CN203414710U - Passive driving electrophoresis type electronic paper device - Google Patents
Passive driving electrophoresis type electronic paper device Download PDFInfo
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- CN203414710U CN203414710U CN201320548561.6U CN201320548561U CN203414710U CN 203414710 U CN203414710 U CN 203414710U CN 201320548561 U CN201320548561 U CN 201320548561U CN 203414710 U CN203414710 U CN 203414710U
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Abstract
The utility model discloses a passive driving electrophoresis type electronic paper device. The passive driving electrophoresis type electronic paper device comprises a display medium layer, and an upper base plate and a lower base plate which are arranged relatively, wherein a first electrode is formed on the upper surface of the lower base plate; the first electrode comprises a public lead wire electrode, a display lead wire electrode and a display electrode; a public electrode is formed on the lower surface of the upper base plate; the public electrode is electrically connected with the public lead wire electrode by a transferring electrode; an insulating layer covers the display lead wire electrode; second electrodes are formed on the upper surfaces of the display electrode and the insulating layer; the display lead wire electrode is electrically connected with the display electrode; the display electrode is electrically connected with the second electrodes; the display medium layer is contained among the public electrode and the second electrodes; the display medium layer is electrically connected with the public electrode and the second electrodes. According to the passive driving electrophoresis type electronic paper device, low-power-consumption and high-contrast display can be realized and the influences on display content by the display lead wire electrode of the first electrode are avoided.
Description
Technical field
The utility model relates to display device of electronic paper, is specially a kind of passive drive electrophoretype electric paper apparatus.
Background technology
Owing to thering is the remain unchanged feature of not power consumption while not refreshing of only power consumption when refreshing the page, displaying contents, therefore in display frame content update application frequently not, compare with common display, by the design of drive pattern, Electronic Paper has the feature low in energy consumption that shows; Backlight owing to not needing, only utilize surround lighting can obtain clearly and show, this is the Another reason that low-power consumption shows, simultaneously due to backlight default, the textural anomaly that another apparent advantage is Electronic Paper is simple, easily makes flexible, thin thickness and lightweight display device.Just because of display device of electronic paper has so many advantage, can be widely used in mobile phone, e-book, computer, in the electronic products such as personal digital assistant, as economize on electricity display screen, use, the liquid crystal device of traditional passive drive, charactron, electronic type billboard, smart card, electronic shelf label and electric label are all the following applications that continues expansion of electric paper display, because electric paper display is the display device with storage property, there is significant otherness with other class display that needs external energy to maintain demonstration, as passive luminous, do not glimmer, under physical environment, contrast is good, show and change not fixed image frequently, and these pictures clearly, pass to low power people and there is advantage, therefore Electronic Paper is to substitute paper, energy-conserving and environment-protective, one of solution of the most desirable demonstration cheaply.
Electrophoretic display apparatus shows the process of information, is via back plate electrode and public electrode, electric signal to be added on electrophoresis showed film, and under positive electric field and negative electric field effect, particle can move to different directions, forms black, white or colored show state.When signal being input on back plate electrode and public electrode, between back plate electrode and public electrode, form different potential difference (PD), drive thus the particle in electrophoresis showed rete to move, can show various information needed.According to the difference of input pattern signal, the mode that is mainly divided into active driving and passive drive, the mode of active driving wherein, form active device array, by gate electrode, control the switch of the signal electrode signal condition of each pixel, and then be used for showing that diversified figure, the most frequently used active device are thin film transistor (TFT) (TFT) arrays; The mode of passive drive can only display segment code category information, and displaying contents is relatively fixing and be subject to the restriction of non-display area area, shows that quantity of information is fewer; Active type of drive and passive drive mode respectively have relative merits, and active type of drive shows that containing much information, can realize image shows, but cost is high, power consumption is large; Passive drive mode cost is low, power consumption is relatively little but can only show the segment encodes such as numeral and character.In addition, the display area of single pixel is also variant, and related content describes in detail after below to other summary of the invention analysis again;
Patented claim about the electrophoretic display apparatus of active driving has a lot, as Chinese patent CN101276122 provides leakage current between a kind of inhibition pixel, improves active driving electrophoresis type display device and the electronic equipment of Electronic Paper reliability; Chinese patent CN101770129N discloses a kind of electrophoretype electronic paper display device, the electric power consumption that it is suitable for avoiding sensing mistake and reduces active driving; Chinese patent CN102654705A provides a kind of electrophoretic display device (EPD) assembly and manufacture method thereof, can reduce the generation of light leakage current, strengthens display effect; Chinese patent CN202057938U discloses the structure of the display device of electronic paper that a kind of electrophoretic layer stock utilization is high, reduces the cost of electrophoretype Electronic Paper by saving expensive electrophoretic film material; Jap.P. JP2003084314A, JP2004325489A and US Patent No. 2007268245A1 improve respectively active driving circuit and reduce scanning times, increase voltage retention, increase contrast and reflectivity that the aperture opening ratio of storing property, improving active device improves electrophoretype Electronic Paper; Above-mentioned display device of electronic paper is that shape and a layer structure for source electrode, gate electrode, insulation course and the show electrode of TFT reaches the object of improving device display effect by change active device.In the innovation and creation of numerous active driving electrophoretype Electronic Paper, be limited to the switching characteristic of the thin-film device of thin film transistor (TFT) (TFT) self, ON state and off-state current cannot be taken into account simultaneously, and ON state current is larger, and off-state current is also larger.If keep the size constancy of thin film transistor (TFT) (TFT), naked eyes cannot be differentiated, do not affect the display effect of single pixel, being difficult to provides enough electric currents to single pixel; If while using such maintenance thin film transistor (TFT) (TFT) to drive larger single pixel, in the time of need to increasing ON state current, off-state current increases thereupon, cause display effect to decline; And when active drive, be generally the character that shows a number square millimeter or tens of square millimeters, need a large amount of points to combine realization, cause the rising that drives cost, therefore active driving cannot substitute the display device of electronic paper of passive drive completely in many application scenarios.
Just because of this, passive drive electrophoretype Electronic Paper still receives publicity in recent years, Chinese patent CN102819160A, Taiwan patent TW201250358A and US Patent No. 2012314275A1 are passive matrix substrates, there is an electrode surface, this electrode surface has a plurality of electrodes, the conductive layer that also has pattern part, has a preset shape, and is disposed between electronic ink layer and the electrode surface of this passive matrix substrate, by a front cover, viewing area for overlay electronic ink layer, and have a predetermined pattern and a default word at least one of them, and in this front cover, part corresponding to this shown preset shape of electronic ink layer is hollow out, although the hollow out sealing coat that this display device covers can solve the driving problems of the more Chinese character of stroke, but the existence because of sealing coat, bring surround lighting is formed to the negative effect of blocking, make the Efficiency Decreasing of electrophoretic layer surface reflection, cause contrast to decline, simultaneously, another problem that these innovation and creation bring is exactly that background layer cannot change along with the time, limited the application that gray scale shows, TURP changes the variation of background, display comparison degree significantly declines, this has limited many application, Chinese patent CN102566190A is by being arranged at electrophoresis showed medium layer between upper substrate and infrabasal plate, surface near electrophoresis showed medium layer on infrabasal plate is provided with a plurality of column electrodes that are parallel to each other, surface near electrophoresis showed medium layer on upper substrate is provided with a plurality of row electrodes that are parallel to each other, make column electrode and row electrode mutually orthogonal, the overlapping region of column electrode and row electrode is divided into a plurality of pixel cells by electric paper apparatus, these innovation and creation are the problem of electrophoretype Electronic Paper maximum, when the material drive threshold voltage of electrophoretype Electronic Paper and the ratio of voltage are greater than 1.5 when above, display comparison degree obviously declines, background presents medium tone, there is not obvious threshold value in many electrophoretype Electronic Paper materials itself, Chinese patent CN202351593U by having indium tin oxide transparent line layer on glass substrate, on this line layer, there is insulating film layer, on insulating film layer, there are pixel and background electrode layer, the pixel of pixel and background electrode layer is a segment type structure, on vertical interface, between described indium tin oxide transparent line layer and pixel and background electrode layer, need the relevant position parallel link conducting, Chinese patent CN202351593U has similar structure with the aforementioned active driving of mentioning in pixel, pixel electrode, insulation course, lead-in wire electrode and via hole (or parallel link), it is exactly owing to increasing power consumption that this parallel link brings a serious problem, causes contrast to decline, under identical drive condition, the contrast of Chinese patent CN102654705A is not as the structure of Chinese patent CN102819160A, Taiwan patent TW201250358A and US Patent No. 2012314275A1.In passive electrophoretic type Electronic Paper Driving technique, the two sides that utilizes PCB back plate electrode, FPC back plate electrode or similar PET back plate electrode that the different pattern of electrode is distributed in to substrate can obtain reasonable display effect.Although the technology comparative maturity of printed-wiring board (PWB) exists problems to need to solve in electrophoretype Electronic Paper shows, the one, accurate printed-wiring board (PWB) cost is high, and wiring board precision is difficult to meet the requirement that Chinese character shows cheaply; The 2nd, due to the restriction of via hole precision, background electrode shows that being difficult to realization meets high-fineness pattern and complex background design; The 3rd, connected mode is restricted, be not suitable for the type of drive such as COG and COF, and COG type of drive is one of connected mode that cost is minimum, atomization degree is the highest, and COF is flexible connected mode.
In sum, compare with active driving displaying scheme, passive drive electrophoretype Electronic Paper is more suitable for the demonstration that single pixel is large, but the high-fineness pattern of passive drive mode, low-power consumption, high-contrast, connected mode innovation and creation technical scheme is not flexibly suggested always, active driving electrophoretype Electronic Paper cannot be used for reference and various displaying contents can be realized, also cannot there is high-fineness pattern by combining the innovation and creation manufacture of the electrophoretype Electronic Paper of existing passive drive or active driving, low-power consumption, high-contrast, connected mode is passive drive electrophoretype Electronic Paper flexibly, in advertisement, the field such as direction board and smart card, in the urgent need to high-fineness pattern, high-contrast, low-power consumption, passive drive electric paper display cheaply.
Summary of the invention
The utility model is for the proposition of above problem, and develops a kind of passive drive electrophoretype electric paper apparatus.
Technological means of the present utility model is as follows:
An electrophoretype electric paper apparatus, comprising: display dielectric layer and the upper substrate and the infrabasal plate that are oppositely arranged; Described infrabasal plate upper surface forms the first electrode; Described the first electrode comprises common lead electrode, shows lead-in wire electrode and show electrode; Described upper substrate lower surface forms public electrode; Described public electrode is electrically connected to common lead electrode by transfer printing electrode; On described demonstration lead-in wire electrode, be coated with insulation course; Above described show electrode and insulation course, form the second electrode; Described demonstration lead-in wire electrode is electrically connected to described show electrode; Described show electrode is electrically connected to described the second electrode; Described display dielectric layer is placed between public electrode and the second electrode, and this display dielectric layer is electrically connected to public electrode and the second electrode, between this public electrode and the second electrode, has an electric potential difference, and this electric potential difference is enough to drive the demonstration of display dielectric layer; Described the second electrode is connected with display dielectric layer by glue-line;
Further, also comprise fluid sealant frame, described fluid sealant frame is positioned at the marginal position of upper substrate and infrabasal plate, forms enclosed construction with upper substrate and infrabasal plate;
Further, described infrabasal plate is plastic film substrate, glass substrate, metal substrate or papery substrate; Described upper substrate is transparent plastic substrate;
Further, described the first electrode adopts photoetching process to make, and its material is ITO material, metal material or organic conductive material;
Further, described the first electrode is for printing electrode;
Further, also comprise by COG, COB, COF or pin mode and common lead electrode and the driving chip that shows that lead-in wire electrode is connected;
Further, described insulation course is by the described demonstration lead-in wire of the totally-enclosed parcel of inverted U structure electrode, and this insulation course adopts typography or photoetching process repeatedly to form;
Further, described the first electrode and the second electrode are comprised of one or more electrode layer stacks;
Further, the thickness sum of described show electrode and the second electrode is more than or equal to and shows lead-in wire electrode, insulation course and the second electrode thickness sum of overlapping portion successively from the bottom to top;
Further, by improving [(R
1 & 2+ Rc) * C
3]/[(R
1+ Rc) * C
2] ratio reduce power consumption and improve contrast; R wherein
1be resistance, the R of the first electrode
1 & 2be the resistance in series of the first electrode and the second electrode, resistance in series, the C that Rc is public electrode and common lead electrode
2electric capacity, C for public electrode
3be the electric capacity of the second electrode and public electrode.
Owing to having adopted technique scheme, a kind of passive drive electrophoretype electric paper apparatus that the utility model provides, by the electrode composite structure of the included demonstration lead-in wire electrode of the first electrode and insulation course and the formation of the second electrode, and the electrode composite structure of show electrode, the second electrode and public electrode formation, can realize low-power consumption and high-contrast shows, avoid the impact of the included demonstration lead-in wire electrode pair displaying contents of the first electrode, reduced significantly the capacitance-resistance value of display pixel; Show that lead-in wire electrode is insulated layer and effectively covers, make the structure of display pattern simpler, contact resistance is little, and the display pattern of whole Electronic Paper can be meticulousr, and processing technology and equipment precision are low; In addition, the utility model is applied widely, electrode material is selected extensively, process equipment is simple, production run energy consumption is low, manufacture method environmental protection, type of drive are selected flexibly, the utility model is simple in structure, be not only convenient to produce, and cost is very cheap is suitable for extensive popularization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, infrabasal plate, 3, insulation course, the 4, second electrode, 5, glue-line, 6, display dielectric layer, 7, public electrode, 8, upper substrate, 9, transfer printing electrode, 10, fluid sealant frame, 20, common lead electrode, 21, show lead-in wire electrode, 22, show electrode.
Embodiment
A kind of passive drive electrophoretype electric paper apparatus as shown in Figure 1, comprising: display dielectric layer 6 and the upper substrate 8 and the infrabasal plate 1 that are oppositely arranged; Described infrabasal plate 1 upper surface forms the first electrode; Described the first electrode comprises common lead electrode 20, shows lead-in wire electrode 21 and show electrode 22; Described upper substrate 8 lower surfaces form public electrode 7; Described public electrode 7 is electrically connected to common lead electrode 20 by transfer printing electrode 9; On described demonstration lead-in wire electrode 21, be coated with insulation course 3; Above described show electrode 22 and insulation course 3, form the second electrode 4; Described demonstration lead-in wire electrode 21 is electrically connected to described show electrode 22; Described show electrode 22 is electrically connected to described the second electrode 4; Described display dielectric layer 6 is placed between public electrode 7 and the second electrode 4, this display dielectric layer 6 is electrically connected to public electrode 7 and the second electrode 4, between this public electrode 7 and the second electrode 4, have an electric potential difference, this electric potential difference is enough to drive the demonstration of display dielectric layer 6; Described the second electrode 4 is connected with display dielectric layer 6 by glue-line 5; Further, also comprise fluid sealant frame 10, described fluid sealant frame 10 is positioned at the marginal position of upper substrate 8 and infrabasal plate 1, forms enclosed construction with upper substrate 8 and infrabasal plate 1; Further, described infrabasal plate 1 is plastic film substrate, glass substrate, metal substrate or papery substrate; Described upper substrate 8 is transparent plastic substrate; Further, described the first electrode adopts photoetching process to make, and its material is ITO material, metal material or organic conductive material; Further, described the first electrode is for printing electrode; Further, also comprise by COG, COB, COF or pin mode and common lead electrode 20 and the driving chip that shows that lead-in wire electrode 21 is connected; Further, described insulation course 3 is by the described demonstration lead-in wire of the totally-enclosed parcel of inverted U structure electrode 21, and this insulation course 3 adopts typography or photoetching process repeatedly to form; Further, described the first electrode and the second electrode 4 are comprised of one or more electrode layer stacks; Further, the thickness sum of described show electrode 22 and the second electrode 4 is more than or equal to and shows lead-in wire electrode 21, insulation course 3 and the second electrode 4 thickness sum of overlapping portion successively from the bottom to top; Further, by improving [(R
1 & 2+ Rc) * C
3]/[(R
1+ Rc) * C
2] ratio reduce power consumption and improve contrast; R wherein
1be resistance, the R of the first electrode
1 & 2resistance in series, the Rc that is the first electrode and the second electrode 4 is resistance in series, the C of public electrode 7 and common lead electrode 20
2electric capacity, C for public electrode 7
3be the electric capacity of the second electrode 4 and public electrode 7.
Infrabasal plate described in the utility model is plastic film substrate, glass substrate, metal substrate or papery substrate, infrabasal plate does not have transparent requirement, different types of substrate properties, can produce the low-cost electrophoretype Electronic Paper that adapts to various working environments and displaying contents, the good bending property of plastic film substrate; The packaging cost of glass substrate is low; In addition, also can use the metal substrate with insulation course, the advantage of metal substrate is that intensity is high, and the cost of papery substrate is minimum; Described upper substrate is transparent plastic substrate, in order to there is better environmental suitability, upper substrate is the further transparent membrane of cover glass substrate or other kind also, but is increasing electrophoretype Electronic Paper to the adaptability of environment simultaneously, and the problem of bringing is that the thickness of display device increases.
The first electrode described in the utility model can adopt photoetching process to make, and its material is ITO material, metal material or organic conductive material; Described the first electrode can also be for printing electrode; Can select according to the requirement of substrate kind and connected mode that material category and the processing mode of the first electrode, photoetching technique have that precision is high, live width and linear slit reach even nanometer scale of micron; The first electrode that printing forms, selects best mode of printing also can reach micron dimension; If driving the type of chip is that COG connects, select glass substrate, use the first electrode that material is metal material, the optional mode of printing of processing mode or photolithographicallpatterned, if use the first electrode that material is ITO material, need to use photolithographicallpatterned processing, although there is the ITO material of mode of printing, now also immature; If driving the type of chip is that COF connects, need to select plastic film substrate, use metal electrode, processing mode is printing or photolithographicallpatterned; The connected mode of other metal pins, zebra paper and zebra bar, is used various printable low precision electrodes both can meet the demands, and the common feature of these modes is to drive chip on circuit system; Described the first electrode can also be for printing electrode, and as silver electrode, carbon, Graphene, carbon nano-tube and PEDOT electrode, according to the requirement that shows particular content, printing technology can select screen printing mode maybe can realize high-precision intaglio plate or ink jet printing mode; Compare with screen printing technique, the pattern precision of letterpress technology, intaglio printing technology and ink-jet technology is all higher, can reach micron number magnitude.
The utility model also comprises by COG, COB, COF or pin mode and common lead electrode and the driving chip that shows that lead-in wire electrode is connected; Due to the difference of environment for use and the performance that requires, select different back plate electrodes to make display device, when particularly requiring whole driver element physical dimension smaller, COG and COF are one of preferential modes of selecting; The cost of COF is very high, and normally the 3-5 of COG is doubly even higher; COG is the optimal selection of lower cost solution.The processing mode of electrophoretype film, it is the non-patterning of public electrode, therefore the COG mode of conventional active driving is difficult to realize with the passive COG type of drive that is similar to liquid crystal, apply passive drive electrophoretype Electronic Paper structure of the present utility model, can realize diversified driving connected mode.
Insulation course described in the utility model is by the described demonstration lead-in wire of the totally-enclosed parcel of inverted U structure electrode, and this insulation course adopts typography or photoetching process repeatedly to form; The generation type of insulation course is a lot, and mode of printing has advantages of the material of saving, and the thickness of insulating layer scope that mode of printing forms is wider, from tens nanometer, to several millimeters, can realize; Equipment investment is simultaneously few, compares cheap for manufacturing cost with photolithographicallpatterned.The sharpest edges of photoetching technique are high-precision patterns, but the thickness of insulating layer forming is restricted, along with the increase of thickness, and pattern precise decreasing, the time shutter increases, decrease in efficiency, cost up.Insulation course is all being used in a lot of fields with in innovation and creation, but insulation course setting of the present utility model can change the distribution mode of electrode and then change the distribution of various stray capacitances, has realized the passive drive electrophoretype electric paper apparatus of excellent performance.Show that lead-in wire electrode, insulation course, the second electrode and public electrode form complicated layer structure, multi-layered electrode and the public electrode of the first electrode and the second electrode also form important layer structure simultaneously, the performance optimization screening of these two layer structures is that the technical scheme of other innovation and creation is not available, is the key factor that realizes high-contrast, low-power consumption; Described the second electrode can improve the longitudinal distributing homogeneity of show electrode, reduces the capacitance-resistance effect of display unit simultaneously.
The first electrode described in the utility model and the second electrode are comprised of one or more electrode layer stacks; The first electrode can adopt identical material also can adopt different materials from the second electrode; The thickness sum of described show electrode and the second electrode is more than or equal to and shows lead-in wire electrode, insulation course and the second electrode thickness sum of overlapping portion successively from the bottom to top; Plastic packaging pressure energy forms the close contact of electrophoretic layer and electrode, there is good contrast, and surface uniform, display device is attractive in appearance, if show lead-in wire electrode, insulation course and the second electrode from the bottom to top successively the thickness sum of overlapping portion higher than the thickness sum of show electrode and the second electrode, too much can cause loose contact, contrast decline.
The utility model display dielectric layer can be microcapsules, the electrophoresis showed medium of micro-glass, can be also the display dielectric layer of other type; Here display dielectric layer, except electrophoresis microcapsule and micro-cup, is equally also applicable to the demonstration medium layer that other can use back plate electrode, as SSCT or PDLC liquid crystal layer, electrochromic layer and electric wetting layer etc.
The utility model is by improving [(R
1 & 2+ Rc) * C
3]/[(R
1+ Rc) * C
2] ratio reduce power consumption and improve contrast; R wherein
1be resistance, the R of the first electrode
1 & 2be the resistance in series of the first electrode and the second electrode, resistance in series, the C that Rc is public electrode and common lead electrode
2for showing electric capacity, the C forming between lead-in wire electrode and public electrode
3be the electric capacity forming between the second electrode and public electrode; Insulation course of the present utility model, the first electrode and the second electrode are not simple stack, need to analyze design parameter and just can have better effect.Particularly the first electrode and the second electrode all comprise background electrode part, make the cabling layout of the whole display section complex that becomes.The resistance of supposing the first electrode is R
1(not containing and the second electrode lap), the resistance in series of the first electrode and the second electrode is R
1 & 2, the resistance in series of public electrode and common lead electrode is Rc, these parameters are all content-defined to single display.The electric capacity that shows lead-in wire electrode and the second electrode is C
1, the electric capacity of public electrode is C
2, the electric capacity of the second electrode and public electrode is C
3, the definition of these electric capacity can be same displaying contents, can be also different displaying contents, shows that lead-in wire electrode may be to form electric capacity or form electric capacity with the demonstration lead-in wire electrode of other displaying contents with corresponding displaying contents.The first electrode and the second electrode are overlapping or partly overlap in viewing area and background parts, are Ohmic contact, and electric capacity is negligible.In display device, along with the increasing of displaying contents, the demonstration of the first electrode lead-in wire electrode and the second electrode have lap, and this part electric capacity, by improving the thickness of insulation course, can obtain significant reduction, effective more than the specific inductive capacity that improves insulation course.Different displaying contents, the size of insulation resistance can not guarantee the demonstration of low-power consumption and high-contrast.When the thickness of insulation course is enough thick, because C
1much smaller than C
2, for the convenient C that only considers is discussed
2impact.In electric paper apparatus design process of the present utility model, find thickness effect driving voltage and the display comparison degree of insulation course.A thin insulation course is easily realized the thickness matching of the second electrode and insulation course, but significantly increases the power consumption of drive IC, and Electronic Paper advantage low in energy consumption is exhausted, and simultaneous contrast also declines.When thickness of insulating layer increases, the thickness of the second electrode must increase thereupon, otherwise contrast can obviously decline.By designing the sandwich construction of the first electrode and the second electrode, substep forms the first electrode, the second electrode, and the thicker insulation course of setting is covered in the demonstration lead-in wire electrode part of the first electrode, the back plate electrode that forms new passive drive type display device of electronic paper together with public electrode, has solved problems of the prior art effectively.According to the result of our repetition test, at C
1under negligible condition, [(R
1 & 2+ Rc) * C
3]/[(R
1+ Rc) * C
2] ratio larger, the contrast of electric paper apparatus is better, power consumption is also lower, otherwise contrast is poorer, power consumption also sharply rises, when power consumption and contrast cannot meet the demands, by improving this ratio, reducing power consumption, improving contrast is a direction.
A kind of passive drive electrophoretype electric paper apparatus that the utility model provides, has applied widely, electrode material and selects advantage widely, and the manufacturing technology of use is mainly printing or photoetching technique, and production line is simple, low to environmental requirement.Daily label, electronic shelf label and a pen section class show, only need printing equipment can complete electrode manufacture, and process equipment is simple, production run energy consumption is low, to compare with the manufacture method of the back plate electrode of existing PCB, FPC be environmental protection.The passive drive electrophoretype electric paper apparatus that the electrode composite structure that insulation course, the first electrode and the second electrode form and display dielectric layer form, has structural design flexibly, and applicable different final assemblies needs, compare with active driving electrophoretype electronic paper technology, there is volume of transmitted data little, unit pixel display area is large, the feature of material cost and low cost of manufacture, there is type of drive simultaneously and select advantage flexibly, by the first electrode, the structure of the second electrode and insulation course, avoided the impact of the included demonstration lead-in wire electrode pair displaying contents of the first electrode, simultaneously owing to there is no the restriction of thin film transistor (TFT) driving force, the utility model is compared with existing active Driving technique, can realize the English alphabet that single elemental area is large, the low-cost technologies that Chinese character and digital displaying contents and displaying contents are full of whole display screen, compare with via hole or the parallel link technology of electrode-insulation course-electrode in existing passive Driving technique, use the show electrode of the first electrode and the electrode structure that the second electrode multiple-layer stacked forms, abandon the electrode of insulation course, the significant capacitance-resistance value that reduces display pixel is that resistance and electric capacity are long-pending, the passive drive electrophoretype electric paper apparatus of this structure, both can use a part of lithographic equipment, the printing equipment of existing glass substrate black and white, TN, STN production line to produce, also production technology manufacture that can application roll pair roller, simple in structure, with low cost.When using glass substrate to form the first electrode and the second electrode, can realize the connection type of drive of COG or FOG; While utilizing roll-to-roll production technology manufacture to use film substrate to do the first electrode and the second electrode, can realize the connection type of drive of COF or FOF, and can driving circuit and control circuit are processed into one-piece type; Compare with the display device of electronic paper that utilizes PCB, FPC to do back plate electrode, owing to not needing to utilize the metals such as copper, process for making is used mode of printing, the environmental protection characteristic of more outstanding Electronic Paper; Adopt multi-layer electrode structure not need via hole and insulation course, show that lead-in wire electrode is insulated layer and effectively covers, make the structure of display pattern simpler, contact resistance is little, and the display pattern of whole Electronic Paper can be meticulousr, and processing technology and equipment precision are low; In addition, in passive drive electrophoretype electric paper apparatus, the problem that must consider is exactly background switching problem.Just because of this, electrophoretype Electronic Paper can realize the demonstration of positive contrast and negative contrast.In processing and manufacturing process, current material technical merit is stressed and the impact of static, the change to a certain degree of show state unavoidably occurs or change completely.After display device manufacture completes, must refresh, so just can obtain higher contrast.Under the identical condition of electrophoretype show media material, the utility model is compared with existing passive Driving technique, can either realize over against degree and showing, also can show that picture " B " and " electricity " this class have the word of closing structure or the complex background of letter; Compare with existing cross-layer or via hole interconnection technique, because viewing area only needs multi-layered electrode, can realize low-power consumption and high-contrast and show; Compare with the mode of pierced pattern, the background display comparison degree that TURP changes is high, and this is the technology of being badly in need of in undersized electrophoretype electric paper apparatus, is also one of the beneficial effect that can realize of the utility model.
Passive drive electrophoretype electric paper apparatus described in the utility model can infrabasal plate adopts the glass substrate of Asahi Glass 0.1mm thickness; The glass substrate of Asahi Glass can be crooked, blocks water good every moisture performance, and glass substrate packaging cost is low, is easy to the film forming of various electrodes; The first electrode can adopt ITO electrode, comprising background electrode; The processing technology of ITO electrode is very ripe, and performance is very stable, and it is high that photoetching technique has precision, and live width and linear slit can reach nanometer scale; The type that drives chip is that COG connects, and chip model is SSD1623, and COG connects and can effectively mate with client, is easy to large-scale batch production; Insulation course can adopt screen printing mode processing, materials'use Elect-1166, and 120 ℃ for the treatment of temperatures, thickness is processed into 25 microns of left and right; The generation type of insulation course has a lot, and screen printing mode has advantages of the material of saving, and the thickness range of mode of printing is wider simultaneously, from tens nanometer, to several millimeters, can realize; Meanwhile, equipment investment is few, compares cheap for manufacturing cost with photolithographicallpatterned; The second electrode comprises that background electrode can be used conductive carbon paste, adopts screen printing mode, and show electrode thickness is 26 microns of left and right, and background electrode is 1 micron of left and right; Transfer printing electrode can be used conductive carbon paste, and thickness can be 30 microns of left and right; Display dielectric layer can be used E-ink Electrophoretic display medium; Public electrode can adopt transparent ito thin film; Upper substrate adopts pet substrate.
Passive drive electrophoretype electric paper apparatus described in the utility model can adopt the standard Kapton that thickness is 0.05mm by infrabasal plate; Kapton has good thermotolerance, can be applicable to severe cold, radiation resistance, water tolerance, acid resistance, resistance to solvent and resistance to fluorine Lyons characteristic of-60 ℃; The first electrode comprises that background electrode can adopt Nano silver grain ink (SEINTRONICS INK), this ink has ink jet printing circuit is formed to necessary good dispersiveness and electric conductivity, because not condensing and stopping up the electrode that the feature such as few can form high density and high conductivity; The type that drives chip is that COF connects, and chip model is SSD1623 or functionally similar chip; COF connects and can effectively mate with client, is easy to large-scale batch production; Insulation course can adopt screen printing mode processing, and material can be used Elect-1166,120 ℃ for the treatment of temperatures, and thickness is 25 microns of left and right; The second electrode comprises that background electrode can be used conductive carbon paste, utilizes screen printing mode, 26 microns of left and right of show electrode thickness, and background electrode is 1 micron of left and right; Transfer printing electrode can be used conductive carbon paste, and thickness is 30 microns of left and right; Display dielectric layer can be used E-ink Electrophoretic display medium; Public electrode adopts transparent ito thin film; Upper substrate adopts pet substrate.
Passive drive electrophoretype electric paper apparatus described in the utility model can infrabasal plate adopts the glass substrate of Asahi Glass 0.1mm thickness; The first electrode comprises that background electrode can adopt ito thin film electrode; The type that drives chip is that COG connects, and chip model is SSD1623; Insulation course can adopt photolithographicallpatterned processing, and coating method is used rod to be coated with, and material can be used domestic auspicious red RZJ304 positive photoresist, 120 ℃ for the treatment of temperatures, and it is 25 microns of left and right that time is carved imaging processing thickness; The second electrode comprises that background electrode is used poly-3,4-ethylenedioxy thiophene: poly styrene sulfonate, (PEDOT:PSS, Poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate)), use litho pattern mode to process, material can use macromolecule company of SHIN-ETSU HANTOTAI can photoetching PEDOT:PSS, model is SEPLEGYDA OC-U, 26 microns of left and right of show electrode thickness, background electrode is 1 micron of left and right; For reaching required thickness, can adopt the repeatedly mode of optics alignment, or the low precision material that a part of use can serigraphy, a part is used SEPLEGYDA OC-U, reduces to reach the material cost of desired thickness; Transfer printing electrode can be used conductive carbon paste, and thickness is 30 microns of left and right; Display dielectric layer can be used E-ink Electrophoretic display medium; Public electrode adopts transparent ito thin film; Upper substrate adopts pet substrate.
Passive drive electrophoretype electric paper apparatus described in the utility model can adopt the pet substrate of 0.18mm thickness by infrabasal plate, and can make transparent back plate electrode; The first electrode comprises that background electrode adopts ito thin film electrode; Drive part is directly installed in client, with the connected mode that adopts metal pins, zebra paper or zebra bar that is connected driving; Insulation course adopts screen printing mode processing, and material can be used transparent optic-solidified adhesive, uses the UV-irradiation of 365nm, and thickness of insulating layer is 25 microns of left and right; The second electrode comprises that background electrode is used transparent poly-3,4-ethylenedioxy thiophene: poly styrene sulfonate, (PEDOT:PSS, Poly(2,3-dihydrothieno-1,4-dioxin)-poly(styrenesulfonate)), the processing of employing screen printing mode, the printed PEDOT:PSS of macromolecule company of materials'use SHIN-ETSU HANTOTAI, model is SEPLEGYDA OC-SC, 26 microns of left and right of show electrode thickness, background electrode is 1 micron of left and right; Transfer printing electrode can be used conductive carbon paste, and thickness is 30 microns of left and right; Display dielectric layer can be used E-ink Electrophoretic display medium; Public electrode adopts transparent ito thin film; Upper substrate adopts pet substrate; The passive drive electrophoretype electric paper apparatus that this mode is made, can be from two sides, front and back display patterns all, can be for showing symmetrical pattern, just the performance of the black and white of two kinds of patterns is contrary image.
In practical application, having more combination can enumerate out; the material of insulation course or the change of electrode material; and first electrode, the second electrode or insulation course are used same material; or the complex superposition of multilayer material; the overlay area of background electrode and transfer printing electrode and the selection of resettlement area, within being all covered by protection domain of the present utility model.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; according to the technical solution of the utility model and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection domain of the present utility model.
Claims (10)
1. a passive drive electrophoretype electric paper apparatus, is characterized in that comprising: display dielectric layer (6) and the upper substrate (8) being oppositely arranged and infrabasal plate (1); Described infrabasal plate (1) upper surface forms the first electrode; Described the first electrode comprises common lead electrode (20), shows lead-in wire electrode (21) and show electrode (22); Described upper substrate (8) lower surface forms public electrode (7); Described public electrode (7) is electrically connected to common lead electrode (20) by transfer printing electrode (9); On described demonstration lead-in wire electrode (21), be coated with insulation course (3); Above described show electrode (22) and insulation course (3), form the second electrode (4); Described demonstration lead-in wire electrode (21) is electrically connected to described show electrode (22); Described show electrode (22) is electrically connected to described the second electrode (4); Described display dielectric layer (6) is placed between public electrode (7) and the second electrode (4), this display dielectric layer (6) is electrically connected to public electrode (7) and the second electrode (4), between this public electrode (7) and the second electrode (4), have an electric potential difference, this electric potential difference is enough to drive the demonstration of display dielectric layer (6); Described the second electrode (4) is connected with display dielectric layer (6) by glue-line (5).
2. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, characterized by further comprising fluid sealant frame (10), described fluid sealant frame (10) is positioned at the marginal position of upper substrate (8) and infrabasal plate (1), forms enclosed construction with upper substrate (8) and infrabasal plate (1).
3. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, is characterized in that described infrabasal plate (1) is for plastic film substrate, glass substrate, metal substrate or papery substrate; Described upper substrate (8) is transparent plastic substrate.
4. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, is characterized in that described the first electrode adopts photoetching process to make, and its material is ITO material, metal material or organic conductive material.
5. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, is characterized in that described the first electrode is for printing electrode.
6. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, characterized by further comprising by COG, COB, COF or pin mode and common lead electrode (20) and the driving chip that shows that lead-in wire electrode (21) is connected.
7. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, it is characterized in that described insulation course (3) is by the described demonstration lead-in wire of the totally-enclosed parcel of inverted U structure electrode (21), this insulation course (3) adopts typography or photoetching process repeatedly to form.
8. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, is characterized in that described the first electrode and the second electrode (4) are comprised of one or more electrode layer stacks.
9. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, the thickness sum that it is characterized in that described show electrode (22) and the second electrode (4) is more than or equal to and shows lead-in wire electrode (21), insulation course (3) and the second electrode (4) the thickness sum of overlapping portion successively from the bottom to top.
10. a kind of passive drive electrophoretype electric paper apparatus according to claim 1, is characterized in that by improving [(R
1 & 2+ Rc) * C
3]/[(R
1+ Rc) * C
2] ratio reduce power consumption and improve contrast; R wherein
1be resistance, the R of the first electrode
1 & 2resistance in series, the Rc that is the first electrode and the second electrode (4) is resistance in series, the C of public electrode (7) and common lead electrode (20)
2electric capacity, C for public electrode (7)
3be the electric capacity of the second electrode (4) and public electrode (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548561.6U CN203414710U (en) | 2013-09-03 | 2013-09-03 | Passive driving electrophoresis type electronic paper device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548561.6U CN203414710U (en) | 2013-09-03 | 2013-09-03 | Passive driving electrophoresis type electronic paper device |
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| CN203414710U true CN203414710U (en) | 2014-01-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424950A (en) * | 2013-09-03 | 2013-12-04 | 大连东方科脉电子有限公司 | Passive driving electrophoretype electronic paper device |
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2013
- 2013-09-03 CN CN201320548561.6U patent/CN203414710U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424950A (en) * | 2013-09-03 | 2013-12-04 | 大连东方科脉电子有限公司 | Passive driving electrophoretype electronic paper device |
| CN103424950B (en) * | 2013-09-03 | 2016-03-23 | 大连东方科脉电子有限公司 | A kind of passive drive electrophoretype electric paper apparatus |
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