Staggered Luminous Areas for Display Contrast Control
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Solution Overview
Problem
Conventional display devices suffer from low contrast and inability to effectively highlight color and brightness in main display images due to full illumination methods.
Innovation Solution
The display device features independently controllable luminous areas, with first and second luminous areas that can illuminate or not, allowing the controller to dynamically adjust illumination to enhance contrast, and includes staggered and overlapping luminous areas to optimize image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If full illumination method is used, then all light emitting elements illuminate, but the main display image has low contrast and color/brightness cannot be highlighted
Solution Approach 1:
The light emitting elements are divided into multiple independently controllable luminous areas, allowing selective illumination of different regions. This segmentation enables the controller to illuminate only the areas containing important image information, thereby enhancing contrast and highlighting color and brightness in the main display image.
Solution Approach 2:
Different luminous areas are controlled with different illumination states based on the local requirements of the displayed image. The controller adjusts the illumination intensity and distribution in different regions to match the importance and characteristics of various parts of the image, achieving local optimization of display quality.
2Illumination intensity
If multiple luminous areas are controlled independently, then contrast is enhanced, but device complexity increases
Solution Approach 1:
Multiple light emitting elements that require the same illumination control are grouped into a single luminous area. This merging reduces the number of independently controlled units from the total number of light emitting elements to a manageable number of luminous areas, simplifying the control system while maintaining the ability to enhance contrast through selective illumination.
3Manufacturing precision
If second luminous areas with shorter length and greater quantity are added, then detailed regions and edges are illuminated, but device complexity increases
Solution Approach 1:
The second luminous areas with shorter length and greater quantity are nested within or alongside the first luminous areas. This nested configuration allows the shorter second luminous areas to illuminate detailed regions and edges that fall between the longer first luminous areas, achieving comprehensive coverage of both main content and fine details without requiring a completely separate illumination system.
Data Source
AI summary
A display device including a display panel, a light guide plate and a light emitting module is disclosed. The light guide plate is opposite to the display panel and has a light incident surface. The light emitting module emits a light to the light incident surface. The light emitting module includes a substrate, multiple first light emitting elements and multiple second light emitting elements. The first light emitting elements are disposed on the substrate along the first direction and divided into multiple first luminous areas. Each first luminous area includes at least two first light emitting elements. The second light emitting elements are disposed on the substrate along the first direction and divided into multiple second luminous areas. Each second luminous area includes at least two second light emitting elements. The first and second luminous areas are staggered along the second direction perpendicular to the first direction.