CN115421327A - Cover plate, display module and manufacturing method thereof, and display device - Google Patents
Cover plate, display module and manufacturing method thereof, and display device Download PDFInfo
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- CN115421327A CN115421327A CN202211199549.9A CN202211199549A CN115421327A CN 115421327 A CN115421327 A CN 115421327A CN 202211199549 A CN202211199549 A CN 202211199549A CN 115421327 A CN115421327 A CN 115421327A
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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
- G02F1/133308—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
-
- 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
- G02F1/133331—Cover glasses
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
- G09F9/335—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes being organic light emitting diodes [OLED]
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application relates to a cover plate, a display module, a manufacturing method of the display module and a display device. The apron includes the base plate, sets up the light shield layer and the setting of base plate one side are in the light shield layer deviates from the hydrophobic layer of base plate one side. The middle part of light shield layer is provided with fretwork portion, the middle part of hydrophobic layer is provided with the opening, the opening is in the orthographic projection of base plate covers fretwork portion is in the orthographic projection of base plate. Through setting up the hydrophobic layer, be favorable to improving the bond property that the apron passes through glue and display panel coating laminating, improve the fastness of bonding to be favorable to improving display device's life-span.
Description
Technical Field
The invention relates to the technical field of display, in particular to a cover plate, a display module, a manufacturing method of the display module and a display device.
Background
In recent years, liquid crystal display devices and organic electroluminescence display devices have been widely used as mainstream products in flat panel display technologies, and are used in many areas from small consumer products such as mobile phones and digital cameras to large displays such as desktop computer displays, televisions and head-up displays.
Before shipment, the cover plate in the display device is generally attached to the display panel by a glue layer. The bonding method between the display panel and the cover plate generally includes Optical Clear Adhesive (OCA) bonding, optical Clear Resin (OCR) coating bonding, and the like. Because the OCR coating and attaching mode has the advantages of low cost, good gap filling property, high attaching yield and the like, the application is more and more extensive.
In general, OCR glue is applied to the cover plate, and then the cover plate is bonded to the display panel. And forming a glue layer after the glue is cured. Because the mobility of glue is great to and the controllability of solidification is relatively poor, make the glue film be close to the area that the binding face of display panel's binding face is far less than the glue film and is close to the area of the binding face of apron, also promptly, the edge of two binding faces can form great hypotenuse, thereby causes the laminating area to reduce, influences laminating intensity, is unfavorable for improving display device's life-span.
Disclosure of Invention
Therefore, it is necessary to provide a cover plate, a display module, a manufacturing method thereof, and a display device to improve a large bevel edge formed after glue is cured, increase a bonding area, and further increase a lifetime of the display device.
According to a first aspect of the present application, a cover plate is provided. The apron includes the base plate, sets up the light shield layer and the setting of base plate one side are in the light shield layer deviates from the hydrophobic layer of base plate one side. The middle part of light shield layer is provided with fretwork portion, the middle part of hydrophobic layer is provided with the opening, the opening is in the orthographic projection of base plate covers fretwork portion is in the orthographic projection of base plate.
In this application, through setting up the hydrophobic layer, be favorable to improving the bonding property that the apron passes through glue and display panel coating laminating, improve the fastness of bonding. Specifically, glue is coated on one side of the cover plate, where the hydrophobic layer is arranged, and is located in the opening. After the glue is solidified, the bevel edges are formed at the two side edges of the glue. Because the surface tension of the hydrophobic layer is small, the glue can be prevented from flowing to the outer side of the hydrophobic layer, the attractive force among glue molecules is larger than the tension of the surface of the hydrophobic layer, the glue at the edge can shrink towards the center, the problem that the bevel edge is too large after the glue is cured is solved, and even the width of the bevel edge can be controlled within 1 mm. Compare in correlation technique, the apron of this application is through setting up the hydrophobic layer for the apron carries out the effective bonding area grow of OCR coating laminating with display panel, thereby is favorable to improving laminating intensity, improves display device's life-span.
In some embodiments, the hydrophobic layer is ring-shaped with a width that is equal everywhere.
In some embodiments, the light-shielding layer includes a first sub-light-shielding layer and a second sub-light-shielding layer disposed between the first sub-light-shielding layer and the hydrophobic layer, and the hollow portion includes a first sub-hollow portion located in the middle of the first sub-light-shielding layer and a second sub-hollow portion located in the second sub-light-shielding layer.
In some embodiments, the orthographic projection of the second sub-hollow on the substrate covers the orthographic projection of the first sub-hollow on the substrate.
In some embodiments, the thickness of the first sub-shading layer is greater than or equal to 5 μm and less than or equal to 9 μm.
In some embodiments, a sum of thicknesses of the first sub-light shielding layer and the second sub-light shielding layer is greater than or equal to 8 μm and less than or equal to 15 μm.
According to a second aspect of the present application, a display module is provided. The display module comprises a display panel, glue and the cover plate according to the first aspect. The display panel is bonded with one side, close to the hydrophobic layer, of the cover plate through glue.
In some embodiments, an orthographic projection of the display panel on the substrate is within an orthographic projection of the hydrophobic layer on the substrate and covers an orthographic projection of the opening on the substrate.
In some embodiments, the display panel is a touch display panel.
According to a third aspect of the present application, a method for manufacturing a display module is provided, which includes:
providing a substrate;
a light shielding layer is arranged on one side of the substrate, and a hollow part is arranged in the middle of the light shielding layer;
arranging a hydrophobic layer on one side, away from the substrate, of the light shielding layer, wherein an opening is formed in the middle of the hydrophobic layer, and the orthographic projection of the opening on the substrate covers the orthographic projection of the hollow part on the substrate;
providing a display panel;
and bonding the display panel with one side of the substrate close to the hydrophobic layer through glue.
According to a fourth aspect of the present application, a display device is provided, which includes the display module set described in the second aspect.
Drawings
FIG. 1 is a schematic view illustrating an assembly of a cover plate and a display panel according to the related art;
FIG. 2 is a schematic plan view of a cover plate according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a film structure of the cover plate shown in FIG. 2;
FIG. 4 is a schematic view of the cover plate and the display panel shown in FIG. 2;
FIG. 5 is a schematic view of another film layer structure of a cover plate according to an embodiment of the present disclosure;
FIG. 6 is a schematic view of the cover plate and the display panel shown in FIG. 5;
fig. 7 is a flowchart of a method for manufacturing a display module according to an embodiment of the present application.
Reference numerals are as follows:
1-a display module; 2-cover plate; 21-a transparent substrate; 3-a display panel; 4-glue; 5-a first side; 6-second side; 7-bevel edge; 100-a cover plate; 110-a substrate; 111-a light-blocking area; 112-a light-transmitting region; 120-a light-shielding layer; 1201-a second side edge; 121-a hollowed-out portion; 1211 — a first sub-hollowed-out portion; 1212-a second sub hollowed-out portion; 130-a hydrophobic layer; 131-an opening; 1301-a first side edge; 140-a first sub-shading layer; 141-step; 150-a second sub-shading layer; 200-glue; 210-a first side; 220-a second face; 230-bevel edge; 300-display panel. H-width.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
In recent years, liquid crystal display devices and organic electroluminescence display devices have been widely used as mainstream products in flat panel display technologies, and are used in many areas from small consumer products such as mobile phones and digital cameras to large displays such as desktop computer displays, televisions and head-up displays.
Before shipment, the cover plate in the display device is generally attached to the display panel by a glue layer. The bonding method between the display panel and the cover plate includes Optical Clear Adhesive (OCA) bonding, optical Clear Resin (OCR) coating bonding, and the like. The OCR coating and bonding method has the advantages of low cost, good gap filling property, high bonding yield and the like, and is gradually preferred.
In general, OCR glue is coated on the cover plate, and then the cover plate is adhered to the display panel. And forming a glue layer after the glue is cured. As shown in fig. 1, fig. 1 is a schematic diagram illustrating a cover plate of a display module and a display panel in a related art. The display module 1 includes a cover plate 2 and a display panel 3. The cover plate 2 includes a transparent substrate 21 and a glue 4 coated on one side of the transparent substrate 21. The cover plate 2 is pressed and bonded with the display panel 3 through glue 4, and the glue 4 is solidified through heating, illumination and other means after bonding.
However, due to the large flowability and poor curing controllability of the glue, after curing, the area of the glue 4 close to the bonding surface of the display panel 3 is much smaller than the area of the glue 4 close to the bonding surface of the cover plate 2. That is, as shown in fig. 1, the glue 4 includes a first side 5 contacting the cover plate 2 and a second side 6 contacting the display panel 3. After the glue 4 has cured, a large bevel 7 is formed at the edge of the glue 4, so that the area of the second side 6 is much smaller than the area of the first side 5. The wider the width H of the bevel edge 7, the smaller the area of the second face 6, thereby reducing the effective attachment area of the cover plate 2 and the display panel 3, affecting the attachment strength, and being not beneficial to improving the service life of the display device. In some embodiments, the width H of the bevel 7 formed after curing may even be more than 4mm, and even after the fitting or environmental performance test, defects such as bubbles may occur.
Based on the problems, the application provides a cover plate, a display module, a manufacturing method of the display module and a display device, so that the attachment area of the cover plate and the display panel is favorably increased, and the service life of the display device is further prolonged.
According to a first aspect of the present application, a cover plate 100 is proposed. Fig. 2 to 4 are schematic plan views of a cover plate 100 according to an embodiment of the present disclosure, fig. 3 is a schematic film structure of the cover plate 100 shown in fig. 2, and fig. 4 is an assembly diagram of the cover plate 100 and a display panel 300 shown in fig. 2. The cover plate 100 includes a substrate 110, a light-shielding layer 120 disposed on a side of the substrate 110, and a water-repellent layer 130 disposed on a side of the light-shielding layer 120 facing away from the substrate 110. The light-shielding layer 120 is provided with a hollow portion 121 in the middle, and the water-repellent layer 130 is provided with an opening 131 in the middle. The orthographic projection of the opening 131 on the substrate 110 covers the orthographic projection of the hollow portion 121 on the substrate 110.
The cover plate 100 is a protective plate for protecting the display panel. Therefore, the cap plate 100 is required to have scratch resistance and to satisfy test requirements for impact resistance, surface hardness, and the like.
The cover plate 100 includes a substrate 110, a light-shielding layer 120, and a water-repellent layer 130. The substrate 110 is a base material of the cover plate 100. The substrate 110 is usually made of a high light-transmitting material to avoid affecting the display effect of the display panel. The substrate 110 may be made of a rigid material or a flexible material. For example, in some embodiments, the substrate 110 may be made of a transparent, soft and foldable material such as ultra-thin flexible glass, transparent polyimide film, polyethylene terephthalate, etc. to realize the bendable folding of the cover plate 100, so that the cover plate 100 can be applied to a flexible and foldable display panel. In other embodiments, the substrate 110 may be made of rigid glass, so that the cover plate 100 can be applied to a rigid display panel.
The light-shielding layer 120 is disposed on one side of the substrate 110, and a hollow portion 121 is disposed in the middle of the light-shielding layer 120, so that the light-shielding layer 120 does not affect the light-transmitting effect of the substrate 110. As shown in fig. 3, the light-shielding layer 120 is used for shielding a portion of light emitted from the display panel 300, and reduces or avoids light leakage generated when the cover plate 100 is applied to the display panel 300, so that the display panel 300 has a better display effect. The light shielding layer 120 may be coated on the substrate 110 by spraying or printing. The light shielding region 111 is formed in the portion of the substrate 110 covered by the light shielding layer 120, the light shielding effect of the light shielding region 111 prevents diffraction, light leakage or visible wires, and the light transmitting region 112 is formed in the portion of the substrate 110 not covered by the light shielding layer 120, so as to ensure the normal passing of light. In some embodiments, when the cover plate 100 is attached to the display panel, the light shielding region 111 corresponds to a non-display region of the display panel, and the light transmitting region 112 corresponds to a display region of the display panel.
The hydrophobic layer 130 refers to a film layer formed by a hydrophobic material. For example, it may be a fluorine-containing photo-curable hydrophobic material. Alternatively, in some embodiments, the hydrophobic layer 130 may be a hydrophobic thin film formed by chemical vapor deposition or coating, such as a super-hydrophobic zinc oxide thin film. The water-repellent layer 130 has openings 131, that is, the water-repellent layer 130 has a square structure as shown in fig. 2 and 3. The orthographic projection of the opening 131 on the substrate 110 covers the orthographic projection of the hollow portion 121 on the substrate 110. That is to say, the area of the opening 131 is larger than the area of the hollow portion 121, the first side edge 1301 of the hydrophobic layer 130 close to the opening 131 is located on the outer side of the light-shielding layer 120 close to the second side edge 1201 of the hollow portion 121, and the glue 200 is coated in the opening 131. Thus, the hydrophobic layer 130 does not block the light-transmitting area 112 of the cover plate, so that the influence of the hydrophobic layer 130 on the display effect is avoided, and meanwhile, the cover plate 100 and the display panel 300 can be ensured to have a larger bonding surface, thereby being beneficial to improving the bonding firmness. In some embodiments, glue 200 may comprise liquid optical glue, optically Clear Resin (OCR), or the like.
In this application, through setting up hydrophobic layer 130, be favorable to improving the bonding property that apron 100 and display panel 300 pass through glue 200 coating laminating, improve the fastness of bonding. Specifically, as shown in fig. 4, the glue 200 is applied to one side of the cover plate 100 where the hydrophobic layer 130 is disposed, and is located in the opening 131. The glue 200 includes a first surface 210 contacting the light-shielding layer 120 of the cover plate 100 and a second surface 220 contacting the display panel 300. After glue 200 cures, a beveled edge 230 is formed at the edge of glue 200. Because the surface tension of the hydrophobic layer 130 is small, the glue 200 can be prevented from flowing to the outer side of the hydrophobic layer 130, the attractive force among the molecules of the glue 200 is larger than the surface tension of the hydrophobic layer 130, the glue at the edge can shrink towards the center, the problem that the inclined edge 230 is too large after the glue 200 is cured is solved, and the width H of the inclined edge 230 can be even controlled within 1 mm. Compare in correlation technique, the apron 100 of this application is through setting up hydrophobic layer 130 for apron 100 carries out the effective bonding area grow of OCR coating laminating with display panel 300, thereby is favorable to improving laminating intensity, does benefit to the life-span that improves display device.
As shown in fig. 2, in some embodiments, the hydrophobic layer 130 is a ring shape having a width that is equal everywhere. The hydrophobic layer 130 is formed in a ring shape having a uniform width, which is advantageous for improving convenience in processing the hydrophobic layer 130. On the other hand, the shrinkage amplitude of the glue 200 is ensured to be the same towards the center at each position after the glue 200 is blocked by the hydrophobic layer 130, so that the bonding strength of the glue 200 bonded with the display panel 300 at each position tends to be consistent, the probability of occurrence of a bonding weak position is reduced, and the bonding strength is improved. In some embodiments, the hydrophobic layer 130 may be a rectangular ring or a circular ring, etc., and its specific shape is adapted to the shapes of the display panel and the cover plate, which can be flexibly selected by those skilled in the art.
As shown in fig. 5 and 6, in some embodiments, the light-shielding layer 120 includes a first sub-light-shielding layer 140 and a second sub-light-shielding layer 150 disposed between the first sub-light-shielding layer 140 and the water-repellent layer 130, and the hollow portion 121 includes a first sub-hollow portion 1211 located in the middle of the first sub-light-shielding layer 140 and a second sub-hollow portion 1212 located in the middle of the second sub-light-shielding layer 150.
In this embodiment, the light-shielding layer 120 has a double-layer structure. Specifically, the light-shielding layer 120 includes a first sub-light-shielding layer 140 and a second sub-light-shielding layer 150, a first sub-hollow 1211 is disposed in the middle of the first sub-light-shielding layer 140, and a second sub-hollow 1212 is disposed in the middle of the second sub-light-shielding layer 150. The two light shielding layers are used for shielding light, so that light leakage defects such as pinholes and the like generated by the single light shielding layer can be avoided, and the light shielding effect is improved. The two sub hollow portions are used for transmitting light, so that the picture of the display panel is not shielded by the light shielding layer 120, and the display effect is prevented from being influenced. In some embodiments, the first and second sub-light shielding layers 140 and 150 may be formed by printing black ink, so that a good light shielding effect may be formed.
As shown in fig. 6, in some embodiments, the orthographic projection of the second sub-hollow 1212 on the substrate 110 covers the orthographic projection of the first sub-hollow 1211 on the substrate 110. That is, the first sub-light-shielding layer 140 and the second sub-light-shielding layer 150 are formed with the step 141 at a side close to the hollow portion 120. With this configuration, in the first aspect, it is beneficial to reduce the probability of ink accumulation on the side close to the hollow portion 120 of the first sub-light-shielding layer 140 and the second sub-light-shielding layer 150 in the process of printing and coating the first sub-light-shielding layer 140 and the second sub-light-shielding layer 150, and it is beneficial to improve the flatness of the first sub-light-shielding layer 140 and the second sub-light-shielding layer 150. In the second aspect, bubbles generated during bonding can be discharged through the step 141, so that the probability of bubbles generation can be reduced, and the bonding yield can be improved.
In some embodiments, the thickness of the first sub-light-shielding layer 140 is greater than or equal to 5 μm and less than or equal to 9 μm. When the thickness of the first sub-light shielding layer 140 is within the above range, it is beneficial to reduce the thickness of the attached display device and to ensure the light shielding effect.
In some embodiments, the sum of the thicknesses of the first sub-light shielding layer 140 and the second sub-light shielding layer 150 is greater than or equal to 8 μm and less than or equal to 15 μm. That is, the thickness of the light-shielding layer 120 is 8 μm or more and 15 μm or less. At this time, the first aspect is favorable for ensuring the thickness of the display device after the attachment. In the second aspect, the shading effect can be ensured. In the third aspect, the glue can be ensured to have a certain thickness during coating, so that the glue is fully filled between the cover plate 100 and the display panel 300, the probability of generating bubbles is reduced, and the product yield is improved.
In some embodiments, the thickness of the first sub-shielding layer 140 is greater than or equal to 5 μm and less than or equal to 9 μm, and the sum of the thicknesses of the first sub-shielding layer 140 and the second sub-shielding layer 150 is greater than or equal to 8 μm and less than or equal to 15 μm. The present embodiment specifically limits the thickness of the two light-shielding layers. Set up like this, the first aspect is favorable to guaranteeing laminating back display device's thickness, and the shading effect is favorable to guaranteeing in the second aspect, and the third aspect can guarantee that glue possesses certain thickness when the coating, makes it fully fill between apron 100 and display panel 300, reduces the probability that the bubble produced, improves the product yield.
As shown in fig. 6, according to a second aspect of the present application, a display module 10 is provided. The display module 10 includes a display panel 300, glue 200, and the cover plate 100 of the first aspect. The display panel 300 is adhered to one side of the cover plate 100 adjacent to the hydrophobic layer 130 by the glue 200.
It should be noted that the display panel 300 in this embodiment may be an active Light Emitting display panel, such as an Organic Light Emitting Diode (OLED) display panel, a Micro Light Emitting Diode (Micro Light Emitting Diode) display panel, an active matrix Organic Light Emitting Diode display panel, a passive matrix Organic Light Emitting Diode display panel, a quantum dot Organic Light Emitting Diode display panel, and the like. The display panel 300 of the embodiment of the present application may also be a liquid crystal display panel, and the present application does not limit the type of the liquid crystal display panel, and may be a vertical electric field type liquid crystal display panel, such as a twisted nematic liquid crystal display panel, or a horizontal electric field type liquid crystal display panel, such as a fringe field switching liquid crystal display panel or an in-plane switching liquid crystal display panel.
In this application, through setting up hydrophobic layer 130, be favorable to improving the bonding performance that the apron 100 of display module assembly 10 and display panel 300 pass through glue 200 coating laminating, improve the fastness of bonding. Specifically, as shown in fig. 6, the glue 200 is applied to the cover plate 100 at a side where the hydrophobic layer 130 is disposed, and is located in the opening 131. The glue 200 includes a first side 210 contacting the cover plate 100 and a second side 220 contacting the display panel 300. After the glue 200 is cured, a beveled edge 230 is formed at the edge of the glue 200. Because the surface tension of the hydrophobic layer 130 is small, the glue 200 can be prevented from flowing to the outer side of the hydrophobic layer 130, the attractive force among the molecules of the glue 200 is larger than the surface tension of the hydrophobic layer 130, the glue at the edge can shrink towards the center, the problem that the inclined edge 230 is too large after the glue 200 is cured is solved, and the width of the inclined edge 230 can be even controlled within 1 mm. Compare in correlation technique, the apron 100 of this application is through setting up hydrophobic layer 130 for apron 100 carries out the effective bonding area grow of OCR coating laminating with display panel 300, thereby is favorable to improving laminating intensity, does benefit to the life-span that improves display device.
In some embodiments, the orthographic projection of the display panel 300 on the substrate 110 is located within the orthographic projection of the hydrophobic layer 130 on the substrate 110, and the orthographic projection of the cover opening 131 on the substrate 110. That is, when the bonding is performed, the outer edge of the water-repellent layer 130 is located outside the outer edge of the display panel 300 due to the presence of the opening 131, and the inner edge of the water-repellent layer 130 close to the opening 131, that is, the first side 1301 is located inside the outer edge of the display panel 300. Therefore, on one hand, the attaching area of the display panel 300 and the cover plate 100 can be increased, and on the other hand, the hydrophobic layer 130 and the display panel 300 can be ensured to have a certain overlapping width, so that the outer edge of the display panel 300 is sealed, and the generation of bubbles is reduced.
In some embodiments, the display panel 300 is a touch display panel. The touch display panel is a display panel with a touch module. That is, the display panel 300 includes a display function layer and a touch module. The display function layer may include an organic light emitting diode display function layer, a micro light emitting diode display function layer, a liquid crystal display function layer, or the like. The touch module may be an In-cell touch (In-cell) or an On-cell touch (On-cell) touch unit, and the touch mode of the touch unit may be a capacitive type or a resistive type. The touch unit and the display function layer can be bonded in a jogged or pasted mode to form a touch display panel with a complete touch display function.
In a specific embodiment, the hydrophobic layer 130 is a ring shape having a width equal to each other, the width is designed to be 1mm, and the distance from the outer edge thereof to the outer edge of the display panel 300 is designed to be 0.5mm. After OCR coating laminating, the width of hypotenuse 230 that forms is less than 1mm, can not appear bubble etc. after performance test and show badly, and laminating intensity promotes comparatively obviously.
As shown in fig. 7, according to a third aspect of the present application, a method for manufacturing a display module is provided, including:
providing a substrate 110;
a light-shielding layer 120 is arranged on one side of the substrate 110, and a hollow part 121 is arranged in the middle of the light-shielding layer 120;
arranging a water-repellent layer 130 on one side of the light-shielding layer 120, which is far away from the substrate 110, wherein an opening 131 is arranged in the middle of the water-repellent layer 130, and the orthographic projection of the opening 131 on the substrate 110 covers the orthographic projection of the hollow part 121 on the substrate 110;
providing a display panel 300;
the display panel 300 is bonded to the substrate 110 at a side close to the hydrophobic layer 130 by glue 200.
According to the display module assembly manufactured by the manufacturing method of the display module assembly, the hydrophobic layer 130 is arranged, the bonding performance of the cover plate 100 and the display panel 300 which are attached through glue 200 coating is favorably improved, and the bonding firmness is improved. Specifically, as shown in fig. 4, the glue 200 is applied to the cover plate 100 at a side where the hydrophobic layer 130 is disposed, and is located in the opening 131. The glue 200 includes a first side 210 contacting the cover plate 100 and a second side 220 contacting the display panel 300. After the glue 200 is cured, a beveled edge 230 is formed at the edge of the glue 200. Because the surface tension of the hydrophobic layer 130 is small, the glue 200 can be prevented from flowing to the outer side of the hydrophobic layer 130, the attractive force among the molecules of the glue 200 is larger than the surface tension of the hydrophobic layer 130, the glue at the edge can shrink towards the center, the problem that the inclined edge 230 is too large after the glue 200 is cured is solved, and the width of the inclined edge 230 can be even controlled within 1 mm. Compare in correlation technique, through setting up hydrophobic layer 130 in this application for apron 100 carries out the effective bonding area grow that OCR coating laminated with display panel 300, thereby is favorable to improving laminating intensity, does benefit to the life-span that improves display device.
According to a fourth aspect of the present application, a display device is provided, which includes the display module of the second aspect. The display device may be any product or component with a display function, such as an on-vehicle display screen, a television, a digital camera, a mobile phone, a tablet computer, and the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides an apron, its characterized in that, the apron includes the base plate, sets up the light shield layer and the setting of base plate one side are in the light shield layer deviates from the hydrophobic layer of base plate one side, the middle part of light shield layer is provided with hollow portion, the middle part of hydrophobic layer is provided with the opening, the opening is in the orthographic projection of base plate covers hollow portion is in the orthographic projection of base plate.
2. The cover plate of claim 1, wherein the hydrophobic layer is ring-shaped having a width that is equal from place to place.
3. The cover plate of claim 1, wherein the light-shielding layer comprises a first sub-light-shielding layer and a second sub-light-shielding layer disposed between the first sub-light-shielding layer and the hydrophobic layer, and the hollow portions comprise a first sub-hollow portion located in a middle of the first sub-light-shielding layer and a second sub-hollow portion located in the second sub-light-shielding layer.
4. The cover sheet according to claim 3, wherein an orthographic projection of the second sub-hollow portion on the substrate covers an orthographic projection of the first sub-hollow portion on the substrate.
5. The cover sheet according to claim 3, wherein the thickness of the first light sub-light shielding layer is 5 μm or more and 9 μm or less;
and/or the sum of the thicknesses of the first sub-shading layer and the second sub-shading layer is more than or equal to 8 μm and less than or equal to 15 μm.
6. A display module comprising a display panel, a glue and the cover plate according to any one of claims 1 to 5, wherein the display panel is bonded to the side of the cover plate adjacent to the hydrophobic layer by the glue.
7. The display module of claim 6, wherein an orthographic projection of the display panel on the substrate is within an orthographic projection of the hydrophobic layer on the substrate and covers an orthographic projection of the opening on the substrate.
8. The display module according to claim 6, wherein the display panel is a touch display panel.
9. A manufacturing method of a display module is characterized by comprising the following steps:
providing a substrate;
a light shielding layer is arranged on one side of the substrate, and a hollow part is arranged in the middle of the light shielding layer;
arranging a hydrophobic layer on one side, away from the substrate, of the light shielding layer, wherein an opening is formed in the middle of the hydrophobic layer, and the orthographic projection of the opening on the substrate covers the orthographic projection of the hollow part on the substrate;
providing a display panel;
and bonding the display panel with one side of the substrate close to the hydrophobic layer through glue.
10. A display device, characterized by comprising the display module of any one of claims 6-8.
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| CN202211199549.9A CN115421327A (en) | 2022-09-29 | 2022-09-29 | Cover plate, display module and manufacturing method thereof, and display device |
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| CN202211199549.9A CN115421327A (en) | 2022-09-29 | 2022-09-29 | Cover plate, display module and manufacturing method thereof, and display device |
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Effective date of registration: 20240112 Address after: 518109, Building E4, 101, Foxconn Industrial Park, No. 2 East Ring 2nd Road, Fukang Community, Longhua Street, Longhua District, Shenzhen City, Guangdong Province (formerly Building 1, 1st Floor, G2 District), H3, H1, and H7 factories in K2 District, North Shenchao Optoelectronic Technology Park, Minqing Road, Guangdong Province Applicant after: INTERFACE OPTOELECTRONICS (SHENZHEN) Co.,Ltd. Applicant after: Interface Technology (Chengdu) Co., Ltd. Applicant after: GENERAL INTERFACE SOLUTION Ltd. Address before: No.689 Hezuo Road, West District, high tech Zone, Chengdu City, Sichuan Province Applicant before: Interface Technology (Chengdu) Co., Ltd. Applicant before: INTERFACE OPTOELECTRONICS (SHENZHEN) Co.,Ltd. Applicant before: Yicheng Photoelectric (Wuxi) Co.,Ltd. Applicant before: GENERAL INTERFACE SOLUTION Ltd. |