CN102983149A - Production method for double-sided light-emitting OLED display screen - Google Patents

Production method for double-sided light-emitting OLED display screen Download PDF

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CN102983149A
CN102983149A CN2011102595747A CN201110259574A CN102983149A CN 102983149 A CN102983149 A CN 102983149A CN 2011102595747 A CN2011102595747 A CN 2011102595747A CN 201110259574 A CN201110259574 A CN 201110259574A CN 102983149 A CN102983149 A CN 102983149A
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light emitting
anode
cathode
opaque
substrate
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CN2011102595747A
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潘俊生
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江苏东林电子有限公司
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Abstract

The present invention relates to a production method for a double-sided light-emitting OLED display screen. A same glass substrate is divided into at least two light emitting zones, and the anode of each light emitting zone is located on the same glass substrate; wherein a transparent electrode is used as the anode in one of the light emitting zone, while an opaque electrode is used as a cathode; an opaque metal is used as the anode, while an opaque electrode is used as a cathode in another light emitting zone; and an opaque metal is used as the anode, while a semi-transparent electrode or a transparent electrode is used as a cathode in another light emitting zone; and various organic material function layers are arranged between the corresponding anode and cathode, and each of the anodes in the same glass substrate controls the corresponding cathode separately, to achieve independent driving and light emitting of each light emitting zone. The method of the present invention is characterized by independent drive, independent light-emitting and flexibility.

Description

双面发光OLED显示屏制作方法 The method of making a dual-emission OLED display

技术领域 FIELD

[0001] 本发明涉及光电子器件领域,具体涉及双面发光OLED显示屏制作方法。 [0001] The present invention relates to the field of optoelectronic devices, particularly relates to a method for manufacturing a double-sided light emitting OLED display. 背景技术 Background technique

[0002] 有机电致发光器件OLED作为一种新产品,和现在主要的平板显示器产品液晶相t匕,拥有很多优点并具有很强的竞争力,极有可能成为下一代平板显示器的主流产品,有机电致发光器件的一般结构是一种类似三明治结构的薄膜器件,其上、下分别是负、正电极(对应的也称之为上电极和下电极),大多数有机电致发光器件使用透明的ITO薄膜作为正电极,光从这一侧发出来,并且以刚性或柔性基板如玻璃、塑料、不锈钢片等作为ITO薄膜和有机材料、上电极的支撑衬底;上电板一般采用具有反射功能的金属膜作为负电板,二电极之间夹着单层或多层不同材料种类和不同结构的有机材料功能层,依次为空洞注入层、空洞传输层、发光层、电子传输层、电子注入层。 [0002] The organic electroluminescent device OLED as a new product, and now the main phase crystal flat panel display products t dagger, has many advantages and in highly competitive, is likely to become the next mainstream flat panel display, We have a general structure of the organic electroluminescent device is a thin film device similar to a sandwich structure, which upper and lower are negative, the positive electrode (also referred to as the corresponding upper and lower electrodes), most of the organic electroluminescent device using transparent ITO film is used as the positive electrode, light emitted from one side to, and in a rigid or flexible substrate such as glass, plastic, stainless steel sheet or the like and an organic material as the ITO film, an upper electrode support substrate; an upper plate having the general reflective metal film functions as the negative plate, different materials types and functional organic material layers having different structures between the two electrodes sandwiching a single layer or multiple layers, hole injection layer followed, empty transport layer, emission layer, electron transport layer, an electron injection layer. 有机电致发光器件是电注入形发光组件,在正电极和负电极加上工作电压之后,空穴从正电极,电子从负电极注入到工作器件有机材料层中,两种载流子在有机发光材料中形成空穴--电子对发光,且光从下电极一侧发出。 The organic electroluminescent device is an electrical injection type light-emitting components, after the positive electrode and the negative electrode operation voltage is applied, holes are injected from the positive electrode, electrons from the negative electrode to the organic material layer in the device work, both carriers in the organic luminescent material to form a hole - for emitting electrons, and the light emitted from the lower electrode side.

[0003] 目前,市场上的产品基本都是以下发光显示屏为主,若OLED显示屏能同时满足两面通过独立驱动实现分别独立发光,则会大大提高OLED显示屏产品附加价值。 [0003] Currently, the products on the market are basically the main light-emitting display, if the OLED display can simultaneously satisfy both sides by separate drive independently to achieve light, will greatly enhance the added value of OLED display products. 因而,各研发机构和团体都先后对双面发光显示屏进行了研究,取得了一定的成果。 Thus, various research and development institutions and groups have double-sided light emitting displays have been studied, and achieved certain results.

[0004] 因此研发一种既可以实现双面发光功能,又不增加制成本的设计是有意义的。 [0004] Therefore the development of a double-sided light emitting function may be implemented without increasing the cost of system design is significant.

发明内容 SUMMARY

[0005] 本发明的目的是提出一种双面发光OLED显示屏制作方法。 [0005] The object of the present invention is to provide a method for manufacturing a double-sided light emitting OLED display.

[0006] 为了实现上述目的,本发明在同一玻璃基板至少分成了两个发光区域,每个发光区阳极位于同一玻璃基板上,其中一个发光区采用透明的电极作为阳极,采用不透光的电极作为阴极;另一个发光区采用不透明的金属作这阳极,采用不透光的电极作为阴极•'另一个发光区采用不透明的金属作为阳极,采半透光或透光的电极作为阴极;对应阴阳电极之间设置各个有机材料功能层,位于同一玻璃基板的阳极各自控制对应的阴极,实现各个发光区域独立驱动,独立发光。 [0006] To achieve the above object, the present invention is the same in the glass substrate into at least two light emitting regions, each of the light emitting region of the anode on the same glass substrate, wherein a light emitting region of the transparent electrode as an anode, the electrode using opaque a cathode; another light emitting region made of an opaque metal as anode which, using as a cathode electrode opaque • 'another light emitting region made of an opaque metal as an anode, a light-transmitting or semi-transparent electrode taken as a cathode; yin and yang corresponding to the organic functional layers each disposed between the electrode material, an anode in the same glass substrate corresponding to each of the control cathode, each light emitting area achieved independently driven independently illuminated.

[0007] 双面发光OLED显示屏的制作方法,包括以下步骤: [0007] A method of manufacturing a double-sided light emitting OLED display, comprising the steps of:

1、采用透光材料的衬底,在衬底上面覆盖一层透明导电薄膜,然后再覆盖一层不透光的金属电极,形成基板;在基板上酸刻一部分不透光的金属; 1, the substrate using a light-transmitting material, covered with a transparent conductive thin film over a substrate and then covered with a layer of opaque metal electrodes, forming substrate; acid engraved on the substrate not part of an opaque metal;

2、酸刻出阳极图案,暴露出的透明导电薄膜区作为一个发光的阳极,其余的不透光的金属区作为另一个发光区的阳极; 2, anode patterns engraved acid, a transparent conductive thin film exposed as a light emitting region of the anode, the remaining opaque metal as an anode region of another light emitting region;

3、在基板上同时依次增镀各个有机材料功能层; 3, while sequentially on the substrate by plating each functional organic material layer;

4、分别在对应透明导电薄膜区蒸镀一层不透光的阴极,对就不透光的金属区蒸镀一层半透明或透明的阴极后,封装。 4, respectively, in the corresponding region of the transparent conductive film deposited opaque layer of a cathode, a metal vapor deposition layer of the light-transmitting region is not translucent or transparent cathode package.

[0008] 本发明采用一个芯片,对各个发光显示屏分别独立驱动、独立发光,而且显示发光区域的分布根据产品的要求,可以灵活多变。 [0008] The present invention uses a chip for each of the light emitting display driven independently, independent emission, and light emission distribution of the display area according to the requirements of the product, can be flexible. 十分适用于手机主屏和副屏,或者其它需要双面显示功能的显示屏。 Very suitable for mobile phone main and secondary displays, or other needs double-sided display screen.

附图说明 BRIEF DESCRIPTION

[0009] 图I是双面发光OLED显示屏的平面视图: [0009] Figure I is a plan view of a double-sided light emitting OLED display:

图2是双面发光OLED显示屏的截面图; FIG 2 is a sectional view of a double-sided light emitting OLED display;

图3是透明ITO电极区的OLED器件结构; Figure 3 is an OLED device structure ITO transparent electrode region;

图4是不透光金属电极区OLED器件结构; FIG 4 is an opaque OLED device structure of the metal electrode region;

图5是本发明的发光区域分布实施例一的平面视图; FIG 5 is a light-emitting region according to the present invention, a plane view of a distribution of the embodiment;

图6是本发明的发光区域分布实施例二的平面视图。 FIG 6 is a light-emitting region distribution plan view of the present invention according to a second embodiment. ·具体实施方式 ·Detailed ways

[0010] 如图I所不,一种双面发光OLED显不屏,在玻璃基板上分布了两个区域,分别对应下发光区和上发光区,采用透明的ITO电极作为下发光区OLED器件的阳极,透明阳极还可以用ΑΖ0,半透明金属薄膜及高分子有机膜,采用不透光的电极作为下发光区OLED器件的阴极,实现下发光,不透光阴极主要是利用电子注入的一些低功函数的金属材料,如Al、Mg :Ag或Ca、Ba等。 [0010] FIG. I do not, a double-sided light emitting OLED screen is not significant, distributed in two regions on a glass substrate, respectively corresponding to the light emitting region and the light emitting region, a transparent ITO electrode under the light emitting region of the OLED device the anode can be a transparent anode further ΑΖ0, semitransparent metal thin films and organic polymer used as the opaque cathode electrode under the light emitting region of the OLED device, to achieve lower emission, mainly using opaque cathode electron injecting some metallic material having a low work function, such as Al, Mg: Ag or Ca, Ba and the like. 采用不透明的金属作为上发光区OLED器件的阳极,不透光阳极为高功函数的金属材料,如Cr、Ag、Cu、Au、Pt、Mo等;采用半透光或透光的电极作为上发光区OLED器件的阴极,实现上发光。 An opaque metal as the anode of the light emitting region of the OLED device, the anode is opaque metal material having a high work function, such as Cr, Ag, Cu, Au, Pt, Mo and the like; semi-translucent or translucent electrode as the cathodoluminescent area OLED device, the light emitting achieved. 上述的OLED器件可以为普通结构器件,PII结构器件,PIN结构器件或者Stacked结构器件。 The above-described conventional structure OLED device may be a device, PII structure of the device, PIN Stacked structure of the device or structure of the device. 两个阳极即下发光区透明ITO电和上发光区不透明的电极位于同一个基板上,分别控制下发光区的不透光阴极和上发光区的透光阴极,实现双面发光。 I.e., the anode electrodes of the two light emitting areas of the transparent ITO electrodes and the upper light emitting region is located on the same transparent substrate, a cathode, respectively, under the control of the light-transmitting opaque cathode on the light emitting region and the light-emitting region, double-side light emission.

[0011] 上述不透明或透明阴极为两种金属材料组成的两层复合电极结构,为了利于电子的注入,首先增镀一层相对薄的、透明的低功函数的金属,如Al,然后再增镀一层透明的或半透明的金属如Ag作为辅助电极,目的是减小电极的电阻。 [0011] The cathode is a transparent or opaque composite electrode two-layer structure consisting of two metal materials, in order to facilitate electron injection, by first plating a relatively thin, transparent low work function metal, such as Al, then soared plating a transparent or semi-transparent metal such as Ag as the auxiliary electrode, the aim to reduce the resistance of the electrode.

[0012] 为了使下发光区和上发光区分隔清晰,在两发光区平面之间设置一个图案隔离区30,因为下发光区和上发光区的阴极是分别独立蒸镀完成的,所以可以通过设计镀膜档板实现;图案隔离区可以使用高电率的、不透光的光刻胶保护,减小下发光区和上发光区在驱动时的漏电流。 [0012] In order to make the light emitting region and the light emitting region separated clearly, a pattern of isolation region 30 is provided between the two plane light emitting region, since the cathode and the light emitting region over the light emitting regions are each independently of the deposition is completed, it can be coating baffle design implemented; isolation region may be patterned using a high power rate, opaque photoresist protection, reduced leakage current on the light emitting region and the light emitting region at the time of driving.

[0013] 如图2所示,表征了基板的基本组成结构,有衬底10、透明电极11和不透明金属电极20三部分组成。 [0013] As shown in FIG 2, characterized by the basic structures of the substrate, with a substrate 10, a transparent electrode 11 and an opaque metal electrode 20 consisting of three parts. 如图3、图4所示,透明ITO阳极区的OLED器件结构包括玻璃衬底10,置于衬底上的透明ITO阳极11,置于阳极上的空洞注入层12,置于空洞注入层上的空洞传输层13,置于空洞传输层上的发光层14,置于发光层上的电子传输层15,置于电子传输层上的电子注入层16,置于电子注入层上面的阴极17,不透光的金属阳极区的OLED器件结构包括作为阳极的不透明电极,置于阳极上的空洞注入层12,置于空洞注入层上的空洞传输层13,置于空洞传输层上的发光层14,置于发光层上的电子传输层15,置于电子传输层上的电子注入层16,置于电子注入层上面的阴极18。 3, FIG. 4, a transparent ITO anode region of the OLED device structure 10 comprising a glass substrate, a transparent ITO anode disposed on the substrate 11, the hole injection layer 12 disposed on the anode, hole injection layer disposed cavity transport layer 13, a luminescent layer disposed on the hole transport layer 14, the electron transport layer disposed on the light emitting layer 15, electron injection layer disposed on the electron transport layer 16, a cathode 17 disposed above the electron injection layer, OLED device structure of the metal anode region includes a light-tight opaque anode electrode, disposed on the anode hole injection layer 12, hole transport layer 13 disposed on the hole injection layer, a luminescent layer disposed on the hole transport layer 14 , an electron transport layer disposed on the light emitting layer 15, electron injection layer disposed on the electron transport layer 16, a cathode 18 disposed above the electron injection layer. 其中透明ITO电极区的电子层上的阴极17是不透光的,面置于不透光金属阳极区的电子注入层的阴极18却是透明或半透明的,两者是分别独立制作完成的,通过调节两者的不同膜厚来调节光的透过率,制作时,两对阴阳极之间的上述各有机功能层可以同时依次增镀。 Wherein the cathode electron layer ITO transparent electrode region 17 is opaque, the surface of the cathode electron injecting layer is disposed opaque metal anode region 18 is transparent or translucent, are independent both of the finished to adjust light transmittance by adjusting the thickness of the two different, when creating, between two pairs of anode and cathode each of the organic functional layer may be coated simultaneously by sequentially. [0014] 制作时在同一基板上还可以设置多对阴阳极结构,使发光OLED显示屏中的独立发光区域的分布可以灵活多变(如图5),以满足具体产品设计的各种需要,各发光面独立发光,独立驱动,可以制作单色、双色、三色甚至全彩显示屏。 [0014] On the same substrate may also be provided a plurality of pairs of cathode and anode structure when creating the distributed independent light emitting regions emitting OLED display may be flexible (FIG. 5), in order to meet various needs of a particular product design, each independently emitting light emitting surface, independently driven, creates a monochrome, two-color, three-color or even full color display. 图6中在显示屏中另外设置一个背景光源或信息显示背景灯,使显示屏发光区域的分布更加丰富。 FIG 6 is additionally provided in the display background light or a backlight display information, the display screen so that the distribution of the light emitting region richer.

[0015] 上述双面发光OLED显示屏的详细制作过程,主要包括以下步骤: [0015] Detailed production process double-sided light emitting OLED display, including the steps of:

1、采用玻璃透明衬底,在衬底上面覆盖一层透明ITO导电薄膜,然后现覆盖一层不透光的Ag金属薄膜,形成基板; 2、基板经过前清洗,旋涂一层光刻胶,固化、曝光、显影以后,在基板上酸刻部分不透光的Ag金属薄膜; 1, a transparent glass substrate, covered with a transparent ITO conductive film over a substrate, then covering the Ag metal thin film layer is now opaque, the substrate is formed; 2, after the substrate before cleaning, spin coating a layer of photoresist , curing, exposure, after the development, the substrate acid engraved portion Ag metal thin film opaque;

3、然后再经过前清洗,旋涂一层光刻胶,固化、曝光、显影后,酸刻出条形阳极图案;暴露出的透明ITO导电薄膜区作为一个下发光区的阳极,其作的不透光的Ag金属区作为上发光区的阳极; 3, and then cleaned again before, a layer of photoresist spin coating, curing, exposure and after development, acid anode patterns engraved stripe; ITO transparent conductive film as an anode region exposed at a light emitting region, for which the opaque metal regions as Ag on the anode of the light emitting region;

4、制作阴极隔离柱; 4, spacers made cathode;

5、采用相同的掩膜板在基板上同时依次蒸镀空洞注入层、空洞传输层、发光层、电子传输层、电子注入层这些有机材料功能层; 5, using the same mask while sequentially deposited on the substrate hole injection layer, hole transport layer, emission layer, electron transport layer, an electron injection layer, an organic material such functional layers;

6、最后,采用不同的掩膜板分别在对应于透明导电薄膜区蒸镀一层不透光的阴极,对应于不透光的Ag金属区蒸镀一层透明的阴极后,封装。 6, finally, are different in the mask corresponding to the region of the transparent conductive film deposited opaque layer of a cathode, corresponding to the opaque regions of the Ag metal vapor deposition layer of transparent cathode package.

[0016] 另外,在对应不透光的金属区也可以蒸镀一层半透明阴极,蒸镀后在半透明阴极上可再蒸镀一层用于减少电极电阻的透明电极。 [0016] Further, in the region corresponding to the opaque metal layer of translucent cathode may be deposited after deposition on the semitransparent cathode layer may be further deposited a transparent electrode to reduce the electrode resistance. 或在半透明阴极上现蒸镀一层用来减少微共振腔效应的SiNx薄膜。 Or on the semitransparent cathode layer is now deposited SiNx film used to reduce the effect of the micro cavity.

[0017] 虽然以上对本发明采用举例的形式进行了具体制描述,但是本领域的一般技术人员应该懂得,这些公开的内容只是作为例子,在不脱离本发明的精神和范围的前提下,可以在各部分的细节上作许多类同的改变。 [0017] While the above use for example in the form of the present invention has been specifically prepared as described, but those skilled in the art should appreciate that such disclosure is only by way of example, without departing from the spirit and scope of the present invention, it may be details on each part as many similar changes.

Claims (1)

1.双面发光OLED显示屏制作方法,它在同一玻璃基板至少分成了两个发光区域,每个发光区阳极位于同一玻璃基板上,其中一个发光区采用透明的电极作为阳极,采用不透光的电极作为阴极;另一个发光区采用不透明的金属作这阳极,采用不透光的电极作为阴极;另一个发光区采用不透明的金属作为阳极,采半透光或透光的电极作为阴极;对应阴阳电极之间设置各个有机材料功能层,位于同一玻璃基板的阳极各自控制对应的阴极,实现各个发光区域独立驱动,独立发光;其特征在于包括以下步骤: (1)采用透光材料的衬底,在衬底上面覆盖一层透明导电薄膜,然后再覆盖一层不透光的金属电极,形成基板;在基板上酸刻一部分不透光的金属; (2)酸刻出阳极图案,暴露出的透明导电薄膜区作为一个发光的阳极,其余的不透光的金属区作为另一个发光区 1. The double-sided light emitting OLED display manufacturing method, the same glass substrate, it is divided into at least two light emitting regions, each of the light emitting region of the anode on the same glass substrate, wherein a light emitting region of the transparent electrode as an anode, light-tight a cathode electrode; another light emitting region made of an opaque metal as anode which, using as a cathode electrode is opaque; another light emitting region made of an opaque metal as an anode, semi-transparent or translucent collection electrode as a cathode; corresponding to is provided between the organic material cathanode various functional layers, the anode of the same glass substrate corresponding to each of the control cathode, each light emitting area achieved independently driven, independently illuminable; characterized by comprising the steps of: (1) a light-transmitting substrate material , the substrate covered with a transparent conductive film, and then covered with a layer of opaque metal electrodes, forming substrate; the substrate on the opaque portion of the acid engraved metal; (2) an acid engraved anode patterns, exposing a transparent conductive thin film as a light emitting region of the anode, the remaining opaque metal regions as another light emitting region 阳极; (3)在基板上同时依次增镀各个有机材料功能层; (4)分别在对应透明导电薄膜区蒸镀一层不透光的阴极,对就不透光的金属区蒸镀一层半透明或透明的阴极后,封装。 An anode; (3) while sequentially on a substrate by plating each of the organic functional layer material; (4) respectively corresponding to the transparent conductive thin film deposition zone of the cathode layer of opaque, translucent metal evaporation layer region not after a transparent or translucent cathode package.
CN2011102595747A 2011-09-05 2011-09-05 Production method for double-sided light-emitting OLED display screen CN102983149A (en)

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WO2018090440A1 (en) * 2016-11-17 2018-05-24 武汉华星光电技术有限公司 Two-sided amoled display

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CN1901218A (en) * 2006-07-25 2007-01-24 信利半导体有限公司 Double side luminous OLED display screen and its producing method
CN101123302A (en) * 2006-08-07 2008-02-13 中华映管股份有限公司 Dual-side luminescent type organic LED and its making method

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CN1901218A (en) * 2006-07-25 2007-01-24 信利半导体有限公司 Double side luminous OLED display screen and its producing method
CN101123302A (en) * 2006-08-07 2008-02-13 中华映管股份有限公司 Dual-side luminescent type organic LED and its making method

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WO2018090440A1 (en) * 2016-11-17 2018-05-24 武汉华星光电技术有限公司 Two-sided amoled display
CN107657922A (en) * 2017-10-27 2018-02-02 朱秋华 Double-surface OLED display panel and device thereof

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