Abstract: A method for providing an augmented reality service using an AR sticker comprises: a step where a mobile terminal requests, from a server, an AR sticker template enabling a user to edit an AR sticker, and the server transmits the AR sticker template; a step where the mobile terminal directly edits the AR sticker image using the AR sticker template and creates AR content corresponding to the AR sticker image; a step where the server receives the AR sticker image and the AR content from the mobile terminal and stores same in an AR database, and creates an AR sticker including the AR sticker image and the AR content; a step where the mobile terminal receives the AR sticker, transmits the AR sticker to a printer, and requests printing of the AR sticker; and a step where the printer prints the AR sticker and conveys the printed AR sticker.

Abstract: Provided is a recording medium for a nail sticker and a method of manufacturing the same, and more particularly, to a recording medium and a method of manufacturing the same, which show that an ink reception layer is formed on a base of a polyurethane material so that a nail sticker can be printed using a sublimation printer. The recording medium for a nail sticker comprises: a release paper; an adhesion layer formed on the release paper; a base of a polyurethane material attached onto the adhesion layer; an undercoating layer formed on the base; and an ink reception layer formed on the undercoating layer.

Abstract: An LED display apparatus according to one exemplary embodiment is disclosed. The LED display apparatus may include: a first LED substrate in which a plurality of LED elements capable of emitting a first-wavelength light are arranged in rows and columns; a second LED substrate in which a plurality of LED elements capable of emitting a second-wavelength light are arranged, the second LED substrate being provided on the first LED substrate and having a first light transmitting portion formed by punching a partial region of the second LED substrate; and a third LED substrate which is provided on the second LED substrate and in which a plurality of LED elements capable of emitting a third-wavelength light are arranged, the third LED substrate being provided on the second LED substrate and having a second light transmitting portion formed by punching a partial region of the third LED substrate.

Abstract: A method for providing an augmented reality service using an AR sticker comprises: a step where a mobile terminal requests, from a server, an AR sticker template enabling a user to edit an AR sticker, and the server transmits the AR sticker template; a step where the mobile terminal directly edits the AR sticker image using the AR sticker template and creates AR content corresponding to the AR sticker image; a step where the server receives the AR sticker image and the AR content from the mobile terminal and stores same in an AR database, and creates an AR sticker including the AR sticker image and the AR content; a step where the mobile terminal receives the AR sticker, transmits the AR sticker to a printer, and requests printing of the AR sticker; and a step where the printer prints the AR sticker and conveys the printed AR sticker.

Abstract: An LED display device according to one embodiment of the present invention is disclosed.

Abstract: An improved lighting apparatus is disclosed. The lighting apparatus includes a direct current power supply unit, a light emitting unit operating in response to a direct current voltage applied from the direct current power supply unit, and a voltage control unit located between the direct current power supply unit and the light emitting unit to control the level of a voltage applied from the direct current power supply unit to the light emitting unit. The light emitting unit includes first light emitting groups having a first correlated color temperature and being turned on at a first turn-on voltage (VB) or above and second light emitting groups having a second correlated color temperature and being turned on at a second turn-on voltage (VA) greater than the first turn-on voltage. The first light emitting groups are connected in parallel with the second light emitting groups.

Abstract: Provided an LED display apparatus including: an LED substrate in which a plurality of LED elements emitting first-wavelength light are arranged in rows and columns; a first wavelength conversion sheet provided on the LED substrate and converting the first-wavelength light into second-wavelength light; and a second wavelength conversion sheet provided on the first wavelength conversion sheet and converting the first-wavelength light or the second-wavelength light into third-wavelength light.

Abstract: An improved lighting apparatus is disclosed. The lighting apparatus includes a direct current power supply unit, a light emitting unit operating in response to a direct current voltage applied from the direct current power supply unit, and a voltage control unit located between the direct current power supply unit and the light emitting unit to control the level of a voltage applied from the direct current power supply unit to the light emitting unit. The light emitting unit includes first light emitting groups having a first correlated color temperature and being turned on at a first turn-on voltage (VB) or above and second light emitting groups having a second correlated color temperature and being turned on at a second turn-on voltage (VA) greater than the first turn-on voltage. The first light emitting groups are connected in parallel with the second light emitting groups.

Abstract: Provided an LED display apparatus including: an LED substrate in which a plurality of LED elements emitting first-wavelength light are arranged in rows and columns; a first wavelength conversion sheet provided on the LED substrate and converting the first-wavelength light into second-wavelength light; and a second wavelength conversion sheet provided on the first wavelength conversion sheet and converting the first-wavelength light or the second-wavelength light into third-wavelength light.

Abstract: An improved lighting apparatus is disclosed. The lighting apparatus includes a direct current power supply unit, a light emitting unit operating in response to a direct current voltage applied from the direct current power supply unit, and a voltage control unit located between the direct current power supply unit and the light emitting unit to control the level of a voltage applied from the direct current power supply unit to the light emitting unit. The light emitting unit includes first light emitting groups having a first correlated color temperature and being turned on at a first turn-on voltage (VB) or above and second light emitting groups having a second correlated color temperature and being turned on at a second turn-on voltage (VA) greater than the first turn-on voltage. The first light emitting groups are connected in parallel with the second light emitting groups.

Abstract: An improved lighting apparatus is disclosed. The lighting apparatus includes a direct current power supply unit, a light emitting unit operating in response to a direct current voltage applied from the direct current power supply unit, and a voltage control unit located between the direct current power supply unit and the light emitting unit to control the level of a voltage applied from the direct current power supply unit to the light emitting unit. The light emitting unit includes first light emitting groups having a first correlated color temperature and being turned on at a first turn-on voltage (VB) or above and second light emitting groups having a second correlated color temperature and being turned on at a second turn-on voltage (VA) greater than the first turn-on voltage. The first light emitting groups are connected in parallel with the second light emitting groups.

Abstract: An improved lighting apparatus is disclosed. The lighting apparatus includes a direct current power supply unit, a light emitting unit operating in response to a direct current voltage applied from the direct current power supply unit, and a voltage control unit located between the direct current power supply unit and the light emitting unit to control the level of a voltage applied from the direct current power supply unit to the light emitting unit. The light emitting unit includes first light emitting groups having a first correlated color temperature and being turned on at a first turn-on voltage (VB) or above and second light emitting groups having a second correlated color temperature and being turned on at a second turn-on voltage (VA) greater than the first turn-on voltage. The first light emitting groups are connected in parallel with the second light emitting groups.

Abstract: An improved lighting apparatus includes a direct current power supply unit, a light emitting unit, and a voltage control unit located between the direct current power supply unit and the light emitting unit to control a level of a voltage applied from the direct current power supply unit to the light emitting unit. The light emitting unit includes first light emitting groups having a first correlated color temperature and being turned on at a first turn-on voltage or above and second light emitting groups having a second correlated color temperature and being turned on at a second turn-on voltage greater than the first turn-on voltage. The voltage control unit includes at least one variable resistor to control such that the second light emitting groups emit light or are prevented from emitting light, achieving a desired correlated color temperature according to a preset proportion.

Abstract: Exemplary embodiments of the present invention disclose an alternating current (AC) light emitting diode (LED) lighting apparatus including a rectification unit configured to receive an AC voltage and output a DC rectified voltage, an LED unit connected to the rectification unit, the LED unit comprising at least two light emitting groups, each light emitting group comprising at least one LED, and an LED driving control unit connected to the rectification unit, the LED driving control unit configured to establish a series or parallel connection between the light emitting groups, by comparing a voltage level of the rectified voltage with a reference voltage. The LED driving control unit is configured to calculate a reference voltage adjustment value in order to compensate for a signal processing delay of the LED driving control unit.

Abstract: An AC LED lighting apparatus using a voltage edge detector is provided. The AC LED lighting apparatus includes: a rectification unit configured to rectify an AC voltage to output a DC rectified voltage; an LED unit including a first light emitting group and a second light emitting group each including at least one LED; and an LED driving control unit configured to control a serial/parallel connection relationship between the first light emitting group and the second light emitting group by comparing a voltage level of the rectified voltage input from the rectification unit with a reference voltage. The LED driving control unit sets the reference voltage by detecting a slope of the rectified voltage and simultaneously detecting the voltage level of the rectified voltage and the detected slope of the rectified voltage.

Abstract: An alternating current (AC) light emitting diode (LED) luminescent apparatus includes: a rectification unit configured to: receive an AC input; and output, via full-wave rectification, a rectified voltage; light emitting groups configured to sequentially receive the rectified voltage in associated with corresponding emission periods; light emitting group driving units configured to respectively control current applied to the light emitting groups; and an LED driving integrated circuit configured to sequentially operate the light emitting groups based on voltage levels of the rectified voltage. Each emission period includes: a first portion associated with a constant current level; and a second portion associated with a higher current level than the constant level, the second portion occurring before the first portion.

Abstract: An optical semiconductor lighting apparatus including: a substrate in which a single LED chip or a plurality of LED chips are disposed; a first mold portion disposed on the substrate to cover the plurality of LED chips; and a second mold portion extending from an edge of the first mold portion and disposed on the substrate. The respective LED chips can improve adhesive strength with respect to the substrate through the first and second mold portions. Peeling, surface cracking and damage caused by moisture permeation can be prevented by the first and second mold portions. A fluorescent material included in the second mold portion can improve a wavelength conversion rate.

Abstract: An optical semiconductor lighting apparatus including: a substrate in which a single LED chip or a plurality of LED chips are disposed; a first mold portion disposed on the substrate to cover the plurality of LED chips; and a second mold portion extending from an edge of the first mold portion and disposed on the substrate. The respective LED chips can improve adhesive strength with respect to the substrate through the first and second mold portions. Peeling, surface cracking and damage caused by moisture permeation can be prevented by the first and second mold portions. A fluorescent material included in the second mold portion can improve a wavelength conversion rate.

Abstract: A light emitting module includes a printed circuit board (PCB) and first through m-th lighting blocks of optical semiconductor devices (‘m’ is an integer greater than one). The PCB has wiring patterns electrically connecting optical semiconductor devices. The first through the m-th lighting blocks are disposed on the PCB and configured to generate light. Each of the first through the m-th lighting blocks includes first through n-th lighting groups (each block includes at least one group), each of which includes optical semiconductor devices disposed on the PCB. Electric currents configured to flow through each of the first through n-th lighting group is substantially the same. The PCB includes a pair of bodies spaced apart from each other and ‘m’ number of elbows connecting the pair of bodies, and each elbow respectively corresponds to the first through the m-th lighting blocks.

Abstract: A light emitting module according to an exemplary embodiment of the present invention includes a printed circuit board (PCB) and first through m-th lighting blocks (‘m’ is an integer greater than one). The PCB has wiring patterns electrically connecting optical semiconductor devices. The first through the m-th lighting blocks are disposed on the PCB and configured to generate light. Each of the first through the m-th lighting blocks includes first through n-th lighting groups (each block includes at least one group), each of which includes optical semiconductor devices disposed on the PCB, and an electric currents configured to flow through each lighting group is substantially the same.