CN116096183A

CN116096183A - Display device, manufacturing method thereof and electronic equipment

Info

Publication number: CN116096183A
Application number: CN202211518698.7A
Authority: CN
Inventors: 肖玲; 赵振元
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-09

Abstract

The application discloses a display device and manufacturing method and electronic equipment thereof, the display device includes: a display assembly having a first region, a side of the first region facing away from the display surface for providing a photosensitive element; the optical film layer is positioned on the light emitting side of the display component; the optical film layer is provided with a first hollowed-out area opposite to the first area; the first functional piece is filled in the first hollowed-out area and is at least used for improving the light transmittance of the first area, and the appearance of the first functional piece and the appearance of the optical film layer meet the color condition.

Description

Display device, manufacturing method thereof and electronic equipment

Technical Field

The present disclosure relates to the field of electronic devices, and more particularly, to a display device, a manufacturing method thereof, and an electronic device.

Background

Along with the continuous progress of science and technology, more and more electronic devices with display functions are widely applied to daily life and work of people, bring great convenience to daily life and work of people, and become an indispensable important tool for people at present.

The main component of the electronic device for realizing the display function is a display component. Currently, electronic devices are generally integrated with photosensitive elements. Currently, the mainstream design adopts an under-screen scheme, and the photosensitive element is arranged on the back surface of the display component.

The area of the display assembly opposite to the photosensitive element needs to have a larger light transmittance to ensure a sufficient amount of light sensed by the photosensitive element, whereas in the existing electronic device, the light transmittance of the area of the display assembly corresponding to the photosensitive element is lower.

Disclosure of Invention

In view of this, the present application provides a display device, a manufacturing method thereof and an electronic apparatus, and the scheme is as follows:

a display device, comprising:

a display assembly having a first region, a side of the first region facing away from the display surface for providing a photosensitive element;

the optical film layer is positioned on the light emitting side of the display component; the optical film layer is provided with a first hollowed-out area opposite to the first area;

the first functional piece is filled in the first hollowed-out area and is at least used for improving the light transmittance of the first area, and the appearance of the first functional piece and the appearance of the optical film layer meet the color condition.

Preferably, in the display device, the first functional element is a carbon nanotube film or a graphene film.

Preferably, in the above display device, the thickness of the first functional element is not smaller than the thickness of the optical film layer; the surface of one side of the first functional piece, which faces away from the display assembly, is provided with a bulge opposite to the surface of one side of the optical film layer, which faces away from the display assembly.

Preferably, in the above display device, the height of the protrusions does not exceed 5000nm.

Preferably, in the above display device, a second functional element is disposed between the optical film layer and the display component, and the second functional element is at least used for improving light transmittance of the display component.

Preferably, in the above display device, the second functional element has a second hollowed-out area opposite to the first area, the first functional element further fills the second hollowed-out area, and the thickness of the first functional element is greater than the thickness of the second functional element;

or, the second functional element covers the display assembly; the first functional piece is positioned on the surface of the second functional piece corresponding to the first area.

Preferably, in the above display device, the display assembly includes:

an array substrate having a first surface and a second surface opposite to each other;

a display array on the first surface, the display array having a plurality of light emitting elements for image display; the light-emitting element is an OLED sub-pixel;

an encapsulation layer on a surface of the display array;

wherein the display array has a first light transmittance in a portion of the first region and a second light transmittance in a portion of the array substrate outside the first region, the first light transmittance being greater than the second light transmittance, and/or the pixel circuit in the array substrate has a third light transmittance in a portion of the first region and a fourth light transmittance in a portion of the array substrate outside the first region, the third light transmittance being greater than the fourth light transmittance.

Preferably, in the above display device, the display assembly includes:

an encapsulation layer on a surface of the display array;

the photosensitive element is positioned on one side of the array substrate, which is away from the display array, and is arranged opposite to the first area.

The application also provides an electronic device, comprising:

the display device according to any one of the above;

the photosensitive element is positioned at one side of the display component, which is away from the optical film layer, and is opposite to the first area;

and the processor is connected with the photosensitive element and the display device and used for controlling the working states of the display device and the photosensitive element.

The application also provides a manufacturing method of the display device, which comprises the following steps:

preparing a display assembly; the display assembly has a first region;

preparing an optical film layer and a first functional piece on the light emitting side of the display assembly;

the optical film layer is provided with a first hollowed-out area opposite to the first area; the first functional piece is filled in the first hollowed-out area and is at least used for improving the light transmittance of the first area.

As can be seen from the above description, in the display device, the manufacturing method thereof and the electronic device provided by the technical scheme of the present application, the display device includes: a display assembly having a first region, a side of the first region facing away from the display surface for providing a photosensitive element; the optical film layer is positioned on the light emitting side of the display component; the optical film layer is provided with a first hollowed-out area opposite to the first area; the first functional piece is filled in the first hollowed-out area and is at least used for improving the light transmittance of the first area, and the appearance of the first functional piece and the appearance of the optical film layer meet the color condition.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the provided drawings without inventive effort to those skilled in the art.

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure, and should not be construed as limiting the scope of the invention, since any modification, variation in proportions, or adjustment of the size, which would otherwise be used by those skilled in the art, would not have the essential significance of the present disclosure, would not affect the efficacy or otherwise be achieved, and would still fall within the scope of the present disclosure.

Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application;

FIG. 2 is a top view of the optical film layer of the display device shown in FIG. 1;

fig. 3 is a schematic structural diagram of another display device according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a display assembly according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another display assembly according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 9-14 are process flow diagrams of a manufacturing method of a display device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will now be described more fully hereinafter with reference to the accompanying drawings, in which it is shown, and in which it is evident that the embodiments described are exemplary only some, and not all embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

An OLED (organic light emitting diode) display assembly is one of the currently mainstream display assemblies. The OLED display component has the advantages of light weight, wide viewing angle, wide color gamut, narrow frame, bendable property and the like, and is widely applied to the fields of wearable equipment, mobile phones, flat-panel electronic equipment, computers and the like. In pursuit of better customer experience, increasing the device screen ratio is a current trend. The design of the under-screen photosensitive element is adopted on the existing OLED display component, so that the screen occupation ratio is improved, and the main stream development direction of the full-screen is realized.

In the OLED display component, image display is carried out through OLED sub-pixels. In the OLED subpixel, a plurality of metal wirings and a large area metal electrode of the OLED subpixel are required for display driving of the OLED subpixel. The metal wires and the metal electrodes are made of Ti-Al-Ti, mo, ag or ITO and the like, so that the metal wires and the metal electrodes have strong reflection effect, have high reflectivity to ambient light and influence the display effect.

In order to solve the above problem, an optical film layer capable of reducing reflection of ambient light may be disposed on the light emitting side of the display module, for example, circular polarized light is used as the optical film layer, so that reflection of the OLED display module on the ambient light may be reduced.

Although the reflection of ambient light can be effectively reduced by arranging the circular polarizer on the light emitting side of the OLED display assembly, the light transmittance of the photosensitive element can be reduced, and the photosensitive effect of the photosensitive element is affected. Generally, the OLED display assembly using the circular polarizer can absorb at least 50% of reflected light, greatly reduce the reflectivity to ambient light, but the light transmittance of the circular polarizer is generally about 42%, so that the light incident on the photosensitive element has a loss of more than 50%, and seriously affects the photosensitive effect of the photosensitive element. Taking the example that the photosensitive element is a camera, setting circular polarized light will seriously affect the imaging quality of the camera, so that the shot image is blurred.

In view of this, the technical scheme of the application provides a display device, a manufacturing method thereof and electronic equipment, wherein the display device comprises:

By arranging the first hollowed-out area on the first area of the optical film layer corresponding to the photosensitive element, the influence of the optical film layer on the light transmittance of the first area can be avoided. And through the first function piece that sets up in this first fretwork region, can promote the luminousness in first region, and then improve the sensitization volume of sensitization component, improve its sensitization effect. In addition, the first functional piece still with the outward appearance of optical film layer satisfies the same condition of colour, can avoid the optical film layer because set up the outward appearance colour difference that first fretwork area leads to, pack through first functional layer moreover first fretwork area can also avoid because the optical film layer sets up the encapsulation defect that first fretwork area leads to.

It should be noted that, in the embodiment of the present application, the display component is not limited to an OLED display component, but may be a display component with a micro LED (light emitting diode), and the specific type of the display component is not limited in the embodiment of the present application. The sub-pixels in the Micro LED display assembly are Micro LEDs, and the Micro LEDs comprise Mini LEDs or Micro LEDs. The photosensitive element is not limited to be a camera, but may be an optical distance sensor, etc., and the embodiment of the present application is not limited to a specific type of the photosensitive element.

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application, and fig. 2 is a top view of an optical film layer of the display device shown in fig. 1, where the display device includes:

a display assembly 11, the display assembly 11 having a first region 111, the side of the first region 111 facing away from the display surface S1 being for positioning the photosensitive element 10;

an optical film layer 12, wherein the optical film layer 12 is positioned on the light emitting side of the display component 11; the optical film layer 12 has a first hollowed-out area 121 opposite to the first area 111;

the first functional piece 13 fills the first hollowed-out area 121, the first functional piece 13 is at least used for improving the light transmittance of the first area 111, and the appearance of the first functional piece 13 and the appearance of the optical film layer 12 meet the color condition.

Wherein the appearance of the first functional element 13 and the optical film layer 12 meets the color condition includes: the appearance color of the first functional element 13 is the same as or similar to the appearance color of the optical film layer 12, and the similar difference between the appearance colors cannot be recognized by human eyes.

According to the display device disclosed by the embodiment of the application, the first hollowed-out area 121 is arranged on the first area 111 of the optical film layer 12 corresponding to the photosensitive element 10, so that the influence of the optical film layer 12 on the light transmittance of the first area 111 can be avoided. In addition, the first functional element 13 disposed in the first hollow area 121 can improve the light transmittance of the first area 111, thereby improving the light sensing amount of the light sensing element 10 and improving the light sensing effect thereof. In addition, the first functional piece 13 and the appearance of the optical film layer 12 also meet the color condition, so that the difference of appearance colors of the optical film layer 12 caused by the arrangement of the first hollowed-out area 121 can be avoided.

As described above, the display device 11 may be an OLED display device or a display device with micro LEDs. The photosensitive element 10 may be a camera or an optical distance sensor.

The optical film layer 12 is used to reduce reflection of the display assembly 11 to ambient light. The optical film 12 may be a circular polarizer. The optical film layer 12 includes a polarizer and a quarter-wave plate, wherein the quarter-wave plate is located between the polarizer and the display assembly 11.

The circular polaroid arranged in the above way can effectively reduce the reflection of the display component 11 to the ambient light, and the working principle is as follows:

ambient light is unpolarized natural light. The incident ambient light passes through the polarizing plate to form first linearly polarized light, and the polarization direction of the first linearly polarized light is consistent with the polarization direction of the polarizing plate. The first linearly polarized light passes through the quarter wave plate to form first circularly polarized light. The first circularly polarized light is reflected by the film layer in the display component 11 and then converted into second circularly polarized light, one of the first circularly polarized light and the second circularly polarized light is right-handed circularly polarized light, and the other is left-handed circularly polarized light. The second circularly polarized light is converted into second linearly polarized light after passing through the quarter wave plate, and the polarization direction of the second linearly polarized light is perpendicular to the polarization direction of the first linearly polarized light, namely, perpendicular to the polarization direction of the polarizing plate due to the change of the polarization state of the circularly polarized light, and the second linearly polarized light is blocked by the polarizing plate, so that the blocking of the reflected light of the display component 11 is realized.

The light emitted from the display component 11 for displaying images is unpolarized light, and the light emitted from the display component 11 has no conversion of the circularly polarized light polarization state in the emitting process, so that the light can be emitted through the circularly polarized light sheet. Specifically, the light emitted from the display component 11 sequentially passes through the quarter wave plate and the polaroid, the light emitted from the display component 11 is converted into circular polarized light through the quarter wave plate, and the circular polarized light is converted into linear polarized light through the polaroid.

Optionally, the first functional piece 13 is a carbon nanotube film or a graphene film. Compared with the optical film layer 12, the carbon nanotube film and the graphene film have high light transmittance, and the light transmittance of the first region 111 can be improved, so that the light quantity incident on the photosensitive element 10 can be improved, and the photosensitive effect of the photosensitive element 10 can be improved.

And based on the material property of the carbon nanotubes, the stacking structure of the multi-layer single-layer carbon nanotubes can be realized, and the thickness of the first functional layer 13 can be adjusted by adjusting the stacking layer number of the single-layer carbon nanotubes in the first functional piece 13 while ensuring enough light transmittance, so that the appearance color of the first functional piece 13 is adjusted, and the appearance of the first functional piece 13 and the optical film layer 12 can meet the color condition.

The material property of the graphene film enables the graphene film to realize a multi-layer single-layer graphene stacking structure, and the thickness of the first functional layer 13 can be adjusted by adjusting the stacking layer number of the single-layer graphene in the first functional piece 13 while ensuring enough light transmittance, so that the appearance color of the first functional piece 13 is adjusted, and the appearance of the first functional piece 13 and the optical film layer 12 meet color conditions.

In this embodiment, the first functional element 13 includes a plurality of stacked sub-layers, and the sub-layers may be the single-layer graphene or the single-layer carbon nanotube. The light transmittance and the appearance color of the first functional layer 13 can be adjusted by adjusting the thickness thereof. The thickness dimension of the first functional element 13 can be adjusted by adjusting the number of sublayers as described above.

Optionally, the thickness of the first functional piece 13 is not smaller than the thickness of the optical film layer 12, so that the thickness of the first functional piece 13 is equal to or greater than the thickness of the optical film layer 12, and the first functional piece 13 can completely fill the first hollowed-out area 121 in the thickness direction of the optical film layer 12. The side surface of the first functional element 13 facing away from the display component 11 is opposite to the side surface of the optical film layer 12 facing away from the display component 11, so as to improve the photosensitive viewing angle of the photosensitive element 10.

In the embodiment shown in fig. 1, the thickness of the first functional element 13 is equal to the thickness of the optical film layer 12. When the side surface of the first functional element 13 facing away from the display component 11 has a protrusion opposite to the side surface of the optical film layer 12 facing away from the display component 11, the structure of the display device may be as shown in fig. 3.

Referring to fig. 3, fig. 3 is a schematic structural diagram of another display device provided in this embodiment, in this manner, a side surface of the first functional element 13 facing away from the display component 11 has a protrusion with respect to a side surface of the optical film layer 12 facing away from the display component 11, and the protrusion may be equivalent to a micro lens, so that the photosensitive viewing angle range of the photosensitive element 10 may be enlarged by the protrusion.

Optionally, the height of the protrusions is set to be not more than 5000nm, so that the fact that the flatness of the outer surface of the display device is affected by the fact that the protrusions are too large is avoided. When the height of the protrusions does not exceed 5000nm, human touch feeling and vision are not easily distinguished, and the above-described effect of increasing the viewing angle range can also be achieved.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present application, in the display device shown in fig. 4, a second functional element 14 is disposed between the optical film layer 12 and the display assembly 11, and the second functional element 14 is at least used for improving the light transmittance of the display assembly 11.

In the manner shown in fig. 4, the first functional element 13 is illustrated by taking the case that a side surface facing away from the display assembly 11 is flush with a side surface of the optical film layer 12 facing away from the display assembly 11, and obviously, in this manner, it is also possible to refer to the manner shown in fig. 3, where a side surface of the first functional element 13 facing away from the display assembly 11 has a protrusion opposite to a side surface of the optical film layer 12 facing away from the display assembly 11.

The second functional element 14 may be used as an antireflection film, so as to increase the light transmittance of the display assembly 11 and improve the display brightness.

The second functional element 14 may also be used as a heat dissipation layer to improve the heat dissipation efficiency of the display assembly 11 and the temperature uniformity of different areas of the display assembly 11.

The first functional element 13 and the second functional element 14 are both made of a first material film. The first functional element 13 and the second functional element 14 are made of the same film of the first material, so that the manufacturing process flow can be simplified.

Alternatively, the first material film may be a carbon nanotube film or a graphene film. The carbon nanotube film and the graphene film are both good light-transmitting films, so that the light transmittance can be improved, and the carbon nanotube film and the graphene film are both good heat-conducting films, so that the heat dissipation efficiency of the display assembly 11 can be improved. And the first functional piece 13 and the second functional piece 14 are both made of a first material film, have consistent heat conducting performance, and can ensure that different areas of the display assembly 11 have relatively uniform thermal field distribution.

As shown in fig. 4, the second functional element 14 has a second hollowed-out area 141 opposite to the first area 111, the first functional element 13 further fills the second hollowed-out area 141, and the thickness of the first functional element 13 is greater than that of the second functional element 14, so that the first functional element 13 can simultaneously fill the first hollowed-out area 121 and the second hollowed-out area 141, and a side surface of the first functional element 13 facing away from the display assembly 11 is flush with a side surface of the optical film layer 12 facing away from the display assembly 11 or has a protrusion.

The second functional layer 14 may also be arranged to cover the light exit side of the entire display assembly 11, in which case the structure of the display device is shown in fig. 5.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present application, which is different from the manner shown in fig. 4 in that the second functional element 14 covers the display assembly 11; the first functional element 13 is located on the surface of the second functional element 14 corresponding to the first region 111. In this embodiment, the second functional layer 14 covers the light emitting side of the entire display module 11. At this time, the thickness of the second functional element 14 may be the same as the thickness of the first functional element 13, or may be different.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a display assembly according to an embodiment of the present application, where the display assembly includes:

an array substrate 21 having opposite first and second surfaces;

a display array 22 on the first surface, the display array 22 having a plurality of light emitting elements for image display; the light-emitting element is an OLED sub-pixel;

an encapsulation layer 23 on the surface of the display array 22;

that is, the display device is an OLED display device, and compared to other types of display devices, such as an LCD (liquid crystal display device) or a micro LED display device, the OLED display device has a large number of metal wires and large-area metal electrodes, which results in a large reflectivity to ambient light. According to the technical scheme, the reflection of the OLED display assembly to the ambient light can be reduced, the light transmittance of the OLED display assembly in the first area 111 can be improved, and the photosensitive effect of the optical element 10 is guaranteed.

The array substrate 21 includes a substrate 211 and a pixel circuit 212 disposed on the substrate 21, wherein the pixel circuit 212 includes a Thin Film Transistor (TFT), and the pixel circuit 212 is used for controlling the OLED sub-pixels to perform light emitting display. The substrate 21 may be a rigid non-bendable substrate such as glass or a flexible bendable substrate such as PI (polyimide). The encapsulation layer 23 may be a glass encapsulation structure or a flexible film encapsulation structure.

Optionally, the first area 111 is a portion of the display area of the display assembly 11, so as to avoid that the first area 111 is located in the frame area of the display assembly 11 to increase the frame width.

As shown in fig. 1 and 6, the display array 22 has a first light transmittance at a portion of the first region 111 (defining the portion as a first display array region) and a second light transmittance at a portion outside the first region 111 (defining the portion as a second display array region), the first light transmittance being greater than the second light transmittance. The first light transmittance is set to be larger than the second light transmittance, so that the light transmittance of the display device in the area corresponding to the photosensitive element 10 can be improved, the light intensity of the incident optical element 10 can be improved, and the photosensitive effect of the incident optical element can be improved.

The first light transmittance may be made greater than the second light transmittance by reducing the density and/or size of the subpixels in the first display array area without changing the subpixel design in the second display array area.

As shown in fig. 1 and 6, the pixel circuit 212 in the array substrate 21 has a third light transmittance at a portion of the first region (defining the portion as a first circuit region) and a fourth light transmittance at a portion other than the first region (defining the portion as a second circuit region), and the third light transmittance is greater than the fourth light transmittance. The third light transmittance is set to be larger than the fourth light transmittance, so that the light transmittance of the display device in the area corresponding to the photosensitive element 10 can be improved, the light intensity of the incident optical element 10 can be improved, and the photosensitive effect of the display device can be improved.

The third light transmittance may be made greater than the fourth light transmittance by reducing the number and/or size of the thin film transistors in the second circuit region without changing the pixel circuit design in the second circuit region.

In this embodiment of the present application, the first light transmittance may be set to be greater than the second light transmittance, and/or the third light transmittance may be set to be greater than the fourth light transmittance.

Referring to fig. 7, fig. 7 is a schematic structural diagram of another display assembly according to an embodiment of the present application, where the display assembly includes:

an array substrate 21 having opposite first and second surfaces;

an encapsulation layer 23 on the surface of the display array 22;

the photosensitive element 10 is located at a side of the array substrate 21 facing away from the display array 22, and is disposed opposite to the first region 111.

The photosensitive element 10 is arranged on one side, deviating from the display surface, of the display assembly 11, and can be used as an under-screen photosensitive element, so that the influence on the width of the frame area can be avoided, and a narrow frame structure or a full-screen structure can be conveniently realized.

As can be seen from the above description, the technical solution of the present application can improve the light transmittance of the display device corresponding to the first area 111 by providing the first functional element 13 in the display device, thereby improving the photosensitive effect of the photosensitive element 10. When the photosensitive element 10 is a camera, the imaging quality of the camera can be improved.

And the first functional piece 13 filled in the first hollow area 121 can improve the packaging effect, avoid packaging defects caused by the fact that the optical film layer 12 is provided with the first hollow area 121, prevent water vapor from invading from the first hollow area 121, and prolong the service life of the display device.

Further, the first functional piece 13 may be a carbon nanotube film or a graphene film, so that not only the light transmittance but also the heat dissipation performance can be improved.

Further, a second functional element 14 may be disposed between the display component 11 and the optical film layer 12, so as to improve the light transmittance of the display component 11, and reduce the driving current under the same light-emitting brightness, thereby improving the service life of the sub-pixels. The second functional piece 14 can be a carbon nanotube film or a graphene film, so that not only the light transmittance can be improved, but also the heat dissipation performance can be improved, and the temperature uniformity of different areas of the display assembly 11 can be improved.

Based on the above embodiment, another embodiment of the present application further provides an electronic device, where the electronic device is shown in fig. 8.

Referring to fig. 8, fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application, and in combination with fig. 8 and the foregoing embodiment drawings, the electronic device includes:

the display device 31 described in the above embodiment;

the photosensitive element 33, the photosensitive element 33 is located at one side of the display component 11 away from the optical film layer 12, and is disposed opposite to the first area 111;

and the processor 32 is connected with the photosensitive element 22 and the display device 31, and is used for controlling the working states of the display device 31 and the photosensitive element 32.

The electronic device according to the embodiment of the present application adopts the display device 31 according to the foregoing embodiment, so that not only the light transmittance of the region corresponding to the photosensitive element 10 can be improved, but also the photosensitive effect thereof can be improved, and the packaging effect and the service life can be improved by the first functional element 13.

The electronic equipment comprises electronic products with display functions, such as mobile phones, tablet computers, notebook computers, intelligent televisions, vehicle-mounted display equipment, wearable equipment and the like.

When the display device 31 has the second functional element 14, not only the luminous efficiency of the display assembly 11 can be improved, but also the heat can be quickly conducted to the low temperature region through the second functional element 14, and the heat dissipation efficiency of the display assembly 11 and the temperature uniformity of different regions can be improved in the high temperature environment.

In a low temperature environment, the luminous efficiency of the display module 11 is affected. To solve this problem, a heating member may be provided at the light emitting side of the display assembly 11, the heating member including a metal mesh. In the direction perpendicular to the display assembly 11, the grid lines of the metal grid do not overlap with the sub-pixels in the display assembly 11 to avoid the grid lines affecting the display effect.

In this embodiment, the second functional piece 14 is made of a conductive material, such as a graphene film or a carbon nanotube film, so that not only the light transmittance can be improved, but also good conductive properties can be achieved. At this time, the second functional element 14 is connected to the heating element, and the heating element is in contact with the second functional element 14, so that the second functional element 14 is used as a connecting line of the heating element, and the second functional element 14 covers other display areas except the first area 111 or covers the whole display area, so that the second functional element 14 can realize large-area electric contact and thermal contact with the heating element, thereby not only reducing contact resistance and improving heat productivity of the heating element, but also enabling heat generated by the heating element to be uniformly and rapidly conducted to different areas of the display assembly 11, and improving heating uniformity and heating speed of the display assembly 11 in a low-temperature environment.

The processor 32 is electrically connected to the heating element via the second functional element 14 and is also adapted to control the operating state of the heating element based on the ambient temperature. The processor 32 supplies current to the heating element through the second function element 14 to cause it to generate heat when the ambient temperature is below a set temperature, and opens the circuit to the second function element 14 to shut off the heating function when the ambient temperature is above the set temperature.

Based on the foregoing embodiments, another embodiment of the present application further provides a method for manufacturing a display device, which is used for manufacturing the display device described in the foregoing embodiments, where the manufacturing method includes:

step S11: preparing a display assembly; the display assembly has a first region;

step S12: preparing an optical film layer and a first functional piece on the light emitting side of the display assembly;

The manufacturing method can manufacture the display device of the embodiment, and can improve the light transmittance of the area corresponding to the photosensitive element so as to improve the photosensitive effect of the photosensitive element.

The fabrication methods described in the embodiments of the present application are further described below with reference to the process flow diagrams.

Referring to fig. 9 to 14, fig. 9 to 14 are process flow diagrams of a manufacturing method of a display device according to an embodiment of the present application, and in combination with fig. 9 to 14 and the drawings of the display device according to the foregoing embodiment, the manufacturing method includes:

first, as shown in fig. 9, a first film layer 130 is prepared on the light-emitting side of the display module 11. The display assembly 11 has a first region 111, the side of the first region 111 facing away from the display surface being used for the arrangement of the photosensitive element 10. In this step, the first film layer 130 is used to prepare the first functional layer 13. Taking the first functional layer 13 as an example of a graphene material, a graphene film may be deposited on the surface of the encapsulation layer 23 of the display assembly 11 by a Chemical Vapor Deposition (CVD) process as the first film layer 130.

When the CVD process is used to prepare the graphene film as the first film layer 130, a carbon-containing small molecular raw material may be used, and carbon atoms may be deposited on the surface to be deposited by a chemical method to form the graphene film, or a monolayer graphene may be obtained from bulk graphite by a mechanical stripping method, or a liquid phase intercalation method, which is not limited in this embodiment of the present application.

Then, as shown in fig. 10—i fig. 11, a patterned photoresist 41 is formed on the first film layer 130 through a photolithography process. The process comprises the following steps: as shown in fig. 10, an unpatterned photoresist 41 is formed on the surface of the first film layer 130; as shown in fig. 11, the photoresist 41 is patterned, leaving only the photoresist 41 over the first region 111.

As shown in fig. 12, the first film 130 in the other area except the first area 111 is etched away under the protection of the photoresist 41 above the first area 111, so as to form the first functional element 13 corresponding to the first area 111.

As further shown in fig. 13, the photoresist 41 is stripped above the first functional element 13.

Finally, as shown in fig. 14, the optical film layer 12 is attached to the light emitting side of the display assembly 11, where the optical film layer 12 has a first hollow area 121, and the first functional element 13 is accommodated in the first hollow area 121 by alignment and attachment.

The method for manufacturing the first functional element 13 is not limited to the method shown in fig. 9-14, and the first functional element 13 may be directly formed by using a light shielding cover. At this time, a mask with a pattern structure is used to coat a film to form the first functional piece 13, and the mask exposes a portion of the encapsulation layer 23 opposite to the first region 111 and shields other portions of the encapsulation layer 23, so that the first functional layer 13 can be formed only in a required region during film coating.

When manufacturing the display device having the second functional element 14, a process of manufacturing the second functional element 14 may be added to the above-described manufacturing process before forming the first functional element 13. If the second functional piece 14 has the second hollow area 141, a structure as shown in fig. 4 is formed, and if there is no second hollow area 141, a structure as shown in fig. 5 is formed, which is not described herein again.

In the present specification, each embodiment is described in a progressive manner, or a parallel manner, or a combination of progressive and parallel manners, and each embodiment is mainly described as a difference from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the electronic device and the manufacturing method disclosed by the embodiment, the description is relatively simple because the electronic device and the manufacturing method correspond to the display device disclosed by the embodiment, and the relevant parts only need to be described with reference to the corresponding parts of the display device.

It is noted that in the description of the present application, it is to be understood that the drawings and descriptions of the embodiments are illustrative and not restrictive. Like reference numerals refer to like structures throughout the embodiments of the specification. In addition, the drawings may exaggerate the thicknesses of some layers, films, panels, regions, etc. for understanding and ease of description. It will also be understood that when an element such as a layer, film, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may be present. In addition, "on" means positioning an element on or under another element, but not essentially on the upper side of the other element according to the direction of gravity.

The terms "upper," "lower," "top," "bottom," "inner," "outer," and the like are used for convenience in describing and simplifying the present application based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of additional like elements in an article or apparatus that comprises such an element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display device, comprising:

2. The display device according to claim 1, wherein the first functional element is a carbon nanotube film or a graphene film.

3. The display device according to claim 1, wherein a thickness of the first functional member is not smaller than a thickness of the optical film layer; the surface of one side of the first functional piece, which faces away from the display assembly, is provided with a bulge opposite to the surface of one side of the optical film layer, which faces away from the display assembly.

4. A display device according to claim 3, the height of the protrusions not exceeding 5000nm.

5. The display device of claim 1, wherein a second functional element is disposed between the optical film layer and the display assembly, the second functional element being at least configured to enhance light transmittance of the display assembly.

6. The display device of claim 5, the second functional element having a second hollowed-out area opposite the first area, the first functional element further filling the second hollowed-out area, the first functional element having a thickness greater than a thickness of the second functional element;

7. The display device of claim 1, the display assembly comprising:

an encapsulation layer on a surface of the display array;

8. The display device of claim 1, the display assembly comprising:

an encapsulation layer on a surface of the display array;

9. An electronic device, comprising:

the display device according to any one of claims 1 to 8;

10. A method of fabricating a display device, comprising:

preparing a display assembly; the display assembly has a first region;