Large-curvature display screen and production process thereof

Abstract

The invention provides a large-curvature display screen and a production technology thereof. The technology comprises the steps that S1, mylar is attached to a back plate; s4, assembling a light guide plate: putting a reflector plate on the back plate, and putting the light guide plate according to the limitation of a silica gel pad; s5, membrane assembly: aligning the back plate with the membrane, putting the membrane suspension loop into the back plate suspension loop, attaching the suspension loop mylar, and pressing the middle position of the membrane by using a pressing block so as to enable the membrane to be attached to the back plate; s7, clamping the middle frame: firstly clamping the middle frame into the upper left corner, pressing a sky side buckle to be clamped into the upper right corner, pressing left and right side buckles to be clamped into the left and right sides, and pressing a ground side buckle to completely clamp the middle frame into the backlight assembly; and S9, covering the glass: putting the whole piece of glass on a back plate, pressing the glass, putting a pressing block to fix the glass, sequentially tearing off the adhesive isolating membranes on the top side, the bottom side, the left side and the right side of the middle frame, and synchronously pressing the corresponding positions, so that the glass at the corresponding positions is adhered to the middle frame. The method supports flow line production of display screens with larger curvatures, and the production efficiency is greatly improved.

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 display screens and monitors with curved screens. This type of monitor uses a 90-degree vertical straight line in the middle of the screen as the axis, and the left and right screens are closed in the middle, thus presenting a curved screen effect. Compared with traditional flat-panel monitors, curved monitors are more in line with the physiological curvature of the human eye, which can greatly enhance the viewer's sense of being wrapped and immersed when watching. Therefore, curved monitors can bring a better visual experience than flat-panel monitors.

[0003] The greater the curvature, the greater the curvature, and the higher the production process requirements. For example, the production process of the curved R1000 display has its own particularity compared to the production of general curved models. The curved display of the prior art 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 small curvature such as 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 requirements on the curvature of the back panel and decorative strips.

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

[0008] The technical problem to be solved by the present invention is to provide a large curvature display screen and a production process thereof, which not only supports the assembly line production of display screens with larger curvatures and greatly promotes 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 comprises the following steps:

[0011] S1: back panel with Mylar;

[0012] S2: The back panel is attached with the left and right light strips and the left light strip cable is inserted;

[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 put the reflective sheet on the back plate, and then put the light guide plate in according to the limit of the silicone pad on the back plate;

[0015] S5: Diaphragm assembly: align the back plate with the diaphragm, put the diaphragm ear into the back plate ear, attach the ear Mylar to 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 check to obtain a backlight component;

[0017] S7: snapping the middle frame: first snapping the upper left corner of the middle frame, then pressing the buckle on the top side of the middle frame to snap the upper right corner, then pressing the buckles on the left and right sides of the middle frame at the same time to snap the left and right sides, and finally pressing the buckle on the bottom side of the middle frame to snap the middle frame completely into the backlight assembly;

[0018] S8: Secondary backlight inspection;

[0019] S9: Cover glass: Without tearing off the adhesive isolation film of 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 positions bond to the middle frame, and then 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 the glass together using a pressing machine;

[0023] S12: Turn over the machine: turn the machine over 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 protective cover of the machine;

[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 light bar and the right light bar into the light board respectively, light up the backlight, and check whether there are foreign objects and white masses on the backlight. After the inspection is passed, obtain the backlight assembly.

[0032] Optionally, the 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 film.

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

[0035] S13: PCB fixing: turning over 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 plate.

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

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

[0038] A large curvature display screen is manufactured by the above-mentioned production process of 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 the large-curvature display screen provided by the present invention can overcome the problems of film arching and blackening that are prone to occur during the production process of the large-curvature display screen, 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 provided by an embodiment of the present invention;

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

[0044] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the 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: The back panel is attached with the left and right light strips and the left light strip cable is inserted;

[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 put the reflective sheet on the back plate, and then put the light guide plate in according to the limit of the silicone pad on the back plate;

[0050] S5: Diaphragm assembly: align the back plate with the diaphragm, put the diaphragm ear into the back plate ear, attach the ear Mylar to 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 check to obtain a backlight component;

[0052] S7: snapping the middle frame: first snapping the upper left corner of the middle frame, then pressing the buckle on the top side of the middle frame to snap the upper right corner, then pressing the buckles on the left and right sides of the middle frame at the same time to snap the left and right sides, and finally pressing the buckle on the bottom side of the middle frame to snap the middle frame completely into the backlight assembly;

[0053] S8: Secondary backlight inspection;

[0054] S9: Cover glass: Without tearing off the adhesive isolation film of 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 positions bond to the middle frame, and then 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 operating 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 operating 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 fixed hanging ear positions in the diaphragm assembly step of S5, the problem that the hanging ear position of the existing diaphragm is shallow and the diaphragm is easy to jump off is solved; by conforming to the specific operating method of the backplane structure in the S7 card-in-frame step, the problem of easy film 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 the glass together using a pressing machine;

[0061] S12: Turn over the machine: turn the machine over 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 protective cover of the machine;

[0067] S17: Lock protection cover.

[0068] It can be seen from the above description that a complete production process for a large-curvature display screen is provided to minimize the problems that may exist in the production process of the 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 light bar and the right light bar into the light board respectively, light up the backlight, and check whether there are foreign objects and white masses on the backlight. After the inspection is passed, 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 film.

[0074] From the above description, it can be seen 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] S13: PCB fixing: turning over 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 plate.

[0077] It can be seen from the above description that by providing a specific PCB fixing method suitable for a display screen with curvature on both sides, the stability of the PCB installation can be ensured.

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

[0079] It can be seen from the above description that 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 large curvature display screen production process.

[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, so as to better meet the needs of users and the market.

[0085] Embodiment 1

[0086] Please refer to Figure 1 This embodiment provides a production process for a large curvature display screen, which at least includes 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 Mylar is attached to the back panel to prevent light leakage.

[0089] S2: The back panel is attached with the left and right light strips and the left light strip cable is inserted;

[0090] Here, in order to meet the characteristics of the large curvature of the back panel, the two-section light strips are attached separately on the left and right sides. Compared with the traditional single-section straight light strip operation method, the light shadow phenomenon can be effectively reduced. In addition, this work station also takes into account the insertion of the left light strip line at the same time, 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 limit the light guide plate. In addition, this station also takes care of the right light bar, which can reduce the working hours of backlight inspection to a certain extent.

[0093] S4: Light guide plate assembly:

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

[0095] Due to the large curvature of the back panel, the bottom side of the light guide plate is easy to rub against the light bar and damage the light guide plate. Therefore, through this step, the upper part of the light guide plate is placed on the back panel first, and then the middle position is pressed to make the light guide plate fit to the back panel along the curvature of the back panel, so as to make a display with a larger curvature.

[0096] S5: Diaphragm assembly:

[0097] Place the back panel according to the diaphragm structure, put the diaphragm's ear into the back panel's ear, and attach the ear Mylar at the corresponding position; because 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 with the traditional manufacturing process, this step adds the use of a pressing block jig to press and fix, and after the diaphragm ear position is in place, the ear-hanging Mylar is attached to the ear position. The latter can specifically solve the problem of the existing technology that the diaphragm is easy to fall off due to its shallow position; the combination of the two can ensure that the diaphragm fits tightly with the backboard, effectively avoiding the occurrence of diaphragm arch and light shadow problems.

[0099] S6: a backlight check to obtain a backlight component;

[0100] The first backlight inspection is to insert the light bar into the light board, turn on the backlight, and check for foreign objects, white masses, etc. Compared with the traditional process, due to the curvature of the backboard, it is necessary to press the diaphragm at the same position above and below the backlight to better detect foreign objects and white masses.

[0101] S7: Card in 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 it into the upper left corner of the middle frame, then press the buckle on the top side of the middle frame to snap it into its upper right corner, then press the buckles on the left and right sides of the middle frame at the same time to snap them into the left and right sides, and finally press the buckle on the ground side of the middle frame to completely snap the middle frame into the backlight assembly.

[0104] The traditional card-in-frame process is to first insert the upper left and right corners, which is easy to cause film arching problems for backlight components with curvature. The specific card-in-frame process steps provided in this embodiment are operated in accordance with the backplane structure, which can effectively avoid film arching and blackening problems caused by operating methods.

[0105] S8: Secondary backlight inspection;

[0106] The second backlight inspection is mainly to prevent the friction between the middle frame and the back panel after the middle frame is stuck and produce plastic frame chips, and to detect foreign objects hidden in the diaphragm.

[0107] S9: Cover glass:

[0108] Without tearing off the adhesive isolation film of the middle frame, first place the entire piece of glass on the back panel of the backlight assembly; then gently press the glass to the back panel; then put in a pressing block to fix the curvature of the glass; then tear off the adhesive isolation film on the top side of the middle frame, press the glass to fix it; then tear off the adhesive isolation film on the bottom side, press the glass to fix it; finally, tear off the adhesive isolation film on the middle frame at the same time, and press the glass to fix it. This completes the entire cover glass process, which can ensure that the curvature of the glass fits closely to the backlight and control the step difference within the ideal range.

[0109] Compared with the traditional cover glass step which is just 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 the large-curvature display screen provided in this embodiment can overcome the problems of film arching and blackening that are prone to occur during the production 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] Embodiment 2

[0112] Please refer to Figure 2 This embodiment is a further expansion of the first embodiment, providing a complete production process for a large-curvature display screen.

[0113] The production process of the large curvature display screen of this embodiment also 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 closely, thus preventing the risk of glass falling off.

[0118] S12: Flip:

[0119] Here, a convex turnover pad is placed and the machine table 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 of the back panel for fixation, then stick the 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 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 for heat dissipation, and then install the protective cover of the machine.

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

[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 the back-facing state. By flipping the machine to the front, it is convenient for the inspection personnel to inspect and test the screen.

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

[0135] Embodiment 3

[0136] This embodiment is based on the first or second embodiment and provides a large curvature display screen, which is manufactured by the above-mentioned large curvature display screen production process. The specific steps of the large curvature display screen production process are not repeated again. For details, please refer to the description of the first or second embodiment.

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

[0138] In some specific implementations, 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 display screens with larger curvatures, 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.

[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 specification 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: The back panel is attached with the left and right light strips and the left light strip cable is inserted; S3: Attach the silicone pad to the back panel and plug in the right light bar cable; S4: Light guide plate assembly: first put the reflective sheet on the back plate, and then put the light guide plate in according to the limit of the silicone pad on the back plate; S5: Diaphragm assembly: align the back plate with the diaphragm, put the diaphragm ear into the back plate ear, attach the ear Mylar to 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 check to obtain a backlight component; S7: snapping the middle frame: first snapping the upper left corner of the middle frame, then pressing the buckle on the top side of the middle frame to snap the upper right corner, then pressing the buckles on the left and right sides of the middle frame at the same time to snap the left and right sides, and finally pressing the buckle on the bottom side of the middle frame to snap the middle frame completely into the backlight assembly; S8: Secondary backlight inspection; S9: Cover glass: Without tearing off the adhesive isolation film of 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 positions bond to the middle frame, and then 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 the glass together using a pressing machine; S12: Turn over the machine: turn the machine over 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 as claimed in 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 protective cover of the machine; S17: Lock protection cover.

4. The production process of a large curvature display screen according to claim 1, characterized in that: S6: a backlight inspection to obtain a backlight component, including: S6: Primary backlight inspection: Insert the left light bar and the right light bar into the light board respectively, light up the backlight, and check whether there are foreign objects and white masses on the backlight. After the inspection is passed, obtain the backlight assembly.

5. The production process of a large curvature display screen according to claim 1, characterized in that: 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 film.

6. The production process of a large curvature display screen as claimed in claim 2, characterized in that: The S13: PCB fixing includes: S13: PCB fixing: turning over 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 plate.

7. The production process of a large curvature display screen as claimed in 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 a production process for a large curvature display screen as described in any one of claims 1 to 7.

9. A large curvature display screen as claimed in claim 8, characterized in that: The curvature of the large-curvature display screen is R1000.

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

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