KR200421906Y1 - Non-reflective glass screen - Google Patents

Abstract

The present invention relates to an anti-reflective glass screen for receiving an image of a TV reception and multimedia into a projector and transmitting an image from the projector to display an image on a wide vision PDP-type TV (large screen). According to an aspect of the present invention An anti-reflective glass screen made of a glass plate made of glass, comprising: a semi-transmissive layer formed on one side of the plate glass substrate to semi-transmit light emitted from the projector, and light formed on the other side of the plate glass substrate and transmitted through the plate glass substrate. An antireflective glass screen is provided which comprises a reflecting rock reflecting layer.

Glass screen, transflective layer, rock reflection layer, silver particle layer, black glass, aluminum particle

Description

Non-reflective glass screen

1 is a perspective view showing an antireflective glass screen according to an embodiment of the present invention,

2 is a cross-sectional view taken along line AA ′ of FIG. 1;

3 is a use state diagram showing a state of use of the anti-reflective glass screen according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: antireflective glass screen 10: semi-transmissive layer

11 fine particle coating layer 12 metal fine particle layer

13: fulta layer 20: plate glass substrate

30: silver particle layer 40: rock reflection layer

100: projector

The present invention relates to an anti-reflective glass screen for displaying images on a wide-vision PDP-type TV (large screen) by receiving an image of a TV reception and a multimedia input to a projector, and transmitting the image from the projector. On one side of the plate glass substrate is formed a transflective layer semi-transmitting the light emitted from the projector, and on the other side is formed a rock reflection layer reflecting the light transmitted through the plate glass substrate to distort or deform the image emitted from the projector To an anti-reflective glass screen that allows high quality screening without

The basic conditions of image are brightness, contrast ratio, and realization of natural color.

Contrast ratio refers to the phase display of the lightest and darkest parts of the screen. Normally, the black and white contrast of the image emitted by the projector is displayed. The technical display has a specification mark of 100: 1 to 5000: 1. The brightness display is in ANSI lumens, and since most modern projectors use 200-watt lamps, the basic brightness is high. Typically, every projector on the market has a brightness of around 1000 ANSI lumens, which can be seen in daylight with a few shade curtains. For business purposes, it has effective brightness of more than 1500 ~ 5000 ANSI lumens. The higher the value, the clearer the picture, even under bright fluorescent lights.

However, due to current technical problems, the high brightness of the projector does not mean that the contrast ratio is high at the same time. Still, due to various technical problems, if you want to increase the contrast very high, you have to lower the brightness. On the contrary, if you increase the brightness, the contrast drops.

No matter how high the contrast ratio of the projector is, if the screen cannot accommodate it, it is of no use, and if the contrast ratio of the screen image is low, the outline of the image will not be clear, the daytime scene will appear in the evening scene, and the outline of the object will not be clear. I can't. The black-and-white gradation is black fidelity. Like a projector, the projected image by the light source is red, blue, and green, and when all three primary colors are combined, it becomes white, and when all three primary colors are missing, it becomes black. Therefore, black appears as a spot color in addition to the three primary colors. If such black and white gradations are not clear, black appears as gray, and the head, eyes, etc. of a person are not clear.

Increasing the contrast ratio to increase the sharpness of the image means that the brightness difference between black and white is widened, and the white is brighter and the black is darker on the screen. In general, black tends to survive more when it is reflected off the blackboard.

In general, the display device for showing an image, a CRT display device, a TFT LCD display device, an LED display device, a PDP display device, a projection display device and the like are known, using a multi-cube method and a plastic screen (eg, poly carbon) Projector systems and the like are known.

Among them, an LCD display device and a projector method using a multi-cube method and a polycarbon screen are known as a device capable of constructing an ultra-large screen of at least 100 inches. By the way, the LED display device is widely used as an outdoor display board because of its high brightness, but it is very expensive and the resolution is very low at close range, and the multi-cube method is used as a large screen display device for indoor use, but the screen is divided and the price is relatively high. There is a disadvantage.

Recently, a method using a relatively inexpensive plastic material (eg, poly carbon) screen is used among the methods of constructing an ultra-large screen (100 inches or more). It is difficult to exceed more than an inch, and a special screen is required to construct a screen larger than that, but the strength may be weak, which may cause warpage. In addition, the processing method for forming an image on the screen with the image screen while transmitting the light projected from the projector is technically difficult and the manufacturing process is complicated, and when the temperature change is severe due to the weakness of the polycarbon, distortion may occur in the super large screen. Can be. In addition, polycarbon has a disadvantage in that light transmittance is lower than that of glass and a specific color transmittance is deteriorated, so that the sharpness of the screen and the reality of the color are inferior.

Projectors using glass as a screen display method have been known to reduce the external light absorption and increase the total reflectivity only by surface processing without special processing of glass, but this also improves the brightness and resolution, but the basic shading control range. Because of its narrowness, it is difficult to use in daylight and there are many problems in eliminating glare, and the light transmission and straightness of the glass limit the angle for viewing images from the front. In other words, even if it is a normal screen from the front side has a disadvantage that the viewing angle that can not be seen if more than a certain angle to the side is narrow.

In addition, in the conventional projector front projection method, it is conveniently used as a method of directly projecting a screen or a wall made of cloth, but this has a disadvantage in that the brightness is weak so that the screen cannot be seen well and the sharpness and image quality are poor.

Conventional Japanese Patent Application Laid-Open No. 09-114001 (1997.5.2) discloses light diffusing characteristics in which the screen surface is in the form of triangular irregularities in order to balance the half-angle angle of the screen and the front luminance. This is an improvement of the light emitting angle, but it has the effect of spreading the left and right viewing angles due to the half-angle angle, but the natural color is changed by the prism phenomenon caused by the triangular prism action of the screen surface, and the brightness is proportionally increased as the viewing angle is spread from the left and right. The brightness was reduced by the aluminum reflective layer, and the resulting black-and-white gradation and contrast ratio were lowered, and the sharpness was reduced as the image of the high light source was projected.

As described above, although the conventional technology attempts to vary the screen surface and reflects the screen brightness as a reflective surface, the grayscale and high-quality screen and high contrast ratio for sharpening the outline of the image generated as the brightness of the screen increases. There was no attempt to realize that.

The present invention has been devised to solve the problems described above, the present invention is to remove the glare phenomenon and scattering by applying a metallic coating (particularly aluminum particles) by agitating with a matte coating on top of the plate glass substrate It is an object of the present invention to provide an antireflective glass screen having a dark reflection layer formed to secure left and right viewing angles of the screen by light amount and reflecting light transmitted from the plate glass substrate under the plate glass substrate.

In addition, an object of the present invention is to provide an antireflective glass screen having a silver particle layer formed between the plate glass substrate and the dark reflection layer in order to maximize the reflectance.

In order to achieve the above object, the present invention is a non-reflective glass screen made of a glass plate glass substrate, a semi-transmissive layer formed on one side of the plate glass substrate to semi-transmit light emitted from the projector, and formed on the other side of the plate glass substrate It provides a non-reflective glass screen, characterized in that it comprises a rock reflection layer for reflecting light transmitted through the plate glass substrate.

In addition, in order to maximize the reflectance provides an anti-reflective glass screen, characterized in that it further comprises a silver particle layer formed between the glass substrate and the rock reflection layer.

1 is a perspective view showing an antireflective glass screen according to an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line AA 'of FIG.

The antireflective glass screen 1 according to an embodiment of the present invention includes a semi-transmissive layer 10, a plate glass substrate 20, a silver particle layer 30, and a rock reflection layer 40.

The plate glass substrate 20 is made of a glass material, the plate glass substrate 20 according to an embodiment of the present invention is preferably made of black glass. By using the plate glass substrate 20 as glass, the image can be displayed at high quality without distortion or deformation.

The semi-transmissive layer 10 is formed on one side of the plate glass substrate 20 and serves to semi-transmit the light emitted from the projector 100. The transflective layer 10 of the anti-reflective glass screen 1 according to an embodiment of the present invention extends the transmission time of the target material of the light emitted from the projector 100 so that the image of the screen is high quality. 20, the metal layer 13 formed on the upper part of the filter layer 13, the metal particle layer 12 formed on the upper part of the filter layer 13, and the fine particles of the metal component on the upper part of the metal particle layer 12, It is preferable to include the fine particle coating layer 11 formed by bass.

The metal fine particles used in the metal fine particle layer 12 and the fine particle coating layer 11 use aluminum particles to remove the glare and to secure the left and right viewing angles of the screen with the amount of scattered light (referring to the amount of light). It is preferable. In general, when a refracting and diffusing material such as silica is contained in a plate glass substrate, the incident image is refracted and diffused to form an image. When the surface is formed with an appropriate particle size, the image is reflected and scattered. Of course, there is a feature that is reflected through the back.

The matte coating agent is formed on the surface of the plate glass substrate together with the metal fine particles, preferably aluminum particles, and serves to prevent discoloration or discoloration of the screen that occurs during long-term use.

The filter layer 13 is preferably formed on the plate glass substrate 20, and in detail, it is preferable that the dark portion is formed in black in order to increase the contrast ratio by making the dark portion darker. That is, the filter layer 13 serves to select brightness.

The silver particle layer 30 is formed between the plate glass substrate 20 and the rock reflection layer 40 to be described later to maximize the reflectance. As described above, when the surface is formed of particles, the image is reflected and scattered, unlike a material using a thin film or silica.

The rock reflection layer 40 is formed at the other side of the plate glass substrate 20, and more specifically, is formed under the silver particle layer 30 to reflect the beam transmitted through the plate glass substrate 20. . The dark reflection layer 40 is formed by adhering a dark PVC sheet such as black, which is captured by a dark PVC sheet to prevent the beam emitted from the projector 100 from penetrating a thin screen. This is to improve the clarity and resolution by making it appear clearly on the screen. Rock reflection layer 40 of the anti-reflective glass screen 1 according to an embodiment of the present invention is preferably formed by a thermal bonding method or a coating method using a conventional adhesive.

3 is a use state diagram showing a state of use of the anti-reflective glass screen according to an embodiment of the present invention.

First turn on the power and operate the projector (100). The projector 100 preferably uses a DLP projector (referring to a new type of projector that projects a fully digital image using digital micromirror device technology). The light reflected by the projector 100 is primarily absorbed and reflected by the transflective layer 10. Since the semi-transparent layer 10 is coated by agitating aluminum particles with the matte coating agent, glare is eliminated, and the left and right viewing angles (wide viewing angle of up to 170 degrees) of the screen can be secured by the amount of light scattered from the aluminum particles. Some light is first reflected by the semi-transmissive layer 10, and secondly, the brightness is increased by the light reflected by the silver particle layer 30, and the black filter layer layer 13 or the plate glass substrate 20 of black color or The light reflected from the rock reflection layer 40 increases the darkness to maximize the contrast ratio to obtain a clear image. In addition, the transflective layer 10 is formed of three layers of the filter layer 13, the metal fine particle layer 12, and the fine particle coating layer 11, thereby extending the retention time of the image, thereby obtaining a clear image. .

The present invention can be variously modified by those skilled in the art without departing from the scope of the claims claimed in the claims, the technical protection scope of the present invention is a specific preferred embodiment described above It is not limited to.

According to the anti-reflective glass screen of the present invention as described above, by applying a metallic coating (particularly aluminum particles) by agitating a matte coating agent on top of the plate glass substrate to remove glare and scattered light amount of the left and right viewing angle of the screen It can be secured, and the silver particle layer is formed between the plate glass substrate and the rock reflection layer can provide an anti-reflection glass screen that can maximize the reflectance.

Claims (6)

In the antireflective glass screen which consists of a plate glass substrate as glass, A transflective layer formed on one side of the plate glass substrate to semi-transmit light emitted from the projector; And An antireflective glass screen comprising a dark reflection layer formed on the other side of the plate glass substrate to reflect light transmitted through the plate glass substrate. The method of claim 1, The semi-transmissive layer is an antireflective glass screen, characterized in that the coating is formed by stirring the fine particles of the metal component with the matte coating agent. The method of claim 1, The semi-transmissive layer is a fine particle coating layer formed by agitating a fine layer formed on the plate glass substrate, a metal fine particle layer formed on the top of the filter layer, and a fine coating of a metal component on the upper portion of the metal fine particle layer with an anti-coating agent. Anti-reflective glass screen, characterized in that comprises a. The method of claim 3, wherein And the metal fine particles are aluminum particles. The method according to any one of claims 1 to 4, The anti-reflective glass screen further comprises a silver particle layer formed to maximize the reflectance between the plate glass substrate and the rock reflection layer. The method of claim 5, The plate glass substrate is anti-reflective glass screen, characterized in that made of black glass.

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