JP4574641B2 - 液晶表示ユニット - Google Patents
液晶表示ユニット Download PDFInfo
- Publication number
- JP4574641B2 JP4574641B2 JP2007118119A JP2007118119A JP4574641B2 JP 4574641 B2 JP4574641 B2 JP 4574641B2 JP 2007118119 A JP2007118119 A JP 2007118119A JP 2007118119 A JP2007118119 A JP 2007118119A JP 4574641 B2 JP4574641 B2 JP 4574641B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- discharge tube
- transformer
- voltage
- signal
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
2LCDユニット(液晶表示ユニット)
3 寄生容量
4 発振回路
8 PWM回路
11 エラーアンプ
14、15 カウンタ回路
17 Hブリッジ回路
22 バースト回路
29 ロジック回路
30、50 プロテクト回路
51 電圧帰還用エラーアンプ
Claims (1)
- 液晶表示装置のバックライトとしての放電管を備え、二次側に接続される前記放電管に生じる寄生容量により二次側に共振回路が形成される電磁トランスと、
前記共振回路の共振周波数未満で、かつ前記電磁トランスの一次側の電圧と電流との位相差が最小となる周波数よりも−30°の範囲内となる周波数を発振回路で生成し、該周波数で前記電磁トランスの一次側を駆動する4つのスイッチからなるHブリッジ回路とを有する前記放電管用の他励式インバータ回路を備え、
前記Hブリッジ回路はPMOSとNMOSからなるスイッチの直列回路が並列に接続されて構成され、前記Hブリッジ回路の駆動タイミングに一つのスイッチのみがONになるタイミングを設けたことを特徴とする液晶表示ユニット。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007118119A JP4574641B2 (ja) | 2001-09-21 | 2007-04-27 | 液晶表示ユニット |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001288748 | 2001-09-21 | ||
JP2007118119A JP4574641B2 (ja) | 2001-09-21 | 2007-04-27 | 液晶表示ユニット |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002271547A Division JP4267883B2 (ja) | 2001-09-21 | 2002-09-18 | 液晶表示ユニット |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009157928A Division JP4536145B2 (ja) | 2001-09-21 | 2009-07-02 | 液晶表示ユニット |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007234608A JP2007234608A (ja) | 2007-09-13 |
JP4574641B2 true JP4574641B2 (ja) | 2010-11-04 |
Family
ID=38554939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007118119A Expired - Fee Related JP4574641B2 (ja) | 2001-09-21 | 2007-04-27 | 液晶表示ユニット |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4574641B2 (ja) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0767357A (ja) * | 1993-08-30 | 1995-03-10 | Masakazu Ushijima | 放電管用インバーター回路 |
JPH07274522A (ja) * | 1994-03-28 | 1995-10-20 | Matsushita Electric Works Ltd | 負荷制御装置 |
JPH0831585A (ja) * | 1994-07-15 | 1996-02-02 | Ushio Inc | 誘電体バリア放電装置 |
JPH10223388A (ja) * | 1997-02-06 | 1998-08-21 | Nippon Cement Co Ltd | 圧電トランスの制御回路 |
JP2000092865A (ja) * | 1998-09-14 | 2000-03-31 | Matsushita Electric Works Ltd | インバータ装置 |
JP2000133484A (ja) * | 1998-10-29 | 2000-05-12 | Hitachi Metals Ltd | 放電管駆動回路 |
JP2001145372A (ja) * | 1999-11-15 | 2001-05-25 | Matsushita Electric Works Ltd | 電源装置制御回路 |
JP2001197755A (ja) * | 2000-01-11 | 2001-07-19 | Toyota Autom Loom Works Ltd | スイッチ制御回路 |
-
2007
- 2007-04-27 JP JP2007118119A patent/JP4574641B2/ja not_active Expired - Fee Related
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0767357A (ja) * | 1993-08-30 | 1995-03-10 | Masakazu Ushijima | 放電管用インバーター回路 |
JPH07274522A (ja) * | 1994-03-28 | 1995-10-20 | Matsushita Electric Works Ltd | 負荷制御装置 |
JPH0831585A (ja) * | 1994-07-15 | 1996-02-02 | Ushio Inc | 誘電体バリア放電装置 |
JPH10223388A (ja) * | 1997-02-06 | 1998-08-21 | Nippon Cement Co Ltd | 圧電トランスの制御回路 |
JP2000092865A (ja) * | 1998-09-14 | 2000-03-31 | Matsushita Electric Works Ltd | インバータ装置 |
JP2000133484A (ja) * | 1998-10-29 | 2000-05-12 | Hitachi Metals Ltd | 放電管駆動回路 |
JP2001145372A (ja) * | 1999-11-15 | 2001-05-25 | Matsushita Electric Works Ltd | 電源装置制御回路 |
JP2001197755A (ja) * | 2000-01-11 | 2001-07-19 | Toyota Autom Loom Works Ltd | スイッチ制御回路 |
Also Published As
Publication number | Publication date |
---|---|
JP2007234608A (ja) | 2007-09-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4267883B2 (ja) | 液晶表示ユニット | |
KR101217372B1 (ko) | 전류 공진형 방전관용 인버터 회로 | |
KR20060084396A (ko) | 방전 램프의 구동을 위한 dc/ac 전력 변환을 위한 방법및 장치 | |
JP2006204048A (ja) | 直列共振形コンバータ | |
JP3690601B2 (ja) | インバータトランス及びインバータ回路 | |
JP3905868B2 (ja) | 放電管用インバータ回路 | |
US6376999B1 (en) | Electronic ballast employing a startup transient voltage suppression circuit | |
JP4536145B2 (ja) | 液晶表示ユニット | |
JP4574641B2 (ja) | 液晶表示ユニット | |
US7304441B2 (en) | Method and apparatus for driving discharge lamps in a floating configuration | |
JP4423648B2 (ja) | 放電灯点灯装置 | |
JP4993548B2 (ja) | 自励式インバータ駆動回路 | |
KR100407973B1 (ko) | 모니터의 인버터 시스템 보호회로 | |
WO2007052514A1 (ja) | 放電灯点灯装置 | |
US6693804B2 (en) | Switching power supply circuit | |
JP4479918B2 (ja) | 放電灯点灯装置 | |
JP2007200891A (ja) | 放電管用駆動回路およびその制御方法 | |
JP2005142458A (ja) | 巻線型トランス及びこの巻線型トランスを使用した電源装置 | |
JP2002305881A (ja) | インバータ回路 | |
Xianxin | FUSE BURNOUT DUE TO GATE DRIVE CIRCUIT PARASITIC RINGING IN DC/DC CONVERTERS. | |
JPH10312893A (ja) | インバータ装置 | |
JP5019503B2 (ja) | 放電灯点灯装置 | |
JP2008041249A (ja) | 放電灯点灯装置 | |
JP3268672B2 (ja) | インバータ駆動回路 | |
JPS62229791A (ja) | 放電灯点灯装置の点灯方式 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070427 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A711 Effective date: 20090929 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20090929 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100119 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100305 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100413 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100614 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20100810 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20100818 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130827 Year of fee payment: 3 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |