Peep-proof Display Panel Light-shielding Wall Structure
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Solution Overview
Problem
Conventional peep-proof technologies for display devices increase the thickness of the display apparatus, compromising both security and visual range, as they require additional layers to achieve privacy protection.
Innovation Solution
Incorporating a light-shielding wall between sub-pixel columns in the pixel array substrate, with a length smaller than the spacing between the substrates, to shield sub-pixels and reduce the visual range without increasing the display panel's thickness, achieved through ink-jet printing of a Black Matrix wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a peep-proof film is applied onto the display panel, then privacy protection is achieved, but the thickness of the display apparatus is increased
Solution Approach 1:
The light-shielding wall is integrated into the pixel array substrate structure, merging the peep-proof function with the existing substrate rather than adding a separate film layer. This combines multiple functions into a single component, achieving privacy protection without increasing overall thickness
Solution Approach 2:
Instead of adding thickness in the vertical dimension through film layers, the solution uses the horizontal dimension by creating light-shielding walls between sub-pixel columns. The peep-proof effect is achieved through lateral light blocking rather than vertical layering
2Object-affected harmful factors
If a peep-proof film with multiple layers is used, then shielding effect is improved, but the complexity of the display structure is increased
Solution Approach 1:
The peep-proof function is extracted from the separate film layer and implemented directly within the pixel array substrate through light-shielding walls. This eliminates the need for additional protective film layers while maintaining the shielding effect
Solution Approach 2:
The pixel array substrate is given multiple functions: it serves as both the structural base for pixels and the peep-proof barrier through integrated light-shielding walls. This multi-functional design reduces overall structural complexity by eliminating separate components
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 solution effectively achieves peep-proofing while maintaining the original thickness and luminance of the display panel, ensuring privacy without compromising the visual experience within the optimal viewing angle.
Implementation Method 1
a light-shielding wall being provided between any two adjacent columns of sub-pixels
Data Source
AI summary
A display panel and a display device are provided by embodiments of the present disclosure, relating to a field of display technology. The display panel comprises a pixel array substrate and an opposite substrate which is located opposite to the pixel array substrate, the pixel array substrate comprising a pixel array and a substrate on which the pixel array is arranged; the pixel array comprises a plurality of columns of sub-pixels, a light-shielding wall being provided between any two adjacent columns of sub-pixels; and a first length of the light-shielding wall in a direction perpendicular to the substrate is smaller than a spacing between the pixel array substrate and the opposite substrate. By providing the light-shielding wall which is enabled to shield sub-pixels(s) so as to decrease a visual range of the display panel, between any two adjacent columns of sub-pixels within the pixel array, a peep-proof aim can be achieved by the embodiments of the present disclosure. And the first length of the light-shielding wall in a direction perpendicular to the substrate is smaller than a spacing between the pixel array substrate and the opposite substrate, such that neither the thickness of the display panel nor that of the display apparatus can be increased by providing the light-shielding wall.