50 results about "Optical membrane" patented technology

The invention provides a liquid crystal display. The liquid crystal display comprises a back plate; a light emitting diode chip; the diffusion plate is arranged on the light emitting diode chip; an optical film disposed on the diffusion plate; and a liquid crystal display panel. And the thicknesses of the first welding electrode and the second welding electrode of the light-emitting diode chip are 1-50 microns. The liquid crystal display panel comprises an array substrate; the color film substrate and the array substrate are arranged in a box-to-box manner; the color film substrate and the array substrate are pasted through the rubber frame to form a box body space, and the width of the rubber frame is gradually increased from one side of the color film substrate to one side of the array substrate in the section direction of the liquid crystal panel; and the liquid crystal layer is arranged in the box body space. The display quality of the liquid crystal display can be improved.

The invention provides a liquid crystal display. The liquid crystal display comprises a back plate; a light emitting diode chip; the diffusion plate is arranged on the light emitting diode chip; an optical film disposed on the diffusion plate; and a liquid crystal display panel. The liquid crystal display panel comprises an array substrate; the color film substrate and the array substrate are arranged in a box-to-box manner; the color film substrate and the array substrate are pasted through the rubber frame to form a box body space, and the width of the rubber frame is gradually increased from one side of the color film substrate to one side of the array substrate in the section direction of the liquid crystal panel; and the liquid crystal layer is arranged in the box body space. The display quality of the liquid crystal display can be improved.

The present invention discloses a backlight module with adjustable light emission angle and a control method thereof, which relates to the technical field of mobile phone backlight modules, and includes a housing, a diffusion film, a light guide plate, an optical film and a lamp tube device, wherein the lamp tube device is installed on the left side of the inner wall of the housing, and the light guide plate is installed on the top of the lamp tube device. The present invention provides a connection limit mechanism to cooperate with a support adjustment mechanism to stably limit and buffer the optical film, and then uses a mobile adjustment mechanism to stably adjust the inclination of the optical film by cooperating with the connection limit mechanism and the support adjustment mechanism, and controls the adjustment inclination of the optical film by an adjustment detection mechanism, thereby solving the problem that the light emission angle of the existing backlight module is directly fixed during production and cannot be adjusted according to the use requirements in subsequent use, which results in the need to disassemble and reinstall the backlight module when the light emission angle needs to be adjusted, causing inconvenience in use and reducing the use effect of the backlight module.

An optical laminate including an adhesive layer, a light interference layer, and two or more laminated reflective layers in this order, in which the laminated reflective layer includes one reflective layer A that includes one or more cholesteric liquid crystal layers consisting of a rod-like liquid crystal, and one reflective layer B that includes one or more cholesteric liquid crystal layers consisting of a disk-like liquid crystal, in a case where the reflective layers A face each other or the reflective layers B face each other in adjacent laminated reflective layers, reflection center wavelengths of the adjacent reflective layers are different from each other.

Provided is an optical film requirement that does not use fine particles for light diffusion, is entirely composed of a transparent resin, and has a self-moire pattern that cannot be visually recognized by the naked eye, said optical film requirement having high front brightness without luminance unevenness on the light emission surface of a backlight when mounted on an edge-light backlight. A light-collecting auxiliary film inserted between the light emission surface of a light guide plate and the light incidence surface of a brightness enhancement film (BEF) in an edge-light backlight unit using discrete LED point light sources, the light-collecting auxiliary film being characterized by comprising: an optical waveguide layer comprising a light-transmitting base film, and a light-collecting layer comprising a light-transmitting base film, the light-collecting auxiliary film being interposed between the light emission surface of the light guide plate and the light incidence surface of the brightness enhancement film (BEF), the light-collecting auxiliary film being interposed between the light-emitting surface of the light guide plate and the light incidence surface of the brightness enhancement film (BEF); a light extraction layer that is formed on one surface of the optical waveguide layer and has a plurality of inverted rectangular pyramid-shaped unit recesses; and a light introduction layer formed on the other surface of the optical waveguide layer and having a plurality of unit triangular prisms extending in parallel in one direction, the light extraction layer constituting a light emission surface, and prism surfaces of the plurality of unit triangular prisms constituting the light introduction layer constituting a light incidence surface. The direction of the ridge lines of the plurality of unit recesses and the direction of the ridge lines of the plurality of unit triangular prisms intersect at an angle of 42 DEG to 48 DEG, and the light extraction layer, the optical waveguide layer, and the light introduction layer do not contain fine particles for light diffusion. The self-moire pattern generated by the plurality of unit recesses and the plurality of unit triangular prism lenses cannot be visually recognized by naked eyes.

The present invention proposes a large-area direct-type backlight module that can compensate for edge brightness, including a light guide plate, a corner-entry backlight source, a side-entry backlight source, an edge reflector, a direct-type backlight module, a reflective sheet, and an optical film. A semi-ellipsoidal concave microstructure is arranged at the bottom of the light guide plate, and a direct-type light source is arranged at the center of the microstructure. The light guide plate is de-cornered, and the four corners are polished to form a flat light incident surface. A corner-entry light source is arranged, and a side-entry backlight source is placed at a location where the illumination of the four sides is relatively low. In the backlight module provided by the present invention, the direct-type light source is arranged at the center of the microstructure, which reduces the thickness of the backlight module and increases the uniformity of light output. The arrangement of the corner-entry light source and the side-entry light source solves the problems of uneven edge brightness in the existing direct-type backlight display device, excessive power consumption, and insufficient heat dissipation due to excessive use of LED light sources.

The present invention discloses a backlight module for Mini LED and a fixing structure thereof, the backlight module comprising: a backlight source, a base, a light guide plate and an optical film, a receiving cavity is provided in the base, an inner arch platform is provided inside the receiving cavity, and a recessed structure is formed on the bottom surface of the base, and a plurality of convex ribs are provided at the recessed structure. The backlight source comprises a substrate plate and a plurality of LED lamp beads, and the substrate plate is fitted with the inner arch platform. The light guide plate and the optical film are stacked on the LED lamp beads of the backlight source. The module fixing structure also comprises: a first inner bracket, a second inner bracket, an outer frame and a positioning plug, the first inner bracket and the second inner bracket are both slidably provided in the receiving cavity, and the two slide close to each other to clamp the light guide plate and the optical film. The backlight module and the fixing structure thereof of the present invention can improve the overall heat dissipation capacity, and facilitate the installation and disassembly operations of the backlight module, thereby improving product quality and extending its service life.

The application relates to the technical field of display screens, in particular to a liquid crystal display screen and electronic equipment. The liquid crystal display screen comprises a backlight module, the backlight module comprises a light source, the light source comprises a light emitter and first fluorescent powder, the light emitter can emit blue light, and the first fluorescent powder is filled on the light emitting side of the light emitter; an optical film is arranged on the propagation path of the blue light emitted by the light source, the optical film is filled with second fluorescent powder, the heat resistance of the second fluorescent powder is weaker than that of the first fluorescent powder, and the distance between the second fluorescent powder and the light emitter is greater than the distance between the first fluorescent powder and the light emitter; one of the first fluorescent powder and the second fluorescent powder is green fluorescent powder, and the other is red fluorescent powder. The application can reduce the problems of brightness attenuation and color drift of the liquid crystal display screen after long-term use.

The invention discloses a backlight module and a display device, the display device comprises the backlight module and a liquid crystal display panel, the liquid crystal display panel is arranged on the light emitting side of the backlight module, and the backlight module comprises a back plate, a light bar, a polarization light guide plate and an optical film; the back plate comprises a bottom plate and side plates, and the side plates and the bottom plate are connected to define a containing cavity; the light bar is fixed with the side plate and comprises a plurality of polarized light-emitting devices which are arranged at intervals; the polarization light guide plate is arranged in the containing cavity, and the light inlet side of the polarization light guide plate is close to the light outlet side of the light bar. The optical film is arranged on the side, away from the bottom plate, of the polarization light guide plate and comprises a polarization-maintaining base material layer, and the polarization axis of the polarization-maintaining base material layer is parallel to the polarization axis of linearly polarized light emitted by the polarization light-emitting device. The light emitting efficiency of the display device can be improved.

The utility model discloses an ultrathin liquid crystal display device based on a blue light COB and a multi-partition quantum material, which comprises a liquid crystal display panel, a composite optical film, a quantum diffusion plate, a back plate, reflection paper and a light-emitting chip matrix which are sequentially attached together, the reflection paper is attached to the back plate, and the light-emitting chip matrix is installed on the surface of the reflection paper; the light-emitting chip matrix on the back plate comprises a short-distance light mixing area and a long-distance light mixing area, and the light mixing distance of the short-distance light mixing area is smaller than the light mixing distance of the long-distance light mixing area; the quantum diffusion plate is provided with a low-concentration quantum region and a high-concentration quantum region; and the quantum diffusion plate corresponds to the light-emitting chip matrix surface of the back plate. The multi-light-mixing-distance blue-light COB light source, the size-differentiated light source and dynamic backlight control are adopted, high-color-gamut expression is achieved, the brightness uniformity of the display device is improved, the color difference of a light-mixing connection band is eliminated through the concentration gradual change design of quantum dot materials, and the brightness uniformity is obviously improved.

The utility model discloses a side-in type backlight module and a liquid crystal display device, and relates to the technical field of display devices.The side-in type backlight module comprises a back plate, a light bar and an optical film, the back plate comprises a back plate body and an installation section extending in the thickness direction of the back plate body, and the light bar is arranged on the installation section; the mounting section is provided with a connecting and fixing structure connected with the light bar, the connecting and fixing structure comprises a connecting block and an abutting part arranged on the connecting block, the connecting block is inserted into a matching hole of the light bar, and the abutting part abuts against the end, away from the mounting section, of the light bar, so that the light bar is mounted on the back plate. The lamp strip and the back plate are connected and fixed in a matched mode, the dislocation phenomenon is avoided, the probability of reworking and reworking is reduced, operation is convenient, disassembly is easy, and the extra manufacturing cost can be reduced.

The invention relates to the field of intelligent wearable equipment, and discloses intelligent sleeve glasses type multifunctional liquid crystal dimming glasses which comprise a glasses frame, glasses legs are fixedly connected to the two sides of the glasses frame, a color adjusting assembly is fixedly connected to the outer portion of the glasses frame, a shell is fixedly connected to the outer portions of the glasses legs, and an interaction assembly is installed in the shell. The shell is used for communicating with a mobile terminal APP and customizing the light transmittance, and a modularized light color self-adaption and audio enhancement integrated system is installed in the shell. The light color sensing module is arranged to collect ambient light intensity and spectral information in real time, a multi-layer color adjusting assembly composed of a red dye liquid crystal layer, a blue dye liquid crystal layer and a neutral gray light reducing film is combined, and a light color compensation algorithm integrated in the central processing module is used for cooperative operation. The driving voltage of the three layers of optical films can be dynamically adjusted according to specific color temperature characteristics of ambient light and user setting, so that color cast is compensated while brightness is adjusted.

The utility model discloses a general ultra-narrow extrusion frame display structure compatible with various display screens. The general ultra-narrow extrusion frame display structure mainly comprises a frame, a heat-conducting double-faced adhesive tape, a light bar, a back plate, a screw, a reflector plate double-faced adhesive tape, a reflector plate, a light guide plate, an L-shaped silica gel limiting pad, a diaphragm double-faced adhesive tape, an optical diaphragm, a shading adhesive tape, a VHB double-faced adhesive tape, full-lamination liquid crystal glass, a main board and a rear shell. The four frames are sequentially locked and attached through screws, and the cross section of each frame is of a light guide plate pressing structure and is provided with a frame limiting groove, a frame light guide plate pressing structure and a frame VHB double-faced adhesive tape bonding structure. Different cross section shapes are designed for the frame, the width of the frame on the periphery of the non-display area can be reduced, and the frame of the whole machine structure is made to be extremely narrow. The frame is designed to be of a pressing light guide plate structure, a middle frame structural part can be removed, the cross section structure of the frame is designed to be of a bonding full-fitting liquid crystal glass structure with the front shell function in the screen assembly, a front shell structural part can be removed, resource use is reduced, and cost is reduced.

A display device (1), relating to the technical field of display. The display device (1) comprises a backplane (20), a liquid crystal panel (30), and a fixing structure (10) located between the backplane (20) and the liquid crystal panel (30). Two ends of the fixing structure (10) are respectively attached to the liquid crystal panel (30) and the backplane (20); the display device (1) further comprises an optical film (40), the fixing structure (10) and the backplane (20) define a mounting slot (13), and the edge portion of the optical film (40) is embedded in the mounting slot (13). The display device (1) simplifies the production process and reduces the cost of the product.

The present application discloses a display device and a backlight module, belonging to the field of display technology. The display device includes: a backlight module, a liquid crystal display panel and a chip-on-chip film. The backlight module may include: a frame, and a side-entry light source, a light guide plate, a reflective strip, a light absorbing strip and an optical film located in the frame. Since there is no bonding relationship between the light absorbing strip and the diffuser in the optical film, and there is a bonding relationship between the reflective strip and the diffuser in the optical film, after the chip-on-chip film is bent and bonded to the side of the frame in the backlight module away from the liquid crystal display panel, under the action of the rebound force of the bent part of the chip-on-chip film, the diffuser will not move with the displacement of the light absorbing strip, but will move with the light absorbing strip following the displacement of the light guide plate. It is ensured that the light guide plate and the diffuser will not separate, thereby improving the light output effect of the backlight module.

To provide an optical film which is excellent in transparency and heat resistance and which can suppress blocking when a film roll is stored.SOLUTION: An optical film includes: an acrylic resin film mainly made of an acrylic resin; and an easy adhesive layer formed on the acrylic resin film. The acrylic resin has syndiotacticity of 54% or more at triad display. The acrylic resin film has a glass transition temperature of 120°C or more. The sum of 10-point average roughness Rzjis on each of both sides of the optical film is 0.05 μm or more and 1.0 μm or less.SELECTED DRAWING: None

The application discloses a narrow-frame high-screen-ratio full-screen liquid crystal display panel, and relates to the field of liquid crystal display panels, which comprises an outer frame, the inner wall of the outer frame is provided with a glass cover plate, the bottom surface of the glass cover plate is provided with an upper polaroid, the bottom surface of the upper polaroid is provided with a liquid crystal display module, the bottom surface of the liquid crystal display module is provided with an optical film group, and the bottom surface of the optical film group is provided with a glass light guide plate. The outer frame is buckled with the bottom frame, the glass cover plate is seamlessly attached with the polaroid, the frame width is shortened, the lower frame is folded and attached to the back of the backlight by means of the L-shaped flexible circuit board, the outer space is not occupied, the width is further reduced, the screen ratio is improved to 100%, three groups of LED light bars of the backlight driving layer adopt three-side light input, the length occupied by the lower light bar is reduced, and the frame redundancy caused by the dispersion of traditional LCD elements is eliminated.

The utility model discloses a backlight display module for improving the mura problem of the module at the end corner position, which comprises an iron frame, a light guide plate, a display assembly, an optical film material assembly and an LED lamp, the light guide plate, the display assembly and the LED lamp are all installed inside the iron frame, and the optical film material assembly is installed between the light guide plate and the display assembly. According to the backlight display module for improving the mura problem of the module at the end corner positions, the light guide plate is divided into two areas with different light-emitting requirements, namely the middle light-emitting area and the four end corner light-emitting areas, and the whole-surface uniform light-emitting design is still carried out according to the number of the LED lamps and the lamp distance in the middle position; and from the newly divided four end corner light-emitting areas, the brightness of the four end corner areas of the light guide plate can be transited from bright to dark by gradually reducing the light guide lattice points on the light guide plate from inside to outside, so that the problem that the module assembly turns white at the lower end corner position of a black UI picture is solved, and the sensory effect of a client is improved.

The present invention discloses a display device and a backlight module, wherein the backlight module comprises a frame and an optical film, wherein the frame comprises a bottom plate and a side plate, wherein a containing cavity is formed between the bottom plate and the side plate, wherein the side plate is provided with a connecting channel, wherein one end of the connecting channel is connected to the containing cavity, and the other end of the connecting channel is connected to the outside of the backlight module; and further comprises an elastic switch component, wherein the elastic switch component is installed on the side plate, wherein the connecting channel has an open state and a closed state, wherein the elastic switch component can be elastically deformed between the open state and the closed state under the action of the pressure difference on both sides of the connecting channel; in the open state, the connecting channel connects the containing cavity and the outside of the backlight module to balance the pressure; in the closed state, the connecting channel isolates the containing cavity and the outside of the backlight module to prevent impurities such as water vapor from entering the containing cavity.

The embodiment of the utility model provides an optical film assembly, a backlight module and a display device, and the optical film assembly comprises an optical film which comprises a first prism layer; the polaroid comprises a body diffusion layer, air holes are formed in the body diffusion layer so as to reflect and refract light rays, and at least one side face of the body diffusion layer is a flat surface so as to be tightly connected with the first prism layer. The air holes in the diffusion layer are used in the polaroid to diffuse light rays, existing diffusion coating particles are replaced, the particles can be prevented from scratching the prism layer, and therefore the probability that the optical film is abraded is reduced, optical devices are reduced on the basis that the optical index requirement of the polaroid is guaranteed, and the thickness of the backlight module is reduced.

The utility model provides a vehicle-mounted backlight module for preventing a light guide plate from shifting, comprising a lower frame, a reflective film, a light guide plate, an optical film, a tape and a plurality of flexible parts, wherein the reflective film is arranged in the lower frame, the light guide plate is arranged on the reflective film, the tape is a first tape and a second tape, the first tape and the second tape are arranged opposite to each other, the first tape and the second tape are respectively fixedly connected between the light guide plate and the lower frame, each of the flexible parts is arranged between the light guide plate and the lower frame, the flexible part is provided with a plurality of protrusions, each of the protrusions is interference fit with the light guide plate, and the optical film is arranged on the light guide plate. The vehicle-mounted backlight module for preventing a light guide plate from shifting of the utility model can solve the problems of light guide plate shifting and wrinkles on the reflective film existing in the prior art, and improve the quality of the vehicle-mounted backlight module. The utility model also relates to a vehicle-mounted display device.

The utility model provides a light field 3D ophthalmology training display instrument which comprises an island-type shell body, a cover plate glass body is arranged on one side of the island-type shell body, a 3D display screen is arranged between the island-type shell body and an opening of the island-type shell body, a driving plate is arranged in the island-type shell body, and the driving plate is connected with the cover plate glass body. And a computer host is arranged at the bottom of the island-type shell main body. According to the utility model, the 3D lens optical film is attached to the transparent glass substrate, the 3D lens optical film is designed according to the characteristics of the 2D liquid crystal glass, the thickness and the optical refractive index of the transparent glass substrate are designed according to the characteristics of the 3D lens optical film and the 2D liquid crystal glass, and then the attached 3D module and the 2D liquid crystal module are fully attached together. A full-lamination naked-eye 3D screen module screen is formed, so that the 3D display screen can carry out three-dimensional display on images.

The utility model discloses a display module for optimizing display effect, comprising: a display module body, the display module body comprising a cover plate, a display screen and a backlight module arranged in sequence, the cover plate being located directly above the display screen, the display screen being accommodated in the backlight module, and an optical film for reducing the re-reflection rate of incident light being arranged between the cover plate and the display screen. The display module has the effect of adding an optical film between the cover plate and the display screen to reduce the re-reflection rate of incident light, thereby improving the aesthetics of the product.

The utility model discloses a direct type liquid crystal display module structure that improves LED lamp panel heat dissipation efficiency, including aluminium profile bottom frame, aluminium profile middle frame, aluminium profile front frame, aluminium profile bottom frame includes first horizontal plate, inclined plate, first vertical plate, first horizontal plate surface one side is fixed with the inclined plate, the first vertical plate is fixed with the inclined plate upper end, first vertical plate lower end is fixed with the inclined plate lower end, first vertical plate lower end is fixed with the first vertical plate lower end, first vertical plate lower end is fixed with the first vertical plate lower end, first vertical plate lower end is fixed with the first vertical plate lower end, first vertical plate lower end is fixed with the first vertical plate lower end. An LED lamp panel mounting plane is arranged at the upper end of the first transverse plate, an LED lamp panel body is arranged at the upper end of the LED lamp panel mounting plane, a first screw is arranged between the LED lamp panel body and the LED lamp panel mounting plane, and a middle frame mounting groove is formed in one side of the first vertical plate. And an optical film material positioning block is arranged on one side of the middle frame mounting groove on the surface of the first vertical plate. According to the LED lamp panel, heat generated when the LED lamp panel body works is dissipated outwards through the back face of the LED lamp panel body, no other heat transfer structure is needed, and therefore the heat dissipation effect can be greatly improved.

The disclosed embodiments provide a backlight module and a manufacturing method thereof, and a display device, which relate to the field of display technology and can reduce the probability of relative displacement of some optical films. The backlight module includes a composite layer, and the composite layer includes a light guide layer and a first substrate that are relatively arranged, and a plurality of first microprisms and a plurality of second microprisms located between the light guide layer and the first substrate. The plurality of first microprisms are located on a side surface of the light guide layer close to the first substrate, and the extension directions of the plurality of first microprisms are all parallel to the first direction. The plurality of second microprisms are located on a side surface of the first substrate close to the light guide layer, and the extension directions of the plurality of second microprisms are all parallel to the second direction. The first microprism is fixedly connected to the second microprism.

The utility model discloses a kind of double-sided light type backlight module, comprising: backplate;Two groups of LED light bar are oppositely arranged in two inner side walls of backplate;Reflective sheet, light guide plate and optical film piece are sequentially placed in backplate and between two groups of LED light bar;Reflective sheet, light guide plate and optical film piece are centrally arranged between two groups of LED light bar.The utility model can make the light emitted by two groups of LED light bar evenly reflect via reflective sheet, then emit via light guide plate and optical film piece, so as to realize the uniform light emission of backlight module, to ensure the display quality of liquid crystal display.

The application provides a liquid crystal display, which comprises a back plate, a light emitting diode chip, a diffusion plate arranged on the light emitting diode chip, an optical film arranged on the diffusion plate, and a liquid crystal display panel. The liquid crystal display panel comprises an array substrate, a color film substrate arranged in a cell with the array substrate, a frame for bonding the color film substrate and the array substrate to form a cell space, and a liquid crystal layer arranged in the cell space. The width of the frame gradually increases from one side of the color film substrate to one side of the array substrate in the cross-section direction of the liquid crystal panel. The application can improve the display quality of the liquid crystal display.

The utility model discloses a liquid crystal display screen capable of improving heating effect, which comprises a lower frame, a reflector plate, a light guide plate and an optical film group which are sequentially overlapped from bottom to top, the lower frame comprises a bottom plate and a side wall extending upwards from the edge of the bottom plate, the side wall is provided with a step, and the step is arranged on the side wall. The upper surface of the side wall located at the step is provided with buffer foam, heating glass is arranged above the buffer foam, the upper surface of the heating glass is provided with a first heating ITO plating layer, the lower surface of the heating glass is provided with a second heating ITO plating layer, and a display module is arranged above the heating glass. Due to the fact that the two-face heating ITO plating layers are arranged, the heating efficiency is doubled, the liquid crystal display screen can adapt to the low-temperature using environment, it is guaranteed that the heating efficiency is higher than the heat dissipation efficiency, the situation that the liquid crystal display screen cannot work normally is avoided, and the competitiveness of products is improved.

The utility model relates to a direct type backlight module and a liquid crystal display device. The direct type backlight module comprises a light source assembly and an optical film assembly, the light source assembly comprises a substrate and a plurality of light-emitting parts, and the light-emitting parts are arranged on the substrate in an array mode and used for emitting light. The optical film assembly comprises a diffusion film, and the diffusion film is arranged on the light-emitting side of the light-emitting part and is parallel to and opposite to the substrate. The diffusion film is provided with a first diffusion surface and a second diffusion surface, the first diffusion surface faces the light-emitting part, and the second diffusion surface deviates from the light-emitting part; the first diffusion surface is provided with a first frosted area and a second frosted area, the first frosted area is used for diffusing light rays in an area with relatively high light intensity, and the second frosted area is used for diffusing light rays in an area with relatively low light intensity. According to the backlight module, an area light source with high brightness and more ideal uniformity can be obtained without additionally arranging components, and the cost and the thickness of the backlight module can be well controlled.

The utility model relates to the technical field of metal plates, and discloses an ultra-narrow-edge thin direct type liquid crystal display module splicing aluminum profile frame structure which comprises an aluminum profile bottom frame, the aluminum profile bottom frame comprises a plurality of first vertical plates, first transverse plates are integrally machined among the first vertical plates, one side of each first vertical plate is fixedly provided with a step, and the first transverse plates are integrally machined among the first vertical plates. A positioning hanging buckle is integrally machined on one side of the first vertical plate, a first containing platform is arranged on one side of the first vertical plate, a bevel edge is machined on one side of the first vertical plate, and a bottom hole is formed in the middle of the inner side of the first vertical plate. And the LED lamp panel is installed on the top of the back aluminum plate through second screws, after the LED lamp panel is installed, the diffusion plate is installed on the top of the first containing platform, then the optical film material is installed on the top of the diffusion plate through the positioning hanging buckles, and therefore installation is convenient.