CN101685217A - Spliced liquid crystal display panel and process and combined large screen display thereof - Google Patents

Spliced liquid crystal display panel and process and combined large screen display thereof Download PDF

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Publication number
CN101685217A
CN101685217A CN200810183362A CN200810183362A CN101685217A CN 101685217 A CN101685217 A CN 101685217A CN 200810183362 A CN200810183362 A CN 200810183362A CN 200810183362 A CN200810183362 A CN 200810183362A CN 101685217 A CN101685217 A CN 101685217A
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liquid crystal
crystal panel
unified
polylith
splicing
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吴小平
罗天珍
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Abstract

The invention discloses a spliced liquid crystal display panel and a process and a combined large screen display thereof, belonging to electronic and photoelectric technical field. The basic structureof the spliced liquid crystal display panel is that a plurality of liquid crystal display panel members are placed on a unified bearing substrate, each liquid crystal display panel member is assembled from a transistor glass substrate and a color light filter which can be integral or clumpy, electrodes are introduced from the non-neighboring periphery of a plurality of liquid crystal display panels; and the spliced liquid crystal display panel can be used for single large screen display, and can be assembled into larger screen displaying walls by splicing for displaying places.

Description

Spliced liquid crystal panel and technology and the large screen display that is made up
The invention belongs to electronics and photoelectric technology, spliced liquid crystal panel is production technology and the large screen display that spliced extremely; Definite says it is the demonstration product and the processing technology thereof of a kind of electronics and photoelectric technology.
Use the liquid crystal panel production line of small size (below 32 inches), produce large-sized liquid crystal panel, the investment of required increase is often billions of!
The present invention provides a kind of production difficulty simplified structure and production technology, can finish large-sized liquid crystal panel of producing more than 40 inches under the situation that does not need additional investment; Also provide the mode that the electrode of being convenient to shorten liquid crystal panel is drawn on the other hand, be easy to make the narrower limit mosaic screen of large scale, be used for monitoring trade.
Characteristics of the present invention are: the difficulty on the decomposition texture; Spliced liquid crystal panel can combine with independent electric crystal glass substrate more than 2 and colored filter (can be); Just combine by polylith electric crystal glass substrate and polylith or a monoblock colored filter. draw as far as possible nearby directly (little direction changes) of electrode drawn in length and breadth; Avoid at the horizontal cabling in the frontier district of liquid crystal panel as far as possible, and extraction electrode bends little angle as far as possible, draw nearby, so could obtain the width of very little non-image displaying area, drawing of electrode is that non-periphery of bordering on each other from the polylith liquid crystal panel is drawn; With the width that reduces the border area (can in 5mm); The bearing substrate that is increased simultaneously also helps gaining in strength.
Key problem in technology of the present invention is; Being spliced by polylith liquid crystal panel (combining) by electric crystal glass substrate and colored filter. the polylith liquid crystal panel is placed on a unified bearing substrate/polylith independence liquid crystal panel member/members such as surperficial reinforced membrane and forms. and its principle of work is: the working electrode of (for example 4) polylith liquid crystal panel can keep mutual independence (also can interconnect in splice region). and the feature that also has is exactly; Use unified backlight, the polarized light piece that has defencive function concurrently also can be to overlay on the unified bearing substrate.
The key problem in technology of production technology: near traditional array processing procedure and upright processing procedure of group and splicing module group procedure; Technology just group is found processing procedure difference to some extent, changes the upright processing procedure of (splicing) group into, and 2 processing procedures are constant substantially in addition; Specific as follows: the array processing procedure; The upright processing procedure of (splicing) group; Module group procedure. the made polylith independence liquid crystal panel module that vacuumizes and inject liquid crystal is covered in the unified substrate that is used to support, and is fixed with flanging or bonding way again, forms unified incorporate slicing LCD panel; Can not be sandwiched in (this moment, electric crystal glass substrate and colored filter were same piece numbers) between 2 layers of bearing substrate that are used to support by the made independent liquid crystal panel member of polylith (also injecting liquid crystal after finishing the upright processing procedure of group) yet, and then the unified liquid crystal that injects.
Sealing and bonding edge regions are different than conventional art, and the splicing regions of (electric crystal glass substrate and colored filter) can seal, and just formed new periphery needs sealing after the splicing.
What below set forth is prior art so that compare: make TFT-LCD and mainly contain three important flow processs: the array processing procedure; The upright processing procedure of group; Module group procedure; Below be the main flowchart process of 3 processing procedures of tradition.
The array processing procedure
A slice smooth surface without any the glass of impurity, is to make the topmost raw material of TFT glass substrate. before making, need to wash glass completely with special edulcoration liquid, dehydration then dries.
Make glass substrate plate metallic film, need earlier metal material to be placed in the vacuum chamber, allow special gas above the metal produce the electricity slurry after, the atom on the metal will be hit glass, just forms from level to level metal then near film.
After having plated metal film, we also will plate non-conductive layer of one deck and semi-conductive layer, in vacuum chamber, earlier glass plate is heated, the sprinkler by high-tension electricity sprays special gas then, allows electronics and gas produce the electricity slurry, after the after chemical reaction, non-conductive layer and the semiconductor layer of just having formed on glass.
After film formed, we will be at the pattern of making electric crystal on glass.At first, enter the gold-tinted chamber and spray the extremely strong photoresistance liquid of sensitization, put light shield irradiation royal purple light then and expose, delivering to the district's spray developing liquid that develops at last, can remove the photoresistance behind the irradiation like this, can also allow the photoresist layer typing.
After the photoresistance typing, we carry out Wet-type etching at useful etch, otiose film is exposed, but also the chemical reaction of electricity consumption slurry carry out dry-etching, the photoresistance that stays are removed with slide liquid after the etching again, have just produced electric crystal circuitry needed pattern at last.
Form available membrane transistor, need repeated washing, plated film, last photoresistance, exposure is developed, etching, in general processes such as removing photoresistance, make TFT-LCD, will repeat 5 to 7 times.
The upright processing procedure of group
After finishing the membrane transistor glass substrate, we will carry out the combination of liquid crystal panel, and liquid crystal panel is to be combined by electric crystal glass substrate and colored filter, and at first, we want elder generation with the glass wash clean, carry out next procedure again.The whole manufacturing process of TFT-LCD all must so just not have impurity in the display the inside in dust free room.
Colored filter is the mode with chemistry coating, in the color of formation red, green, blue on glass, covers the film that one deck can conduct electricity after the proper alignment again and promptly finishes.
In the process of whole combination, at first we will be coated with the last layer chemical film for glass and the colored filter that is covered with electric crystal, and then carry out the action of orientation.
Before combination two glass sheets, we want on average to be covered with earlier the sub-fixed intervals in crack of spheroidal, in order to avoid after the liquid crystal panel combination, and the two sheet glass song that concaves.Logical
Normal liquid crystal panel can stay the next one or two breach when combination, in order to the follow-up liquid crystal that pours into, be enclosed in two sheet glass edges with frame glue and conducting resinl with that, has so just finished the combination of glass.
Sealed after the frame, just liquid crystal panel has been put into vacuum chamber, seen through the breach of reserving just now the air of liquid crystal panel is taken out, nationality helps atmospheric pressure to pour into liquid crystal then, again breach is sealed, and liquid crystal is a kind of chemical combination material between solid and liquid, has the characteristic of regular molecules align.
At last stick the polaroid of two vertical direction again, the full wafer liquid crystal panel is promptly finished.
In the process of whole combination, at first we will be coated with the last layer chemical film for glass and the colored filter that is covered with electric crystal, and then carry out the action of orientation.
Module group procedure
After polaroid attached and finishes, we promptly began to carry DRIVE IC in the both sides of liquid crystal panel, and DRIVE IC is very important driving part, is to be used for controlling liquid crystal color, luminance switch.
And then force entering end and the circuit board of DRIVE IC welded conducting through scolding tin.Signal just can send smoothly like this, then image on the control panel.
The light of liquid crystal panel sends from backlight, and before the assembling backlight, it is perfect that we can check that earlier the liquid crystal panel that has made up has or not, and then the assembling backlight, and backlight is exactly the light source behind the liquid crystal panel.
At last, again CELL and chase are locked with screw.
Come just to have entered the test process of final key again, the upright MODULE that finishes does burn-in test with group, in the energising and the condition of high temperature, filters out the bad product of quality.
And the technology of the present invention and technology are removed on the basis of inheriting tradition technology and structure; Following unique features is arranged:
Spliced liquid crystal panel production technology: especially in the upright processing procedure of group, great structure and technology difference are arranged;
When the slicing LCD panel that uses is that (polylith independently colored filter can be and the polylith polylith stand-alone configuration that mates mutually of electric crystal glass substrate independently when independently electric crystal glass substrate and independent colored filter combine by polylith; When also promptly independently the electric crystal glass substrate combines with independently colored filter is corresponding one by one by polylith), made in such cases polylith independence liquid crystal panel module has vacuumized and has injected liquid crystal, only need be covered in the unified substrate that is used to support this moment, fixed with flanging or bonding way again, formed unified incorporate slicing LCD panel.
Another kind of situation is: the independent liquid crystal panel module (also not injecting liquid crystal after finishing the upright processing procedure of group) that polylith is made, need the independent liquid crystal panel module that polylith is made be sandwiched in and be used between 2 layers of integral light-transmitting substrate this moment, one deck can be a glass substrate, another layer can be that (polaroid of two vertical direction can be bonding at last for polaroid or antiglare sheet, one deck is bonded on 1 layer of integral light-transmitting substrate, another layer is directly on the colored filter). the liquid crystal of next annotating again. (to found processing procedure the same with traditional group, can stay the next one or two breach, in order to the follow-up liquid crystal that pours into, be enclosed in two sheet glass edges with frame glue and conducting resinl with that, so just finished the combination of glass.Sealed after the frame, just liquid crystal panel has been put into vacuum chamber, seen through the breach of reserving just now the air of liquid crystal panel is taken out, nationality helps atmospheric pressure to pour into liquid crystal then, again breach is sealed, and liquid crystal is a kind of chemical combination material between solid and liquid, has the characteristic of regular molecules align; At last stick the polaroid of two vertical direction again, the full wafer slicing LCD panel is promptly finished), and then the unified liquid crystal that injects.
Also having a kind of situation is (when equipment is limit can't realize large-area technological operation the time, the separated regions complete operation), that is to say that on same glass substrate subregion repeatedly finishes the associative operation of array processing procedure, finish area at every turn, just can finish one technological operation 4 times such as 1/4.
Below further carefully separate above-mentioned technical characterictic:
A kind of spliced liquid crystal panel; (combine by the polylith liquid crystal panel by electric crystal glass substrate and colored filter, can comprise that toward contact members such as polarizer membrane and extraction electrode and sealing form) or its member (often can be electric crystal glass substrate member, because of often being subject to the equipment problem that drops into, this member is difficult for making bigger size, the splicingization processing is unique selection) be spliced. polylith liquid crystal panel or its member are placed on the unified bearing substrate 1, and to form at members such as surperficial reinforced membranes. its principle of work is: (2,4 or polylith) liquid crystal panel can keep mutual independence (colored filter can be whole), the electrode of every electric crystal glass substrate can keep mutual independence also can so just display area can be increased many times in splicing tape place mutual conduction; Its most basic feature just is; What its backing structure used is unified backlight, promptly can be that polylith liquid crystal panel integrated member (also can be with the electric crystal glass substrate assembly in the liquid crystal panel) is placed on the unified bearing substrate (transparent) in connecting method, the polaroid of two vertical direction promptly can overlay on each piece and independently also can overlay on the unified bearing substrate on the surface of former liquid crystal panel; That layer transparent panel that (in the slicing LCD panel) is covered with colored filter promptly can be that independently polylith also can be an incorporate block structure, if polylith structure, also need place the unified bearing substrate of another piece (transparent) on its surface, be sealed and cover; The polaroid of two vertical direction can be to overlay on to reach on the bearing substrate on the unified colored filter (substrate), also can be in splicing in conjunction with before overlaying on independent electric crystal glass substrate and the colored filter; Drawing of electrode is that non-periphery of bordering on each other from the polylith liquid crystal panel is drawn; The splicing regions of (electric crystal glass substrate and colored filter) can add sealing strip also can seal (connected state that keeps liquid crystal), and the sealing at splicing position and end face processing mode can be that resistance light mode also can be the leaded light mode.
Unified backlight in the slicing LCD panel refer to LED dot matrix or thin fluorescent tube luminescent device constituted for the light mode, and form the unified face backlight of an integral body. for the light mode remain traditional side for light mode or face for light mode backlight.
Drawing of electrode in the slicing LCD panel is that non-periphery of bordering on each other from the polylith liquid crystal panel is drawn; Be meant and bend little angle by extraction electrode as far as possible (extraction electrode is more little with respect to the change of original direction of the electrode in length and breadth in the electric crystal glass substrate, it is also just more little to bend little angle), so equal to draw nearby, so promptly can reduce the width that hem width also can increase extraction electrode, draw length for shortening physical condition further be provided, could obtain the width of very little non-image displaying area.
The sealing at the splicing position described in the slicing LCD panel and end face processing mode can be that resistance light mode also can be that the leaded light mode refers to: resistance light mode is coated with hindering the light coating or being hindered the light partition on the surface of splicing end face; The leaded light mode is meant on the surface of splicing end face coated with leaded light coating or leaded light partition or keep the nature end face in addition. splicing regions also provides cushion space for the thermal expansion of liquid crystal on the other hand, (this layer or title sealing partition), can seal to stop liquid crystal to seal in other layer, the expansion characteristics of employing resistance light or leaded light partition just can reach this purpose when opposite with the expansion characteristics of liquid crystal.
Spliced liquid crystal panel production technology: form by array processing procedure and the upright processing procedure of group and splicing module group procedure; Its most fundamental characteristic just is; A kind of technological process is that the made polylith independence liquid crystal panel module that vacuumizes and inject liquid crystal (can be the independent liquid crystal panel module that the polaroid of two vertical direction is not also sticked on the surface) is covered in the unified substrate that is used to support, fixed with flanging or bonding way again, formed unified incorporate slicing LCD panel (sticking the polaroid of two vertical direction again on two surfaces); Another kind of technology can be sandwiched in also that (the splicing limit of polylith independence liquid crystal panel module can be bonding in such cases between 2 layers of unified substrate that are used to support by the made independent liquid crystal panel member of polylith (also not injecting under the situation of liquid crystal after finishing the upright processing procedure of group), because the sealing on splicing limit can utilize 2 layers of unified substrate up and down to finish), and then the unified liquid crystal that injects; It is (when equipment is limit can't realize large-area technological operation the time that the 3rd kind of technology situation arranged again, the separated regions complete operation, this kind situation need not be spliced and realized large scale, the basic liquid crystal process of 2 laminar substrates still just, substrate electric crystal glass substrate and colored filter substrate), that is to say that on same glass substrate subregion repeatedly finishes the associative operation of array processing procedure, finish area than (as 1/4) at every turn, divide (4 times) just can finish one technological operation, upright processing procedure of group and module group procedure still not the subregion finish, the technology of encapsulation and filling liquid crystal is still upright processing procedure of traditional group and module group procedure; More than when handling the end face at splicing position, each can be spliced end face area in 3 kinds of technology situations to hinder that the light mode handles also can be that the leaded light mode is handled.
Resistance light (or leaded light) buffer bar (layer or title partition) splicing tape buffering (sealing strip), be adhered on the section that contacts with each other of transistor substrate and filter sheet base plate, can finish the sealing of section, also can make up between transistor substrate and filter sheet base plate and the bearing substrate by bonding way.
A kind of large screen display that uses spliced liquid crystal panel to splice; Be to use the spliced liquid crystal panel formula of polylith display to be spliced, and form the big view display of any splicing of M * N, its visual interval width is expected to have only several millimeters.
Be illustrated with regard to characteristics of the present invention below in conjunction with accompanying drawing:
Fig. 1 transistor substrate and filter sheet base plate independently splice the liquid crystal display synoptic diagram.
The incorporate splicing liquid crystal display of Fig. 2 filter sheet base plate synoptic diagram.
The liquid crystal panel structure synoptic diagram that Fig. 3 is traditional.
Number description:
1 electric crystal glass substrate member
2 colorized optical filtering sheet elements
3 bearing substrates
4 surperficial reinforced membrane members
5 polaroids (reinforced membrane of can holding concurrently)
6 (drawing) electrode
7 splicing tapes (district)
8 unified backlight members
10 non-peripheries of bordering on each other
11 (periphery) band (bar)
12 resistance light (or leaded light) buffer bar (layer or title partition) splicing tape buffering (sealing strip)
Fig. 1 transistor substrate and filter sheet base plate independently splice the liquid crystal display synoptic diagram.
This structure is 2 * 2 splicing panel, (going up bearing substrate is positioned on the colorized optical filtering sheet element 2 between 2 bearing substrates 3 up and down, do not draw among the figure) accompany 4 cover electric crystal glass substrate members 1 and colorized optical filtering sheet element 2. resistance light (or leaded light) buffer bar (layer or title partition) the 12nd, select the dress parts, be added between member 1 and the 2 handing-over end faces, just at the position of splicing tape (district) 7, the heat that can be used for cushioning liquid crystal factor (also can seal) such as rise, the stable .5 that keeps liquid crystal working lining thickness in the whole liquid crystal panel is surperficial reinforced membrane member and polaroid (reinforced membrane of can holding concurrently), 6 are periphery (drawing) electrode. drawing of it is to draw from 10 non-peripheries of bordering on each other, surrounding area at each layer, the same (periphery) band (bar) 11 that is placed with traditional handicraft, play sealing function to liquid crystal. can adopt bonding way to finish between each layer (removing the pixel region of electric crystal glass substrate and colored filter). in fact 8 is independent liquid crystal panel modules, but each is individual packages all, make LCD, also can install the connection conductive electrode additional at the position of splicing tape (district) 7 in case of necessity, make the electrode conducting each other of each electric crystal glass substrate member.
The incorporate splicing liquid crystal display of Fig. 2 filter sheet base plate synoptic diagram.
This structure also is that splicing panel and Fig. 1 of a kind of 2 * 2 are basic identical, only use down bearing substrate 3 (go up bearing substrate can furthermore) by (complete) colorized optical filtering sheet element 12, accompany 4 cover electric crystal glass substrate members, 1. resistance light (or leaded light) buffer bar (layer or title partition) the 12nd, choosing dress parts, be added between member 1 and the 2 handing-over end faces, just at the position of splicing tape (district) 7, the heat that can be used for cushioning liquid crystal factor (also can seal) such as rise, the stable .4 and 5 that keeps liquid crystal working lining thickness in the whole liquid crystal panel is respectively surperficial reinforced membrane member and polaroid (reinforced membrane of can holding concurrently), 6 are periphery (drawing) electrode. drawing of it is to draw from 10 non-peripheries of bordering on each other, surrounding area at each layer, the same (periphery) band (bar) 11 that is placed with traditional handicraft plays the sealing function to liquid crystal.
The liquid crystal panel structure synoptic diagram that Fig. 3 is traditional.
Be by electric crystal glass substrate member 1 and colorized optical filtering sheet element 2, surface reinforced membrane member 4, polaroid (reinforced membrane of can holding concurrently) 5, (drawing) electrode 6 (what represent among the figure is gas), and unified backlight member 8 is formed. (periphery) band (bar) 11 still plays a part liquid crystal material is sealed.

Claims (6)

1. spliced liquid crystal panel; Being spliced by polylith liquid crystal panel (forming) member by electric crystal glass substrate member and colored filter component composition. polylith liquid crystal panel or its partial component are placed on the unified bearing substrate 3, bearing substrate can be 2 up and down when being necessary, and adding reinforced membrane members such as (polaroids of can holding concurrently) on the bearing substrate surface. its structural principle is: (2,4 or polylith) liquid crystal panel can keep mutual independence (colored filter can be whole), the electrode of every electric crystal glass substrate can keep the mutual independence also can be in splicing tape place mutual conduction, so just display area can be increased many times, under the driving of the extraction electrode of the periphery of each liquid crystal panel, the liquid crystal of the corresponding liquid crystal cell of each pixel will be finished the driving to liquid crystal; Its feature just is; What its backing structure used is unified backlight, promptly can be that polylith liquid crystal panel integrated member (also can be with the electric crystal glass substrate assembly in the liquid crystal panel) is placed on the unified bearing substrate (transparent) in connecting method, the polaroid of two vertical direction promptly can overlay on each piece and independently also can overlay on the unified bearing substrate on the surface of former liquid crystal panel; That layer transparent panel that (in the slicing LCD panel) is covered with colored filter promptly can be that independently polylith also can be an incorporate block structure, if polylith structure, also need place the unified bearing substrate of another piece (transparent) on its surface, be sealed and cover; The polaroid of two vertical direction can be to overlay on to reach on the bearing substrate on the unified colored filter (substrate), also can be in splicing in conjunction with before overlaying on independent electric crystal glass-based and the colored filter; Drawing of electrode is that non-periphery of bordering on each other from the polylith liquid crystal panel is drawn; The splicing regions of (electric crystal glass substrate and colored filter) can add sealing strip also can seal (connected state that keeps liquid crystal), and the sealing at splicing position and end face processing mode can be that resistance light mode also can be the leaded light mode.
2. spliced liquid crystal panel production technology: form by array processing procedure and the upright processing procedure of group and splicing module group procedure; Its feature just is; A kind of technological process is that the made polylith independence liquid crystal panel module that vacuumizes and inject liquid crystal (can be the independent liquid crystal panel module that the polaroid of two vertical direction is not also sticked on the surface) is covered in the unified substrate that is used to support, fixed with flanging or bonding way again, formed unified incorporate slicing LCD panel (sticking the polaroid of two vertical direction again on two surfaces); Another kind of technology can be sandwiched in also that (the splicing limit of polylith independence liquid crystal panel module can be bonding in such cases between 2 layers of unified substrate that are used to support by the made independent liquid crystal panel member of polylith (also not injecting under the situation of liquid crystal after finishing the upright processing procedure of group), because the sealing on splicing limit can utilize 2 layers of unified substrate up and down to finish), and then the unified liquid crystal that injects; It is (when equipment is limit can't realize large-area technological operation the time that the 3rd kind of technology situation arranged again, the separated regions complete operation, this kind situation need not be spliced and realized large scale, the basic liquid crystal process of 2 laminar substrates still just, substrate electric crystal glass substrate and colored filter substrate), that is to say that on same glass substrate subregion repeatedly finishes the associative operation of array processing procedure, finish area than (as 1/4) at every turn, divide (4 times) just can finish one technological operation, upright processing procedure of group and module group procedure still not the subregion finish, the technology of encapsulation and filling liquid crystal is still upright processing procedure of traditional group and module group procedure; More than when handling the end face at splicing position, each can be spliced end face area in 3 kinds of technology situations to hinder that the light mode handles also can be that the leaded light mode is handled.
3. as claim 1 and 2 described liquid crystal panels, its feature just is; Described unified backlight refers to the confession light mode that is constituted with LED dot matrix or thin fluorescent tube luminescent device, and forms the unified face backlight of an integral body.
4. as claim 1 and 2 described liquid crystal panels, its feature just is; Drawing of described electrode is that non-periphery of bordering on each other from the polylith liquid crystal panel is drawn; Be meant that extraction electrode can bend little angle as far as possible, draw nearby, so can reduce hem width, could obtain the width of very little non-image displaying area.
5. as claim 1 and 2 described liquid crystal panel and technologies, its feature just is; The sealing at described splicing position and end face processing mode can be that resistance light mode also can be that the leaded light mode refers to: resistance light mode is coated with hindering the light coating or being hindered the light partition on the surface of splicing end face; The leaded light mode is meant on the surface of splicing end face coated with leaded light coating or leaded light partition or keep the nature end face in addition; Adopt the expansion characteristics of resistance light or leaded light partition can on the contrary also can be identical with the expansion characteristics of liquid crystal, resistance light (or leaded light) or claim buffer bar (layer or claim the sealing partition also or claim (periphery) band (bar)), can seal to stop liquid crystal to seal in other layer.
6. one kind is used the large screen display that spliced liquid crystal panel spliced; Its feature just is: use the spliced liquid crystal panel formula of polylith display to be spliced, and form the big view display of any splicing of M * N.
CN200810183362A 2008-09-24 2008-11-28 Spliced liquid crystal display panel and process and combined large screen display thereof Pending CN101685217A (en)

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CN102402901B (en) * 2011-12-21 2014-04-23 广东威创视讯科技股份有限公司 Device for optimizing display effect of spliced screen
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CN102967959A (en) * 2012-11-21 2013-03-13 合肥工业大学 Preparation method of large-sized display screen for projection display
WO2014146348A1 (en) * 2013-03-21 2014-09-25 京东方科技集团股份有限公司 Display panel and manufacturing method therefor, and display
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