CN104252848A - Electronic paper display device, display device and driving method thereof - Google Patents
Electronic paper display device, display device and driving method thereof Download PDFInfo
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- CN104252848A CN104252848A CN201310264826.4A CN201310264826A CN104252848A CN 104252848 A CN104252848 A CN 104252848A CN 201310264826 A CN201310264826 A CN 201310264826A CN 104252848 A CN104252848 A CN 104252848A
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Abstract
本发明提供一种电子纸显示装置、显示装置及其驱动方法该驱动方法包括：获取下一帧影像数据，并与当前帧影像数据进行比较；根据比较结果提供驱动波形数据；提供与驱动波形数据相对应的驱动波形来驱动显示装置，使显示装置经由多帧过渡画面而从当前帧影像画面更新至下一帧影像画面。其中，对于显示装置显示的同一帧过渡画面，该驱动方法是分别提供持续时间相同的驱动波形至显示装置的各行显示单元，对于不同帧过渡画面，该驱动方法提供至显示装置的同一行显示单元的驱动波形的持续时间非固定相同，以藉由延长至少部分帧过渡画面的充电时间来减少显示过渡画面的帧数。采用该驱动方法驱动的显示装置较省电。
The invention provides an electronic paper display device, a display device and a driving method thereof. The driving method includes: acquiring the next frame of image data and comparing it with the current frame of image data; providing driving waveform data according to the comparison result; and providing and driving waveform data. The corresponding driving waveform drives the display device, so that the display device updates from the current frame image frame to the next frame image frame through multiple frame transition frames. Among them, for the same frame transition picture displayed by the display device, the driving method is to provide driving waveforms with the same duration to each row display unit of the display device. For different frame transition pictures, the driving method is to provide the same row display unit of the display device. The duration of the driving waveforms is not fixed and the same, so as to reduce the number of frames for displaying the transition picture by extending the charging time of at least part of the frame transition picture. The display device driven by this driving method saves power.
Description
Technical field
The present invention relates to a kind of display device and driving method thereof, particularly relate to a kind of display device of electronic paper and driving method thereof.
Background technology
Display device, as display device of electronic paper, owing to having flexible, lower power consumption and contrast comparatively advantages of higher, its mainstream electronic product that is now more and more popular and that become gradually for mass reading information.
See also Fig. 1 and Fig. 2, Fig. 1 is the structural representation of prior art display device of electronic paper.Fig. 2 is the drive waveforms figure of display device of electronic paper shown in Fig. 1.Half portion waveshape (b) is the close-up schematic view of the first half waveform (a) in figure 2 the lower.Wherein, the first half waveform (a) eliminates and drives clock signal clk (see the latter half waveform (b)), and the latter half waveform (b) eliminates frame scan start signal stv (see the first half waveform (a)).This display device of electronic paper 1 comprises electronic paper display panel 10, sequential control circuit 12, scan drive circuit 14, data drive circuit 16 and public voltage generating circuit 18.Multiple display units 105 that this electronic paper display panel 10 comprises multi-strip scanning line 102, insulate a plurality of data lines 104 crossing and rank in matrix with this multi-strip scanning line 102.Each display unit 105 is connected with this scan drive circuit 14 by scan line 102, and is connected with this data drive circuit 16 by a data line 104.This sequential control circuit 12 is connected with this scan drive circuit 14 and this data drive circuit 16 respectively.This public voltage generating circuit 18 is connected with the plurality of display unit 105.Store look-up table 122 in this sequential control circuit 12, in this look-up table 121, prestore multiple GTG transformational relation and the drive waveforms data corresponding with each GTG transformational relation.Wherein, described GTG transformational relation refers to that, from a gray scale variation to another GTG, described two GTGs both can be identical, also can be different.
The image data that the picture system 2 that this sequential control circuit 12 receives an outside exports, and compare next frame image data and present frame image data to obtain required drive waveforms data (the drive waveforms Data see in Fig. 2).This sequential control circuit 12 searches this look-up table 122, transfers required drive waveforms data and also exports the drive waveforms data transferred to this data drive circuit 16.This data drive circuit 16 receives described drive waveforms data, and provide corresponding drive waveforms extremely the plurality of display unit 105 according to described drive waveforms data, this electronic paper display panel 10 is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, described drive waveforms drives this electronic paper display panel 10 to show described multiframe transition picture and next frame image frame successively.Described content is all be described the driving process of transition picture below, and for image frame, and it is different that this display device of electronic paper 1 need watch the time length correspondence of each frame image frame according to user, repeats no more herein.For each frame transition picture, the specific works process of this display device of electronic paper 1 is as follows:
This sequential control circuit 12 is while transferring described drive waveforms data, further generation frame scan start signal stv, driving clock signal clk, row cutting start signal sth and driving beginning energy signal le, and provide this frame scan start signal stv to this scan drive circuit 14, provide this row cutting start signal sth and this driving to begin energy signal le to this data drive circuit 16.Particularly, this frame scan start signal stv is the scanning commencing signal of each frame picture of an expression.This driving is begun signal le to be that an expression starts to apply drive waveforms to the signal of each row display unit 105.This row cutting start signal sth is that an expression starts to store the corresponding signal being applied to each row display unit 105 drive waveforms data.This driving clock signal clk is used for counting.
For every frame transition picture, this frame scan start signal stv, this driving clock signal clk, this row cutting start signal sth and this driving are begun to be periodically variable square-wave pulse signal by signal le.Further, for every frame transition picture, by counting this driving clock signal clk, this sequential control circuit 12 from export that this driving begins can after the high level pulse of signal le, via the time waiting for K this driving clock signal clk, export the low level pulse of this row cutting start signal sth again, then wait for that the time of L this driving clock signal clk exports the high level pulse of this driving beginning energy signal le more again, wherein, the time of individual this driving clock signal clk of K and the time sum of L this driving clock signal clk equal the time that each bar sweep trace 102 is activated, K and L is preferably positive integer.
This scan drive circuit 14 receives this frame scan start signal stv, and corresponding generation sweep signal gclk.This scan drive circuit 14 applies this sweep signal gclk successively to each bar sweep trace 102, to activate the display unit 105 be connected with each bar sweep trace 102 successively.This sweep signal gclk duration is all identical.High level pulse in sweep signal gclk shown in Fig. 2 is just sweep signal gclk, and low level pulse between each adjacent two high level pulses is actual exports interval blink between each sweep signal gclk for this scan drive circuit 14, this, interval was not actual waveform blink.The duration that this scan drive circuit 14 is applied to the sweep signal gclk of each bar sweep trace 102 is all identical.
This data drive circuit 16 receives this driving beginning energy signal le and this row cutting start signal sth, and these drive waveforms data, for every a line display unit 105, when the beginning of the driving from this sequential control circuit 12 that this data drive circuit 16 receives, energy signal le became high level pulse from low level pulse, this data drive circuit 16 exports corresponding drive waveforms to the display unit 105 of corresponding line, to charge to display unit 105 or to keep the state before display unit 105.When after the time of K this driving clock signal clk, the row cutting start signal sth that this data drive circuit 16 receives from this sequential control circuit 12 becomes high level pulse from low level pulse, this data drive circuit 16 starts the drive waveforms data storing corresponding next line display unit 105, and comprises that to change the drive waveforms data stored be corresponding drive waveforms.When the beginning of the driving from this sequential control circuit 12 that this data drive circuit 16 receives, energy signal le became high level pulse from low level pulse again, this data drive circuit 16 exports the drive waveforms after described conversion to next line display unit 105.The drive principle of other row display unit 105 is analogized.Wherein, drive waveforms data refer to numeric type voltage, and drive waveforms refers to the waveform be made up of analog voltage.The time that this data drive circuit 16 stores the drive waveforms data of corresponding each row display unit 105 is all equal.
This public voltage generating circuit 18 is for providing common electric voltage to the plurality of display unit 105.
For every frame transition picture, the time being applied to every a line display unit 105 drive waveforms due to this data drive circuit 16 is all equal, namely the time of K this driving clock signal clk is, and the time is shorter, cause these display device of electronic paper 1 needs to show more multiple transition picture and could be updated to next frame image frame from present frame image frame, also namely need repeatedly to charge to each display unit 105, thus cause this display device of electronic paper 1 comparatively power consumption.
Summary of the invention
For solving prior art display device compared with the technical matters of power consumption, be necessary to provide a kind of display device compared with power saving.
For solving prior art display device compared with the technical matters of power consumption, be necessary the driving method that a kind of display device compared with power saving is provided.
For solving prior art display device of electronic paper compared with the technical matters of power consumption, be necessary to provide a kind of display device of electronic paper compared with power saving.
For solving prior art display device of electronic paper compared with the technical matters of power consumption, be necessary the driving method that a kind of display device of electronic paper compared with power saving is provided.
A driving method for display device of electronic paper, this driving method comprises:
Obtain next frame image data, and compare to know required drive waveforms data with present frame image data;
According to comparative result, provide required drive waveforms data; And
There is provided the drive waveforms corresponding with required drive waveforms data to drive this display device of electronic paper, this display device of electronic paper is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, and described drive waveforms drives this display device of electronic paper to show described multiframe transition picture and next frame image frame successively;
Wherein, for the same frame transition picture shown by this display device of electronic paper, this driving method is the drive waveforms that the provides the duration identical respectively each row display unit to this display device of electronic paper, for different frame transition picture, the duration on-fixed that this driving method is provided to the drive waveforms of same a line display unit of this display device of electronic paper is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
A kind of display device of electronic paper, it comprises:
Electronic paper display panel, this electronic paper display panel comprises multiple display units of the seniority among brothers and sisters in matrix;
Sequential control circuit, this sequential control circuit for obtaining next frame image data, and compares to know required drive waveforms data with present frame image data, and provides required drive waveforms data according to comparative result; And
Data drive circuit, this data drive circuit receives described drive waveforms data, and provide corresponding drive waveforms extremely the plurality of display unit according to described drive waveforms data, this electronic paper display panel is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, described drive waveforms drives this electronic paper display panel to show described multiframe transition picture and next frame image frame successively,
Wherein, for the same frame transition picture shown by this electronic paper display panel, this data drive circuit is the drive waveforms that the provides the duration identical respectively each row display unit to this electronic paper display panel, for different frame transition picture, the duration on-fixed that this data drive circuit is provided to the drive waveforms of same a line display unit of this electronic paper display panel is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
A driving method for display device, this driving method comprises:
Obtain next frame image data, and compare to know required drive waveforms data with present frame image data;
According to comparative result, provide required drive waveforms data; And
There is provided the drive waveforms corresponding with required drive waveforms data to drive this display device, this display device is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, and described drive waveforms drives this display device to show described multiframe transition picture and next frame image frame successively;
Wherein, for the same frame transition picture shown by this display device, this driving method is the drive waveforms that the provides the duration identical respectively each row display unit to this display device, for different frame transition picture, the duration on-fixed that this driving method is provided to the drive waveforms of same a line display unit of this display device is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
A kind of display device, it comprises:
Display panel, this display panel comprises multiple display units of the seniority among brothers and sisters in matrix;
Sequential control circuit, this sequential control circuit for obtaining next frame image data, and compares to know required drive waveforms data with present frame image data, and provides required drive waveforms data according to comparative result; And
Data drive circuit, this data drive circuit receives described drive waveforms data, and provide corresponding drive waveforms extremely the plurality of display unit according to described drive waveforms data, this display panel is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, described drive waveforms drives this display panel to show described multiframe transition picture and next frame image frame successively,
Wherein, for the same frame transition picture shown by this display panel, this data drive circuit is the drive waveforms that the provides the duration identical respectively each row display unit to this display panel, for different frame transition picture, the duration on-fixed that this data drive circuit is provided to the drive waveforms of same a line display unit of this display panel is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
Compared to prior art, for different frame transition picture, the time on-fixed being applied to the drive waveforms of same a line display unit due to this data drive circuit is identical, and the time is longer, make this display device of electronic paper and display device need to show less transition picture and just can be updated to next frame image frame from present frame image frame, namely the number of times that each display unit is charged is reduced, thus the start number of times of the assemblies such as data drive circuit can be reduced, and then reduce the electric energy loss of this display device of electronic paper display device.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art display device of electronic paper.
Fig. 2 is the drive waveforms figure of display device of electronic paper shown in Fig. 1.
Fig. 3 is the structural representation of display device of electronic paper one better embodiment of the present invention.
Fig. 4 is the cut-away section structural representation of display device of electronic paper shown in Fig. 3.
Fig. 5 is the drive waveforms figure of display device of electronic paper shown in Fig. 3.
Fig. 6 is the driving method process flow diagram of display device of electronic paper shown in Fig. 3.
Main element symbol description
| Display device of electronic paper | 1、3 | Picture system | 2、4 |
| Electronic paper display panel | 10、30 | Sequential control circuit | 12、32 |
| Scan drive circuit | 14、34 | Data drive circuit | 16、36 |
| Public voltage generating circuit | 18、38 | Sweep trace | 102、302 |
| Data line | 104、304 | Display unit | 105、305 |
| Switch | 306 | Pixel electrode | 308 |
| Public electrode | 310 | Display medium layer | 312 |
| Microcapsules | 312a | First electrophoresis particle | 312b |
| Second electrophoresis particle | 312c | Control end | 306a |
| First conduction terminal | 306b | Second conduction terminal | 306c |
| Frame scan start signal | stv | Drive clock signal | clk |
| Row cutting start signal | sth | Drive the energy signal that begins | le |
| Sweep signal | gclk | Drive waveforms data | Data |
| Look-up table | 121、321 | ? | ? |
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See also Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is the structural representation of display device of electronic paper one better embodiment of the present invention.Fig. 4 is the cut-away section structural representation of display device of electronic paper shown in Fig. 3.Fig. 5 is the drive waveforms figure of display device of electronic paper shown in Fig. 3.In Fig. 5, the latter half waveform (b) is the close-up schematic view of the first half waveform (a).Wherein, the first half waveform (a) eliminates and drives clock signal clk (see the latter half waveform (b)), and the latter half waveform (b) eliminates frame scan start signal stv (see the first half waveform (a)).This display device of electronic paper 3 comprises electronic paper display panel 30, sequential control circuit 32, scan drive circuit 34, data drive circuit 36 and public voltage generating circuit 38.This sequential control circuit 32 is connected respectively with this scan drive circuit 34 and this data drive circuit 36.This scan drive circuit 34, this data drive circuit 36 are connected with this electronic paper display panel 30 respectively with this public voltage generating circuit 38.
Multiple display units 305 that this electronic paper display panel 30 comprises multi-strip scanning line 302, insulate a plurality of data lines 304 crossing and rank in matrix with this multi-strip scanning line 302.Each display unit 305 comprises at the switch 306 of sweep trace 302 and this data line 304 infall, pixel electrode 308, public electrode 310 and the display medium layer 312 (see Fig. 4) that is sandwiched between this pixel electrode 308 and this public electrode 310.Wherein, in the present embodiment, each display unit 305 shares this public electrode 310 and this display medium layer 312.
This switch 306 comprises control end 306a, the first conduction terminal 306b and the second conduction terminal 306c.Preferably, this switch 306 is a thin film transistor (TFT) (Thin Film Transistor, TFT), then this control end 306a is grid, and this first conduction terminal 306b is source electrode, and this second conduction terminal 306c is drain electrode.Wherein, this control end 306a is connected to this scan drive circuit 34 by corresponding sweep trace 302, and this first conduction terminal 306b is connected to this data drive circuit 36 by corresponding data line 304, and this second conduction terminal 306c is connected to this pixel electrode 308.This public electrode 310 is connected to this public voltage generating circuit 38.
This display medium layer 312 is bonded between this public electrode 310 and this pixel electrode 308 by bonding agent.In this enforcement, this display medium layer 312 is bistable state electrophoresis showed medium layers, and adopts microcapsules formula electrophoresis showed medium layer.This electrophoresis showed medium layer 312 comprises multiple microcapsules 312a, is packaged with multiple first electrophoresis particle 312b, multiple second electrophoresis particle 312c and transparency liquid (sign) in each microcapsules 312a.The plurality of first electrophoresis particle 312b has different electricity and optical characteristics from the plurality of second electrophoresis particle 312c.In microcapsules 312a, displacement is there is in this first electrophoresis particle 312b and this second electrophoresis particle 312c according to the voltage put between this pixel electrode 308 and this public electrode 310, control the moving direction of this first electrophoresis particle 312b and this second electrophoresis particle 312c by controlling direction of an electric field correspondence, and then control the content shown by display device of electronic paper 3.Notably, the display medium layer 312 of the present invention also can adopt other structure, and such as, liquid in these microcapsules 312a is black liquor, then in these microcapsules 312a, only arrange white particles.
This public voltage generating circuit 38 is for providing common electric voltage to the plurality of display unit 305.
Store look-up table 321 in this sequential control circuit 32, in this look-up table 321, prestore multiple GTG transformational relation and the drive waveforms data corresponding with each GTG transformational relation.Wherein, described GTG transformational relation refers to that, from a gray scale variation to another GTG, described two GTGs both can be identical, also can be different.
The image data that the picture system 4 that this sequential control circuit 32 receives an outside exports, and compare next frame image data and present frame image data to obtain required drive waveforms data (the drive waveforms Data see in Fig. 5).This sequential control circuit 32 searches this look-up table 321, transfers required drive waveforms data and also exports the drive waveforms data transferred to this data drive circuit 36.This data drive circuit 36 receives described drive waveforms data, and provide corresponding drive waveforms extremely the plurality of display unit 305 according to described drive waveforms data, this electronic paper display panel 30 is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, described drive waveforms drives this electronic paper display panel 30 to show described multiframe transition picture and next frame image frame successively.Described content is all be described the driving process of transition picture below, and for image frame, it is different that this display device of electronic paper 3 need watch the time length correspondence of each frame image frame according to user, is also the existing technology of industry, so place repeats no more.For each frame transition picture, the specific works process of this display device of electronic paper 3 is as follows:
This sequential control circuit 32 is while transferring described drive waveforms data, further generation frame scan start signal stv, driving clock signal clk, row cutting start signal sth and driving beginning energy signal le, and provide this frame scan start signal stv to this scan drive circuit 34, provide this row cutting start signal sth and this driving to begin energy signal le to this data drive circuit 26.Particularly, this driving clock signal clk is periodically variable square-wave pulse signal.This frame scan start signal stv, this row cutting start signal sth and this driving are begun to be square-wave pulse signal by signal le.The duration on-fixed of the high level pulse of this frame scan start signal stv is identical, and the duration on-fixed of the high level pulse of this row cutting start signal sth is identical, and the duration on-fixed of the low level pulse of this driving beginning energy signal le is identical.
This frame scan start signal stv is the scanning commencing signal of each frame picture of an expression.This driving is begun signal le to be that an expression starts to apply drive waveforms to the signal of each row display unit 305.This row cutting start signal sth is that an expression starts to store the corresponding signal being applied to each row display unit 305 drive waveforms data.This driving clock signal clk is used for counting.
This scan drive circuit 34 receives this frame scan start signal stv, and within the duration of the high level pulse of this frame scan start signal stv, produces series of scanning signals gclk.This scan drive circuit 34 applies this sweep signal gclk successively to each bar sweep trace 302, to activate the display unit 305 be connected with each bar sweep trace 302 successively.High level pulse in sweep signal gclk shown in Fig. 5 is just sweep signal gclk, and low level pulse between each adjacent two high level pulses is actual exports interval blink between each sweep signal gclk for this scan drive circuit 34, this, interval was not actual waveform blink.The duration on-fixed that this scan drive circuit 34 is applied to the sweep signal gclk of each bar sweep trace 302 is identical.
This data drive circuit 36 receives this driving beginning energy signal le and this row cutting start signal sth, and these drive waveforms data, and provide corresponding drive waveforms extremely the plurality of display unit 305 according to described drive waveforms data, make this electronic paper display panel 30 be updated to next frame image frame via display multiframe transition picture from present frame image frame.Further, for the same frame transition picture shown by this electronic paper display panel 30, this data drive circuit 36 is the drive waveforms that provides the duration identical respectively each row display units 305 to this electronic paper display panel 30.For different frame transition picture, the duration on-fixed that this data drive circuit 36 is provided to the drive waveforms of same a line display unit 305 of this electronic paper display panel 30 is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame picture.
In addition, this data drive circuit 36 provides drive waveforms to before the corresponding line display unit 305 of this electronic paper display panel 30, and this data drive circuit 36 stores the drive waveforms data corresponding with described drive waveforms further.For each frame transition picture, the time that this data drive circuit 36 stores the corresponding often drive waveforms data of row display unit 305 is all identical.
Particularly, to show two frame transition pictures (see Fig. 5), for the former frame transition picture in this two frames transition picture, when the beginning of the driving from this sequential control circuit 32 that this data drive circuit 36 receives, energy signal le became high level pulse from low level pulse, this data drive circuit 36 exports corresponding drive waveforms to the display unit 305 of corresponding line, to charge to this row display unit 305 or to keep the state of former frame of this row display unit 305.When after the time of M (M is preferably positive integer) this driving individual clock signal clk, the row cutting start signal sth that this data drive circuit 36 receives from this sequential control circuit 32 becomes high level pulse from low level pulse, this data drive circuit 36 starts the drive waveforms data storing corresponding next line display unit 305, and comprises that to change the drive waveforms data stored be corresponding drive waveforms.Wherein, the time that these drive waveforms data are converted to drive waveforms for respective is very short, and the time of storing driver Wave data is longer, and the time that these drive waveforms data are converted to drive waveforms for respective can ignore compared with the time of storing driver Wave data.The time of storing driver Wave data is the time of L (L is preferably positive integer) this driving individual clock signal clk.Wherein, this driving clock signal clk is identical with the driving clock signal clk in prior art, and namely the time of this storing driver Wave data is identical with the time of storing driver Wave data in prior art.The time sum of the time of M this driving clock signal clk and L this driving clock signal clk is the current time being applied to the sweep signal gclk of this row display unit 305.
Further, when the beginning of the driving from this sequential control circuit 32 that this data drive circuit 36 receives, energy signal le became high level pulse from low level pulse again, this data drive circuit 36 exports the drive waveforms after described conversion to next line display unit 305.The drive principle of other row display unit 305 is analogized.Wherein, drive waveforms data refer to numeric type voltage, and drive waveforms refers to the waveform be made up of analog voltage.
For a frame transition picture after in this two frames transition picture, the drive principle of the former frame transition picture in its drive principle this two frames transition picture similar, the two key distinction is: the duration that this data drive circuit 36 is applied to the drive waveforms of each row display unit 305 is time of N (N is preferably positive integer) this driving individual clock signal clk.Wherein, M, N are preferably greater than the K value in prior art, and this driving clock signal clk is identical with the driving clock signal clk in prior art.Thus, extend the displaying time of a frame picture.Change ground, also can be greater than K value one of in M, N, another is equal to or less than K value, and M+N>2K.
Other frame transition picture is extended to by above-mentioned two frame transition pictures, the duration that this data drive circuit 36 is applied to the drive waveforms of each row display unit 305 is all greater than or is partly greater than the time of K this driving clock signal clk, as long as the frame number of this transition picture reduces compared with the frame number of transition picture in prior art.
In addition, also can limit the duration that this data drive circuit 36 is provided to the drive waveforms of each row display unit 305 of this electronic paper display panel 30 in the following way.At least there is a frame transition picture, the duration that this data drive circuit 36 is provided to the drive waveforms of each row display unit 305 of this electronic paper display panel 30 is greater than a predetermined time value, and the computing formula of this predetermined time value is:
, wherein, t
1represent this predetermined time value, t
2for the described time storing the corresponding often drive waveforms data of row display unit 305, T is total displaying time sum of described multiframe transition picture, P is in T.T. T, for different frame transition picture, all adopt the drive waveforms of identical duration to drive each row display unit 305 and adopt and above-mentioned time t
2identical time store the drive waveforms data of corresponding each row display unit 305 driving method, drive display device of electronic paper 3 can show the totalframes of transition picture, Q is total line number of the display unit 305 of this display device of electronic paper 3.
For different frame transition picture, the time on-fixed being applied to same a line display unit 305 drive waveforms due to this data drive circuit 36 is identical, and the time is longer, make this display device of electronic paper 3 need to show less transition picture and just can be updated to next frame image frame from present frame image frame, namely the number of times that each display unit 305 is charged is reduced, thus the start number of times of scan drive circuit 34 and assembly such as data drive circuit 36 grade can be reduced, and then reduce the electric energy loss of this display device of electronic paper 3.
Refer to Fig. 6, Fig. 6 is the driving method process flow diagram of this display device of electronic paper 3.This driving method comprises:
Step S1: obtain next frame image data, and compare to obtain required drive waveforms data with present frame image data;
Step S2: search the look-up table that prestores multiple drive waveforms data of corresponding multiple GTG transformational relation, transfer required drive waveforms data, and export drive waveforms data;
Step S3: receive and store described drive waveforms data;
Step S4: provide sweep signal to activate described corresponding line display unit;
Wherein, for same frame transition picture, this driving method is the sweep signal that the provides the duration identical respectively each row display unit to this display device of electronic paper 3, for different frame transition picture, the duration on-fixed that this driving method is provided to the sweep signal of same a line display unit of this display device of electronic paper 3 is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
Step S5: the drive waveforms data according to storing provide corresponding drive waveforms to drive this display device of electronic paper 3, makes this display device of electronic paper 3 be updated to next frame image frame via display multiframe transition picture from present frame image frame.
Wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, and described drive waveforms drives this display device of electronic paper 3 to show described multiframe transition picture and next frame image frame successively.
Understandably, for the same frame transition picture shown by this display device of electronic paper 3, this driving method is the drive waveforms that the provides the duration identical respectively each row display unit 305 to this display device of electronic paper 3, for different frame transition picture, the duration on-fixed that this driving method is provided to the drive waveforms of same a line display unit 305 of this display device of electronic paper 3 is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
The duration of the drive waveforms of each row display unit of this display device of electronic paper is provided to about this driving method, can limit in the following way: at least there is a frame transition picture, the duration that this driving method is provided to the drive waveforms of each row display unit of this display device of electronic paper is greater than a predetermined time value, and the computing formula of this predetermined time value is:
, wherein, t
1represent this predetermined time value, t
2for the described time storing the corresponding often drive waveforms data of row display unit, T is total displaying time sum of described multiframe transition picture, P is in T.T. T, for different frame transition picture, all adopt the drive waveforms of identical duration to drive each row display unit and adopt and above-mentioned time t
2identical time store the drive waveforms data of corresponding each row display unit driving method, drive display device of electronic paper can show the totalframes of transition picture, Q is total line number of the display unit of this display device of electronic paper.
Claims (28)
1. a driving method for display device of electronic paper, this driving method comprises:
Obtain next frame image data, and compare to know required drive waveforms data with present frame image data;
According to comparative result, provide required drive waveforms data; And
According to required drive waveforms data, there is provided the drive waveforms corresponding with required drive waveforms data to drive this display device of electronic paper, this display device of electronic paper is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, described drive waveforms drives this display device of electronic paper to show described multiframe transition picture and next frame image frame successively,
It is characterized in that: for the same frame transition picture shown by this display device of electronic paper, this driving method is the drive waveforms that the provides the duration identical respectively each row display unit to this display device of electronic paper, for different frame transition picture, the duration on-fixed that this driving method is provided to the drive waveforms of same a line display unit of this display device of electronic paper is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
2. the driving method of display device of electronic paper as claimed in claim 1, it is characterized in that: after completeer next frame image data and present frame image data, this driving method comprises further: according to comparative result, search the look-up table that prestores multiple drive waveforms data of corresponding multiple GTG transformational relation, transfer required drive waveforms data, and required drive waveforms data are provided.
3. the driving method of display device of electronic paper as claimed in claim 2, it is characterized in that: for every frame transition picture, provide drive waveforms to the corresponding line display unit of this display device of electronic paper before, this driving method comprises further and stores drive waveforms data corresponding with described drive waveforms.
4. the driving method of display device of electronic paper as claimed in claim 3, is characterized in that: for different frame transition picture, and the time storing the corresponding often drive waveforms data of row display unit is all identical.
5. the driving method of display device of electronic paper as claimed in claim 4, it is characterized in that: there is at least one frame transition picture, the duration that this driving method is provided to the drive waveforms of each row display unit of this display device of electronic paper is greater than a predetermined time value, and the computing formula of this predetermined time value is:
, wherein, t
1represent this predetermined time value, t
2for the described time storing the corresponding often drive waveforms data of row display unit, T is total displaying time sum of described multiframe transition picture, P is in T.T. T, for different frame transition picture, all adopt the drive waveforms of identical duration to drive each row display unit and adopt and above-mentioned time t
2identical time store the drive waveforms data of corresponding each row display unit driving method, drive display device of electronic paper can show the totalframes of transition picture, Q is total line number of the display unit of this display device of electronic paper.
6. the driving method of display device of electronic paper as claimed in claim 5, it is characterized in that: in described multiframe transition picture, there is partial frame transition picture, the duration that this driving method is provided to the drive waveforms of each row display unit of this display device of electronic paper is all greater than this predetermined time value, and for other frame transition picture in described multiframe transition picture, the duration that this driving method is applied to the drive waveforms of each row display unit of this display device of electronic paper is equal to this predetermined time value.
7. the driving method of display device of electronic paper as claimed in claim 1, it is characterized in that: provide drive waveforms to this display device of electronic paper corresponding line display unit before, described driving method comprises further provides sweep signal to receive drive waveforms to activate described corresponding line display unit, for the same frame transition picture shown by this display device of electronic paper, this driving method is the sweep signal that the provides the duration identical respectively each row display unit to this display device of electronic paper, for different frame transition picture, the duration on-fixed that this driving method is provided to the sweep signal of same a line display unit of this display device of electronic paper is identical, the frame number of display transition picture is reduced with the duration of charging by extending to small part frame transition picture.
8. a display device of electronic paper, it comprises:
Electronic paper display panel, this electronic paper display panel comprises multiple display units of the seniority among brothers and sisters in matrix;
Sequential control circuit, this sequential control circuit for obtaining next frame image data, and compares to know required drive waveforms data with present frame image data, and provides required drive waveforms data according to comparative result; And
Data drive circuit, this data drive circuit receives described drive waveforms data, and provide corresponding drive waveforms extremely the plurality of display unit according to described drive waveforms data, this electronic paper display panel is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, described drive waveforms drives this electronic paper display panel to show described multiframe transition picture and next frame image frame successively,
It is characterized in that: for the same frame transition picture shown by this electronic paper display panel, this data drive circuit is the drive waveforms that the provides the duration identical respectively each row display unit to this electronic paper display panel, for different frame transition picture, the duration on-fixed that this data drive circuit is provided to the drive waveforms of same a line display unit of this electronic paper display panel is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
9. display device of electronic paper as claimed in claim 8, it is characterized in that: this sequential control circuit stores a look-up table, this look-up table stores multiple GTG transformational relation and the drive waveforms data corresponding with each GTG transformational relation, this sequential control circuit searches this look-up table according to comparative result, transfers required drive waveforms data and also exports the drive waveforms data transferred to this data-driven Wave data.
10. display device of electronic paper as claimed in claim 9, it is characterized in that: for every frame transition picture, this data drive circuit provide drive waveforms to the corresponding line display unit of this electronic paper display panel before, this data drive circuit stores the drive waveforms data corresponding with described drive waveforms further.
11. display device of electronic paper as claimed in claim 10, is characterized in that: to different frame transition picture, and the time that this data drive circuit stores the corresponding often drive waveforms data of row display unit is all identical.
12. display device of electronic paper as claimed in claim 11, it is characterized in that: there is at least one frame transition picture, the duration that this data drive circuit is provided to the drive waveforms of each row display unit of this electronic paper display panel is greater than a predetermined time value, and the computing formula of this predetermined time value is:
, wherein, t
1represent this predetermined time value, t
2for the described time storing the corresponding often drive waveforms data of row display unit, T is total displaying time sum of described multiframe transition picture, P is in T.T. T, for different frame transition picture, all adopt the drive waveforms of identical duration to drive each row display unit and adopt and above-mentioned time t
2identical time store the drive waveforms data of corresponding each row display unit driving method, drive display device of electronic paper can show the totalframes of transition picture, Q is total line number of the display unit of this display device of electronic paper.
13. display device of electronic paper as claimed in claim 12, it is characterized in that: in described multiframe transition picture, there is partial frame picture, the duration that this data drive circuit is provided to the drive waveforms of each row display unit of this electronic paper display panel is all greater than this predetermined time value, and for other frame picture in described multiframe transition picture, the duration that this data drive circuit is provided to the drive waveforms of each row display unit of this electronic paper display panel is equal to this predetermined time value.
14. display device of electronic paper as claimed in claim 8, it is characterized in that: this display device of electronic paper comprises scan drive circuit further, this scan drive circuit is used for providing sweep signal to receive drive waveforms to activate corresponding display unit, for the same frame transition picture shown by this electronic paper display panel, this scan drive circuit is the sweep signal that the provides the duration identical respectively each row display unit to this electronic paper display panel, for different frame transition picture, the duration on-fixed that this scan drive circuit is provided to the sweep signal of same a line display unit of this electronic paper display panel is identical, the frame number of display transition picture is reduced with the duration of charging by extending to small part frame transition picture.
The driving method of 15. 1 kinds of display device, this driving method comprises:
Obtain next frame image data, and compare to know required drive waveforms data with present frame image data;
According to comparative result, provide required drive waveforms data; And
According to required drive waveforms data, there is provided the drive waveforms corresponding with required drive waveforms data to drive this display device, this display device is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, and described drive waveforms drives this display device to show described multiframe transition picture and next frame image frame successively;
It is characterized in that: for the same frame transition picture shown by this display device, this driving method is the drive waveforms that the provides the duration identical respectively each row display unit to this display device, for different frame transition picture, the duration on-fixed that this driving method is provided to the drive waveforms of same a line display unit of this display device is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
The driving method of 16. display device as claimed in claim 15, it is characterized in that: after completeer next frame image data and present frame image data, this driving method comprises further: according to comparative result, search the look-up table that prestores multiple drive waveforms data of corresponding multiple GTG transformational relation, transfer required drive waveforms data, and required drive waveforms data are provided.
The driving method of 17. display device as claimed in claim 16, it is characterized in that: for every frame transition picture, provide drive waveforms to the corresponding line display unit of this display device before, this driving method comprises further and stores drive waveforms data corresponding with described drive waveforms.
The driving method of 18. display device as claimed in claim 17, is characterized in that: for different frame transition picture, and the time storing the corresponding often drive waveforms data of row display unit is all identical.
The driving method of 19. display device as claimed in claim 18, it is characterized in that: there is at least one frame transition picture, the duration that this driving method is provided to the drive waveforms of each row display unit of this display device is greater than a predetermined time value, and the computing formula of this predetermined time value is:
, wherein, t
1represent this predetermined time value, t
2for the described time storing the corresponding often drive waveforms data of row display unit, T is total displaying time sum of described multiframe transition picture, P is in T.T. T, for different frame transition picture, all adopt the drive waveforms of identical duration to drive each row display unit and adopt and above-mentioned time t
2identical time store the drive waveforms data of corresponding each row display unit driving method, drive display device can show the totalframes of transition picture, Q is total line number of the display unit of this display device.
The driving method of 20. display device as claimed in claim 18, it is characterized in that: in described multiframe transition picture, there is partial frame transition picture, the duration that this driving method is provided to the drive waveforms of each row display unit of this display device is all greater than this predetermined time value, and for other frame transition picture in described multiframe transition picture, the duration that this driving method is applied to the drive waveforms of each row display unit of this display device is equal to this predetermined time value.
The driving method of 21. display device as claimed in claim 18, it is characterized in that: provide drive waveforms to this display device corresponding line display unit before, described driving method comprises further provides sweep signal to receive drive waveforms to activate described corresponding line display unit, for the same frame transition picture shown by this display device, this driving method is the sweep signal that the provides the duration identical respectively each row display unit to this display device, for different frame transition picture, the duration on-fixed that this driving method is provided to the sweep signal of same a line display unit of this display device is identical, the frame number of display transition picture is reduced with the duration of charging by extending to small part frame transition picture.
22. 1 kinds of display device, it comprises:
Display panel, this display panel comprises multiple display units of the seniority among brothers and sisters in matrix;
Sequential control circuit, this sequential control circuit for obtaining next frame image data, and compares to know required drive waveforms data with present frame image data, and provides required drive waveforms data according to comparative result; And
Data drive circuit, this data drive circuit receives described drive waveforms data, and provide corresponding drive waveforms extremely the plurality of display unit according to described drive waveforms data, this display panel is made to be updated to next frame image frame via display multiframe transition picture from present frame image frame, wherein, the corresponding present frame image data of present frame image frame, the corresponding next frame image data of next frame image frame, this multiframe transition picture is between present frame image frame and next frame image frame, described drive waveforms drives this display panel to show described multiframe transition picture and next frame image frame successively,
It is characterized in that: for the same frame transition picture shown by this display panel, this data drive circuit is the drive waveforms that the provides the duration identical respectively each row display unit to this display panel, for different frame transition picture, the duration on-fixed that this data drive circuit is provided to the drive waveforms of same a line display unit of this display panel is identical, reduces the frame number of display transition picture with the duration of charging by extending to small part frame transition picture.
23. display device as claimed in claim 22, it is characterized in that: this sequential control circuit stores a look-up table, this look-up table stores multiple GTG transformational relation and the drive waveforms data corresponding with each GTG transformational relation, this sequential control circuit searches this look-up table according to comparative result, transfers required drive waveforms data and also exports the drive waveforms data transferred to this data-driven Wave data.
24. display device as claimed in claim 23, it is characterized in that: for every frame transition picture, this data drive circuit provide drive waveforms to the corresponding line display unit of this electric display panel before, this data drive circuit stores the drive waveforms data corresponding with described drive waveforms further.
25. display device as claimed in claim 24, is characterized in that: to different frame transition picture, and the time that this data drive circuit stores the corresponding often drive waveforms data of row display unit is all identical.
26. display device as claimed in claim 25, it is characterized in that: there is at least one frame transition picture, the duration that this data drive circuit is provided to the drive waveforms of each row display unit of this display panel is greater than a predetermined time value, and the computing formula of this predetermined time value is:
, wherein, t
1represent this predetermined time value, t
2for the described time storing the corresponding often drive waveforms data of row display unit, T is total displaying time sum of described multiframe transition picture, P is in T.T. T, for different frame transition picture, all adopt the drive waveforms of identical duration to drive each row display unit and adopt and above-mentioned time t
2identical time store the drive waveforms data of corresponding each row display unit driving method, drive display device can show the totalframes of transition picture, Q is total line number of the display unit of this display device.
27. display device as claimed in claim 26, it is characterized in that: in described multiframe transition picture, there is partial frame picture, the duration that this data drive circuit is provided to the drive waveforms of each row display unit of this display panel is all greater than this predetermined time value, and for other frame picture in described multiframe transition picture, the duration that this data drive circuit is provided to the drive waveforms of each row display unit of this display panel is equal to this predetermined time value.
28. display device as claimed in claim 22, it is characterized in that: this display device comprises scan drive circuit further, this scan drive circuit is used for providing sweep signal to receive drive waveforms to activate corresponding display unit, for the same frame transition picture shown by this display panel, this scan drive circuit is the sweep signal that the provides the duration identical respectively each row display unit to this display panel, for different frame transition picture, the duration on-fixed that this scan drive circuit is provided to the sweep signal of same a line display unit of this display panel is identical, the frame number of display transition picture is reduced with the duration of charging by extending to small part frame transition picture.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102122506A TW201501105A (en) | 2013-06-25 | 2013-06-25 | Electronic paper display device and display device and driving method thereof |
| TW102122506 | 2013-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104252848A true CN104252848A (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310264826.4A Pending CN104252848A (en) | 2013-06-25 | 2013-06-28 | Electronic paper display device, display device and driving method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104252848A (en) |
| TW (1) | TW201501105A (en) |
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| CN109326260A (en) * | 2018-09-12 | 2019-02-12 | 友达光电股份有限公司 | Multiplexer driving method and display device |
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