CN104318889B - Drive method and circuit of display panel and display device - Google Patents
Drive method and circuit of display panel and display device Download PDFInfo
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- CN104318889B CN104318889B CN201410645226.7A CN201410645226A CN104318889B CN 104318889 B CN104318889 B CN 104318889B CN 201410645226 A CN201410645226 A CN 201410645226A CN 104318889 B CN104318889 B CN 104318889B
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- monochrome information
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Abstract
The invention provides a drive method and circuit of a display panel and a display device and belongs to the field of display technologies. The drive method of the display panel includes the steps that when a test picture is displayed, brightness information of a preset region is obtained; according to the obtained brightness information, a gate drive signal of the preset region is modulated; a modulated gate drive signal is input into pixels of the preset region. According to the technical scheme, the problem that transverse stripes occur when a pure color picture is displayed on the display panel is solved.
Description
Technical field
The present invention relates to display technology field, particularly relate to a kind of driving method of display floater and drive circuit, display
Device.
Background technology
At present, in display field, the application of FPD combination is more and more extensive, along with the application of large-scale combination
It is the unremitting pursuit to the splicing extremely narrow piece of product for the panel vendor, current piece had been introduced into less than the 4mm epoch.As Fig. 1 institute
Show, the existing design adopting x printed circuit board (PCB) 1+y printed circuit board (PCB) 2 for the display floater being spliced, wherein 3 is effective
Viewing area.Being gradually reduced with piece, the frame of display floater also comes narrower, and the region leaving fan section wiring for is also more next
Narrower, the routing resistance of display floater zones of different so can be led to mismatch, the pixel charge rate of zones of different is uneven, enters
And lead to fringe phenomena.As shown in Fig. 2 the wiring resistance due to first area 4, second area 5, the 3rd region 6, the 4th region 7
Anti- mismatch, leads to that travers be x-block phenomenon when showing pure color picture.
Prior art is typically by optimizing wiring, raising gate (grid) improves routing resistance to modes such as cut-in voltages
Joining property and pixel charge rate, but because the frame of display floater is more and more narrow, leave the space of fan section Wiring optimization for already not
Foot；And improve rising and the reduction in drive circuit life-span that gate necessarily leads to power consumption to cut-in voltage.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of driving method of display floater and drive circuit, display dress
Put, can solve the problem that the problem of travers when showing pure color picture in display floater.
For solving above-mentioned technical problem, embodiments of the invention provide technical scheme as follows:
On the one hand, provide a kind of driving method of display floater, comprising:
When showing test pictures, obtain the monochrome information of predeterminable area；
Monochrome information according to obtaining is modulated to the gate drive signal of predeterminable area；
Gate drive signal after modulation is input in the pixel of predeterminable area.
Further, described predeterminable area includes a line or multirow pixel.
Further, the described monochrome information obtaining predeterminable area includes:
Gather the pictorial information of described test pictures by data acquisition equipment；
The pictorial information collecting is processed, obtains the monochrome information of predeterminable area.
Further, described according to obtain monochrome information the gate drive signal of predeterminable area is modulated including:
Monochrome information according to obtaining determines the corresponding waveform modulating signal of the gate drive signal of predeterminable area；
According to corresponding waveform modulating signal, the gate drive signal of predeterminable area is modulated.
Further, the described monochrome information according to acquisition determines that the corresponding waveform of the gate drive signal of predeterminable area is adjusted
Signal processed includes:
The default table of comparisons is searched according to the monochrome information obtaining, the monochrome information that is stored with the described table of comparisons is adjusted with waveform
Corresponding relation between signal processed, using corresponding for the monochrome information of predeterminable area waveform modulating signal as predeterminable area grid
The corresponding waveform modulating signal of drive signal.
Further, the grey decision-making of described test pictures is 127.
The embodiment of the present invention additionally provides a kind of drive circuit of display floater, comprising:
Processing module, for when showing test pictures, obtaining the monochrome information of predeterminable area；
Modulation module, for being modulated to the gate drive signal of predeterminable area according to the monochrome information obtaining；
Output module, for being input to the gate drive signal after modulation in the pixel of predeterminable area.
Further, described processing module includes:
Collecting unit, for gathering the pictorial information of described test pictures by data acquisition equipment；
Computing unit, for processing to the pictorial information collecting, obtains the monochrome information of predeterminable area.
Further, described modulation module includes:
Searching unit, for determining that according to the monochrome information obtaining the corresponding waveform of the gate drive signal of predeterminable area is adjusted
Signal processed；
Signal processing unit, for adjusting to the gate drive signal of predeterminable area according to corresponding waveform modulating signal
System
Further, described modulation module also includes:
Memory cell, for storing the default table of comparisons, the monochrome information that is stored with the described table of comparisons is believed with waveform modulated
Corresponding relation between number；
Described searching unit searches the described table of comparisons specifically for the monochrome information according to acquisition, by the brightness of predeterminable area
The corresponding waveform modulating signal of information is as the corresponding waveform modulating signal of gate drive signal of predeterminable area.
Further, described signal processing unit includes electric capacity, diode, the first phase inverter and the second phase inverter, wherein:
The inverting input of described first phase inverter is connected with waveform modulating signal input, described first phase inverter anti-
Phase input is also connected with the output end of described first phase inverter, the normal phase input end of described first phase inverter and high level output
End connects, and the normal phase input end of described first phase inverter is also grounded, and the output end of described first phase inverter passes through electric capacity and grid
Drive signal output end connects；
The inverting input of described second phase inverter is connected with the output end of described second phase inverter, described second phase inverter
Normal phase input end be connected with fixed level output end, the normal phase input end of described second phase inverter is also grounded, and described second is anti-
The output end of phase device is connected with described gate drive signal output end by diode.
The embodiment of the present invention additionally provides a kind of display device, including the drive circuit of display floater as above.
Embodiments of the invention have the advantages that
In such scheme, when showing test pictures, obtain the monochrome information in region, according to the monochrome information obtaining to area
The gate drive signal in domain is modulated, and afterwards the gate drive signal after modulation is input in the pixel in region.The present invention
Technical scheme according to the monochrome information in region, gate drive signal is modulated, and then adjust pixel charging interval,
Thus reaching equilibrium brightness, reduction or the effect eliminating x-block.Technical scheme not need to increase display floater
Power consumption, and do not interfere with the life-span of product.
Brief description
Fig. 1 is the structural representation of display floater in prior art；
Fig. 2 is the schematic diagram that in prior art, travers when showing pure color picture in display floater；
Fig. 3 is the schematic flow sheet of the driving method of display floater of the embodiment of the present invention；
Fig. 4 is the structural representation of the drive circuit of display floater of the embodiment of the present invention；
Fig. 5 is the electrical block diagram of the signal processing unit of the embodiment of the present invention；
Fig. 6 is the waveform diagram of oe2 signal, von1 signal and mlg output signal in structure shown in Fig. 5；
Fig. 7 is the waveform diagram of the oe2 signal in each region in the specific embodiment of the invention；
Fig. 8 is the schematic diagram that the embodiment of the present invention eliminates travers when showing pure color picture.
Specific embodiment
For making embodiments of the invention technical problem to be solved, technical scheme and advantage clearer, below in conjunction with
Drawings and the specific embodiments are described in detail.
Embodiments of the invention provide a kind of driving method of display floater and drive circuit, display device, can solve the problem that
The problem of travers when showing pure color picture in display floater.
Embodiment one
Fig. 3 is the schematic flow sheet of the driving method of the present embodiment display floater, as shown in figure 3, the present embodiment includes:
Step 101: when showing test pictures, obtain the monochrome information of predeterminable area；
Wherein, test pictures are pure color picture, and specifically, the grey decision-making of test pictures can be 127.Predeterminable area is permissible
Including a line or multirow pixel, the pictorial information of data acquisition equipment such as high-definition camera collecting test picture can be passed through,
The pictorial information collecting is processed, obtains the monochrome information in each region.
Step 102: the monochrome information according to obtaining is modulated to the gate drive signal of predeterminable area；
Specifically, the monochrome information in region can be sent to data processor, such as tcon (regularly by data acquisition equipment
Device/counter control register) or soc (system level chip), searched pre- according to the monochrome information obtaining by data processor
If the table of comparisons, the corresponding relation being stored with this table of comparisons between monochrome information and waveform modulating signal, different brightness letters
The waveform modulating signal of the corresponding different in width of breath, using corresponding for the monochrome information of predeterminable area waveform modulating signal as preset areas
The corresponding waveform modulating signal of gate drive signal in domain, according to the raster data model to predeterminable area for the corresponding waveform modulating signal
Signal is modulated.
Step 103: the gate drive signal after modulation is input in the pixel of predeterminable area.
Because the waveform modulating signal using different in width is modulated to gate drive signal, therefore gate drive signal
Waveform also therefore change, and then have adjusted respective pixel charging interval such that it is able to equilibrium zones of different brightness.
The present embodiment, when showing test pictures, obtains the monochrome information in region, according to the monochrome information obtaining to region
Gate drive signal be modulated, afterwards by modulation after gate drive signal be input in the pixel in region.The present invention's
Technical scheme is modulated to gate drive signal according to the monochrome information in region, and then adjusts the charging interval of pixel, from
And reach equilibrium brightness, reduction or the effect eliminating x-block.Technical scheme not need to increase display floater
Power consumption, and do not interfere with the life-span of product.
Embodiment two
Present embodiments provide a kind of drive circuit of display floater, as shown in figure 4, the present embodiment includes:
Processing module, for when showing test pictures, obtaining the monochrome information of predeterminable area；
Modulation module, for being modulated to the gate drive signal of predeterminable area according to the monochrome information obtaining；
Output module, for being input to the gate drive signal after modulation in the pixel of predeterminable area.
Further, described processing module includes:
Collecting unit, for gathering the pictorial information of described test pictures by data acquisition equipment；
Computing unit, for processing to the pictorial information collecting, obtains the monochrome information of predeterminable area.
Further, described modulation module includes:
Searching unit, for determining that according to the monochrome information obtaining the corresponding waveform of the gate drive signal of predeterminable area is adjusted
Signal processed, specifically, searching unit can be data processor, tcon (timer/counter control register) or soc
(system level chip)；
Signal processing unit, for adjusting to the gate drive signal of predeterminable area according to corresponding waveform modulating signal
System
Further, described signal processing unit includes electric capacity, diode, the first phase inverter and the second phase inverter, wherein:
The inverting input of described first phase inverter is connected with waveform modulating signal input, described first phase inverter anti-
Phase input is also connected with the output end of described first phase inverter, the normal phase input end of described first phase inverter and high level output
End connects, and the normal phase input end of described first phase inverter is also grounded, and the output end of described first phase inverter passes through electric capacity and grid
Drive signal output end connects；
The inverting input of described second phase inverter is connected with the output end of described second phase inverter, described second phase inverter
Normal phase input end be connected with fixed level output end, the normal phase input end of described second phase inverter is also grounded, and described second is anti-
The output end of phase device is connected with described gate drive signal output end by diode.
Specifically, signal processing unit electrical block diagram as shown in figure 5, include phase inverter f1, phase inverter f2,
Resistance r1, r2, r3, r4, r5 and r6, electric capacity c, diode d.Wherein, the inverting input of phase inverter f1 and waveform modulating signal
It is connected with r1 between oe2 input, between the inverting input of phase inverter f1 and output end, be connected with r2, the positive of phase inverter f1
It is connected with r3 between input and high level avdd output end, be connected between the normal phase input end of phase inverter f1 and earth point
R4, is connected with electric capacity c between the output end of phase inverter f1 and gate drive signal mlg output end；
The inverting input of phase inverter f2 is connected with output end, and the normal phase input end of phase inverter f2 is defeated with fixed level von1
Go out and be connected with r5 between end, between the normal phase input end of phase inverter f2 and earth point, be connected with r6, the output end of phase inverter f2 with
It is connected with diode d between gate drive signal mlg output end.
Fig. 6 be structure shown in Fig. 5 in oe2 signal, von1 signal and mlg output signal waveform diagram it can be seen that
Mlg output signal and the opposite polarity of oe2 signal.
Further, described modulation module also includes:
Memory cell, for storing the default table of comparisons, the monochrome information that is stored with the described table of comparisons is believed with waveform modulated
Corresponding relation between number；
Described searching unit searches the described table of comparisons specifically for the monochrome information according to acquisition, by the brightness of predeterminable area
The corresponding waveform modulating signal of information is as the corresponding waveform modulating signal of gate drive signal of predeterminable area.
Embodiment three
The embodiment of the present invention additionally provides a kind of display device, including the drive circuit of above-mentioned display floater.Wherein, show
Show structure and the same above-described embodiment of operation principle of the drive circuit of panel, will not be described here.In addition, display device other
Partial structure may be referred to prior art, and this is not described in detail herein.This display device can be: liquid crystal panel, electricity
Sub- paper, LCD TV, liquid crystal display, DPF, mobile phone, panel computer etc. have product or the portion of any display function
Part.
Example IV
The driving method of the display floater of the present embodiment comprises the following steps:
Step a: when display floater shows the pure color picture that grey decision-making is 127, different rows are gathered by high-definition camera
Display brightness, specifically, as shown in Fig. 2 the first area 4 of display floater, second area 5, the 3rd region 6, the 4th region 7
Wiring impedance mismatch, the display brightness in each region is identical, and the display brightness of zones of different is different, leads in not same district
Travers in the intersection in domain, gathers first area 4, second area 5, the 3rd region 6, the 4th area by high-definition camera
The display brightness in domain 7；
Step b: be stored with tcon/soc the default table of comparisons, the display brightness that is stored with this table of comparisons is adjusted with waveform
Corresponding relation between signal oe2 processed, the waveform modulating signal oe2 of the corresponding different in width of different display brightness, according to comparison
The display brightness in first area 4, second area 5, the 3rd region 6, the 4th region 7 is converted to the waveform of different in width by table respectively
Modulated signal oe2, as shown in Figure 7；
Step c: the waveform modulating signal oe2 of zones of different is inputted circuit as shown in Figure 5, original to each region
Gate drive signal is modulated, and obtains finally entering the gate drive signal in each area pixel.Waveform modulating signal
Oe2 is in the time that low level time determining modulation post tensioned unbonded prestressed concrete drive signal is in high level, and then determines respective pixel
Charging interval, using waveform modulating signal oe2, gate drive signal is modulated, can adjust respective pixel charging when
Between；
Step d: by modulation after gate drive signal be separately input to first area 4, second area 5, the 3rd region 6,
In the pixel in the 4th region 7, drive corresponding gate electrode, the charging interval due to pixel is adjusted, such that it is able to reach
Equilibrium brightness, reduction or the effect eliminating x-block, as shown in Figure 8.
This many functional part described in this description is all referred to as module, specifically to emphasize its realization side
The independence of formula.
In the embodiment of the present invention, module can be realized with software, so that by various types of computing devices.Citing comes
Say, the executable code module of a mark can include one or more physics or the logical block of computer instruction, citing
For, it can be built as object, process or function.Even so, the executable code of institute's mark module is without physically
It is located together, but can include being stored in different different instructions physically, when being combined together in these command logics
When, its regulation purpose constituting module and realizing this module.
In fact, executable code module can be individual instructions or many bar instructions, and even can be distributed
On multiple different code segments, it is distributed in the middle of distinct program, and cross over multiple memory devices distributions.Similarly, grasp
Make data to be identified in module, and can realize according to any suitable form and be organized in any suitable class
In the data structure of type.Described peration data can be collected as individual data collection, or can be distributed on diverse location
(including in different storage device), and electronic signal can be only used as at least in part be present on system or network.
When module can be realized using software it is contemplated that the level of existing hardware technique is it is possible to implemented in software
Module, in the case of not considering cost, those skilled in the art can build corresponding hardware circuit come to realize correspond to
Function, described hardware circuit include routine ultra-large integrated (vlsi) circuit or gate array and such as logic core
The existing semiconductor of piece, transistor etc or other discrete element.Module can also use programmable hardware device, such as
Field programmable gate array, programmable logic array, programmable logic device etc. are realized.
In each method embodiment of the present invention, the priority that the sequence number of described each step can not be used for limiting each step is suitable
Sequence, for those of ordinary skill in the art, on the premise of not paying creative work, the priority change to each step
Within protection scope of the present invention.
The above is the preferred embodiment of the present invention it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of driving method of display floater is it is characterised in that include:
When showing test pictures, obtain the monochrome information of predeterminable area；
Monochrome information according to obtaining is modulated to the gate drive signal of predeterminable area；
Gate drive signal after modulation is input in the pixel of predeterminable area；
Described according to obtain monochrome information the gate drive signal of predeterminable area is modulated including:
Monochrome information according to obtaining determines the corresponding waveform modulating signal of the gate drive signal of predeterminable area；
According to corresponding waveform modulating signal, the gate drive signal of predeterminable area is modulated.
2. display floater according to claim 1 driving method it is characterised in that described predeterminable area include a line or
Multirow pixel.
3. the driving method of display floater according to claim 2 is it is characterised in that the brightness of described acquisition predeterminable area
Information includes:
Gather the pictorial information of described test pictures by data acquisition equipment；
The pictorial information collecting is processed, obtains the monochrome information of predeterminable area.
4. display floater according to claim 1 driving method it is characterised in that described according to obtain monochrome information
Determine that the corresponding waveform modulating signal of gate drive signal of predeterminable area includes:
The default table of comparisons is searched according to the monochrome information obtaining, the monochrome information that is stored with the described table of comparisons is believed with waveform modulated
Corresponding relation between number, using corresponding for the monochrome information of predeterminable area waveform modulating signal as predeterminable area raster data model
The corresponding waveform modulating signal of signal.
5. the driving method of the display floater according to any one of claim 1-4 is it is characterised in that described test pictures
Grey decision-making be 127.
6. a kind of drive circuit of display floater is it is characterised in that include:
Processing module, for when showing test pictures, obtaining the monochrome information of predeterminable area；
Modulation module, for being modulated to the gate drive signal of predeterminable area according to the monochrome information obtaining；
Output module, for being input to the gate drive signal after modulation in the pixel of predeterminable area；
Described modulation module includes:
Searching unit, for determining that according to the monochrome information obtaining the corresponding waveform modulated of the gate drive signal of predeterminable area is believed
Number；
Signal processing unit, for being modulated to the gate drive signal of predeterminable area according to corresponding waveform modulating signal.
7. the drive circuit of display floater according to claim 6 is it is characterised in that described processing module includes:
Collecting unit, for gathering the pictorial information of described test pictures by data acquisition equipment；
Computing unit, for processing to the pictorial information collecting, obtains the monochrome information of predeterminable area.
8. the drive circuit of display floater according to claim 6 is it is characterised in that described modulation module also includes:
Memory cell, for storing the default table of comparisons, the monochrome information that is stored with the described table of comparisons and waveform modulating signal it
Between corresponding relation；
Described searching unit searches the described table of comparisons specifically for the monochrome information according to acquisition, by the monochrome information of predeterminable area
Corresponding waveform modulating signal is as the corresponding waveform modulating signal of gate drive signal of predeterminable area.
9. the drive circuit of display floater according to claim 6 is it is characterised in that described signal processing unit includes electricity
Appearance, diode, the first phase inverter and the second phase inverter, wherein:
The inverting input of described first phase inverter is connected with waveform modulating signal input, described first phase inverter anti-phase defeated
Enter end to be also connected with the output end of described first phase inverter, the normal phase input end of described first phase inverter is with high level output end even
Connect, the normal phase input end of described first phase inverter is also grounded, the output end of described first phase inverter passes through electric capacity and raster data model
Signal output part connects；
The inverting input of described second phase inverter is connected with the output end of described second phase inverter, and described second phase inverter is just
Phase input is connected with fixed level output end, and the normal phase input end of described second phase inverter is also grounded, described second phase inverter
Output end be connected with described gate drive signal output end by diode.
10. a kind of display device is it is characterised in that include the driving of the display floater as any one of claim 6-9
Circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410645226.7A CN104318889B (en) | 2014-11-12 | 2014-11-12 | Drive method and circuit of display panel and display device |
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| CN201410645226.7A CN104318889B (en) | 2014-11-12 | 2014-11-12 | Drive method and circuit of display panel and display device |
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| CN111999936B (en) | 2020-08-27 | 2021-04-27 | 深圳市华星光电半导体显示技术有限公司 | Backlight module and display device |
| CN113920952B (en) * | 2021-10-20 | 2023-03-14 | 京东方科技集团股份有限公司 | Electronic paper debugging method, electronic paper, debugging system and equipment |
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| CN1983365B (en) * | 2002-04-26 | 2011-05-18 | 东芝松下显示技术有限公司 | Drive circuit for electroluminescence display screen |
| JP2006091681A (en) * | 2004-09-27 | 2006-04-06 | Hitachi Displays Ltd | Display device and display method |
| JP2009025735A (en) * | 2007-07-23 | 2009-02-05 | Hitachi Displays Ltd | Image display device |
| JP5407138B2 (en) * | 2007-11-28 | 2014-02-05 | ソニー株式会社 | Display device, manufacturing method thereof, and manufacturing apparatus |
| TW201007660A (en) * | 2008-08-08 | 2010-02-16 | Chunghwa Picture Tubes Ltd | Display driving circuit and driving method thereof |
| CN103310752B (en) * | 2013-06-05 | 2015-07-22 | 合肥京东方光电科技有限公司 | Gamma voltage adjusting method and gamma voltage adjusting system |
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