CN200980201Y - A slotted structure of circuit board with noise repression - Google Patents
A slotted structure of circuit board with noise repression Download PDFInfo
- Publication number
- CN200980201Y CN200980201Y CN 200620047582 CN200620047582U CN200980201Y CN 200980201 Y CN200980201 Y CN 200980201Y CN 200620047582 CN200620047582 CN 200620047582 CN 200620047582 U CN200620047582 U CN 200620047582U CN 200980201 Y CN200980201 Y CN 200980201Y
- Authority
- CN
- China
- Prior art keywords
- circuit board
- utility
- noise
- model
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Dc-Dc Converters (AREA)
Abstract
The utility model provides a liquid crystal panel drive circuit board slotting structure, which arranged dual slots parallel beside a noise capacitor welding disc. The utility model adds slots a local portion on a circuit board without changing the distribution and kinds of prior elements, to quickly and effectively resolve the vibration noise generated in full-load work of DC/DC converter.
Description
Technical field
The utility model relates to a kind of notching construction of circuit board, particularly a kind of circuit board notching construction that suppresses noise.
Background technology
At present, general DC/DC transducer configuration is made up of main loop such as buck or boost chopper, charge pump, reference voltage regulating loop.And be used for the DC/DC converter of liquid crystal panel drive circuit, and to compare with other DC/DC converter, specification requirement is more strict, and as whole converter loop size, conversion efficiency is used condition restriction such as components and parts height.Make when the design liquid crystal panel drives with the DC/DC converter, must consider more factors.Especially for the ceramic condenser in charge pump loop, because the components and parts limitation in height can only adopt low back of the body capacitor.When the DC/DC converter when operating at full capacity because charge pump capacitor charging and discharging continuously and healthily, unavoidably can produce vibration, capacitor can expand contraction, particularly low back of the body capacitor more is easy to generate the sound ring, as " buzz " noise.
Summary of the invention
Technical problem of the present utility model is that a kind of liquid crystal panel drive circuit plate notching construction that suppresses noise will be provided.
For solving above technical problem, the technical solution of the utility model is to be arranged two notches in parallel on generation noise electric capacity pad side.
Described notch, the distance of itself and electric capacity pad is 0.5mm～1mm.
Described notch, its width are 1mm～2.5mm.
Superior effect of the present utility model is: under the prerequisite that does not change existing components and parts kind and components and parts Butut, local location to wiring board increases notch, can convenient and swiftly solve the vibrating noise that the DC/DC converter produces when operating at full capacity state effectively.
Description of drawings
Figure is a structural representation of the present utility model.
The number in the figure explanation
1-electric capacity; The 2-notch;
The 3-circuit board; The 4-pad.
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
The utility model be arranged two notches 2 in parallel on the low back of the body of generation noise electric capacity 1 pad 4 sides of liquid crystal panel drive circuit plate 3.
Described notch 2, the distance of itself and electric capacity 1 pad 4 is 0.5mm.
Described notch 2, its width are 1mm.
When the vibrating noise that the DC/DC converter produces when operating at full capacity state, notch 2 is used to offset the vibration that produces when low back of the body electric capacity 1 is worked, and only needs when manufacturing printed circuit board (PCB), utilizes circuit board cut-out technology to realize.
Claims (3)
1, a kind of circuit board notching construction that suppresses noise is characterized in that: be arranged two notches in parallel on generation noise electric capacity pad side.
2, a kind of circuit board notching construction that suppresses noise according to claim 1 is characterized in that: described notch, the distance of itself and electric capacity pad is 0.5mm～1mm.
3, a kind of circuit board notching construction that suppresses noise according to claim 1, it is characterized in that: described notch, its width are 1mm～2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047582 CN200980201Y (en) | 2006-11-08 | 2006-11-08 | A slotted structure of circuit board with noise repression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047582 CN200980201Y (en) | 2006-11-08 | 2006-11-08 | A slotted structure of circuit board with noise repression |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200980201Y true CN200980201Y (en) | 2007-11-21 |
Family
ID=38980584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620047582 Expired - Fee Related CN200980201Y (en) | 2006-11-08 | 2006-11-08 | A slotted structure of circuit board with noise repression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200980201Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556868A (en) * | 2021-09-18 | 2021-10-26 | 惠科股份有限公司 | Pad structure, circuit board and display device |
-
2006
- 2006-11-08 CN CN 200620047582 patent/CN200980201Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113556868A (en) * | 2021-09-18 | 2021-10-26 | 惠科股份有限公司 | Pad structure, circuit board and display device |
| CN113556868B (en) * | 2021-09-18 | 2022-01-14 | 惠科股份有限公司 | Pad structure, circuit board and display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20111108 |