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  Anisotropic conductive connector and circuit-device electrical inspection deviceUSPTO Application #: 20070293062Title: Anisotropic conductive connector and circuit-device electrical inspection device Abstract: An anisotropically conductive connector having a frame plate, in which a plurality of openings have been formed in accordance with a pattern corresponding to electrodes to be connected, and an elastic anisotropically conductive film composed of a plurality of functional parts arranged in the respective openings of the frame plate. The conductive film is composed of a conductive part for connection extending in a thickness-wise direction of the film and an insulating part formed integrally with the conductive part. Conductive parts for high-frequency shielding are arranged to surround each of the conductive parts for connection, electrically connected to the frame plate and extending in the thickness-wise direction, and are formed in the part to be supported in the elastic anisotropically conductive film. The frame plate is connected to a ground. (end of abstract) Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C. - Alexandria, VA, US Inventors: Katsumi SATO, Kazuo Inoue USPTO Applicaton #: 20070293062 - Class: 439091000 (USPTO) Related Patent Categories: Electrical Connectors, Including Elastomeric Or Nonmetallic Conductive Portion, Adapted To Be Sandwiched Between Preformed Panel Circuit Arrangements The Patent Description & Claims data below is from USPTO Patent Application 20070293062. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of and claims the benefit of priority from U.S. Ser. No. 10/552,995, filed Oct. 13, 2005, and now allowed, which is a National Stage application under 35 U.S.C. .sctn. 371 of International Application PCT/JP04/04891, filed Apr. 5, 2004, and is based upon and claims the benefit of priority from Japanese Patent Application No. 2003-111225, filed Apr. 16, 2003, the entire contents of all of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an anisotropically conductive connector and an electrical inspection apparatus for circuit devices, which is equipped with this anisotropically conductive connector, and more particularly to an anisotropically conductive connector and an electrical inspection apparatus for circuit devices, which are suitable for use in electrical inspection of a circuit device having a clock frequency of, for example, at least 1 GHz. [0004] 2. Description of the Related Art [0005] An anisotropically conductive elastomer sheet is a sheet exhibiting conductivity only in its thickness-wise direction or having pressure-sensitive conductive conductor parts exhibiting conductivity only in the thickness-wise direction when they are pressurized in the thickness-wise direction. As such anisotropically conductive elastomer sheets, there have heretofore been known those of various structures. [0006] As anisotropically conductive elastomer sheets exhibiting conductivity only in the thickness-wise direction in a non-pressurized state, there have been known, for example, those obtained by arranging conductive fiber in a sheet substrate composed of insulating rubber in a state oriented so as to extend in the thickness-wise direction, and those (see, for example, the following Prior Art. 1) obtained by alternately laminating conductive rubber with carbon black or metal powder incorporated therein and insulating rubber in a plane direction thereof. wise direction, there have been known those (see, for example, the following Prior Art. 2) obtained by uniformly dispersing metal particles in an elastomer, those (see, for example, the following Prior Art. 3) obtained by unevenly distributing particles of a conductive magnetic substance in an elastomer, thereby forming a great number of conductive parts each extending in a thickness-wise direction thereof and an insulating part mutually insulating them and those (see, for example, the following Prior Art. 4) obtained by defining a difference in level between the surface of each conductive part and an insulating part. [0007] Since such an anisotropically conductive elastomer sheet has such features that compact electrical connection can be achieved without using any means such as soldering or mechanical fitting, and that soft connection is feasible with mechanical shock or strain absorbed therein, it is widely used as a connector for achieving electrical connection between a circuit device, for example, a printed circuit board, and a leadless chip carrier, liquid crystal panel or the like in fields of, for example, electronic computers, electronic digital clocks, electronic cameras and computer key boards. [0008] On the other hand, in electrical inspection of circuit devices such as semiconductor integrated circuit devices such as packaged IC and MCM, wafers, on which integrated circuits have been formed, and printed circuit boards, an anisotropically conductive elastomer sheet is used as a connector for achieving electrical connection between electrodes to be inspected formed on one surface of a circuit device, which is an object of inspection, and inspection electrodes formed on the surface of a circuit board for inspection. [0009] In this electrical inspection of the circuit device, a test of direct current characteristics for measuring a source current, input-output voltage, input-output current and the like in the circuit device, a test of alternating current characteristics for measuring a propagation delay time between input and output terminals, transition time of an output waveform, maximum clock frequency and the like in the circuit device, or the like is conducted. [0010] With the demand for speeding-up of processing in an electronic apparatus such as a computer, in resent years, a device having a high clock frequency has been used as a circuit device such as CPU installed in the electronic apparatus. In order to conduct the expected test of alternating current characteristics without causing a misfunction in electrical inspection of such a circuit device, it is important to sufficiently control noises to high-frequency signals. [0011] As a means for controlling the noises to the high-frequency signals in an anisotropically conductive elastomer sheet used in the electrical inspection of the circuit device, there has been proposed a means for supporting the anisotropically conductive elastomer sheet by a frame plate having conductivity and connecting the frame plate to a ground (see, for example, the following Prior Art. 5 and Prior Art. 6). [0012] However, according to such a means, it is difficult to sufficiently control the noises to the high-frequency signals when electrical inspection is conducted as to a circuit device having a clock frequency of, for example, at least 1 GHz. [0013] Prior Art. 1: Japanese Patent Application Laid-Open No. 94495/1975; [0014] Prior Art. 2: Japanese Patent Application Laid-Open No. 93393/1976; [0015] Prior Art. 3: Japanese Patent Application Laid-Open No. 147772/1978; [0016] Prior Art. 4: Japanese Patent Application Laid-Open No. 250906/1986; [0017] Prior Art. 5: Japanese Patent Application Laid-Open No. 2000-164041; [0018] Patent Art. 6: Japanese Patent Application Laid-Open No. 2002-33358. SUMMARY OF THE INVENTION [0019] The present invention has been made on the basis of the foregoing circumstances and has as its first object the provision of an anisotropically conductive connector, by which expected electrical inspection can be conducted even to a circuit device having a clock frequency of, for example, at least 1 GHz. [0020] A second object of the present invention is to provide an electrical inspection apparatus for circuit devices, by which expected electrical inspection can be conducted even to a circuit device having a clock frequency of, for example, at least 1 GHz. [0021] According to the present invention, there is provided an anisotropically conductive connector comprising an elastic anisotropically conductive film having a plurality of conductive parts for connection arranged in accordance with a pattern corresponding to electrodes to be connected and extending in a thickness-wise direction of the film and an insulating part mutually insulating these conductive parts for connection, Continue reading... Full patent description for Anisotropic conductive connector and circuit-device electrical inspection device Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Anisotropic conductive connector and circuit-device electrical inspection device patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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