WO2010016701A2 - 송신장치, 표시장치 및 원격 신호 입력 시스템 - Google Patents
송신장치, 표시장치 및 원격 신호 입력 시스템 Download PDFInfo
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- WO2010016701A2 WO2010016701A2 PCT/KR2009/004328 KR2009004328W WO2010016701A2 WO 2010016701 A2 WO2010016701 A2 WO 2010016701A2 KR 2009004328 W KR2009004328 W KR 2009004328W WO 2010016701 A2 WO2010016701 A2 WO 2010016701A2
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- Prior art keywords
- signal
- signal light
- light
- laser
- sensors
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- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 8
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 230000005684 electric field Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
- H04Q9/02—Automatically-operated arrangements
Definitions
- Embodiments relate to a transmitter, a display and a remote signal input system.
- Embodiments provide a remote signal input system capable of remotely inputting a signal on a screen of a display device, and a display device and a transmitter included therein.
- a remote signal input system includes a transmitter for generating signal light; And a display panel including a plurality of sensors for sensing the signal light.
- the display device includes a display panel including a plurality of sensors for sensing the signal light generated from the transmission device; And a detector configured to receive a sensing signal output from the sensors and detect a signal transmitted from the transmitter.
- the transmission apparatus includes a light source for generating signal light; And a driving unit for driving the light source to form the signal light.
- the signal light emitted from the transmitting device according to the embodiment is irradiated to a predetermined position of the display panel.
- the electrical signal by the signal light is sensed through sensors corresponding to the irradiated position among the sensors included in the display panel, and the display device according to the embodiment may receive the irradiated position.
- the remote signal input system enables the position signal to be remotely input to the display device.
- a laser modulated with signal light can be used to prevent interference by external light and / or backlight light.
- the visible light when used as the signal light, the user can visually identify the position where the signal is input.
- FIG. 1 is a perspective view showing a remote signal input system according to an embodiment.
- FIG. 2 is a circuit diagram illustrating a transmitter according to an embodiment.
- FIG. 3 is a waveform diagram illustrating a waveform of a modulated laser.
- FIG. 4 is a plan view illustrating pixels of a display device according to an exemplary embodiment.
- FIG. 5 is a circuit diagram illustrating a part of a display panel according to an exemplary embodiment.
- FIG. 6 is a cross-sectional view illustrating a cross section of a display panel according to an exemplary embodiment.
- FIG. 7 is a circuit diagram illustrating a transmitter according to another embodiment.
- FIG. 8 is a plan view illustrating pixels of a liquid crystal panel according to another exemplary embodiment.
- FIG. 9 is a cross-sectional view illustrating a cross section of a display panel according to another exemplary embodiment.
- each panel, member, part, film, substrate, or electrode is formed on or under the “on” of each panel, member, part, film, substrate, or electrode.
- “in” and “under” includes both those that are formed “directly” or “indirectly” through other components.
- the criteria for the upper or lower parts of each component will be described with reference to the drawings. The size of each component in the drawings may be exaggerated for description, and does not mean a size that is actually applied.
- 1 is a perspective view showing a remote signal input system according to an embodiment.
- 2 is a circuit diagram illustrating a transmitter according to an embodiment.
- 3 is a waveform diagram illustrating a waveform of a modulated laser.
- 4 is a plan view illustrating pixels of a display device according to an exemplary embodiment.
- 5 is a circuit diagram illustrating a part of a display panel according to an exemplary embodiment.
- 6 is a cross-sectional view illustrating a cross section of a display panel according to an exemplary embodiment.
- a remote signal input system includes a transmitter 10 and a display 20.
- Signal light is emitted from the transmitter 10 and incident on the display panel 400.
- the display device 20 may sense the signal light and receive a position to which the signal light is irradiated.
- the signal light is a modulated laser ML.
- the transmission device 10 includes a laser diode 100, a driver 200, a first button 310, and a second button 320.
- the laser diode 100 generates a visible light laser.
- the laser diode 100 is driven by the driver 200.
- the driver 200 drives the laser diode 100.
- the driver 200 includes a power supply 210, an oscillator 220, a driver 230, a switching device SW, and a transistor TR.
- the power supply unit 210 supplies power to the laser diode 100.
- the power supply unit 210 selectively supplies power to the laser diode 100 by the switching element SW and the transistor TR.
- the oscillator 220 generates a clock signal having a constant frequency as an internal reference.
- the clock signal is supplied to the driver 230.
- the driver 230 generates a driving signal for driving the transistor TR based on the clock signal. In this case, the driver 230 is turned on or turned off by a signal input by the first button 310.
- the switching element SW is turned on or off by a signal input by the second button 320. That is, when the switching device SW is turned off, the laser diode 100 is turned off. Accordingly, no laser is generated in the laser diode 100.
- the transistor TR quickly repeats the turn-on and turn-off operations by a driving signal applied from the driver 230.
- the laser diode 100 is quickly turned on or off and generates a modulated laser ML having a predetermined frequency.
- the frequency of the modulated laser ML may be about 10 to 20 MHz.
- the first button 310 turns the driver 230 on or off by a user's manipulation.
- the second button 320 turns on or off the switching element SW by a user's manipulation.
- the driver 230 when the driver 230 is turned on through the first button 310, the driver 230 rapidly turns on and off the transistor TR. Accordingly, the laser diode 100 generates a modulated laser ML.
- the modulated laser ML may have a waveform in which a laser having a predetermined intensity and a laser having an intensity of 0 are repeated.
- the transmission apparatus 10 may determine whether the modulated laser ML is generated.
- the transmitting device 10 may determine whether the laser is generated.
- the display device 20 displays an image and receives a signal from the transmitting device 10 through a screen on which the image is displayed. In detail, the display device 20 receives the signal light emitted from the transmission device 10 through the screen.
- the display device 20 receives a modulated laser ML emitted from the transmission device 10 through the screen.
- the display device 20 includes a display panel 400 and a detector 500.
- the display device 20 may further include elements for driving the display panel 400.
- the display panel 400 displays an image and includes sensors 410 for sensing the modulated laser ML inside.
- the display panel 400 has a plate shape.
- the display panel 400 is composed of a plurality of pixels P, and the pixel P is composed of three sub pixels SP.
- two sensors 410 may be disposed in one pixel, and one or two sensors may be disposed in a plurality of pixels. That is, the sensors 410 may be disposed in some of the pixels P.
- the sensors 410 may be photo diodes or photo TFTs 410 that receive light to generate current.
- the display panel 400 includes an upper substrate 420, a lower substrate 430, a liquid crystal layer 450, a gate 411 wiring GLn, a data wiring DLn, and switching.
- Thin film transistor hereinafter referred to as switching TFT (SW TFT)
- pixel electrode and common electrode CLC
- first power line VL1, second power line VL2, lead-out line RoL CLC
- photo thin film transistor TFT 410 is included.
- the upper substrate 420 and the lower substrate 430 face each other, are transparent, and are insulators.
- Examples of the material used as the upper substrate 420 and the lower substrate 430 may include glass, quartz or plastic.
- the liquid crystal layer 450 is interposed between the upper substrate 420 and the lower substrate 430.
- the liquid crystal layer 450 aligns and adjusts the intensity of light passing through the electric field formed between the pixel electrode and the common electrode CLC.
- the gate 411 wiring GLn is interposed between the upper substrate 420 and the lower substrate 430. In more detail, it is disposed on the lower substrate 430. A plurality of the gate 411 lines GLn extend in parallel in the first direction. A gate 411 signal for switching the switching TFT (SW TFT) is applied to the switching TFT (SW TFT) through the gate 411 wiring GLn.
- SW TFT switching TFT
- the data lines DLn cross the gate 411 lines GLn, and a plurality of data lines DLn extend in parallel with each other in a second direction.
- the data signal is applied to the pixel electrode in accordance with the operation of the switching TFT (SW TFT) through the data line DLn.
- SW TFT switching TFT
- the switching TFT (SW TFT) is disposed in an area where the data lines DLn and the gate 411 line GLn cross each other.
- the switching TFT (SW TFT) is turned on or off by the gate 411 signal. Accordingly, the switching TFT (SW TFT) selectively applies the data signal to the pixel electrode.
- the pixel electrode and the common electrode CLC are interposed between the upper substrate 420 and the lower substrate 430.
- the pixel electrode and the common electrode CLC form an electric field by the data signal and the common voltage VCOM. In this case, the formed electric field aligns the liquid crystal layer 450.
- the first power line VL1 is interposed between the upper substrate 420 and the lower substrate 430.
- a plurality of first power supply lines VL1 extend side by side.
- the first power supply line VL1 supplies a bias voltage to the photo TFT 410.
- the first power line VL1 may be disposed in parallel with the gate 411 line GLn and may be formed on the same layer as the gate 411 line GLn. That is, the first power line VL1 may be formed simultaneously with the gate 411 line GLn.
- the second power line VL2 extends in parallel with the first power line VL1 to provide the photo TFT 410 with an off level voltage provided from the outside.
- the photo TFT 410 is formed in a region defined by the first power line VL1 and the second power line. In more detail, the photo TFT 410 may be formed in an area where the first power line VL1 and the second power line cross each other.
- the photoTFT 410 includes a source 414, a drain 415, an active layer 412, and a gate 411.
- an ohmic contact layer 413 is formed between the active layer 412 and the source 414 and between the active layer 412 and the drain 415.
- the source 414 is connected to the first power line VL1, and the drain 415 is connected to the lead-out line RoL. In addition, the source 414 and the drain 415 are spaced apart from each other.
- the active layer 412 is disposed under the source 414 and the drain 415.
- the gate 411 is disposed under the active layer 412 and is connected to the second power line VL2.
- the photo TFT 410 provides a photo current to the readout wiring RoL through the drain 415.
- the photocurrent is a kind of light sensing signal and is information corresponding to the corresponding position (X, Y).
- the lead-out wire RoL extends in a second direction, and outputs a light sensing signal output through the drain 415 to the detector 500.
- An off level voltage is applied to the gate 411, and a bias level voltage is applied to the source 414.
- a light sensing signal is output through the drain 415.
- the bias voltage is for detecting photocurrent flowing through the active layer 412 formed in an arbitrary pixel P.
- the photocurrent through the active layer 412 is not generated even when the bias voltage is applied to the source 414.
- the photo TFT 410 may sense signal light emitted from the transmitter 10, that is, the modulated laser ML. That is, the photo TFT 410 is a sensor for sensing the modulated laser ML.
- the detector 500 receives and analyzes an optical sensing signal output from the lead-out wire RoL. In addition, the detector 500 detects an optical sensing signal (hereinafter referred to as an input signal) formed by the modulated laser ML.
- an optical sensing signal hereinafter referred to as an input signal
- the input signal has a frequency corresponding to the frequency of the modulated laser ML, and the detector 500 may detect the input signal by analyzing the frequency of the light sensing signal.
- the input signal is a signal transmitted from the transmitting device 10 to the display device 20.
- the detector 500 detects the input signal from the light detection signal.
- the detector 500 may detect the input signal and analyze the positions X and Y of the photo TFTs 410 corresponding to the region to which the modulated laser ML is irradiated.
- the detector 500 may detect the positions X and Y to which the modulated laser ML is irradiated.
- a process of inputting a signal to the display device 20 by a remote signal input system is as follows.
- the user turns on the switching device SW by the second button 320.
- the laser diode 100 generates a laser.
- the laser diode 100 generates a visible light laser.
- the user irradiates a laser to a position (X, Y) on the screen where the user wants to input a signal by using the transmitter 10. Since the laser diode 100 generates a visible light laser, the user may visually identify the position (X, Y) to which the laser is irradiated.
- the user turns on the driver 230 by using the first button 310.
- the laser diode 100 generates the modulated laser ML.
- the sensors 410 that is, the photo TFT 410 senses the modulated laser ML and inputs the input signal to the detector 500.
- the detection unit 500 may detect the input signal and recognize a position to which the modulated laser ML is irradiated.
- the user can remotely input a signal to a desired position (X, Y) of the display device 20 by using the transmission device 10.
- the remote signal input system uses the modulated laser ML, malfunctions caused by light emitted from external light or a backlight can be reduced.
- FIG. 7 is a circuit diagram illustrating a transmitter according to another embodiment.
- 8 is a plan view illustrating pixels of a liquid crystal panel according to another exemplary embodiment.
- the transmitter and the sensors will be further described.
- the transmitter 10 may include a first laser diode 110, a second laser diode 120, a first driver 201, a second driver 202, a first button 310 and a first laser diode. Two buttons 320.
- the first laser diode 110 generates an infrared laser.
- the second laser diode 120 generates a visible light laser.
- the first driver 201 drives the first laser diode 110
- the second driver 202 drives the second laser diode 120.
- the first driver 201 may include a first power supply 211 for supplying power to the first laser diode 110, a first oscillator 221 for generating a first clock signal having a constant frequency as an internal reference, and the The first driver 231 for driving the first transistor TR1 based on the first clock signal and the first transistor TR1 for repeating turn-on and turn-off operations by the first driver 231 are performed. Include.
- the first button 310 may turn on or turn off the first driver 201. In more detail, the first button 310 may turn on or turn off the first driver 231.
- the second driving unit 202 is a second power supply unit 212 for supplying power to the second laser diode 120, a second oscillator 222 for generating a second clock signal of a constant frequency as an internal reference, A second driver 232 for driving the second transistor TR2 based on the second clock signal and a second transistor TR2 for repeating turn-on and turn-off operations by the second driver 232 are performed. Include.
- first power supply unit 211 and the second power supply unit 212 may be identical to each other, and the first oscillator 221 and the second oscillator 222 may be identical to each other.
- the second button 320 may turn on or turn off the second driver 202. In more detail, the second button 320 may turn on or turn off the second driver 232.
- the transmitter 10 may generate a modulated visible laser and a modulated infrared laser.
- the display panel 400 includes a first sensor 411 and a second sensor 412.
- the first sensor 411 senses light in the visible light band
- the second sensor 412 senses light in the infrared band.
- the first sensor 411 senses the modulated visible light laser
- the second sensor 412 senses the modulated infrared laser
- the first sensor 411 and the second sensor 412 may be formed to correspond to one pixel P.
- the first input signal formed by the first sensor 411 by the modulated visible laser and the second input signal formed by the second sensor 412 by the modulated visible laser are detected by the detector 500. Is entered.
- the detector 500 may detect positions of sensors to which the first input signal and the second input signal are input.
- the remote signal input system may simultaneously input two or more signals to the display device 20.
- a position signal is input to the display device 20 using the modulated visible laser
- a control signal for controlling the display device 20 is input using the modulated infrared laser. can do.
- a visible light laser modulated with signal light and a modulated infrared laser are used.
- modulated lasers with different frequencies may be used.
- FIG. 9 is a cross-sectional view illustrating a cross section of a display panel according to another exemplary embodiment.
- the infrared band pass filter will be further described.
- An infrared red band pass filter (hereinafter, referred to as an IR filter 460) is disposed inside the display panel, and the IR filter 460 is disposed on the sensor, and more specifically, on the photo TFT 410. That is, the IR filter 460 is disposed corresponding to the photo TFT 410.
- the IR filter 460 filters the light passing through and passes only the light in the infrared band.
- Examples of materials that may be used as the IR filter 460 include calcium fluoride (CaF 2 ) or alumina (Al 2 O 3 ).
- the laser in the visible light band irradiated from the transmitter 10 passes only the laser in the infrared band by the IR filter 460.
- the visible light laser may be sensed using sensors that sense infrared rays.
- the display device 20 may sense both a visible light laser and an infrared laser by using sensors that sense infrared light.
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- General Physics & Mathematics (AREA)
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- Position Input By Displaying (AREA)
- Optical Communication System (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims (16)
- 신호 광을 발생시키는 송신장치; 및상기 신호 광을 센싱하는 다수 개의 센서들을 포함하는 표시패널을 포함하는 원격 신호 입력 시스템.
- 제 1 항에 있어서, 상기 신호 광은 모듈레이션된 레이저인 원격 신호 입력 시스템.
- 제 1 항에 있어서, 상기 송신장치는 제 1 신호 광 및 제 2 신호 광을 발생시키는 원격 신호 입력 시스템.
- 제 3 항에 있어서, 상기 제 1 신호 광은 모듈레이션된 가시광선 레이저이고, 상기 제 2 신호광은 모듈레이션된 적외선 레이저인 원격 신호 입력 시스템.
- 제 1 항에 있어서, 상기 표시패널은제 1 방향으로 배치되는 전원배선들; 및상기 전원배선들에 교차하며 배치되는 다수 개의 리드아웃 배선들을 포함하며,상기 센서들은 상기 전원배선들 및 상기 리드아웃 배선들이 교차하는 영역들에 배치되는 포토 박막트랜지스터인 원격 신호 입력 시스템.
- 송신장치로부터 발생하는 신호 광을 센싱하는 다수 개의 센서들을 포함하는 표시패널; 및상기 센서들로부터 출력되는 센싱 신호를 입력받아, 상기 송신장치로부터 송신된 신호를 검출하는 검출부를 포함하는 표시장치.
- 제 6 항에 있어서, 상기 표시패널은상기 센서들에 각각 전원을 공급하며, 서로 나란히 배치되는 전원 배선들; 및상기 센서들로부터 신호를 출력하며, 상기 전원 배선들과 교차하는 출력 배선들을 포함하는 표시장치.
- 제 6 항에 있어서, 상기 신호 광은 모듈레이션된 레이저인 표시장치.
- 제 8 항에 있어서, 상기 센싱 신호는 상기 신호 광의 모듈레이션 주파수에 대응하는 주파수를 가지는 표시장치.
- 제 6 항에 있어서, 상기 신호 광은 주 파장 영역 서로 다른 제 1 신호 광 및 제 2 신호 광을 포함하며,상기 센서들은 상기 제 1 신호 광을 센싱하기 위한 제 1 센서 및 상기 제 2 신호 광을 센싱하기 위한 제 2 센서를 포함하는 표시장치.
- 제 10 항에 있어서, 상기 제 1 신호 광은 가시광선 레이저이고, 상기 제 2 신호 광은 적외선 레이저인 표시장치.
- 제 6 항에 있어서, 상기 센서 상에 배치되는 소정의 파장 영역의 광을 통과시키는 필터를 포함하는 표시장치.
- 신호 광을 발생시키는 광원; 및상기 신호 광을 형성하기 위해서, 상기 광원을 구동하는 구동부를 포함하는 송신장치.
- 제 13 항에 있어서, 상기 광원은 레이저 다이오드이며, 상기 신호 광은 모듈레이션된 레이저인 송신장치.
- 제 14 항에 있어서, 상기 광원은 가시광선 레이저를 발생시키는 제 1 광원 및 적외선 레이저를 발생시키는 제 2 광원을 포함하는 송신장치.
- 제 14 항에 있어서, 상기 구동부는 선택적으로 모듈레이션된 레이저를 발생시키도록 상기 광원을 구동하는 송신장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US13/056,885 US20110134035A1 (en) | 2008-08-06 | 2009-08-03 | Transmitting Apparatus, Display Apparatus, and Remote Signal Input System |
JP2011522003A JP2011530852A (ja) | 2008-08-06 | 2009-08-03 | 送信装置、表示装置及び遠隔信号入力システム |
CN2009801349765A CN102144404A (zh) | 2008-08-06 | 2009-08-03 | 发送装置、显示装置和远程信号输入系统 |
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KR10-2008-0077134 | 2008-08-06 | ||
KR1020080077134A KR101020903B1 (ko) | 2008-08-06 | 2008-08-06 | 송신장치, 표시장치 및 원격 신호 입력 시스템 |
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WO2010016701A2 true WO2010016701A2 (ko) | 2010-02-11 |
WO2010016701A3 WO2010016701A3 (ko) | 2010-04-22 |
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PCT/KR2009/004328 WO2010016701A2 (ko) | 2008-08-06 | 2009-08-03 | 송신장치, 표시장치 및 원격 신호 입력 시스템 |
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US (1) | US20110134035A1 (ko) |
JP (1) | JP2011530852A (ko) |
KR (1) | KR101020903B1 (ko) |
CN (1) | CN102144404A (ko) |
TW (1) | TW201009655A (ko) |
WO (1) | WO2010016701A2 (ko) |
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TWI485580B (zh) * | 2011-08-24 | 2015-05-21 | Pixart Imaging Inc | 光學定位系統和光學定位方法 |
CN102968210A (zh) * | 2012-11-02 | 2013-03-13 | 京东方科技集团股份有限公司 | 显示装置、遥控系统及遥控方法 |
CN107068081A (zh) * | 2017-03-01 | 2017-08-18 | 京东方科技集团股份有限公司 | 一种显示方法和显示装置 |
CN111462667A (zh) * | 2019-01-22 | 2020-07-28 | 咸阳彩虹光电科技有限公司 | 一种用于显示面板的驱动方法和驱动装置 |
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2009
- 2009-08-03 US US13/056,885 patent/US20110134035A1/en not_active Abandoned
- 2009-08-03 CN CN2009801349765A patent/CN102144404A/zh active Pending
- 2009-08-03 JP JP2011522003A patent/JP2011530852A/ja active Pending
- 2009-08-03 WO PCT/KR2009/004328 patent/WO2010016701A2/ko active Application Filing
- 2009-08-05 TW TW098126316A patent/TW201009655A/zh unknown
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KR100669270B1 (ko) * | 2003-08-25 | 2007-01-16 | 도시바 마쯔시따 디스플레이 테크놀로지 컴퍼니, 리미티드 | 표시 장치 및 광전 변환 소자 |
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Also Published As
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TW201009655A (en) | 2010-03-01 |
US20110134035A1 (en) | 2011-06-09 |
KR101020903B1 (ko) | 2011-03-09 |
WO2010016701A3 (ko) | 2010-04-22 |
CN102144404A (zh) | 2011-08-03 |
KR20100018393A (ko) | 2010-02-17 |
JP2011530852A (ja) | 2011-12-22 |
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