WO2015158011A1 - Oled 器件及其制备方法 - Google Patents

Oled 器件及其制备方法 Download PDF

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Publication number
WO2015158011A1
WO2015158011A1 PCT/CN2014/076215 CN2014076215W WO2015158011A1 WO 2015158011 A1 WO2015158011 A1 WO 2015158011A1 CN 2014076215 W CN2014076215 W CN 2014076215W WO 2015158011 A1 WO2015158011 A1 WO 2015158011A1
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Prior art keywords
protective layer
oled device
substrate
sio
ranges
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French (fr)
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赵国
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/374,227 priority Critical patent/US9698371B2/en
Publication of WO2015158011A1 publication Critical patent/WO2015158011A1/zh
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H10K71/10—Deposition of organic active material
    • H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering

Definitions

  • the invention relates to an OLED device and a preparation method thereof, in particular to an OLED device with water vapor isolation function and a preparation method thereof.
  • organic light emitting displays organic light emitting displaY, OLED
  • OLED organic light emitting displaY
  • LCD liquid crystal display
  • the organic light emitting display is a light emitting element made of an organic material as a display light source, Therefore, in the process of fabricating the organic light-emitting display, there is a high requirement for the degree of water vapor isolation between the process environment and the place of use.
  • the cathode of the light emitting element is oxidized, so that The illuminating element loses its display function, which leads to a reduction in product quality.
  • the organic light-emitting element needs to be packaged with a material having a lower water vapor permeability to achieve separation of the organic light-emitting element from the water vapor of the external environment, thereby improving product quality.
  • the object of the present invention is to provide an OLED device having a water vapor barrier function and a preparation method thereof for the defects that the OLED device existing in the prior art is easily exposed to moisture during the preparation process.
  • An OLED device includes an OLED device body and a protective layer covering the OLED device body and encapsulating the OLED device body.
  • the chemical formula of the protective layer is SiO X C Y H Z , where X ranges from 2.5 to 0.5, Y ranges from 2.0 to 0.5, and Z ranges from 8 to 2.
  • the protective layer has a thickness of 300 A to 600 A.
  • the invention also provides a method for preparing an OLED device, comprising:
  • a SiO X C Y H Z protective layer is formed on the substrate by magnetron sputtering, wherein the value of X ranges from 2.5 to 0.5, and the value of Y The range is from 2.0 to 0.5, and the range of Z is from 8 to 2.
  • the mass ratio of the Teflon to the silicon oxide in the hybrid target is 4:1 to 3:1.
  • the SiO X C Y H Z protective layer is magnetron sputter-plated, and a bias voltage of -300 V to -500 V is applied to the substrate, and a sputtering temperature is 150 ° C to 420 ° C, and argon gas is used as a working gas.
  • the flow rate of argon gas is 300 sccm to 500 sccm, and the sputtering time is 20 min to 60 min.
  • the invention also provides a method for preparing another OLED device, comprising:
  • a protective layer of SiO X C Y H Z is formed on the substrate by plasma enhanced chemical vapor deposition using trimethylsilyl chloride and hexamethyldisilazane as a mixed gas, wherein X has a value range of 2.5 ⁇ 0.5, Y ranges from 2.0 to 0.5, and Z ranges from 8 to 2.
  • the mass ratio of trimethylchlorosilane to hexamethyldisiloxane in the mixed gas is 1:1 to 4:1.
  • the plasma enhanced chemical vapor deposition SiO X C Y H Z protective layer the pressure of the reaction chamber is maintained at 1200 mT to 1600 mT, and a high frequency alternating current power source of 5000w to 7500w is applied to the mixed gas, the temperature of the substrate Keep at 200 ° C ⁇ 400 ° C.
  • An advantageous effect of implementing the present invention is that the present invention achieves the purpose of isolating water vapor by depositing a protective layer outside the OLED device.
  • the protective layer is SiO X C Y H Z composed of an organic material/inorganic material, wherein X ranges from 2.5 to 0.5, Y ranges from 2.0 to 0.5, and Z ranges from 8 to 2.
  • This protective layer can achieve a water vapor transmission rate of 0.02 g/m 2 /day or less.
  • This protective layer can achieve better water vapor barrier effect at a thickness of 300A to 600A, which can save the raw material for preparing the protective layer and make the structure of the entire OLED device simple.
  • the preparation method of the OLED device provided by the invention has the advantages of simple process and convenient operation.
  • Depositing the protective layer on the OLED device body by magnetron sputtering coating or chemical deposition method can make the bonding of the protective layer and the OLED device more firm, thereby prolonging the service life and improving the quality of the OLED device.
  • FIG. 1 is a schematic structural view of an OLED device provided by the present invention.
  • the invention achieves the purpose of isolating water vapor by depositing a protective layer outside the OLED device.
  • the protective layer is SiO X C Y H Z composed of an organic material/inorganic material, wherein X ranges from 2.5 to 0.5, Y ranges from 2.0 to 0.5, and Z ranges from 8 to 2.
  • This protective layer can achieve a water vapor transmission rate of 0.02 g/m 2 /day or less.
  • This protective layer achieves better water vapor barrier when the thickness is between 300A and 600A.
  • the preparation method of the OLED device provided by the invention has the advantages of simple process and convenient operation. Depositing the protective layer on the OLED device body by magnetron sputtering coating or chemical deposition method can make the bonding of the protective layer and the OLED device more firm, thereby prolonging the service life and improving the quality of the OLED device.
  • an OLED device provided by the present invention includes an OLED device body 10 and a protective layer 20 overlying the OLED device body 10 for packaging the device body 10.
  • the OLED device body 10 includes a substrate 101 and a positive electrode and a TFT element layer 102, a transport layer 103, an organic light-emitting element layer 104, an electron transport layer 105, and a TFT layer 102, which are sequentially stacked on the substrate 101 in a direction away from the substrate 101.
  • the protective layer 20 extends in a direction away from the surface of the substrate 101 along the surface of the substrate 101 and covers the positive electrode and the TFT element layer 102, the transport layer 103, the organic light-emitting layer 104, the electron transport layer 105, and the negative electrode layer 106.
  • the substrate 101 is composed of Made of glass or soft acrylic material.
  • the protective layer is formed by magnetron sputtering or chemical vapor deposition.
  • the chemical formula of the protective layer is SiO X C Y H Z , wherein X ranges from 2.5 to 0.5, Y ranges from 2.0 to 0.5, and Z ranges from 8 to 2.
  • This protective layer can achieve a water vapor transmission rate of 0.02 g/m 2 /day or less.
  • the protective layer has a thickness of 300A to 600A.
  • the protective layer can achieve a better water vapor barrier effect at this thickness, which can save the raw material for preparing the protective layer and make the structure of the entire OLED device simple.
  • the thickness of the protective layer can be greater or less as desired.
  • the present invention provides a method of fabricating a preferred embodiment of an OLED device, comprising the steps of:
  • Providing the OLED device body as a substrate, pre-treating the substrate, the cleaning pre-processing includes the following steps:
  • the substrate was placed in an ultrasonic cleaner containing an acetone solution for ultrasonic cleaning to remove impurities, oil stains, and the like on the surface of the substrate.
  • the surface of the substrate subjected to the above pre-cleaning treatment is subjected to plasma cleaning to further remove the dirt on the surface of the substrate and to improve the bonding force between the surface of the substrate and the subsequent plating.
  • the substrate is placed in the coating chamber of the magnetron sputtering coating machine, and the mixed target is composed of Teflon and silicon oxide in a mass ratio of 4:1 to 3:1, and silicon oxide is a commonly used SiO x .
  • a bias voltage of ⁇ -500V causes high frequency voltage to be generated in the coating chamber.
  • Heating the temperature of the coating chamber to 150 ° C ⁇ 420 ° C that is, the sputtering temperature is 150 ° C ⁇ 420 ° C
  • the sputtering temperature is 150 ° C ⁇ 420 ° C
  • the substrate as the anode
  • the argon gas near the target is arc-discharged into Ar+ ions
  • the electric field is accelerated, extremely high energy is obtained and the mixed target is bombarded.
  • the atoms on the surface of the target are splashed out, and a protective layer of SiO X C Y H Z is deposited on the surface of the substrate.
  • the SiO X C Y H Z protective layer has a thickness of between 300 A and 600 A.
  • the time for depositing the SiO X C Y H Z protective layer may be from 20 min to 60 min.
  • Sputtered SiO X C Y H Z protective layer argon flow rate is 320sccm, substrate bias is -400V, sputtering temperature is 200 °C, sputtering time is 40 min, quality of Teflon and silica in mixed target The ratio was 4:1, and a protective layer of SiO 1.5 C 2 H 6 was formed, and the thickness of the protective layer was 500 A.
  • the water vapor permeability of the SiO 1.5 C 2 H 6 protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.
  • Sputtered SiO X C Y H Z protective layer argon flow rate is 400sccm, substrate bias is -300V, sputtering temperature is 150 °C, sputtering time is 20 min, quality of Teflon and silica in mixed target The ratio is 3:1, forming a protective layer of SiO 1 C 1 H 3 having a thickness of 300 ⁇ .
  • the water vapor permeability of the SiO 1 C 1 H 3 protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.
  • Sputtered SiO X C Y H Z protective layer argon flow rate is 500sccm, substrate bias is -500V, sputtering temperature is 420 °C, sputtering time is 60 min, quality of Teflon and silica in mixed target The ratio is 3.5:1, forming a protective layer of SiO 2.5 C 2 H 8 having a thickness of 600 ⁇ .
  • the water vapor permeability of the SiO 2.5 C 2 H 8 protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.
  • Sputtered SiO X C Y H Z protective layer argon gas flow rate is 300sccm, substrate bias voltage is -350V, sputtering temperature is 350 °C, sputtering time is 50 min, quality of Teflon and silica in mixed target The ratio was 3.8:1, and a protective layer of SiO 0.5 C 0.5 H 2 was formed, which had a thickness of 400 A.
  • the water vapor permeability of the SiO 0.5 C 0.5 H 2 protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.
  • the present invention also provides a method of fabricating another preferred embodiment of the OLED device, comprising the steps of:
  • Providing the OLED device body as a substrate, pre-treating the substrate, the cleaning pre-processing includes the following steps:
  • the substrate was placed in an ultrasonic cleaner containing an acetone solution for ultrasonic cleaning to remove impurities, oil stains, and the like on the surface of the substrate.
  • the surface of the substrate subjected to the above pre-cleaning treatment is subjected to plasma cleaning to further remove the dirt on the surface of the substrate and to improve the bonding force between the surface of the substrate and the subsequent plating.
  • Plasma Enhanced Chemical Vapor Deposition of SiO X C Y H Z Protective Layer The substrate is placed in a reaction chamber and heated to maintain the temperature of the substrate at 200 ° C to 400 ° C. Then, a mixed gas of trimethylchlorosilethane and hexamethyldisiloxane in a mass ratio of 1:1 to 4:1 is introduced into the reaction chamber. The pressure in the reaction chamber is maintained at 1200mT to 1600mT, and a high-frequency AC power source of 5000w to 7500w is applied to the mixed gas to provide high-frequency oscillating electrons. The electrons collide with gas molecules and form a plasma of the mixed gas. These plasmas react with each other or The surface material of the substrate reacts to form the protective layer.
  • Plasma-enhanced chemical vapor deposition SiO X C Y H Z protective layer The pressure in the reaction chamber is maintained at 1200 mT, and high-frequency oscillating electrons are supplied through a 5000 W high-frequency AC power source, and the electron-to-mass ratio is 1:1. A gas molecule of a mixed gas of methane and hexamethyldisiloxane collides, and then a protective layer of SiO 0.5 C 0.5 H 2 is formed on the substrate having a temperature of 200 ° C, and the thickness thereof is 400 ⁇ .
  • the water vapor permeability of the SiO X C Y H Z protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.
  • Plasma Enhanced Chemical Vapor Deposition SiO X C Y H Z Protective Layer The pressure in the reaction chamber is maintained at 1600 mT, and high-frequency oscillating electrons are supplied through a 7000 W high-frequency AC power source. The electron-to-mass ratio is 3:1 trimethyl chlorosilane. A gas molecule of a mixed gas of methane and hexamethyldisiloxane collides, and then a protective layer of SiO 1.2 C 2 H 6 is formed on a substrate having a temperature of 400 ° C, and has a thickness of 600 ⁇ . The water vapor permeability of the SiO 1.2 C 2 H 6 protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.
  • Plasma-enhanced chemical vapor deposition SiO X C Y H Z protective layer The pressure in the reaction chamber is maintained at 1300 mT, and high-frequency oscillating electrons are supplied through a 6000 W high-frequency AC power source, and the electron-to-mass ratio is 4:1 trimethyl chlorosilane. A gas molecule of a mixed gas of methane and hexamethyldisiloxane collides, and then a protective layer of SiO 2.5 C 2 H 8 is formed on the substrate at a temperature of 300 ° C, and has a thickness of 500 ⁇ .
  • the water vapor permeability of the SiO 2.5 C 2 H 8 protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.
  • Plasma Enhanced Chemical Vapor Deposition SiO X C Y H Z Protective Layer The pressure in the reaction chamber is maintained at 1250 mT, and high-frequency oscillating electrons are supplied through a 5500 W high-frequency AC power source. The electron-to-mass ratio is 3:1 trimethyl chlorosilane. A gas molecule of a mixed gas of methane and hexamethyldisiloxane collides, and then a protective layer of SiO 1 C 1 H 3 is formed on the substrate at a temperature of 250 ° C, and has a thickness of 300 ⁇ . The water vapor permeability of the SiO 1 C 1 H 3 protective layer prepared by the method of this example was kept below 0.02 g/m 2 /day.

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Abstract

一种OLED器件及其制备方法，其中该OLED器件包括OLED器件本体（10）以及包覆在OLED器件本体外部的、用于封装OLED器件本体（10）的保护层（20），保护层（20）的化学式为SiO XC YH Z，其中X的取值范围为2.5~0.5，Y的取值范围为2.0~0.5，Z的取值范围为8~2。通过在该OLED器件上形成SiO XC YH Z保护层（20），使得该OLED器件具有隔离水汽的功能。

Description

OLED 器件及其制备方法 技术领域
本发明涉及一种OLED器件及其制备方法，尤其涉及一种具有水汽隔离功能的OLED器件及其制备方法。
背景技术
近年来， 有机发光显示器（organic light emitting displaY ， OLED）由于其简单 的 结构 、 极佳的亮度 及显著 的优势，逐渐成为目前市场主流的 液晶显示器（liquid crYstalline displaY， LCD ） 的替代产品。
然而， 由于有机发光显示器 是 利用有机材料构成的发光元件作为显示发光光源， 所以在制作有机发光显示器的过程中， 对制程环境与使用场所的水汽 隔离程度 具有较高的 要求。 当水汽接触到有机发光元件时，将会使发光元件的阴极氧化 ，使得 发光元件失去显示功能， 从而 出现 降低产品质量 。
因此，有机发光元件需要采用具有较低水汽穿透率的材料进行封装，以实现将有机发光元件与外界环境的水汽相隔离，进而提高产品质量。
发明内容
本发明的目的在于，针对现有技术中存在的OLED器件在制备过程中易接触到水汽的缺陷，提供一种具有水汽隔离功能的OLED器件及其制备方法。
本发明提供的一种OLED器件，包括OLED器件本体以及包覆在所述OLED器件本体外部的、用于封装所述OLED器件本体的保护层，所述保护层的化学式为SiOXCYHZ ，其中X的取值范围为2.5 ～ 0.5 ，Y的取值范围为2.0 ～ 0.5 ，Z的取值范围为8 ～ 2 。
上述的OLED器件，所述保护层的厚度为300 A ～ 600A 。
本发明还提供一种OLED器件的制备方法，包括：
提供OLED器件本体作为基体；
以铁氟龙和氧化硅为混合型靶材，采用磁控溅射镀膜法在所述基体上形成SiOXCYHZ保护层，其中X的取值范围为2.5 ～ 0.5 ，Y的取值范围为2.0 ～ 0.5 ，Z的取值范围为8 ～ 2 。
上述的制备方法，所述混合型靶材中铁氟龙与氧化硅的质量比为4:1 ～ 3:1 。
上述的制备方法，磁控溅射镀SiOXCYHZ保护层，对所述基体设置-300V～-500V 的偏压，溅镀温度为150℃ ～ 420 ℃，以氩气为工作气体，氩气的流量为300sccm ～ 500sccm ，溅镀时间为20min ～ 60 min 。
本发明还提供另一种OLED器件的制备方法，包括：
提供OLED器件本体作为基体；
以三甲基氯硅甲烷和六甲基二硅胺为混合气体，采用等离子体增强化学气相沉积法在所述基体上形成SiOXCYHZ保护层，其中X的取值范围为2.5 ～ 0.5 ，Y的取值范围为2.0 ～ 0.5 ，Z的取值范围为8 ～ 2 。
上述的制备方法，所述混合气体中三甲基氯硅甲烷和六甲基二硅的质量比为1:1 ～ 4:1 。
上述的制备方法，等离子体增强化学气相沉积SiOXCYHZ保护层，反应室的压力保持在1200mT ～ 1600mT ，向所述混合气体施加5000w ～ 7500w 的高频交流电源，所述基体的温度保持在200℃ ～ 400 ℃。
实施本发明的有益效果在于：本发明通过在OLED器件外沉积一保护层以实现隔离水汽的目的。该保护层是由有机材料/无机材料构成的SiOXCYHZ，其中X的取值范围为2.5 ～ 0.5 ，Y的取值范围为2.0 ～ 0.5 ，Z的取值范围为8 ～ 2 。这种保护层能达到水汽穿透率保持在0.02g/m2/day以下。这个保护层在厚度为300A ～ 600A 时就能实现较佳的水汽隔离效果，这可以实现制备保护层的原材料的节约以及使整个OLED器件的结构简单。
进一步地，本发明提供的OLED器件的制备方法具有工艺简单、便于操作的优势。利用磁控溅射镀膜法或化学沉积法在该OLED器件本体上沉积该保护层，可以使得保护层与OLED器件的结合更加牢固，从而延长其使用寿命，提高OLED器件的质量。
附图说明
下面将结合附图及实施例对本发明作进一步说明，附图中：
图1为本发明提供的OLED器件的结构示意图。
具体实施方式
本发明通过在OLED器件外沉积一保护层以实现隔离水汽的目的。该保护层是由有机材料/无机材料构成的SiOXCYHZ，其中X的取值范围为2.5 ～ 0.5 ，Y的取值范围为2.0 ～ 0.5 ，Z的取值范围为8 ～ 2 。这种保护层能实现水汽穿透率保持在0.02g/m2/day以下。这个保护层在厚度为300A ～ 600A 时就能实现较佳的水汽隔离效果。本发明提供的OLED器件的制备方法具有工艺简单、便于操作的优势。利用磁控溅射镀膜法或化学沉积法在该OLED器件本体上沉积该保护层，可以使得保护层与OLED器件的结合更加牢固，从而延长其使用寿命，提高OLED器件的质量。
参考图1，本发明提供的OLED器件包括OLED器件本体10和包覆在OLED器件本体10外部的、用于封装该器件本体10的保护层20。
该OLED器件本体10包括基板101以及沿基板101朝向远离该基板101的方向上依次层叠设置在基板101上的正极及TFT元件层102、传输层103、有机发光件层104、电子传输层105以及负极层106。保护层20沿着所述基板101的表面向远离该基板101的表面方向延伸并包覆该正极及TFT元件层102、传输层103、有机发光件层104、电子传输层105以及负极层106。该基板101是由 玻璃或软质亚克力材料制成。该保护层是以磁控溅射镀膜法或化学气相沉积法形成。
该保护层的化学式为 SiOXCYHZ ，其中X的取值范围为2.5 ～ 0.5 ，Y的取值范围为2.0 ～ 0.5 ，Z的取值范围为8 ～ 2 。 这种保护层能实现水汽穿透率保持在0.02g/m2/day以下。
该保护层的厚度为 300A ～ 600A ， 该保护层在这个厚度时就能实现较佳的水汽隔离效果，这可以实现制备保护层的原材料的节约以及使整个OLED器件的结构简单。当然，在其他的实施例中，该保护层的厚度可以根据需要达到更大值或更小值。
本发明提供一种较佳实施方式的 OLED器件 的制备方法，包括以下步骤：
提供OLED器件本体作为基体，对基体进行前处理，该清洁前处理包括以下步骤：
依次用去离子水及无水乙醇对基体的表面进行擦拭；
将基体放入盛装有丙酮溶液的超声波清洗器中进行超声波清洗，以除去基体表面的杂质和油污等。
对经上述清洁前处理后的基体的表面进行等离子体清洗，以进一步去除基体表面的脏污，以及改善基体表面与后续镀层的结合力。
将基体放入磁控溅射镀膜机的镀膜室中，装入铁氟龙和氧化硅按质量比为4:1 ～ 3:1 组成混合靶材，氧化硅为常用的SiOx。抽真空该镀膜室至本底真空度为3.0×10-5Torr，然后通入流量为300sccm ～ 500sccm( 标准毫升每分) 的工作气体氩气( 纯度为99.999％ )，并对基体施加-300V～-500V 的偏压，使镀膜室中产生高频电压。加热镀膜室的温度至150℃ ～ 420 ℃（即溅镀温度为150℃ ～ 420 ℃），以混合靶材为阴极，以基体为阳极， 靶材附近的氩气产生弧光放电成Ar+离子，在电场加速下获得极高的能量并轰击混合靶材 ，靶材表面的原子被溅击出来， 于基体的表面沉积 SiOXCYHZ 保护层 。该 SiOXCYHZ 保护层 厚度在 300 A ～ 600A 之间。沉积 该 SiOXCYHZ 保护层 的时间可为 20 min ～ 60 min。
实施例 1
溅镀 SiOXCYHZ 保护层 ：氩气流量为 320sccm ，基体的偏压为 -400V ，溅镀温度为 200 ℃，溅镀时间为 40 min ， 混合靶材中铁氟龙和氧化硅的质量比为4:1，形成SiO1.5C2H6保护 层， 保护层厚度为500A 。
按本实施例方法所制得的 SiO1.5C2H6保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
实施例 2
溅镀 SiOXCYHZ 保护层 ：氩气流量为 400sccm ，基体的偏压为 -300V ，溅镀温度为 150 ℃，溅镀时间为 20 min ， 混合靶材中铁氟龙和氧化硅的质量比为3:1，形成SiO1C1H3的保护层，其厚度为300A。
按本实施例方法所制得的 SiO1C1H3保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
实施例 3
溅镀 SiOXCYHZ 保护层 ：氩气流量为 500sccm ，基体的偏压为 -500V ，溅镀温度为 420 ℃，溅镀时间为 60 min ， 混合靶材中铁氟龙和氧化硅的质量比为3.5:1，形成SiO2.5C2H8的保护层，其厚度为600A。
按本实施例方法所制得的 SiO2.5C2H8保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
实施例4
溅镀 SiOXCYHZ 保护层 ：氩气流量为 300sccm ，基体的偏压为 -350V ，溅镀温度为 350 ℃，溅镀时间为 50 min ， 混合靶材中铁氟龙和氧化硅的质量比为3.8:1，形成SiO0.5C0.5H2的保护层，其厚度为400A。
按本实施例方法所制得的 SiO0.5C0.5H2保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
本发明还提供另一种较佳实施方式的OLED器件的制备方法，包括以下步骤：
提供OLED器件本体作为基体，对基体进行前处理，该清洁前处理包括以下步骤：
依次用去离子水及无水乙醇对基体的表面进行擦拭；
将基体放入盛装有丙酮溶液的超声波清洗器中进行超声波清洗，以除去基体表面的杂质和油污等。
对经上述清洁前处理后的基体的表面进行等离子体清洗，以进一步去除基体表面的脏污，以及改善基体表面与后续镀层的结合力。
等离子体增强化学气相沉积SiOXCYHZ保护层：将基体放入反应室中，加热使基体的温度保持在200℃ ～ 400 ℃。然后向反应室中通入质量比为1:1 ～ 4:1 的三甲基氯硅甲烷和六甲基二硅的混合气体。反应室的压力保持在1200mT ～ 1600mT ，向混合气体施加5000w ～ 7500w 的高频交流电源以提供高频振荡电子，电子与气体分子产生碰撞并使混合气体形成等离子体，这些等离子体相互反应或与基体表面材料反应形成该保护层。
实施例5
等离子体增强化学气相沉积SiOXCYHZ保护层：反应室的压力保持在1200mT，通过5000w的高频交流电源提供高频振荡电子，电子与质量比为1:1的三甲基氯硅甲烷和六甲基二硅的混合气体的气体分子碰撞，然后在温度为200℃的基体上形成SiO0.5C0.5H2的保护层，其厚度为400A。 按本实施例方法所制得的 SiOXCYHZ 保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
实施例6
等离子体增强化学气相沉积SiOXCYHZ保护层：反应室的压力保持在1600mT，通过7000w的高频交流电源提供高频振荡电子，电子与质量比为3:1的三甲基氯硅甲烷和六甲基二硅的混合气体的气体分子碰撞，然后在温度为400℃的基体上形成SiO1.2C2H6的保护层，其厚度为600A。 按本实施例方法所制得的 SiO1.2C2H6 保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
实施例7
等离子体增强化学气相沉积SiOXCYHZ保护层：反应室的压力保持在1300mT，通过6000w的高频交流电源提供高频振荡电子，电子与质量比为4:1的三甲基氯硅甲烷和六甲基二硅的混合气体的气体分子碰撞，然后在温度为300℃的基体上形成 SiO2.5C2H8 的保护层，其厚度为500A。 按本实施例方法所制得的 SiO2.5C2H8保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
实施例8
等离子体增强化学气相沉积SiOXCYHZ保护层：反应室的压力保持在1250mT，通过5500w的高频交流电源提供高频振荡电子，电子与质量比为3:1的三甲基氯硅甲烷和六甲基二硅的混合气体的气体分子碰撞，然后在温度为250℃的基体上形成 SiO1C1H3 的保护层，其厚度为300A。 按本实施例方法所制得的 SiO1C1H3保护 层 的 水汽穿透率保持在0.02g/m2/day以下 。
应当理解的是，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，而所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (8)

  1. 一种OLED器件，包括OLED器件本体以及包覆在所述OLED器件本体外部的、用于封装所述OLED器件本体的保护层，其中，所述保护层的化学式为SiOXCYHZ ，其中X的取值范围为2.5 ～0.5，Y的取值范围为2.0～0.5，Z的取值范围为8～2。
  2. 根据权利要求1所述的OLED器件，其中，所述保护层的厚度为300 A ～600A。
  3. 一种OLED器件的制备方法，其中，包括：
    提供OLED器件本体作为基体；
    以铁氟龙和氧化硅为混合型靶材，采用磁控溅射镀膜法在所述基体上形成SiOXCYHZ保护层，其中X的取值范围为2.5 ～0.5，Y的取值范围为2.0～0.5，Z的取值范围为8～2。
  4. 根据权利要求3所述的制备方法，其中，所述混合型靶材中铁氟龙与氧化硅的质量比为4:1 ～3:1。
  5. 根据权利要求4所述的制备方法，其中，磁控溅射镀SiOXCYHZ保护层，对所述基体设置 -300 V ～-500V 的偏压，溅镀温度为150℃～420℃，以氩气为工作气体，氩气的流量为300sccm～500sccm，溅镀时间为20min～60min。
  6. 一种OLED器件的制备方法，其中，包括：
    提供OLED器件本体作为基体；
    以三甲基氯硅甲烷和六甲基二硅胺为混合气体，采用 等离子体增强化学气相沉积法在所述基体上形成SiOXCYHZ保护层，其中X的取值范围为2.5～0.5，Y的取值范围为2.0～0.5，Z的取值范围为8～2。
  7. 根据权利要求6所述的制备方法，其中，所述混合气体中三甲基氯硅甲烷和六甲基二硅的质量比为1:1 ～4:1。
  8. 根据权利要求6所述的制备方法，其中，等离子体增强化学气相沉积SiOXCYHZ保护层，反应室的压力保持在1200mT～1600mT，向所述混合气体施加5000w～7500w的高频交流电源，所述基体的温度保持在200℃～400℃。
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