Liquid Crystal Display Module Light Guide Plate Incident Face
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Solution Overview
Problem
Conventional liquid crystal display modules experience light loss due to the space between the light guide plate and the spacer tape, which is caused by the larger size of the light guide plate's incident face relative to the display area.
Innovation Solution
A liquid crystal display module configuration where the light guide plate is shaped to have a thicker incident face than the opposing face, with a light shielding member and a reflection member arranged along the light guide plate to minimize light loss, and the reflection member is formed in a planar or wedge shape to match the light guide plate's thickness, reducing the need for additional components and allowing for a thinner module design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the incident face of the light guide plate is configured to be large in size to accommodate the LED light source, then the light source can be properly mounted, but a space is formed between the light guide plate and the spacer tape causing light loss
Solution Approach 1:
The patent converts the harmful space between the light guide plate and spacer tape into a beneficial reflection zone by adding a reflection member. This reflection member redirects the light that would otherwise be lost back toward the display area, transforming the harmful gap into a useful light-guiding feature that improves overall illumination efficiency
Solution Approach 2:
The reflection member acts as an intermediary element between the light guide plate and the spacer tape. It mediates the interaction by capturing stray light in the gap and redirecting it, thereby eliminating the harmful effect of the space while maintaining the necessary structural clearance
2Illumination intensity
If the incident face of the light guide plate is made larger than the display area, then the LED can be accommodated, but additional components like spacer tape and light shielding tape are required increasing device complexity
Solution Approach 1:
The patent merges the functions of multiple components into a single integrated light guide plate structure. The light guide plate is designed with varying thickness to simultaneously serve as the light guiding element, the structural support, and the light management component, eliminating the need for separate spacer tape and light shielding tape
Solution Approach 2:
The light guide plate is designed to perform multiple functions: it guides light from the LED, provides structural support, manages light distribution through its varying thickness, and eliminates the need for separate shielding and spacing components. This multi-functional design reduces overall device complexity
3Length of stationary object
If the light guide plate is made thinner to satisfy thinness requirements, then the overall module can be thinner, but the incident face size is constrained limiting light source options
Solution Approach 1:
The patent transitions from a uniform two-dimensional light guide plate to a three-dimensional structure with varying thickness. By introducing the thickness dimension as a variable parameter, the light guide plate can maintain a thin overall profile while providing a larger effective incident face area through strategic thickening at the light source interface
Solution Approach 2:
The light guide plate features non-uniform thickness distribution with the incident face portion made thicker to accommodate the LED and the display area portion kept thinner for overall module thinness. This local variation in quality allows simultaneous satisfaction of both thickness and incident face size requirements
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 configuration effectively eliminates light loss from the light source and allows for a thinner liquid crystal display module by optimizing the light guide plate shape and arrangement of light shielding and reflection members.
Implementation Method 1
a reflection member arranged on the light shielding member... the reflection member is formed along the light guide plate
Data Source
AI summary
To provide a liquid crystal display module that eliminates the loss of light emitted from a light source. The present invention provides a liquid crystal display module including: a liquid crystal display panel; and a backlight, wherein the liquid crystal display panel includes an upper polarization plate and a lower polarization plate, the backlight is configured by a light source and a light guide plate, the light guide plate is configured in such a manner that the thickness of an incident face where light of the light source enters is larger than that of a portion opposed to the lower polarization plate, a light shielding member and a reflection member arranged on the light shielding member are provided at portions, of the liquid crystal display panel, corresponding in the upper direction to the incident face of the light guide plate, and the reflection member is formed along the light guide plate.