FIPEL Backlight Sequential Color Emission
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Solution Overview
Problem
Current LCD display panels require a large number of components and control circuits due to the need for three sub-pixels per pixel group, which increases complexity and power consumption.
Innovation Solution
Implementing Field Induced Polymer Electroluminescence (FIPEL) technology to emit colored light sequentially, allowing a single pixel to display combinations of colors, thereby reducing the number of sub-pixels and control circuits by two-thirds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If three sub-pixels per pixel group are used to display colors, then color accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies periodic action by using a single pixel that sequentially displays red, green, and blue colors in cycles. The backlight alternates between emitting red, green, and blue light, and the pixel responds accordingly. This temporal sequencing creates the perception of full-color capability while using only one physical pixel structure, thereby reducing device complexity while maintaining color accuracy through persistence of vision.
2Measurement precision
If three sub-pixels per pixel group are used to display colors, then color accuracy is improved, but power consumption increases
Solution Approach 1:
The patent merges the function of three separate sub-pixels into a single pixel. Instead of having three independent sub-pixels each requiring separate control circuits and power, one pixel performs all three color functions sequentially. This consolidation reduces power consumption by eliminating redundant control circuitry and reducing the total number of active components while maintaining full-color display capability through time-sequential color switching.
3Device complexity
If a single pixel displays sequential colors, then device complexity is reduced, but the ability to display multiple colors simultaneously is worsened
Solution Approach 1:
The patent transitions from spatial color differentiation (three sub-pixels side-by-side) to temporal color differentiation (one pixel switching colors over time). By adding the time dimension to color display, the system achieves full-color capability with a single pixel. The human visual system integrates the rapidly switching colors into a perception of simultaneous color presence, effectively using the time dimension to compensate for the reduced spatial complexity.
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
This approach simplifies the display panel structure, reduces component count, and decreases power consumption while maintaining color accuracy and brightness, as the human eye perceives the sequential colors as a unified color due to persistence.
Implementation Method 1
Implementing Field Induced Polymer Electroluminescence (FIPEL) technology to emit colored light sequentially
Implementation Method 2
the human eye perceives the sequential colors as a unified color due to persistence
Data Source
AI summary
A display system, having an emissive body, varying light emitted from the surface so that different temporally adjacent time periods see the emissive body outputting different primary colors. A liquid crystal display can then modulate the different primary colors that have been output at different times. In one embodiment, the different times modulate red green and blue colors. In another embodiment, the different times modulate red green blue and white colors. The emissive body can be a FIPEL type device. Light can be both color varied and also color temperature controlled. The light color is changed by changing a frequency used to drive the body.