WO2020084682A1 - Dispositif d'affichage, procédé de commande de dispositif d'affichage et programme - Google Patents

Dispositif d'affichage, procédé de commande de dispositif d'affichage et programme Download PDF

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Publication number
WO2020084682A1
WO2020084682A1 PCT/JP2018/039322 JP2018039322W WO2020084682A1 WO 2020084682 A1 WO2020084682 A1 WO 2020084682A1 JP 2018039322 W JP2018039322 W JP 2018039322W WO 2020084682 A1 WO2020084682 A1 WO 2020084682A1
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WO
WIPO (PCT)
Prior art keywords
correction
backlight
unit
light
light source
Prior art date
Application number
PCT/JP2018/039322
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English (en)
Japanese (ja)
Inventor
板倉　直樹
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
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.)
Filing date
Publication date
Application filed by Ｎｅｃディスプレイソリューションズ株式会社 filed Critical Ｎｅｃディスプレイソリューションズ株式会社
Priority to PCT/JP2018/039322 priority Critical patent/WO2020084682A1/fr
Publication of WO2020084682A1 publication Critical patent/WO2020084682A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Definitions

  • JP 2006-119295 A Japanese Patent Publication No. 2015-525038
  • the white light source includes, for example, a Blue LED light source and a Green LED light source. Blue LED light sources are combined with Red phosphors. In this way, the white light source is configured to generate white light by combining the light generated by exciting the red phosphor by the light of the blue LED light source and the light of three wavelengths emitted from the green LED light source. ing.
  • the difference in the light source wavelength of the wide color gamut monitor has the greatest effect on the characteristics of the y ( ⁇ ) 2 ° field and the 10 ° field near 520 [nm], and otherwise the 2 ° field of view.
  • the relative intensity changes at the same ratio in the 10-degree visual field. That is, the adjustment according to the gradation of the LCD is possible except near 520 [nm], but in the vicinity of 520 [nm], there is no choice but to adjust to either one of the 2-degree visual field and the 10-degree visual field. .
  • the CCFL has a large change in emission intensity depending on the temperature. Therefore, when an LED with completely different characteristics is combined with this, it is necessary to constantly monitor and correct the spectral distribution, and in order to achieve stable display, the device configuration becomes complicated.
  • a wide color gamut image can be displayed by a simple process.
  • the backlight unit 203 includes a white LED 204 that is a white LED element that serves as a light source, and a correction LED 205 (correction light source) that includes an LED element that serves as a light source that adjusts the wavelength of the white LED 204.
  • the correction LED 205 is a light source including a monochromatic (for example, green) LED element. The light emitted from the white LED 204 and the light emitted from the correction LED 205 are combined, and the backlight light is emitted from the backlight unit.
  • the calculation unit 102 compares the correction target value and the peak crest value of the detection value of the optical sensor 101, and calculates the ratio of the peak crest value in the Blue region (or Red region) and the Green region (step S118).
  • the video signal processing unit 400 controls the RGBGAIN 402 based on the calculated value so that these relative peak values approach the correction target value 303, and adjusts the GAIN of G (step S120). For example, when the peak value of the optical sensor 101 is higher than the correction target value 303, the video signal processing unit 400 adjusts RGBGAIN 402 to reduce the G gain, and when the peak value of the optical sensor 101 is lower than the correction target value 303. , G gain is increased.
  • the calculation unit 102 instructs the image generation unit 408 to generate a white image, and the image generation unit 408 inputs the generated white image to the video signal processing unit 400 and causes the display unit 200 to display the white image (step S200).
  • the calculation unit 102 acquires the output value of the emitted light on the display surface of the display unit 200 on which the white image is displayed, based on the detection value of the optical sensor 101 (step S202).
  • the display device 1 since the spectral distributions between the wide color gamut devices are brought close to each other, the characteristic difference between the 2 ° -10 ° field of view is reduced, and the color difference due to the display region can be reduced. Further, according to the display device 1, since the color difference due to the display area can be automatically reduced, complicated visual adjustment can be omitted in managing the colors and the monitor.
  • the display device 1A according to the second embodiment is different from the display device 1 according to the first embodiment in the configuration of the white LED 223.
  • the white LED 223 includes, for example, a Green LED, a Blue LED, and a Red phosphor.
  • the control unit calculates and controls the control amounts of the correction LED 205 and the Green LED so that the sum of the emission amount of the correction LED 205 and the emission amount of the Green LED in the white LED 223 is kept constant. Since the light emission amount of the LED is proportional to the average current, the control unit of the correction LED 205 and the GreenLED is calculated and controlled by the calculation unit 102 so that the sum of the currents of both the correction LED 205 and the GreenLED in the white LED 223 is constant. .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

Un aspect de la présente invention comprend : une unité de commande de rétroéclairage pour commander le rétroéclairage d'une unité d'affichage ; une unité de correction de rétroéclairage qui commande une source de lumière de correction pour corriger la longueur d'onde de la lumière émise par le rétroéclairage ; une unité de détection pour détecter la lumière émise par le rétroéclairage dans l'unité d'affichage ; et une unité arithmétique qui calcule la quantité de correction fournie par la source de lumière de correction sur la base de la valeur de détection de la lumière détectée par l'unité de détection, de sorte que la longueur d'onde du rétroéclairage devienne une valeur de référence. L'unité de correction de rétroéclairage règle la source de lumière de correction sur la base de la quantité de correction calculée par l'unité arithmétique.
PCT/JP2018/039322 2018-10-23 2018-10-23 Dispositif d'affichage, procédé de commande de dispositif d'affichage et programme WO2020084682A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/039322 WO2020084682A1 (fr) 2018-10-23 2018-10-23 Dispositif d'affichage, procédé de commande de dispositif d'affichage et programme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/039322 WO2020084682A1 (fr) 2018-10-23 2018-10-23 Dispositif d'affichage, procédé de commande de dispositif d'affichage et programme

Publications (1)

Publication Number Publication Date
WO2020084682A1 true WO2020084682A1 (fr) 2020-04-30

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PCT/JP2018/039322 WO2020084682A1 (fr) 2018-10-23 2018-10-23 Dispositif d'affichage, procédé de commande de dispositif d'affichage et programme

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WO (1) WO2020084682A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006253502A (ja) * 2005-03-11 2006-09-21 Nanao Corp 発光装置、発光強度調整方法及び液晶表示装置
JP2008097896A (ja) * 2006-10-10 2008-04-24 Sharp Corp バックライトユニット及び該ユニットを備える画像表示装置
US20130147364A1 (en) * 2011-12-12 2013-06-13 Young-min Park Backlight unit
JP2014164104A (ja) * 2013-02-25 2014-09-08 Canon Inc 表示装置及びその制御方法
JP2014174361A (ja) * 2013-03-11 2014-09-22 Canon Inc 画像表示装置及びその制御方法
JP2015049463A (ja) * 2013-09-03 2015-03-16 ソニー株式会社 情報処理装置、情報処理方法、プログラム、及び画像表示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006253502A (ja) * 2005-03-11 2006-09-21 Nanao Corp 発光装置、発光強度調整方法及び液晶表示装置
JP2008097896A (ja) * 2006-10-10 2008-04-24 Sharp Corp バックライトユニット及び該ユニットを備える画像表示装置
US20130147364A1 (en) * 2011-12-12 2013-06-13 Young-min Park Backlight unit
JP2014164104A (ja) * 2013-02-25 2014-09-08 Canon Inc 表示装置及びその制御方法
JP2014174361A (ja) * 2013-03-11 2014-09-22 Canon Inc 画像表示装置及びその制御方法
JP2015049463A (ja) * 2013-09-03 2015-03-16 ソニー株式会社 情報処理装置、情報処理方法、プログラム、及び画像表示装置

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