JP2016100132A - Organic LED display device with color filter, manufacturing method thereof, and color filter with antireflection layer - Google Patents

Abstract

An organic LED display device with a color filter is produced easily and accurately. An organic LED display device with a color filter includes a color filter with an AR layer, an adhesive layer, and an organic LED element. Among these, the AR layer-attached color filter 10 includes a first transparent substrate 11 and an AR layer 12 directly formed on the first transparent substrate 11. [Selection] Figure 1

Description

  The present invention relates to an organic LED (Light-Emitting-Diode) display device with a color filter, a manufacturing method thereof, and a color filter with an antireflection layer.

  Conventionally, as an organic LED display device with a color filter, a device provided with a color filter with an antireflection layer, an organic LED element, and an adhesive layer interposed between the color filter with an antireflection layer and the organic LED element Are known.

  In such an organic LED display device with a color filter, first, a multifaceted color filter and a multifaceted organic LED element are prepared, and the multifaceted color filter and the multifaceted organic LED element are adhesives. The organic LED element with a color filter that is multifaceted by bonding through the substrate is manufactured, and then the organic LED element with a color filter that is multifaceted is cut to produce an organic LED element with an individual color filter. .

  Thereafter, an antireflection film is adhered to the color filter side of each organic LED element with a color filter by an adhesive.

  Alternatively, the antireflection film is bonded to the multifaceted color filter with an antireflection film adhesive, and the multifaceted color filter and the multifaceted organic LED element are bonded via an adhesive. The attached organic LED element with a color filter is manufactured, and then, the organic LED element with a color filter that has been multifaceted may be cut to produce individual organic LED elements with a color filter.

JP 2005-268062 A JP 2011-8958 A JP2011-129919A

  When providing an antireflection film on a color filter as described above, there is a method of adhering an antireflection film to the color filter side of each organic LED element with a color filter with an adhesive. Adhering the antireflection films individually is cumbersome and takes a long time.

  On the other hand, an antireflection film was bonded to a color filter that had been previously multifaceted by using an antireflection film adhesive, and the multifaceted color filter and the multifaceted organic LED element were adhered to be multifaceted. In some cases, an organic LED element with a color filter is prepared, and then the multi-faceted organic LED element with a color filter is cut. In this case, since the antireflection film adhesive for adhering the antireflection film has a certain thickness, the cutting operation becomes difficult, and it is difficult to accurately cut the multi-faced organic LED elements with color filters. There's a problem.

  The present invention has been made in consideration of such points, and an organic LED display device with a color filter that can easily and accurately produce an organic LED display device with a color filter including an antireflection layer and a method for manufacturing the same. And a color filter with an antireflection layer.

  In the organic LED display device with a color filter, the present invention is provided on the first substrate, the antireflection layer formed on one surface of the first substrate, and the other surface of the first substrate. An organic LED element having a color filter with an antireflection layer having a colored layer, a second base material, and an organic LED layer provided on one surface of the second base material, and the color filter with an antireflection layer And an adhesive layer interposed between the organic LED element, the antireflection layer of the color filter with the antireflection layer is located on the outer surface side, and the second base material of the organic LED element is on the inner surface side It is an organic LED display device with a color filter characterized by being located in.

  The present invention is the organic LED display device with a color filter, wherein the antireflection layer is directly formed on the first base material without using an adhesive.

  In the color filter with an antireflection layer, the present invention provides a first base material, an antireflection layer formed on one surface of the first base material, and a color provided on the other surface of the first base material. A color filter with an antireflection layer, wherein the antireflection layer is located on an outer surface side.

  The present invention is the color filter with an antireflection layer, wherein the antireflection layer is directly formed on the first base material without using an adhesive.

  In the method for manufacturing an organic LED display device with a color filter, the present invention provides a first base material, an antireflection layer formed on one surface of the first base material, and the other surface of the first base material. A step of preparing a color filter with a multi-surface antireflection layer including a plurality of color filters with an antireflection layer having a colored layer provided; a second base material; and a second base material provided on one surface of the second base material. A step of preparing a multi-faceted organic LED element including a plurality of organic LED elements having an organic LED layer, the color filter with a multi-faceted antireflection layer, and the multi-faceted organic LED element are bonded together by an adhesive layer, The antireflection layer of the color filter with the antireflection layer is located on the outer surface side, and the second base material of the organic LED element is located on the inner surface side, thereby producing an organic LED element with a multifaceted color filter. Process and a method for producing a multi with cutting the color filter with the organic LED element each forming a color filter with the organic LED element, a color filter with an organic LED display device characterized by comprising a.

  The present invention is the method for manufacturing an organic LED display device with a color filter, wherein the antireflection layer is directly formed on the first base material without using an adhesive.

FIG. 1 is a side sectional view showing an organic LED display device with a color filter according to the present invention. FIG. 2 is a side sectional view showing a color filter with an AR layer. FIG. 3 is a side sectional view showing an organic LED element. FIG. 4 is a view showing a manufacturing process of an organic LED display device with a color filter according to the present invention.

<Embodiment of the Invention>
Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 are diagrams showing an embodiment of the present invention.

  First, an embodiment of an organic LED (Light-Emitting-Diode) display device with a color filter will be described with reference to FIG.

  As shown in FIG. 1, the organic LED 1 with a color filter includes a first transparent substrate 11 made of non-alkali glass and an AR layer (an upper surface in FIG. 1) provided on the outer surface (upper surface in FIG. 1). A color filter 10 with an AR layer having an antireflection layer) 12 and a colored layer 15 provided on the inner surface (lower surface in FIG. 1) of the first transparent substrate 11, and a second transparent substrate made of non-alkali glass. The organic LED element 20 which has the material 21 and the organic LED layer 22 provided in the outer surface (upper surface of FIG. 1) of the 2nd transparent base material 21 is provided.

  Further, the color filter 10 with the AR layer and the organic LED element 20 are joined together by an adhesive 30 made of an optical elastic resin.

  Next, the color filter 10 with an antireflection layer of the organic LED display device 1 with a color filter will be described in detail.

  As shown in FIG. 2, the color filter 10 with an antireflection layer includes a first transparent base material 11 made of non-alkali glass, an AR layer 12 provided on the outer surface of the transparent base material 11, and a transparent base material 11. And a colored layer 15 provided on the inner surface. The AR layer 12 includes a low refractive index layer 12a, a high refractive index layer 12b, and an anchor coat layer (AC layer) 12c.

  Among these, the low refractive index layer 12a has a fluorine-containing resin as the refractive index adjusting resin and hollow silica as the refractive index adjusting particles contained in the fluorine-containing resin. The fluorine-containing resin contains a silicon surfactant as an antifouling imparting material. The low refractive index layer 12a having such a configuration has a refractive index of 1.2 to 1.4 and a thickness of 10 nm to 100 nm.

  The high refractive index layer 12b has zirconia oxide, titanium oxide or silica as refractive index adjusting particles contained in the resin, and the high refractive index layer 12b has a refractive index of 1.55 to 1.75, and its thickness. Is 10 nm to 200 nm.

  Furthermore, the anchor coat layer 12c has zirconia oxide, titanium oxide or silica as refractive index adjusting particles contained in the resin, and the anchor coat layer 12c has a refractive index of 1.45 to 1.65. The anchor coat layer 12c functions as an adhesion layer for closely attaching the AR layer 12 to the first transparent substrate 11, and has a thickness of 0.5 μm to 20 μm. The anchor coat layer 12c may have only a resin.

  The AR layer 12 composed of the low refractive index layer 12a, the high refractive index layer 12b, and the anchor coat layer 12c thus formed is directly formed on the first transparent substrate 11 without an adhesive. .

  The colored layer 15 is provided on the inner surface of the first transparent substrate 11 and includes an R colored layer 15R, a G colored layer 15G, a B colored layer 15B, and a black matrix 16.

  In this case, as the colored layer 15R for R, the colored layer 15G for G, and the colored layer 15B for B, the organic LED layer 22 is composed of the organic LED layer 22R for R, the organic LED layer 22G for G, and for B as described later. Since the organic LED layer 22B is used, the low color rendering color layers 15R, 15G, and 15B can be used. Specifically, the colored layers 15R, 15G, and 15B having an NTSC ratio of about 50% can be used.

  Next, the organic LED element 20 will be described. The organic LED element 20 has the 2nd transparent base material 21 which consists of an alkali free glass, and the organic LED layer 22 provided in the outer surface of the 2nd transparent base material 21, as shown in FIG.

  Among these, the organic LED layer 22 includes R, G, and B organic LED elements, that is, the R organic LED layer 22R, the G organic LED layer 22G, and the B organic LED layer 22B. Each of the R organic LED layer 22R, the G organic LED layer 22G, and the B organic LED layer 22B is provided on the reflective electrode 23 and the reflective electrode 23 provided on the second transparent substrate 21 side. The light emitting layer 24 and the transparent electrode 25 made of ITO or the like provided on the light emitting layer 24 are provided.

  The organic LED layer 22R for R, the organic LED layer 22G for G, and the organic LED layer 22B for B having such a configuration are covered with a protective layer 26.

  Next, components of the R organic LED layer 22R, the G organic LED layer 22G, and the B organic LED layer 22B will be described.

  The reflective electrode 23 also functions as a reflective layer, and it is desirable to increase the luminous efficiency to have as high a reflectance as possible. In particular, when the reflective electrode 23 is used as an anode, the reflective electrode 23 is preferably made of a material having a high hole injection property. As such a reflective electrode 23, for example, the thickness in the stacking direction (hereinafter simply referred to as thickness) is 100 nm or more and 1000 nm or less, and chromium (Cr), gold (Au), platinum (Pt), nickel (Ni). , Copper (Cu), tungsten (W), silver (Ag), or other elemental elements or alloys of metal elements. A transparent conductive film such as an oxide of indium and tin (ITO) may be provided on the surface of the reflective electrode 23. Appropriate hole injection is possible even in materials such as aluminum (Al) alloys that have a high reflectivity, but have a problem of the presence of an oxide film on the surface and a hole injection barrier due to a low work function. By providing a layer, it can be used as the reflective electrode 23.

  The light emitting layer 24 has, for example, a configuration in which a hole injection layer, a hole transport layer, a light emitter, an electron transport layer, and an electron injection layer are stacked in this order from the reflective electrode 23 side. Of these, layers other than the light emitter may be provided as necessary. The configuration of the light emitting layer 24 is different depending on the light emission colors of the R organic LED layer 22R, the G organic LED layer 22G, and the B organic LED layer 22B. The hole injection layer is a buffer layer for improving hole injection efficiency and preventing leakage. The hole transport layer is for increasing the efficiency of transporting holes to the light emitter. The light emitter emits light by recombination of electrons and holes when an electric field is applied. The electron transport layer is for increasing the efficiency of electron transport to the light emitter. The electron injection layer is for increasing electron injection efficiency.

  The transparent electrode 26 is made of a transparent material such as ITO.

  The protective layer 30 is made of a transparent material such as silicon nitride, silicon oxide, silicon oxynitride, and covers and protects the R organic LED layer 22R, the G organic LED layer 22G, and the B organic LED layer 22B. ing.

  The organic LED layer 22R for R, the organic LED layer 22G for G, and the organic LED layer 22B for B are the colored layer 15R for R of the color filter 15 with the AR layer on the plane, and the colored layer 15G for G. It arrange | positions in the position corresponding to the colored layer 15B for use.

  Next, the operation of the present embodiment having such a configuration, that is, a method for manufacturing an organic LED display device with a color filter will be described.

  First, the first transparent substrate 11 is prepared, and the AR layer 12 is provided on the outer surface of the first transparent substrate 11. In this case, first, the anchor coat layer 12c is formed on the first transparent substrate 11 by spin coating and slit coating, and then the high refractive index layer 12b is formed on the anchor coating layer 12c by spin coating and slit coating. Thereafter, the low refractive index layer 12a is formed on the high refractive index layer 12c by spin coating or slit coating.

  In this way, the AR layer 12 can be formed on the first transparent substrate 11.

  Next, the black matrix 16 is provided on the inner surface of the first transparent substrate 11 at a predetermined interval, and then the R colored layer 15R, the G colored layer 15G, and the B colored layer 15B are provided at intervals between the black matrices 16. Thus, the colored layer 15 composed of the black matrix 16, the R colored layer 15R, the G colored layer 15G, and the B colored layer 15B is formed.

  In this way, a multi-sided AR layer-attached color filter 10A having a plurality of AR layer-attached color filters 10 having the first transparent substrate 11, the AR layer 12, and the colored layer 15 can be produced ( FIG. 4).

  On the other hand, by preparing a second transparent base material 21 and sequentially providing a reflective electrode 23, a light emitting layer 24, and a transparent electrode 25 on the outer surface of the second transparent base material 21, the organic LED layer 22R for R and the organic material for G The LED layer 22G and the organic LED layer 22B for B are formed.

  In this way, a multi-faceted organic LED element 20A including a plurality of organic LED elements 20 having the second transparent base material 21 and the organic LED layer 22 provided on the outer surface of the second transparent base material 21 is produced. Can do.

  Next, the multi-sided AR layer-attached color filter 10A and the multi-sided organic LED element 20A are joined by the adhesive 30 made of an optical elastic resin, and thus the organic LED element 1A with a multi-sided color filter is manufactured. it can.

  In this organic LED 1A with a multi-surface color filter, the AR layer faces the outer surface, and the second transparent substrate 21 faces the inner surface.

  Next, the organic LED element 1A with a multi-faceted color filter is cut into individual display devices and separated into individual pieces.

  Thus, the organic LED display device 1 with a color filter including the individual organic LED elements with a color filter can be obtained from the organic LED element 1A with a multifaceted color filter.

  In the organic LED display device 1 with a color filter having such a configuration, an anchor coat layer 12c, a high refractive index layer 12b, and a low refractive index layer that are directly formed on the first transparent substrate 11 without using an adhesive. Since the AR layer 12 is formed from 12a, the cutting operation is not hindered when the organic LED element with multi-faceted color filter 1A is cut into individual pieces for each display device.

  That is, after bonding an AR film to a color filter using an adhesive for AR film, when cutting an organic LED element with a multi-faceted color filter, the cutting operation is difficult because the adhesive for AR film has a certain thickness. However, according to the present embodiment, since the AR layer 12 is formed directly on the first transparent substrate 11 without using an adhesive, each organic LED element 1A with a multi-faceted color filter is provided. Each display device can be cut accurately and separated into individual display devices.

  Moreover, since both the 1st transparent base material 11 and the 2nd transparent base material 21 consist of non-alkali glass, 1A of organic LED elements with a multi-sided color filter are cut | disconnected more reliably, and are separated into each display apparatus. be able to.

<Modification>
Next, a modified example of the present invention will be described. In the said embodiment, although the organic LED layer 22 showed the organic LED layer 22R for R, the organic LED layer 22G for G, and the organic LED layer 22B for B, the organic LED layer 22 was not restricted to this. May consist of a monochromatic white organic LED layer.

  Thus, when the organic LED layer 22 consists of a monochromatic white organic LED layer, each of the R colored layer 15R, the G colored layer 15G, and the B colored layer 15B of the color filter 10 with the AR layer is highly colored. Colored layers 15R, 15G, and 15B, specifically, colored layers 15R, 15G, and 15B having an NTSC ratio of about 90% are used. Here, the NTSC ratio is a value when a C light source is used in the CIE 1931 color system.

  Furthermore, although the example in which the color filter 10 with the AR layer has the colored layer 15 provided on the first transparent base material 11 is shown, an overcoat for further protecting the colored layer 15 on the colored layer 15. A layer (OC layer) may be provided, and this overcoat layer may be interposed between the colored layer 15 and the adhesive layer 30.

  By providing the overcoat layer on the colored layer 15 in this way, it is possible to perform a scattering prevention function when the first transparent base material 11 or the second transparent base material 21 is damaged by the overcoat layer.

  Further, by increasing the thickness of the anchor coat layer 12c of the AR layer 12, the anchor coat layer 12c can have the same scattering prevention function.

DESCRIPTION OF SYMBOLS 1 Organic LED display apparatus with a color filter 10 Color filter with AR layer 11 1st transparent base material 12 AR layer 15 Colored layer 15R R colored layer 15G G colored layer 15B B colored layer 16 Black matrix 20 Organic LED element 21st 2 Transparent substrate 22 Organic LED layer 23 Reflective electrode 24 Light emitting layer 25 Transparent electrode 30 Adhesive layer

Claims (6)

In organic LED display with color filter,
A color filter with an antireflection layer having a first base material, an antireflection layer formed on one surface of the first base material, and a colored layer provided on the other surface of the first base material;
An organic LED element having a second substrate and an organic LED layer provided on one surface of the second substrate;
The color filter with the antireflection layer, and an adhesive layer interposed between the organic LED elements,
The organic LED display device with a color filter, wherein the antireflection layer of the color filter with the antireflection layer is located on the outer surface side, and the second base material of the organic LED element is located on the inner surface side.   The organic LED display device with a color filter, wherein the antireflection layer is directly formed on the first base material without using an adhesive. In color filters with antireflection layers,
A first base material, an antireflection layer formed on one surface of the first base material, and a colored layer provided on the other surface of the first base material,
The color filter with an antireflection layer, wherein the antireflection layer is located on the outer surface side.   The color filter with an antireflection layer, wherein the antireflection layer is directly formed on the first base material without an adhesive. In the manufacturing method of the organic LED display device with a color filter,
A plurality of color filters with an antireflection layer, comprising: a first base material; an antireflection layer formed on one surface of the first base material; and a colored layer provided on the other surface of the first base material. Preparing a color filter with a multi-faced antireflection layer comprising:
Preparing a multi-faced organic LED element including a plurality of organic LED elements having a second base material and an organic LED layer provided on one surface of the second base material;
The color filter with the multi-sided antireflection layer and the organic LED element with the multi-sided surface are joined by an adhesive layer, and the anti-reflection layer of the color filter with the anti-reflection layer is located on the outer surface side, and the second of the organic LED elements The base material is located on the inner surface side, thereby producing an organic LED element with a multi-faceted color filter,
And a step of cutting the organic LED elements with color filters to form individual organic LED elements with color filters, and a method for producing an organic LED display device with color filters.   The method for producing an organic LED display device with a color filter, wherein the antireflection layer is directly formed on the first base material without using an adhesive.

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