CN110727142B

CN110727142B - Polarizer, display screen and electronic equipment

Info

Publication number: CN110727142B
Application number: CN201911036782.3A
Authority: CN
Inventors: 杨鑫
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2023-04-28
Anticipated expiration: 2039-10-29
Also published as: CN110727142A

Abstract

The application discloses polaroid, display screen and electronic equipment. Specifically, the present application provides a polarizer, including: the light source comprises a first polarized light region and a second polarized light region, wherein the polarized light degree of the first polarized light region is larger than that of the second polarized light region, and the light reflectivity of the second polarized light region is not larger than 12%. Therefore, when the polaroid is used in a display screen of electronic equipment, the first polarized light region can be arranged corresponding to a main display region of the display screen, the polarized light degree of the first polarized light region is higher, the light transmittance and the light reflectivity of the main display region are small, and the display effect of the display screen can be improved; the second polarized light region can be arranged corresponding to optical devices such as an under-screen camera of the electronic equipment, the polarized light degree of the second polarized light region is smaller, but the light reflectivity of the second polarized light region is smaller, the light transmittance of a display screen of the corresponding region of the optical device is higher, the light reflectivity is smaller, and the service performance of the optical device is improved.

Description

Polarizer, display screen and electronic equipment

Technical Field

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

Background

With the continuous development of manufacturing technology in the field of electronic devices, many electronic devices (such as mobile phones) are equipped with front-facing cameras. At present, a technology (namely, an under-screen camera technology) of arranging a front camera below a display screen has been developed, and the technology can realize a higher screen occupation ratio, so that the appearance effect of electronic products such as mobile phones and the like can be improved, and the user experience is improved. In addition, a polarizer is generally arranged above the current display screen, and the polarizer can reduce reflection of light rays and the like and improve the display effect of the display screen.

However, current polarizers, display screens, and electronic devices remain to be improved.

Disclosure of Invention

The present application is made based on the discovery and recognition by the inventors of the following facts and problems:

in order to obtain higher screen duty ratio, the front camera is arranged below the display screen, the display screen comprises a main display area and an auxiliary display area corresponding to the front camera, and the auxiliary display area can be used for displaying and the camera arranged below the auxiliary display area can realize shooting function through the display screen. And the polarizer is arranged above the display screen, so that the reflection of light rays can be reduced, and the display effect of the display screen is improved. The inventor finds that the display screen has the problem that the display effect and the shooting effect cannot be considered, and influences the display performance, the shooting performance and the like of the electronic equipment. For example, in the above display screen, the polarizer generally covers the main display area and the auxiliary display area, while the polarizer can well reduce reflection of light and improve display effect of the display screen, at the same time, the polarizer also causes light transmittance reduction (usually lower than 50%), so that the polarizer can affect usability of optical devices such as a camera disposed below the auxiliary display area, and affect shooting effect. In some current methods, the position of the polarizer corresponding to the auxiliary display area is hollowed, although the light transmittance of the auxiliary display area can be improved, and the shooting effect of a camera and the like can be improved, the light reflectance of the auxiliary display area is still higher, the contrast ratio is reduced, the display effect of the auxiliary display area is poor, the display effects of the auxiliary display area and the main display area are not uniform, and the display performance of the display screen is affected. Therefore, if a new polarizer can be provided, the polarizer can not only enable the display screen to have good display effect, but also not affect the service performance of optical devices such as cameras under the screen, and the like, and the problems can be solved to a great extent.

The present application aims to solve, at least to some extent, one of the technical problems in the related art.

In one aspect of the present application, the present application proposes a polarizer comprising: the light source comprises a first polarized light region and a second polarized light region, wherein the polarized light degree of the first polarized light region is larger than that of the second polarized light region, and the light reflectivity of the second polarized light region is not larger than 12%. Therefore, when the polaroid is used in a display screen of electronic equipment, the first polarized light region can be arranged corresponding to a main display region of the display screen, the polarized light degree of the first polarized light region is higher, the light transmittance and the light reflectivity of the main display region are smaller, and the display effect of the display screen can be improved; the second polarized light region can be arranged corresponding to optical devices such as an under-screen camera of the electronic equipment, the polarized light degree of the second polarized light region is smaller, but the light reflectivity of the second polarized light region is also smaller, the light transmittance of a display screen of the corresponding region of the optical device is higher, the service performance of the optical device is improved, the light reflectivity is smaller, and the display performance of the display screen of the corresponding region of the optical device is also better.

In another aspect of the present application, the present application provides a display screen, comprising: a display panel including a main display area and an auxiliary display area; the polaroid, the polaroid sets up one side of display panel, the polaroid includes: the display device comprises a first polarized light region and a second polarized light region, wherein the polarized light degree of the first polarized light region is larger than that of the second polarized light region, the light reflectivity of the second polarized light region is not larger than 12%, the first polarized light region and the main display region are correspondingly arranged, and the second polarized light region and the auxiliary display region are correspondingly arranged. Therefore, the first polarized light region has higher polarized light degree, so that the light transmittance and the light reflectance of the main display region are small, and the display effect of the display screen can be improved; the second polarized light region has smaller polarization degree, but the second polarized light region has smaller light reflectivity, the auxiliary display region has higher light transmittance and smaller light reflectivity, the auxiliary display region has better display effect, and the use performance of optical devices such as cameras and the like corresponding to the auxiliary display region is also better.

In yet another aspect of the present application, an electronic device is presented. The electronic device includes: the display screen described above; and the optical device is arranged below the display screen and is arranged in a region corresponding to the auxiliary display region. Thus, the electronic device has all the features and advantages of the display screen described above, and will not be described herein. In general, the display performance of the electronic device and the usability of the optical device are both good.

Drawings

FIG. 1 shows a schematic structure of a polarizer according to an example of the present application;

FIG. 2 is a schematic cross-sectional view showing a polarizer according to an example of the present application;

FIG. 3 shows a schematic structural view of a display screen according to one example of the present application;

FIG. 4 is a schematic cross-sectional view of a display screen according to an example of the present application;

FIG. 5 shows a schematic cross-sectional structure of a display screen according to another example of the present application;

FIG. 6 shows a schematic cross-sectional structure of a display screen according to yet another example of the present application;

FIG. 7 shows a schematic cross-sectional structure of a display screen according to yet another example of the present application;

FIG. 8 shows a schematic structural diagram of an electronic device according to one example of the present application; and

fig. 9 shows a partial schematic structural view of an electronic device according to an embodiment of the present application.

Reference numerals illustrate:

100: a polarizer; 110: a first polarizing region; 120: a second polarizing region; 10: a substrate; 11: a first region; 12: a second region; 20: an anti-reflection layer; 200: a display panel; 210: a main display area; 220: an auxiliary display area; 300: a pressure-sensitive adhesive layer; 400: a cover plate; 500: a touch panel; 600: an optical device; 1100: an electronic device.

Detailed Description

Examples of the present application, which are illustrated in the accompanying drawings, are described in detail below. The examples described below by referring to the drawings are illustrative and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.

In one aspect of the present application, a polarizer is presented. According to some examples of the present application, referring to fig. 1, a polarizer 100 includes: the light source comprises a first polarized light region 110 and a second polarized light region 120, wherein the polarized light degree of the first polarized light region 110 is larger than that of the second polarized light region 120, and the light reflectivity of the second polarized light region 120 is not larger than 12%. Therefore, when the polarizer 100 is used in a display screen of an electronic device, the first polarizing region 110 may be disposed corresponding to a main display region of the display screen, and the first polarizing region 110 has a higher degree of polarization, and accordingly, the light transmittance and the light reflectance of the main display region of the display screen are smaller, so that the display effect of the display screen may be improved; the second polarizing region 120 may be disposed corresponding to an optical device such as a front camera of an electronic device, where the second polarizing region 120 has a smaller polarization degree, but the optical reflectivity of the second polarizing region is also smaller, and accordingly, the optical transmittance of the display screen of the region corresponding to the optical device is higher, so that the service performance of the optical device is improved (for example, the photographing effect of the camera is improved), and the optical reflectivity is smaller (the second polarizing region 120 of the polarizer 100 has a performance of absorbing reflected light, and the optical reflectivity of the second polarizing region 120 is smaller), and the display performance of the display screen of the region corresponding to the optical device is also better. Therefore, when the polarizer 100 is used in a display screen of an electronic device, the display screen has good display consistency and good display effect, and optical devices such as a front camera in the electronic device also have good usability.

For easy understanding, the principle by which the polarizer 100 can achieve the above-described advantageous effects will be briefly described as follows:

as described above, in order to increase the light transmittance of the auxiliary display area of the display screen (i.e., the area of the display screen corresponding to the optical device such as the camera), in some conventional methods, the position of the polarizer corresponding to the auxiliary display area is hollowed out, and the above method can increase the light transmittance of the auxiliary display area and can increase the photographing effect of the camera, but the light reflectance of the auxiliary display area is still high, which results in a decrease in contrast, and the display effect of the auxiliary display area is poor. Moreover, the inventors have found through intensive studies that, in the current display panels (for example, organic light emitting display panels), the cathode layer of the main display area is usually formed of a metal material, which has good conductivity but high reflectivity to light; in order not to affect the usability of optical devices such as cameras, the cathode layer of the auxiliary display area is usually made of transparent material, and although the reflectivity of light is small, the light is still reflected, which affects the overall display effect of the display screen. Therefore, the polaroid comprises the first polarized light area and the second polarized light area with different polarized light degrees, the polarized light degree of the first polarized light area is larger than that of the second polarized light area, and the first polarized light area and the main display area of the display screen are correspondingly arranged, so that the reflection and transmission of the cathode layer of the main display area to light rays can be well reduced, and the display effect is improved; the second polarized light region and the auxiliary display region of the display screen are correspondingly arranged, the polarization degree of the second polarized light region is smaller than that of the first polarized light region, and the light reflectivity of the second polarized light region is not more than 12%, namely, the second polarized light region has light absorption performance, the light reflectivity of the display screen corresponding to the second polarized light region can be reduced to a certain extent, and the light transmittance of the position corresponding to the second polarized light region is higher, so that the service performance of optical devices such as cameras can be improved. Therefore, when the polaroid is used in the display screen of the electronic equipment, the display consistency of the display screen is good, and the display effect of the display screen and the use performance of optical devices such as cameras can be considered.

According to some examples of the present application, the first polarizing region 110 may have a polarization degree greater than the second polarizing region 120, and the second polarizing region 120 may have a polarization degree greater than 0, i.e., the second polarizing region 120 may have a polarization degree that may reduce the light reflectivity of the display screen corresponding to the second polarizing region 120 to some extent. Specifically, the polarization degree of the first polarization region 110 may be greater than 95%, for example, may be greater than 96%, may be greater than 98%, may be greater than 99%, may even be 99.9%, and the like, so that the polarization degree of the first polarization region 110 is higher, and therefore, the light transmittance and the light reflectance of the main display region of the display screen may be better reduced, and the display effect of the display screen is improved. Specifically, the polarization degree of the second polarization region 120 may be more than 20% and less than 90%, for example, 25%, 30%, 40%, 50%, 60%, 70%, 80%, or the like, and thus, when the polarization degree of the second polarization region 120 is in the above range, the light reflectance of the auxiliary display region of the display screen may be preferably reduced (the light reflectance of the second polarization region 120 may be not more than 12%, for example, not more than 10%, not more than 8%, not more than 6%, not more than 5%, not more than 4%, not more than 3%, not more than 2%, not more than 1%, or the like), and the display effect of the auxiliary display region may be improved, and the light transmittance of the auxiliary display region may be made higher, and further, the usability of an optical device such as a camera disposed below the auxiliary display region may be improved.

As described above, since the reflectivity of the cathode layer of the auxiliary display region of the display screen to light is smaller than the reflectivity of the cathode layer of the main display region, the reflectivity of the cathode layer of the auxiliary display region to light can be reduced well in the above range (smaller than the reflectivity of the first polarizing region), and the light transmittance of the auxiliary display region can be increased, thereby improving the usability of optical devices such as cameras disposed below the auxiliary display region. Specifically, the light transmittance of the second polarizing region 120 may be greater than 45% and less than 80%, for example, may be 50%, may be 60%, may be 65%, may be 70%, may be 75%, and the like. Accordingly, the second polarizing region 120 has a high light transmittance, and accordingly, when the polarizer 100 is applied to a display screen of an electronic device, an auxiliary display region (i.e., a region corresponding to an optical device such as a camera) of the display screen has a high light transmittance, and the optical device such as a camera has good usability.

According to some examples of the present application, the light reflectivity of the second polarizing region 120 is not more than 12%, and in particular, the light reflectivity of the second polarizing region 120 may be 0, under which condition, referring to fig. 2, the polarizer 100 may further include: the substrate 10 and the anti-reflection layer 20 are provided, the substrate 10 is provided with a first area 11 and a second area 12, the first area 11 corresponds to the first polarized light area 110, the second area 12 corresponds to the second polarized light area 120, and the anti-reflection layer 20 is arranged on one side of the second area 12 away from the substrate 10. Thus, although the polarization degree of the second polarization region 120 is 0, the reflection of light cannot be reduced by the polarization performance, the anti-reflection layer 20 has a good light absorption performance, and the reflection of light can be reduced, so that the light reflectivity of the second polarization region 120 can be made not more than 12% by the anti-reflection layer 20. For example, when the optical filter 100 is used in a display screen, the ambient light is attenuated twice when passing through the anti-reflection layer 20 during the incident and emergent processes, and the reflected light at the optical devices such as the camera of the display screen corresponding to the second polarized light region 120 is greatly reduced, thereby further improving the display performance of the display screen. Specifically, the material, the preparation method, and the like of the antireflection layer 20 are not particularly limited, and the antireflection layer may be formed by, for example, dip-dyeing, or silk-screening, or spraying ink, or sputtering a coating film, or the like. Specifically, the light transmittance of the antireflection layer 20 may be more than 45% and less than 80%, for example, 50%, 60%, 65%, 70%, 75%, or the like. Accordingly, the second polarizing region 120 has a higher light transmittance, and accordingly, when the polarizer 100 is applied to a display screen of an electronic device, an auxiliary display region (i.e., a region corresponding to an optical device such as a camera) of the display screen has a higher light transmittance, and the optical device such as a camera has good usability; when the transmittance of the light reflection layer 20 is within the above range, the light reflection layer 20 can absorb the reflected light well, and the light reflectance of the second polarization region 120 can be made not more than 12%, i.e., the light reflectance of the second polarization region 120 can be made small.

According to some examples of the present application, the polarizer 100 may be a circular polarizer composed of a 1/4 wave plate superimposed on a common polarizer. After natural light is incident into the circular polarizer, the natural light is changed into linearly polarized light (P light) through the common polarizer, the linearly polarized light is changed into circularly polarized light through the 1/4 wave plate, the circularly polarized light is reflected by the bottom display screen, the reflected circularly polarized light is changed into linearly polarized light through the 1/4 wave plate, but the polarization state of the linearly polarized light is changed, the P light is changed into S light (the phase of the light is changed through the 1/4 wave plate twice), and the S light is absorbed by the common polarizer, so that the purpose of inhibiting the reflected light is achieved. Therefore, the polarizer 100 can well inhibit reflected light, improve the contrast of the display screen and improve the display effect of the display screen.

Specifically, the polarizer 100 may include a triacetyl cellulose (TAC) layer, a polyethylene glycol (PVA) layer, and a compensation film layer, which may be a 1/4 wavelength retardation film, sequentially stacked. Wherein, the cellulose triacetate layer may be a protective layer, and the polyethylene glycol layer may be impregnated with a solution containing a polyvalent iodide ion or a dichroic organic dye. Thereby, the usability of the polarizer 100 is further improved.

According to some examples of the present application, the polarizer 100 may be of an integrated structure, that is, the first polarizing region 110 and the second polarizing region 120 in the polarizer 100 may be integrated, for example, the polarizer 100 may include a substrate and a polarizing material layer (shown in the drawing) disposed on the substrate, and the first polarizing region 110 and the second polarizing region 120 may share one substrate, and the polarizing material layers may be different, so that the degrees of polarization of the first polarizing region 110 and the second polarizing region 120 may also be different. Therefore, when the polarizer 100 is applied to a display screen, the polarizer is convenient to attach, and the integrated degree of the display screen after the lamination is higher, and the appearance and the usability are better.

In another aspect of the present application, a display is presented. According to some examples of the present application, the display may include the polarizer described above, and thus, the display has all the features and advantages of the polarizer described above, which are not described herein. Referring to fig. 3 and 4 (fig. 4 is a schematic cross-sectional structure along AA' direction in fig. 3), according to some examples of the present application, the display screen 1000 includes: the display panel 200 and the polarizer 100, the polarizer 100 is disposed at one side of the display panel 200, the display panel 200 includes a main display area 210 and an auxiliary display area 220, and the polarizer 100 includes: the first polarizing region 110 and the second polarizing region 120, the first polarizing region 110 has a polarization degree greater than that of the second polarizing region 120, and the second polarizing region 120 has a light reflectance not greater than 12%, wherein the first polarizing region 110 and the main display region 210 are disposed correspondingly, and the second polarizing region 120 and the auxiliary display region 220 are disposed correspondingly. Thus, the first polarization region 110 has high polarization, so that the light transmittance and the light reflectance of the main display region 210 can be reduced, and the display effect of the display screen 1000 can be improved; the second polarizing region 120 has a smaller degree of polarization, but the second polarizing region has a smaller light reflectivity, the auxiliary display region 220 has a higher light transmittance and a smaller light reflectivity, the auxiliary display region 220 has a better display effect, and the auxiliary display region 220 has better usability of optical devices such as cameras.

According to some examples of the present application, as previously described, the cathode layer of the main display region 210 may be formed of a metal material, and the cathode layer of the auxiliary display region 220 may be formed of a transparent conductive material. Therefore, the light reflection in the main display area 210 is serious, the polarization degree of the first polarization area 110 is high, the light reflection in the main display area 210 can be well suppressed, and the display performance of the main display area 210 is improved; the light reflection of the auxiliary display area 220 is relatively low, and the polarization degree of the second polarization area 120 may be smaller than that of the first polarization area, so that the light reflection may be well suppressed, and the light transmittance of the auxiliary display area may be high, so that the usability of optical devices such as a camera disposed below the auxiliary display area 220 may be improved.

According to some examples of the present application, the first polarizing region 110 may have a polarization degree greater than the second polarizing region 120, and the second polarizing region 120 may have a polarization degree greater than 0, i.e., the second polarizing region 120 may have a polarization degree that may reduce the light reflectivity of the display screen corresponding to the second polarizing region 120 to some extent. Specifically, the light reflectivity of the second polarizing region 120 is not more than 12%. According to some examples of the present application, the polarization degree of the first polarization region 110 may be greater than 95%, for example, may be greater than 96%, may be greater than 98%, may be greater than 99%, may even be 99.9%, and the like, and thus, the polarization degree of the first polarization region 110 is higher, and may well reduce the light transmittance and the light reflectance of the main display region 210, and improve the display effect of the display screen 1000. According to some examples of the present application, the polarization degree of the second polarization region 120 may be greater than 20% and less than 90%, for example, may be 25%, may be 30%, may be 40%, may be 50%, may be 60%, may be 70%, may be 80%, and the like, and thus, when the polarization degree of the second polarization region 120 is in the above range, the light reflectivity of the auxiliary display region 220 of the display panel 200 may be preferably reduced, the display effect of the auxiliary display region 220 may be improved, and the light transmittance of the auxiliary display region 220 may be made higher, and thus the usability of an optical device such as a camera disposed below the auxiliary display region 220 may be improved. Specifically, the light transmittance of the second polarizing region 120 may be greater than 45% and less than 80%, for example, may be 50%, may be 60%, may be 65%, may be 70%, may be 75%, and the like. Thus, the second polarizing region 120 has a high light transmittance, and the auxiliary display region 220 of the display panel 200 has a high light transmittance, so that the usability of the optical device such as a camera is good.

As described above, in some display screens at present, the position of the polarizer corresponding to the auxiliary display area is hollowed out, and although the method can improve the light transmittance of the auxiliary display area and improve the shooting effect of the camera, the light reflectance of the auxiliary display area is still higher, which may cause a decrease in contrast, and the display effect of the auxiliary display area is poor. In this application, the second polarized light region corresponding to the auxiliary display region 220 also has a certain polarized light, and on the premise of keeping the light transmittance of the auxiliary display region 220 high, the light reflectance of the auxiliary display region 220 can be reduced, the display effect of the auxiliary display region 220 is improved, and the display consistency and display effect of the whole display screen 1000 are improved.

According to some examples of the present application, the light reflectivity of the second polarizing region 120 is not greater than 12%, specifically, the light reflectivity of the second polarizing region 120 may be 0, and under this condition, referring to fig. 5 (fig. 5 is a schematic view of a cross-sectional structure along the AA' direction in fig. 3), the polarizer 100 may further include: the substrate 10 and the anti-reflection layer 20 are provided, the substrate 10 is provided with a first area 11 and a second area 12, the first area 11 corresponds to the first polarized light area 110, the second area 12 corresponds to the second polarized light area 120, and the anti-reflection layer 20 is arranged on one side of the second area 12 away from the substrate 10. Thus, although the polarization degree of the second polarization region 120 is 0, the reflection of light cannot be reduced by the polarization performance, the anti-reflection layer 20 has a good light absorption performance, and the reflection of light can be reduced, so that the light reflectivity of the second polarization region 120 can be made not more than 12% by the anti-reflection layer 20. Thus, the ambient light is attenuated twice when passing through the anti-reflection layer 20 during the incident and emergent processes, and the reflected light at the auxiliary display area 220 of the display panel 200 corresponding to the second polarizing area 120 is greatly reduced, thereby further improving the display performance of the display screen 1000. Specifically, the material, the preparation method, and the like of the antireflection layer 20 are not particularly limited, and the antireflection layer may be formed by, for example, dip-dyeing, or silk-screening, or spraying ink, or sputtering a coating film, or the like. Specifically, the light transmittance of the antireflection layer 20 may be more than 45% and less than 80%, for example, 50%, 60%, 65%, 70%, 75%, or the like. As a result, the second polarization region 120 has a high light transmittance, the auxiliary display region 220 (i.e., a region corresponding to an optical device such as a camera) has a high light transmittance, the optical device such as a camera has good usability, and the second polarization region 120 has a low light reflectance. According to some examples of the present application, the polarizer 100 may be a circular polarizer. Thus, the polarizer 100 can well inhibit reflected light, improve contrast of the display panel 200, and improve display effect of the display screen 1000.

According to some examples of the present application, the polarizer 100 may be of an integrated structure, that is, the first polarizing region 110 and the second polarizing region 120 in the polarizer 100 may be integrated, so that the polarizer 100 and the display panel 200 are conveniently attached, and the display screen 1000 has a better appearance and usability.

According to some examples of the present application, the light reflectivity of display screen 1000 may be no greater than 12%, such as no greater than 10%, no greater than 8%, no greater than 6%, no less than 5%, such as no less than 4%, no less than 3.5%, no less than 3%, no less than 2.5%, no less than 2%, no less than 1.5%. May be less than 1%, etc. Accordingly, the display screen 1000 has low light reflectance, high contrast, and good display effect. It should be noted that, the light reflectivity of the display screen 1000 is not more than 12%, that is, the light reflectivity of the corresponding positions of the main display area 210 and the auxiliary display area 220 are all less than 10%, so that the light reflectivity of the whole display screen 1000 is low, the whole display effect is good, and the display uniformity is good.

According to some examples of the present application, referring to fig. 6, the display screen 1000 may further include: and a pressure-sensitive adhesive layer 300, the pressure-sensitive adhesive layer 300 being disposed on a side of the polarizer 100 near the display panel 200, the pressure-sensitive adhesive layer 300 may be formed of a pressure-sensitive adhesive (PSA), whereby the polarizer 100 and the display panel 200 may be easily attached by the pressure-sensitive adhesive layer 300.

According to some examples of the present application, referring to fig. 6, the display screen 1000 may further include: the cover plate 400 is disposed on one side of the polarizer 100 away from the display panel 200, specifically, the cover plate 400 may be a transparent cover plate, for example, a glass cover plate, etc., and the cover plate 400 may better protect the display screen 1000, thereby improving the usability and the use safety of the display screen 1000.

According to some examples of the present application, referring to fig. 7, the display screen 1000 may further include: the touch panel 500 is disposed on one side of the polarizer 100 away from the display panel 200, and thus, the display screen 1000 may further have a touch function, and when the touch panel 500 is used in an electronic device, the usability of the electronic device may be further improved. It should be noted that, the specific type of the touch panel 500 is not particularly limited, and the touch panel 500 may be provided separately or integrated In the display panel 200, for example, the touch panel 500 may be formed by an On-cell or In-cell method.

According to some examples of the present application, the specific type of the display panel 200 is not particularly limited, and the display panel 200 may include at least one of a liquid crystal display panel and an organic light emitting display panel, and thus, the display effect of the display panel 200 may be better improved by providing the polarizer 100 on the display panel 200.

In yet another aspect of the present application, an electronic device is presented. According to some examples of the present application, referring to fig. 8 and 9, an electronic device 1100 includes: the display screen 1000 and the optical device 600 described above, the optical device 600 is disposed below the display screen 1000, and the optical device 600 is disposed in the area corresponding to the auxiliary display area 220. Thus, the electronic device 1100 has all the features and advantages of the display 1000 described above, and will not be described herein. In general, the display performance of the electronic device 1100 and the usability of the optical device are both good.

The specific type of optical device 600 is not particularly limited as long as it requires light-transmitting operation, for example, the optical device 600 may be a camera, an optical transmitter, an optical receiver, a light sensor, a proximity sensor, or the like, according to some examples of the present application. Specifically, the optical device 600 may include a camera module, and the area of the second polarized light region 120 may be larger than the projected area of the field angle of the camera module. Therefore, in the area corresponding to the projection area of the field angle of the camera module, the light transmittance of the display screen 1000 is high, and the shooting effect of the camera module can be improved. Specifically, the area of the second polarizing region 120 may be 0.1mm ² -100mm ² . It should be noted that, when the aforementioned "projection area of the field angle" extends onto the polarizer 100 from two sides of the field angle of the camera module, the area defined on the polarizer 100 ("field angle" is an angle formed by two edges of the maximum range of the lens, where the lens of the camera module is used as the vertex, and the object image of the measured object passes through the lens).

By way of example, the electronic device may be any of a variety of types of computer system devices that are mobile or portable and that perform wireless communications. In particular, the electronic device may be a mobile phone or a smart phone, a portable gaming device, a laptop, a PDA, a portable internet device, a music player, and a data storage device, other handheld devices, and devices such as watches, in-ear headphones, pendants, headsets, etc., and may also be other wearable devices (e.g., a Head Mounted Device (HMD) such as an electronic glasses, an electronic garment, an electronic bracelet, an electronic necklace, an electronic tattoos, an electronic device, or a smart watch).

The electronic device may also be any of a number of electronic devices including, but not limited to, cellular telephones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders, video recorders, cameras, other media recorders, radios, medical devices, vehicle transportation equipment, calculators, programmable remote controls, pagers, laptop computers, desktop computers, printers, netbooks, personal Digital Assistants (PDAs), portable Multimedia Players (PMPs), moving picture experts group (MPEG-1 or MPEG-2) audio layer 3 (MP 3) players, portable medical devices, and digital cameras, and combinations thereof.

The following description of the embodiments of the present application is made by way of specific examples, which are provided to illustrate the present application and should not be construed to limit the scope of the present application. The examples are not to be construed as limiting the specific techniques or conditions described in the literature in this field or as per the specifications of the product.

Example 1

An organic light-emitting display panel is provided, wherein the display panel comprises a main display area and an auxiliary display area, the light reflectivity of the auxiliary display area is 20%, a polaroid is stuck on the upper surface of the auxiliary display area, the polarization degree of a first polarized light area of the polaroid is 99%, and the polarization degree of a second polarized light area is 70%, so that a display screen A is formed.

Example 2

Other structures were the same as in example 1 except that the second polarized light region had a polarization degree of 20% to form a display screen B.

Example 3

Other structures are the same as in example 1 except that the second polarized light region has a polarized light of 90% to form the display screen C.

Example 4

Other structures are the same as in example 1 except that the second polarized light region has a polarized light of 50% to form the display screen D.

Example 5

Other structures were the same as in example 1 except that the second polarizing region of the polarizer was 0 in polarization degree, and the second polarizing region of the polarizer was provided with an antireflection layer having a light transmittance of 65% to form a display screen E.

Comparative example 1

Other structures were the same as in example 1, except that the first polarized light region of the polarizer had a polarization degree of 99% and the second polarized light region had a polarization degree of 0, forming display F.

Comparative example 2

Other structures are the same as example 1 except that the second polarizing region of the polarizer is hollowed out, i.e., the polarizer covers only the main display region of the display panel, forming display G.

Comparative example 3

Other structures are the same as example 1 except that there is no area division on the polarizer, the polarization degree of the entire polarizer is 99%, and the polarizer covers the entire display panel, forming the display screen H.

Performance test:

light transmittance and light reflectance were measured for the display panels formed in examples 1 to 4 and comparative examples 1 to 3. The test results show that the light transmittance of the main display area of the display screen A in examples 1-4 is 42%, the light reflectance is 4%, the light transmittance of the main display area is lower, the light reflectance is also lower, and the display performance is better; the light transmittance and the light reflectance of the auxiliary display regions in test examples 1 to 4 and comparative examples 1 to 3 are referred to table 1.

Table 1: light transmittance and light reflectance data sheet for auxiliary display regions of the display panels in examples 1 to 4 and comparative examples 1 to 3

Test results show that the auxiliary display areas in examples 1-5 have good light transmittance and low light reflectance, so that when the display screen is used in electronic equipment, the display effect of the auxiliary display areas can be ensured, and optical devices such as cameras and the like positioned at corresponding positions of the auxiliary display areas can have good use performance. While the display panels of comparative examples 1 and 2 have higher light transmittance but have higher light reflectance, the contrast ratio of the auxiliary display area is poor, the display effect is poor, and the display uniformity of the entire display panel is poor. The display panel of comparative example 3 has a low light reflectance but also has a low light transmittance, and thus has poor usability of optical devices such as cameras located at positions corresponding to the auxiliary display regions. In summary, when the polarization degree of the second polarization region of the polarizer in the application is in the range of 20% -90%, the light transmittance of the auxiliary display region is higher, and optical devices such as cameras and the like positioned at the corresponding positions of the auxiliary display region have good service performance; and the light reflectivity of the auxiliary display area is lower, so that the display screen has a better display effect.

In the description herein, the descriptions of the terms "example," "some examples," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the example or example is included in at least one example or instance of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same example or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more examples or examples. Furthermore, different examples or examples described in this specification and features of different examples or examples may be combined and combined by those skilled in the art without contradiction.

While examples of the present application have been shown and described above, it will be understood that the above examples are illustrative and not to be construed as limiting the present application, and that variations, modifications, alternatives, and variations may be made to the above examples by one of ordinary skill in the art within the scope of the present application.

Claims

1. A polarizer suitable for use in an optical device, comprising:

a first polarizing region and a second polarizing region, wherein the first polarizing region has a polarization degree greater than that of the second polarizing region, and the second polarizing region has a light reflectance of not more than 12%,

wherein the optical device is arranged in a region corresponding to the second polarized light region, the optical device comprises a camera module, the area of the second polarized light region is larger than the projection area of the view angle of the camera module,

wherein the second polarized light area has a polarization degree of 0, and the polarizer comprises: the substrate is provided with a first area and a second area, the first area corresponds to the first polarized light area, the second area corresponds to the second polarized light area, the anti-reflection layer is arranged on one side, far away from the substrate, of the second area, and the light transmittance of the anti-reflection layer is more than 45% and less than 80%.

2. The polarizer of claim 1, wherein the first polarized light region has a degree of polarization of greater than 95%.

3. The polarizer of claim 1, wherein the polarizer comprises a circular polarizer.

4. The polarizer of claim 1, wherein the polarizer comprises a triacetate cellulose layer, a polyethylene glycol layer, and a compensation film layer, which are sequentially stacked, wherein the compensation film layer is a 1/4 wavelength retardation film.

5. The polarizer of claim 1, wherein the polarizer is of unitary construction.

6. A display screen, comprising:

a display panel including a main display area and an auxiliary display area;

the polarizer of any one of claims 1-5, the polarizer disposed on one side of the display panel, the first polarizing region and the primary display region in the polarizer disposed correspondingly, and the second polarizing region and the secondary display region disposed correspondingly.

7. The display screen of claim 6, wherein the cathode layer of the main display area is formed of a metallic material and the cathode layer of the auxiliary display area is formed of a transparent conductive material.

8. The display screen of claim 6, further comprising:

the pressure-sensitive adhesive layer is arranged on one side of the polaroid close to the display panel;

the cover plate is arranged on one side of the polaroid, which is far away from the display panel;

the touch panel is arranged on one side of the polaroid away from the display panel.

9. An electronic device, comprising:

a display screen according to any one of claims 6 to 8;

and the optical device is arranged below the display screen and is arranged in a region corresponding to the auxiliary display region.