GLOBAL OLED TECHNOLOGY LLC Patent applications |
Patent application number | Title | Published |
20150262533 | PIXEL CIRCUIT AND DISPLAY DEVICE - To construct a data driver which is not easily affected by variations in transistor characteristics, a plurality of coupling capacitances are connected to a data enable line which may be set to at least two voltages. A plurality of bit transistors which are turned on and off in accordance with the display data of a plurality of bits controls the connection between the plurality of coupling capacitances and data enable line to control the total capacitance of the plurality of coupling capacitances. The display element operates in accordance with the voltage accumulated to the total capacitance of the coupling capacitance according to the difference between the two voltages which may be set on the data enable line. By the operations above, a display is controlled by multi-bit display data for each pixel. | 09-17-2015 |
20140239961 | PIXEL CIRCUIT, DISPLAY DEVICE, AND INSPECTION METHOD - Checking failures in transistors including driving transistors, switching transistors, and sampling transistors before light emitting elements are formed in a display device. I-V characteristics including threshold voltage of the driving transistor | 08-28-2014 |
20140218417 | DISPLAY DEVICE - A display device which effectively reduces the occurrences of a false contour is provided. A driver digitally drives each pixel by obtaining a plurality of bit data from pixel data for one pixel to assign the plurality of bit data to a corresponding subframe; configuring one frame with a predetermined number of unit frames; and supplying corresponding bit data in each unit frame to each pixel. Specifically, an analyzing circuit | 08-07-2014 |
20140184478 | DISPLAY DEVICE - To reduce the number of sub-frames and perform high resolution display with low power consumption, each of the pixels has a digital emission period Td and an analog emission period Ta, and is driven in a time-divided fashion in a digital manner or in an analog manner. Each of the pixels performs high resolution display when being driven in an analog manner, and performs display with low power consumption when being driven in a digital manner. | 07-03-2014 |
20140176006 | DISPLAY PANEL - An EL light-emitting element is driven digitally to reduce power consumption using a pixel having three transistors and two capacitors. A reset transistor for diode connection writes the threshold voltage of the drive transistor onto a coupling capacitor. The data voltage plus threshold voltage is then written onto the gate of the drive transistor. This reduces the amplitude of the data voltage required, further reducing power consumption. | 06-26-2014 |
20140151676 | OLEDS HAVING HIGH EFFICIENCY AND EXCELLENT LIFETIME - An OLED device comprises a cathode, an anode, and has therebetween a light-emitting layer wherein the light-emitting layer comprises (a) a 2-arylanthracene compound and (b) a light-emitting second anthracene compound having amino substitution at a minimum of two positions, wherein at least one amine is substituted at the 2 position of the second anthracene compound. | 06-05-2014 |
20140124012 | RADIANT ENERGY TRANSFER PANEL MOUNTINGS - An apparatus ( | 05-08-2014 |
20130021228 | PIXEL CIRCUIT AND DISPLAY DEVICE - [Problem to be solved] To achieve low power consumption. [Solution] The driving transistor T | 01-24-2013 |
20130016083 | PIXEL CIRCUIT, DISPLAY DEVICE, AND INSPECTION METHODAANM Maekawa; YuichiAACI Shagamihara-shiAACO JPAAGP Maekawa; Yuichi Shagamihara-shi JPAANM Miwa; KoichiAACI Yokohama-shiAACO JPAAGP Miwa; Koichi Yokohama-shi JP - Compensate for the variations of threshold voltage of a driving transistor. During the period of the reference signal voltage Vref being set to the signal line DTC, voltage between the gate and source of the driving transistor IOC is made equal to or greater than the threshold voltage of the driving transistor IOC, and the difference in voltage of the reference signal voltage Vref and the reference power supply voltage VreCr is charged to the retentive capacitance IOB. At the same time, the voltage of the source of the said driving transistor IOC is set to the reference power supply voltage VreCr to make the voltage applied to the said light emitting elements equal to or lower than its threshold voltage. Subsequently, while maintaining the voltage applied to the said light emitting elements IOE equal to or lower than its threshold voltage. | 01-17-2013 |
20120287171 | DISPLAY DEVICE - To alleviate an afterimage phenomenon caused by a hysteresis characteristic of a drive transistor. Current driven type light emitting elements | 11-15-2012 |
20120280962 | PIXEL CIRCUIT AND DISPLAY DEVICE - [Problem to be solved] Obtain a constitution for a data driver which does not easily affected by transistor characteristics. [Solution] A plurality of coupling capacitances | 11-08-2012 |
20120268501 | DISPLAY DEVICE - There is provided a display device in which disadvantageous effects due to unnecessary operations of an image lag alleviating function are minimized. In a display device of active matrix type, for each of the pixels arranged in a matrix, a current-driven emissive element is provided, and the current of the emissive element is controlled using a drive TFT so as to perform display. While a black display period during which an opposite bias voltage is applied between the gate electrode and the source electrode of the drive TFT is inserted in order to alleviate image lag, this insertion is performed only when a predetermined condition is satisfied, and is performed for a certain duration according to a command by a microcomputer ( | 10-25-2012 |
20120268354 | DISPLAY DEVICE - Embodiments relate to an organic EL panel comprising a panel driving circuit for converting R′G′B′W data into driving signals which is supplied to a pixel circuit. At a RGB→R′G′B′W converting section, the bit width of input RGB data is greater than the bit width of converted R′G′B′W, and the characteristic curve of the amount of luminescent of W sub pixel for the input data of W in the said panel driving circuit is different from the R′G′B′ curve normalized at a luminance ratio necessary for a reproduction of white color with sub pixels of RGB. An appropriate process is carried out by the RGB→R′G′B′W converting section in accordance with the curve of input data from the panel driving circuit verses amount of luminescent to minimize an error which may be generated when a conversion is made. | 10-25-2012 |
20120268353 | DISPLAY DEVICE - An object of the invention is to convert input RGB data to R′G′B′W data without suffering loss of gradations of the input RGB data. A display panel | 10-25-2012 |
20120176397 | DISPLAY DEVICE - The rate of reading from a memory for storing display irregularity correction data is lowered. At the time of display, calculation is carried out in a correction calculation section | 07-12-2012 |
20120169785 | DISPLAY DEVICE - A display device which effectively reduces the occurrences of a false contour is provided. A driver digitally drives each pixel by obtaining a plurality of bit data from pixel data for one pixel to assign the plurality of bit data to a corresponding subframe; configuring one frame with a predetermined number of unit frames; and supplying corresponding bit data in each unit frame to each pixel. Specifically, an analyzing circuit | 07-05-2012 |
20120113085 | DISPLAY DEVICE USING CAPACITOR COUPLED LIGHT EMISSION CONTROL TRANSISTORS - In order to efficiently execute threshold value compensation for a driving transistor, a coupling capacitor ( | 05-10-2012 |
20110279049 | DISPLAY DEVICE WITH COMPENSATION FOR VARIATIONS IN PIXEL TRANSISTORS MOBILITY - In order to efficiently execute threshold value compensation for a driving transistor, a coupling capacitor has one end connected to a data line. Another end of the coupling capacitor is connected to a selection transistor and one end of a reset transistor. A control terminal of a driving transistor is connected to the other end of the selection transistor, and an organic EL element is connected to this driving transistor via a light emission control transistor. A data voltage, corresponding to a gradation signal supplied to the data line, is written to a storage capacitor via the coupling capacitor, and with the selection transistor and the light emission control transistor in an off state and the reset transistor turned on, a compensation voltage corresponding to a degree of mobility of the driving transistor is written to the coupling capacitor. | 11-17-2011 |
20110203667 | FLUOROCARBON ELECTRODE MODIFICATION LAYER - An organic device including at least two electrodes; at least one organic active layer, wherein the organic active layer is disposed in between two electrodes; and an electrode modification layer, wherein the electrode modification layer is disposed in between two electrodes and in contact with one of the electrodes; and the electrode modification layer includes a fluorocarbon compound selected from the materials having a chemical structure of (C | 08-25-2011 |
20110199359 | DISPLAY PANEL - An EL light-emitting element is driven digitally to reduce power consumption using a pixel having three transistors and two capacitors. A reset transistor for diode connection writes the threshold voltage of the drive transistor onto a coupling capacitor. The data voltage plus threshold voltage is then written onto the gate of the drive transistor. This reduces the amplitude of the data voltage required, further reducing power consumption. | 08-18-2011 |
20110084993 | OLED DISPLAY PANEL WITH PWM CONTROL - A display panel which applies a PWM drive to a drive transistor ( | 04-14-2011 |
20110033973 | DEPOSITION APPARATUS FOR TEMPERATURE SENSITIVE MATERIALS - A system for the deposition of vaporized materials on a substrate is described, comprising at least first and second orientation-independent apparatuses for directing vaporized organic materials onto a substrate surface to form first and second films, each of the first and second orientation-independent apparatuses being arranged in a different relative orientation and comprising: a chamber containing a quantity of material; a permeable member at one end of the chamber with a heating element for vaporizing the material; and means for continuously feeding the material toward the permeable member as it is vaporized, whereby organic material vaporizes at a desired rate-dependent vaporization temperature at the one end of the chamber. A plurality of thin films may be deposited on a substrate using deposition apparatus in a variety of orientations. Such a design provides reduced costs and improved deposition rate control. | 02-10-2011 |
20100295758 | PIXEL CIRCUIT - To efficiently execute threshold value compensation for a driving transistor for an electroluminescent element. A first storage capacitor has a first terminal connected to a data line. A first terminal of a switching transistor and a first terminal of a reset transistor are connected to a second terminal of the first storage capacitor. The first storage capacitor is formed overlapping a data line. | 11-25-2010 |
20100277455 | DISPLAY DEVICE AND PIXEL CIRCUIT - A display device in which a plurality of pixels are arranged in a matrix form, corresponding to intersections of a plurality of data lines and a plurality of scan lines, wherein each pixel includes a light emitting element having a first electrode connected to a first power supply and which emits light according to a current that flows; a driving transistor having a source electrode connected to a second power supply and which supplies a drain current to a second electrode of the light emitting element; a data storage capacitor having a first electrode connected to a gate electrode of the driving transistor; and a first switch which is switched ON during a pixel selection period so that data of a data line is written to the data storage capacitor, and wherein a potential of a second electrode of the data storage capacitor is changed. | 11-04-2010 |
20100231485 | LED DEVICE HAVING IMPROVED LIGHT OUTPUT - A white light-emitting microcavity light-emitting diode device, comprising:
| 09-16-2010 |
20100231484 | LED DEVICE HAVING IMPROVED LIGHT OUTPUT - A light-emitting microcavity diode device includes a reflective electrode and a semi-transparent electrode, formed over a substrate, with an unpatterned light-emitting layer formed between the reflective electrode and the semi-transparent electrode. The reflective electrode, semi-transparent electrode, and unpatterned light-emitting layer form an optical cavity. Either the reflective or semi-transparent electrode is patterned to form independently-controllable, light-emitting sub-pixels. At least one, and fewer than all, of the sub-pixels emit light through a color filter. A first sub-pixel emits light having a first primary color and a second sub-pixel emits a complementary colored light. The light emitted from the first and second sub-pixels changes at one or more different angles. The color of the combined light of the first and second sub-pixels changes less at the one or more different angles than the light from at least one of the first or second sub-pixels. A third sub-pixel emits light through a color filter of a second primary color, different from the first primary color. | 09-16-2010 |