TWI491963B - Double - sided liquid crystal display device - Google Patents

Description

Double-sided liquid crystal display device

The present invention relates to a double-sided liquid crystal display device, and more particularly to a double-sided liquid crystal display device having a backlight module capable of simultaneously providing two liquid crystal display panel light sources.

At present, the conventional double-sided liquid crystal display mostly assembles two liquid crystal display devices in a back-to-back manner. Each liquid crystal display device includes a casing, a liquid crystal display panel disposed in the casing, and a backlight module disposed in the casing. The opposite sides of the outer casing of the two liquid crystal display devices are locked together by a connecting frame.

However, the double-sided liquid crystal display assembled by the two liquid crystal display devices has a relatively thick thickness, so that the overall volume is large, so that the space is occupied.

Therefore, the main object of the present invention is to provide a double-sided liquid crystal display device capable of simultaneously providing two liquid crystal display panel light sources through a single backlight module, which can reduce the thickness of the double-sided liquid crystal display device to reduce the use time. The space occupied.

Thus, the double-sided liquid crystal display device of the present invention comprises a casing , two liquid crystal display panels, and a backlight module.

The outer casing comprises a partition wall and two surrounding walls respectively extending from the outer peripheral edge of the partition wall in opposite directions. The partition wall is made of an opaque material, and each of the surrounding walls and the partition wall define an accommodating space, each surrounding The wall is formed with an opening that communicates with the accommodating space; each liquid crystal display panel is disposed in the corresponding accommodating space and adjacent to the corresponding opening; the backlight module includes two optical film units, and one illuminating unit, each optical film The sheet unit is disposed in the corresponding accommodating space and is located between the partition wall and the corresponding liquid crystal display panel, and the light emitting unit is disposed on the partition wall for providing light to the two optical film units.

The partition wall is formed with at least one mounting hole communicating with each of the accommodating spaces. The illuminating unit includes at least one light source disposed in the mounting hole. The shape of the light source is matched with the shape of the mounting hole, and the light source is embedded in the mounting hole and closes the mounting hole.

The partition wall is formed with a plurality of mounting holes spaced apart from each other, and the light emitting unit comprises a plurality of light sources, each light source is disposed in the corresponding mounting hole, and the shape of each light source is matched with the shape of the corresponding mounting hole, and each light source is embedded in the corresponding mounting hole. And close the corresponding mounting hole.

The partition wall includes a partition wall body, a plurality of first protruding wall bodies, and a plurality of second protruding wall bodies, the partition wall body includes a first surface, and a second surface opposite to the first surface, the first The surface and the second surface respectively face the two optical film units, and the first protruding wall body is formed by the first surface protruding away from the second surface and spaced apart from each other, and each of the first protruding wall bodies Defining a first accommodating groove communicating with the corresponding accommodating space, the second protrusions The wall body is formed by the second surface protruding away from the first surface and spaced apart from each other, and each of the second protruding wall bodies defines a second receiving groove communicating with the corresponding receiving space, the light emitting unit A plurality of light sources respectively fixed in the first and second accommodating grooves are included.

Each of the first and second protruding wall bodies respectively has a first wall portion parallel to and spaced apart from the partition wall body, and two second wall portions respectively connected between the opposite ends of the first wall portion and the partition wall body The two second wall portions are inclined to extend away from the first wall portion toward the partition wall body.

The utility model has the advantages that the partition wall is made of an opaque material, can block the passage of light, and avoid overlapping of images presented by the two liquid crystal display panels, thereby preventing the user from watching. When one of the liquid crystal display panels is imaged, the image displayed by the other liquid crystal display panel is simultaneously seen. In addition, the light-emitting unit of a single backlight module can simultaneously provide light to the design mode of the two liquid crystal display panels, which can effectively reduce the thickness of the double-sided liquid crystal display device, thereby saving space occupied by the use.

100‧‧‧Double-sided liquid crystal display device

1‧‧‧Shell

11, 11' ‧ ‧ partition wall

111‧‧‧Mounting holes

112‧‧‧Separate wall

113‧‧‧First convex wall

114‧‧‧Second convex wall

115‧‧‧ first side

116‧‧‧ second side

117‧‧‧First accommodating slot

118‧‧‧Second accommodating slot

119‧‧‧First wall

120‧‧‧ second wall

12‧‧‧ Around the wall

121‧‧‧ openings

13‧‧‧ accommodating space

2‧‧‧LCD panel

3‧‧‧Backlight module

31‧‧‧Optical diaphragm unit

32‧‧‧Lighting unit

321‧‧‧Light source

Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a schematic view showing a first preferred embodiment of the double-sided liquid crystal display device of the present invention, illustrating a housing and a liquid crystal display panel. And an assembly relationship between the backlight modules; FIG. 2 is a schematic view showing a second preferred embodiment of the double-sided liquid crystal display device of the present invention, illustrating a group between the outer casing, the liquid crystal display panel, and the backlight module 3 is a schematic view showing a third preferred embodiment of the double-sided liquid crystal display device of the present invention, illustrating an assembly relationship between the outer casing, the liquid crystal display panel, and the backlight module; and FIG. 4 is a double-sided liquid crystal display device of the present invention. A partially enlarged view of the third preferred embodiment illustrates the relationship between the partition wall of the partition wall and the first projecting wall and the second projecting wall.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

1 is a first preferred embodiment of a double-sided liquid crystal display device of the present invention. The double-sided liquid crystal display device 100 includes a housing 1, two liquid crystal display panels 2, and a backlight module 3.

The outer casing 1 includes a partition wall 11 and two surrounding walls 12 extending in opposite directions from the outer peripheral edge of the partition wall 11, respectively. The partition wall 11 is made of an opaque material. Each of the surrounding walls 12 and the partition wall 11 define an accommodating space 13 , and each of the surrounding walls 12 defines an opening 121 communicating with the accommodating space 13 . Each of the liquid crystal display panels 2 is disposed in the corresponding accommodating space 13 and adjacent to the corresponding opening 121. The backlight module 3 includes two optical film units 31 and a light-emitting unit 32. The optical film units 31 are disposed in the corresponding accommodating spaces 13 and are located between the partition wall 11 and the corresponding liquid crystal display panel 2, respectively. The optical film unit 31 has, for example, an optical film such as a diffusion sheet and a cymbal sheet. The light emitting unit 32 is disposed on the partition wall 11 for providing light to the two optical film units 31, so that the single backlight module 3 can be simultaneously provided. Light is applied to the two liquid crystal display panels 2.

The partition wall 11 is made of an opaque material, which can block the passage of light, and avoid overlapping of the images presented by the two liquid crystal display panels 2, thereby preventing the user from viewing one of the liquid crystal displays. When the image of the panel 2 is displayed, the image displayed by the other liquid crystal display panel 2 is simultaneously seen. In addition, by using a single backlight module 3, light can be simultaneously provided to the design mode of the two liquid crystal display panels 2. Compared with the prior art, the use of the connection frame can be omitted, thereby effectively reducing the double-sided liquid crystal. The thickness of the device 100 is displayed to reduce the space occupied during use.

In the present embodiment, the partition wall 11 is formed with a mounting hole 111 that communicates with each of the accommodating spaces 13. The light-emitting unit 32 includes a light source 321 disposed in the mounting hole 111. The shape of the light source 321 is matched with the shape of the mounting hole 111. The light source 321 is embedded in the mounting hole 111 and closes the mounting hole 111, thereby preventing one of the receiving spaces. The light in the 13 penetrates into the other accommodating space 13 via the mounting hole 111, so that the partition wall 11 can effectively achieve the effect of blocking light. The light source 321 of the embodiment is exemplified by the surface light source. The light source 321 can include a transparent carrier frame embedded in the mounting hole 111, and a plurality of pins are disposed in the transparent carrier frame and arranged with each other. The cold cathode lamp; the light source 321 may also include a circuit substrate for inserting into the mounting hole 111, and a plurality of light emitting diodes respectively disposed on opposite sides of the circuit substrate, by the foregoing two design manners. The light source 321 can simultaneously supply light to the two optical film units 31 and the two liquid crystal display panels 2.

Referring to FIG. 2, it is a second comparison of the double-sided liquid crystal display device of the present invention. In a preferred embodiment, the overall structure of the double-sided liquid crystal display device 100 is substantially the same as that of the first preferred embodiment, except that the number of the mounting holes 111 of the partition wall 11 and the number of the light sources 321 are slightly different.

In this embodiment, the partition wall 11 is formed with a plurality of mounting holes 111 spaced apart from each other, and the light emitting unit 32 includes a plurality of light sources 321 , and the light sources 321 are disposed in the corresponding mounting holes 111 , and the shapes and corresponding installations of the light sources 321 are respectively installed. The holes 111 are matched in shape, and each of the light sources 321 is embedded in the corresponding mounting hole 111 and closes the corresponding mounting hole 111. Each of the light sources 321 of the embodiment may be a cold cathode lamp tube for inserting into the mounting hole 111. Each of the light sources 321 may also include a circuit substrate for inserting into the mounting hole 111, and a plurality of light sources respectively disposed on the circuit. Light-emitting diodes on opposite sides of the substrate.

3 and FIG. 4, which is a third preferred embodiment of the double-sided liquid crystal display device of the present invention, the overall structure of the double-sided liquid crystal display device 100 is substantially the same as that of the second preferred embodiment, but the partition wall 11 of the outer casing 1 'The structure is slightly different.

In this embodiment, the partition wall 11 ′ includes a partition wall 112 , a plurality of first protruding wall bodies 113 , and a plurality of second protruding wall bodies 114 . The partition wall body 112 includes a first surface 115 , and A first surface 115 and a second surface 116 respectively face the two optical film units 31 opposite to the second surface 116 of the first surface 115. The first convex walls 113 are moved away from the second surface by the first surface 115. The first projection wall 113 defines a first receiving groove 117 communicating with the corresponding receiving space 13 , and the second protruding wall 114 is defined. Is moved from the second side 116 away from the first The surface of the surface 115 is convexly arranged and spaced apart from each other. Each of the second protruding walls 114 defines a second receiving groove 118 communicating with the corresponding receiving space 13. The light emitting unit 32 includes a plurality of fixings respectively. The light sources 321 in the first and second accommodating grooves 117 and 118.

Specifically, each of the first and second protruding wall bodies 113 and 114 has a first wall portion 119 parallel to and spaced apart from the partition wall body 112, and two opposite ends respectively connected to the first wall portion 119 and The second wall portion 120 between the partition walls 112 is inclined by the first wall portion 119 gradually away from the partition wall 112. The light source 321 is fixed to the first receiving groove 117 of the corresponding first protruding wall 113 by a fastening component (not shown) such as a hook, or the corresponding second protruding wall 114. The second receiving groove 118 is inside. Further, the partition wall 11' of the present embodiment is integrally stamped with the first projecting wall body 113 and the second projecting wall body 114 on the partition wall body 112 by, for example, press forming, so that it can be mass-produced quickly and Reduce manufacturing costs and make manufacturing quality more stable.

In summary, the double-sided liquid crystal display device 100 of each embodiment is made of an opaque material by the partition walls 11 and 11 ′, which can block the passage of light and avoid the appearance of the two liquid crystal display panels 2 . The image is overlapped, thereby preventing the user from simultaneously seeing the image presented by the other liquid crystal display panel 2 while viewing the image of one of the liquid crystal display panels 2. In addition, the light-emitting unit 32 of the single backlight module 3 can simultaneously provide light to the design mode of the two liquid crystal display panels 2, which can effectively reduce the thickness of the double-sided liquid crystal display device 100, thereby saving space occupied by use. It is indeed possible to achieve the object of the invention.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

100‧‧‧Double-sided liquid crystal display device

1‧‧‧Shell

11‧‧‧ partition wall

111‧‧‧Mounting holes

12‧‧‧ Around the wall

121‧‧‧ openings

13‧‧‧ accommodating space

2‧‧‧LCD panel

3‧‧‧Backlight module

31‧‧‧Optical diaphragm unit

32‧‧‧Lighting unit

321‧‧‧Light source

Claims (5)

A double-sided liquid crystal display device comprising: a casing comprising a partition wall, and two surrounding walls respectively extending from opposite outer edges of the partition wall in opposite directions, the partition wall being made of an opaque material, each of the partition walls The surrounding wall and the partition wall are in a unitary structure and jointly define an accommodating space, each of the surrounding walls is formed with an opening communicating with the accommodating space; and two liquid crystal display panels, each of the liquid crystal display panels being disposed at the corresponding one And a backlight module, comprising two optical film units, and a light-emitting unit, each of the optical film units being disposed in the corresponding receiving space and located at the partition wall Between the corresponding liquid crystal display panel, the light emitting unit is disposed on the partition wall for providing light to the two optical film units. The double-sided liquid crystal display device of claim 1, wherein the partition wall is formed with at least one mounting hole communicating with each of the accommodating spaces, and the illuminating unit comprises at least one light source disposed in the mounting hole, The shape of the light source cooperates with the shape of the mounting hole, the light source being embedded in the mounting hole and closing the mounting hole. The double-sided liquid crystal display device of claim 2, wherein the partition wall is formed with a plurality of mounting holes spaced apart from each other, the light emitting unit includes a plurality of light sources, each of the light sources being disposed in the corresponding mounting hole, each The shape of the light source cooperates with a corresponding shape of the mounting hole, and each of the light sources is embedded in the corresponding mounting hole and closes the corresponding mounting hole. The double-sided liquid crystal display device of claim 1, wherein the partition wall The utility model comprises a partition wall body, a plurality of first protruding wall bodies, and a plurality of second protruding wall bodies, wherein the partition wall body comprises a first surface and a second surface opposite to the first surface, the first One surface and the second surface respectively face the two optical film units, and the first protruding wall bodies are formed by the first surface protruding away from the second surface and spaced apart from each other, The first protruding wall body defines a first receiving groove communicating with the corresponding receiving space, and the second protruding wall body is formed by the second surface protruding away from the first surface The second protruding wall defines a second receiving groove that communicates with the corresponding receiving space, and the light emitting unit includes a plurality of first and second receiving portions respectively fixed to the first receiving portion. The light source in the slot. The double-sided liquid crystal display device of claim 4, wherein each of the first and second protruding wall bodies has a first wall portion parallel to and spaced apart from the partition wall body, and two of the first wall portions are respectively connected to a second wall portion between the opposite end of the first wall portion and the partition wall body, the two second wall portions extending obliquely away from the first wall portion toward the partition wall body.