CN217821189U - Flexible glass substrate and backlight module - Google Patents
Flexible glass substrate and backlight module Download PDFInfo
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- CN217821189U CN217821189U CN202221829189.1U CN202221829189U CN217821189U CN 217821189 U CN217821189 U CN 217821189U CN 202221829189 U CN202221829189 U CN 202221829189U CN 217821189 U CN217821189 U CN 217821189U
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Abstract
The utility model discloses a flexible glass substrate and backlight unit. The flexible glass substrate comprises a substrate main body and a frame-shaped structure, the substrate main body is provided with a display area, the frame-shaped structure comprises a first-level frame-shaped structure and a second-level frame-shaped structure, the first-level frame-shaped structure and the second-level frame-shaped structure are arranged on the substrate main body from inside to outside in a surrounding mode on the display area, a glue accommodating space is arranged between the first-level frame-shaped structure and the second-level frame-shaped structure, the height of the first-level frame-shaped structure is equal to the preset film thickness h of the display layer, and the area, located outside the second-level frame-shaped structure, of the substrate main body is used for coating the glue. Set up frame column structure formation and hold gluey space in the base plate main part for during excessive glue gets into and holds gluey space, avoided excessive glue and frame to glue and mix, and glue in holding gluey space after losing pressure can not flow back to the display area because of surface tension, avoid appearing the condition that the regional inward flange rete thickness of display is greater than the central rete thickness, guaranteed the uniformity of rete thickness.
Description
Technical Field
The utility model relates to a display device produces technical field, especially relates to a flexible glass substrate and backlight unit.
Background
Along with the trend of consumption upgrading, the current flat panel display electronic products such as mobile phones and computers have higher requirements on display performance, the traditional LCD cannot meet the current consumption requirements due to color gamut and contrast and is gradually eliminated, and the quantum dot technology with better display effect is gradually created, for example, a quantum dot backlight module.
In the prior art, a rolling coating mode is mainly adopted for producing the quantum dot backlight module. Preparing two pieces of glass according to production requirements, wherein one piece of glass is used as a substrate main body, the other piece of glass is used as a cover layer, putting the substrate main body on a roller press, coating quantum dots on a display area of the substrate main body through quantum dot glue to form a display layer, dispensing a frame outside the display area, covering the cover layer, rolling by using the roller press to enable the thickness of a film layer of the display layer between the substrate main body and the cover layer to be consistent and equal to the preset film layer thickness, and finally curing the quantum dot glue and the frame glue in sequence. By adopting the process, the quantum dot backlight module has higher and smoother brightness, but the production mode of rolling-curing often results in that quantum dot glue is pressed to overflow and frame glue is mixed during rolling, and after rolling, the quantum dot glue loses pressure and flows back under the drive of surface tension, so that the thickness of a film layer is inconsistent, and the display effect of the quantum dot backlight module is negatively influenced.
Based on the above, a flexible glass substrate is urgently needed, which can prevent the quantum dot glue from overflowing and mixing with the frame glue during rolling, reduce the flow of the quantum dot glue after rolling and before curing, and ensure the consistency of the thickness of the film layer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a flexible glass substrate can avoid quantum dot glue excessive when the roll-in and glue the frame and mix, reduces quantum dot glue and in the roll-in back, before the solidification flow, guarantees the uniformity of rete thickness.
To achieve the purpose, the utility model adopts the following technical proposal:
a flexible glass substrate comprising: a substrate main body having a display region for disposing a display layer; the frame-shaped structure comprises a first-stage frame-shaped structure and a second-stage frame-shaped structure, the first-stage frame-shaped structure and the second-stage frame-shaped structure are arranged on the substrate main body from inside to outside in a surrounding mode around the display area, a glue accommodating space is arranged between the first-stage frame-shaped structure and the second-stage frame-shaped structure, the height of the first-stage frame-shaped structure is equal to the preset film thickness h of the display layer, and the area, located outside the second-stage frame-shaped structure, of the substrate main body is used for coating glue on the glue.
Optionally, the frame-like structure includes a plurality of strip-like structures connected end to end.
Optionally, the width of the stripe structure gradually decreases along a direction away from the substrate body.
Optionally, the cross section of the strip-shaped structure is rectangular.
Optionally, the distance d between the first-stage frame-like structure and the second-stage frame-like structure gradually increases along the rolling direction.
Optionally, the first-stage frame-like structure and the second-stage frame-like structure are the same in shape and are eccentrically arranged.
Optionally, the height of the second-stage frame-shaped structure is equal to the preset film thickness of the display layer.
Optionally, the frame-shaped structure is a rectangular frame integrally formed by negative photoresist.
The utility model provides a flexible glass substrate's beneficial effect lies in: the frame-shaped structure is arranged on the substrate main body, and the glue containing space is formed in the frame-shaped structure, so that glue overflowing due to pressure during rolling enters the glue containing space, and the overflowing glue and the frame glue are prevented from being mixed. And because the height of the first-stage frame-shaped structure is equal to the preset film thickness h, the glue in the glue containing space is separated from the glue in the display area after the pressure is lost, the glue cannot flow back to the display area due to surface tension, the condition that the thickness of the inner edge film layer of the display area is larger than that of the central film layer is avoided, and the consistency of the film thickness is ensured.
Another object of the present invention is to provide a backlight module, which comprises the above flexible glass substrate, and can conveniently achieve the uniformity of film thickness.
To achieve the purpose, the utility model adopts the following technical proposal:
a backlight module comprises a flexible glass cover plate and the flexible glass substrate, wherein the flexible glass cover plate is covered on the frame-shaped structure, and a cavity for accommodating a display layer is formed between the flexible glass cover plate and the flexible glass substrate.
Optionally, a sealant is disposed around the outer side of the frame-shaped structure, and the sealant is used to form an airtight structure with the flexible glass cover plate and the flexible glass substrate.
The utility model provides a backlight module's beneficial effect lies in: the frame-shaped structure is arranged on the substrate main body, and the glue containing space is formed in the frame-shaped structure, so that glue overflowing due to pressure during rolling enters the glue containing space, and the overflowing glue and the frame glue are prevented from being mixed. And because the height of first level frame column structure equals predetermined rete thickness, glue in the glue-containing space is separated with the glue in the display area after losing pressure, can not flow back to the display area because of surface tension, avoids appearing the condition that the rete thickness of the display area inward flange is greater than the thickness of central rete, has guaranteed the uniformity of rete thickness.
Drawings
Fig. 1 is a top view of a flexible glass substrate provided by the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 5 is a first enlarged partial view taken at D in FIG. 4;
FIG. 6 is a second enlarged partial view taken at D in FIG. 4;
fig. 7 is a schematic view of a backlight module structure provided by the present invention.
In the figure:
1. a substrate main body; 10. a display area; 11. a frame glue area; 2. a frame-like structure; 20. glue containing space; 21. a first level frame-like structure; 22. a second level frame-like structure;
101. a backlight source; 102. a lower polarizing plate; 103. a lower transparent electrode; 104. a lower alignment layer; 105. a liquid crystal layer; 106. an upper alignment layer; 107. an upper transparent electrode; 108. a color filter; 109. a flexible glass cover plate; 110. an upper polarizing plate; 111. a flexible glass substrate.
Detailed Description
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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
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, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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.
Example one
The present invention provides a flexible glass substrate and a backlight module according to fig. 1 to 5.
As shown in fig. 1 to 3, the flexible glass substrate 111 includes a substrate body 1 and a frame-shaped structure 2, wherein the frame-shaped structure 2 is disposed on the substrate body 1, and a glue containing space 20 for containing glue is formed in the frame-shaped structure 2.
Specifically, a display region 10 is provided on the substrate main body 1, and the display region 10 is used for providing a display layer. . The frame-shaped structure 2 includes a first-stage frame-shaped structure 21 and a second-stage frame-shaped structure 22, as shown in fig. 2 and fig. 3, the first-stage frame-shaped structure 21 is disposed around the display region 10, the second-stage frame-shaped structure 22 is disposed around the first-stage frame-shaped structure 21, a glue accommodating space 20 is formed between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22, and quantum dot glue overflowing from the display region 10 during rolling can enter the glue accommodating space 20. The area of the substrate main body 1 outside the second-stage frame-shaped structure 22 is configured as a frame glue area 11, frame glue can be coated on the frame glue area 11 before rolling, an airtight structure is formed, and water vapor is prevented from entering the display area 10 and contacting with uncured quantum dot glue to affect the curing effect of the quantum dot glue. The second-stage frame-shaped structure 22 can prevent the glue in the glue containing space 20 from flowing out and mixing with the frame glue, thereby preventing the sealing quality of the frame glue from being affected.
It should be noted that, as shown in fig. 4 and 5, the height of the first-stage frame-shaped structure 21 is equal to the preset film thickness h of the display layer, that is, the preset thickness of the display layer after rolling, so that the first-stage frame-shaped structure 21 can separate the overflow glue in the glue accommodating space 20 from the glue in the display area 10 during rolling and after rolling, and prevent the overflow glue in the glue accommodating space 20 from flowing back into the display area 10 due to surface tension after being not subjected to the pressure of the roller, so that the thickness at the edge of the display area 10 is greater than the center of the display area 10.
By arranging the frame-shaped structure 2 on the substrate main body 1, the glue accommodating space 20 is formed in the frame-shaped structure 2, so that glue overflowing due to pressure during rolling enters the glue accommodating space 20, and the overflowing glue and frame glue are prevented from being mixed. And because the height of the first-stage frame-shaped structure 21 is equal to the preset film thickness h, the glue in the glue accommodating space 20 is separated from the glue in the display area 10 after the pressure is lost, the glue cannot flow back to the display area 10 due to surface tension, the situation that the thickness of the film layer at the inner edge of the display area 10 is larger than that of the central film layer is avoided, and the consistency of the film thickness is ensured. Moreover, due to the arrangement of the glue containing space 20, in the rolling process, bubbles in the display area 10 tend to move into the glue containing space 20, and the problem that in the prior art, the sealing performance of the frame glue is reduced due to the fact that the bubbles are pressed out of the display area 10 during rolling, and then water vapor enters the display area 10 through the frame glue to affect the curing quality in the subsequent display area 10 is also avoided.
Optionally, in this embodiment, the display area 10 is rectangular, the frame-shaped structure 2 is a rectangular frame integrally formed by using a negative photoresist, and the frame-shaped structure 2 is disposed on the substrate body 1 by using a photo-curing method, which is more convenient and more precise. Obviously, besides negative photoresist, other materials that can be cured by UV (Ultraviolet) light are also suitable as the material for manufacturing the frame-like structure 2, and fall within the scope of the present invention.
Exemplarily, in this embodiment, a sheet of UTG (Ultra Thin Glass, ultra-Thin flexible Glass) is selected as the substrate main body 1, a layer of negative photoresist is coated on UTG, after coating, the negative photoresist is subjected to UV exposure, the region irradiated by UV is retained, a part of the negative photoresist, which is required to form the frame-shaped structure 2, is exposed and cured by shielding and the like, then the non-exposed region is cleaned by a developing process, and finally, the negative photoresist is subjected to aging and forming. The negative photoresist is coated around the display region 10, i.e., the non-display region, on the substrate body 1. Alternatively, as shown in fig. 3 and fig. 6, in the present embodiment, the width of the non-display area is 0.3mm, the widths of the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 are respectively 0.03mm, the distance d between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 is 0.09mm, the occupied width of the frame-shaped structure 2 is 0.15mm, and the remaining 0.15mm is used for coating the frame glue, i.e., the frame glue region 11 described above.
Optionally, in this embodiment, the frame-like structure 2 comprises several strip-like structures connected end to end. As shown in fig. 6, the width of the strip-shaped structure gradually decreases along the direction away from the substrate body 1, so as to form a trapezoidal cross section with a wider lower part and a narrower upper part, which is beneficial to preventing the frame-shaped structure 2 from deforming or separating from the substrate body 1 when bearing the pressure of the roller.
After the frame-shaped structure 2 is arranged, quantum dots and quantum dot glue are arranged in the display area 10 to form a quantum dot layer (namely, the display layer), the preset film thickness h of the quantum dot layer is made according to actual needs, and the height of the first-stage frame-shaped structure 21 is equal to the preset film thickness h of the quantum dot layer. For example, in the present embodiment, the predetermined film thickness h of the quantum dot layer is 0.07mm, and the height of the first-stage frame-shaped structure 21 is also set to 0.07mm, so that the overflow glue during rolling can be separated from the glue in the display region 10 after entering the glue containing space 20.
It should be noted that, in the above process of forming the quantum dot layer, since the glue accommodating space 20 for accommodating the overflowing glue is provided, the actual coating thickness when coating the quantum dot layer can be larger than the preset film thickness h, so as to ensure the coating effect in the display region 10 and avoid the defects such as glue shortage. The actual coating thickness can be fine-tuned according to the actual process effect to fill the glue containing space 20 as an optimal effect. Illustratively, in this embodiment, the actual coating thickness is about 0.08mm to 0.10 mm.
During or after the quantum dot layer is coated, the frame adhesive can be coated in the reserved frame adhesive region 11, another sheet UTG is used as the flexible glass cover plate 109, the flexible glass cover plate is covered on the frame-shaped structure 2, the frame-shaped structure is laminated by a wet film, and the flexible glass cover plate is sealed and dried after being subjected to UV light curing or thermal curing after rolling.
It can be understood that, during rolling, since the actual coating thickness of the quantum dot layer is greater than the preset film thickness h, part of the glue flows along the rolling direction, so that the glue accommodating space 20 needs to accommodate an increasing amount of glue along the rolling direction. In the present embodiment, therefore, the distance d between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 gradually increases along the rolling direction, so that the glue accommodating space 20 can accommodate the overflow glue which gradually increases along the rolling direction. For example, the first-stage frame-like structure 21 has a rectangular shape, and the second-stage frame-like structure 22 has a trapezoidal shape.
The embodiment further provides a backlight module, which includes the above-mentioned flexible glass substrate 111 and flexible glass cover plate 109, the flexible glass cover plate 109 is covered on the frame-shaped structure 2, and a cavity for accommodating the display layer is formed between the flexible glass cover plate 109 and the flexible glass substrate 111. Illustratively, in use, blue led is attached to the back surface of the flexible glass substrate 111 as the backlight 101, and the blue light passes through the lower polarizer 102 and the flexible glass substrate 111 to excite the red and green quantum dots to be combined into white light with a specific wavelength, i.e. white backlight. Compared with the traditional backlight source, the white light has the advantages of high brightness and high contrast. Further, other functional structures may be provided, such that white light passes through the lower transparent electrode 103, the lower alignment layer 104, the liquid crystal layer 105, the upper alignment layer 106, and the upper transparent electrode 107, liquid crystal molecules in the liquid crystal layer 105 rotate incident light under the driving of the electrodes, a full-color picture is obtained through the color filter 108, and the full-color picture is displayed through the flexible glass cover plate 109 and the upper polarizer 110.
By arranging the frame-shaped structure 2 on the substrate main body 1, the glue accommodating space 20 is formed in the frame-shaped structure 2, so that glue overflowing due to pressure during rolling enters the glue accommodating space 20, and the overflowing glue and frame glue are prevented from being mixed. And because the height of the first-stage frame-shaped structure 21 is equal to the preset film thickness h, the glue in the glue accommodating space 20 is separated from the glue in the display area 10 after the pressure is lost, the glue cannot flow back to the display area 10 due to surface tension, the situation that the thickness of the film layer at the inner edge of the display area 10 is larger than that of the central film layer is avoided, and the consistency of the film thickness is ensured. Moreover, due to the arrangement of the glue containing space 20, in the rolling process, bubbles in the display area 10 tend to move to the glue containing space 20, and the problem that in the prior art, the sealing performance of the frame glue is reduced due to the fact that the bubbles are pressed out of the display area 10 when the rolling process is carried out, and then water vapor enters the display area 10 through the frame glue to affect the display quality of the backlight module is also avoided.
Further, frame glue is arranged around the outer side of the frame-shaped structure 2, i.e. the outer side of the second-stage frame-shaped structure 22, and the frame glue is used for forming an airtight structure with the flexible glass cover plate 109 and the flexible glass substrate 111, so that protection can be formed in the display area 10 during rolling and after curing molding. Preferably, the height of the second-stage frame-shaped structure 22 is the same as the height of the first-stage frame-shaped structure 21, so that the overflow of glue and the mixing of frame glue can be better avoided.
Obviously, it can be understood that, in the case that the distance between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 is too large, a third-stage frame-shaped structure (not shown in the figure) or more frame-shaped structures (not shown in the figure) may be further disposed between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 to ensure that the flexible glass cover plate 109 is not easy to bend and collapse due to the too large distance between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 and the lack of support, thereby affecting the quality of the finished product.
Example two
On the basis of the first embodiment, the present embodiment provides a flexible glass substrate and a backlight module. The structure of the flexible glass substrate 111 and the backlight module in this embodiment is substantially the same as that of the first embodiment, and the difference is only the structure of the frame-shaped structure 2.
Specifically, in the present embodiment, the frame-shaped structure 2 includes a plurality of strip-shaped structures connected end to end, as shown in fig. 5, the cross section of each strip-shaped structure is rectangular, so that it is convenient to use a parallel light source to perform exposure and curing to form the frame-shaped structure 2, and the process can be further simplified.
Of course, it can be understood that the present invention does not specifically limit the structure and shape of the frame-shaped structure 2 or the strip-shaped structure forming the frame-shaped structure 2, for example, the frame-shaped structure 2 is annular, or the cross section of the strip-shaped structure is other shapes, as long as the glue containing space 20 can be formed, all belong to the scope of the present invention.
EXAMPLE III
On the basis of the first embodiment and the second embodiment, the present embodiment provides a flexible glass substrate and a backlight module. The structure of the flexible glass substrate 111 and the backlight module in this embodiment is substantially the same as that of the first and second embodiments, and the difference is only the structure of the frame-shaped structure 2.
Specifically, the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 are the same in shape, for example, both have a rectangular shape with the same aspect ratio, but are eccentrically disposed such that the distance between adjacent sides at the end of the rolling direction is greater than the distance between adjacent sides at the front end of the rolling direction, such that the distance d between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 is gradually increased along the rolling direction, and the glue containing space 20 is ensured to be capable of accommodating the overflow glue which is gradually increased along the rolling direction. Of course, changing the distance d between the first-stage frame-shaped structure 21 and the second-stage frame-shaped structure 22 also has other modes, and changing the cross-sectional shape of the strip-shaped structure forming the frame-shaped structure 2 along the rolling direction can also achieve the above technical effects, and also belongs to the intended scope of the present invention.
It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A flexible glass substrate, comprising:
a substrate body (1), the substrate body (1) having a display area (10), the display area (10) being for providing a display layer;
frame column structure (2), frame column structure (2) include first level frame column structure (21) and second level frame column structure (22), first level frame column structure (21) with second level frame column structure (22) are in from interior to exterior encircleing on base plate main part (1) display area (10) set up, first level frame column structure (21) with glue containing space (20) have between second level frame column structure (22), the height of first level frame column structure (21) equals the thick h of the predetermined membrane on display layer, lie in on base plate main part (1) the outer region of second level frame column structure (22) is used for coating and glues.
2. The flexible glass substrate according to claim 1, wherein the frame-like structure (2) comprises a number of strip-like structures connected end-to-end.
3. The flexible glass substrate according to claim 2, wherein the strip-like structures have a width that gradually decreases in a direction away from the substrate body (1).
4. The flexible glass substrate according to claim 2, wherein the cross-section of the strip-like structure is rectangular.
5. The flexible glass substrate according to claim 1, wherein a distance d between the first-stage frame-like structure (21) and the second-stage frame-like structure (22) gradually increases in a rolling direction.
6. The flexible glass substrate according to claim 5, wherein the first-stage frame-like structure (21) and the second-stage frame-like structure (22) are identical in shape and are eccentrically arranged.
7. The flexible glass substrate according to claim 1, wherein the height of the second-stage frame-like structure (22) is equal to a predetermined film thickness of the display layer.
8. The flexible glass substrate according to any of claims 1 to 7, wherein the frame-like structure (2) is a rectangular frame integrally formed with a negative photoresist.
9. A backlight module, characterized in that it comprises a flexible glass cover plate (109) and a flexible glass substrate (111) according to any one of claims 1-8, the flexible glass cover plate (109) being arranged over the frame-like structure (2), and a cavity for accommodating a display layer being formed between the flexible glass cover plate (109) and the flexible glass substrate (111).
10. A backlight module according to claim 9, wherein a sealant is disposed around the outer side of the frame-like structure (2) for forming a hermetic structure with the flexible glass cover plate (109) and the flexible glass substrate (111).
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| CN202221829189.1U CN217821189U (en) | 2022-07-15 | 2022-07-15 | Flexible glass substrate and backlight module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116020134A (en) * | 2023-01-10 | 2023-04-28 | 河源市星彩科技有限公司 | Special-shaped quicksand product and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116020134A (en) * | 2023-01-10 | 2023-04-28 | 河源市星彩科技有限公司 | Special-shaped quicksand product and production process thereof |
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