JPH01172232U - - Google Patents
Info
- Publication number
- JPH01172232U JPH01172232U JP6949888U JP6949888U JPH01172232U JP H01172232 U JPH01172232 U JP H01172232U JP 6949888 U JP6949888 U JP 6949888U JP 6949888 U JP6949888 U JP 6949888U JP H01172232 U JPH01172232 U JP H01172232U
- Authority
- JP
- Japan
- Prior art keywords
- key
- resistive film
- input device
- key input
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Keying Circuit Devices (AREA)
Description
第１図は本考案のキー入力装置の説明用回路図
を、第２図ａは本考案の一実施例のキー入力装置
基板の展開平面図を、ｂはキー入力装置に化粧シ
ートを重ねたときの平面図を、ｃはｂの―線
を通る縦断面図を示す。
１…キー検出抵抗膜、２…基板、３…キースイ
ツチ、４…定電流電源、５，６…出力端子、７…
抵抗の一端、８…検出回路、９…トリミング抵抗
膜、１０…下基板、１１…接地電極、１２…電源
電極、１３…接地端子、１４…電源端子、１５…
キースイツチ接続点、１６…信号取り出し電極、
１７…上基板、１８…絶縁スペーサ、１９…キー
接点、２０…化粧シート、２１…文字キー、２２
…支持基板。
Fig. 1 is an explanatory circuit diagram of the key input device of the present invention, Fig. 2 a is a developed plan view of the key input device board of an embodiment of the present invention, and b is a decorative sheet overlaid on the key input device. c shows a longitudinal cross-sectional view passing through the - line of b. DESCRIPTION OF SYMBOLS 1... Key detection resistive film, 2... Board, 3... Key switch, 4... Constant current power supply, 5, 6... Output terminal, 7...
One end of a resistor, 8... Detection circuit, 9... Trimming resistive film, 10... Lower substrate, 11... Ground electrode, 12... Power supply electrode, 13... Ground terminal, 14... Power supply terminal, 15...
Key switch connection point, 16...signal extraction electrode,
17... Upper substrate, 18... Insulating spacer, 19... Key contact, 20... Decorative sheet, 21... Character key, 22
...Support substrate.
Claims (1)
膜上の複数個の点の中から、キーで選択した点と
キー検出抵抗膜の一端との間の抵抗値により該キ
ーを検出するキー入力装置において、該キー検出
抵抗膜と並列にトリミング抵抗膜を配設すること
を特徴とするキー入力装置。 Key input that detects a key based on the resistance value between a point selected by a key from among multiple points on a strip-shaped key detection resistive film arranged on one side of an insulating substrate and one end of the key detecting resistive film. A key input device, characterized in that a trimming resistive film is disposed in parallel with the key detection resistive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6949888U JPH01172232U (en) | 1988-05-26 | 1988-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6949888U JPH01172232U (en) | 1988-05-26 | 1988-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01172232U true JPH01172232U (en) | 1989-12-06 |
Family
ID=31294776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6949888U Pending JPH01172232U (en) | 1988-05-26 | 1988-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172232U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113601A (en) * | 1982-12-20 | 1984-06-30 | 株式会社日立製作所 | Film resistor |
| JPS6010519A (en) * | 1983-06-29 | 1985-01-19 | 松下電器産業株式会社 | Switch input device |
| JPS6031201A (en) * | 1983-08-01 | 1985-02-18 | 日本電気株式会社 | Thin film resistor for trimming |
| JPS60219707A (en) * | 1984-04-16 | 1985-11-02 | 株式会社東芝 | Method of producing membrane resistor |
-
1988
- 1988-05-26 JP JP6949888U patent/JPH01172232U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59113601A (en) * | 1982-12-20 | 1984-06-30 | 株式会社日立製作所 | Film resistor |
| JPS6010519A (en) * | 1983-06-29 | 1985-01-19 | 松下電器産業株式会社 | Switch input device |
| JPS6031201A (en) * | 1983-08-01 | 1985-02-18 | 日本電気株式会社 | Thin film resistor for trimming |
| JPS60219707A (en) * | 1984-04-16 | 1985-11-02 | 株式会社東芝 | Method of producing membrane resistor |
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