KR101089378B1 - Display Device and Method for Controlling the Same - Google Patents

Abstract

The present invention provides a display apparatus for representing a dynamic image on a front surface, comprising: a backlight unit having a plurality of light emitting parts divided into parts for representing the dynamic image; And a control unit controlling the blinking of the light emitting units so that the lighted ones of the light emitting units change with time, thereby changing a light emitting portion of the front surface of the display apparatus according to time to implement a dynamic image. Disclosed is a display device.

According to the present invention, the backlight unit includes a plurality of light emitting units, and at least one light emitting unit emitted by the control unit among the light emitting units is changed over time so that a dynamic image is realized on the front surface of the display device or a stationary form is provided. By changing the light emitting area of the image sheet provided with images such as pictures and photographs over time, it is possible to express moving images on the front of the display device, thereby improving aesthetics and improving visual concentration and for dynamic image realization. The cost for implementing the display device can be reduced.

Display device, image sheet, backlight unit, mirror sheet, dynamic image

Description

Display device and method for controlling the same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device and a method of controlling the same, which can express live images by changing a light emitting area of an image sheet provided with a still image over time.

In general, the display device is operated by illuminating an image sheet on which a stationary image is drawn from the rear to display an image of a stationary form as it is, or by sequentially illuminating the image sheet partly to attract human attention.

In order to display dynamic images, it is common to use an image device such as an LCD or a PDP.

Referring to FIG. 1, a conventional display apparatus using an image sheet includes an image sheet 10, a backlight unit 20 that illuminates the image sheet 10, and a protection sheet 30 that protects the image sheet. It is configured by.

The image sheet 10 is provided with an image 11 to be displayed through the display device and is made of a material capable of transmitting light. The backlight unit 20 illuminates the entire image of the image sheet 10 at the same time so that the display device always displays the same image, that is, a still image, regardless of the passage of time.

The backlight unit 20 may include a light source 21 and a light guide plate 22 that converts the light emitted from the light source 21 into a surface light source shape and irradiates the image sheet toward the image sheet. The light guide plate 22 may be provided behind the light guide plate 22. However, the thickness of the backlight unit 20 is provided on the side of the light guide plate 22 or embedded in the light guide plate 22 so as to make the thickness of the backlight unit 20 emit light toward the inside of the light guide plate.

The light guide plate 22 illuminates the image sheet 10 in the form of a surface light source by scattering and / or diffusing light incident from the light source 21.

Accordingly, as the image sheet 10 emits light, an image included in the image sheet 10 is displayed on the display apparatus. The above-described conventional display apparatus is applied for various advertisements.

However, the above-described conventional display device is extremely monotonous, and thus it is difficult to attract attention, and display devices such as LCDs and PDPs that implement dynamic images are excessively expensive.

The light emitting area of the image sheet may be changed by dividing the backlight unit into a plurality of light emitting parts, but this may merely change the light emitting area to change an image displayed on the display device. Since the image is merely displayed at a different position, the present inventors can illuminate an image sheet provided with the original image of a stationary form to realize a more lively image, that is, a dynamic image or a live image that appears to be moving like an animation. Display device was developed.

The present invention is to solve the problem of the display device using the conventional image sheet described above, it is possible to display a live image, for example a moving image (dynamic image) by changing the light emitting portion of the front surface of the display device It is an object to provide a display device.

Another object of the present invention is to divide the light emitting portions constituting the backlight unit into a plurality of light emitting layers and to arrange at least one light emitting portion in the plurality of light emitting layers, thereby minimizing or preventing dark bands caused by portions occupied by the light source, and having dynamic shapes of complex shapes. It is to provide a display device having a structure that can implement an image.

It is still another object of the present invention to provide a display device in which only a portion of the front surface of a display device corresponding to a light emitting unit is displayed brightly so that a clear dynamic image can be expressed.

In order to achieve the above object, the present invention provides a display device for representing a dynamic image on the front surface, comprising: an image sheet formed on the front surface and provided with a stationary original image; A plurality of light emitting parts disposed at the rear of the image sheet and having at least one light emitting part disposed on a plurality of light emitting layers stacked on each other to separate the original image into a plurality of partial images and to illuminate the partial images, respectively; The light emitting layer positioned in front of the light emitting layers is formed by removing a portion overlapping with the partial image illuminated by the light emitting portion of the light emitting layer located at the rear thereof, and the edge includes a light-shielded opening, and enters the inside of the light emitting portion. A backlight unit including a light guiding member for emitting the light of the light source forward; And a control unit which controls a plurality of light emitting units of the backlight unit to change a blinking time.

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The light source includes a light emitting diode (LED), and the edge of the light guide member is preferably shielded.

It may be configured to further include an anti-reflective sheet provided in front of the backlight unit.

The backlight unit may be selectively turned on according to the brightness or time of the surrounding environment.

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According to another aspect of the present invention, there is provided a display device comprising: at least one of a plurality of light emitting layers stacked to separately illuminate the original image provided at a rear of an image sheet provided with a predetermined still original image into a plurality of partial images. The light emitting layer positioned in front of the plurality of light emitting layers stacked with a plurality of light emitting parts disposed therein is formed by removing a portion overlapping with the partial image illuminated by the light emitting part of the light emitting layer located at the rear, and the edge is shielded. A control method of a display apparatus including a plurality of openings and changing the illumination through a backlight unit including a light guiding member that forwards the light of a light source incident into the light emitting part forward. At least one light emitting unit of the light emitting units of the backlight unit. Illuminating at least one partial image of the plurality of partial images of the image sheet; And (b) changing a blinking of the light emitting units according to time to change a combination of light emitting regions illuminated and illuminated by the backlight unit among the plurality of partial images according to time. To provide.

The display device according to the present invention has the following effects.

First, according to the present invention, by dividing the backlight unit into a plurality of light emitting parts capable of expressing the dynamic image and controlling the blinking of the light emitting parts, the dynamic image can be displayed on the front of the display device, thereby providing visual focusing effect, interest, and discrimination. And it can improve the advertising functionality.

Secondly, according to the present invention, the backlight unit is divided into a plurality of light emitting layers and at least one light emitting unit is disposed in each light emitting layer, so that a dynamic image having a complicated shape can be expressed as compared to the case where the backlight unit is divided into only a second plane. For example, the shadow zone can be removed or minimized according to the arrangement of the light source.

Third, according to the present invention, an image is displayed on the display device only when the backlight unit is powered, and when the backlight unit is turned off, the image is switched to a mirror, thereby improving design and practicality, and being illuminated by the backlight unit to emit light. Since only the light emitting area of the image sheet is displayed on the display device, the sharpness of the image change over time is improved.

Fourth, according to the present invention, it is possible to apply a low-power high-brightness LED as a light source, so the power consumption is low, it is possible to implement a variety of color and color changes according to the color of the LED.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention in which the object of the present invention can be specifically realized will be described with reference to the accompanying drawings. In describing the present embodiment, the same name and the same reference numerals are used for the same configuration and additional description thereof will be omitted below.

2 to 6 are views showing one embodiment of a display device according to the present invention, Figure 2 is an exploded perspective view schematically showing the configuration of a display device according to an embodiment of the present invention, Figures 3 to 5 is a view schematically showing a process in which the image displayed on the display device according to the present invention changes dynamically with time, and FIG. 6 is an exploded perspective view showing an embodiment of a backlight unit applied to the display device according to the present invention. to be.

The present invention relates to a display apparatus for illuminating an image sheet on which a predetermined still original image is displayed from the rear to implement a vivid image, for example, a moving image (dynamic image) according to a change in the light emitting area of the image sheet.

The display apparatus according to the present invention comprises a backlight unit having a plurality of light emitting units divided into each other and a control unit for controlling the backlight unit. Herein, the control unit may control the blinking of the light emitting units so that the lighted ones of the light emitting units change with time, thereby changing the light emitting portion of the front surface of the display apparatus according to time, that is, the image moving on the front of the display. Dynamic images can be displayed.

First, referring to FIG. 2, an embodiment of a display apparatus according to the present invention includes an image sheet 100, a backlight unit 200, and a control unit 250 for controlling the backlight unit 200. . The present embodiment is a display device that represents a dynamic image by illuminating an image sheet on which a predetermined original image is printed with a backlight unit.

 The image sheet 100 includes a predetermined still original image 110. When the emission area of the image sheet 100 changes with time, a portion that is brightly displayed in front of the display apparatus every frame is displayed. The display device according to the present invention requires an image sheet on which a picture or a picture capable of expressing a lively image is displayed as the original image 110, and a lively image is realized based on the original image. The configuration of the backlight unit 200 to change the light emitting area of the image sheet 100 also has its characteristics.

The original image 110 may further include symbols or characters 121 to 124, and the image sheet 100 may be formed of a material that is capable of light transmission in whole or in part, and may not require light transmission. The light shielding material may be coated or a light blocking film may be provided.

In addition, the backlight unit 200 is provided at the rear of the image sheet 100 to illuminate the image sheet 100. There is no limitation on the type of light source of the backlight unit 200 and there is no limitation on the structure thereof. It is required that the image sheet 100 is divided into a plurality of partial images to be illuminated.

The operation of the backlight unit 200 is controlled by the control unit 250, which is controlled by the backlight unit 200 among the plurality of partial images 111, 112a, 112b and 113. The combination of the light emitting regions that are illuminated and emits light changes over time.

3 to 5 are views illustrating an image displayed by the display apparatus every frame. Referring to FIG. 3 to FIG. 5, FIG. 3 is a partial image showing a face in a normal state. 4 is a partial image 111 showing a normal face wearing a lampshade, a mouth-tailed part image 112b, and an eye-tailed part image 112a are light emitting regions, and FIG. 5 is a partial image of FIG. The partial image 113 of the face background becomes a light emitting area and the entire original image 110 is emitted. Of course, in FIG. 5, the entire image sheet may be illuminated and emit light.

In the present embodiment, the backlight unit 200 includes a plurality of light emitting parts 211, 212, 221, 231, and 232 corresponding to the plurality of partial images 111, 112a, 112b, and 113, respectively. In this case, the control unit 250 controls the backlight unit 200 such that the combination of the light emitting units 211, 212, 221, 231, and 232 which are blinking changes with time.

For example, the combination of the flashing parts blinking every frame of a predetermined period of time is changed, the light emitting area of the image sheet is also changed according to this change, and thus a lively image based on the original image 110 Can be implemented by the display device according to the present invention.

As an example of the original image 110, in the present embodiment, a face image of a person in the form of a picture or a picture is illustrated. As time passes, the face image gradually changes to a smiling face, that is, a dynamic face as if the face is moving. Implemented as an image.

That is, as shown in FIG. 3, the face and the tail of the leaves are changed from the normal face to the smiley face with the long tail. The reason for this is that in the frame of FIG. 3, the partial image of the eye tail and the mouth tail are not illuminated by the backlight unit 200 so that other portions are relatively clearly identified.

As described above, the display device according to the present invention divides the image sheet 100 and the image sheet, in particular, the original image 110 having the original image 110 capable of realizing a vivid image into a plurality of partial images. The backlight unit 200 capable of individual illumination is its technical feature.

Characters 121 to 124 may be further provided on the image sheet. When the image sheet is for advertisement, a name of a company or a product may be provided on the image sheet together with the original image 110. Each character constituting the light may be sequentially emitted or all of the letters may be simultaneously emitted.

To this end, the backlight units 200 are provided with light emitting units 212, 213a, 213b, 214a, 214b, 215a, and 215b corresponding to the letters constituting the name.

Here, the light emitting parts 211, 212, 221, 231, and 232 may be partitioned with each other so that the light flows in and out of the other light emitting parts to be blocked.

In the present embodiment, the backlight unit 200 includes a plurality of light emitting layers 210, 220, and 230 stacked on each other, and each of the plurality of light emitting layers 210, 220, and 230 is at least one. It has a light emitting part.

In other words, the light emitting portions 211, 212, 221, 231, and 232 correspond to the plurality of partial images as described above, respectively; The control unit 250 controls the backlight unit 200 to change the blinking of the light emitting units with time, so that the light emitting area of the image sheet 100 changes every frame. A lively image can be realized based on the original image 110.

Here, when the plurality of light emitting parts 211 and 212 are provided in one light emitting layer 210, the light emitting parts 211 and 212 of the one light emitting layer are partitioned to block light. Of course, the boundary between adjacently stacked light emitting layers, for example, between the light emitting layers 210 and 220 or between the light emitting layers 220 and 230 may also be configured to block light.

The light emitting layer (hereinafter, referred to as a front light emitting layer) located in front of the light emitting layers may include an opening 210a at a predetermined portion so that light emitted from the light emitting portion of the light emitting layer (rear light emitting layer) located at the rear may independently light a partial image corresponding thereto. 220a, 220b, 220c, and 220d.

In more detail, the openings 210a, 220a, 220b, 220c, and 220d are formed by removing an overlapping portion of the front light emitting layer overlapping the partial image illuminated by the light emitting unit of the rear light emitting layer, and the opening 210a. , 220a, 220b, 220c, 220d) are wall-shielded edge walls.

That is, the light blocking material is disposed on the edge wall of the openings 210a, 220a, 220b, 220c and 220d so that light does not flow into the light emitting units provided in the front emission layer through the openings 210a, 220a, 220b, 220c and 220d. Shading is carried out in various ways, such as coating or attaching shading tape.

The light emitting parts may include at least one light source 211a, 212a, 213a, 214a, 215a, 221a, 231a, and 232a, respectively, and light guide members 211b, 212b, 213b, and 214b which emit light emitted from the light source toward the image sheet. , 215b, 221b, 231b, and 232b. The light guide members 211b, 212b, 213b, 214b, 215b, 221b, 231b, and 232b are light sources incident from the light sources 211a, 212a, 213a, 214a, 215a, 221a, 231a, and 232a in the form of surface light sources. Since the light exits toward the image sheet 100, the brightness of the light may be uniform. Of course, the light of the light source may directly reach the image sheet 100 without applying the light guide members 211b, 212b, 213b, 214b, 215b, 221b, 231b, and 232b. There is a problem that must be large.

Light incident from the light sources 211a, 212a, 213a, 214a, 215a, 221a, 231a, and 232a into the light guide members 211b, 212b, 213b, 214b, 215b, 221b, 231b, and 232b is scattered and diffused. The surface of the light guide members 211b, 212b, 213b, 214b, 215b, 221b, 231b, and 232b is evenly emitted through the surface of the light guide members 211b, 212b, 213b, 214b, 215b, and 232b, and this principle is applied to a backlight unit (BLU) of an LCD (liquid crystal display). Detailed description thereof will be omitted.

The light source 211a, 212a, 213a, 214a, 215a, 221a, 231a, 232a is not limited as a kind of light emitting diode (LED) of low power, high brightness can be applied, the light source (211a, 212a, 213a, 214a) , 215a, 221a, 231a, and 232a are provided on the side of the light guide members 211b, 212b, 213b, 214b, 215b, 221b, 231b, and 232b, or the light guide members 211b, 212b, 213b, 214b, 215b, and 221b. And 231b and 232b are embedded in the light guide member to emit light into the light guide member.

Referring to FIG. 6, as an embodiment of the present invention, the image sheet 100 is provided with an original image 110 having a face shape, and divides the original image into partial images of approximately three regions to impart vitality. An example of the backlight unit will be described.

The backlight unit 200 includes a first light emitting layer 210 provided at the foremost and a second light emitting layer 220 and a third light emitting layer 230 which are sequentially stacked behind the first light emitting layer.

In the present embodiment, the first light emitting layer 210, the first light emitting unit 210 for illuminating the rest of the background except for the face and the shade and a plurality of characters for illuminating a plurality of characters (121 ~ 124), respectively It includes a light emitting portion.

Next, the second light emitting layer 220 is a partial image (not shown) of the rest of the face and the lampshade except for both the mouth tail 112b (see FIG. 4) and the eyes tail 112a (see FIG. 4). And a second light emitting unit 221 for illuminating the light emitting layer, and the third light emitting layer 230 may include a third light emitting unit 231 and a fourth light emitting unit for illuminating both the eye tails 112a and the mouth tails 112b, respectively. 232).

In addition, the light of the second light emitting part 221 may reach the remaining part of the face and the partial image 111 of the lampshade except for the two tails 112b and the two tails 112a in the first light emitting layer 210. The first opening 210a corresponding thereto is formed.

The dotted line displayed around the first opening 210a is for indicating a main portion illuminated by the first light emitting unit 211. In fact, the dotted line may not be displayed.

A light shielding tape (not shown) is attached to an edge of the first opening 210a so that light emitted from at least one first light source 211a of the first light emitting unit 211 may be applied to the first light guide member 211b. The light is blocked so as not to penetrate and flow into the first opening 210a.

Each of the character light emitters 212 includes at least one light source 212a and a light guide member 212b, and has a side surface adjacent to the light source 212a among the edges of the light guide members 212b to shield each other. The remaining edges are shaded. To this end, the light guiding members 212b of each of the character light emitting units 212 are manufactured separately from the first light guiding member 212b and then shielded, and then assembled to the first light emitting layer 210.

Next, the second light emitting layer 220 has second openings 220a and 220b corresponding to the both eye tail partial images 112a and third openings 220c and 220d corresponding to the both mouth tail partial images 112b. Is formed, and the second light emitting part 221 has at least one second light source 221a for illuminating the partial image 111 of the face and the lamp shade and a second light guiding member that evenly emits light from the light source. 221b.

The second light guide member 221b may be inserted into and mounted in a groove formed in the second light emitting layer 220. In this case, the remaining edges of the second light guide member 221b except for the side of the second light guide member 221b which contact the light source may be shielded. It is desirable to be treated.

The third light emitting layer 230 is provided with a third light emitting unit 231 for illuminating the partial eyes tail image 112a and a fourth light emitting unit 232 for illuminating the partial mouth tail images 112b. The third light emitting unit 231 has at least one third light source 231a and a third light guide member 231b which emits light from the third light source toward the partial eyes 112a.

Next, the fourth light emitting unit 232 has at least one fourth light source 232a and a fourth light guiding member 232b which emits light of the fourth light source toward both of the mouth-tailed part images 112b.

The third light guiding member 231b is located at the rear of the second opening 220a and the fourth light guiding member 232b is located at the rear of the third opening 220b.

An example of the backlight unit 200 configured as described above will be described with reference to a process controlled by the control unit 250.

First, the control unit 250 cuts off the power supply to the first light emitting layer 210 and the third light emitting layer 230 and at the same time supplies power to the second light emitting portion 221 so that both eyes and mouth tail Except for the face and lampshade.

After a predetermined time elapses, the control unit 250 simultaneously or sequentially supplies power to the third light emitting unit 231 and the fourth light emitting unit 232 while maintaining the operation of the second light emitting unit 221. Lights up both eyes and the tail of the mouth.

Finally, when the control unit 250 supplies power to the first light emitting unit 211 while maintaining the power supply to the second light emitting unit 221 to the fourth light emitting unit 232, The partial image of the surrounding background is illuminated by the first light emitter 211 so that the entire original image is illuminated.

Accordingly, the display device may implement a lively image that changes from a normal facial expression to a smiling facial expression.

On the other hand, at least one of the light emitting units may be configured to include a plurality of light sources of different colors, thereby implementing a change in color. For example, a variety of colors can be realized with red, green, and blue LEDs, as well as color changes over time.

In addition to the above configuration, the display apparatus according to the present invention transmits the light forward when the backlight unit 200 is turned on, and blocks the rear of the backlight unit 200 so that the rear side thereof is not visible or mirrored when the backlight unit 200 is turned off. It may also be configured to further include a mirror sheet or anti-reflective sheet 300 to act.

The mirror sheet 300 is provided in front of the image sheet 100, and when at least some of the light emitting units are operated, the mirror sheet 300 transmits the light passing through the image sheet to the front. Only the partial image corresponding to the specific light emitting area is displayed on the screen.

The mirror sheet 300 may be composed of a half mirror or an anti-reflective sheet (film), and the material or configuration of such a half mirror or the anti-reflective sheet (film) is well known, and thus detailed description thereof will be omitted. However, when applied to the display device according to the present invention, the effect may be more remarkable than that applied to other fields.

That is, since the mirror sheet 300 does not expose the remaining portion of the image sheet 100 except for the light emitting region, the mirror sheet 300 does not expose the screen on the screen of the display device, thereby making it possible to more reliably change the image. .

A protective sheet 400 is provided in front of the mirror sheet 300 to protect the front surface of the display device. Although not shown, a diffusion film may be provided behind the image sheet. In addition, the above-described components are accommodated and protected in the case 500 forming the exterior of the display device.

Next, another embodiment of the display device according to the present invention will be described with reference to FIGS. 7 and 8.

The present embodiment is a display device that implements a dynamic image without using an image sheet, and includes a backlight unit 600 having a plurality of light emitting units and a control unit (not shown) for controlling the backlight unit.

Each of the light emitting parts includes light guide members 611, 612, 621, 622, and 623 which face outwardly the light of the light sources 611b, 612b, 621b, 622b, and 623b that are incident therein. In the embodiment, a display device for representing a dynamic image in which a ball rolls is described as an example.

The backlight unit 600 includes a plurality of light emitting layers 610 and 620, and at least one light emitting unit is disposed in each of the light emitting layers 610 and 620. Each of the light emitting parts includes light guide members 611, 612, 621, 622, and 623, and a plurality of light guide members are disposed at a predetermined position to enable dynamic image representation.

The light guide members 611, 612, 621, 622, and 623 are mounted in openings formed in the base plate of each light emitting layer. Here, the base plate has a substantially rectangular shape and forms a base surface of each light emitting layer and supports the light guide members 611, 612, 621, 622, and 623.

In the present exemplary embodiment, the first light emitting layer 610 of the backlight unit includes two light guiding members 611 and 612 having a circular shape, and a second light emitting layer stacked behind the first light emitting layer 610. 620 is provided with three light guide members 621, 622, and 623 in a circular shape.

Two circular opening holes 611a and 612a corresponding to the two light guiding members 611 and 612 are formed in the base plate of the first light emitting layer 610, and the edges of the opening holes 611a and 612a are respectively formed. Light sources 611b and 612b are disposed.

Accordingly, when the light guide members 611 and 612 are inserted into the opening holes 611a and 612a, respectively, the light emitted from the light sources 611b and 612b is incident into the light guide members 611 and 612. After exiting, it is emitted in the form of surface light source.

In addition, three circular opening holes 621a, 622a, and 623a corresponding to the three light guide members 621, 622, and 623 are formed in the base plate of the second light emitting layer 620, and the opening holes 621a. The light sources 621b, 622b, and 623b are disposed at the edges of the lines 622a and 623a, respectively.

Accordingly, when the light guide members 621, 622, and 623 are inserted into and mounted in the three opening holes 621 a, 622 a, and 623 a, the light emitted from the light sources 621 b, 622 b, and 623 b is transferred to the light guide member ( 621, 622, and 623 are incident into the interior and exit in the form of a surface light source forward.

For convenience of description, the light guiding member disposed in the first light emitting layer 610 is referred to as the first light guiding member 611 and the second light guiding member 612 in order from the left, and the light guiding member disposed in the second light emitting layer 620. The members are referred to as the third light guide member 621, the fourth light guide member 622, and the fifth light guide member 623 in order from the left.

The light sources provided in the first light emitting layer 610 to illuminate the first light guiding member 611 and the second light guiding member 612, respectively, are called first light source 611b and second light source 612b. The light source provided in the second light emitting layer 620 so as to illuminate the third light guiding member 621, the fourth light guiding member 622, and the fifth light guiding member 623, respectively, is sequentially turned on by the third light source 621 b. , Fourth light source 622b, and fifth light source 623b.

Meanwhile, a support plate 630 may be stacked behind the second light emitting layer 620, and the third light guide member 621, the fourth light guide member 622, and the fifth light guide may be stacked on the support plate 630. Rear light sources 631 to 636 for illuminating the member 623 from the rear may be provided.

The rear light sources are sequentially disposed from the left to the first rear light source 631, the second rear light source 632, the third rear light source 633, the fourth rear light source 634, the fifth rear light source 635, and the sixth. This is called the rear light source 636.

Hereinafter, an operation process of the display apparatus according to the present embodiment, which represents a dynamic image in which a ball rolls, will be described with reference to FIG. 8.

First, when power is supplied to the third light source 621b, the first rear light source 631, and the second rear light source 632 by the control unit, the third light guide member 621 emits light and a circular ball is displayed. . When the first light source 611b and the third rear light source 633 are turned on at the same time or at a predetermined time interval after the third light source 621b and the first rear light source 631 are turned off, the first light guide member 611 is turned on. The circular ball moved a certain distance to the right while emitting light is represented.

Next, when the fourth light source 622b and the fourth rear light source 634 are turned on after the first light source 611b and the second rear light source 632 are turned off, the fourth light guiding member 622 on the screen of the display device. The part corresponding to) emits light roundly.

Thereafter, when the fourth light source 622b and the third rear light source 633 are turned off and the second light source 612b and the fifth rear light source 635 are turned on, the second light guiding member 612 is rounded. Light emission. Finally, when the second light source 612b and the fourth rear light source 634 are turned off and the fifth light source 623b and the sixth rear light source 636 are turned on, the fifth light guiding member 623 emits roundly. do.

Through the above-described process, it is possible to represent a dynamic image in which a circular ball gradually moves from left to right, and the present invention divides the light emitting units of the backlight unit to express the dynamic image as described in the above-described embodiments. It is characterized in that the arrangement. The antireflective sheet 300 or the half mirror sheet is preferably disposed in front of the backlight unit, and an image sheet may be further included between the backlight unit and the antireflective sheet.

Having looked at the preferred embodiment according to the present invention as described above, in addition to the embodiment described above, the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope of the present invention It is obvious to them.

Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

       1 is an exploded perspective view schematically showing a conventional display device using an image sheet.

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

3 to 5 are schematic views illustrating a process in which an image displayed on a display device according to the present invention is changed lively with time.

6 is an exploded perspective view showing an embodiment of a backlight unit applied to the display device according to the present invention.

7 is an exploded perspective view schematically illustrating a configuration of a display apparatus according to another embodiment of the present invention.

FIG. 8 is a front view of the backlight unit for the display device of FIG. 7.

DESCRIPTION OF THE RELATED ART [0002]

100: Image Sheet 110: Original Image

200, 600: backlight unit 210, 220, 230, 610, 620, 630: light emitting layer

211, 212, 221, 231, 232: light emitting unit

211a, 212a, 213a, 214a, 215a, 221a, 231a, 232a: light source

211b, 212b, 213b, 214b, 215b, 221b, 231b, 232b: light guide member

300: mirror sheet 400: protective sheet

500: case

611b, 612b, 621b, 622b, 623b, 631, 632, 633, 634, 635, 636: light source

611, 612, 621, 622, 623: light guide member

Claims (11)

An image sheet formed on the front surface and having a stationary original image; A plurality of light emitting parts disposed at the rear of the image sheet and having at least one light emitting part disposed on a plurality of light emitting layers stacked on each other to separate the original image into a plurality of partial images and to illuminate the partial images, respectively; The light emitting layer positioned in front of the light emitting layers is formed by removing a portion overlapping with the partial image illuminated by the light emitting portion of the light emitting layer located at the rear thereof, and the edge includes a light-shielded opening, and enters the inside of the light emitting portion. A backlight unit including a light guiding member for emitting the light of the light source forward; And a control unit which controls a plurality of light emitting units of the backlight unit to change a blinking time. delete delete delete delete delete The display apparatus of claim 1, wherein the light source comprises a light emitting diode (LED), and the edge of the light guide member is shielded from light. The method of claim 1, And a non-reflective sheet provided in front of the backlight unit. The method of claim 1, The backlight unit is selectively turned on according to the brightness or time of the surrounding environment. delete Stacked with a plurality of light emitting parts disposed at least one of the plurality of light emitting layers stacked to illuminate the original image provided in the rear of the image sheet provided with a predetermined still original image into a plurality of partial images, respectively; The light emitting layer positioned in front of the plurality of light emitting layers is formed by removing a portion overlapping with the partial image illuminated by the light emitting portion of the light emitting layer located in the rear, and the edge includes a light-shielded opening, and the inside of the light emitting portion A control method of a display apparatus for displaying a live image on a screen by changing illumination through a backlight unit including a light guiding member that emits light of a light source incident to the front side, Illuminating at least one partial image of the plurality of partial images of the image sheet with at least one light emitting portion of the light emitting portions of the backlight unit; And And (b) changing the blinking of the light emitting units according to time to change a combination of light emitting regions illuminated and illuminated by the backlight unit among the plurality of partial images according to time.

Images