Patent Description:
In order to improve screen-to-body ratios of electronic devices, regarding functional components in electronic devices, such as camera modules, a camera module is mounted by means of forming holes in a backlight module of an electronic device. However, in this method, a phenomenon that light leaks from the backlight module into the holes is prone to occur, thereby affecting photographing effect of the camera module.

In a first reference document D1 (<CIT>), the invention provides a screen component and an electronic device. The screen component comprises a liquid crystal display screen and a sealing member, the liquid crystal display screen has a display area and comprises a first through hole penetrating the display area, a camera is arranged in the first through hole, the sealing member is arranged between the camera and the inner wall of the first through hole to form sealing connection between the inner wall of the first through hole and the camera so as to prevent leakage of liquid crystal molecules in the liquid crystal display screen, and the sealing member forms a light shading layer between the camera and the inner wall of the first through hole to block light from leaking towards the camera.

In a second reference document D2 (<CIT>), the invention relates to a display device. The display device comprises a cover plate and a display panel which are arranged oppositely; the display panel comprises a through hole, a first non-display area, a display area and a second non-display area; the through hole runs through the display panel along the thickness direction; the first non-display area surrounds the through hole; the display area surrounds the first non-display area; the second non-display area surrounds the display area; the positive projection of the cover plate on the plane on which the display area is covers the through hole; the display panel also comprises an upper polaroid; the upper polaroid is positioned on one side, near the cover plate, of the display panel; and a shading material is arranged on the surface of one side, near the through hole, of the upper polaroid. The display device provided by the invention can effectively improve the light leakage problem of the display panel and improve the shooting effect of photosensitive devices such as a camera while increasing the screen-to-body ratio of the display panel.

In a third reference document D3 (<CIT>), an LCD display screen (<NUM>), an electronic device, and a manufacturing method for the LCD display screen (<NUM>) are provided. The LCD display screen (<NUM>) comprises several light-transmissive material layers and several non-light-transmissive material layers that are stacked; the LCD display screen (<NUM>) has a local light-transmissive area (<NUM>); the several non-light-transmissive material layers have no non-light-transmissive material in the local light-transmissive area (<NUM>) so as to form a light-transmissive channel in the local light-transmissive area (<NUM>) along a stack direction; some or all of optical devices are configured in the light-transmissive channel of the LCD display screen (<NUM>). By means of the local light-transmissive area (<NUM>) of the LCD display screen (<NUM>), the optical devices such as a camera (<NUM>), an ambient light sensor, and an optical fingerprint sensor, and other devices can be placed below the LCD display screen (<NUM>), and thus, the screen-to-body ratio is greatly enhanced, and a full screen effect is achieved.

In order to describe technical solutions in embodiments of the present application more clearly, drawings required being used in description of the embodiments will be simply introduced below. Obviously, the drawings in the following description are merely some embodiments of the present application. For one of ordinary skill in the art, it is also possible to obtain other drawings according to these drawings without paying any creative work.

The application will be further described in detail below in accompany with the drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only some embodiments, but not all embodiment, of the present application. All other embodiments obtained by one of ordinary skill in the art without paying creative work should fall within the protection scope of the present application.

Mentioning "embodiment" herein means that a specific feature, structure, or characteristic described in accompany with an embodiment may be included in at least one embodiment of the present application. Appearances of the phrase in various places in the specification do not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art can explicitly and implicitly understand that embodiments described herein can be combined with other embodiments.

In a first aspect of the present application, the invention as claimed provides an electronic device, comprising: a display module defining a first mounting hole, wherein a first light-shielding adhesive portion is formed in the first mounting hole; and a backlight module defining a second mounting hole; wherein the backlight module is attached to the display module, so that the first mounting hole is communicated with the second mounting hole to form a mounting space for mounting a camera; a second light-shielding adhesive portion connected to the first light-shielding adhesive portion and the backlight module is formed in the second mounting hole.

In some embodiments, the backlight module comprises a back frame and an optical component, the back frame comprises a bottom wall and a circumferential wall, the optical component overlaps on the bottom wall, the second mounting hole runs through the bottom wall and the optical component, the circumferential wall is disposed in the second mounting hole and connected with the bottom wall, the circumferential wall is bent relative to the bottom wall.

In the invention as claimed, the display module comprises a panel component and a lower polarizer attached to the panel component, and the first mounting hole runs through the lower polarizer.

In some embodiments, the first light-shielding adhesive portion is connected to the hole wall of the first mounting hole in the lower polarizer and the panel component; the second light-shielding adhesive portion is connected to the first light-shielding adhesive portion and the circumferential wall.

In some embodiments, the first light-shielding adhesive portion comprises a first surface being opposite to the hole wall of the first mounting hole in the lower polarizer, and the second light-shielding adhesive portion comprises a second surface being opposite to the circumferential wall; the smallest distance between the first surface and an axis of the first mounting hole is equal to the smallest distance between the second surface and the axis of the first mounting hole.

In some embodiments, a light-shielding tape is provided between the backlight module and the display module, the light-shielding tape is connected to a side of the optical component being away from the bottom wall, an end of the circumferential wall being away from the bottom wall, and the lower polarizer.

In some embodiments, the light-shielding tape comprises an outer surface being away from the mounting space and an inner surface being opposite to the outer surface, the inner surface is flush with the circumferential wall; the second light-shielding adhesive portion is connected to the first light-shielding adhesive, the inner surface of the light-shielding tape, and the circumferential wall.

In some embodiments, the display module further comprises an upper polarizer, the upper polarizer is attached to a side of the panel component being away from the lower polarizer, the upper polarizer defines an aperture, and the aperture corresponds to the first mounting hole.

In some embodiments, the first mounting hole runs through the panel component.

In some embodiments, the display module further comprises an upper polarizer, the upper polarizer is attached to a side of the panel component being away from the lower polarizer, and the first mounting hole further runs through the upper polarizer.

In some embodiments, a hole wall of the first mounting hole in the panel component protrudes from a hole wall of the first mounting hole in the upper polarizer in a direction towards the mounting space.

In some embodiments, the first light-shielding adhesive portion is connected to the hole wall of the first mounting hole in the upper polarizer and the hole wall of the first mounting hole in the panel component; the second light-shielding adhesive portion is connected to the first light-shielding adhesive portion, the hole wall of the first mounting hole in the lower polarizer, and the circumferential wall.

In some embodiments, the panel component comprises an array substrate and a color film substrate arranged layer by layer.

In a second aspect of the present application, the invention as claimed provides an assembly method of an electronic device, comprising: providing a display module comprising a panel component and a lower polarizer attached to the panel component, and defining a mounting hole running through the lower polarizer and a backlight module defining a second mounting hole; forming a first light-shielding adhesive portion in the first mounting hole before assembling the display module and the backlight module together; assembling the display module and the backlight module together such that the first mounting hole is communicated with the second mounting hole to form a mounting space for mounting a camera module; and forming a second light-shielding adhesive portion in the mounting space after assembling the display module and the backlight module together; and connecting the first light-shielding adhesive portion to the backlight module using the second light-shielding adhesive portion.

Referring to <FIG> is a flow chart of an embodiment of an assembly method for an electronic device provided by the present application. The electronic device in this embodiment can be any device with communication and storage functions, such as a tablet computer, a mobile phone, an electronic reader, a remote controller, a personal computer (PC), a notebook computer, a vehicular device, a network TV, a wearable device, or other smart devices with network functions. The assembly method for the electronic device in this embodiment may specifically include actions or operations at blocks <NUM> to <NUM>:.

At Operation <NUM>: A display module and a backlight module are provided.

Also referring to <FIG> and <FIG>, <FIG> is a structural schematic view of an embodiment of a display module <NUM> at the operation <NUM> of <FIG>, and <FIG> is a structural schematic view of another embodiment of the display module <NUM> at the operation <NUM> of <FIG>; wherein the display module <NUM> is provided with a first mounting hole <NUM>.

Specifically, in one embodiment as shown in <FIG>, the display module <NUM> comprises a panel component <NUM> and a lower polarizer <NUM> attached to the panel component <NUM>; the panel component <NUM> comprises an array substrate <NUM> and a color film substrate <NUM> arranged layer by layer, the lower polarizer <NUM> is attached to a side of the array substrate <NUM> being away from the color film substrate <NUM>, and the aforementioned first mounting hole <NUM> runs through the lower polarizer <NUM>; in another embodiment as shown in <FIG>, the aforementioned first mounting hole <NUM> runs through the panel component <NUM> and the lower polarizer <NUM>.

Optionally, the display module further comprises an upper polarizer <NUM>, the upper polarizer <NUM> is attached to a side of the panel component <NUM> being away from the lower polarizer <NUM>; in another embodiment as shown in <FIG>, the first mounting hole <NUM> further runs through the upper polarizer <NUM>.

Optionally, in another embodiment as shown in <FIG>, an end of the panel component <NUM> being close to the first mounting hole <NUM> protrudes from an end of the upper polarizer <NUM> being close to the first mounting hole <NUM> in a direction orienting the first mounting hole <NUM>.

Optionally, the display module <NUM> in this embodiment further comprises a cover plate <NUM>, the cover plate <NUM> is disposed at a side of the upper polarizer <NUM> being away from the panel component <NUM>; in this embodiment, the cover plate <NUM> is adhered to the upper polarizer <NUM> through optical glue.

Referring to <FIG> is a structural schematic view of a backlight module <NUM> at the operation <NUM> of <FIG>, wherein the backlight module <NUM> is provided with a second mounting hole <NUM>.

Specifically, the backlight module <NUM> comprises a back frame <NUM> and an optical component <NUM>, the back frame <NUM> comprises a bottom wall <NUM> and a circumferential wall <NUM>, the optical component <NUM> and the bottom wall <NUM> are arranged layer by layer, the second mounting hole <NUM> runs through the bottom wall <NUM> and the optical component <NUM>, the circumferential wall <NUM> is disposed in the second mounting hole <NUM> and connected with the bottom wall <NUM>, and the circumferential wall <NUM> is bent relative to the bottom wall <NUM>.

Optionally, the back frame <NUM> is a metal back frame.

Wherein, the optical component <NUM> comprises a light guide plate <NUM> and a diffusion film <NUM>, a lower anti-reflection film <NUM>, and an upper anti-reflection film <NUM> which are arranged layer by layer on a side of the light guide plate <NUM> being away from the bottom wall <NUM>; the diffusion film <NUM>, the lower anti-reflection film <NUM>, and the upper anti-reflection film <NUM> are sequentially arranged layer by layer in a direction being away from the light guide plate <NUM>.

Furthermore, a reflection sheet <NUM> is provided between the light guide plate <NUM> and the bottom wall <NUM>.

Further, a light-shielding tape <NUM> is provided on a side of the upper anti-reflection film <NUM> being away from the light guide plate <NUM>, and the light-shielding tape <NUM> is adhered to the upper anti-reflection film <NUM> and the circumferential wall <NUM>.

The terms "first" and "second" in the present application are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include at least one such feature.

At Operation <NUM>: A first time of glue spraying is performed in the first mounting hole to form a first light-shielding adhesive portion.

Also referring to <FIG> and <FIG> is a structural schematic view of an embodiment of a display module at the operation <NUM> of <FIG>. In this embodiment, when the first mounting hole <NUM> only runs through the lower polarizer <NUM>, a first time of glue spraying is performed at a junction formed by a side of the panel component <NUM> being close to the lower polarizer <NUM> and an end of the lower polarizer <NUM> being close to the first mounting hole <NUM> so as to form the first light-shielding adhesive portion <NUM>, thereby preventing a leakage phenomenon from the junction into the first mounting hole <NUM> from occurring. In a process of a specific embodiment, it is possible to form an adhesive ring at the aforesaid position by a method of rotatably glue spraying, so as to serve as the first light-shielding adhesive portion <NUM>.

Also referring to <FIG> and <FIG> is a structural schematic view of another embodiment of a display module at the operation <NUM> of <FIG>. In another embodiment, when the first mounting hole <NUM> runs through the panel component <NUM> and the lower polarizer <NUM>, a first time of glue spraying is performed at an end of the panel component <NUM> orienting the first mounting hole <NUM> to form the first light-shielding adhesive portion <NUM>.

Optionally, in another embodiment, it is further possible to perform a first time of glue spraying at both ends of the panel component <NUM> and the upper polarizer <NUM> being close to the first mounting hole <NUM> to form the first light-shielding adhesive portion <NUM>, and it is also possible to perform a first time of glue spraying at ends of the panel component <NUM>, the lower polarizer <NUM>, and the upper polarizer <NUM> being close to the first mounting hole <NUM> to form the first light-shielding adhesive portion <NUM>.

Optionally, in another embodiment, when an end of the panel component <NUM> being close to the first mounting hole <NUM> protrudes from an end of the upper polarizer <NUM> being close to the first mounting hole <NUM> in a direction orienting the first mounting hole <NUM>, it is possible to perform a first time of glue spraying at the end of the panel component <NUM> being close to the first mounting hole <NUM> and a portion of the panel component <NUM> protruding from the upper polarizer <NUM> to form the first light-shielding adhesive portion <NUM>; at the same time of shielding light, an adhesion area between the first light-shielding adhesion portion <NUM> and the panel component <NUM> can be increased, thereby preventing the first light-shielding adhesion portion <NUM> from falling down from the panel component <NUM>.

Optionally, the first light-shielding adhesive portion <NUM> can be hot melt adhesive or ultraviolet curing adhesive. Hot melt adhesive is a kind of plastic adhesive of which a physical state changes with a change of a temperature within a certain temperature range, while its chemical properties remain unchanged. Compared with general glue, hot melt adhesive has greater bonding strength and better curing effect; and it is easier to control a thickness of glue, which can better meet design requirements of narrow frames of electronic device; in addition, hot melt adhesive is thermoplastic polyurethane, products bonded with hot melt adhesive are easier to disassemble or repair. For example, the hot melt adhesive may be PUR hot melt adhesive, that is, moisture curing reactive polyurethane hot melt adhesive, is main component is isocyanate-terminated polyurethane prepolymer. Adhesiveness and toughness (elasticity) of PUR hot melt adhesive can be adjusted, and it has excellent bonding strength, temperature resistance, chemical resistance and aging resistance. UV curing adhesive is a kind of adhesive cured by ultraviolet light radiation, it can be used as a bonding material. For example, the first light-shielding adhesive <NUM> uses black UV curing adhesive, the black UV curing adhesive can meet the requirements of light-shielding and shading, and has characteristics of strong adhesive force, fast curing, thin glue, etc. By using the black UV curing adhesive, at the same time of shielding light, liquid and water vapor can be prevented from entering the inside of the display module <NUM>.

At Operation <NUM>: The backlight module and the display module are attached together, such that the first mounting hole is communicated with the second mounting hole to form a mounting space.

Also referring to <FIG> and <FIG>, <FIG> is a structural schematic view of an embodiment of an electronic device <NUM> provided by the present application, and <FIG> is a structural schematic view of another embodiment of an electronic device <NUM> provided by the present application; wherein, a side of the optical component <NUM> in the backlight module <NUM> being away from the bottom wall <NUM> is attached to the lower polarizer <NUM> in the display module <NUM>, such that the first mounting hoe <NUM> and the second mounting hole <NUM> form a mounting space <NUM>.

At Operation <NUM>: A second time of glue spraying is performed in the second mounting hole, so as to form a second light-shielding adhesive portion connecting the first light-shielding adhesive portion with the backlight module.

Specifically, a second time of glue spraying is performed on the first light-shielding adhesive portion <NUM> and the circumferential wall <NUM>, so as to form a second light-shielding adhesive portion <NUM> connecting the first light-shielding adhesive portion <NUM> with the circumferential wall <NUM>. Thus, both the first light-shielding adhesive portion <NUM> and the second light-shielding adhesive portion <NUM> shield light in the mounting space <NUM>, thereby preventing a leakage phenomenon from the backlight module <NUM> into the mounting hole <NUM> from occurring. Furthermore, compared with a method of spraying glue only once, spraying glue twice can avoid the case that spraying glue only once results in an insufficient glue spraying width, which causes ineffective light shielding; moreover, if glue spraying is performed only once, in order to achieve better light shielding effect, glue spraying area is inevitably increased, thereby causing that the case of sputtering to other areas are prone to occur during a glue spraying process.

Optionally, the assembly method in this embodiment can further comprise:.

At Operation <NUM>: A functional component is mounted in the mounting space.

Optionally, the functional component <NUM> can be a camera module.

Further referring to <FIG> and <FIG>, the present application further provides an electronic device <NUM>, the electronic device <NUM> is assembled by the method in the aforementioned embodiments, and can specifically refer to relating description in the aforementioned embodiments, they are not repeated here.

In the assembly method for the electronic device provided by embodiments of the present application, the first time of glue spraying is performed in the first mounting hole in the display module to form the first light-shielding adhesive portion; the backlight module is attached to the display module to form the mounting space, and then the second time of glue spraying is performed in the second mounting hole, so as to form the second light-shielding adhesive portion connecting the first light-shielding adhesive portion with the backlight module. Thus, both the first light-shielding adhesive portion and the second light-shielding adhesive portion shield light in the mounting space, thereby preventing a leakage phenomenon from the backlight module into the mounting space from occurring. Moreover, compared with a method of spraying glue only once, spraying glue twice can avoid the case that spraying glue only once results in an insufficient glue spraying width, which causes ineffective light shielding.

Claim 1:
An electronic device, comprising:
a display module (<NUM>) comprising a panel component (<NUM>) and a lower polarizer (<NUM>) attached to the panel component (<NUM>), and defining a first mounting hole (<NUM>) running through the lower polarizer (<NUM>), wherein a first light-shielding adhesive portion (<NUM>) is formed in the first mounting hole (<NUM>); and
a backlight module (<NUM>) defining a second mounting hole (<NUM>); wherein the backlight module (<NUM>) is attached to the display module (<NUM>), so that the first mounting hole (<NUM>) is communicated with the second mounting hole (<NUM>) to form a mounting space (<NUM>) for mounting a camera module; a second light-shielding adhesive portion (<NUM>) connecting the first light-shielding adhesive portion (<NUM>) to the backlight module (<NUM>) is formed in the second mounting hole (<NUM>).