Display module and terminal equipment

Abstract

The utility model relates to a display module and terminal equipment, and the display module comprises a backlight assembly which is used for providing a light source; the display panel is arranged on the light emitting side of the backlight assembly; the display panel comprises an optical function layer, the optical function layer is arranged opposite to the light emitting side of the backlight assembly, the optical function layer comprises a display area and a lap joint area, and one side of the lap joint area is connected with the light emitting side; the display panel further comprises an integrated circuit area and a projection on an extension plane perpendicular to the display panel, the lap joint area is located between the integrated circuit area and the display area, the lap joint area is provided with a receding area opposite to the integrated circuit area and an extension area adjacent to the receding area, and the extension area extends out towards the side away from the display area compared with the receding area. By arranging the extension part, the area of the lap joint area is effectively increased, namely, the contact area of the optical function layer and the light emitting side of the backlight assembly is increased, and then the risk of glue failure stripping between the display panel and the backlight assembly is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of liquid crystal display screens, and in particular to a display module and a terminal device. Background Art

[0002] In the existing LCD (Liquid Crystal Display) structure, most of them include a display panel and a backlight assembly. The backlight assembly provides light source for the display panel, and the lower polarizer in the display panel is bonded to the backlight assembly by light-shielding adhesive. As the screen of terminal equipment is developing towards extremely narrow bezels, the overlap width between the lower polarizer and the light-shielding adhesive becomes narrower, and the risk of debonding between the display panel and the backlight assembly increases. Utility Model Content

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a display module and a terminal device.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a display module, including:

[0005] A backlight assembly, the backlight assembly is used to provide a light source;

[0006] A display panel, the display panel being arranged on the light emitting side of the backlight assembly;

[0007] The display panel includes an optical function layer, the optical function layer is arranged opposite to the light emitting side of the backlight assembly, the light source provided by the backlight assembly is incident on the display panel through the optical function layer, the optical function layer includes a display area and an overlap area, and one side of the overlap area is connected to the light emitting side;

[0008] The display panel also includes an integrated circuit area. In its projection on an extension plane perpendicular to the display panel, the overlap area is located between the integrated circuit area and the display area. The overlap area has a yield area opposite to the integrated circuit area and an extension area adjacent to the yield area. The extension area protrudes toward a side away from the display area compared to the yield area.

[0009] In some embodiments, in a projection on an extension plane perpendicular to the display panel, a preset gap b is left between the clearance area and the integrated circuit area.

[0010] In some embodiments, the preset gap b is 0.05 mm to 10 mm.

[0011] In some embodiments, in a projection on an extension plane perpendicular to the display panel, a shape of the clearance area matches a shape of the integrated circuit area.

[0012] In some embodiments, the extension area protrudes out a preset length d toward a side away from the display area;

[0013] The preset length d is 0.05 mm to 10 mm.

[0014] In some embodiments, the number of extension regions is multiple.

[0015] In some embodiments, the plurality of extension areas extend outwardly from the display area by the same preset length d.

[0016] In some embodiments, the plurality of extension areas are respectively located on two opposite sides of the clearance area.

[0017] In some embodiments, the optically functional layer includes a lower polarizer.

[0018] In some embodiments, the display panel further includes a bonding member, and the bonding member is disposed on a side of the overlapping region facing the backlight assembly to bond the overlapping region to the backlight assembly.

[0019] In some embodiments, a side where the adhesive member is bonded to the overlapping area is provided with a plurality of protrusions or depressions, and a side where the overlapping area is bonded to the adhesive member is provided with a plurality of depressions or protrusions.

[0020] In some embodiments, the adhesive comprises a light shielding glue.

[0021] In some embodiments, the integrated circuit region is disposed near a middle portion of one end of the display panel.

[0022] In some embodiments, there are multiple integrated circuit regions, and more than two of the integrated circuit regions are arranged along one edge of the display panel;

[0023] There are a plurality of the making way areas, and the making way areas are arranged in one-to-one correspondence with the integrated circuit areas.

[0024] According to a second aspect of an embodiment of the present disclosure, a terminal device is provided, characterized in that it includes:

[0025] The display module described in any one of the first aspects above;

[0026] A display driver chip is directly press-welded to the integrated circuit area, or is press-welded to the integrated circuit area through a flexible circuit.

[0027] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: by setting the extension portion, the area of ​​the overlapping area is effectively increased, that is, the contact area between the optical functional layer and the light-emitting side of the backlight assembly is increased, thereby reducing the risk of debonding between the display panel and the backlight assembly.

[0028] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] Figure 1 is a schematic structural diagram of a display module according to an exemplary embodiment;

[0031] Figure 2 is a schematic cross-sectional structure diagram of a display module according to an exemplary embodiment;

[0032] Figure 3 It is a schematic diagram of the front structure of a liquid crystal display screen in the prior art;

[0033] Figure 4 is a schematic structural diagram of a display module according to another exemplary embodiment;

[0034] Figure 5 is a schematic structural diagram of a display module according to another exemplary embodiment;

[0035] Figure 6 is a schematic structural diagram of a display module according to another exemplary embodiment;

[0036] Figure 7 is a schematic structural diagram of a display module according to another exemplary embodiment.

[0037] Reference numerals:

[0038] 1. Backlight assembly;

[0039] 2. Display panel; 21. Optical functional layer; 211. Display area; 212. Overlap area; 2121. Give way area; 2122. Extension area; 22. Adhesive; 23. Integrated circuit area; 231. Display driver chip. DETAILED DESCRIPTION

[0040] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0041] In the existing LCD (Liquid Crystal Display) structure, most of them include a display panel 2 and a backlight assembly 1, such as Figure 2 and Figure 3 As shown, the display panel 2 and the backlight assembly 1 are stacked, the backlight assembly 1 provides a light source for the display panel 2, and the lower polarizer in the display panel 2 is bonded to the backlight assembly 1 by a light-shielding adhesive. Among them, one side of the lower polarizer is provided with the remaining functional layers in the display panel 2, and the display driver chip 231 is directly or through a flexible circuit board. Pressure welding to the remaining functional layers; the other side of the lower polarizer is bonded to the backlight assembly 1 by a light-shielding adhesive. As the screen of the terminal device is developing towards the direction of extremely narrow frame, the black edge of the screen edge (i.e. Figure 2 The middle width a) is also getting narrower, which leads to the overlap width between the lower polarizer and the light-shielding glue (i.e. Figure 2 The middle width e) becomes narrower, and in order to ensure that the high temperature during the pressure welding process will not affect the lower polarizer and avoid problems such as failure of the lower polarizer, the lower polarizer is usually retracted, that is, the end of the lower polarizer adjacent to the semiconductor element is retracted to avoid the heat-affected zone during pressure welding of the semiconductor element. The resulting problem is that the overlap width between the lower polarizer and the light-shielding glue is further compressed, resulting in an increased risk of debonding between the display panel 2 and the backlight assembly 1.

[0042] In order to solve the above technical problems, the present disclosure provides a display module and a terminal device. Figure 1 is a schematic structural diagram of a display module according to an exemplary embodiment. Figure 2 is a schematic cross-sectional structure diagram of a display module according to an exemplary embodiment; Figure 1 and Figure 2 As shown, the display module includes: a backlight assembly 1, which is used to provide a light source; a display panel 2, which is arranged on the light-emitting side of the backlight assembly 1; the display panel 2 includes an optical functional layer 21, which is arranged opposite to the light-emitting side of the backlight assembly 1, and the light source provided by the backlight assembly 1 is incident on the display panel 2 through the optical functional layer 21, and the optical functional layer 21 includes a display area 211 and an overlapping area 212, and one side of the overlapping area 212 is connected to the light-emitting side; the display panel 2 also includes an integrated circuit area 23, and in the projection on the extension plane perpendicular to the display panel 2, the overlapping area 212 is located between the integrated circuit area 23 and the display area 211, and the overlapping area 212 has a yield area 2121 opposite to the integrated circuit area 23 and an extension area 2122 adjacent to the yield area 2121, and the extension area 2122 protrudes toward the side away from the display area 211 compared with the yield area 2121.

[0043] In the embodiment of the present disclosure, the optical functional layer 21 is arranged on the side of the display panel 2 facing the backlight assembly 1, and the integrated circuit area 23 is arranged on the functional layers of the display panel 2 except the optical functional layer 21. The optical functional layer 21 includes a display area 211 and an overlap area 212. The overlap area 212 is connected to the light-emitting side of the backlight assembly 1 on the side facing the backlight assembly 1, wherein the overlap area 212 has a yield area 2121, so that the optical functional layer 21 can avoid the integrated circuit area 23 to avoid affecting the optical functional layer 21 during the pressure welding process, and the overlap area 212 has an extension area 2122. Compared with the existing method, that is, Figure 3 In order to avoid the integrated circuit area 23 by reducing the width of the overlapping area 212, the present invention effectively increases the area of ​​the overlapping area 212 by setting an extension portion, that is, increases the contact area between the optical functional layer 21 and the light-emitting side of the backlight assembly 1, thereby reducing the risk of debonding between the display panel 2 and the backlight assembly 1.

[0044] In some embodiments, the display panel 2 includes functional layers such as an upper polarizer, a lower polarizer, a glass substrate, and an alignment film, and each functional layer is stacked, wherein the optical functional layer 21 is a functional layer in the display panel 2 adjacent to the backlight assembly 1 .

[0045] In some embodiments, the optical functional layer 21 includes a lower polarizer, and the integrated circuit region 23 is located in other functional layers except the lower polarizer.

[0046] In the embodiment of the present disclosure, the display panel 2 also includes an adhesive member 22, which is arranged on the side of the overlapping area 212 facing the backlight assembly 1, and bonds the overlapping area 212 to the backlight assembly 1, that is, the optical functional layer 21 is bonded to the backlight assembly 1 through the adhesive member 22. The connection method is relatively simple, which effectively reduces the production cost.

[0047] That is to say, the overlapping area 212 and the extending area 2122 thereof are bonded to the backlight assembly 1 through the adhesive member 22 .

[0048] In some embodiments, a plurality of protrusions or depressions are provided on one side where the adhesive member 22 is bonded to the overlapping area 212, and a plurality of depressions or protrusions are provided on one side where the overlapping area 212 is bonded to the adhesive member 22, so as to increase the contact area between the adhesive member 22 and the overlapping area 212, thereby improving the bonding strength between the adhesive member 22 and the overlapping area 212.

[0049] In some embodiments, the adhesive 22 includes a light shielding glue.

[0050] In the embodiments of the present disclosure, Figure 1 As shown, in the projection on the extension plane perpendicular to the display panel 2, a preset gap b is left between the clearance area 2121 and the integrated circuit area 23 to avoid the heat affected zone generated during pressure welding.

[0051] In some embodiments, the preset gap b is 0.05 mm to 10 mm.

[0052] In the embodiment of the present disclosure, the overlapping area 212 is close to at least one edge of the optical functional layer 21 .

[0053] In some embodiments, the main body of the overlapping area 212 is in the shape of an elongated strip, and the clearance area 2121 is opened on one side of the overlapping area 212 in the width direction. In other words, the projection of the main body of the optical functional layer 21 in the direction perpendicular to the plane where the display panel 2 is located covers part of the integrated circuit area 23, and the clearance area 2121 is located at the edge of the optical functional layer 21, and the clearance area 2121 is formed by shrinking a concave notch inward in the direction close to the display area 211, and the shape of the formed clearance area 2121 matches the shape of the integrated circuit area 23.

[0054] For example, if Figure 1 As shown, the main body of the overlapping area 212 is rectangular, the clearance area 2121 is located at the long side edge of the overlapping area 212, and the integrated circuit area 23 is rectangular. In the projection on the extended plane perpendicular to the display panel 2, the integrated circuit area 23 is located on one side of the body width direction of the overlapping area 212, and the body width side of the integrated circuit area 23 is arranged opposite to the clearance area 2121. The shape of the clearance area 2121 matches the body width side of the integrated circuit area 23, that is, the shape of the clearance area 2121 is a partial rectangle, as shown in FIG. Figure 1 As shown, the clearance area 2121 includes edge A, edge B and edge C to form a partial rectangle matching the integrated circuit area 23. The distance between the projection of edge B in the direction perpendicular to the plane where the display panel 2 is located and the projection of the integrated circuit area 23 in the direction perpendicular to the plane where the display panel 2 is located is 0.1 mm; the distance between the projection of the straight line where edge A is located in the direction perpendicular to the plane where the display panel 2 is located and the projection of the integrated circuit area 23 in the direction perpendicular to the plane where the display panel 2 is located is 0.2 mm; the distance between the projection of the straight line where edge C is located in the direction perpendicular to the plane where the display panel 2 is located and the projection of the integrated circuit area 23 in the direction perpendicular to the plane where the display panel 2 is located is 0.2 mm.

[0055] In some embodiments, Figure 5 As shown, the main body of the overlap area 212 is in the shape of a long strip, the clearance area 2121 is located in the middle of the overlap area 212, the main body of the clearance area 2121 is in a hole-like structure, and the projection of the integrated circuit area 23 in the direction perpendicular to the plane where the display panel 2 is located is located in the projection of the clearance area 2121 in the direction perpendicular to the plane where the display panel 2 is located. In other words, the projection of the main body of the optical function layer 21 in the direction perpendicular to the plane where the display panel 2 is located covers the entire integrated circuit area 23, and the clearance area 2121 is formed by opening a hole in the optical function layer 21.

[0056] In some embodiments, the shape of the clearance area 2121 of the hole structure matches the contour shape of the integrated circuit area 23, that is, in the projection on the extension plane perpendicular to the display panel 2, the shape of the clearance area 2121 and the shape of the integrated circuit area 23 are similar figures.

[0057] In some embodiments, Figure 5 As shown, the main body of the clearance area 2121 is a rectangular hole structure, which matches the integrated circuit area 23 with a rectangular structure.

[0058] In some embodiments, Figure 6 As shown, there are multiple integrated circuit areas 23, and the multiple integrated circuit areas 23 are arranged along one end edge of the display panel 2. Matching the multiple integrated circuit areas 23, there are multiple make way areas 2121, and the make way areas 2121 are arranged one by one with the integrated circuit areas 23 to expand the area of ​​the overlapping area 212.

[0059] In some embodiments, the two or more integrated circuit regions 23 are arranged in a straight line along the length direction of the overlapping region 212 , and the two or more clearance regions 2121 are also arranged in a straight line along the length direction of the overlapping region 212 .

[0060] In the embodiments of the present disclosure, Figure 1 As shown, the extension area 2122 protrudes out toward the side away from the display area 211 by a preset length d, so as to ensure that the contact area between the overlapping area 212 and the backlight assembly 1 can be increased through the extension area 2122 .

[0061] In some embodiments, the preset length d is 0.05 mm to 10 mm.

[0062] In some embodiments, similarly to the preset gap b set between the clearance area 2121 and the integrated circuit area 23, a preset gap b is set between the projection of the extension area 2122 in a direction perpendicular to the plane of the display panel 2 and the projection of the integrated circuit area 23 in a direction perpendicular to the plane of the display panel 2.

[0063] Among them, the preset length d of the extension area 2122 can be flexibly set by technical personnel in this field according to actual conditions, so that in the projection on the extension plane perpendicular to the display panel 2, a preset gap b is left between the extension area 2122 and the integrated circuit area 23, and the extension area 2122 does not exceed the display panel 2.

[0064] In some embodiments, Figure 1As shown, two extension areas 2122 can be provided so that a clearance area 2121 is formed between the two extension areas 2122 and the overlapping area 212, or as shown in FIG. 4, one extension area 2122 can be provided so that a clearance area 2121 is formed between the extension area 2122 and the overlapping area 212.

[0065] In some embodiments, the display module disclosed in the present invention is adapted to a terminal device with a foldable screen, that is, the display panel 2 and the backlight assembly 1 can be bent. When the display module is folded, the bending zone of the display module is bent, and the length direction of the bending zone is consistent with the length direction of the overlapping zone 212. Due to the stacking arrangement between the display panel 2 and the backlight assembly 1, the display panel 2 and the backlight assembly 1 are folded to different degrees during the folding process, that is, there is stress between the display panel 2 and the backlight assembly 1 during the folding process, and the stress direction is in the same direction as the width direction of the overlapping zone 212. Therefore, by setting the extension zone 2122 to resist the stress generated during the folding process, the problems of reverse arch failure of the bending zone during the folding process and the display panel 2 falling off due to stretching are effectively improved.

[0066] In some embodiments, there are multiple extension areas 2122, such as Figure 6 and Figure 7 As shown, a plurality of extension areas 2122 are provided to increase the contact area between the overlapping area 212 and the backlight assembly 1 .

[0067] In some embodiments, each extension area 2122 protrudes toward the side away from the display area 211 by the same preset length d to facilitate manufacturing.

[0068] In more than two integrated circuit regions 23, such as Figure 6 As shown, each integrated circuit region 23 is located between two adjacent extension regions 2122 , that is, more than two extension regions 2122 and more than two integrated circuit regions 23 are arranged in sequence and spaced apart.

[0069] In some embodiments, Figure 7 As shown, the plurality of extension areas 2122 are respectively located on two opposite sides of the clearance area 2121 .

[0070] In some embodiments, the display driver chip 231 is used to provide a stable voltage or current driving signal to each display unit in the display panel 2, thereby controlling the light intensity and color of the display unit, changing the color combination of different shades, and thus ensuring the uniformity and stability of the display image. The integrated circuit area 23 is arranged near the middle of one end of the display panel 2 to avoid providing a stable voltage or current driving signal to the display unit for a long distance, resulting in control delay.

[0071] Based on the same concept, the embodiment of the present disclosure also provides a terminal device, including any of the display modules described above; a display driver chip 231, the display driver chip 231 is directly press-welded to the integrated circuit area 23, or press-welded to the integrated circuit area 23 through a flexible circuit.

[0072] The terminal device involved in the present disclosure may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device that provides voice and / or data connectivity to users. For example, the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, etc. At present, some examples of terminals are: a smart phone (Mobile Phone), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

[0073] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0074] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0075] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0076] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0077] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0078] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0079] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display module, characterized in that: include: A backlight assembly, the backlight assembly is used to provide a light source; A display panel, the display panel being arranged on the light emitting side of the backlight assembly; The display panel includes an optical function layer, the optical function layer is arranged opposite to the light emitting side of the backlight assembly, the light source provided by the backlight assembly is incident on the display panel through the optical function layer, the optical function layer includes a display area and an overlap area, and one side of the overlap area is connected to the light emitting side; The display panel also includes an integrated circuit area. In its projection on an extension plane perpendicular to the display panel, the overlap area is located between the integrated circuit area and the display area. The overlap area has a yield area opposite to the integrated circuit area and an extension area adjacent to the yield area. The extension area protrudes toward a side away from the display area compared to the yield area.

2. The display module according to claim 1, characterized in that: In a projection on an extension plane perpendicular to the display panel, a preset gap is left between the clearance area and the integrated circuit area.

3. The display module according to claim 2, characterized in that: The preset gap is 0.05 mm to 10 mm.

4. The display module according to claim 1, characterized in that: In a projection on an extension plane perpendicular to the display panel, the shape of the clearance area matches the shape of the integrated circuit area.

5. The display module according to claim 1, characterized in that: The extension area extends outwardly by a preset length toward a side away from the display area; The preset length is 0.05 mm to 10 mm.

6. The display module according to claim 5, characterized in that: The number of the extension areas is multiple.

7. The display module according to claim 6, characterized in that: The plurality of extension areas extend outwardly from the display area by the same preset length.

8. The display module according to claim 6, characterized in that: The plurality of extension areas are respectively located on two opposite sides of the clearance area.

9. The display module according to claim 1, characterized in that: The optical function layer includes a lower polarizer.

10. The display module according to claim 1, characterized in that: The display panel further includes a bonding member, which is disposed on a side of the overlapping region facing the backlight assembly to bond the overlapping region to the backlight assembly.

11. The display module according to claim 10, characterized in that: A side where the bonding piece is bonded to the overlapping area is provided with a plurality of protrusions or depressions, and a side where the overlapping area is bonded to the bonding piece is provided with a plurality of depressions or protrusions.

12. The display module according to claim 10, characterized in that: The bonding member includes light-shielding glue.

13. The display module according to claim 1, characterized in that: The integrated circuit area is arranged near the middle of one end of the display panel.

14. The display module according to claim 1, characterized in that: There are multiple integrated circuit areas, and more than two of the integrated circuit areas are arranged along one edge of the display panel; There are a plurality of the making way areas, and the making way areas are arranged in one-to-one correspondence with the integrated circuit areas.

15. A terminal device, characterized in that: include: The display module according to any one of claims 1 to 14; A display driver chip is directly press-welded to the integrated circuit area, or is press-welded to the integrated circuit area through a flexible circuit.

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