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345 results about "Process error" patented technology

Line shape control method for short line method segment prefabrication construction

The invention discloses a line shape control method for short line method segment prefabrication construction and relates to the field of control of bridge construction. The method comprises the following steps of: calculating a theoretical prefabrication line shape according to the line shape of bridge design and the construction sequence by a tangent displacement method; building the global coordinate system of the prefabrication line shape and the local coordinate systems of all prefabrication segments; converting segment control points between the local coordinate systems and the global coordinate system by a matrix calculation method; processing errors by a non-linear least square method, and correcting coordinates of segment nodes in the global coordinate system; and adjusting the line shapes of subsequent segments by a direct adjustment method or a segmentation adjustment method according to the errors. According to the method, the errors are processed by the non-linear least square method, so the method is high in calculation speed; the influence of position errors of matched segments, measurement errors of a control point coordinate, and template errors on the prefabrication line shape is comprehensively considered, the control accuracy of the line shape is improve obviously, and the popularization of a short line method segment construction method in China is accelerated.
Owner:CHINA RAILWAY BRIDGE SCI RES INST LTD +1

FBAR with temperature compensation function and resonance frequency tuning function and filter

The invention discloses an FBAR with a temperature compensation function and a resonance frequency tuning function and a filter. The FBAR comprises a substrate, a temperature compensation and resonance frequency tuning layer, a supporting layer, a bottom electrode, a top electrode and a piezoelectric film. The middle of the bottom of the temperature compensation and resonance frequency tuning layer is provided with a groove, the substrate is arranged under the two sides of the groove, and a cavity is formed through the substrate and the bottom face of the temperature compensation and resonance frequency tuning layer; the supporting layer is arranged on the upper side of the temperature compensation and resonance frequency tuning layer; the piezoelectric film is arranged between the bottom electrode and the top electrode; the FBAR and the filter can effectively reduce temperature and frequency drift caused by a piezoelectric film with a negative temperature coefficient, and accordingly the temperature stability of the FBAR is improved. In the post-processing technology, the thickness of an FBAR lamination is adjusted by controlling etching time of the temperature compensation and resonance frequency tuning layer in the FBAR lamination, frequency drift caused by process errors can be effectively reduced, and the frequency accuracy of the FBAR is improved.
Owner:INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS

OLED (organic light-emitting diode) display screen, manufacturing method for same and display device

The invention discloses an OLED (organic light-emitting diode) display screen, a manufacturing method for the same and a display device, and aims to lower the debugging difficulty of an OLED display screen production process and improve the production efficiency and the quality of a product. The OLED display screen comprises a first substrate, a second substrate, first surrounding dam rubber, second surrounding dam rubber, an OLED device, a protective layer and filling rubber, wherein the first and second substrates are opposite to each other; the first surrounding dam rubber is connected between the first and second substrates, and is provided with at least one opening; the second surrounding dam rubber is connected between the first and second substrates, and is positioned outside the first surrounding dam rubber; the second surrounding dam rubber, the first substrate and the second substrate form a sealed box; the OLED device is positioned on the inner side of the first surrounding dam rubber, is positioned on the first substrate, and is covered by the protective layer; the protective layer is in sealed connection with the first substrate; the filling rubber is filled on the inner side of the first surrounding dam rubber. According to the OLED display screen, the manufacturing method for the same and the display device, the process error range of the filling volume of the filling rubber is widened, the debugging difficulty of the production process is lowered, and the production efficiency and the quality of the product are favorably improved.
Owner:BOE TECH GRP CO LTD

Microgyroscope with two resonant plates

A microgyroscope with two resonant plates is provided. The microgyroscope includes a substrate; first and second frames provided on the substrate to have a predetermined height, the first and second frames facing each other; a plurality of anchors supporting the first and second frames with respect to the substrate; first and second resonant plates provided between the first and second frames to be separated from each other by a predetermined distance; and a matching link unit connected to the first and second resonant plates so that it links the motion of one resonant plate to the motion of the other resonant plate such that the matching link unit is moved by the motion of one resonant plate in a first direction and then moves the other resonant plate in a second direction opposite to the first direction. In the microgyroscope, the difference between the resonance frequencies of the two resonant plates is removed by a self resonant matching structure implemented by the matching link, so that the range of an allowable process error is large, and the microgyroscope can be easily manufactured. Additionally, the reliability and the linearity of a resonance structure are improved. Since the driving beam and the sensing beam are separately designed, mode coupling can be prevented, thereby increasing the sensing sensibility.
Owner:SAMSUNG ELECTRONICS CO LTD
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