Glass light guide plate with full-laminated OCA adhesive film

Abstract

The application provides a glass light guide plate with full-laminated OCA adhesive film, which comprises a glass light guide plate base layer, a dot layer, an OCA adhesive film layer and a reflective film; the dot layer is arranged between the glass light guide plate base layer and the OCA adhesive film layer; the OCA adhesive film layer is sequentially stacked with a first OCA adhesive layer, a second OCA adhesive layer and a third OCA adhesive layer from the glass light guide plate base layer to one side of the reflective film; the refractive index of the first OCA adhesive layer is set to 1.6-1.7, the refractive index of the second OCA adhesive layer is set to 1.5-1.6, and the refractive index of the third OCA adhesive layer is set to 1.3-1.4. Through the full-laminated OCA adhesive film, the light guide plate and the reflective film can be fully laminated without affecting the overall display effect.

Description

Technical Field

[0001] This invention relates to the field of glass light guide plate technology, and more particularly to a glass light guide plate with a fully laminated OCA adhesive film. Background Technology

[0002] In the light guide plate industry, full lamination technology eliminates the air gap between screens, significantly reducing light reflection and light loss, thereby improving brightness and enhancing screen display. In conventional LCD (liquid crystal display) edge-lit modules, the light guide plate and reflective film are not bonded together, leaving an air gap. The reflective film is relatively thick, and the light guide plate itself is also thick, resulting in a relatively thick overall device. Existing technologies use a single layer of adhesive, but the edge-lit light from LEDs cannot be totally reflected through the dot matrix, causing low uniformity of the overall light guide plate. Bright edges appear near the LED strips, while light further away from the LED strips cannot escape. This situation makes it unsuitable for high-end ultra-thin display products, and therefore urgently needs improvement. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to provide a glass light guide plate with a fully laminated OCA film. By setting the fully laminated OCA film, the light guide plate and the reflective film can be fully laminated without affecting the overall display effect.

[0004] This invention provides a glass light guide plate with a fully laminated OCA adhesive film, comprising a glass light guide plate base layer, a dot layer, an OCA adhesive film layer, and a reflective film; the dot layer is correspondingly disposed between the glass light guide plate base layer and the OCA adhesive film layer; the OCA adhesive film layer is provided with a first OCA adhesive layer, a second OCA adhesive layer, and a third OCA adhesive layer stacked sequentially from the glass light guide plate base layer to one side of the reflective film; the refractive index of the first OCA adhesive layer is set to 1.6-1.7, the refractive index of the second OCA adhesive layer is set to 1.5-1.6, and the refractive index of the third OCA adhesive layer is set to 1.3-1.4.

[0005] Furthermore, the thickness of the first OCA adhesive layer is set to 10μm-20μm.

[0006] Furthermore, the thickness of the second OCA adhesive layer is set to 30μm-50μm.

[0007] Furthermore, the thickness of the third OCA adhesive layer is set to 10μm-20μm.

[0008] Furthermore, a decorative film layer is provided on the side of the reflective film away from the OCA adhesive film layer; the thickness of the decorative film layer is set to 200μm-500μm; the decorative film layer is set to any one of glossy silver, matte silver, black, and brushed black.

[0009] Furthermore, the sum of the thicknesses of the glass light guide plate base layer, dot layer, OCA film layer, reflective film, and decorative film layer is set to 1.45mm-3mm.

[0010] The beneficial effects of this invention are as follows:

[0011] 1. The OCA adhesive film layer has strong adhesion to both the light guide plate and the reflective film, and can be used for a long time in high temperature and high humidity environments without delamination and yellowing resistance.

[0012] 2. The use of OCA adhesive film layer enables full lamination, thereby improving the overall strength of the light guide plate and increasing the assembly yield.

[0013] 3. This invention effectively avoids the risk of warping of the reflective film when the heat dissipation of the machine is poor;

[0014] 4. The entire metal backplate can be eliminated, and a decorative film layer is set on the side of the reflective film away from the OCA adhesive film layer, which can realize the appearance design and greatly reduce the product cost. Attached Figure Description

[0015] Figure 1 This is a front view of the first embodiment.

[0016] Figure 2 This is a schematic diagram of the light path refraction in the first embodiment.

[0017] Figure 3 This is a front view of the second embodiment.

[0018] The attached figures are labeled as follows: glass light guide plate base layer 10, OCA adhesive film layer 11, reflective film 12, first OCA adhesive layer 13, second OCA adhesive layer 14, third OCA adhesive layer 15, dot layer 17, LED light source 16, and decorative film layer 18. Detailed Implementation

[0019] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] Please refer to Figure 1-2As shown, in the first embodiment, a glass light guide plate with a fully laminated OCA adhesive film includes a glass light guide plate base 10, a dot layer 17, an OCA adhesive film layer 11, and a reflective film 12; the dot layer 17 is correspondingly disposed between the glass light guide plate base 10 and the OCA adhesive film layer 11; the OCA adhesive film layer 11 is provided with a first OCA adhesive layer 13, a second OCA adhesive layer 14, and a third OCA adhesive layer 15 sequentially stacked from the glass light guide plate base 10 to one side of the reflective film 12, with OCA adhesive of different thicknesses being coated in multiple layers.

[0022] The refractive index of the first OCA adhesive layer 13 is set to 1.6-1.7, and the thickness is set to 10μm-20μm.

[0023] The refractive index of the second OCA adhesive layer 14 is set to 1.5-1.6, and the thickness is set to 30μm-50μm.

[0024] The refractive index of the third OCA adhesive layer 15 is set to 1.3-1.4. The thickness is set to 10μm-20μm.

[0025] This invention makes full use of light refraction. The first OCA adhesive layer 13 uses a high refractive index adhesive to concentrate the light leaking from and reflecting from the light guide plate as much as possible to the front of the light guide plate after reflection by the reflective film. The second OCA adhesive layer 14 uses a diffuser and high-transmittance adhesive to evenly distribute the LED light source 16 onto the light guide plate, avoiding the adhesive from sticking to the dots 17 and forming bright spots. Through the structural design of this invention, the overall light efficiency is 3-5% higher than that of a traditional simple diffuser sheet.

[0026] This invention can achieve an overall light emission uniformity of 65%-75% for the light guide plate, and the OCA adhesive film layer has strong adhesion to both the light guide plate and the reflective film. It can be used for a long time in high temperature and high humidity environments without delamination and is resistant to yellowing.

[0027] In the prior art, ultra-thin design models have very thin glass light guide plates, typically 1.1-1.5mm, while traditional MS light guide plates are basically 2.0-3.0mm. The thinness of the glass can cause the risk of breakage during assembly. However, this invention uses an OCA adhesive film layer to achieve full bonding, thereby improving the overall strength of the light guide plate and increasing the assembly yield.

[0028] This invention uses an OCA adhesive film layer to achieve full bonding, effectively avoiding the risk of wave warping of the reflective film when the heat dissipation of the machine is poor.

[0029] Please refer to Figure 3In the second embodiment, based on the first embodiment, a decorative film layer 18 is provided on the side of the reflective film 12 away from the OCA adhesive film layer 11; the thickness of the decorative film layer 18 is set to 200μm-500μm; the decorative film layer 18 is any one of glossy silver, matte silver, black, or brushed black. The sum of the thicknesses of the glass light guide plate base layer 10, the dot layer 17, the OCA adhesive film layer 11, the reflective film 12, and the decorative film layer 18 is set to 1.45mm-3mm. Using the OCA adhesive film layer to achieve full lamination eliminates the need for the entire metal backplate. Laminating the decorative film layer 18 to the back of the glass light guide plate enhances the product's appearance and significantly reduces product costs.

[0030] The above-described embodiments are merely two examples of implementation of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A glass light guide plate with a fully laminated OCA adhesive film, characterized in that, The system includes a glass light guide plate base layer (10), a dot layer (17), an OCA adhesive film layer (11), and a reflective film (12). The dot layer (17) is disposed between the glass light guide plate base layer (10) and the OCA adhesive film layer (11). The OCA adhesive film layer (11) is provided with a first OCA adhesive layer (13), a second OCA adhesive layer (14), and a third OCA adhesive layer (15) stacked sequentially from the glass light guide plate base layer (10) to one side of the reflective film (12). The refractive index of the first OCA adhesive layer (13) is set to 1.6-1.7, the refractive index of the second OCA adhesive layer (14) is set to 1.5-1.6, and the refractive index of the third OCA adhesive layer (15) is set to 1.3-1.

4. A decorative film layer (18) is provided on the side of the reflective film (12) away from the OCA adhesive film layer (11); the thickness of the decorative film layer (18) is set to 200μm-500μm; the decorative film layer (18) is set to any one of glossy silver, matte silver, black, or brushed black.

2. The glass light guide plate with fully laminated OCA adhesive film according to claim 1, characterized in that: The thickness of the first OCA adhesive layer (13) is set to 10μm-20μm.

3. A glass light guide plate with a fully laminated OCA adhesive film according to claim 1, characterized in that: The thickness of the second OCA adhesive layer (14) is set to 30μm-50μm.

4. A glass light guide plate with a fully laminated OCA adhesive film according to claim 1, characterized in that: The thickness of the third OCA adhesive layer (15) is set to 10μm-20μm.

5. A glass light guide plate with a fully laminated OCA adhesive film according to claim 4, characterized in that: The sum of the thicknesses of the glass light guide plate base layer (10), dot layer (17), OCA film layer (11), reflective film (12), and decorative film layer (18) is set to 1.45mm-3mm.

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