JPS5858624A - Electric connecting device - Google Patents

Abstract

PURPOSE:To attain electric connection between a lead terminal of an LSI and a lead-out terminal of a display element by simple constitution, by winding the end part of a flexible key wiring substrate on which plural wiring parts have been provided, to an elastic member, and placing it between terminals. CONSTITUTION:On the end part of a flexible key wiring substrate 4 such as an electronic calculator, etc., plural wiring parts 13 for electrically connecting a lead terminal 14 of an LSI 1 and a lead-out terminal 15 of a display element 3 are provided. Subsequently, the end part of such a substrate 4 is wound around an elastic member 16 of a cylindrical shape, etc. so that said wiring parts 13 come to the outside, is placed between the lead terminal 14 of the LSI and the lead-out terminal 15 so that each wiring part 13 is brought into press-contact with each prescribed lead terminal 14 and lead-out terminal 15, and electric connection between the LSI 1 and the display element 3 is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical connection device between an integrated circuit element (LSI) and a display element in an electronic desktop calculator (hereinafter simply referred to as a "calculator").

Conventionally, electrical connections between the lead terminals of an LSI and the extraction terminals of a display element such as a liquid crystal display element have been made via printed wiring, connectors, etc. formed on the printed wiring board on which the LSI is attached. , its structure was complicated.

The present invention has been made in view of the above points, and includes an LSI lead terminal that outputs a display drive signal to a display element;
The object of the invention is to obtain an electrical connection device that achieves electrical connection between the lead-out terminals of a display element with a very simple configuration, and includes a flexible key wiring board constituting a key manual device; An electronic device such as a calculator having a display element and an integrated circuit element constituting an internal circuit that executes a predetermined process based on a key human power signal input from the key human power device and outputs a predetermined display drive signal. A plurality of wiring portions for controlling electrical connections between lead terminals of the integrated circuit element and lead terminals of the display element are provided at an end of the flexible key wiring board. The end portion provided with the section is wound around a separately provided elastic member such as a cylindrical shape so that the plurality of wiring sections are on the outside, and each wiring section is pressed against the predetermined lead terminal and pull-out terminal. The elastic member, around which the end of the flexible key wiring board provided with the plurality of wiring parts is wound, is sandwiched between the lead terminal of the integrated circuit element and the lead terminal of the display element, so that The present invention provides an electrical connection device characterized in that the integrated circuit element and the display element are electrically connected by a configuration in which the integrated circuit element and the display element are integrated.

Hereinafter, the present invention will be described in detail based on examples. FIG. 1 is a sectional view showing the internal structure of a calculator embodying the present invention.

In the figure, 1 is an LSI that executes a predetermined process based on a key human power signal from a key human power device 2 and outputs a predetermined display drive signal, and 3 is a display drive signal that is output from the LSI 1. This is a liquid crystal display element that performs a predetermined display based on.

The key power device 2 is configured as follows. 0 In the figure, 4 indicates a fixed contact for key power and key wiring for supplying a key strobe signal output from the LSII to the contact. A sheet-like flexible key wiring board formed on its upper surface (5), a movable key manual contact facing the fixed contact, and a key strobe signal obtained at the movable contact when both contacts contact each other based on key presses. A sheet-like flexible key wiring board 6 is formed on the bottom surface of the key wiring for inputting to the LSII, and 6 is inserted into the two key wiring boards 4 to provide a predetermined gap between them. The spacer 7 is a key rubber whose key top part is integrally molded. Each key wiring formed on the bottom surface of the key wiring board 5 is
The crimping portions shown in section A in the figure are configured to be connected to corresponding ones of the wiring for connection to the LSII provided on the key wiring board 4, respectively. Numerals 8 and 9 are protrusions provided on the upper cabinet 10 and the key rubber 7, respectively, in order to press the key wiring board 5 onto the key wiring board 4.0 Note that 11 is a holding plate and 12 is a lower cabinet.

The features will be explained below.

FIG. 2 is a plan view showing portions of the liquid crystal display element 3, LSII, and key wiring board 4 that are related to the present invention.

As shown in the figure, a plurality of wiring sections 13 are provided at the end of the key wiring board 4. The plurality of wiring parts 13 are roughly divided into two parts 0, that is, the - connects the key wiring on the key wiring board 4 or the key wiring on the key wiring board 5 to the LSI 1. For this reason, it is connected to the connection wiring formed on the key wiring board 4, and the lead terminal 14 for key manual power of the LSll is connected to the wiring. A wiring section 13 provided for electrically connecting the wiring section 13. and
Others are lead terminals 14 for outputting LSII display drive signals.
The wiring portion 13 □ provided for electrically connecting □ and the lead-out terminal 15 of the liquid crystal display element 3 is an end portion of the key wiring board 4° on which the wiring portion 13 is provided. The elastic member 1 is wound around a cylindrical elastic member 16 about half a circumference, and the end of the key wiring board is wound around the elastic member 1.
6 by the pressing force of the valve holding plate 11, the LS
II lead terminal 14 and the glass substrate 1 of the liquid crystal display element 3
7 and hold it. As a result, the wiring section 13 connects to the lead terminal 14 of the LSll and the liquid crystal display element 3.
The lead terminal 14□ for display drive signal output of the LSII and the lead terminal 15 of the liquid crystal display element 3 are electrically connected via the wiring portion 13, and the key wiring and The lead terminal 14 for manual key input of the LSII is also electrically connected.

Note that 18 is an insulating sheet.

Reference numeral 19 denotes a positioning pin for the key wiring board 4 provided in the upper cabinet 10, and the key wiring board 4 is provided with a positioning hole 20, 20 into which the pin 19 fits.

In addition, 21.22 are LSII power supply lead terminals, 23
is a battery serving as a power source (the electrical connection mechanism between the battery 23 and the terminals 21 and 22 is omitted in the figure).

As is clear from the above description, according to the present invention, the electrical connection between the integrated circuit element and the front thread element can be achieved with an extremely simple configuration without requiring any special connector or the like. The device is what you can get.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the internal structure of a calculator embodying the present invention, and Fig. 2 is a sectional view showing the main parts of the liquid crystal display element, LS, I, and key wiring board in the calculator. Koki one-person device, 3: Liquid crystal display element,
4: Key wiring board, 11: Holder plate, 13: Wiring section, 1
4: lead terminal, 15: drawer terminal, 16 two elastic members, 17: glass substrate. Agent Patent Attorney Aihiko Fukushi

Claims (1)

[Claims] 1. Flexible key arrangement a constituting a key manual device
An electronic device having a substrate, a display element, and an integrated circuit element constituting an internal circuit that executes a predetermined process based on a key human power signal input from the key human power device and outputs a predetermined display drive signal. A plurality of wiring sections for controlling electrical connections between the lead terminals of the integrated circuit element and the lead terminals of the display element are provided at an end of the flexible key wiring board, and the plurality of wiring sections The end portion provided with the portion is wound around a separately provided elastic member such as a cylindrical shape so that the plurality of wiring portions are on the outside, and each of the wiring portions is pressure-welded to a predetermined lead terminal and pull-out terminal. The elastic member, around which the end of the flexible key wiring board provided with the plurality of wiring parts is wound, is sandwiched between the lead terminal of the integrated circuit element and the lead terminal of the display element, so that 1. An electrical connection device, characterized in that the integrated circuit element and the display element are electrically connected by having a structure in which the integrated circuit element and the display element are integrated.