JP4757186B2 - Organic light emitting device array and organic light emitting device array package - Google Patents

Description

  The present invention provides an organic light-emitting element array having a plurality of organic light-emitting elements each having a pair of opposing electrodes and an organic compound layer provided between the pair of electrodes separated by an insulating member, and the organic light-emitting element array. The present invention relates to a package housed in a housing.

  An organic light emitting device is a so-called organic electroluminescence device in which an organic compound existing between both electrodes emits light by a current flowing between a cathode and an anode.

  A general cross-sectional structure of an organic light emitting device is shown in FIG. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, and 6 is a transparent electrode.

  In this organic light emitting device, the electrons injected from the transparent electrode 6 through the electron injection layer 5 into the light emitting layer 4 and the holes injected from the electrode 2 through the hole transport layer 3 into the light emitting layer 4 are regenerated. Excitons are generated by the coupling. It is an element that utilizes light emitted when the exciton returns to the ground state.

  A general cross-sectional structure of an organic light emitting element array having a plurality of such organic light emitting elements is shown in FIG. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, 6 is a transparent electrode, and 7 is a separated region existing between each organic light emitting element. The insulating member provided, 8 is a wiring connected to the electrode 2 of each organic light emitting element, and 9 is a resin member. Although FIG. 2 shows a device including five organic light emitting elements as an example, the number of organic light emitting elements included in one device can be freely selected.

  In the organic light emitting device array including a plurality of such organic light emitting devices, a wiring connected to the electrode of the organic light emitting device is provided in a separated region of each light emitting device below the organic light emitting device. Yes. When the insulating member 7 provided in such a separated region or the resin member 9 on the substrate 1 is light transmissive, external light incident on the organic light emitting element array from the external environment is separated from the insulating member 7 in the separated region. The light passes through the resin member 9 and is reflected by the wiring 8. Further, external light may be reflected by the insulating member 7 or the resin member 9. The reflected light generated in each of these parts is mixed with the light emitted from the organic light emitting element, and the contrast of the organic light emitting element is lowered, so there is a problem in the visibility of the image displayed by the device.

  Further, in a package in which the organic light emitting element array is housed in a casing, it is necessary to provide a polarizing layer on the light emission extraction surface of the casing in order to avoid the above-described problem that the contrast is reduced due to reflection of external light. there were. Therefore, such an organic light emitting device array package has another problem that it is complicated to manufacture and has a high cost.

Therefore, the present invention provides a pair of electrodes, which are provided on the base material side and prevent reflection of external light incident from an external environment by an optical interference method, and a transparent electrode facing the electrodes, and the pair of electrodes. A top emission type organic light emitting element array having a plurality of organic light emitting elements provided with an organic compound layer between them on the base material separated by a light-transmissive insulating member, and the organic light emitting element array An organic light emitting device array package having a provided housing, wherein a wiring connected to the organic light emitting device is also disposed under the insulating member, and is formed on a surface of the insulating member below the transparent electrode. , shields the external light entering from the external environment into the organic light emitting element array in an optical interference method, and have the member for preventing reflection of external light is provided, the surface opposite to the transparent electrode of the housing and opposite side The organic light emitting device array package, characterized in that the antireflection layer is provided on the surface.

  By providing means for avoiding the influence of external light incident on the organic light emitting element array from the external environment of the present invention, an organic light emitting element array having high contrast and good visibility of the display image can be provided. Furthermore, an organic light emitting package that is thin and lightweight, easy to manufacture, and low in cost can be provided.

  The present invention provides an organic light emitting device array having high contrast and excellent image visibility.

  Specifically, the present invention is directed to an organic light-emitting device in which an organic compound layer is provided between a pair of electrodes including an electrode provided on a substrate side and a transparent electrode facing the electrode, and the pair of electrodes. A top emission type organic light emitting element array having a plurality of separations on the base material separated by a transparent insulating member, wherein a wiring connected to the organic light emitting element is also arranged under the insulating member, A member for blocking external light incident on the organic light emitting element array from an external environment by an optical interference method and preventing reflection of external light is provided below the transparent electrode on the surface of the member. To do.

  Further, the present invention is a layer in which a member that blocks external light incident from the outside of the device and prevents reflection of external light is provided on the insulating member provided in the separation region on the wiring. And

  Further, in the present invention, the pair of electrodes provided in each organic light emitting element, the electrode provided on the substrate side as an electrode that prevents reflection of external light incident from the outside of the device, and the other electrode as a transparent electrode, In the organic light-emitting element array, reflection of external light incident on the organic light-emitting element array from an external environment in each organic light-emitting element portion and the separated region is prevented.

  In addition, the present invention is a package in which an organic light-emitting element array that prevents reflection of external light incident from the external environment is housed in a casing, and thus the package requires a polarizing layer for the purpose of preventing reflection of external light. Instead, a thin and lightweight organic light emitting element array package with high visibility of the displayed image can be provided simply and at low cost.

(Reference Embodiment 1)
An organic light emitting device array according to Embodiment 1 of the present invention includes a pair of opposed electrodes and a plurality of organic light emitting devices each having an organic compound layer provided between the pair of electrodes via a separation region. An array is provided with a light shielding member in the separation region. FIG. 3 is a diagram schematically illustrating the configuration of the organic light-emitting element array according to the first embodiment of the present invention. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, 6 is a transparent electrode, and 8 is a wiring connected to the electrode 2 of each organic light emitting element. , 9 is a resin member, and 10 is a member that prevents blocking of external light incident from the outside of the device and reflection of external light, and is a so-called top emission type organic light emitting element array.

  By providing the member 10 in the separated area of each organic light emitting element, the external light incident on the organic light emitting element array from the outside environment is provided below the organic light emitting element and in the separated area. Reflection by wiring connected to the light emitting element can be prevented. Further, since the member 10 is also prevented from reflecting such external light, the contrast of the organic light emitting element array is increased, and the visibility of an image displayed by such a device is improved.

  In the present embodiment, a known material having insulating properties can be selected as the member 10. For example, various black matrix materials used in color filters for liquid crystal displays can be used. The organic compound may be a known one, and examples thereof include Alq3 and α-NPD. In the organic light emitting element array, the light emission colors of the organic light emitting elements may be the same or different.

(Reference embodiment 2)
An organic light-emitting element array according to Reference Embodiment 2 of the present invention includes a pair of opposed electrodes and a plurality of organic light-emitting elements in which an organic compound layer is provided between the pair of electrodes via a separation region. An array,
Between the lower side of the organic light emitting element and the substrate, a wiring connected to the organic light emitting element and a resin member are provided, and the resin member is shielded from external light incident from the outside of the device, And it is used as the member which prevents reflection of external light.

  FIG. 4 is a diagram schematically showing a configuration of an organic light emitting element array according to Reference Embodiment 2 of the present invention. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, 6 is a transparent electrode, and 7 is a separated region existing between each organic light emitting element. An insulating member provided, 8 is a wiring connected to the electrode 2 of each organic light emitting element, and 11 is an outside incident from the outside of the device provided between the lower side of the organic light emitting element and the substrate It is a member that blocks light and prevents reflection of external light, and is a so-called top emission type organic light emitting element array.

  The contrast of the organic light-emitting element array is achieved by using a resin member provided between the substrate and the lower side of each organic light-emitting element to block external light incident from the outside of the device and prevent reflection of external light. And the visibility of an image displayed by such a device is improved.

  In the present embodiment, the light shielding member can be selected from known materials having insulating properties. For example, various black matrix materials used in color filters for liquid crystal displays can be used. At this time, the insulating member 7 provided in the separated region of each organic light emitting element in the organic light emitting element array may be either light transmissive or light non-transmissive. Further, the organic compound may be a known one, and examples thereof include Alq3 and α-NPD.

(First embodiment)
The organic light-emitting element array according to the first embodiment of the present invention includes an organic light-emitting element including a plurality of organic light-emitting elements each having an organic compound layer provided between a pair of opposed electrodes and the pair of electrodes via a separation region. A light emitting device array,
A member for blocking external light incident from outside the device and preventing reflection of external light is provided on the insulating member provided in the separated region of each organic light emitting element.

  FIG. 5 is a diagram schematically illustrating the configuration of the organic light-emitting element array according to the first embodiment of the present invention. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, 6 is a transparent electrode, and 7 is a separated region existing between each organic light emitting element. 8 is a wiring connected to the electrode 2 of each organic light-emitting element, 9 is a resin member, and 12 is provided in the separation region to shield external light incident from the outside of the device. In addition, it is a member that prevents reflection of external light, and is a so-called top emission type organic light emitting element array.

  By providing a member for blocking external light incident on the organic light emitting element array from the external environment and preventing reflection of external light on the insulating member 7 provided in the separated region of each organic light emitting element, The contrast of the light emitting element array is increased, and the visibility of an image displayed by such a device is improved.

  In the present embodiment, the member 12 is, for example, a metal, resin-based black matrix material, a light interference single layer, a multilayer film, a light absorption material, or the like used in a color filter for a liquid crystal display. Available. The member 12 only needs to be able to block and prevent external light in the separated region, and the installation position thereof is provided on the surface of the insulating member 7 or on the surface of the transparent electrode 6 above the insulating member in the separated region. You can also. Further, when the member 12 is an optical interference type film and the installation location of the member 12 is on the surface of the insulating member 7 and below the transparent electrode 6, external light reflected on the surface of the transparent electrode 6 and It is also possible to prevent the reflection of outside light by utilizing the interference of the light. Further, at this time, the insulating member 7 provided in the separated region of each organic light emitting element in the organic light emitting element array may be either light transmissive or light non-transmissive. The organic compound may be a known one, and examples thereof include Alq3 and α-NPD.

(Second Embodiment)
The organic light-emitting element array according to the second embodiment of the present invention has a plurality of organic light-emitting elements each having an organic compound layer provided between a pair of opposed electrodes and the pair of electrodes via a separation region. The separation region is an organic light emitting element array provided with means for shielding external light incident from the outside of the device and preventing reflection of external light, and the pair of organic light emitting elements provided in each organic light emitting element As the electrode, an electrode provided on the substrate side, which prevents reflection of external light incident from the outside of the device, and a transparent electrode which is the other electrode are provided.

  FIG. 6 is a diagram schematically showing the configuration of the organic light emitting element array according to the second embodiment of the present invention. In the figure, 1 is a substrate, 13 is an electrode which prevents reflection of external light incident from the outside of the device provided on the substrate side in the organic light emitting device, 3 is a hole transport layer, 4 is a light emitting layer, 5 is electron injection Layer, 6 is a transparent electrode, 7 is an insulating member provided in a separation region existing between each organic light emitting element, 8 is a wiring connected to the electrode 13 of each organic light emitting element, 9 is The resin member 12 is a member that is provided on the insulating member 7 in the separation region, shields external light incident from the outside of the device, and prevents reflection of external light, and is a so-called top emission type organic light emitting element. It is an array.

  In FIG. 6, a member is provided on the insulating member in the separation region of each organic light emitting element to prevent reflection of outside light from the separation region. The present invention is not limited, and the first and second embodiments of the present invention can also be used.

  The organic light emitting device of the present invention is also provided with antireflection means for external light incident from the outside of the device on the electrode part on the substrate side of each organic light emitting device and the separation region of each organic light emitting device. The contrast of the element array is high, and the visibility of the displayed image is improved.

  In addition, as an external light antireflection method of the electrode 13 used in this embodiment, either a light absorption method or an optical interference method may be used.

(Third embodiment)
An organic light emitting device array package according to a third embodiment of the present invention has a plurality of organic light emitting devices having a pair of opposing electrodes and an organic compound layer provided between the pair of electrodes through a separation region. A package in which an organic light emitting element array is housed in a housing, wherein the organic light emitting element array includes an electrode portion on a substrate side of each organic light emitting element and a separation region of each organic light emitting element, and a device outside Since a means for preventing reflection of external light incident from the above is provided, the package in which it is housed in a casing does not require a polarizing layer for the purpose of preventing reflection of external light.

  FIG. 7 is a diagram showing a configuration of an organic light emitting element array package according to the third embodiment of the present invention. In the figure, 1 is a substrate, 13 is an electrode which prevents reflection of external light incident from the outside of the device provided on the substrate side in the organic light emitting device, 3 is a hole transport layer, 4 is a light emitting layer, 5 is electron injection Layer, 6 is a transparent electrode, 7 is an insulating member provided in a separation region existing between each organic light emitting element, 8 is a wiring connected to the electrode 13 of each organic light emitting element, 9 is The resin member 12 is a member provided in the separation region, which shields external light incident from the outside of the device and prevents reflection of external light, and 14 is a housing, which is a so-called top emission type organic light emitting element array. is there.

  In the organic light emitting element array, antireflection means for external light incident from the outside of the device is applied to the electrode part on the substrate side of each organic light emitting element and the separation region of each organic light emitting element. Therefore, the package in which it is housed is not required to have a polarizing layer for the purpose of preventing reflection of external light. Therefore, it is possible to reduce the thickness and weight of the organic light-emitting element array with high contrast and high visibility of the display image. Further, the production method is simple and low cost.

  In this embodiment, when an antireflection layer is provided on the surface of the housing 14 where light emitted from the organic light emitting element array is emitted to the external environment, reflection of external light on the surface of the housing can be prevented. In such an organic light emitting device array package, the image display quality is further improved.

  In any of the embodiments, the organic layer between the electrodes may be a single layer, or may be a plurality of layers such as three-layer or five-layer elements other than the above. Further, the organic light emitting device according to the present embodiment may be applied to a display device capable of full color display, for example, composed of RGB three color light emitting devices. More specifically, you may use for the display part of a display. Among the display devices, the organic light emitting element array according to any one of these embodiments may be used as a pixel portion (light emitting portion) of a so-called active matrix driving display panel having TFTs.

  In each figure of the present invention, the member corresponding to at least one of the reference numerals 7, 10, 11, and 12 may be a member made of polyimide.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments.

(Reference Example 1)
FIG. 3 shows a first reference example of the present invention. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, 6 is a transparent electrode, and 8 is a wiring connected to the electrode 2 of each organic light emitting element. , 9 is a resin member, and 10 is a member that prevents external light from entering from the outside of the device and prevents reflection of external light.

  Chromium was formed on the substrate 1 by sputtering and patterned to a predetermined size to form the wiring 8, and then the substrate 1 was coated with a resin member 9. Subsequently, a chromium film was formed again on the substrate 1 by sputtering, and patterned to a predetermined dimension, whereby an electrode 2 was obtained. Thereafter, in order to provide a high-resistance black matrix material as a member 10 for blocking external light incident on the separated area of the organic light emitting element from the outside of the device and preventing reflection of external light, after coating the substrate 1 with a commercially available black resist, Pattern exposure, development, and rinsing were performed to form a light-shielding and anti-reflection member 10 for external light in the separated area. Thereafter, the substrate is subjected to UV / ozone cleaning, and using a vacuum deposition apparatus [manufactured by Vacuum Kiko Co., Ltd.], the following chemical formula 1 having a hole transporting property on the cleaned substrate:

The hole transport layer 3 was formed by forming a film of αNPD represented by The degree of vacuum at the time of vapor deposition was 1.0 × 10 −6 Torr, and the film formation rate was 0.2 to 0.3 nm / sec. Next, on the hole transport layer 3, the following chemical formula 2:

An aluminum chelate complex (hereinafter referred to as Alq3) represented by the following formula was formed by vacuum deposition, and the light emitting layer 4 was formed under the same conditions as when the hole transport layer 3 was formed.

  Next, on the light emitting layer 4, aluminum lithium was deposited by vacuum deposition under the same conditions as when the hole transport layer 3 was deposited as the electron injection layer 5. Thereafter, indium tin oxide (ITO) was formed on the electron injection layer 5 by sputtering to obtain a transparent electrode 6. Thus, the electrode 2, the hole transport layer 3, the light emitting layer 4, the electron injection layer 5, the transparent electrode 6, the wiring 8, the resin member 9, and the member 10 are provided on the substrate 1 to obtain an organic light emitting element array. It was.

  Subsequently, a direct current voltage was applied to the organic light emitting element array in an environment where external light was incident on the organic light emitting element array from an external environment, and the light emission characteristics were examined. As a result, this organic light-emitting element array has higher contrast and improved visibility of the display image compared to a conventional organic light-emitting element array that does not include a member 10 that blocks external light and prevents reflection. confirmed.

(Reference Example 2)
FIG. 4 shows a second reference example. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, 6 is a transparent electrode, and 7 is a separated region existing between each organic light emitting element. An insulating member provided, 8 is a wiring connected to the electrode 2 of each organic light emitting element, and 11 is an outside incident from the outside of the device provided between the lower side of the organic light emitting element and the substrate It is a member that blocks light and prevents reflection of external light.

  Under the same conditions as in Reference Example 1, a chromium film is formed on the substrate 1 by sputtering, patterned to a predetermined size, and after forming the wiring 8, shielding external light incident on the substrate 1 from the outside of the device, In order to provide a high-resistance black matrix material as the member 11 for preventing reflection of external light, a commercially available black resist is coated on the substrate 1, pattern exposure, development, and rinsing are performed, and the lower side of the organic light emitting device and the substrate The member 11 which prevents the external light from being blocked and reflected is formed. Subsequently, a chromium film as the electrode 2 was formed again on the substrate 1 by sputtering and patterned to a predetermined dimension. Thereafter, in order to provide the insulating member 7 in the separated region of the organic light emitting element, after coating the substrate 1 with a commercially available photosensitive resist, pattern exposure, development and rinsing were performed to form the insulating member 7 in the separated region. Next, the substrate was UV / ozone cleaned to form α-NPD as the hole transport layer 3 and Alq3 as the light emitting layer 4 thereon. Next, aluminum lithium was deposited as the electron injection layer 5. Thereafter, indium tin oxide (ITO) was formed on the electron injection layer 5 by sputtering, and a transparent electrode 6 was provided to obtain an organic light emitting element array.

  Subsequently, a direct current voltage was applied to the organic light emitting element array in an environment where external light was incident on the organic light emitting element array from an external environment, and the light emission characteristics were examined. As a result, the organic light-emitting element array has higher contrast and improved visibility of the display image compared to a conventional organic light-emitting element array that does not include a member 11 that blocks external light and prevents reflection. confirmed.

Example 1
FIG. 5 shows a first embodiment. In the figure, 1 is a substrate, 2 is an electrode, 3 is a hole transport layer, 4 is a light emitting layer, 5 is an electron injection layer, 6 is a transparent electrode, and 7 is a separated region existing between each organic light emitting element. 8 is a wiring connected to the electrode 2 of each organic light-emitting element, 9 is a resin member, and 12 is provided on the insulating member 7 in the separation region, This is a member that shields external light incident from and prevents reflection of external light.

  Under the same conditions as in Reference Example 1, a chromium film was formed on the substrate 1 by sputtering, patterned to a predetermined size, and after forming the wiring 8, the resin member 9 was coated on the substrate 1. Subsequently, a chromium film was formed again on the substrate 1 by sputtering, and patterned to a predetermined dimension, whereby an electrode 2 was obtained. Thereafter, in order to provide the insulating member 7 in the separated region of the organic light emitting element, after coating the substrate 1 with a commercially available photosensitive resist, pattern exposure, development and rinsing were performed to form the insulating member 7 in the separated region. Subsequently, a member 12 that shields external light incident on the device from the outside by light interference and prevents reflection is provided on the insulating member 7. The member 12 at this time is a member designed to extinguish reflection of external light on the surface of the transparent electrode 6 to be formed later on the member 12 by an optical interference method. Next, the substrate was UV / ozone cleaned to form α-NPD as the hole transport layer 3 and Alq3 as the light emitting layer 4 thereon. Next, aluminum lithium was deposited as the electron injection layer 5. Thereafter, indium tin oxide (ITO) was formed on the electron injection layer 5 by sputtering, and a transparent electrode 6 was provided to obtain an organic light emitting element array.

  Subsequently, a direct current voltage was applied to the organic light emitting element array in an environment where external light was incident on the organic light emitting element array from an external environment, and the light emission characteristics were examined. As a result, this organic light-emitting element array has higher contrast and improved visibility of the display image compared to a conventional organic light-emitting element array that does not include a member 12 that blocks external light and prevents reflection. confirmed.

(Example 2)
FIG. 6 shows a second embodiment. In the figure, 1 is a substrate, 13 is an electrode which prevents reflection of external light incident from the outside of the device provided on the substrate side in the organic light emitting device, 3 is a hole transport layer, 4 is a light emitting layer, 5 is electron injection Layer, 6 is a transparent electrode, 7 is an insulating member provided in a separation region existing between each organic light emitting element, 8 is a wiring connected to the electrode 13 of each organic light emitting element, 9 is The resin member 12 is a member that is provided on the insulating member 7 in the separation region and blocks external light incident from the outside of the device and prevents reflection of external light.

  The electrode 13 is an electrode that prevents light incident on the element from the outside due to light absorption or interference from being reflected. For example, an electrode referred to as a black layer using light interference may be used as an electrode that blocks external light and prevents reflection of external light.

  Under the same conditions as in Reference Example 1, a chromium film was formed on the substrate 1 by sputtering, patterned to a predetermined size, and after forming the wiring 8, the resin member 9 was coated on the substrate 1. Subsequently, a chromium film is again formed on the substrate 1 by sputtering, indium tin oxide (ITO) is formed thereon, and chromium is again formed thereon, followed by patterning to a predetermined dimension, and chromium-ITO-chromium three. The electrode 13 using light interference called “Black Layer” composed of layers was formed. Thereafter, in order to provide the insulating member 7 in the separated region of the organic light emitting element, after coating the substrate 1 with a commercially available photosensitive resist, pattern exposure, development and rinsing were performed to form the insulating member 7 in the separated region. Subsequently, a member 12 that shields external light incident on the device from the outside by light interference and prevents reflection is provided on the insulating member 7. The member 12 at this time is a member designed to extinguish reflection of external light on the surface of the transparent electrode 6 to be formed later on the member 12 by an optical interference method. Next, the substrate was UV / ozone cleaned to form α-NPD as the hole transport layer 3 and Alq3 as the light emitting layer 4 thereon. Next, aluminum lithium was deposited as the electron injection layer 5. Thereafter, indium tin oxide (ITO) was formed on the electron injection layer 5 by sputtering, and a transparent electrode 6 was provided to obtain an organic light emitting element array.

  Subsequently, a direct current voltage was applied to the organic light emitting element array in an environment where external light was incident on the organic light emitting element array from an external environment, and the light emission characteristics were examined. As a result, this organic light emitting element array is a conventional organic light emitting device that does not include the electrode 13 that blocks external light and prevents reflection of external light, and the member 12 that blocks external light and prevents reflection of external light. It was confirmed that the contrast was high compared to the element array and the visibility of the display image was improved.

(Example 3)
FIG. 7 shows a third embodiment. In the figure, 1 is a substrate, 13 is an electrode which prevents reflection of external light incident from the outside of the device provided on the substrate side in the organic light emitting device, 3 is a hole transport layer, 4 is a light emitting layer, 5 is electron injection Layer, 6 is a transparent electrode, 7 is an insulating member provided in a separation region existing between each organic light emitting element, 8 is a wiring connected to the electrode 13 of each organic light emitting element, 9 is A resin member 12 is provided in the separation region, shields external light incident from the outside of the device and prevents reflection of external light, and 14 is a casing.

  Under the same conditions as in Reference Example 1, a chromium film was formed on the substrate 1 by sputtering, patterned to a predetermined size, and after forming the wiring 8, the resin member 9 was coated on the substrate 1. Subsequently, a chromium film is again formed on the substrate 1 by sputtering, indium tin oxide (ITO) is formed thereon, and chromium is again formed thereon, followed by patterning to a predetermined dimension, and chromium-ITO-chromium three. The electrode 13 using light interference called “Black Layer” composed of layers was formed. Thereafter, in order to provide the insulating member 7 in the separated region of the organic light emitting element, after coating the substrate 1 with a commercially available photosensitive resist, pattern exposure, development and rinsing were performed to form the insulating member 7 in the separated region. Subsequently, a member 12 that shields external light incident on the device from the outside by light interference and prevents reflection is provided on the insulating member 7. The member 12 at this time is a member designed to extinguish reflection of external light on the surface of the transparent electrode 6 to be formed later on the member 12 by an optical interference method. Next, the substrate was UV / ozone cleaned to form α-NPD as the hole transport layer 3 and Alq3 as the light emitting layer 4 thereon. Next, aluminum lithium was deposited as the electron injection layer 5. Thereafter, indium tin oxide (ITO) was formed on the electron injection layer 5 by sputtering, and a transparent electrode 6 was provided to obtain an organic light emitting element array.

  Next, the glass casing 14 was installed from the upper surface of the substrate so as to accommodate the organic light emitting element array, thereby obtaining an organic light emitting element array package. In the organic light emitting device array package, an antireflection layer in which SiO 2 and TiO 2 thin films are alternately laminated by a sputtering method is provided on the surface on the side from which light is emitted from the housing 14, and external light on the surface of the housing is provided. To prevent reflection.

  Subsequently, a direct current voltage was applied to the organic light emitting device package in an environment where external light was incident on the organic light emitting device array package, and the light emission characteristics were examined. As a result, the visibility of the image displayed by this organic light emitting element array package is equivalent to that of an organic light emitting element array package in which a polarizing layer is provided on the surface of the conventional package to prevent reflection of external light incident on the device from the external environment. I confirmed that there was. In addition, the organic light emitting device array package of the present invention does not require the polarizing layer, so it is thinner and lighter than the conventional package, its manufacturing method is simple, and its manufacturing cost is low.

It is a schematic diagram which shows the example of a laminated structure of the conventional organic light emitting element. It is a schematic diagram which shows the example of a laminated structure of the conventional organic light emitting element. It is a schematic diagram which shows the laminated structure example of the organic light emitting element concerning the reference embodiment and reference example of this invention. It is a schematic diagram which shows the laminated structure example of the organic light emitting element concerning the reference embodiment and reference example of this invention. It is a schematic diagram which shows the laminated structure example of the organic light emitting element of this invention. It is a schematic diagram which shows the laminated structure example of the organic light emitting element of this invention. It is a schematic diagram which shows the laminated structure example of the organic light emitting element of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Substrate 2 Electrode 3 Hole transport layer 4 Light emitting layer 5 Electron injection layer 6 Transparent electrode 7 Insulating member provided in the separated region 8 Wiring 9 Resin member 10 Shielding of external light incident from outside the device provided in the separated region , A member that prevents reflection of external light 11 a member that prevents light from entering from the outside of the device provided between the substrate and the lower side of the organic light emitting element, and a member that prevents reflection of external light 12 A member that is provided on the insulating member 7 and shields external light incident from the outside of the device and prevents reflection of external light 13 An electrode that prevents reflection of external light 14 Housing

Claims (2)

A pair of electrodes, which are provided on the base material side, and which are configured to prevent reflection of external light incident from an external environment by a light interference method and a transparent electrode facing the electrodes;
A top emission type organic light emitting element array having a plurality of organic light emitting elements, each having an organic compound layer provided between the pair of electrodes, separated by a light transmissive insulating member on the substrate, and the organic light emitting element array An organic light emitting device array package having a housing provided to accommodate
Wiring connected to the organic light emitting element is also arranged under the insulating member,
Wherein the lower portion of the transparent electrode on the surface of the insulating member, and shielding external light incident from external environment into the organic light emitting element array in an optical interference method, and have the member for preventing reflection of external light is provided,
An organic light emitting device array package, wherein an antireflection layer is provided on a surface opposite to the surface facing the transparent electrode of the housing.   The organic light emitting device array package according to claim 1, wherein the antireflection layer is formed by alternately laminating SiO 2 and TiO 2.

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