CN106531100A - Display device and driving method - Google Patents
Display device and driving method Download PDFInfo
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- CN106531100A CN106531100A CN201611160796.2A CN201611160796A CN106531100A CN 106531100 A CN106531100 A CN 106531100A CN 201611160796 A CN201611160796 A CN 201611160796A CN 106531100 A CN106531100 A CN 106531100A
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- drive circuit
- scan line
- gia
- circuit
- circuits
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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
- G09G3/34—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
Abstract
The present invention discloses a display device and a driving method. The display device comprises a display panel and a source driving circuit. The display panel is composed of a plurality of pixel units, a plurality of scanning lines, a plurality of data lines and a plurality of gate driving circuits. Each row of the pixel units is correspondingly connected with one scanning line. Each column of the pixel units is correspondingly connected with one data line. The plurality of gate driving circuits are used for supplying first driving signals to the plurality of scanning lines. The source driving circuit is used for supplying second driving signals to the plurality of data lines. Each scanning line is connected with two gate driving circuits. Compared with the prior art, in the low-temperature condition, each pixel unit of the display device can be simultaneously driven by a circuit better in driving capability. Therefore, the narrow-frame effect is realized based on the integrated gate driving circuit technology, while the defect that transistors in the display device are not stable and low in reliability is overcome at the same time.
Description
Technical field
The present invention relates to display technology field, more particularly to display device and driving method.
Background technology
At present, to possess frivolous, energy-conservation, radiationless etc. all for liquid crystal indicator (Liquid Crystal Display, LCD)
Many advantages, are widely used at notebook computer, desktop computer, shot with video-corder, intelligent television, mobile terminal or individual digital
On the products such as reason device.So that liquid crystal indicator is applied on mobile phone as an example, on the premise of the given volume of mobile phone, user is general
Wish that screen can be big as far as possible, therefore how to realize that the narrow frame of display device becomes the widely studied direction of industry and chases after
The target asked.
As a example by with thin film transistor (TFT) (Thin Film Transistor, TFT) liquid crystal indicator, which includes liquid crystal display
Panel, gate driver circuit (gate drive circuit) and source drive
Circuit (source drive circuit).Display panels include that a plurality of horizontal scan line is vertical with a plurality of
Data wire, and two adjacent scan lines intersect to form a pixel cell with two adjacent data lines, each pixel list
Unit includes a thin film transistor (TFT), and every scan line is connected to the grid of every row thin film transistor (TFT), is connected to often per data line
The source electrode of row thin film transistor (TFT), the drain electrode of thin film transistor (TFT) are connected with pixel electrode, and every scan line and every data line
The other end is connected respectively in liquid crystal indicator in the grid drive chip at liquid crystal panel edge and source driving chip.
With the development of display device, people are to realizing the demand also more and more higher of the display device of narrow frame.Passing
In the display device of system, edge cabling of the scan line by the display floater left and right sides, every scan line is on the side of display floater
Edge is connected with grid drive chip (Gate IC) by a cabling.Fill by 1280 × 720 liquid crystal display of a resolution
Example is set to, fringe region cabling of 720 scan lines in the left and right sides of display panels, unilateral scan line cabling is had
Then have 360 (i.e. 720/2), according to the width of every scan line cabling be 5 microns, per the interval between two scan line cablings
Calculate for 5 microns, the overall width of unilateral scan line cabling will 1.8 millimeters, this width makes display device be difficult to reach
The requirement of narrow frame.In order to realize the narrow frame of liquid crystal indicator, prior art also adopts GIA circuits (gate driver
In array, integrated gate drive circuitry) replacing the cabling of above-mentioned scan line, by gate driver circuit is integrated into display
On panel, thousands of cablings can not only be reduced, cause display device more symmetrical and compact, moreover it is possible to reduces cost, be carried
The resolution ratio and bending degree of high display floater.However, GIA circuits easily cause because of the impact of environment it is unstable, such as when GIA is electric
When road works at low ambient temperatures, the threshold voltage of the transistor (such as TFT) in GIA circuits can occur to drift about and cause circuit
Do not work.Therefore, existing GIA circuits cannot be applied to the field for having high request to circuit reliability and stability, for example
Onboard system field.
In view of the above, it is necessary to which a kind of display dress of achievable narrow side frame for possessing reliability and stability is provided
Put and its driving method.
The content of the invention
The main technical problem to be solved in the present invention is to provide a kind of achievable narrow side for possessing reliability and stability
The display floater and its gate drive circuit unit of frame.
According to an aspect of the present invention, there is provided a kind of display device, including：Display floater, which includes being arranged in array
Multiple pixel cells, multi-strip scanning line, a plurality of data lines and multiple gate driver circuits, often go the pixel cell and
Described in bar, scan line correspondence connects, and pixel cell described in each column is corresponding with data wire to be connected, the plurality of grid drive
Dynamic circuit is for the multi-strip scanning line the first drive signal of offer；And source electrode drive circuit, for the display surface
The a plurality of data lines of plate provides the second drive signal, and the source electrode drive circuit provides control to the plurality of gate driver circuit
Signal, wherein, it is connected with two gate driver circuits per scan line described in bar.
Preferably, the plurality of gate driver circuit includes that multiple first grid drive circuits and multiple second grids drive
Circuit, is respectively 1 first grid drive circuit with two gate driver circuits being connected per scan line described in bar
With 1 second grid drive circuit.
Preferably, the pixel cell place face of the display floater has first edge area and second edge area, respectively
The individual gate driver circuit is located at the first edge area or the second edge area.
Preferably, the display device also includes temperature sensor, and the source electrode drive circuit is according to being passed by the temperature
The temperature signal that sensor is provided exports the control signal.
According to a further aspect in the invention, a kind of driving method of arbitrary display device as above is also provided, including：
Set up right with a first grid drive circuit and a second grid drive circuit per scan line described in bar
Answer annexation；Pixel cell described in each row is gated successively by the multi-strip scanning line；And by a plurality of data lines
The pixel cell is driven.
Preferably, pixel cell described in each row is gated successively by the multi-strip scanning line, including：Specifying needs gating
Scan line；The first grid drive circuit and/or the second grid that unlatching is connected with the appointed scan line drives
Dynamic circuit so that the appointed scan line is strobed；And repeat the above steps, the multi-strip scanning line is selected successively
It is logical.
Preferably, it is described to open the first grid drive circuit and/or institute being connected with the appointed scan line
The unlatching step for stating second grid drive circuit includes：Detection environment temperature；Judge environment temperature whether less than boundary temperature；Root
It is judged that the first grid drive circuit that is connected with the appointed scan line of output control and the second grid are driven
The open and close of dynamic circuit.
Preferably, the first grid being connected with the appointed scan line according to judged result control is driven
The step of open and close of circuit and the second grid drive circuit, includes：When the environment temperature is not less than the border
During temperature, the first grid drive circuit and/or second grid drive being connected with the appointed scan line is opened
Dynamic circuit；When the environment temperature is less than the boundary temperature, while opening the institute being connected with the appointed scan line
First grid drive circuit is stated with the second grid drive circuit.
Preferably, the first grid being connected with the appointed scan line according to judged result control is driven
The step of open and close of circuit and the second grid drive circuit, includes：Each second grid drive circuit is set
Driving force higher than each first grid drive circuit driving force；When the environment temperature is not less than the border
During temperature, the first grid drive circuit and/or second grid drive being connected with the appointed scan line is opened
Dynamic circuit；When the environment temperature is less than the boundary temperature, unlatching be connected with the appointed scan line described the
The first grid drive circuit that two gate driver circuits, closing are connected with the appointed scan line.
Preferably, when the environment temperature is not less than the boundary temperature, the unlatching and the appointed scanning
The step of connected first grid drive circuit of line and/or the second grid drive circuit, includes：
The first grid drive circuit and the second grid being connected with the appointed scan line is opened alternately
Drive circuit.
The invention has the beneficial effects as follows, it is compared to prior art, under cryogenic, every in the display device of the present invention
Individual pixel cell can be by the circuit drives with higher driving force, so as to realize the same of narrow frame using GIA technologies
When, overcome the unstability of transistor in display device and the impact of low reliability.
Description of the drawings
By description referring to the drawings to the embodiment of the present invention, the above-mentioned and other purposes of the present invention, feature and
Advantage will be apparent from.
Fig. 1 illustrates the structural representation of traditional display device.
Fig. 2 illustrates the structural representation of the display device according to prior art.
Fig. 3 a illustrate GIA circuit outputs when working under -20 DEG C of environment temperature according to the display device of prior art
The waveform diagram of grid voltage.
Fig. 3 b illustrate GIA circuit outputs when working under -30 DEG C of environment temperature according to the display device of prior art
The waveform diagram of grid voltage.
Fig. 4 illustrates the structural representation of display device according to a first embodiment of the present invention.
Fig. 5 illustrates the structural representation of display device according to a second embodiment of the present invention.
When Fig. 6 a illustrate that display device according to embodiments of the present invention works under -20 DEG C of environment temperature, GIA circuits are defeated
The waveform diagram of the grid voltage for going out.
When Fig. 6 b illustrate that display device according to embodiments of the present invention works under -30 DEG C of environment temperature, GIA circuits are defeated
The waveform diagram of the grid voltage for going out.
Fig. 7 illustrates the part schematic flow sheet of the driving method of display floater according to a third embodiment of the present invention.
Fig. 8 illustrates the part schematic flow sheet of the driving method of display floater according to a fourth embodiment of the present invention.
Fig. 9 illustrates the part schematic flow sheet of the driving method of display floater according to a fifth embodiment of the present invention.
Specific embodiment
The present invention is more fully described hereinafter with reference to accompanying drawing.In various figures, identical element is attached using what is be similar to
Icon is remembered to represent.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.Additionally, may not show in figure
Go out part known to some.
Describe hereinafter many specific details of the present invention, the structure of such as device, material, size, place's science and engineering
Skill and technology, to be more clearly understood that the present invention.But just as the skilled person will understand, can not press
The present invention is realized according to these specific details.
Fig. 1 illustrates the structural representation of traditional display device.
As shown in figure 1, traditional display device 100 includes that display floater 110, source electrode drive circuit 120 and grid drive
Dynamic circuit 130.Display floater 110 includes m × n pixel cell 111, n bar scan lines G [1] to G [n] for lining up m n array
And m data line S [1] to S [m], natural numbers of the m and n respectively more than or equal to 1.Picture is included in each pixel cell 111
Plain electrode and the transistor for the on or off pixel electrode, the transistor are, for example, thin film transistor (TFT) (thin-
film transistor,TFT).In display floater 110, positioned at the same a line (horizontal stroke of " OK " for example shown in corresponding diagram
To direction) pixel cell in each transistor grid be connected and to display floater fringe region draw a scan line, n
Row pixel cell alternately draws scan line G [1] to G [n] to the fringe region of 110 both sides of display floater；It is (described positioned at same row
The longitudinal direction of " arranging " for example shown in corresponding diagram) pixel cell in the source electrode of each transistor be connected and draw a data
Line, m row pixel cell draw data wire S [1] to S [m] respectively；In each pixel cell, drain electrode and the pixel electrode phase of transistor
Even.Source electrode drive circuit 120 is that data wire S [1] to S [m] provides the second drive signal, for pixel cell output GTG electricity
Pressure, gate driver circuit 130 are that scan line G [1] provides the first drive signal to G [n], for controlling the choosing of each row pixel cell
Logical and shut-off.Source electrode drive circuit 120 and gate driver circuit 130 can respectively by source driving chip (Source IC) with
Grid drive chip (Gate IC) is realized.
The cabling of partial pixel unit, part of scanning line and the segment data line of display device 100 is illustrate only in Fig. 1
Figure, in actual production with design, by taking liquid crystal indicator of the resolution for 1280 × 720 as an example, has 720 scannings
Fringe region cabling of the line in the left and right sides of display panels, unilateral scan line cabling then have 360 (i.e. 720/2),
Width according to every scan line cabling is 5 microns, per between two scan line cablings at intervals of 5 microns calculating, it is unilateral
Scan line cabling overall width will 1.8 millimeters, this width makes display device be difficult to reach the requirement of narrow frame.
Fig. 2 illustrates the structural representation of the display device according to prior art.
In order to realize the narrow frame of display device, prior art adopts integrated gate drive circuitry (gate driver in
Array, GIA) improving the cabling of above-mentioned scan line.
As shown in Fig. 2 display floater 210 and source electrode drive circuit 220 are included according to the display device 200 of prior art,
Due to using GIA technologies, without the need in the independent raster data model of 210 outer setting of display floater for traditional display device
Circuit (grid drive chip of such as monolithic), therefore save cost.Display floater 210 includes the m × n for lining up m n array
Individual pixel cell 211, n bar scan lines G [1] to G [n], m data line S [1] to S [m] and it is connected with n bar scan lines respectively
N GIA circuit 212, natural numbers of the m and n respectively more than or equal to 1.In each pixel cell 211 include pixel electrode and
For the transistor of the on or off pixel electrode, the transistor is, for example, thin film transistor (TFT) (thin-film
transistor,TFT).In display floater 210, positioned at same a line (the horizontal side of " OK " for example shown in corresponding diagram
To) pixel cell in each transistor grid be connected and to display floater fringe region draw a scan line, n row pictures
Plain unit alternately draws scan line G [1] to G [n], every scan line and 1 GIA to the fringe region of 210 both sides of display floater
Circuit is corresponded to and is connected, so as to n GIA circuit is alternately distributed in the both sides of display floater；Positioned at same row (described " arranging " for example
Longitudinal direction shown in corresponding diagram) pixel cell in the source electrode of each transistor be connected and draw a data line, m row pictures
Plain unit draws data wire S [1] to S [m] respectively；In each pixel cell, the drain electrode of transistor is connected with pixel electrode.Below with
N be even number as a example by illustrate.(such as display floater shown in Fig. 2 in first fringe region of display floater 210
210 left fields), each GIA circuits are arranged in order to the order of (n-1)th GIA circuit according to the 1st GIA circuit respectively, and the 1st
Individual GIA circuits receive the first control signal provided by source electrode drive circuit 220, and (n-1)th GIA circuit receives source drive electricity
The clock signal of the offer of road 220 simultaneously produces the time sequence information exported to the n-th -3 GIA circuits according to the clock signal, and n-th -5
Individual GIA circuits produce the time sequence information of output to the n-th -7 GIA circuits according to its time sequence information for receiving, by that analogy, its
In, time sequence information is transmitted by holding wire between two adjacent GIA circuits；In another fringe region of display floater 210
Interior (such as 210 right side area of display floater shown in Fig. 2), each GIA circuits are respectively according to the 2nd GIA circuit to n-th
The order of GIA circuits is sequentially arranged, the second control signal that the 2nd GIA circuits reception is provided by source electrode drive circuit 220, and n-th
Individual GIA circuits receive the clock signal of the offer of source electrode drive circuit 220 and produce output to the n-th -2 according to the clock signal
The time sequence information of GIA circuits, the n-th -4 GIA circuits produce output to the n-th -6 GIA electricity according to its time sequence information for receiving
The time sequence information on road, by that analogy, wherein, time sequence information is transmitted by holding wire between two adjacent GIA circuits.Source electrode drives
Dynamic circuit 220 is that data wire S [1] to S [m] provides data-signal, for applying gray scale voltage to pixel cell.Source drive electricity
Can be realized by source driving chip (Source IC) on road 220.
The advantage of the display device of above-mentioned prior art is：By gate driver circuit is integrated on display floater, no
Cabling quantity can only be reduced, cause display device more symmetrical and compact, moreover it is possible to reduces cost, the resolution of raising display floater
Rate and bending degree.However, the display device 200 of prior art also has the following disadvantages：GIA circuits are easily led because of the impact of environment
Cause is unstable, such as when GIA circuits are worked at low ambient temperatures, the threshold voltage of the transistor (such as TFT) in GIA circuits
Can occur to drift about and cause circuit not work；The life-span of GIA circuits has limitation, therefore is chronically at the GIA of working condition
Circuit is susceptible to exception.
Fig. 3 a and Fig. 3 b are shown respectively GIA circuits when worked according to the display device of prior art at different ambient temperatures
The waveform diagram of the grid voltage of output.The corresponding environment temperatures of Fig. 3 a are -20 DEG C, and the corresponding environment temperatures of Fig. 3 b are -30
℃。
As shown in Figure 3 a, can be by correspondence under -20 DEG C of environment temperature T according to the GIA circuits of above-mentioned prior art
Scan line export normal grid voltage VG so that the corresponding pixel cell of the scan line is correctly driven.However, working as ring
When border temperature T is less than boundary temperature (such as the environment temperature shown in Fig. 3 b -30 DEG C of situation), according to above-mentioned prior art
The threshold voltage of the transistor (such as TFT) in GIA circuits can occur drift, so as to the GIA circuits are by corresponding scan line
The grid voltage VG for being exported will appear from exception, cause corresponding pixel cell cisco unity malfunction, the i.e. display of display device
Go wrong.It can thus be seen that cannot be applied to circuit reliability and stability according to the GIA circuits of above-mentioned prior art
Field with high request, such as onboard system field.
Therefore, although GIA technologies can realize the display device of narrow frame, but the low reliability due to GIA circuits and
Low stability, the display device of prior art may not apply to be had to reliability and stability in the field of high request, such as car
Loading system field.
It is an object of the invention to provide a kind of dress of the display with high stability and reliability that can realize narrow frame
Put.
Below, the present invention is described in detail referring to the drawings.
Fig. 4 illustrates the structural representation of display device according to a first embodiment of the present invention.
Illustrate so that the display floater is as display panels as an example in the present embodiment, but be not limited thereto, this shows
Show that panel can also for example be organic LED display panel (organic light emitting diode display
Panel) etc..
As shown in figure 4, the display device 300 of first embodiment of the invention includes display floater 310, source electrode drive circuit
320, due to using GIA technologies, without the need in the independent grid of 310 outer setting of display floater for traditional display device
Drive circuit, therefore save cost.Display floater 310 includes lining up the m × n pixel cell 311 of m n array, n bars and sweeps
Retouch line G [1] to G [n], m data line S [1] to S [m] and the 312 (figure of n main GIA circuit being connected with n bar scan lines respectively
GIA0 is shown as in 4), be connected with n bar scan lines respectively n auxiliary GIA circuits 313 (GIA1 is shown as in Fig. 4), m and n is respectively
Natural number more than or equal to 1.Pixel electrode is included in each pixel cell 311 and for the on or off pixel electrode
Transistor, the transistor are, for example, thin film transistor (TFT) (thin-film transistor, TFT).In display floater 310,
The grid phase of each transistor in the pixel cell of same a line (" OK " for example corresponds to the horizontal direction shown in Fig. 4)
Same scan line is connected to, every scan line is respectively to first edge area (such as display floater shown in Fig. 4 of display floater
310 left field) and second edge area (such as the right side area of the display floater 310 shown in Fig. 4) extraction.
In the first edge area of display floater 310：The corresponding each scan line difference of pixel cell of odd-numbered line
Main GIA circuits corresponding with 1 312 (GIA0 is shown as in Fig. 4) are connected, the corresponding each scan line point of pixel cell of even number line
Auxiliary GIA circuits 313 (GIA1 is shown as in Fig. 4) not corresponding with 1 are connected；Each main GIA circuit is according to corresponding pixel list
The order is expert at by unit is arranged in order, and transmits related sequential letter by main signal line between two adjacent main GIA circuits 312
Breath, the main GIA circuits of the 1st row pixel cell of correspondence receive the first control signal Vs1 provided by source electrode drive circuit 320, right
The main GIA circuits 312 of last odd-line pixels unit are answered to receive the first sequential letter provided by source electrode drive circuit 320
Number；The order is expert at according to corresponding pixel cell by each auxiliary GIA circuit 313 is arranged in order, two adjacent auxiliary GIA
Related time sequence information, the auxiliary GIA circuit 313 of the 2nd row pixel cell of correspondence are transmitted by auxiliary signal line between circuit 313
The second control signal Vs2 that reception is provided by source electrode drive circuit 320, corresponds to the auxiliary of last even rows unit
GIA circuits 313 receive the second clock signal provided by source electrode drive circuit 320.
In the second edge area of display floater 310：The corresponding each scan line difference of pixel cell of even number line
Main GIA circuits corresponding with 1 312 (GIA0 is shown as in Fig. 4) are connected, the corresponding each scan line point of pixel cell of odd-numbered line
Auxiliary GIA circuits 313 (GIA1 is shown as in Fig. 4) not corresponding with 1 are connected；Each main GIA circuit is according to corresponding pixel list
The order is expert at by unit is arranged in order, and transmits related sequential letter by main signal line between two adjacent main GIA circuits 312
Breath, the main GIA circuits of the 2nd row pixel cell of correspondence receive the 3rd control signal Vs3 provided by source electrode drive circuit 320, right
The main GIA circuits 312 of last even rows unit are answered to receive the second sequential letter provided by source electrode drive circuit 320
Number；The order is expert at according to corresponding pixel cell by each auxiliary GIA circuit 313 is arranged in order, two adjacent auxiliary GIA
Related time sequence information, the auxiliary GIA circuit 313 of the 1st row pixel cell of correspondence are transmitted by auxiliary signal line between circuit 313
The 4th control signal Vs4 that reception is provided by source electrode drive circuit 320, corresponds to the auxiliary of last odd-line pixels unit
GIA circuits 313 receive the first clock signal provided by source electrode drive circuit 320.
Each main GIA circuit 312 in embodiment of the present invention display floater 310 aids in the inside of GIA circuits 313 with each
Structure can be with identical, it is also possible to according to actual needs to main GIA circuits and auxiliary GIA circuits in structure and/or in parameter
Carry out difference design.
When display device 300 works, each pixel cell in display floater can be simultaneously by 1 coupled master
GIA circuits and 1 auxiliary GIA circuit drives.Crystal in the first row pixel cell for example shown in Fig. 4 in each pixel cell
The grid of pipe is simultaneously with 1 main GIA circuit 312 positioned at 310 first edge area of display floater and positioned at display floater 310 second
1 auxiliary GIA circuit 313 of marginal zone is connected, so as to while narrow frame is realized using GIA technologies, by improving source electrode
Drive circuit 320 driving force of each pixel cell 311 is overcome in display device the unstability of transistor with it is low can
By the impact of property.
Fig. 5 illustrates the structural representation of display device according to a second embodiment of the present invention.
As shown in figure 5, the display device 400 of second embodiment of the invention includes display floater 410, source electrode drive circuit
420 and temperature sensor 440.Temperature sensor 440 provides temperature to source electrode drive circuit 420 according to the environment temperature for detecting
Signal t_ctl.Source electrode drive circuit 420 exports first control signal Vs1 extremely to display floater 410 according to temperature signal t_ctl
4th control signal Vs4.Display floater 410 includes m × n pixel cell 411, n bar scan lines G [1] for lining up m n array
N main GIA circuit 412 being connected with n bar scan lines to G [n], m data line S [1] to S [m] and respectively (is shown as in Fig. 5
GIA0), be connected with n bar scan lines respectively n auxiliary GIA circuits 413 (GIA1 is shown as in Fig. 5), m and n respectively more than etc.
In 1 natural number.Pixel electrode and the crystal for the on or off pixel electrode are included in each pixel cell 411
Pipe, the transistor are, for example, thin film transistor (TFT) (thin-film transistor, TFT).In display floater 410, it is located at
The grid of each transistor in the pixel cell of same a line (" OK " for example corresponds to the horizontal direction shown in Fig. 5) is connected to
Same scan line, every scan line is respectively to first edge area (such as display floater 410 shown in Fig. 5 of display floater
Left field) and second edge area (such as the right side area of the display floater 410 shown in Fig. 5) draw respectively.
In the first edge area of display floater 410 with the second edge area, each scan line, main GIA circuits 412
And the position relationship of auxiliary GIA circuits 413 is identical with annexation, will not be described here.
From the source electrode unlike the display device 300 of first embodiment of the invention, in the display device 400 of the present embodiment
Drive circuit 420 receives the temperature signal t_ctl from temperature sensor 440, and drives display according to temperature signal t_ctl
Each pixel cell in panel 410, so as to realize two kinds of mode of operations so that display device at low ambient temperatures can be normal
Work.
What source electrode drive circuit 420 pairs was received is judged by the temperature signal t_ctl that temperature sensor 440 is provided,
When temperature sensor 440 detects environment temperature is not less than boundary temperature (for example, -20 DEG C), display device 400 carries out
One mode of operation, i.e.,：Source electrode drive circuit 420 to display floater 410 in all auxiliary GIA circuit outputs it is invalid second control
Signal Vs2 processed and the 4th control signal Vs4 so that each auxiliary GIA circuit does not work, to display floater 410 in main GIA it is electric
Road exports effective first control signal Vs1 and the 3rd control signal Vs3 so that each main GIA normal circuit operation.Now, show
Transistor in showing device 400 when temperature is not less than boundary temperature can normal work, merely with main GIA circuits 412
The normal function of display device 400 is realized, therefore by turning off each auxiliary GIA circuit to reduce power consumption.
When temperature sensor 440 detects environment temperature less than boundary temperature (for example, -20 DEG C), display device 400
The second mode of operation is carried out, i.e.,：Source electrode drive circuit 420 to display floater 410 in all auxiliary GIA circuit outputs it is effective
Second control signal Vs2 and the 4th control signal Vs4 so that each auxiliary GIA circuit work, to the master in display floater 410
Effective first control signal Vs1 of GIA circuit outputs and the 3rd control signal Vs3 are so that each main GIA normal circuit operation.
This temperature is less than in the case of boundary temperature, although the unstable properties of the transistor in display device 400, but due to aobvious
Show that each pixel cell in panel 410 can be while be driven by 1 coupled main GIA circuit and 1 auxiliary GIA circuit
It is dynamic, so as to improve source electrode drive circuit 420 to the driving force of each pixel cell 411, overcome crystal in display device
The unstability of pipe and the impact of low reliability, enable the steady operation at low ambient temperatures of display device 400.
The present embodiment is by carrying out judging to enable display device 400 to realize two kinds according to the difference of temperature to environment temperature
Mode of operation, while narrow frame is realized using GIA technologies, by improving source electrode drive circuit 420 to each pixel cell
411 driving force overcomes the unstability of transistor in display device and the impact of low reliability, and with the present invention the
One embodiment is compared, and is reduced display device and is worked at a normal temperature the power consumption of generation.
In the second embodiment of the invention described above, at a normal temperature, source electrode drive circuit 420 only turns on each main GIA
Circuit and turn off each auxiliary GIA circuits.Due to the restricted lifetime of the transistor in display device, therefore in the invention described above
In two embodiments, when using up in the life-span of main GIA circuits, auxiliary GIA circuits are not also fully utilized.In view of this, as one
Alternative embodiment is planted, when temperature is not less than boundary temperature (for example, -20 DEG C), source electrode drive circuit 420 is by the first control
Control signals Vs4 of signal Vs1 to the 4th processed control main GIA circuits with auxiliary GIA circuit alternations, i.e. source electrode drive circuit
420 export effective first control signal Vs1 in the first time period of an alternate cycle is caused with the 3rd control signal Vs3
The first invalid control signal Vs2 of each main GIA normal circuit operation, output causes each to aid in the 4th control signal Vs4
GIA circuits do not work, and in the remaining second time period of the alternate cycle export invalid the first control signal Vs1 and the 3rd
Control signal Vs3 causes each main GIA circuit not work, export effective first control signal Vs2 and the 4th control signal Vs4
So that each auxiliary GIA normal circuit operation, repeats the alternate cycle when temperature is not less than boundary temperature such that it is able to
Extend the service life of whole display device.
In each embodiment of the invention described above, each the main GIA circuit in display floater is interior with each auxiliary GIA circuit
Portion's structure can be with identical, it is also possible to according to actual needs to main GIA circuits and auxiliary GIA circuits in structure and/or parameter
On carry out difference design.For example, each auxiliary GIA circuit is improved so that auxiliary GIA circuits can be less than border temperature
To each pixel cell driven in display floater in the environment of degree.Using the auxiliary GIA circuit after the improvement, as upper
Another kind of alternative embodiment of second embodiment of the invention is stated, when temperature is not less than boundary temperature, source electrode drive circuit is only
Drive main GIA circuits and turn off auxiliary GIA circuits, and when temperature is less than boundary temperature, source electrode drive circuit only drives auxiliary
GIA circuits and turn off main GIA circuits so that display device in temperature less than the auxiliary under conditions of boundary temperature using improvement
GIA normal circuit operations.
It should be noted that " odd-numbered line " described in the various embodiments described above can be exchanged with " even number line ".And
And, each main GIA circuit is not limited to only corresponding driving one-row pixels unit with each auxiliary GIA circuit, it is also possible to by sequential
The driving of multirow pixel cell is realized in design.
Fig. 6 a and Fig. 6 b are shown respectively GIA when display device according to embodiments of the present invention is worked at different ambient temperatures
The waveform diagram of the grid voltage of circuit output.The corresponding environment temperatures of Fig. 6 a are -20 DEG C, the corresponding environment temperatures of Fig. 6 b
For -30 DEG C.
As shown in figures 6 a and 6b, the environment of GIA circuits according to embodiments of the present invention at -20 DEG C and less than -20 DEG C
At temperature T, (such as -30 DEG C) can export normal grid voltage VG by corresponding scan line, so that the scan line pair
The pixel cell answered correctly is driven.Compared to prior art, the embodiment of the present invention solves GIA circuits at low temperature cannot be just
Often drive the problem of respective pixel unit, therefore display device according to embodiments of the present invention be applied to circuit reliability
There is the field of high request, such as onboard system field with stability.
Fig. 7 illustrates the part schematic flow sheet of the driving method of display floater according to a third embodiment of the present invention.
In the driving method of the display floater of third embodiment of the invention, the display floater includes forming many of array
Individual pixel cell, multi-strip scanning line and a plurality of data lines, often row pixel cell connection corresponding with scan line, each column pixel
Unit connection corresponding with a data line.The method for driving display floater mainly includes following three steps.
Step one, the corresponding connection for setting up GIA circuits main with 1 and 1 auxiliary GIA circuit per scan line described in bar are closed
System.
Step 2, gates pixel cell described in each row in the array successively by the multi-strip scanning line.Here is walked
In rapid, the scan line for needing gating is specified first, and the main GIA circuits that make to be connected with the appointed scan line and/or auxiliary
GIA circuits are helped to be turned on and off, the GIA circuits of unlatching are strobed can its corresponding scan line.Repeat this process so that
The scan line corresponding to each row pixel cell in the array is strobed successively.
Step 3, each the described pixel cell scan line being strobed connected by a plurality of data lines
It is driven, so as to realize the driving of display floater.
As shown in fig. 7, step 2 includes step S501 to S504.
In step S501, environment temperature is detected.
In step S502, judge environment temperature whether less than boundary temperature.If environment temperature is not less than boundary temperature,
Then execution step S503；If environment temperature is less than boundary temperature, execution step S504.The boundary temperature is, for example, -20
℃。
In step S503, main GIA circuits are driven, simultaneously turn off auxiliary GIA circuits.Due under this temperature environment,
Main GIA circuits can independent normal work, thus close off auxiliary GIA circuits to save power consumption.
In step S504, while main GIA circuits and auxiliary GIA circuits are driven, so that each pixel cell is by two
GIA circuit drives, it is to avoid display floater exception occurs because of low temperature.
Fig. 8 illustrates the part schematic flow sheet of the driving method of display floater according to a fourth embodiment of the present invention.
In the driving method of the display floater of fourth embodiment of the invention, the display floater includes forming many of array
Individual pixel cell, multi-strip scanning line and a plurality of data lines, often row pixel cell connection corresponding with scan line, each column pixel
Unit connection corresponding with a data line.The method for driving display floater mainly includes following three steps.
Step one, the corresponding connection for setting up GIA circuits main with 1 and 1 auxiliary GIA circuit per scan line described in bar are closed
System.
Step 2, gates pixel cell described in each row in the array successively by the multi-strip scanning line.Here is walked
In rapid, the scan line for needing gating is specified first, and the main GIA circuits that make to be connected with the appointed scan line and/or auxiliary
GIA circuits are helped to be turned on and off, the GIA circuits of unlatching are strobed can its corresponding scan line.Repeat this process so that
The scan line corresponding to each row pixel cell in the array is strobed successively.
Step 3, each the described pixel cell scan line being strobed connected by a plurality of data lines
It is driven, so as to realize the driving of display floater.
As shown in figure 8, step 2 includes step S601 to S604.Step S601 to S602 and third embodiment of the invention
Unanimously.
In step s 601, detect environment temperature.
In step S602, judge environment temperature whether less than boundary temperature.If environment temperature is not less than boundary temperature,
Then execution step S603；If environment temperature is less than boundary temperature, execution step S604.The boundary temperature is, for example, -20
℃。
In step S603, alternating opens main GIA circuits and auxiliary GIA circuits.Due to the longevity of the transistor in GIA circuits
Life is limited, therefore in the invention described above 3rd embodiment, when using up in the life-span of main GIA circuits, auxiliary GIA circuits also not by
Make full use of.In view of this, when temperature is not less than boundary temperature (for example, -20 DEG C), alternating opens main GIA circuits and auxiliary
GIA circuits can balance the utilization rate of the two such that it is able to extend the service life of whole display floater.
In step s 604, while driving main GIA circuits and auxiliary GIA circuits, so that each pixel cell is by two
GIA circuit drives, it is to avoid display floater exception occurs because of low temperature.
Fig. 9 illustrates the part schematic flow sheet of the driving method of display floater according to a fifth embodiment of the present invention.
In the driving method of the display floater of fifth embodiment of the invention, the display floater includes forming many of array
Individual pixel cell, multi-strip scanning line and a plurality of data lines, often row pixel cell connection corresponding with scan line, each column pixel
Unit connection corresponding with a data line.The method for driving display floater mainly includes following three steps.
Step one, the corresponding connection for setting up GIA circuits main with 1 and 1 auxiliary GIA circuit per scan line described in bar are closed
System.Wherein, the auxiliary GIA circuits are set there is low temperature resistant characteristic.
Step 2, gates pixel cell described in each row in the array successively by the multi-strip scanning line.Here is walked
In rapid, the scan line for needing gating is specified first, and the main GIA circuits that make to be connected with the appointed scan line or auxiliary
GIA circuits are turned on and off, and the GIA circuits of unlatching are strobed can its corresponding scan line.Repeat this process so that institute
State the scan line corresponding to each row pixel cell in array to be strobed successively.
Step 3, each the described pixel cell scan line being strobed connected by a plurality of data lines
It is driven, so as to realize the driving of display floater.
As shown in figure 9, step 2 includes step S701 to S704.
In step s 701, detect environment temperature.
In step S702, judge environment temperature whether less than boundary temperature.If environment temperature is not less than boundary temperature,
Then execution step S703；If environment temperature is less than boundary temperature, execution step S704.The boundary temperature is, for example, -20
℃。
In step S703, main GIA circuits are opened, simultaneously close off auxiliary GIA circuits.Due under this temperature environment,
Main GIA circuits can independent normal work, thus close off auxiliary GIA circuits to save power consumption.As a kind of alternative embodiment,
Main GIA circuits and auxiliary GIA circuits can also alternately be opened to extend the service life of whole display floater.
In step S704, open auxiliary GIA circuits and close main GIA circuits, so that each pixel under low temperature environment
Unit can be by the auxiliary GIA circuit drives with low temperature tolerance characteristicses, it is to avoid display floater exception occurs because of low temperature.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation are made a distinction with another entity or operation, and are not necessarily required or implied these entities or deposit between operating
In any this actual relation or order.And, term " including ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that a series of process, method, article or equipment including key elements not only will including those
Element, but also including other key elements being not expressly set out, or also include for this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element for being limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
According to embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, not yet
It is only described specific embodiment to limit the invention.Obviously, as described above, can make many modifications and variations.This explanation
These embodiments are chosen and specifically described to book, is for the principle and practical application of preferably explaining the present invention, 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 only receives right
The restriction of claim and its four corner and equivalent.
Claims (10)
1. a kind of display device, including：Display floater is multiple pixel cells which includes being arranged in array, multi-strip scanning line, more
Data line and multiple gate driver circuits, the pixel cell of often going is corresponding with scan line to be connected, each column institute
State pixel cell connection corresponding with data wire, the plurality of gate driver circuit is for carrying to the multi-strip scanning line
For the first drive signal；And
Source electrode drive circuit, provides the second drive signal, the source drive for a plurality of data lines to the display floater
Circuit provides control signal to the plurality of gate driver circuit, it is characterised in that per scan line described in bar with two grid
Pole drive circuit is connected.
2. display device according to claim 1, it is characterised in that the plurality of gate driver circuit includes multiple first
Gate driver circuit and multiple second grid drive circuits, with two gate driver circuits being connected per scan line described in bar
The respectively 1 first grid drive circuit and 1 second grid drive circuit.
3. display device according to claim 2, it is characterised in that the pixel cell place face of the display floater
With first edge area and second edge area, each described gate driver circuit is located at the first edge area or second side
Edge area.
4. display device according to claim 1, it is characterised in that the display device also includes temperature sensor, institute
State source electrode drive circuit and the control signal is exported according to the temperature signal provided by the temperature sensor.
5. it is a kind of such as the driving method of arbitrary display device in Claims 1-4, it is characterised in that to include：Set up per described in bar
Scan line and a first grid drive circuit and the corresponding annexation of a second grid drive circuit；
Pixel cell described in each row is gated successively by the multi-strip scanning line；And
The pixel cell is driven by a plurality of data lines.
6. driving method according to claim 5, it is characterised in that each row institute is gated successively by the multi-strip scanning line
Pixel cell is stated, including：
Specifying needs the scan line of gating；
The first grid drive circuit and/or the second grid that unlatching is connected with the appointed scan line drives electricity
Road so that the appointed scan line is strobed；And
Repeat the above steps, make the multi-strip scanning line be gated successively.
7. driving method according to claim 6, it is characterised in that the unlatching is connected with the appointed scan line
The first grid drive circuit and/or the unlatching step of the second grid drive circuit include：
Detection environment temperature；
Judge environment temperature whether less than boundary temperature；
According to the first grid drive circuit and described second that judged result control is connected with the appointed scan line
The open and close of gate driver circuit.
8. driving method according to claim 7, it is characterised in that described to be controlled according to judged result and appointed institute
State scan line be connected the first grid drive circuit and the second grid drive circuit open and close the step of wrap
Include：
When the environment temperature is not less than the boundary temperature, described first be connected with the appointed scan line is opened
Gate driver circuit and/or the second grid drive circuit；
When the environment temperature is less than the boundary temperature, while opening described the be connected with the appointed scan line
One gate driver circuit and the second grid drive circuit.
9. driving method according to claim 7, it is characterised in that described to be controlled according to judged result and appointed institute
State scan line be connected the first grid drive circuit and the second grid drive circuit open and close the step of wrap
Include：
The driving of the driving force higher than each first grid drive circuit of each second grid drive circuit is set
Ability；
When the environment temperature is not less than the boundary temperature, described first be connected with the appointed scan line is opened
Gate driver circuit and/or the second grid drive circuit；
When the environment temperature is less than the boundary temperature, the second gate being connected with the appointed scan line is opened
The first grid drive circuit that pole drive circuit, closing are connected with the appointed scan line.
10. driving method according to claim 8 or claim 9, it is characterised in that when the environment temperature is not less than the border
During temperature, the first grid drive circuit and/or the second gate that the unlatching is connected with the appointed scan line
The step of pole drive circuit, includes：
The first grid drive circuit and second grid driving being connected with the appointed scan line is opened alternately
Circuit.
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| CN201611160796.2A CN106531100B (en) | 2016-12-15 | 2016-12-15 | Display device and driving method |
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|---|---|---|---|
| CN201611160796.2A CN106531100B (en) | 2016-12-15 | 2016-12-15 | Display device and driving method |
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| CN109920378A (en) * | 2017-12-12 | 2019-06-21 | 乐金显示有限公司 | Gate drivers and display device including the gate drivers |
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| CN112489558A (en) * | 2019-09-11 | 2021-03-12 | 矽创电子股份有限公司 | Display panel driving chip, display panel driving structure and display device thereof |
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| CN106531100B (en) | 2019-04-02 |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |