Transparent Display Pixel Circuit With Reduced Signal Line Density
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Solution Overview
Problem
Transparent display apparatuses suffer from low transmittance due to complex pixel circuits with numerous circuit devices and dense signal lines, resulting in poor display quality and effect.
Innovation Solution
A simplified pixel circuit structure incorporating a data writing module, driving module, compensation module, coupling module, storage module, and light-emitting module, with specific voltage and power supply management phases to reduce circuit complexity and improve transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a complex pixel circuit structure with numerous circuit devices and dense signal lines is used, then the pixel circuit can perform multiple functions, but the transmittance of the transparent display apparatus deteriorates
Solution Approach 1:
The pixel circuit is divided into distinct functional modules: a data writing module for writing data voltages, a driving module for generating driving currents, a compensation module for threshold voltage compensation, a storage module for voltage storage, and a light-emitting module for light output. This segmentation allows each module to perform its specific function efficiently while reducing the overall circuit complexity and improving transmittance.
Solution Approach 2:
The invention extracts and eliminates redundant circuit devices and signal lines from the pixel circuit. By carefully selecting only the essential components needed for core functions (data writing, driving, compensation, and light emission), the circuit structure is simplified, reducing the number of signal traces and improving the transparent display effect.
2Device complexity
If the number of circuit devices in the pixel circuit is reduced to improve transmittance, then the manufacturing complexity decreases, but the reliability of the pixel circuit may deteriorate
Solution Approach 1:
The invention merges multiple functions into integrated modules. For example, the data writing module combines data input and voltage transmission functions, while the compensation module integrates threshold voltage compensation with the driving function. This merging reduces the total number of discrete components while maintaining comprehensive functionality and reliability.
Solution Approach 2:
Each module in the simplified pixel circuit is designed to perform multiple functions. The driving module, for instance, not only generates driving currents but also works in conjunction with the compensation module for threshold voltage compensation. This multi-functionality ensures that reducing component count does not compromise circuit reliability.
3Loss of information
If dense signal lines are used to connect pixel circuits, then comprehensive signal transmission is achieved, but the transmittance and transparent display effect deteriorate
Solution Approach 1:
The invention extracts and removes unnecessary signal lines from the pixel circuit routing. By identifying and eliminating redundant signal transmission paths, the density of signal lines is reduced, allowing more light to pass through the display apparatus while maintaining essential signal transmission for data writing, driving, and compensation functions.
Data Source
AI summary
Disclosed is a display panel. A data writing module transmits to a first terminal of a coupling module in a compensation phase, an initial voltage inputted from a first voltage input terminal, and transmits, to the first terminal of the coupling module in a data writing phase, a data voltage inputted from the first voltage input terminal. A second terminal of the coupling module is connected to a control terminal of a driving module. The driving module outputs a driving current to a light-emitting module in a light emission phase through a second terminal of the driving module based on a first power supply voltage inputted from a second voltage input terminal to a first terminal of the driving module and a voltage at the control terminal of the driving module.