A kind of preparation method of composite optical film and its application

Abstract

An embodiment of the present application provides a method for preparing a composite optical film, the method includes: S1: preparing a barrier layer, the barrier layer including at least a first inorganic layer; S2: preparing a porous substrate, the porous substrate is located on the barrier The first surface of the layer, the porous substrate includes a plurality of concave holes arranged in an array; S3: preparing an inorganic nanoparticle-first polymer interpenetrating network, the inorganic nanoparticles are combined with the first monomer through a surface modifier. forming the interpenetrating network through pre-polymerization; S4: preparing a filling layer, adding a second monomer to the inorganic nanoparticle-first polymer interpenetrating network to form a mixed precursor solution, and filling the mixed precursor solution in the In the concave holes of the porous substrate, the filling layer is formed by final polymerization, and the filling layer is an organic-inorganic hybrid polymer transparent gel material with hygroscopic properties, and the gel material swells after absorbing moisture to release the filling layer from the surface. The second surface is protruded to form a microlens array. The preparation method of the composite optical film of the present application can not only provide the AMOLED display panel with the ability to block water vapor and oxygen for a long time, but also make up for the defect of low luminous efficiency caused by the deterioration of the light-emitting layer in the AMOLED light-emitting device over time.

Description

technical field [0001] The embodiments of the present application relate to a method for preparing a composite optical film, and also to an AMOLED display panel including the composite optical film. Background technique [0002] Active-Matrix Organic Light-Emitting Diode (AMOLED) is also known as organic electroluminescent display and organic light-emitting semiconductor. Compared with traditional LCD, OLED does not need a backlight, and the organic material can emit light when the current passes through the organic functional layer, which greatly reduces the thickness and energy consumption of the display screen. Due to its advantages of self-illumination, wide viewing angle, high contrast ratio, low power consumption, and flexible display, OLEDs are used in new-generation mobile phone screens, computer monitors, full-color TVs and other fields, and have received extensive attention. [0003] At present, most organic electroluminescent devices are fabricated on rigid subst...

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Problems solved by technology

However, due to the fact that a large amount of organic materials contained in OLED devices are easily eroded by water vapor and oxygen in the air, and the nature of the organic light-emitting layer is not resistant to high voltage, the current AMOLED display panels have the defects of low lifespan and poor luminous efficiency. Seriously restricting the advancement of AMOLED display panels to the field of high-performance display panels

[0004] The current encapsulation methods used in this field cannot well solve the problem that water vapor and oxygen penetrate into the interior of the device and cause corrosion of the organic layer and metal layer, especially with the prolongation of use time, water vapor and oxygen tend to pass through the thin film of the encapsulation layer Cracks penetrate into the device, causing the organic light-emitting layer to gradually deteriorate, which in turn leads to a gradual decline in the light-emitting performance of the light-emitting layer over time, and even black spots appear in some pixels. Compared with the display panel used in the early stage, the display effect is consistent. Significant difference in gender

In order to solve the problem of poor luminous efficiency, various methods have been proposed to improve the external quantum efficiency of light-emitting devices. However, these methods are accompanied by the introduction of additional optical films, which increases the process and is not conducive to the flexibility of the display panel.

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