Abstract:
PROBLEM TO BE SOLVED: To provide a light-emitting device exhibiting excellent heat dissipation and anti-high voltage characteristics which allows for cost reduction by reducing the number of mounting processes, and to provide a formation method thereof.SOLUTION: The light-emitting device comprises a base 200 including a first surface 200a, a conductive line layer 300 formed on the first surface, and a light-emitting diode module 400 including a substrate 410 and at least one light-emitting diode 450 placed on the substrate. The substrate of the light-emitting diode module is placed on the conductive line layer by surface mounting method. The base is composed of one material selected from a group of aluminum subjected to surface oxidation, aluminum having an oxide layer on the surface, aluminum oxide and aluminum nitride.
Abstract:
PROBLEM TO BE SOLVED: To provide a screen printing device which can simply check whether substrate alignment precision is favorable or not in continuing manufacturing processes in a configuration which horizontally moves an imaging part having two imaging optical axes aimed at a substrate and a mask plate as imaging objects, and to provide a screen printing method.SOLUTION: Prior to a mark imaging step carried out for the purpose of position detection of recognition marks for aligning the substrate and the mask, an optical axis calibration processing step of detecting a horizontal direction relative position between the imaging optical axes, and a surface correction data preparation processing step of detecting local position misregistration in the imaging optical axes caused by the movement of the imaging part are carried out. Before the start of manufacturing, a pre-manufacturing precision evaluation step is carried out for evaluating the substrate alignment precision using the validation substrate and the mask. After the start of the manufacturing, a post-manufacturing precision evaluation step of evaluating the substrate alignment precision after the start of the manufacturing is carried out using actual manufacturing substrate and the mask.
Abstract:
PROBLEM TO BE SOLVED: To easily confirm an influence of extraction or reintroduction of a board in a solder printing process on the board quality. SOLUTION: In the solder printing inspection machine, identification codes and inspection time of hourly inspection target boards are accumulated in a memory. The accumulated data are searched for a board whose identification code agrees with that of the current inspection target board, while the accumulated data are traced back one by one. When the corresponding board is found, it is recognized that the board was extracted because of its defect and the inspection target board is the reintroduced board previously extracted. A graph which shows information expressing the quality of each board arrayed in time series is produced based on each inspection result and is displayed on a monitor. In the data included in the graph, the data corresponding to the board recognized as the reintroduced board are explicitly shown by a letter "R". COPYRIGHT: (C)2011,JPO&INPIT