OLED Pixel Array Transmittance Region Segmentation
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Solution Overview
Problem
Conventional transparent OLED displays have high spatial frequency of transmittance regions, leading to unfavorable imaging quality of external images observed through them.
Innovation Solution
The OLED pixel array design includes first and second signal lines intersecting on a substrate, with transmittance regions surrounded by these lines and OLED pixels, expanding the area and width of each transmittance region to reduce spatial frequency, thereby improving image definition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transmittance regions are arranged between every two sub-pixels with small area, then the transparent OLED display allows observation of external images, but the spatial frequency of transmittance regions becomes excessively high, resulting in unfavorable image definition
Solution Approach 1:
The invention divides the transmittance regions into two separate portions (first transmittance portion and second transmittance portion) that are positioned at opposite sides of the pixel array units. This segmentation allows each transmittance portion to have a larger area while maintaining the overall transparency function, thereby reducing spatial frequency and improving image definition of external images observed through the display.
2Productivity
If transmittance regions are arranged between every two sub-pixels, then the transparent OLED display can display images, but the area of each transmittance region is small, causing high spatial frequency
Solution Approach 1:
The invention repositions the transmittance portions from being located between adjacent sub-pixels in the same dimension to being positioned at opposite sides of the pixel array units in a different spatial arrangement. This dimensional change allows the transmittance portions to have larger area while preserving the transparent display functionality.
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 design enhances the image definition of external images observed through the OLED pixel array by reducing the spatial frequency of transmittance regions, resulting in improved imaging quality.
Implementation Method 1
An OLED display is characterized by self-luminance
Data Source
AI summary
An organic light emitting diode (OLED) pixel array includes a plurality of first signal lines, a plurality of second signal lines, and a plurality of pixel array units. The pixel array units are arranged in array on a substrate. Each of the pixel array units includes a plurality of OLED pixels. The OLED pixels are connected to the same first signal line and respectively connected to a first portion and a second portion of the second signal lines. At least two of the OLED pixels are located between the first portion and the second portion. A transmittance region is surrounded by the first portion, the second portion, and the OLED pixels, and the first portion and the second portion are respectively located at two opposite sides of the transmittance region.