A flexible graphene screen and its preparation method

Abstract

The present invention relates to the field of flexible screens, and particularly relates to a flexible graphene screen and a preparation method thereof. The flexible graphene screen includes a housing and a graphene flexible screen. A main support plate is fixedly provided on the housing, and a secondary support plate is slidably connected horizontally. The secondary support plate is located behind the main support plate. The graphene flexible screen is divided into a main screen area and a secondary screen area. The rear side of the main screen area of the graphene flexible screen is fixed on the front side of the main support plate, and there is a screen gap between the rear side of the main support plate and the front side of the secondary support plate; a horizontal first adhesive part is provided on the rear side of the main support plate, and one end of the first adhesive part is located at the end of the main support plate, and a second adhesive part is provided on the front side of the secondary support plate; a third adhesive part is fixedly provided on the rear side of the secondary screen area of the graphene flexible screen; when the screen is in a folded state, the secondary screen area of the graphene flexible screen is located in the screen gap; when the screen is in an unfolded state, the secondary screen area and the main screen area are unfolded to form a large screen. This solution realizes the adjustment of the screen size.

Description

Technical Field

[0001] The present invention relates to the field of flexible screens, and particularly to a flexible graphene screen and a preparation method thereof. Background Art

[0002] Screens are quite common in daily life, including TV screens, computer screens, projection screens, etc. These screens all include a housing and a screen located on the housing, and the screen is attached to the housing. The housing is located at the rear of the screen, supporting and protecting the screen, and the front of the screen emits light and displays images.

[0003] With the progress of science and technology, current TV screens and projection screens are getting larger and larger, thus being able to give people a better visual experience. However, after the screen becomes larger, since the screen cannot be folded, the volume of the screen is relatively large during handling, installation, transportation, and storage, occupying a large amount of space and bringing inconvenience to the above-mentioned links. Summary of the Invention

[0004] The present invention aims to provide a flexible graphene screen and a preparation method thereof to achieve the adjustment of the screen size.

[0005] To achieve the above object, the present invention adopts the following technical solution: A flexible graphene screen includes a housing and a graphene flexible screen. A main support plate is fixedly provided on the housing, and a secondary support plate is horizontally slidably connected. The secondary support plate is located behind the main support plate. The graphene flexible screen is divided into a main screen area and a secondary screen area. The rear side of the main screen area of the graphene flexible screen is fixed on the front side of the main support plate, and there is a screen gap between the rear side of the main support plate and the front side of the secondary support plate; A horizontal first adhesive part is provided on the rear side of the main support plate, and one end of the first adhesive part is located at the end of the main support plate. A second adhesive part is provided on the front side of the secondary support plate; A third adhesive part is fixedly provided on the rear side of the secondary screen area of the graphene flexible screen;

[0006] When the screen is in a folded state, the secondary screen area of the graphene flexible screen crosses the end of the main support plate and is located in the screen gap, and the graphene flexible screen is bent in the screen gap; The graphene flexible screen is bent into two sections in the screen gap. One section is close to the main support plate, and the third adhesive part on the rear side of the graphene flexible screen close to the main support plate is bonded to the first adhesive part. The other section is close to the secondary support plate, and the rear side of the graphene flexible screen close to the secondary support plate is connected to the front side of the secondary support plate;

[0007] When the screen is in an unfolded state, the secondary support plate extends out from behind the main support plate, the graphene flexible screen is in a stretched state, and the third adhesive part on the secondary screen area of the graphene flexible screen is bonded to the second adhesive part.

[0008] The principle and advantages of this solution are as follows: The flexible screens in the prior art can be bent to a large extent, thus reducing the occupied volume. For example, a rollable flexible display device with the patent publication number CN110718150B, and another rollable flexible display device with the patent publication number CN107221254B. These flexible screens can be wound and wrapped by a winding device. It can be seen that the flexibility of the flexible screen is very powerful. However, after repeated winding and folding, and with a large number of winding deformations, the performance of the flexible screen will also be affected, affecting the service performance of the flexible screen. The flexible screen in this solution is a graphene flexible screen. Due to the addition of graphene components, graphene has excellent properties, such as high flexibility, high strength, etc., which improves the service life of the flexible screen, making it not easily damaged after repeated deformations and having good durability.

[0009] In this solution, the graphene flexible screen is a screen for displaying images. The graphene flexible screen has flexibility and can be bent and deformed. The main support plate and the secondary support plate are used to support the graphene flexible screen and are the carriers to which the graphene flexible screen adheres. The main screen area of the graphene flexible screen is fixed on the main support plate, and the secondary screen area is connected to the secondary support plate. There is no substantial difference between the main screen area and the secondary screen area. It is just for the convenience of description and is different names for different parts of the graphene flexible screen.

[0010] In this solution, the secondary support plate is slidably connected to the housing. Therefore, through the sliding of the secondary support plate, the folding and unfolding of the screen are realized. That is, when the secondary support plate is located behind the main support plate, the secondary screen area follows the secondary support plate and is also located behind the main support plate. At this time, the entire screen is in a folded state, and only the main screen area is exposed outside, and the screen is small; when the secondary support plate is slid out from behind the main support plate, the secondary screen area also slides out from behind the main support plate. At this time, the main screen area and the secondary screen area are connected to form a large screen, thus making the screen larger. Therefore, through this solution, the adjustment of the screen size is realized, enabling the screen to be folded small during handling, installation, transportation, storage, etc., so that the occupied space of the screen is smaller. In addition, when the screen is in use, the user can also adjust the size of the screen according to the actual situation. For example, when the screen is too large and occupies too much space, the screen can be made smaller; when the indoor space is large and the screen is small, the screen can be made larger, thus facilitating the user's use.

[0011] This solution realizes the folding of the screen in a sliding manner. When the secondary support plate extends from the rear of the main support plate, at this time, the third adhesive part adheres to the second adhesive part of the secondary support plate, so that the secondary screen area can be stably located on the secondary support plate. When the secondary support plate is pushed into the rear of the main support plate, as the secondary support plate moves, the graphene flexible screen abuts against the end of the main support plate, so that the third adhesive part separates from the second adhesive part, thus avoiding the blockage of the graphene flexible screen during the process of the secondary support plate retracting to the rear of the main support plate; after the third adhesive part separates from the second adhesive part, as the secondary support plate continues to move, the third adhesive part separated from the second adhesive part adheres to the first adhesive part on the rear side of the main support plate, so that the graphene flexible screen is regularly located in the screen gap. When the secondary support plate slides out from the rear of the main support plate, at this time, the secondary support plate pulls the graphene flexible screen. Under the pulling action of the secondary support plate, the third adhesive part gradually separates from the first adhesive part. As the secondary support plate slides out from the rear of the support plate, the third adhesive part on the graphene flexible screen automatically adheres to the second adhesive part of the secondary support plate. Therefore, through the design of the first adhesive part, the second adhesive part and the third adhesive part in this solution, during the movement of the secondary support plate, the secondary screen area of the graphene flexible screen can also move with the secondary support plate. There will be no situation where the secondary screen area of the graphene flexible screen does not enter the screen gap and still remains outside the end of the main support plate during the process of the secondary support plate retracting from the extended state to the rear of the main support plate, nor will there be a situation where the secondary screen area of the graphene flexible screen still remains in the screen gap and does not come out when the secondary support plate slides out from the rear of the main support plate. Therefore, the setting of the first adhesive part, the second adhesive part and the third adhesive part in this solution is the key point to achieve the effect that "when the secondary support plate is hidden behind the main support plate, the secondary screen area of the graphene flexible screen can automatically hide behind the main support plate following the secondary support plate, and when the secondary support plate slides out from behind the main support plate, the secondary screen area can automatically come out from behind the main support plate following the secondary support plate and adhere to the secondary support plate". Without the setting of the first adhesive part, the second adhesive part and the third adhesive part, only the secondary support plate can slide back and forth, and the secondary screen area of the graphene flexible screen will not automatically and regularly hide behind the main support plate or automatically come out from behind the main support plate.

[0012] Preferably, as an improvement, the number of secondary support plates is two. The two secondary support plates are both located behind the main support plate, and the two secondary support plates can extend from the rear of both ends of the main support plate respectively. Thus, by sliding out the two secondary support plates from both ends of the main support plate respectively, the screen is enlarged, and by pushing both secondary support plates back to the rear of the main support plate, the screen is reduced. In this solution, the two secondary support plates are symmetrically arranged. After the screen is enlarged, the two secondary screen areas are located on both sides of the main screen area and are symmetrical about the central axis of the main screen area. The whole graphene flexible screen has a regular shape and good visual effects.

[0013] In the prior art, although there are technologies that fold and unfold the screen by flipping or adjust the screen size by rolling up, when using these methods, after the screen is flipped (or rolled up) or unfolded, since the screen is flipped or curled to one side, at least one state is that the screen is not centered, thus affecting the visual effect. In this solution, the screen is folded and unfolded by sliding. The secondary screen areas on both sides of the main screen area can simultaneously extend from behind the main support plate or simultaneously hide behind the main support plate, and the position of the main screen area remains unchanged, that is, the main screen area can always be in the centered position, such as the middle position of a TV wall. In this way, whether the screen becomes larger or smaller, it will not affect the visual effect.

[0014] Preferably, as an improvement, a first rack and a second rack are respectively fixedly connected to the two secondary support plates. The first rack and the second rack face each other and are simultaneously engaged with a gear located between the first rack and the second rack.

[0015] Thus, by controlling one secondary support plate, the other secondary support plate can move together through the meshing of the first rack, the second rack and the gear, and their moving directions are opposite, thereby realizing the simultaneous movement of the two secondary support plates and the simultaneous control of the secondary screen areas on both sides of the main screen area.

[0016] Preferably, as an improvement, the secondary support plate includes a sliding plate and a fixed shell slidably connected to the housing. A plate groove is provided on the front side of the fixed shell, and the sliding plate is slidably connected in the plate groove; the front side of the sliding plate extends out of the plate groove, and the front side of the sliding plate is connected to the rear side of the secondary screen area of the graphene flexible screen.

[0017] Since the secondary support plate is located behind the main support plate, after the secondary support plate slides out from behind the main support plate, the secondary support plate and the main support plate are not in the same plane, so that the main screen area and the secondary screen area are not in the same plane, and there is a certain inclination at the connection between the main screen area and the secondary screen area. With the structure of this solution, after the secondary support plate slides out from behind the main support plate, the sliding plate is pushed to make the sliding plate move forward in the plate groove, so that the front side of the sliding plate can be flush with the front side of the main support plate, and the main screen area and the secondary screen area are in the same plane to improve the visual effect.

[0018] Preferably, as an improvement, a rod hole is provided at the rear side of the fixed shell, and a push rod is fixedly connected to the rear side of the sliding plate. The push rod passes through the rod hole. Thus, by pushing and pulling the push rod, the sliding plate can be controlled to slide in the plate groove of the fixed shell.

[0019] Preferably, as an improvement, a pin hole is provided on the push rod, a pin is inserted into the pin hole, and the pin abuts against the rear side of the fixed shell. Thus, by inserting the pin into the pin hole and the pin abutting against the rear side of the fixed shell, the fixing of the sliding plate is realized, and the sliding plate is relatively stable in the plate groove after retracting into the plate groove.

[0020] Preferably, as an improvement, the first sticking part and the third sticking part, and the second sticking part and the third sticking part both form a magic tape structure; or,

[0021] The first sticking part, the second sticking part and the third sticking part all have adhesiveness.

[0022] Thus, through the magic tape structure, the bonding between the first sticking part and the third sticking part, and the bonding between the second sticking part and the third sticking part are realized, and they can still be separated under the action of an external force after bonding. By the first sticking part, the second sticking part and the third sticking part all having adhesiveness, the bonding between the first sticking part and the third sticking part, and the bonding between the second sticking part and the third sticking part can also be realized, and they can also be separated under the action of an external force after bonding.

[0023] Preferably, as an improvement, the end of the main support plate is arc-shaped. The arc is relatively smooth, so that after the graphene flexible screen abuts against the end of the main support plate, an arc-shaped bend occurs, and the effect of the graphene flexible screen sticking to the end of the main support plate is better.

[0024] The present application also discloses another solution: a preparation method of a flexible graphene screen, including the following steps:

[0025] Step 1, processing the shell, the main support plate and the auxiliary support plate into shape; fixing a transverse first sticking part on the rear side of the main support plate, one end of the first sticking part is located at the end of the main support plate, and fixing a transverse second sticking part on the front side of the auxiliary support plate.

[0026] Step 2, assembly: assembling the main support plate and the auxiliary support plate on the shell. After assembly, the main support plate is fixedly connected to the shell, the auxiliary support plate is horizontally slidably connected to the shell, and the auxiliary support plate is located behind the main support plate;

[0027] Step 3, graphene flexible screen installation: dividing the graphene flexible screen into a main screen area and an auxiliary screen area, fixedly installing the main screen area on the front side of the main support plate; pulling out the auxiliary support plate from behind the main support plate, then fixing a third sticking part on the rear side of the auxiliary screen area of the graphene flexible screen, and sticking the third sticking part on the graphene flexible screen to the second sticking part on the auxiliary support plate;

[0028] Step 4, after the main screen area and the auxiliary screen area are respectively installed on the main support plate and the auxiliary support plate, pushing the auxiliary support plate into the rear of the main support plate and carrying out packaging.

[0029] In the preparation method adopting this solution, in step 3, after pulling out the secondary support plate from the rear of the main support plate, compared with when the secondary support plate is located at the rear of the main support plate, the space in front of the secondary support plate is relatively wide, which is convenient for sticking the third adhesive part of the graphene flexible screen on the second adhesive part of the secondary support plate. In step 4, after the secondary screen area of the graphene flexible screen is installed on the secondary support plate, when the secondary support plate is pushed into the rear of the main support plate, as the secondary support plate moves, the end of the graphene flexible screen abuts against the main support plate, so that the third adhesive part separates from the second adhesive part, thus avoiding the blockage of the movement of the secondary support plate by the graphene flexible screen; after the third adhesive part separates from the second adhesive part, as the secondary support plate continues to move, the third adhesive part separated from the second adhesive part sticks on the first adhesive part on the rear side of the main support plate, so that the graphene flexible screen is regularly located in the screen gap. Thus, through this preparation method, before the screen is packaged, it is convenient to set the secondary screen area of the graphene flexible screen in the screen gap between the main support plate and the secondary support plate, avoiding the situation that it is not easy to place the graphene flexible screen in the screen gap during the preparation process.

[0030] Preferably, as an improvement, the number of secondary support plates is two. In step 4, the secondary support plates are pushed until the opposite ends of the two secondary support plates abut against each other. Thus, when the two secondary support plates abut against each other, it shows that the two secondary support plates have retreated in place. Description of the Drawings

[0031] Figure 1 It is an external schematic diagram of a flexible graphene screen.

[0032] Figure 2 It is Figure 1 The right view partial cross-sectional view of

[0033] Figure 3 It is a schematic diagram of the main support plate and two secondary support plates inside the housing in the contracted and folded state.

[0034] Figure 4 It is a schematic diagram of the main support plate and two secondary support plates inside the housing in the unfolded state.

[0035] Figure 5 It is Figure 3 The partial enlarged view of the main support plate and the first secondary support plate in , mainly showing the first adhesive part, the second adhesive part and the third adhesive part.

[0036] Figure 6 It is the cross-sectional view of the first secondary support plate. Detailed Description of the Invention

[0037] The following is a further detailed description through specific embodiments:

[0038] The reference numerals in the accompanying drawings of the specification include: housing 1, rotating shaft 2, main support plate 3, graphene flexible screen 4, second auxiliary support plate 5, first auxiliary support plate 6, second rack 7, first rack 8, gear 9, second adhesive part 10, first adhesive part 11, third adhesive part 12, sliding plate 13, fixed housing 14, push rod 15, and bolt 16.

[0039] Embodiment 1

[0040] Basically as shown in the attached Figures 1-4 figures: A flexible graphene screen includes a housing 1 and a graphene flexible screen 4. As shown in the attached Figure 1 figures, the housing 1 is in the shape of a cuboid, the interior of the housing 1 is hollow, and there are openings at the left and right ends of the housing 1 and they are connected. As shown in the attached Figure 2 and Figure 3 figures, a main support plate 3 is integrally formed or fixed by screws on the front side of the housing 1. The left and right ends of the main support plate 3 are arc-shaped, so that the two ends of the main support plate 3 are relatively smooth.

[0041] As shown in the attached Figures 2-4 figures, an auxiliary support plate is horizontally slidably connected inside the housing 1. The specific sliding method is as follows: there are sliding grooves on the inner wall of the housing 1, and the edge parts of the auxiliary support plate are located in the sliding grooves. The number of auxiliary support plates in this embodiment is two, namely the first auxiliary support plate 6 and the second auxiliary support plate 5. Of course, in other embodiments, the number of auxiliary support plates can be one. The first auxiliary support plate 6 and the second auxiliary support plate 5 are both located behind the main support plate 3, and the first auxiliary support plate 6 and the second auxiliary support plate 5 are both parallel to the main support plate 3. In this embodiment, the first auxiliary support plate 6 and the second auxiliary support plate 5 are on the same plane. The lengths of the first auxiliary support plate 6 and the second auxiliary support plate 5 in this embodiment are both approximately equal to half of the length of the main support plate 3. In this way, as shown in the attached Figure 3 figures, when the first auxiliary support plate 6 and the second auxiliary support plate 5 are both located behind the main support plate 3, the left end of the first auxiliary support plate 6 abuts against the right end of the second auxiliary support plate 5, and the total length of the first auxiliary support plate 6 and the second auxiliary support plate 5 is approximately equal to the length of the main support plate 3. There are screen gaps between the rear side of the main support plate 3 and the front side of the first auxiliary support plate 6, and between the rear side of the main support plate 3 and the front side of the second auxiliary support plate 5. The size of the screen gap is specifically set according to the bending ability of the graphene flexible screen 4, and the spatial thickness of the screen gap can be 10 - 30 cm.

[0042] The graphene flexible screen 4 in this embodiment is flexible and can be bent. The graphene flexible screen 4 includes a base layer, an adhesive layer, a graphene conductive layer, and a protective layer. The graphene flexible screen 4 belongs to the prior art and will not be elaborated here. For example, the invention patent with the Chinese patent publication number CN109062451B discloses a novel flexible graphene touch screen and its preparation method.

[0043] The graphene flexible screen 4 is divided into a main screen area and a secondary screen area. The main screen area is located in the middle of the entire graphene flexible screen 4, and the secondary screen areas are located on both sides of the main screen area. The main screen area and the secondary screen areas are integrated. There is no substantial difference between the main screen area and the secondary screen areas, except that they have different names due to their different positions on the graphene flexible screen 4. The rear side of the main screen area of the graphene flexible screen 4 is fixed on the front side of the main support plate 3. Specifically, the fixing method is through adhesive bonding. Combining Figure 3 and Figure 4 As shown, there are two horizontal first adhesive parts 11 on the rear side of the main support plate 3. The lengths of the first adhesive parts 11 are both one-fourth of the length of the main support plate 3. The right end of the right first adhesive part 11 is located at the right end of the main support plate 3, and the left end of the left first adhesive part 11 is located at the left end of the main support plate 3. The front sides of the first secondary support plate 6 and the second secondary support plate 5 are both provided with second adhesive parts 10. The lengths of the second adhesive parts 10 are both half of the length of the secondary support plate. The left end of the right second adhesive part 10 is located at the left end of the first secondary support plate 6, and the right end of the left second adhesive part 10 is located at the right end of the second secondary support plate 5.

[0044] Combining Figure 3 As shown, when the screen is in the folded state, the two secondary screen areas of the graphene flexible screen 4 respectively cross over the ends of the main support plate 3 and are located in the screen gap. The graphene flexible screen 4 is bent in the screen gap. The two secondary screen areas on the graphene flexible screen 4 are both bent into two segments in the screen gap. One segment is close to the main support plate 3. A third adhesive part 12 is fixed on the rear side of the graphene flexible screen 4 close to the main support plate 3. The specific fixing method is adhesive bonding. The third adhesive part 12 and the first adhesive part 11 are adhesively bonded (the third adhesive part 12 and the first adhesive part 11 can also be separated). The other segment is close to the secondary support plate. Taking the first secondary support plate 6 as an example, the rear side of the graphene flexible screen 4 close to the first secondary support plate 6 and the part of the front side of the first secondary support plate 6 where there is no second adhesive part 10 (the right half part of the front side of the first secondary support plate 6) are adhesively bonded and fixed (this fixing makes the graphene flexible screen 4 and the first secondary support plate 6 firmly bonded and not easily separated). The connection method between the second secondary support plate 5 and the secondary screen area of the graphene flexible screen 4 is the same as the connection method between the first secondary support plate 6 and the secondary screen area of the graphene flexible screen 4.

[0045] Combining Figure 4 As shown, when the screen is in the unfolded state, the first secondary support plate 6 and the second secondary support plate 5 respectively extend out from behind the two ends of the main support plate 3. At this time, the graphene flexible screen 4 is in a stretched state. At this time, the third adhesive part 12 on the right secondary screen area is adhered to the second adhesive part 10 on the first secondary support plate 6, and the third adhesive part 12 on the left secondary screen area is adhered to the second adhesive part 10 on the second secondary support plate 5. After the third adhesive part 12 and the second adhesive part 10 are adhesively bonded, they can still be separated.

[0046] After the first adhesive part 11 and the third adhesive part 12 in this embodiment are bonded, they can be disassembled under the action of an external force. After the second adhesive part 10 and the third adhesive part 12 are bonded, they can also be disassembled under the action of an external force. The specific implementation method is as follows: The first adhesive part 11 and the third adhesive part 12, and the second adhesive part 10 and the third adhesive part 12 both form a Velcro structure. Among them, both the first adhesive part 11 and the second adhesive part 10 are the plush surfaces, and the third adhesive part 12 is the burr surface. Or, both the first adhesive part 11 and the second adhesive part 10 are the burr surfaces, and the third adhesive part 12 is the plush surface. Of course, in other embodiments, the first adhesive part 11, the second adhesive part 10, and the third adhesive part 12 can also be tapes with adhesiveness, because the two tapes can still be torn apart after being bonded to each other.

[0047] Combined with Figure 3 and Figure 4 As shown, a first rack 8 and a second rack 7 are respectively fixedly connected (fixed by screws) to the rear side surfaces of the first secondary support plate 6 and the second secondary support plate 5. The first rack 8 and the second rack 7 are opposite to each other and simultaneously mesh with a gear 9 located between the first rack 8 and the second rack 7. A rotating shaft 2 is coaxially fixed on the gear 9, and the rotating shaft 2 rotates on the housing 1.

[0048] The flexible graphene screen in this embodiment can be used as a TV screen, a computer screen, or a projection screen. Taking the TV screen as an example, when in use, the housing 1 is fixed to the TV wall by bolts, and the main support plate 3 is located in the middle of the TV wall. The TV image is displayed through the graphene flexible screen 4. The main support plate 3, the first secondary support plate 6, and the second secondary support plate 5 are used to support the graphene flexible screen 4 and are the carriers for the graphene flexible screen 4 to adhere to. Of course, chambers can be provided inside the main support plate 3, the first secondary support plate 6, and the second secondary support plate 5 to contain various electronic devices.

[0049] Combined with Figure 3 and Figure 5 As shown, at this time, both the first secondary support plate 6 and the second secondary support plate 5 are located behind the main support plate 3. At this time, the entire screen is in a folded state. The secondary screen area follows the corresponding secondary support plate and is located behind the main support plate 3. The secondary screen area is bent in the screen gap, and the first adhesive part 11 and the third adhesive part 12 are stuck together. At this time, the entire screen is in a folded state, and only the main screen area is exposed, and the screen is smaller. Thus, when there are many items around the TV wall, the screen can be reduced, and the screen hanging on the TV wall will not occupy a large space. When the user is using it, the TV picture can be scaled to the size of the main screen area.

[0050] When the screen needs to be unfolded, that is, when the screen changes from Figure 3 to Figure 4In this state, pull the first auxiliary support plate 6 or the second auxiliary support plate 5 outwards. Taking the first auxiliary support plate 6 as an example, the first auxiliary support plate 6 slides out to the right from the rear of the main support plate 3. During the pulling process, the first auxiliary support plate 6 drives the auxiliary screen area to move to the right. The auxiliary screen area located in the screen gap is pulled by the first auxiliary support plate 6, and the first adhesive part 11 and the third adhesive part 12 gradually separate. At the same time, as the first auxiliary support plate 6 moves to the right, the auxiliary screen area also moves to the right, and the third adhesive part 12 on the auxiliary screen area gradually adheres to the second adhesive part 10 on the first auxiliary support plate 6. Finally, as Figure 4 shown, the automatic unfolding of the auxiliary screen area located in the screen gap is realized. Of course, in order to make the third adhesive part 12 and the second adhesive part 10 adhere firmly, after the first auxiliary support plate 6 is completely pulled out, manually press the auxiliary screen area and the first auxiliary support plate 6 to make the third adhesive part 12 and the second adhesive part 10 on the auxiliary screen area adhere more firmly.

[0051] During the process of the first auxiliary support plate 6 moving to the right, the first auxiliary support plate 6 drives the gear 9 to rotate through the first rack 8, the gear 9 drives the second rack 7 to move, and the second rack 7 drives the second auxiliary support plate 5 to move to the left, so that the second auxiliary support plate 5 also extends out to the left from the rear of the main support plate 3 at the same time. The auxiliary screen area on the left side of the main support plate 3 is also located on the front side of the second auxiliary support plate 5 at the same time. Thus, at this time, the main screen area and the auxiliary screen area are connected as one to form a large screen, so that the screen becomes larger. During the process of the screen unfolding, the position of the main screen area does not move. Therefore, the entire screen is still in the center of the TV wall and will not affect the visual effect. Thus, through this solution, when there is a large space around the TV wall, the TV screen can be made larger. After the screen becomes larger, the user can adjust the TV picture to the full-screen state, that is, make the TV picture fill the main screen area and the auxiliary screen area.

[0052] When the screen needs to be folded and made smaller, that is, from Figure 4 to Figure 3In the [specific state], taking the first auxiliary support plate 6 as an example, when the first auxiliary support plate 6 is pushed leftward behind the main support plate 3, during the leftward movement of the first auxiliary support plate 6, the graphene flexible screen 4 abuts against the arc-shaped right end of the main support plate 3, so that the third adhesive part 12 on the right side of the graphene flexible screen 4 gradually separates from the second adhesive part 10 on the secondary screen area, thus avoiding the graphene flexible screen 4 from blocking the movement of the auxiliary support plate. Since the third adhesive part 12 and the second adhesive part 10 are gradually separated, and the separation starts from the left end to the right end of the second adhesive part 10 and does not completely separate, as the first auxiliary support plate 6 continues to move leftward, the first auxiliary support plate 6 will still drive the secondary screen area of the graphene flexible screen 4 to move leftward together into the screen gap. For the third adhesive part 12 that has separated from the second adhesive part 10, it will gradually adhere to the first adhesive part 11 on the rear side of the main support plate 3, and the adhesion direction is from the right end to the left end of the first adhesive part 11. Thus, when the first auxiliary support plate 6 is completely hidden behind the main support plate 3, the entire secondary screen area on the right side of the graphene flexible screen 4 is regularly located in the screen gap. The connection method between the second auxiliary support plate 5 and the secondary screen area is the same as that between the first auxiliary support plate 6 and the secondary screen area, and will not be elaborated here.

[0053] Thus, through this embodiment, the entire screen can be folded and unfolded, facilitating the user to use according to different needs. Of course, since the entire screen can be folded, it is also very convenient during handling, transportation, and storage.

[0054] In addition, this embodiment also discloses a preparation method of a flexible graphene screen, including the following steps:

[0055] Step 1, process the housing 1, the main support plate 3, the first auxiliary support plate 6, and the second auxiliary support plate 5 into shape; fix (by glue bonding) two horizontal first adhesive parts 11 on the rear side of the main support plate 3. The right end of the right first adhesive part 11 is located at the right end of the main support plate 3, and the left end of the left first adhesive part 11 is located at the left end of the main support plate 3. Fix (bond) horizontal second adhesive parts 10 on the front side of the first auxiliary support plate 6 and the front side of the second auxiliary support plate 5. The left end of the right second adhesive part 10 is located at the left end of the first auxiliary support plate 6, and the right end of the left second adhesive part 10 is located at the right end of the second auxiliary support plate 5.

[0056] Step 2, assembly: Assemble the main support plate 3, the first auxiliary support plate 6, and the second auxiliary support plate 5 on the housing 1. After assembly, the main support plate 3 is fixedly connected to the housing 1, and the first auxiliary support plate 6 and the second auxiliary support plate 5 are both horizontally slidably connected to the housing 1. The first auxiliary support plate 6 and the second auxiliary support plate 5 are both located behind the main support plate 3.

[0057] Step 3, Installation of the graphene flexible screen 4: Divide the graphene flexible screen 4 into a main screen area and a secondary screen area. Fix the main screen area to the front side of the main support plate 3 with glue. Pull out both the first secondary support plate 6 and the second secondary support plate 5 from the rear of the main support plate 3, and then fix (bond) a horizontal third bonding part 12 on the rear side of the secondary screen area of the graphene flexible screen 4. Bond the third bonding parts 12 on the two secondary screen areas of the graphene flexible screen 4 to the second bonding parts 10 on the first secondary support plate 6 and the second secondary support plate 5 respectively. After bonding, as shown in Figure 4 shown.

[0058] Step 4, After the main screen area and the secondary screen area are respectively installed on the main support plate 3 and the secondary support plates, push the first secondary support plate 6 and the second secondary support plate 5 to the rear of the main support plate 3 until the opposite ends of the first secondary support plate 6 and the second secondary support plate 5 abut against each other. After pushing, the first secondary support plate 6, the second secondary support plate 5, and the graphene flexible screen 4 change from Figure 4 to Figure 3 state. During the pushing process, the third bonding part 12 and the second bonding part 10 on the secondary screen area of the graphene flexible screen 4 separate and bond to the first bonding part 11. The specific process will not be elaborated here. After the screen is folded, it is packaged.

[0059] Embodiment 2

[0060] Combined with Figure 6 shown, in this embodiment, both the first secondary support plate 6 and the second secondary support plate 5 include a sliding plate 13 and a fixed shell 14 slidably connected to the housing 1. Taking the first secondary support plate 6 as an example, a plate groove is provided on the front side of the fixed shell 14, and the sliding plate 13 is located in the plate groove and can slide horizontally in the plate groove. The front side of the sliding plate 13 extends out of the plate groove, and the front side of the sliding plate 13 is connected to the rear side of the secondary screen area of the graphene flexible screen 4. As shown in Figure 6 shown, the right part of the secondary screen area of the graphene flexible screen 4 and the right half part of the front side of the sliding plate 13 are fixedly bonded with glue, and the left part of the secondary screen area is bonded through the third bonding part 12 and the second bonding part 10. A rod hole is provided at the rear side of the fixed shell 14, and a push rod 15 is fixedly connected to the rear side of the sliding plate 13 by screws. The push rod 15 passes through the rod hole. A pin hole is provided on the push rod 15, and a pin 16 is inserted into the pin hole. The pin 16 abuts against the rear side of the fixed shell 14. By the pin 16 abutting against the rear side of the fixed shell 14, the fixing of the sliding plate 13 is realized, and the sliding plate 13 is located in the plate groove and will not move forward and extend. The thickness of the first secondary support plate 6 and the second secondary support plate 5 is small, and at this time, both the first secondary support plate 6 and the second secondary support plate 5 can be located behind the main support plate 3.

[0061] After sliding the first secondary support plate 6 and the second secondary support plate 5 out from behind the main support plate 3, remove the bolt 16, push the push rod 15. The push rod 15 pushes the sliding plate 13, causing the sliding plate 13 to move forward in the plate groove, so that the front side of the sliding plate 13 and the front side of the main support plate 3 can be flush, making the main screen area and the secondary screen area a flat surface, avoiding Figure 4 the problem of poor visual effect caused by the secondary screen area and the main screen area not being in the same plane in Figure 4 .

[0062] The above are only embodiments of the present invention. Specific technical solutions and / or common knowledge such as characteristics well known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A flexible graphene screen, characterized in that: It includes a housing and a graphene flexible screen. A main support plate is fixedly provided on the housing, and a secondary support plate is horizontally slidably connected. The secondary support plate is located behind the main support plate. The graphene flexible screen is divided into a main screen area and a secondary screen area. The rear side of the main screen area of the graphene flexible screen is fixed on the front side of the main support plate. There is a screen gap between the rear side of the main support plate and the front side of the secondary support plate. A horizontal first adhesive part is provided on the rear side of the main support plate, and one end of the first adhesive part is located at the end of the main support plate. A second adhesive part is provided on the front side of the secondary support plate. A third adhesive part is fixedly provided on the rear side of the secondary screen area of the graphene flexible screen. When the screen is in the folded state, the secondary screen area of the graphene flexible screen straddles the end of the main support plate and is located in the screen gap. The graphene flexible screen is bent in the screen gap. The graphene flexible screen is bent into two sections in the screen gap. One section is close to the main support plate, and the third adhesive part on the rear side of the graphene flexible screen close to the main support plate is bonded to the first adhesive part. The other section is close to the secondary support plate, and the rear side of the graphene flexible screen close to the secondary support plate is connected to the front side of the secondary support plate. When the screen is in the unfolded state, the secondary support plate extends out from behind the main support plate. The graphene flexible screen is in a stretched state, and the third adhesive part on the secondary screen area of the graphene flexible screen is bonded to the second adhesive part. When the secondary support plate is pushed into the rear of the main support plate, as the secondary support plate moves, the graphene flexible screen abuts against the end of the main support plate, so that the third adhesive part separates from the second adhesive part. After the third adhesive part separates from the second adhesive part, as the secondary support plate continues to move, the third adhesive part separated from the second adhesive part adheres to the first adhesive part on the rear side of the main support plate. When the secondary support plate is slid out from the rear of the main support plate, under the pulling action of the secondary support plate, the third adhesive part gradually separates from the first adhesive part. As the secondary support plate slides out from the rear of the support plate, the third adhesive part on the graphene flexible screen automatically adheres to the second adhesive part of the secondary support plate.

2. A flexible graphene screen according to claim 1, characterized in that: The number of the secondary support plates is two. The two secondary support plates are both located behind the main support plate, and the two secondary support plates can respectively extend out from the rear of both ends of the main support plate.

3. A flexible graphene screen according to claim 2, characterized in that: A first rack and a second rack are respectively fixedly connected to the two secondary support plates. The first rack and the second rack face each other and are simultaneously engaged with a gear located between the first rack and the second rack.

4. A flexible graphene screen according to any one of claims 1-3, characterized in that: The secondary support plate includes a sliding plate and a fixed shell slidably connected to the housing. A plate groove is provided on the front side of the fixed shell, and the sliding plate is slidably connected in the plate groove. The front side of the sliding plate extends out of the plate groove, and the front side of the sliding plate is connected to the rear side of the secondary screen area of the graphene flexible screen.

5. A flexible graphene screen according to claim 4, characterized in that: A rod hole is provided at the rear side of the fixed shell, and a push rod is fixedly connected to the rear side of the sliding plate. The push rod passes through the rod hole.

6. The flexible graphene screen according to claim 5, wherein: A pin hole is provided on the push rod, and a pin is inserted into the pin hole. The pin abuts against the rear side of the fixed shell.

7. A flexible graphene screen according to claim 1, characterized in that: The first adhesive part and the third adhesive part, and the second adhesive part and the third adhesive part both form a magic tape structure; or, The first adhesive part, the second adhesive part and the third adhesive part all have adhesiveness.

8. A flexible graphene screen according to claim 1, characterized in that: The end of the main support plate is arc-shaped.

9. A method for preparing the flexible graphene screen according to claim 1, characterized in that: It includes the following steps: Step 1: Process the housing, the main support plate, and the auxiliary support plate into their final forms. Fix a horizontal first adhesive part on the rear side of the main support plate, with one end of the first adhesive part located at the end of the main support plate. Fix a horizontal second adhesive part on the front side of the auxiliary support plate. Step 2: Assembly: Assemble the main support plate and the auxiliary support plate on the housing. After assembly, the main support plate is fixedly connected to the housing, and the auxiliary support plate is slidably connected to the housing horizontally. The auxiliary support plate is located behind the main support plate. Step 3: Installation of the graphene flexible screen: Divide the graphene flexible screen into a main screen area and an auxiliary screen area. Fix the main screen area on the front side of the main support plate. Pull out the auxiliary support plate from behind the main support plate, then fix a third adhesive part on the rear side of the auxiliary screen area of the graphene flexible screen, and stick the third adhesive part on the graphene flexible screen to the second adhesive part on the auxiliary support plate. Step 4: After the main screen area and the auxiliary screen area are respectively installed on the main support plate and the auxiliary support plate, push the auxiliary support plate to the rear of the main support plate and perform packaging.

10. A method for preparing a flexible graphene screen according to claim 9, characterized in that: The number of auxiliary support plates is two. In Step 4, push the auxiliary support plates until the opposite ends of the two auxiliary support plates abut against each other.

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