Method of winding coil and transformer and inverter liquid crystal display having coil wound using the same
A method of winding a coil of a transformer in an inverter of a liquid crystal display including a bobbin wound with a coil and a core introduced into the bobbin, the method includes forming a coil winding part having no protrusion member at the bobbin so as to exclude an interference caused by the protrusion member from a path wound with the coil; and continuously winding the coil from one side of the coil winding part to another side thereof.
1. A transformer for driving a lamp of a liquid crystal display including a bobbin wound with a coil and a core introduced into the bobbin, said transformer comprising:
the bobbin provided with a coil winding part having no protrusion member so as to exclude an interference caused by the protrusion member from a path wound with the coil and a pair of lead pins each extending from opposing ends of the bobbin along opposing directions parallel to a length of the bobbin; and
said coil continuously wound starting from one end of the coil winding part and terminating at another end thereof and connected to two lead pins at a primary side and a secondary side without using a return wire, the coil being continuously wound from one side of the coil winding part to another side thereof, such that a number of windings is periodically increased in the vertical direction,
wherein the core includes first and second E-shaped core portions each having centers passing through a center of the bobbin and sidewall portions surrounding sides of the bobbin.
2. The transformer according to claim 1 , wherein the coil is continuously wound from one side of the coil winding part to another side thereof on a zigzag basis in an oblique direction.
3. The transformer according to claim 1 , wherein a surface of the coil is coated with an adhesive so as to prevent the coil from collapsing during the winding process.
4. A transformer for driving a lamp of a liquid crystal display, including a bobbin wound with a coil and a core introduced into the bobbin, said transformer comprising:
the bobbin provided with a coil winding part having no protrusion member so as to exclude an interference caused by the protrusion member from a path wound with the coil and a pair of lead pins each extending from opposing ends of the bobbin along opposing directions parallel to a length of the bobbin; and
at least two coil blocks wound with the coil for each block by a desired winding frequency and continuously arranged starting from one end of the coil winding part and terminating at another end thereof and connected to two lead pins at a primary side and a secondary side without using a return wire,
wherein the core includes first and second E-shaped core portions each having centers passing through a center of the bobbin and sidewall portions surrounding sides of the bobbin.
5. The transformer according to claim 4 , wherein the coil is continuously wound from a lower portion to an upper portion, such that the coil blocks have a number of windings increased periodically in the horizontal direction.
6. The transformer according to claim 4 , wherein the coil blocks are continuously arranged from one side of the coil winding part to another side thereof on a zigzag basis in an oblique direction.
7. The transformer according to claim 4 , wherein a surface of the coil is coated with an adhesive so as to prevent the coil from collapsing during the winding process.