Non-quadrangular Display Panel with Pseudo-pixels
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Solution Overview
Problem
There is a demand for display devices with non-quadrangular display areas, such as circular or oval shapes, which existing OLED display technologies struggle to accommodate effectively due to limitations in pixel arrangement and boundary design.
Innovation Solution
A display panel design featuring a non-quadrangular active area with a display area and a non-display area, where the non-display area has pseudo-pixels that mimic the structure of emitting pixels but do not emit light, and a substrate with asymmetric boundaries, allowing for curved edges that do not overlap pixels, enabling flexible and non-rectangular display shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a non-quadrangular display area is implemented, then the aesthetic appeal and flexibility of the display device is improved, but the pixel arrangement and boundary design becomes more complex
Solution Approach 1:
The display panel is divided into a display area and a non-display area, with the non-display area further segmented into multiple non-emitting pixels. This segmentation allows the curved boundary to be achieved by selectively controlling pixel emission rather than through complex physical boundary structures, thereby reducing manufacturing complexity while maintaining design flexibility.
Solution Approach 2:
The patent employs asymmetric design in the pixel arrangement near the curved boundary. Different pixel configurations are used on opposite sides of the curved edge, with one side featuring emitting pixels and the other featuring non-emitting pixels. This asymmetric approach enables the non-quadrangular display shape while simplifying the overall structure compared to symmetric alternatives.
2Shape
If a curved boundary is introduced between display and non-display areas, then the non-quadrangular shape is achieved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses controllable emission states of pixels to dynamically define the curved boundary. Instead of relying on fixed physical boundaries requiring high manufacturing precision, the curved edge is formed by selectively activating or deactivating pixel emission through electrical control. This dynamic approach significantly reduces manufacturing precision requirements while maintaining accurate curved boundary formation.
3Stability of the object's composition
If pseudo-light-emitting elements are used in the non-display area, then the structural consistency across the panel is improved, but the device complexity increases
Solution Approach 1:
The patent creates simplified copies of the light-emitting element structure in the non-emitting pixels. These pseudo-light-emitting elements replicate the basic structural framework (electrodes, insulating layers) without the light-emitting functional components. This copying approach maintains structural consistency across the entire panel, enabling uniform manufacturing processes while the selective omission of emission components in non-display areas keeps the overall device complexity manageable.
Data Source
AI summary
A display panel includes: an active area and a peripheral area adjacent to the active area, wherein the active area includes a display area including a plurality of emitting pixels and a non-display area including a plurality of non-emitting pixels, an emitting pixel of the plurality of emitting pixels includes a light-emitting element, and a non-emitting pixel of the non-emitting pixels does not include any light-emitting element or includes a pseudo-light-emitting element that is not capable of emitting light.