Display Module Protruding Ridges Side Light Transmission
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Solution Overview
Problem
Existing mobile terminal display modules have limited display area due to light rays being blocked by the adhesive frame and back plate, preventing light transmission at the side surfaces and thus restricting image display on the sides.
Innovation Solution
A display module with a light guiding plate featuring protruding ridges as light transmitting members at its edges, where the liquid crystal panel covers these ridges, allowing light to exit from the sides and extend the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the adhesive frame and back plate are used to fix the light guiding plate, then the structural stability is improved, but the display area is reduced due to light blockage at side surfaces
Solution Approach 1:
The light guiding plate is segmented by adding protruding ridges that divide the light transmission path into multiple channels: central light transmission through the main body and lateral light transmission through the ridges. This segmentation allows different regions to serve different functions, enabling side surface display while maintaining structural integrity.
Solution Approach 2:
The invention transitions from traditional planar light transmission to three-dimensional light transmission by adding protruding ridges that extend vertically from the light guiding plate. This dimensional change creates new light transmission paths at the side surfaces, expanding the display area beyond the traditional flat display plane.
2Area of stationary object
If the light guiding plate transmits light at side surfaces, then the display area is extended, but the light transmission uniformity deteriorates
Solution Approach 1:
Different regions of the light guiding plate are given different optical properties: the main body provides uniform central light transmission, while the protruding ridges provide lateral light transmission. The optical sheets are also positioned differently relative to these regions, with some sheets covering the ridges and others covering the main body, creating locally optimized light transmission characteristics.
Solution Approach 2:
The invention changes the geometric parameters of the light guiding plate by adding protruding ridges with specific dimensions (height, width, spacing). By optimizing these parameters, the light transmission uniformity is improved while maintaining the extended display area. The height and width of the ridges are carefully controlled to ensure uniform light distribution across both the central and lateral display regions.
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 image display on the sides of the display module by transmitting light through the protruding ridges, thereby increasing the display area and angle of the display module.
Implementation Method 1
a light guiding plate including a light incidence surface and a light exit surface, wherein protruding ridges which are light transmitting members are arranged at edges of the light exit surface
Implementation Method 2
the light guiding plate includes a light incidence surface, a light exit surface, and a reflective surface, the light source is arranged face to the light incidence surface, light rays emitted by the light source enter the light guiding plate at the light incidence surface, are reflected at the reflective surface
Data Source
AI summary
The disclosure provides a display module and a mobile terminal, and the display module includes a liquid crystal panel and a backlight module, wherein the backlight module includes: a light guiding plate including a light incidence surface and a light exit surface, wherein protruding ridges which are light transmitting members are arranged at edges of the light exit surface; a set of optical sheets arranged on the light exit surface of the light guiding plate and engaged between the protruding ridges; and a light source arranged opposite to the light incidence surface, wherein the liquid crystal panel is arranged on the side of the set of optical sheets away from the light exit surface, and the liquid crystal panel is arranged to cover the surfaces of the protruding ridges.