Display module and display device

Abstract

The present invention relates to the field of display technology, and to a display module and a display device. The display module of the present invention includes a backlight unit and a display panel; the display panel is arranged on the light-emitting side of the backlight unit; the display panel includes a first display area and a second display area surrounding the first display area; the backlight unit includes an optical film layer, and a first through hole penetrating the optical film layer is arranged along the thickness direction of the optical film layer, and a fill light source is located on a side of the optical film layer away from the display panel and arranged around the first through hole; the display module also includes a first quantum dot film, and the first quantum dot film is located in the first display area of ​​the display panel. The present invention arranges a first quantum dot film in the first display area of ​​the display module, and transforms the color of the light of the fill light source entering the first display area through the first quantum dot film, so that the color difference between the first display area and the second display area is eliminated or reduced, thereby improving the display optical uniformity of the light-emitting surface of the display module.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a display module and a display device. Background Art

[0002] With the continuous development of display technology and people's pursuit of better display effects, full screen has become a mainstream trend in the application of terminal equipment (such as mobile phones, Pads, etc.); due to the lighting requirements of some functional devices in terminal equipment such as cameras, light sensors, etc., the relevant technology adopts the method of opening holes in the backlight film material, and a photosensitive device is arranged at the opening of the backlight film material. The opening area of ​​the backlight film material is both a lighting area and a display area; however, this structure easily causes color difference between the opening area of ​​the backlight film material and other display areas during display, thereby affecting the optical uniformity of the display. Summary of the invention

[0003] In view of this, the present invention provides a display module and a display device, which are intended to reduce the color difference between the opening area of ​​the backlight film material and other display areas, and improve the display optical uniformity.

[0004] The technical solution of the present invention is as follows:

[0005] In a first aspect, the present invention provides a display module, comprising a backlight unit and a display panel; the display panel is arranged on a light emitting side of the backlight unit;

[0006] The display panel includes a first display area and a second display area surrounding the first display area;

[0007] The backlight unit comprises an optical film layer, a first through hole penetrating the optical film layer is arranged along a thickness direction of the optical film layer, and the first through hole overlaps with a projection of the first display area;

[0008] The backlight unit further includes a fill light source, and the fill light source is located on a side of the optical film layer away from the display panel; along the direction of the plane where the backlight unit is located, the fill light source is arranged around the first through hole;

[0009] The display module further includes a first quantum dot film, and the first quantum dot film is located in a first display area of ​​the display panel.

[0010] In a second aspect, based on the same inventive concept, the present invention further provides a display device, comprising the display module provided in the first aspect of the present invention.

[0011] Compared with the related art, the display module and display device provided by the present invention achieve at least the following beneficial effects:

[0012] The present invention arranges a first quantum dot film in the first display area of ​​the display module, and changes the color of light from a fill light source entering the first display area through the first quantum dot film, thereby eliminating or reducing the color difference between the first display area and the second display area, thereby improving the display optical uniformity of the light emitting surface of the display module.

[0013] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0014] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0016] Figure 1 FIG. 1 is a schematic diagram of a film structure of a display module provided by an embodiment of the present invention;

[0017] Figure 2 The figure shows a schematic diagram of a combined structure of a light panel, a backlight source and a fill light source of a display module provided by the present invention;

[0018] Figure 3 Shown is a zoning diagram of a first display area provided by an embodiment of the present invention;

[0019] Figure 4 Shown is a schematic structural diagram of a color filter substrate provided by an embodiment of the present invention;

[0020] Figure 5 The figure shows a schematic structural diagram of a color film substrate at a first display area provided by an embodiment of the present invention;

[0021] Figure 6 FIG. 1 is a schematic diagram of a structure of a display device provided by an embodiment of the present invention;

[0022] Figure 7 FIG. 1 is a schematic diagram of a structure of a display device provided by an embodiment of the present invention;

[0023] Figure 8 FIG. 1 is a schematic diagram of a structure of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0025] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0026] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0027] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0028] It is obvious to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention. Therefore, the present invention is intended to cover modifications and variations of the present invention that fall within the scope of the corresponding claims (technical solutions claimed for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present invention can be combined with each other without contradiction.

[0029] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] The present invention provides a display module, comprising a backlight unit and a display panel; the display panel is arranged on the light-emitting side of the backlight unit; the display panel comprises a first display area and a second display area surrounding the first display area; the backlight unit comprises an optical film layer, a first through hole penetrating the optical film layer is arranged along the thickness direction of the optical film layer, and the first through hole overlaps with the projection of the first display area; the backlight unit further comprises a fill light source, the fill light source is located on the side of the optical film layer away from the display panel; along the direction of the plane where the backlight unit is located, the fill light source is arranged around the first through hole; the display module further comprises a first quantum dot film, the first quantum dot film is located in the first display area of ​​the display panel. The fill light source of the present invention can provide light for the first display area, and the first quantum dot film arranged in the first display area is used to perform color conversion on the fill light source; by performing color conversion on the light entering the first display area from the fill light source, the color difference between the first display area and the second display area is reduced or eliminated, thereby improving the optical uniformity of the display module.

[0031] The above is the core idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the embodiments of the present invention.

[0032] Figure 1 FIG. 1 is a schematic diagram of a film structure of a display module provided by an embodiment of the present invention. Please refer to FIG. Figure 1 The display module of the present invention includes a backlight unit 1 and a display panel 2; the display panel 2 is arranged on the light-emitting side of the backlight unit 1; the display panel 2 includes a first display area 21 and a second display area 22 surrounding the first display area 21; the backlight unit 1 includes an optical film layer 11, and a first through hole 12 penetrating the optical film layer 11 is arranged along the thickness direction of the optical film layer 11, and the first through hole 12 overlaps with the projection of the first display area 21; the backlight unit 1 also includes a fill light source 13, and the fill light source 13 is located on a side of the optical film layer 11 away from the display panel 2; along the direction of the plane where the backlight unit 1 is located, the fill light source 13 is arranged around the first through hole 12; the display module also includes a first quantum dot film 211, and the first quantum dot film 211 is located in the first display area 21 of the display panel 2.

[0033] Please continue to refer to Figure 1 Generally speaking, the optical film layer 11 included in the backlight unit 1 includes a QD film material, a uniform light film and a diffusion film. Therefore, the optical film layer 11 has a certain transformation processing effect on the color of the incident light; but since the optical film layer 11 corresponding to the first display area 21 is provided with a first through hole 12, and the second display area 22 lacks a corresponding optical film layer, therefore, on the light emitting surface, the first display area 21 and the second display area 22 are prone to color difference.

[0034] Based on the consideration of the optical display uniformity of the light emitting surface, the present invention sets a first quantum dot film 211 in the first display area 21 of the display module, and transforms the color of the light from the fill light source 13 entering the first display area 21 through the first quantum dot film 211, thereby eliminating or reducing the color difference between the first display area 21 and the second display area 22, thereby improving the display optical uniformity of the light emitting surface.

[0035] Figure 2 The figure shows a schematic diagram of a combined structure of a light board, a backlight light source and a fill light source of a display module provided by the present invention. In some optional embodiments of the present invention, the backlight unit 1 includes a light board 15 and a backlight light source 14. A second through hole 16 penetrating the light board 15 is provided along the thickness direction of the light board 15, and along the thickness direction of the light board 15, the projection of the second through hole 16 overlaps with the projection of the first through hole 12; the backlight light source 14 is located between the light board 15 and the optical film layer 11, and the backlight light source 14 includes a plurality of light-emitting elements, and the plurality of light-emitting elements are arranged on the light board 15 and correspond to the second display area 22 of the display panel 2; the plurality of light-emitting elements include a first type of light-emitting element 141 and a second type of light-emitting element 142, and the second type of light-emitting element 142 is arranged around the second through hole 16, and the second type of light-emitting element 142 is the fill light source 13.

[0036] Specifically, please combine Figure 1 and Figure 2 In some optional embodiments of the present invention, the backlight source 14 can adopt a direct-type backlight. The direct-type backlight can evenly configure the light-emitting elements behind the display panel as a light source, so that the backlight can be evenly transmitted to the entire screen, and the picture details are more delicate and realistic.

[0037] Please combine Figure 1 and Figure 2 The backlight unit 1 adopts a direct-down backlight. The backlight unit 1 includes a lamp board 15 and a backlight light source 14. A second through hole 16 penetrating the lamp board 15 is provided along the thickness direction of the lamp board 15. The backlight light source 14 includes a first light-emitting element 141 and a second light-emitting element 142. The second light-emitting element 142 is arranged around the second through hole 16, and the second light-emitting element 142 also serves as a fill light source 13. In this way, when the display module is working in the display state, the backlight light source 14 is turned on, and the first light-emitting element 141 and the second light-emitting element 142 both provide light sources for the second display area 22. At the same time, the second light-emitting element 142 surrounding the second through hole 16 emits light at a large angle close to one side of the second through hole 16 into the first through hole 12 to provide a light source for the first display area 21.

[0038] Based on the above, the embodiment of the present invention adopts a direct backlight, and the fill light source 13 uses some light-emitting elements of the backlight light source 14 to fill the first display area 21, without the need to set up light-emitting elements separately, and has the characteristics of simple structure; in addition, when the display module is displaying, the backlight and fill light can be controlled at the same time, which is more convenient.

[0039] It should be noted that the backlight unit 1 of the display module of the present invention can be Figure 1 The direct-down structure shown can also adopt an edge-entry backlight; the direct-down backlight structure has the characteristic of uniform light output, and the edge-entry backlight structure can make the display module thinner and lighter to a certain extent. In the case of adopting the edge-entry backlight structure, the fill light source 13 is set separately to fill light for the first display area 21 separately, and the structure is slightly complicated.

[0040] Please continue to refer to Figure 1 In some optional embodiments of the present invention, the optical film layer 11 includes a second quantum dot film 111 , and the thickness of the second quantum dot film 111 is greater than the thickness of the first quantum dot film 211 .

[0041] Specifically, Figure 1Taking the direct-type backlight structure shown as an example, the backlight light source 14 includes a plurality of light-emitting elements, and the plurality of light-emitting elements are generally evenly arranged in a matrix on the light board 15; since the second type of light-emitting elements 142 of the backlight light source 14 of the present invention also serve as light-emitting elements of the fill light source 13, in order to achieve a better fill light function, the second type of light-emitting elements 142 are arranged around the second through hole 14; when the display module is in the display state, the backlight light source 14 provides light for the second display area 22, and part of the light emitted by the second type of light-emitting elements 142 located near the second through hole 16 in the backlight light source 14 serves as fill light for the first display area 21, so the light transmittance of the second display area 22 is greater than the light transmittance of the first display area 21; the present invention sets the thickness of the second quantum dot film 111 to be greater than the thickness of the first quantum dot film 211, so as to match the light transmittance of the second display area 22 and the first display area 21, which helps to reduce or eliminate the color difference between the second display area 22 and the first display area 21.

[0042] Figure 3 The figure shows a first display area provided by an embodiment of the present invention; please refer to Figure 3 In some optional embodiments of the present invention, the first display area 21 includes a first region 21A and a second region 21B surrounding the first region 21A, and the first quantum dot film 211 is located in the first region 21A.

[0043] Specifically, please combine Figure 1 , Figure 2 and Figure 3 The present invention adopts a direct-down backlight structure. The second type of light-emitting elements 142 arranged around the second through hole 16 in the backlight light source 14 also serve as light-emitting elements of the fill light source 13. When the first display area 21 is filled with light, the large-angle light emitted by the second type of light-emitting elements 142 partially leaks into the first through hole 12. Generally speaking, when the large-angle light is reflected by the hole wall of the first through hole 12 and emitted from the first display area 21 of the display module, the emitted light is denser in the middle of the first display area 21 (the first area 21A) and sparser in the second area 21B.

[0044] In addition, the first display area 21 of the display module of the present invention has two working states, one is the display state, and the other is the lighting state; when the display module works in the lighting state, external light will enter the first through hole 12 through the first display area 21 of the display panel 2, and the first quantum dot film 211 is located in the first display area 21 of the display panel 2, and because the first quantum dot film 211 has the function of color change, it may cause external lighting to be distorted.

[0045] Based on the above reasons, the present invention sets the first quantum dot film 211 in the first area 21A, so that the first quantum dot film 211 can reduce the color difference between the first display area 21 and the second display area 22 when in the display state; in the lighting state, it can minimize the impact of incident light on the first display area 21 to avoid lighting distortion.

[0046] Please continue to refer to Figure 1 In some optional embodiments of the present invention, the display panel includes a color filter substrate 2A, an array substrate 2B and a liquid crystal layer 2C, the color filter substrate 2A and the array substrate 2B are arranged opposite to each other, and the liquid crystal layer 2C is located between the color filter substrate 2A and the array substrate 2B; along the thickness direction of the display panel 1, the first quantum dot film 211 is arranged on one side of the color filter substrate 2A.

[0047] Specifically, please combine Figure 1 and Figure 2 In the backlight source 14 of the present invention, part of the light emitted by the second type light-emitting element 142 located near the second through hole 16 is used as fill light for the first display area 21, and the fill light leaking into the first through hole 12 is the large-angle light emitted by the second type light-emitting element 142. Since the large-angle light is easy to irradiate the center of the first display area 21, the closer to the light-emitting side of the display panel 2, the more concentrated the fill light is; the first quantum dot film 211 is selected to be arranged on the side of the color filter substrate 2A, compared with the first quantum dot film 211 being arranged on the array substrate 2B, the processing efficiency of the fill light is higher, and the setting area of ​​the first quantum dot film 211 can be reduced; since the setting area of ​​the first quantum dot film 211 can be reduced, based on similar reasons to the above, the influence of the first quantum dot film 211 on the incident light of the first display area 21 is also reduced.

[0048] Figure 4 FIG. 1 is a schematic structural diagram of a color film substrate provided by an embodiment of the present invention. Figure 5 FIG. 1 is a schematic diagram of the structure of a color film substrate in the first display area provided by an embodiment of the present invention. Please refer to FIG. Figure 4 and Figure 5 In an optional embodiment of the present invention, the color filter substrate 2A corresponding to the first display area 21 includes a color filter area 2A1 and a high-transmittance area 2A2, and the color filter area 2A1 is provided with a color filter layer 2a3; the first quantum dot film 211 is arranged on the side of the color filter layer 2a3 close to the liquid crystal layer 2C.

[0049] For more details, please refer to Figure 4 and Figure 5The display panel 2 includes a first display area 21 and a second display area 22. Since the second display area 22 only needs to have a display function and does not need a lighting function, the color film substrate 2A is covered with a color film layer 2a3 at the opening of the black matrix of the second display area 22; and the first display area 21 must have both a display function and meet the lighting requirements, so the color film substrate 2A is at the corresponding position of the first display area 21, and the color film substrate 2A includes a color film area 2A1 and a high-transmittance area 2A2. The color film area 2A1 is provided with a color film layer 2a3, and the high-transmittance area 2A2 is not provided with a color film layer 2a3; the color film area 2A1 is provided with a color film layer 2a3 to achieve the display function; the high-transmittance area 2A2 is not provided with a color film layer 2a3 to avoid the color film layer 2a3 from filtering the external light, so that the external light can enter the display panel 2 with a higher transmittance.

[0050] Please continue to refer to Figure 4 and Figure 5 Specifically, in some embodiments, the color filter substrate 2A includes a substrate 2a1, a black matrix 2a2 and a color filter layer 2a3, the black matrix 2a2 is arranged on the side of the substrate 2a1 facing the liquid crystal layer 2C, the black matrix 2a2 has a plurality of openings, and the color filter layer 2a3 is filled in the openings; please continue to refer to Figure 5 For the embodiment provided by the present invention, in order to improve the light transmittance of the high-transmittance area 2A2, the width of the black matrix 2a2 at the second display area 22 is wider, and the width of the black matrix 2a2 at the first display area 21 is smaller.

[0051] The present invention selects to arrange the first quantum dot film 211 on the side of the color filter layer 2a3 close to the liquid crystal layer 2C, which has the following advantages, and is described by taking the backlight source 14 as a blue light source and the color filter layer 2a3 including RGB three-color display color resistance as an example:

[0052] Assume that the first quantum dot film 211 is not disposed on the side of the color filter layer 2a3 in the first display area 21 close to the liquid crystal layer 2C. Figure 1 The fill light entering the first display area 21 comes from part of the large-angle light emitted by the fill light source 13. Most of the fill light directly enters the first display area 21 without undergoing color change by the second quantum dot film 111. Therefore, the fill light entering the first display area 21 is mainly blue light. The blue light in the first display area 21 needs to pass through the array substrate 2B, the liquid crystal layer 2C and the color filter substrate 2A to be emitted.

[0053] Please refer to Figure 4 and Figure 5, when the blue light is at the color filter substrate 2B, part of the blue light will irradiate the high-transmittance area 2A2, and then emit through the high-transmittance area 2A2; and part of the blue light will irradiate the color filter area 2A1. Since the color filter area 2A1 is provided with a color filter layer 2a3, the color filter layer 2a3 generally includes blue display color resistance, green display color resistance and red display color resistance; when the blue light encounters the blue display color resistance, it will pass through the blue color resistance and emit; but when the blue light encounters the red display color resistance or the green display color resistance, it will be intercepted; therefore, when the first quantum dot film 211 is not provided on the side of the color filter layer 2a3 close to the liquid crystal layer 2C in the first display area 21, when the blue light directly irradiates the color filter layer 2a3, only part of the blue light will pass through the color filter layer 2a3, the fill light efficiency is poor, and the emitted light is only blue light.

[0054] In contrast, the present invention sets a first quantum dot film 211 on the side of the color filter layer 2a3 close to the liquid crystal layer 2C. Figure 4 and Figure 5 , the blue light is at the color filter substrate 2B, part of the blue light will be irradiated to the high transmittance area 2A2, and then emitted through the high transmittance area 2A2; and part of the blue light will be irradiated to the color filter area 2A1. Since the color filter area 2A1 is provided with a color filter layer 2a3, and the first quantum dot film 211 is provided on the side of the color filter layer 2a3 close to the liquid crystal layer 2C, the blue light will first be irradiated to the first quantum dot film 211. When the blue light is irradiated to the first quantum dot film 211, the quantum dots in the first quantum dot film 211 will be partially converted into red light and green light under the irradiation of the blue light, and part of the blue light will be converted into red light and green light. It will directly pass through the first quantum dot film 211; in this way, when the blue light is processed by the first quantum dot film 211, it will produce red light, green light and blue light, and the three are mixed together to obtain white light; thereafter, when the blue light encounters the blue display color resistance, it will pass through the blue color resistance and emit; when the red light encounters the red display color resistance, it will pass through the red color resistance and emit; when the green light encounters the green display color resistance, it will pass through the green color resistance and emit; in this way, after the blue light is processed by the first quantum dot film 211, it can increase the part that passes through the red display color resistance and the green display color resistance.

[0055] From a comprehensive comparison, setting the first quantum dot film 211 on the side of the color filter layer 2a3 close to the liquid crystal layer 2C can not only change the color of the fill light and reduce the color difference between the first display area 21 and the second display area 22, but also the blue light can increase the part that passes through the red display color resistance and the green display color resistance after being processed by the first quantum dot film 211. In this way, the fill light efficiency of the fill light source 13 can be improved.

[0056] On the other hand, when the display panel 2 works in the photosensitive mode, in order to prevent external light from passing through the display panel 2 without distortion, the deflection direction of the liquid crystal at the color film layer 2a3 in the first display area 21 is usually controlled so that the liquid crystal at the color film layer 2a3 in the first display area 21 is opaque, and external light only enters the display panel 2 through the high-transmittance area 2A2; therefore, when the first quantum dot film 211 is arranged on the side of the color film layer 2a3 close to the liquid crystal layer 2C, since the color film area 2A1 here does not need to be illuminated, the first quantum dot film 211 will not affect the lighting.

[0057] Please continue to refer to Figure 2 In some optional embodiments of the present invention, the distance between two adjacent first-type light-emitting elements 141 in any direction is greater than the distance between two adjacent second-type light-emitting elements 142 along their surrounding direction.

[0058] For more details, please refer to Figure 2 In the present invention, the first type of light-emitting elements 141 are evenly distributed in a matrix, and the superposition effect between the first type of light-emitting elements 141 can be utilized, and the utilization rate of the light source is relatively high; the first display area 21 includes a first area 21A and a second area 21B, and the second area 21B is close to the second display area 21. The optical film layer 11 at the corresponding part of the second display area 22 has a light diffusion effect, which can disperse part of the light and diffuse it to the second area 21B to supplement the second area 21B; and the first area 21A is far away from the second type of light-emitting elements 142, so more second type of light-emitting elements 142 are needed to collect light; based on this, the present invention arranges the second type of light-emitting elements 142 surrounding the second through hole 16 more densely, so that the brightness uniformity of the second display area 22 and the first display area 21 can be optimized.

[0059] Please continue to refer to Figure 2 In some optional embodiments of the present invention, a plurality of second type light emitting elements 142 are evenly arranged around the second through hole 16 .

[0060] Specifically, the plurality of second-type light-emitting elements 142 are evenly arranged around the second through hole 16 , which can improve the optical display uniformity of the first display area 21 .

[0061] Please continue to refer to Figure 2 In some optional embodiments of the present invention, the second through hole 16 is circular, and the second type of light emitting element 142 is arranged along the radial direction of the second through hole 16 .

[0062] Specifically, please combine Figure 1 and Figure 2The optical film layer 11 at the position corresponding to the second display area 22 of the present invention has a light diffusion effect, which can disperse a part of the light and diffuse it to the first display area 21, thereby improving the brightness of the first display area 21. The second through hole 16 is set to be circular, which can improve the uniformity of the fill light; in addition, the second type of light-emitting elements 142 near the first display area 21 are arranged radially along the second through hole 16. In this way, more second type of light-emitting elements 142 can be arranged around the second through hole 16 in a limited space, thereby facilitating the fill light in the center of the first display area 21.

[0063] Please refer to Figure 1 and Figure 2 In some optional embodiments of the present invention, the light-emitting element is a mini LED, and the light-emitting color of the light-emitting element is blue.

[0064] Specifically, the first type of light emitting element 141 and the second type of light emitting element 142 use blue mini LEDs. Under the existing technical background, the efficiency of the blue mini LED and the first quantum dot film 211 is the best. The present invention sets the first quantum dot film 211 on the side of the color filter layer 2a3 of the first display area 21 close to the liquid crystal layer 2C, which can convert blue to white light to a certain extent, avoid the first display area 21 from being blue, and improve the optical display uniformity of the first display area 21 and the second display area 22.

[0065] Based on the same inventive concept, the present invention also provides a display device, please refer to Figure 6 , Figure 6 FIG. 1 is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. The display device provided in this embodiment includes a display module provided in any of the above embodiments of the present invention.

[0066] It is understandable that the display device provided in the embodiment of the present invention can be a display device with display function such as a computer, a mobile phone, a tablet, etc., and the present invention does not specifically limit this. The display device provided in the embodiment of the present invention has the beneficial effects of the display module provided in the embodiment of the present invention. For details, please refer to the specific description of the display module in the above embodiments, and this embodiment will not be repeated here.

[0067] Please continue to refer to Figure 6 In some optional embodiments of the present invention, the display device further includes a photosensitive device 40 ; at least a portion of the photosensitive device 40 is embedded in the first through hole 12 .

[0068] Specifically, the photosensitive device 40 must be able to receive the external light entering from the first display area 21. Generally, the photosensitive device 40 is set on the side of the light board 14 away from the optical film layer 11; the present invention chooses to embed part of the photosensitive device 40 into the first through hole 12, so that the aperture of the first through hole 12 can be reduced, so that the light source has a better uniform light effect. However, it should be noted that the aperture of the first through hole 12 must also meet the assembly requirements, and the aperture of the first through hole 12 cannot affect the field of view received by the photosensitive device 40; in some embodiments, the photosensitive device 40 can be a camera.

[0069] Figure 7 FIG. 1 is a schematic diagram of a structure of a display device provided by an embodiment of the present invention. Please refer to FIG. Figure 7 The portion of the photosensitive device 40 embedded in the first through hole 12 is provided with a color conversion layer 401, and the color conversion layer 401 is a third quantum dot film provided on the surface of the photosensitive device 40 on one side close to the optical film layer.

[0070] Specifically, please combine Figure 1 , Figure 5 and Figure 7 In order not to affect the lighting of the photosensitive device 40, the first quantum dot film 211 arranged on the side of the color filter layer 2a3 of the first display area 21 of the present invention close to the liquid crystal layer 2C needs to be as small as possible; for this, a color change layer 401 can be provided in the part where the photosensitive device 40 is embedded in the first through hole 12. In this way, the optical display uniformity of the first display area 21 and the second display area 22 can be improved through the combined effect of the color change layer 401 and the first quantum dot film 211.

[0071] Figure 8 FIG. 1 is a schematic diagram of a structure of a display device provided by an embodiment of the present invention. Please refer to FIG. Figure 8 Along the thickness direction of the display module, the photosensitive device 40 includes a first portion 402, the first portion 402 is provided with a color conversion layer 401, and the projection area of ​​the first portion 402 close to the display panel 2 is smaller than the projection area of ​​the first portion 402 away from the display panel 2.

[0072] For more details, please refer to Figure 8 The projection area of ​​the first portion 402 of the photosensitive device 40 close to the display panel 2 is smaller than the projection area of ​​the first portion 402 away from the display panel 2. In some embodiments, the shape of the first portion 402 of the photosensitive device 40 is similar to a truncated cone or a prism. In this way, the incident surface of the fill light can have a certain inclination angle, which makes it easier for the light to be reflected upward and toward the center area of ​​the first display area 21, which is beneficial to fill light in the center area of ​​the first display area 21 and helps to improve the optical display uniformity of the first display area 21 and the second display area 22.

[0073] In summary, the display module and display device provided by the present invention achieve at least the following beneficial effects:

[0074] Firstly, the present invention sets a first quantum dot film 211 in the first display area 21 of the display module, and changes the color of the light from the fill light source 13 entering the first display area 21 through the first quantum dot film 211, so that the color difference between the first display area 21 and the second display area 22 is eliminated or reduced, thereby improving the display optical uniformity of the light output surface; secondly, the present invention adopts a direct backlight, and the fill light source uses part of the light-emitting elements of the backlight light source to fill the first display area 21, without the need to set up a fill light source 13 separately, and has the characteristics of simple structure; and when the display module is displaying, the backlight and the fill light can be controlled at the same time, which is more convenient; thirdly, the present invention sets the thickness of the second quantum dot film 111 to be greater than the thickness of the first quantum dot film 211, so as to match the light transmittance of the second display area 22 and the first display area 21, which helps to reduce or eliminate the color difference between the second display area 22 and the first display area 21; thirdly, the present invention sets the first quantum dot film 211 at The first area 21A enables the first quantum dot film 211 to balance the color difference between the first display area 21 and the second display area 22 when in the display state; in the lighting state, it can minimize the impact of the incident light on the first display area 21 to avoid lighting distortion; thirdly, the present invention sets the first quantum dot film 211 on the side of the color filter layer 2a3 close to the liquid crystal layer 2C. This structure can not only change the color of the fill light and reduce the color difference between the first display area 21 and the second display area 22, but also increase the part of the blue light that passes through the red display color resistance and the green display color resistance after being processed by the first quantum dot film 211. In this way, the utilization rate of the fill light source 13 can be improved; finally, for the display device, a color conversion layer 401 can be set at the part where the photosensitive device 40 is embedded in the first through hole 12. In this way, the optical display uniformity of the first display area 21 and the second display area 22 can be improved through the combined effect of the color change layer 401 and the first quantum dot film 211.

[0075] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display module, characterized in that: It includes a backlight unit and a display panel; the display panel is arranged on the light-emitting side of the backlight unit; The display panel includes a first display area and a second display area surrounding the first display area; The backlight unit comprises an optical film layer, a first through hole penetrating the optical film layer is arranged along a thickness direction of the optical film layer, and the first through hole overlaps with a projection of the first display area; The backlight unit further includes a fill light source, and the fill light source is located on a side of the optical film layer away from the display panel; along the direction of the plane where the backlight unit is located, the fill light source is arranged around the first through hole; The display module further includes a first quantum dot film, and the first quantum dot film is located in a first display area of ​​the display panel; The display panel comprises a color filter substrate, an array substrate and a liquid crystal layer, wherein the color filter substrate and the array substrate are arranged opposite to each other, and the liquid crystal layer is located between the color filter substrate and the array substrate; Along the thickness direction of the display panel, the first quantum dot film is arranged on one side of the color filter substrate; The color film substrate corresponding to the first display area includes a color film area and a high-transmittance area, and the color film area is provided with a color film layer; The first quantum dot film is arranged on a side of the color filter layer close to the liquid crystal layer.

2. The display module according to claim 1, characterized in that: The backlight unit further comprises a lamp board and a backlight light source, a second through hole penetrating the lamp board is arranged along the thickness direction of the lamp board, and along the thickness direction of the lamp board, a projection of the second through hole overlaps with a projection of the first through hole; The backlight source is located between the light board and the optical film layer, and the backlight source includes a plurality of light-emitting elements, which are arranged on the light board and correspond to the second display area of ​​the display panel; The plurality of light emitting elements include a first type of light emitting elements and a second type of light emitting elements. The second type of light emitting elements are arranged around the second through holes. The second type of light emitting elements are the fill light sources.

3. The display module according to claim 2, characterized in that: The optical film layer includes a second quantum dot film, and the thickness of the second quantum dot film is greater than the thickness of the first quantum dot film.

4. The display module according to claim 2, characterized in that: The first display area includes a first region and a second region surrounding the first region, and the first quantum dot film is located in the first region.

5. The display module according to claim 2, characterized in that: The distance between two adjacent first-type light-emitting elements in any direction is greater than the distance between two adjacent second-type light-emitting elements along their surrounding direction.

6. The display module according to claim 5, characterized in that: A plurality of the second-type light-emitting elements are evenly arranged around the second through hole.

7. The display module according to claim 6, characterized in that: The second through hole is circular, and the second type of light emitting element is arranged along the radial direction of the second through hole.

8. The display module according to claim 2, characterized in that: The light emitting element is a miniLED, and the light emitting color of the light emitting element is blue.

9. A display device, characterized in that: A display module comprising any one of claims 1-8.

10. The display device according to claim 9, characterized in that: It also includes a photosensitive device; at least a portion of the photosensitive device is embedded in the first through hole.

11. The display device according to claim 10, characterized in that: The portion of the photosensitive device embedded in the first through hole is provided with a color conversion layer, and the color conversion layer is a third quantum dot film provided on the surface of the photosensitive device on one side close to the optical film layer.

12. The display device according to claim 11, characterized in that: Along the thickness direction of the display module, the photosensitive device includes a first part, the first part is provided with the third quantum dot film, and the projection area of ​​the first part close to the display panel is smaller than the projection area of ​​the first part away from the display panel.

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