CN114545678A

CN114545678A - Display device and mobile terminal

Info

Publication number: CN114545678A
Application number: CN202210328378.9A
Authority: CN
Inventors: 王清娟
Original assignee: Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd
Current assignee: Guangzhou China Star Optoelectronics Semiconductor Display Technology Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-05-27

Abstract

In the application provides a display device and mobile terminal, including semi-transparent half-reflection membrane and backlight, under the darker environment of light, can open the backlight, all regard backlight and reflection ambient light as display device's light source to can avoid leading to reflection ambient light can't satisfy the demand that display device shows because of external environment is darker. Under the bright environment of light, can close the backlight, only rely on reflection ambient light to come as display device's light source, because external ambient light is bright, reflection ambient light can satisfy the demand that display device shows, because of can't open the backlight to can reduce the consumption, improve the time of endurance, be fit for outdoor demonstration.

Description

Display device and mobile terminal

Technical Field

The application relates to the field of display, in particular to a display device and a mobile terminal.

Background

The display device is an active matrix liquid crystal display driven by thin film transistor, and it mainly uses current to stimulate liquid crystal molecule to produce point, line and surface to match with back lamp tube to form picture, so that the existing display device is generally a non-active light-emitting electronic device, and does not have light-emitting characteristic, and it must use other light sources to obtain display performance. For example, reflective display devices rely on reflecting ambient light to achieve display performance.

Wherein, because reflective display device not only does not give out light but also does not set up the backlight, consequently reflective display device consumption is lower to can possess longer time of endurance, the effect is better under the sunshine moreover, healthy eyeshield is fit for outdoor demonstration.

However, since the reflective display device obtains display performance by reflecting ambient light, the reflective display device has poor display effect in an environment with poor light.

Therefore, how to reduce the power consumption of the display device on the basis of ensuring the display effect of the existing display device is a difficulty that panel manufacturers all over the world are struggling to overcome.

Disclosure of Invention

The application provides a display device, can solve and solve the technical problem that current display device can't reduce display device's consumption on the basis of display effect.

An embodiment of the present application provides a display device, including:

a backlight source;

a first polarizing layer disposed on the backlight;

the array substrate is arranged on one surface, far away from the backlight source, of the first polarizing layer;

the semi-transparent semi-reflective film is arranged on one surface of the array substrate, which is far away from the backlight source;

the liquid crystal layer is arranged on one surface, far away from the backlight source, of the semi-transparent and semi-reflective film;

the color film substrate is arranged on one surface of the liquid crystal layer, which is far away from the backlight source;

and the second polarizing layer is arranged on one surface of the color film substrate, which is far away from the backlight source.

In the display device provided by the application, the first polarizing layer comprises a polarizing plate and a first phase difference plate which are arranged in a stacked mode, and the first phase difference plate is arranged on one surface, away from the backlight source, of the polarizing plate.

In the display device provided in the embodiment of the present application, the second polarizing layer includes a second phase difference film, and the second phase difference film is disposed on one surface of the color film substrate, which is far away from the backlight source.

In the display device provided in the embodiment of the present application, the first phase difference plate and the second phase difference plate are both quarter-wave phase difference plates.

In the display device provided by the embodiment of the application, the first polarizing layer includes a polarizing plate and a first phase difference plate which are stacked, and the polarizing plate is disposed on a surface of the first phase difference plate, which is far away from the backlight source.

In the display device that this application embodiment provided, the transflective film includes first transflective film and the second transflective film of first range upon range of setting, the second transflective film sets up first transflective film is kept away from the one side of array substrate, the reflectivity of first transflective film is greater than the reflectivity of second transflective film.

In the display device provided by the embodiment of the application, the array substrate includes a substrate and an array layer, which are stacked, and the array layer is disposed on a surface of the substrate away from the backlight source.

In the display device provided by the embodiment of the application, the array layer comprises a thin film transistor and a photosensitive transistor, the thin film transistor is used for controlling liquid crystal deflection, and the photosensitive transistor is used for detecting the brightness of external environment light.

In the display device provided in the embodiment of the present application, the display device further includes a multilayer film reflective polarizer disposed between the backlight source and the first polarizing layer.

The embodiment of the application further provides a mobile terminal, which comprises a terminal main body and the display device, wherein the terminal main body and the display device are combined into a whole.

In display device and mobile terminal that this application provided, including semi-transparent half-reflecting film and backlight, under the darker environment of light, can open the backlight, all regard backlight and reflection ambient light as display device's light source to can avoid leading to reflection ambient light can't satisfy the demand that display device shows because of external environment is darker. Under the bright environment of light, can close the backlight, only rely on reflection ambient light to come as display device's light source, because external ambient light is bright, reflection ambient light can satisfy the demand that display device shows, because of can't open the backlight to can reduce the consumption, improve the time of endurance, be fit for outdoor demonstration.

Drawings

In order to more clearly illustrate the technical solutions in the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first implementation manner of a display device provided in an embodiment of the present application.

Fig. 2 is a schematic light propagation diagram of the display device in a normal display state according to the embodiment of the present disclosure.

Fig. 3 is a schematic view illustrating light propagation when the display device provided by the embodiment of the present application is in an enhanced display state.

Fig. 4 is a schematic light propagation diagram of a display device in a closed state according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram of a second implementation manner of a display device according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a third implementation of a display device according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a fourth implementation manner of a display device provided in an example of the present application.

Fig. 8 is a schematic structural diagram of a fifth implementation manner of a display device according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a sixth implementation manner of a display device provided in an example of the present application.

Fig. 10 is a schematic structural diagram of a seventh implementation manner of a display device according to an embodiment of the present application.

Fig. 11 is a schematic structural diagram of a mobile terminal according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, are within the scope of protection of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present disclosure. As shown in fig. 1, a display device provided in an embodiment of the present application includes: the liquid crystal display panel comprises a backlight 101, a first polarizing layer 102, an array substrate 103, a transflective film 104, a liquid crystal layer 105, a color film substrate 106 and a second polarizing layer 107. The backlight 101 includes a first surface and a second surface opposite to each other. The first polarizing layer 102 is disposed on the backlight 101. The array substrate 103 is disposed on a surface of the first polarizing layer 102 away from the backlight 101. The transflective film 104 is disposed on a surface of the array substrate 103 away from the backlight 101. The liquid crystal layer 105 is disposed on a side of the transflective film 104 remote from the backlight 101. The color filter substrate 106 is disposed on a surface of the liquid crystal layer 105 away from the backlight 101. The second polarizing layer 107 is disposed on a surface of the color filter substrate 106 away from the backlight 101.

The first surface may be an upper surface of the backlight 101, and the second surface may be a lower surface of the backlight 101. Of course, the first surface may also be the lower surface of the backlight 101, and the second surface may be the upper surface of the backlight 101. In the present invention, unless otherwise specified, the first surface is the upper surface of the backlight 101 and the second surface is the lower surface of the backlight 101.

It should be noted that the display device 10 includes an off state, a normal display state, and an enhanced display state. When the display device 10 is in the off state, the backlight 101 is in the off state and the liquid crystal molecules in the liquid crystal layer 105 are in a stable state, or the backlight 10 is in the on state and the liquid crystal molecules in the liquid crystal layer 105 are in a stable state. When the display device 10 is in the normal display state, the backlight 101 is in the off state, and the liquid crystal molecules in the liquid crystal layer 105 are in the deflected state. When the display device 10 is in the enhanced display state, the backlight 101 is in the on state, and the liquid crystal molecules in the liquid crystal layer 105 are in the deflected state.

Note that when the backlight 101 is in the off state, the backlight 101 does not emit backlight, and when the backlight 101 is in the on state, the backlight 101 emits backlight. When the liquid crystal molecules in the liquid crystal layer 105 are in a stable state, the liquid crystal layer 105 cannot twist the light passing through the liquid crystal layer 105, so that the light passing through the liquid crystal layer 105 is absorbed by the second polarizing layer 107. When the liquid crystal molecules in the liquid crystal layer 105 are under deflection, the liquid crystal layer 105 twists the light passing through the liquid crystal layer 105, so that the light passing through the liquid crystal layer 105 cannot be absorbed by the second polarizing layer 107.

When the ambient light from the outside is strong, the display device 10 can be adjusted to be in a normal display state. At this time, the liquid crystal molecules in the liquid crystal layer 105 are in a deflected state, and the external ambient light is twisted by the liquid crystal molecules in the liquid crystal layer 105; and is reflected by the transflective film 104 to be emitted from the second polarizing layer 107 so that the external ambient light serves as a light source of the display device 10.

However, since the ambient light from the outside is twisted by the liquid crystal molecules in the liquid crystal layer 105, the ambient light from the outside can be reflected by the transflective film 104 and then emitted from the second polarizing layer 107. Secondly, because the external ambient light is strong, the external ambient light can be used as the light source of the display device 10 after being reflected by the transflective film 104, so that the display device can normally display, and because the external ambient light is used as the light source of the display device 10, the effect of protecting eyes healthily can be achieved. In addition, the backlight 101 is in the off state, and the backlight 101 cannot emit light, so that the power consumption of the display device 10 can be reduced, the endurance time of the display device 10 can be prolonged, and the outdoor use is facilitated.

When the ambient light from the outside is weak, the display device 10 may be adjusted to be in an enhanced display state. At this time, the liquid crystal molecules in the liquid crystal layer 105 are in a deflected state, and the backlight 101 is in an open state, and firstly, the external ambient light is twisted by the liquid crystal molecules in the liquid crystal layer 105; and is reflected by the transflective film 104 to be emitted from the second polarizing layer 107 so that the external ambient light serves as a light source of the display device 10. Second, the backlight 101 may emit backlight, which is twisted by the liquid crystal molecules in the liquid crystal layer 105 and finally emitted from the second polarizing layer 107, so that the backlight serves as a light source of the display device 10.

In addition, since both the ambient light and the backlight are twisted by the liquid crystal molecules in the liquid crystal layer 105, both the ambient light and the backlight can be emitted from the second polarizing layer 107. Secondly, since the ambient light from the outside is weak, the ambient light from the outside may not be used as the light source of the display device 10 after being reflected by the transflective film 104, but due to the existence of the backlight, the backlight and the ambient light from the outside are used as the light source of the display device 10, which is enough to satisfy the display requirement of the display device 10. The display device 10 provided by the embodiment of the application can be used under the condition that the external ambient light is dark, so that the universality of the display device 10 is improved, and the display device 10 is favorably used outdoors.

Wherein, when the display device 10 is not needed to be used, the display device 10 can be adjusted to be in a closed state. At this time, the liquid crystal molecules in the liquid crystal layer 105 are in a steady state, and the backlight 101 is in an on state or an off state. First, since the external ambient light is not twisted by the liquid crystal molecules in the liquid crystal layer 105, the external ambient light reflected by the transflective film 104 is absorbed by the second polarizing layer 107. Second, since the backlight is not twisted by the liquid crystal molecules in the liquid crystal layer 105, the backlight is absorbed by the second polarizing layer 107.

It should be noted that, ambient light from the outside and the backlight are absorbed by the second polarizing layer 107, so that the display device 10 is in a non-display state. In addition, when the display device 10 is in the off state, the backlight 101 is generally in the off state, so that power consumption of the display device 10 is reduced, the endurance of the display device 10 is improved, and the display device is more favorable for outdoor use.

It should be noted that the transflective film 104 provided in the embodiment of the present application is not divided into a transmissive region and a reflective region, and all regions of the transflective film 104 are transmissive regions, that is, reflective regions. And the transflective film 104 completely covers the pixel opening area, realizing the functions of transmission and reflection in hundred percent. Therefore, the utilization rate of the display device 10 to light can be improved, the power consumption of the display device 10 is further reduced, and the outdoor use is facilitated.

Wherein, the light loss rate of the external ambient light reaching the transflective film 104 is 45% to 55%. Specifically, the light loss rate of the external ambient light reaching the transflective film 104 is 45%, 46%, 48%, 50%, 52%, or 55%.

In the display device 10 provided in the embodiment of the present application, the transmittance of the external ambient light reaching the transflective film 104 is 45% to 55%. Approximately half of the ambient light from the outside can penetrate through the transflective film 104 and be reflected by the transflective film 104 to serve as the light source of the display device 10.

Wherein, the loss rate of the light emitted from the second polarizing layer 107 after the external ambient light is reflected by the transflective film 104 is 72.5 to 77.5%. Specifically, the loss ratio of light emitted from the second polarizing layer 107 after the external ambient light is reflected by the transflective film 104 is 72.5%, 73.5%, 75.5%, or 77.5%.

Wherein, the loss rate of the light emitted from the second polarizing layer 107 after the external ambient light is reflected by the transflective film 104 is 72.5% to 77.5%. Specifically, ambient light from the outside is reflected by the transflective film 104, and then the light emitted from the second polarizing layer 107 has a transmittance of 22.5% to 27.5%.

In the display device 10 according to the embodiment of the present application, ambient light reflected by the transflective film 104 from the outside transmits light from the second polarizing layer 107 in a transmittance of 22.5% to 27.5%. Therefore, in the display device 10 provided in the embodiment of the present application, the utilization rate of the external ambient light reaches 22.5% to 27.5%, whereas in the existing reflective display device, the utilization rate of the external ambient light is only about 10%, so that the display device 10 provided in the present application has a better outdoor display effect, and is beneficial to outdoor use.

Referring to fig. 2, fig. 2 is a schematic view illustrating light propagation when the display device provided by the embodiment of the present application is in a normal display state. As shown in fig. 2, when the display device 10 is in a normal display state, liquid crystal molecules in the liquid crystal layer 105 are in a polarization state, and external ambient light sequentially passes through the second polarizing layer 107 and the color filter substrate 106 to become circularly polarized light; then passes through the liquid crystal layer 105, being twisted by liquid crystal molecules in the liquid crystal layer 105; then, the light is transmitted to the transflective film 104 and is reflected by the transflective film 104; and then passes through the liquid crystal layer 105 again; and finally, the light passes through the color film substrate 106 and the second polarizing layer 107 in sequence to be emitted.

However, since the ambient light from the outside is twisted by the liquid crystal molecules in the liquid crystal layer 105, the ambient light from the outside can be reflected by the transflective film 104 and then emitted from the second polarizing layer 107. Secondly, because the external ambient light is strong, the external ambient light can be used as the light source of the display device 10 after being reflected by the transflective film 104, so that the display device can normally display, and because the external ambient light is used as the light source of the display device 10, the effect of protecting eyes healthily can be achieved. In addition, the backlight 101 is in the off state, and the backlight 101 cannot emit light, so that power consumption of the display device 10 can be reduced, the endurance time of the display device 10 can be prolonged, and the outdoor use is facilitated.

Referring to fig. 3, fig. 3 is a schematic view illustrating light propagation when the display device provided by the embodiment of the present application is in an enhanced display state. As shown in fig. 3, when the display apparatus 10 is in the enhanced display state. At this time, the liquid crystal molecules in the liquid crystal layer 105 are in a polarization state, and the backlight 101 is in an on state, in the first case, external ambient light sequentially passes through the second polarizing layer 107 and the color film substrate 106 to become circularly polarized light; then passes through the liquid crystal layer 105, being twisted by liquid crystal molecules in the liquid crystal layer 105; then, the light is transmitted to the transflective film 104 and is reflected by the transflective film 104; and then passes through the liquid crystal layer 105 again; and finally, the light passes through the color film substrate 106 and the second polarizing layer 107 in sequence to be emitted. Second, the backlight 101 may emit backlight, which first passes through the first polarizing layer 102 to become circularly polarized light, then sequentially passes through the array substrate 103, the transflective film 104 and the liquid crystal layer 105, is twisted by liquid crystal molecules in the liquid crystal layer 105, and finally sequentially passes through the color film substrate 106 and the second polarizing layer 107 to be emitted.

Referring to fig. 4, fig. 4 is a schematic view illustrating light propagation when the display device provided by the embodiment of the present application is in a closed state. As shown in fig. 4, when the display device 10 is in the closed state. At this time, the liquid crystal molecules in the liquid crystal layer 105 are in a steady state, and the backlight 101 is in an on state or an off state. Firstly, the external ambient light sequentially passes through the second polarizing layer 107 and the color film substrate 106 to become circularly polarized light; then through the liquid crystal layer 105; then, the light is transmitted to the transflective film 104 and is reflected by the transflective film 104; and then passes through the liquid crystal layer 105 again; finally, the ambient light sequentially passes through the color film substrate 106 and the second polarizing layer 107, and is absorbed by the second polarizing layer 107 because the ambient light is not twisted by the liquid crystal molecules in the liquid crystal layer 105. Secondly, the backlight firstly passes through the first polarizing layer 102 to become circularly polarized light, and then sequentially passes through the array substrate 103, the transflective film 104, the liquid crystal layer 105, the color film substrate 106 and the second polarizing layer 107, and the backlight is not twisted by the liquid crystal molecules in the liquid crystal layer 105, and thus is absorbed by the second polarizing layer 107.

Specifically, please refer to fig. 5, wherein fig. 5 is a schematic structural diagram of a second implementation manner of the display device according to the embodiment of the present disclosure. As shown in fig. 5, the display device 10 shown in fig. 5 is different from the display device 10 shown in fig. 1 in that the first polarizing layer 102 includes a polarizer 1021 and a first phase difference sheet 1022, which are stacked, and the first phase difference sheet 1022 is disposed on a surface of the polarizer 1021 away from the backlight 101. The second polarizing layer 107 includes a second phase difference film 1071, and the second phase difference film 1071 is disposed on a surface of the color filter substrate 106 away from the backlight 101.

The first phase difference plate 1022 and the second phase difference plate 1071 are quarter-wave phase difference plates. It should be noted that when the liquid crystal molecules in the liquid crystal layer 105 are in a stable state, the polarization angle passing through the liquid crystal layer 105 is not changed. Therefore, when the external ambient light passes through the second phase difference plate 1071, the external ambient light is deflected by 45 degrees, is deflected by 90 degrees again after being reflected by the transflective film 104, and is still deflected by 45 degrees after passing through the second phase difference plate 1071 again, so as to be absorbed by the second phase difference plate 1071. When the liquid crystal molecules in the liquid crystal layer 105 are in the polarization state, the polarization angle passing through the liquid crystal layer 105 is changed, so that the stable circulation can be disturbed, and the external environment light can be emitted from the second phase difference plate 1071.

Similarly, when the liquid crystal molecules in the liquid crystal layer 105 are in a steady state, the polarization angle through the liquid crystal layer 105 is not altered. Therefore, the backlight is deflected by 90 degrees when passing through the polarizer 1021, 45 degrees when passing through the first phase difference plate, and 45 degrees again when passing through the second phase difference plate 1071, and is absorbed by the second phase difference plate 1071. When the liquid crystal molecules in the liquid crystal layer 105 are in the polarization state, the polarization angle passing through the liquid crystal layer 105 is changed, so that the stable cycle can be disturbed, and the backlight can be emitted from the second phase difference plate 1071.

Note that, both the first phase difference plate 1022 and the second phase difference plate 1071 may be three-quarter-wave phase difference plates. When the first phase difference plate 1022 and the second phase difference plate 1071 may be both three-quarter wavelength phase difference plates, it is sufficient that the ambient light is reflected by the transflective film 104 and the backlight is absorbed by the second phase difference plate 1071. Therefore, the first phase difference plate 1022 and the second phase difference plate 1071 may be provided in other ways as long as the ambient light is reflected by the transflective film 104 and the backlight can be absorbed by the second phase difference plate 1071.

Specifically, please refer to fig. 6, wherein fig. 6 is a schematic structural diagram of a display device according to a third embodiment of the present disclosure. As shown in fig. 6, the display device 10 shown in fig. 6 is different from the display device 10 shown in fig. 5 in that a polarizer 1021 is disposed on a side of the first phase difference sheet 1022 away from the backlight 101, as shown in fig. 6.

It should be noted that when the liquid crystal molecules in the liquid crystal layer 105 are in a stable state, the polarization angle passing through the liquid crystal layer 105 is not changed. Therefore, when the external ambient light passes through the second phase difference plate 1071, the external ambient light is deflected by 45 degrees, is deflected by 90 degrees again after being reflected by the transflective film 104, and is still deflected by 45 degrees after passing through the second phase difference plate 1071 again, so as to be absorbed by the second phase difference plate 1071. When the liquid crystal molecules in the liquid crystal layer 105 are in the polarization state, the polarization angle passing through the liquid crystal layer 105 is changed, so that the stable circulation can be disturbed, and the external environment light can be emitted from the second phase difference plate 1071.

Similarly, when the liquid crystal molecules in the liquid crystal layer 105 are in a steady state, the polarization angle through the liquid crystal layer 105 is not altered. Therefore, the backlight is deflected by 45 degrees when passing through the first phase difference plate 1022, 90 degrees when passing through the polarizer 1021, and 45 degrees again when passing through the second phase difference plate 1071, thereby being absorbed by the second phase difference plate 1071. When the liquid crystal molecules in the liquid crystal layer 105 are in the polarization state, the polarization angle passing through the liquid crystal layer 105 is changed, so that the stable cycle can be disturbed, and the backlight can be emitted from the second phase difference plate 1071.

Therefore, changing the relative position between the first phase difference film 1022 and the polarizer 1021 does not affect the display of the display device 10. However, changing the relative position relationship between the first retardation film 1022 and the polarizer 1021 to dispose the polarizer 1021 on the side of the first retardation film 1022 away from the backlight 101 can facilitate the manufacturing of the display device 10 and reduce the manufacturing cost of the display device 10.

Specifically, please refer to fig. 7, and fig. 7 is a schematic structural diagram of a fourth implementation manner of a display device according to an embodiment of the present application. As shown in fig. 7, the display device 10 shown in fig. 7 is different from the display device 10 shown in fig. 5 in that the transflective film 104 includes a first transflective film 1041 and a second transflective film 1042, which are stacked. And the second transflective film 1042 is disposed on a side of the first transflective film 1041 away from the array substrate 104.

It should be noted that the reflectivity of the first transflective film 1041 is greater than the reflectivity of the second transflective film 1042, so that the amount of the external ambient light reflected back can be increased, the reflectivity of the external ambient light can be increased, the display effect of the display device 10 can be improved, the power consumption of the display device 10 can be reduced, the endurance time of the display device 10 can be increased, and the outdoor use can be facilitated.

It should be noted that the reflectivity of the first transflective film 1041 may also be equal to the reflectivity of the second transflective film 1042.

Specifically, referring to fig. 8, fig. 8 is a schematic structural diagram of a fifth implementation manner of a display device according to an embodiment of the present application, and as shown in fig. 8, a difference between a display device 10 illustrated in fig. 8 and a display device 10 illustrated in fig. 7 is that: the array substrate 103 includes a substrate 1031 and an array layer 1032 disposed on the substrate 1031, and the array layer 1032 is disposed on the surface of the substrate 1031 away from the backlight 101.

Here, the array layer 1032 is used to control the liquid crystal molecule deflection of the liquid crystal layer 105. Specifically, when it is required to make the liquid crystal molecules in the liquid crystal layer 105 in a deflected state, the array layer 1032 is driven by a voltage to form electric fields on the upper and lower sides of the liquid crystal layer 105, thereby controlling the deflection of the liquid crystal molecules of the liquid crystal layer 105. And the deflected liquid crystal molecules may twist light incident to the liquid crystal layer 105.

Specifically, referring to fig. 9, fig. 9 is a schematic structural diagram of a sixth implementation manner of a display device provided in an embodiment of the present application, and as shown in fig. 9, a difference between a display device 10 in fig. 9 and a display device 10 in fig. 8 is: the array layer 1032 includes a thin film transistor 1031a and a light sensing transistor 1032b, the thin film transistor 1031a is used for controlling liquid crystal deflection, and the light sensing transistor 1032b is used for detecting the brightness of the external environment light.

When it is necessary to make the liquid crystal molecules in the liquid crystal layer 105 in a deflected state, the thin film transistors 1031a are driven by a voltage to form electric fields on the upper and lower sides of the liquid crystal layer 105, so as to control the deflection of the liquid crystal molecules in the liquid crystal layer 105. And the deflected liquid crystal molecules may twist light incident to the liquid crystal layer 105.

The photo transistor 1032b is used for detecting the brightness of the external ambient light. When the brightness of the external ambient light is less than the preset threshold, the backlight 101 is turned on, and when the brightness of the external ambient light is greater than or equal to the preset threshold, the backlight 101 is turned off.

It should be noted that, when the brightness of the external environment light is smaller than the preset threshold, the light sensing transistor 1032b will detect that the external environment is in a dark light state, and the external environment light is not enough to be used as the light source of the display device 10, so that the backlight 101 needs to be turned on, so that the external environment light and the backlight emitted by the backlight 101 are both used as the light source of the display device 10, so as to meet the display requirement of the display device 10. When the brightness of the external ambient light is greater than or equal to the preset threshold, the light sensing transistor 1032b will detect that the external ambient light is in a bright light state, and the external ambient light is enough to be used as the light source of the display device 10, so that the display requirement of the display device 10 can be met without turning on the backlight 101 and the external ambient light is used as the light source of the display device 10, thereby reducing the power consumption of the display device 10.

Wherein the preset threshold is 80 to 120 lumens. In particular, the preset threshold is 80, 85, 90, 95, 100, 110 or 120 lumens. The preset threshold is used for determining the intensity of the external ambient light, and therefore the preset threshold must be changed with different application products, different usage modes and different usage environments of the display device 10, and the specific value of the preset threshold is determined by the specific application product, the specific usage mode and the specific usage environment of the display device 10.

Specifically, referring to fig. 10, fig. 10 is a schematic structural diagram of a seventh implementation manner of a display device according to an embodiment of the present application, and as shown in fig. 10, a difference between the display device 10 in fig. 10 and the display device 10 in fig. 9 is: the display device 10 also includes a multilayer film reflective polarizer 108. The multilayer film reflective polarizer 108 is disposed between the backlight 101 and the first polarizing layer 102.

It should be noted that, when the backlight of the backlight 101 serves as a light source, since the array layer 1032 includes a metal material and has a certain reflective capability, a part of the backlight emitted by the backlight 20 is reflected by the array layer 1032. The multilayer reflective polarizer 108 is arranged, so that the backlight reflected by the array layer 1032 can be reflected again for recycling, and the multilayer reflective polarizer 108 is a novel film layer, which can reflect ambient light and does not affect the transmission of the backlight. According to the embodiment of the application, the multilayer film reflective polarizer 108 is arranged between the backlight source 101 and the first polarizing layer 102, so that the utilization rate of backlight can be improved, and the power consumption of the display device 10 can be reduced, thereby improving the endurance time of the display device 10 and being beneficial to outdoor use.

In the display device that this application provided, including semi-transparent semi-reflecting membrane and backlight, under the darker environment of light, can open the backlight, all regard backlight and reflection ambient light as display device's light source to can avoid leading to reflection ambient light can't satisfy the demand that display device shows because of external environment is darker. Under the bright environment of light, can close the backlight, only rely on reflection ambient light to come as display device's light source, because external ambient light is bright, reflection ambient light can satisfy the demand that display device shows, because of can't open the backlight to can reduce the consumption, improve the time of endurance, be fit for outdoor demonstration.

Specifically, referring to fig. 11, fig. 11 is a schematic structural diagram of a mobile terminal according to an embodiment of the present disclosure, as shown in fig. 11, a mobile terminal 100 according to an embodiment of the present disclosure includes a housing 20 and a display device 10, where the display device 10 is fixed on the housing 20. The housing 20 is used to fix the display device 10,. The display device 10 can refer to the description of the display device above, and the description thereof is omitted here.

In the mobile terminal that this application provided, including semi-transparent semi-reflecting membrane and backlight, under the darker environment of light, can open the backlight, all regard backlight and reflection ambient light as display device's light source to can avoid leading to reflection ambient light can't satisfy the demand that display device shows because of external environment is darker. Under the bright environment of light, can close the backlight, only rely on reflection ambient light to come as display device's light source, because external ambient light is bright, reflection ambient light can satisfy the demand that display device shows, because of can't open the backlight to can reduce the consumption, improve the time of endurance, be fit for outdoor demonstration.

The display device and the mobile terminal provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to illustrate the principles and embodiments of the present application, and the description of the embodiments is only used to help understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A display device, comprising:

a backlight source;

a first polarizing layer disposed on the backlight;

the liquid crystal layer is arranged on one surface of the semi-transparent semi-reflective film, which is far away from the backlight source;

2. The display device according to claim 1, wherein the first polarizing layer comprises a polarizing plate and a first phase difference plate, which are stacked, and the first phase difference plate is disposed on a surface of the polarizing plate away from the backlight source.

3. The display device according to claim 2, wherein the second polarizing layer comprises a second phase difference plate, and the second phase difference plate is disposed on a surface of the color film substrate away from the backlight source.

4. The display device according to claim 3, wherein the first phase difference plate and the second phase difference plate are each a quarter-wave phase difference plate.

5. The display device according to claim 1, wherein the first polarizing layer comprises a polarizer and a first phase difference plate which are stacked, and the polarizer is disposed on a surface of the first phase difference plate away from the backlight source.

6. The display device according to claim 1, wherein the transflective film includes a first transflective film and a second transflective film, which are stacked in a first manner, and the second transflective film is disposed on a surface of the first transflective film away from the array substrate, and a reflectivity of the first transflective film is greater than a reflectivity of the second transflective film.

7. The display device according to claim 1, wherein the array substrate comprises a substrate and an array layer, the substrate and the array layer are stacked, and the array layer is disposed on a surface of the substrate away from the backlight source.

8. The display device according to claim 7, wherein the array layer comprises a thin film transistor for controlling liquid crystal deflection and a photo transistor for detecting brightness of external environment light.

9. The display device of claim 1, further comprising a multilayer film reflective polarizer disposed between the backlight and the first polarizing layer.

10. A mobile terminal, characterized in that it comprises a housing and a display device according to any one of claims 1-9, said display device being fixed to said housing.