Display device

Abstract

The display device provided by the embodiment of the present application adds a phase change film layer to replace the liquid crystal in the prior art, and sets a light source module, a transmission-reflection film layer, a filter film layer and a display layer; the light emitted by the light source module is reflected to the filter film layer and the phase change film layer after passing through the transmission-reflection film layer, and is emitted to the display layer after being processed in the filter film layer and the phase change film layer and passing through the transmission-reflection film layer again, so that the display device can display a picture without liquid crystal, and the response speed of the display device is improved through the foregoing design, so that the display device can realize high-frequency refreshing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device. BACKGROUND

[0002] The display technology with ultra-high refresh rate has always been the research focus in the display field. With the continuous improvement of communication capability, people's requirements for display refresh rate are also getting higher and higher. For example, the liquid crystal needs to respond within at least 2 milliseconds at a refresh rate of 480Hz. Higher refresh rate will require higher response time of liquid crystal. SUMMARY

[0003] Embodiments of the present application provide a display device, aiming to solve the problem of low response speed of the display device in the prior art and the problem of inability to realize high refresh rate.

[0004] To solve the above problems, the present application provides a display device, which comprises:

[0005] a light source module;

[0006] a transflective film layer, which is arranged on the side of the vertical line where the light source module is located, and which is located on the same horizontal line as the light source module;

[0007] a filter film layer, which is arranged on the vertical line where the transflective film layer is located, and which is arranged at an angle of 90° with the straight line of the incident light, and the intersection of the vertical line of the filter film layer and the straight line of the incident light is located on the transflective film layer;

[0008] a phase change film layer, which is arranged on the vertical line where the transflective film layer is located, and the distance between the phase change film layer and the transflective film layer is greater than the distance between the filter film layer and the transflective film layer;

[0009] a display layer, which is arranged on the vertical line where the transflective film layer is located, and which receives the light of the preset wave band transmitted by the transflective film layer and presents three primary colors of light;

[0010] The display layer, the transflective film layer, the filter film layer and the phase change film layer are located on the same vertical line, and the filter film layer and the phase change film layer are arranged on the same side of the transflective film layer, and the display layer is arranged on the other side of the transflective film layer.

[0011] In a possible embodiment, the light source module comprises:

[0012] a light emitting unit;

[0013] A light collimation module is arranged on one side of the light emitting unit and is on the same horizontal line as the light emitting unit.

[0014] In a possible embodiment, the transflective film layer is a semi-transmissive and semi-reflective film.

[0015] In a possible embodiment, the phase change film layer is a multi-film layer structure, and the phase change film layer comprises a film layer made of antimony trisulfide material.

[0016] In a possible embodiment, the phase change film layer switches between a crystalline state and an amorphous state under the control of voltage.

[0017] In a possible embodiment, the phase change film layer further comprises one or more of a silver layer, a silicon dioxide layer and a titanium dioxide layer.

[0018] In a possible embodiment, all the multi-film layers in the phase change film layer are film layers with adjustable thickness.

[0019] In a possible embodiment, the display layer comprises a fluorescent layer arranged on the side close to the transflective film layer and a color resistance layer arranged on the side away from the transflective film layer.

[0020] In a possible embodiment, the fluorescent layer is a yellow fluorescent layer.

[0021] In a possible embodiment, the filter film layer is a multi-layer structure, and the filter film layer comprises at least two of a silver layer, a silicon dioxide layer and a titanium dioxide layer.

[0022] The display device provided by the embodiments of the present application adds a phase change film layer to replace the liquid crystal in the prior art, and the light source module, the transflective film layer, the filter film layer and the display layer are arranged; the light emitted by the light source module is reflected to the filter film layer and the phase change film layer after passing through the transflective film layer, and the light is processed in the filter film layer and the phase change film layer and then emitted to the display layer through the transflective film layer, so that the display device can display a picture without liquid crystal, and through the foregoing design, the response speed of the display device is improved, so that the display device can realize high-frequency refresh. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of an embodiment of the display device provided by the embodiments of the present application;

[0024] Figure 2 is a structural schematic diagram of an embodiment of the filter film layer provided by the embodiments of the present application;

[0025] Figure 3 is a structural schematic diagram of an embodiment of the reflectivity spectrum of the phase change material in an amorphous state provided by the embodiments of the present application.

[0026] Figure 4 The reflectivity spectrum of the phase change material in the crystalline state provided by the embodiment of the present application is shown in the following embodiment schematic diagram.

[0027] Figure 5 The transmittance spectrum of the filter film layer provided by the embodiment of the present application is shown in the following embodiment schematic diagram.

[0028] Figure 6 The reflectivity spectrum after the filter film layer and the phase change film layer provided by the embodiment of the present application is shown in the following embodiment schematic diagram.

[0029] Figure 7 The phase change film layer structure distribution provided by the embodiment of the present application is shown in the following embodiment schematic diagram. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0032] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0033] This invention provides a display device, which will be described in detail below.

[0034] like Figure 1 The diagram shown is a structural schematic of an embodiment of the display device provided in this application. Figure 1 The display device may include:

[0035] The light source module 10 in this embodiment is mainly used to emit collimated incident light.

[0036] The transflective film layer 20 is disposed on the side of the vertical line where the light source module 10 is located, and the transflective film layer and the light source film layer are located on the same horizontal line.

[0037] In this embodiment, the transmissive and reflective film layer 20 is mainly used to transmit a portion of the light and reflect another portion of the light; the transmissive and reflective film layer 20 is also used to receive the incident light emitted from the light source module 10 and reflect a portion of the light to the filter film layer 30.

[0038] The filter film 30 is disposed on the vertical line where the transmissive and reflective film 20 is located, and the vertical line of the filter film 30 is at 90° with the straight line of the incident light; and the intersection of the vertical line of the filter film 30 and the straight line of the incident light is at the transmissive and reflective film 20.

[0039] In this embodiment, the filter film 30 is used to receive the light reflected by the transmissive film 20 and project light of a preset wavelength onto the phase change film 40.

[0040] The phase change film layer 40 is disposed on the vertical line where the transflection film layer 20 is located, and the distance between the phase change film layer 40 and the transflection film layer 20 is greater than the distance between the filter film layer 30 and the transflection film layer 20.

[0041] In this embodiment, the phase change film layer 40 is used to receive light of a preset wavelength band and, after adjusting the light intensity of the preset wavelength band, reflect it to the transmissive film layer 20.

[0042] The display layer 50 is arranged on the vertical line where the transflective film layer 20 is located, and the display layer 50 is used to receive the light of the preset wave band projected by the transflective film layer 20 and present three primary color lights.

[0043] The display device provided by the embodiment of the present application adds a phase change film layer to replace the liquid crystal in the prior art, and the light source module, the transflective film layer, the filter film layer and the display layer are arranged; the light emitted by the light source module is reflected to the filter film layer and the phase change film layer after passing through the transflective film layer, and the light is processed in the filter film layer and the phase change film layer and then emitted to the display layer through the transflective film layer, so that the picture can be displayed without liquid crystal, and through the foregoing design, the response speed of the display device is improved, so that the display device can realize high-frequency refreshing.

[0044] In the Figure 1 embodiment, the display layer 50 and the filter film layer 30 are arranged oppositely, and the phase change film layer 40 and the filter film layer 30 are arranged on the same side, that is, the display layer 50 and the phase change film layer 40 are also arranged oppositely; and the phase change film layer 40 is closer to the filter film layer 30 than the display layer 50.

[0045] Meanwhile, in the embodiment of the present application, the transflective film layer 20 is arranged between the phase change film layer 40 and the display layer 50. The light source module 10 is arranged on the side of the vertical line formed by the display layer 50-transflective film layer 20-filter film layer 30-phase change film layer 40 structure, and is not arranged on the vertical line formed by the display layer 50-transflective film layer 20-filter film layer 30-phase change film layer 40 structure. Meanwhile, the light source module 10 and the transflective film layer 20 are located at the same horizontal height; that is, the light source module 10 and the transflective film layer 20 are located on the same horizontal line.

[0046] Please refer to Figure 1 , in the Figure 1 embodiment, the light source module 10 can further include:

[0047] The light emitting unit 101 emits incident light.

[0048] The light collimation module 102 is arranged on the side of the light emitting unit 101, receives the incident light emitted by the light emitting unit 101, and collimates the incident light and then photographs the transflective film layer 20.

[0049] Specifically, the light source module 10 in the embodiment of the present application is equivalent to the light emitting module in the existing display device, such as the backlight source. The light source module 10 usually includes the light emitting unit 101 actually emitting light and the light collimation module 102 processing the light.

[0050] Since the light emitted by the light emitting unit 101 is usually divergent, the light emitted by the light emitting unit 101 needs to be collimated by the light collimation module 102, so that the divergent light becomes parallel collimated light. In some embodiments, the collimation module 102 can be a collimation lens.

[0051] The collimated light then exits the collimation module 102 and is emitted to the transflector layer 20. The transflector layer 20 is a semi-transmissive and semi-reflective film; that is, when light passes through the transflector layer 20, half of the light directly passes through the transflector layer 20, and the other half of the light is reflected by the transflector layer 20.

[0052] Please refer to Figure 1 When the horizontal collimated light emitted by the light source module 10 reaches the transflector layer 20, half of the light directly passes through the transflector layer 20 and exits, and the other half of the light is reflected by the transflector layer 20. The originally horizontal collimated light becomes vertical after being reflected.

[0053] The light that becomes vertical then reaches the filter film layer 30 and the phase change film layer 40. In embodiments of the present application, the filter film layer 30 and the phase change film layer 40 are both unit modules that process light, so that the processed light can reach the display layer 50 to realize picture display. The filter film layer 30 and the phase change film layer 40 are both multi-layer structures.

[0054] Specifically, in some embodiments of the present application, the filter film layer 30 can include at least two of a silver layer, a silicon dioxide layer, and a titanium dioxide layer. That is, in the multi-layer structure of the filter film layer 30, there are at least any two of a silver film layer, a silicon dioxide film layer, and a titanium dioxide film layer.

[0055] It should be noted that the above embodiments only describe the materials of the different film layers in the filter film layer 30, and do not mean that the filter film layer 30 only includes two film layers or three film layers. In other embodiments, the number of film layers in the filter film layer 30 is greater than or equal to 3. Regardless of the number of film layers in the filter film layer 30, in general, the different film layers in the multi-layer structure are alternately arranged as silver layers, silicon dioxide layers, and titanium dioxide layers.

[0056] As shown in Figure 2 , it is a schematic diagram of an embodiment of the filter film layer structure provided by the embodiments of the present application. According to Figure 2 It can be seen that the number of film layers in the filter film layer 30 is much greater than 3; at the same time, the different film layers in the filter film layer 30 are alternately arranged as silver layers, silicon dioxide layers, and titanium dioxide layers.

[0057] It should be noted that in the embodiments of the present application, the thickness of each film layer in the multi-layer structure in the filter film layer 30 is different; that is, the multi-layer structure in the filter film layer 30 is a film layer with adjustable thickness. For details, please refer to Figure 2 In Figure 2 , the plurality of silver layers, silica layers, and titanium dioxide layers are arranged alternately; and the film layer thickness of each of the plurality of silver layers, silica layers, and titanium dioxide layers is different.

[0058] Meanwhile, in the embodiments of the present application, the phase change film layer 40 is also a multi-layer structure, and the phase change film layer 40 also includes one or more of silver layers, silica layers, and titanium dioxide layers. However, unlike the filter film layer 30, the phase change film layer 40 in the embodiments of the present application needs to include a film layer made of a phase change material; and the phase change film layer made of a phase change material switches between a crystalline state and an amorphous state under the control of voltage.

[0059] Among them, the phase change material (PCM-Phase Change Material) refers to a substance that changes physical properties with temperature and can provide latent heat. The process of changing the physical properties of the phase change material is called phase change process.

[0060] In a specific embodiment, the phase change material can be antimony trisulfide (Sb2S3); the phase change film layer 40 needs to include a film layer formed of antimony trisulfide material. At this time, the phase change film layer 40 can only include any one of silver layers, silica layers, and titanium dioxide layers.

[0061] As shown in Figure 3 , it is an embodiment of the reflectivity spectrum of the phase change material in the amorphous state provided by the embodiments of the present application; Figure 4 , it is an embodiment of the reflectivity spectrum of the phase change material in the crystalline state provided by the embodiments of the present application; Figure 5 , it is an embodiment of the transmittance spectrum of the filter film layer provided by the embodiments of the present application. Figure 3 、 Figure 4 and Figure 5 The abscissa in the above figures is wavelength (wavelength), unit: nanometer nm; and the ordinate is reflectivity (reflectivity).

[0062] It can be seen from Figure 3 and Figure 4 that when the phase change material layer in the phase change film layer 40 switches from an amorphous state to a crystalline state, the blue light high reflectivity peak of the 465 nanometer to 470 nanometer band will appear blue shift phenomenon. It can be seen from Figure 5 that the filter film layer 30 can only transmit blue light of the 465 nanometer to 470 nanometer band, and plays a filtering role in screening the wavelength.

[0063] Figure 6This is a schematic diagram of the reflectance spectrum after passing through a filter film and a phase change film, provided in an embodiment of this application. Figure 6 In this diagram, the horizontal axis represents wavelength, measured in nanometers (nm); while the horizontal axis represents reflectivity. Figure 6 The reflectance of the material with the vertex at the top is the reflectance of the amorphous phase change material, while the reflectance of the material with the vertex at the bottom is the reflectance of the crystalline phase change material. Figure 6 The image shows the light reflectance spectra of the combination of filter film 30 and phase change film 40 under different conditions.

[0064] according to Figure 6 It can be seen that by combining the filter film 30 and the phase change film 40 in the embodiments of this application, a combined film layer with adjustable intensity of blue light in the 465 nm to 470 nm wavelength band can be obtained; and the light can be filtered in this way.

[0065] like Figure 7 The image shown is a schematic diagram of an embodiment of the phase change film structure distribution provided in this application. Figure 7 In the phase change film layer 40, the number of film layers can also be greater than or equal to 3, and it will definitely include a film layer made of phase change material (Sb2S3).

[0066] The phase change film layer 40 typically consists of alternating layers of phase change material (Sb₂S₃), silver, silicon dioxide, and titanium dioxide. Similar to the filter film layer 30, each layer in the phase change film layer 40 has a different thickness; that is, all layers in the phase change film layer 40 have adjustable thickness. Even though the phase change film layer 40 includes multiple layers of phase change material (Sb₂S₃), silver, silicon dioxide, and titanium dioxide, the thicknesses of these layers are all different.

[0067] After being filtered by the filter layer 30 and the phase change film layer 40, the light continues to be sent to the transflective film layer 20. Similarly, part of the light passing through the transflective film layer 20 is reflected, while the other part passes through the transflective film layer 20 and is directed to the display layer 50.

[0068] Please refer to Figure 1 In the embodiments of this application, the display layer 50 may include a fluorescent layer 501 and a color resist layer 502; and the fluorescent layer 501 is disposed on the side close to the transflective film layer 20, and the color resist layer 502 is disposed on the side away from the transflective film layer 20.

[0069] Furthermore, in some embodiments, the fluorescent layer 501 can be a yellow fluorescent layer.

[0070] Please refer to Figure 1 For the display device shown in Figure 1 The white light emitted by the light emitting unit 101 is collimated by the collimating lens 4, and the collimated white light is partially reflected to the filter film layer 30 and the phase change film layer 40 through the transflector layer 20. The white light is further screened by the filter film layer 30 and the phase change film layer 40, and the blue light of a specific wavelength can be reflected; the reflected blue light is sent to the transflector layer 20 again, and at this time, part of the blue light directly passes through the transflector layer 20 to reach the yellow fluorescent layer 501 and then emits white light. The white light emitted by the yellow fluorescent layer 501 is incident into the red, green and blue color resist in the color resist layer 502, respectively, to present red, green and blue three primary color lights.

[0071] Meanwhile, in the embodiment of the present application, the regulation of the gray scale of each pixel in the display layer is mainly realized by switching the amorphous state to the crystalline state of the phase change film layer 40 through the voltage to adjust the light intensity of the reflected light. Therefore, normal picture display can be realized by regulating the light intensity of the reflected light and the red, green and blue color resist.

[0072] And since the phase change speed of the phase change film layer 40 involved in the present application is usually in the nanosecond level, the display device provided by the embodiment of the present application can be applied to higher refresh frequency picture display.

[0073] It should be noted that only the above structure is described in the above-mentioned display device embodiment, and it can be understood that, in addition to the above structure, any other necessary structure can be included in the display device of the embodiment of the present application as needed, which is not limited here.

[0074] The embodiment of the present application also provides a display device, which comprises the display device as claimed in any one of the above. As Figure 1 The display device provided by the embodiment of the present application is an embodiment structure schematic diagram of the display device. In Figure 1 The display device can comprise:

[0075] The light source module 10 in the embodiment of the present application is mainly used for emitting collimated incident light.

[0076] The transflector layer 20 is arranged at the side of the vertical line where the light source module is located, and the transflector layer and the light source film layer are located on the same horizontal line.

[0077] The transflector layer 20 in the embodiment of the present application is mainly used for transmitting part of the light and reflecting another part of the light; the transflector layer 20 is also used for receiving the incident light emitted by the light source module 10. And part of the light is reflected to the filter film layer 30.

[0078] The filter film layer 30 is arranged on the vertical line where the transflective film layer 20 is located, and the vertical line of the filter film layer 30 is 90° with the straight line of the incident light; and the intersection of the vertical line of the filter film layer 30 and the straight line of the incident light is on the transflective film layer 20.

[0079] The filter film layer 30 in the embodiment of the present application is used to receive the light reflected by the transflective film layer 20, and project the light of the preset wave band to the phase change film layer 40.

[0080] The phase change film layer 40 is arranged on the vertical line where the transflective film layer 20 is located, and the distance between the phase change film layer 40 and the transflective film layer 20 is greater than the distance between the filter film layer 30 and the transflective film layer 20.

[0081] The phase change film layer 40 in the embodiment of the present application is used to receive the light of the preset wave band, and reflect the light of the preset wave band after adjusting the light intensity to the transflective film layer 20.

[0082] The display layer 50 is arranged on the vertical line where the transflective film layer 20 is located, and the display layer 50 is used to receive the light of the preset wave band projected by the transflective film layer 20, and present the three primary color lights.

[0083] The display device provided by the embodiment of the present application adds a phase change film layer to replace the liquid crystal in the prior art, and sets a light source module, a transflective film layer, a filter film layer and a display layer; so that the light emitted by the light source module is reflected to the filter film layer and the phase change film layer after passing through the transflective film layer, and then is emitted to the display layer after being processed in the filter film layer and the phase change film layer, so that the picture can be displayed without liquid crystal, and through the foregoing design, the response speed of the display device is improved, so that the display device can realize high frequency refresh.

[0084] In the Figure 1 , the display layer 50 and the filter film layer 30 are arranged oppositely, and the phase change film layer 40 and the filter film layer 30 are arranged on the same side, that is, the display layer 50 and the phase change film layer 40 are also arranged oppositely; and the distance between the phase change film layer 40 and the filter film layer 30 is closer than the distance between the filter film layer 30 and the display layer 50.

[0085] Meanwhile, in the embodiment of the present application, the transflective film layer 20 is arranged between the phase change film layer 40 and the display layer 50. The light source module 10 is arranged on the side of the vertical line formed by the structure of the display layer 50-transflective film layer 20-filter film layer 30-phase change film layer 40, and is not arranged on the vertical line formed by the structure of the display layer 50-transflective film layer 20-filter film layer 30-phase change film layer 40. Meanwhile, the light source module 10 and the transflective film layer 20 are located at the same horizontal height; that is, the light source module 10 and the transflective film layer 20 are on the same horizontal line.

[0086] Please refer to Figure 1 , inFigure 1 In some embodiments, the light source module 10 can further include:

[0087] a light emitting unit 101, the light emitting unit 101 emits incident light.

[0088] a light collimation module 102, the light collimation module 102 is arranged on one side of the light emitting unit 101, receives the incident light emitted by the light emitting unit 101, and collimates the incident light before the light is incident on the transflector layer 20.

[0089] Specifically, the light source module 10 in the embodiments of the present application corresponds to a light emitting module in the prior display device, which emits light. The light source module 10 generally includes a light emitting unit 101 that actually emits light and a light collimation module 102 that processes the light.

[0090] Since the light emitted by the light emitting unit 101 is generally dispersed, the light collimation module 102 is needed to collimate the light emitted by the light emitting unit 101, so that the dispersed light becomes parallel collimated light. In some embodiments, the collimation module 102 can be a collimation lens.

[0091] The collimated light is emitted from the collimation module 102 and transmitted to the transflector layer 20. The transflector layer 20 is a semi-transmissive and semi-reflective film; that is, when the light passes through the transflector layer 20, half of the light directly passes through the transflector layer 20, and the other half of the light is reflected by the transflector layer 20.

[0092] Please refer to Figure 1 When the horizontal collimated light emitted by the light source module 10 reaches the transflector layer 20, half of the light directly passes through the transflector layer 20 and is emitted, and the other half of the light is reflected by the transflector layer 20. The part of the collimated light originally in the horizontal direction becomes vertical after being reflected.

[0093] The light that becomes vertical reaches the filter film layer 30 and the phase change film layer 40. In the embodiments of the present application, the filter film layer 30 and the phase change film layer 40 both process the light so that the processed light can reach the display layer 50 to realize picture display. The filter film layer 30 and the phase change film layer 40 are both multi-layer structures.

[0094] Specifically, in some embodiments of the present application, the filter film layer 30 can include at least two of a silver layer, a silicon dioxide layer, and a titanium dioxide layer. That is, in the multi-layer structure of the filter film layer 30, at least any two of a film layer made of silver, a film layer made of silicon dioxide, and a film layer made of titanium dioxide can be included.

[0095] It should be noted that the above embodiment only describes the materials of different film layers in the filter film layer 30, and does not mean that the filter film layer 30 only includes two film layers or three film layers. In some other embodiments, the number of film layers in the filter film layer 30 is greater than or equal to 3. Regardless of the number of film layers in the filter film layer 30, in general, the different film layers in the multi-layer structure are alternately arranged as silver layers, silicon dioxide layers, and titanium dioxide layers.

[0096] As shown in Figure 2 , it is an embodiment schematic diagram of the filter film layer structure provided in the embodiment of the present application. According to Figure 2 , it can be seen that the number of film layers in the filter film layer 30 is much greater than 3; at the same time, the different film layer structures in the filter film layer 30 are alternately arranged as silver layers, silicon dioxide layers, and titanium dioxide layers.

[0097] It should be noted that in the embodiment of the present application, the thickness of each film layer in the multi-layer structure of the filter film layer 30 is different; that is, the multi-layer structure in the filter film layer 30 is a film layer with adjustable thickness. For details, please refer to Figure 2 , in Figure 2 , a plurality of silver layers, silicon dioxide layers, and titanium dioxide layers are alternately arranged; and the film layer thicknesses corresponding to the plurality of silver layers, silicon dioxide layers, and titanium dioxide layers are all different.

[0098] At the same time, in the embodiment of the present application, the phase change film layer 40 is also a multi-layer structure, and the phase change film layer 40 also includes one or more of silver layers, silicon dioxide layers, and titanium dioxide layers. However, unlike the filter film layer 30, the phase change film layer 40 in the embodiment of the present application needs to include a film layer made of a phase change material; and the phase change film layer made of a phase change material switches between a crystalline state and an amorphous state under the control of voltage.

[0099] Among them, the phase change material (PCM-Phase Change Material) refers to a substance that changes physical properties with temperature and can provide latent heat. The process of changing the physical properties of the phase change material is called a phase change process.

[0100] In one specific embodiment, the phase change material can be antimony trisulfide (Sb2S3); the phase change film layer 40 needs to include a film layer formed of antimony trisulfide material. At this time, the phase change film layer 40 can only include any one of silver layers, silicon dioxide layers, and titanium dioxide layers.

[0101] As shown in Figure 3 , it is an embodiment schematic diagram of the reflectivity spectrum of the phase change material in the amorphous state provided in the embodiment of the present application; Figure 4 , it is an embodiment schematic diagram of the reflectivity spectrum of the phase change material in the crystalline state provided in the embodiment of the present application; Figure 5 , it is an embodiment schematic diagram of the transmittance spectrum of the filter film layer provided in the embodiment of the present application.Figure 3 , Figure 4 and Figure 5 The horizontal coordinate is wavelength, in nanometers (nm); and the horizontal coordinate is reflectivity.

[0102] As shown in Figure 3 and Figure 4 , when the phase change material layer in the phase change film layer 40 changes from amorphous state to crystal state, the blue light in the wavelength range of 465 nm to 470 nm will have a blue shift phenomenon. According to Figure 5 , it can be seen that the filter film layer 30 can only transmit the blue light in the wavelength range of 465 nm to 470 nm, and has a filtering effect on the wavelength.

[0103] Figure 6 The reflectivity spectrum of the filter film layer and the phase change film layer provided in the embodiment of the present application is shown in Figure 6 . In Figure 6 , the horizontal coordinate is wavelength, in nanometers (nm); and the horizontal coordinate is reflectivity. Figure 6 In Figure 6 , the reflectivity corresponding to the amorphous phase change material has a peak on the upper side, and the reflectivity corresponding to the crystal phase change material has a peak on the lower side. Figure 6 The light reflectivity spectrum of the combination of the filter film layer 30 and the phase change film layer 40 in different states is shown in

[0104] According to Figure 6 , the combination of the filter film layer 30 and the phase change film layer 40 in the embodiment of the present application can obtain a combination film layer of blue light in the wavelength range of 465 nm to 470 nm with adjustable intensity, and the light can be filtered by using the combination film layer.

[0105] As shown in Figure 7 , an embodiment of the structure of the phase change film layer provided in the embodiment of the present application is shown. In Figure 7 , the number of film layers in the phase change film layer 40 can also be greater than or equal to 3, and must include a film layer made of phase change material (Sb2S3).

[0106] The phase change film layer 40 typically consists of alternating layers of phase change material (Sb₂S₃), silver, silicon dioxide, and titanium dioxide. Similar to the filter film layer 30, each layer in the phase change film layer 40 has a different thickness; that is, all layers in the phase change film layer 40 have adjustable thickness. Even though the phase change film layer 40 includes multiple layers of phase change material (Sb₂S₃), silver, silicon dioxide, and titanium dioxide, the thicknesses of these layers are all different.

[0107] After being filtered by the filter layer 30 and the phase change film layer 40, the light continues to be sent to the transflective film layer 20. Similarly, part of the light passing through the transflective film layer 20 is reflected, while the other part passes through the transflective film layer 20 and is directed to the display layer 50.

[0108] Please refer to Figure 1 In the embodiments of this application, the display layer 50 may include a fluorescent layer 501 and a color resist layer 502; and the fluorescent layer 501 is disposed on the side close to the transflective film layer 20, and the color resist layer 502 is disposed on the side away from the transflective film layer 20.

[0109] Furthermore, in some embodiments, the fluorescent layer 501 can be a yellow fluorescent layer.

[0110] Please combine Figure 1 ,for Figure 1 In the display device shown, the white light emitted by the light-emitting unit 101 is collimated by the collimating lens 4. The collimated white light is partially reflected by the transflective film layer 20 to the filter film layer 30 and the phase change film layer 40. The white light is further filtered by the filter film layer 30 and the phase change film layer 40, and can reflect blue light of a specific wavelength. The reflected blue light is sent back to the transflective film layer 20, where some of the blue light passes directly through the transflective film layer 20 to reach the yellow phosphor layer 501 and then emits white light. The white light emitted by the yellow phosphor layer 501 then enters the red, green, and blue resist layers 502 respectively, presenting the three primary colors of red, green, and blue light.

[0111] Meanwhile, in the embodiments of this application, the grayscale of each pixel in the display layer is mainly adjusted by switching the phase change film layer 40 from an amorphous to a crystalline state using voltage to regulate the intensity of reflected light. Therefore, normal image display can be achieved by controlling the color resists (red, green, and blue) and the intensity of reflected light.

[0112] Furthermore, since the phase change film layer 40 involved in this application typically has a phase change speed in the nanosecond range, the display device provided in the embodiments of this application can be used for displaying images with higher refresh rates.

[0113] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the detailed description of other embodiments above, which will not be repeated here.

[0114] In the implementation, the above units or structures can be implemented as independent entities, or combined as the same or several entities, and the specific implementation of the above units or structures can be referred to the method embodiments above, which will not be repeated here.

[0115] The specific implementation of the above operations can be referred to the above embodiments, which will not be repeated here.

[0116] The above has introduced in detail the display device provided by the embodiments of the present application, and the principle and implementation manner of the present application are described by applying specific examples; the above embodiment is only used to help understand the method and core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description should not be understood as the limitation of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises: a light source module configured to emit collimated incident light; a transflective film layer located on a side of a vertical line where the light source module is located, and the transflective film layer is located on the same horizontal line as the light source module, and is configured to receive the incident light and reflect part of the incident light; a filter film layer located on a side of the transflective film layer, and configured to receive part of the incident light reflected by the transflective film layer, and transmit light of a preset waveband in the incident light; a phase change film layer located on a side of the filter film layer away from the transflective film layer, and configured to receive the light of the preset waveband and reflect the light of the preset waveband after adjusting the light intensity of the light of the preset waveband to the transflective film layer, so that the adjusted light of the preset waveband transmits through the transflective film layer; a display layer arranged on a side of the transflective film layer away from the filter film layer, the display layer receiving the light of the preset waveband transmitted from the transflective film layer, and presenting three primary color lights; wherein the display layer, the transflective film layer, the filter film layer and the phase change film layer are located on the same vertical line; the distance between the phase change film layer and the transflective film layer is greater than the distance between the filter film layer and the transflective film layer.

2. The display device according to claim 1, wherein The light source module comprises: a light emitting unit; a light collimation module arranged on a side of the light emitting unit, and the light collimation module is located on the same horizontal line as the light emitting unit.

3. The display device according to claim 1, wherein The transflective film layer is a semi-transmissive and semi-reflective film.

4. The display device according to claim 1, wherein The phase change film layer is a multi-film layer structure, and the phase change film layer comprises a film layer made of antimony trisulfide material.

5. The display device according to claim 4, wherein The phase change film layer switches between a crystalline state and an amorphous state under the control of voltage.

6. The display device according to claim 4, wherein The phase change film layer further comprises one or more of a silver layer, a silicon dioxide layer, and a titanium dioxide layer.

7. The display device according to claim 6, wherein The multiple film layers in the phase change film layer are all adjustable thickness film layers.

8. The display device according to claim 1, wherein The display layer comprises a fluorescent layer and a color resistance layer, the fluorescent layer is arranged on a side close to the transflective film layer, and the color resistance layer is arranged on a side away from the transflective film layer.

9. The display device according to claim 8, wherein The fluorescent layer is a yellow fluorescent layer.

10. The display device according to claim 1, wherein The filter film layer is a multi-film layer structure, and the filter film layer comprises at least two of a silver layer, a silicon dioxide layer, and a titanium dioxide layer.

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