Display Panel Through-Substrate Layout for Component Integration
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Solution Overview
Problem
Existing display panels face challenges in expanding the display area to accommodate components while maintaining image quality and light transmission, especially when components are integrated into the display area.
Innovation Solution
A display panel design that includes a substrate with pixel circuits and display elements on both surfaces, utilizing through electrodes and pad electrodes to connect components on both sides, allowing for a component area with overlapping pixel circuits and display elements, and using inorganic and organic emission layers to optimize display and component integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If components are integrated into the display area to expand functionality, then device versatility is improved, but image quality and light transmission are deteriorated
Solution Approach 1:
The patent moves components from the front surface to the back surface of the substrate, utilizing the z-dimension (depth) to resolve the conflict between component integration and light transmission. Display elements remain on the front surface while components are positioned on the back surface, allowing both functions to coexist without interfering with each other's performance
2Adaptability or versatility
If components are arranged in the display area, then device functionality is improved, but display area is reduced
Solution Approach 1:
The invention utilizes the third dimension by positioning components on the back surface of the substrate while display elements occupy the front surface. This vertical separation allows the display area to maintain its full front-surface area while components are integrated on the opposite side, effectively doubling the functional capacity without reducing the visible display area
3Area of stationary object
If pixel circuits and display elements overlap to maximize display area, then display area is improved, but manufacturing complexity is increased
Solution Approach 1:
The patent divides the substrate into distinct functional zones: the front surface contains display elements arranged in pixel regions, while the back surface contains components arranged in component regions. This segmentation allows each surface to be optimized independently for its specific function, simplifying the manufacturing process compared to attempting to integrate all functions on a single surface
Data Source
AI summary
A display panel includes a substrate having a first surface and a second surface opposite to the first surface, a first pixel circuit arranged on the first surface of the substrate, a first through electrode passing through the substrate and being connected to the first pixel circuit, a first pad electrode arranged on the second surface of the substrate and being connected to the first through electrode, a common electrode arranged on the first surface of the substrate and arranged on the first pixel circuit, a second through electrode passing through the substrate and being connected to the common electrode, and a second pad electrode arranged on the second surface of the substrate and being connected to the second through electrode.