Display Panel Transparent Area Uniform Brightness
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Solution Overview
Problem
Conventional display panels face challenges in achieving uniform display brightness across areas with integrated photosensitive components, such as cameras, due to differences in light transmittance, leading to suboptimal screen-to-body ratios and display effects.
Innovation Solution
The display panel incorporates a transparent display area with higher light transmittance than other areas, along with a transition area containing driving transistors that drive sub-pixels of the same color across both transparent and second display areas, ensuring uniform brightness and reducing crosstalk between sub-pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light transmittance of the transparent display area is increased to meet under-screen integration requirements for photosensitive components, then the light transmittance of the transparent display area becomes greater than that of the second display area, but this creates display brightness non-uniformity between the first display area and the second display area
Solution Approach 1:
The patent applies local quality by creating a transition display area with intermediate light transmittance properties between the high-transmittance transparent display area and the normal-transmittance second display area. This gradient structure allows different regions to have optimized properties for their specific functions: the transparent area maximizes light transmission for under-screen components, while the transition area gradually adjusts transmittance to maintain overall display uniformity.
Solution Approach 2:
The patent employs parameter changes by systematically varying the light transmittance parameter across different display areas. The transition display area implements a gradual change in light transmittance from the transparent display area to the second display area, creating a smooth optical transition that prevents abrupt brightness changes and maintains visual uniformity across the entire display panel.
2Area of stationary object
If driving transistors are placed in the transition display area to drive sub-pixels in both transparent and second display areas, then the screen-to-body ratio is improved, but the gate electrode may overlap with electrodes of sub-pixels emitting different colors, causing display brightness differences
Solution Approach 1:
The patent applies asymmetry by implementing a non-uniform spatial arrangement where the orthographic projection of the gate electrode is deliberately positioned to overlap only with sub-pixels emitting the same color (e.g., green gate electrode overlaps only with green sub-pixels). This asymmetric, selective overlap pattern prevents interference with sub-pixels emitting different colors, thereby avoiding display brightness differences while maintaining the space-efficient transistor placement in the transition area.
Data Source
AI summary
A display panel and a display apparatus. The display panel includes first and second display areas. The first display area includes a transparent display area and a transition display area. The display panel includes a device layer and a light-emitting element layer. The light-emitting element layer includes a first pixel structure arranged in the first display area. The first pixel structure includes a plurality of first sub-pixels, and the first sub-pixels include first electrodes. The device layer includes first driving transistors, and the first driving transistors include first gate electrodes. In a stacking direction the light-emitting element layer stacked with the device layer, an orthographic projection of a first gate electrode of one first driving transistor does not overlap with an orthographic projection of a first electrode of a first sub-pixel emitting a color different from another first sub-pixel driven by that first driving transistor.