CN104021739A - Double-sided liquid crystal display device - Google Patents

Abstract

A double-sided liquid crystal display device comprises a housing, two liquid crystal display panels and a backlight module, wherein the housing comprises a partition wall and two surrounding walls extending in opposite directions from the outer periphery of the partition wall, wherein the partition wall is made of an opaque material, wherein each surrounding wall and the partition wall jointly define a containing space, wherein each surrounding wall forms an opening communicating with the containing space; wherein each liquid crystal display panel is arranged in a corresponding containing space and adjacent to the corresponding opening; and wherein the backlight module comprises two optical film units and a light emitting unit, wherein each optical film unit is arranged in a corresponding containing space and located between the partition wall and the corresponding liquid crystal display panel, wherein the light emitting unit is arranged on the partition wall to provide light to the two optical film units.

Description

Double-sided liquid crystal display device

technical field

The invention relates to a double-sided liquid crystal display device, in particular to a double-sided liquid crystal display device with a backlight module capable of simultaneously providing light sources for two liquid crystal display panels.

Background technique

At present, most of the existing double-sided liquid crystal displays are assembled with two liquid crystal display devices in a back-to-back manner. Each liquid crystal display device includes a casing, a liquid crystal display panel arranged in the casing, and a backlight module arranged in the casing. The opposite sides of the casings of the two liquid crystal display devices are locked together through a connecting frame.

However, the double-sided liquid crystal display assembled by two liquid crystal display devices has a thicker thickness, which makes the overall volume larger, so it takes up more space in use.

Contents of the invention

The main purpose of the present invention is to provide a double-sided liquid crystal display device, which can simultaneously provide 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 and reduce the occupied space during use. space.

The purpose of the present invention and the solution to the background technical problems are achieved by adopting the following technical solutions. The double-sided liquid crystal display device proposed by the present invention includes a housing, two liquid crystal display panels and a backlight module.

The housing includes a partition wall and two surrounding walls respectively extending from the outer periphery of the partition wall in opposite directions. Each of the surrounding walls forms an opening communicating with the accommodating space, each of the liquid crystal display panels is disposed in the corresponding accommodating space and adjacent to the corresponding opening, and the backlight module includes two optical film units and a light-emitting unit, each of the optical film units is arranged in the corresponding accommodating space and between the partition wall and the corresponding liquid crystal display panel, and the light-emitting unit is arranged on the partition wall to provide light to the two optical Diaphragm unit.

The purpose of the present invention and the solution to the background technical problems can also be further realized by adopting the following technical means.

The partition wall is formed with at least one installation hole communicating with each of the accommodating spaces, the light emitting unit includes at least one light source arranged in the installation hole, the shape of the light source matches the shape of the installation hole, and the light source is inserted into the installation hole and close the mounting hole.

The partition wall is formed with a plurality of installation holes spaced apart from each other, the light emitting unit includes a plurality of light sources, each of the light sources is arranged in the corresponding installation hole, the shape of each light source matches the shape of the corresponding installation hole, and each of the light sources is arranged in the corresponding installation hole. The light source is inserted into the corresponding installation hole and the corresponding installation hole is closed.

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 surface and the second surface respectively face the two optical film units, and the first protruding walls protrude from the first surface in a direction away from the second surface and are arranged at intervals from each other. The first protruding wall defines a first accommodating groove communicating with the corresponding accommodating space, and the second protruding wall protrudes from the second surface in a direction away from the first surface and arranged at intervals with each other, each of the second protruding walls defines a second accommodating groove communicating with the corresponding accommodating space, and the light-emitting unit includes a plurality of first accommodating grooves, a second 2. The light source in the accommodation tank.

Each of the first protruding wall body and the second protruding wall body has a first wall part parallel to and spaced apart from the partition wall body, and two parts connected to the opposite end of the first wall part and the partition wall body respectively. The second wall part between the body, the two second wall parts obliquely extend gradually away from the first wall part toward the direction of the partition wall body.

The beneficial effect of the present invention is that: the partition wall 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. When watching the image of one of the LCD panels, the image presented by the other LCD panel will be seen at the same time. In addition, the light-emitting unit of a single backlight module can provide light to two liquid crystal display panels at the same time, which can effectively reduce the thickness of the double-sided liquid crystal display device, so as to save the occupied space in use.

Description of drawings

1 is a schematic diagram of a first preferred embodiment of a double-sided liquid crystal display device of the present invention, illustrating the assembly relationship between a housing, a liquid crystal display panel and a backlight module;

2 is a schematic diagram of a second preferred embodiment of the double-sided liquid crystal display device of the present invention, illustrating the assembly relationship between the housing, the liquid crystal display panel and the backlight module;

3 is a schematic diagram of a third preferred embodiment of the double-sided liquid crystal display device of the present invention, illustrating the assembly relationship between the housing, the liquid crystal display panel and the backlight module; and

4 is a partially enlarged view of the third preferred embodiment of the double-sided liquid crystal display device of the present invention, illustrating the relationship between the partition wall body and the first protruding wall body and the second protruding wall body of the partition wall.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIG. 1 , it is a first preferred embodiment of the 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 housing 1 includes a partition wall 11 and two surrounding walls 12 respectively extending from the outer periphery of the partition wall 11 in opposite directions. The partition wall 11 is made of opaque material. Each surrounding wall 12 and the partition wall 11 jointly define an accommodating space 13 , and each surrounding wall 12 forms an opening 121 communicating with the accommodating space 13 . Each liquid crystal display panel 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. Each optical film unit 31 is arranged in the corresponding accommodating space 13 and is located between the partition wall 11 and the corresponding liquid crystal display panel 2. Each optical film unit 31 The film unit 31 has optical films such as a diffusion sheet and a prism sheet, for example. The light emitting unit 32 is disposed on the partition wall 11 to provide light to the two optical film units 31 , so that a single backlight module 3 can provide light to the two liquid crystal display panels 2 at the same time.

The partition wall 11 is made of an opaque material, which can block the passage of light and avoid overlapping images displayed by the two liquid crystal display panels 2, thereby preventing the user from viewing one of the liquid crystal display panels. When displaying the image on the LCD panel 2, the image presented by another liquid crystal display panel 2 will be seen. In addition, the single backlight module 3 can provide light to the two liquid crystal display panels 2 at the same time. Compared with the background technology, the use of such as connecting frames can be omitted, thereby effectively reducing the cost of double-sided liquid crystal display. The thickness of the device 100 is reduced to reduce the space occupied during use.

In this embodiment, the partition wall 11 is formed with an installation hole 111 communicating with each accommodating space 13 . The light emitting unit 32 includes a light source 321 arranged in the mounting hole 111. The shape of the light source 321 matches 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 accommodating spaces from The light in 13 penetrates into another accommodating space 13 through the installation hole 111 , so that the partition wall 11 can effectively block the light. The light source 321 of this embodiment is illustrated by taking the form of a surface light source as an example. The light source 321 may include a transparent carrying frame for being embedded in the mounting hole 111, and a plurality of light sources arranged in the transparent carrying frame and arranged together. The cold cathode lamp; the light source 321 may also include a circuit substrate for embedding in the mounting hole 111, and a plurality of light-emitting diodes respectively arranged on two opposite sides of the circuit substrate. By the aforementioned two design methods, the light source 321 Light can be provided to the two optical film units 31 and the two liquid crystal display panels 2 at the same time.

Referring to Fig. 2, it is the second 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 roughly the same as that of the first preferred embodiment, but the number of mounting holes 111 of the partition wall 11 and The number of light sources 321 is slightly different.

In this embodiment, the partition wall 11 is formed with a plurality of installation holes 111 spaced apart from each other, the light emitting unit 32 includes a plurality of light sources 321, and each light source 321 is arranged in the corresponding installation hole 111, and the shape of each light source 321 is consistent with the corresponding installation The holes 111 are matched in shape, and each light source 321 is inserted into the corresponding installation hole 111 and closes the corresponding installation hole 111 . Each light source 321 of this embodiment can be a cold cathode lamp tube used to embed in the installation hole 111, and each light source 321 can also include a circuit substrate used to embed in the installation hole 111, and a plurality of circuit boards respectively arranged on the circuit board. LEDs on opposite sides of the substrate.

Referring to Fig. 3 and Fig. 4, it is the 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 roughly the same as that of the second preferred embodiment, but the partition wall 11 of the casing 1 ' structure is slightly different.

In this embodiment, the partition wall 11' includes a partition wall body 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 second surface 116 opposite to the first surface 115, the first surface 115 and the second surface 116 respectively face the two optical film units 31, and the first protruding wall body 113 is away from the second surface from the first surface 115 116 protruding in the direction and arranged at intervals with each other, each first protruding wall body 113 defines a first accommodating groove 117 communicating with the corresponding accommodating space 13, and the second protruding wall body 114 is formed by The second surface 116 protrudes toward the direction away from the first surface 115 and is arranged at intervals with each other. Each second protruding wall body 114 defines a second accommodating groove 118 communicating with the corresponding accommodating space 13 to emit light. The unit 32 includes a plurality of light sources 321 respectively fixed in the first accommodating groove 117 and the second accommodating groove 118 .

Specifically, each of the first protruding wall body 113 and the second protruding wall body 114 has a first wall portion 119 parallel to and spaced apart from the partition wall body 112, and two wall portions respectively connected to the first wall portion The second wall portion 120 between the opposite end of 119 and the partition wall 112 , the two second wall portions 120 extend obliquely from the first wall portion 119 toward the partition wall 112 gradually. Each light source 321 can be fixed in the first accommodating groove 117 of the corresponding first protruding wall body 113 or the first accommodating groove 117 of the corresponding second protruding wall body 114 through a fastening component (not shown) such as a hook. Two accommodation slots 118. In addition, the partition wall 11' of this embodiment is integrally stamped out the first protruding wall body 113 and the second protruding wall body 114 on the partition wall body 112 by, for example, stamping forming, so that it can be mass-manufactured quickly and reduces the cost. The manufacturing cost is low, and the manufacturing quality is relatively stable.

To sum up the above, the double-sided liquid crystal display device 100 of each embodiment is made of an opaque material by means of the partition wall 11 and the partition wall 11 ′, which can block the passage of light and prevent the two liquid crystal display panels 2 from appearing. The images are overlapped, thereby preventing the user from seeing the image displayed by the other liquid crystal display panel 2 when watching the image of one liquid crystal display panel 2 . In addition, the light-emitting unit 32 of a single backlight module 3 can provide light to the two liquid crystal display panels 2 at the same time, which can effectively reduce the thickness of the double-sided liquid crystal display device 100, so as to save the space occupied by the use, and can indeed Reach the object that the present invention seeks.

Claims (5)

1. A double-sided liquid crystal display device, comprising two liquid crystal display panels; It is characterized in that: The double-sided liquid crystal display device also includes a casing and a backlight module, the casing includes a partition wall, and two surrounding walls respectively extending from the outer periphery of the partition wall in opposite directions, and the partition wall is made of an opaque material Each of the surrounding walls and the partition wall jointly define an accommodating space, each of the surrounding walls forms an opening communicating with the accommodating space, and each of the liquid crystal display panels is arranged in the corresponding accommodating space and adjacent to Corresponding to the opening, the backlight module includes two optical film units and a light-emitting unit, each of the optical film units is disposed in the corresponding accommodating space and between the partition wall and the corresponding liquid crystal display panel, The light emitting unit is disposed on the partition wall to provide light to the two optical film units. 2. The double-sided liquid crystal display device according to claim 1, wherein the partition wall is formed with at least one installation hole communicating with each of the accommodating spaces, and the light emitting unit includes at least one installation hole disposed in the installation hole. The shape of the light source matches the shape of the installation hole, and the light source is embedded in the installation hole and closes the installation hole. 3. The double-sided liquid crystal display device according to claim 2, characterized in that: the partition wall is formed with a plurality of installation holes spaced apart from each other, the light emitting unit includes a plurality of light sources, and each of the light sources is arranged on the corresponding installation hole. In the hole, the shape of each light source matches the shape of the corresponding installation hole, and each light source is embedded in the corresponding installation hole and closes the corresponding installation hole. 4. The double-sided liquid crystal display device according to claim 1, wherein the partition wall comprises a partition wall body, a plurality of first protruding wall bodies, and a plurality of second protruding wall bodies, and the partition wall The body includes a first surface and a second surface opposite to the first surface, the first 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 toward the direction away from the second surface and arranged at intervals with each other, each of the first protruding walls defines a first accommodating groove communicated with the corresponding accommodating space, and the second protruding The walls protrude from the second surface in a direction away from the first surface and are spaced apart from each other, and each of the second protruding walls defines a second accommodating groove communicating with the corresponding accommodating space , the light emitting unit includes a plurality of light sources respectively fixed in the first accommodating groove and the second accommodating groove. 5. The double-sided liquid crystal display device according to claim 4, wherein each of the first protruding wall body and the second protruding wall body has a first wall parallel to and spaced apart from the partition wall body part, and two second wall parts respectively connected between the opposite end of the first wall part and the partition wall body, and the two second wall parts extend obliquely away from the first wall part toward the partition wall body direction gradually .