Source Driver IC Power Control Signal Segmentation for Display Devices
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Solution Overview
Problem
Existing display devices, particularly organic light emitting display devices, face inefficiencies in power consumption due to uniformly applied power control signals across all source driving integrated circuits, leading to excessive driving current and unnecessary power consumption.
Innovation Solution
Implementing a display device with a timing controller that outputs customized power control signals for each source driving integrated circuit, allowing individual control of driving current based on color and transition levels, thereby optimizing power consumption and reducing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If a single power control signal is applied to all source driving integrated circuits, then the control system remains simple, but power consumption increases due to excessive driving current
Solution Approach 1:
The patent segments the single power control signal into multiple separate power control signals, with each signal dedicated to a specific source driving integrated circuit. This allows each SDIC to receive a customized power control signal optimized for its specific color channel (R, G, B) and operational characteristics, thereby reducing overall power consumption while maintaining manageable system complexity through modular control architecture
Solution Approach 2:
The patent implements local quality by generating distinct power control signals tailored to the specific requirements of each source driving integrated circuit and its associated color channel. Each power control signal is optimized locally for its target SDIC's driving current characteristics, enabling precise power management that adapts to local conditions rather than applying a uniform control approach across all circuits
2Measurement precision
If a single power control signal is used for all source driving integrated circuits, then the control signal generation remains simple, but driving current control precision deteriorates
Solution Approach 1:
The timing controller segments the power control signal generation function, creating separate power control signals for each source driving integrated circuit. This segmentation enables precise control of driving current for each SDIC individually, as each signal can be optimized based on the specific characteristics of its target circuit and color channel, thereby improving control precision without overwhelming complexity
Solution Approach 2:
The patent applies local quality by generating power control signals with characteristics specifically tailored to each source driving integrated circuit's requirements. Each signal incorporates local optimization for its target SDIC's color channel and operational parameters, enabling precise driving current control that adapts to local conditions while the timing controller manages the overall signal generation process
3Use of energy by moving object
If excessive driving current is output to source driving integrated circuits, then the display brightness may be sufficient, but power consumption increases unnecessarily
Solution Approach 1:
The patent implements dynamics by making the driving current adaptive rather than fixed. Each power control signal dynamically adjusts the driving current level based on the specific requirements of its target source driving integrated circuit and color channel. This dynamic control ensures sufficient display brightness is achieved while minimizing excessive current output, thereby optimizing power consumption without compromising visual performance
Data Source
AI summary
A display device can include a display panel having sub pixels configured to emit light of different colors, a data driver configured to output a data voltage to the sub pixels via data lines, and a timing controller configured to output power control signals for controlling a driving current which drives the data driver. The data driver can include source driving integrated circuits, each including power control circuits configured to generate the driving current in accordance with each of the power control signals, and amplifiers configured to be applied with the driving current to output the data voltage to each of the data lines.