Displays and display devices

Abstract

The present invention discloses a display screen and a display device, which relate to the field of display technology, wherein the display screen includes a substrate, a plurality of pixel display areas are formed on the substrate, each pixel display area has a first projection area and a second projection area, and the display screen also includes a dimming structure arranged in the pixel display area, the dimming structure includes a reflective film, a long afterglow photoluminescent layer, a light-shielding particle layer and a driving layer, the projection of the reflective film on the pixel display area falls into the first projection area, and the reflective film can reflect external light; at least part of the projection of the long afterglow photoluminescent layer in the pixel display area fills the second projection area; the light-shielding particle layer is arranged on the side of the reflective film away from the substrate and the side of the long afterglow photoluminescent layer away from the substrate; the driving layer is arranged between the long afterglow photoluminescent layer and the substrate, and the driving layer is used to drive a plurality of light-shielding particles in the light-shielding particle layer to gather and form a pattern that blocks light. The display screen provided by the present invention can improve the problem of high power consumption of the display screen.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display screen and a display device. Background Art

[0002] The traditional way to reduce the power consumption of display devices is to adjust the brightness of the light source by monitoring the ambient light, or to adjust the backlight brightness according to the content of the image. This method makes the energy saving effect not obvious and the power consumption is high. Summary of the invention

[0003] The main purpose of the present invention is to provide a display screen and a display device, aiming to improve the problem of high power consumption of traditional display screens.

[0004] To achieve the above-mentioned purpose, the display screen proposed in the present invention includes a substrate, a plurality of pixel display areas are formed on the substrate, each of the pixel display areas has a first projection area and a second projection area, the display screen also includes a dimming structure arranged in the pixel display area, the dimming structure includes a reflective film, a long afterglow photoluminescent layer, a shading particle layer and a driving layer, the projection of the reflective film on the pixel display area falls into the first projection area, and the reflective film can reflect external light; the long afterglow photoluminescent layer at least partially projects on the pixel display area to fill the second projection area; the shading particle layer is arranged on a side of the reflective film away from the substrate and a side of the long afterglow photoluminescent layer away from the substrate; the driving layer is arranged between the long afterglow photoluminescent layer and the substrate, and the driving layer is used to drive a plurality of shading particles in the shading particle layer to gather and form a pattern that blocks light.

[0005] In one embodiment, the long afterglow photoluminescent layer is disposed on a side of the reflective film close to the substrate.

[0006] In one embodiment, the projection of the long-lasting photoluminescent layer also fills the first projection area.

[0007] In one embodiment, the dimming structure further includes a transmissive film, which is disposed on a side of the long afterglow photoluminescent layer facing away from the substrate, and at least a portion of the projection of the transmissive film on the pixel display area falls into the second projection area.

[0008] In one embodiment, the transmissive film and the reflective film are disposed in the same layer, and the projection of the transmissive film on the pixel display area falls into the second projection area.

[0009] In one embodiment, the light-shielding particle layer includes a plurality of magnetic light-shielding particles, and the driving layer is an electromagnetic conversion layer.

[0010] In one embodiment, at least part of the first projection area surrounds at least part of the second projection area;

[0011] And / or, at least a portion of the second projection area surrounds at least a portion of the first projection area.

[0012] In one embodiment, the area of ​​the first projection area is greater than the area of ​​the second projection area.

[0013] In one embodiment, the display screen further comprises an insulating protective layer, wherein the insulating protective layer is disposed between the driving layer and the long afterglow photoluminescent layer;

[0014] And / or, the display screen further includes a light-transmitting encapsulation layer, and the light-transmitting encapsulation layer is arranged on a side of the reflective film away from the substrate.

[0015] The present invention also provides a display device, comprising the above display screen.

[0016] The technical solution of the present invention forms a first projection area and a second projection area in each pixel display area, and the projection of the reflective film of the dimming structure in the pixel display area falls into the first projection area, and the reflective film can reflect external light, so the external light can be reflected by the reflective film, thereby achieving the effect of making full use of the external ambient light to improve the display brightness. In addition, by projecting at least part of the long afterglow photoluminescent layer in the pixel display area to fill the second projection area, the external light can be irradiated to the position of the long afterglow photoluminescent layer corresponding to the second projection area, so that the position of the long afterglow photoluminescent layer corresponding to the second projection area can store light energy and convert from a stable state to an excited state to emit light, thereby providing light for the display screen of the present invention to emit light at night, thereby making full use of the natural light during the day and applying it to the night, so that the power consumption of the display screen can be reduced.

[0017] In addition, by arranging the light-shielding particle layer on the side of the reflective film away from the substrate and the side of the long-lasting photoluminescent layer away from the substrate, and the driving layer is arranged between the long-lasting photoluminescent layer and the substrate, the driving layer can drive the multiple light-shielding particles in the light-shielding particle layer to move in a specific direction according to the content of the display screen and enable the multiple light-shielding particles to block the pixel display area that needs to block light. For example, during the day, the driving layer of the pixel display area corresponding to the display content drives the corresponding multiple light-shielding particles in the light-shielding particle layer to block the second projection area and the first projection area corresponding to the pixel display area, thereby forming a black display content, while the pixel display areas corresponding to other areas keep the light-shielding particle layer not driven by the driving layer, so that the first projection area of ​​each pixel display area corresponding to other areas can reflect external light, and the long-lasting photoluminescent layer corresponding to the second projection area can store light energy and emit light, so that other areas are displayed as white during the day, and the white is the background color of the entire display screen. At night, the multiple shading particles in the shading particle layer of the driving layer corresponding to the pixel display area of ​​the area where no content is displayed can be gathered at the corresponding position of this area, so as to display black, which is the background color of the entire display screen; and the shading particles in the shading particle layer in the area corresponding to the area where content needs to be displayed are not driven by the driving layer, that is, they are in a dispersed state, which is conducive to the light energy stored in the long afterglow photoluminescent layer during the day to release the light and not be blocked by the shading particle layer, so as to achieve the effect of displaying white content at night, thereby making full use of the light energy stored during the day and reducing the power consumption of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A cross-sectional view of an example of a display screen provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of light in daytime of an example of a display screen provided in an embodiment of the present invention;

[0021] Figure 3 This is a diagram showing the display effect of an example of a display screen provided in an embodiment of the present invention during the day;

[0022] Figure 4 A schematic diagram of light at night of an example of a display screen provided in an embodiment of the present invention;

[0023] Figure 5 A diagram showing the display effect of an example of a display screen provided in an embodiment of the present invention at night;

[0024] Figure 6 A top view of an example of a display screen in Embodiment 1 provided by the present invention after the light-shielding particle layer is removed;

[0025] Figure 7 A top view of another example of the display screen of the first embodiment of the present invention after the light-shielding particle layer is removed;

[0026] Figure 8 A top view of another example of the display screen of the first embodiment of the present invention after the light-shielding particle layer is removed;

[0027] Fig. 9 A cross-sectional view of an example of a display device according to the second embodiment of the present invention.

[0028] Description of Figure Numbers:

[0029] 100, substrate; 101, pixel display area; 1011, first projection area; 1012, second projection area;

[0030] 200, dimming structure; 210, reflective film; 220, long afterglow photoluminescent layer; 230, light shielding particle layer; 240, driving layer; 250, transmissive film; 260, insulating protective layer; 270, light-transmitting encapsulation layer;

[0031] 300. Backlight module.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] The traditional way to reduce the power consumption of display devices is to adjust the brightness of the light source by monitoring the ambient light, or to adjust the backlight brightness according to the content of the image. This method makes the energy saving effect not obvious and the design is complex, often requiring high-cost design and instrument testing. For outdoor display screens, the cost is too high and the structure is complex.

[0037] Embodiment 1:

[0038] In order to improve the problem of high power consumption of a traditional display screen, the present invention provides a display screen.

[0039] Please refer to Figures 1 to 5 In one embodiment of the present invention, the display screen includes a substrate 100, a plurality of pixel display areas 101 are formed on the substrate 100, each pixel display area 101 has a first projection area 1011 and a second projection area 1012, the display screen also includes a dimming structure 200 disposed in the pixel display area 101, the dimming structure 200 includes a reflective film 210, a long afterglow photoluminescent layer 220, a light shielding particle layer 230 and a driving layer 240, the projection of the reflective film 210 on the pixel display area 101 falls into the first projection area 1 011, and the reflective film 210 can reflect external light; the long afterglow photoluminescent layer 220 is projected at least partially in the pixel display area 101 to fill the second projection area 1012; the light-shielding particle layer 230 is arranged on the side of the reflective film 210 away from the substrate 100 and the side of the long afterglow photoluminescent layer 220 away from the substrate 100; the driving layer 240 is arranged between the long afterglow photoluminescent layer 220 and the substrate 100, and the driving layer 240 is used to drive the multiple light-shielding particles in the light-shielding particle layer 230 to gather and form a pattern for blocking light.

[0040] A plurality of pixel display areas 101 are formed on the substrate 100, and the brightness of different pixel display areas 101 is controlled to achieve the effect that the display screen can display a specific picture. Each pixel display area 101 has a first projection area 1011, and the projection of the reflective film 210 on the pixel display area 101 falls into the first projection area 1011, and the reflective film 210 can reflect the external light, so that the position of the first projection area 1011 corresponding to the pixel display area 101 can display light with higher brightness. Each pixel display area 101 also has a second projection area 1012. It can be understood that the first projection area 1011 and the second projection area 1012 do not overlap, wherein the sum of the areas of the first projection area 1011 and the second projection area 1012 can be completely equal to the area of ​​a pixel display area 101, thereby improving the light utilization rate and increasing the viewing angle. Of course, in other examples, the sum of the areas of the first projection area 1011 and the second projection area 1012 can be less than the area of ​​a pixel display area 101. The shape of the first projection area 1011 can be rectangular, circular or other shapes, and the shape of the second projection area 1012 can also be rectangular, circular or other shapes. The area of ​​the first projection area 1011 and the area of ​​the second projection area 1012 can be the same or different. It can be understood that the area of ​​the first projection area 1011 and the area of ​​the second projection area 1012 can be adaptively adjusted according to the display brightness requirements of the display screen. The first projection area 1011 and the second projection area 1012 can be arranged side by side or nested with each other. The first projection area 1011 can be an integral area or can be formed by two or more separate sub-areas isolated from each other; similarly, the second projection area 1012 can be an integral area or can be formed by two or more separate sub-areas isolated from each other.

[0041] In addition, the dimming structure 200 further includes a long afterglow photoluminescent layer 220, which refers to a light-emitting layer that can receive and store external light during the day, and can be converted from a stable state to an excited state, and then release energy to emit light. Specifically, all projections of the long afterglow photoluminescent layer 220 in the pixel display area 101 fill the second projection area 1012, that is, the area of ​​the projection of the long afterglow photoluminescent layer 220 in the pixel display area 101 is equal to the area of ​​the second projection area 1012; or, part of the projection of the long afterglow photoluminescent layer 220 in the pixel display area 101 fills the second projection area 1012, and the other part of the projection can cover the first projection area 1011 or other areas, etc.

[0042] By projecting at least part of the long afterglow photoluminescent layer 220 on the pixel display area 101 to fill the second projection area 1012, the external light during the day can irradiate the area of ​​the long afterglow photoluminescent layer 220 that is not blocked by the light-shielding particles through the position corresponding to the second projection area 1012, thereby providing a luminous basis for nighttime illumination, reducing the need to turn on a high-power backlight source at night, thereby achieving an energy-saving effect and reducing the power consumption of the display screen.

[0043] In order to realize the effect of displaying images during the day and improving the contrast of the images, the dimming structure 200 in the present invention also includes a shading particle layer 230 and a driving layer 240. The driving layer 240 is used to drive the movement of the shading particles, so that a plurality of shading particles can be gathered to form a shading effect, so that the shading position is the position of the display image during the day, so as to form a sharp contrast with the light reflected by the reflective film 210 during the day, thereby improving the clarity and contrast of the display image. In addition, at night, when a plurality of shading particles gather to form a shading effect, the shading position can be used as the background color of the display image, so as to form a sharp contrast with the light emitted by the long afterglow photoluminescent layer 220. It should be noted that in order to realize the control of each pixel display area 101, the driving layer 240 in the dimming structure 200 corresponding to each pixel display area 101 is independent, so that the driving layer 240 in each dimming structure 200 can control the corresponding pixel display area 101 to be in a bright state or a dark state.

[0044] For example, during the day, according to the requirements of the display screen, some of the multiple different pixel display areas 101 need to be shielded by the shading structure to form a sharp contrast with the natural light during the day, then the driving layer 240 corresponding to these pixel display areas 101 drives the shading particles in the corresponding shading particle layer 230 to move and gather at the corresponding positions of these pixel display areas 101, so that the user can more intuitively watch the display content of the display screen. In other pixel display areas 101, it is not necessary to shield the screen by the shading structure, so all of these pixel display areas 101 are used to display the background color of the display screen, that is, to display the outer white color during the day, so the shading particles in the shading particle layer 230 corresponding to these pixel display areas 101 can be kept in a scattered state, so that the external light can irradiate the reflective film 210 and the long afterglow photoluminescent layer 220 corresponding to these pixel display areas 101, so that the first projection area 1011 and the second projection area 1012 of these pixel display areas 101 can emit white light. At night, the external environment is dark. According to the requirements of the display screen, some display contents that need to be highlighted need to be emitted through white light. Then, the driving layer 240 corresponding to the pixel display areas 101 corresponding to these display contents does not drive the light-shielding particles in the light-shielding particle layer 230 to move, so as to facilitate the light emitted by the long-lasting photoluminescent layer 220 to be emitted through the positions corresponding to these pixel display areas 101. Correspondingly, the driving layer 240 corresponding to the pixel display areas 101 that do not need to highlight the display contents can drive the light-shielding particles corresponding to the pixel display areas 101 that do not need to highlight the display contents to move and gather, thereby forming a black background.

[0045] It should be noted that the display position of the display screen that needs to be highlighted during the day can be the same as or different from the display position of the display screen that needs to be highlighted at night. When the display position of the display screen that needs to be highlighted during the day can be the same as the display position of the display screen that needs to be highlighted at night, it can be understood that in the entire display screen, part of the pixel display area 101 needs to display black, that is, the light-shielding particle layer 230 needs to shield the pixel display area 101 that needs to display black; while there is still a part of the pixel display area 101 that does not need to display black, so the long afterglow photoluminescent layer 220 corresponding to the position of these pixel display areas 101 that do not need to display black can store light energy during the day, thereby making the entire long afterglow photoluminescent layer 220 in an excited state and emit light, that is, because the position of the long afterglow photoluminescent layer 220 that is not shielded by the light-shielding particles during the day receives light, the entire long afterglow photoluminescent layer 220 can emit light for a longer time at night, that is, the position corresponding to the pixel display area 101 of the display screen during the day will also emit light, so that white content can be displayed at the same position at night.

[0046] The technical solution of the present invention forms a first projection area 1011 and a second projection area 1012 in each pixel display area 101, and the projection of the reflective film 210 of the dimming structure 200 in the pixel display area 101 falls into the first projection area 1011, and the reflective film 210 can reflect external light, so the external light can be reflected by the reflective film 210, thereby achieving the effect of making full use of the external ambient light to improve the display brightness. In addition, by projecting at least part of the long afterglow photoluminescent layer 220 in the pixel display area 101 to fill the second projection area 1012, the external light can be irradiated to the position of the long afterglow photoluminescent layer 220 corresponding to the second projection area 1012, so that the position of the long afterglow photoluminescent layer 220 corresponding to the second projection area 1012 can store light energy and convert from a stable state to an excited state to emit light, thereby providing light for the display screen of the present invention to emit light at night, thereby making full use of the natural light during the day and applying it to the night, so as to reduce the power consumption of the display screen.

[0047] In addition, by arranging the light-shielding particle layer 230 on the side of the reflective film 210 facing away from the substrate 100 and the side of the long afterglow photoluminescent layer 220 facing away from the substrate 100, and the driving layer 240 is arranged between the long afterglow photoluminescent layer 220 and the substrate 100, the driving layer 240 can drive the multiple light-shielding particles in the light-shielding particle layer 230 to move in a specific direction according to the content of the display image and enable the multiple light-shielding particles to block the pixel display area 101 that needs to block light. For example, during the day, the driving layer 240 of the pixel display area 101 corresponding to the display content drives the corresponding multiple light-shielding particles in the light-shielding particle layer 230 to block the second projection area 1012 and the first projection area 1011 corresponding to the pixel display area 101, thereby forming a black display content, while the pixel display areas 101 corresponding to other areas keep the light-shielding particle layer 230 not driven by the driving layer 240, so that the first projection area 1011 of the pixel display areas 101 corresponding to other areas can reflect external light, and the long afterglow photoluminescent layer 220 corresponding to the second projection area 1012 can store light energy and emit light, so that other areas appear white during the day, and the white is the background color of the entire display screen. At night, the driving layer 240 corresponding to the pixel display area 101 in the area where no content is displayed can, in turn, drive the multiple shading particles in the shading particle layer 230 to gather at the corresponding position of this area, thereby displaying black, which is the background color of the entire display screen; and the shading particles in the shading particle layer 230 in the area corresponding to the area where content needs to be displayed are not driven by the driving layer 240, that is, they are in a dispersed state, which is conducive to the light energy stored in the long afterglow photoluminescent layer 220 during the day to release light and not be blocked by the shading particle layer 230, so as to achieve the effect of displaying white content at night, thereby making full use of the light energy stored during the day and reducing the power consumption of the display screen.

[0048] Please refer to Figure 1 , Figure 2 as well as Figure 4 In one example of the present invention, the long afterglow photoluminescent layer 220 is disposed on a side of the reflective film 210 close to the substrate 100 .

[0049] By arranging the long afterglow photoluminescent layer 220 on the side of the reflective film 210 close to the substrate 100, it can be ensured that the long afterglow photoluminescent layer 220 does not affect the reflective film 210 to absorb and reflect external light, thereby ensuring that the reflective film 210 can reflect enough light during the day to enhance the contrast between the background color of the display screen and the displayed content, while also reducing the power consumption of the light source of the backlight module 300.

[0050] Please refer to Figure 1 , Figure 2 as well as Figure 4 Furthermore, the projection of the long afterglow photoluminescent layer 220 also fills the first projection area 1011 .

[0051] By allowing the projection of the long afterglow photoluminescent layer 220 to fill the first projection area 1011 , the process of opening holes in the long afterglow photoluminescent layer corresponding to the first projection area 1011 can be reduced, thereby making the manufacturing process of the long afterglow photoluminescent layer 220 simpler.

[0052] In addition, with such a configuration, the long afterglow photoluminescent layer 220 is an integral layer structure. Therefore, when at least a portion of the long afterglow photoluminescent layer 220 can receive light, the entire long afterglow photoluminescent layer 220 can be excited to be in an excited state to emit light, thereby ensuring that the area blocked by the shading particle layer 230 during the day can also emit light at night.

[0053] Please refer to Figure 1 , Figure 2 as well as Figure 4 Furthermore, the dimming structure 200 also includes a transmissive film 250 , which is disposed on a side of the long afterglow photoluminescent layer 220 away from the substrate 100 , and at least a portion of the projection of the transmissive film 250 on the pixel display area 101 falls into the second projection area 1012 .

[0054] By further disposing a transmissive film 250 on the side of the long afterglow photoluminescent layer 220 facing away from the substrate 100, at least a portion of the projection of the transmissive film 250 on the pixel display area 101 falls within the second projection area 1012, thereby ensuring that light can pass through the transmissive film 250 before being emitted to the long afterglow photoluminescent layer 220, and ensuring that the transmissive film 250 has a good protective effect on the long afterglow photoluminescent layer 220.

[0055] Specifically, the projection of the transparent film 250 on the substrate 100 may overlap with the projection of the long afterglow photoluminescent layer 220, or the projection area of ​​the transparent film 250 on the substrate 100 may be larger than the projection area of ​​the long afterglow photoluminescent layer 220. The projection of the transparent film 250 on the substrate 100 may completely fall within the second projection area 1012, or a portion of the projection of the transparent film 250 on the substrate 100 may fall within the second projection area 1012 and a portion of the projection may fall within the first projection area 1011.

[0056] Please refer to Figure 1 , Figure 2 as well as Figure 4 In one example, the transmissive film 250 and the reflective film 210 are disposed in the same layer, and the projection of the transmissive film 250 on the pixel display area 101 falls into the second projection area 1012 .

[0057] By arranging the transmissive film 250 and the reflective film 210 in the same layer, the long afterglow luminescent layer is arranged on the side of the transmissive film 250 facing the substrate 100 and the side of the reflective film 210 facing the substrate 100, thereby reducing the stacking of the three-layer structure of the transmissive film 250, the reflective film 210 and the long afterglow photoluminescent layer 220, thereby achieving the effect of reducing the thickness of the display screen. In addition, it can be understood that in order to avoid the light from irradiating the position of the long afterglow photoluminescent layer 220 corresponding to the second projection area 1012, the reflective film 210 is provided with a hole structure, and these hole structures correspond to the second projection area 1012. By arranging the transmissive film 250 and the reflective film 210 in the same layer, and the projection of the transmissive film 250 on the pixel display area 101 falls into the second projection area 1012, the transmissive film 250 can fill the hole structure on the reflective film 210, thereby providing a support basis for the coating of the film layer on the side of the reflective film 210 away from the substrate 100.

[0058] Please refer to Figure 1 , Figure 2 as well as Figure 4 In one example of the present invention, the light-shielding particle layer 230 includes a plurality of magnetic light-shielding particles, and the driving layer 240 is an electromagnetic conversion layer.

[0059] By making the light-shielding particle layer 230 include a plurality of magnetic light-shielding particles and setting the driving layer 240 as an electromagnetic conversion layer, it is convenient to isolate the driving layer 240 from the light-shielding particle layer 230, that is, to set the driving layer 240 on the side of the reflective film 210 and the long afterglow photoluminescent layer 220 facing the substrate 100, thereby reducing the risk of the driving layer 240 blocking light. Specifically, when the driving layer 240 is powered on, the driving layer 240 has magnetism, thereby attracting the plurality of magnetic light-shielding particles in the light-shielding ion layer to move, and driving the plurality of magnetic light-shielding particles to block the second projection areas 1012 in a plurality of pixel display areas 101 during the day, thereby forming a dark state pattern; and driving the plurality of magnetic light-shielding particles to block the second projection areas 1012 in a plurality of pixel display areas 101 at night, thereby forming a dark state background.

[0060] Of course, in other examples, the light-shielding particle layer 230 may also include a plurality of charged light-shielding particles, and the driving layer 240 is an electrode layer. By passing an electric field opposite to that of the charged light-shielding particles into the electrode layer, the electrode layer can drive the light-shielding particles to move toward the substrate 100, and drive the plurality of charged light-shielding particles to shield the second projection areas 1012 in a plurality of pixel display areas 101 during the day, thereby forming a dark state pattern; and drive the plurality of charged light-shielding particles to shield the second projection areas 1012 in a plurality of pixel display areas 101 at night, thereby forming a dark state background.

[0061] Please refer to Figure 1 , Figure 2 , Figure 4 as well as Figure 5 In an example of the present invention, the first projection area 1011 and the second projection area 1012 are arranged alternately, that is, the reflective film 210 and the transmissive film 250 are arranged alternately. This arrangement makes the arrangement of the reflective film 210 and the transmissive film 250 simpler.

[0062] like Figure 7 As shown, in an example of the present invention, at least a portion of the first projection area 1011 surrounds at least a portion of the second projection area 1012 ; and / or, at least a portion of the second projection area 1012 surrounds at least a portion of the first projection area 1011 .

[0063] At least a portion of the first projection area 1011 may be annular or rectangular, etc. Specifically, the first projection area 1011 may include only one annular or rectangular shape, etc., or may include at least two annular structures, and the shapes of the at least two annular structures may be the same or different. At least a portion of the second projection area 1012 may also be annular or rectangular, etc. Specifically, the first projection area 1011 may include only one annular or rectangular shape, etc., or may include at least two annular structures, and the shapes of the at least two annular structures may be the same or different.

[0064] Specifically, the entire first projection area 1011 surrounds the outside of the second projection area 1012; or the entire second projection area 1012 surrounds the outside of the first projection area 1011; or, the second projection area 1012 surrounds a portion of the first projection area 1011, and another portion of the first projection area 1011 surrounds the outside of the second projection area 1012; or, the first projection area 1011 surrounds a portion of the second projection area 1012, and another portion of the second projection area 1012 surrounds the outside of the first projection area 1011. Such an arrangement makes the light more uniform and soft.

[0065] like Figure 8 As shown, in one example of the present invention, the area of ​​the first projection area 1011 is greater than the area of ​​the second projection area 1012 .

[0066] By setting the area of ​​the first projection area 1011 to be larger than the area of ​​the second projection area 1012, more white light is reflected during the day, thereby highlighting the dark pattern formed by the shading particles; and at night, the dark background can be made more obvious, thereby highlighting the pattern formed by the light emitted by the long afterglow photoluminescent layer 220, thereby enhancing the contrast between the pattern and the background color.

[0067] Please refer to Figure 1 , Figure 2 as well as Figure 4 In an example of the present invention, the display screen further includes an insulating protection layer 260 , and the insulating protection layer 260 is disposed between the driving layer 240 and the long afterglow photoluminescent layer 220 .

[0068] By disposing the insulating protection layer 260 between the driving layer 240 and the long afterglow photoluminescent layer 220 , the driving layer 240 can be well protected, thereby reducing the risk of short circuit between the driving layer 240 and other layer structures.

[0069] Please refer to Figure 1 , Figure 2 as well as Figure 4In an example of the present invention, the display screen further includes a light-transmitting encapsulation layer 270 , and the light-transmitting encapsulation layer 270 is disposed on a side of the reflective film 210 facing away from the substrate 100 .

[0070] By further providing a light-transmitting encapsulation layer 270 on the side of the reflective film 210 facing away from the substrate 100, on the one hand, the light-transmitting encapsulation layer 270 can be used as an encapsulation base for encapsulating the light-shielding particle layer 230, and provide good protection for the reflective film 210; on the other hand, it can also allow light to pass through, thereby avoiding the risk of blocking the light. Specifically, the light-transmitting encapsulation layer 270 can be an encapsulation layer of a transparent material, or an encapsulation layer of a translucent material, etc., as long as the light-transmitting effect can be achieved. It can be understood that when the light-transmitting encapsulation layer 270 is an encapsulation layer of a transparent material, the light output brightness of the display screen is better.

[0071] Embodiment 2:

[0072] The present invention also provides a display device, such as Fig. 9 As shown, the display device includes a display screen, and the specific structure of the display screen refers to the above-mentioned embodiment. Since the display device adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0073] like Fig. 9 As shown, the display device may further include a backlight module 300 , which is disposed on a side of the substrate 100 away from the reflective film 210 , thereby providing an auxiliary effect for improving the light output brightness of the display screen.

[0074] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A display screen, comprising a substrate, on which a plurality of pixel display areas are formed, characterized in that: Each of the pixel display areas has a first projection area and a second projection area, and the display screen further includes a dimming structure disposed in the pixel display area, and the dimming structure includes: a reflective film, wherein the projection of the reflective film on the pixel display area falls into the first projection area, and the reflective film is capable of reflecting external light; A long afterglow photoluminescent layer, wherein at least a portion of the projection of the long afterglow photoluminescent layer in the pixel display area fills the second projection area; a light-shielding particle layer, the light-shielding particle layer being disposed on a side of the reflective film away from the substrate and a side of the long afterglow photoluminescent layer away from the substrate; and A driving layer, the driving layer is disposed between the long afterglow photoluminescent layer and the substrate, and the driving layer is used to drive a plurality of light-shielding particles in the light-shielding particle layer to gather and form a pattern for shielding light; During the day, the driving layer drives the plurality of light-shielding particles to shield the pixel display area corresponding to the display content, so as to form a black display content; while the reflective film corresponding to the first projection area of ​​the other unshielded pixel display areas reflects external light, and the long afterglow photoluminescent layer corresponding to the second projection area stores light energy and emits light, forming a white background; At night, the driving layer drives the multiple shading particles to block the pixel display area corresponding to the non-display content, forming a black background; the pixel display area that needs to display content is not blocked by the shading particles, and the corresponding long afterglow photoluminescent layer utilizes the light energy stored during the day to emit light, forming white display content.

2. The display screen according to claim 1, characterized in that: The long afterglow photoluminescent layer is arranged on a side of the reflective film close to the substrate.

3. The display screen according to claim 2, characterized in that: The projection of the long-lasting photoluminescent layer also fills the first projection area.

4. The display screen according to claim 1, characterized in that: The dimming structure further includes a transmissive film, which is disposed on a side of the long afterglow photoluminescent layer away from the substrate, and at least a portion of the projection of the transmissive film on the pixel display area falls into the second projection area.

5. The display screen according to claim 4, characterized in that: The transmission film and the reflection film are arranged in the same layer, and the projection of the transmission film on the pixel display area falls into the second projection area.

6. The display screen according to claim 5, characterized in that: The light-shielding particle layer includes a plurality of magnetic light-shielding particles, and the driving layer is an electromagnetic conversion layer.

7. The display screen according to claim 1, characterized in that: At least part of the first projection area surrounds at least part of the second projection area; And / or, at least a portion of the second projection area surrounds at least a portion of the first projection area.

8. The display screen according to claim 1, characterized in that: The area of ​​the first projection area is greater than the area of ​​the second projection area.

9. The display screen according to any one of claims 1 to 8, characterized in that: The display screen further comprises an insulating protective layer, wherein the insulating protective layer is arranged between the driving layer and the long afterglow photoluminescent layer; And / or, the display screen further includes a light-transmitting encapsulation layer, and the light-transmitting encapsulation layer is arranged on a side of the reflective film away from the substrate.

10. A display device, characterized in that: Comprising a display screen as claimed in any one of claims 1 to 9.

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