Display module, display control method thereof, display screen and electronic equipment

Abstract

The invention relates to a display module, a display control method thereof, a display screen and electronic equipment. The display module comprises a light emitting layer which comprises a plurality of sub-pixels; 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 sub-pixels; 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 a partial region of the target sub-pixel; wherein the target sub-pixels are at least part of the sub-pixels in the plurality of sub-pixels; the driving circuit layer is arranged on the backlight side of the light emitting layer, a first anode and a second anode which are independent of each other are arranged on the driving circuit layer corresponding to each target sub-pixel, the first anode is used for driving a first pixel surrounded by the light shielding layer on the target sub-pixel, and the second anode is used for driving a second pixel not surrounded by the light shielding layer on the target sub-pixel; the peep-proof performance and the display picture quality of the display module can be considered.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display control method thereof, a display screen, and an electronic device. Background Art

[0002] With the development of electronic technology, display modules such as OLED (Organic Light-Emitting Diode) screens are used in electronic devices such as mobile phones and tablets. Some electronic devices have been designed to prevent peeping, with differentiated pixel viewing angles. In anti-peep mode, only pixels with small viewing angles are lit to prevent peeping. However, this anti-peep technology solution will cause the clarity of the display module to decrease. Summary of the invention

[0003] Based on this, it is necessary to provide a display module and its display control method, display screen, and electronic device that can solve the anti-peeping problem of electronic devices while taking into account display clarity.

[0004] In a first aspect, a display module is provided, comprising:

[0005] A light-emitting layer including a plurality of sub-pixels;

[0006] an optical modulation layer, disposed on the light-emitting side of the light-emitting layer and used to adjust the light emitted by the sub-pixel; and

[0007] A light shielding layer is provided 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 a partial area of ​​a target sub-pixel; wherein the target sub-pixel is at least a part of the sub-pixels among the plurality of sub-pixels;

[0008] The driving circuit layer is arranged on the backlight side of the light-emitting layer. The driving circuit layer is provided with a first anode and a second anode which are independent of each other corresponding to each target sub-pixel. The first anode is used to drive a first pixel on the target sub-pixel which is surrounded by the shading layer, and the second anode is used to drive a second pixel on the target sub-pixel which is not surrounded by the shading layer.

[0009] In a second aspect, a display screen is provided, comprising a cover plate and the above-mentioned display module, wherein the cover plate is arranged on a side of the optical modulation layer facing away from the light-emitting layer.

[0010] In a third aspect, an electronic device is provided, comprising a middle frame and the above-mentioned display screen, wherein the display screen is arranged on the middle frame.

[0011] In a fourth aspect, a display control method is provided, which is used to control the display state of a display module, wherein the display module includes a light-emitting layer, an optical modulation layer, a shading layer, and a driving circuit layer; the light-emitting layer includes a plurality of sub-pixels; the optical modulation layer is disposed on the light-emitting side of the light-emitting layer and is used to adjust the light emitted by the sub-pixels; the shading layer is disposed on the light-emitting side of the light-emitting layer, and the positive projection of the shading layer on the light-emitting layer surrounds a partial area of ​​a target sub-pixel; wherein the target sub-pixel is at least a portion of the sub-pixels among the plurality of sub-pixels; the driving circuit layer is disposed on the backlight side of the light-emitting layer, and a mutually independent first anode and a second anode are disposed on the driving circuit layer corresponding to each target sub-pixel, the first anode is used to drive a first pixel on the target sub-pixel surrounded by the shading layer, and the second anode is used to drive a second pixel on the target sub-pixel that is not surrounded by the shading layer; the method includes:

[0012] The switches of the first pixel and the second pixel of the target sub-pixel are controlled 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 is turned on, and in the second display state, at least the second pixel is turned on.

[0013] The above-mentioned display module divides the target sub-pixel into a first pixel and a second pixel through a light shielding layer, and forms a mutually independent first anode and a second anode on the driving circuit layer, and realizes independent driving control of the first pixel and the second pixel based on the independent anodes. By only driving the first pixel to light up, the light beam brightness attenuation is realized by using the light shielding layer, so that it is difficult to see the light emitted by the target sub-pixel in a large-angle field of view, thereby realizing the anti-peeping function. The display module provided by the embodiment of the present application supports the anti-peeping function without sacrificing the display resolution, and can take into account both the anti-peeping performance and clarity of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1a is a schematic cross-sectional view of a region where a second pixel is located in a display module in an embodiment;

[0016] Figure 1b is a schematic cross-sectional view of a region where a first pixel is located in a display module in an embodiment;

[0017] Figure 2 is a schematic diagram of the projection of a BM structure on a sub-pixel in a display module in an embodiment;

[0018] Figure 3 is a schematic diagram of sub-pixel light emission of a display module in a second sub-state in an embodiment;

[0019] Figure 4 is a schematic diagram of sub-pixel light emission of a display module in a first display state in an embodiment;

[0020] Figure 5 is a schematic diagram of sub-pixel light emission of a display module in a first sub-state in an embodiment;

[0021] Figure 6 is an equivalent schematic diagram of an array circuit in an embodiment;

[0022] Figure 7 is an equivalent schematic diagram of an array circuit in an embodiment;

[0023] Figure 8 1 is a simulation result diagram of the effect of BM on L-decay in one embodiment;

[0024] Fig. 9 Schematic diagram of the effect of BM segmentation of target sub-pixels in one embodiment;

[0025] Fig.10 Schematic diagram of the effect of BM expansion size on brightness attenuation at a large viewing angle in one embodiment;

[0026] Fig.11 is a schematic diagram of the structure of an electronic device in an embodiment;

[0027] Fig.12 is a schematic diagram of the internal structure of an electronic device in one embodiment;

[0028] Fig.13 FIG. 4 is a flow chart showing a control method in an embodiment.

[0029] Description of Figure Numbers:

[0030] 100, substrate; 110, PI layer; 120, buffer layer; 130, passivation layer; 200, light-emitting layer; 210, light-emitting device layer; 211, sub-pixel; 211R, red sub-pixel; 211G, green sub-pixel; 211B, blue sub-pixel; 2111, first pixel; 2112, second pixel; 212, pixel definition layer; 220, encapsulation layer; 300, optical modulation layer; 310, dimming unit; 311, high folding part; 312, low folding part; 400, light shielding layer; 500, driving circuit layer; 510, first anode; 520, second anode; 700, touch layer; 710, first sub-control layer; 720, second sub-control layer; 800, polarizer layer; 900, optical adhesive layer. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0032] As used herein, "electronic device" refers to a device that can receive and / or send communication signals, including but not limited to a device that is connected via any one or more of the following connection methods:

[0033] (1) Connection via wired lines, such as Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, and direct cable connection;

[0034] (2) Via wireless interfaces, such as cellular networks, wireless local area networks (WLAN), digital television networks such as DVB-H networks, satellite networks, and AM-FM broadcast transmitters.

[0035] An electronic device configured to communicate via a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

[0036] (1) Satellite phone or cellular phone;

[0037] (2) Personal Communications System (PCS) terminals that can combine cellular radio telephones with data processing, fax, and data communications capabilities;

[0038] (3) Radiotelephone, pager, Internet / Intranet access, Web browser, notepad, calendar, Personal Digital Assistant (PDA) equipped with a Global Positioning System (GPS) receiver;

[0039] (4) conventional laptop and / or handheld receivers;

[0040] (5) Conventional laptop and / or palmtop radiotelephone transceivers, etc.

[0041] Embodiments of the application are described herein with reference to cross-sectional views that are schematic representations of ideal embodiments (and intermediate structures) of the application, such that variations in the shapes shown due to, for example, manufacturing techniques and / or tolerances are anticipated. Thus, embodiments of the application should not be limited to the specific shapes of the regions shown herein, but rather include deviations in shapes due to, for example, manufacturing techniques. Thus, the regions shown in the figures are schematic in nature, their shapes do not represent the actual shapes of the regions of the device, and do not limit the scope of the application.

[0042] like Figure 1a-1b As shown, an embodiment of the present application provides a display module, including: a light-emitting layer 200 , an optical modulation layer 300 , a light-shielding layer 400 , and a driving circuit layer 500 .

[0043] Among them, the light-emitting layer 200 includes a plurality of sub-pixels 211. The light-emitting layer 200 may specifically include a light-emitting device layer 210 and an encapsulation layer 220 which are stacked in sequence. By arranging the light-shielding layer 400 on the upper layer of the encapsulation layer 220, it is possible to block light with a large viewing angle, and the manufacturing process is simple. Among them, the encapsulation layer 220 may be a thin film encapsulation (Thin Film Encapsulation, TFE) layer, and the thin film encapsulation is suitable for a display module including a flexible substrate. The encapsulation film may include an inorganic film and an organic film stacked alternately to prevent external pollutants from entering, thereby protecting the light-emitting material from being corroded by moisture and oxygen. The light-emitting device layer 210 in the light-emitting layer 200 is provided with a plurality of sub-pixels 211, and the plurality of sub-pixels 211 may be arranged in an array. The multiple sub-pixels 211 may include any one of a liquid crystal display device (LCD), a plasma display device (Plasma Display), an organic light emitting diode display device (OLED), an electrophoretic display device (EPD), or an electrochromic display device (ECD). The colors corresponding to the multiple sub-pixels 211 are not exactly the same. For example, the multiple sub-pixels 211 may include a plurality of red sub-pixels 211R, a plurality of green sub-pixels 211G, and a plurality of blue sub-pixels 211B, so as to display different colors by mixing the multiple color sub-pixels 211. It is understandable that in other embodiments, the multiple sub-pixels 211 are not limited to the above-mentioned red sub-pixels 211R, green sub-pixels 211G, and blue sub-pixels 211B, and may also include white sub-pixels, yellow sub-pixels, etc.

[0044] The optical modulation layer 300 is disposed on the light emitting side of the light emitting layer 200 and is used to adjust the light emitted by the sub-pixel 211 .

[0045] The light shielding layer 400 is disposed on the light-emitting side of the light-emitting layer 200. The orthographic projection of the light shielding layer 400 on the light-emitting layer 200 surrounds a partial area of ​​the target sub-pixel (eg Figure 1b As shown); wherein the target sub-pixel is at least part of the sub-pixels 211. The understanding that the light-shielding layer 400 is disposed on the light-emitting side of the light-emitting layer 200 can be understood as the light-shielding layer 400 being stacked between any two applicable layer structures on the side of the light-emitting layer 200 facing the optical modulation layer 300. The orthographic projection of the light-shielding layer 400 on the light-emitting layer 200 surrounding a partial area of ​​the target sub-pixel can be understood as referring to the orthographic projection of the part of the light-shielding layer 400 having a light-shielding effect on the light-emitting layer 200, surrounding a partial area of ​​the target sub-pixel. The light-shielding layer 400 may include a light-shielding matrix, and the orthographic projection of the light-shielding matrix on the light-emitting layer 200 surrounds a partial area of ​​the target sub-pixel, and the target sub-pixel is divided into a plurality of parts when viewed from the projection direction. The material of the light-shielding matrix includes, but is not limited to, any applicable material that can absorb or block light, such as ink, black resin, chromium, molybdenum, etc. It can be understood that since the light beam emitted by the sub-pixel 211 is divergent, the closer the light is to the edge of the light beam, the greater the divergence angle, and the shading matrix surrounds a partial area of ​​the target sub-pixel, the shading matrix can absorb part of the light at the edge of the light beam emitted by the first pixel 2111 surrounded by the shading matrix when driven by the first anode 510, thereby increasing the edge brightness attenuation of the light beam emitted by the target sub-pixel and reducing the edge brightness.

[0046] The driving circuit layer 500 is disposed on the backlight side of the light-emitting layer 200, and is used to drive each sub-pixel 211 to emit light. Specifically, the driving circuit layer 500 is provided with a mutually independent first anode 510 and a second anode 520 corresponding to each target sub-pixel, and the first anode 510 is used to drive the first pixel 2111 (such as Figure 1b As shown in FIG. 1 ), the second anode 520 is used to drive the second pixel 2112 (as shown in FIG. 1 ) on the target sub-pixel that is not surrounded by the light shielding layer 400. Figure 1a as shown).

[0047] The first pixel 2111 and the second pixel 2112 of a target sub-pixel are formed by the light shielding layer 400 acting on the same target sub-pixel.

[0048] The display module provided in the embodiment of the present application is as follows: Figure 2 and Figure 3As shown, the target sub-pixel is divided into a first pixel 2111 and a second pixel 2112 by a light shielding layer 400, and a first anode 510 and a second anode 520 are formed independently of each other on the driving circuit layer 500. Based on the independent anodes, the first pixel 2111 and the second pixel 2112 are independently driven and controlled. By only driving the first pixel 2111 to light up, the light shielding layer 400 is used to achieve the brightness attenuation of the light beam, making it difficult to see the light emitted by the target sub-pixel in a large-angle field of view, thereby achieving the anti-peeping function. The display module provided in the embodiment of the present application realizes the anti-peeping function without sacrificing the display resolution (PPI, Pixels Per Inch, pixels per inch), and can take into account both the anti-peeping performance and clarity of the display module.

[0049] When the display module is an OLED screen module, the OLED is co-evaporated. In the display module provided by the embodiment of the present application, the first pixel 2111 and the second pixel 2112 share a FMM (Fine Metal Mask) opening, and the aperture ratio is slightly sacrificed.

[0050] It should be noted that, in the display module provided in the embodiment of the present application, if the target sub-pixel does not cover all the sub-pixels 211, then the other sub-pixels 211 except the target sub-pixel among the multiple sub-pixels 211 are all turned on when the display module is working to ensure the display resolution.

[0051] To illustrate the implementation process of the display module provided in the embodiment of the present application, Figure 3 At this time, the target sub-pixels are the red sub-pixel 211R and the green sub-pixel 211G. In the scenario where anti-peeping protection is required, only the first pixel 211 in the red sub-pixel and the second pixel 211 in the green sub-pixel are driven to turn on through the first anode 510, and the non-target sub-pixels are turned on normally, that is, the blue sub-pixel here is turned on normally. Figure 4 As shown in FIG. 4 , it can be seen that the red sub-pixel and the green sub-pixel project light only within a small angle range, and the light projected at a large angle is blocked by the light shielding layer 400, and the brightness attenuation increases, thereby achieving an anti-peeping effect. Figure 4 It can also be seen that the number of pixels lit up at this time is not reduced compared to the number of sub-pixels, that is, the screen display resolution is not reduced, so the display quality can be guaranteed while achieving anti-peep protection.

[0052] Of course, it should be understood that this is only for illustrative purposes and does not restrict the selection of the target sub-pixel in the embodiments of the present application. Optionally, the target sub-pixel may also include a blue sub-pixel.

[0053] In one embodiment, if Figure 1a and Figure 1b As shown, the display template also includes: a substrate 100. The light-emitting layer 200 is located on the surface of the substrate 100. The substrate 100 may include, but is not limited to, hard substrates such as quartz glass and alumina glass, as well as flexible substrates such as polyimide film (PI) and polyester film (PET). In an exemplary embodiment, the substrate 100 of the display module may include a PI layer 110, a buffer layer 120 and a passivation layer (PLN, Planarization) 130 stacked in sequence. Among them, the buffer layer 120 (Buffer) is used to protect the PI layer 110 from physical and chemical damage, and buffer the stress of the flexible display module during bending and folding, avoiding fatigue or fracture of the substrate due to stress concentration. The passivation layer 130 is used to block water and oxygen, and has high hardness and wear resistance, which can protect the display module from scratches and collisions during normal use.

[0054] Optionally, the optical modulation layer 300 may be disposed on a surface of the light-emitting layer 200 that is away from the substrate 100 , and other film layers may be disposed between the light-emitting layer 200 , which is not limited here.

[0055] In one embodiment, the luminous areas of the plurality of sub-pixels 211 are not completely the same, and specifically, the luminous areas of the sub-pixels 211 of different colors are different. For example, the luminous material of the blue sub-pixel needs to work at high energy, which results in a faster decay rate of the luminous material of the blue sub-pixel, and accordingly, the life of the blue sub-pixel is lower. Therefore, the luminous area of ​​the blue sub-pixel can be increased, that is, the aperture ratio of the blue sub-pixel is increased, so that the required brightness can be achieved with a lower current density, and the decay rate of the blue sub-pixel can be slowed down. Similarly, the luminous area of ​​the green sub-pixel can be designed to be the smallest, and the luminous area of ​​the red sub-pixel can be set between the blue sub-pixel and the green sub-pixel. Further, the shape and luminous area of ​​each sub-pixel 211 can be defined by a pixel definition layer 212 (Pixel Definition Layer, PDL) to ensure that each sub-pixel can work correctly. Taking OLED as an example, the pixel definition layer 212 can be provided with a plurality of openings, each opening of the pixel definition layer 212 is filled with a luminous material, and the luminous materials of the sub-pixels 211 of different colors are separated by the pixel definition layer 212, thereby forming sub-pixels 211 of different colors. The opening shape of the pixel definition layer 212 can be, but is not limited to, any of a circle, an ellipse, a square, a rectangle, a polygon, a diamond, etc., which is not limited here. The opening shape of the BM (Black Matrix) and other structures on the light shielding layer 400 is consistent with the shape of the PDL212.

[0056] The pixel definition layer 212 can also be used to achieve isolation between the first anode 510 and the second anode 520. PDL212 can be used to separate two adjacent anodes. To prevent lateral crosstalk problems caused by OLED vapor deposition of the Common film layer, the taper angle of the PDL212 should be in the range of 18° to 35°, and specifically, can be greater than 28°.

[0057] The display module provided in the embodiment of the present application has a pixel arrangement scheme that divides the area surrounded by the light-shielding layer 400 into two parts, the inner and outer parts, and the part surrounded by the projection of the light-shielding layer 400 on the light-emitting layer 200 is used as the first pixel 2111 (anti-peeping pixel). Optionally, the shape surrounded by the projection of the light-shielding layer 400 on the light-emitting layer 200 can be designed as a circular opening, and the structure of the light-shielding layer 400 blocks the light projected by the first pixel 2111 at a large angle to achieve anti-peeping. The advantage of the circular opening is that the smaller the pixel size, the better the anti-peeping effect. Therefore, the part surrounded by the projection of the light-shielding layer 400 on the light-emitting layer 200 is used as the first pixel 2111, which can effectively improve the anti-peeping effect.

[0058] In one embodiment, the display module has a first display state and a second display state; in the first display state, the first pixel 2111 of the target sub-pixel is turned on (eg Figure 4 As shown, in the second display state, at least the second pixel 2112 of the target sub-pixel is turned on (as shown in Figure 3 and Figure 5 as shown).

[0059] In the scenario where anti-peeping protection is required, the display module is in the first display state. In the first display state, the first pixel 2111 is turned on, and the large-angle light emitted by the first pixel 2111 is blocked by the light shielding layer 400, resulting in increased brightness attenuation and reduced large-viewing angle contrast, thereby achieving an anti-peeping effect. In addition, at this time, the first pixel 2111 at the position of the target sub-pixel emits light without sacrificing display resolution. While achieving an anti-peeping effect, display clarity can be taken into account to ensure display quality.

[0060] In the scenario where anti-peep protection is not required, the display module is in the second display state. In the second display state, the second pixel 2112 is turned on, or the first pixel 2111 and the second pixel 2112 are both turned on. When only the second pixel 2112 is turned on, the driving signal loaded by the second anode 520 drives the second pixel 2112 to emit light. At this time, since the large-angle light emitted by the second pixel 2112 is not blocked by the light-shielding layer 400, the display brightness under a large viewing angle is guaranteed, and the display requirements in the scenario where anti-peep protection is not required are met. Moreover, when only the second pixel 2112 is turned on to emit light, the screen display resolution is not sacrificed, and the clarity is guaranteed. When both the first pixel 2111 and the second pixel 2112 are turned on, the driving signal loaded by the first anode 510 drives the first pixel 2111 to emit light, and the driving signal loaded by the second anode 520 drives the second pixel 2112 to emit light. At this time, the display brightness is better, and the screen resolution is improved compared to the traditional sub-pixel array arrangement, which can ensure that the display module can provide a clear and visible picture in a wide viewing angle range.

[0061] In addition, in the display module provided in the embodiment of the present application, the switching between the first display state and the second display state is simple to implement and does not require special SPR (Sub-Pixel Rendering) technology processing.

[0062] In one embodiment, the second display state includes a first sub-state and a second sub-state. In the first sub-state, the second pixel 2112 of the target sub-pixel is turned on (eg, Figure 5 As shown, in the second sub-state, the first pixel 2111 and the second pixel 2112 of the target sub-pixel are both turned on (as shown in FIG. Figure 3 as shown).

[0063] In a scenario where anti-peep protection is not required, the display module can be in the first sub-state and the second sub-state, that is, only the second pixel 2112 is turned on, or the first pixel 2111 and the second pixel 2112 are both turned on. Compared with the first sub-state, the display module in the second sub-state has a higher display resolution and higher brightness, and a better display effect under a wide viewing angle, which is more conducive to screen information sharing among multiple people. The display module provided in the embodiment of the present application supports the first display state, the first sub-state and the second sub-state, which can meet the display needs of users in different scenarios, and in the three display modes, the screen resolution is effectively guaranteed and the display quality is excellent.

[0064] In one embodiment, the driving circuit layer 500 is further formed with an array circuit (not shown), and the array circuit is respectively connected to the first anode 510 and the second anode 520 to control the on and off of the first pixel 2111 and the second pixel 2112 separately.

[0065] As Figure 6The equivalent circuit of the array circuit shown in the figure is used as an example for explanation. The equivalent circuit is an equivalent circuit corresponding to one of the target sub-pixels. Compared with the traditional circuit in which a single anode controls a single sub-pixel 211, the first anode 510 and the second anode 520 are controlled based on the EM signal and the EM-2 signal respectively, and a switch tube T7-2 for controlling the second anode 520 and a switch tube T5-2 for initializing the second anode 520 are added; a group of GIP (Gate In Panel, integrating the gate drive circuit on the display module substrate) drive (as shown in the figure EM-2) is added to control the second pixel 2112, and two switch tubes T7-2 and T5-2 are added, and the function of T5-2 is to initialize the reference voltage Vref of the newly added second anode 520, and the EM signal controls the lighting of the first pixel 2111.

[0066] In the first display state, EM is turned on, the first pixel 2111 is lit, EM-2 is turned off, and the second pixel 2112 is not lit. When switching to the second sub-state, EM is turned on, the first pixel 2111 is lit, and EM-2 is turned on and the second pixel 2112 is lit.

[0067] It should be emphasized that the EM and EM-2 of the equivalent circuit here refer to the control of a target sub-pixel of the same color. Figure 6 The equivalent circuit shown is used to drive the first anode 510 and the second anode 520.

[0068] To achieve the switching between the first display state and the two second display states, the array circuit can be further adjusted, and its equivalent circuit is as follows: Figure 7 Compared with the 7T1C pixel circuit in the traditional technology, three switch tubes T5-2, T6-2, and T7-2 are added, and a group of GIP drivers (such as Figure 7 The EM-2) shown in FIG. 1 independently controls the opening and closing of the first pixel 2111. The newly added switch tube T6-2 is controlled by the EM-2 signal, so that the second pixel 2112 can be lit independently. The function of the switch tube T5-2 is to initialize the reference voltage Vref for the second anode 520.

[0069] The influence of the BM structure of the light shielding layer corresponding to different sub-pixel sizes on the brightness attenuation at a large viewing angle is as follows Figure 8 As shown, in order to achieve a better anti-peeping effect, it is necessary to increase the brightness attenuation amplitude at a large viewing angle. The brightness attenuation amplitude at a large viewing angle can be increased by thickening the TFE (thin film encapsulation) thickness of the encapsulation layer 220. The thickness of the IJP (polymer acrylic material) in the TFE can range from 8 to 18 um. For example, the specific thickness can be a value greater than 10 um and less than 18 um.

[0070] In one of the embodiments, in the second sub-state, the viewing angle of the first pixel 2111 of the target sub-pixel is smaller than the viewing angle of the second pixel 2112 .

[0071] As Figure 3 Under the viewing angle shown, the black matrix and other shading structures of the shading layer 400 surround the first pixel 2111. The outside of the first pixel 2111 has no shading structure. The viewing angle when the first pixel 2111 is lit alone is smaller, and the viewing angle when the second pixel 2112 is lit alone is larger. Based on this feature, in the first display state, based on the small viewing angle feature of the first pixel 2111, the anti-peeping effect can be effectively guaranteed. In the second display state, the display effect at a large viewing angle can be guaranteed to meet the display needs of users in different scenarios.

[0072] In one embodiment, in the first sub-state, the number of the second pixel 2112 of the target sub-pixel is at least one.

[0073] The projection of the light shielding layer 400 on the light emitting layer can divide a target sub-pixel into at least one second pixel 2112. For example, a single target sub-pixel can be divided to form a plurality of second pixels 2112. Figure 2 , Figure 3 and Fig. 9 As shown, there is a first pixel 2111 and a second pixel 2112. Of course, the projection of the light shielding layer 400 on the light emitting layer 200 can also divide a target sub-pixel into two or more second pixels 2112 to improve the PPI.

[0074] In one embodiment, the number of the second pixel 2112 of the target sub-pixel is one, and the aperture ratio of the second pixel 2112 is the same as the aperture ratio of the first pixel 2111 .

[0075] When there are multiple second pixels 2112, as the number of blocks into which the target sub-pixel is divided increases due to the projection of the light-shielding layer 400 on the light-emitting layer 200, the negative impact of the light-shielding layer 400 on the light-emitting area of ​​the target sub-pixel will also increase, and the pixel aperture ratio of the target sub-pixel will be further sacrificed, affecting the service life of the screen. Therefore, in one embodiment, the target sub-pixel is divided into two parts, one part as the first pixel 2111 and the other part as the second pixel 2112, so as to take into account both PPI and aperture ratio. Optionally, the target sub-pixel is divided in half, and the aperture ratios of the divided first pixel 2111 and the second pixel 2112 are the same. In the first display state, the loaded driving current can be evenly distributed and loaded to the first anode 510 and the second anode 520.

[0076] The display module provided in the embodiment of the present application has a pixel arrangement scheme that is conducive to improving PPI. In the first display state, Figure 4As shown, the red sub-pixel 211R and the green sub-pixel 211G are used as target sub-pixels, and the target sub-pixels are divided into a first pixel 2111 and a second pixel 2112. The pixel PPI can be increased from 400PPI before division to 600PPI. If the red sub-pixel 211R, the green sub-pixel 211G and the blue sub-pixel 211B are divided at the same time, the screen PPI can be increased by two times, from 400PPI before BM division to 800PPI level, and the picture quality display is more delicate.

[0077] In one embodiment, if Fig. 9 As shown, the distance D1 between the first anode 510 and the second anode 520 corresponding to the target sub-pixel is in the range of 2-10um. For example, it is greater than 3um and less than 10um. By setting the first anode 510 and the second anode 520 at intervals, the lateral crosstalk problem of the common film layer can be prevented, and the driving display effect and product reliability of the display module can be improved. Optionally, to further avoid the lateral crosstalk problem, the gap D2 between the PDL212 of the target sub-pixel should be in the range of 4~20um, for example, it can be 6um.

[0078] In a test case, Figure 4 As shown, the red sub-pixel 211R and the green sub-pixel 211G are used as target sub-pixels, and the spacing between two adjacent first anodes 510 and second anodes 520 is greater than 3um, and the spacing between PDL212 is designed to be 6um. Compared with the traditional solution before the BM of the light shielding layer 400 divides the target sub-pixels, the aperture ratio is estimated to decrease by 4.5%, the lifespan decreases slightly, and the PPI is increased by 1.5 times.

[0079] In one embodiment, the distance between the orthographic projection of the light shielding layer 400 on the light emitting layer 200 and the target sub-pixel surrounded by the light shielding layer 400 is in the range of 0-6 um.

[0080] like Fig.10 As shown in the figure, the influence of the BM expansion size of the shading layer 400 on the brightness attenuation at a large viewing angle can be achieved. Therefore, the contrast or brightness at different viewing angles can be changed by adjusting the spacing between BM410 and PDL212, thereby achieving different anti-peeping effects. When the display module is applied to electronic devices such as mobile phones, tablets, and TVs, the spacing between BM and PDL can be designed to be 0~6um. The smaller the spacing, the better the shading effect at a large viewing angle and the better the anti-peeping effect.

[0081] In one embodiment, the plurality of sub-pixels 211 include a red sub-pixel 211R, a green sub-pixel 211G, and a blue sub-pixel 211B, and the target sub-pixel includes at least one of the red sub-pixel 211R and the green sub-pixel 211G. A corresponding BM structure 410 is provided for at least one of the red sub-pixel 211R and the green sub-pixel 211G to achieve an anti-peeping design.

[0082] In one embodiment, the optical modulation layer 300 is provided with a plurality of dimming units 310. Figure 1b The dotted box in the middle shows a dimming unit 310 , and a plurality of dimming units 310 are respectively disposed corresponding to a plurality of sub-pixels 211 .

[0083] In one embodiment, for a sub-pixel 211 with a smaller light-emitting area, a dimming unit 310 with a larger size difference from the sub-pixel 211 may be used to improve the degree of improvement of the light-emitting efficiency of the light beam within a small viewing angle range by the dimming unit 310, thereby increasing the light output of the light beam within a small viewing angle range under the joint action of the sub-pixel 211 and the dimming unit 310, for example, increasing the light output of the green sub-pixel 211G. Correspondingly, for a sub-pixel 211 with a larger light-emitting area, due to its own larger light output, a dimming unit 310 with a smaller size difference from the sub-pixel 211 may be used to reduce the degree of improvement of the light-emitting efficiency of the light beam within a small viewing angle range by the dimming unit 310, thereby reducing the light output of the light beam within a small viewing angle range under the joint action of the sub-pixel 211 and the dimming unit 310, for example, reducing the light output of the red sub-pixel 211R. Therefore, by adjusting the size of the dimming unit 310, the light output of different colors in the display module at a small viewing angle can be made more balanced, thereby reducing the color deviation of the small viewing angle during the display process.

[0084] In one embodiment, Figure 1b As shown, the optical modulation layer 300 may include a micro lens array (Micro Lens Array, MLA), and the shape of the micro lens may be any one of an ellipsoid, a hemisphere, a wedge, a prism, etc., which is not limited in this embodiment, and a dimming unit 310 may include one or more micro lenses in the micro lens array. The dimming unit 310 is used to adjust the light beam emitted by the corresponding sub-pixel 211.

[0085] As shown in the following table, in one embodiment, the optical simulation results of the large-angle brightness after adding the MLA and BM shielding structure 410 are shown. When the opening size of the sub-pixel 211 is 10um, the brightness at a 35° viewing angle is reduced from 24% to 19%, which can effectively improve the anti-peeping effect. By adding the high folding portion 311 and the low folding portion 312, when the opening size of the PDL212 is 15um, the light output efficiency can be increased by up to 15%, when the opening size of the PDL212 is 10um, the light output efficiency is increased by 36%, and when the opening size of the PDL212 is 5um, the light output efficiency is increased by 40%. The smaller the opening size of the PDL212, the greater the improvement in light output efficiency, and the faster the brightness decays, the better the anti-peeping effect.

[0086]

[0087] As can be seen from the above table, by adopting the MLA structure superimposed on the BM structure 410, the comprehensive anti-peeping effect is better than the solution of simply adding the BM structure 410, and the efficiency of the MLA structure is estimated to increase by 15~40%, and the comprehensive improvement is estimated to be 10%.

[0088] In one embodiment, based on the MLA structure, such as Figure 1b As shown, the dimming unit 310 is formed with a high-bending portion 311 and a low-bending portion 312, and the refractive index of the high-bending portion 311 is higher than the refractive index of the low-bending portion 312. The MLA structure can be prepared by exposure using a grayscale mask.

[0089] Specifically, the high-refractive portion 311 can be made by adding high-refractive index particles to main components such as photoresist (Optical Contact Adhesive, OC) to have a higher refractive index. The high-refractive index particles may include, but are not limited to, zirconium oxide (ZrO2) or neodymium (Nd). The low-refractive portion 312 can be made of low-refractive index materials such as silicon (Si) and photoresist. The light beam emitted by the sub-pixel 211 is incident on the low-refractive portion 312 through the high-refractive portion 311 of the corresponding dimming unit 310. By providing a low-refractive portion 312 and a high-refractive portion 311 with different refractive indices, the light beam emitted by the sub-pixel 211 can be bent at the interface between the high-refractive portion 311 and the low-refractive portion 312 (such as Figure 1b The light path is changed to convert the light beam with a large viewing angle to a small viewing angle or even a positive viewing angle to the greatest extent possible, so that the light output efficiency of the display module within a small viewing angle range can be effectively improved.

[0090] For example, in one embodiment, the refractive index of the high-bending portion 311 is in the range of 1.6 to 1.8, and the refractive index of the low-bending portion 312 can be in the range of 1.4 to 1.56. The difference in refractive index can be used to shape the beam, and the light from the side view angle can be gathered to the middle front view angle, thereby improving the light extraction efficiency. At the same time, the pixel light from a large angle is gathered to reduce the component blocked by the BM, which can comprehensively reduce the power consumption of the screen by about 15%.

[0091] Moreover, based on the method of adding high-refractive index particles, the refractive index of the high-refractive portion can be flexibly changed by adjusting the material and addition amount of the high-refractive index particles, which is highly feasible.

[0092] In one embodiment, if Figure 1b As shown, the high-folding portion 311 is located in the central area of ​​the dimming unit 310, and extends from the surface of the dimming unit 310 close to the light-emitting layer 200 to the surface of the dimming unit 310 away from the light-emitting layer 200. Moreover, the high-folding portion 311 covers a portion of the surface of the dimming unit 310 close to the light-emitting layer 200, and exposes another portion of the surface of the dimming unit 310 close to the light-emitting layer 200. The low-folding portion 312 is located in the peripheral area of ​​the dimming unit 310 and contacts the high-folding portion 311. Optionally, the top surface of the low-folding portion 312 can extend to the surface of the dimming unit 310 away from the light-emitting layer 200, or can be located between the two surfaces of the dimming unit 310, which is not limited in this embodiment. Among them, the top surface of the low-folding portion 312 refers to the surface of the low-folding portion 312 away from the light-emitting layer 200.

[0093] Optionally, the high folding portion 311 is patterned (for example, the middle of the patterned layer of the high folding portion 311 is relatively flat and curved at the edge), and the low folding portion 312 is flat on the entire surface. Under this structural design, the light extraction efficiency is higher, the power consumption benefit is greater, and the anti-peeping effect is better. Figure 1b In the illustrated embodiment, the interface of the high folding portion 311 is arc-shaped, and the interface of the low folding portion 312 is flat. Further, the low folding portions 312 corresponding to two adjacent sub-pixels 211 can be connected as one body to improve the structural stability of the low folding portion 312. Figure 1b In the embodiment shown, the cross-section of the integrated structure formed by connecting the low-folding portions 312 corresponding to two adjacent sub-pixels 211 can be a trapezoid, and the two side surfaces of the trapezoid are interfaces between the low-folding portion 312 and the high-folding portion 311, so that the light beam from the sub-pixel 211 is refracted or reflected at the above interface, thereby adjusting the light path. It should be noted that the light-emitting device such as OLED as the sub-pixel 211 is usually a uniform surface-emitting light source.

[0094] In one embodiment, the size of a single sub-pixel 211 is in the range of 4um to 15um.

[0095] In one embodiment, if Figure 1b As shown, the display module also includes a touch layer 700. The touch layer 700 is located on the side of the light-emitting layer 200 close to the optical modulation layer 300. Specifically, the touch layer 700 includes a first sub-touch layer 710 and a second sub-touch layer 720 which are stacked, and the second sub-touch layer 720 is located between the first sub-touch layer 710 and the light shielding layer 400. Among them, the first sub-touch layer 710 includes a plurality of first touch electrodes arranged at intervals, and the projection of the first touch electrode on the substrate 100 and the projection of the sub-pixel 211 on the substrate 100 are staggered to avoid the first touch electrode blocking the sub-pixel 211 and affecting the display. The second sub-touch layer 720 includes a plurality of second touch electrodes arranged at intervals, and the plurality of second touch electrodes correspond to the plurality of first touch electrodes one by one, so that one first touch electrode and a corresponding second touch electrode constitute a touch unit.

[0096] In one embodiment, if Figure 1b As shown, the display module also includes a filter layer. The filter layer includes a plurality of filter parts and a plurality of shading parts (not shown), and the filter parts and the shading parts are alternately arranged. It can be understood that the metal electrode of the display module will reflect the natural light from the outside, causing image interference and reduced contrast. Therefore, a shading part can be used to reduce the influence of reflected light on the display image. The shading part can also be called a black matrix (Black Matrix, BM). The shading part is used to block and absorb reflected light and outgoing light with a wide viewing angle, especially light beams above 70° are easily absorbed by the shading part, thereby reducing the influence of reflected light on the image and reducing the wide viewing angle light output of the display module.

[0097] The plurality of filters are respectively disposed corresponding to the plurality of sub-pixels 211 , and the center of the projection of the filter on the substrate 100 is aligned with the center of the projection of the corresponding sub-pixel 211 on the substrate 100 .

[0098] In one embodiment, the light emitting area of ​​the sub-pixel 211 is positively correlated with the size of the corresponding filter. It is understandable that the larger the size of the light shielding part, the better the shielding effect of the reflected ambient light, and the more conducive to improving the reflection phenomenon. Similar to the effect of the size of the dimming unit 310 on the small viewing angle light output of the display module, if the light shielding part of the same size is used for sub-pixels with different light emitting areas, the large viewing angle color deviation problem of the display module will also be caused due to the different brightness attenuation at a large viewing angle. Therefore, for sub-pixels 211 with different light emitting areas, the size of the corresponding light shielding part can also be designed differently, so that the light output of sub-pixels 211 with different light emitting areas matches each other at a large viewing angle, thereby reducing the large viewing angle color deviation of the display module. It is understandable that the large viewing angle color deviation of the display module can also be related to other factors other than the light emitting area of ​​the sub-pixel 211, such as the light emission wavelength of the sub-pixel 211. Therefore, the size of the filter part can be determined by multiple factors, not just the light emitting area of ​​the sub-pixel 211. Before determining the size of the filter portion, the large viewing angle color deviation of the display module with the same size of each shading portion may be detected first, and the size of each shading portion may be comprehensively determined according to the detection result.

[0099] For example, under normal circumstances, since the blue sub-pixel has the largest light-emitting area, the display module is prone to a color shift problem of blue at a large viewing angle. Therefore, the size of the filter portion corresponding to the blue sub-pixel can be reduced, and the size of the corresponding shading portion can be increased, so as to block the blue sub-pixel's large viewing angle light output, or the size of the filter portion corresponding to the red sub-pixel and the green sub-pixel can be increased, and the size of the corresponding shading portion can be reduced, so as to expand the red sub-pixel and the green sub-pixel's large viewing angle light output. In some embodiments, under the influence of multiple factors, the display module will have a color shift problem of green at a large viewing angle, then the size of the filter portion corresponding to the green sub-pixel can be increased, so as to block the green sub-pixel's large viewing angle light output, or the size of the filter portion corresponding to the red sub-pixel and the blue sub-pixel can be reduced, so as to expand the red sub-pixel and the blue sub-pixel's large viewing angle light output. In the embodiment of the application, by synchronously adjusting the size of the dimming unit and the size of the shading portion, the light output of different colors in each viewing angle range can be comprehensively balanced to reduce the color shift of the display module at a small viewing angle to red and a large viewing angle to blue-green, thereby improving the display quality of the display module.

[0100] In one embodiment, the filter layer is located between the light emitting layer 200 and the optical modulation layer 300. This can avoid the reflectivity increase problem caused by the MLA on the upper layer, improve the screen-off effect, and achieve a lower power consumption effect without affecting the reflectivity.

[0101] The display module provided by the implementation of this application will not cause a decrease in PPI in the first display state (anti-peeping state), that is, it will not affect the screen display clarity and screen transmittance. In addition, switching between multiple display states can be achieved without the support of special algorithms. The independent control of the first anode and the second anode requires a relatively simple array circuit design of the driving circuit layer and is easy to implement. In addition, due to the independent anode control, the pixel PPI is greatly increased.

[0102] The display module provided in the embodiment of the present application can achieve an anti-peeping effect by only using BM shielding, and the manufacturing process is simple.

[0103] The display module provided in the embodiment of the present application has a faster brightness decay at a large viewing angle due to the design of BM surrounding the first pixel. For example, in a test example, at an angle of 30°, the brightness of the first pixel decays to only 6%, and at 35°, the brightness decay of the first pixel reaches more than 80%, thereby achieving a good anti-peeping effect.

[0104] In one embodiment, the display module further includes a polarizer layer 800 .

[0105] In one embodiment, the display module further includes a photoresist layer 900 located between the light shielding layer 400 and the polarizer layer 800 .

[0106] In one embodiment, a display screen includes a cover plate and the above-mentioned display module, wherein the cover plate is disposed on a side of the optical modulation layer 300 facing away from the light-emitting layer 200 .

[0107] The electronic device provided in the embodiment of the present application is equipped with the above-mentioned display module. The cover plate (not shown) and the display module together form a display screen. The cover plate includes but is not limited to a glass or plastic cover plate. The cover plate can serve as the outermost structural member of the display screen and adhere to the display module to provide protection for the display module. The electronic device includes but is not limited to any applicable electronic product such as a smartphone, a tablet computer, an e-reader, etc. The present application takes a smartphone as an example of an electronic device. The electronic device may include a middle frame and a back plate, and the display module and the back plate are respectively arranged on opposite sides of the middle frame. Depending on the layout design of the electronic device, the size and structure of the display module may also be different. For example, the electronic device includes but is not limited to any applicable smartphone such as a water drop screen, a bangs screen, a hole screen, etc.

[0108] In one embodiment, an electronic device 1, such as Fig.12 As shown, it includes a middle frame 200 and the display screen 100, and the display screen 100 is arranged on the middle frame 200. In this embodiment, based on the display module in the above embodiment, an electronic device that takes into account both anti-peeping effect and display clarity is provided.

[0109] Specifically, the electronic device may be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, IoT devices and portable wearable devices. IoT devices may be smart speakers, smart TVs, smart air conditioners, smart car devices, etc. Portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. Fig.13 The figure is an internal structure diagram of an electronic device of an embodiment. The electronic device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the electronic device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The input device of the electronic device can be a touch layer covered on the display screen, or a button, a trackball or a touchpad provided on the housing of the electronic device, or an external keyboard, touchpad or mouse, etc.

[0110] To prevent the first display state from being used for a long time, where only some pixels are turned on in the lighting mode, there will be a significant difference in lifespan between non-lit pixels and lit pixels, causing screen burn-in. The electronic device provided in the present application may be equipped with a driver IC that may be equipped with a Deburn in algorithm to improve the burn-in problem.

[0111] Those skilled in the art will understand that Fig.13 The structure shown in the figure is only a block diagram of a part of the structure related to the present application scheme, and does not constitute a limitation on the electronic device to which the present application scheme is applied. The specific electronic device may include Fig.13 More or fewer components may be shown, or certain components may be combined, or may have a different arrangement of components.

[0112] In one embodiment, a display control method is provided for controlling the display state of a display module, wherein the display module comprises a light-emitting layer, an optical modulation layer, a shading layer, and a driving circuit layer; the light-emitting layer comprises a plurality of sub-pixels; the optical modulation layer is disposed on the light-emitting side of the light-emitting layer and is used to adjust the light emitted by the sub-pixels; the shading layer is disposed on the light-emitting side of the light-emitting layer, and the positive projection of the shading layer on the light-emitting layer surrounds a partial area of ​​a target sub-pixel; wherein the target sub-pixel is at least a portion of the sub-pixels among the plurality of sub-pixels; the driving circuit layer is disposed on the backlight side of the light-emitting layer, and a mutually independent first anode and a second anode are disposed on the driving circuit layer corresponding to each target sub-pixel, the first anode is used to drive a first pixel on the target sub-pixel surrounded by the shading layer, and the second anode is used to drive a second pixel on the target sub-pixel that is not surrounded by the shading layer; the method comprises:

[0113] S200: Control the switches of a first pixel and a second pixel of a target sub-pixel 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 is turned on, and in the second display state, at least the second pixel is turned on.

[0114] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0115] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0116] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the present application. It should be noted that, for a person of ordinary skill in the art, several modifications and improvements may be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A display module, characterized in that: include: A light-emitting layer including a plurality of sub-pixels; An optical modulation layer, disposed on the light-emitting side of the light-emitting layer and used to adjust the light emitted by the sub-pixel; as well as, A light shielding layer is provided 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 a partial area of ​​a target sub-pixel; wherein the target sub-pixel is at least a part of the plurality of sub-pixels; A driving circuit layer is arranged on the backlight side of the light-emitting layer, and a mutually independent first anode and a second anode are arranged on the driving circuit layer corresponding to each of the target sub-pixels, the first anode is used to drive a first pixel on the target sub-pixel surrounded by the shading layer, and the second anode is used to drive a second pixel on the target sub-pixel that is not surrounded by the shading layer.

2. The display module according to claim 1, characterized in that: The display module has a first display state and a second display state; in the first display state, a first pixel of the target sub-pixel is turned on, and in the second display state, at least a second pixel of the target sub-pixel is turned on.

3. The display module according to claim 2, characterized in that: The second display state includes a first sub-state and a second sub-state. In the first sub-state, the second pixel of the target sub-pixel is turned on. In the second sub-state, both the first pixel and the second pixel of the target sub-pixel are turned on.

4. The display module according to claim 3, characterized in that: In the second sub-state, a viewing angle of a first pixel of the target sub-pixel is smaller than a viewing angle of a second pixel.

5. The display module according to claim 3, characterized in that: In the first sub-state, the number of second pixels of the target sub-pixel is at least one.

6. The display module according to claim 5, characterized in that: The number of the second pixel of the target sub-pixel is one, and the aperture ratio of the second pixel is the same as the aperture ratio of the first pixel.

7. The display module according to claim 1, characterized in that: The distance between the first anode and the second anode corresponding to the target sub-pixel is in the range of 2-10 um.

8. The display module according to claim 1, characterized in that: The distance between the orthographic projection of the light-shielding layer on the light-emitting layer and the target sub-pixel surrounded by the light-shielding layer is in the range of 0-6 um.

9. The display module according to claim 1, characterized in that: The plurality of sub-pixels include a red sub-pixel, a green sub-pixel, and a blue sub-pixel, and the target sub-pixel includes at least one of the red sub-pixel and the green sub-pixel.

10. A display screen, characterized in that: It comprises a cover plate and the display module as claimed in any one of claims 1 to 9, wherein the cover plate is arranged on a side of the optical modulation layer facing away from the light-emitting layer.

11. An electronic device, characterized in that: It comprises a middle frame and the display screen as claimed in claim 10, wherein the display screen is arranged on the middle frame.

12. A display control method, characterized in that: Used to control the display state of a display module, the display module includes a light-emitting layer, an optical modulation layer, a light-shielding layer, and a driving circuit layer; the light-emitting layer includes a plurality of sub-pixels; 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 sub-pixels; 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 a partial area of ​​a target sub-pixel; wherein the target sub-pixel is at least a part of the plurality of sub-pixels; the driving circuit layer is arranged on the backlight side of the light-emitting layer, and the driving circuit layer is provided with a mutually independent first anode and a second anode corresponding to each of the target sub-pixels, the first anode is used to drive a first pixel on the target sub-pixel surrounded by the light shielding layer, and the second anode is used to drive a second pixel on the target sub-pixel that is not surrounded by the light shielding layer; The method comprises: Control the switches of the first pixel and the second pixel of the target sub-pixel 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 is turned on, and in the second display state, at least the second pixel is turned on.

Images