JPH02102522U - - Google Patents
Info
- Publication number
- JPH02102522U JPH02102522U JP1005789U JP1005789U JPH02102522U JP H02102522 U JPH02102522 U JP H02102522U JP 1005789 U JP1005789 U JP 1005789U JP 1005789 U JP1005789 U JP 1005789U JP H02102522 U JPH02102522 U JP H02102522U
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- power supply
- voltage
- circuit
- crystal drive
- 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 14
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Liquid Crystal Display Device Control (AREA)
Description
第１図はこの考案の第１実施例を示すブロツク
図、第２図は第１図の出力電圧のタイムチヤート
、第３図、第４図及び第５図はそれぞれこの考案
の第２、第３及び第４実施例を示すブロツク図、
第６図は従来の液晶表示装置のブロツク図、第７
図は第６図の液晶駆動電圧発生回路２ｄの回路図
、第８図は第６図の液晶表示パネル１のブロツク
図、第９図は第８図の要部の信号波形図である。
Fig. 1 is a block diagram showing the first embodiment of this invention, Fig. 2 is a time chart of the output voltage of Fig. 1, and Figs. Block diagrams showing third and fourth embodiments,
Figure 6 is a block diagram of a conventional liquid crystal display device, and Figure 7 is a block diagram of a conventional liquid crystal display device.
8 is a block diagram of the liquid crystal display panel 1 of FIG. 6, and FIG. 9 is a signal waveform diagram of the main part of FIG. 8.
Claims (1)
時間差付与手段とより成る液晶表示装置用直流電
源装置であつて、 上記第１電源は、液晶表示装置内のデイジタル
回路用の直流電源であり、 上記第２電源は、上記第１電源の出力電圧より
電位の低い直流電圧を上記液晶駆動電圧発生回路
に供給するものであり、 上記液晶駆動電圧発生回路は、上記第１、第２
電源の出力電圧を入力して液晶表示素子の信号電
極駆動回路及び走査電極駆動回路に複数の相異な
る液晶駆動電圧を供給する回路であり、 上記時間差付与手段は、上記第１電源の電圧が
上記デイジタル回路に出力される時点を基準とし
てそれより１フレーム期間以上遅らせて上記液晶
駆動電圧発生回路の液晶駆動電圧を出力させるも
のである、 液晶表示装置用直流電源装置。[Claims for Utility Model Registration] First and second power supplies, a liquid crystal drive voltage generation circuit,
A DC power supply device for a liquid crystal display device comprising a time difference providing means, wherein the first power supply is a DC power supply for a digital circuit in the liquid crystal display device, and the second power supply is a voltage output voltage of the first power supply. A DC voltage with a lower potential is supplied to the liquid crystal drive voltage generation circuit, and the liquid crystal drive voltage generation circuit is connected to the first and second
It is a circuit that inputs the output voltage of the power supply and supplies a plurality of different liquid crystal drive voltages to the signal electrode drive circuit and the scanning electrode drive circuit of the liquid crystal display element, and the time difference applying means is configured such that the voltage of the first power supply is the same as the voltage of the first power supply. A DC power supply device for a liquid crystal display device, which outputs a liquid crystal drive voltage from the liquid crystal drive voltage generating circuit after a delay of one frame period or more from the time point at which the liquid crystal drive voltage is outputted to a digital circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005789U JPH02102522U (en) | 1989-01-30 | 1989-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005789U JPH02102522U (en) | 1989-01-30 | 1989-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02102522U true JPH02102522U (en) | 1990-08-15 |
Family
ID=31217376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1005789U Pending JPH02102522U (en) | 1989-01-30 | 1989-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02102522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002027703A1 (en) * | 2000-09-26 | 2002-04-04 | Rohm Co., Ltd. | Lcd drive apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6296994A (en) * | 1985-10-24 | 1987-05-06 | 東芝テック株式会社 | Liquid crystal display controller |
-
1989
- 1989-01-30 JP JP1005789U patent/JPH02102522U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6296994A (en) * | 1985-10-24 | 1987-05-06 | 東芝テック株式会社 | Liquid crystal display controller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002027703A1 (en) * | 2000-09-26 | 2002-04-04 | Rohm Co., Ltd. | Lcd drive apparatus |
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