公开(公告)号：US20120261665A1

公开(公告)日：2012-10-18

申请号：US13531822

申请日：2012-06-25

申请人： Mitsuaki Osame ,  Aya Anzai ,  Yoshifumi Tanada ,  Keisuke Miyagawa ,  Satoshi Seo ,  Shunpei Yamazaki

发明人： Mitsuaki Osame ,  Aya Anzai ,  Yoshifumi Tanada ,  Keisuke Miyagawa ,  Satoshi Seo ,  Shunpei Yamazaki

IPC分类号： H01L27/15

CPC分类号： G09G3/32 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2310/027 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/043 ,  G09G2320/045 ,  H01L33/0041

摘要： 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 power source line (112) and a reverse bias TFT (108). Reverse bias application can therefore be performed in synchronous with operations for write-in of an image signal, light emission, erasure, and the like. Reverse bias application therefore becomes possible while maintaining a duty equivalent to that of a conventional driving method.

摘要翻译： 提供了通过抑制初始发光元件劣化而实现长寿命并能够进行高占空比驱动的发光器件。 通过形成反向偏置电源线（112）和反向偏压TFT（108），一次对一个EL元件（109）施加反向偏置。 因此，可以与图像信号的写入，发光，擦除等的操作同步地执行反向偏置应用。 因此，在保持与常规驱动方法相同的占空比的情况下，可以实现反向偏置应用。

公开(公告)号：US20110278579A1

公开(公告)日：2011-11-17

申请号：US13193127

申请日：2011-07-28

申请人： Keisuke Miyagawa ,  Jun Koyama

发明人： Keisuke Miyagawa ,  Jun Koyama

IPC分类号： H01L33/16

CPC分类号： H01L27/124 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2330/021 ,  G09G2330/028

摘要： A conventional setting voltage was a value with an estimated margin of a characteristic change of a light emitting element. Therefore, a voltage between the source and drain of a driver transistor Vds had to be set high (Vds≧Vgs−VTh+a). This caused high heat generation and power consumption because a voltage applied to the light emitting element. The invention is characterized by feedbacking a change in a current value in accordance with the deterioration of a light emitting element and a power source voltage controller which modifies a setting voltage. Namely, according to the invention, the setting voltage is to be set in the vicinity of the boundary (critical part) between a saturation region and a linear region, and a voltage margin for the deterioration is not required particularly for an initial setting voltage.

摘要翻译： 传统的设定电压是具有发光元件的特性变化的估计裕量的值。 因此，必须将驱动晶体管Vds的源极和漏极之间的电压设置为高（Vds≥Vgs-VTh + a）。 这导致由于施加到发光元件的电压而导致高的发热和功率消耗。 本发明的特征在于根据改变设定电压的发光元件和电源电压控制器的劣化反馈电流值的变化。 也就是说，根据本发明，将设定电压设定在饱和区域和线性区域之间的边界（临界部分）附近，并且对初始设定电压不需要劣化的电压余量。

公开(公告)号：US20110186852A1

公开(公告)日：2011-08-04

申请号：US13087561

申请日：2011-04-15

申请人： Hajime KIMURA ,  Keisuke MIYAGAWA

发明人： Hajime KIMURA ,  Keisuke MIYAGAWA

IPC分类号： H01L29/786

CPC分类号： G09G3/2011 ,  G09G3/2081 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/3275 ,  G09G2300/0417 ,  G09G2300/0426 ,  G09G2300/0814 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0233 ,  G09G2320/043

摘要： In the respect of an electrical characteristic of a transistor, a channel size W/L of a transistor is preferably designed small in order to decrease an effect of a variation in threshold voltage, while the channel size W/L is preferably designed large in order to widen a saturation region as an operation region of the transistor in the respect of characteristic of a light emitting element. Thus, decreasing an effect of a variation in threshold voltage and widening a saturation region in order not to reduce luminance due to a degradation of the light emitting element are in the relation of trade-off. According to the invention, a current capacity of a driving transistor is increased so as to operate in a wide saturation region. A lighting period control circuit is provided in each pixel for changing a lighting period of each pixel separately. Another configuration of the invention includes a plurality of transistors, for example a first driving transistor and a second driving transistor, and a lighting period control circuit for controlling a lighting period of the light emitting element in each pixel.

摘要翻译： 在晶体管的电特性方面，晶体管的沟道尺寸W / L优选设计得较小，以便降低阈值电压的变化的影响，而沟道尺寸W / L优选按照大的顺序设计 根据发光元件的特性，将饱和区域加宽为晶体管的工作区域。 因此，为了不降低由于发光元件的劣化引起的亮度，降低阈值电压变化的影响和加宽饱和区域是折衷关系。 根据本发明，驱动晶体管的电流容量增加，以便在宽饱和区域中工作。 在每个像素中提供照明周期控制电路，用于分别改变每个像素的发光周期。 本发明的另一种结构包括多个晶体管，例如第一驱动晶体管和第二驱动晶体管，以及用于控制每个像素中的发光元件的点亮周期的发光周期控制电路。

公开(公告)号：US07928945B2

公开(公告)日：2011-04-19

申请号：US10844491

申请日：2004-05-13

申请人： Hajime Kimura ,  Keisuke Miyagawa

发明人： Hajime Kimura ,  Keisuke Miyagawa

IPC分类号： G09G3/36

CPC分类号： G09G3/2011 ,  G09G3/2081 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/3275 ,  G09G2300/0417 ,  G09G2300/0426 ,  G09G2300/0814 ,  G09G2300/0842 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2320/0233 ,  G09G2320/043

摘要： In the respect of an electrical characteristic of a transistor, a channel size W/L of a transistor is preferably designed small in order to decrease an effect of a variation in threshold voltage, while the channel size W/L is preferably designed large in order to widen a saturation region as an operation region of the transistor in the respect of characteristic of a light emitting element. Thus, decreasing an effect of a variation in threshold voltage and widening a saturation region in order not to reduce luminance due to a degradation of the light emitting element are in the relation of trade-off. According to the invention, a current capacity of a driving transistor is increased so as to operate in a wide saturation region. A lighting period control circuit is provided in each pixel for changing a lighting period of each pixel separately. Another configuration of the invention includes a plurality of transistors, for example a first driving transistor and a second driving transistor, and a lighting period control circuit for controlling a lighting period of the light emitting element in each pixel.

摘要翻译： 在晶体管的电特性方面，晶体管的沟道尺寸W / L优选设计得较小，以便降低阈值电压的变化的影响，而沟道尺寸W / L优选按照大的顺序设计 根据发光元件的特性，将饱和区域加宽为晶体管的工作区域。 因此，为了不降低由于发光元件的劣化引起的亮度，降低阈值电压变化的影响和加宽饱和区域是折衷关系。 根据本发明，驱动晶体管的电流容量增加，以便在宽饱和区域中工作。 在每个像素中提供照明周期控制电路，用于分别改变每个像素的发光周期。 本发明的另一种结构包括多个晶体管，例如第一驱动晶体管和第二驱动晶体管，以及用于控制每个像素中的发光元件的点亮周期的发光周期控制电路。

公开(公告)号：US07652658B2

公开(公告)日：2010-01-26

申请号：US10807543

申请日：2004-03-24

申请人： Kazuo Nishi ,  Yu Yamazaki ,  Tomoyuki Iwabuchi ,  Keisuke Miyagawa

发明人： Kazuo Nishi ,  Yu Yamazaki ,  Tomoyuki Iwabuchi ,  Keisuke Miyagawa

IPC分类号： G09G5/00

CPC分类号： G01J1/0209 ,  G01J1/0233 ,  G01J1/0247 ,  G01J1/0271 ,  G01J1/4204 ,  G01J1/4228 ,  G02F1/13318 ,  G02F2001/133342 ,  G09G2360/04 ,  H04M1/0214 ,  H04M1/0245 ,  H04M2250/12

摘要： A photodetector of the invention is characterized by having a plurality of detector elements that are arranged over a light-transparent substrate and are connected in parallel. A foldable portable communication tool having two display portions of the invention is characterized by including one photodetector which includes a plurality of detector elements connected in parallel.

摘要翻译： 本发明的光电检测器的特征在于具有多个检测器元件，其布置在透光基板上并且并联连接。 具有本发明的两个显示部分的可折叠便携式通信工具的特征在于包括一个光电检测器，其包括并联连接的多个检测器元件。

公开(公告)号：US07622943B2

公开(公告)日：2009-11-24

申请号：US12134845

申请日：2008-06-06

申请人： Keisuke Miyagawa ,  Mitsuaki Osame

发明人： Keisuke Miyagawa ,  Mitsuaki Osame

IPC分类号： G01R31/00

CPC分类号： G09G3/006 ,  G09G3/3688 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2310/0275

摘要： 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 electric charge and without separately providing an inspection-dedicated circuit. Power source lines which are used as passages for supplying the power source voltage are used as passages for reading the electric charge. Namely, the power source lines that can be connected to the signal lines are used as passages for inputting an inspection signal to the holding capacitors in the pixels and for reading the electric charge from the holding capacitors in the pixels.

摘要翻译： 一种检查半导体显示装置的方法，其能够检查信号是否正常地输入到像素，以及电荷是否正常地被保持电容器保持，而不使用视频信号线作为读取电荷的通道， 而不单独提供检查专用电路。 用作供电电源电压的通路的电源线用作读取电荷的通道。 也就是说，可以连接到信号线的电源线用作用于将检查信号输入到像素中的保持电容器并用于从像素中的保持电容器读取电荷的通道。

公开(公告)号：US07609310B2

公开(公告)日：2009-10-27

申请号：US10866108

申请日：2004-06-14

申请人： Keisuke Miyagawa

发明人： Keisuke Miyagawa

IPC分类号： H04N5/335

CPC分类号： H04N7/144 ,  H04N2007/145

摘要： A two-way communication device having a display device of novel structure and an image pickup device is provided. More particularly, a two-way communication system having a display device and an image pickup device is provided. The display device having an image pickup function includes an image pickup unit and a display panel in which light emitting elements which can transmit visible light at least and be controlled by voltage or current are arranged. A compact and lightweight device can be achieved without using a complicated optical system or an optical system having a long light path, whereby two parties can communicate while catching each other's eyes.

摘要翻译： 提供具有新颖结构的显示装置和图像拾取装置的双向通信装置。 更具体地，提供了具有显示装置和图像拾取装置的双向通信系统。 具有图像拾取功能的显示装置包括图像拾取单元和显示面板，其中布置至少可以透过可见光并通过电压或电流控制的发光元件。 可以在不使用具有长光路的复杂的光学系统或光学系统的情况下实现紧凑且轻便的装置，由此双方可以在捕捉彼此的眼睛的同时进行通信。

公开(公告)号：US20090174333A1

公开(公告)日：2009-07-09

申请号：US12348574

申请日：2009-01-05

申请人： Masahiko Hayakawa ,  Yu Yamazaki ,  Yukari Ando ,  Keisuke Miyagawa ,  Jun Koyama ,  Mitsuaki Osame ,  Aya Anzai ,  Shunpei Yamazaki ,  Satoshi Seo ,  Hiroko Abe

发明人： Masahiko Hayakawa ,  Yu Yamazaki ,  Yukari Ando ,  Keisuke Miyagawa ,  Jun Koyama ,  Mitsuaki Osame ,  Aya Anzai ,  Shunpei Yamazaki ,  Satoshi Seo ,  Hiroko Abe

IPC分类号： H05B37/02

CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G2300/08 ,  G09G2300/0842 ,  G09G2310/0256 ,  G09G2310/0275 ,  G09G2310/061 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2330/02 ,  G09G2330/12 ,  H01L27/3244 ,  H01L2251/5323

摘要： 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 light emitting element, a monitoring light emitting element, a limiter transistor connected in series to the monitoring light emitting element, a constant current source for supplying a constant current to the monitoring light emitting element, and a circuit for outputting a potential equal to an inputted potential. A first electrode of the light emitting element is connected to an output terminal of the circuit through the driving transistor, and a first electrode of the monitoring light emitting element is connected to an input terminal of the circuit through the limiter transistor. The channel length L1 and the channel width W1 of the driving transistor, and the channel length L2 and the channel width W2 of the limiter transistor satisfy L1/W1:L2/W2=1:2 to 1:10.

摘要翻译： 可以抑制由于环境温度的变化而随着时间的变化而影响发光元件的电流的变化的显示装置。 本发明的显示装置具有发光元件，与发光元件串联连接的驱动晶体管，监视发光元件，与监视发光元件串联连接的限幅晶体管，用于供给 到监视发光元件的恒定电流，以及用于输出等于输入电位的电位的电路。 发光元件的第一电极通过驱动晶体管连接到电路的输出端，并且监控发光元件的第一电极通过限幅晶体管连接到电路的输入端。 驱动晶体管的沟道长度L1和沟道宽度W1以及限制晶体管的沟道长度L2和沟道宽度W2满足L1 / W1：L2 / W2 = 1:2至1:10。

公开(公告)号：US07542018B2

公开(公告)日：2009-06-02

申请号：US11861494

申请日：2007-09-26

申请人： Aya Anzai ,  Mitsuaki Osame ,  Yoshifumi Tanada ,  Keisuke Miyagawa ,  Satoshi Seo ,  Shunpei Yamazaki

发明人： Aya Anzai ,  Mitsuaki Osame ,  Yoshifumi Tanada ,  Keisuke Miyagawa ,  Satoshi Seo ,  Shunpei Yamazaki

IPC分类号： G09G3/30

CPC分类号： G09G3/3266 ,  G09G3/2022 ,  G09G3/3258 ,  G09G3/3291 ,  G09G3/3655 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2300/0847 ,  G09G2300/0866 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2310/0262 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2320/043 ,  G09G2330/021 ,  H01L27/3244

摘要： 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 is performed by varying only the counter electrode, and thus withstand voltage of TFT and the increase of the electric power consumption due to the increase of voltage of the gate signal line drive circuit, which becomes a problem when changing greatly the electric current supplying line, can be suppressed. Furthermore, the reduction of the electric power consumption can also be achieved while the enhancement of the reliability is secured by making the reverse bias smaller than the forward bias. Moreover, the increase of the number of electric sources can be also suppressed by making the potential be in common with the potential of the electric source of the source signal line drive circuit or the gate signal line drive circuit, at the time when the reverse bias is applied.

公开(公告)号：US07508126B2

公开(公告)日：2009-03-24

申请号：US11007281

申请日：2004-12-09

申请人： Keisuke Miyagawa

发明人： Keisuke Miyagawa

IPC分类号： H01J1/62 ,  H01J63/04

CPC分类号： H01L27/3218 ,  H01L27/3246

摘要： Element forming regions of the same color are disposed diagonally and a pixel portion has a structure that a region for forming an element are shared by a plurality of pixels. A specific pixel structure of the invention is that element forming regions of a first color, a second color, and a third color are each disposed diagonally and three or more element forming regions are shared by each pixel.

摘要翻译： 相同颜色的元件形成区域对角设置，并且像素部分具有用于形成元件的区域被多个像素共享的结构。 本发明的具体像素结构是，第一颜色，第二颜色和第三颜色的元素形成区域各自对角地设置，并且每个像素共享三个或更多个元素形成区域。