Hybrid Gamma Driver for Display Panels
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Solution Overview
Problem
Current electronic devices require two source driver ICs to achieve independent gamma settings for pulse amplitude modulation (PAM) and pulse width modulation (PWM), leading to increased costs and complexity.
Innovation Solution
An electronic device with a driver and driving circuit that converts PWM and PAM data using a single gamma setting curve, incorporating both PWM and PAM circuits to provide a hybrid gamma setting, allowing for improved optical performance without the need for two separate source driver ICs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two source driver ICs are used to provide independent gamma settings for PAM and PWM, then optical performance is improved, but cost increases
Solution Approach 1:
The patent combines PAM and PWM gamma setting functions into a single source driver IC. The driver receives both PAM data and PWM data, applies the same gamma setting curve to both through a shared conversion circuit, and outputs corrected signals to the display panel. This merging eliminates the need for two separate driver ICs while maintaining independent gamma control for both modulation modes, thereby reducing cost while preserving optical performance.
Solution Approach 2:
The source driver IC is designed with multi-functionality to handle both PAM and PWM modulation modes. The driver includes a gamma setting circuit that can process both PAM data and PWM data through the same gamma correction mechanism. This universal design allows a single driver IC to perform the functions previously requiring two separate ICs, reducing device complexity and cost while maintaining the ability to independently optimize gamma settings for each modulation mode.
2Reliability
If two source driver ICs are used for independent PAM and PWM gamma settings, then optical performance is improved, but device complexity increases
Solution Approach 1:
The patent merges the functionality of two separate source driver ICs into a single integrated driver. The driver includes a unified gamma setting circuit that processes both PAM and PWM data streams simultaneously, applying appropriate gamma correction to each. This consolidation reduces device complexity by eliminating redundant components while maintaining the capability to independently control gamma settings for both modulation modes, thereby preserving optical performance.
Solution Approach 2:
The source driver IC is designed as a universal controller that can handle both PAM and PWM modulation modes through a single device. The driver includes a gamma setting circuit that receives both PAM data and PWM data, applies gamma correction using the same correction curve, and outputs the corrected signals. This multi-functional design reduces device complexity while maintaining independent gamma control for optimal optical performance in both modulation modes.
Data Source
AI summary
An electronic device is provided. The electronic device includes a driver, a driving circuit and an electronic element. The driver converts a first PWM data to a second PWM data according to a gamma setting curve, and converts a first PAM data to a second PAM data according to the gamma setting curve. The driving circuit includes a PWM circuit and a PAM circuit. The PWM circuit receives the second PWM data. The PAM circuit receives the second PAM data. The electronic element emits a light according to a driving current provided from the driving circuit.