CN103852926B - Liquid crystal grating and preparation method thereof, display device - Google Patents

Liquid crystal grating and preparation method thereof, display device Download PDF

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CN103852926B
CN103852926B CN201410124363.6A CN201410124363A CN103852926B CN 103852926 B CN103852926 B CN 103852926B CN 201410124363 A CN201410124363 A CN 201410124363A CN 103852926 B CN103852926 B CN 103852926B
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electrode
substrate
liquid crystal
lead
leads
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CN103852926A (en
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王新志
吴梓平
何基强
李建华
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Truly Semiconductors Ltd
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Truly Semiconductors Ltd
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Abstract

The invention provides a kind of liquid crystal grating and preparation method thereof, display device, including:Multigroup first electrode on the inside of first substrate, every group of first electrode includes the 1st electrode~N electrode being arranged in order, positioned at second substrate inner side and the 1st lead~N leads arranged in parallel, the conductive particle between the first substrate and second substrate;By the conductive particle, the first electrode on first substrate is electrically connected with the lead on corresponding second substrate, from the processing step without carrying out plated film bridging again, simplify technological process, greatly reduce production cost.Also, the preparation method of liquid crystal grating provided by the invention, operated on common production line, without being produced on TFT special production line, be more beneficial for the popularization of liquid crystal grating and bore hole 3D display device.

Description

Liquid crystal grating and preparation method thereof, display device
Technical field
The present invention relates to display technology field, is filled more specifically to a kind of liquid crystal grating and preparation method thereof, display Put.
Background technology
With the rapid development of Display Technique, people can not be satisfied with two-dimentional display picture, with greater need for depth The picture of sense.Due to three-dimensional display apparatus(Abbreviation 3D)More comprehensively information can be provided, therefore, receive the extensive of people Concern.
Current most naked eye type 3D display device is all that one liquid crystal grating of setting, 2D are shown before 2D display screens When, possess high transmittance when not applying voltage on liquid crystal grating, have substantially no effect on brightness and resolution ratio of 2D display screens etc.;3D During display, apply certain voltage on the electrode of liquid crystal grating and form chequered with black and white striped, the light of left-eye image is only entered Entering left eye, the light of eye image only enters right eye, because the image that right and left eyes are watched has 6.5cm or so gap simultaneously, Therefore, can produces third dimension after brain synthesizes.
In initial liquid crystal grating, because the position of grating is fixed, therefore, 3D display device can only be in certain bits Put display stereoeffect.If larger, the left and right eye pattern that will see beholder is deviateed in the position of beholder with ad-hoc location As interfering with each other, or even the phenomenon of right and left eyes image upset occurs, cause beholder's dizziness.And solution party the most frequently used at present Method, grating is made into packaged type, then coordinates eyeball tracking(That is face system), track beholder position Afterwards, moving grating blend stop, beholder is made to see preferable stereoscopically displaying images in any position.
Existing packaged type liquid crystal grating, including be oppositely arranged first substrate, second substrate and positioned at the two it Between liquid crystal layer, there is the second electrode 20 as public electrode, as shown in figure 1, first substrate on the inside of the second substrate Inner side has a lead of multigroup first electrode 10 and the 1st lead arranged in parallel~the 7th i.e. towards the side of liquid crystal layer, and every group First electrode 10 includes the electrode of the 1st electrode~the 7th that numbering is 1~7, and the arriving by longitudinal direction of the M electrodes in every group Electrical lead electrically connects with corresponding M leads, wherein, M electrodes are any one electrode in the electrode of the 1st electrode~the 7th, from And be connected in parallel on numbering identical driving electrodes in each group together, then pass through the drive circuit being connected with lead, driving Numbering identical driving electrodes, realize the movement of grating.
And in the prior art when making above-mentioned liquid crystal grating, the conduction for making multigroup first electrode 10 and longitudinal direction first is drawn Line, insulating barrier is then made on the surface of longitudinal conductive lead wire, then horizontal lead is made in surface of insulating layer, and needing to connect The region punching for leading to longitudinal conductive lead wire and horizontal lead makes bridge, longitudinal conductive lead wire and corresponding horizontal lead is electrically connected Connect, wherein, longitudinal conductive lead wire passes through insulating barrier and other horizontal lead wire insulation(The region of filled circles is to be electrically connected in Fig. 1 Connect, the region of open circles is insulation).
But in the manufacture craft of liquid crystal grating of the prior art, due to needing to be connected by the way of plated film is put up a bridge Longitudinal conductive lead wire and horizontal lead, therefore, can only be in TFT(Thin Film Transistor, TFT) Special production line on produced, and complex process has had a strong impact on the popularization of liquid crystal grating and bore hole 3D display device.
The content of the invention
The invention provides a kind of liquid crystal grating and preparation method thereof, display device, to solve in the prior art due to liquid The manufacture craft of brilliant grating needs to make bridge, therefore, can only be operated on TFT special production line, and complex process, The problem of having a strong impact on the popularization of liquid crystal grating and bore hole 3D display device.
To achieve the above object, the invention provides following technical scheme:
A kind of liquid crystal grating, including first substrate, second substrate and the liquid crystal layer positioned there between being oppositely arranged, bag Include:
Multigroup first electrode on the inside of the first substrate, every group of first electrode include the 1st electricity being arranged in order Pole~N electrode;
Positioned at second substrate inner side and the 1st lead~N leads arranged in parallel;
Conductive particle between the first substrate and second substrate;
Insulating barrier positioned at the first electrode or the 1st lead~N wire surfaces subregion;
Wherein, the M electrodes in every group are electrically connected by the conductive particle with corresponding M leads, and pass through institute Insulating barrier and other lead wire insulation are stated, wherein, the M electrodes are any one electrode in the 1st electrode~N electrode.
Preferably, the 1st lead~N leads are located at the side of the second substrate.
Preferably, the 1st lead~N leads are divided into two groups, respectively positioned at the both sides of the second substrate.
Preferably, the conductive particle is uniformly distributed in the frame glue between the first substrate and second substrate.
Preferably, the M electrodes in every group are respectively provided with conductive lead wire, and pass through the conductive lead wire and corresponding described M leads electrically connect.
Preferably, the insulating barrier of the subregion is specially:Positioned at the first electrode or the 1st lead~N The surface of lead, and the insulating barrier of region hollow out that the M electrodes in every group electrically connect with corresponding M leads.
Preferably, the insulating barrier of the subregion is specially:Positioned at the first electrode or the 1st lead~N The surface of lead, and it is only located at M electrodes projection in a direction perpendicular to a substrate and the projections of other leads overlaps Region insulating barrier.
Preferably, the insulating barrier is positive photoresist, negative photoresist or silica, and its thickness range is 0.1 μm ~3 μm.
A kind of preparation method of liquid crystal grating, including:
Form multigroup first electrode on the inside of first substrate, every group of first electrode include the 1st electrode that is arranged in order~ N electrode;
The 1st lead~N leads arranged in parallel are formed on the inside of second substrate;
Insulating barrier is formed in the subregion of the first electrode or the 1st lead~N wire surfaces;
Conductive particle is filled between the first substrate and second substrate, makes the M electrodes in every group by described Conductive particle electrically connects with corresponding M leads, wherein, the M electrodes are any one in the 1st electrode~N electrode Electrode.
Preferably, the insulating barrier is by after transfer, spin coating or bat printing, being formed using photoetching process.
A kind of display device, including display panel and above-mentioned liquid crystal grating, wherein, the liquid crystal grating is positioned at described aobvious Show front side or the rear side of panel.
Compared with prior art, technical scheme provided by the present invention at least has advantages below:
Liquid crystal grating provided by the present invention and preparation method thereof, display device, multigroup first electrode is arranged on first The inner side of substrate, the 1st lead~N leads arranged in parallel are arranged on the inside of second substrate, then by first substrate and Conductive particle between second substrate, the first electrode on first substrate is set to be electrically connected with the lead on corresponding second substrate Connect, from the processing step without carrying out plated film bridging again, simplify technological process, greatly reduce production cost.Also, this The preparation method provided is provided, operated on common production line, without on TFT special production line Produced, be more beneficial for the popularization of liquid crystal grating and bore hole 3D display device.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the electrode of liquid crystal grating and pin configuration schematic diagram in the prior art;
Fig. 2 is the liquid crystal grating cross-sectional view that the embodiment of the present invention one provides;
Fig. 3 is the liquid crystal grating structure top view that the embodiment of the present invention one provides;
Fig. 4 is the liquid crystal grating preparation method flow chart that the embodiment of the present invention two provides.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention Embodiment be described in detail.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
Secondly, combination schematic diagram of the present invention is described in detail, when the embodiment of the present invention is described in detail, for purposes of illustration only, table The profile of showing device structure can disobey general proportion and make partial enlargement, and the schematic diagram is example, and it should not herein Limit the scope of protection of the invention.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
Embodiment one
Present embodiments provide a kind of liquid crystal grating, its cross-sectional view as shown in Fig. 2 including be oppositely arranged One substrate 1, second substrate 2 and liquid crystal layer 3 positioned there between, wherein, first substrate 1 is towards the side of liquid crystal layer 3, i.e., interior Side has multigroup first electrode 100, and every group of first electrode includes the 1st electrode~N electrode being arranged in order, second substrate 2 Inner side has second electrode 200, and the 1st lead~N leads arranged in parallel, i.e. liquid crystal grating in the present embodiment also wraps Include:Positioned at the inner side of second substrate 2 and the 1st lead~N leads arranged in parallel;And positioned at the He of first substrate 1 Conductive particle between second substrate 2;Positioned at the first electrode or the 1st lead~N wire surfaces subregion Insulating barrier;Wherein, the M electrodes in every group are electrically connected by the conductive particle with corresponding M leads, and by described Insulating barrier and other lead wire insulation, wherein, the M electrodes are any one electrode in the 1st electrode~N electrode.
Conductive particle between the first substrate and second substrate, it is preferably located at the base of first substrate 1 and second In frame glue 300 between plate 2 and equally distributed conductive particle, the conductive particle are preferably conductive gold spacer, the conductive gold Ball center is plastic cement, outer layer is gold, and its electric conductivity and the coefficient of expansion are consistent with frame glue, so as to so that on the inside of first substrate 1 M electrodes in every group are electrically connected by conductive particle M leads corresponding with the inside of second substrate.
Wherein, the conductive lead wire 101 positioned on first substrate 1, the lead 201 on second substrate 2 and frame glue 300 The frame region of liquid crystal grating is all located at, i.e., lighttight non-display area.In addition, the leaded material in the present embodiment Can be ITO(Indium Tin Oxide, tin indium oxide), metal (molybdenum, aluminium etc.) or metal oxide (tin indium oxide, indium Gallium zinc oxide etc.) etc..
In the present embodiment, the M electrodes in every group are respectively provided with conductive lead wire(Such as the longitudinal direction being connected in Fig. 3 with first electrode Solid line), and electrically connected by the conductive lead wire with the corresponding M leads.Certainly, in the other embodiment of the present invention In, M electrodes can also not have conductive lead wire, i.e. M electrodes can be electrically connected directly with corresponding M leads.
In the present embodiment, the overlooking structure figure of liquid crystal grating is as shown in figure 3, the inner side of first substrate 1 has the multigroup first electricity Pole, wherein, the group number of the first electrode is determined by the area of liquid crystal grating and the area etc. of first electrode.Such as Fig. 3 institutes To show, every group of first electrode includes the 1st electrode~N electrode being arranged in order, that is, numbers the N number of electrode for being 1~N, wherein, N For positive integer, preferably 7.And the inner side of second substrate 2 is in addition to second electrode 200, also with the arranged in parallel the 1st Lead~N leads, such as dotted line horizontal in Fig. 3, wherein, the 1st lead~N leads arranged in parallel are located at second electrode Around 200, and insulated with second electrode 200.
In addition, the 1st lead~N leads arranged in parallel and first on first substrate 1 are electric on second substrate 2 Pole 100 is correspondingly arranged, to make the M electrodes in every group by the conductive particle in frame glue 300 and corresponding M leads electricity Connection, wherein, the M electrodes are any one electrode in the 1st electrode~N electrode, such as make the 1st electrode in every group equal Electrically connected by the conductive particle in frame glue 300 with corresponding 1st lead, make the 2nd electrode in every group by frame glue 300 Conductive particle electrically connected with corresponding 2nd lead, so that numbering identical driving electrodes be connected in parallel on together, and by with The connected drive circuit of lead, realizes the movement of grating.
In order that being insulated between M electrodes and other leads that need not be electrically connected, the liquid crystal grating in the present embodiment is also Including the insulating barrier positioned at the first electrode or the 1st lead~N wire surfaces subregion, i.e., described insulating barrier can With the surface of the first electrode on first substrate, the surface of the 1st lead~N leads on second substrate can also be located at, Wherein, the insulating barrier can be positive photoresist, negative photoresist or silica etc., and its thickness range is 0.1 μm~3 μ m。
Wherein, the insulating barrier of the subregion is specially:Draw positioned at the first electrode or the 1st lead~N The surface of line, and the region that the M electrodes in every group electrically connect with corresponding M leads(Such as the region of filled circles in Fig. 3)Engrave Empty insulating barrier;Or it is positioned at the first electrode or the surface of the 1st lead~N leads, and to be only located at described The projection of the M electrodes in a direction perpendicular to a substrate region overlapping with the projection of other leads(Such as the area of open circles in Fig. 3 Domain)Insulating barrier.
In order that good electrical connection is formed between the M electrodes and M leads of void region, can be according to reality Situation adjusts the size of void region area, equally, in order to which the insulating barrier ensured between M electrodes and other leads can play Good insulating effect, the size of the area of projection overlapping region insulating barrier can also be adjusted according to actual conditions.
In the present embodiment, the 1st lead~N leads can be divided into two groups, and respectively positioned at the second substrate Both sides, the side of the second substrate can also be located at, it is preferred that the 1st lead~N leads are located at the second substrate Both sides, so can not only reduce the width of frame region, can also avoid on this basis due to the width between lead The problems such as lead caused by smaller or lead comparatively dense etc. breaks or is short-circuit.Certainly, in other embodiments of the invention, also may be used To be arranged on the side of second substrate, it has no effect on the implementation of the present invention program.
The liquid crystal grating that the present embodiment provides, first electrode is arranged on to the inner side of first substrate, by the arranged in parallel the 1st Lead~N leads are arranged on the inside of second substrate, then by the conductive particle between first substrate and second substrate, make the First electrode on one substrate electrically connects with the lead on corresponding second substrate, from the work without carrying out plated film bridging again Skill step, simplifies technological process, greatly reduces production cost.
Also, the liquid crystal grating that the present embodiment provides, in common TN(Twisted Nematic, twisted nematic)Face Plate or STN(Super Twisted Nematic, super twisted nematic)Can be produced on the production line of panel, from without To be produced on TFT special production line, be more beneficial for the popularization of liquid crystal grating and bore hole 3D display device.
Embodiment two
Present embodiments provide a kind of preparation method of liquid crystal grating, its flow chart as shown in figure 4, including:
S401:Multigroup first electrode is formed on the inside of first substrate, every group of first electrode includes the 1st electricity being arranged in order Pole~N electrode;
First substrate is provided first, and the first substrate is preferably glass substrate, then in first substrate towards liquid crystal layer Side, i.e. inner side, plated film etches to form multigroup first electrode, or first electrode and coupled conductive lead wire, described the The material of one electrode and conductive lead wire can be ITO(Indium Tin Oxide, tin indium oxide), metal or metal oxide, Such as molybdenum(Mo), molybdenum aluminium molybdenum(Mo-Al-Mo)Deng preferably ITO.
S402:The 1st lead~N leads arranged in parallel are formed on the inside of second substrate;
Second substrate is provided, second substrate is preferably glass substrate, and on the inside of second substrate, i.e., one towards liquid crystal layer Side, plated film etching, forms the 1st lead~N leads arranged in parallel, the material of the lead equally can be ITO(Indium Tin Oxide, tin indium oxide), metal or metal oxide, such as molybdenum(Mo), molybdenum aluminium molybdenum(Mo-Al-Mo)Deng preferably ITO.
S403:Insulating barrier is formed in the subregion of the first electrode or the 1st lead~N wire surfaces;
In the present embodiment, the material of the insulating barrier can be positive photoresist, negative photoresist or silica, described Insulating barrier is after transfer, spin coating or bat printing, is formed using photoetching process.Wherein, the purpose for forming insulating barrier is to ensure M electricity Pole, or the conductive lead wire of M electrodes, insulate between the lead of connection corresponding with being not required to, caused with avoiding short circuit between lead The confusion of drive signal, driving of the control circuit to first electrode is influenceed, wherein, the M electrodes are the 1st electrode~N electricity Any one electrode in extremely.
The insulating barrier of the subregion is specially:Positioned at the first electrode or the table of the 1st lead~N leads Face, and the insulating barrier of region hollow out that the M electrodes in every group electrically connect with corresponding M leads.Specifically forming method is: The surface of the first electrode or the 1st lead~N leads forms insulating barrier, then using photoetching process to the insulation The subregion of layer performs etching, and makes M electrodes(Or the conductive lead wire of M electrodes)With the area of corresponding M leads electrical connection Domain hollow out, in order to make M electrodes be electrically connected with M leads by the conductive particle between two substrates.
Or the insulating barrier of the subregion is specially:Draw positioned at the first electrode or the 1st lead~N The surface of line, and it is only located at what the projection projected with other leads of the M electrodes in a direction perpendicular to a substrate overlapped The insulating barrier in region.Specifically forming method is:In the projection of the M electrodes in a direction perpendicular to a substrate and other leads The overlapping region of projection form insulating barrier, so as to avoid M electrodes and the 1st lead~M-1 leads and M+1 leads Between~the N leads, i.e., the short circuit between M electrodes and other not corresponding leads.
S404:Conductive particle is filled between the first substrate and second substrate.
The purpose that conductive particle is filled between the first substrate and second substrate is to make the M electrodes in every group logical The conductive particle is crossed to electrically connect with corresponding M leads, wherein, the M electrodes are appointing in the 1st electrode~N electrode One electrode of meaning.
After first substrate and second substrate complete, liquid crystal need to be irrigated between two substrates, then using frame glue The liquid crystal grating is packaged, the frame glue is located at around liquid crystal layer, i.e., the frame region positioned at liquid crystal grating.This reality Apply in example, conductive particle is doped with frame glue, and conductive particle is uniformly distributed in frame glue after hardening.Due to leading The frame glue of electric particle is located between the lead on the electrode and second substrate on first substrate, and therefore, the conductive particle can be with Make first electrode, or the conductive lead wire of first electrode, electrically connected with corresponding lead.
The liquid crystal grating preparation method that the present embodiment provides, forms first electrode, in first substrate on the inside of first substrate Inner side forms lead, then connects first electrode and lead by the conductive particle between first substrate and second substrate, so as to The techniques such as plated film bridging need not be carried out again, both simplify technological process, greatly reduce production cost, and can in common TN or Operated on STN production lines, without being produced on TFT special production line, be more beneficial for liquid crystal grating with And the popularization of bore hole 3D display device.
Embodiment three
Present embodiments provide a kind of display device, including display panel, i.e. 2D display screens and any embodiment of the present invention The liquid crystal grating of offer, wherein, the liquid crystal grating is located at front side or the rear side of the display panel.
The display device that the present embodiment provides, liquid crystal grating are operated on common TN or STN production lines, no Need to be produced on TFT special production line, simplify technological process, greatly reduce production cost, so it is more favourable In the popularization of liquid crystal grating and bore hole 3D display device.
Although the present invention is disclosed as above with preferred embodiment, but is not limited to the present invention.It is any to be familiar with ability The technical staff in domain, without departing from the scope of the technical proposal of the invention, all using in the methods and techniques of the disclosure above Appearance makes many possible changes and modifications to technical solution of the present invention, or is revised as the equivalent embodiment of equivalent variations.Therefore, Every content without departing from technical solution of the present invention, the technical spirit according to the present invention are simply repaiied to made for any of the above embodiments Change, equivalent variations and modification, in the range of still falling within technical solution of the present invention protection.

Claims (10)

1. a kind of liquid crystal grating, including first substrate, second substrate and the liquid crystal layer positioned there between being oppositely arranged, it is special Sign is, including:
Multigroup first electrode on the inside of the first substrate, every group of first electrode include be arranged in order the 1st electrode~ N electrode;
On the inside of the second substrate and the 1st lead~N leads arranged in parallel, the 1st lead~N leads are located at The frame region of the liquid crystal grating;
Conductive particle between the first substrate and second substrate;
Insulating barrier positioned at the first electrode or the 1st lead~N wire surfaces subregion;
Wherein, the M electrodes in every group are electrically connected by the conductive particle with corresponding M leads, and by it is described absolutely Edge layer and other lead wire insulation, wherein, the M electrodes are any one electrode in the 1st electrode~N electrode;
The insulating barrier of the subregion is specially:Positioned at the first electrode or the surface of the 1st lead~N leads, And the insulating barrier of region hollow out that the M electrodes in every group electrically connect with corresponding M leads.
2. liquid crystal grating according to claim 1, it is characterised in that the 1st lead~N leads are located at described second The side of substrate.
3. liquid crystal grating according to claim 1, it is characterised in that the 1st lead~N leads are divided into two groups, point Not Wei Yu the second substrate both sides.
4. liquid crystal grating according to claim 1, it is characterised in that the M electrodes in every group are respectively provided with conductive lead wire, and Electrically connected by the conductive lead wire with the corresponding M leads.
5. liquid crystal grating according to claim 1, it is characterised in that the insulating barrier of the subregion is specially:It is located at The surface of the first electrode or the 1st lead~N leads, and the M electrodes are only located at perpendicular to the side of substrate The insulating barrier in the upward projection region overlapping with the projection of other leads.
6. liquid crystal grating according to claim 1, it is characterised in that the insulating barrier is positive photoresist, negative photo Glue or silica, its thickness range are 0.1 μm~3 μm.
7. according to the liquid crystal grating described in claim any one of 1-6, it is characterised in that the conductive particle is uniformly distributed in institute State in the frame glue between first substrate and second substrate.
A kind of 8. preparation method of liquid crystal grating, it is characterised in that including:
Multigroup first electrode is formed on the inside of first substrate, every group of first electrode includes the 1st electrode~N electricity being arranged in order Pole;
The 1st lead~N leads arranged in parallel are formed on the inside of second substrate, the 1st lead~N leads are positioned at described The frame region of liquid crystal grating;
Insulating barrier, the insulating barrier tool are formed in the subregion of the first electrode or the 1st lead~N wire surfaces Body is:Positioned at the first electrode or the surface of the 1st lead~N leads, and the M electrodes in every group and corresponding The insulating barrier of the region hollow out of M leads electrical connection;
Conductive particle is filled between the first substrate and second substrate, makes the M electrodes in every group by the conduction Particle electrically connects with corresponding M leads, wherein, the M electrodes are any one electrode in the 1st electrode~N electrode.
9. according to the method for claim 8, it is characterised in that the insulating barrier is by after transfer, spin coating or bat printing, adopting Formed with photoetching process.
A kind of 10. display device, it is characterised in that the liquid crystal light including display panel and as described in claim any one of 1-7 Grid, wherein, the liquid crystal grating is located at front side or the rear side of the display panel.
CN201410124363.6A 2014-03-28 2014-03-28 Liquid crystal grating and preparation method thereof, display device Active CN103852926B (en)

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