CN110873999A

CN110873999A - Light source device, display equipment and color wheel assembly

Info

Publication number: CN110873999A
Application number: CN201810996887.2A
Authority: CN
Inventors: 鄢圣巍; 李屹
Original assignee: Appotronics Corp Ltd
Current assignee: Shenzhen Appotronics Corp Ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-03-10
Anticipated expiration: 2038-08-29
Also published as: WO2020042564A1; CN110873999B

Abstract

The invention relates to a light source device, a display device and a color wheel assembly. The color wheel assembly comprises a bearing part and at least two luminous areas arranged on the outer surface of the bearing part, wherein each light emitting area is used for receiving exciting light and emitting corresponding color light, and the at least two light emitting areas emit at least two colors of light, the carrier being capable of rotating about and moving along a predetermined axis about which the carrier rotates, so that different positions of each light-emitting area are sequentially positioned on the light path of the exciting light, the bearing piece moves along the preset axis and also drives the at least two light-emitting areas to move, and the at least two light-emitting areas are sequentially positioned on the light path of the exciting light, and then the luminous zones on the exciting light path are sequentially excited, and the carrier moves along the preset axis to further adjust the proportion of each luminous zone in one frame image.

Description

Light source device, display equipment and color wheel assembly

Technical Field

The invention relates to the technical field of display, in particular to a light source device, display equipment and a color wheel assembly.

Background

With the continuous improvement of the technical level, the demand of people on the display effect of the display device is also continuously improved, and the requirement of dynamic contrast is also put forward in order to make the display image quality more suitable for the human eyes to watch. In addition, the requirement of high-brightness laser for heat dissipation is also increasing. In this context, the traditional disk-shaped solidifying color wheel assembly segmentation mode is increasingly unable to meet the requirements of people.

Specifically, most of the prior art in the market are circular color wheels, and the proportion of the color wheel assembly RGBY color segments is fixed on the color wheel, so that the proportion of each color segment in a unit period cannot be dynamically adjusted. Particularly, some color wheel assemblies can use a reflector to switch the gears of different color segments, but the color wheel assemblies are also solidified on the color wheel sheet, and the proportion of the color segments in a unit period cannot be dynamically adjusted in real time, so that the structure of the existing color wheel assembly is difficult to meet the requirement of dynamically adjusting the proportion of various colors of light, and needs to be improved.

Disclosure of Invention

In view of the above, the present invention provides a color wheel assembly, a light source device and a display device which are favorable for dynamically adjusting the ratio of light of various colors.

A color wheel assembly comprises a bearing component and at least two luminous zones arranged on the outer surface of the bearing component, wherein each light emitting area is used for receiving exciting light and emitting corresponding color light, and the at least two light emitting areas emit at least two colors of light, the carrier being capable of rotating about and moving along a predetermined axis about which the carrier rotates, so that different positions of each light-emitting area are sequentially positioned on the light path of the exciting light, the bearing piece moves along the preset axis and also drives the at least two light-emitting areas to move, and the at least two light-emitting areas are sequentially positioned on the light path of the exciting light, and then the luminous zones on the exciting light path are sequentially excited, and the carrier moves along the preset axis to further adjust the proportion of each luminous zone in one frame image.

A light source device comprises an excitation light source and a color wheel assembly, wherein the color wheel assembly comprises a bearing part and at least two light emitting areas arranged on the outer surface of the bearing part, wherein each light emitting area is used for receiving exciting light and emitting corresponding color light, and the at least two light emitting areas emit at least two colors of light, the carrier being capable of rotating about and moving along a predetermined axis about which the carrier rotates, so that different positions of each light-emitting area are sequentially positioned on the light path of the exciting light, the bearing piece moves along the preset axis and also drives the at least two light-emitting areas to move, and the at least two light-emitting areas are sequentially positioned on the light path of the exciting light, and then the luminous zones on the exciting light path are sequentially excited, and the carrier moves along the preset axis to further adjust the proportion of each luminous zone in one frame image.

A display apparatus includes a light source device that emits light to a spatial light modulator that modulates light emitted from the light source device according to image data to generate image light. The light source device comprises an excitation light source and a color wheel assembly, the color wheel assembly comprises a bearing part and at least two light emitting areas arranged on the outer surface of the bearing part, wherein each light emitting area is used for receiving exciting light and emitting corresponding color light, and the at least two light emitting areas emit at least two colors of light, the carrier being capable of rotating about and moving along a predetermined axis about which the carrier rotates, so that different positions of each light-emitting area are sequentially positioned on the light path of the exciting light, the bearing piece moves along the preset axis and also drives the at least two light-emitting areas to move, and the at least two light-emitting areas are sequentially positioned on the light path of the exciting light, and then the luminous zones on the exciting light path are sequentially excited, and the carrier moves along the preset axis to further adjust the proportion of each luminous zone in one frame image.

Compared with the prior art, in the color wheel assembly, the light source device and the display equipment, the bearing piece rotates around the preset axis and also drives the at least two light emitting areas to rotate around the preset axis, so that different positions of each light emitting area are sequentially positioned on a light path where the exciting light is positioned, and the design is favorable for heat dissipation of the color wheel assembly; the bearing piece moves along the preset axis and also drives the at least two light emitting areas to move, so that the at least two light emitting areas are sequentially positioned on a light path where the exciting light is positioned, the color wheel assembly emits light with different colors in sequence, and the ratio of each light emitting area in one frame of image is adjusted through the movement of the bearing piece along the preset axis, so that the requirement of dynamically adjusting the ratio of each color of light of the existing light source device and display equipment is met.

Drawings

Fig. 1 to 3 are schematic diagrams illustrating the structure and the optical path principle of a display device according to a first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a color wheel assembly of a light source device of a display device according to a second embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a color wheel assembly of a light source device of a display device according to a third embodiment of the present invention.

Fig. 6 is a schematic configuration diagram of a display device according to a fourth embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a color wheel assembly of a light source device of a display apparatus according to a fifth embodiment of the present invention.

Fig. 8 is a structural diagram of a planar expansion of a light emitting region of the color wheel assembly of the light source device of the display device according to the sixth embodiment of the present invention.

Fig. 9 is a structural diagram of a planar expansion of a light emitting region of the color wheel assembly of the light source device of the display device according to the seventh embodiment of the present invention.

Description of the main elements

Display device

10, 20, 30, 40, 50

Light source devices

11, 21, 31, 41, 51

Spatial light modulator 12

Excitation light sources 13, 23

Color wheel assembly

14, 24, 34, 44, 54, 64, 74

The

carrier

141, 241, 341

Light emitting region 142, 442

Scattering regions 142a, B, 542a

Wavelength converting regions 142b, R, G, 142c, 142d, 642c, 642d, 742c, 742d

Predetermined axis A

First direction X

Mixed

light emitting regions

343, 543, 643

First sub-regions

343a, 543a, 643a

Second sub-regions

343b, 543b, 643b

Third sub-regions

343c, 543c, 643c

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

Referring to fig. 1 to 3, fig. 1 to 3 are schematic structural and optical path diagrams of a display device 10 according to a first embodiment of the present invention. The display device 10 includes a light source device 11 and a spatial light modulator 12, the light source device 11 emits light to the spatial light modulator 12, and the spatial light modulator modulates the light emitted by the light source device 11 according to image data to generate image light. The display device 10 may be a projection device, and the spatial light modulator 12 may be a DMD spatial light modulator, an LCD spatial light modulator, or an Lcos spatial light modulator, but not limited thereto.

The light source device 11 includes an excitation light source 13 and a color wheel assembly 14, the excitation light source 13 is configured to emit excitation light, the color wheel assembly 14 includes a carrier 141 and at least two light emitting regions 142 disposed on an outer surface of the carrier 141, where each light emitting region 142 is configured to receive the excitation light and emit light of a corresponding color, and the at least two light emitting regions 142 emit light of at least two colors, the light emitted by the at least two light emitting regions 142 of the color wheel assembly 14 is provided to the spatial light modulator 12 as the light emitted by the light source device 11, specifically, the light emitted by the color wheel assembly 14 may be provided to a light receiving region, and the light of the light receiving region may be provided to the spatial light modulator 12 directly or indirectly (for example, through a light relay system, a light homogenizing element, a light guiding element, and the like located in the light receiving region).

The carrier 141 can rotate around a predetermined axis a (e.g., rotate around the predetermined axis a) and move along the predetermined axis a, the rotation of the carrier 141 around the predetermined axis a further drives the at least two light emitting regions 142 to rotate around the predetermined axis a, so that different positions of each light emitting region 142 are sequentially located on the light path of the excitation light, the movement of the carrier 141 along the predetermined axis a further drives the at least two light emitting regions 142 to move in a first direction X in the same direction of the predetermined axis a, so that the at least two light emitting regions 142 are sequentially located on the light path of the excitation light, and further sequentially excite the light emitting regions 142 located on the light path of the excitation light, the color wheel assembly 14 sequentially emits different colors of light, and the ratio of the colors of light emitted by the color wheel assembly 14 in a unit period can be adjusted by the movement of the carrier 141 along the predetermined axis, i.e., adjusting the proportion of each light emitting region 142 in one frame image.

In this embodiment, the bearing 141 includes a cone, and the predetermined axis a is a central axis of the cone; each light emitting region 142 is arranged around the predetermined axis a on the outer surface of the carrier 141, wherein each light emitting region 142 may enclose a closed ring shape, but in a modified embodiment, the light emitting regions 142 may enclose a non-closed ring shape and may have spaced non-light emitting regions, and specifically, may be designed according to the actual needs of the user.

The at least two light emitting regions 142 include at least one scattering region 142a and at least one wavelength conversion region 142b, the scattering region 142a is configured to receive the excitation light and scatter and reflect the excitation light, the at least one wavelength conversion region 142b includes a wavelength conversion material, the at least one wavelength conversion region 142b is configured to receive the excitation light, generate stimulated light and reflect the stimulated light, and the excitation light and the stimulated light are different in color. It is understood that, in the present embodiment, the scattering region 142a reflects the excitation light, but in a modified embodiment, the scattering region 142a may also transmit the excitation light, and a guiding element may be further disposed to guide the transmitted excitation light, which is not described herein again.

In this embodiment, the excitation light is a first color light, such as blue excitation light, the excitation light source may be a laser light source, such as a laser light source emitting blue laser light, and the scattering region 142a may be further denoted by B.

The at least one wavelength conversion region 142b includes a first wavelength conversion region 142c and a second wavelength conversion region 142d, the scattering region 142a, the first wavelength conversion region 142c, and the second wavelength conversion region 142d are arranged substantially along the first direction X, the stimulated light includes a first stimulated light and a second stimulated light, the wavelength conversion material includes a first wavelength conversion material disposed in the first wavelength conversion region 142c and a second wavelength conversion material disposed in the second wavelength conversion region 142d, the first wavelength conversion region 142c is configured to receive the stimulated light and generate the first stimulated light and reflect the first stimulated light, and the second wavelength conversion region 142d is configured to receive the stimulated light and generate the second stimulated light and reflect the second stimulated light. In this embodiment, the first excited light is a second color light, such as green fluorescence, and the second excited light is a third color light, such as red fluorescence, wherein the first color, the second color and the third color are different from each other, the first wavelength conversion material may be a green fluorescence material, and the second wavelength conversion material may be a red fluorescence material, so that the first wavelength conversion region 142c and the second wavelength conversion region 142d may also be respectively labeled as G and R.

When the light source device 11 is in operation, the excitation light source 13 emits excitation light, referring to fig. 1, in a red light emitting period in a unit cycle (e.g., in a color wheel cycle), the position of the supporting member 141 is controlled (e.g., the supporting member 141 is controlled to move along the predetermined axis a), so that the second wavelength conversion region R is located on the light path of the excitation light, the second wavelength conversion region R receives the excitation light and generates a second stimulated light, and reflects the second stimulated light to emit the third color light, i.e., emit red light, and the spatial light modulator modulates the red light according to image data in the red light emitting period to generate red image light. It is understood that the bearing member 141 can also rotate around the predetermined axis a, such that the positions of the annular second wavelength conversion region R are sequentially located on the optical path of the excitation light, thereby facilitating the heat dissipation of the second wavelength conversion region R of the color wheel assembly 14.

Further, referring to fig. 2, in a green light emitting period in a unit cycle (e.g., in a color wheel cycle), the supporting member 141 moves along the predetermined axis a (e.g., moves to the left along the predetermined axis a on the basis of fig. 1) so that the first wavelength conversion region G is located on the optical path of the excitation light, so that the first wavelength conversion region G receives the excitation light and generates a first stimulated light, and reflects the first stimulated light to emit the second color light, i.e., green light, and the spatial light modulator modulates the green light according to image data in the green light emitting period to generate green image light. It is understood that the bearing member 141 can also rotate around the predetermined axis a, such that the positions of the annular first wavelength conversion region G are sequentially located on the optical path of the excitation light, thereby facilitating the heat dissipation of the first wavelength conversion region G of the color wheel assembly 14.

Further, referring to fig. 3, in a blue light emitting period in a unit cycle (e.g., in a color wheel cycle), the position of the carrier 141 is controlled such that the scattering region B is located on a light path where the excitation light is located (e.g., moving to the left along the predetermined axis a on the basis of fig. 2), so that the scattering region B receives the excitation light and reflects the excitation light to emit the first color light, i.e., blue light, and the spatial light modulator modulates the blue light according to image data in the blue light emitting period to generate blue image light. It is understood that the bearing member 141 can also rotate around the predetermined axis a, such that each position of the annular scattering region B is sequentially located on the light path of the excitation light, thereby facilitating the heat dissipation of the scattering region B of the color wheel assembly 14.

It can be understood that, if the last light-emitting period of the previous color wheel cycle is a blue light-emitting period, and the first light-emitting period of the next color wheel cycle is a red light-emitting period, that is, different light-emitting periods are determined, after the last light-emitting period of the previous color wheel cycle is ended, the carrier 141 needs to move along the predetermined axis a (for example, move to the right side along the predetermined axis a on the basis of fig. 3) so that the scattering area (i.e., the corresponding light-emitting area) is located on the light path where the excitation light is located when entering the first light-emitting period of the next color wheel cycle again.

It is understood that, if the color wheel assembly 14 emits a certain color light, such as red light, for a long time, the corresponding light emitting region (e.g., the second wavelength conversion region R) of the color wheel assembly 14 can be controlled to be located on the light path of the excitation light for a long time, i.e., the color wheel assembly 14 is kept not rotating or only rotating along the predetermined axis a, but the color wheel assembly 14 does not move along the predetermined axis a relative to the excitation light source 13.

Compared with the prior art, in the color wheel assembly 14, the light source device 11 and the display device 10 of the present invention, the bearing 141 rotates around the predetermined axis a and also drives the at least two light emitting areas 142 to rotate around the predetermined axis, so that different positions of each light emitting area 142 are sequentially located on the light path of the excitation light, and this design is beneficial to heat dissipation of the color wheel assembly 14; the bearing element 141 moves along the predetermined axis a and also drives the at least two light emitting areas 142 to move, so that the at least two light emitting areas 142 are sequentially located on the light path of the excitation light, and further sequentially excite the light emitting areas 142 located on the light path of the excitation light, the color wheel assembly 14 sequentially emits light of different colors, and the ratio of the light of various colors emitted by the color wheel assembly 14 in a unit period is also controlled by controlling the movement of the bearing element 141 along the predetermined axis a, that is, the ratio of each light emitting area 142 in one frame of image is controlled, thereby meeting the requirement of dynamically adjusting the ratio of the light of various colors in the conventional light source device 11 and display apparatus 10.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a color wheel assembly of a light source device of a display device according to a second embodiment of the present invention. The display device 20 of the present invention has substantially the same structure and basic principle as the display device 10 of the first embodiment, and the main difference between the two is that the number of the scattering regions B, the first wavelength conversion regions G and the second wavelength conversion regions R of the color wheel assembly 24 is at least two and arranged in a predetermined sequence, wherein the light emitting colors of any two adjacent regions are different. The number of the scattering regions B, the number of the first wavelength conversion regions G, and the number of the second wavelength conversion regions R may be equal. Specifically, in the second embodiment, the preset sequence is a cyclic sequence of the scattering region B, the first wavelength conversion region G, and the second wavelength conversion region R, such as a cyclic arrangement in the order of B, G, R from the top to the bottom of the cone. This design may facilitate the transition between different colors, e.g., from light-emitting region R to light-emitting region B without passing through light-emitting region G, due to more than two light-emitting regions R, G, B of each color.

For example, in one embodiment, if the current time interval is a blue light emitting time interval in which the light emitting regions B emit blue light, and the next time interval needs to enter a red light emitting time interval, the supporting member 241 may be controlled to move to the left side along the predetermined axis a by a distance corresponding to one light emitting region; if the current time interval is a blue light emitting time interval in which the light emitting region B emits blue light, and the next time interval needs to enter a green light emitting time interval, the supporting member 241 may be controlled to move to the right side along the predetermined axis a by a distance corresponding to one light emitting region.

It is understood that, in the color wheel assembly 24, if the color wheel assembly 24 emits a certain color light, such as red light, for a long time, the corresponding light emitting region (such as the second wavelength conversion region R) of the color wheel assembly 24 may be controlled to be located on the light path of the excitation light for a long time, that is, the color wheel assembly 24 is kept not rotating or only rotating along the predetermined axis a, but the color wheel assembly 24 does not move along the predetermined axis a relative to the excitation light source.

Further, if it is required that the light source device 21 circularly emits blue light, red light, green light, and the percentages of the blue light, the red light, and the green light are 50%, 25%, and 25% in sequence, the bearing 241 of the color wheel assembly 24 may be moved such that B, R, B, G … … is sequentially and circularly located on the light path where the excitation light is located according to the cyclic sequence of 1- >2- >1- >3 … …, wherein the moving speed of the bearing 241 of the color wheel assembly 24 along the predetermined axis a may be uniform.

Further, if the light source device 22 is required to cyclically emit the blue light, the red light, the green light, and the percentages of the blue light, the red light, and the green light are 33.33%, and 33.33% in sequence, the carrier 241 of the color wheel assembly 24 may be moved such that B, R, G, B, R, G … … is sequentially and cyclically located on the light path of the excitation light according to the cyclic sequence of 1- >2- >3- >1- >2- >3 … …, wherein the moving speed of the carrier 241 of the color wheel assembly 24 along the predetermined axis a may also be uniform.

However, it is understood that in the first and second embodiments, in the cycle sequence of 1- >2- >3- >1- >2- >3 … …, a jump skipping over the middle light-emitting region B needs to occur during the movement of 2- >3 (i.e. light-emitting region R- > G, and the red light is converted into green light).

To further solve the problem of skipping the middle light-emitting region B during the conversion of red light into green light in the above-mentioned first and second embodiments, the present invention further provides a third embodiment, please refer to fig. 5, where fig. 5 is a schematic structural diagram of the color wheel assembly 34 of the light source device 31 of the display device 30 according to the third embodiment of the present invention. The structure of the display device 30 is substantially the same as the basic principle of the display device 20 of the second embodiment, and the main difference between the two embodiments is that one of the light emitting regions in the color wheel assembly 34 is a mixed light emitting region 343 (e.g., one of the scattering regions B is set as the mixed light emitting region), the mixed light emitting region 343 includes a first sub-region 343a, a second sub-region 343B and a third sub-region 343c, the first sub-region 343a is used for receiving the excitation light and reflecting the excitation light, the second sub-region 343B has the first wavelength conversion material and is used for receiving the excitation light and generating a first stimulated light and reflecting the first stimulated light, the third sub-region 343c has the second wavelength conversion material and is used for receiving the excitation light and generating a second stimulated light and reflecting the second stimulated light, the first sub-region 343a, the second sub-region 343, The second sub-region 343b and the third sub-region 343c are sequentially arranged in a direction perpendicular to the predetermined axis a, such that the first sub-region 343a, the second sub-region 343b, and the third sub-region 343c of the light-emitting mixture region 343 are sequentially located on the optical path of the excitation light when the carrier 341 rotates along the predetermined axis a. The first sub-region 343a, the second sub-region 343b, and the third sub-region 343c have the same area and respectively occupy 1/3 of the entire mixed light-emitting region 343.

In the third embodiment, the mixed light emitting region 343 is disposed, so that the R- > G, that is, the red light can transition through the mixed light emitting region 343 in the process of converting into green light, and the situation of skipping the large jump of the middle light emitting region B in the first embodiment and the second embodiment is effectively solved, so that the color wheel assembly 34 of the third embodiment can convert and transition various colors of light more naturally.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a color wheel assembly 44 of a light source device 41 of a display device 40 according to a fourth embodiment of the present invention. The display apparatus 40 of the present invention has substantially the same structure and basic principle as the display apparatus 10 of the first embodiment, and the main difference between them is that in the fourth embodiment, the carrier 441 is a cylinder, and the predetermined axis a is the central axis of the cylinder.

It is understood that the operating principle of the excitation light source 43 and the color wheel assembly 44 of the light source device 41 of the display apparatus 40 is substantially the same as that of the excitation light source 43 and the color wheel assembly 44 of the light source device 41 of the display apparatus 40 of the first embodiment, and thus, the detailed description thereof is omitted.

It should be noted that, in the process of converting R- > G, that is, the red light into the green light, the display device 40 may also have the situation of skipping the middle light-emitting region B in the second embodiment, in order to further solve the problem of skipping the middle light-emitting region B in the movement of R- > G in the embodiment shown in fig. 6, the present invention further provides a fifth embodiment, please refer to fig. 7, and fig. 7 is a schematic structural diagram of the color wheel assembly 54 of the light source device 51 of the display device 50 according to the fifth embodiment of the present invention. The display device 50 of the fifth embodiment differs from the display device 40 of the fourth embodiment mainly in that: the middle light-emitting region is further disposed as a mixed light-emitting region 543, that is, the mixed light-emitting region 543 includes a first sub-region 543a, a second sub-region 543b and a third sub-region 543c, the first sub-region 543a is configured to receive the excitation light and reflect the excitation light, the second sub-region 543b has the first wavelength conversion material and is configured to receive the excitation light and generate a first stimulated light and reflect the first stimulated light, the third sub-region 543c has the second wavelength conversion material and is configured to receive the excitation light and generate a second stimulated light and reflect the second stimulated light, the first sub-region 543a, the second sub-region b and the third sub-region 543c are sequentially arranged in a direction perpendicular to the predetermined axis a, so that when the carrier 541 rotates along the predetermined axis a, the first sub-region 543a, the second sub-region 543b and the third sub-region 543c of the mixed light-emitting region 543, The second sub-region 543b and the third sub-region 543c are sequentially located on the light path of the excitation light. The areas of the first sub-region 543a, the second sub-region 543b and the third sub-region 543c are the same, and respectively occupy 1/3 of the entire mixed light emitting region 543.

In the fifth embodiment, the mixed light emitting region 543 is disposed, so that the R- > G, that is, the red light can transit through the mixed light emitting region 543 in the process of converting into the green light, thereby effectively solving the problem of skipping the large jump of the middle light emitting region B in the fourth embodiment, and therefore, the color wheel assembly 54 of the fifth embodiment has natural transition and conversion of various colors of light.

Referring to fig. 8, fig. 8 is a schematic structural diagram of a planar expansion of a light emitting region of the color wheel assembly 64 of the light source device of the display device according to the sixth embodiment of the present invention. The display device of the sixth embodiment differs from the display device 50 of the fifth embodiment mainly in that: the color wheel assembly 64 has at least two adjacently disposed mixing light emitting areas 643, and the first sub-area 643a, the second sub-area 643b and the third sub-area 643c of the two adjacently disposed mixing light emitting areas 643 are arranged in the same sequence but are arranged in a staggered manner, so that when the first sub-area 643a of one mixing light emitting area 643 is adjacent to at least two sub-areas (such as 643b, 643c) of an adjacent mixing light emitting area 643, when the color of the emergent light needs to be changed when the color wheel assembly 64 rotates and moves along the predetermined axis a, the other colors can be smoothly switched as long as the color wheel assembly moves along the predetermined axis a.

Specifically, in the sixth embodiment, the color wheel assembly 64 includes three adjacent mixed light emitting areas 643, a first wavelength converting area 642c located on one side of the three adjacent mixed light emitting areas 643, and a second wavelength converting area 642d located on the other side of the three adjacent mixed light emitting areas 643, wherein both the first wavelength converting area 642c and the second wavelength converting area 642d have a circular cross section and are annularly disposed on two sides of the three mixed light emitting areas 643.

When the color wheel assembly 64 works, when any one of the mixed light emitting regions 643 is located on the light path of the excitation light, the duty ratio of the first, second, and third color lights emitted by the color wheel assembly 64 is 33.33%, and when the first, second, and third color lights with different duty ratios need to be obtained (if the proportion of the second and third color lights needs to be increased), the first wavelength conversion region 642c and the second wavelength conversion region 642d can be located on the light path of the excitation light by controlling the carrier of the color wheel assembly 64 to move along the predetermined axis a, so as to increase the proportion of the second color light and/or the third color light. In an alternative embodiment, the area ratio of the sub-areas 643a, 643b, and 643c of at least two mixing light emitting areas 643 of the color wheel assembly may be different, the area ratio of the sub-areas 643a, 643b, and 643c of one mixing light emitting area 643 may be 1:1:1, the area ratio of the sub-areas 643a, 643b, and 643c of another mixing light emitting area 643 may be 1:2:1, or other ratios, so that when the light emitting ratio of each color of the color wheel assembly needs to be changed, the color wheel assembly only needs to be moved along the predetermined axis a, so that the different mixing light emitting areas 643 are located on the light path of the excitation light, and different light emitting ratios of each color can be obtained.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a planar expansion of a light emitting region of the color wheel assembly 74 of the light source device of the display device according to the seventh embodiment of the present invention. The display device of the seventh embodiment is similar in principle to the display device of the sixth embodiment, and the main difference is that: the supporting member of the color wheel assembly 74 is a cone (as may be the supporting member 141 of the first embodiment), but the structures and positions of the light mixing region 743, the first wavelength conversion region 742c, and the second wavelength conversion region 742d are substantially the same.

When the color wheel assembly 74 works, when any one of the mixed light emitting regions 743 is located on the light path of the excitation light, the color wheel assembly 74 emits the first, second, and third color lights with fixed ratios, and when the first, second, and third color lights with different duty ratios need to be obtained (if the ratio of the second, third color lights needs to be increased), the first wavelength conversion region 742c and the second wavelength conversion region 742d can be located on the light path of the excitation light by controlling the carrying member 741 of the color wheel assembly 74 to move along the predetermined axis a, so that the ratio of the second color light and/or the third color light is increased.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A color wheel assembly, comprising: the color wheel assembly comprises a bearing member and at least two luminous zones arranged on the outer surface of the bearing member, wherein each luminous zone is used for receiving exciting light and emitting corresponding color light, the at least two luminous zones emit at least two colors of light, the bearing member can rotate around a preset axis and move along the preset axis,

the bearing piece rotates around the preset axis, so that different positions of each luminous zone are sequentially positioned on the light path of the exciting light,

the bearing element moves along the preset axis and also drives the at least two light emitting areas to move, so that the at least two light emitting areas are sequentially located on the light path of the exciting light, the light emitting areas located on the light path of the exciting light are sequentially excited, and the proportion of each light emitting area in one frame of image can be adjusted by moving the bearing element along the preset axis.

2. The color wheel assembly as claimed in claim 1 wherein: the at least two light emitting areas comprise at least one scattering area and at least one wavelength conversion area, the scattering area is used for receiving the exciting light and scattering the exciting light, the at least one wavelength conversion area comprises wavelength conversion materials, and the at least one wavelength conversion area is used for receiving the exciting light, generating excited light and emitting the excited light.

3. The color wheel assembly as claimed in claim 2 wherein: the at least one wavelength conversion zone comprises a first wavelength conversion zone and a second wavelength conversion zone, the exciting light is first color light, the wavelength conversion material comprises a first wavelength conversion material arranged in the first wavelength conversion zone and a second wavelength conversion material arranged in the second wavelength conversion zone, the excited light comprises first excited light and second excited light, the first excited light is second color light, the second excited light is third color light, the first color, the second color and the third color are different, the first wavelength conversion zone is used for receiving the exciting light, generating the first excited light and reflecting the first excited light, and the second wavelength conversion zone is used for receiving the exciting light, generating the second excited light and reflecting the second excited light.

4. The color wheel assembly as claimed in claim 3 wherein: the scattering region, the first wavelength conversion region and the second wavelength conversion region are arranged according to a preset sequence, wherein the light emitting colors of any two adjacent regions are different.

5. The color wheel assembly as claimed in claim 4 wherein: the number of the scattering regions and/or the first wavelength conversion regions and the second wavelength conversion regions is more than two.

6. The color wheel assembly as claimed in claim 3 wherein: at least one of the scattering region, the first wavelength conversion region and the second wavelength conversion region is a mixed light emitting region, the mixed light emitting region includes at least two of a first sub-region, a second sub-region and a third sub-region, the first sub-region is used for receiving the excitation light and scattering the excitation light, the second sub-region is provided with the first wavelength conversion material and is used for receiving the excitation light and generating the first stimulated light and emitting the first stimulated light, the third sub-region is provided with the second wavelength conversion material and is used for receiving the excitation light and generating the second stimulated light and emitting the second stimulated light, and the sub-regions in the mixed light emitting region are sequentially located on a light path where the excitation light is located when the bearing member rotates along the predetermined axis.

7. The color wheel assembly as claimed in claim 6 wherein: the color wheel assembly comprises at least two adjacent mixed light emitting areas, and the sub-areas of the two adjacent mixed light emitting areas are arranged in the same sub-area arrangement sequence but in the same color in a staggered manner.

8. The color wheel assembly as claimed in claim 7 wherein: the color wheel assembly comprises three adjacent mixed light emitting areas, a first wavelength conversion area and a second wavelength conversion area, wherein the first wavelength conversion area is arranged on one side of the three adjacent mixed light emitting areas in an annular mode, and the second wavelength conversion area is arranged on the other side of the three adjacent mixed light emitting areas in an annular mode.

9. The color wheel assembly as claimed in claim 1 wherein: the bearing part comprises a cylinder or a cone, and the predetermined axis is a central axis of the cylinder or the cone; each light emitting area is arranged on the outer surface of the bearing part.

10. A light source device, comprising an excitation light source and a color wheel assembly, wherein the excitation light source is configured to emit excitation light to the color wheel assembly, and the light source device is characterized in that: the color wheel assembly employs any of claims 1-9.

11. A display apparatus comprising a light source device and a spatial light modulator, the light source device emitting light to the spatial light modulator, the spatial light modulator modulating the light emitted by the light source device according to image data to generate image light, characterized in that: the light source device according to claim 10 is used as the light source device.