Display device and driving control method

By adopting a single PMIC+Buck IC architecture in the display panel, and utilizing voltage conversion circuits and power management circuits to generate different types of drive voltages, the problems of high power consumption and severe heat generation under high refresh rates are solved, achieving more efficient power management and cost savings.

CN120418860BActive Publication Date: 2026-07-21BOE 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
2023-09-15
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing display panels consume a lot of power and generate a lot of heat at high refresh rates, which reduces the efficiency of the power management circuit and may cause abnormal display. Furthermore, the use of dual power management circuits increases the space occupied by the circuit and the cost.

Method used

It adopts a single PMIC+Buck IC architecture, which converts the backlight power supply voltage into the first power supply voltage through a voltage conversion circuit, and combines it with a power management circuit to generate different types of drive voltages, thereby alleviating the problem of excessive current, improving efficiency, and reducing heat generation and cost.

Benefits of technology

It improves the heat dissipation problem of the display panel, reduces the risk of abnormal display, saves circuit space and reduces costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

A display device and a driving control method are disclosed. The display device comprises: a voltage conversion circuit (520) configured to receive a backlight power supply voltage, generate a first power supply voltage (AVDD) after voltage conversion of the backlight power supply voltage, and output; the backlight power supply voltage is configured to supply power to a backlight control circuit (530); a power management circuit (510) coupled with the voltage conversion circuit (520) and configured to receive a second power supply voltage (VCC) and the first power supply voltage (AVDD), generate a first driving voltage (VGZ1) according to the second power supply voltage (VCC) and output to a driving circuit, and generate a second driving voltage (VGZ2) according to the first power supply voltage (AVDD) and output to a display panel.
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