Liquid Crystal Display Transparent Window Spacer Design
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in maintaining high transparency in areas overlapping cameras, which affects imaging and requires complex manufacturing processes, including the need for precise alignment and sealing around through holes for photoreceivers.
Innovation Solution
A liquid crystal display device design featuring a transparent substrate with a light-shielding layer and spacers in a frame-shaped area between the display and transparent areas, allowing for higher transparency in the window area while maintaining cell gap uniformity and simplifying manufacturing by eliminating the need for through holes and additional sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If through holes are created for photoreceivers in the transparent area, then camera imaging is enabled, but manufacturing complexity increases due to precise alignment and sealing requirements
Solution Approach 1:
The patent extracts the photoreceiver from the transparent area by providing it outside the display panel structure. The transparent area maintains full transparency without through holes, while the photoreceiver is positioned separately to receive light through the transparent area, thus eliminating the need for complex through-hole formation and sealing processes.
Solution Approach 2:
The patent introduces a light-shielding layer as an intermediary element that defines the transparent area and separates it from the display area. This light-shielding layer acts as a mediator that allows the transparent area to maintain high transparency for camera imaging while preventing light leakage to the display area, thus simplifying the overall structure.
2Adaptability or versatility
If through holes and additional sealing are added for photoreceivers, then photoreceiver integration is achieved, but product yield decreases due to manufacturing complexity
Solution Approach 1:
The photoreceiver is extracted from the internal structure of the display panel and positioned outside. This eliminates the need for through-hole formation and complex sealing processes, thereby simplifying the manufacturing process and improving product yield while still achieving photoreceiver integration.
Solution Approach 2:
The transparent area serves multiple functions: it allows light transmission for camera imaging and maintains display functionality in surrounding areas. The light-shielding layer provides both structural definition and light management, reducing the need for additional components and simplifying manufacturing.
3Illumination intensity
If light-shielding layer is formed in frame area, then transparency in window area is enhanced, but manufacturing precision requirements increase
Solution Approach 1:
The light-shielding layer is applied locally only in the frame area surrounding the transparent area, rather than across the entire panel. This localized application enhances transparency in the window area while minimizing the precision requirements compared to forming through holes and seals in the transparent area itself.
Data Source
AI summary
According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, a facing area, a liquid crystal layer, and a first spacer. The facing area includes a first area for displaying an image, a second area, and a frame-shaped frame area. The second substrate includes a light-shielding layer. The second area is an area having higher transparency than transparency of the first area. The liquid crystal layer is located in the second area, the frame area, and the first area. The first spacer is located in the second area and is provided on the first substrate or the second substrate.