CN101211095A - Projection display device - Google Patents
Projection display device Download PDFInfo
- Publication number
- CN101211095A CN101211095A CNA2006100646419A CN200610064641A CN101211095A CN 101211095 A CN101211095 A CN 101211095A CN A2006100646419 A CNA2006100646419 A CN A2006100646419A CN 200610064641 A CN200610064641 A CN 200610064641A CN 101211095 A CN101211095 A CN 101211095A
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- light
- light source
- liquid crystal
- projection display
- crystal panel
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- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
The invention relates to a projection display device, which comprises a light source module and a liquid crystal panel. The light source module comprises a rotating multi-surface structure and a light source, wherein the rotating multi-surface structure comprises multiple surfaces around a central axis, the number of the multiple surfaces is multiple of three, every three surfaces are one unit and are respectively provided with a red filter, a green filter and a blue filter. The light source is positioned at the central axis of the multi-surface structure. When the rotating multi-surface structure rotates around the central axis, light beams which are emitted by the light source respectively form red light, green light and blue light after being filtrated by the red filter, the green filter and the blue filter, then the lights are sequentially projected to the liquid crystal panel which converts the red light, the green light and the blue light respectively to an image with a certain single-color gray-scale according to image signals, and the image is output via an image amplification device.
Description
Technical field
The present invention relates to a kind of projection display equipment.
Background technology
The liquid crystal rear-projection is the product that lcd technology and shadow casting technique combine, it has utilized the photoelectric effect of liquid crystal, control the yawing moment of liquid crystal molecule by the voltage swing that is added in the liquid crystal cells two ends, thereby control light is by the transmitance of liquid crystal cells, to produce the image of different GTGs and color.The three-chip type liquid crystal panel is adopted in general liquid crystal rear-projection, and three liquid crystal panels are respectively as the key-course of red, green, blue three coloured light.Promptly the white light that is penetrated by light source is after colour splitting system, it is isolated red, green, blue three coloured light, the light of these three kinds of colors is when the liquid crystal panel that sees through separately, utilize the photoelectric effect of liquid crystal, be that being arranged under the electric field action of liquid crystal molecule changes, influence the transmittance or the reflectivity of its liquid crystal cells, thereby influence its optical property, generation has the image of different GTGs and color, in light-combining prism, condense together then, to projection screen, form the lively full-color image of a width of cloth by projection lens projects.
Seeing also Fig. 1, is a kind of schematic perspective view of prior art projection display equipment.This projection display equipment 1 comprises light source 11, colour splitting system (not indicating), three liquid crystal panels 13, light-combining prism 14 and projection lens 15.The white light that this light source 11 emits converges to dichroic mirror group 125 through the catoptron 122 and the condenser 124 of colour splitting system, and cooperate catoptron 122 and condenser 124 that white light is isolated red, green, blue three coloured light, these red, green, blue three coloured light project on the corresponding liquid crystal panel 13, three coloured light produce the image of different GTGs and color respectively by corresponding liquid crystal panel 13 backs, in light-combining prism 14, condense together then, project by projection lens 15 and form the lively full-color image of a width of cloth on the display screen.
Yet the light path complexity of above-mentioned projection display equipment 1 also will be used comparatively complicated optical system, makes cost quite high, also comparatively takes up room, and volume is bigger.
Summary of the invention
In order to solve the high and bulky problem of prior art projection display equipment cost, be necessary to provide the projection display equipment that a kind of cost is lower and volume is little.
A kind of projection display equipment, it comprises a light source module and a liquid crystal panel, this light source module comprises a rotating multisurface structure and a light source, this rotating multisurface structure has around a plurality of of central shaft, and this number of a plurality of is three multiple, and per three faces are a unit, one side is provided with Red lightscreening plate, one side is provided with green color filter, and one side is provided with blue color filter, and this light source is positioned at the central axis of multi-plane structure.Described rotating multisurface structure is when central shaft rotates, ruddiness, green glow, blue light that the light beam that light source penetrates forms after filtering via Red lightscreening plate, green color filter, blue color filter respectively are projected to liquid crystal panel successively, this liquid crystal panel converts ruddiness, green glow, blue light the image of the certain monochromatic GTG of tool to respectively according to image signal, and it is utilized image amplifying device output.
A kind of projection display equipment, it comprises a light source module and a liquid crystal panel, this light source module comprises a rotating multisurface structure, this rotating multisurface structure has around a plurality of of central shaft, this number of a plurality of is three multiple, and per three faces are a unit, on the one side a plurality of red light-emitting diodes is set, on the one side a plurality of green light LEDs are set, on the one side a plurality of blue light-emitting diodes are set.Described rotating multisurface structure is when central shaft rotates, the light beam that this red light-emitting diode, green light LED, blue light-emitting diode penetrate is projected to liquid crystal panel successively, this liquid crystal panel converts ruddiness, green glow, blue light the image of the certain monochromatic GTG of tool to respectively according to image signal, and it is utilized image amplifying device output.
Compared with prior art, the light source module of this projection display equipment adopts the rotating multisurface structure, and its light path is simple, can reduce optical module, saves cost, and the volume of corresponding minimizing projection display equipment, saves the space.
Description of drawings
Fig. 1 is a kind of schematic perspective view of prior art projection display equipment.
Fig. 2 is the schematic perspective view of projection display equipment first embodiment of the present invention.
Fig. 3 is the schematic perspective view of the light source module of projection display equipment second embodiment of the present invention.
Embodiment
Seeing also Fig. 2, is the schematic perspective view of projection display equipment first embodiment of the present invention.This projection display equipment 2 comprises a light source module 21, a liquid crystal panel 23, an image amplifying device 25 and a display screen (figure does not show).This liquid crystal panel 23 is converted to the image with certain monochromatic GTG by one drive circuit control in order to the homogeneous beam that will throw on it.
This light source module 20 comprises a rotating multisurface structure 210, a light source 212 and a reflex housing 214, this rotating multisurface structure 210 has around a plurality of of central shaft, this number of a plurality of is three multiple, per three faces are a unit, one side is provided with Red lightscreening plate, one side is provided with green color filter, one side is provided with blue color filter, this light source 212 is positioned at the central axis of rotating multisurface structure 210, these reflex housing 214 contiguous these light sources 212 are provided with, and the light that light source 212 sends is concentrated face of directive.This rotating multisurface structure 210 is electrically connected on a CD-ROM drive motor (figure does not show), to control the rotational speed of this rotating multisurface structure 210, contiguous light source 212 1 sides are connected with a fan 215, be used for heat radiation, when these rotating multisurface structure 210 rotations, this fan 215 also rotates, and the hot gas that light source 212 produces is discharged.This light source 212 is high brightness, highdensity bar shaped xenon lamp (High Intensity Discharge, HID lamp).This rotating multisurface structure 210 is around self central shaft rotation, and the white light that light source 212 is sent throws to liquid crystal panel 23 after filtering successively through Red lightscreening plate, green color filter, blue color filter respectively.
This liquid crystal panel 23 can be selected 0.7 to 2.2 penetration liquid crystal panel, and it does not need to have chromatic filter layer, can save liquid crystal panel 23 costs, and its reaction time is 5 * 10
-3Below second.This image amplifying device 25 is aspheric surface convex lens, and this liquid crystal panel 23 places on these image amplifying device 25 object distances and to one side setting that should rotating multisurface structure 210.Described rotating multisurface structure 210 is when central shaft rotates, the light beam that this light source 212 penetrates is respectively via Red lightscreening plate, green color filter, the ruddiness that forms after blue color filter filters, green glow, blue light is projected to liquid crystal panel 23 successively, this liquid crystal panel 23 by driving circuit control according to the image signal of driving circuit with ruddiness, green glow, blue light converts the image of the certain monochromatic GTG of tool respectively to, and be projected to display screen via image amplifying device 25, image is amplified to required size, by the persistence of vision of human eye, the trichromatic monochromatic grey-tone image of flicker is continuously formed the image of full color.
The eye storage characteristic of human eye, discontinuous pattern more than per second 30 width of cloth can be considered as continuously, but consider that best frequency is that the above picture of per second 60 width of cloth just is unlikely and feels flicker, promptly at 1/60 second with interior demonstration one full-color picture, this full-color picture is made up of the monochromatic grey-tone image of red green blue tricolor, so the demonstration time of each monochromatic grey-tone image is below 1/180 second.
Compared with prior art, this light source module 20 adopts rotating multisurface structure 210, and light source 212 is arranged in the rotating multisurface structure 210, and its light path is simple, can reduce optical module, saves cost, and the volume of corresponding minimizing projection display equipment 2, saves the space.
Seeing also Fig. 3, is the schematic perspective view of the light source module of projection display equipment second embodiment of the present invention.This light source module 30 is similar to the light source module 20 of first embodiment, its difference is: per three faces of the rotating multisurface structure 310 of this light source module 30 are a unit, on the one side a plurality of red light-emitting diodes are set, on the one side a plurality of green light LEDs are set, on the one side a plurality of blue light-emitting diodes are set.Described rotating multisurface structure 310 is rotated around central shaft, and the light emitting diode of these three kinds of colors is alternately luminous, promptly when this multiaspect rotational structure 310 goes to the side relative with liquid crystal panel, and the lumination of light emitting diode that is provided with on this face.Above-mentioned light emitting diode of all kinds all is the high light sources of light intensity directive property, and the light of its emission is concentrated and pointed in the predetermined angle in its place ahead, is the angle of divergence of emergent ray, selects the light emitting diode of the angle of divergence less than 30 degree for use for improving the light source utilization factor.The excitation of light emitting diode is high, and the colors of image scope that demonstrates is also comparatively broad.
Yet it is described that this projection display equipment is not limited to above-mentioned embodiment, and for example: this image amplifying device is a lens combination, and it can be amplified to required size with image and get final product.
Claims (10)
1. projection display equipment, it comprises a light source module and a liquid crystal panel, it is characterized in that: this light source module comprises a rotating multisurface structure and a light source, this rotating multisurface structure has around a plurality of of central shaft, this number of a plurality of is three multiple, per three faces are a unit, one side is provided with Red lightscreening plate, one side is provided with green color filter, one side is provided with blue color filter, this light source is positioned at the central axis of multi-plane structure, described rotating multisurface structure is when central shaft rotates, the light beam that light source penetrates is respectively via Red lightscreening plate, green color filter, the ruddiness that forms after blue color filter filters, green glow, blue light is projected to liquid crystal panel successively, this liquid crystal panel according to image signal with ruddiness, green glow, blue light converts the image of the certain monochromatic GTG of tool respectively to, and it is exported by image amplifying device.
2. projection display equipment as claimed in claim 1 is characterized in that: this light source module further comprises a reflex housing, and contiguous this light source of this reflex housing is provided with the face that the light that light source is sent is concentrated this rotating multisurface structure of directive.
3. projection display equipment as claimed in claim 1 is characterized in that: this light source module further comprises the fan that a contiguous light source is provided with, and discharges in order to the heat that light source is sent.
4. projection display equipment as claimed in claim 1 is characterized in that: this light source module further comprises the CD-ROM drive motor of this multiaspect rotational structure rotating speed of control.
5. projection display equipment as claimed in claim 1 is characterized in that: this image amplifying device is aspheric surface convex lens or lens combination, and this liquid crystal panel is provided with on the object distance of image amplifying device.
6. projection display equipment as claimed in claim 1 is characterized in that: this liquid crystal panel is the penetration liquid crystal panel.
7. projection display equipment as claimed in claim 1 is characterized in that: this projection display equipment further comprises a display screen, via the image projecting of figure multiplying arrangement output to display screen.
8. projection display equipment as claimed in claim 1, it is characterized in that: this projection display equipment further comprises one drive circuit, and this liquid crystal panel controls and according to the image signal of driving circuit ruddiness, green glow, blue light are converted to respectively the image of the certain monochromatic GTG of tool by driving circuit.
9. projection display equipment, it comprises a light source module and a liquid crystal panel, it is characterized in that: this rotating multisurface structure has around a plurality of of central shaft, this number of a plurality of is three multiple, per three faces are a unit, on the one side a plurality of red light-emitting diodes are set, on the one side a plurality of green light LEDs are set, on the one side a plurality of blue light-emitting diodes are set, described rotating multisurface structure is when central shaft rotates, this red light-emitting diode, green light LED, the light beam that blue light-emitting diode penetrates is projected to liquid crystal panel successively, this liquid crystal panel according to image signal with ruddiness, green glow, blue light converts the image of the certain monochromatic GTG of tool respectively to, and it is utilized image amplifying device output.
10. projection display equipment as claimed in claim 9 is characterized in that: the angle of divergence of this light emitting diode is less than 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610064641A CN101211095B (en) | 2006-12-29 | 2006-12-29 | Projection display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610064641A CN101211095B (en) | 2006-12-29 | 2006-12-29 | Projection display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101211095A true CN101211095A (en) | 2008-07-02 |
| CN101211095B CN101211095B (en) | 2010-05-12 |
Family
ID=39611213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610064641A Expired - Fee Related CN101211095B (en) | 2006-12-29 | 2006-12-29 | Projection display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101211095B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468399A (en) * | 2010-11-12 | 2012-05-23 | 纬创资通股份有限公司 | Light-emitting device, and using method thereof |
| CN107153321A (en) * | 2017-07-25 | 2017-09-12 | 新乡医学院 | A kind of LCD projector of long-time high stable |
| CN107153320A (en) * | 2017-07-25 | 2017-09-12 | 新乡医学院 | A kind of LCD projector of high-contrast |
| CN108604049A (en) * | 2016-02-05 | 2018-09-28 | 麦克赛尔株式会社 | projection-type image display device |
| CN110275377A (en) * | 2018-03-16 | 2019-09-24 | 京东方科技集团股份有限公司 | A kind of projection device and its display methods |
| CN114280879A (en) * | 2022-01-05 | 2022-04-05 | 京东方科技集团股份有限公司 | Projection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4979026A (en) * | 1989-03-07 | 1990-12-18 | Lang Paul W | Polarized light 360 degree viewing system |
| US6072545A (en) * | 1998-01-07 | 2000-06-06 | Gribschaw; Franklin C. | Video image rotating apparatus |
| WO1999039515A1 (en) * | 1998-01-29 | 1999-08-05 | Thomson Licensing S.A. | Direct projection television with three dimensional holographic screen |
| US6266105B1 (en) * | 1998-07-31 | 2001-07-24 | Philips Electornics North America Corporation | Color projection system incorporation electro-optic light modulator and rotating light-reflective element |
| CN1198165C (en) * | 2001-07-14 | 2005-04-20 | 邱新萍 | Colour display using luminous wheel |
| CN1488986A (en) * | 2002-10-11 | 2004-04-14 | 中强光电股份有限公司 | Multi-layer optical filtering device |
-
2006
- 2006-12-29 CN CN200610064641A patent/CN101211095B/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468399A (en) * | 2010-11-12 | 2012-05-23 | 纬创资通股份有限公司 | Light-emitting device, and using method thereof |
| CN108604049A (en) * | 2016-02-05 | 2018-09-28 | 麦克赛尔株式会社 | projection-type image display device |
| CN108604049B (en) * | 2016-02-05 | 2020-09-04 | 麦克赛尔株式会社 | Projection type image display device |
| CN107153321A (en) * | 2017-07-25 | 2017-09-12 | 新乡医学院 | A kind of LCD projector of long-time high stable |
| CN107153320A (en) * | 2017-07-25 | 2017-09-12 | 新乡医学院 | A kind of LCD projector of high-contrast |
| CN107153320B (en) * | 2017-07-25 | 2019-09-24 | 新乡医学院 | A kind of LCD projector of high contrast |
| CN110275377A (en) * | 2018-03-16 | 2019-09-24 | 京东方科技集团股份有限公司 | A kind of projection device and its display methods |
| CN110275377B (en) * | 2018-03-16 | 2021-08-13 | 京东方科技集团股份有限公司 | Projection equipment and display method thereof |
| CN114280879A (en) * | 2022-01-05 | 2022-04-05 | 京东方科技集团股份有限公司 | Projection device |
| CN114280879B (en) * | 2022-01-05 | 2024-04-16 | 京东方科技集团股份有限公司 | Projection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101211095B (en) | 2010-05-12 |
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Granted publication date: 20100512 Termination date: 20191229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |