Abstract: Provided are an organic electroluminescent material and device. The organic electroluminescent material is a compound having a structure of Formula 1. The compound has bluer and more saturated luminescence. These novel compounds may be used as light-emitting materials in organic electroluminescent devices and can provide better device performance such as higher current efficiency. Further provided are an organic electroluminescent device and compound composition comprising the compound having the structure of Formula 1.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode and a first organic layer and a second organic layer disposed between the anode and the cathode, where the first organic layer comprises a first compound having a structure of Formula 1, and the second organic layer comprises a second compound having a structure of Formula 3. The electroluminescent device exhibits excellent device performance, for example, higher efficiency and an extremely narrow full width at half maximum. Further provided is a display assembly comprising the organic electroluminescent device.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer comprises at least a light-emitting layer, where the light-emitting layer comprises a first compound having a structure of Formula 1, a first host material having a high triplet energy level and a second host material having a high triplet energy level. The electroluminescent device exhibits excellent overall device performance, for example, a low voltage, high efficiency and a long lifetime. Further provided are an electronic device comprising the organic electroluminescent device and a compound composition comprising a first compound having a structure of Formula 1, a first host material having a high triplet energy level and a second host material having a high triplet energy level.

Abstract: Disclosed are an aromatic amine derivative and an organic electroluminescent device including the same. A fluorenyl/silafluorenyl group having an ortho-substituted group is introduced into the structure of the aromatic amine derivative. The aromatic amine derivative may be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These novel compounds can provide better device performance.

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device is a blue delayed fluorescent device including an anode, a cathode, an emissive layer disposed between the anode and the cathode and a hole blocking layer disposed between the emissive layer and the cathode, where the hole blocking layer comprises a hole blocking material having a structure of Formula 1, and the emissive layer comprises a first host material, a second host material and a blue delayed fluorescent material having a structure of Formula 3. The blue delayed fluorescent device exhibits excellent overall device performance, such as higher efficiency and longer lifetime. Further provided are a light-emitting device comprising a blue delayed fluorescent unit, a green phosphorescent unit and a red phosphorescent unit and a display assembly comprising the blue delayed fluorescent device and the light-emitting device.

Abstract: Disclosed are an aromatic amine derivative and an organic electroluminescent device including the same. A fluorenyl/silafluorenyl group having an ortho-substituted group is introduced into the structure of the aromatic amine derivative. The aromatic amine derivative may be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These novel compounds can provide better device performance.

Abstract: An ultrasonic transducer is disclosed, which includes one or a plurality of ultrasonic emitting units. Wavefronts of the ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are sphere surfaces with uniform radius, and the one or the plurality of ultrasonic emitting units can reflect ultrasound. The one ultrasonic emitting unit is configured to form a spherical resonant cavity, or the plurality of ultrasonic emitting units are configured to form a spherical resonant cavity collectively. An internal cavity of the spherical resonant cavity has a spherical shell shape or a cross-sectional spherical shell shape with a spherical center therein. The ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are focused on an area in which the spherical center of the spherical resonant cavity is located.

Abstract: The present invention discloses an intestinal tract pushing apparatus for ultrasonic therapy. The intestinal tract pushing apparatus includes a pushing member and an acoustically transparent member. One end of said acoustically transparent member is connected to a buckling strip, and the other end of the acoustically transparent member is connected to an adhesive strip. The acoustically transparent member is bound to the human abdomen by virtue of the adhesive fastening of the buckling strip and the adhesive strip. The pushing member employs a hydraulic system.

Abstract: An ultrasonic transducer is disclosed, which includes one or a plurality of ultrasonic emitting units. Wavefronts of the ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are sphere surfaces with uniform radius, and the one or the plurality of ultrasonic emitting units can reflect ultrasound. The one ultrasonic emitting unit is configured to form a spherical resonant cavity, or the plurality of ultrasonic emitting units are configured to form a spherical resonant cavity collectively. An internal cavity of the spherical resonant cavity has a spherical shell shape or a cross-sectional spherical shell shape with a spherical center therein. The ultrasonic waves emitted by the one or the plurality of ultrasonic emitting units are focused on an area in which the spherical center of the spherical resonant cavity is located.

Abstract: The present invention relates to an ultrasound treatment clamp. The ultrasound treatment clamp comprises ultrasound therapy applicators and handles connected to the ultrasound therapy applicators. The handles are clamp-shaped. The two ultrasound therapy applicators with their central axes overlapping each other are mounted face to face on the two clamps of the clamp-shaped handles respectively. A parallel moving mechanism for keeping the two ultrasound therapy applicators in parallel when moving along with clamps is connected between the two clamps. The present invention has a compact structure, a convenient operation, a low treatment cost, a capability of quickly causing a coagulative necrosis of the diseased part. Furthermore, the present invention has an abroad use in treating many kinds of diseases.

Abstract: The present invention is to provide an integrated ultrasound therapy transducer. It includes a piezoelectric transducer to generate therapy ultrasound, a support to support the piezoelectric transducer, a power amplifying module to drive the piezoelectric transducer. Wherein both the power amplifying module and the piezoelectric transducer are installed within the enclosure of the therapy transducer. The advantages of the integrated ultrasound therapy transducer assembly of the present invention include minimizing ultrasound therapy equipment and to decrease its volume and weight; reducing the electromagnetic interference and radiation greatly; and realizing the consistent performances of the ultrasound therapy equipments in mass productions and making the ultrasound therapy equipments have interchangeability.

Abstract: The present invention discloses an intestinal tract pushing apparatus for ultrasonic therapy. The intestinal tract pushing apparatus includes a pushing member and an acoustically transparent member. One end of said acoustically transparent member is connected to a buckling strip, and the other end of the acoustically transparent member is connected to an adhesive strip. The acoustically transparent member is bound to the human abdomen by virtue of the adhesive fastening of the buckling strip and the adhesive strip. The pushing member employs a hydraulic system.

Abstract: The present invention relates to an ultrasound treatment clamp. The ultrasound treatment clamp comprises ultrasound therapy applicators and handles connected to the ultrasound therapy applicators. The handles are clamp-shaped. The two ultrasound therapy applicators with their central axes overlapping each other are mounted face to face on the two clamps of the clamp-shaped handles respectively. A parallel moving mechanism for keeping the two ultrasound therapy applicators in parallel when moving along with clamps is connected between the two clamps. The present invention has a compact structure, a convenient operation, a low treatment cost, a capability of quickly causing a coagulative necrosis of the diseased part. Furthermore, the present invention has an abroad use in treating many kinds of diseases.

Abstract: The present invention is to provide an integrated ultrasound therapy transducer. It includes a piezoelectric transducer to generate therapy ultrasound, a support to support the piezoelectric transducer, a power amplifying module to drive the piezoelectric transducer. Wherein both the power amplifying module and the piezoelectric transducer are installed within the enclosure of the therapy transducer. The advantages of the integrated ultrasound therapy transducer assembly of the present invention include minimizing ultrasound therapy equipment and to decrease its volume and weight; reducing the electromagnetic interference and radiation greatly; and realizing the consistent performances of the ultrasound therapy equipments in mass productions and making the ultrasound therapy equipments have interchangeability.

Abstract: The apparatus for high-intensity focused ultrasound therapy of the present invention usually comprises a ultrasound transducer, an image acquisition device, a driving unit for driving said ultrasound transducer and mechanical drive means for mechanically driving said ultrasound transducer and image acquisition device together. Additionally, this apparatus for high-intensity focused ultrasound therapy further comprises a signal processing unit connected to image acquisition device for receiving and saving the original images of the target area prior to treatment and for receiving and saving the images of the target area in a certain time during high-intensity focused ultrasound (HIFU) treatment and for evaluating the therapeutic effects according to the images of the target area before and after treatment, and a control unit respectively connected to signal processing unit, driving unit and mechanical driving means.

Abstract: The invention provides an ultrasound therapeutic apparatus for treating skin lesions of human being, comprising a controlling device, an ultrasound transducer transmitting the therapeutic ultrasound beam to the subject, a focusing means. Said controlling device is the electrical control system of the ultrasound therapeutic apparatus. Said ultrasound transducer and said focusing means are placed in an ultrasound applicator, which can be held by hand. The ultrasound applicator, which can be held by hand, includes a handle and a housing forming a lumen and the said ultrasound transducer and said focusing means are placed in the said lumen. The ultrasound applicator can be held by clinicians' hand, performing a treatment on skin lesions of human being including the skin lesions of gynecology more conveniently.