Cover plate structure of display module

Abstract

A cover plate structure of a display module comprises a cover plate, OCA glue, an upper polaroid, a TFT, a lower polaroid and the display module. The cover plate comprises glass, the glass is divided into a visible area and an invisible area, the height difference between the bottom of the invisible area and the bottom of the visible area is 20 microns, bottom covering ink is arranged at the bottom of the main body ink, and the height of the sum of the main body ink and the bottom covering ink is 20 microns; the cover plate, the OCA glue, the upper polaroid, the TFT, the lower polaroid and the display module are sequentially arranged together from top to bottom. According to the cover plate structure of the display module, the height difference exists between the back of the invisible area and the back of the visible area and is 20 microns, the thickness of the sum of the main body printing ink and the cover bottom printing ink which are arranged on the back of the invisible area in a silk-screen mode is 20 microns, and the defects that due to the fact that the visible area of a traditional cover plate is lack of printing ink, the thickness is not uniform, and the display effect is poor are overcome. Therefore, the problems of yellow spots, lamination bubbles and the like after full lamination are generated.

Description

Technical Field

[0001] The utility model relates to the technical field of display module cover plates, in particular to a cover plate structure of a display module. Background Art

[0002] In order to shield FPC, IC, display glass, backlight and other components to make the display effect more perfect, the LCD full-lamination display module will screen-print black ink in the non-visible area (outside the AA area) on the back of the cover. Since the black ink is screen-printed outside the AA area after the LENS white glass is formed, there is a height difference (about 15-20um) between the visible area (AA area) and the non-visible area (outside the AA area) of the cover. When the solid optical glue (OCA) is fully laminated, the OCA is squeezed due to the uneven lamination surface of the cover, which affects the thickness of the display glass liquid crystal box, and it is easy to produce yellow spots at the edge of the viewing area, as well as lamination bubbles. In view of this, a cover structure of the display module is designed to optimize and improve the ink height difference at the junction of the AA area and the VA area of ​​the cover, so that the full lamination surface is flat, and the defects such as lamination extrusion yellow spots and bubbles are reduced, thereby improving the product quality. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a cover plate structure of a display module.

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

[0005] A cover plate structure of a display module, comprising: a cover plate, an OCA glue, an upper polarizer, a TFT, a lower polarizer and a display module; the cover plate comprises glass, the glass is divided into a visible area and an invisible area, the bottom of the invisible area and the bottom of the visible area differ in height by 20 um, and a main body ink is arranged at the bottom of the invisible area, a cover bottom ink is arranged at the bottom of the main body ink, and the height of the main body ink and the cover bottom ink added together is 20 um; the cover plate, the OCA glue, the upper polarizer, the TFT, the lower polarizer and the display module are arranged together in this order from top to bottom.

[0006] In one embodiment, the visible area of ​​the glass is the central portion thereof, and the area thereof accounts for 95% to 98% of the total area thereof.

[0007] In one of the embodiments, the non-visible area of ​​the glass is the edge of the glass and surrounds the visible area, and the area of ​​the non-visible area is 2% to 8% of the entire area of ​​the glass.

[0008] In one of the embodiments, a camera hole is arranged in the center of the top of the glass surface, and a light sensing hole and a distance emitting hole are arranged on the right side of the top of the glass surface.

[0009] In one embodiment, the main body ink is 1 to 3 layers, such as 1 layer of black screen printing, 2-3 layers of white screen printing, and 2 layers of blue screen printing. The bottom cover ink is black or gray ink, and only 1 layer is screen printed.

[0010] In one of the embodiments, the shape and size of the OCA glue are the same as the shape and size of the front side of the cover plate, and the OCA glue is fully attached to the bottom of the cover plate.

[0011] In one of the embodiments, the periphery of the cover plate is designed to be a 2D, 2.5D or 3D arc shape, and the surface of the cover plate is coated with an anti-fingerprint oil layer.

[0012] In one embodiment, the light transmittance of the OCA glue is 90% to 95%.

[0013] In one of the embodiments, the center of the TFT is perpendicular to the center of the cover plate visible area, the shape and size of the front of the TFT are compatible with the shape and size of the front of the cover plate visible area, and a backlight shielding glue is provided at the connection position between the display module and the lower polarizer.

[0014] In one of the embodiments, an IC connection groove is provided at the center of the bottom of the OCA adhesive surface, and the connection groove is a hollow design.

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

[0016] The cover plate structure of the display module of the present invention is achieved by dividing the cover plate into a visible area and an invisible area, wherein there is a height difference between the back of the invisible area and the back of the visible area, and the difference is 20um, and the combined thickness of the main ink and the cover bottom ink silk-screened on the back of the invisible area is 20um. Therefore, the back of the cover glass no longer forms a height difference, thereby becoming a smooth and complete plane, which not only has a shielding effect, but also improves the uneven thickness caused by the lack of ink in the visible area of ​​the traditional cover plate, thereby causing problems such as yellow spots and bonding bubbles after full bonding. 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 front stacking schematic diagram of the cover plate structure of the display module of the utility model;

[0019] Figure 2 It is a schematic diagram of a top view of a structural cover plate structure of a display module of the utility model;

[0020] Figure 3 It is a front schematic diagram of the structural cover plate of the cover plate structure of the display module of the present invention.

[0021] In the figure: 1. Cover plate; 11. Glass; 12. Main body ink; 13. Cover bottom ink; 14. Camera hole; 15. Photosensitive hole; 16. Distance emission hole; 2. OCA glue; 3. Upper polarizer; 4. TFT; 5. Lower polarizer; 6. Backlight masking glue; 7. Display module. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] like Figure 1-3As shown, a cover plate structure of a display module includes: a cover plate 1, an OCA glue 2, an upper polarizer 3, a TFT4, a lower polarizer 5 and a display module 7; the cover plate 1 includes a glass 11, the glass 11 is divided into a visible area and an invisible area, the bottom of the invisible area and the bottom of the visible area are 20um different in height, and the bottom of the invisible area is provided with a main body ink 12, and the bottom of the main body ink 12 is provided with a cover bottom ink 13, and the height of the main body ink 12 and the cover bottom ink 13 added together is 20um; the cover plate 1, the OCA glue 2, the upper polarizer 3, the TFT4, the lower polarizer 5 and the display module 7 are sequentially arranged from top to bottom in this order. It should be noted that the display set in the display module 7 corresponds vertically to the visible area of ​​the cover plate 1.

[0027] like Figure 1-3 As shown, in one embodiment, the visible area of ​​the glass 11 is the central part thereof, and the area occupied by the visible area is 95% to 98% of the total area thereof. The invisible area of ​​the glass 11 is the edge of the glass 11 and surrounds the visible area, and the area of ​​the invisible area is 2% to 8% of the total area of ​​the glass 11. It should be noted that the four corners of the visible area are rounded, and the height difference design is made between the invisible area and the visible area of ​​the cover plate 1 during production.

[0028] like Figure 1-3 As shown, in one embodiment, a camera hole 14 is provided at the center of the top of the glass surface 11, and a light sensing hole 15 and a distance transmitting hole 16 are provided on the right side of the top of the glass surface 11. It should be noted that the camera hole 14, the light sensing hole 15 and the distance transmitting hole 16 are all provided in the non-visible area.

[0029] like Figure 1-3 As shown, in one embodiment, the main ink 12 is 1 to 3 layers, such as 1 layer of black screen printing, 2-3 layers of white screen printing, and 2 layers of blue screen printing, and the bottom cover ink 13 is black or gray ink, and only 1 layer is screen printed. It should be noted that the main ink 13 is the color of the full lamination module, which can be white, black, blue, or gradient color, etc.

[0030] like Figure 1-3 As shown, in one embodiment, the shape and size of the OCA glue 2 are the same as the shape and size of the front of the cover plate 1, and the OCA glue 2 is completely attached to the bottom of the cover plate 1. The light transmittance of the OCA glue 2 is 90% to 95%. It should be noted that the OCA glue 2 is provided with a tear-off film on the surface before attachment to protect the OCA glue 2 from external contamination.

[0031] like Figure 1-3 As shown, in one embodiment, the periphery of the cover plate 1 is designed to be 2D, 2.5D or 3D arc-shaped, and the surface of the cover plate 1 is coated with an anti-fingerprint oil layer. It should be noted that this design enhances the anti-dizziness capability of the cover plate 1.

[0032] like Figure 1-3 As shown, in one embodiment, the center of TFT4 is perpendicular to the center of the visible area of ​​cover plate 1, the shape and size of the front of TFT4 match the shape and size of the front of the visible area of ​​cover plate 1, and a backlight masking glue 6 is provided at the connection position between display module 7 and lower polarizer 5. It should be noted that the backlight masking glue 6 and the top of the backlight frame of the backlight module 7 are attached to each other, and the size of the backlight masking glue 6 is the same as the size of the frame edge at the top of the backlight frame.

[0033] like Figure 1-3 As shown, in one embodiment, an IC connection groove is provided at the center of the bottom of the surface of the OCA glue 2, and the connection groove is a hollow design. It should be noted that this design allows the IC to not be affected by the OCA glue 2 during connection.

[0034] 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. A cover structure of a display module, characterized in that: include: Cover plate (1), OCA glue (2), upper polarizer (3), TFT (4), lower polarizer (5) and display module (7); The cover plate (1) comprises glass (11), the glass (11) is divided into a visible area and a non-visible area, the bottom of the non-visible area differs from the bottom of the visible area by 20 μm in height, and a main body ink (12) is arranged at the bottom of the non-visible area, a cover bottom ink (13) is arranged at the bottom of the main body ink (12), and the total height of the main body ink (12) and the cover bottom ink (13) is 20 μm; The cover plate (1), OCA glue (2), upper polarizer (3), TFT (4), lower polarizer (5) and display module (7) are arranged together in this order from top to bottom.

2. The cover plate structure of the display module according to claim 1, characterized in that: The visible area of ​​the glass (11) is its central part, and its area occupies 95% to 98% of its total area.

3. The cover plate structure of the display module according to claim 1, characterized in that: The non-visible area of ​​the glass (11) is the edge of the glass (11) and surrounds the visible area, and the area of ​​the non-visible area is 2% to 8% of the entire area of ​​the glass (11).

4. The cover plate structure of the display module according to claim 1, characterized in that: A camera hole (14) is arranged at the center of the top of the glass (11) surface, and a light sensing hole (15) and a distance emission hole (16) are arranged on the right side of the top of the glass (11) surface.

5. The cover plate structure of the display module according to claim 1, characterized in that: The main body ink (12) is 1 to 3 layers, such as 1 layer of black screen printing, 2-3 layers of white screen printing, and 2 layers of blue screen printing. The bottom cover ink (13) is black or gray ink, and is only screen printed in 1 layer.

6. The cover plate structure of the display module according to claim 1, characterized in that: The shape and size of the OCA glue (2) are the same as the shape and size of the front side of the cover plate (1), and the OCA glue (2) is completely attached to the bottom of the cover plate (1).

7. The cover plate structure of the display module according to claim 1, characterized in that: The periphery of the cover plate (1) is designed to be a 2D, 2.5D or 3D arc shape, and the surface of the cover plate (1) is coated with an anti-fingerprint oil layer.

8. The cover plate structure of the display module according to claim 1, characterized in that: The light transmittance of the OCA glue (2) is 90% to 95%.

9. The cover plate structure of the display module according to claim 1, characterized in that: The center of the TFT (4) and the center of the visible area of ​​the cover plate (1) are perpendicular to each other, the shape and size of the front of the TFT (4) are compatible with the shape and size of the front of the visible area of ​​the cover plate (1), and a backlight masking glue (6) is provided at the connection position between the display module (7) and the lower polarizer (5).

10. The cover plate structure of the display module according to claim 1, characterized in that: An IC connection groove is arranged at the center of the bottom of the surface of the OCA glue (2), and the connection groove is of hollow design.

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