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Wavelength selective absorption filter and organic electroluminescent display device

A wavelength selection and filter technology, which is applied in the field of wavelength selective absorption filters and organic electroluminescent display devices, can solve problems such as brightness reduction and contrast reduction, and achieve the effects of suppressing influence, realizing suppression and suppression of brightness reduction

Active Publication Date: 2022-03-11
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] On the other hand, when the OLED display device is used in an external light environment such as outdoors, the external light is reflected in the metal electrodes constituting the OLED display device, and display defects such as a decrease in contrast occur.
It is known that a circular polarizing plate equipped with an optically anisotropic layer such as a λ / 4 retardation film is used to suppress the reflection of external light. In this technology, the problem of brightness reduction occurs

Method used

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  • Wavelength selective absorption filter and organic electroluminescent display device
  • Wavelength selective absorption filter and organic electroluminescent display device
  • Wavelength selective absorption filter and organic electroluminescent display device

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Embodiment

[0744] Hereinafter, the present invention will be described in further detail based on examples. Materials, usage-amounts, ratios, processing contents, processing procedures, etc. shown in the following examples can be appropriately changed unless departing from the gist of the present invention. Therefore, the scope of the present invention is not limited to the Examples shown below.

[0745] In addition, in the following examples, "parts" and "%" showing a composition are based on mass unless otherwise specified. And, λ max Refers to the maximum absorption wavelength showing the maximum absorbance.

[0746] [Production of wavelength selective absorption filter]

[0747] The materials used in the production of the wavelength selective absorption filter are shown below.

[0748]

[0749] (resin 1)

[0750] Polystyrene resin (manufactured by PS Japan Corporation, SGP-10 (trade name) of PSJ-polystyrene GPPS, Tg100°C, fd0.56) was heated at 110°C, and naturally cooled to ro...

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Abstract

Provided are a wavelength selective absorption filter and an organic electroluminescent display device, the wavelength selective absorption filter containing a resin and four kinds of dyes A-D having a main absorption wavelength band in specific different wavelength regions, the absorbance Ab (lambda) at a wavelength lambda nm of the wavelength selective absorption filter satisfying specific relational expressions (I)-(VI).

Description

technical field [0001] The invention relates to a wavelength selective absorption filter and an organic electroluminescent display device. Background technique [0002] An organic electroluminescent (OLED) display device is a device that displays images using self-emission of OLED elements. Therefore, compared with various display devices such as liquid crystal display devices and plasma display devices, it has the advantages of being able to achieve high contrast ratio, high color reproducibility, wide viewing angle, high-speed response, and thinner and lighter weight. In addition to these advantages, research and development have been actively carried out as next-generation display devices from the viewpoint of flexibility. [0003] On the other hand, when an OLED display device is used in an external light environment such as outdoors, the external light is reflected by metal electrodes constituting the OLED display device, resulting in poor display such as a decrease in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/3445C09B23/04C09B57/00H01L27/32H05B33/12H01L51/50C08K5/3415C08L25/06G02B5/22C08L101/00G09F9/30
CPCC08K5/3445C09B23/04C09B57/00H05B33/12C08K5/3415C08L25/06G02B5/22C08L101/00G09F9/30H10K59/8792G02B5/223C08K5/353C09B57/007C09B57/08C09B23/0066C09B23/0075H10K59/38C08L71/123G02B1/04C08L71/12C08L2666/70C08L67/00C09B23/166C09B67/0034H10K50/865
Inventor 深川伸隆远山浩史佐佐木大辅神保良弘
Owner FUJIFILM CORP