CN103207508A - Liquid crystal projector - Google Patents
Liquid crystal projector Download PDFInfo
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- CN103207508A CN103207508A CN2012104576251A CN201210457625A CN103207508A CN 103207508 A CN103207508 A CN 103207508A CN 2012104576251 A CN2012104576251 A CN 2012104576251A CN 201210457625 A CN201210457625 A CN 201210457625A CN 103207508 A CN103207508 A CN 103207508A
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- liquid crystal
- polarizer
- light
- crystal module
- light source
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Abstract
The invention provides a liquid crystal projector which comprises an LED (light emitting diode) backlight light source, a fly-eye lens, a first polarizing plate, a liquid crystal module, a second polarizing plate and a projection lens. Light from the LED backlight light source penetrates through the fly-eye lens, the first polarizing plate, the liquid crystal module and the second polarizing plate sequentially to project an image out through the projection lens; a gap is respectively reserved between the liquid crystal module and the first polarizing plate as well as between the liquid crystal module and the second polarizing plate, the first polarizing plate comprises a first glass base plate and a first polarizing film which is arranged on the surface of the first glass base plate in a plating mode, and the second polarizing plate comprises a second glass base plate and a second polarizing film which is arranged on the surface of the second glass base plate in a plating mode. According to the liquid crystal projector, the low-cost LED backlight light source serves as a projecting light source, the polarizing plates are formed by plating the polarizing films on the glass base plates and are arranged with the liquid crystal module at intervals, so that the heat dissipating efficiency of the polarizing films and the liquid crystal module can be greatly improved. The liquid crystal projector has the advantages of low cost, miniaturization and heat-dissipating convenience.
Description
Technical field
The present invention relates to the shadow casting technique field, particularly relate to a kind of liquid crystal projector.
Background technology
At present, projector is widely used in family, office, school and public place of entertainment, according to the working method difference, CRT is arranged, LCD, and DLP etc. are dissimilar.The CRT technology maturation, the image color of demonstration is abundant, and is Well-recovered, have abundant geometric distortion adjustment capability, but the projector operation complexity, and it is loaded down with trivial details particularly to assemble adjustment, body volume is big, only is fit to be installed on that surround lighting is weak, relatively-stationary place, should not move.The DLP projector can be regarded the simple light path system that has only a light source and one group of projection lens composition as, but its employed dmd chip is expensive, has limited the application popularization of this projector.And many-sided advantage such as the LCD liquid crystal projection apparatus has that color is good, price advantage and brightness uniformity are good, but if will realize further that it is simple in structure, high brightness and miniaturization, the design of light path and heat radiation also needs further innovation.
Therefore, for satisfying the user to the demand of low cost, high brightness, miniaturization hand-held projector, be necessary to provide a kind of small-sized liquid crystal projector to solve the problems of the technologies described above.
Summary of the invention
The invention provides a kind of liquid crystal projector, utilize the LED-backlit light source as projection light source, arrange at interval by liquid crystal module part and first Polarizer and second Polarizer, make the characteristics that liquid crystal projector provided by the invention has low cost, miniaturization and is convenient to dispel the heat.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: a kind of liquid crystal projector is provided, comprises:
LED-backlit light source, fly's-eye lens, first Polarizer, liquid crystal module part, second Polarizer and projection lens are gone out image projection by projection lens through fly's-eye lens, first Polarizer, liquid crystal module part and second Polarizer successively from the light of LED-backlit light source;
Wherein, described fly's-eye lens is used for the light that the LED-backlit light source produces is spared light, described liquid crystal module part and first Polarizer arrange at interval, described liquid crystal module part and second Polarizer arrange at interval, and described first Polarizer comprises first glass substrate and plates first light polarizing film of being located on first glass baseplate surface, described second Polarizer comprises that second glass substrate and plating are located at second light polarizing film on second glass baseplate surface, and the direction of shaking thoroughly of first light polarizing film and second light polarizing film is vertical mutually.
Wherein, described LED-backlit light source comprises the plurality of LEDs lamp.
Wherein, described liquid crystal film assembly comprises along the TFT substrate, liquid crystal layer, the filter substrate that set gradually on the direction of propagation of light, the TFT real estate is to first Polarizer, and filter substrate is towards second Polarizer, and liquid crystal layer is between TFT substrate and filter substrate.
Wherein, described liquid crystal projector further comprises the air blast assembly, and described air blast assembly is used for that air blast enters in the interval between first Polarizer and the liquid crystal module assembly and enters in the interval between second Polarizer and the liquid crystal module part for air blast.
Wherein, described projection lens comprises square projection lens.
A kind of liquid crystal projector provided by the invention, utilize cheaply the LED-backlit light source as projection light source, form Polarizer on the glass substrate and Polarizer and liquid crystal module part are arranged at interval by light polarizing film plating is located at, can increase substantially the radiating efficiency of light polarizing film and liquid crystal module part, prevent that light polarizing film from crossing cause thermal damage, the characteristics that have low cost, miniaturization and be convenient to dispel the heat.
Description of drawings
Fig. 1 is the structural representation of an embodiment of liquid crystal projector of the present invention.
Embodiment
See also Fig. 1, Fig. 1 is the structural representation of an embodiment of liquid crystal projector of the present invention.As shown in Figure 1, the liquid crystal projector of present embodiment comprises: LED-backlit light source 11, fly's-eye lens 12, first Polarizer 13, liquid crystal module part 14, second Polarizer 15 and projection lens 16, light from LED-backlit light source 11 sees through fly's-eye lens 12 successively, first Polarizer 13, liquid crystal module part 14 and second Polarizer 15 are gone out image projection by projection lens 16, wherein, fly's-eye lens 12 is used for the white light that LED-backlit light source 11 produces is spared light, liquid crystal module part 14 and first Polarizer 13 arrange at interval, liquid crystal module part 14 and second Polarizer 15 arrange at interval, and first Polarizer 13 comprises first glass substrate and plates first light polarizing film of being located on first glass baseplate surface, second Polarizer 15 comprises that second glass substrate and plating are located at second light polarizing film on second glass baseplate surface, and the direction of shaking thoroughly of first light polarizing film and second light polarizing film is vertical mutually.
In an embodiment of the present invention, LED-backlit light source 11 comprises plurality of LEDs lamp 111, and this plurality of LEDs lamp 111 preferably is evenly distributed on the fixture (not indicating) towards fly's-eye lens 12.The white light that this plurality of LEDs lamp 111 produces incides on the fly's-eye lens 12, and the light of outgoing is uniform white light behind fly's-eye lens 12 even light.
Wherein, via the uniform white light of the fly's-eye lens 12 outgoing light valve by being formed by first Polarizer 13, liquid crystal module part 14 and second Polarizer 15 successively.After white light incides on first Polarizer 13, have only along first polarized light of the direction polarization that shakes thoroughly of first light polarizing film to see through first Polarizer 13.First polarized light sees through liquid crystal module part 14 subsequently.Incide subsequently on second Polarizer 15 from the polarized light of liquid crystal module part 14 outgoing.Because it is vertical mutually with the direction of shaking thoroughly that plating is located at second light polarizing film on second Polarizer 15 to plate the direction of shaking thoroughly of first light polarizing film that is located at first Polarizer 13, therefore, vertical mutually with the polarization direction from second polarized light of the second Polarizer outgoing from first polarized light of first Polarizer, 13 outgoing, the polarized light of winning is had only revolve to turn 90 degrees through the effect polarization direction of liquid crystal module part 14 to see through second Polarizer 15 fully.
Wherein, liquid crystal module part 14 is used for the polarization direction that the polarized light on second Polarizer 15 is incided in control.The part light that the direction of shaking thoroughly from the polarized light of liquid crystal module part 14 outgoing is consistent with the direction of shaking thoroughly of second Polarizer 15 sees through second Polarizer fully, shows as high light tone.The orthogonal partial polarization light of the direction of shaking thoroughly of shake thoroughly direction and second Polarizer 15 from the polarized light of liquid crystal module part 14 outgoing will be stopped fully by second Polarizer 15, and then show as dead color.Therefore, the size that is added in the electric field on the liquid crystal in the liquid crystal module part 14 by control is controlled the anglec of rotation through the polarization direction of the polarized light of liquid crystal, can realize GTG brightness in various degree.
In an embodiment of the present invention, liquid crystal film assembly 14 comprises along the TFT substrate, liquid crystal layer, the filter substrate that set gradually on the direction of propagation of white light, the TFT real estate is to first Polarizer 13, and filter substrate is towards second Polarizer 15, and liquid crystal layer is between TFT substrate and filter substrate.Particularly, the TFT substrate comprises: transparent substrates is placed with tft array on it; Pixel electrode, each pixel electrode is corresponding to a TFT; Driving circuit is used for the drive TFT array.Filter substrate comprises: transparent substrates is placed with reverse electrode on it.Wherein, the surface that is formed with the surface of TFT substrate of each electrode and filter substrate on it toward each other.
In an embodiment of the present invention, light incides the heat that produces on first light polarizing film and can spread out by first glass substrate, the highest light intensity of bearing of the light polarizing film of winning is improved, and light incides the heat that causes on second light polarizing film and can spread out by second glass substrate, make the highest light intensity of bearing of second light polarizing film be improved, simultaneously since first Polarizer and second Polarizer and liquid crystal module part arrange at interval, can reduce first light polarizing film and second light polarizing film and be delivered to heat on the liquid crystal module part, and then prevent that liquid crystal module part 14 is overheated and impaired, can improve the radiating efficiency of liquid crystal projector of the present invention.
Further, in an embodiment of the present invention, liquid crystal projector further comprises air blast assembly (not shown), the air blast assembly is used for that air blast enters in the interval between first Polarizer 13 and the liquid crystal module part 14 and enters in the interval between second Polarizer 15 and the liquid crystal module part 14 for air blast, so improve a circulation of interior air at interval between first Polarizer 13, liquid crystal module part and second Polarizer, can further improve the radiating efficiency of liquid crystal projector of the present invention.The measure of above-mentioned raising radiating efficiency, the brightness that makes liquid crystal projector of the present invention can increase the LED-backlit light source are carried out high-brightness projection and are shown.
In addition, liquid crystal projector of the present invention is to satisfy different application needs, and projection lens 16 comprises square projection lens, can certainly be designed to the projection lens of other structure as required, and the present invention does not limit this.In addition, between LED-backlit light source 11 and fly's-eye lens 12, can increase condenser, so that the white light of LED-backlit light source 11 outgoing incides on the fly's-eye lens 12 after condenser optically focused.
A kind of liquid crystal projector provided by the invention, utilize cheaply the LED-backlit light source as projection light source, form Polarizer on the glass substrate and Polarizer and liquid crystal module part are arranged at interval by light polarizing film plating is located at, can increase substantially the radiating efficiency of light polarizing film and liquid crystal module part, prevent that light polarizing film from crossing cause thermal damage, liquid crystal projector of the present invention is simple in structure, the characteristics that have low cost, miniaturization and be convenient to dispel the heat.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (5)
1. a liquid crystal projector is characterized in that, described liquid crystal projector comprises:
LED-backlit light source, fly's-eye lens, first Polarizer, liquid crystal module part, second Polarizer and projection lens are gone out image projection by projection lens through fly's-eye lens, first Polarizer, liquid crystal module part and second Polarizer successively from the light of LED-backlit light source;
Wherein, described fly's-eye lens is used for the white light that the LED-backlit light source produces is spared light, described liquid crystal module part and first Polarizer arrange at interval, described liquid crystal module part and second Polarizer arrange at interval, and described first Polarizer comprises first glass substrate and plates first light polarizing film of being located on first glass baseplate surface, described second Polarizer comprises that second glass substrate and plating are located at second light polarizing film on second glass baseplate surface, and the direction of shaking thoroughly of first light polarizing film and second light polarizing film is vertical mutually.
2. liquid crystal projector according to claim 1 is characterized in that, described LED-backlit light source comprises the plurality of LEDs lamp.
3. liquid crystal projector according to claim 1, it is characterized in that, described liquid crystal film assembly comprises along the TFT substrate, liquid crystal layer, the filter substrate that set gradually on the direction of propagation of light, the TFT real estate is to first Polarizer, filter substrate is towards second Polarizer, and liquid crystal layer is between TFT substrate and filter substrate.
4. liquid crystal projector according to claim 1, it is characterized in that, described liquid crystal projector further comprises the air blast assembly, and described air blast assembly is used for that air blast enters in the interval between first Polarizer and the liquid crystal module assembly and enters in the interval between second Polarizer and the liquid crystal module part for air blast.
5. liquid crystal projector according to claim 1 is characterized in that, described projection lens comprises square projection lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104576251A CN103207508A (en) | 2012-11-14 | 2012-11-14 | Liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104576251A CN103207508A (en) | 2012-11-14 | 2012-11-14 | Liquid crystal projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103207508A true CN103207508A (en) | 2013-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104576251A Pending CN103207508A (en) | 2012-11-14 | 2012-11-14 | Liquid crystal projector |
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| CN (1) | CN103207508A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324431A (en) * | 2017-08-01 | 2019-02-12 | 威斯通全球技术公司 | Thin Film Transistor-LCD with air flow system |
| CN110174809A (en) * | 2019-05-22 | 2019-08-27 | 长沙创荣电子科技有限公司 | A kind of one chip LCD projector |
| CN110928118A (en) * | 2018-09-19 | 2020-03-27 | 青岛海信激光显示股份有限公司 | Laser array, laser light source and laser projection equipment |
| US11467477B2 (en) | 2018-09-19 | 2022-10-11 | Hisense Laser Display Co., Ltd. | Laser array, laser source and laser projection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363052A (en) * | 2000-01-28 | 2002-08-07 | 精工爱普生株式会社 | Optical reflection polarizer and projector comprising same |
| CN101206387A (en) * | 2006-12-18 | 2008-06-25 | 财团法人工业技术研究院 | High efficiency liquid crystal display projection system |
| CN101634754A (en) * | 2008-07-25 | 2010-01-27 | 成都欧恒光电科技有限公司 | LCD projection optical engine adopting LED light source and projection device thereof |
| CN101989031A (en) * | 2009-07-30 | 2011-03-23 | 精工爱普生株式会社 | Projector |
| CN102004318A (en) * | 2009-09-01 | 2011-04-06 | 精工爱普生株式会社 | Display device, electronic apparatus, and projection imaging apparatus |
| CN203117629U (en) * | 2012-11-14 | 2013-08-07 | 深圳市亿思达显示科技有限公司 | Liquid crystal projector |
-
2012
- 2012-11-14 CN CN2012104576251A patent/CN103207508A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1363052A (en) * | 2000-01-28 | 2002-08-07 | 精工爱普生株式会社 | Optical reflection polarizer and projector comprising same |
| CN101206387A (en) * | 2006-12-18 | 2008-06-25 | 财团法人工业技术研究院 | High efficiency liquid crystal display projection system |
| CN101634754A (en) * | 2008-07-25 | 2010-01-27 | 成都欧恒光电科技有限公司 | LCD projection optical engine adopting LED light source and projection device thereof |
| CN101989031A (en) * | 2009-07-30 | 2011-03-23 | 精工爱普生株式会社 | Projector |
| CN102004318A (en) * | 2009-09-01 | 2011-04-06 | 精工爱普生株式会社 | Display device, electronic apparatus, and projection imaging apparatus |
| CN203117629U (en) * | 2012-11-14 | 2013-08-07 | 深圳市亿思达显示科技有限公司 | Liquid crystal projector |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109324431A (en) * | 2017-08-01 | 2019-02-12 | 威斯通全球技术公司 | Thin Film Transistor-LCD with air flow system |
| CN110928118A (en) * | 2018-09-19 | 2020-03-27 | 青岛海信激光显示股份有限公司 | Laser array, laser light source and laser projection equipment |
| CN110928118B (en) * | 2018-09-19 | 2022-05-10 | 青岛海信激光显示股份有限公司 | Laser array, laser light source and laser projection equipment |
| US11467477B2 (en) | 2018-09-19 | 2022-10-11 | Hisense Laser Display Co., Ltd. | Laser array, laser source and laser projection device |
| CN110174809A (en) * | 2019-05-22 | 2019-08-27 | 长沙创荣电子科技有限公司 | A kind of one chip LCD projector |
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| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Applicant after: SHENZHEN ESTAR DISPLAYTECH CO., LTD. Address before: 518000, District, Shenzhen, Nanshan District high tech Zone, Southern District, B1 digital technology park, building 2, C Applicant before: Shenzhen Esta Display Technology Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHENZHEN ESTA DISPLAY TECHNOLOGY CO., LTD. TO: SHENZHEN YISIDA TECHNOLOGYGROUP CO., LTD. |
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Application publication date: 20130717 |