CN110007527B - Frame sealing glue, display panel, manufacturing method of display panel and display device - Google Patents
Frame sealing glue, display panel, manufacturing method of display panel and display device Download PDFInfo
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- CN110007527B CN110007527B CN201910322393.0A CN201910322393A CN110007527B CN 110007527 B CN110007527 B CN 110007527B CN 201910322393 A CN201910322393 A CN 201910322393A CN 110007527 B CN110007527 B CN 110007527B
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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
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
Frame sealing glue, a display panel, a manufacturing method of the display panel and display equipment. The frame sealing glue comprises: a light-transmitting matrix glue material; and a light-transmitting solute for transforming into a light-shielding solute under a first set condition; and the capsule coat is mixed in the matrix glue material, the light-transmitting solute is coated in the capsule coat, and the capsule coat is degraded under a second set condition to release the light-transmitting solute in the matrix glue material. The frame sealing glue is characterized in that a capsule coat is mixed in a light-transmitting base glue material, a light-transmitting solute is coated in the capsule coat, when the frame sealing glue is applied to a display panel, after an array substrate and a color film substrate are paired, the capsule coat is degraded under a second set condition to release the light-transmitting solute, so that the light-transmitting solute is mixed in the base glue material, the light-transmitting solute is converted into a light-shielding solute under the first set condition, the light-shielding solute presents light shielding color, and the color of the frame sealing glue is changed from the light-transmitting color to the light shielding color due to the fact that the light-shielding solute is mixed in the base glue material, so that the cured frame sealing glue can shield light.
Description
Technical Field
The present disclosure relates to liquid crystal display devices, and particularly to a frame sealing adhesive, a display panel, a method for manufacturing a display panel, and a display device.
Background
In the field of liquid crystal display devices, the frame sealing adhesive has the function of sealing an array substrate and a color film substrate, preventing liquid crystal from overflowing and simultaneously preventing water vapor and oxygen in air from entering the frame sealing adhesive. The curing method includes a thermal curing method, a photo-thermal curing method and a photo-curing method. Photo-thermal curing and adhesive (photo-thermal curing and frame sealing adhesive) is almost adopted in the industry at present. The existing photo-thermal curing and using type frame sealing glue is mostly milky white, and is white and semitransparent after being cured, so that the frame sealing glue has certain light transmission capacity. In order to prevent light leakage of backlight light through the frame sealing adhesive after the pair of boxes is formed, BM (Black Matrix) patterns with a width larger than that of the frame sealing adhesive are usually required to be arranged at corresponding positions of the color film substrate for shading, but a small amount of light is still refracted and reflected into the boxes through the frame sealing adhesive. Therefore, when the sealant is cured by UV irradiation, the UV irradiation can be performed only on the side of the array substrate through the gaps of the peripheral traces in the corresponding region of the array substrate, but not from the side of the color film. In actual production, the cumulative exposure amount Fan Xuyao for UV irradiation curing is limited to a certain range in order to match the line body productivity. In order to ensure that the frame sealing glue can be fully photocured and prevent poor sealing performance in a high-temperature high-humidity high-pressure test and a peeling test during later-stage reliability evaluation of a product, the width and the opening ratio of metal wiring in a gluing area need to be ensured during design of an array substrate. Therefore, the peripheral routing can not be densely wired, which is not favorable for the development of narrow frame technology.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a frame sealing adhesive, which can improve the peripheral light leakage problem caused by poor effect of blocking the disordered light of the non-effective display area inside the box by the frame sealing adhesive when applied to the display panel.
A display panel, a display device and a manufacturing method of the display panel are also provided.
The frame sealing glue provided by the embodiment of the invention comprises: a light-transmitting matrix glue material; and a light-transmitting solute for transforming into a light-shielding solute under a first set condition; and the capsule coat is mixed in the matrix glue material, the light-transmitting solute is coated in the capsule coat, and the capsule coat is degraded under a second set condition to release the light-transmitting solute in the matrix glue material.
Optionally, the material of the capsule includes a photo-thermal degradation material, and the second setting condition is ultraviolet light irradiation.
Optionally, the capsule coat further comprises a shading dye, and the shading dye is mixed with the photo-thermal degradation material.
Optionally, in the frame sealing glue, the sum of the mass percentages of the capsule coat and the light-transmitting solute is 1-10%.
Optionally, the light-transmissive solute is a photosensitive material, and the first setting condition is a setting light irradiation.
Optionally, the photosensitive material is silver halide, the setting light is ultraviolet light, and the light-shielding solute is black.
The display panel provided by the embodiment of the invention comprises: the display panel comprises an array substrate, a color film substrate and a frame sealing adhesive, wherein the array substrate and the color film substrate are oppositely arranged, and the frame sealing adhesive is arranged between the array substrate and the color film substrate; the color film substrate comprises a light shielding layer, and a hollow-out area is arranged on the light shielding layer; the frame sealing glue is used for connecting the array substrate and the color film substrate, orthographic projections of the frame sealing glue, the hollow area and the peripheral wiring area on the array substrate are at least partially overlapped, and the frame sealing glue comprises a base body glue material and a shading solute.
Optionally, the projection of the frame sealing glue on the color film substrate is distributed over the hollow area.
The display device provided by the embodiment of the invention comprises the display panel in any one of the embodiments.
The manufacturing method of the display panel provided by the embodiment of the invention comprises the following steps:
providing an array substrate and a color film substrate, wherein the color film substrate comprises a light shielding layer, a hollow area is arranged on the light shielding layer, and the array substrate is provided with a peripheral wiring area;
the array substrate and the color film substrate are installed in a box-to-box mode, a frame sealing adhesive formed in the box-to-box mode is connected with the array substrate and the color film substrate, the frame sealing adhesive is the frame sealing adhesive in any one of the embodiments, and orthographic projections of the frame sealing adhesive, the hollow area and the peripheral wiring area on the array substrate are at least partially overlapped;
and curing the frame sealing glue through the hollow area on the side of the color film substrate by ultraviolet rays, wherein the photosensitive material in the frame sealing glue is converted into a shading solute during curing, so that the cured frame sealing glue is shaded.
Optionally, before the step of providing the array substrate and the color filter substrate, the method further includes: and forming a light shielding layer with a hollow area at the periphery on the substrate through a one-time composition process to manufacture the color film substrate.
Optionally, the step of curing the frame sealing adhesive through the hollow area on the color film substrate side by the ultraviolet light includes: and irradiating ultraviolet light on the side of the color film substrate on the hollow area through a mask plate to solidify the frame sealing glue.
Compared with the prior art, the frame sealing glue provided by the embodiment of the invention has the advantages that the capsule coat is mixed in the transparent matrix glue material, the transparent solute is coated in the capsule coat, when the frame sealing glue is applied to the display panel, after the array substrate and the color film substrate are paired, the capsule coat is degraded under the second set condition to release the transparent solute, so that the transparent solute is mixed in the matrix glue material, the transparent solute is converted into the shading solute under the first set condition, the shading solute presents shading color, and the color of the frame sealing glue is changed from the transparent color to the shading color due to the fact that the shading solute is mixed in the matrix glue material, so that the cured frame sealing glue can shade light, and the problem that the disordered light blocking effect of the frame sealing glue on an ineffective display area in the box is poor and peripheral light leakage is caused can be solved.
Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments herein and are incorporated in and constitute a part of this specification, illustrate embodiments herein and are not to be construed as limiting the embodiments herein.
FIG. 1 is a schematic diagram illustrating a manufacturing process of a display panel according to the related art;
fig. 2 is a schematic structural diagram of a manufacturing process of a display panel according to a second embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure view of the photosensitive capsule in the frame sealing adhesive according to the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 2 and 3 is:
the light-transmitting film comprises an array substrate 10, an internal wiring 11, a peripheral wiring 12, a color film substrate 20, a light-shielding layer 21, a hollow-out region 22, frame sealing glue 30, a light-transmitting solute 31, a capsule coat 32, a photosensitive capsule 33, a mask 40, a support pattern layer 51, a color resistance pattern layer 52, a flat layer 53 and ultraviolet rays 6.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, however, the present disclosure may be practiced otherwise than as specifically described herein, and thus the scope of the present disclosure is not limited by the specific embodiments disclosed below.
Fig. 1 illustrates a method for manufacturing a liquid crystal display panel in the related art:
preparing an array substrate: the display device includes an array substrate 101, internal traces 102 in an active display area A1, and peripheral traces 103 in a non-active display area A2 (for the convenience of visual reflection on the effects of glue spreading and curing, other film layers are not described herein).
Preparing a color film substrate: the color film substrate glass comprises a color film substrate glass 201, a BM pattern layer 202, a color resistance pattern layer 203, a flat layer 204 and a support pattern layer 205. The BM pattern layer 202 is a light-shielding layer or a black matrix, the color-resist pattern layer 203 is a color film layer, and the support pattern layer 205 is a spacer or a support.
After the array substrate and the color film substrate are packed, the array substrate and the color film substrate are bonded through the frame sealing glue 3, and the frame sealing glue is photocured through the ultraviolet light 4 under the action of the metal mask 5. Because the frame sealing glue has light transmittance, the color film substrate at the corresponding position needs to be shielded by the BM pattern layer 202, so that the light curing can be performed only from the array substrate side, strict requirements are imposed on the aperture opening ratio of the peripheral wires 103, the dense arrangement of the peripheral wires 103 is limited, and the realization of a narrow frame is not facilitated.
The problem of peripheral light leakage can be solved well by adopting black frame sealing glue, but the black frame sealing glue has too low light transmittance, slow ultraviolet light curing and poor effect.
The problems of the related art are as follows:
1. the frame sealing glue needs to be irradiated and cured by ultraviolet rays from the side of the array substrate, so that the opening rate of peripheral wiring at the corresponding position is limited, and the narrow frame is not facilitated to realize; and the frame sealing glue is white and semitransparent after being cured, so that the effect of blocking disordered light of a non-effective display area in the box is poor, and peripheral light leakage and the like are poor.
2. The black frame sealing glue is used, and the ultraviolet light transmittance is too low, so that the ultraviolet light curing problem cannot be solved.
Example one
The frame sealing adhesive 30 provided by the embodiment of the present invention includes: a light-transmitting matrix glue material; and a light-transmitting solute 31 mixed in the matrix glue material, and the light-transmitting solute 31 is used for being changed into a light-shielding solute under a first set condition.
In the frame sealing glue 30, a light-transmitting solute 31 is mixed in a light-transmitting base glue material, the light-transmitting solute 31 is converted into a light-shielding solute under a first set condition, when the frame sealing glue 30 is applied to a display panel, after the array substrate 10 and the color film substrate 20 are paired, the light-transmitting solute 31 is converted into the light-shielding solute under the first set condition, and the light-shielding solute presents a light-shielding color.
As shown in fig. 3, the frame sealing adhesive 30 further includes: and the capsule coat 32 is mixed in the matrix glue material, the light-transmitting solute 31 is coated in the capsule coat 32, and the capsule coat 32 is used for degrading under a second set condition to release the light-transmitting solute 31 in the matrix glue material.
When the frame sealing adhesive 30 is applied to a display panel, after the array substrate 10 and the color film substrate 20 are mounted, the capsule coat 32 is degraded under a second set condition, the degraded capsule coat 32 is broken to release the light-transmitting solute 31 into the matrix adhesive material, and the matrix adhesive material is mixed with the light-transmitting solute 31; and then the light-transmitting solute 31 is converted into a light-shielding solute under the first set condition, the light-shielding solute presents light-shielding color, and the color of the frame sealing glue 30 is changed from light-transmitting color to light-shielding color due to the fact that the light-shielding solute is mixed in the matrix glue material, so that the cured frame sealing glue 30 can shield light, the effect of blocking the disordered light of the non-effective display area in the box by the frame sealing glue 30 is improved, the peripheral light leakage problem is prevented, and the purposes of improving the edge contrast and displaying the image quality are achieved. The light-shielding color may be black.
Preferably, the light-transmissive solute 31 is a photosensitive material, and the first setting condition is set to set the light irradiation. The photosensitive material is silver halide, the light is set to be ultraviolet light, and the shading solute is black. The silver halide may be silver iodide, silver bromide, silver chloride, etc. The material of the capsule 32 includes a photo-thermal degradable material, and the second set condition is set to ultraviolet light irradiation. Furthermore, the material of the capsule 32 also includes a light-shielding dye, and the light-shielding dye is mixed with the photo-thermal degradation material to form the light-shielding capsule 32, and the light-shielding capsule can be also called as a non-light-transmitting capsule 32. The ultraviolet light irradiation also generates high heat, the frame sealing glue 30 is cured by the ultraviolet light, the capsule coat 32 in the frame sealing glue 30 is broken and degraded, and the photosensitive material wrapped by the capsule coat is uniformly dispersed in the matrix glue material. By irradiating the frame sealing adhesive 30 with ultraviolet light, the exposed silver halide gradually forms silver ions, and the silver ions are aggregated to generate silver particles, thereby finally forming the frame sealing adhesive 30 with the light-shielding effect. The light-shielding property of the cured frame sealing adhesive 30 can better shield the disordered light refracted from the frame sealing adhesive 30 to the effective display area, improve the peripheral light leakage problem of the display panel, and improve the peripheral contrast. The shading dye may be a black dye.
The capsule coat 32 is prepared by mixing a black dye and a photo-thermal degradable material (refer to a black degradable plastic preparation method). The capsule coat 32 is used for preventing the photosensitive material in the frame sealing glue 30 from being denatured due to reaction in advance, and is convenient for storage, transportation and production of the frame sealing glue 30. The photothermal degradation material comprises a photodegradation material and a thermal degradation material.
The light degradation material absorbs ultraviolet radiation and then generates light initiation effect, under the light initiation effect, molecular long bonds in the light degradation material are split, the light degradation material is preliminarily degraded into fragments with lower molecular weight, the integrity of the polymer is destroyed, and therefore the physical performance of the light degradation material is reduced. These fragments can continue to oxidize in nature, undergo radical scission reactions, and further degrade into low molecular weight compounds, including copolymers of polyethylene and carbon monoxide, or copolymers of polyethylene and vinyl copper, etc.
The thermal degradation material can be degraded under heating conditions, and the thermal degradation reaction can include molecular chain depolymerization, molecular chain random breakage, substituent removal and the like, which are not described in detail. Examples of thermally degradable materials include polyacrylates, branched polyethylenes, polyvinyl chlorides, and the like. The photothermal degradation materials are all mature technologies in the material industry at present, and are not described herein in detail.
After the capsule coat 32 is degraded, the decomposed colored dye is also mixed into the matrix glue material, and the content of the colored dye in the frame sealing glue 30 is less, but the shading effect of the cured frame sealing glue 30 can also be improved to a certain extent.
Under the premise of reasonable packaging, storage and production line usage of the frame sealing adhesive 30, considering that the time delay (shorter) from the frame sealing adhesive 30 coating to the photo-curing is provided, a light-transmitting capsule coat 32 (i.e., a photo-thermal degradation material that does not participate in the light-shielding dye) may be used or a photosensitive material may be directly dispersed in the frame sealing adhesive 30, which is not described herein again.
A capsule coat 32 and silver halide wrapped by the capsule coat form a photosensitive capsule 33 (as shown in fig. 3), and the photosensitive capsule 33 comprises a plurality of photosensitive capsules in the frame sealing glue. The photosensitive capsules 33 can be prepared by a surface polymerization coating method, a mechanical mixing method, a stepwise heterogeneous coacervation method, or the like. The mechanical mixing method mainly utilizes the impact force of high-speed airflow to complete the coating of particles. The stepwise heterogeneous coacervation method utilizes electrostatic attraction to adsorb small-particle-size cationic polymer particles to the surface of larger anionic polymer particles to form microsphere aggregates with rough outer surfaces, and then the microsphere aggregates are heated to a temperature above the glass transition temperature of the small-particle-size particles to be coagulated into continuous layers, and the surface of the whole microsphere system becomes smooth along with the prolonging of heating time, and the like.
Specifically, the photosensitive capsule 33 in the frame sealing glue 30 accounts for 1% to 10% by mass, and when the coating is a black coating, because the content of the photosensitive capsule is relatively small in the frame sealing glue, the ultraviolet ray shielding effect is small when the frame sealing glue is cured, and the smooth proceeding of the frame sealing glue curing process can be ensured. The matrix glue material comprises components such as a photoinitiator, an oligomer, an acrylic monomer, an epoxy resin compound, a thermal curing agent, a filler and the like. The filler may be an inorganic or inorganic filler.
Example two
As shown in fig. 2, the display panel provided in the embodiment of the present invention includes: the display panel comprises an array substrate 10, a color film substrate 20 and a frame sealing adhesive 30, wherein the array substrate 10 and the color film substrate 20 are arranged oppositely, the frame sealing adhesive 30 is arranged between the array substrate 10 and the color film substrate 20, the array substrate 10 is provided with a peripheral wiring area, and the peripheral wiring area is provided with a peripheral wiring 12; the color film substrate 20 comprises a shading layer 21, and a hollow-out area 22 is arranged on the shading layer 21; the frame sealing glue 30 is used for connecting the array substrate 10 and the color film substrate 20, orthographic projections of the frame sealing glue 30, the hollow area 22 and the peripheral wiring area on the array substrate 10 are at least partially overlapped, and the frame sealing glue 30 comprises a base body glue material and a shading solute.
In the display panel, the frame sealing glue 30 is in a shading color after being cured, so that the problem of light leakage at the edge of the display panel can be solved, and the edge contrast and the display image quality can be improved. The display panel is manufactured by the manufacturing method of the display panel, the setting mode of the peripheral wires 12 on the array substrate 10 cannot influence the curing process of the frame sealing glue 30, the problem of limitation of the opening rate of the peripheral wires 12 when the frame sealing glue 30 on the array substrate 10 is designed is solved, and the narrow frame design is favorably realized.
Specifically, the width of the frame sealing adhesive 30 is the same as the width of the hollow area 22, so that the projection of the frame sealing adhesive 30 on the color film substrate 20 is distributed over the hollow area 22, and light leakage in the hollow area 22 is prevented. Of course, the width of the frame sealing adhesive 30 may also be greater than the width of the hollow area 22, and the purpose of the present application can also be achieved, and the purpose of the present application does not depart from the design concept of the present invention, and therefore, the present application is not described herein again and should also fall within the protection scope of the present application.
Specifically, the peripheral trace 12 is located on the front surface of the array substrate 10, the light-shielding layer 21 is located on the back surface of the color filter substrate 20, the front surface of the array substrate 10 is opposite to the back surface of the color filter substrate 20, and the hollow area 22 is opposite to the peripheral trace 12.
In fig. 2, reference numeral 51 denotes a support pattern layer, reference numeral 52 denotes a color-resist pattern layer, reference numeral 53 denotes a flat layer, and reference numeral 6 denotes an ultraviolet ray.
The manufacturing method of the display panel (see fig. 2) includes:
providing an array substrate 10 and a color film substrate 20, wherein a light shielding layer 21 is arranged on the back surface of the color film substrate 20, a hollow area 22 is arranged on the light shielding layer 21, a peripheral wiring area is arranged on the front surface of the array substrate 10, and a peripheral wiring 12 is arranged in the peripheral wiring area;
a shading layer 21 is arranged on the back surface of the color film substrate 20, the shading layer 21 is a black matrix, and the hollow area 22 is positioned on the non-effective display area B2 of the color film substrate 20; the array substrate 10 has an inner trace 11 on the active display area B1 and a peripheral trace 12 on the inactive display area B2, and the inner trace 11 and the peripheral trace 12 are both located on the front surface of the array substrate 10.
The array substrate 10 and the color film substrate 20 are installed in a box-to-box mode, the box-to-box formed frame sealing glue 30 is connected with the array substrate 10 and the color film substrate 20, and orthographic projections of the frame sealing glue 30, the hollow-out area 22 and the peripheral wiring area on the array substrate 10 are at least partially overlapped;
the peripheral routing area and the hollow area 22 are opposite to each other, one end of the frame sealing glue 30 is connected to the peripheral routing area, the other end of the frame sealing glue 30 is connected to the hollow area 22, and orthographic projections of the frame sealing glue 30, the hollow area 22 and the peripheral routing area on the array substrate 10 are at least partially overlapped.
The frame sealing glue 30 is cured by ultraviolet light through the hollow area 22 on the side of the color film substrate 20 by using the mask 40, and the photosensitive material in the frame sealing glue 30 is converted into a light-shielding solute during curing, so that the cured frame sealing glue 30 is shielded from light.
Because the light-shielding layer 21 of the color film substrate 20 is hollowed out, light can pass through the hollowed-out region 22, and on the color film substrate side, under the action of the metal mask, ultraviolet light passes through the metal mask to irradiate the hollowed-out region and penetrate through the hollowed-out region, so that the frame sealing glue is cured. In order to better cure the frame sealing adhesive, after the ultraviolet light irradiation is completed, the display panel is subsequently heated for a set time at a set temperature. By adopting the frame sealing adhesive 30 and the color film substrate 20, the peripheral wires 12 of the array substrate 10 are not limited by the aperture ratio any more, and can be densely wired, thereby realizing the effect of a narrow frame.
According to the manufacturing method of the display panel, the frame sealing glue 30 can solve the problems that the black frame sealing glue 30 has poor light transmittance and cannot be effectively photocured; the frame sealing glue 30 is in a shading color after being cured, the manufactured display panel can improve light leakage at the edge of the display panel, can improve the edge contrast of the display panel and display image quality, and can relieve the limitation of the aperture ratio of the peripheral wiring 12 when the frame sealing glue 30 on the array substrate 10 is designed, thereby being beneficial to realizing narrow frame design.
The array substrate can be manufactured by the following manufacturing method:
and forming a pattern of a driving structure layer on the substrate. The driving structure layer comprises a Thin Film Transistor (TFT), a grid line, a data line, an edge wiring line and the like, and the structure and the preparation process of the driving structure layer are the same as those of the existing preparation process. For example, the preparation process may include: the method comprises the steps of cleaning a substrate, and then sequentially preparing a gate electrode, a gate line, a gate insulating layer, an active layer, a barrier layer, a source drain electrode, a data line, an edge wiring and the like on the substrate through a composition process. The internal routing includes a gate line, a data line, and the like. The thin film transistor may have a bottom gate structure or a top gate structure, and may be an amorphous silicon (a-Si) thin film transistor, or may be a Low Temperature Polysilicon (LTPS) thin film transistor or an Oxide (Oxide) thin film transistor, which is not limited specifically herein.
The color film substrate can also be manufactured in the following manner:
the color set pattern layer 52 and the light shielding layer 21 are sequentially formed on the substrate, the color resistance pattern layer 52 comprises color resistors with different colors and is located in an effective display area B1, the light shielding layer 21 is located in the effective display area B1 and a non-effective display area B2, the light shielding layer located in the effective display area B1 is located between the adjacent color resistors, and a hollow area 22 is formed in the position, corresponding to the frame sealing glue, of the light shielding layer located in the non-effective display area B2. Further, the flat layer 53, the support pattern layer 51, and the like are continuously formed on the patterned substrate.
The light-shielding layer 21 is manufactured by a one-time composition process, and forms a matrix pattern in the effective display area B1 and a hollow area 22 in the non-effective display area. The "patterning process" described in the embodiments includes processes of coating a photoresist, mask exposure, development, etching, and stripping a photoresist, and is a well-established manufacturing process.
When the frame sealing glue 30 comprises a base glue material, a capsule 32 and a light-transmitting solute 31, the light-transmitting solute 31 is wrapped in the capsule 32 to form a photosensitive capsule 33, the photosensitive capsule 33 is mixed in the base glue material, when the frame sealing glue 30 is cured through the hollow area 22 on the side of the color film substrate 20 by adopting a mask 40 through ultraviolet light, the capsule 32 disperses and releases the light-transmitting solute 31 under the irradiation of the ultraviolet light, the light-transmitting solute 31 is dissolved in the base glue material and is changed into a light-shielding solute under the irradiation of the ultraviolet light, the light-shielding solute is in a light-shielding color, the color of the frame sealing glue is changed from the light-transmitting color into the light-shielding color due to the mixing of the light-shielding solute in the base glue material, the problem that the light is leaked at the hollow area 22 due to the poor stray light blocking effect of the frame sealing glue 30 on an ineffective display area in a box can be solved, the limitation of the aperture ratio during the peripheral wiring at the side of the array substrate can be cancelled, the narrow-edge width can be realized more easily, and the problem that the traditional black frame sealing glue cannot be cured effectively due to light-tight can be solved.
EXAMPLE III
The display device (not shown in the figures) provided by the embodiment of the invention comprises the display panel described in the second embodiment.
The display device provided by the invention has all the advantages of the display panel described in the second embodiment, and details are not repeated herein.
Example four
The manufacturing method of the display panel provided by the embodiment of the invention comprises the following steps:
providing an array substrate and a color film substrate, wherein the color film substrate comprises a light shielding layer, a hollow-out area is arranged on the light shielding layer, and the array substrate is provided with a peripheral wiring area;
the array substrate and the color film substrate are installed in a box-to-box mode, the frame sealing glue formed in the box-to-box mode is connected with the array substrate and the color film substrate, the frame sealing glue is the frame sealing glue described in the first embodiment, and orthographic projections of the frame sealing glue, the hollow area and the peripheral wiring area on the array substrate are at least partially overlapped;
the frame sealing glue is solidified through ultraviolet rays through the hollow area on the side of the color film substrate, and a photosensitive material in the frame sealing glue is converted into a shading solute during solidification, so that the solidified frame sealing glue is shaded.
According to the manufacturing method of the display panel, the frame sealing glue can solve the problems that the transmittance is poor and the light curing cannot be effectively carried out when the black frame sealing glue is used; the frame sealing glue is in shading color after being cured, the manufactured display panel can improve light leakage at the edge of the display panel, can improve the edge contrast of the display panel and display image quality, and is beneficial to realizing narrow frame design by releasing the limitation of the opening rate of peripheral wiring lines of a peripheral wiring line area when the frame sealing glue on the array substrate is designed.
Specifically, before the step of providing the array substrate and the color filter substrate, the method further includes: and forming a light shielding layer with a hollowed-out area at the periphery on the substrate through a one-time composition process to manufacture the color film substrate, wherein the manufacturing steps of the color film substrate are not increased.
Specifically, the step of curing the frame sealing adhesive through the hollow area on the side of the color film substrate by the ultraviolet light includes: and irradiating ultraviolet rays on the side of the color film substrate on the hollow-out area through the mask plate to solidify the frame sealing glue. The mask is configured as a metal mask.
The frame sealing glue comprises a base glue material, a capsule coat and a light-transmitting solute, when the frame sealing glue is cured through a hollow area on the side of a color film substrate by adopting a mask plate through ultraviolet light, the capsule coat disperses and releases the light-transmitting solute under the irradiation of the ultraviolet light, the light-transmitting solute is dissolved in the base glue material and is converted into a light-shielding solute under the irradiation of the ultraviolet light, the light-shielding solute is in a light-shielding color, the color of the frame sealing glue is changed from the light-transmitting color to the light-shielding color due to the fact that the light-shielding solute is mixed in the base glue material, the light is shielded at the hollow area, the problem that the frame sealing glue has poor stray light blocking effect on an ineffective display area in a box and peripheral light leakage is caused can be solved, the limitation of the aperture ratio during peripheral wiring on the side of an array substrate can be eliminated, the narrow edge width is easier to realize, and the problem that the traditional black frame sealing glue cannot be cured effectively due to light tightness can be solved.
In summary, in the sealant provided in the embodiments of the present invention, the light-transmitting solute is mixed in the light-transmitting base sealant, the light-transmitting solute is converted into the light-shielding solute under the first setting condition, and when the sealant is applied to the display panel, after the array substrate and the color film substrate are aligned, the light-transmitting solute is converted into the light-shielding solute under the first setting condition, and the light-shielding solute presents the light-shielding color.
In the description herein, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
In the description of the specification, reference to the term "one embodiment," "some embodiments," "a specific embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example herein. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although the embodiments disclosed herein are described above, the descriptions are only for the convenience of understanding the embodiments and are not intended to limit the disclosure. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure herein may be limited only by the appended claims.
Claims (4)
1. A frame sealing adhesive is characterized by comprising:
a light-transmitting matrix glue material; and
a light-transmitting solute for being transformed into a light-shielding solute under a first set condition; and
the capsule coat is mixed in the matrix glue material, the light-transmitting solute is coated in the capsule coat, and the capsule coat is degraded under a second set condition to release the light-transmitting solute in the matrix glue material;
the light-transmitting solute is a photosensitive material, the first set condition is ultraviolet light irradiation, and the second set condition is ultraviolet light irradiation;
the capsule coat is made of a photo-thermal degradation material and a shading dye, and the shading dye is mixed with the photo-thermal degradation material;
in the frame sealing glue, the sum of the mass percentages of the capsule coat and the light-transmitting solute is 1-10%;
the photosensitive material is silver halide, and the light-shading solute is black.
2. A method for manufacturing a display panel is characterized by comprising the following steps:
providing an array substrate and a color film substrate, wherein the color film substrate comprises a light shielding layer, a hollow area is arranged on the light shielding layer, and the array substrate is provided with a peripheral wiring area;
installing the array substrate and the color film substrate in a box-to-box manner, wherein a box sealing adhesive formed in the box-to-box manner is connected with the array substrate and the color film substrate, the box sealing adhesive is the box sealing adhesive in claim 1, and orthographic projections of the box sealing adhesive, the hollow area and the peripheral wiring area on the array substrate are at least partially overlapped;
and curing the frame sealing glue through the hollow area on the side of the color film substrate by ultraviolet rays, wherein the photosensitive material in the frame sealing glue is converted into a shading solute during curing, so that the cured frame sealing glue is shaded.
3. The method for manufacturing a display panel according to claim 2, further comprising, before the step of providing the array substrate and the color filter substrate:
and forming a light shielding layer with a hollow area at the periphery on the substrate through a one-time composition process to manufacture the color film substrate.
4. The method for manufacturing a display panel according to claim 3, wherein the step of curing the frame sealing adhesive through the hollow area on the color film substrate side by ultraviolet light includes:
and irradiating ultraviolet light on the side of the color film substrate on the hollow area through a mask plate to solidify the frame sealing glue.
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| CN111338137B (en) * | 2020-04-14 | 2022-02-22 | Tcl华星光电技术有限公司 | Display panel and manufacturing method thereof |
| CN111754877A (en) * | 2020-06-28 | 2020-10-09 | 昆山国显光电有限公司 | Display module and display device |
| CN112882278B (en) * | 2021-03-01 | 2023-06-09 | 合肥鑫晟光电科技有限公司 | Display panel, display module, manufacturing method of display module and display device |
| CN115971008B (en) * | 2022-12-16 | 2023-12-29 | 富联裕展科技(深圳)有限公司 | Glue filling method and glue filling device |
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