Pixel Element with Dynamic Charged Particles for Contrast
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Solution Overview
Problem
Current display panels with circular polarizer sheets suffer from reduced brightness and efficiency due to constant light shielding, degrading image contrast and service lifetime.
Innovation Solution
A pixel element design featuring a base substrate with a control electrode, adjustment layer, and transparent electrode in the non-display area, where charged particles move under controlled electric fields to block or transmit light, improving contrast without shielding light when not in use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a circular polarizer sheet is used in the display panel, then image contrast is improved, but brightness and light emission efficiency are reduced
Solution Approach 1:
The patent applies a dynamic principle by using movable charged particles in the adjustment layer that can be repositioned via electric fields. When displaying, particles move to block ambient light from the backside, improving contrast. When not displaying, particles are positioned to minimize light blocking, maintaining brightness. This dynamic particle arrangement replaces the static light-blocking function of the circular polarizer sheet, achieving high contrast during display while preserving brightness during non-display states.
Solution Approach 2:
The patent changes the optical parameters of the non-display area dynamically by controlling the position of charged particles through applied electric fields. By varying the particle distribution, the light-blocking parameter is adjusted: high blocking during display for contrast, low blocking during non-display for brightness. This parameter change approach eliminates the need for a fixed circular polarizer sheet that constantly reduces brightness.
2Measurement precision
If a circular polarizer sheet is constantly shielding light, then image contrast is maintained, but service lifetime is reduced
Solution Approach 1:
The patent replaces the static circular polarizer sheet with a dynamic particle-based adjustment layer. The charged particles can be moved to different positions based on display state, allowing the system to adapt its light-blocking behavior. During non-display periods, particles are positioned to minimize light interference, reducing stress on the display structure and potentially extending service lifetime compared to constant shielding by a polarizer sheet.
3Measurement precision
If charged particles are moved to block light, then image contrast is improved, but light emission efficiency is reduced
Solution Approach 1:
The patent uses dynamically controllable charged particles that only block light when necessary for display. During non-display states, particles are repositioned to allow maximum light transmission, minimizing energy loss. This dynamic control ensures that light emission efficiency is maintained during non-display periods while achieving high contrast during active display, unlike static polarizer sheets that continuously block light and waste energy.
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
Enhances image contrast and maintains brightness when the pixel element is not displaying, thus improving light emission efficiency and extending the service lifetime of the display panel by eliminating the need for a circular polarizer sheet.
Implementation Method 1
the adjustment layer includes charged particles configured to move to the control electrode under a control of a first electric field, and to move to the transparent electrode under a control of a second electric field, wherein the first electric field and the second electric field are electric fields created after signals are applied to the control electrode and the transparent electrode respectively
Data Source
AI summary
Disclosed are a pixel element, a method for fabricating same, a display control method, a display panel. The pixel element includes a base substrate, display and non-display areas on the base substrate, a control electrode, an adjustment layer, a transparent electrode in the non-display area, the transparent electrode and the adjustment layer are arranged in a stack, the control electrode is at the interface between display and non-display areas, and surrounds the adjustment layer, and there is a gap area between the control electrode and the adjustment layer; and the adjustment layer includes charged particles configured to move to the control electrode and the transparent electrode under control of first and second electric fields, the first and second electric fields are created after signals are applied to the control electrode and the transparent electrode, and direction of the first electric field is opposite to direction of the second electric field.