recording reproducing apparatus. To this end, the apparatus comprises: a catalyst layer formed at a specific part thereof; and a light irradiation unit for irradiating light on the catalyst layer. An optical disc used in an optical recording reproducing apparatus includes a catalyst layer.

Optical recording reproducing apparatus and optical recording medium used therein

A flow control valve apparatus, a manufacturing method thereof and a heat exchanger using the same. The flow control valve apparatus includes: a flow channel having a longitudinal axis comprised of an upper flow channel and a lower flow channel, for guiding a fluid; sealing means installed in a plane perpendicular to the flow channel and having an orifice through which the fluid passes; opening/closing means for controlling opening/closing of the orifice; and applying means installed along an outer circumference of the flow channel and to which a current may be applied for controlling the opening/closing of the orifice. According to the inventive flow control valve apparatus, the displacement of the permanent magnet valve member is varied using the current applied to the solenoid coil, thereby linearly controlling the opened area of the orifice and/or performing the opening/closing operation of the orifice. The valve apparatus can be miniaturized at a low price. By applying the valve apparatus to a heat exchanger, its cooling efficiency can be controlled easily.

Valve apparatus for controlling mass flow, manufacturing method thereof and heat exchanger using the same

A flow control valve apparatus using a flow control valve manufactured via micro-machining is provided. The flow control valve has a substrate defining at least one orifice through which a fluid can flow, a support member formed on a first surface of the substrate, at least one flap corresponding to the at least one orifice, a pair of elastic flexures connecting the support member to the at least one flap, and a driving means for displacing the at least one flap between the first and second positions to control fluid flow through the at least one orifice. The support member is formed adjacent to the at least one orifice and the at least one flap extends from the support member to fittingly engage the at least one orifice in a first and second position. Also, the pair of elastic flexures provides an elastic restorative force proportional to a displacement of the at least one flap between the first and second positions.

Flow control valve and flow control valve apparatus using the same

An electromagnetic control valve having a permanent magnet and a needle are fitted in a cylindrical valve body, and a coil, and first and second yokes are mounted on an outside circumferential surface of the valve body. There are first and second ports in the valve body for making an outside space and an inside space of the valve body in communication. There is an orifice in the valve body for making the first and the second ports in communication. The needle is disposed at a position opposite to a side of the orifice, for moving in an up/down direction when a current is applied to the coil. Direction and amount of movement of the needle are dependent on a direction and an intensity of the current applied to the coil. When the needle moves, a tip of the needle varies an opened area of the orifice linearly, according to which a flow rate of the fluid passed through the orifice is controlled according to a position of the needle.

Electromagnetic control valve

Disclosed are a light emitting module, an optical detecting module, an optical pickup apparatus formed by coupling the ultra-minimized light emitting module and the optical detecting module, and manufacturing methods thereof. To this end, ultra-minimization, a micro machining technique fit to a mass production, and a semiconductor device assembly manufacturing process are applied, thereby reducing a component cost and increasing uniformity of components.

Light emitting module, optical detecting module, optical pickup apparatus and manufacturing methods thereof

A thin film bulk acoustic resonator device is provided for minimizing phase noise by controlling resonance frequency. The thin film bulk acoustic resonator device comprises: a fixed body having a first electrode; a driving body having a second electrode installed to be adjacent to the fixed body and moved toward the fixed body due to voltage applied to the first and second electrodes; and a thin film bulk acoustic resonator for controlling the resonance frequency according to change of stress generated due to the movement of the driving body.

Thin film bulk acoustic resonator for controlling resonance frequency and voltage controlled oscillator using the same

Device and method for removing contaminant particles from an optical disk, the optical disk having an optical disk substrate, a reflective layer on the disk substrate, a first insulating layer on the reflective layer, a recording layer on the first insulating layer for recording/reproducing a data thereon/therefrom, and a second insulating layer on the recording layer, the device including an electrode pattern of a plurality of concentric circles on the optical disk except the recording layer, a third insulating layer on the electrode pattern to expose a region of the electrode pattern, and a number of connection electrodes in contact with the exposed electrode pattern for applying dust collecting voltages to the electrode pattern.

Device and method for removing contaminant particle from optical disk

High density near field optical recording/reproducing device, including a light source for emitting a bean of light, a converging lens for converging the light emitted from the light source, and a near filed light generating part formed of a material of which light transmittance is varied with light temperature sectors, thereby overcoming a limit of resolution coming from diffraction, whereby increasing a recording density, significantly.

Near field optical recording/reproducing device

Light source module with two wavelengths including a first and a second laser diodes each for emitting a laser beam with a wavelength different from each other, and a submount formed between the first and second laser diodes having a vertical mirror surface vertical to bonding surfaces of the first and second laser diodes for reflecting laser beams from the first and second laser diodes in a same direction.

Growing community of inventors

Gyeonggi-do, South Korea

Young Joo Yee