Light Path Controlling Member for Display Moire Pattern Suppression
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Solution Overview
Problem
Moire patterns occur when shooting pictures of display panels using cameras, leading to obstacles in inspecting defects such as display stains.
Innovation Solution
A display device equipped with a light path controlling member on its front surface, featuring separation walls and light path portions with a period different from that of the pixel regions, breaks the periodicity of the picture output and prevents moire patterns from forming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a camera is used to shoot pictures of display panels for inspection, then picture quality and defect detection capability are improved, but moire patterns occur due to periodic interference between pixel regions and camera sensors
Solution Approach 1:
A light path controlling member is introduced as an intermediary component between the display panel and the camera. This member includes a plurality of light path portions with different periods than the pixel regions, which modifies the light path without altering the display panel or camera structure, thereby preventing moire pattern formation while maintaining inspection capability
Solution Approach 2:
The light path controlling member changes the periodic parameters of light transmission by incorporating light path portions with periods different from those of the pixel regions. This parameter modification breaks the periodic interference condition that causes moire patterns, allowing clear picture capture for defect inspection
2Stability of the object's composition
If pixel regions are arranged in a regular lattice pattern for display, then display uniformity and color consistency are improved, but periodicity causes moire patterns when captured by camera sensors
Solution Approach 1:
The light path controlling member serves as a mediator that preserves the regular lattice arrangement of pixel regions for display uniformity while modifying the transmitted light pattern to prevent moire formation during camera capture
Solution Approach 2:
By introducing light path portions with different periodic parameters, the system maintains the stable periodic structure of pixel regions for display purposes while transforming the optical parameters to eliminate periodic interference with camera sensors
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 effectively prevents moire patterns in shot pictures, allowing for accurate inspection and improving color uniformity across different viewing directions.
Implementation Method 1
a light path controlling member located on a front surface of the display panel and transmitting the picture output from the display panel
Data Source
AI summary
A display device includes a display panel including a plurality of pixel regions and displaying a picture; and a light path controlling member located on a front surface of the display panel and transmitting the picture output from the display panel, wherein the light path controlling member includes a plurality of separation walls and a plurality of light path portions between the plurality of separation walls, and wherein a period of the light path portion is different from a period of the pixel region.