Patent application number | Description | Published |
20090289966 | DISPLAY APPARATUS AND DRIVE METHOD THEREOF - A display apparatus for driving light emitting elements to emit light at a timing shifted according to the order of scanning lines, is arranged to control the light emission intensity of the light emitting element in accordance with an image signal and include a drive unit for driving the light emitting elements of the respective scanning lines in a light emission pattern including a first impulse operation period light emission pattern and a second impulse operation period light emission pattern. | 11-26-2009 |
20100128160 | DISPLAY APPARATUS - A display apparatus including: data lines; scanning lines arranged to cross the data lines; pixel circuits arranged along the data lines and the scanning lines, such that each of the pixel circuits corresponds to each of intersections between the data lines and the scanning lines; image signal lines for transmitting image signal; and switches, each arranged correspondingly to each of the data lines, for connecting each of the data lines to each one of the image signal lines, wherein the data lines are arranged such that adjacent two data lines are close to each other, and are connected simultaneously by the switches to different two of the image signal lines. | 05-27-2010 |
20100270678 | SEMICONDUCTOR DEVICE - A semiconductor device including a plurality of circuits that includes a transistor, where a semiconductor layer forming the transistor includes a first contact pad, a first part that is connected to the first contact pad and that extends in a direction intersecting a short direction of a pitch with which the circuits are arranged, a second part that extends from the first part in the short direction, and a second contact pad including the first part and the second part that are provided between the first contact pad and the second contact pad, where the second part overlaps an electrode layer across an insulating layer. | 10-28-2010 |
20100328365 | SEMICONDUCTOR DEVICE - A display apparatus includes: a light emitting element, a source which supplies a current to the light emitting element from a drain; a capacitor one end of which is connected to a gate of the transistor; a gate voltage setting circuit detachably connected to the gate of the transistor, the gate voltage setting circuit setting the gate voltage of the transistor to an initial voltage; and a capacitor terminal voltage setting circuit which is connected to another end of the capacitor, and which sets the voltage of the another end of the capacitor to any of data voltage corresponding to image information and constant reference voltage which does not depend on the image information, wherein a range, in which a current flowing through the light emitting element varies depending on the data voltage, is adjusted by changing one of the initial voltage and the reference voltage. | 12-30-2010 |
20110001689 | ACTIVE MATRIX TYPE DISPLAY APPARATUS - A light emitting element is provided to allow for resetting a shift register while keeping a frame narrow without increasing complexity of a shift register circuit. A display apparatus has a data line, a scanning line, a pixel circuit, a shift register circuit, a first power supply supplying a voltage to the shift register circuit and a second power supply supplying a voltage to the pixel circuit. One end of the scanning line is connected to an output of the shift register circuit, and writing of a data signal from the data line to the pixel circuit can be controlled by a scanning signal from the scanning line. When the first power supply is on, any one of a high-level signal and a low-level signal is input into the shift register circuit for the number of stages of the shift register, and thereafter, the second power supply is turned on. | 01-06-2011 |
20110025653 | DISPLAY APPARATUS AND METHOD FOR DRIVING THE SAME - A method for driving a display apparatus uses self luminous elements that allows for favorable display by suppressing a luminance variation accompanying change of a total current amount at a time of on-off drive. In a display apparatus that performs periodic on-off drive, pixels are divided into at least two groups having different light emitting timings with the timing for writing data to the pixels as a reference. Light emission is controlled so that when one group does not emit light, the other group emits light. Alternatively, light emission is controlled so that when one group emits light, the other group does not emit light. In this manner, either the period in which the two groups do not flow current at the same time or the period in which the two groups flow current at the same time hardly exists in one field period. | 02-03-2011 |
20110102305 | LIGHT-EMITTING DEVICE - A light-emitting device includes a plurality of pixels including an organic electroluminescent element, a drive transistor driving the organic electroluminescent element, and a hold capacitor holding a control signal for controlling the drive transistor, the organic electroluminescent element being electrically connected to one of a source electrode and a drain electrode of the drive transistor. The hold capacitor includes a metal layer, an insulating layer, and a semiconductor layer in this order. The semiconductor layer receives light emitted from the organic electroluminescent element. One of the metal layer and the semiconductor layer of the hold capacitor is electrically connected to a gate electrode of the drive transistor, and the other of the metal layer and the semiconductor layer of the hold capacitor is specified at a fixed potential. | 05-05-2011 |
20110148847 | METHOD OF DRIVING DISPLAY APPARATUS - The display apparatus includes a light emitting element, a transistor that determines a current supplied from a power supply line to the light emitting element depending on a gate voltage of the transistor, a capacitor that holds the gate voltage of the transistor, a first circuit unit configured to allow the capacitor to hold a voltage of a data line, and a switch operable to cut off the current. The display apparatus further includes a second circuit unit that operates such that when a change occurs in voltage across the light emitting element as a result of turning off the current, a voltage proportional to the difference in the voltage across the light emitting element with respect to the voltage obtained before the current was cut off is added to the voltage held in the capacitor, and a resultant voltage is applied to the gate of the transistor. | 06-23-2011 |
20110234083 | LIGHT EMITTING APPARATUS - In a light emitting apparatus including a plane-shape light emitting area, a power supply area extending along the light emitting area, and a power supply voltage feeding part configured to feed a power supply voltage to the power supply area. The power supply area supplies a current to the light emitting area across an edge of the power supply area facing the light emitting area. The power supply voltage feeding part is connected to a power supply port provided on another edge of the power supply area opposite to the light emitting area. The power supply area includes a first non-conductive area surrounded by a conductive area located on a shortest path from the power supply port to the edge of the power supply area facing the light emitting area. | 09-29-2011 |
20110310083 | DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME - A display device including self-luminous emitting elements configured to suppress a display unevenness due to a transistor variation and reduce a noise when transmitting a gradation data to a pixel circuit, wherein the pixel circuit includes a driving transistor and a first switch transistor electrically connecting a gate electrode of the driving transistor with a drain electrode thereof, in which the gate electrode of the first switch transistor can be electrically connected to a data line, and the gate electrode controls a time period for which the first switch transistor conducts according to the gradation data and writes the gradation data on the pixel circuit. | 12-22-2011 |
20120086742 | DISPLAY APPARATUS - A gradation display apparatus includes: a plurality of pixels, each including a light emitting element, a driving transistor, and a storage capacitor; a data line; a reference voltage line; and a control circuit. During a one frame period, the control circuit supplies a data voltage to each of the pixels through the data line, to write the data voltage in the storage capacitor, and, thereafter, supplies to the reference voltage line respectively different first and second voltages successively in this order or reversed order, so that, in each of the pixels, a sum of a light emitting quantity of the light emitting element during a period of supplying the first voltage and a light emitting quantity of the light emitting element during a period of supplying the second voltage equals to a predetermined light emitting quantity of the light emitting element predetermined according to image data. | 04-12-2012 |
20120112642 | ORGANIC ELECTROLUMINESCENT APPARATUS - In a display apparatus, at least three light emitting elements included in each pixel are classified into a light emitting element(s) of which anode(s) is the common electrode and a light emitting element(s) of which cathode(s) is the common electrode. The combination of classification of at least three light emitting elements is a combination that minimizes a difference between the total value of current flowing, during an emission in the maximum luminance, in the light emitting element(s) of which anode(s) is the common electrode and the total value of current flowing, during an emission in the maximum luminance, in the light emitting element(s) of which cathode(s) is the common electrode. | 05-10-2012 |
20120127064 | ORGANIC ELECTROLUMINESCENT DISPLAY APPARATUS - Provided is a display apparatus that can select either an “outdoor visibility mode” or a “wide viewing angle mode” or either a “power saving mode” or a “wide viewing angle mode” depending on a user scene; that can also select intermediate states between the two modes; and provide high displayed image quality. An organic electroluminescent display apparatus of the present invention includes a plurality of pixels, an organic electroluminescent element, a data line driver, a pixel circuit, and a gate line driver, in which each pixel includes two organic electroluminescent elements that emit light of the same color, an element with high light-collecting property is disposed over a light emission side of only one of the two organic electroluminescent elements, and units that make a difference in lighting times or drive currents between the two organic electroluminescent elements are included. | 05-24-2012 |
20120127221 | ORGANIC ELECTROLUMINESCENCE DISPLAYING APPARATUS - An organic EL displaying apparatus which suppresses a defective display caused by a leak current at a time when an emission period controlling transistor is off is provided. The organic EL displaying apparatus comprises a plurality of pixels each of which includes an organic EL element, a power supply line, a driving transistor and the emission period controlling transistor, a data line, and a control line. In this apparatus, in a certain one of the pixels, a resistance R | 05-24-2012 |
20120133683 | ORGANIC EL DISPLAY APPARATUS - An organic EL display apparatus includes a plurality of pixels, organic EL devices, a data line driver, a pixel circuit, and a gate line driver. Each pixel has three or more organic EL device groups, each organic EL device group consisting of two organic EL devices emitting light of the same color; and emits light of three or more colors. The two organic EL devices are a first organic EL device having a light condensing element arranged on the light emitting surface side and a second organic EL device not having a light condensing element arranged on the light emitting surface side. Each pixel has a luminance difference forming unit for varying the luminance ratio of each color in the first organic EL device and the luminance ratio of each color in the second organic EL device. | 05-31-2012 |
20120139978 | ORGANIC EL DISPLAY APPARATUS AND DRIVING METHOD OF THE SAME - An organic EL display apparatus comprises a plurality of pixels, each having first and second sub pixels; an organic EL element provided for each sub pixel; a data line driver; a pixel circuit; and a gate line driver. Each pixel includes a first organic EL element arranged in a first sub pixel emitting light of the same color; and a second organic EL element arranged in a second sub pixel. The light-extraction efficiency of the second sub pixel is higher than that of the first sub pixel. At least one of a plurality of transistors applies a drive current. The reference voltage line driver supplies a reference voltage to a gate terminal of the drive transistor to perform gradation displaying on the first organic EL element at a light emitting level, and to perform gradation displaying on the second organic EL element by controlling the light emitting period. | 06-07-2012 |
20130222440 | PIXEL CIRCUIT AND DRIVING METHOD THEREOF - A pixel circuit with a source follower type connection is provided that corrects variation in threshold voltage of a driving transistor, reduces power consumption and realizes high resolution. The pixel circuit includes: a data line for supplying a data voltage; a power source line for supplying a power source voltage; a reference voltage line for supplying a reference voltage lower than the power source voltage; a plurality of control signal lines for supplying control signals; a light emitting element; a driving transistor; a capacitor; and a plurality of switching transistors. The circuit writes the data voltage through one end of the capacitor and subsequently connects the one end of the capacitor to the anode electrode of the light emitting element. | 08-29-2013 |