CN202093786U - Circuit for reducing conduction radiated interference - Google Patents
Circuit for reducing conduction radiated interference Download PDFInfo
- Publication number
- CN202093786U CN202093786U CN2011201399561U CN201120139956U CN202093786U CN 202093786 U CN202093786 U CN 202093786U CN 2011201399561 U CN2011201399561 U CN 2011201399561U CN 201120139956 U CN201120139956 U CN 201120139956U CN 202093786 U CN202093786 U CN 202093786U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- liquid crystal
- crystal display
- lcd
- 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 - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 11
- 230000011664 signaling Effects 0.000 abstract 2
- 239000003990 capacitor Substances 0.000 description 4
- 239000011324 bead Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Images
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model discloses a circuit for reducing conduction radiated interference. The circuit comprises an LVDS (Low Voltage Differential Signaling) driver IC and an LCD, wherein buffer resistors are respectively connected in series to the interior of differential signaling data lines between the LVDS driver IC and the LCD; and clock lines between the LVDS driver IC and the LCD are connected with RC high-frequency filters for clock signals. The circuit provided by the utility model reduces the conduction radiated interference of LVDS signals of both an LCD TV and an LCD driver board.
Description
Technical field
The utility model relates to the circuit field of electronic product, relates in particular to a kind of circuit that conduct radiation is disturbed that reduces.
Background technology
Differential signal data line between LVDS chip for driving and liquid crystal display has undesired signal easily at present, and the clock line between described LVDS chip for driving and liquid crystal display also is easy to generate the conduct radiation interference,
This is a urgent problem.
The utility model content
The purpose of this utility model provides a kind of circuit that reduces LCD TV and the interference of liquid crystal display-driving plate LVDS signal conduct radiation, and described circuit structure is simple, and production cost is low.
For achieving the above object, the utility model provides a kind of circuit that conduct radiation is disturbed that reduces, comprise LVDS chip for driving, liquid crystal display, distinguish series buffer resistance in the differential signal data line between described LVDS chip for driving and liquid crystal display, on the clock line between described LVDS chip for driving and the liquid crystal display, be connected with the RC high frequency filter of clock signal.
Further, described buffer resistance is adjustable resistance resistance, and Standard resistance range is 10-100 ohm.
Further, described RC high frequency filter is made of 2 resistance and 2 electric capacity.
The utility model circuit structure is simple, and production cost is low, has reduced LCD TV and liquid crystal display-driving plate LVDS signal conduct radiation and has disturbed.
Description of drawings
Fig. 1 is the utility model impedance matching and the circuit diagram that reduces the circuit of conduct radiation interference.
Embodiment
Please refer to Fig. 1, the utility model embodiment provides a kind of circuit that conduct radiation is disturbed that reduces, comprise LVDS chip for driving, liquid crystal display, distinguish series buffer resistance in the differential signal data line between described LVDS chip for driving and liquid crystal display, on the clock line between described LVDS chip for driving and the liquid crystal display, be connected with the RC high frequency filter of clock signal.
Concrete, difference series buffer resistance R1-R8 in eight differential signal data lines between described LVDS chip for driving and liquid crystal display.Connect buffer resistance R9, R10 on the two clock lines between described LVDS chip for driving and the liquid crystal display, the end of buffer resistance R9 is by capacitor C 2 ground connection, and the end of buffer resistance R10 is by capacitor C 1 ground connection.Buffer resistance R9, R10, capacitor C 1, C2 constitute the RC high frequency filter of clock signal together.The value of capacitor C 1, C2 according to different screen values between the 3pF to 33pF.
Buffer resistance R1-R10 can adjust the value of this resistance according to the compatible result situation that the rear end connects the situation of wire rod and liquid crystal display among the figure, and described buffer resistance is adjustable resistance resistance, and general value is between Europe, 10 Europe to 100.When above measure can't reach ideal effect, R1-R10 can be replaced with the form of special-purpose electromagnetic interface bead.
Claims (3)
1. one kind is reduced the circuit that conduct radiation is disturbed, it is characterized in that: comprise LVDS chip for driving, liquid crystal display, distinguish series buffer resistance in the differential signal data line between described LVDS chip for driving and liquid crystal display, on the clock line between described LVDS chip for driving and the liquid crystal display, be connected with the RC high frequency filter of clock signal.
2. reduce the circuit that conduct radiation is disturbed according to claim 1, it is characterized in that: described buffer resistance is adjustable resistance resistance, and Standard resistance range is 10-100 ohm.
3. reduce the circuit that conduct radiation is disturbed according to claim 1, it is characterized in that: described RC high frequency filter is made of 2 resistance and 2 electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201399561U CN202093786U (en) | 2011-05-05 | 2011-05-05 | Circuit for reducing conduction radiated interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201399561U CN202093786U (en) | 2011-05-05 | 2011-05-05 | Circuit for reducing conduction radiated interference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202093786U true CN202093786U (en) | 2011-12-28 |
Family
ID=45368839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201399561U Expired - Lifetime CN202093786U (en) | 2011-05-05 | 2011-05-05 | Circuit for reducing conduction radiated interference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202093786U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979179A (en) * | 2016-04-25 | 2016-09-28 | 乐视控股（北京）有限公司 | Clock signal processing circuit and clock signal processing method |
| CN111384846A (en) * | 2018-12-25 | 2020-07-07 | 日本电产株式会社 | Buffer circuit, control circuit, and information processing apparatus |
-
2011
- 2011-05-05 CN CN2011201399561U patent/CN202093786U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979179A (en) * | 2016-04-25 | 2016-09-28 | 乐视控股（北京）有限公司 | Clock signal processing circuit and clock signal processing method |
| CN111384846A (en) * | 2018-12-25 | 2020-07-07 | 日本电产株式会社 | Buffer circuit, control circuit, and information processing apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203773917U (en) | Display drive board | |
| CN103198807A (en) | Display signal processing system and circuit board and liquid crystal display device | |
| CN204348298U (en) | A kind of device LVDS vision signal being converted to EDP vision signal | |
| CN202093786U (en) | Circuit for reducing conduction radiated interference | |
| CN204215703U (en) | V-BY-ONE signal generation device | |
| CN200965775Y (en) | Voltage rising waveform controllable circuit and LCD TV | |
| CN102541330A (en) | Touch control screen and touch control display device | |
| CN205722748U (en) | The anti-electromagnetic interference circuit of a kind of Low Voltage Differential Signal and display screen interface circuit | |
| CN203232224U (en) | Liquid crystal display module with touch function | |
| WO2021120275A1 (en) | Filter circuit and electronic device | |
| CN105632371A (en) | Multifunctional customized interactive advertising player based on Android system | |
| CN205232342U (en) | On -vehicle HDMIMHL video processing device | |
| CN202076991U (en) | Impedance-matching and conducted radiated interference-reducing circuit | |
| CN204945585U (en) | COG liquid crystal display module and LCDs | |
| CN202773066U (en) | Low-cost radio frequency identification device based on audio interface | |
| CN205122155U (en) | Improve ac circuit of incomplete picture of LCD | |
| CN204031277U (en) | The jamproof mobile phone camera of a kind of filtration | |
| CN202815384U (en) | Display panel and display device | |
| CN204291091U (en) | The flexible PCB of TOC product and mobile phone | |
| CN203799152U (en) | Touch liquid crystal display | |
| CN203574533U (en) | Circuit for eliminating LCD screen ripple interference | |
| CN210627877U (en) | TCON signal conversion board circuit of industrial control display screen | |
| CN202948371U (en) | Four-way video graphics array (VGA) input-and-output-type touch control all-in-one machine | |
| CN202878906U (en) | Touch type editing and printing all-in-one machine | |
| CN205122160U (en) | On -board low temperature display driver board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU SHIYUAN ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GUANGZHOU SHIYUAN ELECTRONICS TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510663 Guangdong city of Guangzhou province Guangzhou Science City Kezhu Road No. 192 Patentee after: Guangzhou Shiyuan Electronic Technology Company Limited Address before: 510663 Guangdong city of Guangzhou province Guangzhou Science City Kezhu Road No. 192 Patentee before: Guangzhou Shiyuan Electronic Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
|
| CX01 | Expiry of patent term |