CN103313014A - PDLC (polymer dispersed liquid crystal) transparent projection display device - Google Patents
PDLC (polymer dispersed liquid crystal) transparent projection display device Download PDFInfo
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- CN103313014A CN103313014A CN2013102403074A CN201310240307A CN103313014A CN 103313014 A CN103313014 A CN 103313014A CN 2013102403074 A CN2013102403074 A CN 2013102403074A CN 201310240307 A CN201310240307 A CN 201310240307A CN 103313014 A CN103313014 A CN 103313014A
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- 239000004983 Polymer Dispersed Liquid Crystal Substances 0.000 title claims abstract description 102
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- 238000004891 communication Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 201000009310 astigmatism Diseases 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
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- 238000007639 printing Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
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- 238000000149 argon plasma sintering Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
A PDLC (polymer dispersed liquid crystal) transparent projection display device comprises at least one PDLC transparent display screen, projectors corresponding to the PDLC transparent display screens in number, and a video generation device. Compared with the prior art, the PDLC transparent projection display device has the advantages that a complex driving circuit and an extra backlight source are not needed by the PDLC transparent display screens for image display, so that the display device is simple to operate, energy-saving, environment-friendly, long in service life and the like; different number combinations of the PDLC transparent display screens and the projectors are designed, so that the display device can have a function of multi-image display.
Description
Technical field
The present invention relates to middle large display device field, the transparent projection display equipment of especially a kind of PDLC.
Background technology
Along with the development of Display Technique, its application surface is more and more wider, and size is done larger and larger, and the particularly at present application on building, decoration, showcase and outdoor billboard is to all having increased requirement in size, outward appearance and useful life etc. of display device.
At present main flow be used for outdoor advertising, building outdoor display, the giant display spare that indoor product introduction is used comprises: electronics full color display, LCDs, turning plane advertising plate, led array color screen etc.Wherein, the cost of electronics full color display and LCDs can present giant's amplification along with the increase of size, and when reaching 100 cun such as the size when the electronics full color display, its price often will reach about hundreds of thousands even 1,000,000.And this type of display device is on the large scale manufacture craft, there is certain problem, such as the driving problems of large-sized liquid crystal display, can has the problems such as delay of front and back, one-way road pixel, the power consumption of this class display is also often large than regular display in addition, does not meet advocating of energy-saving and emission-reduction.
And turning plane advertising plate can only show tableaux, and the by turns width of cloth number of tableaux is also very limited, and play content is dull, can't be used for carrying out the advertising of large information.
The led array color screen can be used for manufactured size and surpass 100 cun display device.Yet the drive circuit relative complex of led array color screen is also relatively slightly poor for the display capabilities of dynamic menu, be mainly reflected in color distortion, picture postpone higher, the pixel granular sensation is too strong etc.In addition for the led array color screen, decide on the life-span of each LED its useful life, and under intensive work time and outdoor adverse circumstances, the working life of LED is shorter, downright bad LED often occurs, thereby so that the problems such as bright spot, dim spot or concealed wire appear in the color screen of whole led array.
Therefore in existing large-scale outdoor display spare field, also do not have a kind of low-cost budget that both met, higher display effect can be arranged again and produce than the scheme of long service live.
Summary of the invention
In view of this, the object of the invention is to propose the transparent projection display equipment of a kind of PDLC, this display unit has display effect simple in structure, with low cost, good and reliable performance as a kind of new large-scale display device that can be used as the open air.
The transparent projection display equipment of a kind of PDLC according to purpose proposition of the present invention, comprise at least one PDLC transparent display screen, the projecting apparatus corresponding with described PDLC transparent display screen quantity, and video generating apparatus, described projecting apparatus is connected transmission of video interface or wireless communication module and connects with the video generating apparatus, described PDLC transparent display screen is arranged on the focal plane of described projecting apparatus.
Preferably, to satisfy projector projects to the distance of described PDLC transparent display screen just in time identical with the viewing area of PDLC transparent display screen to the picture size on the PDLC transparent display screen for described projecting apparatus.
Preferably, also comprise main body frame, described projecting apparatus and PDLC transparent display screen are made in this main body frame.
Preferably, described main body frame is the solid geometry framework, and described PDLC is arranged on the main facade of this solid geometry framework, and described projecting apparatus is placed on this solid geometry framework inside on the direction of main facade.
Preferably, the quantity of described PDLC transparent display screen is greater than 1, and these PDLC transparent display screens are arranged on the different side elevations of described main body frame, forms the picture disply to all directions.
Preferably, described video generating apparatus is PC, DVD, VCD or MP4.
Preferably, described projecting apparatus is LCD projecting apparatus, DLP projecting apparatus or CRT projecting apparatus.
Preferably, the surface of described PDLC transparent display screen is curved surface.
Compared with prior art, technical advantage of the present invention is:
First: use the combination of video generating apparatus+projecting apparatus, solve the problem of video source, so that the output of video has stable and high-quality characteristic;
Second: use PDLC as transparent display screen, need not complicated drive circuit and extra backlight, have that control is simple, characteristics such as energy-conserving and environment-protective, with low cost, long service life;
The 3rd: the combination of PDLC transparent display screen and projecting apparatus is flexible and changeable, can be designed to as required that multiaspect shows or other forms, such as the display unit of curved surface etc., has improved the using value of display unit.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the transparent projection display equipment of PDLC of first embodiment of the invention.
Fig. 2 is the various shape schematic diagrames of PDLC transparent display screen of the present invention.
Fig. 3 is the structural representation of the transparent projection display equipment of PDLC of first embodiment of the invention.
Embodiment
Just as described in the background art, in more existing giant display spares, electronics full color display and LCDs are because the manufacture craft difficulty is large, with high costs, product quality problem easily occurs, and the power consumption of large-screen is serious, does not meet the requirement of energy-conserving and environment-protective.And the led array color screen, because drive circuit is complicated, picture display effect is poor, and the life-span of LED is relatively short, the situation of bad point or bad line often appears in product, brings impact for the application of led array color screen.
Therefore, the present invention proposes the transparent projection display equipment of a kind of PDLC.This display unit is take common video pictures generating apparatus as video source, take projecting apparatus as the picture transfer mechanism, take PDLC as display screen.Have simple in structurely, the picture disply quality is high, simultaneously for different outward appearance demands, the PDLC display screen can be made into different shapes, satisfies the diversity requirement of attractive in appearance, flexible for installation and display effect.By application of the present invention, will provide a kind of brand-new technical solution to demonstration field, open air, so that the practicality of large-scale outdoor display screen improves greatly.
Below, will be described in detail technical scheme of the present invention.
See also Fig. 1, Fig. 1 is the structural representation of the transparent projection display equipment of PDLC under the first embodiment of the invention.As shown in the figure, the transparent projection display equipment 1 of this PDLC comprises PDLC transparent display screen 10, projecting apparatus 20, and video generating apparatus 30.Wherein, this PDLC transparent display screen 10 and projecting apparatus 20 are made in the main body frame 100 of this display unit 1, and this main body frame 100 has different design flexibilitys for different application scenarios.For example when transparent projection display equipment of the present invention is used as outdoor advertising display at building, this main body frame 100 can be in conjunction with exterior wall and the inner intrinsic building structure of building, such as PDLC transparent display screen 10 is installed on the external wall, projecting apparatus 20 is positioned over interior of building.Again for example when transparent projection display equipment of the present invention is used in exhibition room as the exhibition display unit, this main body frame 100 can be designed to the solid geometry frameworks such as a kind of cuboid, square, cylinder, PDLC transparent display screen 10 is installed on the main facade of these solid geometry frameworks, projecting apparatus 20 is placed on framework inside on the direction of main facade, thereby forms effective projection mechanism.Should be understood that, the major function of this main body frame 100 is to provide that PDLC transparent display screen 10 of the present invention and 20 1 of projecting apparatus can be installed, fixing and device that a reliability service environment is provided for the work of these two parts, when using out of doors, this main body frame 100 will satisfy the reliability design of the basic demand such as leaking informaton, rainproof, sun-proof, dustproof and then carrying out usually.And in outdoor utility, this main body frame 100 satisfies firmly again simultaneously, size to fit and the requirement such as attractive in appearance.As for key elements such as the shape of this main body frame 100, structures, then can make different application scenarios, carry out the flexibility design in conjunction with current environment, be not to be fixing framework.
Video generating apparatus 30 can be the video playback devices such as PC, DVD, VCD, MP4.Be provided preferably with the transmission of video interface on this video generating apparatus 30, such as HDMI interface, VGA interface, USB interface etc., projecting apparatus 20 is provided with corresponding video input interface, and both connect by these transmission of video interfaces, carry out video playback.Perhaps video generating apparatus 30 and projecting apparatus are provided with wireless communication module, carry out video data transmitting by wireless communication module, reach the purpose that makes the projecting apparatus displaying video.This video generating apparatus 30 can be arranged on main body frame 100 inside, this moment can be with the transparent projection display equipment of whole PDLC as an independent product, this video generating apparatus 30 also can be arranged on main body frame 100 outsides, realize transfer of data by the output transmission between the connection realization interface of data line or by wireless communication module, at this moment, 30 external devices as the transparent projection display equipment of whole PDLC of this video generating apparatus provide video source to this display unit.
PDLC transparent display screen 10 is a kind of PDLC display screens, this display screen mixes low molecular weight liquid crystal with the pre-polymerization phase, under certain condition through polymerization reaction, form micron-sized liquid crystal droplet and be evenly dispersed in the macromolecule network, the dielectric anisotropy of recycling liquid crystal molecule obtains to have the electro-optic response characteristic.Usually the PDLC transparent display screen has astigmatism and two kinds of operating states of printing opacity.Take normal white property PDLC transparent display screen as example, under the situation without applied voltage, can not form regular electric field between screen, the direction of optic axis of liquid crystal particle is random, presents disordered state, its effective refractive index not with the index matching of polymer.Incident ray is by strong scattering, and it is opaque or translucent that film is.
When having applied external voltage, the optical axis normal to screen surface alignment of liquid crystal particle, namely consistent with direction of an electric field.The ordinary refraction index of liquid crystal particle and the refractive index of polymer are mated substantially, without obvious interface, have consisted of a basic uniformly medium, so incident light scattering can not occur, film is transparence.Therefore, under the driving of extra electric field, the PDLC transparent display screen can switch between astigmatism and printing opacity two states.
According to this characteristic, after the projected picture of projecting apparatus 20 projects on the PDLC transparent display screen 10, if PDLC transparent display screen 10 is at astigmatic state, then this moment, PDLC was as common projection screen, after projected picture projects on this PDLC transparent display screen, present a real image, spectators can observe this real image in the both sides of screen.And when PDLC transparent display screen during at light transmission state, being equivalent to a holographic film, this moment, spectators can all can be observed the demonstration image by the both sides of this PDLC transparent display screen.
This PDLC transparent display screen 10 is arranged on the focal plane of projecting apparatus 20.Preferably, it is just in time identical with the viewing area of PDLC transparent display screen 10 that this projecting apparatus 20 satisfies the picture size that projecting apparatus 20 projects on the PDLC transparent display screen 10 to the distance of this PDLC transparent display screen 10, so, can maximizedly utilize the size of PDLC transparent display screen 10, make the picture of demonstration large as much as possible.In some feasible application, the distance that this projecting apparatus 20 arrives PDLC transparent display 10 is between 0.5 meter to 5 meters, and the size of this PDLC transparent display 10 is between 20 cun to 150 cun.
As shown in Figure 2, the shape of this PDLC transparent display screen 10 can be polygon, circle or irregular figure, such as rectangle, hexagon or circle.So design can be so that the present invention in appearance, can do adaptive adjustment with the application scenario of this display device, thereby on the basis of product practicality, have more aesthetic.More preferred, because the pliability of PDLC material is higher, can be curved surface with the surface design of PDLC transparent display screen 10, thereby satisfies the needs of product diversity.
See also Fig. 3, Fig. 3 is the structural representation of the transparent projection display equipment of PDLC under the second execution mode of the present invention.In execution mode one, the transparent projection display equipment of PDLC only has a PDLC transparent display screen and the projecting apparatus on 1 direction.And in execution mode two, a kind of display unit with a plurality of PDLC transparent display screens of a plurality of directions has been proposed.As shown in Figure 3, the transparent projection display equipment of this PDLC comprises two PDLC transparent display screens 10 ', be arranged at respectively on two opposites of main body frame 100 ', between these two PDLC transparent display screens 10 ', be provided with two projecting apparatus 20 ', respectively corresponding two PDLC transparent display screens 10 ' are in order to render to picture on each self-corresponding PDLC transparent display screen 10 '.These two projecting apparatus 20 ' can be connected on the video generating apparatus, by the control of video generating apparatus, realize carrying out on two PDLC transparent display screens synchronous video and show.These two projecting apparatus 20 ' also can connect a video generating apparatus separately, like this, namely can show same video on two PDLC transparent display screens, also can show different videos.These two PDLC are arranged on two opposing directions, make the single display device possess the ability that multiaspect shows.
According to execution mode two, several modes of texturing that can be unfolded as follows, such as two PDLC transparent display screens being arranged on two adjacent surfaces of main body frame, perhaps the quantity of these PDLC transparent display screens is more than 2, be separately positioned on the different side elevations of main body frame, even the PDLC transparent display screen all is set on the direction that main body frame might form, form the picture disply to all directions.For display unit of the present invention, the design flexibility that its multiaspect shows has also obtained embodiment, can increase and decrease for different application scenarioss like this.
In sum, the present invention proposes the transparent projection display equipment of a kind of PDLC, this display unit is used the compound mode of video generating apparatus+projecting apparatus, and stable dynamic video output is provided, and by the astigmatism of PDLC and the reproduction of printing opacity principle realization picture.The prior art of comparing, because the PDLC transparent display screen need not complicated drive circuit and extra backlight carries out picture disply, institute is so that display unit of the present invention has simple to operate, energy-conserving and environment-protective, the characteristics such as long service life, by PDLC transparent display screen and the projecting apparatus of the combination of design varying number, can allow display unit of the present invention realize the function that multiaspect shows in addition.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. transparent projection display equipment of PDLC, it is characterized in that: comprise at least one PDLC transparent display screen, the projecting apparatus corresponding with described PDLC transparent display screen quantity, and video generating apparatus, described projecting apparatus is connected transmission of video interface or wireless communication module and connects with the video generating apparatus, described PDLC transparent display screen is arranged on the focal plane of described projecting apparatus.
2. the transparent projection display equipment of PDLC as claimed in claim 1 is characterized in that: it is just in time identical with the viewing area of PDLC transparent display screen to the picture size on the PDLC transparent display screen that described projecting apparatus satisfies projector projects to the distance of described PDLC transparent display screen.
3. the transparent projection display equipment of PDLC as claimed in claim 1, it is characterized in that: also comprise main body frame, described projecting apparatus and PDLC transparent display screen are made in this main body frame.
4. the transparent projection display equipment of PDLC as claimed in claim 3, it is characterized in that: described main body frame is the solid geometry framework, described PDLC is arranged on the main facade of this solid geometry framework, and described projecting apparatus is placed on this solid geometry framework inside on the direction of main facade.
5. the transparent projection display equipment of PDLC as claimed in claim 3, it is characterized in that: the quantity of described PDLC transparent display screen is greater than 1, these PDLC transparent display screens are arranged on the different side elevations of described main body frame, form the picture disply to all directions.
6. the transparent projection display equipment of PDLC as claimed in claim 1, it is characterized in that: described video generating apparatus is PC, DVD, VCD or MP4.
7. the transparent projection display equipment of PDLC as claimed in claim 1, it is characterized in that: described projecting apparatus is LCD projecting apparatus, DLP projecting apparatus or CRT projecting apparatus.
8. the transparent projection display equipment of PDLC as claimed in claim 1, it is characterized in that: described PDLC transparent display screen is circle or polygon.
9. the transparent projection display equipment of PDLC as claimed in claim 8, it is characterized in that: the surface of described PDLC transparent display screen is curved surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102403074A CN103313014A (en) | 2013-06-18 | 2013-06-18 | PDLC (polymer dispersed liquid crystal) transparent projection display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102403074A CN103313014A (en) | 2013-06-18 | 2013-06-18 | PDLC (polymer dispersed liquid crystal) transparent projection display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105898255A (en) * | 2016-05-30 | 2016-08-24 | 佛山市章扬科技有限公司 | Screen-free television capable of performing polyhedral projection |
| WO2018107585A1 (en) * | 2016-12-16 | 2018-06-21 | 广景视睿科技（深圳）有限公司 | Multi-directional display advertising machine |
| CN113804057A (en) * | 2021-09-28 | 2021-12-17 | 泉州师范学院 | AR (augmented reality) stability maintenance intelligent control epidemic prevention shield |
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Application publication date: 20130918 |