Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for transmitting signals with a high data rate. In some implementations, an apparatus includes a first digital signal processor outputting first data at a first data rate. A second digital signal processor outputting second data at a second data rate. A filter circuitry receiving and up-sampling the first and second data. Additionally, the apparatus includes a combiner circuit that receives the first up-sampled data and the second up-sampled data, the combiner circuit combining the first and second up-sampled data to provide a multiplexed output, the multiplexed output having a third data rate that is greater than the first data rate or the second data rate.

Abstract: A display device for reducing a stress applied to a display panel in a folded state is provided. The display device includes a display panel and a panel support portion. The display panel includes a bendable area. The panel support portion is combined to the display panel and includes a multi-joint member supporting the bendable area. The multi-joint member includes joint portions that are sequentially arranged, and a sliding member passing through the joint portions and moving inside the panel support portion. The sliding member includes a plate portion for arranging the joint portions, and a hook-shaped portion connected to a side of the plate portion and arranging the joint portions in a circular arc shape.

Abstract: A display device reduces or minimizes a stress applied to a display panel in a folded state. The display device includes a display panel including a bendable area; and a panel support portion combined to the display panel and including a multi-joint member to support the bendable area, and the multi-joint member includes: a plurality of hard material portions sequentially arranged in a first direction, mutually combined to be rotated with respect to one another, and including a first surface arranged toward the bendable area; and a soft material portion contacting the first surface and fixed to the plurality of hard material portions.

Abstract: A display device reduces or minimizes a stress received by a display panel in a folded state. The display device includes a display panel including a bendable area; and a panel support portion combined to the display panel and including a multi-joint member to support the bendable area, and the multi-joint member includes a plurality of joint portions sequentially arranged in a first direction and combined to each other to rotate with respect to one another, and at least one of the joint portions includes an elastic plate at an edge of a support side arranged toward the bendable area.

Abstract: A display device for reducing a stress applied to a display panel in a folded state is provided. The display device includes a display panel and a panel support portion. The display panel includes a bendable area. The panel support portion is combined to the display panel and includes a multi-joint member supporting the bendable area. The multi-joint member includes joint portions that are sequentially arranged, and a sliding member passing through the joint portions and moving inside the panel support portion. The sliding member includes a plate portion for arranging the joint portions, and a hook-shaped portion connected to a side of the plate portion and arranging the joint portions in a circular arc shape.

Abstract: A foldable display device according to an exemplary embodiment includes: a display panel; a pair of rear surface supporters supporting a rear surface of the display panel; a fastener fastening the pair of rear surface supporters; and a pair of pivots respectively connecting the fastener and the pair of rear surface supporters, wherein a position of the pivot is determined by an equation below. Dh=Dm?(2×Oh)??[Equation] Here, Dm represents an interval when the pair of rear surface supporters are folded in parallel, Dh represents a horizontal distance between centers of the pair of pivots, Oh represents an offset of the pivot, and the offset of the pivot is a value obtained by subtracting an upper surface height of the rear surface supporter when the rear surface.

Abstract: In an organic light emitting diode (OLED) display device and a method for fabricating the same, OLED pixels are patterned through a photolithography process, so a large area patterning can be performed and a fine pitch can be obtained, and an organic compound layer can be protected by forming a buffer layer of a metal oxide on an upper portion of the organic compound layer or patterning the organic compound layer by using a cathode as a mask, improving device efficiency. In addition, among red, green, and blue pixels, two pixels are patterned through a lift-off process and the other remaining one is deposited to be formed without patterning, to the process can be simplified and efficiency can be increased.

Abstract: A terahertz wave fast modulator based on coplanar waveguide combining with transistor is disclosed. The terahertz waves are inputted through a straight waveguide structure, and then are coupled through a probe structure onto a core part of the present invention, which includes a suspended coplanar waveguide structure and a modulation unit with high electron mobility transistor, wherein the suspended coplanar waveguide structure is formed by three metal wires and a semiconductor substrate; and the modulation unit with high electron mobility transistor is located between adjacent metal transmission strips of the coplanar waveguide structure. Transmission characteristics of the terahertz waves in the coplanar waveguide structure are changed through the switching on/off of the modulation unit, so as to fast modulate the amplitudes and phases of the terahertz waves, and finally the modulated terahertz waves are transmitted through a probe—waveguide structure.

Abstract: An electroluminescent display device includes a substrate including first, second, and third sub-pixel regions; an interlayer insulating layer and a passivation layer each separately disposed at the first, second, and third sub-pixel regions on the substrate; a reflective electrode disposed on the passivation layer of each of the first, second, and third sub-pixel regions; first, second, and third dielectric layers disposed corresponding to the first, second, and third sub-pixel regions, respectively, on the reflective electrode; a first electrode disposed on each of the first, second, and third dielectric layers; an insulating pattern covering an edge of the first electrode; a light-emitting layer disposed on the first electrode and the insulating pattern and substantially all over the substrate including the first, second, and third sub-pixel regions; and a second electrode disposed on the light-emitting layer, wherein the first, second, and third dielectric layers have different thicknesses.

Abstract: An electroluminescent display device includes a substrate including a plurality of pixel regions; an air gap over the substrate and configured to separate the plurality of pixel regions; a first electrode in each of the plurality of pixel regions; an insulating pattern covering an edge of the first electrode; a light emitting portion on the first electrode and the insulating pattern; and a second electrode on the light emitting portion.

Abstract: An electroluminescent display device is disclosed. The disclosed electroluminescent display device includes a substrate including a plurality of pixel regions; a plurality of light emitting diodes spaced apart from each other on the substrate and each corresponding to the plurality of pixel regions, respectively; a plurality of encapsulation films respectively covering each of the light emitting diodes of the plurality of light emitting diodes, wherein the plurality of encapsulation films has a first refractive index; a first partition wall disposed between each of the encapsulation films of the plurality of encapsulation films, wherein the first partition wall corresponds to a boundary between the plurality of pixel regions and has a second refractive index lower than the first refractive index; and a color filter layer disposed on the plurality of encapsulation films and the first partition wall.

Abstract: A display device reduces or minimizes a stress applied to a display panel in a folded state. The display device includes a display panel including a bendable area; and a panel support portion combined to the display panel and including a multi-joint member to support the bendable area, and the multi-joint member includes: a plurality of hard material portions sequentially arranged in a first direction, mutually combined to be rotated with respect to one another, and including a first surface arranged toward the bendable area; and a soft material portion contacting the first surface and fixed to the plurality of hard material portions.

Abstract: In an organic light emitting diode (OLED) display device and a method for fabricating the same, OLED pixels are patterned through a photolithography process, so a large area patterning can be performed and a fine pitch can be obtained, and an organic compound layer can be protected by forming a buffer layer of a metal oxide on an upper portion of the organic compound layer or patterning the organic compound layer by using a cathode as a mask, improving device efficiency. In addition, among red, green, and blue pixels, two pixels are patterned through a lift-off process and the other remaining one is deposited to be formed without patterning, the process can be simplified and efficiency can be increased.

Abstract: The present invention also discloses a multi-DOF (Degree of Freedom) large-stroke high-precision motion platform system using the guide mechanism. A large load-bearing guide mechanism comprises: a rigid frame for generating a large-stroke displacement to realize high-speed motion; a core motion platform connected with a motion portion of a non-contact actuator, connected with the rigid frame by a primary flexible hinge group and a secondary flexible hinge group, and used for generating a small-stroke precise displacement by elastic deformation of the flexible hinge groups under driving of the actuator.

Abstract: A disclosed subsurface electromagnetic field monitoring system includes at least one fiberoptic cable to optically communicate measurements from an array of electromagnetic field sensors in a borehole. The array of electromagnetic field sensors includes a distributed feedback fiber laser strain sensor with electromagnetic field sensitivity.

Abstract: A system for measuring subterranean physical properties, in some embodiments, comprises a source of broadband light, an input optical fiber coupled to the source of broadband light, a wavelength division demultiplexer coupled to the input optical fiber, a plurality of detectors arranged in parallel and coupled to the demultiplexer, a wavelength division multiplexer coupled to the plurality of detectors, and an output optical fiber coupled to the multiplexer.

Abstract: Constant modulus multi-dimensional modulation system and methods are disclosed herein, employing multi-intensity quadrature amplitude modulation (QAM) to generate a dual-polarization symbol. j bits may be mapped to one of a plurality of dual-polarization symbols having a same constant power modulus on a two-level constellation including first and second intensity rings in a four-dimensional (4D) space including in-phase (I), quadrature (Q), X polarization (Xpol) and Y polarization (Ypol). A first bit of the j bits may indicate that the symbol is on the first intensity ring for the Xpol and the second intensity ring for the Ypol, a next k bits may indicate a location of the symbol on the first intensity ring in the Xpol, and a remaining j?k?1 bits may indicate a location of the symbol on the second intensity ring in the Ypol. Maximum correlation decoding may be used to decode the first symbol at the receiver.

Abstract: A foldable display device includes a display panel and a panel supporting unit. The display panel has a first surface in which a display unit is positioned and a second surface opposite to the first surface and including a bendable region. A panel supporting unit faces the second surface and is coupled to the display panel. The panel supporting unit includes a plurality of link members arranged in parallel along a first direction by corresponding to the bendable region of the display panel in an unfolded state, each of the plurality of link members respectively having a first supporting surface facing the display panel and coupled to be rotated about two rotational axes in a folded state. The two rotational axes of each of the plurality of link members are separated from the first supporting surface in a direction from the second surface toward the first surface.

Abstract: An interrogation system may be coupled to a fiber-optic cable positioned in a wellbore to interrogate a plurality of optical sensors coupled to the fiber-optic cable. The interrogation system may include an optical frequency comb source having a plurality of narrowband optical carriers transmitting light to the plurality of optical sensors. Each of the plurality of optical sensors may include a pair of partial reflectors to reflect the light transmitted by the optical frequency comb to one or more optical receivers to receive the reflection signals In some aspects, the interrogation system may include a de-interleaver device for separating reflected light signals having adjacent wavelength into separate optical waveguides. In additional aspects, interrogation system may also include a data processing system having a processing device for performing interferometric measurements using the reflected light signals.

Abstract: Constant modulus multi-dimensional modulation system and methods are disclosed herein, employing multi-intensity quadrature amplitude modulation (QAM) to generate a dual-polarization symbol. j bits may be mapped to one of a plurality of dual-polarization symbols having a same constant power modulus on a two-level constellation including first and second intensity rings in a four-dimensional (4D) space including in-phase (I), quadrature (Q), X polarization (Xpol) and Y polarization (Ypol). A first bit of the j bits may indicate that the symbol is on the first intensity ring for the Xpol and the second intensity ring for the Ypol, a next k bits may indicate a location of the symbol on the first intensity ring in the Xpol, and a remaining j?k?1 bits may indicate a location of the symbol on the second intensity ring in the Ypol. Maximum correlation decoding may be used to decode the first symbol at the receiver.