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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Tanada; Yoshifumi
Address:
Kanagawa, JP
No. of patents:
76
Patents:


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Patent Number Title Of Patent Date Issued
8294154 Semiconductor display device October 23, 2012
A semiconductor display device using a light-emitting element, which can suppress luminance unevenness among pixels due to the potential drop of a wiring, is provided. Power supply lines to which a power supply potential is supplied are electrically connected to each other in a display r
8284151 Semiconductor device October 9, 2012
There is provided a semiconductor device in which fabrication steps can be reduced by constructing a circuit using only TFTs of one conductivity type and in which a voltage amplitude of an output signal can be normally obtained. A capacitance (205) is provided between a gate and a source
8264445 Pulse output circuit, shift register and display device September 11, 2012
A drive circuit of a display device, which comprise only single conductive TFTs and in which amplitude of an output signal is normal, is provided. A pulse is inputted to TFTs 101 and 104 so that the TFTs would turn ON and then potential of a node a rises. When the potential of the no
8242683 Electronic display including a light-emitting element and a color filter sandwiched between two August 14, 2012
It is an object of the invention to achieve weight saving and downsizing of an electronic apparatus, in particular a portable electronic apparatus while enlarging a display screen thereof. The invention provides an electronic apparatus using a light emitting device which includes a light
8217864 Display device July 10, 2012
A display device in which the current load of wirings are distributed and display variations due to voltage drop are suppressed. An active matrix display device of the invention comprises a first current input terminal, a second current input terminal, and a plurality of current supply l
8207916 Light emitting device and method of driving the light emitting device June 26, 2012
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
8154189 Display device and manufacturing method of the same April 10, 2012
In a display device with a pixel constituted using an EL element or the like, leak light from a monitoring element that is provided for correcting changes in the properties of the element due to the temperature change, deterioration, or the like is effectively suppressed. The display
8139001 Display device March 20, 2012
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
8124922 Photoelectric conversion device including photoelectric conversion element and amplifier circuit February 28, 2012
Objects are to accumulate electric charge in a capacitor so that light intensity can be detected even when the amount of incident light is small, and to operate a photoelectric conversion device without increasing the number of elements such as a constant current source or a switch.
8115160 Protection circuit and photoelectric conversion device February 14, 2012
A protection circuit and a photoelectric conversion device are provided, each of which includes a first wiring, a second wiring, a first switch, a second switch, a capacitor, and a comparing circuit configured to generate a signal corresponding to a potential of the first wiring and a
8059109 Display device and electronic apparatus November 15, 2011
To provide a display device whose display can be recognized even in dark places or under the strong outside light. The display device performs display by controlling the number of gray scales in accordance with the intensity of outside light, which means a display mode can be switched in
8054596 Semiconductor device November 8, 2011
An element is protected without hampering an actual operation in the case where overvoltage that might damage the element is applied. A semiconductor device includes a first potential supply terminal 100; a second potential supply terminal 101; a protection circuit 107 which includes
8044598 Light-emitting device October 25, 2011
The amplitude of a potential of a signal line is decreased and a scan line driver circuit is prevented from being excessively loaded. A light-emitting device includes a light-emitting element; a first power supply line having a first potential; a second power supply line having a sec
8018403 Display device September 13, 2011
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
7987498 Personal data management system and nonvolatile memory card July 26, 2011
It is an object to provide a personal data management system which overcomes a problem of data leakage and a nonvolatile memory card applied to the personal data management system. A personal data management system includes a personal data storage medium including a communication control
7977678 Semiconductor display device July 12, 2011
A semiconductor display device using a light-emitting element, which can suppress luminance unevenness among pixels due to the potential drop of a wiring, is provided. Power supply lines to which a power supply potential is supplied are electrically connected to each other in a display r
7943938 Display device with light-emitting layer May 17, 2011
An object of the present invention is to decrease substantial resistance of an electrode such as a transparent electrode or a wiring, and furthermore, to provide a display device for which is possible to apply same voltage to light-emitting elements. In the invention, a auxiliary wir
7924244 Semiconductor device and method of driving the semiconductor device April 12, 2011
Display irregularities in light emitting devices, which develop due to dispersions per pixel in the threshold value of TFTs for supplying electric current to light emitting elements, are obstacles to increasing the image quality of the light emitting devices. An electric potential in
7915684 Semiconductor device and manufacturing method thereof March 29, 2011
To provide a structure and a manufacturing method for efficiently forming a transistor to which tensile strain is preferably applied and a transistor to which compressive strain is preferably applied over the same substrate when stress is applied to a semiconductor layer in order to
7903079 Semiconductor device March 8, 2011
There is provided a semiconductor device in which fabrication steps can be reduced by constructing a circuit using only TFTs of one conductivity type and in which a voltage amplitude of an output signal can be normally obtained. A capacitance (205) is provided between a gate and a source
7830080 Light-emitting display device with light-blocking layer and manufacturing method thereof November 9, 2010
In a display device with a pixel constituted using an EL element or the like, leak light from a monitoring element that is provided for correcting changes in the properties of the element due to the temperature change, deterioration, or the like is effectively suppressed. The display
7821002 Semiconductor device and manufacturing method thereof October 26, 2010
The semiconductor device has a semiconductor layer, a gate electrode which covers an end portion of the semiconductor layer, and an insulating layer for insulating the semiconductor layer and the gate electrode. The film thickness of the insulating layer which insulates a region where an
7791571 Light emitting device and driving method of the same September 7, 2010
The invention provides a light emitting device which can suppress the reduction of luminance in accordance with the light emission time and light emission at a high luminance. Moreover, the invention relates to a driving method which can suppress the reduction of luminance in accorda
7724247 Display device with ambient light sensing May 25, 2010
The object of the invention is to provide a display device of which the display is visible in a dark place or under strong external light. The present invention is a display device which performs display, changing the grayscale number corresponding to the external light strength, and a
7696973 Driver circuit of a display device April 13, 2010
In a driver circuit of a display device handling a digital image signal, there is provided a driver circuit with a structure in which the timing of holding the image signal in a latch circuit is not influenced by a delay of a sampling pulse. A pre-charge TFT (102) is turned ON in a r
7683860 Display device, driving method thereof, and element substrate March 23, 2010
The invention provides a display device with high image quality and high definition, a driving method thereof and an element substrate. Further, the invention provides a display device with improved degradation of a light emitting element, a driving method thereof and an element subs
7659892 Display device and portable terminal February 9, 2010
In order to increase the continuous operating time of a display device driven by a battery or the like, and a portable information terminal using the same, the volume and weight of the battery are increased. Thus, there arises a trade-off between the increased capacity of the battery
7649529 Light emitting apparatus and method of driving same January 19, 2010
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
7649516 Light emitting device January 19, 2010
A pixel having a structure in which low voltage drive is possible is provided by a simple process. A digital image signal input from a source signal line is input to the pixel through a switching TFT. At this point, a voltage compensation circuit amplifies the voltage amplitude of the
7636078 Display device and electronic device December 22, 2009
It is an object of the present invention to provide a display device in which images can be seen under a dark place to intense external light. In the display device, display is performed by changing the gray scale number depending on external light intensity, and display modes can be
7616173 Electronic device and method of driving the same November 10, 2009
An electro-optical device with a pixel portion of enhanced definition is provided, which uses pixels having a novel structure so that the number of stages of a source signal line side driver circuit is reduced to half the number of pixels in the horizontal direction, thereby making a spa
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
7592984 Display device and electronic device September 22, 2009
A display device capable of displaying on both screens and switching between vertical and horizontal display, and a driving method thereof. Each pixel comprises a first region including a first light emitting element, and a second region including a second light emitting element. The
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
7586478 Semiconductor device September 8, 2009
There is provided a semiconductor device in which fabrication steps can be reduced by constructing a circuit using only TFTs of one conductivity type and in which a voltage amplitude of an output signal can be normally obtained. A capacitance (205) is provided between a gate and a source
7567227 Electronic device and method of driving the same July 28, 2009
To provide a novel driving method for driving an electronic device by using digital gray scale and time gray scale in combination, which secures high duty ratio, which can display an image normally even when a sustain period is shorter than an address period, and which is hardly affe
7557779 Display device July 7, 2009
A display device in which the current load of wirings are distributed and display variations due to voltage drop are suppressed. An active matrix display device of the invention comprises a first current input terminal, a second current input terminal, and a plurality of current supply l
7554359 Circuit for inspecting semiconductor device and inspecting method June 30, 2009
It is configured by plurality of NAND circuits connected in series through a plurality of inverters, and a plurality of NOR circuits connected in series through the plurality of inverters. Each of a plurality of source signal lines provided in a pixel portion is connected to one input
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
7517773 Method of manufacturing a thin film transistor April 14, 2009
A method of manufacturing a semiconductor device characterized by its high-speed operation and high reliability is provided in which a semiconductor layer crystallized by a CW laser is used for an active layer of a TFT. When a semiconductor layer is crystallized by a CW laser, one pa
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
7429985 Semiconductor device and driving method thereof September 30, 2008
Brightness irregularities that develop in a light emitting device due to is persion among pixels in the threshold values of TFTs used for supplying electric current to light emitting devices become obstacles to improved image quality of the light emitting device. As an image signal i
7403177 Display device, driving method thereof, and electronic apparatus July 22, 2008
It is characterized in that the image signal selecting the light-emission/no light-emission of the first to third light-emitting elements 112 to 114 formed by lamination is input through only the transistor for switching 107, and the specific light-emission is selectively emitted by
7333077 Display device and electronic device February 19, 2008
A display device capable of displaying on both screens and switching between vertical and horizontal display, and a driving method thereof. Each pixel comprises a first region including a first light emitting element, and a second region including a second light emitting element. The
7330162 Method of driving a light emitting device and electronic equipment February 12, 2008
A driving method is provided which improves the duty ratio, which presents high image quality by securing a sufficient length of sustain (lighting) period when gray scales are increased in number, and which prolongs the lifetime of a light emitting element. One frame period has m (m is a
7329985 Semiconductor device and manufacturing method thereof February 12, 2008
A self-light emitting display device with top-emission usually has no film that is capable of light shielding. Therefore, it is necessary to form a light-shielding layer additionally with, which leads the number of processes to increase.In the present invention, plural films selected
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
7319055 Method of fabricating a semiconductor device utilizing crystallization of semiconductor region w January 15, 2008
To provide a method of efficiently configuring a circuit requiring high inter-device consistency by using thin-film transistors. A semiconductor layer is formed on a substrate and is patterned into desired shapes to form first semiconductor islands. The first semiconductor islands are
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
7268499 Self light emitting device and method of driving thereof September 11, 2007
A self light emitting device having a function of correcting drops in brightness in self light emitting elements in a pixel portion, and capable of displaying a uniform image without brightness irregularities, is provided. A specific test pattern is displayed when an electric power s
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