LCD Driving Circuit Programmable Current Source 3D Shaping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display panels struggle to simultaneously output different shaping voltages, resulting in a mediocre 3D display effect due to limitations in their driving circuits.
Innovation Solution
Incorporating a programmable DC current source and shaping resistor within the driving circuit, utilizing PNP transistors and load resistances to generate shaping voltages based on varying reference voltages for different image signals, allowing for simultaneous output of shaping voltages with different voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional driving circuit is used, then the circuit structure is simple, but it cannot simultaneously output different shaping voltages for 3D display
Solution Approach 1:
The driving circuit is segmented into multiple independent constant current source modules, each capable of generating different shaping voltages. This segmentation allows simultaneous output of multiple different shaping voltages without requiring a completely complex redesign of the entire driving circuit.
Solution Approach 2:
The driving circuit incorporates programmable constant current sources that can dynamically adjust their output based on control signals. This dynamic capability enables the circuit to adapt to different display modes (2D/3D) and generate appropriate shaping voltages on demand, improving versatility without permanent structural complexity.
2Reliability
If shaping voltage is applied to eliminate scanning signal interference, then data signal integrity is improved, but 3D display effect is degraded due to inability to output different shaping voltages simultaneously
Solution Approach 1:
The driving circuit is divided into multiple independent constant current source modules, each capable of generating different shaping voltages. This segmentation allows simultaneous output of multiple different shaping voltages without requiring a completely complex redesign of the entire driving circuit.
Solution Approach 2:
Each constant current source module is designed with specific local characteristics tailored to different scanning line requirements. This allows different shaping voltages to be applied to different scanning lines simultaneously, enabling 3D display while maintaining data signal integrity through localized optimization.
Data Source
AI summary
A liquid crystal display panel is disclosed and has a driving circuit, a plurality of data lines, a plurality of scanning lines, and a plurality of pixel units. The driving circuit further includes a programmable DC current source being used to output a corresponding shaping electric current according to a reference voltage, and a shaping resistor being used to generate a corresponding shaping voltage according to the outputted shaping electric current. A liquid crystal display apparatus is also disclosed. The apparatus is able to output shaping voltages with different voltage levels at the same time, thus having a better 3D display effect.