CN108257558A - A kind of driving compensation circuit, method and its display device - Google Patents
A kind of driving compensation circuit, method and its display device Download PDFInfo
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- CN108257558A CN108257558A CN201810098663.XA CN201810098663A CN108257558A CN 108257558 A CN108257558 A CN 108257558A CN 201810098663 A CN201810098663 A CN 201810098663A CN 108257558 A CN108257558 A CN 108257558A
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- compensation
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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
- G09G3/3258—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 with pixel circuitry controlling the voltage across the light-emitting element
Abstract
The present invention provides a kind of driving compensation circuit, method and its display device, driving compensation circuit, method and its display device, including driving unit, control unit, data Data lines and compensating unit；Wherein, the data Data lines are divided into N parts according to the item number of horizontal scanning line, and calculate the compensation Data voltages of every section of equivalet class specific resistance；The compensating unit accesses the driving unit voltage signal line, and carry out voltage compensation according to the compensation Data voltages.Technical solution of the present invention can promote the homogeneity of display picture and display quality.
Description
Technical field
The invention belongs to display technology fields, and in particular to a kind of driving compensation circuit, method and its display device.
Background technology
With the progress of display technology, more and more active matrix organic light-emitting diode (Active Matrix
Organic Light Emitting Diode, AMOLED) display panel enters market, it is shown relative to traditional transistor liquid crystal
Show panel (Thin Film Transistor Liquid Crystal Display, TFT LCD), AMOLED display panels tool
There are faster reaction speed, higher contrast and broader visual angle, therefore, AMOLED is more and more by panel factory
The attention of quotient.
It is influenced by blue light efficiency is low, especially when showing some high brightness pictures, on the V-data circuits of blue pixel
Electric current it is excessive.It is lost on V-data data voltage transmission lines according to formula U=I*R it is found that having certain voltage Δ V,
So that screen pixel of the body far from IC ends can not obtain correct data voltage, the inhomogeneity on display picture is caused, influences end
Hold customer experience degree and the performance of product optical data.It is contemplated that improving the luminous efficiency of blue pixel material, blue light is reduced
Electric current, promoted show picture homogeneity；Also it can consider from flank angle, reduce the pressure drop on transmission line as possible.At present, it solves
Certainly the main method of the problem is the backoff algorithm of Pixel-level, needs accurately to measure the optical appearance of each pixel, thus into
Row data correction, this method need special customization grade driving IC that could meet, and cost is excessive.
Invention content
One purpose of the embodiment of the present invention is intended to provide a kind of driving compensation circuit, method and its display device, passes through
To the method that V-data data voltages compensate, the homogeneity for showing picture is promoted.
The embodiment of the present invention provides a kind of driving compensation circuit, including driving unit, control unit, data Data lines and benefit
Repay unit；Wherein,
The data Data lines are divided into N parts according to the item number of horizontal scanning line, and calculate every section of equivalet class than electricity
The compensation Data voltages of resistance；
The compensating unit accesses the driving unit voltage signal line, and carry out electricity according to the compensation Data voltages
Pressure compensation.
Preferably, described control unit includes power control unit and time control unit.
Preferably, further include peripheral circuit, the peripheral circuit is connect with the driving unit voltage signal line, for pair
Each output port of the compensating unit carries out voltage compensation.
Preferably, the peripheral circuit further includes register, and the register is used to change offset voltage value.
The embodiment of the present invention also provides a kind of driving compensation method, including driving unit, control unit, data Data lines and
Compensating unit, the compensation method include：
Equivalet class is divided into N parts, and calculate than stage, the data Data lines according to the item number of horizontal scanning line
The compensation Data voltages of every section of equivalet class specific resistance；
Working stage, the compensating unit access the driving unit voltage signal line according to the compensation Data voltages,
And carry out voltage compensation.
Preferably, described control unit includes power control unit and time control unit.
Preferably, further include peripheral circuit, the peripheral circuit is connect with the driving unit voltage signal line, for pair
Each output port of the compensating unit carries out voltage compensation.
Preferably, the peripheral circuit further includes register, and the register is used to change offset voltage value.
The embodiment of the present invention also provides a kind of display device, including above-mentioned driving compensation circuit.
A kind of driving compensation circuit provided in an embodiment of the present invention, method and display device are provided and a kind of are driven from system
The method compensated on dynamic to V-data data voltages, is corrected by the data voltage to pixel of not going together, and promotes display
Uniform sex expression on picture.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be implemented in accordance with the contents of the specification, and in order to allow the present invention above-mentioned driving compensation circuit, method and its display
Device and other purposes, feature and advantage can be clearer and more comprehensible, special below to lift preferred embodiment, and coordinate attached drawing, specifically
It is bright.
Description of the drawings
Fig. 1 is that the embodiment of the present invention provides a kind of structure diagram for driving compensation circuit.
Fig. 2 is a kind of schematic equivalent circuit for driving data Data lines in compensation circuit provided in an embodiment of the present invention.
Fig. 3 is a kind of structure diagram for driving the corresponding peripheral circuit of compensation circuit provided in an embodiment of the present invention.
Fig. 4 is equivalent circuit provided in an embodiment of the present invention.
Fig. 4 a are equivalent circuits described in Fig. 4；
Fig. 4 b are the first equivalent circuits described in Fig. 4；
Fig. 4 c are second of equivalent circuits described in Fig. 4；
Fig. 4 d are the m kind equivalent circuits described in Fig. 4.
Fig. 5 is that the embodiment of the present invention provides a kind of flow diagram for driving compensation method.
Specific embodiment
The technological means and effect taken further to illustrate the present invention to reach predetermined purpose, below in conjunction with attached drawing
And preferred embodiment, to the specific embodiment party of a kind of driving compensation circuit, method and its display device proposed according to the present invention
Formula, structure, feature and its effect are described in detail as after.
For the present invention aforementioned and other technology contents, feature and effect, in the preferable implementation of following cooperation reference chart
It can be clearly appeared from the detailed description of example.By the explanation of specific embodiment, when can be to the present invention to reach predetermined purpose
The technological means and effect taken be able to more deeply and it is specific understand, however institute's attached drawing be only to provide reference and description it
With being not intended to limit the present invention.
Also referring to Fig. 1 to Fig. 3, Fig. 1 is that the embodiment of the present invention provides a kind of structure diagram for driving compensation circuit,
Fig. 2 is a kind of schematic equivalent circuit for driving data Data lines in compensation circuit provided in an embodiment of the present invention, and Fig. 3 is this hair
A kind of structure diagram for the corresponding peripheral circuit of driving compensation circuit that bright embodiment provides.As shown in Figure 1, the driving compensates
Circuit include driving unit, control unit, data Data lines and compensating unit, the control unit include power control unit and when
Between control unit, working stage, which opens, which is used for the supply voltage of Acquisition Circuit, and base
Corresponding offset voltage is adjusted in the supply voltage, which cooperates with the power control unit to adjust offset voltage；
Wherein, as shown in Figures 2 and 3, data Data lines are divided into N parts, and calculate every section according to the item number of horizontal scanning line
The compensation Data voltages of equivalet class specific resistance；The compensating unit accesses the driving unit electricity according to the compensation Data voltages
Signal wire is pressed, and carries out voltage compensation；The driving compensation circuit further includes peripheral circuit, and the peripheral circuit and the driving are single
First voltage signal line connection, for carrying out voltage compensation to each output port of the compensating unit；The peripheral circuit also wraps
Register is included, for storing data.In the embodiment of the present invention, which is used to change offset voltage value,.
According to resistivity formula：R=ρ * L/S, wherein, ρ is the resistivity of conductor, and L is the length of conductor, and S is conductor edge
The cross-sectional area of conducting direction.Same material, the electricalresistivityρ of conductor is identical, and Data lines is equal according to the item number of horizontal scanning line
It is divided into N parts, ensures that the L of each section of low resistance is identical, and ignore the deviation of the S values of Array techniques introducing, then each section
Low resistance resistance value is identical.
Referring to Fig. 4, Fig. 4 is equivalent circuit provided in an embodiment of the present invention；Fig. 4 a are equivalent circuits described in Fig. 4；Fig. 4 b
It is the first equivalent circuit described in Fig. 4；Fig. 4 c are second of equivalent circuits described in Fig. 4；Fig. 4 d are the m kinds described in Fig. 4
Equivalent circuit.As shown in figure 4, with 1080*1920 resolution ratio, analogy goes out 8 sections of low resistance citings, takes N=2^N (n=1,2,
3 ...)=8 (n=3), then N1=N2=N3=... 1920 scan lines are divided into 8 parts by=1920/8=240 in order,
Every section of low resistance is R, and stagnation pressure is reduced to Δ V.
As shown in Figure 4 b, the pressure drop that nearly 7 sections of low resistances in IC ends are got is Δ V* (7/8), then after the 8th section of resnstance transformer
Data voltages are：Vdata+ΔV*(7/8)。
As illustrated in fig. 4 c, the pressure drop that nearly 6 sections of low resistances in IC ends are got is Δ V* (7/8) * (6/7), then after the 7th section of compensation
Data voltages be：Vdata+ΔV*(3/4)。
As shown in figure 4d, the pressure drop that nearly IC ends m sections of low resistance is got is Δ V*m/8, then after (m+1) section resnstance transformer
Data voltages be：Vdata+ΔV*m/8(1<=m<=7).
Referring again to Fig. 3, as shown in figure 3, the final offset voltage of the peripheral circuit and shielding the correspondence of body and being：IC is most
Distal end 1920/8=240 rows pixel write-in offset voltage be：Δ V* (7/8), the compensation electricity of next 240 row pixel write-in
It presses and is：Vdata+ Δ V* (3/4), and so on.
The homogeneity contrast table of the display panel of the application this programme driving compensation circuit of table 1
| Product identification | Former homogeneity data | Homogeneity data after compensation |
| #1 | 88% | 93% |
| #2 | 87% | 92% |
| #3 | 87% | 94% |
| #4 | 85% | 95% |
| #5 | 86% | 93% |
| #6 | 84% | 95% |
| #7 | 81% | 94% |
Table 1 is please referred to, table 1 is the homogeneity contrast table using the display panel of this programme driving compensation circuit.Such as 1 institute of table
Show, the homogeneity that module product carries out after voltage data compensation obtains a degree of promotion, is up to standard with homogeneity 90%
Line, #1 products are slightly worse to #3 product characteristics, are closer to line up to standard, and the degree for importing compensation can be slightly lower, can also at least be promoted
5%；#4 products are poor to #7 product itself characteristics, have segment distance from line up to standard, and the degree for importing compensation can be slightly higher, at least
7% can be promoted, with this, realizes the promotion of product yield.In addition, because of having differences property between display module, between product
Optical characteristics is often not fully consistent, in this regard, being driven the voltage number of level for the slightly worse module product of display characteristic
According to compensation, the effect of compensation is mainly reflected in the brightness of product, in the promotion of coloration homogeneity, is conducive to display terminal client's
The improvement of user experience, user when using product, will not because the brightness of single pure color picture, coloration inhomogeneity due to feel
Feel and have differences between a few place regions on screen or can liken to, by the compensation way, one piece can be made to see
" calico " of some spot flaws up, becomes clean and pure white.
The embodiment of the present invention provides a kind of driving compensation circuit, which is hindered by V-data lines whole to one
Anti- measurement calculates the distribution impedance partial pressure of each two partial node, synchronous to consider that finally desired homogeneity precision is come whole
Two partial node numbers are closed, correction voltage value is compensated and gives V-data electrodes, correct data voltage, is promoted and shows homogeneity.
The embodiment of the present invention also provides a kind of driving compensation method, including driving unit, control unit, data Data lines and
Compensating unit, the compensation method include：
Equivalet class is divided into N parts, and calculate than stage, the data Data lines according to the item number of horizontal scanning line
The compensation Data voltages of every section of equivalet class specific resistance；
Working stage, the compensating unit access the driving unit voltage signal line according to the compensation Data voltages,
And carry out voltage compensation.
The control unit includes power control unit and time control unit.
Peripheral circuit is further included, the peripheral circuit is connect with the driving unit voltage signal line, for the benefit
The each output port for repaying unit carries out voltage compensation, which further includes register, for changing offset voltage value.
Driving compensation method provided in an embodiment of the present invention by by Data lines equivalet class ratio, while mends voltage
It repays, so as to promote the homogeneity of display.
The driving specific operation principle of compensation method provided in an embodiment of the present invention is same as the previously described embodiments, herein no longer
It repeats.
The embodiment of the present invention also provides a kind of display device, including above-mentioned driving compensation circuit.Drive compensation method and
Operation principle is same as the previously described embodiments, and details are not described herein.
Driving compensation circuit provided by the present invention, method and its display device are described in detail above, herein
In apply specific case the principle of the present invention and embodiment be expounded, the explanation of above example is only intended to sides
Assistant solves the method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, think of according to the present invention
Think, in specific embodiments and applications there will be changes, in conclusion the content of the present specification should not be construed as pair
The limitation of the present invention.
Claims (9)
1. a kind of driving compensation circuit, which is characterized in that including driving unit, control unit, data Data lines and compensating unit；
Wherein,
The data Data lines are divided into N parts according to the item number of horizontal scanning line, and calculate every section of equivalet class specific resistance
Compensate Data voltages；
The compensating unit accesses the driving unit voltage signal line, and carry out voltage benefit according to the compensation Data voltages
It repays.
2. driving compensation circuit according to claim 1, which is characterized in that described control unit includes power control unit
And time control unit.
3. driving compensation circuit according to claim 1, which is characterized in that further include peripheral circuit, the peripheral circuit
It is connect with the driving unit voltage signal line, for carrying out voltage compensation to each output port of the compensating unit.
4. driving compensation circuit according to claim 3, which is characterized in that the peripheral circuit further includes register, institute
Register is stated for changing offset voltage value.
5. a kind of driving compensation method, which is characterized in that including driving unit, control unit, data Data lines and compensating unit,
The compensation method includes：
Equivalet class is divided into N parts, and calculate every section than stage, the data Data lines according to the item number of horizontal scanning line
The compensation Data voltages of equivalet class specific resistance；
Working stage, the compensating unit access the driving unit voltage signal line according to the compensation Data voltages, go forward side by side
Row voltage compensation.
6. driving compensation method according to claim 5, which is characterized in that described control unit includes power control unit
And time control unit.
7. driving compensation method according to claim 5, which is characterized in that further include peripheral circuit, the peripheral circuit
It is connect with the driving unit voltage signal line, for carrying out voltage compensation to each output port of the compensating unit.
8. driving compensation method according to claim 7, which is characterized in that the peripheral circuit further includes register, institute
Register is stated for changing offset voltage value.
9. a kind of display device, which is characterized in that including driving compensation circuit according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098663.XA CN108257558A (en) | 2018-01-31 | 2018-01-31 | A kind of driving compensation circuit, method and its display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810098663.XA CN108257558A (en) | 2018-01-31 | 2018-01-31 | A kind of driving compensation circuit, method and its display device |
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Cited By (2)
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| CN109377947A (en) * | 2018-12-13 | 2019-02-22 | 武汉华星光电半导体显示技术有限公司 | Display device and its driving method |
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Application publication date: 20180706 |