CN107886922A - Liquid crystal display device and the method for improving liquid crystal display device power down splashette - Google Patents
Liquid crystal display device and the method for improving liquid crystal display device power down splashette Download PDFInfo
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- CN107886922A CN107886922A CN201711295119.6A CN201711295119A CN107886922A CN 107886922 A CN107886922 A CN 107886922A CN 201711295119 A CN201711295119 A CN 201711295119A CN 107886922 A CN107886922 A CN 107886922A
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- display device
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Classifications
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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
Abstract
The invention discloses a kind of liquid crystal display device, including：Connect common voltage terminal cabling, outer ring electric wire earth terminal cabling and the time schedule controller of common electrode layer；At least one metal-oxide-semiconductor is additionally provided between the common voltage terminal cabling and the outer ring electric wire earth terminal cabling；The time schedule controller outputs control signals to metal-oxide-semiconductor when monitoring abnormity of power supply power down, and the control signal is used to open the metal-oxide-semiconductor, so that the common voltage terminal cabling connects with the outer ring electric wire earth terminal cabling, bleeds off the electric charge of common electrode layer.When abnormity of power supply power down occurs in liquid crystal display device, the power down speed of common electric voltage can be greatly speeded up, reduce the pressure difference between data wire and common electric voltage, avoid liquid crystal polarization, the defects of greatly improving liquid crystal display device splashette.
Description
Technical field
The present invention relates to LCD Technology field, more particularly to a kind of liquid crystal driving technology, specifically
A kind of liquid crystal display device and the method for improving liquid crystal display device power down splashette.
Background technology
Thin Film Transistor-LCD (TFT-LCD) compares relatively low and radiationless by its low in energy consumption, manufacturing cost
The features such as, have become the mainstream technology of display field.Fig. 1 is the structural representation of current liquid crystal panel, and common electrode layer is
One whole face, circle electric wire earth terminal (GND) cabling is with outside viewing area, pixel electrode (PIXEL) is connected to data by TFT
Line (S1).At present in lcd applications, when liquid crystal mesogenses display device powered-off fault, because liquid crystal display device inputs
Power supply power-fail speed, it is therefore desirable to close terminal voltage (VGL) common electric voltage (VCOM) and complete the dynamic of powered-off fault faster
Make, as shown in Figure 2.
But in actual applications, because common electrode layer is a whole face, electric charge is slowly put into bottom from top, so can go out
The problem of existing VCOM power down is slower, as shown in figure 3, or drive integrated circult common electric voltage is forced after moving GND to because public
Electric charge at the top of common electrode layer is not bled off, and the electric charge at top can slowly flow to bottom, and VCOM can rebound, as shown in Figure 4.Due to
Common electric voltage power down is slow, it is impossible to rapidly drops to GND, then causes to leave pressure difference on liquid crystal, charge residue, stands for a long time
Afterwards, liquid crystal polarization, screen flicker are caused.
The content of the invention
The purpose of the present invention is that the problem of splashette occur in powered-off fault for existing liquid crystal mesogenses display device, is carried
For a kind of power down speed for the electric charge that can accelerate in powered-off fault on common voltage terminal cabling, and do not influence liquid crystal display device
The method of normal use.
The present invention realizes above-mentioned purpose by following technological means.
The invention discloses a kind of liquid crystal display device, including：Connect common voltage terminal cabling, the outer ring of common electrode layer
Electric wire earth terminal cabling and time schedule controller；Also set between the common voltage terminal cabling and the outer ring electric wire earth terminal cabling
There is at least one metal-oxide-semiconductor；The time schedule controller output control signal, control signal when monitoring abnormity of power supply power down
For opening the metal-oxide-semiconductor, so that the common voltage terminal cabling connects with the outer ring electric wire earth terminal cabling, bleed off public
The electric charge of electrode layer.
Further, the output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the source electrode connection common electrical of metal-oxide-semiconductor
Pressure side cabling, the drain electrode connection outer ring electric wire earth terminal cabling of metal-oxide-semiconductor；Or；The grid connection time schedule controller of the MOS pipes
Output end, metal-oxide-semiconductor drain electrode connection common voltage terminal cabling, MOS pipes source electrode connection outer ring electric wire earth terminal cabling.
The invention also discloses a kind of method for improving liquid crystal mesogenses display device power down splashette, suitable for above-mentioned liquid crystal
Showing device, including step：Monitor whether liquid crystal display device is normal display state；When abnormity of power supply occurs in liquid crystal display device
During power down, time schedule controller output control signal, the control signal drive integrated circult exports a high level level signal extremely
Metal-oxide-semiconductor, metal-oxide-semiconductor are opened, and common voltage terminal cabling connects with outer ring electric wire earth terminal cabling, and the electric charge of common electrode layer passes through outer
Circle electric wire earth terminal cabling is bled off.
Further, methods described also includes step：When liquid crystal display device is normally shown, time schedule controller output prison
Signal is surveyed, the monitoring signals drive integrated circult exports a low level level signal and managed to MOS, and metal-oxide-semiconductor ends.
The invention also discloses a kind of liquid crystal display device, includes connecting common voltage terminal cabling, the N bars of common electrode layer
Data wire and time schedule controller：Between at least one data wire in data wire described in the common voltage terminal cabling and N bars also
Provided with metal-oxide-semiconductor；The time schedule controller outputs control signals to metal-oxide-semiconductor, the control letter when monitoring abnormity of power supply power down
Number be used for open the metal-oxide-semiconductor so that the common voltage terminal cabling connects with the data wire, bleed off the electricity of common electrode layer
Lotus.
Further, the output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the source electrode connection common electrical of metal-oxide-semiconductor
Pressure side cabling, the source electrode connection data wire of metal-oxide-semiconductor；Or；The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, metal-oxide-semiconductor
Drain electrode connection common voltage terminal cabling, metal-oxide-semiconductor source electrode connection data wire.
Further, N data lines are connected with the common voltage terminal cabling respectively.
The invention also discloses a kind of method for improving liquid crystal mesogenses display device power down splashette, suitable for above-mentioned liquid crystal
Showing device, including step：Monitor whether liquid crystal display device is normal display state；When abnormity of power supply occurs in liquid crystal display device
During power down, time schedule controller output control signal, the control signal drive integrated circult exports a high level level signal extremely
Metal-oxide-semiconductor, metal-oxide-semiconductor are opened, and common voltage terminal cabling is connected with data wire, and the electric charge of common electrode layer is bled off by data wire.
Further, methods described also includes step：When liquid crystal display device is normally shown, time schedule controller output prison
Signal is surveyed, the monitoring signals drive integrated circult exports a low level level signal and managed to MOS, and metal-oxide-semiconductor ends.
Compared with prior art, the present invention by metal-oxide-semiconductor by common voltage terminal cabling and outer ring electric wire earth terminal cabling phase
Connection, or the selected section TFT zone in viewing area, are connected common voltage terminal cabling with data wire by metal-oxide-semiconductor, when
When abnormity of power supply power down occurs in liquid crystal display device, the power down speed of the electric charge of common electrode layer can be greatly speeded up, reduces data
Pressure difference between line and public electrode, the defects of greatly improving liquid crystal display device splashette.
Brief description of the drawings
Fig. 1 is structure of liquid crystal display panel schematic diagram in the prior art；
Fig. 2 required abnormity of power supply timing diagrams reached when being abnormity of power supply power down；
Actual abnormity of power supply timing diagram when Fig. 3 is abnormity of power supply power down；
The abnormity of power supply timing diagram that common electric voltage has a rebound when Fig. 4 is abnormity of power supply power down；
Fig. 5 is the equivalent circuit structure schematic diagram of liquid crystal display panel in the embodiment of the present invention one；
Fig. 6 is the equivalent circuit structure schematic diagram of liquid crystal display panel in the embodiment of the present invention two.
Embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
The embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically show in each figure, they are not represented
Its practical structures as product.In addition, so that simplified form readily appreciates, there is identical structure or function in some figures
Part, one of those is only symbolically depicted, or only marked one of those.
Embodiment one：
A kind of liquid crystal display device, including：Crisscross grid line and data wire, by grid line and data wire intersect what is limited
Pixel region, pixel electrode and pixel electrode positioned at the TFT switch of grid line and data wire infall, in pixel region
Between across insulating barrier common electrode layer, connect common electrode layer common voltage terminal cabling, outer ring electric wire earth terminal cabling
At least one MOS is additionally provided between time schedule controller, the common voltage terminal cabling and the outer ring electric wire earth terminal cabling
Pipe.Wherein, common electrode layer is the laying of whole face, and the voltage of driving liquid crystal is produced between common electrode layer and pixel electrode；It is public
Common-battery pressure side cabling provides public voltage signal for common electrode layer.
When the time schedule controller monitors abnormity of power supply power down, the time schedule controller outputs control signals to MOS
Pipe, the control signal is used to open the metal-oxide-semiconductor, so that the common voltage terminal cabling is walked with the outer ring electric wire earth terminal
Line connects, and bleeds off the electric charge of common electrode layer.
By setting MOS to manage between common voltage terminal cabling and outer ring electric wire earth terminal cabling in the present embodiment, different
Metal-oxide-semiconductor is turned on during normal power down, is connected by common voltage terminal cabling with outer ring electric wire earth terminal cabling and accelerates common electrode layer
The power down speed of electric charge, and liquid crystal display device normal use is not influenceed.
Specifically, the output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the source electrode connection common electric voltage of metal-oxide-semiconductor
Hold cabling, the drain electrode connection outer ring electric wire earth terminal cabling of metal-oxide-semiconductor；Or；The grid connection time schedule controller of the MOS pipes
Output end, the drain electrode connection common voltage terminal cabling of metal-oxide-semiconductor, the source electrode connection outer ring electric wire earth terminal cabling of MOS pipes.
Metal-oxide-semiconductor described in the present embodiment can be one or more, and particular number can be selected according to actual conditions, when
When metal-oxide-semiconductor is multiple, metal-oxide-semiconductor can be with evenly distributed in common electrode layer surrounding.
Fig. 5 is the equivalent circuit structure schematic diagram of liquid crystal mesogenses display device in the embodiment of the present invention one, as shown in figure 5,
The present invention is connected common voltage terminal cabling with outer ring electric wire earth terminal cabling by metal-oxide-semiconductor, and time schedule controller monitors liquid crystal
There is output control signal during abnormity of power supply power down in display device, and drive integrated circult carries out low level according to the control signal
Level VSS is exported.The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the source electrode connection common voltage terminal of metal-oxide-semiconductor are walked
Line, the drain electrode connection outer ring electric wire earth terminal cabling of metal-oxide-semiconductor；Or；The output of the grid connection time schedule controller of the metal-oxide-semiconductor
End, the drain electrode connection common voltage terminal cabling of MOS pipes, the source electrode connection outer ring earth terminal cabling of metal-oxide-semiconductor；The MOS pipes are equal
Even arrangement, particular number and particular location can be selected according to actual conditions.
When liquid crystal display device is normally shown, time schedule controller output monitoring signals, it is low that drive integrated circult exports one
Level level VSS, metal-oxide-semiconductor cut-off；When there is abnormity of power supply power down in liquid crystal display device, time schedule controller output control letter
Number, drive integrated circult exports a high level level VSS, and metal-oxide-semiconductor is opened, common voltage terminal cabling and outer ring electric wire ground connection
Cabling is held to connect, the electric charge of common electrode layer is discharged rapidly by metal-oxide-semiconductor.
A kind of method for improving liquid crystal mesogenses display device power down splashette, suitable for above-mentioned liquid crystal display device, including step
Suddenly：Monitor whether liquid crystal display is normal display state；When abnormity of power supply power down occurs in liquid crystal display device, time schedule controller is defeated
Go out control signal, the control signal drive integrated circult exports a high level level signal to metal-oxide-semiconductor, and metal-oxide-semiconductor is opened, public
Voltage end cabling is connected with outer ring electric wire earth terminal cabling, and the electric charge of common electrode layer is put by outer ring electric wire earth terminal cabling
Fall.
Preferably, methods described also includes step：When liquid crystal display device is normally shown, time schedule controller output monitoring
Signal, the monitoring signals drive integrated circult export a low level level signal to metal-oxide-semiconductor, metal-oxide-semiconductor cut-off.
The contents such as information exchange, implementation procedure in this method embodiment and said apparatus between each module are based on same structure
Think, particular content can be found in the narration in apparatus of the present invention embodiment, and here is omitted.
Embodiment two：
A kind of liquid crystal display device, include common voltage terminal cabling, N data lines and the sequential control of connection common electrode layer
Device processed：Metal-oxide-semiconductor is additionally provided between at least one data wire in data wire described in the common voltage terminal cabling and N bars；It is described
Time schedule controller outputs control signals to metal-oxide-semiconductor when monitoring abnormity of power supply power down, and the control signal is described for opening
Metal-oxide-semiconductor, so that the common voltage terminal cabling connects with the data wire, bleed off the electric charge of common electrode layer.
Metal-oxide-semiconductor can be set between common voltage terminal cabling and at least one data wire in the present embodiment, pass through metal-oxide-semiconductor
On or off controls whether connecting for common voltage terminal cabling and at least one data wire, by common voltage terminal cabling and
Data wire connection accelerates the power down speed of the electric charge in common electrode layer, and does not influence liquid crystal display device normal use.
Specifically, the output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the source electrode connection common electric voltage of metal-oxide-semiconductor
Hold cabling, the source electrode connection data wire of metal-oxide-semiconductor；Or；The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, metal-oxide-semiconductor
Drain electrode connection common voltage terminal cabling, the source electrode connection data wire of metal-oxide-semiconductor.
Metal-oxide-semiconductor described in the present embodiment can be one or more, and particular number can be selected according to actual conditions.
Fig. 6 is the equivalent circuit structure schematic diagram of liquid crystal mesogenses display device in the embodiment of the present invention two, as shown in fig. 6,
Common voltage terminal cabling connects data wire by metal-oxide-semiconductor, and time schedule controller monitors that liquid crystal display device abnormity of power supply occurs and fallen
Output control signal when electric, drive integrated circult carry out VSS low levels level according to the control signal and exported.In viewing area
Selected section TFT zone in domain, its corresponding data wire is set to be connected to common voltage terminal cabling by metal-oxide-semiconductor；Described TFT areas
The size and location in domain is not fixed, and can be selected according to actual conditions, and corresponding number is selected according to the size and location of TFT zone
The metal-oxide-semiconductor of amount.The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the source electrode connection common voltage terminal of metal-oxide-semiconductor are walked
Line, the source electrode connection data wire of metal-oxide-semiconductor；Or；The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the drain electrode of metal-oxide-semiconductor
Connect common voltage terminal cabling, the source electrode connection data wire of metal-oxide-semiconductor.
When liquid crystal display device is normally shown, time schedule controller output monitoring signals, it is low that drive integrated circult exports one
Level level VSS, metal-oxide-semiconductor are not opened；When there is abnormity of power supply power down in liquid crystal display device, time schedule controller output control letter
Number, drive integrated circult exports a high level level VSS, and metal-oxide-semiconductor is opened, and common voltage terminal cabling is connected with data wire, public
The electric charge of electrode layer is bled off rapidly by data wire.
Preferably, the common voltage terminal cabling is connected with N data lines respectively.Specifically, common voltage terminal cabling exists
The top of panel is connected with per data line.
A kind of method for improving liquid crystal mesogenses display device power down splashette, suitable for above-mentioned liquid crystal display device, including step
Suddenly：Monitor whether liquid crystal display is normal display state；When abnormity of power supply power down occurs in liquid crystal display device, time schedule controller is defeated
Go out control signal, the control signal drive integrated circult exports a high level level signal to metal-oxide-semiconductor, and metal-oxide-semiconductor is opened, public
Voltage end cabling is connected with data wire, and the electric charge of common electrode layer is bled off by data wire.
Preferably, methods described also includes step：When liquid crystal display device is normally shown, time schedule controller output monitoring
Signal, the monitoring signals drive integrated circult export a low level level signal to metal-oxide-semiconductor, metal-oxide-semiconductor cut-off.
The contents such as information exchange, implementation procedure in this method embodiment and said apparatus between each module are based on same structure
Think, particular content can be found in the narration in apparatus of the present invention embodiment, and here is omitted.
By the method for improvement liquid crystal mesogenses display device power down splashette provided by the invention, when liquid crystal display device occurs
During abnormal power supply power-fail, common voltage terminal cabling can be dragged down rapidly, significantly improve splashette defect.
It should be noted that above-described embodiment can independent assortment as needed.Described above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, do not departing from the premise of the principle of the invention
Under, some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
- A kind of 1. liquid crystal display device, it is characterised in that including：Connect common voltage terminal cabling, the outer ring electricity of common electrode layer Line earth terminal cabling and time schedule controller；It is additionally provided between the common voltage terminal cabling and the outer ring electric wire earth terminal cabling At least one metal-oxide-semiconductor；When the time schedule controller monitors abnormity of power supply power down, the time schedule controller output control signal To metal-oxide-semiconductor, the control signal is used to open the metal-oxide-semiconductor, so that the common voltage terminal cabling connects with the outer ring electric wire Ground terminal cabling connects, and bleeds off the electric charge of common electrode layer.
- 2. liquid crystal display device according to claim 1, it is characterised in that the grid connection SECO of the metal-oxide-semiconductor The output end of device, the source electrode connection common voltage terminal cabling of metal-oxide-semiconductor, the drain electrode connection outer ring electric wire earth terminal cabling of metal-oxide-semiconductor；Or；The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the drain electrode connection common voltage terminal cabling of metal-oxide-semiconductor, metal-oxide-semiconductor Source electrode connection outer ring earth terminal cabling.
- A kind of 3. method for improving liquid crystal display device power down splashette, suitable for described in the claims 1-2 any one Liquid crystal display device, it is characterised in that including step：Monitor whether liquid crystal display device is normal display state；When there is abnormity of power supply power down in liquid crystal display device, time schedule controller output control signal, the control signal driving Integrated circuit exports a high level level signal to metal-oxide-semiconductor, metal-oxide-semiconductor and opened, common voltage terminal cabling and outer ring electric wire earth terminal Cabling is connected, and the electric charge of common electrode layer is bled off by outer ring electric wire earth terminal cabling.
- 4. the method for the improvement liquid crystal display device power down splashette according to claim, it is characterised in that methods described is also Including step：When liquid crystal display device is normally shown, time schedule controller output monitoring signals, the monitoring signals drive integrated circult A low level level signal is exported to metal-oxide-semiconductor, metal-oxide-semiconductor cut-off.
- 5. a kind of liquid crystal display device, it is characterised in that common voltage terminal cabling, N datas including connecting common electrode layer Line and time schedule controller：It is additionally provided between at least one data wire in data wire described in the common voltage terminal cabling and N bars Metal-oxide-semiconductor；Time schedule controller output control signal when monitoring liquid crystal display device abnormity of power supply power down, the control letter Number be used for open the metal-oxide-semiconductor so that the common voltage terminal cabling connects with the data wire, bleed off the electricity of common electrode layer Lotus.
- 6. liquid crystal display device according to claim 5, it is characterised in that：The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the source electrode connection common voltage terminal cabling of metal-oxide-semiconductor, metal-oxide-semiconductor Source electrode connection data wire；Or；The output end of the grid connection time schedule controller of the metal-oxide-semiconductor, the drain electrode connection common voltage terminal cabling of metal-oxide-semiconductor, metal-oxide-semiconductor Source electrode connection data wire.
- 7. liquid crystal display device according to claim 6, it is characterised in that data wire described in N bars respectively with it is described public Voltage end cabling is connected.
- A kind of 8. method for improving liquid crystal display device power down splashette, suitable for described in the claims 5-7 any one Liquid crystal display device, it is characterised in that including step：Monitor whether liquid crystal display device is normal display state；When there is abnormity of power supply power down in liquid crystal display device, time schedule controller output control signal, the control signal driving Integrated circuit exports a high level level signal to metal-oxide-semiconductor, metal-oxide-semiconductor and opened, and common voltage terminal cabling is connected with data wire, public The electric charge of electrode layer is bled off by data wire.
- 9. the method according to claim 8 for improving liquid crystal display device power down splashette, it is characterised in that methods described is also Including step：When liquid crystal display device is normally shown, time schedule controller output monitoring signals, the monitoring signals drive integrated circult A low level level signal is exported to metal-oxide-semiconductor, metal-oxide-semiconductor cut-off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711295119.6A CN107886922A (en) | 2017-12-08 | 2017-12-08 | Liquid crystal display device and the method for improving liquid crystal display device power down splashette |
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| CN201711295119.6A CN107886922A (en) | 2017-12-08 | 2017-12-08 | Liquid crystal display device and the method for improving liquid crystal display device power down splashette |
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