JPH0427582B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thin electronic device, and more particularly, to a thin electronic device having a display and a power source.

[Prior art] Figure 1 is a patent application published in 1983, which was published after the filing of the present application.
Showing the calculator number 151919. In this calculator, the top sheet 1 constitutes the decorative board, key top, and key contacts, but the arrangement and mounting of the components is such that the display 2 is at one end of the long side, the power supply section 3 is at the other end, and the keyboard is at the main area. 4 are arranged and mounted on a circuit board.

A spacer is provided because it is necessary to form key contacts, but the spacer is simply placed on the frame.

[Problems to be Solved by the Invention] For this reason, even if an attempt was made to make the device thinner, there were major limitations due to the thickness of the spacer.

Even if the device is made thinner, if the frame thickness becomes thinner, the strength will be insufficient and the device may be destroyed.

In addition, advanced mounting technology was required for positioning such spacers.

Therefore, there is a need for a mounting technique that simplifies the arrangement and configuration of manufacturing components and facilitates manufacturing.

[Means for Solving the Problems] The present invention has been made with the aim of solving the above-mentioned problems, and includes the following configuration as one means for achieving the problems.

That is, a circuit board that supports electronic components and an input circuit, a display member and a battery member connected to the circuit board, a first space that accommodates the display member, a second space that accommodates the battery member, and a space on the circuit board. a frame member that respectively forms a third space for accommodating an input circuit; a spacer that is housed in the third space of the frame member and is disposed on the input circuit; The sheet includes a sheet that covers the components and forms an input display section facing the input circuit.

[Function] In the above configuration, each constituent part of the thin electronic device is separated by the frame member, which is a partitioning member that performs a thickness adjustment function, so that it is possible to provide a thin electronic device in which the area of each part is clear and misplacement can be prevented.

Further, since the spacer is installed at a predetermined position with its position regulated by the frame member, the open positional relationship between the input circuit and the spacer can be aligned extremely easily and accurately.

[Example] Hereinafter, typical examples of the present invention will be described in detail with reference to the drawings.

FIG. 2 is an exploded perspective view showing the structure of a thin electronic device according to an embodiment of the present invention. In the figure, 15 is a top sheet made of a transparent flexible film such as a polyester film, a vinyl chloride film, Key symbol characters 15c and calculator model types 15d are printed on the back side of the sheet body made of a material such as polyurethane film using a printing method such as screen printing or offset printing, and furthermore, a display viewing area 15a and a light receiving area 15b of the solar cell 5 are printed. A non-transparent layer is formed by solid printing in a predetermined color on the front side except for the front surface.

Almost in the center of each key symbol 15c,
Contacts (not shown) are made by printing a conductive pattern of carbon paste, silver paste, etc. for key signal input. Therefore, the functions of a decorative board, a key top, and a key contact can be achieved with a single top sheet 15.

Note that when performing key input, it is necessary to press down the key symbol 15c with a finger or the like and bend the sheet itself, so the front sheet member 15 is preferably made of a material with appropriate flexibility as described above.

The top sheet 15 is adhesively fixed to the frame and machine parts of a frame 16 made of a material with high insulation and rigidity.

Notches 16a, 16b and 1 on frame 16
6c is a space for positioning and storing the display unit 3, solar cell 5, and LSI 10;
is a space in which the spacer 17 is housed. In order to prevent the conductive pattern, which is a movable contact printed on the lower surface of the key symbol 15c of the cover sheet 15, and the key input circuit 9a provided on the circuit board 9 from contacting each other when the key symbol 15c is not operated. A thin plate-shaped spacer 17 is interposed therebetween. This spacer 17 is provided with a plurality of holes 17a at positions corresponding to the conductive pattern and the key input circuit 9a. Therefore, when the key symbol 15c is pressed down with a finger or the like, the top sheet 15 easily bends downward, passes through the hole 17a, and the conductive pattern short-circuits the key input circuit 9a, so that the key input at the position is performed. The state will be as follows.

The circuit board 9 may be exactly the same as a conventional one, and has electronic components such as an LSI 10 mounted thereon.
Reference numeral 18 denotes a reinforcing plate as the bottom plate of the calculator, which is made of a metal material such as a stainless steel plate, an iron plate, or an aluminum plate, or a synthetic resin, and covers the bottom surface of the calculator to protect the inside.
The reinforcing plate 18 is fixed to the frame 16 with adhesive or screws.

[Effects of the Invention] As explained above, according to the present invention, the spacer is installed at a predetermined position within the frame with its position regulated by the frame member, so that it is possible to maintain sufficient strength and to reduce the thickness. At the same time, the opening positional relationship between the input circuit and the spacer can be extremely easily and precisely aligned.

In addition, since each part of the thin electronic device is separated by a frame member, the area between each part is clear,
Misplacement of each member can be prevented.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional electronic device, and FIG. 2 is an exploded perspective view showing the configuration of a calculator according to an embodiment of the present invention. In the figure, 15...Top sheet, 15a...Display viewing area, 15b...Light receiving area, 15c...Key symbol characters, 15d...Calculator model name, 16...Frame, 17...Spacer, 18...Reinforcement It is a board.

Claims (1)

[Claims] 1. A circuit board that supports electronic components and an input circuit;
A display member and a battery member connected to the circuit board, a first space for accommodating the display member, a second space for accommodating the battery member, and a third space for accommodating an input circuit on the circuit board, respectively. a frame member housed in a third space of the frame member and placed over the input circuit; a spacer adhered to the upper surface of the frame member to cover the electronic component and facing the input circuit; 1. A thin electronic device comprising: a sheet having an input display section formed thereon;