Display substrate, display device and display method

Abstract

The embodiment of the invention provides a display substrate, display equipment and a display method. A pixel unit comprises a conventional sub-pixel and a peep-proof sub-pixel; the light-emitting layer comprises a light-emitting structure of a conventional sub-pixel and a light-emitting structure of a peep-proof sub-pixel, the peep-proof layer comprises a plurality of peep-proof units, each peep-proof unit corresponds to the light-emitting structure of the peep-proof sub-pixel, and for each peep-proof unit, the peep-proof unit is used for limiting the view field of light emitted by the light-emitting structure of the peep-proof sub-pixel at a preset angle; in the non-peep-proof display mode, the conventional sub-pixels and the peep-proof sub-pixels are lightened or only the conventional sub-pixels are lightened, and in the peep-proof display mode, the peep-proof sub-pixels are lightened, so that only the peep-proof sub-pixels emit light in the peep-proof mode, and due to the existence of the peep-proof layer, the light emitted by the peep-proof sub-pixels can only be observed at a certain angle; the angle of the field of view is limited, and the peep-proof efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and in particular, to a display substrate, a display device, and a display method. Background Art

[0002] Currently, OLED (Organic Light-Emitting Diode) displays are widely used in consumer electronic products such as mobile phones and wearable devices. Consumers have different requirements for whether the electronic products are anti-peeping in different scenarios. That is to say, in some scenarios, consumers hope that the electronic products can achieve the anti-peeping function, and in some scenarios, consumers hope that the electronic products do not achieve the anti-peeping function.

[0003] For example, when using a mobile phone to talk about private topics with friends on public transportation, using a mobile phone to handle work content involving company secrets in public, and entering a payment password when paying for goods in a supermarket, to ensure transaction security, consumers hope that the product can achieve the anti-peeping function and improve display security; when using a mobile phone to share movies or watch ball games with friends, consumers hope to turn off the anti-peeping function and let people beside them see the content displayed on the screen clearly; at this time, intelligent anti-peeping is required to achieve one-key switching. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a display substrate, a display device, and a display method. The specific technical solutions are as follows:

[0005] In a first aspect, the embodiments of the present application provide a display substrate, including:

[0006] A light-emitting layer and an anti-peeping layer; the light-emitting layer is disposed between the substrate of the display substrate and the anti-peeping layer;

[0007] The display substrate includes a plurality of pixel units, and each pixel unit includes a normal sub-pixel and an anti-peeping sub-pixel; the light-emitting layer includes a light-emitting structure of the normal sub-pixel and a light-emitting structure of the anti-peeping sub-pixel, and the light-emitting structure of the normal sub-pixel of each pixel unit is disposed around the light-emitting structure of the anti-peeping sub-pixel of the pixel unit;

[0008] The anti-peeping layer includes a plurality of anti-peeping units, and each anti-peeping unit corresponds to a light-emitting structure of an anti-peeping sub-pixel.

[0009] In a possible implementation manner, for each anti-peeping unit, the orthographic projection of the anti-peeping unit on the substrate covers the orthographic projection of the light-emitting structure of the anti-peeping sub-pixel corresponding to the anti-peeping unit on the substrate; the display substrate further includes a packaging layer, and the packaging layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in a direction away from the light-emitting layer;

[0010] The anti-peeping unit is located between the organic layer and the first inorganic layer, and the refractive index of the anti-peeping unit is greater than that of the organic layer.

[0011] In a possible implementation manner, the display substrate further includes:

[0012] An anode layer; the anode layer is disposed between the light-emitting layer and the substrate;

[0013] The anode layer includes a plurality of anode electrodes, and each anode electrode is connected to a sub-pixel; the sub-pixel is the conventional sub-pixel or the anti-peeping sub-pixel;

[0014] The anode electrodes connected to the conventional sub-pixels and the anode electrodes connected to the anti-peeping sub-pixels in the same pixel unit are arranged at intervals.

[0015] In a possible implementation manner, the display substrate further includes a pixel definition structure;

[0016] The pixel definition structure isolates the light-emitting structures of the conventional sub-pixels and the anti-peeping sub-pixels in the same pixel unit.

[0017] In a possible implementation manner, the anti-peeping unit includes a gray color film, and the transmittance spectral curve of the gray color film has transmittance peaks in the red, blue, and green bands.

[0018] In a second aspect, an embodiment of the present application provides a display substrate, including:

[0019] A light-emitting layer and an anti-peeping layer; the light-emitting layer is disposed between the substrate of the display substrate and the anti-peeping layer;

[0020] The display substrate includes a plurality of pixel units, and each pixel unit includes a conventional sub-pixel and an anti-peeping sub-pixel; the light-emitting layer includes a light-emitting structure of the conventional sub-pixel and a light-emitting structure of the anti-peeping sub-pixel, and the light-emitting structure of the conventional sub-pixel and the light-emitting structure of the anti-peeping sub-pixel of each pixel unit are adjacent to each other in a plane perpendicular to the light-emitting direction of the display substrate;

[0021] The anti-peeping layer includes a plurality of anti-peeping units, and each anti-peeping unit corresponds to a light-emitting structure of an anti-peeping sub-pixel.

[0022] In a possible implementation manner, for each anti-peeping unit, the orthographic projection of the anti-peeping unit on the substrate covers the orthographic projection of the light-emitting structure of the anti-peeping sub-pixel corresponding to the anti-peeping unit on the substrate, and the display substrate further includes a packaging layer, and the packaging layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in a direction away from the light-emitting layer;

[0023] The anti-peeking unit is located between the organic layer and the first inorganic layer, and the refractive index of the anti-peeking unit is greater than that of the organic layer.

[0024] In a possible implementation manner, the display substrate further includes:

[0025] An anode layer; the anode layer is disposed between the light-emitting layer and the substrate;

[0026] The anode layer includes a plurality of anode electrodes, and each anode electrode is connected to a sub-pixel; the sub-pixel is the conventional sub-pixel or the anti-peeking sub-pixel;

[0027] The anode electrodes connected to the conventional sub-pixels and the anode electrodes connected to the anti-peeking sub-pixels in the same pixel unit are arranged at intervals.

[0028] In a possible implementation manner, the display substrate further includes a pixel definition structure;

[0029] The pixel definition structure isolates the light-emitting structures of the conventional sub-pixels and the anti-peeking sub-pixels in the same pixel unit.

[0030] In a possible implementation manner, the anti-peeking unit includes a gray color filter, and the transmittance spectral curve of the gray color filter has transmittance peaks in the red, blue, and green bands.

[0031] An embodiment of the present application further provides a display device, including the display substrate according to any one of the above first aspect or the above second aspect.

[0032] An embodiment of the present application further provides a display method for a display device, which is applied to the display device described in the above embodiment, and includes:

[0033] Detecting whether the display device satisfies a preset anti-peeking condition in the display state, and in the case of satisfaction, controlling the conventional sub-pixels of the display substrate not to be lit, and the anti-peeking sub-pixels to be lit, and in the case of non-satisfaction, controlling both the conventional sub-pixels and the anti-peeking sub-pixels to be lit or only the conventional sub-pixels to be lit.

[0034] In a possible implementation manner, the detecting whether the display device satisfies a preset anti-peeking condition in the display state includes:

[0035] Obtaining the content to be displayed by the display device, and in the case where the content to be displayed is private content, determining that the display device satisfies the preset anti-peeking condition in the display state.

[0036] In a possible implementation manner, the detecting whether the display device satisfies a preset anti-peeking condition in the display state includes:

[0037] Detect the image information of the viewing angle protection field of the display device, and when the viewing angle protection field includes the human eye, determine that the display device meets the preset anti-peeping condition in the display state.

[0038] Advantages of the embodiments of the present application:

[0039] The display substrate, display device and a display method provided by the embodiments of the present application, the pixel unit includes a normal sub-pixel and a viewing angle protection sub-pixel; the light-emitting layer includes the light-emitting structure of the normal sub-pixel and the light-emitting structure of the viewing angle protection sub-pixel, the viewing angle protection layer includes a plurality of viewing angle protection units, and each viewing angle protection unit corresponds to the light-emitting structure of a viewing angle protection sub-pixel. For each viewing angle protection unit, the viewing angle protection unit is used to limit the viewing field of the light emitted by the light-emitting structure of the viewing angle protection sub-pixel to a preset angle. In the non-viewing angle protection display mode, the normal sub-pixels and the viewing angle protection sub-pixels are lit or only the normal sub-pixels are lit, and in the viewing angle protection display mode, the viewing angle protection sub-pixels are lit. Thus, in the viewing angle protection mode, only the viewing angle protection sub-pixels emit light. Due to the existence of the viewing angle protection layer, the light emitted by the viewing angle protection sub-pixels can only be observed at a certain angle, limiting the viewing field angle and improving the viewing angle protection efficiency.

[0040] Of course, it is not necessary for any product or method implementing the present application to achieve all the above advantages simultaneously. Description of the Drawings

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application, and those of ordinary skill in the art can also obtain other embodiments based on these drawings.

[0042] Figure 1 It is the first structural schematic diagram of the display substrate provided by the embodiment of the present application;

[0043] Figure 2 It is the first structural schematic diagram of the pixel unit of the display substrate provided by the embodiment of the present application;

[0044] Figure 3 It is the second structural schematic diagram of the pixel unit of the display substrate provided by the embodiment of the present application;

[0045] Figure 4 It is the second structural schematic diagram of the display substrate provided by the embodiment of the present application;

[0046] Figure 5 It is the third structural schematic diagram of the display substrate provided by the embodiment of the present application;

[0047] Figure 6 It is the fourth structural schematic diagram of the display substrate provided by the embodiment of the present application;

[0048] Figure 7 This is the third structural schematic diagram of the pixel unit of the display substrate provided by the embodiment of the present application;

[0049] Figure 8 This is the light-emitting schematic diagram of the normal sub-pixel and the anti-peeping sub-pixel of the pixel unit of the display substrate provided by the embodiment of the present application;

[0050] Figure 9 This is a structural schematic diagram of the pixel driving circuit of the display substrate provided by the embodiment of the present application;

[0051] Figure 10 provided by the embodiment of the present application Figure 9 A timing diagram of the pixel driving circuit shown;

[0052] Figure 11 This is the fourth structural schematic diagram of the pixel unit of the display substrate provided by the embodiment of the present application;

[0053] Figure 12 This is a schematic diagram of a display device provided by the embodiment of the present application;

[0054] Figure 13 This is the fifth structural schematic diagram of the display substrate provided by the embodiment of the present application. Detailed implementation manners

[0055] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art based on the present application belong to the scope of protection of the present application.

[0056] The display substrate of the present application can be applied to display devices such as mobile phones, tablet computers, notebook computers, monitors, cash registers, monitors, and in-vehicle displays.

[0057] Such as Figures 1 to 2 shown, Figure 1 is Figure 2 the schematic cross-sectional view in the A direction in, and the embodiment of the present application provides a display substrate, including:

[0058] a light-emitting layer 02 and an anti-peeping layer 03; the light-emitting layer 02 is disposed between the substrate 01 of the display substrate and the anti-peeping layer 03;

[0059] The display substrate includes a plurality of pixel units, and each pixel unit includes a normal sub-pixel and a privacy sub-pixel; the light-emitting structure 021 of the normal sub-pixel of each pixel unit is disposed around the light-emitting structure 022 of the privacy sub-pixel of the pixel unit;

[0060] The privacy layer 03 includes a plurality of privacy units 031, and each privacy unit 031 corresponds to the light-emitting structure 022 of a privacy sub-pixel. For each privacy unit 031, the privacy unit is configured to limit the viewing angle of the light emitted by the privacy sub-pixel to a preset angle.

[0061] The display substrate includes a plurality of pixel units, and the light-emitting structures of the pixel units are configured to emit light. The light emitted by each pixel unit may be the same or different, and can be specifically determined based on actual conditions. The light-emitting structures of the pixel units are disposed in the light-emitting layer.

[0062] In one example, the light-emitting structure of the pixel unit is configured to emit at least one of the following lights: red light, green light, blue light, white light. That is to say, the light-emitting structure of the pixel unit can be configured to emit red light, the light-emitting structure of the pixel unit can be configured to emit green light, the light-emitting structure of the pixel unit can be configured to emit blue light, and the light-emitting structure of the pixel unit can be configured to emit white light.

[0063] Exemplarily, the light-emitting layer includes the light-emitting structure of the pixel unit (R pixel unit) configured to emit red light, the light-emitting structure of the pixel unit (G pixel unit) configured to emit green light, and the light-emitting structure of the pixel unit (B pixel unit) configured to emit blue light.

[0064] When the display substrate is displaying, it includes a non-privacy display mode and a privacy display mode. In the non-privacy display mode, the light-emitting structure 021 of the normal sub-pixel and the light-emitting structure 022 of the privacy sub-pixel are lit or only the light-emitting structure 021 of the normal sub-pixel is lit. In the privacy display mode, the light-emitting structure of the privacy sub-pixel is lit. The materials of the light-emitting structure of the normal sub-pixel and the light-emitting structure of the privacy sub-pixel may be the same or different, and the light emitted by the light-emitting structure of the normal sub-pixel and the light-emitting structure of the privacy sub-pixel belonging to the same pixel unit is the same.

[0065] The light-emitting structure of the normal sub-pixel of each pixel unit is disposed around the light-emitting structure of the privacy sub-pixel of the pixel unit. Because the light-emitting structure of the normal sub-pixel is disposed around the light-emitting structure of the privacy sub-pixel of the pixel unit, when in the privacy mode and the normal sub-pixel is not lit, only the middle privacy sub-pixel emits light and the surrounding light is not lit, which limits the viewing angle and helps to improve the privacy efficiency.

[0066] Such as Figure 3As shown, taking the display substrate including R pixel units, G pixel units, and B pixel units as an example, each pixel unit includes a normal sub-pixel and a privacy sub-pixel. For example, the R pixel unit includes an R normal sub-pixel and an R privacy sub-pixel, the G pixel unit includes a G normal sub-pixel and a G privacy sub-pixel, and the B pixel unit includes a B normal sub-pixel and a B privacy sub-pixel.

[0067] The EL (electroluminescence) structures of the normal sub-pixels and the privacy sub-pixels can be the same or different to ensure possible color deviation problems in different scenarios. The driving circuits for driving the normal sub-pixels and the privacy sub-pixels can be the same or different. That is to say, as Figure 9 shown, the same driving circuit can be used to drive the normal sub-pixels and the privacy sub-pixels. Figure 9 The pixel driving circuit structure of the 7T1C structure shown in includes 7 transistors T1 - T7. Based on the 7T1C structure, T8 and OLED2 are added. Here, T represents a transistor, C represents a storage capacitor, Data is a data signal, C1 is a storage capacitor, VDD is the first power supply voltage, Vss is the second power supply voltage, Vinit is an initialization signal, EM is a scan control signal, and RESET is a reset signal. Figure 9 In, OLED1 is a privacy sub-pixel and OLED2 is a normal sub-pixel. OLED1 and OLED2 share a set of driving circuits, and whether to light OLED1 and OLED2 is controlled by the same driving circuit. The way to light OLED1 by the pixel driving circuit can refer to the way to light OLED by the 7T1C pixel driving circuit in the related technology, which will not be elaborated here.

[0068] By controlling the opening or disconnection of the T8 transistor, it is determined whether to supply power to OLED2, thereby lighting OLED2. Among them, Figure 9 The control timing diagram of the pixel driving circuit shown in is as Figure 10 shown. The timing of the privacy sub-pixel is basically the same as that of the normal pixel circuit, both including a reset stage, a signal writing stage, and a light emitting stage. Figure 9 In, T8 is newly added. Its Gate voltage is the V - EM signal, which has the same timing as the EM signal, but the V - EM level is adjustable and is adjusted in real time by the Driver IC (driver chip). The Driver IC can control the on - off state of T8 by adjusting the change of V - EM, and further control the opening and closing of the privacy sub-pixel. By using the same driving circuit to drive the normal sub-pixels and the privacy sub-pixels, electronic devices can be saved and resources can be conserved.

[0069] Of course, different driving circuits can also be used to drive the normal sub-pixels and the privacy sub-pixels.

[0070] The anti-peeping layer is provided with a plurality of anti-peeping units, and the anti-peeping units correspond one-to-one with the light-emitting structures of the anti-peeping sub-pixels. Since the light-emitting layer is disposed between the substrate of the display substrate and the anti-peeping layer, that is to say, the anti-peeping layer is located on the light-emitting direction side of the light-emitting layer of the pixel unit. For each anti-peeping unit, the anti-peeping unit is configured to limit the viewing field of the light emitted by the anti-peeping sub-pixel corresponding to the anti-peeping unit within a preset angle, wherein the preset angle is smaller than the angle of the viewing field of the light emitted by the anti-peeping sub-pixel.

[0071] In one example, the anti-peeping unit is made of a material with a high refractive index, so that the refractive index of the film layer covering the side of the anti-peeping unit away from the light-emitting layer is smaller than the refractive index of the anti-peeping unit, and the orthographic projection of the anti-peeping unit on the substrate covers the orthographic projection of the anti-peeping sub-pixel corresponding to the anti-peeping unit on the substrate. When the light emitted by the light-emitting structure of the anti-peeping sub-pixel exits from the anti-peeping unit, refraction occurs, and the refraction angle is smaller than the incident angle. It is equivalent to that when the light emitted by the anti-peeping sub-pixel exits from the anti-peeping unit, it is from an optically dense medium to an optically sparse medium, and the light refracts, and the refraction angle is smaller than the incident angle, so that the light emitted by the light-emitting structure of the anti-peeping sub-pixel can only be observed at a certain angle, narrowing the light-emitting area of the light and limiting the viewing field angle.

[0072] The anti-peeping unit can adopt a high-refractive-index OC (cured film protective layer). The high-refractive-index OC can be placed alone in the TFE (Thin Film Encapsulation) encapsulation of the display substrate. Exemplarily, a high-refractive-index OC layer is separately provided in the display substrate, and the high-refractive-index OC layer is located on the side of the light-emitting layer of the display substrate away from the substrate of the display substrate. The high-refractive-index OC can also be placed in the FMLOC (touch control) layer, and the specific position can be adjusted.

[0073] For example, the anti-peeping unit can be an organic material, for example, an optical adhesive.

[0074] The display substrate may further include a TFE encapsulation layer. The encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in a direction away from the light-emitting layer. The anti-peeping unit is located between the organic layer and the first inorganic layer, and the refractive index of the anti-peeping unit is greater than the refractive index of the organic layer. When the light exits from the anti-peeping unit to the TFE, refraction occurs, and the refraction angle is smaller than the incident angle, limiting the viewing field angle and helping to improve the anti-peeping efficiency.

[0075] Generally, an inorganic metal layer CVD1 (first inorganic layer) is first deposited above the light-emitting structure of the display substrate, and then IJP organic material (organic layer) is performed to achieve the flatness of the display substrate. Finally, an inorganic material is deposited to form CVD2 (second inorganic layer) to coat the organic IJP to ensure the stability of the encapsulation.

[0076] In an embodiment of the present application, before forming the IJP planarization layer, an anti-peeking unit is formed in the light-emitting region of the anti-peeking sub-pixel above CVD1 using a high-refractive-index OC material. Among them, the high-refractive-index OC can be selectively doped with high-refractive-index particles, and then IJP organic material printing is performed to form the IJP planarization layer. The high-refractive-index OC realizes the refraction of light and adjusts the light-emitting effect at a large viewing angle.

[0077] In some embodiments, as an alternative or combination, the anti-peeking unit can also be located between the organic layer and the second inorganic layer, and the refractive index of the anti-peeking unit is greater than that of the second inorganic layer; the anti-peeking unit can also be located between the respective film layers included in the touch layer, or between the encapsulation layer and the touch layer, as long as the refractive index relationship satisfies that the refractive index of the anti-peeking unit is greater than that of the film layer on the side away from the display substrate.

[0078] In some embodiments, the high-refractive-index OC can be combined with the Color Film of the display substrate to form a gray color film Gray_OC (a film layer whose material properties can transmit in the R, G, B visible light bands and is used to replace the monochromatic filter film layer). For example, the transmittance spectral curve of the gray color film has transmittance peaks in the red, blue, and green bands.

[0079] As Figure 13 shown, the display substrate includes PI, Buffer1 (the first inorganic layer), Buffe2 (the second inorganic layer), GI1 (the first gate insulating layer), GI2 (the second gate insulating layer), Buffer3 (the third inorganic layer), GI3 (the third gate insulating layer), ILD (the interlayer dielectric layer), PLN1 (the first planarization layer), PLN2 (the second planarization layer), PDL (the pixel spacer structure), TFE, where TFE includes CVD (chemical vapor deposition layer) 1, IJP TFE, CVD2, Buffer4 (the fourth inorganic layer), Gate (the gate), Poly (polycrystalline silicon). Figure 13 It also includes the light-emitting structure 021 of the conventional sub-pixel, the light-emitting structure 022 of the anti-peeking sub-pixel, and the color film layer 0003. Among them, the color film layer includes the first color film layer 00032 without high-refractive-index material and Gray_OC formed by combining the high-refractive-index OC with the color film of the display substrate. Gray_OC formed by combining the high-refractive-index OC with the color film of the display substrate is the anti-peeking unit 031, the anode electrode 004, and the spacer layer 005.

[0080] Exemplarily, the refractive index of Gray_OC is higher than that of IJP. For example, the refractive index of Gray_OC is 0.3 ± 0.1 higher than that of IJP to adjust the light emission of the anti-peeking sub-pixel and the light emission at a large viewing angle of the conventional sub-pixel.

[0081] The Tr% Typical (standard value of transmittance) of R, G, and B of Gray_OC is between 70% and 80%; the film thickness design of the pattern of Gray_OC is about 2μm to 3μm. Gray_OC effectively replaces the monochromatic filter, reduces the number of processes, and reduces costs to achieve anti-peeking. At the same time, in the non-anti-peeking display mode, both the conventional sub-pixels and the anti-peeking sub-pixels are turned on, which improves the light extraction efficiency of the conventional sub-pixels to a certain extent and improves the image quality display effect of the conventional sub-pixels.

[0082] The outer shape design of the anti-peeking unit can be trapezoidal. By adjusting the tilt angle of the trapezoid and the concentration of the doped high-refractive particles, the light extraction angle can be adjusted.

[0083] In another example, the anti-peeking unit is composed of a BM (Black Matrix structure) and a light extraction structure. The BM structure is arranged around the light extraction structure; the orthographic projection of the light-emitting structure of the anti-peeking sub-pixel on the substrate covers the orthographic projection of the light extraction structure on the substrate.

[0084] In this way, the BM surrounds the light-emitting structure of the anti-peeking sub-pixel. Through the BM, the light extraction around the light-emitting structure of the anti-peeking sub-pixel can be blocked without affecting the light extraction in the light extraction area, so that the light emitted by the anti-peeking sub-pixel can only be observed at a certain angle, narrowing the light extraction area of the light and limiting the viewing angle.

[0085] In the non-anti-peeking display mode, the conventional sub-pixels and the anti-peeking sub-pixels are lit or only the conventional sub-pixels are lit. In the anti-peeking display mode, the anti-peeking sub-pixels are lit. In this way, in the anti-peeking mode, only the anti-peeking sub-pixels emit light. Due to the existence of the anti-peeking layer, the light emitted by the anti-peeking sub-pixels can only be observed at a certain angle, limiting the viewing angle and improving the anti-peeking efficiency.

[0086] In a possible implementation manner, it further includes:

[0087] An anode layer; the anode layer is arranged between the light-emitting layer and the substrate;

[0088] The anode layer includes a plurality of anode electrodes, and each anode electrode is connected to the light-emitting structure of a sub-pixel; the sub-pixel is the conventional sub-pixel or the anti-peeking sub-pixel.

[0089] In the non-anti-peeking display mode, power is supplied to the anode electrode connected to the conventional sub-pixel and the anode electrode connected to the anti-peeking sub-pixel, or only power is supplied to the anode electrode connected to the conventional sub-pixel. In the anti-peeking display mode, power is supplied to the anode electrode connected to the anti-peeking sub-pixel.

[0090] Because each sub-pixel is connected to an anode electrode, for each sub-pixel, whether the sub-pixel is lit can be controlled by controlling the anode electrode connected to its light-emitting structure.

[0091] In one example, as Figure 4 shown, Figure 4 the display substrate in Figure 4 includes PI, Buffer1, Buffe2, GI1, GI2, Buffer3 (the third inorganic layer), GI3, ILD, PLN1, PLN2, PDL, TFE, where TFE includes CVD1, IJP, CVD2, Buffer4, Gate, Poly, Figure 4 also includes the light-emitting structure 021 of the normal sub-pixel, the light-emitting structure 022 of the anti-peeping sub-pixel, the anti-peeping unit 031, the anode electrode 004, and the spacer layer 005.

[0092] The anode layer includes a plurality of anode electrodes. After the anode electrode is connected to the light-emitting structure of the sub-pixel, the anode electrode can control whether the sub-pixel is lit or not. The anode electrode and the light-emitting structure of the sub-pixel are in a one-to-one correspondence. The light-emitting structure of one normal sub-pixel is connected to one anode electrode, and the light-emitting structure of one anti-peeping sub-pixel is connected to one anode electrode. The anode electrode connected to the normal sub-pixel is energized in the non-anti-peeping display mode and not energized in the anti-peeping display mode. In this way, the normal sub-pixel is lit in the non-anti-peeping display mode and not lit in the anti-peeping display mode. That is to say, in the non-anti-peeping display mode, both the normal sub-pixel and the anti-peeping sub-pixel are lit or only the normal sub-pixel is lit. In the anti-peeping display mode, the anti-peeping sub-pixel is lit.

[0093] As Figure 8 shown, Figure 8 is a schematic diagram of the light output of the normal sub-pixel and the anti-peeping sub-pixel. The display substrate includes an anode electrode, a light-emitting layer, PDL, TFE, where TFE includes CVD1, IJP, CVD2, Buffer4. Figure 8 shows the viewing field of the light output of the normal sub-pixel and the viewing field of the light output of the anti-peeping sub-pixel.

[0094] In a possible implementation manner, the display substrate further includes a pixel definition structure;

[0095] The pixel definition structure isolates the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeping sub-pixel in the same pixel unit.

[0096] Setting the pixel definition structure between the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeping sub-pixel in the same pixel unit can distinguish the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeping sub-pixel, and can visually view which is the light-emitting structure of the normal sub-pixel and which is the light-emitting structure of the anti-peeping sub-pixel.

[0097] Exemplarily, as Figures 4 to 5The pixel definition structure 006 therein, the pixel definition structure 006 is designed as a dam structure, and the light-emitting structures of the normal sub-pixels and the anti-peeking sub-pixels are isolated by the pixel definition structure. In one example, such as Figure 5 shown Figure 5 The display substrate in includes PI, Buffer1, Buffe2, GI1, GI2, Buffer3, GI3, ILD, PLN1, PLN2, PDL, TFE, where TFE includes CVD1, IJP, CVD2, Buffer4, Gate, Poly, the light-emitting structure 021 of the normal sub-pixel, the light-emitting structure 022 of the anti-peeking sub-pixel, the anti-peeking unit 031, the anode electrode 004, the spacer layer 005, and the pixel definition structure 006 (dam structure). Figure 5 The light-emitting structure of the anti-peeking sub-pixel and the light-emitting structure of the normal sub-pixel in can be spaced by a small size and the pixel definition structure 006 (dam structure). In this way, the pixel pitch can be reduced, which can not only distinguish the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeking sub-pixel, but also effectively utilize the space of the display substrate.

[0098] In a possible implementation manner, the light-emitting layer includes a plurality of light-emitting structures, and the normal sub-pixels and the anti-peeking sub-pixels in the same pixel unit share one light-emitting structure; the anode electrodes connected to the normal sub-pixels and the anode electrodes connected to the anti-peeking sub-pixels in the same pixel unit are arranged at intervals.

[0099] In some implementation manners, the light-emitting layers of the anti-peeking sub-pixels and the normal sub-pixels in the same pixel unit can be connected or arranged at intervals.

[0100] In some implementation manners, the anode of the normal sub-pixel surrounds the anode of the anti-peeking sub-pixel of the pixel unit.

[0101] Exemplarily, such as Figures 6 to 7 shown Figure 6 is a cross-sectional schematic diagram of the display substrate, Figure 7 is a plan schematic diagram of the display substrate, Figure 6The display substrate therein includes PI, Buffer1, Buffe2, GI1, GI2, Buffer3, GI3, ILD, PLN1, PLN2, PDL, TFE, where TFE includes CVD1, IJP, CVD2, Buffer4, Gate, Poly, the light-emitting structure 021 of the normal sub-pixel, the light-emitting structure 022 of the anti-peeking sub-pixel, the anti-peeking unit 031, the anode electrode 004, and the spacer layer 005. Among them, the light-emitting structure 021 of the normal sub-pixel and the light-emitting structure 022 of the anti-peeking sub-pixel share a light-emitting structure, that is, the light-emitting structures of the normal sub-pixel and the anti-peeking sub-pixel are not separated, but only the anode electrodes connected to the normal sub-pixel and the anti-peeking sub-pixel are distinguished. The anode electrode connected to the normal sub-pixel and the anode electrode connected to the anti-peeking sub-pixel are arranged at intervals. In this way, in the non-anti-peeking display mode, the normal sub-pixel and the anti-peeking sub-pixel are lit or only the normal sub-pixel is lit, and in the anti-peeking display mode, the anti-peeking sub-pixel is lit.

[0102] The cross-sectional area of the light-emitting structure of the normal sub-pixel and the cross-sectional area of the light-emitting structure of the anti-peeking sub-pixel can be in any ratio such as 1:1, 1:2, etc., as long as the brightness of the pure anti-peeking area is sufficient.

[0103] In a possible implementation manner, the cross-sectional area of the light-emitting structure of the normal sub-pixel is equal to the cross-sectional area of the light-emitting structure of the anti-peeking sub-pixel.

[0104] The embodiment of the present application also provides a display substrate, including:

[0105] A light-emitting layer and an anti-peeking layer; the light-emitting layer is arranged between the substrate of the display substrate and the anti-peeking layer;

[0106] The display substrate includes a plurality of pixel units, and each pixel unit includes a normal sub-pixel and an anti-peeking sub-pixel; the light-emitting structure of the normal sub-pixel of each pixel unit and the light-emitting structure of the anti-peeking sub-pixel of this pixel unit are adjacent to each other in a plane perpendicular to the light-emitting direction of the display substrate;

[0107] The anti-peeking layer includes a plurality of anti-peeking units, and each anti-peeking unit corresponds to the light-emitting structure of an anti-peeking sub-pixel. For each anti-peeking unit, the anti-peeking unit is used to limit the viewing field of the light emitted by the anti-peeking sub-pixel to a preset angle.

[0108] In the non-anti-peeking display mode, the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeking sub-pixel are lit or only the light-emitting structure of the normal sub-pixel is lit, and in the anti-peeking display mode, the light-emitting structure of the anti-peeking sub-pixel is lit.

[0109] The difference between the embodiments of the present application and the above embodiments lies in the structural settings of the light-emitting structures of the normal sub-pixels and the anti-peeking sub-pixels of the pixel unit. In the above embodiments, the light-emitting structure of the normal sub-pixels of the pixel unit surrounds the light-emitting structure of the anti-peeking sub-pixels of the pixel unit. In this embodiment, the light-emitting structures of the normal sub-pixels and the anti-peeking sub-pixels of the same pixel unit are adjacently arranged in a plane perpendicular to the light-emitting direction of the display substrate. The arrangement of each pixel unit can be in a standard RGB stripe arrangement, or in a PenTile (a pixel arrangement method) arrangement, or in a triangular arrangement. The arrangement of each pixel unit can also be arranged based on the actual situation, and specific details are not limited here. In a plane perpendicular to the light-emitting direction of the display substrate, for each pixel unit, the light-emitting structure of the normal sub-pixels of the pixel unit and the light-emitting structure of the anti-peeking sub-pixels of the pixel unit are adjacently arranged.

[0110] The arrangements of different pixel units can be the same or different, and can be specifically set based on the actual situation.

[0111] In one example, specifically as Figure 11 shown, a pixel unit includes 4 B sub-pixels, 4 G sub-pixels, and 1 R sub-pixel. Each B sub-pixel includes a B anti-peeking sub-pixel and a B normal sub-pixel. The R sub-pixel includes an R anti-peeking sub-pixel and an R normal sub-pixel. Each G sub-pixel includes a G anti-peeking sub-pixel and a G normal sub-pixel.

[0112] In a plane perpendicular to the light-emitting direction of the display substrate, the R sub-pixel is located at the center of the pixel unit, and the B sub-pixels and G sub-pixels are alternately arranged around the R sub-pixel. That is to say, every two B sub-pixels are not adjacent, and every two G sub-pixels are not adjacent either.

[0113] The R sub-pixel is divided into an R anti-peeking sub-pixel and an R normal sub-pixel along the first direction, and the R anti-peeking sub-pixel and the R normal sub-pixel are opposite to each other along the first direction; the shapes of the R anti-peeking sub-pixel and the R normal sub-pixel can be the same or different. The shapes of the R anti-peeking sub-pixel and the R normal sub-pixel can be triangular, semi-circular, rectangular, or irregular shapes, etc., and are not limited here.

[0114] Two of the G sub-pixels are respectively divided into a G anti-peeking sub-pixel and a G normal sub-pixel along the first direction, and the G anti-peeking sub-pixel and the G normal sub-pixel of the same G sub-pixel are opposite to each other along the first direction; the shapes of the G anti-peeking sub-pixel and the G normal sub-pixel can be the same or different. The shapes of the G anti-peeking sub-pixel and the G normal sub-pixel can be triangular, semi-circular, rectangular, or irregular shapes, etc., and are not limited here.

[0115] The other two G sub-pixels are respectively divided into a G privacy sub-pixel and a G normal sub-pixel along a second direction, and the same G privacy sub-pixel and G normal sub-pixel are opposite to each other along the second direction; the shapes of the G privacy sub-pixel and the G normal sub-pixel may be the same or different, and the shapes of the G privacy sub-pixel and the G normal sub-pixel may be triangular, semi-circular, rectangular or irregular shapes, etc., which are not limited herein. In a plane perpendicular to the light-emitting direction of the display substrate, the second direction is perpendicular to the first direction.

[0116] Two of the B sub-pixels are respectively divided into a B privacy sub-pixel and a B normal sub-pixel along a third direction, and the same B privacy sub-pixel and B normal sub-pixel are opposite to each other along the third direction; the shapes of the B privacy sub-pixel and the B normal sub-pixel may be the same or different, and the shapes of the B privacy sub-pixel and the B normal sub-pixel may be triangular, semi-circular, rectangular or irregular shapes, etc., which are not limited herein. The third direction forms an angle of 45° with both the second direction and the first direction.

[0117] The other two B sub-pixels are respectively divided into a B privacy sub-pixel and a B normal sub-pixel along a fourth direction, and the same B privacy sub-pixel and B normal sub-pixel are opposite to each other along the fourth direction; the shapes of the B privacy sub-pixel and the B normal sub-pixel may be the same or different, and the shapes of the B privacy sub-pixel and the B normal sub-pixel may be triangular, semi-circular, rectangular or irregular shapes, etc., which are not limited herein. The fourth direction forms an angle of 45° with both the second direction and the first direction, and the fourth direction forms an angle of 90° with the third direction.

[0118] For adjacent B sub-pixels and G sub-pixels, the order of the B privacy sub-pixel, B normal sub-pixel, G privacy sub-pixel, and G normal sub-pixel can be set as needed. Exemplarily, for adjacent B sub-pixels and G sub-pixels, the B privacy sub-pixel and the G privacy sub-pixel are adjacent, and the B normal sub-pixel and the G normal sub-pixel are not adjacent.

[0119] In the non-privacy display mode, the light-emitting structures of the normal sub-pixels and the privacy sub-pixels are lit or only the light-emitting structures of the normal sub-pixels are lit, and in the privacy display mode, the light-emitting structures of the privacy sub-pixels are lit. Thus, in the privacy mode, only the privacy sub-pixels emit light. Due to the presence of the privacy layer, the light emitted by the privacy sub-pixels can only be observed at a certain angle, limiting the viewing angle and improving the privacy efficiency.

[0120] The anti-peeping layer is provided with a plurality of anti-peeping units, and the anti-peeping units correspond one-to-one to the light-emitting structures of the anti-peeping sub-pixels. Since the light-emitting layer is disposed between the substrate of the display substrate and the anti-peeping layer, that is to say, the anti-peeping layer is located on the light-emitting direction side of the light-emitting layer of the pixel unit. For each anti-peeping unit, the anti-peeping unit is configured to limit the viewing field of the light emitted by the anti-peeping sub-pixel corresponding to the anti-peeping unit to a preset angle, wherein the preset angle is smaller than the angle of the viewing field of the light emitted by the anti-peeping sub-pixel.

[0121] In a possible implementation manner, the anti-peeping unit is made of a material with a high refractive index, such that the refractive index of the film layer covering the side of the anti-peeping unit away from the light-emitting layer is smaller than the refractive index of the anti-peeping unit, and the orthographic projection of the anti-peeping unit on the substrate covers the orthographic projection of the anti-peeping sub-pixel corresponding to the anti-peeping unit on the substrate. When the light emitted by the light-emitting structure of the anti-peeping sub-pixel exits from the anti-peeping unit, refraction occurs, and the refraction angle is smaller than the incident angle. It is equivalent to that when the light emitted by the anti-peeping sub-pixel exits from the anti-peeping unit, it is from an optically denser medium to an optically thinner medium, and the light undergoes refraction, and the refraction angle is smaller than the incident angle, so that the light emitted by the light-emitting structure of the anti-peeping sub-pixel can only be observed at a certain angle, narrowing the light-emitting area of the light and limiting the viewing field angle.

[0122] The anti-peeping unit can adopt a high-refractive-index OC. The high-refractive-index OC can be separately placed in the TFE package of the display substrate. Exemplarily, a high-refractive-index OC layer is separately provided in the display substrate, and the high-refractive-index OC layer is located on the side of the light-emitting layer of the display substrate away from the substrate of the display substrate. The high-refractive-index OC can also be placed in the FMLOC layer, and the specific position can be adjusted.

[0123] For example, the anti-peeping unit can be an organic material, for example, an optical adhesive.

[0124] The display substrate may further include a packaging layer TFE. The packaging layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in a direction away from the light-emitting layer.

[0125] Generally, an inorganic metal layer CVD1 is first deposited above the light-emitting structure of the display substrate, and then IJP organic materials are deposited to achieve the flatness of the display substrate. Finally, an inorganic material is deposited to form CVD2 to coat the organic IJP to ensure the stability of the package.

[0126] In the embodiment of the present application, an anti-peeping unit is formed in the light-emitting area of the anti-peeping sub-pixel by using a material high-refractive-index OC above CVD1 before forming the IJP flat layer. Among them, the high-refractive-index OC can be selectively doped with high-refractive-index particles, and then IJP organic materials are printed to form an IJP flat layer. The high-refractive-index OC realizes the refraction of light and adjusts the light-emitting effect of a large viewing angle.

[0127] In some embodiments, as an alternative or in combination, the anti-peeking unit may also be located between the organic layer and the second inorganic layer, and the refractive index of the anti-peeking unit is greater than that of the second inorganic layer; the anti-peeking unit may also be located between the respective film layers included in the touch layer, or between the encapsulation layer and the touch layer, as long as the refractive index relationship satisfies that the refractive index of the anti-peeking unit is greater than that of the film layer on the side away from the display substrate.

[0128] In some embodiments, the high-refractive-index OC can be combined with the Color Film of the display substrate to form a gray color film Gray_OC (a film layer whose material properties can transmit in the visible light bands of R, G, and B and is used to replace the monochromatic filter film layer). For example, the transmittance spectral curve of the gray color film has transmittance peaks in the red, blue, and green bands.

[0129] The outer shape of the anti-peeking unit can be trapezoidal, and the light-emitting angle can be adjusted by adjusting the inclination angle of the trapezoid and the concentration of the doped high-refractive-index particles.

[0130] In another example, the anti-peeking unit is composed of a BM (Black Matrix) structure and a light-emitting structure, and the BM structure is arranged around the light-emitting structure; the light-emitting structure of the anti-peeking sub-pixel covers the orthographic projection of the light-emitting structure on the substrate.

[0131] In this way, the BM surrounds the light-emitting structure of the anti-peeking sub-pixel. The BM can block the light emitted around the light-emitting structure of the anti-peeking sub-pixel without affecting the light emission in the light-emitting area, so that the light emitted by the anti-peeking sub-pixel can only be observed at a certain angle, narrowing the light-emitting area of the light and limiting the viewing angle.

[0132] In the non-anti-peeking display mode, the conventional sub-pixels and the anti-peeking sub-pixels are lit or only the conventional sub-pixels are lit. In the anti-peeking display mode, the anti-peeking sub-pixels are lit. In this way, only the anti-peeking sub-pixels emit light in the anti-peeking mode. Due to the presence of the anti-peeking layer, the light emitted by the anti-peeking sub-pixels can only be observed at a certain angle, limiting the viewing angle and improving the anti-peeking efficiency.

[0133] In a possible embodiment, the display substrate further includes:

[0134] An anode layer; the anode layer is disposed between the light-emitting layer and the substrate;

[0135] The anode layer includes a plurality of anode electrodes, and each anode electrode is connected to the light-emitting structure of a sub-pixel; the sub-pixel is the conventional sub-pixel or the anti-peeking sub-pixel.

[0136] In a non-anti-peeking display mode, power is supplied to the anode electrode connected to the normal sub-pixel and the anode electrode connected to the anti-peeking sub-pixel, or power is only supplied to the anode electrode connected to the normal sub-pixel. In an anti-peeking display mode, power is supplied to the anode electrode connected to the anti-peeking sub-pixel.

[0137] Since each sub-pixel is connected to an anode electrode, for each sub-pixel, whether the sub-pixel is lit can be controlled by controlling the anode electrode connected to its light-emitting structure.

[0138] The anode layer includes a plurality of anode electrodes. After the anode electrode is connected to the light-emitting structure of the sub-pixel, the anode electrode can control whether the sub-pixel is lit. There is a one-to-one correspondence between the anode electrode and the light-emitting structure of the sub-pixel. The light-emitting structure of a normal sub-pixel is connected to one anode electrode, and the light-emitting structure of an anti-peeking sub-pixel is connected to one anode electrode. The anode electrode connected to the normal sub-pixel is powered on in a non-anti-peeking display mode and not powered on in an anti-peeking display mode. In this way, the normal sub-pixel is lit in a non-anti-peeking display mode and not lit in an anti-peeking display mode. That is to say, in a non-anti-peeking display mode, the normal sub-pixel and the anti-peeking sub-pixel are lit simultaneously or only the normal sub-pixel is lit. In an anti-peeking display mode, the anti-peeking sub-pixel is lit.

[0139] In a possible implementation manner, the display substrate further includes a pixel definition structure;

[0140] The pixel definition structure isolates the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeking sub-pixel in the same pixel unit.

[0141] By setting a pixel definition structure between the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeking sub-pixel in the same pixel unit, the light-emitting structure of the normal sub-pixel and the light-emitting structure of the anti-peeking sub-pixel can be distinguished, and it can be intuitively seen which are the light-emitting structures of the normal sub-pixels and which are the light-emitting structures of the anti-peeking sub-pixels.

[0142] In a possible implementation manner, the light-emitting layer includes a plurality of light-emitting structures. The normal sub-pixel and the anti-peeking sub-pixel in the same pixel unit share one light-emitting structure; the anode electrode connected to the normal sub-pixel and the anode electrode connected to the anti-peeking sub-pixel in the same pixel unit are arranged at intervals.

[0143] In some implementation manners, the light-emitting layers of the anti-peeking sub-pixel and the normal sub-pixel in the same pixel unit can be connected or arranged at intervals.

[0144] In some implementation manners, the anode of the normal sub-pixel surrounds the anode of the anti-peeking sub-pixel of the pixel unit.

[0145] The cross-sectional area of the light-emitting structure of the regular sub-pixel and the cross-sectional area of the light-emitting structure of the anti-peeking sub-pixel can be in any ratio such as 1:1, 1:2, etc., as long as the brightness of the pure anti-peeking area is sufficient.

[0146] In a possible implementation, the cross-sectional area of the light-emitting structure of the regular sub-pixel is equal to the cross-sectional area of the light-emitting structure of the anti-peeking sub-pixel.

[0147] In this application, the specific type of the sub-pixel is not limited. For example, each embodiment of this application is applicable to organic light-emitting diodes (OLEDs), stacked organic light-emitting diodes (Tandom OLEDs), quantum dot organic light-emitting diodes (QDOLEDs), light-emitting diodes (LEDs, Light Emitting Diodes), micro-LEDs (including: mini-LED or micro-LED), or liquid crystal displays (LCDs), etc.

[0148] An embodiment of this application also provides a display device, including the display substrate described in any one of the above.

[0149] The display device of this application can be a mobile phone, a tablet computer, a notebook computer, a monitor, a cash register, a monitor, an in-vehicle display screen, etc.

[0150] In a possible implementation, the display device further includes a control unit;

[0151] The control unit is used to detect whether the display device meets a preset anti-peeking condition in the display state. In the case of meeting the condition, it controls the regular sub-pixels of the display substrate not to light up, and the anti-peeking sub-pixels to light up. In the case of not meeting the condition, it controls both the regular sub-pixels and the anti-peeking sub-pixels to light up.

[0152] The control unit can be a unit that detects whether the display device meets a preset anti-peeking condition in the display state. In the case of meeting the condition, it controls the regular sub-pixels of the display substrate not to light up, and the anti-peeking sub-pixels to light up. In the case of not meeting the condition, it controls both the regular sub-pixels and the anti-peeking sub-pixels to light up. In this way, intelligent anti-peeking automatic switching of the display device can be realized.

[0153] In a possible implementation, the control unit obtains the content to be displayed by the display device. In the case where the content to be displayed is private content, it determines that the display device meets the preset anti-peeking condition in the display state.

[0154] The user can add identification information to the content that the display device needs to display to identify whether the displayed content needs anti-peeking or not. Exemplarily, identification information is added to the content to be displayed in advance, and the identification information includes anti-peeking and non-anti-peeking.

[0155] The control unit can detect the content to be displayed on the display device, and based on the identification information of the content to be displayed, determine whether the content to be displayed is private content. If so, it controls the normal sub-pixels not to light up and controls the anti-peeping sub-pixels to light up, thereby switching to the anti-peeping mode.

[0156] In a possible implementation manner, the control unit detects the image information of the anti-peeping viewing angle of the display device. When the anti-peeping viewing angle includes a human eye, it is determined that the display device meets the preset anti-peeping condition in the display state.

[0157] The display device is pre-set with an anti-peeping viewing angle. Exemplarily, as Figure 12 shown, the display device is a mobile phone. The content to be displayed can be shown on the mobile phone screen. It is stipulated that the viewing field where the angle between the human eye's line of sight and the mobile phone screen is not greater than the preset angle is the anti-peeping viewing angle. The control unit of the display device detects the image information of the anti-peeping viewing angle of the display device, and detects whether there is a human eye in the anti-peeping viewing angle of the display device, so as to detect whether there is someone else watching the screen. If so, it controls the normal sub-pixels not to light up and controls the anti-peeping sub-pixels to light up, thereby switching to the anti-peeping mode.

[0158] The embodiment of the present application also provides a display method for a display device, which is applied to the control unit in the display device. The display device further includes the display substrate according to any one of the above embodiments, and includes:

[0159] Detect whether the display device meets the preset anti-peeping condition in the display state. If it meets, control the normal sub-pixels of the display substrate not to light up and the anti-peeping sub-pixels to light up. If it does not meet, control both the normal sub-pixels and the anti-peeping sub-pixels to light up.

[0160] In a possible implementation manner, the detecting whether the display device meets the preset anti-peeping condition in the display state includes:

[0161] Obtain the content to be displayed on the display device. When the content to be displayed is private content, it is determined that the display device meets the preset anti-peeping condition in the display state.

[0162] In a possible implementation manner, the detecting whether the display device meets the preset anti-peeping condition in the display state includes:

[0163] Detect the image information of the anti-peeping viewing angle of the display device. When the anti-peeping viewing angle includes a human eye, it is determined that the display device meets the preset anti-peeping condition in the display state.

[0164] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0165] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the embodiments of the display device, since it is basically similar to the method embodiments, the description is relatively simple, and reference can be made to the corresponding parts of the method embodiments for the relevant content.

[0166] The above are only the preferred embodiments of the present application and are not intended to limit the protection scope of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application are all included in the protection scope of the present application.

Claims

1. A display substrate, characterized in that: include: A light-emitting layer and an anti-peeping layer; the light-emitting layer is arranged between the substrate of the display substrate and the anti-peeping layer; The display substrate includes a plurality of pixel units, each of which includes a regular sub-pixel and an anti-peeping sub-pixel; the light-emitting layer includes a light-emitting structure of a regular sub-pixel and a light-emitting structure of an anti-peeping sub-pixel, and the light-emitting structure of the regular sub-pixel of each pixel unit is arranged around the light-emitting structure of the anti-peeping sub-pixel of the pixel unit; The anti-peeping layer includes a plurality of anti-peeping units, and each anti-peeping unit corresponds to a light-emitting structure of an anti-peeping sub-pixel.

2. The display substrate according to claim 1, characterized in that: For each anti-peeping unit, the orthographic projection of the anti-peeping unit on the substrate covers the orthographic projection of the light-emitting structure of the anti-peeping sub-pixel corresponding to the anti-peeping unit on the substrate; the display substrate further includes an encapsulation layer, and the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in a direction away from the light-emitting layer; The anti-peeping unit is located between the organic layer and the first inorganic layer, and the refractive index of the anti-peeping unit is greater than the refractive index of the organic layer.

3. The display substrate according to claim 1 or 2, characterized in that: The display substrate further comprises: an anode layer; the anode layer is arranged between the light-emitting layer and the substrate; The anode layer includes a plurality of anode electrodes, each of which is connected to a light-emitting structure of a sub-pixel; the sub-pixel is the conventional sub-pixel or the anti-peeping sub-pixel; The anode electrode connected to the conventional sub-pixel and the anode electrode connected to the anti-peeping sub-pixel in the same pixel unit are arranged at intervals.

4. The display substrate according to claim 1 or 2, characterized in that: The anti-peeping unit comprises a gray color film, and a transmittance spectrum curve of the gray color film has transmittance peaks in the red, blue and green wave bands.

5. A display substrate, characterized in that: include: A light-emitting layer and an anti-peeping layer; the light-emitting layer is arranged between the substrate of the display substrate and the anti-peeping layer; The display substrate includes a plurality of pixel units, each of which includes a regular sub-pixel and an anti-peeping sub-pixel; the light-emitting layer includes a light-emitting structure of a regular sub-pixel and a light-emitting structure of an anti-peeping sub-pixel, and the light-emitting structure of the regular sub-pixel of each pixel unit and the light-emitting structure of the anti-peeping sub-pixel of the pixel unit are adjacently arranged on a plane perpendicular to the light emitting direction of the display substrate; The anti-peeping layer includes a plurality of anti-peeping units, and each anti-peeping unit corresponds to a light-emitting structure of an anti-peeping sub-pixel.

6. The display substrate according to claim 5, characterized in that: For each anti-peeping unit, the orthographic projection of the anti-peeping unit on the substrate covers the orthographic projection of the light-emitting structure of the anti-peeping sub-pixel corresponding to the anti-peeping unit on the substrate; the display substrate further includes an encapsulation layer, and the encapsulation layer includes a first inorganic layer, an organic layer, and a second inorganic layer stacked in a direction away from the light-emitting layer; The anti-peeping unit is located between the organic layer and the first inorganic layer, and the refractive index of the anti-peeping unit is greater than the refractive index of the organic layer.

7. The display substrate according to claim 5 or 6, characterized in that: The display substrate further comprises: an anode layer; the anode layer is arranged between the light-emitting layer and the substrate; The anode layer includes a plurality of anode electrodes, each of which is connected to a sub-pixel; the sub-pixel is the conventional sub-pixel or the anti-peeping sub-pixel; The anode electrode connected to the conventional sub-pixel and the anode electrode connected to the anti-peeping sub-pixel in the same pixel unit are arranged at intervals.

8. The display substrate according to claim 5 or 6, characterized in that: The anti-peeping unit comprises a gray color film, and a transmittance spectrum curve of the gray color film has transmittance peaks in the red, blue and green wave bands.

9. A display device, characterized in that: The display substrate comprises any one of claims 1 to 4 or claims 5 to 8.

10. A display method, characterized in that: The display device according to claim 9, comprising: Detect whether the display device meets a preset anti-peeping condition in the display state. If so, control the regular sub-pixels of the display substrate to not light up and the anti-peeping sub-pixels to light up. If not, control both the regular sub-pixels and the anti-peeping sub-pixels to light up or only the regular sub-pixels to light up.

Images