CN108053800A - Display device and its driving method - Google Patents
Display device and its driving method Download PDFInfo
- Publication number
- CN108053800A CN108053800A CN201810074392.4A CN201810074392A CN108053800A CN 108053800 A CN108053800 A CN 108053800A CN 201810074392 A CN201810074392 A CN 201810074392A CN 108053800 A CN108053800 A CN 108053800A
- Authority
- CN
- China
- Prior art keywords
- pixel unit
- rows
- row
- voltage
- display device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
Abstract
This application discloses a kind of display device and its driving method, display device includes：Multiple pixel units, each pixel unit are connected to receive corresponding gate drive signal with a corresponding scan line, and each pixel unit is connected to receive corresponding gray scale voltage with a corresponding data cable；Balance module, balance module generate at least one equalizing voltage according to selected multiple gray scale voltages, and the Non-scanning mode stage includes compensation section, and in section is compensated, balance module exports corresponding equalizing voltage by a plurality of data lines.The driving method of the display device of each embodiment and display device can provide equalizing voltage to pieces of data line in the Non-scanning mode stage of picture frame according to selected gray scale voltage according to the present invention so that charging time when each pixel unit is switched on is substantially uniform.
Description
Technical field
The present invention relates to display technology field, more particularly, to display device and its driving method.
Background technology
The display device of mainstream mainly includes liquid crystal display device (Liquid Crystal Display, abbreviation at present
) and the display device based on Organic Light Emitting Diode (Organic Light-Emitting Diode, abbreviation OLED) LCD.Its
In, liquid crystal display device has many advantages, such as Low emissivity, small and low power consuming, is widely used in laptop, plane
In the electronic products such as TV or mobile phone；Display device based on Organic Light Emitting Diode, which has, is not required to backlight, contrast
It is high, thickness is thin, visual angle is wide, reaction speed is fast, available for flexibility panel, use temperature range is wide, construct and processing procedure is simpler
Etc. excellent characteristic, therefore will continue in display market by widely promotion and application.It is right by taking liquid crystal display device as an example below
Background technology illustrates.
Fig. 1 shows the work schedule schematic diagram of traditional liquid crystal display device.
Fig. 2 shows that each region of traditional liquid crystal display device is illustrated with the correspondence in each section in a picture frame
Figure.
The 11 generally rectangular array of pel array of liquid crystal display device 10, display refer to for each picture in pel array
Plain unit is scanned, and to sequentially turn on each row pixel unit Line [1] to Line [q], wherein q is non-zero natural number.
When display pointer first pixel unit of one-row pixels unit from pel array is moved to the last of this line
, it is necessary to be switched to first pixel unit of next line from the last one pixel unit of this line after one pixel unit, with
Start the scanning process to next line pixel unit, switch at once, row switching needs the regular hour.
When display pointer completes the scanning of the last one pixel unit of pel array last column pixel unit Line [q]
Afterwards, it is necessary to be switched to the first row pixel unit Line [1] from the last one pixel unit of last column pixel unit Line [q]
First pixel unit, to start the scanning process of next picture frame, i.e., frame switches, and similarly, frame switching is also required to one
The fixed time.
To meet row switching and frame switching time, in the prior art, a picture frame of liquid crystal display device is in sequential
It is upper to include sweep phase and Non-scanning mode stage.Wherein, display pointer sequentially turns on each row pixel unit in sweep phase, and display refers to
Pin completes the processes such as row switching and frame switching in the Non-scanning mode stage.In the Non-scanning mode stage, each pixel list in pel array
Member is not switched on.
As depicted in figs. 1 and 2, in a picture frame：Vertical blanking before being set before each sweep phase starts
(Vertical Front Porch, VFP) section, the vertical blanking (Vertical after setting after each sweep phase
Back Porch, VBP) section, to meet the time needed for frame switching；Also, in the scanning process of every row pixel pixel unit
Horizontal blanking (Horizontal Front Porch, HFP) section, the scanning process in every row pixel unit before being set before starting
After set after horizontal blanking (Horizontal Back Porch, HBP) section, switch required time to meet row.
Fig. 3 shows the structure diagram of a pixel unit in traditional liquid crystal display device.
As shown in figure 3, pixel unit includes thin film transistor (TFT) T, pixel capacitance CLCWith liquid crystal molecule (not shown), wherein,
Pixel capacitance CLCFormed by pixel electrode and public electrode, pixel electrode is connected with the drain electrode of thin film transistor (TFT) T, public electrode with
Reference ground connects.The source electrode of thin film transistor (TFT) T receives gray scale voltage S, the grid of thin film transistor (TFT) by a corresponding data cable
Pole receives gate drive signal G by a corresponding scan line.
When the pixel unit is scanned, the grid of thin film transistor (TFT) T receives effective gate drive signal G, so as to thin
Film transistor T is turned on, and the gray scale voltage S that its source electrode receives is transferred to pixel electrode by thin film transistor (TFT) T so that liquid crystal molecule
Residing electric field environment changes, so as to change the light transmittance of the pixel unit, i.e. display brightness.
If the pixel unit is located at the first row of pel array, exist before the pixel unit is scanned longer
The Non-scanning mode stage (is used to implement the VFP sections of frame switching and VBP sections), during this period, the film crystal in the pixel unit
The voltage that the source electrode of pipe receives is low level, and therefore, the source electrode of thin film transistor (TFT) is not electrically charged, so as to when the pixel unit quilt
During scanning, the source electrode of thin film transistor (TFT) needs the longer charging time.
If before the pixel unit is scanned, another one-row pixels unit is just scanned, then in the pixel unit
The source electrode of thin film transistor (TFT) can be electrically charged by data cable, then when the pixel unit is scanned, the source of thin film transistor (TFT)
Pole needs shorter charging time or discharge time.
Therefore, the charge condition of each row pixel unit in pel array is not quite identical, display device is caused to occur bright
The display problems such as line or concealed wire.
The content of the invention
In consideration of it, it is an object of the invention to provide a kind of display device and its driving methods so that each pixel unit
Charge condition it is basically identical, led so as to suppress or eliminate concealed wire, bright line etc. since the charge condition of pixel unit is inconsistent
The display problem of cause.
According to an aspect of the present invention, a kind of display device is provided, wherein, a picture frame bag of the display device
Sweep phase and Non-scanning mode stage are included, the display device includes：Multiple pixel units, each described one correspondence of pixel unit
Scan line be connected to receive corresponding gate drive signal, each pixel unit data cable corresponding with one be connected with
Receive corresponding gray scale voltage；Grid electrode drive module, the grid electrode drive module provide phase respectively by a plurality of scan line
The gate drive signal answered, to scan each pixel unit successively according to certain order in the sweep phase；
Source drive module, the source drive module provide the corresponding gray scale voltage, institute respectively by a plurality of data cable
It states display device and further includes balance module, the balance module generates at least one equal according to selected multiple gray scale voltages
Weigh voltage, and the Non-scanning mode stage includes compensation section, and in the compensation section, the balance module passes through a plurality of number
The corresponding equalizing voltage is exported according to line.
Preferably, the multiple pixel unit is arranged as the rectangular array of n rows m row, and n and m are non-zero natural number, and the 1st
Be connected to pixel unit described in n rows is corresponding with scan line described in the 1st to n articles respectively, the 1st to the m row pixel unit respectively with
Data cable described in 1st to m articles, which corresponds to, to be connected.
Preferably, pixel unit is respectively as k target line described in the k rows in pixel unit described in n rows, picture described in n rows
Pixel unit described in j rows in plain unit is respectively as j reference row, and the balance module is respectively according to the 1st to the j base
The gray scale voltage received when being there won't be any problem switched on generates the j equalizing voltages, and k and j are non-zero natural number, each
The target line be scanned before the compensation section in, the balance module exports the j by a plurality of data lines
One of equalizing voltage.
Preferably, the grayscale received when the balance module is switched on respectively according to the 1st to the j reference row
The average value of voltage generates the j equalizing voltages.
Preferably, the balance module includes：Storage unit, for storing the default j reference rows described in n rows
Position and/or conducting sequential in pixel unit；Voltage generating unit is connected with the storage unit, for pre- according to being located at
It deposits the gray scale voltage received when the on position the 1st to the j reference row is switched on and generates the j equalizing voltages.
Preferably, each described image frame includes a sweep phase and a compensation section, the compensation
Section includes j compensation subinterval, and prior to the sweep phase, pixel unit described in the 1st row is predetermined to be in the compensation section
The target line, pixel unit described in the n-th-j+1 to n rows are predetermined to be the 1st to the j benchmark of presently described picture frame
Row, the grid electrode drive module are used to scan picture described in the 1st to n rows successively in the sweep phase of presently described picture frame
Plain unit is scanned successively, and the balance module is used to connect when being switched on according to the j reference rows of presently described picture frame
The gray scale voltage received generates the 1st to the j equalizing voltage of presently described picture frame, and in the 1st to the j benefit
Repay the 1st to the j equalizing voltage for exporting previous described image frame in subinterval respectively by a plurality of data lines.
Preferably, each described image frame includes p image subframes, and each described image subframe includes the scanning
Stage and a compensation section, p is the natural number more than 1 and n and j are respectively the integral multiple of p, in each described image
In frame, the compensation section includes j/p compensation subinterval, picture described in n/p rows prior to the sweep phase, the compensation section
Pixel unit described in the 1st row in plain unit is predetermined to be the target line, n-th/p-j/p+ in pixel unit described in n/p rows
Pixel unit described in 1 to n/p rows is predetermined to be the 1st to the j/p reference row of presently described image subframes, and the grid drives
Dynamic model block scans pixel unit described in n/p rows successively for the sweep phase in each described image subframe, described equal
The gray scale voltage that the j/p reference rows of the weighing apparatus module in presently described image subframes receive when being switched on
Generate the 1st to the j/p equalizing voltage of presently described image subframes and in the 1st to the j/p compensation subinterval
The the 1st to the j/p equalizing voltage of previous described image subframe is exported by a plurality of data lines.
Preferably, the width in each compensation subinterval, which is equal to, often goes the pixel unit and is scanned time once.
Preferably, the pixel unit includes the pixel unit based on liquid crystal or the pixel list based on Organic Light Emitting Diode
Member.
According to another aspect of the present invention, a kind of driving method for display device, the display device are additionally provided
Including multiple pixel units, each pixel unit is connected to receive corresponding raster data model letter with a corresponding scan line
Number, each pixel unit is connected to receive corresponding gray scale voltage with a corresponding data cable, wherein, the driving side
Method includes：One picture frame is divided into sweep phase and Non-scanning mode stage；It is provided respectively accordingly to a plurality of scan line
The gate drive signal to scan each pixel unit successively in the sweep phase according to certain order；To a plurality of institute
It states data cable and the corresponding gray scale voltage is provided respectively；At least one equilibrium is generated according to selected multiple gray scale voltages
Voltage；Compensation section within the Non-scanning mode stage is set, in the compensation section, correspondence is provided to a plurality of data lines
The equalizing voltage.
Preferably, the multiple pixel unit is arranged as the rectangular array of n rows m row, and n and m are non-zero natural number, and the 1st
Be connected to pixel unit described in n rows is corresponding with scan line described in the 1st to n articles respectively, the 1st to the m row pixel unit respectively with
Data cable described in 1st to m articles, which corresponds to, to be connected.
Preferably, pixel unit described in the j rows in pixel unit described in n rows is respectively as j reference row, j for non-zero from
The step of so number, multiple gray scale voltages that the basis is selected generate at least one equalizing voltage, includes：Respectively according to the 1st
The gray scale voltage received when being switched on to the j reference rows generates the j equalizing voltages.
Preferably, the gray scale voltage received when each equalizing voltage is switched on equal to each reference row
Average value.
Preferably, pixel unit described in the k rows in pixel unit described in n rows is respectively as k target line, k for non-zero from
So number in the compensation section, includes the step of a plurality of data lines offer corresponding equalizing voltage：Each
The target line be scanned before the compensation section in, provide one of described j equalizing voltage to a plurality of data lines.
Preferably, each described image frame includes a sweep phase and a compensation section, in current institute
It states in picture frame, pixel unit is scanned successively in the sweep phase described in the 1st to n rows, and the compensation section is prior to institute
Sweep phase is stated, pixel unit described in the 1st row is as the target line, and pixel unit described in the n-th-j+1 to n rows is as current institute
The the 1st to the j reference row of picture frame is stated, the 1st to the j equalizing voltage of presently described picture frame is according to presently described
The gray scale voltage that the j reference rows of picture frame receive when being switched on generates, and the compensation section includes j compensation
Subinterval, in the 1st to the j compensation subinterval, a plurality of data lines receive respectively the 1st of previous described image frame to
The j equalizing voltages.
Preferably, each described image frame includes p image subframes, and each described image subframe includes the scanning
Stage and a compensation section, p is the natural number more than 1 and n and j are respectively the integral multiple of p, in each described image
In frame, pixel unit is scanned successively in the sweep phase described in n/p rows, and the compensation section is prior to the scanning rank
Section, pixel unit is as the target line described in the 1st row in pixel unit described in n/p rows, in pixel unit described in n/p rows
1st to the j/p reference row of the pixel unit described in n-th/p-j/p+1 to n/p rows as presently described image subframes, currently
The j/p in presently described image subframes reference row quilts of the 1st to the j/p equalizing voltage of described image subframe
The gray scale voltage received during conducting generates, and the compensation section includes j/p compensation subinterval, in the 1st to j/p institute
It states in compensation subinterval, a plurality of data lines receives the 1st to the j/p equilibrium for receiving previous described image subframe respectively
Voltage.
Preferably, the width in each compensation subinterval, which is equal to, often goes the pixel unit and is scanned time once.
The driving method of the display device of each embodiment and display device according to the present invention, can be in the Non-scanning mode of picture frame
Stage applies equalizing voltage according to selected gray scale voltage to each pixel unit so that each pixel unit in pel array
Charge condition is substantially uniform, so as to suppress or eliminate the display problems such as concealed wire, bright line.
Description of the drawings
By the description referring to the drawings to the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and
Advantage will be apparent from.
Fig. 1 shows the work schedule schematic diagram of traditional liquid crystal display device.
Fig. 2 shows that each region of traditional liquid crystal display device is illustrated with the correspondence in each section in a picture frame
Figure.
Fig. 3 shows the structure diagram of a pixel unit in traditional liquid crystal display device.
Fig. 4 shows the equivalent structure schematic diagram of display device according to a first embodiment of the present invention.
Fig. 5 a show a kind of time diagram of a picture frame of display device according to a first embodiment of the present invention.
Figure 5b shows that another time diagrams of a picture frame of display device according to a first embodiment of the present invention.
Fig. 6 shows the flow diagram of the driving method of display device according to a second embodiment of the present invention.
Specific embodiment
Hereinafter reference will be made to the drawings is more fully described the present invention.In various figures, identical element is using similar attached
Icon is remembered to represent.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.In addition, it may not show in figure
Go out some well known parts.
Many specific details of the present invention, such as the structure of device, material, size, processing work is described hereinafter
Skill and technology, to be more clearly understood that the present invention.But it just as the skilled person will understand, can not press
The present invention is realized according to these specific details.
The present invention can be presented in a variety of manners, some of them example explained below.
Fig. 4 shows the equivalent structure schematic diagram of display device according to a first embodiment of the present invention.
As shown in figure 4, display device 100 includes grid electrode drive module 110, source drive module 120, multiple pixel units
130 and balance module 140.One picture frame Df of display device 100 includes sweep phase scan_phase and Non-scanning mode stage
Other_phase, Non-scanning mode stage other_phase include compensation section Pc.Wherein, pixel unit can be based on liquid crystal
Pixel unit or the pixel unit based on Organic Light Emitting Diode, below by taking the pixel unit based on liquid crystal as an example into
Row explanation.
Each pixel unit 130 includes thin film transistor (TFT) T and is formed between pixel electrode and public electrode multiple
Pixel capacitance CLC.In order to keep the voltage at pixel capacitance both ends between the update cycle, can in each pixel unit 130 incite somebody to action
Storage capacitance Cs and pixel capacitance CLCIt is connected in parallel so that the voltage at pixel capacitance both ends can keep the longer time.Each
In pixel unit 130, pixel capacitance CLCIt is connected between drain electrode and the reference ground of thin film transistor (TFT) T, the grid of thin film transistor (TFT)
It is connected to receive corresponding gate drive signal, the source electrode of thin film transistor (TFT) number corresponding with one with a corresponding scan line
It is connected to receive corresponding gray scale voltage according to line.In each pixel unit 130, when the grid of thin film transistor (TFT) T has received
It is turned on during the gate drive signal of effect, the gray scale voltage that the source electrode of thin film transistor (TFT) T receives is transferred to by thin film transistor (TFT) T
On pixel electrode, so as to change pixel capacitance CLCAct on the electric field on liquid crystal molecule, the i.e. orientation by changing liquid crystal molecule
To realize and the corresponding light transmittance of gray scale voltage.Gate drive signal when effective for example equal to high level Vgh, when invalid
Such as equal to low level Vgl.
In the present embodiment, multiple pixel units 130 are arranged in the rectangular array of n rows m row, and n and m are non-zero nature
Number.The grid of thin film transistor (TFT) T in 1st to n rows pixel unit 130 is corresponding with the 1st to n articles scan line respectively to be connected to distinguish
Gate drive signal G [1] to G [n] is received, the source electrode of the thin film transistor (TFT) T in the 1st to m row pixel unit 130 is respectively with the 1st
It is corresponded to m data lines and is connected to receive corresponding gray scale voltage S [1] respectively to S [m].However in some other of the present invention
Embodiment in, multiple pixel units 130 may be arranged in other non-rectangular arrays (such as trapezoidal etc.), people in the art
Member can design the arrangement of multiple pixel units as needed.
Grid electrode drive module 110 provides corresponding gate drive signal G [1] to G [n] to n rows respectively by n scan line
The grid of thin film transistor (TFT) T in pixel unit, with each thin according to certain sequential scan in sweep phase scan_phase
Film transistor T so that each row thin film transistor (TFT) T is sequentially turned on.
Source drive module 120 provides corresponding gray scale voltage S [1] to S [m] extremely each pictures respectively by m data lines
The source electrode of the thin film transistor (TFT) T of plain unit 130.
Balance module 140 is connected with pieces of data line, to generate at least one equilibrium according to selected multiple gray scale voltages
Voltage Vba, in the compensation section Pc of each picture frame, balance module 140 exports corresponding equalizing voltage by m data lines
Vba to each thin film transistor (TFT) source electrode.
In the present embodiment, the k rows pixel unit in n rows pixel unit is respectively as k target line, n row pixel units
In j rows pixel unit respectively as j reference row, balance module 140 connects when being switched on respectively according to the 1st to j reference row
It is non-zero natural number that the gray scale voltage received, which generates j the equalizing voltage Vba, k and j,.Before each target line is scanned
Compensation section Pc in, balance module 140 exports one of j equalizing voltage to each in pel array by m data lines
The source electrode of thin film transistor (TFT).
As a kind of preferred embodiment, balance module 140 receives when being switched on respectively according to the 1st to j reference row
Gray scale voltage average value generate j equalizing voltage.However the embodiment of the present invention is without being limited thereto, in some other embodiments
In, those skilled in the art can be equalized voltage using other algorithms as needed.For example, in some embodiments, it can
Positive value or negative value are divided into each gray scale voltage received when the 1st to j reference row is switched on, then respectively to positive value
Gray scale voltage and the gray scale voltage of negative value carry out computing to be equalized voltage.
Balance module 140 includes storage unit and voltage generating unit, and storage unit is used to store default j reference row
Position and conducting sequential, voltage generating unit in n row pixel units are connected with storage unit, with according on pre-stored location
The 1st to j reference row when being switched on the gray scale voltage that receives generate j equalizing voltage.
Fig. 5 a show a kind of time diagram of a picture frame of display device according to a first embodiment of the present invention.Often
A picture frame Df includes a sweep phase scan_phase and a compensation section Pc, and compensates section Pc prior to sweep phase
scan_phase。
In current image frame Df：1st is scanned successively to n rows pixel unit in sweep phase scan_phase, and the 1st
Row pixel unit is as target line, 1st to j reference rows of the n-th-j+1 to n rows pixel unit as current image frame Df；
The gray scale voltage that weighing apparatus module 140 receives when being switched on according to the j reference row of current image frame Df generates current image frame
1st to j equalizing voltage.
Compensating section Pc includes j compensation subinterval Pc_sub [1] to Pc_sub [j], and balance module 140 is in present image
Unify the 1st to j equalizing voltage of output previous image frame in 1st to j compensation subinterval of frame respectively by m data lines
Vba。
Preferably, each the width in compensation subinterval is equal to often row pixel unit and is scanned time once.
Figure 5b shows that another time diagrams of a picture frame of display device according to a first embodiment of the present invention.
Each picture frame Df, which includes p image subframes Df_sub, each image subframes Df_sub, includes a sweep phase scan_
Phase and compensation section Pc, and section Pc is compensated prior to sweep phase scan_phase, p is the natural number and n more than 1
It is respectively the integral multiple of p with j.
In each image subframes Df_sub：N/p rows pixel unit is scanned successively in sweep phase scan_phase,
The 1st row pixel unit in n/p row pixel units is as target line, n-th/p-j/p+1 in n/p row pixel units to n/p rows
1st to j/p reference row of the pixel unit as present image subframe Df_sub；Balance module 140 is according to present image subframe
The gray scale voltage that j/p reference row in Df_sub receives when being switched on generates the 1st to j/p of present image subframe Df_sub
A equalizing voltage.
Compensating section Pc includes j/p compensation subinterval Pc_sub [1] to Pc_sub [j/p], and balance module 140 is current
Unify output previous image subframe respectively by m data lines in the 1st to the j/p compensation subinterval of image subframes Df_sub
The 1st to the j/p equalizing voltage of Df_sub.
Preferably, each the width in compensation subinterval is equal to often row pixel unit and is scanned time once.
Fig. 6 shows the flow diagram of the driving method of display device according to a second embodiment of the present invention.Including step
S210 to S250.
Wherein, display device includes multiple pixel units, and each pixel unit includes thin film transistor (TFT) and pixel capacitance,
In each pixel unit, pixel capacitance is connected between the drain electrode of thin film transistor (TFT) and reference ground, the grid of each thin film transistor (TFT)
Pole is connected to receive with a corresponding scan line corresponding gate drive signal, the source electrode of each thin film transistor (TFT) and one it is right
The data cable answered is connected to receive corresponding gray scale voltage.Specifically, in the present embodiment, multiple pixel units are arranged as n rows m
The rectangular array of row, n and m are non-zero natural number, and the grid of the thin film transistor (TFT) in the 1st to n row pixel units is respectively with the 1st
It corresponds to and is connected to n scan line, the source electrode of the thin film transistor (TFT) in the 1st to m row pixel units is respectively with the 1st to m data lines
It is corresponding to be connected.The display device of other details and the invention described above first embodiment is essentially identical, and details are not described herein.
In step S210, a picture frame is divided into sweep phase and Non-scanning mode stage, and within the Non-scanning mode stage
Compensation section is set.
In step S220, provided respectively to multi-strip scanning line corresponding gate drive signal in sweep phase according to one
Determine each thin film transistor (TFT) of sequential scan.
In step S230, corresponding gray scale voltage is provided respectively to m data lines.
In step S240, at least one equalizing voltage is generated according to selected multiple gray scale voltages.Wherein, n rows pixel
For j rows pixel unit in unit respectively as j reference row, j is non-zero natural number, is led respectively according to the 1st to j reference row
The gray scale voltage received when logical generates j equalizing voltage.
Preferably, each equalizing voltage is equal to the average value of the gray scale voltage received when each reference row is switched on.
In step s 250, in section is compensated, corresponding equalizing voltage is exported by m data lines.Wherein, n rows picture
K rows pixel unit in plain unit is respectively as k target line, and k is non-zero natural number, the benefit before each target line is scanned
It repays in section, m data lines receive one of j equalizing voltage.
As a kind of specific embodiment, each picture frame includes a sweep phase and a compensation section.Current
In picture frame：1st is scanned successively to n row pixel units in sweep phase, and compensation section is prior to sweep phase, the 1st row picture
Plain unit is as target line, 1st to j reference rows of the n-th-j+1 to n rows pixel unit as current image frame；Present image
The gray scale voltage that 1st to j equalizing voltage of frame receives when being switched on according to j reference row of current image frame generates.It mends
Repaying section includes j compensation subinterval, and m data lines are unified in the 1st to j compensation subinterval respectively to receive previous image frame
The 1st to j equalizing voltage.Preferably, each compensation subinterval width be equal to often row pixel unit be scanned once when
Between.
As another specific embodiment, each picture frame includes p image subframes, and each image subframes include one
Sweep phase and a compensation section, p is the natural number more than 1 and n and j are respectively the integral multiple of p.In each image subframes
In：N/p row pixel units are scanned successively in sweep phase, and compensation section is prior to sweep phase, in n/p row pixel units
1st row pixel unit is as target line, and n-th/p-j/p+1 in n/p row pixel units is to n/p rows pixel unit as current figure
As the 1st to j/p reference row of subframe；1st to j/p equalizing voltage of present image subframe is according in present image subframe
The gray scale voltage that j/p reference row receives when being switched on generates.Compensating section includes j/p compensation subinterval, m data lines
The 1st to j/p equalizing voltage of unified reception previous image subframe in subinterval is compensated at the 1st to j/p respectively.Preferably,
The width in each compensation subinterval is scanned the time once equal to often row pixel unit.
The driving method of the display device of each embodiment and display device according to the present invention, can be in the Non-scanning mode of picture frame
Stage applies for equalizing voltage each pixel unit according to selected gray scale voltage so that each pixel list in pel array
Member be switched on when charging time it is substantially uniform, suppressed or eliminated concealed wire, bright line etc. due to pixel unit charge condition not
Display problem caused by consistent.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in process, method, article or equipment including the element.
According to the embodiment of the present invention as described above, these embodiments are there is no all details of detailed descriptionthe, also not
It is only the specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations.This explanation
Book is chosen and specifically describes these embodiments, is in order to preferably explain the principle of the present invention and practical application, so that affiliated
Technical field technical staff can be used using modification of the invention and on the basis of the present invention well.The present invention is only by right
The limitation of claim and its four corner and equivalent.
Claims (17)
1. a kind of display device, wherein, a picture frame of the display device includes sweep phase and Non-scanning mode stage, described
Display device includes：
Multiple pixel units, each described one corresponding scan line of pixel unit are connected to receive corresponding raster data model letter
Number, each pixel unit is connected to receive corresponding gray scale voltage with a corresponding data cable；
Grid electrode drive module, the grid electrode drive module provide the corresponding raster data model respectively by a plurality of scan line
Signal, to scan each pixel unit successively according to certain order in the sweep phase；
Source drive module, the source drive module provide the corresponding grayscale electricity respectively by a plurality of data cable
Pressure,
The display device further includes balance module, and the balance module generates at least according to selected multiple gray scale voltages
One equalizing voltage,
The Non-scanning mode stage includes compensation section, and in the compensation section, the balance module passes through a plurality of data
Line exports the corresponding equalizing voltage.
2. display device according to claim 1, wherein, the multiple pixel unit is arranged as the rectangle battle array of n rows m row
Row, n and m are non-zero natural number,
Pixel unit described in 1st to n rows is corresponding with scan line described in the 1st to n articles respectively to be connected,
1st to the m row pixel unit is corresponding with data cable described in the 1st to m articles respectively to be connected.
3. display device according to claim 2, wherein,
Pixel unit described in k rows in pixel unit described in n rows respectively as k target line,
Pixel unit described in j rows in pixel unit described in n rows respectively as j reference row,
The gray scale voltage that the balance module receives when being switched on respectively according to the 1st to the j reference row generates j
The equalizing voltage, k and j are non-zero natural number,
In the compensation section before each target line is scanned, the balance module is defeated by a plurality of data lines
Go out one of described j equalizing voltage.
4. display device according to claim 3, wherein, the balance module is respectively according to the 1st to the j reference row
The average value of the gray scale voltage received when switched on generates the j equalizing voltages.
5. display device according to claim 3, wherein, the balance module includes：
Storage unit, during for storing position of the default j reference rows in pixel unit described in n rows and/or conducting
Sequence；
Voltage generating unit is connected with the storage unit, for according to the 1st to the j benchmark being located on pre-stored location
The gray scale voltage that row receives when being switched on generates the j equalizing voltages.
6. display device according to claim 3, wherein, each described image frame includes a sweep phase and one
A compensation section, the compensation section include j compensation subinterval, and the section that compensates is prior to the sweep phase, and the 1st
The row pixel unit is predetermined to be the target line, and pixel unit described in the n-th-j+1 to n rows is predetermined to be presently described image
1st to the j reference row of frame,
The grid electrode drive module is used to scan successively described in the 1st to n rows in the sweep phase of presently described picture frame
Pixel unit is scanned successively,
The balance module is used for the grayscale received when being switched on according to the j reference rows of presently described picture frame
Voltage generates the 1st to the j equalizing voltage of presently described picture frame, and passes through in the 1st to the j compensation subinterval
The a plurality of data lines exports the 1st to the j equalizing voltage of previous described image frame respectively.
7. display device according to claim 3, wherein, each described image frame includes p image subframes, each described
Image subframes include a sweep phase and a compensation section, and p is the natural number more than 1 and n and j are respectively p
Integral multiple, in each described image subframe, prior to the sweep phase, the compensation section includes j/ in the compensation section
P compensation subinterval, pixel unit described in the 1st row in pixel unit described in n/p rows are predetermined to be the target line, n/p rows
Pixel unit described in n-th/p-j/p+1 to n/p rows in the pixel unit be predetermined to be the 1st of presently described image subframes to
The j/p reference rows,
The sweep phase of the grid electrode drive module in each described image subframe scans picture described in n/p rows successively
Plain unit,
The institute that the j/p reference rows of the balance module in presently described image subframes receive when being switched on
It states gray scale voltage and generates the 1st to the j/p equalizing voltage of presently described image subframes and in the 1st to the j/p benefit
Repay the 1st to the j/p equalizing voltage for exporting previous described image subframe in subinterval by a plurality of data lines.
8. the display device according to claim 6 or 7, wherein, the width in each compensation subinterval is equal to often row institute
It states pixel unit and is scanned time once.
9. display device according to claim 1, wherein, the pixel unit includes pixel unit or base based on liquid crystal
In the pixel unit of Organic Light Emitting Diode.
10. a kind of driving method for display device, the display device includes multiple pixel units, each pixel list
Member is connected to receive corresponding gate drive signal with a corresponding scan line, and each pixel unit is corresponding with one
Data cable is connected to receive corresponding gray scale voltage, wherein, the driving method includes：
One picture frame is divided into sweep phase and Non-scanning mode stage；
To a plurality of scan line provide respectively the corresponding gate drive signal in the sweep phase according to certain suitable
Sequence scans each pixel unit successively；
The corresponding gray scale voltage is provided respectively to a plurality of data cable；
At least one equalizing voltage is generated according to selected multiple gray scale voltages；
Compensation section within the Non-scanning mode stage is set, in the compensation section, correspondence is provided to a plurality of data lines
The equalizing voltage.
11. driving method according to claim 10, wherein, the multiple pixel unit is arranged as the rectangle battle array of n rows m row
Row, n and m are non-zero natural number,
Pixel unit described in 1st to n rows is corresponding with scan line described in the 1st to n articles respectively to be connected,
1st to the m row pixel unit is corresponding with data cable described in the 1st to m articles respectively to be connected.
12. driving method according to claim 11, wherein,
For pixel unit described in j rows in pixel unit described in n rows respectively as j reference row, j is non-zero natural number,
The step of multiple gray scale voltages that the basis is selected generate at least one equalizing voltage includes：Respectively according to the 1st
The gray scale voltage received when being switched on to the j reference rows generates the j equalizing voltages.
13. driving method according to claim 12, wherein, each equalizing voltage is led equal to each reference row
The average value of the gray scale voltage received when logical.
14. driving method according to claim 12, wherein,
For pixel unit described in k rows in pixel unit described in n rows respectively as k target line, k is non-zero natural number,
In the compensation section, the step of a plurality of data lines offer corresponding equalizing voltage, is included：
In the compensation section before each target line is scanned, the j equilibrium is provided to a plurality of data lines
One of voltage.
15. driving method according to claim 14, wherein, each described image frame include a sweep phase and
One compensation section, in presently described picture frame,
Pixel unit is scanned successively in the sweep phase described in 1st to n rows,
The compensation section prior to the sweep phase,
Pixel unit described in 1st row is as the target line, and pixel unit is as presently described image described in the n-th-j+1 to n rows
1st to the j reference row of frame,
1st to the j equalizing voltage of presently described picture frame is led according to the j reference rows of presently described picture frame
The gray scale voltage received when logical generates,
The compensation section includes j compensation subinterval, in the 1st to the j compensation subinterval, a plurality of data lines point
The the 1st to the j equalizing voltage of previous described image frame is not received.
16. driving method according to claim 14, wherein, each described image frame includes p image subframes, Mei Gesuo
Stating image subframes includes a sweep phase and a compensation section, and p is the natural number more than 1 and n and j are respectively
The integral multiple of p, in each described image subframe,
Pixel unit is scanned successively in the sweep phase described in n/p rows,
The compensation section prior to the sweep phase,
Pixel unit described in the 1st row in pixel unit described in n/p rows is as the target line, in pixel unit described in n/p rows
N-th/p-j/p+1 to n/p rows described in 1st to the j/p reference row of the pixel unit as presently described image subframes,
Described in the 1st to the j/p equalizing voltage j/p in presently described image subframes of presently described image subframes
The gray scale voltage that reference row receives when being switched on generates,
The compensation section includes j/p compensation subinterval, in the 1st to the j/p compensation subinterval, a plurality of data
Line receives the 1st to the j/p equalizing voltage for receiving previous described image subframe respectively.
17. the driving method according to claim 15 or 16, wherein, the width in each compensation subinterval, which is equal to, often goes
The pixel unit is scanned the time once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074392.4A CN108053800B (en) | 2018-01-25 | 2018-01-25 | Display device and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810074392.4A CN108053800B (en) | 2018-01-25 | 2018-01-25 | Display device and driving method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108053800A true CN108053800A (en) | 2018-05-18 |
| CN108053800B CN108053800B (en) | 2021-10-29 |
Family
ID=62124885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810074392.4A Active CN108053800B (en) | 2018-01-25 | 2018-01-25 | Display device and driving method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108053800B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020004708A (en) * | 2018-06-27 | 2020-01-09 | シャープ株式会社 | Light emitting device, display device, and LED display device |
| CN112017602A (en) * | 2020-09-02 | 2020-12-01 | Tcl华星光电技术有限公司 | Driving method of mini LED backlight module |
| CN116386519A (en) * | 2023-05-09 | 2023-07-04 | 集创北方(成都)科技有限公司 | LED driving circuit, driving method, chip and display device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002351427A (en) * | 2001-05-29 | 2002-12-06 | Matsushita Electric Ind Co Ltd | Device and method for image displaying |
| US20030090452A1 (en) * | 1999-03-16 | 2003-05-15 | Katsuhide Uchino | Liquid crystal display apparatus, its driving method and liquid crystal display system |
| US20030151564A1 (en) * | 2001-10-17 | 2003-08-14 | Junichi Yamashita | Display apparatus |
| JP2005115395A (en) * | 1999-11-09 | 2005-04-28 | Sharp Corp | Image display and its driving method |
| JP2006259224A (en) * | 2005-03-17 | 2006-09-28 | Sony Corp | Active matrix display apparatus |
| JP2006308712A (en) * | 2005-04-27 | 2006-11-09 | Sony Corp | Display device and precharging method of display device |
| CN1871633A (en) * | 2003-08-22 | 2006-11-29 | 索尼株式会社 | Image display device, image display panel, panel drive device, and image display panel drive method |
| JP2008170686A (en) * | 2007-01-11 | 2008-07-24 | Sony Corp | Liquid crystal display device, driving method of liquid crystal display device and electronic equipment |
| CN101414089A (en) * | 2008-11-24 | 2009-04-22 | 上海广电光电子有限公司 | Method for driving liquid crystal display apparatus |
| CN104299552A (en) * | 2013-07-18 | 2015-01-21 | 三星显示有限公司 | Display device and driving method thereof |
-
2018
- 2018-01-25 CN CN201810074392.4A patent/CN108053800B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030090452A1 (en) * | 1999-03-16 | 2003-05-15 | Katsuhide Uchino | Liquid crystal display apparatus, its driving method and liquid crystal display system |
| JP2005115395A (en) * | 1999-11-09 | 2005-04-28 | Sharp Corp | Image display and its driving method |
| JP2002351427A (en) * | 2001-05-29 | 2002-12-06 | Matsushita Electric Ind Co Ltd | Device and method for image displaying |
| US20030151564A1 (en) * | 2001-10-17 | 2003-08-14 | Junichi Yamashita | Display apparatus |
| CN1871633A (en) * | 2003-08-22 | 2006-11-29 | 索尼株式会社 | Image display device, image display panel, panel drive device, and image display panel drive method |
| JP2006259224A (en) * | 2005-03-17 | 2006-09-28 | Sony Corp | Active matrix display apparatus |
| JP2006308712A (en) * | 2005-04-27 | 2006-11-09 | Sony Corp | Display device and precharging method of display device |
| JP2008170686A (en) * | 2007-01-11 | 2008-07-24 | Sony Corp | Liquid crystal display device, driving method of liquid crystal display device and electronic equipment |
| CN101414089A (en) * | 2008-11-24 | 2009-04-22 | 上海广电光电子有限公司 | Method for driving liquid crystal display apparatus |
| CN104299552A (en) * | 2013-07-18 | 2015-01-21 | 三星显示有限公司 | Display device and driving method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020004708A (en) * | 2018-06-27 | 2020-01-09 | シャープ株式会社 | Light emitting device, display device, and LED display device |
| CN112017602A (en) * | 2020-09-02 | 2020-12-01 | Tcl华星光电技术有限公司 | Driving method of mini LED backlight module |
| WO2022047922A1 (en) * | 2020-09-02 | 2022-03-10 | Tcl华星光电技术有限公司 | Driving method for mini led backlight module |
| US11694642B2 (en) | 2020-09-02 | 2023-07-04 | Tcl China Star Optoelectronics Technology Co., Ltd. | Method for driving mini-LED backlight module |
| CN116386519A (en) * | 2023-05-09 | 2023-07-04 | 集创北方(成都)科技有限公司 | LED driving circuit, driving method, chip and display device |
| CN116386519B (en) * | 2023-05-09 | 2023-10-24 | 集创北方(成都)科技有限公司 | LED driving circuit, driving method, chip and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108053800B (en) | 2021-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8299995B2 (en) | Liquid crystal display and method of controlling common voltage thereof | |
| CN109903725A (en) | The display equipment of brightness can be changed according to operating frequency | |
| CN101751885B (en) | Liquid crystal display device and its driving method | |
| US7864155B2 (en) | Display control circuit, display control method, and liquid crystal display device | |
| US8456406B2 (en) | Liquid crystal display and driving method with black voltage charging | |
| JP4891682B2 (en) | Liquid crystal display device and driving method thereof | |
| CN107665692B (en) | Pixel driving circuit and pixel driving method of liquid crystal display | |
| CN109961741A (en) | Organic light-emitting diode (OLED) display apparatus | |
| US20050078076A1 (en) | Scan driver, display device having the same, and method of driving display device | |
| EP1865489A2 (en) | Liquid crystal display device and integrated circuit chip therefor | |
| CN111883079B (en) | Driving method and circuit of display panel and display device | |
| US20080204397A1 (en) | Backlight device and liquid crystal display device having the same | |
| CN101281714A (en) | Display device | |
| CN106652932B (en) | Liquid crystal display device and its driving method | |
| US20060170639A1 (en) | Display control circuit, display control method, and liquid crystal display device | |
| US20100123647A1 (en) | Display apparatus and method of driving the same | |
| CN108227192A (en) | Display device | |
| US20080316162A1 (en) | Liquid crystal display and driving method thereof | |
| CN101281716B (en) | Display device | |
| CN1941060A (en) | Liquid crystal display device | |
| US20170103723A1 (en) | Display device and driving method thereof | |
| CN108053800A (en) | Display device and its driving method | |
| CN112785979B (en) | Driving method and system of OLED display panel | |
| US8736640B2 (en) | Liquid crystal display apparatus and method for driving the same | |
| CN102800281A (en) | Drive method and drive device for optimizing power dissipation of AMOLED panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |