Display module and display device

Abstract

A display module (100) and a display device. In the display module (100), light transmitted from a first light modulation component (20) is first polarized light, light transmitted from dimming areas (02) corresponding to light-emitting areas (01) in an off state is second polarized light, and light transmitted from a second light modulation component (30) comprising dimming areas (02) corresponding to light-emitting areas (01) in a light-emitting state is third polarized light; and a first polarizer (41) is provided on the side of the second light modulation component (30) away from the first light modulation component (20).

Description

Display module and display device Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] The response time of liquid crystal molecules is fixed. The higher the refresh rate and resolution of the display module, the smaller the available duty cycle of the backlight.

[0003] Conventional technology uses a progressive backlight scanning method. Within a frame, the liquid crystals rotate sequentially. By the time the scan reaches the bottom of the display panel, the liquid crystal molecules in the upper portion have already completed their rotation. At this point, the backlight corresponding to the upper portion of the display panel turns on, while the backlight corresponding to the lower portion remains off. This reduces the smearing problem caused by delayed liquid crystal rotation.

[0004] However, backlight scanning solutions for mini and micro LED displays can present halo issues. For example, when mini and micro LED displays are used in virtual reality applications, the display panels are small, so halo diffusion occupies a large area of ​​the display panel. This makes the liquid crystal rotation process at the halo diffusion location easily visible to the naked eye, causing dynamic image smearing and affecting the display quality. SUMMARY OF THE INVENTION

[0005] The present application provides a display module and a display device, which can improve the phenomenon of dynamic image ghosting and enhance the display effect.

[0006] On the one hand, an embodiment of the present application provides a display module, comprising: a light-emitting substrate, a first light modulation component, a second light modulation component, an array substrate and a first polarizer, wherein the light-emitting substrate comprises a plurality of light-emitting areas; the first light modulation component is arranged on the light-emitting side of the light-emitting substrate, and the light transmitted from the first light modulation component is a first polarized light; the second light modulation component is arranged on the side of the first light modulation component away from the light-emitting substrate, and the second light modulation component comprises a plurality of dimming areas, and the dimming areas are arranged corresponding to the light-emitting areas, wherein the second light modulation part of the dimming area corresponding to the light-emitting area in the extinguished state The light transmitted through the component is the second polarized light, and the light transmitted through the second light modulation component in the dimming area corresponding to the light-emitting area in the light-emitting state is the third polarized light; the array substrate is arranged on the side of the second light modulation component away from the first light modulation component; the first polarizer is arranged on the side of the second light modulation component away from the first light modulation component; wherein the vibration direction of the first polarized light is not parallel to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is not parallel to the polarization direction of the first polarizer.

[0007] On the other hand, the present application also provides a display device, which includes a frame and a display module, wherein the display module includes: a light-emitting substrate, a first light modulation component, a second light modulation component, an array substrate and a first polarizer, wherein the light-emitting substrate includes a plurality of light-emitting areas; the first light modulation component is arranged on the light-emitting side of the light-emitting substrate, and the light transmitted from the first light modulation component is a first polarized light; the second light modulation component is arranged on the side of the first light modulation component away from the light-emitting substrate, and the second light modulation component includes a plurality of dimming areas, and the dimming areas are arranged corresponding to the light-emitting areas, wherein the dimming areas corresponding to the light-emitting areas in the extinguished state are The light transmitted through the second light modulation component is second polarized light, and the light transmitted through the second light modulation component in the dimming area corresponding to the light-emitting area in the light-emitting state is third polarized light; the array substrate is arranged on the side of the second light modulation component away from the first light modulation component; the first polarizer is arranged on the side of the second light modulation component away from the first light modulation component; wherein the vibration direction of the first polarized light is not parallel to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is not parallel to the polarization direction of the first polarizer. Beneficial effects

[0008] The display module provided by the present application includes: a light-emitting substrate, a first light modulation component, a second light modulation component, an array substrate and a first polarizer, wherein the light-emitting substrate includes a plurality of light-emitting areas; the first light modulation component is arranged on the light-emitting side of the light-emitting substrate, and the light transmitted from the first light modulation component is first polarized light; the second light modulation component is arranged on a side of the first light modulation component away from the light-emitting substrate, and the second light modulation component includes a plurality of dimming areas, and the dimming areas are arranged corresponding to the light-emitting areas, wherein the light transmitted from the second light modulation component in the dimming area corresponding to the light-emitting area in the extinguished state is second polarized light, and the light transmitted from the second light modulation component in the dimming area corresponding to the light-emitting area in the illuminated state is third polarized light; the array substrate is arranged on a side of the second light modulation component away from the first light modulation component; the first polarizer is arranged on a side of the second light modulation component away from the first light modulation component, wherein the vibration direction of the first polarized light is not parallel to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is not parallel to the polarization direction of the first polarizer. The display module matches the panel scanning and backlight scanning processes by setting dynamic adjustment of the dimming zone. Specifically, the first polarizer blocks the second polarized light from passing through, but allows the third polarized light to pass through, thereby reducing the width of the halo in the luminous area in the extinguished state, improving the dynamic image ghosting phenomenon, and enhancing the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is a schematic diagram of a backlight driving timing sequence in the related art.

[0010] FIG. 2 is a schematic diagram of backlight scanning in the related art.

[0011] FIG3 is a schematic diagram of a first structure of a display module provided in an embodiment of the present application;

[0012] FIG4 is a schematic diagram of a second light modulation component in the display module provided in FIG3 ;

[0013] FIG5 is a cross-sectional view of the second light modulation component in the display module provided in FIG3;

[0014] FIG6 is a schematic diagram of a driving structure of a second light modulation component in the display module provided in FIG3 ;

[0015] FIG7 is a schematic diagram of polarized light of the display module provided in FIG3;

[0016] FIG8 is a schematic diagram of a second structure of a display module provided in an embodiment of the present application;

[0017] FIG9 is a schematic diagram of a third structure of a display module provided in an embodiment of the present application;

[0018] FIG10 is a schematic diagram of a fourth structure of a display module provided in an embodiment of the present application;

[0019] FIG11 is a schematic diagram of a fifth structure of a display module provided in an embodiment of the present application;

[0020] FIG12 is a schematic diagram of a sixth structure of a display module provided in an embodiment of the present application;

[0021] FIG13 is a schematic diagram of a seventh structure of a display module provided in an embodiment of the present application;

[0022] FIG14 is a schematic diagram of an eighth structure of a display module provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0023] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0024] As shown in Figure 1, for a 2.56-inch display with a resolution of 1700 pixels and a refresh rate of 90 Hz, each frame F1 in data signal a lasts 11.1 ms, while each line in scan signal b lasts 3.56 μs. The total scan duration 12 is the product of 3.56 μs and the number of lines. The duty cycle of the backlight-on duration in backlight signal 13 (i.e., the proportion of the backlight pulse in Figure 1 to the frame) is less than 5% or even less than 1%, making backlight on and off difficult to achieve.

[0025] As shown in Figure 2, when the scan reaches the lower part 212 of the panel 21, the sub-pixels of the upper part 211 have completed the rotation. At this time, the upper part 221 of the backlight is turned on, while the lower part 222 of the backlight remains off, thereby reducing the ghosting problem caused by the liquid crystal rotation delay.

[0026] However, mini-LED displays employing a backlight scanning solution can present a halo problem. For example, in virtual reality (VR) applications, mini-LEDs are used in small panels, typically 2-2.5 inches. This halo diffusion accounts for a significant portion of the overall panel, making the liquid crystal's rotational motion at the diffusion location easily visible to the naked eye. This creates severe smearing, resulting in poor display quality.

[0027] As shown in Figures 3 and 4, an embodiment of the present application provides a display module 100, comprising: a light-emitting substrate 10, a first light modulation component 20, a second light modulation component 30, a first polarizer 41, and an array substrate 42. Specifically, the display module 100 includes a liquid crystal cell 50, which includes the array substrate 42, a liquid crystal layer, and an opposing substrate positioned opposite the array substrate 42.

[0028] The light-emitting substrate 10 includes a plurality of light-emitting areas 01, wherein the light-emitting areas 01 are configured to be in a light-emitting state or an off-lighting state. Specifically, in the same scanning cycle, some of the light-emitting areas 01 are in an off-lighting state, while others are in a light-emitting state.

[0029] The first light modulator 20 is located on the light-emitting side of the light-emitting substrate 10. The light emitted from the first light modulator 20 is of the first polarization. The second light modulator 30 is located on the side of the first light modulator 20 away from the light-emitting substrate 10. The second light modulator 30 includes a plurality of dimming zones 02, which are arranged corresponding to the light-emitting zones 01.

[0030] Among them, the light transmitted through the second light modulation component 30 of the dimming zone 02 corresponding to the light-emitting zone 01 in the extinguished state is the second polarized light, and the light transmitted through the second light modulation component 30 of the dimming zone 02 corresponding to the light-emitting zone 01 in the light-emitting state is the third polarized light.

[0031] The light transmitted through the first polarizer 41 is first polarized light. The array substrate 42 is disposed on the side of the second light modulation component 30 away from the first light modulation component 20. The first polarizer 41 is disposed on the side of the second light modulation component 30 away from the first light modulation component 20. Specifically, the first polarizer 41 is disposed on the side of the array substrate 42 closer to the second light modulation component 30.

[0032] The display module further includes a second polarizer 43 . The second polarizer 43 is disposed on a side of the array substrate 42 away from the second light modulation component 30 .

[0033] The vibration direction of the first polarized light is not parallel to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is not parallel to the polarization direction of the first polarizer.

[0034] The display module 100 provided in the embodiment of the present application is configured with a first light modulation component 20 to transmit first polarized light, a second light modulation component 30 to enable dimming zone 02 corresponding to light-emitting zone 01 in an extinguished state to transmit second polarized light, and dimming zone 02 corresponding to light-emitting zone 01 in an illuminated state to normally transmit third polarized light, and a first polarizer 41 to transmit third polarized light, thereby providing the display area with the light required for display. The first polarizer 41 is also used to absorb the second polarized light to prevent halo from spreading to the display area. In other words, by dynamically adjusting the dimming zone 02 to match the panel scanning and backlight scanning processes, the halo diffusion width is dynamically controlled, thereby improving the smearing phenomenon of dynamic images and enhancing the display quality.

[0035] As shown in Figure 4, the second light modulation component 30 is divided into a plurality of dimming zones 02. Specifically, the light emitting zones are arranged in a one-to-one correspondence with the dimming zones 02. The widths of the plurality of dimming zones 02 may be equal or unequal.

[0036] In an embodiment of the present application, the first light modulation component 20 includes a dual brightness enhancement film (DBEF) 21a. The DBEF 21a is configured to convert light rays in the display light provided by the light-emitting substrate 10, whose vibration direction is perpendicular to the transmission axis of the DBEF 21a, into first polarized light. Specifically, the transmission axis of the DBEF 21a is oriented at 0 degrees. That is, the DBEF 21a can convert light rays in the display light provided by the light-emitting substrate 10, whose vibration direction is perpendicular to the transmission axis of the DBEF 21a, into horizontally polarized light through multiple reflections. These parallel polarized light rays are then passed through the first polarizer 41, thereby improving the backlight display brightness.

[0037] In an embodiment of the present application, the light-emitting substrate 10 includes a plurality of light-emitting devices 11 arranged in an array, and the light-emitting devices 11 include light-emitting diodes or mini light-emitting diodes.

[0038] In an embodiment of the present application, the display module further includes a light board 51 . The light emitting substrate 10 is located on one side of the light board 51 . The light board 51 is used to support the light emitting substrate 10 .

[0039] In an embodiment of the present application, the display module further includes a diffusion film 60 and a brightness enhancement film 70 . The diffusion film 60 is disposed on the light-emitting side of the light-emitting substrate 10 , and the brightness enhancement film 70 is disposed on a side of the diffusion film 60 away from the light-emitting substrate 10 .

[0040] In an embodiment of the present application, the diffusion film 60 is mainly composed of a three-layer structure, including a bottom anti-scratch layer, a middle transparent polyester substrate layer, and a top diffusion layer. The working principle of the diffusion film 60 is as follows: light is incident from the bottom anti-scratch layer, then penetrates the highly transparent polyester substrate, and then is scattered by the diffusion particles dispersed in the diffusion coating to form a uniform surface light source. Most of the diffusion particles are spherical and their function is similar to that of a convex lens. When light passes through these particles, it is focused within a certain output angle, thereby achieving the function of enhancing the brightness of the output light. In addition, the particles of different sizes in the diffusion layer also ensure that the light will not be directly emitted from the diffusion film 60, thereby achieving an atomization effect.

[0041] In the embodiment of the present application, the diffuser 60 comprises a bottom diffuser and a top diffuser. The bottom diffuser, located near the light-emitting substrate 10, converts the uneven light emitted from the substrate 10 into a uniformly distributed, blurred surface light source, while also masking printed dots or other optical defects. The top diffuser, located on the side of the bottom diffuser away from the light-emitting substrate 10, possesses high light penetration, improves viewing angles, softens the light source, and serves both as a diffuser and protects the brightness enhancement film 70.

[0042] In the embodiments of the present application, the brightness enhancement film 70 can be a single layer or multiple layers. In this application, the brightness enhancement film 70 has two layers. The brightness enhancement film 70 is also called a prismatic film based on its microscopic prismatic structure. Based on the process by which it modifies the direction of light to achieve a brighter effect, it is also called a brightness enhancement film (BEF). The brightness enhancement film 70 is a transparent optical film composed of three layers. The light-incident surface of the bottom layer requires a certain degree of haze through back coating, the middle layer is a transparent polyester substrate layer, and the light-exiting surface of the top layer has a micro-prismatic structure. The operating principle of the brightness enhancement film 70 is that light passes through the light-incident surface and the transparent polyester substrate layer. When the prismatic layer passes through the fine prismatic structure on its surface, the light intensity distribution is controlled by refraction, total reflection, and light accumulation. This concentrates scattered light toward the front, and unused light outside the viewing angle is recycled through light reflection, reducing light loss while improving overall brightness and uniformity. This increases the brightness of the display panel and controls the viewing angle.

[0043] As shown in Figure 5, the second light modulation component 30 includes a first electrode layer 31 and a second electrode layer 32. The first electrode layer 31 and the second electrode layer 32 are arranged opposite to each other. The display module also includes a liquid crystal layer 33, which is located between the second light modulation component 30 and the first polarizer 41, and the liquid crystal layer 33 is arranged between the first electrode layer 31 and the second electrode layer 32. The liquid crystal layer 33 includes a plurality of liquid crystal molecules, which are deflected under the electric field formed by the first electrode layer 31 and the second electrode layer 32, changing the deflection angle, thereby realizing the regulation of light. Specifically, an insulating transparent film layer can be provided on the side of the first electrode layer 31 and the second electrode layer 32 away from the liquid crystal layer 33 to protect the first electrode layer 31 and the second electrode layer 32 from external interference.

[0044] In the embodiment of the present application, both the first electrode layer 31 and the second electrode layer 32 include multiple transparent electrodes 301. Transparent electrodes 301 located in different dimming zones 02 are connected to different voltage output terminals, which are used to output deflection voltages to the transparent electrodes 301. This allows for independent control of the deflection angles of the liquid crystal molecules within each dimming zone 02, dynamically controlling the diffusion width of the halo, improving the smearing effect of dynamic images, and enhancing the display quality. Specifically, transparent electrodes 301 located in the same dimming zone 02 are connected to the same voltage output terminal.

[0045] In the embodiment of the present application, the dimming zone 02 has a first state and a second state. When the light-emitting zone 01 is in the emitting state, the dimming zone 02 corresponding to the light-emitting zone 01 is in the first state. When the light-emitting zone 01 is in the extinguishing state, the dimming zone 02 corresponding to the light-emitting zone 01 is in the second state. Under the control of the deflection voltage, the phase delay difference between the light passing through the portion of the second light modulation component in the dimming zone 02 in the first state and the light passing through the portion of the second light modulation component in the dimming zone 02 in the second state is 90 degrees or 45 degrees. In other words, by controlling the magnitude of the deflection voltage, the deflection angle of the liquid crystal molecules in the dimming zone 02 in the first state and the deflection angle of the liquid crystal molecules in the dimming zone 02 in the second state are independently controlled, so that the second light modulation component 30 forms at least two dimming zones 02 with a phase delay difference of 90 degrees or 45 degrees, thereby dynamically controlling the diffusion width of the halo, improving the smear phenomenon of dynamic images, and enhancing the display effect.

[0046] In an embodiment of the present application, the phase delay difference between the light passing through the portion of the dimming zone 02 in the first state in the second light modulation component and the light passing through the portion of the dimming zone 02 in the second state in the second light modulation component is less than or equal to (n+1 / 2)*λ, where n is an integer and λ refers to the wavelength.

[0047] In an embodiment of the present application, the direction of the light transmission axis of the second light modulation component 30 in the first state is perpendicular to the direction of the light transmission axis of the second light modulation component 30 in the second state, or the angle between the direction of the light transmission axis of the second light modulation component 30 in the first state and the direction of the light transmission axis of the second light modulation component 30 in the second state is 45 degrees.

[0048] In the embodiment of the present application, the plurality of dimming zones 02 may be arranged along a first direction or a second direction, the first direction being perpendicular to the second direction. Specifically, the first direction and the second direction may be the row / column direction or the column / row direction of the arrangement of the light emitting devices 11 in the light emitting substrate 10, respectively.

[0049] As shown in FIG6 , the first light modulation component 20 is driven by one driver chip IC, but may also be driven by two or more driver chips ICs.

[0050] As shown in Figure 7, the first polarizer 41 is disposed on the side of the array substrate 42 that is closest to the light-emitting substrate 10. Preferably, the vibration direction of the first polarized light is perpendicular to the vibration direction of the second polarized light. Specifically, the display module further includes an opposing substrate that opposes the array substrate 42. The second polarizer 43 is disposed on the side of the opposing substrate that is farther from the first polarizer 41. The transmission axis of the second polarizer 43 is parallel to the vibration direction of the second polarized light, meaning that the light transmitted through the second polarizer 43 is the second polarized light.

[0051] In the embodiment of the present application, the transmission axis of the first polarizer 41 is parallel to the transmission axis of the first light modulator 20, allowing the first polarized light L transmitted by the second light modulator 30 to pass through the first polarizer 41 normally. However, the second polarized light H transmitted by the second light modulator 30 is absorbed by the first polarizer 41 and cannot pass through the first polarizer 41. The transmission axis of the second polarizer 43 is perpendicular to the transmission axis of the first polarizer 41, allowing the second polarized light H transmitted by the liquid crystal cell 50 to pass through the second polarizer 43 for display. Both the first polarized light L and the second polarized light H are linearly polarized. By controlling the transmission of the second polarized light H through the dimming zone 02 in the second state, the halo diffusion width can be dynamically controlled, reducing the smearing phenomenon of dynamic images and improving the display quality.

[0052] As shown in FIG8 , an embodiment of the present application provides a display module 200. Display module 200 differs from display module 100 in that the first light modulation component 20 in display module 200 includes an advance polarizer film (APF) 22. This APF is a linear reflective polarizer with an absorption axis along the width direction and a transmission axis along the length direction. Light transmitted through the APF 22 is first polarized light. Specifically, the transmission axis of the APF 22 is parallel to the vibration direction of the first polarized light.

[0053] In the embodiment of the present application, the first polarizer 41 is disposed on a side of the second light modulation component 30 away from the light-emitting substrate 10. Preferably, the vibration direction of the first polarized light is perpendicular to the vibration direction of the second polarized light. Specifically, the display module further includes an opposing substrate opposing the array substrate 42. The second polarizer 43 is disposed on a side of the opposing substrate away from the first polarizer 41. The transmission axis of the second polarizer 43 is parallel to the vibration direction of the second polarized light, meaning that the light transmitted through the second polarizer 43 is the second polarized light.

[0054] The rest of the structure of the display module 200 is the same as that of the display module 100 .

[0055] As shown in FIG9 , an embodiment of the present application provides a display module 300. Display module 300 differs from display module 100 in that: in display module 300, a first polarizer 41 is disposed on a side of the first light modulation component 20 away from the light-emitting substrate 10, and a second light modulation component 30 is disposed on a side of the first polarizer 41 away from the light-emitting substrate 10. Specifically, the display module further includes an opposing substrate that opposes the array substrate 42. A second polarizer 43 is disposed on a side of the opposing substrate away from the first polarizer 41.

[0056] In the embodiment of the present application, the first light modulation component 20 in the display module 300 includes a birefringent reflective polarizer 22 (Advance Polarizer Film, APF). The birefringent reflective polarizer 22 is a linear reflective polarizer with an absorption axis along the width direction and a transmission axis along the length direction. Light that passes through the birefringent reflective polarizer 22 is first polarized light. Specifically, the transmission axis of the birefringent reflective polarizer 22 is parallel to the vibration direction of the first polarized light.

[0057] The rest of the structure of the display module 300 is the same as that of the display module 100 .

[0058] As shown in FIG10 , an embodiment of the present application provides a display module 400. Display module 400 differs from display modules 200 / 300 in that it further includes an advance light control film (ALCF) 80. The ALCF controls the optical fiber's emission angle, preventing light at large angles from being emitted and allowing only light at small angles (less than 60 degrees) to be emitted. The light control film 80 is disposed on the side of the first light modulation component 20 away from the light-emitting substrate 10.

[0059] In the display module 400, the second light modulation component 30 is disposed on a side of the light control film 80 away from the light-emitting substrate 10, and the first polarizer 41 is disposed on a side of the second light modulation component 30 away from the light-emitting substrate 10. Specifically, the display module further includes an opposing substrate that is opposite to the array substrate 42. The second polarizer 43 is disposed on a side of the opposing substrate away from the first polarizer 41.

[0060] The rest of the structure of the display module 400 is the same as that of the display modules 200 / 300 .

[0061] As shown in FIG11 , an embodiment of the present application provides a display module 500. Display module 500 differs from display module 100 in that it further includes a third polarizer 23 disposed on the side of the second light modulation component 30 proximal to the light-emitting substrate 10. Light transmitted through the third polarizer 23 is first polarized light. That is, the transmission axis of the third polarizer 23 is parallel to the vibration direction of the first polarized light.

[0062] In the embodiment of the present application, the second light modulation component 30 is a dimming panel. The dimming panel includes a first substrate 31, a second substrate 32, and a liquid crystal layer 33. The first substrate 31 and the second substrate 32 are arranged opposite each other, with the liquid crystal layer 33 disposed between them. A first electrode layer 31 is provided on the first substrate 31, and a second electrode layer 32 is provided on the second substrate 32. Liquid crystal molecules in the liquid crystal layer 33 are deflected by the electric field formed by the first and second electrode layers 31 and 32, thereby modulating light. Both the first and second electrode layers 31 and 32 include multiple transparent electrodes. Transparent electrodes located in different dimming zones 02 are connected to different voltage output terminals, which are used to output deflection voltages to the transparent electrodes. This allows for independent control of the deflection angles of the liquid crystal molecules in each dimming zone, dynamically controlling the diffusion width of the halo, reducing the smearing effect in dynamic images, and enhancing the display quality. Specifically, transparent electrodes in the same dimming zone are connected to the same voltage output terminal.

[0063] In an embodiment of the present application, a dimming panel includes multiple dimming zones, each having a first state and a second state. When the light-emitting zone is in the luminous state, the dimming zone corresponding to the light-emitting zone is in the first state. When the light-emitting zone is in the extinguished state, the dimming zone corresponding to the light-emitting zone is in the second state. Under the control of a deflection voltage, the phase delay difference between the portion of the second light modulation component in the dimming zone 02 in the first state and the portion of the second light modulation component in the dimming zone 02 in the second state is 90 degrees or 45 degrees. That is, by controlling the magnitude of the deflection voltage, the deflection angle of the liquid crystal molecules in the dimming zone in the first state and the deflection angle of the liquid crystal molecules in the dimming zone in the second state are independently controlled, so that the second light modulation component 30 forms at least two dimming zones with a phase delay difference of 90 degrees or 45 degrees, thereby dynamically controlling the diffusion width of the halo, improving the smear phenomenon of dynamic images, and enhancing the display effect.

[0064] In an embodiment of the present application, the first polarizer 41 is disposed on the side of the second light modulation component 30 away from the light-emitting substrate 10. Specifically, the first polarizer 41 is disposed on the side of the dimming panel away from the light-emitting substrate 10. The display module includes a liquid crystal cell 50, which includes an array substrate 42, a liquid crystal layer, and an opposing substrate opposite the array substrate 42. The liquid crystal cell 50 is disposed on the side of the first polarizer 41 away from the light-emitting substrate 10 and is used to convert the first polarized light into the second polarized light. Preferably, the vibration direction of the first polarized light is perpendicular to the vibration direction of the second polarized light. The liquid crystal cell 50 converts the first polarized light into the second polarized light. The second polarizer 43 is disposed on the side of the liquid crystal cell 50 away from the first polarizer 41. The transmission axis of the second polarizer 43 is parallel to the vibration direction of the second polarized light, that is, the light transmitted through the second polarizer 43 is the second polarized light.

[0065] In an embodiment of the present application, the light-emitting substrate 10 includes a plurality of light-emitting devices 11 arranged in an array, and the light-emitting devices 11 include light-emitting diodes or mini light-emitting diodes.

[0066] In the embodiment of the present application, the display module further includes a light board 51, a diffusion film 60, and a brightness enhancement film 70. The light-emitting substrate 10 is located on one side of the light board 51, and the light board 51 is used to support the light-emitting substrate 10. The diffusion film 60 is provided on the light-emitting side of the light-emitting substrate 10, and the brightness enhancement film 70 is provided on the side of the diffusion film 60 away from the light-emitting substrate 10. The diffusion film 60 and the brightness enhancement film 70 are both provided in two stacked layers.

[0067] As shown in Figure 12, an embodiment of the present application provides a display module 600. The difference between the display module 600 and the display module 500 is that the display module 600 also includes a reflective brightness enhancement film 21a. The reflective brightness enhancement film 21a is arranged on the side of the first light modulation component 20 close to the light-emitting substrate 10. The reflective brightness enhancement film 21a is used to convert the display light provided by the light-emitting substrate 10, the light whose vibration direction is perpendicular to the light transmission axis of the reflective brightness enhancement film 21a, into a first polarized light.

[0068] The rest of the structure of the display module 600 is the same as that of the display module 500 .

[0069] As shown in Figure 13, an embodiment of the present application provides a display module 700. The difference between the display module 700 and the display module 500 is that the display module 700 also includes a light control film 80, which is arranged on the side of the first light modulation component 20 close to the light-emitting substrate 10.

[0070] The rest of the structure of the display module 700 is the same as that of the display module 500 .

[0071] As shown in FIG14 , an embodiment of the present application provides a display module 800. Display module 800 differs from display module 500 in that display module 800 further includes a reflective brightness enhancement film 21a and a light control film 80. The reflective brightness enhancement film 21a is disposed on the side of the first light modulation component 20 that is closer to the light-emitting substrate 10. The reflective brightness enhancement film 21a is configured to convert light from the display light provided by the light-emitting substrate 10, whose vibration direction is perpendicular to the light transmission axis of the reflective brightness enhancement film 21a, into first polarized light. The light control film 80 is disposed on the side of the reflective brightness enhancement film 21a that is farther from the light-emitting substrate 10.

[0072] The rest of the structure of the display module 800 is the same as that of the display module 500 .

[0073] On the other hand, the present application further provides a display device, comprising the display module and a frame as described above, wherein the display module is disposed in the frame.

[0074] The above is a detailed introduction to a display module and a display device provided by the embodiments of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application, and the above description should not be understood as limiting the scope of protection of the present application.

Claims

1. A display module, comprising: A light-emitting substrate, the light-emitting substrate comprising a plurality of light-emitting areas; a first light modulation component, wherein the first light modulation component is disposed on the light-emitting side of the light-emitting substrate, and the light transmitted through the first light modulation component is a first polarized light; a second light modulation component, the second light modulation component being arranged on a side of the first light modulation component away from the light-emitting substrate, the second light modulation component comprising a plurality of dimming areas, the dimming areas being arranged corresponding to the light-emitting areas, wherein the light transmitted through the second light modulation component in the dimming area corresponding to the light-emitting area in an extinguished state is the second polarized light, and the light transmitted through the second light modulation component in the dimming area corresponding to the light-emitting area in a light-emitting state is the third polarized light; an array substrate, disposed on a side of the second light modulation component away from the first light modulation component; a first polarizer, the first polarizer being disposed on a side of the second light modulation component away from the first light modulation component; Among them, the vibration direction of the first polarized light is not parallel to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is not parallel to the polarization direction of the first polarizer.

2. The display module according to claim 1, wherein: The second light modulation component includes a first electrode layer, a second electrode layer and a liquid crystal layer. The first electrode layer and the second electrode layer are arranged opposite to each other, and the liquid crystal layer is arranged between the first electrode layer and the second electrode layer.

3. The display module according to claim 2, wherein: The first electrode layer and the second electrode layer each include a plurality of transparent electrodes, and the transparent electrodes located in different dimming zones are respectively connected to different voltage output terminals.

4. The display module according to claim 3, wherein: The dimming zone corresponding to the light-emitting zone in the light-emitting state is in a first state, and the dimming zone corresponding to the light-emitting zone in the extinguished state is in a second state. Under the control of the deflection voltage at the voltage output end, the phase delay difference between the part of the dimming zone in the second light modulation component in the first state and the part of the dimming zone in the second state in the second light modulation component includes 90 degrees or 45 degrees.

5. The display module according to claim 1, wherein: The first polarizer is disposed on a side of the array substrate close to the second light modulation component; or, The first polarizer is arranged on a side of the array substrate away from the second light modulation component.

6. The display module according to claim 1, wherein: The vibration direction of the first polarized light is perpendicular to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is perpendicular to the polarization direction of the first polarizer.

7. The display module according to claim 1, wherein: The first light modulation component includes a reflective brightness enhancement film, and the light transmitted through the reflective brightness enhancement film is the first polarized light.

8. The display module according to claim 1, wherein: The first light modulation component includes a birefringent reflective polarizer, and the light transmitted through the birefringent reflective polarizer is the first polarized light.

9. The display module according to claim 8, wherein: The display module further comprises a light control film, and the light control film is arranged on a side of the first light modulation component close to the light emitting substrate.

10. The display module according to claim 5, wherein: The display module further includes a reflective brightness enhancement film, which is disposed on a side of the first light modulation component close to the light-emitting substrate, and the light transmitted through the reflective brightness enhancement film is the first polarized light; and / or, The display module further comprises a light control film, which is arranged on a side of the first light modulation component close to the light-emitting substrate or on a side of the reflective brightness enhancement film away from the light-emitting substrate.

11. The display module according to claim 10, wherein: The display module further includes a second polarizer and a third polarizer. The second polarizer and the first polarizer are arranged on opposite sides of the array substrate, and the third polarizer is arranged on a side of the second light modulation component close to the light-emitting substrate.

12. The display module according to claim 1, wherein: The display module further comprises a diffusion film and a brightness enhancement film. The diffusion film is arranged on the light emitting side of the light emitting substrate, and the brightness enhancement film is arranged on a side of the diffusion film away from the light emitting substrate.

13. A display device, comprising a frame and a display module, wherein the display module comprises: A light-emitting substrate, the light-emitting substrate comprising a plurality of light-emitting areas; a first light modulation component, wherein the first light modulation component is disposed on the light-emitting side of the light-emitting substrate, and the light transmitted through the first light modulation component is a first polarized light; a second light modulation component, the second light modulation component being arranged on a side of the first light modulation component away from the light-emitting substrate, the second light modulation component comprising a plurality of dimming areas, the dimming areas being arranged corresponding to the light-emitting areas, wherein the light transmitted through the second light modulation component in the dimming area corresponding to the light-emitting area in an extinguished state is the second polarized light, and the light transmitted through the second light modulation component in the dimming area corresponding to the light-emitting area in a light-emitting state is the third polarized light; an array substrate, disposed on a side of the second light modulation component away from the first light modulation component; a first polarizer, the first polarizer being disposed on a side of the second light modulation component away from the first light modulation component; Among them, the vibration direction of the first polarized light is not parallel to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is not parallel to the polarization direction of the first polarizer.

14. The display device according to claim 13, wherein: The second light modulation component includes a first electrode layer, a second electrode layer and a liquid crystal layer. The first electrode layer and the second electrode layer are arranged opposite to each other, and the liquid crystal layer is arranged between the first electrode layer and the second electrode layer.

15. The display device according to claim 14, wherein: The first electrode layer and the second electrode layer each include a plurality of transparent electrodes, and the transparent electrodes located in different dimming zones are respectively connected to different voltage output terminals.

16. The display device according to claim 15, wherein: The dimming zone corresponding to the light-emitting zone in the light-emitting state is in a first state, and the dimming zone corresponding to the light-emitting zone in the extinguished state is in a second state. Under the control of the deflection voltage at the voltage output end, the phase delay difference between the part of the dimming zone in the second light modulation component in the first state and the part of the dimming zone in the second state in the second light modulation component includes 90 degrees or 45 degrees.

17. The display device according to claim 13, wherein: The first polarizer is disposed on a side of the array substrate close to the second light modulation component; or, The first polarizer is arranged on a side of the array substrate away from the second light modulation component.

18. The display device according to claim 13, wherein: The vibration direction of the first polarized light is perpendicular to the vibration direction of the second polarized light, the vibration direction of the first polarized light is parallel to the vibration direction of the third polarized light, and the vibration direction of the second polarized light is perpendicular to the polarization direction of the first polarizer.

19. The display device according to claim 18, wherein: The display module further includes a reflective brightness enhancement film, which is disposed on a side of the first light modulation component close to the light-emitting substrate, and the light transmitted through the reflective brightness enhancement film is the first polarized light; and / or, The display module further comprises a light control film, which is arranged on a side of the first light modulation component close to the light-emitting substrate or on a side of the reflective brightness enhancement film away from the light-emitting substrate.

20. The display device according to claim 19, wherein: The display module further includes a second polarizer and a third polarizer. The second polarizer and the first polarizer are arranged on opposite sides of the array substrate, and the third polarizer is arranged on a side of the second light modulation component close to the light-emitting substrate.

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