KR20120007101A - Apparatus and system for displaying image - Google Patents

Abstract

PURPOSE: An image display and a system thereof are provided to maximize photonic efficiency and enable the formation of a dual screen. CONSTITUTION: An image display comprises a first polarizing beam splitter(120), a first liquid crystal image display device(130), a second polarizing beam splitter(150), and a second liquid crystal image display device(160). The first polarizing beam splitter polarizes one incident light to a first wave and a second wave. The first liquid crystal image display device reflects the first wave, which is polarized and separated by the first polarizing beam splitter, in the panel. The first liquid crystal image display device first makes the first wave pass through a liquid crystal display and be deformed into the second wave for the formation of the first screen. The second polarizing beam splitter polarizes and separates the second wave, which is polarized and separated from the first polarizing beam splitter, into the first and second waves. The second liquid crystal image display device reflects the second wave from the panel. The second liquid crystal image display device make the second wave pass through the liquid crystal display and be deformed into the first wave for the formation of the second screen.

Description

Image display device and system thereof {APPARATUS AND SYSTEM FOR DISPLAYING IMAGE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display technology. In particular, an image display device such as a beam projector device that maximizes light efficiency and configures a dual screen by utilizing a light source that is discarded for one light source, and an image including the same It relates to a display system.

Background Art [0002] Conventionally, an image display device such as a beam projector device has a problem in that light utilization efficiency is extremely low due to polarization when using polarization of liquid crystal display technology. As such, the amount of the light source discarded due to the low light efficiency compared to the light source is considerable, and the light source thus discarded is lost as it is without utilization.

In addition, since the conventional video display device basically configures only one screen for one light source, there is a limitation that cannot be used for an image application through a dual screen configuration.

In this background, an object of the present invention is to use a light source that is discarded for one light source, to maximize the light efficiency and to configure a dual screen image display device such as a beam projector device and an image display system including the same To provide.

In addition, another object of the present invention, by allowing a dual screen to be configured by using a light source that is discarded for one light source, a beam projector device that can be applied to the field of video applications by enabling the display of various image information An image display device and an image display system including the same are provided.

In order to achieve the above object, in one aspect, the present invention, the first polarizing separator for polarizing separation of one incident light into a first wave and a second wave; A first liquid crystal screen display device in which the first wave polarized by the first polarization separator is reflected by the panel, is converted into a second wave while passing through the liquid crystal, and is output for configuration of the first screen; A second polarization separator for polarizing separation of the second wave polarized by the first polarization separator into a first wave and a second wave; And a second liquid crystal display device for reflecting the second polarized light separated by the second light splitter back from the panel, transforming the first wave while passing through the liquid crystal, and outputting the second wave to form a second screen. To provide.

In another aspect, the present invention, the first polarization separator for polarizing separation of one incident light into the first wave and the second wave, and the first polarized light separated from the first polarization separator in the panel and reflects through the liquid crystal to pass the second A first liquid crystal display device for transforming and outputting a wave, a second polarization separator for polarizing and separating the second wave polarized by the first polarization separator into a first wave and a second wave, and again polarizing in the second flat separator An image display device including a second liquid crystal display that reflects the separated second wave from the panel, passes the liquid crystal, and converts the second wave into a first wave; A first screen displaying a first screen by projecting a second wave output from the first liquid crystal display; And a second screen on which the first wave output from the second liquid crystal display is projected to display the second screen.

As described above, according to the present invention, an image display device such as a beam projector device for maximizing the light efficiency and configuring a dual screen by utilizing a light source discarded for one light source, and an image display system including the same Has the effect of providing.

In addition, according to the present invention, by allowing a dual screen to be configured by using a light source discarded for one light source, it is possible to display a variety of image information, such as a beam projector device that can be applied to video application fields There is an effect of providing a display device and an image display system including the same.

1 is a view schematically illustrating a video display device according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating the image display device of FIG. 1 in more detail.
3 is a diagram illustrating an image display device in which a polarizing plate is installed to improve an image contrast ratio.
FIG. 4 illustrates a polarization signal (first wave and second wave) synchronized with one incident light to two liquid crystal display devices in order to configure a dual screen in the image display device according to an exemplary embodiment of the present invention. It is a figure which shows what to offer.
FIG. 5 is a diagram illustrating a principle in which light is separated and distributed when light is incident on a polarization separator in an image display device according to an exemplary embodiment of the present invention.
6 is a diagram schematically illustrating an image display system according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used to refer to the same components as much as possible even if displayed on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, in describing the component of this invention, terms, such as 1st, 2nd, A, B, (a), (b), can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be "connected", "coupled" or "connected".

1 is a diagram schematically illustrating an image display apparatus 100 according to an exemplary embodiment.

The image display apparatus 100 according to an exemplary embodiment of the present invention illustrated in FIG. 1 is an image display apparatus that allows a dual screen to be configured for one incident light.

As illustrated in FIG. 1, the image display apparatus 100 according to an exemplary embodiment of the present invention may include two polarizing separators (PBS) including a first polarization separator 120 and a second polarization separator 150. Two liquid crystal display devices including a beam splitter, a first liquid crystal display device 130, and a second liquid crystal display device 160.

The first polarization separator 120 polarizes one incident light input from the light source 110 into a first wave and a second wave.

The first liquid crystal display device 130 reflects the first wave polarized by the first polarization separator 120 on the panel, transforms the reflected first wave into a second wave through the liquid crystal, Output for configuration.

The second polarization separator 150 polarizes the second wave separated from the first polarization separator 120 into the first wave and the second wave. Here, the reason why the second polarized light separator 150 polarizes the second wave polarized by the first polarized light separator 120 into the first wave and the second wave is the first polarized light separated by the first polarized light separator 120. This is because the second wave may not be a complete second wave, but may also include a first wave component.

The second liquid crystal display device 160 reflects the second wave polarized by the second flat splitter 150 again on the panel, transforms the reflected second wave into a first wave through the liquid crystal, and converts the second wave into a second screen. Output for configuration.

One of the first and second waves mentioned above can be a P pie and the other can be an S-file. Here, the P wave is light traveling parallel to the diagonal boundary surface in the first polarization separator 120 or the second polarization separator 150, and the S wave is the diagonal boundary surface in the first polarization separator 120 or the second polarization separator 150. It is a light that goes perpendicular to it.

In order to enable the image display apparatus 100 according to the exemplary embodiment of the present invention to enable a dual screen configuration, the first liquid crystal screen display device 130 and the second liquid crystal display device 160 are provided with respect to one incident light. Are synchronized.

The image display apparatus 100 according to an exemplary embodiment of the present invention may include a light emitting diode (LED) light source or a laser light source as the light source 110 for one incident light. Here, the LED light source may be an RGB LED light source including a red LED, a green LED, and a blue LED.

The image display apparatus 100 according to an exemplary embodiment of the present invention may include, for example, a liquid crystal on silicon (LCoS) display including a panel and a liquid crystal display as a first liquid crystal display and a second liquid crystal display. It may be implemented as a beam projector device.

As such, when the image display apparatus 100 according to the exemplary embodiment of the present invention is a beam projector apparatus, as illustrated in FIG. 1, the second wave output from the first liquid crystal display apparatus 130 may be a first wave. It moves vertically through the polarization separator 120 and is projected onto the first screen 140 to form a first screen, and the first wave output from the second liquid crystal display device 160 controls the second polarization separator 150. The horizontal screen is moved to be projected onto the second screen 170 to form a second screen.

The image display apparatus 100 according to an exemplary embodiment of the present invention illustrated in FIG. 1 includes two polarization separators including a first polarization separator 120 and a second polarization separator 150, and a first liquid crystal display. In addition to the two liquid crystal display devices including the device 130 and the second liquid crystal display device 160, an additional configuration such as a lens or a prism on the path through which the light passes to refract light or change a path, etc. It may be further provided.

FIG. 2 is a view illustrating in more detail the image display apparatus 100 according to an exemplary embodiment of FIG. 1 having an additional configuration on a path through which light passes.

Referring to FIG. 2, the image display device 100 according to an exemplary embodiment of the present invention may include a condenser lens 210, a flyeye lens 230, The display device may further include a first focusing lens 240 and a second focusing lens 250, and may further include a turning prism 220 to change a path of light.

The image display apparatus 100 according to an exemplary embodiment of the present invention may include a light emitting diode (LED) light source or a laser light source as a light source 110 for one incident light. Exemplary illustrated light source 110 is an RGB LED light source 200 that includes a red LED (R), a green LED (G), and a blue LED (B). Here, the RGB LED light source 200 adjusts the ratio of each of the red light emitted from the red LED (R), the green light emitted from the green LED (G), and the blue light emitted from the blue LED (B) to adjust a specific color. It may also include an X-cube (Cube) that emits light having incident light.

On the other hand, the image display device 100 according to an embodiment of the present invention, in order to provide a clear dual screen, that is, to improve the image contrast ratio, the incident light, the first wave (polarization) and the second wave (polarization) One or more polarizing plates may be installed on one or more light paths.

For example, between the output side of the first liquid crystal display device 130, between the first polarization separator 120 and the second polarization separator 150, and the output side of the second liquid crystal display device 160, and the like. The polarizer may be installed at one or more positions.

3 is a diagram illustrating an image display apparatus 100 in which a polarizing plate is installed to improve an image contrast ratio.

Referring to FIG. 3, the image display device 100 according to an embodiment of the present invention may include, for example, a first output from the first liquid crystal display device 130 to improve an image contrast ratio of the first screen. Before the two waves are projected onto the first screen 140, in order to improve the polarization of the second wave, a polarizing plate 310 may be installed between the first polarization separator 120 and the first focusing lens 240. .

In addition, referring to FIG. 3, the image display device 100 according to an exemplary embodiment may include a second wave polarized by the first polarization separator 120 to improve an image contrast ratio of a second screen. Before entering the second polarization separator 150, in order to improve the polarization of the second wave, the polarizing plate 320 may be installed between the first polarization separator 120 and the second polarization separator 150.

In addition, referring to FIG. 3, the video display device 100 according to an embodiment of the present invention may include a first output from the second liquid crystal display device 160 to improve an image contrast ratio of the second screen. Before the wave is projected onto the second screen 170, in order to improve the polarization of the first wave, a polarizer 330 may be installed between the second polarization separator 150 and the second focusing lens 250.

Meanwhile, in the image display apparatus 100 according to an embodiment of the present invention, the first polarization separator 120 and the second polarization separator 150 may be attached with a polarizing film to improve an image contrast ratio. have.

FIG. 4 illustrates a polarization signal (first wave, synchronized with respect to one incident light) in order to form a dual screen (= first screen + second screen) in the image display apparatus 100 according to an exemplary embodiment of the present invention. FIG. 2 shows the second wave) provided to the two liquid crystal display devices 130 and 160, respectively.

Referring to FIG. 4, in order to project a dual screen including a first screen and a second screen, signal synchronization of the driving board 420 is applied to one incident light (RGB light source or RGB signal) supplied by a light source driver. By the module, a synchronized signal is provided to each of the panels of the first liquid crystal display device 130 and the second liquid crystal display device 140.

FIG. 5 is a view for explaining a principle in which light is separated and distributed when light is incident on a polarization separator in the image display apparatus 100 according to an exemplary embodiment.

In FIG. 5, it is assumed that the polarization separator is the first polarization separator 120, and the incident light L is the incident light, and the first wave is used to explain the principle that the light incident to the polarization separator is divided by polarization. Is assumed to be P wave, and the second wave is S wave.

Referring to FIG. 5, the first polarization separator 120 polarizes the incident incident light L into P waves L1 and S waves L2, and the P waves L1 are parallel to the diagonal boundary. S wave L2 distributes P wave L1 and S wave L2 so as to advance perpendicularly to the diagonal boundary.

Referring to FIG. 5, the P wave L1 distributed by polarization separation in the first polarization separator 120 is incident on the first liquid crystal display device 130 and reflected by the panel 510. The reflected P wave L1 is transformed into S wave L1 'while passing through the liquid crystal 520. The S wave L1 ′ thus modified is incident to the first polarized light separator 120 and distributed so as to be perpendicular to the diagonal boundary.

The image display apparatus 100 according to an exemplary embodiment of the present invention described above enables a dual screen to be configured by using a light source that is discarded with respect to one incident light, thereby displaying various image information. It can be applied to imaging applications.

For example, the first screen configured by the second wave (eg, S wave) output from the first liquid crystal display device 130 and the first wave (eg, output from the second liquid crystal display device 160). One of the second screens configured by P waves) may be an image output screen on which an image to be output (displayed) is output, and the other one may be a control screen for controlling image output.

The above-described control screen is implemented on a screen (first screen 140 or second screen 170) which is implemented as a touch screen and serves as an input device, and a keyboard or a mouse is displayed so that the user displays an image output screen. In order to control the output of the image output to the touch screen, when a touch operation on the keyboard or mouse, etc. displayed on the control screen on the touch screen, a separate computer or device receives a touch operation signal for controlling the image output is output to the image output screen The output of the image can be controlled.

One incident light includes a first wave component and a second wave component that can be polarized and separated, and one component of the first wave component and the second wave component carries information for configuring an image output screen, and the other component contains a control screen. Information for constructing the information may be carried.

6 is a diagram schematically illustrating an image display system 600 according to an embodiment of the present invention.

Referring to FIG. 6, an image display system 600 according to an exemplary embodiment includes an image display device 100, a first screen 610, a second screen 620, and the like.

The image display device 100 includes a first polarization separator 120 for polarizing separation of one incident light input from the light source 110 into a first wave and a second wave, and a first polarization separation in the first polarization separator 120. In the first liquid crystal display device 130 and the first polarization separator 120, the wave is reflected by the panel, the reflected first wave passes through the liquid crystal, and is converted into a second wave to be output for the construction of the first screen. A second polarized light separator 150 that polarizes and separates the second polarized light into a first wave and a second wave, and a second wave polarized and separated again by the second flat light separator 150 to reflect and reflect the light on the panel And a second liquid crystal display device 160 for converting two waves into a first wave through the liquid crystal and outputting the first wave to form a second screen.

The first screen 610 displays the first screen by projecting a second wave output from the first liquid crystal display device 130.

The second screen 620 displays the second screen by projecting the first wave output from the second liquid crystal display device 160.

At least one of the above-described first screen 610 and second screen 620 may be implemented as a touch screen. Accordingly, at least one of the first screen and the second screen may be a screen providing a virtual touch function. Can be.

As described above, according to the present invention, by using a light source discarded for one light source 110, the beam projector device to maximize the light efficiency and to configure a dual screen (first screen + second screen) There is an effect of providing an image display device 100 and the like, and an image display system 600 including the same.

In addition, according to the present invention, the dual screen (first screen + second screen) can be configured by using the light source discarded for one light source 110, thereby enabling the display of various image information There is an effect of providing an image display device 100 such as a beam projector device that can be applied to an application field and an image display system 600 including the same.

In the above description, all elements constituting the embodiments of the present invention are described as being combined or operating in combination, but the present invention is not necessarily limited to the embodiments. In other words, within the scope of the present invention, all of the components may be selectively operated in combination with one or more. In addition, although all of the components may be implemented in one independent hardware, each or all of the components may be selectively combined to perform some or all functions combined in one or a plurality of hardware. It may be implemented as a computer program having a. Codes and code segments constituting the computer program may be easily inferred by those skilled in the art. Such a computer program may be stored in a computer readable storage medium and read and executed by a computer, thereby implementing embodiments of the present invention. The storage medium of the computer program may include a magnetic recording medium, an optical recording medium, a carrier wave medium, and the like.

In addition, the terms "comprise", "comprise" or "having" described above mean that the corresponding component may be included, unless otherwise stated, and thus excludes other components. It should be construed that it may further include other components instead. All terms, including technical and scientific terms, have the same meanings as commonly understood by one of ordinary skill in the art unless otherwise defined. Terms commonly used, such as terms defined in a dictionary, should be interpreted to coincide with the contextual meaning of the related art, and shall not be construed in an ideal or excessively formal sense unless explicitly defined in the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

Claims (10)

A first polarization separator for polarizing separation of one incident light into a first wave and a second wave;
A first liquid crystal display device for reflecting the first wave polarized by the first polarization separator on a panel, passing the liquid crystal, converting the first wave into a second wave, and outputting the second wave to form a first screen;
A second polarization separator for polarizing separation of the second wave polarized by the first polarization separator into a first wave and a second wave; And
And a second liquid crystal screen display device for reflecting the second wave polarized by the second light splitter again on the panel, passing the liquid crystal, transforming the second wave into a first wave, and outputting the second wave to form a second screen. The method of claim 1,
And one of the first wave and the second wave is a P pie and the other is an S wave. The method of claim 1,
And at least one polarizer on a path of at least one of the incident light, the first wave, the second wave, and light. The method of claim 1,
And the first polarizer and the second polarizer are attached with a polarizing film. The method of claim 1,
One of the first screen and the second screen is an image output screen and the other is a control screen for controlling the image output screen,
The one incident light includes a first wave component and a second wave component that can be polarized and separated, and one component of the first wave component and the second wave component is loaded with information for configuring the image output screen. And a component carries information for constituting the control screen. The method of claim 1,
The first liquid crystal display device and the second liquid crystal display device,
And a video signal synchronized with the one incident light. The method of claim 1,
And a light emitting diode (LED) light source or a laser light source as a light source for the one incident light. The method of claim 1,
The video display device,
And a beam projector device in which the first liquid crystal display and the second liquid crystal display are implemented as a liquid crystal on silicon (LCoS) display including a panel and a liquid crystal. A first polarization separator for polarizing and separating one incident light into a first wave and a second wave, and a first liquid crystal for reflecting the first wave polarized and separated by the first polarization separator on a panel, passing the liquid crystal, and transforming the second wave into a second wave A display device, a second polarization separator for polarizing separation of the second wave polarized by the first polarization separator into a first wave and a second wave, and a second wave polarization separation in the second polarization separator on the panel An image display device including a second liquid crystal display device for reflecting, passing the liquid crystal, and converting the first wave into a first wave;
A first screen displaying a first screen by projecting a second wave output from the first liquid crystal display; And
And a second screen displaying the second screen by projecting the first wave output from the second liquid crystal display. 10. The method of claim 9,
At least one of the first screen and the second screen is implemented as a touch screen.

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