Abstract: An optical assembly, a backlight unit including the optical assembly, and a display device including the backlight unit are discussed.

Abstract: The present invention relates to a display device, which includes: a backlight unit that is divided into a plurality of blocks, driven for each of the divided blocks, and includes at least one optical assembly; a display panel that is disposed above the backlight unit; a controller that outputs local dimming values for each block corresponding to the brightness of the blocks in the backlight unit, in accordance with an image displayed on the display panel; and a BLU driver that controls the brightness of the blocks in the backlight unit, using the local dimming values for each block; in which the optical assembly includes: a first layer; a plurality of light sources formed on the first layer and emitting light; a second layer disposed above the first layer to cover the light sources; and a reflective layer that is disposed between the first and second layers, and the BLU driver outputs a plurality of driving signals in response to the input local dimming values for each block, and the driving signals each con

Abstract: A backlight unit and display device are discussed. According to an embodiment, a light generating device includes an array of light source devices disposed on a substrate and including first and second light source devices forming a first line, the first and second light source devices spaced apart from each other with a first distance and configured to emit light in a first direction; another array of light source devices disposed on the substrate and including third and fourth light source devices forming a second line, the third and fourth light source devices spaced apart from each other with a third distance and configured to emit light in a second direction which is different from the first direction, the second line being spaced apart from the first line so that the first light source device is spaced apart from the third light source device with a second distance therebetween.

Abstract: The present invention relates to a display device, which includes: a backlight unit that is divided into a plurality of blocks, is driven for each divided block, and includes at least one optical assembly; a display panel disposed on the upper side of the backlight unit; a controller that outputs a local dimming value for each block corresponding to brightness of each block of the backlight unit according to images displayed on the display panel; and a BLU driver that controls the brightness of the blocks of the backlight unit by using the local dimming value for each block, wherein the optical assembly includes a first layer; a plurality of light sources that is formed on the first layer to emit light; a second layer that is disposed on the upper side of the first layer and is formed to cover the plurality of light sources; and a reflective layer that is disposed between the first and second layers, and the BLU driver receives the local dimming value for each block to output the plurality of driving signals,

Abstract: A backlight unit and a display device including the backlight unit are discussed. According to an embodiment, a light generating device comprising: a first layer; light source devices disposed on the first layer and configured to emit light; a reflection layer disposed on the first layer and configured to reflect the light emitted from the light source devices; a second layer covering the light source devices and the reflection layer; a diffusion layer disposed on the second layer and configured to diffuse the light emitted from the light source devices; and an auxiliary layer having light shielding members placed between the second layer and the diffusion layer, the auxiliary layer being separated from the second layer so as to create an air space between a surface of the second layer and surfaces of the light shielding members, the air space extending along the light source devices.

Abstract: A backlight unit and a display device including the backlight unit are discussed. According to an embodiment, the invention provides a light generating device comprising: a first layer; a plurality of light source devices disposed on the first layer and configured to emit light, at least one of the light source devices including a light emitting diode for generating the light; a reflection layer disposed on the first layer and configured to reflect the light emitted from the light source devices; a second layer covering the light source devices and the reflection layer and configured to propagate the light reflected by the reflection layer, the second layer including a plurality of depressed portions, at least one of the depressed portions disposed between two adjacent light source devices among the plurality of light source devices; and at least one third layer disposed on the second layer and configured to diffuse the light propagated by the second layer.

Abstract: A backlight unit and a display device including the backlight unit are discussed. According to an embodiment, a light generating device comprising: arrays of light source devices arranged on a first layer and including a first light source device and a second light source device configured emit light in opposite directions, at least one of the first and second light source devices including: a housing having inclined inner walls that define a cavity, a light emitting diode disposed in the cavity and configured to generate the light, and at least one material filled in the cavity; a reflection layer disposed on the first layer and configured to reflect the light emitted from the light source devices; and a second layer covering the light source devices and the reflection layer.

Abstract: A light emitting device is disclosed. The light emitting device includes a reflective layer, a plurality of light emitting components disposed on the reflective layer, and a resin layer formed on the plurality of light emitting components and the reflective layer.

Abstract: An organic light emitting device is disclosed. The organic light emitting device includes a first substrate, a display unit that is positioned on the first substrate and includes a plurality of subpixels, a second substrate facing the first substrate, a seal member attaching the first substrate to the second substrate, and at least one projection. The seal member substantially has a water vapor permeation rate of 100 g/m2 day to 103 g/m2 day. The projection is positioned at a location corresponding to a bezel area of at least one of the first and second substrates.

Abstract: Embodiments of the present invention provide microelectromechanical systems (MEMS) switching methods and apparatus having improved performance and lifetime as compared to conventional MEMS switches. In some embodiments, a MEMS switch may include a resilient contact element comprising a beam and a tip configured to wipe a contact surface; and a MEMS actuator having an open position that maintains the tip and the contact surface in a spaced apart relation and a closed position that brings the tip into contact with the contact surface, wherein the resilient contact element and the MEMS actuator are disposed on a substrate and are movable in a plane substantially parallel to the substrate. In some embodiments, various contact elements are provided for the MEMS switch. In some embodiments, various actuators are provided for control of the operation of the MEMS switch.

Abstract: An organic light emitting device is disclosed. The organic light emitting device includes a first substrate, a display unit that is positioned on the first substrate and includes a plurality of subpixels, a second substrate facing the first substrate, a seal member attaching the first substrate to the second substrate, and at least one projection. The seal member substantially has a water vapor permeation rate of 100 g/m2day to 103 g/m2day. The projection is positioned at a location corresponding to a bezel area of at least one of the first and second substrates.

Abstract: A process for fabricating a MEMS device comprises the steps of depositing and patterning on one side of a wafer a layer of material having a preselected electrical resistivity; bonding a substrate to the one side of the wafer using an adhesive bonding agent, the substrate overlying the patterned layer of material; selectively removing portions of the wafer from the side opposite the one side to define stationary and movable MEMS elements; and selectively removing the adhesive bonding agent to release the movable MEMS element, at least a portion of the layer of material being disposed so as to be attached to the movable MEMS element.

Abstract: A MEMS device of the invention comprises a substrate and a pair of MEMS elements supported by the substrate, each of the MEMS elements having a bottom surface facing the substrate, a top surface and a side wall. The side walls are in spaced-apart, confronting relationship and the bottom surfaces are substantially coplanar. The bottom surface of each of the MEMS elements carries an electrically conductive layer, at least one of the pair of MEMS elements being movable relative to the other MEMS element to vary the spacing between the side walls.

Abstract: A structure and method for an optical switch is provided that includes providing sidewall electrodes with steerable micro-mirrors to position and control micro-mirror movement. The structure and method includes using the sidewall electrodes in conjunction with electrodes underlying a micro-mirror to sense capacitance present between a micro-mirror and underlying electrodes and/or sidewall electrodes, and driving the electrodes underlying the micro-mirror and the sidewall electrodes to move the micro-mirror into an angular position. The electrode structures and methods of driving them may be used in systems with closed loop feedback control to reduce transient mirror settling time and provide substantial immunity to system perturbations when micro-mirrors switch an optical signal from an input fiber to an output fiber of the optical switch, or when a micro-mirror is held at an angular position over long time scales.

Abstract: An optical code reader comprises an integrated optical resonator that is disposed within a housing and that includes a substrate, a cantilever beam, and a bimorph actuator. The cantilever beam is affixed at one end to the substrate, and at least a portion of the cantilever beam has a reflective transmit surface on one side and a photodetector on an opposite side. The bimorph actuator is affixed to the cantilever beam and is responsive to an electrical stimulus to cause the cantilever beam to move in accordance with the stimulus. Movement of the cantilever beam causes the reflective surface to cooperate with a light beam generated by a light source to provide a spot of light that moves on a code pattern, and also causes a field of view of the photodetector to be dynamically altered such that the photodetector tracks movement of the moving spot of light.

Abstract: A method of fabricating MEMS devices having a master/slave structure in which the motion of a signal device is slaved to a control device through the fabrication of a mechanical coupler. The preferred fabrication uses a backside dry etch to release the suspended MEMS devices and mechanical coupler.

Abstract: A high Q MEMS capacitor that can be continuously tuned with a large tuning ratio or reversibly trimmed using an electrostatic force. The tunable capacitor has a master/slave structure in which a control voltage is applied to the master (control) capacitor to set the capacitance of the slave (signal) capacitor to which an RF signal is applied via a suspended mechanical coupler. The master-slave structure reduces tuning error by reducing the signal capacitor's surface area and increasing its spring constant, and may eliminate the need for discrete blocking inductors by electrically isolating the control and signal capacitors. The trimmable capacitor provides an electrostatic actuator that selectively engages a stopper with teeth on a tunable capacitor structure to fix the trimmed capacitance.

Abstract: An integrated micro-electromechanical (MEM) optical resonator comprises a cantilever beam which is fixed to a substrate at one end and extends freely over the substrate at the other end, and a bimorph actuator stacked atop the beam at its fixed end. A reflective surface partially covers the top of the beam at its free end. The bimorph actuator comprises material layers having different thermal expansion coefficients. A DC-biased AC voltage connected across the actuator causes it to heat and cool as the current passing through it increases and decreases, creating a thermal bimorph effect which causes the cantilever beam and the reflective surface to oscillate in accordance with the varying current, preferably at the beam and actuator structure's fundamental resonant frequency. Combining the resonator with a light source and actuator excitation circuitry creates an optical scanner engine which delivers a scan angle in excess of 20 degrees and a scan rate of up to 2000 Hz, using a driving voltage of only 2 V.