Display module, display screen, electronic device, and display control method

Abstract

The present application relates to a display module (20), a display screen, an electronic device (10), and a display control method. The display module (20) comprises a light-emitting layer (24), an optical modulation layer (28), and a light-shielding layer (29). The light-emitting layer (24) comprises a plurality of pixel units (241). The optical modulation layer (28) is disposed on the emergent side of the light-emitting layer (24) and is used to adjust light emitted by the pixel units (241). The light-shielding layer (29) is disposed on the emergent side of the light-emitting layer (24), and the orthographic projection of the light-shielding layer (29) on the light-emitting layer (24) surrounds at least some of the pixel units (241).

Description

Display module, display screen, electronic device and display control method

[0001] Related applications

[0002] The present application claims priority to the Chinese patent application No. 2024112886178, filed on September 13, 2024, entitled "Display module, display screen, electronic device and display control method", the contents of which are hereby incorporated by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of display devices, and in particular to a display module, a display screen, an electronic device and a display control method. BACKGROUND

[0004] With the rapid development of display technology, different types of display modules such as OLED screens are widely used in electronic devices such as smart phones, tablet computers, e-readers, etc. Among them, there are display modules provided with anti-peeping films, which block light at large angles through the anti-peeping films to achieve an anti-peeping function to improve the use safety performance of electronic devices. However, the setting of the anti-peeping film in the display module can easily lead to the deterioration of the light output efficiency and display quality of the display module, affecting the user's experience. SUMMARY

[0005] In one aspect, the present application provides a display module including a light-emitting layer, an optical modulation layer and a light-shielding layer. The light-emitting layer includes a plurality of pixel units; the optical modulation layer is arranged on the light-emitting side of the light-emitting layer and is used to adjust the light emitted by the pixel units. The light-shielding layer is arranged on the light-emitting side of the light-emitting layer, and the orthographic projection of the light-shielding layer on the light-emitting layer surrounds at least part of the pixel units.

[0006] In another aspect, the present application provides a display screen including a cover plate and a display module as described above, the cover plate being arranged on the side of the optical modulation layer away from the light-emitting layer.

[0007] In yet another aspect, the present application provides an electronic device including a middle frame and a display screen as described above, the display screen being arranged on the middle frame.

[0008] In still another aspect, the present application provides a display control method for controlling the display state of a display module, the display module including a light-emitting layer and a light-shielding layer, the light-emitting layer including a plurality of first pixel units arranged in an array and a plurality of second pixel units arranged in an array together with the first pixel units, the orthographic projection of the light-shielding layer on the light-emitting layer being offset from the area corresponding to the second pixel units and surrounding the first pixel units, the display control method including:

[0009] A switch of the first pixel unit and the second pixel unit is controlled to enable the display module to switch between the first display state and the second display state, wherein in the first display state, the first pixel unit is opened and at least part of the second pixel unit is closed, and in the second display state, the first pixel unit and the second pixel unit are both opened.

[0010] The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort on the basis of the disclosed accompanying drawings.

[0012] FIG. 1 is a structural schematic diagram of an electronic device in some embodiments.

[0013] FIG. 2 is a structural schematic diagram of a display module in some embodiments.

[0014] FIG. 3 is a luminance decay curve diagram of a pixel unit in some embodiments.

[0015] FIG. 4 is a luminance decay curve diagram corresponding to different opening radii of a pixel unit in some embodiments.

[0016] FIG. 5 is an array schematic diagram of a pixel unit in some embodiments.

[0017] FIG. 6 is a structural schematic diagram of a display module corresponding to a second pixel unit in some embodiments.

[0018] FIG. 7 is an array schematic diagram in which only a first pixel unit is opened in some embodiments.

[0019] FIG. 8 is an array schematic diagram in which a first pixel unit and a second pixel unit are opened in some embodiments.

[0020] FIG. 9 is a structural schematic diagram of a display module provided with a color filter film in some embodiments.

[0021] FIG. 10 is a structural schematic diagram of a display module provided with a microlens array layer in some embodiments.

[0022] FIG. 11 is a relative relationship schematic diagram of a first pixel unit, a microlens portion, and a light shielding matrix in some embodiments.

[0023] FIG. 12 is a structural diagram of a display module provided with a microlens array layer in some embodiments.

[0024] FIG. 13 is a structural diagram of a display module provided with a microlens array layer and a color filter film in some embodiments.

[0025] FIG. 14 is a structural diagram of an electronic device including other elements in some embodiments. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0027] As used herein, "electronic device" refers to, but is not limited to, a device capable of receiving and / or transmitting communication signals via any one or more of the following connection means:

[0028] (1) via a wired line connection means, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection;

[0029] (2) via a wireless interface means, such as a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter.

[0030] An electronic device configured to communicate via a wireless interface can be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

[0031] (1) a satellite telephone or a cellular telephone;

[0032] (2) a Personal Communications System (PCS) terminal that can combine a cellular radio telephone with data processing, facsimile, and data communications capabilities;

[0033] (3) wireless telephones, pagers, Internet / Intranet access, Web browsers, notepads, calendars, Global Positioning System (GPS) receivers, etc.

[0034] (4) conventional laptop and / or palmtop receivers;

[0035] (5) conventional laptop and / or palmtop wireless telephony transceivers, etc.

[0036] The display module comprises a light-emitting layer, an optical modulation layer and a light-blocking layer. The light-emitting layer comprises a plurality of pixel units; the optical modulation layer is arranged on the light-emitting side of the light-emitting layer and is used for adjusting the light emitted by the pixel units. The light-blocking layer is arranged on the light-emitting side of the light-emitting layer, and the orthographic projection of the light-blocking layer on the light-emitting layer surrounds at least part of the pixel units.

[0037] In one embodiment, the light-emitting layer comprises a plurality of first pixel units arranged in an array, and a plurality of second pixel units arranged in an array together with the first pixel units. The orthographic projection of the light-blocking layer on the light-emitting layer surrounds the first pixel units and is staggered with the corresponding regions of the second pixel units.

[0038] In one embodiment, the display module has a first display state and a second display state. In the first display state, the first pixel units are turned on, and at least part of the second pixel units are turned off. In the second display state, the first pixel units and the second pixel units are both turned on.

[0039] In one embodiment, in the first display state, part of the second pixel units are turned on, and the number of the turned-on second pixel units is less than that in the second display state.

[0040] In one embodiment, in the first display state, the light-emitting brightness of the first pixel units is lower than that in the second display state.

[0041] In one embodiment, the distance between the orthographic projection of the light-blocking layer on the light-emitting layer and the pixel units surrounded by the light-blocking layer ranges from 0 to 6 um.

[0042] In one of the embodiments, the optical modulation layer comprises a color filter layer and a black matrix layer arranged in the same layer, the color filter layer comprises a plurality of color filter structures arranged in an array, the color filter structures are arranged corresponding to the pixel units, and the black matrix layer surrounds the color filter structures, and the orthographic projection of the black matrix layer on the light shielding layer coincides with the light shielding layer.

[0043] In one of the embodiments, the display module further comprises a microlens array layer arranged between the light shielding layer and the light emitting layer, and comprising a refractive layer and a plurality of microlens portions arranged in an array, the microlens portions are arranged corresponding to at least the pixel units surrounded by the light shielding layer, the refractive layer covers the microlens portions on the side of the microlens portions away from the light emitting layer, and the refractive index of the refractive layer is different from the refractive index of the microlens portions.

[0044] In one of the embodiments, the refractive index of the refractive layer is smaller than the refractive index of the microlens portions, and the orthographic projection of the microlens portions on the light emitting layer covers at least the pixel units surrounded by the light shielding layer.

[0045] In one of the embodiments, the orthographic projection of the microlens portions on the light emitting layer is between the orthographic projection of the light shielding layer on the light emitting layer and the pixel units.

[0046] In one of the embodiments, the side of the microlens portions away from the light emitting layer is convex.

[0047] In one of the embodiments, the microlens portions have a first surface away from the light emitting layer, the first surface comprises a middle portion and a peripheral portion, the middle portion is substantially planar, and the peripheral portion surrounds the middle portion and is arc-shaped.

[0048] In one of the embodiments, the refractive index of the refractive layer is greater than the refractive index of the microlens portions, and the orthographic projection of the microlens portions on the light emitting layer surrounds at least the pixel units surrounded by the light shielding layer.

[0049] In one of the embodiments, the inner contour of the orthographic projection of the microlens portions on the light emitting layer is between the orthographic projection of the light shielding layer on the light emitting layer and the pixel units.

[0050] In one of the embodiments, the refractive index of one of the microlens portions and the refractive layer is 1.6-1.8, and the refractive index of the other is 1.4-1.56.

[0051] In one of the embodiments, the size of the microlens portions in the direction perpendicular to the light emitting layer and pointing to the light shielding layer is 2um-4um.

[0052] In one of the embodiments, the microlens array layer is located between the optical modulation layer and the light-emitting layer.

[0053] In one of the embodiments, the light-shielding layer further comprises a light-transmitting bonding structure, which is located in the same layer as the light-shielding layer and fills the hollowed-out part of the light-shielding layer.

[0054] In one of the embodiments, the display module further comprises a bonding layer bonding the optical modulation layer and the light-shielding layer, and the light-transmitting bonding structure is connected to the bonding layer.

[0055] In one of the embodiments, the display module comprises an encapsulation layer, which is located on the light-emitting layer and on the light-emitting layer light-emitting side, and the encapsulation layer comprises two inorganic layers and an organic layer stacked between the two inorganic layers, and the thickness of the organic layer is greater than or equal to 10 um.

[0056] Another aspect of the present application provides a display screen, comprising a cover plate and a display module according to any one of the above embodiments, and the cover plate is located on the side of the optical modulation layer away from the light-emitting layer.

[0057] Still another aspect of the present application provides an electronic device, comprising a middle frame and a display screen according to the above, and the display screen is located on the middle frame.

[0058] Still another aspect of the present application provides a display control method for controlling the display state of a display module, the display module comprising a light-emitting layer and a light-shielding layer, the light-emitting layer comprising a plurality of first pixel units arranged in an array and a plurality of second pixel units arranged in an array together with the first pixel units, the orthogonal projection of the light-shielding layer on the light-emitting layer being offset from the area corresponding to the second pixel units and surrounding the first pixel units, and the display control method comprising:

[0059] controlling the switching of the first pixel units and the second pixel units, so that the display module can switch between a first display state and a second display state, wherein in the first display state, the first pixel units are open and at least part of the second pixel units are closed, and in the second display state, the first pixel units and the second pixel units are both open.

[0060] In one of the embodiments, in the first display state, part of the second pixel units are open, and the number of open second pixel units is less than that in the second display state.

[0061] In one of the embodiments, in the first display state, the light-emitting brightness of the first pixel units is less than that in the second display state.

[0062] Please refer to FIG. 1 and FIG. 2, which respectively show structural schematic diagrams of an electronic device 10 and a display module 20 in some embodiments of the present application. The display module 20 provided by the present application comprises a light-emitting layer 24, which comprises a plurality of pixel units 241 arranged in an array. The pixel units 241 can comprise red light-emitting units, green light-emitting units and blue light-emitting units arranged in an array, or can comprise other combinations of three primary color light-emitting units. The pixel units 241 can emit light to enable the display module 20 to have a display function. In the present application, the type of the display module 20 is not limited, and when the display module 20 adopts different types, the materials and structures of the pixel units 241 can also be different. The type of the display module 20 includes but is not limited to any suitable type of display screen such as a liquid crystal display (LCD) screen, an organic light-emitting diode (OLED) display screen, etc. In the embodiments of the present application, the OLED display screen is taken as an example, and the pixel units 241 can be organic light-emitting diode sub-pixels.

[0063] The display module 20 involved in the present application can form a display screen together with a cover plate (not shown in the figure) and be used in the electronic device 10. The cover plate includes but is not limited to a glass or plastic cover plate, which can serve as the outermost structure of the display screen and be bonded to the display module to provide protection for the display module. The electronic device includes but is not limited to any suitable electronic product such as a smart phone, a tablet computer, an e-reader, etc. The present application takes a smart phone as an example of the electronic device 10, which can comprise a middle frame 11 and a back plate. The display module 20 and the back plate are respectively arranged on the two sides of the middle frame 11 opposite to each other. According to different layout designs of the electronic device 10, the size and structure of the display module 20 can also be different. For example, the electronic device 10 includes but is not limited to any suitable smart phone such as a water drop screen, a notch screen, a hole screen, etc.

[0064] Referring to FIG. 2, in some embodiments, the display module 20 comprises a substrate 21, a buffer layer 22, a planarization layer 23, a light-emitting layer 24, an encapsulation layer 25, a touch layer 26, a bonding layer 27, an optical modulation layer 28 and a cover plate which are sequentially stacked. The material of the substrate 21 includes but is not limited to polyimide (PI) or the like. The material of the buffer layer 22 includes but is not limited to silicon nitride (SiNx), silicon oxide (SiOx) or silicon oxynitride (SiOxNx) or the like. The material of the planarization layer 23 includes but is not limited to any suitable organic resin material. The encapsulation layer 25 can adopt a TFT encapsulation technology. The touch layer 26 can be provided with a touch sensing circuit for sensing the touch action of a user. The bonding layer 27 can be any suitable bonding structure such as optical glue or the like. The optical modulation layer 28 is used to adjust at least part of the light emitted by the pixel units 241 to be emitted after adjustment to meet different display requirements. The optical modulation layer 28 includes but is not limited to a polarizing plate or a color filter film or the like.

[0065] Of course, the above is only an example of the layer structure of the display module 20 in one of the embodiments, and the display module 20 can also include any other applicable layer structure to achieve more functions. The above-mentioned layer structures can also be omitted or replaced by other layer structures capable of achieving the corresponding functions. The arrangement order of the above-mentioned layer structures can also be adjusted as needed. In this application, the description of the lamination of two layer structures includes the following cases: the two layer structures are in contact and stacked, the two layer structures are stacked through an intermediate layer structure, and the two layer structures are spaced apart by a space gap.

[0066] Further, referring to FIG. 2, in some embodiments, the display module 20 further includes a light shielding layer 29, which is arranged on the light emitting side of the light emitting layer 24, for example, is laminated between the adhesive layer 27 and the touch layer 26, or is laminated between any two applicable layer structures on the side of the light emitting layer 24 facing the optical modulation layer 28. The light shielding layer 29 includes a light shielding matrix 291, and the orthographic projection of the light shielding matrix 291 on the light emitting layer 24 surrounds at least part of the pixel unit 241. The material of the light shielding matrix 291 includes, but is not limited to, any applicable material capable of absorbing or shielding light, such as ink, black resin, chromium, molybdenum, etc. It can be understood that since the light beam emitted by the pixel unit 241 has divergence, the divergence angle of the light closer to the edge of the light beam is larger, and the light shielding matrix 291 surrounds at least part of the pixel unit 241, the light shielding matrix 291 can absorb part of the light at the edge of the light beam emitted by the pixel unit 241 surrounded by the light shielding matrix 291, thereby increasing the edge brightness attenuation of the light beam emitted by the pixel unit 241 and reducing the edge brightness.

[0067] The display module 20 described above, by setting the light shielding matrix 291 around at least part of the pixel units 241, the light shielding matrix 291 can shield part of the light emitted by the pixel units 241 around the pixel units 241, thereby increasing the brightness attenuation of the light beam emitted by the pixel units 241 surrounded by the light shielding matrix 291 at the edge, so that it is difficult to see the light emitted by the pixel units 241 in a large angle field of view, and the anti-peeping function can be realized. Moreover, by replacing the traditional anti-peeping film with the light shielding layer 29, the hollow parts of the light shielding matrix 291 will not affect the normal light emission of the pixel units 241, and while realizing the anti-peeping function, it is also conducive to reducing the influence of the light shielding matrix 291 on the display quality of the display module 20. The setting of the light shielding layer 29 can also adapt to different designs of the display module 20 such as curved screens, avoiding the influence of different structural designs of the display module 20 on the applicability of the anti-peeping film. The use of the light shielding layer 29 instead of the anti-peeping film has the advantages of simple process, and is conducive to reducing the thickness of the display module 20 and realizing miniaturization design. Compared with the traditional anti-peeping film, the light shielding layer 29 has lower influence on the light emission efficiency, and is also conducive to maintaining good light emission efficiency of the display module 20.

[0068] In combination with FIG. 2 and FIG. 3, in some embodiments, the opening radius of the pixel unit 241 is 4-15um, for example, 5um, 10um or 15um, etc. In some embodiments, the distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the opening profile of the pixel unit 241 surrounded by the light-shielding matrix 291 ranges from 0-6um, when the above value is 0, it can be considered that the part of the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 coincides with the opening profile of the pixel unit 241. It should be noted that the distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the pixel unit 241 surrounded by the light-shielding matrix 291 can be understood as the distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the opening profile of the pixel unit 241 in the radial direction of the pixel unit 241. FIG. 3 shows the effect of the setting of the light-shielding layer 29 on the luminance decay of the pixel unit 241 surrounded by the light-shielding layer 29 when the vertical distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the opening profile of the pixel unit 241 surrounded by the light-shielding matrix 291 is unchanged. Among them, the abscissa represents the field of view angle, the ordinate represents the ratio of the luminance of the light ray at the corresponding field of view angle to the central field of view light (main light), and different curves respectively represent the cases of not setting the light-shielding layer 29 and setting the light-shielding layer 29 when the pixel opening radius is 5um, and the cases of not setting the light-shielding layer 29 and setting the light-shielding layer 29 when the pixel opening radius is 10um. As can be seen from FIG. 3, the setting of the light-shielding layer 29 can increase the luminance decay of the pixel unit 241 at a large viewing angle (for example, greater than 35°), thereby effectively realizing the anti-peeping function, and the smaller the opening radius of the pixel unit 241, the more obvious the effect of the light-shielding layer 29 on increasing the luminance decay. Therefore, by adjusting the vertical distance between the light-shielding matrix 291 and the corresponding pixel unit 241, the anti-peeping effect of the display module 20 can be flexibly adjusted, the adjustment margin is large, and the design and preparation are simple.

[0069] In combination with FIG. 2 and FIG. 4, FIG. 4 shows the influence of the change of the vertical distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the opening contour of the pixel unit 241 surrounded by the light-shielding matrix 291 on the large viewing angle luminance decay in some embodiments, where different curves respectively represent different values of the vertical distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the opening contour of the pixel unit 241 surrounded by the light-shielding matrix 291, the abscissa represents the viewing angle, and the ordinate represents the luminance decay. As can be seen from FIG. 4, the smaller the vertical distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the opening contour of the pixel unit 241 surrounded by the light-shielding matrix 291, the more obvious the large viewing angle luminance decay, and the better the anti-peeping effect. The opening radius of the pixel unit 241 and the vertical distance between the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 and the opening contour of the pixel unit 241 surrounded by the light-shielding matrix 291 can be adaptively set according to different anti-peeping requirements, which are not specifically limited in the present application.

[0070] In combination with FIG. 2, FIG. 5 and FIG. 6, in some embodiments, the light-emitting layer 24 includes a plurality of first pixel units 2411 arranged in an array, and a plurality of second pixel units 2412 arranged in an array together with the first pixel units 2411, the orthographic projection of the light-shielding matrix 291 on the light-emitting layer 24 is staggered with the area corresponding to the second pixel unit 2412 and surrounds the first pixel unit 2411. FIG. 6 shows a structural schematic diagram of the display module 20 corresponding to the position of the second pixel unit 2412, the light-shielding matrix 291 is staggered with the area where the second pixel unit 2412 is located, and the large-angle light emitted by the second pixel unit 2412 will not be blocked by the light-shielding matrix 291 to cause the increase of luminance decay. In the embodiment shown in FIG. 5, the first pixel unit 2411 is schematically shown by the middle color-filled square, and the second pixel unit 2412 is represented by the square filled with red, green or blue color.

[0071] Further, in combination with FIG. 7 and FIG. 8, in some embodiments, the display module 20 has a first display state and a second display state, in the first display state, the first pixel unit 2411 is open, and the second pixel unit 2412 is closed. In the second display state, both the first pixel unit 2411 and the second pixel unit 2412 are open. Thus, in the first display state, the open pixel unit 241 has a serious luminance attenuation at a large viewing angle (for example, greater than 35° viewing angle), which can achieve good anti-peeping function, while in the second display state, the number of open pixel units 241 is larger, and the pixel density (PPI) of the display module 20 is larger, so as to achieve better display quality when anti-peeping is not required, and meet the use requirements of different scenes. It should be noted that in this application, it is understood that the description of the opening of a certain pixel unit 241 means that the pixel unit 241 is activated or in an acceptable signal, preparation state, for example, it means that the pixel unit 241 can receive a data signal to determine the color and brightness information of its display. When a certain pixel unit 241 is open, the pixel unit 241 can emit light or can not emit light, which is set according to the light emitting pixel requirement of the display picture.

[0072] In this embodiment, in the first display state, only the first pixel unit 2411 can be open to achieve better anti-peeping effect. In other embodiments, in the first display state, part of the second pixel unit 2412 can also be open, and the number of open second pixel units 2412 in the first display state is less than that in the second display state. Thus, in the first display state, part of the second pixel unit 2412 can also assist the first pixel unit 2411 in displaying, so as to improve the PPI of the display module 20, and thus achieve anti-peeping function while improving display quality. In some embodiments, in the first display state, the light output brightness of the first pixel unit 2411 is less than that of the first pixel unit 2411 in the second display state. By reducing the light output brightness of the first pixel unit 2411 in the first display state, the ability of the human eye to distinguish large-angle light can be reduced, thereby further improving the anti-peeping effect. It should be noted that, relative to the second display state, the means for reducing the light output brightness of the first pixel unit 2411 in the first display state includes but is not limited to reducing the light output efficiency of the first pixel unit 2411 in the first display state, and the means for reducing the light output efficiency of the first pixel unit 2411 in the first display state includes but is not limited to reducing the current or voltage applied to the first pixel unit 2411, changing the working state of the thin film transistor in the first pixel unit 2411, using pulse width modulation, and any other applicable adjustment method.

[0073] It should be noted that the array of the pixel units 241 opened by the display module 20 in the first display state and the second display state can each independently realize the display function, so that the display module 20 can meet the display requirement in different display states. FIGS. 5, 7 and 8 only show the type and arrangement matrix of the pixel units 241 of the display module 20 in one embodiment, and in fact, the pixel units 241 can adopt any applicable three-color light-emitting units and form any applicable arrangement array, as long as the pixel units 241 opened by the display module 20 in the first display state and the second display state can meet the realization of the display function, and the arrangement matrix of the pixel units 241 is not specifically limited in the present application.

[0074] In the embodiments shown in FIGS. 2 and 6, the polarizer is taken as an example of the optical modulation layer 28. Referring to FIG. 9, in some embodiments, the optical modulation layer 28 can also be a color filter film, which includes a color filter layer 281 and a black matrix layer 282 arranged in the same layer. The color filter layer 281 includes a plurality of color filter structures 2811 arranged in an array, and the color filter structures 2811 are arranged opposite to the pixel units 241 one by one. For example, the color filter structures 2811 can include red color resist corresponding to the red light-emitting units, green color resist corresponding to the green light-emitting units, and blue color resist corresponding to the blue light-emitting units. The black matrix layer 282 surrounds the color filter structures 2811, and the orthographic projection of the black matrix layer 282 on the light-shielding layer 29 coincides with the light-shielding matrix 291. The material of the black matrix layer 282 can be designed according to the material of the light-shielding layer 29, as long as it can block light. As can be seen from FIG. 9, the light-shielding layer 29 is arranged in the display module 20 in which the color filter film is arranged as the optical modulation layer 28, and the black matrix of the light-shielding layer 29 can cooperate with the black matrix layer 282 of the optical modulation layer 28 to simultaneously block part of the large-angle light, thereby being beneficial to further increasing the brightness attenuation of the large-view-angle light and being beneficial to improving the anti-peeping effect of the display module 20.

[0075] In the embodiments shown in the drawings of the present application, the light-shielding layer 29 is arranged between the optical modulation layer 28 and the light-emitting layer 24, for example, between the adhesion layer 27 and the touch layer 26. Of course, the touch layer 26 can also be arranged on the side of the optical modulation layer 28 away from the light-emitting layer 24, and the optical modulation layer 28 can also be arranged between any other two applicable layer structures, as long as it can be located on the side of the light-emitting layer 24 facing the optical modulation layer 28 to block part of the light emitted by the pixel units 241.

[0076] Please refer to FIG. 10 and FIG. 11, in some embodiments, the display module 20 further comprises a microlens array layer 31, which is arranged between the light shielding layer 29 and the light emitting layer 24, and comprises a plurality of microlens portions 311 arranged in an array and a refractive layer 312. The plurality of microlens portions 311 are arranged one-to-one corresponding to the plurality of pixel units 241, and the refractive layer 312 covers the microlens portions 311 on the side of the microlens portions 311 away from the light emitting layer 24. For example, the microlens portions 311 are arranged on the surface of the packaging layer 25 away from the light emitting layer 24, and the refractive layer 312 is laid on the packaging layer 25 and covers the microlens portions 311, and the refractive layer 312 fills the gap between adjacent two microlens portions 311. The refractive index of the refractive layer 312 is different from the refractive index of the microlens portions 311, so that the microlens array layer 31 can converge at least part of the light emitted by the pixel units 241. It can be understood that at least part of the light emitted by the pixel units 241 passes through the microlens portions 311, the refractive layer 312 and the light shielding layer 29 in turn and then exits the display module 20. The microlens array layer 31 is arranged in cooperation with the light shielding layer 29, the microlens array layer 31 can converge the light emitted by the pixel units 241, reduce the divergence angle of the light beam, reduce the brightness of the light at a large viewing angle, thereby reducing the light component blocked by the light shielding layer 29, and improving the brightness of the light exiting through the light shielding layer 29. Thus, the microlens array layer 31 and the refractive layer 312 can cooperate to achieve the anti-peeping function while improving the overall display brightness and light extraction efficiency, optimizing the energy consumption of the display module 20, and improving the display quality and service life of the display module 20.

[0077] It should be noted that in the embodiments shown in FIG. 10 and FIG. 11, only the pixel units 241 surrounded by the light shielding matrix 291 are shown, and the microlens portions 311 can be arranged only corresponding to the pixel units 241 surrounded by the light shielding matrix 291, i.e. corresponding to the first pixel units 2411, to cooperate with the light shielding matrix 291 to achieve the anti-peeping effect while optimizing the light extraction efficiency and energy consumption of the display module 20. Of course, the microlens portions 311 can also be arranged corresponding to the first pixel units 2411 and the second pixel units 2412, wherein the microlens portions 311 arranged corresponding to the first pixel units 2411 can cooperate with the light shielding matrix 291 to optimize the light extraction efficiency and energy consumption, and the microlens portions 311 arranged corresponding to the second pixel units 2412 can reduce the divergence degree of the light and improve the uniformity of the color of the light, thereby improving the display quality of the display module 20, and the reduction of the divergence degree of the light is also conducive to assisting the implementation of the anti-peeping function.

[0078] The structure and refractive index relationship of the light-refracting layer 312 and the microlens part 311 are not limited, as long as the microlens array layer 31 can at least converge the light emitted by the first pixel unit 2411. Referring to FIG. 10, in some embodiments, the refractive index of the material of the light-refracting layer 312 is less than the refractive index of the material of the microlens part 311, and the orthographic projection of the microlens part 311 on the light-emitting layer 24 at least covers the first pixel unit 2411. It can be understood that, in the present embodiment, when the light is emitted from the microlens part 311 to the light-refracting layer 312, that is, from the optically dense medium to the optically sparse medium, refraction occurs at the junction of the microlens part 311 and the light-refracting layer 312, which can reduce the exit angle of the light, for example, reduce the angle between the light and the axis of the microlens part 311, thereby achieving the effect of converging the light. The light converging effect is achieved by matching the refractive indices of the microlens part 311 and the light-refracting layer 312, rather than by reflecting the light. While converging the light, the light can maintain good uniformity, which is beneficial to improving the color uniformity of the light, thereby improving the color cast phenomenon at a large-angle viewing angle, for example, improving the color cast phenomenon at a 45°-80° viewing angle, balancing the color at a small-angle viewing angle and at a large viewing angle, and being beneficial to improving the display quality of the display module 20.

[0079] In some embodiments, when the microlens part 311 is arranged corresponding to the first pixel unit 2411, the orthographic projection of the microlens part 311 on the light-emitting layer 24 is between the orthographic projection of the light-blocking matrix 291 on the light-emitting layer 24 and the opening of the first pixel unit 2411. Thus, the microlens part 311 and the light-blocking matrix 291 can form a good cooperation, the microlens part 311 can sufficiently converge the light emitted by the first pixel unit 2411 and reduce the light blocked by the light-blocking matrix 291, effectively improving the light extraction efficiency of the display module 20, while the light-blocking matrix 291 can also effectively improve the luminance decay of the light at a large viewing angle, cooperating with the converging effect of the microlens part 311 on the light to effectively realize the anti-peeping function.

[0080] In some embodiments, the side of the microlens part 311 away from the light-emitting layer 24 is convex, in other words, when the surface of the encapsulation layer 25 away from the light-emitting layer 24 and used for arranging the microlens part 311 is a flat surface, the thickness of the middle part of the microlens part 311 is greater than the thickness of the edge part. Thus, the microlens part 311 is roughly in the shape of a convex lens, which better cooperates with the refractive index relationship of the microlens part 311 and the light-refracting layer 312 to achieve stronger light converging capability, thereby being able to further reduce the probability of the light being emitted to the light-blocking matrix 291 and improve the luminance decay at a large viewing angle, which is beneficial to reducing the power consumption of the display module 20 and realizing a better anti-peeping screen design.

[0081] In some embodiments, the convex surface of the microlens portion 311 is defined as a first surface 3111, which includes a middle portion and a peripheral portion arranged around the periphery of the middle portion. The middle portion is substantially planar, for example substantially parallel to the light emitting surface of the first pixel unit 2411, and the peripheral portion is arc-shaped. In this way, while improving the light condensing effect of the microlens portion 311, the incident and exit angles of the large-angle light and the small-angle light can be effectively balanced, the uniformity of the light color is improved, and thus the display quality of the display module 20 is improved, and the color deviation phenomenon of the large-angle viewing angle is improved. When the peripheral portion is arc-shaped, when the microlens portion 311 is prepared by etching process, a gray-tone mask can be used for exposure processing. The gray-tone mask controls different exposure degrees of different parts, for example, the exposure degree is higher or lower as the position is closer to the edge, so as to form the arc-shaped peripheral portion. Of course, the shape of the microlens portion 311 can also have other arbitrary applicable designs, as long as it can cooperate with the light refraction layer 312 to effectively converge light.

[0082] Referring to FIG. 12, in other embodiments, the refractive index of the light refraction layer 312 is greater than the refractive index of the microlens portion 311, and the orthographic projection of the microlens portion 311 on the light emitting layer 24 surrounds the corresponding pixel unit 241, for example, only surrounds the first pixel unit 2411, or surrounds the first pixel unit 2411 and the second pixel unit 2412. It can be understood that in this embodiment, at least part of the large-angle light emitted by the pixel unit 241 is incident on the microlens array layer 31, first incident on the light refraction layer 312, and then incident on the surface of the microlens portion 311. It can be considered that the light is emitted from a dense medium to a sparse medium, which is beneficial to reduce the total reflection critical angle of the light on the surface of the microlens portion 311. Moreover, since the large-angle light is incident on the outer surface of the microlens portion 311, the incident angle of the large-angle light on the microlens portion 311 is generally greater than the total reflection critical angle, and thus the large-angle light can be reflected by the outer surface of the microlens portion 311 and incident on the light shielding layer 29. In the process of total reflection, the convergence of the large-angle light is achieved, which is also beneficial to reduce the light absorbed by the light shielding layer 29, and optimizes the light efficiency and energy consumption of the display module 20 while achieving the anti-peeping effect.

[0083] In some embodiments, the inner contour of the orthographic projection of the microlens portion 311 on the light-emitting layer 24 is between the orthographic projection of the light-blocking matrix 291 on the light-emitting layer 24 and the corresponding pixel unit 241. In this way, the microlens portion 311 and the light-blocking matrix 291 can form a good cooperation, the microlens portion 311 can sufficiently converge the light emitted by the pixel unit 241 and reduce the light blocked by the light-blocking matrix 291, effectively improving the light extraction efficiency of the display module 20, while the light-blocking matrix 291 can also effectively improve the brightness attenuation of the large-angle light, cooperating with the converging effect of the microlens portion 311 on the light to effectively realize the anti-peeping function. In the present embodiment, the shape of the microlens portion 311 is not limited, as long as it can converge light by means of total reflection. For example, the cross section of the microlens portion 311 can be substantially trapezoidal, and in the direction of the light-emitting layer 24 pointing to the light-blocking layer 29, the radial size of the microlens portion 311 gradually decreases to form an inclined surface for reflecting light.

[0084] In some embodiments, the refractive index of one of the microlens portion 311 and the light-refracting layer 312 is 1.6-1.8, and the refractive index of the other is 1.4-1.56. For example, referring to FIG. 10, when the microlens portion 311 and the light-refracting layer 312 converge light by refraction, the refractive index of the microlens portion 311 is 1.6-1.8, and the refractive index of the light-refracting layer 312 is 1.4-1.56. In the embodiment shown in FIG. 12, when the microlens portion 311 converges light by total reflection, the refractive indices of the microlens portion 311 and the light-refracting layer 312 are opposite to those of the embodiment shown in FIG. 10. The material of the microlens portion 311 and the light-refracting layer 312 includes but is not limited to any suitable material such as organic glass, which is beneficial to improve the drop resistance and chemical stability of the display module 20.

[0085] It can be understood that the larger the size of the microlens portion 311 in the direction in which the light-emitting layer 24 is vertically directed to the light-refracting layer 312, that is, the height dimension of the microlens portion 311, the more obvious the converging effect on the light rays, and the stronger the effect of improving the light extraction efficiency and achieving the anti-peeping function that can be achieved in cooperation with the light-blocking layer 29. In some embodiments, the size of the microlens portion 311 in the direction in which the light-emitting layer 24 is directed to the light-blocking layer 29 is 2-4 um. In this way, the microlens portion 311 can effectively converge light rays, and at the same time, the thickness of the microlens array layer 31 is not too large, which is beneficial to compress the thickness dimension of the display module 20. In some embodiments, in the preparation of the microlens portion 311, the raw material for forming the microlens portion 311 can be coated on the packaging layer 25 by coating process, and then a plurality of microlens portions 311 arranged in an array are formed by etching process. The coating process can better control the thickness of the microlens portion 311, thereby facilitating the compression of the thickness dimension of the microlens array layer 31. The light-refracting layer 312 can be prepared on the side of the microlens portion 311 and the packaging layer 25 away from the light-emitting layer 24 by any suitable process such as coating, inkjet printing, etc. after the preparation of the microlens portion 311.

[0086] In the embodiments shown in FIGS. 10 and 12, the optical modulation layer 28 adopts a polarizing sheet. Referring to FIG. 13, when the display module 20 is provided with a microlens array layer 31, the optical modulation layer 28 can also adopt a color filter film, and the specific structure of the color filter film can be referred to the above description. The microlens array layer 31 is located on the side of the optical modulation layer 28 and the light-blocking layer 29 facing the light-emitting layer 24, and the black matrix layer 282 of the optical modulation layer 28 and the light-blocking matrix 291 of the light-blocking layer 29 can jointly shield the large-angle light rays in the light beam converged by the microlens array layer 31, further improving the anti-peeping performance of the display module 20. Moreover, the reflectivity of the microlens array layer 31 to ambient light is generally higher than that of the optical modulation layer 28, and arranging the microlens array layer 31 on the side of the optical modulation layer 28 facing the light-emitting layer 24 makes the microlens array layer 31 away from the surface of the display module 20, such as away from the cover plate, so that the arrangement of the microlens array layer 31 does not excessively increase the reflectivity of the display module 20 to external light, which is beneficial to reduce the reflection phenomenon of the display module 20, avoid the reflection phenomenon affecting the display quality, so that the display module 20 can obtain better display quality at a lower display brightness, and also is beneficial to reduce the energy consumption of the display module 20.

[0087] It should be noted that, in the drawings of the present application, the opening shape of each pixel unit 241 is taken as an example of a circular shape, and in other embodiments, the opening shape of each pixel unit 241 can also be any suitable shape such as an elliptical shape, a square shape, a rectangular shape, a diamond shape, etc., and the shapes of the microlens portion 311, the light-blocking matrix 291, and the color filter structure 2811 can also be adjusted according to the opening shape of the corresponding pixel unit 241. In the drawings of the present application, each pixel unit 241 corresponds to one microlens portion 311, and in other embodiments, each pixel unit 241 can also correspond to multiple microlens portions 311, or one microlens portion 311 can correspond to multiple pixel units 241.

[0088] Please also refer to FIG. 2, in some embodiments, the light-blocking layer 29 further includes a light-transmitting bonding structure 292, the material of the light-transmitting bonding structure 292 includes but is not limited to any suitable adhesive structure such as optical adhesive, the light-transmitting bonding structure 292 is disposed in the same layer as the light-blocking matrix 291 and fills the hollowed-out part of the light-blocking matrix 291, and the projection of the light-transmitting bonding structure 292 on the light-emitting layer 24 covers the first pixel unit 2411 and the second pixel unit 2412. The light-transmitting bonding structure 292 can provide support for the light-blocking layer 29 and improve the connection strength between the light-blocking layer 29 and the adjacent two layer structures. In some embodiments, when the light-blocking layer 29 is disposed between the touch layer 26 and the adhesion layer 27, the light-transmitting bonding structure 292 is connected to the touch layer 26 and the adhesion layer 27, and the light-transmitting bonding structure 292 and the adhesion layer 27 can form an integrated structure through one-time coating or two-time coating process, which is beneficial to improving the structural reliability of the display module 20.

[0089] In some embodiments, the encapsulation layer 25 includes two inorganic layers 251 and an organic layer 252 stacked between the two inorganic layers 251. The materials of the two inorganic layers 251 can be the same or different inorganic materials, and the material of the inorganic layer 251 includes but is not limited to one or more of silicon oxide (SiOx), silicon nitride (SiNx), silicon oxynitride (SiOxNy), ZnSe, ZnO, Sb2O3, Al2O3, In2O3, or SnO2, and the material of the organic layer 252 includes but is not limited to an acrylate polymer. The organic layer 252 can block the penetration of external moisture or oxygen, thereby providing encapsulation protection for the light-emitting layer 24, and the organic layer 252 can also flatten the inorganic layer 251 by blocking the defects of the inorganic layer 251, thereby improving the light extraction efficiency of the display module 20.

[0090] In some embodiments, the thickness of the organic layer 252 is greater than or equal to 10 um, for example, can be 10 um, 12 um, 14 um or 18 um, etc. It can be understood that the thickness of the encapsulation layer 25 affects the exit angle of light in the encapsulation layer 25, the greater the thickness of the encapsulation layer 25, the more light of large angle exits from the encapsulation layer 25. Therefore, by setting the thickness of the organic layer 252 to be 12 um or more, the probability of large-angle light being blocked by the light-blocking matrix 291 can be improved, the brightness attenuation of the large-angle view can be improved, thereby effectively realizing the design of the privacy screen, and increasing the thickness of the organic layer 252 is also beneficial to avoid that the thickness of the inorganic layer 251 is too large to affect the flatness of the encapsulation layer 25.

[0091] Please refer to the following table 1, the following table 1 shows the light efficiency and brightness attenuation of the pixel unit 241 corresponding to the light-blocking layer 29 and the microlens array. Among them, the first row of "only set the microlens array layer 31" corresponds to the case of setting the microlens array layer 31 and omitting the light-blocking layer 29, "only set the light-blocking layer 29" corresponds to the case of setting the light-blocking layer 29 without setting the microlens array, "microlens array layer 31 + light-blocking layer 29" corresponds to the case of setting the microlens array layer 31 and the light-blocking layer 29 at the same time. The "opening size" in the first column corresponds to the opening radius of the pixel unit 241, "efficiency" corresponds to the efficiency improvement ratio of the corresponding pixel unit 241 compared with the pixel unit 241 without setting the microlens array layer 31, and the same row value corresponding to each view angle is the relative brightness attenuation ratio of the corresponding view angle to the main light.

[0092] Table 1

[0093] It can be seen from table 1 and figures 3 and 4 that when the light-blocking layer 29 is set, the light-blocking layer 29 can effectively block light at a view angle of 15° or more of the corresponding first pixel unit 2411, when the opening radius of the pixel unit 241 is 5 um, the brightness attenuation at a view angle of 35° is 7%, and only setting the light-blocking layer 29 can realize the 35° anti-peeping effect. On the basis of setting the light-blocking layer 29, further setting the microlens array layer 31 can improve the anti-peeping effect, and also be beneficial to improve the light efficiency, and the smaller the opening radius of the pixel unit 241, the more obvious the improvement of the light efficiency. For example, when the opening radius of the pixel unit 241 is 10 um, the brightness at a view angle of 35° is reduced from 24% to 19%. When the opening radius of the pixel unit 241 is 15 um, the light efficiency is improved by 15%, when the opening radius of the pixel unit 241 is 10 um, the light efficiency is improved by 36%, and when the opening radius of the pixel unit 241 is 5 um, the light efficiency is improved by 40%.

[0094] Based on the display module 20 in any of the above embodiments, the application further provides a display control method for controlling the display state of the display module 20, the display control method comprising:

[0095] controlling the switches of the first pixel unit 2411 and the second pixel unit 2412 to enable the display module 20 to switch between the first display state and the second display state, wherein in the first display state, the first pixel unit 2411 is turned on and at least part of the second pixel unit 2412 is turned off, and in the second display state, both the first pixel unit 2411 and the second pixel unit 2412 are turned on.

[0096] In the first display state, only the first pixel unit 2411 can be turned on to achieve good anti-peeping effect, or part of the second pixel unit 2412 can be turned on, and the number of the turned-on second pixel unit 2412 is less than that in the second display state, so as to achieve the anti-peeping effect while improving the PPI. In the first display state, the light output brightness of the first pixel unit 2411 is less than that in the second display state. It can be understood that in the first display state, the display module 20 can achieve effective anti-peeping effect, and in the second display state, the display module 20 can have higher PPI and achieve good display quality, thereby meeting the use requirements of different scenes and improving the application range of the display module 20.

[0097] In some embodiments, the display module 20 can further include a control element (not shown in the figure), which can be a processor in the display module 20 or a chip separately set for display function control. The control element can control the switches of the first pixel unit 2411 and the second pixel unit 2412 to enable the display module 20 to switch between the first display state and the second display state. In some embodiments, the switches of the first pixel unit 2411 and the second pixel unit 2412 can be controlled by a sub-pixel rendering (SRP) algorithm to realize the switching between the first display state and the second display state. In some embodiments, to prevent the display module 20 from causing a large difference in service life between the first pixel unit 2411 and the second pixel unit 2412 due to the use of the first display state for a much longer time than the second display state, causing the generation of burn-in and other phenomena, the pixel shift, brightness adjustment, color balance adjustment or image refresh function can be realized by a Deburn-in algorithm to solve or alleviate the burn-in problem and optimize the display quality and service life of the display module 20.

[0098] Referring to FIG. 14, FIG. 14 is a structural schematic diagram of an electronic device 10 provided by an embodiment of the present application. The electronic device 10 can include a radio frequency (RF) circuit 501, a memory 502 including one or more computer readable storage media, an input unit 503, a display unit 504, a sensor 505, an audio circuit 506, a wireless fidelity (WiFi) module 507, a processor 508 including one or more processing cores, and a power supply 509, and the like. Those skilled in the art can understand that the structure of the electronic device 10 shown in FIG. 14 does not constitute a limitation on the electronic device 10, and can include more or fewer components than those shown, or combine certain components, or different arrangement of components.

[0099] The radio frequency circuit 501 can be used to receive and send information or signals in a call process, in particular, after receiving the downlink information of the base station, the radio frequency circuit 501 delivers it to the processor 508 for processing; in addition, it sends data related to the uplink to the base station. Generally, the radio frequency circuit 501 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a subscriber identity module (SIM) card, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, and the like. In addition, the radio frequency circuit 501 can also communicate with the network and other devices through wireless communication. The wireless communication can use any communication standard or protocol, including but not limited to global system for mobile communication (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), long term evolution (LTE), email, short messaging service (SMS), and the like.

[0100] The memory 502 can be used to store applications and data. The applications stored in the memory 502 include executable code. The applications can constitute various functional modules. The processor 508 executes various functional applications and data processing by running the applications stored in the memory 502. The memory 502 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, at least one application required by a function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the electronic device 10 (such as audio data, a phone book, etc.), and the like. In addition, the memory 502 can include a high-speed random access memory, and can further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory 502 can further include a memory controller to provide the processor 508 and the input unit 503 with access to the memory 502.

[0101] The input unit 503 can be used to receive inputted numbers, character information or user feature information (such as a fingerprint), and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. Specifically, in one specific embodiment, the input unit 503 can include a touch-sensitive surface and other input devices. The touch-sensitive surface, also called a touch display screen or touchpad, can collect user touch operations (such as user operations using a finger, a stylus, or any suitable object or accessory on or near the touch-sensitive surface) on or near it, and drive the corresponding connection device according to the pre-set program. Optionally, the touch-sensitive surface can include two parts of a touch detection device and a touch controller. The touch detection device detects the user's touch position and detects the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into touch coordinates, and sends it to the processor 508, and can also receive commands from the processor 508 and execute them.

[0102] The display unit 504 can be used to display information input by a user or provided to the user, as well as various graphical user interfaces of the electronic device 10, which can be composed of graphics, text, icons, video, and any combination thereof. The display unit 504 can include a display panel. Optionally, the display panel can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. Further, a touch-sensitive surface can cover the display panel, which, when a touch operation is detected thereon or in the vicinity thereof, transmits to the processor 508 to determine the type of touch event, and then the processor 508 provides corresponding visual output on the display panel according to the type of touch event. Although in FIG. 14, the touch-sensitive surface and the display panel are implemented as two independent components to realize input and output functions, in some embodiments, the touch-sensitive surface can be integrated with the display panel to realize input and output functions.

[0103] The electronic device 10 can also include at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor can include an ambient light sensor that can adjust the brightness of the display panel according to the brightness of ambient light, and a proximity sensor that can turn off the display panel and / or backlight when the electronic device 10 is moved to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the magnitude of acceleration in each direction (generally three axes), and when at rest, can detect the magnitude and direction of gravity, which can be used for applications such as identifying the posture of the phone (such as switching between landscape and portrait screens, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometers, tapping), and the like. As for other sensors that the electronic device 10 can also be configured, such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, will not be described here.

[0104] The audio circuit 506 can provide an audio interface between the user and the electronic device 10 through the speaker and the microphone. The audio circuit 506 can convert received audio data into an electrical signal, transmit it to the speaker, and convert it into a sound signal output by the speaker. On the other hand, the microphone collects sound signals and converts them into electrical signals, which are received by the audio circuit 506 and converted into audio data. The audio data is output to the processor 508 for processing, and then transmitted to another electronic device 10 via the radio frequency circuit 501, or output to the memory 502 for further processing. The audio circuit 506 can also include a headset jack to provide communication between an external headset and the electronic device 10.

[0105] Wireless Fidelity (WiFi) belongs to short-range wireless transmission technology, and the electronic device 10 can help users to send and receive e-mails, browse web pages and access streaming media, etc. through the wireless fidelity module 507, which provides users with wireless broadband Internet access. Although the wireless fidelity module 507 is shown in FIG. 14, it is understood that it does not belong to the essential components of the electronic device 10, and can be omitted as needed without changing the essence of the application.

[0106] The processor 508 is the control center of the electronic device 10, which connects all parts of the electronic device 10 through various interfaces and lines, executes various functions of the electronic device 10 and processes data by running or executing application programs stored in the memory 502 and calling data stored in the memory 502, thereby overall monitoring the electronic device 10. Optionally, the processor 508 can include one or more processing cores; preferably, the processor 508 can integrate an application processor and a modem processor, wherein the application processor mainly processes operating systems, user interfaces and application programs, etc., and the modem processor mainly processes wireless communication. It is understood that the above-mentioned modem processor can also not be integrated into the processor 508.

[0107] The electronic device 10 further includes a power supply 509 for supplying power to various components. Preferably, the power supply 509 can be logically connected to the processor 508 through a power management system, so as to realize the functions of managing charging, discharging and power consumption management, etc. through the power management system. The power supply 509 can also include one or more than one direct or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power state indicator and any other components.

[0108] Although not shown in FIG. 14, the electronic device 10 can also include a Bluetooth module, etc., which will not be described here. In specific implementation, the above various modules can be implemented as independent entities, or can be combined as the same or several entities, and the specific implementation of the above various modules can refer to the method embodiments described above, which will not be described here.

[0109] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered as the scope of the present disclosure.

[0110] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A display module, comprising: a light-emitting layer comprising a plurality of pixel units; an optical modulation layer disposed on a light-outgoing side of the light-emitting layer and configured to adjust light emitted by the pixel units; and a light-blocking layer disposed on the light-outgoing side of the light-emitting layer, wherein a projection of the light-blocking layer on the light-emitting layer surrounds at least part of the pixel units. The light-emitting layer comprises a plurality of first pixel units arranged in an array and a plurality of second pixel units arranged in an array together with the first pixel units, wherein the projection of the light-blocking layer on the light-emitting layer surrounds the first pixel units and is offset from a region corresponding to the second pixel units.

2. The display module of claim 1, wherein, The display module has a first display state and a second display state, in the first display state, the first pixel units are turned on and at least part of the second pixel units are turned off, in the second display state, the first pixel units and the second pixel units are both turned on.

3. The display module of claim 2, wherein, In the first display state, part of the second pixel units are turned on, and the number of the turned-on second pixel units is less than that in the second display state.

4. The display module of claim 3, wherein, In the first display state, the light-emitting brightness of the first pixel units is lower than that in the second display state.

5. The display module of claim 3, wherein, The distance between the projection of the light-blocking layer on the light-emitting layer and the pixel units surrounded by the light-blocking layer ranges from 0 to 6 um.

6. The display module of claim 1, wherein, The optical modulation layer comprises a color filter layer and a black matrix layer disposed in the same layer, the color filter layer comprises a plurality of color filter structures arranged in an array, the color filter structures are disposed corresponding to the pixel units, the black matrix layer surrounds the color filter structures, and the projection of the black matrix layer on the light-blocking layer coincides with the light-blocking layer.

7. The display module of claim 1, wherein, The display module further comprises a microlens array layer disposed between the light-blocking layer and the light-emitting layer, and comprising a light-refracting layer and a plurality of microlens portions arranged in an array, the microlens portions are disposed corresponding to at least the pixel units surrounded by the light-blocking layer, the light-refracting layer covers the microlens portions on a side of the microlens portions away from the light-emitting layer, and the refractive index of the light-refracting layer is different from that of the microlens portions.

8. The display module of claim 1, wherein, The refractive index of the light-refracting layer is less than that of the microlens portions, and the projection of the microlens portions on the light-emitting layer covers at least the pixel units surrounded by the light-blocking layer.

9. The display module of claim 8, wherein, The projection of the microlens portions on the light-emitting layer is between the projection of the light-blocking layer on the light-emitting layer and the pixel units.

10. The display module of claim 9, wherein, The side of the microlens portions away from the light-emitting layer is convex.

11. The display module of claim 9, wherein, The microlens portions have a first surface away from the light-emitting layer, the first surface comprises a middle portion and a peripheral portion, the middle portion is substantially planar, and the peripheral portion surrounds the middle portion and is arc-shaped.

12. The display module of claim 11, wherein, The refractive index of the light-refracting layer is greater than that of the microlens portions, and the projection of the microlens portions on the light-emitting layer surrounds at least the pixel units surrounded by the light-blocking layer.

13. The display module of claim 8, wherein, The inner contour of the projection of the microlens portions on the light-emitting layer is between the projection of the light-blocking layer on the light-emitting layer and the pixel units.

14. The display module of claim 13, wherein, ​ 15. The display module of claim 8, wherein, The refractive index of one of the microlens portion and the light refraction layer is 1.6-1.8, and the refractive index of the other is 1.4-1.

56.

16. The display module of claim 8, wherein, The size of the microlens portion in the direction in which the light-emitting layer is vertically directed to the light-blocking layer is 2-4 um.

17. The display module of claim 8, wherein, The microlens array layer is located between the optical modulation layer and the light-emitting layer.

18. The display module of any one of claims 1-17, wherein, The light-blocking layer further comprises a light-transmitting bonding structure which is arranged in the same layer as the light-blocking layer and fills the hollowed-out part of the light-blocking layer.

19. The display module of claim 18, wherein, The display module further comprises a bonding layer which bonds the optical modulation layer and the light-blocking layer, and the light-transmitting bonding structure is connected to the bonding layer.

20. The display module of any one of claims 1-17, wherein, The display module comprises an encapsulation layer which is arranged on the light-emitting layer and is located on the light-emitting side of the light-emitting layer, and the encapsulation layer comprises two inorganic layers and an organic layer which is arranged between the two inorganic layers in a stacked manner, and the thickness of the organic layer is greater than or equal to 10 um.

21. A display screen comprising a cover plate and the display module according to any one of claims 1-20, wherein the cover plate is arranged on the side of the optical modulation layer away from the light-emitting layer.

22. An electronic device comprising a middle frame and the display screen according to claim 21, wherein the display screen is arranged on the middle frame.

23. A display control method for controlling the display state of a display module, wherein the display module comprises a light-emitting layer and a light-blocking layer, the light-emitting layer comprises a plurality of first pixel units arranged in an array, and a plurality of second pixel units arranged in an array together with the first pixel units, the orthographic projection of the light-blocking layer on the light-emitting layer is offset from the area corresponding to the second pixel units and surrounds the first pixel units, and the display control method comprises: controlling the switching of the first pixel units and the second pixel units so that the display module can be switched between a first display state and a second display state, wherein in the first display state, the first pixel units are turned on and at least part of the second pixel units are turned off, and in the second display state, the first pixel units and the second pixel units are both turned on.

24. The display control method according to claim 23, wherein In the first display state, part of the second pixel units are turned on, and the number of turned-on second pixel units is less than that in the second display state.

25. The display control method according to claim 23, wherein In the first display state, the light-emitting brightness of the first pixel units is less than that in the second display state.

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