WO2015131589A1 - Dispositif de compensation de dominante de couleur et dispositif d'affichage - Google Patents

Dispositif de compensation de dominante de couleur et dispositif d'affichage Download PDF

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Publication number
WO2015131589A1
WO2015131589A1 PCT/CN2014/092801 CN2014092801W WO2015131589A1 WO 2015131589 A1 WO2015131589 A1 WO 2015131589A1 CN 2014092801 W CN2014092801 W CN 2014092801W WO 2015131589 A1 WO2015131589 A1 WO 2015131589A1
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WO
WIPO (PCT)
Prior art keywords
viewing angle
color shift
information
compensation device
angle information
Prior art date
Application number
PCT/CN2014/092801
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English (en)
Chinese (zh)
Inventor
占红明
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2015131589A1 publication Critical patent/WO2015131589A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/73—Colour balance circuits, e.g. white balance circuits or colour temperature control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6083—Colour correction or control controlled by factors external to the apparatus
    • H04N1/6088—Colour correction or control controlled by factors external to the apparatus by viewing conditions, i.e. conditions at picture output

Definitions

  • Embodiments of the present invention relate to a color shift compensation device and a display device.
  • display technology uses a single display.
  • the display screen cannot be changed according to the change in the orientation of the viewer.
  • the viewing direction of the user is changed from the front to the oblique direction
  • the brightness, contrast, color gamut, and the like of the liquid crystal display device may change, resulting in a decrease in visual effect.
  • some high-end displays or special display places, such as medical, drawing, etc. have a higher requirement for the visual character bias (color difference of different viewing angles).
  • Embodiments of the present invention provide a color shift compensation device and a display device capable of reducing color shift caused by a change in viewing angle of a display panel.
  • At least one embodiment of the present invention provides a color shift compensation apparatus including: a viewing angle acquisition module configured to acquire viewing angle information when a user views an image in a display panel; and a data receiving processing module configured to view according to the viewing The angle information obtains the color shift amount information corresponding to the viewing angle information; and the color shift compensation module is configured to compensate the chromaticity point of the video signal according to the color shift amount information, so that the display panel is compensated according to the The subsequent video signal is displayed as an image.
  • the viewing angle acquisition module acquires the viewing angle information at preset time intervals.
  • the viewing angle acquisition module sends the viewing angle information to the data receiving processing module, so that the data receiving processing module obtains the viewing angle information according to the viewing angle information. Corresponding color shift amount information.
  • the user sends a signal to the viewing angle acquisition module by using a signal transmitting device, and the viewing angle acquisition module acquires the user according to the received signal. View angle information when viewing images in the display panel.
  • the viewing angle acquisition module includes: an image capturing unit configured to acquire face image information of the user; and an image detecting unit configured to obtain the user according to the face image information Viewing angle information.
  • the image detecting unit processes the face image information to obtain position information of the eyes of the user, and calculates the user's viewing according to the position information of the eyes. Angle information.
  • the camera unit is located in the middle of the display panel or in the middle of the display panel frame.
  • the camera unit is disposed in the middle of the upper frame of the display panel.
  • the viewing angle acquisition module includes one or more camera units.
  • the data receiving processing module includes a storage unit and an obtaining unit.
  • the storage unit is configured to store a correspondence between the viewing angle information and the color shift amount information; the acquiring unit is configured to read out corresponding color shift amount information from the storage unit according to the viewing angle information.
  • Another embodiment of the present invention also provides a display device comprising the color shift compensation device of any of the above.
  • FIG. 1 is a schematic diagram of a color shift compensation device according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of another color shift compensation device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of still another color shift compensation device according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of still another color shift compensation device according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of still another color shift compensation device according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of still another color shift compensation device according to an embodiment of the present invention.
  • the color shift compensation device includes a viewing angle acquisition module 1, a data reception processing module 2, and a color shift compensation module 3.
  • the viewing angle acquisition module 1 is configured to acquire viewing angle information when the user views an image in the display panel;
  • the data receiving processing module 2 is configured to obtain color shift amount information corresponding to the viewing angle information according to the viewing angle information;
  • the color shift compensation module 3 is configured to compensate the chromaticity point of the video signal according to the color shift amount information, so that the display panel performs image display according to the compensated video signal.
  • the color shift compensation device acquires the corresponding color shift amount information according to the viewing angle information when the user views the image in the display panel, and compensates the chromaticity point of the video signal according to the obtained color shift amount information.
  • the display panel can automatically adjust the chromaticity under different viewing angles, effectively reducing the color shift caused by the change of the viewing angle.
  • the viewing angle acquisition module may acquire the viewing angle information at preset time intervals. For example, the viewing angle acquisition module may acquire viewing angle information once every 2 or 3 seconds.
  • the acquired information may be immediately sent to the data receiving processing module, or the acquired information may be stored, and then waited for the data receiving module to find the stored information.
  • the viewing angle information required.
  • the data receiving processing module can obtain the color shift amount information corresponding to the viewing angle information according to the obtained viewing angle information.
  • the viewing angle acquisition module acquires viewing angle information.
  • the user may send a signal to the viewing angle acquisition module through the signal transmitting device, and then the viewing angle acquisition module acquires corresponding viewing angle information according to the received signal.
  • a corresponding signal receiving device may be disposed in the viewing angle acquisition module, and the signal receiving device determines the viewing angle information of the user according to the received signal.
  • different sensors may be disposed in the viewing angle acquisition module, such as an infrared (IR) sensor or a radio frequency (RF) sensor. The user's viewing angle information is obtained through the sensor.
  • IR infrared
  • RF radio frequency
  • the viewing angle acquisition module may further acquire corresponding viewing angle information according to image information of the user.
  • FIG. 2 is a schematic diagram of another color shift compensation device provided by an embodiment of the present invention.
  • the color shift compensation device includes a viewing angle acquisition module, a data reception processing module 2, and a color shift compensation module 3.
  • the viewing angle acquisition module includes an image capturing unit 11 and an image detecting unit 12.
  • the camera unit 11 is configured to acquire face image information of the user; the image detecting unit 12 is configured to obtain viewing angle information of the user according to the face image information.
  • the imaging unit 11 first captures an image or video to the user.
  • the user may be photographed every 1 second or two seconds to obtain the user's face image information.
  • the image detecting unit 12 processes the acquired face image information by using a face detection algorithm to obtain the face position information of the user, thereby obtaining angle information of the user with respect to the display panel.
  • the image detecting unit may further process the acquired face image information by using a human eye detection algorithm to obtain position information of the eyes of the user, and then calculate the viewing angle information of the user according to the obtained position information of the two eyes. So that the viewing angle information is more accurate.
  • the camera unit 11 may be located in the middle of the display panel or in the middle of the display panel bezel.
  • FIG. 3 is a schematic diagram of still another color shift compensation device according to an embodiment of the present invention.
  • the color shift compensation device includes a viewing angle acquisition module, a data reception processing module 2, and a color shift compensation module 3.
  • the viewing angle acquisition module includes an imaging unit 11 and an image detection unit 12.
  • the imaging unit 11 is located, for example, in the middle of the upper frame 41 of the display panel 4.
  • the number of image pickup units may be one or more, and preferably, may be plural.
  • the plurality of image pickup units may be disposed at different positions, so that the face image information of the user can be acquired at different different angles of view.
  • the viewing angle acquisition module includes two image capturing units 111 and 112, and an image detecting unit 12.
  • Camera unit 111 And 112 are disposed on the upper bezel 41 of the display panel 4 in the horizontal direction.
  • the camera unit first captures an image or video to the user at the same time. For example, the user may be photographed every 1 second or two seconds to respectively acquire two face images of the user.
  • the image detecting unit 12 processes the acquired face image by a human eye detection algorithm to obtain image information of the human eye.
  • the image detecting unit processes the human eye image information to obtain spatial position information of the human eye, thereby obtaining angle information of the user with respect to the display panel.
  • the camera unit can also directly collect the human eye image of the user, and the image detecting unit processes the human eye image to obtain spatial position information of the human eye.
  • the viewing angle acquisition module includes a light source 5, an imaging unit 11, and an image detecting unit 12.
  • the light source 5 may be disposed on the bezel 41 of the display panel 4 or may be disposed at other locations.
  • the image pickup unit 11 is disposed on an upper frame of the display panel 4.
  • the light source emits a beam of light in the infrared or near-infrared spectrum that illuminates the face of the user.
  • the image pickup unit 11 can photograph the user, for example, every one second or two seconds to acquire face image information of the user.
  • the image detecting unit 12 detects the position of the human eye according to the brightening effect in the face image, and further processes the image information to obtain the viewing angle information of the user.
  • the image detecting unit 12 can also perform difference and image filtering on the image obtained when the light source illuminates the human face and the image obtained without the light source illuminating the human face to obtain the position information of the human eye.
  • the color shift compensation device includes a viewing angle acquisition module, a data reception processing module 2, and a color shift compensation module 3.
  • the viewing angle acquisition module includes a radio frequency transmitter 6, a radio frequency receiver 7, and a controller 8.
  • the radio frequency transmitter 6 and controller 8 can be included in a user handset.
  • the radio frequency receiver 7 may be disposed on the bezel 41 of the display panel 4 as shown in FIG. 6, but is not limited thereto.
  • the controller 8 includes a storage unit and a control unit.
  • the storage unit stores a correspondence between user location information and viewing angle information.
  • the control unit controls the radio frequency transmitter to emit a radio frequency signal corresponding to the viewing angle information according to the viewing angle information selected by the user.
  • the radio frequency receiver receives the radio frequency signal to determine viewing angle information of the user.
  • the user selects the corresponding viewing angle information stored in the storage unit of the controller 8 according to the location of the user. Then, the control unit of the controller 8 transmits a signal corresponding to the viewing angle information to the radio frequency transmitter 6.
  • the RF transmitter 6 receives the signal and transmits a radio frequency signal corresponding to the viewing angle information.
  • the radio frequency receiver 7 receives the radio frequency signal to determine the user's The angle information is viewed, and the viewing angle information is transmitted to the data reception processing module 2.
  • the radio frequency transmitter can be replaced by an infrared emitter
  • the radio frequency receiver can be replaced by an infrared receiver
  • the data receiving processing module may include a storage unit and an obtaining unit.
  • the storage unit is configured to store a correspondence between the viewing angle information and the color shift amount information; the acquiring unit is configured to read out corresponding color shift amount information from the storage unit according to the viewing angle information.
  • the correspondence between the viewing angle information and the color shift amount information may be set according to the position at which the viewing angle acquisition module acquires the information, and the correspondence relationship set by the viewing angle acquisition module for different positions is also different.
  • the color shift amount information in the storage unit may be prepared in advance according to the viewing angle characteristic of the display panel, and the color shift amount may be set for each of the plurality of color light components constituting the display light.
  • the data receiving processing module obtains the viewing angle information of the user, the corresponding color offset information is searched in the storage unit. Then, the data receiving processing module sends the obtained color shift amount information to the color shift compensation module.
  • the color shift compensation module compensates the chromaticity point of the video signal according to the color shift amount information.
  • the color cast compensation module can compensate for the chrominance points of the video signal using Accurate Color Capture (ACC) technology.
  • ACC Accurate Color Capture
  • the color shift compensation module sends the compensated video signal to the display panel, and the display panel displays according to the compensated video signal.
  • the display panel can automatically adjust the chromaticity under different viewing angles, effectively reducing the color shift caused by the change of the viewing angle.
  • the display device may be any display product or component such as a notebook computer display screen, an electronic paper, an organic light emitting diode display, a liquid crystal display, a liquid crystal television, a digital photo frame, a mobile phone, a tablet computer, or the like.
  • the corresponding color shift amount information is obtained according to the viewing angle information of the image viewed by the user in the display panel, and the chromaticity of the video signal is obtained according to the obtained color shift amount information.
  • the point is compensated so that the display panel can automatically adjust the chromaticity under different viewing angles, effectively reducing the color shift caused by the change of the viewing angle.

Abstract

L'invention concerne un dispositif de compensation de dominante de couleur et un dispositif d'affichage. Le dispositif de compensation de dominante de couleur comprend : un module d'acquisition d'angle de visualisation (1) configuré pour acquérir des informations d'angle de visualisation lorsqu'un utilisateur visionne une image dans un écran d'affichage (4) ; un module de traitement de réception de données (2) configuré pour obtenir des informations de quantité de dominante de couleur correspondant aux informations d'angle de visualisation en fonction des informations d'angle de visualisation ; et un module de compensation de dominante de couleur (3) configuré pour compenser un point de chrominance d'un signal vidéo en fonction des informations de quantité de dominante de couleur, de manière que l'image soit affichée sur l'écran d'affichage (4) conformément au signal vidéo compensé. Par conséquent, l'écran d'affichage (4) peut automatiquement régler la chrominance dans la situation de différents angles de visualisation, ce qui permet de réduire efficacement la dominante de couleur générée en raison de la variation d'angle de visualisation.
PCT/CN2014/092801 2014-03-06 2014-12-02 Dispositif de compensation de dominante de couleur et dispositif d'affichage WO2015131589A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410080731.1A CN103888742A (zh) 2014-03-06 2014-03-06 色偏补偿装置及显示装置
CN201410080731.1 2014-03-06

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CN103888742A (zh) * 2014-03-06 2014-06-25 京东方科技集团股份有限公司 色偏补偿装置及显示装置
CN104680992B (zh) * 2015-03-09 2018-05-11 深圳市华星光电技术有限公司 一种液晶显示器的驱动方法及驱动装置
CN105227944B (zh) * 2015-09-25 2017-12-26 联想(北京)有限公司 一种信息处理方法和电子设备
CN106157931A (zh) * 2016-06-28 2016-11-23 广东欧珀移动通信有限公司 控制方法、控制装置及电子装置
CN106251822A (zh) * 2016-09-27 2016-12-21 南京中电熊猫液晶显示科技有限公司 一种液晶显示器的色偏控制方法
CN109036271B (zh) * 2018-08-17 2020-06-12 武汉华星光电半导体显示技术有限公司 曲面屏弯折区色偏修正的方法、装置、存储介质及终端
CN111091785B (zh) * 2018-10-24 2021-11-02 上海和辉光电股份有限公司 一种色偏补偿方法及装置
CN112419997B (zh) * 2019-08-23 2022-06-10 深圳Tcl数字技术有限公司 一种色度补偿方法、显示装置及存储介质
CN113360005B (zh) * 2020-03-04 2022-10-18 Oppo广东移动通信有限公司 色偏调整方法及相关产品
CN112309317A (zh) * 2020-10-22 2021-02-02 北京虚拟动点科技有限公司 屏幕色差补偿方法、装置、系统、电子设备及存储介质
CN112863453B (zh) * 2021-01-07 2022-07-12 Tcl华星光电技术有限公司 全息显示方法及全息显示系统
CN112967696A (zh) * 2021-03-22 2021-06-15 北海惠科光电技术有限公司 液晶面板显示参数调节方法、系统、液晶面板及存储介质
CN113380171A (zh) * 2021-06-03 2021-09-10 成都天马微电子有限公司 色偏补偿方法、显示器和车载显示装置

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