An ultra-thin OLED backlight device

Abstract

The utility model relates to OLED backlight source technical field especially relates to a kind of ultra-thin OLED backlight source device. Its technical scheme includes rear shell, front shell, OLED backlight source module, drive shaft, driven shaft and mounting shaft, the inside fixed plate is placed in the rear shell upper end, the OLED backlight source module is set on the fixed plate upper end, the front shell is set on the rear shell upper side, the drive shaft and three groups of driven shaft are set in the rear shell inside, the mounting shaft is set in the rear shell side, the screw is set on the mounting shaft upper end, the threaded sleeve is set in the front shell lower end, the ball bearing one rotatingly installed with mounting shaft is embedded and installed in the inside four corners of the fixed plate, the drive shaft one end is provided with torsion block, the through-hole corresponding torsion block is clamped in the inside of the rear shell one end. The utility model is through linkage structure, only through rotating torsion block shell drives multiple screws to be fixed in front shell back, avoid the separate disassembly of multiple fixed parts, so that OLED backlight source module maintenance disassembly is time-saving and convenient.

Description

Technical Field

[0001] This utility model relates to the field of OLED backlight technology, and in particular to an ultra-thin OLED backlight device. Background Technology

[0002] OLED stands for Organic Light Emitting Diode. Traditional OLEDs are self-emissive, with each pixel emitting light independently, thus eliminating the need for an external backlight. They are also ultra-thin. By applying a voltage between the anode and cathode, electrons and holes are injected from the electrodes, recombine in the light-emitting layer, and release energy to excite organic molecules to emit light. Ultra-thin OLED backlights are widely used in foldable phones, rollable displays, ultra-thin computers, and tablets.

[0003] A Chinese patent for an OLED backlight (publication number: CN213583856U) was found. This patent technology includes an outer frame, a transmission interface, a power sealing interface, and an outer bottom shell. The inner wall of the outer frame is provided with an inner sealing strip around its circumference. A transmission line is located on the right outer wall of the outer frame, and the right end of the transmission line is fixedly connected to the transmission interface. Sealing plates are fixedly connected to both ends of the transmission interface, and a sealing cavity is provided on the inner wall of the transmission interface. A power sealing interface is fixedly connected to the rear outer wall of the outer frame. A left-side connecting groove is provided on the left inner wall of the power sealing interface, and a right-side connecting groove is fixedly connected to the right inner wall of the power sealing interface. This patent relates to the field of mobile phone backlight technology. This type of OLED backlight improves the waterproof performance of the backlight after installation inside a mobile phone, enhances its impact resistance, and alleviates the problems of vibration and external moisture intrusion affecting the backlight interface.

[0004] This patented technology has the advantage of good sealing when in use. However, during use, the frame structure supporting the backlight module is assembled with a large number of bolts. When the backlight module is damaged and needs maintenance, the disassembly and assembly of the frame structure is cumbersome and time-consuming. Therefore, we propose an ultra-thin OLED backlight device to solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an ultra-thin OLED backlight device.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultra-thin OLED backlight device, comprising a rear shell, a front shell, an OLED backlight module, a drive shaft, a driven shaft, and a mounting shaft. A partition is fixed inside the upper end of the rear shell, and the OLED backlight module is mounted on the upper end of the partition. The front shell is positioned above the rear shell. The rear shell contains a frame-shaped drive shaft and three sets of driven shafts. A mounting shaft located outside the drive shaft and driven shaft is positioned on the side of the rear shell. A screw is mounted on the upper end of the mounting shaft. Threaded sleeves are provided at the four corners of the lower end of the front shell. A ball bearing, rotatably mounted to the mounting shaft, is embedded at the four corners inside the partition. A torsion block is provided at one end of the drive shaft. A through hole corresponding to the torsion block is fitted inside one end of the rear shell. Meshing bevel gears are sleeved on the outer walls of both the drive shaft and the driven shaft. Meshing bevel gears are sleeved on the outer walls of the drive shaft, driven shaft, and mounting shaft.

[0007] Preferably, a bearing bracket is provided at each of the four corners inside the rear housing, and the drive shaft and driven shaft are rotatably mounted inside the bearing bracket. The bearing brackets rotatably mount the drive shaft and driven shaft, so that the drive shaft and driven shaft are rotatably supported inside the rear housing.

[0008] Preferably, ball bearings are embedded at each of the four corners of the lower inner wall of the rear shell, and the lower end of the mounting shaft is rotatably mounted inside the ball bearings. The lower end of the mounting shaft receives rotational support through the ball bearings.

[0009] Preferably, the upper inner wall of the front shell has symmetrically distributed positioning holes, and the upper end of the partition plate has symmetrically distributed positioning blocks that are slidably inserted into the positioning holes. When the front shell and the rear shell are assembled, the front shell is positioned before assembly by inserting positioning rods into the positioning holes.

[0010] Preferably, a rectangular groove corresponding to a through hole is formed inside one end of the rear shell, and a rectangular cover is fitted inside the rectangular groove. The rectangular groove and the rectangular cover are adapted to each other, and the height of the rectangular cover is located inside the rectangular groove, thus shielding the through hole. At the same time, the rectangular structure prevents the rectangular cover from rotating.

[0011] Preferably, one end of the rectangular cover is provided with a retaining ring, the outer wall of the torsion block has a retaining groove arranged in a circular array, and the inner wall of the retaining ring has retaining teeth arranged in a circular array that engage with the retaining grooves. After the retaining ring is sleeved on the outer wall of the torsion ring, it engages with the retaining grooves through the retaining teeth. Because the rectangular cover connected to the retaining ring is limited by the rectangular grooves, and the fixed retaining teeth engage with the retaining grooves, the automatic rotation of the torsion block is prevented, and the drive shaft remains stable after rotation through the retaining ring.

[0012] Preferably, the OLED backlight module includes an anode layer and a cathode layer, a substrate is disposed on the upper end of the anode layer, and a hole transport layer, a light-emitting layer and an electron transport layer are disposed between the anode layer and the cathode layer.

[0013] Preferably, the upper end of the partition is provided with a rectangular assembly frame, the OLED backlight module is located inside the assembly frame, and a pressing groove is formed on the upper inner wall of the front shell, the pressing groove pressing against the upper side of the OLED backlight module. The OLED backlight module is assembled in the assembly frame, and the pressing groove presses the edge of the OLED backlight module, which facilitates the adhesion of adhesive after the OLED backlight module is pressed and fixed.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The OLED backlight module of this utility model is installed inside the upper part of the rear shell, and the upper part is snapped on by the front shell. During the installation process, four screws are threadedly connected to the threaded sleeve. After the front shell and the rear shell are positioned, the drive shaft is rotated by rotating the torsion block. Under the drive of the linkage structure, the four screws pre-installed inside the rear shell rotate synchronously and are threaded into the threaded sleeve, thereby fixing the OLED backlight module. When maintaining the OLED backlight module, the disassembly and assembly of multiple fixed parts can be achieved by rotating the torsion block between the front shell and the rear shell. The maintenance of the OLED backlight module is time-saving and convenient. Attached Figure Description

[0016] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the front shell of this utility model viewed from below;

[0018] Figure 3 This is a front-view three-dimensional structural diagram of the rear shell of this utility model;

[0019] Figure 4 This is a top-view three-dimensional structural diagram of the rear shell of this utility model;

[0020] Figure 5 This is a top-view three-dimensional structural diagram of the interior of the rear shell of this utility model;

[0021] Figure 6 This is a side view of the three-dimensional structure of the torsion block of this utility model.

[0022] Reference numerals: 1. Rear shell; 2. Front shell; 3. OLED backlight module; 4. Slot; 5. Pressing groove; 6. Threaded sleeve; 7. Positioning hole; 8. Positioning block; 9. Assembly frame; 10. Substrate; 11. Anode layer; 12. Hole transport layer; 13. Light-emitting layer; 14. Electron transport layer; 15. Cathode layer; 16. Rectangular cover; 17. Ball bearing one; 18. Partition plate; 19. Through hole; 20. Rectangular groove; 21. Drive shaft; 22. Driven shaft; 23. Bevel gear one; 24. Ball bearing two; 25. Mounting shaft; 26. Screw; 27. Bevel gear two; 28. Bearing bracket; 29. ​​Torque block; 30. Snap ring; 31. Snap tooth. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1-6 As shown, the present invention proposes an ultra-thin OLED backlight device, comprising a rear shell 1, a front shell 2, an OLED backlight module 3, a drive shaft 21, a driven shaft 22, and a mounting shaft 25. A partition 18 is fixed inside the upper end of the rear shell 1, and the OLED backlight module 3 is disposed on the upper end of the partition 18. The front shell 2 is disposed above the rear shell 1. The rear shell 1 contains a frame-shaped arrangement of the drive shaft 21 and three sets of driven shafts 22. A mounting shaft 25 is disposed on the side of the rear shell 1, located outside the drive shaft 21 and driven shaft 22. The upper end of the mounting shaft 25 is provided with a screw 26, and the four corners of the lower end of the front housing 2 are provided with threaded sleeves 6. The four corners of the partition plate 18 are embedded with ball bearings 17 that are rotatably mounted with the mounting shaft 25. One end of the drive shaft 21 is provided with a torsion block 29, and the inner end of the rear housing 1 is provided with a through hole 19 corresponding to the torsion block 29. The outer walls of the drive shaft 21 and the driven shaft 22 are both sleeved with bevel gears 23 that mesh with each other. The outer walls of the drive shaft 21, the driven shaft 22 and the mounting shaft 25 are all sleeved with bevel gears 27 that mesh with each other.

[0025] Bearing brackets 28 are provided at the four corners of the rear housing 1, and the drive shaft 21 and the driven shaft 22 are rotatably mounted inside the bearing brackets 28.

[0026] Ball bearings 24 are embedded in the four corners of the lower inner wall of the rear shell 1, and the lower end of the mounting shaft 25 is rotatably mounted inside the ball bearings 24.

[0027] The upper inner wall of the front shell 2 is provided with symmetrically distributed positioning holes 7, and the upper end of the partition plate 18 is provided with symmetrically distributed positioning blocks 8 that are slidably inserted into the positioning holes 7.

[0028] A rectangular groove 20 corresponding to the through hole 19 is opened inside one end of the rear shell 1, and a rectangular cover 16 is fitted inside the rectangular groove 20.

[0029] A retaining ring 30 is provided at one end of the rectangular cover 16, and a retaining groove 4 arranged in a ring array is provided on the outer wall of the twisting block 29. A retaining tooth 31 arranged in a ring array is provided on the inner wall of the retaining ring 30 and is engaged with the retaining groove 4.

[0030] The OLED backlight module 3 includes an anode layer 11 and a cathode layer 15. A substrate 10 is disposed on the upper end of the anode layer 11. A hole transport layer 12, a light-emitting layer 13 and an electron transport layer 14 are disposed between the anode layer 11 and the cathode layer 15.

[0031] A rectangular assembly frame 9 is provided at the upper end of the partition 18. The OLED backlight module 3 is located inside the assembly frame 9. A pressing groove 5 is provided on the upper inner wall of the front shell 2. The pressing groove 5 is pressed against the upper side of the OLED backlight module 3.

[0032] Based on the implementation steps of Embodiment 1: First, the OLED backlight module 3 is placed in the assembly frame 9 of the partition 18 at the upper end of the rear shell 1 to ensure that the module is placed stably. Then, the front shell 2 is aligned with the rear shell 1. The positioning hole 7 at the upper end of the front shell 2 is precisely inserted into the positioning block 8 on the partition 18 to achieve the initial positioning of the front shell 2 and the rear shell 1. At this time, the drive shaft 21, driven shaft 22 and mounting shaft 25 inside the rear shell 1 have been pre-installed with screws 26, and these shafts are stably supported by the bearing bracket 28 and the ball bearing 24.

[0033] During installation, simply rotate the torsion block 29 corresponding to the through hole 19. The torsion block 29 drives the drive shaft 21 to rotate. The drive shaft 21 meshes with the bevel gear 23 on the outer wall of the driven shaft 22, transmitting torque synchronously. The drive shaft 21 drives the driven shaft 22 to rotate. At the same time, the drive shaft 21, the driven shaft 22, and the bevel gear 27 on the outer wall of the mounting shaft 25 also mesh with each other, forming a linkage structure. This causes the screws 26 on the four mounting shafts 25 to rotate synchronously. These screws 26 are threaded into the pre-set threaded sleeves 6. As the screws 26 rotate, the front shell 2 and the rear shell 1 are firmly fixed, completing the encapsulation of the OLED backlight module 3.

[0034] During maintenance, the reverse rotation of the torsion block 29 causes the drive shaft 21 to reverse the linkage structure, and the screw 26 is simultaneously unscrewed, allowing the front shell 2 to be easily opened, enabling quick disassembly of the OLED backlight module 3 and greatly simplifying the maintenance process.

[0035] By utilizing the linkage structure between the drive shaft 21, driven shaft 22, and mounting shaft 25, and through the meshing of bevel gears, multiple screws 26 are rotated and installed synchronously. This transforms the traditional independent installation method of multiple bolts into a linked installation, significantly improving installation efficiency.

[0036] The linkage structure allows the disassembly and assembly of multiple fixed parts to be completed by simply rotating a single toggle block 29, greatly improving maintenance efficiency. In addition, the device has a compact structure, which meets the application requirements of the ultra-thin OLED backlight module 3.

[0037] It is worth noting that the substrate 10 is an ultra-thin glass, and the anode layer 11 serves as the hole injection end, satisfying both conductivity and light transmittance. After holes are injected from the anode layer 11, they are rapidly transported to the light-emitting layer 13 through the high mobility material of HTL, blocking electron backflow and preventing non-radiative recombination near the anode layer 11. Electrons and holes in the light-emitting layer 13 recombine in the EML to form excitons, which de-excite light. After electrons are injected from the cathode layer 15, they migrate to the EML through ETL, blocking the hole layer from diffusing to the cathode layer 15 and improving recombination efficiency. The cathode layer 15 reflects light to the light-emitting side, increasing brightness. After applying voltage...

[0038] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An ultra-thin OLED backlight device, comprising a rear shell (1), a front shell (2), an OLED backlight module (3), a drive shaft (21), a driven shaft (22), and a mounting shaft (25), characterized in that: A partition (18) is fixed inside the upper end of the rear shell (1). An OLED backlight module (3) is provided on the upper end of the partition (18). A front shell (2) is provided above the rear shell (1). A drive shaft (21) and three sets of driven shafts (22) are arranged in a frame shape inside the rear shell (1). A mounting shaft (25) located outside the drive shaft (21) and driven shaft (22) is provided on the side of the rear shell (1). A screw (26) is provided on the upper end of the mounting shaft (25). Threaded sleeves are provided at the four corners of the lower end of the front shell (2). The tube (6) has ball bearings (17) that are rotatably mounted on the mounting shaft (25) embedded at the four corners of the partition (18). One end of the drive shaft (21) is provided with a torsion block (29). One end of the rear shell (1) is provided with a through hole (19) corresponding to the torsion block (29). The outer walls of the drive shaft (21) and the driven shaft (22) are fitted with bevel gears (23) that mesh with each other. The outer walls of the drive shaft (21), the driven shaft (22) and the mounting shaft (25) are fitted with bevel gears (27) that mesh with each other.

2. The ultra-thin OLED backlight device according to claim 1, characterized in that: Bearing brackets (28) are provided at the four corners inside the rear shell (1), and the drive shaft (21) and driven shaft (22) are rotatably installed inside the bearing brackets (28).

3. The ultra-thin OLED backlight device according to claim 1, characterized in that: The lower end of the rear shell (1) has four corners where ball bearings (24) are embedded and installed, and the lower end of the mounting shaft (25) is rotatably installed inside the ball bearings (24).

4. The ultra-thin OLED backlight device according to claim 1, characterized in that: The upper inner wall of the front shell (2) is provided with symmetrically distributed positioning holes (7), and the upper end of the partition (18) is provided with symmetrically distributed positioning blocks (8) that are slidably inserted into the positioning holes (7).

5. The ultra-thin OLED backlight device according to claim 1, characterized in that: The rear shell (1) has a rectangular groove (20) with a corresponding through hole (19) inside one end, and a rectangular cover (16) is fitted inside the rectangular groove (20).

6. The ultra-thin OLED backlight device according to claim 5, characterized in that: The rectangular cover (16) is provided with a retaining ring (30) at one end, the outer wall of the twist block (29) is provided with a retaining groove (4) arranged in a ring array, and the inner wall of the retaining ring (30) is provided with retaining teeth (31) arranged in a ring array and engaged with the retaining groove (4).

7. The ultra-thin OLED backlight device according to claim 1, characterized in that: The OLED backlight module (3) includes an anode layer (11) and a cathode layer (15). A substrate (10) is disposed on the upper end of the anode layer (11). A hole transport layer (12), a light-emitting layer (13) and an electron transport layer (14) are disposed between the anode layer (11) and the cathode layer (15).

8. The ultra-thin OLED backlight device according to claim 1, characterized in that: The upper end of the partition (18) is provided with a rectangular assembly frame (9), the OLED backlight module (3) is located inside the assembly frame (9), and the upper inner wall of the front shell (2) is provided with a pressing groove (5), which is pressed against the upper side of the OLED backlight module (3).

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