CN117596923A - Display device - Google Patents

Abstract

The present disclosure provides a display device including a display module, a photodetector, a processor, and an optical structure layer. The display module is used for displaying pictures. The light detector is electrically connected to the display module and is used for detecting the brightness of the ambient light and outputting a sensing signal. The processor is electrically connected with the display module and the light detector, and is used for receiving the sensing signal and outputting an instruction signal to the display module according to the sensing signal, so that the display module adjusts the brightness of the picture according to the instruction signal. The optical structure layer is arranged on the display module, wherein the glossiness of the optical structure layer is between 4GU and 35GU, and the reflectivity of the optical structure layer containing specular regular reflection light (SCI) is between 3% and 6%. The display device provided by the disclosure can reduce the influence of the external environment light on the displayed picture.

Description

Display device

Technical Field

The present disclosure relates to a display device, and more particularly, to a display device capable of detecting ambient light.

Background

When the display device is used outdoors, ambient light from the outside irradiates the display device to generate reflected light, so that the contrast of a picture displayed by the display device is reduced due to interference of the reflected light, and the display quality of the picture is reduced.

Furthermore, when the ambient light is too bright or too dim, the display quality of the display device will be reduced if there is no corresponding change in the brightness of the display device.

Disclosure of Invention

The present disclosure provides a display device, which can reduce the influence of the ambient light from the outside on the displayed image, and can correspondingly adjust the image brightness of the display device according to the ambient light brightness, thereby improving the display quality of the display device.

A display device provided according to some embodiments of the present disclosure includes a display module, a light detector, a processor, and an optical structural layer. The display module is used for displaying pictures. The light detector is electrically connected to the display module and is used for detecting the brightness of the ambient light and outputting a sensing signal. The processor is electrically connected with the display module and the light detector, and is used for receiving the sensing signal and outputting an instruction signal to the display module according to the sensing signal, so that the display module adjusts the brightness of the picture according to the instruction signal. The optical structure layer is arranged on the display module, wherein the glossiness of the optical structure layer is between 4GU and 35GU, and the reflectivity of the optical structure layer containing specular regular reflection light (SCI) is between 3% and 6%.

Some embodiments according to the present disclosure provide a display device including a display module, a light emitting module, and an optical structure layer. The light emitting module comprises a plurality of light emitting areas which can be controlled independently and is used for emitting light towards the display module. The optical structure layer is arranged on the display module, wherein the glossiness of the optical structure layer is between 4GU and 35GU, and the reflectivity of the optical structure layer containing specular regular reflection light (SCI) is between 3% and 6%.

In order to make the above features and advantages of the present disclosure more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification. The accompanying drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

FIG. 1A is a schematic cross-sectional view of a display device according to a first embodiment of the disclosure;

FIG. 1B is a schematic cross-sectional view of a display panel according to an embodiment of the display device of FIG. 1A;

FIG. 1C is a schematic cross-sectional view of a display panel according to another embodiment of the display device of FIG. 1A;

FIG. 1D is a graph showing the relationship between brightness and viewing angle of the display device according to FIG. 1A and the conventional display device;

FIG. 1E is a schematic partial cross-sectional view of an anti-glare layer in the optical structure layer according to one embodiment of FIG. 1A;

FIG. 1F is a schematic partial cross-sectional view of an anti-glare layer in an optical structure layer according to another embodiment of FIG. 1A;

FIG. 1G is a schematic partial cross-sectional view of an anti-glare layer in the optical structure layer according to yet another embodiment of FIG. 1A;

FIG. 1H is a schematic partial cross-sectional view of an anti-glare layer in the optical structure layer according to the further embodiment of FIG. 1A;

FIG. 1I is a schematic partial cross-sectional view of an anti-reflective layer in an optical structural layer according to one embodiment of FIG. 1A;

FIG. 2 is a schematic cross-sectional view of a display device according to a second embodiment of the disclosure;

FIG. 3A is a schematic cross-sectional view of a display device according to a third embodiment of the disclosure;

FIG. 3B is a schematic cross-sectional view of a display device according to a fourth embodiment of the disclosure;

fig. 4 is a schematic cross-sectional view of a display device according to a fifth embodiment of the disclosure;

FIG. 5 is a schematic cross-sectional view of a display device according to a sixth embodiment of the disclosure;

fig. 6 is a schematic cross-sectional view of a display device according to a seventh embodiment of the disclosure;

FIG. 7A is a graph showing the relationship between the brightness of a display device and the brightness of the environment according to an embodiment of the present disclosure;

Fig. 7B is a graph illustrating a relationship between brightness of a display device and brightness of an environment according to another embodiment of the disclosure.

Detailed Description

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

The present disclosure may be understood by referring to the following detailed description in conjunction with the accompanying drawings, it being noted that, in order to facilitate the understanding of the reader and the brevity of the drawings, the various drawings in the present disclosure depict only a portion of the electronic device and the specific elements of the drawings are not necessarily drawn to scale. Furthermore, the number and size of the elements in the drawings are illustrative only and are not intended to limit the scope of the present disclosure.

Certain terms are used throughout the description and following claims to refer to particular components. Those skilled in the art will appreciate that electronic device manufacturers may refer to a component by different names. It is not intended to distinguish between components that differ in function but not name. In the following description and claims, the terms "include," have, "and the like are open-ended terms, and thus should be interpreted to mean" include, but not limited to …. Thus, the terms "comprises," "comprising," "includes," and/or "including," when used in the description of the present disclosure, specify the presence of stated features, regions, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, regions, steps, operations, and/or components.

Directional terms mentioned herein, such as: "upper", "lower", "front", "rear", "left", "right", etc., are merely directions with reference to the drawings. Thus, the directional terminology is used for purposes of illustration and is not intended to be limiting of the disclosure. In the drawings, the various figures illustrate the general features of methods, structures and/or materials used in certain embodiments. However, these drawings should not be construed as defining or limiting the scope or nature of what is covered by these embodiments. For example, the relative dimensions, thicknesses, and locations of various layers, regions, and/or structures may be reduced or exaggerated for clarity.

When a corresponding element (e.g., a film layer or region) is referred to as being "on" another element, it can be directly on the other element or other elements can be present therebetween. On the other hand, when an element is referred to as being "directly on" another element, there are no elements therebetween. In addition, when a member is referred to as being "on" another member, the two members have an up-and-down relationship in a top view, and the member may be above or below the other member, and the up-and-down relationship depends on the orientation of the device.

The terms "equal to" or "identical," "substantially," or "substantially" are generally construed to be within 20% of a given value or range, or to be within 10%, 5%, 3%, 2%, 1%, or 0.5% of a given value or range.

The use of ordinal numbers such as "first," "second," and the like in the description and in the claims is used for modifying an element, and is not by itself intended to exclude the presence of any preceding ordinal number(s) or order(s) of a certain element or another element or order(s) of manufacture, and the use of such ordinal numbers merely serves to distinguish one element having a certain name from another element having a same name. The same words may not be used in the claims and the specification, whereby a first element in the description may be a second element in the claims.

It is to be understood that the following exemplary embodiments may be substituted, rearranged, and mixed for the features of several different embodiments without departing from the spirit of the disclosure to accomplish other embodiments. Features of the embodiments can be mixed and matched at will without departing from the spirit of the invention or conflicting.

The electrical connection or coupling described in this disclosure may refer to a direct connection or an indirect connection, in which case the terminals of the elements of the two circuits are directly connected or connected with each other by a conductor segment, and in which case the terminals of the elements of the two circuits have a switch, a diode, a capacitor, an inductor, other suitable elements, or a combination thereof, but is not limited thereto.

In the present disclosure, the thickness, length, width and area may be measured by an optical microscope, and the thickness may be measured by a cross-sectional image in an electron microscope, but is not limited thereto. In addition, any two values or directions used for comparison may have some error. If the first value is equal to the second value, it implies that there may be about a 10% error between the first value and the second value; if the first direction is perpendicular to the second direction, the angle between the first direction and the second direction may be between 80 degrees and 100 degrees; if the first direction is parallel to the second direction, the angle between the first direction and the second direction may be between 0 degrees and 10 degrees.

The display device of the present disclosure may be a non-self-luminous display device or a self-luminous display device, and may be a dual-sided display device. The display device may include, for example, diodes, liquid crystals (LEDs), light emitting diodes (light emitting diode), quantum Dots (QDs), fluorescence (fluorescence), phosphorescence (phosphorescence), other suitable display media, or combinations thereof. The light emitting diode may include, for example, but not limited to, an organic light emitting diode (organic light emitting diode, OLED), a micro-light emitting diode (micro-LED, mini-LED), a sub-millimeter light emitting diode (mini-LED), or a Quantum Dot Light Emitting Diode (QDLED). It should be noted that the display device may be any of the above arrangements, but is not limited thereto. In addition, the exterior of the display device may be rectangular, circular, polygonal, have curved edges, or other suitable shapes. The display device may have a peripheral system such as a driving system, a control system, and a light source system.

Fig. 1A is a schematic cross-sectional view of a display device according to a first embodiment of the disclosure, fig. 1B is a schematic cross-sectional view of a display panel according to an embodiment of the display device of fig. 1A, and fig. 1C is a schematic cross-sectional view of a display device according to another embodiment of fig. 1A.

Referring to fig. 1A, the display device 10a of the present embodiment includes a display module 100a, a light detector 200, a processor 300, and an optical structure layer 400, but the disclosure is not limited thereto. The display device 10a of the present embodiment may be applied to, for example, a digital gallery, a mobile phone, a tablet computer, a public information display, and/or other electronic devices that may be used outdoors or in environments with high intensity of ambient light.

The display module 100a includes, for example, a display panel 110a and a light emitting module 120a for displaying a picture. In some embodiments, the display module 100a may include a liquid crystal display module, an organic light emitting diode display module, a micro light emitting diode display module, or a sub-millimeter light emitting diode display module, but the disclosure is not limited thereto.

In the present embodiment, the display panel 110a is disposed between the optical structure layer 400 and the light emitting module 120a, and includes, for example, a liquid crystal display panel, but the disclosure is not limited thereto. In some embodiments, as shown in fig. 1B, the display panel 110a may include a substrate SB1, an opposite substrate SB2, a device layer (not shown), a liquid crystal layer LC, a color filter layer CF, and a sealant SL. The substrate SB1 and the opposite substrate SB2 can comprise, for example, a flexible substrate or a non-flexible substrate, wherein the material of the substrate SB1 and the opposite substrate SB2 can comprise, for example, glass, plastic, or a combination thereof. For example, the substrate SB1 and the opposite substrate SB2 can comprise quartz, sapphire (sapphire), polymethyl methacrylate (polymethyl methacrylate, PMMA), polycarbonate (PC), polyimide (PI), polyethylene terephthalate (polyethylene terephthalate, PET), or other suitable materials or combinations thereof, which are not limited to the disclosure. The element layer of the display panel 110a is disposed on the substrate SB1, for example, and may include a circuit structure to drive the liquid crystal layer LC, for example. For example, the device layer of the display panel 110 may include a plurality of scan lines, a plurality of data lines, an insulating layer, a capacitor, a plurality of transistors, and/or a plurality of electrodes, but the disclosure is not limited thereto. In some embodiments, the element layer of the display panel 110a may include a plurality of lines without including transistors. The liquid crystal layer LC may be disposed on the element layer, for example. In some embodiments, the liquid crystal layer LC may include liquid crystal molecules that can be turned or switched by a vertical electric field or liquid crystal molecules that can be turned or switched by a lateral electric field, which is not limited in this disclosure. The color filter layer CF is disposed between the liquid crystal layer LC and the opposite substrate SB2, and can filter out various suitable colors of light (e.g. red light, green light, blue light, white light, etc.), so that the display panel 110a can display a frame including the above colors of light, but the disclosure is not limited thereto. The sealant SL is disposed between the substrate SB1 and the opposite substrate SB2, and can surround the liquid crystal layer LC, for example, to reduce the possibility of flowing out of the liquid crystal layer LC.

The light emitting module 120a is for example used for providing light to the display panel 110a. In the present embodiment, the light emitting module 120a includes a monochrome liquid crystal panel Mono and a backlight unit BLU1, and can adjust the brightness of the light according to the command signal S2 transmitted by the processor 300. Therefore, in the present embodiment, the light emitting module 120a includes a plurality of independently controllable light emitting regions, as described in detail below.

The monochrome liquid crystal panel Mono is disposed between the backlight unit BLU1 and the display panel 110a, for example. In some embodiments, as shown in fig. 1C, the monochrome liquid crystal panel Mono may include a substrate SB1, an opposite substrate SB2, a device layer (not shown), a liquid crystal layer LC, a monochrome filter layer MF, and a sealant SL, wherein the materials and the arrangement of the substrate SB1, the opposite substrate SB2, the device layer (not shown), the liquid crystal layer LC, and the sealant SL may be referred to the description of the display panel 110a in the foregoing embodiments, and are not repeated herein. The main difference between the monochrome liquid crystal panel Mono and the display panel 110a is that: the monochrome liquid crystal panel Mono includes a monochrome filter MF, and the display panel 110a includes a color filter CF. By having the light emitting module 120a include a combination of a monochrome liquid crystal panel Mono and the display panel 110a, the monochrome filter MF can be used to adjust the gray scale of a particular sub-pixel (not shown) of the display panel 110a. In the present embodiment, the Mono-color liquid crystal panel Mono can adjust the gray level of a specific sub-pixel (not shown) of the display panel 110 by the command signal S2 transmitted from the processor 300, so as to improve the contrast of the image displayed by the display module 100 a.

The backlight unit BLU1 includes, for example, a reflective sheet 121, a light guide plate 122, a light source 123, a lower diffusion sheet 124, an upper diffusion sheet 125, and a brightness enhancing film 126, wherein the reflective sheet 121, the light guide plate 122, the lower diffusion sheet 124, the upper diffusion sheet 125, and the brightness enhancing film 126 are laminated in this order in a normal direction n of the display panel 110. In the present embodiment, the backlight unit BLU1 can, for example, receive the command signal S2 transmitted from the processor 300, so that the backlight unit BLU1 can adjust the brightness of the light emitted by the light source 123 according to the intensity of the ambient light, thereby improving the quality of the image displayed on the display panel 110a, and enabling the user to have a good feeling when viewing the display device 10a of the present embodiment.

The reflective sheet 121, for example, has a high reflectivity, so as to be useful, for example, for re-reflecting the light passing through the light guide plate 122 back into the light guide plate 122, thereby increasing the efficiency of use of the light in the display panel 110 a.

The light guide plate 122 has high light transmittance, for example, and can be used for guiding the direction in which light travels, for example. In detail, the light guide plate 122 may provide light emitted from the light source 123 into the display panel 110 a.

The light source 123 is used for providing light to the light guide plate 122, for example. The light provided by the light source 123 may be transmitted through the light guide plate 122 and provided to the display panel 110, for example. In the present embodiment, the light source 123 is disposed adjacent to one side of the light guide plate 122. That is, the light source 123 is a side-in light source so that the thickness of the display device 10a can be reduced. In some embodiments, the light source 123 may include a plurality of leds, wherein the driving manner of the leds may include passive matrix addressing, active matrix addressing, or be controlled by an integrated circuit, which is not limited in this disclosure.

The lower diffusion sheet 124 is used, for example, to diffuse light from the light guide plate 122 and has, for example, high light transmittance, and the upper diffusion sheet 125 is used, for example, to further diffuse light from the light guide plate 122 and can be used, for example, to conceal a flaw. In the present embodiment, the upper diffusion sheet 125 is directly disposed on the lower diffusion sheet 124. In detail, no optical film layer is provided between the upper diffusion sheet 125 and the lower diffusion sheet 124, but an air gap or an adhesive layer for bonding the two may exist between the upper diffusion sheet 125 and the lower diffusion sheet 124. Based on this, the display panel 110 may receive the homogenized light from the lower diffuser 124 and the upper diffuser 125, so that the display device 10a may have a relatively wide viewing angle.

In the present embodiment, the brightness enhancement film 126 comprises a reflective polarizing brightness enhancement film (Dual Brightness Enhancement Film; DBEF) that may be used, for example, to enhance the utilization efficiency of the light from the light guide plate 122.

FIG. 1D is a graph showing the relationship between brightness and viewing angle of the display device according to FIG. 1A and the conventional display device.

As shown in fig. 1D, a graph c_10a of the luminance of the light emitting module and the viewing angle of the display device 10a of the present embodiment and a graph c_p of the luminance of the light emitting module and the viewing angle of the conventional display device are shown, wherein the compositions of the light emitting modules included in each of the display device 10a and the conventional display device are shown in, for example, table 1 below.

TABLE 1

Referring to fig. 1D and table 1, the light distribution curve c_10a provided by the light emitting module 120a in the display device 10a of the present embodiment has a relatively wide full width at half maximum FWHM1, wherein the angle difference between the angle of the viewing angle corresponding to half the intensity of the light provided by the light emitting module 120a and the positive viewing angle is greater than 40 degrees, i.e. the light provided by the light emitting module 120a has a relatively wide and gentle distribution, so that the brightness of the display panel 110a of the display device 10a of the present embodiment is uniformly distributed at each viewing angle, and still has a relatively high brightness at a relatively wide viewing angle. In contrast, the backlight module in the conventional display device includes the cross brightness enhancement film disposed between the upper and lower diffusion sheets, so that the light distribution curve c_p provided by the backlight module is concentrated at the front view angle to have a relatively narrow full width at half maximum FWHM2, that is, the brightness of the display panel in the conventional display device is rapidly attenuated with the increase of the viewing angle, so that the user has poor feeling when viewing the conventional display device.

The photodetector 200 is electrically connected to the display module 100, for example, and is used for detecting the brightness of the ambient light and outputting a sensing signal. In detail, the light detector 200 may be electrically connected to the display module 100a, for example, through the processor 300, and may detect the brightness of the external ambient light and output the sensing signal S1 to the processor 300. In some embodiments, the photodetector 200 may include a plurality of light sensing elements (not shown) and a switching element (not shown), wherein the plurality of light sensing elements may receive light and generate a sensing signal S1 (i.e., carriers, such as electrons and/or holes). After the switching element is turned on, the sensing signal S1 is transmitted to the processor 300 through the switching element, thereby achieving the effect of light detection.

The processor 300 is electrically connected to the display module 100a and the photodetector 200, for example. In some embodiments, the processor 300 may include a central processing unit, a controller, other suitable processing circuits, or a combination thereof, which is not limited in this disclosure. In the present embodiment, the processor 300 is configured to receive the sensing signal S1 from the light detector 200 and output the command signal S2 to the display module 100 according to the sensing signal, so that the display module 100a can adjust the brightness of the displayed frame according to the command signal S2. For example, when the external ambient light is brighter, the processor 300 can output the command signal S2 to the display module 100a after receiving the sensing signal S1 from the light detector 200, so that the backlight module BLU1 in the display module 100a correspondingly increases the brightness of the emitted light. In contrast, when the ambient light is dim, the processor 300 can output the command signal S2 to the display module 100 after receiving the sensing signal S1 from the light detector 200, so that the backlight module BLU1 in the display module 100a correspondingly reduces the brightness of the emitted light.

Based on this, in the present embodiment, the processor 300 can confirm the brightness of the ambient light from the outside by receiving the sensing signal S1 from the photodetector 200, and thereby send a specific command signal S2 to the display module 100a. For example, the processor 300 may send the command signal S21 to the backlight unit BLU1 in the light emitting module 120a, so that the light emitting module 120a may adjust the brightness of the light source 123 according to the brightness of the ambient light. In addition, the processor 300 may also send the command signal S22 to the monochrome liquid crystal panel Mono in the light emitting module 120a, so that the light emitting module 120a can adjust the gray level of a specific sub-pixel (not shown) according to the brightness of the ambient light, so that the user has good sensitivity when viewing the display device 10a of the present embodiment.

The optical structure layer 400 is disposed on the display module 100a, for example. In some embodiments, the optical structure layer 400 may include, for example, an anti-glare layer 410 and an anti-reflection layer 420. In some embodiments, the anti-glare layer 310 may have the anti-glare layer 410a, the anti-glare layer 410b, the anti-glare layer 410c, and the anti-glare layer 410d as shown in fig. 1E to 1H, respectively, but the disclosure is not limited thereto.

Fig. 1E is a schematic partial cross-sectional view of an anti-glare layer in the optical structure layer according to an embodiment of fig. 1A.

In some embodiments, as shown in fig. 1E, anti-glare layer 410a includes a cover plate 412a and an anti-glare film 414a.

The cover 412a is disposed on the display panel 110, for example, and is located between the display panel 110 and the anti-glare film 414a in a first direction d1 (a direction in which the display panel 110a emits light). The cover plate 412a may include, for example, reduced effects of dust prevention, scratch resistance, and moisture intrusion prevention to reduce the influence of the external environment on the components inside the display panel 110a, and may have, for example, light transmittance. In some embodiments, the material of the cover plate 412a may include glass, wherein the type of glass or its composition is not particularly limited, and may be, for example, aluminosilicate glass, lithium aluminosilicate glass, soda lime silicate glass, aluminosilicate glass, quartz glass, or other glass having light transmittance, but the disclosure is not limited thereto. In other embodiments, the material of cover 412a may include an organic material, which may be, for example, a resin, an acrylic, or other suitable organic material. A method of applying a curable composition to a support and drying the composition to cure the composition.

The anti-glare film 414a is disposed on the cover 412a, for example, and has a roughened surface 414as, for example. Based on this, the surface of the anti-glare film 414a may be used, for example, to increase diffusion of ambient light from the outside and/or reduce direct reflection of ambient light from the outside, so that the anti-glare film 414a has anti-glare properties to enhance the comfort of a user viewing the display module 100a of the display device 10 a. In some embodiments, the anti-glare film 414a may be formed by coating a curable composition on the cover plate 412a (support) and then curing the curable composition, wherein the coating process may include a spray coating process, and the curing process may include a photo-curing process or a thermal-curing process, but the disclosure is not limited thereto. In other embodiments, the anti-glare film 414a may be formed by performing a transfer process using a mold (not shown) having a surface of a concave-convex configuration after forming an anti-glare material layer (not shown) on the cover plate 412 a.

In this embodiment, the antiglare film 414a includes a curable resin (e.g., a photocurable resin or a thermosetting resin) and a plurality of silica particles. The anti-glare film 414a may include a plurality of silica particles, for example, by forming a plurality of irregular protrusions 414P on a surface 414as of the anti-glare film 414a remote from the cover plate 412a, so as to have anti-glare properties. In some embodiments, the arithmetic mean deviation (Ra) of the profile of the surface 414as of the anti-glare film 414a is between 0.1 μm and 0.5 μm (0.1 μm. Ltoreq.Ra. Ltoreq.0.5 μm), and the mean width (Rsm) of the profile of the surface 414as of the anti-glare film 414a is between 5 μm and 20 μm (5 μm. Ltoreq.Rsm. Ltoreq.50 μm). The arithmetic mean deviation (Ra) and the mean width (Rsm) of the profile of the surface 414as of the anti-glare film 414a can be obtained by measuring KLA Tencor P-6, for example, but the disclosure is not limited thereto.

Fig. 1F is a schematic partial cross-sectional view of an anti-glare layer in an optical structure layer according to another embodiment of fig. 1A. It should be noted that, fig. 1F may use the element numbers and part of the content of the embodiment of fig. 1E, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

In some embodiments, as shown in fig. 1F, the anti-glare layer 410b is a cover plate, and the cover plate has a roughened surface on the surface 410bs away from the display panel 110 a.

In detail, the anti-glare layer 410b may include a material that is the same as or similar to that of the cover plate 412a of the above-described embodiment, for example. In some embodiments, the rough surface of the anti-glare layer 410b may be formed by performing an etching process on the anti-glare material layer (not shown), wherein hydrofluoric acid may be used for etching in the etching process, but the disclosure is not limited thereto. Based on this, the surface 410bs of the anti-glare layer 410b may have a plurality of concave surfaces 410CO, for example, and the surface 410bs of the anti-glare layer 410b may also be used to increase diffusion of ambient light from the outside and/or reduce direct reflection of ambient light from the outside, for example, so that the anti-glare layer 410b has anti-glare property to enhance the comfort of the display module 100 of the display device 10a for users. In some embodiments, the arithmetic mean deviation (Ra) of the profile of the surface 410bs of the anti-glare layer 410b is between 0.1 μm and 0.5 μm (0.1 μm. Ltoreq.Ra. Ltoreq.0.5 μm), and the mean width (Rsm) of the profile of the surface 310bs of the anti-glare layer 410b is between 5 μm and 20 μm (5 μm. Ltoreq.Rsm. Ltoreq.50 μm). The above-mentioned measurement method of the arithmetic mean deviation (Ra) and the mean width (Rsm) of the profile of the surface 410bs of the anti-glare layer 410b may be the same as or similar to the measurement method of the arithmetic mean deviation (Ra) and the mean width (Rsm) of the profile of the surface 414as of the anti-glare film 414a, and will not be repeated herein.

Fig. 1G is a schematic partial cross-sectional view of an anti-glare layer in an optical structural layer according to yet another embodiment of fig. 1A. It should be noted that, fig. 1G may use the element numbers and part of the content of the embodiment of fig. 1F, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

In some embodiments, as shown in fig. 1G, the anti-glare layer 410c includes a substrate 412c and a hard coat layer 414c.

In detail, in the present embodiment, the substrate 412c is disposed on the display panel 110a and is located between the display panel 110a and the hard coating layer 414c in the first direction d1 (the direction in which the display panel 110a emits light). The substrate 412c has, for example, light transmittance and/or adhesion to the hard coat layer 414c and the display panel 110 a. In some embodiments, the material of the substrate 412c may include an organic material, an inorganic material, or a combination thereof, which is not limited in this disclosure. In other embodiments, the substrate 412c may include a polarizing plate, wherein the substrate 412c may include a structure laminated in the first direction d1 by a lower protective film (not shown), a polarizer (not shown), and an upper protective film (not shown) in this order. The hard coat layer 414c is disposed on the substrate 412c, for example, and the hard coat layer 414c includes a curable resin (for example, a photo-curable resin or a thermosetting resin) and a plurality of silica particles MP, for example. In some embodiments, the hard coating layer 414c may be formed by coating a curable composition on the substrate 412c by a coating process, and then curing the curable composition, wherein the coating process may include a spray coating process, and the curing process may include a photo-curing process or a thermal-curing process, which is not limited in this disclosure. The hard coat layer 414c includes a plurality of silica particles MP, for example, for increasing diffusion of ambient light from the outside and/or reducing direct reflection of ambient light from the outside, so that the anti-glare layer 410c has anti-glare properties. In other embodiments, the hard coating 414c includes a plurality of silica particles MP that form a plurality of irregular protrusions (not shown) on the surface of the coating 414c away from the substrate 412c, but the disclosure is not limited thereto. In some embodiments, the thickness T1 of the hard coating 414c is between 1 μm and 3 μm (T1. Ltoreq.3μm) which may provide the hard coating 414c with suitable hardness and/or strength, but the disclosure is not limited thereto.

FIG. 1H is a schematic partial cross-sectional view of an anti-glare layer in the optical structure layer according to the further embodiment of FIG. 1A. It should be noted that, fig. 1H may use the element numbers and part of the content of the embodiment of fig. 1G, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

In some embodiments, as shown in fig. 1H, the anti-glare layer 410d includes a substrate 412d and a hard coat layer 414d.

The hard coating layer 414d is disposed on the substrate 412d, and the hard coating layer 414d has a roughened surface on a surface 414ds remote from the substrate 412 c. In some embodiments, the hard coating layer 414d may have a rough surface formed by performing an etching process on a hard coating material layer (not shown), wherein hydrofluoric acid may be used for etching in the etching process, but the disclosure is not limited thereto. Based on this, the surface 414ds of the hard coating 414d may have a plurality of concave surfaces 414CO, for example, and the surface 414ds of the hard coating 414d may be used to increase the diffusion of the ambient light from the outside and/or reduce the direct reflection of the ambient light from the outside, so that the hard coating 414d has anti-glare property and improves the comfort of the display module 100a of the display device 10a for users. In some embodiments, the arithmetic mean deviation (Ra) of the profile of the surface 414ds of the hard coat layer 414d is between 0.1 μm and 0.5 μm (0.1 μm. Ltoreq.Ra. Ltoreq.0.5 μm), and the mean width (Rsm) of the profile of the surface 414ds of the hard coat layer 414d is between 5 μm and 20 μm (5 μm. Ltoreq.Rsm. Ltoreq.50 μm). The above-mentioned measurement methods of the arithmetic mean deviation (Ra) and the mean width (Rsm) of the profile of the surface 414ds of the hard coat layer 414d may be the same as or similar to the measurement methods of the arithmetic mean deviation (Ra) and the mean width (Rsm) of the profile of the surface 414as of the anti-glare film 414a of the above-mentioned embodiment, and are not described herein. In some embodiments, the thickness T2 of the hard coating 414d is between 1 μm and 3 μm (T2. Ltoreq.3 μm) which may provide the hard coating 414d with suitable hardness and/or strength, but the disclosure is not limited thereto.

FIG. 1I is a schematic partial cross-sectional view of an anti-reflective layer in the optical structure layer according to one embodiment of FIG. 1A.

The anti-reflection layer 420 is disposed on the anti-glare layer 410, for example. The anti-reflection layer 420 may be used, for example, to reduce the reflectivity of the ambient light from the outside to improve the image quality displayed by the display module 100 of the display device 10a, wherein the manner in which the anti-reflection layer 420 reduces the reflectivity of the ambient light from the outside may be, for example, refer to fig. 1I. For example, when the ambient light L from the outside irradiates the anti-reflective layer 420, a first reflected light L1 reflected by the anti-reflective layer 420 away from the surface 420s of the display module 100 and a second reflected light L2 reflected by an interface 420i between the anti-reflective layer 420 and the rest of the film layers (such as an interface between adjacent film layers in the anti-reflective layer 420 or an interface between the anti-reflective layer 420 and the anti-glare layer 410) are generated, wherein the first reflected light L1 and the second reflected light L2 have substantially opposite phases, such that destructive interference is generated between the first reflected light L1 and the second reflected light L2 to reduce the amplitude of the total reflected light reflected by the anti-reflective layer 420, so as to achieve the effect of reducing the reflectivity. The anti-reflection layer 420 may be, for example, a laminate, wherein the laminate may include, for example, high refractive index sub-layers 422 and low refractive index sub-layers 424 stacked alternately, and the total number of the plurality of high refractive index sub-layers 422 and the plurality of low refractive index sub-layers 424 is, for example, greater than or equal to 4. For example, the anti-reflective layer 420 may include, for example, four film layers of high refractive index sub-layer 422 and low refractive index sub-layer 424 overlapping each other; alternatively, the anti-reflection layer 420 may include, for example, ten layers overlapping the high refractive index sub-layer 422 and the low refractive index sub-layer 424, which is not limited in this disclosure. The anti-reflective layer 420 includes a high refractive index sub-layer 422 and a low refractive index sub-layer 424 formed by physical vapor deposition, for example, but the disclosure is not limited thereto. In some embodiments, the material of the high refractive index sublayer 422 may include Indium Tin Oxide (ITO), but the disclosure is not limited thereto This is not limiting. In other embodiments, the material of the high refractive index sublayer 422 may comprise niobium oxide (Nb ₂ O ₅ ) Other suitable oxides, or combinations thereof, the remaining oxides may be, for example, titanium oxide (TiO ₂ ) Zirconium oxide (ZrO) ₂ ) Tantalum oxide (Ta) ₂ O ₅ ) The disclosure is not limited thereto. In some embodiments, the thickness of the single high refractive index sub-layer 322 is between 1nm and 500nm, or between 1nm and 300 nm. In some embodiments, the material of the low refractive index sub-layer 424 may include silicon oxide (SiO ₂ ) However, the disclosure is not limited thereto. In other embodiments, the material of the low refractive index sub-layer 424 may include fumed silica (fused silica). In some embodiments, the thickness of the single low refractive index sub-layer 424 is between 1nm and 500nm, or between 1nm and 300 nm. Additionally, in some embodiments, the high refractive index sublayer 422 has an extinction coefficient (k) of between 0.01 and 0.05 (0.01.ltoreq.k.ltoreq.0.05) such that the anti-reflective layer 420 may produce a smoke-like effect.

The number of layers, materials and thicknesses of the high refractive index sub-layer 422 and the low refractive index sub-layer 424 in the anti-reflection layer 420 are shown in the following tables 2 and 3, but the disclosure is not limited thereto. In table 2, the stacking order of the high refractive index sub-layer 422 and the low refractive index sub-layer 424 is from top to bottom: a first low refractive index sub-layer; a first high refractive index sub-layer; a second low refractive index sub-layer; a second high refractive index sub-layer. In table 3, the stacking order of the high refractive index sub-layer 422 and the low refractive index sub-layer 424 is from top to bottom: a first low refractive index sub-layer; a first high refractive index sub-layer; a second low refractive index sub-layer, a second high refractive index sub-layer; a third low refractive index sub-layer; a third high refractive index sub-layer; a fourth low refractive index sub-layer; a fourth high refractive index sub-layer; a fifth low refractive index sub-layer; and a fifth high refractive index sub-layer.

TABLE 2]The material of the high refractive index sublayer 422 includes niobium oxide (Nb ₂ O ₅ ) And the material of the low refractive index sub-layer 424 includes silicon oxide (SiO ₂ )。

	Thickness (nm)
		A first low refractive index sub-layer	86.7
A first high refractive index sub-layer	110.5
		A second low refractive index sub-layer	36.0
Second high refractive index sublayer	11.7

TABLE 3]The material of the high refractive index sub-layer 422 comprises Indium Tin Oxide (ITO) and the material of the low refractive index sub-layer 424 comprises silicon oxide (SiO ₂ )。

	Thickness (nm)
		A first low refractive index sub-layer	84.2
A first high refractive index sub-layer	72.09
		A second low refractive index sub-layer	14.14
Second high refractive index sublayer	25.73
		Third low refractive index sublayer	134.55
Third high refractive index sublayer	15.07
		Fourth low refractive index sublayer	27.56
Fourth high refractive index sublayer	259.91
		Fifth low refractive index sublayer	24.96
Fifth high refractive index sublayer	21.47

In this embodiment, the gloss level of the optical structure layer 400 is between 4GU and 35GU (4 GU. Ltoreq. The gloss level of the first optical structure layer 300. Ltoreq. 35 GU). For example, the gloss of the optical structure layer 400 may be between 4GU and 30GU (4 GU is less than or equal to the gloss of the optical structure layer 400 is less than or equal to 30 GU), or may be between 4GU and 20GU (4 GU is less than or equal to the gloss of the optical structure layer 400 is less than or equal to 20 GU), but the disclosure is not limited thereto. The gloss of the optical structure layer 400 may be obtained by measuring by BYK-4446 at an angle of 60 ° and by using the gloss specification of JIS Z8741, but the disclosure is not limited thereto. In other embodiments, the gloss of the optical structure layer 400 may be measured at an angle of 20 ° or an angle of 85 °.

In this embodiment, the reflectance of the optical structure layer 400 including specular reflection light (Specular Component Included; SCI) may be between 3% and 6% (3% versus 6% for the optical structure layer 400 including specular reflection light (SCI)). For example, the reflectivity of the optical structure layer 400 including specular reflection light (SCI) may be between 4% and 6% (4% and 6% of the reflectivity of the optical structure layer 400 including specular reflection light (SCI)), but the disclosure is not limited thereto. The reflectivity of the optical structure layer 400 including specular reflection light (SCI) can be obtained by measuring the reflectivity of the optical structure layer using Konica-Minolta CM-3600-d in the visible light band, but the disclosure is not limited thereto. For example, the reflectivity of the optical structure layer 400, including specular reflection (SCI), can be measured at 550 nm.

In this embodiment, the transmittance of the optical structure layer 400 is between 70% and 98% (70% and 98% of the transmittance of the optical structure layer 400). For example, the transmittance of the optical structure layer 400 may be between 70% and 95% (70% and 95% of the transmittance of the optical structure layer 400), but the disclosure is not limited thereto. Based on this, the optical structure layer 400 of the present embodiment can provide relatively good light transmittance. The transmittance of the optical structure layer 400 can be obtained by measuring the transmittance in the visible light band using, for example, BYK-4725, but the disclosure is not limited thereto. For example, the reflectivity of the optical structure layer 400, including specular reflection (SCI), can be measured at 550 nm.

In the present embodiment, by providing the optical structure layer 400 disposed on the display module 100a with the above architecture, the glossiness of the display module 100 may be less than 5GU, and the reflectivity of the display module 100 including specular reflection light (SCI) may be less than 3%. In addition, in the present embodiment, the ratio of the reflectance excluding specular reflection light (Specular Component Excluded; SCE) of the display module 100 to the reflectance including specular reflection light (SCI) may be greater than 0.6 and less than 1 (0.6 < SCE of the display module 100/SCI <1 of the display module 100). The reflectivity of the display module 100 excluding specular reflection (SCE) can be obtained by measuring the specular reflection (SCE) in the visible wavelength band using, for example, the _konica-Minolta CM-3600-d, but the disclosure is not limited thereto. For example, the reflectivity of the display module 100a excluding specular reflection (SCE) can be measured under light with a wavelength of 550 nm. It should be noted that the glossiness of the display module 100a and the measurement method including specular reflection (SCI) may be the same or similar to that of the optical structure layer 400 and the measurement method including specular reflection (SCI), and will not be described herein.

Based on this, by disposing the optical structure layer 400 on the display module 100a, the display module 100a of the display device 10a of the present embodiment may have relatively good anti-glare performance, which may effectively scatter the ambient light from the outside, and reduce the influence of the reflection of the ambient light from the outside when the user views the display module 100a of the display device 10a, thereby improving the display quality of the display module 100a of the display device 10 a. Based on this, when a user views an electronic device (e.g., a digital gallery, a mobile phone, a tablet computer, a public information display, or other suitable electronic devices) including the display device 10a of the present embodiment, the user can experience a paper-like feel of the screen displayed by the electronic device.

Fig. 2 is a schematic cross-sectional view of a display device according to a second embodiment of the disclosure. It should be noted that, the embodiment of fig. 2 may use the element numbers and part of the content of the embodiment of fig. 1A, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

Referring to fig. 2, the main differences between the display device 10b of the present embodiment and the display device 10a described above are: the light emitting module 120b in the display module 100b of the display device 10b includes a direct type light source, and does not include a single color liquid crystal panel Mono.

In detail, in the light emitting module 120b, the light source 123' included in the backlight unit BLU2 is a direct type light source. In some embodiments, the light source 123' may include a plurality of leds, wherein the driving manner of the leds may include passive matrix addressing, active matrix addressing, or be controlled by an integrated circuit, which is not limited in this disclosure. In the passive matrix addressing driving mode, the light emitting diodes are arranged in an array and electrically connected to the driving circuit, wherein each light emitting diode can emit light by providing signals through two mutually perpendicular signal lines in the driving circuit. In the driving mode of active matrix addressing, the light emitting diodes are arranged in an array and are electrically connected with independent driving circuits, wherein each light emitting diode can provide a signal to emit light by a transistor in the driving circuit. In the driving mode controlled by the integrated circuit, the light emitting diodes are arranged in an array and each emits light controlled by the integrated circuit. Based on this, the light emitting module 120b can achieve finer local dimming.

Fig. 3A is a schematic cross-sectional view of a display device according to a third embodiment of the disclosure. It should be noted that, the embodiment of fig. 3A may use the element numbers and part of the content of the embodiment of fig. 1A, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

Referring to fig. 3A, the main differences between the display device 10c of the present embodiment and the display device 10a described above are: the display module 100c of the display device 10c is an organic light emitting diode display module.

In this embodiment, the display module 100c may include an active device array substrate TFT, an organic light emitting layer OEL and a polarizing layer P, wherein the active device array substrate TFT, the organic light emitting layer ET and the polarizing layer P are stacked in this order in the first direction d1, for example. In some embodiments, the display module 100b may further include a color filter (not shown) disposed on the organic light emitting layer OEL, which is not limited in the present disclosure.

Fig. 3B is a schematic cross-sectional view of a display device according to a fourth embodiment of the disclosure. It should be noted that, the embodiment of fig. 3B may use the element numbers and part of the content of the embodiment of fig. 1A, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

Referring to fig. 3B, the main differences between the display device 10d of the present embodiment and the display device 10a described above are: the display module 100d of the display device 10d is a micro light emitting diode display module or a sub-millimeter light emitting diode display module.

In this embodiment, the display module 100d may include an active device array substrate TFT, a light emitting layer EL and a filter layer C, wherein the active device array substrate TFT, the light emitting layer EL and the filter layer C are stacked in this order in the first direction d1, for example. In some embodiments, the light emitting layer EL may include a sub-millimeter light emitting diode or a micro light emitting diode, and the filter layer CL may include a color filter layer or a quantum dot color filter layer, which is not limited in this disclosure.

Fig. 4 is a schematic cross-sectional view of a display device according to a fifth embodiment of the disclosure. It should be noted that, the embodiment of fig. 4 may use the element numbers and part of the content of the embodiment of fig. 2, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

Referring to fig. 4, the main differences between the display device 10e of the present embodiment and the display device 10b are as follows: the light emitting module 120e in the display module 100e includes a single color liquid crystal panel Mono.

In the present embodiment, by making the light emitting module 120e include the combination of the single color liquid crystal panel Mono and the light source 123' (direct type light source), the light emitting module 120e can achieve finer local dimming, and the overall contrast of the image displayed by the display module 100e can be improved.

Fig. 5 is a schematic cross-sectional view of a display device according to a sixth embodiment of the disclosure. It should be noted that, the embodiment of fig. 5 may use the element numbers and part of the content of the embodiment of fig. 1A, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

Referring to fig. 5, the main differences between the display device 10f of the present embodiment and the display device 10a described above are: the light emitting module 120f in the display device 10f is disposed between the optical structure layer 400 and the display panel.

In detail, in the present embodiment, the light emitting module 120f includes a display panel 110f and a front light module FLU, wherein the display panel 110f is a reflective liquid crystal display panel, and the front light module FLU may include a light guide plate (not shown), a side-in light source (not shown), and other suitable components for displaying images of the auxiliary display panel 110 f. For example, when the external ambient light is brighter, the processor 300 can output the command signal S2 to the display module 100f after receiving the sensing signal S1 from the light detector 200, so that the front light module FLU in the display module 100f correspondingly reduces the brightness of the emitted light. In contrast, when the external ambient light is dim, the processor 300 can output the command signal S2 to the display module 100f after receiving the sensing signal S1 from the light detector 200, so that the front light module fli in the display module 100f correspondingly increases the brightness of the emitted light.

In the present embodiment, the display panel 110f is a cholesteric liquid crystal display panel, but the disclosure is not limited thereto. The display panel 110f may include, for example, a light absorbing layer AL, a first cholesteric liquid crystal module 112, a second cholesteric liquid crystal module 114, and a third cholesteric liquid crystal module 116, wherein the light absorbing layer AL, the first cholesteric liquid crystal module 112, the second cholesteric liquid crystal module 114, and the third cholesteric liquid crystal module 116 are stacked in this order in, for example, a first direction d 1.

The light absorbing layer AL may be used for absorbing light that is not reflected by the first cholesteric liquid crystal module 112, the second cholesteric liquid crystal module 114, and the third cholesteric liquid crystal module 116, for example, so as to improve the contrast of the image displayed by the display device 10 f. In some embodiments, the material of the light absorbing layer AL may include a photoresist material or ink.

The first cholesteric liquid crystal module 112 includes, for example, a first cholesteric liquid crystal layer CLCD1, an upper electrode TE1, a lower electrode BE1, and a sealant SL1. The first cholesteric liquid crystal layer CLCD1 may be used for reflecting a first light having a first wavelength range, for example, a red light, but the disclosure is not limited thereto. The upper electrode TE1 and the lower electrode BE1 are disposed on opposite sides of the first cholesteric liquid crystal layer CLCD1, respectively, so that the first cholesteric liquid crystal layer CLCD1 can reflect the first light having the first wavelength range by applying different voltages to the upper electrode TE1 and the lower electrode BE1 to generate a voltage difference to change the arrangement of liquid crystal molecules in the first cholesteric liquid crystal layer CLCD 1. The sealant SL1 may BE disposed between the upper electrode TE1 and the lower electrode BE1, for example, and may surround the first cholesteric liquid crystal layer CLCD1, for example, to reduce the possibility of the first cholesteric liquid crystal layer CLCD1 flowing out.

The second cholesteric liquid crystal module 114 includes, for example, a second cholesteric liquid crystal layer CLCD2, an upper electrode TE2, a lower electrode BE2, and a sealant SL2. The second cholesteric liquid crystal layer CLCD2 may be used for reflecting a second light having a second wavelength range, for example, a green light, but the disclosure is not limited thereto. The upper electrode TE2, the lower electrode BE2 and the sealant SL2 may BE the same as or similar to the upper electrode TE1, the lower electrode BE1 and the sealant SL1, respectively, and will not BE described again.

The third cholesteric liquid crystal module 116 includes, for example, a third cholesteric liquid crystal layer CLCD3, an upper electrode TE3, a lower electrode BE3, and a sealant SL3. The third cholesteric liquid crystal layer CLCD3 may be configured to reflect a third light having a third wavelength range, for example, but the disclosure is not limited thereto. The upper electrode TE3, the lower electrode BE3, and the sealant SL3 may BE the same as or similar to the upper electrode TE1, the lower electrode BE1, and the sealant SL1, respectively, and will not BE described again.

Fig. 6 is a schematic cross-sectional view of a display device according to a seventh embodiment of the disclosure. It should be noted that, the embodiment of fig. 6 may use the element numbers and part of the content of the embodiment of fig. 5, where the same or similar numbers are used to denote the same or similar elements, and descriptions of the same technical content are omitted.

Referring to fig. 6, the main differences between the display device 10g of the present embodiment and the display device 10f described above are: the display panel 110g is an electrophoretic display panel.

In the present embodiment, the display panel 110g may include an active device array substrate TFT, an electrophoretic layer EP and a color filter substrate CF, wherein the active device array substrate TFT, the electrophoretic layer EP and the color filter substrate CF are stacked in this order in the first direction d1, for example. The electrophoretic layer EP may include, for example, a plurality of charged particles (not shown) and a fluid (not shown), wherein the plurality of charged particles may be dispersed in the fluid, but the disclosure is not limited thereto.

Fig. 7A is a graph showing a relationship between the brightness of a screen and the brightness of an environment of a display device according to an embodiment of the present disclosure, and fig. 7B is a graph showing a relationship between the brightness of a screen and the brightness of an environment of a display device according to another embodiment of the present disclosure.

Referring to fig. 7A, fig. 7A shows graphs c1_10a, c2_10a of the luminance of the screen of the display device 10a and the ambient light (illuminance) and graphs c_p1 of the luminance of the screen of the conventional display device and the ambient light, wherein the luminance of the screen increases as the ambient light increases due to the backlight module included in the display device 10a and the conventional display device.

In the present embodiment, the relationship between the screen brightness and the ambient light brightness of the display device 10a satisfies the following relationship 1: y is ₁ ＝a ₁ *x ₁ +C ₁ Wherein y is ₁ For the brightness of the picture of the display device 10a, x ₁ For ambient light level, C ₁ Is constant and a ₁ The screen brightness of the display device 10a is changed according to the ambient light level. In the present embodiment, a ₁ Between 0.25 and 0.41 (a is more than or equal to 0.25) ₁ Less than or equal to 0.41). I.e. when a ₁ In the above range, the display device 10a can have good display quality under a specific ambient light level.

As can be seen from fig. 7A, the luminance of the light emitting module 120a of the display device 10a emits light at the same ambient light level is about 40% -60% of the luminance of the light emitting module of the conventional display device (the region defined between the relationship curve c1_10a and the relationship curve c2_10a shown in fig. 7A), that is, the luminance of the light emitting module 120a of the display device 10a emits light is relatively low, which can reduce the power consumed by the display device 10 a.

Referring to fig. 7B, fig. 7B shows graphs c1_10f, c2_10f of the image brightness and the ambient light brightness of the display device 10f and graphs c_p2 of the image brightness and the ambient light brightness of the existing display device, wherein the display device 10f and the existing display device include light sources from the front light module, and therefore the image brightness decreases with increasing ambient light brightness. It should be noted that, when the ambient light exceeds 100lux, the auxiliary light source of the front light module may not be used.

In the present embodiment, the relationship between the screen brightness and the ambient light brightness of the display device 10f satisfies the following relationship 1: y is ₂ ＝a ₂ *x ₂ +C ₂ Wherein y is ₂ For the brightness of the display device 10f, x ₂ For ambient light level, C ₂ Is constant and a ₂ The screen brightness of the display device 10f is changed according to the ambient light level. In the present embodiment, a ₂ Between-1.10 and-0.75 (-1.10 is less than or equal to a) ₂ Less than or equal to-0.75). I.e. when a ₂ In the above range, the display device 10f can have good display quality under a specific ambient light level.

As can be seen from fig. 7B, in the case of the same ambient light brightness, the brightness of the light emitting module 120f of the display device 10f emits light about 80% -120% of the brightness of the light emitting module of the existing display device (as the region defined between the relationship curve c1_10f and the relationship curve c2_10f shown in fig. 7B), that is, the brightness of the light emitting module 120f of the display device 10f emits light under specific conditions may be relatively low, which may reduce the power consumed by the display device 10 f.

In summary, by making the glossiness of the optical structure layer in the display device provided by the embodiment of the disclosure between 4GU and 35GU and the reflectivity of the optical structure layer including specular regular reflection light (SCI) between 3% and 6%, the display device of the embodiment of the disclosure may have relatively low glossiness and relatively low reflectivity including specular regular reflection light (SCI), so that the anti-glare performance of the display device of the embodiment of the disclosure may be improved, and ambient light from the outside may be effectively scattered. Based on this, when a user views the display device including the embodiments of the present disclosure, the influence of reflection of ambient light from the outside can be reduced, and a display device with high display quality can be experienced.

Furthermore, the display device provided by the embodiment of the disclosure includes a light detector for detecting ambient light, and the brightness of the screen of the display module can be correspondingly adjusted by making the ambient light detected by the light detector, so as to further improve the display quality of the display device.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (20)

1. A display device, comprising:

the display module is used for displaying pictures;

the light detector is electrically connected to the display module and used for detecting the brightness of the ambient light and outputting a sensing signal;

the processor is electrically connected with the display module and the light detector and is used for receiving the sensing signal and outputting an instruction signal to the display module according to the sensing signal so that the display module adjusts the brightness of the picture according to the instruction signal; and

An optical structure layer arranged on the display module,

wherein the gloss of the optical structural layer is between 4GU and 35GU, and the reflectance of the optical structural layer including specular reflection (SCI) is between 3% and 6%.

2. The display device of claim 1, wherein the display module comprises a display panel and a light emitting module, the light emitting module is configured to provide light to the display panel, and the light emitting module adjusts brightness of the light according to the command signal.

3. The display device of claim 2, wherein an angle of view corresponding to half of the intensity of the light rays differs from a positive angle of view by more than 40 degrees.

4. The display device of claim 2, wherein the light emitting module comprises an upper diffusion film and a lower diffusion film, and the upper diffusion film is disposed directly on the lower diffusion film.

5. The display device of claim 4, wherein the light emitting module further comprises a reflective polarizing brightness enhancing film, and the reflective polarizing brightness enhancing film is disposed on the upper diffusion film.

6. The display device according to claim 2, wherein the display panel is disposed between the optical structure layer and the light emitting module, and the display panel comprises a liquid crystal panel and a color filter layer.

7. The display device according to claim 6, wherein a relation between a luminance of the screen of the display device and a luminance of the ambient light satisfies the following relation:

relation 1: y is ₁ ＝a ₁ *x ₁ +C ₁ ，

Wherein y is ₁ For the brightness, x, of the picture of the display device ₁ C is the brightness of the ambient light ₁ Is constant and a ₁ To the extent that the brightness of the picture of the display device changes due to the brightness of the ambient light,

wherein a is ₁ Between 0.25 and 0.41.

8. The display device according to claim 2, wherein the light-emitting module is disposed between the optical structure layer and the display panel, and the display panel comprises a cholesteric liquid crystal display panel or an electrophoretic display panel.

9. The display device according to claim 8, wherein a relation between a luminance of the screen of the display device and a luminance of the ambient light satisfies the following relation:

relation 2: y is ₂ ＝a ₂ *x ₂ +C ₂ ，

Wherein y is ₂ For the brightness, x, of the picture of the display device ₂ C is the brightness of the ambient light ₂ Is constant and a ₂ To the extent that the brightness of the picture of the display device changes due to the brightness of the ambient light,

wherein a is ₂ Between-1.10 and-0.75.

10. The display device according to claim 2, wherein the light emitting module further comprises a backlight unit and a monochrome liquid crystal panel disposed between the backlight unit and the display panel.

11. The display device of claim 1, wherein the display module is an organic light emitting diode display module, a micro light emitting diode display module, or a sub-millimeter light emitting diode display module.

12. The display device of claim 1, wherein the optical structure layer further has a gloss level between 4GU and 30 GU.

13. The display device of claim 12, wherein the optical structure layer further has a gloss level between 4GU and 20 GU.

14. The display device of claim 1, wherein the optical structure layer has a transmittance of between 70% and 98%.

15. The display device of claim 14, wherein the transmittance of the optical structure layer is more between 70-95%.

16. The display device of claim 1, wherein the reflectivity of the specular included light of the optical structure layer is between 4-6%.

17. The display device according to claim 1, wherein the optical structure layer comprises an anti-glare layer and an anti-reflection layer, wherein the anti-reflection layer is provided on the anti-glare layer.

18. The display device of claim 17, wherein the anti-reflective layer comprises a plurality of high refractive index sublayers and a plurality of low refractive index sublayers of an interactive stack.

19. A display device, comprising:

a display module;

the light-emitting module comprises a plurality of independently controllable light-emitting areas and is used for emitting light towards the display module; and

an optical structure layer arranged on the display module,

wherein the gloss of the optical structural layer is between 4GU and 35GU, and the reflectance of the optical structural layer including specular reflection (SCI) is between 3% and 6%.

20. The display device of claim 19, wherein the light emitting module further comprises a backlight unit and a monochrome liquid crystal panel disposed between the backlight unit and the display panel.