Display system and control method for display system

Abstract

The present invention relates to the technical field of display. Disclosed are a display system and a control method for the display system. According to the present invention, a second light source which does not pass through a wavelength conversion device is arranged in a light source device, and second light generated by the second light source at least comprises light of one primary color, so that the output time of the primary color light can be independently adjusted, and the output time of the primary color light may overlap or not overlap the output time of light generated by the wavelength conversion device, thereby achieving a target white brightness mode in the display system having the wavelength conversion device, and achieving compatibility with a high pure color brightness mode of the three primary colors.

Description

Display system and display system control method Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display system and a control method for the display system. Background Art

[0002] Projectors are widely used in various situations, such as office briefings, film and television playback, and installation art. Among the current mainstream projection technologies, laser plus fluorescent light source devices have advantages in terms of power consumption, brightness, color gamut, and other aspects. However, in current laser plus fluorescent light source devices, the duty cycle (duty) of the red, green, and blue light sources depends on the phosphor partitions coated on the wavelength conversion device. Once the phosphor partitions are fixed, the duty cycle is fixed. This means that when adjusting the white balance color point of the light source device, it cannot be adjusted by adjusting the duty cycle, but can only be adjusted by reducing the current, which often greatly reduces the brightness and leads to large differences in the brightness of mass-produced optical machines. At the same time, because the duty cycle cannot be changed, it is impossible to simultaneously be compatible with the high-brightness pure color mode of the three primary colors of red, green, and blue and the high-brightness mode of white. These two modes each have their own advantages, but due to the limitations of the wavelength conversion device partitions, they cannot be selected according to the user's actual usage.

[0003] Summary of the Invention

[0004] In view of this, the present invention provides a display system and a control method for the display system, which can realize a target white brightness mode in a display system with a wavelength conversion device and is compatible with a high brightness mode of pure colors of three primary colors.

[0005] In a first aspect, the present invention provides a display system, wherein the display mode of the display system includes a first mode, and the display system includes a light source device,

[0006] If the target display mode of the display system is the first mode, the light source device is configured to generate four lights or five lights in a time sequence, the four lights or the five lights being composed of a first light and a second light, the four lights comprising a first primary color light, a second primary color light, a third primary color light, and a first mixed color light, and the five lights comprising a first primary color light, a second primary color light, a third primary color light, a first mixed color light, and a second mixed color light, wherein a spectrum of the first mixed color light comprises a spectrum of the first primary color light and a spectrum of the second primary color light, and a spectrum of the second mixed color light comprises a spectrum of the second primary color light and a spectrum of the third primary color light;

[0007] The light source device comprises:

[0008] an excitation light source, for generating excitation light;

[0009] a wavelength conversion device, configured to generate first light under the irradiation of the excitation light, wherein the first light includes one or more sub-lights, and the spectrum of the sub-lights includes the spectrum of any one of the first primary color light, the second primary color light, and the third primary color light;

[0010] A second light source is used to generate a second light. When the light source device is used to generate four kinds of light in a time sequence, the second light includes at least one of the first primary color light and the second primary color light. When the light source device is used to generate five kinds of light in a time sequence, the second light includes at least the second primary color light.

[0011] In a possible implementation, the display mode of the display system further includes a second mode.

[0012] If the target display mode of the display system is the second mode, the light source device is configured to generate three types of light in a time sequence, where the three types of light include a first primary color light, a second primary color light, and a third primary color light.

[0013] In a possible implementation, the first light includes a third sub-light, and a spectrum of the third sub-light includes a spectrum of one light in the second light.

[0014] In one possible implementation,

[0015] When the light source device is used to generate four kinds of light in sequence, the second light source includes a first light-emitting element and a second light-emitting element, the first light-emitting element is used to generate one of the first primary color light and the second primary color light, and the second light-emitting element is used to generate the other of the first primary color light and the second primary color light and one of the third primary color light; the wavelength conversion device includes a first area, the first area is used to generate light with a spectrum including the other of the first primary color light and the second primary color light and the other of the third primary color light under the irradiation of the excitation light; or,

[0016] The second light source includes a first light-emitting element configured to generate one of a first primary color light and a second primary color light; the wavelength conversion device includes a first region and a second region, the second region configured to generate light having a spectrum including the other of the first and second primary colors and one of the third primary colors under the illumination of the excitation light, and the first region configured to generate light having a spectrum including the other of the first and second primary colors and the other of the third primary colors under the illumination of the excitation light;

[0017] When the light source device is used to generate five kinds of light in a time sequence, the second light source includes a third light-emitting element and a fourth light-emitting element, the third light-emitting element is used to generate a second primary color light, and the second light-emitting element is used to generate one of the first primary color light and the third primary color light; the wavelength conversion device includes a third region, and the third region is used to generate light containing a spectrum of the other of the first primary color light and the third primary color light under the irradiation of the excitation light; or,

[0018] The second light source includes a third light-emitting element, which is used to generate a second primary color light; the wavelength conversion device includes a third region and a fourth region, the fourth region is used to generate light containing a spectrum of one of the first primary color light and the third primary color light under the irradiation of the excitation light, and the third region is used to generate light containing a spectrum of the other of the first primary color light and the third primary color light under the irradiation of the excitation light.

[0019] In one possible implementation, when the wavelength conversion device includes a first zone and a second zone, the sum of the distribution angles of the first zone and the second zone is 360 degrees; when the wavelength conversion device includes a third zone and a fourth zone, the sum of the distribution angles of the third zone and the fourth zone is 360 degrees.

[0020] In one possible implementation, when the light source device is used to generate four types of light in a time sequence, and the second light source includes a first light-emitting element and a second light-emitting element, the wavelength conversion device further includes a fifth region, wherein the fifth region is used to generate light having a spectrum including one of the first primary color light and the second primary color light under the irradiation of the excitation light, and the sum of the distribution angles of the first region and the fifth region is 360 degrees; or,

[0021] When the light source device is used to generate five types of light in sequence and the second light source includes a third light-emitting element and a fourth light-emitting element, the wavelength conversion device also includes a sixth zone, and the sixth zone is used to generate light containing a spectrum of the second primary color light under the irradiation of the excitation light, and the sum of the distribution angles of the third zone and the sixth zone is 360 degrees.

[0022] In one possible implementation, the distribution angle of the second area is greater than or equal to the distribution angle corresponding to the duty ratio when the other of the first primary color light and the second primary color light and one of the third primary color light meet the target white balance; the distribution angle of the first area is greater than or equal to the distribution angle corresponding to the duty ratio when the other of the first primary color light and the second primary color light and the other of the third primary color light meet the target white balance;

[0023] The distribution angle of the fourth zone is greater than or equal to the distribution angle corresponding to the duty cycle when one of the first primary light and the third primary light meets the target white balance; the distribution angle of the third zone is greater than or equal to the distribution angle corresponding to the duty cycle when the other of the first primary light and the third primary light meets the target white balance.

[0024] In a possible implementation, the display system further includes:

[0025] A synchronization module is connected to the excitation light source, the wavelength conversion device and the second light source, and is used to control the switching of the excitation light source and / or the second light source, so that when the light source device is used to generate four kinds of light in a time sequence, the output time of the first primary color light and the second primary color light generated by the light source device partially overlaps to generate the first mixed color light; when the light source device is used to generate five kinds of light in a time sequence, the output time of the first primary color light and the second primary color light generated by the light source device partially overlaps to generate the first mixed color light, and the output time of the second primary color light and the third primary color light generated by the light source device partially overlaps to generate the second mixed color light.

[0026] In one possible implementation, the synchronization module is also used to adjust the switching time of the excitation light source and / or the second light source to adjust the duty cycle of various lights generated by the light source device when the target display mode of the display system changes from the first mode to the second mode or from the second mode to the first mode, so that the light generated by the light source device meets the target white balance.

[0027] In one possible implementation, the wavelength conversion device includes:

[0028] a substrate, configured to receive the excitation light;

[0029] a motor, for driving the substrate to move;

[0030] a position identification element, located at a preset position of the substrate or the motor;

[0031] The position detection element is used to generate a position signal when the position identification element is detected, and the position signal is used by the synchronization device to control the switching of the excitation light source and / or the second light source.

[0032] In a possible implementation, the display system further includes a storage unit, a control module, and a light modulation device, wherein:

[0033] The storage unit includes a first memory and a second memory, or includes a third memory, the first memory stores a first configuration file, and the second memory stores a second configuration file; the third memory stores the first configuration file and the second configuration file, or stores the third configuration file, the first configuration file is used to implement the first mode, the second configuration file is used to implement the second mode, and the third configuration file is used to implement the first mode and the second mode;

[0034] The control module is connected to the storage unit and the light modulation device, and is configured to load the first configuration file from the first memory or the third memory or load the third configuration file from the third memory to control the light modulation device to implement the first mode if the target display mode of the display system is the first mode; and load the second configuration file from the second memory or the third memory or load the third configuration file from the third memory to control the light modulation device to implement the second mode if the target display mode of the display system is the second mode;

[0035] The light modulation device is used to modulate the light generated by the light source device.

[0036] In a possible implementation, the display system further includes:

[0037] The mode determination module is used to determine the target display mode of the display system.

[0038] In a second aspect, the present invention provides a control method for a display system, wherein the display mode of the display system includes a first mode, the display system includes a light source device, and the light source device includes:

[0039] an excitation light source, for generating excitation light;

[0040] a wavelength conversion device, configured to generate first light under the irradiation of the excitation light, wherein the first light includes one or more sub-lights, and the spectrum of the sub-lights includes the spectrum of any one of the first primary color light, the second primary color light, and the third primary color light;

[0041] a second light source for generating a second light, wherein the second light comprises at least a second primary color light;

[0042] The control method includes:

[0043] If the target display mode of the display system is the first mode, the light source device is controlled to generate four lights or five lights in a time sequence, and the four lights or the five lights are composed of a first light and a second light, the four lights include a first primary light, a second primary light, a third primary light and a first mixed light, and the five lights include a first primary light, a second primary light, a third primary light, a first mixed light and a second mixed light, wherein the spectrum of the first mixed light includes the spectrum of the first primary light and the spectrum of the second primary light, and the spectrum of the second mixed light includes the spectrum of the second primary light and the spectrum of the third primary light.

[0044] In a possible implementation, the display mode of the display system further includes a second mode, and the control method further includes:

[0045] If the target display mode of the display system is the second mode, the light source device is controlled to generate three kinds of light in a time sequence, where the three kinds of light include a first primary color light, a second primary color light, and a third primary color light.

[0046] In one possible implementation, the wavelength conversion device includes two regions, one of the two regions is used to generate a first sub-light under the illumination of the excitation light, and the other of the two regions is used to generate a second sub-light under the illumination of the excitation light, the spectrum of the first sub-light includes the spectrum of one of the first primary light and the third primary light, and the spectrum of the second sub-light includes the spectrum of the other of the first primary light and the third primary light or the spectrum of the second primary light, and the control method further includes:

[0047] The distribution angles of the respective zones on the wavelength conversion device are determined based on the luminous conditions of all light sources in the light source device and the target white balance, such that the distribution angle of one zone is greater than or equal to the distribution angle corresponding to the duty cycle when one of the first primary light and the third primary light satisfies the target white balance, and the distribution angle of the other zone is greater than or equal to the distribution angle corresponding to the duty cycle when the other of the first primary light and the third primary light or the second primary light satisfies the target white balance.

[0048] In a possible implementation, the control method further includes:

[0049] Control the switches of the excitation light source and the second light source so that when the light source device is used to generate four kinds of light in sequence, the output times of the first primary color light and the second primary color light generated by the light source device partially overlap to generate the first mixed color light; when the light source device is used to generate five kinds of light in sequence, the output times of the first primary color light and the second primary color light generated by the light source device partially overlap to generate the first mixed color light, and the output times of the second primary color light and the third primary color light generated by the light source device partially overlap to generate the second mixed color light.

[0050] In a possible implementation, the control method further includes:

[0051] Determine the target display mode of the display system. When the target display mode of the display system changes from the first mode to the second mode or from the second mode to the first mode, adjust the switching time of the excitation light source and / or the second light source to adjust the duty cycle of various lights generated by the light source device so that the light generated by the light source device meets the target white balance.

[0052] In a possible implementation, the display system further includes a storage unit and a light modulation device, wherein:

[0053] The storage unit includes a first memory and a second memory, or includes a third memory, the first memory stores a first configuration file, and the second memory stores a second configuration file; the third memory stores the first configuration file and the second configuration file, or stores the third configuration file, the first configuration file is used to implement the first mode, the second configuration file is used to implement the second mode, and the third configuration file is used to implement the first mode and the second mode;

[0054] The light modulation device is used to modulate the light generated by the light source device;

[0055] The control method further includes:

[0056] If the target display mode of the display system is the first mode, the first configuration file is loaded from the first memory or the third memory, or the third configuration file is loaded from the third memory to control the light modulation device to implement the first mode; if the target display mode of the display system is the second mode, the second configuration file is loaded from the second memory or the third memory, or the third configuration file is loaded from the third memory to control the light modulation device to implement the second mode.

[0057] The present invention arranges a second light source in the light source device that does not pass through the wavelength conversion device. The second light generated by the second light source includes at least one primary color light, so that the output time of the primary color light can be adjusted separately. The output time of the primary color light can overlap or not overlap with the output time of the light generated by the wavelength conversion device, thereby realizing a target white brightness mode in a display system with a wavelength conversion device and being compatible with a mode with high pure color brightness of the three primary colors. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] FIG1 is a schematic diagram of functional modules of a display device provided by an embodiment of the present invention;

[0059] FIG2 is a schematic structural diagram of a display device provided by an embodiment of the present invention;

[0060] FIG3 is a schematic structural diagram of a light source device provided by an embodiment of the present invention;

[0061] FIG4 is a schematic structural diagram of another light source device provided by an embodiment of the present invention;

[0062] 5 to 8 are schematic structural diagrams of wavelength conversion devices provided in embodiments of the present invention;

[0063] FIG9 is a timing diagram of a light source device according to an embodiment of the present invention outputting three types of light;

[0064] FIG10 is a timing diagram of a light source device provided by an embodiment of the present invention outputting five kinds of light. DETAILED DESCRIPTION

[0065] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the embodiments described are only a part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Although the disclosure in the present invention is introduced according to one or more exemplary examples, it should be understood that each aspect of these disclosures can also constitute a complete technical solution independently. In the absence of conflict, the features in the following embodiments and embodiments can be combined with each other.

[0066] In the present invention, in order to facilitate the clear description of the technical solutions of the embodiments of the present invention, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order. They are only used to illustrate and distinguish the objects to be described. There is no distinction in order, nor do they represent a special limitation on the number of devices or messages in the embodiments of the present invention, and they cannot constitute any limitation on the embodiments of the present invention. "Multiple" means two or more, and words such as "include" or "comprising" mean that the element or object appearing before the word includes the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0067] In order to fully understand the present invention, a detailed description will be provided below to illustrate the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0068] FIG1 is a schematic diagram of the functional modules of a display device provided by an embodiment of the present invention. As shown in FIG1 , the display device includes an image processor 101 and an optical engine 102.

[0069] Image processor 101 may be a microcontroller, a dedicated image processing chip, or the like. The microcontroller may be an ARM chip, a microcontroller unit (MCU), or the like. The dedicated image processing chip may be an image signal processor (ISP), a graphics processing unit (GPU), or an embedded neural network processing unit (NPU). Image processor 101 may be used for video decoding, image quality processing, and the like.

[0070] The optical engine 102 may include a driver chip, a light modulator, and a light source. The light source may include a laser, LED, fluorescent, or UV light source. The light modulator may be a digital micromirror device (DMD), a liquid crystal display (LCD), or a liquid crystal on silicon (LCOS) device, and is used to modulate the light from the light source to produce image light. The driver chip corresponds to the light modulator. For example, the DMD can be driven by a digital light processing (DLP). The optical engine 102 is used to project the image to be projected onto a projection screen.

[0071] In some embodiments, the display device further includes a central controller 103 with one or more processing cores. This central controller can be a CPU, ARM, MCU, or other controller. Central controller 103 is the control center of the display device, connecting various components of the entire display device using various interfaces and circuits. It can run or execute software programs and / or operating systems stored in storage module 104, as well as access data stored in storage module 104. Alternatively, image processor 101 and central controller 103 can be integrated into a single processor.

[0072] In some embodiments, the display device further includes a storage module 104 of one or more computer-readable storage media, an input module 105, a communication module 106, a power supply 107, and other components. Those skilled in the art will appreciate that the display device structure shown in FIG1 does not limit the display device, and may include more or fewer components than shown, or combine certain components, or arrange the components differently. Among them:

[0073] The storage module 104 can be used to store software programs and operating systems. The central controller 103 executes various functional applications and data processing by running the software programs and operating systems stored in the storage module 104. The storage module 104 can mainly include a program storage area and a data storage area. The program storage area can store the operating system, at least one application required for a function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created based on the use of the display device, etc. In addition, the storage module 104 can include a high-speed random access memory and a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. Accordingly, the storage module 104 can also include a memory controller to provide the central controller 103 with access to the storage module 104.

[0074] The display device may further include an input module 105, which may be configured to receive input digital or character information and generate remote control, keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0075] The display device may also include a communication module 106. In some embodiments, the communication module 106 may include a wireless module. The display device may perform short-range wireless transmission via the wireless module of the communication module 106, thereby providing the user with wireless broadband Internet access. For example, the communication module 106 may be used to help the user access streaming media, etc.

[0076] The display device also includes a power supply 107 for supplying power to various components. In some embodiments, the power supply 107 can be logically connected to the central controller 103 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The power supply 107 can also include one or more DC or AC power supplies, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and other arbitrary components.

[0077] Figure 2 is a schematic diagram of the structure of a display device provided by an embodiment of the present invention. As shown in Figure 2, the display device includes a light source device 201, an illumination system 202, a light modulation device 203, and an imaging system 204. The light source light generated by the light source device 201 is irradiated onto the light modulation device 203 via the illumination system 202. The light modulation device 203 modulates the incident light source light into image light, which is then irradiated into the imaging system 204. Ultimately, the image light is imaged onto a projection object, such as a screen, to form a projection image. The light modulation device 203 can be any of a DMD, LCOS, and LCD; the imaging system 204 is generally a lens system, such as a projection lens.

[0078] In addition, the display device may also include a light source control module (not shown in the figure) that can control the operation of one or more light sources in the light source device 201 so that the light source device 201 emits light in a specified wavelength band required for image generation. Furthermore, the light source device 201, the illumination system 202, the light modulation device 203, and the imaging system 204 may all be included in the optical engine 102 (see Figure 1).

[0079] The light source device 201 may include one or more light sources. The light source may be a laser light source, an LED light source, a fluorescent light source, or a UV light source, etc. Furthermore, the light source may be a single light-emitting element or a light-emitting element array, and the light-emitting element array may include light-emitting elements of different colors. For example, the light source may be an LD light source or an LED light source that generates blue light, green light, or red light, etc., or the light source may be a multi-color laser, that is, a light-emitting element array that includes multiple lasers, such as a blue laser and a red laser, or a blue laser and a green laser, or a blue laser, a red laser, and a green laser.

[0080] The illumination system 202 is a part extending from the light source device 201 to the light modulation device 203 , and is configured to illuminate the light emitted by the light source device 201 onto the light modulation device 203 . For example, the illumination system 202 may include one or more lenses.

[0081] Figure 3 is a schematic diagram of the structure of a light source device provided by an embodiment of the present invention. As shown in Figure 3, the light source device includes an excitation light source 110, a wavelength conversion device 120, and a second light source 130. The excitation light generated by the excitation light source 110 is irradiated onto the wavelength conversion device 120 to generate a first light. The first light and the second photosynthetic light generated by the second light source 130 form the output light of the light source device.

[0082] The excitation light source 110 may be a laser light source, an LED light source, or a UV light source, etc. Furthermore, the excitation light source 110 may be a single light-emitting element or a light-emitting element array, and the light-emitting element array may include light-emitting elements of different colors. For example, the excitation light source 110 may include a monochromatic laser or light-emitting diode that generates blue light, green light, or red light, etc., or the excitation light source 110 may be a multicolor laser, that is, an array of light-emitting elements including multiple lasers, such as the excitation light source 110 may include a blue laser and a red laser, or a blue laser and a green laser, or a blue laser, a red laser, and a green laser at the same time. In the following embodiments, the excitation light source 110 is described as a blue laser light source BLD.

[0083] The wavelength conversion device 120 is used to generate the first light under the irradiation of the excitation light. The wavelength conversion device 120 includes a substrate for receiving the excitation light and a motor for driving the movement of the substrate. The substrate may include one or more regions to generate one or more sub-lights. By driving the substrate to move, such as rotating, moving, or swinging, the motor can cause multiple regions to be located in the optical path of the excitation light in a timely manner. In the embodiment shown in Figure 3, the wavelength conversion device 120 is transmissive. In some other embodiments, the wavelength conversion device 120 can also be reflective. As shown in Figure 4, the first light and the second light can be combined by a light combining element.

[0084] The second light source 130 may be a laser light source, an LED light source, or a fluorescent light source, etc. Furthermore, the second light source 130 may be a single light-emitting element or a light-emitting element array, and the light-emitting element array may include light-emitting elements of different colors. For example, the second light source 130 may include a monochromatic laser or light-emitting diode that generates blue light, green light, or red light, etc. Alternatively, the second light source 130 may be a multicolor laser, i.e., a light-emitting element array that includes multiple lasers. For example, the second light source 130 may include a blue laser and a red laser, or a blue laser and a green laser, or a combination of a blue laser, a red laser, and a green laser.

[0085] Figures 5-8 are schematic diagrams of the structure of a wavelength conversion device provided in an embodiment of the present invention. As shown in Figure 5, the wavelength conversion device is divided into three regions: red (R), green (G), and blue (B). The R region is provided with a red or orange phosphor material and produces R light under the irradiation of the excitation light BLD. The G region is provided with a green phosphor material and produces G light under the irradiation of the excitation light BLD. The B region may not be provided with a phosphor material and produces B light after reflecting or scattering the excitation light BLD, or the B region may be provided with a cyan phosphor material and produces B light under the irradiation of the excitation light BLD. The three RGB regions are located in a time sequence on the optical path of the excitation light BLD and sequentially produce red, green, and blue light. It should be noted that in the embodiment of the present invention, the three colors of light are referred to as the three primary colors, and the relative positions of the three RGB regions can also be set as needed.

[0086] The second light generated by the second light source 130 may include one or more primary color lights. For example, if the second light includes one primary color light, and the second light is red light, then when the output timing of the second light is within the output timing of the R light generated by the wavelength conversion device, that is, the second light source 130 is illuminated only when the R region is on the optical path of the excitation light BLD, the light source device sequentially generates three colors of light: RGB. When the output timing of the second light is greater than the output timing of the R light generated by the wavelength conversion device, that is, the illumination timing of the second light source 130 is greater than the time the R region is on the optical path of the excitation light BLD, the output timing of the second light may partially overlap with the output timing of the G light and / or B light generated by the wavelength conversion device, thereby generating mixed color light. For example, if the output timing of the second light overlaps with the G light to generate yellow (Y) light, the light source device sequentially generates four colors of light: RY, G, and B. For example, if the output timing of the second light overlaps with the B light to generate magenta (M) light, the light source device sequentially generates four colors of light: RGB, M. For example, if the output timing of the second light overlaps with both the G and B lights, the light source device sequentially generates five colors of light: RY, G, and B. Preferably, the second light is laser light. By mixing a fluorescent light containing the laser light spectrum with the laser light, such as mixing red fluorescent light with red laser light or yellow fluorescent light with red laser light, the brightness can be increased while significantly reducing speckle. It should be understood that the second light can also be green or blue light. Similarly, by controlling the lighting time of the second light source 130, the light source device can output three, four, or five colors of light. For example, if the second light is green, the light source device can output three colors of RGB, four colors of RYGB (or RGCB), or five colors of RYGCB. If the second light is blue, the light source device can output three colors of RGB, four colors of RGCB (or RGBM), or five colors of RGCBM, where C represents cyan light.

[0087] Optionally, the second light source 130 includes a first light-emitting element and a second light-emitting element, the first light-emitting element is used to generate red light, and the second light-emitting element is used to generate green light, that is, the second light includes red light and green light, then when the output time of the red light in the second light is within the output time of the R light generated by the wavelength conversion device, and the output time of the green light in the second light is within the output time of the G light generated by the wavelength conversion device, that is, the first light-emitting element is only lit when the R area is on the optical path of the excitation light BLD, and the second light-emitting element is only lit when the G area is on the optical path of the excitation light BLD, the light source device generates RGB three colors of light in sequence. When the output time of the red light in the second light is longer than the output time of the R light generated by the wavelength conversion device, and / or the output time of the green light in the second light is longer than the output time of the G light generated by the wavelength conversion device, that is, the lighting time of the first light-emitting element is longer than the time when the R region is on the optical path of the excitation light BLD, and / or the lighting time of the second light-emitting element is longer than the time when the G region is on the optical path of the excitation light BLD, the output time of the red and / or green light in the second light will partially overlap with the output time of the G light and / or B light generated by the wavelength conversion device, thereby generating mixed color light, so that the light source device can output four or five colors of light. It should be understood that the first light-emitting element can also be used to generate green light or blue light, and the second light-emitting element can also be used to generate red light or blue light. Similarly, by controlling the lighting time of the first and second light-emitting elements, the light source device can output three, four, or five colors of light.

[0088] Furthermore, the second light source 130 may also include light-emitting elements of three colors, that is, the second light may include red, green and blue lights. By controlling the lighting time of the three colors of light-emitting elements in the second light source 130, the light source device can also output three, four or five colors of light. This will not be introduced in detail here.

[0089] The display device can be set with corresponding display modes corresponding to the output light of the light source device to meet the different needs of users and improve user experience. For example, the display mode of the display device includes three modes, the first mode corresponds to the light source device outputting five colors of light, the second mode corresponds to the light source device outputting three colors of light, and the third mode corresponds to the light source device outputting four colors of light. For another example, the display mode of the display device includes two modes, the first mode corresponds to the light source device outputting five colors of light, and the second mode corresponds to the light source device outputting three colors of light. When the display mode of the display device includes multiple modes, the mode determination module in the system can automatically determine the target display mode according to the actual playback scene, or the user can select the target display mode. Optionally, although the light source device can output three, four, or five colors of light, only one display mode can be set in the display device according to the main purpose of the display device at the factory, that is, the display mode of the display device cannot be adjusted. For example, if the display device is used in a cinema, the light source device in the display device is set to output three colors of light.

[0090] In some scenarios, even if the light source device supports three light output modes, four light output modes, and five light output modes, a configuration file of the system can only support one mode and cannot be compatible with multiple modes at the same time. In order to be compatible with multiple modes in the system at the same time, multiple memories can be used to store multiple sets of configuration files. When the display mode needs to be switched, the configuration files are switched to the corresponding memories and reloaded. If three modes need to be compatible at the same time, the storage unit includes three memories, each of which stores a configuration file. If two modes need to be compatible at the same time, the storage unit includes two memories, each of which stores a configuration file. For example, the storage unit includes a first memory and a second memory, the first memory stores a first configuration file, and the second memory stores a second configuration file, wherein the first configuration file is used to implement the first mode and the second configuration file is used to implement the second mode. When the target display mode is the first mode, the control module loads the first configuration file from the first memory to control the light modulation device to implement the first mode. When the target display mode is the second mode, the control module loads the second configuration file from the second memory to control the light modulation device to implement the second mode. Alternatively, the method of storing multiple configuration files is not limited to using multiple memories. For example, multiple configuration files can be stored in a single memory, and different boot addresses can be used to load different configuration files. For example, the storage unit includes a third memory that stores the first configuration file and the second configuration file (the display device is compatible with both modes). Alternatively, the three configuration files can be stored in two memories. Furthermore, a single configuration file can contain configurations for multiple modes simultaneously, and the modes can be switched by loading different configurations into the single configuration file.

[0091] In some embodiments, the wavelength conversion device may include four zones, as shown in FIG6 , where the first light includes four types of light: RGB, Y, and by controlling the lighting time of the excitation light source and / or the second light source, the light source device including the wavelength conversion device of the embodiment shown in FIG6 may also output three types of light: RGB, or five types of light: RY, G, C, B. In other embodiments, the wavelength conversion device may include five zones, as shown in FIG7 , where the first light includes five types of light: RGB, Y, C, and C. By controlling the lighting time of the excitation light source and / or the second light source, the light source device including the wavelength conversion device of the embodiment shown in FIG7 may also output three types of light: RGB, or four types of light: RGB, Y, G, C, or C.

[0092] In the embodiment shown in Figure 5, once the wavelength conversion device is partitioned, the duty cycles of red, green, and blue are also fixed. While the duty cycle can be adjusted by reducing the output time of one or more of the three RGB lights, this will reduce the total RGB duty cycle to less than 100%, resulting in a compromise in brightness. In the embodiments shown in Figures 6 and 7, although the light source device can output RGB lights by controlling the lighting time of the excitation light source and / or the secondary light source, this will reduce the time the light source device outputs light. For example, if the wavelength conversion device includes four RGBY zones, when the light source device outputs RGB lights, no light will be output in the Y zone, resulting in reduced brightness.

[0093] Please refer to Figure 8. The wavelength conversion device includes two areas, such as the R area and the G area, or the R area and the B area, or the G area and the B area. Specifically, the wavelength conversion device includes a first area and a second area. The sum of the distribution angles of the first area and the second area is equal to 360 degrees. The first area is used to generate a first primary color light under the irradiation of the excitation light, and the second area is used to generate a third primary color light under the irradiation of the excitation light. The second light includes the second primary color light (and may also include the first primary color light and / or the third primary color light). The light source device can output three kinds of light, four kinds of light, or five kinds of light.

[0094] For example, the excitation light source is lit in the first time, the first area is located in the optical path of the excitation light to generate the first primary color light, the excitation light source is kept lit in the second time, the second area is located in the optical path of the excitation light to generate the third primary color light, the excitation light source is turned off in the third time, the second light source is lit to generate the second primary color light, that is, within one lighting cycle, the light source device generates the first primary color light, the third primary color light, and the second primary color light in a time sequence. For another example, the excitation light source is lit in the first sub-time, the first area is located in the optical path of the excitation light to generate the first primary color light, the excitation light source is kept lit in the second sub-time, the first area is still located in the optical path of the excitation light to generate the first primary color light, and the second light source is lit to generate the second primary color light, the first primary color light and the second primary color light are mixed to generate the first mixed color light, the excitation light source is turned off in the third sub-time, the second light source is kept lit to generate the second primary color light, and the second light source is turned off in the fourth sub-time, the excitation light source is lit, the second area is located in the optical path of the excitation light to generate the third primary color light, that is, within one lighting cycle, the light source device generates the first primary color light, the first mixed color light, the second primary color light, and the third primary color light in a time sequence. For another example, during the first sub-time, the excitation light source is lit, the first area is located in the optical path of the excitation light and generates the first primary color light; during the second sub-time, the excitation light source is kept lit, the first area is still located in the optical path of the excitation light and generates the first primary color light; at the same time, the second light source is lit to generate the second primary color light; the first primary color light and the second primary color light are mixed to generate the first mixed color light; during the third sub-time, the excitation light source is turned off, the second light source is kept lit, and the second primary color light is generated; during the fourth sub-time, the second light source is kept lit, and the excitation light source is lit at the same time; the second area is located in the optical path of the excitation light and generates the third primary color light; the second primary color light and the third primary color light are mixed to generate the second mixed color light; during the fifth sub-time, the second light source is turned off, the excitation light source is kept lit, and the second area is still located in the optical path of the excitation light and generates the third primary color light. That is, within one lighting cycle, the light source device generates five kinds of light: the first primary color light, the first mixed color light, the second primary color light, the second mixed color light and the third primary color light in sequence. If the second light also includes the first primary color light and / or the third primary color light, the output time of the first primary color light in the second light is within the output time of the first primary color light generated by the wavelength conversion device, that is, the light-emitting element generating the first primary color light in the second light source is illuminated only when the first region of the wavelength conversion device is located in the optical path of the excitation light. The output time of the third primary color light in the second light is within the output time of the third primary color light generated by the wavelength conversion device, that is, the light-emitting element generating the third primary color light in the second light source is illuminated only when the second region of the wavelength conversion device is located in the optical path of the excitation light. It should be noted that the length of each time period can be preset in the display device as needed.

[0095] It should be understood that the second light may also include the first primary color light or the third primary color light. By adjusting the output time of the first primary color light or the third primary color light in the second light, the output time of the first primary color light in the second light partially overlaps with the output time of the second primary color light and / or the third primary color light generated by the wavelength conversion device, or the output time of the third primary color light in the second light partially overlaps with the output time of the first primary color light and / or the second primary color light generated by the wavelength conversion device, thereby generating corresponding mixed light. Similarly, the light source device can generate four or five lights in a time sequence.

[0096] In some embodiments, the display device includes a synchronization module connected to the excitation light source, the wavelength conversion device and the second light source, and the synchronization module is used to control the switching of the excitation light source and / or the second light source according to the position of the wavelength conversion device, so that when the light source device is used to generate four kinds of light in a time sequence, the output time of the first primary color light and the second primary color light generated by the light source device partially overlaps to generate a first mixed light (or the output time of the second primary color light and the third primary color light partially overlaps); when the light source device is used to generate five kinds of light in a time sequence, the output time of the first primary color light and the second primary color light generated by the light source device partially overlaps to generate a first mixed light, and the output time of the second primary color light and the third primary color light generated by the light source device partially overlaps to generate a second mixed light, wherein the spectrum of the first mixed light includes the spectrum of the first primary color light and the spectrum of the second primary color light, and the spectrum of the second mixed light includes the spectrum of the second primary color light and the spectrum of the third primary color light.

[0097] When the wavelength conversion device includes two zones, by cooperating with the second light source in the light source device, the light source device can output three, four, or five types of light, so that the display device can be compatible with multiple display modes to meet different needs. By coordinating the timing of the excitation light source, the second light source, and the wavelength conversion device, the function of adjusting the red, green, and blue duty ratios can be maximized without reducing the brightness while keeping the total duty ratio of red, green, and blue as high as possible. By way of example, the wavelength conversion device includes two regions, one of the two regions is used to generate a first sub-light under the irradiation of the excitation light, and the other of the two regions is used to generate a second sub-light under the irradiation of the excitation light, the spectrum of the first sub-light includes the spectrum of one of the first primary light and the third primary light, the spectrum of the second sub-light includes the spectrum of the other of the first primary light and the third primary light, and the second light generated by the second light source includes the second primary light, or the spectrum of the first sub-light includes the spectrum of one of the first primary light and the third primary light, the spectrum of the second sub-light includes the spectrum of the second primary light, and the second light generated by the second light source includes the second primary light and the other of the first primary light and the third primary light.

[0098] Optionally, the wavelength conversion device may also include only one zone, such as a first zone, the distribution angle of the first zone is equal to 360 degrees, the second light includes a second primary color light and a third primary color light (and may also include the first primary color light), and the light source device can also output three lights, four lights, or five lights to achieve the same effect as the embodiment shown in Figure 8, but the second light source must include at least two light-emitting elements.

[0099] 8 , the following description will be made by taking as an example that the wavelength conversion device includes two areas, area G and area B, and the second light source includes two light sources, a red light source and a green light source.

[0100] When a light source device needs to generate three types of light in a timed sequence, the wavelength conversion device only divides the wavelengths into B and G, for example, with the G region occupying 60% and the B region occupying 40%. To achieve a duty cycle of 33%, 34%, and 33% for RGB, respectively, the rotational state of the wavelength conversion device must first be synchronized with the control of the light source. For example, the wavelength conversion device can be reset to a preset position when adjusting the duty cycle, or the position of the wavelength conversion device can be detected by a detection device (such as a sensor). For example, a sensor can be installed at a fixed position on the wavelength conversion device's substrate, and a position signal is generated when another fixed sensor detects the sensor on the substrate. Another example is to attach a piece of vinyl to a fixed position on the wavelength conversion device's motor, such as at the boundary between the B and G regions. A fixed photodiode is aligned with the motor. When the motor rotates to the vinyl position, it feedbacks a high-level signal, which is used to synchronize with the control signal of the light source. When the device is in operation, the motor is first controlled to a fixed speed, which allows the calculation of the time occupied by each region of the wavelength conversion device. For example, if the rotation speed is 120 Hz, then one rotation takes 8.33 ms. Since the G region occupies 60%, the corresponding time for the G region is 5 ms, and the time for the B region is 3.3 ms. This allows us to deduce the time it takes for the wavelength conversion device to rotate to each position. For example, if we need a 34% duty cycle for G, that is, the excitation light source is off for the first 26% of the G region and then on for the next 34%. This corresponds to a 2.17 ms off time and a 2.83 ms on time. When the wavelength conversion device reaches the boundary between the B and G regions, the photodiode returns a high-level signal. Upon receiving this signal, the synchronization module begins timing, illuminating the excitation light source at 2.17 ms. The same control applies to other duty cycles. When the wavelength conversion device reaches the G region and 34% of the G region remains, the excitation light source is illuminated and the second light source is turned off. When the wavelength conversion device reaches 33% of the B region, the excitation light source is turned off, while the red light source in the second light source is illuminated, generating the light output timing diagram shown in Figure 9. Similarly, to achieve other RGB duty cycles, simply turn on and off the corresponding light source when the wavelength conversion device rotates to the corresponding position. In this example, the B duty cycle can be adjusted from 0% to 40%, the G duty cycle from 0% to 60%, and the R duty cycle from 0% to 100%.

[0101] In some embodiments, the wavelength conversion device can be divided into zones based on the actual distribution of the brightness of the light-emitting elements and the desired white balance color point. For example: a certain model of red, green, and blue light-emitting elements is selected, and the duty cycle required to achieve the desired white balance color point is R33%, G34%, and B33%. However, since not every light-emitting element is exactly the same, assuming that the light-emitting element with the worst consistency requires R20%, G50%, and B30% to achieve the corresponding target white balance, the B zone and the G zone on the wavelength conversion device can be divided into 50% at the same time. In this way, the B duty cycle can be adjusted from 0%-50%, the G duty cycle can be adjusted from 0%-50%, and the R duty cycle can be adjusted from 0%-100%. The following is an example of a method for calculating the target duty cycle of RGB:

[0102] Among them, d R represents the target duty cycle of R light, d G represents the target duty cycle of G light, d B represents the target duty cycle of light B, (x R ,y R ) is the color coordinate of the R light emitted by the light source device, (x G ,y G ) is the color coordinate of the G light emitted by the light source device, (x B ,y B ) is the color coordinate of the B light emitted by the light source device, (x W ,y W ) is the color coordinate of the white light of the target white balance, Y R0 is the original brightness of the R light emitted by the light source device, Y G0 is the original brightness of the G light emitted by the light source device, Y B0 is the original brightness of the B light emitted by the light source device. The original brightness here refers to the brightness without considering the influence of the duty cycle.

[0103] After the target duty cycle of RGB is calculated according to the above formula, the wavelength conversion device can be divided into zones according to the target duty cycle. For example, if the target duty cycle of RGB is calculated as: R20%, G50%, B30%, if the wavelength conversion device is only divided into G zone and B zone, then the B zone and G zone on the wavelength conversion device can be divided into 50% at the same time, so that the B duty cycle can be adjusted from 0%-50%, the G duty cycle can be adjusted from 0%-50%, and the R duty cycle can be adjusted from 0%-100%; if the wavelength conversion device is only divided into R zone and G zone, then The R zone and the G zone on the wavelength conversion device are divided into 50% at the same time, so that the R duty cycle can be adjusted from 0%-50%, the G duty cycle can be adjusted from 0%-50%, and the B duty cycle can be adjusted from 0%-100%; if the wavelength conversion device is only divided into the R zone and the B zone, the R zone on the wavelength conversion device can be divided into more than 20%, and the B zone can be divided into more than 30%, such as the R zone is divided into 40% and the B zone is divided into 60%, so that the R duty cycle can be adjusted from 0%-40%, the B duty cycle can be adjusted from 0%-60%, and the G duty cycle can be adjusted from 0%-100%.

[0104] When it is necessary to realize that the light source device generates five kinds of light in sequence. The wavelength conversion device only divides B and G, for example, the G area accounts for 60% and the B area accounts for 40%; when it is desired to realize a duty cycle of RGBYC of 27.6%, 20.8%, 31.6%, 12%, and 8% respectively, the light source control principle is similar to that of generating three kinds of light as described above. The difference is that from the time when the excitation light source is turned on to generate G light (the green light source is also turned on) to the time when the red light source is turned off, G light and R light exist at the same time, and after combining, Y light is generated. From the time when the red light source is turned off to the boundary between the G and B areas, only G light exists. From the boundary to the time when the green light source is turned off, G light and B light exist at the same time, and after combining, C light is generated. The light output timing diagram shown in Figure 10 is generated. Similar to the above generation of three kinds of light, the adjustment of different duty cycles can be achieved by controlling the lighting time of each light source.

[0105] It should be noted that when achieving the target white balance, if the light source device generates three types of light (corresponding to the second mode), the RGB duty cycle distribution is R33%, G34%, and B33%; if the light source device generates five types of light (corresponding to the first mode), the duty cycles of RGBYC are 27.6%, 20.8%, 31.6%, 12%, and 8%, respectively. Then, when switching the display mode, the synchronization module can be used to adjust the switching time of the excitation light source and / or the second light source to adjust the duty cycle of various lights generated by the light source device, thereby achieving the target white balance without sacrificing brightness.

[0106] It should be understood that the term "module" in the embodiments of the present invention may refer to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (e.g., a shared processor, a dedicated processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, combined logic circuits, and / or other suitable components that support the described functions. Modules described as separate components may or may not be physically separate, and components displayed as modules may or may not be physical modules, i.e., they may be located in one place or distributed across multiple network modules. Some or all of the modules may be selected based on actual needs to achieve the purpose of the embodiments of the present invention. The module division is merely a logical functional division, and other division methods may be used in actual implementation. For example, a module or component may be divided into multiple modules or components, or multiple modules or components may be combined or integrated into another system, or some features may be ignored or not implemented. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device, or module, and may be electrical, mechanical, or other forms.

[0107] Those skilled in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed in the present invention can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0108] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A display system, characterized in that: The display mode of the display system includes a first mode, the display system includes a light source device, If the target display mode of the display system is the first mode, the light source device is used to generate four lights or five lights in a time sequence, the four lights or the five lights are composed of a first light and a second light, the four lights include a first primary light, a second primary light, a third primary light and a first mixed light, the five lights include a first primary light, a second primary light, a third primary light, a first mixed light and a second mixed light, wherein the spectrum of the first mixed light includes the spectrum of the first primary light and the spectrum of the second primary light, and the spectrum of the second mixed light includes the spectrum of the second primary light and the spectrum of the third primary light; The light source device comprises: An excitation light source, used for generating excitation light; A wavelength conversion device, used for generating a first light under the irradiation of the excitation light, wherein the first light includes one or more sub-lights, and the spectrum of the sub-light includes the spectrum of any one of the first primary color light, the second primary color light and the third primary color light; A second light source is used to generate a second light. When the light source device is used to generate four kinds of light in sequence, the second light includes at least one of the first primary color light and the second primary color light. When the light source device is used to generate five kinds of light in sequence, the second light includes at least the second primary color light.

2. A display system according to claim 1, characterized in that: The display mode of the display system further includes a second mode, If the target display mode of the display system is the second mode, the light source device is used to generate three kinds of light in a time sequence, and the three kinds of light include a first primary color light, a second primary color light and a third primary color light.

3. A display system according to claim 1, characterized in that: The first light includes a third sub-light, and a spectrum of the third sub-light includes a spectrum of one light in the second light.

4. A display system according to claim 1, characterized in that: When the light source device is used to generate four kinds of light in sequence, the second light source includes a first light-emitting element and a second light-emitting element, the first light-emitting element is used to generate one of the first primary color light and the second primary color light, and the second light-emitting element is used to generate the other of the first primary color light and the second primary color light and one of the third primary color light; the wavelength conversion device includes a first area, and the first area is used to generate light with a spectrum including the other of the first primary color light and the second primary color light and the other of the third primary color light under the irradiation of the excitation light; or, The second light source includes a first light-emitting element, the first light-emitting element is used to generate one of a first primary color light and a second primary color light; the wavelength conversion device includes a first area and a second area, the second area is used to generate light with a spectrum including the other of the first primary color light and the second primary color light and one of the third primary color light under the irradiation of the excitation light, and the first area is used to generate light with a spectrum including the other of the first primary color light and the second primary color light and the other of the third primary color light under the irradiation of the excitation light; When the light source device is used to generate five kinds of light in sequence, the second light source includes a third light-emitting element and a fourth light-emitting element, the third light-emitting element is used to generate a second primary color light, and the second light-emitting element is used to generate one of the first primary color light and the third primary color light; the wavelength conversion device includes a third area, and the third area is used to generate light containing a spectrum of the other of the first primary color light and the third primary color light under the irradiation of the excitation light; or, The second light source includes a third light-emitting element, which is used to generate a second primary color light; the wavelength conversion device includes a third zone and a fourth zone, the fourth zone is used to generate light with a spectrum including one of the first primary color light and the third primary color light under the irradiation of the excitation light, and the third zone is used to generate light with a spectrum including the other of the first primary color light and the third primary color light under the irradiation of the excitation light.

5. A display system according to claim 4, characterized in that: When the wavelength conversion device includes a first zone and a second zone, the sum of the distribution angles of the first zone and the second zone is 360 degrees; when the wavelength conversion device includes a third zone and a fourth zone, the sum of the distribution angles of the third zone and the fourth zone is 360 degrees.

6. A display system according to claim 4, characterized in that: When the light source device is used to generate four kinds of light in sequence, and the second light source includes a first light-emitting element and a second light-emitting element, the wavelength conversion device further includes a fifth region, and the fifth region is used to generate light having a spectrum including one of the first primary color light and the second primary color light under the irradiation of the excitation light, and the sum of the distribution angles of the first region and the fifth region is 360 degrees; or, When the light source device is used to generate five kinds of light in sequence and the second light source includes a third light-emitting element and a fourth light-emitting element, the wavelength conversion device also includes a sixth zone, and the sixth zone is used to generate light containing a spectrum of the second primary color light under the irradiation of the excitation light, and the sum of the distribution angles of the third zone and the sixth zone is 360 degrees.

7. A display system according to claim 4, characterized in that: The distribution angle of the second area is greater than or equal to the distribution angle corresponding to the duty ratio when the other of the first primary color light and the second primary color light and one of the third primary color light meet the target white balance; the distribution angle of the first area is greater than or equal to the distribution angle corresponding to the duty ratio when the other of the first primary color light and the second primary color light and the other of the third primary color light meet the target white balance; The distribution angle of the fourth zone is greater than or equal to the distribution angle corresponding to the duty cycle when one of the first primary color light and the third primary color light meets the target white balance; the distribution angle of the third zone is greater than or equal to the distribution angle corresponding to the duty cycle when the other of the first primary color light and the third primary color light meets the target white balance.

8. A display system according to claim 2, characterized in that: The display system further comprises: a synchronization module connected to the excitation light source, the wavelength conversion device and the second light source, and used to control the switch of the excitation light source and / or the second light source, so that when the light source device is used to generate four kinds of light in sequence, the output time of the first primary color light and the second primary color light generated by the light source device partially overlaps to generate the first mixed color light; when the light source device is used to generate five kinds of light in sequence, the output time of the first primary color light and the second primary color light generated by the light source device partially overlaps to generate the first mixed color light, and the output time of the second primary color light and the third primary color light generated by the light source device overlaps to generate the first mixed color light. The two light sources are partially overlapped to generate the second mixed color light.

9. A display system according to claim 8, characterized in that: The synchronization module is also used to adjust the switching time of the excitation light source and / or the second light source to adjust the duty cycle of various lights generated by the light source device when the target display mode of the display system changes from the first mode to the second mode or from the second mode to the first mode, so that the light generated by the light source device meets the target white balance.

10. A display system according to claim 8, characterized in that: The wavelength conversion device comprises: A substrate, used for receiving the excitation light; A motor, used for driving the substrate to move; A position identification element, located at a preset position of the substrate or the motor; The position detection element is used to generate a position signal when the position identification element is detected, and the position signal is used by the synchronization device to control the switching of the excitation light source and / or the second light source.

11. A display system according to claim 2, characterized in that: The display system further includes a storage unit, a control module and a light modulation device, wherein: The storage unit includes a first memory and a second memory, or includes a third memory, the first memory stores a first configuration file, the second memory stores a second configuration file; the third memory stores a first configuration file and a second configuration file, or stores a third configuration file, the first configuration file is used to implement the first mode, the second configuration file is used to implement the second mode, and the third configuration file is used to implement the first mode and the second mode; The control module is connected to the storage unit and the light modulation device, and is used to load the first configuration file from the first memory or the third memory or load the third configuration file from the third memory to control the light modulation device to implement the first mode if the target display mode of the display system is the first mode, and load the second configuration file from the second memory or the third memory or load the third configuration file from the third memory to control the light modulation device to implement the second mode if the target display mode of the display system is the second mode; The light modulation device is used to modulate the light generated by the light source device.

12. A display system according to claim 2, characterized in that: The display system further comprises: The mode determination module is used to determine the target display mode of the display system.

13. A method for controlling a display system, characterized in that: The display mode of the display system includes a first mode, the display system includes a light source device, and the light source device includes: An excitation light source, used for generating excitation light; A wavelength conversion device, used for generating a first light under the irradiation of the excitation light, wherein the first light includes one or more sub-lights, and the spectrum of the sub-light includes the spectrum of any one of the first primary color light, the second primary color light and the third primary color light; A second light source, used to generate a second light, wherein the second light at least includes a second primary color light; The control method comprises: If the target display mode of the display system is the first mode, the light source device is controlled to generate four lights or five lights in sequence, the four lights or the five lights are composed of a first light and a second light, the four lights include a first primary light, a second primary light, a third primary light and a first mixed light, and the five lights include a first primary light, a second primary light, a third primary light, a first mixed light and a second mixed light, wherein the spectrum of the first mixed light includes the spectrum of the first primary light and the spectrum of the second primary light, and the spectrum of the second mixed light includes the spectrum of the second primary light and the spectrum of the third primary light.

14. The control method of a display system according to claim 13, characterized in that: The display mode of the display system further includes a second mode, and the control method further includes: If the target display mode of the display system is the second mode, the light source device is controlled to generate three kinds of light in a time sequence, wherein the three kinds of light include a first primary color light, a second primary color light and a third primary color light.

15. The control method of a display system according to claim 13, characterized in that: The wavelength conversion device includes two regions, one of the two regions is used to generate a first sub-light under the irradiation of the excitation light, and the other of the two regions is used to generate a second sub-light under the irradiation of the excitation light, the spectrum of the first sub-light includes the spectrum of one of the first primary color light and the third primary color light, and the spectrum of the second sub-light includes the spectrum of the other of the first primary color light and the third primary color light or the second primary color light, and the control method further includes: The distribution angles of each area on the wavelength conversion device are determined according to the light emission conditions of all light sources in the light source device and the target white balance, so that the distribution angle of one area is greater than or equal to the distribution angle corresponding to the duty cycle when one of the first primary color light and the third primary color light meets the target white balance, and the distribution angle of the other area is greater than or equal to the distribution angle corresponding to the duty cycle when the other of the first primary color light and the third primary color light or the second primary color light meets the target white balance.

16. The control method of a display system according to claim 14, characterized in that: The control method further comprises: Control the switches of the excitation light source and the second light source so that when the light source device is used to generate four kinds of light in sequence, the output times of the first primary color light and the second primary color light generated by the light source device partially overlap to generate the first mixed color light; when the light source device is used to generate five kinds of light in sequence, the output times of the first primary color light and the second primary color light generated by the light source device partially overlap to generate the first mixed color light, and the output times of the second primary color light and the third primary color light generated by the light source device partially overlap to generate the second mixed color light.

17. The control method of a display system according to claim 14, characterized in that: The control method further comprises: Determine the target display mode of the display system, when the target display mode of the display system changes from the first mode to the second mode or from the second mode to the first mode, adjust the switch of the excitation light source and / or the second light source The duty ratio of various lights generated by the light source device is adjusted so that the light generated by the light source device meets the target white balance.

18. The control method of a display system according to claim 14, characterized in that: The display system further includes a storage unit and a light modulation device, wherein: The storage unit includes a first memory and a second memory, or includes a third memory, the first memory stores a first configuration file, the second memory stores a second configuration file; the third memory stores a first configuration file and a second configuration file, or stores a third configuration file, the first configuration file is used to implement the first mode, the second configuration file is used to implement the second mode, and the third configuration file is used to implement the first mode and the second mode; The light modulation device is used to modulate the light generated by the light source device; The control method further comprises: If the target display mode of the display system is the first mode, the first configuration file is loaded from the first memory or the third memory, or the third configuration file is loaded from the third memory to control the light modulation device to implement the first mode; if the target display mode of the display system is the second mode, the second configuration file is loaded from the second memory or the third memory, or the third configuration file is loaded from the third memory to control the light modulation device to implement the second mode.

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