Backlight Reflective Structure for Edge Brightness Uniformity
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Solution Overview
Problem
Existing electronic devices face issues with reduced edge brightness and brightness uniformity due to gaps between the driving substrate of the backlight module and the carrier, affecting display quality.
Innovation Solution
Incorporating a reflective structure with a first reflective element adjacent to the light-emitting units, where the distance between the edge of the reflective element's surface and the driving substrate is greater than 0 mm and less than 10 mm, enhancing reflection efficiency and brightness uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If gaps are present between the driving substrate and carrier, then manufacturing is easier, but edge brightness and brightness uniformity deteriorate
Solution Approach 1:
A reflective structure is introduced as an intermediary element between the light-emitting units and the carrier. This reflective structure includes a reflective surface that redirects light that would otherwise be lost into the gap back toward the display area, thereby improving edge brightness without requiring tighter manufacturing tolerances between the driving substrate and carrier.
2Ease of manufacture
If gaps are present between the driving substrate and carrier, then manufacturing is easier, but brightness uniformity deteriorates
Solution Approach 1:
The reflective structure acts as a mediator that compensates for the non-uniform light distribution caused by gaps. By strategically positioning the reflective surface adjacent to the light-emitting units, light is redirected into the gap regions, balancing the brightness across the display area and improving overall uniformity.
Solution Approach 2:
The reflective structure is positioned locally adjacent to specific light-emitting units where gaps cause brightness non-uniformity. This localized approach allows the reflective surface to specifically address edge and gap regions without affecting the overall display uniformity, thereby improving brightness consistency in problematic areas.
3Loss of energy
If the reflective structure is positioned closer to light-emitting units, then reflection efficiency improves, but device complexity increases
Solution Approach 1:
The reflective structure utilizes a thin film or flexible reflective surface that can be easily positioned and integrated into the existing display structure. This approach achieves high reflection efficiency by placing the reflective surface close to the light-emitting units without significantly increasing device complexity, as the thin film can be incorporated during the manufacturing process.
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 reflection efficiency and brightness uniformity by positioning the reflective element closer to the light-emitting units, thereby addressing the issue of low brightness in the peripheral areas between the carrier and the driving substrate.
Implementation Method 1
The reflective structure includes a first reflective element. The first reflective element has a first surface, and the first surface is adjacent to at least one of the plurality of light-emitting units.
Data Source
AI summary
An electronic device is provided. The electronic device includes a driving substrate, a plurality of light-emitting units and a reflective structure. The plurality of light-emitting units are electrically connected to the driving substrate. The reflective structure is disposed adjacent to the plurality of light-emitting units. The reflective structure includes a first reflective element. The first reflective element has a first surface, and the first surface is adjacent to at least one of the plurality of light-emitting units. There is a first distance between an edge of the bottom of the first surface and an edge of the driving substrate. The first distance is greater than 0 mm and less than 10 mm.