CN112987407A - Backlight module and electronic equipment - Google Patents
Backlight module and electronic equipment Download PDFInfo
- Publication number
- CN112987407A CN112987407A CN202110352851.2A CN202110352851A CN112987407A CN 112987407 A CN112987407 A CN 112987407A CN 202110352851 A CN202110352851 A CN 202110352851A CN 112987407 A CN112987407 A CN 112987407A
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- China
- Prior art keywords
- light
- backlight module
- light source
- assembly
- diffusion
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Abstract
The application discloses backlight unit and electronic equipment belongs to electronic equipment technical field. The backlight module comprises an installation frame, a light source, a light guide assembly and a light diffusion assembly; the mounting frame is provided with a mounting groove, the mounting groove is positioned on the light-emitting side of the backlight module, the light source is mounted in the mounting groove, the light guide assembly is at least partially positioned in the mounting groove, and the light guide assembly is used for guiding light rays emitted by the light source to the light diffusion assembly; the light diffusion component is used for diffusing the light rays emitted by the light source to the backlight display area. The embodiment of the application has the beneficial effects that the shading black edge width of the backlight module is smaller, and the screen of the display screen occupies a higher ratio.
Description
Technical Field
The application belongs to the technical field of electronic equipment, and particularly relates to a backlight module and electronic equipment.
Background
With the rapid development of the electronic equipment industry, the requirements of consumers on the display screen ratio are higher and higher, and the requirements are more and more extreme. Taking a mobile phone as an example, some Display screens of mobile phones are Liquid Crystal Displays (LCDs), and the traditional LCD screens face a large pressure.
In the prior art, various schemes for increasing the screen duty ratio, such as a Chip On flex (or, Chip On Film, commonly called COF) structure, a narrow frame, etc., have been proposed for LCD screens.
However, an important bottleneck in the aspect ratio of the LCD screen to be raised is that the black edge width of the light mixing area on the light incident side of the backlight is large, so that the aspect ratio of the LCD screen is low.
Disclosure of Invention
The embodiment of the application aims to provide a backlight module and an electronic device, and the problems that in the prior art, the shading black edge width of the backlight module is large and the screen occupation ratio is low can be solved.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a backlight module, which includes an installation frame, a light source, a light guide assembly, and a light diffusion assembly;
the mounting frame is provided with a mounting groove, the mounting groove is positioned on the light-emitting side of the backlight module, the light source is mounted in the mounting groove, the light guide assembly is at least partially positioned in the mounting groove, and the light guide assembly is used for guiding light rays emitted by the light source to the light diffusion assembly;
the light diffusion component is used for diffusing the light rays emitted by the light source to the backlight display area.
In a second aspect, an embodiment of the present application provides an electronic device, including the backlight module as described above. In the embodiment of the application, the installation frame is used for bearing the light source, the light guide assembly and the light scattering assembly, the light source is arranged for providing the light source, the light guide assembly is arranged for transmitting light emitted by the light source to the light scattering assembly, and the light scattering assembly is used for dispersing the light and forming backlight. Specifically, the setting of mounting groove is used for holding the light source, and the mounting groove can reserve great space for light source and leaded light subassembly to the light that sends the light source through leaded light subassembly guides the astigmatic subassembly better. After the installation groove provides a large layout space for the light source and the light guide assembly, the layout width of the light source and the light guide assembly can be reduced, the shading black edge width of the backlight module can be further reduced, and the screen occupation ratio of the display screen is improved. The embodiment of the application has the beneficial effects that the shading black edge width of the backlight module is smaller, and the screen of the display screen occupies a higher ratio.
Drawings
FIG. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure;
fig. 2 is a cross-sectional view of the backlight module of fig. 1 at a-a.
Description of reference numerals:
10. installing a frame; 11. installing a groove; 20. a light source; 21. a flexible circuit board; 22. a light emitting diode; 30. a light guide assembly; 31. a first reflective member; 32. a second reflector; 40. a light dispersing component; 41. a light guide plate; 42. a reflective sheet; 43. a diffusion sheet; 44. a first prism sheet; 45. a second prism sheet; 46. diffusing the black stripes; 50. a light shielding member.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The backlight module and the electronic device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Referring to fig. 1 and 2, an embodiment of the present application provides a backlight module including a mounting frame 10, a light source 20, a light guide assembly 30, and a light dispersion assembly 40;
the mounting frame 10 is provided with a mounting groove 11, the mounting groove 11 is located on a light emitting side of the backlight module, the light source 20 is mounted in the mounting groove 11, the light guide assembly 30 is at least partially located in the mounting groove 11, and the light guide assembly 30 is used for guiding light emitted by the light source 20 to the light diffusion assembly 40;
wherein, the light diffusion component 40 is used for diffusing the light emitted from the light source 20 to the backlight display area.
In the embodiment of the present application, the mounting frame 10 is configured to carry the light source 20, the light guide assembly 30 and the light diffusion assembly 40, the light source 20 is configured to provide a light source, the light guide assembly 30 is configured to transmit light emitted from the light source 20 to the light diffusion assembly 40, and the light diffusion assembly 40 is configured to disperse the light and form a backlight. Specifically, the installation groove 11 is configured to accommodate the light source 20, and the installation groove 11 may reserve a large space for the light source 20 and the light guide assembly 30, so as to better guide the light emitted from the light source 20 to the light diffusion assembly 40 through the light guide assembly 30. After the installation groove 11 provides a large layout space for the light source 20 and the light guide assembly 30, the layout width of the light source 20 and the light guide assembly 30 can be reduced, and then the shading black edge width of the backlight module can be reduced, and the screen occupation ratio of the display screen is improved. The embodiment of the application has the beneficial effects that the shading black edge width of the backlight module is smaller, and the screen of the display screen occupies a higher ratio.
The mounting frame 10 may be a metal frame, such as an iron frame or an alloy frame. The backlight module is connected with the display screen or is a part of the display screen.
Optionally, in an embodiment of the present application, the light source 20 includes a flexible circuit board 21 and at least one light emitting diode, a first surface of the flexible circuit board 21 is provided with a patch area, and the light emitting diode 22 is mounted in the patch area;
the second surface of the flexible circuit board 21 is a fixed surface, the second surface of the flexible circuit board 21 is fixedly connected in the mounting groove 11, and the second surface of the flexible circuit board 21 is opposite to the first surface.
In this application embodiment, the setting of flexible circuit board 21 can make emitting diode 22's cloth spare more nimble changeable, can make light source 20's installation convenient and reliable more simultaneously, can be connected with the power that corresponds through flexible circuit board 21 to in order to improve the energy for emitting diode 22. The flexible circuit board 21 may be indirectly connected to the power supply, for example, the flexible circuit board 21 is connected to a motherboard structure, and the motherboard structure is connected to the power supply. Can fix flexible circuit board 21 in mounting groove 11 better through the setting of stationary plane, modes such as accessible bonding, magnetism are inhaled, welding, joint, mounting are fixed flexible circuit board 21 in mounting groove 11.
Optionally, in an embodiment of the present application, an adhesive member is disposed on the fixing surface, and the second surface of the flexible circuit board 21 is fixedly connected in the mounting groove 11 through the adhesive member.
In the embodiment of the present application, the adhesive member is provided to fix the flexible circuit board 21 in the mounting groove 11 by means of adhesion. The adhesive member may be a double-sided tape or a tape layer coated on the flexible circuit board 21.
Optionally, in an embodiment of the present application, the light guide assembly 30 includes at least one reflector, the light emitting direction of the light source 20 faces the reflector, and the reflector is used for reflecting the light emitted from the light source 20 to the light diffusion assembly 40.
In the embodiment of the present application, the reflector is disposed to reflect the light emitted from the light source 20 to the light diffusion assembly 40, and form a backlight with soft light rays by the light diffusion effect of the light diffusion assembly 40.
Optionally, in an embodiment of the present application, the light guide assembly 30 includes a first reflective member 31 and a second reflective member 32, the first reflective member 31 and the second reflective member 32 are disposed at an angle, the first reflective member 31 is disposed at an angle to the light emitting direction of the light source 20, and the second reflective member 32 is disposed at an angle to the light diffusion assembly 40;
the first reflector 31 is configured to reflect the light emitted from the light source 20 to the second reflector 32, and the second reflector 32 is configured to reflect the light reflected by the first reflector 31 to the light dispersion assembly 40.
In the embodiment of the present application, the first reflector 31 and the second reflector 32 are disposed to better guide the light of the light source 20, and the light source 20 can be disposed at a more flexible position by the cooperation of the two reflectors. More reflectors can be arranged as required, so that more reflection effects can be realized, the arrangement position of the light source 20 is more variable, and the arrangement mode of the backlight module can be more diversified as required.
It should be noted that the light dispersion member 40 may at least partially extend toward the light guide member 30 and form a slope surface adapted to the reflection member, and the reflection member may be attached to the slope surface. For example, the light guide assembly 30 includes a first reflective member 31 and a second reflective member 32, the light dispersing assembly 40 may have a first inclined surface and a second inclined surface, the first reflective member 31 is adhered to or abutted against the first inclined surface, and the second reflective member 32 is adhered to or abutted against the second inclined surface.
Optionally, in an embodiment of the present application, the light guide assembly 30 includes at least one optical fiber, a first end of the optical fiber is disposed opposite to the light emitting side of the light source 20, and a second end of the optical fiber is disposed opposite to the light dispersion assembly 40.
In the embodiment of the present application, the optical fiber may be disposed to guide the light emitted from the light source 20, and after the light is guided to the light diffusion assembly 40, a backlight with soft light may be formed by the light diffusion effect of the light diffusion assembly 40. Optical fiber can keep stronger leaded light effect under certain angle of buckling, can make light source 20's the position that sets up more changeable through optical fiber, can reduce mounting groove 11 as required simultaneously, and then can further reduce the width on shading black border.
It should be noted that the light guide assembly 30 of the present application is not limited to two light guide structures, i.e., the reflector and the optical fiber, and other light guide structures may be provided as needed as long as light guiding can be achieved.
Optionally, in the embodiment of the present application, the light diffusion assembly 40 includes a light guide plate 41, a reflection sheet 42 and a diffusion sheet 43, the light guide plate 41 is used for receiving the light emitted from the light source 20, and the reflection sheet 42 and the diffusion sheet 43 are respectively located at two opposite sides of the light guide plate 41.
In the embodiment of the present application, the light guide plate 41 is disposed to receive the light emitted from the light source 20, and the reflector 42 and the diffuser 43 are cooperatively disposed to diffuse the light toward the diffuser 43 of the light guide plate 41, so as to form a backlight with soft light. Diffuser 43 is located in an area that at least partially covers the backlight display area described above in this application.
The inclined surface is provided on the light guide plate 41, and the light guide plate 41 at least partially extends in the direction of the reflector.
Optionally, in an embodiment of the present application, the light diffusion assembly 40 further includes a first prism sheet 44 and a second prism sheet 45, the first prism sheet 44 is disposed on a side of the diffusion sheet 43 facing away from the light guide plate 41, and the second prism sheet 45 is disposed on a side of the first prism sheet 44 facing away from the diffusion sheet 43.
In the embodiment of the present application, the first prism sheet 44 and the second prism sheet 45 can blend the light scattered by the diffusion sheet 43, so that the scattered light is more uniform. The cooperation of the first prism sheet 44 and the second prism sheet 45 means that the scattered light can be uniformly distributed in the backlight display area.
Optionally, in an embodiment of the present application, a light shielding member 50 is disposed on a side of the mounting groove 11 away from the groove bottom, the light shielding member 50 covers the mounting groove 11, a first side of the light shielding member 50 is connected to the mounting frame 10, and a second side of the light shielding member 50 is connected to the light scattering assembly 40.
In the embodiment of the present application, the light shielding member 50 is disposed to prevent a portion of light from leaking from the opening of the mounting groove 11, so that more light can enter the light diffusion member 40, thereby improving the backlight effect. The light blocking member 50 may be provided as a light blocking paste.
It should be noted that the light dispersion assembly 40 further includes diffusion black stripes 46, the diffusion black stripes 46 are disposed on the diffusion sheet 43, and the diffusion black stripes 46 may be between the light-shielding member 50 and the mounting groove 11.
The embodiment of the application further provides electronic equipment, including the backlight module as above, wherein, the display screen is in one side of backlight module, backlight module's backlight display area covers the display area of display screen.
In the embodiment of the application, the electronic device with the backlight module can have a higher screen occupation ratio. Specifically, the mounting frame 10 is configured to carry the light source 20, the light guide assembly 30 and the light diffusion assembly 40, the light source 20 is configured to provide a light source, the light guide assembly 30 is configured to transmit light emitted from the light source 20 to the light diffusion assembly 40, and the light diffusion assembly 40 is configured to disperse the light and form a backlight. Specifically, the installation groove 11 is configured to accommodate the light source 20, and the installation groove 11 may reserve a large space for the light source 20 and the light guide assembly 30, so as to better guide the light emitted from the light source 20 to the light diffusion assembly 40 through the light guide assembly 30. After the installation groove 11 provides a large layout space for the light source 20 and the light guide assembly 30, the layout width of the light source 20 and the light guide assembly 30 can be reduced, and then the shading black edge width of the backlight module can be reduced, and the screen occupation ratio of the display screen is improved. The embodiment of the application has the beneficial effects that the shading black edge width of the backlight module is smaller, and the screen of the display screen occupies a higher ratio.
Note that the width of the light-shielding black border in the present application is W, such as the width of the black border at the bottom in fig. 1, and W in fig. 2.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A backlight module is characterized by comprising an installation frame, a light source, a light guide component and a light diffusion component;
the mounting frame is provided with a mounting groove, the mounting groove is positioned on the light-emitting side of the backlight module, the light source is mounted in the mounting groove, the light guide assembly is at least partially positioned in the mounting groove, and the light guide assembly is used for guiding light rays emitted by the light source to the light diffusion assembly;
the light diffusion component is used for diffusing the light rays emitted by the light source to the backlight display area.
2. The backlight module as claimed in claim 1, wherein the light source comprises a flexible circuit board and at least one light emitting diode, a first surface of the flexible circuit board is provided with a sticker region, and the light emitting diode is mounted in the sticker region;
the second surface of the flexible circuit board is a fixed surface, the second surface of the flexible circuit board is fixedly connected in the mounting groove, and the second surface of the flexible circuit board is opposite to the first surface.
3. The backlight module as claimed in claim 2, wherein the fixing surface is provided with an adhesive member, and the second surface of the flexible circuit board is fixedly connected to the mounting recess by the adhesive member.
4. A backlight module according to claim 1, wherein the light guide assembly comprises at least one reflector, the light source emits light toward the reflector, and the reflector is configured to reflect the light emitted from the light source to the light diffuser assembly.
5. The backlight module according to claim 4, wherein the light guide assembly comprises a first reflector and a second reflector, the first reflector and the second reflector are disposed at an angle, the first reflector is disposed at an angle with respect to a light emitting direction of the light source, and the second reflector is disposed at an angle with respect to the light diffusion assembly;
the first reflecting piece is used for reflecting the light rays emitted by the light source to the second reflecting piece, and the second reflecting piece is used for reflecting the light rays reflected by the first reflecting piece to the light scattering assembly.
6. A backlight module according to claim 1, wherein the light guide assembly comprises at least one optical fiber, a first end of the optical fiber being disposed opposite to the light emitting side of the light source, and a second end of the optical fiber being disposed opposite to the light dispersion assembly.
7. The backlight module as claimed in claim 1, wherein the light diffusion assembly comprises a light guide plate for receiving the light emitted from the light source, a reflective sheet and a diffusion sheet, the reflective sheet and the diffusion sheet being disposed at opposite sides of the light guide plate.
8. The backlight module of claim 7, wherein the light diffusion assembly further comprises a first prism sheet and a second prism sheet, the first prism sheet is disposed on a side of the diffusion sheet facing away from the light guide plate, and the second prism sheet is disposed on a side of the first prism sheet facing away from the diffusion sheet.
9. The backlight module as claimed in claim 1, wherein a side of the mounting groove facing away from the groove bottom is provided with a light shielding member, the light shielding member covers the mounting groove, a first side of the light shielding member is connected to the mounting frame, and a second side of the light shielding member is connected to the light diffusion member.
10. An electronic device, comprising a display screen and the backlight module according to any one of claims 1 to 9, wherein the display screen is located at one side of the backlight module, and a backlight display area of the backlight module covers a display area of the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110352851.2A CN112987407A (en) | 2021-03-31 | 2021-03-31 | Backlight module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110352851.2A CN112987407A (en) | 2021-03-31 | 2021-03-31 | Backlight module and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112987407A true CN112987407A (en) | 2021-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110352851.2A Pending CN112987407A (en) | 2021-03-31 | 2021-03-31 | Backlight module and electronic equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN112987407A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200715A (en) * | 2021-12-13 | 2022-03-18 | 武汉华星光电技术有限公司 | Backlight module and display panel |
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