公开(公告)号：US20220095479A1

公开(公告)日：2022-03-24

申请号：US17217972

申请日：2021-03-30

Applicant: LG ELECTRONICS INC.

Inventor： Jongwon KIM ,  Yeojun Yoon

IPC: H05K7/20 ,  H01L51/52

Abstract: A display device is disclosed. The display device includes a display panel, a frame positioned behind the display panel, a PCB coupled to the frame and including a heating element, and a vapor chamber including an internal space for fluid to flow, wherein the vapor chamber includes a heat-absorbing part in contact with the heating element, a heat-releasing part positioned above the heat-absorbing part and spaced apart from the PCB, and a plurality of lines formed at an outer side of the vapor chamber, wherein the plurality of lines extend in a first direction corresponding to an axis that connects a center of the heat-absorbing part to a center of the heat-releasing part.

公开(公告)号：US20210161000A1

公开(公告)日：2021-05-27

申请号：US17041113

申请日：2019-05-13

Applicant: LG ELECTRONICS INC.

Inventor： Jongwon KIM ,  Yeojun YOON

IPC: H05K1/02 ,  H05K9/00 ,  H05K7/20

Abstract: The present disclosure relates to a substrate structure, including a substrate including at least one electronic device, a first SMD gasket configured to remove an electromagnetic wave formed on the substrate and radiated from the substrate, a second SMD gasket configured to remove an electromagnetic wave formed on the substrate and radiated from the substrate, and a cover shield installed on a surface confronting the substrate to externally discharge heat within the installed region. Here, if a frequency generated from the electronic device is a specific frequency, a spaced distance between the first SMD gasket and the second SMD gasket is set to a length different from a prescribed magnification of a wavelength corresponding to the specific frequency.

公开(公告)号：US20180026486A1

公开(公告)日：2018-01-25

申请号：US15547174

申请日：2016-01-28

Applicant: LG ELECTRONICS INC.

Inventor： Changhum JO ,  Kyunghoon LEE ,  Kwangyong JANG ,  Jongwon KIM

IPC: H02K1/27 ,  A47L9/22 ,  H02K1/28

CPC classification number: H02K1/278 ,  A47L9/22 ,  H02K1/28

Abstract: A brushless direct current (BLDC) motor is disclosed. The BLDC motor includes a shaft made of a nonmagnetic material, a plurality of magnets surrounding the outer circumference of the shaft, a stator surrounding the outer circumferences of the magnets, wherein each of the magnets has an arc-shaped outer circumferential surface, an arc-shaped inner circumferential surface facing the shaft, and opposite side surfaces facing other adjacent magnets, and the magnets include a first magnet magnetized in a direction directed from the outer circumferential surface to the inner circumferential surface, a second magnet magnetized in a direction directed from the inner circumferential surface to the outer circumferential surface, and a third magnet magnetized in a direction directed from one side surface to the other side surface. The efficiency of the motor is improved while eddy current loss is minimized.

公开(公告)号：US20180289229A1

公开(公告)日：2018-10-11

申请号：US15766701

申请日：2016-10-07

Applicant: LG Electronics Inc. ,  Seoul National University R&DB Foundation

Inventor： Jongwon KIM ,  Jungdae LEE ,  Myungkeun YOO ,  Junho AHN ,  Jungik HA ,  Sungho JUNG ,  Jaeyong PARK

IPC: A47L9/28 ,  H02P21/14 ,  H02P27/06

Abstract: The present invention relates to a motor driving apparatus and a home appliance comprising the same. The motor driving apparatus according to an embodiment of the present invention comprises: an inverter which converts a direct current power source of a DC stage capacitor to an alternating current power source and outputs the converted alternating power source to a motor by a switching operation; a DC stage resistance device arranged between the DC stage capacitor and the inverter; and a control unit which controls the inverter on the basis of phase current sampled by means of the DC stage resistance device, wherein the control unit controls the frequency of voltage applied to the motor or the rotation frequency of the motor to be synchronized with the sampling frequency of the phase current sampled via the DC stage resistance device. Accordingly, it is possible to accurately calculate the phase current flowing through the motor by means of the DC stage resistance device.

公开(公告)号：US20160181894A1

公开(公告)日：2016-06-23

申请号：US14978844

申请日：2015-12-22

Applicant: LG ELECTRONICS INC.

Inventor： Jundae LEE ,  Jongwon KIM ,  Kyunghoon LEE

IPC: H02K11/33 ,  H02K11/02 ,  H05K1/18 ,  H05K1/09 ,  H05K1/11 ,  H02K11/25 ,  H05K7/20

Abstract: Embodiments provide a printed circuit board including a copper foil layer to form a circuit pattern on a base layer, and an insulation layer laminated on the copper foil layer, and wherein the circuit pattern includes a solder pattern, to which an inverter switch element is soldered to supply drive power to a motor, a heat radiation pattern spaced apart from the solder pattern and to contact with one surface of the inverter switch element so as to absorb and radiate heat in the inverter switch element, a heat circulation pattern, through which the heat absorbed by the heat radiation pattern is circulated, and an element pattern formed on both sides of the heat circulation pattern to allow a thermistor element, a resistance value of which is varied according to the heat, to be soldered to the element pattern.

Abstract translation: 实施例提供了一种印刷电路板，其包括在基底层上形成电路图案的铜箔层和层压在铜箔层上的绝缘层，并且其中电路图案包括焊接图案，逆变器开关元件被焊接到该焊料图案 向马达提供驱动力，与焊料图形间隔开的散热图案，并与逆变器开关元件的一个表面接触，以便吸收和辐射逆变器开关元件中的热量，热循环图案 由热辐射图形吸收的热量循环，并且形成在热循环图案两侧的元件图案，以允许热敏电阻元件（其电阻值根据热量而变化）被焊接到元件图案。