Abstract: The present invention relates to a phosphine precursor for the preparation of a quantum dot, and a quantum dot prepared therefrom. Using the phosphine precursor for the preparation of a quantum dot of the present invention, a quantum dot with improved luminous efficiency and higher luminous color purity can be provided.

Abstract: Disclosed is an electronic device. According to an embodiment, the electronic device includes a housing that covers at least a portion of a back surface of the electronic device, a plurality of slits being formed in parallel from one end to an opposite end and the at least a portion of the housing being formed of a conductive material, a feeder that is electrically connected with at least one point of the housing, and a ground part that is electrically connected with at least one point of the housing. A part of the plurality of slits includes a section greater in width than another part of the plurality of slits. Moreover, various embodiment found through the disclosure are possible.

Abstract: An electronic device includes a first antenna configured to transmit and receive a first signal of a first frequency band, and a housing in which the first antenna is accommodated, wherein the housing includes a first conductor having a first slit that at least partially overlaps the first antenna, wherein the first conductor is formed of a metal and at least a portion of the first slit is filled with a metal oxide. Additionally, the electronic device includes a second conductor configured to transmit and receive a second signal of a second frequency band, and a second slit formed between the first conductor and the second conductor, and wherein the second slit is filled with a material that has an external appearance that is different from that of the second conductor.

Abstract: Disclosed is an electronic device. According to an embodiment, the electronic device includes a housing that covers at least a portion of a back surface of the electronic device, a plurality of slits being formed in parallel from one end to an opposite end and the at least a portion of the housing being formed of a conductive material, a feeder that is electrically connected with at least one point of the housing, and a ground part that is electrically connected with at least one point of the housing. A part of the plurality of slits includes a section greater in width than another part of the plurality of slits. Moreover, various embodiment found through the disclosure are possible.

Abstract: An electronic device is disclosed. The electronic device includes a housing that includes a cover glass that exposes a portion of a display, and a rear housing. The rear housing includes a first conductive region, a second conductive region physically spaced from the first conductive region, and an insulating material interposed between the first conductive and the second conductive regions. The housing also includes a printed circuit board, a wireless communication circuit, a grip sensor circuit, and a connection member. The wireless communication circuit and the grip sensor circuit are electrically connected with the first conductive region. The connection member is interposed between the printed circuit board and the rear housing and electrically connects the first conductive region and the second conductive region. The wireless communication circuit is configured to feed the first conductive region; and transmit or receive a signal in a frequency band based on an electrical path.

Abstract: An electronic device is provided. The electronic device includes a housing comprising a first plate, a second plate, and a side member surrounding a space between the first and second plates, a wireless communication circuit that feeds a first feeding point in the second plate, a ground plane electrically coupled to a first ground point and a second ground point in the second plate, and a processor. The side member includes a first side, a second side, a third side, and a fourth side. The first feeding point is between the second side and the first ground point, the first feeding point being closer to the second side than the first ground point is to the second side, and the second ground point being closer to the second side than the first feeding point and the first ground point is to the second side, and is outside the region.

Abstract: An electronic device is disclosed. The electronic device includes a housing that includes a cover glass that exposes a portion of a display, and a rear housing. The rear housing includes a first conductive region, a second conductive region physically spaced from the first conductive region, and an insulating material interposed between the first conductive and the second conductive regions. The housing also includes a printed circuit board, a wireless communication circuit, a grip sensor circuit, and a connection member. The wireless communication circuit and the grip sensor circuit are electrically connected with the first conductive region. The connection member is interposed between the printed circuit board and the rear housing and electrically connects the first conductive region and the second conductive region. The wireless communication circuit is configured to feed the first conductive region; and transmit or receive a signal in a frequency band based on an electrical path.

Abstract: An electronic device is disclosed. The electronic device includes a housing that includes a cover glass that exposes a portion of a display, and a rear housing. The rear housing includes a first conductive region, a second conductive region physically spaced from the first conductive region, and an insulating material interposed between the first conductive and the second conductive regions. The housing also includes a printed circuit board, a wireless communication circuit, a grip sensor circuit, and a connection member. The wireless communication circuit and the grip sensor circuit are electrically connected with the first conductive region. The connection member is interposed between the printed circuit board and the rear housing and electrically connects the first conductive region and the second conductive region. The wireless communication circuit is configured to feed the first conductive region; and transmit or receive a signal in a frequency band based on an electrical path.

Abstract: An electronic device is provided. The electronic device includes a housing that includes a slit, a first antenna element extending along a portion of the housing, a second antenna element spaced apart from at least a portion of the first antenna element by the slit and extends along another portion of the housing, and a wireless communication circuit positioned inside the housing and electrically connected to the first antenna element. The first antenna element is electrically connected to the second antenna element.

Abstract: An electronic device is disclosed. The electronic device includes a housing that includes a cover glass that exposes a portion of a display, and a rear housing. The rear housing includes a first conductive region, a second conductive region physically spaced from the first conductive region, and an insulating material interposed between the first conductive and the second conductive regions. The housing also includes a printed circuit board, a wireless communication circuit, a grip sensor circuit, and a connection member. The wireless communication circuit and the grip sensor circuit are electrically connected with the first conductive region. The connection member is interposed between the printed circuit board and the rear housing and electrically connects the first conductive region and the second conductive region. The wireless communication circuit is configured to feed the first conductive region; and transmit or receive a signal in a frequency band based on an electrical path.

Abstract: An electronic device is provided. The electronic device includes a housing that includes a slit, a first antenna element extending along a portion of the housing, a second antenna element spaced apart from at least a portion of the first antenna element by the slit and extends along another portion of the housing, and a wireless communication circuit positioned inside the housing and electrically connected to the first antenna element. The first antenna element is electrically connected to the second antenna element.

Abstract: An electronic device includes a first antenna configured to transmit and receive a first signal of a first frequency band, and a housing in which the first antenna is accommodated, wherein the housing includes a first conductor having a first slit that at least partially overlaps the first antenna, wherein the first conductor is formed of a metal and at least a portion of the first slit is filled with a metal oxide. Additionally, the electronic device includes a second conductor configured to transmit and receive a second signal of a second frequency band, and a second slit formed between the first conductor and the second conductor, and wherein the second slit is filled with a material that has an external appearance that is different from that of the second conductor.

Abstract: An electronic device is provided. The electronic device includes a housing comprising a first plate, a second plate, and a side member surrounding a space between the first and second plates, a wireless communication circuit that feeds a first feeding point in the second plate, a ground plane electrically coupled to a first ground point and a second ground point in the second plate, and a processor. The side member includes a first side, a second side, a third side, and a fourth side. The first feeding point is between the second side and the first ground point, the first feeding point being closer to the second side than the first ground point is to the second side, and the second ground point being closer to the second side than the first feeding point and the first ground point is to the second side, and is outside the region.

Abstract: An antenna apparatus for an electronic device is provided. The antenna apparatus includes a broadcasting antenna apparatus for receiving broadcasting, and a communicating antenna radiator arranged near the broadcasting antenna apparatus and fed simultaneously from a feed part of the broadcasting antenna apparatus.

Abstract: An antenna apparatus for an electronic device is provided. The antenna apparatus includes a broadcasting antenna apparatus for receiving broadcasting, and a communicating antenna radiator arranged near the broadcasting antenna apparatus and fed simultaneously from a feed part of the broadcasting antenna apparatus. The communicating antenna radiator is able to maintain the same performance irrespective of an operation of the broadcasting antenna apparatus, thereby improving a reliability and usability of the device and making a contribution to the minimizing of a size of the device.

Abstract: An antenna apparatus allows for internal impedance matching by employing an internal matching device therein. The antenna apparatus includes a board body formed of a dielectric material and having a flat structure. The antenna apparatus also includes an antenna device disposed on an upper surface of the board body, and the internal matching device disposed on a lower surface of the board body. The antenna device extends from a feed point and has a first impedance. The internal matching device is connected to the antenna device and has a second impedance used for matching the first impedance with a reference impedance. The antenna device and the internal matching device resonate at the reference impedance in a specific frequency band when a voltage is supplied through the feed point.

Abstract: A Multiple-Input Multiple-Output (MIMO) antenna system with multiple antennas is provided. The MIMO antenna system includes a number of conductive elements, and a number of band stop devices. The conductive elements are spaced apart from each other and operate in corresponding resonant frequency bands respectively when they receive electric power. When the conductive elements are operated, the band stop devices block interference between the conductive elements in the resonant frequency bands, and isolate the conductive elements from each other. The band stop devices are located between adjacently separate conductive elements and connect the conductive elements to each other. The MIMO antenna system can stop interference between the conductive elements via the band stop devices, thereby increasing the operational efficiency of the conductive elements.

Abstract: An antenna apparatus allows for internal impedance matching by employing an internal matching device therein. The antenna apparatus includes a board body formed of a dielectric material and having a flat structure. The antenna apparatus also includes an antenna device disposed on an upper surface of the board body, and the internal matching device disposed on a lower surface of the board body. The antenna device extends from a feed point and has a first impedance. The internal matching device is connected to the antenna device and has a second impedance used for matching the first impedance with a reference impedance. The antenna device and the internal matching device resonate at the reference impedance in a specific frequency band when a voltage is supplied through the feed point.