baber/WOPTO huggingface dataset:
Patent KR-920007728-B1 (KR)
Inventor: MATRAY ATTILA
IPC: B29C48/08
Filed: 1985-04-29
Granted: 1992-09-16
Abstract: 내용 없음.
Patent KR-910000494-B1 (KR)
Inventor: KURIBAYASHI TAKESHI
IPC: B23K11/30
Filed: 1986-04-16
Granted: 1991-01-26
Abstract: 내용 없음.
Patent KR-930012042-B1 (KR)
Inventor: MARKOWUIZ JOSEPH M
IPC: C22B34/34
Filed: 1986-06-04
Granted: 1993-12-23
Abstract: 내용 없음.
Patent KR-930000006-B1 (KR)
Inventor: ADAGO TAKESHI
IPC: F02D31/00
Filed: 1986-07-19
Granted: 1993-01-06
Abstract: 내용 없음.
Patent KR-920005369-B1 (KR)
Inventor: TODD JR PAUL H
IPC: A23L27/10
Filed: 1986-12-20
Granted: 1992-07-02
Abstract: 내용 없음.
Patent KR-910000140-B1 (KR)
Inventor: HUKUSHI ISAO
IPC: G11C29/00
Filed: 1987-01-28
Granted: 1991-01-21
Abstract: 내용 없음.
Patent KR-900001807-B1 (KR)
Title: Clock signal generation circuit
Inventor: DAKEMAE YOSHIHIRO
IPC: H03K19/017
Filed: 1987-02-06
Granted: 1990-03-24
Abstract: The clock signal generating circuit includes a P-channel transistor and a first N-channel transistor, each connected in series between a positive side power source line and a ground side power source line. A second N-channel transistor is connected between a common connection point of the P-channel transistor and thr first N-channel transistor through a node, and a clock signal is applied to a gate of the second N-channel transistor.  A capacitor is connected between the gate of the first N-channel transistor and a gate of the P- channel transistor.  A bootstrap capacitor is connected to the common connection point.
Patent KR-950013171-B1 (KR)
Inventor: BASSO RICHARD JOHN
IPC: H04Q11/04
Filed: 1987-03-11
Granted: 1995-10-25
Abstract: 내용 없음.
Patent KR-950001735-B1 (KR)
Inventor: GOLD RAYMOND
IPC: G01T5/10
Filed: 1987-05-04
Granted: 1995-02-28
Abstract: 내용 없음.
Patent KR-910003860-B1 (KR)
Inventor: KOBAYASHI SOUJI
IPC: F23D14/42
Filed: 1987-06-02
Granted: 1991-06-15
Abstract: 내용 없음.
Patent KR-950012089-B1 (KR)
Inventor: SAKAMURA KEN
IPC: G06F9/30
Filed: 1987-08-12
Granted: 1995-10-13
Abstract: 내용 없음.
Patent KR-900005698-B1 (KR)
Title: Process for preparing - oxyketon-dioxolane derivatives
Inventor: LEE HYO-WON
IPC: C07D317/12
Filed: 1987-10-13
Granted: 1990-08-06
Abstract: Cpds. of formula (I) are prepd. by reacting a cpd. of formula (II) with a cpd. of formula (III) in the presence of acid catalyst and organic solvent. In the formulas, R= C1-4 alkyl; X= halogen; Y= reactive ester or halogen; Z= H, lower alkylcarbonyl, alkylcarbamyl, arylcarbamyl or arylcarbonyl. (I) are useful as intermediates in the prepn. of medicines or agricultural chemicals.
Patent KR-910004179-B1 (KR)
Title: An oil-hydraulic circuit for an excavator
Inventor: LEE BOM-JU
IPC: E02F3/78
Filed: 1987-11-24
Granted: 1991-06-24
Abstract: The circuit adopting the operation of three pumps  and  three control  valves,  gives  the  combination  of  all  working,   the indepedence of travelling and dozer works, and  the  stability  of operations. The circuit comprises; three pumps  (1,2,3)  connected with the engine in serics for supplying oil from the tank  to  the actuator; first control valve (5) combined with a right travelling spool, bucket spool, boom first-staged spool; second control valve (9) combined with  swivel  spool,  dozer  spool,  boom  swivelling spool; third control valve  (13)  combined  with  left  travelling spool, boom two-staged spool,  arm  spool;  bucket/arm  protection means with pressure reducing valves (71),(161); swivelling  safety means with closed center type valve (241), two lock valves.
Patent KR-960005136-B1 (KR)
Inventor: MARTIN LIST
IPC: A61K38/00
Filed: 1987-12-18
Granted: 1996-04-22
Abstract: 내용 없음.
Patent KR-920001145-B1 (KR)
Title: Automatic switching circuit for vtr
Inventor: YUN JONG-KYUNG
IPC: G11B5/09
Filed: 1987-12-31
Granted: 1992-02-06
Abstract: The circuit is capable of shifting the selection between  VHS brightness play-back and S-VHS brightness  play-back  in  a  video tape recorder. The circuit includes: a buffer  (6)  for  buffering and amplifying FM signals; a gate (7) for passing the  FM  signals during a vertical synchronizing period; a  frequency  divider  (8) for supplying vertical synchronizing signals;  band  pass  filters (9) and (11) for passing the FM signals only between 3.4  MHz  and 5.4 MHz; wave shaping sections  (10)  and  (12)  for  shaping  the passed frequencies into a dc voltage; a comparing section (13) for comparing the output of the wave shaping sections; and a flip-flop (14) for supplying switching control signals to an analogue switch (3).
Patent KR-950001031-B1 (KR)
Inventor: HELMUT AUER
IPC: B65D6/24
Filed: 1986-09-12
Granted: 1995-02-08
Abstract: 내용없음.
Patent KR-940011920-B1 (KR)
Title: Apparatus for constant pressure in line-web crush-scoring
Inventor: SLOBODKIN YEFIM
IPC: B26D1/40
Filed: 1986-12-03
Granted: 1994-12-27
Abstract: There is provided an apparatus for applying constant pressure to a plurality of anvil rollers for crush-scoring used in combination with crush-scoring cylinders having protrusions extending from the surface thereof. Each anvil roller is supported in a substantially frictionless manner and the constant pressure is supplied by a flexible diaphragm acting on a plunger which can move substantially without friction in a pneumatic cylinder.
Patent KR-910005994-B1 (KR)
Inventor: JUNGERMANN ERIC
IPC: C11D17/00
Filed: 1988-01-30
Granted: 1991-08-09
Abstract: 내용 없음.
Patent KR-910000500-B1 (KR)
Title: Vehicle braking control system
Inventor: KANG GAB-RYUN
IPC: B60T8/78
Filed: 1988-02-15
Granted: 1991-01-26
Abstract: The circuit, mounted on  automobile,  controls  operation  of brake system and  lighting lamps  required  for   conditions.  The circuit performs automatic switching of head  lamp  and  detecting the disorder of  speed  sensor.  The  circuit  includes  a  switch section having headlamp switch (S1), main switch (S2), auto switch (S4), starting  switch  (S5).;  input  signal  processing  section having speed detector (1), power supply earths (8,9,10);  a  logic gae  having AND gates (AND1-AND4), OR  gate  (OR2)  and  inverters (IV1-IV3); a control signal output section having  delay  circuits (11,17,19); a control display section having brake  warning  lamp, tail lamp, etc.
Patent KR-960002446-B1 (KR)
Title: Aircraft service system
Inventor: KONDO YOSHIYUKI
IPC: B64D11/00
Filed: 1988-02-23
Granted: 1996-02-17
Abstract: An aircraft service system includes a plurality of attendant call lights (213) and reading lights (212) serving a different one of the passenger seats, a plurality of switch units (211) each for controlling one of the attendant call lights (213) and one of the reading lights (212) and a plurality of terminal units (200) each provided at a different one of the passenger seats. Each terminal unit (200) includes an attendant call key, a reading light key, an address generator (221), and means (219) for generating a request signal including an address in response to operation of the attendant call key or the reading light key. A head end apparatus (100) includes a controller for generating a control signal for one of the attendant call lights (213) or reading lights (212) in response to each request signal, each control signal including a seat address identifying one of the lights. A cable (171) is provided for transmitting the request signals from the terminal units (200) to the controller in the head end apparatus (100), and for transmitting the control signals to the switch units (211).
Patent KR-910003182-B1 (KR)
Inventor: MACHIDA AKIRA
IPC: B65G54/02
Filed: 1988-03-11
Granted: 1991-05-22
Abstract: 내용 없음.
Patent KR-960016254-B1 (KR)
Inventor: MICHEL GRATON
IPC: F16F15/129
Filed: 1988-04-14
Granted: 1996-12-07
Abstract: 내용없음
Patent KR-910005392-B1 (KR)
Title: Manufacturing method of double-hetero junction type led with junction current limited region
Inventor: KIM YONG-WON
IPC: H01L33/00
Filed: 1988-08-09
Granted: 1991-07-29
Abstract: The method for light emitting diode having  a  double  hetero structure, comprises  the  steps  of  evaporating  Si3N4  or  SiO2 materials onto on N type substrate (2) to form an insulating layer (31) as a current collecting region (C);  diffusing  Zn  materials onto the substrate region besides the insulating  region  (31)  to form a Zn diffusion layer (26) as  a  junction  current  limitting region; removing the insulating layer (31); forming a first N type coating layer, a P type active layer,  P  type  second  and  third coating layers sequentially by  using  liquid  crystalline  growth method. The resulting LED has a junction current limitting region.
Patent KR-910007468-B1 (KR)
Title: Solar cell of armophous silicon
Inventor: LEE BYUNG-HUN
IPC: H01L31/075
Filed: 1988-12-31
Granted: 1991-09-26
Abstract: An amorphous silicon solar cell is  laminuted  with  a  glass substrate (10), a transparent electrode (20), a pin layer (30),  a metal  electrode  (40),  an  insulating  layer  and  a   protruded electrode (60) of the transparent  electrode  in  order.  The  pin layer is formed by depositing a fixed negative mask on the  middle of the transparent electrode (20) in order to form  an electrodeprotruded part (20A). The insulating layer contg. SiO2 or SiN  can prevent a short circuit fault between the metal electrode (40) and the protruded electrode (60).
Patent KR-910005460-B1 (KR)
Title: Dc-dc converter
Inventor: CHO KYU-HYONG
IPC: H02M3/00
Filed: 1989-03-09
Granted: 1991-07-29
Abstract: A resonant type DC/DC converter reduces the powr  consumption of the resonat reactor and the resonant capacitor by producing the resonant mode only at the switching time. The converter  comprises the two-way switching elements and the one-way switching  elements between two power lines (QP,QN), the reactor and  the  transformer between the connecting points (a,b) of the condensers (C1,C3)  and the switching elements (S21,S41), an output filter condenser (Co), and a load (Ro).
Patent KR-960014386-B1 (KR)
Title: Auto-recording/-playing method for a vcr
Inventor: LEE HO-WON
IPC: G11B15/02
Filed: 1989-04-28
Granted: 1996-10-15
Abstract: comparing the end time of the present recording with the reserved time of the next recording; in case of the time interval of the above comparison is within the reference time, not performing the auto-playing but remaining in stand-by mode to perform the next reservation recording; and performing the auto-playing in case of the time interval is not within the reference time.
Patent KR-930006025-B1 (KR)
Inventor: MCGUIRE BRIAN E
IPC: F16L55/165
Filed: 1989-05-09
Granted: 1993-07-01
Abstract: 내용 없음.
Patent KR-910009599-B1 (KR)
Title: Process for producing kau (cn) 2
Inventor: MUN SANG-OK
IPC: C01C3/08
Filed: 1989-05-19
Granted: 1991-11-23
Abstract: A potassium  gold  cyanide  [KAu(CN)2   is  produced  by  (d) heat- reacting 99.99% gold pieces with 4HCl + HNO3 at  40-60  deg.C to obtain HAuCl4 soln. (A), (2) adding 2M NaOH to the soln. (A) to obtain NaAuO2, (3) reacting NaAuO2 with 99.5% H2C2O4 and 80%  N2H4 to precipitate a sponge-shaped gold (B),  (4)  heat-agitating  the gold (B), H2O2 and 3M KCN soln. (C)  at  80-100  deg.C  to  obtain KAu(CN) 2 soln. (D), (5) precipitating the soln. (D) at 1-5  deg.C, and (6) vacuum-drying the crystalline KAu(CN)2.  The  KAu(CN)2  is used in the mfr. of Au (or Au alloy) plating liquors.
Patent KR-0139074-B1 (KR)
Title: Elastic transparent anticondensation polyurethane coating for ttransparent glass or plastic substrates
Inventor: HOLZER GERHARD
IPC: C08G18/48
Filed: 1989-05-26
Granted: 1998-04-28
Abstract: The invention relates to a transparent anticondensation coating layer consisting of a flexible elastic polyurethane for windows and other transparent substrates made of glass or synthetic resin. The reaction mixture for the manufacture of the coating layer contains, besides a trifunctional polyisocyanate and a trifunctional polyol, a difunctional polyetherpolyol which is sulphonated or contains sulphonate radicals, a nonionic polyether-polysiloxane and a nonionic surfactant in the form of an ethoxylated fatty alcohol and/or an ethoxylated fatty amine.
Patent KR-910009241-B1 (KR)
Inventor: KURACHI DAKAYOSHI
IPC: G05B19/4069
Filed: 1989-08-28
Granted: 1991-11-07
Abstract: 내용 없음.
Patent KR-920004929-B1 (KR)
Title: Digital to analog converter
Inventor: CHOI KUI-SOK
IPC: H03M1/66
Filed: 1989-10-27
Granted: 1992-06-22
Abstract: The  digital  to  analog  converter  produces  analog  signal according to  selected  external  digital  input  using  bilateral switch unit. The reference voltage of the A/D converter is adjused by external reference voltage selection signal to produce  various analog output for one selected digital  input  using  a  reference voltage adjuster. The A/D converter comprises a photocoupler  unit (10) controlled by 4-bit signals (A,B), an inverter unit (20)  for inverting the output signals of  the  photocoupler  unit  (10),  a bilateral switch unit (20), a comparator (40)  for  comparing  the output signals of the switch unit (30) with reference voltage;  an adder (50) for adding output signals  of  the  comparator,  and  a maximum analog value setting unit (60) for setting  analog  output range.
Patent KR-930001338-B1 (KR)
Title: Process for the preparation of substituted mono olefin compound by amino alkyl
Inventor: PARK BYONG-UK
IPC: C07C211/25
Filed: 1989-12-28
Granted: 1993-02-26
Abstract: The aminoalkyl-substituted mono-olefin  compound  of  formula (I) is produced by reacting an aromatic compound of  formula  (II) with an alkali metal and an ethylene diamine in the presence of  a lower alcohol i.e.  methanol,  ehtanol,  propanol  or  butanol  at 40-140 deg.C. In the formulas, R is H or C1-4 lower  alkyl;  Y  is amino or nitrile; n is 1-3. The alkali  metal  is  pref.  lithium, sodium or potassium. The method presents better productivity.
Patent KR-0141366-B1 (KR)
Title: The utilization of polyester in place of lead for use as a sheathing material for curing long length hose
Inventor: WELLS HOYT MELLOR
IPC: B29C48/91
Filed: 1990-04-06
Granted: 1998-07-01
Abstract: A method of vulcanizing a tubular article by extruding a sheath of unoriented polyethylene terephthalate about the article followed by quenching the sheath to an amorphous state. The sheathed article is then subjected to vulcanizing conditions in order to convert the sheath from the low density amorphous state to the higher density crystalline state, thus compressing the article to effect a smooth finish.
Patent KR-0166963-B1 (KR)
Title: 2,7-diazabicyclo[3,3,0]otane and process for preparing thereof
Inventor: SCHENKE THOMAS
IPC: C07D471/14
Filed: 1990-04-17
Granted: 1999-01-15
Abstract: The invention relates to 2,7-diazabicyclo[3.3.0]octanes of the formula (I) 
<IMAGE>
 in which the substituents R<1> to R<8> have the meaning given in the description, and to a process for their preparation. The compounds according to the invention are useful intermediates for the preparation of highly active antibacterial quinolonecarboxylic acids. 
<??>The invention furthermore also relates to compounds of the formula (II) 
<IMAGE>
 in which R<1> to R<8> likewise have the meaning given in the description.
Patent KR-950008332-B1 (KR)
Title: Ceramic bearing
Inventor: MOMOSE TERUNOBU
IPC: F16C33/24
Filed: 1990-08-21
Granted: 1995-07-27
Abstract: The ceramic product of this invention is characterized in that the ceramic bearing constructed by being allowed to contact the ceramic outer ring (2) slidably with the ceramic inner ring (1) is provided with a latching member (3) to prevent the transfer of the ceramic inner ring (1) in the axial direction at the inner or the outer ring (2) of said ceramic product. The bearing constructed by the sliding contact of the ceramic inner ring (1) with the ceramic outer ring (2) can prevent the occurrence of the transfer of the inner ring (1) in the axial direction with respect to the outer ring (2) by providing a latching member (3) which prevents the transfer of the inner ring (1) in the axial direction at the inner or outer ring (2). Accordingly, there is no anxiety of separation of the outer ring (2) from the inner ring (1).
Patent KR-970005417-B1 (KR)
Inventor: KAWAKAMI TAKAMASA
IPC: C22B9/14
Filed: 1990-09-12
Granted: 1997-04-16
Abstract: 내용 없음.
Patent KR-930010521-B1 (KR)
Title: Yellow phosphor
Inventor: JONG IL-HYOK
IPC: C09K11/54
Filed: 1990-09-26
Granted: 1993-10-25
Abstract: An  alkali  earth  sulphide  yellow   fluorescent   material ((Ca1- x-y Srx Mgy)S:Mn,Ce; 0 <= y <= 1; 0 <= y <= 0) is  produced  by  (a) mixing the  compsn.  composed  of  calciun   carbonate   (CaCO3), strontium carbonate (SrCO3), magnesium sulphate (MgSO4), manganese carbonate (MnCO3) and cerium oxide (CeO2) with NH4Cl or (NH4)2HPO4 as a flux, (b) firing  the  mixt.  in  the  alumina  tray  of  H2S atmosphere at 1000-1200 deg.C for 2-4 hr, and cooling it, and  (c) removing the residual flux and the by-product with  a  pure  water and a hydrochloric acid. The fluorescent material for  CRT  having 560-590 nm wavelength- main peak has a good luminescent property.
Patent KR-100194407-B1 (KR)
IPC: G01N33/50
Filed: 1990-11-19
Granted: 1999-06-15
Abstract: The present invention relates to a reagent and to a method of using the same for automatically determining at least one leukocyte sub-population from a total blood sample. Using this reagent, it is possible, in a single step, to lyse the erythrocytes through the action of saponin and SDS, as well as to ensure the differential staining of the leukocyte sub-populations, at the same time preserving the integrity and morphology of the cells, through the combined action of various components including chlorazol black, an alcohol, a surfactant and preserving agents. The reagent according to the invention can be applied to different types of automatic flow cytometry analyzers.
Patent KR-940002788-B1 (KR)
Inventor: MEYER ROBERT B
IPC: A47L11/40
Filed: 1990-11-29
Granted: 1994-04-02
Abstract: 내용 없음.
Patent KR-940001599-B1 (KR)
Inventor: UEDE YOSHIFUMI
IPC: G11B15/32
Filed: 1990-12-27
Granted: 1994-02-25
Abstract: 내용 없음.
Patent KR-940001533-B1 (KR)
Inventor: WEDEL GREGORY L
IPC: D21F5/04
Filed: 1989-08-18
Granted: 1994-02-23
Abstract: 내용 없음.
Patent KR-940005000-B1 (KR)
Title: Manufacturing method of semiconductor laser diode
Inventor: SHI SANG-KI
Filed: 1991-03-18
Granted: 1994-06-09
Abstract: forming a second conductive-type GaAs current blocking layer on a first conductive-type GaAs substrate; etching second conductive-type GaAs current blocking layer and first conductive-type GaAs substrate to the [100  orientation, to form a channel in form of dovetail; sequentially forming a first conductive-type AlGaAs clad layer, AlGaAs active layer, a second conductive-type AlGaAs and a second conductive-type AlGaAs clad layer on the GaAs substrate and the GaAs current blocking layer by MOCVD method; primary growing a second conductive-type GaAs cap layer on a second conductive-type AlGaAs clad layer using MOCVD, and then secondary growing a second conductive-type GaAs cap layer using LPE method, to form a globally flat cap layer; and forming a second conductive-type electrode and a first conductive-type electrode on second conductive-type GaAs cap layer and bottom of the substrate, respectively, thereby realizing a high-quality laser diode having a low threshold current value.
Patent KR-950000042-B1 (KR)
Title: Process for producing fluorescent body
Inventor: PARK BYONG-HO
IPC: C09K11/77
Filed: 1991-05-01
Granted: 1995-01-07
Abstract: The 200 g of Y2O3 as matrix of red fluorescent substance and 11 g of Eu2O3 as activator is dissolved in nitric acid and coprecipitated YEuOxalate is manufactured by reacting with oxalate. The 211 g of coprecipitated oxide (Y0.965Eu0.035)2O3 is made by annealing YEuOxalate. The fluorescent substance is made for 1-4 hr at 1200-1350 deg.C by annealing mixture consisted of coprecipitated oxide and 0.28-1.43 mole of NaF, 0.21-1.03 mole of KF, 0.15-1.13 of NaCO3 as flux.
Patent KR-960012244-B1 (KR)
Inventor: HASEGAWA NAOYA
IPC: H01F10/12
Filed: 1991-05-01
Granted: 1996-09-18
Abstract: 내용 없음
Patent KR-960014012-B1 (KR)
Inventor: SADAO FUJIMORI
IPC: G01M17/007
Filed: 1991-05-30
Granted: 1996-10-11
Abstract: 내용없음.
Patent KR-940001227-B1 (KR)
Title: Focusing method using interference refractor
Inventor: PARK KYONG-HYON
IPC: H01L21/30
Filed: 1991-07-05
Granted: 1994-02-17
Abstract: The focusing method for a laser lithographic device uses the interference pattern. The laser beam from a light source (10) passes a collimater (11) to go to a beam splitter (12), where the laser beam is splitted into two ways, one for a mirror (13) and the other for an object (19) on a reflector (18). The two different passes of the laser beam form the interference pattern on the CCD (15) to be monitored. The focal length adjustable lens are adjusted to have the interference pattern straightened.
Patent KR-950000359-B1 (KR)
Inventor: UMEMOTO YUJI
IPC: H04B7/26
Filed: 1991-07-11
Granted: 1995-01-13
Abstract: 내용 없음.
Patent KR-100255264-B1 (KR)
Title: Device for optically scanning information plane
Inventor: OPHEIJ WILLEM GERARD
IPC: G11B7/135
Filed: 1991-09-09
Granted: 2000-05-01
Abstract: An optical scanning device for scanning an information plane (2) having tracks is described, which device comprises a radiation source (4) supplying a scanning beam (3) and an objective system (5) for focusing the scanning beam to a scanning spot on the information plane (2). To obtain two tracking spots, two grating parts located at both sides of the scanning beam and capturing border rays from the radiation source are used. <IMAGE>
Patent KR-950013742-B1 (KR)
Inventor: WOOSAMI YUDAKA
IPC: H02M3/28
Filed: 1991-09-27
Granted: 1995-11-15
Abstract: 내용 없음.
Patent KR-100230915-B1 (KR)
Title: Bulk polymerization using specific metallocene catalysts for the preparation of cycloolefin in polymers
Inventor: BREKNER MICHAEL-JOACHIM
IPC: C08F32/08
Filed: 1991-11-14
Granted: 1999-11-15
Abstract: Polymers of polycyclic olefins such as, for example, norbornene or tetracyclododecene, or copolymers of polycyclic olefins with cycloolefins and/or 1-olefins are obtained without ring opening, in high space-time yield, with high cycloolefin incorporation rate and at industrially favourable polymerisation temperatures by a bulk polymerisation in which the catalyst used consists of an aluminoxane and of a stereorigid, chiral metallocene compound of an element of groups IVb to VIb, where the hydrocarbon radicals forming the sandwich structure are different.
Patent KR-940010246-B1 (KR)
Title: Method of making orchid stone
Inventor: SONG HAE-HON
IPC: A01G9/10
Filed: 1991-12-14
Granted: 1994-10-22
Abstract: An orchid stone was manufactured by treating a sludge from a water refining plant. The sludge containing less than 40-50 % of moisture was dried and separated to 5X5 mm by a sieve. The sludge powder 60-70 parts, sawdust 3-5 parts, slaked lime 3-5 parts and clay 20-30 parts were mixed, extruded and calcinated at 1,000-1,200 deg.C. The orchid stone has various inorganics for plant growth and good permeability.
Patent KR-950006133-B1 (KR)
Inventor: ISHIDA MUNEO
IPC: G10C3/12
Filed: 1991-12-19
Granted: 1995-06-09
Abstract: 내용 없음.
Patent KR-950006987-B1 (KR)
Title: Semiconductor laser diode manufacturing method
Inventor: CHAE TAE-IL
Filed: 1991-12-31
Granted: 1995-06-26
Abstract: To block diffusion of p-type impurity such as Zn into the active layer of the laser diode, a structure of the laser diode with additive undoped InP layer on the active layer is employed. To do this, the fabrication of high-temperature current blocking layer in a laser diode using the n+-InP substrate is made as follows: undoped InP layer is grown additionally over undoped InGaAsP active layer to block the impurity diffusion; p+-InP and p+-InGaAsP layers are grown over undoped InP layer; and designed patterns for p+-InGaAsP, p+-InP, undoped InP, and InGaAsP layers are each formed by selective etching.