Reflective Prisms Eliminate Dark Regions in Camera Hole Displays
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Solution Overview
Problem
In display devices with narrow bezels and integrated cameras, the expansion of the liquid crystal panel into the camera region creates dark regions due to the inability of the camera hole areas to effectively transmit light, leading to reduced image quality and visibility.
Innovation Solution
A display device design featuring a light guide plate with through holes and an optical module, along with a guide panel and a reflection enhancement structure comprising reflective prisms on the light guide plate and guide panel surfaces, which redirect light to eliminate dark regions behind camera holes, enhancing image quality and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the liquid crystal panel is expanded into the camera region to realize a narrow bezel, then the visible range of the liquid crystal panel is maximized, but dark regions are created behind the camera hole
Solution Approach 1:
A reflection enhancement structure comprising reflective prisms is introduced as an intermediary element between the light guide plate and the camera hole region. This structure redirects light that would otherwise be blocked by the camera hole, reflecting it toward the camera hole area to illuminate the dark region and eliminate the brightness defect.
Solution Approach 2:
The solution addresses the two-dimensional light blocking problem by introducing a three-dimensional reflective prism structure. The prisms utilize spatial geometry to redirect light paths in multiple dimensions, converting directly blocked light into reflected light that reaches the dark region from different angles.
2Adaptability or versatility
If punched through holes or transparent regions are provided in the light guide plate, polarization plate and backlight unit for camera mounting, then the camera can be integrated, but light transmission is disrupted causing dark regions
Solution Approach 1:
The reflection enhancement structure converts the harmful effect of light blockage by the camera hole into a beneficial effect by deliberately designing reflective prisms that redirect light around and toward the camera hole region. The structure that causes the problem (camera hole blocking light) is transformed into an opportunity for light redirection and redistribution to the dark areas.
3Length of moving object
If the bezel width is minimized to expand the liquid crystal panel, then the visible range is maximized, but the camera hole regions cannot effectively transmit light
Solution Approach 1:
The reflection enhancement structure is selectively positioned and configured specifically in the camera hole region and surrounding areas of the light guide plate. The reflective prisms are locally optimized to address the specific light transmission needs of the camera hole area, with their orientation and density tailored to redirect light precisely where needed without affecting other regions of the display.
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 solution effectively prevents the creation of dark regions behind camera holes, improving the resolution, brightness, and overall performance of the liquid crystal panel by ensuring light is transmitted to the affected areas, thus maximizing the visible range and image quality.
Implementation Method 1
a reflection enhancement structure provided on any one of surfaces of the light guide plate and the guide panel that face each other. The reflection enhancement structure may include a plurality of reflective prisms disposed adjacent to a peripheral portion of the through hole of the light guide plate
Data Source
AI summary
A display device is disclosed. The display device includes a light guide plate having a through hole, an optical module disposed in the through hole, a liquid crystal panel disposed on the light guide plate, a guide panel disposed adjacent to the light guide plate, the guide panel supporting the liquid crystal panel, and a reflection enhancement structure provided on at least a surface of the light guide plate or a surface of the guide panel that faces the surface of the light guide plate, wherein reflection enhancement structure may include a plurality of reflective prisms disposed adjacent to a peripheral portion of the through hole of the light guide plate.