OLED Display Design for Enhanced Light Transmittance
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Summary
Problems
Conventional OLED displays face challenges in achieving high transmittance of external light while maintaining image visibility, due to the presence of thin-film transistors, capacitors, and OLEDs in the light transmission region, which can distort external background images and reduce overall transmittance.
Innovation solutions
The OLED display design includes a substrate with pixels having distinct emission and transmission regions, where the transmission region features an inorganic insulating film, a transparent conductive film, and an organic insulating film, with pixel circuit units and electrodes positioned in the emission region, and a second electrode facing the first electrodes, forming an organic emission layer between them, allowing for increased external light transmittance without interference from the pixel components.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If pixel circuit units, capacitors, and OLEDs are placed in the light transmission region, then the display can function as a complete device, but external light transmittance is reduced and external background images are distorted
Why choose this principle:
The display is divided into two distinct regions: a first region dedicated to light emission containing pixel circuit units, capacitors, and OLEDs, and a second region dedicated to light transmission that is substantially free of these components. This spatial segmentation allows each region to optimize its specific function without interfering with the other, thereby achieving both device functionality and high external light transmittance.
Principle concept:
If pixel circuit units, capacitors, and OLEDs are placed in the light transmission region, then the display can function as a complete device, but external light transmittance is reduced and external background images are distorted
Why choose this principle:
Different regions of the display are assigned different structural characteristics: the first region contains all necessary electronic components for light emission and control, while the second region is designed with minimal components to maximize light transmission. This local differentiation of structural quality enables the display to simultaneously achieve functional completeness and optical transparency where needed.
Application Domain
Data Source
AI summary:
The OLED display design includes a substrate with pixels having distinct emission and transmission regions, where the transmission region features an inorganic insulating film, a transparent conductive film, and an organic insulating film, with pixel circuit units and electrodes positioned in the emission region, and a second electrode facing the first electrodes, forming an organic emission layer between them, allowing for increased external light transmittance without interference from the pixel components.
Abstract
An organic light-emitting diode display is disclosed. In one aspect, the display includes a substrate and a plurality of pixels formed over the substrate, each pixel including a first region from which light is emitted and a second region through which external light is transmitted. The display also includes a plurality of pixel circuit units each formed in the first region and including at least one thin-film transistor, an inorganic insulating film formed in the second region, a transparent conductive film formed over at least a portion of the inorganic insulating film, and an organic insulating film covering the pixel circuit units and at least a portion of the transparent conductive film. The display further includes a plurality of first electrodes formed over the organic insulating film and in the first regions of the pixels.