Display screen without silk-screen printing ink layer and display module

Abstract

The utility model relates to a display screen without a silk-screen printing ink layer, which comprises a cover plate, a splicing OCA layer and a film Sensor, the cover plate and the film Sensor are bonded through the splicing OCA layer, and the splicing OCA layer comprises a middle area and an edge area surrounding the middle area; the middle area is made of an OCA material and is used for corresponding to the position of a visual area of a display screen; the edge area adopts colored OCA (Optical Clear Adhesive) and is used for corresponding to the position of a shading area on the outer ring of a visual area of the display screen; the thickness of the edge area is equal to that of the middle area. According to the utility model, the problem that bubbles between the cover plate and the film sensor remain in a shading area at the edge of the cover plate during fitting due to height difference between a visual area and an ink layer at the edge of the visual area caused by silk-screen printing ink on the cover plate of a traditional display screen is solved. And moreover, the difficulty of fitting operation is reduced, and the product yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, in particular to a display screen and a display module without a screen printing ink layer. Background Art

[0002] As Figure 1 shown, when assembling the existing film display screen, first, an ink layer 3 is screen printed on the cover plate 1, and the area not covered by the ink layer 3 is the viewing area. Then, the film Sensor 2 with the OCA layer 4 is attached to the cover plate 1 with the ink layer 3. The problem with this structure is that the ink layer 3 has a certain thickness, resulting in a gap 5 between the viewing area of the cover plate 1 and the film Sensor 2 when they are attached. When attaching with a jig, the gas in the gap can be discharged from the middle to the periphery, but due to the height difference between the viewing area and the ink layer 3 around it, it is not easy to drive out the bubbles, and the bubbles remain in the ink area, causing bubble retention and affecting the product quality. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a display screen and a display module without a screen printing ink layer, aiming to prevent bubble residues from occurring in the light-shielding area at the edge of the cover plate and improve the product yield.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The utility model provides a display screen without a screen printing ink layer, including a cover plate, a spliced OCA layer, and a film Sensor. The cover plate and the film Sensor are bonded through the spliced OCA layer. The spliced OCA layer includes a middle area and an edge area surrounding the middle area;

[0006] The middle area is made of OCA material and is used to correspond to the viewing area position of the display screen;

[0007] The edge area is made of colored OCA and is used to correspond to the light-shielding area position outside the viewing area of the display screen;

[0008] The thickness of the edge area is equal to that of the middle area.

[0009] A further technical solution is:

[0010] The spliced OCA layer adheres to the entire surface of the cover plate.

[0011] The area of the film Sensor is equal to or smaller than the area of the cover plate.

[0012] The thickness of the spliced OCA layer is 20 - 50 μm.

[0013] The light transmittance of the edge area is 30% to 70%.

[0014] The middle area and the edge area of the spliced OCA layer are spliced into a whole.

[0015] The middle area and the edge area of the spliced OCA layer are integrally formed.

[0016] The color of the colored OCA is black or smoky gray.

[0017] The cover plate is a curved panel or a straight panel.

[0018] The present utility model also provides a display module, including the display screen without a screen printing ink layer as described above.

[0019] The beneficial effects of the present utility model are as follows:

[0020] The present utility model avoids the problem that in a traditional display screen, due to screen printing ink on the cover plate, there is a height difference between the viewing area and the ink layer at its edge, resulting in bubbles between the cover plate and the film sensor remaining in the light-shielding area at the edge of the cover plate during lamination. The present utility model uses a spliced OCA layer with a consistent thickness to laminate the cover plate and the film sensor. During the lamination process, there is no gap between the cover plate and the film sensor. Therefore, the cross-sectional area of the bubble discharge channel is relatively uniform, and it is not easy to have bubbles remaining in the edge area of the cover plate, improving the product yield. And compared with the traditional screen printing ink process, the operation is simpler in process, thinner in structure, and smoother in the lamination surface.

[0021] Since the present utility model does not require screen printing ink on the cover plate, there is no protruding ink layer step at the edge of the viewing area, which can reduce screen light leakage. The spliced OCA layer has the characteristics of being thin, soft, and flat, and can be perfectly attached to the cover plate. Therefore, the cover plate can be a curved panel or a straight panel, and is more suitable for constructing 2.5D screens and curved screen products, thus solving the problem that it is difficult to perform ink screen printing on a curved cover plate. In addition, due to the adhesive attachment characteristics of the spliced OCA layer, it can effectively prevent sputtering when the glass cover plate breaks.

[0022] The spliced OCA layer of the present utility model adheres to the entire cover plate. For some products where the area of the film sensor is smaller than the cover plate, the spliced OCA layer will extend beyond the film sensor. In this way, when installed in a machine, the adhesion between the cover plate and the machine shell can be greater, which is beneficial to improving the structural performance.

[0023] Other features and advantages of the present utility model will be described in the subsequent description or will be understood by implementing the present utility model. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the stacked structure of a film display screen in the prior art.

[0025] Figure 2Schematic diagram of the stacking structure of the display screen according to an embodiment of the present utility model.

[0026] Figure 3 Schematic diagram of the structure of the spliced OCA layer according to an embodiment of the present utility model.

[0027] In the figure: 1, cover plate; 2, film sensor; 3, ink layer; 4, OCA layer; 5, gap; 6, spliced OCA layer; 61, edge area; 62, middle area. Specific embodiments

[0028] The following describes the specific embodiments of the present utility model with reference to the accompanying drawings.

[0029] As Figure 2 and Figure 3 shown, the display screen without a screen-printed ink layer in this embodiment includes a cover plate 1, a spliced OCA layer 6, and a film sensor 2. The cover plate 1 and the film sensor 2 are adhered through the spliced OCA layer 6, that is, the cover plate 1, the spliced OCA layer 6, and the film sensor 2 are stacked in sequence; the spliced OCA layer 6 includes a middle area 62 and an edge area 61 surrounding the middle area 62; the middle area 62 is made of OCA material and is used to correspond to the viewing area position of the display screen; the edge area 61 is made of colored OCA and is used to correspond to the light-shielding area position outside the viewing area of the display screen; the thickness of the edge area 61 is equal to that of the middle area 62.

[0030] In this embodiment, a spliced OCA layer with a uniform thickness is used to adhere the cover plate and the film sensor. During the adhesion process, there is no gap between the cover plate and the film sensor. Therefore, the air bubbles are discharged more evenly, and it is not easy to have air bubble residues in the edge area of the cover plate.

[0031] In the middle area 62 of the spliced OCA layer 6 in this embodiment, ordinary OCA material is used, and in the edge area 61, colored OCA material is used, presenting a transparent effect and a light-shielding effect respectively. After the cover plate 1 and the film sensor 2 are adhered, the middle area 62 corresponds to the viewing area position of the screen, and the edge area 61 corresponds to the light-shielding area position, achieving a good light-shielding effect. Moreover, since there is no need to screen-print ink on the cover plate, there is no protruding ink layer step at the edge of the viewing area, which can reduce screen light leakage.

[0032] As a specific embodiment, the color of the colored OCA is black or smoky gray.

[0033] Among them, the colored OCA in the edge area 61 and the ordinary OCA in the middle area 62 can be formed separately and then spliced into a whole, or can also be integrally formed during preparation. The preparation of the colored OCA, the splicing or integral forming process between the colored OCA and the ordinary OCA can all be realized by using the existing mature OCA optical adhesive preparation process. For example, the colored OCA can be prepared by adding ink or toner to the OCA, and the specific process flow will not be elaborated here.

[0034] As a preferred embodiment, the thickness of the spliced OCA layer 6 is 20-50 μm.

[0035] As a preferred embodiment, the light transmittance of the edge area 61 is 30% to 70%.

[0036] During the assembly of this embodiment, the spliced OCA layer can be first attached to the back of the cover plate and then adhered to the film sensor. As a specific implementation, the spliced OCA layer adheres to the entire surface of the cover plate, that is, it covers the surface. The area of the film sensor is usually equal to or smaller than the area of the cover plate 1. When the area of some film sensors is smaller than that of the cover plate, the spliced OCA layer extends beyond the film sensor. In this way, when installed, the adhesion between the cover plate and the housing can be greater, which is beneficial to improving the structural performance.

[0037] Compared with the screen structure with an ink layer formed by traditional screen printing, the spliced OCA layer of this embodiment has the characteristics of being thin, soft and flat, and can be perfectly attached to the cover plate glass. Therefore, the cover plate can be a curved panel or a straight panel, and is more suitable for constructing 2.5D screens and curved screen products, thereby solving the problem of difficult screen printing of curved cover plates. In addition, due to the adhesive attachment characteristics of the spliced OCA layer, it can effectively prevent sputtering when the glass cover plate breaks.

[0038] This embodiment also provides a display module, including the display screen without a screen-printed ink layer described above.

[0039] Those of ordinary skill in the art can understand that the above description is only a preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A display screen without a silk screen ink layer, characterized in that: It comprises a cover plate (1), a splicing OCA layer (6) and a film sensor (2), wherein the cover plate (1) and the film sensor (2) are bonded together via the splicing OCA layer (6), and the splicing OCA layer (6) comprises a middle area (62) and an edge area (61) surrounding the middle area (62); The middle area (62) is made of OCA material and is used to correspond to the viewing area position of the display screen; The edge area (61) adopts colored OCA, which is used to correspond to the position of the shading area of ​​the outer circle of the viewing area of ​​the display screen; The thickness of the edge area (61) and the middle area (62) are equal.

2. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The spliced ​​OCA layer (6) is adhered to the entire surface of the cover plate (1).

3. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The area of ​​the film sensor (2) is equal to or smaller than the area of ​​the cover plate (1).

4. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The thickness of the spliced ​​OCA layer (6) is 20-50 μm.

5. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The light transmittance of the edge area (61) is 30% to 70%.

6. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The middle area (62) and the edge area (61) of the spliced ​​OCA layer (6) are spliced ​​into a whole.

7. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The middle area (62) and the edge area (61) of the spliced ​​OCA layer (6) are integrally formed.

8. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The color of the colored OCA is black or smoke gray.

9. The display screen without a silk-screen ink layer according to claim 1, characterized in that: The cover plate (1) is a curved plate or a straight plate.

10. A display module, characterized in that: A display screen without a silk-screen ink layer as claimed in any one of claims 1 to 9.

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