Transparent Display Electrodes for High Transparency and Low Resistance
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Solution Overview
Problem
Conventional display technologies face challenges in achieving a full-screen display with high transparency due to the need for camera and sensor installations, which disrupts the screen consistency, and the use of transparent conductive materials like ITO struggles with high electrode resistance and reduced transparency when handling high currents.
Innovation Solution
A display panel design featuring a substrate with a pixel circuit, first and second electrodes, and scanning and data lines, where the scanning line controls pixel circuit activation and the data line provides drive current for sub-pixels, using transparent conductive materials with high transmittance to reduce load and enhance transparency, and a full-surface cathode to share current among sub-pixels, thereby minimizing conductivity requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If transparent conductive materials like ITO are used for electrodes, then transparency is improved, but electrode resistance increases and transparency reduces when handling high currents
Solution Approach 1:
The patent merges multiple transparent conductive material layers (such as ITO and IZO) to form a composite transparent electrode structure. This combination allows the electrode to maintain high transparency while achieving lower overall resistance by distributing current across multiple conductive layers, thus resolving the contradiction between transparency and electrode resistance.
Solution Approach 2:
The patent employs composite transparent conductive materials consisting of different oxide layers (e.g., indium tin oxide and indium zinc oxide) with complementary electrical and optical properties. This composite structure enables the electrode to simultaneously achieve high transparency and low resistance, overcoming the limitations of single-material electrodes when handling high currents.
2Adaptability or versatility
If camera and sensor installations are added to the top of the screen, then functionality is improved, but screen consistency deteriorates
Solution Approach 1:
The patent moves camera and sensor components from the front surface of the display to the back surface, utilizing the z-dimension (depth) rather than occupying screen real estate. This allows the front display surface to remain fully consistent and uninterrupted while still providing the necessary functional components, thus resolving the contradiction between functionality and screen consistency.
Solution Approach 2:
The patent nests camera and sensor components within the display structure itself, integrating them into the layered construction of the display panel. By embedding these components within the display's internal layers rather than adding them as external attachments, the display maintains its visual consistency while incorporating necessary functional elements.
3Device complexity
If scanning line controls pixel circuit activation, then device complexity is reduced, but load current increases
Solution Approach 1:
The patent segments the control function by dividing the display into multiple independently controllable regions or zones, each with its own pixel circuits that can be activated selectively. This segmentation allows the scanning line to control only the necessary portions of the display at any given time, reducing overall load current while maintaining simple control structure through localized activation.
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 design significantly reduces load currents, allows for high transparency, and improves screen consistency by using electrodes with high transparency, effectively addressing the challenges of transparency and consistency in full-screen displays.
Implementation Method 1
One or more of the first electrode, the second electrode, the data line, and the scanning line are made of a transparent conductive material. The transparent conductive material has a light transmittance of more than 90%.
Implementation Method 2
When the pixel circuit is turned on, the data line provides a drive current for the first electrode to control illumination of the sub-pixels.
Data Source
AI summary
The present application relates to a display panel, a display screen and a control method thereof, and a display terminal and a driving method thereof. The first electrodes in the display panel have a one-to-one correspondence with the pixel circuits, and a second electrode is a full-surface electrode, at least a scanning line and at least a data line are connected to the pixel circuit, and the scanning lines control the turning on and turning off of the pixel circuit. When the pixel circuit is turned on, the data line provides a driving current for the first electrode to control the illumination of the sub-pixel. The scanning lines control the turning on and off of the pixel circuit, which requires only a switching voltage required by the pixel circuit, thereby greatly reducing a load current of the scanning line.