公开(公告)号：US08421715B2

公开(公告)日：2013-04-16

申请号：US11131462

申请日：2005-05-18

申请人： Masahiko Hayakawa ,  Yu Yamazaki ,  Yukari Ando ,  Keisuke Miyagawa ,  Jun Koyama ,  Tomoyuki Iwabuchi ,  Mitsuaki Osame ,  Aya Anzai ,  Shunpei Yamazaki

发明人： Masahiko Hayakawa ,  Yu Yamazaki ,  Yukari Ando ,  Keisuke Miyagawa ,  Jun Koyama ,  Tomoyuki Iwabuchi ,  Mitsuaki Osame ,  Aya Anzai ,  Shunpei Yamazaki

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/2022 ,  G09G3/3216 ,  G09G3/3241 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0465 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/063 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2330/04

摘要： A light emitting element has a property that a resistance value (internal resistance value) thereof changes according to the ambient temperature. Specifically, assuming that the room temperature is a normal temperature, when the ambient temperature becomes higher than the normal temperature, a resistance value is decreased, and when the ambient temperature becomes lower than the normal temperature, a resistance value is increased. Therefore, when the ambient temperature changes or degradation is caused with time due to the aforementioned property of the light emitting element, luminance varies. The invention provides a display device where an effect of current fluctuation of a light emitting element, which is caused by the change in ambient temperature and degradation with time, is suppressed. The display device comprises a monitoring element, to which a current is supplied from a current source. A voltage applied to the monitoring element is applied to a light emitting element.

摘要翻译： 发光元件具有其电阻值（内部电阻值）根据环境温度而变化的性质。 具体地，假设室温为常温，当环境温度变得高于常温时，电阻值降低，并且当环境温度变得低于常温时，电阻值增加。 因此，由于上述发光元件的特性，当环境温度随时间变化或劣化时，亮度变化。 本发明提供了一种显示装置，其中抑制了由环境温度的变化和随着时间的劣化而引起的发光元件的电流波动的影响。 显示装置包括监视元件，从电流源提供电流。 施加到监视元件的电压被施加到发光元件。

公开(公告)号：US20060022206A1

公开(公告)日：2006-02-02

申请号：US11131462

申请日：2005-05-18

申请人： Masahiko Hayakawa ,  Yu Yamazaki ,  Yukari Ando ,  Keisuke Miyagawa ,  Jun Koyama ,  Tomoyuki Iwabuchi ,  Mitsuaki Osame ,  Aya Anzai ,  Shunpei Yamazaki

发明人： Masahiko Hayakawa ,  Yu Yamazaki ,  Yukari Ando ,  Keisuke Miyagawa ,  Jun Koyama ,  Tomoyuki Iwabuchi ,  Mitsuaki Osame ,  Aya Anzai ,  Shunpei Yamazaki

IPC分类号： H01L31/12

CPC分类号： G09G3/3233 ,  G09G3/2022 ,  G09G3/3216 ,  G09G3/3241 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0465 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/063 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/045 ,  G09G2320/048 ,  G09G2330/04

摘要： A light emitting element has a property that a resistance value (internal resistance value) thereof changes according to the ambient temperature. Specifically, assuming that the room temperature is a normal temperature, when the ambient temperature becomes higher than the normal temperature, a resistance value is decreased, and when the ambient temperature becomes lower than the normal temperature, a resistance value is increased. Therefore, when the ambient temperature changes or degradation is caused with time due to the aforementioned property of the light emitting element, luminance varies. The invention provides a display device where an effect of current fluctuation of a light emitting element, which is caused by the change in ambient temperature and degradation with time, is suppressed. The display device comprises a monitoring element, to which a current is supplied from a current source. A voltage applied to the monitoring element is applied to a light emitting element.

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：US07482629B2

公开(公告)日：2009-01-27

申请号：US11123209

申请日：2005-05-06

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： H01L29/04

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：US07834355B2

公开(公告)日：2010-11-16

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： H01L29/04

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：US20060038804A1

公开(公告)日：2006-02-23

申请号：US11123209

申请日：2005-05-06

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： G09G5/00

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L 1和沟道宽度W 1以及限制晶体管的沟道长度L 2和沟道宽度W 2满足L 1 / W 1：L 2 / W 2 = 1：2〜1 ：10。

公开(公告)号：US08013809B2

公开(公告)日：2011-09-06

申请号：US11151702

申请日：2005-06-14

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

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

IPC分类号： G09G3/30

CPC分类号： G09G3/3216 ,  G09G3/2018 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043

摘要： The brightness of a light emitting element varies when changes in ambient temperature or changes with time occur. In view of this, the invention provides a display device where the influence of variations in the current value of the light emitting element due to changes in ambient temperature and changes with time can be suppressed. The display device of the invention includes a monitoring element that is driven with a constant current, and a voltage applied to the monitoring element is detected and inputted to a light emitting element. In other words, the monitoring element is driven with a low current, and a voltage applied to the monitoring element is inputted to the light emitting element such that the light emitting element is driven with a constant current.

摘要翻译： 随着环境温度的变化或时间的变化，发光元件的亮度发生变化。 鉴于此，本发明提供了一种显示装置，其中可以抑制由于环境温度的变化和随时间的变化而导致的发光元件的电流值的变化的影响。 本发明的显示装置包括以恒定电流驱动的监视元件，并且检测施加到监视元件的电压并将其输入到发光元件。 换句话说，监视元件以低电流驱动，并且施加到监视元件的电压被输入到发光元件，使得发光元件以恒定电流驱动。

公开(公告)号：US20060139254A1

公开(公告)日：2006-06-29

申请号：US11151702

申请日：2005-06-14

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

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

IPC分类号： G09G3/30

CPC分类号： G09G3/3216 ,  G09G3/2018 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043

摘要： The brightness of a light emitting element varies when changes in ambient temperature or changes with time occur. In view of this, the invention provides a display device where the influence of variations in the current value of the light emitting element due to changes in ambient temperature and changes with time can be suppressed. The display device of the invention includes a monitoring element that is driven with a constant current, and a voltage applied to the monitoring element is detected and inputted to a light emitting element. In other words, the monitoring element is driven with a low current, and a voltage applied to the monitoring element is inputted to the light emitting element such that the light emitting element is driven with a constant current.

摘要翻译： 随着环境温度的变化或时间的变化，发光元件的亮度发生变化。 鉴于此，本发明提供了一种显示装置，其中可以抑制由于环境温度的变化和随时间的变化而导致的发光元件的电流值的变化的影响。 本发明的显示装置包括以恒定电流驱动的监视元件，并且检测施加到监视元件的电压并将其输入到发光元件。 换句话说，监视元件以低电流驱动，并且施加到监视元件的电压被输入到发光元件，使得发光元件以恒定电流驱动。

公开(公告)号：US08274456B2

公开(公告)日：2012-09-25

申请号：US13190598

申请日：2011-07-26

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

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

IPC分类号： G09G3/36

CPC分类号： G09G3/3216 ,  G09G3/2018 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043

摘要： The brightness of a light emitting element varies when changes in ambient temperature or changes with time occur. In view of this, the invention provides a display device where the influence of variations in the current value of the light emitting element due to changes in ambient temperature and changes with time can be suppressed. The display device of the invention includes a monitoring element that is driven with a constant current, and a voltage applied to the monitoring element is detected and inputted to a light emitting element. In other words, the monitoring element is driven with a low current, and a voltage applied to the monitoring element is inputted to the light emitting element such that the light emitting element is driven with a constant current.

摘要翻译： 随着环境温度的变化或时间的变化，发光元件的亮度发生变化。 鉴于此，本发明提供了一种显示装置，其中可以抑制由于环境温度的变化和随时间的变化而导致的发光元件的电流值的变化的影响。 本发明的显示装置包括以恒定电流驱动的监视元件，并且检测施加到监视元件的电压并将其输入到发光元件。 换句话说，监视元件以低电流驱动，并且施加到监视元件的电压被输入到发光元件，使得发光元件以恒定电流驱动。

公开(公告)号：US20110279441A1

公开(公告)日：2011-11-17

申请号：US13190598

申请日：2011-07-26

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

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

IPC分类号： G09G5/00 ,  G09G3/30

CPC分类号： G09G3/3216 ,  G09G3/2018 ,  G09G3/3283 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2320/0233 ,  G09G2320/029 ,  G09G2320/041 ,  G09G2320/043

摘要： The brightness of a light emitting element varies when changes in ambient temperature or changes with time occur. In view of this, the invention provides a display device where the influence of variations in the current value of the light emitting element due to changes in ambient temperature and changes with time can be suppressed. The display device of the invention includes a monitoring element that is driven with a constant current, and a voltage applied to the monitoring element is detected and inputted to a light emitting element. In other words, the monitoring element is driven with a low current, and a voltage applied to the monitoring element is inputted to the light emitting element such that the light emitting element is driven with a constant current.

摘要翻译： 随着环境温度的变化或时间的变化，发光元件的亮度发生变化。 鉴于此，本发明提供了一种显示装置，其中可以抑制由于环境温度的变化和随时间的变化而导致的发光元件的电流值的变化的影响。 本发明的显示装置包括以恒定电流驱动的监视元件，并且检测施加到监视元件的电压并将其输入到发光元件。 换句话说，监视元件以低电流驱动，并且施加到监视元件的电压被输入到发光元件，使得发光元件以恒定电流驱动。