Tiled display apparatus

Abstract

The application discloses a spliced display device. The light bar is installed on the side wall of the frame body by setting the frame body, the light bar and the light guide piece. The light bar comprises a first light emitting surface. The light guide piece is fixed with the frame body and is arranged between the optical film and the display panel. The light guide piece comprises a light entering surface and a second light emitting surface. The second light emitting surface is opposite to the light entering surface. The light entering surface faces the first light emitting surface. The second light emitting surface faces away from the first light emitting surface. The plane where the second light emitting surface is located passes through the display panel. The light generated by the light bar can be emitted from the second light emitting surface and act on the area between the optical film and the display panel, thereby increasing the brightness of the area between the optical film and the display panel, improving the problem that there is a dark line and a dark shadow at the boundary of the transition area from the first display module to the second display module of the display picture of the spliced display device under a large viewing angle, and improving the display effect of the spliced display device.

Description

Technical Field

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

[0002] To eliminate the gaps created by traditional splicing of LCD displays, existing spliced ​​displays incorporate an LED direct display device between two adjacent LCD displays. Due to the different light-emitting principles of LCD and LED direct displays, at wide viewing angles, the spliced ​​display screen exhibits dark lines and shadows at the transition zone between the LCD and LED direct displays, reducing the display quality of the spliced ​​display. Summary of the Invention

[0003] Embodiments of the present application provide a spliced ​​display device to improve the problems of dark lines and shadows on a display screen of the spliced ​​display device.

[0004] An embodiment of the present application provides a spliced ​​display device, comprising a plurality of first display modules and a second display module adjacent to the first display modules, wherein the second display module is spliced ​​with the first display module, wherein the first display module comprises a backlight module and a display panel provided on the backlight module, wherein the backlight module comprises:

[0005] Back panel;

[0006] a light board, the light board being arranged on the back board;

[0007] a frame, the frame being arranged on the back plate;

[0008] a diffusion plate, the diffusion plate being arranged above the light panel;

[0009] an optical film, the optical film being arranged on a surface of the diffuser plate away from the light panel;

[0010] A light bar, the light bar being mounted on a side wall of the frame, the light bar comprising a first light emitting surface;

[0011] A light guide is fixed to the frame and is located between the optical film and the display panel. The light guide includes a light incident surface and a second light emitting surface. The second light emitting surface is opposite to the light incident surface, the light incident surface faces the first light emitting surface, and the second light emitting surface faces away from the first light emitting surface.

[0012] Furthermore, the light guide includes a base, a first side located on one side of the base, and a second side located on the other side of the base. The base is connected to the frame, the light incident surface is located on the first side, and the second light emitting surface is located on the second side.

[0013] Furthermore, a first distance from the top of the second light emitting surface to the outer side walls of the two frame bodies is not equal to a second distance from the bottom of the second light emitting surface to the outer side walls of the frame bodies.

[0014] Furthermore, the second light-emitting surface is an arc-shaped convex surface or an arc-shaped concave surface.

[0015] Furthermore, the backlight module also includes an adhesive, and the display panel is fixed to the frame through the adhesive. The light guide also includes a third light emitting surface, and the plane where the third light emitting surface is located intersects with the plane where the second light emitting surface is located. In the top view of the spliced ​​display device, the third light emitting surface does not overlap with the adhesive, and the third light emitting surface does not overlap with the frame.

[0016] Furthermore, there is a first distance between the third light emitting surface and the display panel, and the first distance is smaller than the thickness of the adhesive component.

[0017] Furthermore, in a top view of the spliced ​​display device, the second display module covers the light guide member.

[0018] Furthermore, the frame body includes a first sub-frame and a second sub-frame, the first sub-frame is installed on the back panel, the second sub-frame is fixed to the first sub-frame, the diffuser is installed on the first sub-frame, the light bar is installed on the side wall of the second sub-frame, the light guide is fixed to the second sub-frame, and the display panel is installed on the second sub-frame.

[0019] Furthermore, a groove is provided on the side wall of the second sub-frame, and the light bar is installed in the groove.

[0020] Furthermore, there is a second distance between the light guide and the optical film, and the second distance is smaller than the thickness of the optical film.

[0021] Beneficial effects of this application:

[0022] The present application provides a spliced ​​display device, which comprises a frame, a light bar and a light guide, and the light bar is installed on the side wall of the frame, the light bar is arranged to include a first light emitting surface, the light guide is fixed to the frame, and the light guide is arranged between the optical film and the display panel, and the light guide is arranged to include a light incident surface and a second light emitting surface, the second light emitting surface is opposite to the light incident surface, the light incident surface faces the first light emitting surface, the second light emitting surface faces away from the first light emitting surface, and the plane where the second light emitting surface is located passes through the display panel; so that the light generated by the light bar can be emitted from the second light emitting surface and act on the area between the optical film and the display panel, thereby increasing the brightness of the area between the optical film and the display panel, improving the problem of dark lines and shadows at the boundary of the transition area from the first display module to the second display module of the display image of the spliced ​​display device under a wide viewing angle, and improving the display effect of the spliced ​​display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a first display module of a conventional spliced ​​display device;

[0024] Figure 2 is a top view of the spliced ​​display device in this application;

[0025] Figure 3 is a side view of the spliced ​​display device in this application;

[0026] Figure 4 yes Figure 3 An enlarged view of position A of the first structure of the spliced ​​display device shown;

[0027] Figure 5 yes Figure 3 An enlarged view of position A of the second structure of the spliced ​​display device shown;

[0028] Figure 6 yes Figure 3 An enlarged view of position A of the third structure of the spliced ​​display device is shown;

[0029] Figure 7 yes Figure 3 An enlarged view of position A of the fourth structure of the spliced ​​display device is shown;

[0030] Figure 8 yes Figure 3 An enlarged view of position A of the fifth structure of the spliced ​​display device is shown;

[0031] Figure 9 yes Figure 3 An enlarged view of position A of the sixth structure of the spliced ​​display device is shown;

[0032] Figure 10 yes Figure 3 An enlarged view of position A of the seventh structure of the spliced ​​display device is shown;

[0033] Figure 11 is a schematic diagram of a light bar of a first display module of a spliced ​​display device in this application;

[0034] Figure 12 is a schematic diagram of a light guide member of a first display module of a spliced ​​display device in the present application;

[0035] Figure 13 Schematic diagram of the installation method of the light bar, light guide and second sub-frame of the spliced ​​display device in this application.

[0036] Figure 14 Schematic diagram of the path of light generated by the light bar of the spliced ​​display device in this application.

[0037] 100-first display module, 110-backlight module, 111-back plate, 112-frame, 1121-first sub-frame, 1122-second sub-frame, 1123-groove, 113-diffuser plate, 114-light bar, 1141-first light emitting surface, 115-light guide, 1151-first side, 1152-light incident surface, 1153-second side, 1154-second light emitting surface, 1155-base, 1156-third light emitting surface, 116-adhesive, 117-optical film, 118-light board, 120-display panel, 130-cover plate; 200-second display module.

[0038] 10-back panel; 20-light board; 30-frame; 40-diffuser plate; 50-display panel. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The technical solutions described below are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0040] In addition, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise expressly limited.

[0041] In order to eliminate the splicing gaps caused by traditional splicing of LCD display devices, traditional splicing display devices will set up LED direct display devices between two adjacent LCD display devices. Figure 1The LCD display device of the spliced ​​display device includes a back panel 10, a lamp board 20, a diffuser plate 40, a frame 30 and a display panel 50. The lamp board 10 is arranged on the back panel 20, the diffuser plate 40 is arranged directly above the lamp board 20, the frame 30 is arranged on the back panel 10, and the display panel 50 is installed on the frame 30. Since the light-emitting principles of the LCD display device and the LED direct display device are different, the display screen of the spliced ​​display device under a wide viewing angle has dark lines and shadows at the boundary of the transition area Q1 from the LCD display device to the LED direct display device, resulting in a reduction in the display effect of the display screen of the spliced ​​display device.

[0042] The embodiment of the present application provides a spliced ​​display device, referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 11 、 Figure 12 as well as Figure 14 The spliced ​​display device includes multiple first display modules 100 and second display modules 200, two first display modules 100 are arranged side by side, the second display module 200 is arranged between two adjacent first display modules 100, and the second display module 200 is spliced ​​with the first display module 100, the first display module 100 includes a backlight module 110 and a display panel 120 arranged on the backlight module 110, the backlight module 110 includes a back panel 111, a light panel 118, a frame 112, a diffuser plate 113, an optical film 117, a light bar 114 and a light guide 115.

[0043] Specifically, the light board 118 is arranged on the back panel 111; the frame 112 is arranged on the back panel 111; the diffuser plate 113 is arranged above the light board 118; the optical film 117 is arranged on a surface of the diffuser plate 113 away from the light board 118; the light bar 114 is installed on the side wall of the frame 112, and the light bar 114 includes a first light emitting surface 1141; the light guide 115 is fixed to the frame 112, and the light guide 115 is located between the optical film 117 and the display panel 120, and the light guide 115 includes a light incident surface 1152 and a second light emitting surface 1154, the second light emitting surface 1154 is opposite to the light incident surface 1152, the light incident surface 1152 faces the first light emitting surface 1141, and the second light emitting surface 1154 faces away from the first light emitting surface 1141.

[0044] By setting the frame 112, the light bar 114 and the light guide 115, the light bar 114 is installed on the side wall of the frame 112, the light bar 114 is set to include a first light emitting surface 1141, the light guide 115 is fixed to the frame 112, and the light guide 115 is located between the diffuser 113 and the display panel 120, and the light guide 115 is set to include a light incident surface 1152 and a second light emitting surface 1154, the second light emitting surface 1154 is opposite to the light incident surface 1152, the light incident surface 1152 faces the first light emitting surface 1141, and the second light emitting surface 1154 faces away from the first light emitting surface 1141, and the plane where the second light-emitting surface 1154 is located passes through the display panel 120; so that the light L generated by the light bar 114 can be emitted from the second light-emitting surface 1154 and act on the area Q2 between the optical film 117 and the display panel 120, thereby increasing the brightness of the area Q2 between the optical film 117 and the display panel 120, improving the problem of dark lines and shadows at the boundary of the transition area from the first display module 100 to the second display module 200 of the spliced ​​display device under a wide viewing angle, and improving the display effect of the spliced ​​display device.

[0045] In this embodiment, the surface where the second light emitting surface 1154 is located passes through the surface where the display panel 120 is located.

[0046] In this embodiment, the first display module 100 is a liquid crystal display module, and the second display module 200 is an LED direct display module.

[0047] In this embodiment, two adjacent first display modules 100 are arranged axially symmetrically with respect to the first reference plane.

[0048] In this embodiment, the light guide member 115 is a light guide bar.

[0049] In this embodiment, the light guide member 115 is made of at least one of PC (polycarbonate) and PMMA (polymethyl methacrylate).

[0050] In this embodiment, the light bar 114 is disposed on a side wall of the frame body 112 away from the first reference plane.

[0051] In this embodiment, the light bar 114 is fixed to the side wall of the frame 112 away from the first reference plane by adhesive.

[0052] In this embodiment, reference Figure 12The light guide member 115 includes a base 1155, a first side 1151 on one side of the base 1155, and a second side 1153 on the other side of the base 1155, the base 1155 is connected with the frame 112, the light-in surface 1152 is located on the first side 1151, and the second light-out surface 1154 is located on the second side 1153. By arranging the light guide member 115 to include the base 1155, the first side 1151 on one side of the base 1155, and the second side 1153 on the other side of the base 1155, the base 1155 is connected with the frame 112, the light-in surface 1152 is located on the first side 1151, and the second light-out surface 1154 is located on the second side 1153, it is ensured that the light L generated by the light bar 114 can enter the light guide member 115 from the light-in surface 1152 of the first side 1151, and after passing through the first base 1155, the light can act on the area Q2 between the optical film 117 and the display panel 120 from the light-out surface of the second side 1153, so as to achieve the purpose of brightening the area Q2 between the optical film 117 and the display panel 120.

[0053] In the embodiment, with reference to Figure 4-Figure 6 , the first distance L1 from the top end of the second light-out surface 1154 to the outer side wall of the frame 112 is equal to the second distance L2 from the bottom end of the second light-out surface 1154 to the outer side wall of the frame 112.

[0054] In the embodiment, with reference to Figure 5 and Figure 6 , when the first distance L1 from the top end of the second light-out surface 1154 to the outer side wall of the frame 112 is equal to the second distance L2 from the bottom end of the second light-out surface 1154 to the outer side wall of the frame 112, the second light-out surface 1154 is an arc-shaped curved surface. By arranging the second light-out surface 1154 to be an arc-shaped curved surface, the area of the second light-out surface 1154 can be increased, so as to brighten the area between the diffusion plate 113 and the display panel 120.

[0055] Specifically, the arc-shaped curved surface is an arc-shaped convex surface. The curvature center of the arc-shaped convex surface is located on the same side as the center of the light guide member 115.

[0056] Specifically, the arc-shaped curved surface is an arc-shaped concave surface. The curvature center of the arc-shaped concave surface is located on the different side from the center of the light guide member 115.

[0057] In the embodiment, with reference to Figure 7-10 , the first distance L1 from the top end of the second light-out surface 1154 to the outer side wall of the frame 112 is not equal to the second distance L2 from the bottom end of the second light-out surface 1154 to the outer side wall of the frame 112.

[0058] In the embodiment, with reference to Figure 8The first distance L1 between the top end of the second light emitting surface 1154 and the outer wall of the frame body 112 is greater than the second distance L2 between the bottom end of the second light emitting surface 1154 and the outer wall of the frame body 112. By setting the first distance L1 between the top end of the second light emitting surface 1154 and the outer wall of the frame body 112 to be greater than the second distance L2 between the bottom end of the second light emitting surface 1154 and the outer wall of the frame body 112, compared to a solution in which the first distance L1 between the top end of the second light emitting surface 1154 and the outer wall of the frame body 112 is equal to the second distance L2 between the bottom end of the second light emitting surface 1154 and the outer wall of the frame body 112, the area of ​​the second light emitting surface 1154 can be increased, thereby further brightening the area Q2 between the optical film 117 and the display panel 120.

[0059] Specifically, the second light emitting surface 1154 is an inclined plane.

[0060] In this embodiment, reference Figure 9 and Figure 10 When a first distance L1 from the top of the second light emitting surface 1154 to the outer wall of the frame body 112 is greater than a second distance L2 from the bottom of the second light emitting surface 1154 to the outer wall of the frame body 112, the second light emitting surface 1154 is an arc-shaped surface. By setting the second light emitting surface 1154 as an arc-shaped surface, the area Q2 between the optical film 117 and the display panel 120 can be further brightened.

[0061] In this embodiment, reference Figure 7 The first distance L1 between the top end of the second light emitting surface 1154 and the outer wall of the frame body 112 is smaller than the second distance L2 between the bottom end of the second light emitting surface 1154 and the outer wall of the frame body 112. By setting the first distance L1 between the top end of the second light emitting surface 1154 and the outer wall of the frame body 112 to be smaller than the second distance L2 between the bottom end of the second light emitting surface 1154 and the outer wall of the frame body 112, compared to a solution in which the first distance L1 between the top end of the second light emitting surface 1154 and the outer wall of the frame body 112 is equal to the second distance L2 between the bottom end of the second light emitting surface 1154 and the outer wall of the frame body 112, the area of ​​the second light emitting surface 1154 can be increased, thereby further brightening the area Q2 between the optical film 117 and the display panel 120.

[0062] In this embodiment, when the first distance L1 from the top end of the second light emitting surface 1154 to the outer wall of the frame body 112 is smaller than the second distance L2 from the bottom end of the second light emitting surface 1154 to the outer wall of the frame body 112, the second light emitting surface 1154 is an arc-shaped curved surface. By setting the second light emitting surface 1154 as an arc-shaped curved surface, the area Q2 between the optical film 117 and the display panel 120 can be further brightened.

[0063] In this embodiment, the second light-emitting surface 1154 is an arc-shaped convex surface.

[0064] In this embodiment, the second light emitting surface 1154 is an arc-shaped concave surface.

[0065] In this embodiment, in a top view of the spliced ​​display device, the frame 112 covers the first side portion 1151 of the light guide 115 , and the frame 112 covers the first base portion 1155 of the light guide 115 .

[0066] In this embodiment, reference Figure 4 The backlight module 110 also includes an adhesive 116, and the display panel 120 is fixed to the frame 112 through the adhesive 116. The light guide 115 also includes a third light emitting surface 1156. The plane where the third light emitting surface 1156 is located intersects with the plane where the second light emitting surface 1154 is located. In the top view of the spliced ​​display device, the third light emitting surface 1156 does not overlap with the adhesive 116, and the third light emitting surface 1156 does not overlap with the frame 112.

[0067] In this embodiment, the adhesive member 116 is foam adhesive.

[0068] In this embodiment, the plane where the third light emitting surface 1156 is located is perpendicular to the plane where the second light emitting surface 1154 is located.

[0069] In this embodiment, reference Figure 4 A first distance a is defined between the third light emitting surface 1156 and the display panel 120, and the first distance a is less than the thickness of the adhesive 116. Providing the first distance a between the third light emitting surface 1156 and the display panel 120, and the first distance a being less than the thickness of the adhesive 116, prevents the display panel 120 from compressing the adhesive 116 during transportation of the spliced ​​display device, causing the display panel 120 to move toward the second side portion 1153 of the light guide 115, thereby causing the display panel 120 to collide with the second side portion 1153 of the light guide 115 and damage the display panel 120. This improves the quality of the display panel 120.

[0070] In this embodiment, reference Figure 4 There is a second distance b between the light guide member 115 and the diffuser plate 113 , and the second distance b is smaller than the thickness of the optical film 117 .

[0071] In this embodiment, reference Figure 4The first display module 100 further includes a cover plate 130, which is disposed on the display panel 120. The top surface of the second display module 200 is flush with the top surface of the cover plate 130. By providing the cover plate 130, disposing the cover plate 130 on the display panel 120, and arranging the top surface of the second display module 200 to be flush with the top surface of the cover plate 130, the display image of the spliced ​​display device is more complete, and the problem of black lines appearing on the display image of the spliced ​​display device due to the uneven joint between the first display module 100 and the second display module 200 of the spliced ​​display device is avoided.

[0072] In this embodiment, the distance between the cover plate 130 and the symmetry axis of two adjacent first display modules 100 is greater than the distance between the third light emitting surface 1156 of the light guide 115 and the symmetry axis.

[0073] In this embodiment, the axis of symmetry is located on the first reference plane.

[0074] In this embodiment, in the top view of the spliced ​​display device, the second display module 200 covers the light guide member 115 .

[0075] In this embodiment, reference Figure 4 and Figure 13 The frame 112 includes a first sub-frame 1121 and a second sub-frame 1122. The first sub-frame 1121 is mounted on the back panel 111, the second sub-frame 1122 is fixed to the first sub-frame 1121, the light bar 114 is mounted on the side wall of the second sub-frame 1122, the light guide 115 is fixed to the second sub-frame 1122, and the display panel 120 is mounted on the second sub-frame 1122. By providing the frame 112 with the first sub-frame 1121 and the second sub-frame 1122, it is easier to install the brightness enhancement device consisting of the second sub-frame 1122, the light bar 114, and the light guide 115 on the first display module 100.

[0076] In this embodiment, a groove 1123 is defined on the sidewall of the second sub-frame 1122 , and the light bar 114 is disposed in the groove 1123 .

[0077] In this embodiment, in the top view of the spliced ​​display device, a portion of the light guide member 115 is located in the groove 1123 .

[0078] The implementation scheme of this application is specifically as follows:

[0079] The video wall market is growing annually. LCD video walls dominate the low- and mid-range markets with their competitive pricing, while LED displays with minimal bezels are the mainstream in the high-end market. The bezel is a major bottleneck limiting the entry of LCD video walls into high-end products. The development of zero-bezel LCD video walls can enhance product competitiveness and capture the high-end LED indoor market with their price / seamless advantages, such as in broadcasting and media, big data centers, conference rooms, and educational environments. This can be expanded to include borderless LCD video walls.

[0080] To eliminate the gaps created by traditional LCD display splicing, existing solutions involve installing an LED direct display device between two adjacent LCD displays. Due to the different light-emitting principles of LCD and LED direct displays, dark lines and shadows can appear at the transition boundary between the LCD and LED direct displays at wide viewing angles, reducing the visual quality of the spliced ​​display.

[0081] By setting the frame 112, the light bar 114 and the light guide 115, the light bar 114 is installed on the side wall of the frame 112, the light bar 114 is set to include a first light emitting surface 1141, the light guide 115 is fixed to the frame 112, and the light guide 115 is located between the diffuser 113 and the display panel 120, and the light guide 115 includes a light incident surface 1152 and a second light emitting surface 1154, the second light emitting surface 1154 is opposite to the light incident surface 1152, the light incident surface 1152 faces the first light emitting surface 1141, and the second light emitting surface 1154 faces away from the first light emitting surface 1152. The light emitting surface 1141 and the plane where the second light emitting surface 1154 is located pass through the display panel 120; so that the light generated by the light strip 114 can be emitted from the second light emitting surface 1154 and act on the area between the optical film 117 and the display panel 120, thereby increasing the brightness of the area between the optical film 117 and the display panel 120, improving the problem of dark lines and shadows at the boundary of the transition area from the first display module 100 to the second display module 200 of the spliced ​​display device under a wide viewing angle, and enhancing the display effect of the spliced ​​display device.

[0082] The above describes in detail the specific embodiments of the present application. The above embodiments disclosed in this application are merely preferred embodiments of the present application. Those skilled in the art will appreciate that many variations and improvements can be made without departing from the spirit of the present application. These variations and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A spliced ​​display device, characterized in that: The present invention comprises a plurality of first display modules and a second display module adjacent to the first display modules, wherein the second display module is spliced ​​with the first display module, the first display module comprises a backlight module and a display panel provided on the backlight module, and the backlight module comprises: Back panel; a light board, the light board being arranged on the back board; a frame, the frame being arranged on the back plate; a diffusion plate, the diffusion plate being arranged above the light panel; an optical film, the optical film being arranged on a surface of the diffuser plate away from the light panel; A light bar, the light bar being mounted on a side wall of the frame, the light bar comprising a first light emitting surface; a light guide member fixed to the frame and located between the optical film and the display panel, the light guide member including a light incident surface and a second light emitting surface, the second light emitting surface being opposite to the light incident surface, the light incident surface facing the first light emitting surface, and the second light emitting surface facing away from the first light emitting surface; The light guide includes a base, a first side portion located on one side of the base, and a second side portion located on the other side of the base. The base is connected to the frame, the light incident surface is located on the first side portion, and the second light emitting surface is located on the second side portion.

2. The spliced ​​display device according to claim 1, wherein: A first distance from the top end of the second light emitting surface to the outer side wall of the frame body is not equal to a second distance from the bottom end of the second light emitting surface to the outer side wall of the frame body.

3. The spliced ​​display device according to claim 1, wherein: The second light-emitting surface is an arc-shaped convex surface or an arc-shaped concave surface.

4. The spliced ​​display device according to claim 1, wherein: The backlight module also includes an adhesive, and the display panel is fixed to the frame through the adhesive. The light guide also includes a third light emitting surface. The plane where the third light emitting surface is located intersects with the plane where the second light emitting surface is located. In the top view of the spliced ​​display device, the third light emitting surface does not overlap with the adhesive, and the third light emitting surface does not overlap with the frame.

5. The spliced ​​display device according to claim 4, wherein: There is a first distance between the third light emitting surface and the display panel, and the first distance is smaller than the thickness of the adhesive component.

6. The spliced ​​display device according to claim 1, wherein: In a top view of the spliced ​​display device, the second display module covers the light guide element.

7. The spliced ​​display device according to claim 1, wherein: The frame body includes a first sub-frame and a second sub-frame, the first sub-frame is installed on the back panel, the second sub-frame is fixed to the first sub-frame, the light bar is installed on the side wall of the second sub-frame, the light guide is fixed to the second sub-frame, and the display panel is installed on the second sub-frame.

8. The spliced ​​display device according to claim 7, wherein: A groove is provided on the side wall of the second sub-frame, and the light bar is installed in the groove.

9. The spliced ​​display device according to claim 1, wherein: There is a second distance between the light guide member and the optical film, and the second distance is smaller than the thickness of the optical film.

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