CN220004778U - Ultraviolet irradiation structure and ultraviolet curing equipment - Google Patents

Abstract

The utility model provides an ultraviolet illumination structure and ultraviolet curing equipment, and relates to the technical field of display, wherein the ultraviolet illumination structure comprises a light source, at least two groups of fly-eye lenses, and a light source, wherein the light source is configured to emit ultraviolet light beams; the at least two groups of fly-eye lenses include: a first group of fly-eye lenses, which are positioned on the propagation path of the ultraviolet light beam and are configured to form a first light spot with uniform and reduced brightness; and a second group of fly-eye lenses, which are positioned on the propagation path of the first light spot and are configured to form a second light spot with uniform and reduced brightness. The embodiment of the utility model provides an ultraviolet irradiation structure and ultraviolet curing equipment, which increase the brightness uniformity of an irradiation beam and reduce the irradiation range of the irradiation beam. When the ultraviolet curing glue is cured in an ultraviolet irradiation mode, ultraviolet light beams cannot irradiate liquid crystal molecules in a display area of the liquid crystal display panel, damage to the liquid crystal molecules is reduced, and display quality is improved.

Description

Ultraviolet irradiation structure and ultraviolet curing equipment

Technical Field

The utility model relates to the technical field of display, in particular to an ultraviolet irradiation structure and ultraviolet curing equipment.

Background

Fig. 1 is a schematic diagram of a display device according to the present utility model, and referring to fig. 1, the display device includes a liquid crystal display panel 110 and a viewing angle switching panel 120. The viewing angle switching panel 120 is located on the light emitting display side of the liquid crystal display panel 110. The viewing angle switching panel 120 is configured to switch the light-emitting viewing angle of the liquid crystal display panel 110, enabling switching such as peep-proof display and non-peep-proof display. The liquid crystal display panel 110 includes a first polarizer 111, an array substrate 112, a color film substrate 113, and a second polarizer 114. The area of the array substrate 112 is larger than that of the color film substrate 113, and the area of the color film substrate 113, which is not covered by the array substrate 112, is a step area. Components such as a driving chip 115 and a flexible circuit board 116 are provided at the step region.

In the step region, a large step is generated. When the liquid crystal display panel 110 and the viewing angle switching panel 120 are attached, the viewing angle switching panel 120 is not supported in the step area. Is easily broken by external force. To solve the problem of breakage of the viewing angle switching panel 120. May be before the viewing angle switching panel 120 is attached. An ultraviolet curable adhesive 130 is applied to the stepped region. And the ultraviolet curable adhesive 130 is cured by means of ultraviolet irradiation. The cured uv curable glue 130 reduces the step area level difference, providing support for the viewing angle switching panel 120 suspended above the step area.

However, the irradiation range of the ultraviolet light beam directly generated by the light source is large, and when the ultraviolet curing glue 130 is cured by the ultraviolet light irradiation mode, the ultraviolet light beam irradiates the liquid crystal molecules in the display area of the liquid crystal display panel 110, so that the liquid crystal molecules are damaged, and the display quality is affected.

Disclosure of Invention

The embodiment of the utility model provides an ultraviolet irradiation structure and ultraviolet curing equipment, which increase the brightness uniformity of an irradiation beam and reduce the irradiation range of the irradiation beam. When the ultraviolet curing glue is cured in an ultraviolet irradiation mode, ultraviolet light beams cannot irradiate liquid crystal molecules in a display area of the liquid crystal display panel, damage to the liquid crystal molecules is reduced, and display quality is improved.

In a first aspect, embodiments of the present utility model provide an ultraviolet illumination structure, comprising a light source configured to emit an ultraviolet light beam, and at least two sets of fly-eye lenses; the at least two groups of fly-eye lenses include:

a first group of fly-eye lenses, which are positioned on the propagation path of the ultraviolet light beam and are configured to form a first light spot with uniform and reduced brightness;

and a second group of fly-eye lenses, which are positioned on the propagation path of the first light spot and are configured to form a second light spot with uniform and reduced brightness.

Further, an illumination position adjustment assembly is also included, the illumination position adjustment assembly configured to adjust an illumination position of the second spot.

Further, the illumination position adjustment assembly is located on the propagation path of the second light spot.

Further, the illumination position adjustment assembly includes a plurality of reflective elements.

Further, the plurality of reflective elements includes a front stage mirror, a first reflective element, and a second reflective element;

the front table mirror comprises a first reflecting surface and a second reflecting surface, and the first reflecting surface and the second reflecting surface are arranged opposite to each other;

the ultraviolet light beam is reflected by the first reflecting surface to the first reflecting element, the second reflecting element and the second reflecting surface.

Further, the first reflecting element and the second reflecting element are triangular prisms.

Further, a collection optic configured to collect the light beam is included.

Further, an illumination position adjustment assembly configured to adjust an illumination position of the second spot;

the condenser lens is positioned between the at least two fly-eye lenses and the irradiation position adjusting component.

Further, the fly-eye lens comprises a first cylindrical lens layer, a second cylindrical lens layer, a third cylindrical lens layer and a fourth cylindrical lens layer which are arranged in a laminated mode;

the first and fourth cylindrical layers comprise a plurality of cylindrical lenses extending along a first direction and arranged along a second direction; the first direction intersects the second direction;

the second and third lenticular layers include a plurality of lenticular lenses extending along the second direction and arranged along the first direction.

In a second aspect, an embodiment of the present utility model provides an ultraviolet curing apparatus, including an ultraviolet irradiation structure and a machine set according to the first aspect;

the machine is configured to bear ultraviolet curing glue, and the ultraviolet curing glue is positioned in the irradiation range of the second light spot emitted by the ultraviolet irradiation structure.

The embodiment of the utility model provides an ultraviolet illumination structure, wherein a first group of fly-eye lenses and a second group of fly-eye lenses are arranged on an emergent path of a light source. The first fly-eye lens group uniformizes and reduces the ultraviolet light beam for the first time to form a first light spot. And after the second group of fly-eye lenses are subjected to light equalization and shrinkage again, forming a second light spot. As the light is uniformly and reduced at least twice, the uniformity of the brightness of the irradiation beam is increased, and the irradiation range of the irradiation beam is reduced. When the ultraviolet curing glue is cured in an ultraviolet irradiation mode, ultraviolet light beams cannot irradiate liquid crystal molecules in a display area of the liquid crystal display panel, damage to the liquid crystal molecules is reduced, and display quality is improved.

Drawings

FIG. 1 is a schematic diagram of a display device according to the present utility model;

fig. 2 is a schematic diagram of an ultraviolet illumination structure according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of another ultraviolet illumination structure according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of another ultraviolet illumination structure according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of another ultraviolet illumination structure according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of another ultraviolet illumination structure according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a fly-eye lens according to an embodiment of the utility model;

fig. 8 is a schematic diagram of an ultraviolet curing apparatus according to an embodiment of the present utility model.

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description refers to the specific implementation, structure, characteristics and effects of the ultraviolet irradiation structure and ultraviolet curing device according to the present utility model with reference to the accompanying drawings and the preferred embodiments.

Fig. 2 is a schematic diagram of an ultraviolet illumination structure according to an embodiment of the utility model, and referring to fig. 2, the ultraviolet illumination structure includes a light source 210, and the light source 210 is configured to emit an ultraviolet beam. The ultraviolet illumination structure further includes at least two sets of fly-eye lenses 220. The at least two groups of fly-eye lenses 220 include a first group of fly-eye lenses 221 and a second group of fly-eye lenses 222. Wherein the first group of fly-eye lenses 221 is located on the propagation path of the ultraviolet light beam, the first group of fly-eye lenses 221 is configured to form a first light spot with uniform and reduced brightness. The first group of fly-eye lenses 221 are located on the outgoing path of the light source 210, and the ultraviolet light beam emitted by the light source 210 irradiates the first group of fly-eye lenses 221, and after passing through the light uniformization of the first group of fly-eye lenses 221, a first light spot with uniform and reduced brightness is formed. Wherein the dashed arrows indicate the propagation direction and propagation path of the light beam.

The second group of fly-eye lenses 222 is located on the propagation path of the first light spot, and the second group of fly-eye lenses 222 is configured to form a second light spot having uniform brightness and reduced size. The second group of fly-eye lenses 222 are positioned on the emergent path of the first group of fly-eye lenses 221, and the first light spots formed after the light is uniformly and reduced by the first group of fly-eye lenses 221 are irradiated on the second group of fly-eye lenses 222, and the second light spots with uniform brightness and reduced are formed after the light is uniformly and reduced by the second group of fly-eye lenses 222. The area of the second light spot is smaller than the area of the first light spot.

As the light is uniformly and reduced at least twice, the uniformity of the brightness of the irradiation beam is increased, and the irradiation range of the irradiation beam is reduced. When the ultraviolet curing glue 130 is cured by ultraviolet irradiation, the ultraviolet light beam can not irradiate the liquid crystal molecules in the display area of the liquid crystal display panel 110, so that the damage to the liquid crystal molecules is reduced, and the display quality is improved.

Fig. 3 is a schematic view of another ultraviolet illumination structure according to an embodiment of the present utility model, and referring to fig. 3, the ultraviolet illumination structure further includes an illumination position adjusting component 230. The illumination position adjustment assembly 230 is configured to adjust the illumination position of the second spot. Thus, the irradiation position of the irradiation beam can be adjusted by the adjustment of the irradiation position adjustment assembly 230 so that the irradiation beam can be moved without adjusting the position of the light source 210, without adjusting the position of the irradiated liquid crystal display panel, not only simplifying the operation, but also improving the position control accuracy of the irradiation beam.

Optionally, referring to fig. 3, the illumination position adjustment assembly 230 is located on the propagation path of the second spot. Illumination position adjustment assembly 230 is positioned on the exit path of first set of fly-eye lenses 221 and second set of fly-eye lenses 222. The ultraviolet light beam emitted from the light source 210 passes through the first group of fly-eye lenses 221 and the second group of fly-eye lenses 222, and then passes through the irradiation position adjusting assembly 230. Since the ultraviolet light beam has been reduced by the first group fly-eye lens 221 and the second group fly-eye lens 222 before passing through the irradiation position adjusting assembly 230, the area of the light beam irradiated to the irradiation position adjusting assembly 230 is reduced, so that the irradiation position adjusting assembly 230 having a smaller volume can be configured, i.e., the volume of the irradiation position adjusting assembly 230 is reduced, the volume of the ultraviolet irradiation structure is reduced, and the cost is reduced.

Optionally, referring to fig. 3, the illumination position adjustment assembly 230 includes a plurality of reflective elements. The ultraviolet light beam emitted by the light source 210 passes through the first group of fly-eye lenses 221 and the second group of fly-eye lenses 222, and then is reflected by the plurality of reflecting elements for multiple times, and is projected to the ultraviolet curing glue 130, so that the ultraviolet curing glue 130 is cured.

Alternatively, referring to fig. 3, the plurality of reflective elements includes a front stage mirror 231, a first reflective element 241, and a second reflective element 242. The front mirror 231 includes a first reflecting surface 251 and a second reflecting surface 252. The first reflecting surface 251 is disposed opposite to the second reflecting surface 252. The first reflecting element 241 is located at one side of the first reflecting surface 251 in the horizontal direction, and the second reflecting surface 252 is located at one side of the second reflecting surface 252 in the horizontal direction. The first and second reflection elements 241 and 242 are arranged in a vertical direction. The ultraviolet light beam is reflected by the first reflecting surface 251 to the first reflecting element 241, the second reflecting element 242, and the second reflecting surface 252. That is, the ultraviolet light beam is reflected by the first reflecting surface 251 to the first reflecting element 241, then reflected by the first reflecting element 241 to the second reflecting element 242, then reflected by the second reflecting element 242 to the second reflecting surface 252, and then reflected by the second reflecting surface 252 to be projected to the ultraviolet curing glue 130 as an irradiation beam, thereby curing the ultraviolet curing glue 130.

It will be appreciated that in the present embodiment, the angle of either one of the first reflecting element 241 and the second reflecting element 242 may be adjusted to change the angle of propagation of the light beam, so that control of the irradiation position of the irradiation light beam may be achieved.

Alternatively, referring to fig. 3, the first and second reflective elements 241 and 242 are triangular prisms. In other embodiments, at least one of the first reflective element 241 and the second reflective element 242 may also be other reflective elements, such as mirrors.

Fig. 4 is a schematic view of another ultraviolet illumination structure according to an embodiment of the present utility model, and referring to fig. 4, the ultraviolet illumination structure further includes a condenser lens 260, where the condenser lens 260 is configured to collect light beams. So that the area of the irradiation beam can be further reduced. The ultraviolet light beam does not irradiate the liquid crystal molecules in the display area of the liquid crystal display panel 110, so that damage to the liquid crystal molecules is reduced, and the display quality is improved.

Optionally, referring to fig. 4, the ultraviolet illumination structure further comprises an illumination position adjustment assembly 230, the illumination position adjustment assembly 230 being configured to adjust the illumination position of the second light spot. The collection optic 260 is positioned between at least two sets of fly-eye lenses 220 and the illumination position adjustment assembly 230. The ultraviolet light beam emitted from the light source 210 passes through the first group of fly-eye lenses 221 and the second group of fly-eye lenses 222, and then passes through the condenser lens 260. Since the ultraviolet light beam has been reduced by the first group fly-eye lens 221 and the second group fly-eye lens 222 before passing through the condenser lens 260, the area of the light beam irradiated to the condenser lens 260 is reduced, so that the condenser lens 260 having a smaller volume can be configured. The ultraviolet light beam has also been reduced by the condenser lens 260 before passing through the irradiation position adjustment assembly 230, so that the area of the light beam irradiated to the irradiation position adjustment assembly 230 is reduced, and thus the irradiation position adjustment assembly 230 can be configured to be smaller in volume. Thereby reducing the volume of the ultraviolet illumination structure and simultaneously reducing the cost.

In various modified embodiments, the position of at least one of the first group fly-eye lens 221 and the second group fly-eye lens 222 may be changed.

Fig. 5 is a schematic view of another ultraviolet illumination structure provided in an embodiment of the present utility model, and referring to fig. 5, a condenser lens 260 is located between at least two fly-eye lenses 220 (including the first group of fly-eye lenses 221 and the second group of fly-eye lenses 222 together with the light source 210). The ultraviolet light beam emitted from the light source 210 passes through the condenser lens 260 and then passes through the first group of fly-eye lenses 221 and the second group of fly-eye lenses 222.

In other embodiments, at least two groups of fly-eye lenses 220 may also be located between the first reflective surface 251 and the first reflective element 241; alternatively, at least two sets of fly-eye lenses 220 may also be positioned between first reflective element 241 and second reflective element 242; alternatively, at least two sets of fly-eye lenses 220 may also be positioned between second reflective element 242 and second reflective surface 252; alternatively, at least two sets of fly-eye lenses 220 may also be located on a side of second reflective surface 252 remote from first reflective surface 251.

Fig. 6 is a schematic diagram of another ultraviolet illumination structure according to an embodiment of the present utility model, and referring to fig. 6, a first group of fly-eye lenses 221 is located between the light source 210 and the condenser lens 260. The second group of fly-eye lenses 222 is located between the condenser lens 260 and the first reflecting surface 251. The ultraviolet light beam emitted from the light source 210 passes through the first group of fly-eye lenses 221, then passes through the condenser lens 260, and then passes through the second group of fly-eye lenses 222.

In other embodiments, the second set of fly-eye lenses 222 may also be located between the first reflective surface 251 and the first reflective element 241; alternatively, the second group fly-eye lens 222 may also be located between the first reflective element 241 and the second reflective element 242; alternatively, second set of fly-eye lenses 222 may also be positioned between second reflective element 242 and second reflective surface 252; alternatively, the second fly-eye lens 222 may be further disposed on a side of the second reflecting surface 252 away from the first reflecting surface 251.

Fig. 7 is a schematic diagram of a fly-eye lens according to an embodiment of the utility model, referring to fig. 7, the fly-eye lens 220 includes a first cylindrical layer 310, a second cylindrical layer 320, a third cylindrical layer 330 and a fourth cylindrical layer 340 stacked together. The second cylindrical layer 320 is located between the first cylindrical layer 310 and the third cylindrical layer 330, and the third cylindrical layer 330 is located between the second cylindrical layer 320 and the fourth cylindrical layer 340. The first and fourth cylinder layers 310 and 340 include a plurality of cylinder lenses extending in the first direction X and arranged in the second direction Y. The first direction intersects the second direction. The second and third lenticular layers 320 and 330 include a plurality of lenticular lenses extending in the second direction Y and arranged in the first direction X.

Illustratively, referring to fig. 7, the first and fourth lenticular layers 310, 340 are symmetrically disposed, and the second and third lenticular layers 320, 330 are symmetrically disposed.

Fig. 8 is a schematic diagram of an ultraviolet curing apparatus according to an embodiment of the present utility model, and referring to fig. 8, some elements of the display device, such as the color film substrate 113, are omitted in fig. 8. The ultraviolet curing apparatus includes the ultraviolet irradiation structure and the machine 400. The machine 400 is configured to carry the ultraviolet curing adhesive 130, where the ultraviolet curing adhesive 130 is located in an irradiation range of the second light spot emitted by the ultraviolet irradiation structure. Thus, the second light spot emitted by the ultraviolet irradiation structure in the above embodiment can be used to irradiate the ultraviolet curable adhesive 130 on the liquid crystal display panel 110. And the ultraviolet curable adhesive 130 is cured by means of ultraviolet irradiation.

The present utility model is not limited to the above-mentioned embodiments, but is intended to be limited to the following embodiments, and any modifications, equivalent changes and variations in the above-mentioned embodiments can be made by those skilled in the art without departing from the scope of the present utility model.

Claims (10)

1. An ultraviolet illumination structure comprising a light source configured to emit a beam of ultraviolet light, characterized by at least two groups of fly-eye lenses; the at least two groups of fly-eye lenses include:

a first group of fly-eye lenses, which are positioned on the propagation path of the ultraviolet light beam and are configured to form a first light spot with uniform and reduced brightness;

and a second group of fly-eye lenses, which are positioned on the propagation path of the first light spot and are configured to form a second light spot with uniform and reduced brightness.

2. The ultraviolet illumination structure of claim 1, further comprising an illumination position adjustment assembly configured to adjust an illumination position of the second light spot.

3. The ultraviolet illumination structure of claim 2, wherein the illumination position adjustment assembly is located in the propagation path of the second light spot.

4. The ultraviolet illumination structure of claim 2, wherein the illumination position adjustment assembly comprises a plurality of reflective elements.

5. The ultraviolet illumination structure of claim 4, wherein the plurality of reflective elements comprises a front mirror, a first reflective element, and a second reflective element;

the front table mirror comprises a first reflecting surface and a second reflecting surface, and the first reflecting surface and the second reflecting surface are arranged opposite to each other;

the ultraviolet light beam is reflected by the first reflecting surface to the first reflecting element, the second reflecting element and the second reflecting surface.

6. The ultraviolet light structure of claim 5, wherein the first reflective element and the second reflective element are triangular prisms.

7. The ultraviolet illumination structure of claim 1, further comprising a collection mirror configured to collect the light beam.

8. The ultraviolet illumination structure of claim 7, further comprising an illumination position adjustment assembly configured to adjust an illumination position of the second light spot;

the condenser lens is positioned between the at least two fly-eye lenses and the irradiation position adjusting component.

9. The ultraviolet illumination structure according to claim 1, wherein the fly-eye lens includes a first cylindrical layer, a second cylindrical layer, a third cylindrical layer, and a fourth cylindrical layer which are laminated;

the first and fourth cylindrical layers comprise a plurality of cylindrical lenses extending along a first direction and arranged along a second direction; the first direction intersects the second direction;

the second and third lenticular layers include a plurality of lenticular lenses extending along the second direction and arranged along the first direction.

10. An ultraviolet curing device, comprising the ultraviolet irradiation structure and the machine of any one of claims 1-9;

the machine is configured to bear ultraviolet curing glue, and the ultraviolet curing glue is positioned in the irradiation range of the second light spot emitted by the ultraviolet irradiation structure.