CN101996742B - Surface-mounted transformer magnetic core for liquid crystal display - Google Patents
Surface-mounted transformer magnetic core for liquid crystal display Download PDFInfo
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- CN101996742B CN101996742B CN2009100567444A CN200910056744A CN101996742B CN 101996742 B CN101996742 B CN 101996742B CN 2009100567444 A CN2009100567444 A CN 2009100567444A CN 200910056744 A CN200910056744 A CN 200910056744A CN 101996742 B CN101996742 B CN 101996742B
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Abstract
The invention relates to a surface-mounted transformer magnetic core for a liquid crystal display, comprising an I-shaped magnetic core and a C-shaped magnetic core, wherein the I-shaped magnetic core is a cuboid, the C-shaped magnetic core is in a C shape, and the right side of the surface-mounted transformer magnetic core is provided with a bulge. Compared with the prior art, the surface-mounted transformer magnetic core has relatively simple structure and shape, large radiating area, simple manufacturing technology and better electromagnetic performance, is beneficial to surface mount and can be used for manufacturing large-size magnetic cores; the inductive dispersion of the surface-mounted transformer magnetic core is strictly controlled within 10 percent, the leakage inductance consistency is strictly controlled within 3 percent, the power loss requirement is controlled within 60mW/g, and the inductance, the leakage inductance and the power loss are ensured.
Description
Technical field
The present invention relates to a kind of magnetic core of transformer, especially relate to a kind of LCD and use the surface mount magnetic core of transformer.
Background technology
Along with the requirement of consumer to the LCD TV industry, the LCD TV industry has been accelerated lightness, slimming process, and the consumer has higher requirement to the reliability of LCD TV simultaneously; In order to satisfy the demands of consumers, each big LCD TV manufacturer has accelerated the dynamics of research and development, 2005 to 2009 one after another; LCD TV is developed into V5 generation by V1 generation; Almost every year more a new generation, the boost conversion transformer above the core PCB of LCD TV carries out very big upgrading, is example with 46 o'clock LCD TVs; Transformer specification upgrades to the CI type by the EPC type, and number transformer reduces to V5 generations 4 cover by 64 covers in V1 generation.The present invention researches and develops under the background of LCD TV upgrading just, and the successful development professional etiquette modelling volume production of going forward side by side at short notice.The shipment amount of LCD TV is about 2,000 ten thousand/year at present, and the demand of CI type transformer is about 4000-5000 ten thousand covers, and the demand of CI type magnetic core is ten thousand pairs/year of about 5000-6000.
Summary of the invention
The object of the invention is exactly to provide a kind of simple in structure for the defective that overcomes above-mentioned prior art existence, and the LCD that electromagnetic performance is good is used the surface mount magnetic core of transformer.
The object of the invention can be realized through following technical scheme:
A kind of LCD is used the surface mount magnetic core of transformer, it is characterized in that, this magnetic core comprises two parts, and parts are C shape magnetic core; Another parts are I shape magnetic core, described C shape magnetic core be shaped as that " [" shape, the length of this magnetic core are 4.9-5.1mm; Width is 31.75-32.25mm, highly is 49.7-50.3mm, and the thickness in left side is 2.4-2.6mm; The thickness of right side projection is 2.4-2.6mm, highly is 6.2-6.8mm, and described I shape magnetic core is a rectangular shape; The thickness of this magnetic core is 3.6-3.8mm, and width is 21.55-22.05mm, highly is 50.7-51.5mm.
The manufactured materials of described magnetic core comprises MnZn ferrite material.
Described magnetic core is located at C shape magnetic core on the I shape magnetic core when mounted, and the projection of C shape magnetic core is connected with I shape magnetic core.
Described magnetic core is in surface mount is installed in 37 o'clock LCD TVs.
Compared with prior art, the present invention has the following advantages:
(1) this core structure shape is simple relatively; The magnetic core area of dissipation is big, help surface mount, manufacture craft is simple, can also make the large scale magnetic core, adopts the surface mount mode; Do not influence the final height of pcb board; The transformer conversion efficiency made from this magnetic core increases substantially, one above the pcb board as long as the transformer that 2 these magnetic cores of cover are processed just can reach the conversion effect of former dozens of EPC type transformer, greatly reduce the production cost of pcb board; Owing to the rapid minimizing of number transformer, the functional reliability of pcb board increases substantially simultaneously;
(2) electromagnetic performance is better; The inductance discreteness of magnetic core is strictly controlled at 10% with interior (the conventional products discreteness is generally 25%); The leakage inductance consistency be strictly controlled at 3% with interior (the control leakage inductance requires the mill processing dimension consistency of magnetic core to be controlled in the 0.05mm, conventional products 0.30mm with interior also can), power loss requires to be controlled in the 60mW/g; In order to guarantee the performance of magnetic core; Strict chosen material, and fixedly sintering process and mill processing technology guarantee inductance, leakage inductance, the power loss of magnetic core.
Description of drawings
Fig. 1 is the front view of C shape magnetic core;
Fig. 2 is the right view of C shape magnetic core;
Fig. 3 is the front view of I shape magnetic core;
Fig. 4 is the right view of I shape magnetic core;
Fig. 5 is the assembling front view of this CI magnetic core;
Fig. 6 is the assembling right view of this CI magnetic core.
1 is C shape magnetic core among the figure, and 2 is I shape magnetic core.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
A kind of LCD is used the surface mount magnetic core of transformer, and this magnetic core is made up of C shape magnetic core 1 and 2 two parts of I shape magnetic core, and KP95 processes by MnZn ferrite material.The front view of C shape magnetic core 1 is as shown in Figure 1, and right view is as shown in Figure 2, and C shape magnetic core 1 is " [" shape; The length of this magnetic core is 5.0mm, and width is 32.0mm, highly is 50.0mm; The thickness in left side is 2.5mm, and the thickness of right side projection is 2.5mm, highly is 6.5mm; The front view of I shape magnetic core 2 is as shown in Figure 3, and right view is as shown in Figure 4, and I shape magnetic core 2 is a cuboid, and thickness is 3.7mm, and width is 21.8mm, highly is 51.1mm.The installation front view of CI magnetic core is as shown in Figure 5; Right view is as shown in Figure 6; During installation C shape magnetic core 1 is located on the I shape magnetic core 2; The projection of C shape magnetic core 1 is connected with I shape magnetic core 2, through surface-pasted method this magnetic core is installed in 37 o'clock the LCD TV, installs at least at present in 5 machines.
A kind of LCD is used the surface mount magnetic core of transformer, and this magnetic core is made up of C shape magnetic core and two parts of I shape magnetic core, and KP95 processes by MnZn ferrite material.C shape magnetic core be shaped as that " [" shape, the length of this magnetic core are 4.9mm, and width is 31.75mm, highly are 49.7mm, and the thickness in left side is 2.4mm, and the thickness of right side projection is 2.4mm, highly are 6.2mm; I shape magnetic core is a cuboid, and thickness is 3.6mm, and width is 21.55mm, highly is 50.7mm.During installation C shape magnetic core is located on the I shape magnetic core, the projection of C shape magnetic core is connected with I shape magnetic core, through surface-pasted method this magnetic core is installed in 37 o'clock the LCD TV, installs at least at present in 5 machines.
Embodiment 3
A kind of LCD is used the surface mount magnetic core of transformer, and this magnetic core is made up of C shape magnetic core and two parts of I shape magnetic core, and KP95 processes by MnZn ferrite material.C shape magnetic core be shaped as that " [" shape, the length of this magnetic core are 5.1mm, and width is 32.25mm, highly are 50.3mm, and the thickness in left side is 2.6mm, and the thickness of right side projection is 2.6mm, highly are 6.8mm; I shape magnetic core is a cuboid, and thickness is 3.8mm, and width is 22.05mm, highly is 51.5mm.During installation C shape magnetic core is located on the I shape magnetic core, the projection of C shape magnetic core is connected with I shape magnetic core, through surface-pasted method this magnetic core is installed in 37 o'clock the LCD TV, installs at least at present in 5 machines.
Claims (3)
1. a LCD is used the surface mount magnetic core of transformer, it is characterized in that, this magnetic core comprises two parts, and parts are C shape magnetic core; Another parts are I shape magnetic core, described C shape magnetic core be shaped as that " [" shape, the length of this magnetic core are 4.9-5.1mm; Width is 31.75-32.25mm, highly is 49.7-50.3mm, and the thickness in left side is 2.4-2.6mm; The thickness of right side projection is 2.4-2.6mm, highly is 6.2-6.8mm, and described I shape magnetic core is a rectangular shape; The thickness of this magnetic core is 3.6-3.8mm, and width is 21.55-22.05mm, highly is 50.7-51.5mm; Described magnetic core is located at C shape magnetic core on the I shape magnetic core when mounted, and the projection of C shape magnetic core is connected with I shape magnetic core.
2. a kind of LCD according to claim 1 is used the surface mount magnetic core of transformer, it is characterized in that, the manufactured materials of described magnetic core comprises MnZn ferrite material.
3. a kind of LCD according to claim 1 is used the surface mount magnetic core of transformer, it is characterized in that, described magnetic core is installed in the 37 inch LCD TVs through surface mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100567444A CN101996742B (en) | 2009-08-20 | 2009-08-20 | Surface-mounted transformer magnetic core for liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100567444A CN101996742B (en) | 2009-08-20 | 2009-08-20 | Surface-mounted transformer magnetic core for liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101996742A CN101996742A (en) | 2011-03-30 |
| CN101996742B true CN101996742B (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100567444A Expired - Fee Related CN101996742B (en) | 2009-08-20 | 2009-08-20 | Surface-mounted transformer magnetic core for liquid crystal display |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6154113A (en) * | 1998-06-22 | 2000-11-28 | Koito Manufacturing Co., Ltd. | Transformer and method of assembling same |
| CN1832066A (en) * | 2005-03-11 | 2006-09-13 | 东光株式会社 | Current balance transformer and electric-discharge lamp alight apparatus using thereof |
| CN101236819A (en) * | 2007-12-11 | 2008-08-06 | 乳源东阳光磁性材料有限公司 | A nickel-copper-zinc ferrite and its making method |
| CN101246776A (en) * | 2007-02-16 | 2008-08-20 | 达方电子股份有限公司 | Discharging light tube driving circuit and its transformer |
-
2009
- 2009-08-20 CN CN2009100567444A patent/CN101996742B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6154113A (en) * | 1998-06-22 | 2000-11-28 | Koito Manufacturing Co., Ltd. | Transformer and method of assembling same |
| CN1832066A (en) * | 2005-03-11 | 2006-09-13 | 东光株式会社 | Current balance transformer and electric-discharge lamp alight apparatus using thereof |
| CN101246776A (en) * | 2007-02-16 | 2008-08-20 | 达方电子股份有限公司 | Discharging light tube driving circuit and its transformer |
| CN101236819A (en) * | 2007-12-11 | 2008-08-06 | 乳源东阳光磁性材料有限公司 | A nickel-copper-zinc ferrite and its making method |
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| Publication number | Publication date |
|---|---|
| CN101996742A (en) | 2011-03-30 |
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Owner name: SHUYANG KANGCHUN MAGNETIC EQUIPMENT CO., LTD. Effective date: 20130312 |
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Effective date of registration: 20130312 Address after: 201601 Shanghai Songjiang District Sijing town nine trunk road 99 Lane 9, building second, building third Patentee after: Shanghai Kangshun Magnetism Component Plant Co., Ltd. Patentee after: Muyang Kangshun Magnetic Equipment Co., Ltd. Address before: 201601 Shanghai Songjiang District Sijing town nine trunk road 99 Lane 9, building second, building third Patentee before: Shanghai Kangshun Magnetism Component Plant Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20150820 |
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