Samsung Electronics Co., Ltd.

Kpx Chemical Co., Ltd.

U4mtech

Moonyoung Kim

Jeongil Kang

Shinwook Choi

Taeyoung Kim

Jaesung Lee

Hoon Hee Han

Yunseok Choi

Keonwoo Kim

Jinhye Bae

Hyojin Yun

Seungwon Kim

Woojung Park

Mintae Lee

Hyunseop Shin

Moonchang Kim

Cheolmo Yang

Eunsun Kim

Jaeneung Lee

Chul-Yong Cho

Hyeonseung Lee

Ji-Yeon Yoo

Jaeeun Kim

Wonmyung Woo

Iseul Song

Soonsuk Seo

Jaehee Moon

Shinho Kang

Sangho Cho

Sinwook Choi

Jinhyung Lee

An electronic apparatus includes: a converter including a switching device, an inductor, and an output capacitor; a protection switching device provided between the inductor and the output capacitor; and a protection circuit configured to provide a control voltage to: turn on the protection switching device based on a first voltage applied between the inductor and the protection switching device, the first voltage being lower than or equal to a threshold level corresponding overvoltage, and turn off the protection switching device based on the first voltage, the first voltage being higher than the threshold level. The control voltage is varied depending on variation in the input voltage or the output voltage and having a level corresponding to a threshold voltage for turning on or off the protection switching device.

Electronic apparatus

A photoresist-removing composition includes a polar organic solvent, an alkyl ammonium hydroxide, an aliphatic amine not including a hydroxy group, and a monovalent alcohol. To manufacture a semiconductor device, a photoresist pattern may be formed on a substrate, and the photoresist-removing composition may then be applied to the photoresist pattern. To manufacture a semiconductor package, a photoresist pattern including a plurality of via holes may be formed on a substrate. A plurality of conductive posts including a metal may be formed inside the plurality of via holes, and the photoresist pattern may be removed by applying a photoresist-removing composition of the inventive concept to the photoresist pattern. A semiconductor chip may be adhered to the substrate between the respective conductive posts.

Compositions for removing photoresists and methods of manufacturing semiconductor devices and semiconductor packages using the compositions

A display device includes: a display panel; a chassis assembly accommodating the display panel; a rear cover surrounding at least a portion of the chassis assembly; and a control assembly provided between the chassis assembly and the rear cover and, wherein the control assembly includes: a single-side printed circuit board (PCB) including a circuit surface with a circuit pattern printed thereon, and an insulating surface, a circuit module provided on the circuit surface, and a jumper connector including a first protruding portion passing through a first hole of the single-side PCB, a second protruding portion passing through a second hole of the single-side PCB.

Display device with slim control assembly

A display apparatus is disclosed. The display apparatus includes: a backlight; a main circuit; a power supply configured to output a first power to drive the backlight and a second power to drive the main circuit; a first battery configured to be charged by the first power and supply power to the backlight; a second battery which is connected to the first battery in series, and configured to be charged by the first power and supply power to the backlight and the main circuit; and a control circuit configured to control the first battery and the second battery to be charged with the first power for a first time period, and drive the backlight with first battery power of the first battery and second battery power of the second battery for a second time period.

Display apparatus and control method thereof

A display apparatus includes a body; a display provided in the body; a processor provided in the body and configured to control the display to display an image; and a power supply including an adapter configured to be detachable from the body, and a power assembly configured to receive power from the adapter in a non-contact manner and supply the power to at least one of the display and the processor.

Display apparatus

A display apparatus includes: a display, a processor configured to process image data to be displayed on the display, a transformer including a primary coil and a plurality of secondary coils, a first rectifier connected with a first coil of the plurality of secondary coils and configured to output a first output voltage corresponding to a number of turns of the first coil, a direct current-direct current (DC-DC) converter configured to receive the first output voltage from the first rectifier and output a second output voltage that is different from the first output voltage, and a second rectifier connected with a second coil of the plurality of secondary coils and configured to output a first load voltage which is a sum of the second output voltage and a third output voltage corresponding to a number of turns of the second coil to the display.

Display apparatus and power supply thereof

A display device includes a diode bridge configured to rectify input power; a power factor correction (PFC) circuit configured to control a power factor of the input power rectified by the diode bridge; a direct current (DC)/DC converter configured to change voltage of the input power received through the PFC circuit; and a PFC controller connected to the diode bridge and configured to selectively turn on or off the PFC circuit based on terminal voltages of lower diodes included in the diode bridge.

Display device and method for controlling display device

An electronic apparatus includes: a plurality of input ports to which a plurality of first external devices are connected; a converter; an output port to which a second external device is connected; and a processor that controls the converter to convert a plurality of input voltages of the plurality of first external devices connected to the plurality of input ports into an output voltage, identifies whether power is capable of being supplied by each of the input voltages, and controls the converter to output the converted output voltage to the second external device to the output port, based on whether the power is capable of being supplied.

Electronic apparatus for supplying power to an external device connected to an output port from multiple input ports and control method thereof

Provided are a levitating display device and an operating method thereof. The display device includes a frame unit and a panel unit, wherein the frame unit includes a power receiver and a wireless power transmitter configured to wirelessly transmit power received by the power receiver to the panel unit, and the panel unit includes a wireless power receiver configured to wirelessly receive the power from the wireless power transmitter and a display configured to receive the power from the wireless power receiver and display an image.

Levitating display device

An electronic apparatus includes: an operator; and a power circuit configured to supply power to the operator, wherein the power circuit includes a first voltage converter configured to output a first voltage based on input power, and a power factor corrector (PFC) configured to output a second voltage by performing power factor correction for the first voltage, and supplies power based on the first voltage or the second voltage to the operator, wherein the power circuit stops an operation of the PFC, lowers the first voltage to have a level corresponding to the second voltage, and supplies power based on the lowered first voltage to the operator, based on power consumption of the operator lower than or equal to a predetermined value.

Electronic apparatus including operator and power circuit configured to supply power to the operator

An electronic apparatus is disclosed. The electronic apparatus includes: a power interface comprising circuitry connected with a display apparatus, a first converter comprising circuitry configured to convert an external power to a first driving power based on a first ground, a second converter comprising circuitry configured to convert the external power to a second driving power, based on a second ground, the second driving power having a voltage level lower than a voltage level of the first driving power, and a switch having a first end connected to an output end of the first converter, and the switch is connected to a power interface by one of the first end and a second end, wherein the switch is configured to be switched to supply one of the first driving power and the second driving power to the display apparatus through the power interface based on an operating state of the display apparatus.

Electronic apparatus transmitting power to a display apparatus, control method thereof and display apparatus receiving power

Disclosed is an LED driving apparatus. The LED driving apparatus comprises an LED driving circuit, a power supply unit for supplying a driving voltage to the LED driving circuit, a voltage ripple controller located between the LED driving circuit and the power supply unit, and a switching unit for controlling a voltage supplied to the LED driving circuit by turning on or off the voltage ripple controller according to a duty ratio of a pulse width modulation (PWM) dimming signal.

LED driving apparatus and control method thereof

Disclosed is an overvoltage protection circuit and method thereof. The overvoltage protection circuit includes a charge/discharge circuit configured to be charged or discharged based on a source voltage of a first transistor included in a non-isolated converter and a comparison circuit, based on a voltage charged in the charge/discharge circuit exceeding a threshold voltage, turn off a power supply circuit supplying power to the non-isolated converter.

Overvoltage protection circuit and operation method thereof

An electronic apparatus is disclosed. The electronic apparatus includes: a first power factor correction (PFC) unit comprising circuitry and a second PFC unit comprising circuitry connected to the first PFC unit, a first controller configured to control the first PFC unit, and a second controller configured to control the second PFC unit, wherein the first controller is configured to: detect a voltage output from the first PFC unit, control a driving time of the first PFC unit based on the detected output voltage, and provide information on the driving time to the second PFC unit through the second controller, and wherein the second controller is configured to control a driving time of the second PFC unit based on the information on the driving time.

Growing community of inventors

Suwon-si, South Korea

Moonyoung Kim