WO2013180349A1

WO2013180349A1 - Partially transparent display device

Info

Publication number: WO2013180349A1
Application number: PCT/KR2012/009184
Authority: WO
Inventors: 이건호; 박용훈
Original assignee: (주)코텍
Priority date: 2012-05-29
Filing date: 2012-11-02
Publication date: 2013-12-05
Also published as: KR20130031769A; KR101357185B1

Abstract

A partially transparent display device is disclosed. The disclosed partially transparent display device comprises: a display unit; and a selective display unit which is arranged on one side of the display unit such that a penetration ratio thereof is controlled according to an applied driving voltage, and in which a penetration ratio of a particular area is selectively controlled such that a video image of the display unit can be visible through the particular area.

Description

Partially transparent display device

The present invention relates to a partially transparent display device, and more particularly, to a partially transparent display device in which the front display unit and the rear display unit display a predetermined image in combination.

In general, the liquid crystal display device is used in the slot machine game apparatus using the rotating reel display means to induce the interest of the game and to produce a more colorful video image.

Usually, the liquid crystal display device is disposed in front, and an opening is formed in the light guide plate constituting the backlight of the liquid crystal display device. And, the rear of the opening is provided with a rotating reel equipped with a reel band designed symbol mark. Therefore, the image image of the rear rotating reel display means is projected through the opening of the light guide plate, and at the same time, the image image related to the game is displayed through the front liquid crystal display device, thereby inducing interest of the game participant.

On the other hand, Korean Patent Publication No. 10-2011-0045753 (published: 2011.05.04) discloses a "display device".

It is an object of the present invention to provide a partially transparent display device which has a simple structure and is provided with a light emitted from a light source unit of a selective display unit on the surface of the display unit, and a step is not generated on the entire screen.

Partially transparent display device according to the invention, the display unit; And an optional display unit configured to control transmittance according to a driving voltage applied to one side of the display unit and selectively control a transmittance of a specific region so that an image image of the display unit can be viewed through the specific region.

The selective display unit may further include a display panel configured to output a video image; A partial transparency controller disposed at the rear of the display panel to control transmittance according to an applied driving voltage, and selectively transmittance of the specific region; And a light source unit disposed behind the partial transparency control unit to provide a backlight to the partial transparency control unit.

In addition, the partial transparency control unit is preferably at least one of partial transparent PDLC or partial transparent PSCT.

In addition, the partially transparent control unit includes a partially transparent PDLC; The partially transparent PDLC may include a liquid crystal in which transmittance is controlled according to a driving voltage applied thereto; And a first ITO layer disposed on the front and rear surfaces of the liquid crystal and mounted so as to intersect and overlap the specific region of the liquid crystal to selectively selectively control the partial transparency, and selectively apply a driving voltage to the specific region of the liquid crystal. It is preferable to include a 2ITO layer.

In addition, an ITO layer of one of the first ITO layer and the second ITO layer may have a width equal to a width of a specific region of the liquid crystal and is mounted on one surface of the liquid crystal in a form extending in the vertical direction; The other ITO layer is preferably mounted on the other surface of the liquid crystal in a form extending in the horizontal direction and having the same length as that of the specific region of the liquid crystal.

The light source unit may include: a light source disposed behind the edge of the partially transparent PDLC, provided in a form extending in one direction, configured of a plurality of LED elements, and configured to emit a backlight by a light source driving voltage applied thereto; And a light dissipation member disposed to be in close contact with the light source to disperse the backlight of the light source to emit a uniform amount of light as a whole.

In addition, the partially transparent display device according to the present invention, and a rotating reel display device; A display panel provided in front of the rotating reel display device to output a video image; A liquid crystal disposed between the display panel and the rotating reel display device and having transmittance controlled according to a driving voltage applied thereto; First and second ITO layers disposed on the front side and the rear side of the liquid crystal, and alternately intersect and overlap each other with a specific region of the liquid crystal to selectively control the partial transparency, and selectively apply a driving voltage to the specific region of the liquid crystal; ; A light source disposed behind the edge of the liquid crystal and extending in one direction to constitute a plurality of LED elements and emitting a backlight by a light source driving voltage applied thereto; And a light dissipation member disposed to be in close contact with the light source to disperse the backlight of the light source to emit a uniform amount of light as a whole.

As described above, according to the present invention, it is possible to selectively display the full screen or the combined image screen of the front display means and the rear display means without the configuration of the back light, such as the light guide plate and the second light source, so that compared with the prior art Its simple structure makes it possible to improve productivity.

In addition, since a light guide plate is not used to provide a backlight of the light source unit to the display panel, and a method of directly irradiating from the light source unit is used, the backlight emitted from the light source unit of the front display means is reflected on the surface of the rear display means, or on the entire screen. The step is prevented from occurring.

In addition, the above-described effects of the present invention are not limited to a game device such as a slot machine, and a technology for implementing 2D and 3D images and other front displays in a display device that combines a front display and a rear display to realize a stereoscopic image. And the image display technology by a combination of the rear display can be usefully used.

1 is a cross-sectional view showing the configuration of a conventional liquid crystal display device.

2 is an exploded perspective view showing the configuration of a partially transparent display device according to an embodiment of the present invention.

3 is a cross-sectional view showing the configuration of a partially transparent display device according to an embodiment of the present invention.

Figure 4 is a perspective view showing the configuration and operation principle of the partial transparent control unit according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating an operation principle in which an image image of the front display means is output for the entire screen in the partially transparent display device according to an embodiment of the present invention.

6 is a cross-sectional view illustrating an operation principle of outputting a combined image of the front display unit and the rear display unit in the partially transparent display device according to an embodiment of the present invention.

7 is a schematic diagram illustrating a signal flow of a partially transparent display device according to an embodiment of the present invention.

Hereinafter, an embodiment of a partially transparent display device according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is an exploded perspective view showing the configuration of a partially transparent display device according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing the configuration of a partial transparent display device according to an embodiment of the present invention, Figure 3 is a present invention 4 is a perspective view illustrating a configuration and an operation principle of a partial transparent control unit of a partial transparent display device according to an embodiment of the present invention, and FIG. 4 is an image image of an optional display unit in a partial transparent display device according to an embodiment of the present invention. 5 is a cross-sectional view illustrating an operation principle of outputting, and FIG. 5 is a cross-sectional view illustrating an operation principle of outputting a combined image image of a display unit and an optional display unit in a partially transparent display device according to an embodiment of the present invention, and FIG. A schematic diagram showing a signal flow of a partially transparent display device according to an embodiment of the present invention.

1 to 6, a partially transparent display device according to an embodiment of the present invention includes a display unit 200 and an optional display unit 100, and the optional display unit 100 includes a display unit 200. Is located in front of.

The partially transparent display device of the present exemplary embodiment operates so that an image image of the display unit 200 can be simultaneously viewed through a partial region of the selective display unit 100. Such a partially transparent display device may be used as a game device such as a slot machine, or a game device in which a video image of the display unit 200 and a video image of the selective display unit 100 are combined and displayed, a 3D stereoscopic image display device, and an electronic device. It can be applied in various forms such as a picture frame.

In the present embodiment, a case in which the reel display device is provided as the display unit 200 and the liquid crystal display device is provided as the selective display unit 100 will be described as an example. The rotating reel display device variably displays a symbol mark printed on a reel band of the rotating reel, and may be configured to determine whether or not to win according to a combination of symbol marks.

In another embodiment, the display unit 200 may be replaced with another type of display apparatus. For example, display panels such as a known liquid crystal display (LCD), a plasma display panel (PDP), an organic light emitting diode (OLED), and an active matrix organic light emitting diode (AMOLED) may be installed. In another embodiment, the display 200 may include a photo or an object (eg, jewelry) that displays a predetermined image.

In this case, the display unit 200 displays a video image corresponding to the game contents, and allows the video image corresponding to the game contents to be viewed through the selective display unit 100. Here, since the display panel installed as the display unit 200 is the same as a conventionally known display device, a detailed description of the internal structure including the backlight will be omitted.

On the other hand, in the embodiment of the figure illustrates that the present invention is applied to the slot machine game device, the partial transparent display device according to the present embodiment is able to see through a plurality of areas of the optional display unit 100, the optional display unit ( 100 and the display unit 200 may be implemented to display a 3D stereoscopic image by displaying a combination of image images, and various modifications are possible.

Hereinafter, a case in which the selective display unit 100 is a liquid crystal display device and the display unit 200 is a rotating reel display device will be described.

Referring to FIG. 2, the display unit 200 has a shape in which a reel band 202 is attached to an outer circumferential surface of a rotating reel, and a symbol mark related to a game (not shown) is drawn on the reel band 202. The display lighting unit 203 for illuminating a symbol mark is installed inside or outside the rotating reel 201.

According to this, the display lighting unit 203 illuminates the rotating reel 201 to enable the symbol mark image image of the rotating reel 201 to be viewed from the front, and when the rotating reel 201 stops rotating and the selective display unit ( It is determined whether or not to win the game by a combination of symbol marks projected through 100).

1 and 6, the selective display unit 100 according to an exemplary embodiment of the present invention includes a display panel 110, a partial transparency control unit 120, and a light source unit 130.

The display panel 110 is a component that outputs an image image. In this embodiment, the display panel 110 is illustrated as a liquid crystal panel. As shown in FIG. 1, the display panel 110 is provided in a form in which polarizing

films

111 and 114 are installed on the front and rear surfaces of the panel on which the TFT substrate 113 and the color filter 112 are bonded.

The TFT substrate 113 is an array substrate in which pixels and pixel electrodes are arranged in a matrix form and the gate metal and the source metal are wired vertically and horizontally, similarly known liquid crystal panels, and the color filter 112 is formed on the glass substrate. G, B patterns are printed or R, G, B film is coated substrate.

Although not shown, a drive IC is mounted on the side of the panel on which the TFT substrate 113 and the color filter 112 are bonded, and liquid crystal is enclosed between the TFT substrate 113 and the color filter 112. The polarizing

films

111 and 114 are patterns printed in directions perpendicular to each other. When the polarization direction of the light is switched according to the movement of the liquid crystal, the

polarization films

111 and 114 determine transmission and blocking of light to implement various colors through the color filter 112. It is a film that enables.

Although not shown, the display panel 110 may further include other components such as a protective film or glass. In addition, as shown in FIG. 6, the display panel 110 receives the image data of the DVI and VGA formats from the AD board 116 and outputs the image image toward the front.

The partial transparency controller 120 is disposed at the rear of the display panel 110 to allow the image of the display 200 to be selectively viewed from the front. The partial transparency controller 120 controls transmittance according to the driving voltage applied thereto, and transmittance is selectively controlled in the specific region A. FIG.

The partial transparency control unit 120 includes at least one of a partially transparent PDLC (Polymer Dispersed Liquid Crystal) or a partially transparent Polymer Stabilized Cholesteric Texture (PSCT).

The partial transparency controller 120 according to the present embodiment includes a partial transparency PDLC, and the first ITO layer 122 disposed on the front side and the rear side of the liquid crystal 121 and the liquid crystal 121 whose transmittance is controlled according to the driving voltage applied thereto. And a second ITO layer 123.

In the present embodiment, the first ITO layer 122 and the second ITO layer 123 are illustrated as being provided on the front and rear surfaces of the liquid crystal 121. The first ITO layer 122 and the second ITO layer 123 are mounted so as to intersect and overlap each other in the specific region A of the liquid crystal 121 to be selectively partially controlled. The first ITO layer 122 and the second ITO layer 123 serve to selectively apply a driving voltage to the specific region A of the liquid crystal 121.

In the present embodiment, the liquid crystal 121 is illustrated as being a panel including the liquid crystal in the polymer without using a polarizing film. In the liquid crystal 121, the liquid crystal molecules are opaque and block light while the PDLC driving voltage is not applied, and the liquid crystal is aligned and transparent when the PDLC driving voltage is applied, thereby switching to a transmissive state.

At this time, the liquid crystal 121 receives the PDLC driving voltage through the

transparent ITO layers

122 and 123 mounted on both sides, and operates only in a region where the PDLC driving voltage is applied by being in contact with the ITO layers 122 and 123 among the entire regions. The area becomes transparent, and other areas become inoperable and remain opaque.

In the partially transparent display device according to the exemplary embodiment of the present invention, the rotating reel image of the display unit 200 is viewed from the front using the characteristics of the liquid crystal 121 as described above. On both sides, the ITO layers 122 and 123 are mounted in contact with each other to selectively become transparent or opaque.

To this end, as shown in FIG. 3, the first ITO layer 122 has a width equal to the width W of the specific region A and is mounted on the front surface of the liquid crystal 121 in a vertically extending direction. In addition, the second ITO layer 123 has the same length as the length L of the specific region A and is mounted on the rear surface of the liquid crystal 121 in a form extending in the horizontal direction. The first ITO layer 122 and the second ITO layer 123 receive PDLC driving voltages from the PDLC driver 124, as shown in FIG. 6, through the

ITO electrodes

122a and 123a formed at the end portions, respectively.

Therefore, as shown in FIG. 3, when the PDLC driving voltage is applied through the

ITO electrodes

122a and 123a, the first ITO layer 122 and the first ITO layer 122 are interposed between the liquid crystals 121 in the entire region of the liquid crystals 121. Only the specific region A in which the 2ITO layers 123 overlap each other is driven to be transparently controlled.

The light source unit 130 is disposed behind the edge of the partial transparency control unit 120. The light source unit 130 is a component that illuminates the rear surface of the partial transparency control unit 120 so that the image image output by the display panel 110 can be viewed from the front side, and is disposed behind the partial transparency control unit 120. The backlight is provided to the display panel 110 and the partial transparency controller 120.

In more detail, as illustrated in FIG. 1, the light source unit 130 is provided to extend in one direction. The light source unit 130 includes a light source 131 having a plurality of LED elements (not shown) in a circuit configuration. The light source 131 emits a backlight by a light source driving voltage applied to the plurality of LED elements, and receives the light source driving voltage from the light source controller 133 as shown in FIG. 6.

In the present exemplary embodiment, four light sources 131 are illustrated at both sides of the partial transparency control unit 120 and at an upper side and a lower rear side, but the present invention is not limited thereto. As another example, the light source 131 may be arranged in two or three within the range that the backlight can be provided evenly with the amount of light required for the entire area of the partial transparency control unit 120, of course, for each side A plurality of rows such as two rows or three rows may be arranged.

As the light source 131, various kinds of lamps used as light sources in the technical field to which the present invention belongs, such as CCFL (Cold Cathode Fluorescent Lamp), may be used. However, in consideration of power consumption and light efficiency, the LED device may be used as a light source. It is preferable to use.

On the other hand, the partially transparent display device of the present embodiment further includes a light dispersing member 132 disposed in close contact with the light source 131. The light dissipation member 132 serves to disperse the backlight of the light source 131 so that the backlight of the light source 131 is emitted with a uniform amount of light.

The light scattering member 132 is a light source 131 so that a light quantity difference does not occur between a position where the LED elements are disposed and a position where a gap is formed between the LED elements due to the high brightness linearity inherent in the LED elements used as the light source 131. By dispersing the backlight, the backlight of the light source 131 is emitted with a uniform amount of light, thereby allowing the overall brightness of the output image image to be uniform.

The light scattering member 132 as described above may be formed of a transparent material so that the backlight is transmitted in a dispersed state, and a predetermined pattern may be formed to scatter light, or may be formed of an opaque or semitransparent material. The light source 131 may be formed to cover only a portion of the outer surface of the 131 where the backlight is output toward the partially transparent PDLC 120.

In addition, although not shown, a reflective sheet for reflecting the light emitted backward from the light source to the front may be mounted on the rear surface of the light dispersion member 132.

The light source unit 130 is rearward from the partial transparent control unit 120 by a predetermined interval so that the light emitted from the light source 131 with respect to the entire area of the partial transparent control unit 120 is irradiated to the entire area of the partial transparent control unit 120. 4 and 5, the backlight unit 200 emits a backlight in a diagonal direction toward the partial transparency controller 120.

Hereinafter, the operation principle of the partially transparent display device according to an exemplary embodiment of the present invention will be described with reference to FIGS. 4 to 6.

4 and 6, the display panel 110 receives and drives image data from the AD board 116, and accordingly, the display panel 110 has an image image corresponding to the entire screen of the display panel 110. Is output toward the front.

In this state, when the image image of the optional display unit 100 is displayed on the entire screen of the display panel 110, the PDLC driving voltage is not applied to each of the ITO layers 122 and 123 of the partial transparency controller 120. In addition, the light source driving voltage is applied to the light source unit 130.

Accordingly, since the liquid crystal 121 of the partial transparency controller 120 is opaque and the backlight is irradiated from the light source 131 to the rear surface of the partial transparency controller 120, the image image output from the display panel 110 is displayed on the entire screen. It becomes possible to see from the front.

On the other hand, as shown in FIG. 1, when the image image of the selective display unit 100 and the rotating reel image image of the display unit 200 are combined and displayed at the same time, the display panel 110 is the AD board 116. When the image data is output from the display panel 110 toward the front, the PDLC driving voltage is applied to each of the ITO layers 122 and 123 of the partial transparency controller 120 and the light source unit is driven. 130 is applied to the light source driving voltage.

As the light source driving voltage is applied to the light source unit 130, the specific area A of the partial transparency controller 120 becomes transparent, and the image image of the rotating reel 201 of the display unit 200 displays the specific area A. It becomes possible to see from the front through. At the same time, since the remaining area of the liquid crystal 121 except for the specific area A is maintained in an opaque state, the image image output from the display panel 110 is received from the backlight of the light source 131 so that it can be viewed from the front.

Thus, in front of the partially transparent display device, a video image screen in which the video image of the selective display unit 100 and the rotating reel image of the display unit 200 are combined may be displayed.

As described above, the entire screen or the display unit 200 and the optional display unit of the display panel 110 may be configured without the configuration of a rear backlight such as a light guide plate by the configuration and function of the partially transparent display device according to the exemplary embodiment of the present invention. The combined image image screen of 100) can be selectively displayed, so that the productivity can be improved since the structure is relatively simple compared to the prior art.

In addition, since the light guide plate is not used to provide the backlight of the light source unit 130 to the display panel 110, and the backlight is directly irradiated to the partial transparency controller 120, the light source unit of the selective display unit 100 may be used. The backlight emitted from 130 may be reflected on the surface of the display unit 200, or the step may be prevented from occurring on the entire screen.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims.

Claims

A display unit; And

Transmittance is controlled in accordance with the driving voltage is disposed on one side of the display unit, and the transmittance of the specific region is selectively controlled to include an optional display unit for allowing the image image of the display unit to be visible through the specific region Partial transparent display device.
The method of claim 1,

The optional display unit,

A display panel for outputting an image image;

A partial transparency controller disposed at the rear of the display panel to control the transmittance according to the driving voltage applied and selectively transmit the transmittance in the specific region; And

And a light source unit disposed behind the partial transparency control unit to provide a backlight to the partial transparency control unit.
The method of claim 2,

The partial transparency control unit is at least one of a partially transparent PDLC or a partially transparent PSCT.
The method of claim 2,

The partial transparency controller comprises a partial transparent PDLC;

The partially transparent PDLC may include a liquid crystal in which transmittance is controlled according to a driving voltage applied thereto; And

A first ITO layer and a second ITO disposed on the front and rear surfaces of the liquid crystal, respectively, intersecting and overlapping with a specific region of the liquid crystal to selectively selectively control the partial transparency, and selectively applying a driving voltage to the specific region of the liquid crystal; A partially transparent display device comprising a layer.
The method of claim 4, wherein

An ITO layer of one of the first ITO layer and the second ITO layer has a width equal to a width of a specific region of the liquid crystal and is mounted on one surface of the liquid crystal in a form extending in the vertical direction;

The other ITO layer has a length equal to the length of a specific region of the liquid crystal and is partially transparent display device, characterized in that mounted on the other surface of the liquid crystal in a form extending in the horizontal direction.
The method of claim 4, wherein

The light source unit,

A light source disposed behind the edge of the partially transparent PDLC and provided in one direction to form a plurality of LED elements and configured to emit a backlight by a light source driving voltage applied thereto; And

And a light dissipation member disposed to be in close contact with the light source to disperse the backlight of the light source to emit a uniform amount of light as a whole.
Rotating reel display device;

A display panel provided in front of the rotating reel display device to output an image image;

A liquid crystal having a transmittance controlled between the display panel and the rotating reel display device according to a driving voltage applied thereto;

First and second ITO layers disposed on the front side and the rear side of the liquid crystal, respectively, alternately overlapping and overlapping a specific region of the liquid crystal to selectively control the partial transparency, and selectively applying a driving voltage to the specific region of the liquid crystal;

A light source disposed behind the edge of the liquid crystal and extending in one direction to constitute a plurality of LED elements and emitting a backlight by a light source driving voltage applied thereto; And

And a light dissipation member disposed to be in close contact with the light source to disperse the backlight of the light source to emit a uniform amount of light as a whole.
The method of claim 7, wherein

An ITO layer of one of the first ITO layer and the second ITO layer has a width equal to a width of a specific region of the liquid crystal and is mounted on one surface of the liquid crystal in a form extending in the vertical direction;

The other ITO layer has a length equal to the length of a specific region of the liquid crystal and is partially transparent display device, characterized in that mounted on the other surface of the liquid crystal in a form extending in the horizontal direction.