Field-Sequential Display Panels Suppress Color Break
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Solution Overview
Problem
Field-sequential color-type image display devices face issues with color break and limited brightness due to the sequential switching of display colors, which can be exacerbated by movement and changes in the observer's viewpoint, and existing solutions using two display panels only achieve the same brightness as single-panel devices.
Innovation Solution
An image display device comprising a first and second display panel, where transmittance or reflectance is controlled based on image signals, and a light irradiation unit that sequentially drives both panels with color light signals, switching the image signal for one panel during the operation of the other to reduce color mixing and improve brightness by continuous irradiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If two display panels are used to accelerate image switching, then color break is suppressed, but brightness remains limited to the same level as single-panel devices
Solution Approach 1:
The patent implements continuous light irradiation to both display panels simultaneously, ensuring that while one panel displays a color image, the other panel is being prepared with light exposure. This continuous action eliminates the interruption in light exposure that occurs in sequential switching systems, thereby maintaining high brightness levels while suppressing color break through the dual-panel architecture.
2Device complexity
If sequential driving of display panels is used, then device complexity is reduced, but brightness is limited
Solution Approach 1:
The patent divides the display system into two separate display panels that can be driven independently but simultaneously. Each panel receives light irradiation and image signals in a coordinated manner, allowing the system to maintain relatively simple individual panel structures while achieving improved overall brightness through the combined output of both panels.
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 suppresses color break and enhances brightness by ensuring continuous color light exposure to both panels, improving the color gamut and maintaining high-frequency color changes beyond the frame frequency, thus addressing the limitations of existing technologies.
Implementation Method 1
a first display panel and a second display panel in which transmittance or reflectance of light is controlled on the basis of an image signal
Implementation Method 2
a first display panel and a second display panel in which transmittance or reflectance of light is controlled on the basis of an image signal
Data Source
AI summary
An image display device includes: a first display panel and a second display panel in which transmittance or reflectance of light is controlled on the basis of an image signal; and a light irradiation unit that irradiates the first display panel and the second display panel with light, wherein the first display panel and the second display panel are sequentially driven by image signals corresponding to a plurality of color light beams, and in a period in which one of the first display panel and the second display panel is driven by an image signal corresponding to any one of the plurality of color light beams, an image signal for driving the other display panel is switched.