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Polarizer and organic electroluminescent device having the same

A technology of electroluminescent devices and polarizers, applied in the direction of polarizing components, electric solid devices, electrical components, etc., can solve the problems of reduced contrast, achieve the effect of preventing reflection and enhancing visibility

Inactive Publication Date: 2011-10-05
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the organic electroluminescent device is used outdoors, the internal metal wiring reflects the light incident from the outside, and the contrast ratio decreases accordingly
Internal metal wiring can reflect incident light even during black display (regardless of screen display), resulting in reduced contrast

Method used

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  • Polarizer and organic electroluminescent device having the same
  • Polarizer and organic electroluminescent device having the same
  • Polarizer and organic electroluminescent device having the same

Examples

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Embodiment Construction

[0019] The following description with reference to the accompanying drawings is provided to facilitate a comprehensive understanding of example embodiments of the invention as defined by the claims and their equivalents. This description includes various specific details to aid in that understanding, but they are considered to be merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the spirit and scope of the invention. Also, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0020] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of e...

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PUM

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Abstract

An organic electroluminescent device is disclosed. The organic electroluminescent device includes a window, a polarizer placed below the window, resin placed between the window and the polarizer, and having a refractive index similar to that of the window and the polarizer, and a self-emissive layer placed below the polarizer. The polarizer includes a polarization layer for polarizing light incident from the outside, a first wave plate for retarding the phase of the polarized incident light, and a second wave plate for retarding the phase of the incident light having passed through the first wave plate.

Description

[0001] This application claims the benefit of Korean Patent Application assigned Serial No. 10-2010-0028050 filed with the Korean Intellectual Property Office on March 29, 2010, the entire disclosure of which is hereby incorporated by reference. technical field [0002] The invention relates to an organic electroluminescent device. More specifically, the present invention relates to an organic electroluminescence (EL) device having a polarizer for achieving "true black" darkness. Background technique [0003] To adjust the grayscale on a per-pixel basis, in liquid crystal display devices the transmitted light is modulated according to the input image signal, and in organic electroluminescent (EL) devices the pixels directly radiate light at the brightness level indicated by the input image signal Light. A layer that modulates transmitted light or the brightness level of each pixel is called a modulating layer. The liquid crystal layer of the liquid crystal display device a...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/50G02B5/30B32B23/08
CPCH01L27/3244H01L51/5281H01L51/524G02B5/3083G02B5/22H01L27/322G02B5/3033H10K59/38H10K59/12H10K59/871H10K59/8791H10K59/1201H10K50/86H10K50/841
Inventor 严相容金烔涉许勋道
Owner SAMSUNG ELECTRONICS CO LTD