Display module and display device

Abstract

The present disclosure relates to a display module and a display device. The display module includes: a display layer, a dimming layer, and a light sensor. The dimming layer is arranged on one side of the display layer. The light sensor is arranged on the side of the display layer away from the dimming layer. The orthographic projection of the light sensor on the display layer is located within the orthographic projection range of the dimming layer on the display layer. The dimming layer is configured to focus imaging light onto the light sensor. The above-mentioned display module and display device can increase the lighting area of ​​the light sensor and avoid the high highlight frequency of a single light-emitting device when used for fingerprint recognition, so as to improve the efficiency of fingerprint recognition and ensure the display effect of the display device after long-term use.

Description

Technical Field

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

[0002] Fingerprint recognition is the process of verifying identity by comparing the detailed features of different fingerprints. With the development of full-screen technology, under-screen fingerprint recognition has become one of the important means to increase the screen-to-body ratio of display devices.

[0003] Under-screen fingerprint recognition means: placing an optical fingerprint recognition module (Sensor) on one side of a light-emitting device. After controlling the light-emitting device to emit light to illuminate the user's finger, this part of the light is reflected through the fingerprint to the optical fingerprint recognition module. The optical fingerprint recognition module can form a fingerprint image based on the received light for fingerprint recognition.

[0004] However, fingerprint recognition is usually performed in a local area of ​​the display device (i.e., the fingerprint recognition area), so that the light-emitting devices located in the fingerprint recognition area are often in a high-brightness state, which easily leads to a faster lifespan decay of the local light-emitting devices in the display device, thereby causing uneven brightness and color deviation of the display device. Summary of the Invention

[0005] Based on this, it is necessary to provide a display module and a display device to increase the lighting area of ​​the light sensor and avoid the high brightness frequency of a single light-emitting device when used for fingerprint recognition, which is beneficial to improving the fingerprint recognition efficiency and ensuring the display effect of the display device after long-term use.

[0006] According to one aspect of an embodiment of the present disclosure, a display module is provided. The display module includes a display layer, a dimming layer, and a light sensor. The dimming layer is disposed on one side of the display layer. The light sensor is disposed on a side of the display layer facing away from the dimming layer. The orthographic projection of the light sensor on the display layer is within the orthographic projection of the dimming layer on the display layer. The dimming layer is configured to focus imaging light onto the light sensor.

[0007] In the embodiment of the present disclosure, the dimming layer is located on the side of the display layer away from the light sensor, and can focus the imaging light irradiated on different areas thereof to the light sensor. In this way, when the number of light sensors is the same, the dimming layer can be used to increase the area where the light sensor can collect imaging light, that is, the lighting area of ​​the light sensor. For example, when performing fingerprint recognition, the area of ​​the fingerprint recognition area is correspondingly increased, so that fingerprint recognition can be completed without the user's finger being accurately positioned, which is beneficial to improving fingerprint recognition efficiency and enhancing user experience. In addition, after increasing the area of ​​the fingerprint recognition area, the light-emitting device required to emit light is different according to the different placement positions of the user's finger. This can also avoid the situation where a single light-emitting device has a high frequency of highlighting, so as to avoid the problem of rapid life decay of local light-emitting devices, thereby ensuring the uniform display brightness of the display device and eliminating or reducing the color cast phenomenon, which is beneficial to ensuring the display effect of the display device after long-term use.

[0008] In some embodiments, the dimming layer includes: a plurality of special-shaped lenses arranged in an array.

[0009] Optionally, the special-shaped lens includes a bottom plane and a convex surface located on a side of the bottom plane close to the display layer, wherein the bottom planes of the plurality of special-shaped lenses are located on the same plane.

[0010] In some embodiments, the angle between the plane where the convex surface's boundary lies and the bottom plane, with the opening facing away from the light sensor, is positively correlated with the distance between the corresponding shaped lens and the light sensor. Thus, by designing different angles between the plane where the convex surface's boundary lies and the bottom plane for different shaped lenses, the dimming layer can be configured to focus imaging light incident on different areas of the lens.

[0011] Optionally, the convex surfaces of the plurality of special-shaped lenses have the same curvature, which facilitates the preparation of the dimming layer and simplifies the preparation process of the display module.

[0012] In some embodiments, the curvature of the convex surface is a gradual curvature.

[0013] Optionally, in a direction parallel to the bottom plane, the curvature of the convex surface gradually increases in a direction away from the light sensor.

[0014] Optionally, the minimum curvature of each convex surface is positively correlated with the distance from the corresponding special-shaped lens to the light sensor.

[0015] Optionally, the curvature change gradients of the convex surfaces of different shaped lenses are the same.

[0016] As described above, by designing the curvature change of the convex surface of each special-shaped lens and the change of the minimum curvature of the convex surface in different special-shaped lenses, the dimming layer can focus the imaging light irradiated on different areas thereof.

[0017] In some embodiments, the dimming layer includes at least one light control layer; wherein the surface of at least one light control layer close to the display layer is a curved surface, and the center of curvature of the curved surface is located on the side of the corresponding light control layer away from the display layer.

[0018] Optionally, the dimming layer includes at least two stacked light control layers; a surface of one of the light control layers close to the display layer is a curved surface, and a center of curvature of the curved surface is located on a side of the light control layer away from the display layer.

[0019] Optionally, the refractive index of the light-control layer gradually increases in the thickness direction toward the display layer. That is, the refractive index of different light-control layers is different. In this way, the imaging light can be focused by sequentially refraction of the imaging light by the multiple light-control layers.

[0020] By setting the surface shape of any light-controlling layer, the embodiment of the present disclosure can also superimpose the changes in light transmission angle caused by the curved surface on the basis of different refractive indices of different light-controlling layers, so as to facilitate the light-controlling layer to focus the imaging light irradiated on different areas thereon.

[0021] In some embodiments, the dimming layer includes: a first light-control layer and a second light-control layer stacked together, and a shaped light-transmitting portion disposed between the first and second light-control layers. The first and second light-control layers have the same refractive index; the surface of the shaped light-transmitting portion closest to the display layer is curved, with the center of curvature of the curved surface located on the side of the shaped light-transmitting portion facing away from the display layer.

[0022] In the embodiment of the present disclosure, when the refractive index of the first light-control layer and the second light-control layer is the same, the transmission angle of the light can be changed by using the special-shaped light-transmitting portion arranged between the two, so that the first light-control layer and the second light-control layer can achieve different refraction effects, so as to focus the imaging light irradiated to different areas on the dimming layer.

[0023] In some embodiments, the display module further comprises: a polarizer disposed on a side of the dimming layer facing away from the display layer, and the dimming layer is attached to the polarizer.

[0024] In other embodiments, the display module further includes a color filter layer disposed on a side of the dimming layer facing away from the display layer. The color filter layer includes a black matrix pattern and color resists positioned within a plurality of openings in the black matrix pattern. The dimming layer includes a plurality of shaped lenses, each of which is bonded to the color resists.

[0025] According to another aspect of the present disclosure, a display device is provided, which includes the display module described in some of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0027] Figure 1 is a cross-sectional schematic diagram of a display module according to an embodiment of the present disclosure;

[0028] Figure 2 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0029] Figure 3 for Figure 2 A schematic structural diagram of a dimming layer in the display module shown;

[0030] Figure 4 for Figure 2 A schematic diagram of the structure of another dimming layer in the display module shown;

[0031] Figure 5 for Figure 2 A schematic structural diagram of another dimming layer in the display module shown;

[0032] Figure 6 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0033] Figure 7 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0034] Figure 8 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0035] Figure 9 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0036] Figure 10 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0037] Figure 11 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0038] Figure 12 is a cross-sectional schematic diagram of another display module according to an embodiment of the present disclosure;

[0039] Figure 13 FIG. 4 is a cross-sectional diagram of another display module according to an embodiment of the present disclosure.

[0040] The accompanying drawings in the specific implementation manner are as follows:

[0041] Array substrate 11, display layer 12, polarizer 13, cover plate 14, heat dissipation layer 15,

[0042] Fingerprint recognition sensor 16, dimming layer 17, light sensor 18, color filter layer 19;

[0043] Special-shaped lens 171, light control layer 172;

[0044] A first light-controlling layer 172A, a second light-controlling layer 172B, and a special-shaped light-transmitting portion 172C;

[0045] A first flat layer 170A, a second flat layer 170B;

[0046] Black matrix pattern 190 and color resist 191 . DETAILED DESCRIPTION

[0047] To facilitate understanding of the present disclosure, a more comprehensive description of the present disclosure will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present disclosure. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure.

[0048] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, they do not represent any order, quantity or importance, but are only used to distinguish different components. These terms are only used to distinguish one element from another.

[0049] In the description of the embodiments of the present disclosure, the orientation or positional relationship indicated by the technical term "horizontal" or the like is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the embodiments of the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present disclosure.

[0050] In addition, in order to clearly illustrate multiple layers and regions in the drawings, the thickness of each layer and each region in the drawings are exaggerated to clearly illustrate the relative positions of each layer and the distribution of each region.

[0051] In some embodiments, see Figure 1 The display device includes a display module, which includes an array substrate 11, a display layer 12, a polarizer 13, and a cover plate 14 that are stacked.

[0052] The display layer 12 is configured to emit display light. The display layer 12 includes a pixel defining layer 121 and sub-pixels 122 located in a plurality of openings of the pixel defining layer 121. The pixel defining layer 121 is used to define the formation position of the sub-pixels 122, and the opening density of the pixel defining layer 121 is expressed as the pixel density of the display device. The sub-pixels 122 include light-emitting devices, such as organic light-emitting diodes (OLEDs). Moreover, according to the color display of the display device, the plurality of sub-pixels 122 can be divided into at least three types of red sub-pixels R, green sub-pixels G, and blue sub-pixels B according to the light-emitting color. In addition, the display layer 12 also includes an encapsulation layer 123 for encapsulating each sub-pixel 122 to prevent the light-emitting devices in the sub-pixels 122 from being corroded by water and oxygen.

[0053] The array substrate 11 is provided with a pixel driving circuit for driving the sub-pixels 122 in the display layer 12 to emit light. The pixel driving circuits can be arranged in a one-to-one correspondence with the sub-pixels 122. Optionally, the display module also includes a heat dissipation layer 15 disposed on the surface of the array substrate 11 facing away from the display layer 12. The heat dissipation layer 15 can be formed of a metal with good scattering properties, such as copper foil.

[0054] It is understood that the surface of the cover plate 14 facing away from the display layer 12 is the display surface of the display module. In some display modules, a color on encapsulation (COE) layer is used instead of the polarizer 13 to filter the display light or ambient light emitted by the display layer 12, thereby reducing the thickness of the display device and improving the display quality of the display device.

[0055] Please continue reading Figure 1 When under-screen fingerprint recognition technology is adopted in a display device, the display module also includes a fingerprint recognition sensor 16. The fingerprint recognition sensor 16 is typically disposed on one side of the display layer 12, for example, on the side of the array substrate 11 facing away from the display layer 12, or integrated into the array substrate 11. However, this is not limited to this. For example, the fingerprint recognition sensor 16 can also be disposed in a non-pixel area of ​​the display layer 12 (i.e., the area between adjacent sub-pixels), as long as the fingerprint recognition sensor 16 can receive light emitted from the display layer 12 to the user's finger and reflected back by the user's finger.

[0056] Optionally, the fingerprint recognition sensor 16 is a phototransistor or a photodiode.

[0057] In some examples, such as Figure 1As shown in FIG, the fingerprint sensor 16 is disposed on the side of the array substrate 11 facing away from the display layer 12. Since a heat dissipation layer 15 is typically provided on the surface of the array substrate 11 facing away from the display layer 12, and this heat dissipation layer 15 is typically made of a metal layer, a hole is required in the portion of the heat dissipation layer 15 facing the fingerprint sensor 16 to allow light reflected from the fingerprint to pass through the hole and be transmitted to the fingerprint sensor 16.

[0058] During fingerprint recognition, when a user places their finger 2 within the fingerprint recognition area and contacts the cover 14, the light emitted from the display layer 12 to the user's finger 2 experiences different optical path differences due to reflections from the valleys and ridges of the fingerprint. This allows the fingerprint recognition sensor 16 to identify the corresponding fingerprint pattern based on the light reflected from the fingerprint, or to generate a fingerprint image based on the light reflected from the fingerprint.

[0059] It should be noted that fingerprint recognition is usually performed in a local area of ​​the display device (i.e., the fingerprint recognition area). If the fingerprint recognition area in the display device is small, it is easy to cause low fingerprint recognition efficiency and insufficient recognition accuracy. Therefore, by setting a larger number of fingerprint recognition sensors 16 in the display module, the fingerprint recognition area can be expanded. However, it will also increase the opening area in the heat dissipation layer 15, reduce the heat dissipation effect of the display module, and cause the life of the light-emitting device to decay rapidly due to high temperature, thereby causing uneven display brightness and display color deviation of the display device. Alternatively, it is also possible to consider integrating the fingerprint recognition sensor 16 into the array substrate 11 to expand the fingerprint recognition area. However, this approach will increase the layout difficulty of the pixel driving circuit and increase power consumption, resulting in increased production costs and a corresponding reduction in the standby time of the display device. In addition, the light-emitting devices located in the fingerprint recognition area are often in a high-brightness state, which can easily cause the life of the local light-emitting devices to decay faster, further causing uneven display brightness and display color deviation of the display device.

[0060] Based on this, the present disclosure provides a display module. Figure 2 The display module includes a display layer 12, a dimming layer 17, and a light sensor 18. The dimming layer 17 is disposed on one side of the display layer 12, for example, the light-emitting side of the display layer 12. The light sensor 18 is disposed on the side of the display layer 12 facing away from the dimming layer 17. The orthographic projection of the light sensor 18 on the display layer 12 is located within the orthographic projection range of the dimming layer 17 on the display layer 12. The dimming layer 17 is configured to focus imaging light onto the light sensor 18.

[0061] Here, according to the different functions of the optical sensor 18 , the corresponding imaging light to be focused is different.

[0062] For example, the optical sensor 18 is a fingerprint recognition sensor, and the imaging light is the light reflected by the fingerprint.

[0063] For example, the light sensor 18 is an image sensor, and the imaging light is ambient light.

[0064] Here, the orthographic projection of light sensor 18 on display layer 12 is located within the orthographic projection of dimming layer 17 on display layer 12. The shape and area of ​​the orthographic projection of dimming layer 17 can be determined based on the shape and area of ​​the orthographic projection of light sensor 18 or its light collection area. The light collection area of ​​light sensor 18 refers to the entire area or a portion of the orthographic projection of light sensor 18.

[0065] For example, the shape of the orthographic projection of the dimming layer 17 is similar to the shape of the orthographic projection of the light sensor 18 , and the geometric center of the orthographic projection of the dimming layer 17 and the geometric center of the orthographic projection of the light sensor 18 are located in the same plane.

[0066] For example, the area of ​​the orthographic projection of the dimming layer 17 is an integer multiple of the area of ​​the orthographic projection of the light sensor 18. For example, the area of ​​the orthographic projection of the dimming layer 17 is 3 times, 5 times, or 10 times the area of ​​the orthographic projection of the light sensor 18.

[0067] Furthermore, the dimming layer 17 focuses the imaging light onto the light sensor 18, meaning that the dimming layer 17 can focus the imaging light incident on different areas of the dimming layer 17 onto the same location, so that the imaging light from these different areas can all be effectively transmitted to the light sensor 18. In other words, the focusing point of the dimming layer 17 can be located on the light sensor 18 or at a location directly below the light sensor 18, as long as the imaging light can be effectively collected by the light sensor 18.

[0068] In the embodiment of the present disclosure, there may be one or more light sensors 18 . In the case where there are multiple light sensors 18 , the dimming layer 17 is arranged at a position that matches the distribution position design of the multiple light sensors 18 .

[0069] In addition, the display module provided by the embodiment of the present disclosure can be applicable to under-screen fingerprint recognition and under-screen camera imaging of the display device.

[0070] Optionally, the optical sensor 18 is the fingerprint recognition sensor 16. The dimming layer 17 is configured to focus the light reflected by the fingerprint to increase the area of ​​the fingerprint recognition region, thereby improving the fingerprint recognition efficiency and enhancing the user experience.

[0071] Optionally, the light sensor 18 is an image sensor. The dimming layer 17 is configured to focus ambient light to increase the area of ​​the under-screen camera receiving light, thereby improving the imaging brightness and imaging quality of the under-screen camera.

[0072] In the embodiment of the present disclosure, the dimming layer 17 is located on the side of the display layer 12 away from the light sensor 18, and can focus the imaging light irradiated on different areas thereof to the light sensor 18. In this way, when the number of light sensors 18 is the same, the dimming layer 17 can be used to increase the area where the light sensor 18 can collect imaging light. For example, when performing fingerprint recognition, the area of ​​the fingerprint recognition area can be increased, so that the fingerprint recognition can be completed without the user's finger being accurately positioned, which is conducive to improving the efficiency of fingerprint recognition and enhancing the user experience. In addition, after increasing the area of ​​the fingerprint recognition area, the light-emitting device required to emit light is different according to the different positions of the user's finger. This can also avoid the situation where a single light-emitting device has a high frequency of highlighting, and avoid the problem of rapid life decay of local light-emitting devices, thereby ensuring the uniform display brightness of the display device and eliminating or reducing the color cast phenomenon, which is conducive to ensuring the display effect of the display device after long-term use.

[0073] It should be noted that although the dimming layer 17 is used to focus the imaging light onto the light sensor 18, in the example where the dimming layer 17 is disposed on the light-emitting side of the display layer 12, the dimming layer 17 is disposed so as not to affect the display of the display module. Furthermore, the dimming layer 17 can be implemented in a variety of specific ways.

[0074] In one possible implementation, see Figures 2 to 8 The dimming layer 17 includes: a plurality of special-shaped lenses 171 arranged in an array.

[0075] It can be understood that the dimming layer 17 is configured to focus the imaging light irradiated on different areas thereof onto the light sensor 18. Therefore, the structures of the special-shaped lenses 171 located in different areas of the dimming layer 17 are different, for example, the convex surfaces of different special-shaped lenses 171 are set in different positions and / or the curvatures of the convex surfaces are different.

[0076] The above-mentioned special-shaped lens 171 includes a bottom plane S0 and a convex surface S0 located on the side of the bottom plane S0 close to the display layer 12. r That is, the bottom plane S0 of the shaped lens 171 is a plane, which facilitates the bonding or lamination of the shaped lens 171 with other layer structures such as polarizers or color filter layers. r Towards the display layer 12, and the convex surface S r The center of curvature is located on the convex surface S r The side away from the display layer 12. The imaging light is focused mainly through the convex surface S of the special-shaped lens 171. r accomplish.

[0077] In addition, in some of the above embodiments, the bottom planes S0 of the plurality of special-shaped lenses 171 are located on the same plane.

[0078] Please combine Figure 2 and Figure 3It is understood that in some embodiments, in the plurality of shaped lenses 171, optionally, the convex surface S r The angle α between the plane where the boundary of the lens 171 is located and the bottom plane S0, with the opening facing away from the light sensor 18, is positively correlated with the distance from the corresponding special-shaped lens 171 to the light sensor 18. That is, the farther the distance from the special-shaped lens 171 to the light sensor 18 is, the greater the convex surface S r The larger the angle α between the plane where the boundary is located and the bottom plane S0 and the opening away from the light sensor 18 is.

[0079] Here, the convex surface S r The plane where the boundary is located is: convex surface S r The plane where the starting point and the end point of the arc in any direction are located. The distance between the special-shaped lens 171 and the optical sensor 18 can be the distance between the two lines, or the distance component between the two in the horizontal direction.

[0080] The following Figure 3 The three special-shaped lenses 171 shown in FIG are used as an example for explanation. Figure 3 As shown in FIG, the first shaped lens 171 is located at the upper left of the light sensor 18, and its convex surface S r The boundary plane S N1 The angle between the lens 171 and S0 and the opening facing away from the light sensor 18 is α0. The second special-shaped lens 171 is located at the upper left of the light sensor 18 and is farther away from the light sensor 18 than the first special-shaped lens 171. r The boundary plane S N1 The angle between the lens 171 and S0 and the opening facing away from the light sensor 18 is α1. The third special-shaped lens 171 is located at the upper left of the light sensor 18 and is farther away from the light sensor 18 than the second special-shaped lens 171. r The boundary plane S N2 The angle between the convex surface S and S0 and the opening facing away from the optical sensor 18 is α2. It can be seen that in the direction away from the optical sensor 18 (ie, the X direction), α2>α1>α0. r By adjusting the angles α between the plane where the boundary of the dimming layer 17 is located and the bottom plane S0, the dimming layer 17 can focus the imaging light irradiated to different areas thereof.

[0081] Based on some of the above embodiments, optionally, the convex curvatures of the plurality of special-shaped lenses 171 are the same, so as to facilitate the preparation of the dimming layer 17 and simplify the preparation process of the display module.

[0082] In addition, the multiple special-shaped lenses 171 in the dimming layer 17 may also be implemented in other ways.

[0083] In some embodiments, see Figure 4and Figure 5 , the convex surface S of each shaped lens 171 r The curvature of the convex surface S in the special-shaped lens 171 is a gradual curvature. r The plane where the boundary of the lens 171 and its bottom plane S0 can be the same plane or parallel planes. r By changing the curvature of the light-adjusting layer 17, the light-adjusting layer 17 can focus the imaging light irradiated to different areas thereof.

[0084] Optional, such as Figure 4 As shown in FIG, in the direction parallel to the bottom plane S0 (ie, the horizontal direction), along the direction away from the optical sensor 18 (eg, the X direction), the convex surface S r The curvature gradually increases (for example, the curvature increases from K min Gradually increase to K max ). That is, in each special-shaped lens 171, the convex surface S r The portion farther from the light sensor 18 in the horizontal direction has a greater curvature.

[0085] On this basis, the convex surface S in different shaped lenses 171 r The structures may be the same or different.

[0086] Optional, see Figure 5 , each convex surface S r The minimum curvature K min It is positively correlated with the distance from the corresponding shaped lens 171 to the optical sensor 18. That is, the longer the distance from the shaped lens 171 to the optical sensor 18 is, the larger the convex surface S of the corresponding shaped lens 171 is. r The minimum curvature K min For example, Figure 5 As shown in FIG, along the direction away from the optical sensor 18 (ie, the X direction), K min3 >K min2 >K min1 .

[0087] Optionally, the convex surface S in the different shaped lenses 171 r The curvature gradient of the convex surface S is the same. r The curvature gradient of the convex surface S r The curvature change value corresponding to each unit area is thus conducive to achieving uniform focusing of the imaging light signal.

[0088] On this basis, please continue to refer to Figure 5 , in some examples, K min3 >K min2 >K min1 , correspondingly, K max3 >K max2 >Kmax1 .

[0089] It is worth mentioning that in some embodiments, see Figure 6 The dimming layer 17 further includes a first planar layer 170A. The first planar layer 170A has multiple openings to accommodate the shaped lenses 171 in a one-to-one correspondence and define the placement of the shaped lenses 171. Furthermore, the first planar layer 170A can be in surface contact with the display layer 17 and the polarizer 13 to enhance the adhesion of the dimming layer 17 to the display module.

[0090] Optionally, the first planar layer 170A is an organic resin layer or an optical adhesive layer.

[0091] In addition, optional Figure 7 As shown in , the fingerprint recognition area A is typically a local area within the display module, and the shaped lens 171 can be positioned within the fingerprint recognition area A. Based on this, a first flattening layer 170 is provided within the dimming layer 17. The first flattening layer 170 can also be used to fill the gap between the display layer 12 and the polarizing layer 13, thereby increasing the structural strength of the display module.

[0092] See also Figure 8 In some embodiments, the display module uses a color filter (COE) layer 19 instead of the polarizer 13, which can have a higher light transmittance to reduce the energy consumption of the display module. The color filter layer 19 includes a black matrix pattern 190 and a color filter 191 located in a plurality of openings of the black matrix pattern 190. The black matrix pattern 190 is formed of a light-absorbing material (BM), and the color filter 191 is formed of a color light-transmitting material. In addition, the color filter 191 is located one-to-one above the sub-pixel 122, and the color of the color filter 191 is the same as the light output color of the corresponding sub-pixel 122. The multiple special-shaped lenses 171 in the dimming layer 17 can be attached to the color filter 191 in a one-to-one correspondence.

[0093] It can be understood that the dimming layer 17 is located on the light-emitting side of the display layer 12. In examples where there are other layer structures between the polarizing layer 13 and the display layer 12 or between the color filter layer 19 and the display layer 12, the dimming layer 17 can also be adhered to the aforementioned other layer structures.

[0094] In another possible implementation, see Figure 9 The dimming layer 17 includes at least one stacked light control layer 172 . The surface of at least one light control layer 172 close to the display layer 12 is a curved surface, and the center of curvature of the curved surface is located on the side of the light control layer 172 away from the display layer 12 .

[0095] Here, the number of light-control layers 172 can be selected according to actual needs. In addition, the surface of one or more light-control layers 172 close to the display layer 12 can be set as a curved surface, so as to utilize the surface shape and refractive index of each light-control layer 172 to focus the imaging light incident thereon.

[0096] Optionally, the light-adjusting layer 17 includes at least two stacked light-controlling layers 172, and the refractive indices of different light-controlling layers 172 may be different. In this way, the imaging light can be focused by sequentially refraction of the imaging light by the multiple light-controlling layers 172.

[0097] Optionally, the refractive index of the light-controlling layer 172 gradually increases in the direction approaching the display layer 12 in the thickness direction.

[0098] For example, see Figure 9 In the thickness direction along the direction close to the display layer 12 (ie, the Y direction), the refractive index n2 of the light control layer 172 close to the display layer 12 is greater than the refractive index n1 of the light control layer 172 away from the display layer.

[0099] Additionally, optionally, see Figure 10 and Figure 11 , one of the light-control layers 172 has a curved surface near the display layer 12, and the center of curvature of the curved surface is located on the side of the corresponding light-control layer 172 facing away from the display layer 12. Thus, by configuring the surface shape of any light-control layer 172, the embodiment of the present disclosure can further utilize the different refractive indices of different light-control layers 172 to superimpose the changes in light transmission angle caused by the curved surface, thereby facilitating the light-adjusting layer 17 to focus imaging light incident on different areas of the light-control layer.

[0100] In another possible implementation, the refractive indices of different light-controlling layers 172 may also be the same.

[0101] For examples, see Figure 12 The dimming layer 17 includes a first light-controlling layer 172A and a second light-controlling layer 172B stacked together. The second light-controlling layer 172B is located between the first light-controlling layer 172A and the display layer 12. The first light-controlling layer 172A and the second light-controlling layer 172B have the same refractive index n.

[0102] Please continue reading Figure 12 The dimming layer 17 further includes a shaped light-transmitting portion 172C disposed between the first light-controlling layer 172A and the second light-controlling layer 172B. The surface of the shaped light-transmitting portion 172C close to the display layer 12 is a curved surface, and the center of curvature of the curved surface is located on the side of the shaped light-transmitting portion 172C facing away from the display layer 12.

[0103] Here, the irregular light-transmitting portion 172C can be formed of a material with a relatively high light transmittance. In other words, the refractive index of the irregular light-transmitting portion 172C is extremely low, and it is not easy to refract the transmission of light.

[0104] In the embodiment of the present disclosure, when the refractive index of the first light-control layer 172A and the second light-control layer 172B is the same, the transmission angle of the light can be changed by using the special-shaped light-transmitting portion 172C arranged between the two, so that the first light-control layer 172A and the second light-control layer 172B can achieve different refraction effects, so as to focus the imaging light irradiated to different areas on the dimming layer 17.

[0105] It should be added that, in some embodiments, please refer to Figure 13 The surface of the outermost light-control layer 172 near the display layer 12 is non-planar. To address this, the dimming layer 17 further includes a second flattening layer 170B. The second flattening layer 170B covers the outermost light-control layer 172, ensuring a flat surface of the dimming layer 17 near the display layer 12. This ensures good surface contact between the dimming layer 17 and the display layer 12 or other layer structures, enhancing the bonding effect of the dimming layer 17 within the display module and increasing the structural strength of the display module.

[0106] Optionally, the second planar layer 170B is an organic resin layer or an optical adhesive layer.

[0107] According to another aspect of the present disclosure, a display device is provided. The display device includes the display module described in some of the above embodiments. The beneficial effects achieved by the display device provided in some embodiments of the present disclosure are the same as the beneficial effects achieved by the display module provided in some of the above embodiments, and are not further described here.

[0108] The display devices provided in some embodiments of the present disclosure may be any device used in the field of displaying images, whether in motion (e.g., video) or fixed (e.g., still images), and whether textual or pictorial. More specifically, it is contemplated that the embodiments described may be implemented in a variety of display devices.

[0109] The display devices provided in some embodiments of the present disclosure include but are not limited to mobile phones, wireless devices, personal data assistants (Portable Android Device, abbreviated as PAD), handheld or portable computers, GPS (Global Positioning System) receivers / navigators, cameras, MP4 (full name MPEG-4 Part 14) video players, camcorders, television monitors, flat-panel displays, computer monitors, aesthetic structures (for example, for displays showing an image of a piece of jewelry), etc.

[0110] In the case of using “including,” “having,” and “comprising” described herein, another component may be added unless a clear limiting term such as “only,” “consisting of,” etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as having one number.

[0111] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0112] The above-described embodiments merely represent several implementation methods of the present disclosure. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art could make various modifications and improvements without departing from the spirit of the present disclosure, all of which fall within the scope of protection of the present disclosure. Therefore, the scope of protection of the present patent shall be determined by the appended claims.

Claims

1. A display module, characterized in that: include: Display layer; a dimming layer, disposed on one side of the display layer; A light sensor is provided on a side of the display layer facing away from the dimming layer; The orthographic projection of the light sensor on the display layer is located within the orthographic projection range of the dimming layer on the display layer; the dimming layer is configured to focus imaging light onto the light sensor; The dimming layer includes: a plurality of special-shaped lenses arranged in an array; the special-shaped lenses include a bottom plane and a convex surface located on the side of the bottom plane close to the display layer; wherein the angle between the plane where the boundary of the convex surface is located and the bottom plane, with the opening facing away from the light sensor, is positively correlated with the distance from the corresponding special-shaped lens to the light sensor.

2. The display module according to claim 1, wherein: The bottom planes of the plurality of special-shaped lenses are located on the same plane.

3. The display module according to claim 1, wherein: The convex surfaces of the plurality of special-shaped lenses have the same curvature.

4. The display module according to claim 1, wherein: The curvature of the convex surface is a gradual curvature.

5. The display module according to claim 4, wherein: In a direction parallel to the bottom plane and in a direction away from the light sensor, the curvature of the convex surface gradually increases.

6. The display module according to claim 4, wherein: The minimum curvature of each convex surface is positively correlated with the distance from the corresponding special-shaped lens to the light sensor.

7. The display module according to claim 4, wherein: The curvature change gradients of the convex surfaces in different special-shaped lenses are the same.

8. The display module according to claim 1, wherein: The display module further includes: a polarizer, disposed on a side of the dimming layer away from the display layer; the dimming layer is attached to the polarizer; Alternatively, the color filter layer is arranged on the side of the dimming layer away from the display layer; the color filter layer includes a black matrix pattern and color resists located in multiple openings of the black matrix pattern; the special-shaped lenses are correspondingly attached to the color resists.

9. A display device, characterized in that: The display module comprises the display module according to any one of claims 1 to 8.

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