Double-sided display liquid crystal module

Abstract

The utility model discloses a double-face display liquid crystal module which is composed of a set of backlight lamp strip, a set of light guide plate, two sets of optical film materials, two sets of liquid crystal panels and a set of structural outer frame, and a set of optical film materials and a set of liquid crystal panels form a set of display mechanism. The set of backlight light bar, the set of light guide plate, the two sets of optical film materials and the two sets of liquid crystal panels are all fixedly connected to the structural outer frame, and the backlight light bar is arranged on the structural outer frame corresponding to the light incident surface of the light guide plate; the light guide plate is arranged in the middle of the two structural outer frames, the two display mechanisms are symmetrically arranged on the two sides of the light guide plate, the optical film material is located between the liquid crystal panel and the light guide plate, net points used for damaging total reflection of light in a light guide plate body are distributed on the light emitting face of the light guide plate, and the net points enable the light emitting amount of the two faces of the light guide plate to be consistent. The module solves the problems that an existing two-sided liquid crystal display module is large in thickness; two independent modules or two modules using two sets of backlight systems have the problem of large brightness difference of two-side display.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, in particular to a double-sided display liquid crystal module. Background Art

[0002] Some special environments require the use of double-sided display screens for signal content playback, so an integrated double-sided display module becomes necessary. Double-sided display LCD modules are generally assembled using two separate LCD modules placed back to back, or using the same backplane and assembling two sets of backlight systems and LCD panels on both sides of the backplane. The above methods will cause the thickness of the double-sided display LCD module to be large, and the two separate modules or two modules using two sets of backlight systems will have large differences in brightness on both sides.

[0003] In the prior art, Chinese patent publication number CN2862090Y, published on January 24, 2007, discloses a double-sided display liquid crystal display, which includes two oppositely arranged liquid crystal display panels and two oppositely arranged light guide plates, the two light guide plates are located between the two liquid crystal display panels, and is characterized in that: a double-sided reflective sheet integrally formed with the two light guide plates is provided between the two light guide plates.

[0004] However, the above technologies have obvious shortcomings:

[0005] 1. The two oppositely arranged liquid crystal display modules are thick.

[0006] 2. Two separate modules or two modules using two backlight systems will have a large difference in brightness on both sides. Summary of the invention

[0007] The purpose of the utility model is to overcome the above problems existing in the existing artificial board edge strip continuous cutting machine technology and provide a double-sided display liquid crystal module. The utility model solves the problems of large thickness and inconsistent brightness of the two sides of the traditional double-sided display liquid crystal module.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0009] A double-sided display liquid crystal module, characterized in that it is composed of a set of backlight strips, a set of light guide plates, two sets of optical film materials, two sets of liquid crystal panels and a set of structural frames, wherein the set of optical film materials and the set of liquid crystal panels constitute a set of display mechanisms; the set of backlight strips, the set of light guide plates, the two sets of optical film materials and the two sets of liquid crystal panels are all connected and fixed on the structural frames, and the backlight strips are arranged on the structural frames corresponding to the light incident surfaces of the light guide plates; the light guide plates are arranged in the middle of the two structural frames, the two sets of display mechanisms are symmetrically arranged on both sides of the light guide plates, and the optical film materials are located between the liquid crystal panels and the light guide plates, and the light emitting surface of the light guide plates is provided with grid points for destroying the total reflection of light inside the main body of the light guide plates, and the grid points make the light output on both sides of the light guide plates consistent.

[0010] The structural outer frame is provided with a light guide plate fixing and limiting module, two sets of optical film material fixing modules and two sets of liquid crystal panel bonding surfaces.

[0011] The optical film material is composed of a diffusion sheet, a 0° prism sheet, a 90° prism sheet and a reflective polarized brightness enhancement film which are sequentially placed outward from both sides of the light emitting surface of the light guide plate.

[0012] The optical film material is provided with a hanging ear or a convex ear at the edge, and is fixed to the fixing module of the optical film material of the structural outer frame through the hanging ear and the convex ear.

[0013] The edge of the non-light-incident side of the light guide plate is provided with a lug for fixing and limiting, and the light guide plate is fixed to the light guide plate fixing and limiting module of the structural outer frame through the lug.

[0014] The two sets of optical film materials are consistent in structure, material and model.

[0015] The two sets of liquid crystal panels are consistent in size and model.

[0016] The light emitting surface of the light guide plate comprises a first light emitting surface and a second light emitting surface, and dots are arranged on the second light emitting surface.

[0017] The dots are fixed on the second light emitting surface of the light guide plate by laser or printing and are evenly distributed.

[0018] The edge area outside the display area on the back of the liquid crystal panel is pasted with screen adhesive, and the liquid crystal panel is adhered to the liquid crystal panel bonding surface of the structural outer frame through the screen adhesive.

[0019] The advantages of adopting the utility model are:

[0020] 1. The double-sided display liquid crystal film set has no metal backplane, which minimizes the thickness of the double-sided liquid crystal film set.

[0021] Second, only one set of backlight strips and light guide plates were used, and the light output on both sides of the light guide plates was adjusted to keep consistent. Two sets of optical film materials with the same structure, material, and model, and two sets of LCD panels with the same size and model were used, thereby ensuring consistent brightness on both sides of the double-sided LCD module.

[0022] 3. The use of reflective paper and metal backplane has been eliminated, reducing module costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a double-sided display liquid crystal module that uses a light guide plate to achieve uniform brightness according to the present invention;

[0024] Figure 2 Schematic diagram of light splitting of a light guide plate in an embodiment of the present invention.

[0025] Marked in the figure: 1. backlight bar, 2. light guide plate, 3. optical film material, 4. first optical film material, 5. second optical film material, 6. liquid crystal panel, 7. first liquid crystal panel, 8. second liquid crystal panel, 9. structural frame, 10. first light emitting surface, 11. second light emitting surface, 12. dots. DETAILED DESCRIPTION

[0026] Example 1

[0027] This embodiment further illustrates the structure and principle of the utility model in conjunction with the accompanying drawings

[0028] A double-sided display liquid crystal module, characterized in that it is composed of a set of backlight strips 1, a set of light guide plates 2, two sets of optical film materials 3, two sets of liquid crystal panels 6 and a set of structural frames 9, wherein the set of optical film materials and the set of liquid crystal panels constitute a set of display mechanisms; the set of backlight strips 1, the set of light guide plates 2, the two sets of optical film materials 3 and the two sets of liquid crystal panels 6 are all connected and fixed on the structural frames 9, and the backlight strips 1 are arranged on the structural frames 9 corresponding to the light incident surface of the light guide plates 2; the light guide plates 2 are arranged in the middle of the two structural frames, the two sets of display mechanisms are symmetrically arranged on both sides of the light guide plates 2, and the optical film materials 3 are located between the liquid crystal panels 6 and the light guide plates 2, and the light emitting surface of the light guide plates 2 is arranged with mesh points 12 for destroying the total reflection of light inside the light guide plate body, and the mesh points 12 make the light output amount on both sides of the light guide plate consistent.

[0029] In this embodiment, the structural outer frame 9 is provided with a light guide plate fixing and limiting module, two sets of optical film material 3 fixing modules and two sets of liquid crystal panel 6 bonding surfaces.

[0030] In this embodiment, the optical film material 3 is composed of a diffuser, a 0° prism sheet, a 90° prism sheet and a reflective polarized brightness enhancement film which are sequentially placed outward from both sides of the light emitting surface of the light guide plate 2 .

[0031] In this embodiment, the optical film material 3 is provided with a hanging ear or a protruding ear at the edge thereof, and is fixed to the fixing module of the optical film material of the structural outer frame 9 through the hanging ear and the protruding ear.

[0032] In this embodiment, a lug for fixing and limiting is provided on the non-light incident side edge of the light guide plate 2, and the light guide plate 2 is fixed to the light guide plate fixing and limiting module of the structural outer frame 9 through the lug to prevent the light guide plate from displacement.

[0033] In this embodiment, the two sets of optical film materials 3 have the same structure, material and model.

[0034] In this embodiment, the two sets of liquid crystal panels 6 are of the same size and model.

[0035] In this embodiment, the light emitting surface of the light guide plate includes a first light emitting surface 10 and a second light emitting surface, and dots are arranged on the second light emitting surface 11 .

[0036] In this embodiment, the dots 12 are fixed on the second light emitting surface 11 of the light guide plate by laser or printing and are evenly distributed.

[0037] In this embodiment, a screen-sticking adhesive is pasted on the edge area of ​​the back side of the liquid crystal panel 6 outside the display area, and the liquid crystal panel 6 is adhered to the liquid crystal panel bonding surface of the structural outer frame 9 by the screen-sticking adhesive.

[0038] Example 2

[0039] like Figure 1 As shown, this patent designs an ultra-thin double-sided display liquid crystal module with consistent brightness on both sides, which is composed of a backlight bar 1, a light guide plate 2, a first optical film material 4, a second optical film material 5, a first liquid crystal panel 7, a second liquid crystal panel 8 and a structural outer frame 9. The backlight bar 1, the light guide plate 2, the first optical film material 4, the second optical film material 5, the first liquid crystal panel 7 and the second liquid crystal panel 8 are connected and fixed to the structural outer frame 9.

[0040] Compared with the prior art, the missing components include: module structure back panel and reflective paper.

[0041] The structural backplane of a conventional liquid crystal module can be used to support reflective sheets, fasten light guide plates, and serve as the exterior back cover of a liquid crystal display.

[0042] The reflective paper is usually placed under the light guide plate and supported by the module structure backplane to keep it spread normally without deformation. The module structure backplane and reflective sheet are eliminated, which does not affect the module assembly and can also save costs.

[0043] The light guide plate has a certain thickness, such as 2.0mm, and has a relatively high hardness. After the structural backplane is removed, it can be fixed to the structural frame without affecting the assembly of the double-sided module. The light guide plate of a conventional LCD module often adds a clamping area on the light guide plate and fixes it to the side frame of the module by screws or limit clamps. The optical film material of a conventional LCD module is fixed to the side frame of the module by setting a lug or a hanging lug area. The LCD panel of a conventional narrow-frame LCD module is fixed to the module structural frame by bonding the LCD panel with a screen adhesive.

[0044] At the same time, the light emitted from both sides of the light guide plate of the double-sided display liquid crystal module cannot completely pass through the first optical film material 4, the first liquid crystal panel 7 and the second optical film material 5, the second liquid crystal panel 8, and part of the light will be reflected back. The light reflected back by the first optical film material 4 and the first liquid crystal panel 7 passes through the light guide plate again to enter the second optical film material 5 and the second liquid crystal panel 8 for reuse; the light reflected back by the second optical film material 5 and the second liquid crystal panel 8 passes through the light guide plate again to enter the first optical film material 4 and the first liquid crystal panel 7 for reuse, and the light generated by the backlight strip 1 is reasonably utilized to the maximum extent without being lost.

[0045] like Figure 2 As shown, the light emitted by the backlight strip enters the light guide plate 2 and is totally reflected, and cannot be reflected from both sides of the light guide plate 2. After adding the dots 12 on one side of the light guide plate 1, the total reflection condition of the light inside the light guide plate 2 is destroyed, the light reflection angle changes, and the light can be emitted from both sides of the light guide plate 2. By adjusting and determining the refractive index, size, and distribution of the material of the dots 12 on the light guide plate, the amount of light emitted from both sides of the light guide plate can be made consistent.

[0046] The light emitted from both sides of the light guide plate 2 enters the first optical film material 4, the first liquid crystal panel 7, the second optical film material 5, and the second liquid crystal panel 8 respectively. Since the structure, material, and model of the first optical film material 4 and the second optical film material 5 and the size and model of the first liquid crystal panel 7 and the second liquid crystal panel 8 are consistent, when the brightness of both sides is the same, the brightness of both sides of the double-sided display liquid crystal module is consistent.

[0047] The double-sided display liquid crystal module designed in this patent includes a backlight bar 1, a light guide plate 2, a first optical film material 4, a second optical film material 5, a first liquid crystal panel 7, a second liquid crystal panel 8 and a structural frame 9, and the thickness of the module can be less than 10 mm.

Claims

1. A double-sided display liquid crystal module, characterized in that: The device comprises a set of backlight strips (1), a set of light guide plates (2), two sets of optical film materials (3), two sets of liquid crystal panels (6) and a set of structural outer frames (9), wherein the set of optical film materials and the set of liquid crystal panels constitute a set of display mechanisms; the set of backlight strips (1), the set of light guide plates (2), the two sets of optical film materials (3) and the two sets of liquid crystal panels (6) are all connected and fixed to the structural outer frames (9), and the backlight strips (1) are arranged on the structural outer frames (9) corresponding to the light incident surface of the light guide plates (2); the light guide plates (2) are arranged in the middle of the two structural outer frames, the two sets of display mechanisms are symmetrically arranged on both sides of the light guide plates (2), and the optical film materials (3) are located between the liquid crystal panels (6) and the light guide plates (2); and the light exiting surface of the light guide plates (2) is provided with mesh points (12) for destroying the total reflection of light in the main body of the light guide plates, and the mesh points (12) make the light output amount of the two sides of the light guide plates consistent.

2. A double-sided display liquid crystal module according to claim 1, characterized in that: The structural outer frame (9) is provided with a light guide plate fixing and limiting module, two sets of optical film material (3) fixing modules and two sets of liquid crystal panel (6) bonding surfaces.

3. A double-sided display liquid crystal module according to claim 1, characterized in that: The optical film material (3) is composed of a diffusion sheet, a 0° prism sheet, a 90° prism sheet and a reflective polarized brightness enhancement film which are sequentially placed outward from both sides of the light emitting surface of the light guide plate (2).

4. A double-sided display liquid crystal module according to claim 2, characterized in that: The optical film material (3) is provided with a hanging ear or a protruding ear at the edge, and is fixed to the optical film material fixing module of the structural outer frame (9) via the hanging ear and the protruding ear.

5. A double-sided display liquid crystal module according to claim 2, characterized in that: The non-light incident side edge of the light guide plate (2) is provided with a lug for fixing and limiting, and the light guide plate (2) is fixed to the light guide plate fixing and limiting module of the structural outer frame (9) via the lug.

6. A double-sided display liquid crystal module according to claim 2, characterized in that: The two sets of optical film materials (3) have the same structure, material and model.

7. A double-sided display liquid crystal module according to claim 2, characterized in that: The two sets of liquid crystal panels (6) are of the same size and model.

8. The double-sided display liquid crystal module according to claim 1, characterized in that: The light-emitting surface of the light guide plate comprises a first light-emitting surface (10) and a second light-emitting surface, and dots are arranged on the second light-emitting surface (11).

9. A double-sided display liquid crystal module according to claim 7, characterized in that: The mesh dots (12) are fixed on the second light emitting surface (11) of the light guide plate by laser or printing and are evenly distributed.

10. The double-sided display liquid crystal module according to claim 1, characterized in that: The edge area outside the display area on the back of the liquid crystal panel (6) is adhered with screen adhesive, and the liquid crystal panel (6) is adhered to the liquid crystal panel bonding surface of the structural outer frame (9) by the screen adhesive.

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