WO2014175596A1 - Electronic paper terminal having solar cell - Google Patents
Electronic paper terminal having solar cell Download PDFInfo
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- WO2014175596A1 WO2014175596A1 PCT/KR2014/003325 KR2014003325W WO2014175596A1 WO 2014175596 A1 WO2014175596 A1 WO 2014175596A1 KR 2014003325 W KR2014003325 W KR 2014003325W WO 2014175596 A1 WO2014175596 A1 WO 2014175596A1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/30—Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
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- the present invention relates to an electronic paper terminal having a solar cell.
- the present invention relates to an integrated power source technology for increasing efficiency of a driving power source by arranging a solar cell on a rear surface of a display screen of a terminal as an auxiliary power source used for an electronic paper terminal.
- Electronic paper display (E-Paper Display) is being developed as a next-generation display device that follows a liquid crystal display, a plasma display panel, and an organic luminescence device.
- Electronic paper in particular, is a display device that displays characters or images using a thin, flexible substrate with millions of beads scattered in oil holes, and can be used to reproduce millions of times.
- the electronic paper display element is the core of the flexible display, and is based on electrophoretics that impart kinetic properties by applying an electromagnetic field to a conductive material. Thus, fine particles having conductivity between thin flexible substrates are provided. After the distribution of these components, the data is represented by a change in the arrangement of directions of the particles (or charged particles) due to the change in the polarity of the electromagnetic field.
- Electronic paper is much cheaper to produce than conventional flat panel display panels and does not require backlighting or continuous recharging like liquid crystal displays, so it can be driven with very little energy, leading to energy efficiency.
- the electronic paper is very sharp, has a wide viewing angle, and has a memory function that does not completely disappear even in the absence of power.
- a solar cell In general, a solar cell is called a cell, and the voltage from one cell is usually about 0.5V, so it is possible to connect a plurality of solar cells in parallel to obtain a practical range of voltage and output depending on the range of use.
- the power generation device manufactured by packaging in one sheet is called a PV module.
- flexible thin film solar cells are a technology that can significantly reduce the manufacturing cost of solar cells based on low cost, light weight materials and excellent productivity compared to thin film solar cells using crystalline silicon solar cells or glass substrates.
- the silicon thin film and the CI (G) S compound thin film As the light absorbing layer for the flexible thin film solar cell, which is currently being actively developed, the silicon thin film and the CI (G) S compound thin film.
- a metal thin film (M, Ag, Al, etc.) having excellent reflectance and electrical conductivity is used as the back electrode layer, and a transparent conductive layer such as ZnO and ITO having excellent transmittance and excellent electrical conductivity is used as the transparent conductive layer as a window layer. do.
- the flexible thin film solar cell is lightweight, not easily broken, and has excellent aesthetics and applicability as well as low-cost characteristics. I am currently exploring.
- Korean Patent Publication No. 10-760084 relates to an electronic paper display device, and in particular, a lower substrate and an upper substrate disposed to face each other at a predetermined interval; A lower electrode and an upper electrode inscribed to the lower substrate and the upper substrate, respectively, to form a pixel space; And particles encapsulated in a pixel space formed between the lower electrode and the upper electrode, wherein at least one of the lower substrate and the upper substrate is formed of an electronic paper display device made of the same material as the particles.
- Patent Publication No. 10-760084 is for preventing the aggregation of particles without a separate device for the external auxiliary power, there is no recognition of the efficient supply and use of power.
- the present invention is a thin-film solar cell on the back of the display of the electronic paper terminal. By inserting the power, it is possible to efficiently manage and supply power.
- the present invention inserts a thin-film solar cell on the back of the display unit of the electronic paper terminal to efficiently manage and supply power.
- the electronic paper element is not operated and light enters the solar cell and is charged in the battery.
- Charged electricity is supplied to the power source during operation, and even during operation, internal light reflected by the opaque particles representing black inside the electronic ink (e-ink) is incident on the solar cell, thereby generating electricity generated from the solar cell.
- the generated electric energy can be used as a power source at the moment required to increase energy efficiency
- FIG. 1 is a view from above of an electronic paper terminal equipped with a solar cell of the present invention.
- FIG. 2 is a structural diagram showing a cross section of an electronic paper terminal provided with a solar cell plate.
- FIG. 3 is a flowchart illustrating a step of supplying power of a solar cell and a battery according to whether the display unit is operated.
- FIG. 4 is a block diagram of a power supply of a solar cell and a battery.
- FIG. 1 is a view of the electronic paper terminal 100 provided with a solar cell of the present invention from above, the display unit 110 is located in the center of the terminal, the solar cell unit 120 having a larger area than the display unit is present at the bottom of the display unit As a result, only the portion that does not overlap the display portion is visible.
- FIG. 2 is a cross-sectional view of an electronic paper terminal provided with a solar cell plate, a lower substrate, a solar cell unit positioned at an upper portion of the lower substrate to absorb light incident to generate power, and located at an upper portion of the lower substrate. It comprises a display unit and an upper substrate of the electronic paper terminal, the solar cell portion is made of a larger area than the display portion, there is no display portion on the upper portion has a portion directly irradiated with light.
- the display unit is provided with a partition wall for dividing a unit pixel for determining a resolution, a partition wall for each partition wall, and a lower insulating layer on the solar cell unit, a lower electrode on a lower insulating layer, and electrons present in each pixel.
- a partition wall for dividing a unit pixel for determining a resolution
- a partition wall for each partition wall and a lower insulating layer on the solar cell unit
- a lower electrode on a lower insulating layer and electrons present in each pixel.
- It consists of an ink (e-ink), an upper insulating layer located on the entire upper portion of the display unit, and an upper electrode present on the upper insulating layer, of which the electronic ink (e-ink) has a cathode that transmits light
- It consists of particles and particles with an anode that do not transmit light.
- the same voltage is applied to all of the upper electrodes, and different voltages suitable for the screen to be displayed through the TFT (Thin Film Transitor) driver are applied to the lower electrodes.
- the voltage generated by the solar cell unit is used as a power source for applying the same voltage (Common Voltage) of the upper electrode.
- 3 is a method for supplying power using the electronic paper terminal 100 equipped with a solar cell of such a configuration, and after the light is incident on the solar cell to generate power, whether the display unit is driven first. If the display unit is not driven, the first power control unit disconnects the display unit from the power supply, and the second power control unit electrically connects the solar cell and the battery to charge the battery with the power generated by the solar cell. do.
- the first power controller determines whether the voltage generated by the solar cell is greater than or equal to the upper electrode applied voltage of the display unit. If the display unit is abnormal, the generated voltage of the solar cell unit is applied to the upper electrode of the display unit. If less, the voltage of the battery is applied to the upper electrode of the display unit.
- FIG. 4 is a block diagram for explaining the supply system in more detail, the power supply system of a solar cell and a battery, a solar cell unit for generating light by irradiating light, a battery for supplying power to an electronic paper terminal,
- the first power controller which applies the voltage of the solar cell unit to the upper electrode, and when the display unit does not operate, the solar cell unit
- a second power control unit configured to charge a generated voltage to a battery performs the power supply method, thereby supplying power according to an operating state of a display unit.
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Abstract
Description
본 발명은 태양전지를 구비한 전자종이 단말기에 관한 것으로, 전자 종이 단말기에 사용되는 보조 전원으로 태양전지를 단말기의 표시화면 후면부에 배치함으로써, 구동 전원의 효율성을 높이고자 하는 전원 복합형 기술이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic paper terminal having a solar cell. The present invention relates to an integrated power source technology for increasing efficiency of a driving power source by arranging a solar cell on a rear surface of a display screen of a terminal as an auxiliary power source used for an electronic paper terminal.
전자 종이 디스플레이(E-Paper Display)는 액정 표시장치(Liquid Crystal Display), 플라즈마 디스플레이 패널(Plasma Display Panel), 유기 전계발광(Electro Luminescence) 소자를 뒤이을 차세대 표시 소자로 개발되고 있다. 특히 전자종이(Electronic Paper)는 수백만 개의 구슬이 기름 구멍 안에 뿌려져 있는 박형의 유연한 기판을 이용해서 문자나 영상을 표시하는 디스플레이 소자로써, 수백만 번을 재생해 쓸 수 있는 것이다.Electronic paper display (E-Paper Display) is being developed as a next-generation display device that follows a liquid crystal display, a plasma display panel, and an organic luminescence device. Electronic paper, in particular, is a display device that displays characters or images using a thin, flexible substrate with millions of beads scattered in oil holes, and can be used to reproduce millions of times.
이러한 전자종이 표시소자는 플렉서블(flexible)한 디스플레이 구현의 핵심이 되는 것으로, 도전성 물질에 전자기장을 가하여 운동성을 갖게 한다는 전기영동학에 기초를 둔 것으로써, 박형의 플렉서블한 기판들 사이에 도전성을 가진 미립자들을 분포시킨 후 전자기장의 극성변화에 의한 미립자들(또는 대전입자들)의 방향 배치 변화로데이터를 표현하는 것이다. 전자종이는 기존의 평면 디스플레이 패널에 비하여 생산단가가 훨씬 저렴하고 액정표시소자처럼 배경조명이나 지속적인 재충전이 필요하지 않으므로 아주 적은 에너지로도 구동될 수 있어서 에너지 효율도 월등히 앞선다. 아울러, 전자종이는 매우 선명하고, 시야각이 넓으며 전원이 없더라도 글씨가 완전히 사라지지 않는 메모리 기능도 가지고 있다. 이러한 큰 장점으로 인해 전자종이는 종이와 같은 면과 움직이는 일러스트레이션을 갖는 전자서적, 자체 갱신성 신문, 이동 전화를 위한 재사용 가능한 종이 디스플레이, 폐기 가능한 TV 스크린 및 전자 벽지 등 실로 광대한 분야에 응용될 수 있으며 거대한 잠재 시장을 가지고 있다.The electronic paper display element is the core of the flexible display, and is based on electrophoretics that impart kinetic properties by applying an electromagnetic field to a conductive material. Thus, fine particles having conductivity between thin flexible substrates are provided. After the distribution of these components, the data is represented by a change in the arrangement of directions of the particles (or charged particles) due to the change in the polarity of the electromagnetic field. Electronic paper is much cheaper to produce than conventional flat panel display panels and does not require backlighting or continuous recharging like liquid crystal displays, so it can be driven with very little energy, leading to energy efficiency. In addition, the electronic paper is very sharp, has a wide viewing angle, and has a memory function that does not completely disappear even in the absence of power. These great advantages make it possible for electronic paper to be used in a wide range of applications, such as e-books with paper-like sides and moving illustrations, self-renewable newspapers, reusable paper displays for mobile phones, disposable TV screens and electronic wallpaper. It has a huge potential market.
일반적으로 태양전지는 최소단위를 셀이라고 하며 보통 셀 1개로부터 나오는 전압이 약 0.5V로 매우 작으므로 다수의 태양전지를 직병렬로 연결하여 사용범위에 따라 실용적인 범위의 전압과 출력을 얻을 수 있도록 1매로 패키징하여 제작된 발전장치를 태양전지 모듈(PV Module)이라고 한다.In general, a solar cell is called a cell, and the voltage from one cell is usually about 0.5V, so it is possible to connect a plurality of solar cells in parallel to obtain a practical range of voltage and output depending on the range of use. The power generation device manufactured by packaging in one sheet is called a PV module.
특히, 플렉서블(flexible) 박막 태양전지는 기존의 결정질 실리콘 태양전지나 유리기판을 사용하는 박막 태양전지에 비하여 저가, 경량소재 사용 및 우수한 생산성을 바탕으로 태양전지의 제조비용을 획기적으로 저감할 수 있는 기술로, 현재 개발이 가장 활발히 진행되고 있는 플렉서블 박막 태양전지용 광흡수층으로는 실리콘 박막 및 CI(G)S 화합물 박막이다. 후면전극층으로는 일반적으로 반사율과 전기전도성이 우수한 금속박막(M, Ag, Al 등)을 사용하고, 투명전도층은 Window층으로 투과율이 우수한 동시에 전기전도성이 우수한 ZnO, ITO 등의 투명전도막을 사용한다. In particular, flexible thin film solar cells are a technology that can significantly reduce the manufacturing cost of solar cells based on low cost, light weight materials and excellent productivity compared to thin film solar cells using crystalline silicon solar cells or glass substrates. As the light absorbing layer for the flexible thin film solar cell, which is currently being actively developed, the silicon thin film and the CI (G) S compound thin film. In general, a metal thin film (M, Ag, Al, etc.) having excellent reflectance and electrical conductivity is used as the back electrode layer, and a transparent conductive layer such as ZnO and ITO having excellent transmittance and excellent electrical conductivity is used as the transparent conductive layer as a window layer. do.
또한, 플렉서블 박막 태양전지는 저가화 특성과 더불어 경량이며 잘 깨지지 않고, 심미성과 적용성이 우수하여, 대용량 발전의 시장 대체뿐만 아니라, 각종 전자단말기에 보조 전원으로 구비시킴으로써, 효율적인 전원 공급을 위한 응용도 현재 모색 중이다.In addition, the flexible thin film solar cell is lightweight, not easily broken, and has excellent aesthetics and applicability as well as low-cost characteristics. I am currently exploring.
등록특허공보 10-760084호는 전자종이 디스플레이 장치에 관한 것으로, 특히 소정의 간격을 두고 대향 배치되는 하부기판과 상부기판; 상기 하부기판과 상부기판에 각각 내접하여 화소공간을 형성하는 하부전극과 상부전극; 및 상기 하부전극과 상부전극 사이에 형성된 화소공간에 봉입된 입자;를 포함하고, 상기 하부기판과 상부기판 중 적어도 하나는 상기 입자와 같은 재료로 이루어진 전자종이 디스플레이 장치에 의하는 경우, 기판과 입자 사이에 전기력이 발생하지 않거나 최소화되어 기판에 존재하는 전자기력에 의해 입자가 영향받는 것을 최소화함으로써, 기판의 영향에 의해 입자 간 혹은 기판이나 격벽 및 전극에 입자가 뭉치는 뭉침현상을 방지할 수 있고, 입자의 유동성을 증가시킬 수 있다. 그러나 등록특허공보 10-760084호는 외부의 보조 전원에 대한 별도의 장치 없이 입자의 뭉침 현상 방지를 위한 것으로 전원의 효율적 공급 및 이용에 대한 인식은 없다.Korean Patent Publication No. 10-760084 relates to an electronic paper display device, and in particular, a lower substrate and an upper substrate disposed to face each other at a predetermined interval; A lower electrode and an upper electrode inscribed to the lower substrate and the upper substrate, respectively, to form a pixel space; And particles encapsulated in a pixel space formed between the lower electrode and the upper electrode, wherein at least one of the lower substrate and the upper substrate is formed of an electronic paper display device made of the same material as the particles. By minimizing the influence of the particles by the electromagnetic force present in the substrate is not generated or minimized between the electric force, it is possible to prevent the agglomeration of particles between the particles or the substrate, the partition and the electrode by the influence of the substrate, It can increase the fluidity of the particles. However, Patent Publication No. 10-760084 is for preventing the aggregation of particles without a separate device for the external auxiliary power, there is no recognition of the efficient supply and use of power.
최근에 에너지 절감과 환경 등의 이슈로, 에너지를 효율적으로 활용할 수 있는 방법에 대한 연구가 많이 진행되고 있다. 대용량 에너지의 공급 뿐만 아니라, 각종 전자기기의 전원을 효율적으로 공급하여, 효율성을 높이기 위한 구조와 방법에 대한 연구도 활발히 진행중인데, 본 발명은 이에 대한 일환으로 전자 종이 단말기의 표시부 후면에 박막형 태양전지를 삽입함으로써, 전원을 효율적으로 관리, 공급할 수 있도록 하고자 한다.Recently, a lot of researches on how to use energy efficiently due to issues such as energy saving and environment. In addition to supplying large-capacity energy, research is being actively conducted on the structure and method for efficiently supplying power of various electronic devices and improving efficiency. The present invention is a thin-film solar cell on the back of the display of the electronic paper terminal. By inserting the power, it is possible to efficiently manage and supply power.
본 발명은 전원을 효율적으로 관리, 공급할 수 있도록 하고자 전자 종이 단말기의 표시부 후면에 박막형 태양전지를 삽입한다.The present invention inserts a thin-film solar cell on the back of the display unit of the electronic paper terminal to efficiently manage and supply power.
특히, 저가이고, 얇으며, 가볍고, 크기가 작아 삽입이 쉬우며, 유연성을 갖는 플렉서블 태양전지를 채용함으로써, 전자 종이 소자가 동작하지 않을 때에는 빛이 태양전지로 입사되어 배터리에 충전되도록 하고, 이렇게 충전된 전기는 동작시에 전원으로 공급되며, 동작하는 기간에도 전자 잉크(e-ink) 내부의 흑색을 표현하는 불투명 입자에 반사된 내부광이 태양전지로 입사되어, 태양전지에서 발생된 전기를 전원으로 공급할 수 있도록 하였다.In particular, by adopting a flexible solar cell that is inexpensive, thin, lightweight, small in size, easy to insert, and flexible, the electronic paper element is not operated and light enters the solar cell and is charged in the battery. Charged electricity is supplied to the power source during operation, and even during operation, internal light reflected by the opaque particles representing black inside the electronic ink (e-ink) is incident on the solar cell, thereby generating electricity generated from the solar cell. Can be supplied by power.
전자 종이 후면에 태양전지를 삽입함으로써,By inserting the solar cell on the back of the electronic paper,
첫번째로는 전자 종이 소자가 동작하지 않는 기간에는 빛이 태양전지로 입사되어 배터리에 충전되도록 하여 전기 에너지를 생성할 수 있고,First, when the electronic paper device is not in operation, light may be incident on the solar cell and charged in the battery to generate electrical energy.
두번째로는 상기 생성된 전기에너지를 필요한 순간에 전원으로 사용할 수 있어 에너지 효율을 높일 수 있으며,Secondly, the generated electric energy can be used as a power source at the moment required to increase energy efficiency,
세번째로는 전자 종이 소자가 동작하는 기간에도 내부에서 반사되는 빛의 일정부분과 표시부 이외의 부분에서 태양전지로 빛이 입사되게 하여, 일정량의 전기를 생성하여 이를 전원으로 사용할 수 있도록 한다. Thirdly, even when the electronic paper device is operating, light is incident on the solar cell from a portion of the light reflected from the inside and a portion other than the display unit, so that a certain amount of electricity can be generated and used as a power source.
도 1은 본 발명인 태양전지가 구비된 전자종이단말기를 위에서 본 그림이다.1 is a view from above of an electronic paper terminal equipped with a solar cell of the present invention.
도 2는 태양전지 판이 구비된 전자종이 단말기의 단면을 나타낸 구조도이다.2 is a structural diagram showing a cross section of an electronic paper terminal provided with a solar cell plate.
도 3은 표시부의 동작여부에 따라 태양전지와 배터리의 전원공급이 이루어지는 단계를 나타낸 순서도이다.3 is a flowchart illustrating a step of supplying power of a solar cell and a battery according to whether the display unit is operated.
도 4는 태양전지와 배터리의 전원공급에 대한 블럭도이다.4 is a block diagram of a power supply of a solar cell and a battery.
<부호의 설명><Description of the code>
100: 전자종이단말기 100: electronic paper terminal
110: 표시부110: display unit
120: 표시부 외곽에 설치된 태양전지 장착부120: solar cell mounting unit installed outside the display unit
121: 투명전극층121: transparent electrode layer
122: 하부에 설치된 태양전지부122: solar cell unit installed in the lower portion
210: 상부 기판210: upper substrate
220: 상부 전극220: upper electrode
230: 상부 절연층230: upper insulating layer
300: 격벽300: bulkhead
410: (+) 입자 분말410: (+) particle powder
420: (-) 입자 분말420: (-) particle powder
510: 하부 절연층510: lower insulating layer
520: 하부 전극520: lower electrode
600: 하부 기판600: lower substrate
본 발명의 태양전지를 구비한 전자종이 단말기에 대해 첨부된 도면을 통하여 상세히 설명하도록 한다.Electronic paper with a solar cell of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명인 태양전지가 구비된 전자종이단말기(100)를 위에서 본 그림으로, 단말기 중앙에 표시부(110)가 위치하고, 표시부보다 큰 면적을 갖는 태양전지부(120)가 표시부의 하단에 존재하여, 외관상으로는 표시부에 중첩되지 않는 부분만이 보이게 된다.1 is a view of the
도 2는 태양전지 판이 구비된 전자종이 단말기의 단면을 나타낸 것으로, 하부기판, 상기 하부기판의 상부에 위치하여 입사되는 빛을 흡수하여 전력을 발생시키는 태양전지부, 상기 하부기판의 상부에 위치하는 표시부, 및 전자 종이 단말기의 상부기판을 포함하여 이루어지고, 상기 태양전지부는 상기 표시부보다 큰 면적으로 이루어져, 상부에 표시부가 없어 광이 직접 조사되는 부분을 갖는다.2 is a cross-sectional view of an electronic paper terminal provided with a solar cell plate, a lower substrate, a solar cell unit positioned at an upper portion of the lower substrate to absorb light incident to generate power, and located at an upper portion of the lower substrate. It comprises a display unit and an upper substrate of the electronic paper terminal, the solar cell portion is made of a larger area than the display portion, there is no display portion on the upper portion has a portion directly irradiated with light.
특히, 상기 표시부는 해상도를 결정하는 단위 화소를 구분하는 격벽, 각 격벽마다 분리되어 구비되고, 상기 태양전지부 위에 위치하는 하부 절연층, 하부절연층위에 위치하는 하부 전극, 각 화소내에 존재하는 전자 잉크(e-ink), 상기 표시부 전체의 상부에 위치하는 상부 절연층, 및 상기 상부 절연층 위에 존재하는 상부 전극으로 이루어지며, 이 중 전자 잉크(e-ink)는 빛을 투과하는 음극을 띄는 입자와 빛을 투과하지 않는 양극을 띄는 입자로 구성된다.In particular, the display unit is provided with a partition wall for dividing a unit pixel for determining a resolution, a partition wall for each partition wall, and a lower insulating layer on the solar cell unit, a lower electrode on a lower insulating layer, and electrons present in each pixel. It consists of an ink (e-ink), an upper insulating layer located on the entire upper portion of the display unit, and an upper electrode present on the upper insulating layer, of which the electronic ink (e-ink) has a cathode that transmits light It consists of particles and particles with an anode that do not transmit light.
또한 상부 전극에는 모두 동일한 전압이 인가되고, 하부 전극은 TFT(Thin Film Transitor) 구동부를 통해 표시하고자 하는 화면에 적합한 서로 다른 전압이 인가되게 된다. 이때 태양전지부에서 생성된 전압은 상부 전극의 동일 전압(Common Voltage)을 인가하는 전원으로 사용되게 된다.In addition, the same voltage is applied to all of the upper electrodes, and different voltages suitable for the screen to be displayed through the TFT (Thin Film Transitor) driver are applied to the lower electrodes. At this time, the voltage generated by the solar cell unit is used as a power source for applying the same voltage (Common Voltage) of the upper electrode.
도 3은 이러한 구성의 태양전지가 구비된 전자종이단말기(100)를 사용해 전원을 공급하는 방법에 대한 것으로, 태양전지부에 광이 입사되어 전력이 생성된 이후에, 가장 먼저 표시부가 구동중인지 여부를 판단하고, 표시부가 구동중이 아니라면, 제1 전원 제어부에서 표시부와 전원간의 연결을 끊고, 제2 전원 제어부에서 태양전지와 배터리를 전기적으로 연결하여, 태양전지에서 생성되는 전력을 배터리에 충전하도록 한다. 3 is a method for supplying power using the
만일, 표시부가 구동중이라면, 상기 제1 전원 제어부에서 태양전지에서 생성된 전압이 표시부의 상부 전극 인가 전압 이상인 지를 판단하여, 이상이라면, 태양전지부의 생성전압을 표시부의 상부 전극으로 인가시키고, 미만이라면, 배터리의 전압을 표시부의 상부 전극으로 인가시키도록 한다.If the display unit is being driven, the first power controller determines whether the voltage generated by the solar cell is greater than or equal to the upper electrode applied voltage of the display unit. If the display unit is abnormal, the generated voltage of the solar cell unit is applied to the upper electrode of the display unit. If less, the voltage of the battery is applied to the upper electrode of the display unit.
이러한 공급 시스템을 더욱 자세히 설명하기 위한 블럭도인 도4는 태양전지와 배터리의 전원공급 시스템에 대한 것으로, 빛이 조사되어 전력을 생성하는 태양전지부, 전자종이 단말기에 전원을 공급하기 위한 배터리, 태양전지부의 전압이 상기 상부 전극의 구동 전압보다 높은지를 판단하여 높은 경우, 상기 태양전지부의 전압을 상기 상부 전극에 인가하는 제1 전원 제어부, 표시부가 동작하지 않을 때, 상기 태양전지부에서 생성되는 전압을 배터리에 충전하도록 하는 제2 전원 제어부로 이루어져 상기 전원 공급방법을 수행하여, 표시부의 동작상태에 따라 전원이 공급되도록 하는 시스템이다.4 is a block diagram for explaining the supply system in more detail, the power supply system of a solar cell and a battery, a solar cell unit for generating light by irradiating light, a battery for supplying power to an electronic paper terminal, When the voltage of the solar cell unit is higher than the driving voltage of the upper electrode, the first power controller which applies the voltage of the solar cell unit to the upper electrode, and when the display unit does not operate, the solar cell unit A second power control unit configured to charge a generated voltage to a battery performs the power supply method, thereby supplying power according to an operating state of a display unit.
본 발명을 첨부된 도면과 함께 설명하였으나, 이는 본 발명의 요지를 포함하는 다양한 실시 형태 중의 하나의 실시예에 불과하며, 당업계에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 하는 데에 그 목적이 있는 것으로, 본 발명은 상기 설명된 실시예에만 국한되는 것이 아님은 명확하다. 따라서, 본 발명의 보호범위는 하기의 청구범위에 의해 해석되어야 하며, 본 발명의 요지를 벗어나지 않는 범위내에서의 변경, 치환, 대체 등에 의해 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함될 것이다. 또한, 도면의 일부 구성은 구성을 보다 명확하게 설명하기 위한 것으로 실제보다 과장되거나 축소되어 제공된 것임을 명확히 한다.Although the present invention has been described with reference to the accompanying drawings, it is merely one example of various embodiments including the gist of the present invention, which can be easily implemented by those skilled in the art. It is clear that the present invention is not limited to the above-described embodiment only. Therefore, the protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto by the change, substitution, substitution, etc. within the scope not departing from the gist of the present invention are the rights of the present invention. It will be included in the scope. In addition, some of the components of the drawings are intended to more clearly describe the configuration, and it is clear that the exaggerated or reduced size is provided.
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| KR1020130044040A KR101448938B1 (en) | 2013-04-22 | 2013-04-22 | A e-paper terminal equipped with a solar cell. |
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| CN112951167A (en) * | 2021-01-26 | 2021-06-11 | 深圳天德钰科技股份有限公司 | Electrophoretic display and driving method thereof |
| WO2025148903A1 (en) * | 2024-01-08 | 2025-07-17 | 汉朔科技股份有限公司 | Solar electronic paper display device |
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| KR101850176B1 (en) * | 2014-10-17 | 2018-04-18 | 주식회사 엘지화학 | Variable battery and portable electronic equipment comprising the same |
| KR102524429B1 (en) | 2017-10-31 | 2023-04-20 | 엘지디스플레이 주식회사 | Transparent display apparatus |
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| JP2005266008A (en) * | 2004-03-16 | 2005-09-29 | Fuji Xerox Co Ltd | Image display medium and image display apparatus |
| JP2007256495A (en) * | 2006-03-22 | 2007-10-04 | Seiko Epson Corp | Electrophoresis device, electronic apparatus, and method for driving electrophoresis device |
| KR20100132362A (en) * | 2009-06-09 | 2010-12-17 | 한국기계연구원 | Display device with solar cell |
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| CN112951167A (en) * | 2021-01-26 | 2021-06-11 | 深圳天德钰科技股份有限公司 | Electrophoretic display and driving method thereof |
| CN112951167B (en) * | 2021-01-26 | 2022-09-20 | 深圳天德钰科技股份有限公司 | Electrophoretic display and driving method thereof |
| WO2025148903A1 (en) * | 2024-01-08 | 2025-07-17 | 汉朔科技股份有限公司 | Solar electronic paper display device |
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