Abstract: Disclosed are a conductive film for a sound producing apparatus, and a sound producing apparatus. The conductive film includes a conductive layer and substrate layers bonded to two surfaces of the conductive layer, the substrate layers comprising two first substrate layers directly bonded to the conductive layer, the first substrate layers being made of a thermoplastic elastomer, and the first substrate layers are connected with the conductive layer by means of hot pressing.

Abstract: A sound generator, which comprises: a housing, a vibration system and a magnetic circuit system. The vibration system and the magnetic circuit system are sequentially accommodated and fixed at a first end of the housing from top to bottom; the magnetic circuit system is provided with a rear sound hole; the housing comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system; a second end portion of the housing is integrally provided with a housing bottom wall or separately mounted with a lower cover plate; and a rear cavity which is in communication with the rear sound hole is formed between the second portion of the housing, the bottom surface of the magnetic circuit system, and the housing bottom wall or the lower cover plate.

Abstract: A sound generator comprises a shell, a vibration system and a magnetic circuit system, wherein the shell sequentially accommodates and fixes the vibration system and the magnetic circuit system from top to bottom; the magnetic circuit system comprises a magnetic conductive yoke, and a central magnetic circuit portion and a side magnetic circuit portion that are mounted on an upper surface of the magnetic conductive yoke; a magnetic gap is formed between the central magnetic circuit portion and the side magnetic circuit portion; and at least one of the central magnetic circuit portion and the side magnetic circuit portion is provided with a permanent magnet; the magnetic circuit system is provided with a rear sound hole; a rear cavity in communication with the rear sound hole is provided directly below the magnetic circuit system.

Abstract: The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes two surface layers compounded together and at least one intermediate layer located between the two surface layers, at least one of the surface layers being a thermoplastic polyester elastomer film layer (11), at least one intermediate layers being an adhesive layer (12), wherein the plastic polyester elastomer is a copolymer composed of a hard segment A of polyester and a soft segment B of polyether or aliphatic polyester, and the hard segment A of polyester has a mass percentage of 10-95%. The speaker diaphragm accommodates an excellent rigidity, a good damping performance and resilience and so on.

Abstract: A sound generator comprises a shell, a vibration system and a magnetic circuit system sequentially accommodated and fixed at a first end of the shell from top to bottom; the magnetic circuit system is provided with a rear sound hole; the shell comprises a first portion corresponding to the vibration system and the magnetic circuit system, and a second portion integrally extending downward from the first portion beyond a bottom surface of the magnetic circuit system. A second end portion of the shell is integrally provided with a shell bottom wall or separately mounted with a lower cover plate; and a rear cavity in communication with the rear sound hole is formed.

Abstract: An embodiment of the present invention provides a sound generating device which comprises a housing, wherein a sound generating unit is mounted in the housing, a closed rear cavity is formed between the sound generating unit and the housing, and the sound generating unit is provided with a rear sound hole in communication with the rear cavity, wherein the sound generating unit comprises a magnetic circuit system, an expandable-capacity cavity being provided on the magnetic circuit system, and the expandable-capacity cavity acting as part of the rear cavity to increase a volume of the rear cavity.

Abstract: The present disclosure provides a speaker diaphragm and a speaker. The speaker diaphragm comprises a thermoplastic polyester elastomer film layer (11), wherein a thermoplastic polyester elastomer is a copolymer composed of a polyester hard segment A and a polyether or aliphatic polyester soft segment B, and the thermoplastic polyester elastomer film layer has a glass transition temperature being less than or equal to 20° C., and a thermoplastic temperature being 50° C.-200° C. The use of the thermoplastic polyester elastomer film layer enables the speaker diaphragm to have a good flexibility, a high reliability, and a good durability, and improves the anti-destructive ability of the speaker.

Abstract: A speaker is disclosed, which comprises a vibration system and a magnetic circuit system cooperating with the vibration system. The vibration system includes a speaker diaphragm, the speaker diaphragm comprises two surface layers compounded together and at least one intermediate layer positioned between the two surface layers, at least one of the surface layers is a thermoplastic polyester elastomer film layer, the at least one intermediate layer is an adhesive layer, the speaker diaphragm has Young's modulus of 5-700 MPa and an amplitude of 0.25 mm-1 mm, and the speaker has F0 of 150-1500 Hz. The speaker has a good sounding effect.

Abstract: The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes a thermoplastic polyester elastomer film layer, a thermoplastic polyester elastomer being a copolymer composed of a hard segment A of polyester and a soft segment B of polyether or aliphatic polyester, wherein the thermoplastic polyester elastomer film layer has Young's modulus of 1-1000 MPa, with an elastic recovery rate after 10% strain being greater than or equal to 80%. The speaker diaphragm has a good stiffness, a good damping performance and a good resilience.

Abstract: The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes a thermoplastic polyester elastomer film layer (11), a thermoplastic polyester elastomer being a copolymer composed of a polyester hard segment A and a polyether or aliphatic polyester soft segment B, wherein a mass percentage of the polyester hard segment A is 10-95%. The speaker diaphragm features high structural strength, is not easy to be damaged, and has good toughness and resilience and a good sound generation effect.

Abstract: The present invention discloses a sound production apparatus, comprising a first vibration system, a second vibration system and a magnetic circuit system, wherein the first vibration system comprises a first diaphragm and a voice coil arranged on a side, facing the magnetic circuit system, of the first diaphragm; the second vibration system comprises a second diaphragm arranged opposite to the first diaphragm, and a middle position of the second diaphragm is combined with a reinforcement portion; the reinforcement portion is provided with an extension portion extending along a direction close to the first diaphragm, and a position, corresponding to the extension portion, in the magnetic circuit system is provided with an avoidance portion; and the extension portion is capable of passing through the avoidance portion, and is fixed to the first diaphragm.

Abstract: The present disclosure provides a speaker, comprising a vibration system including a speaker diaphragm and a magnetic circuit system cooperating with the vibration system. The speaker diaphragm comprises a thermoplastic polyester elastomer membrane and has a vibration amplitude of 0.25-1 mm, and the speaker has F0 of 150-1500 Hz. The speaker has the characteristic of good listening effect.

Abstract: The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes two surface layers compounded together and at least one intermediate layer located between the two surface layers, wherein at least one of the surface layers is a thermoplastic polyester elastomer film layer, at least one of the intermediate layers is an adhesive layer, a thermoplastic polyester elastomer is a copolymer composed of a polyester hard segment A and a polyether or aliphatic polyester soft segment B, a thickness of the thermoplastic polyester elastomer film layer is 5-70 ?m, and a thickness of the adhesive layer is 1-40 ?m.

Abstract: The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes two surface layers compounded together and at least one intermediate layer located between the two surface layers, at least one of the surface layers is a thermoplastic polyester elastomer film layer, and at least one of the intermediate layers is au adhesive layer, wherein the thermoplastic polyester elastomer film layer has a Young's module of 1-1000 MPa, a loss factor being greater than or equal to 0.015, and an elastic recovery rate after 10% strain being greater than or equal to 80%. The speaker diaphragm may be made very thin, thus reducing the weight of the speaker diaphragm, improving the space allowance for vibration, improving the sensitivity, and making the F0 of the speaker lower. Further elastic area of the speaker diaphragm is wider and the resilience performance is excellent.

Abstract: The present disclosure provides a speaker diaphragm and a speaker. The diaphragm includes two surface layers compounded together and at least one intermediate layer located between the two surface layers, at least one of the surface layers being a thermoplastic polyester elastomer film layer (11), at least one intermediate layers being an adhesive layer (12), wherein the plastic polyester elastomer is a copolymer composed of a hard segment A of polyester and a soft segment B of polyether or aliphatic polyester, and the hard segment A of polyester has a mass percentage of 10-95%. The speaker diaphragm accommodates an excellent rigidity, a good damping performance and resilience and so on.

Abstract: Disclosed is a primer and probe set for diagnosis, detection or screening of colorectal cancer. A forward primer of SEPT9 is selected from any one of SEQ ID NOs: 1-25, a reverse primer of SEPT9 is selected from any one of SEQ ID NOs: 26-51, the blocker primer of SEPT9 is selected from any one of SEQ ID NOs: 52-67, and the probe of SEPT9 is selected from any one of SEQ ID NOs: 68-90. A forward primer of SDC2 is selected from any one of SEQ ID NOs: 91-117, a reverse primer of SDC2 is selected from any one of SEQ ID NOs: 118-143, the blocker primer of SDC2 is selected from any one of SEQ ID NOs: 144-156, and the probe of SDC2 is selected from any one of SEQ ID NOs: 157-174.

Abstract: A planar antenna for digital television, wherein the planar antenna for digital television comprises a substrate, and a low-frequency radiation line and a high-frequency radiation line arranged on the substrate, the length of the low-frequency radiation lines being one quarter of a wavelength corresponding to the VHF frequency band, and the length of the high-frequency radiation lines being one quarter of a wavelength corresponding to the UHF frequency band.