CN111025741A

CN111025741A - Display module and display device

Info

Publication number: CN111025741A
Application number: CN201911419551.0A
Authority: CN
Inventors: 尧璐; 韩笑男
Original assignee: Shanghai Tianma Microelectronics Co Ltd
Current assignee: Shanghai Tianma Microelectronics Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-04-17

Abstract

The application provides a display module and a display device, which relate to the technical field of display and comprise a display panel; the display panel includes: the array substrate, the color film substrate, the liquid crystal layer, the upper polarizer and the first grid polarizer; the array substrate comprises a substrate and a reflective metal layer, wherein the reflective metal layer is positioned on one side of the substrate close to the color film substrate; the upper polarizer is positioned on one side, far away from the array substrate, of the color film substrate, the upper polarizer comprises a first polarizing layer and an 1/2 wave plate, and the 1/2 wave plate is positioned on one side, close to the liquid crystal layer, of the first polarizing layer along the direction perpendicular to the light-emitting surface of the display module; the first grid polarizer is positioned on one side of the upper polarizer, which is far away from the color film substrate, and the directions of the absorption axes of the first grid polarizer and the first polarizing layer are the same. This application is through using reflective polaroid collocation wire grating polaroid and reflection metal level for display module assembly can utilize ambient light to carry out infrared light and visible light cross display.

Description

Display module and display device

Technical Field

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

Background

Liquid crystal displays, which are flat, ultra-thin display devices, consist of a certain number of color or black and white pixels placed in front of a light source or a reflective surface. Liquid crystal displays are very low power consuming and are therefore favored by engineers for use in battery-operated electronic devices. Most of the liquid crystal displays in the existing market are backlight type liquid crystal displays, which include a housing, a liquid crystal display panel disposed in the housing, and a backlight module disposed in the housing. The traditional liquid crystal display panel is formed by attaching an array substrate and a color film substrate, a pixel electrode and a common electrode are respectively formed on the opposite inner sides of the array substrate and the color film substrate, and liquid crystal is filled between the array substrate and the color film substrate.

When current display module assembly carries out infrared and visible light and alternately shows, need provide infrared LED and visible light LED through backlight unit, realize the demonstration of infrared and visible light through the light source that transmits to display panel, be unfavorable for reducing the consumption, when not providing in a poor light or backlight LED breaks down moreover, just can't show, be unfavorable for user experience.

Disclosure of Invention

In view of this, the present application provides a display module and a display device, which use a reflective polarizer in combination with a wire grid polarizer and a reflective metal layer to enable the display module to perform cross display of infrared light and visible light by using ambient light.

In order to solve the technical problem, the following technical scheme is adopted:

in a first aspect, the present application provides a display module, including: a display panel; the display panel includes:

the liquid crystal display panel comprises an array substrate, a color film substrate and a liquid crystal layer positioned between the array substrate and the color film substrate; the array substrate comprises a substrate and a reflection metal layer, wherein the reflection metal layer is positioned on one side of the substrate close to the color film substrate;

the upper polaroid is positioned on one side of the color film substrate, which is far away from the array substrate; the upper polarizer comprises a first polarizing layer and an 1/2 wave plate, and the 1/2 wave plate is positioned on one side of the first polarizing layer close to the liquid crystal layer along the direction perpendicular to the light-emitting surface of the display module;

the first grid polarizer is positioned on one side, away from the color film substrate, of the upper polarizer; the directions of the absorption axes of the first grid polarizer and the first polarizing layer are the same.

In a second aspect, the present application further provides a display device, which includes a display module, where the display module is the display module provided in the present application.

Compared with the prior art, the display module and the display device provided by the invention at least realize the following beneficial effects:

(1) among display module assembly and display device that this application provided, make the light phase difference through last polaroid change through using the reflection formula polaroid, set up the reflection metal layer in array substrate simultaneously, utilize the reflection metal layer to reflect away the light that changes with the phase place, and make it produce the phase change once more when going through last polaroid, make light can jet out smoothly, thereby realize the picture display, consequently, even under the condition that does not set up the backlight, display module assembly also can utilize the ambient light that reflects back to show, need not rely on the backlight and can show, thereby be favorable to reducing the consumption.

(2) Among display module assembly and display device that this application provided, one side of keeping away from the liquid crystal at last polaroid sets up the wire grid polaroid, because the wire grid polaroid all has better polarisation characteristic at infrared wave band and visible light wave band, thereby make display module assembly and display device can normally show the infrared light at the infrared light demonstration stage, can normally show visible light at the visible light demonstration stage, and infrared demonstration can go on simultaneously or the timesharing is gone on with visible demonstration, consequently make display module assembly and display device possess infrared light and visible light cross display or the function that shows simultaneously, thereby display module assembly and display device's range of application has been enlarged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a top view of a display module according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of the display module of FIG. 1 showing an AA';

FIG. 3 is a schematic view of an optical path of the display module shown in FIG. 2 in a non-display state;

FIG. 4 is a schematic diagram of an optical path of the display module shown in FIG. 2;

FIG. 5 is a schematic structural diagram of an upper polarizer according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram illustrating a relative position relationship between a reflective area and a pixel unit according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an array substrate according to an embodiment of the present disclosure;

FIG. 8 is a cross-sectional view of another AA' of the display module;

FIG. 9 is a cross-sectional view of another AA' of the display module;

FIG. 10 is a top view of a light source included in the backlight module;

FIG. 11 is a cross-sectional view of another AA' of the display module;

FIG. 12 is a schematic diagram of a light path of the backlight source in the non-display state of the display module shown in FIG. 11;

FIG. 13 is a schematic diagram of a light path of a backlight source in a display state of the display module shown in FIG. 11;

FIG. 14 is a cross-sectional view of still another AA' of the display module of FIG. 1;

fig. 15 is a schematic circuit diagram of an LED according to an embodiment of the present disclosure;

fig. 16 is a schematic structural diagram of a display device according to an embodiment of the present application

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, within which a person skilled in the art can solve the technical problem to substantially achieve the technical result. Furthermore, the term "coupled" is intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The description which follows is a preferred embodiment of the present application, but is made for the purpose of illustrating the general principles of the application and not for the purpose of limiting the scope of the application. The protection scope of the present application shall be subject to the definitions of the appended claims. The same parts between the embodiments are not described in detail.

The following detailed description is to be read in connection with the drawings and the detailed description.

Fig. 1 is a top view of a display module 100 according to an embodiment of the present disclosure, fig. 2 is an AA' cross-sectional view of the display module 100 in fig. 1, fig. 3 is a schematic light path diagram of the display module 100 in fig. 2 in a non-display state, fig. 4 is a schematic light path diagram of the display module 100 in fig. 2 in a display state, please refer to fig. 1 to 4, the present disclosure provides a display module 100, including: a display panel 10; the display panel 10 includes:

the liquid crystal display panel comprises an array substrate 11, a color film substrate 13 and a liquid crystal layer 12 positioned between the array substrate 11 and the color film substrate 13; the array substrate 11 includes a substrate 111 and a reflective metal layer 112, and the reflective metal layer 112 is located on one side of the substrate 111 close to the color filter substrate 13;

the upper polarizer 14 is positioned on one side of the color film substrate 13, which is far away from the array substrate 11; the upper polarizer 14 includes a first polarizing layer 142 and an 1/2 wave plate 141, and the 1/2 wave plate 141 is located on a side of the first polarizing layer 142 close to the liquid crystal layer 12 along a direction perpendicular to the light emitting surface of the display module 100;

the first grid polarizer 15 is positioned on one side, away from the color film substrate 13, of the upper polarizer 14; the directions of the absorption axes of the first wire grid polarizer 15 and the first polarizing layer 142 are the same.

Specifically, referring to fig. 1 and fig. 2, a display module 100 provided in the embodiment of the present application includes a display panel 10, where the display panel 10 includes an array substrate 11 and a color filter substrate 13 oppositely disposed on two sides of a liquid crystal; the display panel 10 further includes a first wire grid polarizer 15 and an upper polarizer 14, where the upper polarizer 14 is a reflective polarizer, and includes a first polarizing layer 142 and an 1/2 wave plate 141, and a 1/2 wave plate 141 is located on a side of the first polarizing layer 142 away from the first wire grid polarizer 15, where an absorption axis of the first polarizing layer 142 is in the same direction as an absorption axis of the first wire grid polarizer 15, so that light transmitted through the first wire grid polarizer 15 is not blocked by the first polarizing layer 142, and light emitted from the first polarizing layer 142 is transmitted to the 1/2 wave plate 141 and then is incident to the liquid crystal layer 12, the array substrate 11 in this application includes a substrate 111 and a reflective metal layer 112, the reflective metal layer 112 is located on a side of the substrate 111 close to the liquid crystal layer 12, and light emitted from the liquid crystal layer 12 is reflected by the reflective metal layer 112, so that a picture display can be realized by the reflected light, therefore, under the condition that no backlight source is provided, the ambient light incident to the display module 100 is reflected out through the reflective metal layer 112, and the image display is realized, that is, the image display can be realized by only utilizing the ambient light without depending on the backlight, so that the power consumption is favorably reduced.

Referring to fig. 2, the first Wire grid polarizer in the present application may be, for example, WGF polarizer, i.e., Wire grid polarizer Film, which is an optical Film composed of nanoscale metal wires and is capable of transmitting incident light with an electric field direction perpendicular to the Wire grid direction and reflecting light with an electric field direction parallel to the Wire grid direction. Compared with a conventional iodine polarizer, the wire grid polarizer has good polarization characteristics in an infrared wave band and a visible light wave band, so that the display module 100 can normally display infrared light in an infrared light display stage and can normally display visible light in a visible light display stage, the cross display function of the infrared light and the visible light is realized, and the application range of the display module 100 is expanded. It should be noted that the infrared light display stage and the visible light display stage of the display module 100 of the present application may be crossed or overlapped, that is, the infrared light display and the visible light display may be performed at different time or simultaneously. When the infrared light display and the visible light display are simultaneously carried out, only the content of the visible light display can be observed through human eyes; when wearing a specific device, the contents displayed by the infrared light and the visible light can be observed simultaneously. When the infrared light display and the visible light display are carried out in a time-sharing manner, the content displayed by the infrared light can be observed by wearing specific equipment in the infrared light display stage; in the visible light display stage, the content of the visible light display can be directly observed.

Referring to fig. 3, the upper polarizer 14 in the present application is a reflective polarizer, and includes a first polarizing layer 142 and an 1/2 wave plate 141, assuming that an angle θ between absorption axes of the first grid polarizer 15 and the first polarizing layer 142 is 15 degrees, an angle of light emitted from the first polarizing layer 142 is 105 degrees, the light emitted from the first polarizing layer 142 enters the 1/2 wave plate 141, and a polarization direction of the light changes by 2 θ under the action of the 1/2 wave plate 141, and an angle of light emitted from the 1/2 wave plate 141 is 135 degrees, when the display panel 10 is not energized, liquid crystal molecules are not deflected, and the liquid crystal layer 12 at this time corresponds to a 1/4 wave plate, such that linearly polarized light passing through the liquid crystal layer 12 is converted into circularly polarized light, and the circularly polarized light emitted from the liquid crystal layer 12 is reflected to the liquid crystal layer 12 by the reflective metal layer 112, and at this time, since the display panel 10 is not energized, if the liquid crystal molecules are not deflected, the light beam entering the liquid crystal layer 12 passes through one 1/4 wave plate again to convert the incident circularly polarized light into linearly polarized light, but at this time, the angle between the emitted linearly polarized light and the linearly polarized light emitted from the 1/2 wave plate 141 to the liquid crystal layer 12 changes by 90 degrees, that is, at this time, the angle between the light beam emitted from the liquid crystal layer 12 is 45 degrees, and the angle between the emitted light beam after passing through the 1/2 wave plate 141 again is 15 degrees, and therefore, since the angle is the same as the angle of the absorption axis of the first polarizing layer 142, no light beam is emitted from the first polarizing layer 142, and the display panel 10 is in a black state, and no image display is performed. Referring to fig. 4, when the display panel 10 is powered on, the liquid crystal molecules are deflected under the action of the electric field between the array substrate 11 and the color film substrate 13, so that linearly polarized light incident to the liquid crystal layer 12 is emitted linearly, at this time, the angle of light emitted from the liquid crystal layer 12 is 135 degrees, the light is emitted from the liquid crystal layer 12 after being reflected by the reflective metal layer 112, the angle of light emitted after passing through the 1/2 wave plate 141 is 105 degrees, the angle is perpendicular to the absorption axes of the first polarizing layer 142 and the first grid polarizer 15, and the light is emitted from the first polarizing layer 142 and the first grid polarizer 15, so that the display panel 10 can perform display.

It should be noted that fig. 2 only schematically illustrates a film structure relationship of the display panel 10, and does not represent an actual number of films and a film thickness. In addition, the absorption axes and the light angles of the first polarizing layer and the first grid polarizer in the embodiments shown in fig. 3 and fig. 4 are only illustrative and not intended to limit the present application, and in use, the absorption axis angles of the first grid polarizer and the first polarizing layer may be set as required, and the light angles that can pass through may also be changed accordingly to meet the display requirement.

Optionally, fig. 5 is a schematic structural diagram of the upper polarizer 14 provided in the embodiment of the present application, please refer to fig. 5, in which the upper polarizer 14 further includes a first substrate 144 and a second substrate 143, the first substrate 144 is located on a side of the first polarizing layer 142 away from the 1/2 wave plate 141, and the second substrate 143 is located between the first polarizing layer 142 and the 1/2 wave plate 141. Specifically, in this embodiment, the first substrate base plate 144 is disposed on a side of the first polarizing layer 142 away from the 1/2 wave plate 141, the second substrate base plate 143 is disposed between the first polarizing layer 142 and the 1/2 wave plate 141, and the first substrate base plate 144 and the second substrate base plate 143 support and protect the first polarizing layer 142, so as to ensure the flatness of the display panel 10, thereby avoiding the phenomenon of non-uniformity of display and improving the display effect.

Optionally, fig. 6 is a schematic diagram illustrating a relative position relationship between the reflective area and the pixel unit provided in the embodiment of the present application, and fig. 7 is a schematic diagram illustrating a structure of the array substrate 11 provided in the embodiment of the present application, please refer to fig. 1, fig. 6 and fig. 7, the display panel 10 further includes a plurality of data lines 116 and a plurality of gate lines 117, and two adjacent data lines 116 and two adjacent gate lines 117 form a pixel unit 118; array substrate 11 further includes a thin-film transistor layer 113, and thin-film transistor layer 113 includes a plurality of thin-film transistors 115; thin-film transistor layer 113 is located between substrate 111 and reflective metal layer 112; the reflective metal layer 112 includes a plurality of reflective regions, and an orthogonal projection of the reflective regions on the plane of the display panel 10 at least partially overlaps an orthogonal projection of the pixel units 118 on the plane of the display panel 10.

Specifically, referring to fig. 1, fig. 6 and fig. 7, the array substrate 11 further includes a thin film transistor layer 113, the thin film transistor layer 113 includes a plurality of thin film transistors 115, and the reflective metal layer 112 is disposed on one side of the thin film transistor layer 113 away from the substrate 111, so that light can be reflected by the reflective metal layer 112 after passing through the liquid crystal, thereby preventing the thin film transistor layer 113 from affecting the light reflection, and ensuring that the display module 100 can normally display. The display panel 10 further includes a plurality of pixel units 118, each pixel unit 118 is formed by two adjacent data lines 116 and two adjacent gate lines 117, in this embodiment, the reflective metal layer 112 is set as a reflective region corresponding to the pixel unit 118, and the reflective metal layer 112 is electrically connected to the drain of the thin film transistor 113, so that the reflective metal layer 112 corresponding to the pixel unit 118 can be multiplexed as a pixel electrode, and a data signal is received by the reflective metal layer 112, thereby realizing image display. Moreover, when the light passing through the liquid crystal layer 12 irradiates the reflective metal layer 112, the reflective metal layer 112 reflects a portion of the light, so that the display module 100 can display images by using the light reflected by the reflective metal layer 112, which is beneficial to reducing power consumption.

It should be noted that fig. 6 only schematically shows a relative position relationship between the reflective regions and the pixel units, and does not represent actual sizes and numbers of the reflective regions and the pixel units. In addition, fig. 7 only schematically illustrates a relative position relationship of the reflective metal layer in the array substrate, and does not represent an actual number of film layers and a film thickness of the array substrate.

Optionally, fig. 8 is another AA' cross-sectional view of the display module 100, please refer to fig. 8, the display module 100 further includes a backlight module 20, and the backlight module 20 is located on a side of the array substrate 11 away from the color film substrate 13; the backlight module 20 includes a first light source 21; the display panel 10 further includes a lower polarizer 16, and the lower polarizer 16 is located between the array substrate 11 and the backlight module 20. Specifically, referring to fig. 8, the display module 100 further includes a backlight module 20, the display panel 10 includes a lower polarizer 16 located between the array substrate 11 and the backlight module 20, the backlight module 20 includes a first light source 21, the first light source 21 can provide a light source for the display panel 10, liquid crystal molecules deflect under the action of an electric field between the array substrate 11 and the color filter substrate 13, so that light can penetrate through the liquid crystal layer 12 to be directly emitted, the display panel 10 realizes transmission display by using the light source provided by the backlight module 20, meanwhile, the display panel 10 can also receive ambient light, the ambient light incident to the display module 100 is reflected by the reflective metal layer 112, reflection display can be realized by using the ambient light, therefore, under the condition of providing a backlight source for the display module 100, the display panel 10 can realize semi-reflective and semi-transmissive display, and simultaneously receive the backlight source and the ambient light, the display brightness is improved, and therefore the display effect is improved. In addition, make display module assembly realize half reflecting and half penetrating and show, when first light source 21 in backlight unit 20 breaks down and can't provide the backlight for display module assembly 100, display module assembly 100 can utilize ambient light to show, can not cause the problem that can't show, is favorable to promoting user experience.

Optionally, fig. 9 is a cross-sectional view of another AA' of the display module 100, fig. 10 is a top view of the light source included in the backlight module 20, please refer to fig. 9 and fig. 10, the display panel 10 further includes a second wire grid polarizer 17, and the second wire grid polarizer 17 is located between the lower polarizer 16 and the backlight module 20; the backlight module 20 further includes: a second light source 22, the first light source 21 and the second light source 22 being controlled individually; the first light source 21 comprises a plurality of first LEDs 26, the second light source 22 comprises a plurality of second LEDs 27; the wavelength of the first light source 21 is λ 1, the wavelength of the second light source 22 is λ 2, λ 1 is greater than 780nm and less than 1310nm, and λ 2 is greater than 380nm and less than 780 nm. Specifically, referring to fig. 9, in the present embodiment, a second wire grid polarizer 17 is introduced, such that the second wire grid polarizer 17 is located between the lower polarizer 16 and the backlight module 20, and a second light source 22 is disposed in the backlight module 20, wherein the wavelength of the first light source 21 is 380nm ≤ λ 1 ≤ 780nm, and can provide visible light, and the wavelength of the second light source 22 is 780nm ≤ λ 2 ≤ 1310nm, and can provide infrared light; the second wire grid polarizer 17 has the same function as the first wire grid polarizer 15, and may also be an WGF polarizer, so that the display module 100 can normally display infrared light when receiving infrared light and can normally display visible light when receiving visible light, and because the first light source 21 and the second light source 22 are controlled separately, a time-sharing display technology or a simultaneous display technology of different wave bands of light, i.e., infrared light and visible light, can be realized; under normal display conditions, the first LED26 may be controlled to emit visible light; under special display conditions, the second LED27 can be controlled to emit infrared light, and other equipment is matched to obtain infrared display content, so that the aim of hidden display is fulfilled. First light source 21 and the mode of second light source 22 individual control in this application, can control first light source 21 and second light source 22 and give out light simultaneously, also can control first light source 21 and second light source 22 timesharing and give out light to make infrared light and visible light show control more nimble in the display module assembly 100, can satisfy different application demands.

It should be noted that fig. 10 only schematically shows one arrangement of the first LEDs 26 and the second LEDs 27, and does not represent actual size and number, and in some other embodiments of the present application, the first LEDs 26 and the second LEDs 27 may also adopt other arrangements, for example, all the odd rows are provided with the first LEDs 26, all the even rows are provided with the second LEDs 27, and the like, which is not specifically limited in the present application.

Alternatively, fig. 11 is a cross-sectional view of another AA' of the display module 100, fig. 12 is a schematic diagram illustrating an optical path of the backlight source in the non-display state of the display module 100 shown in fig. 11, and fig. 13 is a schematic diagram illustrating an optical path of the backlight source in the display state of the display module 100 shown in fig. 11, please refer to fig. 11-13, the lower polarizer 16 includes a second polarizing layer and an 1/4 wave plate, in a direction perpendicular to the light-emitting surface of the display module 100, the 1/4 wave plate is located on a side of the second polarizing layer away from the second wire grid polarizer 17, and directions of absorption axes of the second wire grid polarizer 17 and the second polarizing layer are the same. Preferably, the second wire grid polarizer 17 has a different absorption axis direction from the first wire grid polarizer 15.

Specifically, referring to fig. 11 and 12, the lower polarizer 16 in the embodiment is a reflective polarizer, and includes a second polarizing layer and 1/4 wave plates, assuming that the angle of the absorption axes of the first grid polarizer 15 and the first polarizing layer 142 is 15 degrees, and the angle of the absorption axes of the second grid polarizer 17 and the second polarizing layer is 45 degrees, when the backlight module 20 provides light, the angle of the light emitted from the second polarizing layer is 135 degrees, after the light with the angle of 135 degrees enters the 1/4 wave plate, under the action of 1/4 wave plate, linearly polarized light is converted into circularly polarized light, when the display panel 10 is not energized, liquid crystal molecules are not deflected, at this time, the liquid crystal layer 12 is equivalent to a 1/4 wave plate, so that the circularly polarized light passing through the liquid crystal layer 12 is converted into linearly polarized light, and under the action of liquid crystal, the angle of the light changes, the angle of the light emitted from the liquid crystal layer 12 is 45 degrees, and the angle of the light emitted after passing through the 1/2 wave plate 141 again is 15 degrees, and since the angle is the same as the angle of the absorption axis of the first polarizing layer 142, no light is emitted from the first polarizing layer 142, and the display panel 10 is in a black state, and no image display is performed. Referring to fig. 13, when the display panel 10 is powered on, the liquid crystal molecules are deflected under the action of the electric field between the array substrate 11 and the color film substrate 13, the circularly polarized light emitted from the 1/4 wave plate passes through the liquid crystal layer 12 and is also circularly polarized light, because the 1/2 wave plate does not change the type of the polarized light, the light emitted from the 1/2 wave plate 141 is still circularly polarized light, the circularly polarized light enters the second polarizing layer to emit light perpendicular to the absorption axis of the second polarizing layer, because the angle of the absorption axis of the second grating polarizer 17 is the same as the angle of the absorption axis of the second polarizing layer, the light emitted from the second polarizing layer can be emitted from the second grating polarizer 17, the display panel 10 utilizes the light source provided by the backlight module 20 to realize transmissive display, and the display panel 10 can utilize ambient light, thereby being beneficial to improving display brightness, thereby improving the display effect. When the display panel 10 receives the ambient light and the backlight source simultaneously, the optical path schematic diagram of the ambient light is the same as the optical path schematic diagram of the reflection mode shown in fig. 3 and fig. 4, and therefore, the description thereof is omitted.

Optionally, with continued reference to fig. 8-11, the backlight module 20 includes a receiving frame 30 and a light guide plate 25, the receiving frame 30 includes a base 24 and an extending portion 23 surrounding the base 24, the light guide plate 25 is located in a receiving space formed by the base 24 and the extending portion 23, in this embodiment, the backlight module 20 is a side-in type backlight module 20, the first LEDs 26 and the second LEDs 27 are alternately arranged on one side of the extending portion 23 facing the light guide plate 25, that is, on a side surface of the light guide plate 25, light of the first LEDs 26 or the second LEDs 27 is transmitted to the light guide plate 25 from the side surface of the light guide plate 25, a plurality of diffusion points are generally distributed on the light guide plate 25, when the light strikes the diffusion points, the reflected light is diffused at various angles, and then the reflection condition is destroyed and emitted from the front. The light guide plate 25 can uniformly emit light by using various diffusion points with different densities and sizes. The uniform light will be provided to other optical films in the backlight module 20, so that the uniform light is finally provided to the display panel 10. It should be noted that the optical film of the backlight module 20 may include, for example, a diffuser, a brightness enhancement film, etc., and this is not particularly limited in this application.

In addition to the backlight module 20 adopting the edge-in type structure, optionally, fig. 14 shows another AA' cross-sectional view of the display module 100 in fig. 1, please refer to fig. 14, the backlight module 20 may also be a direct-type backlight module 20, the first LEDs 26 and the second LEDs 27 are alternately arranged on one side of the substrate 24 facing the light-emitting surface, in this embodiment, the first LEDs 26 and the second LEDs 27 are located on one side of the light guide plate 25 facing the substrate 24, the light emitted from the first LEDs 26 and the second LEDs 27 is incident on the light guide plate 25, and the light guide plate 25 is used for guiding the scattering direction of the light, so as to improve the brightness of the display panel 10 and ensure the uniformity of the panel brightness.

Of course, in some other embodiments of the present disclosure, the backlight module 20 may also adopt a combination of a side-in type and a direct-out type, for example, the first LEDs 26 are distributed on the side surface of the light guide plate 25, the second LEDs 27 are distributed under the light guide plate 25, and the like, which is not particularly limited in the present disclosure.

Alternatively, fig. 15 is a schematic circuit connection diagram of the LED provided in the embodiment of the present application, please refer to fig. 15, in which a plurality of first LEDs 26 are connected in series to form a first circuit 28, and a plurality of second LEDs 27 are connected in series to form a second circuit 29; the backlight module 20 further comprises a switch control circuit electrically connected to the first circuit 28 via a first switch, and electrically connected to the second circuit 29 via a second switch. Specifically, in the present application, the first LEDs 26 are connected in series and controlled by a first switch in a unified manner, the second LEDs 27 are connected in series and controlled by a second switch in a unified manner, the first switch and the second switch are controlled by a switch control circuit in a unified manner, and when visible light display is required, the switch control circuit controls the first switch to be closed, so that the first LEDs 26 emit light; when the infrared display is required, the switch control circuit controls the second switch to be closed, so that each second LED27 emits light. In practical application, two control buttons, for example, a first button and a second button, may be disposed on the display module 100, and the two control buttons are respectively connected to a switch control circuit inside the display module 100, and when a user presses the first button, the switch control circuit receives a control signal sent by the first button, controls the first switch to be closed, and the first LEDs 26 emit light, so as to realize visible light display. When the infrared display is needed, a user can press the second button, and when the light-on control circuit receives a control signal sent by the second button, the second switch is controlled to be closed, and each second LED27 emits light, so that the infrared display function is realized. When the infrared light display and the visible light display are required to be simultaneously displayed, the first button and the second button can be simultaneously pressed, so that the first LED26 and the second LED27 emit light simultaneously, and the infrared display and the visible light display are simultaneously realized, wherein in this case, only the content of the visible light display can be observed by human eyes; when wearing a specific device, the contents displayed by the infrared light and the visible light can be observed simultaneously.

Based on the same inventive concept, the present application further provides a display device 200, please refer to fig. 16, and fig. 16 is a schematic structural diagram of the display device 200 according to the embodiment of the present application, in which the display device 200 includes a display module, and the display module is any one of the display modules 100 according to the embodiments of the present application. It should be noted that, for the embodiments of the display device 200 provided in the present application, reference may be made to the embodiments of the display module 100, and the same parts are not described again. The display device 200 provided by the present application may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.

According to the embodiments, the application has the following beneficial effects:

(1) among display module assembly and display device that this application provided, make the light phase difference through last polaroid change through using the reflection formula polaroid, set up the reflection metal layer in array substrate simultaneously, utilize the reflection metal layer to reflect away the light that changes with the phase place, and make it produce the phase change once more when going through last polaroid, make light jet out smoothly, thereby realize the picture display, consequently, even under the condition that does not set up the backlight, display module assembly also can utilize the ambient light that reflects back to show, need not rely on the backlight, realize the reflection and show, thereby be favorable to reducing the consumption.

The foregoing description shows and describes several preferred embodiments of the present application, but as aforementioned, it is to be understood that the application is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the application, which is to be protected by the claims appended hereto.

Claims

1. A display module, comprising: a display panel; the display panel includes:

2. The display module of claim 1, wherein the upper polarizer further comprises a first substrate and a second substrate, the first substrate being located on a side of the first polarizing layer away from the 1/2 wave plate, the second substrate being located between the first polarizing layer and the 1/2 wave plate.

3. The display module of claim 1, further comprising a plurality of data lines and a plurality of gate lines, wherein two adjacent data lines and two adjacent gate lines form a pixel unit;

the array substrate further comprises a thin film transistor layer, wherein the thin film transistor layer comprises a plurality of thin film transistors; the thin film transistor layer is positioned between the substrate and the reflecting metal layer; the reflecting metal layer comprises a plurality of reflecting areas, and the orthographic projection of the reflecting areas on the plane of the display panel is at least partially overlapped with the orthographic projection of the pixel units on the plane of the display panel.

4. The display module according to claim 1, further comprising a backlight module, wherein the backlight module is located on one side of the array substrate away from the color film substrate; the backlight module comprises a first light source;

the display panel further comprises a lower polarizer, and the lower polarizer is located between the array substrate and the backlight module.

5. The display module of claim 4, the display panel further comprising a second wire grid polarizer, the second wire grid polarizer being located between the lower polarizer and the backlight module;

the backlight module further comprises: a second light source, the first and second light sources being separately controlled; the first light source comprises a plurality of first LEDs and the second light source comprises a plurality of second LEDs; the wavelength of the first light source is lambda 1, the wavelength of the second light source is lambda 2, lambda 2 is greater than 780nm and less than or equal to 1310nm, and lambda 1 is greater than or equal to 380nm and less than or equal to 780 nm.

6. The display module according to claim 5, wherein the lower polarizer comprises a second polarizing layer and an 1/4 wave plate, the 1/4 wave plate is located on a side of the second polarizing layer away from the second wire grid polarizer along a direction perpendicular to a light emitting surface of the display module, and absorption axes of the second wire grid polarizer and the second polarizing layer are in the same direction.

7. The display module according to claim 5, wherein the second wire grid polarizer and the first wire grid polarizer have different absorption axis directions.

8. The display module according to claim 5, wherein the backlight module comprises a receiving frame and a light guide plate, the receiving frame comprises a base and an extending portion surrounding the base, the base and the extending portion form a receiving space, and the light guide plate is located in the receiving space;

the backlight module is a side-in type backlight module, and the first LEDs and the second LEDs are alternately arranged on one side of the extending part facing the light guide plate.

9. The display module according to claim 5, wherein the backlight module comprises a receiving frame, the receiving frame comprises a base and an extending portion surrounding the base, the base and the extending portion form a receiving space, and the light guide plate is located in the receiving space;

the backlight module is a direct type backlight module, and the first LEDs and the second LEDs are alternately arranged on one side of the substrate facing the light-emitting surface.

10. The display module of claim 5, wherein a plurality of the first LEDs are connected in series to form a first circuit and a plurality of the second LEDs are connected in series to form a second circuit;

the backlight module further comprises a switch control circuit, the switch control circuit is electrically connected with the first circuit through a first switch, and the switch control circuit is electrically connected with the second circuit through a second switch.

11. A display device comprising the display module of any one of claims 1-10.