CN111384088B

CN111384088B - Display screen, preparation method of display screen and electronic equipment

Info

Publication number: CN111384088B
Application number: CN201811639389.9A
Authority: CN
Inventors: 卞青芳
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-12-29
Filing date: 2018-12-29
Publication date: 2023-04-28
Anticipated expiration: 2038-12-29
Also published as: CN111384088A

Abstract

The disclosure relates to a display screen, a preparation method of the display screen and electronic equipment, wherein the display screen comprises a first area and a second area in the horizontal direction, and the display screen comprises: the first electrode, the second film and the second electrode are sequentially overlapped on the first film; a driving element is arranged in a first film layer of a first area of the display screen, and a driving element is not arranged in a second area of the display screen; a light-emitting element is arranged in a second film layer of a second area of the display screen, and a driving element is used for driving the light-emitting element of the second area to emit light; the first film layer further comprises a third electrode, the light-emitting element is electrically connected with the first electrode and the second electrode respectively, the first electrode is electrically connected with the third electrode, and the third electrode is electrically connected with the driving element. According to the embodiment of the disclosure, the light transmission effect of the second area can be increased, lighting of devices positioned under the display screen is facilitated, and the display effect of the second area can be realized.

Description

Display screen, preparation method of display screen and electronic equipment

Technical Field

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

Background

Along with the development of electronic equipment technology, the area of a display screen of a mobile terminal is larger and larger, the space of other devices such as a camera of the mobile terminal can be extruded, the optical devices such as the camera can be shielded, in the related technology, holes can be formed in the position of the display screen opposite to the camera so as to solve the problem that the display screen shields the camera, but the display area of the screen can be reduced due to the holes of the display screen, and the mechanical strength of the mobile terminal is reduced.

Disclosure of Invention

In order to overcome the problems in the related art, the present disclosure provides a display screen, a method for manufacturing the display screen, and an electronic device.

According to a first aspect of embodiments of the present disclosure, there is provided a display screen including a first region and a second region in a horizontal direction, the display screen including in a thickness direction:

the first electrode, the second film and the second electrode are sequentially overlapped on the first film;

a driving element is arranged in a first film layer positioned in a first area of the display screen, and a driving element is not arranged in a second area of the display screen;

a light-emitting element is arranged in a second film layer positioned in a second area of the display screen;

the first film layer further comprises a third electrode, the light-emitting element arranged in the second area is electrically connected with the first electrode and the second electrode respectively, the first electrode is electrically connected with the third electrode, and the third electrode is electrically connected with the driving element.

In one possible implementation of the present invention,

a light-emitting element is arranged in a second film layer positioned in the first area of the display screen;

a fourth electrode is arranged on the first film layer positioned in the first area of the display screen;

the light-emitting element arranged in the first area is electrically connected with the fourth electrode and the second electrode respectively, and the fourth electrode is electrically connected with the driving element.

In one possible implementation, the fourth electrode is spaced apart from the first electrode.

In one possible implementation of the present invention,

a plurality of light-emitting elements are arranged in a second film layer positioned in the first area of the display screen;

a plurality of light-emitting elements are arranged in a second film layer positioned in a second area of the display screen;

the light emitting elements located in the first region are divided into a plurality of first groups, each first group including at least one light emitting element;

the light emitting elements located in the second region are divided into a plurality of second groups, each second group including at least one light emitting element;

each first group corresponds to one second group one by one;

the light emitting elements in each first group and the light emitting elements in the second group corresponding to the first group are driven to emit light by the same driving element.

In one possible implementation, the first electrodes electrically connected to each of the light emitting elements disposed in the second region are separated from each other.

In one possible implementation, the driving element does not drive a light emitting element disposed at the first region of the display screen.

In one possible implementation of the present invention,

the plurality of light emitting elements are divided into a plurality of second groups, each second group comprising at least one light emitting element;

the light emitting elements in each second group are driven to emit light by the same driving element.

In one possible implementation, the light emitting elements in each first group are the same in emission color and/or the light emitting elements in each second group are the same in emission color.

In one possible implementation, the light emitting elements in each first group are different or partially identical in light emission color to each other and/or the light emitting elements in each second group are different or partially identical in light emission color to each other.

In one possible implementation, the light emitting elements in each first group are arranged in any one of the following forms: a line, fold line, curve, or array, and/or the light emitting elements in each second group are arranged in any of the following forms: straight lines, broken lines, curved lines, or arrays.

In one possible implementation, the material of the first film layer located in the first region of the display screen is different from the material of the first film layer located in the second region of the display screen.

In one possible implementation, the thickness of the first film layer in the first region of the display screen is different from the thickness of the first film layer in the second region of the display screen.

In one possible implementation, the first film layer is perforated at a location of the second region of the display screen.

According to a second aspect of embodiments of the present disclosure, there is provided a method for manufacturing a display screen, the method being used for manufacturing the display screen described above,

the method comprises the following steps:

depositing a metal layer on the target layer;

photoetching and etching the metal layer to form source electrode metal and drain electrode metal of the driving element;

depositing a layer of conductive material over the source metal and the drain metal;

carrying out photoetching and etching treatment on the conductive material layer to form a third electrode;

the source metal is separated from the drain metal, and the third electrode is electrically connected with the source metal or the drain metal.

According to a third aspect of embodiments of the present disclosure, there is provided an electronic device comprising:

the display screen described above, and/or

The display screen prepared by the method.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: according to the embodiment of the disclosure, the driving element is arranged in the first film layer located in the first area of the display screen, the driving element is not arranged in the second area of the display screen, the light emitting element is arranged in the second film layer located in the second area of the display screen, and the light emitting element is connected with the driving element through the first electrode and the third electrode respectively, so that the driving element located in the first area can drive the light emitting element located in the second area to emit light. From this need not to set up driving element in the second region, both can greatly increased the printing opacity effect in second region, be favorable to being located the device daylighting under the display screen, need not to open pores on the display screen, can realize the display effect in second region again, and need not extra drive signal line and driving element drive luminescent element and give out light, effectively reduce the device redundancy of display screen.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a cross-sectional view of a display screen in a thickness direction, according to an exemplary embodiment.

Fig. 2 is a cross-sectional view of a display screen in a thickness direction, according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 4 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 5 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 6 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 7 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 8 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 9 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 10 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 11 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment.

Fig. 12 is a flowchart illustrating a method of manufacturing a display screen according to an exemplary embodiment.

Fig. 13 is a cross-sectional view of a display screen in a thickness direction, according to an exemplary embodiment.

Fig. 14 is a schematic diagram of an electronic device, according to an example embodiment.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

Fig. 1 is a cross-sectional view of a display screen in a thickness direction, according to an exemplary embodiment. As shown in fig. 1, the display screen includes a first region 101 and a second region 102 in a horizontal direction, and the display screen includes in a thickness direction:

a first film layer 103, and a first electrode 105, a second film layer 104, and a second electrode 106 sequentially stacked on the first film layer 103;

a driving element 1031 is arranged in the first film layer 103 positioned in the first area 101 of the display screen, and the driving element 1031 is not arranged in the second area 102 of the display screen;

a light-emitting element 1041 is disposed in the second film layer 104 located in the second region 102 of the display screen;

the first film 103 further includes a third electrode 107, the light emitting element 1041 disposed in the second region 102 is electrically connected to the first electrode 105 and the second electrode 106, the first electrode 105 is electrically connected to the third electrode 107, and the third electrode 107 is electrically connected to the driving element 1031.

In the embodiment of the present disclosure, the display screen may be an OLED (Organic Light-Emitting Diode) display screen; the driving element may be a TFT (Thin Film Transistor ). The material of the light emitting element may include a light emitting material such as a small molecule organic light emitting material or a high polymer light emitting material.

In embodiments of the present disclosure, the first film layer and the second film layer may each be made of a material having a certain light transmittance (e.g., a material having a light transmittance of greater than 80%), wherein the light transmittance may be used to represent the ability of light to pass through the medium. Thus, the gaps between the display screen devices can transmit light, so that the display screen has a light transmission effect.

For example, the first film layer may be a composite layer, and the material used may include an inorganic material such as silicon nitride, silicon oxide, or the like, and an organic material such as polyimide. The material of the second film layer may include an organic material such as polyimide.

In the embodiment of the present disclosure, the first electrode, the second electrode, and the third electrode may be made of a transparent material to further increase the light transmission effect of the display screen. The "transparent" in the embodiments of the present disclosure does not limit the light transmittance to 100%, but has a certain light transmittance, and can achieve the light transmittance effect. For example, the transparent material may include a transparent conductive oxide such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO), and for another example, the transparent material may include a metal material such as metallic silver, silver magnesium alloy, etc., wherein the metallic silver, silver magnesium alloy may be made to have a small thickness (for example, may be 1 to 10 nanometers) so as to have a certain light transmittance (for example, light transmittance is greater than 80%). Note that the materials of the first electrode, the second electrode, and the third electrode are not limited in this disclosure, as long as the materials are transparent conductive materials.

It should be noted that the descriptions of the materials of the components of the display screen in this disclosure are merely illustrative and not limiting, and those skilled in the art may select any other suitable materials according to the needs, and the materials of the display screen are not specifically limited in this disclosure.

As an example of the present embodiment, as shown in fig. 1, the display screen may include, in the thickness direction: the first film layer 103, the first electrode 105, the second film layer 104 and the second electrode 106, wherein the first electrode 105 may be superimposed on the first film layer 103, the second film layer 104 may be superimposed on the first electrode 105, and the second electrode 106 may be superimposed on the second film layer 104. The driving element 1031 may be provided in the first film layer 103 located in the first region 101 of the display screen, and the light emitting element 1041 may be provided in the second film layer 104 located in the second region 102 of the display screen, and the driving element 1031 may not be provided in the second region 102 of the display screen. A third electrode 107 may be disposed in the first film 103, the third electrode 107 may span the first region 101 and the second region 102, the light emitting element 1041 may be electrically connected to the first electrode 105 and the second electrode 106, respectively, the first electrode 105 may be electrically connected to the third electrode 107, for example, through a conductive contact hole between the first electrode 105 and the third electrode 107, the third electrode 107 may be electrically connected to the driving element 1031, for example, the third electrode 107 may be electrically connected to a drain electrode of a transistor in the driving element 1031, so that the driving element 1031 may drive the light emitting element 1041 to emit light.

According to the embodiment of the disclosure, the driving element is arranged in the first film layer located in the first area of the display screen, the driving element is not arranged in the second area of the display screen, the light emitting element is arranged in the second film layer located in the second area of the display screen, and the light emitting element is connected with the driving element through the first electrode and the third electrode respectively, so that the driving element located in the first area can drive the light emitting element located in the second area to emit light. From this need not to set up driving element in the second region, both can greatly increased the printing opacity effect in second region, be favorable to being located the device daylighting under the display screen, need not to open pores on the display screen, can realize the display effect in second region again, and need not extra drive signal line and driving element drive luminescent element and give out light, effectively reduce the device redundancy of display screen.

In one possible implementation, the display screen may include one or more first regions, and one or more second regions, where the first regions may be the same or different in area from the second regions. The shape of the first and second regions may include any shape such as a circle, a rectangle, a triangle, a polygon, etc., and is not limited herein. The positional relationship of the first region and the second region may include any one or more of: the second region is located at an edge of the first region, the first region surrounds the second region, or the second region surrounds the first region.

In one possible implementation, the shape of the light emitting element may include any shape such as a circle, a rectangle, a triangle, a polygon, and the like, without limitation.

In one possible implementation, the first electrode may be an anode and the second electrode may be a cathode. The third electrode may be a connection line between the first electrode and the driving element.

Fig. 2 is a cross-sectional view of a display screen in a thickness direction, according to an exemplary embodiment. As shown in fig. 2, the difference between fig. 2 and fig. 1 is that a light emitting element 1041 is disposed in the second film layer 104 located in the first area 101 of the display screen; a fourth electrode 108 is arranged on the first film layer 103 positioned in the first area 101 of the display screen; the light emitting element 1041 disposed in the first region 101 is electrically connected to the fourth electrode 108 and the second electrode 106, and the fourth electrode 108 is electrically connected to the driving element 1031.

As an example of the present embodiment, the fourth electrode 108 may be an anode, and the second electrode 106 may be a cathode. Wherein the fourth electrode 108 may be superimposed on the first film layer 103, the second film layer 104 may be superimposed on the fourth electrode 108, and the second electrode 106 may be superimposed on the second film layer 104. A light emitting element 1041 may be disposed in the second film 104 in the first region 101 of the display screen, and the light emitting element 1041 may be electrically connected to the fourth electrode 108 and the second electrode 106, respectively, and the fourth electrode 108 may be electrically connected to the driving element 1031 (e.g., the fourth electrode 108 may be electrically connected to a drain electrode of a transistor in the driving element 1031). In this way, the embodiments of the present disclosure can simultaneously drive the light emitting element disposed in the first region and the light emitting element disposed in the second region of the display screen to emit light by the driving element disposed in the first region.

In one possible implementation, the fourth electrode may be spaced apart from the first electrode, so that a gap between the fourth electrode and the first electrode may transmit light, and the light transmission effect of the display screen may be further increased.

In one possible implementation, the fourth electrode may also be electrically connected to the first electrode.

As an example of the present embodiment, a plurality of light emitting elements are provided in the second film layer located in the first region of the display screen; a plurality of light-emitting elements are arranged in a second film layer positioned in a second area of the display screen; the light emitting elements located in the first region are divided into a plurality of first groups, each first group including at least one light emitting element; the light emitting elements located in the second region are divided into a plurality of second groups, each second group including at least one light emitting element; each first group corresponds to one second group one by one; the light emitting elements in each first group and the light emitting elements in the second group corresponding to the first group are driven to emit light by the same driving element.

For example, fig. 3 and 4 are schematic diagrams illustrating a display screen in a horizontal direction according to an exemplary embodiment. As shown in fig. 3 and 4, each first group 20 may include one light emitting element 1041, and the light emitting element 1041 in each first group 20 may be electrically connected to one driving element 1031 through the fourth electrode 108. Each second group 30 may include a plurality of light emitting elements 1041, and the number of light emitting elements 1041 of each second group 30 may be the same. In each of the second groups 30, the light emitting elements 1041 may be electrically connected to a same first electrode (not shown), the first electrode may be electrically connected to a third electrode 107, and the third electrode 107 may be electrically connected to a driving element 1031. Each first group 20 may be in one-to-one correspondence with one second group 30, and the light emitting elements 1041 in each first group 20, and the light emitting elements 1041 in the second group 30 in one-to-one correspondence with the first group 20 are driven to emit light by the same driving element 1031.

For example, as shown in fig. 3, the light emitting elements 1041 of each first group 20 and the light emitting elements 1041 of the second group 30 corresponding to the first group 20 may be arranged in a straight line in a lateral direction of the display screen horizontal direction, and the light emitting elements 1041 of the first and second regions may be arranged in a matrix.

For example, as shown in fig. 4, the light emitting elements 1041 of each first group 20 and the light emitting elements 1041 of the second group 30 corresponding to the first group 20 may be arranged in a straight line in the longitudinal direction of the display screen in the horizontal direction, and the light emitting elements 1041 of the first and second regions may be arranged in a matrix.

For example, fig. 5 and 6 are schematic diagrams illustrating a display screen in a horizontal orientation according to an exemplary embodiment. As shown in fig. 5 and 6, each first group 20 may include one light emitting element 1041, and the light emitting element 1041 in each first group 20 may be electrically connected to one driving element 1031 through the fourth electrode 108. Each of the second groups 30 may include a plurality of light emitting elements 1041, and the number of the light emitting elements 1041 of each of the second groups 30 may be different from each other or may be partially the same. In each of the second groups 30, the light emitting elements 1041 may be electrically connected to a same first electrode (not shown), the first electrode may be electrically connected to a third electrode 107, and the third electrode 107 may be electrically connected to a driving element 1031. Each first group 20 may be in one-to-one correspondence with one second group 30, and the light emitting elements 1041 in each first group 20, and the light emitting elements 1041 in the second group 30 in one-to-one correspondence with the first group 20 are driven to emit light by the same driving element 1031.

For example, as shown in fig. 5, the light emitting elements 1041 of each of the first groups 20 and the second groups 30 corresponding to the first groups 20 may be arranged in a straight line in a lateral direction of the display screen in the horizontal direction, and the light emitting elements 1041 of the second regions may be arranged in an interleaved manner.

For example, as shown in fig. 6, the light emitting elements 1041 of each of the first group 20 and the second group 30 corresponding to the first group 20 may be arranged in a straight line in the longitudinal direction of the horizontal direction of the display screen, and the light emitting elements 1041 of the second region may be arranged in an interleaved manner.

In one example, the driving element may not drive the light emitting element disposed at the first region of the display screen.

For example, as shown in fig. 1, the light emitting element 1041 disposed in the first region 101 may be electrically connected to the fourth electrode 108 and the second electrode 106, respectively, the fourth electrode 108 may be electrically connected to a driving element (not shown in the drawing) disposed in a third region in the display screen, and the third region may be a region in the display screen except for the first region 101 and the second region 102, so that the driving element disposed in the third region may drive the light emitting element 1041 disposed in the first region 101 to emit light.

As an example of the present embodiment, a plurality of light emitting elements are provided in a second film layer located in a second region of the display screen; the plurality of light emitting elements are divided into a plurality of second groups, each second group comprising at least one light emitting element; the light emitting elements in each second group are driven to emit light by the same driving element.

For example, fig. 7 and 8 are schematic diagrams illustrating a display screen in a horizontal orientation according to an exemplary embodiment. As shown in fig. 7 and 8, the number of light emitting elements 1041 in each second group 30 may be the same, and in each second group 30, the light emitting elements 1041 may be electrically connected to a same first electrode (not shown), which may be electrically connected to a third electrode 107, and the third electrode 107 may be electrically connected to a driving element 1031. The second, different set 30 may correspond to a different drive element 1031.

For example, as shown in fig. 7, the light emitting elements 1041 of each second group 30 may be arranged in a straight line in a lateral direction of the display screen in the horizontal direction, and the light emitting elements 1041 of the second region may be arranged in a matrix.

For example, as shown in fig. 8, the light emitting elements 1041 of each second group 30 may be arranged in a straight line in the longitudinal direction of the horizontal direction of the display screen, and the light emitting elements 1041 of the second region may be arranged in a matrix.

For example, fig. 9 and 10 are schematic diagrams illustrating a display screen in a horizontal direction according to an exemplary embodiment. As shown in fig. 9 and 10, the number of the light emitting elements 1041 of each second group 30 may be different from each other or partially the same, and in each second group 30, the light emitting elements 1041 may be electrically connected to the same first electrode (not shown), which may be electrically connected to a third electrode 107, and the third electrode 107 may be electrically connected to a driving element 1031. The second, different set 30 may correspond to a different drive element 1031.

For example, as shown in fig. 9, the light emitting elements 1041 of each second group 30 may be arranged in a straight line in a lateral direction of the horizontal direction of the display screen, and the light emitting elements 1041 of the second region may be arranged in a staggered manner.

For example, as shown in fig. 10, the light emitting elements 1041 of each second group 30 may be arranged in a straight line in the longitudinal direction of the horizontal direction of the display screen, and the light emitting elements 1041 of the second region may be arranged in a staggered manner.

Fig. 11 is a schematic diagram illustrating a display screen in a horizontal direction according to an exemplary embodiment. As shown in fig. 11, the display screen may have two first regions 101 and one second region 102, wherein one first region 101 may be distributed on one side of the second region 102 in a lateral direction of the horizontal direction of the display screen, and the other first region 101 may be distributed on the other side of the second region 102 in the lateral direction of the horizontal direction of the display screen. The light emitting elements 1041 in the second region 102 may be arranged in a matrix, and each row of the light emitting elements 1041 in the second region 102 may include two second groups 30, and in each row, the light emitting element 1041 in one of the second groups 30 may be driven by the driving element 1031 of the first region 101 disposed at one side of the second region 102, and the light emitting element 1041 in the other second group 30 may be driven by the driving element 1031 of the first region 101 disposed at the other side of the second region 102.

In one possible implementation, the light emitting elements of each first group and each second group may be arranged in any of a broken line, a curved line, or an array (for example, a triangular array, a circular array, etc.), and the light emitting elements of each first group and each second group may be arranged in the same manner, different from each other, or partially the same manner, which is not limited herein. The connection manner of the light emitting elements of each first group and each second group may include: any of series, parallel, or series-parallel is not limited herein.

In one possible implementation, the first electrodes electrically connected to each of the light emitting elements disposed in the second region may be spaced apart from each other. Thus, the light transmission effect of the second region can be further increased.

For example, as shown in fig. 3, the emission colors of the light emitting elements 1041 in each of the first groups 20 and each of the second groups 30 may be the same (not shown in the drawing), so that the first areas 101 and the second areas 102 may display uniform colors.

For example, as shown in fig. 3, if the first group includes a plurality of light emitting elements 1041, in each of the first groups 20, a light emitting color of a part of the light emitting elements 1041 may be set to red, a light emitting color of another part of the light emitting elements 1041 may be set to green, and a light emitting color of the rest of the light emitting elements 1041 may be set to blue. The distribution of the emission colors of the light emitting elements 1041 of different groups may be the same, different from each other, or partially the same. If the second group includes a plurality of light emitting elements 1041, in each of the second groups 30, a light emitting color of a part of the light emitting elements 1041 may be set to red, a light emitting color of another part of the light emitting elements 1041 may be set to green, and a light emitting color of the rest of the light emitting elements 1041 may be set to blue. The distribution of the emission colors of the light emitting elements 1041 of different groups may be the same, different from each other, or partially the same. It should be noted that, according to the display requirement, different color distributions of the light emitting elements may be set in the first area and the second area to achieve the required display effect, and the disclosure does not limit the light emitting color and the distribution manner of the light emitting elements. Therefore, the first area and the second area can display changeable colors only by changing the light emitting colors and the distribution modes of the light emitting elements without an additional driving circuit.

The light-emitting color of the light-emitting element may be adjusted in a suitable manner as needed, for example, by using filters of different colors, or by using light-emitting materials of different materials, etc., and the method of adjusting the light-emitting color of the light-emitting element of the present disclosure is not limited.

In one possible implementation, the material of the first film layer located in the first region of the display screen may be different from the material of the first film layer located in the second region of the display screen. For example, holes may be formed in the first film layer at the position of the second region of the display screen, and a material having high transparency, such as polymethyl methacrylate (PMMA, polymethyl methacrylate), may be filled, so that the second light emitting element may be supported, the mechanical strength of the screen may be increased, and the transparency of the second region may be further increased.

In one possible implementation, the thickness of the first film layer located in the first region of the display screen may be different from the thickness of the first film layer located in the second region of the display screen. For example, the thickness of the first film layer located in the second area of the display screen may be made smaller than the thickness of the first film layer located in the first area of the display screen, so that the transparency of the display screen in the second area may be effectively increased.

In one possible implementation, the first film layer is perforated at a location of the second region of the display screen. The transparency of the display screen in the second area may be further increased.

Fig. 12 is a flowchart illustrating a method of manufacturing a display screen according to an exemplary embodiment. The method may be used to prepare the display screen described above, as shown in fig. 12, and may include:

step 1200, depositing a metal layer on a target layer;

step 1201, performing photoetching and etching treatment on the metal layer to form source metal and drain metal of the driving element;

step 1202 depositing a layer of conductive material over the source metal and the drain metal;

step 1203, performing photolithography and etching treatment on the conductive material layer to form a third electrode;

In the embodiments of the present disclosure, photolithography and etching processes may be generally expressed as a process technology for transferring a circuit pattern onto a single crystal surface or a dielectric layer to form an effective pattern window or a functional pattern using an optical-chemical reaction principle and chemical and physical etching methods in integrated circuit fabrication.

As an example of the present embodiment, fig. 13 is a sectional view in the thickness direction of a display screen according to an exemplary embodiment. As shown in fig. 13, the first film layer 103 may include: a substrate (Glass) 1032, a Buffer layer (Buffer) 1033, a gate insulating layer (GI) 1034, an interlayer dielectric layer (ILD) 1035, and a Planarization Layer (PLN) 1036. The driving element 1031 may include a source metal 10311, a driving semiconductor layer 10312, a gate electrode 10313, and a drain metal 10314. The second film layer 104 may include a light emitting element 1041 and a Pixel Definition Layer (PDL) 1042.

The material of the substrate 1032 may include an insulating material such as glass, quartz, ceramic, or plastic, polyimide, or the like. The buffer layer 1033 may be formed on the substrate 1032. The material of the buffer layer 1033 may include silicon nitride, silicon oxide, or the like. The buffer layer 1033 may be used to prevent unnecessary components such as impurities or moisture from penetrating the substrate 1032 and to form a flat surface.

The driving semiconductor layer 10312 of the driving element 1031 may be formed on the buffer layer 1033. The material of the driving semiconductor layer 10312 may include polysilicon and a heavily doped region. The gate insulating layer 1034 may be formed over the driving semiconductor layer 10312 and the buffer layer 1033, and a material of the gate insulating layer 1034 may include silicon nitride or the like. The gate insulating layer 1034 may be subjected to photolithography and etching processes to form two first through holes penetrating the gate insulating layer 1034, each of which may be opposite to the driving semiconductor layer 10312. A gate electrode 10313 may be formed on the gate insulating layer 1034. An interlayer dielectric layer 1035 (an example of a target layer) may be formed on the gate insulating layer 1034 and the gate electrode 10313.

The interlayer dielectric layer 1035 may be subjected to photolithography and etching processes to form two second through holes penetrating the interlayer dielectric layer 1035, each of which may be opposite to one of the first through holes. A metal layer may be deposited on the interlayer dielectric layer 1035, and a material of the metal layer may be deposited in each of the first and second via holes during the formation of the metal layer to form a conductive contact hole. The metal layer may be subjected to photolithography and etching processes to form the source metal 10311 and the drain metal 10314 of the driving element 1031. Next, a conductive material layer may be deposited on the source metal 10311 and the drain metal 10314, and photolithography and etching processes may be performed on the conductive material layer to form the third electrode 107. The third electrode 107 may be electrically connected to the drain metal 10314 (or the third electrode 107 may be electrically connected to the source metal 10311). The source metal 10311 and the drain metal 10314 may be separated on the interlayer dielectric layer 1035, and the source metal 10311 and the drain metal 10314 may be electrically connected to the driving semiconductor layer 10312 through conductive contact holes, respectively. Wherein the second area of the display screen may not be provided with the driving element 1031.

A planarization layer 1036 may be formed on the interlayer dielectric layer 1035, the source metal 10311, the drain metal 10314, and the third electrode 107. And the planarization layer 1036 may be subjected to photolithography and etching processes to form a third via hole and a fourth via hole penetrating the planarization layer 1036, the third via hole may be opposite to the third electrode 107, and the fourth via hole may be opposite to the drain metal 10314. Next, a metal layer may be formed on the planarization layer 1036, and a metal of the metal layer may be deposited into the third and fourth via holes to form conductive contact holes. The metal layer may be subjected to photolithography and etching treatment to form the first electrode 105 and the fourth electrode 108, and the first electrode 105 and the fourth electrode 108 may be opposite to the conductive contact hole (where the first electrode may be electrically connected to or separated from the fourth electrode, the first electrode may be an integral structure, or may include a plurality of electrodes separated from each other, and the specific forms of the first electrode and the fourth electrode are not limited in the embodiment of the present disclosure), so that the first electrode 105 may be electrically connected to the third electrode 107 through the conductive contact hole, and the fourth electrode 108 may be electrically connected to the drain metal 10314 through the conductive contact hole.

The second film layer 104 may be formed on the planarization layer 1036, the second film layer 104 may include a light emitting element 1041 and a pixel defining layer 1042, the pixel defining layer 1042 may be formed on the fourth electrode 108, the first electrode 105, and the planarization layer 1036, the light emitting element 1041 may be confined in the second film layer 104 by the pixel defining layer 1042, the light emitting element 1041 disposed in the first region 101 may be electrically connected to the fourth electrode 108, the light emitting element 1041 disposed in the second region may be electrically connected to the first electrode 105, wherein the light emitting element 1041 and may include one or more of an organic light emitting layer, a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL), for example. For example, the display screen may include a plurality of light emitting elements 1041, and structures of the respective light emitting elements 1041 may be the same or different. Each light emitting element 1041 may be electrically connected to the first electrode 105 through a contact hole that is opposite to the light emitting element 1041.

A second electrode 106 may be formed on the second film 104, and the light emitting element 1041 may be electrically connected to the second electrode 106.

The first film layer where the driving element is located may include an insulating layer such as a substrate, a buffer layer, a gate insulating layer, an interlayer dielectric layer, a planarization layer, and may further include a metal layer such as a gate, a source, and a drain. Any one or more of the insulating layers or the metal layers may be added or removed as needed, and the description of the structures and the materials of the first film layer, the second film layer and the driving element of the display screen in the embodiments of the present disclosure is merely exemplary and not limited, and the specific structures and materials of the first film layer, the second film layer and the driving element in the embodiments of the present disclosure are not limited.

Fig. 14 is a schematic diagram of an electronic device, according to an example embodiment. The electronic device may be, for example, a terminal device such as a mobile phone, a tablet computer, a smart watch, a notebook computer, etc., which is not limited herein. As shown in fig. 14, the electronic device may include a display screen 70 as described above.

In one possible implementation, the display screen may include a first region 701, a second region 702, and a third region 703, where the third region 703 may display a multimedia screen such as an image, a video, etc., the first region 701 and the second region 702 may have a certain transparency, and the second region 702 may have a display function. An optical device (not shown in the figure) such as a camera may be disposed on a panel of the electronic device at a position opposite to the second area 702, so that the optical device may acquire light rays incident through the second area 702 of the display screen, and further perform operations such as capturing images, video, identifying unlocking, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display screen, characterized in that the display screen comprises a first area and a second area in a horizontal direction, the display screen comprising in a thickness direction:

the first film layer further comprises a third electrode, the light-emitting element arranged in the second area is respectively and electrically connected with the first electrode and the second electrode, the first electrode is electrically connected with the third electrode, and the third electrode is electrically connected with the driving element;

the second area is an area where an optical device is arranged behind the second area, and the optical device acquires light rays which penetrate through the second area.

2. A display screen as recited in claim 1, wherein,

3. The display screen of claim 2, wherein the fourth electrode is spaced apart from the first electrode.

4. A display screen as recited in claim 2, wherein,

each first group corresponds to one second group one by one;

5. The display screen of claim 4, wherein the first electrodes electrically connected to each of the light emitting elements disposed in the second region are spaced apart from each other.

6. The display screen of claim 1, wherein the driving element does not drive a light emitting element disposed in a first region of the display screen.

7. The display screen of claim 6, wherein the display screen is configured to display the display screen,

8. A display screen according to claim 1 or claim 7, wherein the first electrodes of each light emitting element disposed in the second region are electrically connected to each other.

9. A display screen as claimed in claim 4 or 7, wherein the light emitting elements in each first group are of the same light emitting colour and/or the light emitting elements in each second group are of the same light emitting colour.

10. A display screen according to claim 4 or 7, wherein the light emitting elements in each first group are of mutually different or partly identical light emitting colors and/or the light emitting elements in each second group are of mutually different or partly identical light emitting colors.

11. A display screen as claimed in claim 4 or 7, wherein the light emitting elements in each first group are arranged in any one of the following forms: a line, fold line, curve, or array, and/or the light emitting elements in each second group are arranged in any of the following forms: straight lines, broken lines, curved lines, or arrays.

12. The display screen of claim 1, wherein a material of the first film layer in the first region of the display screen is different from a material of the first film layer in the second region of the display screen.

13. The display screen of claim 1, wherein a thickness of the first film layer in the first region of the display screen is different from a thickness of the first film layer in the second region of the display screen.

14. The display screen of claim 1, wherein the first film layer is perforated at a location of the second region of the display screen.

15. A method for manufacturing a display screen, the method being used for manufacturing the display screen according to any one of claims 1 to 14, the method comprising:

depositing a metal layer on the target layer;

16. An electronic device, the electronic device comprising:

a display screen as claimed in any one of claims 1 to 14, and/or

A display screen prepared by the method of claim 15.