TW201820293A - Display device - Google Patents

Abstract

A display device comprises a bezel, a rigid circuit board, and a screwing element. The bezel has a body and a fixing element having a first screwing hole. The rigid circuit board has a second screwing hole corresponding to the first screwing hole, and the diameter of the second screwing hole is larger than that of the first screwing hole. The screwing element has a positioning part, an inclined-surface part, and a fixing part. The inclined-surface part has a first surface and a second surface opposite to the first surface. The first surface connects to the positioning part, and the second surface connects to the fixing part. The inclined-surface part gradually shrinks from the first surface to the second surface. The cross-section of the fixing part is smaller than the second surface to form a stopping part. The rigid circuit board is positioned between the positioning part and the fixing element by using the screwing element through the first screwing hole and the second screwing hole. The thickness of the rigid circuit board is smaller than a gap between the bottom surface of the positioning part and the top surface of the fixing element. The diameter of the second screwing hole is larger than the diameter of the second surface of the inclined-surface part and that is smaller than the diameter of the positioning part.

Description

Display device

The invention relates to a display device, in particular to a display device for limiting a hard circuit board through a lock attachment.

Generally, a display panel of a display device is connected to a rigid circuit board through a flexible circuit board, and the rigid circuit board is usually locked to the casing and fixed.

However, because the rigid circuit board is tightly locked to the housing by the locking attachment, when the display device is subjected to the opening and closing test, carrying vibration, assembly pull or repeated use, it may cause the flexible circuit board connected to the rigid circuit board to be damaged. The wiring is damaged, thereby affecting the display quality and even causing the display device to fail. In addition, according to different design requirements, it may be necessary to match hard circuit boards with different thickness specifications and the corresponding lock accessories need to be replaced. It is difficult to share the lock accessories, thereby increasing the manufacturing cost and the complexity of material management.

It is an object of one embodiment of the present invention to provide a display device, which enables hard circuit boards of different thickness specifications to share lock attachments, thereby saving manufacturing costs and reducing the complexity of material management.

Another object of an embodiment of the present invention is to provide a display device that does not completely lock and fix the rigid circuit board, so that the rigid circuit board can have a flexible space with slight fluctuations.

In one embodiment, a display device includes a housing, a rigid circuit board, and a lock accessory. The housing has a body and a positioning member, and the positioning member has a first locking hole. The rigid circuit board has a second locking hole corresponding to the first locking hole, and the diameter of the second locking hole is larger than that of the first locking hole. The lock attachment has a limiting portion, an inclined surface and a fixed portion, wherein the inclined surface has a first surface and a second surface opposite to each other, a first surface of the inclined surface is connected to the limiting portion, and a second surface of the inclined surface is connected to the fixed portion, The oblique portion is tapered from the first surface to the second surface. The cross section of the fixed portion is smaller than the second surface of the oblique portion to form a stop portion. The hard circuit board passes through the lock attachment through the first lock hole and the second lock hole. The thickness of the rigid circuit board is limited to be between the limit portion of the lock accessory and the positioning member of the housing, and the distance between the bottom surface of the limit portion and the top surface of the positioning member of the housing is small, and the second locking hole of the rigid circuit board is The diameter of the hole is larger than the diameter of the second surface of the inclined surface of the lock accessory and smaller than the diameter of the limiting portion of the lock accessory.

The display device can match the oblique portion of the lock accessory with the change of the aperture of the rigid circuit board, so that the rigid circuit boards of different thickness specifications can share the same lock accessory, thereby saving manufacturing costs and reducing the complexity of material management. In addition, since the thickness of the rigid circuit board is smaller than the distance between the bottom surface of the limiting portion and the top surface of the positioning member of the housing, and the hole diameter of the second locking hole of the rigid circuit board is larger than the diameter of the second surface of the lock accessory and smaller than that of the lock accessory The diameter of the restricting portion makes the rigid circuit board limited between the restricting portion of the lock accessory and the positioning member of the housing, but the rigid circuit board is not completely locked and fixed, so that the rigid circuit board can have slight changes. The flexible circuit board can prevent the rigid circuit board from being completely locked and fixed when being shocked or pulled. The external force is mainly absorbed by the flexible circuit board connected to the rigid circuit board, causing damage or disconnection of the flexible circuit board.

Please refer to FIG. 1, FIG. 2 and FIG. 3, wherein FIG. 1 is a perspective view of a display device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the display device of FIG. 1 along the AA section line, and FIG. An oblique view of the casing of an embodiment. It should be noted that, in order to clearly present the concept of the embodiment, the tape is not shown in FIG. 1. In this embodiment, the display device 1 includes a casing 10, a rigid circuit board 20 and a lock attachment 30. The housing 10 has a body 12 and a positioning member 14, wherein the positioning member 14 has a first locking hole 142. In an embodiment, the housing may include a connecting member 16, which is interposed between the body 12 and the positioning member 14. The connecting member 16 extends, for example, in a direction toward the rigid circuit board 20. In addition, the body 12, the positioning member 14, and the connecting member 16 may be integrally formed. For example, the positioning member 14 and the connecting member 16 are formed by pressing and folding from the bottom of the adjacent edge of the housing 10, but the positioning member 14 is not limited to this. It is fixed on the casing 10 by welding or assembly, and the design can be adjusted as required.

In an embodiment, a display panel 50 may be disposed on the body 12 of the casing 10. The display panel 50 may be supported by the frame 70, and the display panel 50 is electrically connected to the rigid circuit board 20 through a flexible circuit board 60, for example. connection. In addition, in an embodiment, the display device 1 may include an adhesive tape 80, which may cover the rigid circuit board 20, the lock attachment 30, and the positioning member 14 of the housing 10, and one end of the adhesive tape 80 may be fixed to the display panel 50. The other end of the adhesive tape 80 can be fixed to the bottom of the body 12 of the casing 10. In addition, the outer shape of the adhesive tape 80 may not be as flat as shown in FIG. 2, and may be wrinkled or deformed. Here, for the convenience of reading, the adhesive tape 80 is extended flatly. It should be noted that the adhesive tape 80 may be configured with only partial adhesive instead of the entire surface. For example, the adhesive tape 80 may be disposed only at one end fixed to the display panel 50 and the other end fixed to the bottom of the main body 12 of the casing 10. Adhesive is used to avoid affecting the flexible space of the rigid circuit board 20 which can be slightly changed.

Please refer to FIGS. 2, 4 and 5, wherein FIG. 4 is a side view of a lock accessory according to an embodiment of the present invention and FIG. 5 is a partially enlarged side view of a display device according to an embodiment of the present invention. The rigid circuit board 20 has a second locking hole 242 corresponding to the first locking hole 142, and the diameter D2 of the second locking hole 242 is larger than the diameter D1 of the first locking hole 142. It should be noted that the inner edge of the hole wall of the locking hole may have threads or other hole wall microstructures, and the diameter of the locking hole may be, for example, the diameter of the innermost edge of the hole wall of the locking hole.

The lock attachment 30 has a limiting portion 32, an inclined surface portion 34, and a fixing portion 36. The inclined surface portion 34 has a first surface 342 and a second surface 344 opposite to each other. The second surface 344 of the portion 34 is connected to the fixing portion 36, the inclined surface portion 34 is tapered from the first surface 342 to the second surface 344, and the cross-section of the fixing portion 36 is smaller than the second surface 344 of the inclined surface portion 34 to form a stop portion 38. . It should be noted that the outer edge of the cross-section of the fixed portion 36 may have threads or other surface microstructures, and the cross-section of the fixed portion 36 may be, for example, the outermost cross-section of the fixed portion. When the lock attachment 30 is locked, if the stopper portion 38 of the lock attachment 30 has abutted against the positioning member 14, the lock attachment 30 cannot be locked downward any more, so the stopper portion 38 can help confirm that the lock attachment 30 has Lock in place. In addition, in one embodiment, the positioning member 14 has, for example, a hole wall 144 extending away from the rigid circuit board 20. The hole wall 144 surrounds the hole wall 144 to form a first locking hole 142. The first locking hole 142 is received and fixed. When the connecting portion 36 is in contact, the stopping portion 38 abuts the top surface 146 of the positioning member 14.

In addition, it should be noted that, in an embodiment, the lock attachment 30 may be an integrally formed element such as a screw or a bolt, or the lock attachment 30 may be a combination of a plurality of units such as a screw or a bolt and then socketed. The sleeve constitutes the lock accessory of this embodiment, but is not limited thereto, and the design can be adjusted according to actual needs.

The rigid circuit board 20 passes through the first attachment hole 142 and the second attachment hole 242 through the lock attachment 30 and is restricted between the position-limiting portion 32 of the lock attachment 30 and the positioning member 14 of the housing 10. The thickness T1 of the rigid circuit board 20 is smaller than the distance T2 between the bottom surface 322 of the limiting portion 32 and the top surface 146 of the positioning member 14 of the housing 10, and the aperture D2 of the second locking hole 242 of the rigid circuit board 20 is larger than the inclined surface of the locking attachment 30. The diameter D3 of the second surface 344 of the portion 34 is smaller than the diameter D4 of the limiting portion 32 of the lock attachment 30. It should be noted that, unlike the hard circuit board of the prior art, the hard circuit board is tightly locked to the housing by the locking attachment. In this embodiment, the thickness T1 of the hard circuit board 20 is smaller than the bottom surface 322 of the limiting portion 32 and the positioning member 14 of the housing 10. The pitch T2 of the top surface 146, and the diameter D2 of the second locking hole 242 of the rigid circuit board 20 is larger than the diameter D3 of the second surface 344 of the inclined surface 34 of the lock accessory 30 and smaller than the diameter of the limiting portion 32 of the lock accessory 30. D4, so that the hard circuit board 20 is limited between the limiting portion 32 of the lock attachment 30 and the positioning member 14 of the housing 10, but the hard circuit board 20 is not completely locked and fixed, so that the hard circuit board 20 can have The elastic space with slight fluctuation can avoid external force shock when being absorbed by the flexible circuit board connected to the rigid circuit board when being shocked or pulled, resulting in damage or disconnection of the flexible circuit board.

In addition, referring to FIG. 4, in an embodiment, the diameter D4 of the limiting portion 32 may be larger than the diameter D5 of the first surface 342 of the inclined surface portion 34. In addition, in an embodiment, the height H1 of the fixing portion 36 may be greater than the height H2 of the inclined surface portion 34, and the height H2 of the inclined surface portion 34 may be greater than the height H3 of the limiting portion 32. The height H1 of the fixing portion 36 is related to the locking range, so a larger height is required to ensure the locking strength. Therefore, the height H1 of the fixing portion 36 may be greater than the height H2 of the inclined surface portion 34. Since the inclined surface portion 34 itself is to form an inclined surface, the height H2 of the inclined surface portion 34 also needs a certain thickness. Therefore, the height H2 of the inclined surface portion 34 may be greater than the height H3 of the limiting portion 32. In an embodiment, the inclined surface 34 may have an inclined surface 346 connecting the first surface 342 and the second surface 344, and the second surface 344 and the inclined surface 346 have an obtuse angle θ1. The obtuse angle θ1 is, for example, between 110 degrees and 160 degrees.

Please refer to FIG. 5 and FIG. 6, wherein FIG. 6 is similar to FIG. 5, and FIG. 6 is a partial enlarged side view of a display device according to an embodiment of the present invention. In one embodiment, when the bottom surface 22 of the rigid circuit board 20 contacts the top surface 146 of the positioning member 14 and the extension axis C2 of the center of the second locking hole 242 substantially overlaps the extension axis C1 of the center of the first locking hole 142, the hard type Neither the top surface 26 of the circuit board 20 nor the inner edge 24 of the second locking hole 242 of the rigid circuit board 20 contact the lock attachment 30. In other words, although the hard circuit board 20 is limited to be located between the limiting portion 32 of the lock attachment 30 and the positioning member 14 of the housing 10, the hard circuit board 20 is not completely locked and fixed, so that the hard circuit board 20 can have a micro The flexible space with varying amplitudes can be avoided from being shaken or pulled. Most of the impact external force is absorbed by the flexible circuit board connected to the rigid circuit board, resulting in damage or disconnection of the flexible circuit board. In addition, it should be noted that, because the rigid circuit board 20 may have a slightly flexible elastic space, the top surface 26 of the rigid circuit board 20 and the inner edge 24 of the second locking hole 242 of the rigid circuit board 20 may contact the lock. Attachment 30, but when the bottom surface 22 of the rigid circuit board 20 contacts the top surface 146 of the positioning member 14 and the extension axis C2 of the center of the second locking hole 242 substantially overlaps the extension axis C1 of the center of the first locking hole 142, the rigid circuit board The top surface 26 of 20 and the inner edge 24 of the second locking hole 242 of the rigid circuit board 20 are not in contact with the lock attachment 30.

In one embodiment, the parallel limiting portion 32 may have a projection plane 40 (ie, the XZ plane). When the bottom surface 22 of the rigid circuit board 20 contacts the top surface 146 of the positioning member 14 and the extension axis C2 of the center of the second locking hole 242 When the extension axis C1 of the center of the first locking hole 142 is substantially overlapped, the top surface 26 of the rigid circuit board 20 and the second locking hole 242 have an end edge 262 at the intersection, and a vertical projection plane 40 may be provided between the end edge 262 and the inclined surface 346. Gap G1. It should be noted that if the gap G1 is too large, the rigid circuit board 20 itself may shake greatly, but the flexible circuit board may be pulled, resulting in damage or disconnection of the flexible circuit board. Therefore, in an embodiment, the gap G1 may be smaller than the thickness T1 of the rigid circuit board 20, in other words, the thickness T1 of the rigid circuit board 20 may be larger than the gap G1, where the gap G1 may be greater than zero and less than or equal to 0.3 millimeter (mm).

Please refer to FIG. 5, FIG. 6, and FIG. 7, wherein FIG. 7 is similar to FIG. 5, and FIG. 7 is also a partially enlarged side view of a display device according to an embodiment of the present invention. modify. In an embodiment, the inclined surface 346 and the top surface 146 of the positioning member 14 of the housing 10 are provided with an acute angle Θ2 and an obtuse angle Θ1. The thickness T1 of the rigid circuit board 20 may be substantially: the diameter D2 of the second locking hole 242 and the diameter D2 of the second locking hole 242. The difference between the diameter D3 of the two faces 344 is taken as half, and then multiplied by the tangent function (tanΘ2) of the acute angle Θ2, and then the gap G1 is subtracted. In other words, T1 ≒ ｛tanΘ2 × [0.5 × (D2−D3)]｝ − G1.

In addition, please refer to FIG. 5, FIG. 6, and FIG. 8, where FIG. 8 is a comparison of a partially enlarged side view of a rigid circuit board with two different thickness specifications of a display device according to an embodiment of the present invention. According to the embodiment described above, in order to prevent the rigid circuit board from being tightly locked to the housing by the locking attachment, when the bottom surface 22 of the rigid circuit board 20 contacts the top surface 146 of the positioning member 14 and the center of the second locking hole 242 extends the axis C2 When the extension axis C1 of the center of the first locking hole 142 is substantially overlapped, the top surface 26 of the rigid circuit board 20 and the second locking hole 242 have an end edge 262 at the intersection, and a vertical projection plane 40 may be provided between the end edge 262 and the inclined surface 346. Gap G1. In an embodiment, if a gap G1 is used in a specification of a display device, for example, 0.15 millimeters (mm), the rigid circuit board 20 may have a slightly flexible elastic space to prevent the rigid circuit board 20 from being completely locked or fixed. When the gap G1 is too large, the rigid circuit board 20 itself may greatly shake. At this time, if two rigid circuit boards 20a and 20b with different thickness specifications are used, the lock attachment 30 can be shared without changing the size of the lock attachment, thereby saving manufacturing costs and reducing the complexity of material management. Specifically, the thickness T1a of the rigid circuit board 20a in the region (a) above FIG. 8 is greater than the thickness T1b of the rigid circuit board 20b in the region (b) below the FIG. The hole diameter D2a of the two locking holes is larger than the hole diameter D2b of the second locking hole of the rigid circuit board 20b in the region (b). In other words, compared with the rigid circuit board 20b in the area (b), the thickness T1a of the rigid circuit board 20a in the area (a) is thicker, and the two are rigid circuit boards with different thickness specifications. At this time, the hard circuit in the area (a) is used. The second locking hole diameter D2a of the board 20a is larger than the second locking hole diameter D2b of the rigid circuit board 20b in the region (b). The end edge 262a of the rigid circuit board 20a in the region (a) and the inclined surface 346 may have a vertical direction. The gap G1 (for example, 0.15 mm) of the projection plane 40, and the end edge 262b of the rigid circuit board 20b in the area (b) is closer to the extension line C1 / C2 where the centers of the first locking hole and the second locking hole substantially overlap. Therefore, substantially the same gap G1 (for example, 0.15 mm) of the vertical projection plane 40 can be maintained between the end edge 262b and the inclined surface 346 of the rigid circuit board 20b in the region (b), regardless of the region (a) above FIG. 8 Both the hard circuit board 20a and the hard circuit board 20b in the area (b) in the lower part of FIG. 8 can be achieved by the lock attachment 30 having the inclined surface 34 with substantially equal gaps G1, that is, when the hard circuit board is Thick, the larger the hole diameter of the second locking hole of the rigid circuit board can be drilled, and the lock attachment with the inclined surface can be used to maintain different The thickness of the rigid circuit board has a substantially equal gap G1, so that the common lock attachment 30 can be reached without having to replace the lock attachment 30 with the thickness of the rigid circuit board.

According to the display device of the above embodiment, the oblique portion of the lock accessory can be matched with the change of the aperture of the hard circuit board, so that the hard circuit boards of different thickness specifications can share the lock attachment, thereby achieving the complexity of saving manufacturing costs and reducing material management. degree. In addition, because the thickness of the rigid circuit board is smaller than the distance between the bottom surface of the limiting portion and the top surface of the positioning member of the housing, and the diameter of the second locking hole of the rigid circuit board is larger than the diameter of the second surface of the inclined surface of the locking accessory and smaller than The diameter of the limiting part of the lock accessory makes the hard circuit board be located between the limiting part of the lock accessory and the positioning member of the housing, but the hard circuit board is not completely locked and fixed, so that the hard circuit board can have The elastic space with slight fluctuation can avoid external force shock when being absorbed by the flexible circuit board connected to the rigid circuit board when being shocked or pulled, resulting in damage or disconnection of the flexible circuit board.

Although the present invention is disclosed in the foregoing preferred embodiments as above, it is not intended to limit the present invention. Any person skilled in similar arts can make some changes and retouch without departing from the spirit and scope of the present invention. The scope of patent protection of an invention shall be determined by the scope of patent application attached to this specification.

1‧‧‧ display device

10‧‧‧shell

12‧‧‧ Ontology

14‧‧‧ Positioning piece

142‧‧‧First lock hole

144‧‧‧hole wall

146‧‧‧Top

16‧‧‧Connector

20, 20a, 20b‧‧‧ rigid circuit board

22‧‧‧ underside

24‧‧‧ inner edge

242‧‧‧Second lock hole

26‧‧‧Top

262‧‧‧ edge

30‧‧‧ lock accessories

32‧‧‧Limiting Department

322‧‧‧ underside

34‧‧‧ oblique face

342‧‧‧First

344‧‧‧Second Side

346‧‧‧ bevel

36‧‧‧Fixed Department

38‧‧‧stop

40‧‧‧ projection plane

50‧‧‧ display panel

60‧‧‧flexible circuit board

70‧‧‧Frame

80‧‧‧Tape

C1, C2‧‧‧ center of extension axis

G1‧‧‧ Clearance

H1, H2, H3‧‧‧‧ height

D1, D2, D2a, D2b‧‧‧‧Aperture

D3, D4, D5‧‧‧ diameter

T1, T1a, T1b‧‧‧thickness

T2‧‧‧Pitch

Θ1‧‧‧ obtuse angle

Θ2‧‧‧ acute angle

FIG. 1 is a perspective view of a display device according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the display device of Fig. 1 taken along the line A-A. FIG. 3 is a perspective view of a housing according to an embodiment of the present invention. FIG. 4 is a side view of a lock attachment according to an embodiment of the present invention. FIG. 5 is a partially enlarged side view of a display device according to an embodiment of the present invention. FIG. 6 is a partially enlarged side view of a display device according to an embodiment of the present invention. FIG. 7 is a partially enlarged side view of a display device according to an embodiment of the present invention. FIG. 8 is a partial enlarged side view comparison of a rigid circuit board with two different thickness specifications of a display device according to an embodiment of the present invention.

Claims (13)

A display device includes: a housing having a body and a positioning member, the positioning member having a first locking hole; a rigid circuit board having a second locking hole corresponding to the first locking hole, the The aperture of the second locking hole is larger than the aperture of the first locking hole; and a locking accessory, the locking accessory has a limiting portion, an inclined surface portion, and a fixed portion, wherein the inclined surface portion has an opposite first first portion. Surface and a second surface, the first surface of the inclined surface is connected to the limiting portion, the second surface of the inclined surface is connected to the fixing portion, and the inclined surface is tapered from the first surface to the second surface A cross-section of the fixing portion is smaller than the second surface of the inclined surface portion to form a stop portion, and the rigid circuit board passes through the lock attachment through the first locking hole and the second locking hole and is restricted to be located at The thickness of the rigid circuit board between the position-limiting portion of the lock accessory and the positioning member of the housing is smaller than the distance between the bottom surface of the position-limiting portion and the top surface of the positioning member of the housing, and the rigid circuit board The diameter of the second locking hole is larger than the diameter of the second surface of the inclined surface of the locking accessory and smaller than The diameter of the stopper portion of the fastening element. The display device according to item 1 of the patent application scope, wherein a diameter of the limiting portion is larger than a diameter of the first surface of the inclined surface portion. The display device according to item 1 of the patent application scope, wherein the positioning member has a hole wall extending away from the rigid circuit board, the hole wall surrounds to form the first locking hole, and the first locking hole When the fixing portion is received and fixed, the stop portion abuts the top surface of the positioning member. The display device according to item 1 of the scope of patent application, wherein a height of the fixing portion is greater than a height of the inclined surface portion, and a height of the inclined surface portion is greater than a height of the limiting portion. The display device according to item 1 of the scope of patent application, wherein the inclined surface has an inclined surface connecting the first surface and the second surface, and the second surface and the inclined surface have an obtuse angle. The display device according to item 5 of the scope of patent application, wherein the obtuse angle is between 110 degrees and 160 degrees. The display device according to item 1 of the scope of patent application, wherein when the bottom surface of the rigid circuit board contacts the top surface of the positioning member and the extension axis of the center of the second locking hole substantially overlaps the extension of the center of the first locking hole When the shaft is pivoted, neither the top surface of the rigid circuit board nor the inner edge of the second locking hole of the rigid circuit board touches the lock attachment. The display device according to item 5 of the scope of patent application, wherein a projection plane is parallel to the limiting portion, and when the bottom surface of the rigid circuit board contacts the top surface of the positioning member and the extension axis of the center of the second locking hole When the extension axis of the center of the first locking hole is substantially overlapped, an end edge is formed at the intersection of the top surface of the rigid circuit board and the second locking hole, and a gap is perpendicular to the projection plane between the end edge and the inclined surface. The display device according to item 8 of the scope of patent application, wherein the thickness of the rigid circuit board is greater than the gap. The display device according to item 8 of the scope of patent application, wherein the gap is greater than zero and less than or equal to 0.3 millimeters (mm). The display device according to item 8 of the scope of patent application, wherein the inclined surface and the top surface of the positioning member of the housing have an acute angle complementary to the obtuse angle, the acute angle is Θ2, and the aperture of the second locking hole is D2 The diameter of the second surface is D3, the gap is G1, and the thickness of the hard circuit board is substantially ｛tanΘ2 × [0.5 × (D2−D3)]] − G1. The display device according to item 1 of the scope of patent application, wherein a display panel is arranged on the body of the casing, and the display panel is electrically connected to the hard circuit board through a flexible circuit board. According to the display device described in item 1 of the patent application scope, the housing further includes a connecting member interposed between the main body and the positioning member, and the connecting member extends back to the rigid circuit board.