Large curvature display screen and its production process

Abstract

The present invention provides a large-curvature display screen and its production process, comprising: S1: attaching the backplane to the Mylar; S4: assembling the light guide plate: placing a reflective sheet on the backplane and placing the light guide plate according to the position limits of the silicone pad; S5: assembling the diaphragm: aligning the backplane with the diaphragm, placing the diaphragm hooks into the backplane hooks, attaching the Mylar hooks, and pressing the center of the diaphragm with a pressing block to fit it to the backplane; S7: snapping the middle frame: first snapping in the upper left corner, pressing the top side hooks into the upper right corner, simultaneously pressing the left and right side hooks into the left and right sides, and pressing the bottom side hooks to completely snap the middle frame into the backlight assembly; S9: placing the entire glass sheet onto the backplane, pressing the glass, inserting a pressing block to secure the glass, sequentially tearing off the adhesive isolation films on the top side, bottom side, and left and right sides of the middle frame, and simultaneously pressing corresponding positions to bond the glass at corresponding positions to the middle frame. The present invention supports the assembly line production of displays with greater curvature, greatly improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and in particular to a large-curvature display screen and a production process thereof. Background Art

[0002] Curved displays and monitors with curved screens. These monitors use a vertical line running 90 degrees down the center of the screen as the axis, with the left and right sides converging toward the center, creating a curved screen effect. Compared to traditional flat-panel displays, curved monitors better align with the physiological curvature of the human eye, significantly enhancing the viewer's sense of envelopment and immersion. Therefore, curved monitors offer a superior visual experience compared to flat-panel displays.

[0003] The greater the curvature, the greater the arc of the bend, and the higher the production process requirements. For example, the production process of the curved R1000 display has its own special process compared to the production of general curved models. The existing curved display technology has the following difficulties that are difficult to overcome:

[0004] 1. It is difficult to achieve a larger curvature, and can only achieve a display with a smaller curvature like the R1500;

[0005] 2. The larger the curvature of the display, the more likely it is to have problems such as film arching and blackening;

[0006] 3. Large curvature places high demands on the curvature of the back panel and decorative strips.

[0007] Therefore, there is a need to provide a process for producing large-size display screens with larger curvatures. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide a large-curvature display screen and its production process, which not only supports the assembly line production of larger-curvature display screens, greatly improving production efficiency; but also can effectively solve the problem that large-curvature display screens are prone to film arching and blackening, thereby improving the yield rate.

[0009] In order to solve the above technical problems, the first technical solution adopted by the present invention is:

[0010] A production process for a large-curvature display screen includes the following steps:

[0011] S1: Back panel with Mylar;

[0012] S2: Attach the left and right light strips to the back panel and insert the left light strip cable;

[0013] S3: Attach the silicone pad to the back panel and plug in the right light bar cable;

[0014] S4: Light guide plate assembly: first place the reflective sheet on the back panel, then place the light guide plate according to the limit of the silicone pad on the back panel;

[0015] S5: Diaphragm assembly: Align the back plate with the diaphragm, place the diaphragm's hanging ears into the back plate's hanging ears, attach the hanging ear Mylar at the corresponding position, and press the middle position of the diaphragm with a pressing block to make it fit the back plate;

[0016] S6: a backlight inspection to obtain the backlight components;

[0017] S7: Snap the middle frame into place: First snap the upper left corner of the middle frame into place, then press the top side snaps to snap into place the upper right corner of the middle frame, then simultaneously press the left and right side snaps to snap into place the left and right sides, and finally press the bottom side snaps to snap the middle frame into place completely.

[0018] S8: Secondary backlight inspection;

[0019] S9: Cover glass: Without tearing off the adhesive isolation film on the middle frame, first place the entire piece of glass on the back panel of the backlight assembly, then press the glass to the back panel, and then put in a pressing block to fix the glass. Tear off the adhesive isolation film on the top side, bottom side, left and right sides of the middle frame in sequence, and press the corresponding positions simultaneously to make the glass at the corresponding position adhere to the middle frame, and obtain the machine.

[0020] Optionally, it also includes:

[0021] S10: Attaching graphite sheet: attaching graphite sheet on the glass COF IC;

[0022] S11: Glass pressing: Press the middle frame and glass together using a pressing machine;

[0023] S12: Turn over the machine: turn the machine to the back side through the convex pad turnover pad;

[0024] S13: PCB fixing;

[0025] S14: Lock decorative strip.

[0026] Optionally, it also includes:

[0027] S15: Enter the screen barcode and glass barcode of the machine into the MES system;

[0028] S16: Attach thermal conductive silicone to the IC position of the PCB board and install the machine's protective cover;

[0029] S17: Lock protection cover.

[0030] Optionally, the step S6: performing a backlight inspection to obtain a backlight assembly includes:

[0031] S6: Primary backlight inspection: Insert the left and right light strips into the light board respectively, light up the backlight, and check whether there are any foreign objects or white spots on the backlight. After the inspection passes, obtain the backlight assembly.

[0032] Optionally, the step S8: secondary backlight inspection includes:

[0033] S8: Turn on the backlight and check whether there is any plastic frame debris between the middle frame and the back panel, and whether there is any foreign matter in the diaphragm.

[0034] Optionally, the S13: PCB fixing includes:

[0035] The S13: PCB fixing: flipping the left and right PCB boards with EVA at the same time and attaching them to the corresponding positions on the left and right sides of the back panel.

[0036] Optionally, in S16, the protective cover includes a left iron cover and a right iron cover.

[0037] Another technical solution adopted in the present invention is:

[0038] A large-curvature display screen is manufactured by the above-mentioned production process for a large-curvature display screen.

[0039] Optionally, the curvature of the large-curvature display screen is R1000.

[0040] Optionally, the large-curvature display screen has a size of 31.5 inches.

[0041] The beneficial effects of the present invention are as follows: the production process of large-curvature display screens provided by the present invention can overcome the problems of film arching and blackening that are prone to occur during the production process of large-curvature display screens, improve the yield rate, and realize the production of large-curvature large-screen display screens on an assembly line from processing to assembly, thereby greatly promoting production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a process for producing a large-curvature display screen according to an embodiment of the present invention;

[0043] Figure 2 A schematic diagram of a complete process of producing a large-curvature display screen provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] To illustrate the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and accompanying drawings.

[0045] Please refer to Figure 1 as well as Figure 2 The present invention provides a production process for a large curvature display screen, comprising the following steps:

[0046] S1: Back panel with Mylar;

[0047] S2: Attach the left and right light strips to the back panel and insert the left light strip cable;

[0048] S3: Attach the silicone pad to the back panel and plug in the right light bar cable;

[0049] S4: Light guide plate assembly: first place the reflective sheet on the back panel, then place the light guide plate according to the limit of the silicone pad on the back panel;

[0050] S5: Diaphragm assembly: Align the back plate with the diaphragm, place the diaphragm's hanging ears into the back plate's hanging ears, attach the hanging ear Mylar at the corresponding position, and press the middle position of the diaphragm with a pressing block to make it fit the back plate;

[0051] S6: a backlight inspection to obtain the backlight components;

[0052] S7: Snap the middle frame into place: First snap the upper left corner of the middle frame into place, then press the top side snaps to snap into place the upper right corner of the middle frame, then simultaneously press the left and right side snaps to snap into place the left and right sides, and finally press the bottom side snaps to snap the middle frame into place completely.

[0053] S8: Secondary backlight inspection;

[0054] S9: Cover glass: Without tearing off the adhesive isolation film on the middle frame, first place the entire piece of glass on the back panel of the backlight assembly, then press the glass to the back panel, and then put in a pressing block to fix the glass. Tear off the adhesive isolation film on the top side, bottom side, left and right sides of the middle frame in sequence, and press the corresponding positions simultaneously to make the glass at the corresponding position adhere to the middle frame, and obtain the machine.

[0055] From the above description, it can be seen that the beneficial effects of the present invention are:

[0056] (1) Through the design of the back panel curvature, the specific operation method of placing the light guide plate according to the curvature of the back panel in the S4 light guide plate assembly step, and the specific operation method of placing the glass according to the curvature of the backlight in the S9 cover glass step, the three are coordinated to achieve the production of a large curvature (greater than R1500) display screen.

[0057] (2) By adding two Mylar fixing ear positions in the diaphragm assembly step of S5, the problem that the ear positions of the existing diaphragm are shallow and the diaphragm is easy to jump off is solved; by following the specific operation method of the backplane structure in the S7 card-in-frame step, the problem of easy membrane arching and blackening is solved.

[0058] Furthermore, it also includes:

[0059] S10: Attaching graphite sheet: attaching graphite sheet on the glass COF IC;

[0060] S11: Glass pressing: Press the middle frame and glass together using a pressing machine;

[0061] S12: Turn over the machine: turn the machine to the back side through the convex pad turnover pad;

[0062] S13: PCB fixing;

[0063] S14: Lock decorative strip.

[0064] Furthermore, it also includes:

[0065] S15: Enter the screen barcode and glass barcode of the machine into the MES system;

[0066] S16: Attach thermal conductive silicone to the IC position of the PCB board and install the machine's protective cover;

[0067] S17: Lock protection cover.

[0068] From the above description, it can be seen that a complete production process for a large-curvature display screen is provided to minimize possible problems that may exist in the production process of a large-curvature display screen.

[0069] Furthermore, the step S6: performing a backlight inspection to obtain a backlight assembly includes:

[0070] S6: Primary backlight inspection: Insert the left and right light strips into the light board respectively, light up the backlight, and check whether there are any foreign objects or white spots on the backlight. After the inspection passes, obtain the backlight assembly.

[0071] From the above description, it can be seen that the presence of foreign matter and white masses can be effectively eliminated through the first backlight inspection.

[0072] Furthermore, the S8: secondary backlight inspection includes:

[0073] S8: Turn on the backlight and check whether there is any plastic frame debris between the middle frame and the back panel, and whether there is any foreign matter in the diaphragm.

[0074] From the above description, we can see that the second backlight inspection can effectively eliminate the plastic frame debris and foreign matter generated by the friction between the middle frame and the back panel after the middle frame is stuck.

[0075] Furthermore, the S13: PCB fixing includes:

[0076] The S13: PCB fixing: flipping the left and right PCB boards with EVA at the same time and attaching them to the corresponding positions on the left and right sides of the back panel.

[0077] As can be seen from the above description, by providing a specific PCB fixing method suitable for display screens with curved sides, the stability of the PCB installation can be ensured.

[0078] Furthermore, in S16, the protective cover includes a left iron cover and a right iron cover.

[0079] As can be seen from the above description, by corresponding to the curvatures on both sides of the display screen, the protective cover is split into a left iron cover and a right iron cover, which can better protect and fix the curvatures on both sides.

[0080] Another technical solution provided by the present invention is:

[0081] A large-curvature display screen is manufactured by the above-mentioned production process for large-curvature display screens.

[0082] Furthermore, the curvature of the large-curvature display screen is R1000.

[0083] Furthermore, the size of the large-curvature display screen is 31.5 inches.

[0084] As can be seen from the above, the present invention also provides a large-size and larger-curvature display screen manufactured according to the production process of the large-curvature display screen, which better meets the needs of users and the market.

[0085] Example 1

[0086] Please refer to Figure 1 This embodiment provides a production process for a large curvature display screen, which includes at least the following steps:

[0087] S1: Back panel with Mylar;

[0088] Here, after taking the back panel, the curvature of the back panel is checked, and then the Mylar is attached to the back panel to prevent light leakage.

[0089] S2: Attach the left and right light strips to the back panel and insert the left light strip cable;

[0090] Here, in order to conform to the characteristics of the large curvature of the back panel, the operation method of attaching the left and right two-section light strips separately can effectively reduce the light shadow phenomenon compared to the traditional single-section straight light strip operation method; in addition, this workstation also takes into account the completion of the left light strip line operation, which can reduce the working hours of backlight inspection to a certain extent.

[0091] S3: Attach the silicone pad to the back panel and plug in the right light bar cable;

[0092] Here, a silicone pad is attached to the back panel to act as a limit light guide plate. In addition, this station also takes care of the right light strip line, which can reduce the working hours of backlight inspection to a certain extent.

[0093] S4: Light guide plate assembly:

[0094] First place the reflective sheet on the back panel, then place the light guide plate according to the limit of the silicone pad on the back panel;

[0095] Due to the large curvature of the backplane, the bottom side of the light guide plate is prone to rubbing against the light strips, potentially damaging the light guide plate. Therefore, this step prioritizes placing the top of the light guide plate onto the backplane, and then pressing the center position to fit the light guide plate along the backplane's curvature, a specific operation method to create a display with a larger curvature.

[0096] S5: Diaphragm assembly:

[0097] Place the back panel according to the diaphragm structure, place the diaphragm's ear into the back panel's ear, and attach the ear-hanging Mylar at the corresponding position; since the diaphragm is horizontal and the back panel is curved, after placing the diaphragm, you also need to press the middle position of the diaphragm with a pressing block to make it fit the back panel.

[0098] Compared to the traditional manufacturing process, this step adds a pressing jig to secure the diaphragm, and after the diaphragm ear is positioned, attaching ear-hanging Mylar to the ear. The latter specifically addresses the existing problem of the diaphragm falling easily due to its shallow position. The combination of these two steps ensures a tight fit between the diaphragm and the backplane, effectively preventing issues such as diaphragm arching and light shadows.

[0099] S6: a backlight inspection to obtain the backlight components;

[0100] The first backlight inspection involves inserting the light strip into the light panel, turning on the backlight, and checking for foreign objects, white patches, etc. Compared to traditional processes, due to the curvature of the back panel, it is necessary to press the diaphragm at the same position above and below the backlight to better detect foreign objects and white patches.

[0101] S7: Card frame:

[0102] In this station, the main task is to insert the middle frame into the assembled backlight assembly. The specific steps are as follows:

[0103] First, snap the upper left corner of the middle frame into place, then press the top side snaps of the middle frame to snap into its upper right corner, then press the left and right side snaps of the middle frame at the same time to snap into place on the left and right sides, and finally press the bottom side snaps of the middle frame to completely snap the middle frame into the backlight assembly.

[0104] The traditional snap-in frame process involves first snapping in the upper left and right corners. This can easily cause film arching in curved backlight components. The specific snap-in frame process steps provided in this embodiment adapt to the backplane structure and effectively avoid film arching and blackening caused by poor working practices.

[0105] S8: Secondary backlight inspection;

[0106] The second backlight inspection is mainly to prevent the middle frame from rubbing against the back panel after the middle frame is stuck, which may cause plastic frame debris, and to detect foreign objects hidden in the diaphragm.

[0107] S9: Cover glass:

[0108] Without removing the adhesive separator film from the middle frame, first place the entire glass sheet onto the backlight assembly's backplane. Gently press the glass against the backplane, then insert a pressure block to secure the glass's curvature. Next, remove the adhesive separator film on the top side of the middle frame and press the glass in place. Next, remove the adhesive separator film on the bottom side and press the glass in place. Finally, remove the adhesive separator film from the middle frame simultaneously and press the glass in place. This completes the entire cover glass process, ensuring the glass's curvature fits tightly against the backlight assembly, keeping the step within the ideal range.

[0109] Compared with the traditional cover glass step which is a simple horizontal cover glass, the specific cover glass step provided in this embodiment is more difficult and can be well applied to the production of large curvature display screens.

[0110] The production process of large-curvature display screens provided in this embodiment can overcome the problems of film arching and blackening that are prone to occur during the production process of large-curvature display screens, improve the yield rate, and realize the production of large-curvature large-screen display screens on an assembly line from processing to assembly, greatly promoting production efficiency.

[0111] Example 2

[0112] Please refer to Figure 2 This embodiment further expands upon the first embodiment to provide a complete production process for a large-curvature display screen.

[0113] The production process of the large curvature display screen of this embodiment further includes:

[0114] S10: Graphite sheet:

[0115] Here, by attaching a graphite sheet on the glass COF IC, it plays a role in preventing the COF from contacting the backplane and causing image abnormalities.

[0116] S11: Glass Lamination:

[0117] The pressing machine automatically presses down to make the middle frame and glass fit more tightly, thus preventing the risk of glass falling off.

[0118] S12: Flip

[0119] Here, a convex turnover pad is placed and the machine is then turned over to the back.

[0120] S13: PCB fixing;

[0121] Stick EVA on the PCB board, face the preset PCB marking line on the back panel, flip the left and right PCB boards at the same time and stick them to the corresponding positions on the back panel for fixation, then stick conductive cloth on the gold finger position.

[0122] S14: Lock decorative strip;

[0123] First check whether the curvature of the decorative strip meets the requirements, then align the screw holes of the decorative strip with the screw holes on the ground side of the back panel, and lock them in place with an electric screwdriver.

[0124] S15: MES input;

[0125] Enter the machine's screen barcode and glass barcode into the MES system and bind them to facilitate traceability when needed.

[0126] S16: Install protective cover;

[0127] First, attach thermal conductive silicone to the IC position of the PCB board to dissipate heat, and then install the machine's protective cover.

[0128] Preferably, the protective cover includes a left iron cover and a right iron cover, so as to be better suitable for machines with large curvature and provide better protection.

[0129] At the same time, compared with traditional processes, by attaching thermal conductive silicone to the IC position of the PCB board, it can prevent the machine from overheating.

[0130] S17: Lock protection cover;

[0131] After confirming that the protective cover is installed in place, use an electric screwdriver to lock the iron cover and secure it.

[0132] S18: Turn over the machine;

[0133] After locking the protective cover, the machine is in a back-facing state. By turning the machine to the front, it is convenient for the inspection personnel to inspect and test the image.

[0134] The large-curvature display provided in this embodiment can not only produce a display with a larger curvature (such as R1000), but also effectively avoid the problems of film arching and blackening in large-curvature display screens, thereby significantly improving the yield rate of large-curvature display screens; it can also realize the production of large-curvature display screens on an assembly line from processing to assembly, greatly improving production efficiency.

[0135] Example 3

[0136] This embodiment, based on the first or second embodiment, provides a large curvature display screen. The large curvature display screen is manufactured using the aforementioned large curvature display screen production process. The specific steps of the large curvature display screen production process are not repeated here. For details, please refer to the description of the first or second embodiment.

[0137] In some specific embodiments, the curvature of the large-curvature display screen can reach R1000, or even a model with a larger curvature.

[0138] In some specific embodiments, the size of the large-curvature display screen can reach 31.5 inches.

[0139] In summary, the large-curvature display screen and its production process provided by the present invention not only support the assembly line production of larger-curvature display screens, greatly improving production efficiency; but also effectively solve the problem of large-curvature display screens being prone to film arching and blackening, thereby improving the yield rate.

[0140] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A production process for a large curvature display screen, characterized in that: The following steps are involved: S1: Back panel with Mylar; S2: Attach the left and right light strips to the back panel and insert the left light strip cable; S3: Attach the silicone pad to the back panel and plug in the right light bar cable; S4: Light guide plate assembly: first place the reflective sheet on the back panel, then place the light guide plate according to the limit of the silicone pad on the back panel; S5: Diaphragm assembly: Align the back plate with the diaphragm, place the diaphragm's hanging ears into the back plate's hanging ears, attach the hanging ear Mylar at the corresponding position, and press the middle position of the diaphragm with a pressing block to make it fit the back plate; S6: a backlight inspection to obtain the backlight components; S7: Snap the middle frame into place: First snap the upper left corner of the middle frame into place, then press the top side snaps to snap into place the upper right corner of the middle frame, then simultaneously press the left and right side snaps to snap into place the left and right sides, and finally press the bottom side snaps to snap the middle frame into place completely. S8: Secondary backlight inspection; S9: Cover glass: Without tearing off the adhesive isolation film on the middle frame, first place the entire piece of glass on the back panel of the backlight assembly, then press the glass to the back panel, and then put in a pressing block to fix the glass. Tear off the adhesive isolation film on the top side, bottom side, left and right sides of the middle frame in sequence, and press the corresponding positions simultaneously to make the glass at the corresponding position adhere to the middle frame, and obtain the machine.

2. The production process of a large curvature display screen according to claim 1, characterized in that: Also includes: S10: Attaching graphite sheet: attaching graphite sheet on the glass COF IC; S11: Glass pressing: Press the middle frame and glass together using a pressing machine; S12: Turn over the machine: turn the machine to the back side through the convex pad turnover pad; S13: PCB fixing; S14: Lock decorative strip.

3. The production process of a large curvature display screen according to claim 2, characterized in that: Also includes: S15: Enter the screen barcode and glass barcode of the machine into the MES system; S16: Attach thermal conductive silicone to the IC position of the PCB board and install the machine's protective cover; S17: Lock protection cover.

4. The production process of a large curvature display screen according to claim 1, wherein: S6: a backlight inspection to obtain a backlight assembly, including: S6: Primary backlight inspection: Insert the left and right light strips into the light board respectively, light up the backlight, and check whether there are any foreign objects or white spots on the backlight. After the inspection passes, obtain the backlight assembly.

5. The production process of a large curvature display screen according to claim 1, wherein: S8: Secondary backlight inspection, including: S8: Turn on the backlight and check whether there is any plastic frame debris between the middle frame and the back panel, and whether there is any foreign matter in the diaphragm.

6. The production process of a large curvature display screen according to claim 2, wherein: The S13: PCB fixing includes: The S13: PCB fixing: flipping the left and right PCB boards with EVA at the same time and attaching them to the corresponding positions on the left and right sides of the back panel.

7. The production process of a large curvature display screen according to claim 3, characterized in that: In S16, the protective cover includes a left iron cover and a right iron cover.

8. A large curvature display screen, characterized in that: The large-curvature display screen is manufactured by the production process for a large-curvature display screen according to any one of claims 1 to 7.

9. The large curvature display screen according to claim 8, wherein: The curvature of the large-curvature display screen is R1000.

10. The large curvature display screen according to claim 8, wherein: The size of the large-curvature display screen is 31.5 inches.

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