CN102243410B - Bistable display and driving method of panel thereof - Google Patents
Bistable display and driving method of panel thereof Download PDFInfo
- Publication number
- CN102243410B CN102243410B CN201110186695.3A CN201110186695A CN102243410B CN 102243410 B CN102243410 B CN 102243410B CN 201110186695 A CN201110186695 A CN 201110186695A CN 102243410 B CN102243410 B CN 102243410B
- Authority
- CN
- China
- Prior art keywords
- voltage
- driving
- negative polarity
- positive polarity
- common voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000008569 process Effects 0.000 claims abstract description 39
- 239000002245 particle Substances 0.000 claims abstract description 20
- 230000009467 reduction Effects 0.000 claims description 25
- 239000011521 glass Substances 0.000 claims description 8
- 238000001962 electrophoresis Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 14
- 101150055297 SET1 gene Proteins 0.000 description 7
- 101150117538 Set2 gene Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000005684 electric field Effects 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003098 cholesteric effect Effects 0.000 description 1
- 235000012000 cholesterol Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
A bistable display and a driving method of a panel thereof are provided. The bistable display comprises a bistable display panel and a driving device. The driving device is coupled to the bistable display panel and is used for driving the bistable display panel by using a first group of driving voltage values when the bistable display is in a non-shutdown process, and driving the bistable display panel by using a second group of driving voltage values when the bistable display is in a shutdown process. Wherein the first set of driving voltage values is different from the second set of driving voltage values. The invention can effectively avoid the dilemma that the driving chip of the bistable display panel is possibly damaged due to the application of a specific alternating current swing waveform, and can ensure that the white charged particles in each micro-cup are more closely and more stably accumulated after the bistable display is turned off, thereby ensuring that the whiteness or blackness of the picture displayed by the bistable display after the bistable display is turned on again is maintained without color cast.
Description
Technical field
The present invention relates to a kind of flat panel display technology, and in particular to the driving method of a kind of bistable display and panel thereof.
Background technology
Bistable display (bistable display) a kind ofly uses bistable media to carry out the display shown, and the technology will reaching bistable display includes electric ink (electronic ink, E-Ink) show, cholesterol liquid crystal display (cholesteric liquid crystal display, ChLCD), electrophoresis showed (electro-phoretic display, EPD), the moistening display of electricity (electrowetting display, EWD) Liquid powder display (quick response-liquid powder display or is fast responded, the display technique such as QR-LPD).And day by day universal along with portable type electronic product, adopts the flexible display (as Electronic Paper (e-paper), e-book (e-book) etc.) of bistable display technologies also little by little to receive the concern in market.
Generally speaking, Electronic Paper and e-book adopt electrophoresis showed (EPD) technology to reach the object showing image.For the e-book of black and white, its each pixel is mainly formed in different micro-cups (micro-cups) by the black electrophore tic liquid doped with white charged particles (particle) and forms, and move to drive white charged particles by executing alive mode, thus cause each pixel to be shown the grey of black, white or different contrast respectively.
And existing e-book is the direction of an electric field that formed by applied voltage and promote the time length of white charged particles to carry out the conversion of pixel gray level.When the picture shown by e-book is stable, and time under the state being in shutdown, the picture of e-book shown by after next time starting shooting can maintain picture shown when it shuts down, but black electrophore tic liquid and white charged particles have Brownian movement in structure based, the coefficient of viscosity reduces, gravity ... etc. problem, whiteness (if during e-book shutdown, shown picture is white picture) or blackness (if during e-book shutdown, shown picture is black picture) stable state of this picture that e-book will be caused shown after again starting shooting reduce (because the white charged particles in each micro-cup can be more open with instability aheap when e-book is shut down), and then cause the picture of display white and black distinctly be partial to light gray and Dark grey, that is colour cast.
And in order to such problem will be solved, conventional art can apply a kind of specific interchange trochoidal wave form (specific AC shaking waveform) to the pixel electrode (pixel electrode) of each pixel and (can seem before the shutdown process of e-book, the data-signal being associated with each pixel is form of communication), so as to allow the white charged particles in each micro-cup aheap more closely with more stablize.Thus, the whiteness of the picture that e-book is shown after again starting shooting or blackness stable state are just maintained, thus the phenomenon of colour cast can not be had to produce.
Although the specific interchange trochoidal wave form applied before the shutdown process of e-book can promote e-book in shutdown before finally show stablize the stability of picture, but due to common voltage (the common voltage that applied specific interchange trochoidal wave form may cause the common electrode of each pixel (common electrode) to receive, Vcom) change, and then make the low voltage level of the common voltage of form of communication (VcomL, that is negative polarity common voltage) likely can close voltage (V lower than the minimum grid in order to close each pixel
gL).Thus, this will cause abnormal electric current to flow to extremely in order to drive the driving chip (driver IC) of electrophoretic display panel in e-book, thus causes driving chip likely to be damaged.
Summary of the invention
In order to overcome the defect of prior art, the invention provides a kind of bistable display, it comprises: bi-stable display panels and drive unit.Drive unit couples bi-stable display panels, be used under bistable display is in non-shutdown process, utilize first group of driving voltage value to drive bi-stable display panels, and under bistable display is in shutdown process, utilize second group of driving voltage value to drive bi-stable display panels.Wherein, first group of driving voltage value is different from second group of driving voltage value.
The present invention separately provides a kind of driving method being suitable for the bi-stable display panels driven in bistable display, and it comprises: under bistable display is in non-shutdown process, utilizes first group of driving voltage value to drive bi-stable display panels; And under bistable display is in shutdown process, utilize second group of driving voltage value to drive bi-stable display panels.Wherein, first group of driving voltage value is different from second group of driving voltage value.
In one embodiment of the invention, first group of driving voltage value at least comprises the first positive polarity data voltage, the first negative polarity data voltage, the first positive polarity common voltage and the first negative polarity common voltage; And second group of driving voltage value at least comprises the second positive polarity data voltage, the second negative polarity data voltage, the second positive polarity common voltage and the second negative polarity common voltage.
In one embodiment of the invention, the second positive polarity data voltage is less than the first positive polarity data voltage; Second negative polarity data voltage is greater than the first negative polarity data voltage; Second positive polarity common voltage is less than the first positive polarity common voltage; And the second negative polarity common voltage is greater than the first negative polarity common voltage.
In one embodiment of the invention, the pressure reduction between the first positive polarity data voltage and the first negative polarity data voltage is greater than the pressure reduction between the second positive polarity data voltage and the second negative polarity data voltage; And the pressure reduction between the first positive polarity common voltage and the first negative polarity common voltage is greater than the pressure reduction between the second positive polarity common voltage and the second negative polarity common voltage.
In one embodiment of the invention, bi-stable display panels at least comprises micro-cup type electrophoretic display panel.
Based on above-mentioned, the present invention is mainly under bistable display is in non-shutdown process (being such as in normal running), the positive-negative polarity data voltage with larger pressure reduction and the positive-negative polarity common voltage with larger pressure reduction is utilized to produce to drive the drive waveforms of bi-stable display panels, and under bistable display is in shutdown process, utilize the positive-negative polarity data voltage that has compared with small pressure difference with the positive-negative polarity common voltage had compared with small pressure difference to produce the aforementioned specific trochoidal wave form that exchanges to drive bi-stable display panels.Thus, even if apply the pixel electrode of aforesaid specific interchange trochoidal wave form to each pixel before the shutdown process of bistable display, the low voltage level of the common voltage of form of communication (that is negative polarity common voltage) also can not be allowed to close voltage (V lower than the minimum grid in order to close each pixel
gL).Whereby, not only can effectively avoid because of apply specific interchange trochoidal wave form cause the driving chip of bi-stable display panels likely to damage awkward situation, but also can allow the white charged particles in each micro-cup after bistable display shutdown aheap more closely with more stablize, thus allow the whiteness of bistable display picture shown after again starting shooting or blackness stable state be maintained and the phenomenon of colour cast can not be had.
It is to be understood that above-mentioned general description and following embodiment are only exemplary and illustrative, its can not limit the present invention for advocate scope.
Accompanying drawing explanation
Appended accompanying drawing is below a part for instructions of the present invention, shows example embodiment of the present invention, and appended accompanying drawing illustrates principle of the present invention together with the description of instructions.
Figure 1A is depicted as the schematic diagram of the bistable display (bistable display) 10 of one embodiment of the invention.
Figure 1B is depicted as the structural representation of the bi-stable display panels 101 of one embodiment of the invention.
Fig. 2 is depicted as the driving schematic diagram of the bistable display 10 of one embodiment of the invention.
Fig. 3 is depicted as the driving method process flow diagram being suitable for the bi-stable display panels driven in bistable display of one embodiment of the invention.
Further, the description of reference numerals in above-mentioned accompanying drawing is as follows:
10: bistable display
101: bi-stable display panels
103: drive unit
105: time schedule controller
107: driving voltage generator
109: driving chip
111: plastic substrate
113: transparency conducting layer
115: micro-glass array
117: encapsulated layer
119: bonding coat
121: conductive backings
V
sET1: first group of driving voltage value
V
sET2: second group of driving voltage value
V
gH: the highest grid cut-in voltage
V
gL: minimum grid close voltage
V
dP1: the first positive polarity data voltage
V
dN1: the first negative polarity data voltage
V
comH1: the first positive polarity common voltage
V
comL1: the first negative polarity common voltage
V
dP2: the second positive polarity data voltage
V
dN2: the second negative polarity data voltage
V
comH2: the second positive polarity common voltage
V
comL2: the second negative polarity common voltage
T: time
Δ V1 ~ Δ V4: pressure reduction
S301, S303: each step of driving method process flow diagram being suitable for the bi-stable display panels driven in bistable display of one embodiment of the invention
Embodiment
With detailed reference to one exemplary embodiment of the present invention, the example of described one exemplary embodiment is described in the accompanying drawings.In addition, all possibility parts, use the element/component of same reference numerals to represent identical or similar portions in drawings and the embodiments.
Figure 1A is depicted as the schematic diagram of the bistable display (bistable display) 10 of one embodiment of the invention.Please refer to Figure 1A, bistable display 10 comprises bi-stable display panels (bistable display panel) 101 and drive unit (driving device) 103.In the present embodiment, bi-stable display panels 101 includes multi-strip scanning line (scan line, not shown), a plurality of data lines (data line, not shown), and multiple pixel (pixel, not shown).Wherein, data line is substantially vertical with sweep trace is arranged; And all pixels arrange in a matrix fashion, and it distinctly can be electrically connected with corresponding data line and sweep trace.
It is worth mentioning that in this, the bi-stable display panels 101 of the present embodiment can be micro-cup type electrophoretic display panel, but be not restricted to this, it also can be the bi-stable display panels of other types, such as: electronic ink display panel, Electrowetting display panel, fast response Liquid powder display panel or cholesteric liquid LCD panel.If bi-stable display panels 101 is micro-cup type electrophoretic display panel, then each pixel can be formed in different micro-cups by the black electrophore tic liquid doped with white charged particles and form.
Clearer, Figure 1B is depicted as the structural representation of the bi-stable display panels 101 of one embodiment of the invention.Please refer to Figure 1B, bi-stable display panels 101 shown in Figure 1B is a micro-cup type electrophoretic display panel, and it can include plastic substrate (PET plastic) 111, transparency conducting layer (transparent conductor, such as ITO) 113, micro-glass of array (micro-cup array) 115, encapsulated layer (sealing layer) 117, bonding coat (adhesive layer) 119, and conductive backings (pattered conductor) 121.Wherein, micro-glass of array 115 is configured between transparency conducting layer 111 and conductive backings 121, and has multiple (such as white) charged particle in each micro-cup of micro-glass of array 115 and be full of (such as black) electrophoresis disclosing solution.In addition, plastic substrate 111 is configured on transparency conducting layer 113; Encapsulated layer 117 is configured between micro-glass of array 115 and conductive backings 121; Bonding coat 119 is then configured between encapsulated layer 117 and conductive backings 121.
Substantially, the white particles forming positive negative electric field to drive such as positively charged to conductive backings 121 and transparency conducting layer 113 by power supply moves, so as to forming the pattern that eyes are seen.For Figure 1B, the negative electric field that the right conductive backings 121 produces and the positive electric field white charged particles can ordered about in micro-cup that the right transparency conducting layer 113 produces move to conductive backings 121 end, and therefore human eye can see black; And the negative electric field white charged particles can ordered about in micro-cup that the positive electric field that left side conductive backings 121 produces and left side transparency conducting layer 113 produce moves to transparency conducting layer 113 end, therefore human eye sees white.When the power is stopped, the white charged particles in micro-cup can maintain position instantly because of physical characteristics, until when powering once again, these white charged particles just can be driven once again, and Here it is so-called " bistable state " characteristic.
In addition, drive unit 103 couples bi-stable display panels 101, be used to bistable display 10 be in non-shutdown process (non-shutdown procedure) and (be such as in normal running (normal operation), but be not restricted to this) under, utilize first group of driving voltage value V
sET1drive bi-stable display panels 101, and be in shutdown process (shutdown procedure) (when such as user enters default battery saving mode for closedown bistable display 10 or display in bistable display 10, then bistable display 10 can enter shutdown process immediately, otherwise, then bistable display 10 can be in non-shutdown process) under, utilize second group of driving voltage value V
sET2drive bi-stable display panels 101.Wherein, first group of driving voltage value V
sET1be different from second group of driving voltage value V
sET2, describe in detail again after appearance.
Clearer, drive unit 103 comprises time schedule controller (timing controller, 105 T-con), driving voltage generator (driving voltage generator) 107, and driving chip (driver IC) 109.Wherein, driving voltage generator 107 couples time schedule controller 105, in order to produce first group of driving voltage value (a first set of driving voltage values) V
sET1with second group of driving voltage value (a second set of driving voltage values) V
sET2.And driving voltage generator 107 with under being in normal running in bistable display 10, exports first group of driving voltage value V by the control of time schedule controller 105
sET1, and under bistable display 10 is in shutdown process, export second group of driving voltage value V
sET2.Even, driving voltage generator 107 also by the control of time schedule controller 105 with under being in normal running in bistable display 10, can export the highest grid cut-in voltage V in order to pixel each in activation bi-stable display panels 101
gHand the minimum grid closedown voltage V exported in order to close each pixel in stable state display panel 101
gL.
In the present embodiment, first group of driving voltage value V that driving voltage generator 107 produces
sET1comprise the first positive polarity data voltage (positive data voltage) V
dP1, the first negative polarity data voltage (negative data voltage) V
dN1, the first positive polarity common voltage (positive common voltage) V
comH1with the first negative polarity common voltage (negative common voltage) V
comL1; In addition, second group of driving voltage value V producing of driving voltage generator 107
sET2comprise the second positive polarity data voltage V
dP2, the second negative polarity data voltage V
dN2, the second positive polarity common voltage V
comH2with the second negative polarity common voltage V
comL2.Wherein, the second positive polarity data voltage V
dP2be less than the first positive polarity data voltage V
dP1; Second negative polarity data voltage V
dN2be greater than the first negative polarity data voltage V
dN1; Second positive polarity common voltage V
comH2be less than the first positive polarity common voltage V
comH1; And the second negative polarity common voltage V
comL2be greater than the first negative polarity common voltage V
comL1.And, first and second positive polarity data voltage V
dP1with V
dP2and first and second negative polarity data voltage V
dN1with V
dN2such as can be applied to the conductive backings 121 of Figure 1B; In addition, first and second positive polarity common voltage V
comH1with V
comH2and first and second negative polarity common voltage V
comL1with V
comL2such as can be applied to the transparency conducting layer 113 of Figure 1B.
In other words, the first positive polarity data voltage V
dP1with the first negative polarity data voltage V
dN1between pressure reduction (voltage difference) be greater than the second positive polarity data voltage V
dP2with the second negative polarity data voltage V
dN2between pressure reduction, and the first positive polarity common voltage V
comH1with the first negative polarity common voltage V
comL1between pressure reduction be greater than the second positive polarity common voltage V
comH2with the second negative polarity common voltage V
comL2between pressure reduction.Can seem, first group of driving voltage value V
sET1be different from second group of driving voltage value V
sET2.Change a mode, second group of driving voltage value V
sET2absolute value can be less than first group of driving voltage value V
sET1.For example, the second positive polarity data voltage V
dP2absolute value be less than the first positive polarity data voltage V
dP1; Second negative polarity data voltage V
dN2absolute value be less than the first negative polarity data voltage V
dN1; Second positive polarity common voltage V
comH2absolute value be less than the first positive polarity common voltage V
comH1; And the second negative polarity common voltage V
comL2absolute value be less than the first negative polarity common voltage V
comL1.
On the other hand, driving chip 109 couples bi-stable display panels 101, time schedule controller 105 and driving voltage generator 107.In the present embodiment, driving chip 109 with under being in normal running in bistable display 10, receives the first group of driving voltage value V coming from driving voltage generator 107 and export by the control of time schedule controller 105
sET1, the highest grid cut-in voltage V
gHand minimum grid close voltage V
gLto drive bi-stable display panels 101, and under bistable display 10 is in shutdown process, receive the second group of driving voltage value V coming from driving voltage generator 107 and export
sET2to drive bi-stable display panels 101.
Can seem, driving chip 109 is an integrated driving chip (integrated driver IC) with grid drive chip (gate driver IC), source driver chip (source driver IC) and common electrode drive chip (common electrode driver IC).Wherein, driving chip 109 is in order to react on the control of time schedule controller 105 and the highest grid cut-in voltage V that exports according to driving voltage generator 107
gHand minimum grid close voltage V
gLsequentially export sweep signal (scan signal), so as to opening every one-row pixels in bi-stable display panels 101 (that is: effect of grid drive chip) one by one.In addition, driving chip 109 can also react on the control of time schedule controller 105 and first group of driving voltage value V exporting according to driving voltage generator 107
sET1(under bistable display 10 is in normal running) or second group of driving voltage value V
sET2(under bistable display 10 is in shutdown process) produces many data-signals (data signal) and common voltage (common voltage, Vcom), so as to driving the row pixel (that is: effect of source driving chip and common electrode driving chip) of having opened.
It is worth mentioning that in this, aforementioned driving voltage generator 107 such as can be made up of two groups other driving circuits, or the (not shown) that driving circuit is formed that Dan Youyi group adjustable exports, provides so as to reacting on the control of time schedule controller 105 and produces first group of driving voltage value V
sET1with second group of driving voltage value V
sET2.
Based on above-mentioned, the part that Fig. 2 is depicted as the bistable display 10 of one embodiment of the invention drives schematic diagram.Please merge with reference to Fig. 1 and Fig. 2, if before time t, under bistable display 10 is in normal running.Under this condition of base, time schedule controller 105 can by the mode of tabling look-up to obtain the activation bit (driving information) in order to drive each pixel in bi-stable display panels 101.Thus, time schedule controller 105 just can produce to control driving voltage generator 107 and export first group of driving voltage value V according to obtained activation bit
sET1, the highest grid cut-in voltage V
gHand minimum grid close voltage V
gLto driving chip 109, and control driving chip 109 according to first group of driving voltage value V
sET1, the highest grid cut-in voltage V
gHand minimum grid close voltage V
gLproduce the drive waveforms (driving waveform) driving bi-stable display panels 101, and the drive waveforms produced can include sweep signal, data-signal and common voltage.
On the other hand, if after time t, under bistable display 10 is in shutdown process.Under this condition of base, time schedule controller 105 equally can by the mode of tabling look-up to obtain the activation bit in order to drive each pixel in bi-stable display panels 101.Thus, time schedule controller 105 just can produce to control driving voltage generator 107 and export second group of driving voltage value V according to obtained activation bit
sET2to driving chip 109, and control driving chip 109 according to second group of driving voltage value V
sET2produce specific interchange trochoidal wave form (the shaking waveform driving bi-stable display panels 101, as Fig. 2 dotted ellipse place), and the specific interchange trochoidal wave form produced can include data-signal and common voltage, and its frequency is considered driving circuit hardware specification and driven effect, be about 50 hertz or be more than 50 hertz.
In this, can clearly be seen that from Fig. 2, under bistable display 10 is in normal running, drive unit 103 can utilize the positive-negative polarity common voltage { V with larger pressure differential deltap V1 (higher value subtracts smaller value)
comH1, V
comL1, there is the positive-negative polarity data voltage { V of larger pressure differential deltap V2 (higher value subtracts smaller value)
dP1, V
dN1, the highest grid cut-in voltage V
gH, and minimum grid close voltage V
gLproduce the drive waveforms driving bi-stable display panels 101.Thus, the picture that namely bi-stable display panels 101 can show this and have is watched to user.On the other hand, under bistable display 10 is in shutdown process, drive unit 103 can utilize the positive-negative polarity common voltage { V with comparatively small pressure difference Δ V3 (higher value subtracts smaller value)
comH2, V
comL2with there is the positive-negative polarity data voltage { V of comparatively small pressure difference Δ V4 (higher value subtracts smaller value)
dP2, V
dN2produce the specific interchange trochoidal wave form driving bi-stable display panels 101.Under this drives, the final and stable picture that bi-stable display panels 101 namely can be shown during its shutdown of display after bistable display 10 is started shooting again.
And, owing to applying specific interchange trochoidal wave form to the pixel electrode of each pixel before the shutdown process of bistable display 10, so as to allow the white charged particles in each micro-cup aheap more closely with more stablize.Thus, the whiteness of the picture that bistable display 10 is shown after again starting shooting or blackness stable state are just maintained, thus the phenomenon of colour cast can not be had to produce.
Moreover, because drive unit 103 can utilize the positive-negative polarity common voltage { V had compared with small pressure difference Δ V3 under bistable display 10 is in shutdown process
comH2, V
comL2with there is positive-negative polarity data voltage { V compared with small pressure difference Δ V4
dP2, V
dN2produce the specific interchange trochoidal wave form driving bi-stable display panels 101.Therefore, even if apply specific interchange trochoidal wave form to the pixel electrode of each pixel before the shutdown process of bistable display 10, low voltage level (that is the negative polarity common voltage V of common voltage of form of communication also can not be allowed
comL2) close voltage V lower than the minimum grid in order to close each pixel
gL.Whereby, can effectively avoid causing abnormal current direction driving chip 103 because applying specific interchange trochoidal wave form, so that the awkward situation that the driving chip 103 of bi-stable display panels 101 is likely damaged.
Based on above-described embodiment disclose/the content of teaching, Fig. 3 is depicted as the driving method process flow diagram being suitable for the bi-stable display panels driven in bistable display of one embodiment of the invention.Please refer to Fig. 3, the driving method of the present embodiment comprises: be in non-shutdown process in bistable display and (be such as in normal running, but be not restricted to this) under, utilize first group of driving voltage value to drive bi-stable display panels (step S301); And under bistable display is in shutdown process, utilize the second group of driving voltage value being different from first group of driving voltage value to drive bi-stable display panels (step S303).
Similarly, first group of driving voltage value at least comprises the first positive polarity data voltage, the first negative polarity data voltage, the first positive polarity common voltage and the first negative polarity common voltage; And second group of driving voltage value at least comprises the second positive polarity data voltage, the second negative polarity data voltage, the second positive polarity common voltage and the second negative polarity common voltage.Wherein, the second positive polarity data voltage is less than the first positive polarity data voltage; Second negative polarity data voltage is greater than the first negative polarity data voltage; Second positive polarity common voltage is less than the first positive polarity common voltage; And the second negative polarity common voltage is greater than the first negative polarity common voltage.Change speech to refer to, the pressure reduction between the first positive polarity data voltage and the first negative polarity data voltage is greater than the pressure reduction between the second positive polarity data voltage and the second negative polarity data voltage; And the pressure reduction between the first positive polarity common voltage and the first negative polarity common voltage is greater than the pressure reduction between the second positive polarity common voltage and the second negative polarity common voltage.Base this, to produce the specific interchange trochoidal wave form that has compared with small pressure difference to drive bi-stable display panels in step S303 according to second group of driving voltage value, thus allow the white charged particles in each micro-cup of bi-stable display panels aheap more closely with more stablize, wherein said specific its frequency of interchange trochoidal wave form is considered driving circuit hardware specification and is driven effect, is about more than 50 hertz or 50 hertz.
In sum, the present invention is mainly under bistable display is in normal running, the positive-negative polarity data voltage with larger pressure reduction and the positive-negative polarity common voltage with larger pressure reduction is utilized to produce to drive the drive waveforms of bi-stable display panels, and under bistable display is in shutdown process, utilize the positive-negative polarity data voltage that has compared with small pressure difference with the positive-negative polarity common voltage had compared with small pressure difference to produce the described specific trochoidal wave form that exchanges to drive bi-stable display panels.Thus, even if apply described specific interchange trochoidal wave form to the pixel electrode of each pixel before the shutdown process of bistable display, low voltage level (that is the negative polarity common voltage (V of common voltage of form of communication also can not be allowed
comL2)) close voltage (V lower than the minimum grid in order to close each pixel
gL).Whereby, not only can effectively avoid because of apply specific interchange trochoidal wave form cause the driving chip of bi-stable display panels likely to damage awkward situation, but also can allow the white charged particles in each micro-cup pile up after bistable display shutdown more closely with more stablize, thus allow the whiteness of bistable display picture shown after again starting shooting or blackness stable state be maintained and the phenomenon of colour cast can not be had.In addition, any design, manufacture or with the different driving voltage group of similar employing with the means driven bi-stable display panels, all belong to the present invention for protection category.
Although the present invention with embodiment openly as above; so itself and be not used to limit the present invention, those of ordinary skill in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore the scope that protection scope of the present invention ought define depending on the claim of enclosing is as the criterion.In addition, any embodiment of the present invention or claim must not reach whole object disclosed in this invention or advantage or feature.In addition, summary part and title are only used to the use of auxiliary patent document search, are not used for limiting claim of the present invention.
Claims (15)
1. a bistable display, comprising:
One bi-stable display panels; And
One drive unit, couple this bi-stable display panels, be used under this bistable display is in non-shutdown process, utilize one first group of driving voltage value to drive this bi-stable display panels, and under this bistable display is in shutdown process, utilize one second group of driving voltage value to drive this bi-stable display panels;
Wherein, this first group of driving voltage value is different from this second group of driving voltage value;
Wherein this first group of driving voltage value at least comprises one first positive polarity data voltage, one first negative polarity data voltage, one first positive polarity common voltage and one first negative polarity common voltage; And this second group of driving group magnitude of voltage at least comprises one second positive polarity data voltage, one second negative polarity data voltage, one second positive polarity common voltage and one second negative polarity common voltage.
2. bistable display as claimed in claim 1, wherein the absolute value of this second positive polarity data voltage is less than the absolute value of this first positive polarity data voltage, the absolute value of this second negative polarity data voltage is less than the absolute value of this first negative polarity data voltage, the absolute value of this second positive polarity common voltage is less than the absolute value of this first positive polarity common voltage, and the absolute value of this second negative polarity common voltage is less than the absolute value of this first negative polarity common voltage.
3. bistable display as claimed in claim 1, wherein this drive unit comprises:
Time schedule controller;
One driving voltage generator, couple this time schedule controller, in order to produce this first group of driving voltage value and this second group of driving voltage value, wherein this driving voltage generator by the control of this time schedule controller with under being in non-shutdown process in this bistable display, export this first group of driving voltage value, and under this bistable display is in shutdown process, export this second group of driving voltage value; And
One driving chip, couple this bi-stable display panels, this time schedule controller and this driving voltage generator, wherein this driving chip by the control of this time schedule controller with under being in non-shutdown process in this bistable display, receive and come from this first group of driving voltage value that this driving voltage generator exports to drive this bi-stable display panels, and under this bistable display is in shutdown process, receives and come from this second group of driving voltage value that this driving voltage generator exports to drive this bi-stable display panels.
4. bistable display as claimed in claim 1, wherein this second positive polarity data voltage is less than this first positive polarity data voltage; This second negative polarity data voltage is greater than this first negative polarity data voltage; This second positive polarity common voltage is less than this first positive polarity common voltage; And this second negative polarity common voltage is greater than this first negative polarity common voltage.
5. bistable display as claimed in claim 1, the pressure reduction wherein between this first positive polarity data voltage and this first negative polarity data voltage is greater than the pressure reduction between this second positive polarity data voltage and this second negative polarity data voltage; And the pressure reduction between this first positive polarity common voltage and this first negative polarity common voltage is greater than the pressure reduction between this second positive polarity common voltage and this second negative polarity common voltage.
6. bistable display as claimed in claim 1, wherein this bi-stable display panels is micro-cup type electrophoretic display panel.
7. bistable display as claimed in claim 6, wherein this micro-cup type electrophoretic display panel comprises:
One transparency conducting layer;
One conductive backings; And
One micro-glass of array, is configured between this transparency conducting layer and this conductive backings, and has multiple charged particle and electrophoresis disclosing solution in each micro-cup of this micro-glass of array,
Wherein, this first with this second positive polarity data voltage and this first with this second negative polarity data voltage be applied to this conductive backings; And
This first with this second positive polarity common voltage and this first with this second negative polarity common voltage be applied to this transparency conducting layer.
8. bistable display as claimed in claim 7, wherein this micro-cup type electrophoretic display panel also comprises:
One plastic substrate, is configured on this transparency conducting layer;
One encapsulated layer, is configured between this micro-glass of array and this conductive backings; And
One bonding coat, is configured between this encapsulated layer and this conductive backings.
9. bistable display as claimed in claim 7, wherein this second positive polarity data voltage is less than this first positive polarity data voltage; This second negative polarity data voltage is greater than this first negative polarity data voltage; This second positive polarity common voltage is less than this first positive polarity common voltage; And this second negative polarity common voltage is greater than this first negative polarity common voltage.
10. bistable display as claimed in claim 7, wherein this driving chip produces a specific interchange trochoidal wave form to drive this bi-stable display panels under this bistable display is in shutdown process, and wherein the frequency of this specific interchange trochoidal wave form is more than or equal to 50 hertz.
11. 1 kinds of driving methods, can be used for the bi-stable display panels in driving one bistable display, and this driving method comprise:
Under this bistable display is in non-shutdown process, utilize one first group of driving voltage value to drive this bi-stable display panels; And
Under this bistable display is in shutdown process, utilize one second group of driving voltage value to drive this bi-stable display panels,
Wherein, this first group of driving voltage value is different from this second group of driving voltage value;
Wherein this first group of driving voltage value at least comprises one first positive polarity data voltage, one first negative polarity data voltage, one first positive polarity common voltage and one first negative polarity common voltage; And this second group of driving voltage value at least comprises one second positive polarity data voltage, one second negative polarity data voltage, one second positive polarity common voltage and one second negative polarity common voltage.
12. driving methods as claimed in claim 11, wherein the absolute value of this second positive polarity data voltage is less than the absolute value of this first positive polarity data voltage, the absolute value of this second negative polarity data voltage is less than the absolute value of this first negative polarity data voltage, the absolute value of this second positive polarity common voltage is less than the absolute value of this first positive polarity common voltage, and the absolute value of this second negative polarity common voltage is less than the absolute value of this first negative polarity common voltage.
13. driving methods as claimed in claim 11, wherein this second positive polarity data voltage is less than this first positive polarity data voltage; This second negative polarity data voltage is greater than this first negative polarity data voltage; This second positive polarity common voltage is less than this first positive polarity common voltage; And this second negative polarity common voltage is greater than this first negative polarity common voltage.
14. driving methods as claimed in claim 13, wherein utilize this second group of driving voltage value also to comprise to drive the step of this bi-stable display panels:
Produce a specific interchange trochoidal wave form to drive this bi-stable display panels, wherein the frequency of this specific interchange trochoidal wave form is more than or equal to 50 hertz.
15. driving methods as claimed in claim 11, the pressure reduction wherein between this first positive polarity data voltage and this first negative polarity data voltage is greater than the pressure reduction between this second positive polarity data voltage and this second negative polarity data voltage; And the pressure reduction between this first positive polarity common voltage and this first negative polarity common voltage is greater than the pressure reduction between this second positive polarity common voltage and this second negative polarity common voltage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100115931A TWI436330B (en) | 2011-05-06 | 2011-05-06 | Bistable display and method of driving panel thereof |
| TW100115931 | 2011-05-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102243410A CN102243410A (en) | 2011-11-16 |
| CN102243410B true CN102243410B (en) | 2014-12-31 |
Family
ID=44961548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110186695.3A Expired - Fee Related CN102243410B (en) | 2011-05-06 | 2011-06-28 | Bistable display and driving method of panel thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102243410B (en) |
| TW (1) | TWI436330B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI437533B (en) * | 2011-10-25 | 2014-05-11 | Au Optronics Corp | Driving method of bistable display panel |
| TWI469121B (en) * | 2012-11-07 | 2015-01-11 | Au Optronics Corp | Method of operating electrophoretic display |
| CN103870223B (en) * | 2012-12-11 | 2017-09-01 | 联想(北京)有限公司 | The method and electronic equipment of information processing |
| CN103969907B (en) | 2013-02-05 | 2017-07-14 | 辉达公司 | Display panel and the Flat electronic equipment with it |
| CN103309115B (en) * | 2013-05-30 | 2016-03-23 | 京东方科技集团股份有限公司 | Color electrophoresis display panel and manufacture method, display device |
| TWI514363B (en) * | 2014-03-27 | 2015-12-21 | Au Optronics Corp | Pixel structure |
| CN104795028A (en) * | 2015-04-16 | 2015-07-22 | 华南师范大学 | Electro-wetting multi-grey-scale display drive method |
| CN111161686A (en) * | 2018-11-08 | 2020-05-15 | 南京瀚宇彩欣科技有限责任公司 | Electronic system and driving method thereof |
| CN113985676A (en) * | 2021-11-04 | 2022-01-28 | Tcl华星光电技术有限公司 | Electrophoresis display panel, manufacturing method and electronic device |
| CN116364022A (en) * | 2023-03-31 | 2023-06-30 | 广东志慧芯屏科技有限公司 | Electronic paper display screen driving method and system and electronic equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206838A (en) * | 2006-12-23 | 2008-06-25 | Lg.菲利浦Lcd株式会社 | Electrophoretic display and driving method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006133332A (en) * | 2004-11-02 | 2006-05-25 | Canon Inc | Particle moving type display apparatus |
| KR101341059B1 (en) * | 2007-08-14 | 2013-12-13 | 삼성디스플레이 주식회사 | Electrophoretic display device and driving method thereof |
| JP5071000B2 (en) * | 2007-08-31 | 2012-11-14 | セイコーエプソン株式会社 | Electrophoretic display device driving method, electrophoretic display device, and electronic apparatus |
-
2011
- 2011-05-06 TW TW100115931A patent/TWI436330B/en not_active IP Right Cessation
- 2011-06-28 CN CN201110186695.3A patent/CN102243410B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206838A (en) * | 2006-12-23 | 2008-06-25 | Lg.菲利浦Lcd株式会社 | Electrophoretic display and driving method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201246154A (en) | 2012-11-16 |
| CN102243410A (en) | 2011-11-16 |
| TWI436330B (en) | 2014-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102243410B (en) | Bistable display and driving method of panel thereof | |
| CN101493627B (en) | Electrophoretic display device, method of driving the same, and electronic apparatus | |
| KR101363136B1 (en) | Liquid crystal display | |
| US10901288B2 (en) | Display device and driving method | |
| US20090289878A1 (en) | Liquid crystal display device and driving method thereof | |
| CN1265336C (en) | Image display device and display drive method | |
| CN100426058C (en) | Liquid crystal display | |
| CN102867491A (en) | LCD (Liquid Crystal Display) panel drive circuit and method as well as display unit | |
| CN101840666A (en) | The driving method of electrophoretic display apparatus, electronic equipment and electrophoretic display panel | |
| CN101840123A (en) | The driving method of electrophoretic display apparatus, electronic equipment and electrophoretic display panel | |
| CN106128408A (en) | The drive circuit of a kind of display panels and display panels | |
| US20130009931A1 (en) | Electrophoresis display device and driving method | |
| CN102270431A (en) | Bistable display and driving method of panel thereof | |
| CN104375346A (en) | Liquid crystal display panel and driving method thereof | |
| CN104795028A (en) | Electro-wetting multi-grey-scale display drive method | |
| CN102214443B (en) | Electrophoretic display and driving method thereof | |
| CN102598108A (en) | Pixel circuit and display device | |
| CN106652932A (en) | Liquid crystal display and driving method thereof | |
| CN100433117C (en) | Liquid crystal display device and method of driving same | |
| CN101676782B (en) | TFT-LCD drive circuit | |
| CN104867473A (en) | Driving method, driving device and display device | |
| CN104424903B (en) | Voltage calibration circuit and liquid crystal display device thereof | |
| CN202167218U (en) | Liquid crystal display module with MIPI interface | |
| CN106098006B (en) | A kind of data driven unit and method of liquid crystal display panel | |
| KR101523632B1 (en) | Driving circuit unit for electrophoresis display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20200628 |