JPH02131786U - - Google Patents
Info
- Publication number
- JPH02131786U JPH02131786U JP3860589U JP3860589U JPH02131786U JP H02131786 U JPH02131786 U JP H02131786U JP 3860589 U JP3860589 U JP 3860589U JP 3860589 U JP3860589 U JP 3860589U JP H02131786 U JPH02131786 U JP H02131786U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- liquid crystal
- voltage
- display device
- voltage waveform
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 238000013500 data storage Methods 0.000 description 1
Landscapes
- Liquid Crystal Display Device Control (AREA)
Description
第１図は本考案の一実施例の回路構成を示す図
、第２図は上記第１図中のボルテージレギユレー
タの回路構成を示す図、第３図は上記ボルテージ
レギユレータの入出力特性を示す図、第４図は本
実施例における液晶駆動信号を示す図である。
１……電池、２……スピーカ部、３……ランプ
、４，９……ボルテージレギユレータ、５……ト
レミングデータ記憶部、５ａ，５ｂ，５ｃ……ヒ
ユーズ、６……ロジツク部、７……ボルテージダ
ブラ、１０……駆動用電圧発生回路、１０ｂ，１
０ｃ……昇圧回路、１１……コモンドライバ、１
２……表示バツフア、１３……セグメントドライ
バ、１４……ＬＣＤ、１６……オペアンプ、１７
……基準電圧回路、１８……定電流源、１９……
デコーダ・ラツチ、ＳＤ……表示切換スイツチ、
ＳＬ……ランプスイツチ、ＴｒＤ……デプレツシ
ヨン形Ｐ−ＭＯＳトランジスタ。
FIG. 1 is a diagram showing the circuit configuration of an embodiment of the present invention, FIG. 2 is a diagram showing the circuit configuration of the voltage regulator in FIG. 1, and FIG. 3 is the input/output of the voltage regulator. FIG. 4, which is a diagram showing the characteristics, is a diagram showing the liquid crystal drive signal in this embodiment. DESCRIPTION OF SYMBOLS 1...Battery, 2...Speaker section, 3...Lamp, 4, 9...Voltage regulator, 5...Tremming data storage section, 5a, 5b, 5c...Fuse, 6...Logic section, 7... Voltage doubler, 10... Driving voltage generation circuit, 10b, 1
0c...Boost circuit, 11...Common driver, 1
2... Display buffer, 13... Segment driver, 14... LCD, 16... Operational amplifier, 17
...Reference voltage circuit, 18... Constant current source, 19...
Decoder latch, SD...Display changeover switch,
SL...lamp switch, TrD ...depression type P-MOS transistor.
Claims (1)
分割駆動表示を行なう液晶マトリツクス表示装置
において、 上記駆動デユーテイの切換に応じて液晶駆動用
の各電圧波形の基礎となる基本電圧波形の電圧値
を切換える電圧切換手段を備えることを特徴とす
る液晶マトリツクス表示装置。[Scope of Claim for Utility Model Registration] In a liquid crystal matrix display device that performs time-division drive display by switching the drive duty according to the display target, the basics that are the basis of each voltage waveform for driving the liquid crystal in accordance with the switching of the drive duty. A liquid crystal matrix display device comprising voltage switching means for switching the voltage value of a voltage waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3860589U JPH02131786U (en) | 1989-03-31 | 1989-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3860589U JPH02131786U (en) | 1989-03-31 | 1989-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02131786U true JPH02131786U (en) | 1990-11-01 |
Family
ID=31546759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3860589U Pending JPH02131786U (en) | 1989-03-31 | 1989-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02131786U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03119385A (en) * | 1989-10-02 | 1991-05-21 | Matsushita Electric Ind Co Ltd | Liquid crystal display circuit |
| JP2003533711A (en) * | 2000-04-04 | 2003-11-11 | イーエム・ミクロエレクトロニク−マリン・エス アー | Control method and device for multiplexed display |
| KR100613785B1 (en) * | 1997-01-30 | 2006-11-30 | 가부시끼가이샤 르네사스 테크놀로지 | Liquid crystal display controller and liquid crystal display device |
-
1989
- 1989-03-31 JP JP3860589U patent/JPH02131786U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03119385A (en) * | 1989-10-02 | 1991-05-21 | Matsushita Electric Ind Co Ltd | Liquid crystal display circuit |
| KR100613785B1 (en) * | 1997-01-30 | 2006-11-30 | 가부시끼가이샤 르네사스 테크놀로지 | Liquid crystal display controller and liquid crystal display device |
| JP2003533711A (en) * | 2000-04-04 | 2003-11-11 | イーエム・ミクロエレクトロニク−マリン・エス アー | Control method and device for multiplexed display |
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