Pixel Array Bias Signal Generation from Gate Control Signals
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Solution Overview
Problem
Conventional voltage source or current source circuits for pixel arrays require a complicated bias signal generation IC to provide the bias signal, increasing circuit cost and complexity.
Innovation Solution
An electronic device with a pixel array, a gate driver, and a bias signal driver that generates a bias signal using a first and second logic circuit, eliminating the need for a separate bias signal generation IC by utilizing gate control signals to activate pixel units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate bias signal generation IC is added to provide the bias signal, then the bias signal can be provided to pixel units, but the circuit cost and complexity increase
Solution Approach 1:
The patent merges the bias signal generation function into the existing gate driver IC by adding logic circuits (such as NOR gates or NAND gates) that generate bias signals from existing gate control signals. This eliminates the need for a separate bias signal generation IC, thereby reducing circuit complexity while maintaining the ability to provide bias signals to pixel units for proper operation and threshold voltage compensation.
2Reliability
If a separate bias signal generation IC is added to provide the bias signal, then the bias signal can be provided to pixel units, but the circuit cost increases
Solution Approach 1:
The patent combines the bias signal generation function with the existing gate driver IC, eliminating the need for a separate component. This merging reduces the total component count and assembly requirements, directly lowering manufacturing costs while ensuring reliable bias signal provision to all pixel units in the display panel.
3Device complexity
If conventional voltage source or current source circuits are used without bias signal generation capability, then the circuit design is simpler, but the bias signal cannot be provided to pixel units
Solution Approach 1:
The patent enhances the gate driver IC to perform multiple functions: it continues to provide gate control signals for scanning and resetting pixel units while simultaneously generating bias signals through integrated logic circuits. This multi-functional design maintains circuit simplicity while ensuring reliable bias signal provision, allowing the same IC to serve both control and signal generation purposes.
Data Source
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AI summary
An electronic device (100) is provided. The electronic device (100) includes a pixel array (101), a gate driver (110) and a bias signal driver (120, 420, 520, 720, 920, 1120, 1220, 1320, 1420). The pixel array (101) includes a pixel unit (140, 240). The gate driver (110) generates a plurality of gate control signals Gate_(n-2) to Gate_(n+2). The bias signal driver (120, 420, 520, 720, 920, 1120, 1220, 1320, 1420) is electrically connected to the pixel unit (140, 240) and the gate driver (110), and configured to generate a bias signal to activate the pixel unit (140, 240) according to a part of the plurality of gate control signals Gate_(n-2) to Gate_(n+2). The bias signal driver (120, 420, 520, 720, 920, 1120, 1220, 1320, 1420) includes a first logic circuit (421, 521, 721, 921, 1121, 1221, 1321, 1421) and a second logic circuit.