Double-Side Light Emitting Display Panel With Alternating Pixel Structures

The patent merges the light emitting functions for both front and back displays into a single integrated pixel structure. The pixel structure includes a substrate with a light emitting layer that can emit light in both directions simultaneously, eliminating the need for separate display panels for each side. This combining approach maintains the double-side light emitting function while preventing weight increase that would result from stacking separate display components.

The patent transitions from a conventional single-sided display architecture to a dual-sided emission architecture by utilizing the substrate as a shared foundation. The light emitting structures are configured to emit light through both the front and back surfaces of the same substrate, effectively using the third dimension (light emission direction) to achieve dual-side functionality without adding physical layers that would increase weight.

The patent combines the light emitting functionalities for both display sides into a single integrated structure within the substrate. Rather than stacking separate display panels or adding thick protective layers on both sides, the light emitting materials and control structures are integrated within the substrate thickness, maintaining a thin overall profile while enabling dual-side emission.

The patent employs thin film structures for the light emitting layers and control electrodes within the substrate. The use of thin film transistor (TFT) technology and thin organic or inorganic light emitting layers allows the substrate to maintain a thin profile while still providing the necessary functional layers for dual-side light emission. This thin-film approach prevents thickness increase that would result from conventional bulk structures.

The patent merges the manufacturing processes for front and back displays into a single integrated fabrication sequence. The same substrate, thin film transistor layers, and light emitting materials are used for both display sides, allowing both sides to be manufactured simultaneously in one production run. This eliminates the need for separate manufacturing lines or sequential assembly of separate display panels, thereby reducing manufacturing costs.

The patent employs universal substrate and control structures that serve dual purposes for both front and back displays. The same TFT circuits, transparent electrodes, and substrate materials are used to control and support light emission on both sides. This multi-functionality approach reduces material costs and simplifies the manufacturing process compared to conventional methods that would require separate specialized components for each display side.

The patent segments the pixel array into alternating bottom-emission and top-emission pixel regions within the same substrate. This segmentation allows light from bottom-emission pixels to exit primarily through the front surface, while light from top-emission pixels exits through the back surface, minimizing cross-interference. The segmented arrangement is achieved through selective positioning of light emitting materials and micro-cavity structures during fabrication, providing a systematic solution to the interference problem.

The patent applies different local optical properties to different regions of the substrate. Bottom-emission pixel regions are equipped with optical structures (such as micro-cavities or reflective layers) optimized for front-side viewing, while top-emission pixel regions have structures optimized for back-side viewing. This local optimization of optical quality in different regions minimizes light emission interference while maintaining overall structural integration, rather than requiring completely separate physical structures for each emission type.