Backlight module and display device

Abstract

The present application discloses a backlight module (100) and a display device. The backlight module (100) comprises a back plate (110), a light panel (120) provided on a bottom wall of the back plate (110), and a blue light chip (131) provided on the light panel (120). The backlight module (100) further comprises light-transmitting packaging covers (140), a light guide plate (150), quantum dots (160), and a driving member (170). A light-transmitting packaging cover (140) comprises at least two sub-side plates (141) which can be separated from one another or closed together, and fluorescent powder is provided on inner walls of the sub-side plates (141). The light guide plate (150) is provided on a side of the light panel (120) away from the bottom wall of the back plate (110), the light guide plate (150) is provided with a light scattering structure (151), and the light scattering structure (151) and the blue light chip (131) are oppositely arranged. The quantum dots (160) are provided in the light guide plate (150) and are located on the light scattering structure (151). The driving member (170) is provided on the light panel (120). The driving member (170) is used for driving at least two sub-side plates (141) of a light-transmitting packaging cover (140) to be separated from one another so as to make way for light emitted by the blue light chip (131), or the driving member (170) drives the at least two sub-side plates (141) of the light-transmitting packaging cover (140) to be closed together so as to cover the blue light chip (131), so that light emitted by the blue light chip (131) irradiates the fluorescent powder.

Description

Backlight units and display devices

[0001] This application claims priority to Chinese patent application No. 202311103511.1 filed on August 30, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a backlight module and a display device using the backlight module. Background Art

[0003] With the development of science and technology, the technology of display devices is becoming more and more mature, and the market's pursuit of panel color gamut and thickness is getting higher and higher. Traditional Mini LED (mini Light-Emitting Diode) display screens can achieve high color gamut, but because of the need to set up quantum dot film, the quantum dot film needs to have multiple layers of uniform light film, which will cause the entire backlight module to be thicker and more expensive. In addition, traditional display devices do not have the advantage of switchable high and low color gamuts. Technical issues

[0004] The main purpose of this application is to propose a backlight module, which aims to enable a display device to switch between high color gamut and low color gamut. Technical Solutions

[0005] To achieve the above-mentioned purpose, the backlight module proposed in the present application includes a back panel, a light panel arranged on the bottom wall of the back panel, and a blue light chip arranged on the light panel. The backlight module also includes a light-transmitting packaging cover, a light guide plate, quantum dots, and a driving component. The light-transmitting packaging cover includes at least two sub-side panels that can be separated or folded together, and the inner walls of the sub-side panels are provided with phosphors; the light guide plate is arranged on the side of the light panel away from the bottom wall of the back panel, and the light guide plate is provided with a light-scattering structure, and the light-scattering structure and the blue light chip are The sheets are arranged relative to each other; the quantum dots are arranged in the light guide plate and on the scattering structure; the driving component is arranged on the lamp board; wherein the driving component is used to drive at least two of the sub-side plates of the light-transmitting packaging cover to separate from each other to avoid the blue light chip and the light emitted by the blue light chip; or, the driving component drives at least two of the sub-side plates of the light-transmitting packaging cover to close together to cover the outside of the blue light chip, so that the light emitted by the blue light chip is irradiated onto the phosphor.

[0006] In one embodiment, a groove is provided on the lamp panel, the opening of the groove faces away from the bottom wall of the back panel, one end of the sub-side panel is slidably disposed in the groove, and the driving member is disposed in the groove.

[0007] In one embodiment, the light-transmitting packaging cover includes at least three sub-side panels, which together form a pyramid shape. The inclination direction of the groove sidewall is the same as the inclination direction of the sub-side panels it accommodates.

[0008] In one embodiment, the driving member is a coil, a power supply is provided on the lamp panel, and the driving member is electrically connected to the power supply; a magnetic member is provided on the bottom wall of the sub-side panel, and the magnetic member is arranged opposite to the coil.

[0009] In one embodiment, the backlight module further includes an elastic component connected between the bottom wall of the groove and the bottom of the sub-side plate.

[0010] In one embodiment, the elastic component comprises:

[0011] a spring, the two ends of which are respectively connected to the bottom wall of the groove and the bottom of the sub-side plate; and

[0012] The guide post is protruded from the bottom wall of the groove, and the spring is sleeved outside the guide post.

[0013] In one embodiment, two elastic components are provided at intervals, and the coil is connected between the two elastic components.

[0014] In one embodiment, the light scattering structure is a pit formed by concaving a side of the light guide plate facing the light board in a direction away from the light board, and the blue light chip is disposed in the pit.

[0015] In one embodiment, the backlight module further includes an optical film, and the optical film is disposed on a side of the light guide plate away from the light board.

[0016] The present application also proposes a display device, comprising a display panel and the above-mentioned backlight module, wherein the display panel is arranged on the light-emitting side of the backlight module. Beneficial effects

[0017] The technical solution of the present application is to provide a light-transmitting encapsulation cover, which includes at least two sub-side panels that can be separated or closed from each other, and the inner walls of the sub-side panels are provided with phosphors. When the sub-side panels of the light-transmitting encapsulation cover are closed and covered on the outside of the blue light chip, the light-transmitting encapsulation cover can protect the blue light chip on the one hand, and on the other hand, the blue light emitted by the blue light chip can be mixed with the phosphors on the inner walls of the sub-side panels of the light-transmitting encapsulation cover, thereby forming white light after mixing, thereby achieving the effect of low color gamut light emission. By arranging quantum dots in the light guide plate and on the light-scattering structure of the light guide plate, and the light-scattering structure is arranged opposite to the blue light chip, when the driving member drives the sub-side panels to separate from each other and avoid the light emitted by the blue light chip, the light emitted by the blue light chip can be scattered by the light-scattering structure and directly excite the quantum dots to emit light, so that the light emitted by the quantum dots and the blue light emitted by the blue light chip are mixed to form high-purity light, thereby improving the color gamut and achieving the effect of high color gamut light emission. The technical solution of this application uses a driver to drive at least two sub-side panels of the light-transmitting encapsulation cover to separate or move closer together, thereby achieving the effect of switching the backlight module between a high-color gamut light emission mode and a low-color gamut light emission mode. Furthermore, the technical solution of this application only requires the use of a blue light chip to meet the requirements of high-color gamut and low-color gamut light emission, achieving the effect of using a single blue light chip in multiple modes, saving the number of light sources and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] FIG1 is a schematic cross-sectional view of a backlight module according to an embodiment of the present application;

[0020] FIG2 is a partial enlarged view of point A in FIG1 ;

[0021] FIG3 is a top view of the assembled light board and blue light chip in the backlight module of the first embodiment of the present application;

[0022] FIG4 is a cross-sectional view of a light board in a backlight module according to an embodiment of the present application;

[0023] 5 is a schematic diagram of the connection structure of a sub-side plate, a spring, and a coil of a light-transmitting packaging cover in a backlight module according to an embodiment of the present application;

[0024] FIG6 is a schematic structural diagram of a backlight module in accordance with an embodiment of the present application, wherein the light-transmitting packaging cover is closed and disposed outside the blue light chip;

[0025] 7 is a schematic structural diagram of the backlight module in the first embodiment of the present application, in which the sub-side panels of the light-transmitting packaging cover are separated from each other to avoid the blue light chip;

[0026] FIG8 is a schematic cross-sectional structural diagram of an embodiment of a display device according to the second embodiment of the present application.

[0027] Description of Figure Numbers:

[0028] Reference number name Reference number name 100 backlight module 110 back plate 120 light board 121 groove 130 blue light chip 140 light-transmitting packaging cover 141 sub-side plate 150 light guide plate 151 light diffusion structure 160 quantum dot 170 driving component 181 spring 182 guide column 190 optical film 200 display panel

[0029] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Modes for Carrying Out the Invention

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] Example 1:

[0034] This application proposes a backlight module 100 .

[0035] In the embodiment of the present application, please refer to Figures 1 to 4, and Figures 6 and 7. The backlight module 100 includes a back plate 110, a light board 120 provided on the bottom wall of the back plate 110, and a blue light chip 130 provided on the light board 120. The backlight module 100 also includes a light-transmitting packaging cover 140, a light guide plate 150, quantum dots 160, and a driving member 170. The light-transmitting packaging cover 140 includes at least two sub-side plates 141 that can be separated or closed from each other, and the inner wall of the sub-side plate 141 is provided with phosphor; the light guide plate 150 is provided on the side of the light board 120 away from the bottom wall of the back plate 110, and the light guide plate 150 is provided on the side of the light board 120 away from the bottom wall of the back plate 110. 50 is provided with a light-scattering structure 151, which is arranged opposite to the blue light chip 130; the quantum dots 160 are arranged in the light guide plate 150 and on the light-scattering structure 151; the driving member 170 is arranged on the lamp board 120; wherein, the driving member 170 is used to drive at least two sub-side plates 141 of the light-transmitting packaging cover 140 to separate from each other to avoid the light emitted by the blue light chip 130; or, the driving member 170 drives at least two sub-side plates 141 of the light-transmitting packaging cover 140 to close together to cover the outside of the blue light chip 130, so that the light emitted by the blue light chip 130 is irradiated onto the phosphor.

[0036] A blue light chip 130 is provided on the lamp board 120 of the backlight module 100, and the blue light chip 130 emits blue light. By providing a translucent packaging cover 140, the translucent packaging cover 140 can cover the blue light chip 130, thereby providing better protection for the blue light chip 130. In addition, by providing phosphor on the inner wall of the sub-side plate 141 of the translucent packaging cover 140, the blue light emitted by the blue light chip 130 can emit white light of a normal color range after mixing with the phosphor. By providing a scattering structure 151 on the light guide plate 150, and the scattering structure 151 is arranged opposite to the blue light chip 130, the white light emitted after the blue light and the phosphor are mixed can pass through the scattering structure 151 of the light guide plate 150, and the scattering structure 151 can scatter the light, thereby achieving a uniform light output effect. Specifically, the light scattering structure 151 may be a protrusion or groove 121 structure formed on a side of the light guide plate 150 facing the bottom wall of the back plate 110 .

[0037] In the technical solution of the present application, the light-transmitting packaging cover 140 includes at least two sub-side panels 141 that can be separated or closed, and a driving member 170 is further provided on the light board 120. The driving member 170 is used to drive the at least two sub-side panels 141 to separate or close from each other. When the driving member 170 drives the at least two sub-side panels 141 to separate from each other, the sub-side panels 141 provide an avoidance space for the propagation path of the light emitted by the blue light chip 130, that is, the blue light chip 130 can emit The blue light emitted does not pass through the transparent packaging cover 140, but is directly emitted to the light guide plate 150. After passing through the light-scattering structure 151 of the light guide plate 150, because the quantum dots 160 are arranged in the light guide plate 150 and located on the light-scattering structure 151, the blue light will excite the quantum dots 160 to emit red light and green light. Therefore, the blue light, red light, and green light are mixed into high-color gamut white light, which is then emitted through the light-emitting surface of the light guide plate 150, thereby achieving the effect of high-color gamut light emission of the backlight module 100. It should be noted that the quantum dots 160 include red quantum dots and green quantum dots. After blue light excites the red quantum dots, it emits red light, and after blue light excites the green quantum dots, it emits green light. Then, the blue light is mixed with the red light and the green light to form high-purity white light. When the driver 170 drives at least two sub-side panels 141 to close together, at least part of the light emitted by the blue light chip 130 will be directed toward the inner wall of the sub-side panel 141 covered on its exterior, and then mixed with the phosphor disposed on the inner wall of the sub-side panel 141 to form white light, which is then directed toward the light guide plate 150. It is understandable that the process by which the blue light chip 130 excites the red phosphor and the green phosphor to form white light is as follows: the blue light excites the red phosphor and the green phosphor to produce red light and green light, which are then combined with the penetrating blue light to form white light. The process by which the blue light chip 130 excites the red quantum dots and the green quantum dots to form white light is as follows: the blue light excites the red quantum dots and the green quantum dots to produce red light and green light, which are then combined with the penetrating blue light to form white light. The excitation process of the two is similar, but because the quantum dot material has a wide excitation spectrum and a narrow emission spectrum (the luminescence half-peak width is usually around 30nm), the red and green colors of the quantum dot backlight are purer than those of the phosphor backlight, and a higher color gamut can be achieved. Therefore, the color gamut of the white light formed by the mixture of blue light and phosphor is lower than the color gamut of the white light formed after it excites the quantum dots 160, so the backlight module 100 can also achieve the effect of low color gamut light emission. It should be noted that in the low color gamut mode, the light emitted by the blue light chip excites the phosphor to form white light. Since specific quantum dots can only be excited by light of a specific wavelength, for example, blue light can excite the quantum dot, while white light cannot excite the same quantum dot, the quantum dots have no effect in the low color gamut mode.

[0038] Specifically, the driver 170 can drive the sub-side panels 141 to slide or rotate, as long as at least two sub-side panels 141 can separate from each other and avoid the blue light emitted by the blue light chip 130 when the backlight module 100 switches from a low color gamut light emission mode to a high color gamut light emission mode. For example, when the driver 170 drives the sub-side panels 141 to slide, the light board 120 can have a first slide groove parallel to its surface and a second slide groove perpendicular to the first slide groove, with the second slide groove extending in the same direction as the thickness of the light board 120. Therefore, the driver 170 can first drive the sub-side panels 141 to slide in the first slide groove in a direction parallel to the surface of the light board 120, thereby moving the sub-side panels 141 away from the blue light chip 130, and then drive the sub-side panels 141 to be accommodated in the second slide groove in a direction perpendicular to the surface of the light board 120, thereby allowing the sub-side panels 141 to avoid the light from the blue light chip 130. When the driving member 170 drives the sub-side panel 141 to rotate, the driving member 170 can drive the sub-side panel 141 to rotate in a direction away from the blue light chip 130, so that when the sub-side panel 141 rotates to be parallel to the board surface of the light board 120, the sub-side panel 141 can avoid the light emitted by the blue light chip 130, thereby facilitating the blue light emitted by the blue light chip 130 to excite the quantum dots 160 to emit light, and then achieve a high color gamut light output effect.

[0039] The technical solution of the present application is to set up a light-transmitting packaging cover 140, which includes at least two sub-side panels 141 that can be separated or closed from each other, and the inner walls of the sub-side panels 141 are provided with fluorescent powder. When the sub-side panels 141 of the light-transmitting packaging cover 140 are closed and covered on the outside of the blue light chip 130, the light-transmitting packaging cover 140 can protect the blue light chip 130 on the one hand, and on the other hand, the blue light emitted by the blue light chip 130 can be mixed with the fluorescent powder on the inner walls of the sub-side panels 141 of the light-transmitting packaging cover 140, thereby forming white light after mixing, so as to achieve the effect of low color gamut light emission. By arranging the quantum dots 160 within the light guide plate 150 and on the light scattering structure 151 of the light guide plate 150, and by arranging the light scattering structure 151 relative to the blue light chip 130, when the driver 170 drives the sub-side plates 141 to separate from each other and avoid the light emitted by the blue light chip 130, the light emitted by the blue light chip 130 can be scattered by the light scattering structure 151 and directly stimulate the quantum dots 160 to emit light, so that the light emitted by the quantum dots 160 and the blue light emitted by the blue light chip 130 are mixed to form high-purity light, thereby improving the color gamut and achieving a high-color gamut light emission effect. The technical solution of the present application can achieve the effect of switching the backlight module 100 between a high-color gamut light emission mode and a low-color gamut light emission mode by driving the at least two sub-side plates 141 of the light-transmitting packaging cover 140 to separate from each other or move closer to each other through the driver 170. Moreover, the technical solution of the present application only requires the setting of a blue light chip 130 to meet the requirements of high color gamut light emission and low color gamut light emission, achieving the effect of using a blue light chip in more than 130 modes, saving the number of light sources and reducing costs.

[0040] Further, please refer to Figures 1 to 4, as well as Figures 6 and 7. A groove 121 is provided on the lamp board 120, and the opening of the groove 121 is facing away from the bottom wall of the back panel 110. One end of the sub-side panel 141 is slidably disposed in the groove 121, and the driving member 170 is disposed in the groove 121 and is drivingly connected to the sub-side panel 141.

[0041] By providing a groove 121 on the lamp board 120, the opening of the groove 121 is facing in the direction away from the bottom wall of the back panel 110, and one end of the sub-side panel 141 can be slidably provided in the groove 121, then under the driving action of the driving member 170, the sub-side panel 141 can be accommodated in the groove 121, thereby achieving the effect that the sub-side panels 141 of the light-transmitting packaging cover 140 can avoid the light of the blue light chip 130 under the requirement of high color gamut light output, so that the light emitted by the blue light chip 130 can directly excite the quantum dots 160 to emit light.

[0042] Specifically, the groove 121 can be aligned with the extension direction of the sub-side plate 141, thereby directly driving the sub-side plate 141 along its extension direction to be accommodated within the groove 121, thereby preventing interference between the sub-side plate 141 and the blue light chip 130 during movement. Alternatively, the width of the groove 121 can be greater than the thickness of the sub-side plate 141, thereby driving the sub-side plate 141 to first move away from the blue light chip 130 and then be accommodated within the groove 121 in a direction away from the light guide plate 150, thereby also preventing interference between the sub-side plate 141 and the blue light chip 130.

[0043] In one example, please refer to Figures 1 to 4, as well as Figures 6 and 7. The light-transmitting packaging cover 140 includes at least three sub-side panels 141, and the at least three sub-side panels 141 are together enclosed to form a pyramid shape. The inclination direction of the groove side wall of the groove 121 is the same as the inclination direction of the sub-side panel 141 it is used to accommodate.

[0044] Specifically, the light-transmitting encapsulation cover 140 has three sub-side panels 141, which together form a triangular pyramid. Alternatively, the light-transmitting encapsulation cover 140 has four sub-side panels 141, which together form a quadrangular pyramid. Alternatively, the light-transmitting encapsulation cover 140 has five sub-side panels 141, which together form a pentagonal pyramid.

[0045] By making the inclination direction of the groove side wall of the groove 121 the same as the inclination direction of the sub-side plate 141 it accommodates, the sub-side plate 141 can simultaneously be accommodated in the groove 121 and separated from other sub-side plates 141 and avoid the blue light chip 130 during the process of sliding along the groove side wall of the groove 121.

[0046] Of course, in other embodiments, the light-transmitting packaging cover 140 may also be conical, and may include two arc-shaped sub-side panels 141 .

[0047] In one embodiment, referring to Figures 3 to 7, the driving member 170 is a coil, a power supply is provided on the lamp board 120, and the driving member 170 is electrically connected to the power supply; a magnetic member is provided on the bottom wall of the sub-side plate 141, and the magnetic member is arranged opposite to the coil.

[0048] By setting the driving member 170 as a coil, and the coil being electrically connected to the power supply on the lamp board 120, the power supply can energize the coil, and a magnetic field is generated when the coil is energized. By providing a magnetic member on the bottom wall of the sub-side panel 141, and the magnetic member being arranged opposite to the coil, the magnetic member moves toward the direction of the coil under the action of the magnetic field generated after the coil is energized, and then the sub-side panel 141 can be driven to move toward the bottom wall of the groove 121 and be accommodated in the groove 121. By setting the driving member 170 as a coil, on the one hand, the sub-side panel 141 can be driven to move toward the groove 121 when the coil is energized, and on the other hand, the driving member 170 has a simple structure and can be powered by the power supply of the lamp board 120.

[0049] Furthermore, referring to FIG. 3 to FIG. 7 , the backlight module 100 further includes an elastic component connected between the bottom wall of the groove 121 and the bottom of the sub-side plate 141 .

[0050] By connecting an elastic component between the bottom wall of the groove 121 and the bottom of the sub-side plate 141, the elastic component can, on the one hand, act as a buffer, and on the other hand, support the sub-side plate 141 of the light-transmitting packaging cover 140 and provide a driving force for the sub-side plate 141 of the light-transmitting packaging cover 140 to return to its initial position. Specifically, when the coil is energized, the magnetic element at the bottom of the sub-side plate 141 is attracted by the magnetic field generated by the energized coil and moves toward the inside of the groove 121, compressing the elastic component and avoiding the risk of the sub-side plate 141 suddenly colliding with the bottom wall of the groove 121. Since the sub-side plate 141 is accommodated in the groove 121, it avoids the light emitted by the blue light chip 130, thereby enabling the backlight module 100 to switch to the high color gamut light emission mode; when the coil is de-energized, the sub-side plate 141 automatically moves in the direction of extending out of the groove 121 under the elastic force of the elastic component, thereby causing the sub-side plates 141 to close together to switch to the low color gamut light emission mode.

[0051] In one example, please refer to Figures 3 to 7, the elastic component includes a spring 181 and a guide column 182, and the two ends of the spring 181 are respectively connected to the bottom wall of the groove 121 and the bottom of the sub-side plate 141; the guide column 182 is protruded from the bottom wall of the groove 121, and the spring 181 is sleeved outside the guide column 182.

[0052] By connecting the two ends of spring 181 to the bottom wall of groove 121 and the bottom of sub-side plate 141, respectively, the elastic action of spring 181 provides a cushioning effect for the sub-side plate 141 to be accommodated in groove 121, and provides a driving force for the sub-side plate 141 to at least partially extend out of groove 121. By providing a guide post 182 protruding from the bottom wall of groove 121 and spring 181 being sleeved outside of guide post 182, spring 181 has a good guiding effect during compression and extension.

[0053] Furthermore, as shown in FIG5 , two elastic components are provided at intervals, and the coil is connected between the two elastic components.

[0054] Specifically, two elastic components can be provided at opposite ends of the bottom of the sub-side plate 141, thereby ensuring that the sub-side plate 141 has high stability when moving within the groove 121. In addition, by connecting the coil between the two elastic components, the two elastic components and the coil together form a triangle, ensuring a more stable structure.

[0055] 1 and 2 , the light diffusion structure 151 is a pit formed on the side of the light guide plate 150 facing the light board 120 , which is recessed away from the light board 120 , and the blue light chip 130 is disposed in the pit.

[0056] By setting the light-scattering structure 151 as a groove 121 that is recessed from the side of the light guide plate 150 toward the light board 120 in the direction away from the light board 120, and setting the blue light chip 130 in the recess, on the one hand, it can ensure that the blue light chip 130 is closer to the quantum dots 160, thereby improving the utilization rate of the quantum dots 160 and obtaining a higher-purity light output effect; on the other hand, it can also reduce the thickness of the backlight module 100, so that the backlight module 100 meets the user's demand for thin and light display devices.

[0057] Furthermore, as shown in FIG. 1 , the backlight module 100 further includes an optical film 190 . The optical film 190 is disposed on a side of the light guide plate 150 away from the light board 120 .

[0058] By providing an optical film 190 on the side of the light guide plate 150 facing away from the lamp board 120 , the quality of the light output can be further improved, ensuring that the light output has ideal brightness and uniformity.

[0059] Example 2:

[0060] This application also proposes a display device. Referring to FIG. 1 , FIG. 2 , and FIG. 8 , the display device includes a display panel 200 and a backlight module 100 . The specific structure of the backlight module 100 is similar to the above-described embodiments. Since this display device utilizes all of the technical solutions of all of the above-described embodiments, it at least has all of the beneficial effects brought about by the technical solutions of the above-described embodiments, which will not be described in detail here. The display panel 200 is disposed on the light-emitting side of the backlight module 100 .

[0061] By arranging the display panel 200 on the light-emitting side of the backlight module 100, the light emitted by the backlight module 100 can be directed toward the display panel 200, thereby facilitating image display on the display panel 200. Specifically, based on the aforementioned solution in which the backlight module 100 includes the optical film 190, the side of the optical film 190 facing away from the light guide plate 150 is the light-emitting side of the backlight module 100, and the display panel 200 can be arranged on the side of the optical film 190 facing away from the light guide plate 150.

[0062] The above descriptions are merely some embodiments of the present application and are not intended to limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the application concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A backlight module (100), comprising a back plate (110), a light plate (120) arranged on the bottom wall of the back plate (110), and a blue light chip (131) arranged on the light plate (120), wherein: The backlight module (100) further comprises: A light-transmitting packaging cover (140), the light-transmitting packaging cover (140) comprising at least two sub-side panels (141) that can be separated or folded together, the inner walls of the sub-side panels (141) being provided with fluorescent powder; a light guide plate (150), the light guide plate (150) being arranged on a side of the bottom wall of the light plate (120) away from the back plate (110), the light guide plate (150) being provided with a light scattering structure (151), the light scattering structure (151) being arranged opposite to the blue light chip (131); A quantum dot (160), the quantum dot (160) being arranged in the light guide plate (150) and located on the light scattering structure (151); and A driving member (170), the driving member (170) being arranged on the lamp board (120); The driving member (170) is used to drive at least two of the sub-side plates (141) of the light-transmitting packaging cover (140) to separate from each other so as to avoid light emitted by the blue light chip (131); or the driving member (170) drives at least two of the sub-side plates (141) of the light-transmitting packaging cover (140) to close together so as to cover the outside of the blue light chip (131) so as to allow light emitted by the blue light chip (131) to irradiate the phosphor.

2. The backlight module (100) according to claim 1, wherein: The quantum dots (160) include red quantum dots and green quantum dots. The red quantum dots emit red light after being excited by blue light, and the green quantum dots emit green light after being excited by blue light.

3. The backlight module (100) according to claim 1, wherein: The light board (120) has a first slide groove parallel to the board surface of the light board (120) and a second slide groove perpendicular to the first slide groove, and the extension direction of the second slide groove is consistent with the thickness direction of the light board (120).

4. The backlight module (100) according to claim 1, wherein: The lamp board (120) is provided with a groove (121), the opening of the groove (121) faces a direction away from the bottom wall of the back board (110), one end of the sub-side board (141) is slidably disposed in the groove (121), and the driving member (170) is disposed in the groove (121).

5. The backlight module (100) according to claim 4, wherein: The groove (121) and the sub-side plate (141) extend in the same direction.

6. The backlight module (100) according to claim 4, wherein: The width dimension of the groove (121) is greater than the thickness dimension of the sub-side plate (141).

7. The backlight module (100) according to claim 4, wherein: The light-transmitting packaging cover (140) comprises at least three sub-side plates (141), the at least three sub-side plates (141) together enclose a pyramid shape, and the inclination direction of the groove side wall of the groove (121) is the same as the inclination direction of the sub-side plates (141) for accommodating the groove (121).

8. The backlight module (100) according to claim 7, wherein: The driving member (170) is a coil, a power source is provided on the lamp board (120), and the driving member (170) is electrically connected to the power source; a magnetic attraction member is provided on the bottom wall of the sub-side plate (141), and the magnetic attraction member is arranged opposite to the coil.

9. The backlight module (100) according to claim 8, wherein: The backlight module (100) further comprises an elastic component, wherein the elastic component is connected between the bottom wall of the groove (121) and the bottom of the sub-side plate (141).

10. The backlight module (100) according to claim 9, wherein: The elastic component comprises: a spring (181), wherein two ends of the spring (181) are respectively connected to the bottom wall of the groove (121) and the bottom of the sub-side plate (141); and A guide post (182), wherein the guide post (182) is protruding from the bottom wall of the groove (121), and the spring (181) is sleeved outside the guide post (182).

11. The backlight module (100) according to claim 9, wherein: Two elastic components are arranged at intervals, and the coil is connected between the two elastic components.

12. The backlight module (100) according to claim 11, wherein: The two elastic components are respectively arranged at two opposite ends of the bottom of the sub-side plate (141).

13. The backlight module (100) according to any one of claims 1 to 12, wherein: The light scattering structure (151) is a pit formed by a depression on a side of the light guide plate (150) facing the light board (120) in a direction away from the light board (120), and the blue light chip (131) is arranged in the pit.

14. The backlight module (100) according to any one of claims 1 to 12, characterized in that: The backlight module (100) further comprises an optical film (190), wherein the optical film (190) is arranged on a side of the light guide plate (150) facing away from the light board (120).

15. A display device, wherein: The display device comprises a display panel (200) and a backlight module (100) according to any one of claims 1 to 14, wherein the display panel (200) is arranged on a light emitting side of the backlight module (100).

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