Reflection type device based on polymer dispersed liquid crystal and manufacturing method thereof
By adding black positive didirectional dye to the liquid crystal slurry of the reflective display device and reflecting ambient light using the reflective layer, the problem of low reflectivity of PDLC white state is solved, and a high brightness and high contrast white display is achieved, and the response speed is improved.
CN119667987APending Publication Date: 2025-03-21CHENGDU HUAYUE INTELLIGENT TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202510119346.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2025-03-21
AI Technical Summary
Technical Problem
In the existing reflective display technology, PDLC has a low white reflectivity, which is difficult to meet market demand, and has a slow response speed, which limits its development.
Method used
A reflective device based on polymer dispersed liquid crystal is adopted. By adding black positive didirectional dye to the liquid crystal slurry, and the absorption effect of the dye is used to appear black when it is not powered on. When it is powered on, a reflective layer reflects ambient light to achieve white display.
Benefits of technology
It improves the white reflectivity of PDLC, enhances the brightness and clarity of the white display, achieves higher contrast, and has faster response speed, suitable for displaying dynamic content.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention provides a reflective device based on polymer dispersed liquid crystal and a manufacturing method thereof. The reflective device comprises an upper substrate, a lower substrate is arranged at the bottom of the upper substrate, liquid crystal slurry is arranged between the upper substrate and the lower substrate, the liquid crystal slurry comprises a polymerizable monomer and a dichroic dye, the upper substrate comprises a substrate, and a plurality of pixelated electrodes are arranged on the substrate. According to the device, black polymer dispersed liquid crystals (PDLC) are adopted as liquid crystal materials, the white reflectivity of the PDLC is improved, and meanwhile, a metal reflecting layer or a second reflecting layer is adopted to replace a black substrate. The white reflection of the device mainly depends on the reflection of the reflecting layer, and the reflecting layer is a metal reflecting layer or a second reflecting layer instead of the back scattering of polymer dispersed liquid crystal (PDLC), so that the ambient light can be more effectively utilized for reflecting display, and the device can obtain higher white reflectivity and higher contrast ratio.
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