Display Panel Reflective Pixel Structure for Anti-Peeping Light Use
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Solution Overview
Problem
Existing anti-peeping display panels suffer from low light utilization rate and poor anti-peeping effect due to the use of light shielding layers that reduce the light output of anti-peeping sub-pixels, leading to unsatisfactory performance.
Innovation Solution
Incorporating first reflective structures in the pixel definition layer to reflect non-perpendicular light into the anti-peeping area, combined with electrochromic layers that switch between transparent and opaque states, enhancing light utilization and anti-peeping effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light shielding layer is used to achieve anti-peeping function, then anti-peeping effect is improved, but light utilization rate deteriorates
Solution Approach 1:
The patent converts the harmful reflected light that would otherwise be wasted into a beneficial anti-peeping effect. The reflective structure redirects light that misses the anti-peeping sub-pixel to interfere with display sub-pixels, transforming energy that would be lost into useful anti-peeping functionality.
Solution Approach 2:
The patent introduces a spatial dimension solution by using a reflective structure at a different angular dimension. Instead of blocking light directly (one-dimensional approach), the reflective structure redirects light at different angles to achieve anti-peeping, allowing light to be utilized more efficiently while maintaining the anti-peeping effect.
2Object-affected harmful factors
If anti-peeping sub-pixels are activated to interfere with display light, then anti-peeping function is achieved, but display quality deteriorates
Solution Approach 1:
The patent applies local quality by making different regions of the display panel have different functions. The anti-peeping sub-pixels and reflective structure are localized to specific areas, allowing anti-peeping function to be activated only where needed without affecting the overall display quality of other regions.
Solution Approach 2:
The reflective structure acts as an intermediary that redirects light from anti-peeping sub-pixels to display sub-pixels at specific angles. This intermediary mechanism allows anti-peeping light to interfere with display light only in side-viewing directions, maintaining display quality for front-viewing users while achieving anti-peeping effect.
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
Improves light utilization rate and anti-peeping effect by reflecting non-perpendicular light into the anti-peeping area, thereby enhancing display quality and customer satisfaction.
Implementation Method 1
a plurality of first reflective structures, located in the pixel definition layer, the plurality of first reflective structures are connected to the plurality of anti-peeping sub-pixels in a one-to-one correspondence, and a projection of each first reflective structure in the thickness direction of the display panel is located in the anti-peeping sub-pixel corresponding to the first reflective structure, and the first reflective structure is configured to reflect at least part of lights that are not perpendicular to the thickness direction of the display panel into the anti-peeping area
Implementation Method 2
combined with electrochromic layers that switch between transparent and opaque states, enhancing light utilization and anti-peeping effectiveness
Data Source
AI summary
The embodiment of the present application provides a display panel and a display device. The display panel includes a substrate, a drive circuit layer, a first anode layer, a pixel definition layer, a light-emitting layer, a second anode layer, a cathode layer, and a plurality of first reflective structures located in the pixel definition layer, and the first reflective structures correspond to the anti-peeping sub-pixels in a one-to-one correspondence, and the projection of the first reflective structure in the thickness direction of the display panel is located in the anti-peeping sub-pixel corresponding to the first reflective structure, and the first reflective structure is configured to reflect at least part of the light that are not perpendicular to the thickness direction of the display panel into the anti-peeping area.