摘要:
A novel field-effect transistor is provided which employs an amorphous oxide. In an embodiment of the present invention, the transistor comprises an amorphous oxide layer containing electron carrier at a concentration less than 1×10−18/cm3, and the gate-insulating layer is comprised of a first layer being in contact with the amorphous oxide and a second layer different from the first layer.
摘要:
There is provided an organic electroluminescence display includes a lower electrode formed on a substrate, a device separation film formed on the lower electrode, an organic compound layer formed on the device separation film and including a light emission layer, and an upper electrode formed on the organic compound layer, wherein the device separation film is a polyimide film having an imidation ratio in a range of 65% or more to less than 90%. The display is expected to have longer operating life.
摘要:
An organic EL display apparatus has a driving circuit. In the driving circuit, the source and drain of a driving transistor and the anode and cathode of an organic EL device are connected in series between voltage sources. A current passes between the source and drain of the driving transistor and between the anode and cathode of the organic EL device in accordance with a voltage between the gate and source of the driving transistor. Consequently, the organic EL device emits light. In order to store the voltage in the capacitor, a constant voltage source is connected to the gate of the driving transistor and the above-described series connection is disconnected at the source of the driving transistor and connected to a signal source. Then, a current signal output from the signal source passes between the source and drain of the driving transistor, and charges are stored in a capacitor in accordance with the current signal.
摘要:
A liquid-phase growth apparatus for growing a crystal on a substrate includes a crucible containing a solution that contains a raw material for forming the crystal, and a substrate holder for vertically holding the substrate. The substrate holder includes connectors, a receiving component, and a push component. The receiving component and the push component are opposite to each other and are connected by the connectors. The push component holds an upper portion of the substrate while the receiving component holds a lower portion of the substrate. The substrate holder containing the vertically held substrate is dipped into the solution. The receiving component ascends with buoyancy in the solution contained in the crucible, so that the substrate is now held securely and prevented from cracking due to thermal expansion.
摘要:
A solar cell is produced by dipping a multicrystalline silicon substrate 28 in a solution 24 containing silicon, growing a silicon layer on the substrate 28 while decreasing with time the temperature drop rate of the solution during the dipping of the substrate in the solution, and forming a pn junction in the silicon layer. Thereby, there is provided a silicon layer production method that can form a thick layer while restraining the degree of roughness, whereby a low-cost, multicrystalline-silicon solar cell production method is provided that realizes both a large current and a high FF.
摘要:
For the purpose of being capable of performing direct inter-handset communications while maintaining inter-handset communications via a base unit, smoothly making a transition from inter-handset communications via a base unit to direct inter-handset communications, and switching to inter-handset communications via a base unit without releasing the communications even in case direct inter-handset communications cannot be established, a local handset includes a direct inter-handset communications controller and a direct inter-handset communications transition controller for making control to establish direct inter-handset communications while maintaining communications with a base unit as well as transmitting control channels for direct inter-handset communications in vacant slots in the receiving time zones for communications with the base unit, while a distant handset includes a direct inter-handset communications controller and a direct inter-handset communications transition controller for scanning control channels for direct inter-handset communications in the time zones other than the slots occupied by communications with the base unit 100.
摘要:
A liquid-phase growth apparatus for growing a crystal on a substrate includes a crucible containing a solution that contains a raw material for forming the crystal, and a substrate holder for vertically holding the substrate. The substrate holder includes connectors, a receiving component, and a push component. The receiving component and the push component are opposite to each other and are connected by the connectors. The push component holds an upper portion of the substrate while the receiving component holds a lower portion of the substrate. The substrate holder containing the vertically held substrate is dipped into the solution. The receiving component ascends with buoyancy in the solution contained in the crucible, so that the substrate is now held securely and prevented from cracking due to thermal expansion.
摘要:
A liquid-phase growth apparatus for growing a crystal on a substrate includes a crucible containing a solution that contains a taw material for forming the crystal, and a substrate holder for vertically holding the substrate. The substrate holder includes connectors, a receiving component, and a push component. The receiving component and the push component are opposite to each other and are connected by the connectors. The push component holds an upper portion of the substrate while the receiving component holds a lower portion of the substrate. The substrate holder containing the vertically held substrate is dipped into the solution. The receiving component ascends with buoyancy in the solution contained in the crucible, so that the substrate is now held securely and prevented from cracking due to thermal expansion.
摘要:
A liquid-phase growth method for immersing a polycrystalline substrate in a melt in a crucible wherein crystal ingredients are dissolved, thereby growing poly crystals upon the substrate, comprises a first step for growing poly crystals to a predetermined thickness, and a second step for melting back a part of the poly crystals grown in the first step in the melt, wherein the relative position between the substrate and melt is changed between the first step and second step, bringing melt with different temperature into contact with the polycrystalline surface. The obtained poly crystals have properties rivaling those of poly crystals used in conventional solar cells but with little risk of trouble such as line breakage of grid electrodes in application to solar cells, and can be obtained in great quantities at low costs.
摘要:
To cause a crack at a fixed position in a separation layer, a method of separating a composite member includes the steps of forming a separation layer inside a composite member, forming inside the separation layer a stress riser layer in which an in-plane stress has concentratedly been produced to an extent that does not cause separation by the in-plane stress, and enlarging the in-plane stress to cause a crack in the stress riser layer, thereby separating the composite member.