Abstract: A method of forming a pre-molded lead frame having increased stand-offs includes the steps of attaching a first tape to a first side of the lead frame and a second tape to a second side of the lead frame. The taped lead frame is placed in a mold and a first flow of mold compound is initiated. The first flow of the mold compound fills a space between the first tape and an upper mold chase of the mold. A second flow of the mold compound then is initiated. The second flow of the mold compound fills the spaces between a die pad and leads of the lead frame. The first and second tapes then are removed from the lead frame. Improved stand-offs are provided because the first tape was depressed by the first flow of the mold compound.

Abstract: Designs and techniques of Composite Right-Left Handed (CRLH) Metamaterial (MTM) antenna devices, including a CRLH MTM devices that include MTM cells formed on a substrate and a conductive launch stub formed on the substrate to be adjacent to each of the MTM cells and electromagnetically coupled to each of the MTM cells.

Abstract: Metamaterial antennas provide spatially varying electromagnetic coupling that enables impedance matching conditions for different operating frequencies of the MTM antennas so that such antennas can operate at different frequencies for wideband applications, including ultra wideband applications.

Abstract: Antennas for wireless communications based on metamaterial (MTM) structures to arrange one or more antenna sections of an MTM antenna away from one or more other antenna sections of the same MTM antenna so that the antenna sections of the MTM antenna are spatially distributed in a non-planar configuration to provide a compact structure adapted to fit to an allocated space or volume of a wireless communication device, such as a portable wireless communication device.

Abstract: In one embodiment of the present invention, on the surface of a material to be measured for stress analysis which has a stress-induced luminescent material layer formed thereon, a distortion energy is disclosed which is transmitted from a base material of a stress-induced luminescent material to the stress-induced luminescent material with high efficiency. The material to be measured for stress analysis has, on the surface thereof, a coating film layer, which emits light upon exposure to a change in distortion energy. The coating film layer is formed of a synthetic resin layer containing stress-induced luminescent particles, and the modulus of elasticity of a base material is not less than 1.0 GPa. The thickness of the coating film layer is preferably 1 ?m to 500 ?m.

Abstract: Designs and techniques of Composite Right-Left Handed (CRLH) Metamaterial (MTM) antenna devices, including a CRLH MTM devices that include MTM cells formed on a substrate and a conductive launch stub formed on the substrate to be adjacent to each of the MTM cells and electromagnetically coupled to each of the MTM cells.

Abstract: In a method of packaging a semiconductor IC, a tape is attached to a back surface of a lead frame array, and the lead frame array is held between an upper mold chase and a lower mold chase of a mold, with the back surface of the lead frame array upward. The upper and lower mold chases form an upper cavity and a lower cavity with respect to the lead frame array respectively. A mold compound is injected into the upper and lower cavities respectively. With respect to clearances between leads, between die pads and/or between the leads and the die pads, the mold compound injected into the upper cavity covers the portion of the tape over the clearances before the mold compound injected into the lower cavity fills the clearances, so that the tape is depressed.

Abstract: Provided is a stress history recording system for recording a stress history, which includes a light emitting means including a stress-stimulated luminescent material that emits light in response to a mechanical external force, and a recording means for recording a history of a photoreaction generated due to light emission from the light emitting means. This achieves a technology for recording a stress history by using the stress-stimulated luminescent material.

Abstract: A method of forming a pre-molded lead frame having increased stand-offs includes the steps of attaching a first tape to a first side of the lead frame and a second tape to a second side of the lead frame. The taped lead frame is placed in a mold and a first flow of mold compound is initiated. The first flow of the mold compound fills a space between the first tape and an upper mold chase of the mold. A second flow of the mold compound then is initiated. The second flow of the mold compound fills the spaces between a die pad and leads of the lead frame. The first and second tapes then are removed from the lead frame. Improved stand-offs are provided because the first tape was depressed by the first flow of the mold compound.

Abstract: Provided are a stress analysis method and stress analysis equipment that enable a detailed stress measurement, by using both a photoelasticity measurement method and a stress measurement (mechanoluminescence measurement) which utilizes a mechanoluminescent substance to measure a stress state of an object. Physical quantities that are measurable include individual principal stress component and a principal stress direction. The photoelasticity measurement method alone cannot measure individual principal stress component values.

Abstract: One embodiment of the present invention provides (i) a luminant having a unique crystal structure so as to exhibit high luminosity and (ii) a manufacturing method thereof. Further, the present invention discloses (I) a luminant which exhibits ultraviolet luminescence and (II) a manufacturing method thereof. The inventors developed a stress-stimulated luminescent material which exhibits high luminosity by using a compound having a structure obtained by inserting alkali metal ions and alkali earth metal ions into a base material structure constituted of polyhedral-structure molecules and partially substituting the alkali metal ions and alkali earth metal ions by rare earth metal ions, transition metal ions, group-III metal ions, or group-IV metal ions.

Abstract: One embodiment of the present invention is to provide a stress-stimulated luminescent material which has a unique crystal structure and which emits conventionally unachievable intense light. The stress-stimulated luminescent material of one embodiment of the present invention includes a basic structure in which a plurality of tetrahedral molecules each having an AlO4-like tetrahedral structure or an SiO4-like tetrahedral structure share atoms of apexes of the tetrahedral structures so as to be coupled to one another so that a basic material structure is formed and at least either alkali metal ions or alkali earth metal ions are inserted into the void are partially substituted by at least either rare earth metal ions or transition metal ions.

Abstract: When visualizing the stress distribution of natural bone, synthetic bone, or a member attached to either thereof without omitted points, in order to measure accurately in a variety of modes using an inexpensive system, a mechanoluminescence material thin film 6 is formed in advance on a bone material peripheral surface 5 in an appropriate area thereof including the portion where an insertion support portion 4 of an artificial hip prosthesis 2 is inserted into a hollow inside 3 of a damaged femur 1 or a synthetic bone simulating the damaged femur. The mechanoluminescence material thin film 6 portion is photographed over its entire circumference with an IICCD camera 7 from the external peripheral side thereof as or after the artificial hip prosthesis 2 is inserted. The obtained image is fed to a computer 11 to obtain a luminescence image 8. The computer 11 outputs the intensities of the received light in the form of an image as is, so that the luminescence image 8 can be obtained easily.

Abstract: The present invention provide a high-luminosity stress-stimulated luminescent material which emits visible light even in daylight, a manufacturing method thereof, and a typical example of the use thereof. The stress-stimulated luminescent material of the present invention satisfies conditions for light emission by at least one of: a luminescence mechanism using static electricity caused by friction; a luminescence mechanism using micro plasma caused by friction; a luminescence mechanism using a piezoelectric effect caused by strain; a luminescence mechanism using lattice defect; and a luminescence mechanism using thermal generation. For example, in case where a base material made of at least one type of aluminate is includes as the stress-stimulated luminescent material, the base material includes a crystal structure with spontaneous polarization, e.g. ?-SrAl2O4, in order to realize the luminescence mechanism using the piezoelectric effect caused by strain.

Abstract: A stacked structure (1) includes an electrostriction layer (2) including an electric inductive distortion material and a stress light-emitting layer (3) including a stress light-emitting material. When applying a voltage to the electrostriction layer (2) in the stacked structure (1), the electric inductive distortion material deforms, thereby the electrostriction layer (2) deforms. The deformation of the electrostriction layer (2) causes an external force to act on the stress light-emitting material of the stress light-emitting layer (3), and the stress light-emitting layer (3) emits light, accordingly. That is, by applying the voltage to the stacked structure (1), the stacked structure (1) can emit the light.

Abstract: There is an essential limitation that only surface principal stress sum variation (?(?1+?2)) can be measured as physical quantity by a thermoelastic stress measurement technique, and furthermore respective principal stress components are unknown, and pure shearing stress acting on an object cannot be measured because it causes no temperature variation. Thus, in the present invention, when stress state of the object is measured, not only the thermoelastic stress measurement but also stress measurement (mechanoluminescence measurement) using a mechanoluminescence material is used in combination. Consequently, stress can be measured in detail; for example, principal stress component values (?1 and ?2) can be known while exceeding the principle limitation of the thermoelastic stress measurement technique.

Abstract: A novel highly bright mechanoluminescence material free from decay of luminescence brightness even if repeated stress is applied, comprising a composite semiconductor crystal of the general formula xM1A1.(1-x)M2A2 (wherein each of M1 and M2 independently represents an atom selected from among Zn, Mn, Cd, Cu, Eu, Fe, Co, Ni, Mg and Ca, and each of A1 and A2 is an atom independently selected from among chalcogens, provided that M1A1 is different from M2A2; and x is a positive number less than 1); and a process for producing the same.

Abstract: A mechanoluminescence material comprising a matrix of composite metal oxide containing strontium and aluminum, represented by the general formula SrM1Al6O11 (wherein M1 is an alkaline earth metal) or SrM2Al3O7 (wherein M2 is a rare earth metal), and further comprising, as luminescence centers, a metal selected from among rare earth metals and transition metals capable of emitting light when a carrier having been excited by mechanical energy returns to its ground state.

Abstract: Provided are a stress analysis method and stress analysis equipment that enable a detailed stress measurement, by using both a photoelasticity measurement method and a stress measurement (mechanoluminescence measurement) which utilizes a mechanoluminescent substance to measure a stress state of an object. Physical quantities that are measurable include individual principal stress component and a principal stress direction. The photoelasticity measurement method alone cannot measure individual principal stress component values.

Abstract: A mechanoluminescence material comprising a mother body material and a luminescence center added to the mother body material. The mother body material is constituted of at least one kind of oxide selected from alumino silicate, aluminate, silicate, tantalate, niobate, gallium oxide, and ZrO2, and the luminescence center is at least one kind selected from a rare earth metal and a transition metal which emits light when electrons excited by mechanical energy are restored to a normal state.