JP2003005720A - Liquid crystal display method, liquid crystal display device, program, and medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high display grade when conducting a thinning display on a liquid crystal panel. SOLUTION: The liquid crystal panel is provided with a plurality of switching elements provided corresponding to the crossing points of a plurality of source wiring and a plurality of gate wiring, a plurality of liquid crystal elements connected to prescribed source wiring through the elements and a plurality of capacitive elements provided between the liquid crystal elements and gate wiring adjacent to the elements. In the liquid display method to drive the liquid display panel, a potential V1 that is used to turn on the switching elements, is not applied to any one of the gate wiring of the panel in the period when image data signals corresponding to a gate wiring to be thinned is being inputted among the gate wiring that is normally required in the thinning display.

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 method, a liquid crystal display device, a program, and a medium, which are used in, for example, a TV for thinning out scan lines of an input signal for display.

[0002]

2. Description of the Related Art First, the structure and operation of a conventional liquid crystal display device will be described with reference to FIGS. Note that FIG. 3 is an explanatory diagram of a schematic waveform of a gate signal of the conventional liquid crystal display device. FIG. 6 is an explanatory diagram of the gate signal application timing of the conventional liquid crystal display device.

In FIG. 6, V1 is a voltage for turning on a TFT (switching element) provided in each liquid crystal element, and V2 and V4 are compensation voltages for modulating the source signal Vsig applied to the source wiring. And V3
Is a voltage for turning off the TFT. As shown in FIG. 3, three potentials V1, V2, and V4 and V
The difference from 3 is Vg, Ve [+], and Ve [-] in order.

At this time, the voltage applied to the liquid crystal element in each field is the potential V appearing alternately on the pixel electrode side.
[+], V [-], and Vcom applied to the common electrode side
Is the difference between

[0005]

[Formula 1] V [+] − Vcom = Cs · Ve [+] / Ct
+ Vsig [+]

[0006]

[Formula 2] V [−] − Vcom = Cs · Ve [−] / Ct
+ Vsig [-] appears alternately.

However, when the capacitance of the storage capacitance formed between the gate wiring of the previous stage is Cs and the capacitance of the liquid crystal element which is regarded as a capacitor in terms of the circuit is Clc,

[0008]

[Formula 3] Ct = Cs + Clc Is.

[0009] Incidentally,

[0010]

## EQU00004 ## When Ve [+] and Ve [-] are set so that (V [+]-Vcom) =-(V [-]-Vcom), the DC component is applied to the liquid crystal display element. Can be displayed without an ideal display.

Now, in the case of performing thinned-out display in which scanning lines (gate wirings) are thinned out for display on a liquid crystal panel in which such so-called capacitive coupling driving is performed (for example, 525 scanning lines are used). NTSC (Natio
nal Television System Comi
PAL (Phase Alternation b) using 625 scanning lines on a liquid crystal panel of TEE specification.
y Line) specification signals are displayed, etc.),
As shown in FIG. 4, a specific gate wiring (hereinafter, n + 1
The period of applying V1 to the (third gate wiring) is set long.

Then, since the source signal when the voltage applied to the gate wiring changes from V1 to V4 is finally written in the liquid crystal display element, the n + 2th source signal is written in the (n + 1) th liquid crystal element. Therefore, the (n + 1) th source signal is substantially ignored (that is, decimated).

[0013]

However, the voltage applied to the (n + 1) th liquid crystal element via the storage capacitor fluctuates due to the influence when the gate signal for the nth gate wiring changes from V3 to V1. Therefore, the voltage actually applied to the liquid crystal element in each field is

[0014]

[Equation 5] V [+] − Vcom = Cs · Ve [+] / Ct
+ Vsig [+] + Cs · Vg / Ct

[0015]

[Equation 6] V [−] − Vcom = Cs · Ve [−] / Ct
+ Vsig [−] + Cs · Vg / Ct.

The time during which the voltage varied as described above under the influence of the nth gate wiring is applied to the n + 1th liquid crystal element is about twice as long as in other cases.

As a result, since the liquid crystal element responds to the actual value of the applied voltage, the image displayed on the liquid crystal panel becomes uneven at that portion (n + 1th liquid crystal element), and the display quality deteriorates. Will end up.

In consideration of the above-mentioned conventional problems, the present invention provides a liquid crystal display method, a liquid crystal display device, a program, and a medium that can obtain higher display quality when performing thinning display on a liquid crystal panel. It is intended.

[0019]

[Means for Solving the Problems] The first invention (Claim 1)
Corresponds to a plurality of switching elements provided corresponding to intersections of a plurality of source wirings for inputting image data signals to be displayed and a plurality of gate wirings for inputting a predetermined gate signal. A plurality of liquid crystal elements connected to the predetermined source wiring via the switching element, and a plurality of capacitive elements provided between the liquid crystal element and the gate wiring adjacent to the liquid crystal element. A liquid crystal display method for driving a liquid crystal panel, which is originally required in thinning display performed when the number of gate wirings originally required for performing the display is larger than the total number of gate wirings of the liquid crystal panel. The potential for turning on the switching element during the period in which the image data signal corresponding to the gate wiring to be thinned out among the various gate wirings is input. Wherein a liquid crystal display method that does not apply to any of the gate lines of the liquid crystal panel.

According to a second aspect of the present invention (corresponding to claim 2), a predetermined period starts from an ON period for turning on a switching element corresponding to a gate wiring in a preceding stage of a predetermined gate wiring of the liquid crystal panel for performing the thinning. After the period, a compensation period for applying a compensation potential for performing capacitive coupling drive using the capacitive element to the preceding gate wiring is provided, and during the predetermined period, the originally necessary gate wiring In the liquid crystal display method according to the first aspect of the present invention, the image data signal corresponding to the gate wiring in which the thinning is performed is input to the source wiring.

According to a third aspect of the present invention (corresponding to claim 3), in the predetermined period, a potential substantially equal to a reference potential for turning off the switching element corresponding to the gate wiring in the preceding stage is set in the preceding stage. It is a liquid crystal display method according to the second aspect of the present invention, which is applied to a gate wiring.

In a fourth aspect of the present invention (corresponding to claim 4), the compensation potential is two kinds of potentials alternately used for each field, and a switching element corresponding to the gate wiring in the preceding stage is provided. Immediately after the on period to turn on,
A liquid crystal display method according to a third aspect of the present invention, wherein a period for applying the lower one of the two types of potentials to the gate wiring in the preceding stage is provided.

According to a fifth aspect of the present invention (corresponding to claim 5), a potential equal to the reference potential is applied to the gate of the preceding stage immediately after the ON period for turning on the switching element corresponding to the gate wiring of the preceding stage. It is a liquid crystal display method according to the third aspect of the present invention, wherein a period for applying to the wiring is provided.

In a sixth aspect of the present invention (corresponding to claim 6), the compensation potential is two types of potentials alternately used for each field, and one of the two types of potentials is used. Is a liquid crystal display method according to the third aspect of the present invention, which is equal to the reference potential.

A seventh aspect of the present invention (corresponding to claim 7) is an intersection of a plurality of source wirings for inputting an image data signal to be displayed and a plurality of gate wirings for inputting a predetermined gate signal. Between a plurality of switching elements provided corresponding to the plurality of liquid crystal elements connected to the predetermined source wiring through the switching elements, and between the liquid crystal element and the gate wiring adjacent to the liquid crystal element. A liquid crystal display device for driving a liquid crystal panel comprising a plurality of capacitive elements provided in, wherein the number of gate lines originally necessary for performing the display is more than the total number of gate lines of the liquid crystal panel. In the thinning display performed when there are many,
In the period in which the image data signal corresponding to the gate wiring to be thinned out among the originally necessary gate wirings is input, the potential for turning on the switching element is set to any one of the gate wirings of the liquid crystal panel. It is a liquid crystal display device which is not applied.

According to an eighth aspect of the present invention (corresponding to claim 8), in the liquid crystal display method according to the first aspect of the present invention, the number of gate wiring lines originally required for performing the display is the total number of gate wiring lines of the liquid crystal panel. In the thinning display that is performed when there are more than the number,
During a period in which an image data signal corresponding to the gate wiring to be thinned out of the originally necessary gate wiring is input, a potential for turning on the switching element is applied to any one of the gate wirings of the liquid crystal panel. It is a program that causes a computer to execute steps that are not applied.

A ninth aspect of the present invention (corresponding to claim 9) is that, in the liquid crystal display method according to the first aspect of the present invention, the number of gate wirings originally required for performing the display is the total number of gate wirings of the liquid crystal panel. In the thinning display that is performed when there are more than the number,
During a period in which an image data signal corresponding to the gate wiring to be thinned out among the originally necessary gate wirings is input, a potential for turning on the switching element is applied to any one of the gate wirings of the liquid crystal panel. It is a medium that carries a program for causing a computer to execute steps that are not applied, and is characterized by being processable by the computer.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) First, the configuration of the liquid crystal display device of the present embodiment will be described with reference to FIGS. Note that FIG. 1 is an explanatory diagram of a gate signal application timing of the liquid crystal display device of the present embodiment. Also,
FIG. 2 is an equivalent circuit diagram of the liquid crystal display device of this embodiment.

In FIG. 2, 21 to 23 are gate lines to which a gate signal is applied, 24 is a source line to which a source signal Vsig which is an image signal is applied, 25 is a common electrode to which a reference voltage is applied, and 26 is This is a TFT that is a switching element (for the sake of simplicity, stray capacitance that is not directly related to the present invention is ignored). Further, 27 is a storage capacitor Cs formed between the gate wiring 21 at the preceding stage and 28 is a liquid crystal element which is regarded as a capacitor having a capacitance of Clc in terms of a circuit.

In FIG. 1, V1 is a voltage for turning on the TFT 26 provided in each liquid crystal element 28, and V2
And V4 are source signals V applied to the source wiring 24.
Compensation voltage for modulating sig, V3 is TFT
26 is a voltage for turning off. As in the conventional case described above, the difference between the three potentials V1, V2, and V4 and V3 is Vg, Ve [+], and Ve [-] in order.

Further, in each field, the liquid crystal element 28
The voltage applied to the pixel V is a potential V that appears alternately on the pixel electrode side.
[+], V [-], and Vc applied to the common electrode 25 side
It is the difference with om.

Next, the operation of the liquid crystal display device of this embodiment will be described. An example of the liquid crystal display method of the present invention will be described while the operation of the liquid crystal display device of the present embodiment is described.

Also in the liquid crystal display device of this embodiment,
The same applies to the voltage applied to each field as in the conventional case described above.

However, in the present embodiment, the n + 1-th source signal applied to the source line 24 is not thinned out and displayed, so that the voltage applied to the n + 1-th gate line 23 is turned off in the corresponding period during which the TFT 25 is turned off. Voltage V3. At the same time, the voltage applied to the nth gate wiring 22 is also set to V3. This is the off period 2 for the nth gate line 22 (the period immediately before the application of the compensation potential V4 to the nth gate line 22 is the off period 1 for the nth gate line 22).

Next, in order to validate the n + 2th source signal, the voltage applied to the n + 1th gate wiring 23 is set to V1 for turning on the TFT 25. At this time, at the same time, the voltage applied to the n-th gate wiring 22 is set to the compensation voltage V4. This is the compensation period for the n-th gate wiring 22 (however, the compensation voltage applied during the compensation period switches V2 and V4 for each field as shown by the dotted line for AC driving).

Thus, the length of the ON period in each gate wiring becomes almost the same. Therefore, the time during which the voltage of the ON period applied to the (n + 1) th gate wiring 23 is applied to the liquid crystal element 28 is substantially the same in all screens, and the adverse effect as in the above-described conventional case is eliminated (the thinning driving is performed. Even when, it is possible to apply a substantially uniform voltage across the entire screen).

In short, the compensation potential is two kinds of potentials which are alternately used for each field, and two kinds of potentials are provided immediately after the ON period for turning on the switching element corresponding to the gate wiring of the preceding stage. It suffices to provide a period for applying the lower one of the potentials to the gate wiring in the previous stage.

(Second Embodiment) Next, the configuration and operation of the liquid crystal display device according to the present embodiment will be described with reference to FIG. Note that FIG. 4 is an explanatory diagram of the gate signal application timing of the liquid crystal display device of the present embodiment.

The configuration and operation of the liquid crystal display device of the present embodiment are similar to the configuration and operation of the liquid crystal display device of the first embodiment described above.

However, in this embodiment, the voltage applied during the period corresponding to the off period 1 of the first embodiment described above is also the same as the reference voltage for turning off the switching element. That is, in the present embodiment, the voltage in the off period 1 does not change while remaining at the V3 potential until the compensation period in which the compensation voltage V2 or V4 is applied.

Also in such a driving method, the time for applying the voltage for turning on the switching element is made substantially the same in all the gate wirings, and the line connected to the gate wiring corresponding to the thinned source signal is irregular. Since the time for which a proper voltage is applied and the irregular voltage value are reduced, the display unevenness can be reduced. That is,
The change in the voltage of the gate wiring also changes the voltage applied to the liquid crystal element coupled by the storage capacitor Cst, which leads to deterioration in the uniformity of image display. However, with the drive waveform as in this embodiment, , Such adverse effects are considerably suppressed.

After all, in the liquid crystal panel driving method in which the potential immediately after the V1 potential is the same as the potential for turning off the switching element, the time for applying the voltage for turning on the switching element is set to be substantially the same for all gate wirings. Since the time for which an irregular voltage is applied to the line coupled to the gate wiring corresponding to the drawn source signal and the irregular voltage value are reduced, it is possible to reduce display unevenness. .

In short, even immediately after the on period for turning on the switching element corresponding to the gate wiring in the preceding stage,
It suffices to provide a period for applying a potential equal to the reference potential to the preceding gate wiring.

(Third Embodiment) Next, the configuration and operation of the liquid crystal display device according to the present embodiment will be described with reference to FIG. Note that FIG. 5 is an explanatory diagram of the gate signal application timing of the liquid crystal display device of the present embodiment.

The configuration and operation of the liquid crystal display device of the present embodiment are similar to the configuration and operation of the liquid crystal display device of the first embodiment described above.

However, in the present embodiment, one of the two compensation voltages, V2, is V3. That is, by setting Ve [+] = 0 in the above (Equation 1) and (Equation 2),

[0048]

## EQU00007 ## V [+]-Vcom = Vsig [+]

[0049]

[Equation 8] V [−] − Vcom = Cs · Ve [−] / Ct
+ Vsig [-] is obtained ((Equation 8) is nothing but (Equation 2)). Of course, by setting Vcom so that the above-mentioned (Equation 4) is satisfied, it is possible to perform display without applying a DC component to the liquid crystal display element.

In the present embodiment, the potential fluctuation Cs (V3) that occurs when the off period 2 shifts to the compensation period.
Since -V4) / Ct are all the same, display uniformity is improved.

In short, the compensation potential is two kinds of potentials which are alternately used for each field, and one of the two kinds of potentials has only to be equal to the reference potential.

In the above, the first to third embodiments have been described in detail.

In short, the liquid crystal display method of the present invention corresponds to the intersection of a plurality of source wirings for inputting image data signals to be displayed and a plurality of gate wirings for inputting predetermined gate signals. A plurality of switching elements provided, a plurality of liquid crystal elements connected to a predetermined source wiring through the switching elements, and a plurality of capacitive elements provided between the liquid crystal element and a gate wiring adjacent to the liquid crystal element A liquid crystal display method for driving a liquid crystal panel comprising: a thinning display that is originally performed when the number of gate wirings originally required for display is larger than the total number of gate wirings of the liquid crystal panel. During the period when the image data signal corresponding to the gate wiring that is thinned out of the necessary gate wiring is input, the potential for turning on the switching element is set. Nor applied to any of the gate wiring crystal panel is a liquid crystal display method.

Note that, after a predetermined period from the ON period for turning on the switching element corresponding to the gate wiring in the preceding stage of the predetermined gate wiring of the liquid crystal panel for thinning, capacitive coupling drive using the capacitive element is performed. There is a compensation period to apply the compensation potential to the gate wiring in the previous stage, and during the predetermined period, the image data signal corresponding to the gate wiring to be thinned out of the originally necessary gate wiring is applied to the source wiring. It may be entered. In addition, during the predetermined period,
Substantially, a potential equal to the reference potential for turning off the switching element corresponding to the gate wiring in the preceding stage may be applied to the gate wiring in the preceding stage.

Of course, a plurality of switching elements provided corresponding to intersections of a plurality of source wirings for inputting image data signals to be displayed and a plurality of gate wirings for inputting predetermined gate signals. , Driving a liquid crystal panel including a plurality of liquid crystal elements connected to a predetermined source wiring via a switching element and a plurality of capacitance elements provided between the liquid crystal element and a gate wiring adjacent to the liquid crystal element In the thinning display, which is performed when the number of gate wirings originally required for displaying is larger than the total number of gate wirings of the liquid crystal panel, During the period when the image data signal corresponding to the gate wiring is input, the potential for turning on the switching element is set to any gate of the liquid crystal panel. It is needless to say that even a liquid crystal display device which is not applied to the line included in the present invention.

The present invention includes all or part of the above-described liquid crystal display device of the present invention (or device, element,
A program that causes a computer to execute the functions of circuits, units, and the like, and is a program that operates in cooperation with the computer. Of course, the computer of the present invention is not limited to pure hardware such as a CPU,
It may include firmware, OS, and peripheral devices.

Further, the present invention is a program for causing a computer to execute all or some of the steps (or steps, operations, actions, etc.) of the above-described liquid crystal display method of the present invention. It is a program that works together.

It should be noted that some means (or devices, elements, circuits, sections, etc.) of the present invention and some steps (or steps, operations, actions, etc.) of the present invention include those plural means or It is meant to refer to some means or steps in a step, or to some functions or some operations in one means or step.

Further, some devices (or elements, circuits, parts, etc.) of the present invention mean some devices of the plurality of devices, or some means of one device. (Or, an element, a circuit, a part, etc.) or a part of the functions of one means.

A computer-readable recording medium in which the program of the present invention is recorded is also included in the present invention. 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. 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. The recording medium includes a ROM and the like, and the transmission medium includes a transmission medium such as the Internet and light, radio waves, sound waves and the like.

The configuration of the present invention may be realized by software or hardware.

Further, the present invention is a medium carrying a program for causing a computer to execute all or part of the functions of all or part of the above-mentioned liquid crystal display device of the present invention, which is readable by the computer. The read program is a medium that cooperates with the computer to execute the functions.

Further, the present invention is a medium carrying a program for causing a computer to execute all or some of the operations of all or some of the steps of the above-described liquid crystal display method of the present invention, which is readable by the computer. The read program is a medium that executes the operation in cooperation with the computer.

As described above, according to the present invention, for example, a plurality of source wirings formed in a matrix, a gate wiring, a switching element connected to each of the intersections of the source wiring and the gate wiring, and the switching element thereof. For a liquid crystal panel in which a liquid crystal display element is formed by a pixel electrode connected to the pixel electrode and a common electrode connected to the pixel electrode via a liquid crystal, a storage capacitor is provided between the pixel electrode and a gate wiring adjacent to the pixel electrode. An image is formed by applying the image signal to the liquid crystal display element by superimposing it with the potential given from the source line by forming and changing the potential of the pixel electrode by applying two kinds of compensating voltages which are modulation signals to the gate line. A method of driving an active matrix type liquid crystal panel for displaying, comprising: an ON period for applying a voltage for turning on a switching element; An off period 1 for applying a lower one of the two types of compensation voltages, an off period 2 for applying a voltage for turning off a switching element, and a compensation voltage for a predetermined time earlier than a change in the applied voltage. The timing for applying the gate voltage to the nth gate wiring and the voltage for turning on the switching element to the (n + 1) th gate wiring in the order of the compensation period and the off period 3 for applying the voltage for turning off the switching element A method for driving a liquid crystal panel, wherein the timing for turning on the switching element connected to the (n + 1) th gate wiring is shifted by one horizontal period or more by setting the time when the off period 2 ends so as to turn on the switching element. The time to apply the voltage is the same for all gate wirings. That time irregular voltage is applied to the line, it can reduce the irregular voltage value, an effect that it is possible to reduce the display unevenness.

Further, the present invention is, for example, the above-mentioned liquid crystal panel driving method, wherein the voltage applied during the off period 1 is the same as the voltage for turning off the switching element.

Further, the present invention is, for example, the above-mentioned liquid crystal panel driving method, wherein one of the two types of compensation voltages is the same as the voltage for turning off the switching element.

The present invention is also the above-mentioned liquid crystal panel driving method, for example, in which the voltage applied during the off period 2 is the same as the compensation voltage applied during the compensation period.

Therefore, according to the present invention, it is possible to apply a substantially uniform voltage over the entire screen even when driving by thinning out, and an effective effect that a uniform image can be displayed can be obtained.

[0069]

As is apparent from the above description,
INDUSTRIAL APPLICABILITY The present invention has an advantage that higher display quality can be obtained when performing thinning display on a liquid crystal panel.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a gate signal application timing of a liquid crystal display device according to a first embodiment of the present invention.

FIG. 2 is an equivalent circuit diagram of the liquid crystal display device according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a schematic waveform of a gate signal of a conventional liquid crystal display device.

FIG. 4 is an explanatory diagram of a gate signal application timing of the liquid crystal display device according to the second embodiment of the present invention.

FIG. 5 is an explanatory diagram of gate signal application timing of the liquid crystal display device according to the third embodiment of the present invention.

FIG. 6 is an explanatory diagram of a gate signal application timing of a conventional liquid crystal display device.

[Explanation of symbols]

21-23 Gate wiring 24 source wiring 25 common electrode 26 TFT 27 storage capacity 28 Liquid crystal element

Claims (9)

[Claims] 1. A plurality of switching elements provided corresponding to intersections of a plurality of source wirings for inputting an image data signal to be displayed and a plurality of gate wirings for inputting a predetermined gate signal. A plurality of liquid crystal elements connected to the predetermined source wiring via the switching element, and a plurality of capacitive elements provided between the liquid crystal element and the gate wiring adjacent to the liquid crystal element. A liquid crystal display method for driving a liquid crystal panel, which is originally necessary in thinning display performed when the number of gate wirings originally required to perform the display is larger than the total number of gate wirings of the liquid crystal panel. In the period in which the image data signal corresponding to the gate wiring to be thinned out among the various gate wirings is input, an electric power for turning on the switching element is supplied. The liquid crystal display method of neither applied to any of the gate lines of the liquid crystal panel. 2. A capacitor using the capacitance element after a predetermined period from an ON period for turning on a switching element corresponding to a gate wiring in a preceding stage of a predetermined gate wiring of the liquid crystal panel for performing the thinning-out. A compensation period is provided for applying a compensation potential for performing the coupling drive to the preceding gate wiring, and the predetermined period corresponds to the gate wiring to be thinned out of the originally necessary gate wiring. The liquid crystal display method according to claim 1, wherein an image data signal is input to the source wiring. 3. The liquid crystal display according to claim 2, wherein a potential substantially equal to a reference potential for turning off a switching element corresponding to the gate wiring in the preceding stage is applied to the gate wiring in the preceding stage during the predetermined period. Method. 4. The compensation potential is two kinds of potentials that are alternately used for each field, and immediately after an ON period for turning on a switching element corresponding to the preceding gate wiring, 4. The liquid crystal display method according to claim 3, wherein a period for applying a lower one of the two kinds of potentials to the gate wiring in the preceding stage is provided. 5. The period for applying a potential equal to the reference potential to the gate wiring of the preceding stage is provided immediately after the ON period for turning on the switching element corresponding to the gate wiring of the preceding stage. The liquid crystal display method described. 6. The compensating potential is two types of potentials that are alternately used for each field, and one potential of the two types of potentials is equal to the reference potential. LCD display method. 7. A plurality of switching elements provided corresponding to intersections of a plurality of source wirings for inputting image data signals to be displayed and a plurality of gate wirings for inputting predetermined gate signals. A plurality of liquid crystal elements connected to the predetermined source wiring via the switching element, and a plurality of capacitance elements provided between the liquid crystal element and the gate wiring adjacent to the liquid crystal element. A liquid crystal display device for driving a liquid crystal panel, which is originally required in thinning display performed when the number of gate wirings originally required to perform the display is larger than the total number of gate wirings of the liquid crystal panel. In the period in which the image data signal corresponding to the gate wiring to be thinned out among the various gate wirings is input, an electric power for turning on the switching element is supplied. The liquid crystal display device but that does not applied to any of the gate lines of the liquid crystal panel. 8. The thinned display in the liquid crystal display method according to claim 1, wherein the number of gate lines originally required to perform the display is greater than the total number of gate lines of the liquid crystal panel. A potential for turning on the switching element is applied to any of the gate wirings of the liquid crystal panel during a period in which an image data signal corresponding to the gate wiring to be thinned out of necessary gate wirings is input. A program that causes a computer to execute steps that are not applied. 9. The thinned display of the liquid crystal display method according to claim 1, wherein the number of gate wirings originally required to perform the display is larger than the total number of gate wirings of the liquid crystal panel. A potential for turning on the switching element is applied to any of the gate wirings of the liquid crystal panel during a period in which an image data signal corresponding to the gate wiring to be thinned out of necessary gate wirings is input. A medium carrying a program for causing a computer to execute a non-applying step, the medium being processable by the computer.