CN101090057A - High luminous effect high contrast screen in vacuum electronic emission display device - Google Patents
High luminous effect high contrast screen in vacuum electronic emission display device Download PDFInfo
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- CN101090057A CN101090057A CN 200610087255 CN200610087255A CN101090057A CN 101090057 A CN101090057 A CN 101090057A CN 200610087255 CN200610087255 CN 200610087255 CN 200610087255 A CN200610087255 A CN 200610087255A CN 101090057 A CN101090057 A CN 101090057A
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Abstract
This relates to a fluorescent screen of high radiation efficiency and high contrast in a vacuum electronic emission display containing a low refractive index medium layer including: a glass screen, a black bottom, a color filter film, fluorescent powder and an anode Al film characterizing that a medium layer of super low refractive index is set between a glass screen and the color filter film and the refraction sphere is 1.0-1.4.
Description
Technical field
The invention belongs to the Display Technique field, the high-luminous-efficiency high-contrast phosphor screen in particularly a kind of vacuum electronic emission display device.
Technical background
Current flat panel display market is based on LCD (LCD) and plasma display panel (PDP), and the trend that replaces traditional cathode ray tube (CRT) display is arranged.From technological layer, the bottleneck of its development without limits basically, and also the pollution that produces in process of production is very little, can not constitute environmental protection pressure.CRT monitor remain aspect the leading indicators such as colourity, response flat panel display can not compare.Yet CRT exists the low shortcoming of details in a play not acted out on stage, but told through dialogues dynamic contrast with the field emission display (FED) with similar displaying principle, generally speaking less than 50: 1.Under the single-definition condition, the brightness that display needs is not high, and the shortcoming that CRT and FED contrast are low is also not obvious, and overall display performance surpasses LCD and PDP.Need high brightness, the problem that contrast is low under high brightness conditions to seem very outstanding because high definition shows, therefore we can say, the CRT of present level and FED incompatibility high definition TV show particularly with LCD bigger gap is arranged.
In principle, the details in a play not acted out on stage, but told through dialogues dynamic contrast of LCD can reach 300: 1, and practical devices can be above 100: 1.If want to make the contrast of CRT and FED to reach the level of LCD, need on existing basis, improve 1 times at least.If reach this target, then CRT and FED can reach the highest level of existing display in high definition shows, have the potentiality that dominate the market.
The details in a play not acted out on stage, but told through dialogues contrast of display is defined as the ratio of brightness with the brightness of dim spot of the bright spot of image that shows in the darkroom.The bright field contrast is defined as the contrast under certain illumination conditions, and is relevant with device architecture and ambient light illumination.In TV showed, the influence of details in a play not acted out on stage, but told through dialogues contrast was bigger.For CRT and the low problem of FED bright field contrast, from these devices once the attention that height occurred having obtained.The original intention that substitutes common phosphors, increase color filter film and black matrix with painted fluorescent material all is in order to improve the bright field contrast.For the details in a play not acted out on stage, but told through dialogues contrast, never correct understanding takes for the numerical value that can reach very high.The details in a play not acted out on stage, but told through dialogues contrast of the surface conductive emissive display of announcing as Canon Inc. (SED) that belongs to FED was up to 100000: 1, and these data obviously are absurd, are the problems of method of testing.Measures such as black matrix, color filter film, painted fluorescent material have also all reached the effect that improves the details in a play not acted out on stage, but told through dialogues contrast simultaneously except improving the bright field contrast.The painted fluorescent material of general use improves contrast in CRT, and in FED, because anode voltage not high enough (generally being lower than 10000 volts), the light-emitting phosphor color is not very good, the use of color filter film can improve the performance colour gamut, reached simultaneously and improved the effect of bright field and details in a play not acted out on stage, but told through dialogues contrast, but increased the complexity of technology.Only with regard to improving contrast, the effect of color filter film is more better than painted fluorescent material, has little significance and color filter film and painted fluorescent material use simultaneously.
Causing CRT and the low reason of FED details in a play not acted out on stage, but told through dialogues contrast is self luminous causing, and is difficult to overcome.The light that pixel is sent out produces very big reflection in glass front, and the reflection ratio is up to 80%.These light that are reflected are got back to again in the fluorescent material, through black matrix, see the absorption of look fluorescent material or color filter film after, on the aluminium film, be reflected and scattering, about about 10% launch again.Because this part is not to launch again from original pixel, but has moved suitable distance, therefore constituted stray light to the interference of image, reduced contrast.Because the panel glass thickness of CRT surpasses 15 millimeters, therefore light that sends again and former light emitting pixel possibility wide apart belongs to long distance and disturbs.For FED, panel glass thickness generally is no more than 3 millimeters, and the light that sends again and the spacing of former pixel are nearer, belongs to short distance and disturbs.No matter grow distance interference and short distance and disturb, all reduced the contrast of image, even influenced colourity, resolution and the brightness of image.
If the problems referred to above do not solve, then CRT and FED are difficult to satisfy the requirement that high definition TV shows.And if this problem can be resolved, then CRT and FED will show aspect the high definition demonstration than LCD and PDP more performance, CRT can elicit latent faculties in the TV below 40 inches shows, FED then can dominate the market with unrivaled high-performance in the large scale TV shows.
Summary of the invention
The present invention is directed to the problem that exists in the used phosphor screen in the existing vacuum electronic emissive display, a kind of new fluorescence structure is provided, the basic low problem of contrast that exists that solves improves more than 1 times the details in a play not acted out on stage, but told through dialogues contrast, makes fluoroscopic luminous efficiency also improve more than 1 times simultaneously.Compare with the phosphor screen of existing structure, structure of the present invention a little complexity a bit, but in that to improve aspect contrast and the luminous efficiency effect very obvious.The material that the present invention adopts is common, technology is simple, processing procedure is pollution-free, is fit to produce in enormous quantities.
Technical scheme of the present invention is as follows:
High-luminous-efficiency high-contrast phosphor screen in a kind of vacuum electronic emission display device mainly comprises glass screen 10, black matrix 11, color filter film 13,15,17, primary colours fluorescent material 14,16,18 and anode aluminium film 19.It is characterized in that: also comprise one deck low refractive index dielectric layer 12 that is arranged between glass screen and the color filter film, the ranges of indices of refraction of this layer is 1.0-1.4, and thickness is greater than 0.2 micron.The position that is provided with of black matrix has two kinds, a kind of being arranged between glass screen and the low refractive index dielectric layer, and another kind is arranged between low refractive index dielectric layer and the color filter film.In this programme, owing to adopted color filter film, fluorescent material adopts non-staining generally speaking.
High-luminous-efficiency high-contrast phosphor screen in a kind of vacuum electronic emission display device mainly comprises glass screen 10, black matrix 11, primary colours fluorescent material 14,16,18 and anode aluminium film 19.It is characterized in that: also comprise one deck low refractive index dielectric layer 12 that is arranged between glass screen and the fluorescent material, the ranges of indices of refraction of this layer is 1.0-1.4, and thickness is greater than 0.2 micron.The position that is provided with of black matrix has two kinds, a kind of being arranged between glass screen and the low refractive index dielectric layer, and another kind is arranged between low refractive index dielectric layer and the fluorescent material.In this programme, generally adopt painted fluorescent material, to improve contrast.
Adopt the necessity of filter coating and painted fluorescent material little simultaneously.
Low refractive index dielectric layer among the present invention can adopt membrane structure, and thickness is generally less than 1 micron, adopts the thin film technique preparation, as evaporation, sputter, chemical vapour deposition (CVD) and sol-gel method etc.The low refractive index dielectric layer also can adopt bulk structure, and thickness generally surpasses 1 micron, by the thick film technology preparation, as spin coating sintering, printing sintering, ink-jet sintering etc.These technologies of preparing belong to conventional technical ability for the scientific and technical personnel that are engaged in thin film technique, needn't describe in detail.
The material of low refractive index dielectric layer comprises two types: a kind of is the material that self has low-refraction, as calcirm-fluoride, magnesium fluoride, strontium fluoride, aluminum fluoride, fluorine silica, fluorocarbons etc.Another kind is a mesoporous material, as porous silica etc.The refractive index of porous material is lower, and can be controlled by porosity, and therefore lowest refractive index is preferred material near 1.More than two class materials can make film and thick film.Preceding a kind of material can adopt methods such as evaporation, sputter, chemical vapour deposition (CVD), collosol and gel to be prepared into film, and then a kind of material generally is prepared into film with sol-gel method.As for thick film, two kinds of preparation methods are basic identical, all are to adopt the particle of micron or nano-scale to prepare by conventional thick film technology.
From the principle aspect, the refractive index of this layer low refractive index dielectric layer is low more good more, when its value near 1 the time, the total reflection light in the glass screen has not just existed, and only exists part to launch light, the reflection total amount has only 12%.Fluoroscopic reflection total amount 80% when not having this layer low refractive index dielectric layer is compared, and has almost reduced an order of magnitude, and the details in a play not acted out on stage, but told through dialogues contrast can reach 300: 1, and luminous efficiency can improve 2 times, surpasses 15 lumens/watt.When the refractive index of this layer dielectric layer was 1.2, the details in a play not acted out on stage, but told through dialogues contrast also can reach 150: 1, and luminous efficiency reaches 10 lumens/watt, reached the highest level of current display device.
Description of drawings
Fig. 1 is the high-luminous-efficiency high-contrast fluorescence structure of vacuum electronic emission display device provided by the invention, and black matrix is arranged between glass screen and the low refractive index dielectric layer.
Fig. 2 is the high-luminous-efficiency high-contrast fluorescence structure of vacuum electronic emission display device provided by the invention, and black matrix is arranged between low refractive index dielectric layer and the color filter film.
Fig. 3 is the high-luminous-efficiency high-contrast fluorescence structure that does not comprise the vacuum electronic emission display device of color filter film provided by the invention, and black matrix is arranged between glass screen and the low refractive index dielectric layer.
Fig. 4 is the high-luminous-efficiency high-contrast fluorescence structure that does not comprise the vacuum electronic emission display device of color filter film provided by the invention, and black matrix is arranged between low refractive index dielectric layer and the fluorescent material.
Fig. 5 is the fluorescence structure of the vacuum electronic emission display device of prior art.
Among the figure: the 10-glass screen; The 11-black matrix; 12-low refractive index dielectric layer; 13,15,17-color filter film; 14,16,18-primary colours fluorescent material; 19-anode aluminium film.
Embodiment
The high-luminous-efficiency high-contrast phosphor screen of the vacuum electronic emission display device that the present invention is proposed below reaches accompanying drawing in conjunction with the embodiments and describes in detail:
Fig. 1 is the high-contrast rate fluorescence structure in a kind of vacuum electronic emissive display provided by the invention, and wherein 10 is glass screen, and 11 is black matrix, 12 is the low refractive index dielectric layer, 13,15,17 is primary colours fluorescent material, and 14,16,18 is color filter film, and 19 is anode aluminium film.In this structure, black matrix is arranged between glass screen and the low refractive index dielectric layer.
Fig. 2 is the high-luminous-efficiency high-contrast fluorescence structure in the another kind of vacuum electronic emissive display provided by the invention, and wherein 10 is glass screen, and 11 is black matrix, 12 is the low refractive index dielectric layer, 13,14,15 is primary colours fluorescent material, and 14,16,18 is color filter film, and 19 is anode aluminium film.In this structure, black matrix is arranged between low refractive index dielectric layer and the color filter film.
Fig. 3 is the high-luminous-efficiency high-contrast fluorescence structure in a kind of vacuum electronic emissive display that does not comprise color filter film provided by the invention, wherein 10 is glass screen, and 11 is black matrix, and 12 is the low refractive index dielectric layer, 14,16,18 is primary colours fluorescent material, and 19 is anode aluminium film.In this structure, black matrix is arranged between glass screen and the low refractive index dielectric layer.
Fig. 4 does not comprise high-luminous-efficiency high-contrast fluorescence structure in the vacuum electronic emissive display of color filter film for another kind provided by the invention, wherein 10 is glass screen, and 11 is black matrix, and 12 is the low refractive index dielectric layer, 14,16,18 is primary colours fluorescent material, and 19 is anode aluminium film.In this structure, black matrix is arranged between low refractive index dielectric layer and the fluorescent material.
Embodiment 1
Prepare black matrix earlier on glass screen, use the Prepared by Sol Gel Method porous silicon oxide membrane again, thickness is 400 nanometers, and the porous silica porosity that obtains is 60%.Prepare color filter film and primary colours fluorescent material then successively, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
Embodiment 2
On glass screen, prepare black matrix earlier, prepare the porous silica dielectric layer with thick film technology again, 5 microns of thickness, used porous silica porosity is 70%.Prepare color filter film and primary colours fluorescent material then successively, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1.5 times, and contrast improves more than 1.5 times.
Embodiment 3
Prepare black matrix earlier on glass screen, prepare calcium-fluoride thin film with evaporation technique again, thickness is 400 nanometers.Prepare color filter film and primary colours fluorescent material then successively, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
Embodiment 4
Earlier use the Prepared by Sol Gel Method porous silicon oxide membrane on glass screen, thickness is 400 nanometers, and the porous silica porosity that obtains is 60%.Prepare black matrix, color filter film and primary colours fluorescent material again, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
Embodiment 5
On glass screen, prepare the porous silica dielectric layer with thick film technology earlier, 5 microns of thickness, used porous silica porosity is 70%.Prepare black matrix, color filter film and primary colours fluorescent material again, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1.5 times, and contrast improves more than 1.5 times.
Embodiment 6
Earlier prepare calcium-fluoride thin film with evaporation technique on glass screen, thickness is 400 nanometers.Prepare black matrix, color filter film and primary colours fluorescent material again, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
Embodiment 7
Prepare black matrix earlier on glass screen, use the Prepared by Sol Gel Method porous silicon oxide membrane again, thickness is 400 nanometers, and the porous silica porosity that obtains is 60%.Prepare painted primary colours fluorescent material then, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
Embodiment 8
On glass screen, prepare black matrix earlier, prepare the porous silica dielectric layer with thick film technology again, 5 microns of thickness, used porous silica porosity is 70%.Prepare painted primary colours fluorescent material then, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1.5 times, and contrast improves more than 1.5 times.
Embodiment 9
Prepare black matrix earlier on glass screen, prepare calcium-fluoride thin film with evaporation technique again, thickness is 400 nanometers.Prepare painted primary colours fluorescent material then, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
Embodiment 10
Earlier use the Prepared by Sol Gel Method porous silicon oxide membrane on glass screen, thickness is 400 nanometers, and the porous silica porosity that obtains is 60%.Prepare black matrix, painted primary colours fluorescent material again, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
On glass screen, prepare the porous silica dielectric layer with thick film technology earlier, 5 microns of thickness, used porous silica porosity is 70%.Prepare black matrix, painted primary colours fluorescent material again, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1.5 times, and contrast improves more than 1.5 times.
Earlier prepare calcium-fluoride thin film with evaporation technique on glass screen, thickness is 400 nanometers.Prepare black matrix, painted primary colours fluorescent material again, prepare anode aluminium film at last.Zhi Bei phosphor screen is compared with traditional phosphor screen like this, and luminous efficiency improves more than 1 times, and contrast improves more than 1 times.
Claims (7)
1. the high-luminous-efficiency high-contrast phosphor screen in the vacuum electronic emission display device mainly comprises glass screen 10, black matrix 11, color filter film 13,15,17, primary colours fluorescent material 14,16,18 and anode aluminium film 19.It is characterized in that: also comprise one deck low refractive index dielectric layer 12 that is arranged between glass screen and the color filter film, the ranges of indices of refraction of this layer is 1.0-1.4, and thickness is greater than 0.2 micron.
2. the high-luminous-efficiency high-contrast phosphor screen in the vacuum electronic emission display device mainly comprises glass screen 10, black matrix 11, primary colours fluorescent material 14,16,18 and anode aluminium film 19.It is characterized in that: also comprise one deck low refractive index dielectric layer 12 that is arranged between glass screen and the primary colours fluorescent material, the ranges of indices of refraction of this layer is 1.0-1.4, and thickness is greater than 0.2 micron.
3. according to claim 1 and 2 described high-luminous-efficiency high-contrast phosphor screens, it is characterized in that: black matrix is arranged between glass screen and the low refractive index dielectric layer.
4. high-luminous-efficiency high-contrast phosphor screen according to claim 1, it is characterized in that: black matrix is arranged between low refractive index dielectric layer and the color filter film.
5. high-luminous-efficiency high-contrast phosphor screen according to claim 2, it is characterized in that: black matrix is arranged between low refractive index dielectric layer and the fluorescent material.
6. according to claim 1 and 2 described high-luminous-efficiency high-contrast phosphor screens, it is characterized in that: the low refractive index dielectric layer adopts the membrane structure by the thin film technique preparation.
7. according to claim 1 and 2 described high-luminous-efficiency high-contrast phosphor screens, it is characterized in that: the low refractive index dielectric layer adopts the bulk structure by the thick film technology preparation.
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| CN 200610087255 CN101090057A (en) | 2006-06-15 | 2006-06-15 | High luminous effect high contrast screen in vacuum electronic emission display device |
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| CN 200610087255 CN101090057A (en) | 2006-06-15 | 2006-06-15 | High luminous effect high contrast screen in vacuum electronic emission display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141716A (en) * | 2015-07-28 | 2015-12-09 | 张家港保税区佰昂特种玻璃有限公司 | Luminescent mobile phone glass screen processing technology |
| CN105467669A (en) * | 2016-02-03 | 2016-04-06 | 京东方科技集团股份有限公司 | Display substrate, preparing method thereof, display panel and display device |
-
2006
- 2006-06-15 CN CN 200610087255 patent/CN101090057A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141716A (en) * | 2015-07-28 | 2015-12-09 | 张家港保税区佰昂特种玻璃有限公司 | Luminescent mobile phone glass screen processing technology |
| CN105467669A (en) * | 2016-02-03 | 2016-04-06 | 京东方科技集团股份有限公司 | Display substrate, preparing method thereof, display panel and display device |
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