CN114660700A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN114660700A CN114660700A CN202210315885.9A CN202210315885A CN114660700A CN 114660700 A CN114660700 A CN 114660700A CN 202210315885 A CN202210315885 A CN 202210315885A CN 114660700 A CN114660700 A CN 114660700A
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- light guide
- backlight module
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
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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
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- 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 application provides a backlight module and a display device. The backlight module includes: the back plate comprises a back plate main body and a side plate connected with the edge of the back plate main body, and the back plate main body and the side plate jointly form an accommodating cavity; a reflection sheet disposed in the accommodation cavity; the light bar is arranged on the side plate; the light guide plate is arranged on one side, away from the back plate main body, of the reflector plate, a convex angle is arranged on one side, close to the light bar, of the light guide plate, the convex angle is used for being clamped with the back plate, and one side, away from the light bar, of the light guide plate is clamped with the back plate through a fixing piece; a first adhesive layer disposed between the reflective sheet and the back plate main body; and a second adhesive layer disposed between the reflective sheet and the light guide plate.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a backlight module and a display device.
Background
With the continuous development of display technology and the heat of fire in the automobile market, the requirements of large-screen central control and instrument panels are increasing. Nowadays, the vehicle-mounted display device gradually moves to a plurality of forms such as large screen, high definition, narrow frame and the like.
The vehicle vibrates during running, so that the vehicle-mounted display device is in a vibration environment. Therefore, the reliability test of the in-vehicle display device is more demanding. In a related art, a backlight module of a vehicle-mounted display device includes a back plate, a light guide plate, and a light bar. The light guide plate is fixed on the back plate, and the lamp strip is arranged on the side face of the back plate. When the high temperature test of reliability experiment, the situation of expend with heat and contract with cold can take place for the light guide plate to cause the light guide plate to rock for the backplate when vibrating, and then probably bump back and forth or extrude the lamp strip of side, make the lamp strip impaired, backlight unit became invalid.
Disclosure of Invention
An object of the embodiment of the application is to provide a backlight unit and display device to do benefit to and reduce the light guide plate and cause the probability that the lamp strip damaged because of collision back and forth or extrusion lamp strip, and then do benefit to the reliability that improves backlight unit.
The application provides a backlight module in a first aspect, which comprises a back plate, wherein the back plate comprises a back plate main body and a side plate connected with the edge of the back plate main body, and the back plate main body and the side plate form an accommodating cavity together; a reflection sheet disposed in the accommodation cavity; the light bar is arranged on the side plate; the light guide plate is arranged on one side, away from the back plate main body, of the reflector plate, a convex angle is arranged on one side, close to the light bar, of the light guide plate, the convex angle is used for being clamped with the back plate, and one side, away from the light bar, of the light guide plate is clamped with the back plate through a fixing piece; a first adhesive layer disposed between the reflective sheet and the back plate main body; and a second adhesive layer disposed between the reflective sheet and the light guide plate.
The backlight unit of this application embodiment is favorable to reducing the light guide plate and makes a round trip to rock and cause the probability that the lamp strip damaged through carrying on multiple fixed to the light guide plate, and then does benefit to the reliability that improves backlight unit. The light guide plate passes through the convex angle joint at the backplate of mounting and light guide plate to carry out the first heavy fixed protection to the light guide plate. The embodiment of the application further performs second heavy fixed protection on the light guide plate. Specifically, a first adhesive layer is arranged between the reflector plate and the back plate main body, and a second adhesive layer is arranged between the reflector plate and the light guide plate, so that the light guide plate is fixed on the back plate main body through the two adhesive layers. Through setting up the fixed safeguard measure of duality to the light guide plate, be favorable to improving the fastness of light guide plate at the backplate, reduce because of the light guide plate is not hard up and make a round trip to extrude, striking lamp strip causes the probability that the lamp strip damaged, and then be favorable to improving backlight unit's reliability.
The backlight module according to the embodiment of the present application may further have the following additional technical features:
in some embodiments of the present application, the second adhesive layer is saw-toothed in an orthogonal projection of the back sheet.
In some embodiments of this application, the mounting is L type block rubber, one side that the light guide plate kept away from the lamp strip through L type block rubber with backplate interference fit.
In some embodiments of the present application, the side panel comprises a first section, a second section connected to the first section, a third section disposed opposite the first section, and a fourth section disposed opposite the second section, and the light bar comprises a first portion and a second portion, the first portion being proximate to a surface of the first section on a side thereof proximate to the third section.
In some embodiments of the present application, an opening is provided at a connection portion of the first section and the second section, and the second portion extends out of the back plate through the opening and is closely attached to a surface of the second section on a side away from the fourth section.
In some embodiments of the present application, a groove is disposed at an edge of the back plate main body close to the second section, a notch is disposed at a position of the second section corresponding to the groove, the second portion is closely attached to a surface of the second section close to one side of the fourth section, and the second portion extends out of the back plate through the groove and the notch.
In some embodiments of the present application, a groove is disposed at an edge of the back plate main body close to the second section, a position of the second section corresponding to the groove is protruded toward a direction deviating from the fourth section, the second portion is closely attached to a surface of the second section close to one side of the fourth section, and the second portion extends out of the back plate through the groove.
In some embodiments of the present application, the second portion includes a first portion abutting a side surface of the second section facing away from the fourth section and a folded portion folded toward the back plate body, the folded portion abutting a side surface of the back plate body facing away from the light guide plate.
In some embodiments of the present application, the backlight module further includes a light shielding layer covering the first portion.
In some embodiments of the present application, the convex angle is located on a side of the light guide plate near the first section, and the convex angle is provided with a rounded corner.
In some embodiments of the present application, a side of the first portion proximate the lobe is provided with a protective layer.
The second aspect of the present application provides a display device, including the backlight module of the first aspect. Backlight unit is favorable to reducing the light guide plate and makes a round trip to rock and cause the probability that the lamp strip damaged through carrying out multiple fixed to the light guide plate, and then does benefit to the reliability that improves backlight unit and display device.
Of course, it is not necessary for any product or method of the present application to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is also obvious for a person skilled in the art to obtain other embodiments according to the drawings.
FIG. 1 is a top view of a backlight module according to an embodiment of the present disclosure;
FIG. 2 is a schematic partial cross-sectional view of a backlight module according to an embodiment of the present disclosure;
FIG. 3 is a schematic front view of a second adhesive layer according to an embodiment of the present disclosure;
fig. 4 is a schematic view of a light bar outlet structure according to an embodiment of the present application;
fig. 5 is a schematic view of another light bar outlet structure according to an embodiment of the present application;
fig. 6 is a schematic structural view illustrating a second portion of the light bar extending out of the back plate according to the embodiment of the present application;
fig. 7 is a schematic structural diagram of a light-shielding layer according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
With the continuous development of display technology and the heat of fire in the automobile market, the requirements of large-screen central control and instrument panels are increasing. Nowadays, the vehicle-mounted display device gradually moves to a plurality of forms such as large screen, high definition, narrow frame and the like.
The vehicle vibrates during running, so that the vehicle-mounted display device is in a vibration environment, and the reliability experiment of the vehicle-mounted display device is more severe. When the high temperature test of reliability experiment, the situation of expend with heat and contract with cold can take place for the light guide plate to cause the light guide plate to rock for the backplate when vibrating, and then probably bump back and forth or extrude the lamp strip of side, make the lamp strip impaired, backlight unit became invalid.
In view of the above problems, the present application provides a backlight module 100 in a first aspect. As shown in fig. 1 and 2, the backlight module 100 includes a back plate 110, a reflective sheet 120, a light bar 130, a light guide plate 140, a first adhesive layer 150, and a second adhesive layer 160. The back plate 110 includes a back plate main body 111 and a side plate 112 connected to an edge of the back plate main body 111, and the back plate main body 111 and the side plate 112 together form a receiving cavity 170. The reflective sheet 120 is disposed in the receiving cavity 170, and the light bar 130 is disposed on the side panel 112. The light guide plate 140 is disposed on a side of the reflective sheet 120 away from the rear panel main body 111, a convex angle 141 is disposed on a side of the light guide plate 140 close to the light bar 130, the convex angle 141 is used for being clamped with the rear panel 110, and a side of the light guide plate 140 away from the light bar 130 is clamped with the rear panel 110 through a fixing member 142. The first adhesive layer 150 is disposed between the reflective sheet 120 and the back plate body 111; the second adhesive layer 160 is disposed between the reflective sheet 120 and the light guide plate 140.
In the embodiment of the present application, the back plate 110 of the backlight module 100 has a receiving cavity for receiving the reflective sheet 120, the light bar 130, the light guide plate 140, and the like. The reflective sheet 120 and the light guide plate 140 are stacked on the back plate main body 111 of the back plate 110, the reflective sheet 120 is located between the light guide plate 140 and the back plate main body 111, and the light bar 130 is mounted on the side plate 112 of the back plate 110. That is to say, the backlight module 100 of the embodiment of the present application is a side-in type backlight module, and the side-in type backlight module is favorable for reducing the power consumption of the display device. The light bar 130 is used for emitting visible light, and generally, the light bar 130 includes a substrate 1311 and a plurality of light emitters 1312 electrically connected to the substrate 1311, and the light emitters 1312 may be LEDs, mini-LEDs, Micro-LEDs, or the like. The light guide plate 140 is used for converting the point light source of the light bar 130 into a surface light source, and the reflective sheet 120 is used for reflecting part of the light bar 130 and transmitting the part of the light to the light guide plate 140, so as to improve the utilization rate of the light bar 130. One side surface of the reflective sheet 120 close to the light guide plate 140 is a reflective surface. Since the light bar 130 is disposed on the side plate 112 and the light guide plate 140 is disposed on the back plate main body 111, a surface of the light guide plate 140 facing the light bar 130 is an incident surface 143, and a surface of the light guide plate 140 away from the reflector 120 is an exit surface 144. The light bars 130 of the side panels 112 emit light with desired brightness, and the light enters the light guide plate 140 through the incident surface 143 and then exits from the exit surface 144, so that the point light sources on the sides are converted into surface light sources.
The backlight module 100 of the embodiment of the application is favorable for reducing the probability that the light guide plate 140 shakes back and forth to cause the damage of the light bar 130 by performing multiple fixation on the light guide plate 140, and further favorable for improving the reliability of the backlight module 100. The light guide plate 140 is clamped to the back plate 110 by the fixing member 142 and the convex angle 141 of the light guide plate 140, so that the light guide plate 140 is protected by first fixing. Specifically, one side of the light guide plate 140 close to the light bar 130 is provided with a convex angle 141, the side plate 112 of the back plate 110 is provided with a mounting groove 145 at a position corresponding to the convex angle 141, and one side of the light guide plate 140 can be clamped on the back plate 110. The side of the light guide plate 140 opposite to the side where the convex angle 141 is located is clamped with the back plate 110 by a fixing member 142. Thus, the light guide plate 140 is primarily mounted on the rear plate 110. The fixing member 142 may be a double-sided adhesive tape with adhesive, and the light guide plate 140 is adhered to the side plate 112 of the back plate 110 through the double-sided adhesive tape; the fixing member 142 may be a rubber block having a certain shape, and the light guide plate 140 is engaged with the side plate 112 of the back plate 110 through the rubber block.
The light guide plate 140 is usually made of Polycarbonate (PC), and expands at a high temperature, and after the light guide plate 140 recovers to a normal temperature, the light guide plate 140 also has a certain shrinkage in size compared to the original one, so that the light guide plate 140 and the back plate 110 may loosen, and after vibration, the light guide plate 140 may extrude and impact the light bar 130, so that the light bar is damaged. Therefore, the embodiment of the present application further performs a second re-fixing protection on the light guide plate 140. Specifically, as shown in fig. 2, a first adhesive layer 150 is disposed between the reflective sheet 120 and the back plate main body 111, and a second adhesive layer 160 is disposed between the reflective sheet 120 and the light guide plate 140, so that the light guide plate 140 is also fixed on the back plate main body 111 by the two adhesive layers. Through setting up the dual fixed safeguard measure to light guide plate 140, be favorable to improving the fastness of light guide plate 140 at backplate 110, reduce because of light guide plate 140 is not hard up and make a round trip to extrude, strike lamp strip 130 and cause the probability that lamp strip 130 damaged, and then be favorable to improving backlight unit's reliability.
In some embodiments of the present application, the first adhesive layer 150 and the second adhesive layer 160 may each be a black and white double-sided tape. On one hand, the black and white double-sided adhesive tape is common in the display field, which is beneficial to reducing the cost, and on the other hand, the black and white double-sided adhesive tape has good viscosity, which is beneficial to improving the firmness of the light guide plate 140 on the back plate 110.
Further, as shown in fig. 3, the orthographic projection of the second adhesive layer 160 on the back plate 110 is zigzag. Generally, the white surface of the black-and-white double-sided adhesive tape has poor light scattering ability, and light passing through the black-and-white double-sided adhesive tape may be reflected by the adhesive tape, so that the light and dark are not uniform on the emergent surface 144. Therefore, the orthogonal projection of the second adhesive layer 160 on the back plate 110 in the embodiment of the present application is zigzag. By the arrangement, the adhesive tape is not in a straight strip shape with equal width any more, the contact area between the adhesive tape and light is reduced, the reflection of the adhesive tape on the light is reduced, and the adverse effect of the second adhesive layer 160 on the display effect is reduced.
As shown in fig. 1, in some embodiments of the present application, the fixing element 142 is an L-shaped rubber block 146, and a side of the light guide plate 140 away from the light bar 130 is in interference fit with the back plate 110 through the L-shaped rubber block. The rubber block 146 is used as the fixing member 142, which is beneficial to facilitating the installation and fixation of the light guide plate 140 and the processing of the fixing member 142.
In some embodiments of the present application, as shown in fig. 4, the side plate 112 includes a first section 1121, a second section 1122 connected to the first section 1121, a third section 1123 disposed opposite to the first section 1121, and a fourth section 1124 disposed opposite to the second section 1122, and the light bar 130 includes a first portion 131 and a second portion 132, where the first portion 131 is closely attached to a surface of the first section 1121 near the third section 1123.
In the embodiment of the present application, the side plate 112 has four sections connected around the rear plate body 111, the four sections substantially defining a square-shaped receiving frame and substantially conforming to the shape of the light guide plate 140. Therefore, the back plate 110 can be utilized to the maximum, which is beneficial to improving the utilization rate of the accommodating cavity 170 of the back plate 110, and further beneficial to reducing the volume of the backlight module 100.
The first portion 131 of the light bar 130 can generally include a substrate 1311, and can also include a plurality of light emitters 1312, such as LEDs, disposed on the substrate 1311. The first portion 131 may be adhered to the surface of the first section 1121 near the third section 1123 side by double-sided heat-dissipating glue. Thus, the first portion 131 of the light bar provides incident light to the light guide plate 140 at the side edge, and the heat is transferred to the first portion 1121 through the double-sided heat dissipation adhesive and then transferred to the back plate 110 for heat dissipation, thereby facilitating to improve the service life of the light bar 130. The second portion 132 of the light bar can generally include a substrate 1311 and a connection harness, etc., and the second portion 132 generally needs to extend outside the rear panel 110 to connect the connection harness with an external power source to supply power to the light bar 130.
In the related art, the second portion of the light bar is closely attached to the inner surface of the side plate close to the accommodating cavity, and the end of the second portion extends out of the back plate through the wire outlet in the back plate main body after being folded, so that the second portion is connected with a component outside the back plate. This structure has the following problems: the thickness of the lamp strip that commonly uses is about 0.17mm, and after folding, because the folding nature of lamp strip material, the folding department thickness of second portion tip is thicker, is about 0.5 mm. And the fold is confined to the outlet. When the light guide plate rocks back and forth due to looseness, the light guide plate can collide with the folding part of the light bar directly due to the fact that the thickness of the folding part far exceeds the thickness of the light bar, and therefore the folding part of the light bar is damaged, and the service life of the backlight module is influenced.
Therefore, the present application also provides various embodiments in which the second portion 132 of the light bar 130 extends out of the back plate 110, so as to reduce the probability of the occurrence of the condition that the light guide plate 140 collides with the folded portion of the second portion 132 of the light bar 130, thereby further improving the service life of the backlight module 100.
As shown in fig. 1, in some embodiments of the present application, an opening 1125 is disposed at a connection point of the first segment 1121 and the second segment 1122, and the second portion 132 protrudes out of the back plate 110 through the opening 1125 and is closely attached to a surface of the second segment 1122 on a side facing away from the fourth segment 1124. In the embodiment of the present application, the second portion 132 directly extends out of the back plate 110 through the opening 1125 at the corner position of the first section 1121 and the second section 1122, and the second portion 132 is tightly attached to the outer surface of the second section 1122. By such an arrangement, the second portion 132 of the light bar 130 is separated from the light guide plate 140 by the second section 1122, so that the light guide plate 140 cannot contact the second portion 132 of the light bar 130, and it is easy to understand that the light guide plate 140 cannot contact the folded part of the second portion 132, thereby further reducing the damage condition of the light bar 130, and further improving the reliability of the backlight module 100.
In other embodiments of the present application, as shown in fig. 4, a groove 1111 is disposed at an edge of the back plate main body 111 near the second section 1122, a notch 1126 is disposed at a position of the second section 1122 corresponding to the groove 1111, the second portion 132 is closely attached to a surface of the second section 1122 near the fourth section 1124, and the second portion 132 extends out of the back plate 110 through the groove 1111 and the notch 1126. In the embodiment of the present application, the second portion 132 of the light bar 130 is still tightly attached to the surface of the second section 1122 near the fourth section 1124. However, the present application provides an improvement in outlets over the related art. Specifically, in the embodiment of the present application, the outlet includes the groove 1111 of the back plate main body 111 and the notch of the second section 1122, that is, the outlet is a gap. Thus, when the second portion 132 is folded over the outlet to extend beyond the back plate 110, the outlet does not provide a space limitation for the fold, although the fold 133 increases in thickness. Even if the folded part 133 is extruded and collided by the light guide plate 140, the folded part 133 can freely move in the direction away from the gap, so that the condition that the folded part 133 of the light bar 130 is damaged by the light guide plate 140 is further favorably reduced, and the reliability of the backlight module 100 is favorably improved.
In other embodiments of the present application, as shown in fig. 5, a groove 1111 is disposed at an edge of the back plate main body 111 close to the second section 1122, a position of the second section 1122 corresponding to the groove 1111 is protruded in a direction away from the fourth section 1124, the second portion 132 is closely attached to a surface of the second section 1122 close to the fourth section 1124, and the second portion 132 extends out of the back plate 110 through the groove 1111. In the embodiment of the present application, the second portion 132 of the light bar 130 is still tightly attached to the surface of the second section 1122 near the fourth section 1124. However, the present application provides an improvement in outlets over the related art. Specifically, in the embodiment of the present application, the outlet includes a groove 1111, and a position of the second section 1122 corresponding to the groove 1111 is convex in a direction away from the fourth section 1124. That is to say, the direction of the outlet facing away from the fourth section 1124 is enlarged in the embodiment of the present application, so that the folded portion 133 of the second portion 132 has a larger placing space at the outlet, thereby being beneficial to further reducing the condition that the folded portion 133 of the light bar 130 is damaged by the light guide plate 140, and further being beneficial to improving the reliability of the backlight module 100.
In some embodiments of the present application, as shown in fig. 1 and 6, fig. 6 is a schematic structural diagram illustrating that the second section 1122 of the back plate 110 is connected to the back plate main body 111 when viewed from a direction of the back plate main body 111 away from the light guide plate 140. The second portion 132 includes a first portion 1321 abutting against a side surface of the second section 1122 facing away from the fourth section 1124, and a folded portion 1322 folded toward the back plate body 111, the folded portion 1322 abutting against a side surface of the back plate body 111 facing away from the light guide plate 140. In the embodiment of the present invention, the first portion 1321 and the folding portion 1322 can be adhered to the back plate 110 by a heat dissipation double-sided adhesive tape, so as to meet the requirements of close adhesion and heat dissipation. The first portion 1321 of the second portion 132 is located on the outer surface of the second section 1122, and the folded portion 1322 of the second portion 132 is located on a side surface of the back plate body 111 facing away from the light guide plate 140. Set up like this, on the one hand, be favorable to reducing the second part 132 of lamp strip 130 and be damaged by light guide plate 140's situation, on the other hand is favorable to conveniently fixing second part 132, improves the fastness of lamp strip 130.
In some embodiments of the present application, as shown in fig. 7, the backlight module 100 further includes a light shielding layer 190, and the light shielding layer 190 covers the first portion 1321. Thus, the first portion 1321 is protected to prevent external dust from entering the backlight module 100.
In some embodiments of the present application, as shown in fig. 1, the convex angle 141 is located on a side of the light guide plate 140 close to the first section 1121, and the convex angle 141 is provided with a rounded corner 1411. The convex angle 141 is opposite to the first portion 131 of the light bar 130, and the rounded angle is arranged on the convex angle 141, so that the contact stress of the convex angle 141 to the first portion 131 of the light bar 130 is favorably reduced, and the probability of the breakage of the light bar 130 due to the extrusion of the convex angle 141 is favorably reduced.
In some embodiments of the present application, as shown in fig. 1, a side of the first portion 131 proximate the lobe 141 is provided with a protective layer 180. The protective layer 180 may be made of a polyimide material. Through setting up protective layer 180, be favorable to improving the intensity that first portion 131 and salient 141 correspond the position, and then be favorable to reducing lamp strip 130 because of the broken condition emergence probability of salient 141 extrusion.
In some embodiments of the present application, as shown in fig. 2, light bar 130 is attached to side panel 112 by double-sided heat-dissipating glue 200. Therefore, heat generated by the light bar 130 can be transferred to the side plate 112 and then transferred to the back plate main body 111 for heat dissipation, thereby facilitating the improvement of the service life of the light bar 130.
In some embodiments of the present disclosure, as shown in fig. 2, the backlight module 100 further includes a plurality of optical film layers 210, which may include, for example, a brightness enhancement film, a diffusion film, and the like.
A second aspect of the present application provides a display device, including the backlight module 100 of the first aspect. The backlight module 100 is advantageous to reduce the probability that the light guide plate 140 shakes back and forth to damage the light bar 130 by performing multiple fixation on the light guide plate 140, and is further advantageous to improve the reliability of the backlight module 100 and the display device.
It is noted that in the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, it will be understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element or layer or intervening layers may also be present. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element or intervening layers or elements may also be present. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it can be the only layer between the two layers or elements, or more than one intermediate layer or element may also be present. Like reference numerals refer to like elements throughout.
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 an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only for the preferred embodiment of the present application and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (12)
1. A backlight module, comprising:
the back plate comprises a back plate main body and a side plate connected with the edge of the back plate main body, and the back plate main body and the side plate form an accommodating cavity together;
a reflection sheet disposed in the accommodation cavity;
the light bar is arranged on the side plate;
the light guide plate is arranged on one side, away from the back plate main body, of the reflector plate, a convex angle is arranged on one side, close to the light bar, of the light guide plate, the convex angle is used for being clamped with the back plate, and one side, away from the light bar, of the light guide plate is clamped with the back plate through a fixing piece;
a first adhesive layer disposed between the reflective sheet and the backplane body;
and a second adhesive layer disposed between the reflective sheet and the light guide plate.
2. The backlight module as claimed in claim 1, wherein the orthographic projection of the second adhesive layer on the back plate is zigzag.
3. The backlight module as claimed in claim 1, wherein the fixing member is an L-shaped rubber block, and one side of the light guide plate away from the light bar is in interference fit with the back plate through the L-shaped rubber block.
4. The backlight module of claim 1, wherein the side panel comprises a first section, a second section connected to the first section, a third section disposed opposite to the first section, and a fourth section disposed opposite to the second section, and the light bar comprises a first portion and a second portion, and the first portion is closely attached to a surface of the first section on a side close to the third section.
5. The backlight module according to claim 4, wherein an opening is disposed at a connection of the first section and the second section, and the second portion extends out of the back plate through the opening and is tightly attached to a surface of the second section on a side facing away from the fourth section.
6. The backlight module according to claim 4, wherein a groove is disposed at an edge of the back plate main body close to the second section, a notch is disposed at a position of the second section corresponding to the groove, the second portion is closely attached to a surface of the second section close to one side of the fourth section, and the second portion extends out of the back plate through the groove and the notch.
7. The backlight module according to claim 4, wherein a groove is disposed on an edge of the back plate main body close to the second section, a position of the second section corresponding to the groove is convex toward a direction away from the fourth section, the second portion is closely attached to a surface of the second section close to one side of the fourth section, and the second portion protrudes out of the back plate through the groove.
8. The backlight module according to claim 5, wherein the second portion comprises a first portion abutting a side surface of the second section facing away from the fourth section and a folded portion folded toward the back plate main body, the folded portion abutting a side surface of the back plate main body facing away from the light guide plate.
9. A backlight module according to claim 8, further comprising a light shielding layer covering the first portion.
10. The backlight module according to claim 4, wherein the convex angle is located on a side of the light guide plate close to the first section, and the convex angle is provided with a rounded corner.
11. A backlight module according to claim 4, wherein a side of the first portion adjacent to the convex corner is provided with a protective layer.
12. A display device comprising a backlight module according to any one of claims 1-11.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315885.9A CN114660700B (en) | 2022-03-28 | 2022-03-28 | Backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210315885.9A CN114660700B (en) | 2022-03-28 | 2022-03-28 | Backlight module and display device |
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| CN114660700A true CN114660700A (en) | 2022-06-24 |
| CN114660700B CN114660700B (en) | 2024-01-05 |
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| CN114660700B (en) | 2024-01-05 |
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