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公开(公告)号：US11749214B2
公开(公告)日：2023-09-05
申请号：US17208682
申请日：2021-03-22
Applicant: Japan Display Inc.
Inventor： Kazuhiko Sako , Tsutomu Harada , Naoyuki Takasaki , Toshiyuki Nagatsuma
CPC classification number: G09G3/3406 , G09G3/2003 , G09G3/2074 , G09G3/3426 , G09G3/3607 , G09G3/3648 , G09G2300/0452 , G09G2310/08 , G09G2320/0233 , G09G2320/0238 , G09G2320/0646 , G09G2320/0653 , G09G2360/16
Abstract: A display device is provided and includes display panel comprising plurality of pixels; and light source device configured to emit light that illuminates display panel, wherein display panel is configured to control operation of light source device, display panel does not lower luminance of light for second predetermined time or longer after display panel has raised luminance of light by predetermined amount of luminance change or more within first predetermined time, and when image changes from first image other than raster image and ramp image to second image that is either of raster image and ramp image, display panel lowers luminance of light within time shorter than second predetermined time even after luminance of light has been raised by predetermined amount of luminance change or more within first predetermined time.
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公开(公告)号：US10254541B2
公开(公告)日：2019-04-09
申请号：US15797717
申请日：2017-10-30
Applicant: Japan Display Inc.
Inventor： Tatsuya Yata , Naoyuki Takasaki
IPC: G03B21/28 , G02B27/01 , G02B27/28 , G02F1/01 , G02F1/1335 , G02F1/1368 , G02F1/137 , G09G3/34 , G09G3/00 , G02B5/30
Abstract: According to one embodiment, a display device includes a polarization separation element which transmits first polarized light, and reflects second polarized light, a first optical modulation unit which displays a first image by using transmitted light, a second optical modulation unit which displays a second image by using reflected light, and a projector which projects the first image onto a first projection area of a projection plane, and projects the second image onto a second projection area different from the first projection area of the projection plane.
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公开(公告)号：US10121421B2
公开(公告)日：2018-11-06
申请号：US15794505
申请日：2017-10-26
Applicant: Japan Display Inc.
Inventor： Naoyuki Takasaki , Tsutomu Harada , Susumu Kimura
IPC: G09G3/34
Abstract: A display device includes an image display panel whose display is controlled by an image signal, a backlight which includes light sources and lights the image display panel from behind, and a display control section which calculates, based on the image signal, the required luminance value of the backlight for each divided area of the image display panel, calculates a tentative lighting level of each light source based on luminance distribution information for the backlight stored previously and the required luminance values, sets the lighting level of a first light source whose tentative lighting level exceeds an upper limit to the upper limit, determines the lighting level of a second light source whose tentative lighting level does not exceed the upper limit, based on the lighting level of the first light source, luminance distribution information, and required luminance value, and controls the backlight by the lighting levels.
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公开(公告)号：US20180061368A1
公开(公告)日：2018-03-01
申请号：US15677326
申请日：2017-08-15
Applicant: Japan Display Inc.
Inventor： Kazuhiko Sako , Kazunari Tomizawa , Tsutomu Harada , Naoyuki Takasaki , Tae Kurokawa
CPC classification number: G09G5/10 , G06T5/007 , G09G3/3208 , G09G3/3406 , G09G3/342 , G09G3/3607 , G09G3/3611 , G09G2300/0452 , G09G2320/0271 , G09G2320/0646 , G09G2320/066 , G09G2340/06 , G09G2360/16
Abstract: According to an aspect, a display apparatus includes: an image display panel including a plurality of pixels and displaying an image; and a signal processor generating a second signal by multiplying signal values for a plurality of sub-pixels making up each of the plurality of pixels by a gain, the signal values being included in a first signal that is an input signal of the image. The the signal processor calculates a luminance of each of the plurality of pixels based on the signal values of the sub-pixels included in the respective pixels. The signal processor increases the gain by which the signal values of the sub-pixels of the pixel having a luminance greater than a first luminance threshold are multiplied, in accordance with the luminance of the corresponding pixel.
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公开(公告)号：US20170221433A1
公开(公告)日：2017-08-03
申请号：US15492640
申请日：2017-04-20
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Naoyuki Takasaki , Akira Sakaigawa
IPC: G09G3/36
CPC classification number: G09G3/3607 , G09G3/3413 , G09G3/342 , G09G3/3648 , G09G2300/0439 , G09G2300/0443 , G09G2300/0452 , G09G2320/0233 , G09G2320/0646 , G09G2330/021 , G09G2360/16
Abstract: In a display device, pixels each including first to fourth subpixels that respectively display first to third primary colors and fourth color are arranged on an image display panel. A lighting unit emits light to the panel from the rear thereof. A control unit calculates a required luminance value for each block of the display surface of the panel based on an input image signal, determines a light source lighting amount of the lighting unit based on luminance distribution information on the lighting unit so as to satisfy the required luminance value, generates luminance information on each pixel based on the luminance distribution information and light source lighting amount, generates an output image signal that drives the subpixels based on the luminance information and input image signal, controls the lighting unit by the light source lighting amount, and controls the panel by the output image signal.
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Patent Agency Ranking
公开(公告)号：US09659531B2
公开(公告)日：2017-05-23
申请号：US14668324
申请日：2015-03-25
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Naoyuki Takasaki , Akira Sakaigawa , Amane Higashi
CPC classification number: G09G3/3607 , G09G3/3413 , G09G3/342 , G09G3/3648 , G09G2300/0439 , G09G2300/0443 , G09G2300/0452 , G09G2320/0233 , G09G2320/0646 , G09G2330/021 , G09G2360/16
Abstract: In a display device, pixels each including first to fourth subpixels that respectively display first to third primary colors and fourth color are arranged on an image display panel. A lighting unit emits light to the panel from the rear thereof. A control unit calculates a required luminance value for each block of the display surface of the panel based on an input image signal, determines a light source lighting amount of the lighting unit based on luminance distribution information on the lighting unit so as to satisfy the required luminance value, generates luminance information on each pixel based on the luminance distribution information and light source lighting amount, generates an output image signal that drives the subpixels based on the luminance information and input image signal, controls the lighting unit by the light source lighting amount, and controls the panel by the output image signal.
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7.发明授权Display device, electronic apparatus, and method for driving display device 有权用于驱动显示装置的显示装置，电子设备和方法公开(公告)号：US09520094B2
公开(公告)日：2016-12-13
申请号：US14519755
申请日：2014-10-21
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Naoyuki Takasaki , Susumu Kimura , Yasuhisa Shiraishi
CPC classification number: G09G3/3607 , G09G3/3413
Abstract: According to an aspect, a display device includes: an image display panel; and a planar light source including a light guide plate and an edge-lit light source, the light guide plate illuminating the image display panel from a back side, the edge-lit light source including a plurality of light sources arranged facing a plane of incidence; and a controller that controls luminance of each of the light sources independently. The controller stores therein, as lookup tables for the respective light sources, information on light intensity distributions of light that is incident on the light guide plate from the respective light sources and is emitted to a plane of the image display panel from the light guide plate, and controls a light quantity of each of the light sources based on information on an input signal of an image, and on the lookup tables.
Abstract translation: 根据一方面，一种显示装置包括：图像显示面板; 以及包括导光板和边缘照明光源的平面光源，所述导光板从背面照射所述图像显示面板，所述边缘照明光源包括面向入射平面布置的多个光源 ; 以及独立地控制各个光源的亮度的控制器。 控制器作为各个光源的查找表存储有关于从各个光源入射到导光板上的光的光强度分布的信息，并从导光板发射到图像显示面板的平面 并且基于关于图像的输入信号的信息以及查找表来控制每个光源的光量。
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8.发明授权Display device having signal processing circuits, electronic apparatus having display device, driving method of display device, and signal processing method 有权具有信号处理电路的显示装置，具有显示装置的电子设备，显示装置的驱动方法以及信号处理方法公开(公告)号：US09460675B2
公开(公告)日：2016-10-04
申请号：US14198210
申请日：2014-03-05
Applicant: Japan Display Inc.
Inventor： Tsutomu Harada , Akira Sakaigawa , Naoyuki Takasaki , Fumitaka Goto
CPC classification number: G09G3/3648 , G09G3/3426 , G09G5/06 , G09G2300/0408 , G09G2300/0452 , G09G2320/064 , G09G2320/0673 , G09G2340/06
Abstract: According to an aspect, a display device includes: an image display panel; and a plurality of signal processing circuits that are responsible for respective regions in the image display panel, that convert an input value of an input HSV color space of an input signal to each of their own responsible regions into an extension value of an extended HSV color space to generate an output signal of the extension value for the image display panel. The signal processing circuits decide an extension coefficient αA for the image display panel in its entirety in a cooperative manner. The signal processing circuit, regarding its own responsible region, calculates an output signal of each of a first sub-pixel, a second sub-pixel, third sub-pixel, and a fourth sub-pixel.
Abstract translation: 根据一方面，一种显示装置包括：图像显示面板; 以及负责图像显示面板中的各个区域的多个信号处理电路，其将输入信号的输入HSV颜色空间的输入值转换为其各自的负责区域中的每一个，使其扩展为HSV颜色的扩展值 用于生成图像显示面板的扩展值的输出信号的空间。 信号处理电路以合作的方式整体地确定图像显示面板的扩展系数αA。 信号处理电路关于其自己的负责区域，计算第一子像素，第二子像素，第三子像素和第四子像素中的每一个的输出信号。
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公开(公告)号：US20150109350A1
公开(公告)日：2015-04-23
申请号：US14505145
申请日：2014-10-02
Applicant: Japan Display Inc.
Inventor： Fumitaka Gotoh , Tsutomu Harada , Masaaki Kabe , Tae Kurokawa , Kojiro Ikeda , Toshiyuki Nagatsuma , Akira Sakaigawa , Naoyuki Takasaki , Amane Higashi
CPC classification number: G09G3/3607 , G09G5/10 , G09G2300/0452
Abstract: A display device includes: an image display unit that includes a plurality of main pixels in an image display region, the image display unit including sub-pixels; a light source that irradiates the image display region; a light source control unit that controls luminance of the light source; and a color information correction processing unit that corrects first color information that is obtained based on the luminance of the light source and an input video signal to second color information, when color information of at least one of a red pixel, a green pixel, and a blue pixel included in the first color information exceeds a predetermined threshold, the second information is corrected by degenerating color information of the red pixel, the green pixel, and the blue pixel, and by adding color information of the white pixel included in the first color information based on the degenerated color information.
Abstract translation: 显示装置包括：图像显示单元，其包括图像显示区域中的多个主要像素，所述图像显示单元包括子像素; 照射图像显示区域的光源; 光源控制单元，其控制所述光源的亮度; 以及颜色信息校正处理单元，当将红色像素，绿色像素以及绿色像素中的至少一种的颜色信息作为颜色信息时，将基于光源的亮度和输入视频信号的亮度获得的第一颜色信息校正为第二颜色信息 包括在第一颜色信息中的蓝色像素超过预定阈值，通过对红色像素，绿色像素和蓝色像素的颜色信息进行退化来校正第二信息，并且通过将包括在第一颜色信息中的第一颜色信息中的白色像素的颜色信息相加 基于退化颜色信息的颜色信息。
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公开(公告)号：US20200036947A1
公开(公告)日：2020-01-30
申请号：US16590626
申请日：2019-10-02
Applicant: Japan Display Inc.
Inventor： Tatsuya Yata , Naoyuki Takasaki
Abstract: According to one embodiment, a display device includes an optical modulation element configured to emit image light corresponding to an image by using illumination light from an illumination device, a polarization control element configured to emit first polarized light, and second polarized light on the basis of the image light receiving from the optical modulation element, a polarization separation element configured to transmit the first polarized light as transmitted light and reflect the second polarized light as reflected light, and a projector configured to project the transmitted light onto a first projection area of a projection plane, and projects reflected light onto a second projection area of the projection plane.
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