Transformer and flat panel display device including the same

The transformer design addresses the challenge of slimming down while maintaining inductance and heat dissipation by employing a unique coil and bobbin structure, ensuring efficient operation and reduced thickness in flat panel displays.

JP2026010165APending Publication Date: 2026-01-21LG INNOTEK CO LTD
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Patent Information

Application Number
JP2025177809
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2021-07-14
Filing Date
2025-10-22
Publication Date
2026-01-21

AI Technical Summary

Technical Problem

Existing transformers in flat panel displays face challenges in slimming down while maintaining sufficient inductance and heat dissipation, particularly due to the stacked structure of primary and secondary coils which limit thickness reduction and inductance.

Method used

A transformer design with a core portion, coil portion, and bobbin portion, featuring a unique coupling structure of primary and secondary coils with non-overlapping arrangements and insulating distances, along with a bobbin configuration that allows for efficient heat dissipation.

Benefits of technology

The design ensures adequate inductance and improved heat dissipation, enabling a slimmer transformer and flat panel display device by controlling the separation distance between coils and enhancing insulation and heat dissipation properties.

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Abstract

To provide a slim transformer which can be additionally slimmed, can secure wet inductance, and is excellent in heat dissipation performance while being slim, and to provide a flat panel display device using the same.SOLUTION: A transformer 100 according to an embodiment of the present invention includes a core part 110 including an upper core 111 and a lower core 112, a coil part partially disposed in the core part, and a bobbin part disposed between the core part and the coil part, wherein the coil part includes a primary coil and a secondary coil at least partially disposed on a side surface of the primary coil, the core part may include a first outer leg part, a second outer leg part, and a middle leg part disposed between the first outer leg part and the second outer leg part, and a shortest distance between the primary coil and the secondary coil may be 0.1 to 0.3 times a shortest distance from an outermost portion of the primary coil to one adjacent outer leg part of the first outer leg part and the second outer leg part.SELECTED DRAWING: Figure 1a
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