Abstract:
A white light emitting device is provided. The white light emitting device includes a blue light emitting diode configured to emit blue light having a peak wavelength in a first range of 440 nm to 455 nm; a first wavelength conversion material, based on being excited by the blue light, emits first light having a peak wavelength in a second range of 535 nm to 550 nm and a full width at half maximum (FWHM) of 60 nm or less; and a second wavelength conversion material, based on being excited by the blue light, emits second light having a peak wavelength in a third range of 620 nm to 660 nm, wherein a melanopic photopic ratio of white light emitted from the white light emitting device is 0.65 or less, and a color rendering index (CRI) of the white light is 80 or more.
Abstract:
A light emitting diode is provided and includes a first light emitting chip configured to emit red light having a peak wavelength within a range of 580 nm to 700 nm, and a wavelength converter including an encapsulant and at least one phosphor that is inside the encapsulant. The at least one phosphor is configured to absorb a portion of the red light and emit first-type light having a peak wavelength that is greater than the peak wavelength of the red light.
Abstract:
A light emitting diode (LED) module that is configured to emit white light is provided. The LED module includes: a blue light emitting diode configured to emit blue light having a first peak wavelength of 420 nm to 465 nm; at least one wavelength conversion material that is configured to convert a portion of the blue light into converted light of a different wavelength; and a near-infrared light source configured to emit additional light having a second peak wavelength in a range of 740 nm to 900 nm and a full width at half maximum (FWHM) of 120 nm or less. The converted light, another portion of the blue light, and the additional light combine to form the white light.
Abstract:
A light emitting device includes a first LED chip to emit a light having a peak wavelength in a range of 410 to 430 nm, a second LED chip to emit a light having a peak wavelength in a range of 440 to 460 nm, a first quantum dot to convert light emitted by the first and second LED chips into light having a peak wavelength in a range of 510 to 550 nm, and a second quantum dot to convert light emitted by the first and second LED chips into light having a peak wavelength in a range of 610 to 660 nm, wherein, in an emission spectrum of final light, intensity of a peak wavelength of the first LED chip is 15% or less of intensity of a peak wavelength of the second LED chip.
Abstract:
Various embodiments provide a handheld electronic device capable of magnetic field communication. The handheld electronic device includes: a first cover, a second cover, a memory, a display, a processor, first and second antennas, and at least one sensor. The memory stores instructions that enable the processor to: store payment information in the memory; display at least one image or text related to the payment information on the display, in response to at least part of a user input; determine whether a payment process starts by using the electronic device; and transmit, according to the determination as to whether a payment process starts, a first signal related to the payment information via the first antenna, and allow an external device to read the payment information via the second antenna.
Abstract:
An LED lighting apparatus, including an LED light source configured to emit white light having a first melanopic/photopic (M/P) ratio; a tuning LED light source configured to emit tuning blue light having a peak wavelength in a range of 465 nm to 495 nm; and a driving control unit configured to control currents respectively applied to the LED light source and the tuning LED light source to generate tuned white light having a second M/P ratio higher than the first M/P ratio
Abstract:
An energy generating device and a method of manufacturing the same are provided. The energy generating device includes a first electrode, a metal layer, including a regular arrangement of a plurality of patterns, disposed on the first electrode, an organic material layer positioned on the metal layer, and a piezoelectric layer interposed between the first electrode and the organic material layer.
Abstract:
An electronic device may include, for example: a first battery; at least one second battery; a power management module configured to monitor capacity information of the first battery; and a processor electrically connected to the first battery, the at least one second battery, and the power management module. The processor may be configured to: monitor whether a designated event or a low-power state in which a voltage of the first battery drops below a reference value has occurred, while the electronic device is driven using the first battery; determine that the designated event has occurred or that the first battery corresponds to the low-power state; and parallel-connect the first battery and at least one of the at least one second battery, based on determining that the designated event has occurred, or that the first battery corresponds to the low-power state. Various other embodiments are possible.
Abstract:
Systems and methods are described for a white light emitting module that emits a third white light with the goal of providing human-friendly illumination. The white light emitting device comprise a first light emitting package that emits a first white light and a second light emitting package that emits a second white light. The first light emitting package includes a first light emitting device and a filter member that filters light emitted from the first light emitting device and then reduces a color temperature of the first white light. The second light emitting package includes second and third light devices. The color temperature of the first white light is about 1,500 K to about 4,000 K. A color temperature of the second white light is about 3,000 K to 10,000 K.
Abstract:
An electronic device including an antenna is provided. The electronic device includes a housing including a first housing structure having a first side member, a second housing structure having a second side member, and a hinge structure connecting the first housing structure and the second housing structure to each other, and a transceiver electrically connected with the first side member and the second side member. The first side member includes a first conductive member, a second conducive member spaced apart from the first conductive member, and a first nonconductive member disposed between the first conductive member and the second conductive member, as a first antenna group, and a third conductive member disposed at an edge adjacent to the hinge structure of edges of the first side member to correspond to the first conductive member, a fourth conductive member facing the second conductive member and spaced apart from the third conductive member, and a second nonconductive member disposed between the third conductive member and the fourth conductive member as a second antenna group.