Hybrid OLED Micro-LED Display Panel for Blue Sub-Pixel Degradation
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Solution Overview
Problem
Conventional OLED display panels face degradation issues with blue sub-pixels, leading to limited pixel density due to the need for larger blue sub-pixel areas to ensure display effectiveness and longevity.
Innovation Solution
A hybrid display device combining organic light-emitting diodes (OLEDs) and micro light-emitting diodes (micro-LEDs), where micro-LEDs are used as blue sub-pixels to address degradation problems, allowing for smaller area occupation and improved pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the area of blue sub-pixel is increased to ensure display effect and prolong life, then reliability and duration of action are improved, but pixel density deteriorates
Solution Approach 1:
The patent changes the material parameter of blue sub-pixels from organic OLED materials to inorganic micro-LED materials, which fundamentally alters the degradation characteristics. This parameter change allows blue sub-pixels to maintain stability without requiring increased area, thus resolving the contradiction between reliability and pixel density
Solution Approach 2:
The patent employs a hybrid display structure combining organic OLED materials and inorganic micro-LED materials in a single display device. The micro-LEDs are specifically used for blue sub-pixels while other colors may use OLED, creating a composite material system that leverages the stability of inorganic materials for the problematic blue channel
2Illumination intensity
If the area of blue sub-pixel is increased to ensure display effect, then display quality is improved, but the occupied area increases limiting pixel density
Solution Approach 1:
By changing from organic to inorganic micro-LED materials for blue sub-pixels, the patent achieves superior light emission stability and intensity without requiring larger area. The inorganic materials provide more consistent illumination over time, maintaining display quality at smaller areas
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 use of micro-LEDs as blue sub-pixels enhances the durability and density of the display panel, overcoming the degradation issues while maintaining high display quality and efficiency.
Implementation Method 1
A hybrid display device combining organic light-emitting diodes (OLEDs) and micro light-emitting diodes (micro-LEDs)
Data Source
AI summary
A display device comprised of OLEDs and micro LEDs which allows for blue light degradation of the OLEDs includes a first substrate and a second substrate in a double-decked configuration. First light emitting elements are located and spaced on the first substrate and second light emitting elements are located and spaced on the second substrate, the light emitting elements on the lower deck being staggered so as not to be hidden by the light emitting elements on the upper deck. The upper deck has openings (or is transparent) therein to allow egress of light from the light emitting elements of the lower deck. The display device provides a solution for uneven display cause by degradation of pixels.