CN107591140A - Driving device and display device - Google Patents
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Abstract
The invention discloses a driving device and a display device. After the signal acquisition unit acquires the data signal of the picture, the display searching unit acquires a first driving voltage signal and a second driving voltage signal corresponding to the data signal; the first generation unit generates a first quasi-driving voltage signal according to a first preset generation rule and generates a second quasi-driving voltage signal according to a second preset generation rule from the first driving voltage signal and the second driving voltage signal; the factor calculating unit calculates a high-frequency factor corresponding to each pixel in the data signal according to a preset calculating rule; the second generating unit generates a driving voltage signal according to the high-frequency factor, the first quasi driving voltage signal and the second quasi driving voltage signal; the driving unit drives the display panel to display the picture according to the driving voltage signal. The device can improve the visual angle of the display device and the contrast of the picture in a large visual angle, and improve the problem of color cast of the picture in the large visual angle.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of drive device and display device.
Background technology
With the development of field of liquid crystal display, higher image quality has become the leading indicator of major display manufacturer.Visually
Angle turns into VA (VerticalAlignment, vertical orientation technology) type liquid crystal display as an important indicator of image quality
The important parameter of device.However, in existing VA types liquid crystal display device, the curve of transmitance and driving voltage under big visual angle
Serious skew can occur, this picture contrast resulted on big visual angle reduces, and the problem of colour cast easily occurs.
The content of the invention
The invention provides a kind of drive device and display device, is contrasted with improving picture of the display device on big visual angle
Degree, improve the colour cast problem at big visual angle.
The embodiment of the present invention provides a kind of drive device, and it includes：
Signal acquiring unit, for obtaining the data-signal of picture；
Searching unit is shown, for by showing that look-up table obtains the first drive voltage signal corresponding to the data-signal
With the second drive voltage signal, wherein first drive voltage signal is higher than benchmark driving voltage corresponding to the data-signal
Signal, second drive voltage signal are less than the benchmark drive voltage signal；
First generation subelement, for will first drive voltage signal and the second drive voltage signal according to described the
The mode that pixel corresponding to pixel corresponding to one drive voltage signal and second drive voltage signal is alternately arranged generates institute
State the first quasi- drive voltage signal；
Second generation subelement, for will first drive voltage signal and the second drive voltage signal according to described the
The mode that sub-pixel corresponding to sub-pixel corresponding to one drive voltage signal and second drive voltage signal is alternately arranged is given birth to
Into the described second quasi- drive voltage signal；
Factor calculating unit, for the high frequency according to corresponding to each pixel in the default computation rule calculating data-signal
The factor；
Second generation unit, for according to the high-frequency factor, the first quasi- drive voltage signal and the second quasi- driving voltage
Signal generation drive voltage signal；
Driver element, for driving the display panel to show the picture according to the drive voltage signal.
The embodiment of the present invention also provides a kind of drive device, and it includes：
Signal acquiring unit, for obtaining the data-signal of picture；
Searching unit is shown, for obtaining the first drive voltage signal corresponding to the data-signal and the second driving voltage
Signal, wherein first drive voltage signal is higher than benchmark drive voltage signal corresponding to the data-signal, described second
Drive voltage signal is less than the benchmark drive voltage signal；
First generation unit, for by first drive voltage signal and second drive voltage signal according to first
Default create-rule generates the first quasi- drive voltage signal and generates the second quasi- driving voltage according to the second default create-rule
Signal；
Factor calculating unit, for the high frequency according to corresponding to each pixel in the default computation rule calculating data-signal
The factor；
Second generation unit, for according to the high-frequency factor, the first quasi- drive voltage signal and the second quasi- driving voltage
Signal generation drive voltage signal；
Driver element, for driving the display panel to show the picture according to the drive voltage signal.
In drive device provided by the invention, the display searching unit is specifically used for obtaining by the first display look-up table
Take the first drive voltage signal corresponding to the data-signal；And the data-signal pair is obtained by the second display look-up table
The second drive voltage signal answered.
In drive device provided by the invention, first generation unit includes：
First generation subelement, for will first drive voltage signal and the second drive voltage signal according to described the
The mode that pixel corresponding to pixel corresponding to one drive voltage signal and second drive voltage signal is alternately arranged generates institute
State the first quasi- drive voltage signal；
Second generation subelement, for will first drive voltage signal and the second drive voltage signal according to described the
The mode that sub-pixel corresponding to sub-pixel corresponding to one drive voltage signal and second drive voltage signal is alternately arranged is given birth to
Into the described second quasi- drive voltage signal.
In drive device provided by the invention, the factor calculating unit includes：
Computation subunit, for calculating each sub-pixel and adjacent pixel in the data-signal in each pixel
In corresponding sub-pixel gray scale difference value；
Subelement is obtained, for obtaining the maximum in multiple gray scale difference values corresponding to the pixel as the pixel pair
The high-frequency factor answered.
In drive device provided by the invention, second generation unit includes：
Subelement is adjusted, for adjusting the first quasi- drive voltage signal and the second quasi- driving according to the high-frequency factor
The weight factor of voltage signal；
3rd generation subelement, for according to the described first quasi- drive voltage signal, the second quasi- drive voltage signal and its
Corresponding weight factor generates the drive voltage signal.
In drive device provided by the invention, the first generation subelement is specifically used for first driving voltage
Signal and the second drive voltage signal are provided with one according between the corresponding pixel of two neighboring first drive voltage signal
Between pixel corresponding to pixel corresponding to second drive voltage signal and two neighboring second drive voltage signal
The mode being alternately arranged provided with pixel corresponding to first drive voltage signal generates the described first quasi- driving voltage
Signal.
In drive device provided by the invention, the second generation subelement is specifically used for first driving voltage
Signal and the second drive voltage signal are provided with one according between the corresponding sub-pixel of two neighboring first drive voltage signal
Sub- picture corresponding to sub-pixel corresponding to individual second drive voltage signal and two neighboring second drive voltage signal
The mode being alternately arranged that sub-pixel corresponding to first drive voltage signal is provided between element generates second standard
Drive voltage signal.
In drive device provided by the invention, the adjustment subelement is specifically used for the high-frequency factor being arranged to institute
State the weight factor of respective pixel in the first quasi- drive voltage signal, and using 1 with the difference of the high-frequency factor as described in
The weight factor of respective pixel in second quasi- drive voltage signal.
The present invention provides a kind of display device again, and it includes：
Display panel；
Drive device, it is connected with the display panel, for driving the display panel display picture；
Wherein, the drive device is any one drive device provided by the invention.
The present invention provides a kind of drive device and display device.The drive device gets picture in signal acquiring unit
After data-signal, display searching unit obtains the first drive voltage signal and the second drive voltage signal corresponding to data-signal,
Wherein the first drive voltage signal is higher than benchmark drive voltage signal corresponding to data-signal, and the second drive voltage signal is less than base
Quasi- drive voltage signal；First generation unit is by the first drive voltage signal and the second drive voltage signal according to the first default life
The second quasi- drive voltage signal is generated into rule the first quasi- drive voltage signal of generation and according to the second default create-rule；Cause
Sub- computing unit high-frequency factor according to corresponding to default computation rule calculates each pixel in data-signal, and it is single by the second generation
Member generates drive voltage signal according to high-frequency factor, the first quasi- drive voltage signal and the second quasi- drive voltage signal；Most rear-guard
Moving cell drives display panel display picture according to drive voltage signal.The device can improve the visible angle of display device with
And on big visual angle picture contrast, improve picture on big visual angle and the problem of colour cast occur.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, it is required in being described below to embodiment to use
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of driving method provided in an embodiment of the present invention；
Fig. 2 is the idiographic flow schematic diagram of step S102 in driving method shown in Fig. 1；
Fig. 3 is the idiographic flow schematic diagram of step S103 in driving method shown in Fig. 1；
Fig. 4 is effect diagram corresponding to the first quasi- drive voltage signal in step S1031 shown in Fig. 3；
Fig. 5 is effect diagram corresponding to the second quasi- drive voltage signal in step S1032 shown in Fig. 3；
Fig. 6 is the idiographic flow schematic diagram of step S104 in driving method shown in Fig. 1；
Fig. 7 is the idiographic flow schematic diagram of step S105 in driving method shown in Fig. 1；
Fig. 8 is a kind of structural representation of drive device provided in an embodiment of the present invention；
Fig. 9 is a kind of structural representation of display device provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
Term " first ", " second " in the present invention etc. can be used to describe various elements herein, but these elements are not
It is limited by these terms.These terms are only used for distinguishing first element and another element.For example, the present invention is not being departed from
Scope in the case of, the first control can be referred to as the second control, and similarly, the second control can be referred to as the first control.
First control and the second control both controls, but it is not same control.In addition, term " comprising " and " having " and it
Any deformation, it is intended that cover non-exclusive include.
Referring to Fig. 1, Fig. 1 is the schematic flow sheet of driving method in the present embodiment.The driving method, which is used to drive, to be shown
Display panel display picture in device.Wherein, in certain embodiments, the display panel may be, for example, liquid crystal display panel,
OLED display panel, QLED display panels or other types display panel, are not particularly limited herein.The driving method includes step
Rapid S101 to S106.
S101, the data-signal for obtaining picture.
For display device in display picture, using showing frame by frame, every width picture is all corresponding with data-signal, and display device connects
After the data-signal for receiving a frame picture, processing is carried out to the data-signal of the picture and is converted into corresponding driving voltage, is passed through
Each pixel cell work is with display picture in driving voltage driving display panel.Therefore, in this example it is shown that device
The data-signal of picture is first obtained, and performs step S102.
S102, obtain the first drive voltage signal and the second drive voltage signal, wherein institute corresponding to the data-signal
State the first drive voltage signal and be higher than benchmark drive voltage signal corresponding to the data-signal, second drive voltage signal
Less than the benchmark drive voltage signal.
In one embodiment, specifically, by showing that searching unit obtains the first driving electricity corresponding to the data-signal
Press signal and the second drive voltage signal.Wherein, the display searching unit is RAM memory.Specifically, the display searching unit
For the memory in display device internal controller.After electricity in display device, display look-up table that controller will first store in ROM
(Look-Up-Table, abbreviation LUT) is read in display searching unit.
The corresponding relation of data-signal and driving voltage is stored with the display look-up table.Therefore, when display device obtains
, can be by showing that the display look-up table in searching unit obtains the first driving electricity corresponding to data-signal after getting data-signal
Press signal and the second drive voltage signal.
In the present embodiment, first drive voltage signal is higher than benchmark drive voltage signal corresponding to the data-signal,
Second drive voltage signal is less than the benchmark drive voltage signal.Wherein, the benchmark drive voltage signal refers to display device
When not carrying out voltage-regulation to driving voltage corresponding to data-signal, the driving voltage corresponding to data-signal.It is that is, aobvious
Showing device finds each sub-pixel in data-signal according to the corresponding relation between conventional gray value and driving voltage value
Driving voltage value corresponding to gray value, driving voltage value corresponding to the sub-pixel of entire picture form benchmark drive voltage signal.
First drive voltage signal is higher than the benchmark drive voltage signal, illustrates that display device is needed to entire picture
Driving voltage corresponding to data-signal carries out heightening processing.Second drive voltage signal is less than the benchmark drive voltage signal,
Illustrate that display device needs that driving voltage corresponding to the data-signal of entire picture is carried out to turn down processing.
In one embodiment, referring to Fig. 2, Fig. 2 illustrates for the idiographic flow of step S102 in the driving method shown in Fig. 1
Figure.Step S102 specifically includes step S1021 and S1022.
S1021, pass through the first drive voltage signal corresponding to the first display look-up table acquisition data-signal.
The first display look-up table is stored with display searching unit.The first display look-up table is used in memory data signal
The corresponding relation of gray value and the first driving voltage value.Display device can both get data letter according to the first display look-up table
First drive voltage signal corresponding to number.
It is understood that first drive voltage signal includes the first driving corresponding to each sub-pixel in entire picture
Magnitude of voltage.
S1022, pass through the second drive voltage signal corresponding to the second display look-up table acquisition data-signal.
The second display look-up table is also stored with display searching unit.The second display look-up table is used for memory data signal
The corresponding relation of middle gray value and the second driving voltage value.Display device can both get data according to the second display look-up table
Second drive voltage signal corresponding to signal.
It is understood that second drive voltage signal includes the second driving corresponding to each sub-pixel in entire picture
Magnitude of voltage.
S103, by first drive voltage signal and second drive voltage signal according to the first default create-rule
Generate the first quasi- drive voltage signal and generate the second quasi- drive voltage signal according to the second default create-rule.
In one embodiment, referring to Fig. 3, the idiographic flow signal that Fig. 3 is step S103 in driving method shown in Fig. 1
Figure.Step S103 specifically includes step S1031 to S1032.
S1031, first drive voltage signal and the second drive voltage signal believed according to first driving voltage
The mode that pixel corresponding to pixel corresponding to number and second drive voltage signal is alternately arranged generates the described first quasi- driving
Voltage signal.
In one embodiment, by first drive voltage signal and the second drive voltage signal according to the described first driving
The mode that pixel corresponding to pixel corresponding to voltage signal and second drive voltage signal is alternately arranged generates described first
Quasi- drive voltage signal includes：By first drive voltage signal and the second drive voltage signal according to two neighboring described the
Pixel and adjacent two corresponding to second drive voltage signal is provided between pixel corresponding to one drive voltage signal
Pixel corresponding to first drive voltage signal is provided between pixel corresponding to individual second drive voltage signal
The mode being alternately arranged generates the described first quasi- drive voltage signal.
Specifically, referring to Fig. 4, Fig. 4 is effect corresponding to the first quasi- drive voltage signal in step S1031 shown in Fig. 3
Schematic diagram.In Fig. 4, the first quasi- drive voltage signal is the group of the first drive voltage signal and the second drive voltage signal
Close.Pixel corresponding to first drive voltage signal in first quasi- drive voltage signal is labeled as the first pixel 10, and in pixel
In be filled with oblique line；Pixel corresponding to second drive voltage signal in first quasi- drive voltage signal is labeled as the second pixel
20。
From fig. 4, it can be seen that the first pixel 10 and the second pixel 20 are alternately arranged on line direction and column direction.Specifically
Ground, in the row direction and in a column direction, second pixel 20, and adjacent two are provided between two neighboring first pixel 10
First pixel 10 is provided between individual second pixel 20.Choose the first drive voltage signal corresponding to multiple first pixels 10 and
Second drive voltage signal corresponding to multiple second pixels 20 combines to form the first quasi- drive voltage signal corresponding to entire picture.
S1032, first drive voltage signal and the second drive voltage signal believed according to first driving voltage
It is accurate that the mode that sub-pixel corresponding to sub-pixel corresponding to number and second drive voltage signal is alternately arranged generates described second
Drive voltage signal.
In one embodiment, by first drive voltage signal and the second drive voltage signal according to the described first driving
The mode that sub-pixel corresponding to sub-pixel corresponding to voltage signal and second drive voltage signal is alternately arranged generates described
Second quasi- drive voltage signal, including：By first drive voltage signal with the second drive voltage signal according to two neighboring
Sub-pixel corresponding to second drive voltage signal is provided between sub-pixel corresponding to first drive voltage signal
And first drive voltage signal is provided between sub-pixel corresponding to two neighboring second drive voltage signal
The mode being alternately arranged of corresponding sub-pixel generates the described second quasi- drive voltage signal.
Specifically, referring to Fig. 5, Fig. 5 is effect corresponding to the second quasi- drive voltage signal in step S1032 shown in Fig. 3
Schematic diagram.In Figure 5, the second quasi- drive voltage signal is also the first drive voltage signal and the group of the second drive voltage signal
Close.Sub-pixel corresponding to first drive voltage signal in second quasi- drive voltage signal is labeled as the first sub-pixel 30, and
Oblique line is filled with sub-pixel；By sub-pixel corresponding to the second drive voltage signal in the second quasi- drive voltage signal labeled as the
Two sub-pixels 40.
From fig. 5, it can be seen that the first sub-pixel 30 and the second sub-pixel 40 are alternately arranged on line direction and column direction.
Specifically, in the row direction and in a column direction, second sub-pixel 40 is provided between two neighboring first sub-pixel 30, with
And first sub-pixel 30 is provided between two neighboring second sub-pixel 40.Choose first corresponding to multiple first sub-pixels 30
Second drive voltage signal corresponding to drive voltage signal and multiple second sub-pixels 40 combines to be formed corresponding to entire picture
Two quasi- drive voltage signals.
S104, the high-frequency factor according to corresponding to default computation rule calculates each pixel in the data-signal.
In the present embodiment, the high-frequency factor is used to characterize picture brightness intensity of variation.The higher theory of value of the high-frequency factor
The brightness of bright picture changes greatly, and is high frequency picture.Correspondingly, the brightness of the smaller explanation picture of the value of the high-frequency factor changes not
Substantially, it is low frequency picture.
In one embodiment, referring to Fig. 6, the idiographic flow signal that Fig. 6 is step S104 in driving method shown in Fig. 1
Figure.Step S104 includes step S1041 to S1042.
S1041, each sub-pixel calculated in the data-signal in each pixel are corresponding to adjacent pixel
The gray scale difference value of pixel.
As shown in table 1, Pixel (i, j) represents the pixel that the i-th row jth arranges in display panel, wherein, i and j are just whole
Number.Below to calculate in data-signal the gray scale of the sub-pixel corresponding to adjacent pixel of each sub-pixel in pixel Pixel (i, j)
Illustrated exemplified by difference.
Table 1
| Pixel(i-1,j-1) | Pixel(i-1,j) | Pixel(i-1,j+1) |
| Pixel(i,j-1) | Pixel(i,j) | Pixel(i,j+1) |
| Pixel(i+1,j-1) | Pixel(i+1,j) | Pixel(i+1,j+1) |
Assuming that each pixel includes three red sub-pixel, green sub-pixels and blue subpixels sub-pixels, represent red with 1
Sub-pixels, 2 represent green sub-pixels, and 3 represent blue subpixels.Red sub-pixel pixel in so Pixel (i, j) (i, j,
1), the gray scale of green sub-pixels pixel (i, j, 2) and blue subpixels pixel (i, j, 3) sub-pixels corresponding to adjacent pixel
Difference can represent as follows：
A1=ABS (pixel (i, j, 1)-pixel (i-1, j-1,1))
A2=ABS (pixel (i, j, 1)-pixel (i-1, j, 1))
A3=ABS (pixel (i, j, 1)-pixel (i-1, j+1,1))
A4=ABS (pixel (i, j, 1)-pixel (i, j-1,1))
A5=ABS (pixel (i, j, 1)-pixel (i, j+1,1))
A6=ABS (pixel (i, j, 1)-pixel (i+1, j-1,1))
A7=ABS (pixel (i, j, 1)-pixel (i+1, j, 1))
A8=ABS (pixel (i, j, 1)-pixel (i+1, j+1,1))
A9=ABS (pixel (i, j, 2)-pixel (i-1, j-1,2))
A10=ABS (pixel (i, j, 2)-pixel (i-1, j, 2))
A11=ABS (pixel (i, j, 2)-pixel (i-1, j+1,2))
A12=ABS (pixel (i, j, 2)-pixel (i, j-1,2))
A13=ABS (pixel (i, j, 2)-pixel (i, j+1,2))
A14=ABS (pixel (i, j, 2)-pixel (i+1, j-1,2))
A15=ABS (pixel (i, j, 2)-pixel (i+1, j, 2))
A16=ABS (pixel (i, j, 2)-pixel (i+1, j+1,2))
A17=ABS (pixel (i, j, 3)-pixel (i-1, j-1,3))
A18=ABS (pixel (i, j, 3)-pixel (i-1, j, 3))
A19=ABS (pixel (i, j, 3)-pixel (i-1, j+1,3))
A20=ABS (pixel (i, j, 3)-pixel (i, j-1,3))
A21=ABS (pixel (i, j, 3)-pixel (i, j+1,3))
A22=ABS (pixel (i, j, 3)-pixel (i+1, j-1,3))
A23=ABS (pixel (i, j, 3)-pixel (i+1, j, 3))
A24=ABS (pixel (i, j, 3)-pixel (i+1, j+1,3))
Because the pixel adjacent with pixel Pixel (i, j) has eight, so of gray scale difference value corresponding to each sub-pixel
Several is also eight, and the sub-pixel of three kinds of colors of red, green and blue adds up to 24 gray scale difference values, regard 24 gray scale difference values as this
Gray scale difference value corresponding to pixel Pixel (i, j).
In one embodiment, for the ease of calculating, after 24 gray scale difference values are obtained, it is also necessary to 24 gray scales
The numerical value that difference does normalized so that gray scale difference value is normalized between 0 to 1.It is understood that it can also calculate
The gray value of each sub-pixel is normalized before gray scale difference value, is not particularly limited herein.
Maximum in multiple gray scale difference values corresponding to S1042, the acquisition pixel is as high frequency corresponding to the pixel
The factor.
After multiple gray scale difference values corresponding to each pixel are got, gray scale difference value maximum in each pixel is regard as this
High-frequency factor corresponding to pixel.It is understood that the high-frequency factor is the numerical value between 0 to 1.
It should be noted that in other embodiments, other high-frequency factor computational methods can also be used, does not do have herein
Body limits.
S105, according to the high-frequency factor, the first quasi- drive voltage signal and the generation driving of the second quasi- drive voltage signal
Voltage signal.
Corresponding high-frequency factor, the first quasi- drive voltage signal and the second quasi- drive are being got according to step S103 and S104
, will be according to high-frequency factor, the first quasi- drive voltage signal and the second quasi- drive voltage signal generation driving electricity after dynamic voltage signal
Press signal.
Specifically, in one embodiment, referring to Fig. 7, Fig. 7 is the specific stream of step S105 in driving method shown in Fig. 1
Journey schematic diagram.Step S105 includes step S1051 to S1052.
S1051, the first quasi- drive voltage signal and the second quasi- drive voltage signal adjusted according to the high-frequency factor
Weight factor.
In one embodiment, the first quasi- drive voltage signal and the second quasi- driving electricity are adjusted according to the high-frequency factor
The weight factor of pressure signal includes：The high-frequency factor is arranged to the power of respective pixel in the described first quasi- drive voltage signal
Repeated factor, and using 1 weight with the difference of the high-frequency factor as respective pixel in the described second quasi- drive voltage signal
The factor.
Specifically, high-frequency factor corresponding to pixel Pixel (i, j) is labeled as HF (i, j).By high-frequency factor HF (i, j)
As the weight factor of pixel Pixel (i, j) in the first quasi- drive voltage signal, by (1-HF (i, j)) as the second quasi- driving
Pixel Pixel (i, j) weight factor in voltage signal.
S1052, according to the described first quasi- drive voltage signal, the second quasi- drive voltage signal and its corresponding weight factor
Generate the drive voltage signal.
Calculate in the first quasi- drive voltage signal that the first quasi- drive voltage signal is multiplied by HF corresponding to pixel Pixel (i, j)
The value of (i, j) is A values, and calculates the second quasi- driving voltage corresponding to pixel Pixel (i, j) in the second quasi- drive voltage signal
The value that signal is multiplied by (1-HF (i, j)) is B values, then calculates A values with B values sum as pixel Pixel in drive voltage signal
Driving voltage value corresponding to (i, j).According to the above method, it can calculate in drive voltage signal and be driven corresponding to each pixel
Magnitude of voltage, so as to form the drive voltage signal of entire picture.
S106, according to the drive voltage signal display panel is driven to show the picture.
It is higher that high-frequency factor is can be seen that from the process of above-mentioned steps S105 computing driving voltage signals, driving voltage letter
The composition of the first quasi- drive voltage signal is bigger in number；High-frequency factor is lower, the second quasi- driving voltage letter in drive voltage signal
Number composition it is bigger.First quasi- drive voltage signal and the second standard in drive voltage signal are adjusted according to the high-frequency factor of picture
The weight of drive voltage signal, after driving display panel display picture using the drive voltage signal, can improve picture can
Angle, improve the colour cast problem under big visual angle, prevent the situation of broken string from occurring.
In the present embodiment, the driving method is after the data-signal of picture is got, and obtains corresponding to data-signal the
One drive voltage signal and the second drive voltage signal, driven wherein the first drive voltage signal is higher than benchmark corresponding to data-signal
Dynamic voltage signal, the second drive voltage signal are less than benchmark drive voltage signal；The first drive voltage signal and second are driven again
Dynamic voltage signal generates the first quasi- drive voltage signal and according to the second default create-rule according to the first default create-rule
Generate the second quasi- drive voltage signal；The high-frequency factor according to corresponding to default computation rule calculates each pixel in data-signal,
And drive voltage signal is generated according to high-frequency factor, the first quasi- drive voltage signal and the second quasi- drive voltage signal；Last root
Display panel display picture is driven according to drive voltage signal.This method can improve the visible angle of display device and big visual angle
The contrast of upper picture, improve picture on big visual angle and the problem of colour cast occur, prevent the situation of broken string from occurring.
Referring to Fig. 8, Fig. 8 is the structural representation of drive device in the present embodiment.The drive device 300 can be arranged on
In display device.The drive device 300 can specifically perform any one above-mentioned driving method.Wherein, the display device can example
It is such as liquid crystal display device, OLED display, QLED display devices or other types display device, does not do specific limit herein
System.
The drive device 300 includes signal acquiring unit 310, display searching unit 320, the first generation unit 330, the factor
Computing unit 340, the second generation unit 350 and driver element 360.Below in conjunction with Fig. 8 to the drive device in the present embodiment
300 are described in detail.
(1) signal acquiring unit 310；
Signal acquiring unit 310, for obtaining the data-signal of picture.
For display device in display picture, using showing frame by frame, every width picture is all corresponding with data-signal, signal acquisition list
Member 310 is transferred to display searching unit 320 after the data-signal of a frame picture is received, by the data-signal of the picture.
(2) searching unit 320 is shown；
Searching unit 320 is shown, for obtaining the first drive voltage signal corresponding to the data-signal and the second driving
Voltage signal, wherein first drive voltage signal is higher than benchmark drive voltage signal corresponding to the data-signal, it is described
Second drive voltage signal is less than the benchmark drive voltage signal.
In one embodiment, the display searching unit 320 is RAM memory.Specifically, the display searching unit 320 is
Memory in display device internal controller.After electricity in display device, display look-up table that controller will first store in ROM
(Look-Up-Table, abbreviation LUT) is read in display searching unit 320.
The corresponding relation of data-signal and driving voltage is stored with the display look-up table.Therefore, searching unit is shown
320 can be by showing that look-up table obtains the first drive voltage signal and the second drive voltage signal corresponding to data-signal.
In the present embodiment, first drive voltage signal is higher than benchmark drive voltage signal corresponding to the data-signal,
Second drive voltage signal is less than the benchmark drive voltage signal.Wherein, the benchmark drive voltage signal refers to not to data
When driving voltage corresponding to signal carries out voltage-regulation, the driving voltage corresponding to data-signal.That is, according to routine
Corresponding relation between gray value and driving voltage value find each sub-pixel in data-signal gray value it is corresponding driving
Magnitude of voltage, driving voltage value corresponding to the sub-pixel of entire picture form benchmark drive voltage signal.
In one embodiment, the first display look-up table and the second display look-up table are stored with the display searching unit 320.
The first display look-up table is used for the corresponding relation of gray value and the first driving voltage value in memory data signal.Second display
Look-up table is used for the corresponding relation of gray value and the second driving voltage value in memory data signal.Display searching unit 320 passes through
The first display look-up table obtains the first drive voltage signal corresponding to the data-signal, and passes through the second display look-up table
Obtain the second drive voltage signal corresponding to the data-signal.
In other embodiments, the number of the display searching unit 320 is two, one of display searching unit 320
For storing the first display look-up table, another display searching unit 320 is used to store the second display look-up table.The display is searched
The number of table 320 can also be more, herein not to showing that the number of searching unit 320 is limited.
(3) first generation units 330；
First generation unit 330, for by first drive voltage signal and second drive voltage signal according to
First default create-rule generates the first quasi- drive voltage signal and driven according to the second default create-rule generation second is accurate
Voltage signal.
In one embodiment, first generation unit 330 includes the first generation generation subelement of subelement 331 and second
332。
(31) first generation subelements 331；
First generation subelement 331, for will first drive voltage signal and the second drive voltage signal according to institute
The mode that pixel corresponding to stating pixel corresponding to the first drive voltage signal and second drive voltage signal is alternately arranged is given birth to
Into the described first quasi- drive voltage signal.
In one embodiment, be specifically used for will first drive voltage signal and for the first generation subelement 331
Two drive voltage signals according between pixel corresponding to two neighboring first drive voltage signal be provided with one described second
One is provided between pixel corresponding to pixel corresponding to drive voltage signal and two neighboring second drive voltage signal
The mode being alternately arranged of pixel generates the described first quasi- drive voltage signal corresponding to first drive voltage signal.
That is, the first quasi- drive voltage signal that the first generation subelement 331 generates is believed for the first driving voltage
Number and the second drive voltage signal combination.In the first quasi- drive voltage signal pixel corresponding to the first drive voltage signal and
Pixel corresponding to second drive voltage signal is alternately arranged.
(32) second generation subelements 332；
Second generation subelement 332, for will first drive voltage signal and the second drive voltage signal according to institute
The side that sub-pixel corresponding to stating sub-pixel corresponding to the first drive voltage signal and second drive voltage signal is alternately arranged
Formula generates the second quasi- drive voltage signal.
In one embodiment, be specifically used for will first drive voltage signal and for the second generation subelement 332
Two drive voltage signals are according to being provided with one described the between sub-pixel corresponding to two neighboring first drive voltage signal
Set between sub-pixel corresponding to sub-pixel corresponding to two drive voltage signals and two neighboring second drive voltage signal
The mode being alternately arranged for having sub-pixel corresponding to first drive voltage signal generates the described second quasi- driving voltage
Signal.
That is, the second quasi- drive voltage signal that the second generation subelement 332 generates also is the first driving voltage
The combination of signal and the second drive voltage signal.Sub- picture corresponding to first drive voltage signal in the second quasi- drive voltage signal
Sub-pixel corresponding to element and the second drive voltage signal is alternately arranged.
(4) factor calculating unit 340；
Factor calculating unit 340, corresponding to calculating each pixel in the data-signal according to default computation rule
High-frequency factor.
In the present embodiment, the high-frequency factor is used to characterize picture brightness intensity of variation.The higher theory of value of the high-frequency factor
The brightness of bright picture changes greatly, and is high frequency picture.Correspondingly, the brightness of the smaller explanation picture of the value of the high-frequency factor changes not
Substantially, it is low frequency picture.
In one embodiment, the factor calculating unit 340 includes computation subunit 341 and obtains subelement 342.
(41) computation subunit 341；
Computation subunit 341, for calculate each sub-pixel in the data-signal in each pixel with it is adjacent
The gray scale difference value of corresponding sub-pixel in pixel；
Computation subunit 341 specifically calculates in each pixel corresponding sub-pixel in eight pixels of each sub-pixel and surrounding
The absolute value of the difference of gray value.Assuming that each pixel includes three red sub-pixel, green sub-pixels and blue subpixels pictures
Element, then the number that computation subunit 341 calculates gray scale difference value corresponding to each pixel is 24.
In one embodiment, for the ease of calculating, computation subunit 341 is calculating 24 gray scales corresponding to each pixel
After difference, it is also necessary to the number for doing normalized to 24 gray scale difference values so that gray scale difference value is normalized between 0 to 1
Value.It is understood that computation subunit 341 can also be carried out before gray scale difference value is calculated to the gray value of each sub-pixel
Normalized, it is not particularly limited herein.
(42) subelement 342 is obtained
Subelement 342 is obtained, for obtaining the maximum in multiple gray scale difference values corresponding to the pixel as the picture
High-frequency factor corresponding to element.
Subelement 342 is obtained after multiple gray scale difference values corresponding to each pixel of the transmission of computation subunit 341 are received,
Gray scale difference value maximum in each pixel will be obtained as high-frequency factor corresponding to the pixel.It is understood that the high frequency because
Son is the numerical value between 0 to 1.
(5) second generation units 350；
Second generation unit 350, for according to the quasi- driving electricity of the high-frequency factor, the first quasi- drive voltage signal and second
Press signal generation drive voltage signal.
In one embodiment, second generation unit 350 includes the adjustment generation subelement 352 of subelement 351 and the 3rd.
(51) subelement 351 is adjusted；
Subelement 351 is adjusted, for adjusting the first quasi- drive voltage signal and the second standard according to the high-frequency factor
The weight factor of drive voltage signal.
In one embodiment, subelement 351 is adjusted to be specifically used for the high-frequency factor being arranged to the described first quasi- driving
The weight factor of respective pixel in voltage signal, and it is electric as the described second quasi- driving with the difference of the high-frequency factor using 1
Press the weight factor of respective pixel in signal.
Specifically, because each pixel corresponds to a high-frequency factor, by high-frequency factor corresponding to pixel Pixel (i, j)
Labeled as HF (i, j).Adjust subelement 351 and the first quasi- drive voltage signal and the second standard are adjusted according to the high-frequency factor
The weight factor of drive voltage signal is specially：Using high-frequency factor HF (i, j) as pixel in the first quasi- drive voltage signal
Pixel (i, j) weight factor, (1-HF (i, j)) is used as to the power of pixel Pixel (i, j) in the second quasi- drive voltage signal
Repeated factor.
(52) the 3rd generation subelements 352；
3rd generation subelement 352, for according to the described first quasi- drive voltage signal, the second quasi- drive voltage signal and
Its corresponding weight factor generates the drive voltage signal
Specifically, the 3rd generation subelement 352 is calculated in the first quasi- drive voltage signal corresponding to pixel Pixel (i, j)
The value that first quasi- drive voltage signal is multiplied by HF (i, j) is A values, and calculates pixel Pixel in the second quasi- drive voltage signal
The value that second quasi- drive voltage signal corresponding to (i, j) is multiplied by (1-HF (i, j)) is B values, then calculate A values and B values sum as
Driving voltage value corresponding to pixel Pixel (i, j) in drive voltage signal.3rd generation subelement 352 calculates drive successively
Driving voltage value corresponding to each pixel in dynamic voltage signal, so as to form the drive voltage signal of entire picture.
(6) driver element 360；
Driver element 360, for driving the display panel to show the picture according to the drive voltage signal.
After the second generation unit 350 generates drive voltage signal, drive voltage signal is transferred to driver element 360,
The driver element 360 drives display panel display picture according to the drive voltage signal.
It is apparent to those skilled in the art that for convenience of description and succinctly, the drive of foregoing description
The specific work process of dynamic device 300 and unit, may be referred to the corresponding process in foregoing driving method embodiment, herein
Repeat no more.
In addition, each functional unit can be integrated in a controller or each in apparatus of the present invention embodiment
Individual unit is individually physically present or two or more units are integrated in a unit.Above-mentioned integrated unit
Both it can be realized, can also be realized in the form of SFU software functional unit in the form of hardware.
In the present embodiment, the drive device 300 shows after signal acquiring unit 310 gets the data-signal of picture
Show that searching unit 320 obtains the first drive voltage signal and the second drive voltage signal corresponding to data-signal；Again by the first life
First drive voltage signal and the second drive voltage signal are driven according to the first default create-rule generation first is accurate into unit 330
Move voltage signal and generate the second quasi- drive voltage signal according to the second default create-rule；The basis of factor calculating unit 340
Default computation rule calculates high-frequency factor corresponding to each pixel in data-signal, and by the second generation unit 350 according to high frequency
The factor, the first quasi- drive voltage signal and the second quasi- drive voltage signal generation drive voltage signal；Finally by driver element 360
Display panel display picture is driven according to drive voltage signal.The drive device 300 can improve the visible angle of display device
And on big visual angle picture contrast, improve picture on big visual angle and the problem of colour cast occur, prevent the situation of broken string from occurring.
Referring to Fig. 9, Fig. 9 is the structural representation of display device in the embodiment of the present invention.The display device 400 can be
Liquid crystal display panel, OLED display panel, QLED display panels or other types display panel, are not particularly limited herein.
The display device 400 includes display panel 410 and drive device 420.The display panel 410 is used for display picture.
The drive device 420 is connected with display panel 410, for driving the display picture of display panel 410.
Specifically, in the present embodiment, the drive device 420 can be any one drive device provided by the invention,
The drive device 420 can perform any one driving method provided by the invention to drive the display picture of display panel 410.Should
Drive device 420 specifically drives the principle of the display picture of display panel 410 and process to refer to driving method reality in this specification
Apply example and drive device embodiment.Due to before this specification several embodiments to driving method provided by the invention with
And drive device is introduced in detail, for the terseness of specification, will not be repeated here.
Display device 400 in the present embodiment, it includes display panel 410 and drive device 420, due to the drive device
420 can perform any one driving method provided by the invention to drive the display picture of display panel 410 so that the display fills
Put 400 visible angle and big visual angle on the contrast of picture greatly improve, while there is asking for colour cast in picture on big visual angle
Topic is also improved well.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, various equivalent modifications can be readily occurred in or replaced
Change, these modifications or substitutions should be all included within the scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection domain be defined.
Claims (10)
- A kind of 1. drive device, it is characterised in that including：Signal acquiring unit, for obtaining the data-signal of picture；Searching unit is shown, for by showing that look-up table obtains the first drive voltage signal corresponding to the data-signal and the Two drive voltage signals, believe wherein first drive voltage signal is higher than benchmark driving voltage corresponding to the data-signal Number, second drive voltage signal is less than the benchmark drive voltage signal；First generation subelement, for first drive voltage signal and the second drive voltage signal to be driven according to described first The mode that pixel corresponding to pixel corresponding to dynamic voltage signal and second drive voltage signal is alternately arranged generates described the Surely drive voltage signal；Second generation subelement, for first drive voltage signal and the second drive voltage signal to be driven according to described first The mode that sub-pixel corresponding to sub-pixel corresponding to dynamic voltage signal and second drive voltage signal is alternately arranged generates institute State the second quasi- drive voltage signal；Factor calculating unit, for high frequency corresponding to calculating each pixel in the data-signal according to default computation rule because Son；Second generation unit, for according to the high-frequency factor, the first quasi- drive voltage signal and the second quasi- drive voltage signal Generate drive voltage signal；Driver element, for driving the display panel to show the picture according to the drive voltage signal.
- A kind of 2. drive device, it is characterised in that including：Signal acquiring unit, for obtaining the data-signal of picture；Searching unit is shown, for obtaining the first drive voltage signal corresponding to the data-signal and the second driving voltage letter Number, wherein first drive voltage signal is higher than benchmark drive voltage signal corresponding to the data-signal, described second drives Dynamic voltage signal is less than the benchmark drive voltage signal；First generation unit, for first drive voltage signal and second drive voltage signal to be preset according to first Create-rule generates the first quasi- drive voltage signal and generates the second quasi- drive voltage signal according to the second default create-rule；Factor calculating unit, for high frequency corresponding to calculating each pixel in the data-signal according to default computation rule because Son；Second generation unit, for according to the high-frequency factor, the first quasi- drive voltage signal and the second quasi- drive voltage signal Generate drive voltage signal；Driver element, for driving the display panel to show the picture according to the drive voltage signal.
- 3. drive device according to claim 2, it is characterised in that the display searching unit is specifically used for passing through first Show that look-up table obtains the first drive voltage signal corresponding to the data-signal；And institute is obtained by the second display look-up table State the second drive voltage signal corresponding to data-signal.
- 4. drive device according to claim 2, it is characterised in that first generation unit includes：First generation subelement, for first drive voltage signal and the second drive voltage signal to be driven according to described first The mode that pixel corresponding to pixel corresponding to dynamic voltage signal and second drive voltage signal is alternately arranged generates described the Surely drive voltage signal；Second generation subelement, for first drive voltage signal and the second drive voltage signal to be driven according to described first The mode that sub-pixel corresponding to sub-pixel corresponding to dynamic voltage signal and second drive voltage signal is alternately arranged generates institute State the second quasi- drive voltage signal.
- 5. drive device according to claim 2, it is characterised in that the factor calculating unit includes：Computation subunit, for calculating each sub-pixel in the data-signal in each pixel and phase in adjacent pixel Answer the gray scale difference value of sub-pixel；Subelement is obtained, for obtaining the maximum in multiple gray scale difference values corresponding to the pixel as corresponding to the pixel High-frequency factor.
- 6. drive device according to claim 2, it is characterised in that second generation unit includes：Subelement is adjusted, for adjusting the first quasi- drive voltage signal and the second quasi- driving voltage according to the high-frequency factor The weight factor of signal；3rd generation subelement, for according to the described first quasi- drive voltage signal, the second quasi- drive voltage signal and its corresponding Weight factor generate the drive voltage signal.
- 7. drive device according to claim 4, it is characterised in that the first generation subelement is specifically used for by described in First drive voltage signal and the second drive voltage signal are according to the corresponding pixel of two neighboring first drive voltage signal Between be provided with pixel and two neighboring second drive voltage signal pair corresponding to second drive voltage signal The mode being alternately arranged that pixel corresponding to first drive voltage signal is provided between the pixel answered generates described the Surely drive voltage signal.
- 8. drive device according to claim 4, it is characterised in that the second generation subelement is specifically used for by described in First drive voltage signal and the second drive voltage signal are according to the corresponding sub- picture of two neighboring first drive voltage signal Sub-pixel corresponding to second drive voltage signal and the two neighboring second driving voltage letter are provided between element The mode being alternately arranged for being provided with sub-pixel corresponding to first drive voltage signal between sub-pixel corresponding to number is given birth to Into the described second quasi- drive voltage signal.
- 9. drive device according to claim 6, it is characterised in that the adjustment subelement is specifically used for the high frequency The factor is arranged to the weight factor of respective pixel in the described first quasi- drive voltage signal, and by 1 and the high-frequency factor Weight factor of the difference as respective pixel in the described second quasi- drive voltage signal.
- A kind of 10. display device, it is characterised in that including：Display panel；Drive device, it is connected with the display panel, for driving the display panel display picture；Wherein, the drive device is any one drive device in claim 2 to 9.
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| US20110187632A1 (en) * | 2010-02-04 | 2011-08-04 | Yi-Pai Huang | Color adjustment method for color sequential liquid crystal display |
| CN105529011A (en) * | 2016-02-18 | 2016-04-27 | 京东方科技集团股份有限公司 | Display device, display panel and driving method |
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