Light Blocking Structure for Angular Display Brightness Control
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Solution Overview
Problem
Electronic devices face challenges in reducing display brightness at large angles, particularly in car displays, which can cause reflections on windshields and affect driving safety, due to limitations in installation positions and additional masking requirements.
Innovation Solution
A light blocking structure is disposed on a pixel substrate, comprising units with specific pitch and length ratios to control the exposure of pixels, ensuring that the display brightness is lowered at large angles, thereby addressing the issue of reflections and improving driver visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display brightness is increased to improve visibility, then the display performance is enhanced, but reflections on the windshield occur which interfere with the driving line of sight
Solution Approach 1:
The light blocking structure is divided into multiple units with different lengths (first, second, third units) arranged in a segmented pattern. This segmentation allows selective blocking of light at different positions, creating angular-dependent brightness control that reduces windshield reflections while maintaining display visibility.
Solution Approach 2:
Different units of the light blocking structure have different lengths (first unit has first length, second unit has second length, third unit has third length), creating local variations in light blocking properties. This local quality differentiation enables precise control of light emission angles, reducing reflections at specific angles while maintaining brightness in the driver's direct viewing angle.
2Object-affected harmful factors
If a light blocking structure is added to reduce reflections, then windshield interference is reduced, but the device complexity increases
Solution Approach 1:
The light blocking structure is integrated directly into the pixel substrate, merging the light blocking function with the existing display structure. This integration eliminates the need for separate additional masking components, reducing overall device complexity while achieving the reflection reduction goal.
Solution Approach 2:
The light blocking structure serves multiple functions: it blocks light at specific angles to reduce windshield reflections, maintains display brightness in the driver's direct viewing angle, and is integrated into the pixel substrate structure. This multi-functionality reduces the need for separate components, simplifying the overall device design.
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 controlled light blocking structure effectively reduces display brightness at large angles, enhancing driver safety and meeting specific product requirements by minimizing reflections on car windshields.
Implementation Method 1
A light blocking structure is disposed on a pixel substrate, and a relative relationship between a length of an exposed part of a pixel and an arrangement pitch of the corresponding light blocking structure may be controlled for lowering the display brightness at large angles
Data Source
AI summary
An electronic device includes a substrate, a first pixel, a second pixel, and a first light blocking structure. The first pixel, the second pixel, and the first light blocking structure are disposed on the substrate. The first light blocking structure includes a first unit, a second unit, and a third unit. The first unit and the second unit are separated from each other by a first pitch. The first pixel has a first exposed part between the first unit and the second unit and having a first maximum length. The second unit and the third unit are separated from each other by a second pitch. The second pixel has a second exposed part between the second unit and the third unit and having a second maximum length greater than the first maximum length. An area of the first pixel is less than that of the second pixel.