Cover plate and display device

Abstract

The utility model provides a cover plate and display device wherein the cover plate comprises a transparent substrate and an OCA layer, the transparent substrate comprises a first surface and a second surface which are arranged back to back, the OCA layer is arranged on the first surface or the second surface relative to the transparent substrate, and the OCA layer is arranged on the first surface or the second surface relative to the transparent substrate. One surface of the OCA layer is coated with a black coloring agent in the circumferential direction to form a black frame area, and a transparent window area is formed in the part, located in the black frame area, of the surface. According to the utility model, the problems of complex processing technology, high reject ratio and high maintenance and production cost in the manufacturing process of the frame area of the liquid crystal screen cover plate in the ink printing technology in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a cover plate and a display device. Background Art

[0002] The LCD cover structure plays a crucial role in the manufacturing process of liquid crystal display panels. Traditional LCD cover plates typically consist of a transparent substrate and an optical fiber adhesive (OCA) layer. To create a black border, the traditional method involves printing black ink along the circumference of one side of the transparent substrate. However, this traditional ink printing process presents numerous problems and challenges.

[0003] like Figure 1-2 FIG. 1 shows the basic structure of a conventional cover plate, which mainly includes a transparent substrate 1' and an OCA layer 2'. In the conventional art, a black border region 11' is formed by printing black ink, and the portion of the transparent substrate 1' located within the black border region 11' is a transparent window region 12'.

[0004] The cover plate design in the prior art mainly has the following problems:

[0005] First, the complexity of the ink printing process poses significant challenges to production. Typically, two layers of black ink are required, and the thickness of each layer must be precisely controlled within a certain range. This not only increases the complexity of the production process but also places extremely high demands on the precision of the printing technology. Mistakes in any step can result in a defective product.

[0006] Secondly, the ink printing process is prone to various manufacturing defects, such as uneven ink distribution and blurred edges. These problems directly affect product quality and yield, resulting in significant financial losses for the company. Furthermore, the production of defective products increases the cost and difficulty of subsequent processing.

[0007] Furthermore, printing ink directly onto transparent substrates carries certain risks. During subsequent processing or rework, the surface of the transparent substrate could be scratched, resulting in product failure. This not only further reduces yield but also increases production costs.

[0008] In summary, the traditional ink printing process has problems such as complex processing technology, defective rate, high maintenance and high production cost in the manufacturing process of the border area of the LCD cover plate. Utility Model Content

[0009] The purpose of the present invention is to provide a cover plate and a display device to solve the problems of the prior art ink printing process in the manufacturing process of the frame area of the liquid crystal cover plate, such as complex processing technology, high defect rate, high maintenance and production costs.

[0010] In order to achieve the above-mentioned purpose of the present invention, one embodiment of the present invention provides a cover plate, which includes a transparent substrate and an OCA layer, the transparent substrate includes a first surface and a second surface arranged back to back, the OCA layer is arranged on the first surface or the second surface relative to the transparent substrate, one side of the OCA layer is coated with a black dye along its circumference to form a black border area, and the portion of the surface located within the black border area forms a transparent window area.

[0011] As a further improvement of the embodiment of the present invention, the black dye is coated on the side of the OCA layer facing away from the transparent substrate.

[0012] As a further improvement of the embodiment of the present invention, the basic component of the black dye is black masterbatch pigment.

[0013] As a further improvement of the embodiment of the present invention, the thickness of the OCA layer is 100um to 200um.

[0014] As a further improvement of the embodiment of the present invention, the thickness of the black border area is 10um to 20um.

[0015] As a further improvement of the embodiment of the present invention, the thickness of the transparent substrate is 0.6 to 1.0 mm.

[0016] As a further improvement of the embodiment of the present invention, the transparent substrate is configured as a quadrilateral, and the four vertices of the quadrilateral are provided with arc-shaped chamfers.

[0017] As a further improvement of the embodiment of the present utility model, the arc radius of the arc chamfer is 5 mm.

[0018] As a further improvement of the embodiment of the present utility model, the transparent substrate is configured as a glass structure.

[0019] An embodiment of the present invention further provides a display device, comprising the cover plate as described above, and a panel layer arranged opposite to the cover plate, wherein the cover plate and the panel layer are arranged to overlap, wherein the OCA layer is located between the panel layer and the transparent substrate.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] When printing black dye onto the OCA layer, since the OCA layer is easy to color, usually only one layer of black dye is required, which simplifies the printing process. In addition, when poor printing occurs and the layer needs to be scrapped, the cost of the OCA layer is much lower than that of the transparent substrate, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a cover plate in the prior art;

[0023] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0024] Figure 3 A schematic structural diagram of a cover plate provided in one embodiment of the present utility model;

[0025] Figure 4 for Figure 3 Schematic diagram of the explosion structure.

[0026] The above description of the drawings includes the following reference numerals:

[0027] 1', transparent substrate;

[0028] 11', black border area;

[0029] 12', transparent window area;

[0030] 2', OCA layer;

[0031] 1. Transparent substrate;

[0032] 2. OCA layer;

[0033] 21. Black border area;

[0034] 22. Transparent window area. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0037] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0038] In order to solve the problems of complicated processing, high defect rate, high maintenance and production costs in the prior art ink printing process in the manufacturing process of the border area of the LCD cover plate, an embodiment of the present invention provides a cover plate and a display device.

[0039] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0040] like Figure 3-4 As shown, one embodiment of the present invention provides a cover plate, which includes: a transparent substrate 1 and an OCA layer 2, wherein the transparent substrate 1 includes a first surface and a second surface arranged back to back, and the OCA layer 2 is arranged on the first surface or the second surface relative to the transparent substrate 1, and one side of the OCA layer 2 is coated with a black dye along its circumference to form a black border area 21, and the portion of the surface located within the black border area forms a transparent window area 22.

[0041] In this embodiment, the OCA layer generally refers to an Optical Clear Adhesive layer, which is a colorless, transparent, and highly transmittant special double-sided adhesive tape layer. OCA is a type of pressure-sensitive adhesive with excellent bonding strength and low shrinkage upon curing.

[0042] Through the above-mentioned arrangement, when printing the black dye onto the OCA layer, since the OCA layer is easy to color, usually only one layer of black dye needs to be printed, thereby simplifying the printing process; in addition, when poor printing occurs and needs to be scrapped, the cost of the OCA layer is much lower than the cost of the transparent substrate, thereby reducing production costs.

[0043] In this embodiment, the transparent substrate is generally a transparent glass structure substrate.

[0044] Preferably, in this embodiment, the OCA layer 2 and the transparent substrate 1 have substantially the same shape and size, so that the two can be better bonded together.

[0045] Furthermore, the black dye is evenly and finely coated on the surface of the OCA layer 2 facing the external environment, that is, the surface facing away from the transparent substrate 1. This coating method ensures that the border area can present a uniform black appearance, while also helping to optimize the overall manufacturing process and further reduce the production of defective products.

[0046] In this embodiment, the black dye is primarily composed of a carefully formulated black masterbatch pigment. This pigment has excellent color stability and hiding power, ensuring a uniform and durable color in the border area, thus meeting the high visual quality requirements of the cover.

[0047] Furthermore, in order to balance the bonding strength and light transmittance, the thickness of the OCA layer is preferably between 100 and 200 μm. This thickness range not only ensures a good visual effect but also effectively prevents the refraction phenomenon caused by excessive thickness.

[0048] Furthermore, the thickness of the black border area 21 is precisely controlled to be between 10um and 20um. This range ensures that the border has sufficient visual shielding effect, but is not too thick to affect the overall lightness and light transmission performance of the product, while meeting the requirements of fine craftsmanship.

[0049] Preferably, the thickness of the transparent substrate 1 is carefully designed and controlled within the range of 0.6 to 1.0 mm, ensuring that both the structural strength requirements are met and the balance between lightweight and optical performance is taken into account, which is a key link in optimizing the performance of the cover.

[0050] In this example, the transparent substrate 1 is designed as a standard quadrilateral structure, and its four vertices are all integrated with arc-shaped chamfers, which not only improves the aesthetics, but also effectively prevents edge scratches, thereby enhancing the durability and safety of the product.

[0051] Preferably, reference Figure 4 As shown, the arc radius of the arc chamfer is designed to be 5mm, that is, Figure 4 The center radius R is 5 mm.

[0052] With this arrangement, when the cover is mounted on the liquid crystal screen film, this size not only ensures a smooth transition and aesthetics between the transparent substrate 1 and the screen, but also enhances the mechanical strength of the transparent substrate 1 and improves the product's ability to resist external impacts.

[0053] An embodiment of the present invention further provides a display device, which includes the cover plate as described above and a panel layer arranged opposite to the cover plate, wherein the cover plate and the panel layer are arranged to overlap, wherein the OCA layer 2 is located between the panel layer and the transparent substrate 1.

[0054] It should be noted that the OCA layer 2 is cleverly placed between the panel layer and the transparent substrate 1, which not only simplifies the manufacturing process, but also improves the yield rate, ensuring excellent display effects and product reliability.

[0055] In summary, the embodiments of the present invention achieve the following technical effects:

[0056] 1) When printing the black dye onto the OCA layer, since the OCA layer is easily colored, usually only one layer of black dye is required, thereby simplifying the printing process;

[0057] 2) When printing defects occur and the product needs to be scrapped, the cost of the OCA layer is much lower than that of the transparent substrate, thereby reducing production costs.

[0058] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0060] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cover plate, characterized in that: The invention comprises a transparent substrate and an OCA layer, wherein the transparent substrate comprises a first surface and a second surface arranged back to back, and the OCA layer is arranged on the first surface or the second surface relative to the transparent substrate, and one side of the OCA layer is coated with a black dye along its circumference to form a black border area, and the portion of the surface located within the black border area forms a transparent window area.

2. The cover plate according to claim 1, wherein: The black dye is coated on the side of the OCA layer facing away from the transparent substrate.

3. The cover plate according to claim 1, wherein: The basic component of the black dye is black masterbatch pigment.

4. The cover plate according to claim 1, wherein: The thickness of the OCA layer is 100um to 200um.

5. The cover plate according to claim 1, wherein: The thickness of the black border area is 10um to 20um.

6. The cover plate according to claim 1, wherein: The thickness of the transparent substrate is 0.6-1.0 mm.

7. The cover plate according to claim 1, wherein: The transparent substrate is arranged in a quadrilateral, and the four vertices of the quadrilateral are provided with arc-shaped chamfers.

8. The cover plate according to claim 7, wherein: The arc radius of the arc chamfer is 5 mm.

9. The cover plate according to claim 1, wherein: The transparent substrate is configured as a glass structure.

10. A display device, characterized in that: include: The cover plate according to any one of claims 1 to 9, and a panel layer arranged opposite to the cover plate, the cover plate and the panel layer are arranged to overlap, wherein the OCA layer is located between the panel layer and the transparent substrate.

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