CN107065417A - Mosaic screen and back projection unit - Google Patents
Mosaic screen and back projection unit Download PDFInfo
- Publication number
- CN107065417A CN107065417A CN201710434033.0A CN201710434033A CN107065417A CN 107065417 A CN107065417 A CN 107065417A CN 201710434033 A CN201710434033 A CN 201710434033A CN 107065417 A CN107065417 A CN 107065417A
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- CN
- China
- Prior art keywords
- screen
- mosaic screen
- cambered surface
- mosaic
- photomask
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/54—Accessories
- G03B21/56—Projection screens
- G03B21/60—Projection screens characterised by the nature of the surface
- G03B21/602—Lenticular screens
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Overhead Projectors And Projection Screens (AREA)
Abstract
The invention discloses a kind of mosaic screen and back projection unit, belong to display technology field.The mosaic screen includes：The screen of photomask and multiple array arrangements, the photomask is used to prevent screen side emergent ray；At the neighboring edge of the adjacent screen of each two, the side close to exiting surface is provided with cambered surface.By at the neighboring edge of the adjacent screen of each two, cambered surface is set close to the side of exiting surface so that splicing has beam projecting at gap, it is to avoid the discontinuity that mosaic screen occurs in display image, and then so that the display effect of mosaic screen is preferable.The present invention is used in the mosaic screen with back projection unit.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of mosaic screen and back projection unit.
Background technology
Projection mosaic display screen, also referred to as mosaic screen, are that multi-screen image is stitched together, and then realize jumbotron superelevation
The image of resolution ratio is shown.
Fig. 1 is refer to, Fig. 1 is a kind of structural representation for mosaic screen that prior art is provided, and the mosaic screen is by multiple
Back projection unit 11 closely splices composition, there is a splicing gap 12 between two neighboring back projection unit 11.Wherein, often
Individual back projection unit 11 can include projector 111, screen 112 and fixed support 113, and the screen 112 can be Fresnel light
Screen is learned, the Fresnel optical panel can include：Fresnel Lenses layer 112b and lens pillar layer 112a.In each back projection unit
In 11, the light that projector 111 sends is through outgoing, but projector after Fresnel Lenses layer 112b and lens pillar layer 112a
111 some lights sent, by splicing the outgoing of gap 12, can't pass through lens pillar layer by Fresnel Lenses layer 112b
112a, therefore the light of outgoing can be very bright at splicing gap 12, in order to avoid the brightness irregularities of mosaic screen, it usually needs
The black pad pasting for absorbing the light being incident upon at splicing gap 12 is pasted at splicing gap 12.
During the present invention is realized, inventor has found that prior art at least has problems with：
A plurality of black line can be formed due to needing to set at black pad pasting, the splicing gap of mosaic screen, causes mosaic screen aobvious
Diagram as when discontinuity occurs, and then cause the display effect of mosaic screen poor.
The content of the invention
In order to which discontinuity occurs in display image in the mosaic screen for solving prior art, the display of mosaic screen is caused to be imitated
Really poor the problem of, the embodiments of the invention provide a kind of mosaic screen and back projection unit.The technical scheme is as follows：
First aspect there is provided a kind of mosaic screen, including：
The screen of photomask and multiple array arrangements, the photomask is used to prevent screen side emergent ray；
At the neighboring edge of the adjacent screen of each two, the side close to exiting surface is provided with cambered surface.
Optionally, the edge of the screen is additionally provided with the plane being connected with the cambered surface, the plane and is provided with
The photomask.
Optionally, the photomask is arranged on the edge of the incidence surface of the screen.
Optionally, the mosaic screen also includes：Filled media；
The filled media is arranged in the groove of the adjacent cambered surface formation of each two；
The refractive index of the filled media is more than the refractive index of air, and less than the refractive index of the screen.
Optionally, the filled media is transparent filled media.
Optionally, the transparent filled media is optical cement.
Optionally, the radian n of the cambered surface is met：45 degree≤n≤90 degree.
Optionally, the screen is Fresnel optical panel, and the Fresnel optical panel includes：Fresnel Lenses layer and column
Lens jacket；
The cambered surface is arranged on the edge of the lens pillar layer, and the photomask is arranged on the Fresnel Lenses layer
Side.
Optionally, the mosaic screen also includes：Light-transmitting resin layer and fixed support；
The light-transmitting resin layer is arranged on the exiting surface of the screen, and the fixed support is used to support the screen.
Second aspect there is provided a kind of back projection unit, including：
Projector and screen；
The edge of the screen is provided with cambered surface close to the side of exiting surface.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
Mosaic screen and back projection unit provided in an embodiment of the present invention, pass through the neighboring edge in the adjacent screen of each two
Place, the cambered surface set close to the side of exiting surface, some light that projector sends dissipates after the cambered surface so that splicing seams
There is beam projecting at gap, it is to avoid black line is formed at the splicing gap of mosaic screen, so as to avoid mosaic screen in display image
The discontinuity of appearance, and then make it that the display effect of mosaic screen is preferable
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of structural representation for mosaic screen that prior art is provided；
Fig. 2-1 is a kind of structural representation of mosaic screen provided in an embodiment of the present invention；
Fig. 2-2 is the index path for the mosaic screen that Fig. 2-1 is provided；
Fig. 3-1 is a kind of structural representation for mosaic screen that another embodiment of the present invention is provided；
Fig. 3-2a are the structural representations for another mosaic screen that another embodiment of the present invention is provided；
Fig. 3-2b are the structural representations for another mosaic screen that another embodiment of the present invention is provided；
Fig. 4-1 is a kind of structural representation for mosaic screen that further embodiment of this invention is provided；
Fig. 4-2 is the index path that Fig. 4-1 provides mosaic screen；
Fig. 5-1 is a kind of structural representation of screen provided in an embodiment of the present invention；
Fig. 5-2 is a kind of structural representation for mosaic screen that yet another embodiment of the invention is provided.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiment of the present invention provides a kind of mosaic screen, and as shown in Fig. 2-1, Fig. 2-1 is one kind provided in an embodiment of the present invention
The structural representation of mosaic screen, the mosaic screen can include：
The screen 22 of photomask 10 and multiple array arrangements, the photomask is used for the light for preventing the side outgoing of screen 22.
At the neighboring edge of the adjacent screen 22 of each two, the side close to exiting surface A is provided with cambered surface 221.It is actual to answer
In, the adjacent non-conterminous edge of screen 22 of each two is not provided with cambered surface 221, that is to say, with the coincident of mosaic screen
The edge of screen 22 is not provided with cambered surface 221.
In embodiments of the present invention, mosaic screen can include：The back projection unit 20 of multiple array arrangements, each back projection
Unit 20 can include：Projector 21, screen 22, fixed support 23 and bulge-structure 24, the fixed support 23 are used to support and shielded
Curtain 22, the adjacent back projection unit 20 of each two in mosaic screen is mutually abutted, can be adjacent by each two in practical application
Fixed support 23 mutually abut, to realize the mutual abutting of the adjacent back projection unit 20 of each two.
It should be noted that the mutual abutting of the adjacent back projection unit 20 of each two can also be by it in practical application
He mode realizes that the embodiment of the present invention is not repeated this.It should be noted that be, although the adjacent fixed support 23 of each two can
To realize abutting, but because machinery abutting can not eliminate splicing gap, when being amplified to certain multiple at splicing gap, still
It can be seen that splicing gap, therefore two fixed supports 23 mutually abutted can not eliminate splicing gap, each two is adjacent
There is splicing gap 30 between back projection unit 20.
Conventionally, as needing to paste at splicing gap for absorbing the light being incident upon at splicing gap
There is no beam projecting at black pad pasting, therefore splicing gap, and then a plurality of black line can be formed at the splicing gap of mosaic screen.
And in embodiments of the present invention, refer to the index path that Fig. 2-2, Fig. 2-2 is the mosaic screen that Fig. 2-1 is provided, projection
The some light a that machine is sent is blocked film and blocked, it is to avoid light a is injected and its phase after the side outgoing of back projection unit
Cause the display effect of mosaic screen poor when in adjacent back projection unit；The some light b that projector sends is equal after cambered surface
Even diverging so that have beam projecting at splicing gap, and then user is can see when watching mosaic screen from splicing gap
The light of outgoing, it is to avoid black line is formed at the splicing gap of mosaic screen.
In summary, mosaic screen provided in an embodiment of the present invention, by the neighboring edge of the adjacent screen of each two,
The cambered surface set close to the side of exiting surface, some light that projector sends dissipates after the cambered surface so that splicing gap
There is beam projecting at place, it is to avoid black line is formed at the splicing gap of mosaic screen, is gone out so as to avoid mosaic screen in display image
Existing discontinuity, and then make it that the display effect of mosaic screen is preferable.
Optionally, the radian n of cambered surface is met：45 degree≤n≤90 degree.The radian of cambered surface is bigger, by the light of the cambered surface
Diverging ability it is stronger；The radian of cambered surface is smaller, and the diverging ability of the light by the cambered surface is weaker, now splices at gap
Light compares concentration.It is weaker by the diverging ability of cambered surface light when the radian of cambered surface is 45 degree, now splice and penetrated at gap
The brightness that the light entered compares at concentration, therefore splicing gap is higher, but the brightness of the edge in splicing gap is relatively low.Work as cambered surface
Radian be 90 degree when, it is stronger by the diverging ability of cambered surface light, now splice gap at inject light degree of divergence
It is relatively strong, therefore the brightness at splicing gap is relatively low, but the brightness of the edge in splicing gap can be improved.
In practical application, the edge of screen can be provided only with cambered surface, can also not only set cambered surface but also be provided with plane,
Because screen side view is different, the mode of the set location of the photomask in mosaic screen is also corresponding different.
For example, when image sharpness is provided only with cambered surface, refer to Fig. 3-1, Fig. 3-1 is that another embodiment of the present invention is carried
A kind of structural representation of the mosaic screen supplied, photomask 10 can set the incidence surface B edges of screen 22, and then can prevent
The light that projector 21 sends is from the side outgoing of back projection unit 20.
When image sharpness had not only been provided with cambered surface but also being provided with plane, the set location of the photomask in the mosaic screen has
Following two achievable modes：
In the first can realize mode, as shown in Fig. 3-2a, Fig. 3-2a are the another of another embodiment of the present invention offer
The structural representation of mosaic screen is planted, the cambered surface 221 that the edge of screen 22 is set is connected with plane 222, and photomask 10 can be set
Put in plane 222, and then the light that projector 21 sends can be prevented from the side outgoing of back projection unit 20.
In second of achievable mode, as shown in Fig. 3-2b, Fig. 3-2b are the another of another embodiment of the present invention offer
The structural representation of mosaic screen is planted, the cambered surface 221 that the edge of screen 22 is set is connected with plane 222, and photomask 10 can be set
The incidence surface B edges of screen 22 are put, and then the light that projector 21 sends can be prevented from the side outgoing of back projection unit 20.
Optionally, it refer to the structural representation that Fig. 4-1, Fig. 4-1 is a kind of mosaic screen that further embodiment of this invention is provided
Figure, the mosaic screen also includes：Filled media 40；The adjacent cambered surface 221 of each two can form groove, can be set in the groove
There is filled media 40, the refractive index of the filled media 40 is more than the refractive index of air, and less than the refractive index of screen 22, Jin Erke
So that light produces refraction in filled media 40.
On the one hand, some light that projector 21 sends can dissipate after cambered surface 221, and then cause back projection unit 20
The image that edge is shown can slightly amplify, but the magnification level of image is smaller, the amplification quantity of the figure shown at splicing gap 30
Less than one pixel, human eye can be ignored, and be reflected when light is produced by filled media 40, make more light in splicing gap 30
Center is assembled, so as to improve the brightness at splicing gap 30, is more beneficial for visually eliminating splicing gap 30, and then make
The effect for obtaining mosaic screen display image is preferable.
On the other hand, if without filled media, some light that projector 21 sends dissipates after cambered surface 221, makes
Obtaining the light dissipated in the edge of cambered surface 221 may inject in cambered surface 221 adjacent thereto；When to groove setting filled media
When 40, refer to Fig. 4-2, Fig. 4-2 is the index path that Fig. 4-1 provides mosaic screen, and light produces refraction in filled media 40, made
Obtaining the light dissipated in the edge of cambered surface 221 will not inject in cambered surface 221 adjacent thereto, and then cause mosaic screen display image
Effect it is preferable.Therefore, when the groove in mosaic screen sets filled media, the effect of the mosaic screen display image can be caused
Preferably.
Optionally, filled media can be transparent medium, or translucent medium.When filled media is transparent medium
When, the filled media can be optical cement, for example, the filled media can be acrylic acid, urethanes or poly- methyl
Methyl acrylate (English：Polymethyl Methacrylate；Referred to as：PMMA).
In embodiments of the present invention, it refer to the structure that Fig. 5-1, Fig. 5-1 is a kind of screen provided in an embodiment of the present invention
Schematic diagram, the screen 22 can be that screen is Fresnel optical panel, and the Fresnel optical panel can include：Fresnel Lenses layer
223 and lens pillar layer 224, the light that projector 21 sends sequentially pass through Fresnel Lenses layer 223 and lens pillar layer 224 after
Outgoing.
It refer to the structural representation that Fig. 5-2, Fig. 5-2 is a kind of mosaic screen that yet another embodiment of the invention is provided, cambered surface
221 can be arranged on the edge of lens pillar layer 224, and photomask 20 is arranged on the side of Fresnel Lenses layer 223.
Optionally, as shown in Fig. 5-2, back projection unit 20 also includes：Light-transmitting resin layer 24, the light-transmitting resin layer 24 is set
On the exiting surface A of screen, the light-transmitting resin layer 24 can protect screen 22, it is to avoid screen 22 is scratched；The light-transmitting resin layer
24 also act as the effect to divergence of beam, and then can increase the visible angle of mosaic screen.
In summary, mosaic screen provided in an embodiment of the present invention, by the neighboring edge of the adjacent screen of each two,
The cambered surface set close to the side of exiting surface, some light that projector sends dissipates after the cambered surface so that splicing gap
There is beam projecting at place, it is to avoid black line is formed at the splicing gap of mosaic screen, is gone out so as to avoid mosaic screen in display image
Existing discontinuity, and then make it that the display effect of mosaic screen is preferable.
The embodiment of the present invention also provides a kind of back projection unit, and the back projection unit can be the mosaic screen shown in Fig. 2-1
In back projection unit 20, the back projection unit can include：
Projector and screen；The edge of the screen is provided with cambered surface close to the side of exiting surface.
Optionally, the edge of the screen is additionally provided with the plane being connected with the cambered surface.
Optionally, the radian n of the cambered surface is met：45 degree≤n≤90 degree.
Optionally, screen is Fresnel optical panel, and Fresnel optical panel includes：Fresnel Lenses layer and lens pillar layer；
Cambered surface is arranged on the edge of lens pillar layer, and photomask is arranged on the side of Fresnel Lenses layer.
Optionally, the back projection unit also includes：Light-transmitting resin layer and fixed support；Light-transmitting resin layer is arranged on screen
On exiting surface, fixed support is used to support screen.
On the back projection unit in above-described embodiment, the wherein structure of back projection unit and function is in above-mentioned mosaic screen
It is described in detail, will not repeats herein in embodiment.
In summary, back projection unit provided in an embodiment of the present invention, by the edge of screen close to exiting surface
Side sets cambered surface, and some light that projector sends dissipates after the cambered surface, splices when being made using the back projection unit
During screen, there is beam projecting at the splicing gap in the mosaic screen, it is to avoid black line is formed at the splicing gap of mosaic screen, so that
The discontinuity that mosaic screen occurs in display image is avoided, and then make it that the display effect of mosaic screen is preferable.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of mosaic screen, it is characterised in that including：
The screen of photomask and multiple array arrangements, the photomask is used to prevent screen side emergent ray；
At the neighboring edge of the adjacent screen of each two, the side close to exiting surface is provided with cambered surface.
2. mosaic screen according to claim 1, it is characterised in that
The edge of the screen is additionally provided with the plane being connected with the cambered surface, the plane and is provided with the photomask.
3. mosaic screen according to claim 1, it is characterised in that
The photomask is arranged on the edge of the incidence surface of the screen.
4. mosaic screen according to claim 1, it is characterised in that
The mosaic screen also includes：Filled media；
The filled media is arranged in the groove of the adjacent cambered surface formation of each two；
The refractive index of the filled media is more than the refractive index of air, and less than the refractive index of the screen.
5. mosaic screen according to claim 4, it is characterised in that the filled media is transparent filled media.
6. mosaic screen according to claim 5, it is characterised in that the transparent filled media is optical cement.
7. mosaic screen according to claim 1, it is characterised in that
The radian n of the cambered surface is met：45 degree≤n≤90 degree.
8. mosaic screen according to claim 1, it is characterised in that
The screen is Fresnel optical panel, and the Fresnel optical panel includes：Fresnel Lenses layer and lens pillar layer；
The cambered surface is arranged on the edge of the lens pillar layer, and the photomask is arranged on the side of the Fresnel Lenses layer
Face.
9. according to any described mosaic screen of claim 1 to 8, it is characterised in that
The mosaic screen also includes：Light-transmitting resin layer and fixed support；
The light-transmitting resin layer is arranged on the exiting surface of the screen, and the fixed support is used to support the screen.
10. a kind of back projection unit, it is characterised in that including：
Projector and screen；
The edge of the screen is provided with cambered surface close to the side of exiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434033.0A CN107065417A (en) | 2017-06-09 | 2017-06-09 | Mosaic screen and back projection unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710434033.0A CN107065417A (en) | 2017-06-09 | 2017-06-09 | Mosaic screen and back projection unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107065417A true CN107065417A (en) | 2017-08-18 |
Family
ID=59594787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710434033.0A Pending CN107065417A (en) | 2017-06-09 | 2017-06-09 | Mosaic screen and back projection unit |
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| CN (1) | CN107065417A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108055498A (en) * | 2018-01-19 | 2018-05-18 | 深圳市乐华数码科技有限公司 | A kind of display camera shooting equipment integrating for remote true video conference |
| CN109901249A (en) * | 2017-12-08 | 2019-06-18 | 胡崇铭 | The display equipment and light emitting device of optical diaphragm module and Application Optics membrane module |
| CN111128009A (en) * | 2018-10-31 | 2020-05-08 | 咏巨科技有限公司 | Display device and lens structure thereof |
| CN111963856A (en) * | 2020-08-05 | 2020-11-20 | 浙江德广信电子科技股份有限公司 | High-refresh high-gray-scale small-space spliced LED display screen |
| TWI728786B (en) * | 2020-04-22 | 2021-05-21 | 群創光電股份有限公司 | Electronic device |
| WO2021134741A1 (en) * | 2020-01-02 | 2021-07-08 | 康佳集团股份有限公司 | Method for improving bright line of splicing seam of display screen |
| US11664354B2 (en) | 2020-04-22 | 2023-05-30 | Innolux Corporation | Electronic device |
-
2017
- 2017-06-09 CN CN201710434033.0A patent/CN107065417A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109901249A (en) * | 2017-12-08 | 2019-06-18 | 胡崇铭 | The display equipment and light emitting device of optical diaphragm module and Application Optics membrane module |
| CN108055498A (en) * | 2018-01-19 | 2018-05-18 | 深圳市乐华数码科技有限公司 | A kind of display camera shooting equipment integrating for remote true video conference |
| CN111128009A (en) * | 2018-10-31 | 2020-05-08 | 咏巨科技有限公司 | Display device and lens structure thereof |
| WO2021134741A1 (en) * | 2020-01-02 | 2021-07-08 | 康佳集团股份有限公司 | Method for improving bright line of splicing seam of display screen |
| TWI728786B (en) * | 2020-04-22 | 2021-05-21 | 群創光電股份有限公司 | Electronic device |
| US11664354B2 (en) | 2020-04-22 | 2023-05-30 | Innolux Corporation | Electronic device |
| CN111963856A (en) * | 2020-08-05 | 2020-11-20 | 浙江德广信电子科技股份有限公司 | High-refresh high-gray-scale small-space spliced LED display screen |
| CN111963856B (en) * | 2020-08-05 | 2022-04-12 | 浙江德广信电子科技股份有限公司 | High-refresh high-gray-scale small-space spliced LED display screen |
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Application publication date: 20170818 |