Patent Application
20160070055
The present invention relates to the technical field of the liquid crystal display; especially, to a light bar component and also a backlight module having the light bar component and an LCD device comprising the backlight module.
The LCD device usually has a liquid crystal panel and a backlight module which is disposed in opposite to the liquid crystal panel. The backlight module provides light source for the liquid crystal panel to show the image on the panel.
Because the LED light source has many outstanding characteristics, for example, low power consumption, long life time and color reproduction characteristic and contrast. In the LCD display nowadays, the backlight source in the backlight module uses LEDs. As shown in
In some backlight modules, a pair of the light bars is required, and each light bar 1 and electric power 5 respectively connects with the different flexible flat cable 6 by the means of plugging. When the coil generates skew, the socket is easy to be damaged. Moreover, while a large number of the flexible flat cables are used, the much space is occupied. It results in the inconvenience of the assembly and affects the time and yield of the product assembly. Otherwise, the above structure of the light bar components, the height of the electric connectors 4 is usually higher than the height of the LED lamp 3. Therefore, it needs more space to assemble the light bar. It is not conducive to achieve the narrow bezel design of the LCD device.
In order to solve the above mentioned issues exiting in the traditional art, the present invention provides a light bar component, the light bar component is used in the backlight module. The present invention can reduce the technical difficulty of the product assembly, improve the produce yield and save the assemble time and the cost.
In order to achieve the goal mentioned before, the present invention adopts the following technical solution:
A light bar component which comprises:
two or more than two light bars, each of the light bars comprises a light source print circuit board and a plurality of light sources assembled on the light source print circuit board; and
a flexible print circuit board, comprising a main body portion of the flexible print circuit board and a lead-out portion of a golden finger, wherein the main body portion of the flexible print circuit board connects with the light source print circuit board of all of the light bars, the lead-out portion of the golden finger connects with a power source, the power source provides the driving voltage for the light bars through the flexible print circuit board.
Further, the light bar component comprises two light bars, the main body portion of the flexible print circuit board is a long strip structure and each of two ends of the main body portion connects to the light source print circuit board one of the light bars, the lead-out portion of the golden finger extracts from middle portion of the main body portion of the flexible print circuit board.
Further, the main portion of the flexible print circuit board further connects with a plurality of the light sources which form a light bar structure on the main portion of the flexible print circuit board.
Further, the light source connects with the main portion of the flexible print circuit board by surface mounting technology.
Further, the main portion of the flexible print circuit board connects with the light source print circuit board by the hot pressing technology.
Further, the light source is LED.
On the other hand, the present invention provides a backlight module comprising a backlight source and a guide plate, and the backlight source is located in a side face of the light guide plate, wherein the backlight source comprises the light bar component.
The present invention further provides a LCD device, comprising a liquid crystal panel and a backlight module, and the liquid crystal panel is set in opposite to the backlight module. The backlight module provides the light for the liquid crystal panel to show the images on the liquid crystal panel, wherein the backlight module is the above mentioned backlight module.
In the light bar component of the embodiment of the present invention and the backlight module adopts the light bar component, many light bars can use the connection of the flexible print circuit board and the electric power. The electric power provides the driving voltage for the light bar via the flexible print circuit board. It can reduce the use amount of the wiring harness. Moreover, the electric connector is not used in the light bar component. The flexible print circuit combines with the light source print circuit board via the hot pressing technology. The present invention lowers the difficulty of the product assembly, enhances the product yield, and saves assembly time and the cost. Otherwise, because of the decrease of the harness use amount and non-use of the electric connector, the light bar component occupies less assembly space to achieve the narrow bezel design of the LCD device.
As the traditional technology mentioned above, the present invention provides a light bar component, and the light bar component comprises two and more than tow light bars and the flexible print circuit board. Each of the light bars comprises a light source print circuit board and a plurality of light sources assembled on the light source print circuit board. The flexible print circuit board comprises a main body portion of the flexible print circuit board and a lead-out portion of a golden finger, and the main body portion of the flexible print circuit board connects with the light source print circuit board of all of the light bars. The lead-out portion of the golden finger connects with the power source. The light source offers the driving voltage to the light bars via the flexible print circuit board.
As above mentioned light bar component which is used in the backlight module, the electric power source provides the driving voltage to the light bar via the flexible print circuit board because a plurality of the light bars can use the same flexible print circuit board to connect to the power source. Moreover, the electric connector is not used again in the light bar component. The flexible print circuit board directly connects with the light source print circuit board by the hot pressing process, such that the technical difficulty of the produce assembly is lowered, the product yield is improved, and the assembly time and the cost are saved.
In order to elaborate the technical characteristics and the structure of the present invention well, the following examples combining with the accompanying drawings in detail.
The backlight source 201 comprises the light bar component. Specifically, in the embodiment, as shown in
The main body portion 21 of the flexible print circuit board connects with the light source print circuit board 11 by the hot pressing technology without disposing any electric connector on the light source print circuit board 11.
In the other preferred embodiment, as shown in
In summary, in the light bar component of the present invention and the backlight module having the light bar component, a plurality of the light bars can use only one flexible print circuit board to connect with the power source. The power source provides the driving voltage to the light bar through the flexible print circuit with reducing the use amount of wire harness; furthermore, the electric connector is not used anymore in the light bar component. The flexible print circuit board combines with the light source print circuit board by the hot pressing technology and it can reduce the technical difficulty of the product assembly, enhance the product yield and save the assembly time and the cost. Otherwise, because of the reduction of the amount use of the wire harness and non-use of the electric connector, the light bar component has less assembly space such that it is conducive for the narrow bezel design of the liquid crystal display.
It should be noted that, herein, relational terms such as first and second, and the like are only used to distinguish one entity or operation from another entity or action separate, and does not necessarily imply that these entities or the existence of any such relationship or order between actual or operation. Moreover, the terms “comprises,” “comprising,” or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a series of elements including the process, method, article or device that includes only those elements not expressly listed and further comprising other elements, or further include such process, method, article or device inherent elements. Without more constraints, by the statement “includes one . . . ” element defined does not exclude the existence of additional identical elements in the process, including the element, method, article, or apparatus.
Clearly, the scope of the present invention is not limited to the specific embodiments of appeal, the person skilled in the art of the present invention can be various modifications and variations are possible without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the present invention and the claims of the invention are within the scope of technical equivalents, the present invention is also intended to include these changes and modifications included.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201410456333.5 | Sep 2014 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2014/086632 | 9/16/2014 | WO | 00 |
