Abstract:
A lighting device is provided comprising a chip-on-board (COB) light emitting diode (LED) light source, a light source encapsulant, a quantum dot distributed color conversion medium, and a quantum dot glass containment plate. The COB LED light source comprises at least one LED and defines a light source encapsulant cavity in which the light source encapsulant is distributed over the LED. The quantum dot glass containment plate is positioned over the light source encapsulant cavity and contains a quantum dot distributed color conversion medium. The distributed color conversion medium comprises a quantum dot structure and is distributed in two dimensions over an emission field of the lighting device within the quantum dot glass containment plate.
Abstract:
A lighting device is provided comprising a chip-on-board (COB) light emitting diode (LED) light source, a phase transfer fluid disposed in a hermetically sealed phase transfer fluid chamber, a phase transfer fluid wicking structure, a distributed color conversion medium, and a glass containment plate. The color conversion medium is distributed in two dimensions over an emission field of the lighting device within the glass containment plate. The COB LED light source comprises a thermal heat sink framework and at least one LED and defines the hermetically sealed phase transfer fluid chamber in which the phase transfer fluid is disposed. The phase transfer fluid wicking structure is transparent to the operating wavelength bandwidth of the LED and is configured within the hermetically sealed phase transfer fluid chamber to encourage transport of phase transfer fluid, permit vaporization of transported phase transfer fluid, and receive condensed phase transfer fluid vapor.
Abstract:
A touch system for sensing a touch event that includes a transparent sheet having opposite upper and lower surfaces and an index of refraction n 2 . The system also has at least one light source that emits light. The light source is operably arranged in optical communication with the transparent sheet to cause the light to travel within the transparent sheet by total-internal reflection (TIR). At least one detector is operably arranged to detect the TIR-traveling light and to detect an amount of attenuation in the TIR-traveling light caused by the touch event. An interface layer is disposed on the lower surface of the transparent sheet. The interface layer has a refractive index n 1 , wherein n 1 2 , and has a thickness of equal to or greater than 1 micron. The interface layer obviates the need for an air gap when interfacing the touch system to a display unit of display device.
Abstract:
A glass-coated gasket (212) comprises a gasket main body (116) defining an inner hole (114) and having a first contact (118) surface and a second contact surface (119) opposite the first contact surface (118), and a glass layer formed over at least a portion of one of the first contact surface (118) and the second contact surface (119). The glass layer comprises a low melting temperature glass. A hermetic package comprises a substrate/glass-coated gasket/substrate structure that can be sealed using a thermo-compressive sealing step.
Abstract:
An optical touch screen that utilizes a planar transparent sheet and that is configured to determine the position of a touch event on the transparent sheet is disclosed. Light-source elements and light-sensing elements are operably disposed at a perimeter of the transparent sheet. Light is detected over lines-of-sight between the light-source elements and the light- sensing elements. Attenuated lines-of-sight due to the touch event are determined. Central lines are established based on the attenuated lines-of-sight. The locations of central-line intersections are then established. The average of the locations of the central-line intersections is then used to establish the location of the touch event.