CN100421278C - Organic LED luminous layer and organic LED display panel using same - Google Patents

Organic LED luminous layer and organic LED display panel using same Download PDF

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CN100421278C
CN100421278C CN 200510075494 CN200510075494A CN100421278C CN 100421278 C CN100421278 C CN 100421278C CN 200510075494 CN200510075494 CN 200510075494 CN 200510075494 A CN200510075494 A CN 200510075494A CN 100421278 C CN100421278 C CN 100421278C
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light
emitter
light emitting
emitting layer
nanometers
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CN1688037A (en
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洪敏玲
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友达光电股份有限公司
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一种有机发光二极管的发光层,用以发出一白光,该发光层的材料包括主发光体、第一客发光体以及第二客发光体。 A light emitting layer of one organic light emitting diode for emitting a white light emitting material of the emission layer includes a main body, a first and a second light emitter off off light emitter. 主发光体的发光波长大约介于300纳米至530纳米。 Emission wavelength range of the main emitter 300 nanometers to about 530 nanometers. 第一客发光体的发光波长大约介于300纳米至530纳米。 Emission wavelength of the first light emitter off between about 300 nm to 530 nm. 第二客发光体的发光波长大约介于530纳米至720纳米。 Emission wavelength of the second light emitter off between about 530 to 720 nm.

Description

有机发光二极管的发光层及应用其的有机发光二极管显示面板【技术领域】本发明是有关于一种发光层材料,且特别是有关于一种应用于有机发光二极管的发光层材抖.【背景技术】4专纟克的有才凡发光二极管(Organic L i gh t — Em i 11 i ng Diode, 0LED) 显示面板为多层堆栈结构,阳极、电洞传输层、发光组件、电子传输层及阴极系依序设置于基板上.发光组件包括一主客掺杂系统, 即在主发光体中掺杂少量的客发光体.当阴极及阳极被施加一电压时,电子将由阴极以通过电子传输层的方式注入发光层,电洞将由阳极以通过电洞传输层的方式注入发光层,电子及电洞在发光层中结合后会致使主发光体由基态激发到激态.由于处于激态的主发光体不稳定,故主发光体必会由激态返回到基态,并将能量传递给客发光体.当客发光体接收能量而由基态激发到激态时, Emitting layer and application of organic light emitting diode OLED display panel thereof TECHNICAL FIELD The present invention relates to a light emitting layer material, and more particularly relates to a light-emitting layer material is applied to the organic light emitting diode shaking. BACKGROUND technical Si] 4 g talented specifically where a light emitting diode (Organic L i gh t - Em i 11 i ng diode, 0LED) display panel is a multilayer stack structure, an anode, a hole transport layer, a light emitting component, an electron transport layer, and the cathode lines are sequentially disposed on the substrate the light emitting assembly comprises a doping system subject and object, i.e., a small amount of doped luminous material off the main light emitter. when the cathode and the anode a voltage is applied, electrons from the cathode through the electron transport layer way into the emitting layer, hole by anodic manner through the hole transport layer into the emitting layer, the electrons and holes in the light emitting layer will cause the main emitter excited from the ground state to the excited state. As in the primary excited state emitter unstable, so that the main emitter will return to the ground state from the excited state, and energy transfer to the light emitting guest material. when the customer receives energy emitter is excited from the ground state to the excited state, 发光体将产生单重态激子(singlet excition)及三重态激子(triplet excition). 由于电子自旋态的分布率,都会造成三重态激子及单重态激子的形成机率约为3: 1.单重态激子或三重态激子将以释放光子的形式返回稳定的基态,使得有机发光二极管产生电激发光的现象.发光组件系发出白光,并由二种或二种以上波长的光所混合而成.混合白光的方式一般常见的有二种, 一种为混合蓝绿色光以及黄色光,另一种为混合红色光、绿色光以及蓝色光.传统发光组件依结构分为三种.第一种发光组件为三层主发光体各自搭配红光、 绿光、蓝光的客发光体的三层结构,每一层发光层系分别发光红光、 绿光以及蓝光的三原色光,以混合成白光.第二种发光组件为主发光体搭配蓝光客发光体以及主发光体搭配红光客发光体的双层结构.第三种发光组件为蓝光主发光体搭配黄光或红 Emitter produces single exciton (singlet excition) and a triplet exciton (triplet excition). Since the distribution of the electron spin state, will cause the formation of triplet excitons and singlet excitons probability of about 3 : 1. singlet excitons or triplet excitons release form of photons will return to a stable ground state, a phenomenon such that the organic light emitting diode electrically excited light-emitting component emits white light system, by two or more than two wavelengths the mixed light generally common mixing white there are two ways, one for the blue-green light and yellow light mixing, into another structure by mixing red light, green light and blue light. conventional light-emitting component three-layer structure of three. the first component is a light emitting phosphor each with three primary red, green, and blue light emitters off, lines were each luminescent layer emitting light of three primary colors red, green and blue light to be mixed into white light. the second light emitting module with a blue-based light emitter and the main emitter off with the emitter-layer structure of a red light emitter off. the third primary light emitting component is a blue or yellow with the red phosphor 客发光体的单层结构.然而,双层结构或三层结构等发光组件虽可以得到高效率及纯白光色,但制程偏向繁复.此外,单层结构的发光组件,其制程虽简便,但发光效率不高,容易造成白光效率不高以及光色不纯等问题.因此,如何兼顾筒化制程与提升光色效率实为当前的重要课题.【发明内容】有鉴于此,本发明的目的就是在提供一种发光层材料及其应用的有机发光二极管,发光层材料为一种主发光体以及一种客发光体混合而成的单层发光层结构,蓝光至蓝绿光的主发光体与红光至黄光的客发光体系以特定比例混合而成,用以发出纯白色光.再者, 本发明的发光层材朴更包括另一客发光体,其发光范围系介于蓝光至蓝绿光范围之间,用以发出纯白色光并提高发光效率.根据本发明的目的,提出一种有机发光二极管的发光层,用以发出一白光,该发光层 Layer structure luminous body off. However, the double-layered structure or a three-layered structure, etc. Although the light-emitting element can be obtained with high efficiency and white light color, but the process is complicated biased. Further, a single layer structure of the light emitting components, although the process which is simple, but luminous efficiency is not high, likely to cause white color and optical efficiency is not high impurity problems. Therefore, how to balance the lifting cylinder of the process and the efficiency of the solid light color for the current important subject. SUMMARY oF tHE iNVENTION in view of this, object of the present invention It is to provide a luminescent layer material and the organic light emitting diode applications, as a luminescent layer material and an emitter of the main emitter off the light emitting layer are mixed monolayer structure, blue to blue-green light-emitting body main off the light emitting system is mixed with yellow to red light from a specific ratio, to emit white color light. further, the light emitting layer material of the present invention further comprises a Pu-off further light emitter, the emission range of between blue lines to between the blue-green range, and to emit white color light emission efficiency increase. the object of the present invention, a light emitting layer of an organic light emitting diode for emitting a white light, the light emitting layer 材朴包括主发光体、第一客发光体以及第二客发光体.主发光体,其发光波长大约介于300纳米至530纳米, 系用以发出蓝光或近似蓝光.第一客发光体,其发光波长大约介于3 0 0纳米至5 3 0纳米,系用以发出蓝光、近似蓝光或蓝绿光.第二客发光体,其发光波长大约介于5 3 0纳米至72 0纳米,系用以发出红光或黄光.根据本发明的目的,再提出一种有机发光二极管的发光层,用以发出一白光,该发光层材朴包括一主发光体以及一客发光体.一主发光体,其发光波长大约介于3 0 0纳米至5 3 0纳米,系用以发出蓝光或近似蓝光.客发光体,其发光波长大约介于5 3 0纳米至720 纳米,系用以发出红光或黄光,且该客发光体的掺杂体积比例大约介于0. 01 % ~ 5 % .根据本发明的目的,又提出一种有机发光二极管显示面板,包括第一基板组件、第二基板组件以及翁着剂。 Pak includes a main body light emitting material, a first and a second light emitter off off light emitter main emitter, the emission wavelength of between approximately 300 nm to 530 nm to emit blue-based blue or near the first light emitter off, the emission wavelength of between approximately 300 nanometers to 530 nanometers, to emit blue-based, blue or blue-green approximation. The second light emitter off, the emission wavelength of between approximately 530 nanometers to 720 nanometers, line to emit red or amber. the object of the present invention, another proposed light-emitting layer of one organic light emitting diode for emitting a white light, the light emitting layer comprises a material Pak light emitter, and a main passenger illuminant a the main emitter, the emission wavelength of between approximately 300 nanometers to 530 nanometers, based for emitting blue or near blue. off light, the emission wavelength of between approximately 530 to 720 nm, for the Department of emit red or yellow, and the volume ratio of the off-doped emitter is between about 0.01% to about 5%. the object of the present invention, there is also proposed an organic light emitting diode display panel including a first substrate assembly, a second substrate assembly and the agent Weng. 第一基板组件包括第一基板、阳极及相对的阴极、发光层、电子传输层以及电洞传输层. 阳极及相对的阴极系设置于该第一基板上.发光层系设置于该阳极与该阴极之间,用以产生一白光.发光层包括主发光体与客发光体;主发光体的发光波长大约介于3 0 0纳米至5 3 0纳米,系用以发出蓝光或近似蓝光;客发光体的发光波长大约介于530纳米至720纳米, 系用以发出红光或黄光,且该客发光体的掺杂体积比例大约介于0.01% ~ 5%.电洞传输层系设置于该发光层以及该阳极之间.电子传输层系设置于该发光层以及该阴极之间.第二基板组件至少包含一第二基板,该第二基板组件系相对设置于该第一基板组件.黏着剂设置于该第一基板以及该第二基板之间.根据本发明的目的,更提出一种有机发光二极管显示面板,包括第一基板组件、第二基板组件以及恭着剂.第一基板组 A first substrate assembly comprising a first substrate, an anode and a cathode opposing the light-emitting layer, electron transporting layer and a hole transport layer. The anode and cathode lines arranged opposite on the first substrate to the light-emitting layer system is provided with the anode between a cathode for generating a white light emitting layer includes a main body and a light emitting guest material;. emitter main emission wavelength between about 300 nanometers to 530 nanometers, based for emitting blue or blue approximation; off emitter emission wavelength between about 530 to 720 nm, for emitting red or yellow lines, and the ratio of the volume of the doped emitter off approximately between 0.01% to 5% based hole transport layer disposed on the the light emitting layer between the anode and the electron transporting layer disposed between the line light emitting layer and the cathode. the second substrate assembly comprises at least a second substrate, the second substrate assembly line disposed opposite to the first substrate assembly. adhesive disposed between the first substrate and the second substrate. the object of the present invention further provides an organic light emitting diode display panel including a first substrate assembly, second substrate assembly, and the agent Christine first substrate group 件包括第一基板、阳极及相对的阴极、发光层、电子传输层以及电洞传输层. 阳极及相对的阴极系设置于该第一基板上.该发光层的材料包括主发光体、第一客发光体以及第二客发光体.主发光体,其发光波长大约介于3 0 0纳米至5 3 0纳米,系用以发出蓝光或近似蓝光.第一客发光体,其发光波长大约介于3 0 0纳米至5 3 0纳米,系用以发出蓝光、近似蓝光或蓝绿光。 A first member comprising a substrate, an anode and a cathode opposing the light-emitting layer, electron transporting layer and a hole transport layer. Based anode and a cathode disposed opposite to the first substrate on the material of the light emitting layer comprises a light emitting main body, the first a second light emitter, and off off light emitter main emitter, the emission wavelength of between approximately 300 nanometers to 530 nanometers, based blue or near blue light to emit first light emitting guest material, the emission wavelength of about dielectric at 300 nanometers to 530 nanometers, to emit blue-based, blue-green or blue approximation. 第二客发光体,其发光波长大约介于530 纳米至7 2 0纳米,系用以发出红光或黄光.根据本发明的目的,再提出一种有机发光二极管的发光层,用以发出一白光,该发光层的材料包括主发光体、第一客发光体以及第二客发光体.其中该第一客发光体的最高填到电子轨域(Highest Occupied Molecular Orbital; HOMO)的绝对值系小于或等于该主发光体的HOMO绝对值,且该第一客发光体的最低未填电子轨域(Lowest Unoccupied Molecular Orbital; L,) 的绝对值系大于或等于该主发光体的LUMO绝对值.该第二客发光体的HOMO绝对值系小于或等于该第一客发光体的HOMO绝对值,且该第二客发光体的LUMO绝对伹系大于或等于该第一客发光体的LUMO绝对值.该主发光体的HOMO绝对值系大于或等于该电洞传输层的HOMO绝对值,且该主发光体的LUMO绝对值系小于或等于该电子传输层的LUMO绝对值。 A second light emitter off, the emission wavelength of between approximately 530 nanometers to 720 nanometers, based for emitting red or amber. The object of the present invention, another proposed light-emitting layer of one organic light emitting diode for emitting a white light emitting material of the emission layer includes a main body, a first and a second light emitter off off off the first light emitter wherein the emitter is filled up to the electron orbital (highest Occupied Molecular Orbital; HOMO). absolute Department of less than or equal to the absolute value of HOMO of the main light emitter and a minimum of the first light emitter off the unfilled electron orbital (lowest Unoccupied Molecular Orbital; L,) is greater than or equal to the absolute value of the lines of the main emitter absolute LUMO value. HOMO absolute value of the second light emitter based off equal to or less than an absolute value of HOMO of the first light emitter off, and the LUMO of the second guest absolute Qu-based phosphor LUMO greater than or equal to the first light emitter off absolute value. HOMO absolute value of the primary luminous body system is greater than or equal to the hole transport layer, an absolute value of the HOMO, LUMO and the absolute value of the main emitter system less than or equal to the absolute value of the LUMO of the electron transport layer. 为让本发明的上述目的、特征、和优点能更明显易懂,下文特举一较佳实施例,并配合所附图式,作详细说明如下: 【附图说明】图1绘示依照本发明一较佳实施例的有机发光二极管显示面板的一种示意图.图2绘示依照本发明的较佳实施例的发光效率与电流密度的关系图.图3A绘示本发明的较佳实施例的驱动电压与色度坐标值(CIEX) 的关系图.图3B绘示本发明的较佳实施例的驱动电压与色度坐标值(CIEy) 的关系图。 In order to make the above-described object of the present invention, features, and advantages can be more comprehensible, a preferred embodiment hereinafter, and the accompanying figures, described in detail below: BRIEF DESCRIPTION OF DRAWINGS FIG. 1 shows in accordance with the present one kind of an organic light emitting diode panel in a schematic view a preferred embodiment of the invention. FIG. 2 illustrates the relationship of FIG emission efficiency and current density in accordance with the preferred embodiment of the present invention. FIG. 3A illustrates a preferred embodiment of the present invention. chromaticity coordinates values ​​of driving voltage (CIEy) diagram of driving voltage diagram of chromaticity coordinates value (the CIEX) Figure 3B illustrates the preferred embodiment of the present invention, FIG. 图4绘示依照本发明的较佳实施例的相对亮度与操作时间的关系图。 FIG 4 illustrates the relationship between operating time and the relative luminance in accordance with a preferred embodiment of the present invention. 【具体实施方式】本发明的主要构想,系采用一种主发光体以及一种客发光体材料以特定比例混合而成的单层发光层结构,主发光体系用以发出蓝光或蓝绿光,客发光体系用以发出红光或黄光,以混合发出纯白色光.再者,本发明的发光层材料更包括另一客发光体,其发光范围系为蓝光或蓝绿光,与主发光体混合后用以发出纯白色光并提高发光效率。 DETAILED DESCRIPTION A primary concept of the present invention, uses a main system and an off luminescent phosphor material are mixed in a specific ratio single light emitting layer structure, the main emission system for emitting blue or blue-green light, off system for emitting light emitting red or amber, to emit mixed white light. further, the light emitting layer material of the present invention further comprises further passenger emitter, the emission range of blue or blue-green lines, and the main emission after mixed to emit white color light and increase the light emission efficiency. 以下系举几組实施例为例进行说明,然此些实施例并不会限缩本发明的欲保护范围.本实施例的有机发光二极管的发光层,用以发出一白光,发光层材料至少包括主发光体以及客发光体。 The following Example sets based cited as an example, then such embodiments do not want to narrow down the scope of the present invention. Emitting layer of the organic light emitting diode according to the present embodiment, to emit a white light emitting layer material at least It includes a main body and a light emitting guest emitter. 主发光体的发光波长大约介于3 0 0纳米至5 3 0纳米,较佳的是介于3 60纳米至480纳米.客发光体的发光波长大约介于5 3 0纳米至72 0纳米,较佳的是介于530 纳米至7 0 0纳米.发出蓝光或蓝绿光的主发光体与发光红光或黄光的客发光体系混合出白光。 A main emission wavelength of approximately between emitter 300 nanometers to 530 nanometers, preferably is between 360 nm to 480 nm. Emission wavelength of the emitter is approximately between off 530 nanometers to 720 nanometers, preferred is between 530 nm to 700 nm. mixing the white light emitted blue or blue-green light emission off system main body and emitting red or yellow light emission. 客发光体的掺杂体积比例大约介于0.01% ~ 5 % ,较佳的是介于0. 1 %至5 % 。 Doped emitter off volume ratio is between about 0.01% to 5%, preferably is between 0.1 to 5 percent. 客发光体的最高填到电子轨域(Highest Occupied Molecular Orbital; HOMO)绝对值系小于或等于主发光体的HOMO绝对值,且客发光体的最低未填电子轨域(Lowest Unoccupied Molecular Orbital; LUMO) 绝对值系大于或等于主发光体的LUMO绝对值.主发光体以及客发光体的分子量大约小于1 000 .主发光体例如是包含MADN ( 2—methy卜9, 10—di (2-naphthyl) anthracene).客发光体例如是包含DCJTB (4-(dicya腦ethylene)- 2-卜buty卜6-(1, 1, 7, 7-tetramethyl- julol idyl-9-enyl)-4〃-pyran))或Perylene衍生物-MADN 及DCJTB的化学结构式揭露如下.在另一实施例中,发光层材料包括一第一客发光体以及一第二客发光体。 Filling up passenger emitter to the electronic orbitals (Highest Occupied Molecular Orbital; HOMO) based absolute value less than or equal absolute value of HOMO of the main light emitters and light emitter off the lowest unfilled electron orbital (Lowest Unoccupied Molecular Orbital; LUMO ) is greater than or equal to the absolute value of LUMO based absolute value of the main emitter. emitter and the main emitter off molecular weight less than about 1,000. For example primary emitter comprising MADN (2-methy Bu 9, 10-di (2-naphthyl .) anthracene) is off, for example, comprises phosphor DCJTB (4- (dicya brain ethylene) - 2- buty Bu Bu 6- (1, 1, 7, 7-tetramethyl- julol idyl-9-enyl) -4〃-pyran )) or Perylene derivatives of formula -MADN and DCJTB of the following disclosure. in embodiments, the light emitting layer comprises a first guest material and a second light emitter emitting guest material in another embodiment. 第一客发光体的发光波长大约介于3 0 0纳米至5 3 0纳米,较佳的是介于36 0纳米至4 8 0纳米。 Emission wavelength of the first light emitter off between about 300 nanometers to 530 nanometers, preferably is between 360 nanometers to 480 nanometers. 第一客发光体的掺杂体积比例大约介于0. 01 %至50 % ,较佳的是介于0. 1 %至20% .第一客发光体与主发光体的发光波长系实质上相同,介于蓝光或蓝绿光的范围. 第一客发光体可补强蓝光,有助于混合出纯白光色,提高发射白光的效率。 Volume of the first doped emitter off ratio is between about 0.01 to 50 percent, preferably is between from 0.1 to 20% The light emitting system of the first wavelength light emitter off the main light emitter is substantially the same, between the range of blue or blue-green light. the first luminous material may be reinforced off blue light, the white light color facilitate mixing, to improve the efficiency of emitting white light. 第二客发光体的发光波长大约介于5 3 0纳米至72 0纳米, 较佳的是介于5 3 0纳米至7 0 0纳米,系用以发出红光或黄光.第一客发光体的HOMO绝对值系大于或等于第二客发光体的HOMO绝对值,且第一客发光体的LUM0绝对值小于或等于第二客发光体的LUM0绝对值.再者,主发光体、第一客发光体或第二客发光体的分子量大约小于IOOO.较佳的是,第一客发光体以及第二客发光体的分子量大约小于1 00 0.本发明的发光层材料较佳的是应用于有机发光二极管显示面板。 Emission wavelength of the second light emitter off between about 530 nanometers to 720 nanometers, preferably is between 530 nanometers to 700 nanometers, based for emitting red or amber. The first light emitting off HOMO absolute value of the body is equal to or greater than HOMO absolute value based off the second light emitter, the light emitter and LUM0 first guest absolute value equal to or smaller than the absolute value of the second passenger LUM0 light emitter. Further, the main emitter, the first the molecular weight of a passenger or the second luminescent light emitter off of less than about IOOO. preferably, the molecular weight of the first and second light emitter off off light emitter 100 is less than about 0. light emitting layer material of the present invention, preferred is applied to an organic light emitting diode display panel. 请参照图1,其绘示依照本发明一较佳实施例的有机发光二极管显示面板的一种示意图。 Referring to FIG. 1, which schematically shows a schematic view of an organic display panel in accordance with a preferred embodiment of the light emitting diode of the present invention. 本实施例的有机发光二极管显示面板1 0 0 包括第一基板组件110、第二基板组件130以及黏着剂126.第一基板组件包括第一基板111、阳极11 2及相对的阴极12 0、发光层116、 电洞传输层114以及电子传输层118。 The organic light emitting diode display panel according to the present embodiment 100 includes a first substrate assembly 110, assembly 130 and a second substrate 126. The first substrate adhesive assembly comprises a first substrate 111, an anode 112 and a cathode 120 opposing the light emitting layer 116, hole transport layer 114 and electron transport layer 118. 阳极112及相对的阴极120, 系设置于第一基板111上.如图1所示,阳极112系设置于第一基板上111,阴极12 0与阳极11 2之间系具有多层堆栈结构.阳极11 2 例如是包含铟锡氧化物(Indium Tin Oxide, ITO).发光层116系设置于阳极112与阴极122之间,用以产生一白光.发光层至少包括主发光体以及客发光体.主发光体的发光波长大约介于300纳米至5 3 0纳米.客发光体的发光波长大约介于530纳米至720纳米,且客发光体的掺杂体积比例大约介于0. 01% ~ 5% ,较佳的是介于0. 1 % - 5% 。 The anode 112 and cathode 120 opposing, are disposed on the first substrate 111 shown in Figure 1, an anode 112 are disposed on the first substrate 111, a cathode 120 and line 112 between the anode having a multilayer stack structure. the anode 112 comprising, for example, indium tin oxide (indium tin oxide, ITO). 116-based light-emitting layer disposed between the anode 112 and the cathode 122, to generate a white light emitting layer includes at least a main light emitter and a light emitting guest material. emission wavelength range of the main emitter 300 nanometers to about 530 nanometers. emitter off wavelength of emission between approximately 530 nm to 720 nm, and the volume ratio of phosphor-doped off between about 0.01% to 5 %, preferably it is between 0.1% --5%. 电洞传输层114系设置阳极112上,并位于发光层116以及阳极11 2之间。 Hole transport layer 114 based on an anode 112, and 112 positioned between the light emitting layer 116 and the anode. 电子传输层11 8系形成于发光层11 6上,并位于发光层116以及阴极之间.第二基板组件130至少包含第二基板132,第二基板组件130系相对设置于第一基板组件110. I占着剂1 2 6设置于第一基板111以及第二基板1 32之间.较佳的是,发光层材料包括一第一客发光体以及一第二客发光体。 Based electron transport layer 118 is formed on the light emitting layer 116, and a light emitting layer disposed between a cathode 116 and second substrate assembly 130 comprises at least a second substrate 132, second substrate assembly 130 are disposed opposite to the first substrate assembly 110 . the I occupied agent 126 provided between the substrate 111 to the first 132 and the second substrate. preferably, the luminescent layer comprising a first material and a second light emitter-off guest emitter. 第一客发光体的发光波长大约介于3 00纳米至5 3 0纳米,较佳的是介于36 0纳米至480纳米.第一客发光体的掺杂体积比例大约介于0. 01%至50% ,较佳的是介于0. 1%至20% .第一客发光体与主发光体的发光波长系实质上相同,介于蓝光或蓝绿光的范围.第一客发光体可补强蓝光,有助于混合出纯白光色,提高发射白光的效率„第二客发光体的发光波长大约介于5 30纳米至720纳米,较佳的是介于5 3 0纳米至7 00纳米,系用以发出红光或黄光.第二客发光体的HOMO绝对值系小于或等于第一客发光体的H0M0绝对值, 且第二客发光体的LUMO绝对值系大于或等于第一客发光体的L謂O 绝对值。主发光体的HOMO绝对值系大于或等于电洞传输层的HOMO 绝对值,且主发光体的LUM0绝对值系小于或等于电子传输层的LUMO 绝对值.当阴极1 2 0及阳极111被施加一电压时,电子将由阴极以通过电子传输层118 Emission wavelength of the first light emitter off between about 300 nanometers to 530 nanometers, preferably is between 360 nanometers to 480 nanometers. Doping a volume ratio of the first luminous material off of between about 0.01% to 50%, preferably it is between 0.1 to 20%. off system of the first emission wavelength and luminous material substantially the same as the primary light emitter, between the range of blue or blue-green light. the first luminous material off blue light may be reinforced, facilitate mixing the white light color, emission efficiency of the white light "off emission wavelength of the second light emitter is approximately between 530 to 720 nm, preferably it is between 530 nanometers to 7 00 nm, for emitting red or yellow lines. HOMO absolute value of the second light emitter based off equal to or less than the absolute value of the first off H0M0 light emitter, and the absolute value of the LUMO of the second light emitter based off greater than or equal the absolute value of the absolute value of HOMO LUMO LUM0 L O that the absolute value of the first light emitter is off. HOMO absolute value of the primary luminous body system is equal to or greater than the hole transport layer, and the main emitter or less based electron transport layer, the absolute value. when the cathode 120 and the anode 111 is applied to a voltage, electrons from the cathode to the electron transporting layer 118 by 方式注入发光层116,电洞将由阳极112以通过电洞传输层114的方式注入发光层116,电子及电洞在发光层116 中结合后会致使主发光体由基态激发到激态.由于处于激态的主发光体不稳定,故主发光体必会由激态返回到基态,并将能量传递给客发光体。当客发光体接收能量而由基态激发到激态时,客发光体将产生单重态激子(singlet excition)及三重态激子(triplet excition), 由于电子自旋态的分布率,都会造成三重态激子及单重态激子的形成机率约为3: 1。单重态激子或三重态激子将以释放光子的形式返回稳定的基态,使得有机发光二极管产生电激发光的现象。第二基板组件130更包括一彩色滤光片134,系设置于第二基板132上。发光层116所发出的白光系透过彩色滤光片134而形成彩色光点,并构成彩色图像。以下系举出几组实验结果说明本实施例的有机发光二极管的显示面 Way into the emitting layer 116, hole by anode 112 is injected through a hole transport layer 114 luminescent layer 116, electrons and holes in the light emitting layer 116 binding will cause the main emitter excited from the ground state to the excited state. As in the excited state of the main emitter unstable, so that the main emitter will return from the excited state to the ground state, and energy transfer to the guest emitter. when the passenger phosphor receives energy is excited from the ground state to the excited state, guest emitter will generating singlet excitons (singlet excition) and a triplet exciton (triplet excition), due to the distribution of the electron spin state, will result in the formation probability of triplet excitons and singlet excitons is about 3: 1. singlet excitons or triplet excitons release form of photons will return to a stable ground state, the organic light emitting diode so that the phenomenon of electrical excitation light. the second substrate assembly 130 further includes a color filter 134, based on the first set on the titanium substrate 132 display surface. emitted from the white light emitting layer 116 is transmitted through the color filter 134 and colored light spot is formed, and constitutes a color image. the following experimental results based include groups described organic light emitting diode of the present embodiment. 板的性质.再接下来的实验中,发光层材朴包含主发光体MADN,掺杂8%第一客发光体Perylene以及0. 1% 第二客发光体DCJTB.并且搭配ITO为阳极,NPB为电洞传输层,Alq为电子传输层,LiF/Al为复合阴极形成的有机发光二极管的显示面板,进行以下的实验.相关实验实验一一照度将阴极与阳极通以电流,并测量发光亮度.图2绘示依照本发明的较佳实施例的发光效率与电流密度的关系g.由图可知,本实施例的发光层的发光效率可达7. 9 cd/A,显示其高效率的光电转换效能.实验二一色度将阴极与阳极通以电流,并以色彩分析仪测量色度坐标值CIEX, CIEY,并绘示驱动电压与色度坐标值的关系如下.图3A绘示本发明的较佳实施例的驱动电压与色度坐标值(CIEX)的关系图,图3B绘示本发明的较佳实施例的驱动电压与色度坐标值(CIEy)的关系图。 Properties of the plate. The next experiment, the light emitting material layer includes a main emitter the MADN Park, 8% doped first emitter Perylene passenger and 0.1% DCJTB second emitter off. And with the ITO as the anode, of NPB is a hole transport layer, an electron transport layer of Alq, LiF / Al for the organic light emitting diode display panel formed of composite cathode, the following experiment. experiment eleven illuminance related to a current through the cathode and the anode, and emission luminance measurement Figure 2 shows the relationship between the current density and luminous efficiency of g in accordance with a preferred embodiment of the present invention can be seen from FIG luminous efficiency light emitting layer according to the present embodiment up to 7. 9 cd / a, which show high efficiency photoelectric conversion efficiency. the second experiment a chrominance current is passed through the cathode and anode, and a color analyzer to chromaticity coordinate value CIEX, CIEY, and illustrates the relationship between the drive voltage and chromaticity coordinate values ​​as follows. FIG. 3A shows the present chromaticity coordinates values ​​of the driving voltage (the CIEX) relationship diagram of the preferred embodiment of the present invention, FIG. 3B driving voltage chromaticity coordinates value (CIEy) relationship diagram illustrates the preferred embodiment of the present invention. 在同一驱动电压的下,将CIEx及CIEY与囯际照明委员会的色度坐标图比对。 Under the same driving voltage, the chromaticity coordinates map CIEx and CIEY with the International Commission on Illumination comparison. 由结果可知,本实施例的发光层材料可得到纯白光色.实验三一稳定度测试有机发光二极管的显示面板连续施加固定电压,于不同时间点测定其亮度。 From the results, the light-emitting layer material of the present embodiment, white light color is obtained. Thirty-one stability test experiments organic light emitting diode display panel continuously applying a fixed voltage, the brightness measured at different time points. 将初始亮度3 0 0 0 nits为设定为10 0%,并分别计算其相对亮度。 The initial 3 0 0 0 nits brightness is set to 100%, respectively, and calculated relative luminance. 藉由比较随着操作时间的增长,有机发光二极管的相对亮度的变化程度,用以探讨有机发光二极管的显示面板的稳定度. 图4绘示依照本发明的较佳实施例的相对亮度与操作时间的关系图。 By comparison with the growth of the operating time, the degree of change in the relative luminance of the organic light emitting diode display panel to investigate the stability of the organic light emitting diode. FIG. 4 shows the relative brightness of the operation in accordance with a preferred embodiment of the present invention diagram of time. 当操作时间持续3 3 3小时的后,有机发光二极管亮度仍可维持70%。 When the operation duration 333 hours, luminance of the organic light emitting diodes can still be maintained 70%. 由此可知,本实施例的发光层材料的稳定度佳,赋予有机发光二极管极长的使用寿命。 This indicates that the stability of the light emitting layer material of the present embodiment is good, imparting an organic light emitting diode extremely long service life. 本发明上述实施例所揭露的发光层及其应用于有机发光二极管的显示面板,其采用一种主发光体以及一种客发光体材料混合而成的单层发光层结构,蓝光至蓝绿光的主发光体与红光至黄光的客发光体系以特定比例混合而成,用以发出纯白色光.再者,本发明的发光层材料更包括另L客发光体,其发光范围系介于蓝光至蓝绿光范围之间,用以补强蓝光,加强纯白色光并提高发光效率.此外, 本实施例的发光层材料的稳定度佳,赋予有机发光二极管极长的使用寿命.综上所述,虽然本发明已以一较佳实施例揭露如上,然其并非用以限定本发明,任何熟习此技艺者,在不脱离本发明的精神和范围内,当可作各种的更动与润饰,因此本发明的保护范围当视后附的申请专利范围所界定者为准. The above-described embodiments of the invention disclosed and applied to the light emitting layer of the organic light emitting diode display panel, which uses a light emitter and a main passenger mixing one luminescent material emitting layer structure made of a single layer, blue light to blue green a main body and emitting yellow to red light emitting guest system from mixing in a specific ratio, to emit white color light. further, the light emitting layer material of the present invention further comprise another L off light, the luminous range based media blue to blue-green light in the range of between, for blue reinforcement, strengthening and improving the white color light emission efficiency. Furthermore, the stability of the light emitting layer material of the present embodiment is good, imparting an organic light emitting diode extremely long service life. mechanized said, although the present invention has been described in a preferred embodiment, they are not intended to limit the present invention, any person skilled in this art, without departing from the spirit and scope of the present invention, it may make various more moving and variations, so as to define the scope of the appended claims which are invention when the range of their equivalents.

Claims (9)

1. 一种有机发光二极管的发光层,该发光层的材料包括: 一主发光体,其发光波长介于300纳米至530纳米,该主发光体系包含MADN; 一第一客发光体,其发光波长介于300纳米至530纳米,该第一客发光体系包含Perylene;以及一第二客发光体,其发光波长介于530纳米至720纳米,该第二客发光体系包含DCJTB。 A light emitting layer of the organic light emitting diode, the light emitting layer material comprising: a main emitter, the emission wavelength of between 300 nanometers to 530 nanometers, the main light emitting system comprises the MADN; off a first light emitter, the emission a wavelength of between 300 nm to 530 nm, the light emitting system comprises a first passenger Perylene; off and a second light emitter, the emission wavelength of between 530 to 720 nm, the second system comprises a light emitting guest DCJTB.
2. 根据权利要求1所述的发光层,其特征在于,该第一客发光体的掺杂体积比例介于0. 0 1 %至5 0 % . The light emitting layer according to claim 1, wherein the volume of the first doped emitter off ratio is between 0.0% to 1 50%.
3. 根据权利要求2所述的发光层,其特征在于,该第一客发光体的掺杂体积比例介于0. 1 %至5 0 % . The light-emitting layer according to claim 2, wherein the volume of the first doped emitter off ratio is between 0.1% to 50%.
4. 根据权利要求2所述的发光层,其特征在于,该第二客发光体的掺杂体积比例介于0.01 %至5 % . 4. The light emitting layer according to claim 2, wherein the volume of the second doped emitter off ratio is between 0.01 to 5%.
5. 根据权利要求4所述的发光层,其特征在于,该第二客发光体的掺杂体积比例介于0.1 %至5 % . The light emitting layer according to claim 4, wherein the volume of the second doped emitter off ratio of between 0.1% to 5%.
6. 根据权利要求1所述的发光层,其特征在于,该第二客发光体的掺杂体积比例介于0.01 %至5 % • The light emitting layer according to claim 1, wherein the volume of the second doped emitter off ratio of between 0.01% to 5% •
7. 根据权利要求6所述的发光层,其特征在于,该第二客发光体的掺杂体积比例介于0.1 %至5 % . The light emitting layer according to claim 6, wherein the volume of the second doped emitter off ratio of between 0.1% to 5%.
8. 根据权利要求1所述的发光层,其特征在于,该第一客发光体以及该第二客发光体的分子量小于1 00 0 . 8. The light emitting layer according to claim 1, wherein the molecular weight of the first and second luminous material off off emission of less than 1,000.
9. 根据权利要求1所述的发光层,其特征在于,该主发光体、 该第一客发光体或该第二客发光体的分子量小于1000. 9. The light emitting layer according to claim 1, wherein the molecular weight of the main light emitter, the light emitter or the first passenger off the second light emitter is less than 1000.
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