In order to achieve higher frequencies and higher densities, the functional modules and sub-boards are advancing the process of adopting components with built-in bottom boards. Digital cameras and iPod-like personal AV product manufacturers are actively promoting the adoption of functional modules for communication functions. In addition, in terms of products such as digital cameras, in addition to communication functions, digital tuners are also developing to functional modularity.

In the component built-in backplane, the current trend towards increased use is the type of packaged LSI and chip-type passive components. For example, the mass production of DNP, the component built-in floorboard manufacturer, accumulated to 100 million units in November 2008. The use of a type of die and embedding of a passive component-type built-in board in a board formation process has a low yield and is therefore too costly, and most of them do not meet the requirements of an assembly company.

In order to achieve thinning, a combination of up and down asymmetry of the layer structure, thinning of the interlayer insulating film, and flattening of the built-in components are used in combination.

The goal in the future is to realize the high-density materials market demanded by the assembly companies. For example, in the field of mobile phones, in order to reduce the RF (Radio Frequency) module, etc., to about 10 mm square, the assembly company requires a fine pitch of 20 m and a thickness of 0.2 mm. In order to achieve this goal, first of all, we will promote the development of fine pitch and thin pitches in the components built-in chassis with LSIs and chip-type components packaged. Later, when this type of backplane reaches a stage where it is difficult to increase the density, there is a possibility of transitioning to a central part of China equipped with bare parts and embedded parts embedded in passive components. At present, Panasonic Electronic Components and Dainippon Printing (DNP), which are built-in components, are pushing forward the development of technologies aimed at high densification in this direction.

Wood Chair

Wood is one of the most popular materials used to make chairs and benches because of its rich appearance, durability, and ease of construction. Wood furniture can be divided into solid and veneer . Most chairs are made of solid wood. You may, however, find chair backs and aprons made out of veneer plywood. Plywood is used for strength and to eliminate warpage, splitting, expansion, and contraction.Wood chairs vary widely,such as Side Wood Chair,Wood Dining Chair, Upholstered Wood Chair and so on.

Wood Chair,Side Wood Chair,Wood Dining Chair, Upholstered Wood Chair.

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