TW201226961A - Video screen cover glass illumination - Google Patents

Abstract

Video display screens for ''video off'' illumination comprise an imaging display panel, a cover glass sheet for the display panel, and a light source for injecting light into the cover glass sheet, wherein at least a portion of the cover glass sheet is provided with at least one light-scattering bulk or surface element effective to scatter a portion of the light at an angle normal to plane of the cover glass sheet, for front surface illumination, or to scatter a portion of the light into the plane of the sheet, for sheet border or edge illumination.

Description

201226961 VI. INSTRUCTIONS: RELATED APPLICATIONS This application claims priority under U.S. Provisional Patent Application No. 61/4〇7,698, filed on October 28, 2010, under the Patent Law. The content is incorporated herein by reference. [Technical Field] The present disclosure is in the field of information display, and mainly relates to an image display screen that can provide uniform illumination when the image display screen is not in use [Prior Art] Very thin sheet glass, The optical clarity, lightweight and high-quality Yuli strength of the sheet glass are now suitable for a wide range of advanced applications. One such application system, as a Cover Glass Sheet for an image display, is particularly an image display including a large-screen television system and an LCD television. Large screen TVs can occupy a large amount of wall space, which is neither noticeable nor useful when the TV is turned off. Recently, some TV manufacturers have begun to provide TVs that provide supplemental lighting or minimum room lighting during the period when the TV is inactive, in the state of "images off": in some cases, at the bottom of the '9 TV screens Sidelighted glow sticks or strips are provided on other edge portions.

S These methods can provide some lighting, but they are not aesthetically pleasing and do not conform to the so-called “integral” design concept that is favored by buyers in 201226961. A more attractive or effective "image close" for TV and other information displays will be of interest to manufacturers and consumers. Similar auxiliary display lighting will provide commercial advantages, for example, for information displays utilized in the home electrical industry. In both cases, a display screen illumination system that uses an inexpensive but efficient source of light, and an effective design that maximizes the light input and light output from the source for the user's aesthetics. SUMMARY OF THE INVENTION In accordance with the present disclosure, an image display screen is provided with an improved display illumination system for image off-state, giving a higher level of illumination at a lower cost and improved efficiency. The system is provided as a light scattering system that scatters light transmitted within the body of the protective glass sheet in an outward direction that provides wide angle illumination from the front surface of the glass and/or diffused edge illumination from the edge of the protective glass. . In a particular embodiment, an anti-glare coating is applied to at least the edge and/or bezel area of the protective glass sheet, the anti-glare coating can scatter the light transmitted within the sheet outwardly over a wide viewing angle range to view By. The current anti-glare systems for such displays, including coated or textured surfaces on the protective glass sheet, only produce limited light scattering from the light from the source used before t. In addition, significant scattering occurs only at high viewing angles, i.e., a very small amount of light is scattered at an angle perpendicular to the plane of the display screen. The case

An embodiment of the display of S 4 201226961 2 utilizes an anti-glare coating or surface, such a coating; the surface includes a scattering portion 'the size of the scattering portion is illuminated by the level of the wavelength of the emitted light' such that a wide range is provided Light wavelength. The display of this case is not shown by the further embodiment of the present invention combined with the improvement of the setting of the tenth 'for the light to the high efficiency of the human ^ = # # + + gate Shuangfeng incident to the protective glass To enhance the level of illumination provided by the display. In the second example, in the second example, the array of large-spot size light sources with high numerical aperture, phase 丨 &; 欲 夕 J, for example, the array of first-order diodes (LEDs), is set to shoot the light to the protection The back surface of the glass. Then, a light scattering layer or a reflective film is disposed adjacent to the arrays, and the light scattering layer or reflective film 3 is again placed on the opposite surface of the phase of the protective glass sheet to scatter and diffuse the incident light at a wide angle range. Thus, the 5 Hz scattered light can exit from the edge of the protective glass sheet or be guided in the on-chip to the scatter portion, which scatters light from the display toward the viewer. In the first aspect, therefore, the description of the Qian'an ancestor does not reveal the case for an image display screen, the image display screen includes the image Si dry and the „ / 诼 display panel, for the display panel is thin a glass sheet and a light source, which is used to inject light into the protective glass sheet. At least a portion of the protective glass sheet is provided with at least one light scattering element 'usually in the form of a surface layer or a coating Or in the form of a light scattering phase dispersed within the body of the sheet, the first scattering component is arranged to scatter at least one of the light sources incident on the sheet in an outward direction, the directions comprising The edge of the film and /哎_% long, 'the part of the surface of the film. On the other hand, 'this disclosure provides' - the image display screen of the goods, the image display screen includes the image display panel, with s ^ For the protection of s-display panel 5 201226961 Spherical glass and light source 'The light source is used to inject light into the protective glass sheet' where the image display panel has a viewing area and the protective glass sheet has a viewing portion The viewing partial The viewing area. In a particular embodiment of the display, at least the viewing portion of the protective glass sheet is provided with the light scattering element, such as an anti-glare layer, for example, coated or roughened. Surface area. The present disclosure encompasses embodiments wherein the thickened surface region has a thick chain to effectively scatter light over an angular range that includes an angle normal to the outer surface of the protective glass sheet. In another aspect, the disclosure provides an image display screen, the image display screen includes an image display panel, a protective glass sheet for the display panel, and a light source for injecting light into the protective glass sheet, wherein At least a portion of the protective glass sheet is adjacent to the light source and is provided with opposing light scattering bodies or light scattering surface elements on opposite surfaces of the protective glass sheet. In particular embodiments of the display, the opposing The light scattering surface element comprises a light scattering ink layer disposed on at least one of the borders of the protective glass sheet adjacent to the light source In a further aspect, the present disclosure provides an image display screen, the image display screen including an image display panel, a cover glass for the display panel, and a light source for injecting light into the Protecting the glass sheet, and at least one light scattering surface element on at least a portion of the protective glass sheet, wherein the light scattering element is a multilayer surface element, the multilayer surface element system 5 being again disposed to scatter light from the light source into The protective glass 201226961 is a glass sheet. In a particular embodiment, the light source is an array of high numerical aperture LED elements, and the multilayer surface element includes a plurality of layers of ink disposed on the support film to scatter light from the elements to The protective glass sheet also discloses that the protective glass sheet includes optical cavities that can efficiently direct the guided light into the plane of the sheet for controlling the illumination or main plane from the edge of the sheet. The light. [Embodiment] The current method of display illumination in the image off state includes: the edge position of the light guide or the diode light source attached to the display panel or the cover glass is only & for edge illumination. An opaque bezel is typically provided to block the light source under illumination. The illumination is limited by light from the source that is scattered at a high viewing angle and only illuminates from the edge or border area of the display. The image display provided in accordance with the present disclosure includes a protective glass sheet that provides enhanced light scattering characteristics, substantially increasing the level of illumination without the need to increase the power source. A light scattering layer or coating, such as a modified anti-glare or anti-reflective coating, is selectively applied to protect at least the edge or bezel portion of the glass sheet to increase scattering of light from the source within the protective glass sheet. In a particular embodiment, a light scattering coating comprising a single or multiple layers of light scattering particles is applied to the surface portion of the protective glass sheet. This application can be accomplished by dip-coating or spraying a liquid phase dispersion of light scattering particles onto the surface of the sheet. If necessary, the coated tablets can be

S 7 201226961 is heat treated to join the particles to the surface of the sheet, such as by melting or sinking the particle layer into the glass surface. Thereafter, the sheet may be further processed as needed, including subjecting the sheet to thermal or chemical tempering to improve the strength of the sheet for use in making a complete image display without damaging the light scattering coating. The protective glass sheets provided with light scattering coating as described above bring a number of important advantages to image-off illumination. The use of scattering particles having a particle size in the range of visible wavelengths or near the wavelength of visible light (e.g., in the range of 4 Å to 10 (10)) provides angle-independent light scattering. Therefore, scattering is no longer limited to high viewing angles, but can occur at a wide range of angles, including scattering directions that are perpendicular to and approximately perpendicular to the plane of the image display, greatly increasing the amount of light available for actual illumination. Furthermore, for particle sizes of at least 100 nm, light scattering can be substantially independent of wavelength. Therefore, the spectral characteristics of the scattered light can be better controlled, and the broadband or narrowband scattering depends on the spectral characteristics of the source and the scattering of the selected particles. Finally, the glare or light scattering characteristics of the sheet can be varied between different regions of the sheet to allow for patterning of the illumination source. Fig. 1 is an electron micrograph of a portion of a glass sheet, which is provided with a coating of light-scattering particles on the surface of the sheet. Within the wider region 12, the coated region comprises a multi-layered particle layer of 3 GGnm in a single layer which is covered by an early 'particle layer. Slice: Figure 2 shows the protective glass 2 for the image display. The picture of the border of the middle piece, 22, such as v. By soaking the frame of the piece. : Covered by coating.酒精 eight 300 nm particles of alcohol suspension, following

The coating is applied by heat treatment of S 8 201226961 to submerge the particles into the surface of the sheet to a depth of about 1〇〇11〇1. The coated side frame is illuminated by an array of LEDs. As is apparent from the photograph, there is a large degree of light scattering in a direction perpendicular to the plane of the sheet. The light-scattering sheets of Figures 1 and 2 are the disclosed embodiment of the image display wherein the light-scattering surface element is an anti-glare coating, wherein the anti-glare coating comprises a layer of light-scattering particles, and wherein The iso-light scattering particle knife is exemplified by a single layer deposited by a liquid phase dispersion of particles. An embodiment of the latter is also exemplified in which a layer of light scattering particles is bonded to the surface of the protective glass, for example, by the step of heating the glass to melt the layer of particles to the glass. The present disclosure also encompasses a display incorporating a coated protective glass sheet wherein the light scattering particles have an average particle size in the range of 1 〇〇 to 1 〇〇〇 nm. As indicated above, such a particle size causes light to be scattered over a wide range of wavelengths and a wide range of scattering angles. The range of scattering angles includes angles perpendicular to the surface or plane of the image prior to the screen of the image display. The image-off illumination of such a display can be achieved by any compact source comprising a light guide or fiber optic component in which the source is an array of LEDs. A commercial image display that provides anti-glare properties utilizes a protective glass sheet that provides a satisfactory glare suppression in addition to the slightly roughened sheet (facing the viewer). However, conventional types of anti-glare surfaces provide very limited light scattering, even though the optical waveguide efficiency of the opposing major surfaces of the wafer captures most of the light incident on the edge of the wafer in the plane of the wafer. Therefore the scattering provided by such a surface is usually only visible

9 S 201226961 at a high angle from the boresight perpendicular to the plane of the sheet. Figures 3a and 3b of the figure show the scattered light intensity of the protective glass plate of the a-side illumination = from the (4) array side of the illuminated protective glass piece. In these figures ^^ ώ . There is a known anti-glare surface layer. In Figure 3a, the image is viewed from the plane H ^ ^ ^ of the plane at an angle. ^B, in Figure 3b, the normal is approximated to the plane of the sheet. The angle f is the piece. The limited high angle nature of light scattering from these conventional anti-glare surfaces is evident from these photographs. The first shot is a large number, and the first axis of the A. The illumination provided by the known protective glass, combined with the embodiment of the image display according to this document for protecting the glass sheet, provides a highly efficient light guiding extraction and thus excellent full-width illumination. The figure of the figure is a photograph taken of an edge-like protective glass sheet along an axis perpendicular to the plane of the sheet surface. A large amount of light scattered from the sheet along the axis is fairly visible from the photograph. The advantage is that the high scattering efficiency achieved in the protective glass sheet of Figure 3c does not significantly compromise the quality of the video image presented by the image display panel placed behind the protective glass when the side of the protective sheet is illuminated. The obvious difference in scattering behavior between the 3rd and 3c graphs in the figure, and thus the significant difference in illumination efficiency, is due to the change in the nature of the surface roughness of the anti-glare surface present on the two protective sheets. The conventional anti-glare protective glass sheet characterized in Fig. 3a and Fig. 3b combines the roughened antiglare surface layer with a surface roughness of 4 〇 micron scale. In contrast, Fig. 3c The anti-glare surface layer modified by 201226961 shown in the protective glass sheet has a roughness of a relevant length of about 500 nm. The shorter roughness-related length, that is, about 〇〇 〇〇 丨〇〇〇 The relevant length in the wavelength range of the claws, the short roughness-related length has several beneficial effects. In addition to providing angle-independent light scattering, the scattering efficiency of the surface is improved, and thus the potential for image-off illumination is increased. In addition, the fact that the potential brightness is improved is that the modified anti-glare layer can be easily extended to cover the entire surface area of the image display. Figure 4 shows the high-efficiency protective glass. The image display screen of the advantage of scattering. The picture 4 shows the image display. The front view (a) and the side view (b) of the image display screen include an image display panel for the protective glass sheet 34 of the display panel. And a light source '36 for injecting light into the protective glass sheet. The protective glass sheet 34 incorporates a modified anti-glare surface layer (not shown) on the front side or the viewing side of the sheet (relative to the display panel, Face-to-face surface. For efficient low angle and normal axis scattering' The modified anti-glare layer has a surface roughness-dependent length in the visible wavelength range. The anti-glare layer on the 34 covers the image display The entire surface of the protective sheet is surrounded by an opaque area. The bezel 39 is used to shield the light source 36 from the protective glass sheet viewing area 38. The light black border 39 is a view of the light source. The LED array is composed of a light source that combines the LED array and the shadow frame after the month to give an "overall" appearance to the assembled image display screen. In the embodiment illustrated in Figure 4, an adhesive layer 33 is provided to bond the protective 201226961 glass sheet 34 to the image display panel 32. The layer may be composed of an adhesive having a refractive index lower than that of the display panel 32 to avoid loss of light transmitted to the protective sheet to the adhesive layer or the display panel. Also shown is an optional anti-reflective layer 38 that is spaced from the outer surface of the protective glass sheet 34 to improve the image quality of the display. In another configuration, the adhesive layer can be replaced by an air gap, such as an air gap of at least 2 inches wide, which also minimizes the loss of incoming LED light transmitted within the protective sheet. For example, the embodiment of the image display as illustrated by the above examples, wherein the image display panel has a viewing area, the protective glass sheet has a viewing portion covering the viewing area, and the viewing portion of the protective glass sheet is provided in the form of a surface layer. Light scattering element. The present disclosure particularly encompasses the embodiment 'where the light scattering element comprises (4) a roughened surface area on the glass cover sheet, and wherein the roughened surface area has a coarse slit to effectively scatter light over an angular range, the angle The range includes an angle perpendicular to the protective glass sheet. For this purpose, the coarsely saccharified surface region has a surface roughness dependent length of less than 1 〇〇〇 nm. The fish disclosure also includes a display material layer in which a display material layer is provided between the image display panel and the protective glass sheet, and wherein the bonding material has a refractive index lower than that of the protective glass sheet. In the door gap #, providing air between the protective glass sheet and the image display panel. According to the foregoing description and examples, various light sources and various light-carrying lights can be used.

S 12 201226961 Source method to inject the image off illumination light into the protective glass for the image display screen. It is advantageous to use off-the-shelf LEDs or other inexpensive light sources with large numerical apertures and/or large spot sizes for reasons of cost and energy efficiency. The method of loading the light source on the back surface of the bezel area of the protective glass sheet, rather than loading the light source on the edge of the sheet, supports the currently favored "whole" display design option. The use of a load source behind the image-off illumination, whether high numerical aperture or otherwise, requires improved light input efficiency. According to this paper, an improved scattering method is used to provide the necessary improvement in efficiency. Such a method, as more fully disclosed below, can provide nearly 1% of light input efficiency, via optional absorption and/or wavelength conversion, can result in control of the wavelength or color of the output or illumination light, and can substantially avoid the source Align the puzzle. The design used for the clarification of the image display screen includes a protective glass sheet for use in conjunction with the image display panel to provide a display for providing a strong image-off illumination as illustrated in Figure 5. Fig. 5 includes a front view (a), a side view (b) and a rear view (c) of the display 40. The display includes a bezel protective cover glass 4, which is attached to the image display panel 42. When the light source consisting of the LED array 43 is activated, the protective glass sheet of Fig. 5 is adapted to emit illumination light from the bottom edge 4& The anti-reflection film 44 is disposed across the front surface of the protective glass sheet 41, and the anti-reflection film is in contact with the printed opaque black ink border frame 45, and the outline of the image viewing area 46 is captured by the glass through the mate 13 201226961. The width of the bottom section of the black ink frame 45 is such that the mask is attached to the LED array 43 which is attached to the back of the protected glass sheet. When viewing the image by the front view (4), it is not visible to the direct view of the LED array. The glazing is: : A certain degree of light input efficiency is sufficient to ensure sufficient illumination light output from the protected bottom edge 41a, causing radiation from: =3 dimming between two opposing white or "wideband" diffuse reflective surface layers A plurality of 'white or 'wideband' diffuse reflection tables f are placed adjacent to the Μ position for the LED array 43, which is on the back surface of the lower side of the glazing sheet 41. The opposing diffuser reflective surface layers form an optical cavity in the substrate of the sheet 41. For example, the face is shown in the upper bottom of the glass sheet 41 as shown in the upper jaw. The reflective surface area of the white opaque ink frame strip on the knife. Or, by: from: roughening the surface portion to achieve the desired scattering, or by scattering:: the volume of the particle scattering phase in the same bottom portion of #41 came to her μ(4), 咐绮^ The light scattered from the angle of the white border strip 48a 会 will wait for the door ^w, position ' until the light is no longer limited to the time between the stalks. The statistical distribution of the wire-type, the mode can be transmitted to escape the angle of the light. The balance between the scattering of the surface of the die and the volume and the limit of the range from the ink frame strip will depend on the light leaving the strip. The difference between the light reflections. In the image display curtain of Figure 5, the plane guide of the protective glass piece is protected.

The light from S 14 201226961 will be emitted from the bottom edge 4 i of the sheet <not η ! a. If you want to emit only a part of the guided light or unguided light that escapes the reflection of the reflector, then reflect the ink strip or J: He is like a _, and he is a sinister shot. The pieces can be tapered toward the emitting area, which is known to be effective in limiting the amount of escaped light or causing light to be emitted in preference to a selected angle. For example, by using colored ink instead of the white reflective inks 48a and 48b in the drawing, control of the color of the illumination can be performed. The selected wavelengths of light that have been reflected from such inks are selectively absorbed to change the color of the remaining light. Other color control methods m The use of linear optical materials, such as the addition of crystals & 夭 仏 1 and 千 j j additives to glass or reflective strips applied to the glass. Since the different sizes of quantum dots can affect the scattering of light at different wavelengths, the quantum dot method causes the emission of light to be patterned. A particular embodiment of the disclosed image display screen incorporates the above-described exemplary elements including: at least a portion of the protective glass sheet is provided adjacent to a source for displaying a screen, the protective glass sheet having a relative light scattering body or attachment Surface elements on opposite surfaces of the sheet. The present disclosure includes an embodiment wherein the opposing surface elements comprise a layer of light-scattering ink disposed on at least a portion of a bezel of the protective glass sheet, wherein the opposing layers of light-scattering ink comprise a suspended particle phase Providing volumetric light scattering, or including a roughened surface, provides surface light scattering, and wherein the light scattering ink layers provide broadband (white) reflection. A light source for such a display would advantageously comprise an array of LED elements arranged to direct light onto the back surface of the protective glass sheet. The image for color control turns off the illumination, and the opposite light-scattering ink 15 201226961 layer will exhibit wavelength-selected light absorption or reflection, or the protective glass will combine the nonlinear optical scattering center into the surface of the glass or the ink layers Inside. The nonlinear optical scattering center is advantageously selected from the group consisting of light scattering crystals and quantum dots, including embodiments, the embodiments including a display in which a nonlinear optical scattering center is arranged in a pattern. The image display screen example illustrated in Figure 5 provides a bottom edge image off illumination that is commercially compelling, and when an array comprising high numerical aperture LED elements is available, the bottom Edge image turning off illumination can be particularly efficient. However, it is thus shown that the manufacture of the screen design is expensive, since the light scattering system for efficiently injecting light into the protective glass sheet comprises a plurality of surface elements which must be suitably arranged to affect the opposite surfaces of the sheet. Repeated reflection of the input light between. Multiple and separate ink applications have been employed to arrange the necessary layers. Further, in accordance with an embodiment of the display screen disclosed in the present disclosure, the multi-layered surface elements are present in a form provided with a plurality of layers of ink disposed on the support film. The support film suitably comprises an anti-reflective film layer, such as film layer 44 in Figure 5 of the drawings. Prior to the bonding of the support film to the protective glass sheet, the support film provides a plurality of layers of ink by screen printing, for example, to control light scattering and light source masking in the image display screen. In a particular example, the back surface of the film is provided with a black or other light absorbing ink layer, such as the edged black ink layer 45 of Figure 5 of the drawings. The layer is configured to block light from the LED array from direct viewing from an angle perpendicular to the display, and the layer is configured to serve as a surround border for the viewing zone 16 201226961 of the display. Thereafter, a white opaque ink layer can be applied to the black ink layer on the support film, the white opaque ink layer exhibiting diffused scattering of white light in the form of the ink layer 48a of Fig. 5. The subsequently coated support film is then attached to the front surface of the protective glass sheet for the image display screen, which adheres the ink layer to both light absorption and light scattering to ensure efficient scattering of light from the LED array. Enter the plane of the protective glass piece. Figure 6 includes a photograph of a side view of supporting the anti-reflective film 54 and providing an absorbing black ink layer 5 5 and covering the white reflected light scattering strip 58 8 in accordance with this particular embodiment. This view shows the portion containing the uncoated side of the film. Although the use of a direct application ink layer or printed film provides an efficient and economical way to inject efficient light into a protective glass sheet comprising an optical cavity, an all-glass approach is used to create an optical cavity of similar efficiency. The all-glass approach will give advantages in terms of mechanical and thermal durability. Thus, according to a further embodiment of the disclosed image display screen, a glass frit diffusion scattering layer is applied and bonded to the opposite surface of the protective glass sheet. In a particular embodiment of a protective glass sheet for such a screen, the glass layer is applied to the opposite sheet surface instead of, for example, the opposite light scattering ink layer or ink for scattering light guidance as shown in Figure 5 of the drawings. membrane. For the glass embodiment, the opposing bonded white glass layers are disposed at locations 48a and 48b on the protective glass sheet (e.g., sheet 41 of Figure 5). Like the ink layers, the white glass layers provide diffuse broadband scattering to form an optical cavity in which light from a light source, such as an array of LEDs, can be incident on the optical cavity and multiple reflections. The light that is angled between the opposing major surfaces of the protective glass sheet is thus generated and is transmitted to the edge of the sheet in the plane of the sheet, for example, the edge of the sheet that can be illuminated. In some embodiments, as shown in Figure 5, the black ink layer 45 is disposed, and an opaque black or other light absorbing ink layer or glass layer is superimposed on the glass layer to hide the LED array from direct view. And & for the border for the image display incorporating the glass. Examples of glass compositions suitable for use with commercial protective glass sheets are as described in Table 1 below for the C〇rning Code 23 18 alkali aluminosilicate glass flakes. The glass composition is reported as the percentage of moles based on the oxide calculated from the glass source. Table 1 also reports the glass transition temperature (&), glass softening temperature (Ts), average coefficient of thermal expansion, and the hot melt temperature used to bond the glass-to-glass layer to the glass protective sheet. Tf). Table 1 - Glass composition oxide (mol%) m〇r: 1 2 3 4 5 6 62.1 48.4 48.4 43.38 43.4 ΓΓ43Τ 12.1 33.3 33.3 38.29 35.3 38 3 8.2 0.0 12.0 9.0 9.0 8.0 1.1 10.3 1.3 4.33 4.3 23 -_Zn〇0.0 5.0 5.0 5.0 5.0 5.0 — 2.7 3.0 0.0 0.0 3.0 3.0 -^2〇3 5.8 0.0 0.0 0.0 0.0 0.0 4.6 0.0 0.0 0.0 0.0 0.0 _ 0.7 0.0 0.0 0.0 0.0 0.0 2.8 0.0 SSS^SS^=sks: 0.0 0.0 0.0 0.0 Physical Properties 73.8 75.5 — -^__ 538° 4860 500° 4860 6840 602°

S 18 201226961

[~~1 700. ~Γ^~ Factory-1~~~----I The composition reported in Table 1 is only an illustrative example of a wide range of glass compositions that can be used to control the light emission from self-protecting glass. In addition, many of the components of the ^^ composition can be modified to change their optics. For example, conventional opaque additives such as oxidized, emulsified, and/or emulsified tin may be incorporated into the glass or glass preparation to increase the whiteness of the glass layer. Alternatively, or in addition, the light absorbing agent or phosphor powder may be σ to the glass or glass to change the color of the light source as it passes through the optical cavity formed by the glass. Figure 7 of the drawings contains a photograph of a protective glass sheet incorporating an optical cavity formed by applying a glass layer as described above. From the surface of the sheet in the image display screen incorporating the protective glass sheet (the surface of the sheet will face the viewer) To view as shown in Fig. 7, a white light scattering bonding front glass layer 68a is provided along the bottom boundary portion of the protective glass sheet 6,, which is bonded behind the white light scattering layer with respect to the white light scattering layer. A glass layer (not shown) is provided to form an optical cavity along the bottom border of the protective sheet. A light source composed of an array of illuminated LEDs is also attached to the back surface of the sheet (not shown), and is applied to the light-scattering glass layer 68a via the opaque black strip 65 to hide the LED array from the front of the self-protecting glass sheet. Look directly at the ΕΙ array). The majority of the light guided through the optical cavity formed by the bonded glass layers is ejected from the bottom edge 6丨 of the protective glass sheet 6丨. Moreover, however, some of the guiding light may be emitted from the sides and top edges of the sheet 61, such as position 61b as shown. The protective glass piece of Fig. 7 is an embodiment of the protective glass piece 19 201226961 of the present disclosure, comprising /α an optical cavity of at least one frame portion of the piece, including the frame portion of the embodiment The portions are provided with opposing light scattering surface elements that are located on opposite sheet surfaces of the bezel portion. For example, the light scattering surface elements in such embodiments can include a diffuse scattering ink layer disposed on the sheet surface or a diffusion scattering glass layer bonded to the sheet surface. In addition, as indicated in FIG. 7, the user of the image display screen combined with the protective glass sheet can be disposed on the light when the user of the screen needs to cover the light source from being directly viewed by the user. At least one of the scattering surface elements is on the light scattering surface element. Although the image display screens and constituent elements provided in accordance with the present disclosure have been described above with reference to specific examples of materials, configurations, designs, and procedures, it should be understood that the examples are for illustrative purposes only and that examples may be utilized Various modifications are made to meet the needs of similar or related applications within the scope of the appended claims. [Simple description of the picture] The description of the image revealed in this case, in which: ·············································································· 2 is a photo of the protective glass sheet a < - part of the protective glass sheet including the frame region to support light scattering. FIG. 3a is a coating showing the self-protecting vine particles. High Angle View of Light Scattered by Slope Fillers 20 201226961, the protective glass sheet incorporates another 'known anti-glare surface layer. Figure 3b is a low-angle view of the light scattered from the sheet from Figure 3a. Figure 3c is a low angle view of light scattered from a modified cover glass provided in accordance with the present disclosure. Figures 4a and 4b show the first lighting image showing the scene of the camp. The 5th, 5th, and 5c diagrams show the second illumination image showing the curtain. Fig. 6 is a photograph of an anti-reflection film which is used for image display and which has no printing film, and the anti-reflection film has a printing ink layer. Figure 7 is a photograph of a viewing angle of a protective glass sheet incorporating an optical cavity that produces light for side illumination to provide illumination of the image frame. [Main component symbol description] 10 Coated area 12 Wide area 20 Protective glass sheet 22 Frame area of protective glass sheet 30 Image display screen 32 Image display panel 33 Adhesive layer 34 Protective glass sheet 36 Light source 38 Viewing area/anti- Reflective layer 39 border 40 display 41 protective glass sheet 41a sheet bottom edge 42 image display panel 43 LED array 44 anti-reflection film 45 printing opaque black ink border frame 21 201226961 46 image viewing area 48a white opaque ink frame strip 48b White opaque ink frame strip 54 supporting anti-reflection film 55 absorbing black ink layer 5 8a covering white reflected light scattering strip 61 protecting glass sheet 61a bottom edge 61b position 65 opaque", strip 68a white light scattering bonding front glass layer twenty two

Claims (1)

201226961 VII. Patent application scope: 1 _ An image display screen, the image display screen includes an image display panel, a protective glass sheet for the display panel, and a light source for injecting light into the protection a glass sheet, wherein at least a portion of the protective glass sheet is provided with at least one light-scattering body or light-scattering surface element effective to scatter a portion of the light at an angle perpendicular to a plane of the protective glass sheet 2. The image display screen of claim 1, wherein the light scattering surface element is an anti-glare coating. 3. The image display screen of claim i, wherein the anti-glare coating comprises A layer of light-scattering particles. 4. The image display of claim 1 wherein the light-scattering particles are distributed in a single-trace, and the light-scattering particles are deposited from a liquid phase dispersion of a particle. 5. The image display screen according to the invention, wherein the light scattering particles are layered to the surface of the protective glass sheet. Curtain, where the protection system is tempered by heat or chemical. 喁片 23 S 201226961 7. Image guide rod or fiber optic component as described in the request item. ' , , the source is a light 8. As requested by i The image-array of the image. (4 no screen 'where the light source is LED item 1 is ~ it is like the display screen, the complex son star right', the middle 3 Hai special light scattering particle 卞 eight in the range of 100~1000 nm The average particle size in the solid. 10. The image as described in claim i... The page is not in the screen, and the light scattering particles are in an angular range, and the angle of the sea angle is perpendicular to the image. ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The first layer is configured to mask the light source from direct viewing of the light source from an angle perpendicular to the surface of the image display screen. ^ 12. - Image display screen 'The image display screen includes - image display panel, one for a protective glass sheet of the display panel and a light source, The light source is for injecting light into the protective glass sheet, and at least a portion of the protective glass sheet is provided with at least one light scattering body or light scattering surface element, wherein the image display panel has a viewing area, the protective glass S: 24 201226961 The sheet has a viewing portion 'the viewing portion covers the viewing area, and wherein at least the viewing portion of the protective glass sheet is provided with the light scattering element 0 13 . The image display screen as claimed in claim 12, Wherein the light scattering element comprises a roughened surface region on the protective glass sheet, the roughened surface region having a roughness to effectively scatter light over an angular range comprising an angle perpendicular to the protective glass sheet angle. 14. The image display screen of claim 13, wherein the roughened surface area has a surface roughness dependent length of less than 1000 ηη. 15. The image display screen of claim 12, wherein a bonding material layer is provided between the image display panel and the protective glass sheet, and wherein the bonding material layer has a refractive index lower than that of the protective glass sheet. The image display screen of claim 12, wherein an air gap is provided between the protective glass sheet and the image display panel. 17. An image display screen, the image display screen comprising an image display panel, a protective glass sheet for the display panel, and a light source for injecting light into the protective glass sheet, wherein at least - A portion of the protective glass sheet provides an opposite light scattering body or light scattering surface element on the opposite surface of the protective glass sheet. 18. The image display screen of claim 17, wherein the opposing surface elements comprise a layer of light-scattering ink disposed on at least a portion of a bezel of the protective glass sheet. 19. The image display screen of claim 18, wherein the light scattering ink layers provide broadband reflection. 20. The image display screen of claim 17, wherein the light source comprises an array of LED elements, the array of LED elements being arranged to direct light to a surface behind the protective glass. 21. The image display screen of claim 17, wherein a portion of the protective glass sheet comprises an opaque layer, the opaque layer being configured to mask the beta source from being perpendicular to The image shows the angle of the surface of the screen looking directly at the source. The image display screen of claim 18 wherein the opposing light scattering ink layers comprise a suspended particle phase providing volumetric light scattering. The image display screen of claim 18 wherein the opposing light scattering ink layers comprise roughened surfaces provide surface light scattering. S 26 201226961 24. The image display screen of claim 18, wherein the opposing light scattering ink layers exhibit wavelength-selected light absorption or reflection. 25. The image display screen of claim 17, wherein the protective glass sheet incorporates a nonlinear optical scattering center within the surface of the glass disposed within the light scattering ink layer on the glass. 26. The image display screen of claim 25, wherein the non-linear optical scattering centers are selected from the group consisting of light scattering crystals and quantum dots. 27. The image display screen of claim 25, wherein the non-linear optical scattering centers are arranged in a pattern. 28. An image display screen, the image display screen comprising an image display panel, a protective glass sheet for the display panel, and a light source for injecting light into the protective glass sheet, at least one The protective glass sheet is provided with at least one light scattering body or light scattering surface member, wherein the light scattering element is a multilayer surface element arranged to scatter light from the light source into the protection slope The glass sheet 0 wherein the light source is _ 29. The image display screen of claim 28, the array of high numerical aperture LED elements. The image display screen of claim 28, wherein the multi-layered surface element comprises a plurality of layers of ink disposed on a support film. 3. The image display screen of claim 28, wherein the support film is an anti-reflection film. 32. The image display screen of claim 28, wherein the support film is attached to the protective glass sheet in conjunction with the plurality of layers of ink. 33. The image display screen of claim 28, wherein the plurality of layers of ink comprise a layer of white ink exhibiting diffused light scattering. 34. The image display screen of claim 28, wherein the plurality of layers of ink comprise a layer of light absorbing ink. 3. The image display screen of claim 28, wherein the plurality of layers of ink are disposed to scatter a portion of the light from an edge of the protective slab. 36. A protective glass sheet for use in an image display screen, the protective glass sheet including an optical cavity along at least one of the side frame portions of the sheet. The protective glass sheet of claim 36, wherein the frame J of the sheet is provided with opposing light scattering surface elements on opposite sheet surfaces of the frame portion. 38. The protective glass sheet of claim 37, wherein the light scattering surface elements provide diffused broadband light scattering for the white light scattering layer'. The protective glass sheet of claim 37, wherein the light scattering surface elements comprise a diffusion scattering ink layer disposed on the surface of the sheet. The protective glass sheet of claim 37, wherein the light scattering surface elements comprise a layer of diffusion scattering glass that is bonded to a surface of the sheet. 41. The protective glass sheet of claim 37, wherein an opaque mask layer is disposed on at least one of the light scattering surface elements. S 29