Photochromic polaroid and organic light-emitting display apparatus

Abstract

The invention relates to a photochromic polaroid that can be applied to an organic light-emitting display apparatus and is especially suitable for the organic light-emitting transparent display device. On the condition of exposure in a weak-light environment, the photochromic component contained by the photochromic polaroid is in a normal state basically and in a transparent state approximately and has the high light transmittance; and thus the photochromic polaroid has the high light transmittance, thereby improving the brightness of the display apparatus without increasing the power consumption of the display apparatus and influencing the service life of the apparatus. And on the condition of exposure in a high-light environment, the photochromic component contained by the photochromic polaroid changes the color to absorb external light; and the polarized light effect is realized, so that the emission of external reflected light can be suppressed and the contrast ratio of the display apparatus can be improved obviously.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to a photochromic polarizer, its application in an organic light-emitting display device, and a display device using the photochromic polarizer. Background technique [0002] Organic light-emitting devices are devices that use carriers injected after an external voltage to recombine and excite organic materials to emit light. They have many advantages such as self-luminescence, high efficiency, low voltage, fast response, wide viewing angle, and can be used on flexible substrates. They can be made into displays. Or lighting devices, much social concern. [0003] Organic Light Emitting Diodes (OLEDs) are self-luminous display devices and are widely used in the fields of display and lighting. [0004] In existing OLED displays, the display quality is usually easily affected by external light. When external light is incident to the organic light emitting diode display, refl...

AI Technical Summary

Problems solved by technology

In particular, the metal layers used as electrodes generally have high reflectivity, for example, the electrodes of AMOLED are usually made of highly reflective metal; therefore, the light emitted from the OLED's organic emission layer and the external light reflected by the internal structure will be mixed together, reflecting The external light will cause interference, resulting in reduced contrast and visibility of the screen

[0005] Especially in organic light-emitting transparent display devices, since the front and back sides of the display device can transmit light, they are more easily affected by external ambient light, which makes the contrast of the display screen worse.

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