CN101719340B - LED image display device, as well as television and projector - Google Patents
LED image display device, as well as television and projector Download PDFInfo
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- CN101719340B CN101719340B CN200910213022.5A CN200910213022A CN101719340B CN 101719340 B CN101719340 B CN 101719340B CN 200910213022 A CN200910213022 A CN 200910213022A CN 101719340 B CN101719340 B CN 101719340B
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Abstract
The invention relates to an LED image display device, as well as a television and a projector which are formed based on the LED image display device, belonging to the technical field of display devices. The device comprises an image processor and an auxiliary circuit thereof, an LED array, a MEMS optical scanning mirror, a display screen corresponding to the MEMS optical scanning mirror surface, an LED driving circuit and a field scanning circuit; an input terminal of the image processor is connected with an external video frequency signal source; an output terminal of the image processor is respectively connected with an input terminal of the LED driving circuit and an input terminal of the field scanning circuit; an output terminal of the LED driving circuit is connected with the LED array; an output terminal of the field scanning circuit is connected with the MEMS optical scanning mirror; and the LED array is corresponding to the MEMS optical scanning mirror in parallel. Based on the LED image display device, the television also comprises a television signal receiving device, an audio/video input interface, a television signal processing circuit, an audio/video signal processing circuit and a loudspeaker. Based on the LED image display device, the display screen is not used any more in the projector. The LED image display device, as well as the television and the projector, not only have low cost, but also can generate images with high definition, fidelity colors and large screen.
Description
Technical field
The present invention relates to a kind of image display device, relate to a kind of television set and the projecting apparatus that use this image display device simultaneously, belong to audio-visual apparatus technical field.
Background technology
What image display device was applied in daily life has a lot, wherein common are the image display device be applied in television set and projector.Existing television set has picture tube (cathode-ray tube CRT) television set, plasma (PDP) television set and liquid crystal (LCD) television set etc.Television picture tube TV set is on the decline just gradually; PDP power consumption of television is large, easily burns screen, is difficult to do less; Liquid crystal TV set color is not true to nature, has grid, and reaction speed is slow.These existing television sets also have common defect: investment is large, and the cycle is long, and manufacturing cost is high, and display screen is difficult to do more, and fragile.Existing projector utilizes the image processor (TV engine) identical with television set increase projecting lens and formed, and its defect is: power consumption greatly, not environmentally, projector distance is long, is therefore difficult at average family universal.
Also has a large amount of image display device adopting LED to make at present, disclosed in the Chinese patent of the patent No. 02293374.3, a kind of LED display plays the device of TV signal, and this device TV signal is converted into RGB tristimulus signal and broadcasts with LED display after completing the field scan of pixel and line scanning.These LED image display devices need at substantial to make material (as needed a large amount of LED and control chip).
Again according to associated media, abroad (as Microvision company of the U.S.) developed a kind of adopt the MEMS of single minute surface (Micro Electromechanical System, i.e. microelectromechanical systems) light scanning lens scanning element after obtain the micro projector of projected image.The MEMS light scanning lens of this micro projector is the field scan and the line scanning that complete pixel simultaneously, but because MEMS light scanning lens cannot complete high-frequency line scanning at present, therefore this micro projector cannot form large-size images clearly, can only for bottom projection occasion (projection as on mobile phone).In addition, this micro projector is employing three look laser scanning pixel, and therefore cost is higher.
Summary of the invention
The technical problem to be solved in the present invention is: propose that a kind of consumptive material is few, low cost of manufacture can produce the image display device of the brand new of the true to nature and large-screen image of high definition, color.
One of further technical problem that the present invention will solve is: formed completely different with the structure of television set in the past on the basis of above-mentioned image display device and have that consumptive material is few, low cost of manufacture also can produce high definition, color is true to nature and the television set of large-screen image.
Two of the further technical problem that the present invention will solve is: utilize above-mentioned image display device with formed completely different with the structure of projecting apparatus in the past and have that consumptive material is few, the long projecting apparatus that also can produce the true to nature and large-screen image of high definition, color of low cost of manufacture, projector distance.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: a kind of LED image display device, comprises image processor and auxiliary circuit, LED array, MEMS optical scanning mirror, the display screen corresponding with the minute surface of MEMS optical scanning mirror of output field sweep signal and line scanned video signal after the video frequency signal processing for being inputted outside, also comprise for the LED drive circuit according to described line scanned video signal controlling LED array switch, for the field-scanning circuit back and forth deflected according to described field scan signal controlling MEMS optical scanning mirror, the input termination outer video signal source of described image processor, the line scanned video signal output part of described image processor and field scan signal output part connect the input of LED drive circuit and the input of field-scanning circuit respectively, the output termination LED array of described LED drive circuit, the output termination MEMS optical scanning mirror of described field-scanning circuit, described LED array parallel with MEMS optical scanning mirror relative one arranges LED array.
When LED image display device of the present invention uses, outer video signal inputs to image processor by various interface, field scan signal and line scanned video signal is produced after image processor process, wherein field scan signal exports to field-scanning circuit, amplify through field-scanning circuit and export to MEMS optical scanning mirror after distortion process, driving MEMS optical scanning mirror to carry out the past complex polarization of field scan formula according to field scan signal; Line scanned video signal then exports to LED drive circuit, through LED drive circuit control one row LED array by row scan video signal send light signal, reflexed on display screen by MEMS optical scanning mirror with field scan form after on this optical signal launch to MEMS optical scanning mirror, so just form image on the display screen.
One row's LED array is combined with parallel relative position relationship with MEMS optical scanning mirror by LED image display device of the present invention dexterously, reflexes on display screen and can form image again after making to be transmitted into MEMS optical scanning mirror by the utilizing emitted light of row's LED array of line scanned video signal controlling with field scan form.The beneficial effect of LED image display device of the present invention has: one, compare existing LED display and save the consumptive materials such as LED, and reduce manufacturing cost; Two, compare the display unit of existing employing MEMS optical scanning mirror, produce utilizing emitted light and the radiative high vividness of LED because LED array can complete high-frequency line scanned video signal, therefore can produce the image that high definition, color are true to nature; Three, due to MEMS optical scanning mirror and one row LED array can do very long, therefore can produce the image of large-screen; Four, compare existing projection display equipment, greatly reduce projector distance.
It is worth mentioning that, row's LED array that LED image display device of the present invention embodies and the combining structure of MEMS optical scanning mirror, cannot imagine before the application is open.Because brightness that traditional view thinks LED utilizing emitted light is low, heat radiation is difficult, MEMS optical scanning mirror can not do large etc., and both therefore can not be expected to combine.The present inventor courageously breaches this traditional prejudice, devises the image display device of the present invention of completely different structure in the past.Therefore, image display device of the present invention should not be the apparent device that " wise afterwards " is seen.
In order to solve one of above-mentioned further technical problem, one of further technical scheme that the present invention proposes is: a kind of television set, comprise TV signal receiver, audio frequency and video input interface, also television signal processing circuit, audio-video signal processing circuit, loud speaker, for by the image processor of output field sweep signal and line scanned video signal after video frequency signal processing and auxiliary circuit, LED array, MEMS optical scanning mirror, the television display screen curtain corresponding with the minute surface of MEMS optical scanning mirror, also comprise for the LED drive circuit according to described line scanned video signal controlling LED array switch, for the field-scanning circuit back and forth deflected according to described field scan signal controlling MEMS optical scanning mirror, the input termination outer video signal source of described image processor, the line scanned video signal output part of described image processor and field scan signal output part connect the input of LED drive circuit and the input of field-scanning circuit respectively, the output termination LED array of described LED drive circuit, the output termination MEMS optical scanning mirror of described field-scanning circuit, described LED array is a relative row parallel with MEMS optical scanning mirror.
Television set of the present invention produces the process of image substantially as previously mentioned.Television set of the present invention and aforementioned LED image display device main difference: 1) image processor is each concrete TV engine that television set is developed specially, and display screen is specialized television machine display screen; 2) also containing various be specially supporting receiving system, interface and the treatment circuit of television set; These all existing television sets had.
Existing various television set compared by television set of the present invention, can not only produce the image of the true to nature and large-screen of high definition, color, and low in energy consumption, low cost, compact conformation.In addition, the more important thing is: the television set that the present invention proposes a kind of complete difference brand new in the past, thus open a brand-new road for the development of television set.
In order to solve above-mentioned further technical problem two, two of the further technical scheme that the present invention proposes is: a kind of projecting apparatus, comprises for the MEMS optical scanning mirror by the image processor of output field sweep signal and line scanned video signal after video frequency signal processing and auxiliary circuit, LED array and corresponding display screen, also comprise for the LED drive circuit according to described line scanned video signal controlling LED array switch, for the field-scanning circuit back and forth deflected according to described field scan signal controlling MEMS optical scanning mirror, the input termination outer video signal source of described image processor, the line scanned video signal output part of described image processor and field scan signal output part connect the input of LED drive circuit and the input of field-scanning circuit respectively, the output termination LED array of described LED drive circuit, the output termination MEMS optical scanning mirror of described field-scanning circuit, described LED array is a relative row parallel with MEMS optical scanning mirror.
Projecting apparatus of the present invention produces the process of image substantially as previously mentioned, its in use, can select any can the facility of projects images as display screen (as wall, calico etc.).Projecting apparatus of the present invention and aforementioned LED image display device unlike: save display screen.
Existing various projecting apparatus compared by projecting apparatus of the present invention, the image of the true to nature and large-screen of high definition, color can not only be produced, and low in energy consumption, low cost, compact conformation, environment friendly and pollution-free, projector distance is short, especially, projecting apparatus of the present invention can accomplish that aspectant minimum distance projects.In addition, the more important thing is: the projecting apparatus that the present invention proposes a kind of complete difference brand new in the past, thus open a brand-new road for the development of projecting apparatus.
The improvement of technique scheme is: be provided with closure casing outside described MEMS optical scanning mirror, is provided with the optical window formed by glass above the minute surface that described closure casing is positioned at MEMS optical scanning mirror.
The further improvement of technique scheme is: described LED array is also provided with heat abstractor, described heat abstractor comprises the substrate reclined with LED, the microcirculation water pipe be connected with substrate, is located at Micropump on microcirculation water pipe and micro-heat exchanger, is provided with gentle breeze fan near described micro-heat exchanger.
Improving further again of technique scheme is: described MEMS optical scanning mirror on silicon chip, adopts plating and produced by micro processing drive coil and formed, and it is simultaneously plated film minute surface, and its another side is drive coil and magnet; The output termination drive coil of described field-scanning circuit.
Further one of improvement of technique scheme is: described LED array is formed by multiple reflective grillages is in a row, settles three three-color LEDs in described reflective lattice.
Two of the further improvement of technique scheme is: described LED array is formed by multiple reflective grillages is in a row, and settle three three-color LEDs and four prisms in described reflective lattice, described three three-color LEDs split three limits at four prisms.
The improvement of one of above-mentioned further technical scheme is: described display screen is superposed successively by sawtooth refractive layer, black layer and scattering layer and forms.
The further improvement of one of above-mentioned further technical scheme is: also containing earphone interface and other output interfaces, described TV signal receiver comprises wireless television signal receiver and cable television signal receiver, described audio frequency and video input interface comprises S terminal input interface, TV signal rf input interface, network input interface, USB input interface, IEEE 1394 digital input interface and high-definition digital input interface, other output interfaces described comprise digital audio output interface, digital video input interface, IEEE 1394 digital output interface and R232 digital output interface.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, LED image display device of the present invention is described further.
Fig. 1 is the structural representation of the LED image display device of the embodiment of the present invention one.
Fig. 2 is the single-sided structure schematic diagram of MEMS optical scanning mirror in Fig. 1.
Fig. 3 is the partial structurtes schematic diagram of a kind of form of LED array in Fig. 1.
Fig. 4 is the partial structurtes schematic diagram of the another kind of form of LED array in Fig. 1.
Fig. 5 is the structural representation of LED array heat abstractor in Fig. 1.
Fig. 6 is the schematic diagram of LED drive circuit in Fig. 1.
Fig. 7 is the schematic diagram of field-scanning circuit in Fig. 1.
Fig. 8 is the structural representation of the television set of the embodiment of the present invention two.
Fig. 9 is the structural representation of display screen in Fig. 8.
Embodiment
Embodiment one
The LED image display device of the present embodiment as shown in Figure 1, comprise image processor 1 and auxiliary circuit 2, LED array 3, MEMS optical scanning mirror 4, the display screen 5 corresponding with the minute surface of MEMS optical scanning mirror 4, also comprise LED drive circuit 6 and field-scanning circuit 7.Image processor 1 and auxiliary circuit 2 thereof are for output field sweep signal and line scanned video signal after the video frequency signal processing that inputted outside, LED drive circuit 6 is for according to line scanned video signal controlling LED array 3 switch, and field-scanning circuit 7 is for back and forth deflecting according to field scan signal controlling MEMS optical scanning mirror.LED array 3 is relative rows parallel with MEMS optical scanning mirror 4.
The input termination outer video signal source of image processor 1, the line scan signals output of image processor 1 and field scan signal output part connect the input of LED drive circuit 6 and the input of field-scanning circuit 7 respectively, the input of the output termination LED array 3 of LED drive circuit 7, the drive coil 8 (as shown in Figure 2 and Figure 7) of the output termination MEMS optical scanning mirror 4 of field-scanning circuit 7.
MEMS optical scanning mirror 4 adopts plating and produced by micro processing drive coil and being formed on silicon chip, and its one side is silver-plated or the plated film minute surface of formation of aluminizing, and its another side as shown in Figure 2, is drive coil 8 and magnet 22.Outside MEMS optical scanning mirror 4, be provided with closure casing, above the minute surface being positioned at MEMS optical scanning mirror 4 at closure casing, be provided with the optical window (not shown) formed by glass.
As shown in Figure 3, three three looks (red, green, blue) LED12 are placed in reflective lattice 13 a kind of form of LED array 3, and multiple reflective lattice 13 are arranged in a row, and the quantity of reflective lattice 13 is determined according to required display resolution.As shown in Figure 4, three three looks (red, green, blue) LED12 split on three limits of four prisms 14 and are placed in reflective lattice the another kind of form of LED array 3, and LED array 3 is also provided with heat abstractor 15.Heat abstractor 15 as shown in Figure 5, comprises the substrate 16 reclined with LED12, and the microcirculation water pipe 17 be connected with substrate 16 is located at the Micropump 18 on microcirculation water pipe 17 and micro-heat exchanger 19, near micro-heat exchanger 19, be provided with gentle breeze fan 20.
LED drive circuit 6 as shown in Figure 6, image processor 1 isolates line scanned video signal, (the SnapDrive driving chip that the fast outstanding science and technology in Taiwan is produced is adopted through scanning monitor 10 (generally commercially available) and indicative control unit 11, model P2506), driving LED array 3 sends required light according to row-field scanning vision signal.Scanning monitor 10 mainly manages the signals such as numeral and clock.Indicative control unit 11 can promote whole screen GTG display and refreshing frequency and reduce electric current output distortion rate, conventional ADS driving chip due to electric current climb and fall time longer, when not reaching setting electric current, its nonlinear object can affect the characteristics of luminescence (wavelength) of LED, easily causes the phenomenon of display screen color distortion.
Field-scanning circuit 7 as shown in Figure 7, sawtooth waveforms field excitation signal after calibrated delivers to field scan module 9 (field scan module 9 adopts the model TA8427K chip of Toshiba), scan module 9 inside on the scene is after blasting amplification, complementary push-pull power amplification, exporting significantly sweep current, to the drive coil 8 of MEMS optical scanning mirror 4, thus drives MEMS optical scanning mirror 4 to produce back and forth deflection by field scan form.Field feedback signal sends the distortion circuit for rectifying of image processor 1 back to, linearly corrects, improve field scan distortion for field scan.
Through applicant's many experiments, the LED image display device of the present embodiment can produce desirable image.
Embodiment two
The present embodiment is the television set formed on the basis of embodiment one LED image display device, as shown in Figure 8, this television set difference except identical with embodiment one LED image display device is: also containing TV signal receiver, audio frequency and video input interface, also television signal processing circuit 25, audio-video signal processing circuit 26, loud speaker 27, earphone interface 28 and other output interfaces.TV signal receiver comprises wireless television signal receiver 23 and cable television signal receiver 24.Audio frequency and video input interface comprises S terminal (a kind of professional standard interface of video) input interface 29, TV signal rf input interface 30, network input interface 31, USB input interface 32, (IEEE1394 interface also claims " live wire " interface, LINK interface to IEEE 1394, IEEE1394 is a high speed, short distance transfer of data exchange agreement standard, IEEE and Institute of Electrical and Electronic Engineers) digital input interface 33 and high-definition digital input interface 34.Other output interfaces comprise digital audio output interface 35, digital video input interface 36, IEEE 1394 digital output interface 37 and R232 (one of communication interface on PC, the asynchronous transmission standard interface formulated by Electronic Industries Association ElectronicIndustries Association-EIA) digital output interface 38.
The image processor 1 of the present embodiment television set adopts generally commercially available TV engine, and model is as TMS320DM335 or TMS320DM6467 etc. of TI (Texas Instrument).
The display screen 5 of the present embodiment television set as shown in Figure 9, is superposed successively by zigzag refracting layer 39, black layer 40 and scattering layer 41 and forms.
The configuration of television set other parts except identical with embodiment one LED image display device of the present embodiment can also have other to change as required.
Embodiment three
The present embodiment is the projecting apparatus formed on the basis of embodiment one LED image display device, this projecting apparatus is substantially identical with LED image display device, difference removes display screen 5, image processor 1 adopts generally commercially available projecting apparatus purpose processor, and model is as the OMAP35X+TMS320DM644X etc. of TI (Texas Instrument); Other repeat no more.
The concrete technical scheme be not limited to described in above-described embodiment of the present invention, the component that the drive coil as MEMS optical scanning mirror 4 also can be able to drive MEMS optical scanning mirror 4 back and forth to deflect by motor or other replaces; Etc..All employings are equal to replaces the protection range that the technical scheme formed is application claims.
Claims (10)
1. a LED image display device, comprises image processor and auxiliary circuit, LED array, MEMS optical scanning mirror, the display screen corresponding with the minute surface of MEMS optical scanning mirror of output field sweep signal and line scanned video signal after the video frequency signal processing for being inputted outside, it is characterized in that: also comprise for the LED drive circuit according to described line scanned video signal controlling LED array switch, for the field-scanning circuit back and forth deflected according to described field scan signal controlling MEMS optical scanning mirror, the input termination outer video signal source of described image processor, the line scanned video signal output part of described image processor and field scan signal output part connect the input of LED drive circuit and the input of field-scanning circuit respectively, the output termination LED array of described LED drive circuit, the output termination MEMS optical scanning mirror of described field-scanning circuit, described LED array parallel with MEMS optical scanning mirror relative one arranges LED array.
2. LED image display device according to claim 1, is characterized in that: be provided with closure casing outside described MEMS optical scanning mirror, is provided with the optical window formed by glass above the minute surface that described closure casing is positioned at MEMS optical scanning mirror.
3. LED image display device according to claim 2, it is characterized in that: described LED array is also provided with heat abstractor, described heat abstractor comprises the substrate reclined with LED, the microcirculation water pipe be connected with substrate, is located at Micropump on microcirculation water pipe and micro-heat exchanger, is provided with gentle breeze fan near described micro-heat exchanger.
4. LED image display device according to claim 3, is characterized in that: described MEMS optical scanning mirror on silicon chip, adopts plating and produced by micro processing drive coil and formed, and it is simultaneously plated film minute surface, and its another side is drive coil and magnet; Drive coil described in the output termination of described field-scanning circuit.
5. according to the arbitrary described LED image display device of claim 1-4, it is characterized in that: described LED array is formed by multiple reflective grillages is in a row, in described reflective lattice, settle three three-color LEDs.
6. according to the arbitrary described LED image display device of claim 1-4, it is characterized in that: described LED array is formed by multiple reflective grillages is in a row, settle three three-color LEDs and four prisms in described reflective lattice, described three three-color LEDs split three limits at four prisms.
7. a television set, comprise TV signal receiver, audio frequency and video input interface, also television signal processing circuit, audio-video signal processing circuit, loud speaker, for by the image processor of output field sweep signal and line scanned video signal after video frequency signal processing and auxiliary circuit, LED array, MEMS optical scanning mirror, the television display screen curtain corresponding with the minute surface of MEMS optical scanning mirror, it is characterized in that: also comprise for the LED drive circuit according to described line scanned video signal controlling LED array switch, for the field-scanning circuit back and forth deflected according to described field scan signal controlling MEMS optical scanning mirror, the input termination outer video signal source of described image processor, the line scanned video signal output part of described image processor and field scan signal output part connect the input of LED drive circuit and the input of field-scanning circuit respectively, the output termination LED array of described LED drive circuit, the output termination MEMS optical scanning mirror of described field-scanning circuit, described LED array is a relative row parallel with MEMS optical scanning mirror.
8. television set according to claim 7, is characterized in that: described display screen is superposed successively by sawtooth refractive layer, black layer and scattering layer and forms.
9. television set according to claim 8, it is characterized in that: also containing earphone interface and other output interfaces, described TV signal receiver comprises wireless television signal receiver and cable television signal receiver, described audio frequency and video input interface comprises S terminal input interface, TV signal rf input interface, network input interface, USB input interface, IEEE 1394 digital input interface and high-definition digital input interface, other output interfaces described comprise digital audio output interface, digital video input interface, IEEE 1394 digital output interface and R232 digital output interface.
10. a projecting apparatus, comprises for the MEMS optical scanning mirror by the image processor of output field sweep signal and line scanned video signal after video frequency signal processing and auxiliary circuit, LED array and corresponding display screen, it is characterized in that: also comprise for the LED drive circuit according to described line scanned video signal controlling LED array switch, for the field-scanning circuit back and forth deflected according to described field scan signal controlling MEMS optical scanning mirror, the input termination outer video signal source of described image processor, the line scanned video signal output part of described image processor and field scan signal output part connect the input of LED drive circuit and the input of field-scanning circuit respectively, the output termination LED array of described LED drive circuit, the output termination MEMS optical scanning mirror of described field-scanning circuit, described LED array is a relative row parallel with MEMS optical scanning mirror.
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| CN200910213022.5A CN101719340B (en) | 2009-11-03 | 2009-11-03 | LED image display device, as well as television and projector |
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| CN200910213022.5A CN101719340B (en) | 2009-11-03 | 2009-11-03 | LED image display device, as well as television and projector |
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| CN101719340A CN101719340A (en) | 2010-06-02 |
| CN101719340B true CN101719340B (en) | 2015-04-22 |
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| CN113542701A (en) * | 2020-04-20 | 2021-10-22 | 青岛海信激光显示股份有限公司 | Projection display method and projection equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599522A (en) * | 2003-09-17 | 2005-03-23 | 精工爱普生株式会社 | Display panel, method of manufacturing display panel, and display apparatus |
| CN1821831A (en) * | 2005-02-16 | 2006-08-23 | 精工爱普生株式会社 | Light scanning device and image display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005317439A (en) * | 2004-04-30 | 2005-11-10 | Seiko Epson Corp | Display panel and display device |
| JP4169017B2 (en) * | 2005-07-07 | 2008-10-22 | セイコーエプソン株式会社 | Image display device and control method of image display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1599522A (en) * | 2003-09-17 | 2005-03-23 | 精工爱普生株式会社 | Display panel, method of manufacturing display panel, and display apparatus |
| CN1821831A (en) * | 2005-02-16 | 2006-08-23 | 精工爱普生株式会社 | Light scanning device and image display apparatus |
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