Dynamic Capacitance Compensation Lookup Table for Display Response Speed
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Solution Overview
Problem
Liquid crystal displays face delays in response speed due to the time it takes for the liquid crystal material to adjust to the applied electric field, leading to degraded performance, and existing dynamic capacitance compensation methods require a separate frame memory, increasing costs and reducing yield rates.
Innovation Solution
A display device with an external image processing set and a display assembly that uses a dynamic capacitance compensation lookup table to compensate for the response speed without requiring a frame memory, allowing for faster image reproduction and improved motion picture quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If dynamic capacitance compensation is implemented using a separate frame memory, then response speed is improved, but manufacturing cost increases and yield rate decreases
Solution Approach 1:
The patent extracts the frame memory component from the display device architecture, moving the dynamic capacitance compensation function to an external image processing device. This eliminates the need for an embedded frame memory in the display panel, thereby reducing manufacturing complexity and improving yield rate while maintaining the response speed improvement benefits.
Solution Approach 2:
The patent introduces an external image processing device as an intermediary component that performs dynamic capacitance compensation. This mediator handles the frame memory functions externally, allowing the display device itself to be simpler and easier to manufacture while still achieving fast response times through the external processing unit.
2Manufacturing precision
If liquid crystal material is used to control light transmission, then display quality is achieved, but response speed is degraded due to delay time
Solution Approach 1:
The patent applies preliminary action by performing dynamic capacitance compensation on the image data before it is displayed. By pre-processing the image data to account for liquid crystal response characteristics, the system compensates for the inherent delay time, allowing the liquid crystal material to reach its target state faster and improving overall response speed while maintaining display quality.
3Speed
If over-drive operation is applied to improve response speed, then response time is reduced, but additional hardware components are required
Solution Approach 1:
The patent replaces the mechanical hardware approach (embedded frame memory) with a software/data processing approach. By using lookup tables and algorithms in an external image processing device, the system achieves over-drive operation and dynamic capacitance compensation through data manipulation rather than additional physical hardware components, thereby reducing device 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
The solution enhances response speed and display quality by eliminating the need for frame memory, reducing costs, and increasing yield rates, while maintaining high-quality motion picture performance.
Implementation Method 1
liquid crystal material having anisotropic dielectric properties provided between two substrates
Implementation Method 2
intensity of electric field being applied to a liquid crystal material
Data Source
AI summary
A display device includes an external image processing set and a display assembly configured to receive converted image data from the external image processing set and display an image corresponding to the converted image data. The display assembly includes a dynamic capacitance compensation lookup table storage unit which stores therein a dynamic capacitance compensation lookup table, and the external image processing set includes a memory which receives the dynamic capacitance compensation lookup table from the display assembly and stores therein the received dynamic capacitance compensation lookup table, and a graphic processing unit which outputs converted image data in which current frame data has undergone dynamic capacitance compensation based on the stored dynamic capacitance compensation lookup table, the current frame data and previous frame data.