Display Device Light Guide Mask Body Luminance Equalization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional display devices face issues with unequal luminance levels for different designs, leading to potential damage in visual quality due to different light paths for first and second designs, and difficulties in selective and independent display due to light leakage and insufficient isolation between light sources.
Innovation Solution
A display device with a light guide body and mask body, featuring a reflector with a first design and light-transmissive/light-blocking portions, respectively, and a separator wall with light-blocking properties to equalize luminance and prevent light leakage between light sources, allowing for independent display of first and second designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional display devices use separate light paths for first and second designs, then both designs can be displayed, but the luminance levels become unequal causing visual quality degradation
Solution Approach 1:
The patent adjusts the luminance parameters of the light sources to achieve equal display luminance. Specifically, it controls the luminance of the first light source and second light source, and adjusts the light transmission characteristics of the light guide body to equalize the luminance of both designs when displayed simultaneously or alternately.
2Adaptability or versatility
If conventional display devices use separate light paths for first and second designs, then both designs can be displayed, but light leakage occurs preventing selective and independent display
Solution Approach 1:
The patent segments the light transmission paths by introducing a light guide body with distinct light transmission portions and light blocking portions. The light guide body is divided into a first light transmission portion for guiding light from the first light source and a second light transmission portion for guiding light from the second light source, with a light blocking portion preventing cross-contamination of light paths.
Solution Approach 2:
The light guide body acts as an intermediary element between the light sources and the display surface. It includes a light blocking portion that mediates and prevents light from the first light source from reaching the second design area and vice versa, thereby eliminating light leakage and enabling selective independent display of either design.
3Reliability
If conventional display devices use simple light guiding structures, then the device complexity is low, but the luminance equalization and light isolation performance are insufficient
Solution Approach 1:
The light guide body is designed with different local properties: a first light transmission portion with specific light guiding characteristics for the first design, a second light transmission portion with corresponding characteristics for the second design, and a light blocking portion with light blocking properties. Each portion is optimized for its specific function to achieve overall luminance equalization and light isolation.
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 solution ensures equalized luminance for both designs, improving visual quality by preventing light leakage and enabling selective display of first and second designs, thereby enhancing the display device's performance.
Implementation Method 1
a light guide body which includes a reflector having a shape of a first design, guides first light emitted by the first light source
Implementation Method 2
reflects the first light by the reflector to display the first design
Implementation Method 3
transmits, through the light-transmissive portion, second light emitted by the second light source
Implementation Method 4
blocks the second light by the light-blocking portion
Implementation Method 5
a separator wall which separates the first light source and the second light source, and has a light-blocking property
Data Source
AI summary
A display device that includes first and second light sources, a light guide body, and a mask body is provided. The light guide body includes a reflector that has a shape of a first design. The light guide body guides first light emitted by the first light source and reflects the first light by the reflector to display the first design. The mask body includes a light-transmissive portion and a light-blocking portion. The light-transmissive portion has a shape of a second design, and the light-blocking portion is a portion other than the light-transmissive portion. The light-transmissive portion transmits second light emitted by the second light source to display the second design. The first design is displayed at a first display luminance, and the second design is displayed at a second display luminance. The first display luminance and the second display luminance are substantially equalized.