JP2002006796A - Display device - Google Patents
Display deviceInfo
- Publication number
- JP2002006796A JP2002006796A JP2000189691A JP2000189691A JP2002006796A JP 2002006796 A JP2002006796 A JP 2002006796A JP 2000189691 A JP2000189691 A JP 2000189691A JP 2000189691 A JP2000189691 A JP 2000189691A JP 2002006796 A JP2002006796 A JP 2002006796A
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- JP
- Japan
- Prior art keywords
- display
- correction signal
- time
- color
- value
- Prior art date
- Legal status (The legal status 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 status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、カラーモニタ装置
等の表示装置に関し、特に表示色の経年変化を補償する
技術に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device such as a color monitor device, and more particularly, to a technique for compensating for aging of a display color.
【０００２】[0002]
【従来の技術】ＣＲＴ（陰極線管）、ＰＤＰ（プラズマ
表示体）、ＬＣＤ（液晶表示体）、ＥＬＤ（エレクトロ
ルミネッセンス表示体）、ＦＥＤ（フィールドエミッシ
ョン表示体）等を利用したカラーモニタ装置等の表示装
置では、その長時間の使用によりＲ，Ｇ，Ｂの蛍光体が
劣化して表示すべき輝度が低下し、色の濃度が濃くな
る。また、それらの蛍光体の劣化特性は個々のＲ（赤）
蛍光体、Ｇ（緑）蛍光体、Ｂ（青）蛍光体ごとに異な
る。2. Description of the Related Art Display such as a color monitor device using a CRT (cathode ray tube), PDP (plasma display), LCD (liquid crystal display), ELD (electroluminescence display), FED (field emission display) and the like. In the apparatus, the R, G, and B phosphors are deteriorated due to long-time use, and the luminance to be displayed is reduced, and the color density is increased. The degradation characteristics of these phosphors are represented by individual R (red)
It differs for each phosphor, G (green) phosphor, and B (blue) phosphor.
【０００３】[0003]
【発明が解決しようとする課題】したがって、表示装置
をその製品出荷時に所定の色温度（白バランス）や肌色
に調整しておいても、長期間にわたる使用により各色の
輝度低下がばらばらに発生し、色温度（白バランス）や
肌色が変化して画質が劣化する。Therefore, even if the display device is adjusted to a predetermined color temperature (white balance) or flesh color at the time of shipment of the product, a decrease in the brightness of each color is caused by use over a long period of time. In addition, the color temperature (white balance) and the skin color change to deteriorate the image quality.
【０００４】本発明の目的は、蛍光体の劣化に応じて色
信号に補正を加えるようにして上記した問題を解決した
表示装置を提供することである。It is an object of the present invention to provide a display device which solves the above-mentioned problem by correcting a color signal in accordance with the deterioration of a phosphor.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
の第１の発明は、色信号Ｒ，Ｇ，Ｂによる表示体での表
示率の時間積分値を得る手段と、該時間積分値及び前記
表示体の予め得ておいたＲ，Ｇ，Ｂの蛍光体の経時劣化
特性に応じて輝度と色温度が所定値となる補正信号を生
成する手段と、該補正信号により輝度と色温度を補正す
る手段とを具備するよう構成した。According to a first aspect of the present invention, there is provided a means for obtaining a time integration value of a display rate on a display body by using color signals R, G, and B, Means for generating a correction signal having a predetermined value of luminance and color temperature in accordance with the time-dependent deterioration characteristics of the R, G, and B phosphors obtained in advance of the display body; Correction means.
【０００６】第２の発明は、色信号Ｒ，Ｇ，Ｂによる表
示体での表示の時間積分値を得るする手段と、該時間積
分値及び前記表示体の予め得ておいたＲ，Ｇ，Ｂの蛍光
体の経時劣化特性に応じて肌色が所定値となる補正信号
を生成する手段と、該補正信号により色合いと色濃度を
補正する手段とを具備するよう構成した。According to a second aspect of the present invention, there is provided means for obtaining a time integrated value of a display on a display by color signals R, G, and B, and a method for obtaining the time integrated value and R, G, and B previously obtained on the display. A means is provided for generating a correction signal with a flesh color having a predetermined value in accordance with the aging deterioration characteristics of the phosphor B, and means for correcting the hue and the color density based on the correction signal.
【０００７】第３の発明は、第１又は第２の発明におい
て、前記補正信号生成手段は、前記時間積分値と前記
Ｒ，Ｇ，Ｂの蛍光体の経時劣化特性に基づき演算により
補正信号を生成するようにした。In a third aspect based on the first or second aspect, the correction signal generating means calculates a correction signal by calculation based on the time integration value and the aging characteristics of the R, G, and B phosphors. Generated.
【０００８】第４の発明は、第１又は第２の発明におい
て、前記補正信号生成手段は、前記時間積分値に応じて
データテーブル化した前記Ｒ，Ｇ，Ｂの蛍光体の経時劣
化に基づき補正信号を生成するよう構成した。[0010] In a fourth aspect based on the first or second aspect, the correction signal generating means is based on the deterioration over time of the R, G, and B phosphors, which is made into a data table according to the time integration value. It is configured to generate a correction signal.
【０００９】第５の発明は、第２乃至第４のいずれかの
１の発明において、前記表示の時間積分値を得る手段
は、前記Ｒ，Ｇ，Ｂの表示率の積分時間値を得るように
した。In a fifth aspect based on any one of the second to fourth aspects, the means for obtaining the integrated time value of the display is such that the integrated time value of the display ratio of R, G, B is obtained. I made it.
【００１０】第６の発明は、第１乃至第５のいずれか１
の発明において、前記補正信号生成手段は、当初は大き
な補正量の補正信号を生成し時間積分値が大きくなるに
つれて小さな補正量の補正信号を生成するようにした。In a sixth aspect, the present invention provides any one of the first to fifth aspects.
In the invention, the correction signal generating means generates a correction signal having a large correction amount at first, and generates a correction signal having a small correction amount as the time integration value increases.
【００１１】第７の発明は、第６の発明において、前記
当初の大きな補正量の補正信号を、前記Ｒ，Ｇ，Ｂの蛍
光体のうちの最も劣化しやすい蛍光体の経時劣化特性に
基づき生成するようにした。In a seventh aspect based on the sixth aspect, the correction signal of the initial large correction amount is determined based on the aging characteristics of the phosphor which is most likely to deteriorate among the R, G, and B phosphors. Generated.
【００１２】[0012]
【発明の実施の形態】［第１の実施の形態］図１は本発
明の第１の実施の形態の表示装置のブロック図である。
１Ｒ，１Ｇ，１Ｂは色信号Ｒ，Ｇ，Ｂの表示率（0.0〜
1.0）、つまりレベルを検出する表示率監視部、２は色
信号Ｒ，Ｇ，Ｂの輝度レベルとそのバランスを調整する
白バランス調整部、３はＲ，Ｇ，Ｂの蛍光体を有するＰ
ＤＰ等の表示体である。４は全体を制御する制御部（Ｍ
ＰＵ）であり、表示率監視部１Ｒ，１Ｇ，１Ｂに定期的
に表示率を読みに行ったり、白バランス調整部２の白バ
ランスを定期的又は任意時刻に調整したりする他に、各
種の処理を行う。またこの制御部４には、時間信号を発
生するタイマ部５、時間積分値をカウントするカウンタ
部６、プログラムやデータ格納用等のメモリ部７が付随
している。８は操作部である。[First Embodiment] FIG. 1 is a block diagram of a display device according to a first embodiment of the present invention.
1R, 1G, and 1B are display ratios of the color signals R, G, and B (0.0 to
1.0), that is, a display ratio monitoring unit for detecting the level, a white balance adjusting unit for adjusting the luminance levels of the color signals R, G, and B and their balance, and a P having phosphors of R, G, and B
It is a display such as DP. 4 is a control unit (M
PU), the display ratio monitoring units 1R, 1G, and 1B regularly read the display ratio, adjust the white balance of the white balance adjustment unit 2 periodically or at an arbitrary time, and perform various other operations. Perform processing. Further, the control unit 4 includes a timer unit 5 for generating a time signal, a counter unit 6 for counting a time integration value, and a memory unit 7 for storing programs and data. Reference numeral 8 denotes an operation unit.
【００１３】ここでは、制御部４において、表示率監視
部１Ｒ，１Ｇ，１Ｂで得られる表示率を定期的に取り込
み、表示率時間積分値Σｒ，Σｇ，Σｂを得てメモリ部
７に格納し、その内容は定期的に更新する。そして、表
示体３のＲ，Ｇ，Ｂの蛍光体についてその経時劣化特性
Ｈｒ，Ｈｇ，Ｈｂを予め求めておいて、その経時劣化特
性Ｈｒ，Ｈｇ，Ｈｂと表示率時間積分値Σｒ，Σｇ，Σ
ｂから、輝度と色温度が所定値となる色信号Ｒ，Ｇ，Ｂ
レベルの補正値を求め、これを白バランス調整部２に入
力して色信号Ｒ，Ｇ，Ｂのレベルを補正し、輝度と色温
度（白バランス）が所定値となるように制御する。Here, the control unit 4 periodically captures the display rates obtained by the display rate monitoring units 1R, 1G, 1B, obtains the display rate time integrated values Σr, Σg, Σb and stores them in the memory unit 7. , Its contents are updated regularly. The aging characteristics Hr, Hg, and Hb of the R, G, and B phosphors of the display body 3 are determined in advance, and the aging characteristics Hr, Hg, and Hb are combined with the display rate time integration values Σr, Σg, Σ
b, the color signals R, G, and B at which the luminance and the color temperature have predetermined values.
A correction value of the level is obtained, and the correction value is input to the white balance adjustment unit 2 to correct the levels of the color signals R, G, and B so that the luminance and the color temperature (white balance) are controlled to predetermined values.
【００１４】この所定の輝度と色温度（白バランス）を
実現するための補正値を得る手法は、表示体３のＲ，
Ｇ，Ｂの蛍光体の経時劣化特性が線形特性である場合
は、Ｒ，Ｇ，Ｂの表示率時間積算値Σｒ，Σｇ，Σｂと
各々の経時劣化特性Ｈｒ，Ｈｇ，Ｈｂから補正式 Ａｒ＝ｆ（Σｒ，Ｈｒ） Ａｇ＝ｆ（Σｇ，Ｈｇ） Ａｂ＝ｆ（Σｂ，Ｈｂ） を作成し、これを演算することで色信号Ｒ，Ｇ，Ｂの補
正値Ａｒ，Ａｇ，Ａｂを得ることができる。The method of obtaining a correction value for realizing the predetermined luminance and color temperature (white balance) is based on the R, R,
When the aging deterioration characteristics of the G and B phosphors are linear characteristics, the correction formula Ar = from the display rate time integration values 積 算 r, Σg and Σb of R, G and B and the respective aging deterioration characteristics Hr, Hg and Hb. f (Σr, Hr) Ag = f (Σg, Hg) Ab = f (Σb, Hb) is calculated and the correction values Ar, Ag, Ab of the color signals R, G, B are obtained. Can be.
【００１５】しかし、非線形特性の場合は、表示率時間
積分値Σｒの各値に対応する色信号Ｒ補正値Ａｒ，表示
率時間積分値Σｇの各値に対応する色信号Ｒ補正値Ａ
ｇ、表示率時間積分値Σｂの各値に対応する色信号Ｒ補
正値Ａｂを実験等により予めデータテーブルとして作成
しておいて、各表示率時間積分値に応じてＬＵＴ方式に
より読み出すようにする。However, in the case of the non-linear characteristic, the color signal R correction value Ar corresponding to each value of the display rate time integration value Δr and the color signal R correction value A corresponding to each value of the display rate time integration value Δg
g, a color signal R correction value Ab corresponding to each value of the display rate time integral value Σb is prepared in advance as a data table by an experiment or the like, and is read out by the LUT method according to each display rate time integral value. .
【００１６】次に、線形制御できる場合の具体例を説明
する。この場合は、色信号Ｒ，Ｇ，Ｂについて、所定時
間（例えばほぼ寿命時間）使用したとき最も劣化する蛍
光体の当該劣化時の蛍光体輝度を基準として、Ｒ，Ｇ，
Ｂの各蛍光体の輝度と色温度が所定値となるように最初
から色信号Ｒ，Ｇ，Ｂに補正を加えておき、表示率時間
積分値の増大に応じてその補正量を弱めるように制御す
る。Next, a specific example in the case where linear control can be performed will be described. In this case, for the color signals R, G, and B, the R, G, and B signals are determined based on the luminance of the phosphor that degrades most when used for a predetermined time (for example, approximately the life time).
The color signals R, G, and B are corrected from the beginning so that the luminance and color temperature of each of the phosphors B become predetermined values, and the correction amount is reduced in accordance with an increase in the display ratio time integrated value. Control.
【００１７】図２はＲ，Ｇ，Ｂの蛍光体が線形性をもつ
場合の経時劣化特性図である。横軸は使用期間（表示率
を１とした表示率時間積分値）、縦軸は当該蛍光体が発
揮できるピーク輝度である。ピーク輝度は最大値（初期
のピーク輝度）を１００％とするよう正規化されてい
る。ここでは、１０年間につき一定の輝度と一定の色温
度を保持させる場合の補正について説明する。FIG. 2 is a graph showing deterioration over time when the R, G, and B phosphors have linearity. The abscissa represents the period of use (integration of the display rate with the display rate being 1), and the ordinate represents the peak luminance that the phosphor can exhibit. The peak luminance is normalized so that the maximum value (initial peak luminance) is 100%. Here, a description will be given of a correction in a case where a constant luminance and a constant color temperature are maintained for 10 years.
【００１８】図２に示すように、Ｒ蛍光体とＧ蛍光体は
同じ経時劣化特性を持っているが、Ｂ蛍光体はそれらよ
り劣化係数の大きな経時劣化特性をもっている。そこ
で、Ｂ蛍光体の特性を基準に補正を行う。まず、使用開
始時に、色信号Ｒ，Ｇ，Ｂの各信号レベルを最大値の６
０％に落とすことにより、Ｂ蛍光体の１０年後の劣化輝
度である６０％にまで、それらＲ，Ｇ，Ｂの各蛍光体の
ピーク輝度を落とす。なお、このとき、白バランスがと
られているものとする。As shown in FIG. 2, the R phosphor and the G phosphor have the same aging characteristics, while the B phosphor has a aging characteristic having a larger deterioration coefficient. Therefore, correction is performed based on the characteristics of the B phosphor. First, at the start of use, the signal levels of the color signals R, G, and B are set to the maximum value of six.
By reducing the luminance to 0%, the peak luminance of each of the R, G, and B phosphors is reduced to 60%, which is the deterioration luminance of the B phosphor after 10 years. At this time, it is assumed that the white balance is maintained.
【００１９】そして、ｘ年経過時の補正は次のようにす
る。Ｒ，Ｇの蛍光体の輝度の劣化は１年で２％であるの
でｘ年で２ｘ％となり、ｘ年の時点のピーク輝度は「１
００−２ｘ」％に低下する。また、Ｂの蛍光体の輝度の
劣化は１年で４％であるのでｘ年で４ｘ％となり、ｘ年
の時点のピーク輝度は「１００−４ｘ」％に低下する。
よって、補正に当たっては、ｘ年経過時でＲ，Ｇの信号
レベルＬｒ、Ｌｇ、Ｂの信号レベルＬｂを、 Ｌｒ＝Ｌｇ＝６０／（１００−２ｘ）％ Ｌｂ＝６０／（１００−４ｘ）％ に上げる補正を行う。The correction at the lapse of x years is as follows. Since the deterioration of the luminance of the R and G phosphors is 2% in one year, it becomes 2x% in x years, and the peak luminance in x years is “1”.
00-2x "%. In addition, since the deterioration of the luminance of the phosphor of B is 4% in one year, it becomes 4x% in x years, and the peak luminance at the time of x years decreases to "100-4x"%.
Therefore, in the correction, the signal levels Lr, Lg, and B of L, G, and B are changed to Lr = Lg = 60 / (100−2x)% Lb = 60 / (100−4x)% after x years have passed. Make the correction to increase.
【００２０】例えば、５年経過時では、 Ｌｒ＝Ｌｇ＝６０／（１００−１０）＝６０／９０＝６
６．７％ Ｌｂ＝６０／（１００−２０）＝６０／８０＝７５％ となる。この結果、Ｒ，Ｇ，Ｂの輝度ＢＬｒ、ＢＬｇ、
ＢＬｂは、 ＢＬｒ、ＢＬｇ＝６６．７％×９０％＝６０％ ＢＬｂ＝７５％×８０％＝６０％ となり、使用開始時の輝度と同じとなる。よって色温度
（白バランス）も同じとなる。For example, after 5 years, Lr = Lg = 60 / (100−10) = 60/90 = 6
6.7% Lb = 60 / (100-20) = 60/80 = 75%. As a result, R, G, and B luminances BLr, BLg,
BLb is BLr, BLg = 66.7% × 90% = 60% BLb = 75% × 80% = 60%, which is the same as the luminance at the start of use. Therefore, the color temperature (white balance) is the same.
【００２１】１０年経過時の補正については、 Ｌｒ＝Ｌｇ＝６０／８０＝７５％ Ｌｂ＝６０／６０＝１００％ に上げる。この結果、Ｒ，Ｇ，Ｂの輝度ＢＬｒ、ＢＬ
ｇ、ＢＬｂは、 ＢＬｒ、ＢＬｇ＝７５％×８０％＝６０％ ＢＬｂ＝１００％×６０％＝６０％ となり、使用開始時の輝度と同じとなる。As for the correction after 10 years, Lr = Lg = 60/80 = 75% Lb = 60/60 = 100% As a result, the luminances BLr, BL of R, G, B
g and BLb are as follows: BLr, BLg = 75% × 80% = 60% BLb = 100% × 60% = 60%, which is the same as the luminance at the start of use.
【００２２】このように、使用開始時に最も経年劣化の
大きな蛍光体の所定劣化輝度にＲ，Ｇ，Ｂの全部の輝度
を合わせておいて、表示率時間積分値の増大と経年劣化
特性に応じて定期的に色信号Ｒ，Ｇ，Ｂのレベルを上げ
る補正を行うことにより、Ｒ，Ｇ，Ｂの各蛍光体におい
て常に同じ輝度を得ることができ色温度も同じにするこ
とができる。As described above, when all the luminances of R, G, and B are matched with the predetermined deterioration luminance of the phosphor having the longest deterioration at the start of use, the display ratio time integral value is increased and the deterioration with the aging characteristic is determined. By performing the correction for periodically increasing the levels of the color signals R, G, and B, the same luminance can be always obtained in each of the R, G, and B phosphors, and the color temperature can be made the same.
【００２３】［第２の実施の形態］図３は本発明の第２
の実施の形態の表示装置のブロック図である。９は色調
整部であり、色差信号Ｒ−Ｙ、Ｂ−Ｙが入力し、そこで
色濃度と色合いが調整されるようになっている。１０は
マトリクス部であり、その色調整部９から出力した色差
信号Ｒ−Ｙ’、Ｂ−Ｙ’、および輝度信号Ｙにより色信
号Ｒ，Ｇ，Ｂを作成する。他は図１と同じである。[Second Embodiment] FIG. 3 shows a second embodiment of the present invention.
It is a block diagram of a display of an embodiment. Reference numeral 9 denotes a color adjustment unit to which color difference signals RY and BY are inputted, where color density and hue are adjusted. Reference numeral 10 denotes a matrix unit that creates color signals R, G, and B based on the color difference signals RY ′ and BY ′ and the luminance signal Y output from the color adjustment unit 9. Others are the same as FIG.
【００２４】本実施形態においても、表示率時間積分値
Σｒ，Σｇ，Σｂを得て、メモリ部８に格納し、その内
容は所定時間毎に更新する。そして、表示体４のＲ蛍光
体、Ｇ蛍光体、Ｂ蛍光体の各々についてその経時劣化特
性を予め求めておいて、前記得られた表示率時間積算値
Σｒ，Σｇ，Σｂと各蛍光体の経時劣化特性とにより、
Ｒ，Ｇ，Ｂの補正値Ａｒ、Ａｇ、Ａｂを得る。このＲ，
Ｇ，Ｂの補正値Ａｒ、Ａｇ、Ａｂの生成手法は、第１の
実施形態と同様に、補正式を利用した演算により或いは
データテーブルを使用したＬＵＴ方式による。そして、
得られたＲ，Ｇ，Ｂの補正値Ａｒ、Ａｇ、Ａｂから、特
定の肌色を表示できる色あいの補正値Ｃと色濃度の補正
値Ｄを例えば定期的自動的に生成してメモリ部８に保持
し、新たな補正値に更新されるまで、それらの補正値で
色調整部９を制御する。Also in the present embodiment, the display rate time integration values Σr, Σg, Σb are obtained and stored in the memory unit 8, and the contents are updated every predetermined time. The aging characteristics of each of the R, G, and B phosphors of the display 4 are determined in advance, and the obtained display ratio time integration values Σr, Σg, Σb and the respective phosphors are compared. Due to aging characteristics,
The correction values Ar, Ag, Ab of R, G, B are obtained. This R,
Similar to the first embodiment, the G and B correction values Ar, Ag, and Ab are generated by a calculation using a correction formula or by an LUT method using a data table. And
From the obtained R, G, B correction values Ar, Ag, Ab, a hue correction value C and a color density correction value D capable of displaying a specific skin color are automatically generated periodically, for example, and stored in the memory unit 8. The color adjustment unit 9 is held and controlled by the correction values until the color correction unit 9 is updated to a new correction value.
【００２５】色調整部９での色あい補正の実行は、前記
得られた色あい補正値Ｃに基づき、入力する色差信号Ｒ
−Ｙ、Ｂ−Ｙについて、（Ｒ−Ｙ）／（Ｂ−Ｙ）＝Ｋを
変化させる。このときＫを大きくすれば、シアンがかっ
た色あいとなり、小さくすれば黄色がかった色合いとな
る。また、色濃度の補正の実行は、前記得られた濃度補
正値Ｄに基づき、（Ｒ−Ｙ）／（Ｂ−Ｙ）の比率を一定
として（Ｒ−Ｙ）、（Ｂ−Ｙ）を変化させる。（Ｒ−
Ｙ）と（Ｂ−Ｙ）を大きくすれば色濃度は薄くなる。以
上により肌色を所定の色に制御できる。The execution of the hue correction in the color adjustment section 9 is based on the obtained hue correction value C and the input color difference signal R.
For (−Y) and (B−Y), (RY) / (B−Y) = K is changed. At this time, if K is increased, the color becomes cyanish, and if K is decreased, the color becomes yellowish. The correction of the color density is performed by changing (RY) and (BY) while keeping the ratio of (RY) / (BY) constant based on the obtained density correction value D. Let it. (R-
If (Y) and (BY) are increased, the color density is reduced. Thus, the skin color can be controlled to a predetermined color.
【００２６】［その他の実施形態］なお、前記の表示率
時間積分値は、表示装置の動作時間積分値（動作時間累
積値）とすることもできる。この場合は表示率を勘案し
ないので精度は低いが簡素なシステムとなる。また、補
正値の更新時期は上記したように定期的自動的に行う他
に、使用者が任意のタイミングで更新するようにしても
良い。[Other Embodiments] Note that the display rate time integral value may be an operation time integral value (operating time accumulated value) of the display device. In this case, since the display ratio is not taken into account, the accuracy is low, but the system is simple. In addition to the automatic update of the correction value as described above, the user may update the correction value at an arbitrary timing.
【００２７】[0027]
【発明の効果】以上から本発明によれば、個々の蛍光体
の異なった劣化により各色の輝度が低下することにより
肌色が変化したり色温度が変化するような場合でも、こ
れを補償することができる。As described above, according to the present invention, even if the skin color changes or the color temperature changes due to a decrease in the luminance of each color due to the different deterioration of the individual phosphors, this is compensated for. Can be.
【図１】 本発明の第１の実施形態の表示装置のブロッ
ク図である。FIG. 1 is a block diagram of a display device according to a first embodiment of the present invention.
【図２】 蛍光体の経年劣化特性図である。FIG. 2 is an aged deterioration characteristic diagram of a phosphor.
【図３】 本発明の第２の実施形態の表示装置のブロッ
ク図である。FIG. 3 is a block diagram of a display device according to a second embodiment of the present invention.
１Ｒ，１Ｇ，１Ｂ：表示率監視部、２：白バランス調整
部、３：表示体、４：制御部、５：タイマ部、６：カウ
ンタ部、７：メモリ部、８：操作部、９：色調整部、１
０：マトリクス部1R, 1G, 1B: display ratio monitoring section, 2: white balance adjustment section, 3: display body, 4: control section, 5: timer section, 6: counter section, 7: memory section, 8: operation section, 9: Color adjustment unit, 1
0: Matrix section
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０４Ｎ 9/64 Ｈ０４Ｎ 9/73 Ｂ 9/73 Ｇ０９Ｇ 3/28 Ｋ Ｎ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) H04N 9/64 H04N 9/73 B 9/73 G09G 3/28 K N
Claims (7)
の時間積分値を得る手段と、該時間積分値及び前記表示
体の予め得ておいたＲ，Ｇ，Ｂの蛍光体の経時劣化特性
に応じて輝度と色温度が所定値となる補正信号を生成す
る手段と、該補正信号により輝度と色温度を補正する手
段とを具備することを特徴とする表示装置。1. A means for obtaining a time integrated value of a display ratio on a display by color signals R, G, B, and a phosphor of R, G, B previously obtained for the time integrated value and the display. A display device comprising: means for generating a correction signal whose luminance and color temperature have predetermined values in accordance with the aging characteristics of the device; and means for correcting the luminance and color temperature by the correction signal.
時間積分値を得るする手段と、該時間積分値及び前記表
示体の予め得ておいたＲ，Ｇ，Ｂの蛍光体の経時劣化特
性に応じて肌色が所定値となる補正信号を生成する手段
と、該補正信号により色合いと色濃度を補正する手段と
を具備することを特徴とする表示装置。2. A means for obtaining a time integrated value of display on a display by color signals R, G, B, and a phosphor of R, G, B previously obtained on said time integrated value and said display. A display device comprising: means for generating a correction signal that causes a flesh color to have a predetermined value in accordance with the time-dependent deterioration characteristic of the color filter; and means for correcting hue and color density by the correction signal.
Ｇ，Ｂの蛍光体の経時劣化特性に基づき演算により補正
信号を生成することを特徴とする表示装置。3. The method according to claim 1, wherein the correction signal generating means includes a time integral value and the R,
A display device, wherein a correction signal is generated by calculation based on the aging deterioration characteristics of G and B phosphors.
タテーブル化した前記Ｒ，Ｇ，Ｂの蛍光体の経時劣化に
基づき補正信号を生成することを特徴とする表示装置。4. The correction signal generation means according to claim 1, wherein the correction signal generation means generates a correction signal based on the deterioration with time of the R, G, and B phosphors, which is made into a data table according to the time integration value. A display device characterized by the above-mentioned.
表示率の積分時間値を得ることを特徴とする表示装置。5. The display device according to claim 2, wherein the means for obtaining the time integration value of the display obtains the integration time value of the display ratio of R, G, and B. .
号を生成し時間積分値が大きくなるにつれて小さな補正
量の補正信号を生成することを特徴とする表示装置。6. The correction signal generating means according to claim 1, wherein the correction signal generating means generates a correction signal having a large correction amount at first, and generates a correction signal having a small correction amount as a time integration value increases. A display device, comprising:
の蛍光体のうちの最も劣化しやすい蛍光体の経時劣化特
性に基づき生成することを特徴とする表示装置。7. The system according to claim 6, wherein the correction signal of the initial large correction amount is transmitted to the R, G, B
A display device, wherein the display device is generated based on the aging deterioration characteristics of the phosphor which is most likely to deteriorate among the phosphors.
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| JP2000189691A JP2002006796A (en) | 2000-06-23 | 2000-06-23 | Display device |
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|---|---|---|---|
| JP2000189691A JP2002006796A (en) | 2000-06-23 | 2000-06-23 | Display device |
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