Light source module, backlight module and display equipment

Abstract

The invention discloses a light source module, a backlight module and display equipment, and relates to the technical field of display, and the light source module comprises a first light-emitting device and a second light-emitting device; the light-emitting side of the first light-emitting device is provided with a main lens, and the light-emitting side of the second light-emitting device is provided with an auxiliary lens. The main lens and the auxiliary lens are different in light path regulation and control principle, and the auxiliary lens is used for compensating light-emitting brightness distribution of the light source module. The overall light emitting uniformity of the light source module is effectively improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a light source module, a backlight module, and a display device. Background Technology

[0002] In recent years, with the continuous development of the consumer electronics and display terminal market, users have increasingly higher requirements for the performance of various light source components, including LCD displays and backlight modules. Light emission quality, especially the uniformity of light field distribution and the consistency of brightness, has become a key indicator for measuring the overall performance of related products.

[0003] However, currently, in order to control the light source by focusing, diffusing, or collimating, a single type of optical lens is generally configured on the light-emitting side of the light-emitting device. Although this approach has certain advantages in terms of simplifying the structure and controlling costs, it often suffers from poor overall illumination uniformity. Summary of the Invention

[0004] The main purpose of this application is to provide a light source module, a backlight module, and a display device. This application effectively improves the uniformity of light output from the light source module.

[0005] To achieve the above objectives, this application provides a light source module, which includes: a first light-emitting device and a second light-emitting device; The first light-emitting device is provided with a main lens on its light-emitting side, and the second light-emitting device is provided with an auxiliary lens on its light-emitting side. The main lens and the auxiliary lens have different optical path control principles. The auxiliary lens is used to compensate for the output brightness distribution of the light source module.

[0006] In one embodiment, when the optical mixing distance of the light source module is greater than or equal to a preset distance threshold, the second light-emitting device is disposed on the periphery of the first light-emitting area.

[0007] In one embodiment, when the optical mixing distance of the light source module is greater than or equal to a preset distance threshold, the main lens is a refractive lens and the auxiliary lens is a reflective lens.

[0008] In one embodiment, when the optical mixing distance of the light source module is less than a preset distance threshold, the first light-emitting device is arranged around the second light-emitting device.

[0009] In one embodiment, when the optical mixing distance of the light source module is less than a preset distance threshold, the main lens is a reflective lens and the auxiliary lens is a refractive lens.

[0010] In one embodiment, the first light-emitting device and the second light-emitting device are arranged in rows and / or columns in the light source module.

[0011] In one embodiment, the first light-emitting device includes at least one of LED and miniLED.

[0012] In one embodiment, the second light-emitting device includes at least one of LED and miniLED.

[0013] In one embodiment, the light source module further includes: a first driving circuit and a second driving circuit, wherein the first driving circuit is electrically connected to the first light-emitting device and the second driving circuit is electrically connected to the second light-emitting device.

[0014] In addition, to achieve the above objectives, this application also proposes a backlight module, which includes the light source module as described above.

[0015] In addition, to achieve the above objectives, this application also proposes a display device, which includes a light source module as described above, or a backlight module as described above.

[0016] One or more technical solutions proposed in this application have at least the following technical effects: A light source module is provided, including a first light-emitting device and a second light-emitting device. The first light-emitting device has a main lens on its light-emitting side, and the second light-emitting device has an auxiliary lens on its light-emitting side. The main lens and the auxiliary lens have different optical path control principles. The auxiliary lens compensates for the brightness distribution of the emitted light from the light source module, thereby constructing a differentiated and targeted light field control mechanism at the optical architecture level of the light source module. This solution enables the light source module to surpass the homogenization modulation capability of a single type of lens. By using the auxiliary lens to directionally supplement or redistribute light energy in specific areas of insufficient brightness in the light field, it effectively improves the overall uniformity of emitted light, enhances local brightness, or optimizes light energy utilization without significantly increasing power consumption or complexity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a conventional large OD backlight module; Figure 2 This is a schematic diagram of the standard nine-point test; Figure 3 This is a schematic diagram of the structure of a conventional small OD backlight module; Figure 4 This is a schematic diagram of the structure of the light source module involved in the embodiments of this application. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the light source module involved in the embodiments of this application. Figure 2 ; Figure 6 This is a schematic diagram of light propagation using a refractive lens according to an embodiment of this application; Figure 7 This is a schematic diagram of light propagation using a reflective lens according to an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the light source module involved in the embodiments of this application. Figure 3 ; Figure 9 This is a schematic diagram of the structure of the light source module involved in the embodiments of this application. Figure 4 ; Figure 10 This is a schematic diagram of the structure of the light source module involved in the embodiments of this application. Figure 5 ; Figure 11 This is a schematic diagram of the structure of the light source module involved in the embodiments of this application. Figure 6 ; Figure 12 This is a schematic diagram of the electrical connections of the light source module involved in the embodiments of this application; Figure 13 This is a schematic diagram of the backlight module involved in the embodiments of this application; Figure 14 This is a schematic diagram of a display device involved in an embodiment of this application.

[0018] Explanation of reference numerals in the attached figures 1. LED light source; 10. Refractive lens; 20. Reflective lens; 100. Light source module; 101. First light-emitting device; 102. Second light-emitting device; 103. Main lens; 104. Auxiliary lens; 105. Printed circuit board; 106. Constant current driver board; 200. Backlight module; 210. Backplate; 107, 220, reflective film; 230, diffuser plate; 240, optical functional film; 300. Display panel; 400. Display device.

[0019] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0021] The following detailed description, with appropriate reference to the accompanying drawings, specifically discloses embodiments of the light source module, backlight module, and display device of this application. However, unnecessary detailed descriptions may be omitted. For example, detailed descriptions of well-known matters and repetitive descriptions of essentially the same structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this application and are not intended to limit the subject matter of the claims.

[0022] The "range" disclosed in this application is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60~120 and 80~110 are listed for a specific parameter, it is also expected that ranges of 60~110 and 80~120 are also included. Furthermore, if minimum range values ​​of 1 and 2 are listed, and if maximum range values ​​of 3, 4, and 5 are listed, then the following ranges are all expected: 1~3, 1~4, 1~5, 2~3, 2~4, and 2~5. In this application, unless otherwise stated, the numerical range "a~b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0~5" indicates that all real numbers between "0~5" have been listed in this article; "0~5" is simply a shortened representation of these numerical combinations. Furthermore, when a parameter is stated as an integer ≥2, it is equivalent to disclosing that the parameter is, for example, an integer such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0023] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0024] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, preferably sequentially. For example, if the method includes steps (a) and (b), it means that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, if the method may also include step (c), it means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the technical solution of this application is further described below in conjunction with the accompanying drawings and embodiments. However, this application is not limited to the listed embodiments, but should also include any other well-known modifications within the scope of the claims made in this application.

[0026] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0027] In related technologies, liquid crystal display devices themselves do not possess light-emitting capabilities and rely on backlight modules to provide a uniform, high-brightness surface light source for image display. Currently, backlight modules commonly use light-emitting diodes (LEDs) as the mainstream light source device. LEDs have advantages such as small size, long lifespan, and high energy efficiency, but their light emission characteristics are highly directional and concentrated: the macroscopic light emission angle is approximately 120°, while the main light energy is concentrated within a range of ±30° (i.e., 60°) on the front side. Therefore, in practical applications, it is necessary to use components such as optical lenses, light guide plates, and diffusion films to expand and homogenize the light emitted by the LEDs to meet the stringent requirements of brightness uniformity for the panel. Based on the structural thickness of the backlight module (i.e., optical distance, OD), it can be divided into two categories: large OD (e.g., OD ≥ 28 mm) and small OD (e.g., OD < 28 mm). Figure 1 In large-OD backlight modules, due to ample light mixing space, light can achieve good brightness uniformity after sufficient scattering. To pursue higher system brightness, a refractive lens 10 is typically used to amplify the light from the LED light source 1. However, due to product structure and cost limitations, the actual distribution area of ​​the LED light source 1 is often much smaller than the effective display area of ​​the LCD panel, resulting in the screen's four corners (such as the corners of the screen) being far from the LED light source 1. Figure 2 In the standard nine-point test, points P2, P4, P7, and P9 showed significantly insufficient received light flux, resulting in a "dim corner" phenomenon. This not only affects the subjective visual experience but also directly reduces the overall brightness uniformity index and negatively impacts the energy efficiency rating. In contrast, the reference... Figure 3Due to the pursuit of a thin and light-gloss design, small-OD backlight modules have extremely limited light mixing distances, making it difficult to achieve uniform illumination through natural diffusion. Therefore, a reflective lens 20 is typically placed on the LED light source 1 to enhance the lateral propagation of light and improve edge illumination. However, this solution still suffers from low overall brightness, often requiring compensation by increasing the density of the LED light source 1 and using high-gain optical films. While these measures can improve uniformity to some extent, they significantly increase material costs, power consumption, and thermal management complexity, hindering the development of cost-effective products. Furthermore, new backlight technologies, such as MiniLED, achieve excellent characteristics like high brightness and high dynamic range through high-density LED arrangement, but typically rely on high-configuration optical films and complex driving systems, resulting in high overall costs and limiting their wider market application.

[0028] In this embodiment, a light source module is provided, including a first light-emitting device and a second light-emitting device. The first light-emitting device has a main lens on its light-emitting side, and the second light-emitting device has an auxiliary lens on its light-emitting side. The main lens and the auxiliary lens operate on different optical path control principles. The auxiliary lens compensates for the brightness distribution of the emitted light from the light source module, thereby constructing a differentiated and targeted light field control mechanism at the optical architecture level of the light source module. This solution enables the light source module to surpass the homogenization modulation capability of a single type of lens. By utilizing the auxiliary lens, it can directionally supplement or redistribute light energy in specific areas of insufficient brightness in the light field. Ultimately, without significantly increasing power consumption or complexity, it effectively improves the overall uniformity of emitted light, enhances local brightness, or optimizes light energy utilization.

[0029] Based on this, the first aspect of the present application provides a light source module 100, which includes: a first light-emitting device 101 and a second light-emitting device 102; The first light-emitting device 101 is provided with a main lens 103 on the light-emitting side, and the second light-emitting device 102 is provided with an auxiliary lens 104 on the light-emitting side. The main lens 103 and the auxiliary lens 104 have different optical path control principles. The auxiliary lens 104 is used to compensate for the output brightness distribution of the light source module 100.

[0030] In one feasible embodiment, the light source module 100 is provided with at least one first light-emitting device 101 and at least one second light-emitting device 102. The light-emitting side of the first light-emitting device 101 is provided with a main lens 103 for providing basic illumination, and the light-emitting side of the second light-emitting device 102 is provided with an auxiliary lens 104 for compensating the light output brightness distribution of the light source module 100. The optical path control principles of the main lens 103 and the auxiliary lens 104 are different, which can build a differentiated and targeted light field control mechanism at the optical architecture level of the light source module 100. Ultimately, without significantly increasing power consumption or complexity, it can effectively improve the overall light output uniformity, enhance local brightness, or optimize light energy utilization.

[0031] Optionally, the main lens 103 and the auxiliary lens 104 are respectively selected from a refractive lens based on the principle of light refraction and a reflective lens based on the principle of light reflection.

[0032] Optionally, the main lens 103 is a refractive lens and the auxiliary lens 104 is a reflective lens, or the main lens 103 is a reflective lens and the auxiliary lens 104 is a refractive lens.

[0033] Optionally, the first light-emitting device 101 and the second light-emitting device 102 are both located in the receiving hole of their corresponding lens light-incident surface.

[0034] In one feasible embodiment, the first light-emitting device 101 includes at least one of LED and miniLED; the second light-emitting device 102 includes at least one of LED and miniLED. LEDs are typically between 200 and 1000 μm in size, providing sufficient brightness for general displays or lighting, but their brightness density and contrast control capabilities per unit area are limited. MiniLEDs are typically between 50 and 200 μm in size, allowing for the arrangement of thousands or even tens of thousands of Mini LEDs within the same area. Combined with numerous independent light-control zones, precise local dimming can be achieved, significantly improving contrast and black level performance.

[0035] In one feasible embodiment, when the optical mixing distance of the light source module 100 is greater than or equal to a preset distance threshold, the second light-emitting device 102 is disposed on the periphery of the first light-emitting area.

[0036] In one feasible embodiment, the distance threshold represents the critical point of the optical principle, corresponding to the critical range where the relationship between the optical mixing distance (OD) and the uniformity of the light field undergoes a qualitative change when the light source module 100 is applied in the backlight module. When the optical mixing distance of the light source module 100 is greater than or equal to the preset distance threshold, the path of light from the light source module 100 to the corner of the display surface is too long, and its light attenuation will exceed the uniformity standard allowed by the system, resulting in a dark corner defect that is visible to the naked eye. Therefore, the second light-emitting device 102, which is equipped with an auxiliary lens 104, can be directly arranged around the first light-emitting device 101 (i.e., at the corresponding corner position), realizing precise targeted delivery of light energy. The auxiliary lens 104 can be specifically optimized for light collection or redistribution efficiency in this area according to its optical path principle, thereby directly and effectively compensating for the light loss caused by the long optical path.

[0037] Optionally, the second light-emitting device 102 is disposed in at least one corner region of the light source module 100.

[0038] Optionally, the second light-emitting device 102 is disposed in the four corner areas of the light source module 100.

[0039] Optionally, the distance threshold can be 27mm, 27.5mm, 28mm, 28.5mm, 29mm, etc., and can be set according to the actual situation. This application embodiment does not limit this.

[0040] Optionally, if the optical mixing distance of the light source module 100 is greater than or equal to a preset distance threshold, it indicates that the light source module 100 is applied to a large OD backlight module.

[0041] In one feasible embodiment, when the optical mixing distance of the light source module 100 is greater than or equal to a preset distance threshold, the main lens 103 is a refractive lens and the auxiliary lens 104 is a reflective lens.

[0042] In one feasible embodiment, when the optical mixing distance of the light source module 100 is greater than or equal to a preset distance threshold, it indicates that the light source module 100 is applied to a large OD backlight module. In this type of structure, the path of light propagating from the light source module 100 to the corners of the display surface is significantly longer than the path to the center area, resulting in severe attenuation of light energy during transmission and forming an inherent optical defect of "bright center and dark corners". To address this, the brightness distribution of the emitted light from the light source module 100 can be compensated by using a refractive lens for the main lens 103 and a reflective lens for the auxiliary lens 104.

[0043] Optionally, the number of first light-emitting devices 101 is greater than or equal to the number of second light-emitting devices 102.

[0044] Optionally, refer to Figure 4 and5 In the light source module 100, both the first light-emitting device 101 and the second light-emitting device 102 are mounted on a printed circuit board 105 (PCB). When the optical mixing distance of the light source module 100 is greater than or equal to a preset distance threshold, the second light-emitting device 102 is positioned around the periphery of the first light-emitting area. The main lens 103 is a refractive lens, and the auxiliary lens 104 is a reflective lens. The number of first light-emitting devices 101 is greater than the number of second light-emitting devices 102. Both the first light-emitting device 101 and the second light-emitting device 102 are LEDs. In the light source module 100, the main lens 103 is a refractive lens, and its light propagation effect is referenced... Figure 6 As can be seen, the refractive lens has strong frontal light energy and a relatively small emission angle (e.g., 150°), thus it can efficiently converge and concentrate the light energy of the first light-emitting device 101 onto the main area of ​​the display surface, ensuring high-brightness basic illumination in the center and most areas. However, because the optical mixing distance of the light source module 100 is greater than or equal to a preset distance threshold, the path of light propagating from the light source module 100 to the corners of the display surface is significantly longer than the path to the center area, resulting in severe attenuation of light energy during transmission and forming an inherent optical defect of "bright center, dark corners". To address this, in this embodiment, a second light-emitting device 102 is provided around the first light-emitting device 101, and an auxiliary lens 104 of a reflective lens is provided on the light-emitting side of the second light-emitting device 102 for corner compensation. The light propagation effect of the reflective lens is as follows: Figure 7 It is evident that it has the characteristic of an ultra-wide light output angle, which can be used to compensate for the lack of edge and corner coverage of the main lens 103, and to spread light energy to the darkest corners that are most difficult to reach.

[0045] In this embodiment, when the optical mixing distance of the light source module 100 is greater than or equal to a preset distance threshold, reflective lenses are mixed and attached to the periphery of the light source module 100, i.e., the four corner areas, to intervene in dark areas that have a substantial impact on brightness. In this way, the main lens 103 can ensure that the center brightness is not lost, while the reflective auxiliary lenses 104 strongly supplement the brightness at the edges and corners, thereby significantly improving the overall brightness uniformity and directly improving the image quality.

[0046] In one feasible embodiment, when the optical mixing distance of the light source module 100 is less than a preset distance threshold, the first light-emitting device 101 is arranged around the second light-emitting device 102. When the optical mixing distance of the light source module 100 is less than the preset distance threshold, the short mixing distance makes it difficult to concentrate the central light, resulting in weak brightness in the central area of ​​the light source module 100. However, in this embodiment, the second light-emitting device 102, equipped with an auxiliary lens 104, is positioned in the central area. Utilizing its strong frontal light energy and good directionality, the light energy is highly concentrated and directionally enhanced to the central display area in front. This design significantly reduces the number of high-cost optical components used while ensuring sufficient brightness. Furthermore, because the central brightness is directly enhanced by the lens, it may reduce reliance on certain expensive brightness enhancement films, thereby achieving significant cost optimization at the system level.

[0047] Optionally, if the optical mixing distance of the light source module 100 is less than a preset distance threshold, the second light-emitting device 102 is disposed in the central region of the light source module 100.

[0048] Optionally, the distance threshold can be 27mm, 27.5mm, 28mm, 28.5mm, 29mm, etc., and can be set according to the actual situation. This application embodiment does not limit this.

[0049] Optionally, if the optical mixing distance of the light source module 100 is less than a preset distance threshold, it indicates that the light source module 100 is applied to a small OD backlight module.

[0050] In one feasible embodiment, when the optical mixing distance of the light source module 100 is less than a preset distance threshold, the main lens 103 is a reflective lens and the auxiliary lens 104 is a refractive lens.

[0051] Optionally, when the optical mixing distance of the light source module 100 is less than a preset distance threshold, the first light-emitting device 101 is arranged around the second light-emitting device 102, the main lens 103 is a reflective lens, and the auxiliary lens 104 is a refractive lens.

[0052] Optionally, the number of first light-emitting devices 101 is greater than or equal to the number of second light-emitting devices 102.

[0053] Optionally, if the optical mixing distance of the light source module 100 is less than a preset distance threshold, the light spot of the refractive lens (i.e., auxiliary lens 104) is contained within the reflective lens (i.e., main lens 103).

[0054] Optionally, refer to Figure 8 and 9In the light source module 100, both the first light-emitting device 101 and the second light-emitting device 102 are disposed on the printed circuit board 105 (PCB). When the optical mixing distance of the light source module 100 is less than a preset distance threshold, the first light-emitting device 101 is arranged around the second light-emitting device 102. The main lens 103 is a reflective lens, and the auxiliary lens 104 is a refractive lens. The number of first light-emitting devices 101 is greater than the number of second light-emitting devices 102. Neither the first light-emitting device 101 nor the second light-emitting device 102 is an LED. In small OD backlight modules, because the mixing space is extremely compressed, the light emitted from the light source lacks sufficient distance for diffusion and mixing, resulting in insufficient light energy convergence in the central area and difficulty in improving the overall brightness. To address this, this embodiment uses a combination of a reflective main lens 103 and a central refractive auxiliary lens 104. (Refer to...) Figure 6 As can be seen, refractive lenses have the technical characteristics of strong frontal light energy and relatively concentrated light emission angle. Therefore, placing them in the central area can concentrate and collimate most of the light energy and project it forward (to the center of the display surface), thereby providing targeted enhancement to the central brightness. Meanwhile, the reflective main lens 103 utilizes its large light emission angle to provide basic and uniform background light, achieving good light field mixing and meeting the uniformity requirements of most display areas.

[0055] In one feasible embodiment, the first light-emitting device 101 and the second light-emitting device 102 are arranged in rows and / or columns in the light source module 100.

[0056] Optionally, refer to Figure 10 When the first light-emitting device 101 and the second light-emitting device 102 are miniLEDs, the first light-emitting device 101 and the second light-emitting device 102 are arranged in alternating rows within the light source module 100. The main lens 103 is a reflective lens, and the auxiliary lens 104 is a refractive lens. Alternating rows means that the first light-emitting device 101 and the second light-emitting device 102 are arranged alternately in rows. For example, one row contains the first light-emitting device 101, the next row contains the second light-emitting device 102, and so on. Alternating rows allow for independent control of the light-emitting components in different rows according to the needs of the image content, thereby achieving more precise local dimming and improving contrast and dynamic range.

[0057] Optionally, refer to Figure 11 When the first light-emitting device 101 and the second light-emitting device 102 are miniLEDs, the first light-emitting device 101 and the second light-emitting device 102 are arranged in columns with alternating intervals in the light source module 100. The main lens 103 is a reflective lens, and the auxiliary lens 104 is a refractive lens. The column-alternating arrangement is similar to the row-alternating arrangement, but the direction is vertical. That is, the first light-emitting device 101 and the second light-emitting device 102 are arranged alternately in columns to form a vertically spaced pattern.

[0058] Optionally, refer to Figure 12 The printed circuit board 105 of the light source module 100 is equipped with several arrays of light-emitting devices. Their arrangement supports flexible zoning strategies of "one lamp per zone" or "multiple lamps per zone," meaning each independent dimming zone can be composed of a single light-emitting device, including a first light-emitting device 101 and a second light-emitting device 102. Each light-emitting device can be a miniLED or composed of multiple light-emitting devices to balance light control precision and cost efficiency. The printed circuit board 105 is connected to the constant current driver board 106 below via parallel or series-parallel connections, which provides a stable current. Parallel circuits connect the zones, allowing each zone to be driven and controlled independently, thereby achieving the local dimming function required for high dynamic range (HDR) and effectively improving contrast and image depth. The first light-emitting device 101, equipped with a main lens 103, and the second light-emitting device 102, equipped with an auxiliary lens 104, are arranged in an alternating array on the printed circuit board 105, allowing for differentiated configuration according to the optical requirements of each zone. This hybrid lens array design not only optimizes light uniformity and luminous efficiency, but also dynamically matches the optimal illumination distribution according to different display content, further improving the optical performance and energy efficiency of the backlight system.

[0059] In one feasible embodiment, the light source module 100 further includes a first driving circuit and a second driving circuit. The first driving circuit is electrically connected to the first light-emitting device 101, and the second driving circuit is electrically connected to the second light-emitting device 102. Through independent driving circuits, the first light-emitting device 101 and the second light-emitting device 102 can be illuminated on demand and dynamically adjusted.

[0060] In this embodiment, miniLEDs possess high density and independently controllable characteristics. Therefore, by arranging the first light-emitting device 101 and the second light-emitting device 102 in a staggered row / column configuration, a dual-channel fine-tuning grid is essentially constructed across the entire backlight panel. This layout allows the driving system to independently and flexibly activate the main illumination channel or the auxiliary compensation channel, or even both simultaneously, based on the real-time image content, in extremely small partitions. When displaying most regular or dark scenes, the system can drive only the first light-emitting device 101 corresponding to the reflective main lens 103. Since the reflective lens has a large light-emitting angle, uniform light distribution, and typically corresponds to a more cost-effective / power-efficient driving mode, it can meet the requirements for uniform backlighting with lower energy consumption. When the image requires localized instantaneous high brightness (such as explosion or flash effects), the system can quickly activate the second light-emitting device 102 corresponding to the refractive auxiliary lens 104 at the corresponding position. Because the refractive lens has strong frontal light energy, it can concentrate light energy to a specific area with higher efficiency in a short time. This avoids the huge energy consumption caused by the full-area high brightness of traditional backlights or ordinary MiniLED backlights when displaying content, achieving a leapfrog improvement in energy efficiency.

[0061] A second aspect of this application provides a backlight module, which includes the light source module described above.

[0062] Optionally, refer to Figure 13 The backlight module 200 includes: The back plate 210 is the basic support structure of the entire backlight module 200. It can be bent in an F-shape to form an accommodating space for installing other components in the backlight module 200. The back plate 210 can provide mechanical support and protect the internal components in the backlight module 200. The light source module 100 described in the above embodiment is disposed at the bottom of the accommodating space formed by the back plate 210, providing the necessary light source for the backlight module 200; The reflective film 220, located inside the back panel 210, is used to reflect light from inside the backlight module 200 back, thereby improving light utilization efficiency. The diffuser plate 230 is located on the light-emitting side of the light source module 100. Its function is to homogenize the light, making the light softer and more uniform, and reducing light spots and shadows. Optical functional film 240 is located on the light-emitting side of the diffuser plate; the optical functional film may include: brightness enhancement film, prism sheet, etc., to enhance the brightness of light and improve the display effect.

[0063] The beneficial effects of the backlight module provided in this application embodiment are the same as those of the light source module provided in the above embodiments, and other technical features in the backlight module are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0064] A third aspect of this application provides a display device, which includes a light source module as described above, or a backlight module as described above.

[0065] Optionally, refer to Figure 14 The display device 400 includes: a backlight module 200 and a display panel 300; The backlight module includes: a back plate 210, which is the basic support structure of the entire backlight module 200. It can be bent in an F-shape to form an accommodating space for installing other components within the backlight module 200. The back plate 210 provides mechanical support and protects the internal components of the backlight module 200. The light source module 100 described in the above embodiment is located at the bottom of the accommodating space formed by the back plate 210, providing the necessary light source for the backlight module 200. A reflective film 220, located inside the back plate 210, reflects light from inside the backlight module 200 back, improving light utilization efficiency. A diffuser plate 230, located on the light-emitting side of the light source module 100, homogenizes the light, making it softer and more uniform, reducing light spots and shadows. An optical functional film 240, located on the light-emitting side of the diffuser plate, may include: a brightness enhancement film, a prism sheet, etc., used to enhance light brightness and improve display effects. The display panel 300 is located on the light-emitting side of the optical functional film 240 in the backlight module 200. It is the final display part of the display device and is used to display images and text.

[0066] The beneficial effects of the display device provided in this application embodiment are the same as those of the light source module provided in the above embodiment, and other technical features in the display device are the same as those disclosed in the method of the above embodiment, and will not be repeated here.

[0067] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the patent protection scope of this application.

Claims

1. A light source module, characterized in that, The light source module includes: a first light-emitting device and a second light-emitting device; The first light-emitting device is provided with a main lens on its light-emitting side, and the second light-emitting device is provided with an auxiliary lens on its light-emitting side. The main lens and the auxiliary lens have different optical path control principles. The auxiliary lens is used to compensate for the output brightness distribution of the light source module.

2. The light source module as described in claim 1, characterized in that, When the optical mixing distance of the light source module is greater than or equal to a preset distance threshold, the second light-emitting device is disposed on the periphery of the first light-emitting area.

3. The light source module as described in claim 1, characterized in that, When the optical mixing distance of the light source module is greater than or equal to a preset distance threshold, the main lens is a refractive lens and the auxiliary lens is a reflective lens.

4. The light source module as described in claim 1, characterized in that, When the optical mixing distance of the light source module is less than a preset distance threshold, the first light-emitting device is arranged around the second light-emitting device.

5. The light source module as described in claim 1, characterized in that, When the optical mixing distance of the light source module is less than a preset distance threshold, the main lens is a reflective lens and the auxiliary lens is a refractive lens.

6. The light source module as described in claim 1, characterized in that, The first light-emitting device and the second light-emitting device are arranged in rows and / or columns in the light source module.

7. The light source module as described in any one of claims 1 to 6, characterized in that, The first light-emitting device includes at least one of LED and miniLED; The second light-emitting device includes at least one of LED and miniLED.

8. The light source module as described in any one of claims 1 to 6, characterized in that, The light source module further includes: a first driving circuit and a second driving circuit, wherein the first driving circuit is electrically connected to the first light-emitting device and the second driving circuit is electrically connected to the second light-emitting device.

9. A backlight module, characterized in that, The backlight module includes a light source module as described in any one of claims 1 to 8.

10. A display device, characterized in that, The display device includes a light source module as described in any one of claims 1 to 8, or a backlight module as described in claim 9.

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