CN205101908U - A thin light emitting module - Google Patents

Abstract

The embodiment of the utility model discloses slim light emitting module for solve current backlight unit and need FPC as the light source module of support plate, make backlight unit's the number of piles and the problem of thickness increase. The embodiment of the utility model provides an in slim light-emitting module, backlight module includes: a light directing film comprising a first side and a second side; a thin film sheet disposed on the first side or the second side; a conductive layer formed on a part of a surface of the thin film sheet and conducting power; the light emitting units are configured on the conductive layer and electrically connected with the conductive layer, receive the electric power and emit light rays, and the light rays are incident to the light guide film through the configuration.

Description

A thin light emitting module

technical field

The utility model relates to the technical field of mobile devices, in particular to a thin light-emitting module.

Background technique

With the advancement of technology, all kinds of portable electronic devices, wearable devices, etc., need to have basic light-emitting functions for indication, lighting, light-emitting and other purposes, because the backlight module (BackLightModule, BLM) Surface light source and other advantages, so BLM began to be widely and widely used as a light source on various electronic devices, especially various mobile devices that include backlight modules, such as: notebook computers, mobile phones, smart phones, tablet computers , tablet phone, keyboard cover, touch cover, keyboard back cover, touch back cover and backlit keyboard, etc.

Figure 1a shows a schematic side view of a commonly used thin light-emitting module. The thin light-emitting module 1 includes a backlight module 10 and an input module 19. The backlight module 10 also includes a light guide plate 11, a light source module 12, a light-shielding film 13, and a reflector 14. components, the light source module 12 also includes a flexible circuit board (FPC) 15 and a light emitting diode (LED) 16, and a black light shielding layer 17 or a white reflective layer 18 is coated on the light shielding film 13, and the light source emitted by the light emitting diode 16 enters After the light guide plate 11 , it is guided, diffused and mixed by the light guide plate 11 , and then reflected by the reflective sheet 14 , and finally emits light from the light emitting surface S to form a surface light source L to provide illumination for the input module 19 .

Figure 1b shows a schematic top view of a commonly used light source module. The light source module 12 includes a flexible circuit substrate 15 and a plurality of light-emitting diodes 16 arranged on the flexible circuit substrate 15. There are multiple conductive circuits 21 on the flexible circuit substrate 15. , the conductive circuit 21 receives power from the power input terminal 22 and transmits it to the plurality of LEDs 16 to drive the LEDs 16 to emit light.

But if you look at the backlight module, the commonly used backlight module is composed of four main layers, from top to bottom: light-shielding film, light guide plate, reflector and light source module. The light source module uses FPC as the carrier board. It is produced by standard FPC process, using SMT technology (surface mount technology) to stick multiple LEDs on the FPC, but because the cost of FPC is relatively high, usually in order to effectively reduce the cost, the commonly used standard optical design will use the required The LEDs are concentrated together as much as possible to reduce the area of the FPC, that is, it is hoped to use a smaller piece of FPC as much as possible to save the material cost of the FPC.

The above-mentioned backlight module requires FPC as the light source module of the carrier board, which increases the number of layers and thickness of the backlight module and reduces the design flexibility of the LED ornament.

Utility model content

The utility model proposes a new structure related to the thin light-emitting module. On the one hand, it proposes to change the light source module (FPCwithLEDs) in the backlight module to be all configured on the light-shielding sheet or reflective sheet, so the FPC can be completely omitted in the backlight module. Use, on the other hand, through ingenious mechanism design, part of the film structure in the input module is used as the light-shielding layer in the backlight module, so the use of the light-shielding sheet in the backlight module can also be omitted.

Under the design of the present invention, in addition to effectively reducing the number of layers and thickness of the backlight module in the thin light-emitting module, it can not only improve the overall luminous efficiency and luminous uniformity of the backlight module, but also simplify its manufacturing process. Further reduce the production cost; therefore, compared with the commonly used thin light-emitting modules, the thin light-emitting module of the present invention has thinner device thickness, better luminous efficiency and uniformity of light, cheaper manufacturing and production costs, and a more simplified assembly process.

A thin light-emitting module provided by an embodiment of the present invention includes a combination of a backlight module and an input module or a combination of a backlight module and a display module. The backlight module includes:

a light directing film comprising a first side and a second side;

a film sheet disposed on the first side or the second side;

a conductive layer formed on a portion of the surface of the thin film sheet and conducting electricity;

More than two light-emitting units are arranged on the conductive layer and electrically connected with the conductive layer, the light-emitting units receive the electric power and emit light, and the light is incident on the light-guiding film through configuration.

Optionally, the light guide film has more than two through holes, and the light emitting unit is placed in the through holes.

Optionally, there are two thin film sheets, one thin film sheet is a reflective sheet, and the other thin film sheet is a light-shielding sheet;

The reflective sheet and the shading sheet are respectively arranged on the first side and the second side of the light guide film;

The reflection sheet is located on the lower side of the shading sheet, and an input module is arranged on the upper side of the shading sheet.

Optionally, the shading sheet is provided with more than two openings serving as light-transmitting regions;

The distribution of the openings on the light-shielding sheet matches the layout of the light-transmitting area required by the mobile device.

Optionally, the conductive layer is an electrical wire disposed between the reflective sheet and the light-shielding sheet.

Optionally, a light-shielding layer or a reflective layer is arranged at a corresponding position above the conductive layer;

Alternatively, a light-shielding layer and a reflective layer are arranged at corresponding positions above the conductive layer.

Optionally, the input module includes an input unit and a conductive film;

The input unit is used to receive user input;

The conductive film includes a flexible film substrate, and a circuit layer formed on the flexible film substrate;

The input unit is electrically connected to the circuit layer.

Optionally, the conductive film replaces the light-shielding sheet.

Optionally, there are two conductive films, namely a first conductive film and a second conductive film;

The first conductive film is disposed on the second conductive film, and an insulating layer is disposed between them.

Optionally, a metal frame is provided on the surface of one side of the light guide film.

Optionally, the distribution of the conductive layer on the film sheet matches the layout of the backlight module on the mobile device.

As can be seen from the above technical solutions, the utility model embodiment has the following advantages:

A thin light-emitting module in the embodiment of the utility model cancels the FPC as the light source module of the carrier board, reduces the number of layers and thickness of the backlight module, improves the design flexibility of the LED ornament, can greatly improve the overall optical efficiency, and has the opportunity Using fewer LEDs in the backlight module can reduce cost and power consumption of the module.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Figure 1a discloses a schematic diagram of a side-view structure of a commonly used backlight module;

FIG. 1b discloses a schematic top view of a commonly used light source module;

Fig. 2a is a schematic diagram showing the side view structure of the first embodiment of the thin light-emitting module of the present invention;

Fig. 2b is a schematic diagram showing a film sheet with a conductive layer in the present invention;

Fig. 2c shows the schematic diagram of the thin film sheet with conductive layer in the utility model;

Fig. 3 is a schematic diagram showing the side view structure of the second embodiment of the thin light-emitting module of the present invention;

Fig. 4 is a side-view structure diagram showing the third embodiment of the thin light-emitting module of the present invention;

Fig. 5 is a side-view structure diagram showing the fourth embodiment of the thin light-emitting module of the present invention;

Fig. 6 is a side view structural schematic diagram showing the fifth embodiment of the thin light-emitting module of the present invention;

Fig. 7 is a side view structural schematic diagram showing the sixth embodiment of the thin light-emitting module of the present invention;

Fig. 8 is a side-view structure diagram showing the seventh embodiment of the thin light-emitting module of the present invention;

Fig. 9 is a side-view structure diagram showing the eighth embodiment of the thin light-emitting module of the present invention;

Fig. 10 is a side view structural schematic diagram showing the ninth embodiment of the thin light-emitting module of the present invention;

Fig. 11 is a side-view structural schematic diagram showing the tenth embodiment of the thin light-emitting module of the present invention;

Fig. 12 is a schematic side view showing the eleventh embodiment of the thin light-emitting module of the present invention;

Fig. 13a is a schematic diagram showing the top view structure of the light guide film in the present invention;

Fig. 13b is a schematic diagram showing a top view structure of a commonly used light guide film.

Graphical description:

1 thin light emitting module

10 backlight module

11 light guide plate

12 light source modules

13 Shading film

14 reflectors

15 flexible circuit substrate

16 lighting units

17 Black shading layer

18 white reflective layer

19 input modules

21 conductive lines

22 power input

L surface light source

S light surface

B Bottom

100 thin light emitting modules

200 backlight modules

300 input modules

102 light guide film

1021 first surface

1022 second surface

1023 through holes

103 reflective sheet

104 shading film

106 film sheet

1061 upper surface

1062 lower surface

1063 openings

1064 transparent areas

1065 opaque area

107 conductive film (first conductive film)

108 lighting units

109 input units

1091 Scissor foot button structure

1092 shrapnel button structure

110 conductive layer

112 power input terminal

114 black shading layer

116 white reflective layer

118 metal frame

121 first conductive film

1211 film opening

122 insulating layer

123 second conductive film

400 light guide film

410 film body

420 reflective coating

500 commonly used light guide film

510 film body

520 reflective coating

detailed description

The utility model will be fully understood by the following examples, so that those skilled in the art can complete it, but the implementation of the utility model can not be limited to its implementation form by the following examples of implementation; the utility model The drawings do not contain limitations on the size, size and scale, and the size, size and scale of the utility model cannot be limited by the drawings of the utility model during actual implementation.

The word "preferred" in this article is non-exclusive and should be understood as "preferably but not limited to". order, the scope of the present utility model should only be determined by the appended claims and their equivalents, and not by the examples of implementation examples; when the term "comprising" and its changes appear in the specification and claims, is an open-ended term that does not have a restrictive meaning and does not exclude other features or steps.

The shading sheet described in the embodiment of the utility model of this institute is also called a shading plate, a shading film, a shading layer, and a shading film in the technical field; the light guide film described in the utility model is in the technical field Also known as light guide plate, light guide sheet, light guide layer, and light guide film; the reflective sheet described in this utility model is also called reflective plate, reflective film, reflective layer, and reflective film in the technical field.

Please refer to Fig. 2a and Fig. 2b of the present utility model together. Fig. 2a discloses a side view structure schematic diagram of the first embodiment of the thin light-emitting module of the present utility model, Fig. 2b discloses a schematic diagram of a film sheet with a conductive layer of the present utility model, and Fig. 2c reveals The utility model has a schematic diagram of a thin film sheet with a conductive layer; the thin light-emitting module 100 includes a backlight module 200 and an input module 300 arranged above the backlight module 200, and the surface of the backlight module 200 facing the direction of the input module 300 is the light-emitting surface S. The bottom surface B is the lowest outer surface in the S direction of the light-emitting surface.

The backlight module 200 includes components such as a light guide film 102, a reflection sheet 103, a film sheet 106, and a light emitting unit 108, as well as a light-emitting surface S and a bottom surface B for providing an illumination source for the input module, based on the position of the light guide film 102 , a first side on the same side as the light-emitting surface S and a second side on the same side as the bottom surface B can be defined on the light guide film 102, the light guide film 102 has a first surface 1021 located in the direction of the first side, and The second surface 1022 opposite to the first surface 1021 and located in the second side direction, that is, the first surface 1021 is the surface on the light guide film 102 facing the light-emitting surface S and the first side direction, and the second surface 1022 is the light guide film. The reflection sheet 103 is disposed on the second surface 1022 of the light guide film 102 , that is, on the second side direction.

The film sheet 106 is arranged on the first side direction of the light guide film 102. The film sheet 106 has two main surfaces, one of which is facing the light output surface S and the upper surface 1061 of the input module, and the other is facing the bottom surface B and the guide surface. The lower surface 1062 of the light film 102 is formed with a layer of conductive layer 110 on a part of the lower surface 1062, and a plurality of light-emitting units 108 are arranged on the conductive layer 110. The light-emitting units 108 are preferably light-emitting diodes (LEDs). It is disposed on the conductive layer 110 through surface mount technology (SMT), and is electrically connected to the conductive layer 110 .

The film sheet 106 is made of opaque, transparent or semi-transparent materials, such as: polyester (PET) film, polyethylene (PE) film, Mylar polyester film, Melinex polyester film, Teijin polyester film, Tetoron polyester film, Mylar light-transmitting film, Mylar light-proof film, light-transmitting film, light-proof film, black and white film and the film substrate made of one of them, and then printed or sprayed on the film A light-shielding layer or a light-reflecting layer is formed on the upper surface 1061 or the lower surface 1062 of the sheet 106, so that the film sheet 106 has the functions of light-shielding and light-reflecting.

In this embodiment, the Mylar opaque film is selected as the film sheet 106, and the film sheet 106 is mainly used as a light-shielding sheet in the backlight module, or the light-shielding sheet in the backlight module 200 is used as the film sheet 106, so it is used as a light-shielding sheet. On the film body of the film sheet 106 of the sheet, a plurality of openings 1063 are opened in advance in a die-cutting manner to allow light to penetrate to form a light-transmitting area 1064, and the film body part without openings forms a light-impermeable area 1065. Assuming that when the input module is a keyboard At this time, the backlight module 200 is used as the backlight of the keyboard module, so looking down on the film sheet 106 from the lower surface 1062, it will be found that a plurality of openings 1063 as the light-transmitting area 1064 will be arranged in a specific pattern according to a predetermined design, for example: QWERT keyboard arrangement The specific pattern is disclosed in Figure 2b.

It is worth noting that the opening 1063 on the thin film 106 can be further opened in the peripheral area of the thin film 106 near the edge, and the conductive layer 110 and the light emitting unit 108 are respectively wired and arranged in the peripheral area, as shown in FIG. 2c. Then it can make the periphery of the thin keyboard also produce a luminous effect, just like the most popular gaming keyboard.

The conductive layer 110 is made by, for example, printing, evaporating deposition, sputtering deposition, physical vapor deposition (PVD), chemical vapor deposition (CVD), roll-to-roll process (roll-to-roll) , spray method (aerosolspraying), sol-gel method (sol-gel), dip coating method (dipcoating), spin coating method (spincoating), inkjet (inkjet) or ultraviolet light curing (UVcuring) Substances, such as: gold, silver (paint, paste, glue), copper (paste, glue, foil), carbon paste, aluminum paste, ITO conductive ink, etc., are formed on a part of the surface of the film sheet 106 as a material for conducting electricity. Electrical lead; the conductive layer 110 is electrically connected to the power input terminal 112, and receives the power provided by the power input terminal 112, and then conducts it to the light emitting unit 108 to drive the light emitting unit 108 to generate an illumination source.

The light-emitting unit 108 arranged on the film sheet 106 is finally assembled and aligned and put into the through hole 1023 on the light guide film 102. The film body of the light guide film 102 has been punched in advance to open a plurality of through holes. 1023, for accommodating the light-emitting unit 108, a plurality of light-emitting units 108 provide incident light to the light-guiding film 102 from the side of the light-guiding film 102, the incident light is guided, diffused and mixed by the light-guiding film 102, and then passes through the reflective sheet 103 After reflection, the light is finally emitted from the light-emitting surface S to form a surface light source, which provides illumination for the input module.

Fig. 3 reveals the side-view structure schematic diagram of the second embodiment of the thin light-emitting module of the present invention; the second embodiment includes all the features described in the first embodiment, and the thin light-emitting module includes a backlight module 200 and an Input module (not shown in the figure); Finally, in order to prevent the conductive layer 110 from affecting the light-shielding or light-reflecting effect of the film sheet 106 , a black light-shielding layer 114 or a white light-reflecting layer 116 is selectively formed on the conductive layer 110 of the film sheet 106 .

Fig. 4 reveals the side-view structure diagram of the third embodiment of the thin light-emitting module of the present invention; the third embodiment includes all the features described in the second embodiment, and the thin light-emitting module includes a backlight module 200 and a backlight module 200. The input module (not shown in the figure); the backlight module 200 includes components such as light guide film 102, light-shielding sheet 104, film sheet 106, light-emitting unit 108, and includes a light output surface S and a bottom surface B for providing an illumination source for the input module , taking the position of the light guide film 102 as a reference, the first side on the same side as the light-emitting surface S and the second side on the same side as the bottom surface B can be defined on the light guide film 102, and the light guide film 102 has a The first surface 1021 on the side direction, and the second surface 1022 located on the second side direction relative to the first surface 1021, the light shielding sheet 104 is arranged on the direction toward the first side on the light guide film 102, that is towards the direction of the light-emitting surface S.

The film sheet 106 is arranged on the second side direction of the light guide film 102, and in this embodiment is arranged near the second surface 1022 or on the second surface 1022. The film sheet 106 has two main surfaces, one of which is The upper surface 1061 facing the light-emitting surface S and the light guide film 102, and the other is the lower surface 1062 facing the bottom surface B. On a part of the surface of the upper surface 1061, a layer of conductive layer 110 is formed, and a plurality of light-emitting units 108 are arranged on On the conductive layer 110 , the light emitting unit 108 is preferably a light emitting diode (LED), which is disposed on the conductive layer 110 through surface mount technology (SMT) and electrically connected to the conductive layer 110 .

In this embodiment, the film sheet 106 is mainly used as a reflector in the backlight module, or the reflector in the backlight module 200 is used as the film sheet 106, and the light emitting unit 108 arranged on the film sheet 106 is finally assembled and aligned. Put it into the through hole 1023 on the light guide film 102. The film body of the light guide film 102 has been punched in advance to open a plurality of through holes 1023 for accommodating the light emitting unit 108. The side of the light film 102 provides incident light to the light guide film 102. The incident light is guided, diffused and mixed by the light guide film 102, and then reflected by the thin film sheet 106 as a reflector, and finally emerges from the light exit surface S to form Surface light source to provide illumination for other external institutions. The eighth embodiment includes all the features described in the first embodiment.

Fig. 5 reveals the side-view structural diagram of the fourth embodiment of the thin light-emitting module of the present invention; the fourth embodiment includes all the features described in the third embodiment, the thin light-emitting module 100 includes a backlight module 200, and is arranged above the backlight module 200 The input module 300; the backlight module 200 includes components such as the light guide film 102, the light shielding sheet 104, the film sheet 106, the light emitting unit 108, but in this embodiment, since the conductive layer 110 is formed on the film sheet 106, in order to avoid conduction The layer 110 affects the light-shielding or light-reflecting effect of the light-shielding sheet 104 , so a black light-shielding layer 114 or a white light-reflecting layer 116 is selectively formed on the light-shielding sheet 104 at a position corresponding to the conductive layer 110 .

It is worth noting that the black light-shielding layer 114 or the white reflective layer 116 coated on the light-shielding sheet 104 is optional, and its position may not correspond to the position of the conductive layer 110. The black light-shielding layer 114 or the white reflective layer 116 can be It is coated according to design requirements, or the light-shielding sheet 104 may not be coated with the black light-shielding layer 114 or the white light-shielding layer 116 , or be coated with one of the black light-shielding layer 114 and the white light-shielding layer 116 .

Figure 6 shows a side view structural diagram of the fifth embodiment of the thin light-emitting module of the present invention; the thin light-emitting module 100 includes components such as a light guide film 102, a reflector 103, a thin film 106, a light-emitting unit 108, and an input unit 109, and the input unit 109 It can be a scissors-type key structure 1091 or a shrapnel-type key structure 1092 . The surface of the film sheet 106 facing the light-emitting surface S is the upper surface 1061 , and the surface facing the bottom surface B is the lower surface 1062 .

In this embodiment, the conductive film (the first conductive film) in the input module 300 is used as the film sheet 106, or the film sheet 106 is the conductive film in the input module 300, and the conductive film is made of a flexible film substrate and formed here. A circuit layer on the substrate is formed as the conductive circuit of the input unit 109. In the commonly used technology, the circuit layer as the conductive circuit of the input unit 109 is preferably made on the upper surface 1061, and on the lower surface 1062. No other structure is formed in the blank, but in this embodiment, the blank lower surface 1062 is further used to form the conductive layer 110 as the electrical wire for conducting electricity to the light emitting unit 108 on the lower surface 1062 .

However, it is worth noting that assuming that the thin light-emitting module 100 can be preferably divided into two modules, that is, the backlight module 200 and the input module 300, the backlight module 200 includes a light guide film 102, a reflector 103, a light-emitting unit 108, etc., and the input module 300 Including the thin film sheet 106 and the input unit 109, the conductive layer 110 is formed on the lower surface 1062 of the thin film sheet 106, so it is assumed that, compared with the commonly used backlight module, the backlight module 200 of the present invention is not configured with a light-shielding sheet or It is necessary to use a light-shielding sheet because the conductive film in the input module 300, that is, the film sheet 106, already has a light-shielding effect. Therefore, compared with the commonly used backlight module, the structure of the backlight module 200 in this embodiment is simpler.

Fig. 7 reveals the side view structural diagram of the sixth embodiment of the thin light-emitting module of the present invention; the sixth embodiment includes all the features described in the fifth embodiment, and the thin light-emitting module 100 includes a light guide film 102, a film sheet 106, and a conductive film Components such as (the first conductive film) 107, the light emitting unit 108 and the input unit 109, in the present embodiment, utilize the reflection sheet in the backlight module 200 as the film sheet 106, or the film sheet 106 is the reflection sheet in the backlight module 200 .

The film sheet 106 has two main surfaces, one of which is the upper surface 1061 facing the light-emitting surface S and the light guide film 102, and the other is the lower surface 1062 facing the bottom surface B. On part of the upper surface 1061, a layer of conductive film is formed. Layer 110, and a plurality of light-emitting units 108 are arranged on the conductive layer 110, the light-emitting unit 108 is preferably a light-emitting diode (LED), which is arranged on the conductive layer 110 through surface mount technology (SMT), and is connected to the conductive layer 110 electrical connection.

Figure 8 reveals a schematic side view of the seventh embodiment of the thin light-emitting module of the present invention; the seventh embodiment includes all the features described in the sixth embodiment, and the thin light-emitting module 100 includes a light guide film 102, a reflective sheet 103, and a film sheet 106. Components such as the light emitting unit 108 and the input unit 109, but in this embodiment, the input module 300 includes two conductive films, which are respectively the film sheet 106 (the first conductive film) and the second conductive film 123, and the film sheet 106 The insulating layer 122 is used for isolation from the second conductive film 123 , and the conductive layer 110 is formed on the bottom surface B of the film sheet 106 and the lower surface 1062 of the light guide film 102 .

In this embodiment, the first conductive film in the input module 300 is utilized as the film sheet 106, or the film sheet 106 is the first conductive film in the input module 300, in order to prevent the conductive layer 110 from affecting the shading of the film sheet 106 or Reflective effect, therefore, a black light-shielding layer 114 or a white light-reflecting layer 116 is selectively formed on the film sheet 106 at the position corresponding to the conductive layer 110 .

Figure 9 reveals a schematic side view of the eighth embodiment of the thin light-emitting module of the present invention; the eighth embodiment includes all the features described in the seventh embodiment, and the thin light-emitting module 100 includes a light guide film 102, a reflective sheet 103, and a film sheet 106, the second conductive film 123, the light emitting unit 108 and the input unit 109 and other components, but in this embodiment, since the utility model has combined the backlight module 200 and the input module 300 into the same unit, in order to make the backlight module 200 and the input The module 300 provides better supporting force, selectively on the first surface 1021 of the light guide film 102, under the film sheet 106, a metal frame 118 is set, and the whole of the backlight module 200 and the input module 300 is strengthened through the metal frame 118 Structural strength. On the other hand, in this embodiment, only the white reflective layer 116 is selectively formed on the conductive layer 110 of the film sheet 106 , and the black light shielding layer 114 is selectively formed on the second conductive film 123 .

Figure 10 discloses a side view structural diagram of the ninth embodiment of the thin light-emitting module of the present invention; the ninth embodiment includes all the features described in the eighth embodiment, and the thin light-emitting module 100 includes a light guide film 102, a reflective sheet 103, a first Components such as conductive film 121, film sheet 106 (the second conductive film), light emitting unit 108 and input unit 109, in the present embodiment, conductive layer 110 is to be formed on the film sheet 106, on the film body of the first conductive film 121 A plurality of film openings 1211 are opened in advance by punching, for the light-emitting unit 108 to pass through, so that the light-emitting unit 108 can be assembled into the through hole 1023 on the light guide film 102 . A black light-shielding layer 114 is selectively formed on the upper surface 1061 of the film sheet 106 .

Figure 11 reveals the side view structural diagram of the tenth embodiment of the thin light-emitting module of the present invention; the tenth embodiment includes all the features described in the ninth embodiment, and the thin light-emitting module 100 includes a light guide film 102, a reflector 103, a first Conductive film 121, film sheet 106 (second conductive film), light emitting unit 108, input unit 109 and other components, but in this embodiment, in order to provide better support for the backlight module 200 and input module 300, optional On the first surface 1021 of the light guide film 102 , under the first conductive film 121 , a metal frame 118 is disposed, through which the overall structural strength of the backlight module 200 and the input module 300 is strengthened.

Figure 12 discloses a side view structural schematic diagram of the eleventh embodiment of the thin light-emitting module of the present invention; the eleventh embodiment includes all the features described in the tenth embodiment, and the thin light-emitting module 100 includes a light guide film 102, a film sheet 106, Components such as the first conductive film 121, the second conductive film 123, the insulating layer 122, and the light emitting unit 108, in this embodiment, the film sheet 106 is mainly used as a reflection sheet in the backlight module 200, or the The reflective sheet is used as the thin film sheet 106, the conductive layer 110 is formed on the upper surface 1061 of the thin film sheet 106, and the light-emitting unit 108 arranged on the upper surface 1061 conductive layer 110 is finally assembled and aligned on the light-transmitting unit placed on the light guide film 102. In the hole 1023, a black light-shielding layer 114 or a white light-reflecting layer 116 is selectively formed on the first conductive film 121 for light-shielding or light-reflecting purposes respectively, and a black light-shielding layer is also selectively formed on the second conductive film 123. 114.

Fig. 13a discloses a schematic diagram of the top view structure of the light guide film of the present invention; Fig. 13b discloses a schematic diagram of the top view structure of a commonly used light guide film; since the utility model allows the light-emitting unit to be arranged at any position in the backlight module, including being arranged near In the surrounding area of the backlight module, the area of the reflective layer originally formed on the light guide film in the commonly used technology can be greatly reduced.

In the commonly used technology, since the light-emitting units are usually concentrated in the center of the backlight module, a large-area reflective layer is arranged near the edge of the light guide film to try to compensate for the insufficient brightness of the backlight module at the edge; Figure 13a It discloses the light guide film 400 of the present invention provided in the backlight module of the present invention, which includes a film body 410 and a reflective coating 420. Figure 13b discloses the commonly used light guide film 500 provided in the backlight module of the present invention. Including the film body 510 and the reflective coating 520, comparing the reflective coating 420 in Figure 13a with the reflective coating 520 in Figure 13b, it is obvious that the reflective coating 420 of the present invention has a smaller total Reflective area.

Hereby further provide more embodiments of the present utility model as follows:

Embodiment 1: A thin light-emitting module, comprising: a light guide film, which includes a first side and a second side; a thin film, which is arranged on one of the first side and the second side; a A conductive layer, which is formed on a part of the surface of the film sheet and conducts an electric power; and a plurality of light-emitting units, which are arranged on the conductive layer and electrically connected with the conductive layer, and each light-emitting unit receives the light provided by the conductive layer. Electric power is used to emit a light source configured to be incident on the light guide film.

Embodiment 2: The thin light-emitting module as described in Embodiment 1, further comprising one of the following components: a backlight module comprising: the light guide film comprising the first side and the second side, and has a direction A first surface of the first side, a second surface opposite to the first surface and facing the second side, and a plurality of through holes for accommodating the light-emitting units; a light-shielding sheet, which is arranged on the first One of the side and the second side; and a reflective sheet, which is arranged on the other side relative to the light-shielding sheet; and an input module, which includes: an input unit, which is used to accept an input from a user ; and a conductive film, which includes a flexible film substrate and a circuit layer formed on the flexible film substrate, the input unit is electrically connected to the circuit layer.

Embodiment 3: The thin light-emitting module as described in Embodiment 2, the thin film is the light-shielding sheet and is arranged on the first side, and the thin light-emitting module further includes one of the following components: the thin film has an upper The surface, the lower surface, a plurality of openings as the light-transmitting area, and a film body as the opaque area, the conductive layer is arranged on one of the upper surface and the lower surface of the film body, as a means for conducting electricity electric wire; the reflection sheet, which is arranged on the second surface of the light guide film; a metal frame, which is arranged on the first surface of the light guide film; and a power input terminal, which is arranged on the film sheet And electrically connected with the conductive layer to provide the electric power to the conductive layer.

Embodiment 4: In the thin light-emitting module as described in Embodiment 2, one of a light-shielding layer and a reflective layer is formed on the conductive layer; One of a light-shielding layer and a reflective layer is formed on the surface corresponding to the position of the conductive layer.

Embodiment 5: The thin light-emitting module as described in Embodiment 2, the film sheet is the reflective sheet and is arranged on the second side, and the thin light-emitting module further includes one of the following components: the film sheet has an upper The surface and the lower surface, the conductive layer is arranged on one of the upper surface and the lower surface of the film body, as an electric wire for conducting electric power; the shading sheet is arranged on the first surface of the light guide film side; and a metal frame, which is arranged on the first surface of the light guide film; and a power input terminal, which is arranged on the thin film and electrically connected with the conductive layer, so as to provide the electric power to the conductive layer .

Embodiment 6: In the thin light-emitting module as described in Embodiment 2, the input unit is one of a scissors-type key structure and a shrapnel-type key structure.

Embodiment 7: The thin light-emitting module as described in Embodiment 1, further comprising one of the following components: a backlight module comprising: the light guide film comprising the first side and the second side, and has a direction A first surface of the first side, a second surface opposite to the first surface and facing the second side, and a plurality of through holes for accommodating the light emitting units; and a reflective sheet, which is arranged on the second side One side and one of the second side; and an input module, which includes: an input unit, which is used to accept an input from a user; a first conductive film, which includes a first flexible film substrate and A first circuit layer formed on the flexible film substrate, the input unit is electrically connected to the first circuit layer; and a second conductive film, which includes a second flexible film substrate and formed on the flexible A second circuit layer on the film substrate, the input unit is electrically connected with the second circuit layer.

Embodiment 8: The thin light-emitting module as described in Embodiment 7, wherein the film sheet is one of the first conductive film and the second conductive film, and includes a plurality of openings as light-transmitting regions and opaque regions A film body is used as a light-shielding sheet at the same time. The thin light-emitting module also includes one of the following components: the film sheet has an upper surface and a lower surface, and the conductive layer is arranged on the upper surface and the lower surface of the film body. One of the lower surfaces is used as an electric wire for conducting electricity; a metal frame is arranged on the first surface of the light guide film; and a power input terminal is arranged on the thin film and connected to the conductive The layers are electrically connected to provide the electrical power to the conductive layer.

Embodiment 9: The thin light-emitting module as described in embodiment 7, wherein the film sheet is the reflection sheet, and the thin light-emitting module further includes one of the following components: the film sheet has an upper surface and a lower surface, the The conductive layer is arranged on one of the upper surface and the lower surface of the film body as an electric wire for conducting electric power; a metal frame is arranged on the first surface of the light guiding film; and an electric power The input end is arranged on the thin film and electrically connected with the conductive layer to provide the electric power to the conductive layer.

Embodiment 10: In the thin light-emitting module as described in Embodiment 7, a plurality of insulating layers are arranged between the first conductive film and the second conductive film.

Therefore, in summary, the utility model mainly proposes an innovative structure for the backlight module. On any surface of the light-shielding film or the reflector, a layer of conductive lines is arranged with metal or conductive materials, and then the light-emitting diode ( LED) is arranged on this layer of circuit, it can be directly in the backlight module, omitting the use of the light source module, or directly replacing the commonly used light source module, which can reduce the number of layers, thickness and manufacturing cost of the backlight module, and its advantages are as follows:

(1) Effectively reduce the number of layers, thickness and weight of the backlight module.

(2) Make the overall input device lighter and thinner with less cost.

(3) Improving the design flexibility of LED ornaments can greatly improve the overall optical efficiency.

(4) There is an opportunity to use a smaller number of LEDs, which can reduce costs and power consumption.

(5) The utility model is not only simplified in structure, but also simple in manufacturing process and cheap in price.

(6) Compared with the commonly used FPC, which requires a longer production time, the utility model can shorten the lead time of sample production and has low cost.

(7) The setting of commonly used LEDs is restricted by the size of the FPC, and the configuration position of the LEDs is limited to a small range of the FPC, but the utility model can flexibly configure the LEDs at any position of the backlight module, greatly improving the luminous efficiency of the backlight module. Uniformity and Optical Efficiency.

(8) The commonly used backlight module structure has many restrictions on the position of LEDs, and it is difficult to obtain ideal optical design results. However, the utility model can obtain excellent optical design results because the positions of LEDs can be flexibly configured.

The utility model can be applied to various devices that need to use a backlight module to emit light, especially various mobile devices that include a backlight module, such as: notebook computers, mobile phones, smart phones, tablet computers, tablet phones, keyboard protection covers , touch protection cover, keyboard back cover, touch back cover and backlit keyboard, etc.

A thin light-emitting module provided by the utility model has been introduced in detail above. For those skilled in the art, according to the idea of the utility model embodiment, there will be changes in the specific implementation and application range. As mentioned above, the contents of this specification should not be construed as limiting the present utility model.

Claims (11)

1. a thin-type light emitting module, comprise backlight module and input module, it is characterized in that, backlight module comprises:

Light guiding film, comprises the first side and the second side;

Diaphragm, is arranged on described first side or the second side;

Conductive layer, on the part surface being formed at described diaphragm and conduct power;

Two or more luminescence unit, being configured on described conductive layer and being electrically connected with described conductive layer, described luminescence unit receives described electric power and emits beam, and is provided with for described light to the light path of described light guiding film between described luminescence unit and described light guiding film.

2. thin-type light emitting module according to claim 1, is characterized in that, described light guiding film has two or more open-work, and described luminescence unit is positioned in described open-work.

3. thin-type light emitting module according to claim 1, is characterized in that, there are two pieces of described diaphragms, a diaphragm is reflector plate, and another diaphragm is anti-dazzling screen;

Described reflector plate and described anti-dazzling screen are arranged at the first side and second side of described light guiding film respectively;

Described reflector plate is positioned at the downside of described anti-dazzling screen, and an input module is arranged at the upside of described anti-dazzling screen.

4. thin-type light emitting module according to claim 3, is characterized in that, described anti-dazzling screen is provided with the opening of two or more as transmission region;

The distribution of described opening on described anti-dazzling screen and the transmission region layout needed for running gear match.

5. thin-type light emitting module according to claim 3, is characterized in that, described conductive layer is be arranged at the electric lead between described reflector plate and described anti-dazzling screen.

6. thin-type light emitting module according to claim 1, is characterized in that, the correspondence position above described conductive layer is arranged light shield layer or reflecting layer;

Or, the correspondence position above described conductive layer is arranged light shield layer and reflecting layer.

7. thin-type light emitting module according to claim 3, is characterized in that, described input module comprises input block and conductive film;

Described input block is for receiving the input of user;

Described conductive film comprises soft thin film substrate, and is formed at the circuit layer on described soft thin film substrate;

Described input block is electrically connected with described circuit layer.

8. thin-type light emitting module according to claim 7, is characterized in that, described conductive film substitutes described anti-dazzling screen.

9. thin-type light emitting module according to claim 8, is characterized in that, there are two pieces of described conductive films, is respectively the first conductive film and the second conductive film;

Described first conductive film is arranged on described second conductive film, and is provided with insulating barrier between the two.

10. thin-type light emitting module according to any one of claim 1 to 9, is characterized in that, the surface of described light guiding film side is provided with metal framework.

11. thin-type light emitting modules according to any one of claim 1 to 9, is characterized in that, the distribution of described conductive layer on described diaphragm and the described backlight module layout in action on device matches.