Display Panel State Switching Layer for Camera Light Transmission
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Solution Overview
Problem
The challenge is to increase the amount of light received by an optical element, such as a camera, disposed under a display panel, as it currently receives little light due to its location, affecting its operational performance and the screen occupancy ratio.
Innovation Solution
A display panel design with a state switching layer that can change light transmittance between two states, allowing ambient light to pass through when the camera is enabled and maintaining normal display when disabled, ensuring the camera receives sufficient light for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the optical element is disposed under the display panel in the display area, then the screen occupancy ratio is improved, but the amount of light received by the optical element is insufficient
Solution Approach 1:
The patent applies the dynamics principle by making the anode of the first light-emitting element have variable light transmittance. The anode can switch between a first state (first light transmittance) and a second state (second light transmittance), allowing the display panel to dynamically adjust light transmission to the optical element based on operational requirements. This dynamic characteristic enables the optical element to receive sufficient light when needed while maintaining normal display functionality.
Solution Approach 2:
The patent implements parameter changes by modifying the light transmittance parameter of the anode material. The anode's light transmittance is changed between different states to control the amount of light reaching the optical element. This parameter adjustment allows the system to optimize both display performance and optical element functionality without physical structural changes.
2Illumination intensity
If the state switching layer is added to control light transmittance, then the optical element receives sufficient light, but the display uniformity may be affected
Solution Approach 1:
The patent applies local quality by differentiating the structure and properties of light-emitting elements in different display areas. The first light-emitting elements (in the first display area) have anodes with different light transmittance characteristics compared to the second light-emitting elements (in the second display area). This localized differentiation allows specific regions to optimize light transmission to the optical element while other regions maintain normal display uniformity.
Solution Approach 2:
The patent segments the display area into a first display area and a second display area, with different light-emitting element configurations in each segment. The first display area contains light-emitting elements with anodes optimized for light transmission to the optical element, while the second display area contains elements with standard anodes for normal display functionality. This segmentation allows the system to achieve both optical element illumination and display uniformity simultaneously.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the optical element's performance by increasing the amount of light it receives, maintaining full-screen display capabilities, and improving imaging quality without compromising display uniformity or requiring different pixel densities in the display areas.
Implementation Method 1
the state switching layer is switchable between a first state and a second state, and the state switching layer has a smaller light transmittance in the first state than in the second state
Data Source
AI summary
Provided is a display panel having a display area including a first display area and a second display area. The display panel includes: a substrate; an array layer; a display layer including light-emitting elements each including an anode, a light-emitting layer and a cathode that are sequentially stacked; the light-emitting elements comprises first light-emitting elements and second light-emitting elements; a state switching layer located at a side of the display layer facing away from a display surface of the display panel and located in the first display area, wherein in a direction perpendicular to the display panel, the state switching layer overlaps the first light-emitting elements; the state switching layer is switchable between a first state and a second state, and the state switching layer has a smaller light transmittance in the first state than in the second state; and an optical element.