CN100433358C - Double-side displaying apparatus - Google Patents

Double-side displaying apparatus Download PDF

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CN100433358C
CN100433358C CN 200510022930 CN200510022930A CN100433358C CN 100433358 C CN100433358 C CN 100433358C CN 200510022930 CN200510022930 CN 200510022930 CN 200510022930 A CN200510022930 A CN 200510022930A CN 100433358 C CN100433358 C CN 100433358C
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double
display device
light emitting
substrate
protective layer
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CN 200510022930
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CN1815748A (en
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胡闵杰
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友达光电股份有限公司
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Abstract

本发明公开了一种双面显示装置,其包括基板,其上表面设有第一有机发光二极管,其下表面设有第二有机发光二极管。 The present invention discloses a double-sided display device, which includes a substrate, a first surface on which the organic light emitting diode, a lower surface provided with a second organic light emitting diode. 该第一有机发光二极管与该第二有机发光二极管分别以第一保护层与第二保护层覆盖以隔绝水汽及氧气。 The first organic light emitting diode OLED and the second respectively the first and the second protective layer covers the protective layer to isolate the water vapor and oxygen.

Description

双面显示装置技术领域本发明关于一种双面显示装置,特别是关于一种具有单一基板的双面有机电致发光显示装置。 Double-side display device FIELD The present invention relates to a double-sided display device, particularly to a double-sided substrate having a single organic electroluminescent display device. 背景技术电子产品的形式渐趋多样化,双面显示功能成为新一代电子产品的主要特色。 BACKGROUND form of electronic products become more diversified, double-sided display has become the main features of the new generation of electronic products. 例如,手机内部的双面显示装置可以一面显示手机主功能窗口,另一面显示时间。 For example, the phone's internal side of the double-sided display device may display the main menu window of the phone, the other surface of the display time. 目前业界所生产的双面显示装置通常为两个单面显示面板对贴而成,例如液晶显示面板与有机电致发光面板对贴,或是两有机电致发光面板对贴。 The industry the production of double-sided display device usually attached to a display panel formed of two single-sided, such as liquid crystal display panel and an organic EL panel of paste, or two of the organic electroluminescent panel paste. 图1为已知的双面显示装置。 Figure 1 shows a device known as a double-sided. 已知的双面显示装置10包含第一显示面板11及第二显示面板12。 The known double-sided display device 10 includes a first display panel 11 and the second display panel 12. 第一显示面板11具有透明基板111、第一电极112、 发光层113、第二电极U4及封装盖115。 The first display panel 11 includes a transparent substrate 111, a first electrode 112, a light emitting layer 113, the second electrode and the package cover 115 U4. 发光层113位于第一电极112与第二电极114之间。 Light-emitting layer 113 is located between the first electrode 112 and the second electrode 114. 第一电极112形成于透明基板111上,而封装盖115贴附于透明基丰反111上。 The first electrode 112 is formed on the transparent substrate 111, and the package cover 115 is attached on the transparent Jifeng 111 trans. 第二显示面板12亦具有透明基板121、第三电极122、 发光层123、第四电极124以及封装盖125。 The display panel 12 also has a second transparent substrate 121, a third electrode 122, a light emitting layer 123, the fourth electrode 124 and a sealing cover 125. 发光层123位于第三电极122 与第四电极124之间。 122 light-emitting layer 123 disposed between the third electrode and the fourth electrode 124. 第三电极122形成于透明基板121上,而封装盖125 贴附于透明基板121上,第一显示面板11的封装盖115与第二显示面板12 的封装盖125对贴以形成双面显示装置10。 The third electrode 122 formed on the transparent substrate 121, and the package cover 125 is attached on the transparent substrate 121, a first display panel 11 and the package cover 115 and the second display panel 12 of the package attached to the lid 125 pairs to form a double-sided display device 10. 如上所述,已知的双面显示装置10具有两个封装盖115和125以及两个透明基板111和121。 As described above, the known double-side display device 10 having two packages 125 and cover 115 and two transparent substrates 111 and 121. 因此,整个装置的体积较大、厚度较厚,且重量亦较重,并不符合电子产品轻、薄、短、小的趋势。 Thus, the volume of the entire apparatus larger, thicker, and the weight is also heavy, is not compliant with the light, thin, short, small tendency. 此外,两个显示面板11 和12分别经由不同工艺所制造而得,故其制造过程复杂且费时,而且两显示面板11和12必须分别驱动。 In addition, two display panels 11 and 12 are manufactured by different processes is obtained, so the manufacturing process is complicated and time consuming, and the two display panels 11 and 12 must be driven separately. 已知双面显示装置的工艺复杂且封装盖和基板数目多,而使厚度难以变薄。 Processes known double-sided display device and the package lid and the number of complex multi-substrate, the thinner the thickness is difficult. 本发明所提供的双面显示装置可解决上述缺点。 The present invention provides a double-sided display device solves the above drawbacks. 发明内容本发明的目的在于提供一种双面显示装置,两面的发光区域的面积不限于相同尺寸,并且两面的发光组件配置不需彼此相对应。 Object of the present invention is to provide a double-sided display area of ​​the device, both surfaces of the light emitting region is limited to the same size, and both surfaces of the light emitting assembly is configured without corresponding to each other. 本发明的另一目的在于提供一种双面显示装置,适合于较简易的工艺, 并具有较薄的厚度。 Another object of the present invention is to provide a double-sided display device, adapted to relatively simple process, and has a thinner thickness. 本发明的双面显示装置,包括勤良,其上表面^:有第一有机发光二极管, 其下表面设有第二有机发光二极管。 The double-sided display device of the present invention, including good ground, the upper surface ^: a first organic light emitting diode, a lower surface provided with a second organic light emitting diode. 该第一有机发光二极管与该第二有机发光二极管分别以第一保护层与第二保护层覆盖以隔绝水汽及氧气。 The first organic light emitting diode OLED and the second respectively the first and the second protective layer covers the protective layer to isolate the water vapor and oxygen. 基板上下两面的有机发光二极管分别利用导电线路连接至外部影像控制组件,因此可独立显示影像。 The organic light emitting diode, respectively upper and lower surfaces of the substrate by the conductive line is connected to an external control component image, so images can be displayed independently. 本发明的结构适合一次实施两面蒸镀,也适合以不同工艺阶段分别对不同表面蒸镀,因此两面的发光区域即可不限于相同尺寸,亦可具有独立的发光组件配置。 Structure of the present invention is suitable for both sides of the primary embodiment deposition, vapor deposition are also suitable for different surfaces at different stages of the process, both sides of the light emitting region can therefore not limited to the same size, the light emitting assembly may also have a separate configuration. 明显地,上述结构较已知结构更薄且更能简化工艺,附图说明图1为已知的双面显示装置; 图2为本发明双面显示装置的第一实施例;以及图3为本发明双面显示装置的第二实施例。 Obviously, the above-described known structure is relatively thinner and more simplified process configuration, FIG. 1 is a known double-sided display device; double-sided display device of a first embodiment of the present invention, FIG. 2; and FIG. 3 is a the second embodiment of the device according to the present invention, the double-sided display. 【主要组件符号说明】10 双面显示装置(已知)20双面显示装置ll第 一显示面板 21基板111 透明基4反 22有机发光二极管112 第一电极 221透明电极113 发光层 222有机发光层114 第二电极 223反射电极115 封装盖 23有机发光二极管12第 二显示面板 231透明电极121 透明基板 232有#几发光层122 第三电极 233反射电极123 发光层 24保护层124 第四电极 25保护层125 封装盖26接合区27 影像控制组件具体实施方式现配合附图详述本发明的双面显示装置,并列举优选实施例说明如下:请参照图2,为本发明的笫一实施例。 [REFERENCE SIGNS LIST 10 main components of a double-sided display device (known) the organic light emitting layer 222 emitting layer 113 trans 22 4 organic light emitting diode device 112 of the first electrode 221 ll a first display panel 21 based transparent substrate 111 transparent electrode 20 double-sided display The second reflective electrode 114 electrode 223 the package 115 23 12 second organic light emitting diode display panel 231 cover the transparent electrode 121 of the transparent substrate 232 has several light-emitting layer 122 # 23325 the third electrode protective layer 24 reflective electrode protective layer 123 emitting the fourth electrode 124 layer 125 encapsulating cover 26 engages the image area control assembly 27 is now fitted DETAILED DESCRIPTION Detailed Description of the double-sided display device of the present invention and include preferred embodiments as follows: Referring to FIG 2, a sleeping mat embodiment of the present invention. 双面显示装置20包括基板21、 两有机发光二极管22及23分别设置于基板21上表面与下表面、两保护层24及25分别覆盖有机发光二极管22及23以隔绝水汽及氧气。 Double-side display device 20 includes a substrate 21, two organic light emitting diodes 22 and 23 are provided on the surface of the substrate 21 and the lower surface, two protective layers 24 and 25 respectively cover the organic light-emitting diodes 22 and 23 to cut off oxygen and moisture. 基板21的上表面及下表面皆具有接合区26位于保护层24与保护层25外部,用以电连接影像控制组件27。 Upper and lower surfaces of the substrate 21 having lands 26 are located outside the protective layer 24 and the protective layer 25, for electrically connecting the image control assembly 27. 保护层24可以是单层结构,亦可包含多个材料层。 The protective layer 24 may be a single layer structure may also include a plurality of material layers. 该等材料层包含至少一层无才几材料,例如:氧化铝、氮化硅、氧化硅、碳化硅及类钻碳膜等。 Such material layer comprises at least one layer of material not only a few, for example: alumina, silicon nitride, silicon oxide, silicon carbide, and diamond-like carbon film. 优选的保护层24结构为高分子膜241 、氧化硅膜242及氮化硅膜243的复合层。 The structure 24 is preferably a polymer film protective layer 241, a silicon oxide film 242 and nitride film 243 in composite layer. 同样地,保护层25亦不限于单层或多层结构,可选用与保护层24相同或不同的材料。 Similarly, the protective layer 25 nor limited to a single layer or multilayer structure, with the same choice of the protective layer 24 or a different material. 由于保护层24及25覆盖于双面显示器20的发光面,因此其优选透光率应大于30%。 Since the protective layers 24 and 25 covering the light emitting surface 20 of the double-sided display, it is preferably greater than 30% transmittance. 接合区26可利用接触垫或导电线路(未示出)与扫描驱动芯片、数据驱动芯片等影像控制组件27电连接,或是与柔性电路板(未示出)接合。 Lands or pads 26 may utilize a conductive line (not shown) electrically connected to the scan driver IC 27, image control data driving chip components, or the flexible circuit board (not shown) engaged. 基板21 上表面及下表面的电路可共享一个影像控制组件27,或是具有各自的影像控制组件27。 21 upper and lower surfaces of the circuit board can share a image control unit 27, or images having respective control assembly 27. 因此双面显示装置20可同时显示相同的影像,或显示独立的影像。 Thus sided display device 20 may display the same image at the same time, or a separate video display. 请参照图3,为本发明的第二实施例。 Please 3, of the present invention with reference to the second embodiment of FIG. 双面显示装置20的保护层24及25包括高分子层241、 251分别位于该透明基板21上方及下方,并完全覆盖有才几发光二极管22及有机发光二极管23; 二个氧化物层242、 252,例如氧化硅,分别位于该透明基板21上方及下方,并完全覆盖该二个高分子层24L 251; 二个氮化物层243、 253,例如氮化硅,分别位于该透明基板21上方及下方,并完全覆盖该二个氧化物层242、 252;以及二个接合区26,分设于该透明基板上表面及下表面,并位于该二个氮化物层243、 253外部。 Double-side display device 24 and the protective layer comprises a polymer layer 25 20 241, 21 251 are located above and below the transparent substrate, and completely covers the light emitting diode 22 and talented several organic light emitting diode 23; two oxide layers 242, 252, such as silicon oxide, 21 respectively located above and below the transparent substrate, and completely covers the two polymer layer 24L 251; two nitride layers 243, 253, such as silicon nitride, which are located above the transparent substrate 21 and below, and completely covers the two oxide layers 242, 252; and two lands 26, and lower surfaces respectively disposed on the transparent substrate, and positioned outside of the two nitride layers 243, 253. 以下详述第二实施例的工艺。 Process of the second embodiment is described in detail below. 首先,在透明J41 21上表面形成反射电极223、有才几发光层222及透明电极221以制作有机发光二极管22。 First, on the surface of the transparent J41 21 form a reflective electrode 223, light emitting layer 222 is several talented and the transparent electrode 221 to produce an organic light emitting diode 22. 在基板21下表面形成反射电极233、有机发光层232及透明电极231以制作有机发光二极管23。 In 233, the organic light emitting layer 232 and the transparent electrode formed in the lower surface of the substrate 21 to fabricate the reflective electrode 231 is an organic light emitting diode 23. 在有机发光二极管22及23的透明电极221上分别沉积高分子层241及251。 On the organic light emitting diode 22 and the transparent electrode 221 is deposited polymer layer 23, respectively, 241 and 251. 在两高分子层241及251再蒸镀上氧化物层242及252。 In the two polymer layers 241 and 251 and then deposited on the oxide layer 242 and 252. 以及,在两氧化物层242及252上蒸镀上氮化物层243及253。 And, on both oxide layers 252 and 242 deposited on the nitride layer 243 and 253. 最后再将外部影像控制组件27利用导电线路与基板21连接在一起。 External control component then the final image of the substrate 27 using the conductive traces 21 are connected together. 顺便提及的是,形成各结构层的方法可采用转印技术或是有机气相沉积技术(organic vapor phase deposition, OVPD),并且可一次实施两面蒸镀。 Incidentally, the method of forming each structural layer transfer technique may be employed, or organic vapor phase deposition (organic vapor phase deposition, OVPD), and the first embodiment may be deposited on both sides.

以上实施例中,有机发光二极管22及23可选用高分子电激发光二极管(PLED),或是小分子电致发光二极管(OLED)。 In the above embodiment, the organic light emitting diodes 22 and 23 may be selection of polymer electroluminescent diodes (PLEDs), or a small molecule electroluminescent diode (OLED). 反射电极223与233形成于基板21上,可为金属电极,因此有机发光二极管22及23均朝基板21外侧发射光线。 The reflective electrode 223 and 233 formed on the substrate 21, may be a metal electrode, the organic light emitting diodes 22 and 23 are the substrate 21 to emit light outward. 此外,反射电极及透明电极均不限于用作阳极或阴极。 Moreover, the reflective electrode and the transparent electrode are not limited to use as an anode or a cathode. 顺便提及的是,为了提高抗反射效果及避免双面同时显示时的漏光千扰现象,反射电极223及233可以插入深色或黑色绝缘层,或以黑电极取代,或是加入抗反射材料或吸光材料。 Incidentally, in order to improve the antireflection effect and to prevent light leakage phenomenon when one thousand scrambling double-sided simultaneous display, the reflective electrode 223 and 233 may be inserted into dark or black insulating layer, a substituted or black electrode, or an antireflection material was added or a light absorbing material.

电极与发光层之间为空穴或电子传递的区域。 It is a region of a hole or electron transfer between the electrode and the light emitting layer. 在空穴传递区域中,可选择性插入空穴注入层或空穴传输层.在电子传递区域中,可选择性插入电子注入层或电子传输层。 In the hole transporting zone, the hole injection layer or hole transport layer is selectively inserted in the electron transfer region, is selectively inserted into the electron injection layer or electron transport layer.

电子传输层可采用8-羟基喹啉铝(Alq)、三聚苯駢咪唑(TPBI)、蒽(anthracene)衍生物、芴衍生物(fluorine, spirofluorine)等材料,再加以掺杂碱金属卣化物、碱土金属卣化物、碱金属氧化物或金属碳酸化合物等n型掺杂物以增强其电子迁移率. Electron transport layer may be 8-hydroxyquinoline aluminum (of Alq), three polyphenylene benzimidazole (TPBI), anthracene (anthracene) derivatives, fluorene derivatives (fluorine, spirofluorine) and other materials, coupled with compound doped with an alkali metal wine container , wine container alkaline earth metal, an alkali metal oxide or metal carbonate compound like n-type dopant to enhance the electron mobility.

电子注入层的材料可为金属化合物,采用与不透光电极功函数配合度良好的碱金属卣化物、碱土金属卣化物、碱金属氣化物或金属碳酸化合物或包含上述n型掺杂物的有机层。 Electron injection layer may be a metal compound, use and does not function with the degree of light-transmitting electrode power good alkali metal wine container thereof, alkaline earth metal wine container, an alkali metal vapor or metal carbonate compound or comprises the n-type dopant in the organic Floor.

空穴传输层材料可为NPB(N,N-di(naphthalene-l-yl)- N,N-dipheny】-benzidene)等烯丙基胺类化合物。 The hole transport layer may be a material NPB (N, N-di (naphthalene-l-yl) - N, N-dipheny] -benzidene) allylamines like compound. 空穴注入层材料可为烯丙基胺类或CuPc等钛胥类化合物, It may be a hole injection layer material or the like allylamines Xu CuPc titanium compound,

上述所有实施例中,透明电极可为氧化铟锡(ITO)、氧化铟锌(IZO)等透明导电材料或薄金属层,而透明基板可选自玻璃或塑料材质基板。 All of the above embodiments, the transparent electrode may be indium tin oxide (ITO), indium zinc oxide (IZO) transparent conductive material or a thin metal layer, and a transparent substrate selected from glass or plastic substrate. 本发明的结构不限于应用在被动式显示器或主动式显示器中,因此可与薄膜晶体管等驱动组件合并使用。 Structure of the present invention is not limited in application to display passive or active display, so combined with the drive assembly may be a thin film transistor used.

本发明与已知技^M目互比较时,更具备下列特性及优点:1. 较少的M数目。 The present invention relates to known techniques when M ^ mutual comparison purposes, but also have the following features and advantages: a small number of M.

2. 更灵活的发光组件的配置。 2. A more flexible configuration of the light emitting component.

3. 较薄的面板厚度。 3. The thin panel thickness.

4. 较简易的工艺。 4. The relatively simple process.

5. 较佳的防水、防氧气性能。 The preferred waterproof, oxygen performance.

上列详细说明针对本发明优选实施例的具体说明,但是上述实施例并非用以限制本发明的所要求保护的范围,凡未脱离本发明的等效实施或变更, 均应包含于本发明所要求保护的范围内。 The above described embodiment is described in detail with respect to preferred embodiments of the present invention, the foregoing embodiments of the present invention is not intended to limit the scope of the claimed protection, or who have not changed from the equivalent embodiment of the present invention, the present invention should be included in the within the scope of the claims.

Claims (15)

1.一种双面显示装置,包括: 基板; 第一有机发光二极管,设置于该基板上表面; 第二有机发光二极管,设置于该基板下表面; 第一保护层,覆盖该第一有机发光二极管以隔绝水汽及氧气;以及第二保护层,覆盖该第二有机发光二极管以隔绝水汽及氧气。 1. A double-sided display device, comprising: a substrate; a first organic light emitting diode disposed on the surface of the substrate; a second organic light emitting diode disposed on the lower surface of the substrate; a first protective layer covering the first organic light emitting oxygen and moisture isolation diode; and a second protective layer covering the second organic light emitting diode to isolate the water vapor and oxygen.
2. 如权利要求1的双面显示装置,其中该基板的上表面及下表面分别包括接合区位于该第一保护层与该第二保护层外部,用以电连接二个影像控制组件。 2. The double-sided display device of claim 1, wherein upper and lower surfaces of the substrate each comprise a first bonding area located outside of the second protective layer and the protective layer to electrically connect two video control module.
3. 如权利要求1的双面显示装置,其中该第一保护层包含多个子层。 3. The double-sided display device as claimed in claim, wherein the protective layer comprises a first plurality of sub-layers.
4. 如权利要求1的双面显示装置,其中该第一保护层包含至少一层无机材料。 4. The double-sided display device as claimed in claim, wherein the first protective layer comprises at least one layer of an inorganic material.
5. 如权利要求4的双面显示装置,其中该无机材料选自氧化铝、氮化硅、 氧化硅、碳化硅及类钻碳膜所构成的组。 As claimed in 4/4 group wherein the inorganic material is selected from alumina, silicon nitride, silicon oxide, silicon carbide, and diamond-like carbon film composed of display device.
6. 如权利要求1的双面显示装置,其中该第一保护层为高分子膜、氧化硅膜及氮化硅膜的复合层。 6. sided display apparatus as claimed in claim, wherein the first protective layer is a polymer film, a composite layer of a silicon oxide film and a silicon nitride film.
7. 如权利要求1的双面显示装置,其中该第二保护层包含多个子层。 7. The double-sided display device as claimed in claim 1, wherein the second protective layer comprises a plurality of sublayers.
8. 如权利要求1的双面显示装置,其中该第二保护层包含至少一层无机材料。 8. The double-sided display device as claimed in claim, wherein the second protective layer comprises at least one layer of an inorganic material.
9.如权利要求8的双面显示装置,其中该无机材料选自氮化硅、氧化硅、 碳化硅及类钻碳膜所构成的组。 9. The double-sided display device of claim 8, wherein the inorganic material is selected from silicon nitride, silicon oxide group, silicon carbide, and diamond-like carbon film is formed.
10. 如权利要求1的双面显示装置,其中该第二保护层为高分子膜、氧化硅膜及氮化硅膜的复合层。 10. The double-sided display device of claim 1, wherein the second protective layer is a polymer film, a composite layer of a silicon oxide film and a silicon nitride film.
11. 如权利要求1的双面显示装置,其中该第一保护层的透光率大于30%。 11. The double-side display device as claimed in claim 1, wherein the light transmittance of the first protective layer is greater than 30%.
12. 如权利要求1的双面显示装置,其中该第二保护层的透光率大于30%。 12. The double-side display device as claimed in claim 1, wherein the light transmittance of the second protective layer is greater than 30%.
13. 如权利要求1的双面显示装置,其中该第一有机发光二极管与该第二有机发光二极管均为高分子电激发光二极管。 13. The double-sided display device as claimed in claim 1, wherein the first organic light emitting diode OLED and the second polymer are electroluminescent diodes.
14. 如权利要求1的双面显示装置,其中该第一有机发光二极管与该第二有机发光二极管均为小分子电激发光二极管。 14. The double-side display device of claim 1, wherein the first organic light emitting diode and the second light emitting diodes which are small molecule organic electroluminescent diode.
15. —种双面显示装置,包括: 基板;第一有机发光二极管,具有反射电极设置于该基板上表面; 第二有机发光二极管,具有反射电极设置于该基板下表面;二个高分子层,分别位于该基板上方及下方,并完全覆盖该第一有机发光二极管及该第二有机发光二极管;二个氧化物层,分别位于该基板上方及下方,并完全覆盖该二个高分子聚合物层;二个氮化物层,分别位于该基板上方及下方,并完全覆盖该二个氧化物层;以及二个接合区,分设于该基板上表面及下表面,并位于该二个氮化物层外部。 15. - kind of double-sided display device, comprising: a substrate; a first organic light emitting diode, a surface having a reflective electrode disposed on the substrate; a second organic light emitting diode having a reflective electrode disposed on the lower surface of the substrate; two polymer layer , which are located above and below the substrate, and completely covers the first organic light emitting diode and the second organic light emitting diode; two oxide layers, which are located above and below the substrate, and completely covers the two polymer layer; two nitride layers, which are located above and below the substrate, and completely covers the two oxide layer; and two lands, and lower surfaces respectively disposed on the substrate, and the nitride layer located in the two external.
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