Flexible backplane processing device for improving uniformity of curved backlight

Abstract

This invention provides a flexible backplate processing device for improving the uniformity of curved backlighting, belonging to the field of display technology. It includes a processing device, with a traveling carriage slidably connected to its top. A first hydraulic rod is fixedly connected to the inner wall of the traveling carriage, and a first fixed frame is fixedly connected to the top of the first hydraulic rod. A first sliding frame and a second sliding frame are slidably connected to the outer surface of the first fixed frame. A second hydraulic rod is fixedly connected to the top surface of the processing device, and a clamping mechanism is provided at the output end of the second hydraulic rod. A support mechanism is provided at the top of the clamping mechanism. This invention improves the overall light emission uniformity of the backlight by setting up a support mechanism and creating a first V-shaped groove with an asymmetrical slope in the central area; and by setting a second V-shaped groove with stepped sections in the left and right transition areas to increase the light emission radiation range, thereby improving the overall light emission uniformity of the backlight of the support plate.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a flexible backplate processing device for improving the uniformity of curved backlighting. Background Technology

[0002] With the continuous development of display technology, curved display devices have become mainstream products in the market because they are more in line with the physiological structure of the human eye and can provide a more immersive visual experience. Curved LCD display devices require the backplate in the backlight module to be bent and formed as a single unit with the LCD screen, thus creating a curved structure and achieving a curved design for the display device. The backlight module of a curved LCD display device mainly consists of core components such as a backplate, reflective sheet, light guide plate, and optical films. Among these, the backplate, as the basic supporting component of the backlight module, has a manufacturing quality that affects not only the assembly accuracy of the light guide plate and optical films but also the brightness uniformity of the displayed image.

[0003] In summary, during the bonding and assembly process of the curved backplate and the lamp board, the uneven deformation of the lamp board during installation and bonding is caused by the different curvatures of various parts of the backplate. This results in inconsistent effective light mixing distances between the light-emitting elements at different positions on the lamp board and the optical film, leading to uneven brightness of the displayed image. Existing technologies mainly compensate for the light mixing distance by changing the thickness of local parts of the lamp board. However, reducing the thickness of the lamp board in certain areas weakens the heat dissipation performance of the LED chips during operation. After long-term operation, the LED chips are prone to light decay due to high temperatures, which also leads to a reduction in their lifespan.

[0004] Therefore, this application provides a flexible backplate processing device to improve the uniformity of curved backlighting to meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a flexible backplate processing device for improving the uniformity of curved backlighting, thereby solving the aforementioned problems. The device places the support plate to be processed on an arc-shaped plate. The arc-shaped plate undergoes an arc deformation due to adsorption, completing the adsorption at the bottom of the support plate and auxiliary clamping on both outer walls. Then, a milling machine and a laser head sequentially complete various processing steps. The milling machine performs plate thinning and rough machining of the V-groove, while the laser head performs fine machining of the V-groove. The milling machine thins the central area of ​​the support plate and creates a first V-groove to guide the light direction; a second V-groove with a stepped section is processed in the transition area to increase the light emission angle; and a third V-groove is created in the bending area to enhance light scattering, thus improving the uniformity of backlighting from the support plate and solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A flexible backplate processing device for improving the uniformity of curved backlighting includes a processing equipment. A traveling carriage is slidably connected to the top of the processing equipment. A first hydraulic rod is fixedly connected to the inner wall of the traveling carriage. A first fixed frame is fixedly connected to the top of the first hydraulic rod. A first sliding frame and a second sliding frame are slidably connected to the outer surface of the first fixed frame. A milling machine is installed inside the first sliding frame. A laser head is installed inside the second sliding frame. A second hydraulic rod is fixedly connected to the top surface of the processing equipment. A clamping mechanism is installed at the output end of the second hydraulic rod. A support mechanism is installed at the top of the clamping mechanism. The support mechanism includes a support plate. Optionally, the clamping mechanism includes a second fixed frame, which is fixedly connected to the output end of the second hydraulic rod. An airbag is fixedly connected to the top of the second fixed frame. A negative pressure tube is fixedly connected to the end of the second fixed frame away from the airbag. The negative pressure tube passes through the second fixed frame and communicates with the interior of the airbag. A vacuum pump is externally connected to the end of the negative pressure tube away from the second fixed frame. An arc-shaped plate is fixedly connected to the end of the airbag away from the second fixed frame. A suction cup is fixedly connected to the outer surface of the arc-shaped plate.

[0007] Optionally, clamping plates are fixedly connected to the outer walls of both sides of the arc-shaped plate. The clamping plates are used to clamp and fix the outer walls of both sides of the support plate. During the negative pressure adsorption operation, the arc-shaped plate undergoes arc deformation under the adsorption force of the suction cup and the support plate, causing the edges of both sides of the arc-shaped plate to tilt towards the support plate. Simultaneously, the clamping plates fixed on its outer side are brought close to the outer walls of both sides of the support plate, thereby completing the auxiliary clamping and fixing of the support plate.

[0008] Optionally, a locking block is fixedly connected to the top outer wall of the arc-shaped plate, and an inclined portion is provided on the outer surface of the locking block for guiding the placement of the support plate.

[0009] Optionally, a fixed shaft is fixedly connected to the outer wall of the arc-shaped plate near the card block. The outer surface of the fixed shaft is slidably connected to the inner wall of the second fixed frame. A spring is fixedly connected to the outer surface of the arc-shaped plate. The end of the spring away from the arc-shaped plate is fixedly connected to the second fixed frame. The spring is used to assist the arc-shaped plate in resetting.

[0010] Optionally, the support plate is placed on top of the arc-shaped plate, and the inner surface of the support plate is divided into multiple processing areas, which are sequentially set as the left bending area, the left transition area, the center area, the right transition area, and the right bending area from left to right. It is worth noting that the left bending area and the right bending area are areas with large curvature changes, the left transition area and the right transition area are transition areas with gradual curvature changes, and the center area is an area with relatively gentle curvature.

[0011] Optionally, the central region is thinned, and a first V-shaped groove is formed on the central region. The first V-shaped groove extends in a direction perpendicular to the center line of curvature, and the opening of the first V-shaped groove points to the light-emitting surface of the support plate.

[0012] Optionally, the walls of the first V-groove are asymmetrically arranged, with the slope of the groove wall near the light-incident side being less than the slope of the groove wall away from the light-incident side. The first V-groove is used to deflect the incident light rays toward the light-out surface.

[0013] Optionally, the outer surfaces of the left transition area and the right transition area are respectively provided with a second V-shaped groove. The second V-shaped groove extends in a direction parallel to the straight edge of the curved screen. The interior of the second V-shaped groove is provided with a stepped portion, which is used to improve the refraction of light and thus improve the uniformity of backlight illumination.

[0014] Optionally, a third V-shaped groove is formed on the outer surface of both the left and right bending areas. The third V-shaped groove extends along the curvature direction and is used to enhance light scattering and compensate for the brightness attenuation of the left and right bending areas.

[0015] Optionally, the two walls of the third V-groove are symmetrically arranged, and the opening of the third V-groove points towards the light-emitting surface of the support plate.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above-mentioned solution, the flexible backplate processing device for improving the uniformity of curved backlighting provided in this application, by setting up a clamping mechanism, uses a suction cup to adsorb the back of the support plate through negative pressure. As the gas inside the airbag is discharged, the arc plate shrinks and forms a rigid contact with the second fixed frame, thereby providing rigid support conditions for subsequent milling and thinning and laser processing, effectively avoiding processing deviations caused by processing vibration and workpiece deformation.

[0017] By setting up a support mechanism and dividing the outer surface of the support plate into regions according to the curvature change law, a first V-shaped groove with an asymmetrical slope structure is opened in the central area, which can guide the incident light to improve the brightness of the display at the positive viewing angle; a second V-shaped groove with a stepped part is set in the left and right transition areas, which is used to improve the light emission radiation range through the reflection and refraction formed by the stepped part plane and the inclined surface, thereby improving the overall light emission uniformity of the support plate backlight. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0019] Figure 1This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the processing equipment of the present invention; Figure 3 This is a schematic diagram of the clamping mechanism and support mechanism of the present invention; Figure 4 This is a schematic diagram of the clamping mechanism of the present invention; Figure 5 This is a schematic diagram of the precision machining structure of the support mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram of A in the middle; Figure 7 This is a schematic diagram of the support mechanism of the present invention before precision machining; Figure 8 This is a schematic diagram of the left bending area and the third V-groove structure of the present invention.

[0020] Figure label: 1. Processing equipment; 2. Traveling vehicle; 3. First hydraulic rod; 4. First fixed frame; 5. First sliding frame; 501. Engraving and milling machine; 6. Second sliding frame; 601. Laser head; 7. Second hydraulic rod; 8. Clamping mechanism; 801. Second fixed frame; 802. Negative pressure pipe; 803. Airbag; 804. Arc plate; 805. Suction cup; 806. Clamping block; 807. Inclined part; 808. Fixed shaft; 809. Spring; 810. Clamping plate; 9. Support mechanism; 91. Support plate; 92. Left bending area; 93. Left transition area; 94. Central area; 941. First V-groove; 95. Right transition area; 96. Right bending area; 97. Second V-groove; 971. Stepped part; 98. Third V-groove.

[0021] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0022] The following is a detailed description of a flexible backplate processing device for improving the uniformity of curved backlighting provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0024] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0025] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0026] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0027] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a flexible backplate processing device for improving the uniformity of curved backlighting, including a processing device 1. A traveling carriage 2 is slidably connected to the top of the processing device 1. A first hydraulic rod 3 is fixedly connected to the inner wall of the traveling carriage 2. A first fixed frame 4 is fixedly connected to the top of the first hydraulic rod 3. A first sliding frame 5 and a second sliding frame 6 are slidably connected to the outer surface of the first fixed frame 4. A milling machine 501 is provided inside the first sliding frame 5 to complete the thinning processing of the support plate 91 and the rough milling of the first V-groove 941, the second V-groove 97 and the third V-groove 98. A laser head 601 is provided inside the second sliding frame 6 to complete the finishing processing of the first V-groove 941, the second V-groove 97 and the third V-groove 98 on the support plate 91. A second hydraulic rod 7 is fixedly connected to the top surface of the processing device 1. A clamping mechanism 8 is provided at the output end of the second hydraulic rod 7. A support mechanism 9 is provided at the top of the clamping mechanism 8. The support mechanism 9 includes a support plate 91.

[0028] In this embodiment, as Figures 3 to 4 As shown, the clamping mechanism 8 includes a second fixed frame 801, which is fixedly connected to the output end of the second hydraulic rod 7. An airbag 803 is fixedly connected to the top of the second fixed frame 801. A negative pressure tube 802 is fixedly connected to the end of the second fixed frame 801 away from the airbag 803. The negative pressure tube 802 passes through the second fixed frame 801 and communicates with the interior of the airbag 803. A vacuum pump is externally connected to the end of the negative pressure tube 802 away from the second fixed frame 801. An arc-shaped plate 804 is fixedly connected to the end of the airbag 803 away from the second fixed frame 801. A suction cup 805 is fixedly connected to the outer surface of the arc-shaped plate 804. The support plate 91 is placed on the arc-shaped plate 804, so that the suction cup 805 adheres to the back side of the support plate 91. The vacuum pump performs a negative pressure operation on the interior of the airbag 803 through the negative pressure tube 802. The suction cup 805 tightly adheres to the back side of the support plate 91 through the negative pressure force. After the suction cup 805 and the support plate 91 are sealed, the airbag 803 will contract and deform due to the discharge of internal gas under continuous negative pressure.

[0029] As the airbag 803 gradually contracts, the arc-shaped plate 804 moves towards the second fixed frame 801. When the airbag 803 is fully contracted, the bottom surface of the arc-shaped plate 804 is in contact with the top surface of the second fixed frame 801. At this time, the arc-shaped plate 804 switches from flexible support by the airbag to rigid contact with the second fixed frame 801, thereby improving the overall rigidity of its structure and providing stable and reliable support and positioning conditions for subsequent milling and laser processing.

[0030] Clamping plates 810 are fixedly connected to the outer walls of both sides of the arc plate 804. The clamping plates 810 are used to clamp and fix the outer walls of both sides of the support plate 91. It is worth noting that during the negative pressure adsorption operation, the arc plate 804 undergoes arc deformation under the adsorption force of the suction cup 805 and the support plate 91, causing the two sides of the arc plate 804 to tilt towards the support plate 91. Simultaneously, the clamping plates 810 fixed on its outer side are brought close to the outer walls of both sides of the support plate 91, thereby completing the auxiliary clamping and fixing of the support plate 91.

[0031] A locking block 806 is fixedly connected to the top outer wall of the arc-shaped plate 804. An inclined portion 807 is provided on the outer surface of the locking block 806, which guides the placement of the support plate 91. A fixed shaft 808 is fixedly connected to the outer wall of the arc-shaped plate 804 near the locking block 806. The outer surface of the fixed shaft 808 is slidably connected to the inner wall of the second fixed frame 801. A spring 809 is fixedly connected to the outer surface of the arc-shaped plate 804. The end of the spring 809 away from the arc-shaped plate 804 is fixedly connected to the second fixed frame 801. The spring 809 assists in the repositioning of the arc-shaped plate 804. After the processing is completed, the [unclear - likely referring to a specific mechanism or device] is closed. The vacuum pump is shut off, and gas is slowly introduced into the airbag 803 through the negative pressure pipe 802, causing the airbag 803 to gradually expand during inflation, pushing the arc plate 804 upward, thereby disengaging the arc plate 804 from the second fixing frame 801. During this process, the arc plate 804 returns to its initial position under the action of the spring 809. At the same time, as the arc plate 804 resets, the clamping plate 810 disengages from the outer walls on both sides of the support plate 91, and the suction cup 805 releases its adsorption force on the back of the support plate 91, so that the support plate 91 can be removed to place the next support plate 91 to be processed.

[0032] In this embodiment, as Figure 5 As shown, the inner surface of the support plate 91, placed on top of the arc plate 804, is divided into multiple processing areas, which are set from left to right as the left bending area 92, the left transition area 93, the center area 94, the right transition area 95, and the right bending area 96. Among them, the left bending area 92 and the right bending area 96 are areas with large curvature changes, the left transition area 93 and the right transition area 95 are transition areas with gradual curvature changes, and the center area 94 is an area with relatively gentle curvature.

[0033] like Figure 7 As shown, before finishing, the central area 94 of the support plate 91 is thinned. By adjusting the thickness of the central area 94, the internal light mixing stroke is effectively increased. A first V-groove 941 is provided on the central area 94. The first V-groove 941 extends in a direction perpendicular to the curvature center line, and the opening of the first V-groove 941 points towards the light-emitting surface of the support plate 91.

[0034] The first V-groove 941 has an asymmetrical groove wall, with the groove wall slope closer to the light-incident side being smaller than that of the groove wall farther from the light-incident side. The first V-groove 941 is used to deflect the incident light rays toward the light-out surface, thereby guiding the light rays toward the light-out surface and improving the brightness at the positive viewing angle.

[0035] like Figure 6 As shown, the outer surfaces of the left transition zone 93 and the right transition zone 95 are respectively provided with second V-shaped grooves 97. The second V-shaped grooves 97 extend in a direction parallel to the straight edge of the curved screen. The interior of the second V-shaped grooves 97 is provided with stepped portions 971. After light enters the stepped portions 971, it will be reflected and refracted at the stepped plane and the stepped slope, thereby effectively improving the radiation angle range of the emitted light.

[0036] like Figure 8 As shown, a third V-groove 98 is provided on the outer surface of both the left bending region 92 and the right bending region 96. The third V-groove 98 extends along the curvature direction and is used to enhance light scattering and compensate for the brightness attenuation caused by the curvature change in the left bending region 92 and the right bending region 96.

[0037] The two walls of the third V-groove 98 are symmetrically arranged, and the opening of the third V-groove 98 points towards the light-emitting surface of the support plate 91.

[0038] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A flexible backplate processing device for improving the uniformity of curved backlighting, comprising a processing device (1), wherein a traveling carriage (2) is slidably connected to the top of the processing device (1), a first hydraulic rod (3) is fixedly connected to the inner wall of the traveling carriage (2), a first fixed frame (4) is fixedly connected to the top of the first hydraulic rod (3), a first sliding frame (5) and a second sliding frame (6) are slidably connected to the outer surface of the first fixed frame (4), a milling machine (501) is provided inside the first sliding frame (5), a laser head (601) is provided inside the second sliding frame (6), and a second hydraulic rod (7) is fixedly connected to the top surface of the processing device (1), characterized in that, The output end of the second hydraulic rod (7) is provided with a clamping mechanism (8), and the top of the clamping mechanism (8) is provided with a support mechanism (9), which includes a support plate (91). The clamping mechanism (8) includes: The second fixed frame (801) is fixedly connected to the output end of the second hydraulic rod (7). An airbag (803) is fixedly connected to the top of the second fixed frame (801). A negative pressure tube (802) is fixedly connected to the end of the second fixed frame (801) away from the airbag (803). An arc plate (804) is fixedly connected to the end of the airbag (803) away from the second fixed frame (801). A suction cup (805) is fixedly connected to the outer surface of the arc plate (804).

2. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 1, characterized in that, The two outer walls of the arc plate (804) are fixedly connected with clamping plates (810), which are used to clamp and fix the two outer walls of the support plate (91).

3. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 2, characterized in that, The top outer wall of the arc plate (804) is fixedly connected to a locking block (806), and the outer surface of the locking block (806) is provided with an inclined part (807), which is used to guide the placement of the support plate (91).

4. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 1, characterized in that, A fixed shaft (808) is fixedly connected to the outer wall of the arc plate (804) near the card block (806). The outer surface of the fixed shaft (808) is slidably connected to the inner wall of the second fixed frame (801). A spring (809) is fixedly connected to the outer surface of the arc plate (804). The end of the spring (809) away from the arc plate (804) is fixedly connected to the second fixed frame (801). The spring (809) is used to assist the arc plate (804) in resetting.

5. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 1, characterized in that, The support plate (91) is placed on top of the arc plate (804). The inner surface of the support plate (91) is divided into multiple processing areas, which are set from left to right as the left bending area (92), the left transition area (93), the center area (94), the right transition area (95), and the right bending area (96).

6. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 5, characterized in that, The central area (94) is thinned, and a first V-shaped groove (941) is provided on the central area (94). The first V-shaped groove (941) extends in a direction perpendicular to the center line of curvature, and the opening of the first V-shaped groove (941) points to the light-emitting surface of the support plate (91).

7. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 6, characterized in that, The first V-groove (941) has an asymmetrical groove wall, with the groove wall slope closer to the light-incident side being smaller than the groove wall slope further away from the light-incident side. The first V-groove (941) is used to deflect the incident light rays toward the light-out surface.

8. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 5, characterized in that, The outer surfaces of the left transition area (93) and the right transition area (95) are respectively provided with a second V-shaped groove (97). The second V-shaped groove (97) extends in a direction parallel to the straight edge of the curved screen. The interior of the second V-shaped groove (97) is provided with a stepped portion (971). The stepped portion (971) is used to improve the refraction of light to improve the uniformity of backlight illumination.

9. The flexible backplate processing device for improving the uniformity of curved backlighting according to claim 5, characterized in that, The outer surfaces of the left bending area (92) and the right bending area (96) are provided with a third V-shaped groove (98). The third V-shaped groove (98) extends along the curvature direction and is used to enhance light scattering and to compensate for the brightness attenuation of the left bending area (92) and the right bending area (96).

10. The flexible backplate processing apparatus for improving the uniformity of curved backlighting according to claim 9, characterized in that, The two walls of the third V-groove (98) are symmetrically arranged, and the opening of the third V-groove (98) points towards the light-emitting surface of the support plate (91).

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