Display module for preventing light leakage

Abstract

A display module capable of preventing light leakage can prevent light leakage while suppressing deformation of the structure. The display module includes an iron bracket having a hollowed-out hole, a light guide plate, a light bar disposed on the side of the light guide plate, and a reinforcing structure disposed in the hollowed-out hole of the iron bracket. The light bar includes a flexible printed circuit board and a plurality of light emitting diodes. The reinforcing structure includes a reinforcing material and an adhesive layer. The reinforcing material is attached to the hollowed-out hole to suppress deformation of the flexible printed circuit board or the light guide plate. The hardness of the reinforcing material is greater than the hardness of polyethylene terephthalate (PET), and the reinforcing material is made of polyimide (PI) or metal, which can suppress deformation of the flexible printed circuit board or the light guide plate. The reinforcing structure is configured such that the reinforcing material covers the entire hollowed-out hole, and the adhesive layer completely covers the corresponding attachment position of the light bar, which can further prevent light leakage.

Description

Technical Field

[0001] This disclosure relates to a display module that prevents light leakage, and more particularly to a reinforcing structure disposed on a flexible printed circuit board or light guide plate that has been perforated to prevent deformation. Background Technology

[0002] When display modules are designed to be ultra-thin and key materials are thinned, light leakage issues can easily occur after environmental testing due to the deformation and arching of the flexible printed circuit board or light guide plate. To improve this light leakage problem, a reinforcement structure containing polyethylene terephthalate (PET) is typically used to reinforce and fix the module at the perforation in the bracket. Please refer to... Figure 1A A perspective view of a known display module designed to prevent light leakage is shown. The reinforcing structure 10 is disposed in a cutout in the iron bracket 100 and does not cover the reflector 330 of the light strip 300.

[0003] However, polyethylene terephthalate (PET) is relatively soft and typically cannot effectively suppress deformation of the display module structure. Please refer to... Figure 1B , picture Figure 1A The image shows a side view of the display module. The reinforcing structure 10 includes a reinforcing material 11 and an adhesive layer 12. The reinforcing material 11 can be polyethylene terephthalate (PET), and the adhesive layer 12 completely covers the corresponding attachment area of ​​the light strip 300. The width of the reinforcing material 11 is equal to the width of the adhesive layer 12. Due to the low hardness of the reinforcing material 11 and its incomplete coverage of the entire light strip 300, light leakage may occur due to deformation of the light guide plate 200 or the flexible printed circuit board 320.

[0004] Therefore, how to provide a reinforcing structure that can prevent light leakage from the display module while suppressing structural deformation of the display module is a goal that those skilled in the art are constantly seeking to improve. Summary of the Invention

[0005] According to one embodiment of the present disclosure, a display module for preventing light leakage includes an iron bracket with a perforated hole, a light guide plate, a light strip disposed on the side of the light guide plate, and includes a flexible printed circuit board and a plurality of light-emitting diodes, as well as a reinforcing structure disposed on the perforated hole of the iron bracket, which includes a reinforcing material and an adhesive layer, wherein the reinforcing material is attached to the perforated hole to suppress the deformation of the flexible printed circuit board or the light guide plate.

[0006] In some embodiments, the hardness of the reinforcing material is greater than that of polyethylene terephthalate (PET), and the reinforcing material is made of polyimide (PI) or metal.

[0007] In some implementations, the reinforcing material of the reinforcing structure is a metal.

[0008] In some implementations, the thickness of the reinforcing material is three times the thickness of the adhesive layer.

[0009] In some implementations, the length and width of the reinforcing material are less than or equal to the length and width of the perforated hole in the iron support.

[0010] In some implementations, the thickness of the reinforcing material is less than or equal to the thickness of the iron support.

[0011] In some embodiments, the light strip has a reflective sheet, and there is an overlapping area between the reinforcing material and the reflective sheet, and the coverage distance of the overlapping area is greater than zero.

[0012] In some implementations, the width of the adhesive layer is less than or equal to the width of the light strip.

[0013] In some implementations, the reinforcement structure is configured such that the reinforcement material covers the entire hollowed-out hole, and the adhesive layer completely covers the corresponding attachment area of ​​the light strip.

[0014] In some implementations, the reinforcing material and adhesive layer are fabricated simultaneously on a flexible printed circuit board, making the reinforcing structure and the light strip an integrated design.

[0015] In the above-disclosed embodiments, a display module for preventing light leakage includes a metal bracket with a perforated hole, a light guide plate, a light strip disposed on the side of the light guide plate, a flexible printed circuit board and multiple light-emitting diodes, and a reinforcing structure disposed in the perforated hole of the metal bracket. The reinforcing structure includes a reinforcing material and an adhesive layer. The reinforcing material is attached to the perforated hole to suppress deformation of the flexible printed circuit board or the light guide plate. The hardness of the reinforcing material is greater than that of polyethylene terephthalate (PET), and the reinforcing material is made of polyimide (PI) or metal. There is an overlapping area between the reinforcing material and the reflective sheet, and the coverage distance of the overlapping area is greater than zero. The reinforcing structure is configured such that the reinforcing material covers the entire perforated hole, and the adhesive layer completely covers the corresponding attachment point of the light strip. Using polyimide (PI) as the reinforcing material and configuring the reinforcing material to cover the entire perforated hole can prevent light leakage from the display module while suppressing structural deformation. Attached Figure Description

[0016] The nature of this disclosure can be best understood by reading it in conjunction with the accompanying drawings and the embodiments described below. Note that, in accordance with standard industry practice, the various features are not drawn to scale. In fact, the dimensions of the various features may be increased or decreased arbitrarily for clarity of explanation.

[0017] Figure 1A A 3D diagram of a known display module used to prevent light leakage is shown.

[0018] Figure 1B Illustration as follows Figure 1A Side view of the display module.

[0019] Figure 2A A perspective view of a display module for preventing light leakage according to an embodiment of the present disclosure is shown.

[0020] Figure 2B Illustration as follows Figure 2A Side view of the display module.

[0021] Figure 3A A perspective view of a display module for preventing light leakage according to another embodiment of this disclosure is shown.

[0022] Figure 3B Illustration as follows Figure 3A Side view of the display module.

[0023] Figure 4A A cross-sectional view of the original structure of a light bar according to an embodiment of this disclosure is shown.

[0024] Figure 4B A cross-sectional view of a light bar reinforced with a reinforcing material is shown according to an embodiment of this disclosure.

[0025] Figure 4C Illustration as follows Figure 4B A top view showing the reinforcement material used to install the light strips.

[0026] Figure 4D Illustration as follows Figure 4B A three-dimensional diagram showing the reinforcement material for the light strip.

[0027] In the attached figures, the following labels are used:

[0028] 10,400,400': Reinforcing structure

[0029] 11,410,430: Reinforcing materials

[0030] 12,420: Adhesive layer

[0031] 100: Iron bracket

[0032] 200: Light guide plate

[0033] 300: LED strip

[0034] 310: Light Emitting Diode

[0035] 320: Flexible Printed Circuit Board

[0036] 330: Reflector Detailed Implementation

[0037] The following disclosure provides numerous different implementations, or examples, for carrying out various features of the provided object. Specific examples of elements and arrangements are described below to simplify this disclosure. These examples are, of course, merely illustrative and not intended to be limiting. Furthermore, element symbols and / or letters may be repeated in various examples. This repetition is for simplicity and clarity and does not in itself specify a relationship between the various implementations and / or configurations discussed.

[0038] Spatial relative terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for descriptive purposes to describe the relationship between one element or feature and another, as shown in the accompanying drawings. Spatial relative terms are intended to cover different orientations of the device in use or operation other than those shown in the accompanying drawings. The device may be oriented in other ways (rotated 90 degrees or otherwise), and the spatial relative descriptors used herein shall be interpreted accordingly.

[0039] Figure 2A A perspective view of a display module for preventing light leakage according to an embodiment of the present disclosure is shown. In this embodiment, the display module for preventing light leakage includes a metal support 100 with a perforated hole, a light guide plate 200, a light strip 300 disposed on the side of the light guide plate 200, the light strip 300 including a plurality of light-emitting diodes 310, a flexible printed circuit board 320, and a reflective sheet 330, and a reinforcing structure 400 disposed in the perforated hole of the metal support 100. According to one embodiment, the reinforcing structure 400 covers the flexible printed circuit board 320 and the reflective sheet 330 of the light strip 300.

[0040] Figure 2B Illustration as follows Figure 2A A side view of the display module. According to one embodiment, the reinforcing structure 400 includes a reinforcing material 410 and an adhesive layer 420. According to some embodiments, the reinforcing material 410 may be polyimide (PI) with a hardness greater than polyethylene terephthalate (PET), its thickness is three times the thickness of the adhesive layer 420, and less than or equal to the thickness of the metal bracket 100, and its length and width are less than or equal to the length and width of the cutout in the metal bracket 100. According to some embodiments, the width of the adhesive layer 420 is less than or equal to the width of the light strip 300, and it is disposed between the flexible printed circuit board 320 and the reinforcing material 410. According to some embodiments, the reinforcing structure 400 is configured such that the reinforcing material 410 covers the entire cutout, thus there is an overlapping area between the reinforcing material 410 and the reflector 330, and the coverage distance of the overlapping area is greater than zero, while the adhesive layer 420 completely covers the corresponding attachment point of the flexible printed circuit board 320 of the light strip 300.

[0041] Figure 3AA perspective view of a display module for preventing light leakage according to another embodiment of this disclosure is shown. Figure 3B Illustration as follows Figure 3A A side view of the display module. In this embodiment, the reinforcing structure 400' only covers the flexible printed circuit board 320 of the light strip 300. According to some embodiments, the reinforcing material 430 can be an iron sheet with a hardness greater than polyethylene terephthalate (PET). According to some embodiments, the reinforcing material 430 does not cover the entire perforated hole, its width is the same as the adhesive layer 420, and it does not overlap with the reflective sheet 330.

[0042] Back Figure 2B and Figure 3B The only difference between the two is the width and material selection of the reinforcing material. Reinforcing material 410 can be polyimide (PI), while reinforcing material 430 can be iron sheet or other metal materials. Both materials are harder than the existing polyethylene terephthalate (PET) material to suppress the deformation of the flexible printed circuit board 320 or the light guide plate 200. Since polyimide (PI) is relatively soft compared to metal, it needs to completely cover the perforations to effectively suppress the deformation of the flexible printed circuit board or the light guide plate. Therefore, the width of reinforcing material 410 is relatively large, covering the entire perforation of the iron support 100 and overlapping with the reflector 330. Conversely, the width of the harder metal reinforcing material 430 can be smaller, the same as the width of the adhesive layer 420, and only covering the flexible printed circuit board 320.

[0043] Figure 4A A cross-sectional view of the original structure of a light strip according to one embodiment of the present disclosure is shown. Specifically, the structure of the light strip before the reinforcement structure 400 is provided is shown. According to one embodiment, the light strip includes a flexible printed circuit board 320 and a plurality of light-emitting diodes 310 disposed on the flexible printed circuit board 320.

[0044] Figures 4B to 4D Cross-sectional, top, and perspective views of a light strip with reinforcing material according to one embodiment of the present disclosure are shown. Specifically, the structure of the light strip after the reinforcing structure 400 is provided is shown. In this embodiment, the reinforcing structure 400 and the light strip are integrated into a single design. According to one embodiment, the light strip includes a flexible printed circuit board 320 and a plurality of light-emitting diodes 310 disposed on one side of the flexible printed circuit board 320. According to one embodiment, the reinforcing material 410 is disposed below the flexible printed circuit board 320, and its width is greater than the width of one light-emitting diode 310, and its length is greater than the width of the flexible printed circuit board 320. According to one embodiment, the reinforcing material 410 extends from the side of the flexible printed circuit board 320 near the light-emitting diodes 310 to the other side of the flexible printed circuit board 320 and covers a width exceeding that of the flexible printed circuit board 320.

[0045] Back Figure 2B and Figure 4D According to one embodiment, the reinforcing material 410 is attached above the flexible printed circuit board 320 and extends beyond the width of the flexible printed circuit board 320. Specifically, Figure 2B The diagram shows that the reinforcing material 410 covers the entire hollowed-out hole of the iron support 100 and overlaps with the reflector 330. Figure 4D The reinforcing material 410 extends from the flexible printed circuit board 320 beyond its width. This complete coverage configuration prevents light leakage and, based on the high rigidity of polyimide (PI), prevents deformation of the display module's structural components.

[0046] In summary, the display module disclosed herein for preventing light leakage includes a metal bracket with a perforated hole, a light guide plate, a light strip disposed on the side of the light guide plate, a flexible printed circuit board and multiple light-emitting diodes, and a reinforcing structure disposed in the perforated hole of the metal bracket. The reinforcing structure includes a reinforcing material and an adhesive layer. The reinforcing material is attached to the perforated hole to suppress deformation of the flexible printed circuit board or the light guide plate. The hardness of the reinforcing material is greater than that of polyethylene terephthalate (PET), and the reinforcing material is made of polyimide (PI) or metal. There is an overlapping area between the reinforcing material and the reflective sheet, and the coverage distance of the overlapping area is greater than zero. The reinforcing structure is configured such that the reinforcing material covers the entire perforated hole, and the adhesive layer completely covers the corresponding attachment point of the light strip. Using polyimide (PI) as the reinforcing material and configuring the reinforcing material to cover the entire perforated hole can prevent light leakage from the display module while suppressing structural deformation.

Claims

1. A display module for preventing light leakage, characterized in that, Include: Iron support frame with hollowed-out holes; Light guide plate; The light strip is disposed on the side of the light guide plate and includes a flexible printed circuit board and multiple light-emitting diodes; as well as A reinforcing structure is provided in the hollowed-out hole of the iron bracket, wherein the reinforcing structure includes a reinforcing material and an adhesive layer, and the reinforcing material is attached to the hollowed-out hole to suppress the deformation of the flexible printed circuit board or the light guide plate.

2. The display module as described in claim 1, characterized in that, The hardness of the reinforcing material is greater than that of polyethylene terephthalate, and the reinforcing material is made of polyimide or metal.

3. The display module as described in claim 1, characterized in that, The reinforcing material is made of metal.

4. The display module as described in claim 1, characterized in that, The thickness of the reinforcing material is three times the thickness of the adhesive layer.

5. The display module as described in claim 1, characterized in that, The length and width of the reinforcing material are less than or equal to the length and width of the hollowed-out hole in the iron bracket.

6. The display module as described in claim 1, characterized in that, The thickness of the reinforcing material is less than or equal to the thickness of the iron bracket.

7. The display module as described in claim 1, characterized in that, The light strip has a reflective sheet, and the reinforcing material and the reflective sheet have an overlapping area, and the coverage distance of the overlapping area is greater than zero.

8. The display module as described in claim 1, characterized in that, The width of the adhesive layer is less than or equal to the width of the light strip.

9. The display module as claimed in claim 1, characterized in that, The reinforcement structure is configured such that the reinforcement material covers the entire hollowed-out hole, and the adhesive layer completely covers the corresponding attachment point of the light strip.

10. The display module as claimed in claim 1, characterized in that, The reinforcing material and the adhesive layer are fabricated simultaneously on the flexible printed circuit board, so that the reinforcing structure and the light strip form an integrated design.

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