Reflective LCD Panel Layout for Lower Color Filter Light Loss
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Solution Overview
Problem
Existing reflective liquid crystal displays (RLCDs) suffer from high light loss rates due to light being filtered twice by the color filter layer, reducing light utilization and increasing the path length, which is detrimental to eye health and display efficiency.
Innovation Solution
A liquid crystal display panel design with a color filter layer directly on the reflective layer, utilizing reflective materials in the color filter layer to minimize light path length and reduce filtering, combined with a transparent substrate to enhance light reflectivity and utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a reflective layer is added to create a reflective liquid crystal display, then blue light emission is reduced and eye protection is improved, but light loss rate increases and light utilization decreases
Solution Approach 1:
The patent combines the color filter layer and reflective layer into a single integrated structure on the same substrate. The color filter layer is positioned between the liquid crystal layer and the reflective layer, allowing light to pass through the color filter once, be reflected by the reflective layer, and return through the same color filter without requiring a second filtration path. This merging eliminates the need for separate color filter layers on both substrates and reduces overall light loss.
Solution Approach 2:
The single color filter layer serves multiple functions: it filters light wavelengths once, works in conjunction with the reflective layer to redirect light back through the same filtration path, and eliminates the need for duplicate color filter layers. This multi-functional design reduces the total number of components and minimizes light absorption losses that would occur with multiple filtration stages.
2Manufacturing precision
If light passes through the color filter layer twice (forward and backward), then complete color filtration is achieved, but light loss rate increases
Solution Approach 1:
The patent merges the color filter layer with the reflective layer structure, positioning the color filter between the liquid crystal layer and the reflective layer on the same substrate. This configuration allows light to be filtered once on its way to the reflective layer and then reflected back through the same filtered path, achieving complete color filtration while minimizing light loss by avoiding a second separate filtration stage.
Solution Approach 2:
The design ensures continuous useful action by allowing light to pass through the color filter layer once, be reflected by the reflective layer, and return through the same color filter without additional filtration barriers. This continuous path maintains color filtration accuracy while preserving light intensity by eliminating redundant filtration steps that would increase light loss.
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 design reduces light loss, increases light utilization, and enhances display efficiency while protecting eye health by minimizing the need for a backlight and reducing harmful blue light exposure.
Implementation Method 1
A side of the first substrate facing the liquid crystal layer is configured with a reflective layer... the reflective layer may reflect the light, which is filtered by the color filter layer, to the second substrate
Data Source
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AI summary
The present disclosure provides a liquid crystal display panel and a liquid crystal display device, including a first substrate (310); a second substrate (320); a liquid crystal layer (330), disposed between the first substrate and the second substrate; a reflective layer (311), disposed on a side of the first substrate (310) facing the liquid crystal layer; and a color filter layer (312), disposed on the first substrate and covering the reflective layer (311). When light passes through the second substrate (320) reaching the color filter layer (312), the reflective layer is configured to reflect the light, which is filtered by the color filter layer, to the second substrate. The liquid crystal display panel and the liquid crystal display device emit light without a light source, having a reduced loss rate of the light, an increased light utilization rate, and an increased light reflectivity.