CN108132498B - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN108132498B CN108132498B CN201810170822.2A CN201810170822A CN108132498B CN 108132498 B CN108132498 B CN 108132498B CN 201810170822 A CN201810170822 A CN 201810170822A CN 108132498 B CN108132498 B CN 108132498B
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- light
- switching layer
- light guide
- guide structure
- backlight module
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
Abstract
The invention discloses a backlight module and a display device, comprising: the light guide plate is provided with a first side surface and a second side surface, the first side surface is provided with a light source, the second side surface is provided with at least one switching layer, and the switching layer has the capability of switching between a light transmitting state and a light-tight shading state; one side of the switching layer, which is back to the light guide plate, is provided with a light guide structure, the light guide structure is provided with a light inlet end and a light outlet end, the light inlet end faces the switching layer, and the light outlet end is connected with a preset light outlet area. In the invention, when the switching layer is in a light-transmitting state, part of light emitted from the second side surface of the light guide plate is transmitted through the switching layer, is emitted into the light guide structure through the light-in end part, and is emitted from the light-out end part after being conducted by the light guide structure; the backlight module can not only provide light for the display panel, but also provide light for a preset light emitting area, so that the utilization rate of backlight can be improved; in addition, the process of presetting the light-emitting area to realize light-emitting does not need a power supply to supply power additionally, and the power consumption can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight module and a display device.
Background
In order to improve the value of the display device, some additional functions are often integrated on the display device. Taking the display device as a mobile phone as an example, the mobile phone not only has a basic screen display function, but also has an illumination function (e.g., a flashlight function, a camera flash function).
Taking the implementation of the flashlight function on the mobile phone as an example, a high-brightness light-emitting device is arranged on the back or side of the mobile phone, the mobile phone battery is connected with the high-brightness light-emitting device, and the mobile phone battery supplies power to the high-brightness light-emitting device when the flashlight function is turned on, so that the high-brightness light-emitting device is turned on.
However, in practical applications, it is found that when the flashlight function is turned on, the power consumption is large because the mobile phone battery needs to supply power to not only the backlight source on the mobile phone but also the flashlight, and the power consumption of the mobile phone battery is reduced quickly, which affects the service time of the mobile phone battery.
Disclosure of Invention
The present invention is directed to at least one of the technical problems of the prior art, and provides a backlight module and a display device.
In order to achieve the above object, the present invention provides a backlight module, including: the light guide plate is provided with at least one first side surface and at least one second side surface, the first side surface is provided with a light source, the second side surface is provided with at least one switching layer, and the switching layer has the capability of switching between a light transmitting state and a light-tight shading state;
and a light guide structure is arranged on one side of the switching layer, which is back to the light guide plate, and is provided with a light inlet end and a light outlet end, the light inlet end faces the light guide structure, and the light outlet end is connected with a preset light outlet area.
Optionally, the method further comprises: a frame and a rubber frame;
the frame includes: the frame includes: a first sidewall and a second sidewall fixed with the first sidewall;
the rubber frame comprises a fixing part, the fixing part is provided with a third side face and a fourth side face, the third side face is used for being fixed with the first side wall, and the fourth side face is opposite to the second side wall;
an end of the switching layer is located between the fourth side and the second side wall, and the fourth side cooperates with the second side wall to secure the switching layer.
Optionally, the preset light emitting area includes: a flashlight light-emitting area and a flash lamp light-emitting area;
the number of the switching layers is two, the switching layers are respectively a first switching layer and a second switching layer, and orthographic projections of the first switching layer and the second switching layer on the corresponding second side surfaces are not overlapped;
the number of the light guide structures is two, and the light guide structures are respectively a first light guide structure and a second light guide structure;
the light inlet end of the first light guide structure faces the first switching layer, and the light outlet end of the first light guide structure is connected with the light outlet area of the flashlight;
and the light inlet end of the second light guide structure faces the second switching layer, and the light outlet end of the second light guide structure is connected with the flash lamp light outlet area.
Optionally, the switching layer comprises: automatically controlled light control glass.
Optionally, the light guiding structure comprises: an optical fiber.
Optionally, the light incident end portion is funnel-shaped.
Optionally, the light incident end of the light guide structure is fixed to the surface of the switching layer through a fixing structure.
Optionally, the fixing structure is an optical cement.
Optionally, the method further comprises: and the control module is connected with the switching layer and used for controlling the switching layer to switch between the light transmitting state and the light shading state.
In order to achieve the above object, the present invention also provides a display device including: the backlight module is provided.
The invention has the following beneficial effects:
the invention provides a backlight module and a display device, wherein the backlight module comprises: the light guide plate is provided with at least one first side surface and at least one second side surface, the first side surface is provided with a light source, the second side surface is provided with at least one switching layer, and the switching layer is switched between a light-transmitting state and a light-tight shading layer; one side of the switching layer, which is back to the light guide plate, is provided with a light guide structure, the light guide structure is provided with a light inlet end and a light outlet end, the light inlet end faces the switching layer, and the light outlet end is connected with a preset light outlet area. In the invention, when the switching layer is in a light-transmitting state, part of light emitted from the second side surface of the light guide plate is transmitted through the switching layer, enters the light guide structure through the light-in end part, and is emitted from the light-out end part after being conducted by the light guide structure; the backlight module can not only provide light for the display panel, but also provide light for a preset light emitting area, so that the utilization rate of backlight can be improved; in addition, the process of realizing light emission in the preset light emitting area only depends on light provided by the existing light source, and power supply is not needed additionally, so that power consumption can be effectively reduced compared with the prior art.
Drawings
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a light path of light emitted from the backlight module shown in FIG. 1;
FIG. 3 is a schematic diagram of the frame and the rubber frame cooperating to fix the switching layer in the present invention;
FIG. 4 is a schematic view of the junction of a light guide structure and a switching layer in the present invention;
fig. 5 is a schematic structural diagram of a backlight module according to a second embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, a backlight module and a display device provided by the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention, and fig. 2 is a schematic diagram of a light path of light emitted from the backlight module shown in fig. 1, as shown in fig. 1 and fig. 2, the backlight module includes: a light guide plate 1, a light source 2, a switching layer 3 and a light guide structure 4; wherein the light guide plate 1 has at least one first side 1a and at least one second side 1 b; the light source 2 is arranged on the first side surface 1a of the light guide plate 1, and the switching layer 3 is arranged on the second side surface 1b of the light guide plate 1; the light guide structure 4 is positioned on one side of the switching layer 3, which is opposite to the light guide plate 1, the light guide structure 4 is provided with a light inlet end 4a and a light outlet end 4b, the light inlet end 4a faces the switching layer 3, and the light outlet end 4b is connected with a preset light outlet area 5; the switching layer 3 has the capability of switching between a light-transmitting state and a light-blocking state, and the light guide structure 4 is used for guiding light entering from the light-entering end 4a to the light-exiting end 4b and enabling the light to exit from the preset light-exiting region 5.
With continued reference to fig. 2, the light emitted from the light source 2 enters the light guide plate 1 through the first side surface 1a, wherein a portion of the light is scattered by the dots and emitted from the light guide plate 1 toward one side of the display panel (the upper surface of the light guide plate 1 in fig. 2) to provide the light to the display panel; the other part of the light exits from the side of the light guide plate 1. I.e. there is light exiting the second side 1b of the light guide plate 1.
When the switching layer 3 is in the light-transmitting state, part of the light emitted from the second side surface 1b transmits through the switching layer 3 and is emitted into the light guide structure 4 through the light-incident end 4a, and is emitted from the light-emitting end 4b after being conducted by the light guide structure 4.
When the switching layer 3 is in the light-blocking state, light emitted from the second side surface 1b cannot pass through the switching layer 3, and the light-emitting end 4b of the light guide structure 4 is not emitted with light.
In the prior art, the light emitted from the side surface of the light guide plate 1 is absorbed by the surrounding structures, but in the present invention, the light emitted from the side surface of the light guide plate is collected by the light guide structure 4 and is conducted to the preset light-emitting area 5, so that the preset light-emitting area 5 emits light with a certain brightness, thereby improving the utilization rate of the backlight. In addition, the process of light extraction of the preset light extraction region 5 only depends on light provided by the existing light source 2, and power supply is not needed, so that power consumption can be effectively reduced compared with the prior art.
It should be noted that, in the present invention, the number of the first side surfaces 1a on the light guide plate 1, on which the light sources 2 can be disposed, may be 1 or more, the number of the second side surfaces 1b, on which the switching layers 3 can be disposed, may be 1 or more, the number of the switching layers 3 that can be disposed on each second side surface 1b may be 1 or more, in the drawing, the number of the first side surfaces 1a and the second side surfaces 1b is 1, and the case where one switching layer 3 is disposed on the second side surface 1b is merely exemplary, and does not limit the technical solution of the present invention.
Optionally, switching layer 3 includes: the electric control dimming glass comprises two layers of glass, and a liquid crystal layer and an electrode layer (not shown) which are arranged between the two layers of glass; when no voltage is applied to the electrode layer, the liquid crystal molecules are in an irregular dispersion state, and the electric control dimming glass is in a shading state; when a certain voltage is applied to the electrode layer, the liquid crystal molecules are arranged in order, light can penetrate through the liquid crystal molecules freely, and the electric control dimming glass is in a light-transmitting state.
Optionally, the light guiding structure 4 comprises: an optical fiber. The light guide fiber is mainly made of quartz (or high polymer materials) and has a skin-core structure with different refractive indexes, and light conduction is realized by utilizing the total reflection effect of a skin layer. In the invention, when the light guide fiber is adopted as the light guide structure, the light guide fiber can be randomly arranged due to high flexibility of the light guide fiber, and the preset light emitting area 5 can also be randomly designed according to the overall structure of the backlight module, so that the design is more open and the appearance is more unique.
In the present invention, one light guiding structure 4 may comprise 1 or more light guiding fibers. When a light guide structure 4 includes a plurality of light guide fibers, light incident end portions 4a of the plurality of light guide fibers respectively correspond to different positions of the switching layer 3, and light emergent end portions 4b of the plurality of light guide fibers are converged into a light emergent end portion 4b, that is, one light guide structure 4 has a plurality of light incident end portions 4a and a light emergent end portion 4b, and the light emergent brightness of the light emergent end portion 4b can be effectively improved. In the drawings, the wiring manner of the plurality of optical fibers is merely illustrative, and does not limit the technical solution of the present invention. In practical application, the wiring mode of the plurality of light guide fibers can be correspondingly designed and adjusted according to the overall structure of the backlight module.
In addition, the switching layer 3 includes an electrically controlled dimming glass, and the light guide structure 4 includes a light guide fiber, which is only a specific solution in the present invention and does not limit the technical solution of the present invention. In the present invention, the switching layer 3 may also be another component capable of switching between the light-transmitting state and the light-shielding state, and the light guide structure 4 may also be another component capable of conducting light, which is not illustrated here.
Fig. 3 is a schematic view of the frame and the rubber frame cooperating to fix the switching layer, as shown in fig. 3, the backlight module further includes: a frame 7 and a rubber frame 8; wherein, frame 7 includes: a first side wall 7a and a second side wall 7b fixed to the first side wall 7 a; the rubber frame 8 comprises a fixing portion, the fixing portion is provided with a third side face 8a and a fourth side face 8b, the third side face 8a is used for being fixed with the first side wall 7a, the fourth side face 8b is opposite to the second side wall 7b, the end portion of the switching layer 3 is located between the fourth side face 8b and the second side wall 7b, and the fourth side face 8b is matched with the second side wall 7b to fix the switching layer 3. In the present invention, the end of the switching layer 3 can be clamped and fixed by only designing the existing frame 7 structure to have the second sidewall 7b and by matching the second sidewall 7b with the rubber frame 8, without using an additional fixing component.
Fig. 4 is a schematic diagram of the junction between the light guide structure and the switching layer in the present invention, as shown in fig. 4, as an alternative in the present invention, the light incident end 4a of the light guide structure 4 is fixed on the surface of the switching layer 3 by the fixing structure 9, which can effectively prevent the light guide structure 4 from being displaced during use. Preferably, the fixing structure 9 is optical adhesive (OCA), which has the characteristics of high viscosity, high transmittance and low haze, and the light guide structure 4 and the switching layer 3 can be reliably fixed together by using the characteristics of high viscosity of the optical adhesive; the characteristics of high transmittance and low haze of the optical cement can reduce the attenuation of light in the transmission process and ensure the quantity of light rays incident to the light guide structure 4.
In this embodiment, preferably, the light-entering end portion 4a of the light guide structure 4 is funnel-shaped, and a large-sized light-entering opening of the light-entering end portion 4a can effectively increase the facing area of the light guide structure 4 and the switching layer 3, so as to increase the quantity of light rays entering the light guide structure 4 and ensure the light-emitting brightness of the light-emitting end portion 4 b.
Optionally, the backlight module further includes: and the control module 6 is connected with each switching layer 3 and is used for controlling each switching layer 3 to switch between a light transmitting state and a light shading state. It should be noted that the situation in which the control module 6 is located on the frame 7 in the drawings only serves for illustrative purposes, and does not limit the technical solution of the present invention.
An embodiment of the present invention provides a backlight module, including: the light guide plate is provided with at least one first side surface and at least one second side surface, the first side surface is provided with a light source, the second side surface is provided with at least one switching layer, and the switching layer is switched between a light-transmitting state and a light-tight shading layer; one side of the switching layer, which is back to the light guide plate, is provided with a light guide structure, the light guide structure is provided with a light inlet end and a light outlet end, the light inlet end faces the switching layer, and the light outlet end is connected with a preset light outlet area. In the invention, when the switching layer is in a light transmitting state, the light source arranged on the first side surface can provide light for the display panel and can also provide light for the preset light emitting area, so that the utilization rate of the light source can be improved. In addition, the process of realizing light emission in the preset light emitting area only depends on light provided by the existing light source, and power supply is not needed additionally, so that power consumption can be effectively reduced compared with the prior art.
Fig. 5 is a schematic structural diagram of a backlight module according to a second embodiment of the present invention, and as shown in fig. 5, this embodiment is a specific implementation of the backlight module according to the first embodiment, in which the preset light-emitting area includes: a flashlight light out area 501 and a flash light out area 502.
The flashlight light-emitting area 501 in the present invention is an area where the display device emits light when the flashlight function is implemented, and the flash light-emitting area 502 is an area where the display device emits light when the flash function is implemented.
The number of switching layers is two and is respectively the first switching layer 301 and the second switching layer 302, and orthographic projections of the first switching layer 301 and the second switching layer 302 on the corresponding second side 1b do not overlap.
The number of light guide structures is two and is a first light guide structure 401 and a second light guide structure 402, respectively; the light-in end 4a of the first light guide structure 401 faces the first switching layer 301, and the light-out end 4b of the first light guide structure 401 is connected to the flashlight light-out area 501; the light-in end 4a of the second light guide structure 402 faces the second switching layer 302, and the light-out end 4b of the second light guide structure 402 is connected to the flash light-out region 502.
When the display device starts the flashlight function, the control module 6 controls the first switching layer 301 to be switched from the light-shielding state to the light-transmitting state, part of light emitted from the second side surface 1b transmits through the first switching layer 301 and enters the first light guide structure 401, the first light guide structure 401 guides the incident light to the flashlight light-emitting area 501, and the flashlight light-emitting area 501 emits light; when the display device starts the flash function, the control module 6 controls the second switching layer 302 to switch to the transparent state, a part of the light emitted from the second side surface 1b transmits through the second switching layer 302 and enters the second light guide structure 402, the second light guide structure 402 guides the incident light to the flash light emitting area 502, and the flash light emitting area 502 emits the light.
It should be noted that, in practical applications, when the light source 2 is turned on, the brightness of the light emitted from each surface of the light guide plate 1 is approximately 10000nit, which is enough to support the brightness requirement required for the flashlight function and the flash lamp function.
Of course, in practical application, a plurality of preset light emitting areas can be set according to actual needs to realize a plurality of different functions; accordingly, a corresponding plurality of switching layers and light guiding structures need to be provided, details of which are not described here.
A third embodiment of the present invention provides a display device, which includes a backlight module and a display panel, where the backlight module may adopt the backlight module provided in the first embodiment or the second embodiment, and specific descriptions may refer to the contents in the first embodiment and the second embodiment, and are not repeated herein.
The display device in the invention can be a television, a mobile phone, a notebook computer, a navigator, a panel and other equipment with a display function.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A backlight module, comprising: the light guide plate is provided with at least one first side surface and at least one second side surface, the first side surface is provided with a light source, the second side surface is provided with at least one switching layer, and the switching layer has the capability of switching between a light transmitting state and a light-tight shading state;
a light guide structure is arranged on one side of the switching layer, which is opposite to the light guide plate, and has a light inlet end and a light outlet end, the light inlet end faces the switching layer, and the light outlet end is connected with a preset light outlet area
Further comprising: a frame and a rubber frame;
the frame includes: a first sidewall and a second sidewall fixed with the first sidewall;
the rubber frame comprises a fixing part, the fixing part is provided with a third side face and a fourth side face, the third side face is used for being fixed with the first side wall, and the fourth side face is opposite to the second side wall;
the end of the switching layer is located between the fourth side and the second side wall, and the fourth side and the second side wall cooperate to clamp and fix the switching layer.
2. The backlight module according to claim 1, wherein the predetermined light-emitting area comprises: a flashlight light-emitting area and a flash lamp light-emitting area;
the number of the switching layers is two, the switching layers are respectively a first switching layer and a second switching layer, and orthographic projections of the first switching layer and the second switching layer on the corresponding second side surfaces are not overlapped;
the number of the light guide structures is two, and the light guide structures are respectively a first light guide structure and a second light guide structure;
the light inlet end of the first light guide structure faces the first switching layer, and the light outlet end of the first light guide structure is connected with the light outlet area of the flashlight;
and the light inlet end of the second light guide structure faces the second switching layer, and the light outlet end of the second light guide structure is connected with the flash lamp light outlet area.
3. The backlight module of claim 1, wherein the switching layer comprises: automatically controlled light control glass.
4. A backlight module according to claim 1, wherein the light guide structure comprises: an optical fiber.
5. The backlight module according to claim 1, wherein the light incident end is funnel-shaped.
6. The backlight module according to claim 1, wherein the light incident end of the light guide structure is fixed on the surface of the switching layer by a fixing structure.
7. A backlight module according to claim 6, wherein the fixing structure comprises: and (3) optical cement.
8. The backlight module according to any one of claims 1-7, further comprising: and the control module is connected with the switching layer and used for controlling the switching layer to switch between the light transmitting state and the light shading state.
9. A display device, comprising: a backlight module as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170822.2A CN108132498B (en) | 2018-03-01 | 2018-03-01 | Backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810170822.2A CN108132498B (en) | 2018-03-01 | 2018-03-01 | Backlight module and display device |
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| CN108132498A CN108132498A (en) | 2018-06-08 |
| CN108132498B true CN108132498B (en) | 2020-04-17 |
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| CN201810170822.2A Active CN108132498B (en) | 2018-03-01 | 2018-03-01 | Backlight module and display device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093814A (en) * | 1994-01-27 | 1994-10-19 | 匡敖生 | Photoconductive indicator |
| CN101464753A (en) * | 2007-12-19 | 2009-06-24 | 索尼株式会社 | Display device |
| CN102540571A (en) * | 2012-02-16 | 2012-07-04 | 深圳市华星光电技术有限公司 | Liquid crystal display module with projection function and liquid crystal display device |
| CN102563401A (en) * | 2010-09-27 | 2012-07-11 | 索尼公司 | Light source device and stereoscopic display device |
| CN203442607U (en) * | 2013-09-05 | 2014-02-19 | 西安Tcl软件开发有限公司 | Edge-in-type backlight structure and liquid crystal module |
| CN104696887A (en) * | 2015-03-26 | 2015-06-10 | 合肥鑫晟光电科技有限公司 | Light guide plate, backlight module, display device and display control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6364891B2 (en) * | 2014-04-01 | 2018-08-01 | セイコーエプソン株式会社 | Electro-optical device, electronic device, and semiconductor device |
-
2018
- 2018-03-01 CN CN201810170822.2A patent/CN108132498B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093814A (en) * | 1994-01-27 | 1994-10-19 | 匡敖生 | Photoconductive indicator |
| CN101464753A (en) * | 2007-12-19 | 2009-06-24 | 索尼株式会社 | Display device |
| CN102563401A (en) * | 2010-09-27 | 2012-07-11 | 索尼公司 | Light source device and stereoscopic display device |
| CN102540571A (en) * | 2012-02-16 | 2012-07-04 | 深圳市华星光电技术有限公司 | Liquid crystal display module with projection function and liquid crystal display device |
| CN203442607U (en) * | 2013-09-05 | 2014-02-19 | 西安Tcl软件开发有限公司 | Edge-in-type backlight structure and liquid crystal module |
| CN104696887A (en) * | 2015-03-26 | 2015-06-10 | 合肥鑫晟光电科技有限公司 | Light guide plate, backlight module, display device and display control system |
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| CN108132498A (en) | 2018-06-08 |
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