CN111107192A

CN111107192A - Display screen of terminal equipment and terminal equipment

Info

Publication number: CN111107192A
Application number: CN201910133125.4A
Authority: CN
Inventors: 王曙光; 杨光; 佟建
Original assignee: Vkansee Beijing Technology Co ltd
Current assignee: Vkansee Beijing Technology Co ltd
Priority date: 2018-10-29
Filing date: 2019-02-22
Publication date: 2020-05-05
Also published as: WO2020088410A1; CN111107193A; TW202022443A

Abstract

The embodiment of the invention discloses a display screen of terminal equipment, wherein a light-transmitting part is arranged in a display area of the display screen, and a camera is arranged below the light-transmitting part, so that light rays emitted by a target object above the light-transmitting part penetrate through the light-transmitting part and are collected by the camera. Adopt the display screen among the above-mentioned scheme, the light that sends on the target object of display screen top passes the printing opacity portion in the display screen, reachs the display screen below to can set up the camera in the below of display screen, need not to keep the bang region of display screen, and then make terminal equipment possess real comprehensive screen.

Description

Display screen of terminal equipment and terminal equipment

The present application claims priority from a chinese patent application filed by the chinese office of china on 29/10/2018 with application number 201811271636.4, the entire contents of which are incorporated herein by reference.

Technical Field

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

Background

The display screen of the terminal device, such as a mobile phone, a tablet computer, etc., is generally a bang screen, please refer to fig. 1, which includes a display area 82 and a bang area 81. The display area 82 is used for displaying a picture; the bang area 81 is provided with through

holes

83 and 84, and a camera and an earphone 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 wide definition of the ultra-high screen ratio terminal equipment design in the terminal equipment industry, namely, the front of the terminal equipment is the screen, the peripheral positions of the terminal equipment are designed in a frameless mode, and the screen ratio close to 100% is pursued. However, since the front camera of the terminal device must be installed on the front side of the terminal device, and inevitably occupies a part of the area of the display screen, the terminal device still cannot have a real full screen even though the developer reduces the bang area of the display screen as much as possible.

Disclosure of Invention

For solving above-mentioned problem, this application provides a terminal equipment's display screen to set up the camera in the below of display screen, need not to keep the bang region of display screen, thereby make terminal equipment possess real comprehensive screen.

In a first aspect, a light-transmitting portion is disposed in a display area of a display screen, and a camera is disposed below the light-transmitting portion, so that light emitted by a target above the light-transmitting portion passes through the light-transmitting portion and is collected by the camera.

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

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, and the camera includes a convex lens and an image sensor; and light rays emitted by one point on the target object respectively sequentially pass through the at least two sub light transmission parts and the convex lens, so that at least two light spots corresponding to the sub light transmission parts are formed on the image sensor, and the at least two light spots are overlapped.

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

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 number of the first sub light-transmitting parts is 1-9, and the diameter of the first sub light-transmitting part is 100-1000 microns; the number of the second sub light-transmitting parts is 8-10000, and the diameter of the second sub light-transmitting parts is 5-100 micrometers.

With reference to the first aspect and the possible implementations described above, in a fifth possible implementation of the first aspect, the second sub light-transmitting portions are symmetrically disposed with respect to the first sub light-transmitting portions.

With reference to the first aspect and the possible implementations described above, in a sixth possible implementation of the first aspect, the second sub light-transmitting portion is disposed around an outer 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 linearly arranged or netted 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, a light emitting unit and a circuit for driving the light emitting unit are arranged on a region of the light emitting panel except for the light transmitting portion, where the light emitting unit includes a red light unit, a green light unit, and a blue light unit; the light emitting unit that does not set up on the luminescent plate is the light emitting unit of a kind of colour or two kinds of colours in red light unit, green glow unit and the blue light unit.

With reference to the first aspect and the possible implementations described above, in a ninth possible implementation of the first aspect, the display area includes a status bar located at an edge of the display area, and the light-transmitting portion is disposed in the status bar.

With reference to the first aspect and the possible implementations described above, in a tenth possible implementation of the first aspect, the status bar is used to display an icon, and the light-transmitting portion is disposed in an area of the status bar where the icon is displayed.

With reference to the first aspect and the possible implementations of the first aspect, in an eleventh possible implementation of the first aspect, a light-blocking film is further disposed below the display area, and a first through hole is formed in the light-blocking film at a position corresponding to the light-transmitting portion.

With reference to the first aspect and the possible implementations described above, in a twelfth possible implementation 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, and a size of the first sub light-transmitting portion is larger than a size of the second sub light-transmitting portion; the diameter of the first sub light-transmitting part is larger than 100 micrometers, and the diameter of the second sub light-transmitting part is smaller than 500 micrometers.

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 hole for collecting a fingerprint feature image and/or a light hole for collecting a face feature image.

In a second aspect, a terminal device is provided, wherein the terminal device comprises any one of the display screens of the first aspect.

In the above technical solution, since the light-transmitting portion is disposed 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 lower portion of the light-transmitting portion. The camera is arranged below the light-transmitting part, and when images need to be collected, light rays emitted by a target object above the display screen penetrate through the light-transmitting part and are collected by the camera. Through such design, can set up the camera in the below of display screen, need not to keep the bang region of display screen to make terminal equipment possess real comprehensive screen.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.

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

FIG. 2 is a schematic front view of a display screen according to an embodiment of the present disclosure;

FIG. 3 is a schematic front view of a display screen according to a second embodiment of the present invention;

FIG. 4 is a schematic diagram of an optical path of an implementation of a display screen of the present application in use;

FIG. 5 shows two cases of the enlarged partial view A in the optical path diagram of FIG. 4;

fig. 6 is a schematic structural diagram of a third implementation of the display panel of the present application before a part of the light emitting units and circuits are omitted;

fig. 7 is a schematic structural diagram of a third implementation of the display panel of the present application after omitting a portion of the light emitting units and circuits;

FIG. 8 is a schematic side view of a third embodiment of a display panel according to the present application;

fig. 9 is a schematic structural diagram of a display panel according to the fourth embodiment of the present application before a part of light-emitting units and circuits are omitted;

fig. 10 is a schematic structural diagram of a display panel of the present application after omitting a part of light emitting units and circuits;

fig. 11 is a schematic structural diagram of a fifth implementation of the display panel of the present application after omitting a portion of the light emitting units and circuits;

fig. 12 is a schematic structural view of a sixth implementation of the display panel of the present application after omitting a part of the light emitting units and circuits;

fig. 13 is a schematic structural view of a seventh implementation of the display panel of the present application after omitting a part of the light emitting units and circuits;

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

FIG. 15 is two cases of a partial enlarged schematic view B in the optical path schematic view of FIG. 14;

fig. 16 is a schematic structural diagram of a display panel according to a ninth embodiment of the present application after omitting a part of light emitting units and circuits;

fig. 17 is a schematic diagram of contrast of an image of an object calculated by using a fast fourier transform algorithm when a plurality of sub light-transmitting portions having the same size are arranged in a matrix in an implementation of the display screen according to the present application;

fig. 18 is a schematic view of a point spread function of an image of one point on a target when a plurality of translucent portions having the same size are arranged in a matrix in a tenth implementation of the display panel of the present application;

fig. 19 is a diagram showing an image captured by a camera under a plurality of sub light-transmitting portions having the same size when the sub light-transmitting portions are arranged in a matrix in a tenth implementation of the display panel according to the present application;

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

FIG. 21 is a schematic front view of an eleventh implementation of a display panel of the present application;

FIG. 22 is a schematic front view of a twelfth implementation of a display screen according to the present application;

fig. 23 is a schematic diagram illustrating a contrast ratio of an image of a target object calculated by using a fast fourier transform algorithm when a plurality of sub light-transmitting portions with different sizes are arranged in a matching manner in an implementation manner of the display screen according to the present application;

fig. 24 is a schematic view of a point spread function of an image of a point on a target when a plurality of sub light-transmitting portions with different sizes are collocated and arranged according to an implementation manner of the display screen of the present application;

FIG. 25 is a schematic optical path diagram of a thirteen implementation of a display screen of the present application in use;

fig. 26 is a schematic front view of a fourteenth implementation of the display screen according to the present application.

Description of reference numerals:

FIG. 1: a bang area 81; a display area 82; through

holes

83, 84;

fig. 2 to 26: a display area 1; a status bar 11; a light-transmitting section 2; a sub light transmission section 21; the first sub light transmitting portion 211; the second sub light-transmitting portion 212; a light-emitting panel 3; a light emitting unit 31; a red light unit 311; a green light unit 312; a blue light unit 313; a circuit 32; a light-blocking film 4; a first through hole 41; a light hole combination 411 for collecting a face feature image; a light hole assembly 412 for collecting fingerprint feature images; a camera 5; a convex lens 51; an image sensor 52; a target 6; h, point 61;

spots

7, 71, 72, 73, 74.

Detailed Description

The following provides a detailed description of the embodiments of the present application. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 2 to 5, in a first embodiment of the present invention, a display screen of a terminal device is provided, a light-transmitting portion 2 is disposed in a display area 1 of the display screen, and a camera 5 is disposed below the light-transmitting portion 2, so that light emitted by an object 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 may be disposed at any position of the display screen, and may have any shape, which is not limited in this application. For example, referring to fig. 2, the light-transmitting portion may be disposed in the middle of the display area, and may have a circular shape. For another example, referring to fig. 3, the light-transmitting portion may be provided in a region near an edge of the upper portion of the display region, and may have a rectangular shape.

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 reaches the image sensor 52 after being refracted by the convex lens 51. When an image needs to be acquired, light rays a1 and a2 emitted from a point h 61 on the target object 6 above the light-transmitting portion 2 first pass through the light-transmitting portion 2 and then are refracted by the convex lens 51 to form a light spot 7 on the image sensor 52. A plurality of spots are formed on the image sensor by a plurality of points on the target correspondingly, and an image about the target can be finally formed through the processing of the image processor.

It should be noted that, in an ideal case, a light spot formed on the image sensor by light emitted from a point on the target is a light spot, as shown in fig. 5 (a). However, in practical applications, the focal length, image distance, object distance, and the like of the convex lens may vary, and the diffraction effect of light may not be ideal, so that the light may not be focused on the same point of the image sensor, and an unclear edge may exist around the light spot, resulting in a light spot larger than one light spot, as shown in fig. 5 (b). The light spots described in the present application may include either of the above two cases.

It should be understood that although the description of the display screen is presented with respect to the camera and the target object, the display screen itself does not include the camera and the target object.

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

Note that, as for the display panel, other structures may be included in addition to the light-emitting panel, the display unit provided on the light-emitting panel, and the circuit. For example, the display screen may further include a filter, a panel, and the like disposed over the light emitting unit. The panels, filters, etc. are here made of a material that is permeable to light. In this case, the panel, the filter, and the part of the light emitting panel where the light emitting unit region is not provided together constitute a light transmitting portion provided in the display panel in the present application.

Referring to fig. 6, the display panel generally includes a light-emitting panel 3, and the light-emitting panel 3 is made of a light-permeable material. The light emitting units 31 are arranged in an array on the light emitting panel 3, and these light emitting units 31 are opaque or partially opaque. The Light Emitting unit 31 may be an Organic Light-Emitting Diode (OLED). When the organic light emitting diode display is normally used, the organic light emitting diodes are controlled by the circuit to show different light emitting states and form display images. Each light-emitting unit or each group of light-emitting units may correspond to a pixel. The light emitting unit 31 herein 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 a red light unit, a green light unit, and a blue light unit, and each group of light emitting units corresponds to a pixel. For example, each group of light-emitting units may include a red light unit, two green light units, and a blue light unit, and each group of light-emitting units also corresponds to one pixel. In addition, the light emitting panel is provided with circuits for driving the light emitting units, which are also opaque.

In order to form the aforementioned light-transmitting portion, referring to fig. 7 and 8, in one implementation, the light-emitting unit and the circuit for driving the corresponding light-emitting unit may not be disposed on a partial region of the light-emitting panel 3. Thus, light above the display screen passes through the light-transmitting portion 2 to reach below the display screen, and is collected by the camera 5 disposed below the light-transmitting portion 2. The other areas of the light-emitting panel 3 are normally arranged with the light-emitting units 31 and the circuits 32 for driving the light-emitting units, so that the display panel can maintain a better display effect.

In order to reduce the influence of the light-transmitting portion on the display effect of the display screen, in one implementation, the light-transmitting portion may be provided at a position close to the edge of the display area, for example, in a status bar. It should be understood that the edge of the display area here may be the upper edge, the lower edge, the left edge, the right edge, or the like of the display area. For example, fig. 3 shows a display area 1 comprising a status bar 11 above. The status bar 11 is generally used to display icons or characters representing status information such as a network connection status, a battery status, and a lock status of the terminal. When the status bar 11 lacks one or several pixels, the effect on the use by the user is small, and therefore the light-transmitting portion 2 can be provided at the position of the status bar 11.

In another implementation, the light-transmitting portion may also be provided at the position of the icon in the status bar, i.e. in the area of the status bar where the icon is displayed.

For example, in the icon of the battery status, an image of one battery occupies 36 pixel points, and each pixel point corresponds to one light-emitting unit. Then, the light-emitting units corresponding to 8 of the 36 pixels and the corresponding circuits can be omitted. That is, originally, 36 light emitting units should be provided, and now 28 light emitting units are provided instead. The 8 omitted light emitting units may be 8 light emitting units arranged in series, or may be separated from the light emitting units which are not omitted, and the present application is not limited thereto.

Alternatively, for a display screen in which one pixel corresponds to one group of light emitting units, when the light emitting units are omitted to form a light-transmitting portion, only a part of the light emitting units and corresponding circuits in one group of light emitting units may be omitted. For example, the omitted light emitting units may be light emitting units of the same color; alternatively, the omitted light emitting units may be light emitting units of several specific colors, such that light emitting units that are not omitted in a group of light emitting units are light emitting units of the same color.

For example, in the icon of the battery status, an image of one battery occupies 36 pixel points, and each pixel point corresponds to four light-emitting units: 2 red, 1 blue and 1 green, as shown in fig. 9. Then, the light emitting unit of the same color corresponding to each pixel point, for example, the green light unit, may be omitted as shown in fig. 10. Furthermore, it is also possible to omit both the green and red light units, leaving only the blue light unit. Thus, each pixel point of the 36 pixels can still be displayed, and only the colors that can be displayed are reduced compared with the original colors.

In this way, on the one hand, the meaning indicated by the icon in the status bar is not affected, and on the other hand, the influence of the light-transmitting part on the display effect of the display screen is further reduced.

It should be understood that no matter where the light-transmitting region is disposed in the display region, the light-emitting units not disposed on the light-emitting plate may be of the same color, or of the same colors, so as to reduce the influence on the display effect of the display screen.

Since the light emitting panel itself is light permeable, while the light emitting unit and the circuitry sometimes do not completely cover the light permeable area on the whole light emitting panel, in another implementation, one or several light permeable areas may be determined from the areas of the light emitting panel not covered by the light emitting unit and the circuitry (e.g. the edge area of the light emitting panel) to form the aforementioned light permeable portions.

When the region where the light emitting unit is not provided is continuous, the size of the formed light transmitting portion is large, as shown with reference to fig. 11. When the region where the light emitting unit is not provided is partitioned by the region where the light emitting unit 31 is provided, a plurality of sub light transmitting portions are formed as shown in fig. 10, 12 to 14. That is, the light-transmitting portion may include at least two sub light-transmitting portions.

At this time, light rays emitted from a point on the target object above the light transmission parts respectively pass through the at least two sub light transmission parts and then pass through the convex lens, and finally at least two light spots corresponding to the sub light transmission parts are formed on the image sensor and are overlapped.

For example, referring to fig. 14, the light transmission part 2 includes two sub light transmission parts 21. Light rays a3 and a4 emitted from the h point 61 on the object 6 pass through one of the sub light transmission parts 21, and form a light spot 71 on the image sensor 52 after being refracted by the convex lens 51; the light rays a5 and a6 pass through the other sub light-transmitting portion 21, and form a light spot 72 on the image sensor 52 after being refracted by the convex lens 51.

Similarly to the above case, in an ideal case, the light emitted from a point on the target passes through a sub light-transmitting portion, and the light spot formed on the image sensor is a light spot. However, in practical applications, the focal length, image distance, or object distance of the convex lens may vary, and the diffraction effect of light may cause the spot to be formed larger than one spot. When the light emitted from the same point passes through the two sub light-transmitting portions, the two

light spots

71 and 72 formed at the same point should ideally overlap completely, as shown in fig. 15 (a). In practice, however, the two

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, and may include a complete overlap and a partial overlap.

By adopting the technical scheme, when one light transmission part comprises a plurality of sub light transmission parts, the light inlet quantity of the light transmission part is improved, the light intensity is improved, the light diffraction is reduced, and the resolution of the image collected by the camera is improved.

Alternatively, 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 sub light-transmitting portion. In this way, light emitted from one point on the target object sequentially passes through at least two sub light transmission parts and the convex lens corresponding to the sub light transmission parts respectively, then at least two light spots corresponding to the sub light transmission parts are formed on the image sensor, and the at least two light spots are overlapped.

For example, referring to fig. 25, the light-transmitting portion 2 includes two sub light-transmitting portions 21, the camera 5 includes two convex lenses 51 and an image sensor 52, and the two convex lenses 51 correspond to the two sub light-transmitting portions 21 one by one. Light rays a7 and a8 emitted from the h point 61 on the object 6 pass through one of the sub light-transmitting portions 21, and form a light spot 73 on the image sensor 52 after being refracted by the corresponding convex lens 51; the light rays a9 and a10 pass through the other sub light-transmitting portion 21, and form a light spot 74 on the image sensor 52 after being refracted by the corresponding convex lens 51. Spots 73 and 74 formed here may overlap completely or partially, similarly to the case of

spots

71 and 72 described above. It should be noted that in this case, the two convex lenses need to be matched with each other and inclined at a certain angle, so that the two light spots on the image sensor overlap.

Alternatively, the aforementioned at least two sub light-transmitting portions may be arranged in a straight line on the display region, as shown in fig. 12, and the light-emitting unit 31 and the circuit 32 on the light-emitting panel 3 partition a region where the light-emitting unit and the circuit are not provided to form a plurality of sub light-transmitting portions. Optionally, the 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 be arranged in other shapes, such as a circle, a rectangle, a regular polygon, and the like, as shown in fig. 16.

In an implementation manner of forming the light-transmitting portion by omitting the light-emitting unit, the number of omitted light-emitting units corresponding to each sub light-transmitting portion may be one or more, and the present application is not limited thereto. The shape of the sub light transmission portion may be a circle, a rectangle, a regular polygon, or the like, which is not limited in the present application.

As described above, referring to fig. 7, since the light emitting panel 3 is made of a material that can transmit light, there may still be some irregularities on the light emitting panel 3 that can transmit light, in addition to the light emitting unit 31 that does not transmit light, the circuit 32, and the light transmitting portion 2 formed by omitting the light emitting unit and the circuit. Some components in the display screen, such as the light emitting unit, may emit light through the light-transmitting portion or through the irregular light-transmitting area to reach the image collector, so as to form a light spot on the image sensor, thereby affecting parameters such as the definition of the image of the target object. In addition, external light above the display screen may also pass through these irregular light-permeable areas through reflection, refraction, and the like, to form light spots on the image sensor. The light spots are overlapped with light spots formed by light rays emitted by the target object, so that interference is generated on the light spots formed by the light rays emitted by the target object, and the definition of images finally acquired by the image sensor is reduced.

In order to solve this problem, optionally, referring to fig. 8, a light-blocking film 4 may be further disposed under the display area of the display screen, and a first through hole 41 is opened on the light-blocking film 4 at a position corresponding to the light-transmitting portion 2. Through setting up light blocking film 4, can block some light that can produce the interference to the light that the target object sent, some parts in the display screen promptly, for example luminescence unit, the partial light that sends to and the partial light in the environment that the outside target object of display screen was located, and then promote the quality of the image about the target object that obtains.

The shape of the first through hole 41 may be the same as or different from the shape of the light transmitting portion 2; the first through hole may have the same size as the light-transmitting portion or may have a different size from the light-transmitting portion. When the light transmitting portion 2 includes a plurality of sub light transmitting portions 21, a plurality of first through holes corresponding to the sub light transmitting portions one by one may be formed in the light blocking film 4.

In addition, the first through hole on the light-resisting film can also play a role in standardizing the shape and the size of the light-transmitting part and standardizing the light-transmitting part. For example, the light transmissive portion in the display screen may be rectangular with dimensions of 120 microns by 140 microns, whereas a circular, 100 micron diameter light transmissive area is desired for practical applications. It is relatively difficult to achieve this by changing the design of the light emitting panel, the light emitting unit or the circuitry. In the present invention, the first through hole at the position corresponding to the light transmitting portion of the light-blocking film may be a circular through hole having 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 pass from one side to the other. The first through hole may be a conventional through hole, which may also be filled with a material that is permeable to light, and is not limited in this application.

The terminal equipment adopting the display screen can be applied to biological characteristic image collection, such as fingerprint characteristic images or human face characteristic images. The requirements for acquiring a biometric image may differ for different objects. For example, generally, the definition of the fingerprint image is higher than that of the face image, so that a hole with a smaller diameter is required for collecting the fingerprint image, and a hole with a larger diameter can be used for collecting the face image. As described above, it is technically more convenient to indirectly regulate the shape and size of the light-transmitting portion using the first through hole, compared to directly regulating the shape and size of the light-transmitting portion. Therefore, the first through holes with different sizes can be arranged on the light blocking film, one part is a light hole used for collecting fingerprint characteristic images, and the other part is a light hole used for collecting human face characteristic images, so that biological characteristic images of various different types can be collected, and the applicability of the terminal device is widened.

It should be noted that, among all the first through holes, the light hole for collecting the fingerprint feature image may be one light hole, or a combination of light holes formed by a plurality of light holes with the same or different sizes. Similarly, the light hole for acquiring the facial feature image may be one light hole, or a combination of light holes with the same or different sizes. For example, referring to fig. 26, the dotted line portion is the position of the first through hole on the light-blocking film corresponding to the display region 1. 411 represents a light hole combination for collecting a face feature image, and the light hole combination comprises a first through hole with a relatively large size and 6 first through holes with a relatively small size; 412 indicates a combination of light-transmissive holes for capturing an image of a fingerprint feature, including 16 first through holes of relatively small size.

Optionally, the first through holes with different purposes may respectively correspond to different image sensors, or may share one 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 a plurality of first through holes with different sizes are required to be arranged on the light-blocking film, the light-blocking film can be realized by adopting a photoetching process. The photolithography process mainly refers to a technique of transferring a pattern on a photolithography mask (mask) to a substrate by means of a photoresist under the action of light. Generally, if a first via of one dimension is formed in the light-blocking film, a photolithographic mask is typically used. If a plurality of first through holes with different sizes need to be formed, multiple layers of photoetching masks are respectively adopted for completing the forming. In the scheme of the application, when the plurality of first through holes with different diameters are formed, a layer of photoetching mask is adopted. Namely, one layer of the photoetching mask has the function of simultaneously forming a plurality of first through holes with different diameters, so that the preparation cost is saved.

When the light-transmitting portion includes a plurality of sub light-transmitting portions, the contrast of the formed image fluctuates due to the diffraction action of light. Fig. 17 is a schematic diagram of the contrast of an object image calculated by a Fast Fourier Transform (FFT) algorithm when a plurality of sub light-transmitting portions having 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 object, i.e., the object distance, is a certain fixed distance, the contrast of the image does not always tend to decrease as the distance of the line pairs (line pairs) in the target object increases. Initially, as the line-pair distance increases, the contrast of the image gradually decreases; then, as the line-pair distance further increases, the contrast of the image conversely rises; then, as the distance between the line pairs increases, the contrast of the image gradually decreases and then increases. That is, as the line pair distance increases, the contrast of the image changes periodically, where each period is not exactly the same and each contrast rise is reduced in magnitude from the previous one.

Referring to fig. 18, fig. 18 is a schematic diagram of a Point Spread Function (PSF) of an image of one point on a target when a plurality of sub light-transmitting portions with the same size are arranged in a matrix. The point spread function describes the response of an imaging system to an object, i.e. describes the irradiance distribution of a point after passing through the imaging system. As can be seen from the figure, due to the diffraction effect, a plurality of secondary peaks exist at the periphery of one main peak, and the peak value of the secondary peak is high, which affects the contrast of the target object image to some extent. When secondary peaks formed by two different points on the target are superimposed on each other, the peak value of the secondary peak formed by the superposition may be higher, and the contrast may be reduced extremely, which can explain why the contrast is related to the distance of the line pair on the target.

Fig. 19 is a view showing a contrast effect of an image captured by a camera under a plurality of sub light transmission portions having the same size arranged in a matrix. Fig. 20 is a partially enlarged view of the region C in fig. 19. In fig. 20, the upper numerical value indicates the lower pair distance, and the larger the numerical 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 space between the one black line and the next black line. As can be seen from fig. 20, the contrast of the image with the line-to-line distance of about 6 is high, the contrast of the image with the line-to-line distance of about 8 is low, the contrast of the image with the line-to-line distance of about 10-12 is high, and the contrast of the image with the line-to-line distance of about 14-16 is low, and changes periodically as a whole, which is consistent with the contrast trend calculated in fig. 17.

In order to reduce the influence of diffraction effects on the image contrast, in an embodiment of the present application, an inventive concept is provided that the dimensions, i.e. sizes, of the sub-light-transmitting portions are set to be different.

Here, when the sub light-transmitting portion is rectangular, the size thereof may refer to the length and width of the rectangle. When the light transmitting sub-portion is circular, the size thereof may refer to the diameter or radius of the circle. When the sub light-transmitting portion is a regular polygon, the size thereof may refer to the side length of the regular polygon, or the like. Under different conditions, the sub light-transmitting parts with the same or different shapes can be matched and arranged, and the sub light-transmitting parts with the same or different sizes can be matched and arranged.

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 first sub light-transmitting portion is larger in size than the second sub light-transmitting portion. For example, referring to the example of fig. 21 and 22, each of first sub light-transmitting portion 211 and second sub light-transmitting portion 212 is circular, and first sub light-transmitting portion 211 has a larger diameter than second sub light-transmitting portion 212. Optionally, the diameter of the first sub light-transmitting portion 211 is greater than 100 micrometers, and the diameter of the second sub light-transmitting portion 212 is less than 500 micrometers.

Optionally, the number of the second sub light-transmitting portions is more than or equal to 2, and the second sub light-transmitting portions are even and symmetrically arranged on the periphery of the first sub light-transmitting portion. For example, referring 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 symmetrically disposed with respect to the first sub light-transmitting portion. In addition, if the first sub light-transmitting portion and the second sub light-transmitting portion of the above arrangement are regarded as one arrangement combination, the light-transmitting portion may include a plurality of similar arrangement combinations for one display screen.

Optionally, the second sub light-transmitting portion is disposed around the periphery of the first sub light-transmitting portion. Here, the present application does not limit the surrounding manner of the second sub light transmission portions and the number of the second sub light transmission portions, and does not limit the arrangement manner of the first sub light transmission portions surrounded inside the second sub light transmission portions and the number of the first sub light transmission portions. For example, referring to the arrangement shown in fig. 22, the light-transmitting portion includes two first sub light-transmitting portions 211 and twenty-four second sub light-transmitting portions 212, the two first sub light-transmitting portions 211 are surrounded by the twenty-four second sub light-transmitting portions 212, and the twenty-four second sub light-transmitting portions are arranged in a rectangular shape.

Optionally, the light-transmitting portion may include 1-9 first sub light-transmitting portions with a diameter of 100-1000 μm; alternatively, the light-transmitting portion may include 8 to 10000 second sub light-transmitting portions having a diameter of 5 to 100 micrometers.

Optionally, when a light-blocking film is further disposed under the display area of the display screen, and a first through hole is disposed at a position on the light-blocking film corresponding to the light-transmitting portion, the shape and size of the light-transmitting portion can be standardized indirectly by setting the shape and size of the first through hole. Namely, a plurality of first through holes are arranged on the light-blocking film, and the first through holes comprise 1-9 large holes, and the diameter of each large hole is 100-1000 microns; it can also comprise 8-10000 pores with diameter of 5-100 microns.

By such a collocation, the influence of diffraction effect on image contrast can be reduced to a certain extent. Please refer to fig. 23 and fig. 24. Fig. 23 is a schematic diagram of the contrast of the target image calculated by using a Fast Fourier Transform (FFT) algorithm when a plurality of sub light-transmitting portions with different sizes are arranged in a matching manner. It can be seen that, compared with fig. 17, the contrast ratio is improved to a certain extent, especially the contrast ratio at the original trough is improved to a larger extent, and the fluctuation range of the contrast ratio is obviously reduced. Fig. 24 is a schematic diagram of a point spread function of an image of one point on a target when a plurality of sub light-transmitting portions with different sizes are arranged in a matching manner. It can be seen that the secondary peak values were all significantly reduced in the periphery of the main peak as compared to fig. 18.

In a second embodiment of the present application, there is provided a terminal device, comprising any one of the display screens of the first embodiment. The terminal device may further include a camera 5, and the camera 5 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, the terminal device accordingly has the beneficial effects of the display screen in the first embodiment, and details are not repeated here.

It should be understood that the implementations in the various embodiments of the present description may be combined as long as they are not logically contradictory. Like parts of the various embodiments are referred to one another. The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention.

Claims

1. The display screen of the terminal equipment is characterized in that a light-transmitting part (2) is arranged in a display area (1) of the display screen, and a camera (5) is arranged below the light-transmitting part (2), so that light rays emitted by a target object (6) above the light-transmitting part (2) penetrate through the light-transmitting part (2) and are collected by the camera (5).

2. A display of a terminal device according to claim 1, wherein the display area (1) comprises a light emitting panel (3), and no light emitting unit and no circuit for driving the light emitting unit are provided on a partial area of the light emitting panel (3) to form the light transmitting portion (2).

3. The display of the terminal device according to claim 1, wherein the light-transmitting portion (2) comprises at least two sub light-transmitting portions (21), and the camera (5) comprises a convex lens (51) and an image sensor (52); the light emitted by one point on the target object (6) sequentially passes through the at least two sub light transmission parts (21) and the convex lens (51) respectively, at least two light spots corresponding to the sub light transmission parts (21) are formed on the image sensor (52), and the at least two light spots are overlapped.

4. A display screen of a terminal device according to claim 3, characterized in that the at least two sub-light-transmitting portions (21) are of different sizes.

5. The display of a terminal device according to claim 4, wherein the at least two sub light-transmissive portions (21) comprise a first sub light-transmissive portion (211) and a second sub light-transmissive portion (212); the number of the first sub light-transmitting parts (211) is 1-9, and the diameter of the first sub light-transmitting parts (211) is 100-1000 microns; the number of the second sub light-transmitting parts (212) is 8-10000, and the diameter of the second sub light-transmitting parts (212) is 5-100 micrometers.

6. The display of the terminal device according to claim 4, wherein the at least two sub light-transmitting portions (21) comprise a first sub light-transmitting portion (211) and a second sub light-transmitting portion (212), the first sub light-transmitting portion (211) being larger in size than the second sub light-transmitting portion (212); the diameter of the first sub light-transmitting part (211) is larger than 100 micrometers, and the diameter of the second sub light-transmitting part (212) is smaller than 500 micrometers.

7. The display of a terminal device according to claim 6, wherein the second sub light-transmitting portion (212) is symmetrically arranged with respect to the first sub light-transmitting portion (211).

8. The display of a terminal device according to claim 6, wherein the second sub light-transmitting portion (212) is circumferentially disposed around the outer periphery of the first sub light-transmitting portion (211).

9. A display screen of a terminal device according to claim 3, wherein the at least two sub-light-transmitting portions (21) are arranged in a straight line or in a net shape on the display area (1).

10. A display of a terminal device according to any of claims 2 to 9, characterized in that a light emitting unit (31) and a circuit (32) for driving the light emitting unit (31) are arranged on the light emitting panel (3) in a region other than said light transmitting portion (2), said light emitting unit (31) comprising a red light unit (311), a green light unit (312) and a blue light unit (313); the light-emitting unit that does not set up on luminescent plate (3) is the light-emitting unit of a kind of colour or two kinds of colours in red light unit, green glow unit and the blue light unit.

11. A display of a terminal device according to any of claims 1-9, characterized in that the display area (1) comprises a status bar (11) at the edge of the display area (1), the light-transmissive part (2) being arranged in the status bar (11).

12. The display of a terminal device according to claim 11, wherein the status bar (11) is adapted to display an icon, and the light-transmissive portion (2) is arranged in an area of the status bar (11) adapted to display the icon.

13. A display screen of a terminal device according to any one of claims 1-9, wherein a light-blocking film (4) is further provided under the display area (1), and a first through hole (41) is formed in the light-blocking film (4) at a position corresponding to the light-transmitting portion (2).

14. The display screen of the terminal device according to claim 13, wherein the first through hole (41) comprises a light hole for collecting a fingerprint feature image and/or a light hole for collecting a human face feature image.

15. A terminal device, characterized in that it comprises a display screen according to any one of claims 1-14.