CN114114751A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN114114751A CN114114751A CN202111445408.6A CN202111445408A CN114114751A CN 114114751 A CN114114751 A CN 114114751A CN 202111445408 A CN202111445408 A CN 202111445408A CN 114114751 A CN114114751 A CN 114114751A
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
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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 provides a backlight module and a display device, the backlight module is provided with a first area and a second area located on the peripheral side of the first area, the first area comprises a first through hole penetrating along the direction perpendicular to the light-emitting surface of the backlight module, and the backlight module comprises a first light source and a second light source. The first light source is arranged in the second area and is positioned on one side of the first through hole along a first direction, and the first direction is intersected with the arrangement direction of the first light source; the second light source is arranged in the first area and is positioned on one side of the first through hole, which is far away from the first light source, along the first direction; the light emitting surface of the first light source is arranged towards the first through hole along the first direction, and the light emitting surface of the second light source is arranged towards the light emitting surface of the backlight module. The second light source is added on the basis of the first light source, light emitted by the second light source can deviate from one side of the first light source from the first through hole, namely, light intensity in a dark area of the display device is compensated, brightness of the area is improved, and a display effect is enhanced.
Description
Technical Field
The application relates to the technical field of display equipment, in particular to a backlight module and a display device.
Background
A Liquid Crystal Display (LCD) is a backlight Display device, has the advantages of being light, thin, energy-saving, and the like, and is widely applied to the field of digital communication.
Present display device is provided with usually and digs the hole region for photosensitive element such as camera under the setting screen, compare in other display areas, be located and dig the regional periphery of hole and can have the dark space, influence user's experience and feel.
Disclosure of Invention
The embodiment of the application provides a backlight module and a display device, and the display effect of the display device can be improved.
In a first aspect, an embodiment of the present application provides a backlight module, where the backlight module has a first region and a second region located on a peripheral side of the first region, the first region includes a first through hole penetrating along a direction perpendicular to a light exit surface of the backlight module, and the backlight module includes a first light source and a second light source.
The first light source is arranged in the second area and is positioned on one side of the first through hole along a first direction, and the first direction is intersected with the arrangement direction of the first light source; the second light source is arranged in the first area and is positioned on one side of the first through hole, which is far away from the first light source, along the first direction; the light emitting surface of the first light source is arranged towards the first through hole along the first direction, and the light emitting surface of the second light source is arranged towards the light emitting surface of the backlight module.
In a second aspect, an embodiment of the present invention provides a display device, including a display panel and a backlight module in any embodiment of the present application, where the display panel is stacked on a light exit side of the backlight module.
The backlight module and the display device provided by the embodiment of the application have the advantages that the second light source is added to the backlight module on the basis of the first light source, light emitted by the second light source can deviate from one side of the first light source from the first through hole, namely, the light intensity in a dark area of the display device is compensated, the brightness of the area is improved, and the display effect is enhanced. Meanwhile, in the embodiment of the application, the second light source is arranged in the first area, and the light emitting surface of the second light source is arranged towards the light emitting surface of the backlight module, so that the second light source is prevented from influencing the size of a non-display area in the display device, and the display effect is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure;
FIG. 2 is a schematic sectional view of a-a' in FIG. 1;
FIG. 3 is a schematic view of a further cross-sectional structure a-a' of FIG. 1;
FIG. 4 is a schematic cross-sectional view of a-a' of FIG. 1;
fig. 5 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure;
FIG. 6 is a schematic sectional view of b-b' in FIG. 5;
fig. 7 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure;
FIG. 8 is a schematic cross-sectional view of c-c' of FIG. 1;
fig. 9 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure;
FIG. 10 is a schematic cross-sectional view of d-d' in FIG. 9;
FIG. 11 is a schematic view of a further cross-sectional structure of d-d' in FIG. 9;
FIG. 12 is a schematic cross-sectional view of d-d' of FIG. 9;
fig. 13 is a schematic structural diagram of a display device according to an embodiment of the present application.
Description of the labeling:
1. a first light source; 11. a light emitting face of the first light source;
2. a second light source; 21. a light emitting face of the second light source;
3. a first through hole; 31. a first sub-via; 32. a second sub-via; 33. a close-up aperture; 34. a remote orifice;
4. a light guide plate; 41. a first side; 42. a second face; 43. a groove;
5. a frame structure;
6. a back plate;
7. a reflective sheet; 71. a first avoidance hole;
8. a connecting wire;
a1, first zone; a11, first subregion; a12, second subregion; a2, second zone;
x, a first direction; y, second direction.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the conventional display device, the display panel is mainly divided into two mainstream technologies of a liquid crystal display panel and an organic self-luminous display panel. In order to further improve the screen occupation ratio, a display technology, such as a "bang screen", a "water drop screen", and the like, in which holes are dug in a visible area and a front camera is arranged below the screen but cannot be normally displayed right above the camera, is available.
For the lcd panel, it is necessary to display images normally by the light source provided by the backlight module, and therefore, the backlight module becomes one of the key components of the lcd device. The backlight module is divided into a side-in type backlight module and a direct type backlight module according to different incident positions of the light source. The direct-type backlight module is configured to dispose a Light source, such as a Light Emitting Diode (LED), behind the liquid crystal panel to directly form a surface Light source for the liquid crystal panel. The side-in backlight module is formed by disposing a backlight LED Light bar (Light bar) at the edge of a back Plate at the rear side of a liquid crystal panel, wherein Light emitted by the LED Light bar enters a Light Guide Plate from a Light incident surface at one side of the Light Guide Plate (LGP), is reflected and diffused, then is emitted from a Light emitting surface of the Light Guide Plate, and then passes through an optical film group to form a surface Light source for the liquid crystal panel.
When the display device has a hole digging area, the hole digging treatment is also needed at the corresponding position of the light guide plate in the backlight module. At this moment, for the side-in type backlight module, due to the fact that the light guide plate is provided with the digging hole, light emitted by the light emitting source located at one side of the digging hole cannot be transmitted to the other side of the digging hole area, and therefore the phenomenon that the area on the other side of the digging hole is dark is caused, and experience of a user of the display device is affected.
To solve the above problem, in one aspect, a backlight module is provided in an embodiment of the present application, please refer to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a backlight module provided in an embodiment of the present application, and fig. 2 is a schematic sectional structural diagram of a-a' in fig. 1.
The backlight module comprises a first area A1 and a second area A2 located on the periphery of the first area A1, the first area A1 comprises a first through hole 3 penetrating along the direction vertical to the light-emitting surface of the backlight module, and the backlight module comprises a first light source 1 and a second light source 2.
The first light source 1 is arranged in the second area a2 and is located on one side of the first through hole 3 along a first direction X, and the first direction X intersects with the arrangement direction of the first light source 1; the second light source 2 is arranged in the first area a1 and is located on one side of the first through hole 3 departing from the first light source 1 along the first direction X; the light emitting surface 11 of the first light source is disposed toward the first through hole 3 along the first direction X, and the light emitting surface 21 of the second light source is disposed toward the light emitting surface of the backlight module. It should be noted that the first light source 1 and the second light source 2 in fig. 1 and fig. 2 are only schematic structures and do not limit the embodiments of the present application.
In the embodiment of the present invention, the first region a1 of the backlight module is matched with the display region of the corresponding display panel, and the second region a2 of the backlight module is matched with the non-display region of the corresponding display panel, wherein the size of the shape of the backlight module depends on the size of the shape of the corresponding display panel, which is not limited in the embodiment of the present invention.
The first through hole 3 is located in the first area a1, and the first through hole 3 corresponds to a position for disposing a photosensitive element such as a camera. The backlight module comprises a light guide plate 4, most of the light guide plate 4 is located in the first area a1, light rays emitted by the first light source 1 and the second light source 2 are transmitted to the outside of the backlight module through the light guide plate 4, wherein the first through hole 3 penetrates through the light guide plate 4.
The first light source 1 is a main light emitting source of the backlight module, and is located on one side of the first through hole 3 along a first direction X, and the first direction X is parallel to a light emitting surface of the backlight module. The first light source 1 is a linear light source and extends in the second area a2 along the second direction Y, and the light emitting surface 11 of the first light source is disposed toward the first through hole 3 along the first direction X, optionally, the first direction X is perpendicular to the second direction Y, and both are parallel to the light emitting surface of the backlight module.
The light emitted by the first light source 1 can propagate to other positions of the light guide plate 4 along the first direction X, and at this time, due to the existence of the first through hole 3, the light emitted by the first light source 1 is difficult to propagate to a side of the first through hole 3 departing from the first light source 1, so that the area is dark. This application embodiment has increased second light source 2 on first light source 1's basis, and second light source 2 is located one side that first through-hole 3 deviates from first light source 1 along first direction X, and the light that second light source 2 sent can compensate the light intensity that first through-hole 3 deviates from in the first side region of first light source 1, improves the luminance in this region, reinforcing display effect.
Meanwhile, the light emitting surface 21 of the second light source is arranged towards the light emitting surface of the backlight module in the embodiment of the application, and the light emitting surface 11 of the first light source is perpendicular to the light emitting surface 21 of the second light source, so that the size of the frame around the first through hole 3 can be reduced.
Specifically, the backlight module further includes a frame structure 5, the frame structure 5 is disposed around the periphery of the light guide plate 4, it is understood that the frame structure 5 is disposed in the non-display region of the display device, and a part of the frame structure 5 is located in the second region a2, and another part of the frame structure 5 is located in the first region a 1. Wherein the frame structure 5 in the first zone a1 is arranged around the first through opening 3.
For example, if the first light source 1 and the light emitting surface 21 of the second light source are arranged in parallel, the second light source 2 needs to be arranged corresponding to the frame structure 5 around the first through hole 3, and the existence of the second light source 2 affects the width of the frame structure 5. In this case, the width of the frame of the first through hole 3 on the side away from the first light source 1 is approximately in the range of 8mm to 12 mm.
The second light source 2 is arranged in the first area a1 and corresponds to the display area of the display device, and the light emitting surface 11 of the first light source is perpendicular to the light emitting surface 21 of the second light source, so that the size of the frame around the first through hole 3 is not affected by the second light source 2, that is, the size of the non-display area in the display device is not increased, which is beneficial to the narrow frame. At this time, the width of the frame of the first through hole 3 on the side departing from the first light source 1 is in the range of 4mm to 6 mm.
This application embodiment has increased second light source 2 on first light source 1's basis, and the light that second light source 2 sent can deviate from first light source 1 one side to first through-hole 3, and the light intensity in display device's the dark zone region compensates promptly, improves the luminance in this region, reinforcing display effect. Meanwhile, in the embodiment of the present application, the second light source 2 is disposed in the first area a1, and the light emitting surface 21 of the second light source is disposed toward the light emitting surface of the backlight module, so as to avoid the influence of the second light source 2 on the size of the non-display area of the display device, and further improve the display effect.
Referring to fig. 3, in some embodiments, the backlight module includes a light guide plate 4 and a back plate 6, the light guide plate 4 has a first surface 41 and a second surface 42 opposite to each other along a direction perpendicular to a light exit surface of the backlight module, the first surface 41 is located on a side of the second surface 42 facing away from the back plate 6, and the second light source 2 is disposed between the second surface 42 and the back plate 6.
The light guide plate 4 is used for guiding the scattering directions of the first light source 1 and the second light source 2 and ensuring the uniformity of the panel brightness, and the first surface 41 is located on one side of the light guide plate 4, which is far away from the back plate 6, namely the light emitting side of the light guide plate 4; the second surface 42 is located on one side of the light guide plate 4 close to the back plate 6, and light emitted from the second light source 2 enters the light guide plate 4 through the second surface 42 and exits the light guide plate 4 through the first surface 41. It can be understood that a plurality of optical films are stacked on one side of the light guide plate 4 facing away from the back plate 6 for improving the light emitting effect of the backlight module, which is not limited in the embodiment of the present application.
As shown in fig. 3, in some embodiments, the second surface 42 has a groove 43 concavely formed toward the first surface 41, the second light source 2 is at least partially located in the groove 43, and the light emitting surface 21 of the second light source faces the first surface 41.
The number of the second light sources 2 is multiple, the number of the second light sources 2 corresponds to the number of the grooves 43, the grooves 43 are arranged to define the positions of the second light sources 2, and at least parts of the second light sources 2 are located in the grooves 43, so that the overall thickness of the backlight module is reduced. Alternatively, the second light source 2 may be located entirely within the recess 43.
The light-emitting surface 21 of the second light source may face the first surface 41 in a direction perpendicular to the first surface 41, or may face the first surface 41 at an angle from the direction perpendicular to the first surface 41. That is, the light emitting surface 21 of the second light source may be parallel to the first surface 41, or may be inclined with respect to the first surface 41, which is not limited in the embodiment of the present application.
The light guide plate 4 in the embodiment of the present application is formed with a groove 43, and the second light source 2 is disposed in the groove 43, and the specific position of the second light source 2 is defined by the groove 43. Meanwhile, the arrangement of the groove 43 enables the structure between the second light source 2 and the light guide plate 4 to be more compact, so that the thickness of the backlight module is reduced, and the use hand feeling of the finally formed display device is improved.
Referring to fig. 4, in some embodiments, the backlight module includes a light guide plate 4, a back plate 6 and a reflective sheet 7, the reflective sheet 7 is sandwiched between the light guide plate 4 and the back plate 6, the reflective sheet 7 includes a first avoiding hole 71 penetrating along a direction perpendicular to a light exit surface of the backlight module, and the second light source 2 is at least partially located in the first avoiding hole 71.
The reflective sheet 7 can improve the brightness of the backlight module to a certain extent, and light leaking from the second surface 42 of the light guide plate 4 can be reflected back to the light guide plate 4 through the reflective sheet 7. In the embodiment of the present application, the direction perpendicular to the light emitting surface of the backlight module is the thickness direction of the reflector 7 itself, the first avoiding hole 71 penetrates through the reflector 7, the second light source 2 is at least partially located in the first avoiding hole 71, and the thickness of the backlight module can be reduced while the position of the second light source 2 is limited by the first avoiding hole 71. Alternatively, the first avoiding hole 71 of the reflective sheet 7 and the groove 43 of the light guide plate 4 may exist at the same time, and they are disposed correspondingly, and a part of the second light source 2 is located in the groove 43 and a part is located in the first avoiding hole 71.
Referring to fig. 5, in some embodiments, the number of the second light sources 2 is multiple, and the multiple second light sources 2 are arranged side by side in the first direction X.
The dark area of display device corresponds and forms one side that first through-hole 3 deviates from first light source 1 in backlight unit, and this application embodiment sets up second light source 2 in the position department corresponding with display device's dark area to set up a plurality of second light sources 2 side by side on first direction X, guarantee to have sufficient display brightness in display device's dark area regional scope, and then improve the display effect. Optionally, the plurality of second light sources 2 may also be arranged side by side in the second direction Y, that is, the second light sources 2 are arranged in an array on the side of the first through hole 3 departing from the first light source 1.
In some embodiments, the number of the first through holes 3 is multiple, the multiple first through holes 3 are at least partially non-overlapped in the first direction X, and the second light source 2 is located on a side of any one of the first through holes 3 facing away from the first light source 1; at least part of the light emitted by the second light source 2 can be transmitted to the side of the other first through holes 3 departing from the first light source 1.
Different first through holes 3 may be used to arrange different photosensitive elements, alternatively, a plurality of first through holes 3 are arranged side by side in the second direction Y. In the embodiment of the present application, the second light source 2 is not disposed corresponding to the plurality of first through holes 3, but is disposed only on one side of one of the first through holes 3 departing from the first light source 1, and the light guiding effect of the light guide plate 4 is utilized to transmit the light emitted by the second light source 2 to one side of the other first through holes 3 departing from the first light source 1, so as to improve the display effect of the other first through holes 3 departing from one side of the first light source 1.
The embodiment of the application comprises a plurality of first through holes 3, the second light source 2 is only arranged on one side of one of the first through holes 3, and light emitted by the second light source 2 is transmitted to the positions of the other first through holes 3 by utilizing the light guide effect of the light guide plate 4, so that the display effect is improved, the arrangement quantity of the second light sources 2 is reduced, and the energy consumption of the backlight module is reduced.
Referring to fig. 5 and 6, in some embodiments, the first through hole 3 includes a first sub-through hole 31 and a second sub-through hole 32, and the second light source 2 is located at a side of the first sub-through hole 31 facing away from the first light source 1; at least part of the light emitting surface 21 of the second light source is obliquely arranged towards the second sub through hole 32, so that at least part of light can be transmitted to one side, away from the first light source 1, of the second sub through hole 32.
In the embodiment of the present application, the second light source 2 is only disposed on one side of the first sub through hole 31 departing from the first light source 1, and then the light emitting surface 21 of at least part of the second light source is inclined toward the second sub through hole 32, so that the light emitted by the second light source 2 is easier to propagate to one side of the second sub through hole 32 departing from the first light source 1. Alternatively, the second sub through hole 32 and the first sub through hole 31 are arranged side by side along the second direction Y, and the plurality of second light sources 2 located at the side close to the second sub through hole 32 along the second direction Y are arranged obliquely.
It should be noted that, in the embodiment of the present application, only the first through hole 3 includes at least two through holes, namely, the first sub through hole 31 and the second sub through hole 32, but the backlight module may include any number of through holes besides the first sub through hole 31 and the second sub through hole 32, which is not limited in the embodiment of the present application.
Referring to fig. 7, in some embodiments, the first through hole 3 includes a short distance hole 33 and a long distance hole 34, a distance between the short distance hole 33 and the first light source 1 in the first direction X is smaller than a distance between the long distance hole 34 in the first direction X, and the second light source 2 is disposed on a side of the short distance hole 33 away from the first light source 1.
In the first direction X, the short-distance hole 33 is closer to the first light source 1 than the long-distance hole 34, so that the area of the short-distance hole 33 on the side away from the first light source 1 is larger, that is, in the formed display device, the area of the dark area corresponding to the short-distance hole 33 is larger and the brightness is lower. This application embodiment sets up second light source 2 in one side that short distance hole 33 deviates from first light source 1, thereby improve short distance hole 33 and deviate from the luminance of first light source 1 one side, and through the leaded light effect to the regulation or the light guide plate 4 of the 2 light emitting areas of second light source, make the light that second light source 2 sent can propagate to one side that long distance hole 34 deviates from first light source 1, and then when reducing the energy consumption, make short distance hole 33 and the luminance of two dark areas that long distance hole 34 corresponds respectively can be close roughly, improve display effect.
As shown in fig. 7, in some embodiments, the first region a1 includes a first sub-region a11 and a second sub-region a12 arranged side by side along the first direction X, the first sub-region a11 is located on a side of the second sub-region a12 facing away from the first light source 1, and the near hole 33 and the far hole 34 are both located within the second sub-region a 12; wherein at least part of the second light sources 2 is located within the first sub-area a 11.
The first sub-zone a11 and the second sub-zone a12 are arranged side by side along the first direction X to jointly constitute the first zone a1, and the near hole 33 and the far hole 34 are both located within the second sub-zone a 12. As can be seen from the figure, the dark region corresponding to the far aperture 34 is located entirely within the first sub-region a11, while the dark region corresponding to the near aperture 33 is located partly within the first sub-region a11 and partly within the second sub-region a 12.
As can be seen from the above embodiments, the second light source 2 is disposed on a side of the short-distance hole 33 away from the first light source 1. On the basis, in the embodiment of the present application, in order to ensure that the light emitted from the second light source 2 can be transmitted to the side of the remote hole 34 away from the first light source 1, at least a part of the second light source 2 is disposed in the first sub-area a11, so that the light emitted from the second light source 2 can be transmitted to the side of the remote hole 34 away from the first light source 1 more easily. Optionally, at least part of the second light source 2 is located within the second sub-area a 12.
In some embodiments, the second light source 2 comprises a plurality of micro light emitting diodes.
Compared with other light source forms, the micro light-emitting diode has smaller size, can provide more uniform light-emitting effect, and can further improve the darkening problem of the finally formed display device. In addition, referring to fig. 8, since the micro light emitting diode has a more uniform light emitting effect, the light guide plate 4 above the second light source 2 can be removed, which is not limited in the embodiment of the present application.
Referring to fig. 9, in some embodiments, the backlight module further includes a connecting line 8 extending along the first direction X, and the connecting line 8 is used for electrically connecting the first light source 1 and the second light source 2.
The first light source 1 and the second light source 2 are electrically connected and arranged, so that the first light source 1 and the second light source 2 can jointly use the same driving source to drive to emit light without additionally arranging other driving sources, the size of the second area A2 is indirectly reduced, and the use hand feeling of the finally formed display device is improved.
Referring to fig. 10 to 12, in some embodiments, the backlight module includes a light guide plate 4, a reflective sheet 7 and a back plate 6 stacked together, and at least a portion of the connecting wires 8 is located between the light guide plate 4 and the reflective sheet 7; or at least part of the connecting line 8 is positioned between the reflecting sheet 7 and the back plate 6; or at least part of the connecting line 8 is located on the side of the back plate 6 facing away from the reflective sheet 7.
As shown in fig. 10, at least a portion of the connecting lines 8 is located between the light guide plate 4 and the reflective sheet 7, that is, at least a portion of the connecting lines 8 is located between the second surface 42 and the reflective sheet 7, and the connecting lines 8 in the embodiment of the present application can also play a role of reflecting light rays in addition to playing a role of electric conduction. Specifically, a portion of the light leaking from the second surface 42 of the light guide plate 4 reaches the connection line 8, and the connection line 8 is usually made of metal, and reflects the light back into the light guide plate 4, thereby improving the brightness of the backlight module.
As shown in fig. 11, at least a portion of the connection line 8 is located between the reflective sheet 7 and the back plate 6, a corresponding via hole needs to be disposed on the reflective sheet 7, and the connection line 8 connected to the second light source 2 reaches between the reflective sheet 7 and the back plate 6 through the via hole on the reflective sheet 7, and then extends along the first direction X to achieve mutual connection therebetween.
As shown in fig. 12, at least a portion of the connecting line 8 is located on a side of the back plate 6 away from the reflective sheet 7, corresponding via holes need to be formed in both the reflective sheet 7 and the back plate 6, and the connecting line 8 connected to the second light source 2 passes through the via holes to reach the side of the back plate 6 away from the reflective sheet 7, and then extends along the first direction X to connect the back plate and the back plate to each other.
In a second aspect, please refer to fig. 13, an embodiment of the present application provides a display device, which includes the backlight module according to any one of the embodiments and a display panel, wherein the display panel is stacked on a light emitting side of the backlight module.
Fig. 13 illustrates a display device by taking a mobile phone as an example, but it should be understood that the display device provided in the embodiment of the present invention may be other display devices having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto.
In addition, the display device provided in the embodiment of the present application has the beneficial effects of the backlight module provided in the embodiment of the present application, and specific reference may be made to the specific description of the backlight module in the foregoing embodiments, which is not repeated herein.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the corresponding processes in the foregoing method embodiments may be referred to for replacement of the other connection manners described above, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.
Claims (13)
1. A backlight module is characterized in that the backlight module is provided with a first area and a second area located on the peripheral side of the first area, the first area comprises a first through hole penetrating along the direction perpendicular to the light-emitting surface of the backlight module, and the backlight module comprises:
the first light source is arranged in the second area and is positioned on one side of the first through hole along a first direction, and the first direction is intersected with the arrangement direction of the first light source;
the second light source is arranged in the first area and is positioned on one side of the first through hole, which is far away from the first light source, along the first direction;
the light emitting surface of the first light source faces the first through hole in the first direction, and the light emitting surface of the second light source faces the light emitting surface of the backlight module.
2. The backlight module according to claim 1, further comprising a light guide plate and a back plate, wherein the light guide plate has a first surface and a second surface opposite to each other in a direction perpendicular to a light emitting surface of the backlight module, the first surface is located on a side of the second surface facing away from the back plate, and the second light source is disposed between the second surface and the back plate.
3. The backlight module according to claim 2, wherein the second surface has a recess formed by recessing toward the first surface, the second light source is at least partially located in the recess, and a light emitting surface of the second light source faces the first surface.
4. The backlight module according to claim 1, further comprising a light guide plate, a back plate and a reflector plate, wherein the reflector plate is sandwiched between the light guide plate and the back plate, the reflector plate comprises a first avoiding hole penetrating along a direction perpendicular to a light exit surface of the backlight module, and at least a portion of the second light source is located in the first avoiding hole.
5. The backlight module according to claim 1, wherein the second light sources are plural, and the plural second light sources are arranged side by side in the first direction.
6. The backlight module according to claim 1, wherein the number of the first through holes is plural, the plural first through holes are at least partially non-overlapped in the first direction, and the second light source is located at a side of any one of the first through holes facing away from the first light source;
at least part of the light emitted by the second light source can be transmitted to one side of the other first through holes, which is far away from the first light source.
7. The backlight module according to claim 6, wherein the first through hole comprises a first sub-through hole and a second sub-through hole, and the second light source is located at a side of the first sub-through hole facing away from the first light source;
at least part of the light emitting surface of the second light source is obliquely arranged towards the second sub through hole, so that at least part of light can be transmitted to one side, deviating from the first light source, of the second sub through hole.
8. The backlight module according to claim 6, wherein the first through holes comprise a near hole and a far hole, the distance between the near hole and the first light source in the first direction is smaller than the distance between the far hole and the first light source in the first direction, and the second light source is disposed at a side of the near hole facing away from the first light source.
9. The backlight module according to claim 8, wherein the first region comprises a first sub-region and a second sub-region arranged side by side along a first direction, the first sub-region is located on a side of the second sub-region facing away from the first light source, and the near hole and the far hole are both located in the second sub-region;
wherein at least part of the second light source is located in the first sub-area.
10. The backlight module as claimed in claim 1, wherein the second light source comprises a plurality of micro light emitting diodes.
11. The backlight module according to claim 1, further comprising a connecting line extending along the first direction, the connecting line electrically connecting the first light source and the second light source.
12. The backlight module as claimed in claim 11, further comprising a light guide plate, a reflective sheet and a back plate stacked together,
at least part of the connecting lines are positioned between the light guide plate and the reflecting sheet;
or at least part of the connecting line is positioned between the reflector plate and the back plate;
or at least part of the connecting lines are positioned on the side of the back plate, which is far away from the reflector plate.
13. A display device, comprising:
a backlight module according to any one of claims 1 to 12;
and the display panel is arranged on the light emergent side of the backlight module in a stacked mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111445408.6A CN114114751B (en) | 2021-11-30 | 2021-11-30 | Backlight module and display device |
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| CN202111445408.6A CN114114751B (en) | 2021-11-30 | 2021-11-30 | Backlight module and display device |
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| CN114114751B CN114114751B (en) | 2023-12-08 |
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| CN114740654A (en) * | 2022-04-20 | 2022-07-12 | 武汉华星光电技术有限公司 | Display device |
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| CN114114751B (en) | 2023-12-08 |
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