摘要:
Disclosed are novel organic electroluminescent compounds and organic electroluminescent devices comprising the same.With good luminous efficiency and excellent life property, the disclosed organic electroluminescent compounds can be used to manufacture OLED devices having very good operation life.
摘要:
Provided are a novel organic electroluminescent compound and an organic electroluminescent device using the same.When used as a host material of an organic electroluminescent material of an OLED device, the organic electroluminescent compound disclosed herein exhibits good luminous efficiency and excellent life property as compared to the existing host material. Therefore, it may be used to manufacture OLEDs having very superior operation life.
摘要:
Provided are novel organic electroluminescent compounds, and organic electroluminescent devices comprising the same as electroluminescent material. Specifically, the organic electroluminescent compounds according to the present invention are represented by Chemical Formula (1): wherein, at least one substituent(s) among Ar1, Ar2, R6, R7, R8, R9, R10, R11, R12, R13, R14 and R15 represent(s) The organic electroluminescent compounds according to the present invention exhibit high luminous efficiency and excellent life property of material, so that an OLED having very good operation life can be manufactured therefrom. Further, the organic electroluminescent compound according to the present invention, when it is contained in an electroluminescent layer or a hole transport layer, lowers the operation voltage to result in noticeable decrease in power consumption, with exhibiting at least comparable luminous efficiency as compared to conventional OLED's.
摘要:
Provided are a novel organic electroluminescent compound and an organic electroluminescent device using the same as an electroluminescent material. The disclosed organic electroluminescent compound is represented by Chemical Formula 1: wherein Ar represents (C6-C60)arylene, (C3-C60)heteroarylene containing one or more heteroatom(s) selected from N, O and S, 5- or 6-membered heterocycloalkylene containing one or more heteroatom(s) selected from N, O and S, (C3-C60)cycloalkylene, adamantylene, (C7-C60)bicycloalkylene, (C2-C60)alkenylene, (C2-C60)alkynylene, (C1-C60)alkylenethio, (C6-C60)alkyleneoxy, (C6-C60)aryleneoxy, (C6-C60)arylenethio or
摘要:
Two hybrid message decoders for low-density parity-check (LDPC) codes are proposed. One decoder uses a posteriori probability ratio (APPR) and a posteriori probability difference (APPD), and the other decoder uses a logarithm a posteriori probability ratio (LAPPR) and a logarithm a posteriori probability difference (LAPPD) as hybrid message. Since the variable node and check node processing can be readily done using APPR and APPD, respectively, the proposed decoders have lower complexity than the conventional decoder that uses LAPPR only as a message.
摘要:
A display device testing system and a method for testing a display device using the same, which are capable of testing whether a display panel is defective or not according to a variation of the frame frequency and whether the driver module operates normally or not even at a voltage higher than a normal operation voltage. The display device testing system includes a display panel including a plurality of gate lines; a driver module including a gate driver unit for sequentially supplying a gate voltage to the plurality of gate lines in response to a test, vertical synchronization start signal; and a testing module for supplying a test vertical synchronization start signal to the driver module.
摘要:
Multi probe unit for an ultrasonic flaw detection apparatus, includes a plurality of probes contacting a surface of an object to be inspected; a plurality of connection members connecting two neighbor probes of the plurality of probes with each other; support members disposed on top portions of the plurality of probes so as to be spaced apart from the plurality of probes; and a pressing member connecting the plurality of probes with the support member and pressing the plurality of probes to the object to be inspected. According to the present invention, a plurality of probes smoothly contacts a flexural surface of an object to be inspected.
摘要:
Methods for annealing and pickling high manganese cold rolled steel sheets for use in automobiles and electronic panels in which a superior formability and high strengths are required are disclosed. That is, the invention provides a method for annealing a cold rolled high manganese steel sheet, in which, after cold-rolling a high manganese steel of Fe--Mn--Al--C series, the annealing atmospheric gas is adjusted during an annealing so as to minimize the thickness of a surface oxide layer, and an oxide layer removing agent such as aluminum nitride is spread into the oxide layer, so that the surface oxide layer can be easily removed. The invention further provides a method for pickling a cold rolled high manganese steel sheet, in which the surface oxide layer formed on the cold rolled high manganese steel sheet is uniformly removed with a mild aqueous solution of chloric acid, thereby improving the surface quality of the steel sheet, and saving the pickling facility cost. When the high manganese steel sheet is annealing at a temperature of 500.degree.-1000.degree. C., the annealing atmosphere consists of 100% of nitrogen or 50% or more of nitrogen and a balance of hydrogen. The high manganese steel sheet is pickled for 30-90 seconds within an aqueous solution of chloric acid having an acid concentration of 0.06-0.8 weight % and a temperature of 15.degree.-50.degree. C.
摘要:
A ring with a rotation and a lock function to selectively display multiple jewels is configured to comprise a first side including a first hole; a second side positioned in an opposite side to the first side and including a second hole that is smaller than the first hole; a third side bended from the first side; a fourth side bended from the first side and positioned in an opposite side to the third side; a space formed between the first and the second side; a plurality of receivers positioned in the space and meeting with the second side; elastic members respectively positioned in the plurality of receiver, and jewels respectively sitting on the elastic members, wherein the second side and the plurality of the receivers are rotatable in a state that the first, the third, and the fourth side are fixed.
摘要:
A display device testing system and a method for testing a display device using the same, which are capable of testing whether a display panel is defective or not according to a variation of the frame frequency and whether the driver module operates normally or not even at a voltage higher than a normal operation voltage. The display device testing system includes a display panel including a plurality of gate lines; a driver module including a gate driver unit for sequentially supplying a gate voltage to the plurality of gate lines in response to a test, vertical synchronization start signal; and a testing module for supplying a test vertical synchronization start signal to the driver module.