Barrier-Lens Display Panel for Viewing Angle Cutoff
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Solution Overview
Problem
Display devices used in vehicles suffer from reduced luminance and deteriorated touch sensitivity due to the use of light control films that block light emitted along a vertical direction to control or cut off viewing angles.
Innovation Solution
A display device design that incorporates barrier layers and lenses to block light from viewing angles without the need for a separate light control film, enhancing light collection efficiency and maintaining touch sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light control film is attached to control viewing angle, then viewing angle is cut off, but front luminance is reduced
Solution Approach 1:
The patent extracts and removes the light control film from the display structure, replacing it with barrier layers integrated into the display panel itself. This eliminates the need for the separate light control film that was causing luminance reduction while maintaining viewing angle control functionality through the barrier layers.
Solution Approach 2:
The patent merges the light control function with the display panel structure by integrating barrier layers directly into the panel. Instead of using a separate light control film, the barrier layers are combined with the existing display structure, eliminating the need for additional films and improving light transmission.
2Object-affected harmful factors
If a light control film is attached to control viewing angle, then viewing angle is cut off, but touch sensitivity is deteriorated
Solution Approach 1:
The patent removes the light control film that was interfering with touch sensitivity. By extracting this separate film and replacing it with integrated barrier layers, the touch sensing surface is restored to its original sensitivity while maintaining viewing angle control through the barrier layer structure.
3Object-affected harmful factors
If a light control film is attached to control viewing angle, then viewing angle is cut off, but device complexity increases
Solution Approach 1:
The patent combines the light control function with the display panel structure by integrating barrier layers directly into the panel. This merging eliminates the need for a separate light control film, reducing device complexity while maintaining viewing angle control functionality.
Solution Approach 2:
The barrier layers serve multiple functions: they control viewing angles, maintain touch sensitivity, and are integrated into the display panel structure. This multi-functionality reduces the need for separate components, simplifying the overall device structure.
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 design effectively controls or cuts off viewing angles while improving front luminance and maintaining touch sensitivity without the use of additional films, thus optimizing display performance.
Implementation Method 1
at least one lens overlapping the light emitting area and on a same layer as the at least one first barrier layer
Implementation Method 2
at least one first barrier layer on the non-light emitting area of the display panel, the at least one first barrier layer configured to block light emitted from the light emitting area
Data Source
AI summary
A display device may include: a display panel including a display area and a non-display area, the display area having a light emitting area and a non-light emitting area; at least one first barrier layer on the non-light emitting area of the display panel, the at least one first barrier layer configured to block light emitted from the light emitting area; at least one second barrier layer overlapping the at least one first barrier layer in the non-emitting area, the at least one second barrier layer configured to block light emitted from the light emitting area; and at least one lens overlapping the light emitting area and on a same layer as the at least one first barrier layer.