A circuit board and its driving method, and a display device.

By integrating the first power control circuit and the second power control circuit into the circuit board, a stable low-voltage ELVDD signal is output, which solves the problem of increased power consumption in AMOLED display products and achieves high brightness display while reducing power consumption.

CN116206565BActive Publication Date: 2026-06-30BOE TECHNOLOGY GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BOE TECHNOLOGY GROUP CO LTD
Filing Date
2023-01-05
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

As the brightness requirements of AMOLED display products increase, the increased voltage leads to increased power consumption, and existing technologies struggle to effectively reduce power consumption while meeting voltage requirements.

Method used

Design a circuit board that integrates a first power control circuit and a second power control circuit. By controlling the voltage value of the second power signal to be lower than a preset voltage, and combining voltage regulation and filtering sub-circuits, a stable low-voltage ELVDD signal is output to meet the voltage requirements and reduce other control voltages.

Benefits of technology

While maintaining the required voltage across the screen, the power consumption of the display product is significantly reduced, while avoiding image quality issues and screen flickering, thus achieving high-brightness display.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a circuit board and its driving method, as well as a display device, relating to the field of display technology, for reducing the power consumption of a display product while ensuring voltage cross-voltage. The circuit board includes: a first power control circuit and a second power control circuit; the first power control circuit, under the control of a first control terminal, controls whether a first power signal output terminal outputs a first power signal; the first power control circuit is also used, under the control of a second control terminal, to control whether a drive power signal output terminal outputs a drive power signal; the second power control circuit, under the control of a third control terminal, controls whether a second power signal output terminal outputs a second power signal; the voltage value of the second power signal is less than a preset voltage value, and there is a target voltage cross-voltage value between the first power signal and the second power signal.
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