Display panel and display device

Abstract

The present invention discloses a display panel and a display device, wherein the display panel includes: N transparent display substrates and a position adjustment mechanism; N transparent display substrates are stacked, each transparent display substrate includes a plurality of sub-pixel areas, and the sub-pixel areas between any two transparent display substrates correspond to each other; the sub-pixel area includes a light-emitting area and a transparent area; N is a positive integer greater than or equal to 2; the position adjustment mechanism is connected to at least N-1 transparent display substrates, and the position adjustment mechanism is used to adjust the relative position of the N transparent display substrates when stacked, so as to change the overlap area of ​​the orthographic projection of each transparent area of ​​the N transparent display substrates on the target plane; the overlap area is positively correlated with the transmittance of the display panel. The present invention can realize the adjustable transmittance of the transparent type display panel, and the entire implementation process does not need to use a liquid crystal layer with variable transmittance, thereby avoiding the generation of a large transmittance loss and ensuring a large adjustable transmittance range.

Description

Technical Field

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

[0002] A transparent display refers to a display that has a certain degree of light transmittance, so that the viewer can see the background on the back of the display while watching the display screen. Therefore, transparent displays can be widely used in exhibitions, building windows, shopping mall windows, etc. However, in some application scenarios, the transmittance of the transparent display needs to be adjusted. For example, if some viewers need a better viewing effect, the transmittance of the transparent display needs to be reduced; in some exhibition occasions or occasions where a higher transmittance is required, the transmittance of the transparent display needs to be increased. However, the transmittance adjustment of the current transparent display panel is mostly achieved by attaching a liquid crystal film that can adjust the transmittance on the back of the transparent panel. This method of attaching the liquid crystal film will suffer from the loss of transparency due to the polarizers attached before and after the liquid crystal, resulting in a reduction in the transmittance adjustment range of the transparent display. Summary of the invention

[0003] In view of the above problems, the present invention proposes a display panel and a display device, which do not need to use a liquid crystal layer with variable transmittance when realizing adjustable transmittance of the display panel, thereby avoiding a large transmittance loss and ensuring a larger transmittance adjustable range.

[0004] In the first aspect, the present application provides the following technical solution through an embodiment:

[0005] A display panel comprises: N transparent display substrates and a position adjustment mechanism;

[0006] The N transparent display substrates are stacked, each of the transparent display substrates includes a plurality of sub-pixel areas, and the sub-pixel areas between any two of the transparent display substrates correspond to each other; the sub-pixel area includes a light-emitting area and a transparent area; N is a positive integer greater than or equal to 2; a position adjustment mechanism is connected to at least N-1 of the transparent display substrates, and the position adjustment mechanism is used to adjust the relative positions of the N transparent display substrates when stacked, so as to change the overlapping area of ​​the orthographic projections of the transparent areas of the N transparent display substrates on the target plane; wherein the overlapping area is positively correlated with the transmittance of the display panel, and the target plane is a plane parallel to any of the transparent display substrates.

[0007] Optionally, the sum of the widths of the N light-emitting areas along the adjustment direction is greater than or equal to the width of the sub-pixel area along the adjustment direction; wherein the N light-emitting areas are a group of light-emitting areas that match each other in the N transparent display substrates.

[0008] Optionally, the sub-pixel areas of the N transparent display substrates are the same in size.

[0009] Optionally, when the light-emitting area in the sub-pixel area accounts for more than 50%, N is 2.

[0010] Optionally, when the area of ​​the light-emitting area in the sub-pixel area accounts for 33% to 50%, the value of N is 3.

[0011] Optionally, when the area of ​​the light-emitting area in the sub-pixel area accounts for 25% to 33%, the value of N is 4.

[0012] Optionally, the position adjustment mechanism includes: a first adjustment block and a second adjustment block, the first ends of the N transparent display substrates are all rotatably connected to the same side of the first adjustment block, the second ends of the N transparent display substrates are all rotatably connected to the same side of the second adjustment block, and the first end and the second end of the display substrate are opposite ends; wherein, the angles of the side of the first adjustment block and the side of the second adjustment block relative to the transparent display substrate are changed to adjust the orthographic projection positions of the N transparent display substrates on the target plane.

[0013] Optionally, the position adjustment mechanism includes: N first micromotors and N second micromotors, and the N transparent display substrates, the N first micromotors and the N second micromotors are in one-to-one correspondence;

[0014] For any of the transparent display substrates, the first end of the transparent display substrate is connected to the first micromotor, and the second end of the transparent display substrate is connected to the second micromotor; the first end and the second end of the transparent display substrate are opposite ends; the first micromotor and the second micromotor are used to control the orthographic projection position of the transparent display substrate on the target plane.

[0015] Optionally, an adjustment distance of the transparent display substrate by the position adjustment mechanism is not greater than a width of the light emitting area along an adjustment direction.

[0016] In the second aspect, based on the same inventive concept, the present application provides the following technical solution through an embodiment:

[0017] A display device comprises: a display panel as described in any one of the first embodiments above.

[0018] In an embodiment of the present invention, a display panel and a display device are provided, which change the transmittance based on the relative position change of N transparent display substrates stacked. Each transparent display substrate includes a plurality of sub-pixel areas, and the sub-pixel areas between any two transparent display substrates correspond to each other; the sub-pixel area includes a light-emitting area and a transparent area; N is a positive integer greater than or equal to 2. Furthermore, the position adjustment mechanism is connected to at least N-1 transparent display substrates. Therefore, the relative position change of the stacked N transparent display substrates can be achieved based on the position adjustment mechanism, thereby changing the overlapping area of ​​the orthographic projection of each transparent area of ​​the N transparent display substrates on the target plane, and the overlapping area is positively correlated with the transmittance of the display panel. Therefore, the transmittance of the display panel is finally adjusted, and the entire implementation process does not require the use of a liquid crystal layer with variable transmittance, thereby avoiding the generation of a large transmittance loss and ensuring a larger adjustable range of transmittance.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 and Figure 2 A schematic diagram of the structure of a transparent display substrate provided in an embodiment of the present invention in different transmittance states;

[0022] Figure 3 A schematic diagram of the structure of a display panel provided in an embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the structure of a sub-pixel region in an embodiment of the present invention;

[0024] Figure 5 Schematic diagram of the projection structure of the light transmission area when the maximum transmittance of the display panel is displayed in an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the projection structure of the light-transmitting area of ​​the display panel after the transmittance is reduced in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of a first connection structure between a display panel and a position adjustment mechanism in an embodiment of the present invention;

[0027] Figure 8 Schematic diagram of a second connection structure between a display panel and a position adjustment mechanism in an embodiment of the present invention;

[0028] Fig. 9 A schematic diagram of a third connection structure between a display panel and a position adjustment mechanism in an embodiment of the present invention;

[0029] Fig.10 Schematic diagram of a fourth connection structure between a display panel and a position adjustment mechanism in an embodiment of the present invention;

[0030] Fig.11 Schematic diagram of the size relationship between the sub-pixel area, the light-transmitting area and the light-emitting area in an embodiment of the present invention;

[0031] Fig.12 and Fig.13 Schematic diagram of the structure of a display panel when N is 2 in an embodiment of the present invention;

[0032] Fig.14 and Fig.15 Schematic diagram of the display panel structure when N is 3 in an embodiment of the present invention. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0034] Various structural schematic diagrams according to embodiments of the present disclosure are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may further design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0035] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, the layer / element may be directly on the other layer / element or an intervening layer / element may exist therebetween. In addition, if a layer / element is "on" another layer / element in one orientation, the layer / element may be "below" the other layer / element when the orientation is reversed.

[0036] See also Figure 1 and Figure 2In some implementations, the transparent display panel 10 has a transparent area 11 and a light-emitting area 12. By attaching a liquid crystal film 20 with adjustable transmittance to the back of the transparent display panel 10, the transmittance of the transparent area 11 is controlled by the liquid crystal film 20, so as to adjust the transmittance of the entire transparent display panel 10. Figure 1 shows a schematic structural diagram of the transparent display panel 10 in a transparent state, Figure 2 FIG. 1 is a schematic diagram showing the structure of the transparent display panel 10 in a non-transparent state. However, this implementation will suffer from a large transparency loss due to the polarizers attached to the front and back of the liquid crystal, that is, the maximum transmittance of the transparent display panel 10 will be reduced.

[0037] In this regard, the present application provides a display panel, in which a plurality of transparent display substrates are stacked and arranged, and a position adjustment mechanism is used to adjust the relative positions of the plurality of transparent display substrates, thereby changing the transmittance of the entire display panel, and does not use a solution of attaching a liquid crystal film with adjustable transmittance, which effectively improves the transparency loss problem of the display panel and increases the adjustable range of transmittance. The specific implementation details of the display panel of the present invention are described below through specific embodiments.

[0038] See also Figure 3 In one embodiment of the present invention, a display panel 100 is provided, which includes: N transparent display substrates 110 and a position adjustment mechanism 120, where N is a positive integer greater than or equal to 2. For example, the value of N can be 2, 3, 4, 5, 6, and so on.

[0039] N transparent display substrates 110 are stacked. Figure 3 , a first transparent display substrate 110 (1) and an Nth transparent display substrate 110 (N) are shown. It can be understood that the second transparent display substrate 110 is overlapped on the light-emitting surface of the first transparent display substrate 110 (1). If N is greater than 3, the third transparent display substrate 110 is overlapped on the light-emitting surface of the second transparent display substrate 110, and so on. The size of each transparent display substrate 110 can be the same to ensure that the N transparent display substrates 110 can be neatly stacked. The specification parameters of each transparent display substrate 110 should also be the same or similar. When the same, it can be understood that the sub-pixel arrangement of each transparent display substrate 110 is the same, the sub-pixel aperture ratio is the same, and the gap between sub-pixels is the same; that is, the orthographic projection of each transparent display substrate 110 on the target plane completely overlaps; the target plane is a plane parallel to any transparent display substrate 110. When similar, it can be understood that the sub-pixels in each transparent display substrate 110 should match each other.

[0040] In a similar situation, for a target sub-pixel of the first transparent display substrate 110 (1), any of the other N-1 transparent display substrates 110 has a sub-pixel that matches the target sub-pixel; the target sub-pixel and the sub-pixel that matches it may have similar occupied areas, similar aperture ratios, different shapes, etc.

[0041] For example, the area size difference between the target sub-pixel and the sub-pixel that matches it can be within the range of 50%. In the case of different areas, different transparent display substrates 110 can be combined and configured more flexibly to obtain display panels 100 with different display effects. If the area of ​​the sub-pixel that matches the target sub-pixel is smaller than the area of ​​the target sub-pixel, since the overlap area of ​​the sub-pixel's orthographic projection on the target plane is smaller, the maximum transmittance of the display panel 100 may be increased, and the transmittance adjustment range may be increased; if the area of ​​the sub-pixel that matches the target sub-pixel is equal to the area of ​​the target sub-pixel, a better display effect can be guaranteed. For another example, the shape of the target sub-pixel can be circular, and the shape of the sub-pixel that matches it can be square or bar, without limitation.

[0042] The transparent display substrate 110 may be an OLED (Organic Light-Emitting Diode) type transparent display substrate 110, or an LCD (Liquid Crystal Display) type transparent display substrate 110. In this embodiment, an OLED type transparent display substrate 110 may be used, thereby effectively improving the transmittance of the display panel 100. The transparent display substrate 110 may include: a TFT (Thin Film Transistor) array substrate and a color film substrate, wherein the array substrate and the color film substrate may be implemented according to the transparent display panel in the prior art, and will not be described in detail here.

[0043] See also Figure 3 and Figure 4 Specifically, each transparent display substrate 110 may include a plurality of sub-pixel regions 1, and the sub-pixel region 1 includes a light-emitting region 101 and a transparent region 102. The light-emitting region 101 may be the region where the sub-pixel is located, and the transparent region 102 may be the interval between two adjacent sub-pixels. The sub-pixel regions 1 between any two transparent display substrates 110 correspond to each other. It can be understood that for a certain target sub-pixel region of the first transparent display substrate 110 (1), any of the other N-1 transparent display substrates 110 has a sub-pixel region 1 that matches the target sub-pixel region, and the orthographic projection of the target sub-pixel region and the sub-pixel region 1 that matches it on the target plane also overlaps or partially overlaps.

[0044] For example, when the specification parameters of N transparent display substrates 110 are the same, the orthographic projections of the target sub-pixel region and its matching sub-pixel region 1 on the target plane can completely overlap, and the transparent regions 102 and display regions thereof overlap; Figure 1 As shown, the sub-pixel area A1 matches the sub-pixel area An, and the orthographic projections of the two on the target plane completely overlap. When the specification parameters of the N transparent display substrates 110 are different, the orthographic projections of the target sub-pixel area and the sub-pixel area 1 that matches it on the target plane should partially overlap, and the transparent area 102 therein should partially overlap, and the display area should also partially overlap.

[0045] In some implementations, when N transparent display substrates 110 are stacked, a gap may be reserved between any two adjacent transparent display substrates 110. Since the N transparent display substrates 110 are stacked, the translation between the transparent display substrates 110 is involved when adjusting the transmittance of the entire display panel 100; therefore, the design of the reserved gap can avoid friction between the two transparent display substrates 110, which may cause the transparent display substrate 110 to be defective. Furthermore, the reserved gap may be filled with a transparent liquid material, or a transparent flexible material, etc. The refractive index of the filling material should be similar to or the same as the refractive index of the contact surface material of the two adjacent transparent display substrates 110, so as to avoid total reflection.

[0046] It should be noted that the structural positions of the N transparent display substrates 110 described above are based on the maximum light transmittance of the display panel 100 .

[0047] The position adjustment mechanism 120 is connected to at least N-1 transparent display substrates 110. The position adjustment mechanism 120 is used to adjust the relative positions of the N transparent display substrates 110 when stacked, so as to change the overlap area of ​​the orthographic projections of the transparent areas 102 of the N transparent display substrates 110 on the target plane; wherein the overlap area is positively correlated with the transmittance of the display panel 100, and the target plane is a plane parallel to any transparent display substrate 110. For the convenience of description, the overlap area of ​​the orthographic projections of the transparent areas 102 on the target plane is referred to as the transparent area overlap area.

[0048] It can be understood that when the position adjustment mechanism 120 adjusts any transparent display substrate 110, the transparent display substrate 110 can be translated along the plane of its light-emitting surface, thereby changing the orthographic projection position of its transparent area 102 in the target plane, thereby achieving adjustment of the overlap area. Figure 5 and Figure 6 , Figure 5 is the maximum transmittance state of the display panel 100, Figure 6In order to reduce the state of the transmittance of the display panel 100, the overlapping area of ​​the transparent areas is reduced from S1 to S2. That is to say, when the overlapping area of ​​the transparent areas is the largest, the transmittance of the display panel 100 reaches the maximum, and when the overlapping area of ​​the transparent areas is the smallest, the transmittance of the display panel 100 reaches the minimum. The implementation method of the position adjustment mechanism 120 is not limited, and the transparent display substrate 110 can be moved horizontally along its light emitting surface. In this embodiment, the following two implementation methods are given, but are not limited thereto.

[0049] Please continue reading Figure 5 and Figure 6 The position adjustment mechanism may include a first position adjustment mechanism and a second position adjustment mechanism. Specifically, the first ends of the N transparent display substrates 110 are all rotatably connected to the same side of the first position adjustment mechanism 121, and the second ends of the N transparent display substrates 110 are all rotatably connected to the same side of the second position adjustment mechanism 122, and the first end and the second end of the transparent display substrate 110 are opposite ends.

[0050] The position adjustment mechanism 120 can be implemented based on the adjustment block, and the relative positions between the N transparent display substrates 110 are changed by adjusting the tilt angle of the adjustment block. Specifically, the position adjustment mechanism 120 may include: a first adjustment block 1211 and a second adjustment block 1221, the first ends of the N transparent display substrates 110 are all rotatably connected to the same side of the first adjustment block 1211, and the second ends of the N transparent display substrates 110 are all rotatably connected to the same side of the second adjustment block 1221, wherein the angle (β) of the side of the first adjustment block 1211 and the side of the second adjustment block 1221 relative to the transparent display substrate 110 is changed to adjust the orthographic projection position of the N transparent display substrates 110 on the target plane.

[0051] In some embodiments, if the connection distances between each transparent display substrate 110 and the first adjustment block 1211 or the second adjustment block 1221 are the same, the size of the tilt angle is positively related to the transmittance of the display panel 100, and when the tilt angle is 90°, the overlap area of ​​the transparent area reaches the maximum, and the transmittance of the display panel 100 reaches the maximum. This implementation method can map the tilt angle to the transmittance, and the control effect of controlling the transmittance of the display panel 100 can be achieved by controlling the tilt angle.

[0052] It can be understood that the first adjustment block 1211 and the second adjustment block 1221 can both be strip structures or plate structures without limitation. When N transparent display substrates 110 are connected to the first adjustment block 1211, one or more connectors 123 can be provided for the edge of any transparent display substrate 110 close to the first adjustment block 1211. The connector 123 can be a rigid connector 123, such as a protruding structure on the transparent display substrate 110, a connecting strip fixedly provided on the side of the transparent display substrate 110, etc.; it can also be a flexible connector 123, such as a connecting wire, a flexible connecting strip, etc.

[0053] If the connecting member 123 is a rigid connecting member 123, a first hinge structure may be provided on the connecting member 123; and a second hinge structure compatible with the first hinge structure may be provided on the first adjustment block 1211. In addition, the rotational connection between the transparent display substrate 110 and the first adjustment block 1211 may also be achieved through other rotation structures. Similarly, the connection method between the second adjustment block 1221 and the transparent display substrate 110 may refer to the connection method between the first adjustment block 1211 and the transparent substrate, and matching hinge structures are provided between the second adjustment block 1221 and the transparent display substrate 110, which will not be described in detail here. For the same transparent display substrate 110, the number of connecting members 123 may be one or more; in the present embodiment, it may be more than two to avoid rotation or displacement during adjustment.

[0054] Furthermore, the first hinge structure and the second hinge structure may both be multiple, and the distance between two adjacent first hinge structures is the first spacing, and the distance between two adjacent second hinge structures is the second spacing. The first spacings may be the same or different; the second spacings may be the same or different. The sum of all the first spacings and the sum of all the second spacings may be the same. Of course, in some implementations, the sum of all the first spacings may be less than the sum of all the second spacings, so that the first adjustment block 1211 can be designed to be smaller, thereby saving layout space, such as Figure 7 Similarly, the positional relationship between the second adjustment block 1221 and the matching hinge structure provided on the transparent display substrate 110 can also be understood by referring to the relevant description of the first adjustment block 1211 .

[0055] It should be noted that when the connecting member 123 is a rigid connecting member 123, the first adjusting block 1211 and the second adjusting block 1221 can only use one of them, and the position adjustment of the transparent display substrate 110 can be achieved, which can further save material costs and process costs. Figure 8 As shown, only the first adjustment block 1211 may be retained. In addition, when the first adjustment block 1211 and the second adjustment block 1221 are used at the same time, the fineness of adjustment can be guaranteed to avoid excessive adjustment errors.

[0056] In addition, the first adjustment block 1211 and the second adjustment block 1221 may only be connected to N-1 display substrates, and the remaining display substrate is used as a fixed reference substrate and does not move. Fig. 9 As shown. For example, when N is 2, any one of the display substrates can be used as a reference substrate; when N is greater than 2 and is an even number, any one of the two transparent display substrates 110 located in the middle of the stacking position can be used as a reference substrate; when N is greater than 2 and is a counted number, the transparent display substrate 110 located in the middle of the stacking position can be used as a reference substrate. This arrangement can ensure that when the overlapping area of ​​the transparent area changes from the maximum to the minimum, the first adjustment block 1211 and the second adjustment block 1221 can move the minimum displacement along their respective torque directions during the adjustment process.

[0057] If the connector 123 is a flexible connector 123, the connector 123 may be a connecting wire, for example, a metal wire or a wire of insulating material. That is, the transparent display substrate 110 and the first adjustment block 1211 and the second adjustment block 1221 are connected by connecting wires. When the angle of the first adjustment block 1211 is changed, the first adjustment block 1211 can pull the transparent display substrate 110 to move in the first direction through the connecting wire to adjust the position of the transparent display substrate 110; when the display panel 100 needs to restore the state before adjustment, the second adjustment block 1221 can pull the transparent display substrate 110 to move in the second direction through the connecting wire to restore the original transmittance, the first direction and the second direction are directions parallel to the target plane, and the first direction and the second direction are two opposite directions.

[0058] By adjusting the stacking position of the transparent display substrate 110 in the above manner, the overlap area of ​​the transparent area 102 on the target plane can be changed to achieve transmittance adjustment.

[0059] See also Fig.10 The position adjustment mechanism 120 can also be implemented based on a micromotor. The position adjustment mechanism 120 can include N first micromotors and N second micromotors, and the N transparent display substrates 110, the N first micromotors and the N second micromotors are all in one-to-one correspondence; that is, each transparent display substrate 110 can be connected to a first micromotor and a second micromotor.

[0060] For any transparent display substrate 110, the first end of the transparent display substrate 110 is connected to the first micromotor 1212, and the second end of the transparent display substrate 110 is connected to the second micromotor 1222; the first end and the second end of the transparent display substrate 110 are opposite ends; the first micromotor 1212 and the second micromotor 1222 are used to control the orthographic projection position of the transparent display substrate 110 on the target plane. It can be understood that when the orthographic projection position of the transparent display substrate 110 on the target plane changes, the overlapping area of ​​the transparent area can be changed, thereby achieving the purpose of adjusting the transmittance.

[0061] In some implementations, the sum of the widths of the N light-emitting regions 101 along the adjustment direction may be greater than or equal to the width of the sub-pixel region 1 along the adjustment direction. The N light-emitting regions 101 are a group of light-emitting regions 101 that match the N transparent display substrates 110, and the N transparent regions 102 are a group of transparent regions 102 that match the N transparent display substrates 110. For example, see Fig.11 , when N is 2, the width of the light-emitting area 101 of the first transparent display substrate 110 (1) is: W11, and the width of the sub-pixel area 1 is W12; the width of the light-emitting area 101 of the second transparent display substrate 110 (2) is: W21, and the width of the sub-pixel area 1 is W22. If the width of the sub-pixel area 1 in the two transparent display substrates 110 along the adjustment direction is W = W12 = W22 (two transparent display substrates 110 with exactly the same specifications), then W11 + W21 ≥ W, thereby ensuring that in a certain adjustment state, the orthographic projection of the transparent area 102 on the target plane can be completely blocked by the orthographic projection of the display area on the target plane, thereby ensuring that the display panel 100 can achieve a non-transparent display with a transmittance of 0.

[0062] In some implementations, when the transparent display substrate 110 is adjusted by the position adjustment mechanism 120, the moving distance of the transparent display substrate 110 may be no greater than the width of the light-emitting area 101 along the moving direction. Thus, within the minimum moving range of the transparent display substrate 110, the transmittance of the display panel 100 can be adjusted to any achievable transmittance value, which is any value within the achievable transmittance range of the display panel 100.

[0063] In this embodiment, if the sub-pixel regions 1 in each transparent display substrate 110 are the same size, the number of transparent display substrates 110 included in the display panel 100 can also be designed in the following manner to achieve adjustable transmittance of the display panel 100 and ensure the maximum adjustable range while controlling costs.

[0064] In some implementations, see Fig.12 and Fig.13 , Fig.12is the structural position of the display panel 100 when the transmittance is minimum, Fig.13 is the structural position of the display panel 100 when the transmittance is the maximum; (a) in the figure is a schematic diagram of the stacking position of the matching sub-pixel area 1, and (b) is a schematic diagram of the cross-sectional structure of the transparent display substrate 110. When the area of ​​the light-emitting area 101 in the sub-pixel area 1 accounts for more than 50%, the value of N can be determined to be 2. Specifically, the aforementioned N transparent display substrates 110 may include a first transparent display substrate 111 and a second transparent display substrate 112. The second transparent display substrate 112 is stacked on the light-emitting side of the first transparent display substrate 111. Since the area of ​​the light-emitting area 101 accounts for more than 50% of the area of ​​the sub-pixel area 1, when the position adjustment mechanism 120 adjusts the displacement of the second transparent display substrate 112 to be no greater than the width of the light-emitting area 101 (along the moving direction of the second transparent display substrate 112), the transparent area 102 of the first transparent display substrate 111 can be completely blocked, and the overlapping area of ​​the transparent area 102 on the target plane is 0, realizing a display state with a display transmittance of 0.

[0065] In some implementations, see Fig.14 and Fig.15 , Fig.14 is the structural position of the display panel 100 when the transmittance is minimum, Fig.15 It is the structural position when the transmittance of the display panel 100 is the maximum; (a) in the figure is a schematic diagram of the stacking position of the matching sub-pixel area 1, and (b) is a schematic diagram of the cross-sectional structure of the transparent display substrate 110. When the area of ​​the light-emitting area 101 of the sub-pixel area 1 accounts for 33% to 50%, the value of N can be determined to be 3. Specifically, the aforementioned N transparent display substrates 110 may include a first transparent display substrate 115, a second transparent display substrate 116 and a third transparent display substrate 117. At this time, one transparent area 102 needs to use at least two light-emitting areas 101 to be completely blocked, so that the overlapping area of ​​the transparent area 102 on the target plane is 0, and the display state of the display panel 100 with a transmittance of 0 can be achieved.

[0066] For example, when the area of ​​the light-emitting area 101 accounts for 40%, the area of ​​the transparent area 102 accounts for 60%; due to the structural characteristics of the sub-pixel, the light-emitting area 101 and the transparent area 102 can be equivalently regarded as two rectangular areas. Therefore, one light-emitting area 101 of the second transparent display substrate 116 can only block 40% of the area of ​​one transparent area 102 of the first transparent display substrate 115. The remaining 20% ​​of the transparent area 102 of the first transparent display substrate 115 needs to be blocked by the light-emitting area 101 of the third transparent display substrate 117 to achieve a display state with a transmittance of 0 for the display panel 100.

[0067] In some implementations, when the area of ​​the light-emitting area 101 in the sub-pixel area 1 accounts for 25% to 33%, the value of N can be determined to be 4. This example is not illustrated, and can be understood by referring to the illustration where N is 2 or 3. Specifically, the aforementioned N transparent display substrates 110 may include a first transparent display substrate, a second transparent display substrate, a third transparent display substrate, and a fourth transparent display substrate. At this time, one transparent area 102 needs to be shielded by at least three light-emitting areas 101 to ensure that the overlapping area of ​​the transparent area 102 on the target plane is 0, so as to achieve a display state with a transmittance of 0.

[0068] For example, when the area of ​​the light-emitting area 101 accounts for 30%, the area of ​​the transparent area 102 accounts for 70%; the light-emitting areas 101 of the second transparent display substrate and the third transparent display substrate can only block 60% of the area of ​​one light-emitting area 101 of the first transparent display substrate at most, and there is still 10% of the area on the first transparent display substrate that needs to be blocked by the light-emitting area 101 of the fourth transparent display substrate to achieve a display state with a transmittance of 0 for the display panel 100.

[0069] It should be noted that when the area ratio of the light-emitting area 101 in the sub-pixel area 1 is less than 25%, the above example can be referred to for analogy to obtain the corresponding technical solution of using the least transparent display substrate 110, which will not be repeated here. In addition, there is no restriction on whether the endpoint value of the area ratio range described in the above example is acceptable in any example.

[0070] In summary, a display panel 100 provided in an embodiment of the present invention changes the transmittance based on the relative position change of N stacked transparent display substrates 110. Each transparent display substrate 110 includes a plurality of sub-pixel areas 1, and the sub-pixel areas 1 between any two transparent display substrates 110 correspond to each other; the sub-pixel area 1 includes a light-emitting area 101 and a transparent area 102; N is a positive integer greater than or equal to 2. Furthermore, the position adjustment mechanism 120 is connected to at least N-1 transparent display substrates 110. Therefore, the relative position change of N stacked transparent display substrates 110 can be achieved based on the position adjustment mechanism 120, thereby changing the overlapping area of ​​the orthographic projection of each transparent area 102 of the N transparent display substrates 110 on the target plane, and the overlapping area is positively correlated with the transmittance of the display panel 100. Therefore, the transmittance of the display panel 100 is finally adjustable, and the entire implementation process does not require the use of a liquid crystal layer with variable transmittance, thereby avoiding a large transmittance loss and ensuring a larger adjustable transmittance range; at the same time, due to the use of multiple transparent display substrates 110, the display brightness and contrast can also be improved to a certain extent.

[0071] Based on the same inventive concept, a display device is also provided in one embodiment of the present invention, including: the display panel 100 described in any of the above embodiments. The display device can be a display device for building exterior windows, a display device for billboards, an AR display, and a display device for exhibitions, etc.

[0072] It should be noted that the present embodiment provides a display device, wherein each structure can be implemented with reference to the aforementioned display panel 100 embodiment, and the beneficial effects produced have been described in the aforementioned display panel 100 embodiment, and the details can be referred to the aforementioned description of the display panel 100 embodiment, which will not be repeated in this embodiment. The specific process implementation when each structure is manufactured can adopt the existing process technology, which is not limited in this embodiment.

[0073] In the above description, the technical details of the patterning and etching of each layer are not described in detail. However, those skilled in the art should understand that various technical means can be used to form layers, regions, etc. of desired shapes. In addition, in order to form the same structure, those skilled in the art can also design methods that are not completely the same as the methods described above. In addition, although the various embodiments are described above separately, this does not mean that the measures in the various embodiments cannot be used in combination to advantage.

[0074] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0075] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display panel, characterized in that: include: N transparent display substrates and a position adjustment mechanism; The N transparent display substrates are stacked, each of the transparent display substrates includes a plurality of sub-pixel areas, and the sub-pixel areas between any two transparent display substrates correspond to each other; the sub-pixel area includes a light-emitting area and a transparent area; N is a positive integer greater than or equal to 2; A position adjustment mechanism is connected to at least N-1 of the transparent display substrates, and the position adjustment mechanism is used to adjust the relative positions of the N transparent display substrates when they are stacked to change the overlapping area of ​​the orthographic projections of the transparent areas of the N transparent display substrates on the target plane; wherein the overlapping area is positively correlated with the transmittance of the display panel, and the target plane is a plane parallel to any of the transparent display substrates.

2. The display panel according to claim 1, wherein: The sum of the widths of the N light-emitting areas along the adjustment direction is greater than or equal to the width of the sub-pixel area along the adjustment direction; wherein the N light-emitting areas are a group of light-emitting areas that match each other in the N transparent display substrates.

3. The display panel according to claim 1, wherein: The sub-pixel areas of the N transparent display substrates have the same size.

4. The display panel according to claim 3, wherein: When the area of ​​the light-emitting area in the sub-pixel area accounts for more than 50%, N is 2.

5. The display panel according to claim 3, wherein: When the area of ​​the light-emitting area in the sub-pixel area accounts for 33% to 50%, the value of N is 3.

6. The display panel according to claim 3, wherein: When the light emitting area in the sub-pixel area accounts for 25% to 33%, N is 4.

7. The display panel according to claim 1, wherein: The position adjustment mechanism comprises: a first adjustment block and a second adjustment block, the first ends of the N transparent display substrates are all rotatably connected to the same side of the first adjustment block, the second ends of the N transparent display substrates are all rotatably connected to the same side of the second adjustment block, and the first end and the second end of the display substrate are opposite ends; The angles of the side surfaces of the first adjustment block and the second adjustment block relative to the transparent display substrate are changed to adjust the orthographic projection positions of the N transparent display substrates on the target plane.

8. The display panel according to claim 1, wherein: The position adjustment mechanism comprises: N first micromotors and N second micromotors, and the N transparent display substrates, the N first micromotors and the N second micromotors are in one-to-one correspondence; For any of the transparent display substrates, the first end of the transparent display substrate is connected to the first micromotor, and the second end of the transparent display substrate is connected to the second micromotor; the first end and the second end of the transparent display substrate are opposite ends; the first micromotor and the second micromotor are used to control the orthographic projection position of the transparent display substrate on the target plane.

9. The display panel according to any one of claims 1 to 8, characterized in that: The adjustment distance of the transparent display substrate by the position adjustment mechanism is not greater than the width of the light emitting area along the adjustment direction.

10. A display device, characterized in that: include: A display panel as claimed in any one of claims 1 to 9.

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