baber/WOPTO huggingface dataset:
Patent KR-20150021268-A (KR)
Inventor: HA BYUNG JO
IPC: C07D311/06
Filed: 2013-08-20
Abstract: The present invention relates to an esculin melt improving solubility and stability in an esculin liquid by forming the melt by mixing esculin and polyol of low molecule, and to a cosmetic composition comprising the same. According to the present invention, the esculin melt improves solubility and stability of esculin, increases stability according to time elapse, and lowers decomposition speed of esculin, thereby increasing availability to cosmetics.
Patent KR-20140060220-A (KR)
Title: Compound for organic electroluminescent device and organic electroluminescent device comprising the same
Inventor: KANG JU SIK
IPC: C09K11/06
Filed: 2013-08-30
Abstract: Disclosed are a compound for an organic electroluminescent device, and the organic electroluminescent device including the same. According to the present invention, the thermal stability and luminous efficiency of the organic electroluminescent device including the compound for an organic electroluminescent device can be improved, and the luminous efficiency of the organic electroluminescent device can be improved by enhancing triplet energy of a phosphorescent light-emitting material using the compound of the present invention as a hole transporting layer material.
Patent KR-20150025943-A (KR)
Inventor: NAMGUNG SEUNG
IPC: B21C1/00
Filed: 2013-08-30
Abstract: Disclosed are a steel material capable of ensuring excellent processability by preventing the elongation of MnS by adding calcium (Ca) at the optimal composition ratio, and a manufacturing method thereof. According to the present invention, the steel includes 0.4-0.5 wt% of C, 0.1-0.5 wt% of Si, 0.4-0.8 wt% of Mn, 0.03 wt% or less of P, 0.01-0.04 wt% of S, 0.05-0.30 wt% of Cu, 0.04-0.08 wt% or less of Ni, 0.04-0.08 wt% of Cr, 0.01-0.04 wt% of Mo, 0.001-0.020 wt% of Al, 0.0001-0.0040 wt% of Ca, 0.008 wt% or less of N_2, 0.004 wt% or less of O_2, and the remainder consisting of iron (Fe) and inevitable impurities. The steel material has a tensile strength (TS) of 800-950 MPa, a yield strength (YS) of 600-750 MPa, and a Brinell hardness (HB) of 200-215.
Patent KR-20150026316-A (KR)
Title: 이물질 제거가 가능한 컨베이어
Inventor: KIM CHANG SOO
IPC: B65G45/18
Filed: 2013-09-02
Abstract: 본 발명은 이차전지 및 이차전지 부품을 이송하는 컨베이어벨트 상의 이물질을 제거할 수 있는 컨베이어에 관한 것이다. 
본 발명인 이물질 제거가 가능한 컨베이어는 이송대상물이 배치되어 회전하는 컨베이어벨트; 상기 컨베이어 벨트와 연결되어 상기 컨베이어벨트를 회전시키는 구동롤러; 상기 컨베이어벨트와 밀착되게 접촉하여 상기 컨베이어 벨트 회전시 함께 회전하고 상기 컨베이어벨트 상에 잔류하는 이물질을 제거하는 흡착롤러;를 포함한다. 
본 발명인 이물질 제거가 가능한 컨베이어는 컨베이어벨트 상에 존재하는 이물질을 제거할 수 있어 이차전지 및 전지셀이 이물질로 인한 오염이 방지될 수 있으며, 이에 따라 제품의 품질이 향상될 수 있다.
Patent KR-20150027566-A (KR)
Inventor: RYU SEUNG TAE
IPC: G06F3/14
Filed: 2013-09-04
Abstract: Various embodiments of the present invention relate to a method of running functions on an electronic device and a device thereof. An idle screen is displayed on a first area among the entire screen. If a certain event occurs, touch on a second area among the entire screen is activated. If a gesture is inputted on the second area through a cover combined to the electronic device, an application corresponding to the first gesture may be run.
Patent KR-20140035823-A (KR)
Inventor: KITANI TAKESHI
IPC: H01L29/872
Filed: 2013-09-05
Abstract: 본 발명은, 적은 이온 주입 회수로, 충분한 내압을 실현할 수 있는 탄화 규소 반도체장치를 제공하는 것을 목적으로 한다. 본 발명은, 탄화 규소 기판(10) 위에 형성된 탄화 규소 드리프트층(1)과, 탄화 규소 드리프트층(1) 표면층에 형성된 P형 영역(2)과, P형 영역(2)의 형성 개소에 따라 탄화 규소 드리프트층(1) 위에 형성된 쇼트키 전극(3)을 구비한다. 그리고, P형 영역(2)이, P형 불순물의 분포의 반복 단위인 유닛 셀(20)이 복수 배열됨으로써 형성된다. 또한, 각 유닛 셀(20)이, 제1농도로 P형 불순물이 분포되는 제1분포 영역(20A)과, 제1농도보다 높은 제2농도로 P형 불순물이 분포되는 제2분포 영역(20B)을 적어도 갖는다.
Patent KR-20150028510-A (KR)
Inventor: PARK YOUNG SUN
IPC: F25B30/02
Filed: 2013-09-06
Abstract: 본 발명의 실시예에 따르면, 온수 공급 시스템에 있어서, 냉각수를 저장하는 저온수 탱크; 용수(用水)를 저장하는 고온수 탱크; 및 상기 저온수 탱크와 고온수 탱크 사이에 연결되어, 상기 냉각수와 상기 용수 사이의 열을 교환하는 제1 히트 펌프;를 포함하고, 상기 저온수 탱크는 하나 이상의 저온창고를 냉방하기 위한 하나 이상의 제2 히트 펌프에 상기 냉각수를 공급하도록 구성된 것을 특징으로 하는 온수 공급 시스템이 제공된다.
Patent KR-20140034087-A (KR)
Title: Electrolyte for lithium sulfur batteries and lithium sulfur batteries using the same
Inventor: SUN YANG KOOK
IPC: H01M10/05
Filed: 2013-09-10
Abstract: The present invention relates to an electrolyte for a lithium sulfur battery and a lithium sulfur battery using the same. The electrolyte for a lithium sulfur battery of the present invention includes lithium polysulfide in the electrolyte, so as to prevent sulfur compounds from eluting from anode materials including sulfur, and to improve the stability of the electrolyte. As a result, the side effect, caused by the reaction between the eluted sulfur compounds and cathode, is prevented, thereby presenting stable lifespan properties. [Reference numerals] (AA) Example 1-1; (BB) Example 1-2; (CC) Example 1-3; (DD) Example 1-4
Patent KR-20150030912-A (KR)
Inventor: KIM SONG YI
IPC: B65D3/22
Filed: 2013-09-13
Abstract: The present invention relates to a double layered paper container which is provided to be easily held by a user, even when the container has hot food contained therein; and comprises: a container body (10) having an opened upper part and a food containing space formed therein; a lid (20) attached to the container body to cover the opened upper part of the container body; and a cover (30) surrounding the outer circumferential surface of the container body (10) and forming a space spaced with a predetermined interval from the surface. The container body (10) has a perforated part (11) formed along the circumference of the upper part thereof. Both upper and lower ends of the cover (30) are bent toward the container body (10) to form an upper end bent part (31) and a lower end bent part (32) which are bonded and fixated on the container body (10) to form a space between the container body (10) and the cover (30). Accordingly, the double layered paper container is capable of preventing the heat transmission of heated food by having the cover installed along the circumference of the container body, and is not easily deformed as the cover reinforces the upper part of the container body, even though the upper end bent part of the container body is cut off together with the lid.
Patent KR-20150031990-A (KR)
Inventor: LEE SANG KOOK
IPC: A47K10/22
Filed: 2013-09-17
Abstract: The purpose of the present invention is to provide a built-in jumbo roll toilet paper dispenser which is capable of securing convenience in use by allowing a user to check the discharge of a toilet paper roll with naked eyes, and easily cut and use the toilet paper roll; and maximizing the level of hygiene by absorbing fine dust generated by the toilet paper roll discharged from the inside of the toilet paper dispenser. The toilet paper dispenser comprises: a built-in container including an upper storage unit (110) having a jumbo toilet paper roll stored therein and a lower dispenser unit (120) capable of discharging and cutting the jumbo toilet paper roll; a front door (300) including a one-directional rotary roll shaft (200) installed in the upper storage unit to axially assemble a paper pipe (J. B-1) of a jumbo toilet paper roll (J. B), a cutting blade (250) placed in the upper storage unit (110) to cut the jumbo toilet paper roll drawn out by the rotation of the one-directional rotary roll shaft (200), and an inspection window (310) which is hinge-coupled to one side of the upper storage unit (110) of the built-in container, is opened and closed by a one-touch button on the other side, and allows a user to check the amount of the remaining toilet paper roll (J. B) and replace the toilet paper roll; a lower cover (350) attached to the lower discharge unit (120) and having an outlet (360) formed thereon; and an fine dust-absorbing filter fabric (400) attached and detached from the inside wall of the lower discharge unit (120).
Patent KR-20150033152-A (KR)
IPC: H01L51/52
Filed: 2013-09-23
Abstract: According to an embodiment of the present invention, a method for repairing an organic light emitting display device includes the steps of: insulating an organic light emitting layer and a first switching element of a pixel having a failure from each other; short-circuiting a first dummy line which is adjacent to the pixel among multiple first dummy lines extending in a first direction and the organic light emitting layer at a first location of the first dummy line; short-circuiting the first dummy line and a second switching element which is a dummy element at a second location of the first dummy line; and insulating the inside of the first dummy line and the outside of the first dummy line that connect the first location and the second location from each other.
Patent KR-20150034878-A (KR)
IPC: C30B29/20
Filed: 2013-09-26
Abstract: The present invention is aimed at providing an ingot chamber lid comprising: a lid cover (10) which is arranged in an ingot chamber, in which a place for growing ingots is prepared, and has view ports (30) for checking the ingots grown in the place; and view port shields (40) which are supported by the lid cover (10) to shield the view ports (30). The view port shields (40) are combined with shafts (42) arranged in the lid cover (10) to be rotated so that the view port shields (40) rotate on the shafts (42), and so open and close the view ports (30), and the lid cover (10) comprises at least two view ports (30) and view port shields (40) to shield the respective view ports (30).
Patent KR-20150035075-A (KR)
Title: 올레핀 수지 조성물
IPC: H01L23/29
Filed: 2013-09-27
Abstract: 본 출원의 구현예들은 올레핀 수지 조성물, 광전자 장치용 봉지재의 제조 방법, 상기 조성물에 의하여 제조된 광전자 장치용 봉지재 필름, 광전자 장치 및 상기 광전자 장치의 제조 방법에 관한 것으로, 각종 광전자 장치에 포함되는 전면 기판 및 이면 시트와 우수한 접착력을 나타내며, 고온 조건에서 내열 내구성이 우수한 봉지재를 제공할 수 있다.  또한, 광전자 장치에서 캡슐화되는 광전자 소자 또는 배선 전극 등과 같은 부품 및 작업 환경에 악영향을 미치지 않고, 장치 제조의 작업성 및 경제성 등을 우수하게 유지할 수 있는 봉지재를 제공할 수 있다.
Patent KR-20150038795-A (KR)
Title: 맞춤형 기능성 베개
IPC: A47G9/10
Filed: 2013-09-30
Abstract: 본 발명은 기능성 베개에 관한 것으로, 그 주목적은, 사용자가 똑바로 누워서 수면을 취할 때, 안정적으로 머리 부분을 지지할 수 있도록 함과 동시에 모로 누워서 수면을 취할 때도 귀 부분에 가해지는 하중이 거의 작용하지 않음으로써 숙면을 취할 수 있도록 하는 맞춤형 베개를 제공하는 것이다.  
이러한 목적으로 이루어진 본 발명에 따른 기능성 베개는. 
직육면체 외형을 갖춘 중심부에 호형 요홈으로 형성된 후두안착부와; 
상기 후두안착부보다 높은 레벨로 양측에 대칭형으로 구비되는 측두지지부와; 
상기 측두지지부의 일단 길이 방향으로 구비되는 목지지부를 포함한다. 
이에 따라, 본 발명에 의하면, 사용자가 똑바로 누워서 수면을 취할 때, 안정적으로 머리 부분을 지지할 수 있도록 함과 동시에 모로 누워서 수면을 취할 때도 귀 부분에 가해지는 하중이 거의 작용하지 않아 귀 부분이 변형되지 않음으로써 숙면을 취할 수 있도록 함과 동시에 표준형 베개 본체에 높이 조절용 패드를 삽입할 수 있는 포켓이 구비된 커버에 개인별 체형에 따라 높이 조절용 패드를 삽입함으로써 개인별 체형에 꼭 맞는 맞춤형 베개를 제공하는 이점이 있다.
Patent KR-20150040572-A (KR)
IPC: H04L12/70
Filed: 2013-10-07
Abstract: The present invention relates to a device and a method for controlling group autonomous driving using non-competitive medium access between vehicles. The device for controlling group autonomous driving comprises: a frame configuration setting unit for setting the configuration of a frame including a communication channel which can be applied to the control of group autonomous driving; a synchronization unit for temporally synchronizing respective vehicles to enable the vehicles to perform group autonomous driving using the frame; and a competitive window allocation unit for allocating different competitive window values to the respective vehicles synchronized with a management slot in the frame, wherein the respective vehicles are controlled to participate in the group autonomous driving using the competitive window values allocated by the competitive window allocation unit.
Patent KR-20150042317-A (KR)
Title: 표면탄성파를 이용한 신경 세포 성장 측정 장치를 포함하는 세포 배양 모니터링 및 제어 시스템
IPC: C12M1/38
Filed: 2013-10-10
Abstract: 본 발명은 신경 세포 성장 측정 장치 및 이를 이용한 신경 세포 성장 측정 방법에 관한 것으로서, 본 발명의 신경 세포 성장 측정 장치는 압전 기판, 상기 압전 기판 상에 형성된 표면탄성파 발생부, 상기 압전 기판 상에 형성된 표면탄성파 수용부 및 상기 표면탄성파 발생부와 상기 표면탄성파 수용부 사이에 형성되는 신경 세포 성장부를 포함한다.
Patent KR-20150044691-A (KR)
IPC: C12N5/071
Filed: 2013-10-17
Abstract: The present invention relates to a method for inducing the differentiation of nephron progenitor cells (NPCs) from human pluripotent stem cells (hPSCs) and to a differentiation inducing composition used therefor. More specifically, the method includes a step of culturing the hPSCs in separate conditions to easily differentiate the hPSCs to the mesendoderms such as primitive streaks, intermediate nephron, and nephron progenitor cells which are crucial in developing a proper kidney. Accordingly, the present invention can develop differentiated renal progenitor cells which have the potential to be utilized in a cell replacement therapy for the treatment of damaged extensometers, mesoderm-based tissues, and structures thereof.
Patent KR-20150044744-A (KR)
IPC: H01H71/16
Filed: 2013-10-17
Abstract: The present invention relates to a gap adjusting method of a trip mechanism of a molded case circuit breaker and, more particularly, to a gap adjusting method of a trip mechanism of a molded case circuit breaker capable of easily adjusting a gap between a cross bar and a bimetal using an adjustment screw and removing an additional device. The gap adjusting method of the trip mechanism of the molded case circuit breaker according to one embodiment of the present invention includes the steps of: setting a reference gap between the cross bar and the bimetal; setting a compensation gap by measuring a trip stroke of an opening and closing device and the total resistance of the trip mechanism; locating a gap adjustment block to be separated from the cross bar by a gap according to the sum of the reference gap and the compensation gap; touching the gap adjustment block by rotating the adjustment screw assembled in the bimetal; and attaching the adjustment screw to the bimetal.
Patent KR-20150046501-A (KR)
IPC: A01B69/00
Filed: 2013-10-22
Abstract: The present invention relates to an apparatus for harvesting lotus roots, which collects lotus roots in the mud by high pressure water spray, and more specifically, to an apparatus for harvesting lotus roots, comprising: a body frame loading an engine; and a tracked running unit including a driving sprocket rotated by output of the engine, and a rubber track rotated by the driving sprocket. Also, the apparatus for harvesting lotus roots comprises: a water pump (230) installed on the body frame and operated by power of the engine; a water supply pipe (280) to spray water supplied form a water pump to a desired point; and a filter assembly (250) filtering foreign substances of water in lotus root plantation and connecting the same to the water pump. The water supply pipe is connected through the water pump and a soft connection hose (282), and can move in the longitudinal direction (A) by a hydraulic cylinder by being supported by a guide member (310). Also, the water supply pipe can rotate to the up and down direction (B) in a certain section by operation of the hydraulic cylinder, and to the horizontal direction (C) by operation of the hydraulic cylinder (360).
Patent KR-20150046636-A (KR)
IPC: G06F3/044
Filed: 2013-10-22
Abstract: The present invention relates to a mesh-type touch screen panel which can improve visibility, and more specifically, to a mesh-type touch screen panel having mesh patterns formed to cut metal mesh which consists of a plurality of first metal lines and a plurality of second metal lines formed to cross each other along a design line. The mesh patterns comprise: a plurality of first touch mesh patterns arranged side by side in a first direction; a plurality of second touch mesh patterns arranged side by side in a second direction crossing the first direction in a different layer with a plurality of first touch mesh patterns; a plurality of isolated first dummy mesh patterns arranged between the neighboring first touch mesh patterns; and a plurality of isolated second dummy mesh patterns arranged between the neighboring second touch mesh patterns, wherein a cutting line which cuts first and second metal lines of the metal mesh is set to have a zigzag form around the design line.
Patent KR-20150050205-A (KR)
Inventor: KIM SUN JU
IPC: B01D35/00
Filed: 2013-10-31
Abstract: Disclosed is a water purifier having an ultraviolet light emitting diode, comprising: a water introduction unit for being supplied with water to be purified; a filter unit for filtering the supplied water to be purified; and a water tank unit equipped with a ultraviolet light source unit irradiating the water purified from the filter unit with ultraviolet rays.
Patent KR-20150055488-A (KR)
Inventor: MOON JAE HO
IPC: G09F9/00
Filed: 2013-11-13
Abstract: Provided is an apparatus for manufacturing a protection window. The present invention relates to the apparatus for forming and manufacturing the protection window with a curved surface by heating a thin film glass. The apparatus for manufacturing the protection window includes a first forming part which loads the thin film glass, has a first mold made of porous materials, and is connected to a first vacuum suction line to generate a vacuum suction force on the first mold, a second forming part which is connected to a hot wind supply line to discharge hot wind to the thin film glass, has a second mold made of porous materials, and is directly arranged on the upper side of the first forming part, and a control unit which controls the opening and closing of the flow path of the hot wind supply line and the first vacuum suction line to perform the vacuum suction through the first mold and a hot wind discharge through the second mold. The tin film glass is formed along the curved surface of the first mold by heating the thin film glass interposed between the first mold and the second mold by the hot wind discharged from the second mold up to a softening temperature and forcedly attaching the thin film glass on the surface of the first mold by the vacuum suction force provided to the first mold.
Patent KR-20150055974-A (KR)
Inventor: JANG MIN WOO
IPC: C09D167/00
Filed: 2013-11-14
Abstract: The present invention relates to a matte heat-shrinkable polyester film. More specifically, the polyester film has excellent basis properties regarding the heat resistance, printing properties, solvent bonding properties, shrinkage uniformity, and stretching processability. The polyester film does not require an additional matt coating process for a coextruded base film. Accordingly, the present invention can ensure the time stability and reduce the costs. The polyester film has excellent antistatic performance and post-processability. According to the present invention, the matte heat-shrinkable polyester film includes coating layers formed by coating a matt coating composition on one or both surfaces of a polyester base film.
Patent KR-20150064615-A (KR)
Inventor: HUR DU KWON
IPC: B23Q17/22
Filed: 2013-12-03
Abstract: The present invention relates to a device for measuring the length of a milling machine tool. The device for measuring the length of a milling machine tool comprises: a measurement table for supporting a measurement surface plate; a measurement surface plate installed on the measurement table to put a tool and a height gauge thereon; a measurement arbor installed on the measurement surface table to be able to be attached and detached and supporting a tool; and a height gauge installed on the measurement surface table to be able to move and measuring the length of a tool. Accordingly, operation time can be reduced and productivity can be improved as the length of a milling machine tool can be measured more rapidly and more accurately near the device.
Patent KR-20150066266-A (KR)
Inventor: KIM PYEONG GI
IPC: C08L101/00
Filed: 2013-12-06
Abstract: The present invention relates to a thermoplastic resin composition for an outer panel for a vehicle body. The thermoplastic resin composition has electric conductivity and high heat resistance obtained by adding carbon nanotubes into a thermoplastic resin. According to the present invention, a light-weight product with excellent physical properties such as electrical conductivity and heat resistance can be manufactured by adding the carbon nanotubes into a thermoplastic resin composition used for the outer panel for the vehicle body. Accordingly, a metal material used for the outer panel for the vehicle body can be substituted by the thermoplastic resin composition. Consequently, efficiency of energy consumption is increased by making the outer panel have light weight; and the outer panel for the vehicle body which can have various designs can be manufactured as injection molding of the outer panel is possible.
Patent KR-20150067864-A (KR)
Inventor: LEE JUNG IL
IPC: G06F3/044
Filed: 2013-12-10
Abstract: The present invention relates to a touch panel module loaded to a display device, and more specifically to a touch panel module equipped with bridge combined multiple TDIs, capable of installing a touch panel module including an IC on a flexible printed circuit board (FPCB), as a master IC and at least one slave IC are connected by a bridge. The touch panel module comprises: a flexible circuit board equipped with a bonding area unit connected to the access pad at an end unit of one side; a master IC installed on the flexible circuit board, having multiple bonding pads connected to the bonding area unit through a lead, and transmitting a detect signal to a CPU core side of the device by detecting a touch input for each of the sensing electrodes; multiple bonding pads installed on the flexible circuit board and connected to the bonding area through a lead; and at least one slave IC which detects a touch input for each of the sensing electrodes and transmits the detect signal to the master IC.
Patent KR-20150069125-A (KR)
Inventor: HWANG GYU WON
IPC: G06F3/14
Filed: 2013-12-13
Abstract: The present invention relates to a user terminal containing a living organism scan and recognition application and a method for providing living organism information. The user terminal containing a living organism scan and recognition application according to the present invention comprises: a memory for storing living organism, i.e., information; a camera for acquiring image information; and a display for recognizing an object based on image information according to the driving of an living organism scan and recognition application and for comparing living organism information stored in the memory based on the recognized object and for acquiring and outputting living organism information.
Patent KR-20150069191-A (KR)
Inventor: JANG JAE KWAN
IPC: E02D29/14
Filed: 2013-12-13
Abstract: 맨홀 뚜껑 잠금 장치가 개시된다. 본 캠 기구를 이용한 맨홀 뚜껑 잠금 장치는, 내측면에 걸림홈이 형성되고, 내주연부에 걸림턱이 형성된 맨홀 뚜껑 받침; 및 상기 걸림턱에 안착되도록 하며 안내홀이 형성된 안내부와, 상기 안내부로부터 내측 방향으로 소정간격 이격되어 안착홀이 형성된 안착부가 저면에 구성되어진 맨홀 뚜껑;을 포함하고, 회전 조작을 가능하도록 하는 원형의 조작부와 상기 조작부가 잠김 위치 시 캠 로브가 상기 안내부을 향하도록 하고, 상기 조작부가 열림 위치 시 상기 안착부를 향하도록 하는 캠 형상을 갖는 구동부로 구성된 구동 장치;를 포함하며, 상기 안착부와 상기 구동부 사이에 환형의 작동돌부가 형성되고, 상기 안착부와 상기 작동돌부 사이에 끼워진 탄성 부재를 갖으며, 일단이 상기 안착홀에 끼워지고, 타단이 상기 안내홀에 끼워져 상기 걸림홈에 안착될 수 있도록 하며, 타면의 형상이 테이퍼된 작동부;를 포함하되 수밀 효과를 위해 개스킷 캡으로 상기 맨홀 뚜껑과 상기 조작부가 결합되는 것을 특징으로 한다. 이에 의해, 보다 손쉬운 개폐가 가능하고, 외부 충격이나 내부 수압에 의한 이탈을 방지하여 안전사고를 대비할 수 있으며, 보행자나 차량의 진행시 진동에 의해 발생하는 소음과 마모를 저감할 수 있고, 밀폐 시 별다른 조작 없이 탄성력에 의해 자동으로 잠금이 가능하여 사용자의 부주의로 인한 맨홀 뚜껑 열림 상태 방치를 미연에 방지할 수 있으며, 또한, 수밀 효과를 얻을 수 있게 된다.
Patent KR-20150069895-A (KR)
Inventor: LEE HYUN JUN
IPC: H05K1/05
Filed: 2013-12-16
Abstract: The present invention relates to an insulation resin composition for a printed circuit board and products manufactured by using the same. More specifically, the present invention provides an insulation resin composition for a printed circuit board with improved properties of a dielectric constant (Dk) and a dielectric loss (Df) while equally maintaining or improving properties of heat resistance and a thermal expansion coefficient through a resin composition comprising an epoxy resin with a Spiro bifluorene structure. In addition, provided is a printed circuit board applied with a substrate such as an insulation film, a prepreg, a copper clad laminate, etc., manufactured by using the same.