TW202032220A - Display device - Google Patents

Abstract

A display device includes a cell module, a backlight module, and an adhesive structure. The adhesive structure is located between the cell module and the backlight module and has an annular contact surface contacting the cell module. The annular contact surface has an annular adhesive zone and at least one adhesive-free zone joined with each other. The annular adhesive zone surrounds an inner edge of the annular contact surface and adheres cell module. The adhesive-free zone is joined with an outer edge of the annular contact surface and located at a corner of the annular contact surface.

Description

Display device

The present disclosure relates to a display device.

The backlight module is one of the key components of the liquid crystal display. Since the panel module of the liquid crystal display does not have the ability to emit light, the function of the backlight module is to supply sufficient brightness and uniformly distributed light sources so that the liquid crystal display can display images normally.

Generally speaking, when assembling the panel module and the backlight module of the liquid crystal display, a double-sided adhesive tape is used to attach between the lower polarizer at the bottom of the panel module and the plastic frame of the backlight module. , So that the panel module and the backlight module are bonded to each other.

However, when the assembler makes mistakes in the process of assembling the panel module and the backlight module, or the assembled product is judged as defective in the subsequent quality control stage, the panel module and the backlight module are forced to separate, which often results in The panel module and/or the backlight module are damaged (for example, the plastic frame is deformed, the optical film of the backlight module is scratched, the glass chip of the panel module... etc.) and the problem cannot be reworked. As a result, the manufacturing cost of the liquid crystal display cannot be reduced. Therefore, the development of a technology that does not cause damage to the panel module and/or the backlight module during the heavy industry stage is a topic that the industry must invest in discussion and research without delay.

In order to solve the problems of the conventional technology, one embodiment of the present disclosure provides a display device, which includes a panel module, a backlight module, and an adhesive structure. The adhesive structure is located between the panel module and the backlight module, and has an annular contact surface that contacts the panel module. The annular contact surface has adjacent annular glue areas and at least one glue-free area. The annular glue area surrounds the inner edge of the annular contact surface, and the panel module is glued. The glue-free area is adjacent to the outer edge of the annular contact surface and is located at the corner of the annular contact surface.

In some embodiments, the annular contact surface further has another glue-free area adjacent to the outer edge of the annular contact surface.

In some embodiments, the annular contact surface further has another glue-free area adjacent to the inner edge of the annular contact surface.

In some embodiments, the annular contact surface further has another glue-free area located between the outer edge and the inner edge of the annular contact surface.

In some embodiments, the aforementioned glue-free zone and the aforementioned another glue-free zone are separated by an annular glue zone.

In some embodiments, the annular glue zone alternately adjoins the outer edge and the inner edge of the annular contact surface.

In some embodiments, at least a part of the annular glue area is wavy or jagged.

In some embodiments, the adhesive structure includes a base layer and an adhesive layer. The base layer is located between the panel module and the backlight module. The adhesive layer is arranged on the side of the base layer facing the panel module and adheres the panel module.

In some embodiments, the adhesive structure further includes another adhesive layer. The other adhesive layer is arranged on the side of the base layer facing the backlight module and adheres the backlight module.

In some embodiments, the adhesive structure includes an adhesive layer and at least one non-adhesive layer. The adhesive layer is bonded between the panel module and the backlight module. The at least one non-adhesive layer is arranged on the side of the adhesive layer facing the panel module and contacts the panel module.

In summary, in the display device of the present disclosure, the annular contact surface of the adhesive structure not only has the annular glue area for bonding the panel module, but also has a glue-free area (that is, the annular glue area is not full The entire annular contact surface) is adjacent to the outer edge of the annular contact surface and is located at the corner of the annular contact surface. Therefore, when the display device is reworked, it is only necessary to slightly press the side wall of the plastic frame of the backlight module, and the panel module can easily float, which is beneficial for the panel module to be separated from the adhesive structure, so that the rework is more convenient. In addition, by increasing the number of adhesive-free areas and evenly distributing them, the adhesive structure of the present disclosure can also reduce the deformation of the plastic frame and the panel module during heavy work, which can not only further protect the panel module and the backlight module, but also Greatly reduce the factors that cause the variation of the backlight module.

100‧‧‧Display device

110‧‧‧Panel Module

120‧‧‧Backlight Module

121‧‧‧Plastic frame

122‧‧‧Light guide plate

123‧‧‧Optical film

124‧‧‧Reflective sheet

130、230‧‧‧Adhesive structure

130A, 130B, 130C, 130D, 130E, 130F, 130G‧‧‧Annular contact surface

130a1, 130b1, 130c1, 130d1, 130e1, 130f1, 130g1‧‧‧Annular adhesive zone

130a2, 130b2, 130c2, 130d2, 130e2, 130f2, 130g2‧‧‧Glue-free area

131‧‧‧Base layer

131a, 132a, 231a, 232a‧‧‧Top surface

132、133、231‧‧‧Adhesive layer

232‧‧‧Non-adhesive layer

C‧‧‧corner

IE‧‧‧Inner edge

OE‧‧‧Outer edge

FIG. 1 is a schematic partial cross-sectional view of a display device according to some embodiments of the present disclosure.

Figure 2 is a top view of the annular contact surface according to some embodiments of the present disclosure.

Figure 3 is a top view of the annular contact surface according to some embodiments of the present disclosure.

FIG. 4 is a top view of the annular contact surface according to some embodiments of the present disclosure.

Figure 5 is a top view of the annular contact surface according to some embodiments of the present disclosure.

Fig. 6 is a top view of the annular contact surface according to some embodiments of the present disclosure.

Figure 7 is a top view of the annular contact surface according to some embodiments of the present disclosure.

Fig. 8 is a top view of the annular contact surface according to some embodiments of the present disclosure.

FIG. 9 is a schematic partial longitudinal sectional view of an adhesive structure according to some embodiments of the present disclosure.

FIG. 10 is a schematic partial longitudinal sectional view of an adhesive structure according to some embodiments of the present disclosure.

Hereinafter, multiple implementations of the disclosure will be disclosed in schematic form. For the sake of clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the content of this disclosure. That is to say, in some implementations of the present disclosure, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventionally used structures and elements will be shown in a simple schematic manner in the drawings.

When an element is called "on", it can generally mean that the element is directly on other elements, or there can be other elements existing in both. Conversely, when an element is said to be "directly in" another element, it cannot have other elements in between.

As used herein, "about" or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by a person of ordinary skill in the art, taking into account the measurement in question and the error associated with the measurement A certain number (ie, the limit of the measurement system). For example, "about" or "substantially" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%.

Please refer to Figure 1 and Figure 2. FIG. 1 is a schematic partial cross-sectional view of a display device 100 according to some embodiments of the present disclosure. FIG. 2 is a top view of the annular contact surface 130A according to some embodiments of the present disclosure. As shown in FIGS. 1 and 2, in some embodiments, the display device 100 includes a panel module 110, a backlight module 120, and an adhesive structure 130. The panel module 110 includes a transparent substrate located in the center (for example, a thin film transistor glass substrate and a color filter glass substrate), and an upper polarizer and a lower polarizer located above and below the transparent substrate (for the sake of simplicity and clarity) No component symbols are marked). It can be seen that the panel module 110 takes a liquid crystal display panel as an example, but the disclosure is not limited to this.

As shown in FIGS. 1 and 2, the backlight module 120 of the display device 100 includes a plastic frame 121, a light guide plate 122, an optical film 123 and a reflective sheet 124. The light guide plate 122, the optical film 123 and the reflective film 124 surround the plastic frame 121. The reflective sheet 124 is located at the bottom of the plastic frame 121. The light guide plate 122 is located on the reflective sheet 124 square. The optical film 123 is located above the light guide plate 122. The panel module 110 is located above the optical film 123. The backlight module 120 also includes a light source (not shown), which is configured to emit light into the light guide plate 122 and be reflected by the reflective sheet 124 to pass through the optical film 123 and the panel module 110 in sequence, so as to be viewed by the user The function of the display screen.

As shown in FIGS. 1 and 2, the adhesive structure 130 of the display device 100 is located between the panel module 110 and the backlight module 120, and has a ring-shaped contact surface 130A that contacts the panel module 110. The annular contact surface 130A has an adjacent annular glue area 130a1 and a glue-free area 130a2. The annular glue area 130a1 surrounds the inner edge IE of the annular contact surface 130A, and the panel module 110 is bonded. The annular adhesive area 130a1 can be made of a non-transmissive material, and since it is a closed ring, it can effectively shield light, thereby solving the problem of light leakage of the backlight module 120 at the edge.

In particular, the glue-free area 130a2 is adjacent to the outer edge OE of the annular contact surface 130A, and is located at the corner C of the annular contact surface 130A. With this configuration, when the display device 100 needs heavy work, the assembler only needs to slightly press the side wall of the plastic frame 121 of the backlight module 120 to separate the panel module 110 from the adhesive structure 130, making the panel module 110 easier Floating, so heavy industry is more convenient.

Returning to the embodiment shown in FIG. 2 again, the annular contact surface 130A has four corners C, and the four glue-free areas 130a2 are located at the four corners C, respectively. Therefore, for the assembler, any corner C of the annular contact surface 130A is suitable as a peeling point for peeling the panel module 110 from the adhesive structure 130, but the disclosure is not limited thereto. In some other embodiments, only one or more of the aforementioned four glue-free regions 130a2 can be retained elastically.

Please refer to Figure 3, which shows some implementations according to this disclosure The top view of the annular contact surface 130B of the formula. Compared with the embodiment shown in Figure 2, the annular contact surface 130B in Figure 3 still has a glue-free area 130a2 at the corner C, and also has a plurality of glue-free areas 130b2 adjacent to the annular contact surface 130B. The outer edge OE and the annular glue area 130b1. By increasing the number of the glue-free areas 130b2 and evenly distributing them on the outer edge OE of the annular contact surface 130B, the adhesive structure 130 of the present disclosure can reduce the deformation of the glue frame 121 and the panel module 110 during heavy work.

Please refer to FIG. 4, which is a top view of the annular contact surface 130C according to some embodiments of the present disclosure. Compared with the embodiment shown in Figure 2, the annular contact surface 130C in Figure 4 still has the glue-free area 130a2 at the corner C, and also has a plurality of glue-free areas 130c2 adjacent to the annular contact surface 130C. Inner edge IE and annular glue area 130c1. By increasing the number of adhesive-free areas 130c2 and evenly distributed on the inner edge IE of the annular contact surface 130C, the adhesive structure 130 of the present disclosure can also reduce the deformation of the plastic frame 121 and the panel module 110 during heavy work.

Please refer to FIG. 5, which is a top view of the annular contact surface 130D according to some embodiments of the present disclosure. Compared with the embodiment shown in Figure 2, the annular contact surface 130D in Figure 5 has a plurality of adhesive-free areas 130d2 adjacent to the outer edge of the annular contact surface 130D in addition to the glue-free area 130a2 at the corner C OE and inner edge IE and annular glue area 130d1. By increasing the number of glue-free areas 130d2 and evenly distributed on the outer edge OE and inner edge IE of the annular contact surface 130D, the adhesive structure 130 of the present disclosure can also reduce the degree of deformation of the plastic frame 121 and the panel module 110 during heavy work. . In addition, in order to make the adhesive structure 130 apply the adhesive force to the panel module 110 between the outer edge OE and the inner edge of the annular contact surface 130D The edge IE is relatively even, and the annular glue area 130d1 can be alternately adjacent to the outer edge OE and the inner edge IE of the annular contact surface 130D as shown in FIG. 5.

In some embodiments, in order to achieve a better balance between "enable the adhesive structure 130 to provide sufficient adhesion to the panel module 110 during assembly" and "enable the panel module 110 to be easily peeled off from the adhesive structure 130 during heavy work", you can The area ratio of the annular adhesive area and the non-adhesive area in each of the foregoing embodiments is appropriately adjusted to about 50%, but the present disclosure is not limited to this.

Returning to FIG. 5, except for the glue-free area 130a2 at the corner C of the annular contact surface 130D which is L-shaped, the other glue-free areas 130d2 are all rectangular, but the disclosure is not limited to this.

Please refer to FIG. 6, which is a top view of the annular contact surface 130E according to some embodiments of the present disclosure. Compared with the embodiment shown in FIG. 5, the shapes of the annular glue area 130e1 and the glue-free area 130e2 in FIG. 6 have been modified so that the annular glue area 130e1 is wavy. The wavy exterior design can also achieve the purpose of making the adhesive force applied by the adhesive structure 130 to the panel module 110 more even on the outer edge OE and the inner edge IE of the annular contact surface 130E. In practical applications, the annular glue area 130e1 may only be partially wavy.

Please refer to FIG. 7, which is a top view of the annular contact surface 130F according to some embodiments of the present disclosure. Compared with the embodiment shown in FIG. 5, the shapes of the annular glue area 130f1 and the glue-free area 130f2 in FIG. 7 have been modified, so that the annular glue area 130f1 has a zigzag shape. The zigzag shape design can also achieve the purpose of making the adhesive force applied by the adhesive structure 130 to the panel module 110 more even on the outer edge OE and the inner edge IE of the annular contact surface 130F. In practical applications, the annular glue area 130f1 may only be partially serrated.

Please refer to FIG. 8, which is a top view of the annular contact surface 130G according to some embodiments of the present disclosure. Compared with the embodiment shown in Figure 2, the annular contact surface 130G in Figure 8 in addition to the glue-free area 130a2 at the corner C also has a plurality of glue-free areas 130g2 located on the outer edge of the annular contact surface 130A Between OE and the inner edge IE and adjacent to the annular glue area 130g1. By increasing the number of glue-free areas 130g2 and evenly distributing them between the outer edge OE and the inner edge IE of the annular contact surface 130G, the adhesive structure 130 of the present disclosure can also reduce the heavy work of the plastic frame 121 and the panel module 110 Deformation.

In practical applications, in addition to the glue-free areas located at the corners of the annular contact surface of the foregoing embodiments, additional glue-free areas can be added to adjoin the outer edge of the annular contact surface, adjacent to the inner edge of the annular contact surface, and located at Between the outer edge and the inner edge of the annular contact surface or any combination of the foregoing.

Please refer to FIG. 9, which is a schematic partial longitudinal cross-sectional view of the adhesive structure 130 according to some embodiments of the present disclosure. As shown in FIG. 9, the adhesive structure 130 includes a base layer 131 and adhesive layers 132 and 133. Please refer to FIG. 1 together, the base layer 131 is located between the panel module 110 and the backlight module 120. The adhesive layer 132 is disposed on the side of the base layer 131 facing the panel module 110 and adheres to the panel module 110. The adhesive layer 133 is disposed on the side of the base layer 131 facing the backlight module 120 and adheres the plastic frame 121 and the optical film 123 of the backlight module 120. Among them, the base layer 131 can be made of a non-adhesive material, so the part of the top surface 131a exposed by the adhesive layer 132 can be used as the glue-free area of the annular contact surface of the foregoing embodiments, and the top surface 132a of the adhesive layer 132 can be As the annular glue area of the annular contact surface of the aforementioned embodiments. Since the adhesive structure 130 in Figure 9 has two adhesive layers 132, the adhesiveness of the two adhesive layers 132 can be changed elastically (For example, using different materials) to increase the applicability of the adhesive structure 130.

Please refer to FIG. 10, which is a schematic partial longitudinal sectional view of the adhesive structure 230 according to some embodiments of the present disclosure. As shown in FIG. 10, the adhesive structure 230 includes an adhesive layer 231 and at least one non-adhesive layer 232. Please refer to FIG. 1 together, the adhesive layer 231 is bonded between the panel module 110 and the backlight module 120 (ie, the plastic frame 121 and the optical film 123). The at least one non-adhesive layer 232 is disposed on the side of the adhesive layer 231 facing the panel module 110 and contacts the panel module 110. Wherein, the top surface 232a of the at least one non-adhesive layer 232 can be used as the glue-free area of the annular contact surface of the foregoing embodiments, and the top surface 231a of the adhesive layer 231 exposed by the non-adhesive layer 232 can be used as the aforementioned each embodiment The ring-shaped adhesive area of the ring-shaped contact surface. Compared with the three-layer structure of the adhesive structure 130 in FIG. 9, the adhesive structure 230 of FIG. 10 has a two-layer structure, so the thickness of the adhesive structure 230 can be effectively reduced, which is beneficial to the thinning of the display device 100.

From the above detailed description of the specific embodiments of the present disclosure, it can be clearly seen that in the display device of the present disclosure, the annular contact surface of the adhesive structure not only has the annular glue area for bonding the panel module, but also There is a glue-free area (that is, the annular glue area does not occupy the entire annular contact surface) adjacent to the outer edge of the annular contact surface and located at the corner of the annular contact surface. Therefore, when the display device is reworked, it is only necessary to slightly press the side wall of the plastic frame of the backlight module, and the panel module can easily float, which is beneficial for the panel module to be separated from the adhesive structure, so that the rework is more convenient. In addition, by increasing the number of adhesive-free areas and evenly distributing them, the adhesive structure of the present disclosure can also reduce the deformation of the plastic frame and the panel module during heavy work, which can not only further protect the panel module and the backlight module, but also Greatly reduce the factors that cause the variation of the backlight module.

Although the content of this disclosure has been disclosed in a variety of ways as above, it is not intended to limit the content of this disclosure. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the content of this disclosure. Therefore, The scope of protection of the contents of this disclosure shall be subject to those defined by the attached patent scope.

130D‧‧‧Annular contact surface

130d1‧‧‧Annular adhesive zone

130a2, 130d2‧‧‧Glue-free area

C‧‧‧corner

IE‧‧‧Inner edge

OE‧‧‧Outer edge

Claims (10)

A display device includes: a panel module; a backlight module; and an adhesive structure, located between the panel module and the backlight module, and having an annular contact surface contacting the panel module, wherein the annular contact The surface has an adjacent annular glue area and a glue-free area. The annular glue area surrounds the inner edge of the annular contact surface and adheres to the panel module. The glue-free area is adjacent to the outer edge of the annular contact surface , And located at a corner of the annular contact surface. In the display device described in item 1 of the scope of patent application, the annular contact surface further has another glue-free area adjacent to the outer edge of the annular contact surface. In the display device described in item 1 of the scope of patent application, the annular contact surface further has another glue-free area adjacent to the inner edge of the annular contact surface. In the display device described in item 1 of the scope of patent application, the annular contact surface further has another glue-free area located between the outer edge and the inner edge of the annular contact surface. The display device according to any one of items 2 to 4 in the scope of patent application, wherein the glue-free area and the other glue-free area are divided by the annular glue area Separated. As for the display device described in item 1 of the scope of patent application, the annular glue area is alternately adjacent to the outer edge and the inner edge of the annular contact surface. According to the display device described in item 1 of the scope of patent application, at least a part of the annular glue area is wavy or jagged. The display device according to claim 1, wherein the adhesive structure includes: a base layer located between the panel module and the backlight module; and an adhesive layer disposed on the base layer facing the panel mold On one side of the group, and glue the panel module. According to the display device described in claim 8, wherein the adhesive structure further comprises: another adhesive layer disposed on the side of the base layer facing the backlight module and bonding the backlight module. The display device described in claim 1, wherein the adhesive structure includes: an adhesive layer bonded between the panel module and the backlight module; and at least one non-adhesive layer disposed on the adhesive layer facing On one side of the panel module and contact the panel module.

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