EP2494403A2

EP2494403A2 - Device, in particular for a display unit

Info

Publication number: EP2494403A2
Application number: EP10771655A
Authority: EP
Inventors: Marten Walther; Stephan Reimann
Original assignee: Schott AG
Current assignee: Schott AG
Priority date: 2009-10-28
Filing date: 2010-10-12
Publication date: 2012-09-05
Also published as: EP2733522B1; WO2011050908A2; JP2013509602A; US20120268695A1; EP2733522A1; JP5744890B2; US10384422B2; WO2011050908A3

Abstract

The invention relates to a device, in particular for display units, comprising a first disk-shaped element and a second disk-shaped element, and a coating introduced between the first disk-shaped element and the second disk-shaped element. The invention is characterized in that the coating is an IR-reflecting coating, which is applied to the first and/or second elements, and that the at least first disk-shaped element, the at least second disk-shaped element, and the coating form a composite, and that the space between the disks is filled with a filling material.

Description

Device, in particular for a display device

The present invention relates to a device, in particular for a

Display device.

According to a first aspect, the invention relates to a device for a display device having at least a first disk-shaped element and a second disk-shaped element and a coating introduced between the first and second disk-shaped element. According to a second aspect, the invention relates to a device for a display device, comprising a first disc-shaped element and a polarizing filter.

In particular, in display devices, preferably in the outdoor area

Find application, there is the problem that the display devices must be cooled by means of complex refrigeration units to prevent inadmissible heating the same.

This is particularly problematic when the display devices are exposed in the outdoor area of high solar radiation. Display devices may include, for example, displays. The displays can themselves be designed with polarizers or emit their own polarized light.

In order to prevent heating by solar radiation is at

Display devices, eg. B. Displays according to the prior art

For example, an infrared radiation-reflecting SIPLEX solar control film produced as a laminated glass by the company Haller (Kirchlengern) on the glass, in particular the disc, preferably applied to the lens of the display device. In such a solution, however, still results in a transmission in the IR range, that is, in the wavelength range of 780 to 2000 nm of 28%, which leads to a heating of the rear lying with such a screen equipped display device by light irradiation, In particular, solar radiation can not be sufficiently avoided. For heating by solar radiation is in particular radiation with

Wavelengths in the range 700 nm to about 1200nm relevant since the

Solar spectrum in this wavelength spectrum still has significant energy. Furthermore, a high proportion of radiation is absorbed by the SIPLEX solar control film, so that the windscreen heats up strongly and dissipates the heat, for example, to the display behind it.

Other films that reduce the heat input from external sunlight are, for example, laminates containing an XIR film from Southwall, Palo Alto, California, USA (Internet: www.southwall.com). In this film, a higher proportion of the unwanted sunlight is reflected in the IR spectral range, so that a slight reduction of the radiation is seen on the display or display device arranged behind it.

However, this XIR film is very absorbent, so that the front glass itself is heated more than when using the Siplex solar control film.

In addition, the XIR film is incorporated in a laminate composite, resulting in strong optical inhomogeneities, so that a practical use in the field of display glasses is not possible.

A disadvantage of the aforementioned films is that low transmission is paid for with a high absorption. This causes the windscreen, z. As a display device heats up and heat by the heat in the overall system, here the display device is registered

Another disadvantage of the aforementioned solutions was that the influence on the infrared spectral range, i. in the wavelength range of 780 to 2500 nm, limited. However, especially in the visible range from 380 nm to 780 nm, a significant proportion of the solar radiation acts and, in addition to the infrared range, leads to considerable increases in the temperature of the display behind a windshield of a display device. Especially in areas with high

Sun exposure causes this to heat up behind you with a so equipped disk lying display device by light irradiation, especially solar radiation can not be sufficiently avoided and the display above its maximum allowable

Working temperature is heated. This causes the display to turn black and become unreadable. For heating by solar radiation, the entire spectrum with wavelengths in the range 300 nm to about 2500 nm is relevant. In general, the known solutions for reducing solar radiation aim only at the infrared range of 780 - 2500 nm, in which the human eye is not sensitive and leave the visible

Spectral range substantially unaffected, although the solar spectrum in this wavelength range still has significant energy.

Passive methods for reducing the energy input in the visible

Wavelength range are coatings that reflect a high proportion of the visible light and thus reduce the energy input. An example of this is the product MIRONA from SCHOTT AG, which has a reflection of about 35% in the visible range. The disadvantage of this solution is that the contrast of the underlying display device is lowered significantly by this reflectivity. The ratio of the desired radiation from the display to the viewer with respect to the radiation reflected from the environment at the front of the display of the display to the viewer becomes progressively worse at higher ambient brightness and often results in complete unreadability of the display in bright daylight. As a solution to improve this contrast are often here with a

Anti-reflective coating coated discs used, but then have no effective sunscreen in the visible range.

Another disadvantage of the films, especially when used in a

Display device was that they had poor optical properties.

From US 2009/0237782 A1, a laminated glass pane with an IR-reflective layer has become known, in particular for large-area glazings. DE-A-15 96 810 shows a large-area glazing with a metal layer, in particular a gold or copper layer, the infrared radiation and

long-wave light reflects.

From DE-C-199 27 683 a solar and heat radiation reflecting laminated glass pane has become known.

DE-A-195 03 510 shows a method for producing an IR-reflecting laminated glass pane.

DE-T-694 30 986 shows a light valve with a low coating

Emissivity as an electrode.

Display devices have become known from DE-A-28 24 195 or JP-A-2006-162890.

The object of the invention is thus to provide a device which avoids the disadvantages of the prior art.

According to the invention this object is achieved according to a first aspect of the invention in that in a system consisting of a first

disc-shaped element and a second disc-shaped element, an IR-reflective coating between the first disc-shaped and the second disc-shaped element is introduced, in such a way that the first and the second disc-shaped element form a composite, wherein the space between the discs with a solid or liquid filling material is filled. The filler is therefore not gaseous, as in

Insulating glass composites.

Such a composite makes it possible to use IR-reflecting coatings, for example based on transparent metal layers, in particular silver layers, So-called low-E coatings, can be used, which have a very high reflectivity in the range of IR radiation from 780nm to 2000nm.

By incorporating and protecting the IR-reflective coating between the first and second disk-shaped elements, it is possible to use highly efficient but corrosion-prone silver in or

To use multiple layers as IR-reflective coatings and to protect against chemical and mechanical attack, especially oxidation.

Such, highly reflective IR coatings based on silver layers are referred to as so-called "soft coatings" and are for example described in detail in "Hans-Joachim Gläser, thin-film technology on flat glass, pages 167-171". The disclosure of this document is incorporated in the present application in full. To the susceptibility to corrosion between the first disc-shaped element and the second

To minimize disc-shaped element introduced coating is advantageously provided that the edge of the first disc-shaped element and / or the second disc-shaped element has no IR-reflecting coating. It is particularly preferred for the IR-reflecting coating to have a very high reflectivity in the wavelength range from 780 nm to 2500 nm. Ideally, the reflectivity would be 100% for wavelengths in the range of 780 nm to 2500 nm.

If we approximate the radiation emitted by the sun, that is, the spectrum of sunlight, through a Planckian radiator with a temperature TSTRA _H LER = 5762 K, then one can deduce that neglecting the UV component with wavelengths <350 nm approximately 55% of the energy or intensity of sunlight in the visible wavelength range of 350 nm to 780 nm and about 45% of the energy in the IR wavelength range of 780 nm to 2500 nm. At an ideal IR level with a reflectivity of 100% in

Wavelength range from 780 nm to 2500 nm would thus 45% of

Sunlight, namely the IR component reflected. In order to indicate the quality of the reflectivity of the coating for IR radiation, the IR solar reflectivity is defined in the present application. As IR solar reflectivity, the spectral reflectivity of the IR coating in the

Wavelength range of 780 nm to 2500 nm folded with the relative intensity of the approximated spectrum of sunlight for a Planckian radiator with a temperature of 5762 K defined in this application. While the so-defined IR solar reflectivity for films according to the prior art, so for example XIR films in the laminate composite is about 40%, systems are characterized with an IR coating according to the invention by an IR solar reflectivity in the range of 45% to 95% , preferably from 50% to 80%.

As a solid or liquid filling material, which is introduced between the two discs, polymer materials are preferably cured

inorganic materials, such as cast resin or foil, such as PCB films, PVB films, EVA films used.

In addition to the IR radiation-reflecting coating according to the invention, the aforementioned films may also comprise further coatings, for example further low-E layers applied to the film.

The IR radiation highly reflective coating can be applied either to one or both of the disk-shaped elements or to the film laminated between the wheels.

To produce the composite, for example by means of a polymer material, a PCB film, a PVB film or an EVA film, the polymer material or film is liquefied or softened by pressure and bonded to the first disk-shaped element and the second disk-shaped element, resulting in the composite. In this case, it is preferred that the highly reflective IR coating is bonded directly. It is particularly preferred in terms of corrosion resistance, when the edge of the first disc-shaped element and the second disc-shaped element comprises a sealing material. One possible sealing material which can be used for this purpose is, for example, butyl rubber, which is characterized by low gas permeability. An alternative sealing option is the seal by a circumferential aluminum foil, which in turn is glued to a plastic with low gas permeability. In addition to the above-mentioned low-E coating based on silver layers such as in Hans-Joachim glasses, "thin-film technology on flat glass", Verlag Karl Hoffmann, 1999, pp. 155-200 and 219-228, respectively

described, other layers with very good conductivity can be applied. Examples include gold or aluminum layers.

The edge of the first and / or second disc-shaped element should be designed so that the applied low-E layers do not corrode from the side of the composite ago. As an effective means, for example, the

Edge layers are used, in which the low-E layer does not go through to the edge and so the laminate can be sealed at the edge directly between the upper and lower glass.

Preferably, at least 5 mm of the disk are formed as an edge, in which the IR-reflecting coating is interrupted or has no IR-reflecting coating. The maximum border of the border is chosen so that the visible area is not disturbed for the viewer of the laminated glass pane.

In order to increase the contrast and thus the display quality, in particular when using the glass in the display area, ie for display devices, it is provided that the first and / or the second disk-shaped element is equipped with an anti-reflection or anti-reflection coating. By providing the device with at least one

Antireflective coating or antireflection coating, in particular, the reflection in the visible wavelength range of 380nm to 800nm of a disk-shaped element is significantly reduced and thus the contrast significantly increased compared to facilities without anti-reflective coating. Preferably, the reflectance R _V i _{S is} reduced by the antireflection coating by 10% to 4% compared to a disc-shaped element not provided with an antireflection coating. If the reflectance R _V i _{S of} the disk-shaped element without antireflection coating is, for example, 8%, then the reflectance R _V i _{S can be} reduced to 0.1% to 6%, preferably to 0.2% to 4%, by the antireflection coating. The aforementioned reflectance R _v , s is a reflectance with standard light D65 (artificial daylight) folded with the eye sensitivity. Although the reflection for individual wavelengths may be greater than, for example, 2%, the standard light D65 may have a value R _V i _S of 1% or less.

In order to achieve a high IR reflection and in particular an IR solar reflectivity in the range 45% to 95%, preferably from 50% to 80%, for the overall system of the two disk-shaped elements and the introduced between these solid and liquid filling materials, the lion

Coating system based on at least one silver layer for

Achieving high IR reflection, adjusted. For this purpose, the layers surrounding the silver are adapted so that the anti-reflection effect on the refractive index of the solid or liquid filler, in particular the laminating film, for. B. the PVB film is adjusted. For example, such refractive index matching can be achieved with cathode sputtering. For example, the

Sputtering on a variety of oxidic materials, by means of which such an adjustment can be carried out. As a basis of the low-E coatings, for example, the company of ARCON (Bucha,

Feuchtwangen) Sunbelt Platinum, which has been modified according to the rules given above, ie to the Refractive index of the solid or liquid filler material, in particular the films is adjusted.

In particular, by incorporating matching layers, which preferably include oxide or oxide conductive layers, it is possible for the

Reflectance Rvis of the device <2%, in particular <1%.

By reducing the reflection at the surface of the composite caused by the anti-reflection coating or anti-reflection coating and within the composite by the low-E layer and optionally

Adjustment layers will contrast with one not with one

Antireflective coating provided element significantly increased. When

Anti-reflection coatings are preferably used interference layer systems. In such systems, at the interfaces of

Antireflective coating reflects light. The at the interfaces

reflected waves can even completely cancel themselves out by interference if phase and amplitude conditions are fulfilled.

Such anti-reflection coatings are realized, for example, in the products AMIRAN, CONTURAN, or MIROGARD from Schott AG. With regard to an interference layer system for broadband antireflection coating, reference is also made to EP-A-1248959, the disclosure content of which is incorporated in full in the present application. In addition to the reduction of the reflection R _vis in the optically visible spectral range 380nm to 780nm by the anti-reflection coating also a

Increasing the transmission can be achieved preferably by up to 10%.

The antireflective or antireflective coating is preferably provided on a side of the first and / or the second disc-shaped element which points outward, ie towards the air. As antireflection coatings or antireflex coatings come layers that are different Processes are made, into consideration. Such layers can be prepared by a sol-gel process, sputtering, etching or CVD processes. Specifically, the anti-reflection coating can be applied using one of the following application methods:

The anti-reflective coating is using the

Liquid technology applied, wherein the layer applied by the liquid technologies layer is provided by means of one of the following techniques:

the antireflective coating is applied with the aid of the sol-gel

Applied technology;

The anti-reflective coating is called

Single interference coating made from sol-gel technology;

the anti-reflection coating is produced as a multiple interference coating from the sol-gel technology;

the anti-reflection coating is produced as a triple-interference coating from the sol-gel technology, wherein the first layer has a refractive index between 1, 6 and 1, 8, the second layer has a refractive index between 1, 9 and 2.5 and the Refractive index of the third layer is between 1, 4 and 1, 55,

The anti-reflective coating is using a

High vacuum technology produced, with the help of the

High-vacuum technology applied layer is provided with one of the following techniques:

The anti-reflective coating is using a

High vacuum technology manufactured as multiple interference layer system;

The anti-reflective coating is using a

High vacuum technology produced as single layer system; The anti-reflective coating is made from one

Sputtering process produced under high vacuum;

The anti-reflective coating is made from one

Vapor deposition process under high vacuum,

the anti-reflection coating is produced by means of a CVD process, wherein the layer applied by means of a CVD process is provided by one of the following techniques:

the anti-reflective coating is made from an online CVD process;

the anti-reflective coating is taken from an offline CVD

Process made,

the antireflective coating is produced by means of an etching process, wherein the layer applied by means of an etching process is provided by one of the following techniques:

The anti-reflective coating is using a

Etching process produced as a porous layer;

The anti-reflective coating is using a

Etching process produced as a light-scattering surface.

As a use for the invention, which is particularly characterized in that it has on the one hand a high IR reflectivity, use in the field of display devices, in particular display devices in the outdoor area, and here preferably liquid display devices into consideration. When using an antireflection coating, high contrasts,

For example, contrasts ranging from 40 to 80 are achieved without limitation. In addition to the device, in particular the disc for a display device, the invention also provides a display device with a display or a display device and an auxiliary disc

The attachment disk as a device according to the invention comprising two disk-shaped elements with intervening IR elements. reflective coating is formed. As display devices in particular liquid crystal display devices but also OLED display devices or LED display devices into consideration. In addition to use in display devices, use as image glazing is also possible.

According to the invention, the object stated in the introduction is achieved according to a second aspect of the invention in that a device for a

Display element is provided which consists of at least a first disc-shaped element and at least one polarizing filter. In this case, the polarizing filter is applied in such a way that the emitted, polarized light of a

Display device is only slightly attenuated by the device. This is achieved according to the invention by the passage direction of the polarizer of the

Device is aligned such that the polarizing filter transmits the greatest possible proportion of the light emitted by the display device light. As a result, the useful signal of the display device is transmitted to a high proportion of greater than 70%, preferably greater than 80% through the device, but at the same time the sunlight with the Schwingengsebene orthogonal to the

Forward direction of Polfilters attenuated. For a good readability of the display of a display, the transmission of the emitted light of the

Display device through the device more than 50%, preferably more than 70%. Between the device and the display device, a gap is formed, which is filled with a gaseous medium. The gaseous

Medium may be air or nitrogen or a noble gas such as helium or argon. The distance between the device according to the invention and the

Display device, which forms the gap, is in the range of 1 to 500 mm, preferably 5 to 100 mm. Such a structure allows the polarized visible radiation, defined herein as the spectral range of 380 nm to 780 nm wavelength, to pass from the high-transmission display device of greater than 70%, preferably greater than 80%, to the viewer during the proportion of unpolarized sunlight in the visible wavelength range of the radiation reaches only about 50% of the display device.

In addition, in this structure, of course, all solutions described above for reducing the transmission in the infrared portion of

Solar radiation, in the infrared wavelength range 780 nm to 2500 nm, are used to suppress this spectral component. In particular, the measures described according to the first aspect of the invention can be used for

Reduction of the transmission of the infrared portion of the sunlight through the device are used to the display device down.

To solve the problem according to the second aspect of the invention, polarizing filters are used! which as standard in the here mentioned

Display devices are used. Display devices according to the invention described are also referred to as LC displays, liquid crystal displays, liquid crystal displays or TFT screens in which the light is generated with a backlight and a polarizing filter and by rotation of the polarization direction by liquid crystal elements in conjunction with another front polarizing filter in a change in intensity is converted. It can be improved by the described embodiment, but also all other display systems that emit polarized light.

In an alternative embodiment of the invention, the display device may be modified so that the polarizing filter of the device can simultaneously serve as the front filter of the display device. Also in this case, a space between the device and the display device, especially the liquid crystal region, is necessary to reduce the heating of liquid crystals in the display device. A polarizing filter is a polarizing filter or polarizer that only determines

lets through aligned light or light waves. Polfilter can by a

Number of different technologies can be realized. The best known

Technology works with the stretching of films that make up layers

Polyvinyl alcohol and in which suitable particles such as e.g.

Dichroic dyes, very fine carbon filaments or diffused iodine are incorporated. By plastically stretching the film in one direction, the molecules are aligned in parallel along the drawing direction. These molecules absorb strongly anisotropic light after alignment. While unpolarized light which passes through a polarizing filter is almost not absorbed in a plane of vibration, in particular, the perpendicular orthogonal vibration plane of the light perpendicular thereto is almost completely absorbed. the

One skilled in the art is aware that for use in the invention

Facility but all available polarizing filters can be used, provided that you at least in the visible range of solar radiation a significant

Have polarization effect in transmission. In polar filters, which also affect the infrared portion of the light, the positive effect is further enhanced. Polarizers are offered by many companies. As an example, the company ITOS from Mainz is called, which offers polarizing filters and also technical information on the operation of the polarizers on the Internet 'offers.

If we approximate the radiation emitted by the sun, ie the spectrum of the sunlight, through a Planckian radiator with a temperature T _S TRAHLER = 5762 K, one can deduce that neglecting the UV component with wavelengths <380 nm approximately 55% of the intensity of sunlight in the visible wavelength range from 380 nm to 780 nm and approximately 45% in the IR wavelength range of 780 nm to 2500 nm. When using the polarizer described here can be from the visible part of the spectrum (ie about 55% the spectral intensity) half of the radiation in the polarizer

be absorbed (namely, essentially the orthogonal radiation to Orientation of the pole filter) and no longer contribute to the heating of the

Display device at. This proportion is thus about 27% of the energy that can be avoided, ie half of the above-mentioned spectral intensity of 55%.

The described polarizing filters are produced in large quantities for the display industry. In this case, the polarizing filter is usually provided with a self-adhesive layer in order to be attached directly to the front screen of the display device. The front side of the polarizer can optionally be equipped with a

Antireflection coating be minimized, which minimizes annoying reflections on the front and contributes to increase the contrast in bright surroundings.

The device according to the second aspect of the invention can be realized as a front and protective screen for a display in various ways.

In the simplest form, the polarizing filter described above is mounted on a first disc-shaped element, preferably on a solid glass plate, thus forming a simple composite. If such a composite is to be used as an attachment or as a protective screen for a display device, then the polarizer described above becomes a first disc-shaped one

Element attached so that the polarization direction for high transmission is parallel to the polarization direction of the front polarizer in the display element.

However, the polarizer described above can also be used between a first

disc-shaped element and a second disc-shaped element are laminated, so that a solid composite is formed, which has an increased mechanical strength and can be allowed, for example, as a composite safety glass.

As a solid or liquid filling material, which between the two

disc-shaped elements is introduced are preferred

Polymeric materials, cured inorganic materials such as cast resin or foil, such as PVB (polyvinyl butyral) films, EVA (Ethylene vinyl acetate) films, PA (polyacrylate) films, PMMA

(Polvmethylmethacrylat) films or PUR (polyurethane) films used.

With the polymer materials described above, in addition to the introduction of a polarizer according to the invention, it is also possible to introduce IR radiation-reflecting coatings or IR-reflecting films into the composite, for example further low-E layers applied to film, as described in accordance with the first aspect of the invention. Thus, the protective effect in the

Infrared range can be additionally improved. Low-E coatings are an example of IR-reflective coatings, for example, based on transparent metal, in particular silver, which is a very high

Have reflectivity in the range of IR radiation from 780 nm to 2500 nm.

To produce the composite, for example by means of a polymer material such as a PVB film, EVA film, PA film, PMMA film or PUR film, the polymer material or the film is liquefied or softened by pressure and with the first disc-shaped element and the glued second disc-shaped element to give the composite.

In particular, when using the device in the display area the

Contrast and thus to increase the display quality for a display device, it is provided in a further embodiment of the invention that the first and / or the last surface of the composite is coated with an anti-reflective or anti-reflective coating.

By coating at least one surface of the composite with an antireflection coating or antireflection coating, in particular the reflection in the visible wavelength range from 350 nm to 780 nm of a device is markedly reduced and thus the contrast is markedly increased compared to devices without antireflection coating. This contrast refers to the ratio of the light emitted by the display with respect to the ambient light reflected by the lens. Preferably, the Reflectance R _V i _S by the anti-reflection coating by a factor of 4 to 50 compared to a non-coated with an anti-reflective coating disc-shaped element reduced. If the reflectance R _V j _{S of} the disk-shaped element without antireflection coating is, for example, 8%, then the reflectance R is reduced by the antireflection coating to 0.1% to 6%, preferably to 0.2% to 4%. The above-mentioned reflectance R _vis is a reflectance under standard light D65 (artificial daylight) folded with the eye sensitivity. Although the reflection for individual wavelengths may be greater than, for example, 2%, the standard light D65 may have a value R _V i _S of 1% or less.

By reducing the reflection at the surface of the composite caused by the anti-reflection coating or anti-reflection coating and within the composite by a low-E layer and optionally

Adjustment layers will contrast with one not with one

Antireflective coating provided element significantly increased. When

Antireflective coating reflects light. The at the interfaces

Such anti-reflection coatings are realized, for example, in the products AMIRAN, CONTURAN, or MIROGARD from Schott AG.

With regard to an interference layer system for broadband antireflection coating, reference is also made to EP-A-1248959, the disclosure content of which is incorporated in full in the present application. In addition to the reduction of the reflection R _vis in the optically visible spectral range 380nm to 780nm by the anti-reflection coating also a

Increasing the transmission can be achieved preferably by up to 10%. The AR coating, or AR coating, is preferably provided on a side of the first and / or the second disc-shaped element facing outward, ie towards the air. When

Anti-reflection or anti-reflective coatings come layers that are prepared by different methods, into consideration. Such layers can be prepared by a sol-gel method, sputtering method, etching method or CVD method. It is also possible to deposit directly on the polarizing filter such an AR coating. Specifically, the anti-reflection coating can be one of the above

described application method with liquid technology,

High vacuum technology, CVD method or etching process can be applied.

The invention according to the second aspect is characterized in particular by the passage of the light through the device as appropriate

Arrangement of the polarization direction of the polarizing filter is a vibration level of the light in the optical spectral range between 380 nm and 780 nm against the corresponding orthogonal vibration level is strongly suppressed. Typically, technical polarizers achieve optically visible

Wavelength range suppression of the light in a polarization direction of more than 1: 1000; however, the described positive effect of

Sunscreening effect can be achieved already from suppression degrees of better than 1: 5 in the optically visible spectral range. The transmission of the light in the optical spectral range of 380 nm and 780 nm through the device according to the invention is in a ratio of passage through the device in parallel to orthogonal polarization direction of the polarizer, measured with polarized light of at least 3 to 1, preferably 5 to 1, especially preferably above 10 to 1. When using an antireflection coating, high contrasts, for example contrasts ranging from 40 to 80, can be achieved without limitation. Such devices according to the invention may be in the range of

Display devices, in particular display devices in the outdoor area and are preferably used here for liquid crystal display devices. In this case, the device according to the invention is arranged as a front or protective screen in front of the display device, wherein preferably a distance is provided between the device and the display device, which is filled by a gaseous medium. In particular, for outdoor use, the device according to the second aspect of the invention may be implemented in a further embodiment with an edge seal, which has the further advantage of

Resistance to high humidity has. It is particularly preferred with regard to the corrosion resistance of a pole filter if, in a composite, the edge of the first disk-shaped element and of the second disk-shaped element comprises a sealing material. A possible

Sealing material, which can be used for this purpose, for example

Butyl rubber, which is characterized by low gas permeability. An alternative sealing option is the seal by a circumferential

Aluminum foil, in turn, with a plastic with less

Gas permeability is bonded.

The edge of the first and / or second disk-shaped element should be designed so that the applied polarizing filter and, if appropriate, additionally applied low-E layers do not corrode from the side of the composite. As an effective means, for example, the edge delamination can be used, in which the low-E layer and the polarizing filter does not go to the edge and so the laminate can be sealed at the edge directly between the upper and lower glass.

Preferably, at least 5 mm of the disc are formed as an edge, in which the polarizing filter and optionally the IR-reflecting coating is interrupted or having no IR-reflective coating and no polarizing filter. The maximum border of the border is chosen so that the visible area is not disturbed for the viewer of the laminated glass pane.

For a display device, the invention also provides a display device with a display or a display device and an attachment disc, wherein the attachment disc as the device according to the invention comprises at least one disc-shaped element with polarizer applied and a space is arranged between the display or the display device and the attachment disc is. Come as a display devices

In particular, liquid crystal display devices into consideration, but also other display devices in which the light emitted by the display is radiated highly polarized.

The invention will be described below with reference to the figures, in which:

1a-b show the basic structure of a pane according to the invention with an IR-reflecting coating according to a first aspect of the invention;

A liquid crystal display device with an inventive

Disc according to FIGS. 1a-1b;

Fig. 3a-b the reflection and transmission curves of the invention

IR coating as a function of the wavelength.

4a-4d, the basic structure of a device according to the invention with integrated polarizing filter according to a second aspect of the invention. 5a-5b, the basic structure of a device according to the invention with integrated polarizing filter and additional IR protection device;

Fig. 6 Structure of an LC display device for direct application

Solar radiation with a device according to the invention according to one of the figures 4a-4d or 5a-5b;

7 shows the transmission curves of a polarizer according to the invention laminated between two 4 mm float glasses in parallel (same)

Alignment of the polarizer with the analyzer and perpendicular to it as a function of the wavelength.

Fig. 8, the reflection curves of an inventive between two

one-sided anti-reflective 4 mm float glass laminated poly filter with parallel (equal) orientation of the polarizer with the analyzer and perpendicularly thereto as a function of the wavelength.

FIG. 1a shows a plan view of a device 1 according to the invention and FIG. 1b a section along the line A-A according to the first aspect of the invention.

The top view according to FIG. 1a shows the first disc-shaped element 3 according to a first aspect of the invention. The first disc-shaped element 3 comprises an edge 5 which is not provided with an IR-reflecting coating 9. The structure of the system or device 1, which is also referred to as a laminated glass element, of two disk-shaped elements 3, 7 can be seen more clearly from the sectional view along the line A-A according to FIG. Again, 3 denotes the first disk-shaped element. The IR-reflective

Coating is introduced between the first disk-shaped element 3 and the second disk-shaped element 7 and designated by the reference numeral 9. The IR-reflective coating forms together with the two

disk-shaped elements a composite or a composite disk. To form the composite is in the space between the two discs. 3 and 7, a solid or liquid filler material 8, in particular a polymer material or a solidified inorganic substance introduced. In contrast to an insulating glass composite in which two panes are arranged separated from one another by a gap with a gaseous medium, in the device according to the invention, the disk-shaped elements 3, 7 via the filling material 8 and the IR reflection coating 9 directly to each other, resulting in a laminated glass element. As can be seen from the sectional view according to FIG. 1 b, the edge 5 of both the disk-shaped element 3 and the disk-shaped element 7 is not provided with a filling material 8 or an IR-reflecting coating 9. In the border area can a

Sealant (not shown) are introduced, which prevents by

Diffusion along the filling material, for example. A film, moisture in the

Gap between the first disc-shaped element and the second disc-shaped element penetrates and thus the lying between the first and the second disc-shaped element IR-reflective coating 9, which is preferably a low-E coating, is protected from corrosion. Also indicated are the transmission T _vis or T (IR) and the reflection R _vis or the IR solar reflectivity of sunlight incident on the outside OUTSIDE comprising visible light (VIS) and IR radiation for the laminated glass element or device 1. In the visible wavelength range a high

Transmission T _vis and a low reflection R _vis , the preferred R _V i _S <2%, in particular <1% to achieve oxidic and / or conductive oxide matching layers 23.1, 23.2 may be provided, the reflectivity R _V j _S within the Minimize device 1 or laminated glass element. Such layers 23.1 are already used below the low-E layer 9 to the silver layer to the glass of the second disc-shaped element. 7

adapt. A similar layer structure 23.2 can then also be used above the low-E layer 9, so that on both sides of the low-E layer 9 approximately symmetrical layer structures arise. These layers are composed of diffusion barrier layers to protect the silver of the low-E layer as well as matching layers of other oxides or nitrides, whose refractive index jumps and layer thicknesses are then designed as an Anpasschicht.

The formation of an IR-reflecting coating, in particular a low-E coating based on silver layers, is described in Hans-Joachim Gläser, "Thin Film Technology on Flat Glass", pp. 167-171, the disclosure of which is incorporated in full in the present application, While other metals such as gold or aluminum are also possible as IR-reflective coatings, silver is good for its goodness

Color effect preferred.

When using the device, especially in the outdoor area for

Display devices, it is advantageous if, to increase the contrast when exposed to direct sunlight, the outside OUTSIDE, that is, the air-facing side 13 of the device with an antireflection coating or an anti-reflection coating 20 is provided. In the present case, only the side 13 of the first disc-shaped element is provided with an antireflection coating or antireflection coating 20. Of course, in addition, the outside could be inside, d. H. the side 11 of the second disc-shaped element 7 be provided with an antireflection coating.

As antireflection coating or antireflection coating, for example, produced by sol-gel method or sputtering

Anti-reflective coatings are used. Below are two

Embodiments for such anti-reflection or

Antireflection coatings are given:

Example 1 :

One-sided antireflection coating produced by the sol-gel method:

The coating consists of three individual layers each and has the structure: substrate + M + T + S. The single layer marked T contains titanium dioxide ΤΊΟ2, the single layer marked S contains silicon dioxide S1O2 and the single layer marked M is drawn from each of S and T mixed solutions. The float glass substrate is thoroughly cleaned before coating. The immersion solutions are each applied in rooms conditioned at 28 ° C. at a relative humidity of 5 to 10 g / m 3, and the drawing speeds for the individual layers M / T / S are approximately 275/330/288 mm / min. The pulling of each gel layer is followed by a bake process in air. The bakeout temperatures and bakeout times are 180 ° C / 20 minutes after preparation of the first gel layer and 440 ° C / 60 minutes after preparation of the second and third gel layers. In the case of the T-layers, the immersion solution (per liter) is composed of: 68 ml of titanium n-butylate, 918 ml of ethanol (abs), 5 ml of acetylacetone and 9 ml of ethyl butyl acetate. The dip solution for the preparation of the S layer contains: 125 ml of silica methyl ester, 400 ml of ethanol (abs), 75 ml of distilled H 2 O, distilled 7.5 ml

Acetic acid and is diluted after a rest period of about 12 hours with 393 ml of ethanol (abs). The coating solutions for producing the intermediate refractive index oxides are prepared by mixing the S + T solutions

groomed. The layer marked M is drawn from a dipping solution having a silicon dioxide content of 5.5 g / l and a titanium dioxide content of 2.8 g / l. The applied wet-chemical sol-gel process allows as

Dipping process the economic coating of large areas, whereby two panes are glued together before the dipping process, so that the necessary one-sided anti-reflection effect is achieved. The adhesive is chosen to burn at 440 ° C within the burn-in time described above so that the slices leave the process separately.

Example 2:

One-sided antireflection coating produced by the sputtering method:

The coating is coated in a continuous flow system with an MF sputtering process by magnetron sputtering, wherein the substrate is positioned on a so-called carrier and transported on the latter by the sputtering system. Within the coating system, the substrate is first to "Dewatering" the surfaces preheated to about 150 ° C. Subsequently, an antireflective system (as an example consisting of four layers) is prepared as follows:

A) sputtering a high-index layer at a feed rate of 1.7 m / min, the carrier oscillating in front of the sputtering source and

while depositing a layer of 30 nm thickness. The layer is produced by adding argon and reactive gas while controlling the reactive gas to a plasma impedance. The process pressure is determined in particular by the amount of argon, which leads to typical process pressures in the range between 1 ^* E-3 and 1 ^* E-2 mbar. The deposition in the plasma takes place via a pulsation.

B) sputtering a low refractive index layer with a feed of 2.14 m / min. In this case, a layer of thickness 30.5 nm is produced. The layer production takes place according to the deposition under layer 1.

C) sputtering of a high-index layer corresponding to layer 1. Here, a layer of thickness 54 nm is produced at a feed rate of 0.9 m / min.

D) Sputtering of a low-refraction layer according to layer 2. At a feed of 0.63 m / min, a layer of thickness 103 nm is produced. Subsequently, the coated substrate is discharged with the carrier via a transfer chamber.

With the antireflection or antireflection coatings, as described above, a contrast defined as T _vis / Rvis can be achieved in the range from 10 to 60, preferably from 20 to 60, in particular from 40 to 50 under standard light Contrast values are less than 7. R _vis denotes the reflectance of a layer at standard light D65, T _V i _S den

Transmittance. d. H. the reflectance or transmittance in

visible wavelength range from 350 to 780 nm. FIG. 2 shows a display device 1000 with an inventive device

Device 101 according to a first aspect of the invention as an attachment disc for a display, here a liquid crystal display 130 shown. As shown in FIGS. 1a-1b, the device 101 according to the invention is provided with a first one

disc-shaped element 103 and a second disc-shaped element 107 and an intermediate IR-reflecting layer 109 and an applied to the outside of the first disc antireflection or anti-reflection coating 120. The liquid crystal display 130 lying behind the device 101 designed as an attachment disk comprises, without limitation, a liquid crystal 133 with illuminants 135 introduced between two disks 131.1, 131.2. The entire liquid crystal display 130 is integrated in a housing 137. The liquid crystal display 130 is only one possible display, other possible displays include controllable LED or OLED. Although a liquid crystal display is given, the invention is not limited thereto.

The inventive device 101 as an attachment lens largely prevents light from the sun 150 from heating the space between the attachment lens and the liquid crystal display 130. Nevertheless, due to the own heat development of the liquid crystal display 130, it is necessary to actively cool it with a cooling device 160.

However, the cooling device 160 can be dimensioned substantially smaller than in the prior art, since a heat input due to the solar irradiation between the disc and the liquid crystal display does not take place.

FIG. 3a shows the reflectivity for devices with different layer systems over a wavelength of 400 nm to 2400 nm.

In Figure 3b, the associated transmission values are the same

Layer systems shown with the same numbering. Reference numeral 1000 denotes a system of silver-based

Coating as IR-reflecting layer of the company ARCON (Feuchtwangen, Bucha) based on the modified layer design of the layer "Sunbelt Platinum" with an anti-reflective coating, the reference numeral 1010 the reflection and absorption of a system with an XIR film from the company Southwall and a

Anti-reflection coating and the reference numeral 1020 a system according to the prior art with an anti-reflective coating and an IR-reflective film Siplex Solar Control, and as a comparison an anti-reflective coating with

Reference numeral 1030 without IR-reflecting coating (CONTURAN from SCHOTT). In addition, the curve of one is still ideal in FIG. 3a

reflective IR mirror 1040, which reflects all wavelengths above 780 nm, the limit of visible light, and the idealized

Solar spectrum 1050 intensity distribution approximated as a Planckian radiator with a surface temperature of 5762K. Here, absorption bands were neglected for simplification in the spectrum. All equipment is a composite system with first and second disc-shaped elements and the corresponding coatings. The data given in Table 1 for the reflection R _V j _S and transmission T _vis in the visible wavelength range as well as the IR transmission T (IR) and the IR solar reflectivity relate to the overall systems, ie the

Laminated glass element consisting of two disk-shaped elements with the corresponding coatings. In this regard, reference is made to FIG. 1b.

Table 1 gives the data for the different layer systems shown in Figures 3a and 3b.

As can be seen in Table 1, the highest contrast occurs, namely 60, with the highest transmission T _V i _S , namely of 84%, at the highest IR solar reflection of 68% and low IR transmission T (IR) of only 9% for the device according to the invention comprising two disks with intervening silver-based IR. Reflection system in combination with a

Anti-reflection coating on the first and / or second slices of the composite system.

As shown in Table 1, the XIR film composite disk also has low transmission, but the IR solar reflectivity is only 40% and not 68% as in the case of the metal or silver-based IR reflection layer. In the XIR film, therefore, a high proportion of IR radiation of the natural sunlight or solar spectrum is absorbed or registered, as a result of which such a system inadmissibly heats up in relation to a system with a metal-based IR reflection layer. With the help of an approximate solar spectrum, that by a Planckian

Spotlights with T = 5762K can be well represented, one can deduce how much energy of sunlight in the IR range above 780 nm to 2500 nm is omitted: so is about 45% of solar energy in this area and about 55% are in the range 350nm - 780nm. Here, UV levels below 350nm were neglected, since the transmission here by the solid or liquid filler is already significantly reduced. Wavelengths above 2500nm were also not taken into account because glass above 2500nm itself strongly absorbed.

In FIG. 3b, in addition to the approximated solar spectrum 1050, an ideal IR mirror 1040 is also shown, which has no reflection below 780 nm in the visible range and exhibits 100% reflectivity above 780 nm. This

Ideal design of the mirror allows reflection of approximately 45% of the relevant solar radiation without affecting the visible area. The numerical values of IR reflection are given in this application relative to this ideal IR level.

If one folds the spectral reflectivities of the examples of Figure 3a with the relative intensity of the approximated solar spectrum, which is approximated as Planckian radiator with T = 5762 K, one can determine how much radiation of the sun is reflected in the IR range above 780nm , This value, based on the reflectivity of the idealized IR mirror with 100% reflection above 780 nm, is defined in this application as IR solar reflectivity.

From Table 1 it can be seen that 30% of the total solar spectrum energy can be reflected by the silver-based IR reflecting layer described here, which corresponds to an IR solar reflectivity of 68% over the ideal mirror with the curve 1040, while with an XIR film only 18% are possible, which corresponds to an IR solar reflectivity of 40% compared to the ideal mirror. One skilled in the art will appreciate that in practical embodiments, portions of the visible spectrum of curves 1000, 100, 1040, and 1050 may be used for IR reflection as the eye is becoming less sensitive at the edges of the visible region. To demonstrate its effectiveness, the simplification was introduced by means of ideal mirrors.

As a result of the system according to the invention of a composite pane with an IR-reflecting coating, as described above, it is possible for the first time to combine a high optical contrast in the visible wavelength range, in particular in an outdoor application in the display area, with a high IR reflectivity and thus the heat input due to near IR Another advantage is the ease of manufacture, since standard coating processes for silver-based low-E coatings can be used to produce the IR coating

Figures 4a-4d and 5a-5b show the cross section through an inventive device with polarizing filter according to a second aspect of the invention.

In Fig. 4a, 2001 denotes the first disc-shaped member. In FIG. 4 a, the polarization filter 2005 was connected directly to the first disk-shaped element by means of an adhesion layer 2003.

FIG. 4 b shows an expanded solution variant in which the polarizer 2005 was introduced by means of two filling materials 2007 and 2009 between two disk-shaped elements 2001 and 2002. The polarizing filter 2005, together with the two disk-shaped elements 2001 and 2002, forms a composite or a composite pane. In order to form the composite, in the space between the two disks 2001 and 2002 becomes a solid or liquid

Filler 2007 and 2009, in particular a polymer material or a solidified inorganic substance introduced. Unlike one

Insulating glass composite in which two discs are separated by a gap with a gaseous medium separated from each other, lie in the Inventive device, the disk-shaped elements 2001 and 2002 on the filler 2007 and 2009 and the polarizing filter 2005 directly to each other, resulting in a laminated glass element.

In order to achieve a high transmission T _vjs from the display device through the device 2010 to the viewer in the visible wavelength range and to achieve a low reflection R _V i _S of the light incident on the device 2010 from one or both sides, preferably R _vis <2 %, in particular <1%, as shown in FIGS. 4c and 4d, oxidic and / or conductive oxidic matching layers may be provided which minimize the reflectivity R _V is within the device or the laminated glass element 2010. FIGS. 5a and 5b illustrate the combination of the polarizing filters shown in FIG. 4 with additional IR-reflecting coatings, such as e.g. B. in Figures 1a to 1b is shown, which can be introduced into the structure. FIG. 5a shows, by way of example, the layer 2201, which may represent, for example, an XIR sun protection film and, in FIG. 5b, a layer 2202 which may be realized, for example, by a low-E layer. When applying a low-E layer in the system, the entire conditions apply, as in the previous

has been set out, for example, with reference to FIGS. 1a to 3. The formation of an IR-reflecting coating, in particular a low-E coating based on silver layers, is described in detail in Hans-Joachim Gläser, "Thin Film Technology on Flat Glass", pp. 167-171, the disclosure of which is fully incorporated into the present application While other metals such as gold or aluminum are also possible as IR-reflecting coatings, silver is preferred for its good color effect. When using the device according to the invention, especially in the outdoor area for display devices, it is advantageous if, to increase the contrast when direct sunlight is irradiated, the outside OUTSIDE, ie the side facing the air, 2011 of the device with a

Antireflective coating or an anti-reflective coating 2300,

2302 is provided. Of course, the inside of the interior, that is to say the side facing the display device 2012 of the device with an antireflection coating or an antireflection coating 2301, could also be used.

2303 be provided. For optimum effect, each of the interfaces between disc-shaped material 2001, 2002 or polarizer 2005 and

Ambient air or air / gas filling of the gap 2102 with a

Be provided with anti-reflection coating.

Anti-reflection coatings according to Examples 1 and 2 described above are used.

With the antireflective or antireflection coatings, as described in Examples 1 and 2, a contrast defined as T _V is R _V is can be achieved in the range from 10 to 60, preferably from 20 to 60, in particular from 40 to 50, under standard light. with non-anti-glare windows, the contrast values are less than 7. R _vis denotes the reflectance of a layer at standard light D65, T _vis the transmittance. ie the reflectance or

Transmittance in the visible wavelength range from 380 to 780 nm.

FIG. 6 shows a display device 2120 with an inventive device

Device as an attachment disc 2101 for a display, here a

Liquid crystal display 2130 shown. As shown in Figure 5b and here

used by way of example, the device according to the invention with a first disc-shaped element 2001 and a second disc-shaped element 2002 and an intermediate Pölfilter 2005 and a intermediate IR reflective layer 2202 and one on the

Outside of the first disk applied antireflective or

Anti-reflection coating 2302 and an applied to the outside of the second disc anti-reflection or anti-reflective coating 2303 provided. The liquid crystal display device 2130 located behind the device designed as an attachment plate 101 includes, without limitation, a liquid crystal 2133 inserted between two panes 2131, 2132 and light source 2136. For the light sources 2136, a rear polarizer 2134 is attached to the rear side of the pane 2131 and to the front side In the disk 2132, a front polarizer 2135 of the liquid crystal display 2130 is mounted. Alternatively, this front polarizer 2135 can also be dispensed with, its function in this embodiment then being replaced by the polarizer 2005 of FIG

Replacement disk 2101 is adopted. The entire liquid crystal display 2130 is integrated in a housing 2137. The liquid crystal display 2130 is only one possible display, other possible displays include controllable LED or even OLED. Although a liquid crystal display is given, the invention is not limited thereto.

The inventive device prevents as an additional disc 2101

largely that light of the sun 2150 the space 2102 between the

Attachment disc and the liquid crystal display 2130 heats up. Nevertheless, due to the inherent heat development of the liquid crystal display 2130, it is necessary to actively cool it with a cooling device 2160. However, the cooling device 2160 can be dimensioned substantially smaller than in the prior art, since a heat input due to the solar irradiation between the disc and the liquid crystal display does not take place.

FIG. 7 shows the transmission for devices with incorporated polarizer and different layer systems over a wavelength of 400 nm to 2000 nm. The curve 2500 shows the transmission for a device 2010 from a polarizer, which was laminated by means of polyurethane film between two disk-shaped, transparent elements of the thickness 4 mm, analogously to the structure in drawing 1b. The transmission in this curve is in the range 430 nm to above 750 nm above 60% transmission. Curve 2501 represents the same structure as curve 2500, with the sample rotated 90 °. The transmission is here in the range 430 nm to 750 nm below 10%, in large parts even below 1% transmission.

FIG. 8 shows the reflection for devices with incorporated polarizer and different layer systems over a wavelength of 400 nm to 2000 nm. By the introduced antireflection layers (2302, 2303)

According to a construction in drawing 4d on the outside of the laminate, the total reflection of the device 2010 against reflection using an uncoated float glass of about 8% in the visible range of light between 380 nm and 780 nm is significantly reduced.

Table 2: Reflections and transmissions of CONTURAN with polarizing filter according to FIG. 4d and for comparison CONTURAN without polarizing filter

Table 2 shows the data for the reflections and transmissions of

CONTURAN from Schott AG with polarizing filter according to FIG. 4d and CONTURAN without polarizer shown in comparison. It can be seen that in the case of the structure without a polarizing filter, the sunlight (unpolarized) passes through 96% of the glass and heats up the LC display behind (This observation applies to the proportion of solar radiation that is visible, ie from 380 nm to 780 nm ). At the same time, the light emitted by the LC display can also pass through the glass to the same percentage and reach the viewer. As soon as a polarizing filter is used, only 44% of the unpolarized, visible sunlight is transmitted, while the radiation of the LC display, which by definition is aligned along the parallel polarization direction, passes through the device 10 to 83.6%. The transmission of radiation from the LC display to the viewer is thus only slightly damped. The ratio T ™ (D65, unpolarized) to Τ " _β (D65, parallel) indicates that this solution is effective at exposing 53% of the visible solar radiation to the display. This heats up the display significantly less.

At the same time, due to the low reflection R _V j _{S of} the device 2010 of only 0.9% according to Table 1 it can be achieved that disturbing reflections of the sunlight are suppressed when viewing the image on the LCD screen. The structure achieved thereby even slightly improved values, compared to the

standard constructions of display devices with anti-glare glasses.

By the inventive device with a polarizer and

optionally an IR-reflecting film, it is possible for the first time to provide a high optical contrast, i. to achieve the ratio of the desired radiation from the display device against the disturbing reflection of sunlight, in the visible wavelength range, especially in an outdoor application, without significantly reducing the brightness of the display device and at the same time to reduce the heat input in particular via a solar radiation in the visible wavelength range. Another advantage is the ease of manufacture, since standard processes and films can be used to implement the described invention.

Claims

claims

1. device (1), in particular for a display device (1000),

full

a first disk-shaped element (3) and

a second disk-shaped element (7) and a coating introduced between the first disk-shaped element and the second disk-shaped element,

characterized in that

the coating comprises an IR-reflecting coating (9) applied to the first and / or second element and the at least first disc-shaped element (3), the at least second disc-shaped element (7) and the coating form a bond and that the space is filled between the discs with a filler material (8). ,

2. Device according to claim 1, characterized in that

the device is configured such that the IR solar reflectivity of the device (1) is in the range 45% to 95%, in particular in the range 50% to 80%.

3. Device according to one of claims 1 to 2, characterized in that

an edge (5) of the first disk-shaped element (3) and / or the second disk-shaped element (7) has no IR-reflecting

Coating (9), or the IR-reflective coating is interrupted at the edge.

4. Device according to claim 3, characterized in that

the edge (5) of the first disc-shaped element and / or an edge (5) of the second disc-shaped element has a sealing material. Device according to one of claims 1 to 4, characterized in that

the IR-reflecting coating (9) one of the following

Coatings is:

a low-E coating

a low-E coating consisting of a metallically highly conductive layer.

a low-E coating comprising one or more of the following metals:

silver

gold

Aluminum 6. Device according to one of claims 1 to 5,

characterized in that

the first and / or the second disc-shaped element a

Antireflective coating (20) or an antireflective coating, in particular in the visible wavelength range comprises, where preferred

the anti-reflection coating (20) is disposed on one or more of the following surfaces:

an outer side (13) of the first disk-shaped element (3); an outer side (11) of the second disc-shaped element (7).

7. Device according to one of claims 1 to 6,

characterized in that

the device comprises adaptation layers (23.1, 23.2) which are formed in such a way that the reflectivity R _{vis of} the device is <2%, in particular <1%.

8. Device according to claim 7, characterized in that

the matching layers (23.1, 23.2) are oxidic and / or conductive oxidic layers.

9. Device according to one of claims 7 to 8,

characterized in that

the matching layers (23.1, 23.2) are arranged between the first disk-shaped element (3) and the IR-reflecting coating (9) and the IR-reflecting coating (9) and the second disk-shaped element (7).

10. Device according to one of claims 6 to 8, characterized in that

the antireflection coating (20) comprises one of the following constructions or with subsequent application methods

is applied:

a) the anti-reflection coating is applied with the help of a

the antireflective coating is applied with the aid of the sol-gel

Applied technology;

The anti-reflective coating is called

Single interference coating made from sol-gel technology;

The antireflective coating is produced as a triple interference coating from the sol-gel technology, wherein the first layer has a refractive index between 1, 6 and 1, 8 the second layer has a refractive index between 1, 9 and 2.5 and the refractive index of the third layer is between 1, 4 and 1, 5,

The anti-reflective coating is using a

High vacuum technology produced, with the help of the

The anti-reflective coating is using a

High vacuum technology manufactured as multiple interference layer system;

The anti-reflective coating is using a

Sputtering process produced under high vacuum;

The anti-reflective coating is made from one

Vapor deposition process under high vacuum,

the anti-reflective coating is made from an online CVD process;

the anti-reflective coating is taken from an offline CVD

Process made,

The anti-reflective coating is using a

Etching process produced as a porous layer;

The anti-reflective coating is using a

Etching process produced as a light-scattering surface.

11. Device for a display device (2120) comprising a first disk-shaped element (2001) and a polarizing filter (2005)

characterized in that

the pole filter (2005) is connected to the disc-shaped element (2001) and its polarization direction is aligned parallel to the polarization direction of the light emitted by the underlying display device (2120), and that between the device and the

Display device (2120) a gap (2102) is provided.

12. Device for a display device according to one of claims 1 to 10,

characterized in that

the device comprises a polarizing filter and the polarizing filter is connected to the first disc-shaped element and its polarization direction is parallel to the direction of polarization of that of the latter

Display device emitted light is aligned and that a gap is provided between the device and the display device.

13. Device according to one of claims 11 to 12, characterized

marked that

the device is designed such that the transmission in the optical spectral range of 380 nm and 780 nm has a ratio between the parallel and orthogonal polarization direction, measured with polarized light of at least 3 to 1, preferably 5 to 1, particularly preferably above 10 to 1.

14. Device according to one of claims 11 to 13 characterized

characterized in that an at least second disc-shaped element (2011) is connected to the polarizer (2005). Device according to one of claims 11 to 14, characterized in that the front polarizer of the display device (2120) over the standard structure deleted and its effect is taken over by the polarizing filter of the device (10).

Device according to one of claims 11 to 15, characterized

in that, in addition to the polarizing filter (2005), the device also comprises an infrared reflecting layer (2201, 2202) which, in the infrared region, comprises the transmission T | _R for light between 780 nm and 2500 nm through the device to less than 60%, preferably less than 30%, more preferably less than 10%.

Device according to one of claims 11 to 16, characterized in that

the first and / or the second disc-shaped element a

Antireflection coating (2300, 2301, 2302, 2303), in particular in the visible wavelength range includes, wherein preferred

the anti-reflection coating (2300, 2301, 2302, 2303) is disposed on one or more of the following surfaces:

an outside (2011) of the first disk-shaped element (2001);

an outside (2012) of the second disc-shaped element (2011);

the outside (2013) of the pole filter (2005) if the polarizer forms the air end of the device.

Device according to claim 17, characterized in that

the device comprises antireflection coatings (2300, 2301, 2302, 2303), which are formed in such a way that the reflectivity R _V i _{S of} the

Device <3%, in particular <2%.

19. Device according to one of claims 17 or 18, characterized

marked that

the device contains low-E layers whose optical design is designed such that the reflectivity R _{VIS of} the device is <3%,

in particular <2%.

Device according to one of claims 17 to 19, characterized

marked that

the antireflection coating (2300, 2301, 2302, 2303) comprises one of the following constructions or is applied with the following application methods:

a) the anti-reflection coating is applied with the help of a

the antireflective coating is applied with the aid of the sol-gel

Applied technology;

The anti-reflective coating is called

Single interference coating made from sol-gel technology;

the anti-reflection coating is produced as a triple-interference coating from the sol-gel technology, wherein the first layer has a refractive index between 1, 6 and 1, 8, the second layer has a refractive index between 1, 9 and 2.5 and the Refractive index of the third layer is between 1, 4 and 1.5.

b) the anti-reflection coating is applied with the help of a

High vacuum technology produced, with the help of the High-vacuum technology applied layer is provided with one of the following techniques:

The anti-reflective coating is using a

High vacuum technology manufactured as multiple interference layer system;

The anti-reflective coating is using a

High vacuum technology produced as single layer system; the anti-reflection coating is produced from a sputtering process under high vacuum;

the anti-reflective coating is produced from a vapor deposition process under high vacuum. c) the antireflective coating is produced by means of a CVD process, wherein the layer applied by means of a CVD process is provided by one of the following techniques:

the anti-reflective coating is made from an online CVD process;

The anti-reflective coating is made from an offline CVD process.

d) the antireflective coating is produced by means of an etching process, wherein the layer applied by means of an etching process is provided by one of the following techniques:

the anti-reflection coating is produced by means of an etching process as a porous layer;

the anti-reflection coating is produced by means of an etching process as a light-scattering surface.

Device according to one of claims 11 or 12, characterized

marked that

the intermediate space (2102) is filled with a gaseous material, in particular air or nitrogen or helium or argon.

22. Use of a device according to one of claims 11 to 21 as an attachment plate (2101) for a display device (2120), preferably for a liquid crystal display device (2130), which emits highly polarized light.

23. Use of a device according to one of claims 11 to 21 as an attachment disc (2101) for a display device (2120) in

Exterior, with the edge area sealed.

24. Display device comprising a liquid crystal display device

(2130) and an attachment disc (2101) characterized in that the attachment disc (2101) is a device according to one of claims 11 to 21.

25. Use of a device according to one of claims 1 to 10 in one of the following areas:

- In the field of display devices, in particular

Outdoor display devices, preferred

Liquid crystal display devices;

- in the field of image glazing.

26. Display device comprising

a liquid crystal display device (1000),

an attachment disk 101),

characterized in that

the attachment disc is a device according to one of claims 1 to 10.