CN106502001A - A kind of backlight module, display unit and electronic equipment - Google Patents

Abstract

The invention relates to the field of display technology, in particular to a backlight module, a display device and electronic equipment. The backlight module includes a plastic frame, a light guide plate, a light source, and a photoelectric conversion module arranged on the light output side away from the light guide plate, and the photoelectric conversion module is used for converting absorbed light energy into electrical energy. The backlight module can convert light energy into electric energy through the added photoelectric conversion module, which can conveniently supplement electric energy and prolong the use time in the case of lack of electric energy such as outdoors.

Description

A kind of backlight module, display device and electronic equipment

technical field

The invention relates to the field of display technology, in particular to a backlight module, a display device and electronic equipment.

Background technique

With the smog rampant in recent years, people gradually realize the importance of green, environmental protection and sustainable development. In today's society, liquid crystal display devices that are favored are developing in the direction of thinness, narrow frame, and energy saving. Especially for outdoor liquid crystal display devices, energy saving, aesthetics and durability have become important reasons for users to choose.

For liquid crystal display devices, most of the power consumption of the entire liquid crystal display device is occupied by the backlight module. The existing technology is limited by parameters such as the light effect of LED (Light Emitting Diode, light emitting diode) and the gain of optical film materials. The power consumption of the backlight module is already close to the design limit, which leads to the defect that the existing liquid crystal display device has a short service time due to the inconvenience of supplementing electric energy when it is used outdoors.

Contents of the invention

The invention provides a backlight module, a display device and electronic equipment. The backlight module can convert light energy into electric energy through an additional photoelectric conversion module, and can conveniently supplement electric energy in the absence of electric energy outdoors, etc., and can prolong the use. time.

To achieve the above object, the present invention provides the following technical solutions:

A backlight module includes a plastic frame, a light guide plate and a light source, and also includes a photoelectric conversion module arranged on the light output side away from the light guide plate, and the photoelectric conversion module is used for converting absorbed light energy into electrical energy.

Since the above-mentioned backlight module is provided with a photoelectric conversion module capable of converting light energy into electrical energy on the light-emitting side away from the light guide plate, and the backplane of the backlight module in the prior art is canceled at the same time, the above-mentioned backlight module can be used during use. , especially when used outdoors or in places with strong light, when there is light at the photoelectric conversion module, the light energy can be absorbed through the photoelectric conversion module and converted into electrical energy, and the generated electrical energy can be stored or directly supplied The light source of the backlight module or the display panel is used, so that the display device using the backlight module can supplement the power and display in the case of lack of power outdoors, so as to solve the problem of using the existing display device in the case of lack of power outdoors. Short time issue.

Therefore, the backlight module can convert light energy into electric energy through the added photoelectric conversion module, which can conveniently supplement electric energy and prolong the use time in the case of lack of electric energy such as outdoors.

Preferably, it further includes a transflective layer disposed between the light guide plate and the photoelectric conversion module.

The above-mentioned backlight module replaces the reflection sheet of the backlight module in the prior art with a semi-transparent and semi-reflective layer arranged between the light guide plate and the photoelectric conversion module; since the semi-transparent and semi-reflective layer is arranged between the light guide plate and the photoelectric conversion module, When the light source of the backlight module is working, the light emitted by the light source can reflect a part of the light to the light-emitting side of the light guide plate through the semi-transparent and semi-reflective layer, and provide the required backlight for the display panel, and at the same time, another part of the light emitted by the light source will pass through the light guide plate. After entering the photoelectric conversion module, the photoelectric conversion module absorbs light energy and converts light energy into electrical energy. At the same time, the light in the environment such as sunlight can also pass through the photoelectric conversion module and then pass through the semi-transparent The layer enters the light guide plate to provide a part of backlight for the display panel. When the brightness of the backlight required by the display panel remains unchanged, part of the backlight provided by the light source can be reduced, thereby reducing the power of the light source, thereby reducing the energy consumption of the light source. . Therefore, the above-mentioned backlight module can reduce the energy consumption of the light source while making full use of the light emitted by the light source through the provided semi-transparent and semi-reflective layer.

Preferably, a power module is further included, and the output end of the photoelectric conversion module is electrically connected to the power module and/or the light source.

Since the above-mentioned backlight module can also include a power supply module, since the output end of the photoelectric conversion module is electrically connected to the power supply module and/or the light source, the power supply module can even store electric energy or release electric energy, when the photoelectric conversion module will absorb light energy After converted into electrical energy, the generated electrical energy can be directly input into the power module for storage, and then released through the power module and supplied to the light source, display panel or any electronic device that requires electrical energy when needed, or the generated electrical energy can be directly supplied to Light sources, display panels, or any electronic device that requires electrical energy.

Preferably, a first transparent protective layer is provided on a side of the photoelectric conversion module away from the light guide plate.

The above-mentioned backlight module is provided with a first transparent protective layer on the side of the photoelectric conversion module away from the light guide plate, through which the backlight module can be safely protected while ensuring that the photoelectric conversion module absorbs light energy smoothly. The added first transparent protective layer can make the backlight module have anti-damage and dustproof effects, thereby improving the service life of the backlight module and the display device.

Preferably, the first transparent protective layer includes a first protective glass and a first explosion-proof film formed on one side of the first protective glass.

Since the first transparent protective layer includes the first protective glass and the first explosion-proof film, the use safety of the backlight module can be improved through the first protective glass, and the appearance and waterproof performance of the backlight module can also be improved, and the above-mentioned backlight The module can further improve the use safety, surface strength and wear resistance of the backlight module through the first explosion-proof film, and then can improve the use safety, appearance and durability of the backlight module and the display device through the first transparent protective layer. Abrasion resistance and water resistance.

Preferably, the photoelectric conversion module is a transparent photovoltaic cell or a semitransparent solar thin film cell.

Preferably, the photoelectric conversion module includes graphene.

The present invention also provides a display device, which includes a display panel and any backlight module provided by the above technical solutions.

Since the display device includes any one of the backlight modules in the above-mentioned technical solutions, and the backlight module includes a photoelectric conversion module capable of converting light energy into electrical energy, the above-mentioned display device can also use the photoelectric conversion module to absorb light. Light energy is converted into electric energy, so that the display device can supplement electric energy in the case of lack of electric energy such as outdoors, so as to solve the problem of short service time of the existing display device in the case of lack of electric energy such as outdoors.

Therefore, the display device can conveniently supplement electric energy in the case of lack of electric energy such as outdoors, and can prolong the use time.

Preferably, a second transparent protective layer is installed on the light emitting side of the display panel.

The above-mentioned display device is equipped with a second transparent protective layer on the light-emitting side of the display panel, and the display panel can be safely protected through the second transparent protective layer without affecting the normal display of the display device, and the display panel can be displayed through the second transparent protective layer. The panel has anti-damage and dust-proof effects, thereby improving the service life of the display device.

Preferably, the light output side of the display panel and/or the side of the backlight module facing away from the display panel is provided with a brightness detection component connected to the PCB signal, and the brightness detection component is used to detect ambient brightness.

The above-mentioned display device can detect the brightness of ambient light through the brightness detection component provided, and can input the detection result to the PCB, so as to output a control signal to the display panel through the PCB, so as to control the display brightness of the display panel, so that the display brightness of the display panel and /or the contrast is adaptively adjusted according to the change of the ambient brightness, so that the display device has a better display effect, thereby improving the viewing effect of the user.

Preferably, the brightness detection component is a photosensitive sensor.

In addition, the present invention also provides an electronic device, which includes any one of the display devices provided by the above technical solutions.

Description of drawings

FIG. 1 is a schematic structural diagram of a display device provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiments of the present invention provide a backlight module, a display device, and electronic equipment. The display device includes a backlight module, and the electronic equipment includes a display device; the backlight module can convert light energy to For electric energy, it can conveniently supplement electric energy in the case of lack of electric energy such as outdoors, and can prolong the use time. The above-mentioned display device may be a liquid crystal display screen, a liquid crystal television, a computer monitor, and the like. The aforementioned electronic devices include but are not limited to notebook computers, outdoor advertising display screens, and the like.

Wherein, please refer to FIG. 1 , a backlight module provided by an embodiment of the present invention includes a plastic frame 1 , a light guide plate 2 and a light source 3 , and the backlight module also includes a photoelectric conversion module 4 disposed on the light output side away from the light guide plate 2 , the photoelectric conversion module 4 is used to convert the absorbed light energy into electrical energy.

The display device shown in the structure of Figure 1 includes a backlight module, a display panel 8 and a housing 11, the display panel 8 is located at the light-emitting side of the backlight module, the backlight module includes a plastic frame 1, and a guide provided in the plastic frame 1. The light plate 2, the light source 3 located on one side of the light guide plate 2 and arranged in the plastic frame 1, the photoelectric conversion module 4 arranged on the light output side away from the light guide plate 2, and the semi-transparent light source installed between the photoelectric conversion module 4 and the light guide plate 2 The semi-reflective layer 5, when the backlight module is working, the light source 3 is energized and emits light, and the light emitted by the light source 3 enters the light guide plate 2 from one side of the light guide plate 2, and the point light source is changed into a surface light source through the light guide plate 2, providing the display panel 8 with backlight.

Since the above-mentioned backlight module is provided with a photoelectric conversion module 4 capable of converting light energy into electric energy on the light-emitting side away from the light guide plate 2, and the backplane of the backlight module in the prior art is canceled at the same time, therefore, the above-mentioned backlight module is used. During the process, especially when used outdoors or in a place with strong light, when there is light at the photoelectric conversion module 4, the light energy can be absorbed by the photoelectric conversion module 4 and converted into electrical energy, and the generated electrical energy can be stored. It can also be directly supplied to the light source 3 or the display panel 7 of the backlight module, so that the display device adopting the backlight module can supplement the electric energy and display in the case of lack of electric energy outdoors, so as to solve the problem that the existing display device is outdoors, etc. The problem of short usage time in case of lack of power.

Therefore, the backlight module can convert light energy into electric energy through the added photoelectric conversion module, which can conveniently supplement electric energy and prolong the use time in the case of lack of electric energy such as outdoors.

In a specific embodiment, as shown in the structure of FIG. 1 , the above-mentioned backlight module further includes a transflective layer 5 disposed between the light guide plate 2 and the photoelectric conversion module 4 .

The above-mentioned backlight module replaces the reflection sheet of the backlight module in the prior art by the semi-transparent and semi-reflective layer 5 arranged between the light guide plate 2 and the photoelectric conversion module 4; Between the conversion modules 4, when the light source 3 of the backlight module is working, the light emitted by the light source 3 can reflect a part of the light through the semi-transparent layer 5 to the light-emitting side of the light guide plate 2, and provide the required backlight to the display panel 7, At the same time, another part of the light emitted by the light source 3 will enter the photoelectric conversion module 4 after passing through the light guide plate 2 and the semi-transparent and semi-reflective layer 5. The photoelectric conversion module 4 absorbs light energy and converts light energy into electrical energy. The light in the light can also pass through the photoelectric conversion module 4 and then pass through the transflective layer 5 and enter the light guide plate 2 to provide a part of the backlight for the display panel 7. When the brightness of the backlight required by the display panel 7 remains unchanged, it can reduce Part of the backlight provided by the light source 3 can reduce the power of the light source 3 , thereby reducing the energy consumption of the light source 3 . Therefore, the above-mentioned backlight module can reduce the energy consumption of the light source 3 while making full use of the light emitted by the light source 3 through the provided semi-transparent and semi-reflective layer 5 .

Specifically, the above-mentioned backlight module may further include a power supply module, and the output end of the photoelectric conversion module 4 is electrically connected to the power supply module and/or the light source 3 .

The semi-transparent and semi-reflective layer 5 may be formed of a semi-transparent and semi-reflective sheet, or may be formed of a semi-transparent and semi-reflective film layer formed on one side of the light guide plate 2 .

Since the above-mentioned backlight module can also include a power supply module, since the output end of the photoelectric conversion module 4 is electrically connected to the power supply module and/or the light source 3, the power supply module can store electric energy or release electric energy. When the photoelectric conversion module 4 is absorbing After the light energy is converted into electrical energy, the generated electrical energy can be directly input into the power module for storage, and then released through the power module and supplied to the light source 3, the display panel 7 or any electronic equipment that requires electrical energy, or directly The generated electrical energy is supplied to light sources, display panels or any electronic equipment that requires electrical energy.

Furthermore, as shown in the structure of FIG. 1 , the above-mentioned backlight module is provided with a first transparent protective layer 6 on the side of the photoelectric conversion module 4 facing away from the light guide plate 2 .

The above-mentioned backlight module is provided with a first transparent protective layer 6 on the side of the photoelectric conversion module 4 away from the light guide plate 2, through which the first transparent protective layer 6 can protect the backlight module under the condition that the photoelectric conversion module 4 absorbs light energy smoothly. For safety protection, the added first transparent protective layer 6 can make the backlight module have anti-damage and dust-proof effects, thereby improving the service life of the backlight module and the display device.

In order to further enhance the protective performance of the first transparent protective layer 6 , the first transparent protective layer 6 includes a first protective glass and a first explosion-proof film formed on one side of the first protective glass.

Since the first transparent protective layer 6 includes the first protective glass and the first explosion-proof film, the use safety of the backlight module can be improved through the first protective glass, and the appearance and waterproof performance of the backlight module can also be improved, and the above-mentioned The backlight module can further improve the use safety, surface strength and wear resistance of the backlight module through the first explosion-proof film, and then the use safety and appearance of the backlight module and the display device can be improved through the first transparent protective layer 6 , wear resistance and waterproof performance.

At the same time, in order to increase other functions of the first transparent protective layer 6 , other coatings or film layers can also be added in the first transparent protective layer 6 , such as film layers that increase light absorption efficiency.

Based on the embodiments of the above-mentioned various backlight modules, the photoelectric conversion module 4 of the above-mentioned backlight module can be a transparent photovoltaic cell or a semi-transparent solar thin film cell.

When the above-mentioned photoelectric conversion module 4 is a transparent photovoltaic cell or a semi-transparent solar thin film cell, the light outside the display device can pass through the photoelectric conversion module 4, the semi-transparent and semi-reflective layer and the light guide plate, and enter the display panel to provide backlight for the display panel. The power consumption of the backlight module can be reduced, and the transparent structure can also increase the aesthetic appearance of the backlight module and the display device.

When the above-mentioned photoelectric conversion module 4 is a transparent photovoltaic cell, the photoelectric conversion module 4 may include graphene, that is, the photoelectric conversion module 4 absorbs light through graphene, and converts light energy into electrical energy through graphene. 4, while reducing the volume and weight of 4, it can also improve the conversion efficiency of light energy into electrical energy and the generated electricity; The increase in overall volume and weight brought about by module 4.

In addition, as shown in FIG. 1 , an embodiment of the present invention also provides a display device, the display device includes a display panel 7 , and the display device further includes any one of the backlight modules provided in the above embodiments. As shown in the structure of FIG. 1 , a display panel 7 is provided on the light emitting side of the light guide plate 2 of the backlight module. According to the prior art, components such as a diffusion sheet and a prism sheet may be arranged between the display panel 7 and the light guide plate 2 .

Since the display device includes any one of the backlight modules in the above-mentioned embodiments, and the backlight module includes a photoelectric conversion module 4 capable of converting light energy into electrical energy, the above-mentioned display device can also absorb light through the photoelectric conversion module 4. The light energy is converted into electric energy, so that the display device can supplement the electric energy in the case of lack of electric energy outdoors, etc., so as to solve the problem of short use time of the existing display device in the case of lack of electric energy outdoors.

Therefore, the display device can conveniently supplement electric energy in the case of lack of electric energy such as outdoors, and can prolong the use time.

In a specific implementation manner, as shown in the structure of FIG. 1 , a second transparent protective layer 8 is provided on the light emitting side of the display panel 7 .

The above-mentioned display device is equipped with a second transparent protective layer 8 on the light-emitting side of the display panel 7, and the display panel 7 can be safely protected by the second transparent protective layer 8 without affecting the normal display of the display device. The layer 8 can make the display panel 7 have anti-damage and dust-proof effects, thereby improving the service life of the display device.

In the same way, the second transparent protective layer 8 may also include a second protective glass and a second explosion-proof film formed on one side of the second protective glass, the use safety of the display panel 7 can be improved by the second protective glass, and at the same time it can be improved. The aesthetic appearance and waterproof performance of the display device, and the above-mentioned display device can further improve the use safety, surface strength and wear resistance of the display device through the second explosion-proof film, and then the use of the display device can be improved through the second transparent protective layer 8 Safety, aesthetics, abrasion resistance and water resistance.

Of course, in order to enhance the display effect of the display device, coatings or film layers for other functions may also be added in the second transparent protective layer 8 .

Specifically, the light output side of the display panel 7 and/or the side of the backlight module away from the display panel 7 is provided with a brightness detection assembly 10 signal-connected to a PCB (Printed Circuit Board, printed circuit board) 9, and the brightness detection assembly 10 is used for Detect ambient brightness. As shown in the structure of Figure 1, a brightness detection component 10 is embedded in the light emitting side of the display panel 7, that is, the second transparent protective layer 8, and on the side of the backlight module that is away from the display panel 7, that is, the first transparent protective layer A brightness detection component 10 is embedded in layer 6 .

The above-mentioned display device can detect the brightness of ambient light through the brightness detection assembly 10 provided, and the detection result can be input in the PCB9, so as to output a control signal to the display panel through the PCB9, to control the display brightness of the display panel 7, so that the display panel 7 The display brightness and/or contrast of the display device are adaptively adjusted according to the change of the ambient brightness, so that the display device has a better display effect, thereby improving the user's viewing effect.

Furthermore, the brightness detection component 10 may be a photosensitive sensor, and the brightness detection component 10 may also be other detection elements capable of detecting brightness.

Because the photosensitive sensor has the characteristics of high detection sensitivity, it can quickly and accurately detect the ambient brightness, and input the detection signal into the PCB9, so that the PCB9 generates the control signal in time, and adjusts the display brightness and contrast of the display panel 7 in time. Quickly adjust the display effect so that the display effect of the display device is always in the best state.

Finally, the present invention also provides an electronic device, which includes any one of the display devices provided in the above embodiments.

Apparently, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims (10)

1. a kind of backlight module, including glue frame, light guide plate and light source, it is characterised in that also include going out away from the light guide plate The photoelectric conversion module that light side is arranged, the photoelectric conversion module are used for for the luminous energy of absorption being converted to electric energy.

2. backlight module according to claim 1, it is characterised in that also include being arranged at the light guide plate with the photoelectricity Semi-transflective reflective layer between modular converter.

3. backlight module according to claim 1, it is characterised in that deviate from the light guide plate in the photoelectric conversion module Side be provided with the first protective clear layer.

4. backlight module according to claim 3, it is characterised in that first protective clear layer includes the first protection glass Glass and it is formed at the first rupture pressure disc of the first protective glass side.

5. the backlight module according to any one of claim 1-4, it is characterised in that the photoelectric conversion module is transparent light Volt battery or translucent solar film battery.

6. backlight module according to claim 5, it is characterised in that the photoelectric conversion module includes Graphene.

7. a kind of display device, including display floater, it is characterised in that also include the back of the body as described in any one of claim 1-6 Light module.

8. display device according to claim 7, it is characterised in that be provided with second in the light emission side of the display floater Protective clear layer.

9. display device according to claim 7, it is characterised in that the light emission side of the display floater and/or the back of the body Light module is provided with the brightness detection components being connected with PCB signals, the brightness detection group away from the side of the display floater Part is used for detecting ambient brightness.

10. a kind of electronic equipment, it is characterised in that include the display device as described in any one of claim 7-9.