Patent application number | Description | Published |
20080303798 | Display Device with Touch Panel - Suggested is a display device with a touch panel which adopts a novel detection structure. The display device with the touch panel includes: a touch panel including a pair of substrates provided with electrodes on opposing surfaces thereof, and a spacer for retaining a gap between the pair of substrates; and a display panel located on a back surface of the touch panel, in which one of the pair of substrates is provided with a metal wiring formed on a resin. | 12-11-2008 |
20090109149 | Image display device - An image display device having a plurality of pixel, a plurality of signal lines for inputting an image voltage to each of the plurality of pixels, and a pixel selecting unit for selecting from the plurality of pixels a pixel into which the image voltage is to be written, in which each of the pixels has a light emitting device of a current driving-type, a driving transistor connected between a power line and the light emitting device, and a capacitance device having one end connected to a gate electrode of the driving transistor, the image voltage is input to the other end of the capacitance device during the writing period, an inclined wave voltage which changes a voltage level thereof according to time is input to the other end of the capacitance device during a light emission period following the writing period. | 04-30-2009 |
20090303164 | Display Device - The invention provides an image display device capable of reducing the transmission delay of a scanning signal. A plurality of scanning signal lines are wired in one pixel circuit row. Pixel circuits of the pixel circuit row are connected to any of the plurality of scanning signal lines. | 12-10-2009 |
20100039454 | DISPLAY DEVICE - In an image display device, each pixel includes a drive transistor for driving a light emitting element, a capacitive element which is connected between a signal line and a control electrode of the drive transistor, and a reset switching element. The reset switching elements of all pixels are turned off within a light emission period, and a PWM signal is supplied to a signal line from a drive circuit. A cycle of the PWM signal in a low brightness display mode is shorter than a cycle of the PWM signal in a standard brightness display mode. Due to such a constitution, the constitution of a drive circuit can be simplified, and it is possible to control light emission brightnesses of respective pixels of red, green and blue over a wide range from high brightness to low brightness while taking a balance among the light emission brightnesses. | 02-18-2010 |
20100053042 | Display Device - A plurality of data signal lines each of which is connected to at least one pixel circuit in one pixel circuit column and is not connected to the pixel circuits of other pixel circuit columns are provided to one pixel circuit column, and the pixel circuits in the pixel circuit column are connected to any one of the plurality of data signal lines. An image display device having such a constitution can alleviate lowering of display quality attributed to transmission delay or voltage drop of a scanning signal. | 03-04-2010 |
20100177086 | IMAGE DISPLAY DEVICE - An image display device for displaying an image by causing a light emitting element contained in each of a plurality of pixels that are arranged in a display area (SA) to emit light includes: power supply paths for supplying electric power to each of a plurality of partial areas, which are created by dividing the display area (SA), independently of other partial areas to make the light emitting element of each pixel that belongs to the partial area emit light; and a power control unit for controlling electric power to be supplied from each of the power supply paths to the associated partial area, and at least some of the partial areas have an area that overlaps with other adjacent partial areas. | 07-15-2010 |
20100328366 | DISPLAY DEVICE AND DISPLAY METHOD - A display device is provided which displays images by emitting light when a reference voltage is applied to pixels. An average picture level calculation unit of a reference voltage calculation unit in a rectangular wave driving unit of a TFT substrate calculates the value of average picture level, and a ΔV calculation unit of a reference voltage calculation unit calculates a correction amount ΔV of the reference voltage based on the average picture level value. The calculated correction amount ΔV is added to a reference voltage and is used as the voltage of a rectangular wave signal that is output to each pixel from a rectangular wave driving unit. In each pixel in which a data signal corresponding to the grayscale value is stored, an organic EL device emits light in accordance with the rectangular wave signal. | 12-30-2010 |
20110012817 | IMAGE DISPLAY DEVICE - An image display device includes: a first power supply line; a second power supply line; a plurality of pixel circuit; a driving circuit for supplying a data signal and a scanning signal; and a switch unit. Each pixel circuit includes: a driving transistor between the first power supply line and the second power supply line; a light emitting element controlled by the driving transistor; and a storage capacitor for storing the data signal and controlling the driving transistor. The driving circuit causes the storage capacitor to store the data signal and controls an intensity of light emission based on the data signal. The switch unit is provided at one of one end of the first power supply line and one end of the second power supply line to control whether or not to allow a current to flow from the first power supply line to the second power supply line. | 01-20-2011 |
20110018787 | DISPLAY DEVICE - Provided is a display device including: a display region in which a plurality of pixels each including a light emitting element are arranged; a power supply unit provided outside the display region; a plurality of power supply lines connected to the power supply unit, for supplying power to the elements; and a light emission control unit ( | 01-27-2011 |
20110043544 | IMAGE DISPLAY DEVICE - Provided is an image display device, in which light emission period control signals are applied to a plurality of pixels holding voltages based on grayscale values, to emit from light emitting elements. During a horizontal synchronizing period, an active period of each of the light emission period control signals is divided into two periods. A start of one of the divisional periods coincides with a start of the horizontal synchronizing signal. An end of the other divisional period coincides with an end of the horizontal synchronizing signal. The active periods of the light emission period control signals (G) and (B) are equal to or larger than 80% of the active period of the light emission period control signal (R). An active period of a light emission control signal is synchronized with the light emission period control signal (R). | 02-24-2011 |
20110221791 | IMAGE DISPLAY DEVICE - An image display device includes pixel circuits, a power supply line, and a data line for supplying a data signal to the pixel circuits. The pixel circuits each include a light emitting element, a drive transistor for controlling light emission of the light emitting element, a storage capacitor provided between the data line and a gate electrode of the drive transistor, a both-end connection switch for connecting both ends of the storage capacitor to each other, and a current interruption switch for interrupting a path of a current flowing from the power supply line through the both-end connection switch. Before the data signal is supplied to each of the pixel circuits, the both-end connection switch connects the both ends of the storage capacitor to each other, and the current interruption switch is disconnected. | 09-15-2011 |
20120105499 | LIGHT-EMITTING ELEMENT DISPLAY DEVICE - A light-emitting element display device includes: a gray level value luminance calculation unit that calculates the luminance to a gray level value from the setting values stored in a setting value storage unit; a voltage luminance storage unit that stores the measurement result of the luminance of a light-emitting element with respect to an applied voltage, a gray level value voltage information calculation unit that calculates the relationship between the gray level value and the voltage; and a DA converter unit that outputs a voltage corresponding to each gray level value. The DA converter unit includes a first ladder resistor unit and a second ladder resistor unit each including variable resistors, a third ladder resistor unit including a number of output terminals corresponding to the number of gray levels, and a gray level value voltage information register that stores the gray level value voltage information. | 05-03-2012 |
20120105501 | IMAGE DISPLAY DEVICE AND METHOD FOR DRIVING IMAGE DISPLAY DEVICE - An image display device includes: a light-emitting element that emits light corresponding to an amount of current in an emission period; a storage capacitor to which a display potential is supplied to one end thereof before the emission period and which stores a voltage corresponding to the display potential; a driving transistor that adjusts an amount of current flowing in a drain electrode thereof in accordance with the voltage stored by the storage capacitor; a lighting control switch which is connected in series with the light-emitting element from the drain electrode of the driving transistor and which is turned on in the emission period; and a discharge switch that connects a node in a current path from the driving transistor to the light-emitting element, through which a current flows when the lighting control switch is turned on, to a wiring that supplies a discharge potential before the emission period. | 05-03-2012 |