Driving circuit, backlight module and display device

By designing the current directions of the first and second traces in the driving circuit to be opposite and using a voltage-equalizing unit to compensate for the potential, the problem of uneven light emission of Mini LED lamp beads was solved, the brightness consistency of the light-emitting components was achieved, and the product quality was improved.

CN116543710BActive Publication Date: 2025-09-09HKC CORP LTD
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Patent Information

Application Number
CN202310485009.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-28
Publication Date
2025-09-09
Estimated Expiration
2043-04-28

AI Technical Summary

Technical Problem

Due to the different wiring paths for supplying voltage to different Mini LED lamp beads, the voltage driving multiple Mini LED lamp beads to emit light is uneven, affecting product quality.

Method used

A driving circuit design is adopted, including a first routing line, a second routing line and multiple voltage balancing units. By making the current directions on the first routing line and the second routing line opposite and compensating their potentials with each other through the voltage balancing unit, it is ensured that the driving signal potential output by each voltage balancing unit is the same, thereby making the luminous brightness of each light-emitting component consistent.

Benefits of technology

The uniformity of the luminous brightness of each light-emitting component is achieved, thereby improving product quality.

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Abstract

The present application provides a driving circuit, which includes a first wiring, a second wiring and a plurality of voltage balancing units, wherein the first wiring has a plurality of first nodes, the second wiring has a plurality of second nodes, the first end of the voltage balancing unit is electrically connected to the first node, the second end of the voltage balancing unit is electrically connected to the second node, and the third end of the voltage balancing unit is electrically connected to the anode of the light-emitting component. The direction of the current on the first wiring is opposite to the direction of the current on the second wiring, so that the potential of the first end of the voltage balancing unit and the potential of the second end complement each other, the voltage balancing unit obtains a driving signal based on the potential of the first end and the second end, and transmits the driving signal to the light-emitting component to drive the light-emitting component to emit light. Therefore, the voltage balancing unit obtains the driving signal based on the sum of the potentials of the first end and the second end, so that the potentials of the driving signals output by the plurality of voltage balancing units are the same, thereby making the light-emitting brightness of each light-emitting component the same. The present application also provides a backlight module and a display device.
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