baber/WOPTO huggingface dataset:
Patent KR-20110120595-A (KR)
Title: Holder apparatus for specimen in polishing machine
Inventor: PARK KYUNG HYUN
IPC: B24B41/06
Filed: 2010-04-29
Abstract: PURPOSE: A holder apparatus for specimen in polishing machine is provided that by the specimen of the size and various shape being fixed simply and steadily training specimen the damage of holder and specimen is prevented among grinding. CONSTITUTION: A holder apparatus for specimen in polishing machine comprises a base plate member(10) and specimen fixing members(20). The base plate member is connected to the rotating tools of the polisher. A plurality of mounting holes(11) is pierced in the base plate member. A plurality of specimen fixing members installs separably through the mounting hole of the base plate member. The specimen fixing member fixes the location of the specimen arranged in the lower part of the base plate member.
Patent KR-20110120637-A (KR)
Title: Apparatus and method forming etching resist pattern on printed circuit board and printed curcuit board manufactuing method using the method
Inventor: CHOI HYUN HO
IPC: H05K3/06
Filed: 2010-04-29
Abstract: PURPOSE: An apparatus for forming an etching resist pattern capable and a manufacturing method thereof and a method for manufacturing a PCB(Printed Circuit Board) using the same are provided to form an etching resist pattern by directly printing an etching resist pattern on a PCB. CONSTITUTION: A printing roller(210) is attached to a printing drum to surround the outer circumference of the printing drum. The printing roller includes a printing plate. An etching resist solution spreading part(230) supplies an etching resist liquid to the printing plate. A transfer roller(220) is arranged to be parallel with a printing drum. The transfer roller transfers the etching resist liquid, which is spread in the printing plate, to the printed circuit board.
Patent KR-20110124532-A (KR)
Title: Solar cell and method for manufacturing the same
Inventor: JANG DAE HEE
IPC: H01L31/04
Filed: 2010-05-11
Abstract: PURPOSE: A solar cell and a manufacturing method thereof are provided to improve the efficiency of the solar cell by arranging an electrode unit and a rear electric field unit with a lattice type to increase charge collection efficiency. CONSTITUTION: An emitter(121) has a first emitter unit(1211) with a second conductive type and a first thickness and a second emitter unit(1212) with a second thickness. A plurality of front electrodes(140) is connected to the second emitter. A rear electric field unit(171) is partially located on the rear of the substrate. A plurality of rear electrodes(150) is connected to the rear electric field unit.
Patent KR-20110125078-A (KR)
Title: Direct acting type shout-off valve
Inventor: JO HEE SUNG
IPC: F16K31/06
Filed: 2010-05-12
Abstract: PURPOSE: A direct operating type opening/closing valve is provided to reduce noise using simple configuration by operating the vertical movement of a plunger cap. CONSTITUTION: A direct operating type opening/closing valve comprises a body(201), a diaphragm(204), a plunger(207), and a supporting part(206). The plunger is integrally formed in the diaphragm. The supporting part comprises a molded coil(212) A plunger cap(213) is included inside the molded coil. The plunger, projected to the outside of the supporting part, is integrally assembled with the diaphragm using a hollow part of a plunger-cover.
Patent KR-20110126940-A (KR)
Title: Thrombin sensor using nanoparticles coated with electron transfer mediator and method for preparing the same
Inventor: CHUNG BONG HYUN
IPC: G01N33/86
Filed: 2010-05-18
Abstract: PURPOSE: A sensor for detecting thrombine using nanoparticles coated with electron transfer mediators is provided to ensure excellent stability and sensitivity. CONSTITUTION: A sensor for detecting thrombine has an aptamer which selectively binds to thrombine and is fixed on the surface of an electrode. The aptemer is conjugated with nanoparticles coated with electron transfer mediators. The aptamer is DNA or RNA. The aptamer has a DNA sequence of sequence number 1. The mediator is ferrocene, quinone, cobalt, nickel, ruthenium, perricyanide, rhodium, palladium, osmium, iridium, platinum or hexamine ruthenium (III). A method for manufacturing the sensor comprises: a step of fixing the aptamer on the electrode; and a step of binding the aptamer with the nanoparticles.
Patent KR-20110127017-A (KR)
Title: Oral solid composite comprising valsartan
Inventor: PARK SUCK YONG
IPC: A61K9/16
Filed: 2010-05-18
Abstract: PURPOSE: A single or complex solid formulation of valsartan is provided to optimize the range of bulk density and particle dispersion of valsartan. CONSTITUTION: A solid formulation for oral administration contains valsartan having 0.28-0.35 of bulk density. The average particle diameter of valsartan is 3-12 um. The formulation contains 20-65% of valsartan. The solid formulation additionally contains hydrochlorothiazide or amlodipine besylate as an active ingredient. The solid formulation additionally contains 3-8% of excipient including fine crysatalline cellulose, croscarmelose, copovidon VA 64, low substituted hydroxypropyl cellulose, magnesium stearate, colloidal silicon dioxide, talc, gluconic acid starch sodium, isomalt, lactose, or mannitol.
Patent KR-20110129057-A (KR)
Inventor: PARK TAI UP
IPC: B21D19/04
Filed: 2010-05-25
Abstract: 본 발명은 강관을 가공가능함에 있어서,수평 회전을 통하여 피가공물이 회전 접촉함과 동시에 링형연부 가공이 가능한 방법과 장치이며, 
강관(가) 연부를 가압부재로서 가압하여 원통형의 강관(가) 단부가 수직단면의 링형 연부를 이룰때까지 점차 확개시키면서 가압 절곡시키는 강관가공방법에 있어서, 회전지지부재를 수평상태에서 회동하도록 함과 아울러 피가공물 강관(가)이 수평 상태에서 외주면접촉으로 소정의 회전속도를 유지하도록 하는 특징을 가지며, 중공의 케이싱(11)내에 나사맞춤으로 전,후진되는 이동체(12)를 형성하되,핸들(14)로서 회동되는 스크류바(13)에 나사맞춤되게 하여 이동체(12)가 핸들(14)로서 전,후진 가능하게 하고, 이동체(12)는 케이싱(11)과의 사이에 축점(A)을 축으로 소정 각도 회동가능하게 함과 아울러 이동체(12)의 선단에 압착롤(15)을 형성하여서 되는 가압부(1); 및 모터와 감속기로 이루어진 구동수단(21)과, 이 구동수단(21)에 축연결되는 회전지지부재(22)로서, 회전축(23)이 수평방향으로 중심축을 관통하여 이루어지며, 외주면이 강관(가)의 외주면과 접촉하여 회전하도록 하고, 회전지지부재(22)의 접촉주면 양측에 같은 회전방향으로 제1,제2받침롤(25)을 형성한 받침부(2)를 포함하는 강관 가공장치이다.
Patent KR-20110132752-A (KR)
Title: Method for manufacturing semiconductor device
Inventor: YOU MI HYUNE
IPC: H01L21/8242
Filed: 2010-06-03
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to improve yield of the semiconductor device by preventing bridge inferiority of the gate and polymer of a peripheral region after evaporating the polymer. CONSTITUTION: A first oxide film, a nitride film, and a second oxide film are formed on a semiconductor substrate(200). A first pattern is formed by etching the first oxide film, the nitride film, and the second oxide film using a POM(Peri Open Mask). First and second dipping out processes are executed in the first pattern until the semiconductor substrate is exposed. A polymer layer(280) is formed in an entire side which includes the first pattern. A polymer pattern is formed in a peripheral region(2000b) by etching the polymer layer.
Patent KR-20110133179-A (KR)
Title: Polypropylene needle-punching non-woven fabric for an oil-absorber having excellent mechanical strength and manufacturing method thereof
Inventor: PARK SEO JIN
IPC: D04H1/70
Filed: 2010-06-04
Abstract: PURPOSE: An oil-adsorbent filament polypropylene needle punching non-woven fabric with excellent mechanical strength is provided. CONSTITUTION: A method for fabricating an oil-adsorbant filament polypropylene needle punching non-woven fabric comprises: a step of melt-spinning polypropylene and performing heat fusion at certain temperature and pressure to prepare prebonding web; and a step of needle-punching on a prebonding web and performing thermal adhesion. The prebonding web has at least five layers comprising spun bond filament of an outer layer and melt blown of an inner layer.
Patent KR-20110135774-A (KR)
Inventor: KIM JAE HWAN
IPC: A45B3/04
Filed: 2010-06-11
Abstract: PURPOSE: An ultrasonic wave stick is provided to deliver three-dimensional information through vibration and a buzzer. CONSTITUTION: An ultrasonic wave stick comprises: a vibrating motor and a buzzer speaker(a1); a signal transmitter and receiver(a2) which sets ultrasonic frequency band and angle with an optimal value in order to detect a distance required for a walk; a CPU part(a3) which processes desired information through the manipulation of a user; and a power supply unit(a4).
Patent KR-20110137986-A (KR)
Inventor: CHOE KUN YONG
IPC: F24S20/30
Filed: 2010-06-18
Abstract: 본 발명은 태양열과 같이 빛으로 열을 제공하는 히타램프(1) 뒷면에 후면반사판(2)을 가지는 하우징(5); 
하우징(5) 내에 설치되고 후면반사판(2) 전면 중앙에 덕트공(12)을 이루도록 안치되어 히타램프(1)의 열을 집열시키는 집열판(10); 
히타램프(1) 전면에 이격 설치되어 눈부심 방지와 전면부에서 집열판으로 반사하여 집열판의 집열효율을 증대시키도록 기능하는 전면 집열보조판(40); 
외기를 흡입하여 상기 덕트공(12)으로 공급토록 함으로써, 하우징(5) 전면의 배기구(6)로 온기를 자연풍 상태로 배출토록 하는 흡입팬(30); 
하우징(5)의 전면에 설치하여 사용자의 옷이 가열로 변형되는 것을 막아주도록 피사체의 열을 인식하는 써모파일 센서(60)를 포함하여 구성한 것을 특징으로 하는 피사체 열감지 가능한 고안전성 난방기이다.
Patent KR-20120000937-A (KR)
Title: Mobile terminal
Inventor: LEE HYUN HO
IPC: H01M50/50
Filed: 2010-06-28
Abstract: PURPOSE: A mobile terminal is provided to safely maintain the contact state of the battery terminal in which the impact or vibration is forced from the external side to a mobile terminal. CONSTITUTION: A plurality of contact pads includes a first pad unit which is formed in the first side of battery and a second pad unit which is formed in the second side of battery. An elasticity terminal includes a first contact part(252) which is formed to touch the first pad unit and a second contact unit(255) which is formed to touch the second pad unit. The first contact and the second contact unit are formed into one. An insulating mount(260) supports the elasticity terminal.
Patent KR-20110084079-A (KR)
Title: Rechargeable battery
Inventor: BYUN SANG WON
IPC: H01M50/583
Filed: 2010-06-30
Abstract: PURPOSE: A rechargeable battery is provided to prevent the explosion or firing of the rechargeable battery by causing the short circuit in the increase of inner pressure and to disconnect electrical connection between a terminal and an electrode group. CONSTITUTION: A rechargeable battery(110) comprises: an electrode assembly(10) which has a positive electrode(11), a negative electrode(12), and a separator(13) and is accommodated in a battery case; a cap plate(28) including a short member(43) which is connected to the battery case and is configured to electrically connect the positive and negative electrodes; and a current collector comprising at least one fuse part(31a,32a) electrically connected to one of the positive and negative electrodes.
Patent KR-20110004324-A (KR)
Title: Test socket
Inventor: I CHAE YUN
IPC: G01R31/26
Filed: 2010-07-06
Abstract: PURPOSE: A test socket for a semiconductor chip is provided to arrange a plunger at a part where the socket directly contacts a solder ball, thereby increasing lifetime and durability. CONSTITUTION: A plurality of conductive elastic parts(210) is electrically connected to a circuit board for a test. The circuit board for a test transfers a test signal to a semiconductor chip. An elastic part accommodating housing(100) accommodates a plurality of conductive elastic parts. A plurality of plungers(300) contacts a solder ball of the semiconductor chip. The plungers transfer the test signal from the conductive elastic parts to the solder ball.
Patent KR-20120006263-A (KR)
Inventor: CHOI GA IN
IPC: E04B2/56
Filed: 2010-07-12
Abstract: PURPOSE: A wall construction method is provided to improve the performance of a wall and to form an outer wall by covering a core surface with mortal. CONSTITUTION: A wall construction method comprises as follows. A core material for a wall covered with reinforcing material(3) is covered on the surface of an insulating material(1). Horizontal and vertical support stands are located among columns of a building. The core is clinched on the support stand using the welding lamp member in order to install a temporary wall. A coating material for the wall formation is spread on the surface of the installed edge wall using a mortar method. The coating material spread in the temporary wall, is cured in order to form the exterior wall.
Patent KR-20120007198-A (KR)
Inventor: LEE SEUNG GEUN
IPC: F25D23/12
Filed: 2010-07-14
Abstract: 본 발명의 실시예에 따른 냉장고는, 고내 일측에 장착되는 마운팅 케이스; 상기 마운팅 케이스에 탈착 가능하게 제공되며, 물이 저장되는 워터탱크; 상기 워터탱크에서 아이스 메이커 또는 디스펜서로 연장되는 급수유로; 상기 마운팅 케이스의 내측에 구비되며, 워터탱크에 저장된 물을 펌핑하는 펌프를 포함하며, 상기 마운팅 케이스는, 전방으로 개구되어 상기 워터탱크가 삽입되는 워터탱크 수용부와, 측방으로 개구되어 상기 저장공간의 벽면에 의해 차폐되며, 내부에 상기 펌프가 장착되는 장착 공간부를 포함한다. 이와 같은 구성을 가지는 본 발명에 의하면 생산성이 향상되는 이점이 있다.
Patent KR-20120011339-A (KR)
Title: Light emitting diode and method for fabricating the same
Inventor: CHOI YONG GYOO
IPC: H01L33/22
Filed: 2010-07-20
Abstract: PURPOSE: A light emitting diode and a manufacturing method thereof are provided to use a hard mask while patterning a first nitride gallium layer into a concavo-convex shape, thereby increasing an etching selectivity ratio. CONSTITUTION: A first nitride gallium layer(43) is formed into a concavo-convex shape. A first conductivity type nitride gallium layer(45), an active layer(46), and a second conductive type first nitride gallium layer(47) are arranged on the first nitride gallium layer. A clad layer(48) and a second conductive type second nitride gallium layer(49) are arranged on the second conductive type first nitride gallium layer. A first metal electrode(50) is arranged along the bottom and lateral surfaces of an indented part of the second conductive type second nitride gallium layer. A first insulating film(51) is arranged on the upper part of the first metal electrode.
Patent KR-20120009979-A (KR)
Title: Antihypertensive natural seasoning for Muchim containing soybean hydrolysate and preparation thereof
Inventor: DO JEONG RYONG
IPC: A23L27/00
Filed: 2010-07-23
Abstract: PURPOSE: A natural seasoning for antihypertensive vegetable dish with sauce, and a producing method thereof are provided use soybean hydrolysate powder for improving the taste of the seasoning. CONSTITUTION: A natural seasoning for antihypertensive vegetable dish with sauce contains 3wt% of sea tangle powder, 15-20wt% of soybean powder, 1-2wt% of garlic powder, 3-5wt% of anchovy powder, 10-15wt% of short-necked clam powder, 20-25wt% of shrimp powder, 1-2wt% of salt, 3-5wt% of onion powder, 15-25wt% of lentinus edodes powder, and 5-20wt% of soybean hydrolyzate powder. The soybean hydrolyzate powder is obtained by hydrolyzing soybean isolated protein powder at 64-66 deg C using 2.4L of alcalase for 3-4 hours, and freeze-drying the outcome in the vacuum condition.
Patent KR-20120010427-A (KR)
Title: Mattress for bed
Inventor: KIM SEONG MO
IPC: A47C21/00
Filed: 2010-07-26
Abstract: PURPOSE: A mattress for a bed is provided to facilitate the installation and carrying thereof due to light weight. CONSTITUTION: A mattress for a bed comprises: a frame shaped main body(1) in which a receiving space(11) in which the top thereof is opened is formed and a plurality of ventilation holes are formed in the floor of the receiving space; and cushion members(2) which are arranged in the receiving space, are vertically or transversely installed according to the convenience of a user, and are formed of a penetration hole(21) in the center thereof. The penetration hole of the cushion member is formed in a shape of wide top and narrow bottom.
Patent KR-20120011390-A (KR)
Title: Pillow cover
Inventor: PARK SUNG SOO
IPC: A47G9/00
Filed: 2010-07-29
Abstract: PURPOSE: A disposable hygienic pillow cover is provided to decontaminate a pillow and enhance antibiosis, thereby improve health of children. CONSTITUTION: A disposable hygienic pillow cover is composed of felt layers(10) which the felt is impregnated in a mixed silver solution of 20ppm of pure nanosilver solution and 10ppm of aromatic material. The double sided tape or the Velcro tape is attached to one side edge of the pillow cover. The aromatic material is a mixture of at least one of the followings: a chrysanthemum scent, a herb perfume, a bergamot flavor, a pepper flavor, a chamomile scent, a cedarwood scent, a clary sage flavor, a cinnamon flavor, an eucalyptus scent, a frankincense scent, a geranium, a lavender perfume, a lemon flavor, an orange scent, a marjoram fragrance, a myrrh fragrance, a fragrance patchouli, a mint scent, a pine perfume, a rosemary scent, a white sandal wood, an orange flavor, and a time scent.
Patent KR-20110014959-A (KR)
Title: Treatment of ornamental plants
Inventor: DALY JAMES
IPC: A01N25/02
Filed: 2010-07-29
Abstract: PURPOSE: A method for treating an ornamental plant is provided to lengthen of lifetime of the plant and to improve plant condition. CONSTITUTION: A method for treating an ornamental plant comprises a step of treating the plant with a liquid composition containing one or more cyclopropene compounds. The total concentration of the cyclopropene compound is 0.3-300 mg per 1L of liquid composition. The liquid composition is an aqueous composition and additionally contains one or more chelating agents.
Patent KR-20120015080-A (KR)
Title: Apparatus and method for controlling communication connection between the ip-based phones
Inventor: CHO SUNG GOO
IPC: H04L12/66
Filed: 2010-08-11
Abstract: PURPOSE: A communication connection control device and a method thereof are provided to supply a telephone connection service between IP telephones and to display state information of a registered IP telephone. CONSTITUTION: A registration information processing unit(111) broadcasts an IP address of a first IP telephone(11) and a telephone number on the same subnet. The registration information processing unit receives the IP address of the other IP telephone and a telephone number on the same subnet in a broadcasting method. A call connection unit(115) connects a call between a first IP telephone and a second IP telephone by requesting telephone connection to the corresponding telephone number.
Patent KR-20120016448-A (KR)
Title: The free mixture unit of a water-purifying system in bernoulli's theorem
Inventor: KIM DEOG YONG
IPC: C02F1/52
Filed: 2010-08-16
Abstract: PURPOSE: A medicine free mixer for purifying using Bernoulli's theorem is provided to automatically add purifying drug in case of supplying polluted water. CONSTITUTION: A medicine free mixer for purifying by Bernoulli's theorem comprises: a partition plate(20) which converts flow path to evenly mixing purifying drug and polluted water by being coupled inside the mixer; a venture tube(60) which is mounted to change pressure for inputting the purifying drug; and a connection tube(40) for supplying the purifying drug. The connection tube is connected to a purifying drug tank(41) and a pump(42).
Patent KR-20120021767-A (KR)
Title: Electric wire connected shunt resistor and connecting method thereof
Inventor: GU JA WOON
IPC: G01R15/14
Filed: 2010-08-16
Abstract: PURPOSE: An electric wire connected shunt resistor and a connecting method thereof are provided to prevent a short circuit from a connection terminal by coupling a wire with a penetration hole when receiving an external force. CONSTITUTION: A resist strip(20) is comprised of a material having resistance of a cu-nickel alloy, a nickel-chrome alloy, a cu- manganese alloy, and manganin alloy A terminal strip(30) is combined in both ends of the resistive strip. The terminal strip is composed of a material including a copper having excellent conductivity. At least one connection terminal has the terminal strip which is protruded to one side corner. Each wire is welded in the connection terminal respectively.
Patent KR-20120016906-A (KR)
Title: Flexible display substrate using chemistry strengthening glass
Inventor: CHI SUNG DAE
IPC: C03C27/12
Filed: 2010-08-17
Abstract: PURPOSE: A flexible display substrate using chemically tempered glass is provided to improve the intensity and the flexibility of the flexible display substrate using chemically tempered thin glass. CONSTITUTION: A flexible display substrate using chemically tempered glass includes a thin glass(110) and a support(130). The support is laminated on the upper side, the lower, or the upper and lower sides of the thin glass. The thin glass is based on a chemically tempered glass of 50-400um thicknesses. The compressive stress of the thin glass is between 300 and 1000MPa. The thickness of a compressive stress layer is between 10 and 40um. The intensity of the substrate is between 45 and 55kgf/cm^2. The optical transmittance of the display substrate is between 87 and 93%.
Patent KR-20120017752-A (KR)
Title: 전자식릴레이
Inventor: KIM GIL SU
IPC: H01H50/02
Filed: 2010-08-19
Abstract: 본 발명은 전자식릴레이에 관한 것이다. 본 발명의 외관과 골격을 하우징(10)이 형성한다. 상기 하우징(10)은 하부의 제1공간(11)이 하부로 개방되고 상부의 제2공간(12)이 상부로 개방되며, 이들 제1공간(11)과 제2공간(12)은 서로 연통되어 있다. 상기 제1공간(11)과 제2공간(12)의 사이에는 상기 하우징(10)의 내면을 둘러 지지단(16)이 형성된다. 상기 하우징(10)의 제1공간(11)에는 하부커버(20)의 일부가 삽입되어 결합된다. 상기 하부커버(20)의 내부공간(21)을 측벽(22)이 형성하는데, 상기 내부공간(21)에는 터미널플레이트(30)가 설치된다. 상기 터미널플레이트(30)와 하부커버(20)의 사이에는 터미널(40)의 중간부가 위치되고, 상기 터미널플레이트(30)의 상부로는 터미널(40)의 기판연결부(41)가 돌출되고 상기 하부커버(20)의 하부로는 터미널(40)의 돌출부(41')가 돌출된다. 상기 하부커버(20)의 측벽(22)과 상기 터미널플레이트(30)의 결합편(32)의 선단에는 인쇄회로기판(40)의 일면 가장자리가 안착되고 상기 지지단(16)에는 인쇄회로기판(40)의 타면 가장자리가 안착된다. 이는 상기 하부커버(20)가 하우징(10)에 결합됨에 의해 이루어진다. 본 발명에 의하면 터미널(40)을 가조립한 상태로 인쇄회로기판(40)과 솔더링할 수 있고, 하부커버(20), 터미널플레이트(30), 터미널(40) 및 인쇄회로기판(42)을 일체로 조립하여 하우징(10)에 결합하므로 조립작업이 용이해지고, 상기 하우징(10)의 구조상 방열이 보다 원활한 이점이 있다.
Patent KR-20120017883-A (KR)
Title: Package on package
Inventor: KANG TEA HYUK
IPC: H01L23/12
Filed: 2010-08-20
Abstract: PURPOSE: A package on package is provided to mount a plurality of chips on a bottom package by overcoming a height limit of a solder ball formed between a top package and the bottom package. CONSTITUTION: A package on package includes a bottom package(100) and a solder pad. A solder pad is between the solder and a top package or bottom package. Two or more chips are laminated on the bottom package. The solder pad is comprised of a first solder pad(121) and a second solder pad(122).
Patent KR-20120039770-A (KR)
Title: Silymarin-loaded solid dispersion system with surface-attached method
Inventor: CHOI HAN GON
IPC: A61K31/357
Filed: 2010-08-26
Abstract: PURPOSE: An oral solid dispersion composition of silymarin by novel surface attachment method is provided to ensure excllent fluidity and to improve elution. CONSTITUTION: A silymarin solid dispersion comosition contains 20-45 wt% of polyvinyl pyrrolidone, 6-30 wt% of polysorbate, and 45-65 wt% of silymarin. The composition is manufactured in a pharmaceutical form containing white sugar, antiseptic, and perfume and diluents.
Patent KR-20120019784-A (KR)
Title: Backlight unit
Inventor: YEO SOO WAN
IPC: G02F1/13357
Filed: 2010-08-27
Abstract: PURPOSE: A direct type backlight device is provided to convert the light of a spot light source emitted from an LED(Light Emitting Diode) into the light of a surface light source, thereby recycling the surface light source by a diffusion plate. CONSTITUTION: A plurality of grooves is formed on the bottom of a light guide plate(120). An LED is inserted into the grooves. The light guide plate is laminated on the top of an LED array. A prism pattern with a round vertex angle is formed on the top of a plurality of diffusion plates. The diffusing plates are laminated on the top of the light guide plate so that prism patterns cross each other. An optical sheet(140) is laminated on the top of the diffusing plates.