CN214540295U - Double-sided liquid crystal display screen - Google Patents
Double-sided liquid crystal display screen Download PDFInfo
- Publication number
- CN214540295U CN214540295U CN202120222371.XU CN202120222371U CN214540295U CN 214540295 U CN214540295 U CN 214540295U CN 202120222371 U CN202120222371 U CN 202120222371U CN 214540295 U CN214540295 U CN 214540295U
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- light
- frame body
- crystal panel
- optical film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The application provides an ultra-thin, ultralight, two-sided liquid crystal display of full look that optics diaphragm is obedient. The double-sided liquid crystal display panel includes: the light guide plate is provided with a first light emitting surface and a second light emitting surface which are oppositely arranged, and a plurality of side surfaces of which two ends are respectively adjacent to the first light emitting surface and the second light emitting surface, wherein at least one side surface is a light incident surface; the first liquid crystal panel and the second liquid crystal panel are respectively arranged on the outer side of the first light-emitting surface and the outer side of the second light-emitting surface; the light source is arranged adjacent to the light incident surface; the first optical film component is arranged between the light guide plate and the first liquid crystal panel and fixed on the first light-emitting surface through a first glue layer, and the second optical film component is arranged between the light guide plate and the second liquid crystal panel and fixed on the second light-emitting surface through a second glue layer.
Description
Technical Field
The application relates to the technical field of display, in particular to a double-sided liquid crystal display screen.
Background
With the development of the liquid crystal display industry, many products need to display images on the front and back surfaces of a display screen, and electronic products such as a dual-screen mobile phone and a dual-screen billboard are becoming popular.
The traditional LCD double-sided display uses two sets of common single-sided display devices, including an LCD liquid crystal panel and a side-in type backlight, which are gradually eliminated due to large volume, high cost and insufficient lightness and thinness. Generally, double-sided displays seen in markets, subways, museums and the like are all OLED products, but the OLED products have the disadvantages of being short in service life, high in cost price, serious in heating after being lighted for a long time, long in running time, and prone to color cast.
Therefore, how to provide a truly light and thin LCD double-sided transparent display is a technical problem to be solved in the field.
SUMMERY OF THE UTILITY MODEL
The application provides a double-sided liquid crystal display, through setting up double-sided liquid crystal display's concrete structure, realizes ultra-thin, ultralight, the two-sided liquid crystal display of full look LCD that the optics diaphragm is obedient.
According to an embodiment of the present application, there is provided a double-sided liquid crystal display panel, including:
the light guide plate is provided with a first light emitting surface and a second light emitting surface which are oppositely arranged, and a plurality of side surfaces of which two ends are respectively adjacent to the first light emitting surface and the second light emitting surface, wherein at least one side surface is a light incident surface;
the first liquid crystal panel is arranged on the outer side of the first light-emitting surface, and the second liquid crystal panel is arranged on the outer side of the second light-emitting surface;
the light source is arranged adjacent to the light inlet face, and light emitted by the light source enters the first liquid crystal panel through the first light outlet face and enters the second liquid crystal panel through the second light outlet face after entering the light inlet face;
the first optical film component is arranged between the light guide plate and the first liquid crystal panel and fixed on the first light-emitting surface through a first glue layer, and the second optical film component is arranged between the light guide plate and the second liquid crystal panel and fixed on the second light-emitting surface through a second glue layer.
Optionally, the double-sided liquid crystal display screen further includes a middle frame, and the middle frame includes a first frame body and a second frame body which are arranged oppositely;
the first frame body is arranged on one surface, far away from the light guide plate, of the first optical film assembly along the periphery of the first optical film assembly, at least part of the first frame body is located outside the periphery of the first optical film assembly, the first liquid crystal panel is fixed to one end, far away from the first optical film assembly, of the first frame body along the thickness direction, and a first gap is formed between the first liquid crystal panel and the first optical film assembly;
the second frame body is arranged on one surface, away from the light guide plate, of the second optical film assembly along the periphery of the second optical film assembly, at least part of the second frame body is located outside the periphery of the second optical film assembly, the second liquid crystal panel is fixed to one end, away from the second optical film assembly, of the second frame body in the thickness direction, and a second gap is formed between the second liquid crystal panel and the second optical film assembly.
Optionally, the middle frame further includes a connecting portion, the connecting portion is connected between the first frame body and the second frame body, and the first frame body, the second frame body and the connecting portion are integrally formed.
Optionally, the double-sided liquid crystal display further includes a supporting member, the supporting member is disposed along outer peripheries of side portions of the first liquid crystal panel and the second liquid crystal panel, and the middle frame is fixed to the supporting member.
Optionally, the first frame body and the second frame body both have a step structure, and in a direction from close to the light guide plate to far away from the light guide plate, the first frame body and the second frame body both include a first step and a second step that are stacked, the width of the first step is greater than that of the second step, and the second step is disposed at one end close to the outer edge of the first step;
the bottom surface of the first step of the first frame body is tightly attached to the first optical film assembly, and the bottom surface of the first step of the second frame body is tightly attached to the second optical film assembly.
Optionally, the first frame body and the second frame body are both white; and/or the presence of a gas in the gas,
the double-sided liquid crystal display screen also comprises a first diffusion strip, and the first diffusion strip is positioned between the first step of the first frame body and the first liquid crystal panel; and/or the presence of a gas in the gas,
the double-sided liquid crystal display screen further comprises a second diffusion strip, and the second diffusion strip is located between the first step of the second frame body and the second liquid crystal panel.
Optionally, the height of the first step is 1mm-2 mm; and/or the presence of a gas in the gas,
the thickness of the first diffusion strip and the second diffusion strip is 1mm-2mm, and the width of the first diffusion strip and the second diffusion strip is 2mm-3 mm.
Optionally, the first liquid crystal panel and the second liquid crystal panel are respectively fixed on the first frame body and the second frame body through a dispensing process; the thickness of the adhesive is 1mm-1.5 mm.
Optionally, the light guide plate is a light scattering light guide plate; and/or the presence of a gas in the gas,
the light guide plate is including the first leaded light layer, intermediate level and the second leaded light layer of overlapping in proper order establishing along thickness direction, first leaded light layer and second leaded light layer pass through the intermediate level bonding is as an organic whole, just but intermediate level reflection light, first leaded light layer with second leaded light layer is close to the one side in intermediate level all is equipped with the site.
Optionally, from the direction close to the light guide plate to the direction away from the light guide plate, the first optical film assembly and the second optical film assembly respectively include a diffusion sheet, a lower prism sheet, an upper prism sheet, a quantum dot film and a brightness enhancement film, and the diffusion sheet, the lower prism sheet, the upper prism sheet, the quantum dot film and the brightness enhancement film are sequentially laminated through a glue layer.
Optionally, the double-sided liquid crystal display screen further includes a first cover plate and a second cover plate, the first cover plate is disposed on the outer side of the first liquid crystal panel, and the second cover plate is disposed on the outer side of the second liquid crystal panel.
The utility model provides a two-sided liquid crystal display through setting up two-sided liquid crystal display's concrete structure, realizes ultra-thin, ultralight, the two-sided liquid crystal display of full vision LCD that the optics diaphragm is obedient. Specifically, the first liquid crystal panel and the second liquid crystal panel which are arranged oppositely share one set of light source and light guide plate, so that the overall structure is greatly simplified, and the light and thin structure is realized; the first optical film assembly is fixed on the first light emitting surface through the first glue film layer, the second optical film assembly is fixed on the second light emitting surface through the second glue film layer and can be directly fixed on the surface of the light guide plate, so that an integrated structure can be formed with the light guide plate, the light guide plate can be further thinned without being fixed by means of a frame, and the light guide plate has the beneficial effects of no light interface loss, high light efficiency, no wrinkles in film materials and good fitting performance.
Drawings
Fig. 1 is a schematic sectional view of a double-sided liquid crystal display panel of embodiment 1.
Fig. 2 is a schematic view of a partial sectional structure of the double-sided liquid crystal display panel of embodiment 1.
Fig. 3 is a schematic cross-sectional view showing a first example of the light guide plate for a double-sided liquid crystal display panel according to embodiment 1.
Fig. 4 is a schematic cross-sectional view of a second embodiment of the light guide plate for a double-sided liquid crystal display panel according to embodiment 1.
Fig. 5 is a schematic sectional view showing the prism sheet of the double-sided liquid crystal display panel of example 1.
Fig. 6 is a schematic cross-sectional view of a diffusion sheet for a double-sided liquid crystal display panel according to example 1.
Fig. 7 is a schematic view of a partial sectional structure of a double-sided liquid crystal display panel of embodiment 2.
Fig. 8 is a schematic sectional view of a double-sided liquid crystal display panel of embodiment 3.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "plurality" includes two, and is equivalent to at least two. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
Example 1
As will be understood with reference to fig. 1 and 2, the present embodiment provides a double-sided liquid crystal display panel 1. The double-sided liquid crystal display panel 1 includes: the liquid crystal display device includes a light guide plate 10, a first liquid crystal panel 21, a second liquid crystal panel 22, a light source 30, a first optical film assembly 41, and a second optical film assembly 42.
The light guide plate 10 has a first light emitting surface 11 and a second light emitting surface 12 disposed opposite to each other along a thickness direction W, and a plurality of side surfaces having two ends respectively adjacent to the first light emitting surface 11 and the second light emitting surface 12, wherein at least one side surface is a light incident surface 13.
The first liquid crystal panel 21 is disposed outside the first light emitting surface 11, and the second liquid crystal panel 22 is disposed outside the second light emitting surface 12.
The light source 30 is disposed adjacent to the light incident surface 13, and light emitted from the light source 30 enters the light incident surface 13 of the light guide plate 10, and then enters the first liquid crystal panel 21 through the first light emitting surface 11 and enters the second liquid crystal panel 22 through the second light emitting surface 12.
The first optical film assembly 41 is disposed between the light guide plate 10 and the first liquid crystal panel 21 and fixed on the first light emitting surface 11 through a first glue layer, and the second optical film assembly 42 is disposed between the light guide plate 10 and the second liquid crystal panel 22 and fixed on the second light emitting surface 12 through a second glue layer.
The double-sided liquid crystal display screen 1 of this embodiment, through setting up the concrete structure of double-sided liquid crystal display screen 1, realize ultra-thin, ultralight, the two-sided liquid crystal display screen 1 of full vision that the optics diaphragm is obedient. Specifically, the first liquid crystal panel 21 and the second liquid crystal panel 22 which are arranged oppositely share one set of the light source 30 and the light guide plate 10, so that the overall structure is greatly simplified, and the overall structure is light and thin; fix first optics diaphragm subassembly 41 on first play plain noodles 11 through first glue film and can the snap-on the surface of light guide plate 10 on second play plain noodles 12 through the fixed second optics diaphragm subassembly 42 of second glue film to can form the integral structure with light guide plate 10, need not fix with the help of frame 58, can further realize the frivolousness in the overall structure, and do not have the interface loss of light, the light efficiency is high, the membrane material does not have the fold, the good beneficial effect of compliance.
It should be noted that the first and second hydrogel layers are both made of hydrogel (for example, OCR, an Optical Clear adhesive, which has the characteristics of good cohesiveness, high transparency, small influence on display, etc.), the transmittance of the first and second hydrogel layers can reach more than 95%, and the thickness is usually 0.05mm to 0.1 mm; the precision of the general solid adhesive (such as OCA) can only reach 0.25 mm-0.5 mm (namely, the thickness of the solid adhesive is usually 0.25 mm-0.5 mm), the transmittance can only reach 85% -90%, the thickness is thicker after layer-by-layer adhesion, the light loss is large, and the adhesion is uneven. The glue technology adopts multi-needle type coating and applies pressure simultaneously, so that the glue can be smoothly expanded to be comprehensive, the glue can meet the required bonding without glue shortage or glue overflow, and simultaneously, the glue is yellowing-resistant and has low shrinkage rate. In this embodiment, the first optical film assembly 41 and the second optical film assembly 42 are fully attached to the nanometer light guide plate 10 by using water glue, and have the advantages of good thinness, no interface loss of light, high light efficiency, no wrinkles in the film material, and good conformability.
Specifically, the light guide plate 10 may be a single-layer structure design or a multi-layer structure design, and light is uniformly guided on both sides without a back plate.
As shown in fig. 3, when the light guide plate 10 is designed to have a single-layer structure, that is, the light guide plate 10 is a light-scattering light guide plate 10 doped with inorganic or organic polymer particles. The light-scattering light guide plate 10 operates on the following principle: glass beads and SiO are added to the base material 14 of the light guide plate 102And the silicon resin and the like, which have different refractive indexes from the base material, can deviate from the original route to be refracted, reflected and scattered in the advancing process, so that double-sided light guiding is realized.
The light scattering light guide plate 10 is mostly made of 1.5T to 3T thick plastic materials such as PMMA, MS, PS, etc. as a base material, and thus, the light weight and the light weight design are easily realized. The scattering particles are uniformly dispersed in the light guide plate 10, and the higher the refractive index of the scattering particles is, the higher the light scattering ability is (TiO)2(2.76)>Al2O3(1.76)>SiO2(1.46)). The particle size of scattering particles is 0.5 um-5 um, the number of scattering particles in unit volume with overlarge particle size is reduced, the scattering times in the same light propagation path is reduced, and the light effect is reduced. The doping concentration is 0.1-0.5 wt%, and the light attenuation is obvious in the transmission process and the light effect is reduced when the doping concentration is too high; too low a concentration does not guarantee the light scattering ability, which results in too much light output near the light source 30 and dark areas far from the light source 30.
As shown in fig. 4, when the light guide plate 10 is designed in a multi-layer structure, that is, the light guide plate 10 includes a first light guide layer 16, an intermediate layer 17 and a second light guide layer 18 stacked in sequence along the thickness direction, the first light guide layer 16 and the second light guide layer 18 are bonded together through the intermediate layer 17, the intermediate layer 17 can reflect light, and the surfaces of the first light guide layer 16 and the second light guide layer 18 close to the intermediate layer 17 are both provided with dots 19. The direction of the arrow in the figure is the propagation direction of light.
Since the dots 19 of the light guide plate 10 need to be arranged in a direction away from the light source 30 in the backlight design to achieve maximum light efficiency, when the dot 19 type light guide plate 10 is adopted, the light guide plate 10 needs to be arranged in a three-layer or multi-layer structure. The material of the first light guide layer 16 and the second light guide layer 18 may be glass or plastic. The thicknesses of the first light guide layer 16 and the second light guide layer 18 are both 1T-2T. The dots 19 are designed to be small and thin near the light source 30 and large and dense far from the light source 30. The dot 19 design of the upper and lower light guide layers is not in one-to-one relation, and the light efficiency is better utilized. The intermediate layer 17 is made of a double-sided adhesive optical adhesive, and may be a layer of adhesive material with reflectivity, or a transparent adhesive material with other optical film materials with reflectivity. The thickness of the middle layer 17 is 0.2 mm-0.5 mm, the reflectivity of the middle layer 17 is 50-75%, and the middle layer 17 with a certain transmittance is beneficial to light homogenization, increases the light mixing distance and improves the light effect.
Specific structures of the first optical film assembly 41 and the second optical film assembly 42: from being close to the light guide plate to keeping away from the light guide plate direction, first optics diaphragm subassembly and second optics diaphragm subassembly all include diffusion piece, lower prism piece, go up prism piece, quantum dot film and brightness enhancement film, and diffusion piece, lower prism piece, last prism piece, quantum dot film and brightness enhancement film pass through the glue film layer laminating in proper order. The material of glue film is glue, promptly, each layer diaphragm passes through glue film and laminates on the light guide plate layer by layer. Through each rete of glue laminating, can reach the fixed beneficial effect who reaches the promotion of light efficiency of solving optical film piece simultaneously.
Each layer of membrane of the traditional optical membrane component is fixed on the edge of a back plate in a hanging lug, bulge and other modes, the double-sided liquid crystal display screen in the embodiment is not provided with a back plate structure, and the membrane layer is fixed at fixed positions of the hanging lug, the bulge and the like, and meanwhile, the hanging lug and the bulge are generally arranged outside a display area of the display screen and covered by a frame, so that the display of the display area is prevented from being influenced, such as oppression light leakage and the like; because air gaps exist among the film materials, light loss and interface effect exist in the air and at the interface between the air and the film materials, and the light effect is reduced; therefore, the optical film materials mentioned in the double-sided liquid crystal display screen in the embodiment are attached to the light guide plate layer by layer, so that the fixation of the optical film assembly and the improvement of the light efficiency are solved.
As described above, the membranes are laminated layer by layer through the glue layer, so that the membranes do not move, adsorb, scratch and the like, and have no requirements on the support requirements and auxiliary functions of the monomers; the membrane material can only remain the functional layer, the supporting layer is thinned or is removed to further lighten and thin, and the transmittance of the membrane material is greatly improved.
As shown in fig. 5 and 6, for example: the thickness of the acrylic functional layer 431 of the upper prism sheet 43 is 25um to 50um, the thickness of the Pet substrate layer 432 is 50um to 250um, the total thickness of the upper prism sheet 43 selected in the embodiment is about 100um, and 185um is reduced compared with the commonly used 285 um. The structure of the lower prism sheet is the same as that of the upper prism sheet 43, and will not be described again.
The diffusion sheet 44 does not need an anti-adsorption layer, and meanwhile, the PET support layer 441 can be thinned to 50-100 um, so that the total thickness of the diffusion sheet 44 is controlled to be about 100 um; therefore, the total thickness of the whole double-sided liquid crystal display screen 1 is compared with other designs, the thinning is really achieved, meanwhile, the light loss is reduced, and the light effect is improved remarkably.
Referring to fig. 1 and fig. 2 again, in the present embodiment, the dual-sided liquid crystal display panel 1 further includes a middle frame 51, and the middle frame 51 includes a first frame 52 and a second frame 53 disposed oppositely.
The first frame 52 is disposed on a surface of the first optical film assembly 41 away from the light guide plate 10 along a peripheral edge of the first optical film assembly 41, and at least a portion of the first frame 52 is located outside the peripheral edge of the first optical film assembly 41, along a thickness direction, the first liquid crystal panel 21 is fixed to an end of the first frame 52 away from the first optical film assembly 41, and a first gap 61 is disposed between the first liquid crystal panel 21 and the first optical film assembly 41.
The second frame 53 is disposed on a surface of the second optical film assembly 42 away from the light guide plate 10 along a peripheral edge of the second optical film assembly 42, and at least a portion of the second frame 53 is located outside the peripheral edge of the second optical film assembly 42, along the thickness direction, the second liquid crystal panel 22 is fixed on an end of the second frame 53 away from the second optical film assembly 42, and a second gap 62 is disposed between the second liquid crystal panel 22 and the second optical film assembly 42.
Thus, by arranging the middle frame 51, a supporting surface is provided for the attachment of the first liquid crystal panel 21 and the second liquid crystal panel 22, and the frame 58 is prevented from being arranged on the light-emitting surface of the first liquid crystal panel 21 and the light-emitting surface of the second liquid crystal panel 22, so that the effect that the display area is not blocked completely can be realized, and the design requirements of the liquid crystal panels with increasingly high narrow frames 58, especially the requirements of the full-screen liquid crystal panel with ultra-narrow BM (black area or black matrix), can be met.
It should be noted that the first gap 61 is provided between the first liquid crystal panel 21 and the first optical film assembly 41, and the second gap 62 is provided between the second liquid crystal panel 22 and the second optical film assembly 42, so as to avoid the phenomena (such as rainbow patterns, newton rings, etc.) that the liquid crystal panel and the optical film assembly are too close to each other and optical interference and display defects are generated, and the display effect can be further improved by providing the first gap 61 and the second gap 62.
The thickness t1 of the first gap 61 and the thickness t2 of the second gap 62 are both 4mm to 8 mm.
Specifically, each of the first frame body 52 and the second frame body 53 has a step structure, and in a direction from close to the light guide plate 10 to far from the light guide plate 10, each of the first frame body 52 and the second frame body 53 includes a first step 54 and a second step 55 which are stacked, a width w1 of the first step 54 is greater than a width w2 of the second step 55, and the second step 55 is disposed at one end close to an outer edge of the first step 54. The bottom surface of the first step 54 of the first frame 52 is in close contact with the first optical film unit 41, and the bottom surface of the first step 54 of the second frame 53 is in close contact with the second optical film unit 42. The height of the first step 54 is 1mm to 2mm, and the height of the first step 54 is the thickness of the first step 54.
The double-sided liquid crystal display panel 1 further includes a first diffusion strip 71 and a second diffusion strip 72. The double-sided liquid crystal display panel 1 further includes a first diffusion strip 71, and the first diffusion strip 71 is located between the first step 54 of the first frame body 52 and the first liquid crystal panel 21. The double-sided liquid crystal display panel 1 further includes second diffusion stripes 72, and the second diffusion stripes 72 are located between the first steps 54 of the second frame 53 and the second liquid crystal panel 22. The first diffusion strips 71 and the second diffusion strips 72 may be four-sided connected, and may have a square structure. The first diffusion strip 71 and the second diffusion strip 72 are directly attached to the middle frame 51 using double-sided tape.
The first diffusion strips 71 and the second diffusion strips 72 are 1mm-2mm thick and 2mm-3mm wide.
The first frame body 52 and the second frame body 53 are both white. The part of the first step 54 which is wider than the second step 55 and the diffusion strip attached to the part can homogenize peripheral edge light, and prevent the problem that the display of a liquid crystal panel (BM <6mm) of an ultra-narrow BM (black area or black matrix) has uneven peripheral light and obvious boundary with a central display area.
In the present embodiment, the middle frame 51 further includes a connection portion 56, the connection portion 56 is connected between the first frame 52 and the second frame 53, and the first frame 52, the second frame 53 and the connection portion 56 are integrally formed.
The first liquid crystal panel 21 and the second liquid crystal panel 22 are respectively fixed on the first frame body 52 and the second frame body 53 through a glue dispensing 81 process; the thickness of the glue 81 is 1mm-1.5 mm.
In this way, by setting the structure of the middle frame 51, the secure and structurally-fixed outer frames of the first liquid crystal panel 21 and the second liquid crystal panel 22 are realized, foam attaching is not needed, and the bonding between the liquid crystal panels and the middle frame 51 is realized by adopting the edge glue 81 process, so that the effect of full-view and non-shielding of the liquid crystal panel (BM <6mm) of the ultra-narrow frame 58 is realized.
Optionally, the dual-sided liquid crystal display panel 1 further includes a first cover 91 and a second cover 92, the first cover 91 is disposed on the outer side of the first liquid crystal panel 21, and the second cover 92 is disposed on the outer side of the second liquid crystal panel 22. The first cover plate 91 is directly attached to the outer side of the first liquid crystal panel 21 through optical cement; similarly, the second cover plate 92 is directly attached to the outer side of the second liquid crystal panel 22 by an optical adhesive.
The manufacturing process of the double-sided liquid crystal display screen 1 has the following two conditions:
the first case corresponds to the case where the light guide plate 10 is a light-scattering light guide plate 10, and includes the steps of:
step 100: in a light scattering light guide plate 10 (thickness 3mm, PMMA, doped with SiO)2The particle diameter is 3um, and doping concentration is 0.3 wt%) adopts multi-needle head formula coating double-sided glue (material is OCR, thickness is 0.05mm), and optical diaphragm subassembly is put on the glue surface through robotic arm is leveled, adds appropriate pressure (0.45Mpa) after, the pressurize for a period of time (30 min). The diffusion sheet 44, the lower prism sheet, the upper prism sheet 43, the quantum dot film and the brightness enhancement film are sequentially attached, and the first optical film assembly 41 and the second optical film assembly 42 are attached in the same manner.
Step 200: the first frame body 52 and the second frame body 53 (3.5 mm in width and 3mm in height) of the middle frame 51 and the light guide plate 10 to which the first optical film assembly 41 and the second optical film assembly 42 are attached are fixed by a double-sided tape (2.5 mm in thickness).
Step 300: the first diffusion strips 71 (2 mm in width and 1mm in thickness) for guiding light are attached to the first steps 54 of the first frame 52 (2 mm in height of the first steps 54), and the second diffusion strips 72 (2 mm in width and 1mm in thickness) for guiding light are attached to the first steps 54 of the second frame 53 (2 mm in height of the first steps 54).
Step 400: the first liquid crystal panel 21 is placed at the edge of the first frame 52, and glue is injected into the first liquid crystal panel 21 and the edge of the first frame 52, and uniform pressure is applied to ensure tight compression joint.
Step 500: and assembling other mechanism parts to obtain the frameless full-view double-sided liquid crystal display screen 1.
The present embodiment can satisfy all double-sided liquid crystal display 1 products without the bezel 58 with BM >1 mm. The size of the middle frame 51 can be adjusted according to the BM width.
The second case corresponds to the case where the light guide plate 10 has a multi-layer structure, and the steps 200 to 500 are the same as the first case, except that in step 100, before attaching the optical film assembly to the light guide plate 10, the method further includes:
the surface of the first light guide layer 16 (1.5T of PMMA, MS, GLASS, PS, etc.) and the second light guide layer 18 (1.5T of PMMA, MS, GLASS, PS, etc.) was cleaned, the intermediate layer 17 (material of OCA, Haze 50%, thickness of 0.3mm) was first attached to the first light guide layer 16, and then the first light guide layer 16 and the second light guide layer 18 to which the intermediate layer 17 was attached were attached, and defoaming treatment was performed (temperature 40 ℃; pressure 0.45 Mpa; time 30 min).
Example 2
As shown in fig. 7, the present embodiment provides a double-sided liquid crystal display panel having a structure substantially the same as that of the double-sided liquid crystal display panel of embodiment 1 except that: the middle frame 51 in the present embodiment is not an integral structure, and is a first frame body 52 and a second frame body 53 that are separated; the double-sided liquid crystal display panel 1 further includes a support member 57, the support member 57 is disposed along the outer peripheral edges of the side portions of the first liquid crystal panel 21 and the second liquid crystal panel 22, and the middle frame 51 is fixed to the support member 57, that is, the first frame body 52 and the second frame body 53 are respectively fixed to the support member 57 through the black double-sided tape 82.
The manufacturing process of the double-sided liquid crystal display panel 1 in this embodiment is substantially the same as the manufacturing process of the double-sided liquid crystal display panel 1 in embodiment 1, except that, between step 300 and step 400, the method further includes the steps of: the first frame body 52 and the second frame body 53 are bonded to each other with the black double-sided tape 82.
The double-sided liquid crystal display 1 of the present embodiment is a double-sided liquid crystal display 1 product having no frame 58 and satisfying BM >1 mm. The size of the middle frame 51 and the support 57 can be adjusted according to the width of BM.
Example 3
As shown in fig. 8, the present embodiment provides a double-sided liquid crystal display panel having a structure substantially the same as that of the double-sided liquid crystal display panel of embodiment 1 except that: in the present embodiment, the first liquid crystal panel 21 is attached to the first optical film assembly 41 by an optical adhesive, and similarly, the second liquid crystal panel 22 is attached to the second optical film assembly 42 by an optical adhesive, thereby forming an integrated structure. Thus, the double-sided liquid crystal display screen 1 can be made thinner and lighter and has higher mechanical strength. Wherein, the optical cement is OCA cement 83.
When the integrated structure is adopted, the optical film material attached to the liquid crystal panel adopts a glass diffusion plate, the thickness is 0.8mm-1mm, the glass diffusion plate is thick, the mechanical strength is high, the surface is rough, poor attachment caused by the soft characteristic of the surface of a common membrane can be avoided, and the bonding strength with the liquid crystal panel is improved. The liquid crystal panel is attached to the light guide plate 10 and the diaphragm structure of the integrated structure by OCA glue 83, and the thickness of the OCA glue 83 is 0.25-0.5 mm.
The outer periphery of the sides of the overall unitary structure is secured by a rim 58.
The manufacturing process of the double-sided liquid crystal display panel 1 in this embodiment has the following two conditions:
the first case corresponds to the case where the light guide plate 10 is a light-scattering light guide plate 10, and includes the steps of:
step 100': in a light scattering light guide plate 10 (thickness 3mm, PMMA, doped with SiO)2The particle, the particle diameter is 3um, and doping concentration is 0.3 wt%) adopts many syringe needles formula coating double-sided glue (the material is OCR, thickness is 0.05mm), and the optics diaphragm subassembly is leveled through robotic arm and is put on the glue surface, adds suitable pressure (0).45Mpa) and then held for a period of time (30 min). The diffusion sheet 44, the lower prism sheet, the upper prism sheet 43, the quantum dot film and the brightness enhancement film are sequentially attached, and the first optical film assembly 41 and the second optical film assembly 42 are attached in the same manner.
Step 200': the first liquid crystal panel 21, the second liquid crystal panel 22, and the corresponding glass diffusion plates were cleaned, and the release film of OCA glue 83 (thickness 0.25mm, transmittance 95%) was peeled off, aligned, and the OCA glue 83 was attached to the surface of the glass diffusion plate.
Step 300': the first liquid crystal panel 21 and the second liquid crystal panel 22 were aligned with the glass diffusion plate to which the OCA glue 83 was applied, and the release film was peeled off and defoamed (temperature 50 ℃, pressure 0.45Mpa, time 15 min).
Step 400': and coating water glue on the surface of the glass diffusion plate to which the liquid crystal panel is attached, aligning the light guide plate 10 to which the first optical film assembly is attached with the light guide plate, and maintaining the pressure (the pressure is 0.45 Mpa; the time is 30min), wherein the attaching modes of the first optical film assembly 41 and the second optical film assembly 42 are consistent.
Step 500': and assembling other mechanism parts to obtain the integrated double-sided liquid crystal display screen 1.
In the second case, when the light guide plate 10 has a multi-layer structure, the steps 200 'to 500' are the same as those in the first case, and the differences are the same as those mentioned in embodiment 1, and will not be described again.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (11)
1. A two-sided liquid crystal display, the two-sided liquid crystal display comprising:
the light guide plate is provided with a first light emitting surface and a second light emitting surface which are oppositely arranged, and a plurality of side surfaces of which two ends are respectively adjacent to the first light emitting surface and the second light emitting surface, wherein at least one side surface is a light incident surface;
the first liquid crystal panel is arranged on the outer side of the first light-emitting surface, and the second liquid crystal panel is arranged on the outer side of the second light-emitting surface;
the light source is arranged adjacent to the light inlet face, and light emitted by the light source enters the first liquid crystal panel through the first light outlet face and enters the second liquid crystal panel through the second light outlet face after entering the light inlet face;
the first optical film component is arranged between the light guide plate and the first liquid crystal panel and fixed on the first light-emitting surface through a first glue layer, and the second optical film component is arranged between the light guide plate and the second liquid crystal panel and fixed on the second light-emitting surface through a second glue layer.
2. The dual-sided liquid crystal display panel of claim 1, further comprising a middle frame, the middle frame comprising a first frame body and a second frame body disposed opposite to each other;
the first frame body is arranged on one surface, far away from the light guide plate, of the first optical film assembly along the periphery of the first optical film assembly, at least part of the first frame body is located outside the periphery of the first optical film assembly, the first liquid crystal panel is fixed to one end, far away from the first optical film assembly, of the first frame body along the thickness direction, and a first gap is formed between the first liquid crystal panel and the first optical film assembly;
the second frame body is arranged on one surface, away from the light guide plate, of the second optical film assembly along the periphery of the second optical film assembly, at least part of the second frame body is located outside the periphery of the second optical film assembly, the second liquid crystal panel is fixed to one end, away from the second optical film assembly, of the second frame body in the thickness direction, and a second gap is formed between the second liquid crystal panel and the second optical film assembly.
3. The dual-sided liquid crystal display panel of claim 2, wherein the middle frame further comprises a connecting portion connected between the first frame body and the second frame body, and the first frame body, the second frame body and the connecting portion are integrally formed.
4. The dual-sided liquid crystal display panel of claim 2, further comprising a support member disposed along outer peripheries of side portions of the first liquid crystal panel and the second liquid crystal panel, the middle frame being fixed to the support member.
5. The double-sided liquid crystal display panel of claim 2, wherein the first frame body and the second frame body each have a step structure from a position close to the light guide plate to a position away from the light guide plate, the first frame body and the second frame body each include a first step and a second step stacked, the first step has a larger width than the second step, and the second step is disposed at an end close to an outer edge of the first step;
the bottom surface of the first step of the first frame body is tightly attached to the first optical film assembly, and the bottom surface of the first step of the second frame body is tightly attached to the second optical film assembly.
6. The two-sided liquid crystal display panel of claim 5,
the first frame body and the second frame body are both white; and/or the presence of a gas in the gas,
the double-sided liquid crystal display screen also comprises a first diffusion strip, and the first diffusion strip is positioned between the first step of the first frame body and the first liquid crystal panel; and/or the presence of a gas in the gas,
the double-sided liquid crystal display screen further comprises a second diffusion strip, and the second diffusion strip is located between the first step of the second frame body and the second liquid crystal panel.
7. The double-sided liquid crystal display panel of claim 6,
the height of the first step is 1mm-2 mm; and/or the presence of a gas in the gas,
the thickness of the first diffusion strip and the second diffusion strip is 1mm-2mm, and the width of the first diffusion strip and the second diffusion strip is 2mm-3 mm.
8. The double-sided liquid crystal display panel of any of claims 2-7,
the first liquid crystal panel and the second liquid crystal panel are respectively fixed on the first frame body and the second frame body through a dispensing process; the thickness of the adhesive is 1mm-1.5 mm.
9. The double-sided liquid crystal display panel of any of claims 1-7, wherein the light guide plate is a light-scattering light guide plate; and/or the presence of a gas in the gas,
the light guide plate is including the first leaded light layer, intermediate level and the second leaded light layer of overlapping in proper order establishing along thickness direction, first leaded light layer and second leaded light layer pass through the intermediate level bonding is as an organic whole, just but intermediate level reflection light, first leaded light layer with second leaded light layer is close to the one side in intermediate level all is equipped with the site.
10. The dual-sided liquid crystal display panel of any of claims 1-7, wherein the first and second optical film assemblies each comprise a diffuser, a lower prism sheet, an upper prism sheet, a quantum dot film, and a brightness enhancement film, from the direction of approaching the light guide plate to the direction of departing the light guide plate, and the diffuser, the lower prism sheet, the upper prism sheet, the quantum dot film, and the brightness enhancement film are sequentially laminated via a glue layer.
11. The dual-sided liquid crystal display of any of claims 1-7, further comprising a first cover plate disposed on an outer side of the first liquid crystal panel and a second cover plate disposed on an outer side of the second liquid crystal panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222371.XU CN214540295U (en) | 2021-01-25 | 2021-01-25 | Double-sided liquid crystal display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120222371.XU CN214540295U (en) | 2021-01-25 | 2021-01-25 | Double-sided liquid crystal display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214540295U true CN214540295U (en) | 2021-10-29 |
Family
ID=78312325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120222371.XU Active CN214540295U (en) | 2021-01-25 | 2021-01-25 | Double-sided liquid crystal display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214540295U (en) |
-
2021
- 2021-01-25 CN CN202120222371.XU patent/CN214540295U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4575486B2 (en) | Display device | |
| CN111258104B (en) | Display device and manufacturing method thereof | |
| CN101975371B (en) | Lower diffusion film, backlight module and display | |
| US20120127697A1 (en) | Optical sheet and method of manufacturing the same | |
| EP3382449B1 (en) | Display device | |
| TWI392899B (en) | Light concentrating sheet, backlight unit including the light concentrating sheet and liquid crystal display module including the backlight unit | |
| JP2014026282A (en) | Combined light guide plate and display device | |
| KR20120115897A (en) | Optical plate, display having the same, and method of manufacturing the optical plate | |
| WO2023160643A1 (en) | Display module and display device | |
| CN101592754A (en) | Optical sheet, back light unit and LCD | |
| EP2128662A1 (en) | Optical sheet, backlight unit, and liquid crystal display | |
| CN106054469B (en) | Ultra-thin liquid crystal display | |
| KR20130039463A (en) | Multi-sheet for back light unit and method thereof | |
| KR20150050050A (en) | A monolithic optical sheet and liquid crystal display device including the same | |
| CN111458918A (en) | Display device | |
| CN214540295U (en) | Double-sided liquid crystal display screen | |
| CN108663842B (en) | Liquid crystal display panel, display device and manufacturing method thereof | |
| CN116107000A (en) | Quantum dot composite brightness enhancement film, preparation method thereof and backlight display device | |
| CN113448008A (en) | Composite light guide plate structure and backlight module | |
| KR102113631B1 (en) | Liquid crystal display device and method for fabricating the same | |
| US20140212645A1 (en) | Optical composite sheet | |
| CN105739183A (en) | Backlight source, backlight module and manufacturing method thereof as well as display device | |
| CN212933028U (en) | Laminating type prism piece | |
| KR101264725B1 (en) | Display Device | |
| JP4388178B2 (en) | Liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |