摘要:
A data transmission system for a LAN has a number of nodes connected in a ring or bus network. Each node has a transmit-receive circuit, a RAM, a CPU, a self node address switch, and an interface control. The frequency of adjacent node retrieval processing operation is set to be high in an initial period after the node is powered, and is set to be low thereafter. A new node added to the network can obtain a communication right within a relatively short period of time. Each node or the system can also have a maximum node address switch to allow the CPU to discriminate the current maximum address within the network. A node to be assigned with the communication right next can be discriminated fast. First and second downstream node addresses can also be stored in the RAM to allow the node to assign the communication right to the second downstream node in case the first downstream node has failed due to power failure or the like. Node address management can be performed by adding a sending origin address to the communication right, so that each node can discriminate the system configuration.
摘要:
An electromagnetic clutch with an improved rotor, and a method of manufacturing the rotor includes the steps of: (a) forming a cup-shaped blank with a generally cylindrical flange wall and a bottom plate by bending a piece of sheet metal; (b) forming at least one approximately V-shaped groove in the blank flange wall by a pressing operation; (c) forming a final V-shaped groove by applying a roller working operation to the approximately V-shaped groove; and (d) welding an inner cylindrical member to a radial inner surface of the bottom plate of the cup-shaped blank.
摘要:
In a process for producing a glycollic acid ester by the vapor phase catalytic hydrogenation of an oxalic acid diester in the presence of a catalyst and hydrogen gas, the improvement wherein the oxalic acid diester in the vaporous state is contacted with hydrogen gas in the presence of a catalyst composed of Ag or Pd supported on a solid carrier at a temperature of from about 120.degree. C. to about 300.degree. C.
摘要:
Thin film transistors including an oxide semiconductor containing indium, gallium, and zinc are easily arranged in a matrix over a large substrate and have small characteristic variations. With amplifier circuits and driver circuits of display elements which include the thin film transistors including an oxide semiconductor containing indium, gallium, and zinc with small characteristic variations, intensity distribution of light received by the photodiodes arranged in a matrix is converted into electrical signals with high reproducibility and output, and the display elements arranged in a matrix can be uniformly driven.
摘要:
An object is to provide a convenient display device which consumes sufficiently small amount of power and a method for driving such a display device. The display device can be in an off state with a still image displayed in a still image display mode in which a pixel electrode and a common electrode which are for applying a voltage to the display element are brought into a floating state so that a voltage applied to the display element is held, and a still image is displayed without further supply of a potential. The display device is put to an off state with a desired image displayed in the still image display mode, whereby the display device can have a higher level of security and can be more convenient.
摘要:
The present invention provides a light-emitting device comprising a first light-emitting element that emits red light, a second light-emitting element that emits green light, a third light-emitting element that emits blue light, and a color filter, where the color filter comprises a first coloring layer that selectively transmits red light, a second coloring layer that selectively transmits green light, and a third coloring layer that selectively transmits blue light, the first to third light-emitting elements respectively correspond to the first to third coloring layers, wherein each of the first to third light-emitting elements has a first electrode, an electroluminescent layer on the first electrode, and a second electrode on the electroluminescent layer, and wherein the electroluminescent layer includes a layer in contact with the second electrode, and a metal oxide or a benzoxazole derivative is included in the layer in contact with the second electrode.
摘要:
A fluorescent tube type LED lamp includes an elongated lamp body that has a largest dimension in a longitudinal direction, a light source substrate mounted on the lamp body, a light transmissive cover attached to the lamp body, and an LED unit mounted on the light source substrate such that the LED unit extends in the longitudinal direction of the lamp body. The LED unit includes a plurality of LED chips mounted on the light source substrate, and a transparent encapsulant encapsulating the LED chips. The encapsulant is molded such that the encapsulant is raised from the light source substrate. The LED unit radiates light from an entire surface of the encapsulant in an angular range including a region lateral to the lamp body.
摘要:
A work transfer device is capable of moving a carriage in any direction and easily changes processes even with a simple configuration. The work transfer device includes a frame having a slit in a transfer direction, a ribbon body stored in the frame such that an upper portion is guided by the slit, a carriage coupling part connected to an upper end of the ribbon body and protruding from an upper side of the frame, a driving part feeding power to move the ribbon body in the transfer direction, and a tool carriage, which has a support part supporting a work W and has a coupling part coupled to the carriage coupling part, travelling on the frame.
摘要:
To provide a method by which a semiconductor device including a thin film transistor with excellent electric characteristics and high reliability is manufactured with a small number of steps. After a channel protective layer is formed over an oxide semiconductor film containing In, Ga, and Zn, a film having n-type conductivity and a conductive film are formed, and a resist mask is formed over the conductive film. The conductive film, the film having n-type conductivity, and the oxide semiconductor film containing In, Ga, and Zn are etched using the channel protective layer and gate insulating films as etching stoppers with the resist mask, so that source and drain electrode layers, a buffer layer, and a semiconductor layer are formed.
摘要:
To provide a light-emitting element or a light-emitting device in which power is not consumed wastefully even if a short-circuit failure occurs. The present invention focuses on heat generated due to a short-circuit failure which occurs in a light-emitting element. A fusible alloy which is melted at temperature T2 by heat generated due to the short-circuit failure when the short-circuit failure occurs is used for at least one of a pair of electrodes in a light-emitting element, and a layer containing an organic composition which is melted at temperature T1 is formed on a surface of the electrode opposite to a surface facing the other electrode. The present inventors have reached a structure in which the temperature T2 is lower than temperature T3 at which the light-emitting element is damaged and the temperature T1 is lower than the temperature T2, and this structure can achieve the objects.