Display module and display device

Abstract

The application discloses a display module and a display device. The display panel comprises a display part and a first non-display part. The flexible circuit board comprises a first connecting part, a bending part and a second connecting part connected in sequence. The first connecting part is connected with the first non-display part. The bending part is arranged on one side of the first non-display part. The second connecting part is arranged on the backlight side of the display part. The cover plate covers the first non-display part and the bending part. The light shielding layer covers the first non-display part and the bending part. The polaroid is arranged on the side of the cover plate away from the display panel, and covers the first non-display part and the bending part. The polaroid, the cover plate and the light shielding layer are used to cover the first non-display part and the bending part in the embodiments of the application, so that the mechanism frame covering the first non-display part and the bending part is saved. In addition, the polaroid is arranged on the light-emitting side of the cover plate, so that the polaroid is fully attached to the cover plate, and the effect of the front visual integration of the display module is improved.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] Currently, the gate drive circuit and peripheral traces in the four edge areas of organic light-emitting diode (OLED) displays need to be covered by a mechanical frame, making it difficult to achieve narrower bezels or even bezel-less displays. This also results in poor screen integrity, poor visual effects, and complex mechanical design, making assembly difficult. Utility Model Content

[0003] This application provides a display module and display device to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a display module is provided, comprising: The display panel includes a display portion and a first non-display portion, the first non-display portion being located on one side of the display portion, and the display panel is an electroluminescent panel. A flexible circuit board includes a first connecting portion, a bending portion, and a second connecting portion connected in sequence. The first connecting portion is bonded to a first non-display portion. The bending portion is bent and disposed on one side of the first non-display portion. The second connecting portion is disposed on the backlight side of the display portion. A cover plate is disposed on the light-emitting side of the display panel, and the cover plate covers the display portion, the first non-display portion and the bent portion; A light-shielding layer is disposed on the surface of the cover plate and covers the first non-display portion and the bent portion; and A polarizer is disposed on the side of the cover plate away from the display panel, and the polarizer covers the display portion, the first non-display portion and the bent portion.

[0005] Optionally, in some embodiments of this application, the display panel further includes a second non-display portion, which is connected to the first non-display portion to form a non-display integral portion, which surrounds the outer periphery of the display portion; The cover plate, the polarizer, and the light-shielding layer all extend to cover the second non-display portion.

[0006] Optionally, in some embodiments of this application, the side of the cover plate is aligned with the side of the second non-display portion in the thickness direction of the display module.

[0007] Optionally, in some embodiments of this application, the polarizer fully covers the cover plate and extends beyond the cover plate.

[0008] Optionally, in some embodiments of this application, the boundary of the polarizer extends beyond the boundary of the cover plate by a distance greater than or equal to 0.3 mm.

[0009] Optionally, in some embodiments of this application, the display module further includes a protective portion connected to the side of the polarizer extending beyond the cover plate near the display panel, wherein a portion of the protective portion extends beyond the polarizer.

[0010] Optionally, in some embodiments of this application, the boundary of the protective portion extends beyond the boundary of the polarizer by a distance greater than or equal to 0.5 mm.

[0011] Optionally, in some embodiments of this application, the protective portion is connected to the side covering the light-shielding layer, the side of the cover plate, and the side of the second non-display portion, and the protective portion is configured to block light.

[0012] Optionally, in some embodiments of this application, both the light-shielding layer and the protective portion are black in appearance.

[0013] Optionally, in some embodiments of this application, the display module further includes a chip and an optical adhesive, the chip is bonded to the first non-display portion, the chip is located on the side of the first connection portion closer to the display portion, and the optical adhesive is connected between the display panel and the cover plate; In the thickness direction of the display module, there is a gap between the surface of the chip near the cover plate and the surface of the cover plate near the chip.

[0014] Optionally, in some embodiments of this application, the height of the gap is greater than or equal to 50 micrometers.

[0015] Optionally, in some embodiments of this application, the light-shielding layer is disposed between the cover plate and the polarizer, and the display module further includes a heat dissipation layer, a support structure layer and a printed circuit board. The heat dissipation layer is disposed on the backlight side of the display panel, the support structure layer is disposed on the side of the heat dissipation layer away from the display panel, and the printed circuit board is connected to the second connection portion and disposed on the side of the support structure layer away from the display panel.

[0016] On the other hand, this application also provides a display device, which includes a housing and a display module as described in any of the above embodiments, wherein the housing is provided with a receiving groove and the display module is disposed in the receiving groove.

[0017] In the display panel and display device of this application embodiment, the display panel includes a display portion and a first non-display portion. A flexible circuit board includes a first connecting portion, a bending portion, and a second connecting portion connected in sequence. The first connecting portion is bonded to the first non-display portion. The bending portion is bent and disposed on one side of the first non-display portion. The second connecting portion is disposed on the backlight side of the display portion. A cover plate is disposed on the light-emitting side of the display panel, covering the display portion, the first non-display portion, and the bending portion. A light-shielding layer is disposed on the surface of the cover plate, covering the first non-display portion and the bending portion. A polarizer is disposed on the side of the cover plate away from the display panel, covering the display portion, the first non-display portion, and the bending portion.

[0018] It is understandable that a polarizer, cover plate, and light-shielding layer are used to cover the first non-display part and the bent part in order to save on the frame of the mechanism covering the first non-display part and the bent part. Secondly, the polarizer is set on the light-emitting side of the cover plate, which makes it easy for the polarizer to be fully attached to the cover plate and improves the visual integration effect of the front of the display module.

[0019] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0021] Figure 1 This is a schematic diagram of the structure of the display module provided in an exemplary embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of the display device provided in an exemplary embodiment of this disclosure; Figure 3 This is a structural schematic diagram of the display device provided in an exemplary embodiment of this disclosure from another perspective.

[0022] Explanation of reference numerals in the attached figures: Display module 100; display panel 10; flexible circuit board 20; cover plate 30; light-shielding layer 40; polarizer 50; chip 60; protective part 70; optical adhesive 80; heat dissipation layer 91; support structure layer 92; printed circuit board 93; display part 1a; first non-display part 1b; second non-display part 1c; driving substrate 11; light-emitting device layer 12; encapsulation layer 13; first connecting part 21; bending part 22; second connecting part 23; gap 30a; height H1; display device 1000; housing 200; adhesive 300; receiving groove 20a; base plate 201; side wall 202. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0024] This application provides a display module 100; please refer to [link / reference]. Figure 1 , Figure 1 This is a schematic diagram of the structure of the display module 100 provided in an embodiment of this application.

[0025] In some embodiments, the display module 100 includes a display panel 10, a flexible circuit board 20, a cover plate 30, a light-shielding layer 40, and a polarizer 50.

[0026] The display panel 10 includes a display portion 1a and a first non-display portion 1b, the first non-display portion 1b being located on one side of the display portion 1a.

[0027] Optionally, the display panel 10 is an electroluminescent panel. For example, it can be an organic light-emitting diode (OLED) panel, a quantum dot (QD) panel, or an inorganic light-emitting diode (LED) panel. The following description uses an organic light-emitting diode (OLED) panel as an example, but it is not limited to this.

[0028] Optionally, the display panel 10 includes a driving substrate 11, a light-emitting device layer 12 disposed on the driving substrate 11, and an encapsulation layer 13 disposed on the light-emitting device layer 12.

[0029] The light-emitting device layer 12 includes multiple light-emitting devices configured to display images. Therefore, the area in the display panel 10 corresponding to the area where the light-emitting devices are located is the display portion 1a. The area in the display panel 10 that does not display images is the non-display portion.

[0030] Optionally, the light-emitting device layer 12 includes a light-emitting functional layer and a cathode, wherein the light-emitting functional layer includes the light-emitting layer.

[0031] Optionally, the non-display portion includes a first non-display portion 1b, which is located in the lower border area of ​​the display panel 10.

[0032] The first non-display portion 1b includes fan-out traces and bonding pads, the bonding pads being configured to bond to the flexible circuit board 20 and the chip 60.

[0033] The flexible circuit board 20 includes a first connecting portion 21, a bending portion 22, and a second connecting portion 23 connected in sequence. The first connecting portion 21 is bonded to the first non-display portion 1b, the bending portion 22 is bent and disposed on one side of the first non-display portion 1b, and the second connecting portion 23 is disposed on the backlight side of the display portion 1a.

[0034] The cover plate 30 is disposed on the light-emitting side of the display panel 10. The cover plate 30 covers the display portion 1a, the first non-display portion 1b, and the bent portion 22.

[0035] A light-shielding layer 40 is disposed on the surface of the cover plate 30 and covers the first non-display portion 1b and the bent portion 22.

[0036] Optionally, the light-shielding layer 40 can be disposed on the surface of the cover plate 30 away from the display panel 10, but is not limited thereto. For example, the light-shielding layer 40 can also be disposed on the surface of the cover plate 30 closer to the display panel 10.

[0037] In some embodiments, the light-shielding layer 40 may be formed on the cover plate 30 by inkjet printing. The material of the light-shielding layer 40 may be black ink.

[0038] In some embodiments, the light-shielding layer 40 may also be formed on the cover plate 30 by other means, such as photolithography, coating, transfer printing, etc. The material of the light-shielding layer 40 may be a material with light-shielding properties, such as black photoresist, light-shielding metal, or a stacked structure of metal and metal oxide, etc.

[0039] The polarizer 50 is disposed on the side of the cover plate 30 away from the display panel 10, and the polarizer 50 covers the display portion 1a, the first non-display portion 1b and the bent portion 22.

[0040] It is understood that the display module 100 of this application embodiment uses a polarizer 50, a cover plate 30 and a light-shielding layer 40 to cover the first non-display portion 1b and the bent portion 22, so as to save the frame of the mechanism covering the first non-display portion 1b and the bent portion 22. Secondly, the polarizer 50 is set on the light-emitting side of the cover plate 30, so that the polarizer 50 can be fully attached to the cover plate 30, thereby improving the visual integration effect of the front of the display module 100.

[0041] Optionally, in some embodiments of this application, the display panel 10 further includes a second non-display portion 1c, which is connected to the first non-display portion 1b to form a non-display integral portion, which surrounds the outer periphery of the display portion 1a.

[0042] The cover plate 30, polarizer 50 and light-shielding layer 40 all extend to cover the second non-display portion 1c.

[0043] It is understandable that since the cover plate 30, polarizer 50 and light-shielding layer 40 cover the entire non-display area, the structural frame covering the non-display area of ​​the display panel 10 can be saved, so as to achieve a frameless design on all four sides.

[0044] Optionally, the pattern shape of the non-display portion can be determined according to the shape of the actual product. For example, if the display portion 1a is rectangular, then the non-display portion forming a rectangular ring structure with the first non-display portion 1b and the second non-display portion 1c is disposed on the outer periphery of the display portion 1a. In this case, the non-display portion is divided into an upper border, a lower border, a left border, and a right border. The first non-display portion 1b is the lower border, and the second non-display portion 1c is formed by connecting the upper border, the left border, and the right border.

[0045] Optionally, in some embodiments of this application, the side of the cover plate 30 is aligned with the side of the second non-display portion 1c in the thickness direction of the display module 100.

[0046] Understandably, the side of the cover plate 30 is aligned with the side of the second non-display portion 1c to reduce installation interference.

[0047] Optionally, in some embodiments of this application, the polarizer 50 fully covers the cover plate 30 and extends beyond the cover plate 30.

[0048] Understandably, the polarizer 50 is super-adhesive to the cover plate 30, which can overcome the adhesion tolerance of the polarizer 50, so that the surface of the display module 100 has no step difference, thus improving the integrated visual effect of the front.

[0049] Optionally, in some embodiments of this application, the distance L1 by which the boundary of the polarizer 50 extends beyond the boundary of the cover plate 30 is greater than or equal to 0.3 mm. This setting can not only overcome the attachment tolerance of the polarizer 50, but also reduce the risk of collision with the cover plate 30 when installing the display module 100.

[0050] Optionally, the distance L1 by which the boundary of the polarizer 50 extends beyond the boundary of the cover plate 30 is 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, or 0.7 mm.

[0051] Optionally, in some embodiments of this application, the display module 100 further includes a protective portion 70, which is connected to the side of the polarizer 50 that extends beyond the cover plate 30 and is close to the display panel 10, with a portion of the protective portion 70 extending beyond the polarizer 50.

[0052] It is understandable that the protective part 70 extends beyond the polarizer 50 to reduce the risk of collision with the polarizer 50 and the cover plate 30 when installing the display module 100, thereby reducing the risk of breakage during installation.

[0053] Optionally, in some embodiments of this application, the boundary of the protective part 70 extends beyond the boundary L2 of the polarizer 50 by a distance greater than or equal to 0.5 mm, so as to better protect the polarizer 50 and the cover plate 30.

[0054] Optionally, the distance by which the boundary of the protective part 70 extends beyond the boundary L2 of the polarizer 50 can be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm, etc.

[0055] Optionally, in some embodiments of this application, the protective part 70 is connected to the side of the cover plate 30, the side of the light-shielding layer 40, and the side of the second non-display part 1c, respectively, and the protective part 70 is configured to block light.

[0056] Optionally, the protective portion 70 is continuously connected to the side of the light-shielding layer 40, the side of the cover plate 30, and the side of the second non-display portion 1c to improve the encapsulation effect and reduce the risk of external moisture entering the display panel 10. Secondly, the protective portion 70 is configured to shield light, which can reduce the risk of edge light leakage.

[0057] Optionally, in some embodiments of this application, both the light-shielding layer 40 and the protective portion 70 are black.

[0058] Understandably, both the light-shielding layer 40 and the protective part 70 are black, making the front appearance of the display module 100 a unified black, thus improving the visual integration effect.

[0059] Optionally, the protective part 70 is made of adhesive material, and the protective part 70 can be formed by dispensing or coating.

[0060] Optionally, in some embodiments of this application, the display module 100 further includes a chip 60 and an optical adhesive 80. The chip 60 is bonded to the first non-display portion 1b. The chip 60 is located on the side of the first connecting portion 21 near the display portion 1a, and the optical adhesive 80 connects the display panel 10 and the cover plate 30.

[0061] In the thickness direction of the display module 100, there is a gap 30a between the surface of the chip 60 near the cover plate 30 and the surface of the cover plate 30 near the chip 60.

[0062] Understandably, during the application of the cover plate 30, it needs to be pressed down to adhere it to the display panel 10. During this pressing process, the optical adhesive 80 and encapsulation layer 13 are compressed, causing the cover plate 30 to shift downwards and potentially interfere with the chip 60. Therefore, setting a gap 30a reduces the risk of interference with the chip 60 during the application of the cover plate 30.

[0063] Optionally, in some embodiments of this application, the height H1 of the gap 30a is greater than or equal to 50 micrometers.

[0064] Understandably, the setting of the gap 30a is affected by the magnitude of the downward pressure and the compression of the optical adhesive 80. The greater the compression of the optical adhesive 80, the higher the required height H1 of the gap 30a. Therefore, the height H1 of the gap 30a is set to be greater than or equal to 50 micrometers to avoid the risk of interference between the chip 60 and the cover plate 30 being pressed down.

[0065] Optionally, the height H1 of the gap 30a can be 50 micrometers, 51 micrometers, 52 micrometers, 53 micrometers, 54 micrometers, 55 micrometers, 56 micrometers, 57 micrometers, 58 micrometers, 59 micrometers, 60 micrometers, 61 micrometers, 62 micrometers, 63 micrometers, 64 micrometers, 65 micrometers, 66 micrometers, 67 micrometers, 68 micrometers, 69 micrometers, 70 micrometers, 71 micrometers, 72 micrometers, 73 micrometers, 74 micrometers, 75 micrometers, 76 micrometers, 77 micrometers, 78 micrometers, 79 micrometers, 80 micrometers, 81 micrometers, 82 micrometers, 83 micrometers, 84 micrometers, 85 micrometers, 86 micrometers, 87 micrometers, 88 micrometers, 89 micrometers, 90 micrometers, 91 micrometers, 92 micrometers, 93 micrometers, 94 micrometers, 95 micrometers, 96 micrometers, 97 micrometers, 98 micrometers, 99 micrometers, or 100 micrometers.

[0066] Optionally, in some embodiments of this application, the light-shielding layer 40 is disposed between the cover plate 30 and the polarizer 50. Compared to the light-shielding layer 40 being disposed on the side of the cover plate 30 away from the polarizer 50, this can reduce the risk of interference with the chip 60.

[0067] Optionally, in some embodiments of this application, the display module 100 further includes a heat dissipation layer 91, a support structure layer 92, and a printed circuit board 93. The heat dissipation layer 91 is disposed on the backlight side of the display panel 10, the support structure layer 92 is disposed on the side of the heat dissipation layer 91 away from the display panel 10, and the printed circuit board 93 is connected to the second connection portion 23 and is disposed on the side of the support structure layer 92 away from the display panel 10.

[0068] Alternatively, the heat dissipation layer 91 can be a heat dissipation metal, such as aluminum.

[0069] Please refer to Figure 2and Figure 3 This application also provides a display device 1000, which includes a housing 200 and a display module 100 as described in any of the above embodiments. The housing 200 is provided with a receiving groove 20a, and the display module 100 is disposed in the receiving groove 20a.

[0070] It should be noted that the structure of the display module 100 of the display device 1000 provided in this application embodiment is similar to or the same as the structure of the display module 100 provided in this application embodiment. For details, please refer to... Figure 1 Therefore, the relevant explanations will not be repeated here.

[0071] Optionally, the display device 1000 can be at least one of the following: smartphone, tablet, mobile phone, video phone, e-book reader, desktop computer, laptop, netbook, workstation, server, personal digital assistant, portable media player, MP3 player, television, mobile medical device, camera, game console, digital camera, car navigation system, in-vehicle display, electronic billboard, ATM, or wearable device, VR device, AR device.

[0072] Optionally, the housing 200 includes a base plate 201 and a side wall 202, the side wall 202 being disposed around the periphery of the base plate 201, and the side wall 202 and the base plate 201 being connected to form a receiving groove 20a.

[0073] The sidewalls 202 are located on the outer perimeter of the display module 100. The display device 1000 does not need to have a bezel covering the non-display portion of the display module 100, thus achieving a borderless design on all four sides.

[0074] Optionally, the display module 100 is fixedly connected to the base plate 201 by adhesive 300.

[0075] Optionally, the housing 200 can be made of metal, plastic, or other materials.

[0076] In the display device 1000 of this application embodiment, the display panel 10 includes a display portion 1a and a first non-display portion 1b. The flexible circuit board 20 includes a first connecting portion 21, a bending portion 22, and a second connecting portion 23 connected sequentially. The first connecting portion 21 is bonded to the first non-display portion 1b, the bending portion 22 is bent and disposed on one side of the first non-display portion 1b, and the second connecting portion 23 is disposed on the backlight side of the display portion 1a. A cover plate 30 is disposed on the light-emitting side of the display panel 10, covering the display portion 1a, the first non-display portion 1b, and the bending portion 22. A light-shielding layer 40 is disposed on the surface of the cover plate 30, covering the first non-display portion 1b and the bending portion 22. A polarizer 50 is disposed on the side of the cover plate 30 away from the display panel 10, covering the display portion 1a, the first non-display portion 1b, and the bending portion 22.

[0077] It is understandable that the polarizer 50, cover plate 30 and light-shielding layer 40 are used to cover the first non-display portion 1b and the bent portion 22 in order to save the frame of the mechanism covering the first non-display portion 1b and the bent portion 22. Secondly, the polarizer 50 is set on the light-emitting side of the cover plate 30 so that the polarizer 50 can be fully attached to the cover plate 30, thereby improving the visual integration effect of the front of the display module 100.

[0078] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0080] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0081] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A display module, characterized in that, include: The display panel includes a display portion and a first non-display portion, the first non-display portion being located on one side of the display portion, and the display panel being an electroluminescent panel; A flexible circuit board includes a first connecting portion, a bending portion, and a second connecting portion connected in sequence. The first connecting portion is bonded to a first non-display portion. The bending portion is bent and disposed on one side of the first non-display portion. The second connecting portion is disposed on the backlight side of the display portion. A cover plate is disposed on the light-emitting side of the display panel, and the cover plate covers the display portion, the first non-display portion and the bent portion; A light-shielding layer is disposed on the surface of the cover plate and covers the first non-display portion and the bent portion; as well as A polarizer is disposed on the side of the cover plate away from the display panel, and the polarizer covers the display portion, the first non-display portion and the bent portion.

2. The display module according to claim 1, characterized in that, The display panel further includes a second non-display portion, which is connected to the first non-display portion to form a non-display integral portion, which surrounds the outer periphery of the display portion. The cover plate, the polarizer, and the light-shielding layer all extend to cover the second non-display portion.

3. The display module according to claim 2, characterized in that, In the thickness direction of the display module, the side of the cover plate is aligned with the side of the second non-display portion.

4. The display module according to claim 2, characterized in that, The polarizer completely covers the cover plate and extends beyond the cover plate.

5. The display module according to claim 4, characterized in that, The boundary of the polarizer extends beyond the boundary of the cover plate by a distance greater than or equal to 0.3 mm.

6. The display module according to claim 4, characterized in that, The display module also includes a protective part, which is connected to the side of the polarizer that extends beyond the cover plate and is close to the display panel, with a portion of the protective part extending beyond the polarizer.

7. The display module according to claim 6, characterized in that, The boundary of the protective part extends beyond the boundary of the polarizer by a distance greater than or equal to 0.5 mm.

8. The display module according to claim 6, characterized in that, The protective part is connected to the side covering the light-shielding layer, the side of the cover plate, and the side of the second non-display portion, and the protective part is configured to block light.

9. The display module according to claim 8, characterized in that, Both the light-shielding layer and the protective layer are black in appearance.

10. The display module according to any one of claims 1-9, characterized in that, The display module further includes a chip and an optical adhesive. The chip is bonded to the first non-display portion and is located on the side of the first connection portion closer to the display portion. The optical adhesive is connected between the display panel and the cover plate. In the thickness direction of the display module, there is a gap between the surface of the chip near the cover plate and the surface of the cover plate near the chip.

11. The display module according to claim 10, characterized in that, The height of the gap is greater than or equal to 50 micrometers.

12. The display module according to any one of claims 1-9, characterized in that, The light-shielding layer is disposed between the cover plate and the polarizer. The display module also includes a heat dissipation layer, a support structure layer and a printed circuit board. The heat dissipation layer is disposed on the backlight side of the display panel. The support structure layer is disposed on the side of the heat dissipation layer away from the display panel. The printed circuit board is connected to the second connection part and is disposed on the side of the support structure layer away from the display panel.

13. A display device, characterized in that, The device includes a housing and a display module as described in any one of claims 1-12, wherein the housing is provided with a receiving groove and the display module is disposed within the receiving groove.

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