Backlight Module In-Plane Hole Illumination
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Solution Overview
Problem
Current liquid crystal display devices with in-plane hole structures lack a light source to provide brightness within the opening, relying solely on ambient light for the camera area.
Innovation Solution
Incorporating a light source device with a first and second light source, each independently controlled, and a light guide positioned within the in-plane hole to direct light to the area, enhancing light distribution and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If an in-plane hole structure is used for camera placement, then the display achieves borderless and full-screen appearance, but the opening area lacks light source to provide brightness
Solution Approach 1:
The light source device is segmented into a first light source and a second light source, with the first light source specifically positioned to illuminate the opening area through the functional layer opening, while the second light source provides illumination for the surrounding area. This segmentation allows independent control of lighting in different regions, solving the problem of providing brightness to the opening area without compromising the borderless display structure.
Solution Approach 2:
The patent applies local quality by providing targeted illumination to specific areas: the first light source is positioned to provide light to the opening area where the camera is located, while the second light source provides light to the surrounding display area. The light guide is also strategically positioned at the wall of the in-plane hole to direct light precisely to the opening area, ensuring that each region receives appropriate illumination quality for its specific function.
2Illumination intensity
If a light source device is added to illuminate the in-plane hole area, then brightness is provided to the opening area, but the device complexity increases
Solution Approach 1:
The functional layer serves multiple functions: it acts as part of the display structure and simultaneously provides an opening for the first light source to illuminate the opening area. The light guide structure also serves dual purposes by guiding light from the first light source to the opening area while maintaining the structural integrity of the in-plane hole. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The light guide is nested within the in-plane hole structure, with its longitudinal cross section being smaller than the in-plane hole, allowing it to fit inside without compromising the overall borderless display structure. The first light source is positioned within the opening area, and the light guide is disposed at the wall of the in-plane hole, creating a nested arrangement that maximizes space utilization and minimizes structural 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 configuration provides controlled brightness to the in-plane hole area, expanding application scenarios and user experience by ensuring illumination where previously only ambient light was used, thus addressing the lack of a light source in prior designs.
Implementation Method 1
the light guide is disposed at a wall of the in-plane hole corresponding to the first light source, and is configured to provide light emitted by the first light source to an area of the in-plane hole
Data Source
AI summary
The present invention provides a backlight module and a display device, wherein the backlight module includes an in-plane hole, and further includes a first light source and a second light source each independently driven and controlled; the light guide is disposed at a wall of the in-plane hole corresponding to the first light source, and is configured to provide light emitted by the first light source to an area of the in-plane hole under a predetermined condition. Compared with the prior art, the embodiments of the present invention solve the problem in the prior art that in-plane holes in a backlight module of a liquid crystal display device have no light source to provide brightness, thereby realizing the in-plane hole of the backlight module with brightness under a predetermined condition, and providing more scene applications of the area of the in-plane hole.