CN102622942A - Liquid crystal display capable of working in high magnetic field - Google Patents
Liquid crystal display capable of working in high magnetic field Download PDFInfo
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- CN102622942A CN102622942A CN2012101142250A CN201210114225A CN102622942A CN 102622942 A CN102622942 A CN 102622942A CN 2012101142250 A CN2012101142250 A CN 2012101142250A CN 201210114225 A CN201210114225 A CN 201210114225A CN 102622942 A CN102622942 A CN 102622942A
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Abstract
The invention relates to a liquid crystal display capable of working in a high magnetic field, which comprises a liquid crystal imaging display screen and a liquid crystal driving circuit which are separately arranged in a nuclear magnetic resonance scanning room. An integral display screen electromagnetic shielding shell is covered at the upper part, the lower part and the rear part of the liquid crystal imaging display screen, and the front part of the liquid crystal imaging display screen is provided with electromagnetic shielding glass. Three electromagnetic shielding cables correspondingly pass through three display screen electromagnetic shielding connectors at the rear part of the display screen electromagnetic shielding shell to be connected with the liquid crystal imaging display screen. The liquid crystal driving circuit and an optical transceiver are connected through a VGA (Video Graphics Array) video cable and are arranged in a chassis electromagnetic shielding shell. The other ends of the three electromagnetic shielding cables correspondingly pass through three chassis electromagnetic shielding connectors arranged on the chassis electromagnetic shielding shell to be connected with the liquid crystal driving circuit. One end of an optical fiber is connected with the optical transceiver in the chassis electromagnetic shielding shell through waveguide arranged on the chassis electromagnetic shielding shell, and the other end of the optical fiber is connected with an optical transceiver arranged outside the nuclear magnetic resonance scanning room through the original waveguide of a nuclear magnetic resonance filter arranged on the nuclear magnetic resonance scanning room.
Description
Technical field
The present invention relates to a kind of LCD, particularly about a kind of LCD that can be operated in without interfering with each other mutually in the highfield such as nuclear magnetic resonance.
Background technology
Nuclear magnetic resonance has two big characteristics: 1) nuclear magnetic resonance is one of major equipment of medical imaging diagnosis; 2) nuclear magnetic resonance is the unique equipment that is used for studying at present brain function in the world.
To characteristics 1): the patient who does nuclear magnetic resonance must lie in the narrow and small hole alone, and children or claustrophobia patient face the difficulty selection of having to inject tranquillizer at home when doing nuclear magnetic resonance check; And external careful tranquillizer system makes a large amount of patients have to abandon this inspection.If there is a kind of product can let children or claustrophobia patient do when inspection, in real time with the household carry out video calling, perhaps watch the film oneself liked, play games etc., just can solve this difficult problem.So only at least just can benefit ten million person-time every year, and still not have this product in the market in China.
To characteristics 2): brain function research is the key subjects in present human exploration field, and each big research institution of the whole world and medical institutions are all in positive utilization nuclear magnetic resonance research.When the brain function aspect doing relevant neurology and psychology is tested, must play the visual stimulus program to the experimenter.Can be used for the equipment of in nuclear magnetic resonance playing video at present, only have special projector a kind of on the market.Its shortcoming is: directly projection can only be backprojected on the projection screen indirectly; The installing space dimensional requirement is huge, and only about 1 meter space can't be installed behind the general kernel magnetic resonance imaging frame; The projection imaging area is little, and brightness is low, differentiates rate variance, and power is big, and maintenance cost is high, complicated operation; Complicacy especially is installed, and all power lead data lines all will pass screened room on electric, need to destroy the high radio shielding of original nuclear-magnetism cost, introduce external interference, influence nuclear-magnetism picture quality, the client is faced bear the risk that nuclear-magnetism producer refusal is guaranteed to keep in good repair.Therefore, above-mentioned special projector can't widespread use.
It is roomy that LCD has a screen; Beautiful in colour, advantage such as the installing space demand is little is considered and is used in the nuclear magnetic resonance, but because the strong magnetic field (1.5T～3T of nuclear magnetic resonance; Be 30,000 of magnetic field of the earth～60,000 times), any electronic device all can be damaged by magnetic field; And the electromagnetic interference (EMI) of electronic equipment self, can seriously bury in oblivion the only nuclear magnetic resonance image signal of 1 milliwatt of intensity, thus also do not have at present a kind of can be in high field intensities such as nuclear magnetic resonance the LCD of trouble free service.
Summary of the invention
To the problems referred to above, the purpose of this invention is to provide a kind of LCD that can be operated in without interfering with each other mutually in the highfield such as nuclear magnetic resonance.
For realizing above-mentioned purpose, the present invention takes following technical scheme: a kind of LCD that can be operated in the highfield is characterized in that: it comprises the liquid crystal imaging display screen and the liquid crystal display drive circuit of LCD; Said liquid crystal imaging display screen and liquid crystal display drive circuit independently divide separately and are arranged; The top of said liquid crystal imaging display screen, below and rear are covered with the display screen shielding casing that is wholely set, and the place ahead of said liquid crystal imaging display screen is provided with electromagnetic shielding glass; The rear portion of said display screen shielding casing is provided with three display screen electromagnetic screen connectors, and three electromagnetic shielded cable correspondences connect said liquid crystal imaging display screen through three said display screen electromagnetic screen connectors; Said liquid crystal display drive circuit connects fiber optic through the VGA video line, and said liquid crystal display drive circuit and fiber optic are covered with a cabinet shielding casing around it is outside as a whole, form liquid crystal display control cabinet; Said cabinet shielding casing is provided with three cabinet electromagnetic screen connectors, and the other end correspondence of three said electromagnetic shielded cables connects said liquid crystal display drive circuit through three said cabinet electromagnetic screen connectors; Also be provided with waveguide on the said cabinet shielding casing, an end of an optical fiber connects the said fiber optic in the said cabinet shielding casing through said waveguide, and the other end connects another fiber optic through another waveguide.
Said liquid crystal imaging display screen is arranged on that said NMRS is indoor, the high-intensity magnetic field district of magnetic line of force intensity 0.5 tesla of tesla to 3.0; Said liquid crystal display control cabinet is arranged on that said NMRS is indoor, magnetic line of force intensity is less than the safety zone of 20 milli teslas; One end of said optical fiber connects the said fiber optic in the said cabinet shielding casing through said waveguide, the fiber optic that the other end is arranged in the nuclear magnetic resonance pulpit through the nuclear magnetic resonance wave filter first wife waveguide connection one that is arranged on the said NMRS chamber.
Said liquid crystal imaging display screen is arranged on the traversing carriage, and said traversing carriage material comprises aluminium alloy base and aluminium section bar support arm, and said aluminium alloy base is provided with pure stainless steel castor.
The shielded metal silk screen that adopts said electromagnetic shielding glass to carry between said electromagnetic shielding glass and the said display screen shielding casing links together through the mechanicalness compacting.
Three said electromagnetic shielded cables between said liquid crystal imaging display screen and the liquid crystal display control cabinet comprise two LVDS data lines and a power lead.
Said display screen shielding casing and cabinet shielding casing all adopt pure stainless steel, aluminum alloy materials to process; Said display screen electromagnetic screen connector, cabinet electromagnetic screen connector are the dedicated connector with electromagnetic screen effect.
Said liquid crystal display drive circuit comprises power panel, liquid crystal display drive plate, LVDS change-over panel and remote control codan lamp control panel.
The present invention is owing to take above technical scheme; It has the following advantages: 1, the present invention utilizes nonmagnetic, the diamagnetic principle of liquid crystal display crystalline material; The liquid crystal imaging display screen and the liquid crystal display drive circuit branch of LCD are arranged, make the liquid crystal imaging display screen be operated in the high-intensity magnetic field district, and control section is operated in the safety zone that the magnetic line of force extends; Thereby make LCD that the possibility of operate as normal in the highfield arranged, avoided electronic product short defective of life-span in magnetic field simultaneously.2, the present invention is directed to the high field intensity characteristic; Comprehensive employing does not have magnetic components and parts and starting material; The top of liquid crystal imaging display screen, below and rear are covered with the display screen shielding casing that is wholely set; Liquid crystal display drive circuit and fiber optic are covered with a cabinet shielding casing around it is outside as a whole, form liquid crystal display control cabinet; Connect between liquid crystal imaging display screen and the liquid crystal display control cabinet and adopt electromagnetic screen private cable and connector, guaranteed the mutual noiseless work of equipment and nuclear magnetic resonance.3, the present invention connects fiber optic and the outdoor fiber optic of NMRS in the cabinet shielding casing through optical fiber, therefore, realizes that in the image transmission optical fiber transmits, and has thoroughly avoided introducing the possibility of external interference.4, the present invention and concrete the use are combined closely, and screen is roomy, and is beautiful in colour, can be installed in the space only about 1 meter behind the NMRS frame, and 0.5 square metre is enough to, and the installing space demand is little.5, liquid crystal imaging display screen of the present invention is installed on the traversing carriage; Easy to operate, applying flexible can be indoor mobile arbitrarily at NMRS; Not only can be used as the brain function visual stimulator; Promote the research of brain function easily and effectively, and can be used as LCD and independently use, in the time of can letting the patient do the nuclear-magnetism inspection; In real time and the household carry out the video/audio communication, watch the film oneself liked, play games etc., a difficult problem of having had to inject tranquillizer when effectively having avoided child and claustrophobia patient to do nuclear-magnetism.The present invention can be widely used in the highfields such as nuclear magnetic resonance.
Description of drawings
Fig. 1 is a structural representation of the present invention
Fig. 2 is a work synoptic diagram of the present invention
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed description.
As shown in Figure 1, it is indoor that the present invention is arranged on NMRS, and the present invention was arranged the liquid crystal imaging display screen 1 of LCD in 2 minutes with liquid crystal display drive circuit.The top of liquid crystal imaging display screen 1, below and rear are covered with the display screen shielding casing 3 that is wholely set; The place ahead of liquid crystal imaging display screen 1 is provided with electromagnetic shielding glass 4, and the shielded metal silk screen mechanicalness compacting of adopting electromagnetic shielding glass 4 to carry between electromagnetic shielding glass 4 and the display screen shielding casing 3 links together.It is corresponding to three display screen electromagnetic screen connectors, 5 connection liquid crystal imaging display screens 1 that the rear portion of display screen shielding casing 3 is provided with 5, three electromagnetic shielded cables of three display screen electromagnetic screen connectors 6.Liquid crystal display drive circuit 2 is through VGA (Video Graphics Array; Video Graphics Array) video line 7 connects fiber optic 8; Liquid crystal display drive circuit 2 and fiber optic 8 are covered with a cabinet shielding casing 9 around it is outside as a whole, form liquid crystal display control cabinet.Cabinet shielding casing 9 is provided with three cabinet electromagnetic screen connectors 10, and the other end of above-mentioned three electromagnetic shielded cables 6 connects liquid crystal display drive circuit 2 through three cabinet electromagnetic screen connectors 10.Also be provided with waveguide 11 on the cabinet shielding casing 9; The fiber optic 8 that one end of an optical fiber 12 connects in the cabinet shielding casing 9 through waveguide 11, the other end is arranged on the outdoor fiber optic of NMRS 14 through nuclear magnetic resonance wave filter first wife waveguide 13 connections one that are arranged on the NMRS chamber.
As shown in Figure 2, nuclear magnetic resonance shielding machine room 15 comprises NMRS chamber 16 and nuclear magnetic resonance pulpit 17; Be provided with NMRS frame 18 in the NMRS chamber 16, be used to carry out NMRS.Liquid crystal imaging display screen 1 of the present invention, and the liquid crystal display control cabinet that liquid crystal display drive circuit 2, fiber optic 8 and cabinet shielding casing 9 are formed all is arranged in the NMRS chamber 17.Wherein, Nonmagnetic, diamagnetic liquid crystal imaging display screen 1 is operated in the high-intensity magnetic field district of magnetic line of force intensity 0.5 tesla of tesla to 3.0; And liquid crystal display control cabinet is operated in the safety zone that electromagnetic shielded cable 6 extends; The magnetic line of force intensity of safety zone has been avoided electronic product short defective of life-span in magnetic field less than 20 milli teslas.The fiber optic 14 of NMRS outdoor 16 is arranged in the nuclear magnetic resonance pulpit 17.
Use for convenient, the present invention is installed in liquid crystal imaging display screen 1 on the traversing carriage.The traversing carriage material adds the aluminium section bar support arm for the aluminium alloy base, and pure stainless steel castor is installed on the base, can be indoor mobile arbitrarily neatly at NMRS.
In the foregoing description; Liquid crystal display drive circuit 2 comprises power panel, liquid crystal display drive plate, LVDS (Low-Voltage Differential Signaling; Low Voltage Differential Signal) change-over panel, remote control codan lamp control panel etc.; Interconnecting between each parts belongs to conventional and is provided with, and no longer specifies at this.
The present invention is directed to working environment is the high field intensity characteristic, and comprehensive employing does not have magnetic components and parts and starting material in design: display screen shielding casing 3 all adopts materials such as pure stainless steel, aluminium alloy, electromagnetic shielding glass with cabinet shielding casing 9.Three electromagnetic shielded cables 6 between liquid crystal imaging display screen 1 and the liquid crystal display control cabinet are for prolonging the magnetic line of force, and it comprises two LVDS data lines and a power lead.Display screen electromagnetic screen connector 5, the dedicated connector of cabinet electromagnetic screen connector 10 for having the electromagnetic screen effect have guaranteed that fully the image demonstration is not disturbed by high-intensity magnetic field.
The present invention uses the electromagnetic screen processing technology, guarantees the electric continuity validity on the housing different materials connects, and disturbs thereby the present invention is not produced nuclear magnetic resonance simultaneously; In the image transmission, adopt optical fiber to transmit, thoroughly avoided the possibility of introducing external interference owing to installing.
Above-mentioned each embodiment only is used to explain the present invention, and wherein the structure of each parts, connected mode etc. all can change to some extent, and every equivalents of on the basis of technical scheme of the present invention, carrying out and improvement all should not got rid of outside protection scope of the present invention.
Claims (10)
1. LCD that can be operated in the highfield, it is characterized in that: it comprises the liquid crystal imaging display screen and the liquid crystal display drive circuit of LCD; Said liquid crystal imaging display screen and liquid crystal display drive circuit independently divide separately and are arranged; The top of said liquid crystal imaging display screen, below and rear are covered with the display screen shielding casing that is wholely set, and the place ahead of said liquid crystal imaging display screen is provided with electromagnetic shielding glass; The rear portion of said display screen shielding casing is provided with three display screen electromagnetic screen connectors, and three electromagnetic shielded cable correspondences connect said liquid crystal imaging display screen through three said display screen electromagnetic screen connectors; Said liquid crystal display drive circuit connects fiber optic through the VGA video line, and said liquid crystal display drive circuit and fiber optic are covered with a cabinet shielding casing around it is outside as a whole, form liquid crystal display control cabinet; Said cabinet shielding casing is provided with three cabinet electromagnetic screen connectors, and the other end correspondence of three said electromagnetic shielded cables connects said liquid crystal display drive circuit through three said cabinet electromagnetic screen connectors; Also be provided with waveguide on the said cabinet shielding casing, an end of an optical fiber connects the said fiber optic in the said cabinet shielding casing through said waveguide, and the other end connects another fiber optic through another waveguide.
2. a kind of LCD that can be operated in the highfield as claimed in claim 1 is characterized in that: said liquid crystal imaging display screen is arranged on that said NMRS is indoor, the high-intensity magnetic field district of magnetic line of force intensity 0.5 tesla of tesla to 3.0; Said liquid crystal display control cabinet is arranged on that said NMRS is indoor, magnetic line of force intensity is less than the safety zone of 20 milli teslas; One end of said optical fiber connects the said fiber optic in the said cabinet shielding casing through said waveguide, the fiber optic that the other end is arranged in the nuclear magnetic resonance pulpit through the nuclear magnetic resonance wave filter first wife waveguide connection one that is arranged on the said NMRS chamber.
3. a kind of LCD that can be operated in the highfield as claimed in claim 1; It is characterized in that: said liquid crystal imaging display screen is arranged on the traversing carriage; Said traversing carriage material comprises aluminium alloy base and aluminium section bar support arm, and said aluminium alloy base is provided with pure stainless steel castor.
4. a kind of LCD that can be operated in the highfield as claimed in claim 2; It is characterized in that: said liquid crystal imaging display screen is arranged on the traversing carriage; Said traversing carriage material comprises aluminium alloy base and aluminium section bar support arm, and said aluminium alloy base is provided with pure stainless steel castor.
5. like claim 1 or 2 or 3 or 4 described a kind of LCDs that can be operated in the highfield; It is characterized in that: the shielded metal silk screen that adopts said electromagnetic shielding glass to carry between said electromagnetic shielding glass and the said display screen shielding casing links together through the mechanicalness compacting.
6. like claim 1 or 2 or 3 or 4 described a kind of LCDs that can be operated in the highfield, it is characterized in that: three said electromagnetic shielded cables between said liquid crystal imaging display screen and the liquid crystal display control cabinet comprise two LVDS data lines and a power lead.
7. a kind of LCD that can be operated in the highfield as claimed in claim 5 is characterized in that: three said electromagnetic shielded cables between said liquid crystal imaging display screen and the liquid crystal display control cabinet comprise two LVDS data lines and a power lead.
8. like claim 1 or 2 or 3 or 4 or 7 described a kind of LCDs that can be operated in the highfield, it is characterized in that: said display screen shielding casing and cabinet shielding casing all adopt pure stainless steel, aluminum alloy materials to process; Said display screen electromagnetic screen connector, cabinet electromagnetic screen connector are the dedicated connector with electromagnetic screen effect.
9. like claim 5 or 6 described a kind of LCDs that can be operated in the highfield, it is characterized in that: said display screen shielding casing and cabinet shielding casing all adopt pure stainless steel, aluminum alloy materials to process; Said display screen electromagnetic screen connector, cabinet electromagnetic screen connector are the dedicated connector with electromagnetic screen effect.
10. like each described a kind of LCD that can be operated in the highfield of claim 1～9, it is characterized in that: said liquid crystal display drive circuit comprises power panel, liquid crystal display drive plate, LVDS change-over panel and remote control codan lamp control panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114225.0A CN102622942B (en) | 2012-04-18 | 2012-04-18 | Liquid crystal display capable of working in high magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114225.0A CN102622942B (en) | 2012-04-18 | 2012-04-18 | Liquid crystal display capable of working in high magnetic field |
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| Publication Number | Publication Date |
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| CN102622942A true CN102622942A (en) | 2012-08-01 |
| CN102622942B CN102622942B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210114225.0A Expired - Fee Related CN102622942B (en) | 2012-04-18 | 2012-04-18 | Liquid crystal display capable of working in high magnetic field |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270918A (en) * | 2014-09-25 | 2015-01-07 | 北京航空航天大学 | Display control panel with high electromagnetic compatibility |
| WO2019024407A1 (en) * | 2017-08-04 | 2019-02-07 | 郑州云海信息技术有限公司 | Circuit system for reducing front vga cable interference |
| CN109788256A (en) * | 2019-01-30 | 2019-05-21 | 温州大学 | A kind of display system of multi-modality images |
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| JPH06258660A (en) * | 1993-03-02 | 1994-09-16 | Seiko Epson Corp | Liquid crystal display device |
| JP2000132278A (en) * | 1998-10-22 | 2000-05-12 | International Intelligent Infomation:Kk | Intellectual information household appliance and information panel |
| US20070076138A1 (en) * | 2005-09-30 | 2007-04-05 | Yung-Chun Chiu | Liquid crystal display monitor |
| US20070247053A1 (en) * | 2006-01-27 | 2007-10-25 | Young-Gil Yoo | Display apparatus |
| CN101118347A (en) * | 2000-06-15 | 2008-02-06 | 夏普株式会社 | Liquid crystal display device, driving method of liquid crystal display device, driving method of illumination device, and driving method of emitter |
| CN202563848U (en) * | 2012-04-18 | 2012-11-28 | 钟瑞芬 | Liquid crystal device capable of working in high magnetic field |
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2012
- 2012-04-18 CN CN201210114225.0A patent/CN102622942B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06258660A (en) * | 1993-03-02 | 1994-09-16 | Seiko Epson Corp | Liquid crystal display device |
| JP2000132278A (en) * | 1998-10-22 | 2000-05-12 | International Intelligent Infomation:Kk | Intellectual information household appliance and information panel |
| CN101118347A (en) * | 2000-06-15 | 2008-02-06 | 夏普株式会社 | Liquid crystal display device, driving method of liquid crystal display device, driving method of illumination device, and driving method of emitter |
| US20070076138A1 (en) * | 2005-09-30 | 2007-04-05 | Yung-Chun Chiu | Liquid crystal display monitor |
| US20070247053A1 (en) * | 2006-01-27 | 2007-10-25 | Young-Gil Yoo | Display apparatus |
| CN202563848U (en) * | 2012-04-18 | 2012-11-28 | 钟瑞芬 | Liquid crystal device capable of working in high magnetic field |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104270918A (en) * | 2014-09-25 | 2015-01-07 | 北京航空航天大学 | Display control panel with high electromagnetic compatibility |
| WO2019024407A1 (en) * | 2017-08-04 | 2019-02-07 | 郑州云海信息技术有限公司 | Circuit system for reducing front vga cable interference |
| CN109788256A (en) * | 2019-01-30 | 2019-05-21 | 温州大学 | A kind of display system of multi-modality images |
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| Publication number | Publication date |
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| CN102622942B (en) | 2014-03-12 |
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