CN110133889B - Display panel and preparation method thereof - Google Patents
Display panel and preparation method thereof Download PDFInfo
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- CN110133889B CN110133889B CN201910414168.XA CN201910414168A CN110133889B CN 110133889 B CN110133889 B CN 110133889B CN 201910414168 A CN201910414168 A CN 201910414168A CN 110133889 B CN110133889 B CN 110133889B
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- liquid crystal
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- crystal panel
- display area
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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
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
-
- 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
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/13332—Front frames
Abstract
The invention provides a display panel and a preparation method thereof, wherein the display panel comprises a liquid crystal panel, a cover plate, a frame glue layer and a supporting layer; the display panel preparation method comprises a liquid crystal panel providing step, a frame glue layer preparation step, a supporting layer preparation step, a cover plate attaching step and a vacuumizing step, wherein the supporting layer is arranged on the inner side of the frame glue layer, so that the cover plate can be completely attached to the liquid crystal panel, the thickness of the liquid crystal layer at each position in the liquid crystal panel is the same, the light penetration rate is uniform, and the quality of the display panel is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a preparation method thereof.
Background
In actual production, in order to keep the gap between the cover plate and the panel to be a constant value. In general, the air pressure of the gap layer is smaller than the external atmospheric pressure in design, and the gap is constant by the pressure caused by the air pressure difference. However, since the liquid crystal is filled at a low pressure when the liquid crystal panel is formed into a cell, the liquid crystal thickness is made uniform by using atmospheric pressure.
As shown in fig. 1, the display panel includes a liquid crystal panel 1, a cover plate 2, a sealant layer 3, and a gap 100. The liquid crystal panel 1 and the cover plate 2 are arranged oppositely and are attached to each other through the frame glue layer 3. The frame glue film 3 is arranged at the edge of the liquid crystal panel 1 and the edge of the cover plate 2 and forms a rectangular annular structure, and a gap 00 is formed in the middle of the annular structure. Under normal pressure, because the atmospheric pressure exists between the cover plate and the liquid crystal panel, the liquid crystal in the liquid crystal panel is subjected to uniform atmospheric pressure, and the thickness of the liquid crystal cannot be changed.
In order to make the cover plate and the liquid crystal panel closely adhere to each other, it is necessary to perform vacuum processing on the gap in a vacuum or low-pressure state.
As shown in fig. 2, in a vacuum or low pressure state, the cover plate 2 and the liquid crystal panel 1 are affected by atmospheric pressure, and the middle portions are closely attached. Because there is frame gum layer 3 of certain thickness between the edge of apron 2 and the edge of liquid crystal display panel 1, apron 2 can't laminate completely with liquid crystal display panel 1, can take place the warpage of certain degree, and the pressfitting is handled the completion back, can have clearance 200 near the inboard edge of frame glue film 3. Because the liquid crystal panel 1 undergoes a certain degree of warping deformation, and the middle part of the liquid crystal panel is under a larger pressure, the thickness of the liquid crystal layer at the edge of the liquid crystal panel is larger than that of the liquid crystal layer at the center of the liquid crystal panel, so that the liquid crystal in the liquid crystal panel is unevenly distributed.
The transmittance of the liquid crystal display panel is determined by the thickness of the liquid crystal layer. Therefore, when the thickness of the liquid crystal layer at the edge of the liquid crystal panel is larger than the thickness of the liquid crystal layer at the center of the liquid crystal panel, the light transmittance at the edge of the liquid crystal panel is larger than the light transmittance at the center of the liquid crystal panel, so that the light transmittance of the whole liquid crystal panel is different, and the phenomenon that the bright edge or the display of the display panel is uneven is caused.
Disclosure of Invention
The invention aims to provide a display panel and a preparation method thereof, and aims to solve the technical problems of uneven liquid crystal distribution, uneven liquid crystal layer thickness and uneven light transmittance in the liquid crystal panel and uneven display of the display panel in the prior art.
In order to achieve the above object, the present invention provides a display panel, which includes a liquid crystal panel, a cover plate, a sealant layer, and a supporting layer; the cover plate is attached to the surface of one side of the liquid crystal panel; the frame glue layer is annularly arranged between the edge of the liquid crystal panel and the edge of the cover plate; the liquid crystal panel, the cover plate and the frame glue layer enclose at least one gap; the supporting layer fills the gap.
Furthermore, the supporting layer is made of colloid.
Further, the cover plate has the same shape as the liquid crystal panel; the size of the cover plate is the same as that of the liquid crystal panel.
In order to achieve the above object, the present invention further provides a method for manufacturing a display panel, comprising the steps of providing a liquid crystal panel; a frame glue layer preparation step, wherein an annular frame glue layer is prepared at the edge of the upper surface of the liquid crystal panel; a support layer preparation step, namely preparing an annular support layer on the upper surface of the liquid crystal panel and locating the annular support layer at the inner side of the frame adhesive layer; a cover plate attaching step of attaching a cover plate to the upper surface of the liquid crystal panel; and a vacuumizing step, wherein the space surrounded by the annular frame adhesive layer and the supporting layer is vacuumized, so that the cover plate is attached to the liquid crystal panel.
Further, in the step of preparing the support layer, the bottom surface of the support layer is tangent to the upper surface of the liquid crystal panel, and the side surface of the support layer is tangent to the inner side surface of the sealant layer.
Further, in the step of preparing the support layer, the support layer includes an inclined plane extending from the top of the sealant layer to the upper surface of the liquid crystal panel; the slope of the inclined plane is the ratio of the height of the supporting layer to the width of the bottom surface of the supporting layer.
Further, in the step of preparing the support layer, the height of the support layer is consistent with the height of the sealant layer.
Further, in the step of attaching the cover plate, a CCD (charge coupled device) alignment mode or a jig auxiliary positioning mode is adopted, so that the cover plate is attached to the upper surface of the liquid crystal panel.
Further, in the step of vacuumizing, a vacuumizing device is used for vacuumizing a space surrounded by the annular frame adhesive layer and the supporting layer, so that the cover plate is attached to the liquid crystal panel.
The technical effect of the invention is that the display panel and the preparation method thereof are provided, the support layer is arranged on the inner side of the frame glue layer, so that the cover plate can be completely attached to the liquid crystal panel, the liquid crystal layers at all positions in the liquid crystal panel have the same thickness, the light penetration rate is uniform, and the quality of the display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art display panel under normal pressure;
FIG. 2 is a schematic structural diagram of a display panel after vacuuming in the prior art;
FIG. 3 is a schematic structural diagram of a display panel after vacuuming according to the present invention;
FIG. 4 is a flow chart of a method for fabricating a display panel according to the present invention;
FIG. 5 is a cross-sectional view of a display panel according to the present invention.
Some of the symbols in the drawings are as follows:
1 a liquid crystal panel; 2, covering a plate;
3, framing a glue layer; 4 a support layer;
10 a display area; 20 a non-display area;
100 gaps; 200 gaps.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings for illustrating the invention and enabling those skilled in the art to fully describe the technical contents of the present invention so that the technical contents of the present invention can be more clearly and easily understood. The present invention may, however, be embodied in many different forms of embodiments and the scope of the present invention should not be construed as limited to the embodiments set forth herein.
As shown in fig. 3, the present invention provides a display panel, which includes a liquid crystal panel 1, a cover plate 2, a frame glue layer 3 and a support layer 4.
The liquid crystal panel 1 is filled with liquid crystal, and the arrangement of the liquid crystal is arranged to achieve the purposes of shading and transmitting light, so that the display panel can display images.
The cover plate 2 is disposed opposite to the liquid crystal panel 1 and attached to the upper surface of the liquid crystal panel 1. The shape of the cover plate 2 is the same as that of the liquid crystal panel 1; the cover 2 has the same size as the liquid crystal panel 1.
The frame glue layer 3 is annular and is arranged between the edge of the liquid crystal panel 1 and the edge of the cover plate 2, namely, the frame glue layer is positioned in a non-display area of the display panel. The liquid crystal panel 1, the cover plate 2 and the frame glue layer 3 enclose at least one gap.
The supporting layer 4 is made of colloid, so that the cover plate 2 and the liquid crystal panel 1 are tightly attached together under the action of atmospheric pressure, the technical problems of uneven thickness and inconsistent light penetration rate of a liquid crystal layer in the liquid crystal panel 1 due to the thickness of the frame glue layer 2 are solved, and the phenomenon of bright edges of the display panel is avoided. The material of the support layer 4 may be a colloid such as OCA optical adhesive, double-sided adhesive, or the like, as long as it has good adhesiveness.
According to the display panel provided by the embodiment, the supporting layer is arranged on the inner side of the frame adhesive layer, so that the cover plate can be completely attached to the liquid crystal panel, the liquid crystal thickness of each position in the liquid crystal panel is the same, the penetration rate is uniform, and the quality of the display panel is improved. In addition, when the display panel has a touch function, the supporting layer with a certain slope is arranged on the inner side of the frame adhesive layer, so that the problem that the display panel generates optical interference (water ripples or Newton rings) during touch can be solved, the display effect is obviously provided, the operation of a user on the cover plate has good sensitivity, and the user experience is improved.
As shown in fig. 4, the present embodiment further provides a method for manufacturing a display panel, including the following steps S1 to S5.
S1 liquid crystal panel providing step, providing a liquid crystal panel.
S2 frame glue layer preparation, preparing a ring-shaped frame glue layer at the edge of the upper surface of the liquid crystal panel.
The frame glue film is connected end to end by the optical adhesive tape to form a ring. Optical cement (Solid optical Clear Adhesive) is a UV, moisture dual-curing optical cement which can be cured under UV light. In this embodiment, the width of the frame glue layer is narrower, which is beneficial to realizing a narrow frame of the display panel, and a large amount of optical adhesive materials can be saved, thereby reducing the production cost.
S3 step of preparing a supporting layer, namely preparing a ring-shaped supporting layer on the upper surface of the liquid crystal panel and locating at the inner side of the frame glue layer.
As shown in fig. 5, in the process of preparing the support layer 4 on the upper surface of the liquid crystal panel 1, the height of the support layer 4 is consistent with the height of the sealant layer 3, the bottom surface of the support layer 4 is tangent to the upper surface of the liquid crystal panel 1, and the side surface of the support layer 4 is tangent to the inner side surface of the sealant layer 3, so as to avoid the phenomenon that the heights of the support layer 4 and the sealant layer 3 are different.
The support layer 4 comprises an inclined plane which extends from the top of the frame adhesive layer 4 to the upper surface of the liquid crystal panel 1; the slope of the slope is the ratio of the height of the support layer 4 to the width of its bottom surface.
In this embodiment, the display panel includes a display area 10 and a non-display area 20, and the frame glue layer 3 and the support layer 4 are located in the non-display area. The width of the support layer 4 is the distance from the inner side of the frame adhesive layer 3 to the outer side of the display area 10, the height of the support layer 4 is the height of the frame adhesive layer 3, and the slope of the support layer 4 is the ratio of the height of the frame adhesive layer 3 to the distance from the inner side of the frame adhesive layer 3 to the outer side of the display area 10. Therefore, before the support layer is arranged, a person skilled in the art can obtain the slope of the support layer by measuring the distance from the inner side of the frame adhesive layer to the outer side of the display area and the height of the frame adhesive layer, and arrange the support layer according to the slope.
In this embodiment, the transparent material of the supporting layer is colloid, and has no influence on the appearance of the product. The structure of the supporting layer is similar to a right triangle.
S4 attaching a cover plate to the upper surface of the liquid crystal panel.
Adopt CCD counterpoint mode or smelting tool assistance-localization real-time mode, make the edge of apron attach in liquid crystal display panel's edge.
And S5, performing vacuum pumping treatment on the space surrounded by the annular frame adhesive layer and the supporting layer, so that the cover plate is attached to the liquid crystal panel.
And conveying the cover plate and the liquid crystal panel into a sealed cavity, vacuumizing a space surrounded by the annular frame glue layer and the supporting layer by using a vacuum pump, and heating the cover plate and the liquid crystal panel by using a heating device to ensure that the cover plate is attached to the liquid crystal panel.
In the heating and pressurizing process, the frame glue layer and the support layer are heated and cured, so that the edge of the cover plate is positioned at the edge of the liquid crystal panel and tightly attached. After the frame adhesive layer and the supporting layer are cured, an annular structure, preferably a rectangular ring, is formed.
According to the display panel manufacturing method provided by the embodiment, the supporting layer is arranged on the inner side of the frame adhesive layer, so that the cover plate can be completely attached to the liquid crystal panel under the action of atmospheric pressure, the liquid crystal layers at all positions in the liquid crystal panel are the same in thickness, the light penetration rate is uniform, and the quality of the display panel is improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. The display panel is characterized by comprising a display area, a non-display area and a display panel
A liquid crystal panel extending from the display region to the non-display region;
the cover plate is attached to the surface of one side of the liquid crystal panel and extends from the display area to the non-display area;
the frame glue layer is annularly arranged between the edge of the liquid crystal panel and the edge of the cover plate and is arranged in the non-display area; the liquid crystal panel, the cover plate and the frame glue layer enclose at least one gap; and
the supporting layer is filled in the gap and is arranged in the non-display area;
the width of the supporting layer is the distance from the inner side of the frame glue layer to the outer side of the display area, the height of the supporting layer is the same as the height of the frame glue layer, and the slope of the supporting layer is the ratio of the height of the frame glue layer to the distance from the inner side of the frame glue layer to the outer side of the display area.
2. The display panel of claim 1,
the supporting layer is made of colloid.
3. The display panel of claim 1,
the cover plate is the same as the liquid crystal panel in shape;
the size of the cover plate is the same as that of the liquid crystal panel.
4. A preparation method of a display panel is characterized in that the display panel comprises a display area and a non-display area, and the preparation method comprises the following steps:
providing a liquid crystal panel, wherein the liquid crystal panel extends from the display area to the non-display area;
a frame glue layer preparation step, wherein an annular frame glue layer is prepared at the edge of the upper surface of the liquid crystal panel and extends from the display area to the non-display area;
a support layer preparation step, namely preparing an annular support layer on the upper surface of the liquid crystal panel, wherein the annular support layer is positioned on the inner side of the frame adhesive layer and is arranged in the non-display area;
a cover plate attaching step of attaching a cover plate to the upper surface of the liquid crystal panel and extending from the display area to the non-display area; and
a vacuumizing step, wherein a space surrounded by the annular frame adhesive layer and the supporting layer is vacuumized, so that the cover plate is attached to the liquid crystal panel;
the width of the supporting layer is the distance from the inner side of the frame glue layer to the outer side of the display area, the height of the supporting layer is the same as the height of the frame glue layer, and the slope of the supporting layer is the ratio of the height of the frame glue layer to the distance from the inner side of the frame glue layer to the outer side of the display area.
5. The method for manufacturing a display panel according to claim 4,
in the step of preparing the support layer, the support layer is,
the bottom surface of the supporting layer is tangent to the upper surface of the liquid crystal panel,
the side surface of the supporting layer is tangent to the inner side surface of the frame rubber layer.
6. The method for manufacturing a display panel according to claim 4,
in the step of preparing the support layer, the support layer is,
the supporting layer comprises an inclined plane which extends from the top of the frame glue layer to the upper surface of the liquid crystal panel;
the slope of the inclined plane is the ratio of the height of the supporting layer to the width of the bottom surface of the supporting layer.
7. The method for manufacturing a display panel according to claim 4,
in the step of preparing the support layer, the support layer is,
the height of the supporting layer is consistent with that of the frame glue layer.
8. The method for manufacturing a display panel according to claim 5,
in the step of attaching the cover plate, a CCD (charge coupled device) alignment mode or a jig auxiliary positioning mode is adopted, so that the cover plate is attached to the upper surface of the liquid crystal panel.
9. The method for manufacturing a display panel according to claim 5,
in the vacuumizing step, a vacuumizing device is used for vacuumizing a space surrounded by the annular frame adhesive layer and the supporting layer, so that the cover plate is attached to the liquid crystal panel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414168.XA CN110133889B (en) | 2019-05-17 | 2019-05-17 | Display panel and preparation method thereof |
| PCT/CN2019/128799 WO2020233121A1 (en) | 2019-05-17 | 2019-12-26 | Display panel and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414168.XA CN110133889B (en) | 2019-05-17 | 2019-05-17 | Display panel and preparation method thereof |
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| Publication Number | Publication Date |
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| CN110133889A CN110133889A (en) | 2019-08-16 |
| CN110133889B true CN110133889B (en) | 2021-03-16 |
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| CN201910414168.XA Active CN110133889B (en) | 2019-05-17 | 2019-05-17 | Display panel and preparation method thereof |
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| CN (1) | CN110133889B (en) |
| WO (1) | WO2020233121A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110133889B (en) * | 2019-05-17 | 2021-03-16 | 惠州市华星光电技术有限公司 | Display panel and preparation method thereof |
| CN111708211A (en) * | 2020-06-12 | 2020-09-25 | 惠州市华星光电技术有限公司 | Display panel and display device |
| CN112505954B (en) * | 2020-12-09 | 2023-07-18 | 业成科技（成都）有限公司 | Production method, vacuumizing device and production equipment of liquid crystal display module |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI416199B (en) * | 2010-03-25 | 2013-11-21 | Winsky Technology Ltd | Touch panel |
| CN103488324A (en) * | 2012-06-14 | 2014-01-01 | 瀚宇彩晶股份有限公司 | Touch display device, protective cover thereof and lamination device |
| TWI505009B (en) * | 2013-09-16 | 2015-10-21 | E Ink Holdings Inc | Manufacturing method for display module |
| CN103472967A (en) * | 2013-09-26 | 2013-12-25 | 无锡宇宁光电科技有限公司 | Capacitive screen glued by using opening glue and manufacturing process thereof |
| CN204480199U (en) * | 2014-09-11 | 2015-07-15 | 宸鸿科技(厦门)有限公司 | Contactor control device |
| CN105138191B (en) * | 2015-10-15 | 2019-02-26 | 京东方科技集团股份有限公司 | A kind of touch control display apparatus and preparation method thereof |
| CN108190832B (en) * | 2017-12-29 | 2020-09-18 | 深圳市华星光电半导体显示技术有限公司 | OLED panel and manufacturing method thereof |
| CN208141085U (en) * | 2018-04-19 | 2018-11-23 | 昆山龙腾光电有限公司 | A kind of display module and display device |
| CN109656404A (en) * | 2018-10-29 | 2019-04-19 | 惠州市华星光电技术有限公司 | A kind of applying method and display module of display module |
| CN109739380A (en) * | 2018-12-28 | 2019-05-10 | 惠州市华星光电技术有限公司 | A kind of touch control display apparatus and preparation method thereof |
| CN109613732B (en) * | 2019-01-18 | 2021-07-06 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display screen and manufacturing method thereof |
| CN110133889B (en) * | 2019-05-17 | 2021-03-16 | 惠州市华星光电技术有限公司 | Display panel and preparation method thereof |
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- 2019-12-26 WO PCT/CN2019/128799 patent/WO2020233121A1/en active Application Filing
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| WO2020233121A1 (en) | 2020-11-26 |
| CN110133889A (en) | 2019-08-16 |
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