WO2020135305A1 - Light source system, diaplay device and light source control method - Google Patents

Abstract

Disclosed is a light source system (10), comprising: a first light source (11) used for outputting a first light and a second light source (12) used for outputting a second light, the first light and the second light can combine in different proportions to realize different display color gamuts, and the range of realizable display color gamuts for the first light includes that for the second light; a controller (14) connecting the first light source (11) and the second light source (12), used for controlling the proportions of the first light output by the first light source (11) and the second light output by the second light source (12) according to the color gamut mode of a current image to be displayed; and an optical filter group (13) with a corresponding optical filter therein being switched to a light emitting path according to the color gamut mode of the image so as to perform filtering processing to the first light and/or the second light, thus obtaining light of a target light source matching the color gamut mode of the image. The light source system improves the display effect. Further provided by the invention are a display device (20) and a light source control method.

Description

Light source system, display device and light source control method Technical field

The present invention relates to the field of lighting and display technologies, and in particular, to a light source system, a display device including the light source system, and a light source control method.

Background technique

With the rapid development of display technology, there is a higher pursuit of picture quality and color display, and BT.2020 color gamut space came into being.

At present, the most widely used display color gamut space is DCI, which only accounts for 78% of the color display ratio of the BT.2020 color gamut. The main scope of these excesses is reflected in green. The 2020 color gamut can reflect these green possibilities, so that when the movie is shown, such as some tropical rain forest pictures, the effect of this color gamut projector will be more dazzling.

The current three-color laser RGB three-primary color laser projector has a wide range of color gamut space coverage, which can meet the BT.2020 color gamut's pursuit of extreme color display. However, green lasers are relatively expensive, and the cost of pure laser projectors is too high, so the color gamut of DCI is still the standard for theater projection.

Then, under the above background, when displaying a DCI color gamut standard screen, if a three primary color laser projector (supporting BT.2020 color gamut) is used for projection, there will be a large part of green, which exceeds the DCI standard. Relatively speaking, this part of the color does not contribute to the display of the DCI color gamut standard screen, which is sacrificed unhelpfully. Moreover, at the same time, the green laser needs to input electric power and output heat, which also causes the overall energy loss of the projector and a lot of heat dissipation requirements. Therefore, when the three-laser RGB three primary color light source uses a color gamut space lower than BT.2020, it The advantage of is relatively unusable, which leads to the fact that although it can support a wider color gamut, it is not practical.

Another commonly used light source form is laser plus fluorescence. In this light source mode, usually, the ratio of fluorescence is increased to increase the brightness. However, when using a laser plus fluorescence light source, without a filter, Based on the requirements of the color space, the fluorescence that can be increased is limited, and the use of fluorescence to increase the brightness also has a limited increase in the overall brightness. Then, to achieve a high-brightness color gamut can only be achieved by increasing the power of the laser. When increasing the laser power, generally increase the green Laser power. However, due to the low efficiency of the green laser, the overall cost will increase, and the advantage is not obvious compared with the pure laser light source system; and, after increasing the laser power, the fluorescence ratio is reduced, resulting in a serious speckle effect, and additional hardware or/ Software designed to eliminate speckle.

Summary of the invention

An aspect of the present invention provides a light source system, including:

The first light source is used to output the first light;

The second light source is used to output the second light;

The first light and the second light can be combined in different proportions to achieve different display color gamuts. The display color gamut range that the first light can realize includes the display color gamut range that the second light can realize;

A controller connected to the first light source and the second light source, and used to control the first light output by the first light source and the second light source to output according to the color gamut mode of the image to be displayed currently The ratio of the second light;

The filter group, according to the color gamut mode of the image to be displayed, switches the corresponding filter in the filter group to the light exit path to filter the first light and/or the second light After processing, the target light source light matched with the color gamut pattern of the image to be displayed is obtained.

Another aspect of the present invention provides a display device including a light modulator according to any one of the above light source systems;

The light modulator is used to modulate the light of the target light source so that the display device displays the current image to be displayed.

Another aspect of the present invention provides a light source control method, including the following steps:

Step S1: Analyze the color gamut mode of the current image to be displayed;

Step S2: Control the first light source to output the first light and/or the second light source to output the second light according to the color gamut mode of the current image to be displayed; the color gamut range of the image that the first light can display includes the first Two-light displayable color gamut range;

Step S3: Determine the filter range according to the color gamut mode of the current image to be displayed, and filter the first light and/or the second light according to the filter range to obtain the target light source. The color gamut pattern of the target light source matches the color gamut pattern of the current image to be displayed.

A light source system provided by an embodiment of the present invention includes a controller, a first light source, a second light source, and a filter set. The controller adjusts the first light source output and the second light source output according to the color gamut mode of the image to be displayed currently The ratio of the second light, and then filtering the first light and/or the second light through a corresponding filter in the filter group to obtain target light source matching the color gamut pattern of the image to be displayed.

On the one hand, the color gamut mode of the target light source can be switched according to the current color gamut mode of the image to be displayed to match it with the color gamut mode of the image to be displayed, which improves the practicality of the light source system and avoids the light source system in the prior art The color gamut mode is wider than the color gamut mode of the image to be displayed, which results in a waste of light energy and an increase in the cost of the light source system.

On the other hand, in the embodiment of the present invention, by selecting the filter in the filter group corresponding to the current image to be displayed, the spectrum of a specific frequency band in the first light and/or the second light is cut off, and the color is retained closest to The spectrum required by the current color gamut mode of the image to be displayed improves the image display effect when the color gamut of the image display is satisfied; at the same time, different filters are set to control the pass rate of light in a specific frequency band, and different combinations of different combinations are realized. The light source light is controlled to avoid filtering out too much second light, resulting in the light source brightness being too low. In addition, since the ratio of filtering out the second light can be effectively controlled, the additional first light is avoided to increase the brightness of the target light source, which can effectively weaken the speckle effect caused by the first light, without the need for additional hardware to eliminate speckle Or/and software design, saving the cost of the light source system.

BRIEF DESCRIPTION

FIG. 1 is a schematic structural diagram of a light source system provided in Embodiment 1 of the present invention.

2 is a schematic diagram of a filter set provided by an embodiment of the present invention.

FIG. 3 is a schematic diagram of another filter set provided by an embodiment of the present invention.

4 is a schematic structural diagram of a display device according to Embodiment 2 of the present invention.

FIG. 5 is a schematic flowchart of a light source control method according to an embodiment of the present invention.

Symbol description of main components

The following specific embodiments will further illustrate the present invention with reference to the above drawings.

Light source system	10
First light source	11
First sub-light source	111
Second sub-light source	112
Third output module	113
Second light source	12
Color wheel	121
axis	O
Excitation light source	122
Filter set	13
First filter	131
Second filter	132
Controller	14
Light guide structure	15
Semi-reverse semi-permeable membrane	151
First lens	152
Second lens	153
Third lens	154
Fourth lens	155
Fifth lens	156
Sixth lens	157
Display device	20
Optical modulator	twenty one
step	S1, S2, S3

detailed description

The variable color gamut light source system provided by the embodiment of the present invention can realize the color gamut mode of the target light source light according to the current color gamut mode of the image to be displayed, so as to match the color gamut mode of the current image to be displayed, so the light source can be improved The practicability of the system; and, set a filter group, according to the color gamut mode of the image to be displayed to switch the corresponding filter in the filter group to the light exit path, to the first light and / or The second light is filtered to obtain light source light with better chromaticity display.

Example one

The specific structure and principle of the variable color gamut light source system provided by the embodiments of the present invention will be described in detail below with reference to the drawings.

Please refer to FIG. 1. In this embodiment, the light source system 10 can be applied to various display devices, such as a projector. Taking the application in a projector as an example, the projector can perform a series of data processing according to the received image information, and finally project an image that is visible to the human eye. The above-mentioned received image information is in this embodiment. 'S current image to be displayed.

As shown in FIG. 1, the light source system 10 includes a first light source 11, a second light source 12, a filter set 13, and a controller 14.

The first light source 11 is used to output first light.

The second light source 12 is used to output second light.

The first light and the second light can be combined in different proportions to achieve different display color gamuts. The display color gamut range that can be realized by the first light includes the display color gamut range that can be realized by the second light.

The controller 14 is connected to the first light source 11 and the second light source 12 for controlling the ratio of the first light source 11 to output the first light and the second light source 12 to output the second light according to the color gamut mode of the current image to be displayed.

The filter group 13, according to the color gamut mode of the image to be displayed, switches the corresponding filter in the filter group 13 to the light exit path to filter the first light and/or the second light to obtain The color gamut pattern of the image matches the target light source.

In this embodiment, the first light is laser light, and the first light includes at least two colors of primary color laser light. Specifically, the above-mentioned primary color lasers refer to red, green, and blue primary color lasers.

In an embodiment, the first light source 11 includes a first sub-light source 111 and a second sub-light source 112. Specifically, the first sub-light source 111 and the second sub-light source 112 output lasers of different colors, then the first light source 11 outputs lasers of any two colors of red, green, and blue, respectively, and the first light source 11 as a whole outputs at least two types of lasers Primary color laser. Please refer to FIG. 1. In this embodiment, the first light source 11 only includes a first sub-light source 111 and a second sub-light source 112. The first sub-light source 111 and the second sub-light source 112 are both lasers, which are used to output red laser light and Green laser.

Please continue to refer to FIG. 1. The second light source 12 includes a color wheel 121 and an excitation light source 122. The excitation light source 122 is used to output excitation light to the color wheel 121. Part of the excitation light is converted into laser light, so that the color wheel 121 emits laser light The combined light of the converted part of the excitation light, and the combined light of the laser light and the unconverted part of the excitation light is the second light. The excitation light source 122 is a laser and is used to output primary color laser light. The color wheel 121 is a disk rotatable around the axis O, and different fluorescent materials are arranged in different regions on the disk. By controlling the rotation of the color wheel 121, the laser light output from the excitation light source 122 is projected on the above-mentioned different time-sharing areas. At least two fluorescent materials are provided on the color wheel 121. When the laser light output from the excitation light source 122 is projected on a certain area At this time, the fluorescent material on this area is stimulated to radiate the corresponding color of fluorescence (ie, received laser light).

In one embodiment, the fluorescence emitted by the color wheel 121 includes at least two colors of primary fluorescence. In this embodiment, the color wheel 121 includes two types of fluorescent materials disposed on two areas, and the excitation light source 122 emits blue laser light. When the blue laser is time-divisionally projected on two different areas on the color wheel , The color wheel outputs red fluorescence and green fluorescence in time-sharing.

The controller 14 is electrically connected to the first sub-light source 111, the second sub-light source 112, and the excitation light source 122, respectively. The controller 14 is used to acquire the color gamut mode of the current image to be displayed, and control the color gamut mode according to the current image to be displayed. The first light source 11 outputs the first light, and controls the second light source 12 to output the second light. The output ratio of the first light and the second light matches the color gamut mode of the image to be displayed currently. The controller 14 controls the output ratio of the first light and the second light by controlling the currents of the first sub-light source 111, the second sub-light source 112, and the excitation light source 122.

The laser light output by the first light source 11 (ie the first light) or/and the fluorescence output by the second light source 12 and the unconverted part of the excitation light (ie the second light) are transmitted to the filter group 13 according to the current image to be displayed The color gamut mode of the corresponding filter in the filter group 13 is switched to the light output path to filter the first light and/or the second light to obtain a target that matches the color gamut mode of the current image to be displayed The light source emits light.

Specifically, the filter group 13 includes at least two filters, and each filter includes a substrate and a filter layer formed on the substrate. Among them, the main difference of each filter is that the filter range is different, that is, different filters are used to filter light in different frequency ranges.

In this embodiment, the filter group 13 includes a first filter 131 and a second filter 132. According to the current color gamut mode of the image to be displayed, the first filter 131 or the second filter 132 is switched to the light exiting path of the first light and/or the second light.

The first filter 131 corresponds to the first color gamut mode. When the color gamut mode of the image to be displayed is the first color gamut mode, the first light and/or the second light is filtered by the first filter 131; The second filter 132 corresponds to the second color gamut mode. When the color gamut mode of the image to be displayed is the second color gamut mode, the first light and/or the second light passes through the second filter 132 for filtering.

Please refer to FIG. 2. In one embodiment, the filter set 13 has a disc shape as a whole, and can be rotated in the plane of the disc. By rotating the filter set 13, the first filter 131 or the second filter can be switched From the light sheet 132 to the exit light path of the first light or/and the second light, the first light or/and the second light is filtered. Specifically, the rotation of the filter set 13 can be realized manually by a simple person, or automatically controlled by the controller 14. For example, after obtaining the color gamut mode of the current image to be displayed, confirm that light in a specific frequency band needs to be filtered according to the color gamut mode (this can be achieved by referring to the correspondence table between the pre-stored color gamut mode and the frequency band to be filtered) , The corresponding filter in the filter group 13 is switched to the light path of the first light or/and the second light.

Or, referring to FIG. 3, in another embodiment, the filter group 13 is configured to be displaced along a preset direction, then the filter group 13 can be moved along the above-mentioned preset direction to Switching the first filter 131 or the second filter 132 to the light path of the first light or/and the second light, and filtering the first light or/and the second light. Specifically, the moving filter group 13 can be implemented manually by a simple person, or automatically controlled by the controller 14. For example, after obtaining the current color gamut mode of the image to be displayed, confirm which frequency band light needs to be filtered according to the color gamut mode (this can be achieved by referring to the pre-stored correspondence table between the color gamut mode and the frequency band to be filtered), then Switch the corresponding filter in the filter group 13 to the light exiting path of the first light or/and the second light.

In FIGS. 2 and 3, two possible structures of the filter set 13 are shown. In other embodiments, the first filter 131 and the second filter 132 may have other positional relationships. In an embodiment, the light source system 10 can support displaying more than two color gamut modes, then the filter set 13 includes not only the first filter 131 and the second filter 132, but also a third filter , The fourth filter, etc., the number of filters in the filter group 13 is not limited here.

Please continue to refer to FIG. 1. The light source system 10 in this embodiment further includes a light guide structure 15, which is used to guide the first light and/or the second light to propagate to the filter set in a preset manner. The above preset method depends on the way of constructing the light path in the light source system. It can be understood that the first light emitted by the first light source 11 and the second light emitted by the second light source 12 can reach the filter group 13 in various ways . In this embodiment, as shown in FIG. 1, the exit direction of the second light from the second light source 12 and the exit direction of the first light from the first light source 11 are perpendicular to each other. The light guide structure 15 includes a semi-transparent semi-transparent film 151 The transmission film 151 is disposed at an angle of 45° with respect to the exit directions of the first light and the second light.

The light source system 10 in this embodiment further includes a uniform light structure 16, specifically, as shown in FIG. 1, the uniform light structure 16 is a uniform light square bar. It is disposed between the filter set 13 and the semi-transparent semi-transparent film 151; the semi-transparent semi-transparent film 151 is disposed between the first light source 11 and the uniform light structure 16, and the second light source 12 and the uniform light structure 16. The first light emitted from the first light source 11 reaches the transflective film 151 and is reflected into the uniform light structure 16, the second light emitted from the second light source 12 reaches the transflective film 151, and its propagation direction does not occur The change is directly transmitted into the uniform light structure 16.

The above-mentioned first light and/or second light enters the uniform light structure 16 to perform uniform light treatment, so as to make it more uniform, and further, to make the display effect of the current image to be displayed better after the final exit, and improve the user viewing experience.

More specifically, the above-mentioned light guide structure 15 further includes a first lens 152, a second lens 153, a third lens 154, a fourth lens 155, a fifth lens 156, and a sixth lens 157. Because the fluorescence emitted from the second light source 12 has a large divergence angle, in order to reach as much as possible of the second light to the transflective film 151, it will not be lost during the propagation process, and the second light needs to be condensed. The first lens 152 and the second lens 153 between the color wheel 121 and the transflective film 151 will eventually cause the second light to reach the transflective film 151 in a parallel state and pass through the third lens 154 The first light and/or the second light emitted from the semi-transparent semi-transparent film 151 converges, so that as much light as possible enters the uniform light structure 16 to reduce light loss and improve light utilization. Further, the fourth lens 155, the fifth lens 156, and the sixth lens 157 also converge the first light and/or the second light, thereby improving light utilization. I won't repeat them one by one here.

The light source system 10 provided in this embodiment includes a first light source 11, a second light source 12, a controller 14, and a filter set 13. The controller 14 adjusts the first light source 11 to output the first light according to the color gamut mode of the image to be displayed currently And the ratio of the second light source 12 outputting the second light, and then filtering the first light and/or the second light through the corresponding filter in the filter group 13 to obtain the color gamut of the image to be displayed Pattern matching target light source.

On the one hand, the color gamut mode of the target light source can be switched according to the current color gamut mode of the image to be displayed to match it with the color gamut mode of the image to be displayed, which improves the practicality of the light source system and avoids the light source system in the prior art The color gamut mode is wider than the color gamut mode of the image to be displayed, which results in a waste of light energy and an increase in the cost of the light source system.

On the other hand, in the embodiment of the present invention, by selecting the filter in the filter group 13 corresponding to the current image to be displayed, the spectrum of a specific frequency band in the first light and/or the second light is cut off, and the color is retained. The spectrum close to the current color gamut mode of the image to be displayed, in the case of satisfying the image display color gamut, improve the image display effect; at the same time, set different filters to control the pass rate of light in a specific frequency band, to achieve different combinations of different combinations The control of the light source of the light source avoids filtering out too much second light, resulting in the brightness of the light source being too low. In addition, since the ratio of filtering out the second light can be effectively controlled, the additional first light is avoided to increase the brightness of the target light source, which can effectively weaken the speckle effect caused by the first light, without the need for additional hardware to eliminate speckle Or/and software design, saving the cost of the light source system.

Example 2

Referring to FIG. 4, this embodiment provides a display device 20 including a light modulator 21 and the light source system 10 as described in the first embodiment. In this embodiment, the above-mentioned display device is a projector. The display device 20 can receive the current image to be displayed, analyze the color gamut mode of the current image to be displayed through the light source system 10, and control the first light source 11 to output the first light and the second light source 12 to output the second light according to the color gamut mode of the current image to be displayed The proportion of light to meet the display needs of different color gamuts. Combined with the filter group 13, a filter corresponding to the current image to be displayed in the filter group 13 is selected, and the first light and/or the second light is filtered, so that the target light source light finally emitted The color gamut mode of the current image matches the color gamut mode of the current image to be displayed. After the target light source is modulated by the light modulator 21, the current image to be displayed can be displayed.

It should be understood that the display device 20 in this embodiment can achieve all the beneficial effects of the light source system 10 in the first embodiment.

Example Three

Referring to FIG. 5, the light source control method provided in this embodiment can be applied to the light source system 10 in Embodiment 1 and the display device 20 in Embodiment 2; it includes the following steps:

Step S1: Analyze the color gamut mode of the current image to be displayed;

Step S2: Control the first light source to output the first light and/or the second light source to output the second light according to the color gamut mode of the current image to be displayed; the first light and the second light can be combined in different proportions to achieve different Display color gamut, the display color gamut range achievable by the first light includes the display color gamut range achievable by the second light;

Step S3: Determine the filter range according to the color gamut mode of the current image to be displayed, filter the first light and/or the second light according to the filter range to obtain the target light source, and the color gamut mode of the target light source is The color gamut pattern of the current image to be displayed matches.

Step S3 is specifically:

According to the color gamut mode of the current image to be displayed, determine the filter range corresponding to the color gamut mode of the current image to be displayed by querying the correspondence table between the pre-stored color gamut mode and the filter range;

According to the filter range, a filter corresponding to the filter range is selected from the filter group, and the first light and/or the second light is filtered with the selected filter to obtain the target light source light.

In step S1, the color gamut mode of the current image to be displayed is analyzed. The specific process is:

The controller 14 receives the current image to be displayed, and the current image to be displayed has its specific color gamut mode, then the controller 14 analyzes the image to be displayed to obtain its color gamut mode (for example, DCI, BT.2020, etc.), specifically, The controller 14 obtains the color coordinates of each pixel of the image to be displayed according to the original image data of the image to be displayed. The range defined by the color coordinates of each pixel of the image to be displayed is the color gamut range of the image to be displayed, so that the controller 14 Obtain the color gamut mode of the image to be displayed (one color gamut mode corresponds to one color gamut range).

Further, according to the color gamut mode of the image to be displayed, the controller 14 determines that the current light source system needs to satisfy the color gamut mode required to display the image to be displayed (it should be understood that the color gamut mode satisfying the display needs here should be The color gamut mode of the image to be displayed is wider or equal, but the difference between the two needs to be controlled within a preset range to meet the needs of saving light energy, because when the difference is too large, the light source system provides a large Part of the light energy will be wasted).

In step S2, after the controller 14 determines the power to output the first light and the second light in the above manner, the first light source 11 is controlled to output the first light, and the second light source 12 is controlled to output the second light.

In step S3, after the combined light of the first light and/or the second light is filtered by the filter group 13, the target light source light is output from the filter group 13, and the color gamut mode of the target light source is provided with The color gamut pattern of the current image to be displayed matches.

Specifically, according to the current color gamut mode of the image to be displayed, a pre-stored correspondence table between the color gamut mode and the filter range is queried. The correspondence relationship between different color gamut modes and different filter ranges is defined in the table. According to the color gamut mode of the current image to be displayed, the filter range corresponding to the color gamut mode of the current image to be displayed is queried. For example, the color gamut mode of the image to be displayed is the DCI color gamut, and the corresponding DCI color gamut is found in the table. If the filtering range is outside the range of 560nm-600nm, select the corresponding filter in the filter group 13 to switch to the light exit path of the first light and/or the second light according to the searched filter range. One light and/or the second light is filtered to obtain the target light source.

Wherein, the manner of selecting the filter corresponding to the filter range may include, but is not limited to, controlling the rotation of the filter set 13 or generating a displacement in a preset direction to select the filter corresponding to the filter range. The control process may be operated by humans or may be executed by the controller 14.

The light source control method provided in this embodiment, on the one hand, can realize the switching of the color gamut mode of the target light source according to the current color gamut mode of the image to be displayed, so as to match it with the color gamut mode of the image to be displayed, thereby improving the practicality of the light source system In this way, the color gamut mode of the light source system in the prior art is wider than the color gamut mode of the image to be displayed, which causes waste of light energy and increase of the cost of the light source system.

On the other hand, select the filter in the filter group 13 corresponding to the current image to be displayed, cut off the spectrum of a specific frequency band in the first light and/or the second light, and retain the color closest to the current image to be displayed The spectrum required by the color gamut mode improves the image display effect when the color gamut of the image display is satisfied; at the same time, different filters are set to control the pass rate of light in a specific frequency band to achieve different combinations of light source light control , To avoid filtering out too much second light, resulting in the brightness of the light source is too low. In addition, since the ratio of filtering out the second light can be effectively controlled, the additional first light is avoided to increase the brightness of the target light source, which can effectively weaken the speckle effect caused by the first light, without the need for additional hardware to eliminate speckle Or/and software design, saving the cost of the light source system.

It should be noted that, in the embodiment of the present invention, the ratio of the first light to the second light in the light source can be allocated in real time according to the image to be displayed, or the ratio of the first light to the first light can be pre-modulated according to display requirements. Similarly, the filter switching in the light source system can be switched either in real time according to the image to be displayed or in advance.

The above are only the embodiments of the present invention, and therefore do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly used in other related technologies The field is equally included in the scope of patent protection of the present invention.

Claims (10)

1. A light source system, characterized in that it includes:

   The first light source is used to output the first light;

   The second light source is used to output the second light;

   The first light and the second light can be combined in different proportions to achieve different display color gamuts. The display color gamut range that the first light can realize includes the display color gamut range that the second light can realize;

   A controller connected to the first light source and the second light source, and used to control the first light output by the first light source and the second light source to output according to the color gamut mode of the image to be displayed currently The ratio of the second light;

   The filter group, according to the color gamut mode of the image to be displayed, switches the corresponding filter in the filter group to the light exit path to filter the first light and/or the second light After processing, the target light source light matched with the color gamut pattern of the image to be displayed is obtained.
2. The light source system according to claim 1, wherein the filter ranges of the filters in the filter set are different.
3. The light source system according to claim 1, wherein the filter set includes a first filter and a second filter;

   The first filter and the second filter can be rotated about the same axis, and the first light and/or the second light can be passed by rotating the first filter and the second filter The first filter or the second filter is passed to obtain the target light source light.
4. The light source system according to claim 1, wherein the filter set includes a first filter and a second filter;

   The first filter and the second filter may be displaced along the same preset direction, and the first light and/or the The second light passes through the first filter or through the second filter to obtain the target light source light.
5. The light source system according to claim 1, wherein the first light source is a laser light source, and the second light source is a laser fluorescent light source.
6. A display device, comprising a light modulator and the light source system according to any one of claims 1 to 5;

   The light modulator is used to modulate the light of the target light source so that the display device displays the current image to be displayed.
7. A light source control method, characterized in that it includes the following steps:

   Step S1: Analyze the color gamut mode of the current image to be displayed;

   Step S2: Control the first light source to output the first light and/or the second light source to output the second light according to the color gamut mode of the current image to be displayed; the display color gamut range that can be achieved by the first light includes the first The range of display color gamut that can be achieved by two light;

   Step S3: Determine the filter range according to the color gamut mode of the current image to be displayed, and filter the first light and/or the second light according to the filter range to obtain the target light source. The color gamut pattern of the target light source matches the color gamut pattern of the current image to be displayed.
8. The light source control method according to claim 7, wherein the step of determining the filter range according to the color gamut mode of the current image to be displayed is specifically:

   According to the color gamut mode of the current image to be displayed, the filter range corresponding to the color gamut mode of the current image to be displayed is determined by querying a pre-stored correspondence table of the color gamut mode and the filter range.
9. The light source control method according to claim 8, wherein the step of filtering the first light and/or the second light to obtain the target light source according to the filtering range is specifically:

   According to the filter range, select a filter corresponding to the filter range from the filter group, filter the first light and/or the second light to obtain the target light source .
10. The light source control method according to claim 9, wherein the filter group includes a plurality of filters; and the step of selecting a filter corresponding to the filter range from the filter group Specifically:

    Select the filter corresponding to the filter range by controlling the rotation of the filter set or generating displacement in a preset direction.

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