Light Guide Plate Protrusion for Narrow Side Frame Display
Solution Overview
Problem
Conventional display devices with light guide plates (LGP) face issues of uneven light distribution, which necessitate a wider side frame to cover affected areas, making it difficult to minimize the overall width of the device.
Innovation Solution
Incorporating a light guide plate with a main body and light-incident protrusions that allow light mixing outside the side frame, reducing the need for the side frame to cover the light-mixing area and enabling a narrower side frame configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the side frame covers the light-mixing area to ensure even light distribution, then light distribution uniformity is improved, but the side frame width increases
Solution Approach 1:
The light-incident protrusion part extends the light-mixing area outward from the main body of the LGP in a direction perpendicular to the light emission direction. This dimensional extension allows the light mixing process to occur outside the side frame coverage area, resolving the contradiction by separating the light-mixing function from the side frame width constraint.
Solution Approach 2:
The light-mixing function is extracted from the main body of the LGP and relocated to the protrusion part. This extraction allows the light mixing process to occur in a dedicated region that can be positioned outside the side frame, thereby reducing the side frame width while maintaining light distribution uniformity.
2Length of stationary object
If the side frame width is reduced for device miniaturization, then device size is improved, but light distribution uniformity deteriorates
Solution Approach 1:
By extending the light-mixing area to a protrusion part in a direction perpendicular to the light emission direction, the invention enables the light mixing process to occur outside the reduced side frame width, thus maintaining light distribution uniformity while achieving device miniaturization.
Solution Approach 2:
The LGP is segmented into a main body and a light-incident protrusion part with distinct functions. The main body handles light emission while the protrusion part handles light mixing, allowing the side frame to be reduced in width while the protrusion part extends outward to perform the light-mixing function.
3Device complexity
If driving circuit boards are arranged behind the rear plate, then electrical connection is simplified, but the overall device width increases
Solution Approach 1:
The invention enables alternative arrangements of driving circuit boards by creating space through the reduced side frame width and the protrusion structure. Circuit boards can be positioned in the space created by the protrusion or in other locations that do not increase the overall device width, thus maintaining electrical connection simplicity while reducing device dimensions.
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 solution allows for a reduced side frame width and miniaturization of the display device by ensuring even light distribution through light mixing within the protrusions, while also allowing for the placement of driving circuit boards in more flexible locations, further reducing the device's thickness.
Implementation Method 1
the light beam emitted from the illuminating element may undergo a light-mixing process within the light-incident protrusion part outside the side frame
Data Source
AI summary
A display device includes a light guide plate, at least one illuminating element, a side frame, and a display panel. The light guide plate includes a main body and at least one light-incident protrusion part. The main body has a light-emitting surface. The light-incident protrusion part is connected to the main body and has a light-incident surface. The illuminating element is arranged along the light-incident surface and is capable of emitting a light beam. The light beam enters the light guide plate from the light-incident surface and leaves the light guide plate from the light-emitting surface. The side frame is located on the light guide plate. The display panel is located between the light guide plate and the side frame. The side frame and the display panel expose the light-incident protrusion part. The side frame of the display device described herein has the small width.