公开(公告)号：US20070040568A1

公开(公告)日：2007-02-22

申请号：US11589082

申请日：2006-10-30

申请人： Keisuke Miyagawa

发明人： Keisuke Miyagawa

IPC分类号： G01R31/26

CPC分类号： G09G3/006 ,  G09G3/20 ,  G09G2300/0809 ,  G09G2300/0814 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2330/02

摘要： For an inspection of a display device which incorporates a driver circuit around pixels, a start pulse and a clock pulse are required to be inputted as inspection signals. The more complex the driver circuit is, the more complexity the start pulse and the clock pulse tend to have, which will increase the manufacturing cost of inspection signals. In addition, since a clock generator is required, cost of an inspection device is increased. Furthermore, it will lead to a longer inspection time. By setting all the power supplies for the driver circuit at a desired potential, a desired potential is outputted regardless of an input signal.

摘要翻译： 对于在像素周围包含驱动电路的显示装置的检查，需要输入起始脉冲和时钟脉冲作为检查信号。 驱动电路越复杂，启动脉冲和时钟脉冲越复杂，这将增加检测信号的制造成本。 此外，由于需要时钟发生器，检查装置的成本增加。 此外，这将导致更长的检查时间。 通过将驱动器电路的所有电源设置在期望的电位，无论输入信号如何，输出期望的电位。

公开(公告)号：US07180515B2

公开(公告)日：2007-02-20

申请号：US10697003

申请日：2003-10-31

申请人： Keisuke Miyagawa ,  Jun Koyama

发明人： Keisuke Miyagawa ,  Jun Koyama

IPC分类号： G09G5/00

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，驱动晶体管V ds的源极和漏极之间的电压必须被设置为高（V SUB）= V S + a）。 由于施加到发光元件的电压，所以导致高发热量和功率消耗。 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来反馈电流值的变化。 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，并且不需要用于劣化的电压余量，特别是对于初始设定电压 。

公开(公告)号：US20060066555A1

公开(公告)日：2006-03-30

申请号：US11229465

申请日：2005-09-16

申请人： Keisuke Miyagawa

发明人： Keisuke Miyagawa

IPC分类号： G09G3/36

CPC分类号： G09G3/2007 ,  G09G3/30 ,  G09G2300/0809 ,  G09G2310/0224 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/0289 ,  G09G2320/0242

摘要： When adopting a time division gray scale, a pseudo contour occurs. The invention provides a new driver circuit and driving method of an active display device, which can reduce the occurrence of a pseudo contour by using an interlace method. The invention provides an active display device adopting an interlace method, where pixels of odd-numbered rows and odd-numbered columns and pixels of even-numbered rows and even-numbered columns are displayed during an odd-numbered frame period, and pixels of odd-numbered rows and even-numbered columns and pixels of even-numbered rows and odd-numbered columns are displayed during an even-numbered frame period. As a result, the occurrence of a pseudo contour can be reduced without increasing the frame frequency.

摘要翻译： 当采用时分灰度时，会发生伪轮廓。 本发明提供了一种有源显示装置的新的驱动电路和驱动方法，其可以通过使用交错方法来减少伪轮廓的出现。 本发明提供一种采用隔行扫描方法的有源显示装置，其中奇数行和奇数列的像素以及偶数行和偶数列的像素在奇数帧周期期间被显示，并且奇数像素 - 偶数行和偶数列以及偶数行和奇数列的像素在偶数帧周期期间被显示。 结果，可以在不增加帧频的情况下减少伪轮廓的出现。

公开(公告)号：US20050242746A1

公开(公告)日：2005-11-03

申请号：US11113133

申请日：2005-04-25

申请人： Keisuke Miyagawa ,  Hajime Kimura

发明人： Keisuke Miyagawa ,  Hajime Kimura

IPC分类号： G09G3/10 ,  G09G3/20 ,  G09G3/32

CPC分类号： G09G3/2092 ,  G09G3/2029 ,  G09G3/3233 ,  G09G2300/0465 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/0673 ,  G09G2330/02 ,  H01L27/1222 ,  H01L27/124 ,  H01L27/1255

摘要： The inventors found out that in the case of performing a low gray scale display in which a very small amount of current is supplied to a light emitting element, variations in threshold voltages of driving transistors become notable since the gate-source voltage is low. In view of this, the invention provides a display device in which variations in the threshold voltages of the driving transistors are reduced even in the low gray scale display, and a driving method thereof. According to the invention, a gate-source voltage of the driving transistor is set higher in the low gray scale display than that in the high gray scale display. As one mode to achieve this, different power source lines are provided for the low gray scale display and the high gray scale display and their potentials are set to be different.

摘要翻译： 本发明人发现，在执行向发光元件供应非常少量的电流的低灰度显示的情况下，由于栅极 - 源极电压低，所以驱动晶体管的阈值电压的变化变得显着。 鉴于此，本发明提供一种即使在低灰度级显示器中驱动晶体管的阈值电压的变化也减小的显示装置及其驱动方法。 根据本发明，驱动晶体管的栅极 - 源极电压在低灰度显示器中比在高灰度级显示器中高。 作为实现这一点的一种模式，为低灰度显示和高灰度显示提供不同的电源线，并且它们的电位被设置为不同。

公开(公告)号：US20050151462A1

公开(公告)日：2005-07-14

申请号：US11007281

申请日：2004-12-09

申请人： Keisuke Miyagawa

发明人： Keisuke Miyagawa

IPC分类号： H05B33/14 ,  H01L27/32 ,  H01L51/50 ,  H05B33/10 ,  H01J1/62 ,  H01J63/04

CPC分类号： H01L27/3218 ,  H01L27/3246

摘要： In this manner, even when a patterning precision for forming a semiconductor element and a wiring finer is improved, high definition of a display device having a light emitting element is not expected since the intervals between the apertures of the metal mask cannot be narrow. In view of the aforementioned problem, according to the invention, 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： 以这种方式，即使提高了用于形成半导体元件和布线精细度的图案化精度，由于金属掩模的孔之间的间隔不能窄，所以不期望具有发光元件的显示装置的高清晰度。 鉴于上述问题，根据本发明，相同颜色的元件形成区域对角地设置，并且像素部分具有用于形成元件的区域由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。

公开(公告)号：US20050030265A1

公开(公告)日：2005-02-10

申请号：US10902811

申请日：2004-08-02

申请人： Keisuke Miyagawa

发明人： Keisuke Miyagawa

IPC分类号： G09F9/30 ,  G09G3/20 ,  G09G3/30

CPC分类号： G09G3/32 ,  G09G3/2022 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2300/0866 ,  G09G2310/0256 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043 ,  H01L27/3262 ,  H01L27/3265 ,  H01L27/3276 ,  H01L29/78669 ,  H01L29/78678 ,  H01L2924/0002 ,  H01L2924/00

摘要： A driving method of a light emitting device, in which when an N-type driving TFT is connected to an anode of a light emitting element or a P-type driving TFT is connected to a cathode thereof, the driving TFT operates in a saturation region and an image can be displayed with a desired gray scale level depending on a video signal. In addition, a light emitting device adopting the driving method is provided. According to the invention, when a potential having image data is supplied to a gate of a driving TFT depending on a video signal, a reverse bias voltage is applied to the driving TFT and a light emitting element which are connected in series with each other. Meanwhile, when a pixel displays an image depending on the video signal, a forward bias voltage is applied to the driving TFT and the light emitting element.

摘要翻译： 当将N型驱动TFT连接到发光元件的阳极或P型驱动TFT的发光器件的驱动方法连接到其阴极时，驱动TFT工作在饱和区域 并且可以根据视频信号以期望的灰度级别显示图像。 此外，提供了采用驱动方法的发光装置。 根据本发明，当根据视频信号将具有图像数据的电位提供给驱动TFT的栅极时，将反向偏置电压施加到彼此串联连接的驱动TFT和发光元件。 同时，当像素显示取决于视频信号的图像时，正向偏置电压被施加到驱动TFT和发光元件。