CN108682404A - Display panel and pre-charging method - Google Patents
Display panel and pre-charging method Download PDFInfo
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- CN108682404A CN108682404A CN201810413152.2A CN201810413152A CN108682404A CN 108682404 A CN108682404 A CN 108682404A CN 201810413152 A CN201810413152 A CN 201810413152A CN 108682404 A CN108682404 A CN 108682404A
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- 238000000034 method Methods 0.000 title claims description 41
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000010586 diagram Methods 0.000 description 20
- 230000005611 electricity Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- G09G3/3685—Details of drivers for data electrodes
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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
-
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3275—Details of drivers for data electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal (AREA)
- Control Of El Displays (AREA)
Abstract
The display panel includes a plurality of data lines, a data driving circuit, and a precharge circuit. The plurality of data lines include a first data line and a second data line. The data driving circuit is coupled to the plurality of data lines. The pre-charge circuit is coupled with a plurality of data lines. When the data driving circuit provides the first pixel voltage to the first data line, the pre-charging circuit pre-charges the second data line with the first pixel voltage.
Description
Technical field
The invention relates to a kind of display technologies, and in particular to a kind of display panel and applied to its preliminary filling
Method for electrically.
Background technology
Display panel is widely used in a variety of consumer electrical products, such as computer screen, mobile phone, TV etc..It is aobvious
Show that panel has multiple pixels, when driving each pixel display image data, each pixel needs enough charging time to reach
Correct pixel voltage.And in embedded touch control panel, display panel and touch function are integrated, drive display image data and
Touch-control sensing is that timesharing is done, reduces the charging time workable for dot structure.In addition, for display panel image resolution ratio
Demand increasingly promoted, be also equivalent to the charging time for reducing each pixel.Therefore, design is a kind of having appropriate precharge
(precharge) display panel of function is one of endeavoured project of current industry.
Invention content
The present invention can effectively carry out pixel pre- about a kind of display panel and applied to its pre-charge method
Charging, to ensure that pixel reaches correct voltage.
According to an aspect of the invention, it is proposed that a kind of display panel, including multiple data lines, data drive circuit and
Pre-charge circuit.Multiple data lines include the first data line and the second data line.Data drive circuit couples multiple data lines.
Pre-charge circuit couples multiple data lines.When data drive circuit provides the first pixel voltage to the first data line, precharge
Circuit is with first the second data line of pixel voltage pair into line precharge.
According to another aspect of the invention, it is proposed that a kind of pre-charge method, includes the following steps.Display panel is provided, is shown
Show that panel includes multiple data lines, data drive circuit and pre-charge circuit, multiple data lines include the first data line and
Second data line.Data drive circuit provides the first pixel voltage to the first data line.When data drive circuit provides the first picture
When plain voltage to the first data line, pre-charge circuit is with first the second data line of pixel voltage pair into line precharge.
Description of the drawings
More preferably understand in order to which the above-mentioned and other aspect to the present invention has, special embodiment below, and coordinates attached drawing detailed
Carefully it is described as follows：
Fig. 1 is painted the display panel schematic diagram according to first embodiment of the invention.
Fig. 2 be painted according to one embodiment of the invention include multiplexing circuitry data drive circuit schematic diagram.
Fig. 3 is painted the multiplexing circuitry schematic diagram according to one embodiment of the invention.
Fig. 4 is painted the display panel circuit diagram according to second embodiment of the invention.
Fig. 5 is painted the display panel circuit diagram according to third embodiment of the invention.
Fig. 6 is painted the display panel circuit diagram according to fourth embodiment of the invention.
Fig. 7 is painted the display panel circuit diagram according to fifth embodiment of the invention.
Fig. 8 A~Fig. 8 D are painted one schematic diagram of pre-charge method according to one embodiment of the invention.
Fig. 9 A~Fig. 9 D are painted two schematic diagram of pre-charge method according to one embodiment of the invention.
Figure 10 is painted the display panel circuit diagram according to sixth embodiment of the invention.
Specific implementation mode
It will clearly illustrate the spirit of this disclosure with attached drawing and in detail narration below, have in any technical field
Usual skill is after the embodiment for understanding this disclosure, when the technology that can be taught by this disclosure, be changed and
Modification, without departing from the spirit and scope of this disclosure.
About " first " used herein, " second " ... etc., not especially censure the meaning of order or cis-position, also
It is non-to limit the present invention, only for distinguishing the component described with same technique term or operation.
About " electric property coupling " used herein, " coupling ", can refer to two or multiple components mutually directly make entity or
It is in electrical contact, or body or in electrical contact is mutually put into effect indirectly, and " electric property coupling ", " coupling " also can refer to two or multiple component phases
Interoperability or action.
It is the term of opening, i.e., about "comprising" used herein, "comprising", " having ", " containing " etc.
Mean including but not limited to.
About it is used herein " and/or ", include the things any or all combinations.
About word used herein (terms), in addition to having and especially indicating, usually have each word using herein
In field, at this disclose content in the usual meaning in special content.Certain words to describe this announcement will be under
Or discussed in the other places of this specification, to provide those skilled in the art's guiding additional in the description in relation to this announcement.
Fig. 1 is painted the display panel schematic diagram according to first embodiment of the invention.Display panel 10a includes multiple scan lines
G1~G3, multiple data line D1~D6, data drive circuit 110 and pre-charge circuit 120.Data drive circuit 110 couples
Multiple data line D1~D6, pre-charge circuit 120 couple multiple data line D1~D6.Each scan line G1~G3 and each data line D1
~D6 is transmitting a signal to each dot structure.In the embodiment shown in fig. 1, dot structure includes thin film transistor (TFT) (thin
Film transistor, TFT), liquid crystal (liquid crystal) capacitance and storage capacitors.Dot structure depicted in Fig. 1 is only
It is exemplary, it is not limited to the present invention, display panel and pre-charge method mentioned by the present invention can also be applied to other
The dot structure of type, such as including Organic Light Emitting Diode (organic light emitting diode, OLED).It is multiple
Dot structure forms display area, and in one embodiment, data drive circuit 110 may be disposed at display with pre-charge circuit 120
The different both sides in region, example as shown in Figure 1, data drive circuit 110 may be disposed at the bottom side of display area, precharge electricity
Road 120 may be disposed at the top side of display area.It the installation position of data drive circuit 110 and pre-charge circuit 120 can be according to reality
It needs to be changed, the present invention does not limit.
In addition, scan line quantity shown in FIG. 1 and data line quantity are also merely illustrative, display panel 10 is worked as and be may include
More scan lines and data line.In display image data, scan line G1~scan line G3 is sequentially to open, and will be come from
Corresponding dot structure is written in the image data of data drive circuit 110.Data line D1~data line D6 is sequentially adjacent to each other, also
That is, data line D1 adjacent to data line D2, data line D2 adjacent to data line D3, and so on.
Fig. 2 be painted according to one embodiment of the invention include multiplexing circuitry data drive circuit schematic diagram.Implement herein
In example, data drive circuit 110 includes source electrode driver 114 and multiplexing circuitry 112, and multiplexing circuitry 112 has input
End coupling data drive signal line ds, multiple output ends couple data line D1~D6, and the coupling of an at least multitask control terminal
An at least multitask controls signal ms.Source electrode driver 114 is, for example, the integrated electricity for being disposed in proximity to the bottom sides display panel 10a
Road, to provide image data to display panel 10a.Pass through be arranged multiplexing circuitry 112, it is possible to reduce panel display section with
And the cabling quantity between source electrode driver 114, and achieve the purpose that narrow side frame panel.Data line D1~D6 is for example corresponded to respectively
To a sub-pixel area, multiplexing circuitry 112 be controlled by multitask control signal ms, by the voltage of data drive signal line ds according to
Sequence is sent to data line D1~D6.For example, data line D1 corresponds to the red sub-pixel area of the first pixel, D2 pairs of data line
The blue subpixels area of the first pixel should be corresponded to the green sub-pixels area of the first pixel, data line D3, data line D4 is corresponded to
To the red sub-pixel area of the second pixel, data line D5 correspond to the green sub-pixels area of the second pixel, data line D6 is corresponded to
The blue subpixels area of second pixel.
Fig. 3 is painted the multiplexing circuitry schematic diagram according to one embodiment of the invention.Multiplexing circuitry 112 includes switch module
T11~T16, respectively respective data lines D1~D6, switch module T11~T16 be controlled by multitask control signal ms1~
ms6.When driving display data, multitask controls one of signal ms1~ms6 enables (enable), remaining is forbidden energy
(disable), so that the voltage of data drive signal line ds is sent to corresponding data line.In the following description, it is clear
Chu illustrates operating principle, will use example explanations of the Fig. 3 as multiplexing circuitry 112, it should be understood that be shown in Fig. 3 only
For a kind of embodiment about multiplexing circuitry 112, the present invention is not limited thereto, other electricity also can be used in multiplexing circuitry 112
Road implementation, and the kenel of multiplexing circuitry 112 is not limited to 1 pair 6, can also use such as 1 pair 2,1 pair 3 or its alloytype
The multiplexing circuitry of state.
In the display panel for being provided with multiplexing circuitry, due to corresponding multiple data lines to the same multiplexing circuitry
Image data can sequentially be written, the charging time assigned by dot structure that each data line corresponds to thus is reduced, therefore can
By, into line precharge, first improving the voltage of dot structure before writing pixel data, to ensure when image data is written,
Dot structure can reach correct voltage.
Referring to FIG. 1, in one embodiment, when data drive circuit 110 provides the first pixel voltage V1 to data line D2
When, pre-charge circuit 120 is with the first pixel voltage V1 to data line D3 into line precharge.Can have with reference to Fig. 1 to Fig. 3
In the embodiment for having multiplexing circuitry 112, above-mentioned operation can be, when multiplexing circuitry 112 is by data drive signal line ds
Voltage (in this example be the first pixel voltage V1) when being sent to data line D2 (such as switch module T12 conductings in Fig. 3,
Rest switch component T11, T13~T16 are disconnected), pre-charge circuit 120 carries out preliminary filling with the first pixel voltage V1 to data line D3
Electricity.
In example shown in Fig. 1, in pre-charge process, only scan line G2 is to open, scan line G1 and scan line
G3 is all to close, also that is, using the pre-charge method such as the present invention, it is only necessary to a scan line (or can be described as grid line) is opened,
I.e. executable precharge.In addition, data line D2 and data line D3 are adjacent to each other, therefore for pre-charge voltage that pixel uses
It is the voltage using adjacent pixel, such pixel can reach correct voltage value.
It is only a kind of example shown in Fig. 1, the voltage using adjacent pixel may also include as the example of pre-charge voltage, when
When data drive circuit 110 provides the second pixel voltage V2 to data line D4, pre-charge circuit 120 is with V2 pairs of the second pixel voltage
Data line D5 can also refer to other similar examples into line precharge below this specification.
The voltage of adjacent pixel is used in one embodiment, to work as number as pre-charge voltage in addition, the present invention does not limit
When providing the first pixel voltage V1 to data line D2 according to driving circuit 110, pre-charge circuit 120 is with the first pixel voltage V1 logarithms
According to line D5 into line precharge, data line D2 and data line D5 are non-adjacent, other similar examples can be also referred to below this specification.
And in said embodiment, whether use the voltage of adjacent pixel as pre-charge voltage, when executing precharge, all
It only needs to open a scan line.
Fig. 4 is painted the display panel 10b circuit diagrams according to second embodiment of the invention.In this embodiment, preliminary filling
Circuit 120 includes switch module T21~T26, and each switch module has first end (lower end in Fig. 4), second end (Fig. 4
Upper end in the middle) and control terminal.Switch module T21~T26 for example can be metal oxide semiconductcor field effect transistor
(MOSFET), the control terminal of switch module T21~T26 for example corresponds to the gate terminal of MOSFET.The of switch module T21~T26
One end is respectively coupled to data line D1~D6, the control terminal of switch module T21~T26 respectively to receive control signal ps1~
ps6.Institute's demonstration example is please referred to Fig.1, when data drive circuit 110 provides the first pixel voltage V1 to data line D2, switching group
Part T22 is closed, switch module T23 conductings, therefore can (be the first pixel electricity in this example by the voltage of switch module T23 second ends
Pressure V1) data line D3 is sent to as pre-charge voltage.
There are many circuit implementations can make the pre-charge voltage and data drive circuit that pre-charge circuit 120 provides
The pixel voltage of 110 offers is identical, is exemplified below several embodiments.Fig. 5 is painted the display surface according to third embodiment of the invention
Plate 10c circuit diagrams, in this embodiment, the second end of multiple switch component T21~T26 are coupled to each other, and source drive
For the tool of device 114 there are one preliminary filling electric pin, the second end of multiple switch component T21~T26 may be coupled to this preliminary filling electric pin.Due to
Pixel voltage be provided by source electrode driver 114, therefore can make switch module T21~T26 second ends receive voltage with
Pixel voltage is identical.And since preliminary filling electric pin is and the independent signal pins of data drive signal line ds, precharge behaviour
Work will not cause to disturb for the voltage of data drive signal line ds.
Fig. 6 is painted the display panel 10d circuit diagrams according to fourth embodiment of the invention.In this embodiment, multiple
The second end of switch module T21~T26 is coupled to each other, and the second end of multiple switch component T21~T26 is coupled to data-driven
Signal wire ds can make switch module since the pixel voltage of data line D1~D6 comes from data drive signal line ds
The voltage that T21~T26 second ends receive is identical as pixel voltage.Compared to display panel 10c shown in fig. 5, display panel 10d
Source electrode driver 114 be not required to setting preliminary filling electric pin, therefore the pin number of integrated circuit can be reduced.For example, with
For the data drive circuit 110 of 1 pair of 6 multiplexing circuitry, in display panel 10c shown in Fig. 5, every 6 data
Line need to correspond to source electrode driver 114 and a preliminary filling electric pin is arranged, required when the data line quantity of display panel increases
Precharge pin number can also increase therewith.
Fig. 7 is painted the display panel 10e circuit diagrams according to fifth embodiment of the invention.In this embodiment, it switchs
The of the second end of the first end coupling switch module T22 of component T21, the first end of switch module T22 coupling switch module T23
Two ends, switch module T23 first end coupling switch module T24 second end, and so on.Therefore, when switch module T22 is led
When logical, the voltage of data line D1 can be used as the pre-charge voltage of data line D2；When switch module T23 is connected, data line D2's
Voltage can be used as the pre-charge voltage of data line D3；When switch module T24 is connected, the voltage of data line D3 can be used as data line
The pre-charge voltage of D4, and so on.Compared to display panel 10c shown in fig. 5 and display panel 10d shown in fig. 6, show
Show that panel 10e is not required to the top side coiling from display area to the bottom side of display area, can effectively save hardware cabling space, with
And avoid the non-ideal effects generated therewith by long range coiling.
As described above, Fig. 4~Fig. 7 discloses the circuit structure of multiple embodiment display panels, and about the sequential of precharge
Control and the control of corresponding contactor, two kinds of sequential control methods disclosed below：" pre-charge method one " and " precharge side
Method two ".Collocation Fig. 8 A~Fig. 8 D are illustrated that pre-charge method one, collocation Fig. 9 A~Fig. 9 D illustrate pre-charge method two below.
The following drawings, in Fig. 8 A~Fig. 8 D and Fig. 9 A~Fig. 9 D, for data drive circuit 110 be only painted switch module T11~
T16 is only painted switch module T21~T26 for pre-charge circuit 120, to be clearly illustrated in each switch module of different time points
Conducting situation, and indicate that pre-charge method one and pre-charge method two can all be applied in difference as shown in Figure 4 to 7
In circuit structure.
Fig. 8 A~Fig. 8 D are painted one schematic diagram of pre-charge method according to one embodiment of the invention.With the scanning opened at present
For line is G1, as shown in Figure 8 A, before writing pixel voltage, first to give tacit consent to pre-charge voltage V0 to data line D1 preliminary fillings
Electricity, at this time multitask control signal ms1~ms6 control switch modules T11~T16 and close, and control signal ps1 controls switch module
T21 is connected, and control signal ps2~ps6 control switch modules T21~T26 is closed.In Fig. 8 A~Fig. 8 D and Fig. 9 A~Fig. 9 D
In, it is off-state that cross symbol (' X ') representation switch component is painted on switch module, is not repeated to describe below.
Then, as shown in Figure 8 B, multitask control signal ms1 control switch modules T11 conductings so that data drive circuit
110 provide the first pixel voltage V1 to data line D1, while controlling signal ps2 control switch module T22 conductings so that precharge
Circuit 120 provides the first pixel voltage V1 to data line D2, and detailed circuit implementation can refer to Fig. 5~embodiment illustrated in fig. 7.
Due to working as the first pixel of write-in in previous time point (Fig. 8 A), data line D1 to give tacit consent to pre-charge voltage V0 precharge
When voltage V1 to data line D1, it can faster reach correct voltage value.
Then, as shown in Figure 8 C, multitask control signal ms2 control switch modules T12 conductings so that data drive circuit
110 provide the second pixel voltage V2 to data line D2, while controlling signal ps3 control switch module T23 conductings so that precharge
Circuit 120 provides the second pixel voltage V2 to data line D3.Since at previous time point (Fig. 8 B), data line D2 is with consecutive number
It, can be faster according to the first pixel voltage V1 precharge of line D1, therefore when the second pixel voltage V2 to data line D2 is written
Reach correct voltage value.
Similarly, as in fig. 8d, multitask control signal ms3 control switch modules T13 conductings so that data-driven electricity
Road 110 provides third pixel voltage V3 to data line D3, while controlling signal ps4 control switch module T24 conductings so that preliminary filling
Circuit 120 provides third pixel voltage V3 to data line D4.Since at previous time point (Fig. 8 C), data line D3 is with adjacent
The second pixel voltage V2 precharge of data line D2, therefore when third pixel voltage V3 to data line D3 is written, it can be very fast
Speed reaches correct voltage value.
The flow as shown in Fig. 8 A~Fig. 8 D, and so on, Fig. 8 D the step of after, next can be pre- to data line D5
Charging (pixel voltage for using data line D4), and (pixel voltage for using data line D5) is pre-charged to data line D6, by
In being all to use the voltage of adjacent pixel as pre-charge voltage, and correct voltage value can be rapidly achieved.And in writing pixel
After voltage to data line D6, can then open next scan line G2, return it is as shown in Figure 8 A, with acquiescence precharge electricity
Pressure V0 executes precharge to data line D1, executes repeatedly.In precharge operation flow as described above, all maintain only to open
A scan line is opened, remaining scan line is the state closed.
Fig. 9 A~Fig. 9 D are painted two schematic diagram of pre-charge method according to one embodiment of the invention.With the scanning opened at present
For line is G1, as shown in Figure 9 A, before writing pixel voltage, first to give tacit consent to pre-charge voltage V0 to data line D1~data
Line D6 precharge, at this time multitask control signal ms1~ms6 control switch modules T11~T16 and close, and control signal ps1~
Ps6 controls switch module T21~T26 conductings.
Then, as shown in Figure 9 B, multitask control signal ms1 control switch modules T11 conductings so that data drive circuit
110 provide the first pixel voltage V1 to data line D1, while controlling signal ps2~ps6 control switch module T22~T26 conductings,
So that pre-charge circuit 120 provide the first pixel voltage V1 to data line D2~D6, detailed circuit implementation can refer to Fig. 5~
Embodiment illustrated in fig. 7.Since at previous time point (Fig. 8 A), data line D1 is to give tacit consent to pre-charge voltage V0 precharge, therefore
When the first pixel voltage V1 to data line D1 is written, it can faster reach correct voltage value.
Then, as shown in Figure 9 C, multitask control signal ms2 control switch modules T12 conductings so that data drive circuit
110 provide the second pixel voltage V2 to data line D2, while controlling signal ps3~ps6 control switch module T23~T26 conductings,
So that pre-charge circuit 120 provides the second pixel voltage V2 to data line D3~D6.Due in previous time point (Fig. 9 B), number
According to line D2 with the first pixel voltage V1 precharge of adjacent data line D1, and in time point Fig. 9 A earlier), data line D2 is first
To give tacit consent to pre-charge voltage V0 precharge, therefore when the second pixel voltage V2 to data line D2 is written, can faster reach
Correct voltage value.
Similarly, as shown in fig. 9d, multitask control signal ms3 control switch modules T13 conductings so that data-driven electricity
Road 110 provides third pixel voltage V3 to data line D3, while controlling signal ps4~ps6 controls switch module T24~T26 and leading
It is logical so that pre-charge circuit 120 provides third pixel voltage V3 to data line D4~D6.Due in (figure of previous time point
9C), data line D3 is with the second pixel voltage V2 precharge of adjacent data line D2, and at time point (Fig. 9 B) earlier, counts
According to line D3 also with the first pixel voltage V1 precharge of data line D1, and in time point (Fig. 9 A) again earlier, data line D3
First to give tacit consent to pre-charge voltage V0 precharge, therefore when third pixel voltage V3 to data line D3 is written, can faster reach
To correct voltage value.
The flow as shown in Fig. 9 A~Fig. 9 D, and so on, next it can be held when the pixel voltage of data line D4 is written
It is continuous that (pixel voltage for using data line D4) is pre-charged to data line D5 and data line D6, and in the pixel of write-in data line D5
When voltage, persistently to data line D6 precharge (pixel voltage for using data line D5).And in writing pixel voltage to data line
After D6, can then open next scan line G2, return it is as shown in Figure 9 A, to give tacit consent to pre-charge voltage V0 to data line
D1~D6 executes precharge, executes repeatedly.In precharge operation flow as described above, maintain only to open a scanning
Line, remaining scan line are the state closed.
As previously discussed, the pre-charge method two shown in Fig. 9 A~Fig. 9 D, compared to preliminary filling shown in Fig. 8 A~Fig. 8 D
Method for electrically one, data line has longer precharge time, therefore can more be rapidly achieved correct pixel voltage value.With data
For line D3, if using pre-charge method one, only the time point data line D3 shown in Fig. 8 C executes precharge；And if making
With pre-charge method two, then at the time point shown in Fig. 9 A~Fig. 9 D, data line D3 all continuously carries out precharge, therefore has longer
Precharge time.
And there is longer precharge time, in one embodiment, used preliminary filling due to the use of pre-charge method two
Piezoelectric voltage can adjust with the opening time of switch module in pre-charge circuit 120, for the switch with the longer opening time
Component can give smaller pre-charge voltage, to reach power saving effect due to precharge time abundance.For example, from figure
9A~Fig. 9 D can be seen that the opening time of switch module T26 is longer, and the opening time of switch module T22 is shorter, therefore be pre-charged
Circuit 120 can give the smaller pre-charge voltages of data line D6, give the larger pre-charge voltages of data line D2.
On the other hand, in one embodiment, opening for switch module can be determined according to pixel voltage and pre-charge voltage
Open time span.For example, the first pixel voltage V1, the second pixel voltage V2, third picture of data line D1~D3 are provided to
Grayscale value corresponding to plain voltage V3 is for example respectively 128,128,64, and (pixel gray level value is all for data drive circuit 120
Given information), according to these pixel voltage values, it can learn that the precharge time of data line D3 can shorten, can also complete pre-
Charging effect.Therefore, as shown in Figure 9 B, data line D3 has used the first pixel voltage V1 to execute precharge, then shown in Fig. 9 C
The step of in, control signal ps3 can control switch module T23 and close, and stopping continues to execute precharge to data line D3 because
In Fig. 9 B the step of, data line D3 has been precharged to required voltage, can so reduce the switch module quantity of conducting, and into
One step reaches power saving effect, is equivalent to the dot structure for partitioning energy into other with greater need for precharge time.
It, can be flexibly since each data line can have different precharge time in pre-charge method two
Pre-charge voltage and the precharge time of each data line are adjusted, such as precharge time longer data line is used lower
Pre-charge voltage, or or is used for the higher data line of pre-charge voltage shorter precharge time.In one embodiment,
Display panel 10b~10e as shown in Figure 4 to 7 may also include precharge sequential control circuit, precharge timing control electricity
Road controls signal ps1~ps6 to generate.By taking data line D3 as an example, precharge sequential control circuit can be according to the second pixel electricity
Press V2 (pixel voltage of respective data lines D2) and third pixel voltage V3 (pixel voltage of respective data lines D3), adjustment control
The enable time span of signal ps3 (the switch module T23 of respective data lines D3) processed.For example, lookup can be pre-set
Table be stored in precharge sequential control circuit within, when precharge sequential control circuit obtain different data line pixel voltage it
Afterwards, you can obtain corresponding control signal enable time span from look-up table.Certain circuit implementation is not limited thereto, also
It can be executed from pixel voltage using the logic circuit being pre-designed in being pre-charged in sequential control circuit and be transformed into control signal cause
The operation of energy time span.
Multiple embodiments as shown in Fig. 1~Fig. 9 D, for the embodiment corresponding to 6 data line D1~D6.And it is general
In display panel, the quantity of data line can be hundreds of or thousands of, with Figure 10 explanations when Fig. 1~Fig. 9 D illustrated embodiments are answered
With the situation to more data lines.Figure 10 is painted the display panel 10f circuit diagrams according to sixth embodiment of the invention, herein
It is to use circuit framework as shown in FIG. 6 as example in embodiment, certain display panel 10f can also be used shown in other figures
Embodiment.Display panel 10f includes data line D1~D12.Data drive circuit 110 includes that switch module T11~T16 is corresponded to
Data line D1~D6, switch module T11 '~T16 ' respective data lines D7~D12, switch module T11~T16 are controlled by more
Task control signal ms1~ms6, and switch module T11 '~T16 ' is also controlled by multitask control signal ms1~ms6,
114 output data drive signal line ds of source electrode driver corresponds to data line D1~D6, data drive signal line ds ' and corresponds to number
According to line D7~D12.Pre-charge circuit 120 include switch module T21~T26 respective data lines D1~D6, switch module T21 '~
T26 ' respective data lines D7~D12, switch module T21~T26, which is controlled by, controls signal ps1~ps6, and switch module
T21 '~T26 ' is also controlled by control signal ps1~ps6.Due to the use of control signal ps1~ps6 and multitask control
Signal ms1~ms6 is identical, therefore the pre-charge method one shown in Fig. 8 A~Fig. 8 D (or preliminary filling shown in Fig. 9 A~Fig. 9 D
Method for electrically two) when data line D1~D6 is executed, it can also be executed simultaneously in data line D7~D12.For example, when offer pixel
When voltage is to data line D2, to data line D3 into line precharge, while pixel voltage is also provided to data line D8, and to data line
D9 is into line precharge.It if the data line of display panel 10f is more, can continue to extend according to framework shown in Fig. 10, control
The quantity of signal processed remains unchanged, and will not increase as data line quantity increases.
Display panel according to above example of the present invention and pre-charge method need to only be opened in pre-charge process
A scan line is opened, and the voltage of neighborhood pixels can be used to be pre-charged pixel, therefore can effectively reach correct pixel electricity
Pressure value.In addition, several different timing control may be used in pre-charge method, the precharge electricity of each data line can be flexibly adjusted
Pressure and precharge time, and reach good precharge effect.
In conclusion although the present invention is disclosed as above with embodiment, however, it is not to limit the invention.Institute of the present invention
Belong in technical field and have usually intellectual, without departing from the spirit and scope of the present invention, when various changes and profit can be made
Decorations.Therefore, protection scope of the present invention is when subject to appended claims institute defender.
【Symbol description】
10a~10f:Display panel
110:Data drive circuit
112:Multiplexing circuitry
114:Source electrode driver
120:Pre-charge circuit
D1~D12:Data line
ds、ds′:Data drive signal line
G1~G3:Scan line
Ms, ms1~ms6:Multitask controls signal
Ps1~ps6:Control signal
T11~T16, T21~T26, T11 '~T16 ', T21 '~T26 ':Switch module
V0:Give tacit consent to pre-charge voltage
V1:First pixel voltage
V2:Second pixel voltage
V3:Third pixel voltage
Claims (20)
1. a kind of display panel, including：
Multiple data lines, including one first data line and one second data line；
One data drive circuit couples multiple data line；And
One pre-charge circuit couples multiple data line；
Wherein when the data drive circuit provides one first pixel voltage to first data line, the pre-charge circuit with this
One pixel voltage is to second data line into line precharge.
2. display panel as described in claim 1, wherein first data line is adjacent to second data line.
3. display panel as described in claim 1, the wherein data drive circuit include：
There is one multiplexing circuitry an input terminal to couple a data drive signal line, and multiple output ends couple multiple data line,
And an at least multitask control terminal coupling at least multitask controls signal.
4. display panel as claimed in claim 3, the wherein pre-charge circuit include：
One first switch component, have a first end, a second end and a control terminal, the first switch component this first
End couples first data line, and the control terminal of the first switch component is receiving a first control signal；And
One second switch component, have a first end, a second end and a control terminal, the second switch component this first
End couples second data line, and the control terminal of the second switch component is receiving a second control signal；
Wherein when the data drive circuit provides first pixel voltage to first data line, which closes
It closes, the second switch element turns.
5. the second end of display panel as claimed in claim 4, wherein the first switch component couples the second switch group
The second end of part.
6. the second end of display panel as claimed in claim 4, wherein the first switch component couples data-driven letter
Number line.
7. the second end of display panel as claimed in claim 4, wherein the second switch component couples the first switch group
The first end of part.
8. display panel as claimed in claim 4, wherein multiple data line further includes a third data line；
Wherein when the data drive circuit provides first pixel voltage to first data line, the pre-charge circuit with this
One pixel voltage is to the third data line into line precharge.
9. display panel as claimed in claim 8, wherein when the data drive circuit provide one second pixel voltage to this
When two data lines, the pre-charge circuit is with second pixel voltage to the third data line into line precharge.
10. display panel as claimed in claim 9 further includes a precharge sequential control circuit, the precharge timing control
Circuit is to according to first pixel voltage and second pixel voltage, the enable time for adjusting the second control signal is long
Degree.
11. a kind of pre-charge method, including：
One display panel is provided, which includes multiple data lines, a data drive circuit and a pre-charge circuit,
Multiple data line includes one first data line and one second data line；
The data drive circuit provides one first pixel voltage to first data line；And
When the data drive circuit provides first pixel voltage to first data line, the pre-charge circuit is with first picture
Plain voltage is to second data line into line precharge.
12. pre-charge method as claimed in claim 11, wherein first data line is adjacent to second data line.
13. pre-charge method as claimed in claim 11, the wherein data drive circuit include：
There is one multiplexing circuitry an input terminal to couple a data drive signal line, and multiple output ends couple multiple data line,
And an at least multitask control terminal coupling at least multitask controls signal.
14. pre-charge method as claimed in claim 13, the wherein pre-charge circuit include：
One first switch component, have a first end, a second end and a control terminal, the first switch component this first
End couples first data line, and the control terminal of the first switch component is receiving a first control signal；And
One second switch component, have a first end, a second end and a control terminal, the second switch component this first
End couples second data line, and the control terminal of the second switch component is receiving a second control signal；
Wherein when the data drive circuit provides first pixel voltage to first data line, which closes
It closes, the second switch element turns.
15. pre-charge method as claimed in claim 14, the second end of the wherein first switch component couples this and second opens
Close the second end of component.
16. the second end of pre-charge method as claimed in claim 14, wherein the first switch component couples data drive
Dynamic signal wire.
17. pre-charge method as claimed in claim 14, the second end of the wherein second switch component couples this and first opens
Close the first end of component.
18. as claim 14 pre-charge methods stated, wherein multiple data line further includes a third data line；
Wherein when the data drive circuit provides first pixel voltage to first data line, the pre-charge circuit with this
One pixel voltage is to the third data line into line precharge.
19. pre-charge method as claimed in claim 18, wherein when the data drive circuit provides one second pixel voltage extremely
When second data line, the pre-charge circuit is with second pixel voltage to the third data line into line precharge.
20. pre-charge method as claimed in claim 19, further includes：
There is provided one precharge sequential control circuit, the precharge sequential control circuit to according to first pixel voltage and should
Second pixel voltage adjusts an enable time span of the second control signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW107107764 | 2018-03-07 | ||
| TW107107764A TWI645396B (en) | 2018-03-07 | 2018-03-07 | Display panel and associated precharging method |
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| Publication Number | Publication Date |
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| CN108682404A true CN108682404A (en) | 2018-10-19 |
| CN108682404B CN108682404B (en) | 2021-03-23 |
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Also Published As
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| CN108682404B (en) | 2021-03-23 |
| TWI645396B (en) | 2018-12-21 |
| TW201939479A (en) | 2019-10-01 |
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