JPH032322U - - Google Patents
Info
- Publication number
- JPH032322U JPH032322U JP6040589U JP6040589U JPH032322U JP H032322 U JPH032322 U JP H032322U JP 6040589 U JP6040589 U JP 6040589U JP 6040589 U JP6040589 U JP 6040589U JP H032322 U JPH032322 U JP H032322U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- constant voltage
- circuit
- series
- transistor trx
- 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 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Liquid Crystal Display Device Control (AREA)
Description
第１図は本考案の原理ブロツク図、第２図は本
考案の一実施例の構成図、第３図は液晶表示装置
の構成図、第４図は液晶駆動用電源回路の構成図
である。
１……電源回路、２，３……定電圧負荷、４…
…選択回路。
Fig. 1 is a block diagram of the principle of the present invention, Fig. 2 is a block diagram of an embodiment of the present invention, Fig. 3 is a block diagram of a liquid crystal display device, and Fig. 4 is a block diagram of a liquid crystal driving power supply circuit. . 1... Power supply circuit, 2, 3... Constant voltage load, 4...
...selection circuit.
Claims (1)
の直列回路を電源ＶＣＣと電源ＶＤＤ間に接続し
、前記トランジスタＴｒｘのベースに流れる電流
を制御して各抵抗間の電圧を調整する電源回路１
によつて駆動される液晶表示装置において、 前記電源回路１と前記電源ＶＤＤ間に直列に挿
入され、端子間に電流を流した時に一定電圧を発
生する複数の定電圧負荷２，３と、 前記複数の挿入される定電圧負荷２，３を目的
の個数選択する選択手段４とを設けることを特徴
とする液晶表示装置用駆動回路。[Claims for Utility Model Registration] A series circuit of a plurality of resistors Ra to Rn and a transistor Trx is connected between a power supply VCC and a power supply VDD, and the voltage between each resistor is controlled by controlling the current flowing to the base of the transistor Trx. Power supply circuit to be adjusted 1
a plurality of constant voltage loads 2 and 3 inserted in series between the power supply circuit 1 and the power supply VDD and generating a constant voltage when a current flows between the terminals; 1. A driving circuit for a liquid crystal display device, comprising a selection means 4 for selecting a desired number of constant voltage loads 2 and 3 to be inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6040589U JPH032322U (en) | 1989-05-26 | 1989-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6040589U JPH032322U (en) | 1989-05-26 | 1989-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032322U true JPH032322U (en) | 1991-01-10 |
Family
ID=31587740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6040589U Pending JPH032322U (en) | 1989-05-26 | 1989-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032322U (en) |
-
1989
- 1989-05-26 JP JP6040589U patent/JPH032322U/ja active Pending