Abstract: An organic light-emitting diode includes: an anode, a cathode and a light-emitting layer between the anode and the cathode. The light-emitting layer has a blue light host material; on the side of the light-emitting layer facing the anode, an electron blocking layer is provided in the direction away from the light-emitting layer; the electron blocking layer has a hole material; and the hole material has a structural formula as shown in the following formula (I), and the blue light host material has a structural formula as shown in the following formula (II).

Abstract: An organic electroluminescent device, a display panel and a display apparatus. The organic electroluminescent device comprises: an anode and a cathode, which are arranged opposite each other; an organic electroluminescent layer, which is located between the anode and the cathode; a hole blocking layer, which is located between the organic electroluminescent layer and the cathode; and an electron transport layer, which is located between the hole blocking layer and the cathode, wherein the organic electroluminescent layer comprises: an exciplex formed by means of mixing an electron-type light-emitting host material and a hole-type light-emitting host material, and a light-emitting guest material doped in the exciplex; and the electron mobility of the electron transport layer is greater than that of the hole blocking layer, and the electron mobility of the hole blocking layer is greater than that of the electron-type light-emitting host material.

Abstract: A light-emitting device includes a light-emitting layer. The light-emitting layer includes a host material. The host material includes a p-type material and an n-type material. The p-type material and the n-type material are configured to form an exciplex. An absolute value of a difference between a wavelength corresponding to a peak of a normalized fluorescence emission spectrum of the exciplex and a wavelength corresponding to a peak of a normalized fluorescence emission spectrum of the n-type material being less than or equal to 5 nm.

Abstract: The present disclosure provides a blue organic electroluminescence device, a display panel, and a display apparatus. A blue organic electroluminescence device includes a light-emitting layer having a matrix material and a blue fluorescent doping material doped in the matrix material, where dipole moments of the matrix material and the blue fluorescent doping material are both 0 to 1 D, which can ensure higher energy transfer efficiency and charge balance, ensure that an emission spectrum is a narrow spectrum, and thus have better color purity and higher external quantum Efficiency (EQE) to obtain the blue organic electroluminescence devices with high color purity and high luminous efficiency.

Abstract: Provided are an organic light emitting device and a display apparatus. An organic light emitting device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode; wherein the emitting layer includes a host material and a dopant material doped in the host material; the host material includes a first host material and a second host material, and the first host material, the second host material, the electron block layer, and the hole block layer satisfy: |HOMO1-host-HOMOEBL|?0.2 eV,|LUMOHBL-LUMO2-host|?0.2 eV, wherein, HOMO1-host is a HOMO energy level of the first host material; HOMOEBL is a HOMO energy level of the electron block layer; LUMO2-host is a LUMO energy level of the second host material, and LUMOHBL is a LUMO energy level of the hole block layer.

Abstract: The present disclosure provides an organic light-emitting diode and a display panel, the organic light-emitting diode including: a first electrode, a second electrode, a light-emitting layer, a hole blocking layer and an electron transport layer; the first electrode and the second electrode are oppositely arranged; the light-emitting layer is between the first electrode and the second electrode; the hole blocking layer is between the light-emitting layer and the second electrode; the electron transport layer is between the hole transport layer and the second electrode, wherein the energy level difference between the HOMO energy level of the hole blocking layer and the HOMO energy level of the light-emitting layer is larger than or equal to 0.1 eV, and the energy level difference between the HOMO energy level of the electron transport layer and the HOMO energy level of the hole blocking layer is larger than or equal to 0.1 eV.

Abstract: Provided are an organic light emitting device and a display apparatus. The organic light emitting device includes an anode, a cathode, and an emitting layer disposed between the anode and the cathode, wherein the emitting layer includes a host material and a dopant material doped in the host material; the host material and the dopant material satisfy: |HOMODopant|<|HOMOHost|, |LUMODopant|?|LUMOHost|; wherein, HOMODopant is a highest occupied molecular orbit (HOMO) energy level of the dopant material, HOMOHost is a HOMO energy level of the host material, LUMODopant is a lowest unoccupied molecular orbital (LUMO) energy level of the dopant material, and LUMOHost is a LUMO energy level of the host material.

Abstract: An organic electroluminescent device, a display panel, and a display apparatus. The organic electroluminescent device comprises: an anode (301) and a cathode (302) arranged opposite to each other, an organic electroluminescent layer (303) located between the anode (301) and the cathode (302), and an electron blocking layer (304) located between the anode (301) and the organic electroluminescent layer (303); the organic electroluminescent layer (303) comprises: a first sub luminescent layer (3031), and a second sub luminescent layer (3032) located between the cathode (302) and the first sub luminescent layer (3031). The first sub luminescent layer (3031) is composed of a luminescent host material (Host), a luminescent object material (Dopant), and a hole trapping material (Trap). The second sub luminescent layer (3032) is composed of the luminescent host material (Host) and the luminescent object material (Dopant).

Abstract: A blue electroluminescent device includes: an anode, a light-emitting layer and a cathode stacked in sequence; wherein the light-emitting layer comprises a first type host material, a second type host material, and a guest doped material, one of the first type host material and the second type host material is a P-type material, and the other of the first type host material and the second type host material is a N-type material. A display panel and a display device are further provided.

Abstract: An input/output apparatus of a multiplexer is provided, including: a main tap and at least two branch taps of the main tap, where each of the at least two branch taps is configured to couple to a different resonant cavity in the multiplexer, and the at least two branch taps include a first branch tap and a second branch tap; a coupling polarity of the first branch tap is opposite to that of the second branch tap; and a coupling calculation frequency of the second branch tap is closest to a coupling calculation frequency of the first branch tap. The input/output apparatus of the multiplexer enables two channels with closest frequencies to use different coupling polarities. Because the coupling polarities are different, signals naturally do not interfere with each other, and signal interference between channels is eliminated in principle. The embodiments of the present disclosure further provide a corresponding multiplexer.

Abstract: This application describes an example dielectric resonator and a filter. One example dielectric resonator includes a body and an encirclement wall, where the encirclement wall is saliently disposed on a surface of the body. The encirclement wall of the dielectric resonator encircles the surface of the body to form a cavity area, where the encirclement wall isolates the cavity area from external space of the encirclement wall.

Abstract: An input/output apparatus of a multiplexer is provided, including: a main tap and at least two branch taps of the main tap, where each of the at least two branch taps is configured to couple to a different resonant cavity in the multiplexer, and the at least two branch taps include a first branch tap and a second branch tap; a coupling polarity of the first branch tap is opposite to that of the second branch tap; and a coupling calculation frequency of the second branch tap is closest to a coupling calculation frequency of the first branch tap. The input/output apparatus of the multiplexer enables two channels with closest frequencies to use different coupling polarities. Because the coupling polarities are different, signals naturally do not interfere with each other, and signal interference between channels is eliminated in principle. The embodiments of the present disclosure further provide a corresponding multiplexer.

Abstract: An input/output apparatus of a multiplexer is provided, including: a main tap and at least two branch taps of the main tap, where each of the at least two branch taps is configured to couple to a different resonant cavity in the multiplexer, and the at least two branch taps include a first branch tap and a second branch tap; a coupling polarity of the first branch tap is opposite to that of the second branch tap; and a coupling calculation frequency of the second branch tap is closest to a coupling calculation frequency of the first branch tap. The input/output apparatus of the multiplexer enables two channels with closest frequencies to use different coupling polarities. Because the coupling polarities are different, signals naturally do not interfere with each other, and signal interference between channels is eliminated in principle. The embodiments of the present disclosure further provide a corresponding multiplexer.

Abstract: This application describes an example dielectric resonator and a filter. One example dielectric resonator includes a body and an encirclement wall, where the encirclement wall is saliently disposed on a surface of the body. The encirclement wall of the dielectric resonator encircles the surface of the body to form a cavity area, where the encirclement wall isolates the cavity area from external space of the encirclement wall.

Abstract: An input/output apparatus of a multiplexer is provided, including: a main tap and at least two branch taps of the main tap, where each of the at least two branch taps is configured to couple to a different resonant cavity in the multiplexer, and the at least two branch taps include a first branch tap and a second branch tap; a coupling polarity of the first branch tap is opposite to that of the second branch tap; and a coupling calculation frequency of the second branch tap is closest to a coupling calculation frequency of the first branch tap. The input/output apparatus of the multiplexer enables two channels with closest frequencies to use different coupling polarities. Because the coupling polarities are different, signals naturally do not interfere with each other, and signal interference between channels is eliminated in principle. The embodiments of the present disclosure further provide a corresponding multiplexer.