CN105528993A - Method and device for adjusting pixel of OLED display - Google Patents

Method and device for adjusting pixel of OLED display Download PDF

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Publication number
CN105528993A
CN105528993A CN201610085677.9A CN201610085677A CN105528993A CN 105528993 A CN105528993 A CN 105528993A CN 201610085677 A CN201610085677 A CN 201610085677A CN 105528993 A CN105528993 A CN 105528993A
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pixel
pattern
pixels
oled display
display
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CN105528993B (en
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路林
曹建伟
刘卫东
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Hisense Visual Technology Co Ltd
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Qingdao Hisense Electronics Co Ltd
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • G09G3/3208Control 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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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention discloses a method and a device for adjusting pixels of an OLED displayer. The method comprises the steps of: detecting a current value of each pixel point of the OLED displayer; determining display positions of scotoma pixels in the OLED displayer according to the detected current values; determining related pixel patterns of the scotoma pixels from a pixel pattern set, wherein the distance between the display position of each pixel pattern in the pixel pattern set and the display position of the corresponding scotoma pixel meets the preset distance; and raising a display gray level of at least one of related pixels (forming the related pixel patterns) in the OLED displayer so as to compensate for the brightness of the scotoma pixels.

Description

A kind of method and device adjusting OLED display pixel
The application is the denomination of invention proposed on November 08th, 2013 is the divisional application of the Chinese invention patent application 201310553505.6 of " a kind of method and device adjusting OLED display pixel ".
Technical field
The present invention relates to electronic technology field, particularly a kind of method and device adjusting OLED display pixel.
Background technology
At present, the OLED(OrganicLight-EmittingDiode prepared by organic material, Organic Light Emitting Diode) the display fast response time, the visual angle that show because of autoluminescence be wide, separately can be curled, folding or as the part of wearable computer, therefore have application widely in the good portable product of display effect and the military special dimension that waits.
Principle of luminosity and common inorganic light emitting diode (LED) the device principle of luminosity of OLED are similar, namely deposit very thin organic material between two electrodes, pass to direct current make it luminous to this luminous organic material.OLED display can be divided into two classes from technology path, light emission direction: PMOLED(PassivematrixOrganicLight-EmittingDiode, passive matrix organic light emitting diode (AMOLED) panel) OLED display and AMOLED(ActiveMatrixOrganicLight-EmittingDiode, active matrix organic light-emitting diode (AMOLED) panel) OLED display two kinds, both difference are the type of drive of image element circuit, but, the no matter OLED display of which kind of type, all at least forms redness, blueness and green three sub-pixels when showing.
OLED display (particularly large scale OLEDTV display), because of jejune reasons such as volume production equipment, material, batch production techniques, yield is lower, through full framely lighting, storing, after high temperature, high humidity and a series of aging technique such as hot and humid, many display defects all will come out, such as, go here and there up and down, the defect such as bright spot and dim spot.Go here and there up and down, the defect such as bright spot and dim spot may such as particle(Chinese be explained: particulate because organic function layer be mixed into foreign matter) cause.Under normal circumstances, OLED industry generally adopts different laser repair methods to eliminate or repairs segmental defect, thus improves the process rate of OLED display.Namely at foreign matter part or its circumfusion laser, cut off the leakage current having foreign matter to cause, eliminate the display defect of this pixel.But after reparation, OLED display can stay many idle stains or dim spot, and dim spot is more, full frame defect when lighting is more obvious, and how many stain or dim spots will directly affect the display quality of final OLED display.
Such as, if in OLED display three sub-pixels have one for bright spot or dim spot time, not only can cause full frame obvious display defect when lighting (namely all in OLED display pixels enter work), and when synthesize white light, this subpixel area will have obvious misalignment, thus make the actual displayed deleterious of OLED display.If the bright spot in OLED display or dim spot too many, will directly affect the display quality of OLED display.
Technical scheme not about " how to weaken/or the dim spot display defect that reduces after laser repairing " in prior art.
Therefore, the technical matters of prior art is: can not weaken in prior art/or reduce the dim spot display defect after laser repairing.
Summary of the invention
The invention provides a kind of method and the device that adjust OLED display pixel, in order to solve exist in prior art can not weaken/or reduce the technical matters of the dim spot display defect after laser repairing.
On the one hand, the present invention, by an embodiment of the application, provides following technical scheme:
Adjust a method for OLED display pixel, comprising: the current value detecting each pixel of described OLED display; According to the described current value detected, determine the display position of the dim spot pixel in described OLED display; Concentrate the related pixel pattern determining described dim spot pixel from pattern of pixels, wherein, described pattern of pixels concentrates the distance between the display position of the display position of each pattern of pixels and described dim spot pixel to meet preset distance; The display gray scale of at least one related pixel formed in the described OLED display of described related pixel pattern is heightened, to compensate the gray scale of described dim spot pixel.
On the other hand, the present invention is provided by another embodiment of the application:
Adjust a device for OLED display pixel, comprising: detecting unit, for detecting the current value of each pixel of described OLED display; First determining unit, for the current value detected described in basis, determines the display position of the dim spot pixel in described OLED display; Second determining unit, for concentrating the related pixel pattern determining described dim spot pixel from pattern of pixels, wherein, described pattern of pixels concentrates the display position of each pattern of pixels, and the distance between the display position of described dim spot pixel meets preset distance; Adjustment unit, for heightening the display gray scale of at least one related pixel formed in the described OLED display of described related pixel pattern, to compensate the gray scale of described dim spot pixel.
One or more technical schemes in technique scheme, have following technique effect or advantage:
In the technical program, when there being dim spot pixel to exist, just concentrating from pattern of pixels and determining the related pixel pattern relevant with dim spot pixel, then the display gray scale of at least one related pixel formed in the OLED display of related pixel pattern is heightened.The benefit done like this it is possible to use related pixel pattern to do grey level compensation, weakening/or reduce the harmful effect that dim spot pixel itself brings.
Accompanying drawing explanation
Fig. 1 is the procedure figure adjusting pixel in the embodiment of the present application;
Fig. 2 is the curent change schematic diagram of OLED display bright spot and DSD dark spot defect in the embodiment of the present application;
Fig. 3 A-Fig. 3 F is the schematic diagram of related pixel pattern in the embodiment of the present application;
Fig. 4 is the relation schematic diagram of dim spot pixel and related pixel pattern in the embodiment of the present application;
Fig. 5 is the device schematic diagram adjusting pixel in the embodiment of the present application.
Embodiment
In order to solve exist in prior art can not weaken/or reduce the technical matters of the dim spot display defect after laser repairing, the embodiment of the present invention proposes a kind of method and the device that adjust OLED display pixel, below by accompanying drawing and specific embodiment, technical solution of the present invention is described in detail, the specific features being to be understood that in the embodiment of the present invention and embodiment is the detailed description to technical solution of the present invention, instead of the restriction to technical solution of the present invention, when not conflicting, technical characteristic in the embodiment of the present invention and embodiment can combine mutually.
Embodiment one:
In the embodiment of the present application, a kind of method adjusting OLED display pixel is proposed.
Please refer to Fig. 1 below, concrete implementation process is as follows:
S101, detects the current value of each pixel of OLED display.
S102, according to the current value detected, determines the display position of the dim spot pixel in OLED display.
S103, concentrates the related pixel pattern determining dim spot pixel from pattern of pixels.
Wherein, pattern of pixels concentrates the display position of each pattern of pixels, and the distance between the display position of dim spot pixel meets preset distance.
S104, heightens the display gray scale of at least one related pixel formed in the OLED display of related pixel pattern, to compensate the gray scale of dim spot pixel.
Introduce concrete implementation process below.
Method in the embodiment of the present invention is applicable to OLED display.Although OLED display has done laser repairing, OLED display can leave many idle stains or dim spot, therefore, after OLED display carries out laser repairing, detect the current value of each pixel of OLED display.
Because when the full frame work of OLED display, display brightness is comparatively even, by the electric current of pixel each in OLED display relatively.Thus, just can detect this pixel of pixel by " whether the current value detecting each pixel in OLED display has greatly changed " and whether there is defect.
And the defect of OLED display mainly contains two aspects, i.e. fleck defect and DSD dark spot defect.Fleck defect causes by there is bright spot pixel in OLED display, if there is continuous multiple bright spot pixel in addition, then can form bright line; DSD dark spot defect causes by there is dim spot pixel in OLED display, if there is continuous multiple dim spot pixel, then can form concealed wire.
On the other hand, because pixel each in OLED display is made up of red sub-pixel, blue subpixels, green sub-pixels three; Or be made up of red sub-pixel, blue subpixels, green sub-pixels, white sub-pixels.Therefore, fleck defect or DSD dark spot defect show as in itself: form the sub-pixel defect of bright spot pixel or the sub-pixel defect of dim spot pixel.For DSD dark spot defect, if the red sub-pixel formed in certain pixel of OLED display is damaged, so this pixel would not have red sub-pixel luminous, and the brightness of pixel and colourity will be partially dark, and cause current anomaly, become dim spot pixel.If white sub-pixels does not work, situation is more obvious.If for fleck defect, if the white sub-pixels luminosity formed in certain pixel of OLED display is too high, so the display brightness of this pixel apparently higher than the pixel of surrounding, can become bright spot pixel.
Certainly, bright spot pixel can change dim spot pixel into, and dim spot pixel mainly can obtain from two aspects, and one is formed by bright spot pixel transition.Two is obtain by detecting.
Before execution S102 step, first can detect and obtain bright spot pixel, process is as follows:
First, by the current value detected, obtain the bright spot pixel of OLED display.
Then, control bright spot pixel to quit work, to change dim spot pixel into.
When detecting the electric current by each pixel, implement particular by periodic operation watchdog routine.Concrete, this watchdog routine is integrated with hardware and software.Be made into an automatic control module, be placed on TCON or complete machine mainboard and call operation by the mode (periodic operation, such as half a year is one-period etc.) of time triggered.
And due to the electric current of each pixel comparatively close, therefore having one represents that current value normal current threshold scope, such as 3mA ~ 5mA(are only limitted to citing, lower with), if exceed this scope by the electric current of certain pixel, so then represent this pixel defectiveness.
Further, judge that this picture element flaw is that the step of bright spot pixel is then as follows:
Regularly compared in OLED display by the current value of each pixel and predetermined current threshold scope.If when having the mxm. of current value higher than current threshold scope, then determine that higher than the pixel that the current value of mxm. is corresponding be bright spot pixel.
Suppose that current threshold scope is 3mA ~ 5mA, so then the current value of each pixel by OLED display can be compared with it, if having the current value of certain pixel higher than 5mA, illustrate that this pixel light emission is abnormal, and can determine that this pixel is bright spot pixel.
Further, owing to being use the mode of " point by point scanning " to scan when detecting each pixel in OLED display, namely mode from top to bottom, from left to right scans, therefore, if certain pixel occurs abnormal, the position of this abnormal pixel can be known further.
And after detecting that certain pixel is bright spot pixel, can control bright spot pixel quits work, it is made to change dim spot pixel into.
In addition, the detailed process detecting dim spot pixel in S102 is as follows:
Regularly compared in OLED display by the current value of each pixel and predetermined current threshold scope.If when having the minimum of the current value of pixel lower than current threshold scope in OLED display, then pixel corresponding for the current value lower than minimum is defined as dim spot pixel.Then the position of dim spot pixel is recorded.
Suppose that current threshold scope is 3mA ~ 5mA, if the current value so detecting certain pixel is lower than 3mA, so then can determine that this pixel is dim spot pixel.Detect the display position of dim spot pixel and above-mentioned similar, do not repeat them here.
Certainly, except current threshold scope, certain current value determined also can be used as normal value, and use this normal value to judge bright spot pixel and dim spot pixel further.Under request in person referring specifically to Fig. 2.
Fig. 2 is the curent change schematic diagram of OLED display bright spot and DSD dark spot defect.
Wherein, A represents normal current value.If have current value higher than normal value, so the pixel of its correspondence is bright spot pixel.If have current value lower than normal value, so the pixel of its correspondence is dim spot pixel.
After the position determining dim spot pixel, then can perform the step in S103.
In the specific implementation process of S103, pattern of pixels is concentrated has multiple pattern of pixels, such as, several pattern of pixels in Fig. 3 A-Fig. 3 F.
For Fig. 3 A, in figure, black region is dim spot pixel; The pattern that white portion is formed is the one of pattern of pixels; And gray area is normal pixel.
And the distance wherein between the display position of each pattern of pixels and the display position of dim spot pixel meets preset distance, preset distance specifically please refer to Fig. 4.
Stain in Fig. 4 is dim spot pixel, suppose that preset distance is the distance apart from this dim spot pixel two pixels, the distance of the virtual row frame so in Fig. 4 is then preset distance, and being in the pattern that the pixel (pixel namely in white portion) within this preset distance forms can as related pixel pattern.
Further, how to determine related pixel pattern, then there is mode below:
The first, concentrate the priority orders of pattern of pixels according to pattern of pixels, determine that pattern of pixels that priority is the highest is as related pixel pattern.
In concrete implementation process, the pattern of pixels that pattern of pixels is concentrated has priority orders, such as, pattern of pixels in Fig. 3 A-Fig. 3 F, is be numbered according to the order of priority.Namely the priority of Fig. 3 A is the highest, and the priority of Fig. 3 F is minimum.
Now determine according to priority orders, then Fig. 3 A can be defined as related pixel pattern.
The second, control the pattern of pixels concentrated of pattern of pixels in the mode of poll, according to prefixed time interval successively as related pixel pattern.
In concrete implementation process, prefixed time interval is assumed to be 5 seconds, so concentrates in pattern pixel, in the mode of poll, within every 5 seconds, can determine that a pattern of pixels is as related pixel pattern.
In the process determined, according to the priority of pattern of pixels, within every 5 seconds, a related pixel pattern can be determined.Also within every 5 seconds, can determine that a pattern of pixels is as related pixel pattern at random from pattern of pixels is concentrated.
Way like this, in the process lightening related pixel pattern, then can avoid adjusting the problem that some related pixel patterns cause pixel ageing, damage, can extend the serviceable life of OLED display.
Further, after determining related pixel pattern, then can perform the step in S104.
In concrete implementation process, with the related pixel pattern citing in Fig. 3 A, in the process of adjustment gray scale, with reference to the display gray scale originally of the pixel in related pixel pattern, the display gray scale of at least one pixel in related pixel pattern can be heightened.
Such as, in Fig. 3 A, related pixel pattern includes two pixels, and when it normally shows, gray shade scale is all 128, so when adjusting display gray scale, the display gray scale of one of them pixel can be adjusted to 144; Or the display gray scale of two pixels is adjusted to 144 simultaneously.
In general, display gray scale during the normal work originally of dim spot pixel, and the pixel display gray scale before adjustment in related pixel pattern is similar.Now adjust the display gray scale of pixel in related pixel pattern, can adjust based on " display gray scale during the normal work originally of dim spot pixel ", also can adjust based on " display gray scale before adjustment of the pixel in related pixel pattern ".
Certainly, in a practical situation, display gray scale when dim spot pixel normally works, and the pixel display gray scale before adjustment in related pixel pattern also can have larger difference.Now adjust the display gray scale of pixel in related pixel pattern, can adjust based on " display gray scale before adjustment of the pixel in related pixel pattern ".
Concrete, when set and display gray scale, adjust according to display level, the pixel value difference of a grade is 16.
It should be noted that, according to difference 16 to be adjusted to preferred embodiment, the present invention also can set other values.
In general, the display gray scale of at least one related pixel of related pixel pattern, at least higher than the gray scale of normal pixel display one is arrived Three Estate.
Further, the gray shade scale of each pixel adjustment in related pixel pattern can not be identical, and the display gray scale of the pixel compensation point namely set can be different.The display gray scale of such as, a pixel in Fig. 3 A can be set to 144, and the display gray scale of one other pixel can be set to 160.
More specifically, due in OLED display, each pixel can be made up of red, blue and green three sub-pixels; Or red, blue, green and white four sub-pixels are formed.So when adjusting the pixel of surrounding, can adjust targetedly based on the defect of sub-pixel.
Example is configured to red, blue, green and white four sub-pixels.
If the red sub-pixel display in certain pixel is abnormal, and then causes this pixel to be dim spot pixel, so in the process of adjustment related pixel pattern, then can adjusts the red sub-pixel in related pixel pattern at least one pixel, its display gray scale is heightened.
And when if white sub-pixels display in certain pixel is abnormal, except the adjustment mode above similar, can also according to the display characteristic of true color mode, when white sub-pixels display is abnormal, white sub-pixels does not work, now heighten the display gray scale of other three sub-pixels, compensate in the mode simulating white sub-pixels luminescence.
Specifically, namely true color mode is OLED colorize mode, specifically comprises RGB(redness, green, blueness) three-colour light-emitting structure and look mapped structure (white light+colored filter).
In above-mentioned implementation process, when there being dim spot pixel to exist, just concentrating from pattern of pixels and determining the related pixel pattern relevant with dim spot pixel, then the display gray scale of at least one related pixel formed in the OLED display of related pixel pattern is heightened.The benefit done like this it is possible to use related pixel pattern to do grey level compensation, weakening/or reduce the harmful effect that dim spot pixel itself brings.
In addition, said method is also applicable to bright line (multiple continuous bright spot pixel composition) and concealed wire (being made up of multiple continuous dim spot pixel), by setting the pixel compensation point (namely adjusting the pixel of display gray scale in related pixel pattern) of higher gray scale up and down at concealed wire, the harmful effect of concealed wire can be alleviated.
Further, after being heightened by the display gray scale of at least one related pixel formed in the OLED display of related pixel pattern, also there is step below: the driving frequency of at least one related pixel formed in the OLED display of related pixel pattern heightened.
If OLED display certain pixel when showing tableaux has DSD dark spot defect, after the display gray scale of " at least one related pixel in the OLED display of related pixel pattern " (i.e. the pixel compensation point) by its correspondence is heightened, the driving frequency of pixel compensation point can also be increased, pixel compensation point is increased at the display number of times of identical time, be used for compensating the collimation error that dim spot pixel causes to user, make the viewing effect of user better.
If OLED display certain pixel when showing dynamic menu has DSD dark spot defect, the driving frequency that can set pixel compensation point becomes multiple to increase, namely the driving frequency of pixel compensation point is the multiple of DSD dark spot defect driving frequency, to compensate the collimation error that dim spot pixel causes to user, make the viewing effect of user better.
Based on same inventive concept, the following examples introduce a kind of device adjusting OLED display pixel.
Embodiment two:
In the embodiment of the present application, a kind of device adjusting OLED display pixel is described.
Concrete, please refer to Fig. 5 below, this device comprises:
Detecting unit 501, for detecting the current value of each pixel of described OLED display;
First determining unit 502, for the current value detected described in basis, determines the display position of the dim spot pixel in described OLED display;
Second determining unit 503, for concentrating the related pixel pattern determining dim spot pixel from pattern of pixels, wherein, pattern of pixels concentrates the display position of each pattern of pixels, and the distance between the display position of dim spot pixel meets preset distance;
Adjustment unit 504, for heightening the display gray scale of at least one related pixel formed in the OLED display of related pixel pattern, to compensate the gray scale of described dim spot pixel.
Further, device also comprises:
Obtaining unit, for the current value by detecting, obtaining the bright spot pixel of OLED display;
Converting unit, quits work for controlling bright spot pixel, to change dim spot pixel into.
Further, each pattern of pixels that pattern of pixels is concentrated is set with priority orders, second determining unit 503 is concrete also for concentrating the priority orders of pattern of pixels according to pattern of pixels, determines that pattern of pixels that priority is the highest is as related pixel pattern.
Further, the second determining unit 503 is concrete also for controlling pattern of pixels that pattern of pixels concentrates in the mode of poll, according to prefixed time interval successively as related pixel pattern.
By one or more embodiment of the present invention, following technique effect can be realized:
In the present embodiment, when there being dim spot pixel to exist, just concentrating from pattern of pixels and determining the related pixel pattern relevant with dim spot pixel, then the display gray scale of at least one related pixel formed in the OLED display of related pixel pattern is heightened.The benefit done like this it is possible to use related pixel pattern to do grey level compensation, weakening/or reduce the harmful effect that dim spot pixel itself brings.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (4)

1. adjust a method for OLED display pixel, it is characterized in that, comprising:
The display position of the dim spot pixel in described OLED display is determined according to detection current value;
Concentrate the related pixel pattern determining described dim spot pixel from pattern of pixels, wherein, described pattern of pixels concentrates the distance between the display position of the display position of each pattern of pixels and described dim spot pixel to meet preset distance;
The driving frequency of at least one related pixel formed in the described OLED display of described related pixel pattern is heightened, to compensate the gray scale of described dim spot pixel.
2. the method for claim 1, is characterized in that, before the display position of the described dim spot pixel determined in described OLED display, specifically comprises:
By the described current value detected, obtain the bright spot pixel of described OLED display;
Control described bright spot pixel to quit work, to change described dim spot pixel into.
3. the method for claim 1, is characterized in that, the current value detected described in described basis, determines the display position of the dim spot pixel in described OLED display, specifically comprises:
Regularly compared in described OLED display by the current value of each pixel and predetermined current threshold scope;
Pixel corresponding for current value lower than described minimum is defined as described dim spot pixel;
Record the position of described dim spot pixel.
4. the method as described in claim arbitrary in claim 1-3, is characterized in that, describedly concentrates the related pixel pattern determining described dim spot pixel from pattern of pixels, is specially:
Control pattern of pixels that described pattern of pixels concentrates in the mode of poll, according to prefixed time interval successively as described related pixel pattern.
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