JPH0561431A - Driving system for liquid crystal - Google Patents
Driving system for liquid crystalInfo
- Publication number
- JPH0561431A JPH0561431A JP22260091A JP22260091A JPH0561431A JP H0561431 A JPH0561431 A JP H0561431A JP 22260091 A JP22260091 A JP 22260091A JP 22260091 A JP22260091 A JP 22260091A JP H0561431 A JPH0561431 A JP H0561431A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- driving voltage
- outputs
- drive voltage
- crystal driving
- 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
Landscapes
- Calculators And Similar Devices (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液晶の駆動方式に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal driving system.
【０００２】[0002]
【従来の技術】従来の液晶の駆動方式は、図２に示すよ
うに液晶駆動電圧Ａ６と液晶制御信号５を出力する液晶
制御部３と前記液晶駆動電圧Ａ６と液晶制御信号５を入
力する液晶パネル４を有している。液晶駆動電圧Ａ６は
常時一電位を出力している。2. Description of the Related Art A conventional liquid crystal driving method is, as shown in FIG. 2, a liquid crystal control section 3 for outputting a liquid crystal drive voltage A6 and a liquid crystal control signal 5, and a liquid crystal for inputting the liquid crystal drive voltage A6 and a liquid crystal control signal 5. It has a panel 4. The liquid crystal drive voltage A6 always outputs one potential.
【０００３】[0003]
【発明が解決しようとする課題】従来の液晶の駆動方式
は、液晶駆動電圧Ａ６が常時パネルに印加されている
為、液晶の電力を減少させる為には、液晶駆動電圧を下
げる以外に方法がなかった。しかし、その場合液晶の特
性により十分なコントラストが得られなくなり、気温に
よっては見えなくなってしまうという問題点があった。In the conventional liquid crystal driving method, since the liquid crystal driving voltage A6 is constantly applied to the panel, there is a method other than lowering the liquid crystal driving voltage in order to reduce the power of the liquid crystal. There wasn't. However, in that case, there is a problem that sufficient contrast cannot be obtained due to the characteristics of the liquid crystal, and it becomes invisible depending on the temperature.
【０００４】[0004]
【課題を解決するための手段】本発明の液晶の駆動方式
は、任意の方形波を出力する発振回路と、液晶駆動電圧
Ａと液晶制御信号を出力する液晶制御部と、前記方形波
と前記液晶駆動電圧Ａを入力し液晶駆動電圧Ｂを出力す
る液晶駆動電圧パルス化回路を有する。A liquid crystal driving method according to the present invention comprises an oscillating circuit which outputs an arbitrary square wave, a liquid crystal control section which outputs a liquid crystal drive voltage A and a liquid crystal control signal, the square wave and the above-mentioned square wave. It has a liquid crystal drive voltage pulsing circuit which inputs the liquid crystal drive voltage A and outputs the liquid crystal drive voltage B.
【０００５】[0005]
【実施例】次に本発明について図面を参照して説明す
る。図１は本発明の一実施例のブロック図である。The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention.
【０００６】発振回路１は、パルス信号８を出力する。
パルス信号８と液晶制御部３より出力される液晶駆動電
圧Ａ６を入力とし液晶駆動電圧パルス化回路２は液晶駆
動電圧Ｂ７を出力する。また液晶制御部３は、液晶制御
信号５を液晶パネル４に出力し液晶パネルを制御する。The oscillator circuit 1 outputs a pulse signal 8.
The liquid crystal drive voltage pulsing circuit 2 receives the pulse signal 8 and the liquid crystal drive voltage A6 output from the liquid crystal controller 3, and outputs the liquid crystal drive voltage B7. Further, the liquid crystal control unit 3 outputs a liquid crystal control signal 5 to the liquid crystal panel 4 to control the liquid crystal panel.
【０００７】この時の電力は、パルス信号８のデューテ
ィ比分だけ低減される。The power at this time is reduced by the duty ratio of the pulse signal 8.
【０００８】[0008]
【発明の効果】以上説明したように本発明は、液晶駆動
電圧をパルス変換したことにより、液晶パネルに入力す
る液晶駆動電圧の液晶パネルに印加されている総時間
を、従来の場合と比較し液晶パネルの消費電力量が同一
条件化で方形波のデューティが１／２とした場合、半分
になるという効果を有する。As described above, according to the present invention, the total time applied to the liquid crystal panel of the liquid crystal drive voltage input to the liquid crystal panel is compared with the conventional case by pulse-converting the liquid crystal drive voltage. When the power consumption of the liquid crystal panel is the same, the duty of the square wave is halved.
【図１】本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】従来の一例を示すブロック図である。FIG. 2 is a block diagram showing a conventional example.
１ 発振回路 ２ 液晶駆動電圧パルス化回路 ３ 液晶制御部 ４ 液晶パネル ５ 液晶制御信号 ６ 液晶駆動電圧Ａ ７ 液晶駆動電圧Ｂ ８ 方形波 1 Oscillation Circuit 2 Liquid Crystal Driving Voltage Pulsing Circuit 3 Liquid Crystal Control Section 4 Liquid Crystal Panel 5 Liquid Crystal Control Signal 6 Liquid Crystal Driving Voltage A 7 Liquid Crystal Driving Voltage B 8 Square Wave
Claims (1)
晶駆動電圧Ａと液晶制御信号を出力する液晶制御部と、
前記方形波と前記液晶駆動電圧Ａを入力し液晶駆動電圧
Ｂを出力する液晶駆動電圧パルス化回路を有し、前記液
晶駆動電圧Ｂと前記液晶制御信号を液晶パネルに出力す
ることを特徴とする液晶の駆動方式。1. An oscillation circuit that outputs an arbitrary square wave, and a liquid crystal control unit that outputs a liquid crystal drive voltage A and a liquid crystal control signal,
A liquid crystal drive voltage pulsing circuit for inputting the square wave and the liquid crystal drive voltage A and outputting a liquid crystal drive voltage B is provided, and the liquid crystal drive voltage B and the liquid crystal control signal are output to a liquid crystal panel. Liquid crystal drive system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22260091A JPH0561431A (en) | 1991-09-03 | 1991-09-03 | Driving system for liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22260091A JPH0561431A (en) | 1991-09-03 | 1991-09-03 | Driving system for liquid crystal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0561431A true JPH0561431A (en) | 1993-03-12 |
Family
ID=16785015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22260091A Pending JPH0561431A (en) | 1991-09-03 | 1991-09-03 | Driving system for liquid crystal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0561431A (en) |
-
1991
- 1991-09-03 JP JP22260091A patent/JPH0561431A/en active Pending
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