CN100419535C - display device - Google Patents

Abstract

The present invention provides a display device, which includes a backlight module, a panel module and a light concentrating module, the backlight module is connected to one end of the panel module, and the other end of the panel module is connected to the light concentrating module group connections. The display device can make full use of external ambient light and save power.

Description

display device

【Technical field】

The present invention relates to a display device, in particular to a power-saving display device.

【Background technique】

Since portable LCD products emphasize portability, mobile communication and power saving, and can be used indoors and outdoors, day and night, the small and medium-sized LCD technology applied to these products will also match this trend.

As we all know, the liquid crystal in the liquid crystal display panel itself does not have luminous characteristics. In order to achieve the display effect, a backlight module must be provided for the liquid crystal display panel. Its function is to provide the liquid crystal display panel with a surface light source with sufficient brightness and uniform distribution. Its operating principle It is: the light enters the light guide plate after being emitted from the light source, is reflected by the scattering unit of the light reflection layer of the light guide plate and is output from the light exit surface of the light guide plate, and cooperates with the enhancement effect of the diffuser plate and the prism sheet to provide sufficient and uniform light source distribution .

Please refer to FIG. 1 , which is a schematic structural diagram of a backlight module of a display device in the prior art. The backlight module 1 is mainly composed of a light source 11 , a light guide plate 12 , a reflection plate 13 , a prism plate 14 and a diffuser plate 15 . The light source 11 is a cold cathode fluorescent lamp (CCFL). The light emitted from the light source 11 is incident on the prism plate 14 after passing through the light-guiding plate 12 from its light-emitting surface 123, and at the same time, the light emitted from the bottom surface 122 of the light-guiding plate 12 is reflected by the reflector 13 and returns to the light-guiding plate 12, and then It is incident into the prism plate 14, and finally emitted to the liquid crystal panel through the prism plate 14 and the diffuser plate 15.

The display products using this kind of backlight device can only use the internal light source no matter it is outdoors or indoors, day or night, and cannot meet the power saving requirements of current liquid crystal display products.

In view of this, it is necessary to provide a power-saving display device.

【Content of invention】

Hereinafter, a power-saving display device will be described with several embodiments.

In order to achieve the above content, a display device is provided, including a backlight module, a panel module and a light concentrating module, the backlight module is connected to one end of the panel module, and the other end of the panel module is connected to the light concentrating module. Module connection.

Further, the backlight module is connected to the panel module through a first hinge. The panel module is connected with the light concentrating module through a second hinge.

Compared with the prior art, the advantage of this display device is that: the light concentrating module can rotate around the second hinge, and the panel module can also rotate around the first hinge. When the three form a closed shape, the external ambient light It can be used as a light source, after being converged by the concentrating module, it is emitted to the backlight module, part of the light is reflected to the panel module, and the other part of the light enters the backlight module, and then is emitted to the panel module after reflection.

When the panel module is closely attached to the backlight module and the light concentrating module is hidden in the display device, the backlight module can be used, and the light emitted from the light source is emitted through the light guide plate of the backlight module to the panel module.

The display device can make full use of external ambient light to achieve the purpose of saving power.

【Description of drawings】

FIG. 1 is a schematic structural diagram of a backlight module of a display device in the prior art.

FIG. 2 is a schematic structural diagram of the first embodiment of the display device of the present invention.

FIG. 3 is a schematic structural diagram of the display device shown in FIG. 2 when ambient light is not used.

FIG. 4 is a schematic structural diagram of a second embodiment of the display device of the present invention.

FIG. 5 is a schematic structural diagram of a third embodiment of a display device of the present invention.

FIG. 6 is a schematic structural diagram of a fourth embodiment of a display device of the present invention.

FIG. 7 is a schematic structural diagram of a sixth embodiment of the display device of the present invention.

FIG. 8 is a schematic structural diagram of the display device shown in FIG. 7 when ambient light is not used.

FIG. 9 is a schematic structural diagram of a seventh embodiment of a display device of the present invention.

FIG. 10 is a schematic structural diagram of the display device shown in FIG. 9 when ambient light is not used.

【Detailed ways】

Please refer to FIG. 2 , which is a schematic structural diagram of the first embodiment of the display device of the present invention. The display device 100 includes a backlight module 110 , a panel module 120 and a light concentrating module 130 . The backlight module 110 includes a plurality of light sources 111 and a light guide plate 112 . The light guide plate 112 includes a light incident surface 1121 , a light exit surface 1122 and a bottom surface 1123 , wherein the bottom surface 1123 contains a highly reflective medium. The light source 111 is located on the side of the light incident surface 1121 of the light guide plate 112, which is a cold cathode fluorescent lamp (CCFL) or a light emitting diode (Light Emitting Diode, LED).

One end of the backlight module 110 is connected to one end of the panel module 120 through a first hinge 140, and the panel module 120 can rotate around the first hinge 140 so that it is parallel to the backlight module 110 or at an acute angle, preferably 0 degrees to 60 degrees. The other end of the panel module 120 is connected to one end of the focusing module 130 through a second hinge 150, and the focusing module 130 can rotate around the second hinge 150 so that it is clamped with the panel module 120. angle change. The light guide plate 112 , the panel module 120 and the light concentrating module 130 can be combined into a triangular structure and a planar structure through the first hinge 140 and the second hinge 150 .

The first hinge 140 and the second hinge 150 can be a member-type connection using gear meshing or a clamping column and a clamping hole, or a torsion spring connection in which a camshaft and a U-shaped spring cooperate, or a compression spring type connect. In addition, it can also be an automatic type, that is, a button is provided to expose the outside of the display device 100 , and the panel module is opened by means of a motor or a spring after the button is pressed.

The panel module 120 includes a panel 122 and a polarizer 121 located below the panel 122 , and the function of the polarizer 121 is to polarize light.

The function of the concentrating module 130 is to gather the ambient light from the outside and make the incident light uniform. It is a transparent structure and includes a lens module 131 and a diffuser plate 132 inside it. lens. The second hinge 150 has a shrinking effect, which can make the light concentrating module 130 close to the triangle. A supporting device 133 is provided at the end of the light concentrating module 130 away from the panel module 120 and close to the backlight module 110 to resist the backlight module 110 so that the light concentrating module 130 is engaged with the backlight module 110 , so that the retracted second hinge 150 obtains a reverse force and is fixed.

When external ambient light is used, the light concentrating module 130 is lifted, and the external ambient light is converged by the spherical or aspheric lens of the light concentrating module 130, diffused through the diffusion plate 132 on the light concentrating module 130, and the light becomes The light with uniform brightness is then emitted to the light exit surface 1122 of the light guide plate 112, part of the light is reflected to the panel module 120, and the other part of the light enters the bottom surface 1123 of the light guide plate 112, is reflected by the highly reflective medium on the bottom surface 1123, and then returns to the light guide plate 12 , and then emit to the panel module 120 through the light emitting surface 1122 of the light guide plate 112 .

When using the backlight module 110 , the panel module 120 is closely attached to the backlight module 110 , and the light concentrating module 130 is hidden in the display device 100 , please refer to FIG. 3 . The light emitted from the light source 111 is emitted from the light-emitting surface 1122 of the light guide plate 112. At the same time, the light directed to the bottom surface 1123 of the light guide plate 112 is reflected by the highly reflective medium on the bottom surface 1123 and returns to the light guide plate 112, and then passes through the light guide plate 112. The light emitting surface 1122 of the light emits, and finally emits on the panel 122 through the polarizer 121 .

Please refer to FIG. 4 , which is a schematic structural diagram of a second embodiment of a display device according to the present invention. The difference from the first embodiment is that the lens module 231 is a lens array.

Please refer to FIG. 5 , which is a schematic structural diagram of a third embodiment of a display device according to the present invention. The difference from the first embodiment is that the light source 311 is located below the light guide plate 312 .

Please refer to FIG. 6 , which is a schematic structural diagram of a fourth embodiment of a display device according to the present invention. The difference from the third embodiment is that the lens module 431 is a lens array.

A fifth embodiment of the display device of the present invention is that the backlight module is connected to the panel module and the light concentrating module in pairs, and fixed in a triangular shape. This embodiment can make full use of external ambient light, and is suitable for use in environments with sufficient light (sunlight, fluorescent lamps, etc.).

Please refer to FIG. 7 , which is a schematic structural diagram of a sixth embodiment of the display device of the present invention. A connection device 690 connects one end of the backlight module 610 and the panel module 620 respectively through the first hinge 601 and the second hinge 602, and the other end of the panel module 620 is provided with a first protrusion 603 perpendicular thereto, the The first bump 603 is connected to the light concentrating module 630 through a third hinge 604, and the size of the first bump 603 is suitable for the light concentrating module 630 and the panel module 620 to fit together in the folded state. The structure can form a quadrilateral when using external ambient light. It can be folded into the structure shown in FIG. 8 when the external ambient light is not used.

FIG. 9 is a schematic structural diagram of a seventh embodiment of a display device of the present invention. The two sides of the panel module 720 are respectively provided with a first bump 701 and a second bump 702, wherein the first bump 701 is connected to the backlight module 710 through a first hinge 703, and the first bump The size of 701 is suitable for the panel module 720 and the backlight module 710 to fit together when they are closed. The second protrusion 702 is connected to the light concentrating module 730 through a second hinge 704 , and this structure can also form a quadrilateral when used. It can be folded into the structure shown in FIG. 10 when no ambient light is used.

Because the power consumption of electronic products such as mobile phones and digital cameras is almost all caused by the backlight module, the above display devices make full use of the external ambient light, so the purpose of power saving can be achieved.

Claims (20)

1. display device comprises a module backlight, template die group and an optically focused module, and an end of this module backlight is connected with an end of panel module, and the other end of this panel module is connected with an end of this optically focused module.

2. display device as claimed in claim 1 is characterized in that: this module backlight is connected by one first hinge with this panel module, and this panel module can be around this first hinge through.

3. display device as claimed in claim 2 is characterized in that: this module backlight is parallel with this panel module or be acute angle.

4. display device as claimed in claim 2 is characterized in that: this first hinge is gearing mesh, hold post is connected or the compressed spring type connection with the torsion spring type that holding hole engaging, camshaft and U-shaped spring cooperate.

5. display device as claimed in claim 1 is characterized in that: this panel module is connected by one second hinge with this optically focused module.

6. display device as claimed in claim 5 is characterized in that: this second hinge is gearing mesh, hold post is connected or the compressed spring type connection with the torsion spring type that holding hole engaging, camshaft and U-shaped spring cooperate.

7. display device as claimed in claim 1 is characterized in that: this module backlight comprises a plurality of light sources and a light guide plate, and light source is positioned at light guide plate light entrance face one side.

8. display device according to claim 1, it is characterized in that: this module backlight comprises a plurality of light sources and a light guide plate, light source is positioned at the light guide plate below.

9. as claim 7 or 8 described display device, it is characterized in that: this light source is cathode fluorescent tube or light emitting diode.

10. display device as claimed in claim 1 is characterized in that: this panel module comprises that a panel and is positioned at the Polarizer of this panel below.

11. display device as claimed in claim 1 is characterized in that: this optically focused module comprises that a lens module and is positioned at the diffuser plate of lens module inboard.

12. display device as claimed in claim 11 is characterized in that: this lens module is cylindrical lens or lens arra.

13. display device as claimed in claim 1 is characterized in that: this optically focused module has a bracing or strutting arrangement away from an end of panel module.

14. display device as claimed in claim 1 is characterized in that: this module backlight is connected by a coupling arrangement with an end of this panel module.

15. display device as claimed in claim 14 is characterized in that: be connected by one first hinge between this coupling arrangement and this module backlight, and be connected by one second hinge between this panel module.

16. display device as claimed in claim 14 is characterized in that: the other end of this panel module is provided with one first projection.

17. display device as claimed in claim 16 is characterized in that: this first projection is connected with the optically focused module by one the 3rd hinge.

18. display device as claimed in claim 1 is characterized in that: these panel module two ends are provided with one first projection and one second projection respectively.

19. display device as claimed in claim 18 is characterized in that: this first projection is connected with this module backlight by one first hinge.

20. display device as claimed in claim 18 is characterized in that: this second projection is connected with the optically focused module by one second hinge.

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