Display module and display device

Abstract

This invention discloses a display module and a display device. The display module includes a display panel and a backlight assembly. The backlight assembly includes a light-transmitting portion having a first light-transmitting sub-part and a light source layer having a light source portion and a filter portion. The orthographic projection of the first light-transmitting sub-part on the display panel is located within the orthographic projection of the filter portion on the display panel. The filter portion has a reflectivity of visible light greater than or equal to 90% and a transmittance of infrared light greater than or equal to 80%. By setting the filter portion, the filter portion covers the first light-transmitting sub-part, and the filter portion reflects visible light and transmits infrared light. When the display module is applied to the display device, the display panel does not affect the infrared photosensitive sensor's reception of infrared light while displaying the screen normally. It also increases the light output of the light source portion in the light-transmitting portion, thereby improving the uniformity of the screen display between the first display area and the second display area of ​​the display module and enhancing the display effect.

Description

Technical Field

[0001] This invention relates to the field of displays, and more specifically to a display module and a display device. Background Technology

[0002] With the development of LCD technology, especially full-screen technology, under-display camera technology has been widely applied. For example, in automotive displays, it uses infrared sensors to monitor driver seatbelt use, fatigue, and distraction. Under-display camera technology places the camera on the backlight side of the display panel without compromising its integrity, dividing the display area into a regular display area and a camera area. Even when the camera is off, the camera area still participates in the display, thus achieving a full-screen display. However, in existing display modules using under-display camera technology, the backlight assembly requires a large aperture to ensure proper camera imaging. Since there is no light source within the aperture area, the display in the camera area is often dark or even blank, affecting the overall display quality.

[0003] Therefore, there is an urgent need for a display module and display device to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides a display module and display device that can alleviate the technical problem that the display effect of the display module is affected by the opening of the backlight component of the display module.

[0005] This invention provides a display module having a first display area and a second display area surrounding the first display area, the display module comprising:

[0006] Display panel;

[0007] A backlight assembly, located on one side of the display panel, includes a light-transmitting portion located within the first display area;

[0008] The backlight assembly includes a light source layer, and the light-transmitting part includes a first light-transmitting sub-part. The first light-transmitting sub-part is located on the side of the light source layer away from the display panel. The light source layer includes a light source part and a filter part. The orthographic projection of the first light-transmitting sub-part on the display panel is located within the orthographic projection of the filter part on the display panel.

[0009] The filter has a reflectivity of 90% or higher for visible light and a transmittance of 80% or higher for infrared light.

[0010] In some embodiments, the light source portion includes a plurality of first-type light source sub-parts and a plurality of second-type light source sub-parts, wherein the first-type light source sub-parts are disposed around the first light-transmitting sub-part, and the second-type light source sub-parts are located on the side of the first-type light source sub-parts away from the light-transmitting sub-part;

[0011] The minimum distance between the first type of light source sub-part and the second type of light source sub-part is less than the minimum distance between the second type of light source sub-parts.

[0012] In some embodiments, the minimum spacing between the first type of light source sub-parts is less than the minimum spacing between the first type of light source sub-parts and the second type of light source sub-parts in the direction from the center of the first display area to the periphery.

[0013] In some embodiments, the control unit of the first type of light source sub-unit is different from the control unit of the second type of light source sub-unit.

[0014] In some embodiments, the light-transmitting portion further includes a second light-transmitting sub-portion, which is located on the side of the light source layer closer to the display panel;

[0015] The orthographic projection of the first light-transmitting sub-part on the display panel is located within the orthographic projection of the second light-transmitting sub-part on the display panel.

[0016] In some embodiments, the orthographic projection of the filter portion on the display panel is located within the orthographic projection of the second light-transmitting portion on the display panel;

[0017] The orthographic projection of a portion of the light source on the display panel is located within the orthographic projection of the second light-transmitting sub-part on the display panel.

[0018] In some embodiments, the display module further includes a lens component, the orthographic projection of the lens component on the display panel being located within the orthographic projection of the second light-transmitting sub-part on the display panel, the lens component including at least one arc surface protruding toward the display panel.

[0019] In some embodiments, the backlight assembly further includes a dispensing portion, which covers the light source portion one by one. The dispensing portion includes a first dispensing sub-part, the orthographic projection of the first dispensing sub-part on the display panel is located within the orthographic projection of the second light-transmitting sub-part on the display panel, and the first dispensing sub-part is integrally disposed with the lens component.

[0020] In some embodiments, the backlight assembly further includes a back plate located on the side of the light source layer away from the display panel, wherein the first light-transmitting sub-part penetrates at least through the back plate;

[0021] The backlight assembly further includes at least one optical film layer located between the light source layer and the display panel, wherein the second light-transmitting sub-part penetrates the optical film layer.

[0022] In some embodiments, the height of the light source portion is greater than or equal to the thickness of the filter portion.

[0023] The present invention also provides a display device, including a display module as described above, and an infrared photosensitive sensor, wherein the infrared photosensitive sensor is disposed corresponding to the light-transmitting portion and is located on the side of the backlight assembly of the display module away from the display panel.

[0024] By setting a filter section, the present invention covers the first light-transmitting sub-section and reflects visible light while transmitting infrared light. When the display module is applied to a display device, the display panel does not affect the infrared photosensitive sensor's reception of infrared light while displaying the screen normally. It also increases the amount of light emitted by the light source in the light-transmitting sub-section, thereby improving the uniformity of the screen display between the first and second display areas of the display module and enhancing the display effect. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the first structure of the display module provided in the embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of a second structure of the display module provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the third structure of the display module provided in the embodiments of the present invention;

[0029] Figure 4 This is a schematic diagram of the fourth structure of the display module provided in the embodiments of the present invention;

[0030] Figure 5 This is a schematic diagram of a backlight assembly of a display module provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the light source section of the display module provided in an embodiment of the present invention;

[0032] Figure 7 The light transmittance of the NSR material used in the filter section of the display module provided in this embodiment of the invention;

[0033] Figure 8 yes Figure 2 The diagram shows the light emission range of a portion of the first light source sub-unit when the display module is structured.

[0034] Figure 9 yes Figure 3 The diagram shows the light emission range of a portion of the first light source sub-unit when the display module is structured.

[0035] Figure 10 yes Figure 5 The diagram shows the spatial brightness distribution of the backlight assembly.

[0036] Figure 11 yes Figure 5 The diagram shows the viewing angle brightness distribution of the backlight assembly.

[0037] Figure 12 This is a schematic diagram of the first structure of the display device provided in the embodiment of the present invention;

[0038] Figure 13 This is a schematic diagram of a second structure of the display device provided in an embodiment of the present invention. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0040] Currently, because the backlight component of the display module has a large opening for the camera, the image displayed in the camera area corresponding to the main body of the display module is dark or even has no image, resulting in a technical problem that is difficult to improve the display effect.

[0041] Please see Figures 1 to 6 This invention provides a display module 100, having a first display area 102 and a second display area 103 surrounding the first display area 102. The display module 100 includes:

[0042] Display panel 101;

[0043] The backlight assembly 104 is located on one side of the display panel 101 and includes a light-transmitting portion 105 located within the first display area 102;

[0044] The backlight assembly 104 includes a light source layer 106, and the light-transmitting part 105 includes a first light-transmitting sub-part 107. The first light-transmitting sub-part 107 is located on the side of the light source layer 106 away from the display panel 101. The light source layer 106 includes a light source part 108 and a light filter part 109. The orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is located within the orthographic projection of the light filter part 109 on the display panel 101.

[0045] The filter element 109 has a reflectivity of 90% or higher for visible light and a transmittance of 80% or higher for infrared light.

[0046] In this embodiment of the invention, a filter section 109 is provided in the backlight assembly 104. The filter section 109 covers the first light-transmitting sub-section 107 and reflects visible light while transmitting infrared light. When the display module 100 is applied to a display device, the display panel 101 does not affect the infrared photosensitive sensor's reception of infrared light while displaying the screen normally. The amount of light emitted by the light source section 108 in the light-transmitting sub-section 105 is increased, thereby improving the uniformity of the screen display between the first display area 102 and the second display area 103 of the display module 100 and enhancing the display effect.

[0047] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0048] In this embodiment, the reflectivity of the filter element 109 to visible light is greater than or equal to 90%, and the transmittance of the filter element 109 to infrared light is greater than or equal to 80%. Visible light refers to light waves with wavelengths in the range of 400 nanometers to 760 nanometers; infrared light has a wavelength greater than 760 nanometers. The reflectivity of the filter element 109 to visible light can be 91%, 92%, 93%, 95%, 96%, 97%, 99%, 100%, etc., and the transmittance of the filter element 109 to infrared light can be 82%, 84%, 85%, 88%, 90%, 95%, 96%, 100%, etc. By utilizing the reflection of visible light by the filter section 109, light from the light source section 108 is reflected through the filter section 109 into the light-transmitting section 105, thereby increasing the amount of light emitted by the light source section 108 in the light-transmitting section 105, improving the uniformity of image display between the first display area 102 and the second display area 103, and enhancing the display effect of the display module 100. By utilizing the transmission of infrared light by the filter section 109, when the display module 100 is applied to a display device, interference is avoided in the reception of infrared light by the infrared photosensor correspondingly disposed in the light-transmitting section 105.

[0049] In some embodiments, the material of the filter portion 109 may include polyethylene terephthalate (PET) or polycarbonate (PC).

[0050] In some embodiments, the filter portion 109 may employ a commercially available film material, such as a near-infrared transmission system-reflector film (NSR). Please refer to [link to relevant documentation]. Figure 7 The filter 109 is formed using a commercially available near-infrared transmissive reflective film, which has an infrared transmittance greater than or equal to 84% and a visible light transmittance less than or equal to 1%, meaning that its reflectance to visible light is greater than or equal to 99%.

[0051] Please see Figures 1 to 6 In some embodiments, the light source 108 includes a plurality of first type light source sub-parts 110 and a plurality of second type light source sub-parts 111. The first type light source sub-parts 110 are arranged around the first light-transmitting sub-part 107, and the second type light source sub-parts 111 are located on the side of the first type light source sub-part 110 away from the light-transmitting part 105.

[0052] Please see Figure 6In some embodiments, within a first plane, a plurality of first-type light source sub-parts 110 are arranged in a ring around the first light-transmitting sub-part 107, and the first plane is a plane parallel to the light-emitting surface of the display panel 101. The plurality of first-type light source sub-parts 110 are arranged in a ring around the first light-transmitting sub-part 107, that is, the light source part 108 includes at least one first-type light source group 112, and each ring of multiple first-type light source sub-parts 110 surrounding the first light-transmitting sub-part 107 belongs to the same first-type light source group 112. Within a second plane, the second plane is perpendicular to the first plane, and the number of first-type light source sub-parts 110 spaced between the first-type light source sub-parts 110 and the first light-transmitting sub-part 107 within the same first-type light source group 112 is the same. For example, the number of first-type light source sub-parts 110 that are spaced apart from the first light-transmitting sub-part 107 in the first type of light source group 112 (i.e., the first type of light source group 112 formed by the first type of light source sub-parts 110 in the first ring surrounding the first light-transmitting sub-part 107) closest to the first light-transmitting sub-part 107 is 0; the number of first-type light source sub-parts 110 that are spaced apart from the first light-transmitting sub-part 107 in the second type of light source group 112 (i.e., the first type of light source group 112 formed by the first type of light source sub-parts 110 in the second ring surrounding the first light-transmitting sub-part 107) second closest to the first light-transmitting sub-part 107 is 1.

[0053] In some embodiments, within a first plane, a plurality of the first type of light source sub-parts 110 are arranged in an array along a first direction X and a second direction Y, wherein the first direction X is perpendicular to the second direction Y. It is understood that "perpendicular" in this invention refers to perpendicularity within a certain angular error range, for example, 85° to 95° can all be interpreted as perpendicular.

[0054] In some embodiments, within a first plane, a plurality of second-type light source sub-parts 111 are arranged in a ring around the first light-transmitting sub-part 107. The plurality of second-type light source sub-parts 111 are arranged in a ring around the first light-transmitting sub-part 107, meaning that the light source portion 108 includes a plurality of second-type light source groups 113, and each ring of second-type light source sub-parts 111 surrounding the first light-transmitting sub-part 107 belongs to the same second-type light source group 113. Within a second plane, the number of first-type light source sub-parts 110 and the number of second-type light source sub-parts 111 spaced between the second-type light source sub-parts 111 and the first light-transmitting sub-part 107 within the same second-type light source group 113 are the same. For example, when the number of the first type of light source group 112 is 1, the number of the first type of light source sub-parts 110 that are spaced between the second type of light source sub-parts 111 in the second type of light source group 113 (i.e., the second type of light source group 113 formed by the second type of light source sub-parts 111 in the first ring around the first light-transmitting sub-part 107) closest to the first light-transmitting sub-part 107 and the first light-transmitting sub-part 107 is 1; the number of the first type of light source sub-parts 110 that are spaced between the second type of light source sub-parts 111 in the second type of light source group 113 (i.e., the second type of light source group 113 formed by the second type of light source sub-parts 111 in the second ring around the first light-transmitting sub-part 107 and the first light-transmitting sub-part 107 in the second type of light source group 113 second closest to the first light-transmitting sub-part 107 and the first light-transmitting sub-part 107 in the second type of light source group 113 second closest to the first light-transmitting sub-part 107 and the first light-transmitting sub-part 111 is 1.

[0055] Please see Figure 6 In some embodiments, in a first plane, a plurality of second-type light source sub-parts 111 are arranged in an array along a first direction X and a second direction Y, wherein the first direction X is perpendicular to the second direction Y.

[0056] In some embodiments, along the direction from the center of the first display area 102 to its periphery, the minimum spacing between the first type of light source sub-parts 110 is less than the minimum spacing between the first type of light source sub-parts 110 and the second type of light source sub-parts 111. That is, along the direction from the first type of light source sub-parts 110 to the second type of light source sub-parts 111, the minimum spacing between the first type of light source sub-parts 110 and the second type of light source sub-parts 111 is less than the minimum spacing between the second type of light source sub-parts 111. For example, in the first direction X, the minimum distance between a plurality of first type of light source sub-parts 110 and the second type of light source sub-part 111 that is closest to the first type of light source sub-part 110 is the minimum spacing between the first type of light source sub-parts 110 and the second type of light source sub-part 111; and in the first direction X, the minimum spacing between a plurality of adjacent second type of light source sub-parts 111 is the minimum spacing between the second type of light source sub-parts 111. Alternatively, in the second direction Y, the minimum distance between multiple first-type light source sub-parts 110 within the same group and the second-type light source sub-part 111 closest to that first-type light source sub-part 110 is the minimum spacing between the first-type light source sub-part 110 and the second-type light source sub-part 111; and in the second direction Y, the minimum spacing between multiple adjacent second-type light source sub-parts 111 is the minimum spacing between the second-type light source sub-parts 111. This spacing setting helps to increase the density of light source parts 108 near the light-transmitting portion 105, increasing the light output of the light source parts 108 in the light-transmitting portion 105, thereby reducing the brightness difference between the first display area 102 and the second display area 103 of the display module 100, improving image display uniformity, and enhancing the display effect of the display module 100.

[0057] In some embodiments, along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, the ratio of the minimum distance between the first type of light source sub-part 110 and the second type of light source sub-part 111 to the minimum distance between the second type of light source sub-part 111 is greater than or equal to 1:1.5 and less than or equal to 1:2. For example, it can be 1:1.6, 1:1.7, 1:1.8, 1:1.9, etc., which is beneficial for the reasonable arrangement of the light source parts 108, reducing the brightness difference between the first display area 102 and the second display area 103 of the display module 100, improving the uniformity of the screen display, and enhancing the display effect of the display module 100.

[0058] In some embodiments, along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, the minimum distance between the first type of light source sub-part 110 and the second type of light source sub-part 111 is greater than or equal to 1 mm and less than or equal to 3 mm. For example, it can be 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, 2.5 mm, 2.8 mm, etc.

[0059] In some embodiments, along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, the minimum spacing between the second type of light source sub-parts 111 is greater than or equal to 2 mm and less than or equal to 4 mm. For example, it can be 2.2 mm, 2.4 mm, 2.5 mm, 2.8 mm, 3 mm, 3.2 mm, 3.5 mm, 3.6 mm, 3.8 mm, etc.

[0060] In some embodiments, along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, the minimum spacing between the first type of light source sub-parts 110 is less than the minimum spacing between the first type of light source sub-part 110 and the second type of light source sub-part 111. Specifically, along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, the minimum spacing among adjacent first type of light source sub-parts 110 is the minimum spacing between the first type of light source sub-parts 110; and along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, the minimum spacing among multiple adjacent second type of light source sub-parts 111 is the minimum spacing between the second type of light source sub-parts 111. By setting the above spacing, it is beneficial to increase the density of the light source portion 108 near the light-transmitting portion 105, increase the amount of light emitted by the light source portion 108 in the light-transmitting portion 105, thereby reducing the brightness difference between the first display area 102 and the second display area 103 of the display module 100, improving the uniformity of the image display, and enhancing the display effect of the display module 100.

[0061] In some embodiments, along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, the minimum spacing between the first type of light source sub-parts 110 is greater than or equal to 1 mm and less than or equal to 2 mm. For example, it can be 1.24 mm, 1.25 mm, 1.26 mm, 1.3 mm, 1.32 mm, 1.35 mm, 1.36 mm, 1.4 mm, 1.42 mm, 1.45 mm, 1.46 mm, 1.48 mm, 1.5 mm, 1.52 mm, 1.55 mm, 1.56 mm, 1.6 mm, 1.62 mm, 1.64 mm, 1.65 mm, 1.66 mm, 1.68 mm, 1.7 mm, 1.72 mm, 1.74 mm, 1.76 mm, 1.78 mm, 1.8 mm, 1.82 mm, 1.85 mm, 1.88 mm, 1.9 mm, 1.95 mm, 1.98 mm, etc.

[0062] In some embodiments, the control unit of the first type of light source sub-unit 110 is different from the control unit of the second type of light source sub-unit 111. The control units of the first type of light source sub-unit 110 and the second type of light source sub-unit 111 are respectively used to transmit control signals to the first type of light source sub-unit 110 and the second type of light source sub-unit 111 for turning on, off, and controlling the brightness of the first type of light source sub-unit 110 and the second type of light source sub-unit 111. By having different control units for the first type of light source sub-unit 110 and the second type of light source sub-unit 111, the first type of light source sub-unit 110 and the second type of light source sub-unit 111 are controlled respectively, thereby reducing the brightness difference between the first display area 102 and the second display area 103 of the display module 100, improving the uniformity of the image display, and enhancing the display effect of the display module 100.

[0063] In some embodiments, the light source 108 can be an LED (Light Emitting Diode) type light-emitting device, such as a Mini LED.

[0064] Please see Figures 1 to 5In some embodiments, the backlight assembly 104 further includes a driving layer 114, which is located on the side of the light source layer 106 away from the display panel 101. The control unit of the first type of light source sub-part 110 and the control unit of the second type of light source sub-part 111 are at least partially located on the driving layer 114. That is, the first type of light source sub-part 110 and the second type of light source sub-part 111 are respectively fixedly connected to the driving layer 114. When the light source part 108 is an LED-type light-emitting device, the driving layer 114 can be a lamp board, and the light source part 108 is fixed to the driving layer 114 on the side closer to the display panel 101 by processes such as welding.

[0065] In some embodiments, the light-emitting surface of the light source 108 is located on the side of the driving layer 114 closest to the display panel 101. Preferably, the height of the light source 108 is greater than or equal to the thickness of the filter 109, so as to avoid the filter 109 affecting the light emission of the light source 108.

[0066] In some embodiments, the thickness of the filter portion 109 is greater than or equal to 74 micrometers, and the thickness of the filter portion 109 is less than or equal to 94 micrometers. For example, it can be 77 micrometers, 79 micrometers, 82 micrometers, 84 micrometers, 85 micrometers, 89 micrometers, 90 micrometers, 92 micrometers, 93 micrometers, etc.

[0067] In some embodiments, the height of the light source portion 108 is greater than or equal to 0.5 mm, and the height of the light source portion 108 is less than or equal to 0.6 mm. For example, it can be 0.51 mm, 0.52 mm, 0.53 mm, 0.54 mm, 0.55 mm, 0.56 mm, 0.57 mm, 0.58 mm, 0.59 mm, etc.

[0068] In some embodiments, the filter portion 109 and the light source portion 108 are fixed on the same side of the driving layer 114.

[0069] In some embodiments, the side of the filter portion 109 in the first direction X is located between the first type of light source sub-portion 110 and the first light-transmitting sub-portion 107. That is, the side of the filter portion 109 in the first direction X is located on the side of the first type of light source group 112 closest to the first light-transmitting sub-portion 107. And / or, the side of the filter portion 109 in the second direction Y is located between the first type of light source sub-portion 110 and the first light-transmitting sub-portion 107. That is, the side of the filter portion 109 in the second direction Y is located on the side of the first type of light source group 112 closest to the first light-transmitting sub-portion 107.

[0070] Please see Figures 1 to 5 In some embodiments, the side of the filter portion 109 in the first direction X is located on the side of the first type of light source group 112 closest to the first light-transmitting sub-part 107 that is away from the first light-transmitting sub-part 107. When the light source portion 108 has one first type of light source group 112, the side of the filter portion 109 in the first direction X is located between the first type of light source group 112 and the second type of light source group 113; when the light source portion 108 has two first type of light source groups 112, the side of the filter portion 109 in the first direction X is located between two adjacent first type of light source groups 112. And / or, the side of the filter portion 109 in the second direction Y is located on the side of the first type of light source group 112 closest to the first light-transmitting sub-part 107 that is away from the first light-transmitting sub-part 107. When the light source unit 108 has one first type of light source group 112, the side of the filter unit 109 in the second direction Y is located between the first type of light source group 112 and the second type of light source group 113; when the light source unit 108 has two first type of light source groups 112, the side of the filter unit 109 in the second direction Y is located between two adjacent first type of light source groups 112.

[0071] In some embodiments, when the side of the filter portion 109 in the first direction X and / or the second direction Y is located on the side of the first type of light source group 112 closest to the first light-transmitting sub-portion 107 away from the first light-transmitting sub-portion 107, the light-shielding portion has an opening, and the first type of light source sub-portion 110 in the first type of light source group 112 closest to the first light-transmitting sub-portion 107 is located in the opening.

[0072] Please see Figures 1 to 5 In some embodiments, the light-transmitting portion 105 further includes a second light-transmitting sub-portion 115, which is located on the side of the light source layer 106 near the display panel 101. The orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101 lies within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101.

[0073] In some embodiments, when the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 may coincide with the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, or the area of ​​the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is smaller than the area of ​​the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101. Preferably, the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, and the area of ​​the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is smaller than the area of ​​the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101. By setting the second light-transmitting sub-part 115 with a larger orthographic projection area on the display panel 101, when the display module 100 is applied to a display device, it is beneficial for the infrared photosensitive sensor to receive infrared light.

[0074] Please see Figure 1 In some embodiments, when the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 coincides with the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101 is located within the orthographic projection of the filter part 109 on the display panel 101, and the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101 is located within the first display area 102.

[0075] In some embodiments, the maximum diameter of the first light-transmitting sub-part 107 in the first direction X and / or the second direction Y is greater than or equal to 6 mm, for example, it can be 6.2, 6.3, 6.5, 6.8, 7, etc., so that when the display module 100 is applied to a display device, the infrared photosensitive sensor can fully receive external signals.

[0076] In some embodiments, when the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 coincides with the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, the maximum diameter of the second light-transmitting sub-part 115 in the first direction X and / or the second direction Y is the same as the maximum diameter of the first light-transmitting sub-part 107 in the first direction X and / or the second direction Y.

[0077] Please see Figures 2 to 5In some embodiments, when the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, and the area of ​​the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is smaller than the area of ​​the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, the orthographic projection of the filter part 109 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, and the first display area 102 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101.

[0078] In some embodiments, the maximum diameter of the first display area 102 in the first direction X and / or the second direction Y is greater than or equal to 7 mm and less than or equal to 9 mm. For example, it can be 7.2 mm, 7.3 mm, 7.5 mm, 7.6 mm, 7.8 mm, 8 mm, 8.2 mm, 8.3 mm, 8.4 mm, 8.5 mm, 8.6 mm, 8.7 mm, 8.8 mm, etc.

[0079] In some embodiments, when the first display area 102 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, the maximum diameter of the second light-transmitting sub-part 115 in the first direction X and / or the second direction Y is greater than or equal to 7.5 mm and less than or equal to 12 mm. For example, it can be 7.6 mm, 7.8 mm, 8 mm, 8.2 mm, 8.3 mm, 8.4 mm, 8.5 mm, 8.6 mm, 8.7 mm, 8.8 mm, 9 mm, 9.2 mm, 9.5 mm, 10 mm, 10.2 mm, 10.5 mm, 10.8 mm, 11 mm, 11.2 mm, 11.4 mm, 11.5 mm, 11.7 mm, 11.8 mm, etc.

[0080] In some embodiments, when the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, and the area of ​​the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 is smaller than the area of ​​the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101, a portion of the orthographic projection of the light source part 108 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101.

[0081] In some embodiments, the orthographic projection of the first type of light source group 112, which is closest to the first light-transmitting sub-part 107 in the first direction X and / or the second direction Y, onto the display panel 101 is located within the orthographic projection of the second light-transmitting sub-part 115 onto the display panel 101. This is beneficial for increasing the amount of light emitted by the light source 108 to the first display area 102 of the display panel 101, thereby reducing the brightness difference between the first display area 102 and the second display area 103 of the display module 100, improving the uniformity of the image display, and enhancing the display effect of the display module 100.

[0082] In some embodiments, the orthographic projection of the first type of light source group 112, which is second closest to the first light-transmitting sub-part 107 in the first direction X and / or the second direction Y, onto the display panel 101 is at least partially located within the orthographic projection of the second light-transmitting sub-part 115 onto the display panel 101. This is beneficial for further increasing the amount of light emitted by the light source 108 to the first display area 102 of the display panel 101, thereby reducing the brightness difference between the first display area 102 and the second display area 103 of the display module 100, improving the uniformity of the image display, and enhancing the display effect of the display module 100.

[0083] Please see Figures 3 to 4 In some embodiments, the display module 100 further includes a lens component 116, the orthographic projection of which on the display panel 101 lies within the orthographic projection of the second light-transmitting sub-part 115 on the display panel 101. The lens component 116 includes at least one curved surface that protrudes toward the display panel 101. The lens component 116 helps to deflect the light emitted from the first type of light source sub-part 110 surrounding the first light-transmitting sub-part 107 to the area covered by the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101, thereby further reducing the brightness difference between the first display area 102 and the second display area 103 of the display module 100, improving image uniformity, and enhancing the display effect of the display module 100.

[0084] In some embodiments, the lens member 116 is disposed in a one-to-one correspondence with the light source portion 108 whose orthogonal projection on the display panel 101 is located within the orthogonal projection of the second light-transmitting sub-part 115 on the display panel 101. See also... Figure 8 and Figure 9By having the lens member 116 corresponding one-to-one with the first type of light source sub-part 110 in the first type of light source group 112 that is closest to the first light-transmitting sub-part 107 in the first direction X and / or the second direction Y, the light emission angle of the first light-transmitting sub-part 107 is significantly changed, so that more light is deflected to the area covered by the orthogonal projection of the first light-transmitting sub-part 107 on the display panel 101.

[0085] In some embodiments, at least one of the lens members 116 is disposed around the first light-transmitting sub-part 107. That is, the lens member 116 disposed corresponding to the first type of light source sub-part 110 in the first type of light source group 112 closest to the first light-transmitting sub-part 107 in the first direction X and / or the second direction Y is integrally disposed around the first light-transmitting sub-part 107.

[0086] Please see Figure 4 In some embodiments, the backlight assembly 104 further includes a dispensing portion 117, which corresponds to and covers the light source portion 108. The dispensing portion 117 includes a first dispensing sub-portion 118, the orthographic projection of which onto the display panel 101 lies within the orthographic projection of the second light-transmitting sub-portion 115 onto the display panel 101. The first dispensing portion 118 is integrally formed with the lens member 116. By controlling the first dispensing portion 118 to protrude towards the display panel 101 from the side facing it, the first dispensing portion 118 simultaneously functions as the lens member 116. This simplifies the manufacturing process and reduces the manufacturing cost of the display module 100 while allowing more light to be deflected into the area covered by the orthographic projection of the first light-transmitting sub-portion 107 onto the display panel 101.

[0087] In some embodiments, the dispensing portion 117 further includes a second dispensing portion, the second dispensing portion having its orthographic projection on the display panel 101 at least partially outside the orthographic projection of the second light-transmitting portion 115 on the display panel 101. That is, the second dispensing portion covers the second type of light source portion 111 and the first type of light source portion 110 whose orthographic projection on the display panel 101 is partially located within the orthographic projection of the second light-transmitting portion 115 on the display panel 101. By adjusting the thickness of the first dispensing portion 118 and the curvature of the first dispensing portion 118 protruding towards the display panel 101 from the side near the display panel 101, it is beneficial to adjust the amount of light deflected from the first type of light source portion 110 covered by the first dispensing portion 118 to the area covered by the orthographic projection of the first light-transmitting portion 107 on the display panel 101. Preferably, the thickness of the first dispensing portion 118 is greater than or equal to the thickness of the second dispensing portion.

[0088] Please see Figures 1 to 5 In some embodiments, the backlight assembly 104 further includes a backplate 119 located on the side of the light source layer 106 away from the display panel 101, and the first light-transmitting sub-part 107 penetrates at least through the backplate 119. When the backlight assembly 104 also includes the driving layer 114, the first light-transmitting sub-part 107 also penetrates the driving layer 114. The backlight assembly 104 further includes a first adhesive layer 120 located between the backplate 119 and the driving layer 114, the first adhesive layer 120 may have a thermally conductive function, and the first light-transmitting sub-part 107 also penetrates the first adhesive layer 120. That is, the first light-transmitting sub-part 107 is formed by openings in all film layers on the side of the light source layer 106 away from the display panel 101.

[0089] Please see Figures 1 to 5 In some embodiments, the backlight assembly 104 further includes at least one optical film layer 121 located between the light source layer 106 and the display panel 101, with the second light-transmitting sub-part 115 penetrating through the optical film layer 121. The optical film layer 121 can be one of a diffusion film layer, a brightness enhancement film layer, or a beam-splitting film layer; alternatively, when the backlight assembly 104 includes multiple optical film layers 121, each optical film layer 121 can be a diffusion film layer, a brightness enhancement film layer, or a beam-splitting film layer. The diffusion film layer is used to diffuse the light from the light source 108 to make the light emitted from the diffusion film layer more uniform. The brightness enhancement film layer is used to improve the utilization rate of the light emitted by the light source 108 by the backlight assembly 104. The beam-splitting film layer is used to converge the light incident on the beam-splitting film layer to improve the front brightness.

[0090] In some embodiments, the total thickness of the optical film layer 121 in the backlight assembly 104 is greater than or equal to 0.7 mm and less than or equal to 0.8 mm, for example, it can be 0.72 mm, 0.73 mm, 0.75 mm, 0.76 mm, 0.78 mm, etc.

[0091] Please see Figures 1 to 5 In some embodiments, the backlight assembly 104 further includes a haze adjustment layer 122 located between the optical film layer 121 and the display panel 101, the haze adjustment layer 122 being switchable between a hazy state and a transparent state depending on the usage scenario.

[0092] In some embodiments, the thickness of the haze adjustment layer 122 is greater than or equal to 0.2 mm and less than or equal to 0.4 mm, for example, it can be 0.22 mm, 0.24 mm, 0.25 mm, 0.28 mm, 0.3 mm, 0.32 mm, 0.33 mm, 0.35 mm, 0.38 mm, etc.

[0093] Please see Figures 2 to 5 In some embodiments, the backlight assembly 104 further includes a privacy layer 123 located between the optical film layer 121 and the haze adjustment layer 122, and the second light-transmitting sub-portion 115 extends through the privacy layer 123. When the haze adjustment layer 122 is present, the second light-transmitting sub-portion 115 is formed by all the film layer openings between the light source layer 106 and the haze adjustment layer 122 in the backlight assembly 104. When the haze adjustment layer 122 is absent, the second light-transmitting sub-portion 115 is formed by all the film layer openings in the backlight assembly 104 located on the side of the light source layer 106 near the display panel 101.

[0094] In some embodiments, the thickness of the privacy layer 123 is greater than or equal to 0.3 mm and less than or equal to 0.5 mm, for example, it can be 0.32 mm, 0.33 mm, 0.35 mm, 0.37 mm, 0.4 mm, 0.42 mm, 0.45 mm, 0.46 mm, 0.48 mm, etc.

[0095] Please see Figure 5 In some embodiments, the second light-transmitting sub-part 115 may include a first light-transmitting hole 124 penetrating the optical film layer 121 and a second light-transmitting hole 125 penetrating the privacy layer 123, wherein the first light-transmitting hole 124 is connected to the second light-transmitting hole 125.

[0096] In some embodiments, the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101 lies within the orthographic projection of the first light-transmitting hole 124 on the display panel 101, and the orthographic projection of the first light-transmitting hole 124 on the display panel 101 lies within the orthographic projection of the second light-transmitting hole 125 on the display panel 101. See also... Figure 5 When the diameters of the first light-transmitting sub-part 107 and the first light-transmitting hole 124 are both 6 mm, and the diameter of the second light-transmitting hole 125 is 11 mm; along the direction from the first type of light source sub-part 110 to the second type of light source sub-part 111, when the minimum distance between the first type of light source sub-part 110 and the second type of light source sub-part 111 is 2.5 mm, the minimum distance between the second type of light source sub-part 111 is 3 mm, and the minimum distance between the first type of light source sub-part 110 is 1.66 mm, the display brightness distribution and viewing angle brightness distribution of the display module 100 are obtained by the spatial brightness receiver and the angular brightness receiver, respectively, and the brightness uniformity results of both reach 85% (e.g., Figure 10 and Figure 11 (As shown).

[0097] Please see Figures 1 to 4 In some embodiments, the display panel 101 includes an array substrate 126, a color filter substrate 127 disposed opposite to the array substrate 126, and a liquid crystal layer located between the array substrate 126 and the color filter substrate 127. The color filter substrate 127 may be located on the side of the array substrate 126 away from the backlight assembly 104, or the color filter substrate 127 may be located between the array substrate 126 and the backlight assembly 104.

[0098] In some embodiments, the display panel 101 includes a plurality of pixels, and the pixel density in the first display area 102 is less than the pixel density in the second display area 103, so that when the display module 100 is applied to a display device, the infrared light sensor can obtain sufficient signals while displaying. The first display area 102 and the second display area 103 of the display panel 101 have a plurality of pixel sub-regions, and the array substrate 126, the color filter substrate 127 and the liquid crystal layer corresponding to one pixel sub-region constitute one pixel.

[0099] Please see Figures 1 to 4 In some embodiments, the display module 100 further includes a first polarizer 128 and a second polarizer 129, wherein the first polarizer 128 is located between the display panel 101 and the backlight assembly 104, and the second polarizer 129 is located on the side of the display panel 101 away from the backlight assembly 104.

[0100] The display module 100 provided in this embodiment of the invention, by providing a filter 109 in the backlight assembly 104, the orthographic projection of the filter 109 on the display panel 101 covers the orthographic projection of the first light-transmitting sub-part 107 on the display panel 101, and the filter 109 has a reflectivity of visible light greater than or equal to 90% and a transmittance of infrared light greater than or equal to 80%, when the display module 100 is applied to a display device, without affecting the infrared light received by the infrared photosensitive sensor, increases the amount of light emitted by the light source 108 in the light-transmitting part 105, thereby improving the uniformity of the image display between the first display area 102 and the second display area 103 of the display module 100 and improving the display effect.

[0101] Please see Figure 12 and Figure 13 The present invention also provides a display device 10, including a display module 100 as described above, and an infrared photosensitive sensor 200. The infrared photosensitive sensor 200 is disposed corresponding to the light-transmitting portion 105 and is located on the side of the backlight assembly 104 of the display module 100 away from the display panel 101.

[0102] For the specific structure of the display module 100, please refer to any of the above-mentioned display module embodiments and accompanying drawings, which will not be repeated here.

[0103] In some embodiments, the display device 10 can be applied to vehicle display, enabling functions such as seat belt monitoring, fatigue monitoring, and distraction monitoring for the driver.

[0104] This invention discloses a display module and a display device. The display module includes a display panel and a backlight assembly. The backlight assembly includes a light-transmitting portion having a first light-transmitting sub-part and a light source layer having a light source portion and a filter portion. The orthographic projection of the first light-transmitting sub-part on the display panel is located within the orthographic projection of the filter portion on the display panel. The filter portion has a reflectivity of visible light greater than or equal to 90% and a transmittance of infrared light greater than or equal to 80%. By setting the filter portion, the filter portion covers the first light-transmitting sub-part, and the filter portion reflects visible light and transmits infrared light. When the display module is applied to the display device, the display panel does not affect the infrared photosensitive sensor's reception of infrared light while displaying the screen normally. It also increases the light output of the light source portion in the light-transmitting portion, thereby improving the uniformity of the screen display between the first display area and the second display area of ​​the display module and enhancing the display effect.

[0105] The above provides a detailed description of a display module and display device provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display module, characterized in that, The display module includes a first display area and a second display area surrounding the first display area. Display panel; A backlight assembly, located on one side of the display panel, includes a light-transmitting portion located within the first display area; The backlight assembly includes a light source layer, and the light-transmitting part includes a first light-transmitting sub-part. The first light-transmitting sub-part is located on the side of the light source layer away from the display panel. The light source layer includes a light source part and a filter part. The orthographic projection of the first light-transmitting sub-part on the display panel is located within the orthographic projection of the filter part on the display panel. The filter element has a reflectivity of 90% or higher for visible light and a transmittance of 80% or higher for infrared light. The light source unit includes a plurality of first-type light source sub-units and a plurality of second-type light source sub-units. In a first plane parallel to the light-emitting surface of the display panel, the first-type light source sub-units are arranged around the first light-transmitting sub-unit, and the second-type light source sub-units are located on the side of the first-type light source sub-units away from the light-transmitting sub-unit. At least a portion of the first-type light source sub-units are located within the first display area. The minimum distance between the first-type light source sub-units and the second-type light source sub-units is less than the minimum distance between the second-type light source sub-units, and the height of the light source unit is greater than or equal to the thickness of the filter unit. The light source section includes at least one first type of light source group and multiple second type of light source groups. Each ring of multiple first type of light source sub-sections surrounding the first light-transmitting sub-section belongs to one first type of light source group, and each ring of multiple second type of light source sub-sections surrounding the first light-transmitting sub-section belongs to one second type of light source group. The filter section has an opening, and the first type of light source sub-section in the first type of light source group closest to the first light-transmitting sub-section is located in the opening. The light-transmitting portion further includes a second light-transmitting sub-portion, which is located on the side of the light source layer closer to the display panel; the orthographic projection of the first light-transmitting sub-portion on the display panel is located within the orthographic projection of the second light-transmitting sub-portion on the display panel, and the orthographic projection area of ​​the first light-transmitting sub-portion on the display panel is smaller than the orthographic projection area of ​​the second light-transmitting sub-portion on the display panel; the orthographic projection of the filter portion on the display panel is located within the orthographic projection of the second light-transmitting sub-portion on the display panel; the orthographic projection of the first type of light source group closest to the first light-transmitting sub-portion on the display panel is located within the orthographic projection of the second light-transmitting sub-portion on the display panel.

2. The display module according to claim 1, characterized in that, Along the direction from the center of the first display area to the surrounding area, the minimum spacing between the first type of light source sub-units is less than the minimum spacing between the first type of light source sub-units and the second type of light source sub-units.

3. The display module according to claim 1, characterized in that, The control unit of the first type of light source sub-unit is different from the control unit of the second type of light source sub-unit.

4. The display module according to claim 1, characterized in that, The display module further includes a lens component, the orthographic projection of which is located within the orthographic projection of the second light-transmitting sub-part on the display panel, and the lens component includes at least one arc surface that protrudes toward the display panel.

5. The display module according to claim 4, characterized in that, The backlight assembly further includes an adhesive dispensing section, which covers the light source section one by one. The adhesive dispensing section includes a first adhesive dispensing sub-section, the orthographic projection of the first adhesive dispensing sub-section on the display panel is located within the orthographic projection of the second light-transmitting sub-section on the display panel, and the first adhesive dispensing sub-section is integrally disposed with the lens component.

6. The display module according to claim 1, characterized in that, The backlight assembly also includes a back plate located on the side of the light source layer away from the display panel, and the first light-transmitting sub-part penetrates at least through the back plate; The backlight assembly further includes at least one optical film layer located between the light source layer and the display panel, wherein the second light-transmitting sub-part penetrates the optical film layer.

7. A display device, characterized in that, The display module includes any one of claims 1 to 6, and an infrared photosensitive sensor, wherein the infrared photosensitive sensor is disposed corresponding to the light-transmitting portion and is located on the side of the backlight assembly of the display module away from the display panel.

Images