JP2001356738A - Active matrix type liquid crystal display device and drive method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize pixel resolution of higher definition by charging pixels of a liquid crystal panel without being affected by a delay in a time constant using a conventional method. SOLUTION: Plural scanning signal lines and plural data signal lines are arranged in a matrix form in the liquid crystal panel. A scanning drive 21 sequentially turn on the scanning signal lines at the intersections with these signal lines, to make the tree-terminal active elements of the liquid crystal panel active. When an active element of the preceding stage scanning signal line is ON, the scanning driver 21 turns on the active element of the present stage scanning signal line while shifting the active element of the preceding stage scanning signal line in time. Thus, the scanning driver issues an output to turn on at least two or more scanning signal lines overlapped at the same time, and this lengthens the charging time of the pixel electrodes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device used as an image display device such as a personal computer or a TV set, a driving method thereof, and an information portable device using the liquid crystal display device.

[0002]

2. Description of the Related Art A conventional active matrix type liquid crystal display device will be described with reference to FIG. In a conventional display device, a liquid crystal panel has a plurality of scanning signal lines X _{1 to} X _1.
n and a plurality of data signal lines Y _{1 to} Y _m are arranged in a matrix. The scanning driver 6 is connected to each of the scanning signal lines X ₁ to X ₁ .
A scanning signal is supplied to each of _Xn and these are sequentially driven. The data driver 7 is connected to each data signal line Y ₁
Husband to Y _m s to supplies display data signals at the same time is to drive them. A plurality of scanning signal lines X ₁ to X _n
And a plurality of pixels are arranged in a matrix at the intersections of the plurality of data signal lines Y _{1 to} Y _m to form a liquid crystal display panel.

A transistor 1 that opens a gate in response to an input of a scanning signal is provided at a portion where these signal lines intersect in the liquid crystal panel. Each of the gate electrodes of the transistors 1 are connected individually to the corresponding scanning signal line X ₁ to X _n. Each of the source electrodes of the transistors 1 are connected individually to corresponding data signal lines Y ₁ to Y _m. Each of the drain electrodes of each transistor 1 is individually connected to a pixel electrode 2 in a corresponding pixel. or,
A counter electrode 4 which is a transparent electrode is disposed on the pixel electrode 2 with a liquid crystal 3 interposed therebetween for display. The opposing electrode 4 of each pixel is driven by a common signal commonly supplied from the opposing electrode driver 8 via the opposing bus line 5.

FIG. 9 is a circuit diagram of an arbitrary pixel. As shown in FIG. 9, a scanning signal line X has a scanning signal line resistance XR and a scanning signal line capacitance XC, and a data signal line Y has a data signal line resistance YR and a data signal line capacitance YC in a parallel circuit. .

FIG. 10 is a diagram showing timings at which a display data signal is written to a pixel together with a scanning signal. FIGS. 10A to 10C show the waveforms of the scanning signals supplied from the scanning driver 6 to arbitrary scanning signal lines X _i−1 , X _i and X _{i + 1} , respectively. FIG. 10D shows a waveform of a data signal supplied from the data driver 7 to an arbitrary data signal line _Yj . FIG. 10E shows a waveform of a common signal supplied from the counter electrode driver 8 to the counter electrode 4 of each pixel via the counter bus line 5. The data signals have a reverse polarity relationship between the adjacent data signal lines with the common signal at the center. Figure 10 (f), the scanning signal line X _i and the data signal line Y _j indicates a waveform of the pixel electrode 2-X _i Y _j in the pixel P _ij intersect.

FIG. 10F will be briefly described. In FIG.
1H, the pixel P_ijCorresponding transistor 1-X
_i Y_j Data signal line Y_j From display for
Data signal is supplied. During this 1H, the scanning signal line X
_i Through the transistor 1-X_i Y_j Figure on the gate electrode
10 (b) active scanning signal X_i Is supplied.
Thereby, the pixel P_ijCorresponding transistor 1-X_i Y
_j Is turned on, and this transistor 1-X_i Y_j of
Pixel electrode 2-X connected to the drain electrode _i Y_j To
Is the liquid crystal 3-X_i Y_j To the data signal line Y_j Data from
The signal is written.

[0007] After this 1H Since the scanning signal X _i supplied to the scanning signal line X _i becomes non-active, the pixel P
The transistor 1-X _i Y _j corresponding to _ij is turned off,
Voltage at which the gate is turned off, i.e., the principle that the level of the data signal from the data signal line Y _j is maintained in the pixel electrode 2-X _i Y _j between 1 field.

[0008] In addition, 1 which is the display time of one image of the entire screen.
By supplying each data signal value with a reverse polarity around the common signal for each field, the voltage applied to the liquid crystal is set to be AC. The above is an outline of driving of a general active matrix type liquid crystal display device.

[0009]

However, in such a conventional driving method of an active matrix type liquid crystal display device, considering the rise and fall times of the gate, FIGS. 10 (a) to 10 (c) and the like. As described above, the actual ON state time is shorter than 1H, and it is difficult to sufficiently charge the battery. In the future, as the pixel resolution becomes higher and higher, there has been a problem how to charge the battery sufficiently.

That is, in the driving method of the conventional active matrix type liquid crystal display device, there are the following problems in obtaining sufficient charging. First, as shown in FIG. 9, each scanning signal line has a scanning signal line resistance XR and a scanning signal line capacitance XC. These products represent a delay component called a scan signal line time constant. The scan signal line is applied from the time when the ON state voltage is applied to the scan signal line which is an OFF voltage to the time when the voltage of the scan signal line becomes the ON voltage. A time delay determined by the time constant, the off voltage, the on voltage, and the natural logarithm e occurs. Therefore, the time during which the gate is in the ON state is shorter than the time during which the ON voltage is applied to the scanning signal line, so that the charging time is also short and sufficient charging cannot be obtained. This poses a further problem since the higher the resolution of the pixel becomes, the shorter the on-voltage application time per scanning signal line becomes.

[0011] In addition, similar to the scanning signal line, each data signal line has the same problem as the data signal line resistance YR and the data signal line capacitance YC, respectively.

The present invention solves the above-mentioned conventional problems in a high-resolution active matrix type liquid crystal display device required for an LCD monitor or the like as a substitute for a CRT, and obtains a sufficient charge. An object of the present invention is to provide an active matrix type liquid crystal display device which enables high-quality display by using the same and a driving method thereof.

[0013]

According to the first aspect of the present invention, a scanning signal line and a plurality of data signal lines are arranged in a matrix, and the scanning signal line has a three-terminal type at an intersection of these signal lines. A drive terminal side electrode of the active element is connected to one terminal side electrode of the active element to the data signal line, and a pixel electrode constituting a pixel is connected to the other terminal side electrode of the active element. A liquid crystal panel including a liquid crystal portion between the pixel electrode and a counter electrode; a scan driver for supplying a scan signal to a scan signal line of the liquid crystal panel; and a data driver for supplying a data signal to a data signal line of the liquid crystal panel And a driving method for an active matrix type liquid crystal display device, comprising: when an active element on a preceding scanning signal line is in an ON state, The element is turned on at a time shifted from the active element of the preceding scanning signal line, thereby simultaneously driving at least two or more scanning signal lines to be turned on. It is.

According to a second aspect of the present invention, in the driving method of the active matrix type liquid crystal display device according to the first aspect,
One field, which is the display time of one image of the entire screen, is divided into a plurality of subfields on the time axis, and the number of the scanning signal lines to be turned on by overlapping the scanning signal lines is different for each subfield. It is characterized by having

According to a third aspect of the present invention, in the driving method of the active matrix type liquid crystal display device according to the second aspect, the scanning direction of the scanning signal line is reversed in each field in the field. It is a feature.

According to a fourth aspect of the present invention, in the driving method of the active matrix type liquid crystal display device according to any one of the first to third aspects, the data signals are transmitted between adjacent data signal lines. It is characterized in that the common signal is supplied at the opposite polarity with respect to the center.

According to a fifth aspect of the present invention, in the active matrix type liquid crystal display device of the first aspect, a scanning signal line and a plurality of data signal lines are arranged in a matrix.
At the intersection of these signal lines, the scanning signal line is connected to the drive terminal side electrode of the three-terminal active element, and the data signal line is connected to the one terminal side electrode of the active element. Is connected to a pixel electrode constituting a pixel, the pixel electrode further includes a liquid crystal panel including a liquid crystal portion between a counter electrode, a scan driver for supplying a scan signal to a scan signal line of the liquid crystal panel, A data driver that supplies a data signal to a data signal line of a liquid crystal panel. In the active matrix type liquid crystal display device, the scan driver sequentially activates the scan signal lines along a line of the scan signal lines, and A part of the active time of the plurality of scanning signal lines is overlapped, and the active elements on the scanning signal lines are turned on. It is characterized in that drive.

According to a sixth aspect of the present invention, in the active matrix type liquid crystal display device of the fifth aspect, the scan driver divides a field, which is a display time of one image of the entire screen, into a plurality of subfields, The number of a plurality of scanning signal lines to be overlapped in a subfield is made different.

According to a seventh aspect of the present invention, in the active matrix type liquid crystal display device of the sixth aspect, the scanning driver reverses the scanning direction of the scanning signal line in each field. It is assumed that.

According to an eighth aspect of the present invention, in the active matrix type liquid crystal display device according to any one of the fifth to seventh aspects, the data driver supplies the data signal to the counter electrode between adjacent data signal lines. Each data signal is supplied in the opposite polarity with respect to the common signal.

According to a ninth aspect of the present invention, an active matrix type liquid crystal display device according to any one of the fifth to eighth aspects is mounted as a display unit.

[0022]

Embodiments of the present invention will be described below in detail with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram showing a configuration of an active matrix type liquid crystal display device according to Embodiment 1 of the present invention. Is omitted. Also in this embodiment, the configuration of the liquid crystal panel itself is the same as that of the conventional example, and a timing signal is output from the control circuit 9 to the scanning driver 21. Further, a timing signal and a display data signal are output to the data driver 22. The scanning driver 21 sequentially drives the scanning lines by turning on a plurality of adjacent lines, for example, two signal scanning lines so as to overlap each other as described later. Data driver 22 and outputs the polarities of different data signals about the common signal to each line in the data signal lines Y ₁ to Y _m.

Next, an example of the configuration of the data driver 21 is shown in FIG. The data driver 21 includes a shift register 31 to which a shift pulse is applied, a delay circuit 32 and an OR circuit 33 connected to the output terminal of each section. The delay circuit 32 (D) delays the output of the shift register 31 by one clock each, and the OR circuit 33 generates a drive signal for each scanning line by the logical sum of the delay output and the output before the delay. It is. This signal is supplied to each of the scanning signal lines X ₁ to X ₁ through a drive circuit (not shown).
_Xn .

Next, the drive of the liquid crystal display device according to the present embodiment will be described.
The operation method will be described with reference to the waveform diagram of FIG. Figure
3 (a) to 3 (c) are scanning signals from the scanning driver 21 respectively.
Line X _i-1 , X_i , X_{i + 1} Of the scanning signal supplied
The waveform is shown. FIG. 3D shows the data driver 22.
From the data signal line Y_j The waveform of the data signal supplied above
Is shown. FIG. 3E shows a state in which the opposing electrode driver 8 opposes.
It is supplied to the counter electrode 4 of each pixel via the bus line 5
3 shows a waveform of a common signal. The data signal is
Data signal lines are inverted around the common signal
The relationship between the polarities and the display time of one image on the entire screen
Each field has a reverse polarity around the common signal
Invert into a relationship. FIG. 3F shows the scanning signal line X_i And day
Signal line Y_j Pixel P intersects_ijPixel electrode 2-X in_i 
Y_j 3 shows the waveforms of FIG.

FIG. 3 will be described in detail. In the pixel 1 _ij , during the first 1 GH period composed of T1 and T2,
An active signal is supplied to the scanning signal line X _i , but the first half T1 of this 1 GH overlaps with the active signal of the scanning signal line X _i-1 to be turned on, so that the data signal line Y _j Has a pixel P alternated with the scanning signal line X _i-1.
A display data signal of _{i-1, j} is supplied. In the second half T2
In (1H: effective active time), there is no overlap with the scanning signal X _i−1, and the display data signal for the scanning signal line X _i is supplied to the data signal line Y _j . As a result, the voltage of the pixel electrode of the pixel _Pij changes in the period T1 as shown in FIG. 3 (f). However, the voltage can be set to the predetermined voltage level in the period T2. Is kept. Thus the voltage of the scanning signal line X _i during the period T1 in the overlap can be allowed to rise from the off state to the predetermined on-voltage. That is, the effect of the delay due to the time constant is eliminated during the effective active time T2, which is effective in shortening the charging time.

Also, the data signal written to each pixel is inverted between the adjacent data signal lines in a relationship of opposite polarity around the common signal, so that the effective value at the time of AC driving differs depending on the polarity. Flickering can be prevented, and display uniformity can be improved.

(Embodiment 2) Next, Embodiment 2 of the present invention will be described. The entire configuration of the liquid crystal display device is common to the block diagram shown in FIG. As shown in the detailed configuration of FIG. 4, the scanning driver 23 divides the input shift pulse by a frequency dividing circuit 34, a shift register 31, a delay circuit 32 similar to the first embodiment, and a first group. In addition to the OR circuit 33, a second group of OR circuits 35 for calculating the logical sum of the outputs of four adjacent OR circuits, and the output of the second group of OR circuits 35 and the output of the subfield switching circuit 36 are obtained. An AND circuit 37 is provided. A third group of OR circuits 38 for calculating the logical sum of the output of each AND circuit 37 and the first group of OR circuits 33 is provided as a driving signal for each scanning signal line. The drive signals of each scanning line via a driver (not shown) connected to the scan line X ₀ to X _n of the liquid crystal panel. The subfield switching circuit 36 is constituted by a flip-flop that changes its state for each input, and outputs the AND circuit 3 according to its output.
7 and the frequency dividing ratio of the frequency dividing circuit 34 is switched. Although not shown, the data driver 24 sequentially outputs data signals according to the output of the subfield switching circuit 36, and holds the data signals at a predetermined level.

Next, the operation of this embodiment will be described.
You. FIG. 5 shows a driving method according to the second embodiment of the present invention.
It shows a waveform. 5 (a) to 5 (e) each run
Scan signal line X from scan driver 23_i-1 , X_i , ...,
X_{i + 3} The waveforms of the scanning signals supplied are shown above.
You. FIG. 5 (f) shows the data signal line Y from the data driver 7.
_j The waveform of the data signal supplied above is shown. FIG.
(G) from the counter electrode driver 8 via the counter bus line 5
Of the common signal supplied to the counter electrode 4 of each pixel
Is shown. Data signals are connected to adjacent data signal lines.
In the opposite polarity relationship around the common signal
And one field, which is the display time of one image on the entire screen
Inverts the polarity of the opposite polarity around the common signal
You. FIG. 5H shows the scanning signal line X._i And data signal line Y_j 
Pixel P intersects_ijPixel electrode 2-X in _i Y_j Waveform
Is shown.

FIG. 5 will be described in detail. In this liquid crystal display device, one field is represented by TH1 and TH2 on the time axis.
Divided into one (or more) subfields,
All the scanning signal lines X _{i to} X _n are scanned for each subfield by the overlap method as described in the first embodiment. At this time, the number of scanning signal lines that are turned on in an overlapped manner is made different between TH1 and TH2. In order to perform such an operation, the output of the subfield switching circuit 36 is set to L level in the first subfield. In this case, since the outputs of the AND circuits 37 are all L, the outputs of the first group of OR circuits 33 become the outputs of the respective scanning signal lines as they are, as in the first embodiment. When scanning of all the lines of the shift register 31 is completed, the output of the last stage is supplied to the subfield switching circuit 36, and the output is set to the H level. As a result, the AND circuit 37 becomes active, and the logical sum of the outputs of the first and second groups of OR circuits becomes the signal of each scanning signal line. At this time, the frequency division ratio of the frequency dividing circuit 34 is switched by the subfield switching circuit 36. As a result, the scanning as shown in FIG. 5 can be realized in the second subfield TH2.

When each scanning signal line is driven in this manner, the ON time 1GH of each scanning signal line is not changed, so that
Effective active time 1H without delay due to time constant
Can be varied for each subfield. Therefore, for example, when a display data signal is supplied in the first subfield TH1 in the same manner as in the first embodiment, and in the second subfield TH2, for example, when a data signal in the same black state is supplied to all pixels, TH1 is set to the same value. It is possible to take a sufficiently long time as compared with TH2.

In the present system, by arbitrarily changing the image display time in one field, there is an effect that it is possible to improve the image quality of moving image display and to suppress a decrease in screen luminance. In particular, an image is displayed in the first subfield TH1,
When black is displayed on the screen of the second subfield TH2,
Video quality can be improved.

Third Embodiment Next, a third embodiment of the present invention will be described. In this embodiment, the overall block configuration is the same as that of the first embodiment, and a detailed description thereof will be omitted. In this embodiment, the scanning driver 2
5. Use the data driver 26. Data driver 26
Outputs an image signal to each line in a fixed direction in the first subfield of the first field as in the second embodiment,
In the second subfield, a constant level is output, and in the first subfield of the second field, the image signal is inverted around the common signal, and the image signal is output in the opposite direction. In the subfield, a predetermined level is output. Scan driver 25
As shown in FIG. 6, the first group of OR circuits 33 to which the output of the shift register 31 and the output of the delay circuit 22 are respectively input, and the OR output of the adjacent OR circuit among the first group of OR circuits FIG. 4 shows a second group OR circuit 35 to be obtained, an AND circuit 37 for calculating the logical product of the outputs of the second group OR circuit 35 and the subfield switching circuits 40 and 41, and a third group OR circuit 38. Are identical. In this embodiment, the subfield switching circuit 40 switches from the first subfield to the second subfield when the shift of the shift register 31 reaches the final stage. Further, in this embodiment, the subfield switching circuit 4
The frequency division ratio of the frequency dividing circuit 42 is switched via the subfield switching circuit 41 by the output of 0. When the shift register is shifted twice in the same direction by the subfield switching circuit 41 and the first field is completed, the operation of the frequency dividing circuit 42 is stopped, the frequency dividing circuit 43 is operated, and the shift register 31 is operated in the opposite direction. Shift. Then, the frequency division ratio of the frequency dividing circuit 43 is changed via the subfield switching circuit 40 based on the output of the subfield switching circuit 41.

FIG. 7 shows a drive according to the third embodiment of the present invention.
It is a wave form diagram which shows a moving method. FIGS. 7A to 7E respectively show
From the scanning driver 25 to the scanning signal line X_i-1 , X_i , ...
・ 、 X _{i + 3} Shown above are the waveforms of the scanning signals supplied respectively.
I have. FIG. 7F shows a data signal from the data driver 26.
Line Y_j The waveform of the data signal supplied above is shown.
FIG. 7 (g) shows a state in which the counter electrode driver 8 switches to the counter bus line 5 from the counter electrode driver 8.
Of the common signal supplied to the counter electrode 4 of each pixel through
The waveform is shown. The data signal is the adjacent data signal
The lines have opposite polarities around the common signal
And one feed, which is the display time of one image on the entire screen
Inverts the polarity of the opposite polarity around the common signal for each field
You. FIG. 7H shows the scanning signal line X._i And data signal line Y_j 
Pixel P intersects_ijPixel electrode 2-X in_i Y_j Waveform
Is shown.

FIG. 7 will be described in detail. In this embodiment, the scanning direction of the scanning signal line is reversed in every field in the subfield method of the variable number of overlaps as described in the second embodiment. That is, in FIG. 7, in the first field, FIG.
While similarly to two overlap represent an H level of the first sequential scanning signal lines in the sub-field TH1 to X ₁ to X _n and scans in the forward direction. At this time, the subfield circuit 40 and the frequency dividing circuit 42 are operated. When the first subfield TH1 ends, the subfield switching circuit 4
0 becomes active. Subfield switching circuit 41 switches the frequency division ratio of the frequency dividing circuit 42 detects this change, the second subfield TH2 At higher sequential scanning signal lines by increasing the number of scanning lines overlap clock X ₁ ~
Drive to _Xn . When the driving up to _Xn is completed, the output of the subfield switching circuit 40 becomes L, the subfield switching circuit 41 detects this change, shifts to the scanning of the second field, and stops the frequency dividing circuit 42. The input signal is applied to the shift register 31 in the opposite direction via the frequency dividing circuit 43. A sequential scanning signal line toward the X ₁ direction from the time X _n is two increments overlapping and turned on. In the second subfield of the second field, the subfield switching circuit 41
By changing the frequency division ratio of the frequency dividing circuit 43, the number of overlapping lines is increased as shown in FIG.

In this manner, in the above-described second embodiment, the period of the first subfield TH1 is set to T
If the period is longer than the period of H2, the display time of the upper part of the screen becomes longer than the display time of the lower part, and a luminance gradient that the upper part becomes bright and the lower part becomes dark may occur. Since the scanning directions are alternately changed in the first and second fields, the display time of the image data is averaged, and the occurrence of a luminance gradient can be suppressed.

Each of the above embodiments shows a basic configuration, and it is needless to say that this configuration can be appropriately changed as needed.

Also, various portable information devices using the active matrix type liquid crystal display device described here as a display section can be constructed.

[0038]

As described above, claims 1 to 5 of the present application are provided.
According to the ninth aspect, each pixel of the liquid crystal panel can be stably charged without being affected by the delay due to the time constant. It is a method that can cope with a case where the pixel resolution is increased while using the conventional design method.

Further, according to the second, third, sixth and seventh aspects of the present invention, one field is divided into subfields, and the number of scanning signal lines which are turned on by overlapping each subfield is changed. Therefore, when an image is displayed in the first subfield and one color such as black is displayed in the second subfield, the print quality of a moving image can be improved.

Further, according to the third and seventh aspects of the present invention, it is possible to suppress the occurrence of luminance gradient by inverting the scanning direction for each field.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a liquid crystal display device according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a scan driver according to the present embodiment.

FIG. 3 is a waveform chart used for describing an operation of the liquid crystal display device in Embodiment 1 of the present invention.

FIG. 4 is a block diagram illustrating a configuration of a scan driver according to a second embodiment of the present invention.

FIG. 5 is a waveform chart used for describing the operation of the liquid crystal display device in Embodiment 2.

FIG. 6 is a block diagram illustrating a configuration of a scan driver according to a third embodiment of the present invention.

FIG. 7 is a waveform chart used for describing the operation of the liquid crystal display device in Embodiment 3.

FIG. 8 is a diagram showing a configuration of a general active matrix liquid crystal display device.

FIG. 9 is a circuit diagram of an arbitrary pixel portion of a general liquid crystal display device.

FIG. 10 is a waveform chart for explaining the operation of a conventional liquid crystal display device.

[Explanation of symbols]

Reference Signs List 1 transistor 2 pixel electrode 3 liquid crystal 3R liquid crystal resistance component 3C liquid crystal capacitance component 4 counter electrode 4R counter electrode resistance 5 counter bus line 6, 21, 23, 25 scan driver 7, 22, 24, 26 data driver 8 counter electrode driver 9 control Circuit 31 Shift register 32 Delay circuit 33 First group OR circuit 34, 42, 43 Divider circuit 35 Second group OR circuit 36, 40, 41 Subfield switching circuit 37 AND circuit 38 Third group OR circuit X ₁ to X _n scanning signal line XR scanning signal line resistance XC scanning signal line capacitance Y ₁ to Y _m data signal lines YR data signal line resistance YC data signal line capacitance

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoneharu Takubo 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Tatsuo Uchida 2-1-1 Takasago, Miyagino-ku, Sendai-shi, Miyagi 11F. Terms (reference) 2H093 NA16 NA32 NA34 NA80 NB11 NC13 NC22 NC23 NC24 NC25 NC27 NC28 NC34 NC90 ND10 ND35 NE10 5C006 AC24 AF50 BB16 BC03 BC11 FA12 FA23 FA37 5C080 AA10 BB05 DD01 DD07 EE19 FF11 FF12 JJ02 JJ03 JJ04

Claims (9)

[Claims] A scanning signal line and a plurality of data signal lines are arranged in a matrix. At the intersection of these signal lines, the scanning signal line includes a drive terminal side electrode of a three-terminal active element, and a data signal line. Is connected to one terminal side electrode of the active element, the other terminal side electrode of the active element is connected to a pixel electrode forming a pixel, and further, the pixel electrode has a liquid crystal portion between itself and a counter electrode. Driving an active matrix liquid crystal display device, comprising: a liquid crystal panel including: a scan driver that supplies a scan signal to a scan signal line of the liquid crystal panel; and a data driver that supplies a data signal to a data signal line of the liquid crystal panel. The active element of the preceding scanning signal line is changed to the active element of the preceding scanning signal line when the active element on the preceding scanning signal line is in an ON state. A driving method for an active matrix type liquid crystal display device, characterized in that at least two or more scanning signal lines are simultaneously driven to be in an on state by overlapping with at least two scanning signal lines by being turned on at a time shifted from a scanning element. 2. A field, which is a display time of one image on the entire screen, is divided into a plurality of subfields on a time axis.
2. The driving method of an active matrix type liquid crystal display device according to claim 1, wherein the number of the scanning signal lines to be turned on by overlapping the scanning signal lines is changed for each subfield. 3. The method of driving an active matrix liquid crystal display device according to claim 2, wherein in the field, the scanning direction of the scanning signal line is reversed in the opposite direction for each field. 4. The active device according to claim 1, wherein each of the data signals is supplied between adjacent data signal lines with opposite polarities around the common signal. A method for driving a matrix liquid crystal display device. 5. A scanning signal line and a plurality of data signal lines are arranged in a matrix. At the intersection of these signal lines, the scanning signal line includes a drive terminal side electrode of a three-terminal active element and a data signal line. Is connected to one terminal side electrode of the active element, the other terminal side electrode of the active element is connected to a pixel electrode forming a pixel, and further, the pixel electrode has a liquid crystal portion between itself and a counter electrode. An active matrix liquid crystal display device comprising: a liquid crystal panel including: a scan driver that supplies a scan signal to a scan signal line of the liquid crystal panel; and a data driver that supplies a data signal to a data signal line of the liquid crystal panel. The scan driver sequentially activates the scan signal lines along a line of the scan signal lines, and sets a time period during which the scan driver becomes active in a plurality of adjacent scan signal lines. 2. The active matrix type liquid crystal display device according to claim 1, wherein the active matrix type liquid crystal display device is driven so as to partially overlap and turn on the active elements on the scanning signal lines. 6. The scanning driver divides a field, which is a display time of one image of the entire screen, into a plurality of sub-fields, and varies the number of overlapping scanning signal lines in each sub-field. 6. The active matrix type liquid crystal display device according to claim 5, wherein: 7. The active matrix type liquid crystal display device according to claim 6, wherein the scanning driver reverses the scanning direction of the scanning signal line in each field. 8. The data driver according to claim 5, wherein adjacent data signal lines supply each data signal with opposite polarity around a common signal supplied to the counter electrode between adjacent data signal lines. 8. The active matrix type liquid crystal display device according to any one of items 7 to 7. 9. An information portable device comprising the active matrix type liquid crystal display device according to claim 5 as a display unit.