OCA (Optical Clear Adhesive) structure with ink layer in display module

Abstract

The utility model discloses an OCA (Optical Clear Adhesive) structure with an ink layer in a display module. The OCA structure comprises a cover plate, OCA, an upper polaroid, a TFT (Thin Film Transistor), a lower polaroid and a backlight module, the cover plate is attached to the top of the OCA glue, the bottom of the OCA glue is attached to the upper polaroid, and the TFT is arranged at the bottom of the upper polaroid; the OCA adhesive comprises an adhesive layer and an ink layer. According to the OCA adhesive structure with the ink layer in the display module, the ink layer and the adhesive layer are arranged in the OCA adhesive, and the ink layer and the adhesive layer respectively correspond to the invisible area and the visible area, so that the ink layer in the OCA adhesive can replace the ink layer in the cover plate, the ink layer does not need to be printed on the cover plate in a silk-screen manner, and the cost is reduced. Therefore, defects such as fitting extrusion yellow spots and bubbles caused by ink height difference can be reduced, and product quality and product competitiveness are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display module OCA glue, in particular to an OCA glue structure with an ink layer in a display module. Background Art

[0002] At present, in order to shield FPC, IC, display glass, backlight and other components to make the display effect more perfect, the current LCD full-bonded display module will screen-print black ink on the non-visible area (outside the AA area) on the back of the cover. Since the black ink is screen-printed outside the visible area after the LENS white glass is formed, there is a height difference between the visible area and the non-visible area of ​​the cover (about 15-20um). Therefore, when the solid optical glue is fully bonded, the OCA is squeezed due to the uneven bonding surface of the cover, which affects the thickness of the display glass liquid crystal box, and is prone to yellow spots at the edge of the viewing area, as well as bonding bubbles. In view of this, an OCA glue structure with an ink layer in a display module is designed to transfer the ink originally screen-printed on the cover to the OCA, so that there is no height difference between the AA area and the VA area of ​​the cover, and the cover and OCA are fully bonded on a flat surface, reducing the bonding extrusion yellow spots, bubbles and other defects caused by the ink height difference, thereby improving product quality and product competitiveness. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide an OCA glue structure with an ink layer in a display module.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An OCA glue structure with an ink layer in a display module comprises: a cover plate, an OCA glue, an upper polarizer, a TFT, a lower polarizer and a backlight module; the cover plate is attached to the top of the OCA glue, the bottom of the OCA glue and the upper polarizer are attached to each other, the TFT is arranged at the bottom of the upper polarizer, the lower polarizer is arranged at the bottom of the TFT, and the backlight module is arranged at the bottom of the lower polarizer; the OCA glue comprises a glue layer and an ink layer, the OCA glue comprises a visible area and a non-visible area, the ink layer is arranged in the non-visible area of ​​the OCA glue, and the glue layer is a visible area.

[0006] In one of the embodiments, the shape and size of the front side of the OCA glue are the same as the shape and size of the front side of the cover plate, and the cover plate and the OCA glue are fully fitted.

[0007] In one embodiment, the cover plate is divided into a visible area and a non-visible area. The visible area of ​​the cover plate is the center of the cover plate and occupies an area of ​​90% to 98% of the total area of ​​the cover plate, while the non-visible area occupies 2% to 10% of the total area of ​​the cover plate.

[0008] In one of the embodiments, the non-visible area and visible area of ​​the OCA glue are the same in area and size as the non-visible area and visible area of ​​the cover plate, and both the OCA glue and the cover plate are provided with camera holes, light sensing holes and distance emitting holes, and the camera holes, light sensing holes and distance emitting holes on the OCA glue and the cover plate correspond to each other.

[0009] In one of the embodiments, an IC binding position is provided at the bottom center of the front side of the OCA glue, and the IC binding position is a hollow design and is located at the top of the IC position in the backlight module.

[0010] In one of the embodiments, a backlight shading glue is provided at the connection between the bottom of the lower polarizer and the backlight module.

[0011] In one embodiment, the ink layer is composed of ink particles, and the color of the ink layer is white, black, blue, or gradient color.

[0012] In one of the embodiments, the four corners of the cover plate are designed with 2D, 2.5D or 3D arcs, the surface of the cover plate is evaporated with an AF layer, and the four corners and the surface are treated with anti-dizziness.

[0013] In one of the embodiments, the upper polarizer, the lower polarizer and the TFT are all located at the bottom of the visible area of ​​the cover plate, and the shape and size of the front of the upper polarizer, the lower polarizer and the TFT are adapted to the shape and size of the front of the visible area of ​​the cover plate.

[0014] In one of the embodiments, the size of the front side of the backlight module matches the size of the front side of the cover plate, and the positions of the light guide plate in the backlight module, the LCD display, and the display area of ​​the cover plate correspond to each other.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The OCA glue structure with an ink layer in the display module of the utility model is designed by arranging an ink layer and a glue layer in the OCA glue, and the ink layer and the glue layer respectively correspond to the invisible area and the visible area, and at the same time the OCA glue and the cover plate are designed to have exactly the same shape and size. Therefore, the ink layer in the OCA glue can replace the ink layer in the cover plate, so that the silk-screen ink layer on the cover plate is no longer needed, thereby reducing the defects such as yellow spots and bubbles caused by the height difference of the ink, thereby improving the product quality and product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the front stacking of the OCA glue structure with the ink layer in the display module of the utility model;

[0019] Figure 2 This is a front schematic diagram of a cover plate of an OCA adhesive structure with an ink layer in a display module of the present invention;

[0020] Figure 3 This is a schematic side view of the OCA glue structure with an ink layer in the display module of the utility model;

[0021] Figure 4 This is a schematic diagram of a top view of a cover plate of an OCA adhesive structure with an ink layer in a display module of the present invention;

[0022] Figure 5 It is a schematic diagram of the top view of the OCA glue of the OCA glue structure with the ink layer in the display module of the utility model.

[0023] In the figure: 1. Cover plate; 2. OCA glue; 21. Glue layer; 22. Ink layer; 23. IC binding position; 3. Upper polarizer; 4. TFT; 5. Lower polarizer; 6. Backlight shading glue; 7. Backlight module. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0025] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] Unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] like Figure 1-5 As shown, an OCA glue structure with an ink layer in a display module includes: a cover plate 1, an OCA glue 2, an upper polarizer 3, a TFT4, a lower polarizer 5 and a backlight module 7; the cover plate 1 is attached to the top of the OCA glue 2, the bottom of the OCA glue 2 and the upper polarizer 3 are attached to each other, the TFT4 is arranged at the bottom of the upper polarizer 3, the lower polarizer 5 is arranged at the bottom of the TFT4, and the backlight module 7 is arranged at the bottom of the lower polarizer 5; the OCA glue 2 includes a glue layer 21 and an ink layer 22, the OCA glue 2 includes a visible area and a non-visible area, the ink layer 22 is arranged in the non-visible area of ​​the OCA glue 2, and the glue layer 21 is a visible area. It should be noted that the visible area of ​​the OCA glue 2 is transparent, its transmittance is about 95% to 98%, and its thickness is 100um, or 125um, or 150um.

[0029] like Figure 1-5 As shown, in one embodiment, the shape and size of the front side of the OCA adhesive 2 are the same as the shape and size of the front side of the cover plate 1, and the cover plate 1 and the OCA adhesive 2 are fully fitted. It should be noted that when the OCA adhesive 2 and the cover plate 1 are fitted, they need to be aligned so that the OCA adhesive 2 and the cover plate 1 can be completely overlapped and fitted together.

[0030] like Figure 1-5As shown, in one embodiment, the cover plate 1 is divided into a visible area and a non-visible area. The visible area of ​​the cover plate 1 is the center of the cover plate 1 and occupies an area of ​​90% to 98% of the total area of ​​the cover plate 1, while the non-visible area occupies 2% to 10% of the total area of ​​the cover plate 1. The non-visible area and visible area of ​​the OCA glue 2 are the same in area and size as the non-visible area and visible area of ​​the cover plate 1. Both the OCA glue 2 and the cover plate 1 are provided with camera holes, light-sensing holes and distance-emitting holes, and the camera holes, light-sensing holes and distance-emitting holes on the OCA glue 2 and the cover plate 1 correspond to each other. It should be noted that this design allows the cover plate 1 and the OCA glue 2 to have a reference for alignment when they are bonded, thereby facilitating the bonding of the cover plate 1 and the OCA glue 2. At the same time, after the cover plate 1 and the OCA glue 2 are bonded, the ink layer 22 of the OCA glue 2 can cover the non-visible area on the cover plate 1.

[0031] like Figure 1-5 As shown, in one embodiment, an IC binding position 23 is provided at the bottom position of the center of the front side of the OCA glue 2. The IC binding position 23 is a hollow design and is located at the top of the IC position in the backlight module 7. It should be noted that this design can prevent the OCA glue 2 from squeezing the IC and causing malfunction. Here, the OCA glue 2 replaces the original IC protective glue and silicone glue to protect the IC and the single-layer area, so that the single-layer area is tightly bonded to the cover plate 1, the gap is reduced, and the drop resistance of the display module is enhanced.

[0032] like Figure 1-5 As shown, in one embodiment, a backlight shading glue 6 is provided at the connection between the bottom of the lower polarizer 5 and the backlight module 7. It should be noted that the backlight shading glue 6 is located on the left and right sides of the bottom of the lower polarizer 5, and the bottom of the backlight shading glue 6 and the two sides of the top of the backlight module 7 are connected to each other.

[0033] like Figure 1-5 As shown, in one embodiment, the ink layer 22 is composed of ink particles, and the color of the ink layer 22 is white, black, blue, or gradient color. It should be noted that the ink layer 22 has display and shielding functions, and the ink is divided into main ink and cover ink. The main ink has a display function and can be white, black, blue, or gradient color, etc. The cover ink has a shielding function and is black / or gray ink.

[0034] like Figure 1-5 As shown, in one embodiment, the four corners of the cover plate 1 are designed with 2D, 2.5D or 3D arcs, the surface of the cover plate 1 is evaporated with an AF layer, and the four corners and the surface are treated with anti-dizziness. It should be noted that this design can make the display module have an anti-dizziness function and enhance the anti-fall ability of the cover plate 1.

[0035] like Figure 1-5As shown, in one embodiment, the upper polarizer 3, the lower polarizer 5 and the TFT4 are all located at the bottom of the visible area of ​​the cover plate 1, and the shape and size of the upper polarizer 3, the lower polarizer 5 and the TFT4 front face are adapted to the shape and size of the visible area of ​​the cover plate 1. The size of the front face of the backlight module 7 is adapted to the size of the front face of the cover plate 1, and the positions of the light guide plate and the LCD liquid crystal display in the backlight module 7 and the display area of ​​the cover plate 1 correspond to each other. It should be noted that this design allows the visible area of ​​the cover plate 1 to be perpendicular to the LCD liquid crystal display in the backlight module 7, so that the visible area can display various data without being blocked.

[0036] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An OCA adhesive structure with an ink layer in a display module, characterized in that: include: Cover plate (1), OCA glue (2), upper polarizer (3), TFT (4), lower polarizer (5) and backlight module (7); The cover plate (1) is attached to the top of the OCA glue (2), the bottom of the OCA glue (2) and the upper polarizer (3) are attached to each other, the TFT (4) is arranged at the bottom of the upper polarizer (3), the lower polarizer (5) is arranged at the bottom of the TFT (4), and the backlight module (7) is arranged at the bottom of the lower polarizer (5); The OCA glue (2) comprises a glue layer (21) and an ink layer (22); the OCA glue (2) comprises a visible area and a non-visible area; the ink layer (22) is arranged in the non-visible area of ​​the OCA glue (2); and the glue layer (21) is a visible area.

2. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: The shape and size of the front side of the OCA glue (2) are the same as the shape and size of the front side of the cover plate (1), and the cover plate (1) and the OCA glue (2) are designed to be fully fitted.

3. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: The cover plate (1) is divided into a visible area and a non-visible area. The visible area of ​​the cover plate (1) is the center of the cover plate (1) and occupies an area of ​​90% to 98% of the total area of ​​the cover plate (1), while the non-visible area occupies 2% to 10% of the total area of ​​the cover plate (1).

4. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: The non-visible area and visible area of ​​the OCA glue (2) are the same in area and size as the non-visible area and visible area of ​​the cover plate (1); both the OCA glue (2) and the cover plate (1) are provided with camera holes, light sensing holes and distance emitting holes, and the camera holes, light sensing holes and distance emitting holes on the OCA glue (2) and the cover plate (1) correspond to each other.

5. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: An IC binding position (23) is arranged at the bottom position in the center of the front side of the OCA glue (2); the IC binding position (23) is of hollow design and is located at the top of the IC position in the backlight module (7).

6. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: A backlight shading glue (6) is provided at the connection between the bottom of the lower polarizer (5) and the backlight module (7).

7. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: The ink layer (22) is composed of ink particles, and the color of the ink layer (22) is white, black, blue, or a gradient color.

8. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: The four corners of the cover plate (1) are designed in a 2D, 2.5D or 3D arc shape, the surface of the cover plate (1) is evaporated with an AF layer, and the four corners and the surface are treated with anti-dizziness.

9. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: The upper polarizer (3), the lower polarizer (5) and the TFT (4) are all located at the bottom of the visible area of ​​the cover plate (1), and the shape and size of the front of the upper polarizer (3), the lower polarizer (5) and the TFT (4) are compatible with the shape and size of the front of the visible area of ​​the cover plate (1).

10. The OCA adhesive structure with ink layer in the display module according to claim 1, characterized in that: The size of the front of the backlight module (7) matches the size of the front of the cover plate (1), and the positions of the light guide plate in the backlight module (7), the LCD liquid crystal display, and the display area of ​​the cover plate (1) correspond to each other.

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