TWM613965U - Backlight module - Google Patents

Abstract

The invention discloses a backlight module, which includes a light guide plate. The surface of the light guide plate is provided with optical dots for uniforming light. The surface of the light guide plate is attached with a reflective layer, and the reflective layer and the light guide plate are combined to form an integrated backlight module. In this creation, the reflective layer and the light guide plate are combined to form an integrated backlight module, which directly discards the traditional shading sheet and realizes the effect of uniform light emission. Moreover, the thickness of the integrated backlight module is reduced, which can effectively solve the current backlight module. The thickness of the group cannot meet the thickness requirements of thin and light notebook computers. Under the premise that the total height of the keyboard remains unchanged, the keyboard pressing stroke can be effectively increased, the user experience is improved, and the production process of the backlight module is simplified, and the material and assembly are greatly reduced. Cost, can be widely used on notebook and desktop computers.

Description

Backlight module

This creation belongs to the field of computer technology, and specifically relates to a backlight module.

Since the development of notebook computers, users have increasingly higher requirements for thinness and portability. As shown in Figure 1, the existing backlight module structure is composed of an independent shading sheet 11, a light guide plate 12, a reflection sheet 13, and an FPC light bar 14 from top to bottom. The assembly is complicated, the cost is high, and the thickness reaches 0.25 mm is the limit, and this thickness can no longer meet the needs of ultra-thin notebook computers. The existing backlight module has many parts, high material cost, and complicated process. In order to avoid light leakage from the surroundings, the lower reflector 13 needs to be embossed 15. The height of the embossing 15 is difficult to ensure consistency, resulting in light leakage from the surrounding adhesive; The thickness is relatively thick, and the structural space of the keyboard with the backlight module is limited. The width of the adhesive around the shading sheet 11 and the keyboard is limited, and it cannot be closely attached to the keyboard bottom plate. The backlight module and the keyboard are easy to be glued, causing gaps and affecting the module. Luminous effect.

In order to solve the problem that the thickness of the existing backlight module cannot meet the needs of ultra-thin notebook computers, the purpose of this creation is to provide a backlight module.

The technical solution adopted in this creation is: a backlight module, including a light guide plate, the surface of the light guide plate is provided with optical dots for uniform light, the surface of the light guide plate is attached with a reflective layer, and the reflective layer is combined with the light guide plate Form an integrated backlight module.

As an optional manner, the combined thickness of the light guide plate and the reflective layer is within 0.2 mm.

As an optional manner, the combined thickness of the light guide plate and the reflective layer is 0.16 mm.

As an optional manner, the reflective layer includes a reflective film and an ink layer, the reflective film is attached to the surface of the light guide plate, and the ink layer is provided on the surface of the reflective film.

As an alternative, the ink layer is printed on the surface of the reflective film.

As an optional manner, the side of the light guide plate close to the reflective film is a flat surface.

As an optional manner, a light-leakage ink layer is provided around the light guide plate.

As an alternative, the light-leakage-proof ink layer is ink-jetted or printed on the periphery of the light guide plate.

As an optional manner, the backlight module is not equipped with a light-shielding plate.

As an optional manner, the light guide plate is equipped with FPC components and Mylar sheets.

The beneficial effects of this creation are:

This creation combines the reflective layer with the light guide plate to form an integrated backlight module, which directly discards the traditional light-shielding sheet, and achieves a uniform light emission effect by arranging optical dots on the light guide plate, and the thickness of the integrated backlight module The reduction can effectively solve the problem that the thickness of the current backlight module cannot meet the thickness requirements of thin and light notebook computers. Under the premise that the total height of the keyboard remains unchanged, the keyboard pressing stroke can be effectively increased, the user’s hand experience is improved, and the entire backlight module is simplified. The production process greatly reduces the material and assembly costs, and can be widely used on notebook and desktop computers.

As shown in Figures 2 and 3, this embodiment provides a backlight module, which includes a light guide plate 21. The surface of the light guide plate 21 is provided with optical dots for adjusting light, and the surface of the light guide plate 21 is attached with a reflective layer. The reflective layer and the light guide plate 21 are combined to form an integrated backlight module. Specifically, the reflective layer includes a reflective film 22 and an ink layer 23, the reflective film 22 is attached to the surface of the light guide plate 21, and the ink layer 23 is provided on the surface of the reflective film 22. Preferably, the ink layer 23 is printed on the surface of the reflective film 22. The reflective film 22 is arranged on the surface of the light guide plate 21. The reflective film 22 and the ink layer 23 are combined to realize the function of the reflective sheet, which can directly replace the traditional separate reflective sheet, and realizes an integrated structure, which simplifies the assembly process. It is more convenient to use.

In this creation, the reflective layer is combined with the light guide plate 21 to form an integrated backlight module, which directly discards the traditional light-shielding sheet, and by arranging optical dots on the light guide plate 21, the effect of uniform light emission is achieved, and the integrated backlight module The reduced thickness of the backlight module can effectively solve the problem that the thickness of the current backlight module cannot meet the thickness requirements of thin and light notebook computers. Under the premise that the total height of the keyboard remains unchanged, the keyboard pressing stroke can be effectively increased, the user experience is improved, and the entire backlight module is simplified. The production process of the group greatly reduces material and assembly costs, and can be widely used on notebook and desktop computers.

Specifically, the combined thickness of the light guide plate 21 and the reflective layer is within 0.2 mm, and the thickness of the backlight module is reduced due to the omission of the light-shielding sheet. Preferably, the combined thickness of the light guide plate 21 and the reflective layer is 0.16 mm-0.2 mm, and the commonly used thickness of the light guide plate 21 is 0.125 mm or 0.175 mm, so that the thickness of the backlight module is between 0.16 mm and 0.2 mm. Further, the combined thickness of the light guide plate 21 and the reflective layer is 0.16 mm, and an ultra-thin light guide plate 21 with a thickness of 0.125 mm is selected so that the combined thickness of the light guide plate 21, the reflective film 22 and the ink layer 23 is 0.16 mm, the ultra-thin design breaks through the industry's thickness limitation of backlight modules and can meet the needs of ultra-thin notebook computers.

In some embodiments, a light-leakage ink layer is provided around the light guide plate 21. The light leakage prevention ink layer is ink-jetted or printed on the periphery of the light guide plate 21, which can effectively prevent light leakage of the light guide plate 21.

In some embodiments, the side of the light guide plate 21 close to the reflective film 22 is a flat surface, and the light guide plate 21 is equipped with a flexible printed circuit board (FPC) component 24 and a Mylar sheet 25. The creative backlight module discards the traditional shading sheet, and highly integrates the function of the reflective sheet on a single light guide plate 21, thereby reducing the thickness of the backlight module and meeting the needs of thin and light notebook computers. Makes the assembly process of the backlight module simpler. It has no shading sheet and replaces the traditional reflective sheet, which avoids the process of bumping the periphery of the backlight module. The width of the back glue is sufficient, and there is no need to open the glue around it. At the same time, the cost is greatly reduced. .

In the description of this creation, it is necessary to understand that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the creation and simplifying the description, and does not indicate or imply the pointed device or element It must have a specific orientation, structure and operation in a specific orientation, so it cannot be understood as a restriction on this creation.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this creation, "multiple" means two or more, unless otherwise specifically defined.

In this creation, unless otherwise clearly specified and limited, the terms "installation", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in this creation can be understood according to specific circumstances.

In this creation, unless expressly stipulated and defined otherwise, the "on" or "under" of the first feature on the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the first feature is higher in level than the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

In the description of this specification, descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean specific features described in conjunction with the embodiment or example , Structure, materials or features are included in at least one embodiment or example of this creation. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.

Although the embodiments of the present creation have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations on the present creation. Those of ordinary skill in the art can comment on the foregoing within the scope of the present creation. The embodiment undergoes changes, modifications, substitutions, and modifications.

(11): Shading sheet (12): Light guide plate (13): reflective sheet (14): FPC light bar (15): Convex (21): Light guide plate (22): reflective film (23): Ink layer (24): Flexible printed circuit board components (25): Mylar tablets

Figure 1 is a schematic diagram of the structure of a traditional backlight module; Figure 2 is a schematic structural diagram of a backlight module provided by this creation; FIG. 3 is a schematic diagram of the structure of a reflective layer in a backlight module provided by this creation.

(21): Light guide plate

(24): Flexible printed circuit board components

(25): Mylar tablets

Claims (10)

A backlight module includes a light guide plate, the surface of the light guide plate is provided with optical dots for uniforming light, the surface of the light guide plate is attached with a reflective layer, and the reflective layer is combined with the light guide plate (21) Then an integrated backlight module is formed. The backlight module according to claim 1, wherein the combined thickness of the light guide plate and the reflective layer is within 0.2 mm. The backlight module according to claim 2, wherein the combined thickness of the light guide plate and the reflective layer is 0.16 mm. The backlight module of claim 1, wherein the reflective layer includes a reflective film and an ink layer, the reflective film is attached to the surface of the light guide plate, and the ink layer is disposed on the reflective film s surface. The backlight module according to claim 4, wherein the ink layer is printed on the surface of the reflective film. The backlight module according to claim 4, wherein the side of the light guide plate close to the reflective film is a flat surface. The backlight module according to claim 1, wherein a light-leakage ink layer is provided around the light guide plate. The backlight module according to claim 7, wherein the light leakage prevention ink layer is ink-jetted or printed on the periphery of the light guide plate. The backlight module according to claim 1, wherein the backlight module is not equipped with a shading plate. The backlight module according to claim 1, wherein the light guide plate is equipped with a flexible printed circuit board (FPC) component and a Mylar sheet.

Images