OLED display screen and display device

Abstract

The utility model relates to an OLED display screen and a display device, the display screen comprises a display screen body and an FPC, the display screen body comprises an upper polaroid, an upper glass sheet and a lower glass sheet which are stacked in sequence, the back surface of the lower glass sheet is provided with a back surface coating, and the side surface of the display screen body is provided with a side surface coating; and the side surface coating and the back surface coating are connected and are high-hardness wear-resistant conductive coatings. According to the utility model, the high-hardness wear-resistant conductive coatings are respectively arranged on the back surface and the side surface of the display screen body, so that on one hand, the wear-resistant and anti-cracking performances of the display screen are improved, the durability of the display screen is improved, and the display screen is prevented from being damaged during improper operation; on the other hand, static electricity generated on the front face of the display screen body can be conducted to the back and finally conducted to the grounding end of a whole machine wire of the display device through the back of the display screen, and static electricity release is achieved.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to an OLED display screen and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) displays are current-mode semiconductor light-emitting devices based on organic materials. OLED screens require no backlight, resulting in lower power consumption and significant energy savings. Furthermore, due to their use of organic materials and multi-layered design, OLED screens are lighter and thinner.

[0003] OLED displays usually include a multi-layer structure, including a base layer, an anode, an organic layer, a conductive layer, an emission layer, a cathode, etc., and glass is one of the important materials that constitute these multi-layer structures. The glass layer may be used as a substrate, an encapsulation layer, or a protective layer, and plays an important role in carrying circuits and components, light transmission and scattering, support and fixation, and heat dissipation and protection. Since the OLED display does not have a backlight module, its back is an exposed glass layer, which cannot be protected by a backlight module like a TFT (Thin Film Transistor) display, so it is easy to be damaged when it falls. In addition, when assembling electronic devices with OLED displays, it is usually necessary to bend the display FPC to the back and then connect it to the mainboard of the whole machine. This method will cause stress after the FPC is bent, causing the binding position of the display to loosen, further causing damage to the display. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides an OLED display screen and a display device, the purpose of which is to enhance the structural strength of the display screen and improve its drop resistance and wear resistance.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] The utility model provides an OLED display screen, comprising a display screen body and an FPC, wherein the display screen body comprises an upper polarizer, an upper glass, and a lower glass stacked in sequence, the back of the lower glass being provided with a back coating, and the sides of the display screen body being provided with side coatings; the side coatings are in contact with the back coating, and both are high-hardness, wear-resistant, and conductive coatings.

[0007] Further technical solutions are:

[0008] The back coating is a DLC coating.

[0009] The thickness of the back coating layer is 1 to 3 μm.

[0010] The side coating is provided on one side surface of the lower glass, or is provided on the same side surface of the upper glass and the lower glass.

[0011] The side coating is a DLC coating.

[0012] The thickness of the side coating layer is 1 to 3 μm.

[0013] The FPC is arranged on the back side of the lower glass.

[0014] One end of the FPC is provided with a connecting portion, which is used to be connected to the binding position of the lower glass. The other end of the FPC is bent toward the back of the lower glass to form an inclined portion.

[0015] The angle between the inclined portion and the connecting portion is 10° to 15°.

[0016] The utility model also provides a display device, comprising the OLED display screen, wherein the back coating of the OLED display screen is connected to the grounding terminal of the wire of the display device.

[0017] The beneficial effects of the utility model are as follows:

[0018] This utility model applies a high-hardness, wear-resistant conductive coating to the back and sides of the display screen. This not only improves the display's resistance to wear and cracking, but also increases its durability and prevents damage from improper operation. It also conducts static electricity generated on the front of the display screen to the back, and ultimately to the ground terminal of the display device's wiring, dissipating the static electricity.

[0019] The utility model sets the FPC on the back of the lower glass. Compared with the traditional OLED display screen that sets the FPC on the upper glass and needs to be bent 180 degrees in the opposite direction to wrap around the back of the display screen, the bending angle of the FPC is greatly reduced, allowing the FPC to bend naturally, avoiding damage to the display screen caused by binding and pulling, and further improving the structural strength of the display screen.

[0020] Other features and advantages of the present invention will be described in the following description or will be understood through implementation of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the OLED display screen body according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall structure of the OLED display screen according to an embodiment of the present utility model.

[0023] Figure 3 for Figure 2 side view.

[0024] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0025] In the figure: 1. Upper polarizer; 2. Upper glass; 3. Lower glass; 31. Binding position; 41. Back coating; 42. Side coating; 5. FPC; 51. Connecting part; 52. Inclined part. DETAILED DESCRIPTION

[0026] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0027] Example 1

[0028] See also Figure 1 and Figure 2 The OLED display screen of this embodiment includes a display screen body and an FPC5. The display screen body includes an upper polarizer 1, an upper glass 2, and a lower glass 3 stacked in sequence. The back of the lower glass 3 is provided with a back coating 41, and the side of the display screen body is provided with a side coating 42. The side coating 42 is connected to the back coating 41, and both are high-hardness, wear-resistant, and conductive coatings.

[0029] This embodiment applies a high-hardness, wear-resistant conductive coating to the back and sides of the display. This improves the display's wear and crack resistance, enhancing its durability and preventing damage from improper handling. Furthermore, since the front of the display is susceptible to human static electricity, this static electricity can be transferred to the back of the display through the side and back coatings, and ultimately to the ground terminal (GND) of the display device's wiring, dissipating the static electricity.

[0030] Preferably, the back coating 41 is a DLC coating. The DLC (Diamond-Like Carbon Coating) coating is a metastable amorphous carbon film composed of different contents of SP2 and SP3 bonds. It has both high hardness and excellent friction properties. The diamond-like carbon (DLC) coating has a low friction coefficient, especially in the absence of lubricant, the friction coefficient is also very low (μ = 0.005 ~ 0.2). It also has good anti-adhesion properties, high hardness and excellent wear resistance. The carbon atoms of SP3 diamond form a continuous and solid skeleton structure in space, so it is hard and forms a regular octahedral crystal. The carbon atoms of SP2 graphite are in a planar layered structure, and the force between the layers is small, so it is very soft, can conduct electricity, and has a slippery flaky structure. Therefore, the DLC coating has certain conductive properties and is used in certain applications that require conductivity to reduce the impact of static electricity on the product.

[0031] Preferably, the thickness of the back coating layer 41 is 1 to 3 μm.

[0032] Preferably, the side coating layer 42 is provided on one side surface of the lower glass 3 , or is provided on the same side surface of both the upper glass 2 and the lower glass 3 .

[0033] Preferably, the side coating 42 is a DLC coating.

[0034] Preferably, the side coating layer 42 has a thickness of 1 to 3 μm.

[0035] Example 2

[0036] See also Figure 3 、 Figure 4 Compared with Example 1, the OLED display screen of this embodiment has the following further improvements: FPC5 is arranged on the back of the lower glass 3.

[0037] Specifically, a connecting portion 51 is provided at one end of the FPC 5 for connecting to the binding position 31 of the lower glass 3 , and the other end of the FPC 5 is bent toward the back of the lower glass 3 to form an inclined portion 52 .

[0038] As a specific embodiment, the angle α between the inclined portion 52 and the connecting portion 51 is 10° to 15°.

[0039] In a specific embodiment, the bonding point 31 of the lower glass 3 is electrically connected to the FPC 5 via metal traces, thereby connecting the FPC 5 to the display driver IC 6 (DDIC) of the lower glass 3. Protective adhesive 7 is used to fill the gaps between the connection points of the DDIC 6 and the lower glass 3, and between the DDIC 6 and the FPC 5.

[0040] This embodiment places the FPC 5 on the back of the lower glass. Compared to conventional OLED displays, which place the FPC on the upper glass and then bend it 180 degrees to wrap around the back of the display, this significantly reduces the FPC's bending angle, allowing the FPC to bend naturally. This prevents damage to the display caused by binding and pulling, thereby improving the display's structural strength. It also avoids problems such as component drop and wiring breakage caused by FPC bending stress.

[0041] It can be understood that the side of the upper glass 2 and the lower glass 3 where the side coating 42 is provided is away from the FPC 5 .

[0042] Example 3

[0043] This embodiment provides a display device, including the OLED display screen described in Embodiment 1 or 2, wherein the back coating of the OLED display screen is connected to the ground terminal of the wire of the display device.

[0044] The display device includes a touch display or viewing display device such as a smart phone, a notebook, a television, and a tablet computer.

[0045] Those skilled in the art will understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An OLED display screen, characterized in that: The display screen comprises a display screen body and an FPC (5), wherein the display screen body comprises an upper polarizer (1), an upper glass (2), and a lower glass (3) stacked in sequence, the back of the lower glass (3) being provided with a back coating (41), and the side of the display screen body being provided with a side coating (42); the side coating (42) being in contact with the back coating (41), and both being high-hardness, wear-resistant, and conductive coatings.

2. The OLED display screen according to claim 1, wherein: The back coating (41) is a DLC coating.

3. The OLED display screen according to claim 1, wherein: The thickness of the back coating layer (41) is 1 to 3 μm.

4. The OLED display screen according to claim 1, wherein: The side coating (42) is provided on one side surface of the lower glass (3), or is provided on the same side surface of the upper glass (2) and the lower glass (3) at the same time.

5. The OLED display screen according to claim 1, wherein: The side coating (42) is a DLC coating.

6. The OLED display screen according to claim 1, wherein: The thickness of the side coating (42) is 1 to 3 μm.

7. The OLED display screen according to claim 1, wherein: The FPC (5) is arranged on the back side of the lower glass (3).

8. The OLED display screen according to claim 1, wherein: One end of the FPC (5) is provided with a connecting portion (51) for connecting to the binding position (31) of the lower glass (3); the other end of the FPC (5) is bent toward the back of the lower glass (3) to form an inclined portion (52).

9. The OLED display screen according to claim 8, wherein: The angle between the inclined portion (52) and the connecting portion (51) is 10° to 15°.

10. A display device, characterized in that: The OLED display screen comprises the OLED display screen according to any one of claims 1 to 9, wherein the back coating layer (41) of the OLED display screen is connected to the ground terminal of the electric wire of the display device.

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