Display device and splicing display assembly

Abstract

The invention provides a display device and a tiled display assembly, and relates to the technical field of display devices. The display device comprises a screen body, a first packaging layer and a second packaging layer, the first packaging layer is stacked on the light emitting side of the screen body, at least part of the second packaging layer is stacked on the side edge of the screen body, and the thickness of the second packaging layer is larger than that of the first packaging layer. The difference value between the optical density of the second packaging layer in the thickness direction of the screen body and the optical density of the first packaging layer in the thickness direction of the screen body is not greater than a preset value. Therefore, the light density of the first packaging layer and the light density of the second packaging layer in the thickness direction of the screen body are close, the light quantity absorbed by the first packaging layer and the light quantity absorbed by the second packaging layer are close, when the display device is in a low-brightness display state or an ink color display state, the display effects of the light emitting side and the side edge of the display device can be close, and the display effect of the display device is improved. Therefore, the display device and the splicing display assembly have better display effect consistency in low-brightness display and ink color display states.

Description

Technical Field

[0001] The present application relates to a display device and a spliced ​​display assembly, belonging to the field of semiconductor technology. Background Art

[0002] In the preparation process of the display device, the light-emitting side and the side edges of the display device need to be packaged. Due to the different structures of the packaging part on the light-emitting side and the side edge packaging part, it is easy for the display device to have obvious differences in display effects on the light-emitting side and the side edges when displaying at low brightness or inky colors, which in turn leads to poor display effects of the display device. Summary of the invention

[0003] The present application provides a display device and a spliced ​​display assembly, which solves the problem of poor display consistency of current display devices under low brightness and ink color display conditions, and can solve the problem of poor display effect of a spliced ​​display assembly having the display device.

[0004] In a first aspect, the present application provides a display device, comprising:

[0005] Screen body;

[0006] A first encapsulation layer is stacked on the light-emitting side of the screen body;

[0007] A second encapsulation layer, at least partially superimposed on a side edge of the screen body;

[0008] Specifically, the first encapsulation layer has a first thickness in the thickness direction of the screen body, the second encapsulation layer has a second thickness in the thickness direction of the screen body, the second thickness of at least part of the second encapsulation layer is greater than the first thickness, and the difference between the optical density of the second encapsulation layer in the thickness direction of the screen body and the optical density of the first encapsulation layer in the thickness direction of the screen body is not greater than a preset value.

[0009] In some implementations, the preset value is 1.

[0010] In some embodiments, the light-emitting side includes a display area and a non-display area, and the non-display area is disposed on one side of the display area.

[0011] In some embodiments, the second packaging layer includes a first sub-packaging portion and a second sub-packaging portion connected to each other, the first packaging layer is stacked on the display area, the first sub-packaging portion is stacked on the non-display area, and the second sub-packaging portion is stacked on the side, and the difference between the optical density of the first packaging layer in the thickness direction of the screen body and the optical density of the first sub-packaging portion in the thickness direction of the screen body is not greater than a preset value.

[0012] In some embodiments, the light transmittance of the first encapsulation layer is less than the light transmittance of the second encapsulation layer.

[0013] In some embodiments, the display device further includes a third encapsulation layer, the first encapsulation layer is stacked in the display area, and the third encapsulation layer is stacked in the non-display area;

[0014] The third encapsulation layer has a third thickness in the thickness direction of the screen body, the first thickness is the same as the third thickness, the transmittance of the first encapsulation layer is the same as the transmittance of the third encapsulation layer, and the opening ratio of the first encapsulation layer is the same as the opening ratio of the third encapsulation layer.

[0015] In some embodiments, the display device further includes a third encapsulation layer, the first encapsulation layer is stacked in the display area, and the third encapsulation layer is stacked in the non-display area;

[0016] A difference between an optical density of the third encapsulation layer in the thickness direction of the screen body and an optical density of the first encapsulation layer in the thickness direction of the screen body is not greater than a preset value.

[0017] In some embodiments, in the thickness direction of the screen body, the thickness of the first encapsulation layer and the thickness of the third encapsulation layer are different.

[0018] In some embodiments, a protective layer is further included, and the protective layer is located on a side of the first encapsulation layer facing away from the screen body and a side of the second encapsulation layer facing away from the screen body.

[0019] In a second aspect, based on the above display device, the present application also provides a spliced ​​display assembly, including the above display device.

[0020] In some embodiments, the spliced ​​display assembly includes at least two of the display devices, and the at least two of the display devices are arranged in sequence along a thickness direction perpendicular to a screen body of the display device, and the second packaging layers of the two display devices are butt-jointed.

[0021] In the display device and spliced ​​display assembly provided by the present application, the first encapsulation layer and the second encapsulation layer of the display device are respectively stacked on the light-emitting side and the side of the screen body, which can protect the light-emitting side and the side of the screen body respectively. The thickness of the first encapsulation layer is less than the thickness of the second encapsulation layer, so that the thickness of the first encapsulation layer is relatively thin, so that after the first encapsulation layer is stacked on the light-emitting side of the screen body, the overall thickness of the screen body is also relatively thin, thereby making the display device structure of the present application compact. The difference in optical density between the first encapsulation layer and the second encapsulation layer in the thickness direction of the screen body is not greater than a preset value, so that the optical density of the first encapsulation layer and the second encapsulation layer in the thickness direction of the screen body is close, so that the amount of light that can be absorbed by the first encapsulation layer and the second encapsulation layer is close, and when the display device is in a low-brightness display or ink display state, the display effect of the light-emitting side and the side of the display device can be relatively close, so that the display effect consistency of the display device in the low-brightness display and ink display states is better.

[0022] The spliced ​​display assembly of the present application is formed by docking a plurality of display devices, and the sides of the plurality of display devices are docked, so the docking of the second packaging layers of the plurality of display devices can form a splicing seam of the spliced ​​display assembly. When the individual display devices have better display consistency in low-brightness display and ink display states, the display area and the splicing seam of the spliced ​​display assembly can also have a relatively consistent display effect in low-brightness display and ink display states. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other purposes, features and advantages of the embodiments of the present application will become more easily understood through the following detailed description with reference to the accompanying drawings. In the accompanying drawings, multiple embodiments of the present application will be described in an exemplary and non-limiting manner, wherein:

[0024] Figure 1 A schematic diagram of a display device according to an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram showing that the difference in optical density between the first sub-encapsulation portion and the first encapsulation layer in the display device according to an embodiment of the present application is less than a preset value;

[0026] Figure 3 It is a schematic diagram of a case where the aperture ratio of the third encapsulation layer of the display device of an embodiment of the present application is the same as the aperture ratio of the first encapsulation layer;

[0027] Figure 4 It is a top view schematic diagram of a display device in an embodiment of the present application in which the aperture ratio of the third encapsulation layer is the same as the aperture ratio of the first encapsulation layer;

[0028] Figure 5This is a schematic diagram showing that the thickness of the third encapsulation layer of the display device of the embodiment of the present application is less than that of the first encapsulation layer, and the difference in optical density between the third encapsulation layer and the first encapsulation layer is less than a preset value;

[0029] Figure 6 This is a schematic diagram showing that the thickness of the third encapsulation layer of the display device of the embodiment of the present application is greater than that of the first encapsulation layer, and the difference in optical density between the third encapsulation layer and the first encapsulation layer is less than a preset value;

[0030] Figure 7 Schematic diagram of a spliced ​​display assembly according to an embodiment of the present application.

[0031] Reference numerals:

[0032] 100-screen body, 110-light emitting side, 111-display area, 112-non-display area, 120-side, 130-backlight side, 140-light emitting component,

[0033] 200-first encapsulation layer,

[0034] 300 - second encapsulation layer, 310 - first sub-encapsulation part, 320 - second sub-encapsulation part,

[0035] 400 - a third packaging layer, 410 - a cavity. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0042] In the preparation process of the display device, the light-emitting side and the side edges of the display device need to be packaged. Due to the different structures of the packaging part on the light-emitting side and the side edge packaging part, it is easy to cause the display effect of the light-emitting side and the edge part of the display device to be significantly different when the display is displayed at low brightness or inky colors, which in turn leads to poor display effect of the display device.

[0043] Specifically, in order to make the structure of the display device compact and reduce the thickness of the display device, the thinner the thickness of the side of the packaging part on the light-emitting side of the display device, the thinner the overall thickness of the display device. Since the packaging part on the side needs to cover the side of the display device, the thickness of the packaging part on the side is thicker than the thickness of the packaging structure on the light-emitting side. This results in obvious differences in the structure of the packaging part on the light-emitting side and the packaging part on the side, which in turn causes obvious differences in the light-emitting side and the side parts of the display device when the display device is in low brightness or ink display conditions.

[0044] Furthermore, when the display device is applied to a spliced ​​display assembly, if each individual display device has the problem of poor consistency in display effects under low brightness or ink color display conditions, especially the display effect consistency between the contact position of adjacent display devices and the display area of ​​the display device is even worse, the problem of inconsistent display effects of the spliced ​​display assembly under low brightness or ink color display conditions is more serious.

[0045] In the display device and spliced ​​display assembly provided by the present application, the first encapsulation layer and the second encapsulation layer are respectively stacked on the light-emitting side and the side of the screen body, which can protect the light-emitting side and the side of the screen body respectively. The thickness of the first encapsulation layer is less than the thickness of the second encapsulation layer, so that the thickness of the first encapsulation layer is relatively thin, so that after the first encapsulation layer is stacked on the light-emitting side of the screen body, the overall thickness of the screen body is also relatively thin, thereby making the display device structure of the present application compact. The difference in optical density between the first encapsulation layer and the second encapsulation layer in the thickness direction of the screen body is not greater than a preset value, so that the optical density of the first encapsulation layer and the second encapsulation layer in the thickness direction of the screen body can be close, so that the amount of light that can be absorbed by the first encapsulation layer and the second encapsulation layer is close, and when the display device is in a low-brightness display or ink display state, the display effect of the light-emitting side and the side of the display device can be relatively close, so that the display effect consistency of the display device in the low-brightness display and ink display states is better.

[0046] Furthermore, when the display device of the present application is applied to a spliced ​​display assembly, the spliced ​​display assembly is formed by docking a plurality of display devices. Specifically, the sides of the plurality of display devices are docked, so that the second packaging layers of the plurality of display devices are docked to form a splicing part of the spliced ​​display assembly. When the display effect consistency of a single display device is better under low-brightness display and ink color display conditions, the display area and the splicing part of the spliced ​​display assembly can also have a relatively consistent display effect under low-brightness display and ink color display conditions.

[0047] The display device provided in the present application is described in detail below in conjunction with specific embodiments.

[0048] The present application embodiment provides a display device, referring to Figure 1, including a screen body 100, a first encapsulation layer 200 and a second encapsulation layer 300. The display device can be applied to electronic devices, and the electronic devices can be mobile phones, tablet computers, laptop computers, PDAs, in-vehicle electronic devices, wearable devices, ultra mobile personal computers (ultra mobile personal computers, referred to as UMPC), netbooks or personal digital assistants (personal digital assistants, referred to as PDA) and other mobile devices, and can also be personal computers (personal computers, referred to as PC), televisions (television, referred to as TV), ATMs or self-service machines and other non-mobile devices. Therefore, the embodiment of the present application can also provide an electronic device, which includes the display device above.

[0049] Among them, the screen body 100 is the basic component of the display device of the present application, and the screen body 100 can provide an installation basis for at least some of the other components of the display device. The display device can specifically include a base layer, a driving circuit layer, a connecting layer and a light-emitting layer, wherein the base layer is the basic component of the substrate, and the base layer can provide an installation basis for at least some of the other components of the substrate. When the display device of the present application is a rigid display device, the base layer can specifically adopt a glass substrate so that the substrate has good structural strength. When the display device of the present application is a flexible display device, the base layer can specifically be prepared using a polyimide material. The present application does not limit the specific material of the base layer. The driving circuit layer can be superimposed on the base layer, and the driving circuit layer can specifically be provided with a TFT driving circuit, that is, a thin film transistor driving circuit. Of course, the driving circuit layer can also be other circuit structures, which the present application does not limit. The connecting layer is stacked on the side of the driving circuit layer away from the base layer, and the connecting layer is electrically connected to the driving circuit layer. The light-emitting layer is stacked on the side of the connecting layer away from the driving circuit layer, and the light-emitting layer is also electrically connected to the connecting layer. Therefore, the driving circuit layer can be electrically connected to the light-emitting layer through the connecting layer. The light-emitting side 110 of the light-emitting layer is arranged to face away from the connecting layer, so that the display device of the present application is an upper light-emitting structure.

[0050] The first encapsulation layer 200 is stacked on the light-emitting side 110 of the screen body 100, that is, the first encapsulation layer 200 is stacked on the light-emitting side 110 of the light-emitting layer, and the first encapsulation layer 200 can protect the light-emitting layer. At least part of the second encapsulation layer 300 is stacked on the side 120 of the screen body 100, and the second encapsulation layer 300 can encapsulate the side 120 of the screen body 100 to protect the side 120 of the screen body 100. The first encapsulation layer 200 has a first thickness (indicated by D1 in the drawings) in the thickness direction of the screen body 100, and the second encapsulation layer 300 has a second thickness (indicated by D2 in the drawings) in the thickness direction of the screen body 100, and the second thickness of at least part of the second encapsulation layer 300 is greater than the first thickness of the first encapsulation layer 200, so that the thickness of the first encapsulation layer 200 is thinner than the second encapsulation layer 300. Since the first encapsulation layer 200 is stacked on the light-emitting side 110 of the screen body 100, the first encapsulation layer 200 with a relatively thin thickness can make the overall thickness of the display device relatively thin, thereby making the structure of the display device compact. The purpose of the second encapsulation layer 300 is to encapsulate the side 120 of the screen body 100, so the thickness of the second encapsulation layer 300 should at least be not less than the thickness of the screen body 100.

[0051] Since the first encapsulation layer 200 is stacked on the light-emitting side 110 of the screen body 100, the light emitted through the light-emitting side 110 of the screen body 100 needs to pass through the first encapsulation layer 200. The characteristics of the first encapsulation layer 200 itself have a certain influence on the light emitted by the screen body 100, and the light reflected by the external light after irradiating the light-emitting side 110 of the screen body 100 will also be affected by the characteristics of the first encapsulation layer 200 itself. The light reflected by the external light after irradiating the second encapsulation layer 300 of the side 120 of the screen body 100 will also be affected by the characteristics of the second encapsulation layer 300 itself.

[0052] In order to make the light-emitting side 110 and the side 120 of the screen 100 of the display device of the present application have a relatively consistent display effect in the state of low brightness display or ink display, the difference between the optical density of the second encapsulation layer 300 in the thickness direction of the screen 100 and the optical density of the first encapsulation layer 200 in the thickness direction of the screen 100 can be set to be not greater than a preset value, so that the optical density of the first encapsulation layer 200 and the second encapsulation layer 300 in the thickness direction of the screen 100 can be close. It should be understood that the optical density is defined as a representation of the light-shielding ability of the material, and the optical density can be measured by a light-transmitting mirror, and specifically can represent the amount of light absorbed by the detected object. When the optical density of the first encapsulation layer 200 and the optical density of the second encapsulation layer 300 are close, the first encapsulation layer 200 and the second encapsulation layer 300 can absorb similar amounts of light, so that when the display device is in a low brightness display or ink display state, the display effect of the light-emitting side 110 and the side 120 of the display device can be relatively close, so that the display device has a relatively consistent display effect in a low brightness display or ink display state.

[0053] In some embodiments, it should be understood that when the second thickness of the second encapsulation layer 300 in the thickness direction of the screen body 100 is greater than the first thickness of the first encapsulation layer 200 in the thickness direction of the screen body 100, in order to make the difference between the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 and the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100 not greater than the preset value, the transmittance of the first encapsulation layer 200 and the transmittance of the second encapsulation layer 300 can be set differently. Specifically, the higher the transmittance of an object, the smaller the difference in the amount of light before and after the light passes through the object. If the transmittances of the first encapsulation layer 200 and the second encapsulation layer 300 are close to or the same, and the thickness of the second encapsulation layer 300 is thicker than that of the first encapsulation layer 200, then the amount of light absorbed by the light passing through the second encapsulation layer 300 is greater than the amount of light passing through the first encapsulation layer 200, thereby causing the color of the second encapsulation layer 300 to be darker than the first encapsulation layer 200 when the display device is displayed in ink color.

[0054] Therefore, the transmittance of the second encapsulation layer 300 can be set to be greater than the transmittance of the first encapsulation layer 200. In this way, although the second thickness of the second encapsulation layer 300 is thicker than the first thickness of the first encapsulation layer 200, the amount of light lost after the light passes through the second encapsulation layer 300 of unit thickness is less, and although the first thickness of the first encapsulation layer 200 is thinner than the second thickness of the second encapsulation layer 300, the amount of light lost after the light passes through the first encapsulation layer 200 of unit thickness is larger. In this way, when the first encapsulation layer 200 and the second encapsulation layer 300 have different thicknesses, the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 is closer to the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100.

[0055] In addition, it should be understood that the thinner the first thickness of the first encapsulation layer 200 is than the second thickness of the second encapsulation layer 300, the lower the transmittance of the first encapsulation layer 200 is than the transmittance of the second encapsulation layer 300, so that the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 is closer to the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100.

[0056] In some embodiments, the preset value of the present application is specifically 1, and the difference between the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 and the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100 is not greater than 1, so that the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 is relatively close to the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100. Specifically, the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 may be greater than the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100, or the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 may be less than the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100, and this application does not limit this. In the embodiment of the present application, when the optical density of the first encapsulation layer 200 is 3, the optical density of the second encapsulation layer 300 can be set to 2 to 4.

[0057] In some embodiments, reference Figure 1 and Figure 3 The light-emitting side 110 of the screen body 100 of the present application may specifically include a display area 111 and a non-display area 112, wherein the display area 111 may generate light to display a picture, and the non-display area 112 does not generate light, so the non-display area 112 does not display a picture. The display area 111 may be located on one side of the non-display area 112. Specifically, the non-display area 112 may be located on the edge area of ​​the light-emitting side 110 of the screen body 100, and the display area 111 is the area on the light-emitting side 110 of the screen body 100 except the non-display area 112. The non-display area 112 may be arranged around the display area 111, so that the non-display area 112 may be arranged on the four edges of the light-emitting side 110, and the display area 111 may be arranged in the middle part of the light-emitting side 110, so that the non-display area 112 completely surrounds the display area 111, so that the non-display area 112 can protect the display area 111.

[0058] Of course, the non-display area 112 can also be set around part of the display area 111. Specifically, when the display area 111 is a rectangular structure, the non-display area 112 can surround two or three sides of the display area 111. When the non-display area 112 surrounds two sides of the display area 111, the non-display area 112 can be set on two opposite sides of the display area 111.

[0059] In some embodiments, reference Figure 1In order to ensure that the second encapsulation layer 300 of the present application is stably and reliably connected to the screen body 100 after being stacked on the side 120 of the screen body 100, the second encapsulation layer 300 can be arranged to cover part of the light-emitting side 110 of the screen body 100, so that the second encapsulation layer 300 is not only connected to the side 120 of the screen body 100, but also connected to the light-emitting side 110 of the screen body 100. It should be understood that the side 120 of the screen body 100 and the light-emitting side 110 are arranged at an angle, so the second encapsulation layer 300 can be buckled on the side 120 of the screen body 100 and part of the light-emitting side 110 of the screen body, so that the second encapsulation layer 300 is more reliably connected to the screen body 100. In addition, the second encapsulation layer 300 can also cover part of the backlight side 130 of the screen body 100, and the backlight side 130 and the light-emitting side 110 of the screen body 100 are located on opposite sides of the screen body 100.

[0060] Specifically, refer to Figure 2 , the second encapsulation layer 300 includes a first sub-encapsulation part 310 and a second sub-encapsulation part 320, and the first sub-encapsulation part 310 and the second sub-encapsulation part 320 are connected. The first sub-encapsulation part 310 is superimposed on the non-display area 112 of the light-emitting side 110 of the screen body 100, and the second sub-encapsulation part 320 is superimposed on the side 120 of the screen body 100. Correspondingly, the first encapsulation layer 200 is superimposed on the display area 111 of the light-emitting side 110 of the screen body 100. The difference between the optical density of the first sub-encapsulation part 310 in the thickness direction of the screen body 100 and the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100 is also less than a preset value, so that the optical densities of the first sub-encapsulation part 310 and the first encapsulation layer 200 in the thickness direction of the screen body 100 can be close. When the optical density of the first sub-packaging portion 310 is close to that of the first packaging layer 200, the amount of light that can be absorbed by the first sub-packaging portion 310 and the first packaging layer 200 is close. When the display device is in a low-brightness display or ink display state, the display effects of the display area 111 and the non-display area 112 of the light-emitting side 110 of the display device can be relatively close, thereby allowing the display device to have a relatively consistent display effect in a low-brightness display or ink display state.

[0061] The second sub-packaging part 320 is superimposed on the side 120 of the screen body 100, so the difference between the optical density of the second sub-packaging part 320 in the thickness direction of the screen body 100 and the optical density of the first packaging layer 200 in the thickness direction of the screen body 100 is also not greater than the preset value, so that the optical densities of the second sub-packaging part 320 and the first packaging layer 200 in the thickness direction of the screen body 100 are close. The second sub-packaging part 320 and the first packaging layer 200 can absorb similar amounts of light, so that when the display device is in a low-brightness display or ink display state, the display effects of the light-emitting side 110 and the side 120 of the display device can be relatively close, so that the display device has a relatively consistent display effect in a low-brightness display or ink display state.

[0062] To sum up, when the display device of the present application is in a low-brightness display or ink display state, the display effects of the display area 111, non-display area 112 and side 120 of the display device are relatively close, so that the display device of the present application has a more consistent display effect in a low-brightness display or ink display state.

[0063] refer to Figure 2 Since the first sub-packaging part 310 and the second sub-packaging part 320 both belong to the second packaging layer 300 , the first sub-packaging part 310 and the second sub-packaging part 320 are made of the same material, so that the light transmittance of the first sub-packaging part 310 and the second sub-packaging part 320 is also the same. When the optical densities of the first packaging layer 200 and the second sub-packaging part 320 in the thickness direction of the screen body 100 are close, and the thickness dimension of the second sub-packaging part 320 in the thickness direction of the screen body 100 is greater than that of the first packaging layer 200, if it is necessary to make the optical densities of the first sub-packaging part 310 and the second packaging layer 200 in the thickness direction of the screen body 100 close, then the optical density of the first sub-packaging part 310 needs to be close to that of the second sub-packaging part 320 in the thickness direction of the screen body 100, so that the thickness dimension of the first sub-packaging part 310 is also close to that of the second sub-packaging part 320. Then, when the thickness dimension of the second sub-packaging part 320 in the thickness direction of the screen body 100 is greater than the first thickness of the first packaging layer 200, the thickness dimension of the first sub-packaging part 310 in the thickness direction of the screen body 100 is also greater than that of the first packaging layer 200.

[0064] In addition, it should be understood that if the thickness of the screen body 100 itself is smaller than the thickness of the first encapsulation layer 200, so that the thickness of the second encapsulation layer 300 is smaller than the thickness of the first encapsulation layer 200, then correspondingly, the thickness of the first sub-encapsulation part 310 and the second sub-encapsulation part 320 may also be smaller than the thickness of the first encapsulation layer 200, so that the ink display effects of the display area 11, non-display area 112 and side 120 of the display device are closer.

[0065] In some embodiments, reference Figure 3, when the second encapsulation layer 300 of the present application is only stacked on the side 120 of the screen body 100, but not stacked on the non-display area 112 of the light-emitting side 110 of the screen body 100, the display device of the present application further includes a third encapsulation layer 400. The third encapsulation layer 400 is stacked on the non-display area 112 of the light-emitting side 110, and the third encapsulation layer 400 can encapsulate the non-display area 112 of the light-emitting side 110. Specifically, a side of the third encapsulation layer 400 adjacent to the display area 111 can contact a side of the first encapsulation layer 200 adjacent to the non-display area 112, and the third encapsulation layer 400 has a third thickness (indicated by D3 in the drawings) in the thickness direction of the screen body 100, and the third thickness is the same as the first thickness, so that the encapsulation layer structure of the light-emitting side 110 of the screen body 100 can be flat. The light transmittance of the first encapsulation layer 200 and the light transmittance of the third encapsulation layer 400 can be set to be the same. Specifically, the first encapsulation layer 200 and the third encapsulation layer 400 can be made of the same material, so that the first encapsulation layer 200 and the third encapsulation layer 400 can be connected so that the first encapsulation layer 200 and the third encapsulation layer 400 are an integrated structure. When preparing the display device of the present application, the first encapsulation layer 200 and the third encapsulation layer 400 can be stacked on the light-emitting side 110 of the screen body 100 through a one-time encapsulation process, so as to reduce the number of steps in the preparation process of the display device and reduce the difficulty of preparation.

[0066] The aperture ratio of the first encapsulation layer 200 and the aperture ratio of the third encapsulation layer 400 can be set to be the same. Of course, it should be understood that the same aperture ratio proposed in this application is the same as that which can be achieved under the existing process technology, and is not absolutely the same in the mathematical sense. Therefore, there may be a certain error between the aperture ratio of the first encapsulation layer 200 and the aperture ratio of the third encapsulation layer 400. It should be understood that the aperture ratio refers to the ratio between the area of ​​the part through which light passes after removing the wiring part and the transistor part (usually hidden by the black matrix) of each sub-pixel and the area of ​​the whole sub-pixel. The higher the aperture ratio, the higher the efficiency of light passing. When the aperture ratio of the first encapsulation layer 200 and the aperture ratio of the third encapsulation layer 400 are set to be the same, the amount of light passing through the first encapsulation layer 200 and the third encapsulation layer 400 can also be the same, so that the amount of light absorbed by the first encapsulation layer 200 and the third encapsulation layer 400 is the same. In this way, when the display device of the present application is in a low-brightness display or ink display state, the display effects of the first encapsulation layer 200 and the third encapsulation layer 400 are relatively close, so that the display effects of the display area 111 and the non-display area 112 of the display device are relatively consistent.

[0067] It should be understood that reference Figure 4Since the display area 111 of the screen body 100 can display images, the portion of the screen body 100 corresponding to the display area 111 has a corresponding display component 140. After the first packaging layer 200 is stacked on the display area 111 of the light-emitting side 110, the first packaging layer 200 has a cavity corresponding to the display component 140 of the display area 111, resulting in the display component 140 corresponding to the display area 111 in the screen body 100 affecting the aperture ratio of the first packaging layer 200, thereby making the aperture ratio of the first packaging layer 200 less than 100%. Since the non-display area 112 does not emit light or display images, the portion of the screen body 100 corresponding to the non-display area 112 does not have the display component 140. In order to make the opening ratio of the third encapsulation layer 400 match the opening ratio of the first encapsulation layer 200, a cavity 410 can be set in the third encapsulation layer 400. This can also reduce the opening ratio of the third encapsulation layer 400, so that the opening ratio of the third encapsulation layer 400 matches the opening ratio of the first encapsulation layer 200.

[0068] In some embodiments, reference Figure 5 and Figure 6 The third encapsulation layer 400 of the present application may also adopt a material different from that of the first encapsulation layer 200, so that the optical density of the third encapsulation layer 400 in the thickness direction of the screen body 100 is the same as the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100. In this way, the display area 111 and the non-display area 112 can have a more consistent display effect when the display device is in low brightness or ink display mode.

[0069] Specifically, the light transmittance of the third encapsulation layer 400 may be set to be greater than the light transmittance of the first encapsulation layer 200, or the light transmittance of the third encapsulation layer 400 may be set to be less than the light transmittance of the first encapsulation layer 200, and this application does not limit this. Figure 6 When the light transmittance of the third encapsulation layer 400 is greater than the light transmittance of the first encapsulation layer 200, the thickness of the third encapsulation layer 400 in the thickness direction of the screen body 100 is greater than the first thickness of the first encapsulation layer 200. Figure 5 When the transmittance of the third encapsulation layer 400 is less than the transmittance of the first encapsulation layer 200 , the thickness of the third encapsulation layer 400 in the thickness direction of the screen body 100 is less than the first thickness of the first encapsulation layer 200 .

[0070] In some embodiments, the display device of the present application further includes a protective layer, which can be disposed on the side of the first encapsulation layer 200 and the second encapsulation layer 300 facing away from the screen body 100 to cover and shield the first encapsulation layer 200 and the second encapsulation layer 300. Specifically, the portion of the protective layer corresponding to the first encapsulation layer 200 is opposite to the light-emitting side 110 of the screen body 100, and the portion of the protective layer corresponding to the second encapsulation layer 300 is opposite to the side 120 of the screen body 100, so that the first encapsulation layer 200 and the second encapsulation layer 300 can be prevented from being directly exposed. The side of the protective layer facing away from the screen body 100 can be set to a plane, so that regardless of whether the first thickness of the first encapsulation layer 200 and the third thickness of the third encapsulation layer 400 are the same, the light-emitting side 110 of the display device of the present application can be made flat.

[0071] A spliced ​​display assembly is formed by splicing multiple display devices to form a display assembly with a larger display area. Therefore, the current single display device has poor display uniformity in low brightness or ink display state, which will cause the overall spliced ​​display assembly to have uneven display problems.

[0072] To this end, the embodiment of the present application further proposes a spliced ​​display component to solve the problem of poor display consistency of the current spliced ​​display component in the state of low brightness or ink color display.

[0073] Specifically, refer to Figure 7 The spliced ​​display assembly of the present application includes at least two display devices of the present application, and the at least two display devices are arranged in sequence along a thickness direction perpendicular to the screen body 100 of the display device, and the second encapsulation layers 300 of two adjacent display devices are butt-jointed, so that the two adjacent display devices can be closely arranged, so that there is no gap between the adjacent display devices, so that the spliced ​​display assembly can be arranged without a gap.

[0074] Specifically, when the number of display devices in the spliced ​​display assembly is more than two, some of the display devices may be arranged along the first direction (i.e., the adjacent Figure 7 The display devices may be arranged in sequence along the second direction (i.e., the X direction). Figure 7 The first direction and the second direction are both perpendicular to the thickness direction of the screen body 100 of the display device, and the first direction and the second direction are perpendicular to each other, so that the appearance of the spliced ​​display assembly of the present application is more diverse.

[0075] It should be understood that, since the difference between the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100 and the optical density of the second encapsulation layer 300 in the thickness direction of the screen body 100 in the display device of the present application is less than the preset value, the display area 111 and the side 120 part of the display device have better display consistency when the display device is in a low-brightness display or ink display state. The difference between the optical density of the first encapsulation layer 200 in the thickness direction of the screen body 100 and the optical density of the third encapsulation layer 400 in the thickness direction of the screen body 100 is less than the preset value, or the aperture ratio of the first encapsulation layer 200 and the third encapsulation layer 400 is the same, so that the display area 111 and the non-display area 112 of the display device have better display consistency when the display device is in a low-brightness display or ink display state. In this way, the display effect consistency of the display device in a low-brightness display or ink display state can be better, and finally the spliced ​​display component of the present application has better display consistency when the spliced ​​display component is in a low-brightness display or ink display state.

[0076] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned implementation modes, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims

1. A display device, characterized in that: include: Screen body; A first encapsulation layer is stacked on the light-emitting side of the screen body; A second encapsulation layer, at least partially superimposed on a side edge of the screen body; Specifically, the first encapsulation layer has a first thickness in the thickness direction of the screen body, the second encapsulation layer has a second thickness in the thickness direction of the screen body, the second thickness of at least part of the second encapsulation layer is greater than the first thickness, and the difference between the optical density of the second encapsulation layer in the thickness direction of the screen body and the optical density of the first encapsulation layer in the thickness direction of the screen body is not greater than a preset value.

2. The display device according to claim 1, characterized in that The light-emitting side includes a display area and a non-display area, and the non-display area is arranged on one side of the display area.

3. The display device according to claim 2, characterized in that The second encapsulation layer includes a first sub-encapsulation portion and a second sub-encapsulation portion connected to each other, the first encapsulation layer is stacked on the display area, the first sub-encapsulation portion is stacked on the non-display area, and the second sub-encapsulation portion is stacked on the side, and the difference between the optical density of the first encapsulation layer in the thickness direction of the screen body and the optical density of the first sub-encapsulation portion in the thickness direction of the screen body is not greater than a preset value.

4. The display device according to claim 3, characterized in that The light transmittance of the first encapsulation layer is less than the light transmittance of the second encapsulation layer.

5. The display device according to claim 2, characterized in that: It also includes a third encapsulation layer, wherein the first encapsulation layer is stacked in the display area, and the third encapsulation layer is stacked in the non-display area; The third encapsulation layer has a third thickness in the thickness direction of the screen body, the first thickness is the same as the third thickness, the transmittance of the first encapsulation layer is the same as the transmittance of the third encapsulation layer, and the opening ratio of the first encapsulation layer is the same as the opening ratio of the third encapsulation layer.

6. The display device according to claim 2, characterized in that It also includes a third encapsulation layer, wherein the first encapsulation layer is stacked in the display area, and the third encapsulation layer is stacked in the non-display area; A difference between an optical density of the third encapsulation layer in the thickness direction of the screen body and an optical density of the first encapsulation layer in the thickness direction of the screen body is not greater than a preset value.

7. The display device according to claim 6, characterized in that In the thickness direction of the screen body, the first encapsulation layer and the third encapsulation layer have different thicknesses.

8. The display device according to any one of claims 1 to 7, characterized in that: It also includes a protective layer, which is located on a side of the first encapsulation layer facing away from the screen body and a side of the second encapsulation layer facing away from the screen body.

9. A splicing display assembly, characterized in that: The invention comprises a display device as claimed in any one of claims 1 to 8.

10. The spliced ​​display assembly according to claim 9, characterized in that: It comprises at least two display devices, which are arranged in sequence along a thickness direction perpendicular to a screen body of the display device, and the second encapsulation layers of the two display devices are butted against each other.

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