公开(公告)号：US20070109284A1

公开(公告)日：2007-05-17

申请号：US11462829

申请日：2006-08-07

申请人： Shunpei Yamazaki ,  Hajime Kimura ,  Atsushi Umezaki ,  Yasunori Yoshida ,  Hideaki Shishido ,  Takuya Kimishima ,  Yasuyuki Arai

发明人： Shunpei Yamazaki ,  Hajime Kimura ,  Atsushi Umezaki ,  Yasunori Yoshida ,  Hideaki Shishido ,  Takuya Kimishima ,  Yasuyuki Arai

IPC分类号： G09G5/00

CPC分类号： G09G3/3233 ,  G09G3/006 ,  G09G3/20 ,  G09G3/2022 ,  G09G3/3225 ,  G09G2300/0809 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0272 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2320/0295 ,  G09G2320/046 ,  G09G2320/048 ,  G09G2330/022 ,  G09G2340/145

摘要： In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region. Further alternatively, a pixel lagging behind in deterioration is deteriorated so that the accumulated lighting time of pixels is equal to each other.

摘要翻译： 在诸如有机EL元件的显示元件中，由于发光而劣化进行，并且即使对显示元件施加相同的电压，发光亮度也降低。 因此，随着时间的推移导致每个像素的亮度变化，从而发生所谓的“图像老化”现象。 鉴于这个因素，本发明提供一种能够减少每个像素中的显示元件的劣化差异并抑制像素中的显示元件的发光变化的显示装置。 防止只有特定像素具有长的累积点亮时间。 为此，改变显示图案的灰度级以防止显示元件在像素中的劣化的差异增加。 或者，防止特定显示图案被固定地显示在特定区域中。 此外，劣化后退的像素劣化，使得像素的累积点亮时间相等。

公开(公告)号：US09147363B2

公开(公告)日：2015-09-29

申请号：US13443146

申请日：2012-04-10

申请人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

发明人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

IPC分类号： G09G3/36 ,  G09G3/32 ,  G09G3/34 ,  G02F1/1335 ,  G02F1/1362

摘要： It is an object to provide a display device in which a problem of light leakage from a liquid crystal element in black display is reduced or overcome and the contrast is improved. It is another object to provide a pixel circuit having a function to control a lighting state of a backlight based on each pixel. These objects are achieved by turning off a light-emitting element in display of a black gray scale, and by providing a light-emitting element in each pixel and providing, in a pixel circuit, a function to individually control lighting and non-lighting of the light-emitting element depending on a gray scale to perform display. When a backlight is provided in each pixel, a light-emitting element that is a backlight is turned off when a black gray scale is displayed, whereby reduction in contrast due to light leakage from a liquid crystal element can be prevented.

公开(公告)号：US08159449B2

公开(公告)日：2012-04-17

申请号：US11730634

申请日：2007-04-03

申请人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

发明人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

IPC分类号： G09G3/36

CPC分类号： G09G3/36 ,  G02F1/133603 ,  G02F1/1362 ,  G09G3/3208 ,  G09G3/3426 ,  G09G3/3648 ,  G09G2300/046 ,  G09G2320/0238 ,  G09G2320/062 ,  G09G2320/066 ,  G09G2330/021

摘要： It is an object to provide a display device in which a problem of light leakage from a liquid crystal element in black display is reduced or overcome and the contrast is improved. It is another object to provide a pixel circuit having a function to control a lighting state of a backlight based on each pixel. These objects are achieved by turning off a light-emitting element in display of a black gray scale, and by providing a light-emitting element in each pixel and providing, in a pixel circuit, a function to individually control lighting and non-lighting of the light-emitting element depending on a gray scale to perform display. When a backlight is provided in each pixel, a light-emitting element that is a backlight is turned off when a black gray scale is displayed, whereby reduction in contrast due to light leakage from a liquid crystal element can be prevented.

摘要翻译： 本发明的目的是提供一种显示装置，其中减少或克服了黑色显示器中的液晶元件的漏光问题，并提高了对比度。 另一个目的是提供一种具有基于每个像素来控制背光的点亮状态的功能的像素电路。 这些目的是通过关闭黑色灰度显示器中的发光元件来实现的，并且通过在每个像素中提供发光元件并在像素电路中提供单独控制照明和非点亮的功能 该发光元件根据灰度来执行显示。 当在每个像素中设置背光时，当显示黑色灰度时，作为背光的发光元件被关闭，由此可以防止由于来自液晶元件的光泄漏造成的对比度的降低。

公开(公告)号：US09189997B2

公开(公告)日：2015-11-17

申请号：US13443146

申请日：2012-04-10

申请人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

发明人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

IPC分类号： G09G3/36 ,  G09G3/32 ,  G09G3/34 ,  G02F1/1335 ,  G02F1/1362

CPC分类号： G09G3/36 ,  G02F1/133603 ,  G02F1/1362 ,  G09G3/3208 ,  G09G3/3426 ,  G09G3/3648 ,  G09G2300/046 ,  G09G2320/0238 ,  G09G2320/062 ,  G09G2320/066 ,  G09G2330/021

摘要： It is an object to provide a display device in which a problem of light leakage from a liquid crystal element in black display is reduced or overcome and the contrast is improved. It is another object to provide a pixel circuit having a function to control a lighting state of a backlight based on each pixel. These objects are achieved by turning off a light-emitting element in display of a black gray scale, and by providing a light-emitting element in each pixel and providing, in a pixel circuit, a function to individually control lighting and non-lighting of the light-emitting element depending on a gray scale to perform display. When a backlight is provided in each pixel, a light-emitting element that is a backlight is turned off when a black gray scale is displayed, whereby reduction in contrast due to light leakage from a liquid crystal element can be prevented.

摘要翻译： 本发明的目的是提供一种显示装置，其中减少或克服了黑色显示器中的液晶元件的漏光问题，并提高了对比度。 另一个目的是提供一种具有基于每个像素来控制背光的点亮状态的功能的像素电路。 这些目的是通过关闭黑色灰度显示器中的发光元件来实现的，并且通过在每个像素中提供发光元件并在像素电路中提供单独控制照明和非点亮的功能 该发光元件根据灰度来执行显示。 当在每个像素中设置背光时，当显示黑色灰度时，作为背光的发光元件被关闭，由此可以防止由于来自液晶元件的光泄漏造成的对比度的降低。

公开(公告)号：US20070242031A1

公开(公告)日：2007-10-18

申请号：US11730634

申请日：2007-04-03

申请人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

发明人： Hajime Kimura ,  Yasunori Yoshida ,  Hideaki Shishido ,  Atsushi Umezaki ,  Makoto Yanagisawa ,  Shunpei Yamazaki

IPC分类号： G09G3/36

CPC分类号： G09G3/36 ,  G02F1/133603 ,  G02F1/1362 ,  G09G3/3208 ,  G09G3/3426 ,  G09G3/3648 ,  G09G2300/046 ,  G09G2320/0238 ,  G09G2320/062 ,  G09G2320/066 ,  G09G2330/021

摘要： It is an object to provide a display device in which a problem of light leakage from a liquid crystal element in black display is reduced or overcome and the contrast is improved. It is another object to provide a pixel circuit having a function to control a lighting state of a backlight based on each pixel. These objects are achieved by turning off a light-emitting element in display of a black gray scale, and by providing a light-emitting element in each pixel and providing, in a pixel circuit, a function to individually control lighting and non-lighting of the light-emitting element depending on a gray scale to perform display. When a backlight is provided in each pixel, a light-emitting element that is a backlight is turned off when a black gray scale is displayed, whereby reduction in contrast due to light leakage from a liquid crystal element can be prevented.

摘要翻译： 本发明的目的是提供一种显示装置，其中减少或克服了黑色显示器中的液晶元件的漏光问题，并提高了对比度。 另一个目的是提供一种具有基于每个像素来控制背光的点亮状态的功能的像素电路。 这些目的是通过关闭黑色灰度显示器中的发光元件来实现的，并且通过在每个像素中提供发光元件并在像素电路中提供单独控制照明和非点亮的功能 该发光元件根据灰度来执行显示。 当在每个像素中设置背光时，当显示黑色灰度时，作为背光的发光元件被关闭，由此可以防止由于来自液晶元件的光泄漏造成的对比度的降低。

公开(公告)号：US07324123B2

公开(公告)日：2008-01-29

申请号：US11419345

申请日：2006-05-19

申请人： Shunpei Yamazaki ,  Jun Koyama ,  Yoshifumi Tanada ,  Mitsuaki Osame ,  Hajime Kimura ,  Ryota Fukumoto ,  Hiromi Yanai ,  Hideaki Shishido

发明人： Shunpei Yamazaki ,  Jun Koyama ,  Yoshifumi Tanada ,  Mitsuaki Osame ,  Hajime Kimura ,  Ryota Fukumoto ,  Hiromi Yanai ,  Hideaki Shishido

IPC分类号： G09G5/10 ,  G09G3/32

CPC分类号： G09G3/20 ,  G09G3/2022 ,  G09G3/3225 ,  G09G2300/0861 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2330/021 ,  G09G2340/0428 ,  G09G2360/141 ,  G09G2360/144

摘要： 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 and used. The switching is controlled by a display controller based on data of the outside light intensity. Accordingly, the visibility can be ensured in a wide range of situations, from under a fluorescent lamp in a dark place or inside, to under sunlight outside. In the second display mode, frequencies of a start pulse and a clock pulse to be inputted to a source signal line driver circuit are reduced and a driving voltage is decreased by the display controller; accordingly, a frame period can be longer than that in the first display mode and power consumption can be reduced.

摘要翻译： 使用光传感器接收外部光，并且根据外部光强度，表示多个灰度级的第一显示模式和表示比第一显示器中的数字更小的灰度级的第二显示器y模式 模式被切换和使用。 基于外部光强度的数据，由显示控制器控制切换。 因此，可以在广泛的情况下，从在黑暗的地方或内部的荧光灯到室外的阳光下确保可视性。 在第二显示模式中，通过显示控制器减少要输入到源极信号线驱动电路的起始脉冲和时钟脉冲的频率，并降低驱动电压。 因此，帧周期可以比第一显示模式中的帧周期长，并且可以降低功耗。

公开(公告)号：US20070279344A1

公开(公告)日：2007-12-06

申请号：US11802473

申请日：2007-05-23

申请人： Hajime Kimura ,  Hideaki Shishido ,  Shunpei Yamazaki

发明人： Hajime Kimura ,  Hideaki Shishido ,  Shunpei Yamazaki

IPC分类号： G09G3/30

CPC分类号： H01L27/1225 ,  G09G3/2022 ,  G09G3/2074 ,  G09G3/288 ,  G09G3/3233 ,  G09G2300/0443 ,  G09G2300/0452 ,  G09G2300/0465 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2300/0866 ,  G09G2310/0262 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2330/021

摘要： An object is to reduce a pseudo contour occurring in time gray scale method display. One pixel is divided into m subpixels (m is an integer of m≧2), and the area of the (s+1)th subpixel (1≦s≦m−1) is twice the area of the s-th subpixel. Further, one frame is divided into n subframes (n is an integer of n≧2), and a lighting period of the (p+1)th subframe (1≦p≦n−1) is 2m times longer than a lighting period of a p-th subframe. Then, at least one subframe of the n subframes is divided into a plurality of subpixels each having a lighting period shorter than that of the subframe so that the n subframes are increased to t subframes (t>n). In at least one subframe of the t subframes, lighting periods of the subframes in a lighting state are sequentially added by the m subpixels, so that a gray scale of the pixel is expressed. (174 words)

摘要翻译： 目的是减少在时间灰度方法显示中发生的伪轮廓。 一个像素被分成m个子像素（m是m> = 2的整数），并且第（s + 1）子像素（1 <= s <= m-1）的面积是s- th子像素。 此外，一帧被分成n个子帧（n是n> = 2的整数），并且第（p + 1）个子帧（1 <= p <= N-1）的发光周期IS 2 比第p子帧的发光时间长。 然后，将n个子帧的至少一个子帧分成多个子像素，每个子像素具有比子帧短的发光时间段，使得n个子帧增加到t个子帧（t> n）。 在t个子帧的至少一个子帧中，点亮状态下的子帧的点亮周期由m个子像素依次相加，从而表示像素的灰度级。 （174个字）

公开(公告)号：US07928929B2

公开(公告)日：2011-04-19

申请号：US11467072

申请日：2006-08-24

申请人： Hideaki Shishido ,  Hajime Kimura ,  Shunpei Yamazaki

发明人： Hideaki Shishido ,  Hajime Kimura ,  Shunpei Yamazaki

IPC分类号： G09G3/28

CPC分类号： G09G3/3225 ,  G09G3/2022 ,  G09G3/2033 ,  G09G3/204 ,  G09G3/2074 ,  G09G3/2077 ,  G09G2320/0266 ,  G09G2320/0276

摘要： A pixel is divided into m (m is an integer of m≧2) sub-pixels, and an area ratio of an s-th (s is an integer of 1 to m) sub-pixel is to be 2s−1. Also, k (k is an integer of k≧2) sub-frame groups including a plurality of sub-frames are provided in one frame, along with dividing one frame into n (n is an integer of n≧2) sub-frames, so that a ratio of a lighting period length of a t-th (t is an integer of 1 to n) sub-frame is 2(t−1)m. Further, each of the n sub-frames is divided into k sub-frames each having a lighting period length that is about 1/k of each of the n sub-frames, and one of these is provided in each of the k sub-frame groups.

摘要翻译： 像素分为m（m为m≥2的整数）子像素，s（s为1〜m的整数）子像素的面积比为2s-1。 此外，在一帧中设置包含多个子帧的k（k为k≥2的整数）子帧组，并将一帧分割为n（n为n≥2的整数）子帧 ，使得第t（t为1〜n的整数）子帧的点亮周期长度的比为2（t-1）m。 此外，n个子帧中的每一个被划分为k个子帧，每个子帧具有每个n个子帧的约1 / k的点亮周期长度，并且其中之一被提供在k个子帧中的每一个中， 框架组。

公开(公告)号：US20110181631A1

公开(公告)日：2011-07-28

申请号：US13080709

申请日：2011-04-06

申请人： Hideaki Shishido ,  Hajime Kimura ,  Shunpei Yamazaki

发明人： Hideaki Shishido ,  Hajime Kimura ,  Shunpei Yamazaki

IPC分类号： G09G3/30 ,  G09G5/10

CPC分类号： G09G3/3225 ,  G09G3/2022 ,  G09G3/2033 ,  G09G3/204 ,  G09G3/2074 ,  G09G3/2077 ,  G09G2320/0266 ,  G09G2320/0276

摘要： A pixel is divided into m (m is an integer of m≧2) sub-pixels, and an area ratio of an s-th (s is an integer of 1 to m) sub-pixel is to be 2s-1. Also, k (k is an integer of k≧2) sub-frame groups including a plurality of sub-frames are provided in one frame, along with dividing one frame into n (n is an integer of n≧2) sub-frames, so that a ratio of a lighting period length of a t-th (t is an integer of 1 to n) sub-frame is 2(t-1)m. Further, each of the n sub-frames is divided into k sub-frames each having a lighting period length that is about 1/k of each of the n sub-frames, and one of these is provided in each of the k sub-frame groups.

摘要翻译： 像素分为m（m为m≥2的整数）子像素，s（s为1〜m的整数）子像素的面积比为2s-1。 此外，在一帧中设置包含多个子帧的k（k为k≥2的整数）子帧组，并将一帧分割为n（n为n≥2的整数）子帧 ，使得第t（t为1〜n的整数）子帧的点亮周期长度的比为2（t-1）m。 此外，n个子帧中的每一个被划分为k个子帧，每个子帧具有每个n个子帧的约1 / k的点亮周期长度，并且其中之一被提供在k个子帧中的每一个中， 框架组。

公开(公告)号：US20100073406A1

公开(公告)日：2010-03-25

申请号：US12623620

申请日：2009-11-23

申请人： Hideaki Shishido ,  Hajime Kimura ,  Shunpei Yamazaki ,  Jun Koyama

发明人： Hideaki Shishido ,  Hajime Kimura ,  Shunpei Yamazaki ,  Jun Koyama

IPC分类号： G09G5/10

CPC分类号： G09G3/2033 ,  G09G3/2022 ,  G09G3/204 ,  G09G3/2077 ,  G09G3/3258 ,  G09G2300/0426 ,  G09G2300/0809 ,  G09G2300/0842 ,  G09G2320/0261 ,  G09G2320/0266 ,  G09G2320/0276 ,  H01L27/3265

摘要： The present invention provides a driving method of a display device for expressing gray scales with n bits (n is an integer) by dividing one frame into a plurality of subframes. By this driving method, pseudo contours which occur in displaying images by a time gray scale method can be reduced.

摘要翻译： 本发明提供一种用于通过将一帧划分为多个子帧来以n位（n为整数）表示灰度级的显示装置的驱动方法。 通过该驱动方法，可以减少通过时间灰度法显示图像中出现的伪轮廓。