公开(公告)号：US20190149781A1

公开(公告)日：2019-05-16

申请号：US16225736

申请日：2018-12-19

Applicant: Japan Display Inc.

Inventor： Tatsuya Yata ,  Naoyuki Takasaki

IPC: H04N9/31 ,  G02B27/28 ,  G03B21/20 ,  G02B27/01

CPC classification number: H04N9/3144 ,  G02B27/0101 ,  G02B27/283 ,  G02B2027/0118 ,  G02B2027/014 ,  G02B2027/0159 ,  G03B21/2073 ,  H04N9/312 ,  H04N9/3155 ,  H04N9/3167 ,  H04N9/3179 ,  H04N9/3182

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.

公开(公告)号：US10200661B2

公开(公告)日：2019-02-05

申请号：US15797880

申请日：2017-10-30

Applicant: Japan Display Inc.

Inventor： Tatsuya Yata ,  Naoyuki Takasaki

IPC: H04N9/31 ,  G03B21/20 ,  G02B27/01 ,  G02B27/28

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.

公开(公告)号：US10032418B2

公开(公告)日：2018-07-24

申请号：US15583146

申请日：2017-05-01

Applicant: Japan Display Inc.

Inventor： Kazuhiko Sako ,  Naoyuki Takasaki ,  Tsutomu Harada ,  Tatsuya Yata ,  Shigenori Aoki

IPC: G06F3/038 ,  G09G3/34

Abstract: According to an aspect, a display apparatus includes: a plurality of light sources; a display device that includes a display area provided with n1 pixels and that is irradiated with light from the light sources; a light source controller controlling an operation of the light sources; and a display controller controlling an output gradation value of part or all of the pixels. The display area includes a plurality of partial areas, the partial areas corresponding to the light sources on a one-to-one basis. The light source controller determines the amount of light emitted from each light source corresponding to a corresponding one of the partial areas based on luminance of light required for the corresponding partial area. The display controller performs first correction and second correction when the amounts of light emitted from two light sources corresponding to two adjacent partial areas are different.

公开(公告)号：US20170316746A1

公开(公告)日：2017-11-02

申请号：US15496447

申请日：2017-04-25

Applicant: Japan Display Inc.

Inventor： Kazuhiko Sako ,  Naoyuki Takasaki ,  Tsutomu Harada ,  Tatsuya Yata ,  Shigenori Aoki

IPC: G09G3/34 ,  G02B27/01

CPC classification number: G09G3/3426 ,  G02B27/0101 ,  G02B2027/0118 ,  G09G2320/0646 ,  G09G2360/16

Abstract: According to an aspect, a display apparatus includes: a plurality of light sources; a display device irradiated with light from the light sources; and a controller. The display area includes a plurality of partial areas corresponding to the light sources on a one-to-one basis. Each of the partial areas includes a first area and a second area, the first area being irradiated with light from a first light source that corresponds thereto, and the second area being irradiated with light from the first light source and a second light source adjacent to the first light source. The controller controls an operation of the first light source based on whether the first area requires the light from the first light source and whether the second area obtains light required for display output by receiving the light from the second light source.

公开(公告)号：US09691338B2

公开(公告)日：2017-06-27

申请号：US14947669

申请日：2015-11-20

Applicant: Japan Display Inc.

Inventor： Susumu Kimura ,  Fumitaka Gotoh ,  Naoyuki Takasaki ,  Tsutomu Harada

IPC: G09G3/36 ,  G09G3/34

CPC classification number: G09G3/3607 ,  G09G3/3426 ,  G09G2300/0452 ,  G09G2320/0276 ,  G09G2320/0646 ,  G09G2340/06 ,  G09G2360/16

Abstract: According to an aspect, the liquid crystal display device includes: an expansion coefficient determining unit that determines an expansion coefficient of each of partial areas based on a signal level of the first, the second, and the third colors; a luminance level determining unit that determines a luminance level of each partial area based on the signal level; a signal processing unit that uses the expansion coefficient to expand the signal level; and a light source control unit that controls brightness of a light source based on the expansion coefficient and the luminance level. The light source can change the brightness of the partial areas individually. The light source control unit controls the light source such that the brightness of the light source in a partial area having a luminance level equal to or higher than a predetermined threshold is higher than the brightness based on the expansion coefficient.

公开(公告)号：US20160260395A1

公开(公告)日：2016-09-08

申请号：US15016341

申请日：2016-02-05

Applicant: Japan Display Inc.

Inventor： Kazuhiko SAKO ,  Naoyuki Takasaki ,  Tsutomu Harada

IPC: G09G3/36

CPC classification number: G09G3/3607 ,  G09G3/3426 ,  G09G3/3648 ,  G09G2300/0443 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2330/021 ,  G09G2360/148 ,  G09G2360/16

Abstract: A display device includes an image display panel, a light source unit, and a signal processing unit. The tentative expansion coefficient calculating unit calculates a tentative expansion coefficient. The tentative index value calculating unit calculates a tentative index value serving as an index of the irradiation amount of light based on the tentative expansion coefficient. The low-saturation pixel detecting unit detects low-saturation pixels in a certain region on an image display surface. The light irradiation amount calculating unit calculates a comparative light irradiation amount based on a detection by the low-saturation pixel detecting unit, a display quality maintenance reference value at which the display quality of colors displayed by the low-saturation pixels is maintained, and an index value calculated based on the tentative index value and calculates, based on the comparative light irradiation amount, a light irradiation amount serving as the irradiation amount of light.

Abstract translation: 显示装置包括图像显示面板，光源单元和信号处理单元。 暂定膨胀系数计算单元计算暂定膨胀系数。 临时指标值计算单元基于暂时膨胀系数计算用作光照射量的指标的暂定指数值。 低饱和度像素检测单元检测图像显示面上某一区域的低饱和度像素。 光照射量计算单元基于低饱和度像素检测单元的检测来计算比较光照射量，维持由低饱和度像素显示的颜色的显示质量的显示质量维持基准值，以及 基于试验性指标值计算出的指标值，并且基于比较光照射量计算用作光照射量的光照射量。

公开(公告)号：US20150364094A1

公开(公告)日：2015-12-17

申请号：US14731038

申请日：2015-06-04

Applicant: Japan Display Inc.

Inventor： Naoyuki Takasaki ,  Tsutomu Harada ,  Fumitaka Gotoh

IPC: G09G3/34 ,  G06T7/40 ,  G06T3/40 ,  G09G3/20 ,  G06T5/00

CPC classification number: G09G3/342 ,  G09G3/2096 ,  G09G3/3607 ,  G09G2300/0452 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/103 ,  G09G2340/06 ,  G09G2360/16

Abstract: A display device includes an image display panel section which displays an image on the basis of an image signal, a light source section which emits light to the image display panel section by dimming control according to a control signal based on the image signal, and a control section which determines on the basis of the image signal from a mode of change in light emission luminance of the light source section whether the image displayed by the image display panel section is a dynamic image or a static image and which performs switching according to a determination result between a static image control speed and a dynamic image control speed of the dimming control. The display device suppresses image quality degradation caused at the time of displaying a dynamic image or a static image.

Abstract translation: 显示装置包括基于图像信号显示图像的图像显示面板部分，根据基于图像信号的控制信号通过调光控制向图像显示面板部分发光的光源部分，以及 控制部分，其基于来自所述光源部分的发光亮度的变化模式的图像信号来确定所述图像显示面板部分显示的图像是动态图像还是静态图像，并且根据 静态图像控制速度与调光控制的动态图像控制速度之间的确定结果。 显示装置抑制在显示动态图像或静态图像时引起的图像质量劣化。

公开(公告)号：US20150339965A1

公开(公告)日：2015-11-26

申请号：US14705420

申请日：2015-05-06

Applicant: JAPAN DISPLAY INC.

Inventor： Tsutomu Harada ,  Naoyuki Takasaki ,  Toshiyuki Nagatsuma ,  Hirokazu Tatsuno

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G09G3/3406 ,  G09G3/36 ,  G09G2300/0452 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/0673 ,  G09G2360/16

Abstract: A display device includes a first processing circuit mounted on a substrate separate from a translucent substrate constituting a display panel, and a second processing circuit mounted on the translucent substrate. The first and the second processing circuits receive the same image data. The first processing circuit includes a determination unit that uses color values of a plurality of pixels constituting an image based on the image data to determine an expansion coefficient value serving as a value for improving luminance of the image, and outputs the expansion coefficient value to the second processing circuit. The second processing circuit includes an expansion processing unit that uses the expansion coefficient value to provide expansion processing for improving the luminance of the image for the image based on the image data.

Abstract translation: 显示装置包括安装在与构成显示面板的透光性基板分离的基板上的第一处理电路和安装在透光性基板上的第二处理电路。 第一和第二处理电路接收相同的图像数据。 第一处理电路包括：确定单元，其基于图像数据使用构成图像的多个像素的颜色值，以确定用作提高图像亮度的值的展开系数值，并将展开系数值输出到 第二处理电路。 第二处理电路包括扩展处理单元，该扩展处理单元使用扩展系数值来提供用于基于图像数据提高图像的图像的亮度的扩展处理。

公开(公告)号：US20150109359A1

公开(公告)日：2015-04-23

申请号：US14505084

申请日：2014-10-02

Applicant: Japan Display Inc.

Inventor： Fumitaka Gotoh ,  Tsutomu Harada ,  Naoyuki Takasaki

IPC: G09G3/34 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3406 ,  G09G3/3648 ,  G09G5/04 ,  G09G2300/0452 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2330/023 ,  G09G2380/10

Abstract: A display device includes: an image display unit in an image display region, the image display unit including a plurality of main pixels each including sub-pixels; a light source portion that irradiates the image display region; a signal correction unit that calculates saturation and value of the main pixels based on first color information to be displayed on a predetermined pixel, the first color information being obtained based on an input video signal, and generates second color information by correcting the first color information based on the calculated saturation and value; a signal generation unit that calculates the saturation and the value of the main pixels based on the second color information, and generates a signal for determining light source luminance of the light source based on the calculated saturation and value; and a light source control unit that controls luminance of the light source based on the signal.

Abstract translation: 显示装置包括：图像显示区域中的图像显示单元，所述图像显示单元包括各自包括子像素的多个主像素; 照射所述图像显示区域的光源部; 信号校正单元，其基于要在预定像素上显示的第一颜色信息来计算主像素的饱和度和值，基于输入视频信号获得第一颜色信息，并且通过校正第一颜色信息来生成第二颜色信息 基于计算的饱和度和值; 信号生成单元，其基于所述第二颜色信息计算所述主像素的饱和度和所述值，并且基于所计算的饱和度和值生成用于确定所述光源的光源亮度的信号; 以及光源控制单元，其基于该信号来控制光源的亮度。

公开(公告)号：US20150109351A1

公开(公告)日：2015-04-23

申请号：US14519755

申请日：2014-10-21

Applicant: Japan Display Inc.

Inventor： Tsutomu Harada ,  Naoyuki Takasaki ,  Susumu Kimura ,  Yasuhisa Shiraishi

IPC: G09G3/36 ,  G09G3/34

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。