Articulated Technologies, LLC Patent applications |
Patent application number | Title | Published |
20090267523 | DRIVER CIRCUIT FOR LIGHT SHEET MODULE WITH DIRECT CONNECTION TO POWER SOURCE - A light sheet module includes a light sheet having LEDs on a substrate and a driver circuit for the LEDs. The driver circuit includes a first control loop and a second control loop. The first loop contains TRIACS for regulating current from an external AC power source to the LEDs in response to trigger signals. A constant current circuit receives a command signal indicative of a target current in the LEDs, and generates the trigger signals. Current feedback circuitry generates a current feedback signal indicative of the actual current in the LEDs. The constant current circuit responds to the current feedback circuitry and adjusts the trigger signals so that the actual current in the LEDs more closely approaches the target current. The second control loop contains a Driver controller that generates the command signal and that is responsive to an input device for the Driver controller. | 10-29-2009 |
20090095963 | BARE DIE SEMICONDUCTOR DEVICE CONFIGURED FOR LAMINATION - A bare die semiconductor device, e.g., a bare die LED, includes a substrate having a bottom face and a bottom die electrode. There is also a top face having a top face edge, a top face area, a top face periphery and a top die electrode. A semiconductor material provides a p-n semiconductor junction between the top and bottom faces. The top die electrode inhibits an external top planar electrode from contact with the top face edges. Such bare die LEDs can be incorporated into a light sheet that has a transparent first substrate having a planar top electrode and a second substrate having a bottom substrate electrode. An adhesive secures the second substrate to the first substrate. Bare die LEDs are disposed in the adhesive with their top die electrodes contacting the top planar electrode and their bottom die electrodes contacting the bottom substrate electrode. | 04-16-2009 |
20080248191 | Organic and Inorganic Light Active Devices and Methods for Making the Same - A method for making a light active device, including providing a mixture of light active material and a monomer in a first region and a second region. The light active material includes a plurality of electro-statically active microcapsules each comprising OLED material encapsulated within a polymer shell. Chains of the electro-statically active microcapsules are formed in the first region. The monomer is cured to form a polymer in the first region and in the second region to lock the chains of the electro-statically active microcapsules in the first region. | 10-09-2008 |