Display Panel Asymmetric Light Blocking for Viewing Angle Control
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Solution Overview
Problem
Conventional display panels face challenges in maintaining image resolution when displaying content at narrow viewing angles, as existing technologies struggle to effectively block light emissions in specific directions, compromising user privacy and image clarity.
Innovation Solution
The implementation of a display panel design featuring a pixel unit with a light blocking element that strategically blocks light emissions from first and second light emitting elements in specific directions, utilizing a pixel circuit with transistors and global signal lines to control the emission of light, ensuring that the image is not viewed from restricted angles without reducing resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light blocking element is added to control viewing angle, then user privacy is improved, but device complexity increases
Solution Approach 1:
The pixel structure is segmented into multiple light emitting elements (first and second light emitting elements) within each pixel, with each element having its own light blocking element. This segmentation allows independent control of light emission in different directions, achieving viewing angle control while maintaining a systematic approach to managing complexity
Solution Approach 2:
Light blocking elements are strategically positioned at specific locations around each light emitting element, with different blocking characteristics in different directions. The light blocking elements have asymmetric positioning where the distance from the light emitting element varies depending on the direction, creating localized light control properties that achieve viewing angle restriction without requiring complete surrounding blocking structures
2Object-affected harmful factors
If asymmetric light blocking is implemented, then viewing angle control is improved, but manufacturing precision requirements increase
Solution Approach 1:
The light blocking elements are positioned asymmetrically relative to each light emitting element, with different distances from the light emitting element in different directions. Specifically, the light blocking element blocks light in a first direction at a different distance than in a second direction, creating asymmetric viewing angle control that restricts viewing from certain directions while maintaining visibility from others
Solution Approach 2:
The asymmetric light blocking structure is replicated across all pixels in the display panel, with each pixel containing first and second light emitting elements with corresponding light blocking elements. This copying of the asymmetric structure throughout the display allows consistent viewing angle control across the entire panel while using standardized manufacturing processes
3Object-affected harmful factors
If multiple light emitting elements per pixel are used, then viewing angle control is improved, but device complexity increases
Solution Approach 1:
Multiple light emitting elements (first and second light emitting elements) are combined within each pixel, with both elements controlled by the same pixel circuit. The light blocking elements for both emitting elements are positioned to work together to achieve viewing angle control. This merging approach allows viewing angle control to be achieved at the pixel level without requiring separate control circuits for each light emitting element, thus managing 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 solution allows for the display of images at both wide and narrow viewing angles, maintaining resolution and ensuring user privacy by strategically controlling light emissions, thus addressing the limitations of conventional display panels.
Implementation Method 1
the light blocking element blocks a portion of light emitted from the first light emitting element and traveling in a first direction, and blocks a portion of light emitted from the second light emitting element and traveling in a second direction opposite to the first direction
Data Source
AI summary
A display panel includes a pixel unit including a plurality of pixels which emits light of different colors from each other, and a light blocking element disposed on the pixel unit and blocking a portion of light emitted from each of the plurality of pixels. Each of the plurality of pixels includes a pixel circuit, a first light emitting element electrically connected to the pixel circuit, and a second light emitting element electrically connected to the pixel circuit, where the second light emitting element emits light of a same color as light emitted from the first light emitting element. The light blocking element blocks a portion of light emitted from the first light emitting element and traveling in a first direction, and blocks a portion of light emitted from the second light emitting element and traveling in a second direction opposite to the first direction.