Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Lg Chem, Ltd

Cheil Industries Inc.

Kt Corporation

Sk Telecom Company, Ltd.

Skhynix Inc.

Postech Academy-industry Foundation

Samsung Sdi Co., Inc.

Lg Display Co., Ltd.

Other

Korea Advanced Institute of Science and Technology

Sungkyunkwan University

Samsung Mobile Display Co., Ltd.

Hewlett-packard Development Company, L.P.

Young-Hoon Kim

Seung-Chan Bang

Il-Gyu Kim

Hyeong-Geun Park

Young-Jo Ko

Kapseok Chang

Dong-Myung Kim

Ki-Woong Kim

Sung-Jin Kwon

Soon-Ho Ahn

Kap-Seok Chang

Seung-Min Ryu

Eun-Sun Yu

Mi-Young Chae

Hyoseok Yi

Nam-Il Kim

Sung-Han Yoon

Tae-Woo Lee

Himchan Cho

Sanghyuk Im

Hyo-Seok Yi

Ho-Jae Lee

Hyung-Sun Kim

Moon-Sik Lee

Eui-Su Kang

Soo-Hyun Min

Il-Hwan Choi

Seung Chan Bang

Nam-Soo Kim

Seung-Hoon Park

Sung-Hyun Jung

Jae-Yong Lee

Hyun Kyu Chung

Youn-Ok Park

Jin-Ho Choi

Byung-Jae Kwak

Sang-Wook Kang

Tae-Kwang Um

Da-Som Lee

Jae-Yung Yeo

Woo Yong Lee

Seok-Jun Won

Weon-hong Kim

Jung-Hoon Oh

Il Gyu Kim

Young Jo Ko

Jae Ho Jung

Jae-Ho Jung

Joon-Hyung Kim

Hyun-Joong Kim

Kap Seok Chang

Hyeong Geun Park

Jun-Woo Kim

Jae-Hoon Choi

Sang-yong Han

Hyo Seok Yi

Hee-jun Song

Dae-jin Kwon

Jae Seung Lee

Young-Min Kim

Jin-Woo Kim

Myeong-Suk Kim

Sung-Hun Lee

Hyun-Kyu Chung

Kyung Hyun Park

Keun Young Kim

Jong-Jin Park

Lyong-Sun Pu

Min-Woo Song

Yi-Yeol Lyu

Jung-Min Park

Hee-Seon Park

Seok Min Han

Young-Hun Byun

Kwang-Chun Lee

Das Rupasree Ragini

Seong Rag Kim

O-hyun Kwon

Dal-Ho Huh

Ik Jae Chun

Young-Mok Son

Gweon Do Jo

Jeeyon Choi

Sung-Eun Yoo

Nam-Heon Lee

Kyung Yeol Sohn

Byoung-ki Choi

Jung Hoon Oh

Jong-Eun Yang

Eunha Lee

Jae-Ho Lee

Myung Don Kim

Choun-Ki Joo

Hoo Sung Lee

Joonhyuk Kang

Sung Jun Lee

Sang-Kwon Lee

Jae Joon Park

Young-Ha Lee

Hyo-Sun Kim

A method for two-dimensional mapping of crystal information of a polycrystalline material may include acquiring a diffraction pattern acquired by scanning an electron beam to a polycrystalline material, generating a plurality of clusters by applying a clustering algorithm to the acquired diffraction pattern based on unsupervised learning, acquiring crystal information of the polycrystalline material by applying a parallel deep convolutional neural network (DCNN) algorithm to each of the plurality of generated clusters based on supervised learning, and generating a two-dimensional image in which the acquired crystal information is mapped.

Automated mapping method of crystalline structure and orientation of polycrystalline material with deep learning

Provided are a core-shell structured perovskite nanocrystalline particle light-emitting body, a method of preparing the same, and a light emitting device using the same. The core-shell structured organic-inorganic hybrid perovskite nanocrystalline particle light-emitting body or metal halide perovskite nanocrystalline particle light-emitting body is able to be dispersed in an organic solvent, and has a perovskite nanocrystal structure and a core-shell structured nanocrystalline particle structure. Therefore, in the perovskite nanocrystalline particle light-emitting body of the present invention, as a shell is formed of a substance having a wider band gap than that of a core, excitons may be more dominantly confined in the core, and durability of the nanocrystal may be improved to prevent exposure of the core perovskite to the air using a perovskite or inorganic semiconductor, which is stable in the air, or an organic polymer.

Core-shell structured perovskite nanocrystalline particle light-emitting body, method of preparing the same and light emitting device using the same

A light-emitting layer for a halide perovskite light-emitting device, a method for manufacturing the same and a perovskite light-emitting device using the same are disclosed. The light-emitting layer can be manufactured by forming a first nanoparticle thin film by coating, on a member, a solution comprising halide perovskite nanoparticles having a halide perovskite nanocrystalline structure. Thereby, a nanoparticle light emitter has therein a halide perovskite having a crystal structure in which FCC and BCC are combined; and can show high color purity. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.

Perovskite light-emitting layer and device using the same

Provided are a method for manufacturing a perovskite nanocrystal particle light-emitter where an organic ligand is substituted, a light-emitter manufactured thereby, and a light emitting device using the same. A method for manufacturing an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter where an organic ligand is substituted may comprise the steps of: preparing a solution including an organic-inorganic-hybrid perovskite nanocrystal particle light-emitter, wherein the organic-inorganic-hybrid perovskite nanocrystal particle light-emitter comprises an organic-inorganic-hybrid perovskite nanocrystal structure and a plurality of first organic ligands surrounding the organic-inorganic-hybrid perovskite nanocrystal structure; and adding, to the solution, a second organic ligand which is shorter than the first organic ligands or includes a phenyl group or a fluorine group, thereby substitutes the first organic ligands with the second organic ligand. Thus, since energy transfer or charge injection into the nanocrystal structure increases through ligand substitution, it is possible to further increase light emitting efficiency and increase durability and stability by means of a hydrophobic ligand.

Method for manufacturing perovskite nanocrystal particle light-emitter where organic ligand is substituted, nanocrystal particle light-emitter manufactured thereby, and light emitting device using same

Provided are a perovskite optoelectronic device containing an exciton buffer layer, and a method for manufacturing the same. The optoelectronic device of the present invention comprises: an exciton buffer layer in which a first electrode, a conductive layer disposed on the first electrode and comprising a conductive material, and a surface buffer layer containing fluorine-based material having lower surface energy than the conductive material are sequentially deposited; a photoactive layer disposed on the exciton buffer layer and containing a perovskite photoactive layer; and a second electrode disposed on the photoactive layer. Accordingly, a perovskite is formed with a combined FCC and BSS crystal structure in a nanoparticle photoactive layer. The present invention can also form a lamellar or layered structure in which an organic plane and an inorganic plane are alternatively deposited; and an exciton can be bound by the inorganic plane, thereby being capable of expressing high color purity.

Perovskite optoelectronic devices and method for manufacturing same

When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.

Method for transmitting control information in wireless communication systems

Perovskite light-emitting device

When a terminal generates an uplink signal in a communication system, the terminal hops a sequence for differentiating itself from another terminal with time. The terminal generates the uplink signal by multiplying a transmission symbol by a sequence of a transmission time corresponding to the transmission symbol.

Method and apparatus for transmitting uplink signal, and method and apparatus for generating uplink signal in communication system

An artificial intelligence system and method are disclosed herein. The system includes a processor which implements the method, including: receiving by an input unit a first user input including a request to execute a task using at least one of the electronic device or an external device, transmitting by a wireless communication unit first data associated with the first user input to an external server, receiving a first response from the external server including information associated with at least one of the first user input and a sequence of electronic device states for performing at least a portion of the task, receiving a second user input assigning at least one of a voice command and a touch operation received by a touch screen display as the request to perform the task, and transmitting second data associated with the second user input to the external server.

Electronic device and method of executing function of electronic device

Method for manufacturing perovskite particle light-emitter where organic ligand is substituted, particle light-emitter manufactured thereby, and light emitting device using same

A semiconductor device includes a transmission circuit suitable for sequentially outputting pulses corresponding to first to Noutput clocks to a data strobe pad in a training mode; a receiving circuit suitable for generating a rising signal and a falling signal, which are activated respectively at a rising edge and a falling edge of each of the pulses; a calibration circuit suitable for sequentially storing a detection code corresponding to a phase difference between the rising signal and the falling signal in first to Nregisters to calculate an average value of first to Nstored values, according to a period signal, and restoring respective deviations between the average value and each of the first to Nstored values in the first to Nregisters; and a clock generation circuit suitable for adjusting duty ratios of the first to Noutput clocks, using re-stored values of the first to Nregisters.

Semiconductor device including a calibration circuit capable of generating strobe signals and clock signals having accurate duty ratio and training method thereof

Provided are: a light-emitting layer for a perovskite light-emitting device; a method for manufacturing the same; and a perovskite light-emitting device using the same. The method of the present invention for manufacturing a light-emitting layer for a halide perovskite light-emitting device comprises a step of forming a first nanoparticle thin film by coating, on a member for coating a light-emitting layer, a solution comprising halide perovskite nanoparticles including a perovskite nanocrystal structure. Thereby, a nanoparticle light emitter has therein a halide perovskite having a crystal structure in which FCC and BCC are combined; and can show high color purity. In addition, it is possible to improve the luminescence efficiency and luminance of a device by making perovskite as nanoparticles and then introducing the same into a light-emitting layer.

A memory device includes a plurality of memory cell arrays, a plurality of data transmitters corresponding to the plurality of memory cell arrays, respectively, and suitable for transmitting data read in parallel from the corresponding memory cell arrays, and a test circuit suitable for selecting one data transmitter among the plurality of data transmitters, and sequentially outputting data transmitted in parallel from the selected data transmitter to one data input/output pad among a plurality of data input/output pads, during a test mode.

Memory device and test circuit thereof

Growing community of inventors

Daejeon, South Korea

Young-Hoon Kim