| Patent Number |
Title Of Patent |
Date Issued |
| 7623100 |
Display device |
November 24, 2009 |
| The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to |
| 7623099 |
Display device |
November 24, 2009 |
| The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to |
| 7623098 |
Display device |
November 24, 2009 |
| The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to |
| 7622943 |
Electrical inspection method and method of fabricating semiconductor display devices |
November 24, 2009 |
| A method of electrically inspecting semiconductor display devices, which is capable of inspecting whether a signal is normally input to the pixels and whether an electric charge is normally held by the holding capacitors without using the video signal line as a passage for reading the el |
| 7595778 |
Display device and electronic device using the same |
September 29, 2009 |
| A display device with a compensation circuit that applies a fixed potential constantly to a gate electrode of a driving transistor for a certain period is provided. Specifically, each difference voltage value between an anode and a cathode of the light emitting element is utilized in |
| 7595775 |
Light emitting display device with reverse biasing circuit |
September 29, 2009 |
| A circuitry and a driving method thereof in which a reverse voltage is applied to a light emitting element to control the degradation thereof and improve reliability for a display device comprising a pixel circuit.A first power source line is connected to a signal line through a switchin |
| 7592991 |
Light emitting device and drive method thereof |
September 22, 2009 |
| The reliability of an EL element is enhanced while the increase of the electric power consumption is suppressed. It becomes possible that in a SES drive, the reverse bias is applied to the EL element driven at a constant electric current. Moreover, the application of the reverse bias |
| 7592980 |
Semiconductor device |
September 22, 2009 |
| Semiconductor elements deteriorate or are destroyed due to electrostatic discharge damage. The present invention provides a semiconductor device in which a protecting means is formed in each pixel. The protecting means is provided with one or a plurality of elements selected from the gro |
| 7592975 |
Display device and driving method thereof |
September 22, 2009 |
| A display device where a reverse driving voltage can be applied to a light-emitting element at regular intervals in order to insulate a short-circuit portion, thereby prolonging the life of the light-emitting element. A short-circuit portion is burnt out by providing a period for sup |
| 7589698 |
Display device, semiconductor device, and electronic device |
September 15, 2009 |
| When an electrical characteristic of the TFT varies, display unevenness such as brightness unevenness or gradation unevenness is occurred in a display image. According to the present invention, a display device in which variation of an electrical characteristic of a TFT is reduced, and |
| 7579220 |
Semiconductor device manufacturing method |
August 25, 2009 |
| It is an object of the present invention to form a plurality of elements in a limited area to reduce the area occupied by the elements for integration so that further higher resolution (increase in number of pixels), reduction of each display pixel pitch with miniaturization, and int |
| 7554854 |
Method for deleting data from NAND type nonvolatile memory |
June 30, 2009 |
| To provide a method of releasing charges which have been injected into charge accumulating layers of nonvolatile memory elements without using a substrate terminal such as a p well or an n well, as a method for deleting data from a NAND-type nonvolatile memory. In the method for dele |
| 7554116 |
Display device |
June 30, 2009 |
| A display device according to the present invention includes: a planarization layer for insulating between a gate electrode etc. and a data wiring, a drain electrode, or the like of the transistor; and a barrier layer that is formed on an upper surface or lower surface of the planari |
| 7542018 |
Light emitting device and drive method thereof |
June 2, 2009 |
| The reliability of an EL element is enhanced while the increase of the electric power consumption is suppressed. It becomes possible that in a SES drive, the reverse bias is applied to the EL element driven at a constant electric current. Moreover, the application of the reverse bias |
| 7525521 |
Display device, semiconductor device, and electronic device |
April 28, 2009 |
| When an electrical characteristic of the TFT varies, display unevenness such as brightness unevenness or gradation unevenness is occurred in a display image. According to the present invention, a display device in which variation of an electrical characteristic of a TFT is reduced, and |
| 7482629 |
Display device and electronic device |
January 27, 2009 |
| A display device where the influence of variations in current of the light emitting element due to changes in ambient temperature and changes with time can be suppressed. The display device of the invention has a light emitting element, a driving transistor connected in series to the lig |
| 7460095 |
Display device and manufacturing method thereof |
December 2, 2008 |
| A display device capable of applying reverse driving voltage for a light emitting element to a light emitting element every certain period for prolonging light emitting element's life and burning out a shorted portion. Besides a path for supplying forward current to the light emittin |
| 7456056 |
Semiconductor device and method for fabricating the same |
November 25, 2008 |
| A novel and very useful method for forming a crystal silicon film by introducing a metal element which promotes crystallization of silicon to an amorphous silicon film and for eliminating or reducing the metal element existing within the crystal silicon film thus obtained is provided |
| 7450093 |
Light emitting device and method of driving the light emitting device |
November 11, 2008 |
| A light emitting device that achieves long life, and which is capable of performing high duty drive, by suppressing initial light emitting element deterioration is provided. Reverse bias application to an EL element (109) is performed one row at a time by forming a reverse bias electric |
| 7445946 |
Method of driving a light emitting device |
November 4, 2008 |
| The present invention is characterized in that a transistor with its L/W set to 10 or larger is employed, and that |V.sub.DS| of the transistor is set equal to or larger than 1 V and equal to or less than |V.sub.GS-V.sub.th|. The transistor is used as a resistor so that the resistanc |
| 7423295 |
Light emitting device and element substrate |
September 9, 2008 |
| The invention provides a light emitting device using transistors manufactured by the conventional process while reducing an area occupied by capacitors, whereby variations in luminance of light emitting elements caused by variations in gate voltage Vgs of the transistors are suppress |
| 7388562 |
Display device and driving method of the same |
June 17, 2008 |
| A display device in which the influence of a parasitic capacitance or a wiring capacitance is suppressed without lowering OFF-current of a switching transistor or increasing the capacitance of a capacitor, and a driving method thereof using area gray scale display in particular. The |
| 7385573 |
Display device and driving method thereof |
June 10, 2008 |
| It is provided a display device that prevents, when applying a reverse bias, an anode line and a power supply line included in a signal line driver circuit from being short-circuited, and a driving method thereof. According to the invention, a reverse bias applying circuit is provided |
| 7385413 |
Electrical inspection method and method of fabricating semiconductor display devices |
June 10, 2008 |
| A method of electrically inspecting semiconductor display devices, which is capable of inspecting whether a signal is normally input to the pixels and whether an electric charge is normally held by the holding capacitors without using the video signal line as a passage for reading the el |
| 7375376 |
Semiconductor display device and method of manufacturing the same |
May 20, 2008 |
| A semiconductor display device with an interlayer insulating film in which surface levelness is ensured with a limited film formation time, heat treatment for removing moisture does not take long, and moisture in the interlayer insulating film is prevented from escaping into a film or |
| 7358942 |
Element substrate and light emitting device |
April 15, 2008 |
| A light emitting device and an element substrate which are capable of suppressing variations in luminance intensity of a light emitting element among pixels due to characteristic variations of a driving transistor without suppressing off-current of a switching transistor low and incr |
| 7358163 |
Semiconductor device and method for fabricating the same |
April 15, 2008 |
| A novel and very useful method for forming a crystal silicon film by introducing a metal element which promotes crystallization of silicon to an amorphous silicon film and for eliminating or reducing the metal element existing within the crystal silicon film thus obtained is provided |
| 7355338 |
Electronic device provided with multiple display panels including at least one dual electrolumin |
April 8, 2008 |
| A dual light emission panel (panel capable of displaying images on both screens) is mounted in a display device or a portable information terminal to achieve a module with a small volume. The display device of the invention comprises a display screen, a first housing and a second hou |
| 7352133 |
Light emitting device |
April 1, 2008 |
| An object of the present invention is to provide a light emitting device that is able to suppress power consumption while a balance of white light is kept, without making a configuration of a power source circuit complicated. A power source potential corresponding to each color of a |
| 7324123 |
Display device and electronic apparatus |
January 29, 2008 |
| Outside light is received using a light sensor, and in accordance with the outside light intensity, each of a first display mode which expresses multiple gray scales and a second display-y mode which expresses a gray scale smaller in number than that in the first display mode is switched |
| 7323924 |
Level shifter circuit |
January 29, 2008 |
| A low-power consumption level shifter circuit is provided by preventing a through current which is generated when a level of a signal is changed. In order to prevent a through current which flows when a level of a signal of the input is changed, the p-channel TFTs are controlled so that |
| 7307607 |
Passive matrix light emitting device |
December 11, 2007 |
| To provide a passive self-luminous device having a function for correcting a degradation of a light emitting element, which is capable of performing display with uniformity across a screen without occurrence of brightness variance. A counter counts an accumulated illumination time or an |
| 7301382 |
Data latch circuit and electronic device |
November 27, 2007 |
| The data latch circuit of the invention includes a means for short-circuiting an input terminal and an output terminal of an inverter and by connecting the input terminal to one electrode of a capacitor and sampling a data signal or a reference potential to the other electrode of the |
| 7288789 |
Semiconductor device having thin film transistor and light-shielding film |
October 30, 2007 |
| A semiconductor device in which TFTs of suitable structures are arranged depending upon the performances of the circuits, and storage capacitors are formed occupying small areas, the semiconductor device featuring high performance and bright image. The thickness of the gate-insulating fi |
| 7276856 |
Light emitting device and drive method thereof |
October 2, 2007 |
| The reliability of an EL element is enhanced while the increase of the electric power consumption is suppressed. It becomes possible that in a SES drive, the reverse bias is applied to the EL element driven at a constant electric current. Moreover, the application of the reverse bias |
| 7262556 |
Light-emitting device |
August 28, 2007 |
| A light-emitting device which realizes a high aperture ratio and in which the quality of image is little affected by the variation in the characteristics of TFTs. A large holding capacitor Cs is not provided in the pixel portion but, instead, the channel length and the channel width |
| 7250931 |
Light emitting apparatus and method of driving same |
July 31, 2007 |
| In a light emitting apparatus, all pixels are fabricated using monochrome light-emitting materials. Since the light transmittances of color filters or color conversion layers are not uniform among red (R), green (G), and blue (B), exact white color cannot be displayed. In the present |
| 7250720 |
Display device |
July 31, 2007 |
| A display device with high-definition, in which display unevenness due to a voltage drop in a wiring or display unevenness due to a variation in characteristics of TFTs are suppressed. The display device of the invention comprises a first wiring for transmitting a video signal and a |
| 7224333 |
Display device and driving method thereof |
May 29, 2007 |
| In an active matrix EL display device, a drive mode is switched between constant voltage drive and constant current drive according to display contents. Whether an OLED is driven at constant current or driven at constant voltage is determined according to whether a driving TFT is dri |
| 7221338 |
Display device |
May 22, 2007 |
| The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to |
| 7221092 |
Display device having a double sided display panel |
May 22, 2007 |
| The invention provides a portable information terminal, such as a notebook PC, including light-emitting elements entirely having longer lives (a double-sided display panel having longer lives) and allowing lower power consumption with a double-sided display panel having a first screen on |
| 7218298 |
Light emitting device |
May 15, 2007 |
| This invention provides a light emitting device in which each pixel has three sub-pixels for emitting different colors, comprising a signal correction circuit for correcting gradation information of each signal depending on the light emitting index of each sub-pixels, characterized i |
| 7180245 |
Light emitting device and element substrate |
February 20, 2007 |
| The invention provides a light emitting device using transistors manufactured by the conventional process while reducing an area occupied by capacitors, whereby variations in luminance of light emitting elements caused by variations in gate voltage Vgs of the transistors are suppress |
| 7176857 |
Light emitting device and method of driving the light emitting device |
February 13, 2007 |
| A light emitting device that achieves long life, and which is capable of performing high duty drive, by suppressing initial light emitting element deterioration is provided. Reverse bias application to an EL element (109) is performed one row at a time by forming a reverse bias electric |
| 7173586 |
Element substrate and a light emitting device |
February 6, 2007 |
| A light emitting device and an element substrate which are capable of suppressing variations in the luminance intensity of a light emitting element among pixels due to characteristic variations of a driving transistor without suppressing off-current of a switching transistor low and |
| 7170478 |
Method of driving light-emitting device |
January 30, 2007 |
| Degradations in light emitting elements occur with the passage of time. The invention provides a method of driving a light-emitting device provided with a plurality of pixels, which includes a light-emitting means with a first and a second electrodes, a drive means for supplying the |
| 7154466 |
Semiconductor display device and method of driving the same |
December 26, 2006 |
| In executing the opposing common inverse drive in an active matrix-type semiconductor display device, a gate bias is suppressed to be comparable with that of the conventional inverse drive to avoid a range in which the off current jumps up and, hence, to suppress the leakage of the store |
| 7148510 |
Electronic apparatus having a protective circuit |
December 12, 2006 |
| A semiconductor display device with an interlayer insulating film in which surface levelness is ensured with a limited film formation time, heat treatment for removing moisture does not take long, and moisture in the interlayer insulating film is prevented from escaping into a film or |
| 7142030 |
Data latch circuit and electronic device |
November 28, 2006 |
| The data latch circuit of the invention includes a means for short-circuiting an input terminal and an output terminal of an inverter and by connecting the input terminal to one electrode of a capacitor and sampling a data signal or a reference potential to the other electrode of the |
| 7141934 |
Element substrate and light emitting device |
November 28, 2006 |
| A light emitting device and an element substrate which are capable of suppressing variations in the luminance intensity of a light emitting element among pixels due to characteristic variations of a driving transistor without suppressing off-current of a switching transistor low and |
