KR100994191B1 - Method for supplying power of transparent signboard - Google Patents

Abstract

The present invention relates to a transparent display board and a method for supplying power thereof. The transparent display board according to an embodiment of the present invention includes a first power supply unit and a second power supply unit to which power is supplied at different levels, respectively, and is spaced apart from each other in one region of the substrate. A separate power supply is selectively supplied to each of the plurality of unit power supply units arranged. Thereby, the drive voltage of a transparent display board can be reduced.

Electronic board, transparent electrode, low power

Description

Power supply method of transparent signboard {Method for supplying power of transparent signboard}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transparent display board, and more particularly, to a transparent display board used for lighting, indoor / outdoor billboards, and the like.

Generally, a light emitting device used outdoors includes a neon, a cold cathode lamp (CCL), and an LED using a light emitting diode (LED). In addition, the light emitting device used indoors include an external electrode fluorescent lamp (EEFL), a cold cathode fluorescent lamp (CCFL), a light emitting diode display board, and the like.

Neon or cold cathode discharge tube has a high power consumption, high power consumption, risk of electric shock and fire, and short life. In addition, EEFL or CCFL is difficult to use outdoors in that it uses a high frequency has the disadvantage of low illumination and short life. In the case of an LED board using the LED, the back surface of the surface emitting light by the treatment of the electric wire, black film treatment or the like of the back is blocked by the cover, there is a problem that emits light in only one direction.

In order to solve this problem, a transparent electronic display board has been proposed. The transparent display board uses a thin film-type transparent electrode that is transparent to visible light and electrically conductive. The transparent electronic display board made of a transparent electrode has the advantage of being lightweight, detachable and transparent. However, when the conventional power supply method is used for such a transparent display board, there is a problem in that voltage consumption is high, and thus the lifespan of the display board is shortened.

The present invention proposes a transparent electronic display plate driven at a low voltage and a power supply method thereof.

That is, the present invention proposes a transparent display board and a power supply method for driving a low voltage by selectively supplying separate power to each of the plurality of divided power supply units.

More specifically, the transparent display board according to the aspect of the present invention is disposed in a spaced apart from each other in the substrate, a plurality of unit power supply unit having a first power supply unit and a second power supply unit, each of which is supplied with different levels of power; Each unit power supply unit includes a first conductive unit and a second conductive unit disposed with a specific circuit pattern. The first conductive unit is connected to the first power unit, the second conductive unit is connected to the second power unit, and the first conductive unit and the second conductive unit are It includes a transparent electrode spaced apart from each other, a light emitting device for connecting between the first conductive portion and the second conductive portion and a control unit for selectively supplying separate power to each of the plurality of unit power supply.

Here, the first power supply unit may be divided or united into one unit power unit. Furthermore, the controller may sequentially supply power to each of the plurality of unit power units, and may sequentially supply power to each of the plurality of unit power units using a frequency of 60 Hz or more.

On the other hand, the power supply method of the transparent display board according to another aspect of the present invention is disposed spaced apart from each other in one area of the substrate, each of the plurality of unit power supply unit having a first power supply unit and a second power supply to supply a different level of power Optionally supplying a separate power source.

As described above, according to an embodiment of the present invention, a transparent electronic display plate driven at a low voltage and a power supply method thereof are provided.

That is, as a separate power source is selectively supplied to the transparent display board, the light emitting device blinks, thereby lowering the driving voltage. In addition, when supplying separate powers in sequence so that it is difficult to distinguish with the naked eye, a user looking at a transparent electric display while simultaneously implementing low voltage may feel that the light emitting devices emit light at the same time.

Furthermore, the transparent electronic display board may be applied to various fields or products such as automobiles by driving the electronic display board at low voltage. In addition, since the size of the substrate is not limited, low voltage may be realized regardless of the size of the substrate.

Hereinafter, with reference to the accompanying drawings will be described embodiments of the present invention; In the following description of the present invention, if it is determined that detailed descriptions of related well-known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.

1 is a perspective view showing a transparent electronic display plate 1 according to an embodiment of the present invention.

Referring to FIG. 1, the transparent display board 1 includes a substrate 10, a unit power supply unit 20, a transparent electrode 30, a light emitting device 40, and a control unit 50. The first power supply unit 22 and the second power supply unit 24 are included.

The unit power supply units 20 are spaced apart from each other in one region of the substrate 10, and include a first power supply unit 22 and a second power supply unit 24 to which different levels of power are supplied. For example, the first power supply unit 22 may be a negative power supply, and the second power supply unit 24 may be a positive power source. Here, a plurality of unit power units are provided, and each of the plurality of unit power units 20 is selectively supplied with a separate power source. The unit power supply unit 20 will be described in detail later with reference to FIGS. 2 and 3.

The transparent electrode 30 includes a first conductive part 34 and a second conductive part 36 disposed with a specific circuit pattern for each unit power supply part 20. In this case, the first conductive part 34 is connected to the first power supply part 22 and the second conductive part is connected to the second power supply part 24. The first conductive part 34 and the second conductive part 36 are spaced apart from each other. The light emitting element 40 connects between the first conductive portion 34 and the second conductive portion 36.

The controller 50 selectively supplies separate power to each of the plurality of unit power units 20, and may sequentially supply power to each of the plurality of unit power units 20. In this case, by using a frequency of 60 Hz or more, it may appear that the light emitting devices 40 emit light at a time while lowering the driving voltage of the transparent display board 1.

Hereinafter, the structure of the transparent display board 1 of this invention is demonstrated concretely.

The substrate 10 is made of glass, transparent polymer or frit glass. Here, the substrate 10 may be made of a highly transparent inorganic substrate or a transparent polymer substrate to have flexibility.

The first conductive portion 34 and the second conductive portion 36 of the transparent electrode 30 may be formed of any one of a conductive polymer, indium tin oxide, indium zinc oxide, or carbon nanotube (CNT). For example, when the first conductive portion 34 and the second conductive portion 36 are made of carbon nanotubes or conductive polymers, flexibility is excellent. In addition, since the first conductive part 34, the second conductive part 36, and the non-conductive part 32 are integrally formed, the light emitting device 40 may be stably disposed, and the transparent light emitting plate 1 may be stained from the outside. Invisible and can be strong. Herein, the polymer forming the transparent electrode 30 has conductivity, and the non-conductive portion 32 is formed by deactivating the conductivity of the polymer.

On the other hand, the non-conductive part 32 of the transparent electrode 30 may be formed by dividing the non-conductive part 32 in a specific pattern so that the light emitting device 40 to be described later has a uniform brightness when emitting light. That is, the luminance of the light emitting device 40 may be set to be uniform as the width of the region divided by the non-conductive part 32 is varied. For example, the nonconductive part 32 is divided into specific patterns by varying the width of the divided regions according to at least one of the length of the substrate 10, the number of the light emitting devices 40, and an electrode connection method such as parallel or series. Can be formed.

The first conductive part 34 and the second conductive part 36 spaced apart from each other by a specific pattern are connected by the light emitting device 40. The light emitting device 40 may be a light emitting diode (LED), a laser diode, an organic EL, a liquid crystal device (LCD), a field emission device (FED), but all kinds of other light emitting devices. The light emitting element can be applied.

Referring to the case of the LED having two electrodes as an example of the light emitting device 40, one electrode of the LED is connected to the first conducting portion 34 disposed adjacent to one side of the non-conductive portion 32, the other of the LED An electrode may be connected to the second conductive portion 36 disposed adjacent to the other side of the non-conductive portion 32. Accordingly, the electrodes of the LED connect between the first conducting portion 34 and the second conducting portion 36, and the electronic signals are transmitted from the first conducting portion 34 and the second conducting portion 24, respectively. If supplied to the two conducting portions 36, the LED can emit light.

In this case, the electrodes of the light emitting device 40 may be attached or directly attached to the first conductive portion 34 and the second conductive portion 36 by a conductive adhesive. In general, the conductive adhesive may be one obtained by dispersing a metal such as silver and nickel and a conductive filler such as conductive carbon in an organic resin. In particular, the metal particles having a nano size can be sintered at a low temperature, thereby reducing the contact resistance between the particles, thereby stably connecting the first conductive part 34, the second conductive part 36, and the light emitting device 40.

On the other hand, the controller 50 sequentially supplies the power of the unit power supply unit 20. This is possible because the unit power supply units 20 are supplied with different levels of power, respectively. In this case, the controller 50 may supply power at a time interval that is difficult to distinguish easily with the naked eye when the power is supplied. Therefore, the user looking at the transparent display board 1 may feel as if the light emitting elements 40 emit light at the same time. For this purpose, a specific frequency, for example, a frequency of 60 Hz or more can be used. Accordingly, while lowering the driving voltage of the transparent display board 1, the light emitting devices may appear to emit light at once.

The transparent display board 1 according to an embodiment of the present invention may be applied to various fields or products by driving the display board at low voltage. Meanwhile, a detailed description of the transparent electronic display plate 1 applied to the automobile will be described later with reference to FIG. 5.

In addition, the transparent display board 1 according to the present invention is not limited to the size of the substrate 10. In general, in the case of a transparent display board which temporarily emits light, the larger the size, the higher the voltage consumption is. This is because, as the size of the transparent display board increases, the driving voltage increases as the number of light emitting devices used increases. However, the transparent display board 1 according to the present invention may divide the transparent display board 1 into a plurality of regions and then sequentially supply power. Therefore, a low voltage may be realized regardless of the size of the transparent display board 1.

The controller 50 may supply the power of the unit power supply unit 20 at preset time intervals. In this case, the preset time interval may be set to a short time within 1 second that is difficult to distinguish easily with the naked eye. On the other hand, in order to enjoy the visual effect, it can be set within 1.5 seconds to 4 seconds, which is a time for the user to feel stable, cozy, or comfortable, and moreover, it can be set within the range of 2 seconds to 4 seconds close to the human breathing cycle. Various other embodiments are possible.

Furthermore, the controller 50 may differentially supply the power of the unit power supply unit 20. That is, power can be supplied in order, for example, from the left to the right of the divided substrate 10 region. Or it can be powered randomly. Furthermore, power can also be differentially supplied in a preset order. For example, when the light emitting devices 40 are arranged in a circular shape, power of the unit power supply unit 20 may be differentially supplied such that a part of the light emitting devices 40 is partially replaced in a clockwise or counterclockwise direction. As a result, the effect of the video can be achieved.

In addition, the controller 50 may selectively supply power according to a preset mode. For example, in order to cut off the power supply, power may be selectively supplied according to a power saving mode such as a normal mode, a suspend mode, or a standby mode.

Furthermore, the brightness of the light emitting device 40 may be adjusted. For example, it can be controlled to brighten gradually at power up. At this time, the brightness of the light emitting device may be adjusted according to a constant repetition period. In addition, additional time-sensitive RTC circuits may be provided to selectively supply power. For example, the power supply can be differentiated by day and night. All of the above-described embodiments are possible because the power of the power supply unit 20 can be selectively controlled.

Meanwhile, according to a further aspect of the present invention, the transparent electronic display plate 1 may be provided between an auxiliary substrate (not shown) disposed to face the substrate 10 and disposed between the substrate 10 and the auxiliary substrate and cover the light emitting device 40. It may further include a filling layer (not shown) installed so as to. The auxiliary substrate is made of the same transparent material as the substrate 10 and serves to form a space between the substrate 10 and the substrate 10.

Furthermore, according to a further aspect of the present invention, a filling layer may be formed between the substrate 10 and the auxiliary substrate, which is disposed to cover the transparent electrode 30 and the light emitting element 40, thereby emitting light with the transparent electrode 30. The device 40 may be protected from an external environment such as moisture, and shock may be absorbed to protect the electronic component from external force.

In addition, the filling layer is made of a transparent material, and since the substrate 10 and the auxiliary substrate must be attached, it may be made of a polymer-based material having adhesiveness. Furthermore, it may be a liquid filler of PVB film, EVA film or resin. According to the present invention, a filling layer is formed between the substrate 10 and the auxiliary substrate, so that the electrode pattern and the light emitting device 40 can be stably protected from external impact.

2 and 3 are exemplary diagrams of the unit power units 20a and 20b of the transparent display boards 1a and 1b according to various embodiments of the present disclosure.

2 illustrates that the unit power source unit 20a is divided into N units, the first power source unit 22a is integrated into one, and the second power source unit 24a is divided into a plurality of units.

Referring to FIG. 2, the unit power supply unit 20a of the transparent display board 1a according to the exemplary embodiment of the present invention may include a first power supply unit 22a and a second power supply unit 24a which are spaced apart from each other in one region of the substrate 10. ), Each of which is divided into units in units of a plurality of substrates. In this case, the first power supply unit 22a may be integrated into one. That is, the unit power supply unit 20a includes a first power supply unit 22a formed at one end of the substrate 10 as shown in FIG. 2, and a second power supply unit 24a formed in units at one end opposite to the first power supply units 22a. It may include. In this case, the first power supply unit 22a may be a negative power supply, and the second power supply unit 24a divided by units may be a positive power source.

On the other hand, as the transparent power plate 1a is divided into a plurality of unit power units 20a, separate power is selectively supplied to each of the unit power units 20a. For example, as shown in FIG. 2, when N unit power units 20a are divided into N units, power may be sequentially supplied to each unit power unit. Furthermore, the power can be supplied at a time interval that is difficult to distinguish easily with the naked eye of the power supply. Therefore, people looking at the transparent display board 1a may feel as if the light emitting elements 40 emit light at the same time. For this purpose, a specific frequency, for example, a frequency of 60 Hz or more can be used, which lowers the driving voltage of the transparent display board 1 and has the effect of appearing to emit light at a time.

3 shows that the unit power supply unit 20b is divided into N units, the first power supply unit 22b is integrated into one, and the second power supply unit 24b is divided into a plurality of units.

Referring to FIG. 3, the unit power supply unit 20b of the transparent display board 1b according to the exemplary embodiment of the present invention may include a first power supply unit 22b and a second power supply unit 24b spaced apart from each other in one region of the substrate 10. ), Each of which is divided into units in units of a plurality of substrates. In this case, the first power supply unit 22b and the second power supply unit 24b may be divided into plural numbers. That is, the unit power supply unit 20b includes a first power supply unit 22b formed in units at one end of the substrate 10 and a second power unit unit formed in units at one end thereof facing the first power units 22b as shown in FIG. 2. (24b). In this case, the first power supply unit 22b may be a negative power supply, and the second power supply unit 24b divided by units may be a positive power source.

On the other hand, as the transparent power plate 1b is divided into a plurality of unit power units 20b, a separate power is selectively supplied to each of the unit power units 20b. For example, when the unit power unit 20b is divided into N units as illustrated in FIG. 2, power may be sequentially supplied to each unit power unit. Furthermore, the power can be supplied at a time interval that is difficult to distinguish easily with the naked eye of the power supply. Therefore, people looking at the transparent display board 1b may feel as if the light emitting devices 40 emit light at the same time. For this purpose, a specific frequency, for example, a frequency of 60 Hz or more can be used, which lowers the driving voltage of the transparent display board 1 and has the effect of appearing to emit light at a time.

4 is an embodiment of pattern division of a transparent electronic display board according to an embodiment of the present invention.

Referring to FIG. 4, the non-conductive part 32 may be formed in a specific pattern so that the light emitting device 40 may have uniform luminance when the light emitting device 40 emits light. To this end, the non-conductive part 32 may be divided into a specific pattern according to at least one of the length of the substrate 10, the number of light emitting devices, or an electrode connection method. For example, the light emitting devices connected in series may be classified according to a predetermined group to form a pattern. Alternatively, the pattern may be formed by dividing the number of light emitting devices into a predetermined group or one by one. However, this is only one embodiment of pattern formation and various other embodiments are possible.

5 is an exemplary view showing a transparent electronic display plate of a vehicle 60 according to an embodiment of the present invention.

Referring to FIG. 5, the transparent electronic display panel 1 of the present invention may be applied to an automobile, for example, may be installed at the rear of the automobile 60. In particular, the transparent display board 1 is installed at the position inside the vehicle, that is, the rear vehicle, of the rear windshield of the automobile 60. This is for the purpose of the transparent display board 1 to inform the car behind the direction of the car 60 or the current situation inside the car. For example, a stop light, a U-turn, a direction indication, a brake operation state, and the like may be displayed on the transparent display board 1.

In the case of automobiles, a voltage of 12V or 24V is required to drive an electronic sign, but a general transparent electronic sign requires a high voltage of 30V or more. Therefore, it is not easy to apply a general transparent electronic signboard to a car. However, the transparent display board 1 according to the exemplary embodiment of the present invention may supply power sequentially to disperse the driving voltage. For example, since the transparent display board 1 can be driven sequentially with a voltage of 10 V or less, its application is easy.

At this time, the user looking at the transparent display board as the power is supplied at a predetermined time interval, particularly at a time interval that is difficult to distinguish with the naked eye, may feel as if the contents of the transparent display board 1 are flickering at once.

In one embodiment, when the driver of the vehicle 60 intends to turn the driving direction of the vehicle to the right, the driver outputs a right turn signal to the direction indicator by operating the direction indicating operation lever. At this time, the driver operates the direction indicating operation lever and informs the right turn to the transparent electronic display board 1 on the glass window of the front or rear side of the vehicle 60. Here, the transparent display board 1 according to the embodiment of the present invention is supplied with selective power for each divided power unit as the power unit is divided into a plurality. In particular, when power is supplied to each power unit at a time interval that is difficult to distinguish with the naked eye, a user looking at it may be recognized that power is supplied at a moment.

Furthermore, according to an embodiment of the present invention, the transparent electronic display panel 1 used in the automobile 60 or the like is capable of driving at low voltage through the application of a sequential flashing circuit, so there is no limitation in the size thereof. That is, as the size of the general transparent LED increases, the driving voltage increases as the number of light emitting devices used increases. However, the transparent display board 1 according to the exemplary embodiment of the present invention may be less affected by the size of the transparent electronic display panel 1 by using the sequential flashing circuit.

In summary, the transparent display board according to the exemplary embodiment of the present invention may lower the driving voltage as a separate power source is selectively supplied to the transparent display board and the light emitting device is flickering. In addition, when supplying separate powers in sequence so that it is difficult to distinguish with the naked eye, a user looking at a transparent electric display while simultaneously implementing low voltage may feel that the light emitting devices emit light at the same time. Furthermore, the transparent electronic display board may be applied to various fields or products such as automobiles by driving the electronic display board at low voltage. In addition, since the size of the substrate is not limited, low voltage may be realized regardless of the size of the substrate.

The embodiments of the present invention have been described above. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

1 is a perspective view showing a transparent display board according to an embodiment of the present invention;

2 is an exemplary view of a unit power supply unit of a transparent display board according to an embodiment of the present invention;

3 is an exemplary view of a unit power supply unit of a transparent display board according to another embodiment of the present invention;

4 is an embodiment of pattern division of a transparent electronic display board according to an embodiment of the present invention;

5 is an exemplary view showing a transparent electronic sign of a vehicle according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 1 Transparent board 10

20: unit power supply unit 22: first power supply unit

24: second power supply unit 30: transparent electrode

32: non-conductive part 34: first conductive part

36: second conductive portion 40: light emitting element

50: control unit 60: car

Claims (11)

delete delete delete delete delete delete delete A plurality of unit power units including a first power unit and a second power unit which are spaced apart from each other and supplied with different levels of power in one region of the substrate, a first conductive unit receiving power from the first power unit for each unit power unit; A transparent electrode including a second conductive part spaced apart from the first conductive part and supplied with power from a second power supply part, a light emitting element connecting between the first conductive part and the second conductive part, and independent of each of the plurality of unit power supply parts A power supply method of a transparent display board comprising a control unit for supplying power by And the control unit controls to supply power sequentially to the adjacent unit power units at a frequency such that all of the unit power units appear to be emitted simultaneously with the naked eye. The method of claim 8, The control unit controls the power supply to the power supply to the unit power supply unit so as to be different from each other. The method of claim 8, The control unit is a power supply method for a transparent display board using a frequency of 60Hz or more when sequentially supplying power to each of the plurality of unit power supply. The method of claim 8, The control unit includes an RTC circuit, the power supply method of the transparent display board, characterized in that the selective supply control of the intensity of the power supplied to the unit power supply in time.

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