Display Panel Anti-Peep Light-Blocking Structure
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Solution Overview
Problem
Existing display technologies face challenges in achieving anti-peep functionality while minimizing display brightness loss and maintaining high display quality, as current solutions often result in reduced transmittance, brightness loss, and complex structures.
Innovation Solution
A display panel design featuring a plurality of pixel units with a color pixel region and a highlighted pixel region, where the first and second light-blocking layers include specific openings and sub-portions that overlap orthographically, allowing normal display at front viewing angles and anti-peep functionality at oblique viewing angles without the need for additional anti-peep films or structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a switchable anti-peep filter is used to block side viewing angle light, then anti-peep function is improved, but the filter requires a relatively thick substrate which causes large light loss and reduces display brightness
Solution Approach 1:
The patent divides the light-blocking function into multiple segments: a first light-blocking layer on the first substrate and a second light-blocking layer on the second substrate. Each layer contains light-blocking portions and openings that work together to block oblique light while maintaining front viewing brightness, eliminating the need for a single thick substrate
Solution Approach 2:
The patent introduces a dual-layer structure distributed across two substrates separated by a distance, transforming the light-blocking approach from a single thick layer to a distributed multi-dimensional structure. This spatial distribution allows light to pass through openings while oblique light is blocked by the light-blocking portions, reducing overall light loss
2Object-affected harmful factors
If a liquid crystal grating is used to realize anti-peep effect, then anti-peep function is improved, but it blocks certain pixels reducing transmittance and causes large overall brightness loss
Solution Approach 1:
The patent applies light-blocking portions and openings locally within pixel regions rather than blocking entire pixels. The light-blocking portions are strategically positioned to block oblique light while the openings allow normal light transmission, maintaining local display quality and overall brightness
Solution Approach 2:
Instead of blocking entire pixels as in liquid crystal grating solutions, the patent uses partial light-blocking portions within pixels that only block the harmful oblique light components. This partial action approach maintains sufficient light transmittance for normal viewing while achieving the anti-peep effect
3Object-affected harmful factors
If an anti-peep switch apparatus or switchable backlight structure is added, then anti-peep function is improved, but the display structure becomes complex and thickness increases
Solution Approach 1:
The patent merges the anti-peep function with the existing display panel structure by integrating light-blocking layers directly into the first and second substrates. This combination eliminates the need for separate anti-peep switch apparatus or switchable backlight structures, simplifying the overall display structure
Solution Approach 2:
The first and second substrates serve dual functions: as structural components of the display panel and as carriers for the light-blocking layers. This multi-functionality approach integrates anti-peep functionality into existing display components, avoiding additional structural complexity
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 effectively reduces brightness loss and enhances display quality by allowing normal picture viewing at front angles and achieving anti-peep functionality at oblique angles, improving user satisfaction without additional structural complexity.
Implementation Method 1
A side of the first substrate facing the second substrate includes a first light-blocking layer, and a side of the second substrate facing the first substrate includes a second light-blocking layer
Data Source
AI summary
A display panel and a display apparatus are provided in the present disclosure. The display panel includes a plurality of pixel units, where the pixel unit at least includes a color pixel region and a highlighted pixel region. A side of the first substrate facing the second substrate includes a first light-blocking layer, and a side of the second substrate facing the first substrate includes a second light-blocking layer and a color-resist layer. A first light-blocking portion at least includes a first opening and a first sub-portion; and a second light-blocking portion at least includes a second sub-portion and a second opening. An orthographic projection of the second opening onto the first substrate overlaps an orthographic projection of the first sub-portion onto the first substrate; and an orthographic projection of the first opening onto the first substrate overlaps an orthographic projection of the second sub-portion onto the first substrate.