| EMAGIN CORPORATION Patent applications |
| Patent application number | Title | Published |
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| 20130069558 | STACKED, NON-INVERTED DIELECTRICALLY ISOLATED, ORGANIC LIGHT EMITTING DIODE DISPLAY FORMED ON A SILICON-ON-INSULATOR BASED SUBSTRATE AND METHOD OF SAME - A display and method of making a display, comprising first and second stacked, non-inverted, dielectrically isolated, organic light emitting diodes formed on a silicon on insulator substrate. The display includes a means for applying both a positive or negative voltage across the stack, and a common intermediate control node situated between the diodes. The control node is electrically connected through vias to receive a control voltage signal, such that altering the relationship between the control voltage signal and the voltage applied across the stack regulates the actuation of the individual diodes. | 03-21-2013 |
| 20130033199 | INDEPENDENTLY CONTROLLED STACKED INVERTED ORGANIC LIGHT EMITTING DIODES AND A METHOD OF MANUFACTURING SAME - An OLED apparatus is provided that includes a first electrode having a first polarity, and an electrode arrangement spaced apart from the first electrode and having a second polarity. The OLED apparatus also includes a first organic emissive layer interposed between the first electrode and the electrode arrangement, and a second electrode spaced apart from the electrode arrangement in a direction opposite the first electrode. The second electrode has the first polarity. The OLED apparatus further includes a second organic emissive layer interposed between the second electrode and the electrode arrangement, and a drive circuit for providing a first energizing signal to the first electrode and the electrode arrangement and a second energizing signal to the second electrode and the electrode arrangement. A method for manufacturing an OLED array is provided. | 02-07-2013 |
| 20120319564 | COLOR ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE - A color display device that increases the efficiency of use of white light emitted from an organic light-emitting diode (OLED) in producing an improved color display. The device includes a plurality of color OLED display pixels, which include an OLED, a color filter layer, and a color conversion matrix sandwiched between the OLED and the color filter layer. The color filter layer has a plurality of color filter elements including a red, green and blue color filter element. The array of subpixels comprised in the color conversion matrix is composed of semiconductor nanocrystals uniformly dispersed in an organic binding material, which may be employed in either down-emitting or up-emitting color OLED display devices. | 12-20-2012 |
| 20120313118 | ACTIVE-MATRIX ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE WITH SHORT PROTECTION - An active-matrix OLED display device, which reduces the adverse effects of short circuits across OLED devices in a densely packed array by having a thin-film resistive layer integrated in series with the OLED device. The OLED device includes a substrate, and first and second pixels situated proximate each other on the substrate. The first pixel comprises an OLED and means for preventing a failure of the first pixel due to a short from affecting the operation of the second pixel. The preventing means includes a resistor electrically connected in series with the OLED of the first pixel. The resistor is in the form of a thin-film resistive layer. The first pixel includes an anode, wherein the thin-film resistive layer is situated adjacent the anode. The anode and the thin-film resistive layer have substantially the same dimensions and are formed simultaneously. | 12-13-2012 |
| 20120249516 | Amoled microdisplay device with active temperature control - An active-matrix organic light-emitting diode microdisplay device having a temperature control system including a temperature sensor and a control means for regulating the temperature of the OLED. The temperature is regulated by a bias transistor within the circuit, operating as a function of the temperature of the panel, such that low panel temperatures cause an increase in voltage of the bias transistor which draws a higher current through the top voltage drive transistor for self-heating the area surrounding the OLED. | 10-04-2012 |
| 20120244774 | METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DIODE ARRAYS AND SYSTEM FOR ELIMINATING DEFECTS IN ORGANIC LIGHT EMITTING DIODE ARRAYS - A method for manufacturing an organic light emitting diode (OLED) array is provided that includes applying an energizing signal to at least one of the OLED pixels in the array. The energizing signal exceeds a threshold level. The method also includes reducing the energizing signal and identifying an OLED in the array that continues to remain energized. The method further includes irradiating the identified OLED to degrade the organic material in the OLED. A method of performing quality control in a manufacturing process of an OLED array is provided. The method includes determining an intensity, a time and a wavelength of radiation sufficient to render an OLED of the OLED array inoperative by degrading organic material in the OLED. A system of performing quality control in a manufacturing process of an OLED array is provided. A computer-readable medium having stored thereon computer-executable instructions is provided. | 09-27-2012 |
| 20110316413 | METHOD OF TUNING DISPLAY CHROMATICITY BY MIXING COLOR FILTER MATERIALS AND DEVICE HAVING MIXED COLOR FILTER MATERIALS - A color display is provided that includes a light emitting sub-pixel and a filter layer including first and second color filter materials. The first color filter material is adapted to reduce transmittance of visible light outside a first transmittance spectrum corresponding to a first color, and the second color filter material is adapted to reduce transmittance of visible light outside a second transmittance spectrum corresponding to a second color. The second color is different than the first color. A color display having a white-balanced pixel is provided. A method of white-balancing a light emitting device is provided. A method of reducing unwanted light output due to electrical leakage is provided to fall below a pre-determined threshold. An opaque layer may be interposed between the sub-pixels and/or may frame illuminated areas of sub-pixels, and may be a combination of red, green, and/or a blue filter material. | 12-29-2011 |
| 20110250708 | METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DIODE ARRAYS AND SYSTEM FOR ELIMINATING DEFECTS IN ORGANIC LIGHT EMITTING DIODE ARRAYS - A method for manufacturing an organic light emitting diode (OLED) array is provided that includes applying an energizing signal to at least one of the OLED pixels in the array. The energizing signal exceeds a threshold level. The method also includes reducing the energizing signal and identifying an OLED in the array that continues to remain energized. The method further includes irradiating the identified OLED to degrade the organic material in the OLED. A method of performing quality control in a manufacturing process of an OLED array is provided. The method includes determining an intensity, a time and a wavelength of radiation sufficient to render an OLED of the OLED array inoperative by degrading organic material in the OLED. A system of performing quality control in a manufacturing process of an OLED array is provided. A computer-readable medium having stored thereon computer-executable instructions is provided. | 10-13-2011 |
| 20110248244 | INDEPENDENTLY CONTROLLED STACKED INVERTED ORGANIC LIGHT EMITTING DIODES AND A METHOD OF MANUFACTURING SAME - An OLED apparatus is provided that includes a first electrode having a first polarity, and an electrode arrangement spaced apart from the first electrode and having a second polarity. The OLED apparatus also includes a first organic emissive layer interposed between the first electrode and the electrode arrangement, and a second electrode spaced apart from the electrode arrangement in a direction opposite the first electrode. The second electrode has the first polarity. The OLED apparatus further includes a second organic emissive layer interposed between the second electrode and the electrode arrangement, and a drive circuit for providing a first energizing signal to the first electrode and the electrode arrangement and a second energizing signal to the second electrode and the electrode arrangement. A method for manufacturing an OLED array is provided. | 10-13-2011 |
| 20110231126 | METHOD FOR PERFORMING QUALITY CONTROL ON AN ORGANIC LIGHT EMITTING DIODE DEVICE AND A METHOD FOR DETERMINING CURRENT LEAKAGE IN AN OLED SUB-PIXEL - A method is provided for performing quality control on an organic light emitting diode (OLED) pixel comprising three sub-pixels formed in parallel. A method is provided for determining an average current leakage for three sub-pixels of an OLED pixel. The method includes selecting a total luminance level, determining a first current flowing when a first sub-pixel is energized causing the OLED pixel to emit light having ⅓ total luminance. The method includes determining a second current flowing when the first sub-pixel and a second sub-pixel are energized causing the OLED pixel to emit light having a ⅔ total luminance. The method includes calculating average current leakage by multiplying the first current times two forming a first product, subtracting the second current from the first product forming a result, multiplying the result by two forming a second product, and dividing the second product by nine. A computer-readable medium is provided. | 09-22-2011 |
| 20110080442 | SYSTEM FOR COLOR SHIFT COMPENSATION IN AN OLED DISPLAY USING A LOOK-UP TABLE, A METHOD AND A COMPUTER-READABLE MEDIUM - A light emitting system is provided that includes an OLED pixel including at least two OLED sub-pixels having different associated color outputs, and at least one digitally accessible look-up table including energizing signal values for the at least two sub-pixels as a function of a desired color and a desired luminance intensity of the OLED pixel when energized. The light emitting system also includes a drive circuit adapted to access the at least one look-up table and able to independently energize the at least two OLED sub-pixels based on the energizing signal values obtained from the at least one look-up table. A method is provided for energizing an organic light emitting diode (OLED) pixel. A computer-readable medium is provided that stores a digitally accessible look-up table accessible by a drive circuit and for operating an organic light emitting diode (OLED) pixel. | 04-07-2011 |
| 20110080441 | METHOD OF DRIVING AN ORGANIC LIGHT EMITTING DIODE (OLED) PIXEL, A SYSTEM FOR DRIVING AN OLED PIXEL AND A COMPUTER-READABLE MEDIUM - A new drive scheme is provided for OLED displays that uses a pulsed drive mode. The pulsed drive mode results in a reduced duty cycle for pixel operation. The peak OLED current is increased correspondingly to maintain a constant average luminance over the frame period so that there is no brightness loss. The method, system and computer-readable medium according to the present innovation uses a blanking signal to set the OLED pixel to black by discharging a capacitive element prior to re-programming the OLED pixel during a next synchronization cycle. An organic light emitting diode (OLED) pixel system is provided. A computer-readable medium having stored thereon computer-executable instructions is provided. | 04-07-2011 |
| 20110074758 | DUAL-MODE AMOLED PIXEL DRIVER, A SYSTEM USING A DUAL-MODE AMOLED PIXEL DRIVER, AND A METHOD OF OPERATING A DUAL-MODE AMOLED PIXEL DRIVER - The present innovation provides a system for driving an OLED pixel that includes an arrangement for driving the OLED pixel in a voltage mode and an arrangement for driving the OLED pixel in a current mode. The system includes an arrangement for switching between the voltage mode and the current mode. When a selected luminance for the OLED pixel is high, the voltage mode may be selected by the switching arrangement, and when the selected luminance for the OLED pixel is low, the current mode may be selected by the switching arrangement. A driver circuit for an OLED pixel is provided. A method of driving an OLED pixel is provided that includes driving the OLED pixel in a voltage mode when a selected luminance for the OLED pixel is high. A computer-readable medium is provided having stored thereon computer-executable instructions that cause a processor to perform a method when executed. | 03-31-2011 |
