摘要:
A system and method are provided for designing a waveguide with uniform light extraction. Due to the complex nature of the calculations required, the method may be enabled as a set of software instructions, stored as a sequence of steps in a non-transitory memory for execution by a processor. The method accepts parameters for a waveguide panel, light sources, and light extraction features associated with the waveguide panel. Also accepted as an input are target light extraction goals. The method divides the waveguide panel into n subpanels, where n is an integer greater than 1. For each subpanel, waveguide propagation restrictions are defined. The light extraction features are modeled for each subpanel in response to the target extraction goals, and the waveguide, panel is designed using the light extraction features modeled for each subpanel.
摘要:
A system and method are provided for using bubble structures to control the extraction of light from a waveguide top surface. The method determines a maximum angle (α) of light propagation through a waveguide medium relative to a first horizontal direction parallel to a waveguide top surface. A plurality of bubble structures is provided having a refractive index less than the waveguide medium. The bubble structures have a base, and sides formed at an acute angle upwards with respect to the base. The bubble structure bases are separated by gap (W), have a height (H), and have a top separated from a waveguide top surface by a space (h). The method varies the gap (W), the height (H), and the space (h). In response, the intensity of light extraction at even the maximum angle (α) of light propagation, can be controlled from the waveguide top surface.
摘要:
A switchable viewing angle display method is provided. The method provides a front panel array of display pixels. Also provided is an array of microlenses underlying the array of display pixels. Each microlens has a focal point and each microlens is associated with a corresponding block of display pixels. A backlight panel has an edge-coupled waveguide pipe with an optical input connected to a column of light emitting diodes (LEDs). The backlight panel includes a top array of selectively enabled extraction pixels, a planar mirror underlying the waveguide pipe, and a bottom array of selectively enabled extraction pixels interposed between the waveguide pipe and the planar mirror. In response to accepting a display viewing angle change command, an extraction pixel is enabled from either the top array or the bottom array, and a waveguide pipe light extraction position is formed, changing the viewing angle.
摘要:
A switchable viewing angle display method is provided, using arrayed microlenses and a waveguide pipe with selectable light extraction positions. The method provides a front panel array of display pixels. Also provided is an array of microlenses underlying the array of display pixels. Each microlens has a focal point and each microlens is associated with a corresponding block of display pixels. A backlight panel has an edge-coupled waveguide pipe with an optical input connected to a column of light emitting diodes (LEDs). The backlight panel includes an array extraction pixels, each extraction pixel underlying a corresponding microlens, and the backlight panel also includes a planar mirror underlying the waveguide pipe. In response to a display viewing angle change command, a waveguide pipe's light extraction position selected, which is the distance between the extraction pixels and their corresponding microlenses, and the display viewing angle is changed.
摘要:
A dynamic light emitting diode (LED) driving current compensation method is provided for ensuring cross-panel backlight illumination uniformity in a display device. A backlight panel includes a plurality of waveguide pipes and a front panel with a plurality of pixel rows. Each row overlies a corresponding waveguide pipe and includes a plurality of selectively enabled pixels formed in a sequence along the row. Light is supplied from a plurality of LEDs, where each LED supplies light to a corresponding waveguide pipe. For each front panel row, a pixel is selected for enablement and an LED drive current is selected in response to the enabled pixel. The LED drive current is selected in response to the distance between the waveguide pipe position underlying an enabled pixel in a corresponding front panel row and the first light interface.
摘要:
A light emitting device using a silicon (Si) nanocrystalline Si insulating film is presented with an associated fabrication method. The method provides a doped semiconductor or metal bottom electrode. Using a high density plasma-enhanced chemical vapor deposition (HDPECVD) process, a Si insulator film is deposited overlying the semiconductor electrode, having a thickness in a range of 30 to 200 nanometers (nm). For example, the film may be SiOx, where X is less than 2, Si3Nx, where X is less than 4, or SiCx, where X is less than 1. The Si insulating film is annealed, and as a result, Si nanocrystals are formed in the film. Then, a transparent metal electrode is formed overlying the Si insulator film. An annealed Si nanocrystalline SiOx film has a turn-on voltage of less than 20 volts, as defined with respect to a surface emission power of greater than 0.03 watt per square meter.
摘要:
Colloidal-processed Si particle devices, device fabrication, and device uses have been presented. The generic device includes a substrate, a first electrode overlying the substrate, a second electrode overlying the substrate, laterally adjacent the first electrode, and separated from the first electrode by a spacing. A colloidal-processed Si particle layer overlies the first electrode, the second electrode, and the spacing between the electrodes. The Si particle layer includes a first plurality of nano-sized Si particles and a second plurality of micro-sized Si particles.
摘要:
A method is provided for fabricating a semiconductor nanoparticle embedded Si insulating film for short wavelength luminescence applications. The method provides a bottom electrode, and deposits a semiconductor nanoparticle embedded Si insulating film, including the element of N, O, or C, overlying the bottom electrode. After annealing, a semiconductor nanoparticle embedded Si insulating film has a peak photoluminescence (PL) at a wavelength in the range of 475 to 750 nanometers.
摘要:
The present invention provides a method and apparatus for facilitating communication with non-fault tolerant network nodes in a fault-tolerant network environment. In various embodiments, a network address or network location of any network nodes present on a network that are not fault-tolerant is determined and stored, and data intended for the detected non-fault-tolerant network nodes is routed only over that network to which the non-fault-tolerant network node is connected. In further embodiments, the fault-tolerant network comprises a primary and redundant network with fault tolerant network nodes that are attached to each network; a non-fault-tolerant network node that is attached to either the primary or redundant network is then operable to communicate with any fault-tolerant network node via data sent over only the network to which the non-fault-tolerant network node is connected.
摘要:
A global resource manager is provided for each node of a plurality of nodes of a distributed data processing system. Each node can be a coordinator node, an intermediate node, and a leaf node depending on the node at which a session arrives for global processing. In response to the arriving sessions, the global resource managers implement ripple scheduling by conducting a global QoS negotiation and adaptation, and preemption if necessary, in order to determine if the arriving session is supportable by the distributed data processing system. More specifically, the resource managers of all nodes determine whether their corresponding nodes can support the arriving session. The resource managers of the coordinator node and all intermediate nodes request their child nodes to indicate whether the child nodes can support the arriving session. The resource managers of all intermediate nodes and all leaf nodes respond to their coordinating or intermediate nodes with an indication of supportability. The resource manager of the coordinator node sends a commit message if all nodes can support the arriving session.