Abstract:
PURPOSE: A reflection penetration integrated display device for securing outdoor visibility is provided to improve the photonic efficiency about the quantity of the light and secure the outdoor visibility. CONSTITUTION: A light guide plate(130) guides the light coming out from a light source towards a light discharging surface. The light guide plate transmits the external light which is income in the light discharging surface. A color reflection plate(120) prepares in the light discharging surface of the light guide plate. A display panel(200) modulates the light reflected to the color reflector. The display panel forms the image.
Abstract:
A front light unit and a flat display device adopted with the front light unit are provided to display an image even without external light by adopting a separate light source, and to be made of an elastic material, thereby realizing a free bending effect. A front light unit(100) comprises as follows. A light source(110) is equipped. A light guide plate(120) guides light emitted from the light source, and has a rear side(122) from which the guided light is emitted and a front side(121) confronting with the rear side. Plural prism shape structures(123) are integratedly disposed on the rear side of the light guide plate, and emit totally reflected light from the front side of the light guide plate. The light guide plate and the prism shape structures are made of transparent and elastic materials.
Abstract:
Aflip-chip package for implementing a fine solder ball, and a flip-chip packaging method using the same. The flip-chip package includes a first wafer (100) having a first electrode and a first under bump metal (111,112) (UBM) formed on the first electrode and electrically connected to the first electrode; and second wafer (200) opposing the first wafer and having a second electrode located in a position corresponding to the first electrode, and a second UBM (211,212) formed of the second electrode and electrically connected to the second electrode. The first wafer (100) has a depression formed on one or more areas adjacent to the first UBM (111,112), which depression partly receives a solder ball (133a,134a) that connects the first (111,112) and the second UBMs (211,212) upon flip-chip bonding of the first (100) and second (200) wafers. Since the UBM is formed as an embossing pattern, a fine solder ball can be implemented. Additionally, the reliability of the package can be improved.
Abstract:
PURPOSE: An apparatus and a method for measuring a transmission delay in an MPLS(MultiProtocol Label Switching) domain are provided to measure a transmission delay time with respect to generated/deleted/changed LSP(Label Switched Path) and CR-LSP(Constraint Based-LSP) by using a probe packet. CONSTITUTION: An operator terminal(100) generates a transmission delay measurement request with respect to one specific path of different LSP paths set between two switch routers positioned at a boundary of an MPLS domain, and receives and displays a response to the request on a screen. An MAS(Maintenance and Administration System)(101) receives the transmission delay measurement request, generates a request data unit including information for discriminating the specific path and transmits it to a packet processor(103), and calculates the transmission delay time with respect to the specific path and transmits it to the operator terminal(100) when a response data unit with respect to the request data unit is received. The packet processor(103) converts the data unit received from the MAS(101) into an IP packet and transfers it to a forwarding engine(107-2), and converts an IP packet received from the forwarding engine(107-2) into a data unit of an application part and transfers it to the MAS(101). A label mapping table(108) stores MPLS label values with respect to LSP paths. The forwarding engine(107-2) reads an MPLS label value with respect to one specific path, MPLS-encapsulates the IP packet received from the packet processor(103), and transfers a probe packet to the other switch router. When the forwarding engine(107-2) receives a response packet with respect to the probe packet from the other switch router, it MPLS-decapsulates the response packet and transfers an IP packet to the packet processor(103).
Abstract:
두개의 공진판을 가진 마이크로 자이로스코프에 관해 기술된다. 마이크로 자이로 스코프는: 기판과; 상기 기판 상에 소정 높이로 상호 대향되게 설치되는 제1프레임과 제2프레임과; 상기 기판에 대해 상기 제1프레임과 제2프레임을 지지하는 복수의 앵커부와; 상기 제1, 제2프레임의 사이에 위치하며, 상호 소정거리 이격되어 있는 제1공진판과, 제2공진판; 상기 제1공진판과 제2공진판과 물리적으로 연결되며, 일측의 공진판의 움직임에 의해 타측의 공진판을 구속하되, 일측 공진판의 제1방향의 움직임에 의해 동작되어 타측 공진판을 상기 제1방향의 반대인 제2방향으로 동작시키는 매칭링크수단을; 구비한다. 본 발명의 마이크로 자이로스코프는 매칭링크부에 의한 자기공진매칭구조에 의해 공진판 간의 공진 주파수차를 제거하기 때문에, 공정 오차의 허용범위가 크고 그리고 제작하기 용이하며, 공진구조물의 신뢰성 및 선형성이 높고, 드라이빙 빔과 센싱빔의 분리에 의해 모드커플링을 방지할 수 있고, 따라서 센싱 감도를 높일 수 있다.
Abstract:
PURPOSE: A method for manufacturing a structure of a micro electro-mechanical system(MEMS) capable of wafer-level vacuum packaging is provided to prevent a sensor or actuator from being unstable during an operation by residual stress by using a single crystalline silicon as a structure layer, and to form a resonating structure having a high Q factor by forming a sufficiently thick structure for a heavy structure. CONSTITUTION: A multilayered structure including a signal line is stacked on the first wafer(100). The second wafer(900) is adhered to the stacked multilayered structure. The first wafer is polished by a predetermined thickness. A micro electro-mechanical system(MEMS) structure located inside a vacuum region and a pad(6) located outside the vacuum region are formed on the first wafer, connected to the signal line. A structure corresponding to the vacuum region of the MEMS structure is formed on the third wafer. The polishing surface of the first wafer and the third wafer are connected in vacuum surroundings.
Abstract:
PURPOSE: A micro gyroscope having two resonance plates is provided to reduce a difference in resonance frequency between resonance plates, to reduce error, to prevent a mode coupling effect due to interference between excitation mode and detection mode, and to maintain a high stability to thermal stress. CONSTITUTION: A micro gyroscope having two resonance plates includes a substrate(1), first and second frames(11,12) mounted on the substrate oppositely, a plurality of anchor parts(3) supporting the first and second frames, first and second resonance plates(21,22) located between the first and second frames and separated from each other in a prescribed interval, and a matching link part(40). The matching link part is physically connected to the first and second resonance plates, restricts one resonance plate by the movement of the other resonance plate. If one resonance plate moves in a first direction, the matching link part operates the other resonance plate in a second direction opposed to the first direction.