CN116419610A - Display screen and electronic equipment - Google Patents

Abstract

The embodiment of the application provides a display screen and electronic equipment, relates to the technical field of display. The display screen includes light emitting sub-pixels and pixel driving circuits for driving the light emitting sub-pixels. The light emitting sub-pixel includes at least one first light emitting sub-pixel device and at least one second light emitting sub-pixel device. The pixel driving circuit comprises a plurality of independently controlled pixel driving branches, and each pixel driving branch drives one light-emitting sub-pixel device. The display screen further comprises a light condensing piece, wherein the light condensing piece is arranged on the light emitting side of the first light emitting sub-pixel device and used for reducing the light emitting angle of the first light emitting sub-pixel device. By the design, when the first luminous sub-pixel device in the luminous sub-pixel is controlled to work, the content displayed by the display screen can be visible in a narrower visible range, so that the purpose of active peeping prevention is achieved.

Description

Display screen and electronic equipment

Technical Field

The application relates to the technical field of display, in particular to a display screen and electronic equipment.

Background

An OLED (Organic Light-Emitting Diode) display screen adopts an OLE device as a Light Emitting subpixel, and is widely used in electronic devices because the OLED display screen has characteristics such as low power consumption, light weight, large viewing angle, light weight, and the like. In daily work and life, a user may have a peep-proof requirement when using an electronic device (such as a smart phone, a computer or an ATM cash dispenser, etc.), however, an active peep-proof scheme for an OLED display screen is lacking at present, which results in poor peep-proof effect of the current OLED display screen.

Disclosure of Invention

In order to overcome the technical problems mentioned in the background, embodiments of the present application provide a display screen and an electronic device.

In a first aspect of the present application, there is provided a display screen comprising light emitting sub-pixels and pixel driving circuitry for driving the light emitting sub-pixels;

the light emitting sub-pixel comprises at least one first light emitting sub-pixel device and at least one second light emitting sub-pixel device;

the pixel driving circuit comprises a plurality of independently controlled pixel driving branches, the plurality of pixel driving branches comprise a first pixel driving branch and a second pixel driving branch, the first pixel driving branch drives the first luminous sub-pixel device, and the second pixel driving branch drives the second luminous sub-pixel device;

the display screen further comprises a light condensing piece, wherein the light condensing piece is arranged on the light emitting side of the first light emitting sub-pixel device and used for reducing the light emitting angle of the first light emitting sub-pixel device.

In the display screen, each light-emitting sub-pixel comprises at least one first light-emitting sub-pixel device and at least one second light-emitting sub-pixel device, different light-emitting sub-pixel devices can be driven by independently controlled pixel driving branches, and meanwhile, a light-emitting side of the first light-emitting sub-pixel device is provided with a light-gathering piece for reducing a light-emitting angle.

In a possible embodiment of the present application, the pixel driving branch is connected to an anode of the light emitting sub-pixel device;

the anodes of different light-emitting sub-pixel devices in the light-emitting sub-pixels are mutually insulated.

In one possible embodiment of the present application, the first pixel driving branch and the second pixel driving branch each include a first transistor, a second transistor, and a third transistor sequentially connected in series;

in the same pixel driving branch, the output end of the first transistor is connected with the input end of the second transistor, and the output end of the second transistor is connected with the input end of the third transistor;

the second transistor is a driving transistor, and the first transistor and the third transistor are switching transistors.

In one possible embodiment of the present application, in the same pixel driving circuit, the input ends of the first transistors of different pixel driving branches are connected to the same power supply signal, the input ends of the second transistors of different pixel driving branches are connected to the same data signal, and the control ends of the second transistors of different pixel driving branches are connected to the same control signal;

the control end of the first transistor and the control end of the third transistor in the first pixel driving branch are connected with a first light-emitting control signal, and the control end of the first transistor and the control end of the third transistor in the second pixel driving branch are connected with a second light-emitting control signal;

the output end of the third transistor in the first pixel driving branch is connected with the anode of the first light-emitting sub-pixel device, and the output end of the third transistor in the second pixel driving branch is connected with the anode of the second light-emitting sub-pixel device.

In one possible embodiment of the present application, the pixel driving circuit further includes a storage capacitor shared by the first pixel driving branch and the second pixel driving branch;

the input end of the first transistor in the first pixel driving branch circuit and the input end of the first transistor in the second pixel driving branch circuit are both connected with the first electrode of the storage capacitor, and the control end of the second transistor in the first pixel driving branch circuit and the control end of the second transistor in the second pixel driving branch circuit are both connected with the second electrode of the storage capacitor;

preferably, the pixel driving circuit further includes a transistor common to the first pixel driving branch and the second pixel driving branch, the common transistor including at least one of a data writing transistor, an initializing transistor, a threshold voltage compensating transistor, and a reset transistor; the common transistor is connected in the same location in the first pixel driving branch as in the second pixel driving branch.

In a possible embodiment of the present application, anodes of different light emitting sub-pixel devices in the light emitting sub-pixel are distributed adjacently and/or distributed in a surrounding manner.

In one possible embodiment of the present application, when anodes of different light emitting sub-pixel devices in the light emitting sub-pixel are distributed adjacently, the anode of any light emitting sub-pixel device is located at one side of the anode of another light emitting sub-pixel device;

preferably, anodes of the different light-emitting sub-pixel devices are distributed adjacently left and right or adjacently up and down.

In a possible embodiment of the present application, when the anodes of different light emitting sub-pixel devices in the light emitting sub-pixel are distributed in a surrounding manner, at least the anode of one light emitting sub-pixel device at least partially surrounds the anode of another light emitting sub-pixel device;

preferably, anodes of the different light-emitting sub-pixel devices are shaped like a Chinese character 'hui'.

In one possible embodiment of the present application, the light-condensing member includes a lens for reducing a light emission angle of the first light-emitting sub-pixel device;

the lens comprises a planar bottom surface and a top surface protruding outwards relative to the bottom surface, and the bottom surface of the lens is attached to the light emitting side of the first light emitting sub-pixel device.

In a second aspect of the present application, there is provided an electronic device comprising a display screen according to any one of the possible embodiments of the first aspect.

The display screen and the electronic device provided by the embodiment of the application comprise light-emitting sub-pixels and pixel driving circuits for driving the light-emitting sub-pixels. The light emitting sub-pixel includes at least one first light emitting sub-pixel device and at least one second light emitting sub-pixel device. The pixel driving circuit comprises a plurality of independently controlled pixel driving branches, and each pixel driving branch drives one light-emitting sub-pixel device. The display screen further comprises a light condensing piece, wherein the light condensing piece is arranged on the light emitting side of the first light emitting sub-pixel device and used for reducing the light emitting angle of the first light emitting sub-pixel device. By the design, when the first luminous sub-pixel device in the luminous sub-pixel is controlled to work, the content displayed by the display screen can be visible in a narrower visible range, so that the purpose of active peeping prevention is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 illustrates a schematic connection diagram of a pixel driving circuit and a light emitting sub-pixel of a display screen according to the present embodiment;

fig. 2 illustrates one of schematic diagrams of a partial film layer structure of a display screen provided in this embodiment;

FIG. 3 illustrates a schematic diagram of one possible specific circuit configuration of FIG. 1;

FIG. 4 illustrates one of the schematic tables of operating states of devices in a pixel drive leg of FIG. 3;

FIG. 5 illustrates a second exemplary schematic table of operating states of devices in a pixel driving leg of FIG. 3;

FIG. 6 illustrates one of a plurality of distribution diagrams of anodes of light-emitting sub-pixels provided in this embodiment;

FIG. 7 illustrates a second of the various distributions of anodes for light-emitting sub-pixels provided in this embodiment;

fig. 8 illustrates a second schematic diagram of a partial film structure of the display screen according to the present embodiment.

Icon: 10-a display screen; 100-light emitting sub-pixels; 110-a first light emitting sub-pixel device; 120-a second light emitting sub-pixel device; 200-pixel driving circuits; 210-a pixel driving branch; 300-light collector; 310-bottom side; 320-top surface; 400-encapsulation layer.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put when the product of the application is used, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

It should be noted that, in the case of no conflict, different features in the embodiments of the present application may be combined with each other.

The inventor finds that the current peep-proof schemes are mainly divided into an active peep-proof scheme and a passive peep-proof scheme. The passive peep-proof scheme is realized mainly by attaching a peep-proof film, and the peep-proof film mainly utilizes the shading principle of a shutter to shade and absorb light rays with large angles, so that the light rays with small angles penetrate, and the peep-proof effect is realized. The active peep-proof scheme is mainly applied to a liquid crystal display screen, specifically, the liquid crystal molecules are controlled to deflect at different angles through voltage, so that the light-emitting visual angle is influenced, and the peep-proof effect of small visual angle display is achieved. Active peep-proof schemes for OLED displays are currently lacking in the industry.

In order to solve the above-mentioned problems, the inventor innovatively devised the following technical solutions, and the following detailed description will be given for specific implementation of the present application with reference to the accompanying drawings. It should be noted that the above solutions in the prior art all have drawbacks that the inventors have obtained after they have practiced and studied carefully, and thus the discovery process of the above technical problem and the solutions presented in the following embodiments for the above problem should be all contributions of the inventors to the present application during the inventive process, and should not be construed as what is known to those skilled in the art.

Referring to fig. 1 and fig. 2, fig. 1 illustrates a schematic connection diagram of a pixel driving circuit and a light emitting sub-pixel of a display screen provided in this embodiment, and fig. 2 illustrates a schematic partial film structure of the display screen provided in this embodiment. In this embodiment, the display screen 10 includes light emitting sub-pixels 100 and a pixel driving circuit 200 for driving the light emitting sub-pixels 100, each light emitting sub-pixel 100 can emit light of one color, and a plurality of light emitting sub-pixels 100 emitting light of different colors can constitute one light emitting pixel, for example, one red light emitting sub-pixel, one green light emitting sub-pixel, and one blue light emitting sub-pixel constitute one light emitting pixel.

The light emitting sub-pixel 100 includes at least one first light emitting sub-pixel device 110 and at least one second light emitting sub-pixel device 120, and, for example, a red light emitting sub-pixel may include at least one red first light emitting sub-pixel device and at least one red second light emitting sub-pixel device. The pixel driving circuit 200 includes a plurality of independently controlled pixel driving branches 210, where the plurality of pixel driving branches 210 includes a first pixel driving branch for driving the first light emitting sub-pixel device 110 and a second pixel driving branch for driving the second light emitting sub-pixel device 120, and each pixel driving branch 210 can independently control an operation state of one light emitting sub-pixel device, for example, when the light emitting sub-pixel 100 includes one first light emitting sub-pixel device 110 and one second light emitting sub-pixel device 120, as shown in fig. 1, the first light emitting sub-pixel device 110 and the second light emitting sub-pixel device 120 can be controlled by two pixel driving branches 210 (one first pixel driving branch and one second pixel driving branch), respectively.

In this embodiment, the display screen 10 further includes a light-condensing member 300, where the light-condensing member 300 is disposed on the light-emitting side of the first light-emitting sub-pixel device 110, and the light-condensing member 300 is configured to reduce the light-emitting angle of the first light-emitting sub-pixel device 110, so that the light-emitting angle of the light emitted by the first light-emitting sub-pixel device 110 becomes smaller after passing through the light-condensing member 300.

The display screen provided by the embodiment can work in a peep-proof mode with a smaller visual angle and a normal display mode with a larger visual angle. When the pixel driving branch 210 controls the first light emitting sub-pixel device 110 to operate and the second light emitting sub-pixel device 120 to not operate, the display screen 10 operates in the anti-peeping mode; when the pixel driving branch 210 controls the operation of the second light emitting sub-pixel device 120, the display screen 10 operates in the normal display mode, in which case the display screen 10 can display at a larger viewing angle regardless of whether the first light emitting sub-pixel device 110 is operated.

In the above-provided technical solution, when only the first light emitting sub-pixel device 110 in the light emitting sub-pixel 100 is controlled to work, the content displayed by the display screen 10 can be visible in a narrower visible range, so as to achieve the purpose of active peeping prevention.

Further, in this embodiment, the light emitting sub-pixel device is an OLED device, the pixel driving branch 210 is connected to the anode of the light emitting sub-pixel device, and the anodes of different light emitting sub-pixel devices in the same light emitting sub-pixel 100 are mutually insulated. This allows for the individual control of different light emitting sub-pixel devices within the same light emitting sub-pixel 100.

In this embodiment, in order to realize the independent control of the first light emitting sub-pixel device 110 and the second light emitting sub-pixel device 120, in the same pixel driving circuit 200, different pixel driving branches 210 may be controlled to be turned on or off by different light emitting control signals, so as to realize the control of the working state of the light emitting sub-pixel device.

Referring to fig. 3, fig. 3 illustrates a schematic circuit diagram of one possible circuit structure of fig. 1, in which the pixel driving branch 210 includes a first transistor T1, a second transistor T2 and a third transistor T3 sequentially connected in series, an output terminal of the first transistor T1 is connected to an input terminal of the second transistor T2, and an output terminal of the second transistor T2 is connected to an input terminal of the third transistor T3. The second transistor T2 is a driving transistor, the first transistor T1 and the third transistor T3 are switching transistors, the second transistor T2 operates in a saturation region, and the first transistor T1 and the third transistor T3 operate in a linear region.

Further, referring to fig. 3 again, in the same pixel driving circuit, the input ends of the first transistors T1 of different pixel driving branches (the pixel driving branch 210A and the pixel driving branch 210B in the drawing) are connected to the same signal (the power voltage signal VDD in the drawing), the input ends of the second transistors T2 of different pixel driving branches are connected to the same signal (the data voltage signal Vdata in the drawing), the control ends of the second transistors T2 of different pixel driving branches are connected to the same signal (the electrode voltage signal of the storage capacitor C in the drawing), and the output ends of the second transistors T2 of different pixel driving branches are connected to the same signal (the same electrode connection of the threshold voltage compensation transistor T6 in the drawing). Specifically, in the present embodiment, the input ends of the first transistors T1 of different pixel driving branches may be connected to the same node a, the input ends of the second transistors T2 of different pixel driving branches may be connected to the same node B, the control ends of the second transistors T2 of different pixel driving branches may be connected to the same node E, and the input ends of the third transistors T3 of different pixel driving branches may be connected to the same node C. In this embodiment, the pixel driving branch 210A may be a first pixel driving branch or a second pixel driving branch, and the pixel driving branch 210B may be a second pixel driving branch or a first pixel driving branch.

The control ends of the first transistor T1 and the third transistor T3 of the same pixel driving branch are connected together, the control ends of the first transistors T1 of different pixel driving branches are connected with different light-emitting control signals, and the output ends of the third transistors T3 of different pixel driving branches are connected with anodes of different light-emitting sub-pixel devices. Illustratively, the control terminal of the first transistor T1 and the control terminal of the third transistor T3 in the pixel driving branch 210A are connected to the first light emission control signal EM1, and the control terminal of the first transistor T1 and the control terminal of the third transistor T3 in the pixel driving branch 210B are connected to the second light emission control signal EM2. When the pixel driving branch 210A is the second pixel driving branch, the output terminal of the third transistor T3 in the pixel driving branch 210A is connected to the anode of the second light emitting sub-pixel device 120. When the pixel driving branch 210B is the first pixel driving branch, the output end of the third transistor T3 in the pixel driving branch 210B is connected to the anode of the first light emitting sub-pixel device 110.

In this embodiment, the pixel driving circuit 200 further includes a storage capacitor C shared by the first pixel driving branch (210B in the figure) and the second pixel driving branch (210A in the figure), wherein the input terminal of the first transistor T1 in the first pixel driving branch and the input terminal of the first transistor T1 in the second pixel driving branch are both connected to the first electrode of the storage capacitor C; the control end of the second transistor T2 in the first pixel driving branch and the control end of the second transistor T2 in the second pixel driving branch are both connected to the second electrode of the storage capacitor.

Further, referring to fig. 3 again, the pixel driving circuit 200 further includes a transistor shared by the first pixel driving branch and the second pixel driving branch, the shared transistor includes at least one of a data writing transistor, an initializing transistor, a threshold voltage compensating transistor and a reset transistor, the shared transistor is respectively connected to the first pixel driving branch and the second pixel driving branch, and a position of the shared transistor connected to the first pixel driving branch is the same as a position of the shared transistor connected to the second pixel driving branch. The data writing transistor may include a seventh transistor T7, an input terminal of the seventh transistor T7 is connected to the data voltage signal Vdata, a control terminal of the seventh transistor T7 is connected to the first scan signal S1, and an output terminal of the seventh transistor T7 is connected to an input terminal of the second transistor T2 in the first pixel driving branch (210B in the drawing) and an input terminal of the second transistor T2 in the second pixel driving branch (210A in the drawing), respectively. The threshold voltage compensation transistor may include a sixth transistor T6, an output terminal of the sixth transistor T6 is connected to the second electrode of the storage capacitor C, an input terminal of the sixth transistor T6 is connected to an output terminal of the second transistor T2 of the first pixel driving branch and an output terminal of the second transistor T2 of the second pixel driving branch, respectively, and when the first scan signal S1 connected to the control terminal of the sixth transistor T6 is a low level signal, the threshold voltage of the second transistor T2 is compensated. The initialization transistor may include an eighth transistor T8, an input terminal of the eighth transistor T8 is connected to the voltage reset signal Vref, a control terminal of the eighth transistor T8 is connected to the second scan signal S2, and an output terminal of the eighth transistor T8 is connected to the control terminal of the second transistor T2 in the first pixel driving branch and the control terminal of the second transistor T2 in the second pixel driving branch, respectively. The reset transistor may include a ninth transistor T9, an input terminal of the ninth transistor T9 is connected to the voltage reset signal Vref, a control terminal of the ninth transistor T9 is connected to the third scan signal S3, and an output terminal of the ninth transistor T9 is connected to an output terminal of the third transistor T3 in the first pixel driving branch and an output terminal of the third transistor T3 in the second pixel driving branch, respectively.

In this embodiment, the first transistor T1, the second transistor T2, the third transistor T3, the sixth transistor T6, the seventh transistor T7, the eighth transistor T8, and the ninth transistor T9 may be P-type transistors, wherein an input terminal of the transistors is a source, an output terminal of the transistors is a drain, and a control terminal of the transistors is a gate.

In this embodiment, the pixel driving branch 210B may further include a fourth transistor T4 and a fifth transistor T5, the output terminals of the fourth transistor T4 and the fifth transistor T5 are connected to the control terminals of the first transistor T1 and the third transistor T3, and the fourth transistor T4 and the fifth transistor T5 may be P-type transistors.

When the switch1 signal is at a low level, the switch2 signal is at a high level, and the black signal is at a high level, the fourth transistor T4 is turned on, the fifth transistor T5 is turned off, the first transistor T1 and the third transistor T3 are turned off by the high level signal input by the fourth transistor T4, the pixel driving branch 210B is in a non-conductive state, and the first light emitting sub-pixel device 110 driven by the pixel driving branch 210B is turned off.

When the switch1 signal is high and the switch2 signal is low, the fourth transistor T4 is turned off, the fifth transistor T5 is turned on, and the operation states of the first transistor T1 and the third transistor T3 are controlled by the emission control signal EM2. Referring to fig. 3, 4 and 5, in the pixel driving branch 210B, the operating states of the first transistor T1 and the third transistor T3 are controlled by the fourth transistor T4 and the fifth transistor T5, when the fourth transistor T4 is conductive and the fifth transistor T5 is non-conductive, the first transistor T1 and the third transistor T3 are non-conductive, and when the fourth transistor T4 is non-conductive and the fifth transistor T5 is conductive, the operating states of the first transistor T1 and the third transistor T3 are controlled by the second light emission control signal EM2. Taking the example of driving the first light emitting sub-pixel device 110 by the pixel driving branch 210B, when the light emitting control signal EM2 is a low level signal and the control terminal of the second transistor T2 inputs a low level signal, the first transistor T1, the second transistor T2 and the third transistor T3 are turned on, the pixel driving branch 210B is turned on, and the first light emitting sub-pixel device 110 is turned on. When the emission control signal EM2 is a high level signal, the first transistor T1 and the third transistor T3 are turned off, the pixel driving branch 210B is in a non-conductive state, and the first light emitting sub-pixel device 110 is turned off. When a high level signal is input to the control terminal of the second transistor T2, the second transistor T2 is not turned on, the pixel driving branch 210B is in a non-conductive state, and the first light emitting sub-pixel device 110 is turned off.

The control principle of the pixel driving branch 210A is similar to that of the pixel driving branch 210B, and will not be described herein again, when a pixel driving circuit 200 includes more pixel driving branches 210, the same principle can be used to control the light emitting sub-pixel devices driven by the corresponding pixel driving branch 210, which will not be described herein again.

In this embodiment, anodes of different light-emitting sub-pixel devices in the light-emitting sub-pixel 100 are distributed adjacently and/or in a surrounding manner.

Referring to fig. 6, fig. 6 illustrates one of various distribution diagrams of anodes of the light emitting sub-pixel 100, and when anodes of different light emitting sub-pixel devices in the light emitting sub-pixel 100 are distributed adjacently, the anode of any one light emitting sub-pixel device is located at one side of the anode of another light emitting sub-pixel device.

Illustratively, in the anode distribution diagrams of (1) and (2) in fig. 6, the rectangular anode may be divided into two rectangular sub-anodes, which may be the same size or different in size, wherein the two rectangular sub-anodes may be distributed adjacently up and down or adjacently left and right. In the anode distribution diagram of (3) in fig. 6, the trapezoid anode may be divided into one sub-anode having a parallelogram shape and one sub-anode having a trapezoid shape. In the anode distribution diagram of (4) th kind in fig. 6, the hexagonal anode may be divided into three sub-anodes each having a parallelogram shape. In the anode distribution diagram of (5) in fig. 6, an elliptical anode may be divided into two differently shaped sub-anodes by a curve. The sub-anode can be used as the anode of different luminous sub-pixel devices, and any one sub-anode is positioned at one side of the other sub-anode. In this embodiment, it is preferable that anodes of different light emitting sub-pixel devices are distributed adjacently left and right (as in (2) and (5) in fig. 6) or distributed adjacently up and down (as in (1) and (3) in fig. 6).

Referring to fig. 7, fig. 7 illustrates a second of various distribution diagrams of anodes of the light emitting sub-pixel 100, in which when anodes of different light emitting sub-pixel devices in the light emitting sub-pixel 100 are distributed in a surrounding manner, at least one anode of one light emitting sub-pixel device at least partially surrounds an anode of another light emitting sub-pixel device.

Illustratively, in the anode distribution diagram of (1) th in fig. 7, the rectangular anode may be divided into one rectangular sub-anode and a concave-shaped sub-anode partially surrounding the rectangular sub-anode. In the anode distribution diagram of (2) th in fig. 7, the rectangular anode may be divided into one rectangular sub-anode and a ring-shaped sub-anode surrounding the rectangular sub-anode. In the anode distribution diagram of (3) th in fig. 7, the circular anode may be divided into one circular sub-anode and a ring-shaped sub-anode surrounding the circular sub-anode. The sub-anodes may be used as anodes for different light emitting sub-pixel devices, at least one sub-anode at least partially surrounding another sub-anode. In this embodiment, it is preferable that the anodes of the different light emitting sub-pixel devices are in a zigzag shape (as in (2) and (3) of fig. 7).

Further, referring to fig. 8, in the present embodiment, the light-gathering member 300 includes a lens for reducing the light emitting angle of the first light-emitting sub-pixel device 110, the lens includes a planar bottom surface 310 and a top surface 320 protruding outwards relative to the bottom surface 310, the bottom surface 310 of the lens is attached to the light emitting side of the first light-emitting sub-pixel device 110, wherein the front projection of the light-gathering member 300 on the first light-emitting sub-pixel device 110 covers the first light-emitting sub-pixel device 110, and the front projection of the light-gathering member 300 on the first light-emitting sub-pixel device 110 does not overlap with the second light-emitting sub-pixel device 120. Illustratively, the top of the first light emitting sub-pixel device 110 may further include an encapsulation layer 400, and the bottom surface 310 of the lens is attached to a side of the encapsulation layer 400 away from the first light emitting sub-pixel device 110, as shown in fig. 8, when the first light emitting sub-pixel device 110 is turned on, the light emitted by the first light emitting sub-pixel device 110 is reduced after passing through the lens, so as to achieve the purpose of reducing viewing angle peeping prevention.

The embodiment also provides electronic equipment, which comprises the display screen described in the previous embodiment, wherein the electronic equipment adopting the display screen can switch between the peep-proof mode and the normal display mode when a user needs to be in, so that the privacy of the user is protected, and the market competitiveness of the electronic equipment is improved.

In summary, the display screen and the electronic device provided in the embodiments of the present application include a light emitting sub-pixel and a pixel driving circuit for driving the light emitting sub-pixel. The light emitting sub-pixel includes at least one first light emitting sub-pixel device and at least one second light emitting sub-pixel device. The pixel driving circuit comprises a plurality of independently controlled pixel driving branches, and each pixel driving branch drives one light-emitting sub-pixel device. The display screen further comprises a light condensing piece, wherein the light condensing piece is arranged on the light emitting side of the first light emitting sub-pixel device and used for reducing the light emitting angle of the first light emitting sub-pixel device. By the design, when the first luminous sub-pixel device in the luminous sub-pixel is controlled to work, the content displayed by the display screen can be visible in a narrower visible range, so that the purpose of active peeping prevention is achieved.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. A display screen comprising light emitting sub-pixels and pixel driving circuitry for driving the light emitting sub-pixels;

the light emitting sub-pixel comprises at least one first light emitting sub-pixel device and at least one second light emitting sub-pixel device;

the pixel driving circuit comprises a plurality of independently controlled pixel driving branches, the plurality of pixel driving branches comprise a first pixel driving branch and a second pixel driving branch, the first pixel driving branch drives the first luminous sub-pixel device, and the second pixel driving branch drives the second luminous sub-pixel device;

the display screen further comprises a light condensing piece, wherein the light condensing piece is arranged on the light emitting side of the first light emitting sub-pixel device and used for reducing the light emitting angle of the first light emitting sub-pixel device.

2. A display screen as recited in claim 1, wherein the pixel drive leg is connected to an anode of the light emitting sub-pixel device;

the anodes of different light-emitting sub-pixel devices in the light-emitting sub-pixels are mutually insulated.

3. The display screen of claim 1, wherein the first pixel drive leg and the second pixel drive leg each comprise a first transistor, a second transistor, and a third transistor in series in sequence;

in the same pixel driving branch, the output end of the first transistor is connected with the input end of the second transistor, and the output end of the second transistor is connected with the input end of the third transistor;

the second transistor is a driving transistor, and the first transistor and the third transistor are switching transistors.

4. A display screen as recited in claim 3, wherein,

in the same pixel driving circuit, the input ends of the first transistors of different pixel driving branches are connected with the same power supply signal, the input ends of the second transistors of different pixel driving branches are connected with the same data signal, and the control ends of the second transistors of different pixel driving branches are connected with the same control signal;

the control end of the first transistor and the control end of the third transistor in the first pixel driving branch are connected with a first light-emitting control signal, and the control end of the first transistor and the control end of the third transistor in the second pixel driving branch are connected with a second light-emitting control signal;

the output end of the third transistor in the first pixel driving branch is connected with the anode of the first light-emitting sub-pixel device, and the output end of the third transistor in the second pixel driving branch is connected with the anode of the second light-emitting sub-pixel device.

5. The display screen of claim 4, wherein the pixel drive circuit further comprises a storage capacitance common to the first pixel drive leg and the second pixel drive leg;

the input end of the first transistor in the first pixel driving branch circuit and the input end of the first transistor in the second pixel driving branch circuit are both connected with the first electrode of the storage capacitor, and the control end of the second transistor in the first pixel driving branch circuit and the control end of the second transistor in the second pixel driving branch circuit are both connected with the second electrode of the storage capacitor;

preferably, the pixel driving circuit further includes a transistor common to the first pixel driving branch and the second pixel driving branch, the common transistor including at least one of a data writing transistor, an initializing transistor, a threshold voltage compensating transistor, and a reset transistor, and the common transistor being connected at the same position in the first pixel driving branch and the second pixel driving branch.

6. A display screen as claimed in any one of claims 1 to 5 wherein the anodes of different ones of the light-emitting sub-pixel devices are distributed adjacently and/or in a surrounding manner.

7. A display screen as recited in claim 6, wherein when anodes of different ones of the light-emitting sub-pixel devices are adjacently disposed, anodes of any one of the light-emitting sub-pixel devices are positioned on one side of anodes of another one of the light-emitting sub-pixel devices;

preferably, anodes of the different light-emitting sub-pixel devices are distributed adjacently left and right or adjacently up and down.

8. A display screen as recited in claim 6, wherein when anodes of different ones of the light-emitting sub-pixel devices are distributed in a surrounding manner, at least one anode of one light-emitting sub-pixel device at least partially surrounds another anode of the light-emitting sub-pixel device;

preferably, anodes of the different light-emitting sub-pixel devices are shaped like a Chinese character 'hui'.

9. A display screen as recited in any one of claims 1-5, wherein the light gathering member includes a lens for reducing an emission angle of the first light emitting sub-pixel device;

the lens comprises a planar bottom surface and a top surface protruding outwards relative to the bottom surface, and the bottom surface of the lens is attached to the light emitting side of the first light emitting sub-pixel device.

10. An electronic device comprising the display screen of any one of claims 1-9.

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