Shared Tone Voltage Circuit with Gamma Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing color liquid crystal panel technologies face challenges in efficiently generating tone voltages that account for the unique gamma characteristics of red (R), green (G), and blue (B) subpixels, leading to increased circuit complexity and potential color reproducibility issues when using tone voltages in common for multiple color components.
Innovation Solution
A circuit device that generates tone voltages common for R, G, and B display data, with a data processing unit performing tone correction and multiplication by coefficients specific to each color component, ensuring the tone voltages conform to their respective gamma characteristics and adjusting for potential disparities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate R, G, and B tone voltage generation circuits are provided, then tone properties and color reproducibility are improved, but circuit area and device complexity increase
Solution Approach 1:
The patent merges the R, G, and B tone voltage generation circuits into a single shared circuit that generates common tone voltages. This reduces the circuit area and device complexity while maintaining color reproducibility through subsequent gamma correction processing that adjusts the common tone voltages to match the specific gamma characteristics of each color component.
Solution Approach 2:
The patent changes the parameters of the common tone voltages through gamma correction processing. By adjusting the voltage levels according to the specific gamma characteristics of R, G, and B color components, the system maintains accurate color reproduction despite using a shared voltage generation circuit.
2Device complexity
If tone voltages are used in common for R, G, and B display data, then circuit area is reduced, but tone properties and color reproducibility may degrade
Solution Approach 1:
The patent applies gamma correction processing to change the parameters of the common tone voltages. By adjusting the voltage levels according to the specific gamma characteristics of each color component, the system maintains accurate color reproduction despite using a shared voltage generation circuit.
Solution Approach 2:
The patent introduces gamma correction processing as an intermediary between the common tone voltage generation circuit and the display panel. This intermediary processing step adjusts the common voltages to account for the different gamma characteristics of R, G, and B subpixels, preventing color reproduction degradation.
3Reliability
If gamma correction is performed on multiple color components, then color reproducibility is improved, but processing complexity increases
Solution Approach 1:
The patent merges the gamma correction processing for R, G, and B color components into a unified correction mechanism. Instead of separately processing each color component through independent circuits, the system performs correction on the common tone voltages to account for all three color components' gamma characteristics, reducing processing complexity.
Data Source
AI summary
A circuit device includes a grayscale voltage generation circuit that generates a plurality of grayscale voltages, a data processing unit that performs data processing of first color component display data to third color component display data, and a drive unit that drives a display panel based on the first color component display data to the third color component display data that are subjected to the data processing and the plurality of grayscale voltages that are used in common for the first color component display data to the third color component display data. The data processing unit performs grayscale correction processing on at least one color component display data of the first color component display data to the third color component display data in a grayscale correction range.