CN112017604B - Driving method, driving device, display device and computer readable storage medium - Google Patents
Driving method, driving device, display device and computer readable storage medium Download PDFInfo
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- CN112017604B CN112017604B CN201910468226.7A CN201910468226A CN112017604B CN 112017604 B CN112017604 B CN 112017604B CN 201910468226 A CN201910468226 A CN 201910468226A CN 112017604 B CN112017604 B CN 112017604B
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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
- G09G3/3696—Generation of voltages supplied to electrode drivers
Abstract
The invention provides a driving method, a driving apparatus, a display apparatus and a computer-readable storage medium. The driving method is applied to the liquid crystal display panel, and comprises the following steps: determining the brightness level of each sub-region according to the backlight brightness of each sub-region; acquiring a voltage regulation relation corresponding to the brightness level of each sub-area; and determining the driving voltage of each pixel in each sub-area according to the voltage regulation relation. The liquid crystal display panel comprises a plurality of sub-regions, corresponding voltage regulation relations are determined according to the brightness of each sub-region in the implementation process, and under the condition that the display gray scale is the same, the driving voltage of the pixels in the sub-regions with high brightness levels is larger than the driving voltage of the pixels in the sub-regions with low brightness levels, RC delay increase caused by brightness increase can be offset, so that the consistency of charging rates of the sub-regions with different brightness levels is improved, and the possibility of poor display of the liquid crystal display panel in a waterfall-shaped block mode is reduced.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a driving method, a driving apparatus, a display apparatus, and a computer-readable storage medium.
Background
The backlight brightness distribution uniformity of large-size LCD (Liquid Crystal Display) panels is relatively poor, some large-size LCD panels also have a Local dimming (backlight area adjustment technology) function to adjust the backlight brightness, and the Local dimming refers to dividing an image signal into a plurality of areas in a Liquid Crystal television system, performing analysis and calculation according to the image brightness of each area, and then automatically controlling the backlight brightness of each area.
Characteristics of an Active tail region (tail end of a thin film transistor Active layer) of a pixel unit TFT inside an LCD panel are changed under the influence of illumination, when the Active tail region is illuminated, the Active tail is enhanced in conduction, capacitance is increased, Data RC delay (Data resistance capacitance delay) is increased, charging rate is reduced, and slow moving or static transverse blocks (blocks) can be generated, so that poor displaying of waterfall-shaped blocks is caused.
Therefore, the large-sized LCD panel, especially the large-sized LCD panel with Local dimming function, is prone to display defects in the form of waterfall-shaped regions.
Disclosure of Invention
Embodiments of the present invention provide a driving method, a driving apparatus, a display apparatus, and a computer-readable storage medium, so as to solve a problem that a waterfall-shaped block display defect is easily generated on an LCD panel.
In a first aspect, an embodiment of the present invention provides a driving method, applied to a liquid crystal display panel, where the liquid crystal display panel includes a plurality of sub-regions, and the driving method includes:
determining the brightness level of each sub-region according to the backlight brightness of each sub-region;
acquiring a voltage regulation relation corresponding to the brightness level of each sub-area, wherein the voltage regulation relation is a corresponding relation between the driving voltage of the pixel and the display gray scale, and the driving voltage of the pixel in the sub-area with high brightness level is larger than the driving voltage of the pixel in the sub-area with low brightness level under the condition that the display gray scale is the same;
and determining the driving voltage of each pixel in each sub-area according to the voltage regulation relation.
Optionally, the determining the brightness level of each sub-region according to the backlight brightness of each sub-region includes:
acquiring backlight information of the liquid crystal display panel, wherein the backlight information comprises brightness distribution of backlight units of a backlight module of the liquid crystal display panel, the number of the backlight units and flicker frequency of the backlight units;
and calculating the lighting quantity of the backlight unit corresponding to each sub-region according to the backlight information, and determining the brightness level of each sub-region according to the lighting quantity of the backlight unit corresponding to each sub-region.
Optionally, the liquid crystal display panel includes a memory, and the obtaining of the voltage adjustment relationship corresponding to the brightness level of each of the sub-regions includes:
and calling an overvoltage driving table stored in the memory according to the brightness level corresponding to each group of the sub-regions to serve as the voltage regulation relation.
Optionally, before invoking the corresponding overvoltage driving table according to the brightness levels corresponding to the sub-regions of each group to serve as the voltage regulation relationship, the method further includes:
respectively acquiring a first overvoltage driving table corresponding to the lowest brightness grade and a second overvoltage driving table corresponding to the highest brightness grade;
and calculating an overvoltage driving table corresponding to each brightness grade through a linear difference value according to the first overvoltage driving table and the second overvoltage driving table, and storing the overvoltage driving table into the memory.
In a second aspect, an embodiment of the present invention provides a driving apparatus for driving a liquid crystal display panel, where the liquid crystal display panel includes a plurality of sub-regions, the driving apparatus including:
the brightness level determining module is used for determining the brightness level of each sub-region according to the backlight brightness of each sub-region;
a voltage regulation relation obtaining module, configured to obtain a voltage regulation relation corresponding to the brightness level of each sub-region, where the voltage regulation relation is a correspondence between a driving voltage of a pixel and a display gray scale, and the driving voltage of the pixel in the sub-region with a high brightness level is greater than the driving voltage of the pixel in the sub-region with a low brightness level when the display gray scales are the same;
and the driving voltage determining module is used for determining the driving voltage of each pixel in each sub-area according to the voltage regulation relation.
Optionally, the brightness level determining module includes:
the acquisition submodule is used for acquiring backlight information of the liquid crystal display panel, wherein the backlight information comprises brightness distribution of backlight units of a backlight module of the liquid crystal display panel, the number of the backlight units and flicker frequency of the backlight units;
and the determining submodule is used for calculating the lighting quantity of the backlight unit corresponding to each sub-region according to the backlight information and determining the brightness level of each sub-region according to the lighting quantity of the backlight unit corresponding to each sub-region.
Optionally, the liquid crystal display panel includes a memory, and the voltage adjustment relationship obtaining module is specifically configured to call an overvoltage driving table stored in the memory according to the brightness level corresponding to each group of the sub-regions, so as to serve as the voltage adjustment relationship.
Optionally, the method further includes: the overvoltage acquisition module is used for respectively acquiring a first overvoltage driving table corresponding to the lowest brightness grade and a second overvoltage driving table corresponding to the highest brightness grade;
and the calculating module is used for calculating the overvoltage driving table corresponding to each brightness grade through a linear difference value according to the first overvoltage driving table and the second overvoltage driving table and storing the overvoltage driving table into the memory.
In a third aspect, an embodiment of the present invention provides a display device, including a liquid crystal display panel, a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the driving method according to any one of the above items.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the driving method described in any one of the above.
The liquid crystal display panel comprises a plurality of sub-regions, corresponding voltage regulation relations are determined according to the brightness of each sub-region in the implementation process, and under the condition that the display gray scale is the same, the driving voltage of the pixels in the sub-regions with high brightness levels is larger than the driving voltage of the pixels in the sub-regions with low brightness levels, RC delay increase caused by brightness increase can be offset, so that the consistency of charging rates of the sub-regions with different brightness levels is improved, and the possibility of poor display of the liquid crystal display panel in a waterfall-shaped block mode is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a liquid crystal display panel;
FIG. 2 is a waveform diagram of PWM dimming;
FIG. 3 is a schematic diagram of data RC delay for PWM dimming;
FIG. 4 is a schematic view of another structure of an LCD panel;
FIG. 5 is a flow chart of a driving method according to an embodiment of the invention;
FIG. 6 is a schematic view of a liquid crystal display panel according to an embodiment of the present invention;
FIG. 7 is an over-voltage driving table according to an embodiment of the present invention;
FIG. 8 is a diagram illustrating a relationship between display gray levels and driving voltages according to an embodiment of the present invention;
FIG. 9 shows another corresponding relationship between display gray levels and driving voltages according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a driving device according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. 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 invention.
The embodiment of the invention provides a driving method which is applied to a liquid crystal display panel.
The lcd panel is usually powered by ac power, so the light emitted from the backlight source changes in brightness at a certain frequency, which causes the light entering the lcd panel to change in brightness at a certain frequency. As shown in fig. 1, a liquid crystal display panel includes a Color Filter (CF)110, a Black Matrix (BM)120 and a Thin Film Transistor (TFT)130, the TFT130 includes an Active layer (Active)131, a data line (data)132 and other structures or film layers, which are referred to the existing and possible liquid crystal display panels and are not further limited and described herein. The Active tail area of the pixel unit TFT inside the liquid crystal display panel is influenced by the light from the backlight source.
As shown in fig. 2, fig. 2 is a waveform diagram of PWM (Pulse Width Modulation) dimming in which the backlight periodically flashes. Specifically, the peak 201 is the case where the backlight is present, and the valley 202 is the case where the backlight is absent.
As shown in fig. 3, the solid line curve represents the Data voltage when there is no illumination, the dashed line curve represents the Data voltage when there is illumination, and the lateral distance of the curve represents the Data RC delay, that is, the distance between the left end point of each peak or valley and the intersection point with the curve represents the Data RC delay. In the case of backlight illumination, the Active tail is enhanced in conductivity and increased in capacitance, so that the Data RC delay is increased, the charging rate is reduced, and the greater the illumination intensity is, the greater the Data RC delay is, the corresponding charging rate is reduced.
As shown in fig. 4, a liquid crystal display panel includes a plurality of sub-regions 401, the backlight intensity in each sub-region 401 should be substantially the same at each time, and the present embodiment is exemplified by a total of 12 sub-regions 401 including three rows and four columns. When the sub-area 401 is divided according to the situation, for example, the sub-area 401 may be divided into sub-areas with a specified size, or divided into different adjustment areas corresponding to the Local timing function. The backlight source of the liquid crystal display panel is a plurality of LED particles 402, and the backlight brightness of each sub-region is different due to the distribution of the LED particles 402.
As shown in fig. 5, in one embodiment, the driving method includes the steps of:
step 501: and determining the brightness level of each sub-area according to the backlight brightness of each sub-area.
As can be seen from the above analysis, the backlight brightness has an effect on the charging rate of the liquid crystal display panel, and the charging rate of the liquid crystal display panel has a difference due to the brightness difference, so the brightness level of each sub-region is determined first in this embodiment.
Optionally, in a specific embodiment, the step 501 specifically includes:
acquiring backlight information of the liquid crystal display panel, wherein the backlight information comprises brightness distribution of backlight units of a backlight module of the liquid crystal display panel, the number of the backlight units and flicker frequency of the backlight units;
and calculating the lighting quantity of the backlight unit corresponding to each sub-region according to the backlight information, and determining the brightness level of each sub-region according to the lighting quantity of the backlight unit corresponding to each sub-region.
The lcd panel may be implemented for the backlight source, which may include but is not limited to LED (light emitting diode) particles, tubular light sources, light bulbs, linear light sources, flat panel fluorescent lights, etc., electroluminescent layers, etc., and corresponding backlight information may be collected according to the selected backlight source. For example, in the case that the backlight unit is an LED particle, the collected backlight information is a light and dark distribution of the LED particle, the number of the LED particles, and a flicker frequency of the LED particle.
In this embodiment, the backlight of the lcd panel is provided by backlight units, and the number and the distribution of brightness and darkness of each backlight unit directly affect the backlight brightness of each sub-region.
For the liquid crystal display panel with the Local dimming function, the brightness of some backlight units may be adjusted according to the requirement, so that not all backlight units may be in the lighting state, and therefore the brightness distribution of the backlight units needs to be collected.
Since the distribution of the backlight units results in that some sub-regions correspond to more backlight units, and other sub-regions correspond to less backlight units, it is obvious that when the backlight units are all operated, the more the number of the backlight units is, the higher the luminance of the corresponding sub-regions is, and therefore, the number of the backlight units has a certain influence on the backlight luminance.
The backlight unit flashing process comprises two states of flashing and extinguishing, and the two states have different influences on the screen charging rate, so that the flashing frequency of the backlight unit also has an influence on the brightness of each subarea.
After the backlight information is collected, the brightness level of each sub-area is further determined. For some lcd panels with backlight sources without adjusting function, the brightness level of each sub-region may be fixed, while for lcd panels with backlight sources that may change, for example, lcd panels with backlight sources adjusted by Local dimming function, the brightness level of each sub-region may change.
For example, in the case where the backlight unit of the backlight is LED particles, the lowest brightness of the backlight is the all-off state of the LED particles, which corresponds to the lowest brightness level; the maximum brightness of the backlight source is that the number of the LED particles corresponding to one sub-region is the largest, and the LED particles are in a full-bright state, and correspondingly, the state corresponds to the highest brightness level. The specific brightness levels can be divided according to actual conditions, and obviously, the higher the number of the divided brightness levels is, the more accurate the control on the liquid crystal display panel is.
In this embodiment, four brightness levels are divided, that is, a first Level1 corresponding to full-off of LED particles, a fourth Level4 corresponding to full-on of LED particles, and a second Level2 and a third Level3 which are gradually increased in brightness and located between the first Level and the fourth Level.
Step 502: and acquiring a voltage regulation relation corresponding to the brightness level of each sub-area.
The voltage regulation relationship in this embodiment is the corresponding relationship between the driving voltage of the pixel and the display gray scale. Due to the influence of the backlight on the charging rate, the driving voltage of the pixel may not be the same as the actual display gray scale, for example, due to insufficient charging rate, the driving voltage corresponds to the gray scale of L131, and the actual display gray scale may only have the gray scale of L124. Therefore, a corresponding voltage regulation relationship needs to be obtained to determine the actual output pixel driving voltage, so that the actual display effect can be expected.
Since the charging rate of the sub-area having a high luminance level is lower than that of the sub-area having a low luminance level, the actual driving voltages of the pixels in the sub-areas having different luminance levels are different in the case where the actual display gray scales of the two pixels are the same, and the driving voltage of the pixel in the sub-area having a high luminance level is higher than that of the pixel in the sub-area having a low luminance level. The corresponding voltage regulation relationship needs to be determined according to the brightness level of each sub-region.
In practice, as shown in fig. 6, the backlight information such as backlight partition, LED particle brightness distribution and quantity, frequency information, etc. is collected by a control chip (SOC)601 and then transmitted to a logic driver circuit board (TCONIC)602, for example, through I2C or SPI (Serial Peripheral Interface) completes data transmission, and then TCON IC calculates the number of the lighting of the backlight unit in each sub-area to judge the brightness level.
Optionally, the step 502 specifically includes:
and calling an overvoltage driving Table (Line OD Table) stored in the memory according to the brightness level corresponding to each group of sub-regions to serve as the voltage regulation relation.
In this embodiment, a corresponding overvoltage driving table is set for each brightness level, fig. 7 is an overvoltage driving table of a liquid crystal display panel at a certain brightness level, and the specification of the overvoltage driving table can be selected according to actual situations, for example, an overvoltage driving table with 19 rows and 19 columns, 9 rows and 9 columns, or 33 rows and 33 columns.
The Over Driving (OD) refers to a driving method in which a driving voltage is not equal to a display gray scale.
The first row of the over-voltage driving table represents the gray scale displayed before the pixel, the leftmost column represents the gray scale displayed next by the pixel, and the gray scale searched from the table according to the row and the column is the gray scale corresponding to the actual driving voltage. Taking an example of determining the driving voltage pair process of a certain pixel according to the over-voltage driving table, when the previous display gray scale of a certain pixel is L96, and the next gray scale to be displayed is L128, the current gray scale L96 of the pixel in the first row of the over-voltage driving table is first searched for, which is the 9 th row in the first row shown in fig. 7, then the next display gray scale L128 of the pixel in the leftmost row of the over-voltage driving table is searched for, which is the 11 th row in the first row in fig. 7, and the gray scale corresponding to the driving voltage determined by the over-voltage driving table for the 9 th row and the 11 th row is L131, so that, when the pixel pair gray scale is L96 pairs, the actual driving voltage corresponding to the pixel is controlled to be L131, and the next actual display gray scale of the pixel can be L128.
Referring to fig. 8 and 9, in fig. 8 and 9, the left side represents the actual display gray scale, and the right side represents the actual driving voltage of the pixel corresponding to the gray scale. Fig. 8 represents the case of no backlight illumination, in which case the driving voltage of a certain pixel is L193 and the actual display gray scale is L192. Fig. 9 represents a case where backlight is applied, in which case the driving voltage of a certain pixel is L195 and the actual display gray scale is L192. Therefore, under the condition of different brightness, the current display gray scale of the pixel, the next actual display gray scale of the pixel and the next actual driving voltage of the pixel correspond to different voltage regulation relations. Therefore, the corresponding pair of overvoltage driving tables needs to be called as a voltage regulation relation according to the brightness level of each sub-region, so that the actual display gray scale is ensured to be the same as the expected display gray scale.
Optionally, before invoking the corresponding overvoltage driving table according to the brightness levels corresponding to the sub-regions of each group to serve as the voltage regulation relationship, the method further includes:
respectively acquiring a first overvoltage driving table corresponding to the lowest brightness grade and a second overvoltage driving table corresponding to the highest brightness grade;
and calculating the overvoltage driving table corresponding to each brightness grade through a linear difference value according to the first overvoltage driving table and the second overvoltage driving table, and storing the overvoltage driving table into the memory.
The overvoltage driving table corresponding to each brightness level can be measured in an experimental manner, then stored, called when needed, and the overvoltage driving table can be obtained in a calculation manner.
In a specific embodiment, the minimum brightness level and the maximum brightness level respectively correspond to the backlight unit being completely off and the backlight unit being completely on, so that the overvoltage driving tables in the two states are relatively determined, in implementation, the two groups of overvoltage driving tables can be obtained through experimental measurement and the like, and then stored, as shown in fig. 6, for example, stored in the memory 603, when the overvoltage driving tables corresponding to different brightness levels need to be obtained, the control circuit (TCON IC) reads the two groups of overvoltage driving tables in the memory, then calculates the overvoltage driving tables corresponding to other brightness levels through linear interpolation, and stores the calculated overvoltage driving tables in the memory 603, and when the pixel pair driving voltage needs to be determined according to the voltage regulation relationship, the memory 603 is called to store the overvoltage driving tables.
Step 503: and determining the driving voltage of each pixel in each sub-area according to the voltage regulation relation.
According to the target display gray scale of each pixel in each sub-area and the corresponding voltage regulation relation, the driving voltage of each pixel in each sub-area can be determined, and each pixel is driven by the driving voltage, so that the actual display gray scale of each pixel is the target display gray scale, namely, the actual display effect is basically the same as the expected display effect.
As shown in fig. 6, the pixels are driven by the Source Driver 604 according to the determined driving voltage.
The liquid crystal display panel comprises a plurality of sub-regions, corresponding voltage regulation relations are determined according to the brightness of each sub-region in the implementation process, and under the condition that the display gray scale is the same, the driving voltage of the pixels in the sub-regions with high brightness levels is larger than the driving voltage of the pixels in the sub-regions with low brightness levels, and the increase of Data RC delay caused by the increase of the brightness can be offset, so that the consistency of charging rates of the sub-regions with different brightness levels is improved, and the possibility of poor display of the liquid crystal display panel in a waterfall-shaped block mode is reduced.
As shown in fig. 10, an embodiment of the present invention further provides a driving apparatus 1000 for driving a liquid crystal display panel, where the liquid crystal display panel includes a plurality of sub-regions, and the driving apparatus 1000 includes:
a brightness level determining module 1001, configured to determine a brightness level of each sub-region according to the backlight brightness of each sub-region;
a voltage regulation relation obtaining module 1002, configured to obtain a voltage regulation relation corresponding to the brightness level of each sub-region, where the voltage regulation relation is a corresponding relation between a driving voltage of a pixel and a display gray scale, and the driving voltage of the pixel in the sub-region with the high brightness level is greater than the driving voltage of the pixel in the sub-region with the low brightness level when the display gray scales are the same;
a driving voltage determining module 1003, configured to determine a driving voltage of each pixel in each sub-area according to the voltage adjusting relationship.
Optionally, the brightness level determining module 1001 includes:
the acquisition submodule is used for acquiring backlight information of the liquid crystal display panel, wherein the backlight information comprises brightness distribution of backlight units of a backlight module of the liquid crystal display panel, the number of the backlight units and flicker frequency of the backlight units;
and the determining submodule is used for calculating the lighting quantity of the backlight unit corresponding to each sub-region according to the backlight information and determining the brightness level of each sub-region according to the lighting quantity of the backlight unit corresponding to each sub-region.
Optionally, the liquid crystal display panel includes a memory, and the voltage adjustment relationship obtaining module 1002 is specifically configured to call an overvoltage driving table stored in the memory according to the brightness level corresponding to each group of the sub-regions, so as to serve as the voltage adjustment relationship.
Optionally, the method further includes: the overvoltage acquisition module is used for respectively acquiring a first overvoltage driving table corresponding to the lowest brightness grade and a second overvoltage driving table corresponding to the highest brightness grade;
and the calculating module is used for calculating the overvoltage driving table corresponding to each brightness grade through a linear difference value according to the first overvoltage driving table and the second overvoltage driving table and storing the overvoltage driving table into the memory.
The driving apparatus 1000 of this embodiment can implement the steps of the driving method embodiment shown in fig. 5, and can implement the corresponding technical effects, which are not described herein again.
Preferably, an embodiment of the present invention further provides a display device, which includes a liquid crystal display panel, a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the driving method embodiment, and can achieve the same technical effect, and details are not repeated here to avoid repetition.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the driving method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A driving method applied to a liquid crystal display panel for adjusting a Data RC delay of the liquid crystal display panel, wherein the liquid crystal display panel comprises a plurality of sub-regions, the driving method comprises the following steps:
determining the brightness level of each sub-region according to the backlight brightness of each sub-region;
acquiring a voltage regulation relation corresponding to the brightness level of each sub-area, wherein the voltage regulation relation is a corresponding relation between the driving voltage of the pixel and the display gray scale, and the driving voltage of the pixel in the sub-area with high brightness level is larger than the driving voltage of the pixel in the sub-area with low brightness level under the condition that the display gray scale is the same;
and determining the driving voltage of each pixel in each sub-area according to the voltage regulation relation.
2. The driving method as claimed in claim 1, wherein said determining a brightness level of each of said sub-regions according to a backlight brightness of each of said sub-regions comprises:
acquiring backlight information of the liquid crystal display panel, wherein the backlight information comprises brightness distribution of backlight units of a backlight module of the liquid crystal display panel, the number of the backlight units and flicker frequency of the backlight units;
and calculating the lighting quantity of the backlight unit corresponding to each sub-region according to the backlight information, and determining the brightness level of each sub-region according to the lighting quantity of the backlight unit corresponding to each sub-region.
3. The driving method according to claim 1, wherein the liquid crystal display panel includes a memory, and the obtaining of the voltage adjustment relationship corresponding to the brightness level of each of the sub-regions includes:
and calling an overvoltage driving table stored in the memory according to the brightness level corresponding to each group of the sub-regions to serve as the voltage regulation relation.
4. The driving method according to claim 3, wherein before invoking the corresponding over-voltage driving table according to the brightness levels corresponding to the sub-regions of each group as the voltage regulation relationship, the method further comprises:
respectively acquiring a first overvoltage driving table corresponding to the lowest brightness grade and a second overvoltage driving table corresponding to the highest brightness grade;
and calculating the overvoltage driving table corresponding to each brightness grade through a linear difference value according to the first overvoltage driving table and the second overvoltage driving table, and storing the overvoltage driving table into the memory.
5. A driving apparatus for driving a liquid crystal display panel for adjusting a Data RC delay of the liquid crystal display panel, the liquid crystal display panel including a plurality of sub-regions, the driving apparatus comprising:
the brightness level determining module is used for determining the brightness level of each sub-region according to the backlight brightness of each sub-region;
the voltage regulation relation acquisition module is used for acquiring a voltage regulation relation corresponding to the brightness level of each sub-area, wherein the voltage regulation relation is a corresponding relation between the driving voltage of the pixel and the display gray scale, and the driving voltage of the pixel in the sub-area with high brightness level is greater than the driving voltage of the pixel in the sub-area with low brightness level under the condition that the display gray scale is the same;
and the driving voltage determining module is used for determining the driving voltage of each pixel in each sub-area according to the voltage regulation relation.
6. The driving apparatus as claimed in claim 5, wherein the brightness level determining module comprises:
the acquisition submodule is used for acquiring backlight information of the liquid crystal display panel, wherein the backlight information comprises brightness distribution of backlight units of a backlight module of the liquid crystal display panel, the number of the backlight units and flicker frequency of the backlight units;
and the determining submodule is used for calculating the lighting quantity of the backlight units corresponding to each sub-region according to the backlight information and determining the brightness level of each sub-region according to the lighting quantity of the backlight units corresponding to each sub-region.
7. The driving apparatus as claimed in claim 5, wherein the liquid crystal display panel includes a memory, and the voltage adjustment relationship obtaining module is specifically configured to invoke an overvoltage driving table stored in the memory according to the brightness level corresponding to each group of the sub-regions as the voltage adjustment relationship.
8. The drive of claim 7, further comprising:
the overvoltage acquisition module is used for respectively acquiring a first overvoltage driving table corresponding to the lowest brightness grade and a second overvoltage driving table corresponding to the highest brightness grade;
and the calculating module is used for calculating the overvoltage driving table corresponding to each brightness grade through a linear difference value according to the first overvoltage driving table and the second overvoltage driving table and storing the overvoltage driving table into the memory.
9. A display device comprising a liquid crystal display panel, a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the driving method according to any one of claims 1 to 4.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the driving method of any one of claims 1 to 4.
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| CN114546104A (en) * | 2021-12-23 | 2022-05-27 | 北京德为智慧科技有限公司 | Display adjusting method and device, electronic equipment and storage medium |
| CN114613340B (en) * | 2022-03-17 | 2023-08-08 | 北京京东方显示技术有限公司 | Display panel, display module and system, display driving method and device |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004219938A (en) * | 2003-01-17 | 2004-08-05 | Fujitsu Ltd | Method for driving liquid crystal display device and liquid crystal display device |
| CN1864193A (en) * | 2003-10-10 | 2006-11-15 | 皇家飞利浦电子股份有限公司 | Electroluminescent display devices |
| CN101123068A (en) * | 2006-08-01 | 2008-02-13 | 卡西欧计算机株式会社 | Display drive apparatus and display apparatus |
| CN101222810A (en) * | 2008-01-18 | 2008-07-16 | 上海广电光电子有限公司 | Directly-down type LCD backlight source control device |
| CN101325038A (en) * | 2007-06-15 | 2008-12-17 | 群康科技(深圳)有限公司 | LCD and driving method thereof |
| CN102449383A (en) * | 2010-04-07 | 2012-05-09 | 索尼公司 | Display device and lighting device |
| CN103310752A (en) * | 2013-06-05 | 2013-09-18 | 合肥京东方光电科技有限公司 | Gamma voltage adjusting method and gamma voltage adjusting system |
| CN104658501A (en) * | 2015-03-05 | 2015-05-27 | 深圳市华星光电技术有限公司 | Voltage conversion circuit, display panel and driving method of display panel |
| CN104952402A (en) * | 2014-03-27 | 2015-09-30 | 株式会社日本显示器 | Display device and display device drive method |
| CN105304028A (en) * | 2015-12-09 | 2016-02-03 | 青岛海信电器股份有限公司 | Image processing method and liquid crystal display |
| CN105425476A (en) * | 2016-01-04 | 2016-03-23 | 京东方科技集团股份有限公司 | Manufacturing device and method for alignment film |
| CN105469742A (en) * | 2016-01-15 | 2016-04-06 | 京东方科技集团股份有限公司 | Organic light emitting display and display device |
| CN105679254A (en) * | 2016-04-12 | 2016-06-15 | 武汉华星光电技术有限公司 | Control method for reducing power consumption of LCD module group |
| CN105807485A (en) * | 2014-12-30 | 2016-07-27 | 上海冠显光电科技有限公司 | Liquid crystal display module, device and control method |
| CN205656597U (en) * | 2016-04-20 | 2016-10-19 | 广东斯麦特光电科技有限公司 | Touch display screen |
| CN106128371A (en) * | 2016-09-08 | 2016-11-16 | 京东方科技集团股份有限公司 | A kind of device, display device and the method that picture brightness strengthens |
| CN107342053A (en) * | 2016-05-02 | 2017-11-10 | 三星显示有限公司 | Display device and its driving method |
| CN107481673A (en) * | 2017-08-14 | 2017-12-15 | 上海天马有机发光显示技术有限公司 | A kind of organic electroluminescence display panel and its driving method and drive device |
| CN107578759A (en) * | 2017-10-31 | 2018-01-12 | 武汉华星光电技术有限公司 | A kind of display drive method and relevant apparatus |
| CN108492770A (en) * | 2018-03-27 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of pixel compensation circuit, its driving method and display panel, display device |
| CN109308882A (en) * | 2018-11-28 | 2019-02-05 | 武汉华星光电技术有限公司 | The driving method of display panel |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5929083B2 (en) * | 2011-10-04 | 2016-06-01 | ソニー株式会社 | Display device |
| JP2013195869A (en) * | 2012-03-22 | 2013-09-30 | Japan Display West Co Ltd | Liquid crystal display apparatus, method of driving liquid crystal display apparatus, and electronic apparatus |
| KR102258239B1 (en) * | 2013-11-12 | 2021-06-02 | 삼성디스플레이 주식회사 | Backlight unit and display device comprising the backlight unit |
| CN105741792B (en) * | 2014-12-10 | 2018-08-14 | 青岛海信电器股份有限公司 | A kind of gray-scale intensity method of adjustment, device and 3D display equipment |
| CN105869598B (en) * | 2016-06-07 | 2019-06-11 | 武汉华星光电技术有限公司 | The driving method and liquid crystal display of liquid crystal display |
| TWI616858B (en) * | 2017-04-06 | 2018-03-01 | 友達光電股份有限公司 | Method for overdriving, timing controller and display |
| CN109003583A (en) * | 2018-09-18 | 2018-12-14 | 惠科股份有限公司 | Display device and its driving method |
| CN109545142B (en) * | 2018-12-28 | 2020-10-20 | 上海天马微电子有限公司 | Pixel driving circuit, method, display panel and display device |
| CN109559674B (en) * | 2019-01-29 | 2021-08-17 | 合肥京东方显示技术有限公司 | Shifting register unit and driving method thereof, grid driving circuit and display device |
-
2019
- 2019-05-31 CN CN201910468226.7A patent/CN112017604B/en active Active
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004219938A (en) * | 2003-01-17 | 2004-08-05 | Fujitsu Ltd | Method for driving liquid crystal display device and liquid crystal display device |
| CN1864193A (en) * | 2003-10-10 | 2006-11-15 | 皇家飞利浦电子股份有限公司 | Electroluminescent display devices |
| CN101123068A (en) * | 2006-08-01 | 2008-02-13 | 卡西欧计算机株式会社 | Display drive apparatus and display apparatus |
| CN101325038A (en) * | 2007-06-15 | 2008-12-17 | 群康科技(深圳)有限公司 | LCD and driving method thereof |
| CN101222810A (en) * | 2008-01-18 | 2008-07-16 | 上海广电光电子有限公司 | Directly-down type LCD backlight source control device |
| CN102449383A (en) * | 2010-04-07 | 2012-05-09 | 索尼公司 | Display device and lighting device |
| CN103310752A (en) * | 2013-06-05 | 2013-09-18 | 合肥京东方光电科技有限公司 | Gamma voltage adjusting method and gamma voltage adjusting system |
| CN104952402A (en) * | 2014-03-27 | 2015-09-30 | 株式会社日本显示器 | Display device and display device drive method |
| CN105807485A (en) * | 2014-12-30 | 2016-07-27 | 上海冠显光电科技有限公司 | Liquid crystal display module, device and control method |
| CN104658501A (en) * | 2015-03-05 | 2015-05-27 | 深圳市华星光电技术有限公司 | Voltage conversion circuit, display panel and driving method of display panel |
| CN105304028A (en) * | 2015-12-09 | 2016-02-03 | 青岛海信电器股份有限公司 | Image processing method and liquid crystal display |
| CN105425476A (en) * | 2016-01-04 | 2016-03-23 | 京东方科技集团股份有限公司 | Manufacturing device and method for alignment film |
| CN105469742A (en) * | 2016-01-15 | 2016-04-06 | 京东方科技集团股份有限公司 | Organic light emitting display and display device |
| CN105679254A (en) * | 2016-04-12 | 2016-06-15 | 武汉华星光电技术有限公司 | Control method for reducing power consumption of LCD module group |
| CN205656597U (en) * | 2016-04-20 | 2016-10-19 | 广东斯麦特光电科技有限公司 | Touch display screen |
| CN107342053A (en) * | 2016-05-02 | 2017-11-10 | 三星显示有限公司 | Display device and its driving method |
| CN106128371A (en) * | 2016-09-08 | 2016-11-16 | 京东方科技集团股份有限公司 | A kind of device, display device and the method that picture brightness strengthens |
| CN107481673A (en) * | 2017-08-14 | 2017-12-15 | 上海天马有机发光显示技术有限公司 | A kind of organic electroluminescence display panel and its driving method and drive device |
| CN107578759A (en) * | 2017-10-31 | 2018-01-12 | 武汉华星光电技术有限公司 | A kind of display drive method and relevant apparatus |
| CN108492770A (en) * | 2018-03-27 | 2018-09-04 | 京东方科技集团股份有限公司 | A kind of pixel compensation circuit, its driving method and display panel, display device |
| CN109308882A (en) * | 2018-11-28 | 2019-02-05 | 武汉华星光电技术有限公司 | The driving method of display panel |
Non-Patent Citations (2)
| Title |
|---|
| Design and Simulation of the Pixel Circuit for a 6-in Full HD LTPS TFT LCD Based on the New Digital Driving Method;Ya-Hsiang Tai;《Journal of Display Technology》;20150108;全文 * |
| LCD显示器色彩还原技术的研究与实现;罗福根;《中国优秀硕士学位论文全文数据库 (信息科技辑)》;20161015;全文 * |
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