JPH1039791A - Organic electroluminescence display device - Google Patents

Organic electroluminescence display device

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Publication number
JPH1039791A
JPH1039791A JP19222496A JP19222496A JPH1039791A JP H1039791 A JPH1039791 A JP H1039791A JP 19222496 A JP19222496 A JP 19222496A JP 19222496 A JP19222496 A JP 19222496A JP H1039791 A JPH1039791 A JP H1039791A
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Prior art keywords
light emitting
color
emitting portion
blue
green
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JP19222496A
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Japanese (ja)
Inventor
Shuji Iwata
Hochi Nakamura
Takeshi Sato
Masaki Yamakawa
芳知 中村
佐藤  岳
正樹 山川
修司 岩田
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Idemitsu Kosan Co Ltd
Mitsubishi Electric Corp
三菱電機株式会社
出光興産株式会社
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/28Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
    • H01L27/32Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes [OLED]
    • H01L27/3206Multi-colour light emission
    • H01L27/3211Multi-colour light emission using RGB sub-pixels

Abstract

PROBLEM TO BE SOLVED: To provide an org. electroluminescence display device capable of maintaining luminance balance of red, blue and green without collapse over a long time.
SOLUTION: The luminance ratios of respective emitted colors are controlled by changing the area ratios of respective color light emitting parts R, B, G of the red, blue and green. The areas of the respective color light emitting parts are so controlled that the luminance of the respective color light emitting parts attains the luminance ratios respectively attaining desired white balance values when the same driving voltage is impressed on the respective color light emitting parts, full color are displayed by controlling the time width of the driving voltage to each of the respective color light emitting parts. The respective color light emitting parts are mosaically arranged to the shape of a square with a cross inside. Two pieces of the light emitting parts of any one color among the red, blue and green are arranged on one diagonal line of the shape of the square with the cross inside and the light emitting parts of the remaining two colors are arranged by one piece each on the other diagonal line of the shape of the square with the cross inside. Any of the light emitting parts is divided to plural pieces of the light emitting parts and non-light emitting parts are arranged in the central parts of the light emitting parts.
COPYRIGHT: (C)1998,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、有機エレクトロルミネッセンス素子(有機EL素子)を使用した有機エレクトロルミネッセンス表示装置(有機ELD)に関する。 The present invention relates to relates to an organic electroluminescent device the organic electroluminescent display device using the (organic EL device) (organic ELD).

【0002】 [0002]

【従来の技術】EL素子は、蛍光性化合物に電圧を加えることにより励起し、発光させる素子である。 BACKGROUND ART EL devices were excited by applying a voltage to the fluorescent compound is a device to emit light. ルミネッセンス材料により、無機化合物を使用した無機ELと有機化合物を使用した有機ELに分けられる。 The luminescent materials are divided into organic EL using an inorganic EL and an organic compound using an inorganic compound. 無機ELを使用したディスプレイ(無機ELD)は一部実用化され、有機ELを使用したディスプレイ(有機ELD)は実用化が試みられているところである。 Display using an inorganic EL (inorganic ELD) are partially commercialized, the display (organic ELD) using an organic EL is where practical use has been attempted.

【0003】中でも有機ELは、例えば特開平6−99 [0003] Among these organic EL, for example JP-A-6-99
53号公報や刊行物(信学技報、電子情報通信学会発行、OME94-80(1995-03),p13〜18「青色発光素子へのドーピング」出光興産 中村他)に記載されているような高輝度に発光する青色有機EL素子の発明により、カラー変換材料(例えば顔料や蛍光体)と呼ばれる材料を用いてエネルギーの高い青色から、エネルギーの低い緑色、赤色へ、変換する(波長を変換する)ことで、3原色を得ることができ、これら赤色、緑色、青色の画素を2次元配列することで、表示ディスプレイを構成し、画像を映し出すことができる。 53 JP and publications such as those described in (IEICE, IEICE issued, OME94-80 (1995-03), Idemitsu Kosan Nakamura et al., "Doping into blue light emitting element" P13~18) the invention of the blue organic EL device that emits high intensity, to convert the blue high energy by using a material called color conversion material (e.g., pigments and phosphors), low energy green to red, to convert the (wavelength ) it is, it is possible to obtain the three primary colors, these red, green, by two-dimensionally arranged blue pixel constitutes a display displaying an image can be displayed to. なお、カラー変換材料につては例えば特開平5−258860号公報に、波長変換によるカラー変換については例えば刊行物(ASIA DISPL Note that the color conversion material connexion in JP-A-5-258860 for example, such publications for color conversion by the wavelength conversion (ASIA displ
AY '95、Performance of RGB Multi-Color Organic EL AY '95, Performance of RGB Multi-Color Organic EL
DIsplay 出光興産)に記載されている。 It is described in the DIsplay Idemitsu Kosan Co., Ltd.).

【0004】以下、図をもとに上記青色有機EL素子を用いた従来の表示装置について説明する。 [0004] Hereinafter, a conventional display device will be described with reference to the blue organic EL element on the basis of FIG. 図8(a)は従来の有機ELDの表示面を示す表面図、(b)は(a)における線イの部分の断面図である。 8 (a) is a surface view showing a display surface of a conventional organic ELD, a cross-sectional view of a portion of the fibers in (b) is (a). 図において、1は表示面側透明基板、2r、2gはそれぞれ青色を赤色および緑色に波長変換する色変換フィルター、3 In the figure, the display surface side transparent substrate 1, 2r, color conversion filter 2g is for wavelength-converting the blue to red and green, respectively, 3
は保護層、4は透明電極(陽極)、5は発光層(有機E Protective layer, the transparent electrode 4 (anode), 5 light-emitting layer (organic E
L層)、6は背面電極(陰極)、7は背面基板、8はブラックマトリックスであり、R、G、Bはそれぞれ赤、 L layer), the back electrode 6 (cathode), the rear substrate 7, 8 is a black matrix, respectively R, G, B are the red,
緑、青色の各発光部を示している。 Green indicates the light-emitting portions of the blue. なお、図8(a)では明確のため各色発光部R、G、Bにそれぞれ異なるハッチングを施して示しており、以下の各図においても同様である。 Each color-emitting portion R for clarity in FIG. 8 (a), G, indicates subjected to different hatching respectively B, and the same in the following drawings. 構造を簡単に説明すると、まず表示側透明基板1上にブラックマトリックス8が形成され、色変換フィルター2r、2gがストライプ状に形成され、その色変換フィルター2r、2gの凹凸を緩和するため透明の材料でつくられる保護層3が形成され、次に色変換フィルター2r、2gのストライプ上に重なるように同じくストライプ状に陽極4(ITOなどの透明電極)が形成される。 Structurally briefly described, is first formed a black matrix 8 on the display side transparent substrate 1, a color conversion filter 2r, 2g are formed in stripes, the color conversion filter 2r, to mitigate the unevenness of 2g transparent protective layer 3 which is made of material is formed, then the color conversion filter 2r, the anode 4 to the same stripe shape so as to overlap on 2g of the stripe (transparent electrode such as ITO) is formed. この上に一面に蒸着やスピンコーティングなどで発光層5(単層もしくは多層)が成膜され、陽極4に直交するようにストライプ状に背面電極6(陰極)があり、この背面電極6の上に背面基板7が順に張り合わされる。 This on the light emitting layer 5 at a deposition or spin coating on one side (single layer or multi-layer) is deposited, there is a back electrode 6 (cathode) in a stripe shape so as to be perpendicular to the anode 4, on the back electrode 6 the rear substrate 7 is attached to each other in order to. なお、ここで、発光層5は、通常1種または複数種の有機発光材料により構成されるが、有機発光材料と正孔輸送材料、電子注入材料が単体もしくは混合物により形成される。 In this case, the light emitting layer 5 is usually composed of one or more organic light-emitting material, an organic light-emitting material and a hole transporting material, electron injecting material is formed of a simple substance or a mixture.

【0005】 [0005]

【発明が解決しようとする課題】上記のような構成による有機EL表示装置では、発光層5で放出される青色発光と青色発光光を色変換フィルター2g、2rで波長変換した緑色、赤色を用いるために、赤色と緑色の輝度が低下し、視覚特性を含めた赤色、緑色、青色の発光効率の比が、例えば上記刊行物(ASIA DISPLAY '95、Perfo In organic EL display apparatus according to the above-described configuration INVENTION SUMMARY is], we used a blue light emission and a color conversion filter 2g blue emission light emitted by the light emitting layer 5, the green wavelength-converted by 2r, the red for, reduced red and green luminance, red, including visual characteristics, green, the ratio of blue light emission efficiency, for example, the publication (ASIA DISPLAY '95, Perfo
rmance of RGB Multi-Color Organic EL DIsplay 出光興産)によると、赤:緑:青=0.3:1.2:1になることが記載されている。 According to the rmance of RGB Multi-Color Organic EL DIsplay Idemitsu Kosan Co., Ltd.), red: green: blue = 0.3: 1.2: it has been described that become 1. このため、この構成の有機ELディスプレイは、赤色、緑色、青色を同一面積、同電圧で光らせた場合、赤色が一番弱く、ホワイトバランスの崩れた青っぽい白色となり、綺麗なフルカラー表示がなされない。 Therefore, the organic EL display of this structure, red, green, the same area of ​​the blue, when lighted at the same voltage, weak red top becomes a bluish white collapsed white balance, clean full-color display is not performed. CIE標準座標上で目標座標点の白色を得るため、輝度のバランスをとる必要がある。 To obtain a white target coordinate point on the CIE standard coordinate, it is necessary to balance the luminance. そこで、赤、 So, red,
緑、青各色発光部の面積が同一である時、輝度のバランスをとる1つの方法として、赤、緑、青各色発光部にそれぞれ異なる電圧を加える方法で輝度を調節する事が考えられる。 Green, when the area size of the blue colors emitting portion are identical, as a way to balance the luminance, red, green, it is conceivable to adjust the luminance in a manner applying different voltages to blue colors emitting portion. しかし有機EL素子は、発光寿命が注入電流量に大きく依存しているためにこの方法であると赤色、 However the organic EL element, if it is this way to emission lifetime is largely dependent on the amount of injection current red,
緑色、青色の注入電流量が色により異なり、すなわち色により輝度の劣化の速さが違うために、時間とともにホワイトバランスが崩れてくる。 Green, unlike the color injection current amount of blue, i.e., to the speed of deterioration of the brightness is different by color, coming collapses white balance over time.

【0006】本発明は、赤、緑、青各色の輝度バランスが長時間崩れないで維持できるような有機ELDを提供することを目的とする。 [0006] The present invention, an object of the present invention is to provide red, green, organic ELD, such as can be maintained in brightness balance of blue each color is not broken for a long time.

【0007】 [0007]

【課題を解決するための手段】本発明に係る有機エレクトロルミネッセンス表示装置は、赤、青、緑色の各色発光部の面積比を変えることにより上記各発光色の輝度比を制御したものである。 The organic electroluminescent display device according to the present invention SUMMARY OF THE INVENTION is obtained by controlling the luminance ratio of each emission color by varying red, blue, green the area ratio of each color light emitting portion.

【0008】また、上記各色発光部にそれぞれ同一の駆動電圧を印加したときに各色発光部の輝度がそれぞれ所望のホワイトバランス値をとる輝度比になるように上記各色発光部の面積を制御し、上記駆動電圧の時間幅を各色発光部毎に制御することによりフルカラーを表示するように構成したものである。 Further, by controlling the area of ​​each color light emitting portion so that the luminance ratio to take the desired white balance value brightness of each color light emitting portions respectively when the same drive voltage is applied respectively to each color light emitting portion, it is obtained by configured to display full color by controlling for each color light emitting unit time width of the drive voltage.

【0009】また、上記各色発光部が田の字状にモザイク配列され、赤色、青色、および緑色のうちの何れか1 Further, the respective color light-emitting portion is a mosaic arranged in a shape of fields, red, blue, and green one of 1
色の発光部が上記田の字の一方の対角線上に2個、残る2色の発光部が上記田の字の他方の対角線上に1個ずつ配置されているものである。 Two on the light emitting portion of the color on one of the diagonal lines of characters of the field, the light emitting portion of the two colors remaining are those that are placed one by one on the other diagonal line of characters of the field.

【0010】また、上記何れかの発光部が複数個の発光部分に分割されているものである。 [0010] in which any one of the light emitting portion is divided into a plurality of light emitting portions.

【0011】また、上記何れかの発光部の中央部に非発光部を配置したものである。 [0011] is obtained by arranging the non-light emitting portion in the central portion of the one of the light emitting portion.

【0012】また、上記各色発光部がストライプ状にトリオ配列され、面積が最小の発光部が中央に配置されているものである。 Further, the respective color light-emitting portion is trio arranged in stripes, in which the minimum of the light emitting portion area is located in the center.

【0013】また、上記何れかの発光部に色吸収型フィルターを備えたものである。 Further, those having a color absorption filter to the one of the light emitting portion.

【0014】 [0014]

【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION

実施の形態1. The first embodiment. 本発明の有機エレクトロルミネッセンス表示装置は、発光効率と白色表示の目標座標点から、 The organic electroluminescent display device of the present invention, from the target coordinate point of the light-emitting efficiency and white display,
赤、緑、青各色発光部(画素を構成する)の面積を決定することで輝度のバランスをとる。 Red, green, balance brightness by determining the area size of the blue colors emitting portion (constituting the pixel). この面積比を決定するには、まず、赤色、緑色、青色の各色度座標点から、 To determine this area ratio, first, red, green, from the chromaticity coordinate point of blue,
輝度比を計算する。 Calculating a luminance ratio. 白色表示の目標色度座標点を(x w 、y w )、表示面で観測される赤色、緑色、青色の各色度座標点をそれぞれ(x r 、y r )、(x g 、y g )、 The target chromaticity coordinate point of the white display (x w, y w), red observed in the display surface, green, blue each chromaticity coordinate points each (x r, y r), (x g, y g) ,
(x b 、y b )、表示面での赤色、緑色、青色の輝度比をP r :P g :1とすると、P r 、P gは次式(1)(2)で表される。 (X b, y b), the red on the display surface, green, blue luminance ratio P r: P g: When 1 to, P r, P g is represented by the following formula (1) (2).

【0015】 [0015]

【数1】 [Number 1]

【0016】この輝度比から、赤色、緑色、青色の発光効率の比をR:G:1とすると、各色発光部の面積比 [0016] From this brightness ratio of red, green, the ratio of the blue light emission efficiency R: G: When 1, the area ratio of each color light emitting portion
r :S g :S bは以下の式で表される。 S r: S g: S b is expressed by the following equation. r :S g :S b =P r /R:P g /G:1/1 これにより求められた面積比で各色発光部を形成することで、それぞれの色に対して電圧値を変えることなく、 S r: S g: S b = P r / R: P g / G: 1/1 by forming each color light emitting unit in this way the obtained area ratio, varying the voltage value for each color without,
白色の目標色度座標点を得る有機エレクトロルミネッセンス表示装置が提供される。 The organic electroluminescence display device is provided for obtaining a target chromaticity coordinate point of white. 例えば、輝度比を赤色:緑色:青色=2:7:1(CRTにおいてはこの輝度比が採用されることが多い)にする場合で、各色発光部の発光効率が従来例と同様に赤色:緑色:青色=0.3:1.2:1である場合、それぞれの発光部の面積比は赤色:緑色:青色 For example, red luminance ratio: Green: Blue = 2: 7: 1 in the case of the (often this luminance ratio is employed in CRT), light emitting efficiency of each color light emitting portion is conventional similarly to red: green: blue = 0.3: 1.2: If it is 1, the area ratio of the respective light emitting portion red: green: blue
=2/0.3:7/1.2:1/1=6.67:5.83:1になる。 = 2 / 0.3: 7 / 1.2: 1/1 = 6.67: 5.83: 1.

【0017】以下、本実施の形態による有機ELDをさらに詳細に説明する。 [0017] Hereinafter, a more detailed description of the organic ELD according to this embodiment. 図1は本発明の一実施の形態による有機ELDの要部を示し、(a)は表示面の平面図、 Figure 1 shows an essential part of an organic ELD according to an embodiment of the present invention, (a) is a plan view of the display surface,
(b)は(a)における線イの部分の断面図である。 (B) is a sectional view of a portion of the fibers in (a). 図において、1、は表示面側透明基板、2r、2gはそれぞれ青色を赤色および緑色に波長変換する色変換フィルター、3は保護層、4は透明電極(陽極)、5は発光層(有機EL層)、6は背面電極(陰極)、7は背面基板、8はブラックマトリックスであり、従来例と同様のものである。 In FIG, 1, the display surface side transparent substrate, 2r, 2 g color conversion filter for converting the wavelength of blue to red and green, respectively, the protective layer 3, the transparent electrode 4 (anode), 5 light-emitting layer (organic EL layer), the back electrode 6 (cathode) 7 rear substrate, 8 is a black matrix, is similar to the conventional example. R、G、Bはそれぞれ赤、緑、青色発光部を示している。 R, G, and B of red, green, shows a blue light emitting unit. 赤、緑、青の各色発光部R、G、B面積を所望の白色色度座標点になるように定める。 Red, green, each color light emitting portions R of blue, G, defining the B area so that the desired white chromaticity coordinate point. 即ち、上述したように赤色、緑色、青色発光部R、G、Bの発光効率が0.3:1.2:1であり、上述の通常のCRTの場合、赤色、緑色、青色の輝度比が2:7:1で白色色度座標点が決まるとして、赤、緑、青各色発光部R、G、B That is, the red, as described above, green, blue light emitting unit R, G, luminous efficiency of B is 0.3: 1.2: 1, in the case of the above-mentioned conventional CRT, the red, green, and blue luminance ratio 2: 7 : as a white chromaticity coordinate point is determined by 1, red, green, and blue colors emitting portions R, G, B
の面積比は6.67:5.83:1となるように構成される。 Area ratio of 6.67: 5.83: 1 and comprising thus constituted. このように、各色発光部の発光効率に基づき各色発光部R、G、Bの大きさを発光色によって変えることにより輝度比を制御して、各色発光部を同一の駆動電圧で駆動して所望の白色色度座標を得ることができる。 Desired Thus, each color light emitting portions R on the basis of the luminous efficiency of each color light emitting portion, G, the size of B by controlling the luminance ratio by changing the emission color by driving the respective color light-emitting portions at the same driving voltage it can be obtained of the white chromaticity coordinates.

【0018】次に製造方法について説明する。 [0018] Next, the manufacturing method will be described. 例えばガラス板、石英ガラスなどからなる表示面側透明基板1上に、ブラックマトリックス8を印刷法などにより形成し、青色から緑色、赤色に波長変換する色変換フィルター2g、2rを顔料分散法もしくは印刷法などで形成し、その上に透明材料である例えばポリウレタン樹脂や石英ガラスからなる保護層3を色変換フィルター2g、 For example, a glass plate, on the display surface side transparent substrate 1 made of quartz glass, a black matrix 8 is formed by a printing method, a color conversion filter 2g for wavelength conversion from blue green to red, 2r the pigment dispersion method or printing law is formed in such a color conversion filter 2g protective layer 3 made of a transparent material on which for example a polyurethane resin or quartz glass that,
2rの凹凸が緩和されるように積層する。 Unevenness of 2r are stacked so as to alleviate. なお、色変換フィルター2g、2rとしては、青色光を吸収してより長波長の可視光を発光することが知られている有機および無機化合物の中から選択することができ、赤色変換フィルター2rとしては、蛍光性の4−ジシアノメチレン−4H−ピランおよび4−ジシアノメチレン−4H−チオピラン等が用いられ、緑色変換フィルター2gとしては米国特許第4769292号明細書に開示されている緑色発光性ポリメチン系色素の何れかを含有したものが用いられる。 The color conversion filter 2g, as is 2r, can be selected from organic and inorganic compounds are known to emit longer wavelength visible light by absorbing blue light, as a red conversion filter 2r the fluorescent 4-dicyanomethylene -4H- pyran and 4-dicyanomethylene -4H- thiopyran and the like are used, green-emitting polymethine as the green conversion filter 2g disclosed in U.S. Patent No. 4,769,292 those containing any of dye is used. 具体的には例えば上述の特開平5−258 Specifically, for example, the aforementioned JP-A-5-258
860号公報に記載されているようなものが用いられる。 Such as those described in 860 JP is used. 次に色変換フィルター2g、2rの形状に重なるように位置合わせされた陽極電極4を形成する。 Then to form the color conversion filter 2g, anode electrode 4 that is aligned so as to overlap the shape of 2r. この陽極電極4として用いる導電体は、ITO(イソジウムチンオキサイド)などの透明電極である。 Conductor used as the anode electrode 4 is a transparent electrode such as ITO (iso indium tin oxide). これら電極4や保護層3は、数十nm〜数百μmの厚さで構成されている。 These electrodes 4 and the protective layer 3 is composed of tens nm~ several hundred μm thickness.
次に、透明電極4の上に配置する発光層5は、バイポーラ性(電子、ホールとも輸送する性質)を有する有機単層部、または電子輸送層、発光層、ホール輸送層の性質を持つ層が1層もしくは2層以上ある有機多層部で形成される。 Next, the light emitting layer 5 disposed on the transparent electrode 4, the organic single-layer portion having a bipolar property (electron, property of transporting both holes), or an electron transport layer, light emitting layer, a layer having the properties of hole transport layer there are formed in the organic multilayer unit with more than one layer or two layers. これらの形成方法は、有機EL材料が低分子か高分子の材料であるかによって異なるが、真空加熱蒸着やディップコーティングやスピンコーティングなどによって形成される。 These forming methods, an organic EL material differs depending on whether the material of the low-molecular or polymer, is formed by vacuum heating deposition or dip coating or spin coating. なお、発光層5としては具体的には例えば、上述の信学技報に出光興産により発表された一般式(1)で表される固体状態で青色発光能を有するジスチリルビフェニル誘導体をホスト物質として、このホスト物質に発光効率の向上のために一般式(2)で示されるジスチリルアリーレン(DSA)の末端にカルバゾリル基を保有するDSA誘導体である青色色素をドーピングした発光層5が挙げられる。 Incidentally, in particular as the light emitting layer 5, for example, distyrylbiphenyl derivative host material having a blue emission ability in the solid state represented by the general formula (1) published by Idemitsu Kosan in IEICE above as a light-emitting layer 5 doped with a blue dye is the DSA derivatives carrying ends carbazolyl groups of the general formula distyryl arylene represented by (2) (DSA) and the like to improve the luminous efficiency to the host material .

【0019】 [0019]

【化1】 [Formula 1]

【0020】有機EL材料による発光層5の次は、陰極となる低仕事関数の金属電極6が例えば蒸着法やスパッタなどの方法で形成される。 The following light-emitting layer 5 of an organic EL material is formed by a method such as metal electrodes 6 of the low work function as the cathode such as vapor deposition or sputtering. 最後に、背面基板7が張り合わされて、密封される。 Finally, is the rear substrate 7 is bonded together, are sealed. なお、このような構造である有機EL素子の作製方法は特に制限されるものではなく、成膜は蒸着法のみによっても作製可能であるし、作製する順番についても背面側からでも可能である。 Note that the method for manufacturing such a structure in which the organic EL device is not particularly limited, film formation is to be produced by only deposition, it is possible from the rear side of the order of manufacturing. 以上のように、マトリクス状に陽極電極4と陰極電極6を配置し、そのマトリックス電極を操作し順次映像信号を入力することにより、順次発光させ、映像を写し出す。 As described above, the anode electrode 4 and cathode electrode 6 arranged in a matrix, by inputting a sequential video signal by operating the matrix electrodes, are sequentially emitting, Projects video.

【0021】このように、各色発光部の面積比を調節することにより輝度比を調節するので、発光部の注入電流密度を各色とも等しくでき、輝度劣化特性に偏りがないので、時間と共に生じる輝度ばらつきが生じない。 [0021] Thus, since adjusting the luminance ratio by adjusting the area ratio of each color light emitting portion, the injection current density of the light emitting portion can equal each color, because there is no bias in brightness deterioration characteristics, resulting with time intensity variation does not occur. すなわち、色バランスのずれによる商品の短命化を防ぐことになる。 That is, to prevent shortening of the product due to the deviation of color balance. また、駆動電圧が一定であることは、駆動回路、駆動電源も簡略化できる。 It drive voltage is constant, the driving circuit, the driving power can be simplified. なお、発光は透明電極4 The emission transparent electrode 4
と背面電極6の交点部で起こるので、各色発光部の面積比を変えるには、透明電極4と背面電極6のいずれの電極比を変えてもよい。 And so it occurs at the intersection portion of the back electrode 6, to change the area ratio of each color light emitting unit may change the transparent electrode 4 one electrode ratio of the back electrode 6.

【0022】上記有機ELDにおいて、ある任意の色を表示したい場合は、赤色、緑色、青色を表示する各色発光部に同一電圧を印加し、その赤色、緑色、青色の印加時間幅を制御することで、それぞれの色が加色混合されて任意の色を表示する。 [0022] In the organic ELD, if you want to display an arbitrary color, red, green, the same voltage is applied to the respective color light-emitting unit for displaying blue, to control the red, green, blue application time width in each color is additive color mixing display an arbitrary color. この印加時間幅の階調数を増やすことで、美しいフルカラー表示が可能となる。 By increasing the number of gradations of the application time width, it is possible to beautiful full-color display.

【0023】実施の形態2. [0023] Embodiment 2. 上記実施の形態1では各色発光部R、G、Bをストライプ状にトリオ配列するのに、面積が最小で細い線となる青色発光部Bを端に配置したが、図2に示すように面積が最小の青色発光部Bを中央に配置することにより、両端の発光色を同時に発光させる場合に発光色間の距離が近くなり、すなわち光の濃淡のピッチが小さくなるために画像のぎらつき感を少なくすることができる。 Each color-emitting unit in Embodiment 1 above R, G, to be trio sequence of B in stripes, was placed a blue light emitting unit B which area is a narrow line at the minimum to the edge area as shown in FIG. 2 by but placing the minimum of the blue light-emitting part B in the center, the distance between the light emitting color is close to the case of simultaneously emitting the emission colors at both ends, i.e., glare of images for the pitch of the light shading is reduced it can be reduced.

【0024】実施の形態3. [0024] Embodiment 3. 図3は本発明の他の実施の形態による有機ELDの要部を示し、(a)は表示面の平面図、(b)は透明電極4および背面電極6の構成を説明する説明図である。 Figure 3 shows an essential part of an organic ELD according to another embodiment of the present invention, are (a) is a plan view of the display surface, (b) is an explanatory view for explaining the structure of the transparent electrode 4 and the back electrode 6 . 明確のため一方の電極6にはハッチングを施して示している。 It is shown hatched to one electrode 6 for clarity. 3色の発光部R、G、B 3-color light emitting portion R, G, B
を2列に並べ1列は赤色1色、残り1列は緑色と青色の2色で構成している。 One column arranged in two columns red one color, one row rest is composed of two colors of green and blue. ここでの面積比は、実施の形態1 Area ratio here is the embodiment 1
と同様の白色色度座標を得ることができるサイズである。 It is a size that can obtain the same white chromaticity coordinates. すなわち赤、緑、青各色発光部R、G、Bの面積比は6.67:5.83:1である。 Red, green, and blue colors emitting portions R, G, the area ratio of B 6.67: 5.83: 1. 例えば、図3(a)に示した発光部構成の場合、赤色Rを光らせるには、図3(b) For example, in the case of the light emitting portion structure shown in FIG. 3 (a), the shine red R, FIG. 3 (b)
に示すように走査電極Y1(a)、Y1(b)と信号電極X1(a)がo As shown in the scanning electrode Y1 (a), Y1 (b) the signal electrode X1 (a) is o
nになり、緑色Gを光らせるにはY1(a)とX1(b)がONになり、青色Bを光らせるにはY1(b)とX1(b)がONになる。 Becomes n, to illuminate the green G and Y1 (a) X1 (b) is turned ON, Y1 (b) and X1 (b) is turned ON to illuminate the blue B. なお、この図では透明電極4が信号電極、背面電極6が走査電極である場合を示したが逆であってもよい。 The transparent electrode 4 is a signal electrode in this figure, the back electrode 6 is illustrates the case where a scanning electrode may be reversed.

【0025】この配列にすることにより、各発光部の形状が正方形に近づくので、そのライン幅のサイズを大きくとれる。 [0025] With this arrangement, since the shape of each light-emitting section is closer to a square, made larger the size of the line width. たとえば、同じ画素ピッチの場合、ストライプ状にトリオ配列された縦3ラインの各発光部が50μm For example, if the same pixel pitch, the light-emitting portions of the three vertical lines which are trio arranged in stripes 50μm
幅であれば、この方式では、1.5倍の75μm幅にする事ができる。 If the width, in this method, can be 1.5 times of 75μm width. これにより、色変換フィルターや後に詳述するカラーフィルターのライン幅が広がるために、印刷などによる作製精度を容易な精度にすることができる。 Thus, for the line width of the color filter to be described color conversion filters and subsequent spread, the manufacturing precision printing due can facilitate accuracy. また、上記実施の形態1と同様に、輝度劣化の均一性と回路の簡単化の効果をもつ。 Also, as in the first embodiment, it has the effect of simplifying the uniformity and the circuit of the luminance degradation.

【0026】実施の形態4. [0026] Embodiment 4. 図4は本発明の他の実施の形態による有機ELDの要部を示し、(a)は表示面の平面図、(b)は(a)における実線で囲んだ部分を拡大した平面図である。 Figure 4 shows an essential part of an organic ELD according to another embodiment of the present invention, is a plan view enlarging a portion surrounded by a solid line in (a) a plan view of the display surface, the (b) is (a) . 各色発光部R、G、Bが田の字状にモザイク配列され、1色の発光部Gが田の字の一方の対角線上に2個、残る2色の発光部R、Bが田の字の他方の対角線上に1個ずつ配置されている。 Each color-emitting portions R, G, B is a mosaic arranged in a shape of fields, two, two-color light emitting portion R remains, B is field-shape in one color of the light emitting portion G is on one diagonal line of characters of the field one by one on the other diagonal line are disposed. なお、これらの発光部の面積は、実施の形態1と同様の面積比すなわち赤色:緑色:青色=6.67:5.83:1で構成されていてもよいが、図4では緑色発光部Gの面積を一番大きくしている。 Incidentally, the area of ​​the light-emitting portion, a similar area ratio or red in the first embodiment: Green: Blue = 6.67: 5.83: 1 may be constituted by, but the area of ​​the green light-emitting portion G in FIG. 4 most are large. こうすることによりホワイトバランスは多少崩れるが、人間の視覚特性を考慮した発光輝度が上がるという効果がある。 White balance somewhat disturbed by doing so, there is an effect that the light emission luminance in consideration of human visual characteristics is increased. また、この構造の場合、静止画において赤、緑、緑、青色を1画素(実線囲み部分)とすると、隣接画素が重複し(波線囲み部分)、実質的画素数は約2倍に増加する。 Also, in this structure, red in the still image, green, green, when the blue one pixel (solid line part enclosed), adjacent pixels overlap (dashed line enclosing portion), a substantially number of pixels is increased to about two times . すなわち、モザイク配列は、高画質を得る上で実施の形態1に記載したようなトリオ配列の画素形状よりも有利である。 In other words, the mosaic arrangement is advantageous than the pixel shape of the trio sequences as described in the first embodiment in obtaining high image quality. さらに、図4(b)に示すように、適切な拡大率で発光部ごとに矢印の方向に発光面積を拡大することも可能であり、画質を劣化することなく高輝度を得ることができる。 Furthermore, as shown in FIG. 4 (b), it is also possible to increase the light emitting area in the direction of the arrow for each light-emitting portion at an appropriate magnification, it is possible to obtain a high brightness without deteriorating the picture quality. また、この形状の場合も上記各実施の形態と同様に、製造の容易さと輝度劣化の均一性と回路の簡単化の効果をもつ。 Similar to the embodiment also above embodiments the case of this shape has the effect of simplifying the uniformity and circuit ease and luminance degradation of production.

【0027】実施の形態5. [0027] Embodiment 5. 図5は本発明の他の実施の形態による有機ELDの要部を示し、(a)は表示面の平面図、(b)(c)はそれぞれ(a)における実線で囲んだ部分を拡大した平面図、(d)は透明電極および背面電極の構成を説明する説明図である。 Figure 5 shows the main part of the organic ELD according to another embodiment of the present invention, an enlarged (a) is a plan view of the display surface, a portion surrounded by a solid line in (b) (c), respectively (a) plan view, (d) are explanatory views for explaining the structure of the transparent electrode and the back electrode. 明確のため一方の電極にはハッチングを施して示している。 And hatched to one of the electrodes for clarity. 同じサイズである発光部のモザイク配列を実現するために、1つの発光部の中でさらに区切って面積比を合わせた構造である。 To realize the mosaic arrangement of the light emitting portion of the same size, which is further separated by the combined area ratio structures in a single light emitting portion. 図5(b)は緑および青色発光部G、Bを複数個の発光部分に分割した(1カラー画素を小さい四角で区切った)形状、図5(c)は緑および青色発光部G、B 5 (b) is (separated one color pixel with a small square) were divided green and blue light emitting unit G, and B into a plurality of light emitting portions form, FIG. 5 (c) green and blue light emitting unit G, B
の中央部に非発光部を配置した(1カラー画素の中を抜いた)形状であり、どちらも目標座標点を得るための面積比(例えば実施の形態1と同様に赤色:緑色:青色= The (unplugged through the first color pixel) of arranging the non-light emitting portion in the central portion is shaped, both the area ratio for obtaining the target coordinate point (e.g., as in the first embodiment Red: Green: Blue =
6.67:5.83:1)となっている。 6.67: 5.83: 1) it has become. 上記各実施の形態で示したような、赤、緑、青各色発光部の面積比が1:1: As shown in the above embodiments, the red, green, and area ratio of the blue colors emitting portion 1: 1:
1でない形状の時、近距離で見た場合に画像がざらついて感じられる。 When not one shape, feel grainy images when viewed at close range. そこで、この実施の形態で示した形状にすることで、面積比のアンバランス(例えば赤色:緑色:青色=6.67:5.83:1)を緩和でき、ざらつき感を緩和できる。 Therefore, by the shape shown in this embodiment, the unbalance of the area ratio (for example, red: green: blue = 6.67: 5.83: 1) can be relaxed, can alleviate graininess. ここで図5(b)、(c)で用いられる透明電極4と背面電極6は図5(d)の様に構成され、 Here FIG. 5 (b), the back electrode 6 and the transparent electrode 4 to be used in (c) is constructed as in FIG. 5 (d),
(b)、(c)で描かれたそれぞれの小さな発光部分は透明電極4と背面電極6の交点上の点線の中に配置され、(b)の小さな発光部分の間や(c)の発光部の中央部の非発光部は黒色の材料(ブラックマトリックス) (B), emission of each small light emitting portion depicted in (c) is located within the dotted lines on the intersection of the back electrode 6 and the transparent electrode 4, (b) between the small light-emitting portion and (c) non-light emitting portion in the central portion of the parts are black material (black matrix)
で構成される。 In constructed. 例えば、図5(b)(c)に示した発光部構成の場合、赤色Rを光らせるには、図5(d)に示すように走査電極Y1(b)と信号電極X1(a)がonになり、緑色Gを光らせるにはY1(a)とX1(a)、およびY1(b)とX1(b) For example, in the case of the light emitting portion structure shown in FIG. 5 (b) (c), the shine red R, the scanning electrodes Y1 (b) the signal electrode X1 (a) as shown in FIG. 5 (d) on becomes, the shine green G and Y1 (a) X1 (a), and Y1 (b) and X1 (b)
がONになり、青色Bを光らせるにはY1(a)とX1(b)がONになる。 There will be ON, Y1 (a) and X1 (b) is turned ON to illuminate the blue B. なお、この図では透明電極4が信号電極、背面電極6が走査電極である場合を示したが逆であってもよい。 The transparent electrode 4 is a signal electrode in this figure, the back electrode 6 is illustrates the case where a scanning electrode may be reversed.

【0028】実施の形態6. [0028] Embodiment 6. 図6は本発明の他の実施の形態による有機ELDの要部を示し、(a)は表示面の平面図、(b)(c)はそれぞれ(a)における実線で囲んだ部分を拡大した平面図である。 6 shows an essential part of an organic ELD according to another embodiment of the present invention, (a) is a plan view of the display surface, an enlarged view of a part surrounded by a solid line in (b) (c), respectively (a) it is a plan view. 本実施の形態ではストライプ状にトリオ配列されており、図6(b)は青色発光部Bを複数個の発光部分に分割した形状、図6 In this embodiment are trio arranged in stripes, FIG. 6 (b) shape obtained by dividing a blue light emitting unit B into a plurality of light emitting portions, FIG. 6
(c)は青色発光部Bの中央部に非発光部を配置した形状である。 (C) has a shape obtained by arranging the non-light emitting portion in the central portion of the blue light emitting unit B. なお、実施の形態1と同じ面積比にした場合、赤色:緑色:青色=6.67:5.83:1であり、赤色発光部Rと緑色発光部Gとは面積の差が小さいので、発光部分等に分割せずに実施の形態1と同様に発光部の面積を変えている。 In the case where the same area ratio as in the first embodiment, red: green: blue = 6.67: 5.83: 1, since the red light emitting unit R and the green light-emitting portion G difference area is small, the light-emitting portion or the like without dividing and changing the area of ​​the light emitting portion as in the first embodiment. このような構成にしても実施の形態5と同様にざらつき感が緩和できる。 Such be configured can be alleviated graininess similarly to the fifth embodiment.

【0029】実施の形態7. [0029] Embodiment 7. 図7(a)〜(c)はそれぞれ本発明の他の実施の形態による有機ELDの要部を示す断面図である。 Figure 7 (a) ~ (c) is a sectional view showing an essential part of an organic ELD according to another embodiment of the present invention, respectively. 図7(a)は青色の発光効率を赤色や緑色の発光効率に合わせるために透過率の低い青色カラーフィルター9b(色吸収型フィルター)を備えた場合を示しており、各色発光部の面積比を変えて同じ注入電流量で発光させるのに、青色カラーフィルター9bを用いることで、上記各実施の形態のように青色発光部の面積比を他の発光部に比べて極端に小さくしなくても所望の輝度比が得られ、面積比のアンバランスを緩和でき、ざらつき感を緩和することができる。 FIGS. 7 (a) shows a case with a low transmittance blue color filter 9b (color absorption filters) in order to match the blue light emission efficiency red and green luminous efficiency, the area ratio of each color light emitting portion to emit light at the same amount of injection current is changed, and by using a blue color filter 9b, not extremely smaller than the area ratio of the blue light-emitting portion to the other light emitting portion as the above-described embodiments also to obtain desired brightness ratio, can be relaxed unbalance area ratio, it is possible to alleviate the feeling of roughness. また、外光を反射しにくくなるので、コントラストも向上する。 Moreover, since hardly reflects external light, thereby improving contrast. また、色の再現性の良いフィルターを用いることも可能である。 It is also possible to use a color reproduction with good filter.

【0030】さらに、カラーフィルターを用いるのは1 [0030] In addition, it uses a color filter 1
色に限らず、図7(b)のように、2色以上にカラーフィルター9b、9gを配置することも可能で、この場合、輝度は低くなるが、色の再現性を良くすることができる。 Is not limited to color, as in FIG. 7 (b), placing the color filter 9b, the 9g more than two colors is also possible, in this case, the luminance is lowered, it is possible to improve the color reproducibility . また、カラーフィルターは、上記実施の形態1〜 The color filter in the form 1 of the embodiment
6と組み合わせることも可能である。 It can be combined with the 6.

【0031】また、図7(c)に示すように、発光層5 Further, as shown in FIG. 7 (c), the light-emitting layer 5
を白色発光させて各色発光部R、G、Bに備えたカラーフィルター9r、9g、9bにより白色発光から各色に変換してもよい。 Was white emission colors emitting unit R, G, color filters 9r provided in B, 9 g, may be converted from white light emission for each color by 9b. このように白色発光をカラーフィルター9r、9g、9bで各色に変換する場合には青色発光をカラー変換フィルター2r、2gで他の色に変換する場合に比べて発光色による発光効率の違いは小さいが、 The small difference in luminous efficiency due to light emission color as compared with the case of converting the blue light emitting color conversion filter 2r, other colors 2g is to convert this way the white light emission color filters 9r, 9 g, at 9b to each color But,
所望の輝度比が得られるとは限らず、上記各実施の形態と同様に面積比を変えることで輝度比を制御することができる。 Desired not always luminance ratio is obtained, it is possible to control the luminance ratio by changing the area ratio in the same manner as the above embodiments. なお、カラーフィルター9r、9g、9bとしては、カラー液晶ディスプレイに使用されるような染色型や顔料分散型のものなどが用いられる。 The color filter 9r, 9 g, as the 9b, such as dyeing type or pigment distributed as used in color liquid crystal display is used.

【0032】なお、上記各実施の形態では発光寿命の劣化のばらつきを無くすために各色発光部R、G、Bを同一の駆動電圧で駆動し、輝度比は面積比を変えることで制御した場合について説明したが、例えば、面積比を変えて輝度比を大ざっぱに調整し、微調整は駆動電圧を変えることによって行うなどのように、駆動電圧も多少変えて、輝度比を面積比と駆動電圧の両方を変えることにより制御してもよい。 [0032] In each of the above embodiment drives the respective color light emitting portions R, G, and B at the same driving voltage in order to eliminate variations in degradation of light emission life, when the luminance ratio was controlled by changing the area ratio has been described, for example, roughly adjusts the luminance ratio by changing the area ratio, fine adjustment such as done by varying the drive voltage, the drive voltage is changed slightly, the luminance ratio and the area ratio driving voltage it may be controlled by varying both. この場合にも、輝度比を駆動電圧のみで調整する場合に比べて発光寿命の劣化のばらつきは大きく改善される。 In this case, variation in the deterioration of the emission lifetime as compared with the case of adjusting the luminance ratio only in the driving voltage is greatly improved.

【0033】また、各色の輝度比は上述した実施の形態で説明した赤色:緑色:青色=2:7:1に限定されるものではなく、所望の白色に応じて適宜選択され得る。 Further, the luminance ratio of each color red has been described in the above embodiment: Green: Blue = 2: 7: is not limited to 1, may be appropriately selected depending on the desired white.

【0034】 [0034]

【発明の効果】以上のように、本発明によれば、赤、 As in the above, according to the present invention, according to the present invention, red,
青、緑色の各色発光部の面積比を変えることにより上記各発光色の輝度比を制御したので、輝度比を駆動電圧のみで調整する場合に比べて発光寿命の劣化のばらつきは大きく改善され、各色の輝度バランスが長時間崩れないで維持できる。 Blue, since controlling the luminance ratio of each emission color by changing the area ratio of each color light emitting portion of the green, the variation of the degradation of emission life as compared with the case of adjusting the luminance ratio only in the driving voltage is greatly improved, luminance balance of each color can be maintained without collapse time.

【0035】また、上記各色発光部にそれぞれ同一の駆動電圧を印加したときに各色発光部の輝度がそれぞれ所望のホワイトバランス値をとる輝度比になるように上記各色発光部の面積を制御し、上記駆動電圧の時間幅を各色発光部毎に制御することによりフルカラーを表示するように構成したので、上記効果に加えて駆動回路や駆動電源を簡略化できる。 Further, by controlling the area of ​​each color light emitting portion so that the luminance ratio to take the desired white balance value brightness of each color light emitting portions respectively when the same drive voltage is applied respectively to each color light emitting portion, since it is configured to display a full color by controlling the duration of the drive voltage for each color light emitting unit, thereby simplifying the driving circuit and the driving power source in addition to the above effects.

【0036】また、上記各色発光部が田の字状にモザイク配列され、赤色、青色、および緑色のうちの何れか1 Further, the respective color light-emitting portion is a mosaic arranged in a shape of fields, red, blue, and green one of 1
色の発光部を上記田の字の一方の対角線上に2個、残る2色の発光部を上記田の字の他方の対角線上に1個ずつ配置すれば、実質的画素数が増加し、高画質が得られる。 Two light emitting portion of the color on one of the diagonal lines of characters of the field, by disposing the light emitting portion of the two-color remaining one by one on a diagonal other of shape of the field, increases substantially the number of pixels, high image quality can be obtained. また、作製精度に裕度ができる。 Further, it is tolerance in manufacturing precision.

【0037】また、上記何れかの発光部を複数個の発光部分に分割したり、発光部の中央部に非発光部を配置したりすれば、面積比のアンバランスを緩和でき、近距離で見た場合の画像のざらつき感を緩和できる。 Further, or to divide the one of the light emitting portion to the plurality of light emitting portions, if or place a non-emitting portion in the central portion of the light emitting portion, it can mitigate the unbalance of area ratio, at a short distance You can mitigate the graininess of the image when viewed.

【0038】また、上記各色発光部がストライプ状にトリオ配列され、面積が最小の発光部が中央に配置されていれば、画像のぎらつき感を緩和できる。 Further, the respective color light-emitting portion is trio arranged in stripes, if the area with the lowest emission portion is disposed in the center, it can be alleviated glare image.

【0039】また、上記何れかの発光部に色吸収型フィルターを備えることにより、面積比のアンバランスを緩和できる。 Further, by providing the color absorbing filter of any of the above light-emitting portion can be alleviated imbalance of area ratio.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】 本発明の実施の形態1による有機ELDの要部を示し、(a)は表示面の平面図、(b)は(a)における線イの部分の断面図である。 [1] shows an essential part of an organic ELD according to a first embodiment of the present invention, is a cross-sectional view of a portion of the fibers in (a) a plan view of the display surface, the (b) is (a).

【図2】 本発明の実施の形態2による有機ELDの要部を示し、(a)は表示面の平面図、(b)は(a)における線イの部分の断面図である。 Figure 2 shows an essential part of an organic ELD according to a second embodiment of the present invention, is a cross-sectional view of a portion of the fibers in (a) a plan view of the display surface, the (b) is (a).

【図3】 本発明の実施の形態3による有機ELDの要部を示し、(a)は表示面の平面図、(b)は透明電極および背面電極の構成を説明する説明図である。 Figure 3 shows an essential part of an organic ELD according to a third embodiment of the present invention, (a) is a plan view of the display surface, (b) is an explanatory diagram for explaining the structure of the transparent electrode and the back electrode.

【図4】 本発明の実施の形態4による有機ELDの要部を示し、(a)は表示面の平面図、(b)は(a)における実線で囲んだ部分を拡大した平面図である。 Figure 4 shows an essential part of an organic ELD according to a fourth embodiment of the present invention, is a plan view enlarging a portion surrounded by a solid line in (a) a plan view of the display surface, the (b) is (a) .

【図5】 本発明の実施の形態5による有機ELDの要部を示し、(a)は表示面の平面図、(b)(c)はそれぞれ(a)における実線で囲んだ部分を拡大した平面図、(d)は透明電極および背面電極の構成を説明する説明図である。 Figure 5 shows an essential part of an organic ELD according to a fifth embodiment of the present invention, (a) is a plan view of the display surface, an enlarged view of a part surrounded by a solid line in (b) (c), respectively (a) plan view, (d) are explanatory views for explaining the structure of the transparent electrode and the back electrode.

【図6】 本発明の実施の形態6による有機ELDの要部を示し、(a)は表示面の平面図、(b)(c)はそれぞれ(a)における実線で囲んだ部分を拡大した平面図である。 6 shows an essential part of an organic ELD according to a sixth embodiment of the present invention, (a) is a plan view of the display surface, an enlarged view of a part surrounded by a solid line in (b) (c), respectively (a) it is a plan view.

【図7】 本発明の実施の形態7による有機ELDの要部を示す平面図である。 7 is a plan view showing an essential part of an organic ELD according to a seventh embodiment of the present invention.

【図8】 従来の実施の形態1による有機ELDの要部を示し、(a)は表示面の平面図、(b)は(a)における線イの部分の断面図である。 8 shows an essential part of an organic ELD according to a first conventional embodiment, a cross-sectional view of a portion of the fibers in (a) a plan view of the display surface, the (b) is (a).

【符号の説明】 DESCRIPTION OF SYMBOLS

1 表示面側透明基板、 2r、2g 色変換フィルター、 4 透明電極、5 発光層、 6 背面電極、 1 display surface side transparent substrate, 2r, 2 g color conversion filter, 4 a transparent electrode, 5 light-emitting layer, 6 a back electrode,
7 背面基板、 8 ブラックマトリクス、9g、9b 7 the rear substrate, 8 black matrix, 9g, 9b
カラーフィルター、 R 赤色発光部、 G 緑色発光部、 B青色発光部。 Color filters, R red light emitting unit, G green light emitting unit, B blue light emitting unit.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 山川 正樹 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内 (72)発明者 佐藤 岳 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Masaki Yamakawa, Chiyoda-ku, tokyo Marunouchi 2-chome No. 2 No. 3 Mitsubishi electric in Co., Ltd. (72) inventor Takeshi Sato, Chiyoda-ku, tokyo Marunouchi 2-chome No. 2 No. 3 three the Mitsubishi electric Co., Ltd.

Claims (7)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 赤色、青色、および緑色の発光部を有しフルカラーを表示する有機エレクトロルミネッセンス表示装置において、上記各色発光部の面積比を変えることにより上記各色発光部の輝度比を制御したことを特徴とする有機エレクトロルミネッセンス表示装置。 1. A red, blue, and the green organic electroluminescent display device for displaying full-color having a light emitting portion, it has to control the luminance ratio of each color light emitting part by changing the area ratio of the respective color light-emitting portion the organic electroluminescent display device according to claim.
  2. 【請求項2】 上記各色発光部にそれぞれ同一の駆動電圧を印加したときに各色発光部の輝度がそれぞれ所望のホワイトバランス値をとる輝度比になるように上記各色発光部の面積を制御し、上記駆動電圧の時間幅を各色発光部毎に制御することによりフルカラーを表示するように構成した請求項1記載の有機エレクトロルミネッセンス表示装置。 2. A controlling the area of ​​each color light emitting portion so that the luminance ratio to take the desired white balance value brightness of each color light emitting portion respectively upon application of a respective identical drive voltage to the respective color light-emitting section, the organic electroluminescent display device of claim 1, wherein configured to display a full color by controlling for each color light emitting unit time width of the drive voltage.
  3. 【請求項3】 上記各色発光部が田の字状にモザイク配列され、赤色、青色、および緑色のうちの何れか1色の発光部が上記田の字の一方の対角線上に2個、残る2色の発光部が上記田の字の他方の対角線上に1個ずつ配置されている請求項1または2記載の有機エレクトロルミネッセンス表示装置。 Wherein each color light emitting portion is a mosaic arranged in a shape of fields, two red, blue, and any one color of the light emitting portion of the green on one diagonal line of characters of the field remains emitting portion of the two-color organic electroluminescent display device according to claim 1 or 2 wherein is arranged one by one on the other diagonal line of characters of the field.
  4. 【請求項4】 上記何れかの発光部が複数個の発光部分に分割されている請求項1ないし3の何れかに記載の有機エレクトロルミネッセンス表示装置。 Wherein said one of the light emitting portion a plurality of organic electroluminescent display device according to any one of claims 1 is divided 3 to the light emitting portion.
  5. 【請求項5】 上記何れかの発光部の中央部に非発光部を配置した請求項1ないし3の何れかに記載の有機エレクトロルミネッセンス表示装置。 Wherein any of the above organic electroluminescent display device according to any one of claims 1 to 3 was placed non-light emitting portion in the central portion of the light emitting portion.
  6. 【請求項6】 上記各色発光部がストライプ状にトリオ配列され、面積が最小の発光部が中央に配置されている請求項1または2記載の有機エレクトロルミネッセンス表示装置。 Wherein each color light emitting portion is trio arranged in stripes, the organic electroluminescent display device of the area minimum of claim 1 or 2, wherein the light emitting portion is disposed in the center.
  7. 【請求項7】 上記何れかの発光部に色吸収型フィルターを備えた請求項1ないし6の何れかに記載の有機エレクトロルミネッセンス表示装置。 7. The organic electroluminescent display device according to any preceding any one of claims 1 including a color absorbing filter to the light emitting portion 6.
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