CN1607456A - Projection display device with mask structure - Google Patents
Projection display device with mask structure Download PDFInfo
- Publication number
- CN1607456A CN1607456A CN 200310101092 CN200310101092A CN1607456A CN 1607456 A CN1607456 A CN 1607456A CN 200310101092 CN200310101092 CN 200310101092 CN 200310101092 A CN200310101092 A CN 200310101092A CN 1607456 A CN1607456 A CN 1607456A
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- mask structure
- projection display
- display equipment
- light
- mirror device
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- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 8
- 238000005286 illumination Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A projecting display device with a shade structure includes an illumination unit, a shade, a digital micro-lens device and a projecting lens, among which, the shade has a transparent base plate and a light shield zone is designed at the side of the base plate to form a light transmitting zone by printing or coating. When light beams provided by the illumination unit is projected onto the shade, the effective beams can pass through the transmission zone to the micro-lens array of the micro-lens device then the projecting lens presents the images on the screen, and part beams reflected and absorbed by the light shield zone will not project on the bared connection part of the micro-lens part.
Description
Technical field
The present invention is relevant projection display equipment, refers in particular to a kind of projection display equipment with mask structure.
Background technology
As shown in Figure 1, known digital light is handled (DLP, Digital Light Processing) projection display equipment 10, be to adopt reflective digital micro-mirror device 11 (DMD, DigitalMicromirror Device), by the illuminating bundle reflection that micro mirror array (Micromirror array) provides lighting unit 12, be presented on the screen 14 to form image through projection lens 13.
As shown in Figure 2, the digital micro-mirror device 11 that adopts (does not promptly have shade type light valve at present, Non-Aperture DMD), be in the envelope program, the electrical connections 112 (as: weld pad or bonding wire) around micro mirror array wafer 111 to be exposed out, to remove known expensive enclosure-type encapsulation (Hermetic package) mode of using from, the manufacturing cost of digital micro-mirror device 11 can significantly be reduced, so to be projeced into exposed weld pad or bonding wire regional 112 the time when the light beam that is projeced into digital micro-mirror device 11, can influence visual enjoyment and make screen 14 pictures produce spuious image with being shown in screen 14 after the beam reflection.Therefore, when not having shade type light valve applications in projection display equipment cheaply, the spuious image of existence has problems, and still remains the researchist to propose solution.
Summary of the invention
One object of the present invention provides a kind of projection display equipment with mask structure, by mask structure is set, avoids spuious image to produce and the raising image quality to stop the light beam that is projeced into electrical connections, to reach.
Another object of the present invention, provide a kind of projection display equipment with mask structure, utilization with the light shielded area of mask structure towards the digital micro-mirror device setting, but make non-efficient beam regular reflection enter projection lens to avoid folded light beam, and can more accurately cover non-efficient beam.
For achieving the above object, a kind of projection display equipment with mask structure of the present invention comprises lighting unit, mask structure, digital micro-mirror device and projection lens; Wherein mask structure has a transparency carrier, and the light shielded area is set to form a transmitance region in substrate side surfaces utilization printing or plated film mode, and digital micro-mirror device comprises the digital micro-mirror battle array and is exposed to its electrical connections on every side; When the light beam that provides when lighting unit is projeced into mask structure, wherein efficient beam can directly pass transmitance region to the micromirror array of micro-mirror device, the back is presented in screen by projection lens with image, and being subjected to the reflection and the absorption of light shielded area, segment beam stops, and can not be projeced into the exposed electrical connections of micro-mirror device, prevent that to reach spuious image is presented in screen; In addition, utilization with the light shielded area of mask structure towards the digital micro-mirror device setting, but make non-efficient beam regular reflection enter projection lens, and the light shielded area can press close to the imaging surface of digital micro-mirror device, so can more accurately cover non-efficient beam to avoid folded light beam.
Description of drawings
Fig. 1 is the synoptic diagram that the known digital light of expression is handled projection display equipment.
Fig. 2 is the outside drawing of the known no shade digital micro-mirror device of expression.
Fig. 3 is the projection display equipment figure that expression the present invention has mask structure.
Fig. 4 is the side view of expression first embodiment of the invention mask structure.
Fig. 5 is the side view of expression second embodiment of the invention mask structure.
Fig. 6 is the opposite side view of expression second embodiment of the invention mask structure.
Fig. 7 is the side view of expression third embodiment of the invention mask structure.
The drawing reference numeral explanation:
Light shielded area 224
Digital micro-mirror device 23
Electrically connect part 232
Mask structure 32
Transparency carrier 321
Side 322
Transmitance region 323
Light shielded area 324
Anti-reflecting layer 325
Through hole 422
Embodiment
Relevant the present invention is for achieving the above object, and technological means that is adopted and complementary work thereof are imitated, and now lift three preferred embodiments, and accompanying drawings are as follows:
First embodiment:
As shown in Figure 3, the projection display equipment 20 that the present invention has mask structure comprises a lighting unit 21, a mask structure 22, one no shade type digital micro-mirror device 23 (the no shade type light valve of example, Non-Aperture DMD), a total reflection prism 24, a projection lens 25 and a screen (figure does not show).
Wherein lighting unit 21 comprises provides light beam 2111 and light source 211, filtering structure 212, homogenising structure 213 etc.; Consult shown in Figure 4ly, mask structure 22 is to be arranged at lighting unit 21 rears, and presses close to the front end setting of digital micro-mirror device 23; Mask structure 22 comprises a transparency carrier 221, and in transparency carrier 221 back to digital micro-mirror device 23 side 222 is provided with a transmitance region 223 and is located at light shielded area 224 around it, transmitance region 223 is to pass through for efficient beam 2111A, and light shielded area 224 is in order to stop that non-efficient beam 2111B injects digital micro-mirror device 23 or projection lens 25, this transparency carrier 221 can be glass, light shielded area 224 is to form a light non-transmittable layers by printing or plated film mode, and light non-transmittable layers can be black ink, metal level or minute surface material; Do not comprise a micromirror array 231 and be exposed to its electrical connections 232 (as: weld pad or bonding wire) on every side and there is shade type digital micro-mirror device 23, micromirror array 231 is to be positioned at transmitance region 223 rears, electrical connections is to be positioned at 224 rears, light shielded area, and transmitance region 223 suitably is set according to micromirror array 231 areas, so that the light beam (being efficient beam 2111A) that is passed by transmitance region 223 can be projeced on the micromirror array 231 fully, and light shielded area 224 can stop the light beam (and non-efficient beam 2111B) that is projeced into electrical connections 232 fully.
When light beam 2111 that lighting unit 21 provides filters by filtering structure 212, homogenising structure 213 and after homogenising etc. handles, see through total reflection prism 24 and be projeced into mask structure 22, wherein segment beam 2111A is passed through by the transmitance region 223 of mask structure 22 sides 222, be incident in micromirror array 231 zones on the digital micro-mirror device 23 at its rear, pass through mask structure 22, total reflection prism 24 again after the reflection of wherethrough reason, by by projection lens 25 image being presented in screen (figure does not show) at last; And all the other are projeced into the light beam of light shielded area 224, the reflection and the absorption that are subjected to light shielded area 224 stop, and confine optical beam is projeced into electrical connections 232 zones on the digital micro-mirror device 23, therefore, can stop the light beam that is projeced into electrical connections 232 by mask structure 22, be presented on the screen (figure does not show) to avoid light beam to produce spuious image by electrical connections 232 reflections.
In addition, it in the present embodiment projection display system 20 of mask structure 22 being located at an employing total reflection prism 24, make incident and reflect, can see through mask structure 22 and carry out stopping for twice non-effective light, produce effectively to stop spuious image in the light beam of micro-mirror device 23; But difference along with optical projection system, mask structure 22 also can be configured to effectively cover non-efficient beam as difference, for example: when adopting the non-oblique fire system (scheming not show) of catoptron, 22 of shade elements can be located on the input path of digital micro-mirror device 23 to stop that light beam is incident in electrical connections 232, perhaps are located on the reflected light path of digital micro-mirror device 23 to stop by being electrically connected regional 232 beam reflected.
Second embodiment:
The element that present embodiment is identical or suitable with above-mentioned first embodiment is to indicate same figure number, consult shown in Figure 5, and present embodiment and the foregoing description difference are: this mask structure 32 is to comprise a transparency carrier 321, and be provided with a transmitance region 323 in the face of the side 322 of digital micro-mirror device 23 and be located at light shielded area 324 around it in transparency carrier 321, so that the back side of light shielded area 324 forms reflecting surface, this transparency carrier 321 can be glass, light shielded area 324 is to form a light non-transmittable layers by printing or plated film mode, light non-transmittable layers can be black ink, metal level or minute surface material, by the side of light shielded area 324 being located in the face of digital micro-mirror device 23 322, make light shielded area 324 make the more accurate light beam that is projeced into electrical connections 232 that stops more near the plane of incidence (being imaging surface) of digital micro-mirror device 23.In addition, because the light shielded area is to be formed by coating or printing technology, therefore its surface can produce convex-concave surface along with processing procedure precision and thickness effect, when directly being incident in this convex-concave surface, light beam will produce irregular reflection (diffusion (diffuse)), right present embodiment is with the smooth surface incident of light beam by 324 back sides, light shielded area, but make the light beam regular reflection that is incident in light shielded area 324, to prevent that folded light beam from injecting the light path of projection lens, so can more effectively reach the generation of the spuious image of anti-system.
As shown in Figure 6, the side of mask structure 32 can be provided with antireflection (Anti-Reflection, AR) layer 325 to promote the light beam transmissivity, reduce light beam and pass the luminance loss that different medium produces, and system brightness is promoted.
The 3rd embodiment:
The element that present embodiment is identical or suitable with above-mentioned second embodiment is to indicate same figure number, as shown in Figure 7, and present embodiment and the foregoing description difference are: mask structure 42 is to be a metal substrate 421, metal substrate 421 centers offer a through hole 422 to form transmitance region, through hole 422 peripheral part then are the light shielded area, to be made into integration this mask structure 42, use the mask structure that the replacement previous embodiment is formed by transparency carrier and coating, reduce cost to reach; And this mask structure 42 directly can be attached at the plane of incidence of no shade type digital micro-mirror device 23, so that through hole 422 is near the plane of incidence (being imaging surface) of digital micro-mirror device 23, with the more accurate light beam that is projeced into electrical connections 232 that stops.
The light beam that provides when lighting unit 21 is projeced into mask structure 42, wherein segment beam is passed through by the through hole 422 at mask structure 42 centers, directly be incident in micromirror array 231 zones of the digital micro-mirror device 23 at its rear, wherethrough reason reflection back is presented in screen (figure does not show) by projection lens 25 with image, and all the other are projeced into the light beam on the metal substrate 421, the absorption and the reflex that are subjected to metal stop, and confine optical beam is projeced into electrical connections 232 zones on the digital micro-mirror device, therefore, can stop the light beam that is projeced into electrical connections by mask structure 42, be presented on the screen (figure does not show) to avoid light beam to produce spuious image by the electrical connection section sub reflector.
The above, only in order to convenient explanation the preferred embodiments of the present invention, scope of the present invention is not limited to these preferred embodiments, and is all according to any change that the present invention did, and do not breaking away under the spirit of the present invention, all belongs to claims scope of the present invention.
Claims (12)
1. projection display equipment with mask structure comprises:
One provides the lighting unit of light beam;
One is located at the mask structure at the rear of this lighting unit, and this mask structure comprises a substrate, and this substrate is provided with a transmitance region and is located at its light shielded area on every side; And
One digital micro-mirror device, this digital micro-mirror device is located at the rear of this mask structure, with beam reflection to a projection lens.
2. the projection display equipment with mask structure as claimed in claim 1 is characterized in that: this substrate is a transparency carrier.
3. the projection display equipment with mask structure as claimed in claim 2 is characterized in that: the light shielded area of this mask structure is a light non-transmittable layers.
4. the projection display equipment with mask structure as claimed in claim 3 is characterized in that: this light non-transmittable layers is to be located at the side of this transparency carrier towards this digital micro-mirror device.
5. the projection display equipment with mask structure as claimed in claim 3 is characterized in that: this light non-transmittable layers is to be located at the side of this transparency carrier back to this digital micro-mirror device.
6. the projection display equipment with mask structure as claimed in claim 3 is characterized in that: this light non-transmittable layers is to make in the coating mode.
7. the projection display equipment with mask structure as claimed in claim 3 is characterized in that: this light non-transmittable layers is to make with mode of printing.
8. the projection display equipment with mask structure as claimed in claim 1 is characterized in that: the side of this substrate can be provided with anti-reflecting layer.
9. the projection display equipment with mask structure as claimed in claim 1 is characterized in that: this substrate can be metal substrate, and its center is provided with a perforate.
10. the projection display equipment with mask structure as claimed in claim 1 is characterized in that: this digital micro-mirror device has a micromirror array, and is exposed to the electrical connections around it.
11. the projection display equipment with mask structure as claimed in claim 1 is characterized in that: be one minimum gap, interval between this mask structure and digital micro-mirror device.
12. the projection display equipment with mask structure as claimed in claim 1 is characterized in that: this mask structure is can be attached on the plane of incidence of this digital micro-mirror device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101010924A CN100399185C (en) | 2003-10-14 | 2003-10-14 | Projection display device with mask structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101010924A CN100399185C (en) | 2003-10-14 | 2003-10-14 | Projection display device with mask structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1607456A true CN1607456A (en) | 2005-04-20 |
| CN100399185C CN100399185C (en) | 2008-07-02 |
Family
ID=34756102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101010924A Expired - Fee Related CN100399185C (en) | 2003-10-14 | 2003-10-14 | Projection display device with mask structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100399185C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359159B (en) * | 2007-07-30 | 2010-06-02 | 鸿富锦精密工业（深圳）有限公司 | Projection optical system |
| CN106647106A (en) * | 2016-12-15 | 2017-05-10 | 丁小平 | Window plate, front hood cartridge and camera aid auxiliary device |
| CN109254484A (en) * | 2017-07-14 | 2019-01-22 | 台达电子工业股份有限公司 | Has the digital micro-mirror device of radiator structure |
| CN110082999A (en) * | 2018-01-26 | 2019-08-02 | 中强光电股份有限公司 | Projector, light engine and picture element offset assembly |
| CN113654003A (en) * | 2020-05-12 | 2021-11-16 | 宁波舜宇车载光学技术有限公司 | Light reflection device, method of manufacturing the same, imaging member, and light processing system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6195209B1 (en) * | 1999-05-04 | 2001-02-27 | U.S. Precision Lens Incorporated | Projection lenses having reduced lateral color for use with pixelized panels |
| JP4032658B2 (en) * | 2000-06-14 | 2008-01-16 | 三菱電機株式会社 | Projection display |
| JP4846936B2 (en) * | 2001-08-10 | 2011-12-28 | リコー光学株式会社 | Projection zoom lens and image projection apparatus |
| JP3515972B2 (en) * | 2002-01-31 | 2004-04-05 | 株式会社タムロン | Projection device |
-
2003
- 2003-10-14 CN CNB2003101010924A patent/CN100399185C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101359159B (en) * | 2007-07-30 | 2010-06-02 | 鸿富锦精密工业（深圳）有限公司 | Projection optical system |
| US7841727B2 (en) | 2007-07-30 | 2010-11-30 | Hon Hai Precision Industry Co., Ltd. | Projection optical system having a light blocker |
| CN106647106A (en) * | 2016-12-15 | 2017-05-10 | 丁小平 | Window plate, front hood cartridge and camera aid auxiliary device |
| CN109254484A (en) * | 2017-07-14 | 2019-01-22 | 台达电子工业股份有限公司 | Has the digital micro-mirror device of radiator structure |
| CN109254484B (en) * | 2017-07-14 | 2021-05-04 | 台达电子工业股份有限公司 | Digital micro-mirror device with heat radiation structure |
| CN110082999A (en) * | 2018-01-26 | 2019-08-02 | 中强光电股份有限公司 | Projector, light engine and picture element offset assembly |
| CN110082999B (en) * | 2018-01-26 | 2021-11-16 | 中强光电股份有限公司 | Projector, optical engine and pixel shifting device |
| CN113654003A (en) * | 2020-05-12 | 2021-11-16 | 宁波舜宇车载光学技术有限公司 | Light reflection device, method of manufacturing the same, imaging member, and light processing system |
| CN113654003B (en) * | 2020-05-12 | 2024-04-12 | 宁波舜宇车载光学技术有限公司 | Light reflection device, method of manufacturing the same, imaging member, and light processing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100399185C (en) | 2008-07-02 |
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Granted publication date: 20080702 Termination date: 20101014 |