WO2020088410A1 - Display screen of terminal device, and terminal device - Google Patents

Abstract

Disclosed is a display screen of a terminal device. A light transmissive part is provided in a display region of the display screen. A camera is provided below the light transmissive part such that light emitted from a target object above the light transmissive part passes through the light transmissive part and is collected by the camera. According to the display screen of the solution, the light emitted from the target object above the display screen passes through the light transmissive part in the display screen and reaches a position below the display screen. Therefore, the camera can be provided blow the display screen, without reserving a bangs region of the display screen, such that the terminal device has a real full screen.

Description

Display screen of terminal equipment and terminal equipment

This application requires the priority of the Chinese patent application filed by the State Intellectual Property Office of China with the application number 201811271636.4 on October 29, 2018, and the Chinese patent application filed with the application number of 201910133125.4 by the Chinese government office on February 22, 2019 Priority, and the priority of the Chinese patent application with the application number 201910603245.6 filed on July 05, 2019 by the State Intellectual Property Office of China, the entire contents of which are incorporated by reference in this application.

Technical field

The invention relates to the technical field of display screens, in particular to a display screen of a terminal device and a terminal device.

Background technique

For terminal devices, such as mobile phones and tablet computers, the display screen is generally a bangs screen. Please refer to FIG. 1, including a display area 82 and a bangs area 81. Among them, the display area 82 is used to display pictures; the bangs area 81 is provided with through holes 83 and 84, and cameras and earpieces are respectively arranged behind the through holes 83 and 84 so that light and sound can pass through the through holes.

The full screen is a relatively broad definition of the ultra-high screen ratio terminal device design in the terminal equipment industry, that is, the front of the terminal device is all the screen, and the surrounding position of the terminal device is designed with a borderless design, pursuing nearly 100% of the screen ratio. However, because the front camera of the terminal device must be installed on the front of the terminal device, it inevitably occupies a part of the display screen. Therefore, although the R & D personnel try to reduce the bangs area of the display screen, the terminal device still has not been truly comprehensive. Screen.

Summary of the invention

In order to solve the above problems, the present application provides a display screen of a terminal device, so that the camera is arranged below the display screen, and there is no need to reserve the bangs area of the display screen, so that the terminal device has a true full screen.

In a first aspect, a display screen of a terminal device is provided, and a light-transmitting portion is provided in a display area of the display screen, and a camera is provided below the light-transmitting portion, so that a target above the light-transmitting portion emits The light passes through the light-transmitting part and is collected by the camera.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the display area includes a light-emitting panel, and a light-emitting unit and a circuit for driving the light-emitting unit are not provided on a partial area of the light-emitting panel to form The light transmitting part.

With reference to the first implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the light-transmitting portion includes at least two sub-light-transmitting portions, the camera includes a convex lens and an image sensor; and the target object The light emitted by a point on the light passes through the at least two sub-light-transmitting portions and the convex lens, respectively, and at least two light spots corresponding to the sub-light-transmitting portions are formed on the image sensor. The two light spots overlap.

With reference to the first aspect and the foregoing possible implementation manners, in a third possible implementation manner of the first aspect, the sizes of the at least two sub-light-transmitting portions are different.

With reference to the first aspect and the foregoing possible implementation manners, in a fourth possible implementation manner of the first aspect, the at least two sub-light transmitting portions include a first sub-light transmitting portion and a second sub-light transmitting portion; the first The number of one sub-transparent part is 1-9, the diameter of the first sub-transparent part is 100-1000 microns; the number of the second sub-transparent part is 8-10000, the second sub-transparent part The diameter of the light transmitting part is 5-100 microns.

With reference to the first aspect and the foregoing possible implementation manners, in a fifth possible implementation manner of the first aspect, the second sub-light transmitting portion is symmetrically disposed with respect to the first sub-light transmitting portion.

With reference to the first aspect and the foregoing possible implementation manners, in a sixth possible implementation manner of the first aspect, the second sub-light-transmitting portion is disposed around the periphery of the first sub-light-transmitting portion.

With reference to the first aspect and the foregoing possible implementation manners, in a seventh possible implementation manner of the first aspect, the at least two sub-light-transmitting portions are arranged in a straight line or a mesh on the display area.

With reference to the first aspect and the foregoing possible implementation manners, in an eighth possible implementation manner of the first aspect, light-emitting units and driving light-emitting units are arranged on the light-emitting board except for the light-transmitting portion Circuit, the light-emitting unit includes a red light unit, a green light unit, and a blue light unit; the light-emitting unit not provided on the light-emitting board is one or two colors of red light unit, green light unit, and blue light unit unit.

With reference to the first aspect and the foregoing possible implementation manners, in a ninth possible implementation manner of the first aspect, the display area includes a status bar at the edge of the display area, and the light-transmitting portion is provided in the status bar in.

With reference to the first aspect and the foregoing possible implementation manners, in a tenth possible implementation manner of the first aspect, the status bar is used for displaying icons, and the light-transmitting portion is provided in the status bar for displaying the Icon area.

With reference to the first aspect and the foregoing possible implementation manners, in an eleventh possible implementation manner of the first aspect, a light blocking film is further included, and a first opening is provided on the light blocking film corresponding to the position of the light-transmitting portion Through hole.

With reference to the first aspect and the foregoing possible implementation manners, in a twelfth possible implementation manner of the first aspect, the at least two sub-light transmitting portions include a first sub-light transmitting portion and a second sub-light transmitting portion, the The size of the first sub-light transmission part is larger than that of the second sub-light transmission part; the diameter of the first sub-light transmission part is larger than 100 microns, and the diameter of the second sub-light transmission part is smaller than 500 microns.

With reference to the first aspect and the foregoing possible implementation manners, in a thirteenth possible implementation manner of the first aspect, the first through hole includes a light-transmitting hole for acquiring a fingerprint characteristic image, and / or for acquiring The light-transmitting hole of the facial feature image.

With reference to the first aspect and the foregoing possible implementation manners, in the fourteenth possible implementation manners of the first aspect,

The light-blocking film is provided under the light-emitting unit of the display screen; or,

The light blocking film is provided between the light emitting unit of the display screen and the circuit of the display screen; or,

The light blocking film is disposed between the multilayer circuits of the display screen; or,

The light blocking film is disposed under the circuit of the display screen.

With reference to the first aspect and the foregoing possible implementation manners, in a fifteenth possible implementation manner of the first aspect, when the light blocking film is disposed under the light emitting unit of the display screen, or the light blocking film is disposed When the light-emitting unit of the display screen and the circuit of the display screen, the first through hole is also used for the wiring between the light-emitting unit and the circuit of the display screen;

When the light blocking film is disposed between the multilayer circuits of the display screen, the first through holes are also used for wiring between the multilayer circuits of the display screen.

With reference to the first aspect and the foregoing possible implementation manners, in a sixteenth possible implementation manner of the first aspect, the light-transmitting portion includes at least two sub-light-transmitting portions, and the at least two sub-light-transmitting portions are displayed in the display Non-periodic arrangement in the area.

With reference to the first aspect and the foregoing possible implementation manners, in a seventeenth possible implementation manner of the first aspect, in the non-periodically arranged sub-transparent portions, at least one row of the sub-transparent portions includes N sub-light-transmitting parts, the separation distance between the i-th sub-light-transmitting part and the i + 1th sub-light-transmitting part is s / i; where N and i are both integers, N≥2, and N> i> 0.

With reference to the first aspect and the foregoing possible implementation manners, in the eighteenth possible implementation manner of the first aspect, when the separation distance s / i between the i-th sub-light transmitting portion and the i + 1 th sub-light transmitting portion is less than At the preset value, at least one sub-transparent part of the i + 1th to N-1th sub-transparent parts is omitted.

With reference to the first aspect and the foregoing possible implementation manners, in a nineteenth possible implementation manner of the first aspect, in the non-periodically arranged sub-light transmitting portions, any two adjacent sub-light transmitting portions The separation distance is a random number.

With reference to the first aspect and the foregoing possible implementation manners, in a twentieth possible implementation manner of the first aspect, among the non-periodically arranged sub-transparent portions, at least two of the sub-transparent portions The size or shape is different.

With reference to the first aspect and the foregoing possible implementation manners, in the twenty-first possible implementation manner of the first aspect, in the non-periodically arranged sub-light-transmitting portions, any two adjacent sub-light transmissions The separation distance between the parts is the same or different.

With reference to the first aspect and the foregoing possible implementation manners, in the twenty-second possible implementation manner of the first aspect, the display screen further includes a wave plate structure corresponding to the light-transmitting portion, the wave plate The structure includes a light-shielding belt and a light-transmitting belt, so that the light emitted by the target above the light-transmitting portion passes through the light-transmitting portion and the light-transmitting belt, and is collected by the camera.

With reference to the first aspect and the foregoing possible implementation manners, in the twenty-third possible implementation manners of the first aspect, the light-transmitting portion includes at least two sub-light-transmitting portions; a plurality of the sub-light-transmitting portions correspond to one Describe the structure of the belt plate.

With reference to the first aspect and the foregoing possible implementation manners, in a twenty-fourth possible implementation manner of the first aspect, the light-transmitting portion includes at least two sub-light-transmitting portions; each third sub-light-transmitting portion corresponds to one In the wave plate structure, the third sub-light transmission part is a sub-light transmission part greater than a preset size threshold.

With reference to the first aspect and the foregoing possible implementation manners, in the twenty-fifth possible implementation manner of the first aspect, the wave plate structure is disposed below the light-emitting unit of the display screen; or,

The wave plate structure is provided between the light-emitting unit of the display screen and the circuit of the display screen; or,

The wave plate structure is disposed between the multilayer circuits of the display screen; or,

The wave plate structure is arranged under the circuit of the display screen.

With reference to the first aspect and the foregoing possible implementation manners, in the twenty-sixth possible implementation manner of the first aspect, when the wave plate structure is disposed below the light-emitting unit of the display screen, or, the wave band When the sheet structure is provided between the light-emitting unit of the display screen and the circuit of the display screen, the light-transmitting tape is also used for the wiring between the light-emitting unit and the circuit of the display screen;

When the wave plate structure is disposed between the multi-layer circuits of the display screen, the light-transmitting belt is also used for wiring between the multi-layer circuits of the display screen.

In a second aspect, a terminal device is provided. The terminal device includes any display screen of the first aspect.

In the above technical solution, since the light transmitting portion is provided in the display area of the display screen, the light above the light transmitting portion can pass through the light transmitting portion and reach the light transmitting portion below. The camera is arranged below the light-transmitting part. When an image needs to be collected, the light emitted from the target above the display screen passes through the light-transmitting part and is collected by the camera. Through such a design, the camera can be set below the display screen without the need to retain the bangs area of the display screen, so that the terminal device has a true full screen.

BRIEF DESCRIPTION

In order to more clearly explain the technical solution of the present application, the following will briefly introduce the drawings that need to be used in the embodiments. Obviously, for those of ordinary skill in the art, without paying creative labor, Other drawings can also be obtained from these drawings.

FIG. 1 is a schematic structural diagram of a display screen in the prior art;

2 is a schematic diagram of the front structure of one of the implementation manners of the display screen of the present application;

Figure 3 is a schematic diagram of the front structure of the second implementation of the display screen of the application;

4 is a schematic diagram of the optical path when an implementation of the display screen of the present application is used;

5 is two cases of a partially enlarged schematic view of A in the schematic diagram of the optical path of FIG. 4;

6 is a schematic structural diagram of a third implementation of the display screen of the present application before partial light-emitting units and circuits are omitted;

7 is a schematic structural view of a third implementation of the display screen of the present application, after omitting some light-emitting units and circuits;

8 is a schematic diagram of the side structure of the third implementation of the display screen of the application;

9 is a schematic diagram of a structure of a display screen of the present application before the partial fourth light emitting unit and circuit are omitted;

10 is a schematic structural view of a fourth implementation of the display screen of the present application, after omitting some light-emitting units and circuits;

FIG. 11 is a schematic structural diagram of a fifth implementation of the display screen of the present application, after omitting some light-emitting units and circuits;

FIG. 12 is a schematic diagram of a structure of a display screen of the present application after the partial omission of some light-emitting units and circuits in the sixth implementation manner;

13 is a schematic view of the structure of the display screen of the present application after the partial omission of some light-emitting units and circuits;

14 is a schematic diagram of the optical path of the display screen of the present application in the eighth implementation;

15 is two partial enlarged schematic diagrams of B in the schematic diagram of the optical path of FIG. 14;

16 is a schematic view of the structure of the display screen of the ninth application of the present application, after a part of the light-emitting units and circuits are omitted;

17 is a schematic view of the tenth implementation of the display screen of the present application, when a plurality of sub-transmissive portions of the same size are arranged in a matrix, a contrast schematic diagram of a target image calculated by a fast Fourier transform algorithm;

18 is a schematic diagram of a point spread function of an image of a point on a target when a plurality of sub-light-transmitting portions of the same size are arranged in a matrix in the tenth implementation manner of the display screen of the present application;

19 is a tenth implementation of the display screen of the present application, when multiple sub-transparent parts of the same size are arranged in a matrix, an image collected by the camera under the sub-transparent parts;

20 is a partial enlarged view of the area C in FIG. 19;

21 is a schematic diagram of the front structure of the eleventh implementation of the display screen of the application;

22 is a schematic diagram of the front structure of the twelfth implementation of the display screen of the application;

23 is a schematic diagram of the contrast of a target image calculated by a fast Fourier transform algorithm when multiple sub-transmissive portions with different sizes are arranged in an arrangement in a display screen of this application;

FIG. 24 is a schematic diagram of a point spread function of an image of a point on a target when multiple sub-transmissive portions with different sizes are arranged in an arrangement in the display screen of this application;

25 is a schematic diagram of the optical path of the thirteenth implementation mode of the display screen of the present application in use;

26 is a schematic diagram of the front structure of the fourteenth implementation manner of the display screen of the present application;

FIG. 27 is a schematic diagram of the structure and corresponding function description of a periodically arranged array of sub-light-transmitting parts in this application;

FIG. 28 is a schematic diagram of light propagation obtained by Fourier transforming the periodic gate function shown in FIG. 27;

FIG. 29 is a schematic diagram of an implementation manner in which a plurality of sub-light-transmitting portions of the same size are non-periodically arranged in the fifteenth implementation manner of the display screen of the present application;

30 is a schematic diagram of an implementation manner in which a plurality of sub-light-transmitting portions with different sizes are non-periodically arranged in the sixteenth implementation manner of the display screen of the present application;

31 is a schematic diagram of an implementation manner in which a plurality of sub-light-transmitting portions with different shapes are non-periodically arranged in the seventeenth implementation manner of the display screen of the present application;

FIG. 32 is a schematic structural plan view of an implementation manner of a plurality of sub-transmissive portions with different sizes and shapes in non-periodic arrangement, and a wave plate in the eighteenth implementation manner of the display screen of the present application;

FIG. 33 is a schematic side view of an implementation manner of a plurality of sub-light-transmitting portions of the same size in a nineteenth implementation manner of a display screen of the present application, and an implementation manner of a wave plate.

Description of reference signs:

Figure 1: Liu Hai area 81; display area 82; through holes 83, 84;

Figures 2 to 33: display area 1; status bar 11; light transmission section 2; sub-light transmission section 21; first sub-light transmission section 211; second sub-light transmission section 212; light-emitting board 3; light-emitting unit 31; red Light unit 311; green light unit 312; blue light unit 313; circuit 32; light-blocking film 4; first through hole 41; light-transmitting hole combination 411 for collecting facial feature images; light transmission for collecting fingerprint feature images Hole combination 412; camera 5; convex lens 51; image sensor 52; target 6; h point 61; light spots 7, 71, 72, 73, 74; wave plate structure 9; light shielding band 91; light transmission band 92.

detailed description

The embodiments of the present application will be described in detail below. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, just to simplify the description, and does not indicate or imply that the device or element referred to must have a specific orientation or be constructed in a specific orientation And operation, therefore can not be understood as a limitation of this application.

In addition, the terms “first” and “second” are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise specifically limited.

Please refer to FIGS. 2 to 5. In the first embodiment of the present invention, a display screen of a terminal device is provided, and a light-transmitting portion 2 is provided in a display area 1 of the display screen, and below the light-transmitting portion 2 A camera 5 is provided so that the light emitted by the target 6 above the light-transmitting portion 2 passes through the light-transmitting portion 2 and is collected by the camera 5.

The light-transmitting portion can be provided at any position of the display screen, and can be any shape, which is not limited in this application. For example, referring to FIG. 2, the light-transmitting portion may be provided in the middle of the display area, and its shape is circular. For another example, please refer to FIG. 3, the light-transmitting portion may be disposed in an upper portion of the display area near the edge, and the shape is rectangular.

The camera 5 here may include a convex lens 51 and an image sensor 52. The convex lens 51 is disposed below the light-transmitting portion 2, and the image sensor 52 is disposed below the convex lens 51, so that the light passing through the light-transmitting portion 2 is refracted by the convex lens 51 before reaching the image sensor 52. When an image needs to be captured, the light rays a1 and a2 emitted from an h point 61 on the target 6 above the light-transmitting part 2 first pass through the light-transmitting part 2, and then refracted by the convex lens 51 to form an image sensor 52 Light spot 7. Multiple points on the target object correspondingly form multiple light spots on the image sensor. After processing by the image processor, an image about the target object can be formed.

It should be noted that, in an ideal situation, the light emitted by a point on the target and the spot formed on the image sensor is a light spot, as shown in FIG. 5 (a). However, in actual application, due to possible deviations in the focal length, image distance, or object distance of the convex lens, as well as the diffraction effect of light, it cannot be ideally converged on the same point of the image sensor, so that there will be unclear around the light spot The edge of the resulting light spot is greater than a light spot, as shown in Figure 5 (b). The light spot described in this application may include any one of the above two cases.

In the above technical solution, since the light transmitting portion is provided in the display area of the display screen, the light above the light transmitting portion can pass through the light transmitting portion and reach the light transmitting portion below. The camera is arranged below the light-transmitting part. When an image needs to be collected, the light emitted from the target above the display screen passes through the light-transmitting part and is collected by the camera. Through such a design, the camera can be set below the display screen without the need to retain the bangs area of the display screen, so that the terminal device has a true full screen.

It should be understood that although there are descriptions about the camera and the target in the description of the display screen, the above-mentioned display screen itself does not include the camera and the target.

It should be understood that the light emitted by a point on the target may be either the light emitted by the target itself or the light reflected or scattered by the surface of the target, which is not limited in this application.

It should be noted that the display screen may include other structures in addition to the light-emitting panel, the display unit and the circuit provided on the light-emitting panel. For example, the display screen may further include a filter, a panel, etc. disposed above the light emitting unit. Here, the panel, filter, etc. are made of a light-transmissive material. At this time, the panel, the filter, and the light-emitting plate part where the light-emitting unit area is not provided together constitute the light-transmitting portion provided in the display screen in the present application.

Referring to FIG. 6, the display screen generally includes a light-emitting panel 3, which is also called a pixel layer and includes a material that can emit light. The light-emitting board 3 may specifically include a light-emitting unit 31 and a part of a circuit 32 that drives the light-emitting unit 31. These light emitting units 31 are opaque, or partially opaque. The light-emitting unit 31 may be an organic light-emitting diode (Organic Light-Emitting Diode, OLED). During normal use, each organic light-emitting diode is controlled by a circuit to display different light-emitting states and form a display image. Each light-emitting unit or each group of light-emitting units may correspond to one pixel. The light emitting unit 31 here may include one or more of a white light unit, a red light unit, a green light unit, and a blue light unit. For example, each white light unit may individually correspond to a pixel. For another example, each group of light-emitting units may include one red light unit, one green light unit, and one blue light unit, and each group of light-emitting units corresponds to one pixel. For another example, each group of light-emitting units may include one red light unit, two green light units, and one blue light unit, and each group of light-emitting units also corresponds to one pixel. In addition, the circuit for driving the light-emitting unit described above is also not transparent. It should be noted that the circuit for driving the light-emitting unit in the light-emitting board may only be a part of the drive circuit for driving the light-emitting unit in the entire display screen.

In order to form the aforementioned light-transmitting portion, please refer to FIGS. 7 and 8. In one implementation, a light-emitting unit and a circuit for driving the corresponding light-emitting unit may not be provided on a partial area of the light-emitting board 3. In this way, the light above the display screen passes through the light-transmitting portion 2 and reaches the bottom of the display screen, so that it is collected by the camera 5 disposed below the light-transmitting portion 2. The other areas on the light-emitting panel 3 are normally arranged with the light-emitting unit 31 and the circuit 32 for driving the light-emitting unit, so that the display screen maintains a better display effect.

In order to reduce the influence of the light-transmitting portion on the display effect of the display screen, in an implementation manner, the light-transmitting portion may be disposed at a position near the edge of the display area, such as the status bar. It should be understood that the edge of the display area here may be an upper edge, a lower edge, a left edge, or a right edge of the display area. For example, the display area 1 shown in FIG. 3 includes the upper status bar 11. The status bar 11 is generally used to display icons or text characterizing status information such as the network connection status, battery status, and lock status of the terminal. When the status bar 11 lacks one or a few pixels, it has less impact on the user's use, so the light-transmitting portion 2 can be set at the position where the status bar 11 is located.

In another implementation manner, the light-transmitting portion may also be provided at the position where the icon in the status bar is, that is, in the area of the status bar for displaying the icon.

For example, in the battery status icon, the image of a battery takes 36 pixels, and each pixel corresponds to a light-emitting unit. Then, the light-emitting unit corresponding to 8 of the 36 pixels and the corresponding circuit can be omitted. In other words, 36 light-emitting units should have been installed, but now 28 have been installed. The 8 omitted light-emitting units may be 8 light-emitting units provided in succession, or may be spaced apart from the light-emitting units that are not omitted, which is not limited in this application.

Optionally, for a display screen where one pixel corresponds to a group of light-emitting units, when the light-emitting units are omitted to form the light-transmitting portion, only a part of the light-emitting units and corresponding circuits in the group of light-emitting units may be omitted. For example, the omitted light-emitting unit may be a light-emitting unit of the same color; or, the omitted light-emitting unit may be a light-emitting unit of several specific colors, so that in a group of light-emitting units, the light-emitting units that are not omitted are the same type Color light unit.

For example, in the battery status icon, the image of a battery takes 36 pixels, and each pixel corresponds to four light-emitting units: 2 red, 1 blue, and 1 green, as shown in Figure 9 . Then, the light emitting unit of the same color corresponding to each pixel can be omitted, for example, the green light unit is omitted, as shown in FIG. 10. In addition, both the green light unit and the red light unit may be omitted, leaving only the blue light unit. In this way, each pixel of the 36 pixels can still be displayed, but the color that can be displayed is reduced compared with the original.

In this way, on the one hand, it does not affect the meaning indicated by the icon in the status bar, on the other hand, it also further reduces the influence of the light-transmitting portion on the display effect of the display screen.

It should be understood that regardless of whether the light-transmitting area is provided at any position in the display area, the light-emitting units not provided on the light-emitting board may be the same color or light-emitting units of the same color, thereby reducing the display effect on the display screen influence level.

Since the light-emitting unit and the circuit sometimes cannot completely cover the whole light-emitting board, in another implementation, one can be determined from the area not covered by the light-emitting unit and the circuit on the light-emitting board (such as the edge area of the light-emitting board) Or several translucent areas to form the aforementioned translucent portion.

When the area where the light emitting unit is not provided is continuous, the size of the formed light-transmitting portion is large, as shown in FIG. 11. When the area where the light emitting unit is not provided is separated from the area where the light emitting unit 31 is provided, a plurality of sub-light-transmitting portions are formed, as shown in FIGS. 10 and 12 to 14. That is, the aforementioned light-transmitting portion may include at least two sub-light-transmitting portions.

At this time, the light emitted from a point on the target above the light-transmitting part respectively passes through the at least two sub-light-transmitting parts, then passes through the convex lens, and finally forms at least two corresponding to the sub-light-transmitting parts on the image sensor Spots, and these at least two spots overlap.

For example, referring to FIG. 14, the light-transmitting portion 2 includes two sub-light-transmitting portions 21. The light rays a3 and a4 emitted from the h point 61 on the target 6 pass through a sub-transmissive portion 21, and after being refracted by the convex lens 51, a light spot 71 is formed on the image sensor 52; the light rays a5 and a6 pass through another sub-light After the light-transmitting portion 21 is refracted by the convex lens 51, a light spot 72 is formed on the image sensor 52.

Similar to the foregoing case, in an ideal situation, the light emitted by a point on the target passes through a sub-transmissive portion, and the light spot formed on the image sensor is a light spot. However, in practical applications, due to possible deviations in the focal length, image distance, or object distance of the convex lens, as well as the diffraction effect of light, the resulting light spot is larger than a light spot. When the light emitted from the same point passes through the two sub-light-transmitting portions, ideally, it is required that the two light spots 71 and 72 formed separately completely overlap, as shown in FIG. 15 (a). However, in actual application, the two light spots 71 and 72 may only partially overlap, as shown in FIG. 15 (b). In the present application, the aforementioned at least two light spots overlap, which may include the case of full overlap and partial overlap.

By adopting the above technical solution, when one light-transmitting portion includes multiple sub-light-transmitting portions, the amount of light entering through the light-transmitting portion is increased, the light intensity is increased, the light diffraction is reduced, and the resolution of the image collected by the camera is improved.

Optionally, when one light-transmitting portion includes a plurality of sub-light-transmitting portions, the camera may include a plurality of convex lenses, one convex lens corresponding to each of the sub-light-transmitting portions. In this way, the light emitted by a point on the target passes through at least two sub-transparent parts and the convex lens corresponding to the sub-transparent parts respectively, and then at least two corresponding to the sub-transparent parts are formed on the image sensor Light spots, and these at least two light spots overlap.

For example, referring to FIG. 25, the light-transmitting portion 2 includes two sub-light-transmitting portions 21, and the camera 5 includes two convex lenses 51 and one image sensor 52. The two convex lenses 51 correspond to the two sub-light-transmitting portions 21, respectively. The light rays a7 and a8 emitted by the h point 61 on the target 6 pass through a sub-transmissive portion 21, and after being refracted by the corresponding convex lens 51, a light spot 73 is formed on the image sensor 52; the light rays a9 and a10 pass through another One sub-light transmitting portion 21 is refracted by the corresponding convex lens 51 to form a light spot 74 on the image sensor 52. Similar to the case of the aforementioned light spots 71 and 72, the light spots 73 and 74 formed here may completely overlap, or may partially overlap. It should be noted that, in this case, the two convex lenses need to cooperate with each other and tilt at a certain angle, so that the two light spots on the image sensor overlap.

Optionally, the aforementioned at least two sub-light-transmitting portions may be arranged in a straight line on the display area. As shown in FIG. 12, the light-emitting unit 31 and the circuit 32 on the light-emitting board 3 separate the area where the light-emitting unit and the circuit are not provided, To form a plurality of sub-light-transmitting parts. Optionally, the aforementioned at least two sub-light-transmitting portions may also be arranged in a mesh shape on the display area, as shown in FIG. 13. In addition, the plurality of sub-light-transmitting portions may also be arranged in other shapes, for example, in a circular, rectangular, regular polygonal shape, as shown in FIG. 16.

It should be noted that, in the implementation of forming the light-transmitting portion by omitting the light-emitting unit, the number of light-emitting units that are omitted for each sub-light-transmitting portion may be one or more. This is not limited. The shape of the sub-light-transmitting portion may be a circle, a rectangle, a regular polygon, or the like, which is not limited in this application.

As mentioned before, please refer to FIG. 7, in addition to the opaque light-emitting unit 31, the circuit 32, and the aforementioned light-transmitting portion 2 formed by omitting the light-emitting unit and the circuit, there may still be some transparent Irregular areas of light. Some components in the display screen, such as the light-emitting unit, may emit light through the light-transmitting part or through these irregular light-transmitting areas, reach the image sensor, and form a light spot on the image sensor, thereby Parameters that affect the clarity of the image of the target. In addition, the external light above the display screen, after reflection, refraction, etc., may also pass through these irregular light-transmitting areas, forming a light spot on the image sensor. These light spots overlap the light spots formed by the light emitted by the target, thereby interfering with the light spots formed by the light emitted by the target, and reducing the clarity of the image finally acquired by the image sensor.

In order to solve this problem, optionally, please refer to FIG. 8, a light-blocking film 4 may also be provided under the display area of the display screen, and a first through hole is formed on the light-blocking film 4 at a position corresponding to the light-transmitting portion 2 41. By providing the light-blocking film 4, part of the light that interferes with the light emitted by the target, that is, some components in the display screen, such as the light-emitting unit, part of the light emitted, and the location of the target outside the screen can be blocked Part of the light in the environment, thereby improving the quality of the image obtained about the target.

The shape of the first through hole 41 here may be the same as the shape of the light transmitting portion 2 or different from the shape of the light transmitting portion; the size of the first through hole may be the same as the size of the light transmitting portion, or may be the same as the light transmitting portion Of different sizes. When the light-transmitting part 2 includes a plurality of sub-light-transmitting parts 21, a plurality of first through holes corresponding to the sub-light-transmitting parts may be opened in the light-blocking film 4.

In addition, the first through hole in the light blocking film can also regulate the shape and size of the light-transmitting portion and standardize the light-transmitting portion. For example, the light-transmitting part in the display screen may be rectangular, and its size is 120 μm × 140 μm, and what is actually needed is a circular light-transmitting area with a diameter of 100 μm. It is relatively difficult to achieve this requirement by changing the design of the light-emitting board, light-emitting unit or circuit. In the solution of the present application, the first through hole on the light blocking film corresponding to the light-transmitting portion may be a circular through hole with a diameter of 100 μm.

It should be understood that the first through hole in this application refers to a portion of the light blocking film that allows light to reach the other side from one side. The first through hole may be a conventional through hole, which may also be filled with a light-transmissive material, which is not limited in this application.

The terminal device using the display screen of the present application can be applied to biometric image collection, such as fingerprint characteristic images or face characteristic images. For different targets, the requirements for collecting biometric images may be different. For example, in general, the resolution of fingerprint feature images is higher than that of facial feature images. Therefore, the acquisition of fingerprint feature images requires holes with smaller diameters, while the acquisition of facial feature images can use holes with larger diameters. As described above, it is technically more convenient to use the first through hole to indirectly regulate the shape and size of the light-transmitting portion compared to directly regulating the shape and size of the light-transmitting portion. Therefore, the first through holes of different sizes can be provided on the light-blocking film, one part is a light-transmitting hole for collecting a fingerprint feature image, and the other part is a light-transmitting hole for collecting a feature image of a human face, so as to collect various Types of biometric images broaden the applicability of terminal devices.

It should be noted that, in all the first through holes, the light-transmitting hole used for collecting the fingerprint characteristic image may be a first through hole, or a combination of multiple first through holes with the same or different sizes . Similarly, the light-transmitting hole used to collect the facial feature image may be a first through hole, or a combination of multiple first through holes with the same or different sizes. For example, referring to FIG. 26, the dotted line in the figure is the corresponding position of the first through hole on the light blocking film on the display area 1. Among them, 411 represents the combination of light-transmitting holes used to collect facial feature images, including a relatively large first through hole and six relatively small first through holes; 412 represents used to collect fingerprint features The light-transmitting hole combination of the image includes 16 first through holes with relatively small sizes.

Optionally, the first through holes for different purposes may respectively correspond to different image sensors, or may share an image sensor, which is not limited in this application. When the image sensor is shared, the structure of the terminal device can be simplified, and the manufacturing cost of the terminal device can be reduced.

When it is necessary to provide a plurality of first through holes with different sizes on the light blocking film, a photolithography process may be used. The photolithography process mainly refers to the technology of transferring the pattern on the lithography mask to the substrate by means of photoresist under the action of light. Generally speaking, if a first through hole of a size is opened in the light blocking film, a layer of photolithography mask is usually used. If multiple first vias with different sizes need to be opened, multiple layers of photolithography masks are used to complete them. In the solution of the present application, when a plurality of first through holes with different diameters are opened, a layer of photolithography mask may be used. That is, a layer of photolithography mask has the purpose of opening multiple first through holes of different diameters at the same time, thereby saving the manufacturing cost.

Optionally, in an implementation manner, any of the foregoing light-blocking films 4 may be disposed below the light-emitting unit 31 of the display screen. At this time, the first through hole 41 is also used for wiring between the light emitting unit 31 and the circuit of the display screen below it. That is, in addition to allowing the light to pass through the first through hole 41, the connection line between the circuit of the display screen and the light emitting unit 31 may also pass through the first through hole 41. It should be noted that, preferably, the trace should not affect the ability of the first through-hole 41 to transmit light or the shape of the light-transmitting portion, that is, the first through-hole 41 still has the aforementioned various functions and functions.

Optionally, in another implementation manner, the light blocking film 4 may be disposed between the light emitting unit 31 of the display screen and the circuit of the display screen. At this time, the first through hole 41 is also used for wiring between the light emitting unit 31 and the circuit of the display screen. That is, in addition to allowing the light to pass through the first through hole 41, the connection line between the circuit of the display screen and the light emitting unit 31 may also pass through the first through hole 41. Similarly, preferably, the trace should not affect the ability of the first through-hole 41 to transmit light or the shape of the light-transmitting portion, that is, the first through-hole 41 still has the aforementioned various functions and functions.

Optionally, in another implementation manner, the light blocking film 4 may be disposed between the multilayer circuits of the display screen. At this time, the first through hole 41 is also used for wiring between circuits of various layers of the display screen. That is, in addition to being able to transmit light, the first through-hole 41 can also pass through the connecting line between the circuits of the various layers of the display screen through the first through-hole 41. Similarly, preferably, the trace should not affect the ability of the first through-hole 41 to transmit light or the shape of the light-transmitting portion, that is, the first through-hole 41 still has the aforementioned various functions and functions.

Alternatively, in another implementation manner, the light blocking film 4 may be disposed under the circuit of the display screen.

It should be noted that the circuit of the display screen here may include the aforementioned circuit for driving the light-emitting unit, and may also include circuits that may exist in other display screens, such as a touch sensing circuit and the like.

It should also be noted that the light-blocking films in various embodiments of the present application, including any of the light-blocking films in the foregoing and subsequent embodiments, may use conductive materials, such as metal materials or conductive non-metallic materials. In the display screen of the embodiment of the present application, the use of conductive materials for the light-blocking film can play many roles.

First, the light-blocking film can function as a power source. Specifically, the light-blocking film can be used as a positive electrode of a power source to supply power to various components connected to the light-blocking film; it can also be used as a negative electrode (ground electrode) to form a circuit loop.

Second, the light-blocking film can provide stable and consistent potential for each component connected to it. The light-blocking film is a large flat conductor, and its cross-section is much smaller than that of ordinary wires, especially the cross-section of the wires in the driving circuit of the display pixels in the display screen, so that its resistance is very high compared to ordinary wires Small, will not cause the problem that the potential gradually decreases along the direction of the current like ordinary wires. Therefore, in the embodiments of the present application, the light-blocking film can provide a stable and uniform potential for each component connected to the light-blocking film. For example, the light-blocking film can serve as a ground electrode to provide a stable and uniform potential.

Third, the light blocking film also has the function of blocking stray electromagnetic waves and reducing the disturbance of voltage and current. There may be some electromagnetic waves for communication and other purposes in the terminal device (such as a mobile phone, etc.) using a display screen. These stray electromagnetic waves may affect the normal operation of other functional units in the terminal device. When the light-blocking film is made of conductive material, because of its good conductivity and large area, it can be used as a side of a flat panel capacitor and form a capacitor with other possible devices or other parts. Stray electromagnetic waves will decay very quickly in the capacitor, or average over time, thereby blocking the stray electromagnetic waves and protecting the functional units in the terminal equipment that may be interfered by the stray electromagnetic waves. In addition, some user operations on the terminal device, such as turning on / off or turning on / off the LED lights in the terminal device, may cause the voltage and current in the circuit loop to suddenly increase or decrease, resulting in shock and disturbance. Since the light blocking film can form a flat capacitor with other possible devices, it can play a buffer role and reduce the disturbance of voltage and current.

When the light-transmitting portion includes a plurality of sub-light-transmitting portions, the contrast of the formed image fluctuates due to the diffraction of light. FIG. 17 is a schematic diagram of contrast of a target image calculated by a fast Fourier transform (FFT) algorithm when a plurality of sub-transmissive portions of the same size are arranged in a matrix. As can be seen from the figure, in the case where the distance from the camera to the target, that is, the object distance is a fixed distance, as the distance of the line pairs in the target increases, the contrast of the image does not always decrease. the trend of. At first, the contrast of the image gradually decreased as the distance of the line pair increased; then, as the distance of the line pair further increased, the contrast of the image increased; then as the distance of the line increased, the contrast of the image gradually decreased and then increased. . That is to say, as the distance of the line pair increases, the contrast of the image will change periodically, where each cycle is not exactly the same, and the magnitude of each contrast increase is less than the previous one.

Please refer to FIG. 18. FIG. 18 is a schematic diagram of a point spread function (PSF) of an image of a point on a target when a plurality of sub-transmissive portions of the same size are arranged in a matrix. The point spread function describes the response of an imaging system to a target, that is, the irradiance distribution of a point after passing through the imaging system. It can be seen from the figure that due to the diffraction effect, there are multiple secondary peaks on the outer periphery of a main peak, and the peak of the secondary peak is higher, which affects the contrast of the target image to a certain extent. When the secondary peaks formed by two different points on the target are superimposed on each other, the secondary peak formed by the superimposition will be higher and the contrast will be extremely reduced. This can explain why the distance between the contrast and the line pair on the target Related.

FIG. 19 is an image collected by the camera below the sub-light-transmitting parts for reflecting the contrast effect when a plurality of sub-light-transmitting parts of the same size are arranged in a matrix. FIG. 20 is a partial enlarged view of the area C in FIG. 19. In FIG. 20, the upper numerical value indicates the lower pair distance. The larger the value, the smaller the pair distance. The line pair distance here can be understood as the sum of the width of one black line in FIG. 20 and the width of the interval between the black line and the next black line. As can be seen from FIG. 20, the image with a line pair distance of about 6 has a higher contrast, the image with a line pair distance of about 8 has a lower contrast, and the image with a line pair distance of about 10-12 has a higher contrast. The contrast for the images with a distance of about 14-16 is low, showing a periodic change as a whole, which is consistent with the contrast trend calculated in Figure 17.

In order to reduce the influence of the diffraction effect on the image contrast, in an embodiment of the present application, an inventive concept is provided, that is, the size, that is, the size, of the sub-transmissive portion is set to be different.

Here, when the sub-light-transmitting portion is rectangular, its size may refer to the length and width of the rectangle. When the sub-light-transmitting portion is circular, its size may refer to the diameter or radius of the circle. When the sub-light-transmitting portion is a regular polygon, its size may refer to the side length of the regular polygon and so on. In different cases, the sub-transparent portions of the same or different shapes may be used for arrangement, or the sub-transparent portions of the same or different sizes may be used for arrangement.

Optionally, the light-transmitting portion provided in the display screen includes a first sub-light-transmitting portion and a second sub-light-transmitting portion, and the size of the first sub-light-transmitting portion is larger than the second sub-light-transmitting portion. For example, referring to the examples of FIGS. 21 and 22, the first sub-light transmitting portion 211 and the second sub-light transmitting portion 212 are both circular, and the diameter of the first sub-light transmitting portion 211 is larger than the second sub-light transmitting portion 212. Optionally, the diameter of the first sub-light transmission part 211 is greater than 100 microns, and the diameter of the second sub-light transmission part 212 is less than 500 microns.

Optionally, the number of the second sub-light-transmitting parts is ≥2, and is an even number, and is symmetrically arranged on the outer periphery of the first sub-light-transmitting part. For example, please refer to the arrangement shown in FIG. 21, the light-transmitting portion includes a first sub-light-transmitting portion 211 and six second sub-light-transmitting portions 212, and the six second sub-light-transmitting portions 212 are relative to the first The sub-light-transmitting portions 211 are arranged symmetrically. In addition, if the first sub-light transmission part and the second sub-light transmission part of the above arrangement are regarded as one arrangement combination, for a display screen, the light transmission part may include multiple similar arrangement combinations .

Optionally, the second sub-light-transmitting portion is arranged around the periphery of the first sub-light-transmitting portion. Here, the application does not limit the surrounding manner of the second sub-transparent part and the number of the second sub-transparent parts, and for the arrangement of the first sub-transparent parts surrounded by the inside of the second sub-transparent part, And the number of the first sub-light transmitting parts is not limited. For example, please refer to the arrangement shown in FIG. 22, the light transmitting portion includes two first sub light transmitting portions 211 and twenty-four second light transmitting portions 212, the two first sub light transmitting portions 211 It is surrounded by twenty-four second sub-light-transmitting portions 212, and the twenty-four second sub-light-transmitting portions are arranged in a rectangle.

Optionally, the light-transmitting portion may include 1-9 first sub-light-transmitting portions with a diameter of 100-1000 microns; alternatively, the light-transmitting portion may include 8-10000 second sub-light-transmitting portions with a diameter It is 5-100 microns.

Optionally, when a light blocking film is further provided under the display area of the display screen, and the first through hole is provided on the light blocking film corresponding to the position of the light-transmitting portion, the shape and size of the first through hole may be provided by To indirectly regulate the shape and size of the light-transmitting portion. That is, a plurality of first through holes are provided on the light blocking film, including 1-9 large holes with a diameter of 100-1000 microns; and 8-10000 small holes with a diameter of 5-100 microns.

Through such matching, the influence of the diffraction effect on the image contrast can be reduced to a certain extent. Please refer to Figure 23 and Figure 24. FIG. 23 is a schematic diagram of the contrast of a target image calculated by a fast Fourier transform (FFT) algorithm when a plurality of sub-light-transmitting portions with different sizes are arranged together. It can be seen that compared with FIG. 17, the contrast is improved to a certain extent, especially the contrast at the original trough is greatly improved, and the fluctuation range of the contrast is significantly reduced. FIG. 24 is a schematic diagram of a point spread function of an image of a point on a target when a plurality of sub-transmissive portions with different sizes are arranged together. It can be seen that the peak-to-peak values of the secondary peaks around the main peak are significantly reduced compared to FIG. 18.

As described above, when the light-transmitting portion includes a plurality of sub-light-transmitting portions of the same size, and the plurality of sub-light-transmitting portions are periodically arranged (for example, the aforementioned arrangement in a matrix), the light passing through different sub-light-transmitting portions The interference effect and the diffraction effect are strong, which affects the quality of the image collected by the camera under the display.

For example, please refer to FIG. 27. FIG. 27 is a schematic diagram of the structure and corresponding function description of a periodically arranged array of sub-light-transmitting parts. A periodically arranged array of sub-light-transmitting parts can be described by a periodic gate function (also called a rectangular function). Wherein, the abscissa indicates the distance between a certain point on the display screen and the preset origin, and the ordinate indicates the transmittance of light at a certain point on the display screen. When the point is in the area of the light transmitting portion, the light transmittance at the point is 100%, and when the point is not in the area of the light transmitting portion, the light transmittance at the point is 0%.

Using the knowledge of Fourier optics, the Fourier transform is performed on the periodic gate function shown in FIG. 27 to obtain the schematic diagram of light propagation shown in FIG. 28. Among them, the abscissa represents the spatial frequency, different spatial frequencies represent different directions in space, and the ordinate represents the amplitude. As can be seen from FIG. 28, due to the interference and diffraction effects of light, there will be multiple image spots in different directions in space. Among them, the amplitude of the main image spot is the highest, that is, the light intensity is the largest; the amplitude of the multiple interference image spots is relatively low, that is, the light intensity is relatively small. Correspondingly, in the image collected by the camera, in addition to the main image spot, there are also multiple diffraction image spots, thereby affecting the quality of the image.

In order to reduce the influence of interference effects and diffraction effects on the image quality, the periodic law of the array of sub-light transmission sections can be broken, thereby eliminating or weakening the diffraction effects and interference effects.

Optionally, in an implementation manner of the display screen of the device terminal of the present application, a plurality of sub-light-transmitting portions in the display area may be arranged in an aperiodic manner.

In an implementation manner in which the plurality of sub-light-transmitting portions are non-periodically arranged, the separation distance between the plurality of sub-light-transmitting portions may be set to be different, so that the diffraction effect and the interference effect may be eliminated or weakened. The separation distance between the plurality of sub-light-transmitting portions may vary irregularly. For example, the plurality of sub-light-transmitting portions may be arranged randomly, that is, the separation distance between any two adjacent sub-light-transmitting portions is a random number. The separation distance between the plurality of sub-light-transmitting portions may also vary according to a certain rule. For example, in the non-periodically arranged sub-transparent portions, at least one row of sub-transparent portions includes N sub-transparent portions, and the separation distance between the first sub-transparent portion and the second sub-transparent portion is s, The separation distance between the i-th sub-light-transmitting portion and the i + 1th sub-light-transmitting portion is s / i; where N and i are both integers, N ≧ 2, and N> i ≧ 0. That is, a row of sub-light-transmitting portions is arranged according to a regular change in which the separation distance is equal to the reciprocal of the sub-light-transmitting portions. As shown in FIG. 29, on the display area 1, the separation distance between the first sub-transparent portion 21 and the second sub-transparent portion 21 is s, and the second sub-transparent portion 21 and the third sub-transparent portion The separation distance between 21 is s / 2, and the separation distance between the third sub-transparent part 21 and the fourth sub-transparent part 21 is s / 3 ... In this way, the diffraction spot in the image will be The image spots coincide, thereby eliminating or weakening diffraction and interference effects.

Optionally, for an implementation that is arranged according to a regular change in the separation distance equal to the reciprocal of the sub-transmissive portion, the further back, the smaller the separation distance, which improves the formation of multiple sub-transparent portions on the display screen Craft difficulty. For such a case, when the separation distance between adjacent sub-light-transmitting portions is less than a preset value, part of the sub-light-transmitting portions may be omitted on the basis of the original change rule of the separation distance. That is, when the separation distance s / i between the i-th sub-light-transmitting portion and the i + 1th sub-light-transmitting portion is less than a preset value, at least one of the i + 1th to N-1th sub-light-transmitting portions is omitted The sub-light-transmitting parts, on the one hand, can ensure that the spacing distance between the sub-light-transmitting parts actually opened is different, and on the other hand, the spacing distance between the sub-light-transmitting parts actually opened can not be too small.

For example, continuing the example shown in FIG. 29, the separation distance between the fourth sub-transparent part and the fifth sub-transparent part (not shown in the figure) is s / 4, but since s / 4 is too small, the The manufacturing process is difficult, so the original fifth sub-transparent part can be omitted, and the original sixth sub-transparent part can be directly opened (not shown in the figure). Thus, the separation distance between the fourth sub-transparent portion and the sixth sub-transparent portion is (s / 4 + d + s / 5), where d is the diameter of the fifth sub-transparent portion that is omitted. In this way, when actually manufacturing a plurality of sub-light-transmitting parts, the fourth sub-light-transmitting part is adjacent to the sixth sub-light-transmitting part, and the separation distance between the two will not be too small, thereby reducing the process difficulty. At the same time, the separation distance between the plurality of sub-light-transmitting parts can also be kept different, ensuring the effect of eliminating or weakening diffraction and interference.

In another implementation manner in which the plurality of sub-transparent parts are arranged in a non-periodic manner, the separation distance between the plurality of sub-transparent parts may be the same, but the sizes of the plurality of sub-transparent parts may be set to be different. The sizes of the plurality of sub-light-transmitting parts may change irregularly or may change according to a certain regularity. As shown in FIG. 30, the separation distance s between the plurality of sub-light-transmitting portions 21 on the display area 1 is the same, but the diameters d1, d2, d3, and d4 of the sub-light-transmitting portions 21 are different and vary irregularly.

For another example, in another implementation manner in which the plurality of sub-transparent portions are arranged in a non-periodical manner, the separation distance between the plurality of sub-transparent portions may be the same, but the shapes of the plurality of sub-transparent portions may be set to be different. The shapes of the plurality of sub-light-transmitting parts may change irregularly or may change according to a certain regularity. As shown in FIG. 31, the shapes of the plurality of sub-light-transmitting portions 21 on the display area 1 are different and change irregularly.

By setting the size or shape of the plurality of sub-light-transmitting portions differently, the diffraction spots in the image can be blunted. At this time, although the main image spot and the diffraction spot still exist in the image, due to the blurring of the diffraction spot, the contrast makes the main image spot in the image clearer.

It should be noted that the separation distance between the plurality of sub-transparent parts in this application may refer to the distance between the geometric center of one sub-transparent part and the geometric center of another sub-transparent part adjacent thereto, It may also refer to the distance between two shortest points on the edges of two adjacent sub-light-transmitting portions.

It should also be noted that the above-mentioned different implementations for breaking the periodic law of the sub-light-transmissive array can also be combined with each other. For example, in the same display screen, the separation distance between the plurality of sub-light-transmitting parts may be different, and the sizes and shapes of the plurality of sub-light-transmitting parts are also different. For another example, in the same display screen, part of the sub-transmissive portions have different sizes, and another part of the sub-transparent portions have different shapes.

In addition to arranging the sub-light-transmitting portions in a non-periodic manner, it is also possible to break the periodic law of the sub-light-transmitting portion array by providing a wave plate to eliminate or weaken the diffraction effect and interference effect.

Please refer to FIG. 32 and FIG. 33. In one implementation manner of setting the wave plate, the display screen further includes a wave plate structure 9 corresponding to the light transmitting portion. The wave plate structure 9 includes a light shielding belt 91 and a light transmitting belt 92 The light emitted by the target 6 above the light-transmitting part passes through the light-transmitting part and the light-transmitting belt 92 and is collected by the camera 5.

Optionally, referring to FIG. 32 and FIG. 33, the light-transmitting portion includes at least two sub-light-transmitting portions 21, and the plurality of sub-light-transmitting portions 21 may correspond to one wave plate structure 9. In the case where the size of the sub-light-transmitting portions is small, a solution in which a plurality of sub-light-transmitting portions correspond to one wave plate structure may be adopted. During installation, the overlap area of the light transmission band of the wave plate structure and the light transmission part in the display area can be maximized.

Optionally, for a sub-transparent portion with a larger size, for example, a sub-transparent portion greater than a preset size threshold (hereinafter referred to as a third sub-transparent portion), each third sub-transparent portion may correspond to one Band plate structure.

It should be noted that when the wave band plate structure is adopted, the display screen of the terminal device in the embodiment of the present application may not include a convex lens.

It should also be noted that the above-mentioned wave plate structure can also be provided on any of the foregoing light blocking films, that is, a plurality of second through holes are formed on the light blocking film, and a combination of the plurality of second through holes can form one Band plate structure. Among them, one second through hole can be regarded as a light transmission band in the band plate structure, and the light blocking film region between two adjacent second through holes can be regarded as a light blocking in the band plate structure band. One or more wave plate structures can be provided on the entire light blocking film. The light blocking film may be provided with only the wave plate structure, or may be provided with the wave plate structure and the aforementioned first through hole at the same time, which is not limited in this application.

In addition, in the above scheme of providing the wave plate, the plurality of sub-transmissive portions formed in the display area may still be arranged periodically or non-periodically, and the shapes and sizes of the plurality of sub-transparent portions may be the same or different. In practical applications, the plurality of sub-light-transmitting parts may include several sub-light-transmitting parts with relatively large sizes and several sub-light-transmitting parts with relatively small sizes. At this time, the foregoing two methods of setting the wave plate may be combined.

Optionally, referring to FIG. 33, the display screen includes a light-emitting panel, the light-emitting panel includes a light-emitting unit 31, and a circuit 32 that drives the light-emitting unit 31. A light emitting unit and a circuit for driving the light emitting unit are not provided on a partial area of the light emitting board to form a light transmitting portion, and the light transmitting portion may include a plurality of sub-light transmitting portions 21. In one implementation, the wave plate structure 9 may be disposed below the light emitting unit 31, as shown in FIG. 33. At this time, the light-transmitting tape 92 is also used for wiring between the light-emitting unit 31 and the circuit of the display screen below it. That is, in addition to allowing the light to pass through, the light-transmitting tape 92 can also pass through the connection line between the circuit of the display screen and the light-emitting unit 31 through the first through hole.

Alternatively, the wave plate structure may be provided between the light emitting unit and the circuit of the display screen. At this time, the light-transmitting band in the wave plate structure can be used for the wiring between the light-emitting unit and the circuit. That is, in addition to transmitting light, the connection line between the circuit of the display screen and the light emitting unit can also pass through the transmitting tape.

Optionally, the wave-band plate structure may be disposed between multiple layers of circuits in the display screen, and the light-transmitting band in the wave-band plate structure may be used for line routing between circuits of different layers. That is, in addition to allowing the light to pass through, the connection lines between the circuits of the display screen can also pass through the light-transmitting tape.

It is worth noting that, preferably, the above-mentioned circuit routing should not affect the light-transmitting ability of the light-transmitting belt or the shape of the light-transmitting portion, that is, the light-transmitting belt still has the aforementioned various functions and functions.

Alternatively, the wave plate structure may be disposed under the circuit of the display screen.

It should be noted that, similar to the foregoing light blocking film solution, the circuit of the display screen herein may include the aforementioned circuit for driving the light emitting unit, and may also include circuits that may exist in other display screens, such as touch sensing Circuit etc.

Since the sub-light-transmitting part in the display screen can be realized by omitting part of the light-emitting unit and the circuit driving the light-emitting unit, and the light-emitting unit and the circuit in the light-emitting panel are often arranged periodically, therefore, the aforementioned wave plate is used The implementation method, or the method of using the sub-light-transmitting portions with the same spacing distance but different sizes / shapes, is more convenient for industrial implementation.

The above-mentioned non-periodic display screens with sub-transparent parts and display screens provided with wave plate can be applied to the collection of biometric images, such as fingerprint image, palm print image or face image. There may be differences in the requirements for collecting different biometric images. As mentioned above, different implementations can be selected for different targets, which will not be repeated here.

It should be noted that, in the display screen of the present application, the entire display screen may be correspondingly provided with a full-band plate structure or the aforementioned light-blocking film, or may be provided only at a required position, which is not limited in this application.

In a second embodiment of the present application, a terminal device is provided, and the terminal device includes any display screen in the foregoing first embodiment. The terminal device may further include a camera 5, which is disposed below the light-transmitting portion 2 in the display area 1.

Since the terminal device includes the display screen in the first embodiment, it accordingly has the beneficial effects of the display screen in the first embodiment, which will not be repeated here.

It should be understood that the implementation solutions in the embodiments in this specification can be combined with each other as long as they do not logically contradict each other. The same or similar parts between the various embodiments may refer to each other. The above-mentioned embodiments of the present invention do not constitute a limitation on the protection scope of the present invention.

Claims (28)

A display screen of a terminal device, characterized in that a light-transmitting portion (2) is provided in a display area (1) of the display screen, and a camera (5) is provided below the light-transmitting portion (2), so that The light emitted by the target (6) above the light-transmitting part (2) passes through the light-transmitting part (2) and is collected by the camera (5). The display screen of a terminal device according to claim 1, characterized in that the display area (1) includes a light-emitting panel (3), and a light-emitting unit and a drive unit are not provided on a partial area of the light-emitting panel (3) The circuit of the light-emitting unit to form the light-transmitting portion (2). The display screen of a terminal device according to claim 1, wherein the light-transmitting portion (2) includes at least two sub-light-transmitting portions (21), and the camera (5) includes a convex lens (51) and an image sensor (52); the light emitted by a point on the target (6) respectively passes through the at least two sub-light-transmitting parts (21) and the convex lens (51) in sequence, at the image sensor (52) ) At least two light spots corresponding to the sub-light-transmitting portions (21) are formed, and the at least two light spots overlap. The display screen of the terminal device according to claim 3, wherein the sizes of the at least two sub-light-transmitting portions (21) are different. The display screen of a terminal device according to claim 4, characterized in that the at least two sub-transparent parts (21) include a first sub-transparent part (211) and a second sub-transparent part (212); The number of the first sub-light transmitting parts (211) is 1-9, the diameter of the first sub-light transmitting parts (211) is 100-1000 microns; the number of the second sub-light transmitting parts (212) The number is 8-10000, and the diameter of the second sub-light transmission part (212) is 5-100 microns. The display screen of the terminal device according to claim 4, characterized in that the at least two sub-transparent parts (21) include a first sub-transparent part (211) and a second sub-transparent part (212), so The size of the first sub-light transmission part (211) is larger than that of the second sub-light transmission part (212); the diameter of the first sub-light transmission part (211) is more than 100 microns, and the second sub-light transmission part The diameter of (212) is less than 500 microns. The display screen of the terminal device according to claim 6, characterized in that the second sub-light transmitting portion (212) is symmetrically arranged with respect to the first sub-light transmitting portion (211). The display screen of the terminal device according to claim 6, characterized in that the second sub-light transmitting portion (212) is disposed around the outer periphery of the first sub-light transmitting portion (211). The display screen of a terminal device according to claim 3, characterized in that the at least two sub-light-transmitting portions (21) are arranged in a straight line or a mesh on the display area (1). The display screen of a terminal device according to any one of claims 2-9, characterized in that a light-emitting unit is arranged on the light-emitting board (3) except for the light-transmitting portion (2) 31) and a circuit (32) driving the light emitting unit (31), the light emitting unit (31) includes a red light unit (311), a green light unit (312), and a blue light unit (313); the light emitting board (31) 3) The light-emitting unit not provided on the above is a light-emitting unit of one color or two colors among the red light unit, the green light unit and the blue light unit. The display screen of a terminal device according to any one of claims 1-9, characterized in that the display area (1) includes a status bar (11) at the edge of the display area (1), the light transmission The part (2) is provided in the status bar (11). The display screen of a terminal device according to claim 11, wherein the status bar (11) is used for displaying icons, and the light-transmitting portion (2) is provided in the status bar (11) for displaying In the area of the icon. The display screen of a terminal device according to any one of claims 1-9, further comprising a light-blocking film (4), the light-blocking film (4) corresponding to the light-transmitting portion (2) The first through hole (41) is opened in the position. The display screen of the terminal device according to claim 13, wherein: The light-blocking film (4) is disposed below the light-emitting unit (31) of the display screen; or, The light blocking film (4) is provided between the light emitting unit (31) of the display screen and the circuit of the display screen; or, The light blocking film (4) is disposed between the multilayer circuits of the display screen; or, The light-blocking film (4) is disposed under the circuit of the display screen. The display screen of the terminal device according to claim 14, wherein: When the light blocking film (4) is disposed under the light emitting unit (31) of the display screen, or the light blocking film (4) is disposed between the light emitting unit (31) of the display screen and the display screen Between the circuits, the first through hole (41) is also used for wiring between the light emitting unit (31) and the circuit of the display screen; When the light blocking film (4) is disposed between the multilayer circuits of the display screen, the first through holes (41) are also used for wiring between the multilayer circuits of the display screen. The display screen of the terminal device according to claim 13, characterized in that the first through hole (41) includes a light-transmitting hole for collecting fingerprint characteristic images, and / or Light hole. The display screen of a terminal device according to claim 1, characterized in that the light-transmitting portion (2) includes at least two sub-light-transmitting portions (21), and the at least two sub-light-transmitting portions (21) are located in the Acyclic arrangement on the display area (1). The display screen of a terminal device according to claim 17, wherein in the non-periodically arranged sub-light transmitting portions (21), at least one row of the sub-light transmitting portions includes N sub-light transmitting portions (21), the separation distance between the i-th sub-light-transmitting portion (21) and the i + 1th sub-light-transmitting portion (21) is s / i; where N and i are integers, N≥2, N> i> 0. The display screen of the terminal device according to claim 18, characterized in that, when the interval distance s / i between the i-th sub-light transmitting portion (21) and the i + 1th sub-light transmitting portion (21) is less than a preset When the value is at least one of the i + 1th to N-1th sub-light-transmitting parts (21) is omitted. The display screen of a terminal device according to claim 17, characterized in that, among the non-periodically arranged sub-light transmitting portions (21), between any two adjacent sub-light transmitting portions (21) The separation distance is a random number. The display screen of a terminal device according to claim 17, wherein in the non-periodically arranged sub-light transmitting portions (21), at least two of the sub-light transmitting portions (21) have a size or The shapes are different. The display screen of a terminal device according to claim 21, characterized in that, among the non-periodically arranged sub-light transmitting portions (21), between any two adjacent sub-light transmitting portions (21) The separation distance is the same or different. The display screen of the terminal device according to claim 1, characterized in that the display screen further comprises a wave plate structure (9) corresponding to the light transmitting portion (2), the wave plate structure (9 ) Includes a light-shielding belt (91) and a light-transmitting belt (92), so that the light emitted by the target (6) above the light-transmitting portion (2) passes through the light-transmitting portion (2) and the light-transmitting belt ( 92), collected by the camera (5). The display screen of a terminal device according to claim 23, wherein the light-transmitting portion (2) includes at least two sub-light-transmitting portions (21); a plurality of the sub-light-transmitting portions (21) correspond to one The wave plate structure (9) is described. The display screen of a terminal device according to claim 23, wherein the light-transmitting portion (2) includes at least two sub-light-transmitting portions (21); each third sub-light-transmitting portion corresponds to one of the wave The strip structure (9), wherein the third sub-light transmission part is a sub-light transmission part (21) larger than a preset size threshold. The display screen of a terminal device according to any one of claims 23-25, characterized in that The wave plate structure (9) is arranged below the light emitting unit (31) of the display screen; or, The wave plate structure (9) is provided between the light emitting unit (31) of the display screen and the circuit of the display screen; or, The wave plate structure (9) is disposed between the multilayer circuits of the display screen; or, The wave plate structure (9) is arranged under the circuit of the display screen. The display screen of the terminal device according to claim 26, characterized in that When the wave plate structure (9) is disposed under the light emitting unit (31) of the display screen, or the wave plate structure (9) is disposed between the light emitting unit (31) of the display screen and the Between the circuits of the display screen, the light-transmitting tape (92) is also used for wiring between the light-emitting unit (31) and the circuit of the display screen; or, When the wave plate structure (9) is disposed between the multilayer circuits of the display screen, the light-transmitting belt (92) is also used for wiring between the multilayer circuits of the display screen. A terminal device, characterized in that the terminal device comprises the display screen according to any one of claims 1-27.

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