TW202026722A - 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, specifically, 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, the TFT (Thin Film Transistor) substrate is used between the CF (Color Filter, color filter) substrate. The frame glue is bonded to seal the liquid crystal to form a display module. A polarizer is placed on the upper and lower sides of the display module. The upper polarizer is bonded to the cover through OCA (Optically Clear Adhesive), and the lower polarizer is bonded to the backlight module through tape Glued.

When doing the physical test of the whole machine, the cover plate and the backlight module will exert an external force in the opposite direction. In general, since the cover plate is formed by OCA and the CF substrate as a whole, and the backlight module is formed by tape and the TFT substrate as another whole, the bonding strength between the two wholes is greater than the sealant acting on the CF substrate and the TFT substrate. Therefore, when the two opposite external forces are greater than the bonding force of the frame glue, it is easy to cause the CF substrate and the TFT substrate to separate or loosen at the bonding position of the frame glue. Existing technology to solve this problem Generally it is to increase the bonding strength of the frame glue, but there is still a considerable degree of product defect rate.

The object of the present invention is to provide a display device, which solves the problem that the existing display module is easily separated or loosened 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 arranged between the first panel and the backlight module, the connecting block is attached to the first panel and attached 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.

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

In an embodiment of the above-mentioned display device, the connecting 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 an embodiment of the above-mentioned display device, there is a gap between the connecting block and the second panel.

In an embodiment of the aforementioned 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 connecting 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 connecting block and the second panel side is greater than the connecting block and The distance to the side of the backlight module.

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

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

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

In an embodiment of the above-mentioned 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 connecting block is a solid block formed by light curing or thermal curing of the adhesive.

In an embodiment of the above-mentioned display device, there is an air layer 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 to external forces of the display device by arranging the connecting block adhered to the first panel and the backlight module, especially enhancing the adhesion between the first panel and the backlight module, and avoids The two sides of the display module are separated or loosened by external force.

The following describes the present invention in detail with reference to the accompanying 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’‧‧‧Connecting block

150a, 150b‧‧‧Sub connection block

151‧‧‧lower surface

152‧‧‧Upper surface

101‧‧‧Upper polarizer

102‧‧‧Optical glue

102a‧‧‧Extension convex part

102b‧‧‧Notch

103‧‧‧Down Polarizer

104‧‧‧Double-sided tape

105‧‧‧Adhesive 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 an embodiment of the display device of the present invention with the first panel removed 4 is a schematic top view of an embodiment of the display device of the present invention with the first panel removed; FIG. 5 is a schematic partial cross-sectional view of an embodiment of the display device of the present invention; FIG. 6 is a schematic view of a display device of the present invention Fig. 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 the 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 schematic partial cross-sectional 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 not as a limitation of the protection scope of the appended claims of the present invention.

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

In the specification and subsequent claims, certain words are used to refer to specific components or components. Those of ordinary skill in the art should understand that technical users or manufacturers can refer to the same component or component with different terms or terms. . This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in functions of components or parts as a criterion. The "including" and "including" mentioned in the entire specification and the subsequent claim items are open-ended terms and should be interpreted as "including but not limited to". In addition, the term "connected" 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", "rear", "left", "right", "vertical" appear The orientation or positional relationship indicated by “straight”, “horizontal”, “top”, “bottom”, “inner” and “outer” are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the utility model 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 convenience of clear description, the terms "first", "second", "third", "fourth" and the like mentioned herein are used to refer to an element, region, or part that is the same or similar to another element or region. , Parts are distinguished, not to limit specific elements, regions, or parts.

As shown in FIGS. 1 to 3, FIG. 1 is a schematic top view of the 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. A schematic top view of the panel structure. 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. Wherein, 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 schematic partial cross-sectional view of AA in FIG. The panel 110, the second panel 120, and the backlight module 130 are stacked from top to bottom. Wherein, 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, and 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 side Optical plates such as polarizers and lower polarizers can also be attached between the plates 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 bonding an upper substrate 121 and a lower substrate 122 through a plastic frame 123. At the same time, the upper layer of the display module can be attached with a polarizer 101 and pass through The optical glue 102 is bonded 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 bonded to the backlight module 130 through the double-sided tape 104.

The display device 100 of the present invention further includes a connecting block 150, which is adhered to the first panel 110, and the connecting block 150 is adhered to the backlight module 130, that is, the connecting block 150 is adhered to the first panel 110 and the backlight module 130 Thereby, the adhesion between the first panel 110 and the backlight module 130 is enhanced. When the opposite external force is simultaneously applied to the first panel 110 and the backlight module 130, 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 , Instead of directly acting on the adhesive force formed by the rubber 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 connecting block 150 adhered between the first panel 110 and the backlight module 130 is arranged, so that the first panel 110, the connecting block 150 and the backlight module 130 form a whole. The second panel 120 in the middle plays a protective role. The arrangement of the connecting block 150 increases the peeling of the upper substrate 121 and the lower substrate of the second panel 120 The required value of the external force 122 can prevent the upper substrate 121 and the lower substrate 122 of the second panel 120 from being separated or loosened by external force to a certain extent.

As shown in FIG. 3, the connecting 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 connecting 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 connecting 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 5 at the same time, there is an air layer between the first panel 110 and the flexible circuit board 140, that is, there is no adhesive layer between the flexible circuit board 140 and the first panel 110 and there is a gap.

In one embodiment, as shown in FIG. 4, the connecting 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 connecting block 150.

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

In one embodiment, as shown in FIG. 5, the connecting block 150 further includes a lower surface 151, and the lower surface 151 of the connecting block 150 is bonded 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 tape 104. Among them, the double-sided tape 104 is, for example, a light-shielding double-sided tape with a light-shielding function.

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

The distance P1 provided between the connecting block 150 and the second panel 120 can avoid problems such as friction between the connecting block 150 and the second panel 120 or leakage of glue to the second panel 120.

In one embodiment, the connecting 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 connecting block 150. As shown in FIG. 6, the connecting block 150 can be flush with the side 130 a of the backlight module 130.

The connecting block 150 of the present invention may be a solid block made of a non-sticky material, such as PET (Polyethylene terephthalate), rubber, or other materials. The connection block 150 is made of a material with a fixed shape. The bonding area of the upper and lower surfaces of the connection block 150 can be determined according to the required bonding force, and then the size of the connection block 150 can be determined. It can also be based on the size of the flexible circuit board 140 on one or both sides. The area of the exposed area determines the size of the connecting block 150, which not only has a neat shape but also a controllable attachment area to avoid glue overflow and height inequality. In addition, in the present invention, a material with a fixed shape is used to make the connecting block 150, and the effect of aligning with the side of the backlight module 130 is better.

As shown in FIG. 6, the connecting block 150 includes an upper surface 152. In one embodiment, the upper surface 152 can be adhered to the first surface by providing an adhesive layer 105. On panel 110. In other words, the adhesive layer 105 can be prepared according to the size of the upper surface 152 of the connecting block 150 to save materials.

In other embodiments, as shown in FIGS. 7 and 8, the upper surface 152 of the connecting block 150 is bonded to the first panel 110 through the optical glue 102 provided between the first panel 110 and the second panel 120. In detail, the optical glue 102 includes at least one extension protrusion 102a, and the extension protrusion 102a extends above the connection block 150. In this embodiment, the extension protrusion 102a covers the upper surface 152 of the connection block 150, so that the connection block The upper surface 152 of the 150 is adhered to the first panel 110 through the extension protrusion 102 a of the optical glue 102.

Please refer to FIGS. 3, 7 and 8 at the same time. Both sides of the optical glue 102 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, there is no need to separately prepare glue for the connecting block in advance, which simplifies the process steps. On the contrary, the optical glue 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 and the optical glue 102 from adhering, which affects its subsequent bending and installation.

In addition, the connecting block of the present invention may be a solid block formed by light curing or thermal curing of the adhesive. Please refer to FIG. 3 and FIG. 9 at the same time. The glue dots are placed on the area of the backlight module 130 that is not covered by the flexible circuit board 140 by glue dispensing, that is, glue can be glued on one or both sides of the flexible circuit board 140. After that, the first panel 110 is attached so that the first panel 110 is in direct contact with the glue and bonded. The connecting block 150' in the form of a solid block is formed after light curing or thermal curing of the colloid. At this time, the connecting block 150' is connected to the first panel 110 and the backlight module 130 bonding forms a unified whole. The difference between this embodiment and the embodiment shown in FIG. 5 lies in the form of the connecting block.

Please refer to FIGS. 8 and 10 at the same time. In this embodiment, the optical glue 102 includes at least one extension protrusion 102a, and the extension protrusion 102a extends above the connecting block 150'. Since the connecting block 150' is inherently adhesive, it can increase the adhesive force with the extended convex portion 102a of the optical glue.

本發明所附的請求項的保護範圍。 Of course, the present invention can also have various other embodiments. 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 scope of protection of the appended claims of the present invention.

120‧‧‧Second panel

120a‧‧‧Second panel side

130‧‧‧Backlight Module

130a‧‧‧Backlight module side

140‧‧‧Flexible circuit board

150‧‧‧Connecting block

150a, 150b‧‧‧Sub connection block

P1、P2‧‧‧Distance

Claims (13)

A display device includes: a first panel; a second panel attached to the first panel; a backlight module; the second panel is arranged between the first panel and the backlight module; and a connecting block is attached 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 on the backlight The orthographic projection on the module and the orthographic projection of the flexible circuit board on the backlight module do not overlap. The display device according to claim 1, wherein 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. The display device according to claim 1, wherein the connection block further includes two sub-connection blocks, which are respectively located on two sides of the flexible circuit board. The display device according to claim 1, wherein the connecting block further includes a lower surface, the backlight module includes a double-sided adhesive tape, and the lower surface and the second panel are respectively adhered to the double-sided adhesive tape. The display device according to claim 1, wherein there is a gap between the connecting block and the second panel. The display device according to claim 1, wherein the connecting block is flush with at least one side of the backlight module. The display device according to claim 1, wherein the connecting block is located between a side of a second panel of the second panel and a side of a backlight module of the backlight module, wherein the connecting block is connected to a side of the second panel The distance 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 connecting block is a solid block made of non-sticky material. The display device according to claim 8, wherein the connecting block further includes 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 8, which further includes an optical glue disposed between the first panel and the second panel, the optical glue includes an extended convex portion, the connecting block includes an upper surface, and the upper surface The surface is adhered to the first panel through the extending convex portion. The display device according to claim 10, wherein the optical glue has a groove portion, and the groove portion is located above the flexible circuit board. The display device according to claim 1, wherein the connecting block is a solid block formed by light curing or thermal curing of the adhesive. The display device according to claim 1, wherein there is an air layer between the first panel and the flexible circuit board.

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