Display module and display device

Abstract

The embodiment of the utility model provides a display module and a display device. The display module comprises a backlight module, a dimming box and a display panel. The backlight module comprises a red light-emitting unit and a green light-emitting unit, the dimming box at least comprises a first liquid crystal layer, the first liquid crystal layer comprises first liquid crystal molecules with a first pretilt angle, the display panel at least comprises a second liquid crystal layer, and the second liquid crystal layer comprises second liquid crystal molecules with a second pretilt angle. The backlight source in the backlight module is changed, and the dimming box and the corresponding liquid crystal layer in the display panel are combined, so that the display effect and the peep-proof performance of the display panel are ensured, meanwhile, the problem that the display panel is easily bluish during observation at a side view angle is avoided, and the comprehensive performance of the device is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing display panels and devices, and in particular to a display module and a display device. Background Art

[0002] With the continuous development and improvement of display technology, people have put forward higher requirements on the display quality and effects of display panels to enhance the user experience.

[0003] In addition to the normal luminous display, the display panel also needs to meet people's different usage needs. For example, when people use it in public places, the panel is usually required to have a certain privacy protection function to avoid the leakage of important information. Among them, when preparing a display device with anti-peeping performance, its anti-peeping principle is usually to change the light emission angle of the light in the display panel, especially the emission angle of the emitted light in the horizontal direction, and to form different sizes of anti-peeping viewing angles by adjusting the light emission angle. When the user observes the display screen in an area outside the anti-peeping viewing angle, the display content on the screen cannot be observed, thereby achieving the purpose of anti-peeping. However, in the prior art, the structure of the prepared anti-peeping display panel is relatively complex, and when the emission angle of the horizontally emitted light is controlled, it presents a bluish display effect when observed from a side angle, and the control effect is poor, which leads to unsatisfactory anti-peeping effect and display effect, which is not conducive to further improving the comprehensive performance of the display panel.

[0004] In summary, the film structure of the existing anti-peeping display panel is relatively complex, and the anti-peeping and display effects are not ideal, which is not conducive to further improving the comprehensive performance of the panel. Utility Model Content

[0005] The embodiments of the utility model provide a display module and a display device, so as to effectively improve the problem in the prior art that the anti-peeping display panel has a blue lateral viewing angle and unsatisfactory display and anti-peeping effects during dynamic display and anti-peeping.

[0006] In order to solve the above technical problems, a first aspect of an embodiment of the utility model provides a display module, wherein the display module comprises:

[0007] A backlight module, comprising at least a backlight source, wherein the backlight source comprises a red light emitting unit and a green light emitting unit;

[0008] A liquid crystal display panel is arranged on one side of the backlight module, and the liquid crystal display panel at least comprises an array substrate, a color filter substrate and a second liquid crystal layer located therebetween; and

[0009] At least one dimming box is disposed between the backlight module and the liquid crystal display panel, and the dimming box at least includes a first liquid crystal layer.

[0010] According to an embodiment of the present invention, the first liquid crystal layer includes first liquid crystal molecules having a first pre-tilt angle, and the second liquid crystal layer includes second liquid crystal molecules having a second pre-tilt angle;

[0011] The first pretilt angle is set to 0° to 10°, and the second pretilt angle is set to 0° to 10°

[0012] According to one embodiment of the utility model, the dimming box also includes a first polarizer arranged on a side of the first liquid crystal layer close to the backlight module, a first electrode arranged between the first polarizer and the first liquid crystal layer, and a second electrode arranged on a side of the first liquid crystal layer away from the backlight module.

[0013] According to an embodiment of the present invention, at least the first electrode or the second electrode is arranged in a pattern.

[0014] According to an embodiment of the present invention, the display panel further includes a second polarizer, and the second polarizer is disposed on a side of the second liquid crystal layer close to the backlight module.

[0015] According to an embodiment of the present invention, the liquid crystal display panel further includes a common electrode disposed between the array substrate and the second liquid crystal layer; and,

[0016] The third polarizer is arranged on a side of the color film substrate away from the backlight module.

[0017] According to an embodiment of the utility model, the liquid crystal display panel further includes a light conversion layer, and the light conversion layer is arranged on a side of the second polarizer away from the backlight module.

[0018] According to an embodiment of the present invention, the color resist layer includes a red color resist, a green color resist and a blue color resist which are arranged adjacent to each other in sequence;

[0019] Wherein, the blue color resist is configured as a blue light conversion layer.

[0020] According to an embodiment of the present invention, the blue light conversion layer includes any one of a rare earth fluoride film layer, a rare earth oxyhalide film layer, a rare earth oxide film layer and a composite oxide film layer.

[0021] According to a second aspect of an embodiment of the utility model, a display device is further provided, and the display device includes the display module provided in the embodiment of the utility model.

[0022] Beneficial effects of the embodiments of the utility model: Compared with the prior art, the embodiments of the utility model provide a display module and a display device. The display module includes a backlight module, a dimming box and a display panel. The backlight module includes a red light-emitting unit and a green light-emitting unit, and the dimming box includes at least a first liquid crystal layer, the first liquid crystal layer includes first liquid crystal molecules with a first pretilt angle, and the display panel includes at least a second liquid crystal layer, the second liquid crystal layer includes second liquid crystal molecules with a second pretilt angle. In the embodiments of the utility model, by changing the backlight source in the backlight module and combining the corresponding liquid crystal layers in the dimming box and the display panel, the display effect and anti-peeping performance of the display panel are ensured while avoiding the problem of bluish color when observed at a side angle, thereby effectively improving the comprehensive performance of the display module and the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of a film structure of a display module provided in an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the effect of light in a display device provided in an embodiment of the utility model;

[0026] Figure 3 It is a schematic diagram of the film layer structure of another display device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] In the following detailed description, only certain embodiments of the present invention are shown and described simply by way of illustration. As will be appreciated by those skilled in the art, the embodiments described herein may be modified in various ways without departing from the spirit or scope of the present invention.

[0028] In the drawings, the thickness of layers, films, panels, regions, etc. may be exaggerated for clarity and for better understanding and ease of description. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on another element," it can be directly on the other element or intervening elements may also be present.

[0029] In addition, unless explicitly described to the contrary, the word "comprise" and its variations like "include" or "contain" will be understood to imply the inclusion of the discussed elements, but not necessarily the exclusion of other elements. Further, in the specification, the word "on..." refers to placement above or below an object part, and does not necessarily mean placement on the upper side of an object part based on the direction of gravity.

[0030] It will be understood that although the terms "first", "second", etc. may be used herein to describe various components, these components should not be limited by these terms. These components are only used to distinguish one component from another component.

[0031] As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0032] It will also be understood that the terms “comprises” and / or “comprising” as used herein specify the presence of stated features or components, but do not exclude the presence or addition of one or more other features or components.

[0033] It will be understood that when a layer, region or component is referred to as being “formed on” another layer, region or component, it may be directly or indirectly formed on the other layer, region or component. For example, intervening layers, regions or components may be present.

[0034] In the following examples, the x-axis, y-axis, and z-axis are not limited to the three axes of the rectangular coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, or can represent different directions that are not perpendicular to each other.

[0035] The present invention provides a display module and a display device in an embodiment to effectively improve the problem that the display module is prone to appear blue when viewed from a side angle during anti-peeping and displaying, thereby resulting in unsatisfactory display effect and anti-peeping performance of the display panel.

[0036] like Figure 1 As shown, Figure 1 The schematic diagram of the membrane structure of a display module provided in an embodiment of the utility model. The display module includes a backlight module 101, a dimming box 102 and a display panel 103. The backlight module 101 is used to provide a backlight source to the display panel, the dimming box 102 is arranged on one side of the light emitting direction of the backlight module 101, and the display panel 103 is arranged on the side of the dimming box 102 away from the backlight module 101. When the backlight source in the backlight module 101 emits light, the light will sequentially pass through the dimming box 102 and the display panel 103, and finally be emitted to the outside.

[0037] Specifically, in the embodiment of the utility model, when the backlight module 101 is provided, the backlight module 101 further includes a plurality of backlight sources. When a plurality of backlight sources are provided, the plurality of backlight sources may be arranged in an array in the backlight module 101, such as being arranged in an array on rows and columns of the backlight area of ​​the backlight source, or forming an array structure of other shapes, so as to achieve different lighting effects, which will not be described in detail here.

[0038] In the embodiment of the utility model, the backlight source is configured as a light-emitting component without a blue light spectrum. Optionally, the backlight source may include a plurality of light-emitting units, the light-emitting units including a red light-emitting unit and a green light-emitting unit. In the following embodiments, the light-emitting unit is described by taking a light-emitting diode as an example.

[0039] The red light emitting unit can be set as a red light emitting diode, and the green light emitting unit can be set as a green light emitting diode. When setting, the red light emitting unit and the green light emitting unit can be packaged as a whole. Alternatively, the red light emitting unit can be packaged separately, the green light emitting unit can be packaged separately, and then the red light emitting unit and the green light emitting unit can be combined as required to achieve the purpose of color mixing.

[0040] Furthermore, the backlight source provided in the embodiment of the utility model can also use light-emitting diodes of other colors other than blue light, and arrange and combine them according to different practical needs. In this way, when multiple backlight sources are working and emitting light, there is no blue light component in the light emitted, so when the light continues to pass through other film structures, there is no blue light effect. This effectively reduces the impact of blue light inside the panel and avoids the problem of blue bias when observing from a side angle.

[0041] In the embodiment of the utility model, when the dimming box 102 is set, the dimming box 102 also includes at least a first liquid crystal layer 204 and a first polarizer 201. At the same time, the dimming box 102 also includes other functional film layers, and optionally, the dimming box 102 also includes a lower substrate 202, a first electrode 203, a second electrode 205 and an upper substrate 206.

[0042] Specifically, the first polarizer 201 is arranged on the light-emitting side of the backlight module 101, and the lower substrate 202 is arranged on the side of the first polarizer 201 away from the backlight module 101, the first electrode 203 is arranged on the side of the lower substrate 202 away from the first polarizer 201, the first liquid crystal layer 204 is arranged on the side of the first electrode 203 away from the lower substrate 202, and the second electrode 205 is arranged on the side of the first liquid crystal layer 204 away from the first electrode 203, and the upper substrate 206 is arranged on the side of the second electrode 205 away from the first liquid crystal layer 204. In this way, multiple different film layers are stacked in sequence according to the above order, and finally constitute the dimming box 102 provided in the embodiment of the utility model. When light passes through the dimming box 102, the light will propagate from the bottom to the top of the dimming box 102 in sequence.

[0043] In the embodiment of the utility model, when the first liquid crystal layer 104 is set, the first liquid crystal layer 104 further includes first liquid crystal molecules 207. When no voltage is applied to the first liquid crystal molecules 207, they have a first pretilt angle α1. In the embodiment of the utility model, the first pretilt angle α1 is set to 0-10°, and optionally, the first pretilt angle α1 is set to 0° or 5°.

[0044] When the display device works normally, a driving voltage is provided to the first electrode 203 and the second electrode 205. Under the action of the driving voltage, a voltage difference and a corresponding electric field are formed on the first electrode 203 and the second electrode 205. At this time, the first liquid crystal molecules 207 are deflected under the action of the electric field, and when light is irradiated onto the deflected first liquid crystal molecules 207, different degrees of refraction occur, thereby regulating the light and achieving different propagation effects.

[0045] In the embodiment of the utility model, in order to improve the control effect on the liquid crystal molecules in different regions, when the first electrode 203 and the second electrode 205 are set, the first electrode 203 and the second electrode 205 are patterned, such as setting the first electrode 203 as a plurality of electrode blocks of equal size, and correspondingly setting the second electrode 205 as a plurality of electrode blocks of equal size. And the electrode blocks of the first electrode 203 and the electrode blocks of the second electrode 205 are set correspondingly. Optionally, the driving voltage on the first electrode 203 and the second electrode 205 can be controlled according to different products, so as to ensure the control effect on the first liquid crystal molecules 207.

[0046] Furthermore, in the embodiment of the utility model, when the display panel 103 is provided, the display panel 103 at least includes a second liquid crystal layer 305. Correspondingly, the display panel 103 also includes other functional film layers, wherein the display panel 103 also includes a second polarizer 301, an array substrate 302, a common electrode 303, a substrate 304, a color filter substrate 306, and a third polarizer 307.

[0047] Specifically, when setting the above-mentioned film layer, the second polarizer 301 is set on the light-emitting side of the backlight module 101. Optionally, the second polarizer 301 is set on the side of the second liquid crystal layer 305 close to the backlight module, the array substrate 302 is set on the side of the second polarizer 301 away from the backlight module 101, the common electrode 303 is set on the side of the array substrate 302 away from the second polarizer 301, and the substrate 304 is set on the side of the common electrode 303 away from the array substrate 302.

[0048] Meanwhile, the second liquid crystal layer 305 is disposed on the side of the substrate 304 away from the array substrate 302. In the embodiment of the utility model, a pixel electrode 310 is also disposed on the substrate 304, and a color filter substrate 306 is also disposed on the side of the second liquid crystal layer 305 away from the substrate 304, and a third polarizer 307 is disposed on the side of the color filter substrate 306 away from the backlight module.

[0049] In the embodiment of the present invention, when the color filter substrate 306 is provided, the color filter substrate 306 may include a black matrix layer and a color resist layer 3061 provided between the black matrix layer 3062, wherein the color resist layer 3061 may include a red color resist, a blue color resist and a green color resist. Moreover, the red color resist, the blue color resist and the green color resist are provided adjacent to each other in sequence, and the black matrix layer 3062 is provided between two adjacent color resists of different colors.

[0050] In the embodiment of the utility model, according to the structure of the display module, the structure of the color-resistance layer 3061 can be adjusted to improve the anti-peeping performance of the device and effectively avoid the problem of bluish color when observed from a side angle.

[0051] Furthermore, a second liquid crystal molecule 309 is also provided in the second liquid crystal layer 305. When no voltage is applied, the second liquid crystal molecule 309 has a second pretilt angle α2. Optionally, the second pretilt angle α2 is set to 0° to 10°. At this time, the display panel is in a birefringence (ECB) mode, so that the light emitted by the backlight source will pass through the first liquid crystal layer 204 and the second liquid crystal layer 305 in turn, and finally emit to the outside world. In the embodiment of the utility model, according to the anti-peeping requirements of the panel, the second pretilt angle α2 can be set to 6° or 8°. Correspondingly, the first liquid crystal molecules in the first liquid crystal layer 204 in the dimming box 102 and the second liquid crystal molecules in the second liquid crystal layer 305 are close to the horizontal, so that the light obtained after the first liquid crystal molecule 207 is processed by the second liquid crystal molecule, It can ensure that more required light can be transmitted from the second liquid crystal molecule. In this way, it is ensured that the dimming box 102 has an anti-peeping effect on light regulation, and will not affect the display effect of the subsequent panel.

[0052] In the embodiment of the utility model, when the display module works normally, the backlight module 101 emits light, and the light does not contain light of the blue spectrum. The light will pass through the dimming box 102 and the display panel 103 in sequence, and will be acted upon by the first polarizer 201 and the first liquid crystal layer 204 in the dimming box 102 in sequence. After being acted upon by the first liquid crystal layer 204, the light will be acted upon by the second liquid crystal layer 305 again. After being acted upon by the liquid crystal molecules in different liquid crystal layers, the emission angle of the emitted light will change accordingly, and the required emission angle will be obtained, so as to realize the anti-peeping performance of the panel.

[0053] Furthermore, the light processed by the second liquid crystal layer 305 will be transmitted to the color filter substrate 306 again. Among them, the color filter substrate 306 is provided with color resistors of different colors, so that the light emitted by the backlight source will form a colorful display effect after passing through the color resistors of different colors. In the embodiment of the utility model, by changing the luminous characteristics of the backlight source in the backlight module, and combining the different light control effects of the dimming box and the display panel, the display and anti-peeping performance of the panel are achieved, and the blue display problem when observing the display screen from a side angle is effectively avoided.

[0054] See Figure 1In the film structure, in one embodiment of the utility model, in order to further improve the display effect of the display module and avoid the problem of bluish color at a side viewing angle, when the color resist layer 3061 in the display panel 103 is set, the color resist layer 3061 includes red color resist, green color resist and blue color resist which are sequentially arranged adjacent to each other. Among them, in the embodiment of the utility model, the material of the blue color resist is set as a blue light conversion layer, and specifically, the blue light conversion material includes any one of rare earth fluoride, rare earth oxyhalide, rare earth oxide and composite oxide. If the blue light conversion layer is set as a rare earth oxychloride, when light is irradiated on the blue light conversion layer, blue light can be stimulated, thereby achieving the color display effect of the panel.

[0055] Furthermore, when setting the corresponding red color resist and green color resist in the color resist layer 3061 , conventional resin materials can be used to obtain the red color resist and green color resist in the present invention.

[0056] When the backlight source in the backlight module emits light, since there is no blue light in the backlight source, the light emitted by the backlight source still has no blue light when passing through the dimming box 102 and the film layer of part of the display panel 103 in sequence. Once the light passes through the blue color resist in the color resist layer 3061, the blue light conversion layer excites blue light under the action of the light, thereby avoiding the problem of excess blue light in other film layers.

[0057] At the same time, in the embodiment of the utility model, since the first liquid crystal molecules 207 in the first liquid crystal layer 204 and the second liquid crystal molecules 309 in the second liquid crystal layer 205 have different pre-tilt angles, the liquid crystal molecules in different liquid crystal layers are set to different angles, thereby effectively ensuring the anti-peeping performance and effect of the panel on the one hand, and ensuring the normal display performance of the panel on the other hand. In this way, when the display module is switched to the anti-peeping mode, through the combined effect of the color resistance layer and the different liquid crystal layers, while ensuring the color display of the display panel, the blue display problem observed from the side viewing angle is effectively avoided.

[0058] like Figure 2 As shown, Figure 2 This is a schematic diagram of the effect of light in the display device provided in the embodiment of the utility model. Figure 1 In the film layer structure, when the display device in the embodiment of the utility model is in the wide viewing angle mode, the first liquid crystal molecules in the dimming box 102 are not driven. At this time, the dimming box 102 has no modulation effect on the light emitted by the backlight module, and the light emitted from the front view and the side view of the backlight module can reach the display panel, so that the display panel presents a display effect with a horizontal wide viewing angle.

[0059] When the display device in the embodiment of the utility model is in the anti-peeping mode with narrow viewing angle, a driving voltage is applied to the electrodes in the dimming box 102. Under the action of the driving voltage, the first liquid crystal molecules 207 are deflected and tend to be parallel to the electric field lines. At this time, the horizontal side viewing angle light of the backlight module is modulated, and basically no light can be irradiated on the color filter substrate in the display panel 103. The light is refracted by the first liquid crystal molecules 207 and forms scattered light with different exit angles, such as the corresponding scattered light 25 after scattering. The exit direction of the scattered light 25 is mostly the exit light in the vertical direction, and there is no exit light in the horizontal side viewing direction, so as to ensure that the exit light at the normal viewing angle is not affected and avoid the color shift problem at the horizontal side viewing angle.

[0060] The scattered light 25 continues to pass through the display panel 103 and is acted upon by the second liquid crystal layer 305 in the display panel. At this time, since the emission angle of the emitted light corresponding to the scattered light 25 is β1, which is the angle between the lateral emitted light and the vertical direction, after being processed by the first liquid crystal layer 204, the corresponding emission angle β1 is mainly the emitted light in the vertical direction, and it is approximately considered that there is no emitted light in the horizontal side. Therefore, most of the light acted upon by the second liquid crystal layer 305 is the light in the vertical direction.

[0061] In this way, most of the scattered light 25 vertically entering the second liquid crystal layer 305 can directly pass through the second liquid crystal layer 305. After being processed by the second liquid crystal layer 305, an outgoing light with an outgoing angle β2 will be formed. At this time, when observing from one side of the display panel, there is basically no difference between the front view direction and the wide viewing angle, and since no light can pass through the red, green, and blue color resistance in the side viewing direction, the brightness of the picture is lower when observed in the side viewing direction compared to the front viewing direction, and there is basically no color shift problem. In this way, while achieving an effective anti-peeping effect, the problem of blue bias at the side viewing angle is avoided.

[0062] Therefore, in the embodiment of the present invention, by setting the backlight module and the corresponding first liquid crystal layer 204 and second liquid crystal layer 305, at the same time, in the embodiment of the present invention, the blue color resistance is set as a blue light conversion layer, through the joint action of the color resistance layer and different liquid crystal layers, while ensuring the color display of the display panel, the problem of blue display when observed from the side viewing angle is effectively avoided. The side viewing angle of the display device is effectively adjusted, and the problem of blue when observed from the side viewing angle is avoided, while ensuring the anti-peeping effect of the device, its display effect is improved.

[0063] like Figure 3 As shown, Figure 3 Schematic diagram of the film structure of another display device provided in an embodiment of the present utility model. Figure 1In the structure of the utility model, the film structure of the display panel 103 is further improved in the embodiment of the utility model. At this time, the display panel 103 includes a second polarizer 301, a light conversion layer 405, an array substrate 302, a common electrode 303, a substrate 304, a second liquid crystal layer 305, a color film substrate 306 and a third polarizer 307 stacked in sequence.

[0064] Specifically, during the configuration, the light conversion layer 405 is disposed on the side of the second polarizer 301 away from the backlight module 101, and the array substrate 302 is disposed on the side of the light conversion layer 405 away from the backlight module 101. In the embodiment of the utility model, the light conversion layer 405 is made of a luminescent material that can excite blue light. Figure 1 In the embodiment of the present invention, the light conversion layer 405 may include any one of rare earth fluoride, rare earth oxyhalide, rare earth oxide or composite oxide. Optionally, the light conversion layer 405 in the embodiment of the present invention is prepared from rare earth chloride, and the material of the light conversion layer 405 may be the same as the material of the blue light conversion layer corresponding to the blue color resist in the color resist layer.

[0065] In the embodiment of the present invention, when setting the film structure of the color filter substrate 306 in the display panel 103, the color filter substrate 306 includes a red color resistor, a green color resistor and a blue color resistor arranged adjacent to each other in sequence, and a black matrix layer 3062 arranged between two adjacent color resistors. Figure 1 In the structure of the utility model, the blue color resist, the red color resist and the green color resist are all arranged according to the organic resin materials commonly used in the prior art, which will not be described in detail here.

[0066] In the embodiment of the utility model, when the backlight source of a specific color emits light and propagates to the light-emitting side, after the light is modulated by the first liquid crystal layer 204, under a narrow viewing angle, the outgoing light in the horizontal side viewing direction is controlled by the first liquid crystal layer 204, and only the outgoing light in the front viewing direction reaches the light conversion layer 405, while under a wide viewing angle, the light in the front viewing and side viewing directions can pass through the dimming box 102 and reach the light conversion layer 405. When the red and green light in the backlight module is irradiated onto the light conversion layer 405, the light conversion layer 405 will excite the blue light, and mix with the transmitted red and green light to form white light, which continues to propagate and reaches the display panel again, and is controlled by a series of pixel points of the display panel to form patterns of various colors.

[0067] In this way, the non-blue light emitted by the backlight source is regulated by the liquid crystal molecules in different liquid crystal layers and combined with the light conversion layer in the embodiment of the utility model, thereby effectively ensuring the display effect of the display device and avoiding the blue display problem when the device is observed from a side angle in the anti-peep mode, thereby effectively improving the overall performance of the device.

[0068] Furthermore, in the embodiment of the utility model, the light conversion layer can be arranged between two different film layers according to the requirements of different products. The implementation method and principle are the same as those in the utility model and are within the protection scope of the utility model.

[0069] In an embodiment of the utility model, a display device is also provided, in which the display module provided in the embodiment of the utility model is arranged, and the display module and the display device corresponding to the display module can be any product or component with display, anti-peeping performance or other functions such as a mobile phone, a computer, an electronic paper, a display, a wearable device, etc., and the specific type is not specifically limited.

[0070] In summary, the display module and display device provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present invention. Although the present invention is disclosed as above in the preferred embodiments, the above preferred embodiments are not used to limit the present invention. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is based on the scope defined by the claims.

Claims

1. A display module, characterized in that: include: A backlight module, comprising at least a backlight source, wherein the backlight source comprises a red light emitting unit and a green light emitting unit; A liquid crystal display panel is arranged on one side of the backlight module, and the liquid crystal display panel at least comprises an array substrate, a color filter substrate and a second liquid crystal layer located therebetween; and At least one dimming box is disposed between the backlight module and the liquid crystal display panel, and the dimming box at least includes a first liquid crystal layer.

2. The display module according to claim 1, characterized in that: The first liquid crystal layer includes first liquid crystal molecules having a first pretilt angle, and the second liquid crystal layer includes second liquid crystal molecules having a second pretilt angle; The first pretilt angle is set to 0° to 10°, and the second pretilt angle is set to 0° to 10°.

3. The display module according to claim 1, characterized in that: The dimming box also includes a first polarizer disposed on a side of the first liquid crystal layer close to the backlight module, a first electrode disposed between the first polarizer and the first liquid crystal layer, and a second electrode disposed on a side of the first liquid crystal layer away from the backlight module.

4. The display module according to claim 3, characterized in that: At least the first electrode or the second electrode is arranged in a pattern.

5. The display module according to claim 1, characterized in that: The liquid crystal display panel further includes a second polarizer, and the second polarizer is arranged on a side of the second liquid crystal layer close to the backlight module.

6. The display module according to claim 1, characterized in that: The liquid crystal display panel further includes a common electrode disposed between the array substrate and the second liquid crystal layer; and The third polarizer is arranged on a side of the color film substrate away from the backlight module.

7. The display module according to claim 5, characterized in that: The liquid crystal display panel further includes a light conversion layer, and the light conversion layer is arranged on a side of the second polarizer away from the backlight module.

8. The display module according to claim 1, characterized in that: The color filter substrate includes a black matrix layer and a color resist layer arranged between the black matrix layers, wherein the color resist layer includes a red color resist, a green color resist and a blue color resist arranged adjacent to each other in sequence; Wherein, the blue color resist is configured as a blue light conversion layer.

9. The display module according to claim 8, characterized in that: The blue light conversion layer includes any one of a rare earth fluoride film layer, a rare earth oxyhalide film layer, a rare earth oxide film layer and a composite oxide film layer.

10. A display device, characterized in that: Comprising a display module as described in any one of claims 1-9.

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