Splicing display module and splicing screen

Abstract

The invention provides a spliced display module and a spliced screen, the spliced display module comprises at least two first display panels and a second display panel, the two adjacent first display panels are spliced to form a splicing area, and the second display panel is arranged corresponding to the splicing area. A first shading part is arranged on one side of a first light-emitting device on a second display panel, the first shading part can shield large-view-angle light emission of the first light-emitting device, and then large-view-angle light emission of a first sub-pixel contributing blue light is limited, so that the chromaticity of the large view angle of the second display panel in the first direction is adjusted, and the chromaticity of the large view angle of the second display panel in the second direction is adjusted. The change rule of the chromaticity difference of the large viewing angle of the first display panel in the first direction along with the viewing angle is matched, and then the chromaticity difference of the large viewing angle between the second display panel and the first display panel is reduced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a spliced ​​display module and a spliced ​​screen. Background Art

[0002] Liquid Crystal Display (LCD) devices are the most widely used display products in the market. Their production technology is very mature, the product yield is high, the production cost is relatively low, and the market acceptance is high. At present, the demand for various ultra-large display screens is increasing day by day, and their applications are becoming more and more extensive. Due to technological limitations, the integrated production process of ultra-large display screens is difficult and costly. Therefore, splicing screen technology is an effective way to achieve large-scale display devices. For example, two liquid crystal display devices are spliced ​​together to form a spliced ​​screen, but the resulting spliced ​​screen has a splicing gap, which affects the visual effect.

[0003] In order to solve the gap of the spliced ​​screen, a light emitting diode (LED) light bar can be set at the gap to eliminate the gap. However, due to the different light emitting mechanisms of LED and LCD, there is a large difference in viewing angle between the LED light bar and the liquid crystal display device, making the LED light bar bluer than the liquid crystal display device at a large viewing angle. Summary of the invention

[0004] The present application provides a spliced ​​display module and a spliced ​​screen to improve the technical problem of a large viewing angle difference between a light emitting diode light bar and a liquid crystal display device.

[0005] To solve the above problems, the technical solutions provided by this application are as follows:

[0006] The present application provides a spliced ​​display module, which includes:

[0007] At least two first display panels, two adjacent first display panels are spliced ​​together to form a splicing area;

[0008] A second display panel is arranged corresponding to the splicing area, the second display panel comprises a driving substrate and at least one light-emitting pixel arranged on the driving substrate, the light-emitting pixel comprises a first sub-pixel that contributes blue light, and the first sub-pixel comprises a first light-emitting device;

[0009] Among them, the second display panel also includes a shading member arranged on the driving substrate, and the shading member includes a first shading portion arranged on one side of the first light-emitting device, the first shading portion and the first light-emitting device are alternately arranged in a first direction, and the first shading portion limits the light emission angle of the first light-emitting device in the first direction.

[0010] In the spliced ​​display module provided in the embodiment of the present application, the light-emitting pixel further includes a second sub-pixel contributing green light and a third sub-pixel contributing red light, the second sub-pixel includes a second light-emitting device, the third sub-pixel includes a third light-emitting device, the first light-emitting device, the second light-emitting device and the third light-emitting device are arranged in sequence in a second direction, and the second direction is arranged to intersect with the first direction;

[0011] The light shielding member further includes a second light shielding portion located at the other side of the first light emitting device. In the first direction, the first light emitting device is located between the first light shielding portion and the second light shielding portion.

[0012] In the spliced ​​display module provided in an embodiment of the present application, the shading member also includes a third shading portion arranged on one side of the second light-emitting device, the third shading portion and the second light-emitting device are arranged alternately in the first direction, and the third shading portion is arranged corresponding to the first shading portion in the second direction.

[0013] In the spliced ​​display module provided in an embodiment of the present application, the shading member also includes a fourth shading portion arranged on the other side of the second light-emitting device. In the first direction, the second light-emitting device is located between the third shading portion and the fourth shading portion, and the fourth shading portion is arranged corresponding to the second shading portion in the second direction.

[0014] In the spliced ​​display module provided in the embodiment of the present application, the third light shielding portion has the same height as the fourth light shielding portion, the second light shielding portion has the same height as the first light shielding portion, and the height of the first light shielding portion is less than the height of the third light shielding portion.

[0015] In the spliced ​​display module provided in the embodiment of the present application, there is a first interval between the first light-shielding portion and the first light-emitting device, there is a second interval between the second light-shielding portion and the first light-emitting device, there is a third interval between the third light-shielding portion and the second light-emitting device, and there is a fourth interval between the fourth light-shielding portion and the second light-emitting device, and the first interval, the second interval, the third interval and the fourth interval are all greater than or equal to 0um and less than or equal to 90um.

[0016] In the spliced ​​display module provided in the embodiment of the present application, in the second direction, the length of the first light-shielding portion is greater than or equal to the length of the first light-emitting device, the length of the second light-shielding portion is greater than or equal to the length of the first light-emitting device, the length of the third light-shielding portion is greater than or equal to the length of the second light-emitting device, and the length of the fourth light-shielding portion is greater than or equal to the length of the second light-emitting device.

[0017] In the spliced ​​display module provided in the embodiment of the present application, the light-emitting pixel further includes a second sub-pixel contributing green light and a third sub-pixel contributing red light, the second sub-pixel includes a second light-emitting device, the third sub-pixel includes a third light-emitting device, and the first light-emitting device, the second light-emitting device and the third light-emitting device are arranged in sequence in the first direction;

[0018] The shading member further includes a third shading portion disposed on one side of the second light emitting device, and the third shading portion and the first shading portion are both located between the first light emitting device and the second light emitting device.

[0019] In the spliced ​​display module provided in the embodiment of the present application, the first light shielding portion and the third light shielding portion are integrally arranged.

[0020] In the spliced ​​display module provided in the embodiment of the present application, the height of the shading member is less than or equal to the height of the first light-emitting device.

[0021] In the spliced ​​display module provided in the embodiment of the present application, the second display panel further includes an anti-peep film arranged on a side of the first light-emitting device away from the driving substrate.

[0022] An embodiment of the present application further provides a spliced ​​screen, which includes the spliced ​​display module described in one of the aforementioned embodiments.

[0023] The beneficial effects of the present application are as follows: in the spliced ​​display module and the spliced ​​screen provided by the present application, the spliced ​​display module includes at least two first display panels and one second display panel, two adjacent first display panels are spliced ​​together to form a splicing area, the second display panel is arranged corresponding to the splicing area, a first shading portion is arranged on one side of the first light-emitting device on the second display panel, the first shading portion and the first light-emitting device are arranged alternately in the first direction, the first shading portion can block the wide-angle light emission of the first light-emitting device, thereby limiting the wide-angle light emission of the first sub-pixel contributing blue light, so as to adjust the chromaticity of the second display panel at a wide angle in the first direction, so as to match the law of change of the chromaticity difference of the first display panel at a wide angle in the first direction with the viewing angle, thereby reducing the large viewing angle chromaticity difference between the second display panel and the first display panel, and improving the problem that the large viewing angle chromaticity difference between the light-emitting diode light bar and the liquid crystal display device causes the light-emitting diode light bar to be bluish relative to the liquid crystal display device at a wide viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A schematic diagram showing the comparison of the chromaticity difference viewing angle curves of LED and LCD is shown.

[0026] Figure 2 A schematic diagram of a planar structure of a spliced ​​display module provided in an embodiment of the present application.

[0027] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the M-M' direction.

[0028] Figure 4 for Figure 2 Schematic diagram of the local detailed structure of the second display panel.

[0029] Figure 5 for Figure 2 Schematic diagram of the brightness of the second display panel at various viewing angles.

[0030] Figure 6 A second planar structural schematic diagram of the arrangement of the shading elements provided in an embodiment of the present application.

[0031] Figure 7 A third planar structural schematic diagram of the arrangement of the shading elements provided in the embodiment of the present application.

[0032] Figure 8 A fourth planar structural schematic diagram of the shading element arrangement provided in an embodiment of the present application.

[0033] Fig. 9 A fifth planar structural schematic diagram of the arrangement of shading elements provided in an embodiment of the present application.

[0034] Fig.10 A sixth planar structural schematic diagram of the arrangement of shading elements provided in an embodiment of the present application.

[0035] Fig.11 for Fig.10 Detailed structural diagram of K in the figure.

[0036] Fig.12 for Fig.11 Schematic diagram of the cross-sectional structure along the M-M' and N-N' directions.

[0037] Fig.13A schematic diagram comparing chromaticity difference viewing angle curves of the second display panel and the first display panel provided in an embodiment of the present application.

[0038] Fig.14 A schematic flow chart of a method for improving color deviation of a spliced ​​display module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in the present application, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present application, rather than to limit the present application. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and regions is exaggerated for clear understanding and ease of description. That is, the size and thickness of each component shown in the drawings are arbitrarily shown, but the present application is not limited to this.

[0040] In view of the large difference in viewing angle between the LED light bar and the liquid crystal display device, which causes the LED light bar to be bluer than the liquid crystal display device at a large viewing angle, the inventor found in the research: Figure 1 , Figure 1 The schematic diagram of the comparison of the chromaticity difference viewing angle curves of LED and LCD is shown in Figure 1 In the figure, curve A represents the trend of the chromaticity difference Δx of LCD with the change of viewing angle, curve B represents the trend of the chromaticity difference Δy of LCD with the change of viewing angle, curve C represents the trend of the chromaticity difference Δx of LED with the change of viewing angle, and curve D represents the trend of the chromaticity difference Δy of LED with the change of viewing angle, where Figure 1 The horizontal axis represents the viewing angle, and the vertical axis represents the value of the chromaticity difference. The chromaticity difference refers to the difference in chromaticity at different viewing angles relative to 0°. For example, the chromaticity difference at a 60° viewing angle refers to the difference between the chromaticity at a 60° viewing angle and the chromaticity at 0°. The chromaticity difference is also the chromaticity difference or color deviation.

[0041] from Figure 1 It can be seen that as the viewing angle of LCD increases, the chromaticity difference Δx gradually increases, and the chromaticity difference Δy first increases and then decreases, while as the viewing angle of LED increases, the chromaticity difference Δx first increases and then decreases, and the chromaticity difference Δy gradually increases. The trend of the chromaticity difference of LED changing with the viewing angle is inconsistent with that of LCD, resulting in a large chromaticity difference between the LED light bar and the liquid crystal display device at the same viewing angle, making the LED light bar bluer than the liquid crystal display device at a large viewing angle.

[0042] To this end, the inventor of the present application proposes a spliced ​​display module, a method for improving color deviation thereof, and a spliced ​​screen.

[0043] Please refer to Figures 1 to 5 , Figure 2 A schematic diagram of a planar structure of a spliced ​​display module provided in an embodiment of the present application, Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the M-M' direction, Figure 4 for Figure 2 A schematic diagram of a partial detailed structure of the second display panel, Figure 5 for Figure 2 Schematic diagram of brightness of the second display panel at various viewing angles. Figure 2 The splicing display module 100 includes at least two first display panels 10 and at least one second display panel 20. Two adjacent first display panels 10 are spliced ​​together to form a splicing area PD. The second display panel 20 is arranged corresponding to the splicing area PD. The second display panel 20 is arranged in the splicing area PD so that the splicing area PD can display images, thereby eliminating the splicing gap of the splicing display module 100 and improving the visual display effect.

[0044] The first display panel 10 includes a liquid crystal display panel, etc., and the second display panel 20 includes a light-emitting diode (LED) display panel, a micro light-emitting diode (Micro-LED) display panel, or a sub-millimeter light-emitting diode (Mini-LED) display panel. In the embodiment of the present application, the first display panel 10 is a liquid crystal display panel, and the second display panel 20 is a micro-LED display panel, but the present application is not limited to this. In addition, Figure 2 The example shows that two first display panels 10 are spliced ​​together, but the present application is not limited to this. For example, the spliced ​​display module 100 in the present application may also include 4, 6, 8 or more first display panels 10 spliced ​​together, and a second display panel 20 is arranged between every two first display panels 10 spliced ​​together.

[0045] Reference Figure 3 The second display panel 20 includes a driving substrate 21 and at least one light-emitting pixel P arranged on the driving substrate 21, the light-emitting pixel P includes a first sub-pixel SP1 contributing blue light, a second sub-pixel SP2 contributing green light, and a third sub-pixel SP3 contributing red light, the first sub-pixel SP1 includes a first light-emitting device 221, the second sub-pixel SP2 includes a second light-emitting device 222, and the third sub-pixel SP3 includes a third light-emitting device 223.

[0046] The driving substrate 21 is provided with a driving circuit, and the driving circuit is used to drive the corresponding light-emitting device to emit light. The first light-emitting device 221, the second light-emitting device 222, and the third light-emitting device 223 can emit light of the same color or emit light of different colors respectively. For example, the first light-emitting device 221, the second light-emitting device 222, and the third light-emitting device 223 can all be blue light LED chips, or the first light-emitting device 221, the second light-emitting device 222, and the third light-emitting device 223 can be a blue light LED chip, a green light LED chip, and a red light LED chip respectively.

[0047] The second display panel 20 also includes a shading member 23 arranged on the driving substrate 21, and the shading member 23 includes a first shading portion 231 arranged on one side of the first light-emitting device 221. The first shading portion 231 and the first light-emitting device 221 are alternately arranged in the first direction X. The first shading portion 231 can block the wide-viewing angle light of the first light-emitting device 221, thereby limiting the wide-viewing angle light of the first sub-pixel SP1 that contributes blue light, so as to adjust the chromaticity of the second display panel 20 at a wide viewing angle in the first direction X, so as to match the law of change of the chromaticity difference of the first display panel 10 at a wide viewing angle in the first direction X with the viewing angle, thereby reducing the large viewing angle chromaticity difference between the second display panel 20 and the first display panel 10, and improving the problem that the large viewing angle chromaticity difference between the light-emitting diode light bar and the liquid crystal display device causes the light-emitting diode light bar to be blue relative to the liquid crystal display device at a wide viewing angle.

[0048] Among them, the first direction X is a horizontal direction. Of course, in some other embodiments, the first direction X can also be a vertical direction. Since the horizontal viewing angle range is usually larger than the vertical viewing angle range, the color deviation in the horizontal viewing angle direction is larger than the color deviation in the vertical viewing angle direction. Therefore, the embodiment of the present application preferably improves the color deviation in the horizontal viewing angle direction, that is, the first direction X is preferably a horizontal direction, but the present application is not limited thereto.

[0049] Specifically, continue to refer to Figure 3 The first display panel 10 includes a first substrate 11 and a second substrate 12 arranged opposite to each other, a liquid crystal layer 14 arranged between the first substrate 11 and the second substrate 12, and a sealant 13 surrounding the liquid crystal layer 14. The first substrate 11, the liquid crystal layer 14, and the second substrate 12 are arranged in sequence in the thickness direction Z of the spliced ​​display module 100. The first substrate 11 is an array substrate, and the second substrate 12 is a color filter substrate. The first display panel 10 also includes a first polarizer 15 arranged on the side of the second substrate 12 away from the first substrate 11, and a second polarizer 16 arranged on the side of the first substrate 11 away from the second substrate 12.

[0050] The second display panel 20 further includes an encapsulation layer 24 covering the first light emitting device 221, the second light emitting device 222, the third light emitting device 223 and the light shielding member 23, and the encapsulation layer 24 is used to protect each light emitting device. The material of the encapsulation layer 24 includes epoxy resin, etc. The material of the light shielding member 23 includes a material with a light shielding function, such as light shielding ink, etc.

[0051] In the thickness direction Z of the spliced ​​display module 100, the height of the shading member 23 is less than or equal to the height of the first light emitting device 221, so as to avoid excessively affecting the front emitted light of the first light emitting device 221. Of course, the present application is not limited thereto, and in some other embodiments, when the color cast difference between the second display panel 20 and the first display panel 10 is large, the height of the shading member 23 may also be greater than the height of the first light emitting device 221.

[0052] Optionally, the second display panel 20 also includes an anti-peep film 25 arranged on the side of the first light-emitting device 221 away from the driving substrate 21. For example, the anti-peep film 25 can be arranged on the side of the encapsulation layer 24 away from the driving substrate 21. The anti-peep film 25 is used to adjust the brightness of the second display panel 20 at a wide viewing angle.

[0053] In one embodiment, referring to Figure 3 and Figure 4 The first light-emitting device 221, the second light-emitting device 222 and the third light-emitting device 223 are arranged in sequence in the first direction X, a plurality of the first light-emitting devices 221 are arranged at intervals in the second direction Y, a plurality of the second light-emitting devices 222 are arranged at intervals in the second direction Y, a plurality of the third light-emitting devices 223 are arranged at intervals in the second direction Y, and the second direction Y is arranged to intersect with the first direction X. For example, when the first direction X is a horizontal direction, the second direction Y is a vertical direction.

[0054] It should be noted that in the planar arrangement diagram of the light emitting device of the present application, Figure 4 In order to clearly distinguish the light-emitting devices, the first light-emitting device 221, the second light-emitting device 222 and the third light-emitting device 223 are respectively indicated as B, G and R in the figure.

[0055] Reference Figure 4, the first light-shielding portion 231 is provided on one side of the first light-emitting device 221. The light-shielding member 23 is not provided on the side of the first light-emitting device 221 close to the third light-emitting device 223 to avoid affecting the light emission of the third light-emitting device 223. The light-shielding member 23 is not provided on the peripheral side of the third light-emitting device 223 to avoid affecting the light emission of the third light-emitting device 223. The first light-shielding portion 231 is located on the side of the first light-emitting device 221 close to the second light-emitting device 222, and covers the side surface of the first light-emitting device 221 close to the second light-emitting device 222 to block the side light emission of the first light-emitting device 221, which can reduce the wide-viewing angle light emission of the first sub-pixel SP1. Figure 5 As shown, Figure 5 The solid line in the middle represents the brightness change of the first sub-pixel SP1 at various viewing angles after the light shielding member 23 is provided. Figure 5 The middle dotted line represents the brightness change of the first sub-pixel SP1 at various viewing angles when the light shielding member 23 is not provided. Figure 5 It can be clearly seen from the figure that after the light shielding member 23 is provided, the brightness of the first sub-pixel SP1 at each viewing angle is reduced.

[0056] In this way, when the first sub-pixel SP1 is mixed with the second sub-pixel SP2 and the third sub-pixel SP3, the proportion of the first sub-pixel SP1 is reduced, and the proportion of the second sub-pixel SP2 and the third sub-pixel SP3 is increased, thereby achieving a color point tuning effect to adjust the chromaticity of the second display panel 20 at a large viewing angle in the first direction X to match the law of change of the chromaticity difference of the first display panel 10 at a large viewing angle in the first direction X with the viewing angle, thereby reducing the large viewing angle chromaticity difference between the second display panel 20 and the first display panel 10.

[0057] Optionally, the length of the shading member 23 in the second direction Y is greater than or equal to the length of the corresponding light-emitting device in the second direction Y, and the length of the shading member 23 exceeding the corresponding light-emitting device is less than half of the spacing distance between the light-emitting device and the adjacent light-emitting device in the second direction Y, such as 1 / 3, 1 / 4, or 1 / 5, so as to better shield the corresponding light-emitting device and avoid affecting the light output of the adjacent light-emitting device.

[0058] For example, the length of the first shading portion 231 in the second direction Y is greater than or equal to the length of the corresponding first light-emitting device 221 in the second direction Y, and the length of the first shading portion 231 exceeding the first light-emitting device 221 is less than half of the spacing between two adjacent first light-emitting devices 221, so as to better shield the first light-emitting device 221 and avoid affecting the light output of the adjacent second light-emitting device 222.

[0059] In one embodiment, referring to Figures 1 to 6 , Figure 6 This is a schematic diagram of a second planar structure of the arrangement of the shading member 23 provided in the embodiment of the present application. Figure 6 ,and Figure 4 The difference in the arrangement of the shading member 23 of the example is that the shading member 23 also includes a third shading portion 233 disposed on one side of the second light emitting device 222, and the third shading portion 233 and the second light emitting device 222 are arranged in sequence in the first direction X. The third shading portion 233 and the first shading portion 231 are both located between the first light emitting device 221 and the second light emitting device 222, and the third shading portion 233 is located on the side of the second light emitting device 222 close to the first light emitting device 221 to block the side light emitted by the second light emitting device 222, so as to further match the variation law of the chromaticity difference of the first display panel 10 at a large viewing angle in the first direction X with the viewing angle, thereby further reducing the color deviation difference between the second display panel 20 and the first display panel 10 at the same viewing angle in the first direction X. The shading member 23 is not disposed on the side of the second light emitting device 222 close to the third light emitting device 223 to avoid affecting the light emission of the third light emitting device 223.

[0060] Optionally, there is a gap between the third light shielding portion 233 and the first light shielding portion 231, and the heights of the third light shielding portion 233 and the first light shielding portion 231 can be the same or different, and can be specifically designed according to the color cast difference between the second display panel 20 and the first display panel 10 that needs to be reduced. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0061] In one embodiment, referring to Figures 1 to 7 , Figure 7 This is a schematic diagram of a third planar structure of the arrangement of the shading member 23 provided in the embodiment of the present application. Figure 7 ,and Figure 6 The difference in the arrangement of the shading member 23 in the example is that the first shading portion 231 and the third shading portion 233 are integrally arranged, which can reduce the color cast difference between the second display panel 20 and the first display panel 10, simplify the process design, and reduce the difficulty of setting the shading member 23. For other explanations, please refer to the above embodiment, which will not be repeated here.

[0062] In one embodiment, referring to Figures 1 to 8 , Figure 8 This is a schematic diagram of a fourth planar structure of the arrangement of the shading member 23 provided in the embodiment of the present application. Figure 8 ,and Figure 4The difference in the arrangement of the shading member 23 of the example is that the first light emitting device 221, the second light emitting device 222 and the third light emitting device 223 are arranged in sequence in the second direction Y, a plurality of the first light emitting devices 221 are arranged in the first direction X, a plurality of the second light emitting devices 222 are arranged in the first direction X, and a plurality of the third light emitting devices 223 are arranged in the first direction X. The shading member 23 further includes a second shading portion 232 located on the other side of the first light emitting device 221, and the first light emitting device 221 is located between the first shading portion 231 and the second shading portion 232 in the first direction X. The specific design of the second shading portion 232 can refer to the design of the first shading portion 231.

[0063] The first light shielding portion 231 and the second light shielding portion 232 are disconnected, that is, no other light shielding member 23 is provided between the first light shielding portion 231 and the second light shielding portion 232, and the first light shielding portion 231 and the second light shielding portion 232 are not connected to avoid affecting the light output of the third light emitting device 223 adjacent to the first light emitting device 221. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0064] In one embodiment, referring to Figures 1 to 9 , Fig. 9 This is a fifth planar structural diagram of the arrangement of the shading member 23 provided in the embodiment of the present application. Fig. 9 ,and Figure 8 The difference in the arrangement of the shading member 23 in the example is that the shading member 23 further includes a third shading portion 233 disposed on one side of the second light emitting device 222 and a fourth shading portion 234 disposed on the other side of the second light emitting device 222. In the first direction X, the second light emitting device 222 is located between the third shading portion 233 and the fourth shading portion 234. The third shading portion 233 is disposed corresponding to the first shading portion 231 in the second direction Y, and the fourth shading portion 234 is disposed corresponding to the second shading portion 232 in the second direction Y, so as to further match the variation law of the chromaticity difference of the first display panel 10 at a large viewing angle in the first direction X with the viewing angle, thereby further reducing the color deviation difference between the second display panel 20 and the first display panel 10 at the same viewing angle in the first direction X. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0065] In one embodiment, referring to Figures 1 to 12 , Fig.10 This is a sixth planar structural diagram of the arrangement of the shading member 23 provided in the embodiment of the present application. Fig.11 for Fig.10 Detailed structural diagram of K in the middle. Fig.12for Fig.11 Schematic diagram of the cross-sectional structure along the M-M' and N-N' directions. Fig.10 ,and Fig. 9 The difference in the arrangement of the shading member 23 in the example is that the first shading portion 231, the second shading portion 232, the third shading portion 233 and the fourth shading portion 234 all have gaps with the corresponding light-emitting devices, so as to reduce the difficulty of manufacturing the shading member while meeting the shading of the light-emitting devices.

[0066] Specifically, refer to Fig.11 , there is a first interval L1 between the first light-shielding portion 231 and the first light-emitting device 221, there is a second interval L2 between the second light-shielding portion 232 and the first light-emitting device 221, there is a third interval L3 between the third light-shielding portion 233 and the second light-emitting device 222, and there is a fourth interval L4 between the fourth light-shielding portion 234 and the second light-emitting device 222, and the first interval L1, the second interval L2, the third interval L3 and the fourth interval L4 are all greater than or equal to 0um and less than or equal to 90um, for example, 0un, 5um, 10um, 15um, 20um, 25um, 30um, 40um, 50um, 60um, 70um, 80um, 90um, etc.

[0067] In the second direction Y, the length of each shading portion is greater than or equal to the length of the corresponding light emitting device, so as to further reduce the difficulty of manufacturing the shading member while satisfying the shading of the light emitting device. Specifically, the length of the first shading portion 231 is greater than or equal to the length of the first light emitting device 221, the length of the second shading portion 232 is greater than or equal to the length of the first light emitting device 221, the length of the third shading portion 233 is greater than or equal to the length of the second light emitting device 222, and the length of the fourth shading portion 234 is greater than or equal to the length of the second light emitting device 222.

[0068] Reference Fig.11Taking the first light shielding portion 231 and the third light shielding portion 233 as an example, in the second direction Y, the length of the first light shielding portion 231 is greater than the length of the first light-emitting device 221, so that the first light shielding portion 231 completely covers the side of the first light-emitting device 221 in the second direction Y and exceeds the side of the first light-emitting device 221. The length D1 of the first light shielding portion 231 exceeding the side of the first light-emitting device 221 is less than the pixel gap D0 between the first light-emitting device 221 and the adjacent second light-emitting device 222 or the third light-emitting device, and D1 is less than 1 / 2D0, for example, D1≤1 / 3D0, D1≤1 / 4D0, D1≤1 / 5D0, etc., so as to reduce the difficulty of making the light shielding member while realizing that the first light shielding portion 231 blocks the light output of the first light-emitting device 221, and avoids affecting the light output of adjacent light-emitting devices.

[0069] Correspondingly, in the second direction Y, the length of the third light-shielding portion 233 is greater than the length of the second light-emitting device 222, so that the third light-shielding portion 233 completely covers the side of the second light-emitting device 222 in the second direction Y and exceeds the side of the second light-emitting device 222. The length D1 of the third light-shielding portion 233 exceeding the side of the second light-emitting device 222 is less than the pixel gap D0 between the second light-emitting device 222 and the adjacent first light-emitting device 221 or the third light-emitting device, and D1 is less than 1 / 2D0, for example, D1≤1 / 3D0, D1≤1 / 4D0, D1≤1 / 5D0, etc., so as to reduce the difficulty of manufacturing the light-shielding member while realizing that the third light-shielding portion 233 blocks the light output of the second light-emitting device 222, and avoid affecting the light output of adjacent light-emitting devices.

[0070] Reference Fig.12, the third light shielding portion 233 has the same height as the fourth light shielding portion 234, the second light shielding portion 232 has the same height as the first light shielding portion 231, the height H1 of the first light shielding portion 231 is less than the height of the first light emitting device 221, and the height H2 of the third light shielding portion 233 is less than the height of the second light emitting device 222. The height H1 of the first light shielding portion 231 is less than the height H2 of the third light shielding portion 233. For example, when the heights of the first light emitting device 221 and the second light emitting device 222 are both 120um, the height of the first light shielding portion 231 is 71um, the height of the third light shielding portion 233 is 80um, and the distances of the first interval L1 and the third interval L3 are both 80um. By adjusting the height difference between the first light shielding portion 231 and the third light shielding portion 233, the chromaticity of the second display panel 20 at a large viewing angle in the first direction X can be better adjusted to better match the variation law of the chromaticity difference of the first display panel 10 at a large viewing angle in the first direction X with the viewing angle, thereby reducing the chromaticity difference of the large viewing angle between the second display panel 20 and the first display panel 10. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0071] Below Fig.10 The exemplary arrangement of the shading element verifies the matching degree of the second display panel and the first display panel in the present application in which the large viewing angle difference in the first direction changes with the viewing angle. Fig.13 , Fig.13 A schematic diagram comparing the chromaticity difference viewing angle curves of the second display panel and the first display panel provided in the embodiment of the present application. Fig.13 In the figure, curve A represents the trend of the chromaticity difference Δx of the first display panel changing with the viewing angle, curve B represents the trend of the chromaticity difference Δy of the first display panel changing with the viewing angle, curve C represents the trend of the chromaticity difference Δx of the LED display panel without the shading member changing with the viewing angle, curve D represents the trend of the chromaticity difference Δy of the LED display panel without the shading member changing with the viewing angle, curve E represents the trend of the chromaticity difference Δx of the second display panel changing with the viewing angle, and curve F represents the trend of the chromaticity difference Δy of the second display panel changing with the viewing angle, wherein Fig.13 The horizontal axis represents the viewing angle, and the vertical axis represents the value of the chromaticity difference. The chromaticity difference refers to the difference in chromaticity at different viewing angles relative to 0°. For example, the chromaticity difference at a 60° viewing angle refers to the difference between the chromaticity at a 60° viewing angle and the chromaticity at 0°. The chromaticity difference is also the chromaticity difference or color deviation.

[0072] from Fig.13It can be seen that the chromaticity difference Δx and Δy of the LED display panel without a shading member and the first display panel have inconsistent changing trends with the viewing angle, while the chromaticity difference Δx and Δy of the second display panel with a shading member in the present application and the first display panel have consistent changing trends with the viewing angle, which is the same as the law of change of the chromaticity difference of the first display panel at a large viewing angle in the first direction with the viewing angle, thereby reducing the large viewing angle chromaticity difference between the second display panel and the first display panel, and improving the problem that the large viewing angle chromaticity difference between the light emitting diode light bar and the liquid crystal display device causes the light emitting diode light bar to be bluish relative to the liquid crystal display device at a large viewing angle.

[0073] Based on the same inventive concept, the present application also provides a method for improving the color deviation of a spliced ​​display module. Figures 1 to 14 , Fig.14 A flow chart of a method for improving color deviation of a spliced ​​display module provided in an embodiment of the present application. Fig.14 The method for improving the color deviation of the spliced ​​display module comprises the following steps:

[0074] S201: providing a first display panel and a simulation display panel, and determining a first color deviation value of the simulation display panel and the first display panel at the same viewing angle in a first direction;

[0075] Specifically, the step of determining a first color deviation value of the analog display panel and the first display panel at the same viewing angle in a first direction includes:

[0076] Obtaining the chromaticity of the first display panel at each viewing angle in the first direction, and generating a first chromaticity difference viewing angle curve;

[0077] Specifically, refer to Fig.13 By measuring the chromaticity of the first display panel at each viewing angle in the first direction and calculating the chromaticity difference at each viewing angle, a first chromaticity difference viewing angle curve is drawn, such as Fig.13 Curve A and curve B in.

[0078] Adjusting the brightness and chromaticity of the analog display panel at a normal viewing angle to be consistent with the brightness and chromaticity of the first display panel at a normal viewing angle;

[0079] Obtaining the chromaticity of the analog display panel at each viewing angle in the first direction, and generating a second chromaticity difference viewing angle curve;

[0080] Specifically, refer to Fig.13 , by measuring the chromaticity of the simulated display panel at each viewing angle in the first direction, and calculating the chromaticity difference at each viewing angle, a second chromaticity difference viewing angle curve is drawn, such as Fig.13 The curve C and the curve D in FIG. 1 are shown in FIG. 1 . The analog display panel is an LED display panel without the shading member.

[0081] The first chromaticity difference viewing angle curve and the second chromaticity difference viewing angle curve are compared to obtain a first color deviation value of the analog display panel and the first display panel at the same viewing angle in the first direction.

[0082] Specifically, refer to Fig.13 ,according to Fig.13 The first chromaticity difference viewing angle curve and the second chromaticity difference viewing angle curve in the image can determine the difference in chromaticity difference between the analog display panel and the first display panel at each viewing angle, and the difference in chromaticity difference is the first color deviation value.

[0083] S202: Determine, according to the first color deviation value, the position and height of setting a virtual shading element on the virtual display panel;

[0084] Specifically, according to the first color deviation value, the step of determining the position and height of setting a virtual shading element on the virtual display panel includes:

[0085] determining, according to the first color deviation value, a target chromaticity of the simulated display panel at each viewing angle in the first direction;

[0086] Specifically, according to the first color deviation value, the chromaticity value that needs to be adjusted for the analog display panel at each viewing angle can be obtained. The chromaticity value that needs to be adjusted is the chromaticity value that needs to be compensated. The chromaticity value that needs to be compensated plus the chromaticity value that is away from the corresponding viewing angle is the target chromaticity.

[0087] Determining the brightness ratio of the simulated display panel at each viewing angle in the first direction according to the target chromaticity;

[0088] Specifically, a brightness ratio under a corresponding viewing angle can be obtained according to the target chromaticity, and the brightness ratio includes the brightness of a sub-pixel contributing red light, a sub-pixel contributing green light, and a sub-pixel contributing blue light.

[0089] The position and height of the virtual shading element on the virtual display panel are determined according to the brightness ratio.

[0090] Specifically, based on the brightness ratio under each viewing angle, a virtual shading element can be set to block the light output of some sub-pixels. For example, by adjusting the setting position and height of the virtual shading element, the proportion of the blocked sub-pixels in the mixed light can be adjusted to achieve the target chromaticity, thereby determining the position and height of the virtual shading element.

[0091] S203: manufacturing the second display panel based on the structure of the simulated display panel, and setting a shading member on the second display panel according to the position and height of the virtual shading member, wherein the shading member comprises a first shading portion arranged on one side of the first light-emitting device on the second display panel, the first shading portion and the first light-emitting device are alternately arranged in the first direction, and the shading portion limits a light emitting angle of the first light-emitting device in the first direction;

[0092] S204: splicing at least two of the first display panels to form a splicing area, and disposing the second display panel in the splicing area to form a splicing display module.

[0093] Based on the same inventive concept, an embodiment of the present application further provides a spliced ​​screen, which includes the spliced ​​display module 100 described in one of the aforementioned embodiments.

[0094] According to the above embodiments, it can be seen that:

[0095] The present application provides a spliced ​​display module and a method for improving color deviation thereof, and a spliced ​​screen, wherein the spliced ​​display module includes at least two first display panels and one second display panel, two adjacent first display panels are spliced ​​together to form a splicing area, the second display panel is arranged corresponding to the splicing area, a first shading portion is arranged on one side of the first light-emitting device on the second display panel, the first shading portion and the first light-emitting device are alternately arranged in a first direction, the first shading portion can block the wide-viewing angle light of the first light-emitting device, thereby limiting the wide-viewing angle light of the first sub-pixel contributing blue light, so as to adjust the chromaticity of the second display panel at a wide viewing angle in the first direction, so as to match the law of change of the chromaticity difference of the first display panel at a wide viewing angle in the first direction with the viewing angle, thereby reducing the large viewing angle chromaticity difference between the second display panel and the first display panel, and improving the problem that the large viewing angle chromaticity difference between the light-emitting diode light bar and the liquid crystal display device causes the light-emitting diode light bar to be blue relative to the liquid crystal display device at a wide viewing angle.

[0096] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0097] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A splicing display module, characterized in that: include: At least two first display panels, two adjacent first display panels are spliced ​​together to form a splicing area; A second display panel is arranged corresponding to the splicing area, the second display panel comprises a driving substrate and at least one light-emitting pixel arranged on the driving substrate, the light-emitting pixel comprises a first sub-pixel that contributes blue light, and the first sub-pixel comprises a first light-emitting device; Among them, the second display panel also includes a shading member arranged on the driving substrate, and the shading member includes a first shading portion arranged on one side of the first light-emitting device, the first shading portion and the first light-emitting device are alternately arranged in a first direction, and the first shading portion limits the light emission angle of the first light-emitting device in the first direction.

2. The splicing display module according to claim 1, characterized in that: The light-emitting pixel further includes a second sub-pixel contributing green light and a third sub-pixel contributing red light, the second sub-pixel includes a second light-emitting device, the third sub-pixel includes a third light-emitting device, the first light-emitting device, the second light-emitting device and the third light-emitting device are arranged in sequence in a second direction, and the second direction intersects with the first direction; The light shielding member further includes a second light shielding portion located at the other side of the first light emitting device. In the first direction, the first light emitting device is located between the first light shielding portion and the second light shielding portion.

3. The splicing display module according to claim 2, characterized in that: The shading member further includes a third shading portion disposed on one side of the second light emitting device, the third shading portion and the second light emitting device are alternately arranged in the first direction, and the third shading portion is disposed corresponding to the first shading portion in the second direction.

4. The splicing display module according to claim 3, characterized in that: The shading member also includes a fourth shading portion arranged on the other side of the second light emitting device. In the first direction, the second light emitting device is located between the third shading portion and the fourth shading portion. The fourth shading portion is arranged corresponding to the second shading portion in the second direction.

5. The splicing display module according to claim 4, characterized in that: The third light shielding portion has the same height as the fourth light shielding portion, the second light shielding portion has the same height as the first light shielding portion, and the first light shielding portion has a height smaller than the third light shielding portion.

6. The splicing display module according to claim 4, characterized in that: There is a first interval between the first light-shielding portion and the first light-emitting device, there is a second interval between the second light-shielding portion and the first light-emitting device, there is a third interval between the third light-shielding portion and the second light-emitting device, there is a fourth interval between the fourth light-shielding portion and the second light-emitting device, and the first interval, the second interval, the third interval and the fourth interval are all greater than or equal to 0um and less than or equal to 90um.

7. The splicing display module according to claim 4, characterized in that: In the second direction, the length of the first light-shielding portion is greater than or equal to the length of the first light-emitting device, the length of the second light-shielding portion is greater than or equal to the length of the first light-emitting device, the length of the third light-shielding portion is greater than or equal to the length of the second light-emitting device, and the length of the fourth light-shielding portion is greater than or equal to the length of the second light-emitting device.

8. The splicing display module according to claim 1, characterized in that: The light-emitting pixel further includes a second sub-pixel contributing green light and a third sub-pixel contributing red light, the second sub-pixel includes a second light-emitting device, the third sub-pixel includes a third light-emitting device, and the first light-emitting device, the second light-emitting device and the third light-emitting device are arranged in sequence in the first direction; The shading member further includes a third shading portion disposed on one side of the second light emitting device, and the third shading portion and the first shading portion are both located between the first light emitting device and the second light emitting device.

9. The splicing display module according to claim 8, characterized in that: The first light shielding portion and the third light shielding portion are integrally provided.

10. The splicing display module according to any one of claims 1 to 9, characterized in that: The height of the light shielding member is less than or equal to the height of the first light emitting device.

11. The splicing display module according to claim 10, characterized in that: The second display panel further includes an anti-peep film disposed on a side of the first light emitting device away from the driving substrate.

12. A spliced ​​screen, characterized in that: It comprises the splicing display module as claimed in any one of claims 1 to 11.

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