Light-Guide Positioning Module for Thin-Frame Displays
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Solution Overview
Problem
Conventional positioning signal transmitter modules are too thick, preventing display devices with cursor-controllable functions from achieving a thin-frame design.
Innovation Solution
A positioning signal transmitter module utilizing a light-guide element with strategically positioned light sources and micro-structures to emit light signals, reducing the module's thickness and enabling a thin-frame structure in display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If conventional positioning signal transmitter modules with DIP LEDs are used, then the module can provide positioning signals in various directions, but the module thickness becomes too large (e.g., 10 mm) to enable thin-frame design
Solution Approach 1:
The patent transitions from conventional DIP LEDs that emit light in various directions to a flat panel structure with light guides and light-emitting elements arranged in specific patterns. By changing the spatial dimensionality from three-dimensional DIP LED emission to a two-dimensional flat panel with controlled light paths, the module achieves thinness while maintaining directional light emission capability through the light guide structure
Solution Approach 2:
The patent introduces light guides as intermediary elements between the light sources and the external environment. These light guides control and direct the light emission, replacing the need for DIP LEDs to emit in various directions directly. The light guides act as mediators that enable thin-module design while preserving the positioning signal transmission function through controlled light directionality
2Length of stationary object
If the module thickness is reduced to enable thin-frame design, then the display device can achieve thin-frame structure, but the light emission uniformity and positioning accuracy may be compromised
Solution Approach 1:
The patent employs light-blocking areas with different transmittance characteristics in specific locations within the light guide structure. By creating local variations in light transmission properties (different transmittance rates in different regions), the design achieves uniform overall light emission despite the reduced module thickness. This local quality differentiation compensates for the thickness reduction and maintains positioning accuracy
Solution Approach 2:
The patent modifies the transmittance parameter of the light-blocking areas to optimize light distribution. By carefully controlling the transmittance rate of specific regions within the light guide, the system achieves uniform light emission across the panel while maintaining the thin profile. This parameter optimization ensures that the reduced thickness does not compromise light emission uniformity or positioning precision
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 module achieves a significantly reduced thickness, allowing for a thin-frame design in display devices while maintaining accurate cursor control and improved light emission uniformity.
Implementation Method 1
The light source is configured to provide a light signal to its corresponding light-incidence surface. The light signal emits out from the light-emission surface.
Data Source
AI summary
A positioning signal transmitter module, adapted to use with a cursor-controlling device corporately for a cursor controlling, includes a light-guide element and at least one light source. The light-guide element has a light-emission surface and at least one light-incidence surface adjacent to the light-emission surface. The light source is disposed beside the light-incidence surface(s), and each light source is configured to provide a light signal to its corresponding light-incidence surface. The light signal emits out from the light-emission surface. Moreover, an electronic product with a cursor-controllable function using the aforementioned positioning signal transmitter module is also provided.