Abstract: A display apparatus is provided with a current driving type light-emitting device and a driving device for controlling a driving current flowing through the light-emitting device for each pixel of the display apparatus. The display apparatus consists of power source units for supplying power for causing a driving current to flow via the driving device to the light-emitting device via a power source wire, and signal wire driving units for supplying a data signal to the driving device via signal wires. In addition, voltage adjusting units adjust a voltage for the power source units or a data signal from the signal wire driving units so that a quantity of a driving current flowing through the light emitting device when a data signal of a predetermined voltage is supplied to the driving device via signal wires or a quantity of emitted light emitted from the light-emitting device comes close to a predetermined reference value.

Abstract: An organic EL display device driven by thin-film transistors is disclosed, wherein for suppressing the deterioration with time of thin-film transistors, at least one of the thin-film transistors, or a second thin-film transistor is formed of a p-channel type thin-film transistor. The p-channel type thin-film transistor has been formed in the same step of process as the thin-film transistors in built-in drive circuits.

Abstract: 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, directly connecting 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. A plurality of OELDs have a round shape. A plurality of OELDs are arranged 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.

Abstract: To overcome a poor visibility of an organic electroluminescence display device in a bright place and increase in power consumption caused by an attempt to increase the luminance for visibility improvement.

Abstract: A display apparatus (100) is provided with a current driving type light-emitting device (224) and a driving device (223) for controlling a driving current flowing through the light-emitting device for each pixel. The display apparatus comprises power source units (13, 14) for supplying power source for causing a driving current to flow via the driving device to the light-emitting device via a power source wire and signal wire driving units (11, 12) for supplying a data signal to the driving device via signal wires (131, 132). In addition, voltage adjusting units (16-23) adjust a voltage from a power source from the power source units or a data signal from the signal wire driving unit so that a quantity of current of a driving current flowing through the light-emitting device in such a manner that, when a data signal of a predetermined voltage is supplied to the driving device via signal wires or a quantity of emitted light emitted from the light-emitting device comes close to a predetermined reference value.

Abstract: An active-matrix type organic EL display which uses transistors with less variation of characteristics (transistors in which active layer is a single crystal semiconductor) is made on a large area of a transparent base board at low cost. Plural unit of fine construction are formed on a silicon wafer in rows. This unit includes a driving element (switching transistor 34, driving transistor 37, capacity 36) of organic EL element (pixel) 35. Unit block 39 is produced by dividing this silicon wafer. This unit block 39 is disposed at a predetermined position of glass base board 52 (display base board). The driving element of each pixel 35 is connected by signal line 31, power supply line 32, scanning line 33, and capacity line 38.

Abstract: 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, directly connecting 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. A plurality of OELDs have a round shape. A plurality of OELDs are arranged 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.

Abstract: An organic EL display device driven by thin-film transistors is disclosed, wherein for suppressing the deterioration with time of thin-film transistors, at least one of the thin-film transistors, or a second thin-film transistor is formed of a p-channel type thin-film transistor. The p-channel type thin-film transistor has been formed in the same step of process as the thin-film transistors in built-in drive circuits.

Abstract: The width of a gate electrode is smaller than that of the semiconductor film. A sub gate electrode connected to the gate electrode is disposed, at the gate electrode side of the semiconductor film, away from the semiconductor film more than gate electrode. The width of the sub gate electrodes is larger than that of the semiconductor film. Ends of the semiconductor film have regions formed of an intrinsic semiconductor which is not doped with dopant. In a semiconductor device, this structure is suitable to reduce degradation over time which is due to increase of the electric field strength or the carrier concentration at the ends of the semiconductor film.

Abstract: An electro-optical device including pixels disposed in a matrix at intersections of a plurality of signal lines and a plurality of scanning lines, each of said pixels including sub-pixels each provided with a static random access memory and an electro-optical element.

Abstract: A display apparatus having a structure in which planar multicolor light sources (201, 202, 203, and 204), such as ELs, are used as multicolor light sources, and a planar optical modulation panel (210) is combined therewith. In contrast with a construction in which a multicolor cold-cathode tube and a light valve are driven by time division, the outer shape of the display apparatus can be reduced, power consumption is reduced, and excellent color display can be performed.

Abstract: 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, directly connecting 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. A plurality of OELDs have a round shape. A plurality of OELDs are arranged 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.

Abstract: An organic light-emitting device having an organic light-emitting region comprising a plurality of organic light-emitting pixels; switch means each associated with a respective pixel for switching power to that pixel; and drive means for driving each switch means to cycle between a first, low power mode and a second, high power mode, at a frequency sufficient to cause light emission from the associated pixel to appeal substantially continuous, the duration of the highpower mode relative to the low power mode being variable so as to vary the average brightness of the pixel.

Abstract: A display apparatus, that includes current driving type luminescent elements, has a driving system that takes the conduction types of TFTs to control the emission of the luminescent elements into consideration. In order to reduce driving voltage and improve display quality simultaneously, the arrangement is provided such that if the second TFT which performs the “on-off” function of the current for the luminescent element is of an N channel type, the potential of the common power supply line (“com”) is lowered below the potential of the opposite electrode (“op”) of the luminescent element to obtain a higher gate voltage (“Vgcur”).

Abstract: An object of the invention is to improve patterning accuracy while maintaining low cost, high throughput and a high degree of freedom of an optical material in a matrix type display device and a manufacturing method thereof.

Abstract: 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.

Abstract: 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, directly connecting 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. A plurality of OELDs have a round shape. A plurality of OELDs are arranged 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.

Abstract: To provide a method for implementing a multi-level display of an electro-optical device according to a time ratio gray-scale method without providing resetlines.

Abstract: [Object] To provide a method for implementing a gray-scale display of an electro-optical device according to a time ratio gray-scale method without providing reset lines.

Abstract: A transistor circuit is provided including a driving transistor where conductance between the source and the drain is controlled in response to a supplied voltage, and a compensating transistor where the gate is connected to one of the source and the drain, the compensating transistor being 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.