Drop-resistant and light-leakage-proof display module

Abstract

The utility model discloses an anti-falling light leakage prevention display module. The anti-falling light leakage prevention display module comprises a cover plate, a liquid crystal display screen and a backlight structure which are sequentially stacked. The liquid crystal display screen comprises TFT glass and CF glass which are stacked in sequence, the CF glass is arranged on the side close to the cover plate, and the TFT glass extends outwards relative to the CF glass to form a TFT single-layer area; the liquid crystal display screen further comprises an anti-collision assembly, the anti-collision assembly comprises anti-collision foam, the anti-collision foam is arranged on the side, away from the liquid crystal display screen, of the backlight structure, and the anti-collision foam corresponds to the area of the TFT single-layer area. According to the anti-falling light leakage prevention display module, the anti-collision foam is arranged on the area, corresponding to the TFT single-layer area, of the backlight structure, the impact force of a mobile phone middle frame on the TFT single-layer area in the display module is relieved through the anti-collision foam when a mobile phone falls, and therefore the display module can be effectively protected; and the problem of poor functions such as a blurred screen or a black screen caused by glass breakage in the TFT single-layer area is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of display module production, in particular to an anti-fall and anti-light leakage display module. Background Art

[0002] In today's advanced communication network, display modules are core components of various electronic products, and their performance and stability are directly related to user experience and product life. For example, mobile phones are indispensable electronic communication devices in people's daily lives. While the convenience and ease of use of mobile phones bring convenience to people's lives, the reliability of mobile phones is gradually being paid attention to by more and more consumers.

[0003] Since mobile phones are inevitably bumped and dropped during use, the first to be impacted is the display module component on the mobile phone. Mobile phone display modules generally include liquid crystal display screens and backlight structures, where the liquid crystal display screen includes TFT (thin film field effect transistor) glass and CF (color filter) glass. A TFT single-layer area for binding the driver IC and FPC (flexible circuit board) is formed on the TFT glass. Although silicone glue is applied to the TFT single-layer area before the display module is combined with the cover plate for protection, there is still a gap between the TFT single-layer area and the cover plate, that is, the TFT single-layer area is in a suspended state. Therefore, once the back of the display module corresponding to the TFT single-layer area is hit, it is easy to cause the glass in the TFT single-layer area to break, and then there will be malfunctions such as flowery screen / black screen. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a drop-resistant and light-leakage-proof display module, thereby reducing the risk of glass breakage in the TFT single-layer area.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A drop-resistant and light-leakage-proof display module comprises: a cover plate, a liquid crystal display screen and a backlight structure stacked in sequence; the liquid crystal display screen comprises TFT glass and CF glass stacked in sequence, the CF glass is arranged on a side close to the cover plate, the TFT glass extends outward relative to the CF glass to form a TFT single-layer area, an IC chip and a display screen FPC are bound to the TFT single-layer area, and the TFT single-layer area is covered with silicone glue; and an anti-collision component is also included, the anti-collision component comprises anti-collision foam, the anti-collision foam is arranged on a side of the backlight structure away from the liquid crystal display screen, and the anti-collision foam corresponds to the area of ​​the TFT single-layer area.

[0007] In one of the embodiments, a plurality of anti-collision foams are provided, each of which is arranged around the backlight structure, and one of the anti-collision foams corresponds to the area of ​​the TFT single-layer area, and anti-collision foams are respectively provided at the four corner ends of the backlight structure.

[0008] In one of the embodiments, two anti-collision foams are provided, and the two anti-collision foams are arranged around the four sides of the backlight structure, and the two anti-collision foams partially correspond to the area of ​​the TFT single-layer area, and the two anti-collision foams are partially located at the four corner ends of the backlight structure.

[0009] In one embodiment, the width of the anti-collision foam is 2.9 mm to 3.2 mm.

[0010] In one embodiment, the anti-collision foam includes a double-sided adhesive layer, a foam body layer and a release film layer. The double-sided adhesive layer, the foam body layer and the release film layer are stacked in sequence, and the side of the double-sided adhesive layer away from the foam body layer is attached to the backlight structure.

[0011] In one embodiment, the thickness of the double-sided adhesive layer is 0.05 mm.

[0012] In one embodiment, the thickness of the foam body layer is 0.45 mm to 0.55 mm.

[0013] In one embodiment, a positioning hole is formed on the release film layer.

[0014] In one embodiment, the liquid crystal display screen further includes an upper polarizer and a lower polarizer, and the upper polarizer, the CF glass, the TFT glass and the lower polarizer are stacked in sequence.

[0015] In one embodiment, the backlight structure includes a backlight frame and an optical element. A limiting cavity is provided on the backlight frame. The optical element is disposed in the limiting cavity. The anti-collision foam is attached to a side surface of the backlight frame away from the liquid crystal display screen.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] 1. The anti-fall and anti-light leakage display module of the utility model arranges anti-collision foam on the area of ​​the backlight structure corresponding to the TFT single-layer area. The anti-collision foam can alleviate the impact force of the mobile phone middle frame on the TFT single-layer area in the display module when the mobile phone falls, thereby effectively protecting the display module and avoiding glass breakage in the TFT single-layer area, resulting in malfunctions such as a flowery screen or a black screen.

[0018] 2. The anti-drop and anti-light leakage display module of the utility model arranges anti-collision foam at the four corner ends of the backlight structure to prevent the backlight film material in the backlight optical element from coming apart due to falling and causing light leakage, thereby improving the anti-drop performance of the display module and further improving the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0020] Figure 1 This is a schematic diagram of the stacking structure of the anti-fall and anti-light leakage display module in one embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the back structure of the anti-fall and anti-light leakage display module in one embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the back structure of the anti-fall and anti-light leakage display module in the second embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the back view of the anti-fall and anti-light leakage display module in the third embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of the stacking structure of the anti-collision foam of the anti-fall and anti-light leakage display module in one embodiment of the utility model. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0026] See also Figure 1 and Figure 2 As shown, an anti-drop and anti-light leakage display module 10 includes: a cover plate 100, a liquid crystal display screen 200 and a backlight structure 300 stacked in sequence; the liquid crystal display screen 200 includes a TFT glass 210 and a CF glass 220 stacked in sequence, the CF glass 220 is arranged on a side close to the cover plate 100, the TFT glass 210 extends outward relative to the CF glass 220 to form a TFT single-layer area 211, an IC chip 400 and a display screen FPC 500 are bound to the TFT single-layer area 211, and the TFT single-layer area 211 is covered with silicone glue 211a; the anti-drop and anti-light leakage display module also includes an anti-collision component, the anti-collision component includes an anti-collision foam 600, the anti-collision foam 600 is arranged on a side of the backlight structure 300 away from the liquid crystal display screen 200, and the anti-collision foam 600 corresponds to the area of ​​the TFT single-layer area 211.

[0027] It should be noted that by covering the TFT single-layer area 211 with silicone glue 211a and reducing the gap between the TFT single-layer area 211 and the cover plate 100 by the silicone glue 211a, the risk of the TFT single-layer area 211 being damaged and broken due to impact is further reduced; further, by setting an anti-collision foam 600 on the area of ​​the backlight structure 300 corresponding to the TFT single-layer area 211, the anti-collision foam 600 is provided to alleviate the impact force of the middle frame of the mobile phone on the TFT single-layer area 211 in the display module when the mobile phone falls, thereby effectively protecting the display module and avoiding glass breakage in the TFT single-layer area 211 and malfunctions such as a flowery screen or a black screen. Furthermore, in this embodiment, two anti-collision foams 600 are provided, and the two anti-collision foams 600 are provided at two corner ends of the bottom of the backlight structure 300, and the anti-collision foams 600 at these two locations correspond to the area of ​​the TFT single-layer area 211. The anti-collision foams 600 at these two locations are used to buffer the impact force and reduce the risk of damage to the glass in the TFT single-layer area 211.

[0028] See also Figure 3 As shown, in the second embodiment, a plurality of anti-collision foams 600 are provided, each anti-collision foam 600 is arranged around the backlight structure 300, and one of the anti-collision foams 600 corresponds to the area of ​​the TFT single-layer area 211, and the four corner ends of the backlight structure 300 are respectively provided with anti-collision foams 600.

[0029] It should be noted that by respectively setting anti-collision foams 600 at the four corner ends of the backlight structure 300, it is possible to prevent the backlight film material in the backlight optical element from coming apart due to falling, thereby improving the anti-fall performance of the display module and thus improving the market competitiveness of the product. Specifically, ten anti-collision foams 600 are provided, and five anti-collision foams 600 are provided on the left and right sides of the backlight structure 300, respectively. The specific number can be matched according to the size of the actual display module. Anti-collision foams 600 are provided at the four corner ends to avoid the problem of the four corner ends coming apart due to impact.

[0030] See also Figure 4As shown, in the third embodiment, two anti-collision foams 600 are provided, and the two anti-collision foams 600 are provided around the backlight structure 300, and the two anti-collision foams 600 partially correspond to the area of ​​the TFT single-layer area 211, and the two anti-collision foams 600 are partially located at the four corners of the backlight structure 300. That is, the strip-shaped anti-collision foam 600 is spread on the four sides of the backlight structure 300, so that the anti-collision foam 600 is distributed on the four corners of the backlight structure 300 and the TFT single-layer area 211, so that it not only alleviates the impact force of the mobile phone middle frame on the display module TFT single-layer area 211 when the mobile phone falls, effectively protecting the display module, but also can prevent the backlight film material from debonding and light leakage due to falling by attaching anti-collision foams 600 to the four corners of the backlight structure 300, thereby improving the anti-fall performance of the display module and improving the market competitiveness of the product.

[0031] Preferably, the width of the anti-collision foam 600 is 2.9 mm to 3.2 mm. For example, the width of the anti-collision foam 600 is 3.05 mm. When the anti-collision foam 600 is attached to the backlight structure 300, it is necessary to avoid the display screen FPC and the backlight FPC 370. The distance between the anti-collision foam 600 close to the backlight FPC 370 is 1.2 mm to 1.3 mm; the distance between the anti-collision foam 600 close to the LCD screen 200 FPC is 1.2 mm to 1.3 mm.

[0032] See also Figure 5 As shown, in one embodiment, the anti-collision foam 600 includes a double-sided adhesive layer 610, a foam body layer 620 and a release film layer 630. The double-sided adhesive layer 610, the foam body layer 620 and the release film layer 630 are stacked in sequence, and the side of the double-sided adhesive layer 610 away from the foam body layer 620 is attached to the backlight structure 300.

[0033] Preferably, the thickness of the double-sided adhesive layer 610 is 0.05 mm.

[0034] Preferably, the thickness of the foam body layer 620 is 0.45 mm to 0.55 mm. For example, the thickness of the foam body layer 620 is 0.5 mm.

[0035] Furthermore, positioning holes are provided on the release film layer 630. By providing the positioning holes, the anti-collision foam 600 can be attached by a clamp, thereby improving the accuracy of the attachment position.

[0036] See also Figure 1 As shown, specifically, the liquid crystal display screen 200 further includes an upper polarizer 230 and a lower polarizer 240 , and the upper polarizer 230 , the CF glass 220 , the TFT glass 210 and the lower polarizer 240 are stacked in sequence.

[0037] Furthermore, the backlight structure 300 includes a backlight frame 310 and an optical element. A limited cavity is provided on the backlight frame 310, the optical element is arranged in the limited cavity, and the anti-collision foam 600 is attached to the side of the backlight frame 310 away from the liquid crystal display screen 200. The optical element includes an upper light-enhancing film 320, a lower light-enhancing film 330, a diffusion film 340, a light guide plate 350 and a reflective film 360 stacked in sequence. A backlight FPC 370 is provided at the rear end of the backlight structure 300, and an LED lamp is provided on the backlight FPC 370. The light emitted by the LED lamp is reflected by the backlight film material to provide a light source for the liquid crystal display screen.

[0038] 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 drop-resistant and light-leakage-proof display module, characterized in that: include: A cover plate, a liquid crystal display screen and a backlight structure are stacked in sequence; The liquid crystal display screen includes TFT glass and CF glass stacked in sequence, the CF glass is arranged on a side close to the cover plate, the TFT glass extends outward relative to the CF glass to form a TFT single-layer area, an IC chip and a display screen FPC are bound to the TFT single-layer area, and the TFT single-layer area is covered with silicone glue; It also includes an anti-collision component, which includes anti-collision foam. The anti-collision foam is arranged on a side of the backlight structure away from the liquid crystal display screen, and the anti-collision foam corresponds to the area of ​​the TFT single-layer area.

2. The drop-resistant and light-leakage-proof display module according to claim 1, characterized in that: There are multiple anti-collision foams, each of which is arranged around the backlight structure, and one of the anti-collision foams corresponds to the area of ​​the TFT single-layer area, and the four corner ends of the backlight structure are respectively provided with anti-collision foams.

3. The drop-resistant and light-leakage-proof display module according to claim 1, characterized in that: The anti-collision foams are provided with two strips, which are arranged around the backlight structure, and the two anti-collision foams partially correspond to the area of ​​the TFT single-layer area, and the two anti-collision foams are partially located at the four corner ends of the backlight structure.

4. The drop-resistant and light-leakage-proof display module according to claim 2 or 3, characterized in that: The width of the anti-collision foam is 2.9 mm to 3.2 mm.

5. The drop-resistant and light-leakage-proof display module according to claim 2 or 3, characterized in that: The anti-collision foam includes a double-sided adhesive layer, a foam body layer and a release film layer. The double-sided adhesive layer, the foam body layer and the release film layer are stacked in sequence respectively, and a side of the double-sided adhesive layer away from the foam body layer is attached to the backlight structure.

6. The drop-resistant and light-leakage-proof display module according to claim 5, characterized in that: The thickness of the double-sided adhesive layer is 0.05 mm.

7. The drop-resistant and light-leakage-proof display module according to claim 5, characterized in that: The thickness of the foam body layer is 0.45 mm to 0.55 mm.

8. The drop-resistant and light-leakage-proof display module according to claim 5, characterized in that: The release film layer is provided with positioning holes.

9. The drop-resistant and light-leakage-proof display module according to claim 2 or 3, characterized in that: The liquid crystal display screen further includes an upper polarizer and a lower polarizer, and the upper polarizer, the CF glass, the TFT glass and the lower polarizer are stacked in sequence.

10. The drop-resistant and light-leakage-proof display module according to claim 2 or 3, characterized in that: The backlight structure includes a backlight frame and an optical element. A limiting cavity is provided on the backlight frame. The optical element is arranged in the limiting cavity. The anti-collision foam is attached to a side surface of the backlight frame away from the liquid crystal display screen.

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