Display module and display device

Abstract

A display module and a display device. The display module comprises a display area (100) and a bezel area (101), wherein the bezel area (101) surrounds the periphery of at least one side of the display area (100). The display module further comprises a display panel (1) and a cover plate (2), wherein the cover plate (2) covers a display side of the display panel (1). The display panel (1) comprises black matrices (121), and openings (K) are formed in a black matrix (121) of the bezel area (101). The cover plate (2) comprises a substrate (21) and a light-shielding layer (22), wherein the light-shielding layer (22) is located on the side of the substrate (21) close to the display panel (1), the light-shielding layer (22) is located in the bezel area (101), the light-shielding layer (22) at least surrounds the edge of the display area (100) on the side where the openings (K) are located, the light-shielding layer (22) is located on the side of the orthographic projection of each opening (K) on the substrate (21) away from the display area (100), the orthographic projections of the opening (K) and the light-shielding layer (22) on the substrate (21) do not overlap, the light-shielding layer (22) is provided with a notch (220) at the position corresponding to the openings (K), and the notch (220) is a recess in a direction moving away from the display area (100).

Description

Display module and display device TECHNICAL FIELD

[0001] The embodiments of the present disclosure belong to the technical field of display, and particularly relate to a display module and a display device. BACKGROUND

[0002] Liquid Crystal Display (LCD) is widely favored at present due to its low power consumption, small size, low radiation, low cost, long service life and other characteristics. SUMMARY

[0003] In a first aspect, the embodiments of the present disclosure provide a display module, comprising a display area and a frame area, the frame area surrounds at least one side of the periphery of the display area,

[0004] The display module further comprises a display panel and a cover plate, the cover plate covers the display side of the display panel,

[0005] The display panel comprises a black matrix, and an opening is formed in the black matrix of the frame area;

[0006] The cover plate comprises a substrate and a light shielding layer, the light shielding layer is located on the side of the substrate close to the display panel,

[0007] The light shielding layer is located in the frame area, and the light shielding layer at least surrounds the edge of the display area on the side where the opening is located,

[0008] The light shielding layer is located on the side of the opening away from the display area on the substrate, and the opening and the light shielding layer on the substrate do not overlap,

[0009] The light shielding layer has a notch at a position corresponding to the opening, and the notch is a recess away from the display area.

[0010] In some embodiments, the cover plate further comprises a partial light transmission layer located in the frame area, and the partial light transmission layer on the substrate is located on the side of the opening on the substrate close to the projection of the notch on the substrate,

[0011] The partial light transmission layer on the substrate at least covers the part of the projection of the notch on the substrate away from the display area,

[0012] The partial light transmission layer and the projection of the opening on the substrate do not overlap.

[0013] In some embodiments, the display panel further comprises a second substrate,

[0014] The second substrate comprises a second base and a first film layer, and the first film layer is located in the frame area;

[0015] The first film layer is located on a side of the second base close to the cover plate;

[0016] The black matrix is located on a side of the second base away from the cover plate;

[0017] The first film layer is located on a side of the second base close to the cover plate;

[0018] The first film layer is located on a side of the second base close to the cover plate;

[0019] The first film layer is located on a side of the second base close to the cover plate;

[0020] In some embodiments, the first film layer adopts a partially light-transmissive material,

[0021] The first film layer is located on a side of the second base close to the cover plate;

[0022] In some embodiments, the first film layer adopts a non-light-transmissive material,

[0023] The first film layer is located on a side of the second base close to the cover plate;

[0024] The first film layer is located on a side of the second base close to the cover plate;

[0025] The first film layer is located on a side of the second base close to the cover plate;

[0026] In some embodiments, the display panel further comprises a first substrate and a second substrate, and the first substrate and the second substrate are attached to each other;

[0027] The cover plate is located on a side of the second substrate away from the first substrate,

[0028] The first substrate comprises a first base and a light-sensing structure,

[0029] The light-sensing structure is located on a side of the first base close to the second substrate, and an effective light-sensing area of the light-sensing structure is located in the frame area,

[0030] The second substrate comprises a second base,

[0031] The black matrix is located on a side of the second substrate close to the first substrate.

[0032] The opening on the first substrate covers the effective photosensitive area of the photosensitive structure on the first substrate.

[0033] In some embodiments, the distance between the side edge of the notch away from the display area and the side edge of the opening away from the display area on the substrate ranges from 0.2 to 0.5 mm.

[0034] In some embodiments, the distance between the edge of the notch close to the display area and the edge of the opening closest to it on the substrate ranges from 0.2 to 0.5 mm.

[0035] In some embodiments, the distance between the side edge of the partially light-transmissive layer close to the display area and the side edge of the opening away from the display area on the substrate ranges from 0.13 to 0.15 mm.

[0036] The width of the portion of the partially light-transmissive layer within the notch in the direction away from the display area ranges from 0.05 to 0.37 mm.

[0037] In some embodiments, the projection of the partially light-transmissive layer on the substrate covers the notch, and the width of the overlapping area between the projection of the partially light-transmissive layer on the substrate and the projection of the light-blocking layer around the edge of the notch is greater than or equal to 0.3 mm.

[0038] In some embodiments, the display panel further comprises a first substrate, and the first substrate and the second substrate are attached together.

[0039] The cover plate is located on a side of the second substrate away from the first substrate,

[0040] The first substrate comprises a first substrate and a photosensitive structure,

[0041] The photosensitive structure is located on a side of the first substrate close to the second substrate, and the effective photosensitive area of the photosensitive structure is located in the frame area.

[0042] The black matrix is located on a side of the second substrate close to the first substrate.

[0043] The opening on the first substrate covers the effective photosensitive area of the photosensitive structure on the first substrate.

[0044] The side boundary of the first film layer close to the display area coincides with the side boundary of the opening away from the display area on the substrate.

[0045] In some embodiments, the orthographic projection of the first film layer on the substrate covers the gap, and the width of the overlapping area between the orthographic projection of the first film layer on the substrate and the orthographic projection of the light-shielding layer around the edge of the gap is greater than or equal to 0.13 mm.

[0046] In some embodiments, the light transmittance of the partially light-transmissive layer ranges from 65% to 85%.

[0047] In some embodiments, the second substrate further comprises color resist,

[0048] The color resist is located on the side of the black matrix close to the first substrate,

[0049] The orthographic projection of the color resist in the frame area on the second substrate covers the orthographic projection of the opening on the second substrate.

[0050] In some embodiments, the light-sensing structure comprises a plurality of light-sensing units;

[0051] One light-sensing unit corresponds to one opening, and the plurality of light-sensing units correspond to a plurality of different openings.

[0052] The distance between adjacent edges of adjacent openings ranges from 10 μm or more.

[0053] In some embodiments, one light-sensing unit corresponds to one color of color resist, and the plurality of light-sensing units correspond to color resist of different colors.

[0054] The color resist comprises red color resist, blue color resist, and green color resist,

[0055] The red color resist, the blue color resist, and the green color resist are arranged in sequence along the extension direction of the display area boundary line corresponding to the frame area on the side thereof.

[0056] The light-sensing unit corresponding to the red color resist, the light-sensing unit corresponding to the blue color resist, and the light-sensing unit corresponding to the green color resist are arranged in sequence along the extension direction of the display area boundary line corresponding to the frame area on the side thereof.

[0057] In some embodiments, the first substrate further comprises at least one dummy light-sensing unit located in the frame area and on the side of the first substrate close to the second substrate,

[0058] The at least one dummy light-sensing unit, the light-sensing unit corresponding to the red color resist, the light-sensing unit corresponding to the blue color resist, and the light-sensing unit corresponding to the green color resist are arranged in sequence along the extension direction of the display area boundary line corresponding to the frame area on the side thereof.

[0059] The orthographic projection of the black matrix on the first substrate covers the effective light sensing area of the dummy light sensing unit, and the orthographic projection of the color resist and the effective light sensing area of the dummy light sensing unit on the first substrate does not overlap.

[0060] In some embodiments, the orthographic projection of the effective light sensing area of the dummy light sensing unit and the light shielding layer on the substrate at least partially overlaps;

[0061] Alternatively, the orthographic projection of the effective light sensing area of the dummy light sensing unit and the light shielding layer on the substrate does not overlap.

[0062] In some embodiments, the notch is mirror-symmetrical with the center line of the frame area on the side where the notch is located as the axis of symmetry;

[0063] The center line is perpendicular to the length direction of the frame area on the side where the notch is located.

[0064] In some embodiments, the light sensing unit includes a plurality of first light sensing transistors, which are arranged in sequence along the extension direction of the display area boundary line corresponding to the frame area on the side where the light sensing unit is located,

[0065] The dummy light sensing unit includes a plurality of second light sensing transistors, which are arranged in sequence along the extension direction of the display area boundary line corresponding to the frame area on the side where the dummy light sensing unit is located;

[0066] The gate of the first light sensing transistor and the gate of the second light sensing transistor are electrically connected to a first signal line,

[0067] The first electrode of the first light sensing transistor and the first electrode of the second light sensing transistor are electrically connected to a second signal line,

[0068] The second electrode of the first light sensing transistor in the light sensing unit corresponding to the red color resist is electrically connected to a third signal line;

[0069] The second electrode of the first light sensing transistor in the light sensing unit corresponding to the blue color resist is electrically connected to a fourth signal line;

[0070] The second electrode of the first light sensing transistor in the light sensing unit corresponding to the green color resist is electrically connected to a fifth signal line;

[0071] The second electrode of the second light sensing transistor is electrically connected to a sixth signal line.

[0072] In a second aspect, the embodiments of the present disclosure provide a display module, which includes a display area and a frame area, the frame area surrounds at least one side periphery of the display area,

[0073] The display module further comprises a display panel and a cover plate, the cover plate covers the display side of the display panel,

[0074] The display panel comprises a light-sensing structure, and an effective light-sensing area of the light-sensing structure is located in the frame area,

[0075] The cover plate comprises a substrate and a light-shielding layer, and the light-shielding layer is located on the side of the substrate close to the display panel,

[0076] The light-shielding layer is located in the frame area, and the light-shielding layer at least surrounds the edge of the display area on the side where the light-sensing structure is located,

[0077] The light-shielding layer is located on the side of the substrate away from the display area in the orthographic projection of the effective light-sensing area of the light-sensing structure, and the effective light-sensing area of the light-sensing structure and the orthographic projection of the light-shielding layer on the substrate do not overlap,

[0078] The light-shielding layer has a notch at a position corresponding to the effective light-sensing area of the light-sensing structure, and the notch is a recess away from the display area.

[0079] In some embodiments, the light-sensing structure comprises a plurality of light-sensing units;

[0080] The plurality of light-sensing units are arranged in sequence along the extension direction of the display area boundary line corresponding to the frame area on the side where the light-sensing units are located;

[0081] The plurality of light-sensing units are located at the middle position or the end position of the display area boundary line on the side where the light-sensing units are located.

[0082] In some embodiments, the shape of the middle part of the display area boundary line corresponding to the frame area on the side where the light-sensing units are located comprises a straight line, a semicircular arc line or a parabolic line,

[0083] The plurality of light-sensing units are located at the middle position or the end position of the middle part of the display area boundary line on the side where the light-sensing units are located.

[0084] In some embodiments, the frame area comprises a binding side frame area and a first side frame area, and the binding side frame area and the first side frame area are oppositely arranged;

[0085] The light-sensing structure is located in the first side frame area;

[0086] The display module further comprises a dummy load circuit, an electrostatic discharge circuit and a reference voltage circuit, and at least the dummy load circuit, the electrostatic discharge circuit, the light-sensing structure and the reference voltage circuit are located in the first side frame area,

[0087] The dummy load circuit, the electrostatic discharge circuit, the light-sensing structure and the reference voltage circuit are arranged in sequence in the direction away from the display area.

[0088] In a third aspect, the embodiments of the present disclosure provide a display device, comprising the display module.

[0089] The display module provided in the embodiments of the present disclosure can, on the one hand, make the light-shielding layer avoid the effective photosensitive area of the photosensitive structure, avoid the light-shielding layer from shielding the effective photosensitive area of the photosensitive structure due to the manufacturing tolerance and the cover bonding tolerance, and thus ensure that the effective photosensitive area of the photosensitive structure can normally sense external light (such as ambient light); on the other hand, the light-shielding layer will not substantially affect the overall visual effect of the display module, such as not substantially affecting the integrated black effect of the display module when the screen is off; on the other hand, the light-shielding layer will not shield the incident light with a large incident angle (such as the incident light with an incident angle in the range of ±30° to ±80°) that irradiates the effective photosensitive area of the photosensitive structure, so as not to affect the reception of the incident light with a large angle by the effective photosensitive area of the photosensitive structure, and thus ensure that the sensing curve of the effective photosensitive area of the photosensitive structure to the incident light within a large angle range changes smoothly with the incident angle.

[0090] The display device provided in the embodiments of the present disclosure can not only ensure the normal sensing of the effective photosensitive area of the photosensitive structure to external light, but also ensure the overall visual effect of the display device, and further ensure that the sensing curve of the effective photosensitive area of the photosensitive structure to the incident light within a large angle range changes smoothly with the incident angle. BRIEF DESCRIPTION OF DRAWINGS

[0091] The accompanying drawings are included to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification, which are used to explain the present disclosure together with the embodiments of the present disclosure, and do not constitute a limitation of the present disclosure. The above and other features and advantages will become more apparent to those skilled in the art from the detailed description of the specific embodiments with reference to the accompanying drawings, in which:

[0092] FIG. 1 is a schematic diagram of the circuit arrangement of the first side frame area and the binding side frame area of the liquid crystal display screen in the related art.

[0093] FIG. 2a is a schematic diagram of the shielding test of the ink to the large-angle light incident to the photosensitive sensor in the related art.

[0094] FIG. 2b is a schematic diagram of the vertical rotation of the display screen in the shielding test of the ink to the large-angle light incident to the photosensitive sensor in the related art.

[0095] FIG. 2c is a schematic diagram of the horizontal rotation of the display screen in the shielding test of the ink to the large-angle light incident to the photosensitive sensor in the related art.

[0096] FIG. 3 is a curve graph of the change of the illuminance value of the photosensitive sensor test with the change of the horizontal and vertical rotation angles of the display screen in the related art.

[0097] Fig. 4a is a top view of a side frame area where a light-sensing structure of a display module is located according to an embodiment of the present disclosure.

[0098] Fig. 4b is an enlarged top view of the position where the light-sensing structure is located in Fig. 4a.

[0099] Fig. 4c is a structural sectional view along the AA' section line in Fig. 4b.

[0100] Fig. 4d is a top view of the structure at the position where the light-sensing structure is located according to an embodiment of the present disclosure.

[0101] Fig. 4e is a schematic diagram of a calculation principle of a distance at which a light-blocking layer avoids the light-sensing structure according to an embodiment of the present disclosure.

[0102] Fig. 5a is a top view of a side frame area where a light-sensing structure of another display module is located according to an embodiment of the present disclosure.

[0103] Fig. 5b is an enlarged top view of the position where the light-sensing structure is located in Fig. 5a.

[0104] Fig. 5c is a structural sectional view along the BB' section line in Fig. 5b.

[0105] Fig. 6a is a curve diagram of the change of the light-sensing luminance of the light-sensing structure of the display module with the change of the incident angle of the incident light according to Fig. 4c.

[0106] Fig. 6b is a curve diagram of the change of the light-sensing luminance of the light-sensing structure of the display module with the change of the incident angle of the incident light according to Fig. 5c.

[0107] Fig. 7a is a top view of a side frame area where a light-sensing structure of still another display module is located according to an embodiment of the present disclosure.

[0108] Fig. 7b is a structural sectional view along the CC' section line in Fig. 7a.

[0109] Fig. 7c is a top view of a side frame area where a light-sensing structure of yet another display module is located according to an embodiment of the present disclosure.

[0110] Fig. 7d is a structural sectional view along the DD' section line in Fig. 7c.

[0111] Fig. 8a is a schematic diagram of the distribution of a light-sensing structure in a side frame area where the light-sensing structure is located according to an embodiment of the present disclosure.

[0112] Fig. 8b is another schematic diagram of the distribution of a light-sensing structure in a side frame area where the light-sensing structure is located according to an embodiment of the present disclosure.

[0113] Fig. 8c is still another schematic diagram of the distribution of a light-sensing structure in a side frame area where the light-sensing structure is located according to an embodiment of the present disclosure.

[0114] FIG. 8d is another distribution diagram of the light sensing structure in the side bezel area where the light sensing structure is located according to an embodiment of the present disclosure.

[0115] FIG. 8e is another distribution diagram of the light sensing structure in the side bezel area where the light sensing structure is located according to an embodiment of the present disclosure.

[0116] FIG. 8f is another distribution diagram of the light sensing structure in the side bezel area where the light sensing structure is located according to an embodiment of the present disclosure.

[0117] FIG. 9a is a top view of a light sensing unit according to an embodiment of the present disclosure.

[0118] FIG. 9b is a structure sectional view of a first light sensing transistor and a second light sensing transistor along a FF' cutting line in FIG. 9a according to an embodiment of the present disclosure.

[0119] FIG. 9c is a circuit connection diagram of a light sensing unit and a dummy light sensing unit according to an embodiment of the present disclosure.

[0120] FIG. 10 is a distribution diagram of a binding side bezel area, a first side bezel area and a circuit therein of a display module according to an embodiment of the present disclosure.

[0121] FIG. 11a is an enlarged top view of a position where a light sensing structure of another display module is located according to an embodiment of the present disclosure.

[0122] FIG. 11b is a structure sectional view along an EE' cutting line in FIG. 11a. DETAILED DESCRIPTION

[0123] In order for those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, a display module and a display device provided by the embodiments of the present disclosure are further described in detail below with reference to the drawings and specific embodiments.

[0124] The embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the present disclosure can be embodied in different forms; and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0125] The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of configurations formed based on manufacturing processes. Therefore, the regions exemplified in the drawings have a schematic property, and the shape of the regions shown in the drawings exemplifies a specific shape of the regions, but is not intended to be restrictive.

[0126] At present, low-cost display products have become the mainstream demand of various terminals, and the integration of functions can reduce the hardware devices in the display products, thereby achieving the purpose of cost saving. Based on this, in the related art, a light sensing detection device is integrated in a liquid crystal display product to realize the light sensing detection function of the liquid crystal display product. According to the light sensing detection result, the liquid crystal display product can flexibly adjust the display brightness and contrast ratio and other parameters of the screen, thereby improving the display effect of the liquid crystal display product in different application scenarios and light environments.

[0127] In the related art, referring to FIG. 1, for HD (High Definition, resolution is 720P and above) liquid crystal display screen and fHD (Fine High Definition, resolution is 900P) liquid crystal display screen, it includes a liquid crystal cell formed by an array substrate (TFT) and a color film substrate (CF) and a cover plate covering the display side of the liquid crystal cell, the cover plate includes a substrate and an ink formed on the side of the substrate close to the liquid crystal cell, the ink is located at the four peripheral edges of the substrate, and the ink is used to shield the four frame areas of the liquid crystal display screen. The light sensing sensor (photosensitive sensor) is integrated in the liquid crystal display screen, the light sensing sensor adopts amorphous silicon thin film transistor (a-Si TFT), is usually integrated in the first side frame area (DPO side frame) of the liquid crystal display screen, and is integrated in the array substrate (TFT). The first side frame area (DPO side frame) is a side frame area arranged opposite to the binding side frame area (DP side frame) of the liquid crystal display screen. The driving chip (COG) and the flexible circuit (FPC) are integrated in the binding side frame area (DP side frame) of the liquid crystal display screen.

[0128] Referring to FIG. 1, in the second scheme, the electrostatic discharge circuit (ESD) for discharging static electricity of the light sensor is arranged in the binding side frame area (i.e., the DP side frame), which makes the width of the binding side frame area (i.e., the DP side frame) larger (e.g., 3.49 mm), and cannot ensure the production level of the HD and fHD liquid crystal display. In order to reduce the width of the binding side frame area (i.e., the DP side frame) to ensure the production level of the HD and fHD liquid crystal display (e.g., the width of the binding side frame area ensuring the production level is 3.4 mm), the arrangement in the first scheme needs to be adopted, i.e., the electrostatic discharge circuit (ESD) for discharging static electricity of the light sensor is arranged in the first side frame area (i.e., the DPO side frame) (which can reduce the width of the binding side frame area by 0.09 mm). At the same time, the first side frame area is also provided with a dummy load circuit (Dummy load) and a reference voltage circuit (Vcom). The dummy load circuit is a circuit for stabilizing the output of the GOA (Gare Driver On Array, scan driving circuit), including resistors, capacitors and other components. The dummy load circuit is a circuit that can absorb power without producing actual physical effects. The reference voltage circuit is used to provide a reference voltage signal to shield the surrounding liquid crystal electric field. The dummy load circuit (Dummy load), the electrostatic discharge circuit (ESD) and the reference voltage circuit (Vcom) are all arranged in the array substrate (TFT). As can be seen from FIG. 1, in the first side frame area, the dummy load circuit (Dummy load), the electrostatic discharge circuit (ESD), the light sensor (light sensor) and the reference voltage circuit (Vcom) are arranged in sequence in the direction away from the display area (AA), which makes the light sensor farther away from the display area (AA) (e.g., the light sensor is about 0.24 mm away from the display area). Since there is a manufacturing tolerance in the preparation of the ink (usually prepared by screen printing), and there is a fitting tolerance in the fitting of the cover plate forming the ink to the liquid crystal box, when the light sensor is farther away from the display area (AA), it is relatively closer to the ink, so the ink is easy to block the light sensor, and therefore the ink needs to avoid the light sensor. At the same time, if the ink is too far away from the display area in order to avoid the light sensor, the area of the ink covering the frame area is relatively small, which will affect the overall visual effect of the display screen, such as the poor one-piece black effect of the display screen when it is off.

[0129] In addition, the ink needs to be considered to shield the large-angle incident light rays incident to the light sensor. The incident angle range of the large-angle incident light rays is ±30° to ±80°. In the related art, the ink shielding the large-angle incident light rays incident to the light sensor is tested with reference to FIGS. 2a, 2b and 2c. The liquid crystal display 10 is fixed on a jig that can be rotated up, down, left and right. The display 10 is irradiated with a parallel light source 13, and the illuminance value of the light sensor test is recorded when the display 10 is transversely (X+ or X-) or vertically (Y+ or Y-) rotated to different angles when the light source 13 is vertically irradiated. The vertical (Y+ or Y-) rotation of the display 10 means that the first side frame area (the side frame area where the light sensor is located) and the binding side frame area (the side frame area opposite to the first side frame area) of the display are moved in the Y+ and Y- directions, respectively. The transverse (X+ or X-) rotation of the display 10 means that the opposite two side frame areas of the display where the light sensor is not arranged are moved in the X+ and X- directions, respectively. With reference to FIG. 3, when the screen is rotated 35° in the Y- direction, the illuminance value of the light sensor test sharply decreases. When the screen is rotated in the Y+ direction, there is no sharp change in the illuminance value, but the illuminance value changes gently with the increase of the incident angle. The reason is that when the screen is rotated 35° in the Y- direction, the ink shields the incident light with a large incident angle, affecting the reception of the light sensor to the light with a large incident angle.

[0130] How to make the illuminance curve of the light sensor test in the large incident angle range smoothly transition with the change of the incident angle is also a problem to be solved.

[0131] To solve the above problems in the disclosed technology, in a first aspect, the embodiments of the present disclosure provide a display module, with reference to FIGS. 4a, 4b and 4c, which comprises a display area 100 and a frame area 101 surrounding at least one side of the periphery of the display area 100. The display module further comprises a display panel 1 and a cover plate 2 covering the display side of the display panel 1. The display panel 1 comprises a black matrix 121, and an opening K is formed in the black matrix 121 of the frame area 101. The cover plate 2 comprises a substrate 21 and a light shielding layer 22 located on the side of the substrate 21 close to the display panel 1. The light shielding layer 22 is located in the frame area 101, and the light shielding layer 22 surrounds at least the edge of the display area 100 on the side where the opening K is located. The light shielding layer 22 is located on the side away from the display area 100 of the orthographic projection of the opening K on the substrate 21. The orthographic projection of the opening K and the light shielding layer 22 on the substrate 21 does not overlap. The light shielding layer 22 has a notch 220 at the position corresponding to the opening K, and the notch 220 is a recess away from the display area 100.

[0132] In a second aspect, the display module is provided, as shown in FIGS. 4a, 4b and 4c. The display module includes a display area 100 and a frame area 101 surrounding at least one side of the display area 100. The display module further includes a display panel 1 and a cover plate 2 covering the display side of the display panel 1. The display panel 1 includes a light-sensing structure 3, and the effective light-sensing area of the light-sensing structure 3 is located in the frame area 101. The cover plate 2 includes a substrate 21 and a light-shielding layer 22 located on the side of the substrate 21 close to the display panel 1. The light-shielding layer 22 is located in the frame area 101 and surrounds at least the edge of the display area 100 on the side where the light-sensing structure 3 is located. The light-shielding layer 22 is located on the side of the projection of the effective light-sensing area of the light-sensing structure 3 on the substrate 21 away from the display area 100. The projection of the effective light-sensing area of the light-sensing structure 3 on the substrate 21 and the light-shielding layer 22 do not overlap. The light-shielding layer 22 has a gap 220 at the position corresponding to the effective light-sensing area of the light-sensing structure 3, and the gap 220 is a recess away from the display area 100.

[0133] In some embodiments, the display panel 1 further includes a first substrate 11 and a second substrate 12, and the first substrate 11 and the second substrate 12 are attached together. The cover plate 2 is located on the side of the second substrate 12 away from the first substrate 11. The first substrate 11 includes a first base 110 and the light-sensing structure 3 located on the side of the first base 110 close to the second substrate 12, and the effective light-sensing area of the light-sensing structure 3 is located in the frame area 101. The second substrate 12 includes a second base 120, and a black matrix 121 is located on the side of the second base 120 close to the first substrate 11. The projection of the opening K on the first base 110 covers the projection of the effective light-sensing area of the light-sensing structure 3 on the first base 110.

[0134] The effective light-sensing area of the light-sensing structure 3 can sense the external ambient light and convert the sensed external ambient light into an electrical signal to provide to the display module. The display module adjusts its display brightness and contrast and other parameters according to the strength of the external ambient light, thereby improving the display effect of the display module in different application scenarios and light environments. In this embodiment, the effective light-sensing area of the light-sensing structure 3 is exposed at the opening K, so the area of the opening K can be determined as the effective light-sensing area.

[0135] The light-sensing structure 3 can be a light-sensing thin film transistor. The light-shielding layer 22 can be ink, which can shield the frame area 101 of the display module, thereby improving the visual effect of the appearance of the display module, such as the one-piece black effect of the display module when it is turned off. It should be noted that as long as the projection of the effective light-sensing area of the light-sensing structure 3 on the substrate 21 and the light-shielding layer 22 do not overlap, such as the channel region of the light-sensing thin film transistor being the effective light-sensing area, as long as the projection of the channel region of the light-sensing thin film transistor on the substrate 21 and the light-shielding layer 22 do not overlap.

[0136] In this embodiment, by making the light-shielding layer 22 recessed in the direction away from the display area 100 at the position corresponding to the opening K to form the gap 220, on the one hand, the effective light-sensing area of the light-sensing structure 3 can be avoided from being shielded by the light-shielding layer 22 due to the preparation tolerance and the lamination tolerance of the cover plate 2, so as to ensure that the effective light-sensing area of the light-sensing structure 3 can normally sense the external light (such as ambient light); on the other hand, the light-shielding layer 22 is locally recessed to form the gap 220 at the position corresponding to the opening K, which basically will not affect the overall visual effect of the display module, such as the integral black effect of the display module when the screen is off; on the other hand, the light-shielding layer 22 will not shield the incident light with a large incident angle (such as the incident light with an incident angle in the range of ±30° to ±80°) that irradiates the effective light-sensing area of the light-sensing structure 3, so as to not affect the reception of the incident light with a large incident angle by the effective light-sensing area of the light-sensing structure 3, and thus the sensing curve of the effective light-sensing area of the light-sensing structure 3 to the incident light with a large incident angle range can smoothly transition with the change of the incident angle.

[0137] In some embodiments, referring to FIGS. 4c and 4d, the display module further includes an optically transparent adhesive layer 4 located between the cover plate 2 and the display panel 1; the first substrate 11 further includes a first polarizer 111, the first polarizer 111 is located on the side of the first base 110 away from the second substrate 12, and the first polarizer 111 extends from the display area 100 to the frame area 101; the second substrate 12 further includes a color resistance 122 and a second polarizer 123, the black matrix 121 and the color resistance 122 are sequentially stacked on the side of the second base 120 close to the first substrate 11, and the black matrix 121 and the color resistance 122 are located in the display area 100 and the frame area 101; the second polarizer 123 is located on the side of the second base 120 away from the first substrate 11; the color resistance 122 of the frame area 101 is orthographically projected on the second base 120 to cover the orthographic projection of the opening K on the second base 120.

[0138] In some embodiments, referring to FIG. 4c, the first substrate 11 and the second substrate 12 are boxed by the sealant 5 after four weeks of edge. The first substrate 11 and the second substrate 12 are boxed to form a cell gap, and the cell gap is filled with liquid crystal 6. The display module further includes a backlight module 14 located on the side of the display panel 1 away from the cover plate 2 for providing backlight for the display of the display panel 1.

[0139] In some embodiments, the black matrix 121 located in the display area 100 and the black matrix 121 located in the frame area 101 are prepared by one preparation process, and the color resistance 122 located in the display area 100 and the color resistance 122 located in the frame area 101 are prepared by one preparation process.

[0140] In some embodiments, the distance M between the side edge of the notch 220 away from the display area 100 and the side edge of the opening K away from the display area 100 in the orthographic projection on the substrate 21 ranges from 0.2 mm to 0.5 mm.

[0141] In some embodiments, referring to FIG. 4e, the manufacturing tolerance of the light-blocking layer 22 (screen printing manufacturing) is ±0.1 mm, the single-side tolerance of the light-blocking layer 22 is ±0.05 mm, the bonding equipment precision of the cover plate 2 is ±0.1 mm, and the tolerance of the avoidance step height E of the light-blocking layer 22 at the notch 220 (referring to the distance between the side edge of the notch 220 away from the display area 100 and the side edge of the region of the light-blocking layer 22 without the notch close to the display area 100) is ±0.07 mm. Therefore, the cumulative tolerance of the light-blocking layer 22 is:

[0142] C=sqrt(0.05*0.05+0.1*0.1+0.07*0.07)=0.13 mm. Considering that the cover plate 2 is bonded to the display panel 1 to achieve a Cpk (a parameter indicating the process capability, which measures the ability of the production process to meet the quality requirements; the higher the Cpk, the more stable) of 1.33, after the cover plate 2 is bonded to the display panel 1, the light-blocking layer 22 avoids the opening K in the black matrix 121 by locally setting the notch 220. Since the effective photosensitive area of the photosensitive structure 3 is exposed at the opening K, the light-blocking layer 22 can further avoid the effective photosensitive area of the photosensitive structure 3 by locally setting the notch 220. The side edge of the notch 220 away from the display area 100 needs to be expanded outward by at least 0.13-0.15 mm, i.e., the distance between the side edge of the notch 220 away from the display area 100 and the side edge of the opening K away from the display area 100 in the orthographic projection on the substrate 21 is at least 0.13-0.15 mm.

[0143] If the distance between the side edge of the notch 220 away from the display area 100 and the side edge of the opening K away from the display area 100 in the orthographic projection on the substrate 21 is directly designed to be 0.15 mm, the requirement of the smooth transition of the sensing curve of the effective photosensitive area of the photosensitive structure 3 to the incident light within a large incident angle range (±30°-±80°) with the change of the incident angle cannot be met.

[0144] In order to ensure that the sensing curve of the effective photosensitive area of the photosensitive structure 3 to the incident light in a large incident angle range (±30° to ±80°) smoothly transitions with the change of the incident angle, not only the preparation tolerance of the light shielding layer 22 and the fitting tolerance of the cover plate 2 need to be considered, but also it needs to be ensured that the incident light at a large incident angle can irradiate the effective photosensitive area of the photosensitive structure 3 after being refracted by some film layers in the display panel 1, that is, the light shielding layer 22 needs to be further expanded on the basis that the distance between the side edge of the notch 220 away from the display area 100 and the side edge of the opening K away from the display area 100 on the substrate 21 is at least 0.13-0.15 mm. The theoretical calculation is referred to FIG. 4e, the incident angle is θ, the refraction angle is α, A is the distance between the plane where the light shielding layer 22 is located and the plane where the effective photosensitive area of the photosensitive structure 3 is located, such as A = the thickness of the optically transparent adhesive layer 4 + the thickness of the second substrate 12, B = the distance between the edge of the effective photosensitive area of the photosensitive structure 3 (that is, the opening K) away from the display area 100 and the edge of the light shielding layer 22 close to the display area 100, and the incident light is incident into the display module to be refracted as shown in FIG. 4e. For example, the refractive indexes of the cover plate 2, the optically transparent adhesive layer 4 and the second substrate 12 are close, and they are calculated according to the refractive index of 1.5. The external light is incident into the display module from the air. According to the refraction principle 1*sinθ = 1.5*sinα…equation (1), tanα = B / A…equation (2).

[0145] From the above equation (1) and equation (2), if the incident angle θ is known, the distance D = B+C that the light shielding layer 22 needs to avoid the effective photosensitive area of the photosensitive structure 3 can be calculated; B = A*tanα = A*tan(arcsin(sinθ / 1.5)); then D = A*tan(arcsin(sinθ / 1.5))+C…equation (3).

[0146] If the smooth transition of the sensing curve of the effective photosensitive area of the photosensitive structure 3 to the incident light in the range of ±30° to ±80° is to be realized, the design of the light shielding layer 22 avoiding the effective photosensitive area of the photosensitive structure 3 can be distinguished according to different requirements. Considering the corresponding cases when the A value is different, the A value ranges from 0.316 to 0.394 mm, that is, Amax = 0.394 mm and Amin = 0.316 mm.

[0147] If the incident angle of the incident light is ±30°, that is, θ = 30°, according to equation (3), the distance that the light shielding layer 22 needs to avoid the effective photosensitive area of the photosensitive structure 3 can be calculated as follows:

[0148] D1 = 0.394*tan(19.4712°) + 0.13 = 0.271…equation (4); D1 is the maximum distance that the light shielding layer 22 needs to avoid the effective photosensitive area of the photosensitive structure 3 when the incident angle is ±30°;

[0149] D2 = 0.316*tan(19.4712°) + 0.13 = 0.244… Equation (5); D2 is the minimum distance that the light shielding layer 22 needs to avoid the effective photosensitive area of the photosensitive structure 3 when the incident angle of the incident light is ±30°;

[0150] If the incident angle of the incident light is ±80°, that is, θ = 80°, according to Equation (3), the distance that the light shielding layer 22 needs to avoid the effective photosensitive area of the photosensitive structure 3 can be calculated as follows:

[0151] D1' = 0.394*tan(41.0364°) + 0.13 = 0.4748… Equation (6); D1' is the maximum distance that the light shielding layer 22 needs to avoid the effective photosensitive area of the photosensitive structure 3 when the incident angle of the incident light is ±80°;

[0152] D2' = 0.316*tan(41.0364°) + 0.13 = 0.4070… Equation (7); D2' is the minimum distance that the light shielding layer 22 needs to avoid the effective photosensitive area of the photosensitive structure 3 when the incident angle of the incident light is ±80°.

[0153] As can be seen from the above Equations (4)-(7), when the distance M between the edge of the gap 220 far away from the display area 100 and the edge of the opening K far away from the display area 100 in the orthographic projection on the substrate 21 ranges from 0.244 to 0.4748 mm (after rounding, the range of the distance M is 0.2-0.5 mm), the light shielding layer 22 can avoid forming an obstruction to the effective photosensitive area of the photosensitive structure 3 due to the manufacturing tolerance and the lamination tolerance of the cover plate 2, ensuring that the effective photosensitive area of the photosensitive structure 3 can normally sense external light (such as ambient light), and ensuring that the sensing curve of the effective photosensitive area of the photosensitive structure 3 to the incident light within a large incident angle range (±30°-±80°) smoothly changes with the incident angle.

[0154] In some embodiments, referring to FIGS. 4a and 4b, the distance N between the edge of the gap 220 close to the display area 100 and the edge of the opening K closest to it in the orthographic projection on the substrate 21 ranges from 0.2 to 0.5 mm. In this way, the light shielding layer 22 can also avoid forming an obstruction to the effective photosensitive area of the photosensitive structure 3 due to the manufacturing tolerance and the lamination tolerance of the cover plate 2, ensuring that the effective photosensitive area of the photosensitive structure 3 can normally sense external light (such as ambient light), and ensuring that the sensing curve of the effective photosensitive area of the photosensitive structure 3 to the incident light within a large incident angle range (±30°-±80°) smoothly changes with the incident angle.

[0155] In some embodiments, the orthographic projection of the notch 220 on the substrate 21 comprises at least one circular arc angle, and the circular arc radius R of the circular arc angle is greater than or equal to 0.2 mm. In this way, the accumulation of oil, tooth defects and other defects can be avoided when the silk screen forms the light shielding layer 22 at the edge of the notch 220, thereby avoiding the light shielding layer 22 at the edge of the notch 220 from shielding the effective photosensitive area of the photosensitive structure 3.

[0156] In some embodiments, referring to FIGS. 5a, 5b and 5c, the cover plate 2 further comprises a partially light-transmissive layer 23 located in the frame area 101, and the orthographic projection of the partially light-transmissive layer 23 on the substrate 21 is located at least on the side of the orthographic projection of the opening K on the substrate 21 close to the orthographic projection of the notch 220 on the substrate 21, the orthographic projection of the partially light-transmissive layer 23 on the substrate 21 covers at least the portion of the orthographic projection of the notch 220 on the substrate 21 away from the display area 100, and the orthographic projection of the partially light-transmissive layer 23 on the substrate 21 does not overlap with the orthographic projection of the opening K on the substrate 21.

[0157] In some embodiments, the partially light-transmissive layer 23 is located on the side of the light shielding layer 22 away from the substrate 21. In this way, the partially light-transmissive layer 23 and the side of the light shielding layer 22 close to the light-emitting surface are in the same horizontal plane, thereby avoiding adverse effects on the appearance of the display screen.

[0158] In some embodiments, the partially light-transmissive layer 23 has a light transmittance range of 65% to 85%. For example, the partially light-transmissive layer 23 has a light transmittance range of 65% to 85% for light with a wavelength of 550 nm. In some embodiments, the partially light-transmissive layer 23 can be a semi-transparent ink.

[0159] By providing the partially light-transmissive layer 23 in the cover plate 2, the orthographic projection of the partially light-transmissive layer 23 on the substrate 21 is located at least on the side of the orthographic projection of the opening K on the substrate 21 close to the orthographic projection of the notch 220 on the substrate 21, and the partially light-transmissive layer 23 can cover at least the notch 220 area between the light shielding layer 22 and the orthographic projection of the opening K on the substrate 21, thereby forming a transition in the one-piece black effect in the path area of the light shielding layer 22 to the effective photosensitive area of the photosensitive structure 3, i.e., forming a transition in the appearance change in the path area of the light shielding layer 22 to the effective photosensitive area of the photosensitive structure 3, thereby improving the visual effect of the display module, such as the one-piece black effect of the display module when the screen is off; at the same time, the partially light-transmissive layer 23 can allow most of the incident light to pass through, thereby not completely shielding the incident light with a large incident angle (such as incident light with an incident angle in the range of ±30° to ±80°) that irradiates the effective photosensitive area of the photosensitive structure 3, thereby basically not affecting the reception of the incident light with a large incident angle by the effective photosensitive area of the photosensitive structure 3, and finally ensuring that the sensing curve of the effective photosensitive area of the photosensitive structure 3 for the incident light within a large incident angle range smoothly transitions with the change in the incident angle.

[0160] In some embodiments, the distance P between the side edge of the partial light transmission layer 23 close to the display area 100 and the side edge of the opening K away from the display area 100 in the orthographic projection on the substrate 21 ranges from 0.13 mm to 0.15 mm; the width Q of the portion of the partial light transmission layer 23 within the notch 220 in the direction away from the display area 100 ranges from 0.05 mm to 0.37 mm.

[0161] In this way, the incident light rays with an incident angle of ±30° to ±80° are not blocked by the light shielding layer 22 and can be incident to the effective light sensing area of the light sensing structure 3, so that the effective light sensing area of the light sensing structure 3 can receive the incident light rays with a large incident angle, and the sensing curve of the effective light sensing area of the light sensing structure 3 with respect to the incident angle of the incident light rays can smoothly transition.

[0162] In the related art, according to the test diagram of the ink on the incident light rays with a large incident angle incident to the effective light sensing area of the light sensor, the luminance value data of the incident light rays tested by the light sensor is 200 when the incident angle is 0°, and the luminance value data of the incident light rays tested by the light sensor is 140 when the incident angle is ±50° (the angle between the normal line of the light emitting surface of the display panel 1 and the incident light rays is ±50°). In this embodiment, through the above distance P and width Q of the partial light transmission layer 23, the incident light rays with an incident angle of ±80° are not blocked by the light shielding layer 22 and can be incident to the effective light sensing area of the light sensing structure 3, and the luminance value of the incident light rays with an incident angle of ±50° tested by the light sensing structure 3 can reach half of the luminance value of the incident light rays with an incident angle of 0°.

[0163] In some embodiments, the orthographic projection of the partial light transmission layer 23 on the substrate 21 covers the notch 220, and the width of the overlapping area between the orthographic projection of the partial light transmission layer 23 and the light shielding layer 22 surrounding the edge of the notch 220 on the substrate 21 is greater than or equal to 0.3 mm. In this way, on the one hand, it can ensure that there is no gap between the partial light transmission layer 23 and the light shielding layer 22, thereby improving the visual effect of the display module; on the other hand, since the light shielding layer 22 is first silk-screened on the substrate 21, and then the partial light transmission layer 23 is silk-screened, the light shielding layer 22 adopts light shielding ink, and the partial light transmission layer 23 adopts semi-transparent ink, and the overprinting ability of the ink is 0.3 mm, so that the silk-screening of the partial light transmission layer 23 is smooth, and the edge of the partial light transmission layer 23 is not prone to defects.

[0164] In some embodiments, the thickness of the partial light transmission layer 23 ranges from 3 μm to 7 μm.

[0165] In some embodiments, referring to FIG. 6a and FIG. 6b, FIG. 6a is a curve of the change of the photosensitive luminance of the photosensitive structure 3 with the change of the incident angle of the incident light in the display module structure shown in FIG. 4c, and FIG. 6b is a curve of the change of the photosensitive luminance of the photosensitive structure 3 with the change of the incident angle of the incident light in the display module structure shown in FIG. 5c; in the display module structure of FIG. 4c, the photosensitive luminance of the photosensitive structure 3 is 250-300 lux when the incident angle of the incident light is 45°-50°; in the display module structure of FIG. 5c, the photosensitive luminance of the photosensitive structure 3 is 210-240 lux when the incident angle of the incident light is 45°-50°, and the curve of the change of the photosensitive luminance of the photosensitive structure 3 with the change of the incident angle of the incident light obtained by testing is still smooth transition. If the photosensitive luminance of the photosensitive structure 3 decreases to about 150 lux when the incident angle of the incident light is 50°, the curve of the change of the photosensitive luminance of the photosensitive structure 3 with the change of the incident angle of the incident light will have a sudden change, and the corresponding curve of the change of the photosensitive luminance with the change of the incident angle of the incident light cannot be smooth. The transmittance value corresponding to the photosensitive luminance of 150 lux is about 150 / 250=60%. Therefore, the transmittance range of the partial light-transmitting layer 23 needs to be set to 65%-85%.

[0166] In some embodiments, referring to FIG. 7a and FIG. 7b, on the basis of the display module structure shown in FIG. 4c, the display panel 1 further includes a second substrate 12, the second substrate 12 includes a second base 120 and a first film layer 124, and the first film layer 124 is located in the frame area 101; the first film layer 124 is located on the side of the second base 120 close to the cover plate 2, and the black matrix 121 is located on the side of the second base 120 away from the cover plate 2; the orthographic projection of the first film layer 124 on the substrate 21 is located on the side of the orthographic projection of the opening K on the substrate 21 close to the orthographic projection of the notch 220 on the substrate 21; the orthographic projection of the first film layer 124 on the substrate 21 does not overlap with the orthographic projection of the opening K on the substrate 21, and the orthographic projection of the first film layer 124 on the substrate 21 covers at least part of the orthographic projection of the notch 220 on the substrate 21 away from the display area 100.

[0167] In some embodiments, the display panel 1 further includes a first substrate 11, and the first substrate 11 and the second substrate 12 are litted; the cover plate 2 is located on the side of the second substrate 12 away from the first substrate 11, the first substrate 11 includes a first base 110 and the photosensitive structure 3, the photosensitive structure 3 is located on the side of the first base 110 close to the second substrate 12, and the effective photosensitive area of the photosensitive structure 3 is located in the frame area 101; the black matrix 121 is located on the side of the second base 120 close to the first substrate 11; the orthographic projection of the opening K on the first base 110 covers the orthographic projection of the effective photosensitive area of the photosensitive structure 3 on the first base 110; and the side boundary of the first film layer 124 close to the display area 100 coincides with the orthographic projection of the side boundary of the opening K on the substrate 21 away from the display area 100.

[0168] In some embodiments, the first film layer 124 adopts a partially light-transmissive material, such as a semi-transparent ink, and the orthographic projection of the first film layer 124 on the substrate 21 covers the area between the orthographic projection of the opening K and the orthographic projection of the notch 220 on the substrate 21.

[0169] In some embodiments, the light transmittance of the first film layer 124 ranges from 65% to 85%.

[0170] By arranging the partially light-transmissive first film layer 124 on the side of the second substrate 120 away from the cover plate 2 or on the side of the second substrate 120 close to the cover plate 2, and arranging the orthographic projection of the first film layer 124 on the substrate 21 on the side of the orthographic projection of the opening K on the substrate 21 close to the orthographic projection of the notch 220 on the substrate 21, the partially light-transmissive layer 23 can cover the area of the notch 220 between the light-blocking layer 22 and the orthographic projection of the opening K on the substrate 21, so that the path area of the light-blocking layer 22 to the effective photosensitive area of the photosensitive structure 3 forms a transition in the integral black effect, i.e., the path area of the light-blocking layer 22 to the effective photosensitive area of the photosensitive structure 3 forms a transition in the appearance, thereby improving the appearance visual effect of the display module, such as the integral black effect of the display module when the screen is off. At the same time, since the first film layer 124 is directly arranged on the second substrate 120, the first film layer 124 can be regarded as a part of the second substrate 12, and it will not completely block the incident light rays with a large incident angle (such as incident light rays with an incident angle in the range of ±30° to ±80°) that irradiate the effective photosensitive area of the photosensitive structure 3, so as not to affect the reception of the incident light rays with a large incident angle by the effective photosensitive area of the photosensitive structure 3, and finally ensure that the sensing curve of the effective photosensitive area of the photosensitive structure 3 with respect to the incident light rays within a large incident angle range changes smoothly.

[0171] Since the first film layer 124 adopting a partially light-transmissive material will not affect the reception of the incident light rays by the effective photosensitive area of the photosensitive structure 3 even if it partially covers the opening K due to the preparation tolerance, the first film layer 124 and the adjacent edge of the opening K are designed to be flush in this embodiment, so that the integral black effect of the path area of the light-blocking layer 22 to the effective photosensitive area of the photosensitive structure 3 forms a transition, better improving the appearance visual effect of the display module, and at the same time, not blocking part of the area of the opening K, avoiding the effective photosensitive area of the photosensitive structure 3 from being blocked.

[0172] In some embodiments, referring to FIGS. 7c and 7d, the first film layer 124 adopts a non-light-transmissive material, such as a light-blocking ink, and the orthographic projection of the first film layer 124 on the substrate 21 covers the local area between the opening K and the orthographic projection of the notch 220 on the substrate 21, and the side edge of the orthographic projection of the first film layer 124 on the substrate 21 close to the display area 100 is spaced from the orthographic projection of the opening K on the substrate 21 by a first spacing S, and the first spacing S is the preparation tolerance of the first film layer 124.

[0173] The first distance S is the preparation tolerance of the light shielding ink ±0.1 mm. Only the preparation tolerance of the first film layer 124 is considered here, and the first film layer 124 is directly prepared on the second substrate 120, without considering the fitting tolerance of the first film layer 124.

[0174] In some embodiments, referring to FIGS. 7a-7d, the display module further comprises an optically transparent adhesive layer 4 between the cover plate 2 and the display panel 1; the first substrate 11 further comprises a first polarizer 111, the first polarizer 111 being located on the side of the first substrate 110 away from the second substrate 12, the first polarizer 111 extending from the display area 100 to the frame area 101; the second substrate 12 further comprises a color resistance 122 and a second polarizer 123, the black matrix 121 and the color resistance 122 being sequentially stacked on the side of the second substrate 120 close to the first substrate 11, the black matrix 121 and the color resistance 122 being located in the display area 100 and the frame area 101; the second polarizer 123 being located on the side of the first film layer 124 away from the second substrate 120; the color resistance 122 in the frame area 101 in orthographic projection on the second substrate 120 covering the orthographic projection of the opening K on the second substrate 120.

[0175] In some embodiments, the orthographic projection of the first film layer 124 on the substrate 21 covers the gap 220, and the width of the overlapping area of the orthographic projection of the first film layer 124 and the light shielding layer 22 surrounding the edge of the gap 220 on the substrate 21 is greater than or equal to 0.13 mm. Since the light shielding layer 22 is arranged in the cover plate 2, the fitting tolerance of the cover plate 2 is 0.13-0.15 mm, and the width of the overlapping area of the orthographic projection of the first film layer 124 and the gap 220 on the substrate 21 is set to be greater than or equal to 0.13 mm, which can ensure that there is no gap between the first film layer 124 and the light shielding layer 22 after the cover plate 2 is assembled with the display panel 1, thereby improving the visual effect of the appearance of the display module.

[0176] In some embodiments, referring to FIGS. 8a, 8b, 8c and 8d, the photosensitive structure 3 comprises a plurality of photosensitive units 30; the plurality of photosensitive units 30 are sequentially arranged along the extension direction of the display area 100 boundary line L corresponding to the side frame area 101 where the photosensitive units 30 are located; and the plurality of photosensitive units 30 are located at the middle position or the end position of the display area 100 boundary line L corresponding to the side where the photosensitive units 30 are located.

[0177] In some embodiments, referring to FIGS. 8a and 8b, the extending direction of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located is a straight line. For example, the display module is a blind hole screen, i.e., a blind hole is formed in the display area 100 of the display module, and the blind hole is used to accommodate the camera device 15. The extending direction of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located of the blind hole screen is a straight line. Referring to FIGS. 8c and 8d, the extending direction of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located is a water-drop-shaped arc line. For example, the display module is a water-drop screen, i.e., the extending direction of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located of the water-drop screen is a water-drop-shaped arc line, and the camera device 15 is accommodated in the non-display area surrounded by the water-drop-shaped arc line.

[0178] In some embodiments, referring to FIGS. 8a, 8b, 8c and 8d, the shape of the middle part of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located includes a straight line, a semicircular arc line or a parabolic line, and the plurality of photosensitive units 30 are located at the middle positions or the end positions of the middle part of the boundary line of the display area 100 corresponding to the side frame area 101.

[0179] In some embodiments, referring to FIGS. 8a, 8b, 8c and 8d, one photosensitive unit 30 corresponds to one opening K, and a plurality of photosensitive units 30 correspond to a plurality of different openings K; the distance m between the adjacent edges of adjacent openings K is greater than or equal to 10 μm.

[0180] In some embodiments, referring to FIGS. 8a, 8b, 8c and 8d, one photosensitive unit 30 corresponds to one color of the color resist 122, and a plurality of photosensitive units 30 correspond to color resists 122 of different colors; the color resist 122 includes a red color resist R, a blue color resist B and a green color resist G, and the red color resist R, the blue color resist B and the green color resist G are arranged in sequence along the extending direction of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located; the photosensitive unit 30 corresponding to the red color resist R, the photosensitive unit 30 corresponding to the blue color resist B and the photosensitive unit 30 corresponding to the green color resist G are arranged in sequence along the extending direction of the boundary line L of the display area 100 corresponding to the side frame area 101 where the photosensitive unit 30 is located. The arrangement of the photosensitive unit 30 can improve the accuracy of the effective photosensitive area of the entire photosensitive structure 3 in sensing external light, thereby improving the effect of the display module adjusting its display brightness and contrast according to the sensing result of the photosensitive structure 3.

[0181] In some embodiments, an external light source is incident on the photosensitive unit 30 corresponding to the red color resist R, the photosensitive unit 30 corresponding to the blue color resist B, and the photosensitive unit 30 corresponding to the green color resist G. The light emitted by the light source has different proportions of blue light, green light, and red light. The photosensitive unit 30 corresponding to the red color resist R receives red light from the light source, the photosensitive unit 30 corresponding to the blue color resist B receives blue light from the light source, and the photosensitive unit 30 corresponding to the green color resist G receives green light from the light source. At the same time, the photosensitive unit 30 corresponding to the green color resist G can also detect the brightness of the ambient light. The voltage and current values detected by the three photosensitive units 30 represent the proportions of red light, blue light, and green light in the external light source. Thus, the color temperature of the external light source can be calculated, so as to adjust the display brightness and contrast of the display module and improve the display effect of the display module.

[0182] In some embodiments, referring to FIGS. 8a, 8b, 8c, and 8d, the first substrate 11 further includes at least one dummy photosensitive unit 31 located in the frame area 101 and on the side of the first base 110 close to the second substrate 12. The at least one dummy photosensitive unit 31, the photosensitive unit 30 corresponding to the red color resist R, the photosensitive unit 30 corresponding to the blue color resist B, and the photosensitive unit 30 corresponding to the green color resist G are arranged in sequence along the extension direction of the boundary line L of the display area 100 corresponding to the side frame area 101.

[0183] The dummy photosensitive unit 31 and the photosensitive unit 30 can both adopt a photoelectric conversion thin film transistor. Due to the shielding of the black matrix 121, the effective photosensitive area of the dummy photosensitive unit 31 cannot receive external light source irradiation. The sensing result of the dummy photosensitive unit 31 is only used as a reference for the sensing result of the photosensitive unit 30. That is, the photosensitive signal of the photosensitive unit 30 is compared with the non-photosensitive signal of the dummy photosensitive unit 31 to provide a correction reference for the interference of other ambient light on the display brightness of the display module.

[0184] In some embodiments, the effective photosensitive area of the dummy photosensitive unit 31 and the projection of the light shielding layer 22 on the substrate 21 at least partially overlap, or the effective photosensitive area of the dummy photosensitive unit 31 and the projection of the light shielding layer 22 on the substrate 21 do not overlap. That is, the light shielding layer 22 can avoid the effective photosensitive area of the dummy photosensitive unit 31, or the light shielding layer 22 can not avoid the effective photosensitive area of the dummy photosensitive unit 31. If the light shielding layer 22 does not avoid the effective photosensitive area of the dummy photosensitive unit 31, the light shielding area of the light shielding layer 22 can be further increased, thereby further improving the light shielding effect of the light shielding layer 22 and improving the integral black effect of the display module.

[0185] In some embodiments, referring to FIGS. 8a, 8b, 8c and 8d, the notch 220 is mirror-symmetrical with the center line Y of the side frame area 101 where the notch 220 is located as the axis of symmetry; the center line Y is perpendicular to the length direction of the side frame area 101 where the notch 220 is located. In this way, the appearance of the side frame area 101 where the notch 220 is located and the entire display module can be improved.

[0186] In some embodiments, referring to FIGS. 8a, 8b, 8c and 8d, the photosensitive unit 30 corresponding to the red color filter R, the photosensitive unit 30 corresponding to the blue color filter B, the photosensitive unit 30 corresponding to the green color filter G and the dummy photosensitive unit 31 are mirror-symmetrical with the center line Y of the side frame area 101 where the notch 220 is located as the axis of symmetry.

[0187] In some embodiments, referring to FIGS. 8e and 8f, when the light shielding layer 22 does not avoid the effective photosensitive area of the dummy photosensitive unit 31, the notch 220 can also not be mirror-symmetrical with the center line Y of the side frame area 101 where the notch 220 is located as the axis of symmetry.

[0188] In some embodiments, referring to FIGS. 9a, 9b and 9c, the photosensitive unit 30 includes a plurality of first photosensitive transistors T1, which are arranged in sequence along the extension direction of the display area 100 boundary line L corresponding to the side frame area 101 where the photosensitive unit 30 is located; the dummy photosensitive unit 31 includes a plurality of second photosensitive transistors T2, which are arranged in sequence along the extension direction of the display area 100 boundary line L corresponding to the side frame area 101 where the dummy photosensitive unit 31 is located; the gate of the first photosensitive transistor T1 and the gate of the second photosensitive transistor T2 are electrically connected to the first signal line G2; the first electrode of the first photosensitive transistor T1 and the first electrode of the second photosensitive transistor T2 are electrically connected to the second signal line S1; the second electrode of the first photosensitive transistor T1 in the photosensitive unit 30 corresponding to the red color filter R is electrically connected to the third signal line R1; the second electrode of the first photosensitive transistor T1 in the photosensitive unit 30 corresponding to the blue color filter B is electrically connected to the fourth signal line B1; the second electrode of the first photosensitive transistor T1 in the photosensitive unit 30 corresponding to the green color filter G is electrically connected to the fifth signal line G1; and the second electrode of the second photosensitive transistor T2 is electrically connected to the sixth signal line D3.

[0189] In some embodiments, referring to FIGS. 9a and 9b, the first light-sensing transistor T1 and the second light-sensing transistor T2 have the same structure, both including a gate Gate, a gate insulating layer GI, an active layer ACT, a first electrode S' and a second electrode D' stacked in sequence on one side of the first substrate 110, the first electrode S' and the second electrode D' are located in the same layer, and the side of the first electrode S' and the second electrode D' away from the first substrate 110 is further provided with a passivation layer PVX. For example, the active layer ACT adopts a-si, i.e. amorphous silicon material. The light-sensing principle of the first light-sensing transistor T1 and the second light-sensing transistor T2 is the same, that is, the light makes the active layer ACT capture the energy of the photons, so that the negatively charged electrons and the positively charged holes in the semiconductor active layer ACT are separated, the electrons move to form a current, thereby realizing the process of photoelectric conversion.

[0190] In some embodiments, the display module further includes a pixel circuit, the pixel circuit is arranged on the side of the first substrate close to the second substrate, the pixel circuit is located in the display area, and the pixel circuit includes a plurality of thin film transistors. The thin film transistors in the pixel circuit and each film layer (including the gate, the active layer, the first electrode and the second electrode) in the first light-sensing transistor and the second light-sensing transistor are respectively prepared by a one-time patterning process.

[0191] In some embodiments, referring to FIG. 10, the frame area 101 includes a binding side frame area 101a and a first side frame area 101b, the binding side frame area 101a and the first side frame area 101b are oppositely arranged; the light-sensing structure 3 is located in the first side frame area 101b; the display module further includes a dummy load circuit 7, an electrostatic discharge circuit 8 and a reference voltage circuit 9, at least located in the first side frame area 101b, and the dummy load circuit 7, the electrostatic discharge circuit 8, the light-sensing structure 3 and the reference voltage circuit 9 are arranged in sequence in the direction away from the display area 100. In this way, the effective light-sensing area of the light-sensing structure 3 is far away from the display area 100, the light-shielding layer 22 is recessed to form a gap 220 in the position corresponding to the effective light-sensing area of the light-sensing structure 3 in the direction away from the display area 100, which can make the light-shielding layer 22 avoid the effective light-sensing area of the light-sensing structure 3, avoid the light-shielding layer 22 from shielding the effective light-sensing area of the light-sensing structure 3 due to the preparation tolerance and the cover plate 2 bonding tolerance, thereby ensuring that the effective light-sensing area of the light-sensing structure 3 can normally sense the external light (such as ambient light).

[0192] In a second aspect, the display module comprises a display area 100 and a frame area 101 surrounding at least one side of the display area 100, and further comprises a display panel 1 and a cover plate 2. The display panel 1 comprises a first substrate 11 and a second substrate 12 which are bonded together. The cover plate 2 is located on the side of the second substrate 12 away from the first substrate 11. The first substrate 11 comprises a first base 110 and a light-sensing structure 3. The effective light-sensing area of the light-sensing structure 3 is located in the frame area 101 and on the side of the first base 110 close to the second substrate 12. The second substrate 12 comprises a second base 120, a black matrix 121 and color resist 122. The black matrix 121 and the color resist 122 are sequentially stacked on the side of the second base 120 close to the first substrate 11. The black matrix 121 and the color resist 122 are located in the display area 100 and the frame area 101. An opening K is formed in the black matrix 121 of the frame area 101. The color resist 122 in the frame area 101 covers the projection of the opening K on the second base 120. The projection of the opening K on the first base 110 covers the projection of the effective light-sensing area of the light-sensing structure 3 on the first base 110. The cover plate 2 comprises a substrate 21 and a light-shielding layer 22. The light-shielding layer 22 is located on the side of the substrate 21 close to the second substrate 12. The light-shielding layer 22 is located in the frame area 101 and surrounds at least the edge of the display area 100 on the side where the light-sensing structure 3 is located. The light-shielding layer 22 is located on the side of the projection of the effective light-sensing area of the light-sensing structure 3 on the substrate 21 away from the display area 100. The projection of the effective light-sensing area of the light-sensing structure 3 and the light-shielding layer 22 on the substrate 21 do not overlap. The light-shielding layer 22 comprises a first part 221 and a second part 222 which are connected as one. The first part 221 and the projection of the effective light-sensing area of the light-sensing structure 3 on the substrate 21 are oppositely arranged. The distance m1 between the side of the first part 221 close to the display area 100 and the boundary of the display area 100 is greater than the distance m2 between the side of the second part 222 close to the display area 100 and the boundary of the display area 100.

[0193] The display module provided in the embodiments of the present disclosure has the following advantages. On the one hand, the light-shielding layer 22 can avoid the effective light-sensing area of the light-sensing structure 3, so as to avoid the light-shielding layer 22 from shielding the effective light-sensing area of the light-sensing structure 3 due to the manufacturing tolerance and the bonding tolerance of the cover plate 2, thereby ensuring that the effective light-sensing area of the light-sensing structure 3 can normally sense external light (such as ambient light). On the other hand, the light-shielding layer 22 basically does not affect the overall appearance visual effect of the display module, such as not affecting the integral black effect of the display module when the screen is off. On the other hand, the light-shielding layer 22 also does not shield the incident light with a large incident angle (such as the incident light with an incident angle in the range of ±30° to ±80°) that irradiates the effective light-sensing area of the light-sensing structure 3, thereby not affecting the reception of the light-sensing structure 3 to the incident light with a large angle, and further ensuring that the sensing curve of the effective light-sensing area of the light-sensing structure 3 to the incident light within a large angle range smoothly changes with the incident angle.

[0194] In a third aspect, the embodiments of the present disclosure further provide a display device, which comprises the display module in any of the above embodiments.

[0195] By using the display module in the above embodiments, the effective light-sensing area of the light-sensing structure in the display device can normally sense external light, the overall appearance visual effect of the display device can be ensured, and the sensing curve of the effective light-sensing area of the light-sensing structure in the display device to the incident light within a large angle range smoothly changes with the incident angle.

[0196] The display device provided by the embodiments of the present disclosure can be a liquid crystal panel, a liquid crystal television, a liquid crystal billboard, a display, a mobile phone, a navigator, or any product or component with a display function.

[0197] It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present disclosure, and the present disclosure is not limited thereto. Various modifications and improvements can be made by those of ordinary skill in the art without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also considered to be within the protection scope of the present disclosure.

Claims

1. A display module, wherein, The display module comprises a display area and a frame area, the frame area surrounds at least one side of the display area, The display module further comprises a display panel and a cover plate, the cover plate covers the display side of the display panel, The display panel comprises a black matrix, and an opening is formed in the black matrix of the frame area; The cover plate comprises a substrate and a light shielding layer, the light shielding layer is located on the side of the substrate close to the display panel, The light shielding layer is located in the frame area, and the light shielding layer at least surrounds the edge of the display area on the side where the opening is located, The light shielding layer is located on the side away from the display area of the orthographic projection of the opening on the substrate, and the orthographic projection of the opening and the light shielding layer on the substrate does not overlap, The light shielding layer has a notch at a position corresponding to the opening, and the notch is a recess away from the display area.

2. The display module of claim 1, wherein, The cover plate further comprises a partial light transmission layer located in the frame area, and the orthographic projection of the partial light transmission layer on the substrate is located on the side of the orthographic projection of the opening on the substrate close to the orthographic projection of the notch on the substrate, The orthographic projection of the partial light transmission layer on the substrate at least covers the part of the orthographic projection of the notch on the substrate away from the display area, The orthographic projection of the partial light transmission layer and the orthographic projection of the opening on the substrate do not overlap.

3. The display module of claim 1, wherein, The display panel further comprises a second substrate, The second substrate comprises a second base and a first film layer, and the first film layer is located in the frame area; The first film layer is located on the side of the second base close to the cover plate; The black matrix is located on the side of the second base away from the cover plate; The orthographic projection of the first film layer on the substrate is located on the side of the orthographic projection of the opening on the substrate close to the orthographic projection of the notch on the substrate; The orthographic projection of the first film layer and the orthographic projection of the opening on the substrate do not overlap, The orthographic projection of the first film layer on the substrate covers at least part of the orthographic projection of the notch on the substrate away from the display area.

4. The display module of claim 3, wherein, The first film layer is made of a partial light transmission material, The orthographic projection of the first film layer on the substrate covers the area between the orthographic projection of the opening and the orthographic projection of the notch on the substrate.

5. The display module of claim 3, wherein, The first film layer is made of a non-light transmission material, The orthographic projection of the first film layer on the substrate covers the local area between the orthographic projection of the opening and the orthographic projection of the notch on the substrate, The side edge of the orthographic projection of the first film layer on the substrate close to the display area is spaced from the orthographic projection of the opening on the substrate by a first spacing, The first spacing is a manufacturing tolerance of the first film layer.

6. The display module of claim 2, wherein, The display panel further comprises a first substrate and a second substrate, and the first substrate and the second substrate are attached together; The cover plate is located on the side of the second substrate away from the first substrate, The first substrate comprises a first base and a light sensing structure, The light sensing structure is located on the side of the first base close to the second substrate, and the effective light sensing area of the light sensing structure is located in the frame area, The second substrate comprises a second base, The black matrix is located on the side of the second base close to the first substrate; A projection of the opening on the first substrate covers a projection of an effective light-sensing area of the light-sensing structure on the first substrate.

7. The display module of claim 6, wherein, A distance between a side edge of the notch away from the display area and a side edge of the opening away from the display area on the substrate ranges from 0.2 mm to 0.5 mm.

8. The display module of claim 7, wherein, A distance between an edge of the notch close to the display area and an edge of the opening closest to the display area on the substrate ranges from 0.2 mm to 0.5 mm.

9. The display module of claim 6, wherein, A distance between a side edge of the partially light-transmissive layer close to the display area and a side edge of the opening away from the display area on the substrate ranges from 0.13 mm to 0.15 mm. A width of a portion of the partially light-transmissive layer within the notch in a direction away from the display area ranges from 0.05 mm to 0.37 mm.

10. The display module of claim 6, wherein, A projection of the partially light-transmissive layer on the substrate covers the notch, and a width of an overlapping area of a projection of the partially light-transmissive layer and the light-blocking layer around an edge of the notch on the substrate is greater than or equal to 0.3 mm.

11. The display module of claim 4, wherein, The display panel further includes a first substrate, and the first substrate and the second substrate are attached together. The cover plate is located on a side of the second substrate away from the first substrate. The first substrate includes a first base and a light-sensing structure. The light-sensing structure is located on a side of the first base close to the second substrate, and an effective light-sensing area of the light-sensing structure is located in the frame area. The black matrix is located on a side of the second base close to the first substrate. A projection of the opening on the first substrate covers a projection of the effective light-sensing area of the light-sensing structure on the first substrate. A side boundary of the first film layer close to the display area coincides with a side boundary of the opening away from the display area on the substrate.

12. The display module of claim 3, wherein, A projection of the first film layer on the substrate covers the notch, and a width of an overlapping area of a projection of the first film layer and the light-blocking layer around an edge of the notch on the substrate is greater than or equal to 0.13 mm.

13. The display module of claim 2, wherein, A light transmittance of the partially light-transmissive layer ranges from 65% to 85%.

14. The display module of claim 6 or 11, wherein, The second substrate further includes a color resist. The color resist is located on a side of the black matrix close to the first substrate. A projection of the color resist of the frame area on the second base covers a projection of the opening on the second base.

15. The display module of claim 14, wherein, The light-sensing structure includes a plurality of light-sensing units. One light-sensing unit corresponds to one opening, and the plurality of light-sensing units correspond to a plurality of different openings. A distance between adjacent edges of adjacent openings ranges from 10 μm or more.

16. The display module of claim 15, wherein, One light-sensing unit corresponds to one color of the color resist, and the plurality of light-sensing units correspond to different colors of the color resist. The color resist includes a red color resist, a blue color resist, and a green color resist. The red color resist, the blue color resist, and the green color resist are arranged in sequence along an extension direction of a boundary line of the display area corresponding to the frame area on a side where the color resist is located. The photosensitive units corresponding to the red color resist, the photosensitive units corresponding to the blue color resist and the photosensitive units corresponding to the green color resist are arranged in sequence along the extension direction of the display area boundary line corresponding to the side of the frame area where the photosensitive units are located.

17. The display module of claim 16, wherein, The first substrate further comprises at least one dummy photosensitive unit located in the frame area and on the side of the first base close to the second substrate, The at least one dummy photosensitive unit, the photosensitive units corresponding to the red color resist, the photosensitive units corresponding to the blue color resist and the photosensitive units corresponding to the green color resist are arranged in sequence along the extension direction of the display area boundary line corresponding to the side of the frame area where the photosensitive units are located. The orthographic projection of the black matrix on the first base covers the effective photosensitive area of the dummy photosensitive unit, and the orthographic projection of the color resist and the effective photosensitive area of the dummy photosensitive unit on the first base does not overlap.

18. The display module of claim 17, wherein, The orthographic projection of the effective photosensitive area of the dummy photosensitive unit and the light shielding layer on the substrate at least partially overlaps. Alternatively, the orthographic projection of the effective photosensitive area of the dummy photosensitive unit and the light shielding layer on the substrate does not overlap.

19. The display module of claim 18, wherein, The notch is mirror-symmetrical with the center line of the frame area on the side where the notch is located as the axis of symmetry. The center line is perpendicular to the length direction of the frame area on the side where the notch is located.

20. The display module of claim 18, wherein, The photosensitive unit comprises a plurality of first photosensitive transistors arranged in sequence along the extension direction of the display area boundary line corresponding to the side of the frame area where the photosensitive unit is located, The dummy photosensitive unit comprises a plurality of second photosensitive transistors arranged in sequence along the extension direction of the display area boundary line corresponding to the side of the frame area where the dummy photosensitive unit is located. The gate of the first photosensitive transistor and the gate of the second photosensitive transistor are electrically connected to a first signal line, The first electrode of the first photosensitive transistor and the first electrode of the second photosensitive transistor are electrically connected to a second signal line, The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the red color resist is electrically connected to a third signal line; The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the blue color resist is electrically connected to a fourth signal line; The second electrode of the first photosensitive transistor in the photosensitive unit corresponding to the green color resist is electrically connected to a fifth signal line; The second electrode of the second photosensitive transistor is electrically connected to a sixth signal line.

21. A display module, wherein, The display module further comprises a display panel and a cover plate, and the cover plate covers the display side of the display panel, The display panel comprises a photosensitive structure, and the effective photosensitive area of the photosensitive structure is located in the frame area, The cover plate comprises a substrate and a light shielding layer, and the light shielding layer is located on the side of the substrate close to the display panel, The light shielding layer is located in the frame area, and the light shielding layer at least surrounds the edge of the display area on the side where the photosensitive structure is located, The light shielding layer is located on the side away from the display area of the orthographic projection of the effective photosensitive area of the photosensitive structure on the substrate, and the orthographic projection of the effective photosensitive area of the photosensitive structure and the light shielding layer on the substrate does not overlap, ​ The light-shielding layer has a notch at a position corresponding to an effective light-sensing area of the light-sensing structure, and the notch is a recess away from the display area.

22. The display module of claim 21, wherein, The light-sensing structure comprises a plurality of light-sensing units. The plurality of light-sensing units are arranged in sequence along an extension direction of a display area boundary line corresponding to the bezel area on the side where the light-sensing units are located. The plurality of light-sensing units are located at intermediate positions or end positions of the display area boundary line on the side where the light-sensing units are located.

23. The display module of claim 22, wherein, The shape of the intermediate portion of the display area boundary line corresponding to the bezel area on the side where the light-sensing units are located comprises a straight line, a semicircular arc line or a parabolic line. The plurality of light-sensing units are located at intermediate positions or end positions of the intermediate portion of the display area boundary line on the side where the light-sensing units are located.

24. The display module of claim 21, wherein, The bezel area comprises a binding side bezel area and a first side bezel area, and the binding side bezel area and the first side bezel area are oppositely arranged. The light-sensing structure is located in the first side bezel area. The display module further comprises a dummy load circuit, an electrostatic discharge circuit and a reference voltage circuit, and at least the first side bezel area, The dummy load circuit, the electrostatic discharge circuit, the light-sensing structure and the reference voltage circuit are arranged in sequence away from the display area.

25. A display device comprising: The display module comprises any one of claims 1-24.

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