Light Guide Ring Backlight for Camera Aperture Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In existing display devices, the area under the screen where a camera is positioned receives no internal light source, resulting in an idle state and inability to provide a display effect due to the lack of brightness.
Innovation Solution
A display device with a backlight module that includes a light guide ring and a light source component, where the light guide ring directs light beams from a light source to the display panel area corresponding to the camera module's position, and the light source is controlled to be turned off when the camera is activated and turned on when it is not, allowing for display capability in previously idle areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an opening is provided in the backlight module for camera light reception, then the camera can receive ambient light, but the opening area cannot provide display brightness
Solution Approach 1:
The backlight module is segmented into a backlight unit and a light guide unit. The light guide ring is disposed in the opening area and includes a light receiving surface and a light emitting surface, separating the light reception function (for camera) from the light emission function (for display brightness).
Solution Approach 2:
The opening area is given dual functionality: it serves as a light reception channel for the camera through the light receiving surface, and simultaneously provides display brightness through the light guide ring's light emitting surface. This allows the same physical space to fulfill both camera operation and display functions.
2Illumination intensity
If a light source is added in the opening area to provide brightness, then display functionality is enabled, but device complexity increases
Solution Approach 1:
The light guide ring is integrated into the existing opening structure of the backlight module. The light source component is disposed on one side of the display panel and works together with the light guide ring, merging the new light guiding function with the existing backlight structure rather than adding a completely separate system.
Solution Approach 2:
The light guide ring acts as an intermediary component between the light source and the display panel area. It receives light from the light source through the light receiving surface and directs it to the display panel area through the light emitting surface, enabling brightness provision without direct coupling of the light source to the display area.
3Illumination intensity
If the light source is always on to provide brightness, then display functionality is maintained, but energy consumption increases when camera is in use
Solution Approach 1:
The light source is controlled to operate periodically or conditionally rather than continuously. The control circuitry turns the light source on when display brightness is needed and turns it off when the camera is activated and requires ambient light reception, reducing energy consumption during camera operation.
Solution Approach 2:
The lighting state is made dynamic and adjustable based on operational requirements. The light source can be switched between on and off states, and the light guide ring can direct light conditionally, allowing the system to adapt its energy consumption to the current functional need (display vs. camera operation).
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
Enables the display panel to maintain image quality and provide display functionality in areas previously unable to do so, enhancing user experience and application scenarios by providing necessary brightness to the camera module area.
Implementation Method 1
the light emitted by the light source is refracted by the microlens film to form parallel light beams perpendicular to the light receiving surface when the light transmitting hole overlaps the focal point of the microlens film
Implementation Method 2
the light receiving surface is integrally formed by at least one Fresnel lens located on the same plane
Implementation Method 3
the light guide ring is configured to direct light beams to a display panel area corresponding to the backlight hole
Implementation Method 4
a light source component configured to provide a light source for the light guide ring
Data Source
AI summary
A display device including a display panel and a backlight module are provided. The backlight module includes a backlight unit having a backlight hole; a light guide ring disposed inside the backlight hole, wherein the light guide ring comprises a light receiving surface provided away from the display panel and a light emitting surface provided near the display panel, and the light guide ring is configured to direct light beams to a display panel area corresponding to the backlight hole; and a light source component configured to provide a light source for the light guide ring.