Waterproof multi-layer display device of liquid crystal display module and installation method

Abstract

The waterproof multi-layer display device comprises a main display module, the main display module comprises a substrate, a liquid crystal layer, a conductive layer, a first base layer and a second base layer, the liquid crystal layer is arranged between the first base layer and the second base layer, the substrate is attached to the first base layer, the surface of the substrate is covered with a layer of flat conductive adhesive, and the conductive layer is arranged between the first base layer and the second base layer. The liquid crystal layer is injected between the first base layer and the second base layer in a filling manner, the second liquid crystal layer is filled between the conductive layer and the polarizing plate and is arranged between the conductive layer and the conductive adhesive, and the conductive adhesive and the conductive layer are separated from each other; the second liquid crystal layer is arranged between the conductive layer and the conductive adhesive, the conductive adhesive and the conductive layer are separated from each other, the conductive layer and the conductive adhesive are covered with a moisture-proof agent, the conductive layer applies voltage to the liquid crystal layer to change the crystal form of the liquid crystal layer, and the conductive layer covers the conductive adhesive to ensure the overall conductive sensitivity; the moisture-proof agent covering the surface of the conductive adhesive and hydrophobic groups of the moisture-proof agent form double barriers.

Description

Technical Field

[0001] The present invention relates to a liquid crystal display, in particular to a waterproof multi-layer display device of a liquid crystal display module and an installation method thereof. Background Art

[0002] In a liquid crystal display device, an electrode having a ground potential is provided on one substrate and a conductive layer provided on another substrate is electrically connected via a connector, and the conductive layer is in contact with a conductive adhesive adhered to the other substrate and a polarizing plate. In a liquid crystal display device having such a configuration, it is required to manage the resistance value of the conductive adhesive when the polarizing plate is adhered to the substrates.

[0003] In this liquid crystal display device, when moisture enters the adhesive surface between the conductive layer and the conductive glue, there is a risk that the conductive layer will be corroded by the entering moisture; In the liquid crystal display device, the image is displayed in a screen saver with a certain power when the display is in standby mode, so the main function of the screen saver becomes decoration or privacy protection. For the screen LED backlight module, it provides uniform background light, the liquid crystal molecules are deflected to adjust the amount of light transmittance, and the backlight is always on. For dynamic screen saver display, the power consumption is close to that of normal use, and is even slightly higher due to frequent refreshes, which increases its power consumption. Summary of the Invention

[0004] The present invention provides a waterproof multi-layer display device of a liquid crystal display module and an installation method thereof, which are used to solve the problem of moisture-proof corrosion of liquid crystal display devices and image energy saving of screen savers or standby displays.

[0005] According to one aspect of the present invention, a waterproof multi-layer display device of a liquid crystal display module is provided, characterized in that it includes: The main display module includes a substrate, a liquid crystal layer, a conductive layer, a first base layer, and a second base layer. The liquid crystal layer is disposed between the first base layer and the second base layer. The substrate is attached to the first base layer and covered with a flat conductive adhesive. The liquid crystal layer is injected between the first base layer and the second base layer in the form of a filling. The first liquid crystal layer is filled between the conductive adhesive and the conductive layer. A polarizing plate is disposed facing the second base layer through a conductive adhesive, a second liquid crystal layer is filled between the conductive layer and the polarizing plate, the second liquid crystal layer is disposed between the conductive layer and the conductive adhesive, and the conductive adhesive and the conductive layer are separated from each other, and the conductive layer and the conductive adhesive are covered with a moisture-proof agent; The first base layer includes a first transparent electrode and a second transparent electrode, and different voltages are provided between the first transparent electrode and the second transparent electrode respectively. When a voltage is applied to the first transparent electrode or the second transparent electrode, the liquid crystal of the liquid crystal layer is tilted or horizontal when an electric field is applied, allowing or blocking the pattern from passing through the liquid crystal layer.

[0006] Furthermore, the main display module includes a display area of ​​a liquid crystal layer for displaying images, and a peripheral area display device surrounding the display area, and the image display device is electrically connected to the main display module.

[0007] Furthermore, the moisture-proofing agent is fluororesin, olefin resin, urethane resin or acrylic resin.

[0008] Furthermore, the substrate is white.

[0009] Furthermore, the image display device includes a projection mechanism and an optical element. The optical element is relatively arranged as an inner arc along the main display module. The projection mechanism and the optical element are respectively arranged outside the display area and are relatively parallel.

[0010] Furthermore, the main display module further includes a sealing member for sealing the liquid crystal, and the adhesive is superimposed on the sealing member.

[0011] Furthermore, the thickness of the second base layer is greater than that of the first base layer.

[0012] Furthermore, the liquid crystal layer is sealed with a sealant between the first base layer and the second base layer by an adhesive, wherein a projection mechanism and an optical element are arranged parallel to the length direction of the main display module, the optical element having a first surface, the first surface being arranged toward the plane of the substrate, and the second surface of the optical element being arranged obliquely toward the second base layer; The formula for the law of refraction is: , represents the angle of incidence, represents the refraction angle, is the relative refractive index of the second medium to the first medium.

[0013] Furthermore, the waterproof multi-layer display device and installation method of the liquid crystal display module are characterized by comprising: S1: etching a first transparent electrode and a second transparent electrode on the first base layer, respectively, so that the first transparent electrode and the second transparent electrode are electrically connected to the liquid crystal layer; S2: Clean the flat substrate surface to remove dust, deposit or laminate a conductive layer on the substrate surface, and apply or screen-print a conductive adhesive on the surface of the conductive layer, keeping the substrate and the conductive adhesive separated; S3: Spray nano moisture-proof agent evenly on the surface of the conductive layer and conductive adhesive to form a 5-10μm protective film, forming a continuous covering film layer to prevent water vapor penetration; S4: Evenly apply conductive adhesive on the surface of the polarizing plate and laminate it to the second substrate, ensuring that there are no bubbles and the positions are aligned. Spray or apply moisture-proof agent on the surface of the conductive adhesive. S5: Curing the thermal conductive adhesive, UV curing the thermal conductive adhesive of the second substrate and the polarizer to enhance the bonding strength; S6: Coating sealant on the edges of the first base layer and the second base layer, reserving an injection port, injecting liquid crystal material between the two base layers, and sealing the injection port after forming a uniform liquid crystal layer.

[0014] Furthermore, the following working modes are included: Normal working mode: The first liquid crystal layer works alone to achieve wide-range brightness control. In this mode, a high voltage is applied to the first liquid crystal layer to control the arrangement of liquid crystal molecules to control a wide range of light transmission areas. Low-power operation mode: The second liquid crystal layer works; when the second liquid crystal layer works, a low voltage is applied, and the second transparent electrode corresponding to the second liquid crystal layer is a small-size electrode pixel-level TFT array or a low-voltage control electrode. The tilt angle of the liquid crystal molecules is finely adjusted through a micro-electric field, grayscale gradient or color control; When the first liquid crystal layer and the second liquid crystal layer operate simultaneously, the two cooperate in tilting; Working mode of the graphic display device: The graphic display device includes a projection mechanism and an optical element. The optical element is relatively arranged in an inner arc shape along the main display module. The projection mechanism and the optical element are respectively arranged outside the display area and are relatively parallel. The projection mechanism is a projection lamp. By projecting onto the inner arc optical element, the image is displayed in the main display module. This mode is activated when the screen is turned off or in standby mode, and projection technology is used to achieve low-power image display. As a screen saver content, the graphic display device and the main display module are linked through an electrical connection to ensure that the graphic display device can be seamlessly started for display when the screen status is switched.

[0015] The present invention has the following beneficial effects: the second liquid crystal layer is disposed between the conductive layer and the conductive adhesive, and the conductive adhesive and the conductive layer are separated from each other. The conductive layer and the conductive adhesive are covered with a moisture-proof agent. The conductive layer applies a voltage to the liquid crystal layer to change its crystal morphology. In this process, the conductive layer covers the conductive adhesive to ensure overall conductivity sensitivity. The three-dimensional contact between the conductive adhesive and the conductive layer enables the surface resistance to be controlled within 0.01-0.1Ω·cm. The conductive adhesive is further covered with the moisture-proof agent. The moisture-proof agent covering the surface of the conductive adhesive forms a double barrier with its own hydrophobic groups, and the water absorption rate can be reduced to <0.05wt%. The first base layer serves as a bottom plate, and a first transparent electrode and a second transparent electrode are provided on the bottom plate. When a voltage is applied to the first transparent electrode and / or the second transparent electrode, the liquid crystal of the liquid crystal layer is tilted or horizontal when an electric field is applied, allowing or blocking the pattern from passing through the liquid crystal layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1It is a structural schematic diagram of an embodiment of the present invention; Figure 2 Schematic diagram of the main display module structure according to an embodiment of the present invention; Figure 3 Schematic diagram of the exploded structure of the projection mechanism according to the embodiment of the present invention.

[0017] In the figure: 1. Main display module; 11. Substrate; 12. Liquid crystal layer; 121. First liquid crystal layer; 122. Second liquid crystal layer; 13. Conductive layer; 14. First base layer; 141. First transparent electrode; 142. Second transparent electrode; 15. Second base layer; 2. Polarizing plate; 3. Moisture-proof agent; 4. Graphic display device; 41. Projection mechanism; 42. Optical element; 5. Sealing member. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0020] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0021] See also Figure 1-3 As shown in FIG, a waterproof multi-layer display device of a liquid crystal display module of the present invention comprises: A main display module 1 includes a substrate 11, a liquid crystal layer 12, a conductive layer 13, a first base layer 14, and a second base layer 15. The liquid crystal layer 12 is disposed between the first base layer 14 and the second base layer 15. The substrate 11 is attached to the first base layer 14 and is covered with a flat layer of conductive adhesive. The liquid crystal layer 12 is injected between the first base layer 14 and the second base layer 15 by filling. A first liquid crystal layer 121 is filled between the conductive adhesive and the conductive layer 13. A polarizer 2 is disposed facing the second base layer 15 through the conductive adhesive. A second liquid crystal layer 122 is filled between the conductive layer 13 and the polarizer 2. The second liquid crystal layer 122 is disposed between the conductive layer and the conductive adhesive, and the conductive adhesive and the conductive layer are separated from each other. The conductive layer 13 and the conductive adhesive are covered with a moisture-proof agent 3. The first base layer 14 includes a first transparent electrode 141 and a second transparent electrode 142. Different voltages are provided between the first transparent electrode 141 and the second transparent electrode 142, respectively, to the first liquid crystal layer 121 and the second liquid crystal layer 122. When a voltage is applied to the first transparent electrode 141 or the second transparent electrode 142, the liquid crystal of the liquid crystal layer 12 is tilted or horizontal when an electric field is applied, thereby allowing or blocking the pattern from passing through the liquid crystal layer 12.

[0022] Among them, the first transparent electrode 141 and the second transparent electrode 142 are respectively etched on the first base layer 14, and by applying voltage to the filled liquid crystal layer 12 and the electrically conductive conductive layer 13, the pattern is allowed or blocked to pass through the liquid crystal layer 12. There are two liquid crystal layers, each equipped with an independent electrode. The first liquid crystal layer 121: applies a high voltage, such as 5V, to control a large range of light transmittance, such as a backlight partition switch; the second liquid crystal layer 122: applies a low voltage, such as 1-3V, to control the pixel-level grayscale, using an active matrix drive, such as LTPS or IGZO TFT; the first liquid crystal layer 121 corresponds to the first transparent electrode 141, and the first transparent electrode 141 is a backlight modulation layer or a high-voltage control electrode to achieve a large range of brightness control, while the second liquid crystal layer 122 corresponds to the second transparent electrode 142, which is a small-size electrode pixel-level TFT array or a low-voltage control electrode. The tilt angle of the liquid crystal molecules is adjusted by a micro-electric field to achieve grayscale gradient or color control.

[0023] The conductive layer 13 and the conductive adhesive are covered with a moisture-proof agent 3 , which is applied uniformly by spraying or coating.

[0024] The main display module 1 includes a liquid crystal layer 12 for displaying an image in a display area, and a peripheral area display device 4 surrounding the display area. The display device 4 is electrically connected to the main display module 1. The first base layer 14 serves as a bottom plate, and the bottom plate is provided with a first transparent electrode 141 and a second transparent electrode 142. When a voltage is applied to the first transparent electrode 141 or the second transparent electrode 142, the liquid crystal in the liquid crystal layer 12 is tilted or horizontal under the application of an electric field, allowing or blocking the pattern from passing through the liquid crystal layer 12.

[0025] The display area is used for displaying images, and a graphic display device is set in the peripheral area. For the display module on standby, the required image is projected onto the display screen through the graphic display device 4, such as time, logo or image, to realize the display of multiple layers of content, and it can be displayed simultaneously on the main display module 1.

[0026] The anti-moisture agent 3 is a fluororesin, an olefin resin, a urethane resin or an acrylic resin. Fluororesin is preferably used through compounding technology to maintain a high light transmittance and reduce the moisture permeability to below 3 g / (m²·24h). The applied voltage of the conductive layer 13 is reduced to reduce the risk of moisture corrosion.

[0027] The substrate 11 is white; The white substrate 11 improves the overall brightness of the LCD panel, and the reflectivity of the white substrate 11 can reach more than 95%. The pattern is transparent through the LCD, and the white material can scatter optical fibers to reduce local hot spots.

[0028] The image display device 4 includes a projection mechanism 41 and an optical element 42. The optical element 42 is relatively arranged as an inner arc along the main display module 1. The projection mechanism 41 and the optical element 42 are respectively arranged outside the display area and are relatively parallel.

[0029] The projection mechanism 41 is a projection lamp that projects images onto the inner arc optical element 42 to display images in the main display module 1, which serves as a screen standby and intermittently observes the required images, which is beneficial to reducing power consumption; Since the graphic display device 4 is linked to the main display module 1 through electrical connection, the graphic display device 4 is started when the screen is turned off or in standby mode. After the screen is turned off or in standby mode, the graphic display device 4 is turned on to display content as a screen saver. It is worth noting that the application scenarios of the graphic display device are highly flexible and are not limited to the display field. It can also be expanded to various devices with display functions, such as smart home appliances, car screens, etc., to provide them with diversified standby display solutions.

[0030] The projection mechanism 41 uses a 10W COB LED light source including a driver board.

[0031] The main display module 1 further includes a sealing member 5 for sealing the liquid crystal, and the adhesive is superimposed on the sealing member 5 .

[0032] The four sides of the main display module 1 are provided with sealing members 5 for further preventing the inflow and outflow of air. The sealing members 5 surround the main display module 1 to form an edge.

[0033] The second base layer 15 is thicker than the first base layer 14 .

[0034] The second base layer 15 is thicker than the first base layer 14 and is responsible for protecting the main display screen module 1 .

[0035] The liquid crystal layer 12 is sealed to the seal 5 between the first base layer 14 and the second base layer 15 by an adhesive. A projection mechanism 41 and an optical element 42 are arranged parallel to the length direction of the main display module 1. The optical element 42 has a first surface, which is arranged toward the plane of the substrate 11. The second surface of the optical element 42 is arranged obliquely toward the second base layer 15. The formula for the law of refraction is: , represents the angle of incidence, represents the refraction angle, is the relative refractive index of the second medium to the first medium.

[0036] The waterproof multi-layer display device and installation method of the liquid crystal display module include: S1: Etching a first transparent electrode 141 and a second transparent electrode 142 on the first base layer 14 respectively, so that the first transparent electrode 141 and the second transparent electrode 142 are electrically connected to the liquid crystal layer 12; S2: Clean the flat surface of the substrate 11, deposit or laminate the conductive layer 13 on the surface of the substrate 11, and apply or screen-print a conductive adhesive on the surface of the conductive layer 13, keeping the substrate 11 and the conductive adhesive separated; S3: evenly spray the nano moisture-proof agent 3 on the surface of the conductive layer 13 and the conductive adhesive to form a 5-10 μm protective film, forming a continuous covering film layer to prevent water vapor penetration; S4: Evenly apply conductive glue on the surface of the polarizing plate 2 and attach it to the second substrate 15, ensuring that there are no bubbles and the positions are aligned, and spray or apply moisture-proof agent 3 on the surface of the conductive glue; S5: Curing the thermal conductive adhesive, UV curing the thermal conductive adhesive of the second substrate 15 and the polarizing plate 2 to enhance the bonding strength; S6: Coat the edges of the first base layer 14 and the second base layer 15 with sealant, reserve an injection port, inject liquid crystal material between the two base layers, and seal the injection port after forming a uniform liquid crystal layer 12.

[0037] Without changing the optical properties of the components, the conductive layer 13 is arranged between the substrate 11 and the conductive adhesive, and the substrate 11 and the conductive adhesive are separated from each other. The conductive layer 13 and the conductive adhesive are covered with a moisture-proof agent 3. The conductive layer 13 applies a voltage to the liquid crystal layer 12 to change its crystal morphology. In this process, the conductive layer 13 covers the conductive adhesive to ensure the overall sensitivity of the conductivity. The three-dimensional contact between the conductive adhesive and the conductive layer 13 enables its surface resistance to be controlled within 0.01-0.1Ω·cm. The conductive adhesive is further covered with the moisture-proof agent 3. The moisture-proof agent 3 covering the surface of the conductive adhesive and its own hydrophobic groups form a double barrier, and the water absorption rate can be reduced to <0.05wt%.

[0038] The following working modes are included: Normal operating mode: The first liquid crystal layer 121 works alone to achieve wide-range brightness control. In this mode, a high voltage is applied to the first liquid crystal layer 121 to control the arrangement of liquid crystal molecules to control a wide range of light transmission areas. Low-power operation mode: The second liquid crystal layer 122 is in operation. When the second liquid crystal layer 122 is in operation, a low voltage is applied. The second transparent electrode 142 corresponding to the second liquid crystal layer 122 is a small-size electrode pixel-level TFT array or a low-voltage control electrode. The tilt angle of the liquid crystal molecules is finely adjusted through a micro-electric field, grayscale gradient or color control. When the first liquid crystal layer 121 and the second liquid crystal layer 122 operate simultaneously, the two cooperate in tilting; Working mode of the graphic display device: The graphic display device 4 includes a projection mechanism 41 and an optical element 42. The optical element 42 is relatively arranged in an inner arc shape along the main display module 1. The projection mechanism 41 and the optical element 42 are respectively arranged outside the display area and are relatively parallel. The projection mechanism 41 is a projection lamp. By projecting onto the inner arc optical element 42, the image is displayed in the main display module 1. This mode is activated when the screen is turned off or in standby mode, and projection technology is used to achieve low-power image display. As a screen saver content, the graphic display device 4 and the main display module 1 are electrically connected to achieve linkage, ensuring that the graphic display device 4 can be seamlessly started for display when the screen status is switched.

[0039] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0041] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A waterproof multi-layer display device of a liquid crystal display module, characterized in that: include: A main display module, which includes, from the inside out, a first base layer, a substrate, a liquid crystal layer group, a conductive layer, a polarizing plate, and a second base layer. The liquid crystal layer group includes a first liquid crystal layer and a second liquid crystal layer. The first liquid crystal layer is disposed between the substrate and the conductive layer, and the second liquid crystal layer is disposed between the conductive layer and the polarizing plate. The substrate is bonded to the first base layer and is covered with a layer of conductive adhesive. A polarizing plate is disposed facing the second base layer through a conductive adhesive, a second liquid crystal layer is filled between the conductive layer and the polarizing plate, the second liquid crystal layer is disposed between the conductive layer and the conductive adhesive, and the conductive adhesive and the conductive layer are separated from each other, and the conductive layer and the conductive adhesive are covered with a moisture-proof agent; The first base layer includes a first transparent electrode and a second transparent electrode, and different voltages are provided between the first transparent electrode and the second transparent electrode respectively. When a voltage is applied to the first transparent electrode or the second transparent electrode, the liquid crystal of the liquid crystal layer is tilted or horizontal when an electric field is applied, allowing or blocking the pattern from passing through the liquid crystal layer.

2. The waterproof multi-layer display device of liquid crystal display module according to claim 1, characterized in that: The main display module includes a display area of ​​a liquid crystal layer for displaying images, and a peripheral area image display device surrounding the display area. The image display device is electrically connected to the main display module.

3. The waterproof multi-layer display device of the liquid crystal display module according to claim 1, characterized in that: The moisture-proofing agent is fluororesin, olefin resin, urethane resin or acrylic resin.

4. The waterproof multi-layer display device of a liquid crystal display module according to claim 1, characterized in that: The substrate is white.

5. The waterproof multi-layer display device of liquid crystal display module according to claim 2, characterized in that: The image display device includes a projection mechanism and an optical element. The optical element is relatively arranged as an inner arc along the main display module. The projection mechanism and the optical element are respectively arranged outside the display area and are relatively parallel.

6. The waterproof multi-layer display device of a liquid crystal display module according to claim 1, characterized in that: The main display module further includes a sealing member for sealing the liquid crystal, and the adhesive is superimposed on the sealing member.

7. The waterproof multi-layer display device of a liquid crystal display module according to claim 1, characterized in that: The second base layer has a thickness greater than that of the first base layer.

8. The waterproof multi-layer display device of liquid crystal display module according to claim 5, characterized in that: The liquid crystal layer is sealed with a sealant between the first base layer and the second base layer by an adhesive, wherein a projection mechanism and an optical element are arranged parallel to the length direction of the main display module, the optical element having a first surface, the first surface being arranged toward the plane of the substrate, and the second surface of the optical element being arranged obliquely toward the second base layer; The formula for the law of refraction is: represents the angle of incidence, represents the refraction angle, is the relative refractive index of the second medium to the first medium.

9. A method for installing a liquid crystal display module, characterized in that: The waterproof multi-layer display device and installation method of the liquid crystal display module are characterized by comprising S1: etching a first transparent electrode and a second transparent electrode on the first base layer, respectively, so that the first transparent electrode and the second transparent electrode are electrically connected to the liquid crystal layer; S2: Clean the flat substrate surface to remove dust, deposit or laminate a conductive layer on the substrate surface, and apply or screen-print a conductive adhesive on the surface of the conductive layer, keeping the substrate and the conductive adhesive separated; S3: Spray nano moisture-proof agent evenly on the surface of the conductive layer and conductive adhesive to form a 5-10μm protective film, forming a continuous covering film layer to prevent water vapor penetration; S4: Evenly apply conductive adhesive on the surface of the polarizing plate and laminate it to the second substrate, ensuring that there are no bubbles and the positions are aligned. Spray or apply moisture-proof agent on the surface of the conductive adhesive. S5: Curing the thermal conductive adhesive, UV curing the thermal conductive adhesive of the second substrate and the polarizer to enhance the bonding strength; S6: Coating sealant on the edges of the first base layer and the second base layer, reserving an injection port, injecting liquid crystal material between the two base layers, and sealing the injection port after forming a uniform liquid crystal layer.

10. A method for using a liquid crystal display module, according to any one of claims 1 to 8, characterized in that: The following working modes are included: Normal working mode: The first liquid crystal layer works alone to achieve wide-range brightness control. In this mode, a high voltage is applied to the first liquid crystal layer to control the arrangement of liquid crystal molecules to control a wide range of light transmission areas. Low-power operation mode: The second liquid crystal layer works; when the second liquid crystal layer works, a low voltage is applied, and the second transparent electrode corresponding to the second liquid crystal layer is a small-size electrode pixel-level TFT array or a low-voltage control electrode. The tilt angle of the liquid crystal molecules is finely adjusted through a micro-electric field, grayscale gradient or color control; When the first liquid crystal layer and the second liquid crystal layer operate simultaneously, the two cooperate in tilting; Working mode of the graphic display device: The graphic display device includes a projection mechanism and an optical element. The optical element is relatively arranged in an inner arc shape along the main display module. The projection mechanism and the optical element are respectively arranged outside the display area and are relatively parallel. The projection mechanism is a projection lamp. By projecting onto the inner arc optical element, the image is displayed in the main display module. This mode is activated when the screen is turned off or in standby mode, and projection technology is used to achieve low-power image display. As a screen saver content, the graphic display device and the main display module are linked through an electrical connection to ensure that the graphic display device can be seamlessly started for display when the screen status is switched.

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