CN103823323A - Packaging structure of multi-component cholesteryl liquid crystal electronic paper and manufacturing method thereof - Google Patents
Packaging structure of multi-component cholesteryl liquid crystal electronic paper and manufacturing method thereof Download PDFInfo
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- CN103823323A CN103823323A CN201410108750.0A CN201410108750A CN103823323A CN 103823323 A CN103823323 A CN 103823323A CN 201410108750 A CN201410108750 A CN 201410108750A CN 103823323 A CN103823323 A CN 103823323A
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Abstract
The invention discloses a packaging structure of multi-component cholesteryl liquid crystal electronic paper and a manufacturing method of the packaging structure of the multi-component cholesteryl liquid crystal electronic paper. The packaging structure comprises a first substrate, a second substrate, a first electrode layer, a first orientation film, a second electrode layer, a second orientation film, a seal frame located between the first substrate and the second substrate, multiple spacing walls, first seals, second seals, liquid crystal and a light absorption layer. The seal frame is used for combining the first substrate and the second substrate together at a preset interval to form a closed space together. The spacing walls are distributed in the closed space in parallel and used for dividing the closed space into multiple independent areas, and each spacing wall is used for dividing one independent area into a first area and a second area which are isolated from each other. The first seals and the second seals are arranged on the seal frame and used for injecting the liquid crystal into the first areas and the second areas respectively. The liquid crystal is sealed in the first areas and the second areas. The configuration of different colors in different display areas can be achieved, the structure is simple, cost is saved, and the requirement for electronic paper colorization can be met better.
Description
Technical field
The present invention relates to a kind of cholesteric liquid crystal electronic paper, be specially a kind of encapsulating structure and manufacture method thereof of polycomponent cholesteric liquid crystal electronic paper.
Background technology
Along with the develop rapidly of network technology, the maturation of wearable device, the application of Electronic Paper display technique with storage characteristics is more and more extensive.The condition that substitutes traditional advertisement, price tag, bulletin board by Electronic Paper reaches its maturity, and is applicable to the low-power consumption requirement of wearing equipment, and along with the decline of Electronic Paper cost and the lifting of performance, permeates traditional liquid crystal display applications field increasing year by year.At present, black and white terminal as e-book is practical, but not rapid expansion as e-book of advertisement, price tag and bulletin board, trace it to its cause, being that the colorize of Electronic Paper is with high costs limits it and applies widely, no matter is rhythmo structure, or the single layer structure of RGB three primary colours, due to complicated structure and technological process, cause color electric paper cost performance very poor, cannot compete with traditional paper.Therefore, seek the color electric paper of high performance-price ratio as display terminal, UNE technology is the problem that prior art is needed solution badly always.
Jap.P. JP2005148480A discloses a kind of color cholesteric liquid crystal display, is made up of, to solve the problem of mutually polluting between the bad and liquid crystal material of Liquid crystal pour three kinds of cholesteryl liquid crystal display structures; Because the pixel showing is very little, this patent very easily causes closure part to stop up in reality is implemented, and yield is extremely low, and the perfusion separately of some kind liquid crystal, and efficiency is very low, and cost is very high.Patent JPWO2006/100713A1 discloses a kind of interval structure of single liquid crystal, mainly solve the flowability problem of liquid crystal, by three stacked add realize full color show, this patent simply arranges cross structure and prevents the mobility of liquid crystal in the surrounding of pixel, reach and prevent from showing the object changing, but the cost of three-decker is higher.Prevent from showing that the patent changing also has JP WO2007/007394A1 and JP WO2008/023416A1, with respect to the above-mentioned patent JP WO2006/100713A1 mentioning, take more complicated next door structure, change Liquid crystal pour path and reach the stable object showing.In addition, Jap.P. JP2000267120A discloses three kinds of methods that liquid crystal injects respectively, because of a kind of Liquid crystal pour flow through distance long and narrow cannot practical application.Above-mentioned patent or due to complex structure, or too high because of technology difficulty, and the actual cost of manufacturing is all very high, does not all obtain application widely in Electronic Paper field.
Attach most importance to the application that substitutes traditional paper in the staple market of Electronic Paper, as printed matter, fixed area is to the variation demand of color few, just very responsive to cost, existing electronic paper technology, because each reason noted earlier is difficult to produce coloured prod cheaply.In addition, the large and reliability of the manufacture difficulty in next door is not high is also major reason wherein; The viscosity in next door and homogeneity control difficulty are large, applicable material category rareness, and existing material easily produces out-of-shape and poor sealing, and the serious problems of the mutual seepage of variety classes liquid crystal.In addition, when cholesteric liquid crystal electronic paper does not use alignment films, easily there is short problem of displaying contents retention time; If use alignment films, this rete can increase the weight of the problem of non-uniform of imperfect bonding and the thickness in next door.According to current material technology level, manufacture has even thickness and the strong next door of viscosity is very difficult, the particularly sealing of three tiny areas, and next door size is much smaller than the size of liquid crystal pixel, prior art can not realize the production of high yield, and therefore cost cannot reduce.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop encapsulating structure and the manufacture method thereof of the polycomponent cholesteric liquid crystal electronic paper of a kind of low cost, high reliability, simple in structure, function admirable.
Technological means of the present invention is as follows:
An encapsulating structure for polycomponent cholesteric liquid crystal electronic paper, comprising:
The first substrate being oppositely arranged and second substrate;
Be formed at the first electrode layer of first substrate lower surface;
Be arranged on first substrate and cover the first alignment films of the first electrode layer;
Be formed at the second electrode lay of second substrate upper surface;
Be arranged on second substrate and cover the second alignment films of the second electrode lay;
Sealing frame between first substrate and second substrate, sealing frame combines first substrate and second substrate with predetermined space, jointly forms enclosure space;
Be distributed in side by side in described enclosure space, described enclosure space be separated into multiple spaced walls of multiple isolated areas; Described in each, spaced walls is separated into an isolated area first area and the second area that are isolated from each other;
Be arranged in sealing frame, be respectively used to the first sealing and second sealing of first area and second area perfusion liquid crystal;
Be sealed in the liquid crystal in first area and second area;
With the light-absorption layer that is arranged at second substrate lower surface;
Further, described spaced walls comprises and is roundaboutly arranged on spaced walls I in described isolated area, engages the spaced walls II of spaced walls I two ends and sealing frame and be connected the spaced walls III of spaced walls I and sealing frame respectively; Described spaced walls III and a spaced walls II correspondence are distributed in the both sides of spaced walls I;
Further, to be U-shaped structure roundabout for described spaced walls I;
Further, described spaced walls comprises that at least one thin layer with attachment function and at least one have the thick-layer of support functions;
The side chain of respective amount can be set in the side of spaced walls according to the size of liquid crystal pixel further;
Further, described thick-layer is made up of rigid organic material, ink jettable rigid organic material or printable rigid organic material that can photoetching;
Further, described thin layer adopts UV to solidify glue or heat-curable epoxy resin glue;
Further, at least one surface of described thick-layer has multiple projections or multiple depression;
Further, described liquid crystal is cholesteryl liquid crystal, the potpourri that it is made up of chiral liquid crystal and nematic liquid crystal, and the pitch of described chiral liquid crystal and described nematic liquid crystal is different.
A manufacture method for the encapsulating structure of polycomponent cholesteric liquid crystal electronic paper as described above, it is characterized in that comprising the steps: can photoetching rigid organic material be coated in the first substrate surface with the first electrode layer cleaning up and the second substrate surface with the second electrode lay; After coating, carry out prebake conditions processing and solidify processing, form uniform photosensitive film layer; Ultraviolet light exposes to described photosensitive film layer through the photomask with light tight pattern, part light-transparent pattern and complete light-transparent pattern, the non-thick-layer part of the corresponding described photosensitive film layer of described light tight pattern, multiple sunk parts of the corresponding described thick-layer of described part light-transparent pattern, the lands of the corresponding described thick-layer of described complete light-transparent pattern; Adopt alkaline-based developer remove not sensitization part can photoetching rigid organic material, obtain the thick-layer that described spaced walls comprises; Described photosensitive film layer after developing is carried out to high-temperature baking processing, and described baking temperature is 130 ± 5 ℃, and baking time is 20 minutes; After cooling, by ultrapure water rinsing and be dried processing; Form the first alignment films and the second alignment films; Adopt relief printing plate or intaglio printing mode by thin layer printing to described thick-layer; First substrate and second substrate are grouped together, carry out pressurized, heated processing, or the processing of pressurization ultraviolet irradiation, described encapsulating structure formed.
Owing to having adopted technique scheme, the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper provided by the invention and manufacture method thereof, can pour into plurality of liquid crystals, utilize the setting of spacer structures, can realize the different colours configuration of different viewing areas, simple in structure, cost-saving, can better meet the demand of Electronic Paper colorize.
Accompanying drawing explanation
Fig. 1 is the structural representation of encapsulating structure of the present invention;
Fig. 2 be Fig. 1 along A-A to sectional view;
Fig. 3 is the schematic diagram that surface of the present invention has the described thick-layer of multiple depressions;
Fig. 4 is the schematic diagram of thick-layer of the present invention with side chain;
Fig. 5, Fig. 6 are the schematic diagram that spaced walls of the present invention comprises the embodiment of at least one thin layer and at least one thick-layer;
Fig. 7 is the schematic diagram of sealing frame of the present invention;
Fig. 8 is the schematic diagram that can pour into the embodiment of 8 kinds of cholesteryl liquid crystals;
Fig. 9 is the structural representation of spaced walls of the present invention.
In figure: 1, first substrate, 2, the first electrode layer, 2-1, lead-in wire electrode on the first electrode layer, 2-2, show electrode on the first electrode layer, 3, the first alignment films, 4, spaced walls, 4-1, spaced walls I, 4-2, spaced walls II, 4-3, spaced walls III, 5, liquid crystal, 6, the second alignment films, 7, the second electrode lay, 7-1, lead-in wire electrode on the second electrode lay, 7-2, show electrode on the second electrode lay, 8, second substrate, 9, light-absorption layer, 10, the first sealing, 11, the second sealing, 12, sealing frame, 13, thick-layer, 14, thin layer, 15, depression, 16, side chain, 17, isolated area, 17-1, first area, 17-2, second area.
Embodiment
The encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper as shown in Fig. 1 to Fig. 6 and Fig. 9, comprising: the first substrate 1 being oppositely arranged and second substrate 8; Be formed at the first electrode layer 2 of first substrate 1 lower surface; Be arranged on first substrate 1 and cover the first alignment films 3 of the first electrode layer 2; Be formed at the second electrode lay 7 of second substrate 8 upper surfaces; Be arranged on second substrate 8 and cover the second alignment films 6 of the second electrode lay 7; Sealing frame 12 between first substrate 1 and second substrate 8, sealing frame 12 combines first substrate 1 and second substrate 8 with predetermined space, jointly forms enclosure space; Be distributed in side by side in described enclosure space, described enclosure space be separated into multiple spaced walls 4 of multiple isolated areas 17; Described in each, spaced walls 4 is separated into an isolated area 17 the first area 17-1 and the second area 17-2 that are isolated from each other; Be arranged in sealing frame 12, be respectively used to the first sealing 10 and second sealing 11 of first area 17-1 and second area 17-2 perfusion liquid crystal 5; Be sealed in the liquid crystal 5 in first area 17-1 and second area 17-2; With the light-absorption layer 9 that is arranged at second substrate 8 lower surfaces; Further, described spaced walls 4 comprises and is roundaboutly arranged on spaced walls I 4-1 in described isolated area 17, engages the spaced walls II 4-2 of spaced walls I 4-1 two ends and sealing frame 12 and be connected spaced walls I 4-1 and the spaced walls III 4-3 of sealing frame 12 respectively; Described spaced walls III 4-3 and a spaced walls II 4-2 correspondence are distributed in the both sides of spaced walls I 4-1; Further, to be U-shaped structure roundabout for described spaced walls I 4-1; Further, described spaced walls 4 comprises that at least one thin layer 14 with attachment function and at least one have the thick-layer 13 of support functions; The side chain 16 of respective amount can be set in the side of spaced walls 4 according to the size of liquid crystal pixel further; Further, described thick-layer 13 is made up of rigid organic material, ink jettable rigid organic material or printable rigid organic material that can photoetching; Further, described thin layer 14 adopts UV to solidify glue or heat-curable epoxy resin glue; Further, described thick-layer 13 at least one surface have multiple projections or multiple depression 15; Further, described liquid crystal is cholesteryl liquid crystal, the potpourri that it is made up of chiral liquid crystal and nematic liquid crystal, and the pitch of described chiral liquid crystal and described nematic liquid crystal is different.
A manufacture method for the encapsulating structure of polycomponent cholesteric liquid crystal electronic paper as described above, comprise the steps: can photoetching rigid organic material be coated in 1 surface of the first substrate with the first electrode layer 2 cleaning up and second substrate 8 surfaces with the second electrode lay 7; After coating, carry out prebake conditions processing and solidify processing, form uniform photosensitive film layer; Ultraviolet light exposes to described photosensitive film layer through the photomask with light tight pattern, part light-transparent pattern and complete light-transparent pattern, the non-thick-layer part of the corresponding described photosensitive film layer of described light tight pattern, multiple depressions 15 parts of the corresponding described thick-layer 13 of described part light-transparent pattern, the lands of the corresponding described thick-layer 13 of described complete light-transparent pattern; Adopt alkaline-based developer remove not sensitization part can photoetching rigid organic material, obtain the thick-layer 13 that described spaced walls 4 comprises; Described photosensitive film layer after developing is carried out to high-temperature baking processing, and described baking temperature is 130 ± 5 ℃, and baking time is 20 minutes; After cooling, by ultrapure water rinsing and be dried processing; Form the first alignment films 3 and the second alignment films 6; Adopt relief printing plate or intaglio printing mode that thin layer 14 is printed to described thick-layer 13; First substrate 1 and second substrate 8 are grouped together, carry out pressurized, heated processing, or the processing of pressurization ultraviolet irradiation, described encapsulating structure formed.
At least one surface of thick-layer of the present invention has multiple projections or multiple depression, can adopt the thick-layer method for making of photoetching technique, by circular or other shape of the not exclusively transparent also incomplete shading of design in template, control the height of the degree of depth or the projection of depression, Fig. 3 shows described thick-layer surface and has the embodiment of multiple depressions, wherein depression in the surface is set to circular concave shape, diameter is 5 microns, the degree of depth is 0.5 micron, because liquid crystal pixel is less than 100 microns, do not need to arrange side chain and support; Adopt irregular thick-layer, can significantly increase the bonding strength between thick-layer and substrate, alignment films or between thick-layer; Improve cohesiveness by physical form, can avoid the thick-layer after heating cure can not be effectively and the problem of thin layer bonding, be conducive to the scope that expansion material is selected, multiple projections or multiple depression be flux matched with the glue of thin layer.
Fig. 5, Fig. 6 show the embodiment that spaced walls of the present invention comprises at least one thin layer and at least one thick-layer; As shown in Figure 5, described spaced walls comprises a thin layer and a thick-layer, and described thick-layer is directly fixed on second substrate, the second alignment films is in the process of printing, due to relief printing plate excessive contact thick-layer surface, therefore only have a small amount of oriented material to stay thick-layer surface, its thickness is negligible.The colloidal materials of thin layer can pass through multiple depressions or multiple projection on thick-layer surface, is firmly connected on thick-layer, is then connected with the first alignment films or the first electrode layer.In sealing frame part, because there is no alignment films, the direct connection substrate of thin layer surface, or be attached to surperficial electrode, and the alignment layer surface Binder Phase cohesive strength higher than having.As shown in Figure 6, described spaced walls adopts the structure of two thick-layers and a thin layer, two thick-layers are directly fixed on respectively on first substrate and second substrate, alignment films is in the process of printing, equally because excessive contact thick-layer surface part only has a small amount of oriented material to stay on thick-layer, and the alignment films thickness on thick-layer is far thinner than the alignment films of other parts, its thickness is negligible; Thin layer can firmly be connected on thick-layer by multiple depressions on thick-layer surface or multiple projection, and this structure can be made the cholesteric liquid crystal layers of larger thickness.According to the structure of Fig. 5 and Fig. 6, the colloidal materials of thin layer is closely connected with thick-layer by pressure, according to the lamellar thickness of shape after the adhesive curing of the definite unlike material of experiment, just can control accurately the thickness of cholesteric liquid crystal layers.
The present invention can arrange in the side of spaced walls the side chain of respective amount according to the size of liquid crystal pixel, Fig. 4 shows specific embodiment, the thick-layer side wherein comprising in spaced walls is provided with multiple side chains, in the time that liquid crystal pixel becomes large, suitably the side in spaced walls arranges side chain, and then improve the support of spaced walls to first substrate and second substrate, can improve the support strength of spaced walls in the time that liquid crystal pixel increases by the setting of side chain.
Thick-layer of the present invention is made up of rigid organic material, ink jettable rigid organic material or printable rigid organic material that can photoetching; For forming the controlled pattern of shape of micron dimension, the rigid organic material that employing can photoetching, as the PSA030 that Taiwan Da Xing Materials Co., Ltd produces, PSA031 and PSA032 etc., and to implement photoetching method be effective; Adopt ink jettable rigid organic material, implement one or many ink-jet, also can form the spaced walls of micron dimension, thick-layer depression in the surface or convex shape can be by repeatedly ink-jet formation; Adopt printable rigid organic material, intaglio printing can form the spaced walls of micron dimension, and thick-layer depression in the surface or convex shape can be by repeatedly printing formation.
Thin layer of the present invention can adopt UV to solidify glue, the kind of commercial material is very many, for keeping the shape of spaced walls even, on the thick-layer of sclerosis, printing the curing glue of the UV of one deck below 1 micron completely, the shape of this layer of curing glue of UV does not need special forming technology; Utilize the spaced walls of thick-layer far away higher than surface and the alignment films of substrate, complete by method one-step prints such as letterpress; Described thin layer can also adopt heat-curable epoxy resin glue, and it is also the ideal material of printing thin layer, uses the manufacture method of epoxide-resin glue to it should be noted that the precuring of 80～90 ℃ of some material requires.UV solidifies glue and heat-curable epoxy resin glue stable chemical nature, and after solidifying, the reaction of discord liquid crystal material, high with substrate bonding intensity; Except these materials, other macromolecular material is also applicable to the thin layer of spaced walls.
First substrate of the present invention and second substrate are fitted with predetermined space according to the pattern of electrode layer, and form sealing box body with sealing frame, the enclosure space that described sealing frame and first substrate and second substrate form is separated into multiple isolated areas by multiple spaced walls, each isolated area comprises two first areas that are isolated from each other and second area, described first area and second area be corresponding the first sealing and the second sealing respectively, a kind of cholesteric liquid crystal material is only injected in each sealing, in first area and second area, inject two kinds of cholesteryl liquid crystals by the first sealing and the second sealing, spaced walls separates two kinds of liquid crystal completely, but guarantee to be spatially uniformly distributed by the structure of roundabout setting, every kind of a kind of color of liquid crystal display, after mixing, just can show color mixture, become a kind of other color, realize the demonstration of multiple variable color, multiple isolated areas can pour into multiple cholesteryl liquid crystal, multiple cholesteric liquid crystal layers has the incident light of different pitch reflection different colours, each liquid crystal layer has respectively separately independently drive electrode, show different colours by colour mixture, to meet the different colours configuration requirement of different viewing areas.
Liquid crystal of the present invention is cholesteryl liquid crystal, the potpourri that it is made up of chiral liquid crystal and nematic liquid crystal, and the pitch of described chiral liquid crystal and described nematic liquid crystal is different; Apply different voltage signals by electrode, every kind of liquid crystal reflects a kind of color, and so latter two liquid crystal layer colour mixture, obtains desirable color; Zones of different is by the spaced walls of different sizes are set, and then pours into different liquid crystal and carry out colour mixture, realizes variable colored demonstration; Can use the MDA-1444(nematic liquid crystal of Merck & Co., Inc.) and MDA-1445(cholesteryl liquid crystal) proportioning forms different colour mixture schemes, as MDA-1445(100%) inject from the first sealing, MDA-1444(30% is injected in the second sealing)+MDA-1445(70%), just can obtain blueness, orange or both are according to the colored viewing area of different luminous fluxes mixing.
Spaced walls of the present invention can be connected with second substrate with first substrate completely, also can simultaneously connect first substrate or second substrate, and another side is connected in electrode and alignment films; The width of described spaced walls is arranged between the first electrode layer and the second electrode lay, is no more than as far as possible electrode gap, can increase like this reflectivity of cholesteric liquid crystal layers; In the time considering alignment films, according to the coating order of alignment films, alignment films lays respectively at the two sides of thin layer, Fig. 5 shows the alignment films that thin layer two sides arranges, wherein an alignment films is between thick-layer and thin layer, another alignment films is foregoing the first alignment films, and Fig. 6 shows the alignment films that thin layer two sides arranges, and two alignment films are all between thin layer and thick-layer; Due to multiple projections or multiple depression being set on thick-layer, the experiment proved that alignment films is limited on close-burning impact.
Fig. 7 shows sealing frame of the present invention, and described the first sealing and the second sealing can be arranged on the sealing frame of the same side, also can be separately positioned on the sealing frame of both sides; As shown in Figure 7, two isolated areas are distinguished corresponding sealing in different sides, can once complete the perfusion of liquid crystal while being arranged on homonymy; The distribution space sealing while being arranged on heteropleural is many, but can not inject liquid crystal simultaneously.
The cholesteryl liquid crystal that light-absorption layer of the present invention is corresponding different, can be same color and different colours, black light-absorbing layer can absorb the light of transmission completely, colored light-absorption layer absorbs a part of transmitted light, the plane state reflected light colour mixture of while and liquid crystal layer shows more color, but can reduce the reflectivity of some wavelength.
Sealing frame of the present invention can adopt identical structure to manufacture with spaced walls simultaneously, also can manufacture separately by other method.Sealing frame width can be made as 50 microns, shows that marginal portion can be reduced in 0.2 millimeter, and the benefit that sealing frame and spaced walls are manufactured simultaneously, is the edge that can effectively reduce display, is beneficial to the weight that reduces costs and reduce display.Sealing frame needs very high cohesiveness conventionally, the method for making of general spaced walls is difficult to meet this cohesiveness requirement, so sealing frame adopts interval insulant and fluid sealant to mix conventionally, the glue of this mixing is being very difficult aspect control width, therefore in the time of design sealing frame width, all leaves certain surplus.And spaced walls of the present invention has benefited from the ingenious structure of the combination of thin layer and thick-layer, can meet the requirement of this high strength viscosity completely.
The dotted line of the two band arrows that are positioned at center section shown in Fig. 1 and Fig. 7 represents more to comprise the first area that is isolated from each other and the isolated area of second area, according to screen size, a display screen can pour into plurality of liquid crystals, to meet the different colours configuration of different viewing areas, in the time that cholesteric liquid crystal material is passed through vacuum method for implanting, by different liquid crystal grooves is set in vacuum chamber, once pour into multi-component liquid crystal by different sealings, form uniform polycomponent cholesteric liquid crystal layers, multiple cholesteryl liquid crystal is spaced apart wall to be separated completely, Fig. 8 shows the embodiment that can pour into 8 kinds of cholesteryl liquid crystals, as shown in Figure 8, 4 isolated areas are provided, setting is respectively the first isolated area 171, the second isolated area 172, the 3rd isolated area 173 and the 4th isolated area 174, corresponding the first sealing of each isolated area and the second sealing, can pour into the encapsulating structure of 8 kinds of different liquid crystal, the process of pouring into liquid crystal is as follows: from the first sealing perfusion MDA-1445(100% of the first isolated area 171), from the second sealing perfusion MDA-1444(5% of the first isolated area 171)+MDA-1445(95%), from the first sealing perfusion MDA-1444(10% of the second isolated area 172)+MDA-1445(90%), from the second sealing perfusion MDA-1444(20% of the second isolated area 172) and+MDA-1445(80%), from the first sealing perfusion MDA-1445(100% of the 3rd isolated area 173), from the second sealing perfusion MDA-1444(30% of the 3rd isolated area 173)+MDA-1445(70%), from the first sealing perfusion MDA-1444(30% of the 4th isolated area 174)+MDA-1445(70%), from the second sealing perfusion MDA-1444(10% of the 4th isolated area 174) and+MDA-1445(90%).Two kinds of liquid crystal that each isolated area injects colour mixture respectively, the like.First area or second area comprise row or one-row pixels respectively, and according to the scanning theory of passive matrix, two pixel colour mixtures show different colored; Described light-absorption layer can adopt black ink to use serigraphy to form, and the color mixture of above-mentioned like this 8 kinds of liquid crystal, is all the reflected colour of the plane state of cholesteric liquid crystal layers.
The manufacture method of the encapsulating structure of polycomponent cholesteric liquid crystal electronic paper of the present invention, basic identical with the technological process of common TN and stn liquid crystal display, difference is the manufacture process of described spaced walls, and rigid organic material that can photoetching is coated in the first substrate surface with the first electrode layer cleaning up and the second substrate surface with the second electrode lay; Described coating thickness is 5 μ m; After coating, carry out prebake conditions processing and solidify processing, form uniform photosensitive film layer, prebake conditions is processed and is removed solvent, and described solvent is 1-Methoxy-2-propyl acetate, and preliminary drying temperature is 90 ± 5 ℃, and the time is 90s; Ultraviolet light exposes to described photosensitive film layer through the photomask with light tight pattern, part light-transparent pattern and complete light-transparent pattern; Adopt alkaline-based developer remove not sensitization part can photoetching rigid organic material, obtain the thick-layer that described spaced walls comprises; Described photosensitive film layer after developing is carried out to high-temperature baking processing, and described baking temperature is 130 ± 5 ℃, and baking time is 20 minutes; After cooling, by ultrapure water rinsing and be dried processing; Form the first alignment films and the second alignment films; Adopt relief printing plate or intaglio printing mode by thin layer printing to described thick-layer; First substrate and second substrate are grouped together, carry out pressurized, heated processing, or pressurization ultraviolet irradiation processing, form the encapsulating structure of described liquid crystal electron paper; After forming the encapsulating structure of described liquid crystal electron paper, proceed to light-absorption layer printing through scratching the operations such as sheet, Liquid crystal pour, ultraviolet sealing, liquid crystal cleaning; Adopt the method for serigraphy or spraying to make light-absorption layer.
Principal feature of the present invention is the structure of spaced walls, cholesteric liquid crystal layers can be made up of tens of kinds of liquid crystal as required, and forms the demonstration of variable colour by fine liquid crystal layer Spatial Coupling; Spaced walls comprises thick-layer and thin layer in addition, and the box that both can form homogeneous is thick, can have again good cohesiveness.The edge of liquid crystal electron paper can be very narrow, accomplishes tens of microns or less, and this is that routine techniques is very inaccessible.
The present invention can, according to the needs that show, arrange multicolor displaying in the zones of different of liquid crystal electron paper; By the change of liquid crystal material kind and the reasonable setting of sealing, simplify technique, cost-saving, better meet the multicolor displaying of label made of paper, by multi-component cholesteryl liquid crystal and distinctive spacer structures, can form the liquid crystal electronic paper displayer of high-contrast, simple in structure, can better meet the demand of Electronic Paper colorize.In the time using ultra-thin glass substrate or use plastic base, liquid crystal electron paper also has flexible, and displaying contents can form multicolor displaying, and can not change because of bending.By the spacer structures of thick-layer and thin layer composition, make spaced walls there is the shape of homogeneous and the thickness of homogeneous, spaced walls and first substrate and second substrate have very strong cohesiveness and sealing simultaneously, prevent that liquid crystal from polluting mutually.By multiple projections or multiple depression are set on thick-layer, even if the overlapping situation of alignment films and spaced walls occurs, still there is high-intensity cohesiveness, high-intensity bonding, and excellent thick-layer shape control, go for the needs that current various occasions interval arranges and seals, cost is low, reliability is high, simple in structure, function admirable.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (10)
1. an encapsulating structure for polycomponent cholesteric liquid crystal electronic paper, is characterized in that comprising:
The first substrate (1) being oppositely arranged and second substrate (8);
Be formed at first electrode layer (2) of first substrate (1) lower surface;
Be arranged on first substrate (1) and go up and cover first alignment films (3) of the first electrode layer (2);
Be formed at the second electrode lay (7) of second substrate (8) upper surface;
Be arranged on second substrate (8) and go up and cover second alignment films (6) of the second electrode lay (7);
Be positioned at the sealing frame (12) between first substrate (1) and second substrate (8), sealing frame (12) combines first substrate (1) and second substrate (8) with predetermined space, jointly forms enclosure space;
Be distributed in side by side in described enclosure space, described enclosure space be separated into multiple spaced walls (4) of multiple isolated areas (17); Spaced walls described in each (4) is separated into an isolated area (17) first area (17-1) and the second area (17-2) that are isolated from each other;
Be arranged on sealing frame (12) upper, (11) are sealed in the first sealing (10) and second that is respectively used to (17-1) and second area (17-2) perfusion liquid crystal (5) to first area;
Be sealed in the liquid crystal (5) in first area (17-1) and second area (17-2);
With the light-absorption layer (9) that is arranged at second substrate (8) lower surface.
2. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 1, is characterized in that described spaced walls (4) comprises to be roundaboutly arranged on spaced walls I (4-1) in described isolated area (17), to engage the spaced walls II (4-2) of spaced walls I (4-1) two ends and sealing frame (12) and be connected spaced walls I (4-1) and the spaced walls III (4-3) of sealing frame (12) respectively; Described spaced walls III (4-3) and spaced walls II (4-2) correspondence are distributed in the both sides of spaced walls I (4-1).
3. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 2, is characterized in that described spaced walls I (4-1) is U-shaped structure roundabout.
4. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 1, is characterized in that described spaced walls (4) comprises that at least one has the thin layer of attachment function (14) and at least one and have the thick-layer (13) of support functions.
5. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 1, is characterized in that can arranging in the side of spaced walls (4) according to the size of liquid crystal pixel the side chain (16) of respective amount.
6. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 4, is characterized in that described thick-layer (13) is made up of rigid organic material, ink jettable rigid organic material or printable rigid organic material that can photoetching.
7. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 4, is characterized in that described thin layer (14) adopts UV to solidify glue or heat-curable epoxy resin glue.
8. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 4, is characterized in that at least one surface of described thick-layer (13) has multiple projections or multiple depression (15).
9. the encapsulating structure of a kind of polycomponent cholesteric liquid crystal electronic paper according to claim 1, it is characterized in that described liquid crystal is cholesteryl liquid crystal, the potpourri that it is made up of chiral liquid crystal and nematic liquid crystal, the pitch of described chiral liquid crystal and described nematic liquid crystal is different.
10. a manufacture method for the encapsulating structure of polycomponent cholesteric liquid crystal electronic paper as claimed in claim 8, it is characterized in that comprising the steps: can photoetching rigid organic material be coated in the first substrate with the first electrode layer (2) (1) surface cleaning up and second substrate (8) surface with the second electrode lay (7); After coating, carry out prebake conditions processing and solidify processing, form uniform photosensitive film layer; Ultraviolet light exposes to described photosensitive film layer through the photomask with light tight pattern, part light-transparent pattern and complete light-transparent pattern, the non-thick-layer part of the corresponding described photosensitive film layer of described light tight pattern, multiple depressions (15) part of the corresponding described thick-layer of described part light-transparent pattern (13), the lands of the described corresponding described thick-layer of complete light-transparent pattern (13); Adopt alkaline-based developer remove not sensitization part can photoetching rigid organic material, obtain the thick-layer (13) that described spaced walls (4) comprises; Described photosensitive film layer after developing is carried out to high-temperature baking processing, and described baking temperature is 130 ± 5 ℃, and baking time is 20 minutes; After cooling, by ultrapure water rinsing and be dried processing; Form the first alignment films (3) and the second alignment films (6); Adopt relief printing plate or intaglio printing mode that thin layer (14) is printed to described thick-layer (13); First substrate (1) and second substrate (8) are grouped together, carry out pressurized, heated processing, or the processing of pressurization ultraviolet irradiation, described encapsulating structure formed.
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