TWI578064B - Liquid crystal display module backlight automatic detection structure - Google Patents

Description

Backlight automatic detection structure of liquid crystal display module

The invention relates to a backlight automatic detecting structure, and more particularly to a backlight automatic detecting structure of a liquid crystal display module, which can be easily set without destroying the structure of the liquid crystal display module, thereby not sacrificing visual Zone, and there will be no light leakage problems.

Conventionally, liquid crystal displays having high precision requirements for brightness and gray scale are medical displays or art displays, and their brightness must be kept constant and cannot be changed with time and ambient temperature.

However, the liquid crystal display module for manufacturing the liquid crystal display itself does not have a photo sensor, so an optical sensor must be additionally mounted on the liquid crystal display module.

At present, there are two ways to mount the photo sensor to the liquid crystal display module. The first method is to mount the photo sensor on the front corner of the liquid crystal panel of the liquid crystal display module. The disadvantage is that the center point cannot be measured. Position, and will sacrifice the visible area; the second method is to embed the back cover of the liquid crystal display module into the light sensor, although the shortcoming of the first method can be overcome, but the structure of the liquid crystal display module is destroyed. Moreover, it is difficult to fix. In addition, if the position of the punched hole is not properly sealed, the problem of light leakage is likely to occur, resulting in misalignment of the photo sensor.

Therefore, how to invent a light sensor can be easily set without destroying the structure of the liquid crystal display module, without sacrificing the visible area, and there is no light leakage problem, which will be actively disclosed by the present invention. Where.

The object of the present invention is to provide a backlight automatic detecting structure of a liquid crystal display module, which can be easily set without damaging the structure of the liquid crystal display module, thereby not leaving the visible area, and no light leakage problem occurs.

To achieve the above and other objects, the present invention provides a backlight automatic detection structure of a liquid crystal display module, which is disposed in a backlight module of a liquid crystal display module, and the backlight automatic detection structure includes: at least one light sensor And an illumination source disposed on the backlight module to sense brightness between the illumination source and a liquid crystal panel of the liquid crystal display module.

In the backlight automatic detection structure of the present invention, the backlight module is of a direct type, and the light source is a plate-shaped body having an LED light source.

In the backlight automatic detection structure of the present invention, the backlight module is an edge light type, and the light source is a strip body having an LED light source.

In the backlight automatic detection structure of the present invention, the photo sensor is plural and distributed in the illumination source.

In the backlight automatic detection structure of the present invention, when the photo sensors are five, the photo sensors are respectively disposed at four corners and a center of the light source.

In summary, the backlight automatic detection structure of the liquid crystal display module of the present invention can be easily set without destroying the structure of the liquid crystal display module by the above structure, so that the visible area is not sacrificed, and There is a light leakage problem.

10‧‧‧Light sensor

1000‧‧‧LCD module

1100‧‧‧Backlight module

1110‧‧‧Light source

1120‧‧‧Light guide plate

1200‧‧‧ LCD panel

1300‧‧‧ housing

FIG. 1 is a schematic diagram of a direct type backlight module in which a backlight automatic detecting structure is disposed in a liquid crystal display module.

FIG. 2 is a cross-sectional view of a direct type backlight module in which a backlight automatic detecting structure is disposed in a liquid crystal display module.

FIG. 3 is a schematic diagram of the edge-lit backlight module of the liquid crystal display module provided by the backlight automatic detection structure of the present invention.

FIG. 4 is a cross-sectional view of the edge-lit backlight module of the liquid crystal display module according to the backlight automatic detection structure of the present invention.

FIG. 5 is another schematic diagram of the direct backlight module of the liquid crystal display module provided by the backlight automatic detection structure of the present invention.

In order to fully understand the object, features and advantages of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings, which are illustrated as follows: Referring to FIG. 1 and FIG. The schematic diagram and cross-sectional view of the liquid crystal display module 1000 disposed on the liquid crystal display module 1000 of the liquid crystal display module of the present invention. The liquid crystal display module 1000 is composed of a backlight module 1100, a liquid crystal panel 1200 and a casing 1300, and the backlight automatic detection structure is disposed on the backlight module 1100. More specifically, the backlight is automatically detected. The structure includes at least one light sensor 10 disposed on a light source 1110 of the backlight module 1100 to sense brightness between the light source 1110 and a liquid crystal panel 1200 of the liquid crystal display module 1000. Moreover, as shown in the figure, the backlight module 1100 is of a direct type, and the light source 1110 is a plate-shaped body having an LED light source.

As shown in FIG. 1 and FIG. 2 , the photo sensor 10 is directly disposed on the illumination source 1110 (ie, the photosensor 10 is integrated with the illumination source 1110 ) and is located behind the liquid crystal panel 1200 . The visible area is not sacrificed, and the structure of the liquid crystal display module 1000 is not destroyed, so that no light leakage problem occurs. In addition, since the liquid crystal panel 1200 and the housing 1300 form a closed space, the sensing effect of the photo sensor 10 is better without light leakage; further, the photo sensor 10 After being disposed in the light source 1110 in advance, the backlight module 1100, the liquid crystal panel 1200, and the casing 1300 are assembled to form the liquid crystal display module 1000. Therefore, the assembly process can be effectively shortened.

Although not shown, after the light sensor 10 senses the brightness, the information is transmitted through a wire to adjust the light-emitting intensity of the light source 1110, thereby maintaining the brightness between the light source 1110 and the liquid crystal panel 1200.

In summary, the backlight automatic detection structure of the liquid crystal display module of the present invention can be easily set without destroying the structure of the liquid crystal display module by the above structure, so that the visible area is not sacrificed, and There is a light leakage problem.

Although there is only one photo sensor 10 in FIG. 1 and FIG. 2, when the photo sensor 10 is plural and dispersed in the light source 1110, the light source 1110 can be more accurately sensed. The brightness between the liquid crystal panel 1200 and the liquid crystal panel 1200 of the liquid crystal display module 1000.

3 and FIG. 4, which are schematic diagrams and cross-sectional views of the liquid crystal display module 1000 in the liquid crystal display module of the present invention. In the figure, the backlight module 1100 is a side view. The light source 1110 is a strip-shaped body having an LED light source. In addition, the backlight module 1100 further has a light guide plate 1120. The light source emitted by the light source 1110 is uniformly guided by the light guide plate 1120. The liquid crystal panel 1200 is introduced.

Finally, as shown in FIG. 5, when the backlight module 1100 is in a direct type, in order to more accurately sense the brightness between the light source 1110 and the liquid crystal panel 1200, the photo sensor 10 is preferably five. They are respectively disposed at four corners and a center of the light source 1110.

In addition, although not shown, the photo sensor 10 is directly disposed on the illumination source 1110 at the same time as the illumination source 1110, so that the photosensor 10 and the illumination source 1110 are integrated, so Additional paste processing is required.

In summary, the backlight automatic detection structure of the liquid crystal display module of the present invention can be easily set without destroying the structure of the liquid crystal display module by the above structure, so that the visible area is not sacrificed, and There is a light leakage problem.

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

10‧‧‧Light sensor

1000‧‧‧LCD module

1100‧‧‧Backlight module

1110‧‧‧Light source

1200‧‧‧ LCD panel

1300‧‧‧ housing

Claims (5)

A backlight automatic detection structure of a liquid crystal display module is disposed in a backlight module of a liquid crystal display module, wherein the backlight automatic detection structure comprises: at least one light sensor, and an illumination source for fabricating the backlight module At the same time, the photo sensor is disposed on the illumination source of the backlight module, so that the photo sensor is integrated with the illumination source, and the photo sensor is directed toward a liquid crystal of the liquid crystal display module. a surface of the panel to sense brightness between the light source and the liquid crystal panel of the liquid crystal display module. The backlight automatic detection structure according to claim 1, wherein when the backlight module is of a direct type, the light source is a plate body having an LED light source. The backlight automatic detection structure of claim 1, wherein when the backlight module is of the sidelight type, the illumination source is a strip having an LED light source. The backlight automatic detection structure according to any one of claims 1 to 3, wherein the photo sensor is plural and distributed to the illumination source. The backlight automatic detection structure of claim 2, wherein when the photo sensors are five, the photo sensors are respectively disposed at four corners and a center of the illumination source.