TWI694283B - Display module - Google Patents

Abstract

The invention discloses a display module comprising a first panel, a second panel, a backlight module, a connection block and a flexible circuit board. The second panel is attached to the first panel, and the second panel is disposed between the first panel and the backlight module. The connecting block is adhered to the first panel and adhered to the backlight module, and the flexible circuit board is connected to the second panel. The connecting block and the flexible circuit board are located on the same side of the backlight module, and the orthographic projection of the connecting block on the backlight module and the orthographic projection of the flexible circuit board on the backlight module do not overlap. The display module of the present invention enhances the external force resistance of the display device by providing a connection block adhered to the first panel and the backlight module, and particularly enhances the adhesion between the first panel and the backlight module, thereby avoiding the situation where the two sides of the display module are separated or loosened by external forces.

Description

Display device

The present invention relates to the technical field of display devices, and in particular to an assembly structure of a display device.

The traditional LCM (Liquid Crystal Display Module, liquid crystal display device) mainly includes a backlight module, a display module, and a cover plate. Among them, a TFT (Thin Film Transistor) substrate and a CF (Color Filter) substrate are used The frame glue is adhered to seal the liquid crystal to form a display module. A polarizer is provided on the upper and lower sides of the display module, the upper polarizer is adhered to the cover plate through OCA (Optically Clear Adhesive, optical glue), and the lower polarizer is connected to the backlight module through tape Bonding.

In the physical test of the whole machine, the cover plate and the backlight module will exert external forces in opposite directions. In general, since the cover plate is formed as an integral body by the OCA and CF substrates, and the backlight module is formed as another integral body by the tape and the TFT substrate, the bonding strength between the two integrals is greater than that of the frame glue acting on the CF substrate and the TFT substrate The bonding strength of the adhesive, so when two opposing external forces act and are greater than the adhesive force of the frame glue, it is easy to make the CF substrate and the TFT substrate separate or loosen at the frame glue adhesion position. Existing techniques to solve this problem Generally, the adhesion strength of the frame glue is increased, but there is still a certain degree of product defect rate.

An object of the present invention is to provide a display device that solves the problem that the existing display module is susceptible to separation or loosening by external force.

In order to achieve the above object, the display device of the present invention includes a first panel, a second panel, a backlight module, a connection block, and a flexible circuit board. The second panel is attached to the first panel. The second panel is disposed between the first panel and the backlight module. The connecting block is adhered to the first panel and the backlight module. The flexible circuit board is connected to the second panel. The connection block and the flexible circuit board are located on the same side of the backlight module, and the orthographic projection of the connection block on the backlight module and the orthographic projection of the flexible circuit board on the backlight module do not overlap.

In an embodiment of the above display device, the orthographic projection of the connecting block on the backlight module and the orthographic projection of the second panel on the backlight module do not overlap.

In an embodiment of the above display device, the connection block further includes two sub-connection blocks, which are located on both sides of the flexible circuit board.

In an embodiment of the above display device, the connection block further includes a lower surface, the backlight module includes a double-sided tape, and the lower surface and the second panel are respectively adhered to the double-sided tape.

In one embodiment of the above display device, there is a gap between the connection block and the second panel.

In an embodiment of the above display device, the connecting block is flush with at least one side of the backlight module.

In an embodiment of the above-mentioned display device, the connection block is located between a second panel side of the second panel and a backlight module side of the backlight module, wherein the distance between the connection block and the second panel side is greater than the connection block and The distance from the side of the backlight module.

In an embodiment of the above display device, the connecting block is a solid block made of non-sticky material.

In an embodiment of the above display device, the connection block further includes an upper surface, and an adhesive layer is provided on the upper surface, and the adhesive layer is adhered to the first panel.

In an embodiment of the above-mentioned display device, it further includes an optical adhesive disposed between the first panel and the second panel. The optical adhesive includes an extended convex portion, and the connecting block includes an upper surface. The upper surface is adhered to the first surface through the extended convex portion panel.

In an embodiment of the above display device, the optical glue has a groove portion, and the groove portion is located above the flexible circuit board.

In an embodiment of the above-mentioned display device, the connection block is a solid block formed by photocuring or thermal curing of the adhesive.

In an embodiment of the above display device, an air layer is provided between the first panel and the flexible circuit board.

The beneficial effect of the present invention is that the display device of the present invention enhances the resistance of the display device to external forces by providing a connection block adhered to the first panel and the backlight module, in particular, enhances the adhesion between the first panel and the backlight module to avoid The two sides of the display module are separated or loosened by external force.

The present invention is described in detail below with reference to the drawings and specific embodiments, but it is not intended to limit the present invention.

100‧‧‧Display device

110‧‧‧First panel

120‧‧‧Second panel

120a‧‧‧Second panel side

121‧‧‧Upper substrate

122‧‧‧Lower substrate

123‧‧‧Plastic frame

130‧‧‧Backlight module

130a‧‧‧backlight module side

140‧‧‧ flexible circuit board

150, 150’‧‧‧ connection block

150a, 150b ‧‧‧ sub-connection block

151‧‧‧Lower surface

152‧‧‧upper surface

101‧‧‧up polarizer

102‧‧‧Optical glue

102a‧‧‧Extended convex part

102b‧‧‧groove

103‧‧‧Lower polarizer

104‧‧‧ Double-sided tape

105‧‧‧ sticky layer

P1, P2‧‧‧Distance

1 is a schematic view of the top structure of the display device of the present invention; FIG. 2 is a schematic view of the top structure of the first panel of the display device of the present invention; FIG. 3 is a schematic view of the top structure of the display device of the present invention with the first panel removed Figure 4 is a schematic top view of an embodiment of the display device of the present invention with the first panel removed; Figure 5 is a partial cross-sectional schematic view of an embodiment of the display device of the present invention; Figure 6 is a display device of the present invention 7 is a schematic partial cross-sectional view of an embodiment of the display device of the present invention; FIG. 8 is an implementation of optical glue between the first panel and the second panel of the display device of the present invention 9 is a schematic partial cross-sectional view of an embodiment of the display device of the present invention; FIG. 10 is a partial cross-sectional schematic view of an embodiment of the display device of the present invention.

The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solutions and effects of the present invention, but they are not intended to limit the scope of protection of the appended claims of the present invention.

References in the specification to "embodiments", "another embodiment", "this embodiment", etc., mean that the described embodiments may include specific features, structures or characteristics, but not every embodiment must contain These specific features, structures, or characteristics. Moreover, such expressions do not refer to the same embodiment. Further, when describing specific features, structures, or characteristics in conjunction with the embodiments, whether or not explicitly described, it has been shown that it is within the knowledge of those skilled in the art to incorporate such features, structures, or characteristics into other embodiments. .

Certain words are used in the specification and subsequent request items to refer to specific components or parts. Those of ordinary skill in the art should understand that technical users or manufacturers may refer to the same component or part in different terms or terms . This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but differences in functions of components or parts as criteria for distinguishing. The "include" and "include" mentioned in the entire specification and the subsequent request items are open-ended terms, so they should be interpreted as "include but not limited to". In addition, the term "connection" here includes any direct and indirect means of connection.

It should be noted that in the description of the present invention, if the terms "horizontal", "vertical", "upper", "lower", "front", "back", "left", "right", "vertical" appear Straight", "horizontal", "top", "bottom", "inner", "outer", etc. indicated orientation or position relationship is based on the The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as Restrictions on the utility model. For the sake of clarity, the order terms “first,” “second,” “third,” and “fourth” mentioned in this article are used to make an element, region, or part the same as or similar to another one. , Partially distinguished, not used to define specific elements, regions, parts.

As shown in FIGS. 1 to 3, FIG. 1 is a schematic view of the top structure of the display device of the present invention, FIG. 2 is a schematic view of the top structure of the first panel of the display device of the present invention, and FIG. 3 is a display device of the present invention with the first removed A schematic view of the top structure of the panel. The structure shown in FIG. 3 covers the first panel shown in FIG. 2 to form the structure of the display device shown in FIG. 1.

The display device 100 of the present invention includes a first panel 110, a second panel 120, a backlight module 130, and a flexible circuit board 140. The second panel 120 is attached to the first panel 110, and the backlight module 130 is attached to the second panel 120. That is, as shown in FIG. 5, FIG. 5 is a partial cross-sectional schematic diagram of AA in FIG. 1. The panel 110, the second panel 120, and the backlight module 130 are stacked from top to bottom. The flexible circuit board 140 is connected to the second panel 120 and bent under the backlight module 130.

The first panel 110 may be, for example, a protective cover glass, a touch panel, or a composite panel integrating a touch panel and a protective cover glass. The second panel 120 may be a module including an upper substrate 121 and a lower substrate 122. The upper substrate The lower substrate may be, for example, a TFT substrate and a CF substrate. The second panel 120 and the first surface An optical plate such as an upper polarizer and a lower polarizer may be attached between the board 110 and between the second panel 120 and the backlight module 130.

In the embodiment shown in FIG. 5, the second panel 120 is, for example, a display module formed by adhering the upper substrate 121 and the lower substrate 122 through the glue frame 123, and at the same time, the upper layer of the display module can be attached with the polarizer 101 and passed The optical glue 102 is adhered to the first panel 110, and the lower polarizer 103 can be attached to the lower layer of the display module. And in this embodiment, the second panel 120 is adhered to the backlight module 130 through the double-sided adhesive 104.

The display device 100 of the present invention further includes a connection block 150, which is adhered to the first panel 110, and at the same time, the connection block 150 is adhered to the backlight module 130, that is, the connection block 150 is adhered and connected to the first panel 110 and the backlight module 130 Therefore, the adhesion between the first panel 110 and the backlight module 130 is enhanced. When the opposite external force is applied to the first panel 110 and the backlight module 130 at the same time, the external force first acts on the adhesive force between the connecting block 150 and the first panel 110 and the adhesive force between the connecting block 150 and the backlight module 130 Without directly acting on the adhesive force formed by the plastic frame 123 between the upper substrate 121 and the lower substrate 122 of the second panel 120, thereby protecting the second panel 120 and improving the peeling resistance of the display device 100 strength.

In the present invention, the connection block 150 adhered between the first panel 110 and the backlight module 130 is provided, so that the first panel 110, the connection block 150 and the backlight module 130 form an integral body, and are disposed on the first panel 110 and the backlight module 130 The second panel 120 in the middle plays a protective role. The arrangement of the connection block 150 increases the peeling of the upper substrate 121 and the lower substrate of the second panel 120 The external force value required by 122 can, to a certain extent, prevent the upper substrate 121 and the lower substrate 122 of the second panel 120 from separating or loosening when the external force acts.

As shown in FIG. 3, the connection block 150 and the flexible circuit board 140 are located on the same side of the backlight module 130, and the orthographic projection of the connection block 150 on the backlight module 130 and the orthographic projection of the flexible circuit 140 board on the backlight module 130 do not overlap. In addition, the orthographic projection of the connection block 150 on the backlight module 130 and the orthographic projection of the second panel 120 on the backlight module 130 do not overlap.

1 and FIG. 5 at the same time, there is an air layer between the first panel 110 and the flexible circuit board 140, that is to say, there is no adhesive layer but a gap between the flexible circuit board 140 and the first panel 110.

In one embodiment, as shown in FIG. 4, the connection block 150 is disposed on one side of the flexible circuit board 140, and the backlight module 140 is bonded to the first panel 110 through the connection block 150.

In another embodiment, as shown in FIG. 3, the connecting block 150 further includes two sub-connecting blocks 150a and 150b, the two sub-connecting blocks 150a and 150b are located on both sides of the flexible circuit board 140, and the backlight module 140 passes through the two sub-connecting blocks The connection blocks 150a and 150b are adhered to the first panel 110, the connection strength is higher, and the peeling resistance is stronger.

In an embodiment, as shown in FIG. 5, the connection block 150 further includes a lower surface 151, and the lower surface 151 of the connection block 150 is adhered to the backlight module 130 through the double-sided adhesive 104. In detail, the lower surface 151 of the connecting block 150 and the second panel 120 are respectively adhered to the double-sided adhesive 104. The double-sided tape 104 is, for example, a light-shielding double-sided tape with a light-shielding function.

In an embodiment, as shown in FIGS. 3 and 5, the connection block 150 is located between the second panel side 120 a of the second panel 120 and the backlight module side 130 a of the backlight module 130, wherein the connection block 150 and the first There is a distance P1 between the sides 120a of the two panels, and a distance P2 between the connecting block 150 and the side 130a of the backlight module, and the distance P1 is greater than the distance P2.

The distance P1 provided between the connection block 150 and the second panel 120 can avoid problems such as friction between the connection block 150 and the second panel 120 or glue penetration into the second panel 120.

In an embodiment, the connection block 150 may be flush with at least one side of the backlight module 130 to maximize the attachment area of the lower surface 151 and the upper surface 152 of the connection block 150. As shown in FIG. 6, the connection block 150 may be flush with the backlight module side 130 a of the backlight module 130.

The connecting block 150 of the present invention may be a solid block made of non-adhesive material, for example, made of PET (Polyethylene terephthalate), rubber and other materials. The connection block 150 is made of a material with a fixed shape, and the bonding area of the upper and lower surfaces of the connection block 150 can be determined according to the required adhesion force, and then the size of the connection block 150 can be determined, and also according to one or both sides of the flexible circuit board 140 The area of the open area determines the size of the connection block 150, which is not only neatly shaped but also has a controllable attachment area, to avoid the occurrence of glue spillage and unequal heights. In addition, the present invention uses a material with a fixed shape to make the connection block 150, which is better aligned with the side of the backlight module 130.

As shown in FIG. 6, the connection block 150 includes an upper surface 152. In an embodiment, the upper surface 152 can be adhered to the first surface by providing an adhesive layer 105 On the panel 110. That is to say, the adhesive layer 105 can be prepared with glue according to the size of the upper surface 152 of the connection block 150 to save materials.

In other embodiments, as shown in FIGS. 7 and 8, the upper surface 152 of the connection block 150 is adhered to the first panel 110 by the optical adhesive 102 disposed between the first panel 110 and the second panel 120. In detail, the optical adhesive 102 includes at least one extending convex portion 102a, which extends above the connecting block 150. In this embodiment, the extending convex portion 102a covers the upper surface 152 of the connecting block 150, so that the connecting block The upper surface 152 of 150 is adhered to the first panel 110 by the extending convex portion 102a of the optical glue 102.

Please refer to FIG. 3, FIG. 7 and FIG. 8 at the same time. The two sides of the optical adhesive 102 respectively have extension protrusions 102a, and the sub-connecting blocks 150a and 150b are respectively bonded to the first panel 110 through the two extension protrusions 102a. In this embodiment, it is not necessary to separately prepare glue for the connecting block in advance, which simplifies the process steps. In contrast, the optical adhesive 102 has a groove portion 102b, and the groove portion 102b is located above the flexible circuit board 104 to prevent the flexible circuit board 104 from adhering to the optical adhesive 102 and affecting its subsequent bending and installation.

In addition, the connecting block of the present invention may be a solid block formed after the adhesive is cured by light or heat. Please refer to FIG. 3 and FIG. 9 at the same time. The glue point is placed on the area of the backlight module 130 that is not covered by the flexible circuit board 140, that is, it can be glued on one side or both sides of the flexible circuit board 140. After that, the first panel 110 is attached to make the first panel 110 directly contact and adhere to the gel. The connection block 150' in the form of a solid block formed after the colloid is cured by light or heat, at this time, the connection block 150' and the first panel 110 and the backlight module 130 is bonded to form a unified whole. The difference between this embodiment and the embodiment shown in FIG. 5 lies in the form of the connection block.

Please refer to FIG. 8 and FIG. 10 at the same time. In this embodiment, the optical adhesive 102 includes at least one extending convex portion 102a, and the extending convex portion 102a extends above the connecting block 150'. Since the connecting block 150' itself has adhesiveness, the adhesive force with the extension protrusion 102a of the optical glue can be increased.

本發明所附的請求項的保護範圍。 Of course, there can be many other embodiments of the present invention. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and Deformation should belong to

The protection scope of the claim attached to the present invention.

120‧‧‧Second panel

120a‧‧‧Second panel side

130‧‧‧Backlight module

130a‧‧‧backlight module side

140‧‧‧ flexible circuit board

150‧‧‧ connection block

150a, 150b ‧‧‧ sub-connection block

P1, P2‧‧‧Distance

Claims (12)

A display device includes: a first panel; a second panel attached to the first panel; a backlight module, the second panel is disposed between the first panel and the backlight module; a connection block, adhered to The first panel is adhered to the backlight module; and a flexible circuit board is connected to the second panel; wherein the connection block and the flexible circuit board are located on the same side of the backlight module, and the connection block is at the backlight The orthographic projection on the module and the orthographic projection of the flexible circuit board on the backlight module do not overlap, and the connection block further includes a lower surface, the backlight module includes a double-sided adhesive tape, the lower surface and the second panel are respectively adhered to On the double-sided tape. The display device according to claim 1, wherein the front projection of the connection block on the backlight module and the front projection of the second panel on the backlight module do not overlap. The display device according to claim 1, wherein the connection block further includes two sub-connection blocks, which are respectively located on both sides of the flexible circuit board. The display device according to claim 1, wherein there is a gap between the connection block and the second panel. The display device according to claim 1, wherein the connection block is flush with at least one side of the backlight module. The display device according to claim 1, wherein the connection block is located between a second panel side of the second panel and a backlight module side of the backlight module, wherein the connection block and the second panel side Is greater than the distance between the connecting block and the side of the backlight module. The display device according to claim 1, wherein the connection block is a solid block made of a non-adhesive material. The display device according to claim 7, wherein the connection block further comprises an upper surface, the upper surface is provided with an adhesive layer, and the adhesive layer is adhered to the first panel. The display device according to claim 7, further comprising an optical adhesive disposed between the first panel and the second panel, the optical adhesive includes an extended convex portion, and the connection block includes an upper surface, the upper The surface is adhered to the first panel through the extended convex portion. The display device according to claim 9, wherein the optical glue has a groove portion, the groove portion is located above the flexible circuit board. The display device according to claim 1, wherein the connection block is a solid block formed after the adhesive is cured by light or heat. The display device according to claim 1, wherein an air layer is provided between the first panel and the flexible circuit board.

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