Display system and control method of display system

Abstract

The invention discloses a display system and a control method of the display system, and relates to the technical field of display. The second light source which does not pass through the wavelength conversion device is arranged in the light source device, and the second light generated by the second light source at least comprises one kind of primary light, so that the output time of the primary light can be independently adjusted, and the output time of the primary light can be overlapped with or not overlapped with the output time of the light generated by the wavelength conversion device; therefore, the mode of target white brightness can be realized in the display system with the wavelength conversion device, and the mode of high pure-color brightness of three primary colors can be compatible.

Description

Technical Field

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

[0002] Projectors are widely used in various situations, such as office briefings, playing movies and TV shows, installation art, etc. Among the current mainstream projection technologies, laser plus fluorescent light source devices have advantages in power consumption, brightness, color gamut, etc. However, in the current laser plus fluorescent light source devices, the duty ratio of the red, green and blue light sources depends on the fluorescent powder partitions coated on the wavelength conversion device. Once the fluorescent powder partitions are fixed, the duty ratio is fixed. This results in the light source device not being able to adjust the white balance color point by adjusting the duty ratio, but can only be adjusted by reducing the current, which often reduces the brightness a lot, resulting in large differences in the brightness of the mass-produced optical machines. At the same time, since the duty ratio cannot be changed, it is not possible to simultaneously be compatible with the high pure color brightness mode of the three primary colors of red, green and blue and the high white brightness mode. These two modes have their own advantages, but due to the limitations of the wavelength conversion device partitions, they cannot be selected according to the actual user's usage. Summary of the invention

[0003] In view of this, the present invention provides a display system and a control method of 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 mode with high pure color brightness of three primary colors.

[0004] In a first aspect, the present invention provides a display system, wherein a display mode of the display system includes a first mode, and the display system includes a light source device,

[0005] 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;

[0006] The light source device comprises:

[0007] An excitation light source, used for generating excitation light;

[0008] 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;

[0009] 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.

[0010] In a possible implementation, the display mode of the display system further includes a second mode.

[0011] 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.

[0012] In a possible implementation manner, 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.

[0013] In one possible implementation,

[0014] 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,

[0015] 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;

[0016] 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,

[0017] 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.

[0018] 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.

[0019] In a possible implementation, 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,

[0020] 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.

[0021] In a 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;

[0022] 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.

[0023] In a possible implementation, the display system further includes:

[0024] 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 sequence, the output time 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 time 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 time 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.

[0025] 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 a first mode to a second mode or from a second mode to a first mode, so that the light generated by the light source device meets the target white balance.

[0026] In a possible implementation, the wavelength conversion device includes:

[0027] A substrate, used for receiving the excitation light;

[0028] A motor, used for driving the substrate to move;

[0029] A position identification element, located at a preset position of the substrate or the motor;

[0030] 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.

[0031] In a possible implementation, the display system further includes a storage unit, a control module and a light modulation device, wherein:

[0032] 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;

[0033] 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;

[0034] The light modulation device is used to modulate the light generated by the light source device.

[0035] In a possible implementation, the display system further includes:

[0036] The mode determination module is used to determine the target display mode of the display system.

[0037] In a second aspect, the present invention provides a control method for a display system, wherein a display mode of the display system includes a first mode, the display system includes a light source device, and the light source device includes:

[0038] An excitation light source, used for generating excitation light;

[0039] 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;

[0040] A second light source, used to generate a second light, wherein the second light at least includes a second primary color light;

[0041] The control method comprises:

[0042] 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.

[0043] In a possible implementation, the display mode of the display system further includes a second mode, and the control method further includes:

[0044] 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.

[0045] In a possible implementation, the wavelength conversion device includes two areas, one of the two areas is used to generate a first sub-light under the irradiation of the excitation light, and the other of the two areas 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:

[0046] 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.

[0047] In a possible implementation, the control method further includes:

[0048] 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.

[0049] In a possible implementation, the control method further includes:

[0050] Determine a target display mode of the display system. When the target display mode of the display system changes from a first mode to a second mode or from a second mode to a 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 satisfies the target white balance.

[0051] In a possible implementation, the display system further includes a storage unit and a light modulation device, wherein:

[0052] 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;

[0053] The light modulation device is used to modulate the light generated by the light source device;

[0054] The control method further comprises:

[0055] 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.

[0056] The present invention arranges a second light source in the light source device which 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. Thus, a target white brightness mode can be realized in a display system with a wavelength conversion device, and a mode with high pure color brightness of the three primary colors can be compatible. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic diagram of functional modules of a display device provided by an embodiment of the present invention;

[0058] Figure 2 A schematic diagram of the structure of a display device provided by an embodiment of the present invention;

[0059] Figure 3 A schematic structural diagram of a light source device provided by an embodiment of the present invention;

[0060] Figure 4 A schematic structural diagram of another light source device provided by an embodiment of the present invention;

[0061] Figure 5-Figure 8 A schematic diagram of the structure of a wavelength conversion device provided by an embodiment of the present invention;

[0062] Fig. 9A schematic diagram of the timing of a light source device outputting three kinds of light according to an embodiment of the present invention;

[0063] Fig.10 A schematic diagram of the timing of a light source device outputting five kinds of light according to an embodiment of the present invention. DETAILED DESCRIPTION

[0064] In order to make those skilled in the art better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only 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 used to limit the present invention. Although the disclosure in the present invention is introduced according to one or several exemplary examples, it should be understood that each aspect of these disclosures can also constitute a complete technical solution separately. In the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0065] In the present invention, in order to facilitate the clear description of the technical solutions of the embodiments of the present invention, the words "first", "second" and the like are used to distinguish the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and execution order, and are only used to illustrate and distinguish the objects to be described. There is no distinction in order, nor does it indicate a special limitation on the number of devices or messages in the embodiments of the present invention, and cannot constitute any limitation on the embodiments of the present invention. "Multiple" means two or more, and similar words such as "include" or "comprising" mean that the element or object appearing before the word covers the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects.

[0066] 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.

[0067] Figure 1 A schematic diagram of functional modules of a display device provided by an embodiment of the present invention. Figure 1 As shown, the display device includes an image processor 101 and an optical engine 102. Among them:

[0068] The image processor 101 may be a microcontroller, a dedicated image processing chip, etc. The microcontroller may be an ARM chip, a microcontroller unit (MCU), etc. The dedicated image processing chip may be an image signal processor (ISP), a graphics processing unit (GPU), an embedded neural network processor (NPU), etc. The image processor 101 may be used for video decoding, image quality processing, etc.

[0069] The optical machine 102 may include a driver chip, a light modulator, and a light source. The light source may include a laser light source, an LED light source, a fluorescent light source, a UV light source, etc. The light modulator may be a digital micromirror device (DMD), a liquid crystal display (LCD), a liquid crystal on silicon (LCOS), etc., which is used to modulate the light source light to generate image light. The driver chip corresponds to the light modulator, for example, the digital micromirror device can be driven by a digital light processing element (DLP). The optical machine 102 is used to project the image to be projected into a projection screen.

[0070] In some embodiments, the display device further includes a central controller 103 with one or more processing cores, which may be a CPU, ARM, MCU or other controller. The central controller 103 is the control center of the display device, and uses various interfaces and lines to connect various parts of the entire display device, and can run or execute software programs and / or operating systems stored in the storage module 104, and call data stored in the storage module 104. Optionally, the image processor 101 and the central controller 103 may be integrated into one processor.

[0071] 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 Figure 1 The display device structure shown in the figure does not constitute a limitation on the display device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0072] 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, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the display device, etc. In addition, the storage module 104 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the storage module 104 can also include a memory controller to provide the central controller 103 with access to the storage module 104.

[0073] The display device may further include an input module 105, which may be used to receive input digital or character information and generate remote controller, keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0074] The display device may further 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 through 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.

[0075] 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 through a power management system, so as to manage charging, discharging, power consumption management, etc. through the power management system. The power supply 107 can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0076] Figure 2 A schematic diagram of the structure of a display device provided by an embodiment of the present invention. Figure 2 As shown, 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 on the light modulation device 203 through the illumination system 202. The light modulation device 203 modulates the incident light source light into image light and irradiates it into the imaging system 204, and finally images the image light onto a projection object such as a screen to form a projection picture. Among them, the light modulation device 203 can be any one of DMD, LCOS, and LCD; the imaging system 204 is generally a lens system, such as a projection lens.

[0077] In addition, the display device may further include a light source control module (not shown in the figure), which may control the operation of one or more light sources in the light source device 201 so that the light source device 201 emits light of a specified wavelength band required for generating an image. Further, 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 (refer to Figure 1 )middle.

[0078] 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. Further, 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 multicolor laser, i.e., a light emitting element array containing multiple lasers, such as the light source may contain a blue laser and a red laser, or contain a blue laser and a green laser, or contain a blue laser, a red laser, and a green laser at the same time.

[0079] The illumination system 202 is a part from the light source device 201 to the light modulation device 203 , and is used to irradiate the light source 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.

[0080] Figure 3 FIG. 1 is a schematic diagram of a light source device provided by an embodiment of the present invention. Figure 3 As shown, 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 to the wavelength conversion device 120 to generate a first light, and the first light and the second photosynthetic light generated by the second light source 130 form the output light of the light source device.

[0081] 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 as an example.

[0082] 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 substrate to move. The substrate may include one or more regions to generate one or more sub-lights. The motor drives the substrate to move, such as rotating, moving or swinging, so that multiple regions can be located on the optical path of the excitation light in a time sequence. Figure 3 In the embodiment shown, the wavelength conversion device 120 is of a transmissive type. In some other embodiments, the wavelength conversion device 120 may also be of a reflective type, such as Figure 4 As shown, the first light and the second light can be combined by a light combining element.

[0083] The second light source 130 may be a laser light source, an LED light source, or a fluorescent light source, etc. Further, 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 a light emitting diode that generates blue light, green light, or red light, etc., or the second light source 130 may be a multicolor laser, that is, a light emitting element array including multiple lasers, such as the second light source 130 may include a blue laser and a red laser, or include a blue laser and a green laser, or include a blue laser, a red laser, and a green laser at the same time.

[0084] Figure 5-Figure 8 Schematic diagram of the structure of the wavelength conversion device provided by the embodiment of the present invention. Figure 5 As shown, the wavelength conversion device is divided into three areas: red (R), green (G) and blue (B). The R area is provided with red or orange phosphor materials, and generates R light under the irradiation of the excitation light BLD. The G area is provided with green phosphor materials, and generates G light under the irradiation of the excitation light BLD. The B area may not be provided with phosphor materials, and generates B light after reflecting or scattering the excitation light BLD, or the B area is provided with cyan phosphor materials, and generates B light under the irradiation of the excitation light BLD. The RGB areas are located on the optical path of the excitation light BLD in a time sequence, and generate red, green and blue lights in sequence. It should be noted that in the embodiment of the present invention, the red, green and blue lights are called three primary colors, and the relative positions of the RGB areas can also be set as needed.

[0085] The second light generated by the second light source 130 may include one or more primary color lights. For example, the second light includes one primary color light. For example, if the second light is red light, when the output time of the second light is within the output time of the R light generated by the wavelength conversion device, that is, the second light source 130 is only lit when the R region is on the optical path of the excitation light BLD, the light source device generates three colors of light, RGB, in sequence. When the output time of the second light is greater than the output time of the R light generated by the wavelength conversion device, that is, the lighting time of the second light source 130 is greater than the time when the R region is on the optical path of the excitation light BLD, the output time of the second light will partially overlap with the output time of the G light and / or the B light generated by the wavelength conversion device to generate mixed color light. For example, the output time of the second light overlaps with the output time of the G light to generate yellow (Y) light, and the light source device generates four colors of light, RYGB, and in sequence. For example, the output time of the second light overlaps with the output time of the B light to generate magenta (M) light, and the light source device generates four colors of light, RGBM, and in sequence. For example, the output time of the second light overlaps with both the G light and the B light, and the light source device generates five colors of light, RYGB and M, in sequence. Preferably, the second light is a laser, and by mixing the fluorescence containing the laser spectrum with the laser, such as mixing red fluorescence with red laser or yellow fluorescence with red laser, the brightness can be increased while the speckle situation is greatly improved. It should be understood that the second light can also be green light 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 light, the light source device can output three RGB lights or four RYGB (or RGCB) lights or five RYGCB lights. If the second light is blue light, the light source device can output three RGB lights or four RGCB (or RGBM) lights or five RGCBM lights, where C light represents cyan light.

[0086] 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 region is on the optical path of the excitation light BLD, and the second light-emitting element is only lit when the G region is on the optical path of the excitation light BLD, the light source device generates three colors of light, RGB, in sequence. When the output time of the red light in the second light is greater 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 greater 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 greater 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 greater than the time when the G region is on the optical path of the excitation light BLD, the output time of the red light 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 to generate 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 light-emitting element and the second light-emitting element, the light source device can output three, four or five colors of light.

[0087] 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 light-emitting elements of the three colors in the second light source 130, the light source device may also output three, four or five colors of light, which will not be introduced in detail here.

[0088] The corresponding display mode can be set in the display device to correspond to the output light of the light source device to meet the different needs of users and improve the 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 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.

[0089] In some scenarios, even if the light source device supports three modes of outputting three lights, four lights, and five lights, a configuration file of the system can only support one mode and is not 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, switch to the corresponding memory to reload the configuration file. If it is necessary to be compatible with three modes at the same time, the storage unit includes three memories, each of which stores a configuration file. If it is necessary to be compatible with two modes 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. Optionally, the method of storing multiple sets of configuration files is not limited to correspondingly using multiple memories. For example, multiple sets of configuration files can be stored in one memory, and different boot addresses are used to load different configuration files. For example, the storage unit includes a third memory, and the third memory stores the first configuration file and the second configuration file (the display device is compatible with two modes). The three sets of configuration files can also be stored in two memories. Furthermore, multiple modes of configuration can be included in one configuration file at the same time, and the modes can be switched by loading different configurations in one configuration file.

[0090] In some embodiments, the wavelength conversion device may also include four regions, such as Figure 6 As shown, the first light includes four kinds of light, RGBY, and by controlling the lighting time of the excitation light source and / or the second light source, Figure 6 The light source device of the wavelength conversion device of the embodiment shown may also output three kinds of light, RGB, or five kinds of light, RYGCB. In some other embodiments, the wavelength conversion device may include five regions, such as Figure 7 As shown, the first light includes five kinds of light, RGBCY, and by controlling the lighting time of the excitation light source and / or the second light source, Figure 7 The light source device of the wavelength conversion device of the illustrated embodiment may also output three types of light, RGB, or four types of light, RGBY (or RGCB).

[0091] Figure 5In the illustrated embodiment, when the partitions of the wavelength conversion device are fixed, the duty cycles of red, green and blue are also fixed. Although the output time of one or more of the three RGB lights can be reduced to adjust the duty cycle, the sum of the RGB duty cycles will be less than 100%, resulting in the need to sacrifice brightness. Figure 6 and Figure 7 In the illustrated embodiment, although the light source device can output three types of RGB light by controlling the lighting time of the excitation light source and / or the second light source, the time for the light source device to output light will be reduced. For example, if the wavelength conversion device includes four regions of RGBY, when the light source device outputs three types of RGB light, there is no light output in the Y region, thereby resulting in reduced brightness.

[0092] See also Figure 8 The wavelength conversion device includes two zones, such as R zone and G zone, or R zone and B zone, or G zone and B zone. Specifically, the wavelength conversion device includes a first zone and a second zone, and the sum of the distribution angles of the first zone and the second zone is equal to 360 degrees. The first zone is used to generate a first primary color light under the irradiation of the excitation light, and the second zone 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.

[0093] For example, the excitation light source is lit in the first time, the first area is located on 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 on 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, in 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 on 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 on 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, the second light source is turned off in the fourth sub-time, the excitation light source is lit, the second area is located on the optical path of the excitation light to generate the third primary color light, that is, in 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, in the first sub-time, the excitation light source is lit, the first area is located on the optical path of the excitation light to generate the first primary color light, in the second sub-time, the excitation light source is kept lit, the first area is still located on the optical path of the excitation light to generate the first primary color light, and 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, in 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, in 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 on the optical path of the excitation light to generate 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, in 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 on the optical path of the excitation light to generate the third primary color light, that is, in one lighting cycle, the light source device generates five kinds of light, namely, 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 only lit when the first area of ​​the wavelength conversion device is located on the optical path of the excitation light, and 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 only lit when the second area of ​​the wavelength conversion device is located on 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 in advance as needed.

[0094] 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.

[0095] 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 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 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.

[0096] 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 kinds of light, four kinds of light, or five kinds of light, so that the display device can be compatible with a variety of display modes to meet different needs, and 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 zones, one of the two zones is used to generate a first sub-light under the irradiation of the excitation light, and the other of the two zones 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, 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, and the second light generated by the second light source includes the second primary color light, or the spectrum of the first sub-light includes the spectrum of one of the first primary color light and the third primary color light, the spectrum of the second sub-light includes the spectrum of the second primary color light, and the second light generated by the second light source includes the second primary color light and the other of the first primary color light and the third primary color light.

[0097] Optionally, the wavelength conversion device may also include only one area, such as a first area, the distribution angle of the first area is equal to 360 degrees, the second light includes the second primary color light and the third primary color light (may also include the first primary color light), and the light source device can also output three lights or four lights or five lights, so as to achieve the same Figure 8 The same effect as the embodiment shown is achieved, but the second light source must include at least two light-emitting elements.

[0098] Continue reading Figure 8 The following description is made by taking the 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.

[0099] When it is necessary to realize that the light source device generates three kinds of light in sequence. Only B and G are divided on the wavelength conversion device, for example, the G area occupies 60% and the B area occupies 40%; when it is desired to realize a duty cycle of RGB of 33%, 34%, and 33% respectively, it is first necessary to synchronize the rotation state of the wavelength conversion device 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, etc.), such as a sensor is set at a fixed position of the substrate of the wavelength conversion device, and a position signal is generated when another fixed sensor detects the sensor on the substrate. For example, a black glue is attached to a fixed position of the motor of the wavelength conversion device, such as the boundary line between the B area and the G area, and a fixed photodiode is aligned with the motor. When the motor rotates to the black glue position, a high-level signal will be fed back, which is used to synchronize with the control signal of the light source. When the device is running, the motor will first be controlled to a fixed speed, thereby calculating the time occupied by each area on the wavelength conversion device. For example, if the rotation speed is 120Hz, then the time for one revolution is 8.33ms. The G zone occupies 60%, so the corresponding time for the G zone is 5ms, and the time for the B zone is 3.3ms. From this, the time it takes for the wavelength conversion device to rotate to each position can be calculated. For example: it is necessary to achieve a duty cycle of 34% for G, that is, the excitation light source is not lit for the first 26% of the G zone and the excitation light source is lit for the next 34%. The corresponding time is that the excitation light source is not lit for the first 2.17ms and the excitation light source is lit for the next 2.83ms. When the wavelength conversion device rotates to the boundary line between the B zone and the G zone, the photodiode will feedback a high-level signal. The synchronization module starts timing after receiving the feedback signal. When the timing reaches 2.17ms, the excitation light source is lit. The control of other duty cycles is similar. When the wavelength conversion device rotates to the G zone and there is 34% left in the G zone, the excitation light source is lit and the second light source is turned off. When the wavelength conversion device rotates to 33% of the B zone, the excitation light source is turned off, and the red light source in the second light source is lit at the same time, generating Fig. 9Similarly, when other RGB duty cycles need to be realized, it is only necessary to light up and turn off the corresponding light source when the wavelength conversion device rotates to the corresponding position. This example can realize the adjustment of B duty cycle from 0%-40%, G duty cycle from 0%-60%, and R duty cycle from 0%-100%.

[0100] In some embodiments, the zones on the wavelength conversion device can be divided according to 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, at this time, the B zone and the 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%. The following is an exemplary method for calculating the target duty cycle of RGB:

[0101]

[0102] Among them, d R represents the target duty cycle of the 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 when the influence of the duty cycle is not considered.

[0103] After the target duty cycle of RGB is calculated according to the above formula, the partitions on the wavelength conversion device can be divided according to the target duty cycle. For example, the calculated target duty cycle of RGB is: R20%, G50%, B30%. If the wavelength conversion device is divided into only 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 divided into only 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. Only B and G are divided on the wavelength conversion device, for example, the G area occupies 60% and the B area occupies 40%; when you want to realize a RGBYC duty cycle of 27.6%, 20.8%, 31.6%, 12%, and 8% respectively, the light source control principle is similar to the above-mentioned generation of three kinds of light. 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 Y light is generated after the light is combined. Only G light exists from the time when the red light source is turned off to the boundary line between the G area and the B area, and G light and B light exist at the same time from the boundary line to the time when the green light source is turned off, and C light is generated after the light is combined. Generation Fig.10 Similar to the above three types 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 RGB duty cycle distribution when the light source device generates three kinds of light (corresponding to the second mode) is R33%, G34%, and B33%; if the light source device generates five kinds 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 switching time of the excitation light source and / or the second light source can be adjusted through the synchronization module 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 embodiment of the present invention may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a dedicated processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and / or other suitable components that support the described functions. The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the embodiment of the present invention. The division of the modules is only a logical function division, and there may be other division methods in actual implementation, such as a module or component can be divided into multiple modules or components, or multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or modules, which can 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. Professional and technical personnel 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 is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope 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 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 sequence, the output time 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 time 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 time 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.

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 a target display mode of the display system. When the target display mode of the display system changes from a first mode to a second mode or from a second mode to a 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 satisfies 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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