Display Panel Pixel Circuit Layout for Under-Screen Light Transmission
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Solution Overview
Problem
Traditional electronic devices with front cameras and other components integrated into the display screen cannot achieve a full-screen display due to the need for notches or holes, limiting the screen-to-body ratio and obstructing image display in certain areas.
Innovation Solution
A display panel design that allows for light-transmitting areas by rearranging pixel circuits to overlap sub-pixels, reducing shielding, and incorporating light-transmitting wires, ensuring uniform light transmission across the display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pixel circuits are arranged in traditional layouts, then circuit connectivity is ensured, but light transmittance is reduced due to shielding from pixel circuits and sub-pixels
Solution Approach 1:
The patent applies dimensionality change by transitioning from a planar 2D arrangement of pixel circuits to a 3D stacked arrangement. Multiple pixel circuits are vertically stacked above each other, allowing light to pass through horizontal gaps between the stacked circuits. This vertical stacking resolves the contradiction by maintaining circuit connectivity in the vertical dimension while preserving light transmittance in the horizontal dimension.
Solution Approach 2:
The patent segments the pixel circuit unit into multiple independent pixel circuits arranged in stacks. Each pixel circuit in the stack can be independently positioned and connected, allowing optimization of both connectivity and light transmission paths. The segmentation enables light to pass through inter-stack regions while circuits remain functionally connected.
2Adaptability or versatility
If notches or holes are formed in the display screen for photosensitive components, then component integration is enabled, but full-screen display is compromised
Solution Approach 1:
The patent extracts the photosensitive component from the traditional lateral positioning (requiring notches or holes) and relocates it to the backplane beneath the display panel. This extraction allows the entire front display surface to be used for image display while the component is integrated in the vertical stack below, eliminating the need for screen openings.
Solution Approach 2:
The patent implements nesting by placing the photosensitive component within the vertical stack structure, where it is positioned beneath the substrate and connected to pixel circuits through the stacked arrangement. This nested configuration allows the component to be integrated within the display volume without occupying lateral display area.
3Illumination intensity
If pixel circuits are compactly arranged to increase light-transmitting area, then light transmittance is improved, but circuit connectivity and functionality may be compromised
Solution Approach 1:
The patent resolves the connectivity issue by moving circuit connections to the vertical dimension through stacked arrangements. Conductive structures extend vertically between stacked pixel circuits, ensuring reliable electrical connectivity while maintaining compact horizontal footprints that maximize light-transmitting area.
Solution Approach 2:
The patent merges multiple pixel circuits into vertical stacks, combining their functional elements in the vertical dimension. This merging reduces the horizontal space occupied by circuits while maintaining all necessary electrical connections through shared vertical conductive structures, thereby increasing overall light transmittance without sacrificing connectivity.
Data Source
AI summary
A display panel includes: a substrate; a plurality of pixel units arranged in an array along a first direction and a second direction intersecting each other, each of the pixel units includes N sub-pixels; and a plurality of pixel circuit units, each of the pixel circuit units includes N pixel circuits, each of the pixel circuit units is provided with at least one arrangement unit, and in the arrangement unit, M pixel circuits are arranged adjacently in sequence, in which an orthographic projection of the at least one arrangement unit of each of the pixel circuit units on the substrate overlaps an orthographic projection of P sub-pixels of a corresponding one of the pixel units on the substrate, and P is an integer greater than or equal to 1 and less than N.