CN104867449B - Display and pixel compensation method thereof - Google Patents
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Abstract
The invention provides a display and a pixel compensation method thereof. The pixel compensation method comprises that the driving current of each target pixel is detected within starting time of the display; the voltage compensation value of the target pixel is determined according to the present driving voltage, the driving current and a preset threshold voltage of the target pixel; and voltage compensation is carried out according to the voltage compensation value of the target pixel. Thus, voltage compensation is carried out on an aged pixel driving circuit, driving current output by the aged pixel driving circuit can be compensated, the defects including reduced brightness and ghost caused by aging can be solved, and normal use of users is not influenced.
Description
Technical field
The present invention relates to the pixel compensation technical field of display, and in particular to a kind of pixel compensation method of display and
Display.
Background technology
At present, with the development of Display Technique, the species of display is day by day various, wherein, Organic Light Emitting Diode
(Organic Light-Emitting Diode, abbreviation OLED) display is used as a kind of self-emitting display, and OLED's is luminous
Principle is similar to common inorganic light emitting diode (Light-Emitting Diode, abbreviation LED) device principle of luminosity, i.e., two
Very thin luminous organic material is deposited between individual electrode, unidirectional current is passed to the luminous organic material makes it light；It is anti-because of its
Answer that speed is fast, visual angle width, and prepared by organic material, can be curled, fold or as one of wearable device
Point, therefore have application widely in the special dimension such as portable product and military affairs.
In addition, the brightness of OLED with have direct relation by the driving current of each pixel, its pixel-driving circuit is necessary
Continual and steady driving current is provided for it within the whole frame period, but, with aging, the drive of its pixel of pixel-driving circuit
Streaming current can reduce, therefore the driving current to the pixel of pixel-driving circuit output compensates process, i.e., by by picture
The voltage of plain drive circuit realizes the compensation to driving current plus an offset, it is therefore desirable to get benefit before compensation
Value is repaid, is by detecting driving current, and the offset determined according to the driving current for detecting, with superelevation in prior art
Clearly as a example by (Ultra High Definition, abbreviation UHD) TV, resolution is 3840 × 2160, for four colour pattern pixel skills
For art (Red Green Blue White, abbreviation RGBW), pixel count is 3840 × 2160 × 4, and each column pixel has one
Individual current sense line, that is, have 3840 × 4 current sense lines, in the compensation mode, the drive that each current sense line is detected
Streaming current is the driving current of the pixel of 2160 row correspondence positions, and the driving voltage of every row pixel is mended plus offset
Repay, and need in advance to be stored offset, driving voltage is input to into pixel driver plus offset when pixel shows
In circuit, because whole detection process, the offset of computing driving voltage and storage need the long period, for UHD's
OLED TVs, the time is 300 seconds, and the time that often offset needed for row pixel is obtained is 300 seconds/2160/4 about 34.7 millis
Second, but under normal displaying mode, the refresh time per frame picture if refreshing frequency is 120 hertz is 8.3 milliseconds/frame, i.e.,
Under the compensation ability of existing hardware pixel-driving circuit, the time of often row pixel acquisition offset is much larger than during compensation model
The refresh time (i.e. per the refresh time of frame picture) of the often row pixel under normal displaying mode, it is therefore desirable in the compensation mode
Offset is obtained, while the luminescent device for guaranteeing OLED does not work.Therefore, existing a kind of compensation method is steady in OLED TVs
Surely after working more than 4 hours, the compensation deals of pixel ageing are carried out, yet with needing to obtain offset during compensation deals, is obtained
The time for taking offset is longer, and luminescent device does not work during obtaining offset, so as to result in pixel ageing
During compensation deals, OLED TVs are the state of black picture, and then have had a strong impact on the use of user.
The content of the invention
The present invention provides a kind of pixel compensation method and display of display, can solve the problem that in prior art to aging
Pixel-driving circuit compensates the problem for affecting user normally to use when value is obtained.
In a first aspect, the present invention provides a kind of pixel compensation method of display, including：
In the starting time of display, the driving current of object pixel is detected；
Present drive voltage, the driving current and default threshold voltage according to each object pixel determines institute
State the voltage compensation value of the object pixel；
Voltage compensation is carried out according to the voltage compensation value of the object pixel.
Second aspect, the present invention provides a kind of display, including：
Detection module, in the starting time of the display, detecting the driving current of object pixel；
First determining module, for according to the present drive voltage of each object pixel, the driving current and pre-
If threshold voltage determine the voltage compensation value of the object pixel；
Compensating module, for carrying out voltage compensation according to the voltage compensation value of the object pixel.
The third aspect, the present invention provides a kind of display, including：
Memorizer, for storage program；
Processor, for performing the program of the memory storage, performs following operation：
In the starting time of display, the driving current of object pixel is detected；
Present drive voltage, the driving current and default threshold voltage according to each object pixel determines institute
State the voltage compensation value of object pixel；
Voltage compensation is carried out according to the voltage compensation value of the object pixel；
Display screen, for the display image under the driving of the driving current.
The pixel compensation method and display of the display that the present invention is provided, in the starting time of display, detects mesh
The driving current of mark pixel, and the present drive voltage according to each object pixel, the driving current and default threshold
Threshold voltage determines the voltage compensation value of the object pixel；Voltage is carried out according to the voltage compensation value of the object pixel, can
Voltage compensation is carried out to aging pixel-driving circuit, so that the driving current of aging pixel-driving circuit output is carried out
Compensation, compensate for the display defects such as the aging luminance-reduction for bringing, ghost, and the present invention is due to being the starting time in display
Interior acquisition voltage compensation value, therefore the use of user is not affected, and avoid in prior art to aging pixel-driving circuit
Compensate the problem that the black picture state occurred when value is obtained affects user normally to use.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the embodiment of pixel compensation method one of inventive display；
Fig. 2 is the flow chart of another embodiment of pixel compensation method of inventive display；
Fig. 3 is the schematic diagram one of the monitoring image frame of the inventive method embodiment；
Fig. 4 is the schematic diagram two of the monitoring image frame of the inventive method embodiment；
Fig. 5 is the flow chart of the another embodiment of the pixel compensation method of inventive display；
Fig. 6 A are the structural representation of the embodiment of inventive display one；
Fig. 6 B are the structural representation of another embodiment of inventive display；
Fig. 6 C are the structural representation of the another embodiment of inventive display；
Fig. 6 D are the structural representation of the another embodiment of inventive display；
Fig. 7 is the structural representation of another embodiment of inventive display.
Specific 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 is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The pixel compensation method of the display of the embodiment of the present invention can apply in self-emitting display, and self-luminous shows
Device such as plasma panel, grating light valve, micro mechanical device, electric moistening display, electrochromic display device (ECD), electronic display,
Electrophoretic display, Field Emission Display, surface-conduction-electron emission display, OLED display etc..
Fig. 1 is the flow chart of the embodiment of pixel compensation method one of inventive display.As shown in figure 1, the present embodiment with
The pixel compensation method of the display is applied in OLED display illustrate, and method includes：
101st, in the starting time of display, the driving current of object pixel is detected；
102nd, according to each object pixel present drive voltage, driving current and default threshold voltage determine target picture
The voltage compensation value of element；
103rd, voltage compensation is carried out according to the voltage compensation value of object pixel.
Pixel-driving circuit in OLED display has two kinds of mode of operations, respectively normal displaying mode and compensation mould
Formula, normal displaying mode ensures normal display image, and compensation model is used to detect the aging conditions of OLED display and obtain drive
The voltage compensation value of galvanic electricity pressure.The regular hour is required for because each pixel obtains offset, therefore in order to not affect user
Use, the embodiment of the present invention carries out the acquisition of voltage compensation value in the starting time of display, is now for the last time
Aging conditions when using are compensated.
Illustrate by taking RGBW as an example in the present invention, i.e., each pixel have tetra- sub-pixel groups of RGBW into.But need explanation
, not in this, as the restriction of the present invention.
By taking the resolution 3840 × 2160 of UHD as an example, 3840 × 4 row are had, pixel is 3840 × 4 × 2160 rows of row, often
Row pixel has a current sense line, that is, have 3840 × 4 current sense lines, and there is individual electric current ratio the end of current sense line
Compared with circuit, the driving current of object pixel can be detected.
Specifically, from formulaAs can be seen that
After pixel-driving circuit occurs aging, the threshold voltage vt h of the driving tube of pixel-driving circuit can occur drift and Vth data
When gradually increasing, under identical driving voltage Vdata, driving current IdsTo taper into, therefore, it can by relatively more current
The driving current of the object pixel for detecting and the default driving current of object pixel are determining the pixel driver of object pixel
It is aging whether circuit occurs, if the driving current of the object pixel for currently detecting and default driving current compare, there occurs
Change, then it is assumed that the pixel-driving circuit generation of the object pixel is aging, needs to carry out voltage compensation, that is, need to get voltage
Offset；The driving current of the standard set when herein default driving current can be and dispatch from the factory, it is also possible to refer to front one action
The driving current of record.
When obtaining voltage compensation value, the present drive voltage, driving current and default threshold according to each object pixel
Threshold voltage determines the voltage compensation value of object pixel；The threshold value of the standard set when herein default threshold voltage can be and dispatch from the factory
Voltage.
Specifically, can be determined current according to the present drive voltage of each object pixel and driving current
Threshold voltage, current threshold voltage and the voltage compensation value that the difference of default threshold voltage is exactly the object pixel, can be with
The voltage compensation value of each object pixel is stored, and voltage compensation is carried out according to the voltage compensation value of the object pixel,
Will the object pixel present drive voltage plus the driving voltage after finally being compensated after the voltage compensation value, the target
Driving current after the compensation of pixel and it is aging before driving current it is equal, so as to the Vth for offsetting driving tube drifts about what is caused
The display defects such as luminance-reduction, ghost；Wherein, the μ in above-mentioned formula is driving tube carrier mobility；CoxFor unit area
Capacitive dielectric layer；L and W are respectively the channel length and width of driving tube；Vth is the threshold voltage of driving tube；Vgs is driving tube
Gate source voltage；IdsFor the driving current of pixel.
The starting time of the display in the embodiment of the present invention refers to include the operation system of display screen and display
The starting time of system.
The pixel compensation method of the self-emitting display that the present embodiment is provided, in the starting time of display, detects mesh
The driving current of mark pixel, and determined whether to carry out voltage compensation according to the driving current of object pixel；If so, then according to each
The present drive voltage of object pixel and default threshold voltage determine the voltage compensation value of object pixel；According to object pixel
Voltage compensation value carries out voltage, can carry out voltage compensation to aging pixel-driving circuit, so that aging pixel is driven
The driving current of dynamic circuit output is compensated, and the display defects such as the aging luminance-reduction for bringing, ghost is compensate for, due to being
The acquisition voltage compensation threshold voltage in the starting time of display, therefore the use of user is not affected, so as to avoid existing skill
The black picture state that occurs when value is obtained is compensated on aging pixel-driving circuit in art and affects what user normally used
Problem.
Fig. 2 is the flow chart of another embodiment of the pixel compensation method of inventive display.As shown in Fig. 2 in Fig. 1 institutes
On the basis of the embodiment for showing, further, due to the starting time of display it is limited, therefore when display line number is more
In the case of, the step that possibly all pixels row cannot be performed both by shown in Fig. 1.In such a case, it is possible to some target lines
Performing above-mentioned steps carries out the acquisition of voltage compensation value.For other rows, the voltage compensation value that can be obtained according to target line enters
Row compensation.
Specifically, before 101, i.e., before the driving current of detection object pixel, can proceed as follows：
104th, the line number that voltage compensation value acquisition can be carried out in display is obtained；The line number of voltage compensation value acquisition can be carried out
What the starting time of voltage compensation value acquisition time and display for needed for the often row pixel according to display drew；
105th, according to the line number that can carry out voltage compensation value acquisition, in each row that display is included target line, mesh are determined
Pixel in mark row is object pixel.
Because the acquisition of the voltage compensation value of each pixel is required for regular hour, and the quantity of the pixel of display
It is huge, but the starting time of display is certain, such as and the pixel compensation time of the OLED display for FHD is 68 seconds
S (), the pixel compensation time of the OLED display for UHD is 300 seconds, but the starting time of display may only only have
10 seconds or so, it is therefore desirable to carry out the step of can perform Fig. 1 in the starting time of the display is got before detecting electric current
The line number of the pixel that voltage compensation value is obtained.The line number that voltage compensation value acquisition can be carried out can be previously according to the every of display
What the starting time of voltage compensation value acquisition time and display needed for row pixel drew；Electricity needed for where each row pixel
Pressure offset obtains the time for known parameters, and the voltage compensation value as needed for the OLED display often row pixel of UHD obtains the time
It is about 34.7 milliseconds/row (ms/ rows) for 300s/2160 row/4, the starting time of such as display can carry out electricity by taking 10s as an example, then
The line number that pressure offset is obtained obtains 288 rows for 10s divided by 34.7ms/ rows, you can to carry out voltage to the object pixel of 288 rows
Offset obtain, can carry out voltage compensation value acquisition line number account for the UHD OLED display total line number ratio be 13%；
The voltage compensation value acquisition time as needed for the OLED display often row pixel of FHD is that 68s/1080 row/4 are about 15.7ms/ rows,
If the starting time of display is by taking 10s as an example, then the line number that can carry out voltage compensation value acquisition is obtained for 10s divided by 15.7ms/ rows
To 636 rows, you can to carry out voltage compensation value acquisition to the object pixel of 636 rows, the line number of voltage compensation value acquisition can be carried out
The ratio for accounting for total line number of the OLED display of the FHD is 58%.
In the present embodiment, in order to eaily illustrate, therefore the OLED display of UHD is can carry out voltage compensation
The line number that value is obtained is explanation as a example by 216, and according to the line number that can carry out voltage compensation value acquisition, such as 216 rows are included in display
Each row in determine target line, such as target line equidistantly distributed can be had a line as target line, the mesh using in per 10 rows
Pixel in mark row is above-mentioned object pixel.
Above-mentioned 104,105 is to realize the electricity to pixel-driving circuit in the starting time of limited display
The acquisition of pressure offset, it is therefore desirable to which obtaining can carry out the line number of voltage compensation value acquisition in display, due to carrying out voltage
The line number that offset is obtained may not be all of pixel column of display, it is therefore desirable to it is determined that carrying out voltage compensation value acquisition
Target line, the pixel in target line be object pixel.
Fig. 3 is the schematic diagram one of the monitoring image frame of the inventive method embodiment.
Can be that specific monitoring image frame is detected during the driving current of detection object pixel, as shown in figure 3,
Can carry out the line number of voltage compensation value acquisition as 216, the 1st row and the 2nd row can carry out voltage compensation value to the OLED display of UHD
Between the line number of acquisition, actually there are 9 rows that the attenuation of its driving current is not detected in detecting every time.
Fig. 4 is the schematic diagram two of the monitoring image frame of the inventive method embodiment.
In actual applications, determine that the mode of target line can have various in each row that display is included, optionally, make
For a kind of enforceable mode, the line number of voltage compensation value acquisition can will can be carried out as multiple pixel column groups, each pixel
Row group includes multiple pixel columns；The pixel column of same position is used as target line in selecting per group.
Specifically, the line number of voltage compensation value acquisition can will be carried out, the such as OLED display for UHD is using 216 as 216
Individual pixel column group, each pixel column group includes multiple pixel columns, and the line number by the total pixel for including display is divided by can
The line number for carrying out voltage compensation value acquisition obtains the line number included in each pixel column group, such as can draw 2160 divided by 216,
Each pixel column group includes 10 pixel columns, naturally it is also possible to 288 as 288 pixel column groups, here just for the sake of setting
Meter and convenience of calculation.
The pixel column of same position is used as target line in selecting per group, as shown in figure 4, selecting the first row (the in first group
1-1 rows) used as target line, then the 2nd group equally selects the first row (2-1 rows) as target line, other remaining pixel column groups
In it is same select the first row as target line, can also select the second row as target line in certain first group, the present invention is implemented
Do not limit in example.
In actual applications, the implementation for carrying out voltage compensation according to the voltage compensation value of object pixel can also have many
Kind, optionally, as a kind of enforceable mode, voltage compensation being carried out according to the voltage compensation value of object pixel, can adopt
Following method：For the target line in each pixel column group, object pixel is entered using the voltage compensation value of each object pixel
Row voltage compensation；For the non-targeted row in each pixel column group, using the voltage compensation value of each object pixel in target line
Voltage compensation is carried out to the corresponding pixel in position in non-targeted row.
Specifically, as shown in figure 4, for the target line in each pixel column group, using the object pixel in target line
Voltage compensation value carries out voltage compensation to the object pixel, and 1-1 rows are then adopted as the target line of the 1st pixel column group in Fig. 4
Voltage compensation is carried out with the voltage compensation value of the object pixel of the 1-1 rows, each object pixel is compensated 4 times, because each mesh
Mark pixel has four sub-pixels；
For the non-targeted row in each pixel column group, such as 1-2,1-3,1-4,1-5,1-6,1-7,1-8,1-9,1-10
For, it is the voltage compensation value of each object pixel in 1-1 rows to the correspondence position in those non-targeted rows using target line
Pixel carry out voltage compensation.
In above-mentioned specific embodiment, due to select per group in same position pixel column as target line, to target picture
The driving current of element is when being detected, therefore the distribution uniform of the target line for detecting, when the pixel after compensation shows effect compared with
It is good, be not in larger difference in the picture of whole display.
On the basis of above-described embodiment, it should be noted that because the object pixel to every row pixel carries out voltage benefit
When repaying value acquisition, the regular hour is needed, if while also can when obtaining the voltage compensation value of the object pixel of all row pixels
There is black picture state, therefore can not simultaneously obtain the voltage compensation value of the object pixel of all row pixels, detect each target
Certain time interval is needed between row, using the picture in the pixel column group that the time interval can be located each target line
The voltage compensation value of element is obtained and finished.Therefore, before the driving current of detection object pixel, can specifically in the following ways
Carry out：
It is determined that each target line in, obtain detection two adjacent target row object pixels driving current it is initial when
Between between time interval, time interval is according to the voltage compensation value needed for often row pixel to obtain the time and per two field picture
What refresh time determined.
Specifically, can be previously according to during the refreshing of the voltage compensation value of every row pixel acquisition time and every two field picture
Between determine a time interval, the time interval be detect two adjacent target row object pixels driving current initial time
Between time interval, voltage compensation value as needed for the OLED display of UHD often row pixel obtains the time as 34.7ms/ rows
As a example by, under normal displaying mode, the refreshing frequency of the picture of display is 120Hz, and the refresh time per frame picture is 8.3ms/
Frame, it can be deduced that：34.7ms/ rows/8.3ms/ frames are equal to 4 frames/OK after rounding, i.e., the time that every 4 frame picture shows can be detected
The driving current of one-row pixels simultaneously obtains the voltage compensation value of the row pixel, i.e. the time is at intervals of 4 frames/OK.As shown in figure 4, inspection
After the completion of surveying the driving current of 1-1 row object pixels, normal displaying mode is switched at once, treat normally to show 4 frame pictures with
Afterwards, now the voltage compensation value of other row pixels is obtained and completed in 1-1 rows and the 1st pixel column group, is switched again
To under compensation model, the driving current of 2-1 row object pixels is detected, so repeatedly, until the compensation of target complete pixel voltage
Value acquisition is finished；Voltage compensation value as needed for the OLED display of FHD often row pixel obtains the time as 15.7ms/ behaviors
Example, under normal displaying mode, the refreshing frequency of the picture of display is 120Hz, and the refresh time per frame picture is 8.3ms/ frames,
Can draw：15.7ms/ rows/8.3ms/ frames are equal to 2 frames/OK after rounding, i.e., the time that every 2 frame picture shows can detect a line
The driving current of pixel simultaneously obtains the voltage compensation value of the row pixel, i.e. the time is at intervals of 2 frames/OK.
Further, since carry out the target line of voltage compensation using Fig. 1 steps, including the electricity that compensated of object pixel
Pressure is more accurate, it is contemplated that each row in display is accurately supplemented in a balanced way.Can adopt in each startup of display
Aforesaid way chooses different target lines.
Specifically, above-mentioned all using the 1st row pixel in each pixel column group as target line, each time in display is opened
When dynamic, the number of starts of this time can be recorded, record 1, when starting next time if first time starts, thus it is possible to vary pixel column group
In target line, start and can successively circulate, Zhi Daoduo using the 2nd row in each pixel column group as target line for such as second
The all pixels row in each pixel column group is detected after secondary startup；A line can also be randomly choosed in pixel column group
As target line.
Each time of display starts corresponding target line difference, is in order to display will be all in multiple start-up course
Pixel column all detect, can be more accurate in compensation, if as shown in figure 4, always using 1-1 rows as target line, the
1-2 is compensated until the voltage compensation value that 1-10 rows are detected always with 1-1 rows, then for 1-2 is until 1-10 rows
For compensate it is not accurate enough.
Fig. 5 is the flow chart of the another embodiment of the pixel compensation method of inventive display, as shown in figure 5, aforementioned
On the basis of embodiment, different target lines are chosen in order to realize starting every time, then each voltage compensation value can be obtained
Selected target line is recorded.I.e. after the voltage compensation value according to object pixel carries out voltage compensation, also include：
106th, record is currently up the target line in the time.
Specifically, the mesh chosen during the target line, i.e. startup each to display in the time of being currently up can be recorded
Mark row is recorded, as reference during selection target row during for starting next time, if start using same mesh always every time
Then other non-targeted rows are possible to the not accurate enough of compensation to mark row, therefore for the different numbers of starts, in each pixel column group
Using the target line different from last startup.
In the present embodiment, because the driving voltage that compensated of the object pixel that target line includes is more accurate, because
This considers accurately to supplement each row in display in a balanced way, and record is currently up the target line in the time, for next
The record that the last time is may be referred to during secondary startup selects different target lines.In addition, in order to examine to the driving current of object pixel
Voltage compensation is surveyed and carries out, because the image refresh time under normal displaying mode is less than the often compensation of row pixel under compensation model
Time, therefore can not be detected in normal display image, before the driving current of object pixel can also be detected, insertion prison
Used as present image, detection image frame is the image using default gray scale display target pixel to altimetric image frame.
Specifically, detect object pixel driving current before, in the compensation mode, insertion monitoring image frame as work as
Front image, as shown in figure 4, inserting a monitoring image frame during object pixel of detection 1-1 rows, the monitoring image frame only shows
The object pixel of 1-1 rows, that is, the object pixel for there was only the 1-1 rows lights, and the object pixel of the 1-1 rows can be adopted
What default gray scale showed, each object pixel of the such as 1-1 rows can be shown using same gray scale, it would however also be possible to employ no
Same gray scale, is not intended to limit in the embodiment of the present invention.
The step can be performed behind 106.
In present embodiment, insertion monitoring image frame is realized in the compensation mode, to object pixel as present image
Driving current detected, and carry out voltage compensation.
In order to avoid user starts display in short time interval, so as to cause unnecessary compensation, then in the inspection
After surveying the driving current of object pixel, the driving current of the object pixel can also be compared with threshold value, if being less than threshold value
Then determining need to carry out voltage compensation.
Because after pixel-driving circuit is aging, driving current can diminish, so by the driving current of the object pixel
Compare with threshold value, determining if less than threshold value need to carry out voltage compensation, need not otherwise carry out voltage compensation.
In present embodiment, judge whether carrying out voltage compensation, if not needing voltage compensation, reduce unnecessary
Energy consumption.
Fig. 6 A are the structural representation of the embodiment of inventive display one.As shown in Figure 6A, the display of the present embodiment, can
To include：Detection module 601, the first determining module 602 and compensating module 603；Wherein, detection module 601, in display
Starting time in, detect object pixel driving current；
First determining module 602, for being determined whether to carry out voltage compensation according to the driving current of object pixel；If so,
Then determine the present drive voltage of object pixel；
First determining module 602, is additionally operable to present drive voltage according to each object pixel, driving current and default
Threshold voltage determines the voltage compensation value of object pixel；
Compensating module 603, for carrying out voltage compensation according to the voltage compensation value of object pixel.
Display in the present embodiment is illustrated by taking OLED display as an example, the pixel-driving circuit in OLED display
There are two kinds of mode of operations, respectively normal displaying mode and compensation model, normal displaying mode ensures normal display image, compensation
Pattern is used to detect the aging conditions of OLED display and do driving voltage to compensate accordingly.Because the voltage of each pixel is mended
Repay value acquisition and be required for the regular hour, therefore in order to not affect the use of user, startup of the embodiment of the present invention in display
In time, voltage compensation value acquisition is carried out, be now that aging conditions when using for the last time are compensated.
Detection module 601 can include current sense line and current comparison circuit.
By taking the resolution 3840 × 2160 of UHD as an example, 3840 × 4 row are had, pixel is 3840 × 4 × 2160 rows of row, often
Row pixel has a current sense line, that is, have 3840 × 4 current sense lines, and there is individual electric current ratio the end of current sense line
Compared with circuit, the driving current of object pixel can be detected, be determined whether to carry out voltage compensation according to the driving current of object pixel.
Specifically, from formulaAs can be seen that working as
Pixel-driving circuit occur it is aging after, the threshold voltage vt h of the driving tube of pixel-driving circuit drift can occur and Vth data by
The cumulative added-time, under identical driving voltage Vdata, driving current IdsTo taper into, therefore, detection module 601 can lead to
Cross the driving current of the object pixel for more currently detecting and the default driving current of object pixel to determine object pixel
Pixel-driving circuit whether occur it is aging, if the driving current of the object pixel for currently detecting and default driving current ratio
Compared with there occurs change, then it is assumed that the pixel-driving circuit of the object pixel occurs aging, needs to carry out voltage compensation；It is pre- herein
If driving current may indicate that the driving current of the standard set during factory, it is also possible to refer to the driving electricity of front one action record
Stream.
During compensation, the first determining module 602 is according to the present drive voltage of each object pixel, driving current and default
Threshold voltage determine the voltage compensation value of object pixel；Herein default threshold voltage may indicate that the standard that sets during factory
Threshold voltage.
Specifically, the first determining module 602 can be according to the present drive voltage of each object pixel and driving electricity
Stream, using above-mentioned formula current threshold voltage is calculated, and current threshold voltage is exactly with the difference of default threshold voltage
The voltage compensation value of the object pixel, compensating module 603 carries out voltage compensation according to the voltage compensation value of the object pixel, will
The present drive voltage of the object pixel is plus the driving voltage after finally being compensated after the voltage compensation value, the object pixel
Compensation after driving current and it is aging before driving current it is equal, so as to the Vth for offsetting driving tube drifts about the brightness that causes
The display defects such as reduction, ghost；Wherein, the μ in above-mentioned formula is driving tube carrier mobility；CoxFor the insulation of unit area
Layer capacitance；L and W are respectively the channel length and width of driving tube；Vth is the threshold voltage of driving tube；Vgs is the grid of driving tube
Source voltage；IdsFor the driving current of pixel.
The display that the present embodiment is provided, including：Detection module, the first determining module and compensating module；Wherein, mould is detected
Block, in the starting time of display, detecting the driving current of object pixel；First determining module, for according to target
The driving current of pixel determines whether to carry out voltage compensation；If, it is determined that the present drive voltage of object pixel；First determines
Module, is additionally operable to the present drive voltage according to each object pixel, driving current and default threshold voltage and determines target picture
The voltage compensation value of element；Compensating module, for carrying out voltage compensation according to the voltage compensation value of object pixel, can be to aging
Pixel-driving circuit carries out voltage compensation, so that the driving current of aging pixel-driving circuit output is compensated,
The display defects such as the aging luminance-reduction for bringing, ghost are compensate for, due to being to obtain voltage in the starting time of display to mend
Repay value, therefore do not affect the use of user, so as to solve prior art in voltage benefit is carried out to aging pixel-driving circuit
Repay the problem for affecting user normally to use when value is obtained.
Optionally, as a kind of enforceable mode, as shown in Figure 6B, Fig. 6 B are another embodiment of inventive display
Structural representation, on the basis of the embodiment shown in Fig. 6 A, display also includes：
Second determining module 604, for obtaining display in can carry out the line number of voltage compensation value acquisition；Voltage can be carried out
Voltage compensation value of the line number for needed for the often row pixel according to display that offset is obtained obtains opening for time and display
What the dynamic time drew；
Second determining module 604, is additionally operable to according to can carry out the line number of voltage compensation value acquisition, display include it is each
Target line is determined in row, the pixel in target line is object pixel.
The role of second determining module 604 is right in order to realize in the starting time of limited display
The acquisition of the voltage compensation value of pixel-driving circuit, it is therefore desirable to which determining can carry out the row of voltage compensation value acquisition in display
Number, because the line number that can carry out voltage compensation value acquisition may not be all of pixel column of display, it is therefore desirable to it is determined that
Carry out the target line of voltage compensation value acquisition.
Optionally, as a kind of enforceable mode, the second determining module 604, specifically for：
The line number of voltage compensation value acquisition will can be carried out as multiple pixel column groups, each pixel column group includes multiple pixels
OK；
The pixel column of same position is used as target line in selecting per group.
Optionally, as a kind of enforceable mode, compensating module 603, specifically for：
For the target line in each pixel column group, object pixel is carried out using the voltage compensation value of each object pixel
Voltage compensation；
For the non-targeted row in each pixel column group, using the voltage compensation value of each object pixel in target line to non-
The corresponding pixel in position carries out voltage compensation in target line.
Optionally, as a kind of enforceable mode, detection module 601, specifically for：
It is determined that each target line in, obtain detection two adjacent target row object pixels driving current it is initial when
Between between time interval, time interval is according to the voltage compensation value needed for often row pixel to obtain the time and per two field picture
What refresh time determined.
Optionally, as a kind of enforceable mode, each time of display starts corresponding target line difference.
Optional again, used as another kind of enforceable mode, as shown in Figure 6 C, Fig. 6 C are the another enforcement of inventive display
The structural representation of example, on the basis of the embodiment shown in Fig. 6 B, display also includes：
Logging modle 605, the target line being currently up for record in the time.
Optional again, used as another kind of enforceable mode, as shown in Figure 6 D, Fig. 6 D are the another enforcement of inventive display
The structural representation of example, on the basis of the embodiment shown in Fig. 6 A, display also includes：
Insertion module 606, for inserting monitoring image frame as present image, detection image frame is using default gray scale
The image of display target pixel.
Certainly the insertion module can also be on the basis of the embodiment shown in Fig. 6 B, Fig. 6 C, what display included
Module.
Optionally, as a kind of enforceable mode, the first determining module 601 is additionally operable to the drive of the object pixel
Streaming current compares with threshold value, and determining if less than threshold value need to carry out voltage compensation.
The display of the present embodiment, can be used for performing the technical scheme of the embodiment of the method as shown in Fig. 1-5 is arbitrary, in fact
Existing principle is similar with technique effect, and here is omitted.
Fig. 7 is the structural representation of another embodiment of inventive display.As shown in fig. 7, the display of the present embodiment, can
To include：Memorizer 701, processor 702 and display screen 703；Wherein, memorizer 701, for storage program；Processor
702, for performing the program of the storage of memorizer 701, perform following operation：
In the starting time of display, the driving current of object pixel is detected；
Present drive voltage, the driving current and default threshold voltage according to each object pixel determines target picture
The voltage compensation value of element；
Voltage compensation is carried out according to the voltage compensation value of object pixel；
Display screen 703, for the display image under the driving of driving current.
Display in the present embodiment is illustrated by taking OLED display as an example, the pixel-driving circuit in OLED display
There are two kinds of mode of operations, respectively normal displaying mode and compensation model, normal displaying mode ensures normal display image, compensation
Pattern is used to detect the aging conditions of OLED display and do driving voltage to compensate accordingly.Because the voltage of each pixel is mended
Repay value acquisition and be required for the regular hour, therefore in order to not affect the use of user, startup of the embodiment of the present invention in display
In time, the acquisition of voltage compensation value is carried out, be now that aging conditions when using for the last time are compensated.
Processor 702 can include current sense line and current comparison circuit.
Specifically, the program in memorizer 701 can include program code, and program code includes computer-managed instruction,
Can be with data storage and image.Memorizer 701 may be comprising random access memory (random access memory, letter
Claim RAM), it is also possible to also including nonvolatile memory (non-volatile memory), for example, at least one disk storage
Device.
By taking the resolution 3840 × 2160 of UHD as an example, 3840 × 4 row are had, pixel is 3840 × 4 × 2160 rows of row, often
Row pixel has a current sense line, that is, have 3840 × 4 current sense lines, and there is individual electric current ratio the end of current sense line
Compared with circuit, the driving current of object pixel can be detected, be determined whether to carry out voltage compensation according to the driving current of object pixel.
Specifically, from formulaAs can be seen that working as
Pixel-driving circuit occur it is aging after, the threshold voltage vt h of the driving tube of pixel-driving circuit drift can occur and Vth data by
The cumulative added-time, under identical driving voltage Vdata, driving current IdsTo taper into, therefore, processor 702 can pass through
The driving current of the object pixel for more currently detecting and the default driving current of object pixel are determining object pixel
It is aging whether pixel-driving circuit occurs, if the driving current of the object pixel for currently detecting and default driving current ratio
Compared with there occurs change, then it is assumed that the pixel-driving circuit of the object pixel occurs aging, needs to carry out voltage compensation；It is pre- herein
If driving current may indicate that the driving current of the standard set during factory, it is also possible to refer to the driving electricity of front one action record
Stream.
During compensation, processor 702 is according to the present drive voltage of each object pixel, driving current and default threshold value
Voltage determines the voltage compensation value of object pixel；Herein default threshold voltage may indicate that the threshold value electricity of the standard set during factory
Pressure.The voltage compensation value determined can be stored in bin 701.
Specifically, processor 702 can be according to the present drive voltage of each object pixel and driving current, using upper
State formula and calculate current threshold voltage, current threshold voltage and the difference of default threshold voltage is exactly the object pixel
Voltage compensation value, processor 702 carries out voltage compensation according to the voltage compensation value of the object pixel, will the object pixel
Present drive voltage is plus the driving voltage after finally being compensated after the voltage compensation value, the drive after the compensation of the object pixel
Streaming current and it is aging before driving current it is equal, so as to drift about luminance-reduction, ghosts for causing etc. of the Vth for offsetting driving tube is aobvious
Show defect；Wherein, the μ in above-mentioned formula is driving tube carrier mobility；CoxFor the capacitive dielectric layer of unit area；L and W point
Not Wei driving tube channel length and width；Vth is the threshold voltage of driving tube；Vgs is the gate source voltage of driving tube；IdsIt is picture
The driving current of element.
Specifically, display screen 703 includes pixel-driving circuit, and pixel-driving circuit includes luminescence unit such as OLED, place
Reason device 702 carries out voltage compensation according to the voltage compensation value of the object pixel, can be specifically the view data that basis gets,
Driving voltage after compensation is calculated, control signal is generated to pixel-driving circuit, after allowing pixel-driving circuit output to compensate
Driving voltage, and driving voltage changes into driving current and is input to luminescence unit by the pixel-driving circuit, and luminescence unit is just
Can light, display is such that it is able to display image.
Optionally, as a kind of enforceable mode, processor 702, it is additionally operable to the driving current in detection object pixel
Before, following operation is performed：
Obtaining can carry out the line number of voltage compensation value acquisition in display；The line number that voltage compensation value acquisition can be carried out is root
Draw according to the starting time of the voltage compensation value acquisition time needed for the often row pixel of display and display；
According to the line number that can carry out voltage compensation value acquisition, in each row that display is included target line, target line are determined
In pixel be object pixel.
Optionally, as a kind of enforceable mode, processor 702, also particularly useful for the following operation of execution：
The line number of voltage compensation value acquisition will can be carried out as multiple pixel column groups, each pixel column group includes multiple pixels
OK；
The pixel column of same position is used as target line in selecting per group.
Optionally, as a kind of enforceable mode, processor 702, also particularly useful for the following operation of execution：
For the target line in each pixel column group, object pixel is carried out using the voltage compensation value of each object pixel
Voltage compensation；
For the non-targeted row in each pixel column group, using the voltage compensation value of each object pixel in target line to non-
The corresponding pixel in position carries out voltage compensation in target line.
Optionally, as a kind of enforceable mode, processor 702, also particularly useful for the following operation of execution：
It is determined that each target line in, obtain detection two adjacent target row object pixels driving current it is initial when
Between between time interval, time interval is according to the voltage compensation value needed for often row pixel to obtain the time and per two field picture
What refresh time determined.
Optionally, as a kind of enforceable mode, each time of display starts corresponding target line difference.
Optionally, as a kind of enforceable mode, processor 702, it is additionally operable in the voltage compensation according to object pixel
Value is carried out after voltage compensation, performs following operation：
Record is currently up the target line in the time.
Record result can be stored in memorizer 701.
Optionally, as a kind of enforceable mode, processor 702, it is additionally operable to the driving current in detection object pixel
Before, following operation is performed：
Used as present image, detection image frame is the figure using default gray scale display target pixel to insertion monitoring image frame
Picture.
Monitoring image frame can be predefined well, in being stored in memorizer 701.
Optionally, as a kind of enforceable mode, processor 702, it is additionally operable to the driving current in detection object pixel
Afterwards, following operation is performed：
The driving current of the object pixel is compared with threshold value, determining if less than threshold value need to carry out voltage compensation.
Processor 702 can be general processor, including central processing unit (Central Processing Unit, referred to as
CPU)；Can also be digital signal processor (DSP), special IC (ASIC), field programmable gate array (FPGA) or
Person other PLDs, discrete gate or transistor logic, discrete hardware components.
The display that the present embodiment is provided, including：Memorizer, processor；Wherein, memorizer, for depositing program；Process
Device, for performing the program of memorizer storage, performs following operation：In the starting time of display, object pixel is detected
Driving current；Present drive voltage, the driving current and default threshold voltage according to each object pixel determines target
The voltage compensation value of pixel；Voltage compensation is carried out according to the voltage compensation value of object pixel, can be to aging pixel driver electricity
Road carries out voltage compensation, so that the driving current of aging pixel-driving circuit output is compensated, compensate for aging
The display defects such as the luminance-reduction, the ghost that bring, due to being the acquisition that voltage compensation value is carried out in the starting time of display,
Therefore do not affect the use of user, so as to solve prior art in voltage compensation value carried out to aging pixel-driving circuit obtain
The problem for affecting user normally to use when taking.
It should be noted that for display embodiment, because it essentially corresponds to embodiment of the method, so related
Part is illustrated referring to the part of embodiment of the method.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of said method embodiment can pass through
Completing, aforesaid program can be stored in a computer read/write memory medium the related hardware of programmed instruction, the program
Upon execution, the step of including said method embodiment is performed；And aforesaid storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
Finally it should be noted that：Above example only to illustrate the technical scheme of the application, rather than a limitation；Although
The application has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modifications or replace, do not make appropriate technical solution essence depart from each embodiment technical scheme of the application spirit and
Scope.
Claims (17)
1. a kind of pixel compensation method of display, it is characterised in that include：
In the starting time of display, the driving current of object pixel is detected；
Present drive voltage, the driving current and default threshold voltage according to each object pixel determines the mesh
The voltage compensation value of mark pixel；
Voltage compensation is carried out according to the voltage compensation value of the object pixel；
Wherein, before the driving current of the detection object pixel, the pixel compensation method of the display also includes：
Obtaining can carry out the line number of voltage compensation value acquisition in the display；The line number for carrying out voltage compensation value acquisition
Voltage compensation value for needed for the often row pixel according to the display obtains the time and the starting time of the display is obtained
Go out；According to the line number for carrying out voltage compensation value acquisition, target line is determined in each row that the display is included, institute
It is the object pixel to state the pixel in target line.
2. method according to claim 1, it is characterised in that the row of voltage compensation value acquisition can be carried out described in the basis
Number, in each row that the display is included target line is determined, including：
Using the line number for carrying out voltage compensation value acquisition as multiple pixel column groups, each pixel column group includes multiple pixels
OK；
The pixel column of same position is used as the target line in selecting per group.
3. method according to claim 2, it is characterised in that the voltage compensation value according to the object pixel is carried out
Voltage compensation, including：
The target line in for pixel column group each described, using the voltage compensation value of object pixel each described to described
Object pixel carries out voltage compensation；
For the non-targeted row in pixel column group each described, mended using the voltage of each object pixel in the target line
Repay value carries out voltage compensation to the corresponding pixel in position in the non-targeted row.
4. the method according to any one of claim 1-3, it is characterised in that the driving current of the detection object pixel it
Before, also include：
It is determined that each target line in, obtain detection two adjacent target row object pixels driving current initial time it
Between time interval, the time interval is according to the voltage compensation value needed for often row pixel to obtain the time and per two field picture
What refresh time determined.
5. the method according to any one of claim 1-3, it is characterised in that each time of the display starts corresponding
Target line is different.
6. method according to claim 5, it is characterised in that the voltage compensation value according to the object pixel is carried out
After voltage compensation, also include：
Record is currently up the target line in the time.
7. the method according to any one of claim 1-3, it is characterised in that the driving current of the detection object pixel it
Before, also include：
Used as present image, the detection image frame is the figure using default gray scale display target pixel to insertion monitoring image frame
Picture.
8. the method according to any one of claim 1-3, it is characterised in that the driving current of the detection object pixel it
Afterwards, also include：
The driving current of the object pixel is compared with threshold value, determining if less than threshold value need to carry out voltage compensation.
9. a kind of display, it is characterised in that include：
Detection module, in the starting time of the display, detecting the driving current of object pixel；
First determining module, for according to the present drive voltage of each object pixel, the driving current and default
Threshold voltage determines the voltage compensation value of the object pixel；
Compensating module, for carrying out voltage compensation according to the voltage compensation value of the object pixel；
The display also includes：
Second determining module, for obtaining the display in can carry out the line number of voltage compensation value acquisition；It is described to carry out electricity
Voltage compensation value of the line number for needed for the often row pixel according to the display that pressure offset is obtained obtains time and described
What the starting time of display drew；
Second determining module, is additionally operable to according to the line number for carrying out voltage compensation value acquisition, in the display bag
Target line is determined in each row for containing, the pixel in the target line is the object pixel.
10. display according to claim 9, it is characterised in that second determining module, specifically for：
Using the line number for carrying out voltage compensation value acquisition as multiple pixel column groups, each pixel column group includes multiple pixels
OK；
The pixel column of same position is used as the target line in selecting per group.
11. display according to claim 10, it is characterised in that the compensating module, specifically for：
The target line in for pixel column group each described, using the voltage compensation value of object pixel each described to described
Object pixel carries out voltage compensation；
For the non-targeted row in pixel column group each described, mended using the voltage of each object pixel in the target line
Repay value carries out voltage compensation to the corresponding pixel in position in the non-targeted row.
12. display according to any one of claim 9-11, it is characterised in that the detection module, specifically for：
It is determined that each target line in, obtain detection two adjacent target row object pixels driving current initial time it
Between time interval, the time interval is according to the voltage compensation value needed for often row pixel to obtain the time and per two field picture
What refresh time determined.
13. display according to any one of claim 9-11, it is characterised in that it is right that each time of the display starts institute
The target line answered is different.
14. display according to claim 13, it is characterised in that also include：
Logging modle, the target line being currently up for record in the time.
15. display according to any one of claim 9-11, it is characterised in that also include：
Insertion module, for inserting monitoring image frame as present image, the detection image frame is aobvious using default gray scale
Show the image of object pixel.
16. display according to any one of claim 9-11, it is characterised in that first determining module, are additionally operable to
The driving current of the object pixel is compared with threshold value, determining if less than threshold value need to carry out voltage compensation.
17. a kind of display, it is characterised in that include：
Memorizer, for storage program；
Processor, for performing the program of the memory storage, performs following operation：
In the starting time of display, the driving current of object pixel is detected；
Present drive voltage, the driving current and default threshold voltage according to each object pixel determines the mesh
The voltage compensation value of mark pixel；
Voltage compensation is carried out according to the voltage compensation value of the object pixel；
The processor, was additionally operable to before the driving current of the detection object pixel, performed following operation：
Obtaining can carry out the line number of voltage compensation value acquisition in the display；The line number for carrying out voltage compensation value acquisition
Voltage compensation value for needed for the often row pixel according to the display obtains the time and the starting time of the display is obtained
Go out；According to the line number for carrying out voltage compensation value acquisition, target line is determined in each row that the display is included, institute
It is the object pixel to state the pixel in target line；
Display screen, for the display image under the driving of the driving current.
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| CN105224004B (en) * | 2015-09-22 | 2017-04-05 | 京东方科技集团股份有限公司 | A kind of method and current detecting chip of adjustment voltage |
| CN105139790B (en) * | 2015-10-09 | 2018-04-24 | 青岛海信电器股份有限公司 | OLED shows aging method for detecting and display device |
| CN105206217B (en) * | 2015-10-27 | 2018-02-06 | 京东方科技集团股份有限公司 | display processing method, device and display device |
| CN105825812B (en) * | 2016-03-31 | 2018-01-23 | 广东欧珀移动通信有限公司 | The method and device that a kind of pixel ageing is determined and pixel is called |
| CN105788531A (en) * | 2016-05-20 | 2016-07-20 | 深圳市华星光电技术有限公司 | Driving circuit of OLED (Organic Light Emitting Diode) display panel |
| CN106875883B (en) * | 2016-12-28 | 2021-01-08 | 深圳天珑无线科技有限公司 | Method and system for controlling display of display panel |
| CN107342041B (en) * | 2017-08-29 | 2019-07-23 | 西安交通大学 | A kind of OLED shows the ameliorative way of non-uniform phenomenon |
| CN109658880B (en) * | 2017-10-12 | 2021-10-08 | 咸阳彩虹光电科技有限公司 | Pixel compensation method, pixel compensation circuit and display |
| CN107799069B (en) * | 2017-11-17 | 2019-08-30 | 京东方科技集团股份有限公司 | Pixel compensation system, drive system and method, time-sequence control module, device |
| CN109949757B (en) * | 2017-12-21 | 2022-03-11 | 咸阳彩虹光电科技有限公司 | Scanning signal compensation method, scanning signal compensation circuit and display |
| CN108492766B (en) * | 2018-01-19 | 2020-02-07 | 昆山国显光电有限公司 | Compensation voltage calculation method and device, compensation method and system and driving chip |
| CN108022546B (en) * | 2018-01-24 | 2022-11-15 | 合肥京东方显示技术有限公司 | Signal compensation method, device and system, source electrode driving chip and storage medium |
| CN109147672B (en) * | 2018-08-28 | 2020-09-15 | 武汉天马微电子有限公司 | Compensation control method for display panel, display panel and display device |
| CN109377945B (en) | 2018-11-08 | 2021-01-22 | 京东方科技集团股份有限公司 | Pixel compensation method, device and system |
| CN109545143B (en) * | 2019-01-24 | 2020-08-07 | 京东方科技集团股份有限公司 | Display panel and compensation method thereof |
| JP7038684B2 (en) * | 2019-08-01 | 2022-03-18 | Ｔｖｓ Ｒｅｇｚａ株式会社 | Image display device and image processing method |
| CN111063295B (en) * | 2019-12-31 | 2021-05-07 | 深圳市华星光电半导体显示技术有限公司 | Driving device and driving method of light emitting diode array panel |
| CN112150978A (en) * | 2020-09-16 | 2020-12-29 | 惠科股份有限公司 | Signal compensation system and signal compensation method |
| CN112562565B (en) * | 2020-12-07 | 2023-06-20 | 北京集创北方科技股份有限公司 | Driving device and method, display panel and electronic equipment |
| CN112908252B (en) * | 2021-01-26 | 2022-08-23 | 合肥维信诺科技有限公司 | Display device and compensation method of display panel |
| CN112927647B (en) * | 2021-02-02 | 2023-04-07 | 深圳市华星光电半导体显示技术有限公司 | Display device and driving method thereof |
| CN112951161B (en) * | 2021-02-24 | 2023-04-28 | 厦门天马微电子有限公司 | Display panel driving method and display device |
| CN114038400A (en) * | 2021-10-21 | 2022-02-11 | 重庆康佳光电技术研究院有限公司 | Light emitting diode driving circuit and method, display panel and driving method thereof |
| CN114267312B (en) * | 2021-12-30 | 2023-02-17 | 北京奕斯伟计算技术股份有限公司 | Afterimage optimization circuit and method |
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Address after: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266100 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |