CN108074525B - Driving method, display panel and the display device of pixel circuit - Google Patents
Driving method, display panel and the display device of pixel circuit Download PDFInfo
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- CN108074525B CN108074525B CN201610997051.5A CN201610997051A CN108074525B CN 108074525 B CN108074525 B CN 108074525B CN 201610997051 A CN201610997051 A CN 201610997051A CN 108074525 B CN108074525 B CN 108074525B
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- pixel
- repetitive unit
- hertz
- driving method
- pixel circuit
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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]
- G09G3/3225—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] using an active matrix
Abstract
The present invention provides the driving method, display panel and display device of a kind of pixel circuit, the pixel circuit is divided into multiple repetitive units, it is the picture of 2X hertz of two frame by X hertz of a frame of picture decomposition, in the first frame time, first part's pixel in repetitive unit normally shows that second part pixel shows reference color；In the second frame time, the second part pixel in repetitive unit is normally shown, first part's pixel shows reference color；First part's pixel is arranged alternately in the repetitive unit with second part pixel, so that adjacent pixel alternately displays normal color and reference color, to achieve the effect that reduce laser annealing unevenness, the final display effect for improving display device.
Description
Technical field
The present invention relates to flat panel display technology fields, and in particular to a kind of driving method of pixel circuit, display and aobvious
Showing device.
Background technique
Active matrix organic light-emitting diode (Active Matrix Organic Light Emitting Diode, letter
Claim AMOLED) show it is a kind of display technology applied in TV and mobile device, with its low-power consumption, low cost, large scale
The characteristics of had broad application prospects in the portable electronic device to sensitive power consumption.
Organic Light Emitting Diode (Organic Light Emitting Diode, abbreviation OLED) in AMOLED can be sent out
Light is that the driving current generated by thin film transistor (TFT) (Thin Film Transistor, abbreviation TFT) drives.Thin film transistor (TFT)
Polycrystalline SiTFT and amorphous silicon film transistor can be divided into, polycrystalline SiTFT mainly includes high temperature polysilicon
(HTPS) thin film transistor (TFT) and two kinds of products of low temperature polycrystalline silicon (LTPS) thin film transistor (TFT).Low-temperature polysilicon film is due to its atom
Queueing discipline, carrier mobility is high, and driving current with higher can be accelerated the reaction time of liquid crystal molecule, reduces film
The volume of transistor increases the transmission area in pixel unit, and display device is made to have higher brightness and resolution ratio, therefore,
LTPS film preparation active layer is widely used in the manufacture craft of thin film transistor (TFT).
But AMOLED use LTPS film, due to manufacturing process uniformity the problems such as, will cause panel TFT everywhere
Threshold value is uneven, to will affect the display effect of panel, especially will cause and shows unevenness (ELA caused by laser annealing
Mura), abbreviation laser annealing is uneven.
Although can be mended using compensation circuits such as 7T1C (7 TFT, 1 capacitors) to drive transistor threshold voltage
It repays, but then has nothing in common with each other because of the level difference that manufacturing process, driver' s timing adjust for the compensation effect of mobility.It is existing
It is main by improving manufacturing process ability in technology, to improve driving transistor mobility uniformity；Or use external compensation
Method, screen body ELA mura is compensated, but its improvement is limited.
Therefore, how to reduce laser annealing unevenness, the display effect for improving display device is that those skilled in the art need
The technical issues of solution.
Summary of the invention
The purpose of the present invention is to provide a kind of driving method of pixel circuit, display panel and display devices, can subtract
Small laser annealing is uneven, improves the display effect of display device.
To achieve the above object, the present invention provides a kind of driving method of pixel circuit, for solving laser annealing unevenness,
It is the picture of 2X hertz of two frame by X hertz of a frame of picture decomposition it is characterized in that, pixel array is divided into multiple repetitive units
Face, in the first frame time, first part's pixel in repetitive unit is normally shown, second part pixel shows reference color；
In the second frame time, the second part pixel in repetitive unit is normally shown, first part's pixel shows reference color；Its
In, first part's pixel is arranged alternately in the repetitive unit with second part pixel, and X is whole between 0~120
Number.
Optionally, 60 X.
Optionally, the line number of pixel is determined by the size and pel spacing of the laser annealing unevenness in the repetitive unit
It is fixed.
Optionally, in the repetitive unit line number of pixel by laser annealing unevenness size in a column direction divided by pixel
Spacing, round numbers obtain；The columns of pixel is less than or equal to line number in the repetitive unit.
Optionally, the repetitive unit includes Liang Ge first part pixel and two second part pixels, and described first
Partial pixel and second part pixel correspond.
Optionally, the reference color is black, red, green or blue.
Correspondingly, being driven the present invention also provides a kind of display panel using the driving method of above-mentioned pixel circuit.
Correspondingly, the present invention also provides a kind of display devices, comprising: digital analog converter, frequency doubling system and above-mentioned aobvious
Show panel；One external data signal is converted to the analog signal of the X hertz normally shown in the digital analog converter；The X is conspicuous
Analog signal hereby is converted to 2X hertz of analog signal by the frequency doubling system；It is input to the display panel, carries out phase
The display answered；Wherein, X is the integer between 0~120.
Optionally, 60 X.
Optionally, the frequency doubling system also provides reference signal to the display panel.
Compared with prior art, the driving method of pixel circuit provided by the invention, display panel and display device, by institute
It states pixel circuit and is divided into multiple repetitive units, be the picture of 2X hertz of two frame by X hertz of a frame of picture decomposition, in first frame
In, first part's pixel in repetitive unit is normally shown, second part pixel shows reference color；In the second frame time
Interior, the second part pixel in repetitive unit is normally shown, first part's pixel shows reference color；First part's pixel
It is arranged alternately in the repetitive unit with second part pixel, so that adjacent pixel alternately displays normal color and refers to face
Color, to achieve the effect that reduce laser annealing unevenness, the final display effect for improving display device.
Detailed description of the invention
Fig. 1 is the pixel unit array schematic diagram on the substrate of AMOLED display panel in the prior art；
Fig. 2 is pixel unit array schematic diagram provided by the embodiment of the present invention one；
Fig. 3 is repetitive unit schematic diagram provided by the embodiment of the present invention one；
Fig. 4 is the structural block diagram of display device provided by the embodiment of the present invention three.
Specific embodiment
To keep the contents of the present invention more clear and easy to understand, below in conjunction with Figure of description, the contents of the present invention are done into one
Walk explanation.Certainly the invention is not limited to the specific embodiment, and general replacement well known to those skilled in the art is also contained
Lid is within the scope of the present invention.
Secondly, the present invention has carried out detailed statement using schematic diagram, in detail that example of the present invention, for the ease of saying
Bright, schematic diagram is not partially enlarged in proportion to the general scale, should not be to this as restriction of the invention.
Referring to FIG. 1, it is the pixel unit array schematic diagram on the substrate of AMOLED display panel in the prior art.Such as
Shown in Fig. 1, the pixel unit array 10 on the substrate is made of multiple pixels 11, the pixel 11 by multi-strip scanning line (Gn-1,
Gn, Gn+1 ...) and multiple data lines (Dn-1, Dn, Dn+1 ...) intersection restriction.The pixel be usually be colored display and
The three primary colors (such as R, G, B) of use, each pixel are correspondingly connected with scan line (gate) and a data line (source).Scanning
The waveform that line is sent out sequentially opens the thin film transistor (TFT) (TFT) in the pixel of every a line, allows the data line of entire row by one well
The display point of full line is charged to respectively required voltage, to show different grayscale.When this line is charged, scan line is just
Voltage is closed, then the scan line of next line just opens voltage, then the display by identical row data line to next line
Point carries out charge and discharge, so sequentially goes down, when the display point for last line of having substituted the bad for the good, just and back fills since the first row is again
Electricity.
For the display of a 1080*RGB*1920FHD resolution ratio, the scan line of a total of 1920 row, with 60 hertz
Hereby for the renewal frequency of (Hz), the display time of each picture is about 1/60=16.67ms, since the group of picture becomes 1920
Capable gate line, so the switch time for distributing to each gate line is about 16.67ms/1920=8.68us.So gate
The waveform of line is width is 8.68us one by one waveform, sequentially opens the TFT of every a line, and this 8.68us when
In, show electrode charge and discharge to required voltage are shown into corresponding grayscale via data line.
As stated in the background art, the existing AMOLED display device using LTPS film is moved back in the presence of more serious laser
Fiery uneven problem, inventor propose a kind of driving of new pixel circuit by the research of the driving method to pixel circuit
Method, and display panel and display device using the driving method.
[embodiment one]
The present invention provides a kind of driving method of pixel circuit, and pixel array 100 is divided for multiple repetitive units 110, institute
Stating repetitive unit 110 includes first part's pixel 112 and second part pixel 114, first part's pixel 112 and second
Point pixel 114 is arranged alternately in the repetitive unit 110, as shown in Figure 2；It is two frame 2X by X hertz of a frame of picture decomposition
The picture of hertz, in the first frame time, first part's pixel 112 in repetitive unit 110 is normally shown, second part pixel
114 display reference colors；In the second frame time, the second part pixel 114 in repetitive unit is normally shown, first part's picture
Element 112 shows reference color.
X is the integer between 0~120, such as X is 30,60,90 or 100, it is preferred that X 60, i.e., by 60 hertz of a frame
Picture decomposition be 120 hertz of two frame picture.
The line number of pixel is determined by the size and pel spacing of the laser annealing unevenness in the repetitive unit 110,
The laser annealing is not to be parallel to the strip unevenness of gate line, and the size of laser annealing unevenness in a column direction is divided by pixel
Spacing, round numbers obtain the line number of pixel.For example, the size of the laser annealing unevenness in a column direction is 0.2mm, between pixel
It is 50um away from (pitch), then the line number of pixel is 4 rows in the repetitive unit 110.The column of pixel in the repetitive unit 110
Number is less than or equal to line number.
Preferably, the repetitive unit 110 includes Liang Ge first part pixel 112 and two second part pixels 114, and
First part's pixel 112 is corresponded with second part pixel 114.In Fig. 2, pixel in the repetitive unit 110
Line number is 4 rows, and the columns of pixel is 4 column.First part's pixel 112 is two rows two column, the second part pixel
It is two rows two column.In other embodiments, the line number of pixel or columns can be different in different first part's pixels, example
Such as: when the line number of pixel is that 5 rows 4 arrange in the repetitive unit 110, first part's pixel is 3 rows 2 column, another first
Partial pixel is 2 rows 2 column, as shown in Figure 3；Likewise, different second part pixel indulges the line number of pixel or columns can also be with
Difference is equally 5 rows 4 column in the case of the line number of pixel in the repetitive unit 110, and a second part pixel is 3 rows 2 column,
Another second part pixel is 2 rows 2 column.That is, in the repetitive unit 110, first part's pixel 112 and second
The number of partial pixel 114 is identical, and first part's pixel 112 and the second part pixel 114 correspond.
The present invention passes through the picture by 60 hertz of a frame of picture decomposition for 120 hertz of two frame, in the first frame time, weight
First part's pixel in multiple unit normally shows that second part pixel shows reference color；In the second frame time, repeat single
Second part pixel in member normally shows that first part's pixel shows reference color；First part's pixel with second
Point pixel is arranged alternately in the repetitive unit, so that adjacent pixel alternately displays normal color and reference color, thus
Achieve the effect that reduce laser annealing unevenness, the final display effect for improving display device.
In the present embodiment, the reference color is black, and in other embodiments, the reference color is red, green
Or other colors blue or well known by persons skilled in the art.
[embodiment two]
The present embodiment provides a kind of display panel, the display panel uses the driving of pixel circuit described in embodiment one
Method is driven.
Driving method with pixel circuit described in embodiment one in the display panel of the present embodiment, by the pixel electricity
Road is divided into multiple repetitive units, is the picture of 2X hertz of two frame by X hertz of a frame of picture decomposition, in the first frame time, weight
First part's pixel in multiple unit normally shows that second part pixel shows reference color；In the second frame time, repeat single
Second part pixel in member normally shows that first part's pixel shows reference color；First part's pixel with second
Point pixel is arranged alternately in the repetitive unit, so that adjacent pixel alternately displays normal color and reference color, thus
Achieve the effect that reduce laser annealing unevenness, the final display effect for improving display device.
[embodiment three]
Referring to FIG. 4, its structural block diagram for display device provided by the embodiment of the present invention three.As shown in figure 4, this reality
It applies example and a kind of display device is provided, the display device includes digital analog converter 200, frequency doubling system 300 and display panel
400；The display panel 400 is display panel described in embodiment two；One external data signal 500 passes through the digital-to-analogue conversion
Device 200 is converted to the analog signal of the X hertz normally shown；X hertz of the analog signal passes through 300 turns of the frequency doubling system
It is changed to 2X hertz of analog signal；It is input to the display panel 400, is shown accordingly.
X is the integer between 0~120, such as X is 30,60,90 or 100, it is preferred that X 60.One external data signal
500 are converted to normally show 60 hertz of analog signal by the digital analog converter 200；60 hertz of the analog signal
120 hertz of analog signal is converted to by the frequency doubling system 300；It is input to the display panel 400, is shown accordingly
Show.
The frequency doubling system 300 also provides reference signal to the display panel 400, is used for the display panel 400
Reference color is provided.
Display device in the present embodiment has the display panel in embodiment two, the pixel circuit is divided into multiple heavy
60 hertz of one frame of picture decomposition is the picture of 120 hertz of two frame, in the first frame time, in repetitive unit by multiple unit
First part's pixel normally shows that second part pixel shows reference color；In the second frame time, in repetitive unit second
Partial pixel normally shows that first part's pixel shows reference color；First part's pixel and second part pixel are in institute
It states in repetitive unit and is arranged alternately, so that adjacent pixel alternately displays normal color and reference color, swash to reach reduction
The effect of photo-annealing unevenness, the final display effect for improving display device.
In conclusion the driving method of pixel circuit provided by the invention, display panel and display device, by the pixel
Circuit is divided into multiple repetitive units, is the picture of 2X hertz of two frame by X hertz of a frame of picture decomposition, in the first frame time,
First part's pixel in repetitive unit normally shows that second part pixel shows reference color；In the second frame time, repeat
Second part pixel in unit normally shows that first part's pixel shows reference color；First part's pixel and second
Partial pixel is arranged alternately in the repetitive unit, so that adjacent pixel alternately displays normal color and reference color, from
And achieve the effect that reduce laser annealing unevenness, the final display effect for improving display device.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (10)
1. a kind of driving method of pixel circuit, for solving laser annealing unevenness, comprising: pixel array is divided into multiple repetitions
Unit, which is characterized in that further include: it is the picture of 2X hertz of two frame by X hertz of a frame of picture decomposition, in the first frame time
Interior, first part's pixel in repetitive unit is normally shown, second part pixel shows reference color；In the second frame time,
Second part pixel in repetitive unit normally shows that first part's pixel shows reference color；Wherein, first part's picture
Element is arranged alternately in the repetitive unit with second part pixel, and X is the integer between 0~120.
2. the driving method of pixel circuit as described in claim 1, which is characterized in that X 60.
3. the driving method of pixel circuit as described in claim 1, which is characterized in that the line number of pixel in the repetitive unit
It is determined by the size and pel spacing of the laser annealing unevenness.
4. the driving method of pixel circuit as claimed in claim 3, which is characterized in that the line number of pixel in the repetitive unit
By the size of laser annealing unevenness in a column direction divided by pel spacing, round numbers is obtained；The column of pixel in the repetitive unit
Number is less than or equal to line number.
5. the driving method of pixel circuit as described in claim 1, which is characterized in that the repetitive unit includes two first
Partial pixel and two second part pixels, and first part's pixel and second part pixel correspond.
6. the driving method of pixel circuit as described in claim 1, which is characterized in that the reference color be black, red,
Green or blue.
7. a kind of display panel, which is characterized in that using the driving such as pixel circuit according to any one of claims 1 to 6
Method is driven.
8. a kind of display device characterized by comprising digital analog converter, frequency doubling system and as claimed in claim 7 aobvious
Show panel；One external data signal is converted to the analog signal of the X normally shown hertz by the digital analog converter；The X
The analog signal of hertz is converted to 2X hertz of analog signal by the frequency doubling system；It is input to the display panel, is carried out
Corresponding display；Wherein, X is the integer between 0~120.
9. display device as claimed in claim 8, which is characterized in that X 60.
10. display device as claimed in claim 8, which is characterized in that the frequency doubling system is also used to the display panel
Reference signal is provided.
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| CN201610997051.5A CN108074525B (en) | 2016-11-11 | 2016-11-11 | Driving method, display panel and the display device of pixel circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610997051.5A CN108074525B (en) | 2016-11-11 | 2016-11-11 | Driving method, display panel and the display device of pixel circuit |
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| CN108074525B true CN108074525B (en) | 2019-09-17 |
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Citations (5)
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|---|---|---|---|---|
| CN1622718A (en) * | 2004-12-15 | 2005-06-01 | 友达光电股份有限公司 | Method of selective laser crystallization and display panel manufactured by same method |
| CN1684248A (en) * | 2004-04-17 | 2005-10-19 | 鸿富锦精密工业（深圳）有限公司 | Low temperature polysilicon thin film electric crystal base board and its producing method |
| JP2006024887A (en) * | 2004-07-05 | 2006-01-26 | Samsung Sdi Co Ltd | Semiconductor device and its manufacturing method |
| CN104464631A (en) * | 2014-12-23 | 2015-03-25 | 京东方科技集团股份有限公司 | Drive method for display panel, display panel and display device |
| CN104966483A (en) * | 2015-07-28 | 2015-10-07 | 京东方科技集团股份有限公司 | Pixel structure, driving method, display panel and display device |
-
2016
- 2016-11-11 CN CN201610997051.5A patent/CN108074525B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1684248A (en) * | 2004-04-17 | 2005-10-19 | 鸿富锦精密工业（深圳）有限公司 | Low temperature polysilicon thin film electric crystal base board and its producing method |
| JP2006024887A (en) * | 2004-07-05 | 2006-01-26 | Samsung Sdi Co Ltd | Semiconductor device and its manufacturing method |
| CN1622718A (en) * | 2004-12-15 | 2005-06-01 | 友达光电股份有限公司 | Method of selective laser crystallization and display panel manufactured by same method |
| CN104464631A (en) * | 2014-12-23 | 2015-03-25 | 京东方科技集团股份有限公司 | Drive method for display panel, display panel and display device |
| CN104966483A (en) * | 2015-07-28 | 2015-10-07 | 京东方科技集团股份有限公司 | Pixel structure, driving method, display panel and display device |
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