CN112234082A

CN112234082A - Display screen and electronic device

Info

Publication number: CN112234082A
Application number: CN202011079424.3A
Authority: CN
Inventors: 叶成亮; 崔志佳; 孙舟; 罗永辉
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-01-15
Anticipated expiration: 2040-10-10
Also published as: CN112234082B

Abstract

The application discloses display screen and electron device, the display screen includes the display layer, driver layer and substrate, the driver layer sets up the below on display layer, the substrate sets up the below at the driver layer, the substrate includes along the first rete of keeping away from the driver layer setting of range upon range of in proper order, second rete and third rete, the surface of second rete is formed with the microstructure of unevenness, the microstructure is used for changing the propagation path who passes the light behind display layer and the driver layer in order to reduce or eliminate the diffraction of the light that passes the display screen. Uneven microstructures are formed on the second film layer of the substrate below the driving layer, the microstructures can change the propagation path of light rays passing through the display layer and the driving layer, namely, the diffraction light rays emitted from the driving layer can be interfered, and the propagation path of the light rays is disturbed, so that the diffraction of the light rays passing through the display screen is reduced or eliminated integrally, and the imaging quality of a camera placed below the display screen is improved.

Description

Display screen and electronic device

Technical Field

The application relates to the technical field of display, in particular to a display screen and an electronic device.

Background

In the electronic equipment such as the cell-phone of correlation technique, in order to improve the screen and account for the ratio in order to realize comprehensive screen effect, can set up the camera in the below of display screen, the camera sees through the display screen and carries out optic fibre collection and shaping. However, since the wiring of the display screen is complex, when the external object reflected light is incident into the display screen, the incident light is diffracted due to the small gap of the wiring, and when the wiring distance is less than or equal to the light wavelength, the light diffraction effect is caused, which affects the photographing quality.

Disclosure of Invention

The embodiment of the application provides a display screen and an electronic device.

The display screen of the embodiment of the application includes:

a display layer;

a driving layer disposed below the display layer;

the substrate is arranged below the driving layer and comprises a first film layer, a second film layer and a third film layer which are sequentially stacked along one side far away from the driving layer, an uneven microstructure is formed on the surface of the second film layer, and the microstructure is used for changing the propagation path of light passing through the display layer and the driving layer so as to reduce or eliminate diffraction of the light passing through the display screen.

The electronic device of the embodiment of the application comprises:

the display screen according to the above embodiment; and

the camera is arranged below the display screen, and the microstructure at least partially covers the camera.

In the display screen and the electronic device of the embodiment of the application, the uneven microstructure is formed on the second film layer of the substrate below the driving layer, and the microstructure can change the propagation path of light rays passing through the display layer and the driving layer, namely, the diffraction light rays emitted from the driving layer can be interfered, and the propagation path is disturbed, so that the diffraction of the light rays passing through the display screen is reduced or eliminated on the whole, and the imaging quality of a camera placed below the display screen is improved.

Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a display screen according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of the display screen of FIG. 1 at II;

FIG. 3 is a schematic diagram of a second film layer of a substrate of a display panel according to an embodiment of the present application;

FIG. 4 is a schematic view showing a diffraction pattern of a display screen in the related art;

FIG. 5 is another schematic structural diagram of a display screen according to an embodiment of the present application;

FIG. 6 is a schematic view of another structure of a second film layer of a substrate of a display screen according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

fig. 8 is a schematic cross-sectional view of the electronic device of fig. 7 along line VIII-VIII.

Description of the main element symbols:

an electronic device 1000;

the display panel comprises a display screen 100, a display layer 10, a driving layer 20, a substrate 30, a first film layer 31, a second film layer 32, a microstructure 321, a groove 3211, a first surface 322, a second surface 323 and a third film layer 33;

camera 200, first display area 101, second display area 102.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 3, a display panel 100 according to an embodiment of the present disclosure includes a display layer 10, a driving layer 20, and a substrate 30, wherein the driving layer 20 is disposed below the display layer 10, the substrate 30 is disposed below the driving layer 20, the substrate 30 includes a first film 31, a second film 32, and a third film 33, which are sequentially stacked and disposed away from the driving layer 20, a surface of the second film 32 is formed with an uneven microstructure 321, and the microstructure 321 is used to change a propagation path of light passing through the display layer 10 and the driving layer 20 to reduce or eliminate diffraction of the light passing through the display panel 100.

Specifically, the Display panel 100 of the embodiment of the present disclosure may be an Organic Light Emitting Display (OLED) panel, that is, an OLED panel, the Display layer 10 is an organic light emitting layer of the OLED panel, the driving layer 20 is a Thin Film Transistor (TFT) layer disposed below the organic light emitting layer, the driving layer 20 is configured to provide current to the Display layer 10 to achieve light emission, the driving layer 20 is formed with a plurality of traces (not shown) to form a plurality of driving currents to drive the Display layer 10 to emit light, and a small gap is formed between two adjacent traces. It is understood that in the embodiments of the present application, the display layer 10, the driving layer 20 and the substrate 30 are all transparent, that is, light can be incident from the display layer 10 of the display screen 100 and then exit from the substrate 30, and in some embodiments, in order to achieve high light transmittance, the driving layer 20 may be made of a material with high light transmittance, for example, indium tin oxide.

In the electronic equipment such as the cell-phone of correlation technique, in order to improve the screen and account for the ratio in order to realize comprehensive screen effect, can set up camera 200 in the below of display screen, camera 200 sees through the display screen and carries out optic fibre collection and shaping. However, since the wiring of the display screen is complex, when the external object reflected light is incident into the display screen, the incident light is diffracted due to the small gap of the wiring, and when the wiring distance is less than or equal to the optical wavelength, the light diffraction effect is caused, which affects the imaging quality of the camera 200. For example, as shown in fig. 4, in the related art, when the camera is placed below the display screen, since gaps between the wires of the driving layer are small, light emitted by an external light source may be diffracted when passing through the driving layer, so that an obvious diffraction spot exists in an image collected by the camera.

In the display panel 100 of the embodiment of the application, the uneven microstructure 321 is formed on the second film layer 32 of the substrate 30 below the driving layer 20, and the microstructure 321 can change the propagation path of the light after passing through the display layer 10 and the driving layer 20, that is, the diffracted light exiting from the driving layer 20 can be interfered and the propagation path thereof can be disturbed, so that the diffraction of the light passing through the display panel 100 can be reduced or eliminated as a whole to improve the imaging quality of the camera 200 placed below the display panel 100.

Specifically, in the embodiment of the present application, light emitted from an external light source may be diffracted when passing through the gap between the traces of the driving layer 20, and after the diffracted light enters the substrate 30, due to the presence of the uneven microstructure 321 on the second film layer 32, the microstructure 321 may change a propagation path of the diffracted light, that is, the propagation path of the diffracted light is disturbed, so as to reduce or eliminate diffraction of the light passing through the entire display screen 100.

It can be understood that, when there is not microstructure 321 on second film layer 32, light can take place diffraction phenomenon when passing the clearance between the line of drive layer 20, make the crest and the crest of light meet, trough and trough meet, thereby form the alternate stripe pattern of light and shade (as shown in fig. 4), after being provided with microstructure 321, the existence of microstructure 321 can break up the light after taking place the diffraction, thereby avoid the crest and the crest of light to meet, trough and trough meet, and then reach the purpose that reduces or eliminate the diffraction.

Of course, it will be understood that when light passes through other regions of the driving layer 20 except for the gaps between the traces, the light will not be diffracted, and since the intensity of the light passing through other regions of the driving layer 20 is higher, the light in other regions can substantially pass through the layer of the substrate 30 directly without affecting the imaging quality.

In the embodiments of the present disclosure, the first film 31, the second film 32, and the third film 33 are insulating layers, the first film 31 and the third film 33 may be organic layers, and the second film 32 may be inorganic layers, for example, in some embodiments, the first film 31 and the third film 33 may be PI (polyimide film) layers, and the second film 32 may be a silicon nitride layer or a silicon oxide layer.

Referring to fig. 2 and 3, in some embodiments, microstructure 321 includes a plurality of grooves 3211 formed on the surface of second film layer 32.

Therefore, light rays which are diffracted after passing through gaps among the wires of the driving layer 20 irradiate the grooves 3211, and the light propagation paths of the grooves 3211 are disturbed, so that diffraction is reduced or eliminated, and the imaging quality is improved.

Further, referring to fig. 2 and 3, in some embodiments, the width D of the groove 3211 ranges from 0.38um to 0.76 um.

Thus, setting the width D of the groove 3211 within the range of 0.38um to 0.76um may enable the groove 3211 to interfere and scatter all light in the visible band, thereby reducing or eliminating diffraction.

Specifically, in such an embodiment, the width D of the groove 3211 is preferably 0.5 um. Of course, in other embodiments, the width D of the groove 3211 may also be other dimensions, such as 0.4um, 0.45um, 0.55um, 0.6um, etc., which is not limited herein, and only the width D of the groove 3211 is within the above range.

It should be noted that the "width of the groove 3211" in this document may be understood as the peripheral dimension of the opening forming the groove 3211 on the second film layer 32, and the peripheral dimension may be understood as the diameter of the smallest circle that encompasses all of the openings of the groove 3211, for example, in the embodiment shown in fig. 2 and 3, the groove 3211 is a semicircular groove, and the width D of the groove 3211 is the diameter of the circle. It is understood that when the grooves 3211 are rectangular grooves, the width D may be the diameter of a circumscribed circle of the rectangle, and when the openings of the grooves 3211 are in an irregular pattern, the width D of the grooves 3211 is the diameter of the smallest circle that encloses the openings of the grooves 3211.

Referring to fig. 2 and 3, in some embodiments, the distance H between two adjacent grooves 3211 is 0.38um to 0.76 um.

Thus, the distance between two adjacent grooves 3211 is also within the wavelength range of visible light, and the protrusion formed between two grooves 3211 can disturb the propagation path of light diffracted from the driving layer 20, thereby reducing or eliminating diffraction.

Specifically, in such an embodiment, the plurality of grooves 3211 may be arranged in a rectangular array or in other shapes, and the spacing distances between two adjacent grooves 3211 may be the same or different, and are not limited herein.

In some embodiments, the driving layer 20 includes a plurality of traces (not shown), a gap is formed between each trace, the position of the groove 3211 corresponds to the gap between the traces, and the width D of the groove 3211 may be the same as the gap between the traces.

Thus, the grooves 3211 only disturb and disperse the light diffracted after passing through the gaps between the traces, and do not affect the propagation of the light in other areas.

Referring to fig. 5 and 6, in some embodiments, the second film layer 32 includes a first surface 322 and a second surface 323 opposite to each other, and the first surface 322 and the second surface 323 are formed with a plurality of grooves 3211.

Like this, can make light all can be to the propagation direction who changes light when passing first surface 322 and the second surface 323 of second rete 32 in proper order to light after the emergence diffraction produces many times irregular interference, promotes the interference effect to diffraction light.

It is understood that in other embodiments, the grooves 3211 (shown in fig. 2 and 3) may be formed only on the first surface 322 or the grooves 3211 may be formed only on the second surface 323, which is not limited herein, and only needs to irregularly interfere the diffracted light entering the second film layer 32 to change its propagation path.

Specifically, in the illustrated embodiment, the positions of the grooves 3211 formed on the first surface 322 correspond to the positions of the grooves 3211 formed on the second surface 323, and it is understood that in other embodiments, the positions of the grooves 3211 formed on the first surface 322 and the positions of the grooves 3211 formed on the second surface 323 may be staggered, and are not limited herein.

In some embodiments, the microstructure 321 includes a plurality of protrusions (not shown) formed on the surface of the second film layer 32.

In this manner, by forming a plurality of projections, it is also possible to disturb the diffracted light generated by passing through the driving layer 20, change the propagation path thereof, and reduce or eliminate diffraction.

Of course, it is understood that in some embodiments, the microstructure 321 may also include a plurality of protrusions and a plurality of grooves 3211, so that the light can be disturbed and disturbed to reduce or eliminate diffraction, which is not limited herein.

In particular, in such embodiments, the width of the protrusions may also range from 0.38um to 0.76 um. The width of the groove 3211 is preferably 0.5 um. It should be noted that the "width of the protrusion" herein may be understood as a peripheral dimension of the orthographic projection of the protrusion on the second film layer 32, and the peripheral dimension may be understood as a diameter of a smallest circle that includes the orthographic projection of the protrusion, for example, when the orthographic projection of the protrusion is a circle, the width of the protrusion is the diameter of the circle. When the orthographic projection of the protrusion is a rectangle, the peripheral dimension may be the diameter of a circumscribed circle of the rectangle, and when the orthographic projection of the protrusion is an irregular figure, the peripheral dimension is the diameter of the smallest circle that encloses the orthographic projection of the protrusion.

In some embodiments, adjacent protrusions are spaced apart by a distance of 0.38um to 0.76 um.

It will be understood that in such an embodiment, when the protrusions are formed, a groove is formed between two adjacent protrusions, the formed groove may also be equivalent to the groove of the above embodiment, and the spacing distance between two adjacent protrusions is the width of the groove between two adjacent protrusions.

In some embodiments, the substrate 30 has a thickness of 10um to 15um and the second film layer 32 has a thickness of 0.3um to 0.5 um.

Thus, the second film layer 32 occupies a very small proportion of the thickness of the entire substrate 30, so that the thicknesses of the first film layer 31 and the second film layer 32 can be much greater than the thickness of the second film layer 32, for example, the first film layer 31 can be 4um to 5um, and the thickness of the third film layer 33 can be 9um to 10um, so that, because the thicknesses of the first film layer 31 and the third film layer 33 are much greater than the thickness of the second film layer 32, when the display screen 100 is manufactured, the flatness of the display screen 100 is hardly affected by the presence of the uneven microstructure 321, and the manufacturing of the driving layer 20 of the display screen 100 is not disturbed.

In some embodiments, the microstructure 321 is formed by plasma bombardment on the second film layer 32.

In this way, the microstructure 321 formed by plasma bombardment can have a smaller size, for example, the grooves 3211 and the protrusions can have the smaller size range described above, and higher accuracy can be ensured.

It is understood that, in the present application, when forming the microstructure 321, the second film 32 may be formed on the third film 33 by deposition, and then the groove 3211 may be formed on the surface of the second film 32 by plasma bombardment, so as to form the microstructure 321.

Referring to fig. 7 and fig. 8, an electronic device 1000 according to an embodiment of the present disclosure includes the display screen 100 according to any one of the above embodiments and a camera 200 disposed below the display screen 100, and the microstructure 321 on the second film layer 32 of the display screen 100 at least partially covers the camera 200.

In the electronic device 1000 according to the embodiment of the present application, the uneven microstructures 321 are formed on the second film layer 32 of the substrate 30 below the driving layer 20, and the microstructures 321 can change the propagation path of the light after passing through the display layer 10 and the driving layer 20, that is, interfere with the diffracted light emitted from the driving layer 20, and disturb the propagation path thereof, so as to reduce or eliminate the diffraction of the light passing through the display screen 100 as a whole to improve the imaging quality of the camera 200 disposed below the display screen 100.

Specifically, referring to fig. 7 and 8, in such an embodiment, the display screen 100 may include a first display area 101 corresponding to the camera 200 and a second display area 102 located outside the camera 200, and the microstructure 321 is formed on the portion of the second film layer 32 corresponding to the first display area 101, so that the diffraction phenomenon may be reduced or eliminated by forming the microstructure 321 on the portion of the second film layer 32 corresponding to the first display area 101, thereby improving the imaging quality of the camera 200 and reducing the manufacturing cost. Of course, in other embodiments, the microstructure 321 may be formed on the entire second film layer 32, and is not limited herein.

In the description herein, reference to the description of the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art within the scope of the present application, which is defined by the claims and their equivalents.

Claims

1. A display screen, comprising:

a display layer;

a driving layer disposed below the display layer;

2. The display screen of claim 1, wherein the microstructures comprise a plurality of grooves formed on a surface of the second film layer.

3. A display screen in accordance with claim 2, wherein the width of the groove is 0.38um-0.76 um.

4. A display screen in accordance with claim 3, wherein the width of the groove is 0.5 um.

5. A display screen according to claim 3, wherein the distance between two adjacent grooves is 0.38um to 0.76 um.

6. A display screen according to any one of claims 2 to 5, wherein the second film layer comprises first and second opposed surfaces, the first and/or second surfaces being formed with a plurality of the recesses.

7. The display screen of claim 1, wherein the microstructures comprise a plurality of protrusions formed on the surface of the second film layer.

8. The display screen of claim 1, wherein the second membrane layer comprises a silicon nitride layer or a silicon oxide layer.

9. The display screen of claim 1, wherein the substrate is 10um-15um thick and the second film layer is 0.3um-0.5um thick.

10. The display screen of claim 1, wherein the microstructures are formed by plasma bombardment on the second film layer.

11. An electronic device, comprising:

the display screen of any one of claims 1-10; and