JP2003050565A - Liquid crystal display system, display signal supply device, and liquid crystal display device - Google Patents
Liquid crystal display system, display signal supply device, and liquid crystal display deviceInfo
- Publication number
- JP2003050565A JP2003050565A JP2001188713A JP2001188713A JP2003050565A JP 2003050565 A JP2003050565 A JP 2003050565A JP 2001188713 A JP2001188713 A JP 2001188713A JP 2001188713 A JP2001188713 A JP 2001188713A JP 2003050565 A JP2003050565 A JP 2003050565A
- Authority
- JP
- Japan
- Prior art keywords
- power
- liquid crystal
- signal
- crystal display
- display 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.)
- Pending
Links
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、画像表示応用装置
の表示部等に用いられ、コンピュータやモニター等の本
体側から表示データ、クロック信号、水平同期信号、垂
直同期信号等の制御信号が入力される液晶表示装置等に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a display unit of an image display application apparatus, and receives control signals such as display data, clock signals, horizontal synchronizing signals and vertical synchronizing signals from a main body such as a computer and a monitor. Liquid crystal display device and the like.
【０００２】[0002]
【従来の技術】液晶表示装置を構成する液晶表示パネル
は、コンピュータ等の本体側から送出されるクロック信
号、水平同期信号、垂直同期信号等の各制御信号に基づ
いて、ゲートドライバからゲートラインに順次選択電圧
が印加され、またそれに同期してソースドライバからソ
ースラインに表示データに基づく電圧を印加すること
で、画像を表示させている。2. Description of the Related Art A liquid crystal display panel constituting a liquid crystal display device is changed from a gate driver to a gate line on the basis of control signals such as a clock signal, a horizontal synchronizing signal and a vertical synchronizing signal sent from a main body of a computer or the like. An image is displayed by sequentially applying a selection voltage and applying a voltage based on display data from the source driver to the source line in synchronization with the selection voltage.
【０００３】[0003]
【発明が解決しようとする課題】ところで、表示データ
を液晶表示装置に供給するコンピュータ等の表示信号供
給装置と、液晶表示装置とは、表示信号供給装置の電源
がオフすると液晶表示装置の電源も実質上同時にオフす
るように接続されていることが多い。その場合、従来の
液晶表示パネルでは、パソコンやモニター等の本体側の
表示信号供給装置の電源をオフした際、その電源オフ時
に液晶表示パネルに表示されていた表示画像が、暫くの
間液晶表示パネルに残像として残ることがあった。これ
は、液晶表示パネルにおいて、液晶層に蓄積された電荷
が放電されるまでに数秒間掛かるために、起こる現象で
ある。By the way, a display signal supply device such as a computer for supplying display data to a liquid crystal display device, and a liquid crystal display device, the power supply of the liquid crystal display device is also turned off when the power supply of the display signal supply device is turned off. They are often connected so that they are turned off at substantially the same time. In that case, in the conventional liquid crystal display panel, when the power of the display signal supply device on the main body side such as a personal computer or a monitor is turned off, the display image displayed on the liquid crystal display panel when the power is turned off is displayed on the liquid crystal display for a while. There was a case that it remained as an afterimage on the panel. This is a phenomenon that occurs in a liquid crystal display panel because it takes several seconds until the charge accumulated in the liquid crystal layer is discharged.
【０００４】本発明は、表示データを液晶表示装置に供
給するコンピュータ等の表示信号供給装置と液晶表示装
置とが、表示信号供給装置の電源がオフすると液晶表示
装置の電源も実質上同時にオフするように接続されてい
る場合において、表示信号供給装置の電源がオフして
も、液晶表示装置の液晶表示パネルに残像を残さない液
晶表示システムと、その液晶表示システムを構成する表
示信号供給装置及び液晶表示装置とを提供することを目
的とする。According to the present invention, a display signal supply device such as a computer for supplying display data to a liquid crystal display device and the liquid crystal display device turn off the power supply of the liquid crystal display device at substantially the same time when the power supply of the display signal supply device is turned off. When the display signal supply device is turned off, the liquid crystal display system that does not leave an afterimage on the liquid crystal display panel of the liquid crystal display device, the display signal supply device that constitutes the liquid crystal display system, and A liquid crystal display device is provided.
【０００５】[0005]
【課題を解決するための手段】第１の本発明（請求項１
に対応）は、表示信号供給装置と、液晶表示装置とを備
えた液晶表示システムであって、前記表示信号供給装置
の電源がオフすると、前記液晶表示装置の電源も実質上
同時にオフするように、前記液晶表示装置と前記表示信
号供給装置とが接続されており、前記表示信号供給装置
は、前記液晶表示装置に表示信号を供給する表示信号供
給手段と、外部から電源をオフする指示を受け付ける電
源オフ指示受付手段と、その電源オフ指示受付手段が前
記電源をオフする指示を受け付けた場合、その受け付け
たタイミングから所定時間が経過する前に、前記液晶表
示装置の電源がオフされることを前もって知らせる電源
オフ予告信号を前記液晶表示装置に供給する電源オフ予
告信号供給手段とを有し、前記電源オフ指示受付手段が
前記電源をオフする指示を受け付けた場合、その受け付
けたタイミングから前記所定時間が経過した後に実際に
電源をオフし、前記液晶表示装置は、共通電極、複数の
画素電極、及び液晶層を有する液晶表示パネルと、前記
表示信号供給装置からの前記表示信号を受け付ける表示
信号受付手段と、その表示信号受付手段が受け付けた前
記表示信号に基づいて、前記複数の各画素電極に所定の
電圧を印加する電圧印加手段と、前記表示信号供給装置
からの前記電源オフ予告信号を受け付ける電源オフ予告
信号受付手段と、その電源オフ予告信号受付手段が前記
電源オフ予告信号を受け付けた場合、前記表示信号受付
手段が受け付けた前記表示信号にかかわらず、前記複数
の画素電極の全部又は一部と前記共通電極とを実質上同
一の電位にする制御手段とを有する、液晶表示システム
である。[Means for Solving the Problems] The first invention (Claim 1)
Is a liquid crystal display system including a display signal supply device and a liquid crystal display device. When the power supply of the display signal supply device is turned off, the power supply of the liquid crystal display device is also turned off substantially at the same time. The liquid crystal display device and the display signal supply device are connected to each other, and the display signal supply device receives a display signal supply means for supplying a display signal to the liquid crystal display device and an instruction to turn off the power supply from the outside. When the power-off instruction receiving means and the power-off instruction receiving means receive the instruction to turn off the power, the power of the liquid crystal display device is turned off before a predetermined time elapses from the received timing. A power-off warning signal supplying means for supplying a power-off warning signal to the liquid crystal display device, the power-off instruction receiving means turning off the power. When receiving the instruction, the power is actually turned off after the predetermined time has passed from the received timing, and the liquid crystal display device includes a liquid crystal display panel having a common electrode, a plurality of pixel electrodes, and a liquid crystal layer, and Display signal receiving means for receiving the display signal from the display signal supply device, and voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes based on the display signal received by the display signal receiving means, Power-off notice signal receiving means for receiving the power-off notice signal from the display signal supply device, and, when the power-off notice signal receiving means receives the power-off notice signal, the display received by the display signal receiving means. Regardless of the signal, it has control means for setting all or part of the plurality of pixel electrodes and the common electrode to substantially the same potential. It is a liquid crystal display system.
【０００６】第２の本発明（請求項２に対応）は、液晶
表示装置に表示信号を供給する表示信号供給手段と、外
部から電源をオフする指示を受け付ける電源オフ指示受
付手段とを備え、その電源オフ指示受付手段が前記電源
をオフする指示を受け付けた場合、その受け付けたタイ
ミングから所定時間が経過した後に実際に電源をオフす
る表示信号供給装置において、その表示信号供給装置の
電源がオフすると、前記液晶表示装置の電源も実質上同
時にオフするように、前記液晶表示装置と前記表示信号
供給装置とが接続されており、前記電源オフ指示受付手
段が前記電源をオフする指示を受け付けた場合、その受
け付けたタイミングから前記所定時間が経過する前に、
前記液晶表示装置の電源がオフされることを前もって知
らせる電源オフ予告信号を前記液晶表示装置に供給する
電源オフ予告信号供給手段をさらに備えた表示信号供給
装置であって、前記液晶表示装置が、共通電極、複数の
画素電極、及び液晶層を有する液晶表示パネルと、前記
表示信号供給装置からの前記表示信号を受け付ける表示
信号受付手段と、その表示信号受付手段が受け付けた前
記表示信号に基づいて、前記複数の各画素電極に所定の
電圧を印加する電圧印加手段と、前記表示信号供給装置
からの前記電源オフ予告信号を受け付ける電源オフ予告
信号受付手段と、その電源オフ予告信号受付手段が前記
電源オフ予告信号を受け付けた場合、前記表示信号受付
手段が受け付けた前記表示信号にかかわらず、前記複数
の画素電極の全部又は一部と前記共通電極とを実質上同
一の電位にする制御手段とを備えた、表示信号供給装置
である。A second aspect of the present invention (corresponding to claim 2) comprises a display signal supplying means for supplying a display signal to the liquid crystal display device, and a power-off instruction receiving means for receiving an instruction to turn off the power from the outside. When the power-off instruction receiving means receives the instruction to turn off the power, in the display signal supply device that actually turns off the power after a predetermined time has passed from the received timing, the power of the display signal supply device is turned off. Then, the liquid crystal display device and the display signal supply device are connected so that the power source of the liquid crystal display device is also turned off substantially at the same time, and the power-off instruction receiving means receives the instruction to turn off the power source. In that case, before the predetermined time elapses from the received timing,
A display signal supply device further comprising a power-off notice signal supply means for supplying to the liquid-crystal display device a power-off notice signal that notifies the liquid-crystal display device that the power is turned off in advance, wherein the liquid-crystal display device comprises: A liquid crystal display panel having a common electrode, a plurality of pixel electrodes, and a liquid crystal layer, display signal receiving means for receiving the display signal from the display signal supply device, and based on the display signal received by the display signal receiving means. A voltage application means for applying a predetermined voltage to each of the plurality of pixel electrodes, a power-off warning signal receiving means for receiving the power-off warning signal from the display signal supply device, and a power-off warning signal receiving means for the power-off warning signal. When the power-off notice signal is received, all of the plurality of pixel electrodes are irrespective of the display signal received by the display signal receiving means. Has a control means for the said common electrode and a portion substantially in the same potential, which is a display signal supply apparatus.
【０００７】第３の本発明（請求項３に対応）は、共通
電極、複数の画素電極、及び液晶層を有する液晶表示パ
ネルと、表示信号供給装置からの表示信号を受け付ける
表示信号受付手段と、その表示信号受付手段が受け付け
た前記表示信号に基づいて、前記複数の各画素電極に所
定の電圧を印加する電圧印加手段と、前記表示信号供給
装置からの前記電源オフ予告信号を受け付ける電源オフ
予告信号受付手段と、その電源オフ予告信号受付手段が
前記電源オフ予告信号を受け付けた場合、前記表示信号
受付手段が受け付けた前記表示信号にかかわらず、前記
複数の画素電極の全部又は一部と前記共通電極とを実質
上同一の電位にする制御手段とを備えた液晶表示装置で
あって、前記表示信号供給装置の電源がオフすると、前
記液晶表示装置の電源も実質上同時にオフするように、
前記液晶表示装置と前記表示信号供給装置とが接続され
ており、前記表示信号供給装置が、前記液晶表示装置に
前記表示信号を供給する表示信号供給手段と、外部から
電源をオフする指示を受け付ける電源オフ指示受付手段
と、その電源オフ指示受付手段が前記電源をオフする指
示を受け付けた場合、その受け付けたタイミングから所
定時間が経過する前に、前記液晶表示装置の電源がオフ
されることを前もって知らせる電源オフ予告信号を前記
液晶表示装置に供給する電源オフ予告信号供給手段とを
有し、前記電源オフ指示受付手段が前記電源をオフする
指示を受け付けた場合、その受け付けたタイミングから
前記所定時間が経過した後に実際に電源をオフする、液
晶表示装置である。A third aspect of the present invention (corresponding to claim 3) is a liquid crystal display panel having a common electrode, a plurality of pixel electrodes, and a liquid crystal layer, and a display signal receiving means for receiving a display signal from a display signal supply device. A voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes based on the display signal received by the display signal receiving means, and a power-off for receiving the power-off notice signal from the display signal supply device When the notice signal receiving unit and the power-off notice signal receiving unit receive the power-off notice signal, all or a part of the plurality of pixel electrodes may be displayed regardless of the display signal received by the display signal receiving unit. A liquid crystal display device comprising: a control means for setting the common electrode to substantially the same potential, wherein the liquid crystal display device is configured to operate when the power supply of the display signal supply device is turned off. Sources also to turn off substantially simultaneously,
The liquid crystal display device and the display signal supply device are connected to each other, and the display signal supply device receives a display signal supply means for supplying the display signal to the liquid crystal display device and an instruction to turn off the power supply from the outside. When the power-off instruction receiving means and the power-off instruction receiving means receive the instruction to turn off the power, the power of the liquid crystal display device is turned off before a predetermined time elapses from the received timing. A power-off notice signal supplying means for supplying a power-off notice signal to the liquid crystal display device to notify in advance, and when the power-off instruction receiving means receives an instruction to turn off the power, the predetermined timing is given from the received timing. It is a liquid crystal display device in which the power is actually turned off after a lapse of time.
【０００８】第４の本発明（請求項４に対応）は、前記
同一の電位とは零電位を意味する第３の本発明に記載の
液晶表示装置である。A fourth aspect of the present invention (corresponding to claim 4) is the liquid crystal display device according to the third aspect of the present invention, wherein the same potential means zero potential.
【０００９】第５の本発明（請求項５に対応）は、前記
制御手段が、垂直同期信号のブランキング期間に、前記
複数の画素電極の全部又は一部と前記共通電極とを実質
上同一の電位にする第３又は第４の本発明に記載の液晶
表示装置である。According to a fifth aspect of the present invention (corresponding to claim 5), the control means causes all or some of the plurality of pixel electrodes and the common electrode to be substantially the same during a blanking period of a vertical synchronizing signal. The liquid crystal display device according to the third or fourth aspect of the present invention, in which the potential is set to.
【００１０】第６の本発明（請求項６に対応）は、第１
の本発明に記載の液晶表示システムの、前記表示信号供
給装置における、前記液晶表示装置に表示信号を供給す
る表示信号供給手段と、外部から電源をオフする指示を
受け付ける電源オフ指示受付手段と、その電源オフ指示
受付手段が前記電源をオフする指示を受け付けた場合、
その受け付けたタイミングから所定時間が経過する前
に、前記液晶表示装置の電源がオフされることを前もっ
て知らせる電源オフ予告信号を前記液晶表示装置に供給
する電源オフ予告信号供給手段と、前記液晶表示装置に
おける、前記表示信号供給装置からの前記表示信号を受
け付ける表示信号受付手段と、その表示信号受付手段が
受け付けた前記表示信号に基づいて、前記液晶表示パネ
ルの複数の各画素電極に所定の電圧を印加する電圧印加
手段と、前記表示信号供給装置からの前記電源オフ予告
信号を受け付ける電源オフ予告信号受付手段と、その電
源オフ予告信号受付手段が前記電源オフ予告信号を受け
付けた場合、前記表示信号受付手段が受け付けた前記表
示信号にかかわらず、前記複数の画素電極の全部又は一
部と前記共通電極とを実質上同一の電位にする制御手段
との全部又は一部としてコンピュータを機能させるため
のプログラムである。A sixth aspect of the present invention (corresponding to claim 6) is the first aspect.
In the liquid crystal display system according to the present invention, in the display signal supply device, a display signal supply means for supplying a display signal to the liquid crystal display device, and a power-off instruction reception means for receiving an instruction to turn off the power from the outside, When the power-off instruction receiving means receives an instruction to turn off the power,
Power-off notice signal supply means for supplying the liquid-crystal display device with a power-off notice signal in advance that the power of the liquid crystal display device will be turned off before a predetermined time has elapsed from the received timing, and the liquid crystal display. In the device, based on the display signal receiving unit that receives the display signal from the display signal supply unit and the display signal received by the display signal receiving unit, a predetermined voltage is applied to each of the plurality of pixel electrodes of the liquid crystal display panel. A voltage applying means for applying a power-off notice signal, a power-off notice signal receiving means for receiving the power-off notice signal from the display signal supplying device, and a display when the power-off notice signal receiving means receives the power-off notice signal. Regardless of the display signal received by the signal receiving means, all or part of the plurality of pixel electrodes and the common electrode Is a program for causing a computer to function as all or part of the control means to substantially the same potential.
【００１１】第７の本発明（請求項７に対応）は、第２
の本発明に記載の表示信号供給装置の、液晶表示装置に
表示信号を供給する表示信号供給手段と、外部から電源
をオフする指示を受け付ける電源オフ指示受付手段と、
その電源オフ指示受付手段が前記電源をオフする指示を
受け付けた場合、その受け付けたタイミングから前記所
定時間が経過する前に、前記液晶表示装置の電源がオフ
されることを前もって知らせる電源オフ予告信号を前記
液晶表示装置に供給する電源オフ予告信号供給手段との
全部又は一部としてコンピュータを機能させるためのプ
ログラムである。A seventh aspect of the present invention (corresponding to claim 7) is the second aspect.
In the display signal supply device according to the present invention, a display signal supply means for supplying a display signal to the liquid crystal display device, a power-off instruction receiving means for receiving an instruction to turn off the power from the outside,
When the power-off instruction receiving means receives the instruction to turn off the power, a power-off notice signal that informs in advance that the power of the liquid crystal display device will be turned off before the predetermined time elapses from the received timing. Is a program for causing a computer to function as all or a part of a power-off notice signal supplying means for supplying to the liquid crystal display device.
【００１２】第８の本発明（請求項８に対応）は、第３
の本発明に記載の液晶表示装置の、表示信号供給装置か
らの表示信号を受け付ける表示信号受付手段と、その表
示信号受付手段が受け付けた前記表示信号に基づいて、
前記液晶表示パネルの複数の各画素電極に所定の電圧を
印加する電圧印加手段と、前記表示信号供給装置からの
前記電源オフ予告信号を受け付ける電源オフ予告信号受
付手段と、その電源オフ予告信号受付手段が前記電源オ
フ予告信号を受け付けた場合、前記表示信号受付手段が
受け付けた前記表示信号にかかわらず、前記複数の画素
電極の全部又は一部と前記共通電極とを実質上同一の電
位にする制御手段との全部又は一部としてコンピュータ
を機能させるためのプログラムである。An eighth aspect of the present invention (corresponding to claim 8) is the third aspect.
In the liquid crystal display device according to the present invention, based on the display signal received by the display signal receiving means for receiving the display signal from the display signal supply device, the display signal receiving means,
Voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes of the liquid crystal display panel, power off advance notice signal receiving means for receiving the power off advance notice signal from the display signal supply device, and power off advance notice signal reception When the means receives the power-off notice signal, all or part of the plurality of pixel electrodes and the common electrode are set to substantially the same potential regardless of the display signal received by the display signal receiving means. It is a program that causes a computer to function as all or part of the control means.
【００１３】第９の本発明（請求項９に対応）は、第１
の本発明に記載の液晶表示システムの、前記表示信号供
給装置における、前記液晶表示装置に表示信号を供給す
る表示信号供給手段と、外部から電源をオフする指示を
受け付ける電源オフ指示受付手段と、その電源オフ指示
受付手段が前記電源をオフする指示を受け付けた場合、
その受け付けたタイミングから所定時間が経過する前
に、前記液晶表示装置の電源がオフされることを前もっ
て知らせる電源オフ予告信号を前記液晶表示装置に供給
する電源オフ予告信号供給手段と、前記液晶表示装置に
おける、前記表示信号供給装置からの前記表示信号を受
け付ける表示信号受付手段と、その表示信号受付手段が
受け付けた前記表示信号に基づいて、前記液晶表示パネ
ルの複数の各画素電極に所定の電圧を印加する電圧印加
手段と、前記表示信号供給装置からの前記電源オフ予告
信号を受け付ける電源オフ予告信号受付手段と、その電
源オフ予告信号受付手段が前記電源オフ予告信号を受け
付けた場合、前記表示信号受付手段が受け付けた前記表
示信号にかかわらず、前記複数の画素電極の全部又は一
部と前記共通電極とを実質上同一の電位にする制御手段
との全部又は一部としてコンピュータを機能させるため
のプログラムを担持した媒体であって、コンピュータに
より処理可能な媒体である。A ninth aspect of the present invention (corresponding to claim 9) is the first aspect.
In the liquid crystal display system according to the present invention, in the display signal supply device, a display signal supply means for supplying a display signal to the liquid crystal display device, and a power-off instruction reception means for receiving an instruction to turn off the power from the outside, When the power-off instruction receiving means receives an instruction to turn off the power,
Power-off notice signal supply means for supplying the liquid-crystal display device with a power-off notice signal in advance that the power of the liquid crystal display device will be turned off before a predetermined time has elapsed from the received timing, and the liquid crystal display. In the device, based on the display signal receiving unit that receives the display signal from the display signal supply unit and the display signal received by the display signal receiving unit, a predetermined voltage is applied to each of the plurality of pixel electrodes of the liquid crystal display panel. A voltage applying means for applying a power-off notice signal, a power-off notice signal receiving means for receiving the power-off notice signal from the display signal supplying device, and a display when the power-off notice signal receiving means receives the power-off notice signal. Regardless of the display signal received by the signal receiving means, all or part of the plurality of pixel electrodes and the common electrode A carrying medium a program for causing a computer to function as all or part of the control means to substantially the same potential, a medium can be processed by a computer.
【００１４】第１０の本発明（請求項１０に対応）は、
第２の本発明に記載の表示信号供給装置の、液晶表示装
置に表示信号を供給する表示信号供給手段と、外部から
電源をオフする指示を受け付ける電源オフ指示受付手段
と、その電源オフ指示受付手段が前記電源をオフする指
示を受け付けた場合、その受け付けたタイミングから前
記所定時間が経過する前に、前記液晶表示装置の電源が
オフされることを前もって知らせる電源オフ予告信号を
前記液晶表示装置に供給する電源オフ予告信号供給手段
との全部又は一部としてコンピュータを機能させるため
のプログラムを担持した媒体であって、コンピュータに
より処理可能な媒体である。The tenth invention of the present invention (corresponding to claim 10) is
In the display signal supply device according to the second aspect of the present invention, display signal supply means for supplying a display signal to the liquid crystal display device, power-off instruction reception means for receiving an instruction to turn off the power from the outside, and power-off instruction reception thereof. When the means receives the instruction to turn off the power source, the liquid crystal display device is provided with a power off advance notice signal that informs in advance that the power source of the liquid crystal display device is turned off before the predetermined time elapses from the received timing. It is a medium that carries a program for causing a computer to function as all or a part of the power-off notice signal supplying means that is supplied to the computer, and is a medium that can be processed by the computer.
【００１５】第１１の本発明（請求項１１に対応）は、
第３の本発明に記載の液晶表示装置の、表示信号供給装
置からの表示信号を受け付ける表示信号受付手段と、そ
の表示信号受付手段が受け付けた前記表示信号に基づい
て、前記液晶表示パネルの複数の各画素電極に所定の電
圧を印加する電圧印加手段と、前記表示信号供給装置か
らの前記電源オフ予告信号を受け付ける電源オフ予告信
号受付手段と、その電源オフ予告信号受付手段が前記電
源オフ予告信号を受け付けた場合、前記表示信号受付手
段が受け付けた前記表示信号にかかわらず、前記複数の
画素電極の全部又は一部と前記共通電極とを実質上同一
の電位にする制御手段との全部又は一部としてコンピュ
ータを機能させるためのプログラムを担持した媒体であ
って、コンピュータにより処理可能な媒体である。The eleventh invention (corresponding to claim 11) is
In the liquid crystal display device according to the third aspect of the present invention, display signal receiving means for receiving a display signal from the display signal supplying device, and a plurality of liquid crystal display panels based on the display signal received by the display signal receiving means. Of voltage application means for applying a predetermined voltage to each pixel electrode, power-off notice signal receiving means for receiving the power-off notice signal from the display signal supply device, and power-off notice signal receiving means for the power-off notice signal. When a signal is received, regardless of the display signal received by the display signal receiving means, all or part of the plurality of pixel electrodes and the control means for setting the common electrode to substantially the same potential or It is a medium that carries a program for causing a computer to function as a part, and is a medium that can be processed by a computer.
【００１６】本願において開示される発明のうち、一例
を簡単に説明すれば、下記の通りである。表示データを
液晶表示装置に供給するコンピュータ等の表示信号供給
装置と液晶表示装置とが、表示信号供給装置の電源がオ
フすると液晶表示装置の電源も実質上同時にオフするよ
うに接続されている場合において、表示信号供給装置の
電源がオフする前に、すなわち液晶表示装置の電源がオ
フする前に、表示信号供給装置が電源オフ予告信号を液
晶表示装置に供給し、液晶表示装置において、少なくと
も１フレーム期間液晶層を挟む画素電極と共通電極を同
電位にし、例えば零電位にし、液晶層に電圧が印加され
ないようにして、電源オフ時に残像が液晶表示パネルに
残らないようにする。The following is a brief description of an example of the invention disclosed in the present application. A display signal supply device such as a computer for supplying display data to the liquid crystal display device and the liquid crystal display device are connected so that the power supply of the display signal supply device is also turned off substantially at the same time. In the above, before the display signal supply device is turned off, that is, before the liquid crystal display device is turned off, the display signal supply device supplies a power-off notice signal to the liquid crystal display device, and at least 1 The pixel electrode and the common electrode sandwiching the liquid crystal layer in the frame period are set to the same potential, for example, zero potential so that no voltage is applied to the liquid crystal layer so that an afterimage does not remain on the liquid crystal display panel when the power is turned off.
【００１７】[0017]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１８】図１は、本発明の実施の形態における液晶
表示装置を表す。一般的にソースドライバ３には、パソ
コンやモニター等の表示信号供給装置より送信される表
示データに応じた電圧を液晶層に印加するため、階調補
正用にソースドライバ３の外部から階調補正用の電圧を
供給しており、通常γ補正用電圧と呼ばれる。通常動作
時は、γ補正電圧生成回路７により階調補正用電圧を生
成し、ソースドライバ３に供給することで、ソースドラ
イバ３は表示データに応じた電圧を液晶層に印加するこ
とができる。FIG. 1 shows a liquid crystal display device according to an embodiment of the present invention. In general, the source driver 3 applies a voltage according to display data transmitted from a display signal supply device such as a personal computer or a monitor to the liquid crystal layer, so that gradation correction is performed from the outside of the source driver 3 for gradation correction. Voltage is supplied for this purpose and is usually called a γ correction voltage. During normal operation, the γ correction voltage generation circuit 7 generates a gradation correction voltage and supplies it to the source driver 3, so that the source driver 3 can apply a voltage according to display data to the liquid crystal layer.
【００１９】ここで、パソコンやモニター等の表示信号
供給装置は、図６に示すように、液晶表示装置にテキス
トデータや映像データ等の表示信号を供給する表示信号
供給手段６１と、外部から電源をオフする指示を受け付
ける電源オフ指示受付手段６２と、その電源オフ指示受
付手段６２が電源をオフする指示を受け付けた場合、そ
の受け付けたタイミングから所定時間が経過する前に、
液晶表示装置の電源がオフされることを前もって知らせ
る電源オフ予告信号を液晶表示装置に供給する電源オフ
予告信号供給手段６３とを備えている。そして、表示信
号供給装置は、電源オフ指示受付手段６２が電源をオフ
する指示を受け付けた場合、その受け付けたタイミング
から上記の所定時間が経過した後に実際に電源をオフす
るのである。さらに、表示信号供給装置の電源がオフす
ると、液晶表示装置の電源も実質上同時にオフするよう
に、上記の表示信号供給装置と液晶表示装置とは接続さ
れている。Here, as shown in FIG. 6, a display signal supply device such as a personal computer or a monitor is provided with a display signal supply means 61 for supplying a display signal such as text data or video data to a liquid crystal display device, and a power supply from the outside. When a power-off instruction receiving unit 62 that receives an instruction to turn off the power and an instruction to turn off the power are received by the power-off instruction receiving unit 62, before a predetermined time elapses from the received timing,
The liquid crystal display device is provided with a power off advance notice signal supply means 63 for supplying a power off advance notice signal to the liquid crystal display device in advance to inform the liquid crystal display device that the power is off. Then, when the power-off instruction receiving means 62 receives the instruction to turn off the power, the display signal supply device actually turns off the power after the above-described predetermined time has elapsed from the received timing. Further, the display signal supply device and the liquid crystal display device are connected so that when the power supply of the display signal supply device is turned off, the power supplies of the liquid crystal display device are also turned off substantially at the same time.
【００２０】そして、表示信号供給装置が例えばパソコ
ンであって、ＷＩＮＤＯＷＳ（登録商標）の終了をする
ように、ユーザがマウス等を用いて表示信号供給装置に
指示した場合、その指示は電源オフ指示受付手段６２に
受け付けられ、そうすると、電源オフ予告信号供給手段
６３は、ＷＩＮＤＯＷＳの終了の指示がなされたタイミ
ングから所定時間が経過する前に、液晶表示装置の電源
がオフされることを前もって知らせる電源オフ予告信号
を液晶表示装置に供給する。ここでは、電源オフ予告信
号を「Ｄ−ｏｆｆ信号」と呼ぶ。例えば、電源オフ予告
信号供給手段６３は、電源がオフする少なくとも１フレ
ーム前に液晶表示装置が電源オフを検出できるように、
Ｄ−ｏｆｆ信号を液晶表示装置に供給する。When the display signal supply device is, for example, a personal computer and the user instructs the display signal supply device to terminate the WINDOWS (registered trademark) by using a mouse or the like, the instruction is a power-off instruction. The power-off notice signal supplying means 63 receives the power, and then the power-off notice signal supplying means 63 notifies the power-off of the liquid crystal display device in advance before a predetermined time elapses from the timing when the instruction to end the WINDOWS is given. An off-warning signal is supplied to the liquid crystal display device. Here, the power off notice signal is referred to as a “D-off signal”. For example, the power-off notice signal supply means 63 allows the liquid crystal display device to detect the power-off at least one frame before the power is turned off.
The D-off signal is supplied to the liquid crystal display device.
【００２１】液晶表示装置では、パソコンやモニター等
の表示信号供給装置からのＤ−ｏｆｆ信号に基づいて、
電源がオフとなる前に少なくとも１フレーム期間、ソー
スドライバ３の階調補正用電圧をすべて零電位にするよ
うに、第１制御回路５が制御し、画素電極を順次零電位
にする。それと同時に、Ｄ−ｏｆｆ信号に基づいて、電
源がオフとなる前に少なくとも１フレーム期間、共通電
極の電位も零電位とするように、第２制御回路６が制御
する。これにより、全ての液晶層に印加される電圧を零
電位にする。そうすると、表示信号供給装置の電源がオ
フすることにより、液晶表示装置の電源も実質上同時に
オフすることになっても、液晶層には電圧が実質上かか
らないので、液晶表示装置の電源オフしても残像が残ら
ないようになる。In the liquid crystal display device, based on the D-off signal from the display signal supply device such as a personal computer or a monitor,
Before the power is turned off, the first control circuit 5 controls the gradation correction voltage of the source driver 3 to be all zero potential for at least one frame period, and sequentially sets the pixel electrodes to zero potential. At the same time, based on the D-off signal, the second control circuit 6 controls the potential of the common electrode to be zero potential for at least one frame period before the power is turned off. As a result, the voltage applied to all liquid crystal layers is set to zero potential. Then, even if the power supply of the display signal supply device is turned off and the power supply of the liquid crystal display device is also turned off substantially at the same time, since the voltage is not applied to the liquid crystal layer substantially, the power supply of the liquid crystal display device is turned off. Even afterimage does not remain.
【００２２】図２は、図１の第１制御回路５及びγ補正
用電圧生成回路７等の概略構成図である。図２に示すＶ
ＲＥＦ０（１０）からＶＲＥＦｎ−１（１３）はソース
ドライバ３の出力電圧の階調補正に使用するγ補正用電
圧である。このγ補正用電圧は通常ソースドライバ３に
は複数用意されており、ＶＲＥＦ０（１０）に階調補正
に使用する最大の電位を与え、ＶＲＥＦｎ−１（１３）
に最小電位を与えている。そして、ＶＲＥＦ１（１１）
からＶＲＥＦｎ−２（１２）には抵抗分割などを利用し
て階調補正に必要な電圧をそれぞれ与えている。FIG. 2 is a schematic configuration diagram of the first control circuit 5, the gamma correction voltage generating circuit 7 and the like shown in FIG. V shown in FIG.
REF0 (10) to VREFn-1 (13) are γ correction voltages used for gradation correction of the output voltage of the source driver 3. A plurality of γ correction voltages are usually prepared in the source driver 3, and VREF0 (10) is given the maximum potential used for gradation correction, and VREFn-1 (13) is supplied.
Is applied to the minimum potential. And VREF1 (11)
Therefore, the voltage required for gradation correction is applied to VREFn-2 (12) by using resistance division or the like.
【００２３】図２に示すように、ＶＲＥＦ０（１０）と
ＶＲＥＦｎ−１（１３）の入力に第１制御回路５として
半導体スイッチ９を設け、半導体スイッチ９を切り換え
ることで強制的にＶＲＥＦ０（１０）の電位を零電位に
する。半導体スイッチ９は、電源がオフする少なくとも
１フレーム前に切り換えることのできるＤ−ｏｆｆ信号
によって制御する。As shown in FIG. 2, a semiconductor switch 9 is provided as a first control circuit 5 at the inputs of VREF0 (10) and VREFn-1 (13), and the semiconductor switch 9 is switched to force VREF0 (10). To zero potential. The semiconductor switch 9 is controlled by a D-off signal that can be switched at least one frame before the power is turned off.
【００２４】本実施の形態では、電源がオフする前に第
１制御回路５及び第２制御回路６にＤ−ｏｆｆ信号を与
え、少なくとも１フレーム期間強制的にソースドライバ
３のすべての出力及び共通電極の電位を零電位にするこ
とで、入力データに無関係に液晶層に蓄積される電荷を
最小限（理論的には零）とすることを特徴とする。In this embodiment, the D-off signal is applied to the first control circuit 5 and the second control circuit 6 before the power is turned off, and all outputs of the source driver 3 and the common output are compulsorily applied for at least one frame period. It is characterized in that the electric charge accumulated in the liquid crystal layer is minimized (theoretically zero) regardless of the input data by setting the electric potential of the electrode to zero electric potential.
【００２５】次に、図３に第２制御回路６の構成を示
す。図３に示すように、第２制御回路６も、図２に示す
第１制御回路５と同様な構成をしており、第２制御回路
６の半導体スイッチ９も、電源がオフする少なくとも１
フレーム前に切り換えることのできるＤ−ｏｆｆ信号に
よって制御される。Next, FIG. 3 shows the configuration of the second control circuit 6. As shown in FIG. 3, the second control circuit 6 also has the same configuration as the first control circuit 5 shown in FIG. 2, and the semiconductor switch 9 of the second control circuit 6 also has at least 1 when the power is turned off.
It is controlled by the D-off signal which can be switched before the frame.
【００２６】次に、図４にＤ−ｏｆｆ信号と電源電圧と
のタイミングを表した波形を示す。図４に示すように、
電源オン時にはＤ−ｏｆｆ信号が、例えばＨｉｇｈレベ
ルとし、電源がオフされる少なくとも１フレーム期間前
にはＤ−ｏｆｆ信号がＬｏｗレベルとなるようにＤ−ｏ
ｆｆ信号を制御させる。このＤ−ｏｆｆ信号がＨｉｇｈ
レベルからＬｏｗレベルに切り換るのに同期して半導体
スイッチ９が切り換わる。これにより、ＶＲＥＦ０（１
０）、ＶＲＥＦｎ−１（１３）を零電位とすることがで
きる。Next, FIG. 4 shows a waveform representing the timing of the D-off signal and the power supply voltage. As shown in FIG.
The D-off signal is set to, for example, a high level when the power is turned on, and the D-off signal is set to a low level at least one frame period before the power is turned off.
Control the ff signal. This D-off signal is High
The semiconductor switch 9 switches in synchronization with the switching from the level to the Low level. As a result, VREF0 (1
0) and VREFn-1 (13) can be set to zero potential.
【００２７】同様に、図４に示すように、電源がオフさ
れる少なくとも１フレーム期間前にＤ−ｏｆｆ信号が切
り換わるのに同期して半導体スイッチ９が切り換る。こ
れにより、共通電極の電位を零電位にすることができ
る。ＶＲＥＦ０（１０）、ＶＲＥＦｎ−１（１３）を零
電位とすることで、ソースドライバ３の全ての出力を零
電位にすることができ、さらに共通電極の電位を零電位
にすることによって、液晶層に蓄積される電荷量を最小
限（理論的には零）にすることができる。これにより、
液晶表示パネルの電源がオフされた際に、液晶表示パネ
ルに表示されていた画像が残像として残ることはない。Similarly, as shown in FIG. 4, the semiconductor switch 9 switches in synchronization with the switching of the D-off signal at least one frame period before the power is turned off. As a result, the potential of the common electrode can be set to zero. By setting VREF0 (10) and VREFn-1 (13) to zero potential, all outputs of the source driver 3 can be set to zero potential, and further, by setting the potential of the common electrode to zero potential, the liquid crystal layer It is possible to minimize the amount of electric charge stored in (minimally, theoretically zero). This allows
When the power of the liquid crystal display panel is turned off, the image displayed on the liquid crystal display panel does not remain as an afterimage.
【００２８】なお、Ｄ−ｏｆｆ信号をＨｉｇｈレベルか
らＬｏｗレベルの変化としたが、ＬｏｗレベルからＨｉ
ｇｈレベルへの変化でも同様な制御が行えることは言う
までもない。Although the D-off signal is changed from High level to Low level, it is changed from Low level to Hi level.
Needless to say, similar control can be performed even when changing to the gh level.
【００２９】図５は、Ｄ−ｏｆｆ信号の切り換えるタイ
ミングを垂直同期信号のブランキング期間に行った場合
のタイミングを表した波形である。垂直同期信号のブラ
ンキング期間にＤ−ｏｆｆ信号を切り換えることによ
り、液晶層に印加される電位が瞬間的に切り換わる際の
電位差によって見える境界線の発生を防止することを特
徴とする。ブランキング期間に切り換える方法として
は、パソコンやモニター等の表示信号供給装置側で制御
しても構わないが、液晶表示装置側で行っても構わな
い。FIG. 5 is a waveform showing the timing when the switching timing of the D-off signal is performed during the blanking period of the vertical synchronizing signal. By switching the D-off signal during the blanking period of the vertical synchronizing signal, it is possible to prevent the occurrence of a boundary line that is visible due to the potential difference when the potential applied to the liquid crystal layer is instantaneously switched. As a method for switching to the blanking period, control may be performed on the display signal supply device side such as a personal computer or a monitor, but it may be performed on the liquid crystal display device side.
【００３０】以上のように本実施の形態によれば、パソ
コンやモニター等の表示信号供給装置側の電源をオフす
る前に少なくとも１フレーム期間、液晶表示パネルの液
晶層に蓄積される電荷量を最小限（理論的には零）にす
ることができる。これにより、液晶表示パネルの電源が
オフされた際に液晶表示パネルに表示されていた画像が
残像として残ることはない。As described above, according to the present embodiment, the amount of electric charge accumulated in the liquid crystal layer of the liquid crystal display panel for at least one frame period before turning off the power supply of the display signal supply device side such as a personal computer and a monitor. It can be minimized (theoretically zero). As a result, the image displayed on the liquid crystal display panel does not remain as an afterimage when the power of the liquid crystal display panel is turned off.
【００３１】なお、上述した実施の形態では、本発明の
液晶表示装置の、表示信号受付手段の一例としてＬＣＤ
コントローラ８を、電圧印加手段の一例としてソースド
ライバ３を、電源オフ予告信号受付手段及び制御手段の
一例として第１制御回路５及び第２制御回路６を、それ
ぞれ用いた。In the above-described embodiment, the LCD is an example of the display signal receiving means of the liquid crystal display device of the present invention.
The controller 8, the source driver 3 is used as an example of the voltage application unit, and the first control circuit 5 and the second control circuit 6 are used as an example of the power-off notice signal reception unit and the control unit.
【００３２】また、上述した実施の形態では、液晶表示
装置では、電源がオフとなる前に画素電極と共通電極の
電位を共に零電位にするとしたが、零電位にするものと
限定することはない。要するに、電源がオフとなる前に
画素電極の電位と共通電極の電位とを実質上同一の電位
にしさえすればよい。そうすると、液晶層には電圧が実
質上かからなくなり、液晶表示装置の電源オフしても残
像が残らないようになる。ここで、画素電極の電位と共
通電極の電位とを実質上同一の電位にする方法として
は、共通電極の電位を変えずに画素電極の電位を共通電
極の電位に合わせるという方法と、画素電極の電位と共
通電極の電位の両方の電位を変えて、画素電極の電位と
共通電極の電位とを実質上同一の電位にする方法とがあ
る。Further, in the above-described embodiment, in the liquid crystal display device, the potentials of the pixel electrode and the common electrode are both set to zero potential before the power is turned off, but it is not limited to setting them to zero potential. Absent. In short, it suffices that the potential of the pixel electrode and the potential of the common electrode be substantially the same before the power is turned off. Then, no voltage is applied to the liquid crystal layer, and afterimages do not remain even when the liquid crystal display device is powered off. Here, as a method of making the electric potential of the pixel electrode and the electric potential of the common electrode substantially the same, a method of adjusting the electric potential of the pixel electrode to the electric potential of the common electrode without changing the electric potential of the common electrode, There is a method in which both the potential of the pixel electrode and the potential of the common electrode are changed so that the potential of the pixel electrode and the potential of the common electrode are substantially the same.
【００３３】なお、上記の電源がオフとなる前に画素電
極の電位を共通電極の電位に合わせる場合の液晶表示装
置の構成を、図７に示すような構成とすることができ
る。その図７に示す液晶表示装置は、図１の第２制御回
路６を備えていない点が図１の液晶表示装置と異なる。
それは共通電極の電位を変えずに、画素電極の電位を共
通電極の電位に合わせる方法を用いているからである。The configuration of the liquid crystal display device in the case where the potential of the pixel electrode is adjusted to the potential of the common electrode before the power is turned off can be configured as shown in FIG. The liquid crystal display device shown in FIG. 7 is different from the liquid crystal display device of FIG. 1 in that the second control circuit 6 of FIG. 1 is not provided.
This is because the method of adjusting the potential of the pixel electrode to the potential of the common electrode is used without changing the potential of the common electrode.
【００３４】また、図７に示す液晶表示装置における制
御回路５及びγ補正用電圧生成回路７等の構成を、図８
に示すような構成とすることができる。または、図９に
示すような構成とすることができる。図９において、ソ
ースドライバ３に最大の電圧を与えるＶＲＥＦ０（１
０）にはアナログ電圧端子１７を介してアナログ電源電
圧が、ソースドライバ３に最小の電圧を与えるＶＲＥＦ
ｎ（１３）にはグランドが、それぞれ抵抗Ｒ１、Ｒｎを
介して接続されている。The configuration of the control circuit 5 and the γ correction voltage generating circuit 7 in the liquid crystal display device shown in FIG. 7 is shown in FIG.
It can be configured as shown in. Alternatively, the configuration as shown in FIG. 9 can be adopted. In FIG. 9, VREF0 (1 that gives the maximum voltage to the source driver 3
0), the analog power supply voltage via the analog voltage terminal 17 supplies VREF that gives the minimum voltage to the source driver 3.
A ground is connected to n (13) via resistors R1 and Rn, respectively.
【００３５】また、本発明は、上述した本発明の液晶表
示システム、表示信号供給装置、及び液晶表示装置の全
部又は一部の手段の機能をコンピュータにより実行させ
るためのプログラムであって、コンピュータと協働して
動作するプログラムである。Further, the present invention is a program for causing a computer to execute the functions of all or a part of the liquid crystal display system, the display signal supply device, and the liquid crystal display device of the present invention described above. It is a program that works together.
【００３６】また、本発明は、上述した本発明の液晶表
示システム、表示信号供給装置、及び液晶表示装置の全
部又は一部の手段の機能をコンピュータにより実行させ
るためのプログラムを担持した媒体であり、コンピュー
タにより読み取り可能且つ、読み取られた前記プログラ
ムが前記コンピュータと協動して前記機能を実行する媒
体である。Further, the present invention is a medium carrying a program for causing a computer to execute the functions of all or part of the liquid crystal display system, the display signal supply device, and the liquid crystal display device of the present invention described above. Is a medium that can be read by a computer, and in which the read program executes the function in cooperation with the computer.
【００３７】なお、本発明の一部の手段とは、それらの
複数の手段の内の、幾つかの手段を意味し、あるいは、
一つの手段の内の、一部の機能を意味するものである。Some of the means of the present invention means some of the plurality of means, or
It means a part of the functions of one means.
【００３８】また、本発明のプログラムを記録した、コ
ンピュータに読みとり可能な記録媒体も本発明に含まれ
る。A computer-readable recording medium in which the program of the present invention is recorded is also included in the present invention.
【００３９】また、本発明のプログラムの一利用形態
は、コンピュータにより読み取り可能な記録媒体に記録
され、コンピュータと協働して動作する態様であっても
良い。Further, one usage form of the program of the present invention may be a mode in which the program is recorded in a computer-readable recording medium and operates in cooperation with the computer.
【００４０】また、本発明のプログラムの一利用形態
は、伝送媒体中を伝送し、コンピュータにより読みとら
れ、コンピュータと協働して動作する態様であっても良
い。Further, one usage form of the program of the present invention may be a mode in which the program is transmitted through a transmission medium, read by a computer, and operates in cooperation with the computer.
【００４１】また、記録媒体としては、ＲＯＭ等が含ま
れ、伝送媒体としては、インターネット等の伝送媒体、
光・電波・音波等が含まれる。The recording medium includes a ROM and the like, and the transmission medium includes the transmission medium such as the Internet,
Light, radio waves, sound waves, etc. are included.
【００４２】また、上述した本発明のコンピュータは、
ＣＰＵ等の純然たるハードウェアに限らず、ファームウ
ェアや、ＯＳ、更に周辺機器を含むものであっても良
い。Further, the computer of the present invention described above is
The hardware is not limited to pure hardware such as a CPU, and may include firmware, an OS, and peripheral devices.
【００４３】なお、以上説明した様に、本発明の構成
は、ソフトウェア的に実現しても良いし、ハードウェア
的に実現しても良い。As described above, the configuration of the present invention may be realized by software or hardware.
【００４４】[0044]
【発明の効果】以上説明したところから明らかなよう
に、本発明は、表示データを液晶表示装置に供給するコ
ンピュータ等の表示信号供給装置と液晶表示装置とが、
表示信号供給装置の電源がオフすると液晶表示装置の電
源も実質上同時にオフするように接続されている場合に
おいて、表示信号供給装置の電源がオフしても、液晶表
示装置の液晶表示パネルに残像を残さない液晶表示シス
テムと、その液晶表示システムを構成する表示信号供給
装置及び液晶表示装置とを提供することができる。As is apparent from the above description, according to the present invention, a display signal supply device such as a computer for supplying display data to a liquid crystal display device and a liquid crystal display device are provided.
When the power supply of the display signal supply device is turned off and the power supply of the liquid crystal display device is also turned off at substantially the same time, even if the power supply of the display signal supply device is turned off, the residual image is displayed on the liquid crystal display panel of the liquid crystal display device. It is possible to provide a liquid crystal display system that does not leave the above, and a display signal supply device and a liquid crystal display device that constitute the liquid crystal display system.
【図１】本発明の実施の形態における液晶表示装置の概
略構成を示すブロック図である。FIG. 1 is a block diagram showing a schematic configuration of a liquid crystal display device according to an embodiment of the present invention.
【図２】図１に示す第１制御回路５の概略構成図であ
る。FIG. 2 is a schematic configuration diagram of a first control circuit 5 shown in FIG.
【図３】図１に示す第２制御回路６の概略構成図であ
る。FIG. 3 is a schematic configuration diagram of a second control circuit 6 shown in FIG.
【図４】図１の液晶表示装置の電源がオフされるときの
電源波形と図２及び図３の半導体スイッチ９を制御する
制御信号とのタイミング波形図である。FIG. 4 is a timing waveform diagram of a power supply waveform when the liquid crystal display device of FIG. 1 is turned off and a control signal for controlling the semiconductor switch 9 of FIGS. 2 and 3.
【図５】図２、図３及び図４に図示されたＤ−ｏｆｆ信
号を垂直同期信号のブランキング期間に切り換えた場合
のタイミング波形図である。5 is a timing waveform diagram when the D-off signal shown in FIGS. 2, 3 and 4 is switched to a blanking period of a vertical synchronization signal.
【図６】本発明の実施の形態における表示信号供給装置
の概略構成を示すブロック図である。FIG. 6 is a block diagram showing a schematic configuration of a display signal supply device according to an embodiment of the present invention.
【図７】本発明の実施の形態における液晶表示装置の概
略構成を示すブロック図である。FIG. 7 is a block diagram showing a schematic configuration of a liquid crystal display device according to an embodiment of the present invention.
【図８】図７に示す制御回路５等の概略構成図である。8 is a schematic configuration diagram of a control circuit 5 and the like shown in FIG.
【図９】図７に示す制御回路５等の概略構成図である。9 is a schematic configuration diagram of a control circuit 5 and the like shown in FIG.
１…液晶表示パネル ２…ゲートドライバ ３…ソースドライバ ４…電源供給部 ５…第１制御回路 ６…第２制御回路 ７…γ補正用電圧生成回路 ８…ＬＣＤコントローラ ９…半導体スイッチ １０…ＶＲＥＦ０ １１…ＶＲＥＦ １２…ＶＲＥＦｎ−２ １３…ＶＲＥＦｎ−１ １４…アナログ電圧端子 １５…共通電極電位端子 １６…アナログ電圧端子 Ｓ１、Ｓ２、Ｓｍ…ソースライン 1 ... Liquid crystal display panel 2 ... Gate driver 3 ... Source driver 4 ... Power supply unit 5 ... First control circuit 6 ... Second control circuit 7 ... γ correction voltage generation circuit 8 ... LCD controller 9 ... Semiconductor switch 10 ... VREF0 11 ... VREF 12 ... VREFn-2 13 ... VREFn-1 14 ... Analog voltage terminal 15 ... Common electrode potential terminal 16 ... Analog voltage terminal S1, S2, Sm ... Source line
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2H093 NC49 NC50 NC58 ND12 5C006 AA01 AF44 AF67 BB15 BC03 BC12 BF16 BF42 EC01 FA22 FA34 5C080 AA10 BB05 DD03 EE29 FF03 FF11 JJ02 JJ04 JJ07 ─────────────────────────────────────────────────── ─── Continued front page F-term (reference) 2H093 NC49 NC50 NC58 ND12 5C006 AA01 AF44 AF67 BB15 BC03 BC12 BF16 BF42 EC01 FA22 FA34 5C080 AA10 BB05 DD03 EE29 FF03 FF11 JJ02 JJ04 JJ07
Claims (11)
備えた液晶表示システムであって、 前記表示信号供給装置の電源がオフすると、前記液晶表
示装置の電源も実質上同時にオフするように、前記液晶
表示装置と前記表示信号供給装置とが接続されており、 前記表示信号供給装置は、前記液晶表示装置に表示信号
を供給する表示信号供給手段と、外部から電源をオフす
る指示を受け付ける電源オフ指示受付手段と、その電源
オフ指示受付手段が前記電源をオフする指示を受け付け
た場合、その受け付けたタイミングから所定時間が経過
する前に、前記液晶表示装置の電源がオフされることを
前もって知らせる電源オフ予告信号を前記液晶表示装置
に供給する電源オフ予告信号供給手段とを有し、前記電
源オフ指示受付手段が前記電源をオフする指示を受け付
けた場合、その受け付けたタイミングから前記所定時間
が経過した後に実際に電源をオフし、 前記液晶表示装置は、共通電極、複数の画素電極、及び
液晶層を有する液晶表示パネルと、前記表示信号供給装
置からの前記表示信号を受け付ける表示信号受付手段
と、その表示信号受付手段が受け付けた前記表示信号に
基づいて、前記複数の各画素電極に所定の電圧を印加す
る電圧印加手段と、前記表示信号供給装置からの前記電
源オフ予告信号を受け付ける電源オフ予告信号受付手段
と、その電源オフ予告信号受付手段が前記電源オフ予告
信号を受け付けた場合、前記表示信号受付手段が受け付
けた前記表示信号にかかわらず、前記複数の画素電極の
全部又は一部と前記共通電極とを実質上同一の電位にす
る制御手段とを有する、液晶表示システム。1. A liquid crystal display system including a display signal supply device and a liquid crystal display device, wherein when the power supply of the display signal supply device is turned off, the power supply of the liquid crystal display device is also turned off substantially at the same time. The liquid crystal display device and the display signal supply device are connected to each other, and the display signal supply device receives a display signal supply means for supplying a display signal to the liquid crystal display device and an instruction to turn off the power supply from the outside. When the power-off instruction receiving means and the power-off instruction receiving means receive the instruction to turn off the power, the power of the liquid crystal display device is turned off before a predetermined time elapses from the received timing. A power-off warning signal supplying means for supplying a power-off warning signal to the liquid crystal display device, the power-off instruction receiving means turning off the power. When the instruction is received, the power is actually turned off after the predetermined time has elapsed from the received timing, the liquid crystal display device includes a common electrode, a plurality of pixel electrodes, and a liquid crystal display panel having a liquid crystal layer, Display signal receiving means for receiving the display signal from the display signal supply device, and voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes based on the display signal received by the display signal receiving means. A power-off notice signal receiving unit that receives the power-off notice signal from the display signal supply device; and, if the power-off notice signal receiving unit receives the power-off notice signal, the display signal receiving unit receives the power-off notice signal. Control means for setting all or part of the plurality of pixel electrodes and the common electrode to substantially the same potential regardless of the display signal , A liquid crystal display system.
信号供給手段と、外部から電源をオフする指示を受け付
ける電源オフ指示受付手段とを備え、その電源オフ指示
受付手段が前記電源をオフする指示を受け付けた場合、
その受け付けたタイミングから所定時間が経過した後に
実際に電源をオフする表示信号供給装置において、 その表示信号供給装置の電源がオフすると、前記液晶表
示装置の電源も実質上同時にオフするように、前記液晶
表示装置と前記表示信号供給装置とが接続されており、 前記電源オフ指示受付手段が前記電源をオフする指示を
受け付けた場合、その受け付けたタイミングから前記所
定時間が経過する前に、前記液晶表示装置の電源がオフ
されることを前もって知らせる電源オフ予告信号を前記
液晶表示装置に供給する電源オフ予告信号供給手段をさ
らに備えた表示信号供給装置であって、 前記液晶表示装置が、共通電極、複数の画素電極、及び
液晶層を有する液晶表示パネルと、前記表示信号供給装
置からの前記表示信号を受け付ける表示信号受付手段
と、その表示信号受付手段が受け付けた前記表示信号に
基づいて、前記複数の各画素電極に所定の電圧を印加す
る電圧印加手段と、前記表示信号供給装置からの前記電
源オフ予告信号を受け付ける電源オフ予告信号受付手段
と、その電源オフ予告信号受付手段が前記電源オフ予告
信号を受け付けた場合、前記表示信号受付手段が受け付
けた前記表示信号にかかわらず、前記複数の画素電極の
全部又は一部と前記共通電極とを実質上同一の電位にす
る制御手段とを備えた、表示信号供給装置。2. A display signal supply means for supplying a display signal to the liquid crystal display device, and a power-off instruction reception means for receiving an instruction to turn off the power from the outside, the power-off instruction reception means turning off the power. If you accept the instructions,
In a display signal supply device that actually turns off the power after a predetermined time has elapsed from the received timing, when the power of the display signal supply device is turned off, the power of the liquid crystal display device is also turned off substantially at the same time. When the liquid crystal display device and the display signal supply device are connected and the power-off instruction receiving means receives an instruction to turn off the power, the liquid crystal is displayed before the predetermined time has elapsed from the received timing. A display signal supply device further comprising a power-off notification signal supply means for supplying to the liquid crystal display device a power-off notification signal that notifies the display device that the power is turned off in advance, wherein the liquid crystal display device has a common electrode. A liquid crystal display panel having a plurality of pixel electrodes and a liquid crystal layer, and receiving the display signal from the display signal supply device Display signal receiving means, voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes based on the display signal received by the display signal receiving means, and the power-off notice from the display signal supply device When the power-off notice signal receiving unit that receives a signal and the power-off notice signal receiving unit receives the power-off notice signal, regardless of the display signal received by the display signal receiving unit, A display signal supply device comprising: a control means for setting all or part of the common electrode to substantially the same potential.
を有する液晶表示パネルと、表示信号供給装置からの表
示信号を受け付ける表示信号受付手段と、その表示信号
受付手段が受け付けた前記表示信号に基づいて、前記複
数の各画素電極に所定の電圧を印加する電圧印加手段
と、前記表示信号供給装置からの前記電源オフ予告信号
を受け付ける電源オフ予告信号受付手段と、その電源オ
フ予告信号受付手段が前記電源オフ予告信号を受け付け
た場合、前記表示信号受付手段が受け付けた前記表示信
号にかかわらず、前記複数の画素電極の全部又は一部と
前記共通電極とを実質上同一の電位にする制御手段とを
備えた液晶表示装置であって、 前記表示信号供給装置の電源がオフすると、前記液晶表
示装置の電源も実質上同時にオフするように、前記液晶
表示装置と前記表示信号供給装置とが接続されており、 前記表示信号供給装置が、前記液晶表示装置に前記表示
信号を供給する表示信号供給手段と、外部から電源をオ
フする指示を受け付ける電源オフ指示受付手段と、その
電源オフ指示受付手段が前記電源をオフする指示を受け
付けた場合、その受け付けたタイミングから所定時間が
経過する前に、前記液晶表示装置の電源がオフされるこ
とを前もって知らせる電源オフ予告信号を前記液晶表示
装置に供給する電源オフ予告信号供給手段とを有し、前
記電源オフ指示受付手段が前記電源をオフする指示を受
け付けた場合、その受け付けたタイミングから前記所定
時間が経過した後に実際に電源をオフする、液晶表示装
置。3. A liquid crystal display panel having a common electrode, a plurality of pixel electrodes, and a liquid crystal layer, display signal receiving means for receiving a display signal from a display signal supply device, and the display signal received by the display signal receiving means. Voltage application means for applying a predetermined voltage to each of the plurality of pixel electrodes, a power-off warning signal receiving means for receiving the power-off warning signal from the display signal supply device, and a power-off warning signal reception means for receiving the power-off warning signal. When the means receives the power-off notice signal, all or part of the plurality of pixel electrodes and the common electrode are set to substantially the same potential regardless of the display signal received by the display signal receiving means. A liquid crystal display device including a control means, wherein when the power of the display signal supply device is turned off, the power of the liquid crystal display device is also turned off substantially at the same time. The liquid crystal display device and the display signal supply device are connected to each other, and the display signal supply device receives a display signal supply means for supplying the display signal to the liquid crystal display device and an instruction to turn off the power supply from the outside. When the power-off instruction receiving means and the power-off instruction receiving means receive the instruction to turn off the power, the power of the liquid crystal display device is turned off before a predetermined time elapses from the received timing. A power-off notice signal supplying means for supplying a power-off notice signal to the liquid crystal display device to notify in advance, and when the power-off instruction receiving means receives an instruction to turn off the power, the predetermined timing is given from the received timing. A liquid crystal display device that actually turns off the power after a certain amount of time has passed.
求項３に記載の液晶表示装置。4. The liquid crystal display device according to claim 3, wherein the same potential means zero potential.
キング期間に、前記複数の画素電極の全部又は一部と前
記共通電極とを実質上同一の電位にする請求項３又は４
に記載の液晶表示装置。5. The control means sets all or some of the plurality of pixel electrodes and the common electrode to substantially the same potential during a blanking period of a vertical synchronization signal.
The liquid crystal display device according to item 1.
示信号を供給する表示信号供給手段と、外部から電源を
オフする指示を受け付ける電源オフ指示受付手段と、そ
の電源オフ指示受付手段が前記電源をオフする指示を受
け付けた場合、その受け付けたタイミングから所定時間
が経過する前に、前記液晶表示装置の電源がオフされる
ことを前もって知らせる電源オフ予告信号を前記液晶表
示装置に供給する電源オフ予告信号供給手段と、 前記液晶表示装置における、前記表示信号供給装置から
の前記表示信号を受け付ける表示信号受付手段と、その
表示信号受付手段が受け付けた前記表示信号に基づい
て、前記液晶表示パネルの複数の各画素電極に所定の電
圧を印加する電圧印加手段と、前記表示信号供給装置か
らの前記電源オフ予告信号を受け付ける電源オフ予告信
号受付手段と、その電源オフ予告信号受付手段が前記電
源オフ予告信号を受け付けた場合、前記表示信号受付手
段が受け付けた前記表示信号にかかわらず、前記複数の
画素電極の全部又は一部と前記共通電極とを実質上同一
の電位にする制御手段との全部又は一部としてコンピュ
ータを機能させるためのプログラム。6. The liquid crystal display system according to claim 1, wherein in the display signal supply device, display signal supply means for supplying a display signal to the liquid crystal display device, and power-off for receiving an instruction to turn off the power from the outside. When the instruction accepting means and the power-off instruction accepting means accept the instruction to turn off the power source, the liquid crystal display device is informed in advance that the power source is turned off before a predetermined time elapses from the received timing. A power-off warning signal supplying means for supplying a power-off warning signal to the liquid crystal display device, a display signal accepting means for accepting the display signal from the display signal supplying device in the liquid crystal display device, and a display signal accepting means thereof. Voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes of the liquid crystal display panel based on the received display signal. A power-off notice signal receiving unit that receives the power-off notice signal from the display signal supply device; and, if the power-off notice signal receiving unit receives the power-off notice signal, the display signal receiving unit receives the power-off notice signal. A program for causing a computer to function as all or part of all or part of the plurality of pixel electrodes and control means for setting the common electrode to substantially the same potential regardless of the display signal.
液晶表示装置に表示信号を供給する表示信号供給手段
と、外部から電源をオフする指示を受け付ける電源オフ
指示受付手段と、その電源オフ指示受付手段が前記電源
をオフする指示を受け付けた場合、その受け付けたタイ
ミングから前記所定時間が経過する前に、前記液晶表示
装置の電源がオフされることを前もって知らせる電源オ
フ予告信号を前記液晶表示装置に供給する電源オフ予告
信号供給手段との全部又は一部としてコンピュータを機
能させるためのプログラム。7. The display signal supply device according to claim 2,
A display signal supply unit that supplies a display signal to the liquid crystal display device, a power-off instruction reception unit that receives an instruction to turn off the power from the outside, and a power-off instruction reception unit that receives the instruction to turn off the power, All or one of the power-off notice signal supplying means for supplying the liquid-crystal display device with a power-off notice signal in advance that the power of the liquid crystal display device is turned off before the predetermined time has elapsed from the received timing. A program that causes a computer to function as a department.
信号供給装置からの表示信号を受け付ける表示信号受付
手段と、その表示信号受付手段が受け付けた前記表示信
号に基づいて、前記液晶表示パネルの複数の各画素電極
に所定の電圧を印加する電圧印加手段と、前記表示信号
供給装置からの前記電源オフ予告信号を受け付ける電源
オフ予告信号受付手段と、その電源オフ予告信号受付手
段が前記電源オフ予告信号を受け付けた場合、前記表示
信号受付手段が受け付けた前記表示信号にかかわらず、
前記複数の画素電極の全部又は一部と前記共通電極とを
実質上同一の電位にする制御手段との全部又は一部とし
てコンピュータを機能させるためのプログラム。8. The liquid crystal display device according to claim 3, wherein the liquid crystal display is based on display signal receiving means for receiving a display signal from the display signal supply device and the display signal received by the display signal receiving means. The voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes of the panel, the power-off warning signal receiving means for receiving the power-off warning signal from the display signal supplying device, and the power-off warning signal receiving means When the power off notice signal is accepted, regardless of the display signal accepted by the display signal acceptance means,
A program for causing a computer to function as all or part of all or some of the plurality of pixel electrodes and control means for setting the common electrode to substantially the same potential.
示信号を供給する表示信号供給手段と、外部から電源を
オフする指示を受け付ける電源オフ指示受付手段と、そ
の電源オフ指示受付手段が前記電源をオフする指示を受
け付けた場合、その受け付けたタイミングから所定時間
が経過する前に、前記液晶表示装置の電源がオフされる
ことを前もって知らせる電源オフ予告信号を前記液晶表
示装置に供給する電源オフ予告信号供給手段と、 前記液晶表示装置における、前記表示信号供給装置から
の前記表示信号を受け付ける表示信号受付手段と、その
表示信号受付手段が受け付けた前記表示信号に基づい
て、前記液晶表示パネルの複数の各画素電極に所定の電
圧を印加する電圧印加手段と、前記表示信号供給装置か
らの前記電源オフ予告信号を受け付ける電源オフ予告信
号受付手段と、その電源オフ予告信号受付手段が前記電
源オフ予告信号を受け付けた場合、前記表示信号受付手
段が受け付けた前記表示信号にかかわらず、前記複数の
画素電極の全部又は一部と前記共通電極とを実質上同一
の電位にする制御手段との全部又は一部としてコンピュ
ータを機能させるためのプログラムを担持した媒体であ
って、コンピュータにより処理可能な媒体。9. The liquid crystal display system according to claim 1, wherein, in the display signal supply device, display signal supply means for supplying a display signal to the liquid crystal display device and power-off for receiving an instruction to turn off the power from the outside. When the instruction accepting means and the power-off instruction accepting means accept the instruction to turn off the power source, the liquid crystal display device is informed in advance that the power source is turned off before a predetermined time elapses from the received timing. A power-off warning signal supplying means for supplying a power-off warning signal to the liquid crystal display device, a display signal accepting means for accepting the display signal from the display signal supplying device in the liquid crystal display device, and a display signal accepting means thereof. Voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes of the liquid crystal display panel based on the received display signal. A power-off notice signal receiving unit that receives the power-off notice signal from the display signal supply device; and, if the power-off notice signal receiving unit receives the power-off notice signal, the display signal receiving unit receives the power-off notice signal. A medium carrying a program for causing a computer to function as all or part of all or part of the plurality of pixel electrodes and control means for setting the common electrode to substantially the same potential regardless of the display signal. A medium that can be processed by a computer.
の、液晶表示装置に表示信号を供給する表示信号供給手
段と、外部から電源をオフする指示を受け付ける電源オ
フ指示受付手段と、その電源オフ指示受付手段が前記電
源をオフする指示を受け付けた場合、その受け付けたタ
イミングから前記所定時間が経過する前に、前記液晶表
示装置の電源がオフされることを前もって知らせる電源
オフ予告信号を前記液晶表示装置に供給する電源オフ予
告信号供給手段との全部又は一部としてコンピュータを
機能させるためのプログラムを担持した媒体であって、
コンピュータにより処理可能な媒体。10. The display signal supply device according to claim 2, a display signal supply means for supplying a display signal to the liquid crystal display device, a power supply off instruction reception means for receiving an instruction to turn off the power supply from the outside, and a power supply thereof. When the off instruction receiving means receives the instruction to turn off the power source, the power off advance notice signal for notifying in advance that the power source of the liquid crystal display device will be turned off before the predetermined time elapses from the received timing. A medium carrying a program for causing a computer to function as all or part of a power-off notice signal supplying means to be supplied to a liquid crystal display device,
A computer-processable medium.
示信号供給装置からの表示信号を受け付ける表示信号受
付手段と、その表示信号受付手段が受け付けた前記表示
信号に基づいて、前記液晶表示パネルの複数の各画素電
極に所定の電圧を印加する電圧印加手段と、前記表示信
号供給装置からの前記電源オフ予告信号を受け付ける電
源オフ予告信号受付手段と、その電源オフ予告信号受付
手段が前記電源オフ予告信号を受け付けた場合、前記表
示信号受付手段が受け付けた前記表示信号にかかわら
ず、前記複数の画素電極の全部又は一部と前記共通電極
とを実質上同一の電位にする制御手段との全部又は一部
としてコンピュータを機能させるためのプログラムを担
持した媒体であって、コンピュータにより処理可能な媒
体。11. The liquid crystal display device according to claim 3, wherein the liquid crystal display is based on display signal receiving means for receiving a display signal from the display signal supplying device, and the display signal received by the display signal receiving means. The voltage applying means for applying a predetermined voltage to each of the plurality of pixel electrodes of the panel, the power-off warning signal receiving means for receiving the power-off warning signal from the display signal supplying device, and the power-off warning signal receiving means When a power-off notice signal is received, regardless of the display signal received by the display signal receiving means, a control means for setting all or some of the plurality of pixel electrodes and the common electrode to substantially the same potential. A medium that carries a program for causing a computer to function as all or a part of the above, and is a medium that can be processed by a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188713A JP2003050565A (en) | 2000-06-29 | 2001-06-21 | Liquid crystal display system, display signal supply device, and liquid crystal display device |
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-196083 | 2000-06-29 | ||
| JP2000196083 | 2000-06-29 | ||
| JP2001-160298 | 2001-05-29 | ||
| JP2001160298 | 2001-05-29 | ||
| JP2001188713A JP2003050565A (en) | 2000-06-29 | 2001-06-21 | Liquid crystal display system, display signal supply device, and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003050565A true JP2003050565A (en) | 2003-02-21 |
Family
ID=27343894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001188713A Pending JP2003050565A (en) | 2000-06-29 | 2001-06-21 | Liquid crystal display system, display signal supply device, and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003050565A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005086132A1 (en) * | 2004-03-09 | 2005-09-15 | Seiko Epson Corporation | Display device and image blanking method |
| JP2005274868A (en) * | 2004-03-24 | 2005-10-06 | Casio Comput Co Ltd | Liquid crystal display device and driving device for liquid crystal display device |
| JP2006047500A (en) * | 2004-08-02 | 2006-02-16 | Seiko Epson Corp | Display panel driving circuit, display device, and electronic equipment |
| JP2007133251A (en) * | 2005-11-11 | 2007-05-31 | Toshiba Matsushita Display Technology Co Ltd | Liquid crystal display device |
| JP2009186801A (en) * | 2008-02-07 | 2009-08-20 | Seiko Epson Corp | Method of driving electrooptical apparatus, electrooptical apparatus and electronic equipment |
| WO2009128281A1 (en) * | 2008-04-16 | 2009-10-22 | シャープ株式会社 | Circuit for driving liquid crystal display apparatus |
| WO2013154039A1 (en) * | 2012-04-13 | 2013-10-17 | シャープ株式会社 | Liquid-crystal display device and drive method thereof |
| JP2013250523A (en) * | 2012-06-04 | 2013-12-12 | Mitsubishi Electric Corp | Liquid crystal display device |
| WO2014050719A1 (en) * | 2012-09-27 | 2014-04-03 | シャープ株式会社 | Liquid-crystal display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10214067A (en) * | 1996-11-26 | 1998-08-11 | Sharp Corp | Erasing device of liquid crystal display picture and liquid crystal display device which is provided with the erasing device |
| JPH10222134A (en) * | 1997-02-12 | 1998-08-21 | Hitachi Ltd | Liquid crystal display device and information processor |
| JPH11271707A (en) * | 1998-03-19 | 1999-10-08 | Toshiba Corp | Liquid crystal display device |
-
2001
- 2001-06-21 JP JP2001188713A patent/JP2003050565A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10214067A (en) * | 1996-11-26 | 1998-08-11 | Sharp Corp | Erasing device of liquid crystal display picture and liquid crystal display device which is provided with the erasing device |
| JPH10222134A (en) * | 1997-02-12 | 1998-08-21 | Hitachi Ltd | Liquid crystal display device and information processor |
| JPH11271707A (en) * | 1998-03-19 | 1999-10-08 | Toshiba Corp | Liquid crystal display device |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7733324B2 (en) | 2004-03-09 | 2010-06-08 | Seiko Epson Corporation | Display device and image erasing method |
| WO2005086132A1 (en) * | 2004-03-09 | 2005-09-15 | Seiko Epson Corporation | Display device and image blanking method |
| US8797257B2 (en) | 2004-03-09 | 2014-08-05 | Seiko Epson Corporation | Display device having an image erasing circuit that is independent of the driving circuit and an image erasing method |
| JP2005274868A (en) * | 2004-03-24 | 2005-10-06 | Casio Comput Co Ltd | Liquid crystal display device and driving device for liquid crystal display device |
| JP2006047500A (en) * | 2004-08-02 | 2006-02-16 | Seiko Epson Corp | Display panel driving circuit, display device, and electronic equipment |
| KR100704786B1 (en) | 2004-08-02 | 2007-04-10 | 세이코 엡슨 가부시키가이샤 | Display panel drive circuit, display device, and electronic equipment |
| JP2007133251A (en) * | 2005-11-11 | 2007-05-31 | Toshiba Matsushita Display Technology Co Ltd | Liquid crystal display device |
| JP2009186801A (en) * | 2008-02-07 | 2009-08-20 | Seiko Epson Corp | Method of driving electrooptical apparatus, electrooptical apparatus and electronic equipment |
| WO2009128281A1 (en) * | 2008-04-16 | 2009-10-22 | シャープ株式会社 | Circuit for driving liquid crystal display apparatus |
| CN101939779B (en) * | 2008-04-16 | 2013-02-27 | 夏普株式会社 | Driving circuit for liquid crystal display device |
| WO2013154039A1 (en) * | 2012-04-13 | 2013-10-17 | シャープ株式会社 | Liquid-crystal display device and drive method thereof |
| CN104221075A (en) * | 2012-04-13 | 2014-12-17 | 夏普株式会社 | Liquid-crystal display device and drive method thereof |
| US9595232B2 (en) | 2012-04-13 | 2017-03-14 | Sharp Kabushiki Kaisha | Liquid crystal display device and driving method thereof |
| JP2013250523A (en) * | 2012-06-04 | 2013-12-12 | Mitsubishi Electric Corp | Liquid crystal display device |
| WO2014050719A1 (en) * | 2012-09-27 | 2014-04-03 | シャープ株式会社 | Liquid-crystal display device |
| JPWO2014050719A1 (en) * | 2012-09-27 | 2016-08-22 | シャープ株式会社 | Liquid crystal display |
| US9536491B2 (en) | 2012-09-27 | 2017-01-03 | Sharp Kabushiki Kaisha | Liquid-crystal display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3827823B2 (en) | Liquid crystal display image erasing device and liquid crystal display device including the same | |
| US6621489B2 (en) | LCD display unit | |
| JP2004325808A (en) | Liquid crystal display device and driving method therefor | |
| KR100318979B1 (en) | Controller and control method for liquid-crystal display panel, and liquid-crystal display device | |
| JP2003050565A (en) | Liquid crystal display system, display signal supply device, and liquid crystal display device | |
| TWI240818B (en) | Display device | |
| US20060132422A1 (en) | Method of driving liquid crystal display and liquid crystal display | |
| JPH07271323A (en) | Liquid crystal display device | |
| JPH1010489A (en) | Liquid crystal display device | |
| JP3686961B2 (en) | Liquid crystal display device and electronic apparatus using the same | |
| JP2659858B2 (en) | LCD drive | |
| JP2005037685A (en) | Driving device and method for liquid crystal display panel | |
| JPH0594243A (en) | Portable input/output device | |
| JP2004325853A (en) | Method of preventing image persistence of liquid crystal monitor, liquid crystal monitor provided with image persistence preventing function, and computer provided with image persistence preventing function of liquid crystal monitor | |
| JP2010066632A (en) | Driver power supply circuit for liquid crystal panel | |
| JP2002311905A (en) | Liquid crystal display device and image display applied equipment using the same | |
| KR100710259B1 (en) | The device and method for managing power of TV set | |
| JP2674484B2 (en) | Active matrix liquid crystal display | |
| JP3635967B2 (en) | Driving method of liquid crystal display device | |
| JP2003233351A (en) | Driving device for liquid crystal display panel | |
| JP2000148101A (en) | Active matrix liquid crystal driving device | |
| JP2005137066A (en) | Power source circuit | |
| JPH06138439A (en) | Liquid crystal display device | |
| CN110299119B (en) | Liquid crystal control circuit, electronic clock, and liquid crystal control method | |
| JP3989861B2 (en) | Information processing device body, display device, and information processing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080609 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110610 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20120327 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20120717 |