Organic Light Gathering Layer for WOLED Brightness
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Solution Overview
Problem
Organic light emitting displays using the WOLED-COA mode suffer from low display brightness due to the weak intensity of color light converted from white light emitted in all directions by the OLED layer.
Innovation Solution
Incorporating an organic light gathering layer on a substrate with a transparent organic material, such as a transparent organic film, to collect and concentrate light emitted by the OLED layer, enhancing light intensity before it reaches the color filter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the WOLED-COA mode is used with a color filter layer directly formed on the substrate, then the manufacturing process is simple and production cost is low, but the display brightness is low due to weak intensity of color light converted from white light emitted in all directions
Solution Approach 1:
An organic light gathering layer is introduced as an intermediary component between the OLED layer and the color filter layer. This layer contains light gathering units that collect and redirect light emitted by the OLED layer, increasing the intensity of light reaching the color filter layer and thereby enhancing display brightness without complicating the overall manufacturing process
Solution Approach 2:
The refractive index of the organic light gathering layer is specifically designed to be higher than that of the OLED layer and the color filter layer. This parameter change enables effective light redirection and concentration, improving light utilization efficiency and display brightness while maintaining compatibility with the existing WOLED-COA manufacturing process
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The organic light gathering layer increases the light intensity transmitted through the display, thereby enhancing the display brightness of the organic light emitting display.
Implementation Method 1
an organic light gathering layer, disposed on a light exiting side of the organic light emitting layer, wherein light emitted from the organic light emitting layer is incident on the organic light gathering layer which is configured to gather the light emitted from the organic light emitting layer
Data Source
AI summary
Embodiments of the present invention relate to a pixel structure and a manufacturing method thereof. The pixel structure includes: a substrate; an organic light emitting layer, disposed on the substrate; and an organic light gathering layer, disposed on a light exiting side of the organic light emitting layer, wherein light emitted from the organic light emitting layer is incident on the organic light gathering layer which is configured to gather the light emitted from the organic light emitting layer.