ORGANIC LIGHT EMITTING DIODE AND MONOLITHICALLY INTEGRATED THIN-FILM TRANSISTORS

    公开(公告)号:JP2000029403A

    公开(公告)日:2000-01-28

    申请号:JP14899099

    申请日:1999-05-28

    Abstract: PROBLEM TO BE SOLVED: To obtain an economical and good efficient device by monolithically integrating thin-film transistors(TFTs) with light emitting diodes(LEDs) and forming active layers of the LEDs and the semiconductor layers of the TFTs of org. materials. SOLUTION: The monolithically integrated org. TFTs and org. LEDs 200 are formed by first depositing a conductive layer on transparent substrate 205. The layer acts both as the gate 215 of the electric field effect (TFT) (FET) 201 and the anode 216 of the LED 202. Next, a dielectric layer 220 of the FET 201 is formed. After the conductive layer and dielectric layer 220 are formed on the substrate 205, the source electrode 225 and drain electrode 226 of the FET 201 or the semiconductor material 230 of the FET is deposited. Since the semiconductor material 230 is not used as a hole transfer body, the layer of a hole transfer body 235 is formed in order to obtain necessary characteristics. An electron transfer body/emitter layer 240 is deposited on the hole transfer body 235 and in succession, a cathode 245 is deposited to complete the LED 202.

    METHOD FOR ENCAPSULATION OF SEMICONDUCTOR DEVICE

    公开(公告)号:JP2002314093A

    公开(公告)日:2002-10-25

    申请号:JP2002043700

    申请日:2002-02-20

    Abstract: PROBLEM TO BE SOLVED: To provide an encapsulation material which can be deposited at a lower temperature and provides required encapsulation characteristics. SOLUTION: A method for encapsulating semiconductor devices includes a step in which an encapsulation material is deposited on a semiconductor device in such an environment as to enhance the performance of the semiconductor device. The encapsulation material is selected from a group of materials including an inorganic dielectric material, organic-inorganic composite material, inorganic polymer, silicon polymer, encapsulation material of laminated metal polymer, and multiplayer structures of any of these materials. The encapsulation material is deposited using a gas flow composed of silane and nitrogen and an ammonia gas flow. More specifically, the encapsulation material is SiOx and SiNx (X is between 0.1 and 10 inclusive).

    OPTICAL DIFFRACTION GRATING DEVICE HAVING ADJUSTABLE CHIRP

    公开(公告)号:JP2000137197A

    公开(公告)日:2000-05-16

    申请号:JP30793299

    申请日:1999-10-29

    Abstract: PROBLEM TO BE SOLVED: To obtain an optical diffraction grating device having an adjustable chirp. SOLUTION: The optical waveguide diffraction grating having an adjustable chirp includes a waveguide diffraction grating thermally brought into contact with an electrically controllable heat converting substrate whose temperature is changed along the length of the diffraction grating (A). The heat converting substrate can generate heat on a fiber, or remove heat from the fiber, and temperature slope can be generated along the diffraction grating. In an execution example, the heat converting substrate is constituted as a resistance film whose local resistance is changed along the length of the diffraction grating (B). Currents running through the thin film can generate the temperature slope along the diffraction grating almost proportional to the local resistance of the thin film, and the size of the chirp can be adjusted by the currents. Thus, this obtained device can be made simple, compact, and efficiently power.

    OPTICAL COMMUNICATION SYSTEM EQUIPMENT WITH AUTOMATIC DISTRIBUTION COMPENSATING MODULE

    公开(公告)号:JP2000244394A

    公开(公告)日:2000-09-08

    申请号:JP2000040395

    申请日:2000-02-18

    Abstract: PROBLEM TO BE SOLVED: To optimize the performance of an optical communication system by providing a data maintenance monitor, and adjusting dispersion elements so that the performance of this system is optimized, and deciding the distribution of grating according to the strength of added currents, detecting the maintenance of transmitted data and controlling the currents to be added to the grating. SOLUTION: Each automatic distribution compensating module 20 is provided with a variable distribution compensator 30, a data maintenance monitor 31 and a feedback network 32, and the monitor 31 adjusts the distribution compensator 30 through the feedback network 32 so that the performance of this system is optimized. Part of a signal on a transmission fiber path 11 is sampled, for example, by a tap 34, and this signals is analyzed so that the scale of the maintenance of the transmitted data can be obtained, and a feedback signal for controlling a variable distribution compensation grating 33 can be obtained from this scale. In the variable distribution compensator 30, a signal light from the transmission fiber 11 is directed to the variable distribution compensation grating 33.

    OPTICAL WAVEGUIDE GRATING DEVICE HAVING ADJUSTABLE OPTICAL SPACING PROFILE

    公开(公告)号:JP2002277650A

    公开(公告)日:2002-09-25

    申请号:JP2001081811

    申请日:2001-03-22

    Abstract: PROBLEM TO BE SOLVED: To provide an optical waveguide grating device having an adjustable optical spacing profile. SOLUTION: The optical waveguide grating having the adjustable optical spacing profile is provided with a waveguide grating coming into thermal contact with one or more resistive film coatings. The coating is extended along the length direction of the grating and its local resistance is changed in accordance with the length of the grating. Since a plurality of overlapping coatings are chosen in a certain example, the variation values of respective resistance values are made different and various heat generation profiles are influenced by the control of each individual coating. Different heat generating profiles successively and proportionally change the geometric spacing and local refractive index of the grating along the length direction of the grating, so that a required adjustable optical spacing profile can be provided. In another example, a resistance film is used on the basis of heating variation to be suddenly or periodically changed.

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