CN1396477A - Colour display using luminous wheel - Google Patents
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- CN1396477A CN1396477A CN 01122732 CN01122732A CN1396477A CN 1396477 A CN1396477 A CN 1396477A CN 01122732 CN01122732 CN 01122732 CN 01122732 A CN01122732 A CN 01122732A CN 1396477 A CN1396477 A CN 1396477A
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Abstract
A colour display with luminous wheel has a back light source composed of the exciting light source and luminous wheel coated with luminescent material. Under the action of exciting light source and luminous wheel, the back light source can sequentially emit red, green and blue lights, which are sequentially projected on a light valve to display red, green and blue images. These images are combined into a colour image which is then projected onto the screen. Its advantages are high brightness, colour purity and definition, and low cost.
Description
The invention relates to colour display device, particularly with the improvement of the colour display device of backlight.
Along with the development of HDTV, colour projection display (being the projection colour display device) is particularly just being brought into play the effect that becomes more and more important with the colour projection display of backlight.Colour projection display is to utilize projection amplifying lens and projector space that the colorful light-emitting image is amplified and be presented at device on the projection screen.The display device (light valve) that the colour projection display of band backlight adopts mainly is TFT-LCD and DMD, and wherein TFT-LCD is divided into transmission-type TFT-LCD and reflective TFT-LCD (comprising LCOS) again.According to the light valve quantity difference that adopts, the TFT-LCD colour projection display is divided into single liquid crystal screen formula and three liquid crystal display formulas, and the DMD colour projection display is divided into single DMD formula and three DMD formulas.
Three liquid crystal display formulas and three DMD formula colour projection display brightness height, picture quality is good, but optical system, particularly colour splitting system complexity, and need to adopt three display devices, so the cost height, the red, green, blue image three-colo(u)r is assembled and is had relatively high expectations simultaneously.Single liquid crystal screen formula colour projection display is simple, does not exist image to assemble problem, but stricter to the optical element requirement, three sub-pixels of red, green, blue all need to concentrate on the liquid crystal display in addition, and the liquid crystal display cost is much higher.Single DMD formula colour projection display is the simplest, and it only adopts the color separation of a rotation filter wheel, but brightness is very low, compares with three DMD formulas, and picture quality is relatively poor.
The direct viewing type color liquid crystal display arrangement generally adopts TFT-LCD as display device, adopt the white cold-cathode fluorescence lamp that comprises the red, green, blue light component in the spectrum or EL or LED as backlight, red, green, blue look little filter coating is arranged in the liquid crystal display, carry out color separation by them, therefore luminescence efficiency is low, and because a pixel is made of three sub-pixels of red, green, blue look, resolution further raising is restricted, and cost is higher.
The objective of the invention is to solve the above-mentioned shortcoming that exists in the colour display device of existing band backlight.In colour display device of the present invention, only use a light valve, and replace rotation filter wheel (hereinafter to be referred as filter wheel) with rotary color light-emitting wheel (hereinafter to be referred as rotation light-emitting wheel or light-emitting wheel), can excitation light-emitting material luminous light source (hereinafter to be referred as excitation source) replace white light source with having, can realize this purpose.
Be elaborated below.
The principle of three liquid crystal display formula colour projection displays is that the white light from light source is divided into red, green, blue three coloured light by dichronic mirror, shine respectively on each self-corresponding liquid crystal display, pixel is respectively through three kinds of primary colour signal modulation of red, green, blue in three liquid crystal displays, produce red, green, blue three width of cloth monochrome images, again through overconvergence, project at last on the projection screen, form the bigger coloured image of size.Three liquid crystal display formula colour projection display brightness height, picture quality is good, but device is complicated, image is assembled required height.The principle of single liquid crystal screen formula colour projection display is being divided into red, green, blue three coloured light from the white light of the light source dichronic mirror by three oblique arrangement, and make respectively its with certain angular illumination on same liquid crystal display, red, green, blue is before the irradiating liquid crystal screen, red, green, blue is focused on separately the red, green, blue pixel earlier by microlens array plate, then after three kinds of primary colour signal modulation of red, green, blue, produce coloured image, this coloured image projects on the projection screen again, forms the bigger coloured image of size.Single liquid crystal screen formula colour projection display is simple, do not need to assemble, but more complicated and stricter to the requirement of color separation optical system and optical element.Though only use a liquid crystal display in addition in single liquid crystal screen formula colour projection display, in order to obtain and the same resolution of three liquid crystal display formulas, its pixel count is three times of liquid crystal display pixel count in the three liquid crystal display formulas, so cost is also higher.
At least comprise backlight, transmissive light valve, projection amplifying lens and the projection screen formed by excitation source and rotation light-emitting wheel in a kind of single light valve formula colour projection display of the present invention, under excitation source and the effect of rotation light-emitting wheel, backlight produces red, green, blue coloured light successively, red, green, blue coloured light directly throws or is incident upon on the light valve by projecting lens, and on light valve, form coloured image by the field sequence mode, coloured image is incident upon on the projection screen by the projection amplifying lens again, forms the bigger coloured image of size.For example excitation source is a ultraviolet source, order is divided into one group or array red, green, blue look luminous zone on the light-emitting wheel, on the red, green, blue look luminous zone respectively coated red, green, blue look luminescent material is arranged, they send red, green, blue coloured light respectively under ultraviolet excitation, transmissive light valve is TFT-LCD.Its basic functional principle is to carry out colour by the field sequence mode to show, specific as follows: under the situation of light-emitting wheel by certain rotating speed rotation, when red luminous zone rotates to ultraviolet source following time successively, under ultraviolet excitation, send ruddiness successively, ruddiness is incident upon on the TFT-LCD by projecting lens, and under the danger signal modulation, pixel is lined by line scan synchronously successively among the TFT-LCD, produces red image.When the green emitting district rotates to ultraviolet source following time successively, under ultraviolet excitation, send green glow, green glow is incident upon on the TFT-LCD by projecting lens, and under the green modulation, the TFT-LCD pixel is lined by line scan synchronously successively, produces green image.When the blue-light-emitting district rotates to ultraviolet source following time successively, under the exciting of ultraviolet light, send blue light, blue light is incident upon on the TFT-LCD by projecting lens, and under the blue signal modulation, the liquid crystal display pixel is lined by line scan synchronously successively, produces blue image.Under the enough fast condition of the rotating speed of light-emitting wheel, red, green, blue three width of cloth monochrome images synthesize a width of cloth coloured image.This coloured image projects on the projection screen by the projection amplifying lens again, forms the bigger coloured image of size.Owing to optical systems such as not needing dichronic mirror is carried out color separation and synthetic to red, green, blue three coloured light, device is greatly simplified, only adopt simultaneously a TFT-LCD, carrying out colour by the field sequence mode shows, the pixel count of TFT-LCD is identical with the pixel count of liquid crystal display in the three liquid crystal display formulas, cost significantly descends, and does not have the problem of color registration, and color image quality significantly improves.Light valve not only can adopt transmission-type in the single light valve formula colour projection display of the present invention, also can adopt reflectively, comprises LCOS.For transmission-type, red, green, blue directly or by the projecting lens order is incident upon on the light valve, and for reflective, red, green, blue is incident upon on the light valve by the projecting lens order.
DMD is a kind of extremely promising new display spare that occurs not long ago and develop rapidly, three DMD formula principles are similar to three liquid crystal display formulas, be that it also is that the white light from light source is divided into red, green, blue three coloured light by dichronic mirror, shine respectively on each self-corresponding DMD, micro mirror in three DMD (being pixel) is respectively after the modulation of red, green, blue primary colour signal, produce red, green, blue three width of cloth monochrome images, again through assembling, synthesize coloured image, project at last and form the bigger coloured image of size on the projection screen.Three DMD formula structures and three liquid crystal display formulas are similar, and main difference is that three liquid crystal displays are replaced by three DMD.But liquid crystal display can be used transmission mode in three liquid crystal display formulas, also available reflection mode, and DMD uses the reflection mode only in three DMD formulas.Three DMD formula shortcomings and three liquid crystal display formulas are roughly the same.Single DMD formula adopts a DMD and the white light source of red, green, blue light component is arranged, and adds the filter wheel of a high speed rotating between light source and DMD.When filter wheel rotated, it was a red, green, blue coloured light with white light conversion successively.When red filter area rotates to certain position, white light is by red filter coating, become ruddiness, be radiated on the DMD, the DMD micro mirror is subjected to the danger signal synchronous modulation, show red image, similarly, when green filter area rotates to certain position, show green image, when blue filter area rotates to certain position, show blue image.Under the enough fast situation of filter wheel rotating speed,, form coloured image because of the human eye vision persistence characteristic.Single DMD formula is used the filter wheel color separation, carry out colour by the field sequence mode and show, so brightness significantly reduces.Compare with three DMD formulas, single DMD formula picture quality is relatively poor, but it is simple in structure, and cost is low.
At least comprise backlight, projecting lens, optical valve in reflection type, projection amplifying lens and the projection screen formed by excitation source and rotation light-emitting wheel in the another kind of single light valve formula colour projection display of the present invention, under excitation source and the effect of rotation light-emitting wheel, backlight produces red, green, blue coloured light successively, red, green, blue coloured light is incident upon on the light valve by projecting lens, and on light valve, form coloured image by the field sequence mode, coloured image is incident upon on the projection screen by the projection amplifying lens again, forms the bigger coloured image of size.For example excitation source is a ultraviolet source, order is divided into one or more groups red, green, blue look luminous zone on the light-emitting wheel, on the red, green, blue look luminous zone respectively coated red, green, blue look luminescent material is arranged, they send red, green, blue coloured light respectively under ultraviolet excitation, optical valve in reflection type is DMD.Its principle of work and existing single DMD formula are similar, be that it also is to carry out colour by the field sequence mode to show, detailed process is as follows: under the situation of light-emitting wheel by certain rotating speed rotation, when red luminous zone rotates to ultraviolet source following time successively, under ultraviolet excitation, send ruddiness, ruddiness is incident upon on the DMD through projecting lens, under the danger signal modulation, the last micro mirror of DMD is lined by line scan synchronously successively, produces red image.Similarly, when the green emitting district rotates to ultraviolet source following time, send green glow successively, green glow is incident upon on the DMD through projecting lens, and under the green modulation, the last micro mirror of DMD is lined by line scan synchronously successively, the generation green image.When the blue-light-emitting district rotates to ultraviolet source following time, produce blue image.Under the enough fast condition of light-emitting wheel rotating speed, red, green, blue three width of cloth monochrome images synthesize a width of cloth coloured image.This coloured image projects on the projection screen by the projection amplifying lens again, forms bigger coloured image.Owing to replace filter wheel with light-emitting wheel, luminescence efficiency greatly improves, and compares with existing single DMD formula colour projection display, and brightness significantly improves.Optical valve in reflection type also can adopt reflective TFT-LCD, comprises LCOS.
By above explanation as can be known: colour projection display of the present invention adopts light-emitting wheel to replace filter wheel, shows by field sequence type, and therefore device is simple, the luminescence efficiency height, and picture quality is good.Its principle is not only applicable to the projection colour display device, and is applicable to micro color display device (virtual type colour display device), also is applicable to the direct viewing type colour display device, is specially adapted to the direct viewing type color liquid crystal display arrangement.
At least comprise backlight, projection amplifying lens and the light valve formed by excitation source and rotation light-emitting wheel in the direct viewing type color liquid crystal display arrangement of the present invention, under the effect of excitation source and rotation light-emitting wheel, backlight produces red, green, blue coloured light successively, red, green, blue coloured light is incident upon on the light valve by the projection amplifying lens, and forms coloured image by the field sequence mode on light valve.For example excitation source is a ultraviolet source, order is divided into one or more groups red, green, blue look luminous zone on the light-emitting wheel, on the red, green, blue look luminous zone respectively coated red, green, blue look luminescent material is arranged, they send red, green, blue coloured light respectively under ultraviolet excitation, light valve is a liquid crystal display device.Its principle of work is as follows: under the situation of light-emitting wheel by certain rotating speed rotation, when red luminous zone rotates under the ultraviolet source successively, under ultraviolet excitation, send ruddiness, ruddiness projects on the liquid crystal display device through the projection amplifying lens, under the danger signal modulation, pixel is lined by line scan synchronously successively in the liquid crystal display device, produces red image.Similarly,, produce green image,, produce blue image when the blue-light-emitting district rotates to ultraviolet source following time successively when the green emitting district rotates to ultraviolet source following time successively.Under the enough fast condition of the rotating speed of light-emitting wheel, red, green, blue three width of cloth monochrome images synthesize a width of cloth coloured image at last.
At least comprise backlight, light valve and the amplifying lens formed by excitation source and rotation light-emitting wheel in the virtual type colour display device of the present invention, under excitation source and light-emitting wheel effect, backlight produces red, green, blue coloured light successively, red, green, blue coloured light directly throws or is incident upon on the light valve by projecting lens, and on light valve, form coloured image by the field sequence mode, human eye is watched coloured image by amplifying lens, can see the virtual coloured image that size is bigger.For example excitation source is a ultraviolet source, order is divided into one or more groups red, green, blue look luminous zone on the light-emitting wheel, on the red, green, blue look luminous zone respectively coated red, green, blue look luminescent material is arranged, they send red, green, blue coloured light respectively under ultraviolet excitation, light valve is a liquid crystal display device, also can be DMD.Its principle of work and above-mentioned colour projection display are roughly the same, difference only is not to be to project on the projection screen by the projection amplifying lens by the synthetic coloured image of red, green, blue three width of cloth monochrome images at last, but by the amplifying lens direct viewing, what seen is the virtual coloured image that amplifies.
In the various devices, ultraviolet source can replace with the purple light source more than of the present invention, also can replace with blue-light source or blue-green light source.For different light sources, should select corresponding luminescent material, luminescent material comprises phosphor and luminous organic material.The dichroism of structure and beam splitting system should corresponding change on the light-emitting wheel simultaneously.For ultraviolet source or purple light source, be divided into the red, green, blue luminous zone on the light-emitting wheel, they excite down at ultraviolet light or purple light, send red, green, blue coloured light respectively.For blue-light source, be divided into red, green luminous zone and blue light transmission area on the light-emitting wheel, coated has red, green luminescent material on red, the green luminous zone, and they send red, green light respectively down blue-light excited, and the blue light transmission area passes through blue light.For the blue-green light source, be divided into red on the light-emitting wheel, green emitting district and blue filter area, red, coated has red in the green emitting district, green luminescent material, coated has blue filter coating on the blue filter area, the emitting red light district excites down at blue green light, send ruddiness, the green emitting district is blue-light excited in blue green light down to send green glow, and allows green glow passes through in the blue green light, after blue filter area passes through blue green light, become blue light, or order is divided into the emitting red light district on the light-emitting wheel, green filter area and blue filter area, coated has red illuminating material in the emitting red light district, in indigo plant, green glow excites down, send ruddiness, coated has green filter film on the green filter area, and coated has blue filter coating on the blue filter area, blue green light becomes green glow by green filter area, and blue green light becomes blue light by blue filter area.In above various devices, light valve can be Digital Micromirror Device, also can be liquid crystal display device, liquid crystal display device is divided into transmission-type and reflective, in reflection-type liquid-crystal display device, also comprise LCOS, in addition, liquid crystal display device also comprises plasma addressed liquid crystal display spare, i.e. PALCD.
In a word, backlight is made up of excitation source and rotation light-emitting wheel in the colour display device of the present invention, and under the effect of excitation source and light-emitting wheel, backlight sends red, green, blue coloured light successively.For the colour projection display that adopts optical valve in reflection type, adopt projecting lens that red, green, blue coloured light is incident upon on the light valve successively, behind the formation image, be incident upon on the projection screen by the projection amplifying lens.For the colour projection display that adopts transmissive light valve, then red, green, blue coloured light directly or by projecting lens can be incident upon on the light valve successively.For the direct viewing type colour display device, the coloured image on the direct viewing light valve then.For virtual type colour display device, then watch coloured image (virtual image) on the light valve by amplifying lens.Colour display device of the present invention only adopts a light valve to carry out the colored demonstration of field sequence type, and adopt excitation source and rotation light-emitting wheel to carry out color separation as backlight, so spectroscopical effeciency height, device is simple, cost is low, does not have the convergence problem, the brightness height, picture quality obtains bigger improvement, can be widely used in TV, monitor, Projection Display and virtual demonstration.
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 are various colour display device structural representations of the present invention.1A is a metal halide lamp in Fig. 1 to Fig. 4, and 1B is ultraviolet LED light source, wherein 1B
1Be diffusing panel, 1B
2Be ultraviolet LED, 1B
3Be reflecting plate, 2A is DMD, and 2B is reflective TFT-liquid crystal display, 2C is the TFT-liquid crystal display, and 2D is transmission-type TFT-LCD, and R is a catoptron, 3A is the projection amplifying lens, and 3B is an amplifying lens, and 4A is a projection screen, 4B is a virtual image, 5A is a projecting lens, and F1 is a cutoff filter, and M is a motor, LW is a light-emitting wheel, and E is the beholder.Fig. 5 is existing single DMD formula colour projection display structural representation, and Fig. 6 is existing three-screen type colour projection display structural representation.1C is the white metal halide lamp in Fig. 5 and Fig. 6, and F2 is infrared and the ultraviolet cut-on optical filter.FW is a filter wheel in Fig. 5, and M is a motor, and all the other are the same.2r, 2g, 2b are respectively red, green, blue TFT-LCD in Fig. 6, and M1, M2 are dichronic mirrors, and M3, M4 close the look mirror, and R1, R2 are catoptrons, and all the other are the same.
Specify with example below.
Example 1
1A is ultraviolet lead-mercury halide lamp in the colour projection display of Fig. 1, and F1 is the IR-cut optical filtering, and LW is a light-emitting wheel, and M is a motor, and 2A is DMD, and 3A is the projection amplifying lens, and 4A is a projection screen, and 5A is a projecting lens.Send ultraviolet light during the work of lead-mercury halide lamp, series arrangement red, green, blue, six luminous zones of red, green, blue on light-emitting wheel, on it respectively coated red, green, blue look luminescent material is arranged.This device principle of work is as follows: under the situation of light-emitting wheel by certain rotating speed rotation, when red luminous zone rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends ruddiness successively, ruddiness is incident upon on the DMD through projecting lens, and under the danger signal modulation, the last micro mirror of DMD is lined by line scan synchronously successively, produces red image.When the green emitting district rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends green glow successively, and green glow is incident upon on the DMD through projecting lens, and under the green modulation, the last micro mirror of DMD is lined by line scan synchronously successively, the generation green image.When the blue-light-emitting district rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends blue light successively, and blue light is incident upon on the DMD through projecting lens, and under the blue signal modulation, the last micro mirror of DMD is lined by line scan synchronously successively, the generation blue image.During greater than 75Hz, red, green, blue three width of cloth monochrome images synthesize a width of cloth coloured image at the light-emitting wheel rotating speed.This coloured image projects on the projection screen through the projection amplifying lens, forms the bigger coloured image of size.
Example 2
2B is LCOS in the colour projection display of Fig. 2, and all the other are with example 1, and its principle of work and example 1 are basic identical.Under the situation of light-emitting wheel by certain rotating speed rotation, when the rotation of red luminous zone forwards lead-mercury halide lamp following time successively to, under ultraviolet excitation, light-emitting wheel sends ruddiness successively, ruddiness is incident upon on the LCOS through projecting lens, and under the danger signal modulation, the last pixel of LCOS is lined by line scan synchronously successively, produces red image.When the green emitting district rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends green glow successively, green glow is incident upon on the LCOS through projecting lens, and under the green modulation, the last pixel of LCOS is lined by line scan synchronously successively, produces green image.When the blue-light-emitting district rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends blue light successively, blue light is incident upon on the LCOS through projecting lens, and under the blue signal modulation, the last pixel of LCOS is lined by line scan synchronously successively, produces blue image.During greater than 75Hz, red, green, blue three width of cloth monochrome images synthesize a width of cloth coloured image at the light-emitting wheel rotating speed.This coloured image projects on the projection screen through the projection amplifying lens, forms the bigger coloured image of size.
Example 3
3A is the projection amplifying lens in the direct viewing type colour display device of Fig. 3, and 2C is 15 inches TFT-LCD, and R is a catoptron, and all the other are with example 1.Its principle of work is as follows: under the situation of light-emitting wheel by certain rotating speed rotation, when red luminous zone rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends ruddiness successively, ruddiness is incident upon on the TFT-LCD through projection amplifying lens and catoptron, and under the danger signal modulation, the last pixel of TFT-LCD is lined by line scan synchronously successively, produces red image.When the green emitting district rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends green glow successively, green glow is incident upon on the TFT-LCD through projecting lens and catoptron, and under the green modulation, the last pixel of TFT-LCD is lined by line scan synchronously successively, produces green image.When the blue-light-emitting district rotates to lead-mercury halide lamp following time successively, under ultraviolet excitation, light-emitting wheel sends blue light successively, blue light is incident upon on the TFT-LCD through projecting lens and catoptron, under the blue signal modulation, the last pixel of TFT-LCD is lined by line scan synchronously successively, produces blue image.During greater than 75Hz, red, green, blue three width of cloth monochrome images synthesize a width of cloth coloured image at the light-emitting wheel rotating speed.
Example 4
1B is ultraviolet LED light source, wherein 1B in little colour display device of Fig. 4
1Be diffusing panel, 1B
2Be ultraviolet LED, 1B
3Be reflecting plate, 2D is 0.9 inch transmission-type TFT-LCD, and 3B is an amplifying lens, and 4B is a virtual image, beholder during E, and all the other are with example 1.LED sends ultraviolet light when work, it passes through the diffusing panel uniform irradiation on light-emitting wheel.Its principle of work is as follows: under the situation of light-emitting wheel by certain rotating speed rotation, when the emitting red light district rotates to before the diffusing panel successively, under ultraviolet excitation, the ruddiness that the emitting red light district sends successively is radiated on the TFT-LCD by projecting lens, and under the danger signal modulation, the last pixel of TFT-LCD is lined by line scan synchronously successively, produces red image.In the time of before the green emitting district rotates to diffusing panel successively, under ultraviolet excitation, the green glow that the green emitting district sends successively is radiated on the TFT-LCD by projecting lens, and under the green modulation, the last pixel of TFT-LCD is lined by line scan synchronously successively, produces green image.In the time of before the blue-light-emitting district rotates to diffusing panel successively, under ultraviolet excitation, the blue light that the blue-light-emitting district sends successively is radiated on the TFT-LCD by projecting lens, and under the blue signal modulation, the last pixel of TFT-LCD is lined by line scan synchronously successively, produces blue image.During greater than 75Hz, red, green, blue three width of cloth monochrome images synthesize coloured image at the light-emitting wheel rotating speed.Watch this coloured image by amplifying lens, can see a virtual coloured image that amplifies.
Example 5
1A is cyan thallium-indium halide lamp in the colour projection display of Fig. 1, thallium-indium halide lamp sends cyan light when working, series arrangement two groups of emitting red light districts, green filter area and blue filter area on light-emitting wheel, coated has red illuminating material in the emitting red light district, coated has green filter film on the green filter area, coated has blue filter coating on the blue filter area, and all the other are with example 1.Its principle of work is as follows: under the situation of light-emitting wheel by certain rotating speed rotation, when red luminous zone rotates to thallium-indium halide lamp following time successively, excite down in cyan light, light-emitting wheel sends ruddiness successively, ruddiness is incident upon on the DMD through projecting lens, and under the danger signal modulation, the last micro mirror of DMD is lined by line scan synchronously successively, produces red image.When green filter area rotates to thallium-indium halide lamp following time successively, the cyan light that thallium-the indium halide lamp sends becomes green light through green filter area, and green glow is incident upon on the DMD through projecting lens, and under the green modulation, the last micro mirror of DMD is lined by line scan synchronously successively, produces green image.Similarly, when blue filter area rotates to thallium-indium halide lamp following time successively, the cyan light that thallium-the indium halide lamp sends becomes blue light through blue filter area, blue light is incident upon on the DMD through projecting lens, and under the blue signal modulation, the last micro mirror of DMD is lined by line scan synchronously successively, produces blue image.During greater than 75Hz, red, green, blue three width of cloth monochrome images synthesize a width of cloth coloured image at the light-emitting wheel rotating speed.This coloured image projects on the projection screen through the projection amplifying lens, forms the bigger coloured image of size.
Claims (7)
1. colour projection display, it is characterized in that comprising at least in this device backlight, projecting lens, optical valve in reflection type, projection amplifying lens and the projection screen of forming by excitation source and rotation light-emitting wheel, under excitation source and the effect of rotation light-emitting wheel, backlight produces red, green, blue coloured light successively, red, green, blue coloured light is incident upon on the light valve by projecting lens, and on light valve, form coloured image by the field sequence mode, coloured image is incident upon on the projection screen by the projection amplifying lens again, forms the bigger coloured image of size.
2. colour projection display, it is characterized in that comprising at least in this device backlight, transmissive light valve, projection amplifying lens and the projection screen of forming by excitation source and rotation light-emitting wheel, under excitation source and the effect of rotation light-emitting wheel, backlight produces red, green, blue coloured light successively, red, green, blue coloured light directly throws or is incident upon on the light valve by projecting lens, and on light valve, form coloured image by the field sequence mode, coloured image is incident upon on the projection screen by the projection amplifying lens again, forms the bigger coloured image of size.
3. direct viewing type colour display device, it is characterized in that comprising at least in this device backlight, projection amplifying lens and the light valve of forming by excitation source and rotation light-emitting wheel, under the effect of excitation source and rotation light-emitting wheel, backlight produces red, green, blue coloured light successively, red, green, blue coloured light is incident upon on the light valve by the projection amplifying lens, and forms coloured image by the field sequence mode on light valve.
4. virtual type colour display device, it is characterized in that comprising at least in this device backlight, light valve and the amplifying lens of forming by excitation source and rotation light-emitting wheel, under excitation source and the effect of rotation light-emitting wheel, backlight produces red, green, blue coloured light successively, red, green, blue coloured light directly or by projecting lens is incident upon on the light valve, and on light valve, forming coloured image by the field sequence mode, human eye is watched coloured image by amplifying lens, can see the virtual coloured image that size is bigger.
5. according to the colour display device of claim 1 or 2 or 3 or 4, it is characterized in that excitation source is ultraviolet source or purple light source, order is divided into one or more groups red, green, blue look luminous zone on the light-emitting wheel, on the red, green, blue look luminous zone respectively coated red, green, blue look luminescent material is arranged, they are at ultraviolet light or send red, green, blue coloured light respectively purple light excited time, and light valve is Digital Micromirror Device or liquid crystal display device or plasma addressed liquid crystal display spare.
6. according to the colour display device of claim 1 or 2 or 3 or 4, it is characterized in that excitation source is a blue-light source, on the light-emitting wheel order be divided into that one or more groups is red, green emitting district and blue light transmission area, in red, the green emitting district respectively coated red, green luminescent material is arranged, they send red, green light respectively under blue-light excited, the blue light transmission area passes through blue light, and light valve is Digital Micromirror Device or liquid crystal display device or plasma addressed liquid crystal display spare.
7. according to the colour display device of claim 1 or 2 or 3 or 4, it is characterized in that excitation source is the blue-green light source, it is red to be divided into one or more groups on the light-emitting wheel in proper order, green emitting district and blue filter area, red, in the green emitting district respectively coated have red, green luminescent material, coated has blue filter coating on the blue filter area, the emitting red light district excites down at blue green light, send red light, the green emitting district is blue-light excited following in blue green light, send green glow, and allow green glow passes through in the blue green light, after blue filter area passes through blue green light, become blue light, perhaps order is divided into one or more groups emitting red light district on the light-emitting wheel, green filter area and blue filter area, coated has red illuminating material in the emitting red light district, coated has green filter film on the green filter area, coated has blue filter coating on the blue filter area, the emitting red light district is in indigo plant, green glow excites down, send red light, blue green light becomes green glow by green filter area, blue green light becomes blue light by blue filter area, and light valve is Digital Micromirror Device or liquid crystal display device or plasma addressed liquid crystal display spare.
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| CN 01122732 CN1198165C (en) | 2001-07-14 | 2001-07-14 | Colour display using luminous wheel |
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| CN 01122732 CN1198165C (en) | 2001-07-14 | 2001-07-14 | Colour display using luminous wheel |
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| CN1198165C CN1198165C (en) | 2005-04-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100430776C (en) * | 2006-01-25 | 2008-11-05 | 中强光电股份有限公司 | Illumination system and optical projection device |
| CN105204149A (en) * | 2015-10-30 | 2015-12-30 | 吴东辉 | Passive oriented reflection imaging device |
| CN107005645A (en) * | 2014-09-10 | 2017-08-01 | 惠普发展公司，有限责任合伙企业 | The image projection shown while with LED light and capture |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101211095B (en) * | 2006-12-29 | 2010-05-12 | 群康科技(深圳)有限公司 | Projection display device |
-
2001
- 2001-07-14 CN CN 01122732 patent/CN1198165C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100430776C (en) * | 2006-01-25 | 2008-11-05 | 中强光电股份有限公司 | Illumination system and optical projection device |
| CN107005645A (en) * | 2014-09-10 | 2017-08-01 | 惠普发展公司，有限责任合伙企业 | The image projection shown while with LED light and capture |
| CN105204149A (en) * | 2015-10-30 | 2015-12-30 | 吴东辉 | Passive oriented reflection imaging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1198165C (en) | 2005-04-20 |
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