CN106297707A - A kind of display panels and drive circuit thereof - Google Patents
A kind of display panels and drive circuit thereof Download PDFInfo
- Publication number
- CN106297707A CN106297707A CN201610804863.3A CN201610804863A CN106297707A CN 106297707 A CN106297707 A CN 106297707A CN 201610804863 A CN201610804863 A CN 201610804863A CN 106297707 A CN106297707 A CN 106297707A
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- China
- Prior art keywords
- electric capacity
- capacitance
- pixel
- circuit
- scan line
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- 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.)
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a kind of display panels and drive circuit thereof, this drive circuit includes: scan line, wherein, every scan line is provided with predetermined capacitance electric capacity near source driving signal one end, keeps voltage differences in order to reduce the pixel electrode caused because of signal delay.The present invention can reduce the pixel electrode caused because of signal delay and keep voltage differences.
Description
Technical field
The invention belongs to LCD Controller technical field, specifically, particularly relate to a kind of display panels and
Drive circuit.
Background technology
Lightening, low-power consumption etc. is the development trend of display panels in existing market.Based on to high number of pixels and
The higher demand of the aspects such as low-power consumption so that the RC in display floater postpones all the more serious, thereby results in panel picture and shows not
All, display effect is affected.
In order to reduce the power consumption of display floater, array base palte row cutting GOA (Gate on array) mostly is staggered driving.
Scanning minimum voltage VGL at panel is bigger with scanning ceiling voltage VGH pressure reduction and effectively display AA district RC is bigger
In the case of, display panels display inequality can be caused.
Summary of the invention
For solving problem above, the invention provides a kind of display panels and drive circuit thereof, in order to reduce because of letter
Number pixel electrode that delay causes keeps voltage differences.
According to an aspect of the invention, it is provided a kind of liquid crystal display panel drive circuit, including:
Scan line,
Wherein, every scan line is provided with predetermined capacitance electric capacity near source driving signal one end, in order to reduce because of letter
Number postpone and the pixel electrode that causes keeps voltage differences.
According to one embodiment of present invention, every scan line is provided with predetermined capacitance electric capacity described in predetermined quantity,
Wherein, described predetermined quantity is less than the pixel quantity of every scanning line driving.
According to one embodiment of present invention, every scan line is provided with a described predetermined capacitance electric capacity.
According to one embodiment of present invention, the front end in the first order pixel of every scanning line driving is provided with described pre-
Constant volume value electric capacity.
According to one embodiment of present invention, the capacitance of described predetermined capacitance electric capacity is set to the pixel correspondence of prearranged multiple
The capacitance of equivalent circuit.
According to one embodiment of present invention, every scan line is provided with multiple described predetermined capacitance electric capacity.
According to one embodiment of present invention, the close source driving signal one driven according to driving order every scan line
In the predetermined number of pixels of end, it is each provided with predetermined capacitance electric capacity described in one in close source driving signal one end of every grade of pixel.
According to one embodiment of present invention, the capacitance of the described predetermined capacitance electric capacity of predetermined quantity is set as equal.
According to one embodiment of present invention, the capacitance of the described predetermined capacitance electric capacity of predetermined quantity is set as, presses
According to the scan line driving order to colleague's pixel, the capacitance of described predetermined capacitance electric capacity is set near source driving signal one end
Start to successively decrease successively.
According to another aspect of the present invention, a kind of employing display panels with described circuit is additionally provided.
Beneficial effects of the present invention:
The present invention, by arranging electric capacity in the front end of every scan line to increase scan line front end RC value, can reduce because believing
Number pixel electrode that delay causes keeps voltage differences.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or understand by implementing the present invention.The purpose of the present invention and other advantages can be by description, rights
Structure specifically noted in claim and accompanying drawing realizes and obtains.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, required in embodiment being described below
Accompanying drawing does simply to be introduced:
Fig. 1 is that in prior art, a kind of display floater commonly uses driven circuit diagram；
Fig. 2 is the pixel drive voltage of panel diverse location shown in Fig. 1 and pixel voltage change schematic diagram；
Fig. 3 is the pixel equivalent circuit schematic diagram of effective display area in existing panel；
Fig. 4 is electrical block diagram according to an embodiment of the invention；
Fig. 5 is electrical block diagram according to another embodiment of the invention；
Fig. 6 is the electrical block diagram of the 3rd embodiment according to the present invention.
Detailed description of the invention
Describe embodiments of the present invention in detail below with reference to drawings and Examples, whereby how the present invention is applied
Technological means solves technical problem, and the process that realizes reaching technique effect can fully understand and implement according to this.Need explanation
As long as not constituting conflict, each embodiment in the present invention and each feature in each embodiment can be combined with each other,
The technical scheme formed is all within protection scope of the present invention.
In display panels, signal increases along with the capacitance resistance passed through, and can cause signal delay effect.At Fig. 1
Shown interleaved drive circuit drives in schematic diagram, and PixelA, PixelB, PixelC therein represent what this drive circuit drove
Each pixel.Scanning signal is after multistage pixel, and it postpones effect and increases accordingly, such as the diverse location pixel in Fig. 2
The scanning signal waveforms that PixelA, PixelB, PixelC are corresponding.Owing to scanning the delay effect of signal, cause pixel electrode
Voltage after feedthrough is different.Such as diverse location pixel PixelA in Fig. 2, pixel electrode that PixelB, PixelC are corresponding
Voltage oscillogram, wherein, Δ Va is more than Δ Vc more than Δ Vb, so that display floater presents display difference on colleague.
Concrete, panel is effectively shown, and the resolution in AA district is set as X*Y, wherein, X and Y represents the row of pixel cell
Number and columns, each pixel cell of line direction includes 3 pixels of RGB.Each pixel is equivalent to a RC circuit, such as Fig. 3
Shown in.In this case, scanning signal is by AA district altogether through 3Y RC circuit, and the delayed sweep of its correspondence is Δ s=
3YAR*C, wherein A is constant.Pixel the most at the same level is because the difference of delayed sweep, and the current potential causing final pixel to keep is different.
As the feed-trough voltage of N level pixel is expressed as:
Wherein,B is constant, and Cgs represents grid source capacitance, and Cst represents storage electric capacity, Clc table
Showing that liquid crystal capacitance, N represent driving number of pixels, R represents each pixel equivalent circuit resistance, and C represents equivalent circuit capacitance, VGH table
Showing scanning signal high level, VGL represents scanning signal low level.
The voltage difference that first order pixel is caused by feedthrough with N level pixel is expressed as:
Wherein,For constant, from formula (2) it can be seen that only traversing of probe delayed impact
The feed-trough voltage difference of scanning circuit front and back end pixel.
Analyze based on above, the invention provides a kind of liquid crystal display panel drive circuit, in order to effectively to reduce because of signal
The pixel electrode postponing to cause keeps the difference of voltage.It is illustrated in figure 4 drive circuit according to an embodiment of the invention
Structural representation, below with reference to Fig. 4, the present invention is described in detail.
The liquid crystal display panel drive circuit of the present invention includes scan line, wherein, near driving letter in every scan line
Number one end, source (i.e. In end) is provided with predetermined capacitance electric capacity, keeps voltage in order to reduce the pixel electrode caused because of signal delay
Difference.By arranging predetermined capacitance electric capacity, before scan line can being increased scan line front end (i.e. near source driving signal one end)
End RC value, thus reduce front end pixel holding voltage and the difference of rear end pixel holding voltage, and then improve scanning-line signal and prolong
The display inequality problem caused late.
In one embodiment of the invention, every scan line is provided with the predetermined capacitance electric capacity of predetermined quantity, its
In, predetermined quantity herein is less than the pixel quantity of every scanning line driving, in order to coordinate the partial pixel in one-row pixels.?
In one embodiment of the present of invention, every scan line is provided with a predetermined capacitance electric capacity.By this predetermined capacitance electric capacity
Can reduce front end pixel keeps voltage and rear end pixel to keep the difference of voltage.
In one embodiment of the invention, the front end in the first order pixel of every scanning line driving is provided with pre-constant volume
Value electric capacity.Concrete, as shown in Figure 4, one electric capacity is set in the front end of the first order pixel of this scanning line driving, in dotted line
Shown in.The equivalent RC circuit parallel connection that one end of this electric capacity is corresponding with the first pixel, the other end is connected with ground wire.
In one embodiment of the invention, the capacitance of predetermined capacitance electric capacity is set to the pixel correspondence equivalence of prearranged multiple
The capacitance of circuit.The capacitance of predetermined capacitance electric capacity is such as set to (M-1) C, and as shown in Figure 4, wherein, C represents every scanning
The capacitance of equivalent circuit corresponding to first order pixel that line drives, M > 1, and the value that M is in span are the bigger the better.This
The capacitance of predetermined capacitance electric capacity is set to (M-1) capacitance C again by place, mainly for convenience of calculation.In front end, (M-1) is set
During the electric capacity of C so that first order pixel is poor with the feed-trough voltage of N level pixel isBy in scan line first
Level pixel front end arranges electric capacity, it is possible to reduce the holding voltage differences of first order pixel and afterbody pixel, simultaneously can also
Reduce the holding voltage differences of other grade of pixel and afterbody pixel.
In one embodiment of the invention, every scan line is provided with multiple predetermined capacitance electric capacity.Concrete, as
Shown in Fig. 5.By arranging multiple predetermined capacitance electric capacity, it is also possible to reduce the holding voltage difference of pixel at different levels and afterbody pixel
Different.
In one embodiment of the invention, the close source driving signal one driven according to driving order every scan line
In the predetermined number of pixels of end, it is each provided with a predetermined capacitance electric capacity in close source driving signal one end of every grade of pixel.Such as Fig. 5
Shown in, the front end of pixels at different levels is provided with a predetermined capacitance electric capacity, can preferably reduce pixel at different levels and afterbody
The holding voltage differences of pixel.
In one embodiment of the invention, the capacitance of the predetermined capacitance electric capacity of predetermined quantity is set as equal.Such as Fig. 5 institute
Showing, the capacitance of each predetermined capacitance electric capacity is set as KC, wherein, C represents that the pixels at different levels of every scanning line driving are corresponding
The capacitance of equivalent circuit, K table value coefficient, K > 1, and the value that K is in span are the bigger the better.
In one embodiment of the invention, the capacitance of the predetermined capacitance electric capacity of predetermined quantity is set as, according to sweeping
Retouching the line driving order to colleague's pixel, the capacitance of predetermined capacitance electric capacity is set to start successively near source driving signal one end
Successively decrease.Concrete, as shown in Figure 6, front k the pixel in every one-row pixels all increases electric capacity, and capacitance size is depended on by order of successively decreasing
Secondary be set to kC, (k-1) C, (k-2) C, 2C, C.
According to another aspect of the present invention, a kind of LCD using drive circuit illustrated above is additionally provided
Plate.This display panels can effectively reduce the pixel electrode caused because of signal delay and keep the difference of voltage.
While it is disclosed that embodiment as above, but described content is only to facilitate understand the present invention and adopt
Embodiment, be not limited to the present invention.Technical staff in any the technical field of the invention, without departing from this
On the premise of spirit and scope disclosed in invention, in form and any amendment and change can be made in details implement,
But the scope of patent protection of the present invention, still must be defined in the range of standard with appending claims.
Claims (10)
1. a liquid crystal display panel drive circuit, including:
Scan line,
Wherein, every scan line is provided with predetermined capacitance electric capacity, in order to reduce because signal prolongs near source driving signal one end
The pixel electrode caused late keeps voltage differences.
Circuit the most according to claim 1, it is characterised in that be provided with described in predetermined quantity predetermined in every scan line
Capacitance electric capacity, wherein, described predetermined quantity is less than the pixel quantity of every scanning line driving.
Circuit the most according to claim 2, it is characterised in that be provided with a described predetermined capacitance in every scan line
Electric capacity.
Circuit the most according to claim 3, it is characterised in that set in the front end of the first order pixel of every scanning line driving
It is equipped with described predetermined capacitance electric capacity.
5. according to the circuit described in claim 3 or 4, it is characterised in that the capacitance of described predetermined capacitance electric capacity is set to make a reservation for
The capacitance of the pixel correspondence equivalent circuit of multiple.
Circuit the most according to claim 2, it is characterised in that be provided with multiple described predetermined capacitance in every scan line
Electric capacity.
Circuit the most according to claim 6, it is characterised in that every scan line according to driving order drive near driving
In the predetermined number of pixels of dynamic signal source one end, it is each provided with described in one predetermined in close source driving signal one end of every grade of pixel
Capacitance electric capacity.
Circuit the most according to claim 7, it is characterised in that the capacitance of the described predetermined capacitance electric capacity of predetermined quantity sets
For equal.
Circuit the most according to claim 7, it is characterised in that the capacitance of the described predetermined capacitance electric capacity of predetermined quantity sets
For, according to the scan line driving order to colleague's pixel, the capacitance of described predetermined capacitance electric capacity is set near driving
Signal source one end starts to successively decrease successively.
10. one kind uses the display panels of circuit according to any one of above claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804863.3A CN106297707A (en) | 2016-09-06 | 2016-09-06 | A kind of display panels and drive circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610804863.3A CN106297707A (en) | 2016-09-06 | 2016-09-06 | A kind of display panels and drive circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106297707A true CN106297707A (en) | 2017-01-04 |
Family
ID=57710759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610804863.3A Pending CN106297707A (en) | 2016-09-06 | 2016-09-06 | A kind of display panels and drive circuit thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN106297707A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018152890A1 (en) * | 2017-02-27 | 2018-08-30 | 武汉华星光电技术有限公司 | Goa drive panel |
| CN110109307A (en) * | 2019-04-28 | 2019-08-09 | 深圳市华星光电半导体显示技术有限公司 | Array substrate and display panel |
| WO2022222151A1 (en) * | 2021-04-23 | 2022-10-27 | 京东方科技集团股份有限公司 | Display substrate, display panel, and display device |
| CN117542317A (en) * | 2023-12-19 | 2024-02-09 | 惠科股份有限公司 | Light-emitting driving circuit and display panel |
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| CN105825803A (en) * | 2016-05-06 | 2016-08-03 | 深圳市华星光电技术有限公司 | Display apparatus |
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| CN1971910A (en) * | 2005-11-22 | 2007-05-30 | 奇美电子股份有限公司 | LCD apparatus, pixel array base plate and method for preventing flicker of display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018152890A1 (en) * | 2017-02-27 | 2018-08-30 | 武汉华星光电技术有限公司 | Goa drive panel |
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| WO2022222151A1 (en) * | 2021-04-23 | 2022-10-27 | 京东方科技集团股份有限公司 | Display substrate, display panel, and display device |
| CN117542317A (en) * | 2023-12-19 | 2024-02-09 | 惠科股份有限公司 | Light-emitting driving circuit and display panel |
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Application publication date: 20170104 |