Display device and driving method thereof

Abstract

The present application discloses a display device and a driving method thereof, and relates to the field of display technology. The display device includes: a backlight module; a light-controlling film layer, the light-controlling film layer includes an electro-transparent film material, the light-controlling film layer is located on the light-emitting side of the backlight module, and the light-controlling film layer includes at least two light-controlling partitions, each light-controlling partition is respectively connected to a corresponding different voltage end; a liquid crystal display panel is located on the light-emitting side of the backlight module. According to the embodiment of the present application, the dynamic smear problem existing in the liquid crystal display device can be improved, and residual red can be avoided, and the high color gamut requirements of the product can be met.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular, relates to a display device and a driving method thereof. Background Art

[0002] The response time of an LCD panel refers to the time required for the liquid crystal molecules in the LCD panel to switch from one angle to another. Currently, when the response time of an LCD panel is long, the LCD panel has the problem of dynamic image smear. At the same time, when the blanking backlight unit (BLU) is matched with the red-green (RG) backlight, there will be a residual red problem, which cannot meet the high color gamut requirements of the product. Summary of the invention

[0003] The embodiments of the present application provide a display device and a driving method thereof, which can improve the problem of dynamic ghosting of a liquid crystal display panel and the problem of being unable to meet the high color gamut requirements of the product.

[0004] On the one hand, an embodiment of the present application provides a display device, including:

[0005] Backlight module;

[0006] A light-controlling film layer, the light-controlling film layer comprises an electro-transparent film material, the light-controlling film layer is located on the light-emitting side of the backlight module, and the light-controlling film layer comprises at least two light-controlling partitions, each light-controlling partition is respectively connected to a corresponding different voltage end;

[0007] The liquid crystal display panel is located on the light-emitting side of the backlight module.

[0008] On the other hand, based on the same inventive concept, an embodiment of the present application provides a method for driving a display device, which is applied to the display device of the above embodiment; the driving method includes:

[0009] For any light control zone, in at least one frame of the display device, a control signal is applied to the light control zone within a first time length, and the application of the control signal to the light control zone is stopped within a second time length; wherein, the first time lengths corresponding to at least two light control zones are different, and the second time lengths corresponding to at least two light control zones are different.

[0010] According to the display device and driving method thereof provided by the embodiment of the present application, at least two light control partitions are set between the backlight module and the liquid crystal display panel. For each light control partition, the working timing corresponding to the light control partition can be used to control whether the light emitted by the backlight module can reach the liquid crystal display panel through the light control partition, thereby controlling the duration of the light emitted by the backlight module to reach the liquid crystal display panel relative to the duty cycle within a certain duration, thereby optimizing the dynamic drag while improving the residual red problem and meeting the high color gamut requirements of the product. Specifically, on the one hand, the light control partition can be controlled to block the light emitted by the backlight module through the working timing corresponding to the light control partition, shortening the time when the liquid crystal display panel lights up, thereby improving the problem of dynamic drag on the liquid crystal display panel; on the other hand, during the time period when the backlight module is equipped with the RG backlight and residual red appears, the light control partition can be controlled to block the light emitted by the backlight module through the working timing corresponding to the light control partition, thereby improving the residual red problem and meeting the high color gamut requirements of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0012] Figure 1 A schematic diagram showing a structure of a display device provided in an embodiment of the present application is shown;

[0013] Figure 2 A schematic diagram showing a structure of a backlight module in a display device provided in an embodiment of the present application is shown;

[0014] Figure 3 Another schematic diagram showing the structure of the display device provided by the embodiment of the present application is shown;

[0015] Figure 4 A schematic diagram showing a signal timing sequence of each light control subarea of ​​a display device provided in an embodiment of the present application;

[0016] Figure 5 Another structural schematic diagram of a display device provided in an embodiment of the present application is shown;

[0017] Figure 6 A schematic block diagram showing a process of a driving method for a display device provided in an embodiment of the present application;

[0018] Figure 7 Another schematic block diagram showing the process of a method for driving a display device provided in an embodiment of the present application;

[0019] Figure 8A schematic diagram showing the effect of a forward scanning method of light control partitions of a display device provided in an embodiment of the present application;

[0020] Fig. 9 A schematic diagram showing the effect of combining the forward scanning method and the reverse scanning method of the light control partitions of the display device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0023] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0024] Before explaining the technical solutions provided by the embodiments of the present application, in order to facilitate the understanding of the embodiments of the present application, the present application first specifically describes the problems existing in the related technology.

[0025] The inventors have discovered that, on the one hand, due to the long response time of the LCD panel, when the backlight module is turned on, the liquid crystal in the LCD panel cannot be completely deflected, resulting in a dynamic ghosting problem in the LCD panel; on the other hand, due to the characteristics of the RG lamp phosphor, the residual red time of the RG lamp is 20ms, and the backlight module mode is matched with the RG backlight, there will be a residual red problem, which cannot meet the high color gamut requirements of the product.

[0026] In order to solve the problems in the prior art, the embodiments of the present application provide a display device and a driving method thereof. The display device provided by the embodiments of the present application is first introduced below.

[0027] Figure 1 A schematic diagram of the structure of a display device provided in an embodiment of the present application is shown.

[0028] like Figure 1 As shown, the display device 100 provided in the embodiment of the present application may include a backlight module 10 , a light control film layer 20 and a liquid crystal display panel 30 .

[0029] The backlight module 10 can be used to provide a backlight source with sufficient brightness and uniform distribution for the liquid crystal display panel 30. The backlight module 10 can use LED (Light-Emitting Diode) as a light source.

[0030] The backlight module 10 provided in the embodiment of the present application may be a direct-type backlight module. Figure 2 FIG. 1 is a schematic diagram showing a structure of a backlight module 10 in a display device provided in an embodiment of the present application. Figure 2 As shown, the backlight module 10 may include a substrate 11 and a plurality of light emitting devices 12 disposed on a surface of the substrate 11. For example, the light emitting devices may be lamp beads. The working process of the backlight module 10 may be: the plurality of lamp beads in the backlight module 10 emit light simultaneously to form a surface light source, and the surface light source is provided to the liquid crystal display panel 30.

[0031] The direct-type backlight module provided in the embodiment of the present application is composed of only a substrate 11 and a plurality of light-emitting devices 12, does not require a light guide plate, and has a simple structure. At the same time, since the plane where the plurality of light-emitting devices in the direct-type backlight module are located is parallel to the plane where the liquid crystal display panel 30 is located, the surface light source formed by the light emitted by the plurality of light-emitting devices can completely reach the liquid crystal display panel 30, and the utilization rate of the surface light source is high.

[0032] In the embodiment of the present application, the backlight module 10 may also be an edge-entry backlight module. The edge-entry backlight module may include a light guide plate (not shown in the figure) and a plurality of light-emitting elements (not shown in the figure) arranged on the side of the light guide plate. The use of an edge-entry backlight module can reduce costs and reduce the thickness of the display device.

[0033] The light control film layer 20 may include an electro-transparent film material, which may be understood as a material that can change the light transmittance under the control of an electrical signal (such as voltage).

[0034] In some optional embodiments, the light transmittance of the light control film layer 20 may be 0% or 100%.

[0035] In this embodiment, by setting the light transmittance of the light control module 20 to 0%, the liquid crystal display panel 30 can be in a dark state; by setting the light transmittance of the light control module 20 to 100%, the liquid crystal display panel 30 can be in a bright state.

[0036] For example, the electrotransparent film material can be a transparent film layer when a voltage is connected, and the light transmittance of the electrotransparent film material is 100%. That is, when the light control film layer 20 is connected to a voltage, the backlight source provided by the backlight module 10 can completely pass through the light control film layer 20 and reach the liquid crystal display panel 30.

[0037] Correspondingly, the electrotransparent film material can be a non-transparent film layer when no voltage is connected, and the light transmittance of the electrotransparent film material is 0%. That is to say, when the light control film layer 20 is not connected to a voltage, the backlight source provided by the backlight module 10 is completely blocked by the light control film layer 20, and no light reaches the liquid crystal display panel 30 at this time.

[0038] During the time period when residual red appears when the backlight module 10 is combined with the RG backlight, the electrical signal provided to the light control film layer 20 can be stopped to control the transmittance of the light control film layer 20 to 0%. The light control film layer 20 can block all the light provided by the backlight module 10, and no light reaches the liquid crystal display panel 30. Therefore, the residual red that appears when the backlight module 10 is combined with the RG backlight will not be displayed on the liquid crystal display panel 30, thereby improving the residual red problem and meeting the high color gamut requirements of the product.

[0039] In some optional embodiments, the electrotransparent film material may include a blue phase liquid crystal film, which has a sub-millisecond response time, which is shorter than the response time of the liquid crystal in the liquid crystal display panel 30 , thereby improving the dynamic smear problem of the liquid crystal display panel 30 .

[0040] Of course, in some other optional implementations, the electro-transparent film material may also include other materials capable of controlling light transmittance through electrical signals in addition to the blue phase liquid crystal film, which is not limited here.

[0041] The light control film layer 20 may be located at the light emitting side of the backlight module 10, and the light control film layer 20 may include at least two light control partitions 21, and each light control partition may be respectively connected to a corresponding different voltage terminal 41. For each light control partition, the corresponding different voltage terminal 41 may be controlled to supply power to each light control partition through the corresponding working timing of each light control partition, so as to control whether the light emitted by the backlight module 10 can reach the liquid crystal display panel 30 through the light control partition, and further control the duration of the light emitted by the backlight module 10 to reach the liquid crystal display panel relative to the duty cycle within a certain duration, so as to improve the residual red problem while optimizing dynamic drag, and meet the high color gamut requirements of the product.

[0042] The duty cycle of the time that the light emitted by the backlight module 10 can reach the liquid crystal display panel relative to a certain time period can be the ratio of the time that the light emitted by the backlight module 10 can reach the liquid crystal display panel 30 in one frame time to one frame time. For example, if the duty cycle of the time that the light emitted by the backlight module 10 can reach the liquid crystal display panel relative to a certain time period is 100%, it can be understood that within one frame time, all the light emitted by the backlight module 10 can reach the liquid crystal display panel 30. For another example, if the duty cycle of the time that the light emitted by the backlight module 10 can reach the liquid crystal display panel relative to a certain time period is 20%, it can be understood that within one frame time, 20% of the time, the light emitted by the backlight module 10 can reach the liquid crystal display panel 30.

[0043] Figure 1 and Figure 3 Three light-controlling partitions 21 are shown as an example, and the sizes of the light-controlling partitions 21 are the same, which is not intended to limit the present application. In specific implementations, the number of light-controlling partitions 21 included in the light-controlling film layer 20 can be set according to actual conditions, and the sizes of the light-controlling partitions 21 can be the same or different, which is not limited here. For example, the light-controlling film layer 20 can include four light-controlling partitions 21, and the sizes of the four light-controlling partitions are the same, or it can include seven light-controlling partitions 21, and the sizes of the seven light-controlling partitions 21 are different.

[0044] For example, please refer to Figure 3 and Figure 4 , Figure 3 Another schematic diagram showing the structure of the display device provided by the embodiment of the present application is shown; Figure 4 A signal timing diagram of each light control subarea of ​​the display device provided by the embodiment of the present application is shown. Figure 3 and Figure 4As shown, the light control film layer 20 may include a first light control partition 211, a second light control partition 212, and a third light control partition 213, and the voltage terminal 41 may include a first voltage terminal 411, a second voltage terminal 412, and a third voltage terminal 413. Gate1 to Gate3 may respectively represent the liquid crystal deflection signals of the first light control partition 211 to the third light control partition 213, and Gate1' to Gate3' may respectively represent the control signals of the first light control partition 211 to the third light control partition 213. In other words, Gate1 may represent the liquid crystal deflection signal of the first light control partition 211, Gate2 may represent the liquid crystal deflection signal of the second light control partition 212, and Gate3 may represent the liquid crystal deflection signal of the third light control partition 213; Gate1' may represent the control signal of the first light control partition 211, Gate2' may represent the control signal of the second light control partition 212, and Gate3' may represent the control signal of the third light control partition 213.

[0045] Exemplarily, the liquid crystal deflection signal Gate1 of the first light-control partition 211 can be switched from a cut-off level to a conduction level, and the liquid crystal of the first light-control partition 211 is deflected. After the liquid crystal of the first light-control partition 211 is deflected, the control signal Gate1' of the first light-control partition 211 can be switched from a cut-off level to a conduction level. At this time, the first light-control partition 211 is powered by the first voltage terminal 411, and the light transmittance of the first light-control partition 211 is switched from 0% to 100%, and the light transmittance of the second light-control partition 212 and the third light-control partition 213 is 0%. The liquid crystal deflection signal Gate2 of the second light-control partition 212 can be switched from the cut-off level to the on-level, and the liquid crystal of the second light-control partition 212 is deflected. After the liquid crystal of the second light-control partition 212 is deflected, the control signal Gate2' of the second light-control partition 212 can be switched from the cut-off level to the on-level. At this time, the second light-control partition 212 is powered by the second voltage terminal 412, and the light transmittance of the second light-control partition 212 is switched from 0% to 100%, and the light transmittance of the first light-control partition 211 and the third light-control partition 213 is 0%. In the T3 stage, the liquid crystal deflection signal Gate3 of the third light control partition 213 can be switched from the cut-off level to the on level, and the liquid crystal of the third light control partition 213 is deflected. After the liquid crystal of the third light control partition 213 is deflected, the control signal Gate3' of the third light control partition 213 can be switched from the cut-off level to the on level. At this time, the third light control partition 213 is powered by the third voltage terminal 413, and the light transmittance of the third light control partition 213 is switched from 0% to 100%, and the light transmittance of the first light control partition 211 and the second light control partition 212 is 0%.

[0046] In the embodiments of the present application, the on-level and the off-level are distinguished according to the type of the switching transistor. The on-level refers to the level that can control the switching transistor to be turned on, and the off-level refers to the level that can control the switching transistor to be turned off. For example, when the switching transistor is a P-type transistor, the on-level is a low level and the off-level is a high level; when the switching transistor is an N-type transistor, the on-level is a high level and the off-level is a low level. The embodiments of the present application are all described by taking the switching transistor as an N-type transistor as an example, that is, in the embodiments of the present application, the on-levels are all high levels and the off-levels are all low levels.

[0047] The above example takes the light of the backlight module 10 passing through the first light control partition 211, the second light control partition 212 and the third light control partition 213 in sequence as an example. In other examples, after the liquid crystal of the first light control partition 211, the liquid crystal of the second light control partition 212 and the liquid crystal of the third light control partition 213 are all deflected, the control signals Gate1'~Gate3' can be controlled to switch from the cut-off level to the on-level at the same time, and the first light control partition 211, the second light control partition 212 and the third light control partition 213 are respectively powered through the first voltage terminal 411, the second voltage terminal 412 and the third voltage terminal 413, so that the light transmittance of the first light control partition 211, the light transmittance of the second light control partition 212 and the light transmittance of the third light control partition 213 are all switched from 0% to 100%, and then the light of the backlight module 10 can also pass through the first light control partition 211, the second light control partition 212 and the third light control partition 213 at the same time.

[0048] Optionally, by connecting each light-controlling subarea 211 to the same voltage terminal 41 , the light transmittance of each light-controlling subarea can be controlled simultaneously, and the number of voltage terminals 41 can be reduced, thereby reducing the cost of the driving circuit.

[0049] The liquid crystal display panel 30 may be located at the light-emitting side of the backlight module 10 , so that the light from the backlight module 10 can selectively reach the liquid crystal display panel 30 .

[0050] According to the display device provided by the embodiment of the present application, at least two light control partitions are set between the backlight module and the liquid crystal display panel. For each light control partition, the working timing corresponding to the light control partition can be used to control whether the light emitted by the backlight module can reach the liquid crystal display panel through the light control partition, thereby controlling the duration of the light emitted by the backlight module to reach the liquid crystal display panel relative to the duty cycle within a certain duration, thereby optimizing the dynamic drag while improving the residual red problem and meeting the high color gamut requirements of the product. Specifically, on the one hand, the light control partition can be controlled to block the light emitted by the backlight module through the working timing corresponding to the light control partition, shortening the time when the liquid crystal display panel lights up, thereby improving the problem of dynamic drag on the liquid crystal display panel; on the other hand, during the time period when the backlight module is equipped with the RG backlight and residual red appears, the light control partition can be controlled to block the light emitted by the backlight module through the working timing corresponding to the light control partition, thereby improving the residual red problem and meeting the high color gamut requirements of the product.

[0051] Figure 5 FIG. 2 shows another structural schematic diagram of a display device provided in an embodiment of the present application. Figure 5 As shown, in some optional implementations, the backlight module 10 and the light control film layer 20 may share a driving circuit 40 .

[0052] In this embodiment, the backlight module 10 and the light-controlling film layer 20 share the driving circuit 40 , so that the number of the driving circuits 40 can be reduced, thereby reducing the cost of the driving circuits.

[0053] Exemplarily, the light transmittance of the light control subarea 21 can be controlled by the voltage terminal of the driving circuit 40 , and the backlight module 10 can be driven to emit light by the signal terminal 42 of the same driving circuit 40 .

[0054] In some other optional implementations, the backlight module 10 and the light control film layer 20 may also use different driving circuits to drive the backlight module 10 and the light control film layer 20 .

[0055] In some optional implementations, the backlight module 10 may be disposed in parallel with the light control film layer 20 .

[0056] In this embodiment, by arranging the backlight module 10 and the light-controlling film layer 20 in parallel, compared with arranging the backlight module 10 and the light-controlling film layer 20 in non-parallel, when the light-controlling film layer 20 completely blocks the light emitted by the backlight module 10, the area of ​​the light-controlling film layer 20 can be reduced.

[0057] Optionally, the light control film layer 20 may be arranged in parallel with the liquid crystal display panel 30 .

[0058] Optionally, the backlight module 10 can be laminated with the light control film layer 20, and the light control film layer 20 can be laminated with the liquid crystal display panel 30. In this way, the size of the display device can be reduced by reducing the distance between the backlight module 10 and the light control film layer 20, and reducing the distance between the light control film layer 20 and the liquid crystal display panel 30.

[0059] In some optional embodiments, the orthographic projection of the light control film layer on the liquid crystal display panel 30 overlaps with the orthographic projection of the backlight module 10 on the liquid crystal display panel 30. It can be understood that all the light emitted by the backlight module 10 can reach the light control film layer 20. In this way, through the corresponding working timing of the light control film layer 20, it is possible to control whether the light emitted by the backlight module 10 can reach the liquid crystal display panel 30 through the light control film layer 20, and then control the duration of the light emitted by the backlight module 10 to reach the liquid crystal display panel relative to the duty cycle within a certain duration, so that the residual red problem can be improved while optimizing dynamic drag, and the high color gamut requirements of the product can be met.

[0060] Based on the same inventive concept as the above-mentioned display device, an embodiment of the present application further provides a method for driving a display device. The method for driving a display panel will be described below in conjunction with the accompanying drawings.

[0061] Figure 6 A schematic block diagram showing a process of a method for driving a display device provided in an embodiment of the present application is shown.

[0062] The driving method of the display device provided in the embodiment of the present application can be used to drive the display device in the above embodiment. Figure 6 As shown, the driving method of the display device may include S601.

[0063] S601. For any light control partition, in at least one frame of the display device, a control signal is applied to the light control partition within a first time length, and application of the control signal to the light control partition is stopped within a second time length; wherein, the first time lengths corresponding to at least two light control partitions are different, and the second time lengths corresponding to at least two light control partitions are different.

[0064] Applying a control signal to the light control subarea within the first time period can make the light transmittance of the light control subarea 100% within the first time period. Therefore, the first time period can be understood as the time period during which the light transmittance of the light control subarea is 100%.

[0065] Stopping the application of the control signal to the light control subarea during the second time period can make the light transmittance of the light control subarea 0% during the second time period. Therefore, the second time period can be understood as the time period during which the light transmittance of the light control subarea is 0%.

[0066] The total duration of the first duration and the second duration may be equal to the duration of one frame.

[0067] Exemplarily, the light-control partition may include four light-control partitions. For ease of explanation, the four light-control partitions are recorded as light-control partition a, light-control partition b, light-control partition c, and light-control partition d. The first duration ta1 corresponding to light-control partition a may be different from the first duration tb1 corresponding to light-control partition b, and the first duration ta1 corresponding to light-control partition a may be the same as the first duration tc1 corresponding to light-control partition c and the first duration td1 corresponding to light-control partition d. At this time, the second duration ta2 corresponding to light-control partition a is different from the second duration tb2 corresponding to light-control partition b, and the second duration ta2 corresponding to light-control partition a may be the same as the second duration tc2 corresponding to light-control partition c and the second duration td2 corresponding to light-control partition d.

[0068] Optionally, for the same light control zone, the first durations corresponding to different frames may be equal, and the second durations corresponding to different frames may be equal.

[0069] Exemplarily, for light control zone a, the first time length corresponding to the first frame can be 80% of the time length of one frame, and the second time length corresponding to the first frame can be 20% of the time length of one frame; the first time length corresponding to the second frame can also be 80% of the time length of one frame, and the second time length corresponding to the second frame can be 20% of the time length of one frame.

[0070] Optionally, corresponding to the same light control zone, the first durations corresponding to different frames may be unequal, and the second durations corresponding to different frames may be unequal.

[0071] Exemplarily, for the b light control zone, the first time length corresponding to the first frame can be 80% of the one frame length, and the second time length corresponding to the first frame can be 20% of the one frame length; the first time length corresponding to the second frame can be 60% of the one frame length, and the second time length corresponding to the second frame can be 40% of the one frame length.

[0072] Optionally, a control signal may be applied to each light-controlled subarea through the same voltage terminal at the same time, so as to control each light-controlled subarea to have the same light transmittance in each frame.

[0073] Alternatively, control signals may be applied to each light control subarea through different voltage terminals. For example, control signals may be applied to each control subarea simultaneously through different voltage terminals. For another example, control signals may be applied to each light control subarea in a time-division manner through different voltage control terminals.

[0074] According to the driving method of the display device provided by the embodiment of the present application, at least two light control partitions are set between the backlight module and the liquid crystal display panel. For each light control partition, the working timing corresponding to the light control partition can be used to control whether the light emitted by the backlight module can reach the liquid crystal display panel through the light control partition, thereby controlling the duration of the light emitted by the backlight module to reach the liquid crystal display panel relative to the duty cycle within a certain duration, thereby optimizing the dynamic drag while improving the residual red problem and meeting the high color gamut requirements of the product. Specifically, on the one hand, the light control partition can be controlled to block the light emitted by the backlight module through the working timing corresponding to the light control partition, shortening the time when the liquid crystal display panel lights up, thereby improving the problem of dynamic drag on the liquid crystal display panel; on the other hand, during the time period when the backlight module is equipped with the RG backlight and residual red appears, the light control partition can be controlled to block the light emitted by the backlight module through the working timing corresponding to the light control partition, thereby improving the residual red problem and meeting the high color gamut requirements of the product.

[0075] In some optional embodiments, the first duration may be greater than or equal to the second duration. That is, the duration when the light transmittance of the light-controlled partition is 100% is greater than or equal to the duration when the light transmittance of the light-controlled partition is 0%. In other words, the duration when the liquid crystal display panel is in the bright state is greater than or equal to the duration when the liquid crystal display panel is in the dark state. In this way, the duration when the liquid crystal display panel is in the dark state is shorter, which is not easily noticed by the user, and the display effect of the liquid crystal display panel can be guaranteed.

[0076] For example, the first duration may be 80% of a frame duration, and the second duration may be 20% of a frame duration. For another example, the first duration may be 75% of a frame duration, and the second duration may be 25% of a frame duration.

[0077] In some other optional implementations, the first duration may also be greater than the second duration.

[0078] Exemplarily, the first duration may be 40% of the duration of one frame, and the second duration may be 60% of the duration of one frame.

[0079] In some optional implementations, the first durations corresponding to different frames are equal, and the second durations corresponding to different frames are equal. In this way, the bright state display time and the dark state display time corresponding to different frames are equal, and the display device can improve the display effect of the display panel when displaying different frames.

[0080] The first duration corresponding to the same frame can be understood as the first total duration of all light-controlled subareas in the same frame. The second duration corresponding to the same frame can be understood as the second total duration of all light-controlled subareas in the same frame.

[0081] Exemplarily, the light control film layer may include three light control partitions. In the first frame, the first durations of the three light control partitions are t1, t2, and t3, respectively, and the first duration corresponding to the first frame may be t1+t2+t3. In the first frame, the second durations of the three light control partitions are t4, t5, and t6, respectively, and the second duration corresponding to the first frame may be t4+t5+t6.

[0082] In some other optional implementations, the first durations corresponding to different frames may be unequal, and the second durations corresponding to different frames may be unequal.

[0083] For example, the first duration corresponding to the first frame may be greater than the first duration corresponding to the second frame, in which case the second duration corresponding to the first frame is less than the second duration corresponding to the second frame. For another example, the first duration corresponding to the second frame may be less than the first duration corresponding to the third frame, in which case the second duration corresponding to the second frame is greater than the second duration corresponding to the third frame.

[0084] Figure 7 Another schematic block diagram of the process of driving a display device provided by an embodiment of the present application is shown. In some optional implementations, such as Figure 7 As shown, the driving method of the display device provided in the embodiment of the present application may further include step S602.

[0085] S602: Control the scanning mode of the i-th frame to be the first scanning mode, and control the scanning mode of the j-th frame to be the second scanning mode, where i and j are both integers greater than 0, and i≠j.

[0086] In this embodiment, by combining the first scanning mode and the second scanning mode to scan the target screen, compared with scanning the screen with only one scanning mode, the positions where dynamic ghosting occurs can be dispersed, thereby improving the dynamic ghosting problem at a single position.

[0087] Exemplarily, the target picture may include 20 frames, and 4 frames may be regarded as 1 scanning cycle, so the target picture includes 5 scanning cycles. The scanning mode of the first 3 frames in 1 scanning cycle may be controlled to be the first scanning mode, and the scanning mode of the last frame in 1 scanning cycle may be controlled to be the second scanning mode. The scanning mode of the first 2 frames in 1 scanning cycle may also be controlled to be the first scanning mode, and the scanning mode of the last 2 frames in 1 scanning cycle may be controlled to be the second scanning mode.

[0088] Figure 7 It is exemplarily shown that S602 is before S601. In the embodiment of the present application, S602 may also be after S601.

[0089] In some optional implementations, the first scanning mode may include a forward scanning mode, and the second scanning mode may include a reverse scanning mode.

[0090] In this embodiment, by combining the forward scanning method and the reverse scanning method to scan the target screen, compared with scanning the screen with only one scanning method, the positions where dynamic ghosting occurs can be dispersed, thereby improving the dynamic ghosting problem at a single position.

[0091] The forward scanning mode can be understood as, during the forward scanning, the control signal end of the k-th shift register receives the output signal of the k-1-th shift register. The reverse scanning mode can be understood as, during the reverse scanning, the control signal end of the k-th shift register receives the output signal of the k+1-th shift register. Wherein, k is a positive integer.

[0092] Please also read Figure 8 and Fig. 9 , Figure 8 A schematic diagram showing the effect of a forward scanning method of light control partitions of a display device provided in an embodiment of the present application; Fig. 9 A schematic diagram showing the effect of combining the forward scanning method and the reverse scanning method of the light control partitions of the display device provided in an embodiment of the present application is shown. Figure 8 and Fig. 9 The black rectangles in the image represent motion smear.

[0093] For example, Figure 8 As shown, when two adjacent frames are scanned only in the forward scanning mode, the positions where dynamic smear appears on the LCD panel are concentrated. Figure 8 When two adjacent frames are first scanned in the forward scanning mode and then in the reverse scanning mode, the positions where dynamic smear appears on the LCD panel are scattered Fig. 9 The position of the dotted frame and the position of the solid frame. Figure 8 The locations where dynamic smear occurs are dispersed, which can improve Figure 8 Dynamic ghosting problem at the location of the dotted box in the middle.

[0094] In some optional implementations, i may be an odd number, and j may be an even number.

[0095] For example, the target picture may include 20 frames, and the scanning mode of odd-numbered frames such as 1, 3, 5, 7 and 9 may be controlled to be a forward scanning mode, and the scanning mode of even-numbered frames such as 2, 4, 6, 8 and 10 may be controlled to be a reverse scanning mode. By using the forward scanning mode and the reverse scanning mode for two consecutive frames, the dynamic smear of the previous frame and the dynamic smear of the next frame can be dispersed, thereby correcting the dynamic smear effect of the previous frame.

[0096] In some other optional implementations, i may be an even number, and j may be an odd number.

[0097] In addition, in combination with the driving method of the display device in the above embodiment, the embodiment of the present application may provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the driving methods of the display device in the above embodiment is implemented. According to the embodiment of the present application, the computer readable storage medium may be a non-transitory computer readable storage medium.

[0098] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A display device, characterized in that: include: Backlight module; A light-controlling film layer, the light-controlling film layer comprising an electro-transparent film material, the light-controlling film layer being located at the light-emitting side of the backlight module, and the light-controlling film layer comprising at least two light-controlling partitions, each of which is respectively connected to a corresponding different voltage end, and the light emitted by the backlight module is controlled by the working timing corresponding to the light-controlling partition to reach the liquid crystal display panel through the light-controlling partition, thereby controlling the duration of the light emitted by the backlight module reaching the liquid crystal display panel relative to the duty cycle within a certain duration; The liquid crystal display panel is located on the light-emitting side of the backlight module.

2. The display device according to claim 1, characterized in that The backlight module and the light control film layer share a driving circuit.

3. The display device according to claim 1, characterized in that The backlight module is arranged in parallel with the light control film layer.

4. The display device according to claim 1, characterized in that The electro-transparent film material includes a blue phase liquid crystal film.

5. The display device according to claim 1, characterized in that The light transmittance of the light-controlling film layer is 0% or 100%.

6. The display device according to claim 1, characterized in that: The orthographic projection of the light control film layer on the liquid crystal display panel overlaps with the orthographic projection of the backlight module on the liquid crystal display panel.

7. A method for driving a display device, characterized in that: Used to drive the display device according to any one of claims 1 to 6, the driving method comprising: For any one of the light control zones, in at least one frame of the display device, a control signal is applied to the light control zone within a first time length, and application of the control signal to the light control zone is stopped within a second time length; wherein, the first time lengths corresponding to at least two of the light control zones are different, and the second time lengths corresponding to at least two of the light control zones are different.

8. The method for driving a display device according to claim 7, wherein: The first duration is greater than or equal to the second duration.

9. The method for driving a display device according to claim 7, wherein: The method further comprises: The scanning mode of the i-th frame is controlled to be the first scanning mode, and the scanning mode of the j-th frame is controlled to be the second scanning mode, i, j are both integers greater than 0, and i≠j.

10. The method for driving a display device according to claim 9, characterized in that: The first scanning mode includes a forward scanning mode, and the second scanning mode includes a reverse scanning mode.

11. The method for driving a display device according to claim 9, wherein: i is an odd number and j is an even number.

12. The method for driving a display device according to claim 7, wherein: The first time lengths corresponding to different frames are equal, and the second time lengths corresponding to different frames are equal.

Images