Display Diffusion Film Composition for Wide-View Chromaticity
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Solution Overview
Problem
Large-sized display panels experience chromaticity deviation due to wide viewing angles, which existing methods to address this issue often compromise transmittance and resolution.
Innovation Solution
A composition comprising scattering particles with modified surfaces and a film structure that includes a diffusion layer to improve chromaticity deviation by enhancing light uniformity and scattering performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixel design methods (e.g., multi-domain pixel structure) are used to improve chromaticity deviation, then chromaticity viewing angle is improved, but transmittance and resolution are reduced
Solution Approach 1:
The patent introduces a wide view film as an intermediary component between the liquid crystal layer and the color filter layer. This film contains scattering particles that act as mediators to redistribute light paths, thereby improving chromaticity viewing angle without requiring changes to the pixel structure that would compromise transmittance and resolution
Solution Approach 2:
The patent changes the optical parameters of the display system by introducing a film with specific scattering properties. The scattering particles in the wide view film have controlled size distributions and refractive indices that optimize light scattering while maintaining high transmittance, thus improving chromaticity deviation without sacrificing other performance parameters
2Adaptability or versatility
If existing methods are used to improve chromaticity deviation, then viewing angle performance is improved, but device complexity increases
Solution Approach 1:
The patent extracts the chromaticity viewing angle improvement function from the complex pixel structure and relocates it to a separate wide view film layer. This extraction allows the pixel structure to remain simple while the film provides the necessary optical compensation through scattering particles
Solution Approach 2:
The wide view film serves multiple functions simultaneously: it provides chromaticity viewing angle improvement, maintains high transmittance, and preserves resolution. The scattering particles in the film perform universal optical functions that benefit multiple display performance parameters without requiring additional complex structures
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 solution effectively reduces chromaticity deviation at large viewing angles while maintaining high transmittance and resolution in display panels.
Implementation Method 1
a diffusion layer which is the film as described in the second aspect
Implementation Method 2
Surfaces of the scattering particles are grafted with a modifying agent having a structure represented by a general formula (I)
Data Source
AI summary
Disclosed are a composition, a film, a display panel, and a display device. The composition includes, in parts by mass, 50 to 100 parts of a resin matrix; 20 to 100 parts of a multifunctional reactive monomer; 1 to 10 parts of an initiator, 5 to 30 parts of scattering particles; 100 to 500 parts of a solvent; and 1 to 10 parts of an adjuvant. Surfaces of the scattering particles are grafted with a modifying agent. The composition is carried out thermal curing and/or photocuring to prepare a film used as a diffusion layer of the display panel.