Display module and terminal equipment

Abstract

The utility model discloses a display module and terminal equipment, and belongs to the technical field of terminals. The display module comprises a display panel, a cover plate and a metal supporting plate. In the process of mounting the metal supporting plate and the display panel together, the marking part can be used as a positioning reference to position the metal supporting plate, so that the metal supporting plate is mounted on the display panel. Compared with the mode that the outer contour of the cover plate serves as the positioning reference to mount the metal supporting plate, the mode that the marking part serves as the positioning reference to mount the metal supporting plate is adopted, and the fitting tolerance between the metal supporting plate and the display panel can be reduced. In this way, even if the distance between the edge of the metal supporting plate and the edge of the display panel is small in the design stage, it can be guaranteed that the edge of the display panel cannot be exposed through the metal supporting plate. The distance between the edge of the metal supporting plate and the edge of the display panel is small, so that the width of the shading area of the cover plate is small, and the width of the whole frame of the display module is small.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a display module and a terminal device. Background Art

[0002] With the continuous development of terminal technology, terminal devices such as mobile phones, computers, and tablet computers have become widely popular and have become an indispensable part of people's work and life.

[0003] The terminal device may include a protective cover, a display panel, and a steel sheet. The protective cover is located on the display panel's display surface to protect it, while the steel sheet is located on the back of the display panel to support the screen. Currently, during the steel sheet placement process, the protective cover is typically used as a positioning reference to ensure placement accuracy.

[0004] However, in the process of mounting the steel sheet using the protective cover as a positioning reference, the mounting accuracy of the steel sheet is poor. Utility Model Content

[0005] The embodiments of the present application provide a display module and terminal device. This can solve the problem of large lamination tolerance between steel sheets and display panels in the prior art. The technical solution is as follows:

[0006] In one aspect, a display module is provided, comprising: a display panel, a cover plate, a metal support plate, and a marking portion;

[0007] The cover plate is located on the display side of the display panel;

[0008] The metal support plate is located on a side of the display panel away from the cover plate, and a first groove is formed at an edge of the metal support plate;

[0009] The marking portion is located on a side of the display panel facing away from the cover plate, and an orthographic projection of the marking portion on the display panel is located within an orthographic projection of the first groove on the display panel.

[0010] Optionally, the display panel includes: a substrate, a light-emitting functional layer and a support layer, wherein the light-emitting functional layer is located on a side of the substrate facing the cover plate, and the support layer is located on a side of the substrate facing away from the light-emitting functional layer;

[0011] The marking portion is distributed on a side of the substrate away from the light-emitting functional layer, or the marking portion is distributed on the supporting layer.

[0012] Optionally, when the marking portion is arranged on a side of the substrate away from the light-emitting functional layer, an edge of the support layer has a second groove communicating with the first groove;

[0013] The orthographic projection of the marking portion on the cover plate is located within the orthographic projection of the second groove on the cover plate.

[0014] Optionally, the marking portion includes: a groove provided on a side of the substrate away from the light-emitting functional layer.

[0015] Optionally, in the case where the marking portion is distributed on the supporting layer, the marking portion includes: a hollow groove penetrating the supporting layer.

[0016] Optionally, an outer surface of the metal support plate has an opening connected to the first groove.

[0017] Optionally, the display module further includes: a first conductive adhesive portion and a second conductive adhesive portion connected to each other, the first conductive adhesive portion is located in the first groove and contacts the display panel, and the second conductive adhesive portion is located outside the first groove and contacts the metal support plate.

[0018] Optionally, the marking portion includes: a first extending portion and a second extending portion, and an extending direction of the first extending portion intersects with an extending direction of the second extending portion.

[0019] Optionally, the display module further comprises: a driving component bound and connected to the display panel, wherein the driving component is distributed on a side of the metal support plate away from the cover plate;

[0020] There are two first slots at the edge of the metal support plate, and the driving assembly is distributed between the two first slots.

[0021] On the other hand, a terminal device is also provided, including: a casing and a display module, the display module is any of the display modules described above, the display module is fixed in the casing, and the metal support plate in the display module is fixedly connected to the casing.

[0022] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0023] In the process of attaching the metal support plate to the display panel, the metal support plate can be positioned using the marking portion as a positioning reference so that the metal support plate is attached to the side of the display panel facing away from the cover plate. Here, compared with attaching the metal support plate using the outer contour of the cover plate as a positioning reference, the method of attaching the metal support plate using the marking portion as a positioning reference can reduce the fitting tolerance between the metal support plate and the display panel, thereby reducing the overall size of the cover plate while ensuring a certain distance between the outer contour of the metal support plate and the outer contour of the cover plate. This makes the overall size of the display module smaller, and further makes the overall size of the terminal device equipped with the display module smaller, thereby improving the screen-to-body ratio of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 is a top view of a display module provided in an embodiment of the present application;

[0026] Figure 2 yes Figure 1 A cross-sectional view of the display module taken at AA' is shown;

[0027] Figure 3 is a top view of another display module provided in an embodiment of the present application;

[0028] Figure 4 yes Figure 3 A cross-sectional view of the display module taken at BB' is shown;

[0029] Figure 5 is a top view of another display module provided in an embodiment of the present application;

[0030] Figure 6 yes Figure 5 A cross-sectional view of the display module at CC' is shown;

[0031] Figure 7 is a top view of another display module provided in an embodiment of the present application;

[0032] Figure 8 yes Figure 7 A cross-sectional view of the display module at DD' is shown;

[0033] Figure 9 is a top view of a display module provided in another embodiment of the present application;

[0034] Figure 10 This is a cross-sectional view of a display module provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0036] In the prior art, a display module may include a display panel, a cover plate, and a metal support plate. The cover plate may be located on the display side of the display panel to protect the display panel, and the metal support plate may be located on the side of the display panel facing away from the cover plate to support the display panel. The outer contour of the display panel may be located within the outer contour of the metal support plate, so that the metal support plate can protect the display panel and prevent damage to the outer edges of the display panel.

[0037] Currently, when attaching a metal support plate to a display panel, the outer contour of the cover plate is typically used as a positioning reference. When attaching the metal support plate using the cover plate's outer contour as a positioning reference, the fitting tolerance between the metal support plate and the display panel is the sum of the metal support plate's outer shape tolerance, the cover plate's outer shape tolerance, and the alignment tolerance between the metal support plate and the cover plate. This results in a large fitting tolerance between the metal support plate and the display panel, which in turn leads to large mounting errors in the metal support plate.

[0038] For example, assuming that the outer shape tolerance of the metal support plate can be between 0.25 mm and 0.3 mm, the outer shape tolerance of the cover plate can be between 0.07 mm and 0.1 mm, and the alignment tolerance between the metal support plate and the cover plate can be 0.2 mm, then the fitting tolerance between the metal support plate and the display panel can be 0.5 mm.

[0039] Thus, if the distance between the edge of the metal support plate and the edge of the display panel is set to less than 0.5 mm during the design phase, there is a risk that the edge of the display panel will be exposed through the metal support plate after the metal support plate and the display panel are actually assembled, making the outer contour of the display panel more susceptible to damage.

[0040] If the distance between the edge of the metal support plate and the edge of the display panel is set to be greater than or equal to 0.5 mm during the design phase, then after the metal support plate and display panel are actually assembled, although the edge of the display panel will no longer be exposed through the metal support plate, the width of the light-shielding area in the cover plate will need to be increased to ensure that the light-shielding area of ​​the cover plate can cover the edge of the metal support plate. If the width of the light-shielding area in the cover plate is too wide, the overall bezel width of the display module will be larger, resulting in a lower screen-to-body ratio of the display module.

[0041] The present application embodiment provides a display module, please refer to Figure 1 and Figure 2 , Figure 1 is a top view of a display module provided in an embodiment of the present application, Figure 2 yes Figure 1 The display module is shown in a cross-sectional view taken along line AA′. The display module may include a display panel 100 , a cover plate 200 , a metal support plate 300 , and a marking portion 400 .

[0042] The cover plate 200 in the display module may be located on the display side of the display panel 100. Here, the orthographic projection of the display panel 100 on the cover plate 200 may be located within the area enclosed by the outer contour of the cover plate 200 to ensure that the cover plate 200 can protect the display panel 100.

[0043] The metal support plate 300 in the display module can be located on the side of the display panel 100 facing away from the cover plate 200. Here, the orthographic projection of the display panel 100 on the metal support plate 300 can also be located within the area enclosed by the outer contour of the cover plate 200, and the orthographic projection of the metal support plate 300 on the cover plate 200 can also be located within the area enclosed by the outer contour of the cover plate 200. In this way, the metal support plate 300 can support and protect the display panel 100 at the same time.

[0044] In the present application, the edge of the metal support plate 300 in the display module may have a first slot S1. The marking portion 400 in the display module may be located on the side of the display panel 100 facing away from the cover plate 200, and the orthographic projection of the marking portion 400 on the display panel 100 may be located within the orthographic projection of the first slot S1 on the display panel 100. In this way, the marking portion 400 can be exposed through the first slot S1. In this way, during the process of attaching the metal support plate 300 to the display panel 100, the metal support plate 300 can be positioned using the marking portion 400 as a positioning reference so that the metal support plate 300 is attached to the side of the display panel 100 facing away from the cover plate 200.

[0045] Thus, compared to attaching the metal support plate 300 using the outer contour of the cover plate 200 as a positioning reference, attaching the metal support plate 300 using the marking portion 400 as a positioning reference can reduce the fitting tolerance between the metal support plate 300 and the display panel 100. Thus, even if the distance between the edge of the metal support plate 300 and the edge of the display panel 100 is reduced during the design phase, it is possible to ensure that the edge of the display panel 100 does not protrude through the metal support plate 300. Furthermore, the reduced distance between the edge of the metal support plate 300 and the edge of the display panel 100 reduces the width of the light-shielding area of ​​the cover plate 200, thereby reducing the width of the overall frame of the display module, thereby increasing the screen-to-body ratio of the display module.

[0046] It should be noted that during the process of attaching the metal support plate 300 to the display panel 100 using the marking portion 400 as a positioning reference, the fitting tolerance between the metal support plate 300 and the display panel 100 only includes: the external tolerance of the metal support plate 300 and the alignment tolerance between the metal support plate 300 and the marking portion 400. For example, assuming that the external tolerance of the metal support plate 300 can be between 0.25 mm and 0.3 mm, and the alignment tolerance between the metal support plate 300 and the marking portion 400 can be 0.1 mm, the fitting tolerance between the metal support plate 300 and the display panel 100 can be 0.3 mm. Compared to attaching the metal support plate 300 to the display panel 100 using the cover plate 200 as a positioning reference, attaching the metal support plate 300 to the display panel 100 using the marking portion 400 as a positioning reference can reduce the fitting tolerance between the metal support plate 300 and the display panel 100.

[0047] It should also be noted that during the process of attaching the metal support plate 300 to the display panel 100 using the cover plate 200 as a positioning reference, the alignment tolerance between the cover plate 200 and the metal support plate 300 is relatively large due to the large distance between the outer contours of the cover plate 200 and the outer contours of the metal support plate 300. For example, the alignment tolerance between the cover plate 200 and the metal support plate 300 can be 0.2 mm. During the process of attaching the metal support plate 300 to the display panel 100 using the marking portion 400 as a positioning reference, the alignment tolerance between the metal support plate 300 and the marking portion 400 is relatively small due to the small distance between the outer contours of the marking portion 400 and the metal support plate 300. For example, the alignment tolerance between the metal support plate 300 and the marking portion 400 can be 0.1 mm.

[0048] In summary, the embodiment of the present application provides a display module, comprising: a display panel, a cover plate and a metal support plate. In the process of mounting the metal support plate and the display panel together, the metal support plate can be positioned using the marking portion as a positioning reference, so that the metal support plate is mounted on the side of the display panel facing away from the cover plate. Here, compared with mounting the metal support plate using the outer contour of the cover plate as a positioning reference, the method of mounting the metal support plate using the marking portion as a positioning reference can reduce the fitting tolerance between the metal support plate and the display panel. In this way, even if the distance between the edge of the metal support plate and the edge of the display panel is made smaller during the design stage, it can be ensured that the edge of the display panel will not be exposed through the metal support plate. And the smaller distance between the edge of the metal support plate and the edge of the display panel makes the width of the shading area of ​​the cover plate smaller, thereby making the width of the overall frame of the display module smaller, thereby improving the screen-to-body ratio of the display module.

[0049] Optional, please refer to Figure 3 and Figure 4 , Figure 3 is a top view of another display module provided in an embodiment of the present application. Figure 4 yes Figure 3 A cross-sectional view of the display module at point BB' is shown. The display panel 100 in the display module may include a substrate 101, a light-emitting functional layer 102, and a support layer 103. The light-emitting functional layer 102 in the display panel 100 may be located on the side of the substrate 101 facing the cover plate 200, and the support layer 103 may be located on the side of the substrate 101 facing away from the light-emitting functional layer 102. Here, the light-emitting functional layer 102 may be used to emit light, and the support layer 103 may be used to support the light-emitting functional layer 102.

[0050] In the present application, the marking portion 400 in the display module may be a trace made by an etching process.

[0051] The position of the marking portion 400 on the display panel 100 can be one of the following two situations:

[0052] In the first case, if Figure 3 and Figure 4 As shown, the marking portion 400 in the display module can be distributed on the supporting layer 103 in the display panel 100. In addition, when the marking portion 400 is distributed on the supporting layer 103 in the display panel 100, since the thickness of the supporting layer 103 in the display panel 100 is relatively thin, the supporting layer 103 may be penetrated during the process of manufacturing the marking portion 400 on the supporting layer 103 using an etching process. Therefore, the marking portion 400 can include: a hollow groove penetrating the supporting layer 103.

[0053] In the second case, refer to Figure 5 and Figure 6 , Figure 5 is a top view of another display module provided in an embodiment of the present application. Figure 6 yes Figure 5 The cross-sectional view of the display module at C-C' is shown. The marking portion 400 in the display module can be distributed on the side of the substrate 101 in the display panel 100 that is away from the light-emitting functional layer 102. And in the case where the marking portion 400 is distributed on the side of the substrate 101 that is away from the light-emitting functional layer 102, the edge position of the support layer 103 can have a second groove connected to the first groove S1. And the orthographic projection of the marking portion 400 on the cover plate 200 can be located within the orthographic projection of the second groove on the cover plate 200. In this way, the support layer 103 will not block the marking portion 400, and the marking portion 400 can be exposed through the second groove of the support layer 103 and the first groove S1 of the metal support plate 300.

[0054] In the case where the marking portion 400 is distributed on the side of the substrate 101 away from the light-emitting functional layer 102, since the thickness of the substrate 101 in the display panel 100 is relatively large, the substrate 101 will not be penetrated during the process of manufacturing the marking portion 400 on the substrate 101 using an etching process. For this reason, the marking portion 400 may include: a groove arranged on the side of the substrate 101 away from the light-emitting functional layer 102.

[0055] In this application, if Figure 3 and Figure 5 As shown, the outer surface of the metal support plate 300 may have an opening O communicating with the first slot S1 , that is, the first slot S1 of the metal support plate 300 may directly penetrate the outer contour of the metal support plate 300 .

[0056] Optionally, the display module may further include a first conductive adhesive portion and a second conductive adhesive portion connected to each other. The first conductive adhesive portion may be located within the first slot S1 of the metal support plate 300 and may contact the display panel 100, and the second conductive adhesive portion may be located outside the first slot S1 and may contact the metal support plate 300. In this manner, static electricity generated by the display panel 100 can be conducted to the metal support plate 300 via the connected first and second conductive adhesive portions. Furthermore, the metal support plate 300 can be connected to a ground wire, thereby conducting away static electricity generated by the display panel 100 and ensuring normal operation of the display panel 100.

[0057] Optional, please refer to Figure 7 and Figure 8 , Figure 7 is a top view of another display module provided in an embodiment of the present application. Figure 8 yes Figure 7 The display module is shown in a cross-sectional view taken along line D-D'. The display module may further include a drive assembly 500 coupled to the display panel 100. The drive assembly 500 in the display module may be located on a side of the metal support plate 300 facing away from the cover plate 200. The drive assembly 500 in the display module may be used to control the display surface of the display panel 100 to display an image.

[0058] It should be noted that if Figure 7 and Figure 8As shown, the driving component 500 in the display module may include: a circuit board 501, multiple chip-on-films 503, and multiple driver chips 502. The multiple chip-on-films 503 in the driving component 500 may correspond one-to-one to the multiple driver chips 502. One end of the chip-on-film 503 in the driving component 500 may be connected to the non-display portion of the display panel 100, and the other end of the chip-on-film 503 in the driving component 500 may extend to the back of the display panel 100 and be electrically connected to the corresponding driver chip 502. The other ends of the multiple chip-on-films 503 in the driving component 500 may all be electrically connected to the circuit board 501. In this way, the circuit board 501 and the multiple driver chips 502 can control the display portion of the display panel 100 to display images through the multiple chip-on-films 503.

[0059] Optional, such as Figure 7 As shown, the metal support plate 300 may have two first slots S1 at its edge, and the driver assembly 500 may be located between the two first slots S1. Here, the location where the driver assembly 500 is located in the display panel 100 generates a lot of static electricity. To this end, the driver assembly 500 may be located between the two first slots S1 of the metal support plate 300 to conduct away the static electricity generated by the display panel 100 through the conductive adhesive filled in the two first slots S1.

[0060] In this application, please refer to Figure 9 , Figure 9 This is a top view of a display module provided in another embodiment of the present application. The marking portion 400 in the display module may include a first extension portion 401 and a second extension portion 402. The extension direction of the first extension portion 401 in the marking portion 400 may intersect with the extension direction of the second extension portion 402. For example, the first extension portion 401 and the second extension portion 402 in the marking portion 400 may form a T-shape, an X-shape, or a cross-shape. This allows the first extension portion 401 and the second extension portion 402 to precisely position the metal support plate 300.

[0061] In this application, if Figure 4 and Figure 6 As shown, the display module may further include a foam layer 600. The foam layer 600 in the display module may be located between the metal support plate 300 and the support layer 103 in the display panel 100. The metal support plate 300 may be attached to the display panel 100 via the foam layer 600.

[0062] And as Figure 4As shown, when the marking portion 400 is distributed on the support layer 103 in the display panel 100, in order to ensure that the marking portion 400 located on the display panel 100 can be exposed through the first slot S1 of the metal support plate 300, the orthographic projection of the foam layer 600 on the support layer 103 can be located within the area surrounded by the outer contour of the support layer 103, so as to avoid the foam layer 600 from blocking the marking portion 400 located on the support layer 103. Figure 6 As shown, when the marking portion 400 is distributed on the side of the substrate 101 away from the light-emitting functional layer 102, the positive projection of the foam layer 600 on the substrate 101 can be located within the area enclosed by the outer contour of the substrate 101 to avoid the foam layer 600 blocking the marking portion 400 located on the substrate 101.

[0063] In this application, if Figure 10 As shown, Figure 10 FIG2 is a cross-sectional view of a display module provided in an embodiment of the present application. The display module may further include a polarizer 700 and an optical adhesive layer 800. The polarizer 700 in the display module may be located between the display panel 100 and the cover plate 200. The polarizer 700 can reduce the reflectivity of the display panel 100 to ambient light, thereby ensuring that the image displayed by the display panel 100 is of good quality.

[0064] The optical adhesive layer 800 in the display module can be located between the polarizer 700 and the cover plate 200. The optical adhesive layer 800 can be used to achieve adhesion between the cover plate 200 and the polarizer 700. The optical adhesive layer 800 is typically made of transparent glue, which ensures that light emitted by the display panel 100 can pass through the optical adhesive layer 800 and the cover plate 200 before being emitted.

[0065] In summary, the embodiment of the present application provides a display module, comprising: a display panel, a cover plate and a metal support plate. In the process of mounting the metal support plate and the display panel together, the marking portion can be used as a positioning reference to position the metal support plate, so that the metal support plate can be mounted on the side of the display panel away from the cover plate. Here, compared with mounting the metal support plate using the outer contour of the cover plate as a positioning reference, the method of mounting the metal support plate using the marking portion as a positioning reference can reduce the fitting tolerance between the metal support plate and the display panel. In this way, even if the distance between the edge of the metal support plate and the edge of the display panel is made smaller during the design stage, it can be ensured that the edge of the display panel will not be exposed through the metal support plate. And the smaller distance between the edge of the metal support plate and the edge of the display panel makes the width of the shading area of ​​the cover plate smaller, thereby making the width of the overall frame of the display module smaller, thereby improving the screen-to-body ratio of the display module.

[0066] The present application also provides a terminal device, which may include a housing and a display module. The display module in the terminal device may be any of the display modules described above, and the display module in the terminal device may be fixed within the housing. A metal support plate in the display module may be fixedly connected to the housing. Here, the metal support plate in the display module may be fixedly connected to the housing via a foam layer. For example, the terminal device may be a mobile phone, a tablet computer, or a laptop computer.

[0067] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0068] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: A display panel (100), a cover plate (200), a metal support plate (300) and a marking portion (400); The cover plate (200) is located on the display side of the display panel (100); The metal support plate (300) is located on a side of the display panel (100) facing away from the cover plate (200), and a first slot (S1) is provided at an edge of the metal support plate (300); The marking portion (400) is located on a side of the display panel (100) facing away from the cover plate (200), and an orthographic projection of the marking portion (400) on the display panel (100) is located within an orthographic projection of the first slot (S1) on the display panel (100).

2. The display module according to claim 1, wherein: The display panel (100) comprises: a substrate (101), a light-emitting functional layer (102) and a support layer (103); the light-emitting functional layer (102) is located on a side of the substrate (101) facing the cover plate (200); and the support layer (103) is located on a side of the substrate (101) facing away from the light-emitting functional layer (102); The marking portion (400) is distributed on a side of the substrate (101) away from the light-emitting functional layer (102), or the marking portion (400) is distributed on the supporting layer (103).

3. The display module according to claim 2, wherein: When the marking portion (400) is distributed on a side of the substrate (101) facing away from the light-emitting functional layer (102), the edge of the support layer (103) has a second groove communicating with the first groove (S1); The orthographic projection of the marking portion (400) on the cover plate (200) is located within the orthographic projection of the second slot on the cover plate (200).

4. The display module according to claim 3, wherein: The marking portion (400) comprises a groove provided on a side of the substrate (101) away from the light-emitting functional layer (102).

5. The display module according to claim 2, wherein: In the case where the marking portion (400) is distributed on the supporting layer (103), the marking portion (400) includes: a hollow groove penetrating the supporting layer (103).

6. The display module according to any one of claims 1 to 5, characterized in that: The outer surface of the metal support plate (300) is provided with an opening (O) communicating with the first slot (S1).

7. The display module according to any one of claims 1 to 5, characterized in that: The display module further comprises: a first conductive adhesive portion and a second conductive adhesive portion connected to each other, wherein the first conductive adhesive portion is located in the first slot (S1) and contacts the display panel (100), and the second conductive adhesive portion is located outside the first slot (S1) and contacts the metal support plate (300).

8. The display module according to any one of claims 1 to 5, characterized in that: The marking portion (400) comprises a first extending portion (401) and a second extending portion (402), wherein an extending direction of the first extending portion (401) and an extending direction of the second extending portion (402) intersect.

9. The display module according to any one of claims 1 to 5, characterized in that: The display module further comprises: a driving component (500) bound and connected to the display panel (100), wherein the driving component (500) is distributed on a side of the metal support plate (300) facing away from the cover plate (200); The metal support plate (300) has two first slots (S1) at its edge, and the drive assembly (500) is distributed between the two first slots (S1).

10. A terminal device, characterized in that: include: A housing and a display module, wherein the display module is the display module according to any one of claims 1 to 9, the display module is fixed in the housing, and the metal support plate in the display module is fixedly connected to the housing.

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