CN108022563A - Low latency liquid crystal display device and its driving method based on subregion backlight - Google Patents
Low latency liquid crystal display device and its driving method based on subregion backlight Download PDFInfo
- Publication number
- CN108022563A CN108022563A CN201810094701.4A CN201810094701A CN108022563A CN 108022563 A CN108022563 A CN 108022563A CN 201810094701 A CN201810094701 A CN 201810094701A CN 108022563 A CN108022563 A CN 108022563A
- Authority
- CN
- China
- Prior art keywords
- subregion
- display
- backlight
- driving
- liquid crystal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of low latency liquid crystal display device and its driving method based on subregion backlight, the liquid crystal display device includes the subregion backlight of some array distributions, and the driving method includes：S1, to display screen active array rank scanning, obtain the image gray-scale level of current pixel, obtain image gray-scale level matrix；S2, image gray-scale level matrix electro-optical curve according to display device is normalized, and obtains display driving matrix；S3, according to subregion backlight will show that driving matrix is divided into one-to-one display subregion, and obtain the position of the display subregion residing for current pixel；S4, the position of display subregion according to residing for current pixel and the gray-scale distribution statistics of each display subregion of display driving matrix progress, backlight coefficient when each display subregion is lighted is calculated according to each display subregion gray-scale distribution statistics, and according to current pixel the location of in show subregion and current display subregion drive matrix in display in the location of it is definite needed for the display subregion lighted.
Description
Technical field
The present invention relates to technical field of liquid crystal display, more particularly to a kind of low latency liquid crystal display based on subregion backlight
Device and its driving method.
Background technology
The development of display terminal is gradually transitions video from simple picture presentation and shows, recently as the fast of Streaming Media
Speed development, people propose the demand of higher for the video image quality of display device, and image quality resolution, color are pursued also in tradition
On the basis of originality, contrast etc., video playing reproduces dynamic menu for display device and it is also proposed new technical requirements, wherein
One importance is to improve motion blur.
Motion blur is mainly display device limited response time and the vision tracking of human eye and space for source
What resolution characteristic together decided on, it is however generally that, the response of more than 4ms is mainly what is determined by the response time of display device.Tool
Body, by taking LCD display part as an example, the response time of IPS/FFS is usually 20-30ms, and the clock frequency of display is usually
60Hz.Adjacent inter picture is if any there are swiftly passing object, since the response time of liquid crystal is longer than interframe switching rate,
Thus can be there are certain vision conditions of streaking so as to produce motion blur.
At present, the solution of motion blur mainly includes：Inserted using high-frequency drive, using picture black frame insertion, using backlight
Black etc., wherein high-frequency drive can efficiently solve fuzzy pictures phenomenon, while not have undesirable display defect in image quality, but
The speed of response for being high-frequency drive for liquid crystal, the new hardware requirement of generation such as data volume that drives IC, and black insertion technology can
The problem of improving motion blur problems using the visual persistence effect of human eye, but overall picture being brought partially dark at the same time.
Therefore, for above-mentioned technical problem, it is necessary to provide a kind of low latency liquid crystal display device based on subregion backlight
And its driving method.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the invention to provide the low latency liquid crystal display based on subregion backlight
Device and its driving method.
To achieve these goals, the technical solution that one embodiment of the invention provides is as follows：
A kind of driving method of the low latency liquid crystal display device based on subregion backlight, if the liquid crystal display device includes
The subregion backlight of dry array distribution, the driving method include：
S1, to display screen active array rank scanning, obtain the image gray-scale level of current pixel, obtain image gray-scale level matrix；
S2, image gray-scale level matrix electro-optical curve according to display device is normalized, and obtains display driving square
Battle array；
S3, according to subregion backlight will show that driving matrix is divided into one-to-one display subregion, and obtain current pixel
The position of residing display subregion；
S4, the position of display subregion according to residing for current pixel and the grayscale of each display subregion of display driving matrix progress
Distribution statistics, backlight coefficient when each display subregion is lighted is calculated according to each display subregion gray-scale distribution statistics, and according to current
Point needed for pixel is definite in location in showing subregion and currently display subregion location in display driving matrix
Bright display subregion.
As a further improvement on the present invention, the step S4 includes：
If S41, current pixel (x, y) show first pixel of subregion for place, and place shows that subregion shows for m rows
When showing the first row of subregion, m row subregion backlights are closed；
If S42, current pixel (x, y) are last pixel of current display subregion, according to each display subregion grayscale point
The backlight coefficient B lu (m, n) of display subregion where cloth statistics calculates current pixel.
As a further improvement on the present invention, the step S42 is further included：
If currently display subregion shows last row of subregion for m rows, point before current display subregion K rows is lighted
Area's backlight；
If current pixel (x, y) is last pixel of present frame, the backlight coefficient of the display subregion previous frame is made
For current backlight coefficient.
As a further improvement on the present invention, described " K " value is：
K=Integer (Tup*m/16.7), wherein, Tup is the rising edge response time of liquid crystal, and Integer grasps for rounding
Make.
As a further improvement on the present invention, the computational methods of backlight coefficient are in the step S4：
The grayscale feature Distribution value of sub-pixel in the current display subregion of statistics, calculate each display subregion lights coefficient, institute
Stating grayscale characteristic value includes the grayscale maximum and grey scale average value of sub-pixel.
As a further improvement on the present invention, the driving method further includes：
Obtain the backlight coefficient that previous frame respectively shows subregion；
Calculate backlight illumination of the current pixel when each display subregion backlight is all lighted；
Display with reference to present frame drives matrix computations gray scale compensation signal and exports to light display screen.
As a further improvement on the present invention, the electro-optical curve in the step S2 is gamma curve, display driving matrix
For indata (x, y, 3)=(gray/2^N)gamma, gray is image gray-scale level.
As a further improvement on the present invention, the value of Gamma is 2.2 in the display driving matrix.
The technical solution that another embodiment of the present invention provides is as follows：
A kind of low latency liquid crystal display device based on subregion backlight, the liquid crystal display device include back light unit, show
Display screen and the driving unit of driving back light unit and display screen, the back light unit include the subregion backlight of some array distributions,
The driving unit includes being used for the backlight driving unit for lighting back light unit and the liquid crystal drive list for lighting display screen
Member, the driving unit carry out the driving of liquid crystal display device by above-mentioned driving method.
As a further improvement on the present invention, the back light unit includes the Mini-LED light sources of some array distributions.
According to the feature of liquid crystal low speed response, lighting for delay regular hour progress current bay backlight, makes the present invention
The corresponding liquid crystal molecule angle of any pixel of subregion backlight almost deflects into the corresponding grayscale electricity of the pixel when obtaining backlight lightening
Pressure, the response time of liquid crystal display device is significantly improved by black insertion technology；
Mini-LED high brightness feature can ensure that although backlight only lights finite time in present frame and can also provide foot
Enough brightness, avoid traditional black insertion technology because back light source brightness limitation caused by display device luminance shortage problem, at the same time
Also solve unstable feature of the Mini-LED area sources in small current driving.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in invention, for those of ordinary skill in the art, without creative efforts,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the flow chart of the driving method of the low latency liquid crystal display device of the invention based on subregion backlight.
Fig. 2 a are the structure diagram of liquid crystal display device in the embodiment of the present invention 1, and Fig. 2 b are to be carried on the back in the embodiment of the present invention 1
The schematic diagram of light unit.
Fig. 3 is the flow chart of the driving method of low latency liquid crystal display device in embodiment 2 in the present invention.
Fig. 4 is the schematic diagram for increasing backlight illumination in driving method of the present invention.
Embodiment
In order to make those skilled in the art more fully understand the technical solution in the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this area is common
Technical staff's all other embodiments obtained without making creative work, should all belong to protection of the present invention
Scope.
The invention discloses a kind of low latency liquid crystal display device based on subregion backlight, liquid crystal display device includes backlight
Unit, display screen and the driving unit of driving back light unit and display screen, the subregion that back light unit includes some array distributions are carried on the back
Light, driving unit include being used for the backlight driving unit for lighting back light unit and the unit for lighting display screen.
Correspondingly, join shown in Fig. 1, the invention also discloses a kind of low latency liquid crystal display device based on subregion backlight
Driving method, the driving method include：
S1, to display screen active array rank scanning, obtain the image gray-scale level of current pixel, obtain image gray-scale level matrix；
S2, image gray-scale level matrix electro-optical curve according to display device is normalized, and obtains display driving square
Battle array；
S3, according to subregion backlight will show that driving matrix is divided into one-to-one display subregion, and obtain current pixel
The position of residing display subregion；
S4, the position of display subregion according to residing for current pixel and the grayscale of each display subregion of display driving matrix progress
Distribution statistics, backlight coefficient when each display subregion is lighted is calculated according to each display subregion gray-scale distribution statistics, and according to current
Point needed for pixel is definite in location in showing subregion and currently display subregion location in display driving matrix
Bright display subregion.
Wherein, step S4 includes：
If S41, current pixel (x, y) show first pixel of subregion for place, and place shows that subregion shows for m rows
When showing the first row of subregion, m row subregion backlights are closed；
If S42, current pixel (x, y) are last pixel of current display subregion, according to each display subregion grayscale point
The backlight coefficient B lu (m, n) of display subregion where cloth statistics calculates current pixel.
Step S42 is further included：
If currently display subregion shows last row of subregion for m rows, point before current display subregion K rows is lighted
Area's backlight；
If current pixel (x, y) is last pixel of present frame, the backlight coefficient of the display subregion previous frame is made
For current backlight coefficient.
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1：
Join shown in Fig. 2 a, Fig. 2 b, the liquid crystal display device in the present embodiment includes back light unit 10, array base palte 20, liquid
Crystal layer 30, pixel layer 40, color membrane substrates 50 and polarizer 60, in addition, further including the backlight drive for lighting back light unit 20
Unit and the unit for lighting display screen (liquid crystal layer 30 etc.).
Wherein, back light unit 10 uses 2D zoning designs, includes the subregion backlights of some array distributions, horizontal and vertical point
Area's number is respectively M and N, and display screen is corresponded with subregion backlight, and display screen corresponds to and is divided into some display subregions.
In the present embodiment, in the design of subregion backlight, using flood tide small size Mini-LED arrays as light source, a side
Frivolous advantage has been taken into account in face, although while the high brightness feature of Mini-LED can ensure that backlight has only been lighted in present frame
Enough brightness can be also provided between in limited time, avoid traditional black insertion technology because display device caused by back light source brightness limitation is bright
Problem that degree is insufficient, while also solve Mini-LED area sources and (can be accounted in the unstable feature of small current driving according to lighting
Sky is than the driving current in corresponding lifting lighting time).
Embodiment 2：
Join shown in Fig. 3, the driving method of the low latency liquid crystal display device based on subregion backlight in the present embodiment, specific bag
Include：
S1, to display screen active array rank scanning, obtain the image gray-scale level of current pixel, obtain image gray-scale level matrix.
Wherein, image gray-scale level is gray (x, y, 3), wherein x ∈ [1, height], y ∈ [1, width], height,
Width is respectively defined as the height and the width of image, and 3 represent tri- passages of R/G/B respectively.
S2, image gray-scale level matrix electro-optical curve EOTF according to display device is normalized, and obtains display and drives
Dynamic matrix.
Preferably, electro-optical curve is gamma curve, and display driving matrix is indata (x, y, 3)=(gray/2^N
)gamma, the gamma values in the present embodiment are the bit numbers that 2.2, N is display device, such as 6,8,10bit.
S3, according to subregion backlight will show that driving matrix indata is divided into one-to-one display subregion, and obtains and work as
The position (m, n) of display subregion residing for preceding pixel (x, y).
S4, the position for showing subregion according to residing for current pixel and display driving matrix indata carry out each display subregion
Gray-scale distribution statistics HISTM*N, backlight system when each display subregion is lighted is calculated according to each display subregion gray-scale distribution statistics
Number, and according to current pixel the location of in show subregion and current display subregion drive matrix in display in residing for position
Put the display subregion lighted needed for determining.
The step mainly realizes two purposes, and one is the backlight coefficient for calculating each subregion backlight, the other is determining
Which subregion backlight (display for realizing which display subregion) lighted.
Specifically, step S4 includes：
If S41, current pixel (x, y) show first pixel of subregion for place, and place shows that subregion shows for m rows
When showing the first row of subregion, i.e. Blu (m, 1), closes m row subregion backlights；
If S42, current pixel (x, y) are last pixel of current display subregion, according to each display subregion grayscale point
The backlight coefficient B lu (m, n) of display subregion where cloth statistics HISTM*N calculates current pixel, wherein, m ∈ [1, M], n ∈ [1,
N]。
Wherein, step S42 further comprises：
If S421, current display subregion show last row of subregion for m rows, i.e. Blu (m, N), then light current aobvious
Show the subregion backlight before subregion K rows, i.e. backlight coefficient is Blu (m-K, n), n=1 ... N subregion backlights；
If S422, current pixel (x, y) are last pixel of present frame, by the backlight system of the display subregion previous frame
Number is as current backlight coefficient, i.e. assignment Blu_last (m, n)=Blu (m, n).
In addition, the computational methods of backlight coefficient are in step S4：
The grayscale feature Distribution value of sub-pixel in the current display subregion of statistics, calculate each display subregion lights coefficient, ash
Rank characteristic value includes grayscale maximum and grey scale average value of sub-pixel etc., is not especially limited herein.
The value of K is referring generally to the response time of liquid crystal, frame frequency and the number of partitions in the present embodiment, such as using 60Hz display screens as
Example, the time that a frame is shown is 16.7ms, then is about 16.7/m (ms) per the sweep time of a line subregion backlight.Assuming that liquid crystal
The rising edge response time is Tup, then is normally set up lighting backlight after current display pixel driving IC opens Tup, thus postpones K
≈ Integer (Tup*m/16.7), wherein Integer are floor operation.In addition, K further can show needs according to image quality
Carry out other settings.
In addition, the driving method in the present embodiment further includes：
S51, obtain the backlight coefficient B lu_last (m, n) that previous frame respectively shows subregion, wherein, m ∈ [1, M], n ∈ [1,
N]；
S52, calculate backlight illumination of the current pixel when each display subregion backlight is all lighted；
S53, the display driving matrix indata (x, y, 3) with reference to the obtained present frames of step S2 calculate gray scale compensation signal
Outdata (height, width, 3), and export to driving IC (unit) to light display screen, realize that grayscale is mended
Repay, improve display effect.
For from principle, for any display subregion, scan and closed when showing first pixel of subregion to place m rows
Current line subregion backlight, at this time liquid crystal molecule start gradually to deflect to expected angle under the action of driving voltage, during which spend
Time be about Tup.After the delay of K rows, above-mentioned subregion backlight is opened, and liquid crystal molecule has deflected to predetermined angle substantially at this time
Degree, it is thus possible to visually realize quick response, the high latency and motion blur of conventional liquid crystal can be significantly improved
Problem.
Wherein, using flood tide Mini-LED as light emitting source, thus with low light mixing distance, narrow frame, specular removal it is excellent
Gesture.Since using flood tide Mini-LED arrays, as light source, the driving current of traditional LED is 20mA, and flood tide Mini-LED's deposits
Cause any Mini-LED to be less than 20mA as backlight its driving current original, be generally only 1mA or so, thus with driving
The problem of unstable.
After needing to have counted the grayscale statistical distribution in the subregion for from type of drive, on traditional subregion Backlight Algorithm
It could determine the backlight coefficient of current bay, thus can not realize that light current bay backlight in real time in present frame (leads on strategy
Frequently with previous frame result of calculation as present frame backlight coefficient), have a frame system delay, when fast scene switches
It can not accomplish backlight synchronization.
And the present invention uses above-mentioned driving method, any subregion in any one frame picture, subregion backlight illumination is one
Light, namely be consistently experienced by the fully closed black state of one section of backlight and backlight lightening time, from human eye after delay K rows in frame picture
The reduction of visual brightness is inevitably brought in visual perception.To solve the above problems, namely keep normally holding with tradition
It is continuous to light the same visual brightness of backlight photo, a clear zone can reversely be increased according to the actual duty cycle lighted of backlight in driving method
Between backlight illumination (namely increase driving current), on the one hand concrete principle schematic diagram is refering to what is shown in Fig. 4, make full use of Mini-
The characteristics of LED area light source high brightness, while the driving current of any subregion backlight is added to a certain extent, it is bright with stablizing
The advantages of spending.
The backlight coefficient of any subregion backlight in the present embodiment is lighted after K row subregions are postponed, thus
The grayscale statistical distribution in a frame time can be used to light backlight, rather than used completely using traditional subregion backlight driving method
Backlight coefficient of the grayscale statistical distribution of previous frame as present frame, can better adapt to fast-changing scene switching, keep away
Exempt from picture to occur postponing and non-continuous event.
The embodiment of the present invention also provides a kind of electronic equipment.The electronic equipment include at least one processor and with it is described
The memory of at least one processor connection, the memory are used to store the finger that can be performed by least one processor
Order, when described instruction is performed by least one processor, makes at least one processor perform in above-described embodiment
Driving method.
The embodiment of the present invention additionally provides a kind of non-transient storage media, is stored with computer executable instructions, the meter
Calculation machine executable instruction is arranged to carry out above-mentioned driving method.
The embodiment of the present invention additionally provides a kind of computer program product, and the computer program product includes being stored in non-
Computer program in transitory computer readable storage medium, the computer program include programmed instruction, when described program refers to
When order is computer-executed, the computer is set to perform above-mentioned driving method.
Liquid crystal display device provided in an embodiment of the present invention can perform the driving method that any embodiment of the present invention is provided,
Possess the corresponding function module of execution method and beneficial effect.Not ins and outs of detailed description in the above-described embodiments, can join
See the driving method that any embodiment of the present invention is provided.
Compared with prior art, the invention has the advantages that：
According to the feature of liquid crystal low speed response, the delay regular hour carries out lighting for current bay backlight so that backlight
The corresponding liquid crystal molecule angle of any pixel of subregion backlight almost deflects into the corresponding gray scale voltage of the pixel when lighting, and passes through
Black insertion technology significantly improves the response time of liquid crystal display device；
Mini-LED high brightness feature can ensure that although backlight only lights finite time in present frame and can also provide foot
Enough brightness, avoid traditional black insertion technology because back light source brightness limitation caused by display device luminance shortage problem, at the same time
Also solve unstable feature of the Mini-LED area sources in small current driving.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (10)
- A kind of 1. driving method of the low latency liquid crystal display device based on subregion backlight, it is characterised in that the liquid crystal display Device includes the subregion backlight of some array distributions, and the driving method includes：S1, to display screen active array rank scanning, obtain the image gray-scale level of current pixel, obtain image gray-scale level matrix；S2, image gray-scale level matrix electro-optical curve according to display device is normalized, and obtains display driving matrix；S3, according to subregion backlight will show that driving matrix is divided into one-to-one display subregion, and obtain residing for current pixel Display subregion position；S4, the position of display subregion according to residing for current pixel and the gray-scale distribution of each display subregion of display driving matrix progress Statistics, backlight coefficient when each display subregion is lighted is calculated according to each display subregion gray-scale distribution statistics, and according to current pixel The location of in showing subregion and current display subregion in display drive matrix in the location of determine needed for light Show subregion.
- 2. driving method according to claim 1, it is characterised in that the step S4 includes：If S41, current pixel (x, y) show first pixel of subregion for place, and place shows that subregion is shown point for m rows During the first row in area, m row subregion backlights are closed；If S42, current pixel (x, y) are last pixel of current display subregion, according to each display subregion gray-scale distribution system The backlight coefficient B lu (m, n) of display subregion where meter calculates current pixel.
- 3. driving method according to claim 2, it is characterised in that the step S42 is further included：If currently display subregion shows last row of subregion for m rows, the subregion back of the body before current display subregion K rows is lighted Light；If current pixel (x, y) is last pixel of present frame, using the backlight coefficient of the display subregion previous frame as work as Preceding backlight coefficient.
- 4. driving method according to claim 3, it is characterised in that " K " value is：K=Integer (Tup*m/16.7), wherein, Tup is the rising edge response time of liquid crystal, and Integer is floor operation.
- 5. driving method according to any one of claim 1 to 4, it is characterised in that backlight coefficient in the step S4 Computational methods be：The grayscale feature Distribution value of sub-pixel in the current display subregion of statistics, calculate each display subregion lights coefficient, the ash Rank characteristic value includes the grayscale maximum and grey scale average value of sub-pixel.
- 6. driving method according to claim 1, it is characterised in that the driving method further includes：Obtain the backlight coefficient that previous frame respectively shows subregion；Calculate backlight illumination of the current pixel when each display subregion backlight is all lighted；Display with reference to present frame drives matrix computations gray scale compensation signal and exports to light display screen.
- 7. driving method according to claim 1, it is characterised in that the electro-optical curve in the step S2 is bent for Gamma Line, display driving matrix is indata (x, y, 3)=(gray/2^N)gamma, gray is image gray-scale level.
- 8. driving method according to claim 7, it is characterised in that the value of Gamma is in the display driving matrix 2.2。
- 9. a kind of low latency liquid crystal display device based on subregion backlight, it is characterised in that the liquid crystal display device includes the back of the body Light unit, display screen and the driving unit of driving back light unit and display screen, the back light unit include some array distributions Subregion backlight, the driving unit include being used for the backlight driving unit for lighting back light unit and the liquid for lighting display screen Brilliant driving unit, the driving unit carry out liquid crystal display device by driving method according to any one of claims 1 to 7 Driving.
- 10. liquid crystal display device according to claim 9, it is characterised in that the back light unit includes some arrays point The Mini-LED light sources of cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810094701.4A CN108022563B (en) | 2018-01-31 | 2018-01-31 | Low-delay liquid crystal display device based on partitioned backlight and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810094701.4A CN108022563B (en) | 2018-01-31 | 2018-01-31 | Low-delay liquid crystal display device based on partitioned backlight and driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108022563A true CN108022563A (en) | 2018-05-11 |
| CN108022563B CN108022563B (en) | 2020-08-28 |
Family
ID=62075058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810094701.4A Active CN108022563B (en) | 2018-01-31 | 2018-01-31 | Low-delay liquid crystal display device based on partitioned backlight and driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108022563B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461413A (en) * | 2019-01-04 | 2019-03-12 | 京东方科技集团股份有限公司 | A kind of backlight driving method, device and liquid crystal display device |
| CN111048053A (en) * | 2020-01-03 | 2020-04-21 | Tcl华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| CN112967660A (en) * | 2020-08-25 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | Display control method and device and display equipment |
| CN114373432A (en) * | 2021-12-30 | 2022-04-19 | 长沙惠科光电有限公司 | Lateral-entering type liquid crystal display panel and control method thereof |
| CN114627826A (en) * | 2022-03-15 | 2022-06-14 | 北京显芯科技有限公司 | Backlight control method, apparatus, device, storage medium and program product |
| CN114639353A (en) * | 2021-12-31 | 2022-06-17 | 广东晶科电子股份有限公司 | Driving method of image and backlight data low-delay synchronous display device and display device |
| CN116597790A (en) * | 2023-07-14 | 2023-08-15 | 南京信息工程大学 | Pixel mapping method for liquid crystal panel and backlight module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060214904A1 (en) * | 2005-03-24 | 2006-09-28 | Kazuto Kimura | Display apparatus and display method |
| CN103778898A (en) * | 2014-02-28 | 2014-05-07 | 帝豪电子（扬州）有限公司 | Dynamic dimming method of liquid crystal display LED backlight |
| US20150097875A1 (en) * | 2010-03-24 | 2015-04-09 | Sony Corporation | Liquid crystal display |
| CN106205497A (en) * | 2015-04-29 | 2016-12-07 | 青岛海信电器股份有限公司 | A kind of method for controlling backlight thereof, device and liquid crystal indicator |
| CN106228936A (en) * | 2016-09-28 | 2016-12-14 | 青岛海信电器股份有限公司 | Backlight brightness control method, Apparatus and liquid crystal display equipment |
-
2018
- 2018-01-31 CN CN201810094701.4A patent/CN108022563B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060214904A1 (en) * | 2005-03-24 | 2006-09-28 | Kazuto Kimura | Display apparatus and display method |
| US20150097875A1 (en) * | 2010-03-24 | 2015-04-09 | Sony Corporation | Liquid crystal display |
| CN103778898A (en) * | 2014-02-28 | 2014-05-07 | 帝豪电子（扬州）有限公司 | Dynamic dimming method of liquid crystal display LED backlight |
| CN106205497A (en) * | 2015-04-29 | 2016-12-07 | 青岛海信电器股份有限公司 | A kind of method for controlling backlight thereof, device and liquid crystal indicator |
| CN106228936A (en) * | 2016-09-28 | 2016-12-14 | 青岛海信电器股份有限公司 | Backlight brightness control method, Apparatus and liquid crystal display equipment |
Non-Patent Citations (1)
| Title |
|---|
| 高上等: "带有反馈调节的直下式LED背光源驱动设计", 《现代显示》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109461413A (en) * | 2019-01-04 | 2019-03-12 | 京东方科技集团股份有限公司 | A kind of backlight driving method, device and liquid crystal display device |
| CN111048053A (en) * | 2020-01-03 | 2020-04-21 | Tcl华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| CN112967660A (en) * | 2020-08-25 | 2021-06-15 | 重庆康佳光电技术研究院有限公司 | Display control method and device and display equipment |
| CN114373432A (en) * | 2021-12-30 | 2022-04-19 | 长沙惠科光电有限公司 | Lateral-entering type liquid crystal display panel and control method thereof |
| CN114373432B (en) * | 2021-12-30 | 2023-10-24 | 长沙惠科光电有限公司 | Side-in type liquid crystal display panel and control method thereof |
| CN114639353A (en) * | 2021-12-31 | 2022-06-17 | 广东晶科电子股份有限公司 | Driving method of image and backlight data low-delay synchronous display device and display device |
| CN114627826A (en) * | 2022-03-15 | 2022-06-14 | 北京显芯科技有限公司 | Backlight control method, apparatus, device, storage medium and program product |
| CN116597790A (en) * | 2023-07-14 | 2023-08-15 | 南京信息工程大学 | Pixel mapping method for liquid crystal panel and backlight module |
| CN116597790B (en) * | 2023-07-14 | 2023-09-19 | 南京信息工程大学 | Pixel mapping method for liquid crystal panel and backlight module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108022563B (en) | 2020-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108022563A (en) | Low latency liquid crystal display device and its driving method based on subregion backlight | |
| CN109036295B (en) | Image display processing method and device, display device and storage medium | |
| JP4796038B2 (en) | Image display method | |
| US8648780B2 (en) | Motion adaptive black data insertion | |
| TWI357044B (en) | Display driving circuit | |
| KR101232086B1 (en) | Liquid crystal display and local dimming control method of thereof | |
| EP1701332A2 (en) | Backlit display device with reduced flickering and blur | |
| US7898519B2 (en) | Method for overdriving a backlit display | |
| EP2218306B1 (en) | Driving pixels of a display | |
| JP4141708B2 (en) | Liquid crystal display device and driving method thereof | |
| TWI421844B (en) | Liquid crystal display and method of driving the same | |
| TWI417851B (en) | Driving apparatus and method of liquid crystal display | |
| KR20170010175A (en) | Display apparatus and method for driving thereof | |
| JP2009244717A (en) | Display panel control device, liquid crystal display device, electronics apparatus, and display panel drive control method | |
| JP2004062134A (en) | Liquid crystal display | |
| CN109637406A (en) | A kind of display methods of display device, display device and readable storage medium storing program for executing | |
| JP2015049336A (en) | Display device, light-emitting device, and control method of display device | |
| CN101370339A (en) | LED back light module unit driving method | |
| WO2014107887A1 (en) | Method for selecting frc pattern | |
| US20110254873A1 (en) | Liquid crystal display | |
| CN110246465A (en) | Image display processing method and device, electronic equipment, computer-readable medium | |
| JP2007249236A (en) | Method of driving liquid crystal display | |
| JP5171746B2 (en) | Driving method of liquid crystal display device | |
| KR101777867B1 (en) | Liquid crystal display and driving method thereof | |
| KR20110036209A (en) | Liquid crystal display and local dimming control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |