Metal Grating Layer Integration in Dual View Display Panels
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Solution Overview
Problem
Dual view field display panels with micro grating structures have a lower aperture opening ratio, leading to suboptimal backlight utilization and complex manufacturing processes.
Innovation Solution
Incorporating a metal grating layer within the array substrate, which reflects light back to the backlight module, improving backlight utilization and simplifying the manufacturing process by integrating the grating layer with existing metal layers or forming it using a metal layer on the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a multilayer micro grating structure is manufactured within a liquid crystal cell, then the dual view field display panel can effectively control light transmission angles, but the aperture opening ratio is reduced and the manufacturing process becomes complex
Solution Approach 1:
The patent merges the grating structure manufacturing into the existing array substrate fabrication process. The grating layer is formed simultaneously with the array substrate's metal layers through the same patterning and deposition processes, eliminating the need for separate grating fabrication steps and reducing overall device complexity while maintaining precise light transmission angle control
Solution Approach 2:
The metal layers in the array substrate serve dual functions: as electrical connection layers for the display circuitry and as the grating structure for light transmission control. This multi-functionality approach eliminates the need for dedicated grating manufacturing steps, simplifying the overall manufacturing process while achieving precise optical control
2Manufacturing precision
If a multilayer micro grating structure is manufactured within a liquid crystal cell, then the dual view field display panel can effectively control light transmission angles, but the aperture opening ratio is reduced
Solution Approach 1:
The grating structure is merged with the array substrate's existing metal layers, allowing the grating pattern to be formed within the same structural framework. This integration enables the grating lines to share the substrate area with electrical conductors, thereby maintaining a higher aperture opening ratio compared to separate grating structures that would occupy additional space
Solution Approach 2:
The grating structure is implemented only in specific regions where light transmission control is needed, while other regions maintain full transparency for backlight passage. This localized approach ensures precise light transmission angle control at the grating locations without unnecessarily reducing the overall aperture opening ratio across the entire display panel
3Manufacturing precision
If a separate grating layer is fabricated, then light transmission can be controlled, but the manufacturing process becomes more complex
Solution Approach 1:
The grating layer fabrication is merged with the array substrate manufacturing process. Both structures are formed using the same sequence of patterning, deposition, and etching steps, eliminating the need for separate grating fabrication equipment and process steps, thereby simplifying manufacturing while achieving precise light transmission control
Solution Approach 2:
The metal deposition and patterning processes serve dual purposes: creating electrical connection layers for the display circuitry and forming the grating structure for optical control. This universal use of manufacturing processes eliminates redundant fabrication steps and simplifies the overall manufacturing workflow
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
Enhances backlight utilization and streamlines the manufacturing process by controlling light transmission and eliminating the need for separate grating layer fabrication.
Implementation Method 1
Incorporating a metal grating layer within the array substrate, which reflects light back to the backlight module
Data Source
AI summary
Embodiments of the present application provide a dual view field display panel and a dual view field display apparatus. The dual view field display panel includes first display regions and second display regions alternatively arranged in a row direction and/or a column direction. The dual view field display panel further includes a first substrate; a second substrate arranged opposite to the first substrate; a grating structure between the first substrate and the second substrate. The grating structure includes a first grating layer made of metal and located within the first substrate, and the first grating layer is provided at one side of the first substrate facing the second substrate.