Transparent OLED Pixel Regions for Under-Display Optoelectronics
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Solution Overview
Problem
Traditional OLED displays are not transparent or are only partially transparent, limiting their ability to cover optoelectronic components in devices, which requires cutouts or 'notches' as the display size increases, restricting their design and functionality.
Innovation Solution
The OLED display features a transparent or semi-transparent substrate with distinct regions of pixels, where one region has a higher proportion of light emissive area compared to the other, allowing more light to pass through and accommodating optoelectronic components underneath, enhancing display size and coverage without the need for cutouts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional OLED displays are used, then display coverage is limited, but transparency is insufficient (only 4-5% light transmission)
Solution Approach 1:
The patent applies local quality by creating different pixel structures in different regions of the display. The first region has pixels with a first structure that provides higher transparency, while the second region has pixels with a second structure that provides different transparency characteristics. This allows the display to have both high coverage and region-specific transparency to accommodate optoelectronic components.
Solution Approach 2:
The display is segmented into multiple regions with different pixel structures. By dividing the display into a first region and a second region, each with optimized pixel designs, the patent achieves overall high coverage while maintaining specific transparency requirements in different areas for optoelectronic component accommodation.
2Area of stationary object
If display size increases, then display coverage improves, but cutouts or notches are required to accommodate optoelectronic components
Solution Approach 1:
The patent uses local quality to create region-specific pixel structures that provide the necessary transparency for optoelectronic components without requiring cutouts. The first region pixels are designed with specific structural characteristics that enable higher light transmission, allowing components to be placed behind the display while maintaining full coverage.
Solution Approach 2:
Instead of creating cutouts or notches to accommodate optoelectronic components (traditional approach), the patent inverts the approach by making the display itself transparent in specific regions through specialized pixel structures. This allows components to be integrated behind the display rather than requiring the display to be removed or cut out.
3Illumination intensity
If transparency is increased to accommodate optoelectronic components, then light transmission improves, but display resolution may be compromised
Solution Approach 1:
The patent applies local quality by designing different pixel structures for different regions. The first region pixels are optimized for transparency to accommodate optoelectronic components, while the second region pixels are optimized for resolution and display quality. This allows the display to maintain high resolution in most areas while providing necessary transparency where components are located.
Solution Approach 2:
By segmenting the display into regions with different pixel structures, the patent can optimize each region for its specific function. The segmentation allows maintaining high manufacturing precision and resolution in the second region while the first region provides the transparency needed for optoelectronic components.
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
This design increases light transmittance in areas with optoelectronic components, enabling larger display coverage without compromising functionality or aesthetics, while maintaining higher resolution in critical areas.
Implementation Method 1
an organic light emitting diode (OLED) display... a first region comprising a plurality of first pixels and a second region comprising a plurality of second pixels
Data Source
AI summary
In one example aspect, a device (100) comprises an organic light emitting diode (OLED) display (102, 500). The display comprises a transparent or semi-transparent substrate (510) and includes a first region (104) comprising a plurality of first pixels (300) and a second region (106) comprising a plurality of second pixels (400). A first proportion of each first pixel comprises a first light emissive area (302), a second proportion of each second pixel comprises a second light emissive area (402), and the first proportion is different to the second proportion, wherein the first proportion comprises a ratio of a size of the first light emissive area to a size of each first pixel (300), and the second proportion comprises a ratio of a size of the second light emissive area to a size of each second pixel (400).