Spacer Placement for Liquid-Crystal Gap Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In liquid-crystal devices with sub-pixels arranged in island or mosaic types, the spacer used to control the liquid-crystal gap often disrupts light transmittance and opening ratio due to its increased size and height, leading to reduced display quality.
Innovation Solution
The optical structure features a spacer disposed on the light filter layer, with a specific arrangement that allows for a larger opening area and better light transmittance, thereby reducing the spacer's impact on the liquid-crystal device's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the height and size of the spacer are increased to control the liquid-crystal gap, then the liquid-crystal gap control is improved, but the area in wrong orientation increases and the opening area decreases
Solution Approach 1:
The spacer is positioned on the light shielding layer rather than on the insulating layer between sub-pixels, changing the spatial dimension of spacer placement. This allows the spacer to control the liquid-crystal gap effectively while being located in an area that does not interfere with the opening area of adjacent sub-pixels, thus resolving the contradiction between gap control precision and opening area maintenance
2Manufacturing precision
If the height and size of the spacer are increased to control the liquid-crystal gap, then the liquid-crystal gap control is improved, but the light transmittance decreases
Solution Approach 1:
The spacer function is extracted from the insulating layer location and relocated to the light shielding layer. This separation allows the spacer to perform its gap control function independently without interfering with the light transmission path through the sub-pixel openings, thus maintaining light transmittance while achieving effective gap control
3Manufacturing precision
If the height and size of the spacer are increased to control the liquid-crystal gap, then the liquid-crystal gap control is improved, but the opening ratio decreases
Solution Approach 1:
By relocating the spacer to the light shielding layer (spatial dimension change), the spacer's projection area no longer overlaps with the active opening areas of sub-pixels. This allows the opening ratio to be maintained at higher levels while the spacer still effectively controls the liquid-crystal gap through its new positioned location
Data Source
AI summary
An electronic device includes a substrate, an organic layer including a first opening and a second opening arranged in a first direction, a first insulating layer including a first portion and a second portion arranged in the first direction and connected to each other, and a first spacer between the first opening and the second opening. The second portion has a first length, the first spacer has a second length, the organic layer between the first opening and the second opening has a third length, the first length is greater than or equal to the second length and less than or equal to the third length, and a ratio of a first distance between the first spacer and the first opening to a second distance between the first spacer and the second opening is greater than or equal to 0.7 and less than or equal to 1.3.