CN106483754A - A kind of projection screen - Google Patents
A kind of projection screen Download PDFInfo
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- CN106483754A CN106483754A CN201510552209.3A CN201510552209A CN106483754A CN 106483754 A CN106483754 A CN 106483754A CN 201510552209 A CN201510552209 A CN 201510552209A CN 106483754 A CN106483754 A CN 106483754A
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- projection screen
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Abstract
The invention discloses a kind of projection screen, this projection screen includes parallel arrangement of entablature and sill, the screen unit being arranged between entablature and sill and tensioner；Screen unit includes multiple sub-screen units of the bearing of trend arrangement along entablature and sill；Wherein, each sub-screen unit includes two pieces of transparency carriers be arrangeding in parallel, at least two Fresnel modules being folded in the direction arrangement pointing to sill between two pieces of transparency carriers and along entablature；The upper end of each transparency carrier is connected with entablature, and bottom is connected with sill；Tensioner is used for two pieces of transparency carriers of each sub-screen unit are stretched between entablature and sill.This projection screen is not because using metal framework to fix each Fresnel module, so can prevent light path from being blocked by metal framework, and then will not produce blanking bar because being provided with metal framework in viewing area on projection screen, and can improve the picture quality of display.
Description
Technical field
The present invention relates to display technology field, particularly to a kind of projection screen.
Background technology
Developing rapidly with Display Technique, large-scale rear projection splicing wall be widely used in government, the energy,
The numerous areas such as traffic, public safety department, large and medium-sized enterprise, wherein most typical representative is namely based on
The back projection box body formula spliced display wall of DLP (Digital Light Processing) shadow casting technique, Ye Jiye
The DLP splicing of interior abbreviation.
With regard to DLP splicing Screen Technology, specially by include Fresnel module high-gain optics curtain with
Bonding or method of clamping are fixed with glass or resin substrate, are then integrally attached on metal framework, thus protecting
The smooth and exactitude position of card high-gain optics curtain, final configuration is supported solid by multiple metal frameworks
Fixed screen unit carries out matrix arrangement in " matts " mode, to form a large-area displays area
Domain.
The screen of existing employing DLP splicing, as shown in figure 1, because DLP splicing is using big
Amount each Fresnel module of metal framework 120 structural support, is therefore equipped with each Fresnel module periphery
Metal framework 120, if the ray machine of scialyscope and camera lens 110 are using designing from axle, that is, has bias,
The imaging region center point leading to projection screen has certain side-play amount apart from optical axis, as shown in figure 1, with
As a example one of projection screen screen unit, the optical axis of the ray machine of scialyscope and camera lens 110 is not in screen list
In unit 100, a part of meeting in the light of screen unit 100 for irradiation of ray machine and camera lens 110 transmitting
Blocked by metal framework 120, and then blanking bar 101 is formed on screen unit 100, so, whole projection
The picture quality of screen display will be very poor.
Content of the invention
The invention provides a kind of projection screen, the light path in this projection screen will not be blocked by metal framework,
So blanking bar will not be produced because being provided with metal framework in viewing area on screen, and the image of display can be improved
Quality.
For reaching above-mentioned purpose, the present invention provides technical scheme below：
A kind of projection screen, including：Parallel arrangement of entablature and sill；Be arranged at described entablature and
Screen unit between sill, described screen unit includes the bearing of trend along described entablature and sill
Multiple sub-screen units of arrangement；Wherein, each described sub-screen unit include be arrangeding in parallel two pieces is thoroughly
Bright substrate, it is folded between two pieces of described transparency carriers and points to along described entablature the direction of described sill
At least two Fresnel modules of arrangement；The upper end of each described transparency carrier is with described entablature even
Connect, bottom is connected with described sill；For transparent by described two pieces of each described sub-screen unit
Substrate is stretched in the tensioner between described entablature and sill.
Multiple sub-screen units of above-mentioned projection screen are arranged in simultaneously along the bearing of trend of entablature and sill
Between the entablature of row setting and sill, transparent by two pieces of each sub-screen unit by tensioner
Substrate is stretched between entablature and sill, and is clamped along point to from entablature by two pieces of transparency carriers
At least two Fresnel modules of the direction arrangement of crossbeam；Therefore, multiple sub-screen units of this projection screen
Between directly arrange, be spliced to form screen unit, at least two Fresnel modules of sub-screen unit are by two pieces
Transparency carrier sandwiched, the weight of all sub-screen units transfers to entablature and lower horizontal stroke by two pieces of transparency carriers
Liang Shang, is supported the weight of all sub-screen units by entablature and sill, so between Fresnel module not
Need setting metal framework to be supported, eliminate the gold that existing projection screen is arranged between Fresnel module
Belong to framework, and because not having metal framework in viewing area, light path will not be blocked by metal framework,
Also blanking bar will not be produced because being provided with metal framework in viewing area on projection screen, and the figure of display can be improved
As quality.
Preferably, the transparency carrier of each described sub-screen unit has string configuration, and described
The long side of bright substrate is vertical with the bearing of trend of described entablature.
Preferably, described transparency carrier is strip glass.
Preferably, the described transparency carrier of each described sub-screen unit and described entablature and sill it
Between connected by structural member, described structural member is provided with the adjustment structure for adjusting described structural member length；Cause
This, when connecting entablature or sill by structural member, can change structural member by adjustment structure
Length, so that transparency carrier can be adjusted by adjustment structure with the distance between entablature or sill
Section, makes the installation or removal process of sub-screen unit become easy.
Preferably, each is used for connecting the structure between the transparency carrier of described sub-screen unit and entablature
It is connected by the hook of multipair mounting cooperation and mounting interface between part and described entablature；And/or, each
For connect the structural member between the transparency carrier of described sub-screen unit and sill and described sill it
Between by multipair mounting cooperation hook and mounting interface connect.
Preferably, in described Fresnel module, described Fresnel Lenses layer and lens pillar are laminated together,
And fixed by screw；In the outer surface of described Fresnel Lenses layer and two pieces of described transparency carriers one piece glues
Patch, another piece of stickup in the outer surface of described lens pillar layer and two pieces of described transparency carriers, and described
Fresnel module is clamped in the middle of two pieces of described transparency carriers as intermediate layer.
Preferably, described entablature and sill are made with metal material.
Preferably, described tensioner include outside described screen unit and length-adjustable left column and
Right column, described left column is parallel to each other with right column and vertical with described entablature；Described left column and
One end of right column is connected with described entablature, and the other end is connected with described sill.Due to left column and the right side
The length of column can be adjusted, therefore when carrying out tensioning to transparency carrier, by left column and right column
Length be adjusted can achieve the tensioning of transparency carrier.
Preferably, described tensioner is the firm banking for being connected with sill.
Brief description
Fig. 1 is the operation principle schematic diagram of the screen in prior art using DLP splicing；
The structural representation of the projection screen that Fig. 2 provides for an embodiment of the present invention；
The structural representation of the sub-screen unit of the projection screen for the offer of an embodiment of the present invention for the Fig. 3.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by it is clear that described embodiment is only a part of embodiment of the present invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that obtained, broadly fall into the scope of protection of the invention.
In a kind of embodiment, the projection screen 1 that an embodiment of the present invention provides, refer to Fig. 2 and figure
3, this projection screen 1, including：
Parallel arrangement of entablature 11 and sill 12；
It is arranged at the screen unit between entablature 11 and sill 12, screen unit is included along entablature 11
Multiple sub-screen units 13 with the arrangement of the bearing of trend of sill 12；Wherein, each sub-screen unit
13 two pieces of transparency carriers 131 including be arrangeding in parallel, it is folded between two pieces of transparency carriers 131 and along upper horizontal stroke
Beam 11 points at least two Fresnel modules 132 of the direction arrangement of sill 12；Each transparency carrier
131 upper end is connected with entablature 11, and bottom is connected with sill 12；
For two pieces of transparency carriers 131 of each sub-screen unit 13 are stretched in entablature 11 and lower horizontal stroke
Tensioner between beam 12.
Multiple sub-screen units 13 of above-mentioned projection screen 1 are along the extension side of entablature 11 and sill 12
To being arranged between parallel arrangement of entablature 11 and sill 12, by tensioner by each height screen
Two pieces of transparency carriers 131 of curtain unit 13 are stretched between entablature 11 and sill 12, and pass through two
At least two luxuriant and rich with fragrance alunites along the direction arrangement pointing to sill 12 from entablature 11 clamped by block transparency carrier 131
That module 132；Therefore, directly arrange between multiple sub-screen units 13 of this projection screen 1, splice structure
Become screen unit, and, at least two Fresnel modules 132 of each sub-screen unit 13 are by two pieces
Transparency carrier 131 sandwiched, the weight of all sub-screen units 13 is transferred to by two pieces of transparency carriers 131
On entablature 11 and sill 12, and all sub-screen units 13 are supported by entablature 11 and sill 12
Weight, so do not need between Fresnel module 132 arrange metal framework be supported, using multipair
Bright substrate instead of the metal framework that existing projection screen 1 is arranged between Fresnel module 132, and because
For eliminating the metal framework being arranged in viewing area, so light path will not be blocked by metal framework, projection
Also blanking bar will not be produced because being provided with metal framework in viewing area on screen 1, and the image of display can be improved
Quality.
Weight due to all sub-screen units 13 transfers to entablature 11 He by two pieces of transparency carriers 131
On sill 12, therefore can cancel and being arranged between sub-screen unit 13 and between Fresnel module 132
Metal framework and attachment structure, its splicing construction is simple.
And, Fresnel module 132 can directly cutting obtains by the screen of bulk, is therefore again spelling
The closure of splicing when connecing, due to not having metal framework edge, can be improved, gap laminating degree improves,
So this projection screen 1 can reduce spliced splicing gap, improve the display of projection screen further
Picture quality.
One kind preferred embodiment in, as shown in Fig. 2 the transparency carrier of each sub-screen unit 13
131 have string configuration, and the long side of transparency carrier 131 is vertical with the bearing of trend of entablature 11.
Further, the length of transparency carrier 131 can be 3m and width can be 1.2m, using above-mentioned
The transparency carrier of size, because size unification, has convenient installation, transport and the good effect of interchangeability.
One kind preferred embodiment, as shown in Figures 2 and 3, each sub-screen unit 13 transparent
It is connected by structural member 133 between substrate 131 and entablature 11 and sill 12, structural member 133 is provided with
Adjustment structure for adjustment structure part 133 length；Meanwhile, structural member 133 is fixed on two pieces of transparency carriers
131 end, makes each sub-screen unit 13 become an overall structure；Therefore, each sub-screen
Unit connects entablature 11 or sill 12 by structural member 133 it is possible to change knot by adjustment structure
The length of component 133, makes structural member 133 can pass through with the distance between entablature 11 or sill 12
Adjustment structure is adjusted, and makes the installation or removal of sub-screen unit 13 become easy, is easy to shorten and installs
Or the time of dismounting, improve the efficiency of installation or removal further；And, by adjustment structure to structural member
The regulation of 133 length, can make the stretching weight bearing situations of each structural member 133 be consistent, make each structural member 133
Stress equalization, it is to avoid each structural member 133 damages because of unbalance stress, can extend the use of projection screen 1
Life-span.
Specifically, adjustment structure can be helicitic texture, by dextrorotation or the derotation elongated structure part respectively of screw thread
133 or the length of shortening structure part 133.
One kind preferred embodiment, each be used for the transparency carrier 131 of connexon screen unit 13 with
By hook and the mounting of multipair mounting cooperation between structural member 133 between entablature 11 and entablature 11
Interface connects；And/or, each transparency carrier 131 being used for connexon screen unit 13 and sill 12
Between structural member 133 and sill 12 between by multipair mounting cooperation hook and mounting interface be connected.
Specifically, hook can be set on structural member, and on entablature 11 and/or sill 12 setting with
The hook corresponding mounting in position interface, during installing, using, make hook on structural member 133 through
Mounting interface on entablature 11 and/or sill 12 and be hooked on entablature 11 and/or sill 12,
Sub-screen unit 13 is made to be connected on entablature 11 and sill 12.Due to sub-screen unit 13 and upper horizontal stroke
Beam 11 and/or sill 12 are coordinated by hook, only need to make hook through entablature 11 and/or sill 12
On mounting interface can achieve and connect, simple and efficiency high is therefore installed.
Preferably, as shown in Figures 2 and 3, in Fresnel module 132, Fresnel Lenses layer 1321 He
Lens pillar layer 1322 stacks together, and is fixed by screw；The outer surface of Fresnel Lenses layer 1321
With one piece of stickup, the outer surface of lens pillar layer 1322 and the two pieces of transparent bases in two pieces of transparency carriers 131
Another piece of stickup in plate 131, and Fresnel module 132 is clamped in two pieces of transparent bases as intermediate layer
In the middle of plate 131.So, in each sub-screen unit 13, each Fresnel module 132 can be by
The weight transmitting of itself is to two pieces of transparency carriers 131, and then it is every in use to reduce projection screen
The Fresnel module 132 being in bottom in one word screen unit 13 receives the Fresnel module above it
132 pressure.
Preferably, entablature 11 and sill 12 are made with metal material, due to using metal material manufacture
Entablature 11 and sill 12, therefore can improve the structural strength of entablature 11 and sill 12, can enter
One step extends the service life of projection screen 1.
Specifically, above-mentioned metal material can be rustless steel, and stainless steel material can improve entablature 11 and lower horizontal stroke
The structural strength of beam 12 is moreover it is possible to make projection screen 1 external form more attractive.
Preferably, as shown in Fig. 2 in the respective embodiments described above provide projection screen in tensioner bag
Include outside screen unit and length-adjustable left column 14 and right column 15, left column 14 and right column
15 are parallel to each other and vertical with entablature 11；One end of left column 14 and right column 15 and entablature 11
Connect, the other end is connected with sill 12.Left column 14 and right column 15 pass through adjustable length to transparent
Substrate 131 carries out tensioning, so that transparency carrier 131 is stretched between entablature 11 and sill 12, and will
Fresnel module 132 is clamped between two pieces of transparency carriers 131, because, during tensioning, it is right only to need
The length of left column 14 and right column 15 is adjusted can achieve, therefore has the simple effect of installation.
Specifically, left column 14 and right column 15 can have stretching structure, left column 14 and right column 15
Length adjustment is realized by stretching structure, and tensioning is carried out to transparency carrier 131.Left column 14 and the right side are stood
Post 15 can be screw rod, be provided with screwed hole corresponding with screw rod, pass through on entablature 11 and sill 12
Screw rod and the screw thread cooperation of screwed hole, can be adjusted to the distance between entablature 11 and sill 12,
And make transparency carrier 131 tensioning being between entablature 11 and sill 12；Due to being coordinated using screw thread,
So having, structure is simple, adjust easy effect.
Preferably, the tensioner in above-mentioned projection screen film can also be for consolidating that sill 12 is connected
Determine base；Specifically, the structures such as hook can be provided with firm banking, and be provided with sill 12 with
The rope that hook connects, when by between the rope stretch entablature 11 on sill 12 and sill 12
Fasten on the hook of firm banking after transparency carrier 131, and then by between entablature 11 and sill 12
Transparency carrier 131 tensioning；It is, of course, also possible to be that rope winding roller is provided with firm banking, by rotation
Turn rope winding roller and adjust the tensile force to transparency carrier 131 for the rope, there is installation and adjust simple, quick
Effect.
Specifically, firm banking may be provided on floor or wall, and entablature can be fixed on ceiling or wall
On.
In a kind of specific embodiment, as shown in Fig. 2 projection screen provided in an embodiment of the present invention 1 can wrap
Include：Parallel arrangement of entablature 11 and sill 12；It is arranged between entablature 11 and sill 12
Screen unit, each screen unit includes four of the bearing of trend arrangement along entablature 11 and sill 12
Individual sub- screen unit 13, certainly, concrete size of quantity of sub-screen unit 13 that screen unit has etc. is also
Specifically can be arranged according to the preparation technology of the actual size of screen unit and sub-screen unit 13, as long as energy
Enough it is easy to the transport of sub-screen unit 13 and assemble；Wherein, each sub-screen unit 13 includes putting down
Row setting two pieces of transparency carriers 131, be folded between two pieces of transparency carriers 131 and point to along entablature 11
Three Fresnel modules 132 of the direction arrangement of sill 12, are provided with each sub-screen unit 13
The quantity of Fresnel module 132 can determine according to the actual production technique of Fresnel module 132, certainly,
In order to ensure two transparency carriers 131 in each sub-screen unit 13 to 132 groups of each Fresnel module
The stability of dress, under reduction projection screen is using being in each of process sub-screen unit 13 simultaneously
The pressure that the Fresnel module 132 of side is subject to, the Fresnel module being provided with each sub-screen unit 13
132 quantity can not be too many, preferably three；In above-mentioned projection screen, the left side as tensioner is stood
Post 14 and right column 15 are preferably stretching structure, when upper end and the entablature of each transparency carrier 131
11 connect and after bottom is connected with sill 12, the length of regulation left column 14 and right column 15,
And then two pieces of transparency carriers 131 of six sub- screen units 13 are stretched in entablature 11 and sill 12
Between, realize the installation to each sub-screen unit 13.
Four sub- screen units 13 of above-mentioned projection screen 1 are along the extension side of entablature 11 and sill 12
To being arranged between parallel arrangement of entablature 11 and sill 12, by tensioner by each height screen
Two pieces of transparency carriers 131 of curtain unit 13 are stretched between entablature 11 and sill 12, and pass through two
Three Fresnel moulds along the direction arrangement pointing to sill 12 from entablature 11 clamped by block transparency carrier 131
Group 132；Therefore, directly arrange between four of this projection screen 1 sub- screen units 13, be spliced to form screen
Curtain unit, and, three Fresnel modules 132 of each sub-screen unit 13 are by two pieces of transparency carriers
131 sandwicheds, the weight of all sub-screen units 13 transfers to entablature 11 by two pieces of transparency carriers 131
On sill 12, and supported the weight of all sub-screen units 13 by entablature 11 and sill 12,
So not needing setting metal framework to be supported, using four to transparency carrier between Fresnel module 132
It is arranged on the metal framework between Fresnel module 132 in the 131 existing projection screens 1 of replacement, and because
Eliminate the metal framework being arranged in viewing area, so the light path in projection for the projector equipment will not be golden
Belong to framework to block, projection screen 1 also will not produce blanking bar because being provided with metal framework in viewing area, and
The picture quality of display can be improved.
Obviously, those skilled in the art can carry out various changes and modification and not take off to the embodiment of the present invention
From the spirit and scope of the present invention.So, if these modifications of the present invention and modification belong to right of the present invention
Within the scope of requirement and its equivalent technologies, then the present invention is also intended to comprise these changes and modification.
Claims (9)
1. a kind of projection screen is it is characterised in that include：
Parallel arrangement of entablature and sill；
It is arranged at the screen unit between described entablature and sill, described screen unit is included along on described
Multiple sub-screen units of the bearing of trend arrangement of crossbeam and sill；Wherein, each described sub-screen list
Unit include be arranged in parallel two pieces of transparency carriers, be folded between two pieces of described transparency carriers and along described upper horizontal stroke
Beam points at least two Fresnel modules of the direction arrangement of described sill；Each described transparency carrier
Upper end is connected with described entablature, and bottom is connected with described sill；
For by described two pieces of transparency carriers of each described sub-screen unit be stretched in described entablature and
Tensioner between sill.
2. projection screen according to claim 1 is it is characterised in that each described sub-screen list
The transparency carrier of unit has string configuration, and the extension of the long side of described transparency carrier and described entablature
Direction is vertical.
3. projection screen according to claim 2 is it is characterised in that described transparency carrier is strip
Shape glass.
4. projection screen according to claim 2 is it is characterised in that each described sub-screen list
The described transparency carrier of unit is connected by structural member between described entablature and sill, described structural member
It is provided with the adjustment structure for adjusting described structural member length.
5. projection screen according to claim 4 it is characterised in that each be used for connecting described
Pass through multipair extension between structural member between the transparency carrier of sub-screen unit and entablature and described entablature
Connect the hook of cooperation and mounting interface connects；And/or,
Each is used for connecting structural member and the institute between the transparency carrier of described sub-screen unit and sill
State the hook passing through multipair mounting cooperation between sill and mounting interface connects.
6. projection screen according to claim 1 is it is characterised in that in described Fresnel module,
Described Fresnel Lenses layer and lens pillar are laminated together, and are fixed by screw；Described Fresnel is saturating
In the outer surface of mirror layer and two pieces of described transparency carriers one piece stickup, the outer surface of described lens pillar layer with
In two pieces of described transparency carriers another piece is pasted, and described Fresnel module is clamped in as intermediate layer
In the middle of two pieces of described transparency carriers.
7. projection screen according to claim 1 is it is characterised in that described entablature and sill
Made with metal material.
8. the projection screen according to any one of claim 1 to 7 is it is characterised in that described tensioning
Device includes outside described screen unit and length-adjustable left column and right column, described left column and
Right column is parallel to each other and vertical with described entablature；One end of described left column and right column with described on
Crossbeam connects, and the other end is connected with described sill.
9. the projection screen according to any one of claim 1 to 7 is it is characterised in that described tensioning
Device is the firm banking for being connected with sill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552209.3A CN106483754B (en) | 2015-09-01 | 2015-09-01 | A kind of projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510552209.3A CN106483754B (en) | 2015-09-01 | 2015-09-01 | A kind of projection screen |
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| Publication Number | Publication Date |
|---|---|
| CN106483754A true CN106483754A (en) | 2017-03-08 |
| CN106483754B CN106483754B (en) | 2019-02-12 |
Family
ID=58237798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510552209.3A Active CN106483754B (en) | 2015-09-01 | 2015-09-01 | A kind of projection screen |
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| Country | Link |
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| CN (1) | CN106483754B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111050098A (en) * | 2018-10-12 | 2020-04-21 | 青岛海尔多媒体有限公司 | Laser television |
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| CN2326982Y (en) * | 1998-02-13 | 1999-06-30 | 李一新 | Multifunction screen |
| CN2681172Y (en) * | 2004-02-27 | 2005-02-23 | 北京东方虹景科技有限公司 | Splicing structure for one row multiple column large screen projection display wall |
| CN1687845A (en) * | 2005-06-15 | 2005-10-26 | 梁坚平 | Zipper type ultra-large split width high-brightness projection screen |
| CN2752813Y (en) * | 2004-12-10 | 2006-01-18 | 广东威创日新电子有限公司 | Seamless split large screen projector |
| CN2789809Y (en) * | 2005-05-23 | 2006-06-21 | 珠海优特电力科技股份有限公司 | Combined curtain for projection |
| CN1815358A (en) * | 2005-02-01 | 2006-08-09 | 精碟科技股份有限公司 | Micro display device screen and its column type lens plate |
| CN201569847U (en) * | 2009-12-28 | 2010-09-01 | 上海晶瑞计算机科技有限公司 | Seamless inner split joint composite glass display screen |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2326982Y (en) * | 1998-02-13 | 1999-06-30 | 李一新 | Multifunction screen |
| CN2681172Y (en) * | 2004-02-27 | 2005-02-23 | 北京东方虹景科技有限公司 | Splicing structure for one row multiple column large screen projection display wall |
| CN2752813Y (en) * | 2004-12-10 | 2006-01-18 | 广东威创日新电子有限公司 | Seamless split large screen projector |
| CN1815358A (en) * | 2005-02-01 | 2006-08-09 | 精碟科技股份有限公司 | Micro display device screen and its column type lens plate |
| CN2789809Y (en) * | 2005-05-23 | 2006-06-21 | 珠海优特电力科技股份有限公司 | Combined curtain for projection |
| CN1687845A (en) * | 2005-06-15 | 2005-10-26 | 梁坚平 | Zipper type ultra-large split width high-brightness projection screen |
| CN201569847U (en) * | 2009-12-28 | 2010-09-01 | 上海晶瑞计算机科技有限公司 | Seamless inner split joint composite glass display screen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111050098A (en) * | 2018-10-12 | 2020-04-21 | 青岛海尔多媒体有限公司 | Laser television |
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| Publication number | Publication date |
|---|---|
| CN106483754B (en) | 2019-02-12 |
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