CN110196517B - Ultraviolet irradiation machine - Google Patents
Ultraviolet irradiation machine Download PDFInfo
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- CN110196517B CN110196517B CN201910405720.9A CN201910405720A CN110196517B CN 110196517 B CN110196517 B CN 110196517B CN 201910405720 A CN201910405720 A CN 201910405720A CN 110196517 B CN110196517 B CN 110196517B
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- liquid crystal
- display panel
- crystal display
- horizontal portion
- light
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
- G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
Abstract
The application provides an ultraviolet irradiation machine for carry out the liquid crystal to the liquid crystal display panel and join in marriage, it includes: the bearing platform is used for bearing the liquid crystal display panel to be aligned; the illumination assembly is arranged above the liquid crystal display panel corresponding to the bearing platform and comprises light sources which face one side of the liquid crystal display panel and are distributed in an array mode, and the light sources are used for forming a first illumination area and a second illumination area surrounding the first illumination area on the liquid crystal display panel; the illumination assembly also comprises non-horizontal parts, and two adjacent non-horizontal parts are arranged in a mirror image manner; the first irradiation area and the second irradiation area formed on the liquid crystal display panel by the light sources on the two adjacent non-horizontal parts are complementary, so that the illumination intensity of light rays irradiated on the liquid crystal display panel is uniform.
Description
Technical Field
The application relates to the field of display panel manufacturing, in particular to an ultraviolet irradiation machine.
Background
PS-VA (polymer stabilized vertical alignment) is a technology of TFT-LCD, and is one of the mainstream technologies in the television panel manufacturing industry. The PS-VA comprises four processes of an array, a color film, a box forming process and a module, wherein the ultraviolet light alignment of liquid crystal in the box forming process is the core technology of the PS-VA. An ultraviolet light alignment process: in the PS-VA liquid crystal cell, the liquid crystal is vertically standing under the action of the polyimide alignment film, and the pretilt angle of the liquid crystal needs to be formed in the ultraviolet alignment process (UV1) to meet the display requirements. The pretilt angle is formed by irradiating ultraviolet light to the substrate through an ultraviolet alignment device to enable the reaction type monomer in the liquid crystal to react and fix the inverted direction of the liquid crystal.
In the ultraviolet alignment process, an alignment ultraviolet irradiation machine provides ultraviolet light required by liquid crystal reaction, the irradiation intensity can influence the size of the pretilt angle, and the illumination uniformity can influence the uniformity of the pretilt angle distribution on the substrate, so that the uniformity of panel display is influenced. At present, the industry develops LED lamps with ultra-long service life and narrow spectral range, but the light emitted by the LEDs is relatively straight and concentrated, so that the illumination of the area between the lamps is weak when the LED lamps are used, a regular low-illumination area is formed, and the produced panel has display defects.
Therefore, the prior art has defects and needs to be improved urgently.
Disclosure of Invention
The application provides an ultraviolet irradiation machine, can solve the illuminance inhomogeneous that current ultraviolet irradiation machine exists to influence the problem that display panel shows.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides an ultraviolet irradiation machine for carry out the liquid crystal to the liquid crystal display panel and join in marriage, include:
the bearing platform is used for bearing the liquid crystal display panel to be aligned;
the illumination assembly is arranged above the liquid crystal display panel corresponding to the bearing platform and comprises light sources which face one side of the liquid crystal display panel and are distributed in an array mode, and the light sources are used for forming a first illumination area and a second illumination area surrounding the first illumination area on the liquid crystal display panel;
the illumination assembly further comprises non-horizontal parts, two adjacent non-horizontal parts are arranged in a mirror image mode, and the extending direction of the non-horizontal parts is not parallel to the plane direction of the liquid crystal display panel;
the first irradiation region and the second irradiation region formed on the liquid crystal display panel by the light sources on two adjacent non-horizontal portions are complementary.
In the ultraviolet irradiation machine of the present application, irradiation ranges of the light sources on the two non-horizontal portions corresponding to adjacent non-horizontal portions overlap at least partially to form a light intersecting region, and in the light intersecting region, the second irradiation region formed by the light source on one non-horizontal portion corresponds to the first irradiation region formed by the light source on the other non-horizontal portion.
In the ultraviolet irradiation machine of the present application, the liquid crystal display panel at least corresponds to one light ray crossing region, and the illumination intensity in the light ray crossing region is uniform.
In the ultraviolet irradiation machine of the present application, the irradiation unit further includes a horizontal portion disposed between two adjacent non-horizontal portions, the horizontal portion is disposed in parallel with the liquid crystal display panel, wherein the light ray crossing region further includes a light ray region formed by the light source corresponding to the horizontal portion.
In the ultraviolet irradiation machine of the present application, the second irradiation region formed by the light source on the horizontal portion corresponds to the first irradiation region formed by the light source on the non-horizontal portion.
In the ultraviolet irradiation machine of the present application, the illumination assembly further includes a reflection plate, the reflection plate corresponds to the non-horizontal portion and the horizontal portion, and the light source is disposed on the reflection plate.
In the ultraviolet irradiation machine of the present application, the ultraviolet irradiation machine further includes an adjustment mechanism, two adjacent non-horizontal portions/the horizontal portion and the non-horizontal portion are movably connected, and the adjustment mechanism is configured to adjust an angle between two adjacent non-horizontal portions/the horizontal portion and the non-horizontal portion.
In the ultraviolet irradiation machine of the present application, the light sources on two adjacent non-horizontal portions are disposed symmetrically or asymmetrically.
In the ultraviolet irradiation machine of the present application, the non-horizontal portion is provided in a multi-stage inclined surface.
In the ultraviolet irradiation machine of the present application, the cross-sectional shape of the illumination component is one or a combination of more than one of V-shape, trapezoid and arc.
The beneficial effect of this application does: the application provides an ultraviolet irradiation machine, the horizontal plane configuration that shines subassembly (lighting fixture) in the ultraviolet irradiation machine is joined in marriage to current liquid crystal is changed into the non-horizontal plane configuration that the mirror image set up, make the LED light source that sets up on the illumination subassembly form the light of penetrating directly and oblique, the place that right LED light source illuminance is more weak is compensated by the place that left side LED light source illuminance is stronger, the light that the LED light source on two adjacent non-horizontal portions sent complements each other promptly, the ultraviolet intensity homogeneous that finally makes whole liquid crystal display panel accept, thereby promote panel production quality.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, 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 only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an ultraviolet irradiation machine according to an embodiment of the present disclosure;
fig. 2 is a partial structural schematic view of another ultraviolet irradiation machine provided in the first embodiment of the present application;
fig. 3 is a schematic structural diagram of an ultraviolet irradiation machine according to a second embodiment of the present application;
fig. 4 is a partial structural schematic view of another ultraviolet irradiation machine provided in the second embodiment of the present application;
fig. 5 is a schematic structural view of an ultraviolet irradiation machine according to a third embodiment of the present application;
fig. 6 is a schematic view of an irradiation intensity of a non-horizontal portion or a horizontal portion of an illumination assembly on a liquid crystal display panel according to an embodiment of the present disclosure.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
This application is to current ultraviolet irradiation machine, thereby has the technical problem that the illuminance is inhomogeneous to influence the display panel and show, and this defect can be solved to this embodiment.
Fig. 1 is a schematic structural diagram of an ultraviolet irradiation machine according to an embodiment of the present application. The ultraviolet ray irradiator is used for emitting ultraviolet ray to carry out liquid crystal alignment on the liquid crystal display panel 10, and comprises: the bearing platform 20 is used for bearing the liquid crystal display panel 10 to be aligned; the illumination assembly 30 is disposed above the liquid crystal display panel 10 corresponding to the supporting platform 20, and the illumination assembly 30 includes light sources 301 distributed in an array manner facing one side of the liquid crystal display panel 10, in this embodiment, the light sources 301 are LED light sources. The light source 301 emits ultraviolet light to irradiate the liquid crystal display panel 10, thereby performing liquid crystal alignment on the liquid crystal display panel 10. The illumination assembly 30 further includes a non-horizontal portion 302(302 '), and an extending direction of the non-horizontal portion 302(302 ') is not parallel to a planar direction of the liquid crystal display panel 10, that is, the non-horizontal portion 302(302 ') is disposed in an inclined plane or an arc surface. Wherein the light source 301 is disposed on a side of the non-horizontal portion 302 (302') facing the liquid crystal display panel 10.
As shown in fig. 6, the light source 301 forms a first irradiation region 401 and a second irradiation region 402 surrounding the first irradiation region 401 on the liquid crystal display panel 10; the first irradiation area 401 is an area with a strong illumination intensity, and the second irradiation area 402 is an area with a weak illumination intensity. Since the liquid crystal display panel 10 is irradiated with a point light source form of a plurality of LED light sources, the light intensity of a light spot generated by one LED light source is gradually decreased from the center to the periphery, and thus there may be unevenness in the surface light intensity of the liquid crystal display panel 10.
The illumination assembly 30 further includes a reflective plate disposed corresponding to the non-horizontal portion 302 (302'), and the light source 301 is disposed on a surface of the reflective plate facing the liquid crystal display panel 10. The reflector is used for reflecting the light emitted from the light source 301 to the reflector, thereby increasing the utilization rate of the light and the uniformity of the illumination intensity on the surface of the liquid crystal display panel 10. Wherein, the non-horizontal portion 302 (302') can be the reflective plate directly, i.e. the reflective plate and the light source 301 constitute the illumination assembly 30; alternatively, the non-horizontal portion 302(302 ') is a supporting member, and the reflective plate is attached to the surface of the non-horizontal portion 302 (302'), which is not limited herein.
In this embodiment, the illumination assembly 30 includes a first non-horizontal portion 302 and a second non-horizontal portion 302 'that are arranged in a mirror image manner, and the first non-horizontal portion 302 and the second non-horizontal portion 302' are both designed to be inclined planes and form a predetermined inclination angle with the liquid crystal display panel 10. The irradiation ranges of the light sources 301 corresponding to the first non-horizontal portion 302 and the second non-horizontal portion 302 'on the liquid crystal display panel 10 at least partially overlap and form a light crossing region 50, as shown by arrows in the figure, in the light crossing region 50, the first irradiation region 401 and the second irradiation region 402 formed on the liquid crystal display panel 10 by the light sources 301 on two adjacent non-horizontal portions (302 and 302') are complementary. That is, the second irradiation region 402 formed by the light source 301 on the first non-horizontal portion 302 corresponds to the first irradiation region 401 formed by the light source 301 on the second non-horizontal portion 302'.
The light intersection region 50 covers the liquid crystal display panel 10, and the light intensity in the light intersection region 50 is uniform.
In this embodiment, due to the special design of the structure of the illumination assembly 30, that is, the cross-sectional shape of the illumination assembly 30 is an inverted V shape, light rays emitted to the liquid crystal display panel 10 come from multiple directions, so that the uniformity of the illumination intensity can be greatly increased.
Fig. 2 is a schematic partial structure diagram of another ultraviolet irradiation machine according to an embodiment of the present application. In contrast to the lighting assembly shown in fig. 1, the lighting assembly 30 shown in fig. 2 includes a plurality of two sets of the non-horizontal portions (302 and 302 ') in an inverted V shape, wherein two sets of the non-horizontal portions (302 and 302 ') forming the inverted V shape form one light crossing region 50, a plurality of sets of the non-horizontal portions (302 and 302 ') form a plurality of light crossing regions 50, and two adjacent light crossing regions 50 are adjacent to or partially overlapped, which is not limited herein. The non-horizontal portion 302 and the non-horizontal portion 302' may be designed integrally or separately. The liquid crystal display panel 10 corresponds to the at least two light intersection regions 50, the at least two light intersection regions 50 cover the liquid crystal display panel 10, and the illumination intensity in the light intersection regions 50 is uniform.
Fig. 3 is a schematic structural diagram of an ultraviolet irradiation machine according to a second embodiment of the present application. Compared with the first embodiment, the illumination assembly 30 in this embodiment further includes a horizontal portion 303 disposed between two adjacent non-horizontal portions (302 and 302'), the horizontal portion 303 is disposed parallel to the liquid crystal display panel 10, and the light ray crossing region 50 further includes a light ray region formed corresponding to the light source 301 on the horizontal portion 303.
Referring to fig. 3 and 6, in the figure, the first irradiation region 401 and the second irradiation region 402 formed by the light source 301 of the first non-horizontal portion 302 are complementary to the first irradiation region 401 and the second irradiation region 402 formed by the light source 301 of the second non-horizontal portion 302 ', and the second irradiation region 402 formed by the light source 301 on the horizontal portion 303 corresponds to the first irradiation region 401 formed by the light source 301 on the first non-horizontal portion 302 and the second non-horizontal portion 302'.
The reflective plate is disposed corresponding to the first non-horizontal portion 302, the second non-horizontal portion 302', and the horizontal portion 303, and the light source 301 is disposed on the reflective plate.
In this embodiment, the cross-sectional shape of the illumination assembly 30 is a regular trapezoid, and the first non-horizontal portion 302 and the second non-horizontal portion 302' are disposed on two sides of the horizontal portion 303, so as to form a light crossing region 50 covering the liquid crystal display panel 10, and the illumination intensity in the light crossing region 50 is uniform.
Fig. 4 is a schematic view of a partial structure of another ultraviolet irradiation machine according to the second embodiment of the present application. Compared to the illumination assembly in fig. 3, the cross-sectional shape of the illumination assembly 30 in fig. 4 is a plurality of inverted trapezoids, the light source 301 is disposed on the reflective plate and located at a side close to the liquid crystal display panel, wherein the first non-horizontal portion 302 and the second non-horizontal portion 302 'at two sides of the horizontal portion 303 are arranged in a mirror image manner, the plurality of first non-horizontal portions 302, the second non-horizontal portions 302' and the light source 301 on the horizontal portion 303 form the light crossing region 50, as shown by arrows in the figure, the light crossing region 50 covers the liquid crystal display panel, and the illumination intensity in the light crossing region 50 is uniform, and specific principles are not repeated, and refer to the description in the above embodiments.
Fig. 5 is a schematic structural diagram of an ultraviolet irradiation machine according to a third embodiment of the present application. Compared to the first embodiment, in the present embodiment, the non-horizontal portion 302 of the illumination assembly 30 is curved, and the curved direction of the non-horizontal portion 302 is curved toward the side away from the liquid crystal display panel 10, but not limited thereto, and may be curved toward the side close to the liquid crystal display panel 10. The illumination assembly 30 at least comprises two spaced non-horizontal portions 302 arranged in a mirror image manner, the reflecting plate is in accordance with the arc shape of the non-horizontal portions 302, and the light sources 301 are arranged at intervals along the arc direction of the reflecting plate.
The light source 301 on one of the non-horizontal portions 302 and the light sources 301 on the non-horizontal portions 302 adjacent to both sides thereof form crossed light, as shown by arrows in the figure, to form a light crossing region 50 covering the liquid crystal display panel 10. Referring to fig. 6, the first irradiation region 401 and the second irradiation region 402 formed by the light source 301 on one non-horizontal portion 302 are complementary to the first irradiation region 401 and the second irradiation region 402 formed by the light source 301 on the non-horizontal portion 302 adjacent to both sides, that is, the region with lower irradiation intensity formed by the light source 301 on one non-horizontal portion 302 on the surface of the liquid crystal display panel 10 can be supplemented by the region with higher irradiation intensity formed by the light source 301 on the adjacent non-horizontal portion 302, so that the overall irradiation intensity of the surface of the liquid crystal display panel 10 is kept uniform, and the panel production quality is improved.
In the first and second embodiments, the non-horizontal portions (302 and 302 ') of the illumination assembly 30 may be disposed in a multi-step inclined plane, that is, one non-horizontal portion (302/302') is composed of a plurality of inclined planes disposed at different inclined angles, for example, the inclined angle between the non-horizontal portion and the liquid crystal display panel 10 is larger the closer to the inclined plane of the liquid crystal display panel 10.
In addition, the ultraviolet irradiation machine further comprises an adjusting mechanism (not shown), two adjacent non-horizontal portions/horizontal portions and non-horizontal portions are movably connected, and according to the actual manufacturing process and the size of the liquid crystal display panel, the adjusting mechanism can adjust the angles between two adjacent non-horizontal portions/horizontal portions and non-horizontal portions, so as to better regulate and control the uniformity of the illumination intensity irradiated to the liquid crystal display panel.
In the above three embodiments, the light sources on two adjacent non-horizontal portions are symmetrically or asymmetrically arranged, and this is not limited herein.
The cross-sectional shape of the illumination assembly described in this application includes, but is not limited to, one or more combinations of V-shape, trapezoid, and arc.
To sum up, the ultraviolet irradiation machine that this application provided changes the horizontal plane configuration of illumination subassembly (lighting fixture) in the ultraviolet irradiation machine to the current liquid crystal orientation into the non-horizontal plane configuration that the mirror image set up for the LED light source that sets up on the illumination subassembly forms the light of penetrating directly and oblique incidence, and the place that right LED light source illuminance is weaker is compensated by the place that left side LED light source illuminance is stronger, and the light that the LED light source on two adjacent non-horizontal parts sent complements each other promptly, finally makes the ultraviolet intensity homogeneous that whole liquid crystal display panel received, thereby promotes panel production quality.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. An ultraviolet irradiation machine for aligning liquid crystal on a liquid crystal display panel, comprising:
the bearing platform is used for bearing the liquid crystal display panel to be aligned;
the illumination assembly is arranged above the liquid crystal display panel corresponding to the bearing platform and comprises light sources which face one side of the liquid crystal display panel and are distributed in an array mode, and the light sources are used for forming a first illumination area and a second illumination area surrounding the first illumination area on the liquid crystal display panel;
the illumination assembly further comprises non-horizontal parts, two adjacent non-horizontal parts are arranged in a mirror image mode, and the extending direction of the non-horizontal parts is not parallel to the plane direction of the liquid crystal display panel;
the first irradiation region and the second irradiation region formed on the liquid crystal display panel by the light sources on two adjacent non-horizontal portions are complementary.
2. The UV irradiator according to claim 1, wherein the irradiation ranges of the light sources on the two non-horizontal portions are overlapped with each other at least partially to form a light crossing region, and the second irradiation region formed by the light source on one of the non-horizontal portions corresponds to the first irradiation region formed by the light source on the other non-horizontal portion.
3. The UV irradiator according to claim 2, wherein the LCD panel corresponds to at least one of the light-crossing regions, and the intensity of light in the light-crossing region is uniform.
4. The UV irradiator according to claim 2, wherein the irradiation unit further comprises a horizontal portion disposed between two adjacent non-horizontal portions, the horizontal portion being disposed in parallel with the liquid crystal display panel, wherein the light ray crossing region further comprises a light ray region formed corresponding to the light source on the horizontal portion.
5. The ultraviolet irradiation machine according to claim 4, wherein the second irradiation region formed by the light source on the horizontal portion corresponds to the first irradiation region formed by the light source on the non-horizontal portion.
6. The UV irradiator according to claim 1 or 4, wherein the illumination module further comprises a reflective plate disposed corresponding to the non-horizontal portion and the horizontal portion, and the light source is disposed on the reflective plate.
7. The UV irradiation machine according to claim 1 or 4, further comprising an adjustment mechanism for adjusting an angle between two adjacent non-horizontal portions/the horizontal portion and the non-horizontal portion, wherein the two adjacent non-horizontal portions/the horizontal portion and the non-horizontal portion are movably connected.
8. The ultraviolet irradiation machine according to claim 1, wherein said light sources on two adjacent non-horizontal portions are disposed symmetrically or asymmetrically.
9. The ultraviolet irradiation apparatus as set forth in claim 1, wherein the non-horizontal portion is formed in a multi-step inclined surface.
10. The ultraviolet irradiation machine according to claim 1, wherein the cross-sectional shape of the illumination assembly is one or more of V-shaped, trapezoid, arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910405720.9A CN110196517B (en) | 2019-05-16 | 2019-05-16 | Ultraviolet irradiation machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910405720.9A CN110196517B (en) | 2019-05-16 | 2019-05-16 | Ultraviolet irradiation machine |
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| CN110196517A CN110196517A (en) | 2019-09-03 |
| CN110196517B true CN110196517B (en) | 2021-09-03 |
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| CN110441935B (en) * | 2019-08-01 | 2021-07-06 | Tcl华星光电技术有限公司 | A irradiator for ultraviolet is joined in marriage |
| CN110888267B (en) * | 2019-11-26 | 2020-12-08 | Tcl华星光电技术有限公司 | Liquid crystal alignment device and operation method thereof |
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| CN110196517A (en) | 2019-09-03 |
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