CN112150979B - Liquid crystal display device and driving method thereof - Google Patents
Liquid crystal display device and driving method thereof Download PDFInfo
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- CN112150979B CN112150979B CN202011143319.1A CN202011143319A CN112150979B CN 112150979 B CN112150979 B CN 112150979B CN 202011143319 A CN202011143319 A CN 202011143319A CN 112150979 B CN112150979 B CN 112150979B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3614—Control of polarity reversal in general
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Abstract
The invention provides a liquid crystal display device and a driving method thereof, and relates to the technical field of display, wherein the liquid crystal display device comprises a control module and a display panel, the display panel comprises a plurality of pixels, the display panel is provided with a plurality of display stages, and each display stage comprises at least one display period; the control module is configured to provide a drive signal for each pixel based on a target gray scale and a saturation voltage of each pixel in each display period; wherein, for any one of the at least one pixel, the control module provides the pixel with the driving signal based on different saturation voltages in the display periods of two adjacent display phases. The invention can improve the problem of display afterimage while keeping higher transmittance.
Description
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal display device and a driving method thereof.
Background
Thin film transistor liquid crystal displays (TFT-LCDs) are a product that combines microelectronics technologies with liquid crystal display technologies. With the recent pursuit of the definition of a screen and the fineness of display, a display having a resolution of 8K has become a mainstream direction of current research. However, the display having 8K resolution has high pixel density (Pixels Per inc, PPI) and small sub-pixel volume, resulting in low transmittance and high power consumption of the product.
At present, the negative liquid crystal display can improve the transmittance of a product to a certain extent, but because the negative liquid crystal has slow response time, when the display screen is changed after the display of a long-time fixed screen, the previous screen cannot disappear immediately, and therefore, a serious afterimage phenomenon exists.
Disclosure of Invention
The present invention is directed to at least one of the problems of the prior art, and provides a liquid crystal display device and a driving method thereof.
In order to achieve the above object, the present invention provides a liquid crystal display device, comprising a control module and a display panel, wherein the display panel comprises a plurality of pixels, the display panel has a plurality of display phases, and each display phase comprises at least one display period;
the control module is configured to provide a drive signal to each of the pixels based on a target gray scale and a saturation voltage of each of the pixels in each of the display periods;
wherein, for any one of at least one of the pixels, in the display periods of two adjacent display phases, the control module provides the driving signal for the pixel based on the different saturation voltages.
Alternatively, for any one of the pixels, the polarity of the driving signal supplied to the pixel is alternated for a plurality of consecutive display periods.
Optionally, two adjacent pixels include a first pixel and a second pixel, and in any one of the display periods, the saturation voltage corresponding to the first pixel is different from the saturation voltage corresponding to the second pixel.
Optionally, the control module comprises a first signal generation unit and a second signal generation unit;
the first signal generating unit is configured to supply the driving signal to the first pixel in accordance with a target gray scale and a first saturation voltage of the first pixel in the display period of an ith display phase, and to supply the driving signal to the second pixel in accordance with a target gray scale and a first saturation voltage of the second pixel in the display period of an (i + 1) th display phase;
the second signal generating unit is configured to supply the driving signal to the second pixel according to a target gray scale and a second saturation voltage of the second pixel in the display period of the ith display phase, and supply the driving signal to the first pixel according to a target gray scale and a second saturation voltage of the first pixel in the display period of the (i + 1) th display phase;
wherein the first saturation voltage is greater than the second saturation voltage.
Optionally, the pixel includes a liquid crystal layer and a driving electrode layer disposed on at least one side of the liquid crystal layer, the driving electrode layer is configured to provide a driving electric field for the liquid crystal layer according to the driving signal, and the driving electric field is configured to drive liquid crystals in the liquid crystal layer to deflect;
and the liquid crystal in the liquid crystal layer is negative liquid crystal.
Optionally, the duration of the display phase is set between 5s and 20 s.
Optionally, the first saturation voltage is set between 6V and 9V, and the second saturation voltage is set between 4V and 7V.
The present invention also provides a driving method applied to the liquid crystal display device, wherein the driving method comprises:
providing a drive signal for each of the pixels based on a target gray scale and a saturation voltage of each of the pixels in each of the display periods;
wherein, for any one of at least one of the pixels, in the display periods of two adjacent display phases, the control module provides the driving signal for the pixel based on the different saturation voltages.
Alternatively, for any one of the pixels, the polarity of the driving signal supplied to the pixel is alternated for a plurality of consecutive display periods.
Optionally, two adjacent pixels include a first pixel and a second pixel, and in any one of the display periods, the saturation voltage corresponding to the first pixel is different from the saturation voltage corresponding to the second pixel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention;
FIG. 2 is a timing diagram of the saturation voltage and the common voltage at different stages according to an embodiment of the present invention;
fig. 3a and 3b are schematic diagrams illustrating that the control module provides the driving signals for the pixels based on the same saturation voltage in the display period of one display phase;
fig. 4a and 4b are schematic diagrams illustrating the control module providing the driving signals to the pixels based on different saturation voltages in the display period of one display phase.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
Unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In one example, a liquid crystal display device is provided, which includes a display panel including a plurality of pixels and a control module configured to provide driving signals to the plurality of pixels according to a target gray scale and a saturation voltage. In this example, the pixel includes a liquid crystal layer and a driving electrode layer configured to provide a driving electric field to the liquid crystal layer according to a driving voltage to drive liquid crystal deflection in the liquid crystal layer. The saturation voltage is a voltage which can enable the liquid crystal layer to reach the maximum transmittance in the driving signals provided by the control module to the pixels, taking the target gray scale of the pixels as 0-255 as an example, when the target gray scale of the pixels is 255, the voltage of the driving signals is 7.8V, the voltage of the driving signals is reduced along with the reduction of the target gray scale, and the reduced value is obtained by calculating according to the mapping relation between the target gray scale and the voltage by taking 7.8V as a reference. Then, the saturation voltage corresponding to the driving signal is 7.8V.
However, providing a drive signal to the pixel based on the saturation voltage of 7.8V may cause a large degree of ion accumulation in the liquid crystal layer, thereby causing slow response of liquid crystal in the liquid crystal layer, and when the same picture is displayed for a long time and another picture is displayed, an afterimage problem may occur. Table 1 shows the relationship between the display screen duration and the afterimage level and the vanishing gray scale, and it can be seen from table 1 that the line afterimage level is higher than 3 in most cases, and the vanishing gray scales of the surface afterimage and the line afterimage are both low, and the afterimage problem is serious.
TABLE 1
In another example, the saturation voltage can be reduced to 5.8V, so that the ion concentration in the liquid crystal layer can be reduced, thereby improving the problem of display afterimage. However, the decrease in saturation voltage causes a decrease in transmittance of the liquid crystal layer, and the transmittance reaches only 94%, which leads to an increase in power consumption of the liquid crystal display device.
In view of the above, an embodiment of the present invention provides a liquid crystal display device, where fig. 1 is a schematic structural diagram of the liquid crystal display device provided by the embodiment of the present invention, and fig. 2 is a timing diagram of a saturation voltage and a common voltage at different stages provided by the embodiment of the present invention, where the saturation voltage is Vop and the common voltage is Vcom, and as shown in fig. 1 and fig. 2, the liquid crystal display device includes a control module 1 and a display panel, the display panel includes a plurality of pixels P, the display panel has a plurality of display stages T, and each display stage T includes at least one display period T'. The control block 1 is configured to supply a driving signal to each pixel P based on the target gray scale and the saturation voltage of each pixel P in each display period T'. Wherein, for any one of the at least one pixel P, in the display period T' of two adjacent display periods T, the control module 1 provides the pixel P with the driving signal based on different saturation voltages.
Specifically, the display panel includes a plurality of pixels P (e.g., red pixels R, blue pixels B, or green pixels G) that are grouped into a plurality of repeating groups, each of which includes a plurality of pixels P. The saturation voltage is an absolute value of the voltage, and the different saturation voltages are different in magnitude of the absolute value of the saturation voltage. The pixel P includes a liquid crystal layer and a driving electrode layer configured to provide a driving electric field to the liquid crystal layer according to a driving voltage to drive liquid crystal deflection in the liquid crystal layer. The display period T ' refers to a period for displaying one frame of picture, and for example, for any one display period T ', the display period T ' should have a data writing phase and a light emitting phase, and the like. The duration of the display period T may be determined according to actual needs, so that a plurality of display periods T ' may be included, for example, the duration of the display period T may be set to 10 seconds, and if each display period T ' is 1 second, the display period T includes 10 display periods T '. It is to be understood that the above description of displaying the duration of the phase T is only an exemplary illustration, and the duration of displaying the phase T is not limited to the embodiment of the present invention.
In the embodiment of the present invention, in two adjacent display periods T, since the control module 1 provides the driving signals for the pixels P based on different saturation voltages, the control module 1 can provide the driving signals with different magnitudes for the pixels P in the two adjacent display periods T, so that the pixels P are driven by the driving signals generated based on the smaller saturation voltage in the display period T' of one of the display periods T, and the problem of display image retention can be solved by the driving signals generated based on the smaller saturation voltage; meanwhile, since the pixel P is driven by the driving signal generated based on the large saturation voltage in the display period T' of the other display period T, the liquid crystal layer of the pixel P can also be maintained at a high transmittance.
In summary, the liquid crystal display device of the present invention can improve the problem of display image retention while maintaining a high transmittance.
In some specific embodiments, the pixel P includes a liquid crystal layer and a driving electrode layer disposed on at least one side of the liquid crystal layer, the driving electrode layer is used for providing a driving electric field for the liquid crystal layer according to a driving signal, and the driving electric field is used for driving liquid crystal in the liquid crystal layer to deflect. In the embodiment of the invention, the liquid crystal in the liquid crystal layer is negative liquid crystal, and the negative liquid crystal can realize higher transmittance compared with positive liquid crystal, so that the power consumption of the liquid crystal display device is reduced.
In some embodiments, for any one pixel P, the polarity of the driving signal supplied to the pixel P is alternated in a plurality of consecutive display periods T', so as to avoid the polarization of the liquid crystal in the liquid crystal layer, and further improve the image sticking problem of the liquid crystal display device.
In some embodiments, for any one of the two adjacent display periods T, in which the display period T' is, the control module 1 may provide the driving signals for all the pixels P in the display panel based on the same saturation voltage. For example, fig. 3a and 3b are schematic diagrams illustrating that the control module provides the driving signals to the pixels based on the same saturation voltage in the display period of one display phase, where the display phases T shown in fig. 3a and 3b are two adjacent display phases T, taking the display phase T shown in fig. 3a as the previous display phase T and the display phase T shown in fig. 3b as the next display phase T as an example, the control module 1 may provide the driving signals to all the pixels P in the display panel based on the first saturation voltage (e.g. 7.8V) in the display period T 'of the previous display phase T, and the control module 1 may provide the driving signals to all the pixels P in the display panel based on the second saturation voltage (e.g. 5.8V) in the display period T' of the next display phase T.
In other embodiments, for any one of the two adjacent display periods T, the control module 1 may provide the driving signals for the plurality of pixels P in the display panel based on different saturation voltages during the display period T'. Specifically, fig. 4a and 4b are schematic diagrams illustrating that the control module provides the driving signals to the pixels based on different saturation voltages in a display period of a display phase, where the display phases T shown in fig. 4a and 4b are two adjacent display phases T, taking the display phase T shown in fig. 4a as a previous display phase T and the display phase T shown in fig. 4b as a next display phase T as an example, two adjacent pixels P include a first pixel P1 and a second pixel P2, and in the embodiment of the present invention, the two adjacent pixels P are arranged in an array, and the two adjacent pixels P refer to two pixels P adjacent to each other in a row direction or a column direction of the pixels P. In a display period T 'of any one display phase T, the saturation voltage corresponding to the first pixel P1 is different from the saturation voltage corresponding to the second pixel P, that is, in the display period T' of the previous display phase T, the control module 1 may provide the driving signal for the first pixel P1 in the display panel based on the first saturation voltage (e.g. 7.8V), and provide the driving signal for the second pixel P2 in the display panel based on the second saturation voltage (e.g. 5.8V); in a display period T' of the next display period T, the control module 1 may provide the driving signal to the first pixel P1 in the display panel based on the second saturation voltage and provide the driving signal to the second pixel P2 in the display panel based on the first saturation voltage.
In this way, for each row/column of pixels P, in the display period of each display phase, the control module 1 may provide the driving signal for the row/column of pixels P based on different saturation voltages, and for each pixel P, the time for which the control module 1 provides the driving signal for the pixel P based on the first saturation voltage is the same as the time for which the driving signal is provided for the pixel P based on the second saturation voltage, so that the display brightness of the display periods of two adjacent display phases may be made to be close to the same, and the problem of display flicker is avoided.
The following describes a specific operation process of the liquid crystal display device according to the embodiment of the present invention. In some embodiments, the control module 1 includes a first signal generation unit Gamma1 and a second signal generation unit Gamma 2.
The first signal generating unit Gamma1 is configured to supply a driving signal to the first pixel P1 according to a target gray scale and a first saturation voltage of the first pixel P1 in a display period T 'of an i-th display phase T, and to supply a driving signal to the second pixel P according to a target gray scale and a first saturation voltage of the second pixel P in a display period T' of an i + 1-th display phase T.
The second signal generating unit Gamma2 is configured to supply a driving signal to the second pixel P according to a target gray scale and a second saturation voltage of the second pixel P in a display period T 'of the ith display period T, and to supply a driving signal to the first pixel P1 according to a target gray scale and a second saturation voltage of the first pixel P1 in a display period T' of the (i + 1) th display period T.
Wherein the first saturation voltage is greater than the second saturation voltage.
In the embodiment of the present invention, the first signal generating unit Gamma1 supplies a driving signal to the first pixel P1 or a driving signal to the second pixel P2, and the second signal generating unit Gamma2 supplies a driving signal to the first pixel P1 or a driving signal to the second pixel P2, which may be controlled by a polarity inversion signal (POL), for example, when the polarity inversion signal is at a high level, the first signal generating unit Gamma1 supplies a driving signal to the first pixel P1 according to a target gray scale of the first pixel P1 and a first saturation voltage, and the second signal generating unit Gamma2 supplies a driving signal to the second pixel P2 according to a target gray scale of the second pixel P2 and a second saturation voltage; when the polarity inversion signal is at a low level, the second signal generating unit Gamma2 supplies a driving signal to the first pixel P1 according to the target gray scale and the second saturation voltage of the first pixel P1, and the first signal generating unit Gamma1 supplies a driving signal to the second pixel P2 according to the target gray scale and the first saturation voltage of the second pixel P2.
In the embodiment of the present invention, a plurality of columns of data signal lines DataL and a plurality of rows of scanning signal lines GateL are disposed on the display panel, each row of scanning signal lines GateL is connected to the pixels P in the same row, each column of data signal lines DataL is connected to the pixels P in the same column, and for each column of pixels P, two adjacent pixels P are connected to different data signal lines DataL. For example, in the 2a-1 column of pixels P, the 2b-1 row of pixels P is connected to the 2a-1 column of data signal lines DataL, and the 2b row of pixels P is connected to the 2a column of data signal lines DataL; in the 2a column of pixels P, the 2b-1 row of pixels P is connected to the 2a column data signal line DataL, and the 2b row of pixels P is connected to the 2a +1 column data signal line DataL.
In some embodiments, the duration of the display period T is set between 5s and 20s, for example 10s, the first saturation voltage is set between 6V and 9V, for example 7.8V, and the second saturation voltage is set between 4V and 7V, for example 5.8V. Thus, the transmittance of the liquid crystal layer in the pixel P can be increased as much as possible while effectively reducing the problem of the residual image.
Specifically, table 2 is a table of the relationship between the duration of the display frame, the afterimage level and the vanishing gray scale of the lcd device according to the embodiment of the present invention, and it can be seen from table 2 that, with the lcd device according to the embodiment of the present invention, the line afterimage level is lower than 3, and the vanishing gray scales of the line afterimage and the surface afterimage are higher than those in table 1, so that the embodiment of the present invention can significantly improve the problem of the display afterimage. Meanwhile, according to the test result, the transmittance of the liquid crystal layer of the liquid crystal display device provided by the embodiment of the invention can reach 97%, so that the power consumption of the liquid crystal display device can be reduced.
TABLE 2
The present invention also provides a driving method applied to the liquid crystal display device, wherein the driving method comprises:
in each display period, a drive signal is supplied to each pixel based on a target gray scale and a saturation voltage of each pixel.
Wherein, for any one of the at least one pixel, the control module provides the pixel with the driving signal based on different saturation voltages in the display periods of two adjacent display phases.
In the embodiment of the invention, in two adjacent display stages, the control module provides the driving signals for the pixels based on different saturation voltages, so that the control module can provide the driving signals with different sizes for the pixels in the two adjacent display stages, so that the display period of the pixels in one of the display stages is driven by the driving signals generated based on the smaller saturation voltage, and the problem of display afterimage can be solved by the driving signals generated based on the smaller saturation voltage; meanwhile, since the pixel is driven by the drive signal generated based on the large saturation voltage in the display period of the other display stage, the liquid crystal layer of the pixel can also be kept at a high transmittance.
In conclusion, the driving method of the present invention can improve the problem of display image retention while maintaining a high transmittance.
In some embodiments, for any one pixel, the polarity of the drive signal provided to the pixel alternates over successive display periods.
In some embodiments, the two adjacent pixels include a first pixel and a second pixel, and in any one display period, the saturation voltage corresponding to the first pixel is different from the saturation voltage corresponding to the second pixel.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (6)
1. The liquid crystal display device is characterized by comprising a control module and a display panel, wherein the display panel comprises a plurality of pixels, the display panel is provided with a plurality of display stages, and each display stage comprises at least one display period;
the control module comprises a first signal generation unit and a second signal generation unit;
the first signal generating unit is configured to supply a driving signal to a first pixel according to a target gray scale and a first saturation voltage of the first pixel in the display period of an ith display phase, and supply the driving signal to a second pixel according to a target gray scale and the first saturation voltage of the second pixel in the display period of an (i + 1) th display phase;
the second signal generating unit is configured to supply the driving signal to the second pixel according to a target gray scale and a second saturation voltage of the second pixel in the display period of the ith display phase, and supply the driving signal to the first pixel according to a target gray scale and a second saturation voltage of the first pixel in the display period of the (i + 1) th display phase;
the first pixel and the second pixel are two adjacent pixels, and the first saturation voltage is greater than the second saturation voltage.
2. The liquid crystal display device according to claim 1, wherein a polarity of the drive signal supplied to any one of the pixels is changed alternately in a plurality of consecutive display periods.
3. The liquid crystal display device according to claim 1 or 2, wherein the pixel includes a liquid crystal layer and a driving electrode layer provided on at least one side of the liquid crystal layer, the driving electrode layer being configured to provide a driving electric field for the liquid crystal layer according to the driving signal, the driving electric field being configured to drive liquid crystal deflection in the liquid crystal layer;
and the liquid crystal in the liquid crystal layer is negative liquid crystal.
4. A liquid crystal display device as claimed in claim 1 or 2, characterized in that the duration of the display phase is set between 5s and 20 s.
5. The liquid crystal display device according to claim 1, wherein the first saturation voltage is set to 6V to 9V, and the second saturation voltage is set to 4V to 7V.
6. A driving method applied to the liquid crystal display device according to any one of claims 1 to 5, characterized in that the driving method comprises:
providing the driving signal for the first pixel according to a target gray scale and a first saturation voltage of the first pixel in the display period of the ith display stage, and providing the driving signal for the second pixel according to a target gray scale and a first saturation voltage of the second pixel in the display period of the (i + 1) th display stage;
providing the driving signal for the second pixel according to a target gray scale and a second saturation voltage of the second pixel in the display period of the ith display stage, and providing the driving signal for the first pixel according to the target gray scale and the second saturation voltage of the first pixel in the display period of the (i + 1) th display stage;
the first pixel and the second pixel are two adjacent pixels, and the first saturation voltage is greater than the second saturation voltage.
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