Display device

By combining transformer groups and voltage conversion circuits, independent power supply for different light-emitting element groups in the display device is achieved, solving the energy loss problem caused by complex power supply architecture and improving power supply efficiency and display quality.

CN122454907APending Publication Date: 2026-07-24HISENSE VISUAL TECH CO LTD
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Patent Information

Application Number
CN202510123459.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-24
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing display devices, the power supply architecture of the backlight module is complex, which leads to power loss during voltage conversion, affecting power supply efficiency and increasing manufacturing and operating costs.

Method used

A combination of transformer banks and voltage conversion circuits is adopted. By connecting the secondary winding of the transformer bank in series with the voltage conversion circuit, independent power supply can be provided to different light-emitting element groups, simplifying the power supply circuit and reducing energy loss.

Benefits of technology

It improves the power supply efficiency of display devices, reduces manufacturing and usage costs, improves luminous effect and display quality, and enhances the sensitivity and control capability of backlight driving circuits.

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Abstract

According to the display device, the power supply circuit of the backlight module can be simplified, and the power supply efficiency of the display device can be improved. The display device includes: a display panel; the backlight module is located on the light incident side of the display panel and comprises a first light-emitting element group and a second light-emitting element group, and the power supply voltages of the first light-emitting element group and the second light-emitting element group are not equal; the backlight driving circuit comprises a transformer group, a primary winding, a first secondary winding and a second secondary winding, the positive output end of the first secondary winding is electrically connected with the first light-emitting element group, and the positive output end of the second secondary winding is electrically connected with the second light-emitting element group; and at least one voltage conversion circuit, the voltage conversion circuit and the second secondary winding are connected in series between the ground terminal and the second light-emitting element group, and the voltage conversion circuit is used for performing voltage conversion on the input voltage.
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