Display module and display device

Abstract

The application provides a display module and a display device, and solves the problem that the color cast easily occurs in the arc-shaped area of the display module in the prior art. The display module comprises a display panel, an arc-shaped area with an arc surface and a flat area; a light path adjusting layer is sequentially stacked on the flat area and the arc-shaped area of the display panel; a light-emitting sub-pixel located in the flat area has a first color coordinate after passing through the light path adjusting layer, a light-emitting sub-pixel located in the arc-shaped area has a second color coordinate after passing through the light path adjusting layer, and the distance between the first color coordinate and the second color coordinate in a color coordinate diagram is less than or equal to a first threshold value.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of flexible display technology, 3D curved display screens emerge as the times require. Such display screens usually include an arc-shaped area, which is prone to color cast, affecting the display effect. SUMMARY

[0003] Therefore, the embodiments of the present application provide a display module and a display device to solve the problem that the arc-shaped area of the display module is prone to color cast in the prior art.

[0004] The first aspect of the present application provides a display module, which includes a display panel having a flat area and an arc-shaped area adjacent to the flat area and having an arc surface; a light path adjusting layer sequentially stacked on the flat area and the arc-shaped area of the display panel; a light-emitting sub-pixel located in the flat area has a first color coordinate after passing through the light path adjusting layer, and a light-emitting sub-pixel located in the arc-shaped area has a second color coordinate after passing through the light path adjusting layer, and the distance between the first color coordinate and the second color coordinate in the color coordinate diagram is less than or equal to a first threshold value. Through the above design, the color coordinates of the pictures displayed in different areas in the color coordinate diagram are the same or similar, thereby avoiding color cast.

[0005] In one embodiment, the light path adjusting layer includes a plurality of light path adjusting structures, and each light path adjusting structure corresponds to at least one light-emitting sub-pixel.

[0006] In one embodiment, the light path adjusting layer includes a first film layer and a second film layer, and the second film layer is located on the side of the first film layer away from the display panel, the first film layer includes a plurality of openings, the included angle between the side wall of the opening and the light-out surface is an obtuse angle, and the orthogonal projection of the opening in the light-out direction covers the corresponding light-emitting sub-pixel; the second film layer covers the first film layer and fills the opening; the refractive index of the second film layer is greater than the refractive index of the first light path adjusting, and the light path adjusting structure is the interface between the first film layer and the second film layer.

[0007] In one embodiment, the light path adjusting layer includes a first film layer and a second film layer, wherein the first film layer is independently provided with a plurality of light path adjusting units, each light path adjusting unit covers one light-emitting sub-pixel in the orthogonal projection in the light-out direction, and an obtuse angle is formed between the side wall of the light path adjusting unit and the light-out surface, and the second film layer covers the first film layer and fills the gap between the light path adjusting units; and the refractive index of the first film layer is greater than the refractive index of the second film layer, and the light path adjusting structure is the interface between the first film layer and the second film layer.

[0008] In an embodiment, the light-emitting sub-pixel includes a first light-emitting sub-pixel; in the flat area, an edge of a normal projection of the first light-emitting sub-pixel in the light-emitting direction and an edge of a normal projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are at a first distance; in the arc area, an edge of a normal projection of the first light-emitting sub-pixel in the light-emitting direction and an edge of a normal projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are at a second distance, and the first distance and the second distance are different.

[0009] In an embodiment, the light-emitting sub-pixel further includes a second light-emitting sub-pixel; in the flat area, an edge of a normal projection of the second light-emitting sub-pixel in the light-emitting direction and an edge of a normal projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are at a third distance; in the arc area, an edge of a normal projection of the second light-emitting sub-pixel in the light-emitting direction and an edge of a normal projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are at a fourth distance, and the third distance and the fourth distance are equal.

[0010] In an embodiment, the light-emitting sub-pixel further includes a third light-emitting sub-pixel, an edge of a normal projection of the third light-emitting sub-pixel in the light-emitting direction and an edge of a normal projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are at a fifth distance, and an edge of a normal projection of the third light-emitting sub-pixel in the light-emitting direction and an edge of a normal projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are at a sixth distance; the fifth distance and the sixth distance are equal.

[0011] In an embodiment, the first light-emitting sub-pixel is a red light-emitting sub-pixel, and the first distance is smaller than the second distance.

[0012] In an embodiment, the first light-emitting sub-pixel includes a green light-emitting sub-pixel, and the second distance is smaller than the first distance.

[0013] In an embodiment, in a direction from the flat area to the arc area, when the second distance is smaller than the first distance, the second distance gradually decreases; when the second distance is greater than the first distance, the second distance gradually increases. In this way, the display effect can be further optimized by adapting to the curvature of the cover plate of the arc area.

[0014] In an embodiment, in the flat area, an interface of the light path adjusting structure corresponding to the first light-emitting sub-pixel and the display panel form a first acute angle; in the arc area, an interface of the light path adjusting structure corresponding to the first light-emitting sub-pixel and the display panel form a second acute angle, and the first acute angle and the second acute angle are different.

[0015] In an embodiment, the first light-emitting sub-pixel is a red light-emitting sub-pixel, and the first acute angle is greater than the second acute angle.

[0016] In an embodiment, the first light-emitting sub-pixel includes a green light-emitting sub-pixel, and the first acute angle is smaller than the second acute angle.

[0017] The second aspect of the present application provides a display device comprising the display module provided in any of the above embodiments.

[0018] According to the display module and the display device provided in the embodiments of the present application, the display module comprises a display panel having a flat area and an arc area adjacent to the flat area and having an arc surface; a light path adjusting layer is sequentially stacked on the flat area and the arc area of the display panel; a light-emitting sub-pixel located in the flat area has a first color coordinate after passing through the light path adjusting layer, and a light-emitting sub-pixel located in the arc area has a second color coordinate after passing through the light path adjusting layer, and the distance between the first color coordinate and the second color coordinate in a color coordinate diagram is less than or equal to a first threshold value. The color coordinates of the pictures displayed in different areas in the color coordinate diagram can be the same or similar, thereby avoiding color deviation. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of a stereoscopic structure of a display module in the related art.

[0020] Figure 2 FIG. 2 is a schematic diagram of a partial cross-sectional structure of the display module shown in FIG. 1. Figure 1

[0021] Figure 3 FIG. 4 is a schematic diagram of a partial cross-sectional structure of a display module provided in a first embodiment of the present application.

[0022] Figure 4 FIG. 5 is a schematic diagram of a partial cross-sectional structure of a display module provided in a second embodiment of the present application.

[0023] Figure 5 FIG. 6 is a schematic diagram of a partial top view of a display module provided in a third embodiment of the present application.

[0024] Figure 6 FIG. 7 is a schematic diagram of a partial top view of a display module provided in a fourth embodiment of the present application.

[0025] Figure 7 FIG. 8 is a schematic diagram of a partial top view of a display module provided in a fifth embodiment of the present application.

[0026] Figure 8 FIG. 9 is a schematic diagram of a partial top view of a display module provided in a sixth embodiment of the present application.

[0027] Figure 9 FIG. 10 is a schematic diagram of a partial cross-sectional structure of a display module provided in a seventh embodiment of the present application.

[0028] Figure 10 FIG. 11 is a schematic diagram of a partial cross-sectional structure of a display module provided in an eighth embodiment of the present application. DETAILED DESCRIPTION

[0029] ​As mentioned in the background, the arc-shaped area of the display screen in the related art often has color deviation, affecting the display effect. Figure 1 FIG. 1 is a schematic diagram of a three-dimensional structure of a display module in the related art. As shown in FIG. 1, the display module includes a display panel and a light path adjustment layer stacked in the light emission direction of the display panel. The display panel has a flat area and an arc-shaped area adjacent to the flat area and having an arc surface. The display panel includes a plurality of light-emitting sub-pixels. When the display panel displays a picture, the picture can be a pure color picture, for example, a pure white picture. Figure 1 As shown in FIG. 1, the inventors have found that one of the reasons for the color deviation of the arc-shaped area S is that when an observer is at a predetermined position to observe the display screen, the viewing angle of the observer relative to the arc-shaped area S is different from the viewing angle relative to the flat area L, resulting in different proportions of single color light-emitting sub-pixels in white light in different areas, causing color deviation. For example, when the observer is at a position to view the flat area L, if the outgoing light of the arc-shaped area S enters the human eye at a small viewing angle, the arc-shaped area S can have a white light deviation to pink at a small viewing angle β1. This is because at a small viewing angle, the proportion of red light-emitting sub-pixels in white light in the arc-shaped area S is higher than that in the flat area. For another example, when the observer is at a position to view the flat area L, if the outgoing light of the arc-shaped area S enters the human eye at a large viewing angle, the arc-shaped area S can have a white light deviation to blue at a large viewing angle β2. This is because at a large viewing angle, the proportion of green light-emitting sub-pixels in white light in the arc-shaped area S is higher than that in the flat area L.

[0030] Therefore, embodiments of the present application provide a display module and a display device. The display module includes a display panel and a light path adjustment layer stacked in the light emission direction of the display panel. The display panel has a flat area and an arc-shaped area adjacent to the flat area and having an arc surface. The display panel includes a plurality of light-emitting sub-pixels. When the display panel displays a picture, the picture can be a pure color picture, for example, a pure white picture. When the flat area is observed at a position, the flat area has a first viewing angle relative to the observation position, and the light-emitting sub-pixels of the flat area have a first color coordinate after passing through the light path adjustment layer. When the arc-shaped area is observed at the position, the arc-shaped area has a second viewing angle relative to the observation position, and the light-emitting sub-pixels of the arc-shaped area have a second color coordinate after passing through the light path adjustment layer. The distance between the first color coordinate and the second color coordinate in a color coordinate diagram is less than or equal to a first threshold value. It should be noted that the color coordinate diagram in the embodiments is a CIE color diagram, which can be a CIE1931 color diagram or a CIE1976 color diagram, and preferably a CIE1976 color diagram. In addition, the first threshold value can be 0.004 or a value less than 0.004, for example, 0.0038, 0.0036, 0.0035, etc. The smaller the first threshold value, the smaller the distance between the first color coordinate and the second color coordinate in the color coordinate diagram, the smaller the deviation between the two in the color coordinate diagram, that is, the smaller the color deviation of the two, which is beneficial to improve the display effect. In the embodiments, by the above design, the proportion of light-emitting sub-pixels in white light emitted by different areas at the same observation position can be made consistent, thereby avoiding color deviation.

[0031] The viewing angle mentioned above can be a viewing angle value or a viewing angle range. In an example, the viewing angle includes a normal viewing angle, a side viewing angle, a large viewing angle, and a small viewing angle. The normal viewing angle and the side viewing angle constitute the entire viewing angle range, wherein the normal viewing angle is perpendicular to the display panel. The large viewing angle can include 60°-85°, and the small viewing angle can include 0°-30°. The viewing angle refers to the angle between the line of sight and the normal direction of the display panel.

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Figure 2 For Figure 1 A partial cross-sectional structure diagram of the display module is shown. In terms of the film layer structure, referring to Figure 2 , the display module 10 includes a display panel 11 and a light path adjustment layer located in the light output direction of the display panel 11. The light path adjustment layer is a composite film layer structure, including a first film layer 12 and a second film layer 13, both of which are located in the light output direction of the display panel 11, and the second film layer 13 is located on the side of the first film layer 12 away from the display panel 11.

[0034] The display panel 11 includes a plurality of light-emitting sub-pixels 110, and there is a pixel gap between adjacent light-emitting sub-pixels 110. The display panel 11 can be a self-luminous display panel, such as an organic light-emitting display panel, a quantum dot light-emitting display panel, a micro inorganic light-emitting diode (LED) display panel, and a nano LED display panel, etc. The display panel 11 can also be a non-self-luminous display panel, such as an electrophoretic display panel and an electrowetting display panel. The display panel can be used in large electronic devices such as televisions, electronic billboards, etc., and can also be applied to small and medium-sized electronic devices such as personal computers, laptop computers, vehicle navigation devices, and cameras, etc., and can also be applied to tablet computers, smart phones, personal digital assistants, portable multimedia players, game devices, wristwatch-type electronic devices, etc.

[0035] The light path adjustment layer includes a plurality of light path adjustment structures 120, each light path adjustment structure 120 corresponding to a light-emitting sub-pixel. The light path adjustment structure 120 is used to change the light output path of the light-emitting sub-pixel corresponding thereto. The light rays of the light-emitting sub-pixel 110 corresponding thereto pass through the light path adjustment structure 120 corresponding thereto and change the propagation direction of the light at the light path adjustment structure 120. For example, in the present embodiment, as Figure 2As shown, the first film layer 12 is a patterned film layer. The first film layer 12 includes a plurality of openings 121, which penetrate the first film layer 12 in the light emission direction. Each opening 121 corresponds to a light-emitting sub-pixel 110, and the orthographic projection of the opening 121 on the display panel 11 covers the corresponding light-emitting sub-pixel. The orthographic projection of the first film layer 12 in the light emission direction falls within the pixel gap range. The sidewall of the opening 121 forms an obtuse angle with the light-emitting surface of the light-emitting sub-pixel 110, that is, the cross-sectional area of ​​the opening 121 gradually increases in the light emission direction. The second film layer 13 covers the first film layer 12 and fills the openings 121. The refractive index of the second film layer 13 is greater than that of the first film layer 12. In this case, the interface between the first film layer 12 and the second film layer 13 forms a light path adjustment structure 120. For each opening 121, the path of the emitted light from the light-emitting sub-pixel 110 corresponding to that opening 121 is changed by the sidewall of the opening 121, that is, the light path adjustment structure 120.

[0036] like Figure 2 As shown, the edge of the orthographic projection of the light-emitting sub-pixel 110 in the light-emitting direction and the edge of the orthographic projection of the corresponding optical path adjustment structure 120 in the light-emitting direction have a certain distance D. The first emitted ray L1 of the light-emitting sub-pixel 110 illuminates the corresponding optical path adjustment structure 120 and then exits at a critical angle θ in the orthographic direction. For the curved area, due to the curvature, the viewing angle of the curved area is different from that of the straight area at the same observation position. If the distance D of the curved area is the same as that of the straight area, it will cause color shift. When the distance D of the curved area decreases relative to the distance D of the straight area, the second emitted ray L2 of the light-emitting sub-pixel 110 will illuminate the corresponding optical path adjustment structure 120 and then exit at an orthographic direction, at which time the critical angle decreases. When the critical angle decreases, the light emission from the luminous sub-pixel 110 at the front view increases compared to when it is not reduced. With the total light emission remaining constant, the light emission at the side view decreases. Because of the different light emission levels, the proportion of light emitted by the luminous sub-pixels in the displayed image changes at different viewing angles, thus altering the color coordinates of the displayed image in the color coordinate diagram. In other words, decreasing the spacing D increases the light emission from the luminous sub-pixel 110 at the front view and decreases the light emission at the side view. Conversely, increasing the spacing D decreases the light emission from the luminous sub-pixel 110 at the front view and increases the light emission at the side view.

[0037] based on Figure 2 The light output adjustment principle is illustrated in the present application embodiment, which provides a display module. Figure 3 This is a schematic diagram of the structure of the display module provided in the first embodiment of this application. Figure 4 This is a schematic diagram of the display module provided in the second embodiment of this application. It should be noted that... Figure 3 and Figure 4 The diagram shows the 3D structure corresponding to the display module andFigure 1 Same, but due to Figure 3 and Figure 4 Fine as the pixel level of light emitters, therefore Figure 1 The curvature of the arc region S in the middle is Figure 3 and Figure 4 The effect is not visible in the few light-emitting sub-pixels, presenting a flat structure. In reality, when the number of light-emitting sub-pixels reaches a certain value, the curved area S has a curvature, such as... Figure 1 As shown in the figures. Other figures provided in the embodiments of this application are similar.

[0038] Combination Figure 3 and Figure 4 As shown, the display module includes multiple first light-emitting sub-pixels 111. The arc-shaped region S includes multiple first light-emitting sub-pixels 111, and the flat region L includes multiple first light-emitting sub-pixels 111. In the flat region L, the edge of the orthographic projection of the first light-emitting sub-pixel 111 in the light-emitting direction and the edge of the orthographic projection of the corresponding optical path adjustment structure 120 in the light-emitting direction are separated by a first distance D1. In the arc-shaped region S, the edge of the orthographic projection of the first light-emitting sub-pixel 111 in the light-emitting direction and the edge of the orthographic projection of the corresponding optical path adjustment structure 120 in the light-emitting direction are separated by a second distance D2. The first distance D1 and the second distance D2 are not equal.

[0039] It is worth noting that in this embodiment, in the flat area L, the first spacing D1 is the distance in the prior art where the optical path adjustment structure 120 is provided so that the light output at the positive angle in the flat area reaches the optimal distance. Since different products have different structures and thicknesses, the value of the first spacing D1 is also different. It can be set according to the actual situation. For the solution of this embodiment, the second spacing D2 is adjusted based on the first spacing D1.

[0040] For example, to solve the pinkish tint issue in the curved region S at small viewing angles, it is necessary to reduce the light output of the red emitting sub-pixels in the curved region S at small viewing angles. Based on the principle that increasing the spacing D can reduce the light output of emitting sub-pixels at the normal viewing angle, to reduce the light output of the red emitting sub-pixels at small viewing angles, the spacing D corresponding to the red emitting sub-pixels can be increased. That is, the first emitting sub-pixel is set as the red emitting sub-pixel, and the second spacing D2 is greater than the first spacing D1, such as... Figure 3Alternatively, to solve the small viewing angle pink problem of the arc-shaped area S, the small viewing angle light emitting quantity of the green light emitting sub-pixel and / or the blue light emitting sub-pixel under the small viewing angle of the arc-shaped area S can be increased. According to the principle that the viewing angle light emitting quantity of the light emitting sub-pixel can be increased by reducing the interval D, to increase the small viewing angle light emitting quantity of the green light emitting sub-pixel and / or the blue light emitting sub-pixel under the small viewing angle of the arc-shaped area S, the interval D corresponding to the green light emitting sub-pixel and / or the blue light emitting sub-pixel can be reduced, that is, the first light emitting sub-pixel is set to be the green light emitting sub-pixel and / or the blue light emitting sub-pixel, and the second interval D2 is less than the first interval D1, as shown in FIG. 6B. Figure 4

[0041] For example, to solve the large viewing angle cyan problem of the arc-shaped area S, the light emitting quantity of the green light emitting sub-pixel under the large viewing angle of the arc-shaped area S needs to be reduced. According to the principle that the side viewing angle light emitting quantity of the light emitting sub-pixel can be reduced by reducing the interval D, to reduce the light emitting quantity of the green light emitting sub-pixel under the large viewing angle, the interval D corresponding to the green light emitting sub-pixel can be reduced, that is, the first light emitting sub-pixel is set to be the green light emitting sub-pixel, and the second interval D2 is less than the first interval D1, as shown in FIG. 6B. Figure 4 Alternatively, to solve the large viewing angle cyan problem of the arc-shaped area S, the light emitting quantity of the red light emitting sub-pixel and / or the blue light emitting sub-pixel under the large viewing angle of the arc-shaped area S needs to be increased. According to the principle that the side viewing angle light emitting quantity of the light emitting sub-pixel can be increased by increasing the interval D, to increase the light emitting quantity of the red light emitting sub-pixel and / or the blue light emitting sub-pixel under the large viewing angle, the interval D corresponding to the red light emitting sub-pixel and / or the blue light emitting sub-pixel can be increased, that is, the first light emitting sub-pixel is set to be the red light emitting sub-pixel and / or the blue light emitting sub-pixel, and the second interval D2 is greater than the first interval D1, as shown in FIG. 6B. Figure 3

[0042] ​​According to the display module provided in this embodiment, the display module includes a display panel and a light path adjustment layer located in the light emission direction of the display panel. The display panel includes multiple light-emitting sub-pixels, and the light path adjustment layer includes multiple light path adjustment structures. Each light path adjustment structure corresponds to at least one light-emitting sub-pixel, that is, each light path adjustment structure is used to adjust the emitted light path of the at least one light-emitting sub-pixel. The emitted light path of the at least one light-emitting sub-pixel passes through the light path adjustment structure, and light path adjustment is performed at the light path adjustment structure. The display module includes an arc-shaped area and a flat area, and the multiple light-emitting sub-pixels include multiple first light-emitting sub-pixels. In the flat area, the edge of the orthographic projection of the first light-emitting sub-pixel in the light emission direction and the edge of the orthographic projection of the corresponding light path adjustment structure in the light emission direction are separated by a first distance. In the arc-shaped area, the edge of the orthographic projection of the first light-emitting sub-pixel in the light emission direction and the edge of the orthographic projection of the corresponding light path adjustment structure in the light emission direction are separated by a second distance, and the first distance and the second distance are not equal. By reasonably selecting the first luminous sub-pixel and setting the size relationship between the first spacing and the second spacing, the proportion of the first luminous sub-pixel in white light in the arc area and the proportion of the first luminous sub-pixel in white light in the straight area can be the same at the same observation position, thereby solving the color shift problem.

[0043] Figure 5 This is a partial top view of the display module provided in the third embodiment of this application. Figure 5 As shown, in the display module 50, the first film layer 12 is as follows: Figure 5 The shaded area is shown in the diagram. Multiple luminous sub-pixels 110 include a first luminous sub-pixel 111, a second luminous sub-pixel 112, and a third luminous sub-pixel 113, each a different color. In the flat region L, the edge of the orthographic projection of the second luminous sub-pixel 112 in the light-emitting direction and the edge of the orthographic projection of the corresponding optical path adjustment structure 120 in the light-emitting direction are separated by a third distance D3. In the arc-shaped region S, the edge of the orthographic projection of the second luminous sub-pixel 112 in the light-emitting direction and the edge of the orthographic projection of the corresponding optical path adjustment structure 120 in the light-emitting direction are separated by a fourth distance D4. The third distance D3 and the fourth distance D4 may be equal or unequal. In the flat region L, the edge of the orthographic projection of the third luminous sub-pixel 113 in the light-emitting direction and the edge of the orthographic projection of the corresponding optical path adjustment structure 120 in the light-emitting direction are separated by a fifth distance D5. In the arc-shaped region S, the edge of the orthographic projection of the third light-emitting sub-pixel 113 in the light-emitting direction and the edge of the orthographic projection of the corresponding optical path adjustment structure 120 in the light-emitting direction are separated by a sixth spacing D6. The fifth spacing D5 and the sixth spacing D6 may be equal or unequal.

[0044] It should be noted that, in Figure 4It is only exemplary that the first interval D1 is greater than the second interval D2. The first interval D1 can also be set to be less than the second interval D2.

[0045] Figure 6 A top view structure schematic diagram of a display module is provided for the fourth embodiment of the present application. As shown in the figure, Figure 6 In the display module 60, one light path adjustment structure 120 corresponds to multiple light emitting sub-pixels 110, i.e., multiple light emitting sub-pixels 110 are located in the same opening 121 of the first film layer 12. For example, one light path adjustment structure 120 corresponds to the first light emitting sub-pixel 111, the second light emitting sub-pixel 112, and the third light emitting sub-pixel 113, which constitute a pixel unit. In the flat area L, the first interval D1, the third interval D3, and the fifth interval D5 are all equal. In the arc-shaped area S, the second interval D2 is less than the fourth interval D4, and the fourth interval D4 is equal to the sixth interval D6. The first interval D1, the third interval D3, and the fifth interval D5 in the flat area L are all equal to the fourth interval D4 and the sixth interval D6 in the arc-shaped area S.

[0046] It should be noted that the intervals mentioned in the present embodiment, including the first interval D1, the second interval D2, the third interval D3, the fourth interval D4, the fifth interval D5, and the sixth interval D6, are all minimum intervals. For example, taking the second interval D2 as an example, it indicates the interval between the projection edge of the first light emitting sub-pixel 111 in the arc-shaped area S in the light emitting direction and the projection edge of the light path adjustment structure 120 in the light emitting direction, from which Figure 6 It can be seen from the figure that the intervals between different positions of the edge of the projection of the first light emitting sub-pixel 111 and the edge of the projection of the light path adjustment structure 120 are not equal. For example, the interval between the left edge of the projection of the first light emitting sub-pixel 111 and the edge of the projection of the light path adjustment structure 120 is much greater than the interval between the right edge of the projection of the first light emitting sub-pixel 111 and the edge of the projection of the light path adjustment structure 120. In this case, the interval between the right edge of the projection of the first light emitting sub-pixel 111 and the edge of the projection of the light path adjustment structure 120 is taken as the second interval D2.

[0047] Figure 7 A top view structure schematic diagram of a display module is provided for the fifth embodiment of the present application. As shown in the figure, Figure 7 In the display module 70, the number of light emitting sub-pixels 110 corresponding to different light path adjustment structures is different, some light path adjustment structures correspond to one light emitting sub-pixel 110, and some light path adjustment structures correspond to multiple light emitting sub-pixels 110.

[0048] For example, the light path adjustment structure of the arc-shaped area S includes a first light path adjustment structure 122 and a second light path adjustment structure 123. The first light path adjustment structure 122 corresponds to one light-emitting sub-pixel 110, for example, the first light-emitting sub-pixel 111, that is, the first light-emitting sub-pixel 111 is located in an opening 121 of the first film layer 12. The second light path adjustment structure 123 corresponds to multiple light-emitting sub-pixels, for example, the second light-emitting sub-pixel 112 and the third light-emitting sub-pixel 113, that is, the second light-emitting sub-pixel 112 and the third light-emitting sub-pixel 113 are located in the same opening 121 of the first film layer 12. The light path adjustment structure 120 of the flat area L includes a third light path adjustment structure 124, which corresponds to three light-emitting sub-pixels, for example, the first light-emitting sub-pixel 111, the second light-emitting sub-pixel 112, and the third light-emitting sub-pixel 113, all of which are located in the same opening 121 of the first film layer 12.

[0049] Figure 8 A partial cross-sectional structure schematic diagram of a display module is provided for the sixth embodiment of the present application. As shown in Figure 7 In the display module 80, the second interval D2 gradually changes in the direction from the flat area L to the arc-shaped area S. For example, as shown in Figure 8 The first interval D1 is greater than the second interval D2, and the second interval D2 gradually decreases in the direction from the flat area L to the arc-shaped area S. For another example, the first interval D1 is less than the second interval D2, and the second interval D2 gradually increases in the direction from the flat area L to the arc-shaped area S.

[0050] The farther away from the flat area L, the greater the curvature of the cover plate, and the more serious the color deviation problem. Therefore, by setting the second interval D2 to gradually change, the curvature of the cover plate can be adapted, and the display effect can be further improved.

[0051] Figure 9 A partial cross-sectional structure schematic diagram of a display module is provided for the seventh embodiment of the present application. As shown in Figure 9 The difference between the display module 90 and the display module provided in any of the above embodiments is that, in the display module 90, the light path adjustment layer includes a first film layer and a second film layer, the first film layer includes multiple light path adjustment units 125 that are independent of each other, that is, each light path adjustment unit 125 is arranged separately, and the orthographic projection of each light path adjustment unit 125 in the light-emitting direction covers one light-emitting sub-pixel 110. The second film layer covers the first film layer and fills the gaps between the light path adjustment units, and the refractive index of the first film layer is greater than that of the second film layer 13. The interface between the first film layer 12 and the second film layer 13 forms the light path adjustment structure 120, and an obtuse angle is formed between the side wall of the light path adjustment unit 125 and the light-emitting surface of the light-emitting sub-pixel 110, that is, in the light-emitting direction, the cross-sectional area of the light path adjustment unit 125 gradually decreases, and the light path adjustment structure is the interface between the first film layer and the second film layer.

[0052] The display module 90 provided by the embodiment also has the same light output adjustment rule as the display module shown in the figures, i.e., reducing the interval D can increase the normal viewing angle light output of the light emitting sub-pixel 110 and reduce the side viewing angle light output. Conversely, increasing the interval D can reduce the normal viewing angle light output of the light emitting sub-pixel 110 and increase the side viewing angle light output. Therefore, the size relationship of the interval D corresponding to the light emitting sub-pixels of the same color in the arc-shaped area S and the flat area L can be reasonably set according to actual needs. For specific details, refer to the corresponding embodiments described above, which will not be described here again. Figure 2 The display module provided by any of the above embodiments, the first viewing angle light output and the second viewing angle light output are not equal, which is realized by setting the first interval D1 and the second interval D2 not equal. The present embodiment also provides another scheme for realizing that the first viewing angle light output and the second viewing angle light output are not equal, i.e., setting the included angle between the side surface of the light path adjustment structure and the display panel not equal. The implementation scheme will be specifically described below in combination with the drawings.

[0053] The display module provided by any of the above embodiments, the first viewing angle light output and the second viewing angle light output are not equal, which is realized by setting the first interval D1 and the second interval D2 not equal. The present embodiment also provides another scheme for realizing that the first viewing angle light output and the second viewing angle light output are not equal, i.e., setting the included angle between the side surface of the light path adjustment structure and the display panel not equal. The implementation scheme will be specifically described below in combination with the drawings.

[0054] Figure 10 A partial cross-sectional structure schematic diagram of the display module provided by the eighth embodiment of the present application is shown in the figure. Figure 10 As shown in the figure, in the display module 100, the light path adjustment structure 120 includes an interface N which is arranged obliquely to the display panel 11. In the flat area L, the interface of the light path adjustment structure 120 corresponding to the first light emitting sub-pixel 111 and the display panel 11 form a first acute angle θ4. In the arc-shaped area S, the interface of the light path adjustment structure 120 corresponding to the first light emitting sub-pixel 111 and the display panel 11 form a second acute angle θ5, and the first acute angle θ4 and the second acute angle θ5 are not equal.

[0055] Similarly, in the flat area L of the present embodiment, the first acute angle θ4 is the angle at which the light path adjustment structure 120 is provided in the prior art to make the normal viewing angle light output in the flat area optimal. Since different products have different structures and thicknesses, the value of the first acute angle θ4 is also different, which can be set according to actual conditions. For the scheme of the present embodiment, the second acute angle θ5 is adjusted based on the first acute angle θ4.

[0056] For example, the first acute angle θ4 is smaller than the second acute angle θ5. In this case, the influence on the light output of the light emitting sub-pixel 110 in the light path adjustment layer 12 is the same as the influence of the first interval D1 being greater than the second interval D2 on the light output of the light emitting sub-pixel 110. For another example, the first acute angle θ4 is greater than the second acute angle θ5. In this case, the influence on the light output of the light emitting sub-pixel 110 in the light path adjustment layer 12 is the same as the influence of the first interval D1 being smaller than the second interval D2 on the light output of the light emitting sub-pixel 110. For specific influence results, refer to the embodiments shown in Figure 2 and Figure 3 which will not be described here again.

[0057] In one embodiment, the second acute angle θ5 is gradually changed in the direction from the flat area L to the arc area S. For example, the first acute angle θ4 is greater than the second acute angle θ5, and the second acute angle θ5 gradually decreases in the direction from the flat area L to the arc area S. For another example, the first acute angle θ4 is less than the second acute angle θ5, and the second acute angle θ5 gradually increases in the direction from the flat area L to the arc area S.

[0058] In one embodiment, the plurality of light-emitting sub-pixels further comprises a plurality of second light-emitting sub-pixels. In the flat area L, the side of the light path adjustment structure 120 corresponding to the second light-emitting sub-pixel and the display panel 11 form a third acute angle. In the arc area, the side of the light path adjustment structure 120 corresponding to the second light-emitting sub-pixel and the display panel 11 form a fourth acute angle, and the third acute angle is equal to the fourth acute angle. Further, the plurality of light-emitting sub-pixels can further comprise a plurality of third light-emitting sub-pixels. In the flat area, the side of the light path adjustment structure 120 corresponding to the third light-emitting sub-pixel and the display panel 11 form a fifth acute angle. In the arc area, the side of the light path adjustment structure 120 corresponding to the third light-emitting sub-pixel and the display panel 11 form a sixth acute angle, and the fifth acute angle is equal to the sixth acute angle.

[0059] In one embodiment, the plurality of light path adjustment structures comprises a first light path adjustment structure and a second light path adjustment structure, and the number of light-emitting sub-pixels corresponding to the first light path adjustment structure and the second light path adjustment structure is not equal.

[0060] In one embodiment, the first light-emitting sub-pixel and the second light-emitting sub-pixel correspond to the same light path adjustment structure.

[0061] In one embodiment, the first light-emitting sub-pixel comprises a green light-emitting sub-pixel, and the first acute angle θ4 is less than the second acute angle θ5.

[0062] Alternatively, in one embodiment, the first light-emitting sub-pixel comprises a red light-emitting sub-pixel and / or a blue light-emitting sub-pixel, and the first acute angle θ4 is greater than the second acute angle θ5; thereby solving the problem of large viewing angle blue shift existing in the arc area S.

[0063] In another embodiment, the first light-emitting sub-pixel comprises a red light-emitting sub-pixel, and the first acute angle θ4 is greater than the second acute angle θ5;

[0064] Alternatively, in one embodiment, the first light-emitting sub-pixel comprises a green light-emitting sub-pixel and / or a blue light-emitting sub-pixel, and the first acute angle θ4 is less than the second acute angle θ5; thereby solving the problem of small viewing angle pink shift existing in the arc area S.

[0065] The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the forms disclosed herein. Although various example aspects and embodiments have been discussed above, those of ordinary skill in the art will appreciate a variety of modifications, alternatives, permutations, additions, and sub-combinations, which fall within the scope of the application.

Claims

1. A display module, characterized by The display module comprises: a display panel having a flat area and an arc area adjacent to the flat area and having an arc surface; a light path adjusting layer sequentially stacked on the flat area and the arc area of the display panel; wherein a light-emitting sub-pixel located in the flat area has a first color coordinate after passing through the light path adjusting layer, and a light-emitting sub-pixel located in the arc area has a second color coordinate after passing through the light path adjusting layer, the first color coordinate and the second color coordinate have a distance in a color coordinate diagram less than or equal to a first threshold value; the light path adjusting layer comprises a plurality of light path adjusting structures, each light path adjusting structure corresponds to at least one light-emitting sub-pixel, and the number of light-emitting sub-pixels corresponding to each light path adjusting structure is different; the light path adjusting layer comprises a first film layer and a second film layer, and the second film layer is located on the side of the first film layer away from the display panel, the first film layer comprises a plurality of openings, the included angle between the side wall of the opening and the light-out surface is obtuse, and the orthogonal projection of the opening in the light-out direction covers the corresponding light-emitting sub-pixel; the second film layer covers the first film layer and fills the opening; the refractive index of the second film layer is greater than that of the first film layer, and the light path adjusting structure is the interface between the first film layer and the second film layer; in the flat area, the interface of the light path adjusting structure corresponding to the first light-emitting sub-pixel and the display panel form a first acute angle; in the arc area, the interface of the light path adjusting structure corresponding to the first light-emitting sub-pixel and the display panel form a second acute angle, and the first acute angle and the second acute angle are not equal; the first light-emitting sub-pixel is a red light-emitting sub-pixel, and the first acute angle is greater than the second acute angle; and / or the first light-emitting sub-pixel comprises a green light-emitting sub-pixel, and the first acute angle is smaller than the second acute angle.

2. The display module of claim 1, wherein, the light path adjusting layer comprises a first film layer and a second film layer, wherein the first film layer independently provides a plurality of light path adjusting units, each light path adjusting unit covers a light-emitting sub-pixel in the orthogonal projection in the light-out direction, and the side wall of the light path adjusting unit and the light-out surface form an obtuse angle, the second film layer covers the first film layer and fills the gap between the light path adjusting units; and the refractive index of the first film layer is greater than that of the second film layer, and the light path adjusting structure is the interface between the first film layer and the second film layer.

3. The display module of claim 2, wherein, the light-emitting sub-pixel comprises a first light-emitting sub-pixel; in the flat area, the edge of the orthogonal projection of the first light-emitting sub-pixel in the light-out direction and the edge of the orthogonal projection of the light path adjusting structure corresponding thereto in the light-out direction are separated by a first distance; in the arc area, the edge of the orthogonal projection of the first light-emitting sub-pixel in the light-out direction and the edge of the orthogonal projection of the light path adjusting structure corresponding thereto in the light-out direction are separated by a second distance, and the first distance and the second distance are not equal.

4. The display module of claim 3, wherein, The light-emitting sub-pixel further comprises a second light-emitting sub-pixel; in the flat area, an edge of a projection of the second light-emitting sub-pixel in the light-emitting direction and an edge of a projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are apart from each other by a third distance; in the arc area, an edge of a projection of the second light-emitting sub-pixel in the light-emitting direction and an edge of a projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are apart from each other by a fourth distance, the third distance and the fourth distance being equal; The light-emitting sub-pixel further comprises a third light-emitting sub-pixel, an edge of a projection of the third light-emitting sub-pixel in the light-emitting direction and an edge of a projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are apart from each other by a fifth distance, an edge of a projection of the third light-emitting sub-pixel in the light-emitting direction and an edge of a projection of the light path adjusting structure corresponding to the edge in the light-emitting direction are apart from each other by a sixth distance; The fifth distance and the sixth distance are equal.

5. The display module of claim 3, wherein, The first light-emitting sub-pixel is a red light-emitting sub-pixel, the first distance is smaller than the second distance; and / or The first light-emitting sub-pixel comprises a green light-emitting sub-pixel, the second distance is smaller than the first distance.

6. The display module of claim 3, wherein, In a direction from the flat area to the arc area, when the second distance is smaller than the first distance, the second distance gradually decreases; when the second distance is greater than the first distance, the second distance gradually increases.

7. A display device, characterized by comprising: The display module comprises any one of claims 1-6. The display module comprises any one of claims 1-6.

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