JP3391061B2 - Liquid crystal device driving method and display device - Google Patents
Liquid crystal device driving method and display deviceInfo
- Publication number
- JP3391061B2 JP3391061B2 JP25192793A JP25192793A JP3391061B2 JP 3391061 B2 JP3391061 B2 JP 3391061B2 JP 25192793 A JP25192793 A JP 25192793A JP 25192793 A JP25192793 A JP 25192793A JP 3391061 B2 JP3391061 B2 JP 3391061B2
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- Japan
- Prior art keywords
- selection
- period
- liquid crystal
- electrodes
- display device
- 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 - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば液晶表示パネル
等の駆動方法及びそれを用いた表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving method for a liquid crystal display panel and a display device using the same.
【０００２】[0002]
【従来の技術】従来の液晶素子の駆動方法で、同時に複
数本の走査電極を選択する駆動方法として、特願平４−
８４００７で示すように、図９に示すような方法があ
る。このような走査電極波形の組合せで、例えば、画面
全体がオンの場合を考えると、ある画素に印加される電
圧波形は図９の（ｃ）の様になり、１Ｆで示す１フレー
ムの中で非選択期間に印加される電圧はｆ１の期間にＶ
3あるいは−Ｖ3が印加されるだけとなり、１フレーム期
間の中で印加電圧の分布に偏りが発生してしまい、図９
（ｄ）の光学応答で示すように、オンのときは９０１の
ような光学応答となり、１ｆと２ｆの境の近辺が一番明
るくなり、３ｆ，４ｆと次第に暗くなってしまう。ま
た、画面全体がオフの場合にも１フレームの中で非選択
期間に印加される電圧はｆ１の期間にＶ3あるいは−Ｖ3
が印加されるだけとなり、１フレーム期間の中で印加電
圧の分布に偏りが発生してしまい、図９（ｄ）の光学応
答で示すように、オンのときは９０２のような光学応答
となり、１ｆと２ｆの境の近辺が一番明るくなり、３
ｆ，４ｆと次第に暗くなってしまい、特に１ｆ，２ｆ期
間の黒レベルがかなり明るくなってしまう。2. Description of the Related Art A conventional driving method for a liquid crystal element is a driving method for simultaneously selecting a plurality of scanning electrodes.
As shown by 84007, there is a method as shown in FIG. With such a combination of scan electrode waveforms, for example, considering the case where the entire screen is on, the voltage waveform applied to a certain pixel is as shown in FIG. 9C, and in one frame shown by 1F. The voltage applied during the non-selection period is V during the period of f1.
Only 3 or -V3 is applied, and the distribution of the applied voltage is biased within one frame period.
As shown in the optical response of (d), when it is on, the optical response is as 901, and the vicinity of the boundary between 1f and 2f becomes the brightest, and becomes gradually darker at 3f and 4f. Even when the entire screen is off, the voltage applied during the non-selection period within one frame is V3 or -V3 during the period of f1.
Is applied, a bias occurs in the distribution of the applied voltage within one frame period, and as shown in the optical response of FIG. 9D, when turned on, an optical response such as 902 occurs, The area near the border between 1f and 2f becomes brightest and becomes 3
The black level becomes gradually darker as f and 4f, and the black level becomes considerably bright especially in the 1f and 2f periods.
【０００３】[0003]
【発明が解決しようとする課題】このように、１フレー
ム期間の中で輝度変化の差が大きくなり、チラツキの原
因となる。また、オフ時の黒レベルが明るくなってしま
いコントラストが低下してしまう。As described above, the difference in luminance change becomes large within one frame period, which causes flicker. In addition, the black level at the time of turning off becomes bright and the contrast is lowered.
【０００４】[0004]
【課題を解決するための手段】本発明の液晶装置の駆動
方法は、複数の走査電極及び前記複数の走査電極に交差
する複数の信号電極と、前記各走査電極と前記各信号電
極との間に挟持された液晶とを備える液晶装置の駆動方
法において、複数の前記走査電極を同時に選択し、前記
走査電極を選択する選択電圧は、第１の選択値と第２の
選択値を有し、選択期間を複数の期間に区分し、区分さ
れたそれぞれの期間に、前記第１の選択値または前記第
２の選択値の前記選択電圧を、同時に選択される前記複
数の走査電極に印加し、同時に印加する前記選択電圧の
選択値のうち一つだけが他の選択値と異なるよう設定さ
れてなることを特徴とする。また、本発明の液晶装置の
駆動方法は、上記の液晶装置の駆動方法において、前記
選択期間を１フレーム内で間隔をあけて複数回に分けて
設けることを特徴とする。また、本発明の液晶装置の駆
動方法は、上記の液晶装置の駆動方法において、同時に
選択する前記複数の走査電極に印加する選択電圧の選択
値を、ｎ（ｎは整数）走査毎に組み替えることを特徴と
する。また、本発明の液晶装置の駆動方法は、上記の液
晶装置の駆動方法において、組み替え前の走査時の前記
第１の選択値と前記第２の選択値の各々の数と、組み替
えたときの前記第１の選択値と前記第２の選択値の各々
の数が同じになる様にしたことを特徴とする。また、本
発明の液晶装置の駆動方法は、上記の液晶装置の駆動方
法において、同時に選択する前記複数の走査電極は４本
であることを特徴とする。また、本発明の表示装置は、
複数の走査電極及び前記複数の走査電極に交差する複数
の信号電極と、前記各走査電極と前記各信号電極との間
に挟持された液晶とを備える表示装置において、複数の
前記走査電極が同時に選択され、前記走査電極を選択す
る選択電圧は、第１の選択値と第２の選択値を有し、選
択期間を複数の期間に区分し、区分されたそれぞれの期
間に、前記第１の選択値または前記第２の選択値の前記
選択電圧が、同時に選択される前記複数の走査電極に印
加され、同時に印加する前記選択電圧の選択値のうち一
つだけが他の選択値と異なるよう設定されてなることを
特徴とする。また、本発明の表示装置は、上記の表示装
置において、前記選択期間を１フレーム内で間隔をあけ
て複数回に分けて設けられることを特徴とする。また、
本発明の表示装置は、上記の表示装置において、同時に
選択する前記複数の走査電極に印加する選択電圧の選択
値が、ｎ（ｎは整数）走査毎に組み替えられることを特
徴とする。また、本発明の表示装置は、上記の表示装置
において、組み替え前の走査時の前記第１の選択値と前
記第２の選択値の各々の数と、組み替えたときの前記第
１の選択値と前記第２の選択値の各々の数が同じになる
様にしたことを特徴とする。また、本発明の表示装置
は、上記の表示装置において、同時に選択する前記複数
の走査電極は４本であることを特徴とする。According to a method of driving a liquid crystal device of the present invention, a plurality of scanning electrodes and a plurality of signal electrodes intersecting the plurality of scanning electrodes, and a plurality of signal electrodes are provided between the respective scanning electrodes and the respective signal electrodes. In a method for driving a liquid crystal device including a liquid crystal sandwiched between, a plurality of scanning electrodes are selected at the same time, and a selection voltage for selecting the scanning electrodes has a first selection value and a second selection value. The selection period is divided into a plurality of periods, and in each of the divided periods, the selection voltage of the first selection value or the second selection value is applied to the plurality of scan electrodes that are simultaneously selected, Only one of the selection values of the selection voltage applied at the same time is set to be different from other selection values. Further, a driving method of the liquid crystal device of the present invention is characterized in that, in the driving method of the liquid crystal device, the selection period is divided into a plurality of times at intervals in one frame. In the method for driving a liquid crystal device of the present invention, in the method for driving a liquid crystal device described above, the selection value of the selection voltage applied to the plurality of scan electrodes that are simultaneously selected is changed every n (n is an integer) scans. Is characterized by. Further, the liquid crystal device driving method of the present invention is the same as the above liquid crystal device driving method, in which the number of each of the first selection value and the second selection value at the time of scanning before the rearrangement and the number of the rearrangement when the rearrangement is performed. The number of each of the first selection value and the second selection value is the same. Further, the driving method of the liquid crystal device of the present invention is characterized in that, in the driving method of the liquid crystal device, the plurality of scanning electrodes selected at the same time are four. In addition, the display device of the present invention,
In a display device including a plurality of scanning electrodes and a plurality of signal electrodes intersecting the plurality of scanning electrodes, and a liquid crystal sandwiched between the scanning electrodes and the signal electrodes, a plurality of the scanning electrodes are simultaneously formed. A selection voltage selected to select the scan electrode has a first selection value and a second selection value, divides a selection period into a plurality of periods, and divides the first period into each of the divided periods. The selection voltage of the selection value or the second selection value is applied to the plurality of scan electrodes selected at the same time, and only one of the selection values of the selection voltage applied at the same time is different from other selection values. It is characterized by being set. Further, the display device of the present invention is characterized in that, in the above display device, the selection period is provided in a plurality of times with an interval in one frame. Also,
The display device of the present invention is characterized in that, in the display device described above, the selection value of the selection voltage applied to the plurality of scan electrodes selected simultaneously is changed every n (n is an integer) scans. Further, in the display device of the present invention, in the above display device, the number of each of the first selection value and the second selection value at the time of scanning before recombination and the first selection value at the time of recombination. And the second selection values have the same number. Further, the display device of the present invention is characterized in that, in the display device described above, the plurality of scanning electrodes selected simultaneously are four.
【０００５】[0005]
【実施例】以下に、実施例に基づいて本発明による液晶
素子等の駆動方法及び表示方法を具体的に説明する。EXAMPLES Hereinafter, a driving method and a display method for a liquid crystal element and the like according to the present invention will be specifically described based on Examples.
【０００６】（実施例１）図１は、４ラインを同時に駆
動する場合の走査電極に印加する電圧波形とある信号電
極に印加する電圧波形を示している。１Ｆで示す１フレ
ーム期間を、１ｆ，２ｆ，３ｆ，４ｆの４つのフィール
ド期間に分け、各フィールド期間の走査電極に印加する
電圧波形の選択電圧の極性を図２（ａ）に示すように印
加する。図２に示す１Ｌ〜４Ｌは同時に選択する各走査
電極を示し、１ｆ〜４ｆは各フィールド期間を示してい
る。図１で示す走査電極波形のＸ1〜Ｘ4は、最初に選択
する４ラインの走査電極波形で、Ｘ5〜Ｘ8は、２番目に
選択する走査電極波形である。(Embodiment 1) FIG. 1 shows a voltage waveform applied to a scanning electrode and a voltage waveform applied to a certain signal electrode when four lines are simultaneously driven. One frame period indicated by 1F is divided into four field periods 1f, 2f, 3f, and 4f, and the polarity of the selection voltage of the voltage waveform applied to the scan electrode in each field period is applied as shown in FIG. To do. Reference numerals 1L to 4L shown in FIG. 2 denote scan electrodes selected at the same time, and 1f to 4f denote field periods. The scan electrode waveforms X1 to X4 shown in FIG. 1 are the scan electrode waveforms of the four lines selected first, and X5 to X8 are the scan electrode waveforms selected the second.
【０００７】最初の４ラインが選択される１ｆの１Ｈ期
間の選択電圧の極性は、Ｘ1から順番に＋、＋、−、＋
とし、２番目に選択する４ラインの選択期間１ｆの２Ｈ
期間の選択電圧の極性は、Ｘ5から順番に＋、＋、−、
＋とする。この様にして、同時に４ラインずつ走査し
て、全ラインを走査し終わると、次に２ｆ期間で最初に
選択する４ラインから順番に走査して行く。２ｆ期間で
の選択電圧の極性は、Ｘ1から順番に＋、−、＋、＋と
している。２ｆ期間の走査が終わると３ｆ期間の走査を
し、次に４ｆ期間の走査をする。３ｆ期間の選択電圧の
極性は、Ｘ1から順番に−、＋、＋、＋とし、４ｆ期間
の選択電圧の極性は、＋、＋、＋、−としている。The polarities of the selection voltages during the 1H period of 1f, in which the first four lines are selected, are +, +,-, + in order from X1.
And 2H of the selection period 1f of the 4th line to be selected second
The polarity of the selection voltage of the period is +, +,-, in order from X5.
+ In this manner, four lines are simultaneously scanned, and when all the lines have been scanned, the first four lines to be selected next in the 2f period are sequentially scanned. The polarity of the selection voltage in the 2f period is +,-, +, + in order from X1. When the scanning of the 2f period is completed, the scanning of the 3f period is performed, and then the scanning of the 4f period is performed. The polarities of the selection voltage in the 3f period are −, +, +, + in order from X1, and the polarities of the selection voltage in the 4f period are +, +, +, −.
【０００８】この様に、同時に選択する選択電圧の極性
が４つのうち１つだけ違う組合せとすると、例えば、あ
る信号電極上の画素が全オンのとき、図１（ｃ）に示す
信号電極波形となり、１フレーム期間の中に均一にＶ2
あるいは−Ｖ2が印加されることになり、各画素に印加
される非選択時の電圧のバラツキがなくなり１フレーム
期間の輝度変化も少なくなる。これは、通常の表示の中
で一番多いと思われる白表示の中に黒い文字表示、ある
いは、黒表示の中に白い文字表示においてチラツキを減
らし、コントラストを上げ、画質を向上できる。In this way, when the polarities of the selection voltages selected at the same time are different by only one out of four, for example, when all pixels on a certain signal electrode are on, the signal electrode waveform shown in FIG. And evenly V2 within one frame period
Alternatively, -V2 is applied, so that there is no variation in the voltage applied to each pixel when it is not selected, and the change in luminance during one frame period is reduced. This reduces flicker in white character display in black character display or white character display in black character display, which is considered to be most common in normal display, increases contrast, and improves image quality.
【０００９】また、図２（ｂ）に示すような選択電圧の
極性の組合せにしても同じ様な効果が出せる。The same effect can be obtained by combining the polarities of the selection voltages as shown in FIG. 2 (b).
【００１０】また、選択電圧の極性を図２（ｃ）の様な
組合せにすることによって、同時に選択する４ラインの
中で１フレームごとに見たときの極性がライン毎に逆極
性になることでチラツキをより減らすことが出来る。By selecting the polarities of the selection voltages as shown in FIG. 2 (c), the polarities of the four lines selected at the same time when viewed for each frame are opposite to each other. You can reduce flicker even more.
【００１１】尚、この選択電圧の極性は、何ラインかご
とやフレームごとに極性を反転させてもよい。The polarity of the selection voltage may be inverted every few lines or every frame.
【００１２】（実施例２）図３は、実施例２における４
ラインを同時に駆動する場合の走査電極に印加する電圧
波形とある信号電極に印加する電圧波形を示している。
１Ｆで示す１フレーム期間を、１ｆ，２ｆ，３ｆ，４ｆ
の４つのフィールド期間に分け、かつ１選択期間ごとに
１Ｈ〜４Ｈの４つに分け、各フィールド期間の走査電極
に印加する電圧波形の選択電圧の極性を図４（ａ）に示
すように印加する。図４に示す１Ｌ〜４Ｌは同時に選択
する各走査電極を示し、１ｆ〜４ｆは各フィールド期間
を示している。図３で示す走査電極波形のＸ1〜Ｘ4は、
最初に選択する４ラインの走査電極波形で、Ｘ5〜Ｘ8
は、２番目に選択する走査電極波形である。(Embodiment 2) FIG.
The voltage waveform applied to a scanning electrode and the voltage waveform applied to a certain signal electrode when driving a line simultaneously are shown.
One frame period indicated by 1F is defined as 1f, 2f, 3f, 4f
4H, and 1H to 4H for each selection period, and the polarity of the selection voltage of the voltage waveform applied to the scan electrode in each field period is applied as shown in FIG. To do. Reference numerals 1L to 4L shown in FIG. 4 denote scan electrodes selected at the same time, and 1f to 4f denote field periods. The scan electrode waveforms X1 to X4 shown in FIG.
The scan electrode waveform of 4 lines to be selected first, X5 to X8
Is the scan electrode waveform to be selected second.
【００１３】最初の４ラインが選択される１ｆの１Ｈ期
間の選択電圧の極性は、Ｘ1から順番に＋、＋、−、＋
とし、２番目に選択する４ラインの選択期間１ｆの２Ｈ
期間の選択電圧の極性は、Ｘ5から順番に＋、−、＋、
＋とし、３番目に選択する４ラインの選択期間１ｆの３
Ｈ期間の選択電圧の極性は、Ｘ9から順番に−、＋、
＋、＋とし、４番目に選択する４ラインの選択期間１ｆ
の４Ｈ期間の選択電圧の極性は、Ｘ13から順番に＋、
＋、＋、−とし、１選択期間ごとに１Ｈ〜４Ｈの組合せ
を繰り返す。この様にして、同時に４ラインずつ走査し
て、全ラインを走査し終わると、次に２ｆ期間で最初に
選択する４ラインから順番に走査して行く。２ｆ期間で
の選択電圧の極性は、図４（ａ）の２ｆに示す極性の組
合せとして、１ｆ期間の時と同様に順番に走査して行
く。３ｆ、４ｆ期間についても、選択電圧の極性は、図
４（ａ）の３ｆ、４ｆに各々示す組合せとして、１ｆ期
間の時と同様に順番に走査して行く。この様に、同時に
選択する選択電圧の極性の組合せを１選択期間ごとに組
替えて１Ｈ〜４Ｈの組合せを順番に替えることによっ
て、例えば、図３（ｃ）に示すように、信号電極波形の
０、Ｖ3、−Ｖ3の電圧レベルを１フレーム期間の中で１
ｆ、２ｆ、３ｆ、４ｆの各フィールドに分散させること
ができ、１フレーム期間の輝度変化を少なくできチラツ
キを減少させ、コントラストも向上する。The polarities of the selection voltages during the 1H period of 1f in which the first four lines are selected are +, +,-, + in order from X1.
And 2H of the selection period 1f of the 4th line to be selected second
The polarity of the selection voltage of the period is +,-, +, in order from X5.
Set to + and select 3 for the 4th selection period 1f 3
The polarity of the selection voltage in the H period is −, +, in order from X9.
Select +, +, and select period 1f for 4th line to be selected fourth
The polarity of the selection voltage during the 4H period of is + in order from X13,
+, +,-, And the combination of 1H to 4H is repeated for each selection period. In this manner, four lines are simultaneously scanned, and when all the lines have been scanned, the first four lines to be selected next in the 2f period are sequentially scanned. The polarity of the selection voltage in the 2f period is a combination of the polarities shown in 2f of FIG. 4A, and scanning is performed in order in the same manner as in the 1f period. Also in the 3f and 4f periods, the polarities of the selection voltages are set to the combinations shown in 3f and 4f of FIG. 4A, and the scanning is performed in the same order as in the 1f period. In this way, by changing the combination of the polarities of the selection voltages to be simultaneously selected for each selection period and changing the combination of 1H to 4H in order, for example, as shown in FIG. , V3, -V3 voltage level is set to 1 in one frame period.
It can be dispersed in each field of f, 2f, 3f, and 4f, and a change in luminance in one frame period can be reduced, flicker can be reduced, and contrast can be improved.
【００１４】また、選択電圧の極性を図４（ｂ）の様な
組合せにすることによって、同時に選択する４ラインの
中で１フレームごとに見たときの極性がライン毎に逆極
性になることでチラツキをより減らすことが出来る。Further, by selecting the polarities of the selection voltages as shown in FIG. 4 (b), the polarities of the four lines selected simultaneously become the opposite polarities when viewed for each frame. You can reduce flicker even more.
【００１５】尚、この選択電圧の極性は、何ラインかご
とやフレームごとに極性を反転させてもよい。また、実
施例２では、１選択期間ごとに選択電圧の極性の組合せ
を替えているがこれは何選択期間ごとでもよく例えば、
２選択期間ごとや、３選択期間ごとでもよく、組合わせ
を替える順番もどの様にしてもよい。また、組合せのパ
ターンの種類も幾つでもよく、２種類以上のパターンで
組替えればよい。The polarity of the selection voltage may be inverted every few lines or every frame. Further, in the second embodiment, the combination of the polarities of the selection voltage is changed for each selection period, but this may be changed for any selection period.
It may be every two selection periods or every three selection periods, and the combination may be changed in any order. Moreover, the number of types of the combination patterns may be any, and the patterns may be recombined with two or more types.
【００１６】（実施例３）実施例１、２では、４ライン
を同時に選択する場合を例として説明したが、実施例３
ではそれ以外のものについて説明する。(Third Embodiment) In the first and second embodiments, the case where four lines are simultaneously selected has been described as an example.
Then, I will explain other things.
【００１７】図５は、６ラインを同時に選択する場合の
走査電極に印加する電圧波形の選択電圧の極性を示して
いる。このときは、１フレーム期間を１ｆ〜８ｆの８つ
のフィールド期間に分け、１選択期間ごとに１Ｈの組合
せパターンと２Ｈの組合せパターンとを切り替える。ま
た、実施例２で説明したように、例えば１Ｈで示すパタ
ーンで１選択期間ごとに１ｆ〜８ｆのパターンを入れ替
えるようにし、例えば１フィールド目の最初の選択期間
は１ｆで示すパターンとし、次の選択期間は２ｆで示す
パターンとして行くこともできる。FIG. 5 shows the polarities of the selection voltage of the voltage waveform applied to the scan electrodes when 6 lines are simultaneously selected. At this time, one frame period is divided into eight field periods 1f to 8f, and a 1H combination pattern and a 2H combination pattern are switched for each selection period. Further, as described in the second embodiment, the patterns 1f to 8f are exchanged for each selection period in the pattern shown by 1H, for example, the pattern shown by 1f is used in the first selection period of the first field. The selection period can be set as a pattern indicated by 2f.
【００１８】図６は、７ラインを同時に選択する場合の
走査電極に印加する電圧波形の選択電圧の極性を示して
いる。このときは、１フレーム期間を１ｆ〜８ｆの８つ
のフィールド期間に分け、１選択期間ごとに１Ｈの組合
せパターンと２Ｈの組合せパターンとを切り替える。ま
た、実施例２で説明したように、例えば１Ｈで示すパタ
ーンで１選択期間ごとに１ｆ〜８ｆのパターンを入れ替
えるようにし、例えば１フィールド目の最初の選択期間
は１ｆで示すパターンとし、次の選択期間は２ｆで示す
パターンとして行くこともできる。FIG. 6 shows the polarities of the selection voltages of the voltage waveform applied to the scan electrodes when 7 lines are simultaneously selected. At this time, one frame period is divided into eight field periods 1f to 8f, and a 1H combination pattern and a 2H combination pattern are switched for each selection period. Further, as described in the second embodiment, the patterns 1f to 8f are exchanged for each selection period in the pattern shown by 1H, for example, the pattern shown by 1f is used in the first selection period of the first field. The selection period can be set as a pattern indicated by 2f.
【００１９】図７は、８ラインを同時に選択する場合の
走査電極に印加する電圧波形の選択電圧の極性を示して
いる。このときは、１フレーム期間を１ｆ〜８ｆの８つ
のフィールド期間に分け、１選択期間ごとに１Ｈの組合
せパターンと２Ｈの組合せパターンとを切り替える。ま
た、実施例２で説明したように、例えば１Ｈで示すパタ
ーンで１選択期間ごとに１ｆ〜８ｆのパターンを入れ替
えるようにし、例えば１フィールド目の最初の選択期間
は１ｆで示すパターンとし、次の選択期間は２ｆで示す
パターンとして行くこともできる。FIG. 7 shows the polarities of the selection voltages of the voltage waveform applied to the scan electrodes when 8 lines are simultaneously selected. At this time, one frame period is divided into eight field periods 1f to 8f, and a 1H combination pattern and a 2H combination pattern are switched for each selection period. Further, as described in the second embodiment, the patterns 1f to 8f are exchanged for each selection period in the pattern shown by 1H, for example, the pattern shown by 1f is used in the first selection period of the first field. The selection period can be set as a pattern indicated by 2f.
【００２０】図８は、３ラインを同時に選択する場合の
走査電極に印加する電圧波形の選択電圧の極性を示して
いる。このときは、１フレーム期間を１ｆ〜４ｆの４つ
のフィールド期間に分け、実施例２で説明したように、
１選択期間ごとに１Ｈ〜４Ｈに示す選択電圧の極性の組
合せで切り替えて行く。FIG. 8 shows the polarities of the selection voltages of the voltage waveform applied to the scan electrodes when three lines are simultaneously selected. At this time, one frame period is divided into four field periods 1f to 4f, and as described in the second embodiment,
Switching is performed for each one selection period according to the combination of the polarities of the selection voltages shown in 1H to 4H.
【００２１】この様に駆動することで、１フレーム期間
の輝度変化を少なくできチラツキを減少させ、コントラ
ストも向上する。By driving in this way, the change in luminance during one frame period can be reduced, flicker can be reduced, and contrast can be improved.
【００２２】上記の実施例１〜３では、同時選択ライン
数を３〜８ラインについて説明したが２ラインあるいは
８ライン以上でも同様の考え方で駆動できる。In the first to third embodiments described above, the number of simultaneously selected lines is 3 to 8 lines, but the same idea can be applied to the case of 2 lines or 8 lines or more.
【００２３】そして、この様な駆動方法による表示装置
をパーソナルコンピューター等の表示装置として使うこ
とによって画質が向上した見やすい表示が実現できる。By using the display device by such a driving method as a display device of a personal computer or the like, an easy-to-see display with improved image quality can be realized.
【００２４】[0024]
【発明の効果】以上説明したように本発明によって、高
速応答の液晶ディスプレイでもコントラストが高く、チ
ラツキが少なく、クロストークの少ない表示品質の高い
表示装置を提供することができる。As described above, according to the present invention, it is possible to provide a display device which has a high contrast even in a high-speed response liquid crystal display, has less flicker, and has less crosstalk and high display quality.
【図１】本発明による液晶素子等の駆動方法の一例を示
す駆動波形図。FIG. 1 is a drive waveform diagram showing an example of a method of driving a liquid crystal element or the like according to the present invention.
【図２】本発明による液晶素子等の駆動方法による走査
電極の選択電圧の極性を示す図。FIG. 2 is a diagram showing polarities of selection voltages of scan electrodes according to a driving method of a liquid crystal element or the like according to the present invention.
【図３】本発明による液晶素子等の駆動方法の一例を示
す駆動波形図。FIG. 3 is a drive waveform diagram showing an example of a method for driving a liquid crystal element or the like according to the present invention.
【図４】本発明による液晶素子等の駆動方法による走査
電極の選択電圧の極性を示す図。FIG. 4 is a diagram showing polarities of selection voltages of scan electrodes according to a driving method of a liquid crystal element or the like according to the present invention.
【図５】本発明による液晶素子等の駆動方法による走査
電極の選択電圧の極性を示す図。FIG. 5 is a diagram showing polarities of selection voltages of scan electrodes according to a driving method of a liquid crystal element or the like according to the present invention.
【図６】本発明による液晶素子等の駆動方法による走査
電極の選択電圧の極性を示す図。FIG. 6 is a diagram showing the polarities of the selection voltages of the scanning electrodes according to the method of driving a liquid crystal element or the like according to the present invention.
【図７】本発明による液晶素子等の駆動方法による走査
電極の選択電圧の極性を示す図。FIG. 7 is a diagram showing the polarities of the selection voltages of the scan electrodes according to the method of driving a liquid crystal element or the like according to the present invention.
【図８】本発明による液晶素子等の駆動方法による走査
電極の選択電圧の極性を示す図。FIG. 8 is a diagram showing the polarities of the selection voltages of the scanning electrodes according to the driving method of a liquid crystal element or the like according to the present invention.
【図９】従来の液晶素子等の駆動波形を示す図と光学応
答を示す図。FIG. 9 is a diagram showing a drive waveform of a conventional liquid crystal element and the like and a diagram showing an optical response.
Claims (10)
に交差する複数の信号電極と、前記各走査電極と前記各
信号電極との間に挟持された液晶とを備える液晶装置の
駆動方法において、 複数の前記走査電極を同時に選択し、 前記走査電極を選択する選択電圧は、第１の選択値と第
２の選択値を有し、 選択期間を複数の期間に区分し、区分されたそれぞれの
期間に、前記第１の選択値または前記第２の選択値の前
記選択電圧を、同時に選択される前記複数の走査電極に
印加し、 同時に印加する前記選択電圧の選択値のうち一つだけが
他の選択値と異なるよう設定されてなることを特徴とす
る液晶装置の駆動方法。1. A method of driving a liquid crystal device, comprising: a plurality of scan electrodes; a plurality of signal electrodes intersecting the plurality of scan electrodes; and a liquid crystal sandwiched between the scan electrodes and the signal electrodes. , A plurality of scanning electrodes are selected at the same time, and a selection voltage for selecting the scanning electrodes has a first selection value and a second selection value, and the selection period is divided into a plurality of periods, During the period of time, the selection voltage of the first selection value or the second selection value is applied to the plurality of scan electrodes that are simultaneously selected, and only one of the selection values of the selection voltage that is simultaneously applied is selected. Is set so as to be different from other selected values.
けて複数回に分けて設けることを特徴とする請求項１記
載の液晶装置の駆動方法。2. The method of driving a liquid crystal device according to claim 1, wherein the selection period is provided in a plurality of times at intervals within one frame.
加する選択電圧の選択値を、 ｎ（ｎは整数）走査毎に組み替えることを特徴とする請
求項１または２記載の液晶装置の駆動方法。3. The method of driving a liquid crystal device according to claim 1, wherein the selection values of the selection voltages applied to the plurality of scanning electrodes selected at the same time are changed every n (n is an integer) scans. .
と前記第２の選択値の各々の数と、組み替えたときの前
記第１の選択値と前記第２の選択値の各々の数が同じに
なる様にしたことを特徴とする請求項３記載の液晶装置
の駆動方法。4. The number of each of the first selection value and the second selection value at the time of scanning before recombining, and each of the first selection value and the second selection value when recombining. 4. The method of driving a liquid crystal device according to claim 3, wherein the numbers are the same.
本であることを特徴とする請求項１乃至４のいずれかに
記載の液晶装置の駆動方法。5. The number of scan electrodes selected simultaneously is 4
It is a book, The driving method of the liquid crystal device according to any one of claims 1 to 4.
に交差する複数の信号電極と、前記各走査電極と前記各
信号電極との間に挟持された液晶とを備える表示装置に
おいて、 複数の前記走査電極が同時に選択され、 前記走査電極を選択する選択電圧は、第１の選択値と第
２の選択値を有し、 選択期間を複数の期間に区分し、区分されたそれぞれの
期間に、前記第１の選択値または前記第２の選択値の前
記選択電圧が、同時に選択される前記複数の走査電極に
印加され、 同時に印加する前記選択電圧の選択値のうち一つだけが
他の選択値と異なるよう設定されてなることを特徴とす
る表示装置。6. A display device comprising: a plurality of scan electrodes, a plurality of signal electrodes intersecting the plurality of scan electrodes, and a liquid crystal sandwiched between the respective scan electrodes and the respective signal electrodes. The scan electrodes are simultaneously selected, and a selection voltage for selecting the scan electrodes has a first selection value and a second selection value, and the selection period is divided into a plurality of periods. , The selection voltage of the first selection value or the second selection value is applied to the plurality of scan electrodes that are simultaneously selected, and only one of the selection values of the selection voltage applied at the same time is A display device, wherein the display device is set to be different from the selected value.
けて複数回に分けて設けられることを特徴とする請求項
６記載の表示装置。7. The display device according to claim 6, wherein the selection period is provided a plurality of times at intervals within one frame.
加する選択電圧の選択値が、 ｎ（ｎは整数）走査毎に組み替えられることを特徴とす
る請求項６または７記載の表示装置。8. The display device according to claim 6, wherein the selection value of the selection voltage applied to the plurality of scan electrodes selected at the same time is changed every n (n is an integer) scans.
と前記第２の選択値の各々の数と、組み替えたときの前
記第１の選択値と前記第２の選択値の各々の数が同じに
なる様にしたことを特徴とする請求項８記載の表示装
置。9. The number of each of the first selection value and the second selection value at the time of scanning before recombining, and each of the first selection value and the second selection value when recombining. 9. The display device according to claim 8, wherein the numbers are the same.
４本であることを特徴とする請求項６乃至９のいずれか
に記載の表示装置。10. The display device according to claim 6, wherein the plurality of scanning electrodes selected at the same time are four.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25192793A JP3391061B2 (en) | 1993-10-07 | 1993-10-07 | Liquid crystal device driving method and display device |
| JP2000199832A JP3428569B2 (en) | 1993-10-07 | 2000-06-30 | Liquid crystal device driving method and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25192793A JP3391061B2 (en) | 1993-10-07 | 1993-10-07 | Liquid crystal device driving method and display device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000199832A Division JP3428569B2 (en) | 1993-10-07 | 2000-06-30 | Liquid crystal device driving method and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07104243A JPH07104243A (en) | 1995-04-21 |
| JP3391061B2 true JP3391061B2 (en) | 2003-03-31 |
Family
ID=17230046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25192793A Expired - Lifetime JP3391061B2 (en) | 1993-10-07 | 1993-10-07 | Liquid crystal device driving method and display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3391061B2 (en) |
-
1993
- 1993-10-07 JP JP25192793A patent/JP3391061B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07104243A (en) | 1995-04-21 |
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