CN101071230A - Liquid crystal display device and its backlight module - Google Patents

Abstract

The present invention relates to a liquid crystal display device and a backlight module thereof. The liquid crystal display device comprises a backlight module and a liquid crystal display panel. The backlight module comprises a first light source, a first light emitting cavity, at least one first optical fiber and a first light guide plate. The first light emitting cavity has a first opening, and the first light source is accommodated in the first light emitting cavity. One end of the first optical fiber is connected to the first opening. The first light guide plate is arranged at the other end of the first optical fiber. The liquid crystal display panel is arranged adjacent to one side of the first light guide plate.

Description

Liquid crystal display device and its backlight module

technical field

The invention relates to a backlight module, in particular to a liquid crystal display device and a backlight module thereof

Background technique

With the advancement of electronic technology, especially the prevalence of portable electronic products in daily life, the demand for thin, light, small and low power consumption displays is increasing day by day. Among them, Liquid crystal display (LCD) is often used in various electronic products due to its advantages of low power consumption, low heat generation, light weight, and non-radiation, and has gradually replaced Traditional cathode ray tube display (Cold Cathode Tube Display, CRT Display).

Generally speaking, a liquid crystal display mainly includes a liquid crystal panel (Liquid Crystal Panel) and a backlight module (Backlight Module). Among them, the liquid crystal panel mainly has two substrates and a liquid crystal layer sandwiched between the two substrates; and the backlight module can evenly distribute the light from a light source on the surface of the liquid crystal panel. Traditionally, a backlight module uses a cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCFL) or a light emitting diode (Light Emitting Diode, LED) as a light source.

Please refer to FIG. 1, which is a backlight module 1 of the prior art. Taking an edge type (EdgeType) backlight module 1 as an example, it mainly includes at least one light source 11, a first light guide plate 12, and a reflector. plate 13, and a plurality of optical films 14 (141, 142, 143).

The light source 11 is disposed on one side of the first light guide plate 12 , the light source 11 emits light and enters the first light guide plate 12 . The light source 11 can be at least one light emitting diode or a cold cathode lamp. One side of the first light guide plate 12 has a plurality of printed dots 121 , which can be used to destroy the total reflection of light in the first light guide plate 12 , so that the light is emitted from the light emitting surface 122 of the first light guide plate 12 to the plurality of optical films 14 .

The optical film 14 is disposed on the light emitting surface 122 side of the first light guide plate 12 . Generally, the plurality of optical films 14 may include a lower diffusion sheet 141 , a prism sheet 142 and an upper diffusion sheet 143 . Of course, the quantity, type and arrangement sequence of the optical films 14 can be changed according to the design of each manufacturer. After the light passes through the plurality of optical films 14, a uniform backlight can be provided to the liquid crystal panel.

It can be seen from FIG. 1 that the first light guide plate 12 accounts for about half of the thickness of the backlight module 1. In order to meet the trend that consumers prefer electronic products to be thinner and smaller, manufacturers are actively trying to reduce the thickness of the backlight module 1. thickness of.

Since the thickness of the first light guide plate 12 is related to the size of the light source 11, for example, the diameter of the cold cathode lamp tube and the height of the light-emitting diodes are related to the thickness of the first light guide plate 12, therefore, regardless of whether the light source 11 is a cold cathode lamp tube Or light emitting diodes, the thickness of the first light guide plate 12 always occupies a certain space, and the thicker the thickness of the first light guide plate 12, the higher the cost.

Furthermore, how to smoothly dissipate heat from the light source 11 in the large-sized backlight module 1 becomes another problem. Especially when the light source 11 is a plurality of light-emitting diodes LEDs, the problem of heat generation of each light-emitting diode assembly is a headache for the industry. This is because the position of the light source 11 is quite close to the first light guide plate 12 and the optical film 14 , so the prior art cannot provide an effective heat dissipation means to assist the light source to dissipate heat.

It can be seen that the above-mentioned existing liquid crystal display device and its backlight module obviously still have inconveniences and defects in structure and use, and need to be further improved urgently. In order to solve the problems existing in the existing liquid crystal display devices and their backlight modules, relevant manufacturers have tried their best to find a solution, but for a long time, no suitable design has been developed, and there is no suitable product for general products. The structure can solve the above-mentioned problems, which is obviously a problem that relevant industry players are eager to solve. Therefore, how to create a new type of liquid crystal display device and its backlight module, and solve the problems of the first light guide plate being too thick and the heat dissipation of the light source has become a goal that needs to be improved in the current industry.

In view of the defects in the above-mentioned existing liquid crystal display devices and their backlight modules, the inventors, based on years of rich practical experience and professional knowledge engaged in the design and manufacture of such products, and in conjunction with the application of academic principles, actively research and innovate, with a view to creating A novel liquid crystal display device and its backlight module can improve the general existing liquid crystal display device and its backlight module, making it more practical. Through continuous research, design, and after repeated trial samples and improvements, the present invention with practical value is finally created.

Contents of the invention

The object of the present invention is to overcome the defects existing in the existing liquid crystal display device and its backlight module, and provide a new type of liquid crystal display device and its backlight module. The technical problem to be solved is to reduce the The thickness of the light board and the heat dissipation problem of the light source can be solved, so it is more suitable for practical use.

The purpose of the present invention and the solution to its technical problems are achieved by adopting the following technical solutions. A liquid crystal display device according to the present invention includes: a backlight module, including a first light source, a first light-emitting cavity, at least one first optical fiber, and a first light guide plate, wherein the first light-emitting cavity The body has a first opening, the first light source is accommodated in the first light-emitting cavity, one end of the first optical fiber is connected to the first opening, and the first light guide plate is arranged on the first optical fiber the other end; and a liquid crystal display panel adjacent to one side of the first light guide plate.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned liquid crystal display device, the inner wall of the first light-emitting cavity has a reflective layer.

In the aforementioned liquid crystal display device, the first light-emitting cavity is in the shape of a sphere, an ellipsoid or a cuboid.

In the aforementioned liquid crystal display device, the first light source is at least one cold cathode lamp or at least one light emitting diode.

In the aforementioned liquid crystal display device, the backlight module further includes a heat dissipation seat, and the first light source is disposed on the heat dissipation seat.

In the aforementioned liquid crystal display device, the backlight module further includes a focusing lens disposed adjacent to the first opening.

In the aforementioned liquid crystal display device, wherein the backlight module further includes a second light-emitting cavity and a second light source, the second light-emitting cavity is adjacent to the first light-emitting cavity and has a second opening, The second light source is accommodated in the second light emitting cavity.

In the aforementioned liquid crystal display device, the backlight module further includes at least one second optical fiber, one end of which is disposed on the second opening, and the first light guide plate is disposed on the other end of the second optical fiber.

In the aforementioned liquid crystal display device, wherein the backlight module further includes a fiber frame, the fiber frame has a first through hole, the fiber frame is adjacent to the first light guide plate, and the other end of the first fiber is connected to the first through hole.

The aforementioned liquid crystal display device, wherein the backlight module further includes a fiber frame, the fiber frame has a first through hole and a second hole, the fiber frame is adjacent to the first light guide plate, the second The other end of the optical fiber is disposed in the second through hole.

In the aforementioned liquid crystal display device, the first light guide plate includes a plurality of first connecting parts, and the other end of the first optical fiber is connected to the first connecting parts.

In the aforementioned liquid crystal display device, the first light guide plate includes a plurality of second connecting parts, and the other end of the second optical fiber is connected to the second connecting parts.

The aforementioned liquid crystal display device, wherein the backlight module further includes a second light guide plate and a second optical fiber, one end of the second optical fiber is connected to the first opening, and the second light guide plate is arranged on the second the other end of the fiber.

The aforementioned liquid crystal display device further includes: another liquid crystal display panel, which is adjacent to the second light guide plate.

The purpose of the present invention and the solution to its technical problem also adopt the following technical solutions to achieve. A backlight module according to the present invention includes: a first light source; a first light-emitting cavity having a first opening, and the first light source is accommodated in the first light-emitting cavity; at least one first light-emitting cavity One end of an optical fiber is connected to the first opening; and a first light guide plate is arranged at the other end of the first optical fiber.

The purpose of the present invention and its technical problems can also be further realized by adopting the following technical measures.

In the aforementioned backlight module, the inner wall of the first light-emitting cavity has a reflective layer.

In the aforementioned backlight module, the first light-emitting cavity is in the shape of a sphere, an ellipsoid or a cuboid.

In the aforementioned backlight module, the first light source is at least one cold cathode lamp or at least one light emitting diode.

The aforesaid backlight module further includes: a heat dissipation seat, the first light source is arranged on the heat dissipation seat.

The aforesaid backlight module further includes: a diffusion plate disposed between the first opening and the first light source.

The aforesaid backlight module further includes: a focusing lens disposed adjacent to the first opening.

The aforementioned backlight module further includes: a second light-emitting cavity and a second light source, the second light-emitting cavity is adjacent to the first light-emitting cavity and has a second opening, the second light source is It is accommodated in the second light-emitting cavity.

The aforementioned backlight module further includes: at least one second optical fiber, one end of which is disposed at the second opening, and the first light guide plate is disposed at the other end of the second optical fiber.

The aforementioned backlight module further includes: a fiber holder having a first through hole, the fiber holder is adjacent to the first light guide plate, and the other end of the first optical fiber is connected to the first through hole.

In the aforementioned backlight module, the fiber holder has a second through hole, and the other end of the second optical fiber is disposed in the second through hole.

In the aforementioned backlight module, the first light guide plate includes a plurality of first connecting parts, and the other end of the first optical fiber is connected to the first connecting parts.

In the aforementioned backlight module, the first light guide plate includes a plurality of second connecting parts, and the other end of the second optical fiber is connected to the second connecting parts.

The aforementioned backlight module further includes: a second light guide plate and a second optical fiber, one end of the second optical fiber is connected to the first opening, and the second light guide plate is arranged at the other end of the second optical fiber.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. As can be seen from above technical scheme, main technical content of the present invention is as follows:

In order to achieve the above object, the present invention provides a liquid crystal display device, which includes a backlight module and a liquid crystal display panel. The backlight module includes a first light source, a first light emitting cavity, at least one first optical fiber and a first light guide plate. The first light-emitting cavity has a first opening, and the first light source is accommodated in the first light-emitting cavity. One end of the first optical fiber is connected to the first opening. The first light guide plate is arranged at the other end of the first optical fiber. The liquid crystal display panel is arranged on one side of the backlight module.

In addition, in order to achieve the above object, the present invention further provides a backlight module, which includes a first light source, a first light emitting cavity, at least one first optical fiber and a first light guide plate. The first light-emitting cavity has a first opening, and the first light source is accommodated in the first light-emitting cavity. One end of the first optical fiber is connected to the first opening. The first light guide plate is arranged at the other end of the first optical fiber.

With the above-mentioned technical solution, the liquid crystal display device and its backlight module of the present invention have at least the following advantages: Because the liquid crystal display device and the backlight module of the present invention use optical fibers to transmit the light in the light-emitting cavity to the first light guide plate . Compared with the conventional technology, the liquid crystal display device and the backlight module of the present invention use optical fibers to transmit light, which has the advantage of reducing light loss. In addition, since the optical fiber is used to transmit the light to the first light guide plate, the thickness of the first light guide plate can also be greatly reduced, so the material cost of the first light guide plate can also be reduced. Furthermore, the light source is installed in the light-emitting cavity to extend the light mixing distance, so the requirement for the peak wavelength of a single light source can be relaxed, thereby reducing the cost of purchasing raw materials. In addition, the light source is far away from the optical film, and the heat dissipation of the light source is also a problem. be resolved.

To sum up, the present invention has the above-mentioned many advantages and practical value, and it has great improvement no matter in product structure or function, has significant progress in technology, and has produced easy-to-use and practical effects, and is relatively The existing liquid crystal display device and its backlight module have improved multiple functions, so they are more suitable for practical use, and have wide application value in the industry. It is a novel, progressive and practical new design.

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of a conventional backlight module.

FIG. 2 is a schematic diagram of a liquid crystal display device according to an embodiment of the present invention.

FIG. 3 is another schematic diagram of the liquid crystal display device viewed from the viewing angle in FIG. 2 .

FIG. 4 is a schematic diagram of a backlight module according to a first embodiment of the present invention.

FIG. 5 is another schematic diagram of the backlight module according to the first embodiment of the present invention.

FIG. 6 is another schematic diagram of the backlight module according to the first embodiment of the present invention.

FIG. 7 is another schematic diagram of the backlight module according to the first embodiment of the present invention.

FIG. 8 is a schematic diagram of a backlight module according to a second embodiment of the present invention.

FIG. 9 is another schematic diagram of the backlight module according to the second embodiment of the present invention.

FIG. 10 is another schematic diagram of the backlight module according to the second embodiment of the present invention.

FIG. 11 is another schematic diagram of the backlight module according to the third embodiment of the present invention.

FIG. 12 is another schematic diagram of the liquid crystal display device of the present invention.

1: Backlight module 11: Light source

12: The first light guide plate 121: Printing outlets

122: Light-emitting surface 13: Reflector

14: Optical diaphragm 141: Lower diffuser

142: Prism sheet 143: Upper diffuser sheet

20: Liquid crystal display device 21: The first light guide plate

211: reflective layer 22: first surface

23: Second surface 24: Fitting part

25: dots 30, 30': backlight module

31: First light source 31’: Second light source

32: The first light-emitting cavity 32': The second light-emitting cavity

321: First opening 321': Second opening

322: reflective layer 33: first optical fiber

33': second optical fiber 331: one end

332: The other end 34: The first light guide plate

341: First link 342: Second link

35: Radiation plate 36: Diffusion plate

37: Focusing lens 38: Optical fiber holder

381: First piercing 382: Second piercing

39: Second light guide plate 40, 40’: LCD panel

Detailed ways

In order to further explain the technical means and effects that the present invention adopts to achieve the intended purpose of the invention, below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure, Features and their functions are described in detail below.

Please refer to FIG. 2 and FIG. 3 , wherein FIG. 3 is a schematic view of the liquid crystal display device 20 viewed from the viewing angle in FIG. 2 . The liquid crystal display device 20 includes a backlight module 30 and a liquid crystal display panel 40 (as shown by the dotted line in FIG. 2 ). The liquid crystal display panel 40 mainly has two substrates and a liquid crystal layer sandwiched between the two substrates; the backlight module 30 can evenly distribute light from a light source to the liquid crystal display panel 40 .

Please refer to FIG. 4 , the backlight module 30 of the first embodiment of the present invention includes a first light source 31 , a first light emitting cavity 32 , at least one first optical fiber 33 and a first light guide plate 34 .

The first light source 31 can be a point light source or a line light source, such as a light emitting diode or a fluorescent tube. When the luminous intensity is sufficient, only one first light source 31 can be used, such as a CCFL. In this embodiment, the backlight module 30 is exemplified by having a plurality of first light sources 31, the first light sources 31 can be respectively a light emitting diode assembly (led device) or a light emitting diode bare crystal (die), and can be The light-emitting diode components or bare crystals that emit different colors emit white light with mixed light, and the quantity is not limited. The first light source 31 is disposed on a heat sink 35 , and the heat sink 35 assists the first light source 31 to dissipate heat.

The first light-emitting cavity 32 has a first opening 321 . In addition to the first light source 31 being contained in the first light-emitting cavity 32 , the cooling plate 35 can also be contained in the first light-emitting cavity 32 . The shape of the first light-emitting cavity 32 can be a hollow sphere, ellipsoid, cuboid or other hollow cavity.

In this embodiment, the inner wall of the first light-emitting cavity 32 is provided with a reflective layer 322 for reflecting the light emitted by the first light source 31 to improve light utilization efficiency. Wherein, the material of the reflective layer 322 can be barium sulfate (BaSO ₄ ) or titanium dioxide (TiO ₂ ), which is formed on the inner wall of the first light-emitting cavity 32 by a coating process, so that the reflectivity is greater than 90% (measured at 555 nm) . In addition, the reflective layer 322 may also be formed on the inner wall of the first light-emitting cavity 32 in a sticking manner.

One end 331 of the first optical fiber 33 is connected to the first opening 321 , and the other end 331 is disposed on the first light guide plate 34 . Wherein, the first optical fiber 33 is used to transmit the light in the first light-emitting cavity 32 , and the number of the first optical fiber 33 may vary with actual product design. In Fig. 4, the backlight module 30 has a first optical fiber 33 as an example. Of course, the backlight module 30 may also have a plurality of first optical fibers 33 (as shown in FIG. 5 ), or the first optical fiber 33 represents A bundle of optical fibers. It should be noted that the connection between the first optical fiber 33 and the first opening 321 needs to be quite tight, so as to prevent the light from leaking through the gap between the first opening 321 and the first optical fiber 33 .

Through the connection between the first optical fiber 33 and the first light-emitting cavity 32 and the first light-guiding plate 34, the light emitted by the first light source 31 can pass through the first opening after being reflected in the first light-emitting cavity 32 321 transmits the light to one side of the first light guide plate 34 . The position where the incident light enters the first light guide plate 34 can be determined according to the length and design of the first optical fiber 33. When the first optical fiber 33 is connected to the side of the first light guide plate 34, it becomes a side light type backlight module. Group 30 ; if the first optical fiber 33 is connected to the bottom surface of the first light guide plate 34 , it can become a direct type backlight module 30 . In addition to the advantage that the position where the light enters the first light guide plate 34 can be changed, in this embodiment, since the plurality of first light sources 31 are mixed in the first light-emitting cavity 32, there is a sufficient light mixing distance. The light is transmitted to the first light guide plate 34 by the first optical fiber 33 . Therefore, the light mixing distance between the plurality of first light sources 31 is sufficient, so the backlight module 30 can obtain an ideal light mixing result. After that, white light can be obtained. Moreover, the requirement of the backlight module 30 on the peak wavelength or dominant wavelength when the first light source 31 is a light emitting diode is not too strict. That is to say, when selecting a light emitting diode as a light source, the wavelength specification of the light emitting diode can be relaxed. For example, the light emitting diode with the target peak wavelength of ±3nm can only be selected originally, but because the light mixing distance of the backlight module 30 of the present invention is sufficient, it can be used. Relax the target peak wavelength of the light-emitting diode to ±5nm or more. In this way, the cost of purchasing LED chips can be greatly reduced. Furthermore, since the first optical fiber 33 is used to transmit light to the first light guide plate 34, the thickness of the first light guide plate 34 can also be greatly reduced, and even become as thin as the diameter of the first optical fiber 33. , so the material cost of the first light guide plate 34 can also be reduced.

Please refer to FIG. 5 again, the backlight module 30 may further include a diffusion plate 36 and a focusing lens 37, the diffusion plate 36 is arranged between the first opening 321 and the first light source 31, and the focusing lens 37 is adjacent to the the first opening 321 . Therefore, most of the light emitted by the first light source 31 is first diffused and mixed by the diffuser plate 36 , and then passed through the focusing lens 37 to focus the light on the end 331 of the first optical fiber 33 to facilitate light transmission.

Please refer to FIG. 3 again, the backlight module 30 may further include an optical film group (not shown in the figure), such as a diffusion film and a brightness enhancement film, etc., which are arranged on the first light guide plate 34 and the liquid crystal display panel 40. between, in order to improve light utilization.

Please refer to FIG. 6 for a detailed description of a connection method between the first optical fiber 33 and the first light guide plate 34 . Wherein, the backlight module 30 may further include a fiber frame 38, the fiber frame 38 has a first through hole 381, the fiber frame 38 is adjacent to the first light guide plate 34, and the other end 332 of the first optical fiber 33 is connected to the first light guide plate 34. A perforation 381 .

Please refer to FIG. 7 , which is another way of connecting the first optical fiber 33 and the first light guide plate 34 . Wherein, the first light guide plate 34 includes a plurality of first connecting portions 341 , such as a concave portion or a convex portion. And the other end 332 of the first optical fiber 33 is connected with the first connecting portion 341, and the connecting method can be, for example, bonding, fitting (using the hollow tube body of the optical fiber to fit with the convex portion of the first light guide plate 34), Chimeric or other fixed forms.

Please refer to FIG. 8 to FIG. 10 to illustrate the second embodiment of the backlight module 30' of the present invention.

Please refer to FIG. 8, the backlight module 30' further includes a second light source 31' and a second light emitting cavity 32'. Wherein, the second light emitting cavity 32' is adjacent to the first light emitting cavity 32 and has a second opening 321', and the second light source 31' is accommodated in the second light emitting cavity 32'. The optical fibers extending from the first light-emitting cavity 32 and the second light-emitting cavity 32' are collected into a first optical fiber 33 to transmit light to the first light guide plate 34. Wherein, the second light source 31' may have the same or different emission peak wavelength as that of the first light source 31, so as to emit light of the same or different color. That is to say, the light transmitted from the second light-emitting cavity 32 ′ can be mixed light (for example, white light) or monochromatic light, which is transmitted to the first light guide plate 34 and then combined with The light from the first light-emitting cavity 32 is used for light mixing.

Please refer to FIG. 9, the backlight module 30' can further include a second optical fiber 33', one end of the second optical fiber 33' is set in the second opening 321', and the first light guide plate 34 is set in the second optical fiber 33'. ' on the other end. That is to say, each of the first light-emitting cavity body 32 and the second light-emitting cavity body 32' has an optical fiber to transmit light to the first light guide plate 34.

Please refer to FIG. 10 , the backlight module 30' may further include a fiber holder 38, which has a first through hole 381 and a second through hole 382, and the other end of the second optical fiber 33' is disposed in the second through hole 382. The first light guide plate 34 includes a plurality of second connecting parts 342, and the other end of the second optical fiber 33' is connected to the second connecting parts 342.

Next, referring to FIG. 11 , please describe the third preferred embodiment of the backlight module 30 ″ of the present invention.

Please refer to Fig. 11, the backlight module 30" further includes a second optical fiber 33' and a second light guide plate 39, one end of the second optical fiber 33' is connected to the first opening 321, and the second light guide plate 39 is set at the other end of the second optical fiber 33'.

After the light emitted by the first light source 31 is reflected in the first light-emitting cavity 32, the first optical fiber 33 and the second optical fiber 33' connected to the first opening 321 can transmit the light to the first light guide plate 34 and the first light guide plate 34 respectively The second light guide plate 39 . Wherein, the number of optical fibers connected to the first light guide plate 34 and the second light guide plate 39 and the size of the light guide plate can be determined according to actual needs. Therefore, the number of the first optical fiber 33 and the number of the second optical fiber 33' may be the same or different, and the dimensions of the first light guide plate 34 and the second light guide plate 39 may be the same or different. In this embodiment, since the size of the second light guide plate 39 is small, the number of second optical fibers 33' connected to the second light guide plate 39 is also small.

In this embodiment, the backlight module 30" has a first light guide plate 33 and a second light guide plate 39, so it can be applied to displays with dual display screens, such as mobile phones, dual-screen monitors or notebook computers, etc. .

In addition, please refer to FIG. 12, which is a schematic diagram of applying the backlight module 30" to a liquid crystal display device 20'. In the liquid crystal display device 20' of the present invention, the liquid crystal display panel 40 is adjacent to the first guide The light plate 34, in addition, the liquid crystal display device 20' may further include another liquid crystal display panel 40', which is adjacent to the second light guide plate 39, and the light emitted by the first light source 31 is reflected in the first light emitting cavity 32 After that, the light is transmitted to the first light guide plate 34 and the second light guide plate 39 respectively through the first optical fiber 33 and the second optical fiber 33′, and the first light guide plate 34 and the second light guide plate 39 transmit the light to the liquid crystal display respectively. The panels 40, 40' can form a liquid crystal display device 20' with double-sided display screens.

To sum up, the liquid crystal display device and the backlight module of the present invention transmit the light in the light-emitting cavity to the first light guide plate by using optical fibers. Compared with the conventional technology, the liquid crystal display device and the backlight module of the present invention use optical fibers to transmit light, which has the advantage of reducing light loss. In addition, since the optical fiber is used to transmit the light to the first light guide plate, the thickness of the first light guide plate can also be greatly reduced, so the material cost of the first light guide plate can also be reduced. Furthermore, the light source is installed in the light-emitting cavity to extend the light mixing distance, so the requirement for the peak wavelength of a single light source can be relaxed, thereby reducing the cost of purchasing raw materials. In addition, the light source is far away from the optical film, and the heat dissipation of the light source is also a problem. be resolved.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modify them into equivalent embodiments with equivalent changes, but as long as they do not depart from the technical solution of the present invention, the Technical Essence Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present invention.

Claims (28)

1, a kind of liquid crystal indicator is characterized in that it comprises:

One module backlight, comprise one first light source, one first lighting cavity, at least one first optical fiber and one first light guide plate, wherein, this first lighting cavity is to have one first opening, this first light source is to be placed in this first lighting cavity, one end of this first optical fiber is to be linked to this first opening, and this first light guide plate is the other end that is arranged at this first optical fiber: and

One display panels is a side that is adjacent to this first light guide plate.

2, liquid crystal indicator according to claim 1 is characterized in that wherein the inwall of this first lighting cavity is to have a reflection horizon.

3, liquid crystal indicator according to claim 1 is characterized in that wherein this first lighting cavity is to be spheroid, ellipsoid or rectangular parallelepiped.

4, liquid crystal indicator according to claim 1 is characterized in that wherein this first light source is to be at least one cold cathode fluorescent lamp or at least one light emitting diode.

5, liquid crystal indicator according to claim 1 is characterized in that wherein this module backlight more comprises a radiating seat, and this first light source is to be arranged at this radiating seat.

6, liquid crystal indicator according to claim 1 is characterized in that wherein this module backlight more comprises a condenser lens, is to be adjacent to this first opening.

7, liquid crystal indicator according to claim 1, it is characterized in that wherein this module backlight more comprises one second lighting cavity and a secondary light source, this second lighting cavity is to be adjacent to this first lighting cavity and to have one second opening, and this secondary light source is to be placed in this second lighting cavity.

8, liquid crystal indicator according to claim 7 is characterized in that wherein this module backlight more comprises at least one second optical fiber, and the one end is to be arranged at this second opening, and this first light guide plate is the other end that is arranged at this second optical fiber.

9, liquid crystal indicator according to claim 1, it is characterized in that wherein this module backlight more comprises an optical fibre frame, this optical fibre frame is to have one first perforation, and this optical fibre frame is to be adjacent to this first light guide plate, and the other end of this first optical fiber is to be linked to this first perforation.

10, liquid crystal indicator according to claim 8, it is characterized in that wherein this module backlight more comprises an optical fibre frame, this optical fibre frame is to have one first perforation and one second perforation, and this optical fibre frame is to be adjacent to this first light guide plate, and the other end of this second optical fiber is to be arranged at this second perforation.

11, liquid crystal indicator according to claim 1 is characterized in that wherein this first light guide plate is to comprise plural first linking part, and the other end of this first optical fiber is to link with this first linking part.

12, liquid crystal indicator according to claim 8 is characterized in that wherein this first light guide plate is to comprise plural second linking part, and the other end of this second optical fiber is to link with this second linking part.

13, liquid crystal indicator according to claim 1, it is characterized in that wherein this module backlight more comprises one second light guide plate and one second optical fiber, one end of this second optical fiber is to be linked to first opening, and this second light guide plate is the other end that is arranged at this second optical fiber.

14, liquid crystal indicator according to claim 13 is characterized in that it more comprises:

One another display panels is to be adjacent to this second light guide plate.

15, a kind of module backlight is characterized in that it comprises:

One first light source:

One first lighting cavity is to have one first opening, and this first light source is to be placed in this first lighting cavity;

At least one first optical fiber, one end are to be linked to this first opening; And

One first light guide plate is the other end that is arranged at this first optical fiber.

16, module backlight according to claim 15 is characterized in that wherein the inwall of this first lighting cavity is to have a reflection horizon.

17, module backlight according to claim 15 is characterized in that wherein this first lighting cavity is to be spheroid, ellipsoid or rectangular parallelepiped.

18, module backlight according to claim 15 is characterized in that wherein this first light source is to be at least one cold cathode fluorescent lamp or at least one light emitting diode.

19, module backlight according to claim 15 is characterized in that it more comprises:

One radiating seat, this first light source is to be arranged at this radiating seat.

20, module backlight according to claim 15 is characterized in that it more comprises:

One diffuser plate is to be arranged between this first opening and this first light source.

21, module backlight according to claim 15 is characterized in that it more comprises:

One condenser lens is to be adjacent to this first opening.

22, module backlight according to claim 15 is characterized in that it more comprises:

One second lighting cavity and a secondary light source, this second lighting cavity are to be adjacent to this first lighting cavity and to have one second opening, and this secondary light source is to be placed in this second lighting cavity.

23, module backlight according to claim 22 is characterized in that it more comprises:

At least one second optical fiber, one end are to be arranged at this second opening, and this first light guide plate is the other end that is arranged at this second optical fiber.

24, module backlight according to claim 15 is characterized in that it more comprises:

One optical fibre frame is to have one first perforation, and this optical fibre frame is to be adjacent to this first light guide plate, and the other end of this first optical fiber is to be linked to this first perforation.

25, module backlight according to claim 23 is characterized in that wherein this optical fibre frame is to have one second perforation, and the other end of this second optical fiber is to be arranged at this second perforation.

26, module backlight according to claim 15 is characterized in that wherein this first light guide plate is to comprise plural first linking part, and the other end of this first optical fiber is to link with this first linking part.

27, module backlight according to claim 23 is characterized in that wherein this first light guide plate is to comprise a plurality of second linking parts, and the other end of this second optical fiber is to link with this second linking part.

28, module backlight according to claim 15 is characterized in that it more comprises:

One second light guide plate and one second optical fiber, an end of this second optical fiber are to be linked to first opening, and this second light guide plate is the other end that is arranged at this second optical fiber.

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