Summary of the invention
For solving prior art, show the slow technical matters of frame updating filling, be necessary to provide a kind of display device of frame updating speed.
The slow technical matters of frame updating that shows dress for solving prior art Electronic Paper, is necessary to provide a kind of display device of electronic paper of frame updating speed of display device.
The slow technical matters of frame updating that shows dress for solving prior art, is necessary to provide a kind of driving method of display device of frame updating speed.
The invention provides a kind of display device of electronic paper, it is for display frame, and this display device of electronic paper comprises:
Electronic paper display panel, it comprises the display unit for display frame of matrix seniority among brothers and sisters;
Data drive circuit, this data drive circuit is for providing the display unit of data voltage to this matrix seniority among brothers and sisters;
Scan drive circuit, this scan drive circuit is used for providing sweep signal to receive data voltage to activate corresponding display unit;
Public voltage generating circuit, this public voltage generating circuit is for providing the display unit of common electric voltage to this matrix seniority among brothers and sisters;
Wherein, the display frame of this display device of electronic paper comprises image frame and the transition picture between some two adjacent and different image frames of the image data that correspondence image system is exported, this display device of electronic paper is removed last image frame in this two adjacent and different image frame by showing described transition picture, at least one transition picture has two kinds or above different colours, and wherein at least showing one, this is while having the transition picture of two kinds or above different colours for this display device of electronic paper:
One, this electronic paper display panel has the first row and the second row display unit, and being positioned at all display units on this first and second row, to meet two line positions identical and GTG is identical in the shown picture color of the same display unit listing;
They are two years old, this electronic paper display panel also has at least one the third line display unit, and the color that has the shown picture of at least one display unit in this third line display unit is different from the color of the shown picture of display unit that is positioned at same row in above-mentioned first and second row display unit;
Its three, this scan drive circuit provides sweep signal to above-mentioned first and second row display unit simultaneously, and postpones or provide in advance sweep signal to this at least one the third line display unit with respect to this first and second row display unit.
The invention provides a kind of display device, it is for display frame, and this display device comprises:
Display panel, it comprises the display unit for display frame of matrix seniority among brothers and sisters;
Data drive circuit, this data drive circuit is for providing the display unit of data voltage to this matrix seniority among brothers and sisters;
Scan drive circuit, this scan drive circuit is used for providing sweep signal to receive data voltage to activate corresponding display unit;
Public voltage generating circuit, this public voltage generating circuit is for providing the display unit of common electric voltage to this matrix seniority among brothers and sisters;
Wherein, the display frame of this display device comprises image frame and the transition picture between some two adjacent and different image frames of the image data that correspondence image system is exported, this display device is removed last image frame in this two adjacent and different image frame by showing described transition picture, at least one transition picture has two kinds or above different colours, and wherein at least showing one, this is while having the transition picture of two kinds or above different colours for this display device:
One, this display panel has the first row and the second row display unit, and being positioned at all display units on this first and second row, to meet two line positions identical and GTG is identical in the shown picture color of the same display unit listing;
They are two years old, this display panel also has at least one the third line display unit, and the color that has the shown picture of at least one display unit in this third line display unit is different from the color of the shown picture of display unit that is positioned at same row in above-mentioned first and second row display unit;
Its three, this scan drive circuit provides sweep signal to above-mentioned first and second row display unit simultaneously, and postpones or provide in advance sweep signal to this at least one the third line display unit with respect to this first and second row display unit.
The invention provides a kind of driving method of display device, wherein, this display device comprises the display unit for display frame of matrix seniority among brothers and sisters, the display frame of this display device comprises image frame and the transition picture between some two adjacent and different image frames of the image data that correspondence image system is exported, this display device is removed last image frame in this two adjacent and different image frame by showing described transition picture, at least one transition picture has two kinds or above different colours, wherein, at least showing one, this is while having the transition picture of two kinds or above different colours for this display device:
One, this display device has the first row and the second row display unit, and being positioned at all display units on this first and second row, to meet two line positions identical and GTG is identical in the shown picture color of the same display unit listing;
They are two years old, this display device also has at least one the third line display unit, and the color that has the shown picture of at least one display unit in this third line display unit is different from the color of the shown picture of display unit that is positioned at same row in above-mentioned first and second row display unit;
This driving method comprises:
The display unit of data voltage to this matrix seniority among brothers and sisters is provided;
Provide sweep signal to receive data voltage to activate corresponding display unit;
The display unit of common electric voltage to this matrix seniority among brothers and sisters is provided, to coordinate with data voltage, drives display unit to show corresponding picture;
Wherein, at least showing above-mentioned one, this is while having the transition picture of two kinds or above different colours for this display device, provide sweep signal to above-mentioned first and second row display unit simultaneously, and postpone or provide in advance sweep signal to this at least one the third line display unit with respect to this first and second row display unit.
Because display device of electronic paper of the present invention is at least when showing that above-mentioned this transition picture with two kinds or above different colours is removed last image frame, provide sweep signal to above-mentioned first and second row display unit simultaneously, thereby reduce the time of removing image frame.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.The present embodiment be take display device of electronic paper and driving method thereof and is described as example, and the present invention also can be applied to the display device of other applicable type.
See also Fig. 1 and Fig. 2, the circuit block diagram that Fig. 1 is display device of electronic paper of the present invention.Fig. 2 is the cut-away section structural representation of display device of electronic paper of the present invention.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.This sequential control circuit 12 is connected respectively with this scan drive circuit 14, this data drive circuit 16 and this public voltage generating circuit 18.This sequential control circuit 12 receives the image data of a picture system 2, and produces corresponding data-signal and control signal according to this image data.This scan drive circuit 14 provides corresponding sweep signal to this electronic paper display panel 10 according to this control signal correspondence.This data drive circuit 16 provides corresponding data voltage to this electronic paper display panel 10 according to this data-signal.This public voltage generating circuit 18 provides corresponding common electric voltage to this electronic paper display panel 10 according to this control signal.
This electronic paper display panel 10 comprises that many sweep traces that are parallel to each other 102, many are parallel to each other and and crossing data line 104, a plurality of switch 106, a plurality of pixel electrode 108, the public electrode 110 at this sweep trace 102 and this data line 104 infalls of these multi-strip scanning line 102 insulation and be sandwiched in the demonstration medium layer 112 (seeing Fig. 2) between the plurality of pixel electrode 108 and this public electrode 110.This demonstration medium layer 112 is bonded between this public electrode 110 and the plurality of pixel electrode 108 by bonding agent.In this enforcement, this demonstration medium layer 112 is that bistable state electrophoresis shows medium layer, and adopts microcapsules formula electrophoresis showed medium layer.This electrophoresis showed medium layer 112 comprises a plurality of microcapsules 112a, is packaged with a plurality of the first electrophoresis particle 112b, a plurality of the second electrophoresis particle 112c and transparency liquid (not indicating) in each microcapsules 112a.The plurality of the first electrophoresis particle 112b has different electricity and optical characteristics from the plurality of the second electrophoresis particle 112c.According to the voltage putting between this pixel electrode 108 and this public electrode 110, in microcapsules 112a, there is displacement in this first electrophoresis particle 112b and this second electrophoresis particle 112c, by controlling the moving direction of corresponding this first electrophoresis particle 112b of control of direction of an electric field and this second electrophoresis particle 112c, and then control the shown content of display device of electronic paper 1.Must note, demonstration medium layer 112 of the present invention also can adopt other structure, and for example the liquid in these microcapsules 112a is black liquor, in these microcapsules 112a, white particles is only set.
This switch 106 comprises control end 106a, the first conduction terminal 106b and the second conduction terminal 106c.Preferably, this switch 106 is a thin film transistor (TFT) (Thin Film Transistor, TFT), and this control end 106a is grid, and this first conduction terminal 106b is source electrode, and this second conduction terminal 106c is drain electrode.Wherein, this control end 106a is connected to this scan drive circuit 14 by corresponding sweep trace 102, and this first conduction terminal 106b is connected to this data drive circuit 16 by corresponding data line 104, and this second conduction terminal 106c is connected to this pixel electrode 108.This public electrode 110 is connected to this public voltage generating circuit 18.
Each pixel electrode 108 and these public electrode 110 definition one display units 20.In the present embodiment, this display device of electronic paper 1 adopts single-point inversion driving mode, and the shown picture color of each display unit 20 is different from the shown picture color of display unit 20 being adjacent.Refer to Fig. 3, Fig. 3 is the seniority among brothers and sisters schematic diagram of the display unit 20 of this electronic paper display panel 10.According to the type of drive that in this enforcement, this Electronic Paper adopts, this display unit 20 shows group 203 by being divided into the first demonstration group 201 and second dividing of odd-numbered line and even number line.Wherein, this first shows that group 201 forms for the display unit 20 by odd-numbered line, and this second shows that group 203 forms for the display unit 20 by even number line.Variable ground, this first demonstration group 201 also can form for the display unit 20 by odd-numbered line, and this second demonstration group 203 also can form for the display unit 20 by even number line.Separately, can imagine that when this display device of electronic paper 1 adopts other type of drive, the multirow display unit 20 on this electronic paper display panel 10 also can be divided otherwise in other change embodiment, and also can be divided into three even a plurality of demonstration groups.
Refer to Fig. 4, Fig. 4 is the drive waveforms of this display device of electronic paper 1 and the schematic diagram of corresponding display frame.Particularly, V1 shown in Fig. 4 is the corresponding two kinds of common electric voltages that are applied to this public electrode 110 of this public voltage generating circuit 18 with V2, is defined as respectively the first common electric voltage and the second common electric voltage.D1 and D2 are that data drive circuit 16 is applied to the first data voltage and the second data voltage on a certain data line 104.G1-G2n is that scan drive circuit 14 is applied to the sweep signal on this multi-strip scanning line 102.
The display frame of this display device of electronic paper 1 comprises image frame and the transition picture between some two adjacent and different image frames of the image data that correspondence image system 2 is exported, this display device of electronic paper 1 is removed last image frame in this two adjacent and different image frame by showing described transition picture, and at least one transition picture has two kinds or above different colours.Wherein, at least showing one, this is while having the transition picture of two kinds or above different colours: one for this display device of electronic paper 1, this electronic paper display panel 10 has the first row and the second row display unit 20, and being positioned at all display units on this first and second row 20, to meet two line positions identical and GTG is identical in the shown picture color of the same display unit listing; They are two years old, this electronic paper display panel 10 also has at least one the third line display unit 20, and the color that has at least one display unit 20 shown picture in this third line display unit 20 is different from the color of display unit 20 shown pictures that is positioned at same row in above-mentioned first and second row display unit 20; Its three, this scan drive circuit 14 provides sweep signal to above-mentioned first and second row display unit 20 simultaneously, and postpones or provide in advance sweep signal to this at least one the third line display unit with respect to this first and second row display unit.Wherein, in the matrix seniority among brothers and sisters of display unit 20, before this first row display unit 20 can be positioned at this second row display unit 20, after also can being positioned at this second row display unit 20.
Further, at least showing described one, this is while having the transition picture of two kinds or above different colours for this display device of electronic paper 1: they are four years old, this public voltage generating circuit 18 provides constant common electric voltage to this public electrode, accordingly, this data drive circuit 16 provides different data voltage respectively to corresponding display unit 20 so that this display device of electronic paper 1 show described one this there is the transition picture of two kinds or above different colours.In the present embodiment, this data drive circuit 16 provides two different data voltages respectively to corresponding display unit 20, a data voltage in this two different data voltage and the difference of this common electric voltage are greater than 0, the difference of another data voltage and this common electric voltage is less than 0 so that this display device of electronic paper 1 show described one this there is the transition picture of two kinds or above different colours.Wherein, this two different data voltage is identical with the absolute value of the difference of this common electric voltage.
Now take and at two image frames 31,32, insert four transition pictures and this four transition picture to be followed successively by a complete black transition picture 33, two gridiron pattern transition pictures 34,35 and a complete white transition picture 36 (seeing Fig. 4) be example, the drive principle of this display device of electronic paper 1 is described.Wherein, this gridiron pattern transition picture is that the shown picture color of arbitrary display unit 20 is different from and is adjacent the shown picture color of display unit 20.In other change embodiment, between two image frames 31,32, also can select only to insert the transition picture of other number, as a plurality of transition pictures such as 1,2.In addition, this gridiron pattern transition picture also can be other transition picture that comprises two kinds of different colours.
The drive principle of this display device of electronic paper 1 is as follows:
When this display device of electronic paper 1 is updated to image frame 32 from show image picture 31, this sequential control circuit 12 according to from the received image data to should image frame 32 of this picture system 2, produce to should complete black transition picture 33, data-signal and the corresponding control signal of this two gridiron patterns transition picture 34,35, this complete white transition picture 36 and this image frame 32.Particularly, this data-signal comprises the first data-signal and the second data-signal, wherein, this first data-signal is to should image frame 32, this second data-signal to should complete black transition picture 33, two gridiron pattern transition pictures 34,35 and this complete white transition picture 36.This control signal comprises the first voltage control signal, second voltage control signal, the first scan control signal and the second scan control signal.
First, 12 outputs of this sequential control circuit control signal to this public voltage generating circuit 18 to the second data-signal to this data drive circuit 16, output the first scan control signal to this scan drive circuit 14 and output second voltage that should complete black transition picture 33.This scan drive circuit 14 applies sweep signal G1-G2n to each row display unit 20 on this electronic paper display panel 10, to activate successively the display unit 20 being connected with each sweep trace 102 successively according to the first scan control signal correspondence receiving.This data drive circuit 16 produces the second data voltage D2 according to the second data-signal correspondence receiving, and exports this second data voltage D2 to the pixel electrode 108 of each display unit 20 being activated by these many data lines 104.This public voltage generating circuit 18 produces the second common electric voltage V2 according to the second voltage control signal receiving is corresponding, and provides this second common electric voltage V2 to this public electrode 110.Wherein, this second data voltage D2 is greater than this second common electric voltage V2.And the absolute value of the difference of this second common electric voltage V2 and this second data voltage D2 is greater than the absolute value of the difference of this first common electric voltage V1 and this second data voltage D2.Thereby this electronic paper display panel 10 shows the complete black transition picture of a single GTG.
The second, 12 outputs of this sequential control circuit to two different the second data-signals that should gridiron pattern transition picture 34 to this data drive circuit 16, output the second scan control signal to this scan drive circuit 14 and output the first voltage control signal to this public voltage generating circuit 18.This scan drive circuit 14 according to the second scan control signal receiving corresponding first simultaneously output scanning signal G1, G3 ..., each row display unit 20 in G2n-1 to the first demonstration group 201, and then simultaneously output scanning signal G2, G4 ..., each row display unit 20 in G2n to the second demonstration group 203.This public voltage generating circuit 18 produces the first common electric voltage V1 according to the first voltage control signal correspondence receiving, and provides this first common electric voltage V1 to this public electrode 110.Variable ground, this scan drive circuit 14 according to the second scan control signal receiving also can be corresponding first simultaneously output scanning signal G2, G4 ..., each row display unit 20 in G2n to the second demonstration group 203, and then simultaneously output scanning signal G1, G3 ..., each row display unit 20 in G2n-1 to the first demonstration group 201.This data drive circuit 16 produces two the second different data voltage D2 according to receive two different the second data-signals are corresponding, and exports this two different second data voltage D2 to these many data lines 104.Particularly, the second data voltage D2 that this data drive circuit 16 exports on this first same a line display unit 20 showing in group 201 is identical, the the second data voltage D2 exporting on this second same a line display unit 20 showing in group 203 is also identical, for this first same a line display unit 20 showing in group 201 and this second demonstration group 203, the second data voltage that this data drive circuit 16 is exported is different, and in this two different second data voltage D2, the difference of one second data voltage D2 and this first common electric voltage V1 is greater than 0, the difference of another the second data voltage D2 and this first common electric voltage V1 is less than 0.That is, this first shows that group 201 is different with the color of same a line display unit 20 shown pictures in this second demonstration group 203.Thereby this electronic paper display panel 10 shows a gridiron pattern transition picture.In the present embodiment, this two different second data voltage D2 is identical with the absolute value of the difference of this first common electric voltage V1.
The 3rd, this gridiron pattern transition picture 35 is basic identical with the type of drive of this gridiron pattern transition picture 34, the two key distinction is: the second data voltage D2 that this data drive circuit 16 is applied on same display unit 20 is different, and wherein one second data voltage D2 and the formed electric field of this first common electric voltage V1 are for just, and another the second data voltage D2 and the formed electric field of this first common electric voltage V1 are for negative.In other words, the shown picture color of each display unit 20 on this gridiron pattern transition picture 35 from this gridiron pattern transition picture 34 and the shown picture color of same display unit 20 different, for example, the shown picture color of a display unit 20 on this gridiron pattern transition picture 35 is white, and the shown picture color of same display unit 20 on this gridiron pattern transition picture 34 is black.Repeat no more the type of drive of this gridiron pattern transition picture 35 herein.
The 4th, this complete white transition picture 36 is basic identical with the type of drive of this complete black transition picture 33, the two key distinction is: first, for the black-to- white transition picture 33,36 of the different solid color of this second colors, the second common electric voltage V2 that these public voltage generating circuit 18 correspondences are applied to respectively this public electrode 110 is different.In the present embodiment, this public voltage generating circuit 18 applies two different the second common electric voltage V2 to this public electrode 110, with correspondence, drives this electronic paper display panel 10 to show the transition picture 33,36 of the solid color that described black-white colors is different.Wherein, one second common electric voltage V2 in this two different second common electric voltage V2 and the difference of this first common electric voltage V1 are greater than 0, and the difference of another the second common electric voltage V2 and this first common electric voltage V1 is less than 0.
Further, for the black-to- white transition picture 33,36 of the different solid color of this second colors, the second data voltage D2 that this data drive circuit 16 is applied to the plurality of pixel electrode 108 is all different.The type of drive of this complete white transition picture 36 is also repeated no more herein.
The 5th, when above-mentioned four transition pictures all show complete after, this sequential control circuit 12 start output to the first data-signal that should image frame 32 to this data drive circuit 16, export this first scan control signal to this scan drive circuit 14 and export this first voltage control signal to this public voltage generating circuit 18.This scan drive circuit 14 applies sweep signal to each row display unit 20 on this electronic paper display panel 10 successively according to this first scan control signal correspondence.This data drive circuit 16 produces the first data voltage D1 and exports this first data voltage D1 to the plurality of pixel electrode 108 according to this first data-signal is corresponding.This public voltage generating circuit 18 provides this first common electric voltage V1 to this public electrode 110 according to this first voltage control signal correspondence.Thereby this electronic paper display panel 10 shows the image frame of a corresponding image data.
In the present embodiment, the first common electric voltage V1 that this public voltage generating circuit 18 is exported is a constant voltage, drives this electronic paper display panel 10 to show each image frame and gridiron pattern picture 34,35.
As shown in the above, when showing, this Electronic Paper comprises as mentioned above the gridiron pattern transition picture 34 of two kinds of different colours and 35 time, this scan drive circuit 14 is selected first to activate this first demonstration group 201 and second simultaneously and is shown each display unit 20 showing in group in group 203, activate again another simultaneously and show each display unit 20 in group, thereby reduce the time of removing image frame 31.
Refer to Fig. 5, the driving method process flow diagram that Fig. 5 is display device of electronic paper.This display device of electronic paper comprises the display unit for display frame of matrix seniority among brothers and sisters, the display frame of this display device of electronic paper comprises image frame and the transition picture between some two adjacent and different image frames of the image data that correspondence image system is exported, this display device of electronic paper is removed last image frame in this two adjacent and different image frame by showing described transition picture, at least one transition picture has two kinds or above different colours, wherein, at least showing one, this is while having the transition picture of two kinds or above different colours for this display device of electronic paper:
One, this display device of electronic paper has the first row and the second row display unit, and being positioned at all display units on this first and second row, to meet two line positions identical and GTG is identical in the shown picture color of the same display unit listing;
They are two years old, this display device of electronic paper also has at least one the third line display unit, and the color that has the shown picture of at least one display unit in this third line display unit is different from the color of the shown picture of display unit that is positioned at same row in above-mentioned first and second row display unit;
This driving method comprises:
Step S1: the display unit of data voltage to this matrix seniority among brothers and sisters is provided.
Step S2: provide sweep signal to receive data voltage to activate corresponding display unit.
Wherein, at least showing above-mentioned one, this is while having the transition picture of two kinds or above different colours for this display device of electronic paper, provide sweep signal to above-mentioned first and second row display unit simultaneously, and postpone or provide in advance sweep signal to this at least one the third line display unit with respect to this first and second row display unit.
Step S3: the display unit of common electric voltage to this matrix seniority among brothers and sisters is provided, drives display unit to show corresponding picture to coordinate with data voltage.
Particularly, at least showing described one, this is while having the transition picture of two kinds or above different colours for this display device: the constant common electric voltage display unit to this matrix seniority among brothers and sisters is provided, accordingly, provide different data voltage respectively to corresponding display unit so that this display device show described one this there is the transition picture of two kinds or above different colours.In the present embodiment, provide two different data voltages respectively to corresponding display unit, a data voltage in this two different data voltage and the difference of this common electric voltage are greater than 0, the difference of another data voltage and this common electric voltage is less than 0 so that this display device show described one this there is the transition picture of two kinds or above different colours.This two different data voltage is identical with the absolute value of the difference of this common electric voltage.
In the matrix seniority among brothers and sisters of this display device of electronic paper, before this first row display unit can be positioned at this second row display unit, after also can being positioned at this second row display unit.
In the present embodiment, in described its in two, this display device comprises multirow the third line display unit, all display units on this multirow the third line meet multirow and are positioned at that the shown picture color of the same display unit listing is identical and GTG is identical, and different in the shown picture color of the same display unit listing from above-mentioned first and second line position.At least showing described one, this is while having the transition picture of two kinds or above different colours for this display device: provide sweep signal to above-mentioned multirow the third line display unit simultaneously.Separately, this first row, the second row and this multirow the third line display unit are alternately ranked.Arbitrary display unit on this first row, the second row and this multirow the third line is different from the color of its display unit around.
Those skilled in the art will be appreciated that; above embodiment is only for the present invention is described; and be not used as limitation of the invention; as long as in connotation scope of the present invention, the appropriate change that above embodiment is done and changing all drop on the scope of protection of present invention in.