Patent application number | Description | Published |
20080297055 | Cathode potential controller, self light emission display device, electronic apparatus, and cathode potential controlling method - A cathode potential controller for controlling a common cathode potential applied to a self light emission type display panel in which an emission state of each of pixels is driven and controlled in accordance with an active matrix drive system, the cathode potential controller including: a self light emitting element; a constant current source; an electrode-to-electrode voltage measuring portion; a cathode potential determining portion; and a cathode potential applying portion. | 12-04-2008 |
20090295691 | Image display device - The present invention disposes a switch transistor between a driving transistor and a light emitting element, and sets the switch transistor in an off state during a non-emission period. Thereby, a variation in threshold voltage of the driving transistor is corrected while destruction of the light emitting element due to a reverse bias is avoided. | 12-03-2009 |
20100007583 | Image display device - Disclosed herein is an image display device including a display section formed by arranging pixel circuits in a matrix form. Each pixel circuit includes at least a light emitting element, a drive transistor, a holding capacitor, and a write transistor. A light emission and non-light emission periods are alternately repeated. A light emission period start voltage and a non-light emission period start voltage are alternately output to the signal line. The terminal voltage of the holding capacitor is set to start the light emission and non-light emission periods. The write signal is set to sequentially delay the timings. The power drive signal is set in units of a plurality of successive lines. The drain voltage of the drive transistor is pulled up to high level at a time other than when the one of the terminals is connected to the signal line by the write signal in different lines. | 01-14-2010 |
20100033510 | Image pickup apparatus and method of driving the same - A display apparatus includes: a display area formed by disposing pixel circuits in a matrix; a signal line drive circuit for generating drive signals for signal lines in accordance with image data, and outputting the drive signals for the signal lines to signal lines of the display area, respectively; and a scanning line drive circuit for outputting write signals to scanning lines for write of the display area, respectively; wherein when there is no change in the image data, the scanning line drive circuit stops the write signals from being outputted. | 02-11-2010 |
20100045648 | Image display device and driving method of image display device - Disclosed herein is an image display device including a display section, a signal line driving circuit, and a scanning line driving circuit. The display section is formed by arranging pixel circuits in a form of a matrix. The signal line driving circuit is configured to output a driving signal for a signal line to the signal line of the display section. The scanning line driving circuit is configured to output a driving signal for a scanning line to the scanning line of the display section. The pixel circuits each include at least a light emitting element, a driving transistor configured to drive the light emitting element connected to a source by a driving current corresponding to a gate-to-source voltage, a storage capacitor configured to retain the gate-to-source voltage, and a writing transistor configured to set a terminal voltage of the storage capacitor by a voltage of the signal line. | 02-25-2010 |
20100053131 | Image display apparatus - The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line. | 03-04-2010 |
20100053226 | Image display apparatus and method for driving the same - The present invention sets power supply drive signals DS[ | 03-04-2010 |
20110096065 | Display apparatus and method for driving the same - A method of driving a display apparatus formed by arranging display devices each having a driving circuit and a current-driven type light emitting portion, the method comprising the steps of: performing a threshold voltage cancelling process in units of a display device row in which a predetermined reference voltage is applied to a gate electrode of a driving transistor of Q×N display devices configuring groups of display device rows and a predetermined driving voltage is applied to one source/drain region of the Q×N display devices so as to change the electric potential of the other source/drain region toward an electric potential calculated by subtracting a threshold voltage of the driving transistor from the reference voltage during a period T | 04-28-2011 |
20110157158 | Display panel module, semiconductor integrated circuit, drive method of pixel array unit and electronic apparatus - A display panel module includes: a pixel array unit in which sub-pixels each having a current-driven self luminous device and a pixel circuit controlling the drive of the self luminous device are arranged in a matrix state; a signal line drive unit driving signal lines; a writing control line drive unit controlling writing of potentials appearing at the signal lines to the sub-pixels based on a scanning clock of a given frequency; and a power supply control unit controlling supply and stop of drive power supply with respect to the sub-pixels, which supplies drive power supply prescribing a lighting period of the self luminous devices in the unit of given plural horizontal lines at the same timing in the order of completion of signal potential writing based on the scanning clock after waiting time of a given length passes after completion of the signal potential writing of a first horizontal line in which the signal potential writing is completed first as well as controls the length of the lighting period in one frame to be the same in all horizontal lines. | 06-30-2011 |
20110205252 | Display device, driving method of display device, and driving method of display element - Disclosed herein is a driving method of a display device. The display device includes display elements arranged in a form of a two-dimensional matrix and each have a driving circuit and a light emitting section. The driving circuit includes a driving transistor having a gate electrode and source/drain regions and a capacitance section, and a current flowing through the light emitting section via the source/drain regions of the driving transistor. The driving method includes the step of performing a first writing process, a second writing process, and then setting the gate electrode of the driving transistor in a floating state. A current corresponding to a value of a voltage retained in the capacitance section for retaining a voltage of the gate electrode of the driving transistor with respect to a source region of the driving transistor flows through the light emitting section, so that the light emitting section emits light. | 08-25-2011 |
20120320029 | IMAGE DISPLAY DEVICE - An image display device and method of driving an image display device with alternative repeating of an emission period during which the light emitting element is made to emit light and a non-emission period during which light emission of the light emitting element is stopped. The terminal voltage of a storage capacitor is set to the voltage of a signal line, whereby light emission luminance of the light emitting element in a next emission period is set. | 12-20-2012 |
20130278573 | IMAGE DISPLAY APPARATUS - The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line. | 10-24-2013 |
20140055431 | IMAGE DISPLAY APPARATUS - The present invention provides an active matrix image display apparatus including an organic EL element capable of efficiently arranging a wiring pattern on an insulating substrate compared to the related art. The present invention provides a dummy region arranged at the outermost periphery of a display unit as a scanning line coupling region or a pitch conversion region. A power supply scanning line is commonly used by a pixel circuit of an odd-numbered line and a pixel circuit of a following even-numbered line. | 02-27-2014 |