Display module protection film
By designing a double-layer protective film similar to a polarizer structure, the problem of scratches and contamination of the glass cover during the production process of OLED display modules is solved, and the effect of improving product quality stability is achieved.
Patent Information
- Application Number
- CN202421318406.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-11
AI Technical Summary
During the production process, OLED display modules are prone to bad conditions such as scratches and dirt on the glass cover, resulting in potential quality hazards.
A double-layer protective film including PU glue, first TAC, PVA, second TAC and transparent PET is designed with a light transmittance of more than 88%. It is automatically attached and baked with a patch machine. The design of the protective film is similar to a polarizer structure to prevent scratches or contamination on the glass surface.
It effectively prevents scratches and contamination of the glass cover during the display module production process, improves the quality stability of the product, and avoids potential quality hazards.
Smart Images
Figure CN222613241U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display modules, in particular to a display module protective film. Background Art
[0002] With the advancement of technology and the improvement of living standards, smart wearable devices such as bracelets or watches are becoming more and more common. OLED displays are widely used in entry-level watches or bracelets due to their superior contrast and competitive prices. OLED can emit light independently without the need for an external backlight. Machine manufacturers hope to make the display screen thinner, so that more space can be reserved for the battery of the whole machine and the standby time of the product can be increased. Such display modules usually do not have polarizers. Due to the lack of protection from the upper polarizer, it is easy for the glass cover to be scratched, dirty, and other defects to occur during the production process of the display module, resulting in potential quality risks. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a display module protective film.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A display module protective film, characterized in that it comprises: a display module; the display module comprises a glass substrate, a rear cover glass, a protective film, and an FPC; the back of the glass substrate and the rear cover glass are connected to each other, the back of the rear cover glass is provided with a protective film, and the bottom of the glass substrate and the FPC are connected to each other; the protective film comprises PU glue, a first TAC, PVA, a second TAC and transparent PET, and the light transmittance of the protective film is above 88%.
[0006] In one embodiment, the center of the front surface of the glass substrate is a display area of the display screen, and the shape and size of the front surface of the protective film are adapted to the shape and size of the front surface of the display area of the display screen.
[0007] In one of the embodiments, a protective film tearing handle is provided on the right side of the front side of the protective film, and a transparent tape is provided on one side of the protective film tearing handle.
[0008] In one of the embodiments, silicone rubber is disposed on the front and back of the connection between the FPC and the glass substrate, and the positions of the two silicone rubbers on the glass substrate are designed to be staggered up and down.
[0009] In one of the embodiments, the thickness of the protective film is 0.14 mm, and the film layers of the protective film are stacked together in the order of the PU glue, the first TAC, the PVA, the second TAC and the transparent PET.
[0010] In one of the embodiments, the protective film and the rear cover glass are automatically attached to each other by a bonding machine and then subjected to a baking treatment.
[0011] In one embodiment, the transparent PET and the protective film tear-off handle are integrally formed, and the front side of the protective film tear-off handle is square in shape.
[0012] In one of the embodiments, the thickness of the rear cover glass is 0.05 mm, and the shape and size of the front side of the rear cover glass match the shape and size of the front side of the glass substrate.
[0013] In one embodiment, the thickness of the glass substrate is 0.3 mm, and the front of the glass substrate is an irregular shape with arcs on the left and right sides and a rectangle on the top and bottom.
[0014] In one of the embodiments, a reinforcing plate is provided on the back of the gold finger at the bottom of the front side of the FPC.
[0015] Compared with the prior art, the utility model has at least the following advantages:
[0016] The display module protective film of the utility model designs a single-layer transparent PET protective film with PU adhesive into a double-layer protective film of transparent PET composite TAC, PVA, TAC, and PU adhesive, so that the protective film can produce a structure similar to that of a polarizer, and its overall transmittance is above 88%. A patch machine is used for automatic attachment and baking treatment. In addition, employees can lift up the upper transparent PET during the production process and inspect the appearance of the module through the composite layer of TAC and transparent PVA. The PVA layer protects the glass and prevents the surface from being scratched or contaminated, thereby preventing the glass cover from being scratched, dirty, and other undesirable conditions that are easy to occur during the production process of the display module, resulting in potential quality risks. 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 overall structure of the front side of the display module protection film of the utility model;
[0019] Figure 2 This is a schematic diagram of the overall structure of the display module protection film of the utility model from the side;
[0020] Figure 3 This is a schematic diagram of the front structure of the display module protective film of the utility model;
[0021] Figure 4 It is a schematic diagram of the overall stacking structure of the display module protective film of the utility model.
[0022] In the figure: 1. display module; 11. glass substrate; 12. protective film; 121. PU glue; 122. first TAC; 123. PVA; 124. second TAC; 125. transparent PET; 13. FPC; 14. protective film removal handle; 141. transparent tape; 15. rear cover glass; 16. silicone. DETAILED DESCRIPTION
[0023] 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.
[0024] 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.
[0025] 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.
[0026] 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.
[0027] like Figure 1-4As shown, a display module protective film includes: a display module 1; the display module 1 includes a glass substrate 11, a rear cover glass 15, a protective film 12, and an FPC 13; the back of the glass substrate 11 is connected to the rear cover glass 15, the back of the rear cover glass 15 is provided with a protective film 12, and the bottom of the glass substrate 11 is connected to the FPC 13; the protective film 12 includes a PU glue 121, a first TAC 122, a PVA 123, a second TAC 124, and a transparent PET 125, and the light transmittance of the protective film 12 is above 88%. It should be noted that the transparent PET 125 needs to be easily separated, so its adhesion is small, and the protective film 12 requires neat punching, and no burrs, burrs, and other defects on the edges.
[0028] like Figure 1-4 As shown, in one embodiment, the center of the front of the glass substrate 11 is the display area of the display screen, and the shape and size of the front of the protective film 12 are adapted to the shape and size of the front of the display area of the display screen. The thickness of the glass substrate 11 is 0.3 mm, and the shape of the front of the glass substrate 11 is an irregular shape with arcs on the left and right sides and rectangles on the top and bottom. It should be noted that the display area of the glass substrate 11 accounts for 80% to 85% of its overall area.
[0029] like Figure 1-4 As shown, in one embodiment, a protective film tearing handle 14 is provided on the right side of the front of the protective film 12, and a transparent tape 141 is provided on one side of the protective film tearing handle 14. The transparent PET 125 and the protective film tearing handle 14 are integrally formed, and the front shape of the protective film tearing handle 14 is square. It should be noted that this design can facilitate the staff to directly tear off the protective film tearing handle 14 and take the transparent PET 125 away from the surface of the second TAC 124, thereby facilitating the appearance inspection of the module.
[0030] like Figure 1-4 As shown, in one embodiment, silicone rubber 16 is provided on the front and back of the connection between the FPC 13 and the glass substrate 11, and the positions of the two silicone rubbers 16 on the glass substrate 11 are designed to be staggered up and down. It should be noted that this design can strengthen the connection between the FPC 13 and the glass substrate 11, and protect the connection to prevent the FPC 13 from breaking due to bending.
[0031] like Figure 1-4 As shown, in one embodiment, the thickness of the protective film 12 is 0.14 mm, and the film layers of the protective film 12 are stacked in the order of PU glue 121, first TAC 122, PVA 123, second TAC 124 and transparent PET 125. It should be noted that the PVA 123 needs to be torn off before the customer installs the entire display module 1.
[0032] like Figure 1-4As shown in an embodiment, the protective film 12 and the rear cover glass 15 are automatically attached to each other by a mounting machine and then subjected to a baking treatment. It should be noted that this method can speed up the production efficiency and detection efficiency of the display module 1.
[0033] like Figure 1-4 As shown, in one embodiment, the thickness of the rear cover glass 15 is 0.05 mm, and the shape and size of the front of the rear cover glass 15 match the shape and size of the front of the glass substrate 11. It should be noted that a reinforcing plate is provided on the back of the gold finger at the bottom of the front of the FPC 13. It should be noted that the FPC 13 is a flexible circuit board, and when the display module 1 is assembled, the FPC 13 needs to be bent so that it is hidden behind the back of the glass substrate 11.
[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 display module protective film, characterized in that: include: Display module (1); The display module (1) comprises a glass substrate (11), a rear cover glass (15), a protective film (12), and an FPC (13); The back of the glass substrate (11) and the rear cover glass (15) are connected to each other, a protective film (12) is provided on the back of the rear cover glass (15), and the bottom of the glass substrate (11) and the FPC (13) are connected to each other; The protective film (12) comprises PU glue (121), a first TAC (122), PVA (123), a second TAC (124) and a transparent PET (125), and the light transmittance of the protective film (12) is greater than 88%.
2. The display module protection film according to claim 1, characterized in that: The center of the front side of the glass substrate (11) is the display area of the display screen, and the shape and size of the front side of the protective film (12) are adapted to the shape and size of the front side of the display area of the display screen.
3. The display module protection film according to claim 1, characterized in that: A protective film tearing handle (14) is provided on the right side of the front side of the protective film (12), and a transparent adhesive tape (141) is provided on one side of the protective film tearing handle (14).
4. The display module protection film according to claim 1, characterized in that: Silicone gel (16) is provided on the front and back of the connection between the FPC (13) and the glass substrate (11), and the positions of the two silicone gels (16) on the glass substrate (11) are designed to be staggered up and down.
5. The display module protection film according to claim 1, characterized in that: The thickness of the protective film (12) is 0.14 mm, and the film layers of the protective film (12) are stacked together in the order of the PU glue (121), the first TAC (122), the PVA (123), the second TAC (124) and the transparent PET (125).
6. The display module protection film according to claim 1, characterized in that: When the protective film (12) and the rear cover glass (15) are bonded together, they are automatically bonded by a bonding machine and subjected to a baking treatment.
7. The display module protection film according to claim 3, characterized in that: The transparent PET (125) and the protective film tearing handle (14) are integrally formed, and the front side of the protective film tearing handle (14) is in the shape of a square.
8. The display module protection film according to claim 1, characterized in that: The thickness of the rear cover glass (15) is 0.05 mm, and the shape and size of the front side of the rear cover glass (15) match the shape and size of the front side of the glass substrate (11).
9. The display module protection film according to claim 1, characterized in that: The thickness of the glass substrate (11) is 0.3 mm, and the front face of the glass substrate (11) is an irregular shape with arcs on the left and right sides and a rectangular shape on the top and bottom.
10. The display module protection film according to claim 1, characterized in that: A reinforcing plate is provided at the back of the gold finger at the bottom of the front side of the FPC (13).