CN111048053B - Liquid crystal display device and driving method thereof - Google Patents
Liquid crystal display device and driving method thereof Download PDFInfo
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- CN111048053B CN111048053B CN202010003884.1A CN202010003884A CN111048053B CN 111048053 B CN111048053 B CN 111048053B CN 202010003884 A CN202010003884 A CN 202010003884A CN 111048053 B CN111048053 B CN 111048053B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002184 metal Substances 0.000 description 11
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The embodiment of the application provides a liquid crystal display device and a driving method thereof, the liquid crystal display device driving method is characterized in that first scanning information changes when the brightness of different areas of the liquid crystal display device is different, the liquid crystal display device obtains driving information of a driving circuit and the first scanning information and the second scanning information of a backlight module according to the first scanning information and the second scanning information, obtains information of a first area corresponding to a dark band according to the first scanning information and the second scanning information, obtains compensation data according to the information of the first area and preset conditions, and determines position information of the first area according to the first scanning information and the second scanning information, so that the first area is compensated according to the position information of the first area, the brightness of each area of the liquid crystal display device is consistent, and the problem that the charging time of different areas is different in the existing liquid crystal display device is solved, leading to the technical problem of bright and dark band phenomenon during display.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a liquid crystal display device and a driving method thereof.
Background
In order to achieve a high contrast ratio, an existing liquid crystal display may use an LED (light emitting diode) as a backlight, as shown in fig. 1, the existing local dimming backlight includes a plurality of LEDs, and when adjusting, the brightness of a lit portion may be increased, and the brightness of a dark portion may be decreased, so as to achieve a high contrast ratio; however, in the driving process of the backlight, because the backlight adopts a dynamic scanning driving method, as shown in fig. 2, in a timing chart of the backlight and the grid in the display panel, a scanning time of the backlight coincides with an on time of the grid, that is, an operating time of a transistor of the display panel, when a certain row of LEDs is turned on, a region irradiated to the LCD is increased due to blocking of metal due to photosensitive property of the metal, so that a charging time in the region is shortened, and thus, brightness of a region irradiated by the light of the metal is inconsistent with brightness of a region not irradiated by the light of the metal, and when a low gray level picture is displayed, the phenomenon is further aggravated, as shown in fig. 3, so that a bright and dark band phenomenon occurs.
Therefore, the conventional liquid crystal display device has the technical problem that the bright and dark bands appear during display due to different charging time of different areas.
Disclosure of Invention
The embodiment of the application provides a liquid crystal display device and a driving method thereof, which are used for solving the technical problem that bright and dark bands appear during display due to different charging times of different areas in the conventional liquid crystal display device.
The embodiment of the application provides a liquid crystal display device and a driving method thereof, wherein the driving method of the liquid crystal display device comprises the following steps:
acquiring first scanning information of a driving circuit of a liquid crystal display device;
acquiring second scanning information of a backlight module of the liquid crystal display device;
obtaining the area of a first area in the liquid crystal display device according to the first scanning information and the second scanning information, wherein the liquid crystal display device comprises the first area and a second area, and the brightness of the first area is smaller than that of the second area;
obtaining position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information;
obtaining compensation data according to the area of the first area and a preset condition;
and compensating the first area according to the compensation data according to the position information of the first area, and driving the liquid crystal display device.
In some embodiments, the step of acquiring first scan information of a driving circuit of the liquid crystal display device includes:
acquiring a first scanning frequency of the driving circuit;
acquiring a first scanning starting position of the driving circuit;
and taking the first scanning frequency and the first scanning starting position as first scanning information.
In some embodiments, the step of acquiring the second scanning information of the backlight module of the liquid crystal display device includes:
acquiring a second scanning frequency of the backlight module;
acquiring a second scanning initial position of the backlight module;
and taking the second scanning frequency and the second scanning starting position as second scanning information.
In some embodiments, the step of obtaining the area size of the first region in the liquid crystal display device according to the first scanning information and the second scanning information comprises:
obtaining the number of the first sub-areas according to the first scanning frequency and the second scanning frequency;
acquiring the area of the first sub-area;
and obtaining the area of the first area according to the number of the first sub-areas and the area of the first sub-areas.
In some embodiments, the obtaining of the position information of the first area in the liquid crystal display device according to the first scanning information and the second scanning information includes:
acquiring position information of the first sub-area according to the first scanning starting position and the second scanning starting position;
and obtaining the position information of the first area according to the position information of the first sub-area.
In some embodiments, the obtaining of the position information of the first area in the liquid crystal display device according to the first scanning information and the second scanning information includes:
acquiring position information of the second sub-area according to the first scanning starting position and the second scanning starting position;
obtaining the position information of the second area according to the position information of the second sub-area;
and determining the position information of the first area according to the position information of the second area.
In some embodiments, the step of obtaining compensation data according to the area of the first region and a preset condition includes:
acquiring the compensation time of a unit area, and taking the compensation time of the unit area as a preset condition;
determining the compensation time of the first region according to the compensation time of the unit area and the area of the first region;
and taking the compensation time as compensation data.
In some embodiments, the step of obtaining the compensation time per unit area comprises:
acquiring first brightness of a first area in the liquid crystal display device;
acquiring second brightness of a second area in the liquid crystal display device;
obtaining the compensation brightness of a unit area according to the first brightness, the second brightness and the area of the first area;
and obtaining the compensation time of the unit area according to the compensation brightness of the unit area.
In some embodiments, the compensating the first region according to the compensation data according to the position information of the first region and driving the liquid crystal display device includes:
driving the liquid crystal display device using the driving data;
and driving the first region for a compensation time using the driving data after the driving data drives the liquid crystal display device.
Meanwhile, an embodiment of the present application provides a liquid crystal display device, including:
the first acquisition module is used for acquiring first scanning information of a driving circuit of the liquid crystal display device;
the second acquisition module is used for acquiring second scanning information of the backlight module of the liquid crystal display device;
the area acquisition module is used for acquiring the area of a first area in the liquid crystal display device according to the first scanning information and the second scanning information, the liquid crystal display device comprises the first area and a second area, and the brightness of the first area is smaller than that of the second area;
the position acquisition module is used for acquiring position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information;
the compensation data acquisition module is used for acquiring compensation data according to the area of the first area and a preset condition;
and the driving module is used for compensating the first area according to the compensation data and the position information of the first area and driving the liquid crystal display device.
Has the advantages that: the embodiment of the application provides a liquid crystal display device and a driving method thereof, wherein the driving method of the liquid crystal display device comprises the following steps: acquiring first scanning information of a driving circuit of a liquid crystal display device, acquiring second scanning information of a backlight module of the liquid crystal display device, acquiring the area of a first region in the liquid crystal display device according to the first scanning information and the second scanning information, wherein the liquid crystal display device comprises the first region and a second region, the brightness of the first region is smaller than that of the second region, acquiring position information of the first region in the liquid crystal display device according to the first scanning information and the second scanning information, acquiring compensation data according to the area of the first region and preset conditions, compensating the first region according to the compensation data according to the position information of the first region, and driving the liquid crystal display device; the first scanning information can change when the brightness of different areas of the liquid crystal display device is different, the driving information of the driving circuit and the first scanning information and the second scanning information of the backlight module are obtained, the information of the first area corresponding to the dark band is obtained according to the first scanning information and the second scanning information, the compensation data is obtained according to the information of the first area and the preset conditions, meanwhile, the position information of the first area is determined according to the first scanning information and the second scanning information, the first area is compensated according to the position information of the first area, the brightness of each area of the liquid crystal display device is consistent, and the technical problem that the phenomenon of the bright dark band occurs when the display is carried out due to the fact that the charging time of different areas is different in the existing liquid crystal display device is solved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a schematic view of a backlight module of a conventional LCD device.
FIG. 2 is a schematic diagram of a conventional LCD device.
FIG. 3 is a timing diagram of a conventional LCD device.
Fig. 4 is a flowchart of a driving method of a liquid crystal display device according to an embodiment of the present application.
Fig. 5 is a schematic view of a liquid crystal display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application aims at the technical problem that the brightness of different areas is different, so that the phenomenon of bright and dark bands occurs during display in the existing liquid crystal display device, and the embodiment of the application is used for solving the technical problem.
As shown in fig. 1, a backlight module in a conventional liquid crystal display device includes a back plate 111 and an LED light source 112, and in a display process of the liquid crystal display device, brightness of LEDs in different areas can be adjusted to increase brightness of a lit portion of the liquid crystal display device, and brightness of an unlit portion can be adjusted to decrease or even extinguish, so that local dimming is achieved, and an effect of high contrast is achieved; however, in the driving process of the liquid crystal display panel, as shown in fig. 3, in the drawing, BL represents a driving timing diagram of the backlight module, and Gate1 represents a voltage timing diagram on the first Gate; corresponding gates 2, 249, 270 indicate voltage timing diagrams of the second Gate, the second hundred forty nine Gate, and the second hundred seventy Gate, and it can be seen from fig. 3 that there is a coincidence portion between the driving time of the backlight module and the on time of the Gate, that is, the Gate is turned on while the light is irradiated, the transistor operates, and when the light is irradiated onto the metal in the transistor, the vertical direction of the light sensitivity of the metal will cause the impedance of the metal to increase, so that the charging time of the area corresponding to the light irradiation becomes shorter, and the brightness is reduced in the area where the metal is irradiated with the light as compared with the area where the metal is not irradiated with the light, and further, when a low gray level image is displayed, the problem will be further aggravated, as shown in fig. 2, there are a bright band 122 and a dark band 121 in fig. 2, and a bright and dark band phenomenon appears during the display process; namely, the technical problem that the bright and dark bands appear during display due to different charging time of different areas exists in the conventional liquid crystal display device.
As shown in fig. 4, an embodiment of the present application provides a method for driving a liquid crystal display device, including:
s1, acquiring first scanning information of a driving circuit of the liquid crystal display device;
s2, acquiring second scanning information of the backlight module of the liquid crystal display device;
s3, obtaining the area of a first area in the liquid crystal display device according to the first scanning information and the second scanning information, wherein the liquid crystal display device comprises the first area and a second area, and the brightness of the first area is smaller than that of the second area;
s4, obtaining position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information;
s5, obtaining compensation data according to the area of the first area and preset conditions;
and S6, compensating the first region according to the compensation data according to the position information of the first region, and driving the liquid crystal display device.
The embodiment of the application provides a liquid crystal display device and a driving method thereof, wherein the driving method of the liquid crystal display device comprises the following steps: acquiring first scanning information of a driving circuit of a liquid crystal display device, acquiring second scanning information of a backlight module of the liquid crystal display device, acquiring the area of a first region in the liquid crystal display device according to the first scanning information and the second scanning information, wherein the liquid crystal display device comprises the first region and a second region, the brightness of the first region is smaller than that of the second region, acquiring position information of the first region in the liquid crystal display device according to the first scanning information and the second scanning information, acquiring compensation data according to the area of the first region and preset conditions, compensating the first region according to the compensation data according to the position information of the first region, and driving the liquid crystal display device; the first scanning information can change when the brightness of different areas of the liquid crystal display device is different, the driving information of the driving circuit and the first scanning information and the second scanning information of the backlight module are obtained, the information of the first area corresponding to the dark band is obtained according to the first scanning information and the second scanning information, the compensation data is obtained according to the information of the first area and the preset conditions, meanwhile, the position information of the first area is determined according to the first scanning information and the second scanning information, the first area is compensated according to the position information of the first area, the brightness of each area of the liquid crystal display device is consistent, and the technical problem that the phenomenon of the bright dark band occurs when the display is carried out due to the fact that the charging time of different areas is different in the existing liquid crystal display device is solved.
In one embodiment, the step of acquiring the first scan information of the driving circuit of the liquid crystal display device includes:
acquiring a first scanning frequency of the driving circuit;
acquiring a first scanning starting position of the driving circuit;
taking the first scanning frequency and the first scanning starting position as first scanning information; when the first scanning information of the driving circuit is acquired, the first scanning frequency of the driving circuit can be acquired according to the time sequence diagram of the voltage of the gate, and meanwhile, the first scanning starting position of the driving circuit is acquired according to the time sequence diagram of the voltage of the gate, wherein the problem that the voltage at a certain position cannot rise appears on the time sequence diagram of the gate voltage due to the fact that metal impedance in the driving circuit is increased after the metal in the driving circuit is irradiated by a light source of a backlight module; meanwhile, the first scanning start position of the driving circuit may be determined according to the timing chart, that is, scanning is started from a certain line, or scanning is started from a certain position of a certain line; then, the first scanning frequency and the first scanning starting position are used as first scanning information, so that the information of the first area, namely the information of the area corresponding to the dark band or the area with low brightness in the liquid crystal display device can be determined according to the first scanning information, and the first area is further compensated.
In an embodiment, the step of obtaining the second scanning information of the backlight module of the liquid crystal display device includes:
acquiring a second scanning frequency of the backlight module;
acquiring a second scanning initial position of the backlight module;
taking the second scanning frequency and the second scanning starting position as second scanning information; after the first scanning information of the driving circuit is acquired, the second scanning information of the backlight module needs to be acquired, so that the information of the first area is determined according to the first scanning information and the second scanning information, the second scanning frequency of the backlight module can be acquired first, the second scanning frequency can be determined according to a driving timing diagram of the backlight module, meanwhile, the second scanning starting position can be determined according to the driving timing diagram of the backlight module, namely, scanning is started from a certain line of light sources of the backlight module, or scanning is started from a certain point of a certain line of light sources of the backlight module, so that the second scanning starting position is obtained, and then the second scanning information is obtained according to the second scanning frequency and the second scanning starting position.
In one embodiment, the step of obtaining the area size of the first region in the liquid crystal display device according to the first scanning information and the second scanning information includes:
obtaining the number of the first sub-areas according to the first scanning frequency and the second scanning frequency;
acquiring the area of the first sub-area;
obtaining the area of the first region according to the number of the first sub-regions and the area of the first sub-regions; after the scanning information of the driving circuit and the backlight module is obtained, the number of the first sub-regions is obtained according to the first scanning frequency of the driving circuit and the second scanning frequency of the backlight module, and when the number needs to be described, the first region is not a region connected together, but a region composed of a plurality of first sub-regions, for example, when the first region presents a plurality of same dark bands, the first region is the sum of the areas of the plurality of dark bands; in the process of obtaining the first sub-region according to the first scanning frequency and the second scanning frequency, considering that the first scanning frequency varies when different regions have uneven brightness, for example, when the brightness of each region of the liquid crystal display device is consistent, that is, when the liquid crystal display device normally displays, the first scanning frequency is a first numerical value, and the second scanning frequency is a second numerical value, but when a bright and dark band occurs in the liquid crystal display device, the first scanning frequency decreases, that is, a certain charging time decreases or even a charging is not performed, and a high potential is not present at the position on the timing chart, the number of the first sub-region can be correspondingly obtained through the variation of the first numerical value and the second numerical value, for example, a numerical value is obtained by dividing the first numerical value by the second numerical value, the number of the first sub-region is determined according to the variation of the numerical value, for example, the number of the obtained dark band is obtained, and then the area of the first sub-region is obtained, for example, the area of the first region can be obtained according to the number of the first sub-regions and the area of the first sub-regions; however, the embodiment of the present application is not limited to this, and the number of the first sub-regions may be obtained when the areas of the first sub-regions are different, and then the area of each first sub-region is obtained, so as to obtain the area of the first region.
In one embodiment, the step of obtaining the position information of the first area in the liquid crystal display device according to the first scanning information and the second scanning information comprises:
acquiring position information of the first sub-area according to the first scanning starting position and the second scanning starting position;
obtaining the position information of the first area according to the position information of the first sub-area; after the first scanning start position of the driving circuit and the second scanning start position of the backlight module are obtained, for example, after a timing chart of the gate voltage and a driving timing chart of the backlight module are obtained, since the timing chart of the gate voltage changes when a bright-dark band phenomenon occurs, the timing chart of the gate voltage and the driving timing chart of the backlight module are caused to deviate compared with a case that the liquid crystal display device normally displays, position information of the first sub-regions can be obtained according to the deviation, and correspondingly, the position information of the first regions can be obtained according to the position information of each first sub-region.
In one embodiment, the step of obtaining the position information of the first area in the liquid crystal display device according to the first scanning information and the second scanning information comprises:
acquiring position information of the second sub-area according to the first scanning starting position and the second scanning starting position;
obtaining the position information of the second area according to the position information of the second sub-area;
determining the position information of the first area according to the position information of the second area; when the position information of the first sub-area is obtained, the position information of the second area can be obtained according to the position information of the second sub-area, and then the position information of the first area is obtained according to the position information of the second area.
In an embodiment, the step of obtaining the compensation data according to the area of the first region and a preset condition includes:
acquiring the compensation time of a unit area, and taking the compensation time of the unit area as a preset condition;
determining the compensation time of the first region according to the compensation time of the unit area and the area of the first region;
taking the compensation time as compensation data; after the area of the first region is obtained, the compensation of the first region is determined according to the area of the first region, the compensation time of a unit area can be preset, meanwhile, after the area of the first region is obtained, the compensation time of the first region is obtained, and the first region is correspondingly compensated, so that the brightness of the first region is improved, and the brightness difference of different regions is relieved or even solved.
In one embodiment, the step of obtaining the compensation time per unit area includes:
acquiring first brightness of a first area in the liquid crystal display device;
acquiring second brightness of a second area in the liquid crystal display device;
obtaining the compensation brightness of a unit area according to the first brightness, the second brightness and the area of the first area;
obtaining the compensation time of the unit area according to the compensation brightness of the unit area; when the compensation time of the unit area is obtained, the brightness of the first area and the brightness of the second area, namely the first brightness of the first area corresponding to a low brightness even a dark band and the second brightness of the second area corresponding to a high brightness even a bright band, can be obtained first, then the difference value of the brightness of the first area and the brightness of the second area can be obtained after the first brightness and the second brightness are obtained, and the area of the first area is obtained, so the compensation brightness of the unit area can be obtained according to the area of the first area; after the compensation brightness of the unit area is obtained, the time required for charging the compensation brightness is obtained, and then the compensation time of the unit area can be obtained.
In one embodiment, the compensating the first region according to the compensation data and driving the liquid crystal display device according to the position information of the first region includes:
driving the liquid crystal display device using the driving data;
driving the first region for a compensation time using the driving data after the driving data drives the liquid crystal display device; when the liquid crystal display device is driven by the driving data, the first area is driven by the same driving data for the compensation time, so that the brightness of the first area is increased, and the brightness of the first area is consistent with that of the second area due to the compensation time taking the brightness of the first area and the second area into account.
As shown in fig. 5, an embodiment of the present application provides a liquid crystal display device, including:
a first acquiring module 211, configured to acquire first scanning information of a driving circuit of the liquid crystal display device;
a second obtaining module 212, configured to obtain second scanning information of the backlight module of the liquid crystal display device;
an area obtaining module 213, configured to obtain an area of a first region in the liquid crystal display device according to the first scanning information and the second scanning information, where the liquid crystal display device includes the first region and a second region, and luminance of the first region is smaller than luminance of the second region;
a position obtaining module 214, configured to obtain position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information;
a compensation data obtaining module 215, configured to obtain compensation data according to the area of the first region and a preset condition;
and the driving module 216 is configured to compensate the first region according to the compensation data according to the position information of the first region, and drive the liquid crystal display device.
The embodiment of the application provides a liquid crystal display device, and the driving method of the liquid crystal display device comprises the steps of obtaining first scanning information of a driving circuit of the liquid crystal display device, obtaining second scanning information of a backlight module of the liquid crystal display device, obtaining the area of a first region in the liquid crystal display device according to the first scanning information and the second scanning information, the liquid crystal display device includes a first region and a second region, the luminance of the first region being smaller than the luminance of the second region, obtaining position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information, obtaining compensation data according to the area of the first region and a preset condition, obtaining compensation data according to the position information of the first region, compensating the first area according to the compensation data and driving the liquid crystal display device; the first scanning information can change when the brightness of different areas of the liquid crystal display device is different, the driving information of the driving circuit and the first scanning information and the second scanning information of the backlight module are obtained, the information of the first area corresponding to the dark band is obtained according to the first scanning information and the second scanning information, the compensation data is obtained according to the information of the first area and the preset conditions, meanwhile, the position information of the first area is determined according to the first scanning information and the second scanning information, the first area is compensated according to the position information of the first area, the brightness of each area of the liquid crystal display device is consistent, and the technical problem that the phenomenon of the bright dark band occurs when the display is carried out due to the fact that the charging time of different areas is different in the existing liquid crystal display device is solved.
According to the above embodiment:
the embodiment of the application provides a liquid crystal display device and a driving method thereof, the driving method of the liquid crystal display device comprises the steps of obtaining first scanning information of a driving circuit of the liquid crystal display device, obtaining second scanning information of a backlight module of the liquid crystal display device, obtaining the area of a first region in the liquid crystal display device according to the first scanning information and the second scanning information, the liquid crystal display device includes a first region and a second region, the luminance of the first region being smaller than the luminance of the second region, obtaining position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information, obtaining compensation data according to the area of the first region and a preset condition, obtaining compensation data according to the position information of the first region, compensating the first area according to the compensation data and driving the liquid crystal display device; the first scanning information can change when the brightness of different areas of the liquid crystal display device is different, the driving information of the driving circuit and the first scanning information and the second scanning information of the backlight module are obtained, the information of the first area corresponding to the dark band is obtained according to the first scanning information and the second scanning information, the compensation data is obtained according to the information of the first area and the preset conditions, meanwhile, the position information of the first area is determined according to the first scanning information and the second scanning information, the first area is compensated according to the position information of the first area, the brightness of each area of the liquid crystal display device is consistent, and the technical problem that the phenomenon of the bright dark band occurs when the display is carried out due to the fact that the charging time of different areas is different in the existing liquid crystal display device is solved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The liquid crystal display device and the driving method thereof provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments above is only used to help understanding the technical solutions and the core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (8)
1. A method of driving a liquid crystal display device, comprising:
acquiring first scanning information of a driving circuit of a liquid crystal display device; the method comprises the following steps: acquiring a first scanning frequency of the driving circuit; acquiring a first scanning starting position of the driving circuit; taking the first scanning frequency and the first scanning starting position as first scanning information;
acquiring second scanning information of a backlight module of the liquid crystal display device; the method comprises the following steps: acquiring a second scanning frequency of the backlight module; acquiring a second scanning initial position of the backlight module; taking the second scanning frequency and the second scanning starting position as second scanning information;
obtaining the area of a first area in the liquid crystal display device according to the first scanning information and the second scanning information, wherein the liquid crystal display device comprises the first area and a second area, and the brightness of the first area is smaller than that of the second area;
obtaining position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information;
obtaining compensation data according to the area of the first area and a preset condition;
and compensating the first area according to the compensation data according to the position information of the first area, and driving the liquid crystal display device.
2. The method for driving a liquid crystal display device according to claim 1, wherein the step of obtaining the size of the area of the first region in the liquid crystal display device based on the first scanning information and the second scanning information comprises:
obtaining the number of first sub-areas according to the first scanning frequency and the second scanning frequency;
acquiring the area of the first sub-area;
and obtaining the area of the first area according to the number of the first sub-areas and the area of the first sub-areas.
3. The liquid crystal display device driving method according to claim 2, wherein the step of obtaining the position information of the first area in the liquid crystal display device based on the first scanning information and the second scanning information comprises:
acquiring position information of the first sub-area according to the first scanning starting position and the second scanning starting position;
and obtaining the position information of the first area according to the position information of the first sub-area.
4. The liquid crystal display device driving method according to claim 2, wherein the step of obtaining the position information of the first area in the liquid crystal display device based on the first scanning information and the second scanning information comprises:
acquiring position information of a second sub-area according to the first scanning starting position and the second scanning starting position;
obtaining the position information of the second area according to the position information of the second sub-area;
and determining the position information of the first area according to the position information of the second area.
5. The method for driving a liquid crystal display device according to claim 1, wherein the step of obtaining compensation data according to the area of the first region and a preset condition comprises:
acquiring the compensation time of a unit area, and taking the compensation time of the unit area as a preset condition;
determining the compensation time of the first region according to the compensation time of the unit area and the area of the first region;
and taking the compensation time as compensation data.
6. The liquid crystal display device driving method according to claim 5, wherein the step of acquiring the compensation time per unit area comprises:
acquiring first brightness of a first area in the liquid crystal display device;
acquiring second brightness of a second area in the liquid crystal display device;
obtaining the compensation brightness of a unit area according to the first brightness, the second brightness and the area of the first area;
and obtaining the compensation time of the unit area according to the compensation brightness of the unit area.
7. The liquid crystal display device driving method according to claim 5, wherein the compensating the first region based on the compensation data based on the position information of the first region and driving the liquid crystal display device comprises:
driving the liquid crystal display device using the driving data;
and driving the first region for a compensation time using the driving data after the driving data drives the liquid crystal display device.
8. A liquid crystal display device, comprising:
the first acquisition module is used for acquiring first scanning information of a driving circuit of the liquid crystal display device; the method is specifically used for: acquiring a first scanning frequency of the driving circuit; acquiring a first scanning starting position of the driving circuit; taking the first scanning frequency and the first scanning starting position as first scanning information;
the second acquisition module is used for acquiring second scanning information of the backlight module of the liquid crystal display device; the method is specifically used for: acquiring a second scanning frequency of the backlight module; acquiring a second scanning initial position of the backlight module; taking the second scanning frequency and the second scanning starting position as second scanning information;
the area acquisition module is used for acquiring the area of a first area in the liquid crystal display device according to the first scanning information and the second scanning information, the liquid crystal display device comprises the first area and a second area, and the brightness of the first area is smaller than that of the second area;
the position acquisition module is used for acquiring position information of a first area in the liquid crystal display device according to the first scanning information and the second scanning information;
the compensation data acquisition module is used for acquiring compensation data according to the area of the first area and a preset condition;
and the driving module is used for compensating the first area according to the compensation data and the position information of the first area and driving the liquid crystal display device.
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| CN111986629B (en) * | 2020-08-07 | 2021-09-03 | 深圳市华星光电半导体显示技术有限公司 | Method and device for improving liquid crystal display panel fault phenomenon and display panel |
| CN115512664A (en) * | 2021-06-23 | 2022-12-23 | 广州视源电子科技股份有限公司 | Display panel backlight driving method and device, computer equipment and storage medium |
| CN115188346B (en) * | 2022-07-27 | 2023-07-25 | 苏州华星光电技术有限公司 | Brightness compensation method of display module and display module |
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