Structure for improving screen printing laminating precision of display screen and cover plate

Abstract

The utility model discloses a structure for improving screen printing fitting precision of a display screen and a cover plate, which comprises a display module and a cover plate, two Marks are arranged at the bottom of the display module, the two Marks are in mirror symmetry in the display module, and a first auxiliary line is formed by connecting the two Marks. And a second auxiliary line is silk-printed on one diameter of the cover plate. A worker extends the second auxiliary line, the included angle between the first auxiliary line and the second auxiliary line is measured through an equipment algorithm, the fixed included angle formed by the first auxiliary line and the second auxiliary line serves as the standard, and therefore the rotation angle of the display module and the cover plate is confirmed, the precision of the rotation angle of the two circles in the attaching process is greatly improved, and the attaching precision is improved. By using the structure, the rotation precision can be less than or equal to 1 degree, and the fitting precision of the cover plate silk screen and the display module is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of display screens, and in particular to a structure for improving the accuracy of screen printing bonding between the display screen and the cover plate. Background Technology

[0002] AMOLED products are widely used in the current display market, such as smart bracelets, smartwatches, smart home devices, and e-cigarette products.

[0003] To cater to customers' aesthetic needs, various irregularly shaped cover plates for displays have emerged, with circular AMOLED displays and cover plates for smartwatches and smart bands being particularly widely used. Many customers have added various aesthetically pleasing silkscreen printings to the surface of the circular cover plates. This necessitates ensuring the rotational precision of the silkscreen printing between the display and the cover plate during the bonding process. Otherwise, misalignment between the silkscreen printing and the display will lead to bonding defects. This also complicates the production process.

[0004] In existing technologies, the typical procedure for bonding a circular AMOLED display to a circular cover plate involves drawing a straight line A along the edge of a fixed pixel on the circular AMOLED display, and then drawing a straight line B between the silkscreen markings on the cover plate and the center of the cover plate. A bonding algorithm then determines the rotation angle between the display and the cover plate based on the fixed angle formed by lines A and B. However, due to issues such as deviations in the precision of sample taking during the bonding process, inaccurate edge calibration, and blurry edge images, the actual rotation angle deviation after bonding is between 2 and 3 degrees, resulting in an inaccurate bonding effect. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a structure that improves the accuracy of screen printing bonding between the display screen and the cover plate.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A structure for improving the screen printing bonding accuracy between the display screen and the cover plate includes:

[0008] The display module has two Marks at its bottom, which are mirror-symmetrical within the module. A line connecting the two Marks forms a first auxiliary line.

[0009] A cover plate, on which a second auxiliary line is silkscreened along a diameter, and the display module is attached to the cover plate via the first auxiliary line and the second auxiliary line.

[0010] In one embodiment, the display module and the front of the cover plate are circular in shape.

[0011] In one embodiment, the display module is characterized as an AMOLED display screen.

[0012] In one embodiment, the display module includes an upper polarizer, a lower polarizer, and a display screen, wherein the display screen is disposed between the upper polarizer and the lower polarizer.

[0013] In one embodiment, the Mark is characterized in that the cross-section of the front side is cross-shaped.

[0014] In one embodiment, the mark is characterized in that it is made on a film mold, which is up to the micrometer level.

[0015] In one embodiment, the cover plate is characterized as a Lens cover plate.

[0016] In one embodiment, the cover plate is characterized by having a protective film attached to its surface.

[0017] In one embodiment, the protective film has an edge extending into a tear handle.

[0018] In one embodiment, the protective film is characterized as a release film.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] This invention improves the bonding accuracy of the screen printing on the display screen and the cover plate by setting up a display module and a cover plate. Two markers are placed at the bottom of the display module, mirror-symmetrically positioned within the module. A line connecting the two markers forms a first auxiliary line. A second auxiliary line is screen-printed on a diameter of the cover plate. The operator extends the second auxiliary line and uses an algorithm to measure the angle between the first and second auxiliary lines. Using this fixed angle, the rotation angle between the display module and the cover plate is determined, significantly improving the accuracy of the rotation angle between the two circles during bonding. The rotation accuracy using this structure can be ≤1 degree, greatly enhancing the bonding accuracy between the screen printing on the cover plate and the display module. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0022] Figure 1This is a schematic diagram of the display module in one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the cover plate in one embodiment of the present invention.

[0024] Figure label:

[0025] Display module 100, Mark 101, first auxiliary line 102, cover plate 200, second auxiliary line 201. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0027] This application proposes a structure to improve the screen printing bonding accuracy between the display screen and the cover plate. Please refer to [link / reference]. Figure 1 and Figure 2 The system includes a display module 100 and a cover plate 200. Two Marks 101 are positioned at the bottom of the display module 100, mirror-symmetrically positioned. A line connecting the two Marks 101 forms a first auxiliary line 102. A second auxiliary line 201 is silkscreened on a diameter of the cover plate 200. The silkscreening of the second auxiliary line 201 is made with the cover plate mold, ensuring high precision. The operator extends the second auxiliary line 201 and uses an algorithm to measure the angle between the first auxiliary line 102 and the second auxiliary line 201. Using this fixed angle, the rotation angle between the display module 100 and the cover plate 200 is determined, significantly improving the accuracy of the rotation angle between the two circles during bonding. The rotation accuracy using this structure can be ≤1 degree, greatly improving the bonding accuracy between the silkscreened cover plate 200 and the display module 100. Preferably, the cover plate 200 is a lens cover plate.

[0028] Please refer to it again. Figure 1 and Figure 2 The front of the display module 100 and the cover plate 200 are circular. The circular shape is more difficult to fit together, but the rotational precision of this structure is high, which makes the silkscreen of the cover plate 200 and the alignment precision of the display module 100 high, thus making the bonding precision of the cover plate 200 and the display module 100 high.

[0029] Preferably, the display module 100 is an AMOLED display.

[0030] In one embodiment, the display module 100 includes an upper polarizer, a lower polarizer, and a display screen, with the display screen disposed between the upper polarizer and the lower polarizer.

[0031] Furthermore, the front cross-section of Mark 101 is cross-shaped. Specifically, Mark 101 is made on the film layer mold, which is up to the micron level, and Mark 101 is also a reference point used when bonding the upper and lower glass of the cover plate 200, so the precision is very high.

[0032] In one embodiment, a protective film is attached to the surface of the cover 200, which not only maintains the cleanliness of the cover 200 but also prevents damage to the surface of the cover 200 from foreign objects. Preferably, the protective film is a release film. In addition, a tear handle extends from the edge of the protective film, which facilitates the removal of the protective film by the operator.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A structure for improving the screen printing bonding accuracy between the display screen and the cover plate, characterized in that, include: The display module has two Marks at its bottom, which are mirror-symmetrical within the module. A line connecting the two Marks forms a first auxiliary line. A cover plate, on which a second auxiliary line is silkscreened along a diameter, and the display module is attached to the cover plate via the first auxiliary line and the second auxiliary line.

2. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 1, characterized in that, The display module and the front of the cover plate are circular in shape.

3. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 1, characterized in that, The display module is an AMOLED display screen.

4. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 1, characterized in that, The display module includes an upper polarizer, a lower polarizer, and a display screen, with the display screen disposed between the upper polarizer and the lower polarizer.

5. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 1, characterized in that, The cross-section of the front of the Mark is cross-shaped.

6. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 1, characterized in that, The mark is made on the film mold, which is up to the micrometer level.

7. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 1, characterized in that, The cover plate is a Lens cover plate.

8. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 1, characterized in that, A protective film is attached to the surface of the cover plate.

9. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 8, characterized in that, The edge of the protective film extends into a tear handle.

10. The structure for improving the screen printing bonding accuracy between the display screen and the cover plate according to claim 9, characterized in that, The protective film is a release film.

Images