CN118210171A - Display module and display device - Google Patents

Abstract

The embodiment of the present 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-portion and a light source layer having a light source portion and a filter portion, the orthographic projection of the first light-transmitting sub-portion on the display panel is located within the orthographic projection of the filter portion on the display panel, the reflectivity of the filter portion to visible light is greater than or equal to 90%, and the transmittance of infrared light is greater than or equal to 80%. The present invention arranges the filter portion so that the filter portion covers the first light-transmitting sub-portion, 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 light receiving of the infrared photosensitive sensor when displaying a picture normally, and the light output of the light source portion in the light-transmitting portion is increased, thereby improving the picture display uniformity of the first display area and the second display area of the display module and improving the display effect.

Description

Display module and display device

Technical Field

The present invention relates to the field of display, and in particular to a display module and a display device.

Background technique

With the development of liquid crystal display technology, especially the development of full-screen technology, under-screen camera technology has been widely used. For example, under-screen camera technology is used in vehicle-mounted display devices, and can monitor the driver's seat belt, fatigue, distraction, etc. through infrared sensors. Under-screen camera technology sets the camera on the backlight side of the display panel without destroying the integrity of the display panel, and divides the display area of the display panel into a conventional display area and a camera area. When the camera is turned off, the camera area also participates in the picture display, thereby achieving full-screen display. In the existing display modules that use under-screen camera technology, since the backlight component of the display module needs to have a larger hole to ensure the imaging effect of the camera, there is no light source in the hole area, resulting in a dark display screen or even no display screen in the camera area of the display panel, and the display effect is affected.

Therefore, a display module and a display device are urgently needed to solve the above technical problems.

Summary of the invention

The present invention provides a display module and a display device, which can alleviate the current technical problem that the display effect of the display module is affected due to the opening of the backlight assembly of the display module.

The present invention provides a display module having a first display area and a second display area surrounding the first display area, the display module comprising:

Display panel;

A backlight assembly, located at one side of the display panel, comprising a light-transmitting portion located in the first display area;

The backlight assembly includes a light source layer, the light-transmitting portion includes a first light-transmitting sub-portion, the first light-transmitting sub-portion is located at a side of the light source layer away from the display panel, the light source layer includes a light source portion and a filter portion, and an orthographic projection of the first light-transmitting sub-portion on the display panel is located within an orthographic projection of the filter portion on the display panel;

The reflectivity of the filter part to visible light is greater than or equal to 90%, and the transmittance of the filter part to infrared light is greater than or equal to 80%.

In some embodiments, the light source section includes a plurality of first-type light source sub-sections and a plurality of second-type light source sub-sections, the first-type light source sub-sections are arranged around the first light-transmitting sub-section, and the second-type light source sub-sections are located on a side of the first-type light source sub-section away from the light-transmitting section;

The minimum spacing between the first-type light source sub-units and the second-type light source sub-units is smaller than the minimum spacing between the second-type light source sub-units.

In some embodiments, along the direction from the center to the periphery of the first display area, the minimum spacing between the first type of light source sub-sections is smaller than the minimum spacing between the first type of light source sub-sections and the second type of light source sub-sections.

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.

In some embodiments, the light-transmitting portion further includes a second light-transmitting sub-portion, and the second light-transmitting sub-portion is located on a side of the light source layer close 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.

In some embodiments, the orthographic projection of the light filtering 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 a portion of the light source portion on the display panel is located within the orthographic projection of the second light-transmitting sub-portion on the display panel.

In some embodiments, the display module further includes a lens component, the orthographic projection of the lens component on the display panel is located within the orthographic projection of the second light-transmitting sub-portion on the display panel, and the lens component includes at least one curved surface that protrudes toward the display panel.

In some embodiments, the backlight assembly also includes a glue dispensing portion, which covers the light source portion one by one, and the glue dispensing portion includes a first glue dispensing sub-portion, the orthographic projection of the first glue dispensing 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 first glue dispensing sub-portion is integrally arranged with the lens component.

In some embodiments, the backlight assembly further comprises a back plate located on a side of the light source layer away from the display panel, and the first light-transmitting sub-portion at least penetrates the back plate;

The backlight assembly further includes at least one optical film material layer located between the light source layer and the display panel, and the second light-transmitting sub-portion penetrates the optical film material layer.

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

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

The present invention sets a filter portion, the filter portion covers the first light-transmitting sub-portion, and the filter portion reflects visible light and transmits infrared light. When the display module is applied to a display device, the display panel does not affect the infrared light sensor's reception of infrared light when displaying a picture normally, and increases the light output of the light source portion in the light-transmitting portion, thereby improving the picture display uniformity of the first display area and the second display area of the display module and improving the display effect.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the 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 work.

FIG1 is a schematic diagram of a first structure of a display module provided by an embodiment of the present invention;

FIG2 is a schematic diagram of a second structure of a display module provided by an embodiment of the present invention;

FIG3 is a schematic diagram of a third structure of a display module provided by an embodiment of the present invention;

FIG4 is a schematic diagram of a fourth structure of a display module provided by an embodiment of the present invention;

5 is a schematic structural diagram of a backlight assembly of a display module provided in an embodiment of the present invention;

6 is a schematic structural diagram of a light source portion of a display module provided in an embodiment of the present invention;

FIG. 7 is a diagram showing the light transmittance of a display module using NSR material for a filter portion provided by an embodiment of the present invention;

FIG8 is a schematic diagram of the light emitting range of a part of the first light source sub-unit when the structure of the display module shown in FIG2 is displayed;

FIG9 is a schematic diagram of the light emitting range of a part of the first light source sub-unit when the structure of the display module shown in FIG3 is displayed;

FIG10 is a diagram showing the spatial brightness distribution result of the backlight assembly shown in FIG5 ;

FIG11 is a diagram showing the viewing angle brightness distribution result of the backlight assembly shown in FIG5;

12 is a schematic diagram of a first structure of a display device provided by an embodiment of the present invention;

FIG. 13 is a schematic diagram of a second structure of a display device provided in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the drawings; while "inside" and "outside" refer to the outline of the device.

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

Referring to FIG. 1 to FIG. 6 , an embodiment of the present 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:

Display panel 101;

A backlight assembly 104 , located at one side of the display panel 101 , including a light-transmitting portion 105 located in the first display area 102 ;

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

The reflectivity of the filter part 109 to visible light is greater than or equal to 90%, and the transmittance of the filter part 109 to infrared light is greater than or equal to 80%.

In the embodiment of the present invention, a filter portion 109 is set in the backlight assembly 104, and the filter portion 109 covers the first light-transmitting sub-portion 107. The filter portion 109 reflects visible light and transmits infrared light. When the display module 100 is applied to a display device, the display panel 101 does not affect the infrared light sensor's reception of infrared light when displaying a picture normally, and increases the light output of the light source portion 108 in the light-transmitting portion 105, thereby improving the picture display uniformity of the first display area 102 and the second display area 103 of the display module 100 and improving the display effect.

The technical solution of the present invention is now described in conjunction with specific embodiments.

In this embodiment, the reflectivity of the filter unit 109 to visible light is greater than or equal to 90%, and the transmittance of the filter unit 109 to infrared light is greater than or equal to 80%. Visible light is a light wave with a wavelength in the range of 400 nanometers to 760 nanometers; the wavelength of infrared light is greater than 760 nanometers. The reflectivity of the filter unit 109 to visible light can be 91%, 92%, 93%, 95%, 96%, 97%, 99%, 100%, etc., and the transmittance of the filter unit 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 109, it is beneficial to reflect the light from the light source 108 into the light-transmitting portion 105 through the filter 109, thereby increasing the light output of the light source 108 in the light-transmitting portion 105, improving the uniformity of the picture 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 109, when the display module 100 is applied to a display device, interference with the reception of infrared light by the infrared light sensor correspondingly arranged in the light-transmitting portion 105 is avoided.

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

In some embodiments, the filter 109 may be made of commercial film materials, such as near infrared transmission system-reflector film (NSR), etc. Referring to FIG7 , after the filter 109 is formed of commercial near infrared transmission system-reflector film, the transmittance of infrared light is greater than or equal to 84%, and the transmittance of visible light is less than or equal to 1%, that is, the reflectance of visible light is greater than or equal to 99%.

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

Please refer to FIG. 6 , in some embodiments, in a first plane, a plurality of the first-type light source sub-sections 110 are distributed in a ring shape along the direction surrounding the first light-transmitting sub-section 107, and the first plane is a plane parallel to the light-emitting surface of the display panel 101. The plurality of the first-type light source sub-sections 110 are distributed in a ring shape along the direction surrounding the first light-transmitting sub-section 107, that is, the light source section 108 includes at least one first-type light source group 112, and each circle of the plurality of the first-type light source sub-sections 110 arranged around the first light-transmitting sub-section 107 belongs to the same first-type light source group 112. In a second plane, the second plane is perpendicular to the first plane, and the number of the first-type light source sub-sections 110 spaced between the first-type light source sub-sections 110 and the first light-transmitting sub-section 107 in the same first-type light source group 112 is the same. For example, the number of the first-type light source sub-sections 110 spaced between the first-type light source sub-section 110 and the first light-transmitting sub-section 107 in the first-type light source group 112 that is closest to the first light-transmitting sub-section 107 (i.e., the first-type light source group 112 formed by the first-type light source sub-sections 110 in the first circle surrounding the first light-transmitting sub-section 107) is 0; the number of the first-type light source sub-sections 110 spaced between the first-type light source sub-section 110 and the first light-transmitting sub-section 107 in the first-type light source group 112 that is second closest to the first light-transmitting sub-section 107 (i.e., the first-type light source group 112 formed by the second circle of the first-type light source sub-sections 110 surrounding the first light-transmitting sub-section 107) is 1.

In some embodiments, in the first plane, a plurality of the first-type light source sub-units 110 are distributed in an array along a first direction X and a second direction Y, and the first direction X is perpendicular to the second direction Y. It can be understood that "perpendicular" in the present invention refers to perpendicularity within a certain angle error range, for example, 85° to 95° can be interpreted as perpendicularity.

In some embodiments, in the first plane, a plurality of the second-type light source sub-sections 111 are distributed in a ring shape along the direction surrounding the first light-transmitting sub-section 107. The plurality of the second-type light source sub-sections 111 are distributed in a ring shape along the direction surrounding the first light-transmitting sub-section 107, that is, the light source section 108 includes a plurality of second-type light source groups 113, and each circle of the plurality of the second-type light source sub-sections 111 arranged around the first light-transmitting sub-section 107 belongs to the same second-type light source group 113. In the second plane, the number of the first-type light source sub-sections 110 and the number of the second-type light source sub-sections 111 spaced between the second-type light source sub-sections 111 and the first light-transmitting sub-section 107 in the same second-type light source group 113 are the same. For example, when the number of the first-type light source groups 112 is 1, the number of the first-type light source sub-sections 110 spaced between the second-type light source sub-section 111 and the first light-transmitting sub-section 107 in the second-type light source group 113 closest to the first light-transmitting sub-section 107 (i.e., the second-type light source group 113 formed by the second-type light source sub-sections 111 in the first circle surrounding the first light-transmitting sub-section 107) is 1; the number of the first-type light source sub-sections 110 spaced between the second-type light source sub-section 111 and the first light-transmitting sub-section 107 in the second-type light source group 113 second closest to the first light-transmitting sub-section 107 (i.e., the second-type light source group 113 formed by the second-type light source sub-sections 111 in the second circle surrounding the first light-transmitting sub-section 107) is 1, and the number of the second-type light source sub-sections 111 is 1.

Please refer to FIG. 6 . In some embodiments, within a first plane, a plurality of the second-type light source sub-divisions 111 are distributed in an array along a first direction X and a second direction Y. The first direction X is perpendicular to the second direction Y.

In some embodiments, along the direction from the center to the periphery of the first display area 102, the minimum spacing between the first-type light source sub-sections 110 is smaller than the minimum spacing between the first-type light source sub-sections 110 and the second-type light source sub-sections 111. That is, along the direction from the first-type light source sub-sections 110 to the second-type light source sub-sections 111, the minimum spacing between the first-type light source sub-sections 110 and the second-type light source sub-sections 111 is smaller than the minimum spacing between the second-type light source sub-sections 111. For example, in the first direction X, the minimum spacing between the first-type light source sub-sections 110 and the second-type light source sub-sections 111 that are closest to the first-type light source sub-sections 110 is the minimum spacing between the first-type light source sub-sections 110 and the second-type light source sub-sections 111; in the first direction X, the minimum spacing between the second-type light source sub-sections 111 is the minimum spacing between the second-type light source sub-sections 111. Alternatively, in the second direction Y, the smallest distance between the plurality of first-type light source sub-units 110 in the same group and the second-type light source sub-unit 111 closest to the first-type light source sub-unit 110 is the smallest spacing between the first-type light source sub-unit 110 and the second-type light source sub-unit 111; in the second direction Y, the smallest spacing between a plurality of adjacent second-type light source sub-units 111 is the smallest spacing between the second-type light source sub-units 111. The above spacing setting is conducive to increasing the density of the light source unit 108 close to the light-transmitting portion 105, increasing the light output of the light source unit 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 picture display, and enhancing the display effect of the display module 100.

In some embodiments, along the direction from the first type of light source sub-unit 110 to the second type of light source sub-unit 111, the ratio of the minimum spacing between the first type of light source sub-unit 110 and the second type of light source sub-unit 111 to the minimum spacing between the second type of light source sub-unit 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 conducive to the reasonable arrangement of the light source unit 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 picture display, and enhancing the display effect of the display module 100.

In some embodiments, along the direction from the first type of light source sub-section 110 to the second type of light source sub-section 111, the minimum spacing between the first type of light source sub-section 110 and the second type of light source sub-section 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.

In some embodiments, along the direction from the first type of light source sub-section 110 to the second type of light source sub-section 111, the minimum spacing between the second type of light source sub-sections 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.

In some embodiments, along the direction from the first type of light source sub-section 110 to the second type of light source sub-section 111, the minimum spacing between the first type of light source sub-section 110 is smaller than the minimum spacing between the first type of light source sub-section 110 and the second type of light source sub-section 111. Specifically, along the direction from the first type of light source sub-section 110 to the second type of light source sub-section 111, the minimum spacing between the first type of light source sub-sections 110 is the minimum spacing between the first type of light source sub-sections 110; along the direction from the first type of light source sub-section 110 to the second type of light source sub-section 111, the minimum spacing between multiple adjacent second type of light source sub-sections 111 is the minimum spacing between the second type of light source sub-sections 111. The above spacing setting is conducive to increasing the density of the light source section 108 close to the light-transmitting section 105, increasing the light output of the light source section 108 in the light-transmitting section 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 picture display, and enhancing the display effect of the display module 100.

In some embodiments, along the direction from the first type of light source sub-section 110 to the second type of light source sub-section 111, the minimum spacing between the first type of light source sub-sections 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.

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 unit of the first type of light source sub-unit 110 and the control unit of 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, which are used to turn on, turn off and control the brightness of the first type of light source sub-unit 110 and the second type of light source sub-unit 111. By making the control unit of the first type of light source sub-unit 110 different from the control unit of 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 respectively controlled to achieve the difference between the luminous brightness of the first type of light source sub-unit 110 and the luminous brightness of the second type of light source sub-unit 111, 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 picture display, and enhancing the display effect of the display module 100.

In some embodiments, the light source unit 108 may be a LED (Light Emitting Diode) type light emitting device, such as a Mini LED (mini light emitting diode) or the like.

Referring to FIGS. 1 to 5 , in some embodiments, the backlight assembly 104 further includes a driving layer 114, the driving layer 114 is located on a side of the light source layer 106 away from the display panel 101, and the control unit of the first type of light source sub-unit 110 and the control unit of the second type of light source sub-unit 111 are at least partially located on the driving layer 114. That is, the first type of light source sub-unit 110 and the second type of light source sub-unit 111 are respectively fixedly connected to the driving layer 114. When the light source unit 108 is an LED-type light-emitting device, the driving layer 114 can be a lamp board, and the light source unit 108 is fixed to a side of the driving layer 114 close to the display panel 101 by welding or other processes.

In some embodiments, the light emitting surface of the light source unit 108 is located on a side of the driving layer 114 close to the display panel 101. Preferably, the height of the light source unit 108 is greater than or equal to the thickness of the filter unit 109, so as to prevent the filter unit 109 from affecting the light emitting of the light source unit 108.

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

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.

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

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

Referring to FIGS. 1 to 5 , in some embodiments, the side surface of the filter section 109 in the first direction X is located on a side of the first type light source group 112 closest to the first light-transmitting sub-section 107 and away from the first light-transmitting sub-section 107. When the light source section 108 has one first type light source group 112, the side surface of the filter section 109 in the first direction X is located between the first type light source group 112 and the second type light source group 113; when the light source section 108 has two first type light source groups 112, the side surface of the filter section 109 in the first direction X is located between two adjacent first type light source groups 112. And/or, the side surface of the filter section 109 in the second direction Y is located on a side of the first type light source group 112 closest to the first light-transmitting sub-section 107 and away from the first light-transmitting sub-section 107. When the light source unit 108 has one first-type light source group 112, the side surface of the filter unit 109 in the second direction Y is located between the first-type light source group 112 and the second-type light source group 113; when the light source unit 108 has two first-type light source groups 112, the side surface of the filter unit 109 in the second direction Y is located between two adjacent first-type light source groups 112.

In some embodiments, when the side surface of the filtering portion 109 in the first direction X and/or the second direction Y is located on a side of the first type of light source group 112 closest to the first light-transmitting sub-portion 107 and away from the first light-transmitting sub-portion 107, the shading 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.

1 to 5 , in some embodiments, the light-transmitting portion 105 further includes a second light-transmitting sub-portion 115, and the second light-transmitting sub-portion 115 is located on a side of the light source layer 106 close to the display panel 101. The orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101.

In some embodiments, when the orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101, the orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101 may coincide with the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101, or the orthographic projection area of the first light-transmitting sub-portion 107 on the display panel 101 is smaller than the orthographic projection area of the second light-transmitting sub-portion 115 on the display panel 101. Preferably, the orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101, and the orthographic projection area of the first light-transmitting sub-portion 107 on the display panel 101 is smaller than the orthographic projection area of the second light-transmitting sub-portion 115 on the display panel 101. By providing the second light-transmitting sub-portion 115 having 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 light sensor to receive infrared light.

Please refer to Figure 1. In some embodiments, when the orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101 can coincide with the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101, the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101 is located within the orthographic projection of the filter portion 109 on the display panel 101, and the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101 is located within the first display area 102.

In some embodiments, the maximum diameter of the first light-transmitting sub-portion 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 photosensor can fully receive external signals.

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

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

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, may 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.

In some embodiments, when the first display area 102 is located within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101, the maximum diameter of the second light-transmitting sub-portion 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.

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

In some embodiments, the orthographic projection of the first type of light source group 112 closest to the first light-transmitting sub-section 107 in the first direction X and/or the second direction Y on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-section 115 on the display panel 101, which is beneficial to increase the amount of light provided by the light source section 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 picture display, and enhancing the display effect of the display module 100.

In some embodiments, the orthographic projection of the first type of light source group 112, which is the second closest to the first light-transmitting sub-section 107 in the first direction X and/or the second direction Y, on the display panel 101 is at least partially located within the orthographic projection of the second light-transmitting sub-section 115 on the display panel 101, which is beneficial to further increase the amount of light provided by the light source section 108 for 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 picture display, and enhancing the display effect of the display module 100.

Referring to FIG. 3 and FIG. 4, in some embodiments, the display module 100 further includes a lens component 116, the orthographic projection of the lens component 116 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101, and the lens component 116 includes at least one curved surface, and the curved surface protrudes toward the display panel 101. The arrangement of the lens component 116 is conducive to deflecting the light emitted by the first type of light source sub-portion 110 arranged around the first light-transmitting sub-portion 107 to the area covered by the orthographic projection of the first light-transmitting sub-portion 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 the uniformity of picture display, and enhancing the display effect of the display module 100.

In some embodiments, the lens member 116 is disposed in one-to-one correspondence with the light source portion 108 whose orthographic projection on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101. Referring to FIG8 and FIG9, by disposing the lens member 116 in one-to-one correspondence with the first-type light source sub-portion 110 in the first-type light source group 112 closest to the first light-transmitting sub-portion 107 in the first direction X and/or the second direction Y, the light emitting angle of the first light-transmitting sub-portion 107 is significantly changed, so that more light is deflected to the area covered by the orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101.

In some embodiments, at least one lens component 116 is disposed around the first light-transmitting sub-portion 107. That is, at least the lens component 116 disposed corresponding to 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 in the first direction X and/or the second direction Y is disposed integrally around the first light-transmitting sub-portion 107.

Please refer to FIG. 4 . In some embodiments, the backlight assembly 104 further includes a glue dispensing portion 117. The glue dispensing portion 117 covers the light source portion 108 in a one-to-one correspondence. The glue dispensing portion 117 includes a first glue dispensing sub-portion 118. The orthographic projection of the first glue dispensing sub-portion 118 on the display panel 101 is located within the orthographic projection of the second light-transmitting sub-portion 115 on the display panel 101. The first glue dispensing sub-portion 118 is integrally provided with the lens member 116. By controlling the first glue dispensing sub-portion 118 to protrude toward the display panel 101 on one side of the display panel 101, so that the first glue dispensing sub-portion 118 also has the function of the lens member 116, the light is deflected more to the area covered by the orthographic projection of the first light-transmitting sub-portion 107 on the display panel 101, the manufacturing process is simplified, and the manufacturing cost of the display module 100 is reduced.

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

Please refer to FIGS. 1 to 5 . In some embodiments, the backlight assembly 104 further includes a back plate 119 located on a side of the light source layer 106 away from the display panel 101, and the first light-transmitting sub-portion 107 at least penetrates the back plate 119. When the backlight assembly 104 further includes the driving layer 114, the first light-transmitting sub-portion 107 further penetrates the driving layer 114. The backlight assembly 104 further includes a first adhesive layer 120 located between the back plate 119 and the driving layer 114, the first adhesive layer 120 may have a heat-conducting function, and the first light-transmitting sub-portion 107 further penetrates the first adhesive layer 120. That is, the first light-transmitting sub-portion 107 is formed by openings of all film layers on a side of the light source layer 106 away from the display panel 101.

Please refer to 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, and the second light-transmitting sub-section 115 penetrates the optical film layer 121. The optical film layer 121 can be one of a diffusion film layer, a brightness enhancement film layer, and a spectroscopic film layer. Alternatively, when the backlight assembly 104 includes a plurality of optical film layers 121, the optical film layer 121 can be a plurality of diffusion film layers, brightness enhancement film layers, and spectroscopic film layers. The diffusion film layer is used to diffuse the light from the light source section 108 so that the light emitted from the diffusion film layer is more uniform. The brightness enhancement film layer is used to improve the utilization rate of the light emitted by the light source section 108 by the backlight assembly 104. The spectroscopic film layer is used to converge the light incident on the spectroscopic film layer to improve the front brightness.

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.

Please refer to FIG. 1 to FIG. 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 can be switched between a haze state and a transparent state according to usage scenarios.

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.

Referring to FIGS. 2 to 5 , in some embodiments, the backlight assembly 104 further includes an anti-peeping layer 123 located between the optical film material layer 121 and the haze adjustment layer 122, and the second light-transmitting sub-portion 115 also penetrates the anti-peeping layer 123. When the haze adjustment layer 122 exists, the second light-transmitting sub-portion 115 is formed by all the film openings between the light source layer 106 and the haze adjustment layer 122 in the backlight assembly 104. When the haze adjustment layer 122 does not exist, the second light-transmitting sub-portion 115 is formed by all the film openings in the backlight assembly 104 located on the side of the light source layer 106 close to the display panel 101.

In some embodiments, the thickness of the anti-peep 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.

Please refer to FIG. 5 . In some embodiments, the second light-transmitting sub-portion 115 may include a first light-transmitting hole 124 penetrating the optical film material layer 121 and a second light-transmitting hole 125 penetrating the anti-peep layer 123 . The first light-transmitting hole 124 is connected to the second light-transmitting hole 125 .

In some embodiments, the orthographic projection of the first light-transmitting sub-section 107 on the display panel 101 is located 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 is located within the orthographic projection of the second light-transmitting hole 125 on the display panel 101. Referring to FIG5, when the diameters of the first light-transmitting sub-section 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-section 110 to the second type of light source sub-section 111, the minimum spacing between the first type of light source sub-section 110 and the second type of light source sub-section 111 is 2.5 mm, the minimum spacing between the second type of light source sub-sections 111 is 3 mm, and the minimum spacing between the first type of light source sub-sections 110 is 1.66 mm, the display brightness distribution and the 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% (as shown in FIG10 and FIG11).

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 a 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.

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, it is convenient for the infrared light sensor to 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-areas, and the array substrate 126, the color film substrate 127 and the liquid crystal layer corresponding to one pixel sub-area constitute one pixel.

Please refer to Figures 1 to 4. In some embodiments, the display module 100 also includes a first polarizer 128 and a second polarizer 129. The first polarizer 128 is located between the display panel 101 and the backlight assembly 104, and the second polarizer 129 is located on a side of the display panel 101 away from the backlight assembly 104.

The display module 100 provided by the embodiment of the present invention, by arranging the filter part 109 in the backlight assembly 104, the orthographic projection of the filter part 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 reflectivity of the filter part 109 to visible light is greater than or equal to 90%, and the transmittance to infrared light is greater than or equal to 80%. When the display module 100 is applied to a display device, the light output of the light source part 108 at the light-transmitting part 105 is increased without affecting the reception of infrared light by the infrared photosensor, thereby improving the uniformity of picture display in the first display area 102 and the second display area 103 of the display module 100 and improving the display effect.

Please refer to Figures 12 and 13. An embodiment of the present invention further provides a display device 10, including any of the above-mentioned display modules 100, and an infrared sensor 200, wherein the infrared sensor 200 is arranged corresponding to the light-transmitting portion 105, and the infrared sensor 200 is located on the side of the backlight assembly 104 of the display module 100 away from the display panel 101.

The specific structure of the display module 100 may be referred to any of the above-mentioned embodiments and drawings of the display module, and will not be described in detail here.

In some embodiments, the display device 10 can be applied to vehicle-mounted display, and can realize functions such as seat belt monitoring, fatigue monitoring, and distraction monitoring for the driver.

The embodiment of the present 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-portion and a light source layer having a light source portion and a filter portion, the orthographic projection of the first light-transmitting sub-portion on the display panel is located within the orthographic projection of the filter portion on the display panel, the reflectivity of the filter portion to visible light is greater than or equal to 90%, and the transmittance of infrared light is greater than or equal to 80%. The present invention arranges the filter portion so that the filter portion covers the first light-transmitting sub-portion, 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 light receiving of the infrared photosensitive sensor when displaying a picture normally, and the light output of the light source portion in the light-transmitting portion is increased, thereby improving the picture display uniformity of the first display area and the second display area of the display module and improving the display effect.

A display module and a display device provided by an embodiment of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and the scope of application. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims (11)

1. A display module having a first display area and a second display area surrounding the first display area, the display module comprising:

A display panel;

a backlight assembly disposed at one side of the display panel and including a light transmitting portion disposed in the first display region;

The backlight assembly comprises a light source layer, wherein the light transmission part comprises a first light transmission sub-part, the first light transmission sub-part is positioned at one side of the light source layer far away from the display panel, the light source layer comprises a light source part and a light filtering part, and the orthographic projection of the first light transmission sub-part on the display panel is positioned in the orthographic projection of the light filtering part on the display panel;

The reflectivity of the filtering part to visible light is greater than or equal to 90%, and the transmissivity of the filtering part to infrared light is greater than or equal to 80%.

2. The display module of claim 1, wherein the light source portion comprises a plurality of first-type light source sub-portions and a plurality of second-type light source sub-portions, the first-type light source sub-portions being disposed around the first light-transmitting sub-portions, the second-type light source sub-portions being located on a side of the first-type light source sub-portions away from the light-transmitting portions;

The minimum distance between the first type light source sub-part and the second type light source sub-part is smaller than the minimum distance between the second type light source sub-parts.

3. The display module of claim 2, wherein a minimum spacing between the first type of light source sub-sections is less than a minimum spacing between the first type of light source sub-sections and the second type of light source sub-sections in a center-to-perimeter direction of the first display area.

4. The display module of claim 2, wherein the control unit of the first type of light source sub-section is different from the control unit of the second type of light source sub-section.

5. The display module of claim 1, wherein the light-transmitting portion further comprises a second light-transmitting sub-portion, the second light-transmitting sub-portion being located on a side of the light source layer adjacent 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.

6. The display module of claim 5, wherein the front projection of the filter on the display panel is within the front projection of the second light-transmitting sub-portion on the display panel;

The orthographic projection of a part of the light source part on the display panel is positioned in the orthographic projection of the second transmission sub part on the display panel.

7. The display module of claim 6, further comprising a lens member, wherein an orthographic projection of the lens member on the display panel is located within an orthographic projection of the second light-transmitting sub-portion on the display panel, the lens member comprising at least one arcuate surface, the arcuate surface protruding toward the display panel.

8. The display module of claim 7, wherein the backlight assembly further comprises dispensing portions, the dispensing portions cover the light source portions in a one-to-one correspondence, the dispensing portions comprise first dispensing portions, orthographic projections of the first dispensing portions on the display panel are located in orthographic projections of the second transparent portions on the display panel, and the first dispensing portions are integrally disposed with the lens member.

9. The display module of claim 5, wherein the backlight assembly further comprises a back plate positioned on a side of the light source layer away from the display panel, the first light-transmitting sub-portion penetrating at least the back plate;

the backlight assembly further comprises at least one optical film layer positioned between the light source layer and the display panel, and the second light-transmitting sub-portion penetrates through the optical film layer.

10. The display module according to any one of claims 1 to 9, wherein a height of the light source portion is greater than or equal to a thickness of the light filter portion.

11. A display device, comprising the display module of any one of claims 1 to 10, and an infrared sensor disposed corresponding to the light-transmitting portion, the infrared sensor being located on a side of a backlight assembly of the display module away from a display panel.