CN109658900A - Driving method, compensation circuit and driving device, the display device of display panel - Google Patents
Driving method, compensation circuit and driving device, the display device of display panel Download PDFInfo
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- CN109658900A CN109658900A CN201910153427.8A CN201910153427A CN109658900A CN 109658900 A CN109658900 A CN 109658900A CN 201910153427 A CN201910153427 A CN 201910153427A CN 109658900 A CN109658900 A CN 109658900A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Abstract
The embodiment of the invention provides a kind of driving method of display panel, compensation circuit and driving devices, display device.Due to this method can pixel at least one display area into the first display area and the second display area, export the data-signal generated based on the corresponding compensation grayscale of initial grayscale.Therefore the absolute value of the luminance difference of two display areas can be made to be less than or equal to difference threshold, i.e., so that the display brightness difference of two display areas is smaller.The display homogeneity of the display panel is preferable.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of driving method of display panel, compensation circuit and driving
Device, display device.
Background technique
Liquid crystal display (liquid crystal display, LCD) panel because its high resolution, light-weight, low energy consumption and
The advantages that Low emissivity, is widely used in display field, for example, in the field virtual reality (virtual reality, VR).And
And with the development of display technology, before the display effect to the human eye watching area in display panel proposes high requirement
It puts, high requirement also proposed to the refresh rate of display panel.
In the related technology, in order to improve the brush of display panel under the premise of the display effect in guarantor's eye fixation region
New rate.Pixel included by predetermined human eye watching area is line by line in being controlled the display panel by gate driving circuit
It opens, and pixel multirow included by the region in controlling the display panel in addition to human eye watching area while opening.To that is,
It can reduce the sweep time of every frame picture under the premise of the display effect in guarantor's eye fixation region, improve display panel
Refresh rate.
But since in above-mentioned driving method, source electrode drive circuit can be during gate driving circuit be scanned, to people
The pixel that eye fixation region includes outputting data signals one by one, and to pixel included by the region in addition to human eye watching area
In multiple pixels simultaneously outputting data signals, it is thus possible to cause in the same time, to each of the people's eye fixation region
The data voltage that pixel is filled with, with the data voltage being filled with to each pixel in the region in addition to human eye watching area
Difference, and then human eye watching area and the display brightness in the region in addition to human eye watching area is caused to have differences, display surface
The display homogeneity of plate is poor.
Summary of the invention
The present invention provides a kind of driving method of display panel, compensation circuit and driving devices, display device, can solve
The certainly poor problem of the display homogeneity of display panel in the related technology, the technical solution is as follows:
On the one hand, a kind of driving method of display panel is provided, optionally, which comprises
Determine the first display area and the second display area, the multirow pixel that first display area includes is opened line by line
It opens, at least two row pixels while being opened in the multirow pixel that second display area includes；
According to the first initial grayscale of pixel in first display area, the pixel of the first display area Xiang Suoshu is exported
First data-signal；
According to the second initial grayscale of pixel in second display area, the pixel of the second display area Xiang Suoshu is exported
Second data-signal；
Wherein, at least one of first data-signal and second data-signal are based on its pixel exported
Compensation grayscale corresponding to initial grayscale generates, also, makes described first to show based on the data-signal that the compensation grayscale generates
Show that the absolute value of the luminance difference of the brightness in region and the brightness of second display area is less than or equal to difference threshold.
Optionally, first display area is that the human eye determined according to the blinkpunkt of human eye on said display panel is infused
Viewed area, second display area are the region in addition to the human eye watching area.
Optionally, first display area is to be set on the display panel for showing first resolution image
Region, second display area are to be set on the display panel for showing the region of second resolution image, and institute
First resolution is stated greater than the second resolution.
Optionally, first data-signal is based on the described first initial grayscale generation；
Second data-signal is based on the described second initial grayscale corresponding second and compensates grayscale generation.
Optionally, compensation grayscale corresponding to the initial grayscale is true according to the corresponding relationship of initial grayscale and compensation grayscale
It is fixed, before exporting the first data-signal to the pixel of first display area, the method also includes:
Determine the first test zone and the second test zone, the multirow pixel that first test zone includes is opened line by line
It opens, at least two row pixels while being opened in the multirow pixel that second test zone includes；
To the pixel of first test zone and the pixel of second test zone, output is initially grey based on third
The third data-signal that rank generates；
In the exhausted of the brightness for detecting first test zone and the luminance difference of the brightness of second test zone
To value be greater than the difference threshold when, adjust targeted test region in pixel the initial grayscale of third, and based on adjusting after
The initial grayscale of third updates corresponding data-signal, until the brightness of first test zone and second test zone
The absolute value of the luminance difference of brightness is less than or equal to the difference threshold, and the targeted test region is first test section
At least one of domain and second test zone；
Grayscale is compensated using the initial grayscale of the third after adjusting as the corresponding third of the initial grayscale of the third, and according to institute
The initial grayscale of third and third compensation grayscale are stated, the corresponding relationship of the initial grayscale and compensation grayscale is generated.
Optionally, the targeted test region is second test zone, described to adjust in the targeted test region
Pixel the initial grayscale of third, comprising:
When the display brightness for detecting first test zone is greater than the display brightness of second test zone, increase
The initial grayscale of third of pixel in big second test zone；
When the display brightness for detecting first test zone is less than the display brightness of second test zone, subtract
The initial grayscale of third of pixel in small second test zone.
Optionally, the difference threshold is 0.
On the other hand, a kind of compensation circuit of display panel is provided, the compensation circuit is used for:
Determine the first display area and the second display area, the multirow pixel that first display area includes is opened line by line
It opens, at least two row pixels while being opened in the multirow pixel that second display area includes；
According to the first initial grayscale of pixel in first display area, the pixel of the first display area Xiang Suoshu is exported
First data-signal；
According to the second initial grayscale of pixel in second display area, the pixel of the second display area Xiang Suoshu is exported
Second data-signal；
Wherein, in first data-signal and second data-signal, at least one data-signal is based on its output
Pixel initial grayscale corresponding to compensation grayscale generate, also, based on it is described compensation grayscale generate data-signal make institute
The absolute value for stating the luminance difference of the brightness of the first display area and the brightness of second display area is less than or equal to difference
Threshold value.
Another aspect, provides a kind of driving device of display panel, and the driving device includes: processor and memory
And it is stored in the computer program on the memory, the processor is realized when executing the computer program as in terms of above-mentioned
The driving method of the display panel；The compensation circuit of display panel is integrated in the driving device of the display panel.
In another aspect, provide a kind of display device, the display device includes: the compensation circuit as described in terms of above-mentioned
Or the driving device as described in terms of above-mentioned.
Technical solution bring beneficial effect provided by the invention at least may include:
The embodiment of the invention provides a kind of driving method of display panel, compensation circuit and driving devices, display device.
Due to this method can pixel at least one display area into the first display area and the second display area, export base
In the data-signal that the corresponding compensation grayscale of initial grayscale generates.Therefore it can make the exhausted of the luminance difference of two display areas
Difference threshold is less than or equal to value, i.e., so that the display brightness difference of two display areas is smaller.The display of the display panel
Homogeneity is preferable.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the timing diagram of each signal end in a kind of driving device provided in an embodiment of the present invention；
Fig. 2 is a kind of pixel charging schematic diagram of human eye watching area provided in an embodiment of the present invention；
Fig. 3 is a kind of pixel charging schematic diagram in inhuman eye fixation region provided in an embodiment of the present invention；
Fig. 4 is the data-signal signal in a kind of human eye watching area provided in an embodiment of the present invention and inhuman eye fixation region
Figure；
Fig. 5 be it is provided in an embodiment of the present invention it is a kind of in the same time, the data of the capacitor write-in of Xiang Butong capacitance
The schematic diagram of signal；
Fig. 6 is a kind of driving method flow chart of display panel provided in an embodiment of the present invention；
Fig. 7 is that the data-signal in another human eye watching area provided in an embodiment of the present invention and inhuman eye fixation region shows
It is intended to；
Fig. 8 is the driving method flow chart of another display panel provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is implemented below in conjunction with attached drawing
Mode is described in further detail.
The embodiment of the invention provides a kind of driving device of display panel, which can be tracked using eye movement
(eye-tracking) movement of technology tracking human eye, determines the blinkpunkt of human eye on a display panel, and then determine people
Eye fixation region.Also, the driving device can also be opened line by line by pixel included by control human eye watching area, and
It is opened simultaneously by controlling pixel multirow included by the region in addition to human eye watching area, Lai Tigao refresh rate.Optionally,
The driving device may include display driving integrated circuit (display driver integrated circuit, DDIC), should
DDIC may include source electrode drive circuit and gate driving circuit.
Exemplary, the gate driving circuit in the DDIC can control included by the region in addition to human eye watching area
Every four row of pixel is opened simultaneously.Correspondingly, the DDIC may include four gate driving circuits, each gate driving with reference to Fig. 1
Circuit can be connect with an open signal end, i.e., the driving device may include four open signal ends (STVL1, STVR1,
STVL2 and STVR2).Also, each gate driving circuit can also be connect with two clock signal terminals respectively, and each grid drives
Dynamic circuit can provide gate drive signal under the driving of open signal end and clock signal terminal for pixel.With reference to Fig. 1,
When being driven to the pixel in human eye watching area L1, each clock signal terminal can be sequentially output in effective current potential when
Clock signal, and then gate driving circuit can be to pixel included by human eye watching area L1, output is in effectively electricity line by line
The clock signal (i.e. gate drive signal) of position, so that pixel included by the people's eye fixation region L1 be driven to open line by line.?
When driving the regional work in addition to human eye watching area L1, every four clock signal terminals can be exported simultaneously in effective current potential
Clock signal, and then gate driving circuit can be to pixel included by the region in addition to human eye watching area L1, often
Four row pixels export the clock signal for being in effective current potential simultaneously, that is, the region in addition to human eye watching area L1 is driven to be wrapped
It four row of pixel that includes while opening.
Optionally, with reference to Fig. 2, the source electrode drive circuit (being not shown in Fig. 2) in the DDIC can pass through source electrode buffer
01 connect with each column pixel in display panel respectively.As shown in Fig. 2, each pixel 02 may include: thin film transistor (TFT) M1,
The pixel electrode (being not shown in Fig. 2) that connect with thin film transistor (TFT) M1, public electrode Vcom and it is located at pixel electrode and public affairs
Liquid crystal molecule between common electrode.With reference to Fig. 2, the pixel electrode and public electrode Vcom can be equivalent to a liquid crystal capacitance
C1, and a storage capacitance C2 can be formed between the pixel electrode and the cabling of public electrode Vcom.
The grid of thin film transistor (TFT) M1 can be connect with grid line G1, and first can extremely connect with data line D1.The data
The equivalent resistance of cabling between line D1 and the first pole of thin film transistor (TFT) M1 can be R1, can between the cabling and public electrode
To form capacitor C3.The second of thin film transistor (TFT) M1 can extremely connect with pixel electrode.Source electrode drive circuit in DDIC can
To be connect by source electrode buffer 01 with data line D1, the gate driving circuit in DDIC can be connect with grid line G1.Work as grid
When driving circuit is in the grid signal of effective current potential to grid line G1 output, source electrode drive circuit can be incited somebody to action by data line D1
Data-signal is exported to pixel electrode, so that liquid crystal molecule is driven to deflect, pixel light emission.
For human eye watching area, when the pixel for including by the gate driving circuit control human eye watching area in DDIC
When opening line by line, with reference to Fig. 2, a column picture that the source electrode drive circuit in DDIC can be connected by from data line D1 to the data line
Plain outputting data signals one by one.And for the region in addition to human eye watching area, when control is in addition to human eye watching area
The every four rows pixel in region (such as four row pixels being separately connected with grid line G1, G2, G3 and G4 shown in Fig. 3) while when opening.
With reference to Fig. 3, the source electrode drive circuit in DDIC passes through data line D1 into the column pixel that the data line connects, every four pixels
Outputting data signals simultaneously.
With reference to Fig. 4, when the data that the source electrode drive circuit in DDIC is exported into two regions positioned at the pixel of same row
When the amplitude of signal is identical, the principle increased according to capacitor series electrical capacitance is it is found that in the same time, the source electrode in DDIC drives
Voltage difference of the dynamic circuit to the data-signal for being located at two regions and being written positioned at each pixel of same row.And capacitance
Bigger, the voltage for the data-signal being written in the same time to pixel is smaller, correspondingly, the light emission luminance of pixel is smaller.By
It is different with the display brightness in the region in addition to human eye watching area that this results in human eye watching area.
For example, it illustrates the data-signals that the source electrode drive circuit in DDIC is exported to same row pixel with reference to Fig. 5
Amplitude it is identical when, Xiang Butong capacitance two capacitors C10 and C20 output data-signal V diagram, abscissa
Time T is represented, ordinate represents the voltage value U of data-signal.With reference to Fig. 5 as can be seen that if to being located at same row and being located at not
When identical with the amplitude of data-signal of the pixel in region write-in, in same time t1, write to the biggish capacitor C10 of capacitance
The voltage U2 of the data-signal entered, less than the voltage U1 for the data-signal being written to the biggish capacitor C20 of capacitance.
The embodiment of the invention provides a kind of driving methods of display panel, can be applied to the driving dress of display panel
Set, the driving device can by adjust grayscale, come adjust the output to pixel data-signal amplitude, i.e., adjusting data-signal
Voltage, can improve that the display brightness in human eye watching area and the region in addition to human eye watching area has differences asks
Topic.
Fig. 6 is a kind of driving method flow chart of display panel provided in an embodiment of the present invention.As shown in fig. 6, this method
May include:
Step 601 determines the first display area and the second display area.
Wherein, the multirow pixel which includes can open line by line, which includes more
At least two row pixels are opened simultaneously in row pixel.
Step 602, the first initial grayscale according to pixel in the first display area, the pixel to first display area are defeated
First data-signal out.
In embodiments of the present invention, each frame image to be shown for display panel, driving device is available to be arrived
When showing the image, the first initial grayscale of each pixel in the first display area.Further, driving device can
According to the get first initial grayscale, generate the first data-signal, and in display panel the first display area pixel by
During row is opened, which is exported into the first display area corresponding pixel, to drive the pixel to send out
Light.
Step 603, the second initial grayscale according to pixel in the second display area are exported to the pixel of the second display area
Second data-signal.
Similarly, each frame image to be shown for display panel, driving device also it is available to show the image when,
Second initial grayscale of each pixel in the second display area.Further, driving device can also be according to getting
Second initial grayscale generates the second data-signal, and in display panel in the pixel opening process of the second display area, by this
Second data-signal exports into the second display area corresponding pixel, to drive the pixel light emission.
It should be noted that in embodiments of the present invention, in first data-signal and the second data-signal, at least one
The corresponding compensation grayscale of initial grayscale that data-signal can be pixel of the driving device based on its output generates.It that is to say, it should
In first data-signal and the second data-signal, at least one data-signal can be driving device and the first of the pixel be determined
After beginning grayscale, then after determining its corresponding compensation grayscale, generated according to the compensation grayscale.Also, it is generated based on compensation grayscale
Data-signal the brightness of the first display area and the absolute value of the luminance difference of the brightness of the second display area can be made to be less than
Or it is equal to difference threshold.
It is exemplary, it is assumed that driving device determines that the display brightness of the second display area less than the first display area, then drives
Device can increase the electricity of the data-signal of the write-in of the pixel into the second display area by increasing the second initial grayscale
Pressure.So that in the same time, the voltage of the data-signal to two display areas and positioned at the pixel of same row is written
Difference is smaller or even identical.
For example, Fig. 7 is provided in an embodiment of the present invention a kind of raw according to the corresponding second compensation grayscale of the second initial grayscale
At the second data-signal schematic diagram.Comparison diagram 4 and Fig. 7 can be seen that in embodiments of the present invention, and driving device is according to tune
The amplitude for the second data-signal that the second compensation grayscale after section is exported to the second display area, is greater than defeated to the first display area
The amplitude of the first data-signal out.And then it ensure that in the same time, the number of the pixel write-in into two display areas
It is believed that number voltage can be identical, guarantee the display brightness homogeneity of two display areas.
In conclusion the embodiment of the invention provides a kind of driving methods of display panel.Since this method can be to
The pixel at least one display area in one display area and the second display area, output are based on the corresponding benefit of initial grayscale
Repay the data-signal of grayscale generation.Therefore the absolute value of the luminance difference of two display areas can be made to be less than or equal to difference
Threshold value, i.e., so that the display brightness difference of two display areas is smaller.The display homogeneity of the display panel is preferable.
As a kind of optional implementation, first display area can according to human eye watching attentively on a display panel
The determining human eye watching area of point, second display area can be the region in addition to human eye watching area.
It that is to say, in embodiments of the present invention, driving device can pass through eye-tracking technology real-time detection human eye
Blinkpunkt in display panel, and can will be located at around the blinkpunkt according to determining blinkpunkt, and including the blinkpunkt
Default line number pixel where region be determined as the first display area (i.e. human eye watching area), and can will show except first
Show that the region except region is determined as the second display area (region i.e. in addition to human eye watching area).Wherein, the default row
Number can be pre-configured in driving device.
It is exemplary, it is assumed that the default line number is 301 rows, then driving device can be determined by eye-tracking technology
After human eye fixation point, the region where any 301 row pixel including the human eye fixation point is determined as the first display area,
For example, the determining corresponding pixel of blinkpunkt can be expert at, and pixel corresponding with the blinkpunkt be expert at it is adjacent
The region where each 150 row pixel is determined as the first display area up and down.Correspondingly, driving device can will remove 301 row
The region where pixel except pixel is determined as the second display area.Since the blinkpunkt of human eye on a display panel may
It constantly changes, therefore by eye-tracking technology come the real-time human eye watching area and inhuman determined in display panel
The flexibility and reliability of determining human eye watching area can be improved in eye fixation region.
As another optional implementation, which can be with preset for showing on display panel
Show the region of first resolution image, which can be preset for showing second on the display panel
The region of image in different resolution.And the first resolution can be greater than second resolution.That is first display area and the second display
It region all can be preset fixed area on display panel.
It is opened line by line since the gate driving circuit in DDIC can control pixel included by first display area, and
It can control pixel multirow included by second display area while opening.Therefore the image that first display area is shown
Resolution ratio is higher, and the resolution ratio for the image that the second display area is shown is higher.
It is exemplary, it is assumed that display panel includes 1600 row pixels altogether, then where the 500th row pixel to the 1000th row pixel
Region can be the first display area.1st row pixel is to the 499th row pixel and the 1001st row pixel to the 1600th row pixel
The region at place can be the second display area.
Optionally, which can be generated based on the first initial grayscale.Second data-signal can be based on
Second initial grayscale corresponding second compensates grayscale and generates.
It that is to say, for the first display area, driving device can be based on each picture in the first display area got
Element the first initial grayscale, directly generate corresponding first data-signal, and in display panel the first display area pixel
In opening process, the first data-signal of generation is exported to corresponding pixel.For the second display area, driving device can be with
In the second display area got after the second initial grayscale of each pixel, the second initial grayscale corresponding is first determined
Then two compensation grayscale generate corresponding second data-signal based on the second compensation grayscale again, finally the in display panel
In the pixel opening process of two display areas, the second data-signal of generation is exported to corresponding pixel.I.e. driving device can
Only to adjust the display brightness of the second display area, keep it close with the brightness of the first display area.
Compensated the is exported to the second display area by being based only upon the corresponding second compensation grayscale of the second initial grayscale
Two data-signals, can be constant in the brightness for ensuring the first display area (i.e. human eye watching area), guarantor's eye fixation region
Under the premise of display effect, improve the display homogeneity of display panel.In addition, since driving device only has adjusted for generating the
The initial grayscale of the second of two data-signals, therefore the calculation amount of driving device is also reduced, reduce the power consumption of driving device.
Optionally, which can be generated based on the corresponding first compensation grayscale of the first initial grayscale, this
Two data-signals can be generated based on the second initial grayscale.It that is to say, driving device can also be adjusted only for generating the first number
It is believed that number the first initial grayscale, i.e., only adjust the display brightness of the first display area.
It is generated alternatively, first data-signal can compensate grayscale based on the first initial grayscale corresponding first, this second
Data-signal can also compensate grayscale based on the second initial grayscale corresponding second and generate.It that is to say, driving device can be simultaneously
Adjust for generating the first initial grayscale of the first data-signal, and adjust for generating the second data-signal second initially
Grayscale adjusts the display brightness of two display areas simultaneously.The embodiment of the present invention does not limit the adjusting method of driving device
It is fixed.
In embodiments of the present invention, compensation grayscale corresponding to initial grayscale can be according to initial grayscale and compensation grayscale
Corresponding relationship determines.The corresponding relationship can be pre-stored in driving device, and in the corresponding relationship record have it is each just
The corresponding compensation grayscale of beginning grayscale.For example, driving device can store the initial grayscale in the form of a list and compensate grayscale
Corresponding relationship can store initial grayscale and compensate the corresponding relationship look-up table of grayscale in the driving device.Correspondingly, driving
Dynamic device is after determining the initial grayscale of some pixel, it can directly determines from the corresponding relationship and the initial grayscale
Corresponding compensation grayscale.
Fig. 8 is a kind of process of method for generating initial grayscale and compensating grayscale corresponding relationship provided in an embodiment of the present invention
Figure, this method can be applied in the driving device of display panel.As shown in figure 8, before executing above-mentioned steps 601, the party
Method can also include:
Step 801 determines the first test zone and the second test zone.
Wherein, the multirow pixel which includes can open line by line, which includes more
At least two row pixels can open simultaneously in row pixel.Optionally, which is referred to as human eye watching area,
Second test zone is referred to as non-watching area.
In embodiments of the present invention, display panel can be tested before display device is dispatched from the factory, to determine so that the
When one test zone and the absolute value of the luminance difference of the second test are less than or equal to difference threshold, the corresponding compensation of initial grayscale
Grayscale.Before test, it needs first to determine the first test zone and the second test zone on a display panel.Wherein, this first
Test zone can be able to be except this for the region of the multirow pixel composition of arbitrary neighborhood on display panel, second test zone
Region except first test zone.
It is exemplary, it is assumed that display panel includes 1600 row pixels altogether, then driving device can will be located at display panel center
The 500th row pixel to the 1000th row pixel where region be determined as the first test zone.Correspondingly, driving device can
Remaining 1st row pixel to the 499th row pixel and the 1001st row pixel to the region that the 1600th row pixel forms is determined as
Second test zone.
Step 802, to the pixel of the first test zone and the pixel of the second test zone, output is initially grey based on third
The third data-signal that rank generates.
In embodiments of the present invention, in the corresponding relationship of the initial grayscale of determination and compensation grayscale, for be shown every
Frame test image, driving device it is available to show the frame test image when, the initial grayscale of the third of each pixel, and drive
The initial grayscale of third that dynamic device gets each pixel when showing the frame test image can be all the same.Also, the third
Initial grayscale can be any one grayscale in 0 to 255 grayscale.
Due in test process, showing that the initial grayscale of each pixel when a frame test image is all the same, and display panel
When actual displayed image, the initial grayscale of each pixel is not exactly the same.Therefore for the corresponding benefit of determining each initial grayscale
Grayscale is repaid, multiframe test image can be tested one by one.For example, can successively be surveyed to 256 frame test images
It tries, in the 256 frame test image, the initial grayscale of each pixel is followed successively by 0 to 255.That is each picture in first frame test image
The initial grayscale of element can be 0, and the initial grayscale of each pixel can be 1 in the second frame test image, the test of third frame
The initial grayscale of each pixel can be 2 in image, and so on.
Further, driving device can directly generate corresponding third according to the initial grayscale of each third got
Data-signal.Also, driving device can be defeated by the third data-signal in the pixel opening process in the first test zone
The corresponding pixel into the first test zone out, to drive pixel light emission.And it can be opened in the pixel in the second test zone
During opening, which is exported into the second test zone corresponding pixel, to drive pixel light emission.
Step 803, in the exhausted of the brightness for detecting the first test zone and the luminance difference of the brightness of the second test zone
When being greater than difference threshold to value, the initial grayscale of third of the pixel in targeted test region is adjusted, and based on the third after adjusting
Initial grayscale updates corresponding data-signal, until the luminance difference of the brightness of the brightness and the second test zone of the first test zone
The absolute value of value is less than or equal to difference threshold.
Optionally, which can be at least one of the first test zone and the second test zone.?
Be, driving device can by adjusting the display brightness of any test zone in the first test zone and the second test zone,
To improve the display homogeneity of display panel.
It in embodiments of the present invention, can be first using luminance detection circuit detection first before executing above-mentioned steps 803
The brightness of the brightness of test zone and the second test zone, brill can be nit (nit).Wherein, each test zone
Brightness can in the test zone pixel included by certain sub-regions average brightness.Then, luminance detection circuit can be with
The brightness of the first test zone and the second test zone that will test is sent to driving device, so that driving device detects two
Whether the absolute value of the luminance difference of test zone is greater than difference threshold, and adjusts at least one display area according to testing result
Brightness.Optionally, which can be color analysis instrument, and the model of the color analysis instrument can be CA310.
When driving device detects the absolute value of the luminance difference greater than difference threshold, two test sections can be determined
The display brightness in domain differs greatly, at this point, driving device, which can choose, adjusts the first test zone got and the second test
The initial grayscale of the corresponding third of pixel at least one test zone in region.Then driving device can continue based on tune
The initial grayscale of third after section generates data-signal and exports to corresponding pixel, to adjust the bright of at least one test zone
Degree.Later, the brightness that luminance detection circuit detects two test zones can be continued to use, and so on, until driving device
Until detecting that the absolute value of the luminance difference of two test zones is less than or equal to difference threshold.
Wherein, which can be to be preconfigured in driving device, and can be by developer rule of thumb
Configuration.Exemplary, which can be less than the identifiable minimum brightness difference of human eye, such as can be than the minimum brightness
The small 5nit of difference.
Alternatively, the difference threshold can be 0.It is 0 by setting difference threshold, can makes based on compensation grayscale generation
Data-signal make two test zones luminance difference be 0, that is to say so that human eye watching area and remove human eye watching area
Except region display brightness it is consistent.Further ensure display homogeneity.
It is exemplary, it is assumed that difference threshold 0, the display for the first test zone that luminance detection circuit is sent to driving device
Brightness is 10nit, and the display brightness of the second test zone is 7nit, then driving device can be calculated to two test zones
The absolute value of luminance difference is 3nit, is greater than difference threshold 0.At this point, the driving device, which can choose, adjusts the second test zone
In pixel the initial grayscale of third to increase the brightness of the second test zone, and/or adjust the pixel in the first test zone
The initial grayscale of third to increase the brightness of the first test zone.
Optionally, targeted test region can be the second test zone, then above-mentioned steps 803 can include:
When the display brightness for detecting the first test zone is greater than the display brightness of the second test zone, increases second and survey
Try the initial grayscale of third of the pixel in region.It that is to say, increase the amplitude of the data-signal of generation.
In display brightness of the display brightness for detecting the first test zone less than the second test zone, reduces second and survey
Try the initial grayscale of third of the pixel in region.It that is to say, reduce the amplitude of the data-signal of generation.
Since there may be the brightness of the display panel of certain properties, the first test zone to test less than second
The brightness in region, therefore when detecting the situation, the third that can correspond to the pixel in the second test zone of reduction is initially grey
Rank.
It is exemplary, it is assumed that driving device detects that the display brightness of the first test zone is greater than the display of the second test zone
Brightness, and driving device is got when showing the frame image, the first test zone and some pixel in the second test zone
The initial grayscale of third is 10.At this point, the driving device can increase the corresponding third of pixel in second test zone
Initial grayscale, when the initial grayscale of the corresponding third of pixel in second test zone is adjusted to 12, driving device inspection
The data-signal generated according to the initial grayscale of third after the adjusting is measured, so that the luminance difference of two test zones is 0.Cause
This is at this point, driving device can terminate to adjust.
The initial grayscale of the third after adjusting is compensated grayscale, and root by step 804
Grayscale is compensated according to the initial grayscale of third and third, generate initial grayscale and compensates the corresponding relationship of grayscale.
In embodiments of the present invention, it after driving device determines that the corresponding third of the initial grayscale of third compensates grayscale, drives
Dynamic device can compensate grayscale according to the initial grayscale of the third and third, generate initial grayscale and close with the corresponding of grayscale is compensated
System.Optionally, the corresponding relationship of the beginning grayscale and compensation grayscale may include in the first test zone at the beginning of the third of each pixel
The corresponding third of the initial grayscale of third of each pixel in the corresponding third compensation grayscale of beginning grayscale and/or the second test zone
Compensate grayscale.
It is exemplary, it is assumed that target detection grayscale is the second test zone, when driving device gets certain frame image of display, often
The initial grayscale of the third of a pixel is 10.And driving device determination is so that the absolute value of the luminance difference of two test zones is less than
Or when being equal to difference threshold, in second test zone, third compensation grayscale corresponding with the initial grayscale 10 of the third is 12, then
The driving device can be that 10 corresponding thirds compensate grayscale as the initial grayscale of third by 12.It is initially grey for other thirds
The third compensation grayscale of rank can be calculated with through the above steps 803.Later, driving device can be according to determining every
The initial grayscale of a third and third compensate grayscale, generate initial grayscale and compensate the corresponding relationship of grayscale.
It should be noted that above-mentioned steps 801 to step 804 can execute before display panel dispatches from the factory.It is optional
, which may include: driving chip and DDIC.Driving chip is determined for the first display area and second and shows
Show region, can be also used for generating the corresponding relationship of simultaneously storing initial grayscale and compensation grayscale, so that DDIC makes in display panel
With in the process, the corresponding compensation grayscale of initial grayscale got in real time is determined according to the corresponding relationship.Wherein, the driving chip
It can be mutually independent two chips with DDIC, or also can integrate in a chip.
It should be noted that the step of the initial grayscale of above-mentioned generation provided in an embodiment of the present invention and compensation grayscale corresponding relationship
Rapid sequencing can carry out appropriate adjustment, and step according to circumstances can also accordingly be increased and decreased.For example, above-mentioned steps 803
It may be performed simultaneously with step 804.Anyone skilled in the art in the technical scope disclosed by the present invention, can
The method for readily occurring in variation, should be covered by the protection scope of the present invention, therefore repeat no more.
In conclusion the embodiment of the invention provides a kind of driving methods of display panel.Since this method can be to
The pixel at least one display area in one display area and the second display area, output are based on the corresponding benefit of initial grayscale
Repay the data-signal of grayscale generation.Therefore the absolute value of the luminance difference of two display areas can be made to be less than or equal to difference
Threshold value, i.e., so that the display brightness difference of two display areas is smaller.The display homogeneity of the display panel is preferable.
The embodiment of the invention provides a kind of compensation circuit of display panel, which can be used for:
Determine the first display area and the second display area.The multirow pixel that first display area includes can be opened line by line
It opens, at least two row pixels can open simultaneously in the multirow pixel which includes.
According to the first initial grayscale of pixel in the first display area, the first data are exported to the pixel of the first display area
Signal.
According to the second initial grayscale of pixel in the second display area, the second data are exported to the pixel of the second display area
Signal.
Wherein, in the first data-signal and the second data-signal, pixel of at least one data-signal based on its output
Compensation grayscale corresponding to initial grayscale generates, also, makes the first display area based on the data-signal that compensation grayscale generates
The absolute value of the luminance difference of brightness and the brightness of the second display area is less than or equal to difference threshold.
In conclusion the embodiment of the invention provides a kind of compensation circuits of display panel.The compensation circuit can be used for
The pixel at least one display area into the first display area and the second display area, output are corresponding based on initial grayscale
Compensation grayscale generate data-signal.Therefore the absolute value of the luminance difference of two display areas can be made to be less than or equal to
Difference threshold, i.e., so that the display brightness difference of two display areas is smaller.The display homogeneity of the display panel is preferable.
The compensation circuit of display panel in above-described embodiment can be also used for executing above-mentioned steps 801 to step 804
Method, and the function that the compensation circuit executes is described in detail in the embodiment of method, will not do herein
Elaborate explanation.The compensation circuit of the display panel can integrate in the DDIC included by the driving device of display panel,
And it can integrate in the source electrode drive circuit that DDIC includes.
The embodiment of the invention provides a kind of driving device of display panel, the driving device may include: processor and
Memory and the computer program being stored on the memory, the processor realize such as Fig. 6 when can execute computer program
Or the driving method of display panel shown in Fig. 8.Also, the compensation circuit of display panel provided by the above embodiment can integrate
In the driving device of the display panel.
The embodiment of the invention provides a kind of display device, which may include: benefit provided by the above embodiment
Repay circuit or driving device provided by the above embodiment.
In addition, the display device can also include display panel, the compensation circuit or the driving device can be aobvious with this
Show that panel connects.The display device can be with are as follows: LCD panel, Electronic Paper, mobile phone, tablet computer, television set, display, notebook
Any products or components having a display function such as computer, Digital Frame, navigator.
It is apparent to those skilled in the art that for convenience and simplicity of description, the display of foregoing description
The compensation circuit of panel and the specific work process of driving device, can refer to corresponding processes in the foregoing method embodiment,
This is repeated no more.
The foregoing is merely alternative embodiments of the invention, are not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of driving method of display panel, which is characterized in that the described method includes:
Determine the first display area and the second display area, the multirow pixel that first display area includes is opened line by line, institute
It states at least two row pixels in the multirow pixel that the second display area includes while opening；
According to the first initial grayscale of pixel in first display area, the pixel output first of the first display area Xiang Suoshu
Data-signal；
According to the second initial grayscale of pixel in second display area, the pixel output second of the second display area Xiang Suoshu
Data-signal；
Wherein, the pixel of at least one of first data-signal and second data-signal based on its output is initial
Compensation grayscale corresponding to grayscale generates, also, makes first viewing area based on the data-signal that the compensation grayscale generates
The absolute value of the luminance difference of the brightness in domain and the brightness of second display area is less than or equal to difference threshold.
2. the method according to claim 1, wherein
First display area is the human eye watching area determined according to the blinkpunkt of human eye on said display panel, described
Second display area is the region in addition to the human eye watching area.
3. the method according to claim 1, wherein
First display area is to set on the display panel for showing the region of first resolution image, described the
Two display areas are to be set on the display panel for showing the region of second resolution image, and the first resolution
Greater than the second resolution.
4. according to the method in claim 2 or 3, which is characterized in that
First data-signal is based on the described first initial grayscale and generates；
Second data-signal is based on the described second initial grayscale corresponding second and compensates grayscale generation.
5. the method according to claim 1, wherein compensation grayscale corresponding to the initial grayscale is according to initial
The corresponding relationship of grayscale and compensation grayscale determines, before exporting the first data-signal to the pixel of first display area,
The method also includes:
Determine the first test zone and the second test zone, the multirow pixel that first test zone includes is opened line by line, institute
It states at least two row pixels in the multirow pixel that the second test zone includes while opening；
To the pixel of first test zone and the pixel of second test zone, output is raw based on the initial grayscale of third
At third data-signal；
In the absolute value of the luminance difference of the brightness of the brightness and second test zone that detect first test zone
When greater than the difference threshold, the initial grayscale of third of the pixel in targeted test region is adjusted, and based on the third after adjusting
Initial grayscale updates corresponding data-signal, until the brightness of first test zone and the brightness of second test zone
Luminance difference absolute value be less than or equal to the difference threshold, the targeted test region be first test zone and
At least one of described second test zone；
Grayscale is compensated using the initial grayscale of the third after adjusting as the corresponding third of the initial grayscale of the third, and according to described the
Three initial grayscale and the third compensate grayscale, generate the corresponding relationship of the initial grayscale and compensation grayscale.
6. according to the method described in claim 5, it is characterized in that, the targeted test region be second test zone,
The initial grayscale of third for adjusting the pixel in the targeted test region, comprising:
When the display brightness for detecting first test zone is greater than the display brightness of second test zone, increase institute
State the initial grayscale of third of the pixel in the second test zone；
When the display brightness for detecting first test zone is less than the display brightness of second test zone, reduce institute
State the initial grayscale of third of the pixel in the second test zone.
7. according to the method described in claim 5, it is characterized in that, the difference threshold is 0.
8. a kind of compensation circuit of display panel, which is characterized in that the compensation circuit is used for:
Determine the first display area and the second display area, the multirow pixel that first display area includes is opened line by line, institute
It states at least two row pixels in the multirow pixel that the second display area includes while opening；
According to the first initial grayscale of pixel in first display area, the pixel output first of the first display area Xiang Suoshu
Data-signal；
According to the second initial grayscale of pixel in second display area, the pixel output second of the second display area Xiang Suoshu
Data-signal；
Wherein, in first data-signal and second data-signal, picture of at least one data-signal based on its output
Compensation grayscale corresponding to the initial grayscale of element generates, also, makes described the based on the data-signal that the compensation grayscale generates
The absolute value of the luminance difference of the brightness of one display area and the brightness of second display area is less than or equal to difference threshold.
9. a kind of driving device of display panel, which is characterized in that the driving device includes: processor and memory and storage
Computer program on the memory, the processor realize such as claim 1 to 7 times when executing the computer program
The driving method of display panel described in one；The compensation circuit of display panel is integrated in the driving device of the display panel.
10. a kind of display device, which is characterized in that the display device includes: compensation circuit as claimed in claim 8 or such as
Driving device as claimed in claim 9.
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