Fully-laminated front light source light guide plate structure

Abstract

The utility model discloses a fully-laminated front light source light guide plate structure, which relates to the technical field of electronic display and comprises a light guide plate, an upper surface OCA (optical clear adhesive), a lower surface OCA, a light bar, an upper surface protective film and a lower surface protective film, the upper surface OCA is laminated on the upper surface of the light guide plate, and the lower surface OCA is laminated on the lower surface of the light guide plate. The lower surface OCA optical cement is attached to the lower surface of the light guide plate, attachment is completed before the light guide plate is attached to the electronic ink screen and the cover plate, the OCA optical cement is attached to the front face and the back face of the light guide plate before the light guide plate is attached to the electronic ink screen and the cover plate, defoaming and appearance inspection are carried out, and therefore defective products attached to the light guide plate can be detected in advance; according to the invention, defects caused by subsequent full lamination are obviously reduced, so that the yield of the whole production process is improved, the full lamination of the OCA and the arrangement of the protective film effectively protect the light guide plate from being scratched and polluted by dust, the stable performance of the light guide plate is ensured, and the quality and the reliability of a final product are improved.

Description

Technical Field

[0001] This utility model relates to the field of electronic display technology, and in particular to a fully laminated front light source light guide plate structure. Background Technology

[0002] In today's electronic device industry, especially in products such as e-readers and office notebook tablets, e-ink screens are widely used due to their significant advantages such as low power consumption and eye protection. However, because e-ink screens are a type of total internal reflection display, they require a front light source to provide sufficient light in low-light environments to achieve a clear display effect.

[0003] Under current technological conditions, the front light source guide plate faces a series of serious problems during the full lamination process with e-ink screens, cover plates, or capacitive screens. On the one hand, traditional lamination processes are cumbersome and complex, requiring multiple lamination, coating, and inspection steps. This not only significantly extends the production cycle but also substantially increases costs in terms of manpower and materials. More importantly, such a complex process makes it difficult to improve production yield, resulting in a large number of products being scrapped due to poor lamination, causing serious waste of resources.

[0004] On the other hand, the light guide plate of the front light source is mostly made of PC material, which is easily scratched during production and operation due to the inherent characteristics of this material. Once a defect occurs in the full lamination process, the feasibility of reusing PC material is extremely low due to its special properties, which undoubtedly further increases production costs.

[0005] Furthermore, existing bonding methods lack effective protection and pre-inspection measures during the bonding process between the light guide plate and other components. This makes it easy for foreign objects to get mixed in during the bonding process, or for problems such as loose or uneven bonding to occur, seriously affecting the display quality and overall performance of the final product.

[0006] In summary, to improve production efficiency, reduce costs, and enhance product quality and reliability, developing a novel fully laminated front light guide plate structure and its corresponding lamination process has become an urgent priority. This new structure and process are expected to solve many current problems and bring beneficial effects such as improved production yield, enhanced product protection performance, and optimized display effects. In specific implementations, through carefully designed lamination processes and structural components, such as laminating OCA optical adhesive to both sides of the light guide plate before lamination, setting a protective film to prevent mismixing, performing debubbling, and conducting rigorous visual inspections, more efficient and higher-quality fully laminated production can be achieved. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a fully laminated front light source guide plate structure, which solves the technical problem of low production yield caused by the complex full lamination process of existing front light source guide plates.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A fully laminated front light source light guide plate structure includes a light guide plate, an upper surface OCA optical adhesive, a lower surface OCA optical adhesive, a light strip, an upper surface protective film, and a lower surface protective film;

[0010] The upper surface OCA optical adhesive is bonded to the upper surface of the light guide plate, and the lower surface OCA optical adhesive is bonded to the lower surface of the light guide plate, and the bonding is completed before the light guide plate is bonded to the electronic ink screen and the cover plate.

[0011] The light strip is located on one side of the light guide plate, the upper surface protective film covers the upper surface OCA optical adhesive, and the lower surface protective film covers the lower surface OCA optical adhesive.

[0012] Preferably, the microstructure of the adhesive surface of the light guide plate and the dot matrix of the light guide plate are located on the same surface.

[0013] Preferably, the protective film of the upper and lower OCA optical adhesive has an anti-mismixing structure to distinguish the upper and lower surfaces of the light guide plate.

[0014] Preferred method: After the light guide plate is bonded to the upper and lower OCA optical adhesive surfaces, a degassing treatment is performed, and the bonded light guide plate is then visually inspected.

[0015] Preferred configuration: The front light source mainly consists of a light guide plate and a light strip. The front light source is fully laminated to the e-ink screen, cover plate or touch screen through the upper surface OCA optical adhesive and the lower surface OCA optical adhesive to form a complete front light source e-ink screen finished product.

[0016] Preferably, the light guide plate, the upper surface OCA optical adhesive, the lower surface OCA optical adhesive, the light strip, the electronic ink screen, the cover plate, and the touch screen are sequentially bonded and connected.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By first bonding OCA optical adhesive to the front and back sides of the light guide plate before bonding it to the electronic ink screen and cover plate, and then performing debubbling and visual inspection, defective light guide plate bonding products can be detected in advance, significantly reducing defects generated during subsequent full bonding, thereby improving the yield of the entire production process.

[0019] 2. The full lamination of OCA optical adhesive and the setting of the protective film effectively protect the light guide plate from scratches and dust contamination, ensuring the stable performance of the light guide plate, thereby improving the quality and reliability of the final product. The optimized light guide structure can provide a more uniform and brighter light source, providing better display effects for e-ink screens and enhancing user experience. The clear structural design and lamination steps make the production process more standardized and regulated, reducing the complexity of the process and facilitating worker operation and quality control. Attached Figure Description

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is an overall structural diagram of the present invention.

[0022] Illustration: 1. Light guide plate; 2. Upper surface OCA optical adhesive; 3. Lower surface OCA optical adhesive; 4. Light strip; 5. Upper surface protective film; 6. Lower surface protective film. Detailed Implementation

[0023] This application provides a fully laminated front light source light guide plate structure, which effectively solves the technical problem of low production yield caused by the complex full lamination process of existing front light source light guide plates.

[0024] Example

[0025] The overall technical solution in this application is as follows:

[0026] To address the problems existing in the prior art, this utility model provides a fully laminated front light guide plate structure. This fully laminated front light guide plate structure includes a light guide plate 1, an upper surface OCA optical adhesive 2, a lower surface OCA optical adhesive 3, a light strip 4, an upper surface protective film 5, and a lower surface protective film 6. The upper surface OCA optical adhesive 2 is laminated to the upper surface of the light guide plate 1, and the lower surface OCA optical adhesive 3 is laminated to the lower surface of the light guide plate 1. The lamination is completed before the light guide plate 1 is laminated to the electronic ink screen and the cover plate. The light strip 4 is located on one side of the light guide plate 1. The upper surface protective film 5 covers the upper surface OCA optical adhesive 2, and the lower surface protective film 6 covers the lower surface OCA optical adhesive 3.

[0027] The microstructure and dot matrix of the adhesive surface of the light guide plate 1 are located on the same surface. The protective film of the upper OCA optical adhesive 2 and the lower OCA optical adhesive 3 has an anti-mismixing structure. After the light guide plate 1 is bonded to the upper OCA optical adhesive 2 and the lower OCA optical adhesive 3, it undergoes a debubbling treatment. The front light source mainly consists of the light guide plate 1 and the lamp strip 4. The front light source is fully bonded to the e-ink screen, cover plate, or touch screen through the upper OCA optical adhesive 2 and the lower OCA optical adhesive 3. The light guide plate 1, the upper OCA optical adhesive 2, the lower OCA optical adhesive 3, the lamp strip 4, the e-ink screen, the cover plate, and the touch screen are sequentially bonded and connected, wherein:

[0028] Light guide plate 1: Made of PC material, it has good light guiding performance and a certain strength;

[0029] Upper surface OCA optical adhesive 2 and lower surface OCA optical adhesive 3: High transparency and moderate viscosity OCA optical adhesive are selected to ensure tight bonding with light guide plate 1 and subsequent bonding components;

[0030] LED strip 4: Composed of multiple LEDs, providing a uniform light source;

[0031] Upper surface protective film 5 and lower surface protective film 6: made of wear-resistant and dustproof protective film material.

[0032] Operating principle:

[0033] First, the upper and lower surfaces of the light guide plate 1 are cleaned to remove dust and impurities, ensuring that the OCA optical adhesive can adhere well.

[0034] The upper OCA optical adhesive 2 and the lower OCA optical adhesive 3 are respectively bonded to the upper and lower surfaces of the light guide plate 1. During the bonding process, care should be taken to avoid the formation of air bubbles and to ensure that the OCA optical adhesive evenly covers the surface of the light guide plate 1.

[0035] After bonding is complete, a degassing process is performed. Specialized degassing equipment can be used to remove the air bubbles generated during the bonding process under certain temperature and pressure conditions.

[0036] After degassing, the bonded light guide plate 1 is visually inspected. Carefully check for any foreign objects, unexpelled air bubbles, uneven OCA optical adhesive, or other defects.

[0037] After passing the inspection, install the light strip 4 on one side of the light guide plate 1, ensuring that the position of the light strip 4 and the light guide plate 1 is accurate.

[0038] Finally, the light guide plate 1 is fully bonded to the e-ink screen, cover plate or touch screen by using the upper surface OCA optical adhesive 2 and the lower surface OCA optical adhesive 3 to form a complete front light source e-ink screen product.

[0039] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A fully laminated front light source light guide plate structure, characterized in that, The fully laminated front light source light guide plate structure includes a light guide plate (1), an upper surface OCA optical adhesive (2), a lower surface OCA optical adhesive (3), a light strip (4), an upper surface protective film (5), and a lower surface protective film (6); The upper surface OCA optical adhesive (2) is bonded to the upper surface of the light guide plate (1), and the lower surface OCA optical adhesive (3) is bonded to the lower surface of the light guide plate (1), and the bonding is completed before the light guide plate (1) is bonded to the electronic ink screen and the cover plate. The light strip (4) is located on one side of the light guide plate (1), the upper surface protective film (5) covers the upper surface OCA optical adhesive (2), and the lower surface protective film (6) covers the lower surface OCA optical adhesive (3).

2. The fully laminated front light source guide plate structure as described in claim 1, characterized in that: The microstructure of the adhesive surface of the light guide plate (1) and the dot matrix of the light guide plate are located on the same surface.

3. The fully laminated front light guide plate structure as described in claim 1, characterized in that: The protective film of the upper surface OCA optical adhesive (2) and the lower surface OCA optical adhesive (3) has an anti-mismixing structure.

4. The fully laminated front light source guide plate structure as described in claim 1, characterized in that: After the light guide plate (1) is bonded to the upper surface OCA optical adhesive (2) and the lower surface OCA optical adhesive (3), it undergoes degassing treatment.

5. The fully laminated front light guide plate structure as described in claim 1, characterized in that: The front light source is mainly composed of a light guide plate (1) and a light strip (4). The front light source is fully bonded to the electronic ink screen, cover plate or touch screen through the upper surface OCA optical adhesive (2) and the lower surface OCA optical adhesive (3).

6. The fully laminated front light source guide plate structure as described in claim 1, characterized in that: The light guide plate (1), the upper surface OCA optical adhesive (2), the lower surface OCA optical adhesive (3), the light strip (4), the electronic ink screen, the cover plate, and the touch screen are sequentially bonded and connected.

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