CN211123558U - Display device - Google Patents
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- CN211123558U CN211123558U CN201921996161.5U CN201921996161U CN211123558U CN 211123558 U CN211123558 U CN 211123558U CN 201921996161 U CN201921996161 U CN 201921996161U CN 211123558 U CN211123558 U CN 211123558U
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- guide plate
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- backlight module
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Abstract
The utility model provides a display device. The utility model provides a display device, which comprises a display panel and a backlight module, wherein the backlight module comprises a back plate and a light guide plate positioned on one side of the back plate; the light guide plate has relative first side and the second side that sets up, and first side and second side all are provided with at least one and dodge the portion, and the backplate is provided with the location portion that stretches out towards the light guide plate, and location portion is corresponding to dodging the portion, and location portion and dodge the position of portion cooperation in order to inject the light guide plate. The utility model discloses a display device is fixed firm at the light guide plate when erecting the screen and placing, and the produced offset of light guide plate thermal expansion is very little.
Description
Technical Field
The utility model relates to a liquid crystal display technology field especially relates to a display device.
Background
At present, with the increase of the use requirements of all aspects of interactive scenes such as touch control, body feeling, AR/VR and the like, especially the appearance of short video sides, the requirement of consumers on vertical screen display is increased, and a liquid crystal display device used by a vertical screen is generated.
The lcd device generally includes an lcd panel and a backlight module, the backlight module is generally divided into a side-in type and a direct-out type, and the side-in type backlight module is more and more widely applied along with the development trend of the display device being lighter and thinner. In the side-in backlight module, a reflecting sheet, a light guide plate and an optical diaphragm are sequentially stacked from bottom to top between a liquid crystal panel and a back plate of the backlight module, and a light source is positioned on the side of the light guide plate. The light guide plate is exposed to a light source and is thermally expanded, so that the light guide plate needs to be positioned.
Although the positioning design scheme of the light guide plate is mature in the backlight module used for the transverse screen in the prior art, how to fix the light guide plate firmly and how to reduce the displacement generated by the thermal expansion of the light guide plate in the backlight module used for the vertical screen still needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a display device, display device are fixed firm at the light guide plate when erecting the screen and placing, and the produced offset of light guide plate thermal expansion is very little.
The utility model provides a display device, include:
a display panel for displaying an image;
the backlight module is used for providing light rays for the display panel;
the backlight module includes:
the back plate has a supporting function;
the light guide plate is positioned on one side of the back plate;
the light guide plate has relative first side and the second side that sets up, and first side and second side all are provided with at least one and dodge the portion, and the backplate is provided with the location portion that stretches out towards the light guide plate, and location portion is corresponding to dodging the portion, and location portion and dodge the position of portion cooperation in order to inject the light guide plate.
In a possible implementation manner, the positioning portion is a positioning column, and the avoiding portion is an avoiding notch arranged at the edge of the first side and the second side, or the avoiding portion is an avoiding hole close to the edge of the first side and the second side.
In one possible embodiment, a gap is provided between the positioning post and the relief notch or the relief hole.
In a possible implementation manner, the backlight module further includes a light source, the light source is located on one side of the first side, and a gap between the avoiding portion on the second side and the positioning column is larger than a gap between the avoiding portion on the first side and the positioning column.
In one possible embodiment, the first side and the second side are opposite sides of the light guide plate in a length direction.
In one possible embodiment, the avoiding portion provided at the first side includes avoiding portions located at both ends of the first side and at least one avoiding portion located at a middle portion of the first side.
In one possible embodiment, the middle of the second side is provided with at least one escape.
In a possible implementation manner, a flexible limiting part is arranged between the part of the second side close to the two ends and the inner side wall of the back plate.
In one possible embodiment, the avoidance portion provided in the middle of the first side and the avoidance portion provided in the middle of the second side are symmetrical to each other.
In one possible embodiment, the central part of the first side and the central part of the second side are each provided with two spaced relief portions.
The utility model provides a display device, including display panel and backlight unit, through setting up backlight unit as the backlight unit that can erect the screen, can satisfy display device's perpendicular screen user demand like this, wherein, backlight unit includes backplate and light guide plate, the light guide plate is located the backplate inboard, the light guide plate has relative first side and the second side that sets up, through all setting up at least one dodge portion on first side and second side, set up location portion on the internal surface of backplate, location portion and dodge portion one-to-one, through the cooperation of location portion and dodge portion like this, can inject the position of light guide plate; because the first side and the second side of light guide plate all are provided with dodges the portion, the position of light guide plate first side and second side all is injectd by the positioning portion like this, and after the light guide plate is heated the inflation, the light guide plate can not produce obvious skew phenomenon, and this has improved the stability of light guide plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a partial cross-sectional view of a side-entry backlight module;
FIG. 2 is a schematic view of positioning a light guide plate of a transverse-screen backlight module;
fig. 3 is an assembly schematic view of the light guide plate and the back plate in a horizontal screen state according to an embodiment of the present invention;
fig. 4 is an assembly schematic view of the light guide plate and the back plate provided by the embodiment of the present invention in a vertical screen state;
fig. 5 is a schematic structural view of a light guide plate according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a back plate according to an embodiment of the present invention.
Description of reference numerals:
1-a backlight module; 11-a back plate; 111-a positioning section; 111 a-locating post; 12-a reflective sheet; 13-a light guide plate; 131-a first side; 132-a second side; 133-an avoidance portion; 133 a-avoiding gap; 14-an optical film; 15-a limit piece; 2-a display panel; 100-a limit notch; 200-a spacing column; 300-silica gel pad.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
FIG. 1 is a partial cross-sectional view of a side-entry backlight module; FIG. 2 is a schematic view of positioning a light guide plate of a transverse-screen backlight module; fig. 3 is an assembly schematic view of the light guide plate and the back plate in a horizontal screen state according to an embodiment of the present invention; fig. 4 is an assembly schematic view of the light guide plate and the back plate provided by the embodiment of the present invention in a vertical screen state; fig. 5 is a schematic structural view of a light guide plate according to an embodiment of the present invention; fig. 6 is a schematic structural diagram of a back plate according to an embodiment of the present invention.
As shown in fig. 1 and fig. 3 to fig. 6, the display device provided in this embodiment may include: a display panel 2, the display panel 2 being for displaying an image; the backlight module 1, the backlight module 1 is used for providing the light for the display panel 2; the backlight module 1 includes: the back plate 11, the back plate 11 has supporting function; and the light guide plate 13, wherein the light guide plate 13 is positioned at one side of the back plate 11.
The light guide plate 13 has a first side 131 and a second side 132 opposite to each other, each of the first side 131 and the second side 132 is provided with at least one escape portion 133, the back plate 11 is provided with a positioning portion 111 protruding toward the light guide plate 13, the positioning portion 111 corresponds to the escape portion 133, and the positioning portion 111 and the escape portion 133 cooperate to define the position of the light guide plate 13.
The display device provided by the embodiment can include a display panel 2 and a backlight module 1, wherein the display panel 2 is used for displaying images, and the backlight module 1 is used for providing light rays for the display panel 2, wherein the backlight module 1 can be a side-in type backlight module 1, and the backlight module 1 can be used for erecting a screen, that is, the backlight module 1 can be placed vertically. Most of the existing backlight modules 1 are in a display ratio of 16:9, and are in a horizontal placement state when being placed normally, but with the increase of diversified demands of the consumer market on display devices, the use demands of all aspects of interactive scenes such as touch control, body feeling and AR/VR are increased, and especially the demands of consumers on vertical screen display are increased due to the appearance of short videos. Therefore, the backlight module 1 in the display device of the embodiment can be used in a vertical screen mode, so as to enhance the flexibility of the display device.
The backlight module 1 may include a back plate 11 and a light guide plate 13, and the light guide plate 13 is located inside the back plate 11. As shown in fig. 1, the backlight module 1 of the display device of the present embodiment may include a back plate 11, and a reflective sheet 12, a light guide plate 13 and a plurality of optical films 14, which are disposed between the back plate 11 and the display panel 2 and stacked in sequence from bottom to top, wherein the light source of the side-in backlight module 1 is usually a linear light source located at a side of the light guide plate 13, the light guide plate 13 is used for emitting light entering from a side edge to the plurality of optical films 14 above the light guide plate 13, the reflective sheet 12 is used for reflecting light exposed from the ground back to the light guide plate 13 to improve the utilization efficiency of the light source, and the light is emitted to the display panel 2 from the front after passing through the plurality of optical films 14 more uniformly by the light guide plate.
Since the side-in backlight module 1 has the light guide plate 13, and the light guide plate 13 is usually made of an optical acrylic plate or PC plate with a very high refractive index and no light absorption, in the working process of the display device, the heat emitted from the light source at the side of the light guide plate 13, the heat caused by the light entering the light guide plate 13, and the heat generated by the components such as the circuit board will cause the light guide plate 13 to expand due to heat, which may cause the light guide plate 13 to displace, and affect the stability of the light guide plate 13 in the backlight module 1.
As shown in fig. 2, when positioning the light guide plate 13 of the conventional lateral type lateral backlight module 1, a plurality of position-limiting notches 100 are usually disposed at the lower end of the light guide plate 13, a plurality of position-limiting pillars 200 are disposed at positions corresponding to the position-limiting notches 100 on the inner surface of the back plate 11, the position-limiting pillars 200 can extend into the position-limiting notches 100, so that the light guide plate 13 can be supported by the position-limiting pillars 200 and the downward movement of the light guide plate 13 can be limited, a silicone pad 300 is disposed between the upper side of the light guide plate 13 and the inner side wall of the back plate 11, a plurality of silicone pads 300 can be disposed at different positions on the upper side of the light guide plate 13 at intervals, when the light guide plate 13 is thermally expanded, the upper side of the light guide plate 13 expands upward and generates upward displacement, the upper side wall of the light guide plate 13 presses the silicone pad 300, and the flexible silicone pad 300 contracts by its own elasticity, so that, to ensure the stability of the light guide plate 13.
However, positioning of the light guide plate 13 of the side-in type backlight module 1 in the vertical screen using process has become an industrial problem, and therefore, for the vertical screen type backlight module 1, the display device provided in this embodiment can reduce the moving amount of the vertically placed backlight module 1 on the basis of ensuring that the light guide plate 13 has a certain expansion space after the light guide plate 13 of the backlight module 1 is thermally expanded, and can improve the stability of the light guide plate 13.
Specifically, as shown in fig. 3 to 6, in the present embodiment, the light guide plate 13 located inside the back plate 11 has a first side 131 and a second side 132 opposite to each other, a relief portion 133 is provided on each of the first side 131 and the second side 132, a positioning portion 111 is provided on the inner surface of the back plate 11, the positioning portion 111 protrudes toward the light guide plate 13, and the positioning portion 111 and the relief portion 133 are correspondingly provided, so that the position of the light guide plate 13 can be defined by the cooperation of the positioning portion 111 and the relief portion 133.
Because the first side 131 and the second side 132 of the light guide plate 13 are both provided with the avoiding portion 133, after the light guide plate 13 is heated and expanded, the positions of the first side 131 and the second side 132 of the light guide plate 13 can be both limited, the light guide plate 13 can be prevented from shifting from the first side 131 to the second side 132, the light guide plate 13 can also be prevented from shifting from the second side 132 to the first side 131, the light guide plate 13 is well positioned, the movement amount of the light guide plate 13 can be reduced when the display device is vertically placed, and the stability of the light guide plate 13 in the backlight module 1 can be improved.
It can be understood that, in the embodiment, the avoiding portions 133 are disposed on the first side 131 and the second side 132 opposite to the light guide plate 13, and the positioning portions 111 are disposed on both sides of the inner wall of the back plate 11, so that the method of limiting the light guide plate 13 is applicable to the backlight module 1 used for the vertical screen, and is also applicable to the backlight module 1 used for the horizontal screen, which is not described herein again.
In addition, no matter whether the relief portion 133 of the first side 131 of the light guide plate 13 is disposed at any position of the first side 131, and the relief portion 133 of the second side 132 of the light guide plate 13 is disposed at any position of the second side 132, the positioning portions 111 at both sides of the back plate 11 and the relief portions 133 at both sides of the light guide plate 13 cooperate to limit the displacement of the light guide plate 13 in the direction between the first side 131 and the second side 132, so the present embodiment does not specifically limit the positions of the relief portions 133 at the first side 131 and the second side 132 of the light guide plate 13.
As shown in fig. 3 to 6, in one possible embodiment, the positioning portion 111 may be a positioning column 111a, and the avoiding portion 133 may be an avoiding notch 133a provided at an edge of the first side 131 and the second side 132. By setting the avoiding portion 133 of the light guide plate 13 as the avoiding notch 133a, the avoiding notch 133a of the first side 131 of the light guide plate 13 is located at the edge of the first side 131, and the avoiding notch 133a of the second side 132 of the light guide plate 13 is located at the edge of the second side 132, so that only the notches sunken in the light guide plate 13 need to be processed at the first side 131 and the second side 132 of the light guide plate 13, which is convenient for processing.
The notches are located at the edge of the light guide plate 13, the positioning columns 111a extending towards the light guide plate 13 are arranged at the positions, corresponding to the avoidance notches 133a, of the inner wall of the back plate 11, after the light guide plate 13 is installed, the positioning columns 111a are clamped into the avoidance notches 133a, the light guide plate 13 can be limited, the positioning columns 111a on the first side 131 and the second side 132 of the light guide plate 13 can limit the displacement of the light guide plate 13 in two opposite directions, and the positioning effect on the light guide plate 13 is better.
Alternatively, the relief 133 may be a relief hole near the edges of the first and second sides 131, 132. The avoiding portions 133 of the first side 131 and the second side 132 of the light guide plate 13 may also be in the form of avoiding holes, which may be disposed as close as possible to the edge of the first side 131 and the edge of the second side 132, respectively, so that the positioning posts 111a may extend into the avoiding holes, and by the stopping effect of the positioning posts 111a on the avoiding holes, the displacement of the light guide plate 13 between the first side 131 and the second side 132 may be limited, and the light guide plate 13 is prevented from moving from the first side 131 to the second side 132 or from the second side 132 to the first side 131; meanwhile, the avoiding holes arranged near the edges of the first side 131 and the second side 132 can avoid loss of the effective active area of the light guide plate 13, and ensure the light guide effect of the light guide plate 13.
Specifically, as shown in fig. 3 and 4, a gap may be formed between the positioning pillar 111a and the relief notch 133a or the relief hole. As mentioned above, the avoiding portion 133 disposed on the first side 131 and the second side 132 of the light guide plate 13 may be the avoiding notch 133a located at the edge of the first side 131 and the second side 132, or the avoiding hole close to the edge of the first side 131 and the second side 132, and a gap is formed between the positioning column 111a and the avoiding notch 133a, or between the positioning column 111a and the avoiding hole, that is, the cross-sectional dimension of the avoiding notch 133a or the avoiding hole is slightly larger than the outer diameter of the positioning column 111a, so that after the light guide plate 13 expands due to heat, the gap between the positioning column 111a and the avoiding notch 133a or the avoiding hole reserves a certain amount of expansion for the light guide plate 13, and the expanded light guide plate 13 extends in the gap between the positioning column 111a and the avoiding portion 133.
Thus, the phenomenon that the light guide plate 13 expands to cause the avoiding part 133 to press the positioning column 111a due to no gap or too small gap between the positioning column 111a and the avoiding part 133 can be avoided, so that the light guide plate 13 cannot extend after expanding and can bulge. This embodiment is through all setting up dodging portion 133 at first side 131 and second side 132 of light guide plate 13, playing better limiting displacement to light guide plate 13, on the basis of the amount of movement of reducible light guide plate 13, further reserve the clearance between reference column 111a and dodging portion 133, reserved certain inflation extension space for the light guide plate 13 inflation, can avoid appearing the phenomenon of bulging after the light guide plate 13 inflation.
In a possible embodiment, the backlight module 1 may further include a light source, the light source may be located on one side of the first side 131, and a gap between the avoiding portion 133 of the second side 132 and the positioning pillar 111a may be larger than a gap between the avoiding portion 133 of the first side 131 and the positioning pillar 111 a. As mentioned above, the backlight module 1 of the display device of the present embodiment can be applied to the side-in type backlight module 1, and the light source of the side-in type backlight module 1 is usually disposed at the side of the light guide plate 13.
For the backlight module 1 for portrait use, exemplarily, as shown in fig. 4, the light source may be disposed on the first side 131 of the light guide plate 13, for example, the first side 131 may be the right side of the light guide plate 13 shown in fig. 4, the light source is disposed outside the first side 131 of the light guide plate 13, and the light emitted from the light source enters the light guide plate 13 from the first side 131 of the light guide plate 13 and is transmitted from the first side 131 to the second side 132, i.e., the light emitted from the light source is transmitted from the right side to the left side of the light guide plate 13.
The light guide plate 13 is thermally expanded due to the heat emitted from the light source being conducted to the light guide plate 13, and the light guide plate 13 is mainly expanded from the first side 131 to the second side 132 in the case where the light source is disposed on the first side 131 of the light guide plate 13, and for example, the light guide plate 13 is mainly expanded from the right side to the left side in the case where the light source is disposed on the right side of the light guide plate 13 as shown in fig. 4.
Therefore, in the embodiment, since the gap between the avoiding portion 133 of the second side 132 of the light guide plate 13 and the positioning column 111a is larger than the gap between the avoiding portion 133 of the first side 131 and the positioning column 111a, on one hand, the positioning column 111a has a better limiting effect on the first side 131 of the light guide plate 13, and the light guide plate 13 can be prevented from shifting from the second side 132 to the first side 131; on the other hand, since the light source is disposed outside the first side 131 of the light guide plate 13, the light guide plate 13 mainly expands from the first side 131 to the second side 132, and the relief portion 133 with a larger cross-sectional dimension is designed on the second side 132 of the light guide plate 13, so that the gap between the relief portion 133 of the second side 132 and the positioning post 111a is larger, and thus more expansion space can be reserved for the thermal expansion of the second side 132 of the light guide plate 13, so as to ensure that the light guide plate 13 does not bulge after expanding from the first side 131 to the second side 132.
Alternatively, the first side 131 and the second side 132 may be opposite sides of the length direction of the light guide plate 13. As shown in fig. 4, for the backlight module 1 of the display device in vertical screen use, the light guide plate 13 is arranged from top to bottom in the longitudinal direction thereof, that is, the left and right sides of the light guide plate 13 are long sides thereof, and the upper and lower ends are wide sides thereof, at this time, the light source may be located on the left side or the right side of the light guide plate 13, for example, the right side of the light guide plate 13, and the first side 131 and the second side 132 of the light guide plate 13 may correspond to the right side and the left side.
When the light guide plate 13 expands due to heat, the amount of expansion extending outward from the long sides of the opposite sides of the light guide plate is generally small, while the amount of expansion extending outward from the wide sides of the opposite ends of the light guide plate is relatively large, that is, the entire length of the light guide plate 13 changes greatly with respect to the entire width. Therefore, in the present embodiment, the avoiding portions 133 are disposed on two opposite sides of the light guide plate 13 in the length direction, that is, the avoiding portions 133 are disposed on two sides of the light guide plate 13 with relatively small expansion amount, so that the positioning posts 111a can be prevented from blocking the expansion of the light guide plate 13 on the basis of limiting the light guide plate 13, and further the light guide plate 13 is prevented from bulging possibly caused by the expansion.
If the first side 131 and the second side 132 correspond to two sides of the light guide plate 13 in the width direction, that is, the avoiding portion 133 is disposed on the broad sides of the two sides of the light guide plate 13, after the light guide plate 13 is heated and expanded, the expansion amount of the broad sides extending outward is larger, so that the positioning columns 111a on the back plate 11 may obstruct the broad sides of the light guide plate 13 from expanding outward, and the light guide plate 13 may bulge after expanding.
Similarly, as shown in fig. 3, for the backlight module 1 used in the landscape screen, the wide sides of the two sides of the light guide plate 13 correspond to the left side and the right side of the light guide plate 13, and after the light guide plate 13 expands due to heat, the expansion amount of the light guide plate 13 extending to the left and the right sides is larger, so that the first side 131 and the second side 132 of the light guide plate 13 of the present embodiment correspond to the long sides of the upper end and the lower end of the light guide plate 13, so as to avoid the blocking of the expansion of the light guide plate 13 caused by.
The first side 131 of the light guide plate 13 may be a lower end of the light guide plate 13, and the second side 132 of the light guide plate 13 may be an upper end of the light guide plate 13, for example, the light source may be disposed below the lower end of the light guide plate 13, and light emitted from the light source is transmitted from the lower end to the upper end of the light guide plate 13. The positioning columns 111a at the lower end of the back plate 11 can limit the position of the light guide plate 13 and simultaneously support the light guide plate 13, and the clearance between the positioning columns 111a at the upper end of the back plate 11 and the avoiding part 133 at the upper end of the light guide plate 13 is large, so that the requirement of the upward expansion amount of the light guide plate 13 can be met.
As shown in fig. 3 and 4, in one possible embodiment, the bypass portion 133 provided to the first side 131 may include bypass portions 133 at both ends of the first side 131 and at least one bypass portion 133 at a middle portion of the first side 131. As described above, the light source may be disposed outside the first side 131 of the light guide plate 13, and the light guide plate 13 mainly expands from the first side 131 to the second side 132 when thermally expanded, so that the escape portion 133 disposed on the first side 131 of the light guide plate 13 cooperates with the positioning portion 111 of the back plate 11 to mainly limit the first side 131 of the light guide plate 13.
By providing the escape portions 133 at the two ends of the first side 131 of the light guide plate 13, in the backlight module 1 used for a vertical screen or the backlight module 1 used for a horizontal screen, the escape portions 133 at the two ends of the first side 131 cooperate with the positioning portions 111 of the back plate 11, so that the light guide plate 13 can be prevented from shifting from the second side 132 to the first side 131, and the escape portions 133 at the two ends can limit the movement of the light guide plate 13 along the extension direction of the first side 131, that is, after the light guide plate 13 expands due to heat, the escape portions 133 at the two ends of the first side 131 cooperate with the positioning portions 111 to limit the movement of the light guide plate 13 in three directions, and the second side 132 of the light guide plate 13 is also provided with the escape portions 133, so that the movement.
In addition, at least one relief portion 133 may be disposed in the middle of the first side 131, and the relief portion 133 is engaged with the positioning portion 111 to mainly prevent the light guide plate 13 from moving from the second side 132 to the first side 131 after being expanded. It should be noted that the cross-sectional area of the relief portions 133 at the two ends of the first side 131 may be larger than the cross-sectional area of the relief portion 133 in the middle of the first side 131, that is, the gap between the relief portions 133 at the two ends of the first side 131 and the positioning post 111a is larger than the gap between the relief portions 133 in the middle of the first side 131 and the positioning post 111 a.
On one hand, since the first side 131 is a long side of the light guide plate 13, and the light guide plate 13 has a large expansion amount extending from the middle of the first side 131 to the two ends of the first side 131, a sufficient gap is reserved between the avoiding portion 133 at the two ends of the first side 131 and the positioning column 111a to meet the requirement of the expansion amount of the light guide plate 13; on the other hand, since the light guide plate 13 mainly expands from the first side 131 to the second side 132 and expands from the middle of the first side 131 to the two ends of the first side 131, the expansion amount of the middle of the first side 131 is small, and therefore the gap reserved between the avoiding portion 133 in the middle of the first side 131 and the positioning column 111a can be small.
As shown in fig. 3 to 6, optionally, the middle portion of the second side 132 may be provided with at least one escape portion 133. The light guide plate 13 expands from the first side 131 to the second side 132, and the escape portions 133 are provided at both ends of the first side 131 of the light guide plate 13, and the escape portions 133 at both ends of the first side 131 are engaged with the positioning posts 111a to limit the outward extension of the broad side of the light guide plate 13, so that the escape portions 133 do not need to be provided at both ends of the second side 132 of the light guide plate 13. And through set up dodging portion 133 in the middle part of second side 132, dodging portion 133 and reference column 111a cooperation can avoid first side 131 to produce too much displacement to second side 132.
It can be understood that, the avoiding portion 133 disposed in the middle of the second side 132 is matched with the positioning column 111a, so that when the light guide plate 13 is limited from the first side 131 to the second side 132, a certain expansion amount space is reserved for the light guide plate 13 to expand from the first side 131 to the second side 132 through the gap between the avoiding portion 133 in the middle of the second side 132 and the positioning column 111a, and therefore, the light guide plate 13 can be prevented from swelling after being expanded.
As shown in fig. 3 and 4, in one embodiment, a flexible limiting member 15 is disposed between the portion of the second side 132 near the two ends and the inner sidewall of the back plate 11. In this embodiment, the avoiding portion 133 is disposed in the middle of the second side 132 of the light guide plate 13, and the avoiding portion 133 cooperates with the positioning column 111a to prevent the first side 131 from deviating too much to the second side 132 after the light guide plate 13 expands, and meanwhile, a certain amount of expansion is reserved for the expansion of the light guide plate 13 by the gap between the avoiding portion 133 in the middle of the second side 132 and the positioning column 111 a.
Furthermore, the position of the second side 132 close to the two ends is provided with the limiting member 15, the limiting member 15 is made of a flexible material, after the light guide plate 13 is heated and expanded, the light guide plate 13 expands from the first side 131 to the second side 132, a gap between the avoiding portion 133 of the second side 132 and the positioning column 111a enables the light guide plate 13 to extend to the second side 132, meanwhile, the position of the second side 132 close to the two ends presses the limiting member 15, and the limiting member 15 compresses toward the back plate 11, which can meet the requirement of the expansion amount of the light guide plate 13, meanwhile, because the limiting member 15 is tightly attached to the second side 132 of the light guide plate 13, the limiting member 15 can improve the stability of the light guide plate 13, and prevent the light.
For example, the flexible limiting member 15 may be a silicon rubber member, one limiting member 15 may be disposed at a position on the second side 132 of the light guide plate 13 near both ends, or a plurality of flexible limiting members 15 may be disposed at positions near both ends, which is not limited in this embodiment. It can be understood that, the position of the second side 132 of the light guide plate 13 near both ends is provided with the limiting members 15, rather than the position of one of the ends is provided with the limiting members 15, which can ensure the force balance of both ends of the second side 132 of the light guide plate 13.
In one possible embodiment, as shown in fig. 3 and 4, the relief 133 provided in the middle of the first side 131 and the relief 133 provided in the middle of the second side 132 may be symmetrical to each other. By making the relief portions 133 disposed in the middle of the first side 131 and the second side 132 symmetrical to each other, after the light guide plate 13 is heated and expanded, the relief portions 133 of the first side 131 and the second side 132 of the light guide plate 13 are respectively abutted against the positioning portions 111 on both sides of the back plate 11, and the acting forces of the positioning portions 111 on both sides on the light guide plate 13 are also symmetrical to each other, so that the strength of the light guide plate 13 can be improved, and the stability of the light guide plate 13 can be enhanced.
For example, in the case that one avoidance portion 133 is disposed in the middle of the first side 131 and the middle of the second side 132, the avoidance portions 133 on both sides may be located on the central line of the light guide plate 13, and in the case that a plurality of avoidance portions 133 are disposed in the middle of the first side 131 and the middle of the second side 132, the avoidance portions 133 on both sides may be symmetrically spaced along the central line of the light guide plate 13.
In one embodiment, as shown in fig. 3 and 4, the middle portion of the first side 131 and the middle portion of the second side 132 may each be provided with two spaced relief portions 133. In this embodiment, two avoiding portions 133 may be respectively disposed in the middle of the first side 131 and the middle of the second side 132, the two avoiding portions 133 are disposed at intervals, and two positioning portions 111 and the avoiding portions 133 are correspondingly disposed on two sides of the back plate 11, so as to enhance the stability of the light guide plate 13, and at the same time, the excessive avoiding portions 133 are avoided, which may affect the performance of the light guide plate 13. Preferably, the two avoiding portions 133 on the same side may be symmetrically disposed along a center line of the light guide plate 13.
The display device provided by the embodiment comprises a display panel and a backlight module, wherein the backlight module is arranged to be the backlight module capable of erecting a screen, so that the use requirement of the display device for erecting the screen can be met; because the first side and the second side of light guide plate all are provided with dodges the portion, the position of light guide plate first side and second side all is injectd by the positioning portion like this, and after the light guide plate is heated the inflation, the light guide plate can not produce obvious skew phenomenon, and this has improved the stability of light guide plate.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A display device, comprising:
a display panel for displaying an image;
the backlight module is used for providing light rays for the display panel;
the backlight module includes:
the back plate has a supporting function;
the light guide plate is positioned on one side of the back plate;
the light guide plate is provided with a first side and a second side which are oppositely arranged, at least one avoiding part is arranged on each of the first side and the second side, the back plate is provided with a positioning part extending towards the light guide plate, the positioning part corresponds to the avoiding part, and the positioning part and the avoiding part are matched to limit the position of the light guide plate.
2. The display device according to claim 1, wherein the positioning portion is a positioning column, the avoiding portion is an avoiding notch provided at an edge of the first side and the second side, or the avoiding portion is an avoiding hole close to the edge of the first side and the second side.
3. The display device according to claim 2, wherein a gap is provided between the positioning column and the avoidance notch or the avoidance hole.
4. The display device according to claim 3,
the backlight module further comprises a light source, the light source is located on one side of the first side, and a gap between the avoiding portion of the second side and the positioning column is larger than a gap between the avoiding portion of the first side and the positioning column.
5. The display device according to any one of claims 1 to 4, wherein the first side and the second side are opposite sides in a length direction of the light guide plate.
6. The display device according to any one of claims 1 to 4, wherein the avoiding portion provided to the first side includes avoiding portions provided to both ends of the first side and at least one avoiding portion provided to a middle portion of the first side.
7. The display device according to claim 6, wherein a middle portion of the second side is provided with at least one escape portion.
8. The display device according to claim 7, wherein a flexible stopper is disposed between a portion of the second side near the two ends and an inner sidewall of the back plate.
9. The display device according to claim 7, wherein the avoiding portion provided in the middle of the first side and the avoiding portion provided in the middle of the second side are symmetrical to each other.
10. The display device according to claim 7, wherein the middle portion of the first side and the middle portion of the second side are each provided with two spaced escape portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996161.5U CN211123558U (en) | 2019-11-19 | 2019-11-19 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921996161.5U CN211123558U (en) | 2019-11-19 | 2019-11-19 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211123558U true CN211123558U (en) | 2020-07-28 |
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| CN201921996161.5U Active CN211123558U (en) | 2019-11-19 | 2019-11-19 | Display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415425A (en) * | 2022-02-16 | 2022-04-29 | 深圳市瀚达美电子有限公司 | Vehicle-mounted backlight module without middle frame |
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2019
- 2019-11-19 CN CN201921996161.5U patent/CN211123558U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114415425A (en) * | 2022-02-16 | 2022-04-29 | 深圳市瀚达美电子有限公司 | Vehicle-mounted backlight module without middle frame |
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