Samsung Electronics Co., Ltd.

Sungyeol Kim

Kyehoon Lee

Chunsoon Park

Hyukjun Jang

Junsung Choi

Hyungsuk Kim

Kyungsoo Park

Seungyong Shin

Youngmin Lee

Sungyong Lim

Seokwoo Yong

Sungbok Yang

Seungbo Shim

Taeyeon Kim

Jinyeong Yun

Minsung Kim

Jonghoon Jung

Youngdo Kim

Meehyun Lim

Jang-Yeob Lee

Hyungjung Yong

Sunghyup Kim

Injae Lee

Sangki Nam

Namkyun Kim

HoSun Yoo

Jihwan Kim

Sungjin Kim

Sanghun Kim

Kyungmin Lee

Inho Choi

Minseok Choi

Yongwon Cho

Younghwan Kim

Sungho Jang

Keunhee Bai

Sang Ki Nam

Jeonggil Kim

Taemin Earmme

Sejin Oh

Jaewoo Kim

Punjae Choi

Myunggeun Song

Siqing Lu

Hyuck Shin

Daewon Kang

Jongbin Park

Changyun Lee

Chansoo Kang

Hyunbae Kim

Soonam Park

Jonghun Pi

Hyosin Kim

Younghwan Choi

Hadong Jin

Sunghwi Cho

Byungkook Cho

Hyeoncheol Jin

Sooyoung Park

Hanmi Choi

Siyoung Koh

Masahiko Yamabe

Dongyub Kim

Jongbeom Moon

Chunyoon Park

Jaejoong Lee

Sunghun Jang

Hongseung Cho

A display apparatus may include: at least one LED block including LEDs connected in series; a driver IC configured to apply a voltage to the at least one LED block; at least one processor; and memory storing at least one instruction that, when executed by the at least one processor, cause the display apparatus to: detect at least one forward voltage of the at least one LED block, respectively, based on a first voltage being applied to the at least one LED block; determine a margin voltage based on a difference between the first voltage and the at least one forward voltage; and determine a second voltage to be applied to the at least one LED block based on the first voltage and the margin voltage.

Display apparatus and control method thereof

In some embodiments, a display apparatus includes a liquid crystal panel, and a light apparatus including a substrate including a plurality of dimming blocks that are arranged in a matrix, a power wire configured to supply power to the plurality of dimming blocks, and a plurality of driving devices configured to control a driving current supplied to the plurality of dimming blocks. Each dimming block of the plurality of dimming blocks includes a plurality of light sources. A second dimming block of the plurality of dimming blocks is arranged in an (n+1)row adjacent to the nrow. The power wire is arranged between the nrow corresponding to the first dimming block and the (n+1)row. The power wire is coupled to a first light source of the first dimming block and to a second light source of the second dimming block.

Display apparatus and light apparatus thereof

An apparatus for providing radio frequency (RF) power includes a load having a process chamber, a RF power generator configured to provide the RF power through a cable electrically connected to the load, and a reflected power controller configured to detect reflected power from the load in a delivery mode and configured to control the RF power according to the reflected power that was detected.

Apparatus for providing RF power and operating method thereof

A display apparatus includes a display panel; and a backlight unit configured to provide light to the display panel. The backlight unit includes: a substrate including a first surface facing the display panel; a light source disposed on the first surface; a driving element disposed on the first surface to drive the light source; a plurality of lines provided on the first surface; and at least one jumper connector disposed on the first surface. Each of the at least one jumper connector corresponds to a first line and a second line of the plurality of lines, such that the jumper connector is disposed in a crossing region of the first surface at which the first line crosses the second line, and the jumper connector electrically connects with the first line and guides the second line to be spaced apart from the first line.

Display apparatus

A display apparatus includes a liquid crystal panel; and a backlight unit configured to provide light to the liquid crystal panel, wherein the backlight unit includes: a substrate; and a plurality of light emitting diode groups provided on an upper surface of the substrate, wherein each of the plurality of light emitting diode groups includes a red light emitting diode, a green light emitting diode, and a blue light emitting diode, wherein each of the red light emitting diode, the green light emitting diode, and the blue light emitting diode includes: a light emitting layer; and a distributed Bragg reflector (DBR) provided on the light emitting layer, and wherein reflectivities of the distributed Bragg reflectors of the red light emitting diode, the green light emitting diode, and the blue light emitting diode are within a same range of reflectivity according to an incident angle of light incident on the DBRs.

Backlight unit including a plurality of LEDs and associated distributed bragg reflectors

A radio frequency (RF) generating device for generating RF output signals is provided. The RF generating device includes: a controller configured to generate an RF control signal and a gain control signal; a plurality of RF signal generators, each RF signal generator being configured to generate an RF signal having at least one of a frequency and a phase determined based on the RF control signal; a plurality of RF amplification modules, each RF amplification module being configured to receive the RF signal generated by a corresponding RF signal generator and generate an RF amplification signal by controlling a gain of the RF signal based on the gain control signal; an RF switch module configured to select at least one of the RF amplification signals generated by the RF amplification modules and generate an RF output signal in a form of a multi-level pulse based on the selected at least one of the RF amplification signals; and an impedance converter connected to an electrode of an external load and configured to convert a load impedance into a target impedance having a target range, the load impedance being an impedance of the external load.

RF generating device and semiconductor manufacturing apparatus including the same

A test method for a semiconductor device includes determining a contact failure between a first semiconductor chip and a second semiconductor chip during assembly of a semiconductor package including the first semiconductor chip and the second semiconductor chip, using a test circuit embedded in the first semiconductor chip, and after the assembly of the semiconductor package, determining whether the semiconductor package is defective by using the test circuit.

Semiconductor test device and system and test method using the same

A high voltage power supply apparatus includes a high voltage direct current voltage source, a power switch configured to apply an output of the high voltage direct current voltage source to process equipment, and a sensing circuit unit including a sensor unit including a sensor and at least one operational amplifier, a reference voltage detection unit connected to a node between the sensor and the at least one operational amplifier, and a digital signal processing unit, wherein the sensing circuit unit is connected to an output terminal through which an output of the high voltage direct current voltage source is applied to the process equipment.

High voltage power supply apparatus and plasma etching equipment having the same

A light source device comprises a diffuser plate and a light source module disposed behind the diffuser plate. The light source module includes a substrate, a plurality of light emitting diodes mounted on the substrate, and a plurality of reflective layers each provided on a front surface of the plurality of light emitting diodes. When a distance between the centers of each of the plurality of light emitting diodes is referred to as a pitch, and a distance between the diffuser plate and the substrate is referred to as an optical distance, a ratio of the pitch to the optical distance satisfies the following expression: 2.5≤pitch/optical distance≤4.5.

Display apparatus and light source device thereof

Provided are a hybrid matcher capable of precisely performing impedance matching at a high speed when RF power is applied with a multi-level pulse in a facility using RF plasma, and an RF matching system including the hybrid matcher. The hybrid matcher includes a matching circuit in which a plurality of variable element-switch sets are connected to each other in parallel, the variable element-switch sets each including a variable impedance element and a switch connected to the variable impedance element in series and electrically operating therewith, a sensor disposed at a front stage of the matching circuit and configured to measure a current and a voltage of radio frequency (RF) power applied from an RF generator, a variable element driver configured to drive the variable impedance element, a switch driver configured to drive the switch, and a controller configured to control the variable element driver and the switch driver.

Hybrid matcher and radio frequency matching system including the hybrid matcher

A display apparatus includes: a liquid crystal panel; and a light apparatus on which the liquid crystal panel is disposed, the light apparatus including: a substrate; a plurality of dimming blocks including a first dimming block and a second dimming block disposed immediately next to the first dimming block, each of the plurality of dimming blocks including at least one respective light source disposed on a first side of the substrate; and a plurality of driving devices disposed on the first side of the substrate and including a first driving device disposed in the first dimming block and a second driving device disposed in the second dimming block, each driving device of the plurality of driving devices being configured to provide a driving current to the at least one respective light source included in a respective one of the plurality of dimming blocks, wherein the first driving device and the second driving device are disposed at relatively different positions respectively within the first dimming block and the second dimming block.

A display apparatus is provided that includes: a printed circuit board (PCB); a light emitting diode (LED) chip mounted on the PCB and configured to emit light; an optical dome disposed over and enclosing the LED chip; a distributed Bragg reflector (DBR) layer arranged on an upper surface of the LED chip; a liquid crystal panel configured to block or pass light output from the LED chip; an optical film arranged between the LED chip and the liquid crystal panel, wherein the optical film comprises a quantum dot sheet formed to enhance color reproducibility by making a change in wavelength of light.

A display apparatus, includes: a liquid crystal panel; and a backlight configured to provide light to the liquid crystal panel, the backlight including a substrate and a light-emitting diode (LED) that is mounted on the substrate. The LED includes a plurality of light-emitting layers configured to emit light of different wavelengths. A wavelength of light emitted from each of the plurality of light-emitting layers is greater than or equal to 430 nm and less than or equal to 480 nm.

Display apparatus including LED with plurality of light emitting layers

According to the disclosure, a display apparatus includes a printed circuit board (PCB), a light emitting diode (LED) chip mounted on the PCB and configured to emit light, an optical dome formed to enclose the LED chip by being dispensed on the LED chip, and a liquid crystal panel configured to block or pass light output from the LED chip, wherein the optical dome may be formed to satisfy 1.70<r1/r0<1.83 where r0 is a straight distance for light vertically emitted from the LED chip to reach a surface of the optical dome and r1 is a straight distance for maximum output light emitted from the LED chip to reach the surface of the optical dome.

Display apparatus and light source device thereof with optical dome

A display apparatus includes a liquid crystal panel; and a light source apparatus including a substrate on which a plurality of light emitting diodes (LEDs) are arranged where the plurality of LEDs include a plurality of first LEDs configured to be connected in series to each other by a wiring formed on the substrate, and a plurality of second LEDs configured to be connected in series to each other by a wiring formed on the substrate, and the substrate includes a first connection portion formed between a first LED of the plurality of first LEDs and a second LED of the plurality of second LEDs.

Light source apparatus, method for manufacturing light source apparatus, and display apparatus comprising light source apparatus

Growing community of inventors

Suwon-si, South Korea

Sungyeol Kim