CN106128358B - The driving method of display panel, the drive system of display panel and its display device - Google Patents
The driving method of display panel, the drive system of display panel and its display device Download PDFInfo
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- CN106128358B CN106128358B CN201610799061.8A CN201610799061A CN106128358B CN 106128358 B CN106128358 B CN 106128358B CN 201610799061 A CN201610799061 A CN 201610799061A CN 106128358 B CN106128358 B CN 106128358B
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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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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Abstract
The invention belongs to field of display technology, are related to the driving method of display panel, the drive system of display panel and its display device.The driving method of the display panel is comprising steps of obtain offset voltage of the object pixel under certain brightness；From the self compensation moment, by the driving voltage of the data voltage of object pixel and the object pixel under corresponding brightness with the sum of the offset voltage of reference voltage as object pixel；Wherein, object pixel is obtained in the offset voltage under certain brightness comprising steps of benchmark pixel is in the corresponding reference voltage of a certain brightness in setting display panel；Obtain brightness and the corresponding data voltage of object pixel in display panel；The voltage difference of the reference voltage of the data voltage and benchmark pixel of object pixel under same brightness is calculated, voltage difference is offset voltage.The present invention can guarantee that entire display panel can obtain identical brightness by offset voltage under conditions of data drive circuit inputs identical data voltage, keep the consistency of display panel brightness.
Description
Technical field
The invention belongs to field of display technology, and in particular to the drive system of the driving method of display panel, display panel
And its display device.
Background technique
OLED (Organic Light-Emitting Diode: Organic Light Emitting Diode) is a kind of novel photophore
Part has many advantages, such as that driving current is small, low in energy consumption, the service life is long.With the development of display technology, OLED has been gradually applied to display
In product.
With the promotion of OLED display panel pixel resolution (Pixel Per Inch, abbreviation PPI), under certain size
The quantity of pixel is more and more, Pixel Dimensions are smaller and smaller.It is as shown in Figure 1 the structure of OLED display panel in the prior art
Schematic diagram, under the conditions of the display area of display panel is fixed-size, the quantity of pixel 2 therein is more, size is smaller, point
Resolution is higher.In view of the limitation of pixel space, the complicated driving circuit of design can not be corresponded for each OLED pixel, if but
Only there are two thin film transistor (TFT) and the pixel-driving circuits of a storage capacitance (abbreviation 2T1C) for the simple tool of design, although knot
Structure is simple, but due in entire display panel OLED pixel and its corresponding driving circuit inevitably have differences,
Leading to driving thin film transistor (TFT), there are threshold voltage shifts.Due to the voltage drift of thin film transistor (TFT), multiple and different pixels,
Even if the driving voltage inputted to thin film transistor (TFT) is identical, the brightness that OLED pixel is shown may not also be identical.Without threshold voltage
The driving circuit of drift compensation, threshold voltage shift will lead to the uneven of display panel display brightness, further cause display
It is ineffective.
As it can be seen that for high-resolution OLED display panel, how in limited Pixel Dimensions to realize luminance compensation, obtain
Obtaining preferable display effect becomes a technical problem to be solved urgently.
Summary of the invention
The technical problem to be solved by the present invention is to aiming at the above shortcomings existing in the prior art, provide a kind of display surface
The driving method of plate, the drive system of display panel and its display device, the driving method of the display panel at least partly solve
The problem of realizing luminance compensation in limited Pixel Dimensions, obtain preferable display effect.
The driving method that technical solution used by present invention problem is the display panel is solved, comprising steps of
Obtain offset voltage of the object pixel under certain brightness；
From the self compensation moment, by the data voltage of the object pixel and the object pixel under corresponding brightness with base
Driving voltage of the sum of the described offset voltage of quasi- voltage as the object pixel；
Wherein, obtain offset voltage of the object pixel under certain brightness comprising steps of
Benchmark pixel is set in the display panel in the corresponding reference voltage of a certain brightness；
Obtain the brightness of object pixel and corresponding data voltage in the display panel；
Calculate the voltage of the data voltage of the object pixel and the reference voltage of the benchmark pixel under same brightness
Difference, the voltage difference are the offset voltage.
Preferably, the display panel is divided into multiple display areas, any of multiple described display areas are
Benchmark display area, pixel described at least one of described benchmark display area are the benchmark pixel, the benchmark pixel
It is the reference voltage in the corresponding data voltage of a certain brightness；
The pixel in other described display areas in addition to the benchmark display area is the object pixel.
Preferably, the display panel is divided into m*n display area, all institutes in the benchmark display area
Stating pixel is the benchmark pixel, and multiple benchmark pixels are the base in the average value of the corresponding data voltage of a certain brightness
Quasi- voltage.
Preferably, setting in the display panel benchmark pixel in the corresponding reference voltage of a certain brightness includes: to obtain
Data voltage under different brightness of the benchmark pixel in grey-scale range is formed under different brightness as reference voltage
Reference voltage-brightness mapping table.
Preferably, benchmark pixel is surveyed before the corresponding reference voltage of a certain brightness in setting the display panel
The benchmark pixel corresponding data voltage under a certain brightness is measured, the data electricity of the benchmark pixel under same brightness is calculated
It is poor with the correction voltage of normal voltage to press, will be described in the conduct of the sum of normal voltage of the correction voltage difference and the benchmark pixel
Reference voltage.
Preferably, the compensation moment is in the opening initialization stage of the display panel or in a certain of display process
Moment.
A kind of drive system of display panel, the display panel include multiple pixels, including setup unit, acquisition list
Member, computing unit and output unit, in which:
The setup unit is connect with the computing unit, for setting and saving benchmark pixel in the display panel
In the corresponding reference voltage of a certain brightness, and it is transmitted to the computing unit；
The acquiring unit is connect with the computing unit, for obtaining the brightness of object pixel in the display panel
With corresponding data voltage, and it is transmitted to the computing unit；
The computing unit, for calculating and being stored in the data voltage of the object pixel and the base under same brightness
The voltage difference of the reference voltage of quasi- pixel；
The output unit is connect with the computing unit and the acquiring unit, will be described from the self compensation moment
The data voltage of the data voltage of object pixel and the object pixel under corresponding brightness with the voltage difference of reference voltage it
With the driving voltage as the object pixel.
It preferably, further include region deviding unit, the region deviding unit is for the display panel to be divided into
Multiple display areas, and any of multiple described display areas are defined as benchmark display area, the benchmark display area
At least one of described in pixel be the benchmark pixel, the benchmark pixel is described in the corresponding data voltage of a certain brightness
Reference voltage；
The pixel in other described display areas in addition to the benchmark display area is the object pixel.
Preferably, the display panel is divided into m*n display area, all described in the benchmark display area
Pixel is the benchmark pixel, and all benchmark pixels are the benchmark in the average value of the corresponding data voltage of a certain brightness
Voltage.
Preferably, the setup unit includes that the first light obtains module, the first data acquisition module and configuration module,
In:
First light obtains module, connect with the configuration module, is at least correspondingly arranged with a benchmark pixel,
For obtaining different brightness of the benchmark pixel in grey-scale range；
First data acquisition module, connect with the configuration module, for obtaining the benchmark pixel in grayscale model
Enclose the reference voltage under interior different brightness；
The configuration module, for receive first light obtain module brightness and first data acquisition module
Reference voltage, the reference voltage formed under different brightness-brightness mapping table are simultaneously stored.
Preferably, the acquiring unit includes that the second light obtains module and the second data acquisition module, in which:
Second light obtains module, is at least correspondingly arranged with an object pixel, for obtaining the target picture
The brightness of element；
Second data acquisition module, connect with the data drive circuit of the display panel, a certain bright for obtaining
The data voltage of the object pixel under degree.
Preferably, further include correction unit, connect with the setup unit, the correction unit is for described in the setting
It is right under a certain brightness to measure the benchmark pixel before the corresponding reference voltage of a certain brightness for benchmark pixel in display panel
The data voltage answered calculates the correction of the normal voltage of the data voltage and normal brightness of the benchmark pixel under same brightness
Voltage difference regard the sum of data voltage of the correction voltage difference and the benchmark pixel as the reference voltage.
A kind of display device, the drive system including above-mentioned display panel.
The beneficial effects of the present invention are: the driving method and its drive system of the display panel, from driving voltage adjust into
Hand compensates the overall brightness of display panel, so that the driving electricity of the OLED pixel of destination display area finally entered
Pressure is its data voltage and contains the sum of voltage difference of systematical difference, guarantees that entire display panel is inputted in data drive circuit
Identical brightness can be obtained by offset voltage under conditions of identical data voltage, keep the consistency of display panel brightness,
To realize luminance compensation of the OLED display panel to unit area pixel of high PPI, and do not limited by pixel space
Improve display effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of display panel in the prior art；
Fig. 2 is the flow chart of the driving method of display panel in the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram of display panel in the embodiment of the present invention 1；
Fig. 4 is the structural block diagram of the drive system of display panel in the embodiment of the present invention 1；
Fig. 5 is the operation principle schematic diagram of display panel in the embodiment of the present invention 1；
Fig. 6 is the brightness using the driving method of brightness display effect and the prior art after driving method shown in Fig. 2
Display effect comparison；
Fig. 7 is the flow chart of the driving method of display panel in the embodiment of the present invention 2；
Fig. 8 is the structural block diagram of the drive system of display panel in the embodiment of the present invention 2；
Fig. 9 is the operation principle schematic diagram of display panel in the embodiment of the present invention 2；
In appended drawing reference:
1- substrate；2- pixel；20- sub-pixel；3- light sensitive device；
11- benchmark display area；12- destination display area；
21- setup unit；22- acquiring unit；23- computing unit；24- output unit；25- corrects unit.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Formula is to the invention shows the drive systems of the driving method of panel, display panel and its display device to be described in further detail.
Technical concept of the invention is: using some region of pixel of display panel as benchmark pixel, with the benchmark
The brightness of pixel on the basis of corresponding reference voltage, with identical input voltage signal by offset voltage obtain same brightness be
Purpose, will contain that luminance difference caused by the systematical difference of pixel is counter to be shifted on the driving voltage to pixel, to display panel
Other regions (or further comprising benchmark display area) in addition to benchmark display area pixel carry out voltage compensation, disappear
Except between different pixels because of different threshold voltage shift bring luminance differences, to when inputting identical voltage to each pixel
Identical brightness can be obtained by offset voltage.
Embodiment 1:
The present embodiment provides a kind of driving methods of OLED display panel, start with from driving voltage adjusting to display panel
Overall brightness compensate so that the driving voltage of the OLED pixel of destination display area finally entered be its data voltage
With contain the sum of the voltage difference of systematical difference, guarantee that entire display panel inputs identical data voltage in data drive circuit
Under conditions of identical brightness can be obtained by offset voltage, the consistency of display panel brightness is kept, to realize high PP I
OLED display panel to the luminance compensation of unit area pixel, and do not limited by pixel space and display effect can be improved.
The display area of the OLED display panel includes multiple OLED pixels, by showing on the basis of dividing display area
Region and destination display area, and light sensitive device is set in benchmark display area corresponding position；Detect benchmark display area
The brightness of OLED pixel and the OLED pixel brightness of destination display area and corresponding data voltage, calculate base under same brightness
The reference voltage of quasi- pixel and the corresponding voltage difference of the data voltage of object pixel；Then, by the voltage difference from compensating the moment
It compensates on data voltage (Data) signal of the OLED pixel of destination display area.From being considered locally, detection can also be passed through
The luminance difference of unit destination display area and benchmark display area obtains the voltage difference of corresponding brightness, and the voltage difference is compensated
Onto the data voltage signal of unit destination display area pixel, to realize the benefit of the brightness of destination display area OLED pixel
It repays.
The driving method of the display panel, comprising steps of obtaining offset voltage of the object pixel under certain brightness；It is self-complementary
Repay and rise constantly, by the data voltage of the object pixel and the object pixel under corresponding brightness with the voltage of reference voltage
The driving voltage of the sum of poor (i.e. offset voltage) as the object pixel.Wherein, object pixel is obtained under certain brightness
Offset voltage has various ways.
As shown in Fig. 2, the driving method of the display panel comprising steps of
Step S1): benchmark pixel is in the corresponding reference voltage of a certain brightness in setting display panel.
In this step, display panel is divided into multiple display areas, is shown on the basis of any of multiple display areas
Show region, at least one pixel in benchmark display area is benchmark pixel, and benchmark pixel is in the corresponding data electricity of a certain brightness
Pressure is benchmark voltage；The pixel in other display areas in addition to benchmark display area is object pixel.That is, by certain pixel
The corresponding data voltage of certain luminance can be obtained as reference voltage, so that entire display panel Voltage Reference having the same
Basis.
As shown in figure 3, display panel includes multiple pixels 2 between two substrates 1, each pixel 2 is to have extremely
One cell cube of few three primary color sub-pixels 20, is additionally provided with light sensitive device 3, benchmark display area 11 in the light-emitting surface of pixel 2
Pixel be benchmark pixel, the pixel in destination display area 12 is object pixel.It is easily understood that benchmark pixel be with
An at least cell cube of three primary color sub-pixels, by distinguishing the different display areas of same display panel, when setting target picture
On the basis of the brightness of benchmark pixel, the reference voltage of benchmark pixel and the adjusting voltage of object pixel are same aobvious for the brightness of element
Show panel voltage, finally makes the brightness of each pixel of same display panel that there is preferable consistency.
Preferably, display panel can be divided into m*n display area, all pixels in benchmark display area are
Benchmark pixel, multiple benchmark pixels are benchmark voltage in the average value of the corresponding data voltage of a certain brightness.For example, can will show
The first row~second row for showing panel, first row~secondary series section display area are as benchmark display area, wherein in phase
With multiple pixels of brightness data voltage average value as reference voltage.Here, average value passes through in benchmark display area
The voltage differences of multiple pixel intensities, which averagely optimize, obtains and is set as reference voltage, to obtain ideal brightness references
Benchmark, and then compensated in the data voltage auxiliary voltage difference of the pixel of destination display area.
Alternatively, two benchmark viewing areas can also be arranged in the proximal end of the signal input of a destination display area and distal end
Domain, calculates separately out in two benchmark display areas that benchmark pixel is in the corresponding data voltage difference of a certain brightness, with ladder alternation
Mode or other operation modes carry out driving voltage compensation to the object pixel of destination display area.Here proximal end feeling the pulse with the finger-tip mark is aobvious
Show the most proximal end of range data signal and grid signal input in region；Distally refer in destination display area range data signal and
The distalmost end of grid signal input.Certainly, it is only for a kind of specific selection mode of benchmark pixel and reference voltage, can also be adopted
With the set-up mode of other benchmark pixels and reference voltage, here without limitation.
A kind of more efficient mode is to set in display panel benchmark pixel in the corresponding reference voltage of a certain brightness
Include: the data voltage under different brightness of the acquisition benchmark pixel in grey-scale range as reference voltage, and is formed different bright
Reference voltage-brightness mapping table under degree.Under normal conditions, can form grayscale includes that (display is white by L0 (showing black state)-L255
State) reference voltage-brightness mapping table, establish an intuitive mapping table and be stored in advance, can be further improved data search
Speed and reduction power consumption.
Step S2): obtain brightness and the corresponding data voltage of object pixel in display panel.
In this step, the brightness that object pixel is obtained by light sensitive device is shown in data drive circuit to target
The pixel in region obtains object pixel corresponding data voltage when exporting luma data.Here light sensitive device can in pixel
Each sub-pixel is correspondingly arranged, also some sub-pixel of space set in pixel, is constituted each of gray-scale intensity to obtain
Monochromatic brightness.Data voltage refers to pixel without voltage compensation, will be transmitted to of directly acquiring from data drive circuit
The voltage signal of pixel.For to a certain extent, the reference voltage of not calibrated benchmark pixel is also the one of data voltage
Kind form.
Step S3): calculate the voltage of the reference voltage of the data voltage and benchmark pixel of object pixel under same brightness
Difference.
For the consistency for guaranteeing brightness, the luminance difference of luminance compensation and corresponding voltage difference are set in same grayscale,
I.e. entirely the pixel in display picture is under determining a certain brightness conditions, to the data voltage of the same brightness of the display originally
Adjusting, to solve the problems, such as pixel system threshold drift.In this step, it is looked by the data voltage of the object pixel of acquisition
The brightness for finding corresponding benchmark pixel further calculates the benchmark of the data voltage of object pixel and benchmark pixel under the brightness
The voltage difference of voltage, i.e. Δ V=VData-VBenchmark, which is offset voltage.
Above step S1)-step S3), the system deviation of the measurement of the system deviation of substantially each pixel, each pixel is corresponding
Voltage difference can as setting reference voltage form pixel-voltage difference mapping table, i.e., by each object pixel and its should
Voltage difference of the object pixel under a certain brightness forms pixel-voltage difference mapping table, to accelerate the processing speed of display panel, drop
Low drive circuit power consumption.In this way, from the unjustified data voltage that driving circuit exports, until issuing each sub- picture of brightness
Element, wherein since reality output brightness (result) caused by due to there may be system thresholds offset has been contemplated, by bright
Degree difference is back-calculated to obtain voltage difference, during subsequent display, with this voltage difference to the number of the threshold shift of pixel (reason)
It is adjusted according to voltage source, and then realizes the compensation for calibrating errors deviated to pixel threshold, guarantee display panel in identical data
Identical brightness is obtained under voltage conditions, keeps brightness uniformity.
Step S4): from the self compensation moment, by the data voltage of object pixel and the object pixel under corresponding brightness with base
The sum of voltage difference (i.e. offset voltage) of quasi- voltage is as the corresponding driving voltage of object pixel in display panel.
In this step, the sum of voltage difference and the data voltage of object pixel of the object pixel of system deviation will be contemplated
As the corresponding driving voltage of object pixel, i.e. the driving voltage of object pixel finally entered is data voltage and voltage difference
With.Wherein, the data voltage of object pixel can be obtained by light sensitive device identical with step S2).
For the pixel of display panel, there may be the adjustings of the driving voltage of luminance deviation, can set certain opportunity
As the starting point for compensating adjusting.Compensation opportunity can be, in the opening initialization stage of display panel, to set display panel
Middle benchmark pixel is in the corresponding reference voltage of a certain brightness；Or a certain moment in display process, the electricity of the preceding pixel of synthesis
The corresponding relationship that pressure input show with brightness, in setting display panel benchmark pixel in the corresponding reference voltage of a certain brightness, and
By the sum of voltage difference and data voltage as the corresponding driving electricity of the object pixel in display panel during subsequent display
Pressure.It is easily understood that in different compensation opportunity sections, due to the difference of system Accumulated deviation, pixel-voltage difference mapping table
It can be with dynamic change for different data.
Under normal conditions, when booting or display during certain interval of time be arranged single compensation opportunity, can obtain compared with
Good compensation effect, and it is avoided that the lookup of frequent reference voltage and voltage difference calculate to keep alap power consumption.
Certainly, the compensation opportunity of driving voltage can also carry out different settings according to the concrete condition of display panel, not limit here
It is fixed.
Correspondingly, as shown in figure 4, the present embodiment also provides a kind of drive system of display panel, including setup unit 21,
Acquiring unit 22, computing unit 23 and output unit 24, in which:
Setup unit 21 is connect with computing unit 23, for setting and saving in display panel benchmark pixel a certain bright
Corresponding reference voltage is spent, and is transmitted to computing unit 23；
Acquiring unit 22 is connect with computing unit 23, for obtain in display panel the brightness of object pixel with it is corresponding
Data voltage, and it is transmitted to computing unit 23；
Computing unit 23, for calculating and being stored in the base of the data voltage of object pixel and benchmark pixel under same brightness
The voltage difference of quasi- voltage；
Output unit 24 is connect with computing unit 23 and acquiring unit 22, from the self compensation moment, by object pixel
The data voltage of data voltage and the object pixel is used as object pixel with the sum of the voltage difference of reference voltage under corresponding brightness
Driving voltage.
The drive system of the display panel is equivalent in original data driving chip to being integrated with a benefit between pixel
Repay function, by preset reference voltage and calculate include corresponding system deviation voltage difference, target will be finally entered
The driving voltage of pixel be set as data voltage and voltage difference and, identical data voltage in same display panel is obtained
Identical brightness is obtained, to keep the consistency of display panel brightness.
Preferably, the drive system of the display panel further includes region deviding unit, and region deviding unit will be for that will show
Show that panel is divided into multiple display areas, any of multiple display areas are defined as benchmark display area, benchmark display area
In at least one pixel be benchmark pixel, benchmark pixel the corresponding data voltage of a certain brightness be benchmark voltage；Except benchmark
The pixel in other display areas except display area is object pixel.By the different viewing areas for distinguishing same display panel
Domain, when the brightness of setting object pixel is on the basis of the brightness of benchmark pixel, the reference voltage of benchmark pixel and object pixel
Offset voltage is to refer to same reference voltage, finally makes brightness of each pixel of same display panel under identical data voltage
It is identical.
Preferably, display panel can be divided into m*n display area, all pixels in benchmark display area are
Benchmark pixel, multiple benchmark pixels are benchmark voltage in the average value of the corresponding data voltage of a certain brightness.Corresponding display area
Subregion, the settable one or more light sensitive devices in each display area.
Select a certain display area for benchmark display area, the number that benchmark display area actual displayed brightness value is inputted with it
Closest according to the corresponding brightness value of voltage, the region removed outside benchmark display area in display panel is destination display area.
For example, the first row of display panel~second row, first row~secondary series section display area can be shown as benchmark
Region, wherein the average value of the data voltage of multiple pixels with same brightness is as reference voltage.Here, average value passes through
The voltage differences of multiple pixel intensities, which averagely optimize, in benchmark display area obtains and is set as reference voltage, and then aobvious in target
Show the data voltage additional electrical pressure difference of the pixel in region to compensate, to obtain ideal brightness references benchmark.When
So, it is only for a kind of specific selection mode of benchmark pixel and reference voltage, it can also be using other benchmark pixels and benchmark
The set-up mode of voltage, here without limitation.
Setup unit 21 includes the first acquisition module, the first data acquisition module and configuration module, in which: the first light obtains
Module is connect with configuration module, is at least correspondingly arranged with a benchmark pixel, for obtaining benchmark pixel in grey-scale range
Different brightness；First data acquisition module, connect with configuration module, bright for obtaining difference of the benchmark pixel in grey-scale range
Reference voltage under degree；Configuration module obtains the brightness of module and the benchmark of the first data acquisition module for receiving the first light
Voltage, the reference voltage formed under different brightness-brightness mapping table are simultaneously stored.By setup unit 21, ash can be formed
Rank includes reference voltage-brightness mapping table of L0-L255, establishes an intuitive mapping table and is stored in advance, can further mention
High data search speed and reduction power consumption.
Acquiring unit 22 includes that the second light obtains module and the second data acquisition module, in which: and the second light obtains module,
It is at least correspondingly arranged with an object pixel, also some sub-pixel of space set in object pixel, for obtaining target
The brightness of pixel；Second data acquisition module is connect with the data drive circuit of display panel, for obtaining under a certain brightness
The data voltage of object pixel.Module and the second data acquisition module are obtained by the second light, object pixel can be obtained respectively
Brightness and data voltage, establish database to search luminance difference between object pixel and benchmark pixel and comparison voltage difference,
Voltage difference for succeeding target pixel provides compensation basis.
Wherein, it can be light-sensitive device that the first light, which obtains module and the second light acquisition module,.
Under the driving method of above-mentioned display panel and its corresponding drive system, as shown in figure 5, the display panel is in work
Include offset voltage establishment stage and voltage compensation stage during making:
In Fig. 5 (A), in object pixel offset voltage establishment stage: the benchmark pixel irradiation of benchmark display area is corresponding
Benchmark light sensitive device (i.e. the first light obtains module), benchmark light sensitive device obtains the brightness value L 1 of benchmark pixel, drives reference image
The data voltage that element obtains brightness value L 1 is benchmark voltage V；Object pixel irradiates corresponding target light sensitive device, and (i.e. the second light obtains
Modulus block), adjust the input voltage (i.e. data voltage) of object pixel so that object pixel show shown with benchmark pixel it is same
The corresponding data voltage of brightness L1, object pixel brightness L1 is V1, to obtain the offset voltage Δ V=V1-V of object pixel.
In Fig. 5 (B), after enabling luminance compensation set-up function (i.e. from the compensation moment), that is, enter the voltage compensation stage:
During real-time display, the data voltage of object pixel is added into offset voltage Δ V, thus by Δ V feedback to object pixel
Data voltage compensates object pixel relative datum pixel in the data voltage difference of same brightness, to realize the bright of OLED pixel
Degree compensation, so that display panel obtains consistent display brightness under the conditions of identical data voltage.
It is easily understood that when with display panel use the time growth, when the performance change of each pixel cause include
When the voltage difference variation of system deviation, rule can be established according to above-mentioned offset voltage and establish new reference voltage-brightness and reflected
Firing table and corresponding object pixel-voltage difference mapping table, so that the brightness of all pixels remains preferable in display panel
Consistency.
The driving method of above-mentioned display panel and its corresponding drive system are applicable not only to the display panel of bi-directional display,
It is also applied for the display panel unidirectionally shown.
Fig. 6 shows the driving of brightness display effect ((A) in Fig. 6) and the prior art of the display panel of the driving method
The brightness display effect ((B) in Fig. 6) of the display panel of method compares, it is seen that using the brightness of the display panel of the driving method
More evenly, luminance compensation can be realized in effective Pixel Dimensions, obtain preferable display effect.
The driving method of the display panel of the present embodiment and its corresponding drive system, by corresponding in the display area OLED
Light sensitive device is arranged in position, detects the brightness of benchmark display area OLED pixel and the brightness of destination display area OLED pixel,
Corresponding voltage difference is obtained by luminance difference, the voltage difference (such as light sensitive device do average value to unit area brightness) is mended
It repays in the data voltage signal of destination display area, the compensation of destination display area brightness is realized, to realize high-resolution
The luminance compensation of OLED display device improves display effect, realizes the luminance compensation of high PPI OLED display device.
Embodiment 2:
The present embodiment provides a kind of driving methods of OLED display panel, the difference from embodiment 1 is that, the present embodiment
The driving method of display panel is corrected reference voltage yet further still according to normal voltage-normal brightness, so that benchmark is electric
Pressure-Benchmark brightness correspondence is more preferable, so that the brightness of entire display panel is closer than normal brightness, improves the view of spectators
Feel experience.
As shown in fig. 7, still further comprising step S0 on the basis of the driving method of the display panel of embodiment 1): it is right
The reference voltage compensation of benchmark pixel, i.e., setting display panel in benchmark pixel the corresponding reference voltage of a certain brightness it
Before, measuring basis pixel corresponding data voltage under a certain brightness, calculate under same brightness the data voltage of benchmark pixel with
The correction voltage of normal voltage is poor；Correspondingly, step S1) setting display panel in benchmark pixel in the corresponding benchmark of a certain brightness
When voltage, it regard the sum of normal voltage of correction voltage difference and benchmark pixel as reference voltage.Here according to normal voltage-standard
Brightness (i.e. Gama curve), first correction reference pixel become normal voltage in the corresponding reference voltage of a certain brightness, protect
The standardization of benchmark pixel, reference voltage is demonstrate,proved, and then guarantees the reference voltage of benchmark pixel to the voltage compensation of object pixel
Accuracy.
Correspondingly, compared with Example 1, as shown in figure 8, the drive system of display panel is removed including setup unit 21, is obtained
It takes outside unit 22, computing unit 23 and output unit 24, further includes correction unit 25, correction unit 25 and setup unit 21 connect
Connect, for setting display panel in benchmark pixel before the corresponding reference voltage of a certain brightness, measuring basis pixel is at certain
Corresponding data voltage under one brightness calculates the normal voltage of the data voltage of benchmark pixel and normal brightness under same brightness
Correction voltage it is poor (i.e. rectification building-out voltage), by the sum of data voltage of correction voltage difference and benchmark pixel as benchmark electricity
Pressure.According to normal voltage-normal brightness, correction reference pixel first guarantees reference image in the corresponding reference voltage of a certain brightness
The standardization of element, reference voltage, to guarantee the accuracy of the reference voltage of benchmark pixel to the voltage compensation of object pixel.
Under the driving method of above-mentioned display panel and its corresponding drive system, as shown in figure 9, the display panel is in work
Include reference voltage compensation stage, offset voltage establishment stage and voltage compensation stage during making:
In Fig. 9 (A), in the reference voltage compensation stage: it is corresponding that benchmark display area inputs such as brightness L255 (white state)
Standard voltage value VL255, the benchmark pixel of benchmark display area irradiates corresponding benchmark light sensitive device, and (i.e. the first light obtains mould
Block), benchmark light sensitive device obtains the brightness value L A of benchmark pixel, to the data voltage of the benchmark pixel of benchmark display area into
Row rectification building-out voltage Δ V ' obtains reference voltage V so that reference area pixel brightness value is L255Benchmark=VL255+ΔV'；
In Fig. 9 (B), in object pixel offset voltage establishment stage: after the benchmark pixel input correction of benchmark display area
Reference voltage V, reference area irradiates corresponding benchmark light sensitive device (i.e. the first light obtains module), and benchmark light sensitive device obtains
The brightness value L 1 of benchmark pixel, object pixel irradiate corresponding target light sensitive device (i.e. the second light obtains module), adjust target
The input voltage (i.e. data voltage) of pixel, so that object pixel, which is shown, shows same brightness L1, object pixel with benchmark pixel
The corresponding data voltage of brightness L1 is V2, to obtain the offset voltage Δ V=V2-V of object pixel.
In Fig. 9 (C), after enabling luminance compensation set-up function, that is, enter the voltage compensation stage: by the data of benchmark pixel
Voltage adds rectification building-out voltage Δ V ', is corrected compensation to benchmark pixel；By the data voltage of object pixel plus compensation
Voltage Δ V, so that the data voltage of Δ V feedback to object pixel is compensated object pixel relative datum pixel in same brightness
Voltage difference, to realize the luminance compensation of OLED pixel, display panel obtains consistent under the conditions of identical data voltage
Display brightness.
The driving method of the display panel of the present embodiment and its corresponding drive system, are further shown by correction reference
The brightness of the benchmark pixel in region and the difference of normal brightness under conditions of benchmark pixel obtains normal brightness, and then compensate
The display brightness of the OLED pixel of target pixel region so that display panel brightness is more evenly, and more meets the vision of human eye
System brightness.
Embodiment 3:
The present embodiment provides a kind of display device, the drive system including the display panel in embodiment 1- embodiment 2.
The display device can be Electronic Paper, mobile phone, tablet computer, television set, display, laptop, digital phase
Any products or components having a display function such as frame, navigator.
The display device has preferable display effect.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (13)
1. a kind of driving method of display panel, which is characterized in that comprising steps of
Obtain offset voltage of the object pixel under certain brightness；
It is from the self compensation moment, the data voltage of the object pixel and the object pixel is electric with benchmark under corresponding brightness
Driving voltage of the sum of the described offset voltage of pressure as the object pixel；
Wherein, obtain offset voltage of the object pixel under certain brightness comprising steps of
Benchmark pixel is set in the display panel in the corresponding reference voltage of a certain brightness；
Obtain the brightness of object pixel and corresponding data voltage in the display panel；
Calculate the voltage difference of the data voltage of the object pixel and the reference voltage of the benchmark pixel under same brightness, institute
Stating voltage difference is the offset voltage.
2. the driving method of display panel according to claim 1, which is characterized in that be divided into the display panel more
A display area, any of multiple described display areas are benchmark display area, at least one in the benchmark display area
A pixel is the benchmark pixel, and the benchmark pixel is the reference voltage in the corresponding data voltage of a certain brightness；
The pixel in other described display areas in addition to the benchmark display area is the object pixel.
3. the driving method of display panel according to claim 2, which is characterized in that the display panel is divided into m*
N display area, all pixels in the benchmark display area are the benchmark pixel, and multiple benchmark pixels exist
The average value of the corresponding data voltage of a certain brightness is the reference voltage.
4. the driving method of display panel according to claim 1, which is characterized in that set benchmark in the display panel
Pixel includes: the number obtained under different brightness of the benchmark pixel in grey-scale range in the corresponding reference voltage of a certain brightness
According to voltage as reference voltage, and form the reference voltage under different brightness-brightness mapping table.
5. the driving method of display panel according to claim 1-4, which is characterized in that setting the display
It is corresponding under a certain brightness to measure the benchmark pixel before the corresponding reference voltage of a certain brightness for benchmark pixel in panel
Data voltage, the calculating data voltage of the benchmark pixel and correction voltage of normal voltage under same brightness is poor, will be described
The sum of normal voltage of correction voltage difference and the benchmark pixel is used as the reference voltage.
6. the driving method of display panel according to claim 1-4, which is characterized in that the compensation moment is in institute
State the opening initialization stage of display panel or a certain moment in display process.
7. a kind of drive system of display panel, the display panel includes multiple pixels, which is characterized in that single including setting
Member, acquiring unit, computing unit and output unit, in which:
The setup unit is connect with the computing unit, for setting and saving in the display panel benchmark pixel at certain
The corresponding reference voltage of one brightness, and it is transmitted to the computing unit；
The acquiring unit is connect with the computing unit, for obtain in the display panel brightness of object pixel with it is right
The data voltage answered, and it is transmitted to the computing unit；
The computing unit, for calculating and being stored in the data voltage of the object pixel and the reference image under same brightness
The voltage difference of the reference voltage of element；
The output unit is connect with the computing unit and the acquiring unit, from the self compensation moment, by the target
The data voltage of the data voltage of pixel and the object pixel is made under corresponding brightness with the sum of the voltage difference of reference voltage
For the driving voltage of the object pixel.
8. the drive system of display panel according to claim 7, which is characterized in that further include region deviding unit, institute
Region deviding unit is stated for the display panel to be divided into multiple display areas, and will be any in multiple display areas
A to define as benchmark display area, pixel described at least one of described benchmark display area is the benchmark pixel, described
Benchmark pixel is the reference voltage in the corresponding data voltage of a certain brightness；
The pixel in other described display areas in addition to the benchmark display area is the object pixel.
9. the drive system of display panel according to claim 8, which is characterized in that the display panel is divided into m*n
A display area, all pixels in the benchmark display area are the benchmark pixel, and all benchmark pixels exist
The average value of the corresponding data voltage of a certain brightness is the reference voltage.
10. the drive system of display panel according to claim 7, which is characterized in that the setup unit includes first
Light obtains module, the first data acquisition module and configuration module, in which:
First light obtains module, connect with the configuration module, is at least correspondingly arranged, is used for a benchmark pixel
Obtain different brightness of the benchmark pixel in grey-scale range；
First data acquisition module, connect with the configuration module, for obtaining the benchmark pixel in grey-scale range
Different brightness under reference voltage；
The configuration module obtains the brightness of module and the benchmark of first data acquisition module for receiving first light
Voltage, the reference voltage formed under different brightness-brightness mapping table are simultaneously stored.
11. the drive system of display panel according to claim 7, which is characterized in that the acquiring unit includes second
Light obtains module and the second data acquisition module, in which:
Second light obtains module, is at least correspondingly arranged with an object pixel, for obtaining the object pixel
Brightness；
Second data acquisition module, connect with the data drive circuit of the display panel, for obtaining under a certain brightness
The object pixel data voltage.
12. according to the drive system of the described in any item display panels of claim 7-11, which is characterized in that further include that correction is single
Member is connect with the setup unit, and the correction unit is used in setting the display panel benchmark pixel in a certain brightness
Before corresponding reference voltage, the benchmark pixel corresponding data voltage under a certain brightness is measured, is calculated in same brightness
Under the benchmark pixel data voltage and normal brightness normal voltage correction voltage it is poor, by correction voltage difference and institute
It states the sum of data voltage of benchmark pixel and is used as the reference voltage.
13. a kind of display device, which is characterized in that the driving system including the described in any item display panels of claim 7-12
System.
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Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106782430B (en) * | 2017-01-17 | 2019-05-07 | 上海天马有机发光显示技术有限公司 | A kind of display panel brightness adjusting method and system |
| CN106782306B (en) * | 2017-01-24 | 2019-06-11 | 上海天马有机发光显示技术有限公司 | A kind of brightness adjusting method and brightness control system of OLED display panel |
| CN106887212A (en) | 2017-03-28 | 2017-06-23 | 京东方科技集团股份有限公司 | A kind of OLED display and its brightness adjusting method |
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| CN109658864B (en) * | 2018-12-27 | 2020-07-24 | 厦门天马微电子有限公司 | Display panel display processing method and display processing device |
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| CN111554238A (en) * | 2019-02-12 | 2020-08-18 | 陕西坤同半导体科技有限公司 | Brightness compensation method for organic light emitting diode display panel |
| CN109903733B (en) * | 2019-04-11 | 2021-03-05 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| WO2020215305A1 (en) * | 2019-04-26 | 2020-10-29 | 深圳市柔宇科技有限公司 | Display panel and compensation method therefor |
| CN110890065B (en) * | 2019-11-01 | 2021-04-27 | 深圳市华星光电半导体显示技术有限公司 | Control method and control device of display panel |
| US11550068B2 (en) | 2020-08-29 | 2023-01-10 | Google Llc | Modeling mutable environmental structures |
| CN116614915B (en) * | 2023-07-21 | 2023-10-20 | 深圳爱图仕创新科技股份有限公司 | Lamp voltage calibration method, control method, electronic equipment and storage medium |
| CN117079617B (en) * | 2023-10-12 | 2024-02-13 | 惠科股份有限公司 | Brightness adjusting method for display panel and display panel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044541A (en) * | 2004-10-22 | 2007-09-26 | 阿德文泰克全球有限公司 | System and method for setting brightness uniformity in an active-matrix organic light-emitting diode (oled) flat-panel display |
| CN102855842A (en) * | 2012-09-04 | 2013-01-02 | 京东方科技集团股份有限公司 | Method and device for displaying and controlling images |
| CN104505043A (en) * | 2014-12-29 | 2015-04-08 | 厦门天马微电子有限公司 | Method and device for gray scale compensation of image data |
| CN105096834A (en) * | 2015-08-26 | 2015-11-25 | 京东方科技集团股份有限公司 | Active-matrix organic light-emitting diode (AMOLED) display apparatus and brightness compensation method thereof |
| CN105741812A (en) * | 2016-05-10 | 2016-07-06 | 京东方科技集团股份有限公司 | Display method of liquid crystal displayer, liquid crystal displayer and display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1158483A3 (en) * | 2000-05-24 | 2003-02-05 | Eastman Kodak Company | Solid-state display with reference pixel |
-
2016
- 2016-08-31 CN CN201610799061.8A patent/CN106128358B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044541A (en) * | 2004-10-22 | 2007-09-26 | 阿德文泰克全球有限公司 | System and method for setting brightness uniformity in an active-matrix organic light-emitting diode (oled) flat-panel display |
| CN102855842A (en) * | 2012-09-04 | 2013-01-02 | 京东方科技集团股份有限公司 | Method and device for displaying and controlling images |
| CN104505043A (en) * | 2014-12-29 | 2015-04-08 | 厦门天马微电子有限公司 | Method and device for gray scale compensation of image data |
| CN105096834A (en) * | 2015-08-26 | 2015-11-25 | 京东方科技集团股份有限公司 | Active-matrix organic light-emitting diode (AMOLED) display apparatus and brightness compensation method thereof |
| CN105741812A (en) * | 2016-05-10 | 2016-07-06 | 京东方科技集团股份有限公司 | Display method of liquid crystal displayer, liquid crystal displayer and display device |
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