Manufacturing process for increasing readable contrast of organic light emitting diode

Abstract

A making process for organic light-emitting diode readable contrast, utilizes the organic light-emitting diode's insulation layer for color level deepening to reduce the cathode reflection condition resulted from the light struck for the organic light-emitting diode. In accordance to the invention, the insulation layer coating material made by mixing the insulation material with the addictive of the deepening color level is coated onto the electrically-conductive backing plate, and an insulating layer is formed by a yellow light process and an etching process, wherein the deep color appears on the etched regions on the insulation layer, so as to make the effect of organic light-emitting diode readable contrast.

Description

technical field [0001] The invention relates to a manufacturing method for increasing the readable contrast of an organic light emitting diode, and mainly aims at a manufacturing method of an insulating layer of an organic light emitting diode. Background technique [0002] Organic light emitting diode (OLED) has many advantages such as self-illumination, thin thickness, fast response speed, wide viewing angle, good resolution, high brightness, flexible panel and wide temperature range, etc. It is considered to be a new generation of flat-panel display technology after Thin film transistor liquid crystal display (TFT-LCD), and the light-emitting principle of the organic light-emitting diode (OLED) is to use the characteristics of materials to convert electron holes into light-emitting Combined on the layer, the energy generated will elevate the light-emitting molecules from the ground state to the excited state, and when the electrons return from the excited state to the gro...

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Problems solved by technology

[0004] However, because the cathode of the organic light-emitting diode (OLED) element is made of metal, there will be cathode reflection in bright environments such as outdoors, which will interfere with its display quality. The general solution is to use a cathode that absorbs light (black cathode), or Use a light-absorbing coating layer (black layer), or add a quarter-wavelength light-reducing plate (quarter-wavelength retardation plate) to the organic light-emitting diode (OLED) element to solve the problem

However, in the light-absorbing cathode (black cathode) method, the development of the light-absorbing cathode (blackcathode) material is not easy and has the disadvantage of high difficulty in the manufacturing process; in the light-absorbing coating layer (black layer) method, the light-absorbing The coating layer (black layer) also has the disadvantages of difficult material development and high manufacturing process; another method is to add a quarter-wavelength light-reducing plate to the organic light-emitting diode (OLED) element, plus this quarter-wavelength The one-wavelength light-reducing plate will increase the thickness of the element, and the light-reducing plate will destroy the luminance of the original organic light-emitting diode (OLED) element, and the addition of the quarter-wave light-reducing plate will cause an increase in manufacturing costs and reduce the brightness of the element.

Combining the above methods to solve the cathode reflection interference, we can find that the solutions will greatly increase the manufacturing cost, and will affect the process pass rate during production

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