Under-Screen Display Baseplate With Light-Focusing Holes
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Solution Overview
Problem
Display panels with under-screen light-sensing devices suffer from poor use effect due to insufficient luminous flux and reduced sensitivity, especially under large view angles and ambient light interference.
Innovation Solution
A display baseplate is designed with a substrate, a light-blocking layer containing light-transmitting holes, a first light-adjusting layer, and first light-focusing bodies. The first light-focusing bodies, with a refractive index different from the first light-adjusting layer, are configured to focus light incident on the light-blocking layer, increasing luminous flux and enhancing light-sensing device sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a light-blocking layer with light-transmitting holes is used for under-screen light-sensing, then full-screen design is achieved, but luminous flux is insufficient and sensitivity is reduced
Solution Approach 1:
The patent changes the optical parameters of the light-transmitting holes by introducing light-focusing bodies with specific refractive indices (1.35-1.65) and curved surface geometries. This transforms the light transmission characteristics to concentrate and focus light through the holes, increasing luminous flux while maintaining the light-sensing area for full-screen design.
Solution Approach 2:
The patent employs curved surfaces on the light-focusing bodies (convex or concave spherical/cylindrical surfaces) to manipulate light paths. The curved geometry focuses incident light onto the light-sensing device, enhancing luminous flux through optical concentration while preserving the underlying light-transmitting hole structure for full-screen coverage.
2Manufacturing precision
If light-transmitting holes are made smaller to increase density, then resolution is improved, but luminous flux decreases and sensitivity is reduced
Solution Approach 1:
The patent introduces light-focusing bodies with optimized optical parameters (refractive index 1.35-1.65, specific curvature radii) that compensate for the reduced size of light-transmitting holes. These parameters enable effective light focusing even through smaller, higher-density holes, maintaining both manufacturing precision and sufficient luminous flux.
Solution Approach 2:
The curved surfaces of the light-focusing bodies serve as optical elements that concentrate light onto the light-sensing device. This curvature-based optical design allows smaller light-transmitting holes to effectively guide sufficient light flux, resolving the contradiction between hole size, density, and luminous flux.
3Area of stationary object
If the display panel uses under-screen light-sensing structure, then full-screen display is achieved, but ambient light interference increases and sensitivity decreases
Solution Approach 1:
The patent applies light-focusing bodies with specific optical properties at precise locations corresponding to light-transmitting holes. This localized optical enhancement creates favorable light paths for the light-sensing device while maintaining full-screen display coverage, effectively managing ambient light interference through spatially selective optical control.
Solution Approach 2:
The curved surfaces of the light-focusing bodies manipulate ambient light paths, concentrating useful light onto the light-sensing device while the light-blocking layer structure filters out harmful ambient light. This geometric optical design enhances sensitivity while maintaining full-screen functionality.
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
The solution effectively increases the luminous flux of light-transmitting holes, enhances the sensitivity of the under-screen light-sensing device, and reduces the influence of ambient light, thereby improving the overall use effect of the display panel.
Implementation Method 1
a refractive index of the first light-adjusting layer is different from a refractive index of each of the first light-focusing bodies... the first light-focusing bodies are configured to focus light incident to the light-blocking layer
Data Source
AI summary
Provided are a display apparatus, a display panel and a display baseplate. The display baseplate includes: a substrate (2); a light-blocking layer (11) on the substrate (2), and including light-transmitting holes (10); a first light-adjusting layer (7) at a side of the light-blocking layer (11); and first light-focusing bodies (8) at a surface of the first light-adjusting layer (7) away from the light-blocking layer (11), where a refractive index of the first light-adjusting layer (7) is different from a refractive index of each of the first light-focusing bodies (8). In this way, use effect can be improved.