CN115113422B

CN115113422B - Display module, display device and control method thereof

Info

Publication number: CN115113422B
Application number: CN202110302945.9A
Authority: CN
Inventors: 王欣怡; 许哲睿
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2023-07-25
Anticipated expiration: 2041-03-22
Also published as: CN115113422A

Abstract

The application discloses a display module, a display device and a control method thereof, and belongs to the technical field of display. The display module includes: and a liquid crystal display panel and a driving unit. A plurality of first sub-pixels are arranged in a light hole area in the display module, the driving unit can control the TFTs of the plurality of first sub-pixels so as to form at least one of a light transmission area and a non-light transmission area in the light hole area, and the areas of the light transmission area and the non-light transmission area formed in the light hole area can be adjusted, so that the light quantity of ambient light entering a light receiving surface of a camera through the light transmission area can be controlled. Therefore, the light hole area in the display module has a light transmission function, also has a function of adjusting the light quantity of the ambient light emitted into the light receiving surface of the camera, and effectively enriches the function of the liquid crystal display screen.

Description

Display module, display device and control method thereof

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display module, a display device, and a control method thereof.

Background

The full-screen display device has a relatively high screen occupation (generally 80% or even 90% or more), so that the size of the display screen can be increased without increasing the overall size of the display device.

Typically, the front side of a full screen display (i.e., the side coplanar with the display surface) typically requires a camera to be positioned. In order not to affect the screen ratio of the full-screen display device, a light-passing hole can be arranged in the display screen of the full-screen display device, and the area where the light-passing hole is located is required to be located in the display area of the display screen. The light receiving surface of the camera faces the light passing hole, so that ambient light can penetrate through the light passing hole and then enter the light receiving surface of the camera, and the camera can work normally. Among them, the display screen provided with the light passing holes is also commonly referred to as a hole digging screen.

However, the light-transmitting hole in the current display screen has only a light-transmitting function.

Disclosure of Invention

The embodiment of the application provides a display module, a display device and a control method thereof. The technical scheme is as follows:

in one aspect, a display module is provided, the display module has a light hole area, and the light hole area is used for corresponding to a camera; the display module includes:

a liquid crystal display panel, the liquid crystal display panel comprising: a plurality of first sub-pixels located within the light aperture region, each of the first sub-pixels comprising: a thin film transistor TFT and a pixel electrode;

a driving unit electrically connected to the TFT in each of the first sub-pixels, the driving unit configured to: and controlling the TFTs in the first sub-pixels to load a first voltage to at least part of the pixel electrodes of the first sub-pixels, and/or to load a second voltage to at least part of the pixel electrodes of the first sub-pixels, so that the first sub-pixels where the pixel electrodes loaded with the first voltage are positioned transmit ambient light, and the first sub-pixels where the pixel electrodes loaded with the second voltage are positioned block the ambient light, so that at least one of a light transmitting area and a non-light transmitting area is formed in the light hole area.

Optionally, the driving unit is configured to: and when the camera is in a shooting state, controlling the TFTs in the first sub-pixels to form an annular non-light-transmitting area in the light hole area and the light-transmitting area in the non-light-transmitting area.

Optionally, the outer boundary shape of the non-light-transmitting area is circular, the inner boundary shape of the non-light-transmitting area is circular or regular polygon, and the shape of the light-transmitting area is the same as the shape of the light-transmitting area.

Optionally, the driving unit is configured to: and controlling the TFTs in the plurality of first sub-pixels based on the aperture parameters when the camera shoots so that the area of the light transmission area is equal to the light transmission area corresponding to the aperture parameters.

Optionally, the driving unit is configured to: and when the camera is in a shooting prohibition state, controlling the TFTs in the first sub-pixels so as to form the non-light-transmitting area in the light hole area.

Optionally, the display module further has: the display area is positioned outside the unthreaded hole area, and the liquid crystal display panel further comprises: a plurality of second sub-pixels located within the display area, the second sub-pixels comprising: the driving unit is further electrically connected with the TFTs in each of the second sub-pixels.

Optionally, the pixel density of the plurality of first sub-pixels is less than the pixel density of the plurality of second sub-pixels.

Optionally, the light hole area and the display area are provided with a plurality of sub-pixel areas, a first sub-pixel is arranged in one part of the sub-pixel areas in the light hole area, and a first sub-pixel is not arranged in the other part of the sub-pixel areas; and second sub-pixels are arranged in the plurality of sub-pixel areas in the display area.

In another aspect, there is provided a display apparatus including: the camera is positioned on one side opposite to the display surface of the display module, and the orthographic projection of the light receiving surface of the camera on the display module is positioned in the light hole area.

In still another aspect, there is provided a control method of a display device, the method being applied to the display device described above, the method including:

the TFTs in the plurality of first sub-pixels are controlled by the driving unit to form at least one of a light-transmitting region and a light-non-transmitting region within the light hole region.

Optionally, controlling, by the driving unit, the TFTs in the plurality of first sub-pixels to form at least one of a light-transmitting region and a non-light-transmitting region in the light hole region, including:

when the camera is in a shooting state, receiving aperture parameters when the camera shoots;

based on the aperture parameters, the TFTs in the first sub-pixels are controlled by the driving unit to form an annular non-light-transmitting area and a light-transmitting area surrounded by the inner ring of the non-light-transmitting area in the light hole area, and the area of the light-transmitting area is equal to the light-transmitting area corresponding to the aperture parameters.

and when the camera is in a shooting prohibition state, controlling the TFTs in the first sub-pixels through the driving unit so as to form the non-light-transmitting area in the light hole area.

The beneficial effects that technical scheme that this application embodiment provided include at least:

the display module includes: and a liquid crystal display panel and a driving unit. A plurality of first sub-pixels are arranged in a light hole area in the display module, the driving unit can control the TFTs of the plurality of first sub-pixels so as to form at least one of a light transmission area and a non-light transmission area in the light hole area, and the areas of the light transmission area and the non-light transmission area formed in the light hole area can be adjusted, so that the light quantity of ambient light entering a light receiving surface of a camera through the light transmission area can be controlled. Therefore, the light hole area in the display module has a light transmission function, also has a function of adjusting the light quantity of the ambient light emitted into the light receiving surface of the camera, and effectively enriches the function of the liquid crystal display screen. In addition, as the light hole area in the display module is equivalent to the aperture of the camera, the aperture component is not required to be integrated in the camera alone, so that the manufacturing cost of the camera can be reduced, and the manufacturing cost of the display device integrated with the display module and the camera is further reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a film structure of a display screen in a full-screen display device commonly used at present;

fig. 2 is a schematic diagram of a film structure of a display module according to an embodiment of the present application;

fig. 3 is a schematic diagram of a film structure of a liquid crystal display panel according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a film structure of a first sub-pixel according to an embodiment of the present application;

FIG. 5 is an effect diagram of a light hole area according to an embodiment of the present application;

FIG. 6 is a diagram showing the effect of forming light-transmitting and non-light-transmitting regions of different sizes in a light hole region according to an embodiment of the present application;

fig. 7 is a schematic diagram of a film structure of a second sub-pixel according to an embodiment of the present application;

FIG. 8 is an enlarged top view of a portion of the display module shown in FIG. 2 in the light aperture area;

FIG. 9 is a partially enlarged top view of the display module shown in FIG. 2 in a display area;

fig. 10 is an effect diagram of a connection between a driving unit and a liquid crystal display panel according to an embodiment of the present application;

fig. 11 is a schematic diagram of a film structure of an array substrate in the liquid crystal display panel shown in fig. 3;

fig. 12 is a schematic diagram of a film layer structure of a color film substrate in the liquid crystal display panel shown in fig. 3;

fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present application;

fig. 14 is a schematic view of a film structure at A-A' of the display device shown in fig. 13.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic diagram of a film structure of a display screen in a full-screen display device. The display screen has a light aperture region 00a and a display region 00b located outside the light aperture region 00a. The display screen may include: a liquid crystal display panel 01 and a backlight 02.

The liquid crystal display panel 01 includes a plurality of film structures for constituting a plurality of sub-pixels 011, the plurality of sub-pixels 011 being located in the display area 00b, and a picture being displayed in the display area 00b by controlling the plurality of sub-pixels 011. The sub-pixels are not disposed in the light hole region 00a, and a portion of the liquid crystal display panel where the plurality of film structures are located in the light hole region 00a is a transparent portion.

The backlight 02 has a light-passing hole 021 located in the light-passing hole region 00a. Therefore, when the camera in the full-screen display device is positioned on one side of the backlight 02 and the liquid crystal display panel 01 and the light receiving surface of the camera faces the light passing hole 021, ambient light can penetrate through the light hole area 00a of the display screen and then enter the light receiving surface of the camera, so that the camera can work normally.

However, since the portion of the liquid crystal display panel 01 located in the aperture region 00a is a transparent portion in which no sub-pixel is provided, the aperture region 00a of the display panel has only a light transmitting function, and the function of the liquid crystal display panel 01 is relatively single.

Referring to fig. 2, fig. 2 is a schematic diagram of a film structure of a display module according to an embodiment of the disclosure. The display module 000 has a light hole area 000a. The light hole area 000a is used for corresponding to a camera, and after the display module 000 and the camera are assembled to obtain a display device, ambient light can be emitted into the light receiving surface of the camera through the light hole area 000a in the display module 000, so that the camera can acquire images. Wherein, the display module 000 may include: a liquid crystal display panel 100 and a driving unit 200.

The liquid crystal display panel 100 may include: a plurality of first sub-pixels 100a located within the light aperture region 000a. In this application, the display module 000 further has a display area 000b located outside the light hole area 000a. The liquid crystal display panel 100 may further include: a plurality of second sub-pixels 100b located within the display area 000b. Wherein each of the first sub-pixels 100a and each of the second sub-pixels 100b may include: a thin film transistor (english: thin Film Transistor; abbreviated as TFT) and a pixel electrode (not shown in fig. 2). The driving unit 200 may be electrically connected to the TFT in each first sub-pixel 100a, and the driving unit 200 may also be electrically connected to the TFT in each second sub-pixel 100b.

By way of example, the TFTs within the first sub-pixel 100a and the second sub-pixel 100b may include: an active layer, first and second poles overlapping the active layer, and a gate electrode insulated from the active layer. Wherein the pixel electrode may be electrically connected to a first electrode in the TFT. The second pole and the gate electrode in the TFT may be electrically connected to the driving unit 200. In this way, the driving unit 200 controls the active layer in the TFT to be turned on or off by applying different voltages to the gate electrode. After the active layer in the TFT is turned on, the driving unit 200 applies a voltage to the pixel electrode through the second electrode, the active layer, and the first electrode. The first pole may be one of the source and the drain, and the second pole may be the other of the source and the drain.

In the present embodiment, the driving unit 200 is configured to: the TFTs in the plurality of first sub-pixels 100a are controlled to apply a first voltage to the pixel electrodes of at least part of the first sub-pixels 100a and/or to apply a second voltage to the pixel electrodes of at least part of the first sub-pixels 100a such that the first sub-pixels 100a where the pixel electrodes of the first voltage are applied transmit ambient light and the first sub-pixels 100a where the pixel electrodes of the second voltage are applied block the ambient light to form at least one of a light transmitting region and a non-light transmitting region within the light hole region 000a. The light transmitting area is an area where a portion of the first sub-pixel 100a capable of transmitting ambient light is located, and the light shielding area is an area where a portion of the first sub-pixel 100a capable of shielding ambient light is located.

As shown in fig. 3, fig. 3 is a schematic diagram of a film structure of a liquid crystal display panel according to an embodiment of the present application. The liquid crystal display panel 100 may include: the color film comprises an array substrate 101, a color film substrate 102, a liquid crystal layer 103, a first polaroid 104 and a second polaroid 105, wherein the array substrate 101 and the color film substrate 102 are oppositely arranged, the liquid crystal layer 103 is arranged between the array substrate 101 and the color film substrate 102, the first polaroid 104 is arranged on one side of the array substrate 101 away from the color film substrate 102, and the second polaroid 105 is arranged on one side of the color film substrate 102 away from the array substrate 101.

Wherein the TFTs and the pixel electrodes in the first sub-pixel 100a and the second sub-pixel 100b are located in the array substrate 101. The polarization direction of the first polarizer 104 is perpendicular to the polarization direction of the second polarizer 105, and both the first polarizer 104 and the second polarizer 105 need to cover the light hole area 000a and the display area 000b. Note that the liquid crystal display panel 100 may further include: the sealing frame 106 is positioned between the array substrate 101 and the color film substrate 102, and can seal the liquid crystal in the liquid crystal layer 103 through the sealing frame 106, so that the liquid crystal is prevented from flowing out from between the array substrate 101 and the color film substrate 102.

Fig. 4 is a schematic diagram of a film structure of a first sub-pixel according to an embodiment of the present application, as shown in fig. 4. When the liquid crystal display panel 100 is a TN-type display panel, the first sub-pixel 100a may include not only: the TFT 1011 and the pixel electrode 1012 positioned in the array substrate 101, the first subpixel 100a may further include: a common electrode 1021 in the color film substrate 102, and a liquid crystal between the pixel electrode 1012 and the common electrode 1021.

For the first sub-pixel 100a, the voltage applied to the common electrode 1021 in the first sub-pixel 100a is a constant voltage, for example, 0 volt is applied to the common electrode 1021. It is assumed that, after the driving unit controls the active layer of the TFT 1011 in the first sub-pixel 100a to be turned on, the first voltage applied to the pixel electrode 1012 in the first sub-pixel 100a by the driving unit 200 is different from the voltage applied to the common electrode 1021, and the second voltage applied to the pixel electrode 1012 in the first sub-pixel 100a by the driving unit 200 is the same as the voltage applied to the common electrode 1021.

Then, in the first sub-pixel 100a, since the ambient light is transmitted through the second polarizer 105, the ambient light may be converted into linear polarization having the same polarization direction as the second polarizer 105, and the linear polarization may enter the liquid crystal layer 103. Therefore, when the pixel electrode 1012 is loaded with the first voltage, a voltage difference is formed between the pixel electrode 1012 and the common electrode 1021, the liquid crystal is deflected under the action of the voltage difference, and the deflected liquid crystal adjusts the polarization direction of the polarized light entering the liquid crystal layer 103 into the polarization direction of the first polarizer 104, so that the polarized light with the adjusted polarization direction exits from the second polarizer 104, that is, the first sub-pixel 100a of the pixel electrode 1011 loaded with the first voltage can transmit the ambient light; when the pixel electrode 1012 is charged with the second voltage, a voltage difference is not formed between the pixel electrode 1012 and the common electrode 1021, the liquid crystal is not deflected, the undeflected liquid crystal cannot adjust the polarization direction of the polarized light incident into the liquid crystal layer 103, and the polarization direction of the polarized light is perpendicular to the polarization direction of the second polarizer 104, and the second polarizer 104 can block the polarized light, that is, the first sub-pixel 100a of the pixel electrode 1011 charged with the second voltage can block the ambient light.

In the present application, by controlling the TFTs in the plurality of first sub-pixels 100a by the driving unit 200, at least one of the light transmitting region and the non-light transmitting region can be formed in the light hole region 000a, and the areas of the light transmitting region and the non-light transmitting region can be controlled, so that the light quantity of the ambient light entering the light receiving surface of the camera through the light transmitting region can be controlled. Thus, the light hole area 000a in the display module 000 not only has a light transmission function, but also has a function of adjusting the light transmission amount of the ambient light entering the light receiving surface of the camera, and the function of the display module is effectively enriched.

In the embodiment of the present application, as shown in fig. 5, fig. 5 is an effect diagram of a light hole area provided in the embodiment of the present application. The driving unit 200 in the display module 000 is configured to: when the camera 200 is in a photographing state, the TFTs of the plurality of first sub-pixels 100a in the light hole region 000a are controlled to form a ring-shaped opaque region a1 in the light hole region 000a and a light transmitting region a2 in the ring-shaped opaque region a 1. Thus, the pupil area 000a in the display module 000 is similar to the aperture of a camera. In this case, it is not necessary to separately integrate the diaphragm assembly in the camera, and the manufacturing cost of the display device in which the display module 000 and the camera are integrated can be reduced.

The outer boundary of the non-transparent region a1 is circular, the shape of the transparent region a2 is the same as the inner boundary of the non-transparent region a1, and the outer boundary of the transparent region a2 coincides with the inner boundary of the non-transparent region a 1. It should be noted that, fig. 5 is schematically illustrated by taking the shape of the inner boundary of the non-transparent area a1 formed in the light hole area 000a as a circle, and in other alternative implementations, the shape of the inner boundary of the non-transparent area a1 may be a regular polygon, for example, the shape of the inner boundary of the non-transparent area a1 is a regular octagon, which is not limited in the embodiments of the present application.

In the present application, the driving unit 200 in the display module 000 is configured to: when the camera is in a photographing state, the TFTs of the plurality of first sub-pixels 100a of the light hole area 000a are controlled based on the aperture parameters at the time of photographing by the camera so that the area of the light transmission area formed in the light hole area 000a is equal to the light transmission area corresponding to the aperture parameters.

For example, the display device integrated with the display module 000 may further include: and a central processing unit electrically connected with the camera and the driving unit 200, respectively. The central processing unit can acquire the aperture parameters required by the camera shooting in the process of the camera shooting, and determine the area of the light-transmitting area and the area of the non-light-transmitting area required to be formed in the light hole area 000a based on the aperture parameters. The area of the light-transmitting area is the light-transmitting area corresponding to the aperture parameter. In this way, the central processor can distinguish among the plurality of first sub-pixels 100 a: a first sub-pixel requiring light transmission and a first sub-pixel requiring light shielding. Then, the cpu can control the TFTs of the plurality of first sub-pixels 100a through the driving chip unit 200, so that the first sub-pixels requiring light transmission can transmit ambient light, and the first sub-pixels requiring light shielding can shield ambient light, so that the light-transmitting area and the non-light-transmitting area formed in the light hole area 000a can be matched with the aperture parameters.

For example, as shown in fig. 6, fig. 6 is an effect diagram of forming light-transmitting areas and non-light-transmitting areas with different sizes in a light hole area according to an embodiment of the present application. When the aperture parameter obtained during photographing by the camera is F/1.8, the effect diagram of the light-transmitting area and the light-non-transmitting area formed in the pupil area 000a is referred to fig. 6 (1). When the aperture parameter obtained during photographing by the camera is F/5.6, the effect diagram of the light-transmitting area and the non-light-transmitting area formed in the pupil area 000a is referred to fig. 6 (2). When the aperture parameter obtained during photographing by the camera is F/16, the effect diagram of the light-transmitting area and the non-light-transmitting area formed in the pupil area 000a is referred to fig. 6 (3).

In the embodiment of the present application, the driving unit 200 in the display module 000 is configured to: when the camera is in the photographing disabled state, the TFTs of the plurality of first sub-pixels 100a in the light hole area 000a are controlled to form a non-light transmitting area in the light hole area 000a. In this way, even when the camera in the display device integrated with the display module 000 is maliciously enabled while the camera is in the photographing disabled state, for example, the camera is maliciously enabled by an application program installed on the display device. However, after the TFTs of the first sub-pixels 100a in the light hole area 000a are controlled to form a non-light-transmitting area in the light hole area 000a, ambient light cannot enter the light-receiving surface of the camera through the light hole 100a, and the camera still cannot acquire images, so that the problem of user privacy leakage after the camera is maliciously started is avoided.

Alternatively, the prohibited photographing state may satisfy at least one of: the display device runs a designated application program; the current moment is in a sleep period; the current position is in the photographing prohibited area. For this purpose, the embodiments of the present application are schematically illustrated in the following three cases:

in the first case, when the display device integrated with the display module 000 runs a specified application, the camera in the display device is in a photographing prohibited state. For example, the specified application may be a user-defined blacklist program, or a blacklist program defined by the server when the server upgrades the system of the display device. The central processing unit in the display device may detect whether the currently running application is a designated application, and upon detecting that the currently running application is a designated application, the central processing unit may control the TFTs of the plurality of first sub-pixels 100a through the driving unit 200 in the display module 000 to form a non-light transmitting area within the light hole area 000a. Therefore, even if the camera is maliciously started by the appointed application program, the camera still cannot acquire images, and the problem of user privacy disclosure after the camera is maliciously started is avoided.

In the second case, when the current time is in the sleep period, the camera in the display device integrated with the display module 000 is in the photographing prohibited state. The sleep period may be a period customized by a user, for example, the sleep period may be 0:00-6:00. The central processing unit in the display device may detect whether the current time is in the sleep period, and upon detecting that the current time is in the sleep period, the central processing unit may control the plurality of first sub-pixels 100a through the driving unit 200 in the display module 000 to form the non-light-transmitting region within the light hole region 000a. Therefore, even if the camera is maliciously started by other people, the camera still cannot acquire images, and the problem of user privacy disclosure after the camera is maliciously started is avoided.

In the third case, when the current position is in the photographing prohibited area, the camera in the display device integrated with the display module 000 is in the photographing prohibited state. The prohibited photographing region may be, for example, a movie theater or a privacy agency, or the like. The central processing unit in the display device may detect whether the current position is in the photographing prohibited area, and upon detecting that the current position is in the photographing prohibited area, the central processing unit may control the plurality of first sub-pixels 100a through the driving unit 200 in the display module 000 to form a non-light-transmitting area within the light hole area 000a. Therefore, even if a user maliciously starts the camera, the camera still cannot acquire images, and the problem that a shooting-forbidden area is illegally shot after the camera is maliciously started is avoided.

It should be noted that, in the present application, when the aperture structure is not required to be formed in the light hole area 000a of the display module 000, the driving unit 200 in the driving unit 200 may control the plurality of first sub-pixels 100a to form the light transmitting area only in the light hole area 000a.

In the embodiment of the present application, the driving unit 200 in the display module 000 can also control the TFTs of the plurality of second sub-pixels 100b in the display area 000b, so that different voltages are applied to the pixel electrodes of the plurality of second sub-pixels 100b to display a picture in the display area 000b. Among them, one surface of the liquid crystal display panel 100 on which a screen is displayed is generally referred to as a display surface.

It should be noted that, the second sub-pixel 100b in the display area 000b of the display module 000 may emit light outwards, so that the display module 000 can display a picture. The first sub-pixel 100b located in the light hole area 000a in the display module 000 does not emit light outwards, so that ambient light can pass through the light-transmitting area formed by a part of the first sub-pixel 100a in the light hole area 000a, and the camera corresponding to the light hole area 000a can work normally.

As illustrated in fig. 2, the display module 000 may further include: and a backlight 300, wherein the backlight 300 is positioned at a side opposite to the display surface of the liquid crystal display panel 100. The backlight 300 has a light passing hole 301 located in the light hole region 000a. The light passing hole 301 is used to correspond to a camera. In the present application, the portion of the backlight 300 located in the display area 000b is used to provide a light source for the liquid crystal display panel 101 located in the display area 000b, and the light emitted by the backlight 300 can pass through the plurality of second sub-pixels 100b and then exit, so that the display area 000b in the display module 000 can display a picture; the light-passing hole 301 in the backlight 300 may be a through hole, and the light-passing hole 301 in the backlight 300 does not emit light outwards, so that ambient light can sequentially pass through the first sub-pixel 100a and the light-passing hole 301, so that the camera corresponding to the light-passing hole area 000a can work normally. Note that, in the embodiment of the present application, the backlight 300 may be a side-in type backlight or a direct type backlight. The embodiment of the present application is not particularly limited thereto.

In this embodiment, as shown in fig. 7, fig. 7 is a schematic diagram of a film structure of a second sub-pixel according to the embodiment of the present application. When the liquid crystal display panel 100 is a TN-type display panel, the second sub-pixel 100b may include not only: a TFT 1011 and a pixel electrode 1012 in the array substrate 101, a common electrode 1021 in the color film substrate 102, and a liquid crystal between the pixel electrode 1012 and the common electrode 1021. The second subpixel 100b may further include: color filter blocks 1022 are located in the color film substrate. In this application, the color filter blocks 1022 located in the plurality of second sub-pixels 100b in the display area 000b may include: red color filter block, green color filter block and blue color filter block. In this way, the color filter block located in the display area 000b can change the color of the light emitted from the plurality of second sub-pixels 100b, so that a color picture can be displayed in the display area 000b. And the color filter block is not arranged in the light hole area 000a, so that the phenomenon that the shooting effect of the camera is affected due to the interference of the color filter block when ambient light is injected from the light hole area 000a is avoided.

For the second sub-pixel 100b, the voltage applied to the common electrode 1021 in the second sub-pixel 100b is a constant voltage. When the driving unit 200 controls the active layer of the TFT 1011 in the second sub-pixel 100b to be turned on, different voltages can be applied to the pixel electrode 1021 of the second sub-pixel 100b by the driving unit 200 so that different voltage differences are formed between the pixel electrode 1012 and the common electrode 1021, and the liquid crystal located between the pixel electrode 1012 and the common electrode 1021 can be deflected by different angles by the different voltage differences. In this way, the light output rate of the backlight 300 after the light transmitted through the second sub-pixel 100b is different. That is, when the pixel electrode 1012 in the second sub-pixel 100b is charged with different voltages, the light transmitted through the second sub-pixel 100b has different gray scales. In this case, if the pixel electrode 1012 in each second sub-pixel 100b is loaded with a corresponding voltage, the light transmitted through each second sub-pixel 100b has different gray scales, which can form a complete picture, so that the picture can be displayed in the display area 000b of the display module 000.

In the embodiment of the present application, in the display module 000, the pixel density of the plurality of first sub-pixels 100a located in the light hole area 000a is smaller than the pixel density of the plurality of second sub-pixels 100b located in the display area 000b. That is, the number of Pixels Per Inch (English: pixels Per Inch; abbreviated: PPI) of the first sub-pixel in the light hole region 000a is smaller than the PPI of the second pixel 100d in the display region 000b.

Thus, the pixel density of the second sub-pixel 100b in the display area 000b is higher, so that the display effect of the display module 000 can be ensured to be better. The pixel density of the first sub-pixel 100a in the light hole area 000a is lower, so that the light hole area 000a is guaranteed to have higher transmittance to ambient light, and further, the camera in the display device integrated with the display module 000 can shoot images with higher quality.

In this application, the light hole region 000a and the display region 000b of the display module 000 each have a plurality of sub-pixel regions therein. As illustrated in fig. 8 and 9, fig. 8 is a partially enlarged top view of the display module shown in fig. 2 in the light hole area, and fig. 9 is a partially enlarged top view of the display module shown in fig. 2 in the display area. The array substrate 101 in the display module 000 has a plurality of data lines 1013 and a plurality of gate lines 1014, and the extending direction of the data lines 1013 intersects with the extending direction of the gate lines 1014, for example, the extending direction of the data lines 1013 is perpendicular to the extending direction of the gate lines 1014. Of the plurality of data lines 1013 and the plurality of gate lines 1014, any two adjacent data lines 1013 and any two adjacent gate lines 1014 can enclose one sub-pixel region. The data lines 1013 and the gate lines 1014 may be distributed not only in the display region 000b but also in the light hole region 000a. Thus, the arrangement density of the sub-pixel regions within the light hole region 000a is the same as the arrangement density of the sub-pixel regions within the display region 000b.

As shown in fig. 8, in the light hole area 000a of the display module 000, a first sub-pixel 100a is disposed in a part of the sub-pixel area, and the first sub-pixel 100a is not disposed in the other part of the sub-pixel area. As shown in fig. 9, the second sub-pixels 100b are disposed in each of the plurality of sub-pixel regions within the display area 000b of the display module 000. In this way, the pixel density of the plurality of first sub-pixels 100a located in the light hole region 000a can be ensured to be smaller than the pixel density of the plurality of second sub-pixels 100b located in the display region 000b.

In this application, in each of the first sub-pixels 100a and each of the second sub-pixels 100b, a first electrode of the TFT 1011 is electrically connected to the pixel electrode 1012, a second electrode of the TFT 1012 may be electrically connected to the data line 1013, and a gate electrode of the TFT 1011 may be electrically connected to the gate line 1014, as shown in fig. 4, 7, 8, and 9. The driving unit 200 may be electrically connected to the plurality of TFTs 1011 in the liquid crystal display panel 100 through the plurality of data lines 1013 and the plurality of gate lines 1014. For example, as shown in fig. 10, fig. 10 is an effect diagram of connection between a driving unit and a liquid crystal display panel according to an embodiment of the present application. The driving unit 200 may include: a timing controller 201, a gate driving circuit 202, and a source driving circuit 203. The gate driving circuit 202 may be electrically connected to a plurality of gate lines for scanning each row of sub-pixels in the liquid crystal display panel 100 line by line; the source driving circuit 203 may be electrically connected to a plurality of data lines for supplying data signals to each column of sub-pixels in the liquid crystal display panel 101; the timing controller 201 may be connected to the gate driving circuit 202 and the source driving circuit 203, respectively, for controlling signals output from the gate driving circuit 202 and the source driving circuit 203.

In connection with the above embodiments, the following embodiments will schematically explain the structures of the array substrate 101 and the color film substrate 102 in the liquid crystal panel 100:

as shown in fig. 11, fig. 11 is a schematic diagram of a film structure of an array substrate in the liquid crystal display panel shown in fig. 3. The array substrate 101 may include: a first substrate 1015, a first conductive layer, a first insulating layer 1016, an active layer pattern, a second conductive layer, a second insulating layer 1017, and a third conductive layer stacked on the first substrate 1015. Wherein the first conductive layer may include: a gate electrode in each TFT 1011 and a gate line connected to the gate electrode; the active layer pattern may include: an active layer in each TFT 1011; the second conductive layer may include: first and second poles in the respective TFTs 1011, and a data line electrically connected to the second pole; the third conductive layer may include: each pixel electrode 1012. It should be noted that, the material of the third conductive layer may be a transparent conductive material, and the materials of the first conductive layer and the second conductive layer are both metal conductive materials.

As shown in fig. 12, fig. 12 is a schematic diagram of a film layer structure of a color film substrate in the liquid crystal display panel shown in fig. 3. The color film substrate may include: a second substrate 1023, which is stacked on the second substrate 1023: a black matrix 1024, a color filter layer, a fourth insulating layer 1025, and a common electrode 1021. The common electrode may be a planar electrode. The color filter layer comprises: a color filter block 1022 is located in each second subpixel 100b. And the color filter layer is distributed only in the display area 000b, and the color filter layer is not disposed in the light hole area 000a. The orthographic projection of the black matrix 1024 on the array substrate 101 covers a plurality of data lines and a plurality of gate lines. Since the data lines and the gate lines are generally made of a metal material, their reflectivity is high. Therefore, the black matrix 1024 can block the ambient light, so that the problem that the display effect of the display module 000 is poor after the data line and the grid line reflect the ambient light can be avoided.

To sum up, the display module provided in the embodiment of the present application includes: and a liquid crystal display panel and a driving unit. A plurality of first sub-pixels are arranged in a light hole area in the display module, the driving unit can control the TFTs of the plurality of first sub-pixels so as to form at least one of a light transmission area and a non-light transmission area in the light hole area, and the areas of the light transmission area and the non-light transmission area formed in the light hole area can be adjusted, so that the light quantity of ambient light entering a light receiving surface of a camera through the light transmission area can be controlled. Therefore, the light hole area in the display module has a light transmission function, also has a function of adjusting the light quantity of the ambient light emitted into the light receiving surface of the camera, and effectively enriches the function of the liquid crystal display screen. In addition, as the light hole area in the display module is equivalent to the aperture of the camera, the aperture component is not required to be integrated in the camera alone, so that the manufacturing cost of the camera can be reduced, and the manufacturing cost of the display device integrated with the display module and the camera is further reduced.

The embodiment of the application also provides a display device, as shown in fig. 13 and 14, fig. 13 is a schematic structural diagram of the display device provided in the embodiment of the application, and fig. 14 is a schematic structural diagram of a film layer at A-A' of the display device shown in fig. 13. The display device may include: display module 000 and camera 001. The display module 000 may be the display module of the above embodiment, for example, the display module 000 may be the display module shown in fig. 2. The camera 001 is located at a side opposite to the display surface of the display module 000, and the orthographic projection of the light receiving surface of the camera 001 on the display module 000 is located in the light hole area 000a. The optical axis of the camera 001 may coincide with the central axis of the light passing hole 301 of the backlight 300 of the display module 000. It should be noted that, fig. 13 is a schematic illustration taking a display device as an example of a mobile phone, and in other alternative implementations, the display device may also be any product or component with a display function, such as a display, a notebook computer, a tablet computer, a smart tv, or a wearable device.

The embodiment of the application also provides a control method of a display device, which is applied to the display device shown in the above embodiment, for example, the display device shown in fig. 13. The control method of the display device may include:

the TFTs of the plurality of first sub-pixels located in the light hole region are controlled by the driving unit to form at least one of a light transmitting region and a non-light transmitting region in the light hole region.

Optionally, controlling the TFTs of the plurality of first sub-pixels located in the light hole region by the driving unit to form at least one of a light transmitting region and a non-light transmitting region in the light hole region may include:

when the camera is in a shooting state, receiving aperture parameters when the camera shoots; based on the aperture parameters, the TFTs of the first sub-pixels positioned in the aperture area are controlled by the driving unit so as to form a ring-shaped non-light-transmitting area and a light-transmitting area surrounded by the inner ring of the non-light-transmitting area in the aperture area, and the area of the light-transmitting area is equal to the light-transmitting area corresponding to the aperture parameters.

when the camera is in a shooting prohibition state, the TFTs of the plurality of first sub-pixels located in the light hole area are controlled by the driving unit to form a non-light-transmitting area in the light hole area.

It will be clear to those skilled in the art that, for convenience and brevity of description, the specific principles of the control method of the display device described above may refer to the corresponding content in the embodiment of the structure of the display module, which is not described herein again.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless explicitly defined otherwise.

The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the invention.

Claims

1. The display module is characterized by comprising a light hole area, wherein the light hole area is used for being corresponding to the camera; the display module includes:

a driving unit electrically connected to the TFT in each of the first sub-pixels, the driving unit configured to: controlling the TFTs in the first sub-pixels to load a first voltage to pixel electrodes of at least part of the first sub-pixels and/or load a second voltage to pixel electrodes of at least part of the first sub-pixels, so that the first sub-pixels where the pixel electrodes loaded with the first voltage are positioned transmit ambient light, and the first sub-pixels where the pixel electrodes loaded with the second voltage are positioned block the ambient light to form at least one of a light transmitting region and a non-light transmitting region in the light hole region;

the driving unit is configured to: and when the camera is in a shooting state, controlling the TFTs in the first sub-pixels to form an annular non-light-transmitting area in the light hole area and the light-transmitting area in the non-light-transmitting area.

2. The display module of claim 1, wherein the outer boundary shape of the non-light-transmitting region is circular, the inner boundary shape of the non-light-transmitting region is circular or regular polygon, and the shape of the light-transmitting region is the same as the shape of the light-transmitting region.

3. The display module of claim 1, wherein the drive unit is configured to: and controlling the TFTs in the plurality of first sub-pixels based on the aperture parameters when the camera shoots so that the area of the light transmission area is equal to the light transmission area corresponding to the aperture parameters.

4. The display module of claim 1, wherein the drive unit is configured to: and when the camera is in a shooting prohibition state, controlling the TFTs in the first sub-pixels so as to form the non-light-transmitting area in the light hole area.

5. The display module of any one of claims 1 to 4, further comprising: the display area is positioned outside the unthreaded hole area, and the liquid crystal display panel further comprises: a plurality of second sub-pixels located within the display area, the second sub-pixels comprising: the driving unit is further electrically connected with the TFTs in each of the second sub-pixels.

6. The display module of claim 5, wherein a pixel density of the first plurality of sub-pixels is less than a pixel density of the second plurality of sub-pixels.

7. The display module of claim 6, wherein the light hole area and the display area each have a plurality of sub-pixel areas, a first sub-pixel is disposed in a part of the sub-pixel areas in the light hole area, and a first sub-pixel is not disposed in another part of the sub-pixel areas; and second sub-pixels are arranged in the plurality of sub-pixel areas in the display area.

8. A display device, comprising: the display module of any one of claims 1 to 7, wherein the camera is positioned on one side opposite to the display surface of the display module, and the orthographic projection of the light receiving surface of the camera on the display module is positioned in the light hole area.

9. A control method of a display device, characterized in that the method is applied to the display device according to claim 8, the method comprising:

10. The method of claim 9, wherein controlling the TFTs in the plurality of first sub-pixels by the driving unit to form at least one of a light transmissive region and a light non-transmissive region within the light aperture region comprises:

11. The method of claim 9, wherein controlling the TFTs in the plurality of first sub-pixels by the driving unit to form at least one of a light transmissive region and a light non-transmissive region within the light aperture region comprises: