Lumens Co., Ltd.

Samsung Sdi Co., Inc.

JaeSoon Park

Daewon Kim

Hanbeet Chang

Yongpil Kim

Myungji Moon

Seongbok Yoon

Hyun Jung Kim

Taekyung Yoo

Yelim Won

Eunsung Shin

Sunho Choi

Keunyoung Kim

Provided is an inrush current limiter and a system including the same, the inrush current limiter including first and second input nodes for receiving an input voltage from a power source, a first output node and a second output node for being connected with a load, an inrush-current-limiting portion including a transistor connected between the first input node and the first output node, and for turning on the transistor when a voltage level of the input voltage is higher than a first level, and for limiting an inrush current by controlling time until the transistor is turned on after application of the input voltage, a switch connected between a control terminal of the transistor and the second input node, and a mode controller for turning on the switch when the voltage level of the input voltage is lower than a second level that is lower than the first level.

Inrush current limiter and system including the same

A comparator circuit includes: a comparator comprising: a first input terminal receiving an input voltage; a second input terminal receiving a reference voltage; an output terminal outputting an output signal according to a result of a comparison between the input voltage and the reference voltage; and a power supply terminal receiving an operating voltage; and a mode controller applying a first operating voltage and a first reference voltage to the second input terminal and the power supply terminal of the comparator for a predetermined delay time in response to a supply of power being initiated from a power supply, and applying a second operating voltage and a second reference voltage to the second input terminal and the power supply terminal of the comparator in response to the delay time elapsing, wherein the first operating voltage is higher than a ground voltage and is lower than the second operating voltage.

Comparator circuit and switch control device including the same

A head-mounted display apparatus is disclosed. The head-mounted display apparatus includes an optical member having a front surface, a rear surface, and a plurality of side surfaces, a display unit adapted to emit a display image toward one of the side surfaces of the optical member, and a reflective structure disposed inside the optical member to reflect the display image emitted from the display unit and to allow the reflected display image to pass and propagate through the rear surface. The image reflected by the reflective structure and delivered to user's eyes is the same irrespective of the coverage of the user's field of view.

Head-mounted display apparatuses

A micro-LED module is disclosed. The micro-LED module includes: a micro-LED including a plurality of LED cells, each of which includes a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer; a submount substrate mounted with the micro-LED; a plurality of electrode pads formed on the micro-LED cells; a plurality of electrodes formed corresponding to the plurality of electrode pads on the submount substrate; a plurality of connection members through which the plurality of electrode pads are connected to the corresponding plurality of electrodes; and a gap fill layer formed in the gap between the micro-LED and the submount substrate and having a bonding strength to the micro-LED and the submount substrate.

Micro-LED module and method for fabricating the same

A method for fabricating a micro-LED module is disclosed. The method includes: preparing a micro-LED including a plurality of electrode pads and a plurality of LED cells; preparing a submount substrate including a plurality of electrodes corresponding to the plurality of electrode pads; and flip-bonding the micro-LED to the submount substrate through a plurality of solders located between the plurality of electrode pads and the plurality of electrodes. The flip-bonding includes heating the plurality of solders by a laser.

Growing community of inventors

Yongin-si, South Korea

JaeSoon Park