CN114924344B - Light guide plate and backlight module - Google Patents
Light guide plate and backlight module Download PDFInfo
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- CN114924344B CN114924344B CN202210613414.6A CN202210613414A CN114924344B CN 114924344 B CN114924344 B CN 114924344B CN 202210613414 A CN202210613414 A CN 202210613414A CN 114924344 B CN114924344 B CN 114924344B
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- light source
- guide plate
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- light guide
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- 230000004308 accommodation Effects 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 239000012788 optical film Substances 0.000 description 13
- 230000003287 optical effect Effects 0.000 description 8
- 239000010408 film Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 1
Classifications
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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
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- 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
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the application discloses a light guide plate and a backlight module, wherein the light guide plate comprises a main body part, a light incidence part and first net points, the main body part comprises a first surface and a second surface which are oppositely arranged, the first surface is used as a light emitting surface, and the light incidence part is connected with the second surface; the first lattice points are arranged on the second surface and around the light incidence part; in the subsequent module process, the light source and the light guide plate are prevented from being arranged on the same plane, the influence of the light source on the frame width of the backlight module is reduced, the narrow frame effect is realized, and the effect of improving the light emitting uniformity of the light guide plate can be achieved.
Description
Technical Field
The application relates to the technical field of display, in particular to a light guide plate and a backlight module.
Background
With the development of liquid crystal display technology, users are required to have more functions and fashionable appearances for electronic products such as mobile phones, tablet computers, cameras and the like. At present, the development trend of mobile phones is light, thin and close to a full screen.
In the research and practice process of the prior art, the inventor of the application finds that the width of the lower frame of the conventional side-entry backlight module matched with the liquid crystal panel can reach 1 to 1.5 mm, and the scheme with the shortest optical path at the present stage is a flip-chip packaging scheme on a board, and the limit width of the lower frame of a display area is estimated to be 1.7mm, so that the development of an extremely comprehensive screen is limited by the wide frame of the conventional backlight module. Therefore, the design scheme of the existing backlight module needs to be changed, and a brand new backlight design scheme is hoped to achieve that the width of the lower frame of the display area is 1.1 mm, namely the width of the lower frame of the display panel is smaller than 0.9mm.
Disclosure of Invention
The embodiment of the application provides a light guide plate, can arrange the light source in the below of light guide plate, avoided setting up light source and light guide plate at the coplanar, subtracted the influence of light source to backlight unit frame width, realized narrow frame effect.
The embodiment of the application provides a light guide plate, which comprises a light incident surface and a light emergent surface, wherein the light guide plate comprises a main body part, a light incident part and first net points, the main body part comprises a first surface and a second surface which are oppositely arranged, the first surface is used as the light emergent surface, and the light incident part is connected with the second surface;
the first dots are disposed on the second face and around the light incident portion.
Optionally, in some embodiments of the present application, the light incident portion includes a bottom surface, a first side surface and a second side surface that are disposed opposite to each other, the bottom surface is connected to the first side surface and the second side surface, the bottom surface and the second side surface are disposed opposite to each other, and at least one of the bottom surface, the first side surface, and the second side surface serves as the light incident surface.
Optionally, in some embodiments of the present application, the density of the first dots increases in a direction from the light incident portion toward the edge of the light guide plate.
Optionally, in some embodiments of the present application, the light guide plate further includes a second dot, where the second dot is disposed on the bottom surface.
Optionally, in some embodiments of the present application, the density of the second dots decreases from a center of the light incident portion toward an edge of the light incident portion.
Optionally, in some embodiments of the present application, the bottom surface includes a convex arc shape.
Correspondingly, the embodiment of the application also provides a backlight module, which comprises:
a light guide plate as described above;
a frame in which a first accommodation groove and a second accommodation groove are provided; the first accommodation groove accommodates the main body portion; the second accommodation groove accommodates the light incident portion; an accommodating space is arranged between the light incidence part and the groove wall of the second accommodating groove;
the reflecting layer is arranged below the light guide plate;
the light source is arranged in the accommodating space.
Optionally, in some embodiments of the present application, the reflective layer includes a first reflective layer and a second reflective layer, where the first reflective layer is fixedly connected to the second surface and is disposed around the light incident portion; the second reflecting layer is fixedly connected with the bottom surface.
Optionally, in some embodiments of the present application, the reflective layer includes a first reflective layer and a second reflective layer, and the first reflective layer is fixedly connected to a bottom of the first accommodating groove; the second reflecting layer is fixedly connected to the bottom of the second accommodating groove.
Optionally, in some embodiments of the present application, the light source includes a first light source and a second light source located within the accommodating space; the first light source corresponds to the first side and the second light source corresponds to the second side.
Optionally, in some embodiments of the present application, optical axes of the first light source and the second light source form an oblique angle with the light incident surface.
The light guide plate comprises a main body part, a light incidence part and first net points, wherein the main body part comprises a first surface and a second surface which are oppositely arranged, the first surface is used as a light emitting surface, and the light incidence part is connected with the second surface; the first lattice points are arranged on the second surface and around the light incidence part; in the subsequent module process, the light source and the light guide plate are prevented from being arranged on the same plane, the influence of the light source on the frame width of the backlight module is reduced, the narrow frame effect is realized, and the effect of improving the light emitting uniformity of the light guide plate can be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a light guide plate structure according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a light guide plate structure according to a second embodiment of the present disclosure;
fig. 3 is a schematic view of a light guide plate structure according to a third embodiment of the present disclosure;
fig. 4 is a schematic diagram of a light guide plate structure according to a fourth embodiment of the present application.
Reference numerals illustrate: the light guide plate 100, the light incident surface 100a, the light emitting surface 100b, the body portion 110, the light incident portion 120, the first dot 111, the first surface 110a, the second surface 110b, the bottom surface 120a, the first side surface 120b, the second side surface 120c, the second dot 121, the backlight module 200, the frame 210, the reflective layer 220, the light source 230, the first accommodating groove 211, the second accommodating groove 212, the accommodating space 212a, the first reflective layer 221, the second reflective layer 222, the bottom light source/first light source 231, the second light source 232, the optical film 240, the semi-reflective semi-transparent film 250, and the optical axis 230a.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and explanation only and is not intended to limit the present application. In this application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The embodiment of the application provides a display panel, and the detailed description is given below. The following description of the embodiments is not intended to limit the preferred embodiments.
Embodiment 1,
Referring to fig. 1, the present embodiment provides a light guide plate 100, which includes a light incident surface 100a and a light emergent surface 100b, wherein the light guide plate 100 includes a main body portion 110, a light incident portion 120 and a first dot 111, the main body portion 110 includes a first surface 110a and a second surface 110b disposed opposite to each other, the first surface 110a is used as the light emergent surface 100b, and the light incident portion 120 is connected to the second surface 110b. The first dot 111 is disposed on the second face 110b and around the light incident portion 120.
It can be understood that the light guide plate 100 used in this embodiment includes a main body portion 110, a light incident portion 120 and a first dot 111, where the main body portion 110 includes a first surface 110a and a second surface 110b disposed opposite to each other, the first surface 110a is used as the light emitting surface 100b, and the light incident portion 120 is connected to the second surface 110b; the first dot 111 is disposed on the second face 110b and around the light incident portion 120. In the subsequent module process, the light source 230 and the light guide plate 100 are prevented from being arranged on the same plane, the influence of the light source 230 on the frame width of the backlight module 200 is reduced, the narrow frame effect is realized, and the effect of improving the light emitting uniformity of the light guide plate 100 can be achieved.
In the present embodiment, the light incident portion 120 includes a bottom surface 120a, a first side surface 120b and a second side surface 120c disposed opposite to each other, the bottom surface 120a is connected to the first side surface 120b and the second side surface 120c, the bottom surface 120a and the second side surface 110b are disposed opposite to each other, and at least one of the bottom surface 120a, the first side surface 120b and the second side surface 120c serves as the light incident surface 100a.
It can be understood that, taking at least one of the bottom surface 120a, the first side surface 120b, and the second side surface 120c as the light incident surface 100a can avoid setting the light source 230 and the light guide plate 100 at the same horizontal plane, and reduce the influence of the light source 230 on the frame width of the backlight module 200, so as to achieve a narrow frame effect.
In the present embodiment, the density of the first dots 111 increases in the direction of the edge of the light guide plate 100 from the light incident portion 120.
It will be appreciated that when light strikes first dots 111, the light is refracted at various angles, so that the light at the dots is stronger. The intensity of light gradually decreases in the direction of the edge of the light guide plate 100 from the light incident portion 120, so that the intensity of light at the edge portion of the light guide plate 100 can be enhanced by increasing the density of the first dots 111, thereby improving the uniformity of light output from the light guide plate 100.
In this embodiment, the light guide plate 100 further includes second dots 121, and the second dots 121 are disposed on the bottom surface 120a.
It is understood that the second dots 121 disposed on the bottom surface 120a may improve the uniformity of the light emitted from the light guide plate 100.
In the present embodiment, the density of the second dots 121 decreases from the center of the light incident portion 120 toward the edge of the light incident portion 120.
It can be understood that the intensity of the light increases gradually from the center of the light incident portion 120 toward the edge of the light incident portion 120, and the density of the second dots 121 decreases gradually, so that the refraction of the light in the low density region of the second dots 121 can be reduced, and the uniformity of the display panel can be improved.
In the present embodiment, the density of the second dots 121 is lower than that of the first dots 111, and since the light intensity of the area of the light guide plate 100 corresponding to the second dots 121 is greater than that of the area of the light guide plate 100 corresponding to the first dots 111, setting the density of the second dots 121 lower than that of the first dots 111 can effectively improve the uniformity of the light output from the light guide plate 100.
In this embodiment, the bottom surface 120a is a convex arc shape.
It can be appreciated that the bottom surface 120a is configured to be in a convex arc shape, and the corresponding second dots 121 are also distributed in a convex arc shape on the bottom surface 120 a; the convex bottom surface 120a can provide more refraction angles for the incident light, so that the light has different refraction angles in the light guide plate 100, and the uniformity of the light emitted from the light guide plate 100 is improved.
Embodiment II,
Referring to fig. 2, the present embodiment provides a backlight module 200, including: the light guide plate 100, the frame 210, the reflective layer 220, and the light source 230 as described in the first embodiment. The frame 210 is provided therein with a first accommodating groove 211 and a second accommodating groove 212, the first accommodating groove 211 accommodating the main body portion 110, the second accommodating groove 212 accommodating the light incident portion 120. A receiving space 212a is provided between the light incident portion 120 and the groove wall of the second receiving groove 212. The reflective layer 220 is disposed under the light guide plate 100. The light source 230 is disposed in the accommodating space 212a.
It can be understood that the light source 230 is disposed in the accommodating space 212a, so that the light source 230 and the light guide plate 100 are prevented from being disposed on the same plane, and the influence of the light source 230 on the frame width of the backlight module 200 is reduced, thereby realizing a narrow frame effect.
In the present embodiment, the light source 230 is fixedly connected to the light guide plate 100.
It is understood that the means of securing includes bonding. The fixing connection of the light source 230 with the light guide plate 100 can reduce the gap between the light guide plate 100 and the light source 230 due to expansion, and can improve the incidence efficiency of the light source 230.
Alternatively, in the present embodiment, the reflective layer 220 includes a first reflective layer 221 and a second reflective layer 222, where the first reflective layer 221 is fixedly connected to the second surface 110b and surrounds the light incident portion 120. The second reflective layer 222 is fixedly connected to the bottom surface 120a.
It can be appreciated that the reflective layer 220 is fixedly connected with the light guide plate 100, so that no gap exists between the light guide plate 100 and the reflective layer 220, light is prevented from overflowing from the gap between the reflective layer 220 and the light guide plate 100, and light utilization efficiency is improved.
Optionally, in the present embodiment, the light source 230 includes a first light source 231 and a second light source 232 located in the accommodating space 212 a; the first light source 231 corresponds to the first side 120b, and the second light source 232 corresponds to the second side 120c.
It can be understood that the design manner of the first light source 231 corresponding to the first side 120b and the second light source 232 corresponding to the second side 120c can provide the light guide plate 100 with uniform and symmetrical light sources 230, so that the first light source 231 and the second light source 232 have uniform radiation ranges in the light guide plate 100, and the uniformity of the light emitted from the backlight module 200 is improved from the light source 230.
Alternatively, in the present embodiment, the light emitting surfaces of the first light source 231 and the second light source 232 are both directed toward the light incident portion 120 and the main body portion 110.
It can be understood that the light emitting surfaces of the first light source 231 and the second light source 232 face the light incident portion 120 and the main body portion 110, so that the light entering the light guide plate 100 has more initial angles, so that the light can be fully dispersed in the light guide plate 100 and the first dots 111 and the second dots 121, and the uniformity of the light emitted from the backlight module 200 is improved.
Optionally, in some embodiments, the backlight module 200 further includes an optical film 240, where the optical film 240 is disposed on the light guide plate 100, and the optical film 240 includes at least one of a diffusion sheet, a brightness enhancing sheet, a reflective polarizer sheet, or a prism sheet. It can be appreciated that the optical film 240 can further improve the uniformity, brightness and taste of the light emitted from the backlight module 200.
Third embodiment,
Referring to fig. 3, the present embodiment provides a backlight module 200, including: the light guide plate 100, the frame 210, the reflective layer 220, and the light source 230 as described in the first embodiment. The frame 210 is provided therein with a first accommodating groove 211 and a second accommodating groove 212, the first accommodating groove 211 accommodating the main body portion 110, the second accommodating groove 212 accommodating the light incident portion 120. A receiving space 212a is provided between the light incident portion 120 and the groove wall of the second receiving groove 212. The reflective layer 220 is disposed under the light guide plate 100. The light source 230 is disposed in the accommodating space 212a.
It can be understood that the light source 230 is disposed in the accommodating space 212a, so that the light source 230 and the light guide plate 100 are prevented from being disposed on the same plane, and the influence of the light source 230 on the frame width of the backlight module 200 is reduced, thereby realizing a narrow frame effect.
In the present embodiment, the light source 230 is fixedly connected to the light guide plate 100.
It is understood that the means of securing includes bonding. The fixing connection of the light source 230 with the light guide plate 100 can reduce the gap between the light guide plate 100 and the light source 230 due to expansion, and can improve the incidence efficiency of the light source 230.
In the present embodiment, the reflective layer 220 includes a first reflective layer 221 and a second reflective layer 222, the first reflective layer 221 being fixedly connected to the bottom of the first receiving groove 211; the second reflective layer 222 is fixedly coupled to the bottom of the second receiving groove 212.
It is understood that there is a space between the light guide plate 100 and the reflective layer 220, such as the bottom surface 120a and the second reflective layer 222. The reflective layer 220 is fixedly connected with the frame 210, so that the light has more divergent space in the backlight module 200, and the uniformity of the light emitted from the backlight module 200 is improved.
Optionally, in the present embodiment, the light source 230 includes a first light source 231 and a second light source 232 located in the accommodating space 212 a; the first light source 231 corresponds to the first side 120b, and the second light source 232 corresponds to the second side 120c.
It can be understood that the design manner of the first light source 231 corresponding to the first side 120b and the second light source 232 corresponding to the second side 120c can provide the light guide plate 100 with uniform and symmetrical light sources 230, so that the first light source 231 and the second light source 232 have a uniform radiation range in the light guide plate 100, and the uniformity of the light emitted from the backlight module 200 is improved from the light source 230.
Alternatively, in the present embodiment, the light emitting surfaces of the first light source 231 and the second light source 232 are both directed toward the light incident portion 120 and the main body portion 110.
It can be understood that the light emitting surfaces of the first light source 231 and the second light source 232 face the light incident portion 120 and the main body portion 110, so that the light entering the light guide plate 100 has more initial angles, so that the light can be fully dispersed in the light guide plate 100 and the first dots 111 and the second dots 121, and the uniformity of the light emitted from the backlight module 200 is improved.
Optionally, in some embodiments, the backlight module 200 further includes an optical film 240, where the optical film 240 is disposed on the light guide plate 100, and the optical film 240 includes at least one of a diffusion sheet, a brightness enhancing sheet, a reflective polarizer sheet, or a prism sheet. It can be appreciated that the optical film 240 can further improve the uniformity, brightness and taste of the light emitted from the backlight module 200.
Fourth embodiment,
Referring to fig. 4, the present embodiment provides a backlight module 200, including: the light guide plate 100, the frame 210, the reflective layer 220, and the light source 230 as described in the first embodiment. The frame 210 is provided therein with a first accommodating groove 211 and a second accommodating groove 212, the first accommodating groove 211 accommodating the main body portion 110, the second accommodating groove 212 accommodating the light incident portion 120. A receiving space 212a is provided between the light incident portion 120 and the groove wall of the second receiving groove 212. The reflective layer 220 is disposed under the light guide plate 100. The light source 230 is disposed in the accommodating space 212a.
It can be understood that the light source 230 is disposed in the accommodating space 212a, so that the light source 230 and the light guide plate 100 are prevented from being disposed on the same plane, and the influence of the light source 230 on the frame width of the backlight module 200 is reduced, thereby realizing a narrow frame effect.
In the present embodiment, the light source 230 is fixedly connected to the light guide plate 100.
It is understood that the means of securing includes bonding. The fixing connection of the light source 230 with the light guide plate 100 can reduce the gap between the light guide plate 100 and the light source 230 due to expansion, and can improve the incidence efficiency of the light source 230.
In the present embodiment, the reflective layer 220 includes a first reflective layer 221 and a second reflective layer 222, the first reflective layer 221 being fixedly connected to the bottom of the first receiving groove 211; the second reflective layer 222 is fixedly coupled to the bottom of the second receiving groove 212.
It is understood that there is a space between the light guide plate 100 and the reflective layer 220, for example, a space between the bottom surface 120a and the second reflective layer 222. The reflective layer 220 is fixedly connected with the frame 210, so that the light has more divergent space in the backlight module 200, and the uniformity of the light emitted from the backlight module 200 is improved.
Alternatively, in the present embodiment, the bottom surface 120a serves as the light incident surface 100a. The light source 230 comprises at least a bottom light source 231. The bottom light source 231 corresponds to the bottom surface 120a.
It can be understood that the bottom surface 120a is located at the middle position of the backlight module 200, and the bottom surface 120a is used as the light incident surface 100a to uniformly disperse the light of the light source 230 into the light guide plate 100, so as to improve the uniformity of the light emitted from the backlight module 200.
Alternatively, in the present embodiment, the light emitting surface of the bottom light source 231 faces the light incident portion 120 and the main body portion 110.
It can be understood that the light emitting surface of the bottom light source 231 faces the light incident portion 120 and the main body portion 110, so that the light entering the light guide plate 100 has more initial angles, so that the light can be fully dispersed in the light guide plate 100, the first dots 111 and the second dots 121, and the uniformity of the light emitted from the backlight module 200 can be improved.
Alternatively, in the present embodiment, a semi-reflective and semi-transmissive film 250 is provided on the light guide plate 100, and the semi-reflective and semi-transmissive film 250 is provided on the optical axis 230a of the bottom light source 231.
It can be understood that, in the present embodiment, the light intensity on the optical axis 230a of the bottom light source 231 is relatively high, and the semi-reflective and semi-transparent film 250 is disposed on the optical axis 230a of the bottom light source 231, so that part of the light on the optical axis 230a of the bottom light source 231 can be reflected, and the light intensity on the optical axis 230a of the bottom light source 231 is ensured, so as to improve the uniformity of the light emitted from the backlight module 200.
Optionally, in some embodiments, the backlight module 200 further includes an optical film 240, where the optical film 240 is disposed on the light guide plate 100, and the optical film 240 includes at least one of a diffusion sheet, a brightness enhancing sheet, a reflective polarizer sheet, or a prism sheet. It can be appreciated that the optical film 240 can further improve the uniformity, brightness and taste of the light emitted from the backlight module 200.
In some embodiments, the light source further comprises a first side light source corresponding to the first side 120b and a second side light source corresponding to the second side 120c.
It can be appreciated that the light source 230 can be provided uniformly and symmetrically for the light guide plate 100, so that the first side light source and the second side light source have uniform radiation ranges in the light guide plate 100, and the uniformity of the light emitted by the backlight module 200 is improved from the light source 230.
The above describes a light guide plate and a backlight module provided in the embodiments of the present application in detail, and specific examples are applied to describe the principles and embodiments of the present application, and the description of the above embodiments is only for helping to understand the method and core ideas of the present application; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (8)
1. A backlight module, comprising:
the light guide plate comprises a main body part, a light incidence part and first net points, wherein the main body part comprises a first surface and a second surface which are oppositely arranged, the first surface is used as a light emitting surface, and the light incidence part is connected with the second surface; the first mesh points are arranged on the second surface and around the light incidence part; the light incidence part comprises a bottom surface, a first side surface and a second side surface which are oppositely arranged, wherein the bottom surface is connected with the first side surface and the second side surface, the bottom surface and the second side surface are oppositely arranged, and at least one of the bottom surface, the first side surface and the second side surface is used as a light incidence surface;
a frame in which a first accommodation groove and a second accommodation groove are provided; the first accommodation groove accommodates the main body portion; the second accommodation groove accommodates the light incident portion; an accommodating space is arranged between the light incidence part and the groove wall of the second accommodating groove;
the reflecting layer is arranged below the light guide plate, comprises a first reflecting layer, is fixedly connected with the second surface and is arranged on the periphery of the light incidence part in a surrounding mode;
the light source is arranged in the accommodating space;
wherein the light source comprises a first light source and a second light source which are positioned in the accommodating space; the first light source corresponds to the first side face, and the second light source corresponds to the second side face; or/and the light source comprises a bottom light source, wherein the bottom light source corresponds to the bottom surface.
2. A backlight module according to claim 1, wherein the density of the first dots increases in a direction from the light incident portion toward the edge of the light guide plate.
3. The backlight module according to claim 1, wherein the light guide plate further comprises second dots, and the second dots are disposed on the bottom surface.
4. A backlight module according to claim 3, wherein the density of the second dots decreases from the center of the light incident portion toward the edge of the light incident portion.
5. A backlight module according to claim 1, wherein the bottom surface comprises a convex arc shape.
6. The backlight module according to claim 1, wherein the reflective layer comprises a first reflective layer and a second reflective layer; the first reflecting layer is fixedly connected with the second surface and is arranged on the periphery of the light incidence part in a surrounding manner; the second reflecting layer is fixedly connected with the bottom surface.
7. The backlight module according to claim 6, wherein the reflective layer comprises a first reflective layer and a second reflective layer, and the first reflective layer is fixedly connected to the bottom of the first accommodating groove; the second reflecting layer is fixedly connected to the bottom of the second accommodating groove.
8. A backlight module according to claim 6 or 7, wherein the light emitting surfaces of the first and second light sources are both directed toward the light incident portion and the main body portion.
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| CN202210613414.6A CN114924344B (en) | 2022-05-31 | 2022-05-31 | Light guide plate and backlight module |
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| CN202210613414.6A CN114924344B (en) | 2022-05-31 | 2022-05-31 | Light guide plate and backlight module |
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| CN114924344A CN114924344A (en) | 2022-08-19 |
| CN114924344B true CN114924344B (en) | 2024-03-29 |
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| CN202210613414.6A Active CN114924344B (en) | 2022-05-31 | 2022-05-31 | Light guide plate and backlight module |
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| CN115542611B (en) * | 2022-11-25 | 2023-03-17 | 惠科股份有限公司 | Backlight module and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201425632Y (en) * | 2009-04-27 | 2010-03-17 | 福建华映显示科技有限公司 | Lightweight light guide plate and backlight module thereof |
| TW201024818A (en) * | 2008-12-19 | 2010-07-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and backlight module |
| DE102012213192A1 (en) * | 2012-07-26 | 2014-01-30 | Dongguan Masstop Liquid Chrystal Display Co., Ltd. | Light source module has light emitting element and light guiding element that is provided with light incident surface facing light emitting element, where light emitting surface is connected to light incident surface |
| CN204345537U (en) * | 2015-01-15 | 2015-05-20 | 安徽彩晶光电有限公司 | A kind of LED light guide plate |
| CN107656398A (en) * | 2017-10-13 | 2018-02-02 | 惠州市华星光电技术有限公司 | Liquid crystal display and its backlight module |
| CN107991809A (en) * | 2017-12-26 | 2018-05-04 | 中航华东光电有限公司 | Narrow frame backlight module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI514018B (en) * | 2012-12-13 | 2015-12-21 | Hon Hai Prec Ind Co Ltd | Light guiding plate and backlight module using the same |
-
2022
- 2022-05-31 CN CN202210613414.6A patent/CN114924344B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201024818A (en) * | 2008-12-19 | 2010-07-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and backlight module |
| CN201425632Y (en) * | 2009-04-27 | 2010-03-17 | 福建华映显示科技有限公司 | Lightweight light guide plate and backlight module thereof |
| DE102012213192A1 (en) * | 2012-07-26 | 2014-01-30 | Dongguan Masstop Liquid Chrystal Display Co., Ltd. | Light source module has light emitting element and light guiding element that is provided with light incident surface facing light emitting element, where light emitting surface is connected to light incident surface |
| CN204345537U (en) * | 2015-01-15 | 2015-05-20 | 安徽彩晶光电有限公司 | A kind of LED light guide plate |
| CN107656398A (en) * | 2017-10-13 | 2018-02-02 | 惠州市华星光电技术有限公司 | Liquid crystal display and its backlight module |
| CN107991809A (en) * | 2017-12-26 | 2018-05-04 | 中航华东光电有限公司 | Narrow frame backlight module |
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