CN116189625A - Display device and driving method thereof - Google Patents

Display device and driving method thereof Download PDF

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Publication number
CN116189625A
CN116189625A CN202310308292.4A CN202310308292A CN116189625A CN 116189625 A CN116189625 A CN 116189625A CN 202310308292 A CN202310308292 A CN 202310308292A CN 116189625 A CN116189625 A CN 116189625A
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Prior art keywords
light source
backlight
light
time
display
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CN202310308292.4A
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CN116189625B (en
Inventor
赵宏伟
陈木清
杨雁
林文鹏
钟彩娇
赖国昌
杨贤艳
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention discloses a display device and a driving method thereof, wherein the display device comprises: a field sequential display panel, a backlight module and a drive controller; the field sequential display panel comprises a plurality of sub-display areas; each sub-display area comprises a plurality of pixel units which are arranged in an array way, wherein each pixel unit comprises liquid crystal and electrodes for controlling the torsion of the liquid crystal; the backlight module comprises a plurality of backlight areas; each backlight area comprises a plurality of light sources with different colors; the light source of the backlight area correspondingly provides backlight for the pixel units of the sub-display area; the drive controller is used for: in one frame of picture time, controlling the light sources with different colors in the same backlight area to emit light in a time-sharing mode, and sequentially controlling the light sources with the same color in different backlight areas to emit light; wherein, the light emitting time of the light sources which are respectively positioned in the adjacent N backlight areas and have different colors is not overlapped; and controlling electrodes in the pixel units to drive the liquid crystal to twist in one frame of picture time so as to enable the pixel units to reach target color brightness.

Description

Display device and driving method thereof
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device and a driving method thereof.
Background
The non-self-luminous display panel, especially the liquid crystal display panel, has the characteristic of low power consumption without providing a complex circuit structure, and is applied to various display devices with low power consumption requirements.
Currently, a backlight module is required for a liquid crystal display panel to provide backlight, and with the development of display technology, a backlight module with a single color light source cannot meet higher display requirements. In the prior art, the backlight module can provide backlight with different colors for the liquid crystal display panel by arranging the light sources with different colors in the backlight module, and at the moment, the liquid crystal display panel can realize color display without arranging a color filter layer in the liquid crystal display panel. However, when the light sources with different colors in the backlight module in the prior art emit light simultaneously, color mixing of the light sources with different colors occurs, so that halation is generated, and the display effect of the picture displayed by the liquid crystal display panel is affected.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a display device and a driving method thereof, which are used for preventing a light source of a backlight module from generating halation, thereby improving the display effect of the display device.
According to an aspect of the present invention, there is provided a display device including:
a field sequential display panel, a backlight module and a drive controller;
the field sequential display panel comprises a plurality of sub-display areas; each sub-display area comprises a plurality of pixel units which are arranged in an array manner, wherein each pixel unit comprises liquid crystal and electrodes for controlling the torsion of the liquid crystal;
the backlight module comprises a plurality of backlight areas which are in one-to-one correspondence with the plurality of sub-display areas; each of the backlight areas includes a plurality of light sources of different colors; the light source of the backlight area correspondingly provides backlight for the pixel units of the sub-display area;
the drive controller is used for:
in a frame of picture time, controlling the light sources with different colors in the same backlight area to emit light in a time-sharing way, and controlling the light sources with the same color in different backlight areas to emit light in sequence; wherein the light emitting time of the light sources which are respectively positioned in the adjacent N backlight areas and have different colors is not overlapped; n is an integer greater than 2;
and controlling electrodes in the pixel units to drive the liquid crystal to twist in one frame of picture time so as to enable the pixel units to reach target color brightness.
According to another aspect of the present invention, there is provided a driving method of a display device for driving the above display device, the driving method of the display device including:
in a frame of picture time, controlling the light sources with different colors in the same backlight area to emit light in a time-sharing way, and controlling the light sources with the same color in different backlight areas to emit light in sequence; wherein the light emitting time of the light sources which are respectively positioned in the adjacent N backlight areas and have different colors is not overlapped; n is an integer greater than 2;
and controlling electrodes in the pixel units to drive the liquid crystal to twist in one frame of picture time so as to enable the pixel units to reach target color brightness.
According to the technical scheme, the light sources with different colors in the same backlight area are controlled to emit light in a time-sharing mode, so that the light emitting time of the light sources with different colors in the same backlight area is not overlapped, and the crosstalk of the light emitted by the light sources with different colors in the same backlight area can be prevented, so that the display luminous color of the display panel is influenced; meanwhile, the light emitting time of the light sources with different colors and respectively positioned in the adjacent N backlight areas is not overlapped, so that the light sources with different colors in the adjacent N backlight areas can be prevented from emitting light simultaneously, halation is generated at the junction between the backlight areas and the backlight areas to influence the display uniformity of the display device, and therefore, after the electrode driving liquid crystal in the pixel unit is twisted, the light with different colors emitted by the light sources in the backlight module can penetrate the corresponding pixel unit, and when the pixel unit reaches the target color brightness, the field sequential display panel accurately presents corresponding color display pictures, and the display effect of the display device can be improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a timing diagram of a backlight module in a field sequential display device according to the prior art;
fig. 2 is a schematic diagram of a film structure of a display device according to an embodiment of the present invention;
fig. 3 is a schematic top view of a field sequential display panel according to an embodiment of the present invention;
fig. 4 is a schematic top view of a backlight module according to an embodiment of the present invention;
fig. 5 is a driving timing chart of a backlight module according to an embodiment of the invention;
FIG. 6 is a driving timing chart of another backlight module according to an embodiment of the invention;
Fig. 7 is a driving timing diagram of a display device according to an embodiment of the present invention;
fig. 8 is a driving timing diagram of another display device according to an embodiment of the present invention;
fig. 9 is a driving timing chart of a backlight module according to another embodiment of the invention;
fig. 10 is a driving timing diagram of still another display device according to an embodiment of the present invention;
fig. 11 is a flowchart of a driving method of a display device according to an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As described in the background art, in the case where the display panel is not provided with the color filter layer, a field sequential driving method is generally adopted, and the display panel is a field sequential display panel. Each pixel unit of the field sequential display panel does not need to be divided into sub-pixels with different colors, and color display can be realized only by controlling light sources with different colors in a backlight module to sequentially emit light in one frame of picture.
In the display time of a frame of picture, a backlight module used for providing backlight for a field sequential display panel comprises a plurality of backlight areas, and light sources with different colors in the same backlight area sequentially emit light in a time-sharing mode, namely, the frame of picture can be divided into a plurality of subframes, backlight with different colors is respectively provided in each subframe, the interval time between the subframes is shorter, and the human eyes can not detect the field intensity change of the subframes, so that the display image recognized by the human eyes is a color image synthesized by pictures with different colors.
For example, fig. 1 is a driving timing chart of a backlight module in a field sequential display device in the prior art, as shown in fig. 1, a first light source, a second light source and a third light source with different colors in a first backlight area emit light in time periods T11', T21' and T31', a second light source and a third light source with different colors in a second backlight area adjacent to the first backlight area emit light in time periods T12', T22 'and T32', a third light source, a first light source, a second light source and a third light source with different colors in a third backlight area adjacent to the second backlight area emit light in time periods T13', T23' and T33', respectively, … …, and a first light source, a second light source and a third light source with different colors in an nth backlight area emit light in time periods T1n', T2n 'and T3n', respectively.
The light sources of different colors in the same backlight area emit light in a time-sharing way, so that crosstalk cannot be formed between the light sources of different colors in the same backlight area, the light sources of different backlight areas emit light sequentially, and the light emitting time of the light sources of the same color in two adjacent backlight areas overlap, so that the driving control time of each backlight area in the backlight module can be shortened; in addition, the light emitting periods of the light sources of different colors in the different backlight areas may also have overlapping, as shown in fig. 1, the light emitting period T21 'of the second light source in the first backlight area overlaps the light emitting period T13' of the first light source in the third backlight area, the overlapping period is T10', the light emitting period T31' of the third light source in the first backlight area overlaps the light emitting period T23 'of the second light source in the third backlight area, and the overlapping period is T20'; therefore, the light sources with different colors respectively located in the first backlight area and the third backlight area can emit light simultaneously in the overlapping time T10 'and T20', and the two backlight areas are closer in distance, so that the light emitted by the light sources of the two backlight areas is mixed in the junction of the light rays to generate halation, thereby influencing the color brightness of the display luminescence at the position, further influencing the display uniformity of the display panel, and failing to meet the display requirement of high display quality.
In order to solve the above-mentioned technical problems, an embodiment of the present invention provides a display device, in which, in a frame of frame time of the display device, a driving controller in the display device can control electrodes of pixel units in a field sequential display panel to drive liquid crystals to twist so as to make the pixel units reach a target color brightness, and time-sharing control light sources of different colors in a same backlight area to emit light, and sequentially control each light source of the same color in different backlight areas to emit light, so that light emission times of the light sources respectively located in N adjacent backlight areas and having different colors do not overlap; n is an integer greater than 2, so that halation caused by overlapping of light emitting time of light sources with different colors in backlight areas with relatively close distances can be prevented, display uniformity of the display device can be improved, and high display requirements of the display device can be met.
The above is the core idea of the invention, and based on the embodiments of the invention, all other embodiments obtained by a person skilled in the art without making any inventive effort are within the scope of the invention. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Fig. 2 is a schematic film structure diagram of a display device according to an embodiment of the present invention, fig. 3 is a schematic top view structure diagram of a field sequential display panel according to an embodiment of the present invention, fig. 4 is a schematic top view structure diagram of a backlight module according to an embodiment of the present invention, and referring to fig. 2 and 3, a display device 100 includes a field sequential display panel 10, where the field sequential display panel 10 includes a plurality of sub-display areas 110; each of the sub-display areas 101 includes a plurality of pixel units P arranged in an array, the pixel units P including liquid crystals C and electrodes E for controlling twisting of the liquid crystals C.
The plurality of sub-display areas 110 may be sequentially arranged in the second direction Y or the first direction X, or may be respectively arranged in an array in the second direction Y and the first direction X, which is not particularly limited in the embodiment of the present invention; the first direction X may be a row direction along the pixel unit P, and the second direction Y may be a column direction of the pixel unit P. For convenience of description, the embodiment of the present invention is exemplified by a case where a plurality of sub-display areas 110 are sequentially arranged along the second direction Y, and in this case, m rows of pixel units P may be included in each sub-display area 110.
For example, the field sequential display panel 10 may include an array substrate 101, a counter substrate 102, and a liquid crystal layer 103 between the array substrate 101 and the counter substrate 102, with the liquid crystal C being located in the liquid crystal layer 103. The array substrate 101 may include an electrode E, where the electrode E may include a pixel electrode E1 and a common electrode E2, and the pixel electrode E1 and the common electrode E2 receive corresponding electrical signals to generate an electric field, and the electric field may drive the liquid crystal C to twist, and the degree of twisting of the liquid crystal C is related to the magnitude of the luminous flux passing through the position where the liquid crystal C is located, so that the color brightness of the pixel unit P may be controlled by controlling the magnitude of the electric field generated by the pixel electrode E1 and the common electrode E2. The counter substrate 102 may include only the color resist structure B, which is a light-shielding color resist to block the position where light is not required to be emitted, and prevent unnecessary light leakage, and at this time, the light transmitted through the liquid crystal layer 103 can directly reach the display surface of the field sequential display panel 10 through the position where the color resist structure B is not provided in the counter substrate 102.
It should be understood that the foregoing is merely illustrative of the field sequential display panel in the display device provided by the embodiment of the present invention, and the structure of the field sequential display panel in the embodiment of the present invention is not specifically limited on the premise that the core point of the embodiment of the present invention can be reached.
Referring to fig. 2, 3 and 4 in combination, the display device 100 further includes a backlight module 20, where the backlight module 20 includes a plurality of backlight areas 210 corresponding to the plurality of sub-display areas 110 one by one; each of the backlight regions 210 includes a plurality of light sources D of different colors, and the light sources D of the backlight regions 210 correspondingly backlight the pixel units P of the sub-display regions 110.
For example, the light sources D of different colors in each backlight area 210 may be the first light source D1, the second light source D2 and the third light source D3, and at this time, when the light sources D of different colors in each backlight area 210 emit light, different colors of backlight can be provided for the pixel units P of the corresponding sub-display area 110, so that the display surface of the field sequential display panel 10 can display a color picture without providing a color filter structure in the field sequential display panel 10, which is beneficial to improving the light emitting efficiency of the backlight passing through the field sequential display panel 10.
It can be understood that the plurality of backlight areas 210 of the backlight module 20 are in one-to-one correspondence with the plurality of sub-display areas 110 of the field sequential display panel 10, i.e. the number of the backlight areas 210 in the backlight module 20 is equivalent to the data of the sub-display areas 110 of the field sequential display panel 10, and the backlight module 20 is a direct-down type backlight module; in this way, in the direction perpendicular to the thickness direction of the display device 100, the opposite sub-display area 110 and the backlight area 210 overlap, and at this time, the light emitted from the backlight area 210 can reach the sub-display area 110 corresponding thereto, so that the pixel units P in the sub-display area 110 can exhibit the corresponding color brightness.
In addition, the light sources D and the pixel units P in the backlight module 20 may have a one-to-one correspondence, or the number of the light sources D may be greater than the number of the pixel units P, or in other alternative embodiments, the number of the light sources D may be less than the number of the pixel units P, and the correspondence between the light sources D and the pixel units P is not limited on the premise that the light sources in the backlight area 210 can provide backlight for the pixel units P in the sub-display area 110 correspondingly.
In an alternative embodiment, the light sources in the backlight module 20 may include micro LEDs or mini LEDs, and at this time, the size of each light source D of the backlight module 20 is smaller, so that more light sources D can be disposed in the backlight module 20, so that the backlight provided by the backlight module 20 has higher brightness, which is further beneficial to improving the display effect of the display device.
With continued reference to fig. 2, 3 and 4, the display device 100 further includes a driving controller 30, where the driving controller 30 may be respectively connected to the bonding terminals of the field sequential display panel 10 and the backlight module 20, so as to respectively provide corresponding control signals for the field sequential display panel 10 and the backlight module 20, so as to control the electrode E of each pixel unit P in the field sequential display panel 10 to drive the liquid crystal C thereof to twist, and control the light source D in the backlight module 20 to emit light.
In an alternative embodiment, the driving controller 30 may include a backlight driving chip disposed in the backlight module 20 and a display driving chip disposed in the field sequential display panel, or the functions of the backlight driving chip and the display driving chip may be integrated in the same driving chip, where the specific structure of the driving controller 30 is not limited on the premise that the core point of the embodiment of the present invention can be implemented.
The driving controller 30 is configured to time-division control the light sources D of different colors in the same backlight area 210 to emit light and sequentially control the light sources D of the same color in different backlight areas 210 to emit light within a frame of image time; wherein the light emitting times of the light sources D respectively located in the adjacent N backlight areas 210 and having different colors do not overlap; n is an integer greater than 2; the driving controller 30 is further configured to control the electrode E in the pixel unit P to drive the liquid crystal C to twist during a frame period, so that the pixel unit P reaches the target color brightness.
It will be understood that the frame time of the display device 100 is the time of one refresh period when the refresh frequency of the display device 100 is fixed, and the time between when the electric signal is supplied to the electrode E of each pixel unit P in the field sequential display panel 10 row by row and when the electric signal is supplied to the electrode E of the pixel unit P in the first row and the electric signal is supplied to the electrode E of the pixel unit P in the first row next time.
Specifically, during a frame of image time, the driving controller 30 may respectively provide corresponding electrical signals to the electrodes E of each pixel unit P, so that an electric field is generated on the electrodes E to drive the liquid crystal C to twist, so that light with corresponding brightness can penetrate the liquid crystal layer 103 of the field sequential display panel 10, and each pixel unit P can display corresponding brightness; meanwhile, in a frame of image time, the driving controller 30 may sequentially provide control signals for the light sources D with different colors in the same backlight area 210 to control the light elements D with different colors in the backlight area 210 to emit light in a time-sharing manner, and simultaneously, in the arrangement direction of each backlight area 210, the driving controller 30 further controls the light sources D with the same color in each backlight area 210 to sequentially emit light, so that the light emitted by the light sources D with different colors can be mutually combined after passing through the pixel unit P, so that the pixel unit P presents corresponding colors, thereby realizing control over the color and brightness (i.e., color brightness) of the pixel unit P.
Fig. 5 is a driving timing chart of a backlight module according to an embodiment of the invention, and referring to fig. 2 to 5, the light sources D with different colors in each backlight area 210 of the backlight module 20 are respectively a first light source D1 with a first color, a second light source D2 with a second color, and a third light source D3 with a third color, where the first color, the second color, and the third color may be red, green, and blue. When the backlight module comprises n backlight areas sequentially arranged along the second direction Y, the first light source D1 in the first backlight area 211, the first light source D1 in the second backlight area 212, the first light source D1 in the third backlight area 213, …, the first light source D1 in the nth backlight area 21n emit light at the stages T11, T12, T13, …, T1n, and the initial moments of the stages T11, T12, T13, …, T1n are sequentially shifted by less than the lengths of the respective time periods in the stages T11, T12, T13, …, T1 n; similarly, the second light source D2 in the first backlight region 211, the second light source D2 in the second backlight region 212, the second light source D2, … in the third backlight region 213, and the second light source D2 in the nth backlight region 21n emit light in the T21, T22, T23, …, and T2n phases, respectively, and the starting moments of the T21, T22, T23, …, and T2n phases are sequentially shifted by less than the lengths of the respective time periods in the T21, T22, T23, …, and T2n phases; the third light source D3 in the first backlight region 211, the third light source D3 in the second backlight region 212, the third light source D3, … in the third backlight region 213, the third light source D3 of the nth backlight region 21n emit light in the T31, T32, T33, …, T3n phases respectively, and the starting moments of the T31, T32, T33, …, T3n phases are sequentially shifted by less than the lengths of the respective time periods in the T31, T32, T33, …, T3n phases; in this way, sequential control of the light sources D of the same color in each backlight region 210 can be achieved.
It should be understood that the above description is only exemplary for the light emitting sequence of the light sources D of different colors in the same backlight 210, that is, the driving controller 30 controls the first light source D1, the second light source D2 and the third light source D3 in each backlight 210 to emit light sequentially, and in other embodiments of the present invention, the light emitting sequence of the light sources D of different colors in each backlight 210 may also be: the light emitting sequence of the light sources D of different colors in each backlight area 210 is not limited on the premise that the core invention point of the embodiment of the invention can be realized, the first light source D1, the third light source D3, the second light source D2, the first light source D1, the second light source D2, the third light source D3, or the first light source D1.
For convenience of description, on the premise that no special description is provided, the technical solution of the embodiment of the present invention is exemplified by that the first light source D1, the second light source D2 and the third light source D3 in each backlight area 210 sequentially emit light in a frame of picture.
With continued reference to fig. 2-5, for the same backlight area 210, taking the first backlight area 211 as an example, the first light source D1, the second light source D2 and the third light source D3 emit light in the phases T11, T21 and T31 respectively, and the times of the phases T11, T21 and T31 do not overlap each other, so as to realize time-sharing light emission of the light sources D with different colors in the same backlight area 210, and prevent light crosstalk caused by simultaneous light emission of the light sources with different colors in the same backlight area 210; in addition, since the light emitted from the light sources D has a certain light emitting angle, the radiation areas of the light emitted from the adjacent light sources D overlap, so that the radiation areas of the light emitted from the light sources D overlap in the adjacent backlight areas 210, when the light sources D of different colors in the adjacent backlight areas 210 emit light simultaneously, and the radiation areas of the light emitted from the light sources D of different colors overlap, color mixing occurs in the overlapping radiation areas, and halation occurs, so that when the light in the overlapping area passes through the pixel units P of the field sequential display panel 10, the color brightness of the pixel units P is affected; in this way, by making the light emission times of the light sources D of different colors in the N adjacent backlight areas 210 not overlap each other, it is possible to prevent the light emission times of the light sources D of different colors in the adjacent backlight areas 210 from overlapping, and in the overlapping time, the phenomenon that the radiation areas of the light sources D of different colors overlap to generate halation to affect the display effect of the display device.
For example, taking N equal to 3 as an example, when the light emitting times of the light sources D of different colors in the first backlight 211, the second backlight 212 and the third backlight 213 do not overlap each other, that is, the light emitting period T21 of the second light source D2 in the first backlight 211 is entered after the ending time of the light emitting period T13 of the first light source D1 in the third backlight 213, and the light emitting period T31 of the third light source D3 in the first backlight 211 is entered after the ending time of the light emitting period T23 of the second light source D2 in the third backlight 213; in this way, the light emitting times of the light sources D of different colors in the adjacent backlight areas 210 can be not overlapped with each other.
It will be appreciated that the above is given by way of example only with N being equal to 3, and that N may be any integer greater than 2 in embodiments of the present invention, i.e. N may be equal to 3, 4, …, N. For example, as shown in fig. 6, when N is equal to the number N of backlight areas 210, the light-emitting period T21 of the second light source D2 in the first backlight area 211 is entered after the end time of the light-emitting period T1N of the first light source D1 in the nth backlight area 21N, and the light-emitting period T31 of the third light source D3 in the first backlight area 211 is entered after the end time of the light-emitting period T2N of the second light source D2 in the nth backlight area 21N. On the premise that halation can be prevented from occurring when the light source D emits light, the value of N is not particularly limited in the embodiment of the present invention. For convenience of description, the technical solution of the embodiment of the present invention is exemplified by N equal to the number N of the backlight areas 210 in the embodiment of the present invention without special limitation.
According to the embodiment of the invention, the light sources with different colors in the same backlight area are controlled to emit light in a time-sharing manner, so that the light emitting time of the light sources with different colors in the same backlight area is not overlapped, and the crosstalk of the light emitted by the light sources with different colors in the same backlight area can be prevented, so that the display luminous color of the display panel is influenced; meanwhile, the light emitting time of the light sources with different colors and respectively positioned in the adjacent N backlight areas is not overlapped, so that the light sources with different colors in the adjacent N backlight areas can be prevented from emitting light simultaneously, halation is generated at the junction between the backlight areas and the backlight areas to influence the display uniformity of the display device, and therefore, after the electrode driving liquid crystal in the pixel unit is twisted, the light with different colors emitted by the light sources in the backlight module can penetrate the corresponding pixel unit, and when the pixel unit reaches the target color brightness, the field sequential display panel accurately presents corresponding color display pictures, and the display effect of the display device can be improved.
Optionally, fig. 7 is a driving timing diagram of a display device according to an embodiment of the present invention, and referring to fig. 2-4 and 7, a frame of frame time may include a first sub-frame 1fram, a second sub-frame 2fram and a third sub-frame 3fram; at this time, the drive controller 30 specifically functions to: in the first sub-frame 1 frame, electrodes E in each row of pixel units P are sequentially controlled to drive the liquid crystal C to twist; in the second sub-frame 2 frame after the first sub-frame 1 frame, the electrodes E in the pixel units P of each row are controlled to drive the liquid crystal C to twist; in the third sub-frame 3 frame subsequent to the second sub-frame 2 frame, the electrodes E in the pixel cells P of each row are sequentially controlled to drive the liquid crystal C to twist.
Illustratively, on the basis that the pixel unit P includes the electrode E and the liquid crystal C, the pixel unit P may be further provided with a corresponding thin film transistor (not shown in the drawings), and a drain electrode of the thin film transistor may be electrically connected to the electrode E; typically, the gates of the thin film transistors of the pixel units P located in the same row are electrically connected to the same scanning line (not shown), and the sources of the thin film transistors of the pixel units P located in the same column are electrically connected to the same data line (not shown). The thin film transistors in each row of pixel units P can be controlled to be conducted sequentially by sequentially providing the scanning signals for each scanning line with the enabling level, so that the electric signals transmitted by the data lines can be written into the electrodes E of each pixel unit P in a one-to-one correspondence mode, the electrodes E in the pixel units P generate electric fields with corresponding intensities according to the received electric signals, and the liquid crystals are driven to twist to corresponding angles, so that light with corresponding brightness can be displayed when backlight passes through the field sequential display panel. When the frame time includes the first sub-frame, the second sub-frame and the third sub-frame, the electrode of each pixel unit can receive the same or different electric signals in the first sub-frame, the second sub-frame and the third sub-frame, so that each pixel unit presents the same or different brightness in the first sub-frame, the second sub-frame and the third sub-frame, and three frames with the same brightness can be presented, and the three frames can be combined to present corresponding display frames.
Alternatively, as described with continued reference to fig. 2-4, 7, when the light source D includes the first, second and third light sources D1, D2 and D3 of different colors, the driving controller 30 is further configured to: in the first sub-frame 1 frame, after the electrodes E of the pixel units P in the sub-display area 110 drive the liquid crystal C to twist, the first light source D1 of the backlight area 210 corresponding to the sub-display area 110 emits light; in the second sub-frame 2 frame, after the electrode E of each pixel unit P in the sub-display area 110 drives the liquid crystal C to twist, the second light source D2 of the backlight area 210 corresponding to the sub-display area 110 emits light; in the third sub-frame 3 frame, after the electrode E of each pixel unit P in the sub-display section 110 drives the liquid crystal C to twist, the third light source D3 of the backlight section 210 corresponding to the sub-display section 110 emits light.
In the first sub-frame 1 beam, the electrodes E in the pixel units P drive the liquid crystal C to twist by sequentially providing the electric signals to the pixel units P, so that the backlight of the first color provided by the first light source D1 of each backlight area 210 in the backlight module 20 can reach the display surface of the field sequential display panel 10 through each pixel unit P, and a sub-picture of the first color with corresponding brightness is displayed. Wherein, in the first driving period T11 of the first sub-frame 1 beam, the pixel unit P electrodes E of each row in the first sub-display area 111 can complete the driving of the torsion of the liquid crystal C of each row, after the end time of the driving period T11, the first light source D1 in the first backlight area 211 corresponding to the first sub-display area 111 can be controlled to start to emit light, that is, after the end time of the driving period T11, the light emitting stage T11 of the first light source D1 in the first backlight area 211 is entered, so that the backlight of the first color provided by the first light source D1 can be provided to each pixel unit of the first sub-display area 111 when the first light source D1 of the first backlight area 211 emits light, so that each pixel unit P of the first sub-display area 111 can display simultaneously; likewise, in the second driving period t12 of the first sub-frame 1 beam, the pixel unit P electrodes E of each row in the second sub-display area 112 can complete the driving of the respective liquid crystal C, after the end time of the driving period t12, the first light source D1 in the second backlight area 212 corresponding to the second sub-display area 112 can be controlled to start to emit light, so that when the first light source D1 in the second backlight area 212 emits light, the backlight of the first color provided by the first light source D1 can be provided to each pixel unit in the second sub-display area 112, so that each pixel unit P in the second sub-display area 112 can display simultaneously; the correspondence between the other driving periods (T13, …, T1 n) in the first subframe 1 frame and the light emitting periods (T13, …, T1 n) of the first light source D1 is similar to the above, and the same points are referred to the above description and are not repeated here.
Correspondingly, in the second sub-frame 2 beam, by sequentially providing the electrical signals to the pixel units P in each row, the electrode E in each pixel unit P drives the liquid crystal C thereof to twist, so that the backlight of the second color provided by the second light source D2 of each backlight area 210 in the backlight module 20 can reach the display surface of the field sequential display panel 10 through each pixel unit P, and a sub-picture of the second color with corresponding brightness is displayed. Wherein, in the first driving period t21 of the second sub-frame 2 beam, the pixel unit P electrodes E of each row in the first sub-display area 111 can complete the driving of the respective liquid crystal C, after the end time of the driving period t21, the second light source D2 in the first backlight area 211 corresponding to the first sub-display area 111 can be controlled to start to emit light, so that when the second light source D2 in the first backlight area 211 emits light, the backlight of the second color provided by the second light source D2 can be provided to each pixel unit in the first sub-display area 111, so that each pixel unit P in the first sub-display area 111 can display at the same time; likewise, in the second driving period t22 of the second sub-frame 2 beam, the pixel unit P electrodes E of each row in the second sub-display area 112 can complete the driving of the respective liquid crystal C, after the end time of the driving period t22, the second light source D2 in the second backlight area 212 corresponding to the second sub-display area 112 can be controlled to start to emit light, so that when the second light source D2 in the second backlight area 212 emits light, the backlight of the second color provided by the second light source D2 can be provided to each pixel unit in the second sub-display area 112, so that each pixel unit P in the second sub-display area 112 can display simultaneously; the correspondence between the other driving periods (T23, …, T2 n) in the second subframe 2 frame and the light emitting periods (T23, …, T2 n) of the second light source D2 is similar to the above, and the same points are referred to the above description and are not repeated here.
In the third sub-frame 3 frame, by sequentially providing the electrical signals to the pixel units P in each row, the electrode E in each pixel unit P drives the liquid crystal C thereof to twist, so that the backlight of the third color provided by the third light source D3 of each backlight area 210 in the backlight module 20 can reach the display surface of the field sequential display panel 10 through each pixel unit P, and a sub-picture of the third color with corresponding brightness is displayed. Wherein, in the first driving period t31 of the third sub-frame 3 beam, the pixel unit P electrodes E of each row in the first sub-display area 111 can complete the driving of the respective liquid crystal C, after the end time of the driving period t31, the third light source D3 in the first backlight area 211 corresponding to the first sub-display area 111 can be controlled to start to emit light, so that when the third light source D3 of the first backlight area 211 emits light, the backlight of the third color provided by the third light source D3 can be provided to each pixel unit of the first sub-display area 111, so that each pixel unit P of the first sub-display area 111 can display at the same time; likewise, in the second driving period t32 of the third sub-frame 3 beam, the pixel unit P electrodes E of each row in the second sub-display area 112 can complete the driving of the respective liquid crystal C, after the end time of the driving period t32, the third light source D3 in the second backlight area 212 corresponding to the second sub-display area 112 can be controlled to start to emit light, so that when the third light source D3 in the second backlight area 212 emits light, the backlight of the third color provided by the third light source D3 can be provided to each pixel unit in the second sub-display area 112, so that each pixel unit P in the second sub-display area 112 can perform display simultaneously; the correspondence between the other driving periods (T33, …, T3 n) in the third sub-frame 3 frame and the light emitting periods (T33, …, T3 n) of the third light source D3 is similar to the above, and the same reference is made to the above description, and the detailed description is omitted.
Thus, the human eyes respectively receive the sub-picture of the first color, the sub-picture of the second color and the sub-picture of the third color in the time of one frame picture, and the sub-pictures of the three colors are mutually combined, namely, the human eyes can watch one frame of the colored picture, thereby realizing the color display of the display device.
Alternatively, fig. 8 is a driving timing chart of another display device according to an embodiment of the present invention, and when the light source D includes the first light source D1, the second light source D2, and the third light source D3 with different colors, as shown in combination with reference to fig. 4 and 8, the light emitting efficiency of the first light source D1 may be smaller than the light emitting efficiency of the second light source D2 and the third light source D3; at this time, the driving controller 30 is configured to control the light emitting time of the first light source D1 of each backlight 210 to be T10, the light emitting time of the second light source D2 of each backlight 210 to be T20, and the light emitting time of the third light source D3 of each backlight 210 to be T3 within one frame of frame time; wherein T10 is greater than T20 and/or T10 is greater than T30.
Specifically, since the light emitting efficiency of the first light source D1 is smaller than the light emitting efficiencies of the second light source D2 and the third light source D3, when the first light source D1 and the second light source D2 and the third light source D3 receive the corresponding light emitting control signals, the light emitting brightness of the first light source D1 in unit time is smaller than the light emitting brightness of the second light source D2 and the third light source D3, and the final display light emitting brightness of the display device is the integral of the human eyes to the received light brightness over time; at this time, in a frame of image time, the light emitting time T10 of the first light source D1 in the same backlight area 210 may be longer than the light emitting time T20 of the second light source D2 and/or the light emitting time of the third light source D3, so as to balance the color brightness deviation caused by the low light emitting efficiency of the first light source D1, thereby improving the display uniformity of the display device and further improving the display effect of the display device.
It is understood that when the light source D is a mini LED or a micro LED, the light emitting color of the first light source D1 may be red, the light emitting color of the second light source D2 may be one of green and blue, the light emitting color of the third light source D3 may be the other of green and blue, and the light emitting colors of the first light source D1, the second light source D2 and the third light source D3 may be set as required, which is not particularly limited in the embodiment of the present invention.
It should be noted that, fig. 8 only illustrates a case where the light emitting time T10 of the first light source D1 is simultaneously greater than the light emitting time T20 of the second light source D2 and the light emitting time T of the third light source D3, and in an embodiment of the present invention, the light emitting time T10 of the first light source D1 may be only greater than the light emitting time T20 of the second light source D2 and less than or equal to the light emitting time T30 of the third light source D3; alternatively, the light emitting time T10 of the first light source D1 may be only greater than the light emitting time T30 of the third light source D3 and less than or equal to the light emitting time T20 of the second light source D2, which is not particularly limited on the premise of being able to balance the difference brought by the light emitting efficiencies of the light sources D of different colors.
Optionally, on the basis of the foregoing embodiment, the light emitting efficiency of the second light source D2 may be smaller than the light emitting efficiency of the third light source D3, where T20 is greater than T30, so that the color brightness deviation occurring due to the different light emitting efficiencies of the first light source D1, the second light source D2 and the third light source D3 can be balanced, so that the display uniformity of the display device can be further improved, and the display effect of the display device can be further effectively improved.
Optionally, fig. 9 is a driving timing chart of another backlight module according to an embodiment of the present invention, referring to fig. 4 and fig. 9 in combination, when the light source D includes a first light source D1, a second light source D2 and a third light source D3 with different colors, the driving controller 30 is configured to control the first light source D1, the second light source D2 and the third light source D3 in each backlight area 210 to emit light sequentially in a frame of image time; in the same 210 backlight area, the interval time between the light emitting time T30 of the third light source D3 of the previous frame and the light emitting time T10 of the first light source D1 of the next frame is T01; in the same frame of image, the interval between the light emitting time T10 of the first light source D1 and the light emitting time T20 of the second light source D2 in the same backlight area 210 is T02, and the interval between the light emitting time T20 of the second light source D2 and the light emitting time T30 of the third light source D3 in the same backlight area 210 is T03; t01 is greater than T02, and T01 is greater than T03.
Specifically, in one frame of image, the first light source D1, the second light source D2 and the third light source D3 of the same backlight area 210 emit light sequentially, and a time interval T02 is provided between the light emitting time T10 of the first light source D1 and the light emitting time T20 of the second light source D2, such that the light emitting time T02 can be completed with the first light source D1 in the backlight area 210 adjacent to the other backlight areas 210, and a time interval T03 is provided between the light emitting time T20 of the second light source D2 and the light emitting time T30 of the third light source D3, such that the light emitting time T03 can be completed with the second light source D2 in the backlight area 210 adjacent to the other backlight areas 210, so as to prevent the light sources D of different colors in each adjacent backlight area 210 from emitting light simultaneously to generate halation in one frame of image, thereby being beneficial to improving the display effect of the display device.
After the light emission time T30 of the third light source D3 in the backlight area 210 expires, the third light source D3 stops emitting light, and each light source D in the backlight area 210 in the current frame finishes emitting light; when the next frame arrives, the light emitting time T10 of the first light source D1 in the backlight area 210 will be re-entered, that is, there is a time interval T01 between the light emitting time T30 of the third light source D3 of the previous frame and the light emitting time T10 of the first light source D1 of the next frame, so that the third light source D3 of each adjacent backlight area 210 finishes light emission, and thus the overlapping of the light emitting time between the light emitting element of the third light source D3 in the current frame and the first light source D1 in the next frame of each adjacent backlight area 210 can be prevented, and the display effect of the display device is affected. In addition, by making T01 greater than T02 and T01 greater than T03, enough time can be reserved between the current frame picture and the next frame picture, so that the light emitting time of the light sources D with different colors in the adjacent backlight areas 210 in the pictures with different frames is ensured not to overlap, and the display device is ensured to have a higher display effect.
Optionally, fig. 10 is a driving timing chart of another display device according to an embodiment of the present invention, and referring to fig. 4 and 10 in combination, a frame of black display time is included between any two adjacent frames of display, and at this time, the driving controller 30 is further configured to sequentially control the light sources D of the backlight areas 210 to stop emitting light during the black display time.
In this way, by inserting a frame of black picture underdisplay between two adjacent frames of picture display, enough time is reserved between two adjacent frames of picture display, so that the light-emitting time of each light source D in the previous frame of picture can not overlap with the light-emitting time of each light source D in the next frame of picture, the overlapping of the light emitting time of the different backlight areas 210 in the two adjacent frames is prevented, so that the display content of the previous frame affects the display content of the display frame of the next frame, thereby further improving the display effect of the display device.
Optionally, on the basis of the above embodiments, referring to fig. 3, 4 and 10 in combination, the driving controller 30 is further configured to control the electrodes of the pixel units P in each sub-display area 110 to stop driving the liquid crystal to twist during the black frame undersplay display time.
Specifically, since the light source of each backlight area 210 is in a non-light-emitting state during the display time of the black frame, the displayed frame is still a black frame even if the electrodes in each pixel unit P drive the liquid crystal thereof to twist; in this way, during the display time of the black frame, the driving controller 30 controls the electrodes of each pixel unit P in each sub-display area 110 to stop driving the liquid crystal to twist, so that the light cannot pass through the field sequential display panel, and the display device will display the black frame; at this time, it is unnecessary to supply an electric signal to the electrode of each pixel unit P in each sub-display area 110, so that each pixel unit P does not generate power consumption, thereby contributing to low power consumption of the display device.
Based on the same inventive concept, the embodiment of the present invention further provides a driving method of a display device, where the driving method of the display device is used for driving the display device provided by the embodiment of the present invention, and fig. 11 is a schematic flow chart of the driving method of the display device provided by the embodiment of the present invention, and as shown in fig. 11, the driving method of the display device includes:
s10, in one frame of picture time, controlling the light sources with different colors in the same backlight area to emit light in a time-sharing mode, and sequentially controlling the light sources with the same color in different backlight areas to emit light.
Wherein, the light emitting time of the light sources which are respectively positioned in the adjacent N backlight areas and have different colors is not overlapped; n is an integer greater than 2.
For example, taking an example that the light source of each backlight area includes a first light source, a second light source and a third light source with different colors, in a frame of image time, the first light source, the second light source and the third light source are controlled to emit light in different time periods in a specific sequence, the light-emitting time of the first light source of the different backlight areas can be shifted in sequence, the light-emitting time of the second light source of the different backlight areas can be shifted in sequence, and the light-emitting time of the third light source of the different backlight areas can be shifted in sequence; meanwhile, the light emitting time of the light sources with different colors in the N adjacent backlight areas is not overlapped, so that the light sources with different colors in the adjacent backlight areas are prevented from emitting light simultaneously, and halation is generated.
And S20, controlling electrodes in the pixel units to drive the liquid crystal to twist in a frame of picture time so as to enable the pixel units to achieve target color brightness.
Specifically, light emitted by each light source in the backlight module is used as backlight of the field sequential display panel to be provided to pixel units of different sub-display areas, so that after the electrode in the pixel unit drives the liquid crystal to twist, the backlight provided by the light source can penetrate through the pixel unit, so that the pixel unit can display corresponding colors and brightness (namely color brightness), and further the display device displays colors with rich colors.
According to the embodiment of the invention, the light sources with different colors in the same backlight area are controlled to emit light in a time-sharing manner, so that the light emitting time of the light sources with different colors in the same backlight area is not overlapped, and the crosstalk of the light emitted by the light sources with different colors in the same backlight area can be prevented, so that the display luminous color of the display panel is influenced; meanwhile, the light emitting time of the light sources with different colors and respectively positioned in the adjacent N backlight areas is not overlapped, so that the light sources with different colors in the adjacent N backlight areas can be prevented from emitting light simultaneously, halation is generated at the junction between the backlight areas and the backlight areas to influence the display uniformity of the display device, and therefore, after the electrode driving liquid crystal in the pixel unit is twisted, the light with different colors emitted by the light sources in the backlight module can penetrate the corresponding pixel unit, and when the pixel unit reaches the target color brightness, the field sequential display panel accurately presents corresponding color display pictures, and the display effect of the display device can be improved.
It should be noted that, the driving method of the display device provided by the embodiment of the present invention can drive the display device provided by any embodiment of the present invention, so that the driving method of the display device provided by the embodiment of the present invention has the technical features of the display device provided by the embodiment of the present invention, and can achieve the beneficial effects of the display device provided by any embodiment of the present invention.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. A display device, comprising: a field sequential display panel, a backlight module and a drive controller;
the field sequential display panel comprises a plurality of sub-display areas; each sub-display area comprises a plurality of pixel units which are arranged in an array manner, wherein each pixel unit comprises liquid crystal and electrodes for controlling the torsion of the liquid crystal;
the backlight module comprises a plurality of backlight areas which are in one-to-one correspondence with the plurality of sub-display areas; each of the backlight areas includes a plurality of light sources of different colors; the light source of the backlight area correspondingly provides backlight for the pixel units of the sub-display area;
the drive controller is used for:
in a frame of picture time, controlling the light sources with different colors in the same backlight area to emit light in a time-sharing way, and controlling the light sources with the same color in different backlight areas to emit light in sequence; wherein the light emitting time of the light sources which are respectively positioned in the adjacent N backlight areas and have different colors is not overlapped; n is an integer greater than 2;
and controlling electrodes in the pixel units to drive the liquid crystal to twist in one frame of picture time so as to enable the pixel units to reach target color brightness.
2. The display device according to claim 1, wherein the one-frame picture time includes a first subframe, a second subframe, and a third subframe;
The drive controller is specifically configured to:
in the first subframe, the electrodes in the pixel units of each row are sequentially controlled to drive the liquid crystal to twist;
in the second subframe after the first subframe, sequentially controlling the electrodes in the pixel units of each row to drive the liquid crystal to twist;
and in the third subframe after the second subframe, sequentially controlling the electrodes in the pixel units of each row to drive the liquid crystal to twist.
3. The display device according to claim 2, wherein the light source includes a first light source, a second light source, and a third light source of different colors;
the drive controller is further configured to:
in the first sub-frame, after the electrode of each pixel unit in the sub-display area drives the liquid crystal to twist, the first light source of the backlight area corresponding to the sub-display area emits light;
in the second sub-frame, after the electrode of each pixel unit in the sub-display area drives the liquid crystal to twist, the second light source of the backlight area corresponding to the sub-display area emits light;
in the third sub-frame, after the electrodes of the pixel units in the sub-display area drive the liquid crystal to twist, the third light source of the backlight area corresponding to the sub-display area emits light.
4. The display device according to claim 1, wherein the light source includes a first light source, a second light source, and a third light source of different colors;
the luminous efficiency of the first light source is smaller than the luminous efficiency of the second light source and the third light source;
the driving controller is configured to control, in a frame of image time, a light emitting time of the first light source of each backlight area to be T10, a light emitting time of the second light source of each backlight area to be T20, and a light emitting time of the third light source of each backlight area to be T30; wherein T10 is greater than T20 and/or T10 is greater than T30.
5. The display device according to claim 4, wherein a light-emitting efficiency of the second light source is smaller than a light-emitting efficiency of the third light source; wherein T20 is greater than T30.
6. The display device of claim 4, wherein the drive controller is specifically configured to control the first light source, the second light source, and the third light source in each of the backlight regions to sequentially emit light.
7. The display device according to claim 1, wherein the light source includes a first light source, a second light source, and a third light source which are different in color;
The driving controller is used for controlling the first light source, the second light source and the third light source in each backlight area to emit light in sequence in one frame of picture time;
in the same backlight area, the interval time between the light emitting time of the third light source of the previous frame of picture and the light emitting time of the first light source of the next frame of picture is T01; in the same frame of picture, the interval between the light emitting time of the first light source and the light emitting time of the second light source in the same backlight area is T02, and the interval between the light emitting time of the second light source and the light emitting time of the third light source in the same backlight area is T03; t01 is greater than T02, and T01 is greater than T03.
8. The display device according to claim 1, wherein a black frame display time is included between any two adjacent frames;
the driving controller is further configured to sequentially control the light sources of the backlight areas to stop emitting light during the black frame display time.
9. The display device according to claim 8, wherein the drive controller is further configured to control the electrode of each of the pixel units in each of the sub-display areas to stop driving the liquid crystal to twist during the black display time.
10. A driving method of a display device for driving the display device according to any one of claims 1 to 9, comprising:
in a frame of picture time, controlling the light sources with different colors in the same backlight area to emit light in a time-sharing way, and controlling the light sources with the same color in different backlight areas to emit light in sequence; wherein the light emitting time of the light sources which are respectively positioned in the adjacent N backlight areas and have different colors is not overlapped; n is an integer greater than 2;
and controlling electrodes in the pixel units to drive the liquid crystal to twist in one frame of picture time so as to enable the pixel units to reach target color brightness.
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Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020057253A1 (en) * 2000-11-09 2002-05-16 Lim Moo-Jong Method of color image display for a field sequential liquid crystal display device
US6570554B1 (en) * 1999-11-08 2003-05-27 Fujitsu Limited Liquid crystal display
TW201426145A (en) * 2012-11-15 2014-07-01 Semiconductor Energy Lab Liquid crystal display device
CN104019404A (en) * 2014-05-23 2014-09-03 深圳市华星光电技术有限公司 Backlight module, display device and drive method of display device
CN104821161A (en) * 2015-05-29 2015-08-05 京东方科技集团股份有限公司 Field sequential display panel, field sequential display device and driving method thereof
CN104820315A (en) * 2015-05-29 2015-08-05 京东方科技集团股份有限公司 Field sequential display panel, field sequential display device and driving method
CN106444137A (en) * 2016-10-20 2017-02-22 京东方科技集团股份有限公司 Display panel, liquid crystal display and drive method of liquid crystal display
CN108572482A (en) * 2018-04-20 2018-09-25 京东方科技集团股份有限公司 A kind of backlight module, display device and its driving method
CN108766365A (en) * 2018-05-24 2018-11-06 上海中航光电子有限公司 Display panel and its driving method and display device
CN109741712A (en) * 2019-03-27 2019-05-10 京东方科技集团股份有限公司 Backlight driving method and device, display device
CN110231735A (en) * 2019-05-16 2019-09-13 武汉华星光电技术有限公司 Display device
US20210012724A1 (en) * 2018-01-02 2021-01-14 Beijing Boe Optoelectronics Technology Co., Ltd. Pixel unit and drive method thereof and display apparatus
CN112562601A (en) * 2020-12-21 2021-03-26 上海树泉信息技术有限公司 Optimal backlight time calculation method and application
CN113920948A (en) * 2021-09-28 2022-01-11 屏丽科技成都有限责任公司 Adjusting method and computer readable medium for backlight in field sequential display device
CN115064130A (en) * 2022-07-22 2022-09-16 京东方科技集团股份有限公司 Display device driving method, display module and display device
CN115586672A (en) * 2022-11-10 2023-01-10 厦门天马微电子有限公司 Light-emitting substrate, display panel, backlight module, display device and driving method
CN115731887A (en) * 2021-08-26 2023-03-03 京东方科技集团股份有限公司 Field sequential display device and display method

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6570554B1 (en) * 1999-11-08 2003-05-27 Fujitsu Limited Liquid crystal display
US20020057253A1 (en) * 2000-11-09 2002-05-16 Lim Moo-Jong Method of color image display for a field sequential liquid crystal display device
TW201426145A (en) * 2012-11-15 2014-07-01 Semiconductor Energy Lab Liquid crystal display device
CN104019404A (en) * 2014-05-23 2014-09-03 深圳市华星光电技术有限公司 Backlight module, display device and drive method of display device
CN104821161A (en) * 2015-05-29 2015-08-05 京东方科技集团股份有限公司 Field sequential display panel, field sequential display device and driving method thereof
CN104820315A (en) * 2015-05-29 2015-08-05 京东方科技集团股份有限公司 Field sequential display panel, field sequential display device and driving method
CN106444137A (en) * 2016-10-20 2017-02-22 京东方科技集团股份有限公司 Display panel, liquid crystal display and drive method of liquid crystal display
US20210012724A1 (en) * 2018-01-02 2021-01-14 Beijing Boe Optoelectronics Technology Co., Ltd. Pixel unit and drive method thereof and display apparatus
CN108572482A (en) * 2018-04-20 2018-09-25 京东方科技集团股份有限公司 A kind of backlight module, display device and its driving method
CN108766365A (en) * 2018-05-24 2018-11-06 上海中航光电子有限公司 Display panel and its driving method and display device
CN109741712A (en) * 2019-03-27 2019-05-10 京东方科技集团股份有限公司 Backlight driving method and device, display device
CN110231735A (en) * 2019-05-16 2019-09-13 武汉华星光电技术有限公司 Display device
CN112562601A (en) * 2020-12-21 2021-03-26 上海树泉信息技术有限公司 Optimal backlight time calculation method and application
CN115731887A (en) * 2021-08-26 2023-03-03 京东方科技集团股份有限公司 Field sequential display device and display method
CN113920948A (en) * 2021-09-28 2022-01-11 屏丽科技成都有限责任公司 Adjusting method and computer readable medium for backlight in field sequential display device
CN115064130A (en) * 2022-07-22 2022-09-16 京东方科技集团股份有限公司 Display device driving method, display module and display device
CN115586672A (en) * 2022-11-10 2023-01-10 厦门天马微电子有限公司 Light-emitting substrate, display panel, backlight module, display device and driving method

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