WO2019098721A1

WO2019098721A1 - System for actively blocking sunlight by using photoelectric effect and liquid crystal

Info

Publication number: WO2019098721A1
Application number: PCT/KR2018/014034
Authority: WO
Inventors: 조유진
Original assignee: 조유진
Priority date: 2017-11-17
Filing date: 2018-11-15
Publication date: 2019-05-23
Also published as: KR102013237B1; KR20190056608A

Abstract

The present application relates to a light blocking system. More specifically, the present application provides a light blocking system comprising: one or more light focusing portions for focusing light; photogeneration portions contacting the light focusing portions, respectively, each photogeneration portion comprising one or more light reflection preventing members, a first semiconductor layer contacting the light reflection preventing members so as to form an electric current on the basis of light that is focused by the light focusing portions and then transferred through the light reflection preventing members, a second semiconductor layer contacting the first semiconductor layer, a first photogeneration electrode arranged between the light reflection preventing members so as to contact the first semiconductor layer, and a second photogeneration electrode contacting the second semiconductor layer; a first electrode electrically connected to the first photogeneration electrode; a second electrode electrically connected to the second photogeneration electrode; and a transmittance changing layer arranged between the first electrode and the second electrode such that the transmittance thereof is changed by a power supply based on the electric current transferred from the first photogeneration electrode or the second photogeneration electrode.

Description

Active photovoltaic system using photoelectric effect and liquid crystal

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a solar light blocking system, and more particularly, to a light blocking system that actively blocks light without a user's predetermined control when light is applied.

An optical member such as a mirror or a window can transmit light or reflect light. In other words, a mirror has optical properties that reflect light, and a window can have optical properties that transmit light.

The optical members described above have been used in various fields depending on the optical properties of the optical members. For example, a window has been used in a building or various transportation means so that light can be transmitted through a building or various transportation means so that light can reach the interior of a building or various transportation means.

The optical properties of the optical members described above are generally kept constant. For example, the light transmittance of the window and the light reflectivity of the mirror are kept constant. An optical member in which such optical properties are kept constant has a limitation of optical properties that are difficult to use in various environments. Accordingly, there is a growing demand for optical members or optical systems whose optical properties can be changed from time to time.

An object of the present invention is to provide a light blocking system that is actively driven without a user's predetermined control.

Another object of the present invention is to provide a light shielding system which can easily change the light transmittance.

Another object of the present invention is to provide a light blocking system having different light transmissivity for each region.

The problems to be solved by the present application are not limited to the above-mentioned problems, and the matters not mentioned in the present specification can be clearly understood by those skilled in the art from the present specification and the accompanying drawings .

According to an aspect of the present invention, there is provided a light guiding plate comprising: at least one light focusing unit extending in one direction and allowing light to be focused in the one direction; At least one light reflection preventing member contacted with each of the light focusing parts and implemented in a manner similar to the optical characteristics of the light focusing part so as to reduce the half specification of the light transmitted from the light focusing part, A first semiconductor layer that is formed on the basis of light that is focused by the light focusing unit and is transmitted through the light reflection preventing member, a second semiconductor layer that is in contact with the first semiconductor layer, A photovoltaic portion including a first photovoltaic electrode disposed in contact with the first semiconductor layer and a second photovoltaic electrode in contact with the second semiconductor layer; A first electrode electrically connected to the first photovoltaic electrode; a second electrode electrically connected to the second photovoltaic electrode; and a second electrode disposed between the first electrode and the second electrode, And a transmittance changing layer including a liquid crystal material so that the transmittance is changed by a power supply electrode or a power source based on the current transmitted from the second photovoltaic electrode.

The solution of the problem of the present application is not limited to the above-mentioned solutions, and the solutions which are not mentioned are to be clearly understood by those skilled in the art to which the present invention belongs It will be possible.

According to the present invention, a light blocking system that is actively driven without a user's predetermined control can be provided.

According to the present invention, a light blocking system that can easily change the light transmittance can be provided.

According to the present invention, a light blocking system having different light transmissivity for each region can be provided.

The effects of the present application are not limited to the effects described above, and effects not mentioned may be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a view of a light blocking system according to a first embodiment of the present application.

2 is a view showing the configuration of a light blocking system according to an embodiment of the present application.

3 is a view showing a light generating unit and a light focusing unit provided in the light generating unit according to an embodiment of the present invention.

FIGS. 4 and 5 are views illustrating a light blocking system including a photovoltaic portion provided in a physical space of an environment in which light is blocked according to an embodiment of the present application.

6 is a view illustrating a photovoltaic portion for performing a photovoltaic operation according to an embodiment of the present application.

FIG. 7 is a diagram showing a transmittance changing unit for performing a transmittance changing operation according to an embodiment of the present application.

8 is a flowchart illustrating a light blocking method of a light blocking system according to an embodiment of the present application.

9 is a view showing a light blocking system according to a second embodiment of the present application.

10 is a diagram showing an electrical connection relationship of the transmittance changing unit according to an embodiment of the present application.

11 is a diagram showing an example of the operation of adjusting the degree of transmission of the transmissivity changing portion according to an embodiment of the present application.

12 is a view showing a light blocking system according to a third embodiment of the present application.

FIG. 13 is a perspective view showing a layered transmissivity-modifiable layer according to a third embodiment of the present application. FIG.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to be illustrative of the present invention and not to limit the scope of the invention. Should be interpreted to include modifications or variations that do not depart from the spirit of the invention.

Although the terms used in the present invention have been selected in consideration of the functions of the present invention, they are generally used in general terms. However, the present invention is not limited to the intention of the person skilled in the art to which the present invention belongs . However, if a specific term is defined as an arbitrary meaning, the meaning of the term will be described separately. Accordingly, the terms used herein should be interpreted based on the actual meaning of the term rather than on the name of the term, and on the content throughout the description.

The drawings attached hereto are intended to illustrate the present invention easily, and the shapes shown in the drawings may be exaggerated and displayed as necessary in order to facilitate understanding of the present invention, and thus the present invention is not limited to the drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of known configurations or functions related to the present invention will be omitted when it is determined that the gist of the present invention may be obscured.

Further, the light blocking system may further include a predetermined frame, and the light focusing unit may penetrate the frame in the one direction.

The light shielding part may be shielded by the predetermined frame, and the other end of the light focusing part passing through the frame may be exposed in the one direction.

The optical shutdown system according to claim 1, wherein one end of the light focusing unit is in contact with the light reflection preventing member of the photovoltaic unit and transmits light to the light reflection preventing member, and the other end of the light focusing unit receives light .

Also, the transmittance changing section may be provided with a light blocking system including at least two of the first electrodes, at least one of the second electrodes, and at least two of the transmittance changing layers.

The first electrode includes a 1-1 electrode and a 1-2 electrode, and the transmittance changing layer includes a first transmittance changing layer and a second transmittance changing layer, The second electrode is disposed between the first and second electrodes, the first transmission variation layer is disposed between the first electrode and the second electrode, and the first and second electrodes and the second And the second transmissivity modifying layer is disposed between the electrodes.

The first electrode for supplying power to each of the first electrodes is provided with a 1-1 wire and the 1-2 electrode is provided with a 1-2 wire, A light blocking system can be provided, which is grounded.

Further, the light blocking system may further include a controller for controlling the power supplied to the 1-1 and 1-2 electrodes, Wherein the first transmission modifying layer has a first transmittance and the second transmissivity modifying layer has a second transmittance when the transmission of the power through the first 1-2 wire is cut off, Wherein the first transmissivity and the second transmissivity are different from each other.

In addition, when the control unit causes power to be transmitted to the 1-1 electrode through the 1-1 wire and the transmission of power through the 1-2 wire is interrupted, And the liquid crystal material contained in the second transmissivity-changing layer has a second alignment state.

The light blocking system may further include a filling member disposed in the spaced space between the first electrodes, wherein the plurality of first electrodes are spaced apart from each other by a predetermined distance on the transmittance changing layer A light blocking system can be provided.

Also, it is preferable that a power line is provided for each of the plurality of first electrodes arranged on the transmittance changing layer, and the control unit controls the transmittance changing layer to have a transmittance of the plurality of first electrodes disposed on the transmittance changing layer Wherein the first and second electrodes disposed on the transmittance changing layer are controlled so as to change the power of the power supplied to the plurality of first electrodes disposed on the transmittance changing layer.

Relative terms such as " top, " " side, " and " bottom " herein may be used herein to describe the relationship of certain elements to other elements as illustrated in the drawings. Relative terms are intended to include different orientations of the device in addition to those depicted in the Figures. For example, in the figures the elements are turned over so that the elements depicted as being on the top surface of the other elements are oriented on the bottom surface of the other elements. Thus, by way of example, the term "upper" may include both "lower" and "upper" directions depending on the particular orientation of the figure. If the elements are oriented in different directions (rotated 90 degrees with respect to the other direction), the relative descriptions used herein can be interpreted accordingly.

Further, the outward direction may be a direction corresponding to the direction toward the " side " at the central axis, and the inner direction may be the direction corresponding to the direction from the " side "

Although the terms first, second, etc. are used herein to describe various elements, components, regions, layers and / or portions, these members, components, regions, layers and / It is obvious that no.

Hereinafter, a light blocking system 1 according to an embodiment of the present application will be described.

&Lt; Embodiment 1 >

1 is a view showing a light blocking system 1 according to a first embodiment of the present application.

Referring to FIG. 1, the light blocking system 1 according to the first embodiment of the present application can actively block the applied light. Specifically, the light blocking system 1 can block light transmitted through the system automatically without any control by a user when light is applied to the light blocking system 1.

Accordingly, the light blocking system 1 of the present application can have high ease of use. If the light blocking system 1 is a system operated by control by the user, the light blocking system 1 may not operate under the condition that light is applied to the system. On the other hand, when the light blocking system 1 is implemented to be actively operated without the user's control, the light blocking system 1 actively blocks light under the condition that the light is applied, .

Hereinafter, the structure of the light blocking system 1 will be described.

2 is a view showing the configuration of a light blocking system 1 according to an embodiment of the present application.

2, the light blocking system 1 according to an embodiment of the present invention includes a light transmittance changing unit 100, a light generating unit 200, a light focusing unit 300, a control unit 400, and wires W.

The transmittance changing unit 100 may change the transmittance of the applied light.

The photovoltaic unit 200 may be photovoltaic.

The light focusing unit 300 may focus the light and transmit the light to the photovoltaic unit 200.

The control unit 400 can control the operation of the light blocking system 1 as a whole.

The electric wire (W) can electrically connect the respective components of the light blocking system (1).

The optical member 10 may be various members using light such as a window or a mirror. When the optical member 10 is a window, the amount of light transmitted through the window can be adjusted by the transmittance changing unit 100 disposed on the window. When the optical member 10 is a mirror, the amount of light reflected through the mirror can be adjusted by the transmittance changing unit 100 disposed on the mirror.

On the other hand, the light blocking system 1 can be embodied as a light blocking system 1 that includes more configurations than the configuration shown in Fig. For example, the light blocking system 1 may include optical members for adjusting the optical properties of the transmittance changing unit 100, such as optical reflectivity and optical refractive index.

Hereinafter, each configuration of the light blocking system 1 will be described in detail. First, the transmittance changing section 100 will be described.

2, the transmittance changing unit 100 may be implemented with an electrode layer including a first electrode 110 and a second electrode 130, a transmittance changing layer 120, and a sealing frame 140 have.

The electrode layer including the first electrode 110 and the second electrode 130 may apply power to the transmittance changing layer 120. The transmittance changing layer 120 can change the transmittance by receiving power from the electrode layer. The sealing frame 140 can prevent the permeability-varying layer 120 from being physically separated.

Hereinafter, each configuration of the transmittance changing unit 100 will be described in detail.

The electrode layer may be formed of a transparent and conductive material. For example, the electrode layer may be formed of ITO (Indium Tin Oxide) or IZO (Indium Zirconium Oxide). Accordingly, the electrode layer may have both a transparent property and a conductivity.

The transmittance changing layer 120 may include a material whose transmittance is changed based on a power source applied to the electrode layer as described above. For example, the transmittance changing layer 120 may include a liquid crystal material, an electrochromic material, a PDLC material, and an SPD material. In other words, the transmittance changing layer 120 may be implemented with a liquid crystal layer including a liquid crystal material, an electrochromic layer including an electrochromic material, a PDLC layer including a PDLC material, and an SPD layer including an SPD material . For convenience of explanation, it will be described that the transmissivity-changing layer 120 is a liquid crystal layer including a liquid crystal material.

The transmittance changing layer 120 may be disposed between the electrode layers.

The arrangement of the liquid crystal material included in the transmittance changing layer 120 may be changed based on the electrode layer to which the power is applied. For example, the liquid crystal material included in the transmittance changing layer 120 may be arranged in an electric field direction formed around the electrode layer to which the power source is applied. The liquid crystal material may be arranged in an electric field direction formed between the first electrode 110 and the second electrode 130 in an electric field direction.

The sealing frame 140 may be disposed around the transmissivity-changing layer 120 to prevent the transmissivity-modifying layer 120 from being separated from the transmissivity-modifying layer 120. More specifically, the sealing frame 140 is disposed in contact with the transmissivity-changing layer 120 to support the transmissivity-modifying layer 120, so that the transmissivity-modifying layer 120 is physically separated from the transmissivity- Can be prevented.

Hereinafter, the photovoltaic unit 200 and the light focusing unit 300 will be described.

FIG. 3 is a view illustrating a light generating unit 200 and a light focusing unit 300 provided in the light generating unit 200 according to an embodiment of the present invention.

3, the photovoltaic portion 200 includes photovoltaic electrode layers 240 and 250 including a first photovoltaic electrode layer 250 and a second photovoltaic electrode layer 240, a light reflection preventing member 210, The first semiconductor layer 220 and the second semiconductor layer 230. The light focusing part 300 may be in contact with the light generating part 200. [

The first photovoltaic electrode layer 210 and the second photovoltaic electrode layer 240 may be implemented as the first electrode layer 110 and the second electrode layer 130, It is omitted.

The light reflection preventing member 210 may transmit light into the photovoltaic unit 200.

The first semiconductor layer 220 and the second semiconductor layer 230 may include a semiconductor material and generate electric power.

The light focusing unit 300 may focus the light to the photovoltaic unit 200.

Hereinafter, each configuration of the photovoltaic unit 200 and the light focusing unit 300 will be described in detail.

The light reflection preventing member 210 can improve the transmission rate of light transmitted into the photovoltaic unit 200. The light reflection preventing member 210 may reduce the amount of light reflected from the photoconductor 200 and increase the amount of light transmitted into the photoconductor 200.

The light reflection preventing member 210 may be disposed between at least one of the first photovoltaic electrode layer 250 and the second photovoltaic electrode layer 240. In other words, the light reflection preventing member 210 may be disposed alternately, and the first photovoltaic electrode layer 250 may be disposed between the light reflection preventing members 210.

The first semiconductor layer 220 and the second semiconductor layer 230 may receive light and produce electric power.

The first semiconductor layer 220 and the second semiconductor layer 230 may include a semiconductor material corresponding to each other. In particular, when the first semiconductor layer 220 includes a P-type semiconductor material, the second semiconductor layer 230 may include an N-type semiconductor material, and the first semiconductor layer 220 may include an N- When a semiconductor material is included, the second semiconductor layer 230 may include a P-type semiconductor material.

The P-type semiconductor material may include P-type dopants such as Mg, Zn, Ca, Sr, and Ba. The N-type semiconductor material may include an N-type dopant of Si, Ge, Sn, Se, and Te.

The light focusing unit 300 may condense and transmit light into the photovoltaic unit 200. Since the light focusing unit 300 is provided, the amount of light applied to the light generating unit 200 can be increased compared with the case where the light focusing unit 300 is not provided. Specifically, the light focusing unit 300 is configured to include an outer surface implemented as a material for reflecting the light in an inner direction of the light focusing unit 300 and an inner surface implemented as a material for conducting the light, When light is applied to the light focusing unit 300, the light is reflected from the outer surface of the light focusing unit 300 toward the inside of the light focusing unit 300, Can be conducted in the extending direction of the part (300). Accordingly, when light is applied to the light focusing part 300, the light can be conducted along the light focusing part 300.

The light focusing unit 300 may be disposed in contact with the light reflection preventing member 210. The light focusing unit 300 may focus the light onto the light reflection preventing member 210.

For example, the light focusing unit 300 may be an optical fiber.

The optical characteristics of the light reflection preventing member 210 and the light focusing unit 300 of the photovoltaic unit 200 may be formed to correspond to each other. The optical properties may include optical refractive index, light reflectance, and the like.

For example, the optical refraction index of the light reflection preventing member 210 and the refraction index of the light focusing unit 300 may correspond to each other.

Accordingly, the amount of light transmitted from the light focusing unit 300 to the inside of the photovoltaic unit 200 can be increased. The light transmitted from the light focusing unit 300 toward the photovoltaic unit 200 may be transmitted to the light reflection preventing member 300 through the light reflection preventing member 210. [ 210). For example, when the light reflection preventing member 210 and the light focusing unit 300 have different optical properties, the light transmitted to the light generating unit 200 may be reflected on the light reflection preventing member 210 . In contrast, when the light reflection preventing member 210 and the light focusing unit 300 have similar optical properties, light transmitted from the light focusing unit 300 toward the photovoltaic unit 200 is reflected by the light The light reflection preventing member 210 can be smoothly transmitted to the inside of the photovoltaic unit 200 without being blocked by the antireflective member 210. Accordingly, the light reflection preventing member 210 and the light focusing unit 300 are formed to have similar optical properties to each other, so that light emitted from the light focusing unit 300 to the inside of the light emitting unit 200 The amount can be increased.

Hereinafter, the control unit 400 will be described.

The controller 400 can control the operation of the light blocking system 1 as a whole. For example, the control unit 400 may control the power transmitted from the photovoltaic unit 200 to the transmittance changing unit 100. Specifically, the control unit 400 can transmit power from the photovoltaic unit 200 to the transmittance changing unit 100 or shut off the power. In other words, the control unit 400 may operate as a switch of a power source to be transmitted to the transmittance changing unit 100.

The control unit 400 may include an input / output unit, a communication unit, and a storage unit.

The input / output unit may be a variety of interfaces or ports for receiving user input or outputting information to a user. The input / output unit may be divided into an input module and an output module, which receive user input from the user. The user input may be in various forms including a key input, a touch input, and a voice input. Examples of the input module capable of receiving such user input include a conventional keypad, a keyboard, a mouse, a touch sensor for sensing a user's touch, a microphone for receiving a voice signal, a camera for recognizing a gesture through image recognition, A proximity sensor including an illuminance sensor or an infrared sensor for sensing user access, a motion sensor for recognizing a user's operation through an acceleration sensor or a gyro sensor, and various types of input means for sensing or receiving various types of user input . Here, the touch sensor may be implemented by a touch panel attached to a display panel or a piezoelectric or electrostatic touch sensor that senses a touch through a touch film, or an optical touch sensor that senses a touch by an optical method. In addition, the input module may be implemented in the form of an input interface (USB port, PS / 2 port, or the like) for connecting an external input device that receives user input instead of a device for sensing user input. The output module can output various information and provide it to the user. The output module is a comprehensive concept including a display for outputting images, a speaker for outputting sounds, a haptic device for generating vibration, and various other types of output means. In addition, the output module may be implemented in the form of a port type output interface for connecting the individual output means described above.

The communication unit can communicate with an external device. Here, the communication, that is, the transmission and reception of data, can be made by wire or wireless. The communication unit 1100 may include a wired communication module for connecting to the Internet or the like via a LAN (Local Area Network), a mobile communication module for connecting and receiving data to and from a mobile communication network via a mobile communication base station, a WLAN (Global Positioning System) such as a wireless local area network (WLAN) based communication method, a wireless personal area network (WPAN) based communication method such as Bluetooth or Zigbee, A navigation satellite system), or a combination thereof.

The storage unit may store various kinds of information. The storage unit may store data temporarily or semi-permanently. Examples of the storage unit include a hard disk drive (HDD), a solid state drive (SSD), a flash memory, a ROM (Read-Only Memory), a RAM (Random Access Memory) Can be. Such a storage unit may be provided in a built-in type or detachable type.

As described above, since the control unit 400 can control the operation of the light blocking system 1 as a whole, the operation of the light blocking system 1 is performed by the control unit 400 Can be interpreted as being.

Hereinafter, an embodiment of the light blocking system 1 will be described.

The photovoltaic unit 200 of the light blocking system 1 may be provided under an environmental condition in which no light is applied. In other words, the photovoltaic unit 200 may be provided in a physical space of an environment where light is blocked. Thus, the implementation of the light blocking system 1 can be facilitated. When the photovoltaic unit 200 of the light blocking system 1 is to be implemented in an environment in which light is not blocked, the light blocking system 1 may be provided only in a limited physical space. On the other hand, when the photovoltaic unit 200 of the light blocking system 1 can be provided even in an environment where light is blocked, the light blocking system 1 can be implemented in various physical spaces, The implementation of the system 1 can be facilitated.

FIGS. 4 and 5 are diagrams showing a light blocking system 1 including a photovoltaic portion 200 provided in a physical space of an environment where light is blocked according to an embodiment of the present application.

Referring to FIG. 4, the photovoltaic unit 200 of the light blocking system 1 according to an embodiment of the present invention may be provided in a physical space where light is blocked by a predetermined outer wall.

For example, as shown in FIG. 4, the photovoltaic unit 200 may be installed in an indoor space.

In this case, the photovoltaic unit 200 can receive light from an optical fiber under an environmental condition to which light can be applied. In other words, the optical fiber may extend from the photovoltaic unit 200 and penetrate the outer wall defining the interior space.

One end of the light focusing unit 300 is located in a physical space where light is blocked, and the other end of the light focusing unit 300 may be located in a physical space in which light exists.

One end of the light focusing unit 300 is located in an indoor space where light is blocked, and the other end of the light focusing unit 300 may be positioned under a condition that light is applied.

One end of the light focusing unit 300 is in contact with the photovoltaic unit 200, and the other end of the light focusing unit 300 may be located in a physical space where light is applied.

Accordingly, light may be transmitted from the other end of the light focusing unit 300 to the photovoltaic unit 200 through one end of the light focusing unit 300.

Also, referring to FIG. 5, the photovoltaic unit 200 of the light blocking system 1 may be provided in a physical space where light is blocked by a predetermined physical frame. For example, as shown in FIG. 5, the physical space may be a physical space covered by the frame.

In this case, the transmittance changing unit 100 is disposed in a space between frames, and the photovoltaic unit 200 is disposed in a physical space covered by the frame. The other end of the light focusing unit 300 is located outside the frame can do.

In this case, the photovoltaic unit 200 may be covered by the frame.

In this case, the optical fiber may extend outside the frame by penetrating the frame. One end of the light focusing unit 300 may be located in a physical space in which light is blocked, and may be located in a physical space under which light can be applied. One end of the light focusing unit 300 may be in contact with the photovoltaic unit 200 and the other end of the light focusing unit 300 may extend outside the frame.

The embodiments of the light blocking system 1 have been described above. Hereinafter, the operation of the light blocking system 1 will be described.

The light blocking system 1 may perform a light blocking operation. The light interception operation can be defined as the operation of the light interception system 1 to actively block the light applied to the light interception system 1. [

The light blocking operation may include a photovoltaic operation and a transmissivity changing operation. The photovoltaic operation can be defined as an operation of producing power based on the light to which the light blocking system 1 is applied. The transmittance changing operation can be defined as an operation of actively changing the transmittance of the light blocking system 1 based on the power generated in the photovoltaic operation.

Hereinafter, each operation will be described in detail. First, the photovoltaic operation will be described.

FIG. 6 is a diagram illustrating a photovoltaic unit 200 that performs a photovoltaic operation according to an embodiment of the present application.

Referring to FIG. 6, the photovoltaic unit 200 according to an embodiment of the present invention can generate power based on the applied light.

When light is applied to the other end of the light focusing unit 300, the light may be transmitted to the light generating unit 200 through one end of the light along the extending direction of the light focusing unit 300.

When the light is transmitted into the photovoltaic unit 200, current may be generated in the first semiconductor layer 220 and the second semiconductor layer 230. In particular, when the first semiconductor layer 220 includes an N-type semiconductor material and the second semiconductor layer 230 includes a P-type semiconductor material, electrons are transferred in the first semiconductor layer 220, A current may be generated due to the movement of the holes. On the contrary, when the first semiconductor layer 220 includes a P-type semiconductor material and the second semiconductor layer 230 includes an N-type semiconductor material, the holes are moved in the first semiconductor layer 220 and the second semiconductor layer 230, electrons can be moved.

The generation of the electric current may be caused by a PN junction generated by the junction of the P-type semiconductor layer and the N-type semiconductor layer. A potential difference is generated inside the photovoltaic unit 200 by the PN junction, specifically, the potential of the N-type semiconductor layer becomes high and the potential of the P-type semiconductor layer becomes low.

Electrons are generated in the N-type semiconductor layer and holes are generated in the P-type semiconductor layer by the light is applied to the inside of the photovoltaic unit 200, and the holes are moved in the direction of the P-type semiconductor layer having a low potential by the above- And electrons are moved in the direction of the N-type semiconductor layer, so that a current can be generated.

Hereinafter, the operation of changing the transmittance will be described.

FIG. 7 is a diagram showing a transmittance changing unit 100 for performing a transmittance changing operation according to an embodiment of the present application.

Referring to FIG. 7, the transmittance changing unit 100 may perform a transmittance changing operation according to an embodiment of the present invention. The transmittance changing unit 100 may change the transmittance based on the power produced according to the photovoltaic operation described above. In other words, the transmittance changing unit 100 may change the transmittance based on the power generated by the photovoltaic unit 200. [

The change in the transmittance of the transmittance changing unit 100 may be caused by the change in the arrangement of the liquid crystal material included in the transmittance changing unit 100.

When light is incident on the first electrode 110 or the second electrode 130, light may be transmitted or blocked depending on the arrangement of the liquid crystal material. When the liquid crystal material has an arrangement in a direction perpendicular to the first electrode 110 or the second electrode 130, light incident on the first electrode 110 or the second electrode 130 may change in transmittance It is possible to transmit the light. In other words, when the liquid crystal material has an arrangement perpendicular to the first electrode 110 or the second electrode 130, the transmittance of the transmittance changing unit 100 may be high. On the other hand, when the liquid crystal material has an arrangement in a direction parallel to the first electrode 110 or the second electrode 130, the light incident on the first electrode 110 or the second electrode 130 is And may be blocked by the transmittance changing unit 100. In other words, when the liquid crystal material has an arrangement in a direction parallel to the first electrode 110 or the second electrode 130, the transmittance of the transmittance changing unit 100 may be low.

The liquid crystal material included in the transmittance changing unit 100 may have an arrangement based on the electric power generated by the photovoltaic unit 200. The liquid crystal material may have an arrangement based on a power source supplied to at least one of the first electrode 110 and the second electrode 130. The liquid crystal material may be disposed between the first electrode 110 and the second electrode 130 based on a power source supplied to at least one of the first electrode 110 and the second electrode 130. [ As shown in FIG. For example, when an electric field is formed in the direction from the first electrode 110 to the second electrode 130, the liquid crystal material may move in a direction parallel to the direction of the second electrode 130 from the first electrode 110 Lt; / RTI >

The light interception operation of the light blocking system 1 has been described above. Hereinafter, the light shielding method of the light blocking system 1 will be described.

8 is a flowchart showing a light blocking method of the light blocking system 1 according to an embodiment of the present application.

Referring to FIG. 8, the light blocking method of the light blocking system 1 according to an embodiment of the present invention includes the steps of focusing the light (S1000), the photovoltaic (S2000), the power transmission (S3000) . &Lt; / RTI > However, the light blocking method may include more steps in addition to the above-described steps, and not all of the steps may be performed, and only some of the steps may be performed. Also, each step may not be performed in the above-described order.

Hereinafter, each step will be described in detail.

In the light focusing step S1000, the light focusing unit 300 may collect the light to be transmitted and transmit the collected light to the light generating unit 200. [

In the photovoltaic generation step S2000, the photovoltaic unit 200 may generate electric power based on the light transmitted from the light focusing unit 300.

In the power transmission step S3000, the transmittance changing unit 100 may receive the power generated in the photovoltaic unit 200. [

In the transmittance changing step S4000, the transmittance changing unit 100 may change the transmittance based on the received power to block the light.

&Lt; Embodiment 2 >

Hereinafter, the light blocking system 2 according to the second embodiment of the present application will be described.

Unless specifically stated otherwise, the following detailed description of the first embodiment can be applied to the second embodiment. The overlapping description of the first embodiment will be omitted.

9 is a view showing the light blocking system 2 according to the second embodiment of the present application.

Referring to FIG. 9, the light blocking system 2 according to the second embodiment of the present invention includes a plurality of first electrodes 110, a plurality of second electrodes 130, And a plurality of first electrodes provided on the plurality of first electrodes and a plurality of second electrodes provided on the plurality of first electrodes, 130, respectively.

The first electrode 110 includes a 1-1 electrode 111, a 1-2 electrode 112 and a 1-3 electrode 113, and the second electrode 130 includes a 2- One electrode 131 and a second electrode 2 < RTI ID = 0.0 > 132 < / RTI >

The first electrode 110 and the second electrode 130 may be alternately arranged. In other words, the second electrode 130 may be disposed between the different first electrodes 110, and the first electrode 110 may be disposed between the different second electrodes 130. For example, as shown in FIG. 9, the second-first electrode 131 is disposed between the first-first electrode 111 and the first-second electrode 112, The second -2 electrode 132 may be disposed between the first electrode 112 and the first electrode 113.

The transmittance changing layer 120 may be disposed between the first electrode 110 and the second electrode 130. Specifically, a first transmissivity-changing layer 121, a second-first electrode 131, and a first-second electrode 131 are formed between the first 1-1 electrode 111 and the second- A second transmission variation layer 122 is formed between the first and

second electrodes

112 and 112 and a third transmission variation layer 123 is provided between the first and

second electrodes

112 and 132, The fourth transmissivity-changing layer 124 may be disposed between the electrode 132 and the first-third electrode 113.

Meanwhile, the transmittance changing unit 100 may have various transmittances according to a predetermined control. In other words, the transmittance changing unit 100 may have various transmittance levels according to a predetermined control. The operation in which the transmittance changing unit 100 is changed to various transmittances may be defined as a transmittance adjusting operation. Hereinafter, the operation of adjusting the transmittance of the transmittance changing unit according to the second embodiment of the present application will be described.

10 is a diagram showing an electrical connection relationship of the transmittance changing unit 100 according to an embodiment of the present application.

11 is a diagram showing an example of the operation of adjusting the transmittance of the transmittance changing unit 100 according to an embodiment of the present application.

Referring to FIG. 10, the transmittance changing unit 100 according to an embodiment of the present invention may have alternate electrical connection relationships. For example, the first electrode 110 may receive power generated from the photovoltaic unit 200, and the second electrode 130 disposed alternately with the first electrode 110 may be grounded . For this, power is supplied to the first electrode 110 through the first wire connected to the first electrode 110, and power is supplied to the second electrode 130 through the second wire connected to the second electrode 130. [ Can be grounded. Specifically, the 1-1 wire (W1-1) is contacted to the 1-1 electrode (111), the 1-2 wire (W1-2) is contacted to the 1-2 electrode , The first-third wire (W1-3) is brought into contact with the first-third electrode (113), the second-first wire (W2-1) is brought into contact with the second-first electrode (131) The second -2 wire 132 is connected to the second -2 wire W2-2 and the first 1-1 electrode 111, the 1-2 electrode 112 and the 1-3 electrode And the second electrode 130 including the second-first electrode 131 and the second-electrode electrode 132 may be grounded.

In the meantime, the first and

second electrodes

110 and 110 may be electrically connected to each other so that the first electrode 110 is grounded and the second electrode 130 is powered.

Accordingly, one electrode can be a common electrode for changing the transmittance of the transmittance changing layer 120. Since the one electrode is a common electrode for changing the transmittance of the transmittance changing layer 120, driving of the transmittance changing section 100 can be facilitated. When the common electrode of the transmissivity modifying layer 120 is not provided, the implementation of the transmissivity modifying section 100 may be complicated because electrodes for changing the transmissivity of the transmissivity modifying layer 120 must be separately provided. On the other hand, when the common electrode of the transmissivity-changing layer 120 is provided, since the number of electrodes for changing the transmissivity of the transmissivity-changing layer 120 is reduced compared to the above-described embodiment, Implementation can be relatively easy.

Hereinafter, the operation of adjusting the transmittance of the light blocking system 2 based on the above-described electrical connection relationship will be described.

11, the transmittance of the transmittance changing unit 100 may be adjusted according to the number of layers of the transmittance changing layer 120 included in the transmittance changing unit 100 according to an embodiment of the present invention have. For example, as the number of transmissivity-modifiable layers 120 in which the transmissivity of the transmissivity-modifiable layer 120 included in the transmissivity modifier 100 is driven increases, the transmissivity of the transmissivity modifier 100 may be further reduced have. Conversely, for example, as the number of transmissivity-modifying layers 120 driven by the transmissivity modifying section 100 decreases, the transmissivity of the transmissivity modifying section 100 can be further increased.

For this purpose, the controller 400 may control whether power is supplied to the power line. As shown in FIGS. 11 (a) and 11 (b), the controller 400 can control whether or not the electric power of the electric wire to which power is supplied is transmitted.

&Lt; Third Embodiment >

Hereinafter, the light blocking system 3 according to the third embodiment of the present application will be described.

Unless specifically stated, in the following third embodiment, the detailed descriptions in the first and second embodiments described above can be applied. The overlapping description of the first embodiment and the second embodiment will be omitted.

12 is a view showing a light blocking system 3 according to a third embodiment of the present application.

Referring to FIG. 12, the light blocking system 3 according to the third embodiment of the present application includes a 1-1 electrode 114, a 1-2 electrode 115, a 1-3 electrode 116, A plurality of first electrodes 110 including first to fourth electrodes 117, a filling member 500 disposed between the plurality of first electrodes 110, a second electrode 130, And a transmittance changing layer 120 disposed between the first electrode 110 and the second electrode 130.

The transmittance changing layer 120 disposed between the first electrode 110 and the second electrode 130 may be dividedly driven. The divided driving may be defined as driving the transmittance changing layer 120 such that the transmittance of the transmittance changing layer 120 is changed for each region.

The filling member 500 may be formed of a material having an insulating property. The filling member 500 may block the electrical connection between the plurality of first electrodes 110. In other words, the filling member 500 may block the exchange of electrons between the first electrodes 110.

For this purpose, the filling member 500 is disposed between the plurality of first electrodes 110 and may contact the first electrode 110.

In addition, the optical characteristics of the filling member 500 filled between the plurality of first electrodes 110 and the plurality of first electrodes 110 may be similar to each other. The optical characteristics may include light reflectivity and optical refractive index. The first electrode 110 and the filling member 500 are formed so as to have similar optical characteristics so that the first electrode 110 and the filling member 500 are visually connected to each other, Can be reduced.

On the other hand, power may be injected into each of the divided first electrodes 110. For this purpose, wires for power supply are provided for each of the 1-1 electrode 114, the 1-2 electrode 115, the 1-3 electrode 116, and the 1-4 electrode 117 And the power supply through each of the electric wires can be controlled by the control unit 400.

FIG. 13 is a perspective view showing a split-driven transmissivity-varying layer 120 according to the third embodiment of the present application.

Referring to FIG. 13, the transmittance changing layer 120 may have a different transmittance depending on the region. The transmittance changing layer 120 may include a first region 151, a second region 152, and a third region 153.

The first region 151 is defined as a region corresponding to the 1-1 electrode 114 and the second region 152 is defined as a region corresponding to the first electrode 110 and the first electrode 110, And the third region 153 may be defined as a region corresponding to the member 500. The third region 153 may be defined as a region corresponding to the first electrode 115. [

The first region 151 and the third region 153 corresponding to the first electrode 110 have a transmittance based on a power source applied to the first electrode 110 and the second region 152 has the same transmittance Lt; / RTI >

When power is applied to the 1-1 electrode 114 and no power is applied to the 1-2 electrode 115, the first region 151 has a first transmittance and the second region 152 and the third region 153 may have a second transmittance.

Alternatively, when power is applied to the first electrode 115 and power is not applied to the first electrode 114, the third region 153 has a first transmittance, The first region 151 and the second region 152 may have a second transmittance.

The first transmittance may be different from the second transmittance. For example, the first transmittance may be higher than the second transmittance, or the second transmittance may be higher than the first transmittance.

The liquid crystal material of the first region 151 and the third region 153 corresponding to the first electrode 110 is arranged based on a power source applied to the first electrode 110 and the liquid crystal material of the second region 152 The liquid crystal material can maintain the same alignment state.

When power is applied to the 1-1 electrode 114 and power is not applied to the 1-2 electrode 115, the first region 151 has a first arrangement state, The second region 152 and the third region 153 may have a second arrangement state.

Alternatively, when power is applied to the first electrode 115 and no power is applied to the first electrode 114, the third region 153 has a first arrangement state, The region 151 and the second region 152 may have a second arrangement state.

The first arrangement state and the second arrangement state may be different from each other.

In the light blocking system according to the present invention described above, the steps constituting each embodiment are not essential, and therefore, each embodiment can selectively include the above-described steps. Moreover, each step constituting each embodiment is not necessarily performed according to the order described, and the step described later may be performed before the step described earlier. It is also possible that each step is repeatedly performed during operation.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be apparent to those skilled in the art that such modifications or variations are within the scope of the appended claims.

Claims

At least one light focusing unit extending in one direction and allowing light to be focused in the one direction;

At least one light reflection preventing member contacted with each of the light focusing parts and implemented in a manner similar to the optical characteristics of the light focusing part so as to reduce the half specification of the light transmitted from the light focusing part, A first semiconductor layer that is formed on the basis of light that is focused by the light focusing unit and is transmitted through the light reflection preventing member, a second semiconductor layer that is in contact with the first semiconductor layer, A photovoltaic portion including a first photovoltaic electrode disposed in contact with the first semiconductor layer and a second photovoltaic electrode in contact with the second semiconductor layer; And

A first electrode electrically connected to the first photovoltaic electrode; a second electrode electrically connected to the second photovoltaic electrode; and a second electrode disposed between the first electrode and the second electrode, And a transmittance changing layer including a liquid crystal material so that the transmittance is changed by a power generation electrode or a power source based on the current transmitted from the second photovoltaic electrode

Light blocking system.
The method according to claim 1,

Wherein the light blocking system further comprises a predetermined frame,

Characterized in that the light focusing unit passes through the frame in the one direction.

Light blocking system.
3. The method of claim 2,

Wherein the photovoltaic portion is covered by the predetermined frame,

And the other end of the light focusing part passing through the frame is exposed in the one direction.

Light blocking system.
The method of claim 3,

One end of the light focusing unit is in contact with the light reflection preventing member of the photovoltaic unit and transmits light to the light reflection preventing member,

And the other end of the light converging portion receives light.

Light blocking system.
5. The method of claim 4,

Wherein the transmittance changing portion includes at least two of the first electrodes, at least one of the second electrodes, and at least two of the transmittance changing layers

Light blocking system.
6. The method of claim 5,

Wherein the first electrode includes a 1-1 electrode and a 1-2 electrode, the transmittance changing layer includes a first transmittance changing layer and a second transmittance changing layer,

The first electrode is disposed between the first 1-1 electrode and the 1-2 electrode, the first transmission variation layer is disposed between the 1-1 second electrode and the second electrode, And the second transmissivity-changing layer is disposed between the 1-2 electrode and the second electrode.

Light blocking system.
The method according to claim 6,

The first 1-1 electrode and the 1-2 second electrode for supplying power to each of the first electrodes are provided with a 1-1 wire and a 1-2 wire,

And the second electrode is electrically grounded.

Light blocking system.
8. The method of claim 7,

And the light blocking system further comprises a controller for controlling the power supplied to the 1-1 and 1-2 electrodes,

The control unit causes power to be transmitted to the 1-1 electrode through the 1-1 wire, and when the transmission of power through the 1-2 wire is interrupted, the first transmittance changing layer transmits the first transmittance Wherein the second transmissivity modifying layer has a second transmissivity and the first transmissivity is different from the second transmissivity.

Light blocking system.
9. The method of claim 8,

The control unit controls the power to be transmitted to the 1-1 electrode through the 1-1 wire, and when the transmission of power through the 1-2 wire is interrupted, Wherein the material has a first alignment state and the liquid crystal material contained in the second transmissivity-changing layer has a second alignment state.

Light blocking system.
10. The method of claim 9,

Wherein the plurality of first electrodes are spaced apart from each other by a predetermined distance on the transmittance changing layer,

Wherein the light blocking system further comprises a filling member disposed in the spaced space between the first electrodes.

Light blocking system.
11. The method of claim 10,

And a plurality of first electrodes disposed on the transmittance changing layer,

Wherein the control unit controls the transmission of power from the plurality of first electrodes disposed on the transmittance changing layer such that the transmittance is changed for each of the plurality of first electrodes disposed on the transmittance changing layer, And said control means

Light blocking system.