CN214409523U - Backlight module and display panel - Google Patents
Backlight module and display panel Download PDFInfo
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- CN214409523U CN214409523U CN202120805372.7U CN202120805372U CN214409523U CN 214409523 U CN214409523 U CN 214409523U CN 202120805372 U CN202120805372 U CN 202120805372U CN 214409523 U CN214409523 U CN 214409523U
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 35
- 239000004973 liquid crystal related substance Substances 0.000 claims description 13
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- 238000010586 diagram Methods 0.000 description 4
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- 230000002349 favourable effect Effects 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- 229920006335 epoxy glue Polymers 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
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Abstract
The utility model provides a backlight module and display panel, backlight unit includes: a light guide plate; the side backlight source is positioned at the side part of the light guide plate and comprises an RGB (red, green and blue) three-color LED lamp source packaging structure, and the RGB three-color LED lamp source packaging structure comprises a red LED chip, a green LED chip and a blue LED chip; and the distance between the micro lens and the light guide plate is less than that between the RGB three-color LED light source packaging structure and the light guide plate. RGB three-colour LED lamp source packaging structure can send ruddiness, green glow and blue light, and the white light that assembles the formation by ruddiness, green glow and blue light has the wide advantage of colour gamut, assembles the light that RGB three-colour LED lamp source packaging structure sent through microlens extremely the light guide plate can reduce the red glow, green glow and the blue light and assemble the spatial distance of the white light that forms to reduce backlight unit's size, make backlight unit occupy the frame space for a short time.
Description
Technical Field
The utility model relates to a show technical field, concretely relates to backlight module and display panel.
Background
In the field of display technology, the structure of a liquid crystal display device includes a liquid crystal panel and a backlight module, the liquid crystal panel does not emit light, and the backlight module is required to provide a light source to normally display images, therefore, the backlight module is one of the essential key structures of the liquid crystal display device, and according to different incident modes of the light source, the backlight module can be divided into a direct type backlight module and a lateral type backlight module, wherein the lateral type backlight module is a side portion of a light guide plate which arranges an LED light source in the backlight module, light emitted by the LED light source enters the light guide plate from a light incident surface on one side of the light guide plate, is emitted from a light emergent surface of the light guide plate after being reflected and diffused, and then passes through an optical film group to form a light source which is provided for the liquid crystal panel.
However, the backlight module provided by the prior art has the problems that the color gamut is difficult to be considered simultaneously and the occupied frame space is small.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art backlight unit and having the wide and little problem of occupation frame space of the colour gamut that is difficult to satisfy the light source simultaneously to a backlight unit and display panel are provided.
The utility model provides a backlight module, include: a light guide plate; the side backlight source is positioned on the side part of the light guide plate and comprises an RGB (red, green and blue) three-color LED lamp source packaging structure, and the RGB three-color LED lamp source packaging structure comprises a red LED chip capable of emitting red light, a green LED chip capable of emitting green light and a blue LED chip capable of emitting blue light; and the distance from the micro lens to the light guide plate is smaller than that from the RGB three-color LED lamp source packaging structure to the light guide plate, and the micro lens is suitable for converging light rays emitted by the RGB three-color LED lamp source packaging structure to the light guide plate.
Optionally, the number of the RGB three-color LED light source package structures is one or several; when the number of the RGB three-color LED lamp source packaging structures is a plurality, the RGB three-color LED lamp source packaging structures are sequentially arranged along the extending direction of the side part of the light guide plate, and the distance between the adjacent RGB three-color LED lamp source packaging structures is 0 mm-5 mm.
Optionally, the number of the microlenses is one or several, and the number of the microlenses is equal to the number of the RGB three-color LED light source packaging structures.
Optionally, the micro lens includes a fresnel lens or a convex lens, and the thickness of the micro lens is 0.5 mm to 1.5 mm.
Optionally, a distance from a focal point of the microlens on a side of the light guide plate facing the microlens to a side edge of the light guide plate on the side facing the microlens is 0 mm to 2 mm.
Optionally, the RGB three-color LED light source package structure and the microlens are packaged together; alternatively, the micro lens and the light guide plate are packaged together.
Optionally, a distance between the RGB three-color LED light source package structure and the microlens is 0 mm to 1 mm.
Optionally, the thickness of the side backlight source in the direction toward the light guide plate is 0.5 mm to 3.5 mm.
Optionally, the method further includes: a reflective sheet positioned at one side of the light guide plate; the lower diffusion sheet is positioned on one side of the light guide plate, which is back to the reflection sheet; the lower brightness enhancement film is positioned on one side of the lower diffusion film back to the light guide plate; the upper brightness enhancement sheet is positioned on one side, back to the light guide plate, of the lower brightness enhancement sheet; and the upper diffusion sheet is positioned on one side of the upper brightness enhancement sheet, which is back to the light guide plate.
The utility model also provides a display panel, include: the utility model provides a backlight module; a liquid crystal display panel; the backlight module is positioned on the back of the liquid crystal display panel.
The technical scheme of the utility model following beneficial effect has:
1. the utility model provides a backlight unit, because RGB three-colour LED lamp source packaging structure can send ruddiness, green glow and blue light, the white light that assembles formation by ruddiness, green glow and blue light has the wide advantage of colour gamut, assemble the light that RGB three-colour LED lamp source packaging structure sent extremely through microlens the light guide plate can reduce ruddiness, green glow and blue light and assemble the white light's that forms spatial distance to backlight unit's size has been reduced, it is little that messenger backlight unit occupies the frame space.
2. Further, a plurality of RGB three-colour LED lamp source packaging structure arranges in proper order along the lateral part extending direction of light guide plate, according to the size of display panel size, rationally selects RGB three-colour LED lamp source packaging structure's quantity, makes the light guide plate can form even light, improves display panel's display effect.
3. The utility model discloses technical scheme provides a display panel, backlight unit are located liquid crystal display panel's the back, and because the wide and backlight unit of light colour gamut that backlight unit provided occupies that the frame space is little, consequently, display panel's color reality degree is high, and display effect is good, and display panel's overall dimension is less relatively.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 creative efforts.
Fig. 1 is a schematic diagram illustrating a principle of converging light by a microlens according to the present invention;
fig. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a backlight module according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a backlight module according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display panel according to an embodiment of the present invention.
Detailed Description
The utility model provides a backlight unit, includes LED light source and light guide plate, and the LED light source is by coating the yellow phosphor powder that can be aroused by blue light on blue LED chip, and the blue light that blue LED chip sent complements with the yellow light that yellow phosphor powder sent and forms white light, and the colour gamut of the light source that this kind of backlight structure provided remains to be improved.
In order to improve the color gamut of the light source, another backlight module is provided, a RGB three-color LED light source is adopted to mix to form a backlight source of white light, the color gamut can be theoretically improved by 30% -40%, however, the backlight source needs to have enough space to naturally mix red light, green light and blue light emitted by the RGB three-color LED light source into white light, the structure of the backlight source occupies large space of a frame, the frame is approximately more than 7mm, and the structure does not meet the requirement of a narrow frame of a display panel.
On this basis, the inventor encapsulates three LED chips in an LED lamp source to according to the characteristics that microlens has the light of assembling, set up microlens in the side backlight among backlight unit, assemble the light that RGB three-colour LED lamp source packaging structure sent to the light guide plate through microlens, with the problem that improves backlight unit light source colour gamut is poor and occupation space is big.
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, 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 work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
An embodiment of the present invention provides a backlight module, please refer to fig. 1 to 4 in combination, including: a light guide plate 1; the side backlight source 2 is positioned at the side part of the light guide plate 1, the side backlight source 2 comprises an RGB three-color LED lamp source packaging structure 2A, and the RGB three-color LED lamp source packaging structure 2A comprises a red LED chip 201 capable of emitting red light, a green LED chip 202 capable of emitting green light and a blue LED chip 203 capable of emitting blue light; and the distance from the micro lens 3 to the light guide plate 1 is smaller than the distance from the RGB three-color LED lamp source packaging structure 2A to the light guide plate 1, and the micro lens 3 is suitable for converging the light rays emitted by the RGB three-color LED lamp source packaging structure 2A to the light guide plate 1.
The red LED chip 201, the green LED chip 202, and the blue LED chip 203 may be plastically packaged together by epoxy resin adhesive to form a light source, and the red LED chip 201, the green LED chip 202, and the blue LED chip 203 are not limited to the linear arrangement shown in fig. 2 to 4, and may also be arranged in a triangular, U-shaped, or other arrangement.
Because the red LED chip 201, the green LED chip 202 and the blue LED chip 203 are plastically packaged together, compared with the prior art in which one LED chip is packaged together, the space is saved, and the overall size of the RGB three-color LED light source packaging structure 2A can be smaller.
The micro lens 3 comprises a fresnel lens or a convex lens, and preferably, the micro lens 3 is a fresnel lens which has the advantages of small thickness and portability.
The distance between the RGB three-color LED lamp source package structure 2A and the microlens 3 is 0 mm to 1 mm, for example, 0 mm, 0.2 mm, 0.5 mm, 0.8 mm or 1.0 mm, and preferably, when the microlens 3 is a fresnel lens, the distance between the RGB three-color LED lamp source package structure 2A and the microlens 3 is 0 mm, that is, the RGB three-color LED lamp source package structure 2A is tightly attached to the microlens 3, which is favorable for reducing the space occupied by the display module on the frame of the display panel.
Referring to fig. 2, in one embodiment, the micro lens 3 is disposed between the RGB three-color LED light source package structure 2A and the light guide plate 1.
Referring to fig. 3, in another embodiment, the micro lenses 3 are packaged with the light guide plate 1, and specifically, the micro lenses 3 may be packaged with the light guide plate 1 by epoxy glue.
Referring to fig. 4, in another embodiment, the RGB three-color LED light source package structure 2A and the micro lens 3 are packaged together, and specifically, the RGB three-color LED light source package structure 2A may be packaged together with the micro lens 3 through an epoxy resin glue. The RGB three-color LED lamp source packaging structure 2A and the micro lens 3 are packaged together, red light, green light and blue light are combined into white light in a narrow space, the side backlight source 2 is welded on a backlight FPC, and by adopting the structure, the frame is basically the same as the traditional side backlight structure.
The thickness of the microlens 3 along the optical axis direction is 0.5 mm to 1.5 mm, for example, 0.5 mm, 0.8 mm, 1.0 mm, 1.3 mm, or 1.5 mm.
The distance from the focal point of the microlens 3 on the side facing the light guide plate 1 to the edge of the side of the light guide plate 1 on the side facing the microlens 3 is 0 mm to 2 mm, for example, 0 mm, 0.5 mm, 1.0 mm, 1.5 mm, 1.8 mm or 2.0 mm, and preferably 0 mm, that is, the focal point of the microlens 3 on the side facing the light guide plate 1 just falls on the edge of the side of the light guide plate 1 on the side facing the microlens 3, which is favorable for reducing the space occupied by the backlight module on the frame of the display panel.
If the distance from the focal point of the microlens 3 on the side facing the light guide plate 1 to the edge of the side of the light guide plate 1 on the side facing the microlens 3 is too small, for example, the focal point of the microlens 3 on the side facing the light guide plate 1 falls into the light guide plate 1, it is difficult for the light guide plate 1 to form uniform light; if the distance between the focal point of the microlens 3 facing the light guide plate 1 and the edge of the side portion of the light guide plate 1 facing the microlens 3 is too large, for example, the distance between the focal point of the microlens 3 facing the light guide plate 1 and the edge of the side portion of the light guide plate 1 facing the microlens 3 is greater than 2 mm, the backlight module occupies unnecessary space, which is not favorable for reducing the size of the backlight module.
The thickness of the side backlight 2 in the direction toward the light guide plate 1 is 0.5 mm to 3.5 mm, and for example, 0.5 mm, 1 mm, 1.5 mm, 1.8 mm, 2.0 mm, 2.5 mm, 2.8 mm, 3.0 mm, 3.3 mm, or 3.5 mm.
With reference to fig. 2, the backlight module further includes: a reflective sheet 8 positioned at one side of the light guide plate 1; a lower diffusion sheet 4 positioned on one side of the light guide plate 1 opposite to the reflection sheet 8; a lower brightness enhancement film 5 positioned at one side of the lower diffusion film 4 back to the light guide plate 1; the upper brightness enhancement film 6 is positioned on one side of the lower brightness enhancement film 5 back to the light guide plate 1; and the upper diffusion sheet 7 is positioned at one side of the upper brightness enhancement sheet 6, which is back to the light guide plate 1.
The light guide plate 1, the reflective sheet 8, the lower diffusion sheet 4, the lower brightness enhancement sheet 5, the upper brightness enhancement sheet 6, and the upper diffusion sheet 7 described in this embodiment may be selected reasonably according to the prior art, and other structures in the backlight module, such as the reflective film and the light shielding film, may be set reasonably, which is not limited in this embodiment.
The number of the RGB three-color LED light source package structures 2A is one or several.
Referring to fig. 5, when the number of the RGB three-color LED lamp source package structures 2A is several, the several RGB three-color LED lamp source package structures 2A are sequentially arranged along the extending direction of the side portion of the light guide plate 1, and a distance between adjacent RGB three-color LED lamp source package structures 2A is 0 mm to 5 mm, for example, 0 mm, 1 mm, 2 mm, 3 mm, 4 mm, or 5 mm.
A plurality of RGB three-colour LED lamp source packaging structure 2A arranges in proper order along the lateral part extending direction of light guide plate 1, according to the display panel size, rationally selects RGB three-colour LED lamp source packaging structure 2A's quantity, makes light guide plate 1 can form even light, improves display panel's display effect.
In an embodiment, the number of the RGB three-color LED light source package structures 2A may be 1 to 30, for example, 1, 5, 10, 15, 20, 25 or 30, the plurality of RGB three-color LED light source package structures 2A are sequentially arranged in a line along the extending direction of the side portion of the light guide plate 1, in other embodiments, the plurality of RGB three-color LED light source package structures 2A are sequentially arranged in two lines along the extending direction of the side portion of the light guide plate 1, the number and the arrangement mode of the RGB three-color LED light source package structures 2A are selected according to the size of the display panel, which is not limited in this embodiment.
The number of the micro lenses 3 is one or a plurality of micro lenses, and the number of the micro lenses 3 is equal to the number of the RGB three-color LED light source packaging structures 2A. A microlens 3 is suitable for converging light rays emitted by an RGB three-color LED light source packaging structure 2A to the light guide plate 1, and the arrangement mode of the microlens 3 is similar to that of the RGB three-color LED light source packaging structure 2A.
The backlight unit that this embodiment technical scheme provided, because RGB three-colour LED lamp source packaging structure 2A can send ruddiness, green glow and blue light, by ruddiness, the white light that green glow and blue light assemble and form has the wide advantage of colour gamut, assemble light to light guide plate 1 that RGB three-colour LED lamp source packaging structure 2A sent through microlens 3, can reduce ruddiness, the green glow and the blue light assemble the white light's that forms spatial distance, thereby backlight unit's size has been reduced, it is little that messenger backlight unit occupies the frame space.
Referring to fig. 5, an embodiment of the present invention provides a display panel, including the backlight module and the liquid crystal display panel 9 provided in the above embodiment, the backlight module is located on the back side of the liquid crystal display panel 9, and the direction indicated by the arrow in fig. 5 is a light transmission direction. It should be noted that, the backlight module shown in fig. 5 only shows the light guide plate 1 and the RGB three-color LED light source package structure 2A for indicating the relative position relationship with the liquid crystal display panel 9, and other structures are not shown.
According to the display panel provided by the technical scheme, the backlight module is located on the back face of the liquid crystal display panel 9, and because the light provided by the backlight module is wide in color gamut and the backlight module occupies small frame space, the color reality degree of the display panel is high, the display effect is good, and the whole size of the display panel is relatively small.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120805372.7U CN214409523U (en) | 2021-04-19 | 2021-04-19 | Backlight module and display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120805372.7U CN214409523U (en) | 2021-04-19 | 2021-04-19 | Backlight module and display panel |
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| CN214409523U true CN214409523U (en) | 2021-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327818A (en) * | 2022-08-31 | 2022-11-11 | 义乌清越光电技术研究院有限公司 | Backlight module, preparation method of backlight module and display device |
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2021
- 2021-04-19 CN CN202120805372.7U patent/CN214409523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115327818A (en) * | 2022-08-31 | 2022-11-11 | 义乌清越光电技术研究院有限公司 | Backlight module, preparation method of backlight module and display device |
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