CN203117630U - Liquid crystal projector - Google Patents
Liquid crystal projector Download PDFInfo
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- CN203117630U CN203117630U CN 201220600715 CN201220600715U CN203117630U CN 203117630 U CN203117630 U CN 203117630U CN 201220600715 CN201220600715 CN 201220600715 CN 201220600715 U CN201220600715 U CN 201220600715U CN 203117630 U CN203117630 U CN 203117630U
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- liquid crystal
- polarizing film
- light
- light source
- crystal module
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Abstract
The utility model provides a liquid crystal projector. The projector comprises a LED backlight light source, a fly eye lens, a liquid crystal module assembly and a projection lens. The LED backlight light source comprises a plurality of LED lamps which are uniformly distributed. Light which is from the LED backlight light source successively passes through the fly eye lens and the liquid crystal module assembly and then an image is projected through the projection lens. The fly eye lens is used to carry out dodging on white light generated by the LED backlight light source. A first polarizing film is arranged on an incident plane of the liquid crystal module assembly. A second polarizing film is arranged on an emergent surface of the liquid crystal module assembly. Transmission vibration directions of the first polarizing film and the second polarizing film are mutually vertical to each other. According to the utility model, the LED backlight light source which is with low cost and comprises the plurality of LED lamps uniformly distributed is served as a projection light source. The fly eye lens is used to carry out the dodging on the white light emitted by the LED backlight light source and then the light is directly incident to the liquid crystal module assembly. The liquid crystal projector of the utility model possesses the characteristics that the cost is low; the structure is simple and the size is small.
Description
Technical field
The utility model relates to the shadow casting technique field, particularly relates 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 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.
The utility model content
The utility model 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, the liquid crystal projector that makes the utility model provide has low cost, miniaturization and characteristic of simple structure.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of liquid crystal projector is provided, comprises:
LED-backlit light source, fly's-eye lens, liquid crystal module part and projection lens, described LED-backlit light source comprises a plurality of equally distributed LED lamps, image projection is gone out by projection lens through fly's-eye lens and liquid crystal module part 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, the plane of incidence of described liquid crystal module part is provided with first light polarizing film, the exit facet of described liquid crystal module part is provided with second light polarizing film, and the direction of shaking thoroughly of described first light polarizing film and second light polarizing film is vertical mutually.
Wherein, described liquid crystal module part comprises along the TFT substrate, liquid crystal layer, the filter substrate that set gradually on the direction of propagation of light, the plane of incidence of TFT substrate is provided with described first light polarizing film, the exit facet of filter substrate face is provided with second light polarizing film, and liquid crystal layer is between TFT substrate and filter substrate.
Wherein, described projection lens comprises square projection lens.
A kind of liquid crystal projector that the utility model provides, utilize cheaply the LED-backlit light source as projection light source, be directly incident on the liquid crystal module after utilizing fly's-eye lens that the white light of LED-backlit light source emission is spared light, make liquid crystal projector of the present utility model have the characteristics of low cost, simple in structure and miniaturization.
Description of drawings
Fig. 1 is the structural representation of an embodiment of liquid crystal projector of the present utility model.
Embodiment
See also Fig. 1, Fig. 1 is the structural representation of an embodiment of liquid crystal projector of the present utility model.As shown in Figure 1, the liquid crystal projector of present embodiment comprises: LED-backlit light source 11, fly's-eye lens 12, first light polarizing film 13, liquid crystal module part 14, second light polarizing film 15 and projection lens 16, light from LED-backlit light source 11 sees through fly's-eye lens 12 successively, first light polarizing film 13, liquid crystal module part 14 and second light polarizing film 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, LED-backlit light source 11 comprises many LED lamps 111 that are evenly distributed on the fixture (not indicating), 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.The plane of incidence of described liquid crystal module part 14 is provided with first light polarizing film 13, and the exit facet of described liquid crystal module part 14 is provided with second light polarizing film 15, and the direction of shaking thoroughly of described first light polarizing film 13 and second light polarizing film 15 is vertical mutually.
Wherein, via the uniform white light of the fly's-eye lens 12 outgoing light valve by being formed by first light polarizing film 13, liquid crystal module part 14 and second light polarizing film 15 successively.After white light incides on first light polarizing film 13, have only along first polarized light of the direction polarization that shakes thoroughly of first light polarizing film to see through first light polarizing film 13.First polarized light sees through liquid crystal module part 14 subsequently.Incide subsequently on second light polarizing film 15 from the polarized light of liquid crystal module part 14 outgoing.Because it is vertical mutually to plate the direction of shaking thoroughly of shake thoroughly direction and second light polarizing film 15 that are located at first light polarizing film 13, therefore, vertical mutually with the polarization direction from second polarized light of second light polarizing film, 15 outgoing from first polarized light of first light polarizing film, 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 light polarizing film 15 fully.
Wherein, liquid crystal module part 14 is used for the polarization direction that the polarized light on second light polarizing film 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 light polarizing film 15 sees through second light polarizing film 15 fully, shows as high light tone.The orthogonal partial polarization light of the direction of shaking thoroughly of shake thoroughly direction and second light polarizing film 15 from the polarized light of liquid crystal module part 14 outgoing will be stopped fully by second light polarizing film 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 module part 14 comprises along the TFT substrate, liquid crystal layer, the filter substrate that set gradually on the direction of propagation of white light, the plane of incidence of TFT substrate is provided with first light polarizing film 13, the exit facet of filter substrate is provided with second light polarizing film 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.
Further, in embodiment of the present utility model, the high-brightness projection demonstration is carried out in the brightness that can increase LED-backlit light source 11.In addition, liquid crystal projector of the present utility model is to satisfy different application needs, and projection lens 16 can comprise square projection lens, can certainly be designed to the projection lens of other structure as required, and the utility model 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 that the utility model provides, utilize cheaply the LED-backlit light source as projection light source, be directly incident on the liquid crystal module after utilizing fly's-eye lens that the white light of LED-backlit light source emission is spared light, make liquid crystal projector of the present utility model have the characteristics of low cost, simple in structure and miniaturization.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions 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 utility model.
Claims (3)
1. a liquid crystal projector is characterized in that, described liquid crystal projector comprises:
LED-backlit light source, fly's-eye lens, liquid crystal module part and projection lens, described LED-backlit light source comprises a plurality of equally distributed LED lamps, image projection is gone out by projection lens through fly's-eye lens and liquid crystal module part 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, the plane of incidence of described liquid crystal module part is provided with first light polarizing film, the exit facet of described liquid crystal module part is provided with second light polarizing film, and the direction of shaking thoroughly of described first light polarizing film and second light polarizing film is vertical mutually.
2. liquid crystal projector according to claim 1, it is characterized in that, described liquid crystal module part comprises along the TFT substrate, liquid crystal layer, the filter substrate that set gradually on the direction of propagation of light, the plane of incidence of TFT substrate is provided with described first light polarizing film, the exit facet of filter substrate face is provided with second light polarizing film, and liquid crystal layer is between TFT substrate and filter substrate.
3. 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 |
|---|---|---|---|
| CN 201220600715 CN203117630U (en) | 2012-11-14 | 2012-11-14 | Liquid crystal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220600715 CN203117630U (en) | 2012-11-14 | 2012-11-14 | Liquid crystal projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203117630U true CN203117630U (en) | 2013-08-07 |
Family
ID=48897960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220600715 Expired - Fee Related CN203117630U (en) | 2012-11-14 | 2012-11-14 | Liquid crystal projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203117630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728417A (en) * | 2017-11-10 | 2018-02-23 | 范永浩 | Crystal projection screen |
-
2012
- 2012-11-14 CN CN 201220600715 patent/CN203117630U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728417A (en) * | 2017-11-10 | 2018-02-23 | 范永浩 | Crystal projection screen |
| CN107728417B (en) * | 2017-11-10 | 2020-06-05 | 广州西岛电子科技有限公司 | Liquid crystal projection screen |
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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: SHENZHEN YISIDA TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: SHENZHEN ESTA DISPLAY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518000 Shenzhen, Nanshan District, China Hi Tech in the world, the world's 806 digital building, room three Patentee 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 Patentee before: Shenzhen Esta Display Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20191219 Address after: A1801, Skyworth building, No. 008, gaoxinnan 1st Road, high tech Zone, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Liuming Technology Co., Ltd Address before: 806, room three, global digital building, 518000 hi tech, Guangdong, Nanshan District, Shenzhen Patentee before: SHENZHEN ESTAR DISPLAYTECH CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20201114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |