CN105093534A - Display screen and display apparatus - Google Patents
Display screen and display apparatus Download PDFInfo
- Publication number
- CN105093534A CN105093534A CN201510520520.XA CN201510520520A CN105093534A CN 105093534 A CN105093534 A CN 105093534A CN 201510520520 A CN201510520520 A CN 201510520520A CN 105093534 A CN105093534 A CN 105093534A
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- light
- radiation shield
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- 238000002310 reflectometry Methods 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000005855 radiation Effects 0.000 claims description 44
- 230000011514 reflex Effects 0.000 claims description 12
- 239000003086 colorant Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 238000005374 membrane filtration Methods 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 238000002834 transmittance Methods 0.000 abstract description 2
- 239000010409 thin film Substances 0.000 abstract 3
- 238000001228 spectrum Methods 0.000 description 15
- 238000013461 design Methods 0.000 description 5
- 230000003760 hair shine Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000985 reflectance spectrum Methods 0.000 description 2
- 230000005457 Black-body radiation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
Abstract
The present invention provides a display screen and a display apparatus. The display screen includes a transparent substrate and a thin film on a surface of the substrate. The thin film has a wavelength selection characteristic, and has one reflection apex in a red wave band, a green wave band and a blue band respectively, an average transmitting rate of other visible light wave bands except for the reflection apexes is larger than 85%; wherein, a peak reflectance of the green reflection apex and the blue reflection apex is a first ratio and a peak reflectance of the red reflection apex and the blue reflection apex is a second ratio so that human eyes can not detect a difference between a color of an emergent light and a color of an incident light after a transmission of the sunlight to the thin film in sunny days. The reflection screen has a high transmittance for the sunlight and a constant color, and thus the reflection screen does not affect the way that a driver observes sceneries outside a vehicle. At the same time, the reflection screen has a high reflectivity for information light projected by a projector so as to greatly solve a problem of insufficient luminance.
Description
Technical field
The present invention relates to display field, particularly relate to the display device of display screen and this display screen of use.
Background technology
At present, the vehicle-mounted display that comes back is the focus of applied research.The display that comes back refers to looks squarely in sight line person for driving a car, by the image projection of automobile information, navigation information etc. in human eye, this image is overlapping with the background view in the people visual field, and person for driving a car does not need to bow and just can obtain necessary information, thus improves driving safety.
Existing multiple new line display product on market, but the problem of ubiquity luminance shortage; Especially, when by day (fine day) bias light is very strong, the overlapping frame luminance shortage of display that comes back will cause not seeing.This is the technical problem underlying of the vehicle-mounted display that comes back of restriction at present.
Current technical scheme is, on the front windshield projecting image onto automobile or one piece of transparent plate, utilizes the reflection of light on the interface of front windshield or transparent plate to be the sight line that the reflection of information light enters person for driving a car.Due to boundary reflection rate very low (about 4%), the loss of information light is very large, and this is the major reason of the luminance shortage of information light.If but the information of lifting light reflectance, certainly will reduce the transmissivity of former surround lighting, such as, reduce the transmissivity of front windshield, this can cause the decline to the outer scenery observation ability of car, is obviously unacceptable.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of radiation shield, comprises the film of transparent base and substrate surface, and this film has wavelength selectivity, it respectively has a reflection peak at red, green, blue three wave bands, and the mean transmissivity of other visible light wave range beyond reflection peak is more than 85%; Wherein, green reflection peak is the first ratio with the ratio of the peak reflectivity of blue reflection peak, red reflex peak is the second ratio with the ratio of the peak reflectivity of blue reflection peak, and the color of emergent light when making fine day after this film of solar transmission and the difference human eye of the color of incident light cannot be discovered.
The present invention also proposes a kind of display device, comprise projection arrangement and above-mentioned radiation shield, the coloured image of projection arrangement projection is made up of red, green, blue three primary colours light, wherein the wavelength of ruddiness corresponds to the wavelength at the red reflex peak of radiation shield, the wavelength of green glow corresponds to the wavelength of the green reflection peak of radiation shield, and the wavelength of blue light corresponds to the wavelength of the blue reflection peak of radiation shield; The light of projection arrangement projection enters human eye through the reflection of radiation shield.
Radiation shield has high permeability to daylight and color is constant, and such radiation shield would not affect the observation of driver to the outer scenery of car; Radiation shield has higher reflectivity to the information light that projection arrangement projects simultaneously, solves the problem of luminance shortage to a great extent.
Accompanying drawing explanation
Fig. 1 is the structural representation of the display device of first embodiment of the invention;
Fig. 2 is the wavelength selectivity of the film of radiation shield in Fig. 1 embodiment;
Fig. 3 is the three primary colours spectrum having superposed projection arrangement on Fig. 2;
Fig. 4 is that the spectrum before and after the radiation shield shown in fine day lower day light transmission Fig. 2 compares.
Embodiment
The present invention proposes a kind of radiation shield and uses the display device of this display screen, and the fundamental diagram of this display device as shown in Figure 1.This display device comprises projection arrangement 102 and display screen 101.This display screen comprises the film of transparent base and substrate surface, and this film has wavelength selectivity, and the reflectance spectrum of its wavelength selectivity as shown in Figure 2.Can find out in fig. 2, film respectively has a reflection peak 233,232 and 231 at red, green, blue three wave bands, and the mean transmissivity of other visible light wave range beyond reflection peak is more than 85%.
In the present embodiment, the centre wavelength of blue reflection peak 231 is 455 nanometers, and the centre wavelength of green reflection peak 232 is 520 nanometers, and the centre wavelength at red reflex peak 233 is 625 nanometers, and the width of each reflection peak is all 30 nanometers.Green reflection peak 232 is 1.7 with the ratio of the peak reflectivity of blue reflection peak 231, and red reflex peak 233 is 2.1 with the ratio of the peak reflectivity of blue reflection peak 231.
In projection arrangement, the coloured image that projection arrangement 102 projects is made up of red, green, blue three primary colours light, after its three primary colours spectrum superposes with the reflectance spectrum of radiation shield as shown in Figure 3.Wherein the wavelength of the spectrum 333 of ruddiness corresponds to the wavelength at the red reflex peak 233 of radiation shield, and the wavelength of the spectrum 332 of green glow corresponds to the wavelength of the green reflection peak 232 of radiation shield, and the wavelength of the spectrum 331 of blue light corresponds to the wavelength of the blue reflection peak 231 of radiation shield.
The light 111 that projection arrangement 102 projects enters human eye 191 through the reflection of radiation shield 101.Due to red, green, blue three primary colours light in the image light of projection arrangement projection spectrum all can reflect by reflection peak corresponding to radiation shield, and reflectivity is much higher than boundary reflection rate 4% of the prior art, and the light therefore projected in human eye greatly strengthen.Meanwhile, when car is exercised out of doors, surround lighting (daylight) 112 can enter human eye by Transflective screen 101, and the spectrum before and after its Transflective screen 101 more as shown in Figure 4.As shown in Figure 4, spectrum of sunlight is 441, and this is the blackbody radiation spectrum under typical 6000K colour temperature, is roughly equal to fine day spectrum of sunlight on lower daytime.Spectrum after this solar transmission radiation shield is 442, this spectrum has depression (being reflected by reflection peak) at red, green, blue place respectively, but because the mean transmissivity of other visible light wave range beyond reflection peak is very high, therefore total energetic transmittance is very high, does not namely significantly reduce in the brightness of the scene in the driver external world.Simultaneously, because green reflection peak 232 and the ratio of the peak reflectivity of blue reflection peak 231 are 1.7, red reflex peak 233 is 2.1 with the ratio of the peak reflectivity of blue reflection peak 231, the color of emergent light now during fine day after this film of solar transmission and the difference human eye of the color of incident light cannot be discovered, and the color that namely spectrum 441 and spectrum 442 look is very close.
Like this, radiation shield has high permeability to daylight and color is constant, and such radiation shield would not affect the observation of driver to the outer scenery of car; Radiation shield has higher reflectivity to the information light that projection arrangement projects simultaneously, solves the problem of luminance shortage to a great extent.
For convenience of description, defining green reflection peak with the ratio of the peak reflectivity of blue reflection peak is the first ratio, and red reflex peak is the second ratio with the ratio of the peak reflectivity of blue reflection peak.First ratio and the second ratio can control when processing film, and such as plated film curve can design in advance before plated film processing.The design of the first ratio and the second ratio, be in order to solar transmission film when realizing fine day after the color of emergent light and the object that cannot discover of the difference human eye of the color of incident light; In order to achieve this end, designer can through to calculate or experiment obtains the color chromaticity coordinates of emergent light under different first ratio and the second ratio, think two kinds of color human eye None-identifieds when the chromaticity coordinates difference of this chromaticity coordinates and incident light is less than a tolerance, the first ratio so now and the second ratio are exactly required design load.
Design through inventor finds, the first ratio is relevant with the wavelength location of the red, green, blue reflection peak of film with the second ratio.Such as be different from the numerical value in above-described embodiment, when the centre wavelength of green reflection peak is 525 nanometers and the centre wavelength of red reflex peak and blue reflection peak is constant, in order to the object that the difference human eye of the color of emergent light after solar transmission radiation shield when realizing fine day and the color of incident light cannot be discovered, first ratio needs to become 1.47, and the second ratio needs to become 1.97.
The wavelength of the reflection peak of radiation shield must be corresponding respectively with the wavelength of the red, green, blue three primary colours light of the information light of projection arrangement projection.What deserves to be explained is, when the film of radiation shield is by the pellicle that multilayer dielectric film is formed, the wavelength of the reflection peak of radiation shield changes with incident angle, and the larger reflection peak of incident angle more drifts about to short wavelength.So in this case, statement is more accurately, the wavelength of the reflection peak of radiation shield under the incident angle of projection arrangement project information light center light is corresponding respectively with the wavelength of the red, green, blue three primary colours light of the information light that projection arrangement projects.
In the present embodiment, preferably, projection arrangement comprises red, green, blue LED as three primary light source; Or projection arrangement comprises white light LEDs as light source, the white light that white light LEDs sends forms red, green, blue three primary colours light after look membrane filtration.The life-span is long and energy-conservation to use the benefit of LED light source to be.Correspond, preferably, the span of the blue reflection peak centre wavelength of radiation shield film is 445 to 465 nanometers, and the span of green reflection peak centre wavelength is 510 to 530 nanometers, and red reflex peak center wavelength is 615 to 635 nanometers.Through inventor's analog computation and checking, now the span of the first ratio is the span of the 1.4 to 2, the second ratio is 1.5 to 2.4.Beneficial effect of the present invention can be reached like this.
In actual applications, the material of the transparent base of radiation shield is glass or organic glass.It can be shaped to plane or curved surface, and the face type of such as radiation shield is concave surface, and such benefit to coordinate optical design to produce certain optical effect.The film of radiation shield then can attach over the transparent substrate, or film direct plating over the transparent substrate.Preferably, film has the character of reflects infrared light or ultraviolet light, or film has the character of reflects infrared light and ultraviolet light simultaneously.Such benefit is to reduce infrared light and/or ultraviolet light shines into Che Nei or shines on projection arrangement, can effectively reduce temperature like this and extend service time of projection arrangement.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a radiation shield, it is characterized in that, comprise the film of transparent base and substrate surface, this film has wavelength selectivity, it respectively has a reflection peak at red, green, blue three wave bands, and the mean transmissivity of other visible light wave range beyond reflection peak is more than 85%; Wherein, green reflection peak is the first ratio with the ratio of the peak reflectivity of blue reflection peak, red reflex peak is the second ratio with the ratio of the peak reflectivity of blue reflection peak, and the color of emergent light when making fine day after this film of solar transmission and the difference human eye of the color of incident light cannot be discovered.
2. radiation shield according to claim 1, it is characterized in that, the span of blue reflection peak centre wavelength is 445 to 465 nanometers, the span of green reflection peak centre wavelength is 510 to 530 nanometers, red reflex peak center wavelength is 615 to 635 nanometers, the span of the first ratio is the span of the 1.4 to 2, the second ratio is 1.5 to 2.4.
3. radiation shield according to claim 1, is characterized in that, the material of described transparent base is glass or organic glass.
4. radiation shield according to claim 1, is characterized in that, the face type of described radiation shield is concave surface.
5. radiation shield according to claim 1, is characterized in that, described film attaches over the transparent substrate, or film direct plating over the transparent substrate.
6. radiation shield according to claim 1, is characterized in that, described film has the character of reflects infrared light or ultraviolet light.
7. radiation shield according to claim 1, is characterized in that, described film has the character of reflects infrared light and ultraviolet light.
8. a display device, it is characterized in that, comprise projection arrangement and radiation shield according to any one of claim 1 to 7, the coloured image of projection arrangement projection is made up of red, green, blue three primary colours light, wherein the wavelength of ruddiness corresponds to the wavelength at the red reflex peak of radiation shield, the wavelength of green glow corresponds to the wavelength of the green reflection peak of radiation shield, and the wavelength of blue light corresponds to the wavelength of the blue reflection peak of radiation shield; The light of projection arrangement projection enters human eye through the reflection of radiation shield.
9. display device according to claim 8, is characterized in that, described projection arrangement comprises red, green, blue LED as three primary light source.
10. display device according to claim 8, is characterized in that, described projection arrangement comprises white light LEDs as light source, and the white light that white light LEDs sends forms red, green, blue three primary colours light after look membrane filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520520.XA CN105093534A (en) | 2015-08-21 | 2015-08-21 | Display screen and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520520.XA CN105093534A (en) | 2015-08-21 | 2015-08-21 | Display screen and display apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105093534A true CN105093534A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510520520.XA Pending CN105093534A (en) | 2015-08-21 | 2015-08-21 | Display screen and display apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN105093534A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965386A (en) * | 2015-07-13 | 2015-10-07 | 南京先进激光技术研究院 | Projection display equipment with multilayer reflecting thin-films |
| WO2017157136A1 (en) * | 2016-03-17 | 2017-09-21 | 异视科技（北京）有限公司 | Display imaging system and method, and vehicle carrying the system |
| CN107203042A (en) * | 2016-03-17 | 2017-09-26 | 异视科技（北京）有限公司 | It is shown as system and method, the vehicles with the system |
| CN112987152A (en) * | 2019-12-17 | 2021-06-18 | 华为技术有限公司 | Reflective film and display imaging system |
| CN113655616A (en) * | 2021-06-01 | 2021-11-16 | 李湘裔 | Reflective spectral imaging system for near-eye display |
| CN115373209A (en) * | 2021-05-18 | 2022-11-22 | 成都菲斯特科技有限公司 | High-contrast projection screen |
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| JP2002098928A (en) * | 2000-09-25 | 2002-04-05 | Minolta Co Ltd | Video display device |
| CN1514951A (en) * | 2002-03-14 | 2004-07-21 | 索尼公司 | projection screen |
| CN103003736A (en) * | 2010-05-26 | 2013-03-27 | 约翰逊控股公司 | Display, in particular head-up-display of a vehicle |
| CN103487942A (en) * | 2013-09-29 | 2014-01-01 | 惠州市华阳多媒体电子有限公司 | HUD luminance improving device |
| CN103592762A (en) * | 2012-08-17 | 2014-02-19 | 精工爱普生株式会社 | Image display device and head-mounted image display device |
| CN205003361U (en) * | 2015-08-21 | 2016-01-27 | 杨毅 | Display screen and display device |
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2015
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| JP2002098928A (en) * | 2000-09-25 | 2002-04-05 | Minolta Co Ltd | Video display device |
| CN1514951A (en) * | 2002-03-14 | 2004-07-21 | 索尼公司 | projection screen |
| CN103003736A (en) * | 2010-05-26 | 2013-03-27 | 约翰逊控股公司 | Display, in particular head-up-display of a vehicle |
| CN103592762A (en) * | 2012-08-17 | 2014-02-19 | 精工爱普生株式会社 | Image display device and head-mounted image display device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104965386A (en) * | 2015-07-13 | 2015-10-07 | 南京先进激光技术研究院 | Projection display equipment with multilayer reflecting thin-films |
| WO2017157136A1 (en) * | 2016-03-17 | 2017-09-21 | 异视科技（北京）有限公司 | Display imaging system and method, and vehicle carrying the system |
| CN107203042A (en) * | 2016-03-17 | 2017-09-26 | 异视科技（北京）有限公司 | It is shown as system and method, the vehicles with the system |
| KR20190009278A (en) * | 2016-03-17 | 2019-01-28 | 호라이즌-엑스 테크놀로지 엘엘씨 | Display imaging system and method, vehicle having the system |
| US10725293B2 (en) | 2016-03-17 | 2020-07-28 | Futurus Technology Co., Ltd. | Displaying system, method, and vehicle including such a displaying system |
| KR102746159B1 (en) * | 2016-03-17 | 2024-12-26 | 푸투루스 테크놀로지 컴퍼니 리미티드 | Display imaging system and method, and transportation device having the system |
| US11397323B2 (en) | 2016-03-17 | 2022-07-26 | Futurus Technology Co., Ltd. | Displaying system, method, and vehicle |
| CN112987152A (en) * | 2019-12-17 | 2021-06-18 | 华为技术有限公司 | Reflective film and display imaging system |
| CN112987152B (en) * | 2019-12-17 | 2022-10-04 | 华为技术有限公司 | Reflective film and display imaging system |
| CN115373209A (en) * | 2021-05-18 | 2022-11-22 | 成都菲斯特科技有限公司 | High-contrast projection screen |
| CN115373209B (en) * | 2021-05-18 | 2023-07-14 | 成都菲斯特科技有限公司 | High-contrast projection screen |
| WO2022252507A1 (en) * | 2021-06-01 | 2022-12-08 | 李湘裔 | Reflection spectral imaging system for near-to-eye display |
| CN113655616A (en) * | 2021-06-01 | 2021-11-16 | 李湘裔 | Reflective spectral imaging system for near-eye display |
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| PB01 | Publication | ||
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Application publication date: 20151125 |