摘要:
The present invention aims to provide a method for driving an electro-optical device, an electro-optical device and electronic equipment that can solve the insufficient supply of the data current and current fluctuation. A data current (Imax) is applied to a plurality of pixels (20) provided to a display panel unit with same value through the data line (Xm) regardless of grayscale data. Upon supply of the data current (Imax), in the pixel (20), a transistor selected in reproduction Trep is turned on such that a drive current (Idr) corresponding to the data current (Imax) output from a driving transistor (Tdr) is supplied to an organic EL element (21), thereby emitting light. A light-off signal (Vsig) is supplied to the pixel (20) at predetermined timing such that the organic EL element (21) emits light only in the light-emitting period computed based on the grayscale data. The pixel (20) to which a constant data current is supplied emits light at a luminance corresponding to the grayscale data by changing the light-emitting period corresponding to the grayscale data.
摘要:
A display apparatus comprising, arranged on a substrate, a plurality of scanning lines, a plurality of data lines intersecting said scanning lines, a plurality of common power supply lines, a plurality of pixels formed by said scanning lines and said data lines in matrix form, each of said pixels comprising a first thin film transistor having a first gate electrode which is supplied with a scanning signal through said scanning line, a holding capacitor which holds an image signal supplied through said data lines via said first thin film transistor, a second thin film transistor having a second gate electrode which is supplied with said image signal held by said holding capacitor, and a luminescent element having an emitting thin film which is provided between a pixel electrode formed each by each of said pixels and an opposite electrode opposed to said pixel electrode and emits light due to the driving current which flows between said pixel electrode and said opposite electrode when said pixel electrode is electrically connected to said common power supply line through said second thin film transistor, wherein one of the electrodes of said holding capacitor, opposite to that electrically connected to said second gate electrode of said second thin film transistor, is supplied with a pulse, a potential polarity of which is opposite to the selecting pulse of said scanning signal with a delay behind said selecting pulse.
摘要:
A transistor circuit (100) including a driving transistor (110) where conductance between a source and a drain is controlled in response to voltage, and a compensating transistor (120) where a gate is connected to one of a source and a drain and wherein the compensating transistor is connected so as to supply input signals to the gate of the driving transistor through the source and drain. In a transistor circuit where conductance control in a driving transistor is carried out in response to the voltage of input signals, it is possible to control the conductance by using input signals of a relatively low voltage and a variance in threshold characteristics of driving transistors is compensated. With this transistor circuit, a display panel that can display picture images with reduced uneven brightness is achieved.
摘要:
A display apparatus comprising a substrate a plurality of emitting films above the substrate, each of the plurality of emitting films being disposed between a pixel electrode disposed above the substrate and an opposite electrode disposed above the pixel electrode; and a bank disposed above the substrate, the bank being disposed on a side of an emitting film of the plurality of emitting films, a light from each of the plurality of emitting films emitting toward a direction opposite to the substrate with respect to the plurality of emitting films through the opposite electrodes.
摘要:
The invention seeks to reduce the resistance of the feed line in the display device (electro-optical device), and to reduce the loss in the current supply to the light-emitting element etc. In an electro-optical device including an electro-optical element and a driver circuit for driving the electro-optical element, a wiring board used for the electro-optical device includes a feed line film (32) for supplying the driver circuit with current for putting the electro-optical element into operation; a signal line film (20) for supplying the driver circuit with a level signal for determining intensity of the current to be supplied to the electro-optical element; and an operation line film (30) for supplying the driver circuit with an operation instruction signal for instructing whether to put the electro-optical element into operation or not, and the feed line film (32) constitutes an upper layer among the feed line film (32), the signal line film (20), and the operation line film (30).
摘要:
The invention provides a method and apparatus to obtain accurate gradation by obtaining an accurate ratio of light emitting parts in a display device which implements gradation by forming a plurality of TFTs and a plurality of OELDs in each pixel, interconnecting the TFTs and OELDs, and switching an on and off state of the TFTs, and controlling a light emitting area of the OELDs. A plurality of OELDs have the same shape, and gradation can be implemented by controlling the number of OELDs that emit light at a given time. Preferably a plurality of OELDs have a round shape. Also preferably plurality of OELDs are ranged at the same interval in a vertical and/or horizontal direction. According to this structure, because the light emitting areas of the plurality of OELDs become equal to each other, by controlling the number of OELDs, a ratio of the light emitting areas can be accurately obtained.